prepare actix-tls release 3.0.0-rc.1 (#423)

Co-authored-by: Rob Ede <robjtede@icloud.com>

.cargo/config.toml

@@ -1,3 +1,26 @@
 [alias]
-chk = "hack check --workspace --all-features --tests --examples"
-lint = "hack --clean-per-run clippy --workspace --tests --examples"
+lint = "clippy --workspace --tests --examples --bins -- -Dclippy::todo"
+lint-all = "clippy --workspace --all-features --tests --examples --bins -- -Dclippy::todo"
+
+ci-doctest = "test --workspace --all-features --doc --no-fail-fast -- --nocapture"
+
+# just check the library (without dev deps)
+ci-check-min = "hack --workspace check --no-default-features"
+ci-check-lib = "hack --workspace --feature-powerset --exclude-features=io-uring check"
+ci-check-lib-linux = "hack --workspace --feature-powerset check"
+
+# check everything
+ci-check = "hack --workspace --feature-powerset --exclude-features=io-uring check --tests --examples"
+ci-check-linux = "hack --workspace --feature-powerset check --tests --examples"
+
+# tests avoiding io-uring feature
+ci-test = "       hack --feature-powerset --exclude=actix-rt --exclude=actix-server --exclude-features=io-uring test --workspace --lib --tests --no-fail-fast -- --nocapture"
+ci-test-rt = "    hack --feature-powerset --exclude-features=io-uring test --package=actix-rt     --lib --tests --no-fail-fast -- --nocapture"
+ci-test-server = "hack --feature-powerset --exclude-features=io-uring test --package=actix-server --lib --tests --no-fail-fast -- --nocapture"
+
+# test with io-uring feature
+ci-test-rt-linux = "    hack --feature-powerset test --package=actix-rt     --lib --tests --no-fail-fast -- --nocapture"
+ci-test-server-linux = "hack --feature-powerset test --package=actix-server --lib --tests --no-fail-fast -- --nocapture"
+
+# test lower msrv
+ci-test-lower-msrv = "hack --workspace --exclude=actix-server --exclude=actix-tls --feature-powerset test --lib --tests --no-fail-fast -- --nocapture"

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
           - { name: Windows (MinGW), os: windows-latest, triple: x86_64-pc-windows-gnu }
           - { name: Windows (32-bit), os: windows-latest, triple: i686-pc-windows-msvc }
         version:
-          - 1.46.0 # MSRV
+          - 1.52.0 # MSRV for -server and -tls
           - stable
           - nightly
 
@@ -64,8 +64,7 @@ jobs:
 
       # - name: Generate Cargo.lock
       #   uses: actions-rs/cargo@v1
-      #   with:
-      #     command: generate-lockfile
+      #   with: { command: generate-lockfile }
       # - name: Cache Dependencies
       #   uses: Swatinem/rust-cache@v1.2.0
 
@@ -75,57 +74,128 @@ jobs:
           command: install
           args: cargo-hack
 
-      - name: check minimal
+      - name: check lib
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
         uses: actions-rs/cargo@v1
-        with:
-          command: hack
-          args: check --workspace --no-default-features
-
-      - name: check minimal + tests
+        with: { command: ci-check-lib }
+      - name: check lib
+        if: matrix.target.os == 'ubuntu-latest'
         uses: actions-rs/cargo@v1
-        with:
-          command: hack
-          args: check --workspace --no-default-features --tests --examples
-
-      - name: check default
+        with: { command: ci-check-lib-linux }
+      - name: check lib
+        if: matrix.target.triple == 'x86_64-pc-windows-gnu'
         uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --workspace --tests --examples
-
+        with: { command: ci-check-min }
+      
       - name: check full
         # TODO: compile OpenSSL and run tests on MinGW
-        if: matrix.target.triple != 'x86_64-pc-windows-gnu'
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
         uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --workspace --all-features --tests --examples
+        with: { command: ci-check }
+      - name: check all
+        if: matrix.target.os == 'ubuntu-latest'
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-linux }
 
       - name: tests
-        if: matrix.target.triple != 'x86_64-pc-windows-gnu'
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: |
+          cargo ci-test
+          cargo ci-test-rt
+          cargo ci-test-server
+      - name: tests
+        if: matrix.target.os == 'ubuntu-latest'
+        run: |
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-rt-linux && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-server-linux"
+
+      - name: Clear the cargo caches
+        run: |
+          cargo install cargo-cache --version 0.6.2 --no-default-features --features ci-autoclean
+          cargo-cache
+  
+  build_and_test_lower_msrv:
+    name: Linux / 1.46 (lower MSRV)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install 1.46.0 # MSRV for all but -server and -tls
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.46.0-x86_64-unknown-linux-gnu
+          profile: minimal
+          override: true
+
+      - name: Install cargo-hack
         uses: actions-rs/cargo@v1
         with:
-          command: test
-          args: --workspace --all-features --no-fail-fast -- --nocapture
+          command: install
+          args: cargo-hack
 
+      - name: tests
+        run: |
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=1.46 cargo ci-test-lower-msrv"
+
+      - name: Clear the cargo caches
+        run: |
+          cargo install cargo-cache --version 0.6.2 --no-default-features --features ci-autoclean
+          cargo-cache
+  
+  coverage:
+    name: coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Rust (nightly)
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable-x86_64-unknown-linux-gnu
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.3.0
+    
       - name: Generate coverage file
-        if: >
-          matrix.target.os == 'ubuntu-latest'
-          && matrix.version == 'stable'
-          && github.ref == 'refs/heads/master'
+        if: github.ref == 'refs/heads/master'
         run: |
           cargo install cargo-tarpaulin
           cargo tarpaulin --out Xml --verbose
       - name: Upload to Codecov
-        if: >
-          matrix.target.os == 'ubuntu-latest'
-          && matrix.version == 'stable'
-          && github.ref == 'refs/heads/master'
+        if: github.ref == 'refs/heads/master'
         uses: codecov/codecov-action@v1
-        with:
-          file: cobertura.xml
+        with: { file: cobertura.xml }
 
-      - name: Clear the cargo caches
+  rustdoc:
+    name: rustdoc
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Rust (nightly)
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-x86_64-unknown-linux-gnu
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.3.0
+
+      - name: doc tests io-uring
         run: |
-          cargo install cargo-cache --no-default-features --features ci-autoclean
-          cargo-cache
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=nightly cargo ci-doctest"

.github/workflows/clippy-fmt.yml

@@ -39,4 +39,4 @@ jobs:
         uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          args: --workspace --tests --all-features
+          args: --workspace --all-features --tests --examples --bins -- -Dclippy::todo

Cargo.toml

@@ -2,7 +2,6 @@
 members = [
   "actix-codec",
   "actix-macros",
-  "actix-router",
   "actix-rt",
   "actix-server",
   "actix-service",
@@ -17,7 +16,6 @@ members = [
 [patch.crates-io]
 actix-codec = { path = "actix-codec" }
 actix-macros = { path = "actix-macros" }
-actix-router = { path = "actix-router" }
 actix-rt = { path = "actix-rt" }
 actix-server = { path = "actix-server" }
 actix-service = { path = "actix-service" }
@@ -27,3 +25,8 @@ actix-utils = { path = "actix-utils" }
 bytestring = { path = "bytestring" }
 local-channel = { path = "local-channel" }
 local-waker = { path = "local-waker" }
+
+[profile.release]
+lto = true
+opt-level = 3
+codegen-units = 1

LICENSE-APACHE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2017-NOW Nikolay Kim
+   Copyright 2017-NOW Actix Team
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

LICENSE-MIT

@@ -1,4 +1,4 @@
-Copyright (c) 2017 Nikolay Kim
+Copyright (c) 2017-NOW Actix Team
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated

actix-codec/CHANGES.md

@@ -3,6 +3,18 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 0.4.1 - 2021-11-05
+* Added `LinesCodec.` [#338]
+* `Framed::poll_ready` flushes when the buffer is full. [#409]
+
+[#338]: https://github.com/actix/actix-net/pull/338
+[#409]: https://github.com/actix/actix-net/pull/409
+
+
+## 0.4.0 - 2021-04-20
+* No significant changes since v0.4.0-beta.1.
+
+
 ## 0.4.0-beta.1 - 2020-12-28
 * Replace `pin-project` with `pin-project-lite`. [#237]
 * Upgrade `tokio` dependency to `1`. [#237]
@@ -23,28 +35,28 @@
 ## 0.3.0-beta.1 - 2020-08-19
 * Use `.advance()` instead of `.split_to()`.
 * Upgrade `tokio-util` to `0.3`.
-* Improve `BytesCodec` `.encode()` performance
-* Simplify `BytesCodec` `.decode()` 
+* Improve `BytesCodec::encode()` performance.
+* Simplify `BytesCodec::decode()`.
 * Rename methods on `Framed` to better describe their use.
 * Add method on `Framed` to get a pinned reference to the underlying I/O.
 * Add method on `Framed` check emptiness of read buffer.
 
 
 ## 0.2.0 - 2019-12-10
-* Use specific futures dependencies
+* Use specific futures dependencies.
 
 
 ## 0.2.0-alpha.4
-* Fix buffer remaining capacity calculation
+* Fix buffer remaining capacity calculation.
 
 
 ## 0.2.0-alpha.3
-* Use tokio 0.2
-* Fix low/high watermark for write/read buffers
+* Use tokio 0.2.
+* Fix low/high watermark for write/read buffers.
 
 
 ## 0.2.0-alpha.2
-* Migrated to `std::future`
+* Migrated to `std::future`.
 
 
 ## 0.1.2 - 2019-03-27
@@ -56,4 +68,4 @@
 
 
 ## 0.1.0 - 2018-12-09
-* Move codec to separate crate
+* Move codec to separate crate.

actix-codec/Cargo.toml

@@ -1,12 +1,13 @@
 [package]
 name = "actix-codec"
-version = "0.4.0-beta.1"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+version = "0.4.1"
+authors = [
+    "Nikolay Kim <fafhrd91@gmail.com>",
+    "Rob Ede <robjtede@icloud.com>",
+]
 description = "Codec utilities for working with framed protocols"
 keywords = ["network", "framework", "async", "futures"]
-homepage = "https://actix.rs"
-repository = "https://github.com/actix/actix-net.git"
-documentation = "https://docs.rs/actix-codec"
+repository = "https://github.com/actix/actix-net"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
 edition = "2018"
@@ -21,6 +22,15 @@ bytes = "1"
 futures-core = { version = "0.3.7", default-features = false }
 futures-sink = { version = "0.3.7", default-features = false }
 log = "0.4"
+memchr = "2.3"
 pin-project-lite = "0.2"
-tokio = "1"
+tokio = "1.5.1"
 tokio-util = { version = "0.6", features = ["codec", "io"] }
+
+[dev-dependencies]
+criterion = { version = "0.3", features = ["html_reports"] }
+tokio-test = "0.4.2"
+
+[[bench]]
+name = "lines"
+harness = false

actix-codec/benches/lines.rs

@@ -0,0 +1,57 @@
+use bytes::BytesMut;
+use criterion::{criterion_group, criterion_main, Criterion};
+
+const INPUT: &[u8] = include_bytes!("./lorem.txt");
+
+fn bench_lines_codec(c: &mut Criterion) {
+    let mut decode_group = c.benchmark_group("lines decode");
+
+    decode_group.bench_function("actix", |b| {
+        b.iter(|| {
+            use actix_codec::Decoder as _;
+
+            let mut codec = actix_codec::LinesCodec::default();
+            let mut buf = BytesMut::from(INPUT);
+            while let Ok(Some(_bytes)) = codec.decode_eof(&mut buf) {}
+        });
+    });
+
+    decode_group.bench_function("tokio", |b| {
+        b.iter(|| {
+            use tokio_util::codec::Decoder as _;
+
+            let mut codec = tokio_util::codec::LinesCodec::new();
+            let mut buf = BytesMut::from(INPUT);
+            while let Ok(Some(_bytes)) = codec.decode_eof(&mut buf) {}
+        });
+    });
+
+    decode_group.finish();
+
+    let mut encode_group = c.benchmark_group("lines encode");
+
+    encode_group.bench_function("actix", |b| {
+        b.iter(|| {
+            use actix_codec::Encoder as _;
+
+            let mut codec = actix_codec::LinesCodec::default();
+            let mut buf = BytesMut::new();
+            codec.encode("123", &mut buf).unwrap();
+        });
+    });
+
+    encode_group.bench_function("tokio", |b| {
+        b.iter(|| {
+            use tokio_util::codec::Encoder as _;
+
+            let mut codec = tokio_util::codec::LinesCodec::new();
+            let mut buf = BytesMut::new();
+            codec.encode("123", &mut buf).unwrap();
+        });
+    });
+
+    encode_group.finish();
+}
+
+criterion_group!(benches, bench_lines_codec);
+criterion_main!(benches);

actix-codec/benches/lorem.txt

@@ -0,0 +1,5 @@
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. In tortor quam, pulvinar sit amet vestibulum eget, tincidunt non urna. Sed eu sem in felis malesuada venenatis. Suspendisse volutpat aliquet nisi, in condimentum nibh convallis id. Quisque gravida felis scelerisque ipsum aliquam consequat. Praesent libero odio, malesuada vitae odio quis, aliquam aliquet enim. In fringilla ut turpis nec pharetra. Duis eu posuere metus. Sed a aliquet massa. Mauris non tempus mi, quis mattis libero. Vivamus ornare ex at semper cursus. Vestibulum sed facilisis erat, aliquet mollis est. In interdum, magna iaculis ultricies elementum, mi ante vestibulum mauris, nec viverra turpis lorem quis ante. Proin in auctor erat. Vivamus dictum congue massa, fermentum bibendum leo pretium quis. Integer dapibus sodales ligula, sit amet imperdiet felis suscipit eu. Phasellus non ornare enim.
+Nam feugiat neque sit amet hendrerit rhoncus. Nunc suscipit molestie vehicula. Aenean vulputate porttitor augue, sit amet molestie dolor volutpat vitae. Nulla vitae condimentum eros. Aliquam tristique purus at metus lacinia egestas. Cras euismod lorem eu orci lobortis, sed tincidunt nisl laoreet. Ut suscipit fermentum mi, et euismod tortor. Pellentesque vitae tempor quam, sed dignissim mi. Suspendisse luctus lacus vitae ligula blandit vehicula. Quisque interdum iaculis tincidunt. Nunc elementum mi vitae tempor placerat. Suspendisse potenti. Donec blandit laoreet ipsum, quis rhoncus velit vulputate sed.
+Aliquam suscipit lectus eros, at maximus dolor efficitur quis. Integer blandit tortor orci, nec mattis nunc eleifend ac. Mauris pharetra vel quam quis lacinia. Duis lobortis condimentum nunc ut facilisis. Praesent arcu nisi, porta sit amet viverra sit amet, pellentesque ut nisi. Nunc gravida tortor eu ligula tempus, in interdum magna pretium. Fusce eu ornare sapien. Nullam pellentesque cursus eros. Nam orci massa, faucibus eget leo eget, elementum vulputate erat. Fusce vehicula augue et dui hendrerit vulputate. Mauris neque lacus, porttitor ut condimentum id, efficitur ac neque. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia curae; Donec accumsan, lectus fermentum elementum tristique, ipsum tortor mollis ante, non lacinia nibh ex quis sapien.
+Donec pharetra, elit eget rutrum luctus, urna ligula facilisis lorem, sit amet rhoncus ante est eu mi. Vestibulum vestibulum ultricies interdum. Nulla tincidunt ante non hendrerit venenatis. Curabitur vestibulum turpis erat, id efficitur quam venenatis eu. Fusce nulla sem, dapibus vel quam feugiat, ornare fermentum ligula. Praesent tempus tincidunt mauris, non pellentesque felis varius in. Aenean eu arcu ligula. Morbi dapibus maximus nulla a pharetra. Fusce leo metus, luctus ut cursus non, sollicitudin non lectus. Integer pellentesque eleifend erat, vel gravida purus tempus a. Mauris id vestibulum quam. Nunc vitae ullamcorper metus, pharetra placerat enim. Fusce in ultrices nisl. Curabitur justo mauris, dignissim in aliquam sit amet, sollicitudin ut risus. Cras tempor rutrum justo, non tincidunt est maximus at.
+Aliquam ac velit tincidunt, ullamcorper velit sit amet, pulvinar nisi. Nullam rhoncus rhoncus egestas. Cras ac luctus nisi. Mauris sit amet risus at magna volutpat ultrices quis ac dui. Aliquam condimentum tellus purus, vel sagittis odio vulputate at. Sed ut finibus tellus. Aliquam tincidunt vehicula diam. 

actix-codec/src/bcodec.rs

@@ -1,11 +1,10 @@
-use bytes::{Buf, Bytes, BytesMut};
 use std::io;
 
+use bytes::{Buf, Bytes, BytesMut};
+
 use super::{Decoder, Encoder};
 
-/// Bytes codec.
-///
-/// Reads/Writes chunks of bytes from a stream.
+/// Bytes codec. Reads/writes chunks of bytes from a stream.
 #[derive(Debug, Copy, Clone)]
 pub struct BytesCodec;
 

actix-codec/src/framed.rs

@@ -21,14 +21,13 @@ bitflags::bitflags! {
 }
 
 pin_project_lite::pin_project! {
-    /// A unified `Stream` and `Sink` interface to an underlying I/O object, using
-    /// the `Encoder` and `Decoder` traits to encode and decode frames.
+    /// A unified `Stream` and `Sink` interface to an underlying I/O object, using the `Encoder` and
+    /// `Decoder` traits to encode and decode frames.
     ///
-    /// Raw I/O objects work with byte sequences, but higher-level code usually
-    /// wants to batch these into meaningful chunks, called "frames". This
-    /// method layers framing on top of an I/O object, by using the `Encoder`/`Decoder`
-    /// traits to handle encoding and decoding of message frames. Note that
-    /// the incoming and outgoing frame types may be distinct.
+    /// Raw I/O objects work with byte sequences, but higher-level code usually wants to batch these
+    /// into meaningful chunks, called "frames". This method layers framing on top of an I/O object,
+    /// by using the `Encoder`/`Decoder` traits to handle encoding and decoding of message frames.
+    /// Note that the incoming and outgoing frame types may be distinct.
     pub struct Framed<T, U> {
         #[pin]
         io: T,
@@ -44,10 +43,9 @@ where
     T: AsyncRead + AsyncWrite,
     U: Decoder,
 {
-    /// This function returns a *single* object that is both `Stream` and
-    /// `Sink`; grouping this into a single object is often useful for layering
-    /// things like gzip or TLS, which require both read and write access to the
-    /// underlying object.
+    /// This function returns a *single* object that is both `Stream` and `Sink`; grouping this into
+    /// a single object is often useful for layering things like gzip or TLS, which require both
+    /// read and write access to the underlying object.
     pub fn new(io: T, codec: U) -> Framed<T, U> {
         Framed {
             io,
@@ -70,21 +68,18 @@ impl<T, U> Framed<T, U> {
         &mut self.codec
     }
 
-    /// Returns a reference to the underlying I/O stream wrapped by
-    /// `Frame`.
+    /// Returns a reference to the underlying I/O stream wrapped by `Frame`.
     ///
-    /// Note that care should be taken to not tamper with the underlying stream
-    /// of data coming in as it may corrupt the stream of frames otherwise
-    /// being worked with.
+    /// Note that care should be taken to not tamper with the underlying stream of data coming in as
+    /// it may corrupt the stream of frames otherwise being worked with.
     pub fn io_ref(&self) -> &T {
         &self.io
     }
 
     /// Returns a mutable reference to the underlying I/O stream.
     ///
-    /// Note that care should be taken to not tamper with the underlying stream
-    /// of data coming in as it may corrupt the stream of frames otherwise
-    /// being worked with.
+    /// Note that care should be taken to not tamper with the underlying stream of data coming in as
+    /// it may corrupt the stream of frames otherwise being worked with.
     pub fn io_mut(&mut self) -> &mut T {
         &mut self.io
     }
@@ -183,16 +178,15 @@ impl<T, U> Framed<T, U> {
         U: Decoder,
     {
         loop {
-            let mut this = self.as_mut().project();
-            // Repeatedly call `decode` or `decode_eof` as long as it is
-            // "readable". Readable is defined as not having returned `None`. If
-            // the upstream has returned EOF, and the decoder is no longer
-            // readable, it can be assumed that the decoder will never become
+            let this = self.as_mut().project();
+            // Repeatedly call `decode` or `decode_eof` as long as it is "readable". Readable is
+            // defined as not having returned `None`. If the upstream has returned EOF, and the
+            // decoder is no longer readable, it can be assumed that the decoder will never become
             // readable again, at which point the stream is terminated.
 
             if this.flags.contains(Flags::READABLE) {
                 if this.flags.contains(Flags::EOF) {
-                    match this.codec.decode_eof(&mut this.read_buf) {
+                    match this.codec.decode_eof(this.read_buf) {
                         Ok(Some(frame)) => return Poll::Ready(Some(Ok(frame))),
                         Ok(None) => return Poll::Ready(None),
                         Err(e) => return Poll::Ready(Some(Err(e))),
@@ -201,7 +195,7 @@ impl<T, U> Framed<T, U> {
 
                 log::trace!("attempting to decode a frame");
 
-                match this.codec.decode(&mut this.read_buf) {
+                match this.codec.decode(this.read_buf) {
                     Ok(Some(frame)) => {
                         log::trace!("frame decoded from buffer");
                         return Poll::Ready(Some(Ok(frame)));
@@ -215,7 +209,7 @@ impl<T, U> Framed<T, U> {
 
             debug_assert!(!this.flags.contains(Flags::EOF));
 
-            // Otherwise, try to read more data and try again. Make sure we've got room
+            // Otherwise, try to read more data and try again. Make sure we've got room.
             let remaining = this.read_buf.capacity() - this.read_buf.len();
             if remaining < LW {
                 this.read_buf.reserve(HW - remaining)
@@ -306,11 +300,11 @@ where
 {
     type Error = U::Error;
 
-    fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+    fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         if self.is_write_ready() {
             Poll::Ready(Ok(()))
         } else {
-            Poll::Pending
+            self.flush(cx)
         }
     }
 
@@ -341,13 +335,12 @@ where
 }
 
 impl<T, U> Framed<T, U> {
-    /// This function returns a *single* object that is both `Stream` and
-    /// `Sink`; grouping this into a single object is often useful for layering
-    /// things like gzip or TLS, which require both read and write access to the
-    /// underlying object.
+    /// This function returns a *single* object that is both `Stream` and `Sink`; grouping this into
+    /// a single object is often useful for layering things like gzip or TLS, which require both
+    /// read and write access to the underlying object.
     ///
-    /// These objects take a stream, a read buffer and a write buffer. These
-    /// fields can be obtained from an existing `Framed` with the `into_parts` method.
+    /// These objects take a stream, a read buffer and a write buffer. These fields can be obtained
+    /// from an existing `Framed` with the `into_parts` method.
     pub fn from_parts(parts: FramedParts<T, U>) -> Framed<T, U> {
         Framed {
             io: parts.io,
@@ -358,12 +351,11 @@ impl<T, U> Framed<T, U> {
         }
     }
 
-    /// Consumes the `Frame`, returning its underlying I/O stream, the buffer
-    /// with unprocessed data, and the codec.
+    /// Consumes the `Frame`, returning its underlying I/O stream, the buffer with unprocessed data,
+    /// and the codec.
     ///
-    /// Note that care should be taken to not tamper with the underlying stream
-    /// of data coming in as it may corrupt the stream of frames otherwise
-    /// being worked with.
+    /// Note that care should be taken to not tamper with the underlying stream of data coming in as
+    /// it may corrupt the stream of frames otherwise being worked with.
     pub fn into_parts(self) -> FramedParts<T, U> {
         FramedParts {
             io: self.io,
@@ -376,14 +368,15 @@ impl<T, U> Framed<T, U> {
 }
 
 /// `FramedParts` contains an export of the data of a Framed transport.
-/// It can be used to construct a new `Framed` with a different codec.
-/// It contains all current buffers and the inner transport.
+///
+/// It can be used to construct a new `Framed` with a different codec. It contains all current
+/// buffers and the inner transport.
 #[derive(Debug)]
 pub struct FramedParts<T, U> {
-    /// The inner transport used to read bytes to and write bytes to
+    /// The inner transport used to read bytes to and write bytes to.
     pub io: T,
 
-    /// The codec
+    /// The codec object.
     pub codec: U,
 
     /// The buffer with read but unprocessed data.
@@ -396,7 +389,7 @@ pub struct FramedParts<T, U> {
 }
 
 impl<T, U> FramedParts<T, U> {
-    /// Create a new, default, `FramedParts`
+    /// Creates a new default `FramedParts`.
     pub fn new(io: T, codec: U) -> FramedParts<T, U> {
         FramedParts {
             io,
@@ -407,7 +400,7 @@ impl<T, U> FramedParts<T, U> {
         }
     }
 
-    /// Create a new `FramedParts` with read buffer
+    /// Creates a new `FramedParts` with read buffer.
     pub fn with_read_buf(io: T, codec: U, read_buf: BytesMut) -> FramedParts<T, U> {
         FramedParts {
             io,

actix-codec/src/lib.rs

@@ -7,16 +7,18 @@
 //! [`Sink`]: futures_sink::Sink
 //! [`Stream`]: futures_core::Stream
 
-#![deny(rust_2018_idioms, nonstandard_style)]
+#![deny(rust_2018_idioms, nonstandard_style, future_incompatible)]
 #![warn(missing_docs)]
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
 mod bcodec;
 mod framed;
+mod lines;
 
 pub use self::bcodec::BytesCodec;
 pub use self::framed::{Framed, FramedParts};
+pub use self::lines::LinesCodec;
 
 pub use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
 pub use tokio_util::codec::{Decoder, Encoder};

actix-codec/src/lines.rs

@@ -0,0 +1,158 @@
+use std::io;
+
+use bytes::{Buf, BufMut, Bytes, BytesMut};
+use memchr::memchr;
+
+use super::{Decoder, Encoder};
+
+/// Lines codec. Reads/writes line delimited strings.
+///
+/// Will split input up by LF or CRLF delimiters. I.e. carriage return characters at the end of
+/// lines are not preserved.
+#[derive(Debug, Copy, Clone, Default)]
+#[non_exhaustive]
+pub struct LinesCodec;
+
+impl<T: AsRef<str>> Encoder<T> for LinesCodec {
+    type Error = io::Error;
+
+    #[inline]
+    fn encode(&mut self, item: T, dst: &mut BytesMut) -> Result<(), Self::Error> {
+        let item = item.as_ref();
+        dst.reserve(item.len() + 1);
+        dst.put_slice(item.as_bytes());
+        dst.put_u8(b'\n');
+        Ok(())
+    }
+}
+
+impl Decoder for LinesCodec {
+    type Item = String;
+    type Error = io::Error;
+
+    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        if src.is_empty() {
+            return Ok(None);
+        }
+
+        let len = match memchr(b'\n', src) {
+            Some(n) => n,
+            None => {
+                return Ok(None);
+            }
+        };
+
+        // split up to new line char
+        let mut buf = src.split_to(len);
+        debug_assert_eq!(len, buf.len());
+
+        // remove new line char from source
+        src.advance(1);
+
+        match buf.last() {
+            // remove carriage returns at the end of buf
+            Some(b'\r') => buf.truncate(len - 1),
+
+            // line is empty
+            None => return Ok(Some(String::new())),
+
+            _ => {}
+        }
+
+        try_into_utf8(buf.freeze())
+    }
+
+    fn decode_eof(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        match self.decode(src)? {
+            Some(frame) => Ok(Some(frame)),
+            None if src.is_empty() => Ok(None),
+            None => {
+                let buf = match src.last() {
+                    // if last line ends in a CR then take everything up to it
+                    Some(b'\r') => src.split_to(src.len() - 1),
+
+                    // take all bytes from source
+                    _ => src.split(),
+                };
+
+                if buf.is_empty() {
+                    return Ok(None);
+                }
+
+                try_into_utf8(buf.freeze())
+            }
+        }
+    }
+}
+
+// Attempts to convert bytes into a `String`.
+fn try_into_utf8(buf: Bytes) -> io::Result<Option<String>> {
+    String::from_utf8(buf.to_vec())
+        .map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))
+        .map(Some)
+}
+
+#[cfg(test)]
+mod tests {
+    use bytes::BufMut as _;
+
+    use super::*;
+
+    #[test]
+    fn lines_decoder() {
+        let mut codec = LinesCodec::default();
+        let mut buf = BytesMut::from("\nline 1\nline 2\r\nline 3\n\r\n\r");
+
+        assert_eq!("", codec.decode(&mut buf).unwrap().unwrap());
+        assert_eq!("line 1", codec.decode(&mut buf).unwrap().unwrap());
+        assert_eq!("line 2", codec.decode(&mut buf).unwrap().unwrap());
+        assert_eq!("line 3", codec.decode(&mut buf).unwrap().unwrap());
+        assert_eq!("", codec.decode(&mut buf).unwrap().unwrap());
+        assert!(codec.decode(&mut buf).unwrap().is_none());
+        assert!(codec.decode_eof(&mut buf).unwrap().is_none());
+
+        buf.put_slice(b"k");
+        assert!(codec.decode(&mut buf).unwrap().is_none());
+        assert_eq!("\rk", codec.decode_eof(&mut buf).unwrap().unwrap());
+
+        assert!(codec.decode(&mut buf).unwrap().is_none());
+        assert!(codec.decode_eof(&mut buf).unwrap().is_none());
+    }
+
+    #[test]
+    fn lines_encoder() {
+        let mut codec = LinesCodec::default();
+
+        let mut buf = BytesMut::new();
+
+        codec.encode("", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"\n");
+
+        codec.encode("test", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"\ntest\n");
+
+        codec.encode("a\nb", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"\ntest\na\nb\n");
+    }
+
+    #[test]
+    fn lines_encoder_no_overflow() {
+        let mut codec = LinesCodec::default();
+
+        let mut buf = BytesMut::new();
+        codec.encode("1234567", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"1234567\n");
+
+        let mut buf = BytesMut::new();
+        codec.encode("12345678", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"12345678\n");
+
+        let mut buf = BytesMut::new();
+        codec.encode("123456789111213", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"123456789111213\n");
+
+        let mut buf = BytesMut::new();
+        codec.encode("1234567891112131", &mut buf).unwrap();
+        assert_eq!(&buf[..], b"1234567891112131\n");
+    }
+}

actix-codec/tests/test_framed_sink.rs

@@ -0,0 +1,221 @@
+use actix_codec::*;
+use bytes::Buf;
+use bytes::{BufMut, BytesMut};
+use futures_sink::Sink;
+use std::collections::VecDeque;
+use std::io::{self, Write};
+use std::pin::Pin;
+use std::task::Poll::{Pending, Ready};
+use std::task::{Context, Poll};
+use tokio_test::{assert_ready, task};
+
+macro_rules! bilateral {
+    ($($x:expr,)*) => {{
+        let mut v = VecDeque::new();
+        v.extend(vec![$($x),*]);
+        Bilateral { calls: v }
+    }};
+}
+
+macro_rules! assert_ready {
+    ($e:expr) => {{
+        use core::task::Poll::*;
+        match $e {
+            Ready(v) => v,
+            Pending => panic!("pending"),
+        }
+    }};
+    ($e:expr, $($msg:tt),+) => {{
+        use core::task::Poll::*;
+        match $e {
+            Ready(v) => v,
+            Pending => {
+                let msg = format_args!($($msg),+);
+                panic!("pending; {}", msg)
+            }
+        }
+    }};
+}
+
+#[derive(Debug)]
+pub struct Bilateral {
+    pub calls: VecDeque<io::Result<Vec<u8>>>,
+}
+
+impl Write for Bilateral {
+    fn write(&mut self, src: &[u8]) -> io::Result<usize> {
+        match self.calls.pop_front() {
+            Some(Ok(data)) => {
+                assert!(src.len() >= data.len());
+                assert_eq!(&data[..], &src[..data.len()]);
+                Ok(data.len())
+            }
+            Some(Err(e)) => Err(e),
+            None => panic!("unexpected write; {:?}", src),
+        }
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+}
+
+impl AsyncWrite for Bilateral {
+    fn poll_write(
+        self: Pin<&mut Self>,
+        _cx: &mut Context<'_>,
+        buf: &[u8],
+    ) -> Poll<Result<usize, io::Error>> {
+        match Pin::get_mut(self).write(buf) {
+            Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => Pending,
+            other => Ready(other),
+        }
+    }
+    fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<(), io::Error>> {
+        match Pin::get_mut(self).flush() {
+            Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => Pending,
+            other => Ready(other),
+        }
+    }
+    fn poll_shutdown(
+        self: Pin<&mut Self>,
+        _cx: &mut Context<'_>,
+    ) -> Poll<Result<(), io::Error>> {
+        unimplemented!()
+    }
+}
+
+impl AsyncRead for Bilateral {
+    fn poll_read(
+        mut self: Pin<&mut Self>,
+        _: &mut Context<'_>,
+        buf: &mut ReadBuf<'_>,
+    ) -> Poll<Result<(), std::io::Error>> {
+        use io::ErrorKind::WouldBlock;
+
+        match self.calls.pop_front() {
+            Some(Ok(data)) => {
+                debug_assert!(buf.remaining() >= data.len());
+                buf.put_slice(&data);
+                Ready(Ok(()))
+            }
+            Some(Err(ref e)) if e.kind() == WouldBlock => Pending,
+            Some(Err(e)) => Ready(Err(e)),
+            None => Ready(Ok(())),
+        }
+    }
+}
+
+pub struct U32;
+
+impl Encoder<u32> for U32 {
+    type Error = io::Error;
+
+    fn encode(&mut self, item: u32, dst: &mut BytesMut) -> io::Result<()> {
+        // Reserve space
+        dst.reserve(4);
+        dst.put_u32(item);
+        Ok(())
+    }
+}
+
+impl Decoder for U32 {
+    type Item = u32;
+    type Error = io::Error;
+
+    fn decode(&mut self, buf: &mut BytesMut) -> io::Result<Option<u32>> {
+        if buf.len() < 4 {
+            return Ok(None);
+        }
+
+        let n = buf.split_to(4).get_u32();
+        Ok(Some(n))
+    }
+}
+
+#[test]
+fn test_write_hits_highwater_mark() {
+    // see here for what this test is based on:
+    // https://github.com/tokio-rs/tokio/blob/75c07770bfbfea4e5fd914af819c741ed9c3fc36/tokio-util/tests/framed_write.rs#L69
+
+    const ITER: usize = 2 * 1024;
+
+    let mut bi = bilateral! {
+        Err(io::Error::new(io::ErrorKind::WouldBlock, "not ready")),
+        Ok(b"".to_vec()),
+    };
+
+    for i in 0..=ITER {
+        let mut b = BytesMut::with_capacity(4);
+        b.put_u32(i as u32);
+
+        // Append to the end
+        match bi.calls.back_mut().unwrap() {
+            Ok(ref mut data) => {
+                // Write in 2kb chunks
+                if data.len() < ITER {
+                    data.extend_from_slice(&b[..]);
+                    continue;
+                } // else fall through and create a new buffer
+            }
+            _ => unreachable!(),
+        }
+
+        // Push a new new chunk
+        bi.calls.push_back(Ok(b[..].to_vec()));
+    }
+
+    assert_eq!(bi.calls.len(), 6);
+    let mut framed = Framed::new(bi, U32);
+    // Send 8KB. This fills up FramedWrite2 buffer
+    let mut task = task::spawn(());
+    task.enter(|cx, _| {
+        // Send 8KB. This fills up Framed buffer
+        for i in 0..ITER {
+            {
+                #[allow(unused_mut)]
+                let mut framed = Pin::new(&mut framed);
+                assert!(assert_ready!(framed.poll_ready(cx)).is_ok());
+            }
+
+            #[allow(unused_mut)]
+            let mut framed = Pin::new(&mut framed);
+            // write the buffer
+            assert!(framed.start_send(i as u32).is_ok());
+        }
+
+        {
+            #[allow(unused_mut)]
+            let mut framed = Pin::new(&mut framed);
+
+            // Now we poll_ready which forces a flush. The bilateral pops the front message
+            // and decides to block.
+            assert!(framed.poll_ready(cx).is_pending());
+        }
+
+        {
+            #[allow(unused_mut)]
+            let mut framed = Pin::new(&mut framed);
+            // We poll again, forcing another flush, which this time succeeds
+            // The whole 8KB buffer is flushed
+            assert!(assert_ready!(framed.poll_ready(cx)).is_ok());
+        }
+
+        {
+            #[allow(unused_mut)]
+            let mut framed = Pin::new(&mut framed);
+            // Send more data. This matches the final message expected by the bilateral
+            assert!(framed.start_send(ITER as u32).is_ok());
+        }
+
+        {
+            #[allow(unused_mut)]
+            let mut framed = Pin::new(&mut framed);
+            // Flush the rest of the buffer
+            assert!(assert_ready!(framed.poll_flush(cx)).is_ok());
+        }
+
+        // Ensure the mock is empty
+        assert_eq!(0, Pin::new(&framed).get_ref().io_ref().calls.len());
+    });
+}

actix-macros/CHANGES.md

@@ -3,6 +3,25 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 0.2.3 - 2021-10-19
+* Fix test macro in presence of other imports named "test". [#399]
+
+[#399]: https://github.com/actix/actix-net/pull/399
+
+
+## 0.2.2 - 2021-10-14
+* Improve error recovery potential when macro input is invalid. [#391]
+* Allow custom `System`s on test macro. [#391]
+
+[#391]: https://github.com/actix/actix-net/pull/391
+
+
+## 0.2.1 - 2021-02-02
+* Add optional argument `system` to `main` macro which can be used to specify the path to `actix_rt::System` (useful for re-exports). [#363]
+
+[#363]: https://github.com/actix/actix-net/pull/363
+
+
 ## 0.2.0 - 2021-02-02
 * Update to latest `actix_rt::System::new` signature. [#261]
 

actix-macros/Cargo.toml

@@ -1,10 +1,13 @@
 [package]
 name = "actix-macros"
-version = "0.2.0"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+version = "0.2.3"
+authors = [
+    "Nikolay Kim <fafhrd91@gmail.com>",
+    "Ibraheem Ahmed <ibrah1440@gmail.com>",
+    "Rob Ede <robjtede@icloud.com>",
+]
 description = "Macros for Actix system and runtime"
 repository = "https://github.com/actix/actix-net.git"
-documentation = "https://docs.rs/actix-macros"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
 edition = "2018"
@@ -20,4 +23,5 @@ syn = { version = "^1", features = ["full"] }
 actix-rt = "2.0.0"
 
 futures-util = { version = "0.3.7", default-features = false }
+rustversion = "1"
 trybuild = "1"

actix-macros/src/lib.rs

@@ -27,8 +27,15 @@ use quote::quote;
 #[allow(clippy::needless_doctest_main)]
 #[proc_macro_attribute]
 #[cfg(not(test))] // Work around for rust-lang/rust#62127
-pub fn main(_: TokenStream, item: TokenStream) -> TokenStream {
-    let mut input = syn::parse_macro_input!(item as syn::ItemFn);
+pub fn main(args: TokenStream, item: TokenStream) -> TokenStream {
+    let mut input = match syn::parse::<syn::ItemFn>(item.clone()) {
+        Ok(input) => input,
+        // on parse err, make IDEs happy; see fn docs
+        Err(err) => return input_and_compile_error(item, err),
+    };
+
+    let args = syn::parse_macro_input!(args as syn::AttributeArgs);
+
     let attrs = &input.attrs;
     let vis = &input.vis;
     let sig = &mut input.sig;
@@ -43,13 +50,47 @@ pub fn main(_: TokenStream, item: TokenStream) -> TokenStream {
         .into();
     }
 
+    let mut system = syn::parse_str::<syn::Path>("::actix_rt::System").unwrap();
+
+    for arg in &args {
+        match arg {
+            syn::NestedMeta::Meta(syn::Meta::NameValue(syn::MetaNameValue {
+                lit: syn::Lit::Str(lit),
+                path,
+                ..
+            })) => match path
+                .get_ident()
+                .map(|i| i.to_string().to_lowercase())
+                .as_deref()
+            {
+                Some("system") => match lit.parse() {
+                    Ok(path) => system = path,
+                    Err(_) => {
+                        return syn::Error::new_spanned(lit, "Expected path")
+                            .to_compile_error()
+                            .into();
+                    }
+                },
+                _ => {
+                    return syn::Error::new_spanned(arg, "Unknown attribute specified")
+                        .to_compile_error()
+                        .into();
+                }
+            },
+            _ => {
+                return syn::Error::new_spanned(arg, "Unknown attribute specified")
+                    .to_compile_error()
+                    .into();
+            }
+        }
+    }
+
     sig.asyncness = None;
 
     (quote! {
         #(#attrs)*
         #vis #sig {
-            actix_rt::System::new()
-                .block_on(async move { #body })
+            <#system>::new().block_on(async move { #body })
         }
     })
     .into()
@@ -65,8 +106,15 @@ pub fn main(_: TokenStream, item: TokenStream) -> TokenStream {
 /// }
 /// ```
 #[proc_macro_attribute]
-pub fn test(_: TokenStream, item: TokenStream) -> TokenStream {
-    let mut input = syn::parse_macro_input!(item as syn::ItemFn);
+pub fn test(args: TokenStream, item: TokenStream) -> TokenStream {
+    let mut input = match syn::parse::<syn::ItemFn>(item.clone()) {
+        Ok(input) => input,
+        // on parse err, make IDEs happy; see fn docs
+        Err(err) => return input_and_compile_error(item, err),
+    };
+
+    let args = syn::parse_macro_input!(args as syn::AttributeArgs);
+
     let attrs = &input.attrs;
     let vis = &input.vis;
     let sig = &mut input.sig;
@@ -91,18 +139,64 @@ pub fn test(_: TokenStream, item: TokenStream) -> TokenStream {
     sig.asyncness = None;
 
     let missing_test_attr = if has_test_attr {
-        quote!()
+        quote! {}
     } else {
-        quote!(#[test])
+        quote! { #[::core::prelude::v1::test] }
     };
 
+    let mut system = syn::parse_str::<syn::Path>("::actix_rt::System").unwrap();
+
+    for arg in &args {
+        match arg {
+            syn::NestedMeta::Meta(syn::Meta::NameValue(syn::MetaNameValue {
+                lit: syn::Lit::Str(lit),
+                path,
+                ..
+            })) => match path
+                .get_ident()
+                .map(|i| i.to_string().to_lowercase())
+                .as_deref()
+            {
+                Some("system") => match lit.parse() {
+                    Ok(path) => system = path,
+                    Err(_) => {
+                        return syn::Error::new_spanned(lit, "Expected path")
+                            .to_compile_error()
+                            .into();
+                    }
+                },
+                _ => {
+                    return syn::Error::new_spanned(arg, "Unknown attribute specified")
+                        .to_compile_error()
+                        .into();
+                }
+            },
+            _ => {
+                return syn::Error::new_spanned(arg, "Unknown attribute specified")
+                    .to_compile_error()
+                    .into();
+            }
+        }
+    }
+
     (quote! {
         #missing_test_attr
         #(#attrs)*
         #vis #sig {
-            actix_rt::System::new()
-                .block_on(async { #body })
+            <#system>::new().block_on(async { #body })
         }
     })
     .into()
 }
+
+/// Converts the error to a token stream and appends it to the original input.
+///
+/// Returning the original input in addition to the error is good for IDEs which can gracefully
+/// recover and show more precise errors within the macro body.
+///
+/// See <https://github.com/rust-analyzer/rust-analyzer/issues/10468> for more info.
+fn input_and_compile_error(mut item: TokenStream, err: syn::Error) -> TokenStream {
+    let compile_err = TokenStream::from(err.to_compile_error());
+    item.extend(compile_err);
+    item
+}

actix-macros/tests/trybuild.rs

@@ -1,11 +1,18 @@
+#[rustversion::stable(1.46)] // MSRV
 #[test]
 fn compile_macros() {
     let t = trybuild::TestCases::new();
     t.pass("tests/trybuild/main-01-basic.rs");
     t.compile_fail("tests/trybuild/main-02-only-async.rs");
     t.pass("tests/trybuild/main-03-fn-params.rs");
+    t.pass("tests/trybuild/main-04-system-path.rs");
+    t.compile_fail("tests/trybuild/main-05-system-expect-path.rs");
+    t.compile_fail("tests/trybuild/main-06-unknown-attr.rs");
 
     t.pass("tests/trybuild/test-01-basic.rs");
     t.pass("tests/trybuild/test-02-keep-attrs.rs");
     t.compile_fail("tests/trybuild/test-03-only-async.rs");
+    t.pass("tests/trybuild/test-04-system-path.rs");
+    t.compile_fail("tests/trybuild/test-05-system-expect-path.rs");
+    t.compile_fail("tests/trybuild/test-06-unknown-attr.rs");
 }

actix-macros/tests/trybuild/main-04-system-path.rs

@@ -0,0 +1,8 @@
+mod system {
+    pub use actix_rt::System as MySystem;
+}
+
+#[actix_rt::main(system = "system::MySystem")]
+async fn main() {
+    futures_util::future::ready(()).await
+}

actix-macros/tests/trybuild/main-05-system-expect-path.rs

@@ -0,0 +1,4 @@
+#[actix_rt::main(system = "!@#*&")]
+async fn main2() {}
+
+fn main() {}

actix-macros/tests/trybuild/main-05-system-expect-path.stderr

@@ -0,0 +1,5 @@
+error: Expected path
+ --> $DIR/main-05-system-expect-path.rs:1:27
+  |
+1 | #[actix_rt::main(system = "!@#*&")]
+  |                           ^^^^^^^

actix-macros/tests/trybuild/main-06-unknown-attr.rs

@@ -0,0 +1,7 @@
+#[actix_rt::main(foo = "bar")]
+async fn async_main() {}
+
+#[actix_rt::main(bar::baz)]
+async fn async_main2() {}
+
+fn main() {}

actix-macros/tests/trybuild/main-06-unknown-attr.stderr

@@ -0,0 +1,11 @@
+error: Unknown attribute specified
+ --> $DIR/main-06-unknown-attr.rs:1:18
+  |
+1 | #[actix_rt::main(foo = "bar")]
+  |                  ^^^^^^^^^^^
+
+error: Unknown attribute specified
+ --> $DIR/main-06-unknown-attr.rs:4:18
+  |
+4 | #[actix_rt::main(bar::baz)]
+  |                  ^^^^^^^^

actix-macros/tests/trybuild/test-04-system-path.rs

@@ -0,0 +1,10 @@
+mod system {
+    pub use actix_rt::System as MySystem;
+}
+
+#[actix_rt::test(system = "system::MySystem")]
+async fn my_test() {
+    futures_util::future::ready(()).await
+}
+
+fn main() {}

actix-macros/tests/trybuild/test-05-system-expect-path.rs

@@ -0,0 +1,4 @@
+#[actix_rt::test(system = "!@#*&")]
+async fn my_test() {}
+
+fn main() {}

actix-macros/tests/trybuild/test-05-system-expect-path.stderr

@@ -0,0 +1,5 @@
+error: Expected path
+ --> $DIR/test-05-system-expect-path.rs:1:27
+  |
+1 | #[actix_rt::test(system = "!@#*&")]
+  |                           ^^^^^^^

actix-macros/tests/trybuild/test-06-unknown-attr.rs

@@ -0,0 +1,7 @@
+#[actix_rt::test(foo = "bar")]
+async fn my_test_1() {}
+
+#[actix_rt::test(bar::baz)]
+async fn my_test_2() {}
+
+fn main() {}

actix-macros/tests/trybuild/test-06-unknown-attr.stderr

@@ -0,0 +1,11 @@
+error: Unknown attribute specified
+ --> $DIR/test-06-unknown-attr.rs:1:18
+  |
+1 | #[actix_rt::test(foo = "bar")]
+  |                  ^^^^^^^^^^^
+
+error: Unknown attribute specified
+ --> $DIR/test-06-unknown-attr.rs:4:18
+  |
+4 | #[actix_rt::test(bar::baz)]
+  |                  ^^^^^^^^

actix-router/CHANGES.md

@@ -1,67 +0,0 @@
-# Changes
-
-## Unreleased - 2021-xx-xx
-
-
-## 0.2.7 - 2021-02-06
-* Add `Router::recognize_checked` [#247]
-
-[#247]: https://github.com/actix/actix-net/pull/247
-
-
-## 0.2.6 - 2021-01-09
-* Use `bytestring` version range compatible with Bytes v1.0. [#246]
-
-[#246]: https://github.com/actix/actix-net/pull/246
-
-
-## 0.2.5 - 2020-09-20
-* Fix `from_hex()` method
-
-
-## 0.2.4 - 2019-12-31
-* Add `ResourceDef::resource_path_named()` path generation method
-
-
-## 0.2.3 - 2019-12-25
-* Add impl `IntoPattern` for `&String`
-
-
-## 0.2.2 - 2019-12-25
-* Use `IntoPattern` for `RouterBuilder::path()`
-
-
-## 0.2.1 - 2019-12-25
-* Add `IntoPattern` trait
-* Add multi-pattern resources
-
-
-## 0.2.0 - 2019-12-07
-* Update http to 0.2
-* Update regex to 1.3
-* Use bytestring instead of string
-
-
-## 0.1.5 - 2019-05-15
-* Remove debug prints
-
-
-## 0.1.4 - 2019-05-15
-* Fix checked resource match
-
-
-## 0.1.3 - 2019-04-22
-* Added support for `remainder match` (i.e "/path/{tail}*")
-
-
-## 0.1.2 - 2019-04-07
-* Export `Quoter` type
-* Allow to reset `Path` instance
-
-
-## 0.1.1 - 2019-04-03
-* Get dynamic segment by name instead of iterator.
-
-
-## 0.1.0 - 2019-03-09
-* Initial release

actix-router/Cargo.toml

@@ -1,29 +0,0 @@
-[package]
-name = "actix-router"
-version = "0.2.7"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
-description = "Resource path matching library"
-keywords = ["actix", "router", "routing"]
-homepage = "https://actix.rs"
-repository = "https://github.com/actix/actix-net.git"
-documentation = "https://docs.rs/actix-router"
-license = "MIT OR Apache-2.0"
-edition = "2018"
-
-[lib]
-name = "actix_router"
-path = "src/lib.rs"
-
-[features]
-default = ["http"]
-
-[dependencies]
-regex = "1.3.1"
-serde = "1.0.104"
-bytestring = ">=0.1.5, <2"
-log = "0.4.8"
-http = { version = "0.2.2", optional = true }
-
-[dev-dependencies]
-http = "0.2.2"
-serde_derive = "1.0"

actix-router/LICENSE-APACHE

@@ -1 +0,0 @@
-../LICENSE-APACHE

actix-router/LICENSE-MIT

@@ -1 +0,0 @@
-../LICENSE-MIT

actix-router/src/de.rs

@@ -1,717 +0,0 @@
-use serde::de::{self, Deserializer, Error as DeError, Visitor};
-use serde::forward_to_deserialize_any;
-
-use crate::path::{Path, PathIter};
-use crate::ResourcePath;
-
-macro_rules! unsupported_type {
-    ($trait_fn:ident, $name:expr) => {
-        fn $trait_fn<V>(self, _: V) -> Result<V::Value, Self::Error>
-        where
-            V: Visitor<'de>,
-        {
-            Err(de::value::Error::custom(concat!(
-                "unsupported type: ",
-                $name
-            )))
-        }
-    };
-}
-
-macro_rules! parse_single_value {
-    ($trait_fn:ident, $visit_fn:ident, $tp:tt) => {
-        fn $trait_fn<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-        where
-            V: Visitor<'de>,
-        {
-            if self.path.len() != 1 {
-                Err(de::value::Error::custom(
-                    format!("wrong number of parameters: {} expected 1", self.path.len())
-                        .as_str(),
-                ))
-            } else {
-                let v = self.path[0].parse().map_err(|_| {
-                    de::value::Error::custom(format!(
-                        "can not parse {:?} to a {}",
-                        &self.path[0], $tp
-                    ))
-                })?;
-                visitor.$visit_fn(v)
-            }
-        }
-    };
-}
-
-pub struct PathDeserializer<'de, T: ResourcePath> {
-    path: &'de Path<T>,
-}
-
-impl<'de, T: ResourcePath + 'de> PathDeserializer<'de, T> {
-    pub fn new(path: &'de Path<T>) -> Self {
-        PathDeserializer { path }
-    }
-}
-
-impl<'de, T: ResourcePath + 'de> Deserializer<'de> for PathDeserializer<'de, T> {
-    type Error = de::value::Error;
-
-    fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_map(ParamsDeserializer {
-            params: self.path.iter(),
-            current: None,
-        })
-    }
-
-    fn deserialize_struct<V>(
-        self,
-        _: &'static str,
-        _: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        self.deserialize_map(visitor)
-    }
-
-    fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_unit()
-    }
-
-    fn deserialize_unit_struct<V>(
-        self,
-        _: &'static str,
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        self.deserialize_unit(visitor)
-    }
-
-    fn deserialize_newtype_struct<V>(
-        self,
-        _: &'static str,
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_newtype_struct(self)
-    }
-
-    fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        if self.path.len() < len {
-            Err(de::value::Error::custom(
-                format!(
-                    "wrong number of parameters: {} expected {}",
-                    self.path.len(),
-                    len
-                )
-                .as_str(),
-            ))
-        } else {
-            visitor.visit_seq(ParamsSeq {
-                params: self.path.iter(),
-            })
-        }
-    }
-
-    fn deserialize_tuple_struct<V>(
-        self,
-        _: &'static str,
-        len: usize,
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        if self.path.len() < len {
-            Err(de::value::Error::custom(
-                format!(
-                    "wrong number of parameters: {} expected {}",
-                    self.path.len(),
-                    len
-                )
-                .as_str(),
-            ))
-        } else {
-            visitor.visit_seq(ParamsSeq {
-                params: self.path.iter(),
-            })
-        }
-    }
-
-    fn deserialize_enum<V>(
-        self,
-        _: &'static str,
-        _: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        if self.path.is_empty() {
-            Err(de::value::Error::custom("expected at least one parameters"))
-        } else {
-            visitor.visit_enum(ValueEnum {
-                value: &self.path[0],
-            })
-        }
-    }
-
-    fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        if self.path.len() != 1 {
-            Err(de::value::Error::custom(
-                format!("wrong number of parameters: {} expected 1", self.path.len()).as_str(),
-            ))
-        } else {
-            visitor.visit_str(&self.path[0])
-        }
-    }
-
-    fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_seq(ParamsSeq {
-            params: self.path.iter(),
-        })
-    }
-
-    unsupported_type!(deserialize_any, "'any'");
-    unsupported_type!(deserialize_bytes, "bytes");
-    unsupported_type!(deserialize_option, "Option<T>");
-    unsupported_type!(deserialize_identifier, "identifier");
-    unsupported_type!(deserialize_ignored_any, "ignored_any");
-
-    parse_single_value!(deserialize_bool, visit_bool, "bool");
-    parse_single_value!(deserialize_i8, visit_i8, "i8");
-    parse_single_value!(deserialize_i16, visit_i16, "i16");
-    parse_single_value!(deserialize_i32, visit_i32, "i32");
-    parse_single_value!(deserialize_i64, visit_i64, "i64");
-    parse_single_value!(deserialize_u8, visit_u8, "u8");
-    parse_single_value!(deserialize_u16, visit_u16, "u16");
-    parse_single_value!(deserialize_u32, visit_u32, "u32");
-    parse_single_value!(deserialize_u64, visit_u64, "u64");
-    parse_single_value!(deserialize_f32, visit_f32, "f32");
-    parse_single_value!(deserialize_f64, visit_f64, "f64");
-    parse_single_value!(deserialize_string, visit_string, "String");
-    parse_single_value!(deserialize_byte_buf, visit_string, "String");
-    parse_single_value!(deserialize_char, visit_char, "char");
-}
-
-struct ParamsDeserializer<'de, T: ResourcePath> {
-    params: PathIter<'de, T>,
-    current: Option<(&'de str, &'de str)>,
-}
-
-impl<'de, T: ResourcePath> de::MapAccess<'de> for ParamsDeserializer<'de, T> {
-    type Error = de::value::Error;
-
-    fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
-    where
-        K: de::DeserializeSeed<'de>,
-    {
-        self.current = self.params.next().map(|ref item| (item.0, item.1));
-        match self.current {
-            Some((key, _)) => Ok(Some(seed.deserialize(Key { key })?)),
-            None => Ok(None),
-        }
-    }
-
-    fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>
-    where
-        V: de::DeserializeSeed<'de>,
-    {
-        if let Some((_, value)) = self.current.take() {
-            seed.deserialize(Value { value })
-        } else {
-            Err(de::value::Error::custom("unexpected item"))
-        }
-    }
-}
-
-struct Key<'de> {
-    key: &'de str,
-}
-
-impl<'de> Deserializer<'de> for Key<'de> {
-    type Error = de::value::Error;
-
-    fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_str(self.key)
-    }
-
-    fn deserialize_any<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("Unexpected"))
-    }
-
-    forward_to_deserialize_any! {
-        bool i8 i16 i32 i64 u8 u16 u32 u64 f32 f64 char str string bytes
-            byte_buf option unit unit_struct newtype_struct seq tuple
-            tuple_struct map struct enum ignored_any
-    }
-}
-
-macro_rules! parse_value {
-    ($trait_fn:ident, $visit_fn:ident, $tp:tt) => {
-        fn $trait_fn<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-        where
-            V: Visitor<'de>,
-        {
-            let v = self.value.parse().map_err(|_| {
-                de::value::Error::custom(format!("can not parse {:?} to a {}", self.value, $tp))
-            })?;
-            visitor.$visit_fn(v)
-        }
-    };
-}
-
-struct Value<'de> {
-    value: &'de str,
-}
-
-impl<'de> Deserializer<'de> for Value<'de> {
-    type Error = de::value::Error;
-
-    parse_value!(deserialize_bool, visit_bool, "bool");
-    parse_value!(deserialize_i8, visit_i8, "i8");
-    parse_value!(deserialize_i16, visit_i16, "i16");
-    parse_value!(deserialize_i32, visit_i32, "i16");
-    parse_value!(deserialize_i64, visit_i64, "i64");
-    parse_value!(deserialize_u8, visit_u8, "u8");
-    parse_value!(deserialize_u16, visit_u16, "u16");
-    parse_value!(deserialize_u32, visit_u32, "u32");
-    parse_value!(deserialize_u64, visit_u64, "u64");
-    parse_value!(deserialize_f32, visit_f32, "f32");
-    parse_value!(deserialize_f64, visit_f64, "f64");
-    parse_value!(deserialize_string, visit_string, "String");
-    parse_value!(deserialize_byte_buf, visit_string, "String");
-    parse_value!(deserialize_char, visit_char, "char");
-
-    fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_unit()
-    }
-
-    fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_unit()
-    }
-
-    fn deserialize_unit_struct<V>(
-        self,
-        _: &'static str,
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_unit()
-    }
-
-    fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_borrowed_bytes(self.value.as_bytes())
-    }
-
-    fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_borrowed_str(self.value)
-    }
-
-    fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_some(self)
-    }
-
-    fn deserialize_enum<V>(
-        self,
-        _: &'static str,
-        _: &'static [&'static str],
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_enum(ValueEnum { value: self.value })
-    }
-
-    fn deserialize_newtype_struct<V>(
-        self,
-        _: &'static str,
-        visitor: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        visitor.visit_newtype_struct(self)
-    }
-
-    fn deserialize_tuple<V>(self, _: usize, _: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("unsupported type: tuple"))
-    }
-
-    fn deserialize_struct<V>(
-        self,
-        _: &'static str,
-        _: &'static [&'static str],
-        _: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("unsupported type: struct"))
-    }
-
-    fn deserialize_tuple_struct<V>(
-        self,
-        _: &'static str,
-        _: usize,
-        _: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("unsupported type: tuple struct"))
-    }
-
-    unsupported_type!(deserialize_any, "any");
-    unsupported_type!(deserialize_seq, "seq");
-    unsupported_type!(deserialize_map, "map");
-    unsupported_type!(deserialize_identifier, "identifier");
-}
-
-struct ParamsSeq<'de, T: ResourcePath> {
-    params: PathIter<'de, T>,
-}
-
-impl<'de, T: ResourcePath> de::SeqAccess<'de> for ParamsSeq<'de, T> {
-    type Error = de::value::Error;
-
-    fn next_element_seed<U>(&mut self, seed: U) -> Result<Option<U::Value>, Self::Error>
-    where
-        U: de::DeserializeSeed<'de>,
-    {
-        match self.params.next() {
-            Some(item) => Ok(Some(seed.deserialize(Value { value: item.1 })?)),
-            None => Ok(None),
-        }
-    }
-}
-
-struct ValueEnum<'de> {
-    value: &'de str,
-}
-
-impl<'de> de::EnumAccess<'de> for ValueEnum<'de> {
-    type Error = de::value::Error;
-    type Variant = UnitVariant;
-
-    fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
-    where
-        V: de::DeserializeSeed<'de>,
-    {
-        Ok((seed.deserialize(Key { key: self.value })?, UnitVariant))
-    }
-}
-
-struct UnitVariant;
-
-impl<'de> de::VariantAccess<'de> for UnitVariant {
-    type Error = de::value::Error;
-
-    fn unit_variant(self) -> Result<(), Self::Error> {
-        Ok(())
-    }
-
-    fn newtype_variant_seed<T>(self, _seed: T) -> Result<T::Value, Self::Error>
-    where
-        T: de::DeserializeSeed<'de>,
-    {
-        Err(de::value::Error::custom("not supported"))
-    }
-
-    fn tuple_variant<V>(self, _len: usize, _visitor: V) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("not supported"))
-    }
-
-    fn struct_variant<V>(
-        self,
-        _: &'static [&'static str],
-        _: V,
-    ) -> Result<V::Value, Self::Error>
-    where
-        V: Visitor<'de>,
-    {
-        Err(de::value::Error::custom("not supported"))
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use serde::de;
-    use serde_derive::Deserialize;
-
-    use super::*;
-    use crate::path::Path;
-    use crate::router::Router;
-
-    #[derive(Deserialize)]
-    struct MyStruct {
-        key: String,
-        value: String,
-    }
-
-    #[derive(Deserialize)]
-    struct Id {
-        _id: String,
-    }
-
-    #[derive(Debug, Deserialize)]
-    struct Test1(String, u32);
-
-    #[derive(Debug, Deserialize)]
-    struct Test2 {
-        key: String,
-        value: u32,
-    }
-
-    #[derive(Debug, Deserialize, PartialEq)]
-    #[serde(rename_all = "lowercase")]
-    enum TestEnum {
-        Val1,
-        Val2,
-    }
-
-    #[derive(Debug, Deserialize)]
-    struct Test3 {
-        val: TestEnum,
-    }
-
-    #[test]
-    fn test_request_extract() {
-        let mut router = Router::<()>::build();
-        router.path("/{key}/{value}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/name/user1/");
-        assert!(router.recognize(&mut path).is_some());
-
-        let s: MyStruct = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(s.key, "name");
-        assert_eq!(s.value, "user1");
-
-        let s: (String, String) =
-            de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(s.0, "name");
-        assert_eq!(s.1, "user1");
-
-        let mut router = Router::<()>::build();
-        router.path("/{key}/{value}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/name/32/");
-        assert!(router.recognize(&mut path).is_some());
-
-        let s: Test1 = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(s.0, "name");
-        assert_eq!(s.1, 32);
-
-        let s: Test2 = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(s.key, "name");
-        assert_eq!(s.value, 32);
-
-        let s: (String, u8) =
-            de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(s.0, "name");
-        assert_eq!(s.1, 32);
-
-        let res: Vec<String> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(res[0], "name".to_owned());
-        assert_eq!(res[1], "32".to_owned());
-    }
-
-    #[test]
-    fn test_extract_path_single() {
-        let mut router = Router::<()>::build();
-        router.path("/{value}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/32/");
-        assert!(router.recognize(&mut path).is_some());
-        let i: i8 = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(i, 32);
-    }
-
-    #[test]
-    fn test_extract_enum() {
-        let mut router = Router::<()>::build();
-        router.path("/{val}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/val1/");
-        assert!(router.recognize(&mut path).is_some());
-        let i: TestEnum = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(i, TestEnum::Val1);
-
-        let mut router = Router::<()>::build();
-        router.path("/{val1}/{val2}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/val1/val2/");
-        assert!(router.recognize(&mut path).is_some());
-        let i: (TestEnum, TestEnum) =
-            de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(i, (TestEnum::Val1, TestEnum::Val2));
-    }
-
-    #[test]
-    fn test_extract_enum_value() {
-        let mut router = Router::<()>::build();
-        router.path("/{val}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/val1/");
-        assert!(router.recognize(&mut path).is_some());
-        let i: Test3 = de::Deserialize::deserialize(PathDeserializer::new(&path)).unwrap();
-        assert_eq!(i.val, TestEnum::Val1);
-
-        let mut path = Path::new("/val3/");
-        assert!(router.recognize(&mut path).is_some());
-        let i: Result<Test3, de::value::Error> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path));
-        assert!(i.is_err());
-        assert!(format!("{:?}", i).contains("unknown variant"));
-    }
-
-    #[test]
-    fn test_extract_errors() {
-        let mut router = Router::<()>::build();
-        router.path("/{value}/", ());
-        let router = router.finish();
-
-        let mut path = Path::new("/name/");
-        assert!(router.recognize(&mut path).is_some());
-
-        let s: Result<Test1, de::value::Error> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path));
-        assert!(s.is_err());
-        assert!(format!("{:?}", s).contains("wrong number of parameters"));
-
-        let s: Result<Test2, de::value::Error> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path));
-        assert!(s.is_err());
-        assert!(format!("{:?}", s).contains("can not parse"));
-
-        let s: Result<(String, String), de::value::Error> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path));
-        assert!(s.is_err());
-        assert!(format!("{:?}", s).contains("wrong number of parameters"));
-
-        let s: Result<u32, de::value::Error> =
-            de::Deserialize::deserialize(PathDeserializer::new(&path));
-        assert!(s.is_err());
-        assert!(format!("{:?}", s).contains("can not parse"));
-    }
-
-    // #[test]
-    // fn test_extract_path_decode() {
-    //     let mut router = Router::<()>::default();
-    //     router.register_resource(Resource::new(ResourceDef::new("/{value}/")));
-
-    //     macro_rules! test_single_value {
-    //         ($value:expr, $expected:expr) => {{
-    //             let req = TestRequest::with_uri($value).finish();
-    //             let info = router.recognize(&req, &(), 0);
-    //             let req = req.with_route_info(info);
-    //             assert_eq!(
-    //                 *Path::<String>::from_request(&req, &PathConfig::default()).unwrap(),
-    //                 $expected
-    //             );
-    //         }};
-    //     }
-
-    //     test_single_value!("/%25/", "%");
-    //     test_single_value!("/%40%C2%A3%24%25%5E%26%2B%3D/", "@£$%^&+=");
-    //     test_single_value!("/%2B/", "+");
-    //     test_single_value!("/%252B/", "%2B");
-    //     test_single_value!("/%2F/", "/");
-    //     test_single_value!("/%252F/", "%2F");
-    //     test_single_value!(
-    //         "/http%3A%2F%2Flocalhost%3A80%2Ffoo/",
-    //         "http://localhost:80/foo"
-    //     );
-    //     test_single_value!("/%2Fvar%2Flog%2Fsyslog/", "/var/log/syslog");
-    //     test_single_value!(
-    //         "/http%3A%2F%2Flocalhost%3A80%2Ffile%2F%252Fvar%252Flog%252Fsyslog/",
-    //         "http://localhost:80/file/%2Fvar%2Flog%2Fsyslog"
-    //     );
-
-    //     let req = TestRequest::with_uri("/%25/7/?id=test").finish();
-
-    //     let mut router = Router::<()>::default();
-    //     router.register_resource(Resource::new(ResourceDef::new("/{key}/{value}/")));
-    //     let info = router.recognize(&req, &(), 0);
-    //     let req = req.with_route_info(info);
-
-    //     let s = Path::<Test2>::from_request(&req, &PathConfig::default()).unwrap();
-    //     assert_eq!(s.key, "%");
-    //     assert_eq!(s.value, 7);
-
-    //     let s = Path::<(String, String)>::from_request(&req, &PathConfig::default()).unwrap();
-    //     assert_eq!(s.0, "%");
-    //     assert_eq!(s.1, "7");
-    // }
-
-    // #[test]
-    // fn test_extract_path_no_decode() {
-    //     let mut router = Router::<()>::default();
-    //     router.register_resource(Resource::new(ResourceDef::new("/{value}/")));
-
-    //     let req = TestRequest::with_uri("/%25/").finish();
-    //     let info = router.recognize(&req, &(), 0);
-    //     let req = req.with_route_info(info);
-    //     assert_eq!(
-    //         *Path::<String>::from_request(&req, &&PathConfig::default().disable_decoding())
-    //             .unwrap(),
-    //         "%25"
-    //     );
-    // }
-}

actix-router/src/lib.rs

@@ -1,152 +0,0 @@
-//! Resource path matching library.
-
-#![deny(rust_2018_idioms, nonstandard_style)]
-#![doc(html_logo_url = "https://actix.rs/img/logo.png")]
-#![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
-
-mod de;
-mod path;
-mod resource;
-mod router;
-
-pub use self::de::PathDeserializer;
-pub use self::path::Path;
-pub use self::resource::ResourceDef;
-pub use self::router::{ResourceInfo, Router, RouterBuilder};
-
-pub trait Resource<T: ResourcePath> {
-    fn resource_path(&mut self) -> &mut Path<T>;
-}
-
-pub trait ResourcePath {
-    fn path(&self) -> &str;
-}
-
-impl ResourcePath for String {
-    fn path(&self) -> &str {
-        self.as_str()
-    }
-}
-
-impl<'a> ResourcePath for &'a str {
-    fn path(&self) -> &str {
-        self
-    }
-}
-
-impl ResourcePath for bytestring::ByteString {
-    fn path(&self) -> &str {
-        &*self
-    }
-}
-
-/// Helper trait for type that could be converted to path pattern
-pub trait IntoPattern {
-    fn is_single(&self) -> bool;
-
-    fn patterns(&self) -> Vec<String>;
-}
-
-impl IntoPattern for String {
-    fn is_single(&self) -> bool {
-        true
-    }
-
-    fn patterns(&self) -> Vec<String> {
-        vec![self.clone()]
-    }
-}
-
-impl<'a> IntoPattern for &'a String {
-    fn is_single(&self) -> bool {
-        true
-    }
-
-    fn patterns(&self) -> Vec<String> {
-        vec![self.as_str().to_string()]
-    }
-}
-
-impl<'a> IntoPattern for &'a str {
-    fn is_single(&self) -> bool {
-        true
-    }
-
-    fn patterns(&self) -> Vec<String> {
-        vec![(*self).to_string()]
-    }
-}
-
-impl<T: AsRef<str>> IntoPattern for Vec<T> {
-    fn is_single(&self) -> bool {
-        self.len() == 1
-    }
-
-    fn patterns(&self) -> Vec<String> {
-        self.iter().map(|v| v.as_ref().to_string()).collect()
-    }
-}
-
-macro_rules! array_patterns (($tp:ty, $num:tt) => {
-    impl IntoPattern for [$tp; $num] {
-        fn is_single(&self) -> bool {
-            $num == 1
-        }
-
-        fn patterns(&self) -> Vec<String> {
-            self.iter().map(|v| v.to_string()).collect()
-        }
-    }
-});
-
-array_patterns!(&str, 1);
-array_patterns!(&str, 2);
-array_patterns!(&str, 3);
-array_patterns!(&str, 4);
-array_patterns!(&str, 5);
-array_patterns!(&str, 6);
-array_patterns!(&str, 7);
-array_patterns!(&str, 8);
-array_patterns!(&str, 9);
-array_patterns!(&str, 10);
-array_patterns!(&str, 11);
-array_patterns!(&str, 12);
-array_patterns!(&str, 13);
-array_patterns!(&str, 14);
-array_patterns!(&str, 15);
-array_patterns!(&str, 16);
-
-array_patterns!(String, 1);
-array_patterns!(String, 2);
-array_patterns!(String, 3);
-array_patterns!(String, 4);
-array_patterns!(String, 5);
-array_patterns!(String, 6);
-array_patterns!(String, 7);
-array_patterns!(String, 8);
-array_patterns!(String, 9);
-array_patterns!(String, 10);
-array_patterns!(String, 11);
-array_patterns!(String, 12);
-array_patterns!(String, 13);
-array_patterns!(String, 14);
-array_patterns!(String, 15);
-array_patterns!(String, 16);
-
-#[cfg(feature = "http")]
-mod url;
-
-#[cfg(feature = "http")]
-pub use self::url::{Quoter, Url};
-
-#[cfg(feature = "http")]
-mod http_support {
-    use super::ResourcePath;
-    use http::Uri;
-
-    impl ResourcePath for Uri {
-        fn path(&self) -> &str {
-            self.path()
-        }
-    }
-}

actix-router/src/path.rs

@@ -1,222 +0,0 @@
-use std::ops::Index;
-
-use serde::de;
-
-use crate::de::PathDeserializer;
-use crate::{Resource, ResourcePath};
-
-#[derive(Debug, Clone, Copy)]
-pub(crate) enum PathItem {
-    Static(&'static str),
-    Segment(u16, u16),
-}
-
-/// Resource path match information
-///
-/// If resource path contains variable patterns, `Path` stores them.
-#[derive(Debug)]
-pub struct Path<T> {
-    path: T,
-    pub(crate) skip: u16,
-    pub(crate) segments: Vec<(&'static str, PathItem)>,
-}
-
-impl<T: Default> Default for Path<T> {
-    fn default() -> Self {
-        Path {
-            path: T::default(),
-            skip: 0,
-            segments: Vec::new(),
-        }
-    }
-}
-
-impl<T: Clone> Clone for Path<T> {
-    fn clone(&self) -> Self {
-        Path {
-            path: self.path.clone(),
-            skip: self.skip,
-            segments: self.segments.clone(),
-        }
-    }
-}
-
-impl<T: ResourcePath> Path<T> {
-    pub fn new(path: T) -> Path<T> {
-        Path {
-            path,
-            skip: 0,
-            segments: Vec::new(),
-        }
-    }
-
-    /// Get reference to inner path instance
-    #[inline]
-    pub fn get_ref(&self) -> &T {
-        &self.path
-    }
-
-    /// Get mutable reference to inner path instance
-    #[inline]
-    pub fn get_mut(&mut self) -> &mut T {
-        &mut self.path
-    }
-
-    /// Path
-    #[inline]
-    pub fn path(&self) -> &str {
-        let skip = self.skip as usize;
-        let path = self.path.path();
-        if skip <= path.len() {
-            &path[skip..]
-        } else {
-            ""
-        }
-    }
-
-    /// Set new path
-    #[inline]
-    pub fn set(&mut self, path: T) {
-        self.skip = 0;
-        self.path = path;
-        self.segments.clear();
-    }
-
-    /// Reset state
-    #[inline]
-    pub fn reset(&mut self) {
-        self.skip = 0;
-        self.segments.clear();
-    }
-
-    /// Skip first `n` chars in path
-    #[inline]
-    pub fn skip(&mut self, n: u16) {
-        self.skip += n;
-    }
-
-    pub(crate) fn add(&mut self, name: &'static str, value: PathItem) {
-        match value {
-            PathItem::Static(s) => self.segments.push((name, PathItem::Static(s))),
-            PathItem::Segment(begin, end) => self
-                .segments
-                .push((name, PathItem::Segment(self.skip + begin, self.skip + end))),
-        }
-    }
-
-    #[doc(hidden)]
-    pub fn add_static(&mut self, name: &'static str, value: &'static str) {
-        self.segments.push((name, PathItem::Static(value)));
-    }
-
-    /// Check if there are any matched patterns
-    #[inline]
-    pub fn is_empty(&self) -> bool {
-        self.segments.is_empty()
-    }
-
-    /// Check number of extracted parameters
-    #[inline]
-    pub fn len(&self) -> usize {
-        self.segments.len()
-    }
-
-    /// Get matched parameter by name without type conversion
-    pub fn get(&self, key: &str) -> Option<&str> {
-        for item in self.segments.iter() {
-            if key == item.0 {
-                return match item.1 {
-                    PathItem::Static(ref s) => Some(&s),
-                    PathItem::Segment(s, e) => {
-                        Some(&self.path.path()[(s as usize)..(e as usize)])
-                    }
-                };
-            }
-        }
-        if key == "tail" {
-            Some(&self.path.path()[(self.skip as usize)..])
-        } else {
-            None
-        }
-    }
-
-    /// Get unprocessed part of the path
-    pub fn unprocessed(&self) -> &str {
-        &self.path.path()[(self.skip as usize)..]
-    }
-
-    /// Get matched parameter by name.
-    ///
-    /// If keyed parameter is not available empty string is used as default
-    /// value.
-    pub fn query(&self, key: &str) -> &str {
-        if let Some(s) = self.get(key) {
-            s
-        } else {
-            ""
-        }
-    }
-
-    /// Return iterator to items in parameter container
-    pub fn iter(&self) -> PathIter<'_, T> {
-        PathIter {
-            idx: 0,
-            params: self,
-        }
-    }
-
-    /// Try to deserialize matching parameters to a specified type `U`
-    pub fn load<'de, U: serde::Deserialize<'de>>(&'de self) -> Result<U, de::value::Error> {
-        de::Deserialize::deserialize(PathDeserializer::new(self))
-    }
-}
-
-#[derive(Debug)]
-pub struct PathIter<'a, T> {
-    idx: usize,
-    params: &'a Path<T>,
-}
-
-impl<'a, T: ResourcePath> Iterator for PathIter<'a, T> {
-    type Item = (&'a str, &'a str);
-
-    #[inline]
-    fn next(&mut self) -> Option<(&'a str, &'a str)> {
-        if self.idx < self.params.len() {
-            let idx = self.idx;
-            let res = match self.params.segments[idx].1 {
-                PathItem::Static(ref s) => &s,
-                PathItem::Segment(s, e) => &self.params.path.path()[(s as usize)..(e as usize)],
-            };
-            self.idx += 1;
-            return Some((&self.params.segments[idx].0, res));
-        }
-        None
-    }
-}
-
-impl<'a, T: ResourcePath> Index<&'a str> for Path<T> {
-    type Output = str;
-
-    fn index(&self, name: &'a str) -> &str {
-        self.get(name)
-            .expect("Value for parameter is not available")
-    }
-}
-
-impl<T: ResourcePath> Index<usize> for Path<T> {
-    type Output = str;
-
-    fn index(&self, idx: usize) -> &str {
-        match self.segments[idx].1 {
-            PathItem::Static(ref s) => &s,
-            PathItem::Segment(s, e) => &self.path.path()[(s as usize)..(e as usize)],
-        }
-    }
-}
-
-impl<T: ResourcePath> Resource<T> for Path<T> {
-    fn resource_path(&mut self) -> &mut Self {
-        self
-    }
-}

actix-router/src/resource.rs

@@ -1,948 +0,0 @@
-use std::cmp::min;
-use std::collections::HashMap;
-use std::hash::{Hash, Hasher};
-
-use regex::{escape, Regex, RegexSet};
-
-use crate::path::{Path, PathItem};
-use crate::{IntoPattern, Resource, ResourcePath};
-
-const MAX_DYNAMIC_SEGMENTS: usize = 16;
-
-/// ResourceDef describes an entry in resources table
-///
-/// Resource definition can contain only 16 dynamic segments
-#[derive(Clone, Debug)]
-pub struct ResourceDef {
-    id: u16,
-    tp: PatternType,
-    name: String,
-    pattern: String,
-    elements: Vec<PatternElement>,
-}
-
-#[derive(Debug, Clone, PartialEq)]
-enum PatternElement {
-    Str(String),
-    Var(String),
-}
-
-#[derive(Clone, Debug)]
-#[allow(clippy::large_enum_variant)]
-enum PatternType {
-    Static(String),
-    Prefix(String),
-    Dynamic(Regex, Vec<&'static str>, usize),
-    DynamicSet(RegexSet, Vec<(Regex, Vec<&'static str>, usize)>),
-}
-
-impl ResourceDef {
-    /// Parse path pattern and create new `Pattern` instance.
-    ///
-    /// Panics if path pattern is malformed.
-    pub fn new<T: IntoPattern>(path: T) -> Self {
-        if path.is_single() {
-            let patterns = path.patterns();
-            ResourceDef::with_prefix(&patterns[0], false)
-        } else {
-            let set = path.patterns();
-            let mut data = Vec::new();
-            let mut re_set = Vec::new();
-
-            for path in set {
-                let (pattern, _, _, len) = ResourceDef::parse(&path, false);
-
-                let re = match Regex::new(&pattern) {
-                    Ok(re) => re,
-                    Err(err) => panic!("Wrong path pattern: \"{}\" {}", path, err),
-                };
-                // actix creates one router per thread
-                let names: Vec<_> = re
-                    .capture_names()
-                    .filter_map(|name| {
-                        name.map(|name| Box::leak(Box::new(name.to_owned())).as_str())
-                    })
-                    .collect();
-                data.push((re, names, len));
-                re_set.push(pattern);
-            }
-
-            ResourceDef {
-                id: 0,
-                tp: PatternType::DynamicSet(RegexSet::new(re_set).unwrap(), data),
-                elements: Vec::new(),
-                name: String::new(),
-                pattern: "".to_owned(),
-            }
-        }
-    }
-
-    /// Parse path pattern and create new `Pattern` instance.
-    ///
-    /// Use `prefix` type instead of `static`.
-    ///
-    /// Panics if path regex pattern is malformed.
-    pub fn prefix(path: &str) -> Self {
-        ResourceDef::with_prefix(path, true)
-    }
-
-    /// Parse path pattern and create new `Pattern` instance.
-    /// Inserts `/` to begging of the pattern.
-    ///
-    ///
-    /// Use `prefix` type instead of `static`.
-    ///
-    /// Panics if path regex pattern is malformed.
-    pub fn root_prefix(path: &str) -> Self {
-        ResourceDef::with_prefix(&insert_slash(path), true)
-    }
-
-    /// Resource id
-    pub fn id(&self) -> u16 {
-        self.id
-    }
-
-    /// Set resource id
-    pub fn set_id(&mut self, id: u16) {
-        self.id = id;
-    }
-
-    /// Parse path pattern and create new `Pattern` instance with custom prefix
-    fn with_prefix(path: &str, for_prefix: bool) -> Self {
-        let path = path.to_owned();
-        let (pattern, elements, is_dynamic, len) = ResourceDef::parse(&path, for_prefix);
-
-        let tp = if is_dynamic {
-            let re = match Regex::new(&pattern) {
-                Ok(re) => re,
-                Err(err) => panic!("Wrong path pattern: \"{}\" {}", path, err),
-            };
-            // actix creates one router per thread
-            let names = re
-                .capture_names()
-                .filter_map(|name| {
-                    name.map(|name| Box::leak(Box::new(name.to_owned())).as_str())
-                })
-                .collect();
-            PatternType::Dynamic(re, names, len)
-        } else if for_prefix {
-            PatternType::Prefix(pattern)
-        } else {
-            PatternType::Static(pattern)
-        };
-
-        ResourceDef {
-            tp,
-            elements,
-            id: 0,
-            name: String::new(),
-            pattern: path,
-        }
-    }
-
-    /// Resource pattern name
-    pub fn name(&self) -> &str {
-        &self.name
-    }
-
-    /// Mutable reference to a name of a resource definition.
-    pub fn name_mut(&mut self) -> &mut String {
-        &mut self.name
-    }
-
-    /// Path pattern of the resource
-    pub fn pattern(&self) -> &str {
-        &self.pattern
-    }
-
-    /// Check if path matches this pattern.
-    #[inline]
-    pub fn is_match(&self, path: &str) -> bool {
-        match self.tp {
-            PatternType::Static(ref s) => s == path,
-            PatternType::Prefix(ref s) => path.starts_with(s),
-            PatternType::Dynamic(ref re, _, _) => re.is_match(path),
-            PatternType::DynamicSet(ref re, _) => re.is_match(path),
-        }
-    }
-
-    /// Is prefix path a match against this resource.
-    pub fn is_prefix_match(&self, path: &str) -> Option<usize> {
-        let p_len = path.len();
-        let path = if path.is_empty() { "/" } else { path };
-
-        match self.tp {
-            PatternType::Static(ref s) => {
-                if s == path {
-                    Some(p_len)
-                } else {
-                    None
-                }
-            }
-            PatternType::Dynamic(ref re, _, len) => {
-                if let Some(captures) = re.captures(path) {
-                    let mut pos = 0;
-                    let mut passed = false;
-                    for capture in captures.iter() {
-                        if let Some(ref m) = capture {
-                            if !passed {
-                                passed = true;
-                                continue;
-                            }
-
-                            pos = m.end();
-                        }
-                    }
-                    Some(pos + len)
-                } else {
-                    None
-                }
-            }
-            PatternType::Prefix(ref s) => {
-                let len = if path == s {
-                    s.len()
-                } else if path.starts_with(s)
-                    && (s.ends_with('/') || path.split_at(s.len()).1.starts_with('/'))
-                {
-                    if s.ends_with('/') {
-                        s.len() - 1
-                    } else {
-                        s.len()
-                    }
-                } else {
-                    return None;
-                };
-                Some(min(p_len, len))
-            }
-            PatternType::DynamicSet(ref re, ref params) => {
-                if let Some(idx) = re.matches(path).into_iter().next() {
-                    let (ref pattern, _, len) = params[idx];
-                    if let Some(captures) = pattern.captures(path) {
-                        let mut pos = 0;
-                        let mut passed = false;
-                        for capture in captures.iter() {
-                            if let Some(ref m) = capture {
-                                if !passed {
-                                    passed = true;
-                                    continue;
-                                }
-
-                                pos = m.end();
-                            }
-                        }
-                        Some(pos + len)
-                    } else {
-                        None
-                    }
-                } else {
-                    None
-                }
-            }
-        }
-    }
-
-    /// Is the given path and parameters a match against this pattern.
-    pub fn match_path<T: ResourcePath>(&self, path: &mut Path<T>) -> bool {
-        match self.tp {
-            PatternType::Static(ref s) => {
-                if s == path.path() {
-                    path.skip(path.len() as u16);
-                    true
-                } else {
-                    false
-                }
-            }
-            PatternType::Prefix(ref s) => {
-                let r_path = path.path();
-                let len = if s == r_path {
-                    s.len()
-                } else if r_path.starts_with(s)
-                    && (s.ends_with('/') || r_path.split_at(s.len()).1.starts_with('/'))
-                {
-                    if s.ends_with('/') {
-                        s.len() - 1
-                    } else {
-                        s.len()
-                    }
-                } else {
-                    return false;
-                };
-                let r_path_len = r_path.len();
-                path.skip(min(r_path_len, len) as u16);
-                true
-            }
-            PatternType::Dynamic(ref re, ref names, len) => {
-                let mut idx = 0;
-                let mut pos = 0;
-                let mut segments: [PathItem; MAX_DYNAMIC_SEGMENTS] =
-                    [PathItem::Static(""); MAX_DYNAMIC_SEGMENTS];
-
-                if let Some(captures) = re.captures(path.path()) {
-                    for (no, name) in names.iter().enumerate() {
-                        if let Some(m) = captures.name(&name) {
-                            idx += 1;
-                            pos = m.end();
-                            segments[no] = PathItem::Segment(m.start() as u16, m.end() as u16);
-                        } else {
-                            log::error!(
-                                "Dynamic path match but not all segments found: {}",
-                                name
-                            );
-                            return false;
-                        }
-                    }
-                } else {
-                    return false;
-                }
-                for idx in 0..idx {
-                    path.add(names[idx], segments[idx]);
-                }
-                path.skip((pos + len) as u16);
-                true
-            }
-            PatternType::DynamicSet(ref re, ref params) => {
-                if let Some(idx) = re.matches(path.path()).into_iter().next() {
-                    let (ref pattern, ref names, len) = params[idx];
-                    let mut idx = 0;
-                    let mut pos = 0;
-                    let mut segments: [PathItem; MAX_DYNAMIC_SEGMENTS] =
-                        [PathItem::Static(""); MAX_DYNAMIC_SEGMENTS];
-
-                    if let Some(captures) = pattern.captures(path.path()) {
-                        for (no, name) in names.iter().enumerate() {
-                            if let Some(m) = captures.name(&name) {
-                                idx += 1;
-                                pos = m.end();
-                                segments[no] =
-                                    PathItem::Segment(m.start() as u16, m.end() as u16);
-                            } else {
-                                log::error!(
-                                    "Dynamic path match but not all segments found: {}",
-                                    name
-                                );
-                                return false;
-                            }
-                        }
-                    } else {
-                        return false;
-                    }
-                    for idx in 0..idx {
-                        path.add(names[idx], segments[idx]);
-                    }
-                    path.skip((pos + len) as u16);
-                    true
-                } else {
-                    false
-                }
-            }
-        }
-    }
-
-    /// Is the given path and parameters a match against this pattern?
-    pub fn match_path_checked<R, T, F, U>(
-        &self,
-        res: &mut R,
-        check: &F,
-        user_data: &Option<U>,
-    ) -> bool
-    where
-        T: ResourcePath,
-        R: Resource<T>,
-        F: Fn(&R, &Option<U>) -> bool,
-    {
-        match self.tp {
-            PatternType::Static(ref s) => {
-                if s == res.resource_path().path() && check(res, user_data) {
-                    let path = res.resource_path();
-                    path.skip(path.len() as u16);
-                    true
-                } else {
-                    false
-                }
-            }
-            PatternType::Prefix(ref s) => {
-                let len = {
-                    let r_path = res.resource_path().path();
-                    if s == r_path {
-                        s.len()
-                    } else if r_path.starts_with(s)
-                        && (s.ends_with('/') || r_path.split_at(s.len()).1.starts_with('/'))
-                    {
-                        if s.ends_with('/') {
-                            s.len() - 1
-                        } else {
-                            s.len()
-                        }
-                    } else {
-                        return false;
-                    }
-                };
-                if !check(res, user_data) {
-                    return false;
-                }
-                let path = res.resource_path();
-                path.skip(min(path.path().len(), len) as u16);
-                true
-            }
-            PatternType::Dynamic(ref re, ref names, len) => {
-                let mut idx = 0;
-                let mut pos = 0;
-                let mut segments: [PathItem; MAX_DYNAMIC_SEGMENTS] =
-                    [PathItem::Static(""); MAX_DYNAMIC_SEGMENTS];
-
-                if let Some(captures) = re.captures(res.resource_path().path()) {
-                    for (no, name) in names.iter().enumerate() {
-                        if let Some(m) = captures.name(&name) {
-                            idx += 1;
-                            pos = m.end();
-                            segments[no] = PathItem::Segment(m.start() as u16, m.end() as u16);
-                        } else {
-                            log::error!(
-                                "Dynamic path match but not all segments found: {}",
-                                name
-                            );
-                            return false;
-                        }
-                    }
-                } else {
-                    return false;
-                }
-
-                if !check(res, user_data) {
-                    return false;
-                }
-
-                let path = res.resource_path();
-                for idx in 0..idx {
-                    path.add(names[idx], segments[idx]);
-                }
-                path.skip((pos + len) as u16);
-                true
-            }
-            PatternType::DynamicSet(ref re, ref params) => {
-                let path = res.resource_path().path();
-                if let Some(idx) = re.matches(path).into_iter().next() {
-                    let (ref pattern, ref names, len) = params[idx];
-                    let mut idx = 0;
-                    let mut pos = 0;
-                    let mut segments: [PathItem; MAX_DYNAMIC_SEGMENTS] =
-                        [PathItem::Static(""); MAX_DYNAMIC_SEGMENTS];
-
-                    if let Some(captures) = pattern.captures(path) {
-                        for (no, name) in names.iter().enumerate() {
-                            if let Some(m) = captures.name(&name) {
-                                idx += 1;
-                                pos = m.end();
-                                segments[no] =
-                                    PathItem::Segment(m.start() as u16, m.end() as u16);
-                            } else {
-                                log::error!(
-                                    "Dynamic path match but not all segments found: {}",
-                                    name
-                                );
-                                return false;
-                            }
-                        }
-                    } else {
-                        return false;
-                    }
-
-                    if !check(res, user_data) {
-                        return false;
-                    }
-
-                    let path = res.resource_path();
-                    for idx in 0..idx {
-                        path.add(names[idx], segments[idx]);
-                    }
-                    path.skip((pos + len) as u16);
-                    true
-                } else {
-                    false
-                }
-            }
-        }
-    }
-
-    /// Build resource path from elements. Returns `true` on success.
-    pub fn resource_path<U, I>(&self, path: &mut String, elements: &mut U) -> bool
-    where
-        U: Iterator<Item = I>,
-        I: AsRef<str>,
-    {
-        match self.tp {
-            PatternType::Prefix(ref p) => path.push_str(p),
-            PatternType::Static(ref p) => path.push_str(p),
-            PatternType::Dynamic(..) => {
-                for el in &self.elements {
-                    match *el {
-                        PatternElement::Str(ref s) => path.push_str(s),
-                        PatternElement::Var(_) => {
-                            if let Some(val) = elements.next() {
-                                path.push_str(val.as_ref())
-                            } else {
-                                return false;
-                            }
-                        }
-                    }
-                }
-            }
-            PatternType::DynamicSet(..) => {
-                return false;
-            }
-        }
-        true
-    }
-
-    /// Build resource path from elements. Returns `true` on success.
-    pub fn resource_path_named<K, V, S>(
-        &self,
-        path: &mut String,
-        elements: &HashMap<K, V, S>,
-    ) -> bool
-    where
-        K: std::borrow::Borrow<str> + Eq + Hash,
-        V: AsRef<str>,
-        S: std::hash::BuildHasher,
-    {
-        match self.tp {
-            PatternType::Prefix(ref p) => path.push_str(p),
-            PatternType::Static(ref p) => path.push_str(p),
-            PatternType::Dynamic(..) => {
-                for el in &self.elements {
-                    match *el {
-                        PatternElement::Str(ref s) => path.push_str(s),
-                        PatternElement::Var(ref name) => {
-                            if let Some(val) = elements.get(name) {
-                                path.push_str(val.as_ref())
-                            } else {
-                                return false;
-                            }
-                        }
-                    }
-                }
-            }
-            PatternType::DynamicSet(..) => {
-                return false;
-            }
-        }
-        true
-    }
-
-    fn parse_param(pattern: &str) -> (PatternElement, String, &str, bool) {
-        const DEFAULT_PATTERN: &str = "[^/]+";
-        const DEFAULT_PATTERN_TAIL: &str = ".*";
-        let mut params_nesting = 0usize;
-        let close_idx = pattern
-            .find(|c| match c {
-                '{' => {
-                    params_nesting += 1;
-                    false
-                }
-                '}' => {
-                    params_nesting -= 1;
-                    params_nesting == 0
-                }
-                _ => false,
-            })
-            .expect("malformed dynamic segment");
-        let (mut param, mut rem) = pattern.split_at(close_idx + 1);
-        param = &param[1..param.len() - 1]; // Remove outer brackets
-        let tail = rem == "*";
-
-        let (name, pattern) = match param.find(':') {
-            Some(idx) => {
-                if tail {
-                    panic!("Custom regex is not supported for remainder match");
-                }
-                let (name, pattern) = param.split_at(idx);
-                (name, &pattern[1..])
-            }
-            None => (
-                param,
-                if tail {
-                    rem = &rem[1..];
-                    DEFAULT_PATTERN_TAIL
-                } else {
-                    DEFAULT_PATTERN
-                },
-            ),
-        };
-        (
-            PatternElement::Var(name.to_string()),
-            format!(r"(?P<{}>{})", &name, &pattern),
-            rem,
-            tail,
-        )
-    }
-
-    fn parse(
-        mut pattern: &str,
-        mut for_prefix: bool,
-    ) -> (String, Vec<PatternElement>, bool, usize) {
-        if pattern.find('{').is_none() {
-            // TODO: MSRV: 1.45
-            #[allow(clippy::manual_strip)]
-            return if pattern.ends_with('*') {
-                let path = &pattern[..pattern.len() - 1];
-                let re = String::from("^") + path + "(.*)";
-                (re, vec![PatternElement::Str(String::from(path))], true, 0)
-            } else {
-                (
-                    String::from(pattern),
-                    vec![PatternElement::Str(String::from(pattern))],
-                    false,
-                    pattern.chars().count(),
-                )
-            };
-        }
-
-        let mut elements = Vec::new();
-        let mut re = String::from("^");
-        let mut dyn_elements = 0;
-
-        while let Some(idx) = pattern.find('{') {
-            let (prefix, rem) = pattern.split_at(idx);
-            elements.push(PatternElement::Str(String::from(prefix)));
-            re.push_str(&escape(prefix));
-            let (param_pattern, re_part, rem, tail) = Self::parse_param(rem);
-            if tail {
-                for_prefix = true;
-            }
-
-            elements.push(param_pattern);
-            re.push_str(&re_part);
-            pattern = rem;
-            dyn_elements += 1;
-        }
-
-        elements.push(PatternElement::Str(String::from(pattern)));
-        re.push_str(&escape(pattern));
-
-        if dyn_elements > MAX_DYNAMIC_SEGMENTS {
-            panic!(
-                "Only {} dynamic segments are allowed, provided: {}",
-                MAX_DYNAMIC_SEGMENTS, dyn_elements
-            );
-        }
-
-        if !for_prefix {
-            re.push('$');
-        }
-        (re, elements, true, pattern.chars().count())
-    }
-}
-
-impl Eq for ResourceDef {}
-
-impl PartialEq for ResourceDef {
-    fn eq(&self, other: &ResourceDef) -> bool {
-        self.pattern == other.pattern
-    }
-}
-
-impl Hash for ResourceDef {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.pattern.hash(state);
-    }
-}
-
-impl<'a> From<&'a str> for ResourceDef {
-    fn from(path: &'a str) -> ResourceDef {
-        ResourceDef::new(path)
-    }
-}
-
-impl From<String> for ResourceDef {
-    fn from(path: String) -> ResourceDef {
-        ResourceDef::new(path)
-    }
-}
-
-pub(crate) fn insert_slash(path: &str) -> String {
-    let mut path = path.to_owned();
-    if !path.is_empty() && !path.starts_with('/') {
-        path.insert(0, '/');
-    };
-    path
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_parse_static() {
-        let re = ResourceDef::new("/");
-        assert!(re.is_match("/"));
-        assert!(!re.is_match("/a"));
-
-        let re = ResourceDef::new("/name");
-        assert!(re.is_match("/name"));
-        assert!(!re.is_match("/name1"));
-        assert!(!re.is_match("/name/"));
-        assert!(!re.is_match("/name~"));
-
-        assert_eq!(re.is_prefix_match("/name"), Some(5));
-        assert_eq!(re.is_prefix_match("/name1"), None);
-        assert_eq!(re.is_prefix_match("/name/"), None);
-        assert_eq!(re.is_prefix_match("/name~"), None);
-
-        let re = ResourceDef::new("/name/");
-        assert!(re.is_match("/name/"));
-        assert!(!re.is_match("/name"));
-        assert!(!re.is_match("/name/gs"));
-
-        let re = ResourceDef::new("/user/profile");
-        assert!(re.is_match("/user/profile"));
-        assert!(!re.is_match("/user/profile/profile"));
-    }
-
-    #[test]
-    fn test_parse_param() {
-        let re = ResourceDef::new("/user/{id}");
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(!re.is_match("/user/2345/"));
-        assert!(!re.is_match("/user/2345/sdg"));
-
-        let mut path = Path::new("/user/profile");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "profile");
-
-        let mut path = Path::new("/user/1245125");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "1245125");
-
-        let re = ResourceDef::new("/v{version}/resource/{id}");
-        assert!(re.is_match("/v1/resource/320120"));
-        assert!(!re.is_match("/v/resource/1"));
-        assert!(!re.is_match("/resource"));
-
-        let mut path = Path::new("/v151/resource/adage32");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("version").unwrap(), "151");
-        assert_eq!(path.get("id").unwrap(), "adage32");
-
-        let re = ResourceDef::new("/{id:[[:digit:]]{6}}");
-        assert!(re.is_match("/012345"));
-        assert!(!re.is_match("/012"));
-        assert!(!re.is_match("/01234567"));
-        assert!(!re.is_match("/XXXXXX"));
-
-        let mut path = Path::new("/012345");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "012345");
-    }
-
-    #[allow(clippy::cognitive_complexity)]
-    #[test]
-    fn test_dynamic_set() {
-        let re = ResourceDef::new(vec![
-            "/user/{id}",
-            "/v{version}/resource/{id}",
-            "/{id:[[:digit:]]{6}}",
-        ]);
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(!re.is_match("/user/2345/"));
-        assert!(!re.is_match("/user/2345/sdg"));
-
-        let mut path = Path::new("/user/profile");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "profile");
-
-        let mut path = Path::new("/user/1245125");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "1245125");
-
-        assert!(re.is_match("/v1/resource/320120"));
-        assert!(!re.is_match("/v/resource/1"));
-        assert!(!re.is_match("/resource"));
-
-        let mut path = Path::new("/v151/resource/adage32");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("version").unwrap(), "151");
-        assert_eq!(path.get("id").unwrap(), "adage32");
-
-        assert!(re.is_match("/012345"));
-        assert!(!re.is_match("/012"));
-        assert!(!re.is_match("/01234567"));
-        assert!(!re.is_match("/XXXXXX"));
-
-        let mut path = Path::new("/012345");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "012345");
-
-        let re = ResourceDef::new([
-            "/user/{id}",
-            "/v{version}/resource/{id}",
-            "/{id:[[:digit:]]{6}}",
-        ]);
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(!re.is_match("/user/2345/"));
-        assert!(!re.is_match("/user/2345/sdg"));
-
-        let re = ResourceDef::new([
-            "/user/{id}".to_string(),
-            "/v{version}/resource/{id}".to_string(),
-            "/{id:[[:digit:]]{6}}".to_string(),
-        ]);
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(!re.is_match("/user/2345/"));
-        assert!(!re.is_match("/user/2345/sdg"));
-    }
-
-    #[test]
-    fn test_parse_tail() {
-        let re = ResourceDef::new("/user/-{id}*");
-
-        let mut path = Path::new("/user/-profile");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "profile");
-
-        let mut path = Path::new("/user/-2345");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "2345");
-
-        let mut path = Path::new("/user/-2345/");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "2345/");
-
-        let mut path = Path::new("/user/-2345/sdg");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "2345/sdg");
-    }
-
-    #[test]
-    fn test_static_tail() {
-        let re = ResourceDef::new("/user*");
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(re.is_match("/user/2345/"));
-        assert!(re.is_match("/user/2345/sdg"));
-
-        let re = ResourceDef::new("/user/*");
-        assert!(re.is_match("/user/profile"));
-        assert!(re.is_match("/user/2345"));
-        assert!(re.is_match("/user/2345/"));
-        assert!(re.is_match("/user/2345/sdg"));
-    }
-
-    #[cfg(feature = "http")]
-    #[test]
-    fn test_parse_urlencoded_param() {
-        use std::convert::TryFrom;
-
-        let re = ResourceDef::new("/user/{id}/test");
-
-        let mut path = Path::new("/user/2345/test");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "2345");
-
-        let mut path = Path::new("/user/qwe%25/test");
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "qwe%25");
-
-        let uri = http::Uri::try_from("/user/qwe%25/test").unwrap();
-        let mut path = Path::new(uri);
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "qwe%25");
-    }
-
-    #[test]
-    fn test_resource_prefix() {
-        let re = ResourceDef::prefix("/name");
-        assert!(re.is_match("/name"));
-        assert!(re.is_match("/name/"));
-        assert!(re.is_match("/name/test/test"));
-        assert!(re.is_match("/name1"));
-        assert!(re.is_match("/name~"));
-
-        assert_eq!(re.is_prefix_match("/name"), Some(5));
-        assert_eq!(re.is_prefix_match("/name/"), Some(5));
-        assert_eq!(re.is_prefix_match("/name/test/test"), Some(5));
-        assert_eq!(re.is_prefix_match("/name1"), None);
-        assert_eq!(re.is_prefix_match("/name~"), None);
-
-        let re = ResourceDef::prefix("/name/");
-        assert!(re.is_match("/name/"));
-        assert!(re.is_match("/name/gs"));
-        assert!(!re.is_match("/name"));
-
-        let re = ResourceDef::root_prefix("name/");
-        assert!(re.is_match("/name/"));
-        assert!(re.is_match("/name/gs"));
-        assert!(!re.is_match("/name"));
-    }
-
-    #[test]
-    fn test_resource_prefix_dynamic() {
-        let re = ResourceDef::prefix("/{name}/");
-        assert!(re.is_match("/name/"));
-        assert!(re.is_match("/name/gs"));
-        assert!(!re.is_match("/name"));
-
-        assert_eq!(re.is_prefix_match("/name/"), Some(6));
-        assert_eq!(re.is_prefix_match("/name/gs"), Some(6));
-        assert_eq!(re.is_prefix_match("/name"), None);
-
-        let mut path = Path::new("/test2/");
-        assert!(re.match_path(&mut path));
-        assert_eq!(&path["name"], "test2");
-        assert_eq!(&path[0], "test2");
-
-        let mut path = Path::new("/test2/subpath1/subpath2/index.html");
-        assert!(re.match_path(&mut path));
-        assert_eq!(&path["name"], "test2");
-        assert_eq!(&path[0], "test2");
-    }
-
-    #[test]
-    fn test_resource_path() {
-        let mut s = String::new();
-        let resource = ResourceDef::new("/user/{item1}/test");
-        assert!(resource.resource_path(&mut s, &mut (&["user1"]).iter()));
-        assert_eq!(s, "/user/user1/test");
-
-        let mut s = String::new();
-        let resource = ResourceDef::new("/user/{item1}/{item2}/test");
-        assert!(resource.resource_path(&mut s, &mut (&["item", "item2"]).iter()));
-        assert_eq!(s, "/user/item/item2/test");
-
-        let mut s = String::new();
-        let resource = ResourceDef::new("/user/{item1}/{item2}");
-        assert!(resource.resource_path(&mut s, &mut (&["item", "item2"]).iter()));
-        assert_eq!(s, "/user/item/item2");
-
-        let mut s = String::new();
-        let resource = ResourceDef::new("/user/{item1}/{item2}/");
-        assert!(resource.resource_path(&mut s, &mut (&["item", "item2"]).iter()));
-        assert_eq!(s, "/user/item/item2/");
-
-        let mut s = String::new();
-        assert!(!resource.resource_path(&mut s, &mut (&["item"]).iter()));
-
-        let mut s = String::new();
-        assert!(resource.resource_path(&mut s, &mut (&["item", "item2"]).iter()));
-        assert_eq!(s, "/user/item/item2/");
-        assert!(!resource.resource_path(&mut s, &mut (&["item"]).iter()));
-
-        let mut s = String::new();
-        assert!(resource.resource_path(&mut s, &mut vec!["item", "item2"].into_iter()));
-        assert_eq!(s, "/user/item/item2/");
-
-        let mut map = HashMap::new();
-        map.insert("item1", "item");
-
-        let mut s = String::new();
-        assert!(!resource.resource_path_named(&mut s, &map));
-
-        let mut s = String::new();
-        map.insert("item2", "item2");
-        assert!(resource.resource_path_named(&mut s, &map));
-        assert_eq!(s, "/user/item/item2/");
-    }
-}

actix-router/src/router.rs

@@ -1,259 +0,0 @@
-use crate::{IntoPattern, Resource, ResourceDef, ResourcePath};
-
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct ResourceId(pub u16);
-
-/// Information about current resource
-#[derive(Clone, Debug)]
-pub struct ResourceInfo {
-    resource: ResourceId,
-}
-
-/// Resource router.
-pub struct Router<T, U = ()>(Vec<(ResourceDef, T, Option<U>)>);
-
-impl<T, U> Router<T, U> {
-    pub fn build() -> RouterBuilder<T, U> {
-        RouterBuilder {
-            resources: Vec::new(),
-        }
-    }
-
-    pub fn recognize<R, P>(&self, resource: &mut R) -> Option<(&T, ResourceId)>
-    where
-        R: Resource<P>,
-        P: ResourcePath,
-    {
-        for item in self.0.iter() {
-            if item.0.match_path(resource.resource_path()) {
-                return Some((&item.1, ResourceId(item.0.id())));
-            }
-        }
-        None
-    }
-
-    pub fn recognize_mut<R, P>(&mut self, resource: &mut R) -> Option<(&mut T, ResourceId)>
-    where
-        R: Resource<P>,
-        P: ResourcePath,
-    {
-        for item in self.0.iter_mut() {
-            if item.0.match_path(resource.resource_path()) {
-                return Some((&mut item.1, ResourceId(item.0.id())));
-            }
-        }
-        None
-    }
-
-    pub fn recognize_checked<R, P, F>(
-        &self,
-        resource: &mut R,
-        check: F,
-    ) -> Option<(&T, ResourceId)>
-    where
-        F: Fn(&R, &Option<U>) -> bool,
-        R: Resource<P>,
-        P: ResourcePath,
-    {
-        for item in self.0.iter() {
-            if item.0.match_path_checked(resource, &check, &item.2) {
-                return Some((&item.1, ResourceId(item.0.id())));
-            }
-        }
-        None
-    }
-
-    pub fn recognize_mut_checked<R, P, F>(
-        &mut self,
-        resource: &mut R,
-        check: F,
-    ) -> Option<(&mut T, ResourceId)>
-    where
-        F: Fn(&R, &Option<U>) -> bool,
-        R: Resource<P>,
-        P: ResourcePath,
-    {
-        for item in self.0.iter_mut() {
-            if item.0.match_path_checked(resource, &check, &item.2) {
-                return Some((&mut item.1, ResourceId(item.0.id())));
-            }
-        }
-        None
-    }
-}
-
-pub struct RouterBuilder<T, U = ()> {
-    resources: Vec<(ResourceDef, T, Option<U>)>,
-}
-
-impl<T, U> RouterBuilder<T, U> {
-    /// Register resource for specified path.
-    pub fn path<P: IntoPattern>(
-        &mut self,
-        path: P,
-        resource: T,
-    ) -> &mut (ResourceDef, T, Option<U>) {
-        self.resources
-            .push((ResourceDef::new(path), resource, None));
-        self.resources.last_mut().unwrap()
-    }
-
-    /// Register resource for specified path prefix.
-    pub fn prefix(&mut self, prefix: &str, resource: T) -> &mut (ResourceDef, T, Option<U>) {
-        self.resources
-            .push((ResourceDef::prefix(prefix), resource, None));
-        self.resources.last_mut().unwrap()
-    }
-
-    /// Register resource for ResourceDef
-    pub fn rdef(&mut self, rdef: ResourceDef, resource: T) -> &mut (ResourceDef, T, Option<U>) {
-        self.resources.push((rdef, resource, None));
-        self.resources.last_mut().unwrap()
-    }
-
-    /// Finish configuration and create router instance.
-    pub fn finish(self) -> Router<T, U> {
-        Router(self.resources)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::path::Path;
-    use crate::router::{ResourceId, Router};
-
-    #[allow(clippy::cognitive_complexity)]
-    #[test]
-    fn test_recognizer_1() {
-        let mut router = Router::<usize>::build();
-        router.path("/name", 10).0.set_id(0);
-        router.path("/name/{val}", 11).0.set_id(1);
-        router.path("/name/{val}/index.html", 12).0.set_id(2);
-        router.path("/file/{file}.{ext}", 13).0.set_id(3);
-        router.path("/v{val}/{val2}/index.html", 14).0.set_id(4);
-        router.path("/v/{tail:.*}", 15).0.set_id(5);
-        router.path("/test2/{test}.html", 16).0.set_id(6);
-        router.path("/{test}/index.html", 17).0.set_id(7);
-        let mut router = router.finish();
-
-        let mut path = Path::new("/unknown");
-        assert!(router.recognize_mut(&mut path).is_none());
-
-        let mut path = Path::new("/name");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 10);
-        assert_eq!(info, ResourceId(0));
-        assert!(path.is_empty());
-
-        let mut path = Path::new("/name/value");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 11);
-        assert_eq!(info, ResourceId(1));
-        assert_eq!(path.get("val").unwrap(), "value");
-        assert_eq!(&path["val"], "value");
-
-        let mut path = Path::new("/name/value2/index.html");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 12);
-        assert_eq!(info, ResourceId(2));
-        assert_eq!(path.get("val").unwrap(), "value2");
-
-        let mut path = Path::new("/file/file.gz");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 13);
-        assert_eq!(info, ResourceId(3));
-        assert_eq!(path.get("file").unwrap(), "file");
-        assert_eq!(path.get("ext").unwrap(), "gz");
-
-        let mut path = Path::new("/vtest/ttt/index.html");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 14);
-        assert_eq!(info, ResourceId(4));
-        assert_eq!(path.get("val").unwrap(), "test");
-        assert_eq!(path.get("val2").unwrap(), "ttt");
-
-        let mut path = Path::new("/v/blah-blah/index.html");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 15);
-        assert_eq!(info, ResourceId(5));
-        assert_eq!(path.get("tail").unwrap(), "blah-blah/index.html");
-
-        let mut path = Path::new("/test2/index.html");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 16);
-        assert_eq!(info, ResourceId(6));
-        assert_eq!(path.get("test").unwrap(), "index");
-
-        let mut path = Path::new("/bbb/index.html");
-        let (h, info) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 17);
-        assert_eq!(info, ResourceId(7));
-        assert_eq!(path.get("test").unwrap(), "bbb");
-    }
-
-    #[test]
-    fn test_recognizer_2() {
-        let mut router = Router::<usize>::build();
-        router.path("/index.json", 10);
-        router.path("/{source}.json", 11);
-        let mut router = router.finish();
-
-        let mut path = Path::new("/index.json");
-        let (h, _) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 10);
-
-        let mut path = Path::new("/test.json");
-        let (h, _) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 11);
-    }
-
-    #[test]
-    fn test_recognizer_with_prefix() {
-        let mut router = Router::<usize>::build();
-        router.path("/name", 10).0.set_id(0);
-        router.path("/name/{val}", 11).0.set_id(1);
-        let mut router = router.finish();
-
-        let mut path = Path::new("/name");
-        path.skip(5);
-        assert!(router.recognize_mut(&mut path).is_none());
-
-        let mut path = Path::new("/test/name");
-        path.skip(5);
-        let (h, _) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 10);
-
-        let mut path = Path::new("/test/name/value");
-        path.skip(5);
-        let (h, id) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 11);
-        assert_eq!(id, ResourceId(1));
-        assert_eq!(path.get("val").unwrap(), "value");
-        assert_eq!(&path["val"], "value");
-
-        // same patterns
-        let mut router = Router::<usize>::build();
-        router.path("/name", 10);
-        router.path("/name/{val}", 11);
-        let mut router = router.finish();
-
-        let mut path = Path::new("/name");
-        path.skip(6);
-        assert!(router.recognize_mut(&mut path).is_none());
-
-        let mut path = Path::new("/test2/name");
-        path.skip(6);
-        let (h, _) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 10);
-
-        let mut path = Path::new("/test2/name-test");
-        path.skip(6);
-        assert!(router.recognize_mut(&mut path).is_none());
-
-        let mut path = Path::new("/test2/name/ttt");
-        path.skip(6);
-        let (h, _) = router.recognize_mut(&mut path).unwrap();
-        assert_eq!(*h, 11);
-        assert_eq!(&path["val"], "ttt");
-    }
-}

actix-router/src/url.rs

@@ -1,247 +0,0 @@
-use crate::ResourcePath;
-
-#[allow(dead_code)]
-const GEN_DELIMS: &[u8] = b":/?#[]@";
-#[allow(dead_code)]
-const SUB_DELIMS_WITHOUT_QS: &[u8] = b"!$'()*,";
-#[allow(dead_code)]
-const SUB_DELIMS: &[u8] = b"!$'()*,+?=;";
-#[allow(dead_code)]
-const RESERVED: &[u8] = b":/?#[]@!$'()*,+?=;";
-#[allow(dead_code)]
-const UNRESERVED: &[u8] = b"abcdefghijklmnopqrstuvwxyz
-    ABCDEFGHIJKLMNOPQRSTUVWXYZ
-    1234567890
-    -._~";
-const ALLOWED: &[u8] = b"abcdefghijklmnopqrstuvwxyz
-    ABCDEFGHIJKLMNOPQRSTUVWXYZ
-    1234567890
-    -._~
-    !$'()*,";
-const QS: &[u8] = b"+&=;b";
-
-#[inline]
-fn bit_at(array: &[u8], ch: u8) -> bool {
-    array[(ch >> 3) as usize] & (1 << (ch & 7)) != 0
-}
-
-#[inline]
-fn set_bit(array: &mut [u8], ch: u8) {
-    array[(ch >> 3) as usize] |= 1 << (ch & 7)
-}
-
-thread_local! {
-    static DEFAULT_QUOTER: Quoter = Quoter::new(b"@:", b"/+");
-}
-
-#[derive(Default, Clone, Debug)]
-pub struct Url {
-    uri: http::Uri,
-    path: Option<String>,
-}
-
-impl Url {
-    pub fn new(uri: http::Uri) -> Url {
-        let path = DEFAULT_QUOTER.with(|q| q.requote(uri.path().as_bytes()));
-
-        Url { uri, path }
-    }
-
-    pub fn with_quoter(uri: http::Uri, quoter: &Quoter) -> Url {
-        Url {
-            path: quoter.requote(uri.path().as_bytes()),
-            uri,
-        }
-    }
-
-    pub fn uri(&self) -> &http::Uri {
-        &self.uri
-    }
-
-    pub fn path(&self) -> &str {
-        if let Some(ref s) = self.path {
-            s
-        } else {
-            self.uri.path()
-        }
-    }
-
-    #[inline]
-    pub fn update(&mut self, uri: &http::Uri) {
-        self.uri = uri.clone();
-        self.path = DEFAULT_QUOTER.with(|q| q.requote(uri.path().as_bytes()));
-    }
-
-    #[inline]
-    pub fn update_with_quoter(&mut self, uri: &http::Uri, quoter: &Quoter) {
-        self.uri = uri.clone();
-        self.path = quoter.requote(uri.path().as_bytes());
-    }
-}
-
-impl ResourcePath for Url {
-    #[inline]
-    fn path(&self) -> &str {
-        self.path()
-    }
-}
-
-pub struct Quoter {
-    safe_table: [u8; 16],
-    protected_table: [u8; 16],
-}
-
-impl Quoter {
-    pub fn new(safe: &[u8], protected: &[u8]) -> Quoter {
-        let mut q = Quoter {
-            safe_table: [0; 16],
-            protected_table: [0; 16],
-        };
-
-        // prepare safe table
-        for i in 0..128 {
-            if ALLOWED.contains(&i) {
-                set_bit(&mut q.safe_table, i);
-            }
-            if QS.contains(&i) {
-                set_bit(&mut q.safe_table, i);
-            }
-        }
-
-        for ch in safe {
-            set_bit(&mut q.safe_table, *ch)
-        }
-
-        // prepare protected table
-        for ch in protected {
-            set_bit(&mut q.safe_table, *ch);
-            set_bit(&mut q.protected_table, *ch);
-        }
-
-        q
-    }
-
-    pub fn requote(&self, val: &[u8]) -> Option<String> {
-        let mut has_pct = 0;
-        let mut pct = [b'%', 0, 0];
-        let mut idx = 0;
-        let mut cloned: Option<Vec<u8>> = None;
-
-        let len = val.len();
-        while idx < len {
-            let ch = val[idx];
-
-            if has_pct != 0 {
-                pct[has_pct] = val[idx];
-                has_pct += 1;
-                if has_pct == 3 {
-                    has_pct = 0;
-                    let buf = cloned.as_mut().unwrap();
-
-                    if let Some(ch) = restore_ch(pct[1], pct[2]) {
-                        if ch < 128 {
-                            if bit_at(&self.protected_table, ch) {
-                                buf.extend_from_slice(&pct);
-                                idx += 1;
-                                continue;
-                            }
-
-                            if bit_at(&self.safe_table, ch) {
-                                buf.push(ch);
-                                idx += 1;
-                                continue;
-                            }
-                        }
-                        buf.push(ch);
-                    } else {
-                        buf.extend_from_slice(&pct[..]);
-                    }
-                }
-            } else if ch == b'%' {
-                has_pct = 1;
-                if cloned.is_none() {
-                    let mut c = Vec::with_capacity(len);
-                    c.extend_from_slice(&val[..idx]);
-                    cloned = Some(c);
-                }
-            } else if let Some(ref mut cloned) = cloned {
-                cloned.push(ch)
-            }
-            idx += 1;
-        }
-
-        cloned.map(|data| {
-            // SAFETY: we get data from http::Uri, which does UTF-8 checks already
-            // this code only decodes valid pct encoded values
-            unsafe { String::from_utf8_unchecked(data) }
-        })
-    }
-}
-
-#[inline]
-fn from_hex(v: u8) -> Option<u8> {
-    if (b'0'..=b'9').contains(&v) {
-        Some(v - 0x30) // ord('0') == 0x30
-    } else if (b'A'..=b'F').contains(&v) {
-        Some(v - 0x41 + 10) // ord('A') == 0x41
-    } else if (b'a'..=b'f').contains(&v) {
-        Some(v - 0x61 + 10) // ord('a') == 0x61
-    } else {
-        None
-    }
-}
-
-#[inline]
-fn restore_ch(d1: u8, d2: u8) -> Option<u8> {
-    from_hex(d1).and_then(|d1| from_hex(d2).map(move |d2| d1 << 4 | d2))
-}
-
-#[cfg(test)]
-mod tests {
-    use http::Uri;
-    use std::convert::TryFrom;
-
-    use super::*;
-    use crate::{Path, ResourceDef};
-
-    #[test]
-    fn test_parse_url() {
-        let re = ResourceDef::new("/user/{id}/test");
-
-        let url = Uri::try_from("/user/2345/test").unwrap();
-        let mut path = Path::new(Url::new(url));
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "2345");
-
-        let url = Uri::try_from("/user/qwe%25/test").unwrap();
-        let mut path = Path::new(Url::new(url));
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "qwe%");
-
-        let url = Uri::try_from("/user/qwe%25rty/test").unwrap();
-        let mut path = Path::new(Url::new(url));
-        assert!(re.match_path(&mut path));
-        assert_eq!(path.get("id").unwrap(), "qwe%rty");
-    }
-
-    #[test]
-    fn test_from_hex() {
-        let hex = b"0123456789abcdefABCDEF";
-
-        for i in 0..256 {
-            let c = i as u8;
-            if hex.contains(&c) {
-                assert!(from_hex(c).is_some())
-            } else {
-                assert!(from_hex(c).is_none())
-            }
-        }
-
-        let expected = [
-            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 10, 11, 12, 13, 14, 15,
-        ];
-        for i in 0..hex.len() {
-            assert_eq!(from_hex(hex[i]).unwrap(), expected[i]);
-        }
-    }
-}

actix-rt/CHANGES.md

@@ -3,12 +3,34 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 2.5.0 - 2021-11-22
+* Add `System::run_with_code` to allow retrieving the exit code on stop. [#411]
+
+[#411]: https://github.com/actix/actix-net/pull/411
+
+
+## 2.4.0 - 2021-11-05
+* Add `Arbiter::try_current` for situations where thread may or may not have Arbiter context. [#408]
+* Start io-uring with `System::new` when feature is enabled. [#395]
+
+[#395]: https://github.com/actix/actix-net/pull/395
+[#408]: https://github.com/actix/actix-net/pull/408
+
+
+## 2.3.0 - 2021-10-11
+* The `spawn` method can now resolve with non-unit outputs. [#369]
+* Add experimental (semver-exempt) `io-uring` feature for enabling async file I/O on linux. [#374]
+
+[#369]: https://github.com/actix/actix-net/pull/369
+[#374]: https://github.com/actix/actix-net/pull/374
+
+
 ## 2.2.0 - 2021-03-29
 * **BREAKING** `ActixStream::{poll_read_ready, poll_write_ready}` methods now return
   `Ready` object in ok variant. [#293]
   * Breakage is acceptable since `ActixStream` was not intended to be public.
 
-[#293] https://github.com/actix/actix-net/pull/293
+[#293]: https://github.com/actix/actix-net/pull/293
 
 
 ## 2.1.0 - 2021-02-24
@@ -92,7 +114,7 @@
 [#129]: https://github.com/actix/actix-net/issues/129
 
 
-## 1.1.0 - 2020-04-08 (YANKED)
+## 1.1.0 - 2020-04-08 _(YANKED)_
 * Expose `System::is_set` to check if current system has ben started [#99]
 * Add `Arbiter::is_running` to check if event loop is running [#124]
 * Add `Arbiter::local_join` associated function

actix-rt/Cargo.toml

@@ -1,15 +1,15 @@
 [package]
 name = "actix-rt"
-version = "2.2.0"
+version = "2.5.0"
 authors = [
     "Nikolay Kim <fafhrd91@gmail.com>",
     "Rob Ede <robjtede@icloud.com>",
+    "fakeshadow <24548779@qq.com>",
 ]
 description = "Tokio-based single-threaded async runtime for the Actix ecosystem"
 keywords = ["async", "futures", "io", "runtime"]
 homepage = "https://actix.rs"
-repository = "https://github.com/actix/actix-net"
-documentation = "https://docs.rs/actix-rt"
+repository = "https://github.com/actix/actix-net.git"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
 edition = "2018"
@@ -21,13 +21,17 @@ path = "src/lib.rs"
 [features]
 default = ["macros"]
 macros = ["actix-macros"]
+io-uring = ["tokio-uring"]
 
 [dependencies]
-actix-macros = { version = "0.2.0", optional = true }
+actix-macros = { version = "0.2.3", optional = true }
 
 futures-core = { version = "0.3", default-features = false }
-tokio = { version = "1.3", features = ["rt", "net", "parking_lot", "signal", "sync", "time"] }
+tokio = { version = "1.5.1", features = ["rt", "net", "parking_lot", "signal", "sync", "time"] }
+
+[target.'cfg(target_os = "linux")'.dependencies]
+tokio-uring = { version = "0.1", optional = true }
 
 [dev-dependencies]
-tokio = { version = "1.2", features = ["full"] }
+tokio = { version = "1.5.1", features = ["full"] }
 hyper = { version = "0.14", default-features = false, features = ["server", "tcp", "http1"] }

actix-rt/README.md

@@ -3,11 +3,11 @@
 > Tokio-based single-threaded async runtime for the Actix ecosystem.
 
 [![crates.io](https://img.shields.io/crates/v/actix-rt?label=latest)](https://crates.io/crates/actix-rt)
-[![Documentation](https://docs.rs/actix-rt/badge.svg?version=2.2.0)](https://docs.rs/actix-rt/2.2.0)
+[![Documentation](https://docs.rs/actix-rt/badge.svg?version=2.5.0)](https://docs.rs/actix-rt/2.5.0)
 [![Version](https://img.shields.io/badge/rustc-1.46+-ab6000.svg)](https://blog.rust-lang.org/2020/03/12/Rust-1.46.html)
 ![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-rt.svg)
 <br />
-[![dependency status](https://deps.rs/crate/actix-rt/2.2.0/status.svg)](https://deps.rs/crate/actix-rt/2.2.0)
+[![dependency status](https://deps.rs/crate/actix-rt/2.5.0/status.svg)](https://deps.rs/crate/actix-rt/2.5.0)
 ![Download](https://img.shields.io/crates/d/actix-rt.svg)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/WghFtEH6Hb)
 

actix-rt/src/arbiter.rs

@@ -9,12 +9,9 @@ use std::{
 };
 
 use futures_core::ready;
-use tokio::{sync::mpsc, task::LocalSet};
+use tokio::sync::mpsc;
 
-use crate::{
-    runtime::{default_tokio_runtime, Runtime},
-    system::{System, SystemCommand},
-};
+use crate::system::{System, SystemCommand};
 
 pub(crate) static COUNT: AtomicUsize = AtomicUsize::new(0);
 
@@ -98,16 +95,19 @@ impl Arbiter {
     ///
     /// # Panics
     /// Panics if a [System] is not registered on the current thread.
+    #[cfg(not(all(target_os = "linux", feature = "io-uring")))]
     #[allow(clippy::new_without_default)]
     pub fn new() -> Arbiter {
         Self::with_tokio_rt(|| {
-            default_tokio_runtime().expect("Cannot create new Arbiter's Runtime.")
+            crate::runtime::default_tokio_runtime()
+                .expect("Cannot create new Arbiter's Runtime.")
         })
     }
 
     /// Spawn a new Arbiter using the [Tokio Runtime](tokio-runtime) returned from a closure.
     ///
     /// [tokio-runtime]: tokio::runtime::Runtime
+    #[cfg(not(all(target_os = "linux", feature = "io-uring")))]
     #[doc(hidden)]
     pub fn with_tokio_rt<F>(runtime_factory: F) -> Arbiter
     where
@@ -127,7 +127,7 @@ impl Arbiter {
             .spawn({
                 let tx = tx.clone();
                 move || {
-                    let rt = Runtime::from(runtime_factory());
+                    let rt = crate::runtime::Runtime::from(runtime_factory());
                     let hnd = ArbiterHandle::new(tx);
 
                     System::set_current(sys);
@@ -159,15 +159,67 @@ impl Arbiter {
         Arbiter { tx, thread_handle }
     }
 
-    /// Sets up an Arbiter runner in a new System using the provided runtime local task set.
-    pub(crate) fn in_new_system(local: &LocalSet) -> ArbiterHandle {
+    /// Spawn a new Arbiter thread and start its event loop with `tokio-uring` runtime.
+    ///
+    /// # Panics
+    /// Panics if a [System] is not registered on the current thread.
+    #[cfg(all(target_os = "linux", feature = "io-uring"))]
+    #[allow(clippy::new_without_default)]
+    pub fn new() -> Arbiter {
+        let sys = System::current();
+        let system_id = sys.id();
+        let arb_id = COUNT.fetch_add(1, Ordering::Relaxed);
+
+        let name = format!("actix-rt|system:{}|arbiter:{}", system_id, arb_id);
+        let (tx, rx) = mpsc::unbounded_channel();
+
+        let (ready_tx, ready_rx) = std::sync::mpsc::channel::<()>();
+
+        let thread_handle = thread::Builder::new()
+            .name(name.clone())
+            .spawn({
+                let tx = tx.clone();
+                move || {
+                    let hnd = ArbiterHandle::new(tx);
+
+                    System::set_current(sys);
+
+                    HANDLE.with(|cell| *cell.borrow_mut() = Some(hnd.clone()));
+
+                    // register arbiter
+                    let _ = System::current()
+                        .tx()
+                        .send(SystemCommand::RegisterArbiter(arb_id, hnd));
+
+                    ready_tx.send(()).unwrap();
+
+                    // run arbiter event processing loop
+                    tokio_uring::start(ArbiterRunner { rx });
+
+                    // deregister arbiter
+                    let _ = System::current()
+                        .tx()
+                        .send(SystemCommand::DeregisterArbiter(arb_id));
+                }
+            })
+            .unwrap_or_else(|err| {
+                panic!("Cannot spawn Arbiter's thread: {:?}. {:?}", &name, err)
+            });
+
+        ready_rx.recv().unwrap();
+
+        Arbiter { tx, thread_handle }
+    }
+
+    /// Sets up an Arbiter runner in a new System using the environment's local set.
+    pub(crate) fn in_new_system() -> ArbiterHandle {
         let (tx, rx) = mpsc::unbounded_channel();
 
         let hnd = ArbiterHandle::new(tx);
 
         HANDLE.with(|cell| *cell.borrow_mut() = Some(hnd.clone()));
 
-        local.spawn_local(ArbiterRunner { rx });
+        crate::spawn(ArbiterRunner { rx });
 
         hnd
     }
@@ -188,6 +240,15 @@ impl Arbiter {
         })
     }
 
+    /// Try to get current running arbiter handle.
+    ///
+    /// Returns `None` if no Arbiter has been started.
+    ///
+    /// Unlike [`current`](Self::current), this never panics.
+    pub fn try_current() -> Option<ArbiterHandle> {
+        HANDLE.with(|cell| cell.borrow().clone())
+    }
+
     /// Stop Arbiter from continuing it's event loop.
     ///
     /// Returns true if stop message was sent successfully and false if the Arbiter has been dropped.

actix-rt/src/lib.rs

@@ -15,7 +15,7 @@
 //! blocking task thread-pool using [`task::spawn_blocking`].
 //!
 //! # Examples
-//! ```
+//! ```no_run
 //! use std::sync::mpsc;
 //! use actix_rt::{Arbiter, System};
 //!
@@ -32,13 +32,23 @@
 //! arbiter.stop();
 //! arbiter.join().unwrap();
 //! ```
+//!
+//! # `io-uring` Support
+//! There is experimental support for using io-uring with this crate by enabling the
+//! `io-uring` feature. For now, it is semver exempt.
+//!
+//! Note that there are currently some unimplemented parts of using `actix-rt` with `io-uring`.
+//! In particular, when running a `System`, only `System::block_on` is supported.
 
 #![deny(rust_2018_idioms, nonstandard_style)]
-#![allow(clippy::type_complexity)]
 #![warn(missing_docs)]
+#![allow(clippy::type_complexity)]
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
+#[cfg(all(not(target_os = "linux"), feature = "io-uring"))]
+compile_error!("io_uring is a linux only feature.");
+
 use std::future::Future;
 
 use tokio::task::JoinHandle;
@@ -46,7 +56,10 @@ use tokio::task::JoinHandle;
 // Cannot define a main macro when compiled into test harness.
 // Workaround for https://github.com/rust-lang/rust/issues/62127.
 #[cfg(all(feature = "macros", not(test)))]
-pub use actix_macros::{main, test};
+pub use actix_macros::main;
+
+#[cfg(feature = "macros")]
+pub use actix_macros::test;
 
 mod arbiter;
 mod runtime;
@@ -155,14 +168,41 @@ pub mod task {
     pub use tokio::task::{spawn_blocking, yield_now, JoinError, JoinHandle};
 }
 
-/// Spawns a future on the current thread.
+/// Spawns a future on the current thread as a new task.
+///
+/// If not immediately awaited, the task can be cancelled using [`JoinHandle::abort`].
+///
+/// The provided future is spawned as a new task; therefore, panics are caught.
 ///
 /// # Panics
 /// Panics if Actix system is not running.
+///
+/// # Examples
+/// ```
+/// # use std::time::Duration;
+/// # actix_rt::Runtime::new().unwrap().block_on(async {
+/// // task resolves successfully
+/// assert_eq!(actix_rt::spawn(async { 1 }).await.unwrap(), 1);
+///
+/// // task panics
+/// assert!(actix_rt::spawn(async {
+///     panic!("panic is caught at task boundary");
+/// })
+/// .await
+/// .unwrap_err()
+/// .is_panic());
+///
+/// // task is cancelled before completion
+/// let handle = actix_rt::spawn(actix_rt::time::sleep(Duration::from_secs(100)));
+/// handle.abort();
+/// assert!(handle.await.unwrap_err().is_cancelled());
+/// # });
+/// ```
 #[inline]
-pub fn spawn<Fut>(f: Fut) -> JoinHandle<()>
+pub fn spawn<Fut>(f: Fut) -> JoinHandle<Fut::Output>
 where
-    Fut: Future<Output = ()> + 'static,
+    Fut: Future + 'static,
+    Fut::Output: 'static,
 {
     tokio::task::spawn_local(f)
 }

actix-rt/src/runtime.rs

@@ -31,11 +31,6 @@ impl Runtime {
         })
     }
 
-    /// Reference to local task set.
-    pub(crate) fn local_set(&self) -> &LocalSet {
-        &self.local
-    }
-
     /// Offload a future onto the single-threaded runtime.
     ///
     /// The returned join handle can be used to await the future's result.

actix-rt/src/system.rs

@@ -11,7 +11,7 @@ use std::{
 use futures_core::ready;
 use tokio::sync::{mpsc, oneshot};
 
-use crate::{arbiter::ArbiterHandle, runtime::default_tokio_runtime, Arbiter, Runtime};
+use crate::{arbiter::ArbiterHandle, Arbiter};
 
 static SYSTEM_COUNT: AtomicUsize = AtomicUsize::new(0);
 
@@ -29,6 +29,7 @@ pub struct System {
     arbiter_handle: ArbiterHandle,
 }
 
+#[cfg(not(feature = "io-uring"))]
 impl System {
     /// Create a new system.
     ///
@@ -37,7 +38,7 @@ impl System {
     #[allow(clippy::new_ret_no_self)]
     pub fn new() -> SystemRunner {
         Self::with_tokio_rt(|| {
-            default_tokio_runtime()
+            crate::runtime::default_tokio_runtime()
                 .expect("Default Actix (Tokio) runtime could not be created.")
         })
     }
@@ -53,8 +54,8 @@ impl System {
         let (stop_tx, stop_rx) = oneshot::channel();
         let (sys_tx, sys_rx) = mpsc::unbounded_channel();
 
-        let rt = Runtime::from(runtime_factory());
-        let sys_arbiter = Arbiter::in_new_system(rt.local_set());
+        let rt = crate::runtime::Runtime::from(runtime_factory());
+        let sys_arbiter = rt.block_on(async { Arbiter::in_new_system() });
         let system = System::construct(sys_tx, sys_arbiter.clone());
 
         system
@@ -66,13 +67,34 @@ impl System {
         let sys_ctrl = SystemController::new(sys_rx, stop_tx);
         rt.spawn(sys_ctrl);
 
-        SystemRunner {
-            rt,
-            stop_rx,
-            system,
-        }
+        SystemRunner { rt, stop_rx }
+    }
+}
+
+#[cfg(feature = "io-uring")]
+impl System {
+    /// Create a new system.
+    ///
+    /// # Panics
+    /// Panics if underlying Tokio runtime can not be created.
+    #[allow(clippy::new_ret_no_self)]
+    pub fn new() -> SystemRunner {
+        SystemRunner
     }
 
+    /// Create a new System using the [Tokio Runtime](tokio-runtime) returned from a closure.
+    ///
+    /// [tokio-runtime]: tokio::runtime::Runtime
+    #[doc(hidden)]
+    pub fn with_tokio_rt<F>(_: F) -> SystemRunner
+    where
+        F: Fn() -> tokio::runtime::Runtime,
+    {
+        unimplemented!("System::with_tokio_rt is not implemented for io-uring feature yet")
+    }
+}
+
+impl System {
     /// Constructs new system and registers it on the current thread.
     pub(crate) fn construct(
         sys_tx: mpsc::UnboundedSender<SystemCommand>,
@@ -104,7 +126,7 @@ impl System {
     ///
     /// Returns `None` if no System has been started.
     ///
-    /// Contrary to `current`, this never panics.
+    /// Unlike [`current`](Self::current), this never panics.
     pub fn try_current() -> Option<System> {
         CURRENT.with(|cell| cell.borrow().clone())
     }
@@ -150,34 +172,36 @@ impl System {
 }
 
 /// Runner that keeps a [System]'s event loop alive until stop message is received.
+#[cfg(not(feature = "io-uring"))]
 #[must_use = "A SystemRunner does nothing unless `run` is called."]
 #[derive(Debug)]
 pub struct SystemRunner {
-    rt: Runtime,
+    rt: crate::runtime::Runtime,
     stop_rx: oneshot::Receiver<i32>,
-    system: System,
 }
 
+#[cfg(not(feature = "io-uring"))]
 impl SystemRunner {
     /// Starts event loop and will return once [System] is [stopped](System::stop).
     pub fn run(self) -> io::Result<()> {
+        let exit_code = self.run_with_code()?;
+
+        match exit_code {
+            0 => Ok(()),
+            nonzero => Err(io::Error::new(
+                io::ErrorKind::Other,
+                format!("Non-zero exit code: {}", nonzero),
+            )),
+        }
+    }
+
+    /// Runs the event loop until [stopped](System::stop_with_code), returning the exit code.
+    pub fn run_with_code(self) -> io::Result<i32> {
         let SystemRunner { rt, stop_rx, .. } = self;
 
         // run loop
-        match rt.block_on(stop_rx) {
-            Ok(code) => {
-                if code != 0 {
-                    Err(io::Error::new(
-                        io::ErrorKind::Other,
-                        format!("Non-zero exit code: {}", code),
-                    ))
-                } else {
-                    Ok(())
-                }
-            }
-
-            Err(e) => Err(io::Error::new(io::ErrorKind::Other, e)),
-        }
+        rt.block_on(stop_rx)
+            .map_err(|err| io::Error::new(io::ErrorKind::Other, err))
     }
 
     /// Runs the provided future, blocking the current thread until the future completes.
@@ -187,6 +211,52 @@ impl SystemRunner {
     }
 }
 
+/// Runner that keeps a [System]'s event loop alive until stop message is received.
+#[cfg(feature = "io-uring")]
+#[must_use = "A SystemRunner does nothing unless `run` is called."]
+#[derive(Debug)]
+pub struct SystemRunner;
+
+#[cfg(feature = "io-uring")]
+impl SystemRunner {
+    /// Starts event loop and will return once [System] is [stopped](System::stop).
+    pub fn run(self) -> io::Result<()> {
+        unimplemented!("SystemRunner::run is not implemented for io-uring feature yet");
+    }
+
+    /// Runs the event loop until [stopped](System::stop_with_code), returning the exit code.
+    pub fn run_with_code(self) -> io::Result<i32> {
+        unimplemented!(
+            "SystemRunner::run_with_code is not implemented for io-uring feature yet"
+        );
+    }
+
+    /// Runs the provided future, blocking the current thread until the future completes.
+    #[inline]
+    pub fn block_on<F: Future>(&self, fut: F) -> F::Output {
+        tokio_uring::start(async move {
+            let (stop_tx, stop_rx) = oneshot::channel();
+            let (sys_tx, sys_rx) = mpsc::unbounded_channel();
+
+            let sys_arbiter = Arbiter::in_new_system();
+            let system = System::construct(sys_tx, sys_arbiter.clone());
+
+            system
+                .tx()
+                .send(SystemCommand::RegisterArbiter(usize::MAX, sys_arbiter))
+                .unwrap();
+
+            // init background system arbiter
+            let sys_ctrl = SystemController::new(sys_rx, stop_tx);
+            tokio_uring::spawn(sys_ctrl);
+
+            let res = fut.await;
+            drop(stop_rx);
+            res
+        })
+    }
+}
+
 #[derive(Debug)]
 pub(crate) enum SystemCommand {
     Exit(i32),

actix-rt/tests/test-macro-import-conflict.rs

@@ -0,0 +1,17 @@
+//! Checks that test macro does not cause problems in the presence of imports named "test" that
+//! could be either a module with test items or the "test with runtime" macro itself.
+//!
+//! Before actix/actix-net#399 was implemented, this macro was running twice. The first run output
+//! `#[test]` and it got run again and since it was in scope.
+//!
+//! Prevented by using the fully-qualified test marker (`#[::core::prelude::v1::test]`).
+
+#![cfg(feature = "macros")]
+
+use actix_rt::time as test;
+
+#[actix_rt::test]
+async fn test_naming_conflict() {
+    use test as time;
+    time::sleep(std::time::Duration::from_millis(2)).await;
+}

actix-rt/tests/tests.rs

@@ -1,15 +1,15 @@
 use std::{
-    sync::{
-        atomic::{AtomicBool, Ordering},
-        mpsc::channel,
-        Arc,
-    },
-    thread,
+    future::Future,
     time::{Duration, Instant},
 };
 
-use actix_rt::{Arbiter, System};
-use tokio::sync::oneshot;
+use actix_rt::{task::JoinError, Arbiter, System};
+
+#[cfg(not(feature = "io-uring"))]
+use {
+    std::{sync::mpsc::channel, thread},
+    tokio::sync::oneshot,
+};
 
 #[test]
 fn await_for_timer() {
@@ -24,6 +24,15 @@ fn await_for_timer() {
     );
 }
 
+#[cfg(not(feature = "io-uring"))]
+#[test]
+fn run_with_code() {
+    let sys = System::new();
+    System::current().stop_with_code(42);
+    let exit_code = sys.run_with_code().expect("system stop should not error");
+    assert_eq!(exit_code, 42);
+}
+
 #[test]
 fn join_another_arbiter() {
     let time = Duration::from_secs(1);
@@ -99,13 +108,17 @@ fn wait_for_spawns() {
 
     let handle = rt.spawn(async {
         println!("running on the runtime");
-        // assertion panic is caught at task boundary
-        assert_eq!(1, 2);
+        // panic is caught at task boundary
+        panic!("intentional test panic");
     });
 
     assert!(rt.block_on(handle).is_err());
 }
 
+// Temporary disabled tests for io-uring feature.
+// They should be enabled when possible.
+
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn arbiter_spawn_fn_runs() {
     let _ = System::new();
@@ -122,6 +135,7 @@ fn arbiter_spawn_fn_runs() {
     arbiter.join().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn arbiter_handle_spawn_fn_runs() {
     let sys = System::new();
@@ -144,6 +158,7 @@ fn arbiter_handle_spawn_fn_runs() {
     sys.run().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn arbiter_drop_no_panic_fn() {
     let _ = System::new();
@@ -155,6 +170,7 @@ fn arbiter_drop_no_panic_fn() {
     arbiter.join().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn arbiter_drop_no_panic_fut() {
     let _ = System::new();
@@ -166,18 +182,7 @@ fn arbiter_drop_no_panic_fut() {
     arbiter.join().unwrap();
 }
 
-#[test]
-#[should_panic]
-fn no_system_current_panic() {
-    System::current();
-}
-
-#[test]
-#[should_panic]
-fn no_system_arbiter_new_panic() {
-    Arbiter::new();
-}
-
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn system_arbiter_spawn() {
     let runner = System::new();
@@ -208,6 +213,7 @@ fn system_arbiter_spawn() {
     thread.join().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn system_stop_stops_arbiters() {
     let sys = System::new();
@@ -220,8 +226,8 @@ fn system_stop_stops_arbiters() {
     System::current().stop();
     sys.run().unwrap();
 
-    // account for slightly slow thread de-spawns (only observed on windows)
-    thread::sleep(Duration::from_millis(100));
+    // account for slightly slow thread de-spawns
+    thread::sleep(Duration::from_millis(500));
 
     // arbiter should be dead and return false
     assert!(!Arbiter::current().spawn_fn(|| {}));
@@ -230,6 +236,7 @@ fn system_stop_stops_arbiters() {
     arb.join().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn new_system_with_tokio() {
     let (tx, rx) = channel();
@@ -262,8 +269,14 @@ fn new_system_with_tokio() {
     assert_eq!(rx.recv().unwrap(), 42);
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn new_arbiter_with_tokio() {
+    use std::sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    };
+
     let _ = System::new();
 
     let arb = Arbiter::with_tokio_rt(|| {
@@ -286,7 +299,19 @@ fn new_arbiter_with_tokio() {
 
     arb.join().unwrap();
 
-    assert_eq!(false, counter.load(Ordering::SeqCst));
+    assert!(!counter.load(Ordering::SeqCst));
+}
+
+#[test]
+#[should_panic]
+fn no_system_current_panic() {
+    System::current();
+}
+
+#[test]
+#[should_panic]
+fn no_system_arbiter_new_panic() {
+    Arbiter::new();
 }
 
 #[test]
@@ -298,3 +323,55 @@ fn try_current_no_system() {
 fn try_current_with_system() {
     System::new().block_on(async { assert!(System::try_current().is_some()) });
 }
+
+#[allow(clippy::unit_cmp)]
+#[test]
+fn spawn_local() {
+    System::new().block_on(async {
+        // demonstrate that spawn -> R is strictly more capable than spawn -> ()
+
+        assert_eq!(actix_rt::spawn(async {}).await.unwrap(), ());
+        assert_eq!(actix_rt::spawn(async { 1 }).await.unwrap(), 1);
+        assert!(actix_rt::spawn(async { panic!("") }).await.is_err());
+
+        actix_rt::spawn(async { tokio::time::sleep(Duration::from_millis(50)).await })
+            .await
+            .unwrap();
+
+        fn g<F: Future<Output = Result<(), JoinError>>>(_f: F) {}
+        g(actix_rt::spawn(async {}));
+        // g(actix_rt::spawn(async { 1 })); // compile err
+
+        fn h<F: Future<Output = Result<R, JoinError>>, R>(_f: F) {}
+        h(actix_rt::spawn(async {}));
+        h(actix_rt::spawn(async { 1 }));
+    })
+}
+
+#[cfg(all(target_os = "linux", feature = "io-uring"))]
+#[test]
+fn tokio_uring_arbiter() {
+    System::new().block_on(async {
+        let (tx, rx) = std::sync::mpsc::channel();
+
+        Arbiter::new().spawn(async move {
+            let handle = actix_rt::spawn(async move {
+                let f = tokio_uring::fs::File::create("test.txt").await.unwrap();
+                let buf = b"Hello World!";
+
+                let (res, _) = f.write_at(&buf[..], 0).await;
+                assert!(res.is_ok());
+
+                f.sync_all().await.unwrap();
+                f.close().await.unwrap();
+
+                std::fs::remove_file("test.txt").unwrap();
+            });
+
+            handle.await.unwrap();
+            tx.send(true).unwrap();
+        });
+
+        assert!(rx.recv().unwrap());
+    })
+}

actix-server/CHANGES.md

@@ -3,6 +3,51 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 2.0.0-beta.9 - 2021-11-15
+* Restore `Arbiter` support lost in `beta.8`. [#417]
+
+[#417]: https://github.com/actix/actix-net/pull/417
+
+
+## 2.0.0-beta.8 - 2021-11-05 _(YANKED)_
+* Fix non-unix signal handler. [#410]
+
+[#410]: https://github.com/actix/actix-net/pull/410
+
+
+## 2.0.0-beta.7 - 2021-11-05 _(YANKED)_
+* Server can be started in regular Tokio runtime. [#408]
+* Expose new `Server` type whose `Future` impl resolves when server stops. [#408]
+* Rename `Server` to `ServerHandle`. [#407]
+* Add `Server::handle` to obtain handle to server. [#408]
+* Rename `ServerBuilder::{maxconn => max_concurrent_connections}`. [#407]
+* Deprecate crate-level `new` shortcut for server builder. [#408]
+* Minimum supported Rust version (MSRV) is now 1.52.
+
+[#407]: https://github.com/actix/actix-net/pull/407
+[#408]: https://github.com/actix/actix-net/pull/408
+
+
+## 2.0.0-beta.6 - 2021-10-11
+* Add experimental (semver-exempt) `io-uring` feature for enabling async file I/O on linux. [#374]
+* Server no long listens to `SIGHUP` signal. Previously, the received was not used but did block
+  subsequent exit signals from working. [#389]
+* Remove `config` module. `ServiceConfig`, `ServiceRuntime` public types are removed due to
+  this change. [#349]
+* Remove `ServerBuilder::configure` [#349]
+
+[#374]: https://github.com/actix/actix-net/pull/374
+[#349]: https://github.com/actix/actix-net/pull/349
+[#389]: https://github.com/actix/actix-net/pull/389
+
+
+## 2.0.0-beta.5 - 2021-04-20
+* Server shutdown notifies all workers to exit regardless if shutdown is graceful. This causes all
+  workers to shutdown immediately in force shutdown case. [#333]
+
+[#333]: https://github.com/actix/actix-net/pull/333
+
+
 ## 2.0.0-beta.4 - 2021-04-01
 * Prevent panic when `shutdown_timeout` is very large. [f9262db]
 

actix-server/Cargo.toml

@@ -1,13 +1,12 @@
 [package]
 name = "actix-server"
-version = "2.0.0-beta.4"
+version = "2.0.0-beta.9"
 authors = [
     "Nikolay Kim <fafhrd91@gmail.com>",
     "fakeshadow <24548779@qq.com>",
 ]
 description = "General purpose TCP server built for the Actix ecosystem"
 keywords = ["network", "framework", "async", "futures"]
-homepage = "https://actix.rs"
 repository = "https://github.com/actix/actix-net.git"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
@@ -19,24 +18,29 @@ path = "src/lib.rs"
 
 [features]
 default = []
+io-uring = ["tokio-uring", "actix-rt/io-uring"]
 
 [dependencies]
-actix-rt = { version = "2.0.0", default-features = false }
-actix-service = "2.0.0-beta.5"
-actix-utils = "3.0.0-beta.4"
+actix-rt = { version = "2.4.0", default-features = false }
+actix-service = "2.0.0"
+actix-utils = "3.0.0"
 
 futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
+futures-util = { version = "0.3.7", default-features = false, features = ["alloc"] }
 log = "0.4"
-mio = { version = "0.7.6", features = ["os-poll", "net"] }
+mio = { version = "0.8", features = ["os-poll", "net"] }
 num_cpus = "1.13"
-slab = "0.4"
-tokio = { version = "1.2", features = ["sync"] }
+socket2 = "0.4.2"
+tokio = { version = "1.5.1", features = ["sync"] }
+
+# runtime for io-uring feature
+tokio-uring = { version = "0.1", optional = true }
 
 [dev-dependencies]
-actix-codec = "0.4.0-beta.1"
-actix-rt = "2.0.0"
+actix-codec = "0.4.0"
+actix-rt = "2.4.0"
 
 bytes = "1"
-env_logger = "0.8"
+env_logger = "0.9"
 futures-util = { version = "0.3.7", default-features = false, features = ["sink"] }
-tokio = { version = "1", features = ["io-util"] }
+tokio = { version = "1.5.1", features = ["io-util", "rt-multi-thread", "macros"] }

actix-server/examples/tcp-echo.rs

@@ -9,24 +9,24 @@
 //! Start typing. When you press enter the typed line will be echoed back. The server will log
 //! the length of each line it echos and the total size of data sent when the connection is closed.
 
-use std::sync::{
-    atomic::{AtomicUsize, Ordering},
-    Arc,
+use std::{
+    io,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        Arc,
+    },
 };
-use std::{env, io};
 
 use actix_rt::net::TcpStream;
 use actix_server::Server;
-use actix_service::pipeline_factory;
+use actix_service::{fn_service, ServiceFactoryExt as _};
 use bytes::BytesMut;
 use futures_util::future::ok;
 use log::{error, info};
-use tokio::io::{AsyncReadExt, AsyncWriteExt};
+use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
 
-#[actix_rt::main]
-async fn main() -> io::Result<()> {
-    env::set_var("RUST_LOG", "actix=trace,basic=trace");
-    env_logger::init();
+async fn run() -> io::Result<()> {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
 
     let count = Arc::new(AtomicUsize::new(0));
 
@@ -41,7 +41,7 @@ async fn main() -> io::Result<()> {
             let count = Arc::clone(&count);
             let num2 = Arc::clone(&count);
 
-            pipeline_factory(move |mut stream: TcpStream| {
+            fn_service(move |mut stream: TcpStream| {
                 let count = Arc::clone(&count);
 
                 async move {
@@ -86,3 +86,16 @@ async fn main() -> io::Result<()> {
         .run()
         .await
 }
+
+#[tokio::main]
+async fn main() -> io::Result<()> {
+    run().await?;
+    Ok(())
+}
+
+// alternatively:
+// #[actix_rt::main]
+// async fn main() -> io::Result<()> {
+//     run().await?;
+//     Ok(())
+// }

actix-server/src/accept.rs

@@ -1,410 +1,400 @@
-use std::time::Duration;
-use std::{io, thread};
+use std::{io, thread, time::Duration};
 
-use actix_rt::{
-    time::{sleep, Instant},
-    System,
-};
-use log::{error, info};
+use actix_rt::time::Instant;
+use log::{debug, error, info};
 use mio::{Interest, Poll, Token as MioToken};
-use slab::Slab;
 
-use crate::server::Server;
-use crate::socket::{MioListener, SocketAddr};
-use crate::waker_queue::{WakerInterest, WakerQueue, WAKER_TOKEN};
-use crate::worker::{Conn, WorkerHandle};
-use crate::Token;
+use crate::{
+    availability::Availability,
+    socket::MioListener,
+    waker_queue::{WakerInterest, WakerQueue, WAKER_TOKEN},
+    worker::{Conn, ServerWorker, WorkerHandleAccept, WorkerHandleServer},
+    ServerBuilder, ServerHandle,
+};
+
+const TIMEOUT_DURATION_ON_ERROR: Duration = Duration::from_millis(510);
 
 struct ServerSocketInfo {
-    /// Address of socket. Mainly used for logging.
-    addr: SocketAddr,
-
-    /// Beware this is the crate token for identify socket and should not be confused
-    /// with `mio::Token`.
-    token: Token,
+    token: usize,
 
     lst: MioListener,
 
     /// Timeout is used to mark the deadline when this socket's listener should be registered again
     /// after an error.
-    timeout: Option<Instant>,
-}
-
-/// Accept loop would live with `ServerBuilder`.
-///
-/// It's tasked with construct `Poll` instance and `WakerQueue` which would be distributed to
-/// `Accept` and `Worker`.
-///
-/// It would also listen to `ServerCommand` and push interests to `WakerQueue`.
-pub(crate) struct AcceptLoop {
-    srv: Option<Server>,
-    poll: Option<Poll>,
-    waker: WakerQueue,
-}
-
-impl AcceptLoop {
-    pub fn new(srv: Server) -> Self {
-        let poll = Poll::new().unwrap_or_else(|e| panic!("Can not create `mio::Poll`: {}", e));
-        let waker = WakerQueue::new(poll.registry())
-            .unwrap_or_else(|e| panic!("Can not create `mio::Waker`: {}", e));
-
-        Self {
-            srv: Some(srv),
-            poll: Some(poll),
-            waker,
-        }
-    }
-
-    pub(crate) fn waker_owned(&self) -> WakerQueue {
-        self.waker.clone()
-    }
-
-    pub fn wake(&self, i: WakerInterest) {
-        self.waker.wake(i);
-    }
-
-    pub(crate) fn start(
-        &mut self,
-        socks: Vec<(Token, MioListener)>,
-        handles: Vec<WorkerHandle>,
-    ) {
-        let srv = self.srv.take().expect("Can not re-use AcceptInfo");
-        let poll = self.poll.take().unwrap();
-        let waker = self.waker.clone();
-
-        Accept::start(poll, waker, socks, srv, handles);
-    }
+    timeout: Option<actix_rt::time::Instant>,
 }
 
 /// poll instance of the server.
-struct Accept {
+pub(crate) struct Accept {
     poll: Poll,
-    waker: WakerQueue,
-    handles: Vec<WorkerHandle>,
-    srv: Server,
+    waker_queue: WakerQueue,
+    handles: Vec<WorkerHandleAccept>,
+    srv: ServerHandle,
     next: usize,
-    backpressure: bool,
-}
-
-/// This function defines errors that are per-connection. Which basically
-/// means that if we get this error from `accept()` system call it means
-/// next connection might be ready to be accepted.
-///
-/// All other errors will incur a timeout before next `accept()` is performed.
-/// The timeout is useful to handle resource exhaustion errors like ENFILE
-/// and EMFILE. Otherwise, could enter into tight loop.
-fn connection_error(e: &io::Error) -> bool {
-    e.kind() == io::ErrorKind::ConnectionRefused
-        || e.kind() == io::ErrorKind::ConnectionAborted
-        || e.kind() == io::ErrorKind::ConnectionReset
+    avail: Availability,
+    /// use the smallest duration from sockets timeout.
+    timeout: Option<Duration>,
+    paused: bool,
 }
 
 impl Accept {
     pub(crate) fn start(
-        poll: Poll,
-        waker: WakerQueue,
-        socks: Vec<(Token, MioListener)>,
-        srv: Server,
-        handles: Vec<WorkerHandle>,
-    ) {
-        // Accept runs in its own thread and would want to spawn additional futures to current
-        // actix system.
-        let sys = System::current();
-        thread::Builder::new()
-            .name("actix-server accept loop".to_owned())
-            .spawn(move || {
-                System::set_current(sys);
-                let (mut accept, sockets) =
-                    Accept::new_with_sockets(poll, waker, socks, handles, srv);
-                accept.poll_with(sockets);
+        sockets: Vec<(usize, MioListener)>,
+        builder: &ServerBuilder,
+    ) -> io::Result<(WakerQueue, Vec<WorkerHandleServer>)> {
+        let handle_server = ServerHandle::new(builder.cmd_tx.clone());
+
+        // construct poll instance and its waker
+        let poll = Poll::new()?;
+        let waker_queue = WakerQueue::new(poll.registry())?;
+
+        // start workers and collect handles
+        let (handles_accept, handles_server) = (0..builder.threads)
+            .map(|idx| {
+                // clone service factories
+                let factories = builder
+                    .factories
+                    .iter()
+                    .map(|f| f.clone_factory())
+                    .collect::<Vec<_>>();
+
+                // start worker using service factories
+                ServerWorker::start(idx, factories, waker_queue.clone(), builder.worker_config)
             })
-            .unwrap();
+            .collect::<io::Result<Vec<_>>>()?
+            .into_iter()
+            .unzip();
+
+        let (mut accept, mut sockets) = Accept::new_with_sockets(
+            poll,
+            waker_queue.clone(),
+            sockets,
+            handles_accept,
+            handle_server,
+        )?;
+
+        thread::Builder::new()
+            .name("actix-server acceptor".to_owned())
+            .spawn(move || accept.poll_with(&mut sockets))
+            .map_err(|err| io::Error::new(io::ErrorKind::Other, err))?;
+
+        Ok((waker_queue, handles_server))
     }
 
     fn new_with_sockets(
         poll: Poll,
-        waker: WakerQueue,
-        socks: Vec<(Token, MioListener)>,
-        handles: Vec<WorkerHandle>,
-        srv: Server,
-    ) -> (Accept, Slab<ServerSocketInfo>) {
-        let mut sockets = Slab::new();
-        for (hnd_token, mut lst) in socks.into_iter() {
-            let addr = lst.local_addr();
+        waker_queue: WakerQueue,
+        sockets: Vec<(usize, MioListener)>,
+        accept_handles: Vec<WorkerHandleAccept>,
+        server_handle: ServerHandle,
+    ) -> io::Result<(Accept, Box<[ServerSocketInfo]>)> {
+        let sockets = sockets
+            .into_iter()
+            .map(|(token, mut lst)| {
+                // Start listening for incoming connections
+                poll.registry()
+                    .register(&mut lst, MioToken(token), Interest::READABLE)?;
 
-            let entry = sockets.vacant_entry();
-            let token = entry.key();
+                Ok(ServerSocketInfo {
+                    token,
+                    lst,
+                    timeout: None,
+                })
+            })
+            .collect::<io::Result<_>>()?;
 
-            // Start listening for incoming connections
-            poll.registry()
-                .register(&mut lst, MioToken(token), Interest::READABLE)
-                .unwrap_or_else(|e| panic!("Can not register io: {}", e));
+        let mut avail = Availability::default();
 
-            entry.insert(ServerSocketInfo {
-                addr,
-                token: hnd_token,
-                lst,
-                timeout: None,
-            });
-        }
+        // Assume all handles are avail at construct time.
+        avail.set_available_all(&accept_handles);
 
         let accept = Accept {
             poll,
-            waker,
-            handles,
-            srv,
+            waker_queue,
+            handles: accept_handles,
+            srv: server_handle,
             next: 0,
-            backpressure: false,
+            avail,
+            timeout: None,
+            paused: false,
         };
 
-        (accept, sockets)
+        Ok((accept, sockets))
     }
 
-    fn poll_with(&mut self, mut sockets: Slab<ServerSocketInfo>) {
-        let mut events = mio::Events::with_capacity(128);
+    /// blocking wait for readiness events triggered by mio
+    fn poll_with(&mut self, sockets: &mut [ServerSocketInfo]) {
+        let mut events = mio::Events::with_capacity(256);
 
         loop {
-            if let Err(e) = self.poll.poll(&mut events, None) {
+            if let Err(e) = self.poll.poll(&mut events, self.timeout) {
                 match e.kind() {
-                    std::io::ErrorKind::Interrupted => {
-                        continue;
-                    }
-                    _ => {
-                        panic!("Poll error: {}", e);
-                    }
+                    io::ErrorKind::Interrupted => {}
+                    _ => panic!("Poll error: {}", e),
                 }
             }
 
             for event in events.iter() {
                 let token = event.token();
                 match token {
-                    // This is a loop because interests for command from previous version was
-                    // a loop that would try to drain the command channel. It's yet unknown
-                    // if it's necessary/good practice to actively drain the waker queue.
-                    WAKER_TOKEN => 'waker: loop {
-                        // take guard with every iteration so no new interest can be added
-                        // until the current task is done.
-                        let mut guard = self.waker.guard();
-                        match guard.pop_front() {
-                            // worker notify it becomes available. we may want to recover
-                            // from backpressure.
-                            Some(WakerInterest::WorkerAvailable) => {
-                                drop(guard);
-                                self.maybe_backpressure(&mut sockets, false);
-                            }
-                            // a new worker thread is made and it's handle would be added to Accept
-                            Some(WakerInterest::Worker(handle)) => {
-                                drop(guard);
-                                // maybe we want to recover from a backpressure.
-                                self.maybe_backpressure(&mut sockets, false);
-                                self.handles.push(handle);
-                            }
-                            // got timer interest and it's time to try register socket(s) again
-                            Some(WakerInterest::Timer) => {
-                                drop(guard);
-                                self.process_timer(&mut sockets)
-                            }
-                            Some(WakerInterest::Pause) => {
-                                drop(guard);
-                                self.deregister_all(&mut sockets);
-                            }
-                            Some(WakerInterest::Resume) => {
-                                drop(guard);
-                                sockets.iter_mut().for_each(|(token, info)| {
-                                    self.register_logged(token, info);
-                                });
-                            }
-                            Some(WakerInterest::Stop) => {
-                                return self.deregister_all(&mut sockets);
-                            }
-                            // waker queue is drained
-                            None => {
-                                // Reset the WakerQueue before break so it does not grow infinitely
-                                WakerQueue::reset(&mut guard);
-                                break 'waker;
-                            }
+                    WAKER_TOKEN => {
+                        let exit = self.handle_waker(sockets);
+                        if exit {
+                            info!("Accept thread stopped");
+                            return;
                         }
-                    },
+                    }
                     _ => {
                         let token = usize::from(token);
-                        self.accept(&mut sockets, token);
+                        self.accept(sockets, token);
                     }
                 }
             }
+
+            // check for timeout and re-register sockets
+            self.process_timeout(sockets);
+        }
+    }
+
+    fn handle_waker(&mut self, sockets: &mut [ServerSocketInfo]) -> bool {
+        // This is a loop because interests for command from previous version was
+        // a loop that would try to drain the command channel. It's yet unknown
+        // if it's necessary/good practice to actively drain the waker queue.
+        loop {
+            // take guard with every iteration so no new interest can be added
+            // until the current task is done.
+            let mut guard = self.waker_queue.guard();
+            match guard.pop_front() {
+                // worker notify it becomes available.
+                Some(WakerInterest::WorkerAvailable(idx)) => {
+                    drop(guard);
+
+                    self.avail.set_available(idx, true);
+
+                    if !self.paused {
+                        self.accept_all(sockets);
+                    }
+                }
+
+                // a new worker thread is made and it's handle would be added to Accept
+                Some(WakerInterest::Worker(handle)) => {
+                    drop(guard);
+
+                    self.avail.set_available(handle.idx(), true);
+                    self.handles.push(handle);
+
+                    if !self.paused {
+                        self.accept_all(sockets);
+                    }
+                }
+
+                Some(WakerInterest::Pause) => {
+                    drop(guard);
+
+                    if !self.paused {
+                        self.paused = true;
+
+                        self.deregister_all(sockets);
+                    }
+                }
+
+                Some(WakerInterest::Resume) => {
+                    drop(guard);
+
+                    if self.paused {
+                        self.paused = false;
+
+                        sockets.iter_mut().for_each(|info| {
+                            self.register_logged(info);
+                        });
+
+                        self.accept_all(sockets);
+                    }
+                }
+
+                Some(WakerInterest::Stop) => {
+                    if !self.paused {
+                        self.deregister_all(sockets);
+                    }
+
+                    return true;
+                }
+
+                // waker queue is drained
+                None => {
+                    // Reset the WakerQueue before break so it does not grow infinitely
+                    WakerQueue::reset(&mut guard);
+
+                    return false;
+                }
+            }
         }
     }
 
-    fn process_timer(&self, sockets: &mut Slab<ServerSocketInfo>) {
-        let now = Instant::now();
-        sockets
-            .iter_mut()
-            // Only sockets that had an associated timeout were deregistered.
-            .filter(|(_, info)| info.timeout.is_some())
-            .for_each(|(token, info)| {
-                let inst = info.timeout.take().unwrap();
+    fn process_timeout(&mut self, sockets: &mut [ServerSocketInfo]) {
+        // always remove old timeouts
+        if self.timeout.take().is_some() {
+            let now = Instant::now();
 
-                if now < inst {
-                    info.timeout = Some(inst);
-                } else if !self.backpressure {
-                    self.register_logged(token, info);
+            sockets
+                .iter_mut()
+                // Only sockets that had an associated timeout were deregistered.
+                .filter(|info| info.timeout.is_some())
+                .for_each(|info| {
+                    let inst = info.timeout.take().unwrap();
+
+                    if now < inst {
+                        // still timed out; try to set new timeout
+                        info.timeout = Some(inst);
+                        self.set_timeout(inst - now);
+                    } else if !self.paused {
+                        // timeout expired; register socket again
+                        self.register_logged(info);
+                    }
+
+                    // Drop the timeout if server is paused and socket timeout is expired.
+                    // When server recovers from pause it will register all sockets without
+                    // a timeout value so this socket register will be delayed till then.
+                });
+        }
+    }
+
+    /// Update accept timeout with `duration` if it is shorter than current timeout.
+    fn set_timeout(&mut self, duration: Duration) {
+        match self.timeout {
+            Some(ref mut timeout) => {
+                if *timeout > duration {
+                    *timeout = duration;
                 }
-
-                // Drop the timeout if server is in backpressure and socket timeout is expired.
-                // When server recovers from backpressure it will register all sockets without
-                // a timeout value so this socket register will be delayed till then.
-            });
+            }
+            None => self.timeout = Some(duration),
+        }
     }
 
     #[cfg(not(target_os = "windows"))]
-    fn register(&self, token: usize, info: &mut ServerSocketInfo) -> io::Result<()> {
+    fn register(&self, info: &mut ServerSocketInfo) -> io::Result<()> {
+        let token = MioToken(info.token);
         self.poll
             .registry()
-            .register(&mut info.lst, MioToken(token), Interest::READABLE)
+            .register(&mut info.lst, token, Interest::READABLE)
     }
 
     #[cfg(target_os = "windows")]
-    fn register(&self, token: usize, info: &mut ServerSocketInfo) -> io::Result<()> {
+    fn register(&self, info: &mut ServerSocketInfo) -> io::Result<()> {
         // On windows, calling register without deregister cause an error.
         // See https://github.com/actix/actix-web/issues/905
         // Calling reregister seems to fix the issue.
+        let token = MioToken(info.token);
         self.poll
             .registry()
-            .register(&mut info.lst, mio::Token(token), Interest::READABLE)
+            .register(&mut info.lst, token, Interest::READABLE)
             .or_else(|_| {
-                self.poll.registry().reregister(
-                    &mut info.lst,
-                    mio::Token(token),
-                    Interest::READABLE,
-                )
+                self.poll
+                    .registry()
+                    .reregister(&mut info.lst, token, Interest::READABLE)
             })
     }
 
-    fn register_logged(&self, token: usize, info: &mut ServerSocketInfo) {
-        match self.register(token, info) {
-            Ok(_) => info!("Resume accepting connections on {}", info.addr),
+    fn register_logged(&self, info: &mut ServerSocketInfo) {
+        match self.register(info) {
+            Ok(_) => debug!("Resume accepting connections on {}", info.lst.local_addr()),
             Err(e) => error!("Can not register server socket {}", e),
         }
     }
 
-    fn deregister(&self, info: &mut ServerSocketInfo) -> io::Result<()> {
-        self.poll.registry().deregister(&mut info.lst)
-    }
-
     fn deregister_logged(&self, info: &mut ServerSocketInfo) {
-        match self.deregister(info) {
-            Ok(_) => info!("Paused accepting connections on {}", info.addr),
+        match self.poll.registry().deregister(&mut info.lst) {
+            Ok(_) => debug!("Paused accepting connections on {}", info.lst.local_addr()),
             Err(e) => {
                 error!("Can not deregister server socket {}", e)
             }
         }
     }
 
-    fn deregister_all(&self, sockets: &mut Slab<ServerSocketInfo>) {
-        sockets.iter_mut().for_each(|(_, info)| {
-            self.deregister_logged(info);
-        });
-    }
-
-    fn maybe_backpressure(&mut self, sockets: &mut Slab<ServerSocketInfo>, on: bool) {
-        // Only operate when server is in a different backpressure than the given flag.
-        if self.backpressure != on {
-            if on {
-                self.backpressure = true;
-                // TODO: figure out if timing out sockets can be safely de-registered twice.
-                self.deregister_all(sockets);
-            } else {
-                self.backpressure = false;
-                sockets
-                    .iter_mut()
-                    // Only operate on sockets without associated timeout.
-                    // Sockets with it will attempt to re-register when their timeout expires.
-                    .filter(|(_, info)| info.timeout.is_none())
-                    .for_each(|(token, info)| self.register_logged(token, info));
-            }
-        }
-    }
-
-    fn accept_one(&mut self, sockets: &mut Slab<ServerSocketInfo>, mut conn: Conn) {
-        if self.backpressure {
-            // send_connection would remove fault worker from handles.
-            // worst case here is conn get dropped after all handles are gone.
-            while !self.handles.is_empty() {
-                match self.send_connection(sockets, conn) {
-                    Ok(_) => return,
-                    Err(c) => conn = c,
-                }
-            }
-        } else {
-            // Do one round and try to send conn to all workers until it succeed.
-            // Start from self.next.
-            let mut idx = 0;
-            while idx < self.handles.len() {
-                idx += 1;
-                if self.handles[self.next].available() {
-                    match self.send_connection(sockets, conn) {
-                        Ok(_) => return,
-                        Err(c) => conn = c,
-                    }
-                } else {
-                    self.set_next();
-                }
-            }
-            // Sending Conn failed due to either all workers are in error or not available.
-            // Enter backpressure state and try again.
-            self.maybe_backpressure(sockets, true);
-            self.accept_one(sockets, conn);
-        }
-    }
-
-    // Set next worker handle that would accept work.
-    fn set_next(&mut self) {
-        self.next = (self.next + 1) % self.handles.len();
+    fn deregister_all(&self, sockets: &mut [ServerSocketInfo]) {
+        // This is a best effort implementation with following limitation:
+        //
+        // Every ServerSocketInfo with associated timeout will be skipped and it's timeout is
+        // removed in the process.
+        //
+        // Therefore WakerInterest::Pause followed by WakerInterest::Resume in a very short gap
+        // (less than 500ms) would cause all timing out ServerSocketInfos be re-registered before
+        // expected timing.
+        sockets
+            .iter_mut()
+            // Take all timeout.
+            // This is to prevent Accept::process_timer method re-register a socket afterwards.
+            .map(|info| (info.timeout.take(), info))
+            // Socket info with a timeout is already deregistered so skip them.
+            .filter(|(timeout, _)| timeout.is_none())
+            .for_each(|(_, info)| self.deregister_logged(info));
     }
 
     // Send connection to worker and handle error.
-    fn send_connection(
-        &mut self,
-        sockets: &mut Slab<ServerSocketInfo>,
-        conn: Conn,
-    ) -> Result<(), Conn> {
-        match self.handles[self.next].send(conn) {
+    fn send_connection(&mut self, conn: Conn) -> Result<(), Conn> {
+        let next = self.next();
+        match next.send(conn) {
             Ok(_) => {
+                // Increment counter of WorkerHandle.
+                // Set worker to unavailable with it hit max (Return false).
+                if !next.inc_counter() {
+                    let idx = next.idx();
+                    self.avail.set_available(idx, false);
+                }
                 self.set_next();
                 Ok(())
             }
             Err(conn) => {
-                // worker lost contact and could be gone. a message is sent to
-                // `ServerBuilder` future to notify it a new worker should be made.
-                // after that remove the fault worker and enter backpressure if necessary.
-                self.srv.worker_faulted(self.handles[self.next].idx);
-                self.handles.swap_remove(self.next);
+                // Worker thread is error and could be gone.
+                // Remove worker handle and notify `ServerBuilder`.
+                self.remove_next();
+
                 if self.handles.is_empty() {
                     error!("No workers");
-                    self.maybe_backpressure(sockets, true);
                     // All workers are gone and Conn is nowhere to be sent.
                     // Treat this situation as Ok and drop Conn.
                     return Ok(());
                 } else if self.handles.len() <= self.next {
                     self.next = 0;
                 }
+
                 Err(conn)
             }
         }
     }
 
-    fn accept(&mut self, sockets: &mut Slab<ServerSocketInfo>, token: usize) {
+    fn accept_one(&mut self, mut conn: Conn) {
         loop {
-            let info = sockets
-                .get_mut(token)
-                .expect("ServerSocketInfo is removed from Slab");
+            let next = self.next();
+            let idx = next.idx();
+
+            if self.avail.get_available(idx) {
+                match self.send_connection(conn) {
+                    Ok(_) => return,
+                    Err(c) => conn = c,
+                }
+            } else {
+                self.avail.set_available(idx, false);
+                self.set_next();
+
+                if !self.avail.available() {
+                    while let Err(c) = self.send_connection(conn) {
+                        conn = c;
+                    }
+                    return;
+                }
+            }
+        }
+    }
+
+    fn accept(&mut self, sockets: &mut [ServerSocketInfo], token: usize) {
+        while self.avail.available() {
+            let info = &mut sockets[token];
 
             match info.lst.accept() {
                 Ok(io) => {
-                    let msg = Conn {
-                        io,
-                        token: info.token,
-                    };
-                    self.accept_one(sockets, msg);
+                    let conn = Conn { io, token };
+                    self.accept_one(conn);
                 }
                 Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => return,
                 Err(ref e) if connection_error(e) => continue,
@@ -418,17 +408,53 @@ impl Accept {
                     // the poll would need it mark which socket and when it's
                     // listener should be registered
                     info.timeout = Some(Instant::now() + Duration::from_millis(500));
-
-                    // after the sleep a Timer interest is sent to Accept Poll
-                    let waker = self.waker.clone();
-                    System::current().arbiter().spawn(async move {
-                        sleep(Duration::from_millis(510)).await;
-                        waker.wake(WakerInterest::Timer);
-                    });
+                    self.set_timeout(TIMEOUT_DURATION_ON_ERROR);
 
                     return;
                 }
             };
         }
     }
+
+    fn accept_all(&mut self, sockets: &mut [ServerSocketInfo]) {
+        sockets
+            .iter_mut()
+            .map(|info| info.token)
+            .collect::<Vec<_>>()
+            .into_iter()
+            .for_each(|idx| self.accept(sockets, idx))
+    }
+
+    #[inline(always)]
+    fn next(&self) -> &WorkerHandleAccept {
+        &self.handles[self.next]
+    }
+
+    /// Set next worker handle that would accept connection.
+    #[inline(always)]
+    fn set_next(&mut self) {
+        self.next = (self.next + 1) % self.handles.len();
+    }
+
+    /// Remove next worker handle that fail to accept connection.
+    fn remove_next(&mut self) {
+        let handle = self.handles.swap_remove(self.next);
+        let idx = handle.idx();
+        // A message is sent to `ServerBuilder` future to notify it a new worker
+        // should be made.
+        self.srv.worker_faulted(idx);
+        self.avail.set_available(idx, false);
+    }
+}
+
+/// This function defines errors that are per-connection; if we get this error from the `accept()`
+/// system call it means the next connection might be ready to be accepted.
+///
+/// All other errors will incur a timeout before next `accept()` call is attempted. The timeout is
+/// useful to handle resource exhaustion errors like `ENFILE` and `EMFILE`. Otherwise, it could
+/// enter into a temporary spin loop.
+fn connection_error(e: &io::Error) -> bool {
+    e.kind() == io::ErrorKind::ConnectionRefused
+        || e.kind() == io::ErrorKind::ConnectionAborted
+        || e.kind() == io::ErrorKind::ConnectionReset
 }

actix-server/src/availability.rs

@@ -0,0 +1,121 @@
+use crate::worker::WorkerHandleAccept;
+
+/// Array of u128 with every bit as marker for a worker handle's availability.
+#[derive(Debug, Default)]
+pub(crate) struct Availability([u128; 4]);
+
+impl Availability {
+    /// Check if any worker handle is available
+    #[inline(always)]
+    pub(crate) fn available(&self) -> bool {
+        self.0.iter().any(|a| *a != 0)
+    }
+
+    /// Check if worker handle is available by index
+    #[inline(always)]
+    pub(crate) fn get_available(&self, idx: usize) -> bool {
+        let (offset, idx) = Self::offset(idx);
+
+        self.0[offset] & (1 << idx as u128) != 0
+    }
+
+    /// Set worker handle available state by index.
+    pub(crate) fn set_available(&mut self, idx: usize, avail: bool) {
+        let (offset, idx) = Self::offset(idx);
+
+        let off = 1 << idx as u128;
+        if avail {
+            self.0[offset] |= off;
+        } else {
+            self.0[offset] &= !off
+        }
+    }
+
+    /// Set all worker handle to available state.
+    /// This would result in a re-check on all workers' availability.
+    pub(crate) fn set_available_all(&mut self, handles: &[WorkerHandleAccept]) {
+        handles.iter().for_each(|handle| {
+            self.set_available(handle.idx(), true);
+        })
+    }
+
+    /// Get offset and adjusted index of given worker handle index.
+    pub(crate) fn offset(idx: usize) -> (usize, usize) {
+        if idx < 128 {
+            (0, idx)
+        } else if idx < 128 * 2 {
+            (1, idx - 128)
+        } else if idx < 128 * 3 {
+            (2, idx - 128 * 2)
+        } else if idx < 128 * 4 {
+            (3, idx - 128 * 3)
+        } else {
+            panic!("Max WorkerHandle count is 512")
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn single(aval: &mut Availability, idx: usize) {
+        aval.set_available(idx, true);
+        assert!(aval.available());
+
+        aval.set_available(idx, true);
+
+        aval.set_available(idx, false);
+        assert!(!aval.available());
+
+        aval.set_available(idx, false);
+        assert!(!aval.available());
+    }
+
+    fn multi(aval: &mut Availability, mut idx: Vec<usize>) {
+        idx.iter().for_each(|idx| aval.set_available(*idx, true));
+
+        assert!(aval.available());
+
+        while let Some(idx) = idx.pop() {
+            assert!(aval.available());
+            aval.set_available(idx, false);
+        }
+
+        assert!(!aval.available());
+    }
+
+    #[test]
+    fn availability() {
+        let mut aval = Availability::default();
+
+        single(&mut aval, 1);
+        single(&mut aval, 128);
+        single(&mut aval, 256);
+        single(&mut aval, 511);
+
+        let idx = (0..511).filter(|i| i % 3 == 0 && i % 5 == 0).collect();
+
+        multi(&mut aval, idx);
+
+        multi(&mut aval, (0..511).collect())
+    }
+
+    #[test]
+    #[should_panic]
+    fn overflow() {
+        let mut aval = Availability::default();
+        single(&mut aval, 512);
+    }
+
+    #[test]
+    fn pin_point() {
+        let mut aval = Availability::default();
+
+        aval.set_available(438, true);
+
+        aval.set_available(479, true);
+
+        assert_eq!(aval.0[3], 1 << (438 - 384) | 1 << (479 - 384));
+    }
+}

actix-server/src/builder.rs

@@ -1,42 +1,31 @@
-use std::{
-    future::Future,
-    io, mem,
-    pin::Pin,
-    task::{Context, Poll},
-    time::Duration,
+use std::{io, time::Duration};
+
+use actix_rt::net::TcpStream;
+use log::{info, trace};
+use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender};
+
+use crate::{
+    server::ServerCommand,
+    service::{InternalServiceFactory, ServiceFactory, StreamNewService},
+    socket::{
+        create_mio_tcp_listener, MioListener, MioTcpListener, StdTcpListener, ToSocketAddrs,
+    },
+    worker::ServerWorkerConfig,
+    Server,
 };
 
-use actix_rt::{self as rt, net::TcpStream, time::sleep, System};
-use log::{error, info};
-use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver};
-use tokio::sync::oneshot;
-
-use crate::accept::AcceptLoop;
-use crate::config::{ConfiguredService, ServiceConfig};
-use crate::server::{Server, ServerCommand};
-use crate::service::{InternalServiceFactory, ServiceFactory, StreamNewService};
-use crate::signals::{Signal, Signals};
-use crate::socket::{MioListener, StdSocketAddr, StdTcpListener, ToSocketAddrs};
-use crate::socket::{MioTcpListener, MioTcpSocket};
-use crate::waker_queue::{WakerInterest, WakerQueue};
-use crate::worker::{self, ServerWorker, ServerWorkerConfig, WorkerAvailability, WorkerHandle};
-use crate::{join_all, Token};
-
-/// Server builder
+/// [Server] builder.
 pub struct ServerBuilder {
-    threads: usize,
-    token: Token,
-    backlog: u32,
-    handles: Vec<(usize, WorkerHandle)>,
-    services: Vec<Box<dyn InternalServiceFactory>>,
-    sockets: Vec<(Token, String, MioListener)>,
-    accept: AcceptLoop,
-    exit: bool,
-    no_signals: bool,
-    cmd: UnboundedReceiver<ServerCommand>,
-    server: Server,
-    notify: Vec<oneshot::Sender<()>>,
-    worker_config: ServerWorkerConfig,
+    pub(crate) threads: usize,
+    pub(crate) token: usize,
+    pub(crate) backlog: u32,
+    pub(crate) factories: Vec<Box<dyn InternalServiceFactory>>,
+    pub(crate) sockets: Vec<(usize, String, MioListener)>,
+    pub(crate) exit: bool,
+    pub(crate) listen_os_signals: bool,
+    pub(crate) cmd_tx: UnboundedSender<ServerCommand>,
+    pub(crate) cmd_rx: UnboundedReceiver<ServerCommand>,
+    pub(crate) worker_config: ServerWorkerConfig,
 }
 
 impl Default for ServerBuilder {
@@ -48,30 +37,26 @@ impl Default for ServerBuilder {
 impl ServerBuilder {
     /// Create new Server builder instance
     pub fn new() -> ServerBuilder {
-        let (tx, rx) = unbounded_channel();
-        let server = Server::new(tx);
+        let (cmd_tx, cmd_rx) = unbounded_channel();
 
         ServerBuilder {
             threads: num_cpus::get(),
-            token: Token::default(),
-            handles: Vec::new(),
-            services: Vec::new(),
+            token: 0,
+            factories: Vec::new(),
             sockets: Vec::new(),
-            accept: AcceptLoop::new(server.clone()),
             backlog: 2048,
             exit: false,
-            no_signals: false,
-            cmd: rx,
-            notify: Vec::new(),
-            server,
+            listen_os_signals: true,
+            cmd_tx,
+            cmd_rx,
             worker_config: ServerWorkerConfig::default(),
         }
     }
 
     /// Set number of workers to start.
     ///
-    /// By default server uses number of available logical cpu as workers
-    /// count. Workers must be greater than 0.
+    /// By default server uses number of available logical CPU as workers count. Workers must be
+    /// greater than 0.
     pub fn workers(mut self, num: usize) -> Self {
         assert_ne!(num, 0, "workers must be greater than 0");
         self.threads = num;
@@ -98,10 +83,9 @@ impl ServerBuilder {
 
     /// Set the maximum number of pending connections.
     ///
-    /// This refers to the number of clients that can be waiting to be served.
-    /// Exceeding this number results in the client getting an error when
-    /// attempting to connect. It should only affect servers under significant
-    /// load.
+    /// This refers to the number of clients that can be waiting to be served. Exceeding this number
+    /// results in the client getting an error when attempting to connect. It should only affect
+    /// servers under significant load.
     ///
     /// Generally set in the 64-2048 range. Default value is 2048.
     ///
@@ -113,24 +97,30 @@ impl ServerBuilder {
 
     /// Sets the maximum per-worker number of concurrent connections.
     ///
-    /// All socket listeners will stop accepting connections when this limit is
-    /// reached for each worker.
+    /// All socket listeners will stop accepting connections when this limit is reached for
+    /// each worker.
     ///
     /// By default max connections is set to a 25k per worker.
-    pub fn maxconn(self, num: usize) -> Self {
-        worker::max_concurrent_connections(num);
+    pub fn max_concurrent_connections(mut self, num: usize) -> Self {
+        self.worker_config.max_concurrent_connections(num);
         self
     }
 
-    /// Stop Actix system.
+    #[doc(hidden)]
+    #[deprecated(since = "2.0.0", note = "Renamed to `max_concurrent_connections`.")]
+    pub fn maxconn(self, num: usize) -> Self {
+        self.max_concurrent_connections(num)
+    }
+
+    /// Stop Actix `System` after server shutdown.
     pub fn system_exit(mut self) -> Self {
         self.exit = true;
         self
     }
 
-    /// Disable signal handling.
+    /// Disable OS signal handling.
     pub fn disable_signals(mut self) -> Self {
-        self.no_signals = true;
+        self.listen_os_signals = false;
         self
     }
 
@@ -146,32 +136,6 @@ impl ServerBuilder {
         self
     }
 
-    /// Execute external configuration as part of the server building process.
-    ///
-    /// This function is useful for moving parts of configuration to a different module or
-    /// even library.
-    pub fn configure<F>(mut self, f: F) -> io::Result<ServerBuilder>
-    where
-        F: Fn(&mut ServiceConfig) -> io::Result<()>,
-    {
-        let mut cfg = ServiceConfig::new(self.threads, self.backlog);
-
-        f(&mut cfg)?;
-
-        if let Some(apply) = cfg.apply {
-            let mut srv = ConfiguredService::new(apply);
-            for (name, lst) in cfg.services {
-                let token = self.token.next();
-                srv.stream(token, name.clone(), lst.local_addr()?);
-                self.sockets.push((token, name, MioListener::Tcp(lst)));
-            }
-            self.services.push(Box::new(srv));
-        }
-        self.threads = cfg.threads;
-
-        Ok(self)
-    }
-
     /// Add new service to the server.
     pub fn bind<F, U, N: AsRef<str>>(mut self, name: N, addr: U, factory: F) -> io::Result<Self>
     where
@@ -180,9 +144,11 @@ impl ServerBuilder {
     {
         let sockets = bind_addr(addr, self.backlog)?;
 
+        trace!("binding server to: {:?}", &sockets);
+
         for lst in sockets {
-            let token = self.token.next();
-            self.services.push(StreamNewService::create(
+            let token = self.next_token();
+            self.factories.push(StreamNewService::create(
                 name.as_ref().to_string(),
                 token,
                 factory.clone(),
@@ -191,11 +157,57 @@ impl ServerBuilder {
             self.sockets
                 .push((token, name.as_ref().to_string(), MioListener::Tcp(lst)));
         }
+
         Ok(self)
     }
 
+    /// Add new service to the server.
+    pub fn listen<F, N: AsRef<str>>(
+        mut self,
+        name: N,
+        lst: StdTcpListener,
+        factory: F,
+    ) -> io::Result<Self>
+    where
+        F: ServiceFactory<TcpStream>,
+    {
+        lst.set_nonblocking(true)?;
+        let addr = lst.local_addr()?;
+
+        let token = self.next_token();
+        self.factories.push(StreamNewService::create(
+            name.as_ref().to_string(),
+            token,
+            factory,
+            addr,
+        ));
+
+        self.sockets
+            .push((token, name.as_ref().to_string(), MioListener::from(lst)));
+
+        Ok(self)
+    }
+
+    /// Starts processing incoming connections and return server controller.
+    pub fn run(self) -> Server {
+        if self.sockets.is_empty() {
+            panic!("Server should have at least one bound socket");
+        } else {
+            info!("Starting {} workers", self.threads);
+            Server::new(self)
+        }
+    }
+
+    fn next_token(&mut self) -> usize {
+        let token = self.token;
+        self.token += 1;
+        token
+    }
+}
+
+#[cfg(unix)]
+impl ServerBuilder {
     /// Add new unix domain service to the server.
-    #[cfg(unix)]
     pub fn bind_uds<F, U, N>(self, name: N, addr: U, factory: F) -> io::Result<Self>
     where
         F: ServiceFactory<actix_rt::net::UnixStream>,
@@ -216,9 +228,8 @@ impl ServerBuilder {
     }
 
     /// Add new unix domain service to the server.
-    /// Useful when running as a systemd service and
-    /// a socket FD can be acquired using the systemd crate.
-    #[cfg(unix)]
+    ///
+    /// Useful when running as a systemd service and a socket FD is acquired externally.
     pub fn listen_uds<F, N: AsRef<str>>(
         mut self,
         name: N,
@@ -230,9 +241,10 @@ impl ServerBuilder {
     {
         use std::net::{IpAddr, Ipv4Addr};
         lst.set_nonblocking(true)?;
-        let token = self.token.next();
-        let addr = StdSocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-        self.services.push(StreamNewService::create(
+        let token = self.next_token();
+        let addr =
+            crate::socket::StdSocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
+        self.factories.push(StreamNewService::create(
             name.as_ref().to_string(),
             token,
             factory,
@@ -242,221 +254,6 @@ impl ServerBuilder {
             .push((token, name.as_ref().to_string(), MioListener::from(lst)));
         Ok(self)
     }
-
-    /// Add new service to the server.
-    pub fn listen<F, N: AsRef<str>>(
-        mut self,
-        name: N,
-        lst: StdTcpListener,
-        factory: F,
-    ) -> io::Result<Self>
-    where
-        F: ServiceFactory<TcpStream>,
-    {
-        lst.set_nonblocking(true)?;
-        let addr = lst.local_addr()?;
-
-        let token = self.token.next();
-        self.services.push(StreamNewService::create(
-            name.as_ref().to_string(),
-            token,
-            factory,
-            addr,
-        ));
-
-        self.sockets
-            .push((token, name.as_ref().to_string(), MioListener::from(lst)));
-
-        Ok(self)
-    }
-
-    /// Starts processing incoming connections and return server controller.
-    pub fn run(mut self) -> Server {
-        if self.sockets.is_empty() {
-            panic!("Server should have at least one bound socket");
-        } else {
-            info!("Starting {} workers", self.threads);
-
-            // start workers
-            let handles = (0..self.threads)
-                .map(|idx| {
-                    let handle = self.start_worker(idx, self.accept.waker_owned());
-                    self.handles.push((idx, handle.clone()));
-
-                    handle
-                })
-                .collect();
-
-            // start accept thread
-            for sock in &self.sockets {
-                info!("Starting \"{}\" service on {}", sock.1, sock.2);
-            }
-            self.accept.start(
-                mem::take(&mut self.sockets)
-                    .into_iter()
-                    .map(|t| (t.0, t.2))
-                    .collect(),
-                handles,
-            );
-
-            // handle signals
-            if !self.no_signals {
-                Signals::start(self.server.clone());
-            }
-
-            // start http server actor
-            let server = self.server.clone();
-            rt::spawn(self);
-            server
-        }
-    }
-
-    fn start_worker(&self, idx: usize, waker: WakerQueue) -> WorkerHandle {
-        let avail = WorkerAvailability::new(waker);
-        let services = self.services.iter().map(|v| v.clone_factory()).collect();
-
-        ServerWorker::start(idx, services, avail, self.worker_config)
-    }
-
-    fn handle_cmd(&mut self, item: ServerCommand) {
-        match item {
-            ServerCommand::Pause(tx) => {
-                self.accept.wake(WakerInterest::Pause);
-                let _ = tx.send(());
-            }
-            ServerCommand::Resume(tx) => {
-                self.accept.wake(WakerInterest::Resume);
-                let _ = tx.send(());
-            }
-            ServerCommand::Signal(sig) => {
-                // Signals support
-                // Handle `SIGINT`, `SIGTERM`, `SIGQUIT` signals and stop actix system
-                match sig {
-                    Signal::Int => {
-                        info!("SIGINT received, exiting");
-                        self.exit = true;
-                        self.handle_cmd(ServerCommand::Stop {
-                            graceful: false,
-                            completion: None,
-                        })
-                    }
-                    Signal::Term => {
-                        info!("SIGTERM received, stopping");
-                        self.exit = true;
-                        self.handle_cmd(ServerCommand::Stop {
-                            graceful: true,
-                            completion: None,
-                        })
-                    }
-                    Signal::Quit => {
-                        info!("SIGQUIT received, exiting");
-                        self.exit = true;
-                        self.handle_cmd(ServerCommand::Stop {
-                            graceful: false,
-                            completion: None,
-                        })
-                    }
-                    _ => (),
-                }
-            }
-            ServerCommand::Notify(tx) => {
-                self.notify.push(tx);
-            }
-            ServerCommand::Stop {
-                graceful,
-                completion,
-            } => {
-                let exit = self.exit;
-
-                // stop accept thread
-                self.accept.wake(WakerInterest::Stop);
-                let notify = std::mem::take(&mut self.notify);
-
-                // stop workers
-                if !self.handles.is_empty() && graceful {
-                    let iter = self
-                        .handles
-                        .iter()
-                        .map(move |worker| worker.1.stop(graceful))
-                        .collect();
-
-                    let fut = join_all(iter);
-
-                    rt::spawn(async move {
-                        let _ = fut.await;
-                        if let Some(tx) = completion {
-                            let _ = tx.send(());
-                        }
-                        for tx in notify {
-                            let _ = tx.send(());
-                        }
-                        if exit {
-                            rt::spawn(async {
-                                sleep(Duration::from_millis(300)).await;
-                                System::current().stop();
-                            });
-                        }
-                    });
-                } else {
-                    // we need to stop system if server was spawned
-                    if self.exit {
-                        rt::spawn(async {
-                            sleep(Duration::from_millis(300)).await;
-                            System::current().stop();
-                        });
-                    }
-                    if let Some(tx) = completion {
-                        let _ = tx.send(());
-                    }
-                    for tx in notify {
-                        let _ = tx.send(());
-                    }
-                }
-            }
-            ServerCommand::WorkerFaulted(idx) => {
-                let mut found = false;
-                for i in 0..self.handles.len() {
-                    if self.handles[i].0 == idx {
-                        self.handles.swap_remove(i);
-                        found = true;
-                        break;
-                    }
-                }
-
-                if found {
-                    error!("Worker has died {:?}, restarting", idx);
-
-                    let mut new_idx = self.handles.len();
-                    'found: loop {
-                        for i in 0..self.handles.len() {
-                            if self.handles[i].0 == new_idx {
-                                new_idx += 1;
-                                continue 'found;
-                            }
-                        }
-                        break;
-                    }
-
-                    let handle = self.start_worker(new_idx, self.accept.waker_owned());
-                    self.handles.push((new_idx, handle.clone()));
-                    self.accept.wake(WakerInterest::Worker(handle));
-                }
-            }
-        }
-    }
-}
-
-impl Future for ServerBuilder {
-    type Output = ();
-
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        loop {
-            match Pin::new(&mut self.cmd).poll_recv(cx) {
-                Poll::Ready(Some(it)) => self.as_mut().get_mut().handle_cmd(it),
-                _ => return Poll::Pending,
-            }
-        }
-    }
 }
 
 pub(super) fn bind_addr<S: ToSocketAddrs>(
@@ -464,39 +261,26 @@ pub(super) fn bind_addr<S: ToSocketAddrs>(
     backlog: u32,
 ) -> io::Result<Vec<MioTcpListener>> {
     let mut err = None;
-    let mut succ = false;
+    let mut success = false;
     let mut sockets = Vec::new();
     for addr in addr.to_socket_addrs()? {
-        match create_tcp_listener(addr, backlog) {
+        match create_mio_tcp_listener(addr, backlog) {
             Ok(lst) => {
-                succ = true;
+                success = true;
                 sockets.push(lst);
             }
             Err(e) => err = Some(e),
         }
     }
 
-    if !succ {
-        if let Some(e) = err.take() {
-            Err(e)
-        } else {
-            Err(io::Error::new(
-                io::ErrorKind::Other,
-                "Can not bind to address.",
-            ))
-        }
-    } else {
+    if success {
         Ok(sockets)
+    } else if let Some(err) = err.take() {
+        Err(err)
+    } else {
+        Err(io::Error::new(
+            io::ErrorKind::Other,
+            "Can not bind to address.",
+        ))
     }
 }
-
-fn create_tcp_listener(addr: StdSocketAddr, backlog: u32) -> io::Result<MioTcpListener> {
-    let socket = match addr {
-        StdSocketAddr::V4(_) => MioTcpSocket::new_v4()?,
-        StdSocketAddr::V6(_) => MioTcpSocket::new_v6()?,
-    };
-
-    socket.set_reuseaddr(true)?;
-    socket.bind(addr)?;
-    socket.listen(backlog)
-}

actix-server/src/config.rs

@@ -1,287 +0,0 @@
-use std::collections::HashMap;
-use std::future::Future;
-use std::{fmt, io};
-
-use actix_rt::net::TcpStream;
-use actix_service::{
-    fn_service, IntoServiceFactory as IntoBaseServiceFactory,
-    ServiceFactory as BaseServiceFactory,
-};
-use actix_utils::counter::CounterGuard;
-use futures_core::future::LocalBoxFuture;
-use log::error;
-
-use crate::builder::bind_addr;
-use crate::service::{BoxedServerService, InternalServiceFactory, StreamService};
-use crate::socket::{MioStream, MioTcpListener, StdSocketAddr, StdTcpListener, ToSocketAddrs};
-use crate::{ready, Token};
-
-pub struct ServiceConfig {
-    pub(crate) services: Vec<(String, MioTcpListener)>,
-    pub(crate) apply: Option<Box<dyn ServiceRuntimeConfiguration>>,
-    pub(crate) threads: usize,
-    pub(crate) backlog: u32,
-}
-
-impl ServiceConfig {
-    pub(super) fn new(threads: usize, backlog: u32) -> ServiceConfig {
-        ServiceConfig {
-            threads,
-            backlog,
-            services: Vec::new(),
-            apply: None,
-        }
-    }
-
-    /// Set number of workers to start.
-    ///
-    /// By default server uses number of available logical cpu as workers
-    /// count.
-    pub fn workers(&mut self, num: usize) {
-        self.threads = num;
-    }
-
-    /// Add new service to server
-    pub fn bind<U, N: AsRef<str>>(&mut self, name: N, addr: U) -> io::Result<&mut Self>
-    where
-        U: ToSocketAddrs,
-    {
-        let sockets = bind_addr(addr, self.backlog)?;
-
-        for lst in sockets {
-            self._listen(name.as_ref(), lst);
-        }
-
-        Ok(self)
-    }
-
-    /// Add new service to server
-    pub fn listen<N: AsRef<str>>(&mut self, name: N, lst: StdTcpListener) -> &mut Self {
-        self._listen(name, MioTcpListener::from_std(lst))
-    }
-
-    /// Register service configuration function. This function get called
-    /// during worker runtime configuration. It get executed in worker thread.
-    pub fn apply<F>(&mut self, f: F) -> io::Result<()>
-    where
-        F: Fn(&mut ServiceRuntime) + Send + Clone + 'static,
-    {
-        self.apply = Some(Box::new(f));
-        Ok(())
-    }
-
-    fn _listen<N: AsRef<str>>(&mut self, name: N, lst: MioTcpListener) -> &mut Self {
-        if self.apply.is_none() {
-            self.apply = Some(Box::new(not_configured));
-        }
-        self.services.push((name.as_ref().to_string(), lst));
-        self
-    }
-}
-
-pub(super) struct ConfiguredService {
-    rt: Box<dyn ServiceRuntimeConfiguration>,
-    names: HashMap<Token, (String, StdSocketAddr)>,
-    topics: HashMap<String, Token>,
-    services: Vec<Token>,
-}
-
-impl ConfiguredService {
-    pub(super) fn new(rt: Box<dyn ServiceRuntimeConfiguration>) -> Self {
-        ConfiguredService {
-            rt,
-            names: HashMap::new(),
-            topics: HashMap::new(),
-            services: Vec::new(),
-        }
-    }
-
-    pub(super) fn stream(&mut self, token: Token, name: String, addr: StdSocketAddr) {
-        self.names.insert(token, (name.clone(), addr));
-        self.topics.insert(name, token);
-        self.services.push(token);
-    }
-}
-
-impl InternalServiceFactory for ConfiguredService {
-    fn name(&self, token: Token) -> &str {
-        &self.names[&token].0
-    }
-
-    fn clone_factory(&self) -> Box<dyn InternalServiceFactory> {
-        Box::new(Self {
-            rt: self.rt.clone(),
-            names: self.names.clone(),
-            topics: self.topics.clone(),
-            services: self.services.clone(),
-        })
-    }
-
-    fn create(&self) -> LocalBoxFuture<'static, Result<Vec<(Token, BoxedServerService)>, ()>> {
-        // configure services
-        let mut rt = ServiceRuntime::new(self.topics.clone());
-        self.rt.configure(&mut rt);
-        rt.validate();
-        let mut names = self.names.clone();
-        let tokens = self.services.clone();
-
-        // construct services
-        Box::pin(async move {
-            let mut services = rt.services;
-            // TODO: Proper error handling here
-            for f in rt.onstart.into_iter() {
-                f.await;
-            }
-            let mut res = vec![];
-            for token in tokens {
-                if let Some(srv) = services.remove(&token) {
-                    let newserv = srv.new_service(());
-                    match newserv.await {
-                        Ok(serv) => {
-                            res.push((token, serv));
-                        }
-                        Err(_) => {
-                            error!("Can not construct service");
-                            return Err(());
-                        }
-                    }
-                } else {
-                    let name = names.remove(&token).unwrap().0;
-                    res.push((
-                        token,
-                        Box::new(StreamService::new(fn_service(move |_: TcpStream| {
-                            error!("Service {:?} is not configured", name);
-                            ready::<Result<_, ()>>(Ok(()))
-                        }))),
-                    ));
-                };
-            }
-            Ok(res)
-        })
-    }
-}
-
-pub(super) trait ServiceRuntimeConfiguration: Send {
-    fn clone(&self) -> Box<dyn ServiceRuntimeConfiguration>;
-
-    fn configure(&self, rt: &mut ServiceRuntime);
-}
-
-impl<F> ServiceRuntimeConfiguration for F
-where
-    F: Fn(&mut ServiceRuntime) + Send + Clone + 'static,
-{
-    fn clone(&self) -> Box<dyn ServiceRuntimeConfiguration> {
-        Box::new(self.clone())
-    }
-
-    fn configure(&self, rt: &mut ServiceRuntime) {
-        (self)(rt)
-    }
-}
-
-fn not_configured(_: &mut ServiceRuntime) {
-    error!("Service is not configured");
-}
-
-pub struct ServiceRuntime {
-    names: HashMap<String, Token>,
-    services: HashMap<Token, BoxedNewService>,
-    onstart: Vec<LocalBoxFuture<'static, ()>>,
-}
-
-impl ServiceRuntime {
-    fn new(names: HashMap<String, Token>) -> Self {
-        ServiceRuntime {
-            names,
-            services: HashMap::new(),
-            onstart: Vec::new(),
-        }
-    }
-
-    fn validate(&self) {
-        for (name, token) in &self.names {
-            if !self.services.contains_key(&token) {
-                error!("Service {:?} is not configured", name);
-            }
-        }
-    }
-
-    /// Register service.
-    ///
-    /// Name of the service must be registered during configuration stage with
-    /// *ServiceConfig::bind()* or *ServiceConfig::listen()* methods.
-    pub fn service<T, F>(&mut self, name: &str, service: F)
-    where
-        F: IntoBaseServiceFactory<T, TcpStream>,
-        T: BaseServiceFactory<TcpStream, Config = ()> + 'static,
-        T::Future: 'static,
-        T::Service: 'static,
-        T::InitError: fmt::Debug,
-    {
-        // let name = name.to_owned();
-        if let Some(token) = self.names.get(name) {
-            self.services.insert(
-                *token,
-                Box::new(ServiceFactory {
-                    inner: service.into_factory(),
-                }),
-            );
-        } else {
-            panic!("Unknown service: {:?}", name);
-        }
-    }
-
-    /// Execute future before services initialization.
-    pub fn on_start<F>(&mut self, fut: F)
-    where
-        F: Future<Output = ()> + 'static,
-    {
-        self.onstart.push(Box::pin(fut))
-    }
-}
-
-type BoxedNewService = Box<
-    dyn BaseServiceFactory<
-        (Option<CounterGuard>, MioStream),
-        Response = (),
-        Error = (),
-        InitError = (),
-        Config = (),
-        Service = BoxedServerService,
-        Future = LocalBoxFuture<'static, Result<BoxedServerService, ()>>,
-    >,
->;
-
-struct ServiceFactory<T> {
-    inner: T,
-}
-
-impl<T> BaseServiceFactory<(Option<CounterGuard>, MioStream)> for ServiceFactory<T>
-where
-    T: BaseServiceFactory<TcpStream, Config = ()>,
-    T::Future: 'static,
-    T::Service: 'static,
-    T::Error: 'static,
-    T::InitError: fmt::Debug + 'static,
-{
-    type Response = ();
-    type Error = ();
-    type Config = ();
-    type Service = BoxedServerService;
-    type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<BoxedServerService, ()>>;
-
-    fn new_service(&self, _: ()) -> Self::Future {
-        let fut = self.inner.new_service(());
-        Box::pin(async move {
-            match fut.await {
-                Ok(s) => Ok(Box::new(StreamService::new(s)) as BoxedServerService),
-                Err(e) => {
-                    error!("Can not construct service: {:?}", e);
-                    Err(())
-                }
-            }
-        })
-    }
-}

actix-server/src/handle.rs

@@ -0,0 +1,55 @@
+use std::future::Future;
+
+use tokio::sync::{mpsc::UnboundedSender, oneshot};
+
+use crate::server::ServerCommand;
+
+/// Server handle.
+#[derive(Debug, Clone)]
+pub struct ServerHandle {
+    cmd_tx: UnboundedSender<ServerCommand>,
+}
+
+impl ServerHandle {
+    pub(crate) fn new(cmd_tx: UnboundedSender<ServerCommand>) -> Self {
+        ServerHandle { cmd_tx }
+    }
+
+    pub(crate) fn worker_faulted(&self, idx: usize) {
+        let _ = self.cmd_tx.send(ServerCommand::WorkerFaulted(idx));
+    }
+
+    /// Pause accepting incoming connections.
+    ///
+    /// May drop socket pending connection. All open connections remain active.
+    pub fn pause(&self) -> impl Future<Output = ()> {
+        let (tx, rx) = oneshot::channel();
+        let _ = self.cmd_tx.send(ServerCommand::Pause(tx));
+        async {
+            let _ = rx.await;
+        }
+    }
+
+    /// Resume accepting incoming connections.
+    pub fn resume(&self) -> impl Future<Output = ()> {
+        let (tx, rx) = oneshot::channel();
+        let _ = self.cmd_tx.send(ServerCommand::Resume(tx));
+        async {
+            let _ = rx.await;
+        }
+    }
+
+    /// Stop incoming connection processing, stop all workers and exit.
+    pub fn stop(&self, graceful: bool) -> impl Future<Output = ()> {
+        let (tx, rx) = oneshot::channel();
+
+        let _ = self.cmd_tx.send(ServerCommand::Stop {
+            graceful,
+            completion: Some(tx),
+        });
+
+        async {
+            let _ = rx.await;
+        }
+    }
+}

actix-server/src/join_all.rs

@@ -0,0 +1,78 @@
+use std::{
+    future::Future,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use futures_core::future::BoxFuture;
+
+// a poor man's join future. joined future is only used when starting/stopping the server.
+// pin_project and pinned futures are overkill for this task.
+pub(crate) struct JoinAll<T> {
+    fut: Vec<JoinFuture<T>>,
+}
+
+pub(crate) fn join_all<T>(fut: Vec<impl Future<Output = T> + Send + 'static>) -> JoinAll<T> {
+    let fut = fut
+        .into_iter()
+        .map(|f| JoinFuture::Future(Box::pin(f)))
+        .collect();
+
+    JoinAll { fut }
+}
+
+enum JoinFuture<T> {
+    Future(BoxFuture<'static, T>),
+    Result(Option<T>),
+}
+
+impl<T> Unpin for JoinAll<T> {}
+
+impl<T> Future for JoinAll<T> {
+    type Output = Vec<T>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let mut ready = true;
+
+        let this = self.get_mut();
+        for fut in this.fut.iter_mut() {
+            if let JoinFuture::Future(f) = fut {
+                match f.as_mut().poll(cx) {
+                    Poll::Ready(t) => {
+                        *fut = JoinFuture::Result(Some(t));
+                    }
+                    Poll::Pending => ready = false,
+                }
+            }
+        }
+
+        if ready {
+            let mut res = Vec::new();
+            for fut in this.fut.iter_mut() {
+                if let JoinFuture::Result(f) = fut {
+                    res.push(f.take().unwrap());
+                }
+            }
+
+            Poll::Ready(res)
+        } else {
+            Poll::Pending
+        }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    use actix_utils::future::ready;
+
+    #[actix_rt::test]
+    async fn test_join_all() {
+        let futs = vec![ready(Ok(1)), ready(Err(3)), ready(Ok(9))];
+        let mut res = join_all(futs).await.into_iter();
+        assert_eq!(Ok(1), res.next().unwrap());
+        assert_eq!(Err(3), res.next().unwrap());
+        assert_eq!(Ok(9), res.next().unwrap());
+    }
+}

actix-server/src/lib.rs

@@ -5,8 +5,10 @@
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
 mod accept;
+mod availability;
 mod builder;
-mod config;
+mod handle;
+mod join_all;
 mod server;
 mod service;
 mod signals;
@@ -16,7 +18,7 @@ mod waker_queue;
 mod worker;
 
 pub use self::builder::ServerBuilder;
-pub use self::config::{ServiceConfig, ServiceRuntime};
+pub use self::handle::ServerHandle;
 pub use self::server::Server;
 pub use self::service::ServiceFactory;
 pub use self::test_server::TestServer;
@@ -24,120 +26,9 @@ pub use self::test_server::TestServer;
 #[doc(hidden)]
 pub use self::socket::FromStream;
 
-use std::future::Future;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-
-/// Socket ID token
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub(crate) struct Token(usize);
-
-impl Default for Token {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-impl Token {
-    fn new() -> Self {
-        Self(0)
-    }
-
-    pub(crate) fn next(&mut self) -> Token {
-        let token = Token(self.0);
-        self.0 += 1;
-        token
-    }
-}
-
 /// Start server building process
+#[doc(hidden)]
+#[deprecated(since = "2.0.0", note = "Use `Server::build()`.")]
 pub fn new() -> ServerBuilder {
     ServerBuilder::default()
 }
-
-// temporary Ready type for std::future::{ready, Ready}; Can be removed when MSRV surpass 1.48
-#[doc(hidden)]
-pub struct Ready<T>(Option<T>);
-
-pub(crate) fn ready<T>(t: T) -> Ready<T> {
-    Ready(Some(t))
-}
-
-impl<T> Unpin for Ready<T> {}
-
-impl<T> Future for Ready<T> {
-    type Output = T;
-
-    fn poll(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Self::Output> {
-        Poll::Ready(self.get_mut().0.take().unwrap())
-    }
-}
-
-// a poor man's join future. joined future is only used when starting/stopping the server.
-// pin_project and pinned futures are overkill for this task.
-pub(crate) struct JoinAll<T> {
-    fut: Vec<JoinFuture<T>>,
-}
-
-pub(crate) fn join_all<T>(fut: Vec<impl Future<Output = T> + 'static>) -> JoinAll<T> {
-    let fut = fut
-        .into_iter()
-        .map(|f| JoinFuture::Future(Box::pin(f)))
-        .collect();
-
-    JoinAll { fut }
-}
-
-enum JoinFuture<T> {
-    Future(Pin<Box<dyn Future<Output = T>>>),
-    Result(Option<T>),
-}
-
-impl<T> Unpin for JoinAll<T> {}
-
-impl<T> Future for JoinAll<T> {
-    type Output = Vec<T>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let mut ready = true;
-
-        let this = self.get_mut();
-        for fut in this.fut.iter_mut() {
-            if let JoinFuture::Future(f) = fut {
-                match f.as_mut().poll(cx) {
-                    Poll::Ready(t) => {
-                        *fut = JoinFuture::Result(Some(t));
-                    }
-                    Poll::Pending => ready = false,
-                }
-            }
-        }
-
-        if ready {
-            let mut res = Vec::new();
-            for fut in this.fut.iter_mut() {
-                if let JoinFuture::Result(f) = fut {
-                    res.push(f.take().unwrap());
-                }
-            }
-
-            Poll::Ready(res)
-        } else {
-            Poll::Pending
-        }
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[actix_rt::test]
-    async fn test_join_all() {
-        let futs = vec![ready(Ok(1)), ready(Err(3)), ready(Ok(9))];
-        let mut res = join_all(futs).await.into_iter();
-        assert_eq!(Ok(1), res.next().unwrap());
-        assert_eq!(Err(3), res.next().unwrap());
-        assert_eq!(Ok(9), res.next().unwrap());
-    }
-}

actix-server/src/server.rs

@@ -1,112 +1,363 @@
-use std::future::Future;
-use std::io;
-use std::pin::Pin;
-use std::task::{Context, Poll};
+use std::{
+    future::Future,
+    io, mem,
+    pin::Pin,
+    task::{Context, Poll},
+    time::Duration,
+};
 
-use tokio::sync::mpsc::UnboundedSender;
-use tokio::sync::oneshot;
+use actix_rt::{time::sleep, System};
+use futures_core::future::BoxFuture;
+use log::{error, info};
+use tokio::sync::{
+    mpsc::{UnboundedReceiver, UnboundedSender},
+    oneshot,
+};
 
-use crate::builder::ServerBuilder;
-use crate::signals::Signal;
+use crate::{
+    accept::Accept,
+    builder::ServerBuilder,
+    join_all::join_all,
+    service::InternalServiceFactory,
+    signals::{SignalKind, Signals},
+    waker_queue::{WakerInterest, WakerQueue},
+    worker::{ServerWorker, ServerWorkerConfig, WorkerHandleServer},
+    ServerHandle,
+};
 
 #[derive(Debug)]
 pub(crate) enum ServerCommand {
+    /// Worker failed to accept connection, indicating a probable panic.
+    ///
+    /// Contains index of faulted worker.
     WorkerFaulted(usize),
+
+    /// Pause accepting connections.
+    ///
+    /// Contains return channel to notify caller of successful state change.
     Pause(oneshot::Sender<()>),
+
+    /// Resume accepting connections.
+    ///
+    /// Contains return channel to notify caller of successful state change.
     Resume(oneshot::Sender<()>),
-    Signal(Signal),
-    /// Whether to try and shut down gracefully
+
+    /// Stop accepting connections and begin shutdown procedure.
     Stop {
+        /// True if shut down should be graceful.
         graceful: bool,
+
+        /// Return channel to notify caller that shutdown is complete.
         completion: Option<oneshot::Sender<()>>,
     },
-    /// Notify of server stop
-    Notify(oneshot::Sender<()>),
 }
 
-#[derive(Debug)]
-pub struct Server(
-    UnboundedSender<ServerCommand>,
-    Option<oneshot::Receiver<()>>,
-);
+/// General purpose TCP server that runs services receiving Tokio `TcpStream`s.
+///
+/// Handles creating worker threads, restarting faulted workers, connection accepting, and
+/// back-pressure logic.
+///
+/// Creates a worker per CPU core (or the number specified in [`ServerBuilder::workers`]) and
+/// distributes connections with a round-robin strategy.
+///
+/// The [Server] must be awaited to process stop commands and listen for OS signals. It will resolve
+/// when the server has fully shut down.
+///
+/// # Shutdown Signals
+/// On UNIX systems, `SIGQUIT` will start a graceful shutdown and `SIGTERM` or `SIGINT` will start a
+/// forced shutdown. On Windows, a Ctrl-C signal will start a forced shutdown.
+///
+/// A graceful shutdown will wait for all workers to stop first.
+///
+/// # Examples
+/// The following is a TCP echo server. Test using `telnet 127.0.0.1 8080`.
+///
+/// ```no_run
+/// use std::io;
+///
+/// use actix_rt::net::TcpStream;
+/// use actix_server::Server;
+/// use actix_service::{fn_service, ServiceFactoryExt as _};
+/// use bytes::BytesMut;
+/// use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
+///
+/// #[actix_rt::main]
+/// async fn main() -> io::Result<()> {
+///     let bind_addr = ("127.0.0.1", 8080);
+///
+///     Server::build()
+///         .bind("echo", bind_addr, move || {
+///             fn_service(move |mut stream: TcpStream| {
+///                 async move {
+///                     let mut size = 0;
+///                     let mut buf = BytesMut::new();
+///
+///                     loop {
+///                         match stream.read_buf(&mut buf).await {
+///                             // end of stream; bail from loop
+///                             Ok(0) => break,
+///
+///                             // write bytes back to stream
+///                             Ok(bytes_read) => {
+///                                 stream.write_all(&buf[size..]).await.unwrap();
+///                                 size += bytes_read;
+///                             }
+///
+///                             Err(err) => {
+///                                 eprintln!("Stream Error: {:?}", err);
+///                                 return Err(());
+///                             }
+///                         }
+///                     }
+///
+///                     Ok(())
+///                 }
+///             })
+///             .map_err(|err| eprintln!("Service Error: {:?}", err))
+///         })?
+///         .run()
+///         .await
+/// }
+/// ```
+#[must_use = "futures do nothing unless you `.await` or poll them"]
+pub enum Server {
+    Server(ServerInner),
+    Error(Option<io::Error>),
+}
 
 impl Server {
-    pub(crate) fn new(tx: UnboundedSender<ServerCommand>) -> Self {
-        Server(tx, None)
-    }
-
-    /// Start server building process
+    /// Create server build.
     pub fn build() -> ServerBuilder {
         ServerBuilder::default()
     }
 
-    pub(crate) fn signal(&self, sig: Signal) {
-        let _ = self.0.send(ServerCommand::Signal(sig));
+    pub(crate) fn new(mut builder: ServerBuilder) -> Self {
+        let sockets = mem::take(&mut builder.sockets)
+            .into_iter()
+            .map(|t| (t.0, t.2))
+            .collect();
+
+        // Give log information on what runtime will be used.
+        let is_actix = actix_rt::System::try_current().is_some();
+        let is_tokio = tokio::runtime::Handle::try_current().is_ok();
+
+        match (is_actix, is_tokio) {
+            (true, _) => info!("Actix runtime found; starting in Actix runtime"),
+            (_, true) => info!("Tokio runtime found; starting in existing Tokio runtime"),
+            (_, false) => panic!("Actix or Tokio runtime not found; halting"),
+        }
+
+        for (_, name, lst) in &builder.sockets {
+            info!(
+                r#"Starting service: "{}", workers: {}, listening on: {}"#,
+                name,
+                builder.threads,
+                lst.local_addr()
+            );
+        }
+
+        match Accept::start(sockets, &builder) {
+            Ok((waker_queue, worker_handles)) => {
+                // construct OS signals listener future
+                let signals = (builder.listen_os_signals).then(Signals::new);
+
+                Self::Server(ServerInner {
+                    cmd_tx: builder.cmd_tx.clone(),
+                    cmd_rx: builder.cmd_rx,
+                    signals,
+                    waker_queue,
+                    worker_handles,
+                    worker_config: builder.worker_config,
+                    services: builder.factories,
+                    exit: builder.exit,
+                    stop_task: None,
+                })
+            }
+
+            Err(err) => Self::Error(Some(err)),
+        }
     }
 
-    pub(crate) fn worker_faulted(&self, idx: usize) {
-        let _ = self.0.send(ServerCommand::WorkerFaulted(idx));
-    }
-
-    /// Pause accepting incoming connections
+    /// Get a handle for ServerFuture that can be used to change state of actix server.
     ///
-    /// If socket contains some pending connection, they might be dropped.
-    /// All opened connection remains active.
-    pub fn pause(&self) -> impl Future<Output = ()> {
-        let (tx, rx) = oneshot::channel();
-        let _ = self.0.send(ServerCommand::Pause(tx));
-        async {
-            let _ = rx.await;
+    /// See [ServerHandle](ServerHandle) for usage.
+    pub fn handle(&self) -> ServerHandle {
+        match self {
+            Server::Server(inner) => ServerHandle::new(inner.cmd_tx.clone()),
+            Server::Error(err) => {
+                // TODO: i don't think this is the best way to handle server startup fail
+                panic!(
+                    "server handle can not be obtained because server failed to start up: {}",
+                    err.as_ref().unwrap()
+                );
+            }
         }
     }
-
-    /// Resume accepting incoming connections
-    pub fn resume(&self) -> impl Future<Output = ()> {
-        let (tx, rx) = oneshot::channel();
-        let _ = self.0.send(ServerCommand::Resume(tx));
-        async {
-            let _ = rx.await;
-        }
-    }
-
-    /// Stop incoming connection processing, stop all workers and exit.
-    ///
-    /// If server starts with `spawn()` method, then spawned thread get terminated.
-    pub fn stop(&self, graceful: bool) -> impl Future<Output = ()> {
-        let (tx, rx) = oneshot::channel();
-        let _ = self.0.send(ServerCommand::Stop {
-            graceful,
-            completion: Some(tx),
-        });
-        async {
-            let _ = rx.await;
-        }
-    }
-}
-
-impl Clone for Server {
-    fn clone(&self) -> Self {
-        Self(self.0.clone(), None)
-    }
 }
 
 impl Future for Server {
     type Output = io::Result<()>;
 
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.get_mut();
+    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        match self.as_mut().get_mut() {
+            Self::Error(err) => Poll::Ready(Err(err
+                .take()
+                .expect("Server future cannot be polled after error"))),
 
-        if this.1.is_none() {
-            let (tx, rx) = oneshot::channel();
-            if this.0.send(ServerCommand::Notify(tx)).is_err() {
-                return Poll::Ready(Ok(()));
+            Self::Server(inner) => {
+                // poll Signals
+                if let Some(ref mut signals) = inner.signals {
+                    if let Poll::Ready(signal) = Pin::new(signals).poll(cx) {
+                        inner.stop_task = inner.handle_signal(signal);
+                        // drop signals listener
+                        inner.signals = None;
+                    }
+                }
+
+                // handle stop tasks and eager drain command channel
+                loop {
+                    if let Some(ref mut fut) = inner.stop_task {
+                        // only resolve stop task and exit
+                        return fut.as_mut().poll(cx).map(|_| Ok(()));
+                    }
+
+                    match Pin::new(&mut inner.cmd_rx).poll_recv(cx) {
+                        Poll::Ready(Some(cmd)) => {
+                            // if stop task is required, set it and loop
+                            inner.stop_task = inner.handle_cmd(cmd);
+                        }
+                        _ => return Poll::Pending,
+                    }
+                }
+            }
+        }
+    }
+}
+
+pub struct ServerInner {
+    worker_handles: Vec<WorkerHandleServer>,
+    worker_config: ServerWorkerConfig,
+    services: Vec<Box<dyn InternalServiceFactory>>,
+    exit: bool,
+    cmd_tx: UnboundedSender<ServerCommand>,
+    cmd_rx: UnboundedReceiver<ServerCommand>,
+    signals: Option<Signals>,
+    waker_queue: WakerQueue,
+    stop_task: Option<BoxFuture<'static, ()>>,
+}
+
+impl ServerInner {
+    fn handle_cmd(&mut self, item: ServerCommand) -> Option<BoxFuture<'static, ()>> {
+        match item {
+            ServerCommand::Pause(tx) => {
+                self.waker_queue.wake(WakerInterest::Pause);
+                let _ = tx.send(());
+                None
+            }
+
+            ServerCommand::Resume(tx) => {
+                self.waker_queue.wake(WakerInterest::Resume);
+                let _ = tx.send(());
+                None
+            }
+
+            ServerCommand::Stop {
+                graceful,
+                completion,
+            } => {
+                let exit = self.exit;
+
+                // stop accept thread
+                self.waker_queue.wake(WakerInterest::Stop);
+
+                // stop workers
+                let workers_stop = self
+                    .worker_handles
+                    .iter()
+                    .map(|worker| worker.stop(graceful))
+                    .collect::<Vec<_>>();
+
+                Some(Box::pin(async move {
+                    if graceful {
+                        // wait for all workers to shut down
+                        let _ = join_all(workers_stop).await;
+                    }
+
+                    if let Some(tx) = completion {
+                        let _ = tx.send(());
+                    }
+
+                    if exit {
+                        sleep(Duration::from_millis(300)).await;
+                        System::try_current().as_ref().map(System::stop);
+                    }
+                }))
+            }
+
+            ServerCommand::WorkerFaulted(idx) => {
+                // TODO: maybe just return with warning log if not found ?
+                assert!(self.worker_handles.iter().any(|wrk| wrk.idx == idx));
+
+                error!("Worker {} has died; restarting", idx);
+
+                let factories = self
+                    .services
+                    .iter()
+                    .map(|service| service.clone_factory())
+                    .collect();
+
+                match ServerWorker::start(
+                    idx,
+                    factories,
+                    self.waker_queue.clone(),
+                    self.worker_config,
+                ) {
+                    Ok((handle_accept, handle_server)) => {
+                        *self
+                            .worker_handles
+                            .iter_mut()
+                            .find(|wrk| wrk.idx == idx)
+                            .unwrap() = handle_server;
+
+                        self.waker_queue.wake(WakerInterest::Worker(handle_accept));
+                    }
+
+                    Err(err) => error!("can not restart worker {}: {}", idx, err),
+                };
+
+                None
+            }
+        }
+    }
+
+    fn handle_signal(&mut self, signal: SignalKind) -> Option<BoxFuture<'static, ()>> {
+        match signal {
+            SignalKind::Int => {
+                info!("SIGINT received; starting forced shutdown");
+                self.exit = true;
+                self.handle_cmd(ServerCommand::Stop {
+                    graceful: false,
+                    completion: None,
+                })
+            }
+
+            SignalKind::Term => {
+                info!("SIGTERM received; starting graceful shutdown");
+                self.exit = true;
+                self.handle_cmd(ServerCommand::Stop {
+                    graceful: true,
+                    completion: None,
+                })
+            }
+
+            SignalKind::Quit => {
+                info!("SIGQUIT received; starting forced shutdown");
+                self.exit = true;
+                self.handle_cmd(ServerCommand::Stop {
+                    graceful: false,
+                    completion: None,
+                })
             }
-            this.1 = Some(rx);
-        }
-
-        match Pin::new(this.1.as_mut().unwrap()).poll(cx) {
-            Poll::Pending => Poll::Pending,
-            Poll::Ready(_) => Poll::Ready(Ok(())),
         }
     }
 }

actix-server/src/service.rs

@@ -3,12 +3,12 @@ use std::net::SocketAddr;
 use std::task::{Context, Poll};
 
 use actix_service::{Service, ServiceFactory as BaseServiceFactory};
-use actix_utils::counter::CounterGuard;
+use actix_utils::future::{ready, Ready};
 use futures_core::future::LocalBoxFuture;
 use log::error;
 
 use crate::socket::{FromStream, MioStream};
-use crate::{ready, Ready, Token};
+use crate::worker::WorkerCounterGuard;
 
 pub trait ServiceFactory<Stream: FromStream>: Send + Clone + 'static {
     type Factory: BaseServiceFactory<Stream, Config = ()>;
@@ -17,16 +17,16 @@ pub trait ServiceFactory<Stream: FromStream>: Send + Clone + 'static {
 }
 
 pub(crate) trait InternalServiceFactory: Send {
-    fn name(&self, token: Token) -> &str;
+    fn name(&self, token: usize) -> &str;
 
     fn clone_factory(&self) -> Box<dyn InternalServiceFactory>;
 
-    fn create(&self) -> LocalBoxFuture<'static, Result<Vec<(Token, BoxedServerService)>, ()>>;
+    fn create(&self) -> LocalBoxFuture<'static, Result<(usize, BoxedServerService), ()>>;
 }
 
 pub(crate) type BoxedServerService = Box<
     dyn Service<
-        (Option<CounterGuard>, MioStream),
+        (WorkerCounterGuard, MioStream),
         Response = (),
         Error = (),
         Future = Ready<Result<(), ()>>,
@@ -47,7 +47,7 @@ impl<S, I> StreamService<S, I> {
     }
 }
 
-impl<S, I> Service<(Option<CounterGuard>, MioStream)> for StreamService<S, I>
+impl<S, I> Service<(WorkerCounterGuard, MioStream)> for StreamService<S, I>
 where
     S: Service<I>,
     S::Future: 'static,
@@ -62,7 +62,7 @@ where
         self.service.poll_ready(ctx).map_err(|_| ())
     }
 
-    fn call(&self, (guard, req): (Option<CounterGuard>, MioStream)) -> Self::Future {
+    fn call(&self, (guard, req): (WorkerCounterGuard, MioStream)) -> Self::Future {
         ready(match FromStream::from_mio(req) {
             Ok(stream) => {
                 let f = self.service.call(stream);
@@ -83,7 +83,7 @@ where
 pub(crate) struct StreamNewService<F: ServiceFactory<Io>, Io: FromStream> {
     name: String,
     inner: F,
-    token: Token,
+    token: usize,
     addr: SocketAddr,
     _t: PhantomData<Io>,
 }
@@ -95,7 +95,7 @@ where
 {
     pub(crate) fn create(
         name: String,
-        token: Token,
+        token: usize,
         inner: F,
         addr: SocketAddr,
     ) -> Box<dyn InternalServiceFactory> {
@@ -114,7 +114,7 @@ where
     F: ServiceFactory<Io>,
     Io: FromStream + Send + 'static,
 {
-    fn name(&self, _: Token) -> &str {
+    fn name(&self, _: usize) -> &str {
         &self.name
     }
 
@@ -128,14 +128,14 @@ where
         })
     }
 
-    fn create(&self) -> LocalBoxFuture<'static, Result<Vec<(Token, BoxedServerService)>, ()>> {
+    fn create(&self) -> LocalBoxFuture<'static, Result<(usize, BoxedServerService), ()>> {
         let token = self.token;
         let fut = self.inner.create().new_service(());
         Box::pin(async move {
             match fut.await {
                 Ok(inner) => {
                     let service = Box::new(StreamService::new(inner)) as _;
-                    Ok(vec![(token, service)])
+                    Ok((token, service))
                 }
                 Err(_) => Err(()),
             }

actix-server/src/signals.rs

@@ -1,49 +1,66 @@
-use std::future::Future;
-use std::pin::Pin;
-use std::task::{Context, Poll};
+use std::{
+    fmt,
+    future::Future,
+    pin::Pin,
+    task::{Context, Poll},
+};
 
-use crate::server::Server;
+use log::trace;
 
-/// Different types of process signals
-#[allow(dead_code)]
-#[derive(PartialEq, Clone, Copy, Debug)]
-pub(crate) enum Signal {
-    /// SIGHUP
-    Hup,
-    /// SIGINT
+/// Types of process signals.
+// #[allow(dead_code)]
+#[derive(Debug, Clone, Copy, PartialEq)]
+#[allow(dead_code)] // variants are never constructed on non-unix
+pub(crate) enum SignalKind {
+    /// `SIGINT`
     Int,
-    /// SIGTERM
+
+    /// `SIGTERM`
     Term,
-    /// SIGQUIT
+
+    /// `SIGQUIT`
     Quit,
 }
 
+impl fmt::Display for SignalKind {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(match self {
+            SignalKind::Int => "SIGINT",
+            SignalKind::Term => "SIGTERM",
+            SignalKind::Quit => "SIGQUIT",
+        })
+    }
+}
+
+/// Process signal listener.
 pub(crate) struct Signals {
-    srv: Server,
     #[cfg(not(unix))]
-    signals: futures_core::future::LocalBoxFuture<'static, std::io::Result<()>>,
+    signals: futures_core::future::BoxFuture<'static, std::io::Result<()>>,
+
     #[cfg(unix)]
-    signals: Vec<(Signal, actix_rt::signal::unix::Signal)>,
+    signals: Vec<(SignalKind, actix_rt::signal::unix::Signal)>,
 }
 
 impl Signals {
-    pub(crate) fn start(srv: Server) {
+    /// Constructs an OS signal listening future.
+    pub(crate) fn new() -> Self {
+        trace!("setting up OS signal listener");
+
         #[cfg(not(unix))]
         {
-            actix_rt::spawn(Signals {
-                srv,
+            Signals {
                 signals: Box::pin(actix_rt::signal::ctrl_c()),
-            });
+            }
         }
+
         #[cfg(unix)]
         {
             use actix_rt::signal::unix;
 
             let sig_map = [
-                (unix::SignalKind::interrupt(), Signal::Int),
-                (unix::SignalKind::hangup(), Signal::Hup),
-                (unix::SignalKind::terminate(), Signal::Term),
-                (unix::SignalKind::quit(), Signal::Quit),
+                (unix::SignalKind::interrupt(), SignalKind::Int),
+                (unix::SignalKind::terminate(), SignalKind::Term),
+                (unix::SignalKind::quit(), SignalKind::Quit),
             ];
 
             let signals = sig_map
@@ -62,32 +79,29 @@ impl Signals {
                 })
                 .collect::<Vec<_>>();
 
-            actix_rt::spawn(Signals { srv, signals });
+            Signals { signals }
         }
     }
 }
 
 impl Future for Signals {
-    type Output = ();
+    type Output = SignalKind;
 
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         #[cfg(not(unix))]
-        match self.signals.as_mut().poll(cx) {
-            Poll::Ready(_) => {
-                self.srv.signal(Signal::Int);
-                Poll::Ready(())
-            }
-            Poll::Pending => Poll::Pending,
+        {
+            self.signals.as_mut().poll(cx).map(|_| SignalKind::Int)
         }
+
         #[cfg(unix)]
         {
             for (sig, fut) in self.signals.iter_mut() {
                 if Pin::new(fut).poll_recv(cx).is_ready() {
-                    let sig = *sig;
-                    self.srv.signal(sig);
-                    return Poll::Ready(());
+                    trace!("{} received", sig);
+                    return Poll::Ready(*sig);
                 }
             }
+
             Poll::Pending
         }
     }

actix-server/src/socket.rs

@@ -2,7 +2,7 @@ pub(crate) use std::net::{
     SocketAddr as StdSocketAddr, TcpListener as StdTcpListener, ToSocketAddrs,
 };
 
-pub(crate) use mio::net::{TcpListener as MioTcpListener, TcpSocket as MioTcpSocket};
+pub(crate) use mio::net::TcpListener as MioTcpListener;
 #[cfg(unix)]
 pub(crate) use {
     mio::net::UnixListener as MioUnixListener,
@@ -12,18 +12,7 @@ pub(crate) use {
 use std::{fmt, io};
 
 use actix_rt::net::TcpStream;
-use mio::event::Source;
-use mio::net::TcpStream as MioTcpStream;
-use mio::{Interest, Registry, Token};
-
-#[cfg(windows)]
-use std::os::windows::io::{FromRawSocket, IntoRawSocket};
-#[cfg(unix)]
-use {
-    actix_rt::net::UnixStream,
-    mio::net::{SocketAddr as MioSocketAddr, UnixStream as MioUnixStream},
-    std::os::unix::io::{FromRawFd, IntoRawFd},
-};
+use mio::{event::Source, Interest, Registry, Token};
 
 pub(crate) enum MioListener {
     Tcp(MioTcpListener),
@@ -34,9 +23,15 @@ pub(crate) enum MioListener {
 impl MioListener {
     pub(crate) fn local_addr(&self) -> SocketAddr {
         match *self {
-            MioListener::Tcp(ref lst) => SocketAddr::Tcp(lst.local_addr().unwrap()),
+            MioListener::Tcp(ref lst) => lst
+                .local_addr()
+                .map(SocketAddr::Tcp)
+                .unwrap_or(SocketAddr::Unknown),
             #[cfg(unix)]
-            MioListener::Uds(ref lst) => SocketAddr::Uds(lst.local_addr().unwrap()),
+            MioListener::Uds(ref lst) => lst
+                .local_addr()
+                .map(SocketAddr::Uds)
+                .unwrap_or(SocketAddr::Unknown),
         }
     }
 
@@ -121,25 +116,27 @@ impl fmt::Debug for MioListener {
 impl fmt::Display for MioListener {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            MioListener::Tcp(ref lst) => write!(f, "{}", lst.local_addr().ok().unwrap()),
+            MioListener::Tcp(ref lst) => write!(f, "{:?}", lst),
             #[cfg(unix)]
-            MioListener::Uds(ref lst) => write!(f, "{:?}", lst.local_addr().ok().unwrap()),
+            MioListener::Uds(ref lst) => write!(f, "{:?}", lst),
         }
     }
 }
 
 pub(crate) enum SocketAddr {
+    Unknown,
     Tcp(StdSocketAddr),
     #[cfg(unix)]
-    Uds(MioSocketAddr),
+    Uds(mio::net::SocketAddr),
 }
 
 impl fmt::Display for SocketAddr {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            SocketAddr::Tcp(ref addr) => write!(f, "{}", addr),
+            Self::Unknown => write!(f, "Unknown SocketAddr"),
+            Self::Tcp(ref addr) => write!(f, "{}", addr),
             #[cfg(unix)]
-            SocketAddr::Uds(ref addr) => write!(f, "{:?}", addr),
+            Self::Uds(ref addr) => write!(f, "{:?}", addr),
         }
     }
 }
@@ -147,69 +144,99 @@ impl fmt::Display for SocketAddr {
 impl fmt::Debug for SocketAddr {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
-            SocketAddr::Tcp(ref addr) => write!(f, "{:?}", addr),
+            Self::Unknown => write!(f, "Unknown SocketAddr"),
+            Self::Tcp(ref addr) => write!(f, "{:?}", addr),
             #[cfg(unix)]
-            SocketAddr::Uds(ref addr) => write!(f, "{:?}", addr),
+            Self::Uds(ref addr) => write!(f, "{:?}", addr),
         }
     }
 }
 
 #[derive(Debug)]
 pub enum MioStream {
-    Tcp(MioTcpStream),
+    Tcp(mio::net::TcpStream),
     #[cfg(unix)]
-    Uds(MioUnixStream),
+    Uds(mio::net::UnixStream),
 }
 
-/// helper trait for converting mio stream to tokio stream.
+/// Helper trait for converting a Mio stream into a Tokio stream.
 pub trait FromStream: Sized {
     fn from_mio(sock: MioStream) -> io::Result<Self>;
 }
 
-// FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
-#[cfg(unix)]
-impl FromStream for TcpStream {
-    fn from_mio(sock: MioStream) -> io::Result<Self> {
-        match sock {
-            MioStream::Tcp(mio) => {
-                let raw = IntoRawFd::into_raw_fd(mio);
-                // SAFETY: This is a in place conversion from mio stream to tokio stream.
-                TcpStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
-            }
-            MioStream::Uds(_) => {
-                panic!("Should not happen, bug in server impl");
-            }
-        }
-    }
-}
-
-// FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
 #[cfg(windows)]
-impl FromStream for TcpStream {
-    fn from_mio(sock: MioStream) -> io::Result<Self> {
-        match sock {
-            MioStream::Tcp(mio) => {
-                let raw = IntoRawSocket::into_raw_socket(mio);
-                // SAFETY: This is a in place conversion from mio stream to tokio stream.
-                TcpStream::from_std(unsafe { FromRawSocket::from_raw_socket(raw) })
+mod win_impl {
+    use std::os::windows::io::{FromRawSocket, IntoRawSocket};
+
+    use super::*;
+
+    // TODO: This is a workaround and we need an efficient way to convert between Mio and Tokio stream
+    impl FromStream for TcpStream {
+        fn from_mio(sock: MioStream) -> io::Result<Self> {
+            match sock {
+                MioStream::Tcp(mio) => {
+                    let raw = IntoRawSocket::into_raw_socket(mio);
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
+                    TcpStream::from_std(unsafe { FromRawSocket::from_raw_socket(raw) })
+                }
             }
         }
     }
 }
 
-// FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
 #[cfg(unix)]
-impl FromStream for UnixStream {
-    fn from_mio(sock: MioStream) -> io::Result<Self> {
-        match sock {
-            MioStream::Tcp(_) => panic!("Should not happen, bug in server impl"),
-            MioStream::Uds(mio) => {
-                let raw = IntoRawFd::into_raw_fd(mio);
-                // SAFETY: This is a in place conversion from mio stream to tokio stream.
-                UnixStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
+mod unix_impl {
+    use std::os::unix::io::{FromRawFd, IntoRawFd};
+
+    use actix_rt::net::UnixStream;
+
+    use super::*;
+
+    // HACK: This is a workaround and we need an efficient way to convert between Mio and Tokio stream
+    impl FromStream for TcpStream {
+        fn from_mio(sock: MioStream) -> io::Result<Self> {
+            match sock {
+                MioStream::Tcp(mio) => {
+                    let raw = IntoRawFd::into_raw_fd(mio);
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
+                    TcpStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
+                }
+                MioStream::Uds(_) => {
+                    panic!("Should not happen, bug in server impl");
+                }
             }
         }
     }
+
+    // HACK: This is a workaround and we need an efficient way to convert between Mio and Tokio stream
+    impl FromStream for UnixStream {
+        fn from_mio(sock: MioStream) -> io::Result<Self> {
+            match sock {
+                MioStream::Tcp(_) => panic!("Should not happen, bug in server impl"),
+                MioStream::Uds(mio) => {
+                    let raw = IntoRawFd::into_raw_fd(mio);
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
+                    UnixStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
+                }
+            }
+        }
+    }
+}
+
+pub(crate) fn create_mio_tcp_listener(
+    addr: StdSocketAddr,
+    backlog: u32,
+) -> io::Result<MioTcpListener> {
+    use socket2::{Domain, Protocol, Socket, Type};
+
+    let socket = Socket::new(Domain::for_address(addr), Type::STREAM, Some(Protocol::TCP))?;
+
+    socket.set_reuse_address(true)?;
+    socket.set_nonblocking(true)?;
+    socket.bind(&addr.into())?;
+    socket.listen(backlog as i32)?;
+
+    Ok(MioTcpListener::from_std(StdTcpListener::from(socket)))
 }
 
 #[cfg(test)]
@@ -223,11 +250,8 @@ mod tests {
         assert_eq!(format!("{}", addr), "127.0.0.1:8080");
 
         let addr: StdSocketAddr = "127.0.0.1:0".parse().unwrap();
-        let socket = MioTcpSocket::new_v4().unwrap();
-        socket.set_reuseaddr(true).unwrap();
-        socket.bind(addr).unwrap();
-        let tcp = socket.listen(128).unwrap();
-        let lst = MioListener::Tcp(tcp);
+        let lst = create_mio_tcp_listener(addr, 128).unwrap();
+        let lst = MioListener::Tcp(lst);
         assert!(format!("{:?}", lst).contains("TcpListener"));
         assert!(format!("{}", lst).contains("127.0.0.1"));
     }

actix-server/src/test_server.rs

@@ -1,17 +1,15 @@
-use std::sync::mpsc;
-use std::{net, thread};
+use std::{io, net, sync::mpsc, thread};
 
 use actix_rt::{net::TcpStream, System};
 
-use crate::{Server, ServerBuilder, ServiceFactory};
+use crate::{Server, ServerBuilder, ServerHandle, ServiceFactory};
 
-/// The `TestServer` type.
+/// A testing server.
 ///
-/// `TestServer` is very simple test server that simplify process of writing
-/// integration tests for actix-net applications.
+/// `TestServer` is very simple test server that simplify process of writing integration tests for
+/// network applications.
 ///
 /// # Examples
-///
 /// ```
 /// use actix_service::fn_service;
 /// use actix_server::TestServer;
@@ -35,11 +33,12 @@ pub struct TestServerRuntime {
     addr: net::SocketAddr,
     host: String,
     port: u16,
-    system: System,
+    server_handle: ServerHandle,
+    thread_handle: Option<thread::JoinHandle<io::Result<()>>>,
 }
 
 impl TestServer {
-    /// Start new server with server builder
+    /// Start new server with server builder.
     pub fn start<F>(mut factory: F) -> TestServerRuntime
     where
         F: FnMut(ServerBuilder) -> ServerBuilder + Send + 'static,
@@ -47,46 +46,49 @@ impl TestServer {
         let (tx, rx) = mpsc::channel();
 
         // run server in separate thread
-        thread::spawn(move || {
-            let sys = System::new();
-            factory(Server::build()).workers(1).disable_signals().run();
-
-            tx.send(System::current()).unwrap();
-            sys.run()
+        let thread_handle = thread::spawn(move || {
+            System::new().block_on(async {
+                let server = factory(Server::build()).workers(1).disable_signals().run();
+                tx.send(server.handle()).unwrap();
+                server.await
+            })
         });
-        let system = rx.recv().unwrap();
+
+        let server_handle = rx.recv().unwrap();
 
         TestServerRuntime {
-            system,
             addr: "127.0.0.1:0".parse().unwrap(),
             host: "127.0.0.1".to_string(),
             port: 0,
+            server_handle,
+            thread_handle: Some(thread_handle),
         }
     }
 
-    /// Start new test server with application factory
+    /// Start new test server with application factory.
     pub fn with<F: ServiceFactory<TcpStream>>(factory: F) -> TestServerRuntime {
         let (tx, rx) = mpsc::channel();
 
         // run server in separate thread
-        thread::spawn(move || {
+        let thread_handle = thread::spawn(move || {
             let sys = System::new();
             let tcp = net::TcpListener::bind("127.0.0.1:0").unwrap();
             let local_addr = tcp.local_addr().unwrap();
 
             sys.block_on(async {
-                Server::build()
+                let server = Server::build()
                     .listen("test", tcp, factory)
                     .unwrap()
                     .workers(1)
                     .disable_signals()
                     .run();
-                tx.send((System::current(), local_addr)).unwrap();
-            });
-            sys.run()
+
+                tx.send((server.handle(), local_addr)).unwrap();
+                server.await
+            })
         });
 
-        let (system, addr) = rx.recv().unwrap();
+        let (server_handle, addr) = rx.recv().unwrap();
 
         let host = format!("{}", addr.ip());
         let port = addr.port();
@@ -95,43 +97,49 @@ impl TestServer {
             addr,
             host,
             port,
-            system,
+            server_handle,
+            thread_handle: Some(thread_handle),
         }
     }
 
-    /// Get first available unused local address
+    /// Get first available unused local address.
     pub fn unused_addr() -> net::SocketAddr {
+        use socket2::{Domain, Protocol, Socket, Type};
+
         let addr: net::SocketAddr = "127.0.0.1:0".parse().unwrap();
-        let socket = mio::net::TcpSocket::new_v4().unwrap();
-        socket.bind(addr).unwrap();
-        socket.set_reuseaddr(true).unwrap();
-        let tcp = socket.listen(1024).unwrap();
-        tcp.local_addr().unwrap()
+        let socket =
+            Socket::new(Domain::for_address(addr), Type::STREAM, Some(Protocol::TCP)).unwrap();
+        socket.set_reuse_address(true).unwrap();
+        socket.set_nonblocking(true).unwrap();
+        socket.bind(&addr.into()).unwrap();
+        socket.listen(1024).unwrap();
+        net::TcpListener::from(socket).local_addr().unwrap()
     }
 }
 
 impl TestServerRuntime {
-    /// Test server host
+    /// Test server host.
     pub fn host(&self) -> &str {
         &self.host
     }
 
-    /// Test server port
+    /// Test server port.
     pub fn port(&self) -> u16 {
         self.port
     }
 
-    /// Get test server address
+    /// Get test server address.
     pub fn addr(&self) -> net::SocketAddr {
         self.addr
     }
 
-    /// Stop http server
+    /// Stop server.
     fn stop(&mut self) {
-        self.system.stop();
+        let _ = self.server_handle.stop(false);
+        self.thread_handle.take().unwrap().join().unwrap().unwrap();
     }
 
-    /// Connect to server, return tokio TcpStream
+    /// Connect to server, returning a Tokio `TcpStream`.
     pub fn connect(&self) -> std::io::Result<TcpStream> {
         TcpStream::from_std(net::TcpStream::connect(self.addr)?)
     }
@@ -142,3 +150,16 @@ impl Drop for TestServerRuntime {
         self.stop()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use actix_service::fn_service;
+
+    use super::*;
+
+    #[tokio::test]
+    async fn plain_tokio_runtime() {
+        let srv = TestServer::with(|| fn_service(|_sock| async move { Ok::<_, ()>(()) }));
+        assert!(srv.connect().is_ok());
+    }
+}

actix-server/src/waker_queue.rs

@@ -6,7 +6,7 @@ use std::{
 
 use mio::{Registry, Token as MioToken, Waker};
 
-use crate::worker::WorkerHandle;
+use crate::worker::WorkerHandleAccept;
 
 /// Waker token for `mio::Poll` instance.
 pub(crate) const WAKER_TOKEN: MioToken = MioToken(usize::MAX);
@@ -72,18 +72,13 @@ impl WakerQueue {
 pub(crate) enum WakerInterest {
     /// `WorkerAvailable` is an interest from `Worker` notifying `Accept` there is a worker
     /// available and can accept new tasks.
-    WorkerAvailable,
+    WorkerAvailable(usize),
     /// `Pause`, `Resume`, `Stop` Interest are from `ServerBuilder` future. It listens to
     /// `ServerCommand` and notify `Accept` to do exactly these tasks.
     Pause,
     Resume,
     Stop,
-    /// `Timer` is an interest sent as a delayed future. When an error happens on accepting
-    /// connection `Accept` would deregister socket listener temporary and wake up the poll and
-    /// register them again after the delayed future resolve.
-    Timer,
-    /// `Worker` is an interest happen after a worker runs into faulted state(This is determined
-    /// by if work can be sent to it successfully).`Accept` would be waked up and add the new
-    /// `WorkerHandle`.
-    Worker(WorkerHandle),
+    /// `Worker` is an interest that is triggered after a worker faults. This is determined by
+    /// trying to send work to it. `Accept` would be waked up and add the new `WorkerHandleAccept`.
+    Worker(WorkerHandleAccept),
 }

actix-server/src/worker.rs

@@ -1,142 +1,217 @@
-use std::future::Future;
-use std::pin::Pin;
-use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
-use std::sync::Arc;
-use std::task::{Context, Poll};
-use std::time::Duration;
+use std::{
+    future::Future,
+    io, mem,
+    pin::Pin,
+    rc::Rc,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        Arc,
+    },
+    task::{Context, Poll},
+    time::Duration,
+};
 
-use actix_rt::time::{sleep, Sleep};
-use actix_rt::{spawn, Arbiter};
-use actix_utils::counter::Counter;
-use futures_core::future::LocalBoxFuture;
+use actix_rt::{
+    spawn,
+    time::{sleep, Instant, Sleep},
+    Arbiter, ArbiterHandle, System,
+};
+use futures_core::{future::LocalBoxFuture, ready};
 use log::{error, info, trace};
-use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender};
-use tokio::sync::oneshot;
+use tokio::sync::{
+    mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender},
+    oneshot,
+};
 
-use crate::service::{BoxedServerService, InternalServiceFactory};
-use crate::socket::MioStream;
-use crate::waker_queue::{WakerInterest, WakerQueue};
-use crate::{join_all, Token};
+use crate::{
+    service::{BoxedServerService, InternalServiceFactory},
+    socket::MioStream,
+    waker_queue::{WakerInterest, WakerQueue},
+};
 
-pub(crate) struct WorkerCommand(Conn);
-
-/// Stop worker message. Returns `true` on successful shutdown
-/// and `false` if some connections still alive.
-pub(crate) struct StopCommand {
+/// Stop worker message. Returns `true` on successful graceful shutdown
+/// and `false` if some connections still alive when shutdown execute.
+pub(crate) struct Stop {
     graceful: bool,
-    result: oneshot::Sender<bool>,
+    tx: oneshot::Sender<bool>,
 }
 
 #[derive(Debug)]
 pub(crate) struct Conn {
     pub io: MioStream,
-    pub token: Token,
+    pub token: usize,
 }
 
-static MAX_CONNS: AtomicUsize = AtomicUsize::new(25600);
+/// Create accept and server worker handles.
+fn handle_pair(
+    idx: usize,
+    conn_tx: UnboundedSender<Conn>,
+    stop_tx: UnboundedSender<Stop>,
+    counter: Counter,
+) -> (WorkerHandleAccept, WorkerHandleServer) {
+    let accept = WorkerHandleAccept {
+        idx,
+        conn_tx,
+        counter,
+    };
 
-/// Sets the maximum per-worker number of concurrent connections.
+    let server = WorkerHandleServer { idx, stop_tx };
+
+    (accept, server)
+}
+
+/// counter: Arc<AtomicUsize> field is owned by `Accept` thread and `ServerWorker` thread.
 ///
-/// All socket listeners will stop accepting connections when this limit is
-/// reached for each worker.
+/// `Accept` would increment the counter and `ServerWorker` would decrement it.
 ///
-/// By default max connections is set to a 25k per worker.
-pub fn max_concurrent_connections(num: usize) {
-    MAX_CONNS.store(num, Ordering::Relaxed);
-}
-
-thread_local! {
-    static MAX_CONNS_COUNTER: Counter =
-        Counter::new(MAX_CONNS.load(Ordering::Relaxed));
-}
-
-pub(crate) fn num_connections() -> usize {
-    MAX_CONNS_COUNTER.with(|conns| conns.total())
-}
-
-// a handle to worker that can send message to worker and share the availability of worker to other
-// thread.
+/// # Atomic Ordering:
+///
+/// `Accept` always look into it's cached `Availability` field for `ServerWorker` state.
+/// It lazily increment counter after successful dispatching new work to `ServerWorker`.
+/// On reaching counter limit `Accept` update it's cached `Availability` and mark worker as
+/// unable to accept any work.
+///
+/// `ServerWorker` always decrement the counter when every work received from `Accept` is done.
+/// On reaching counter limit worker would use `mio::Waker` and `WakerQueue` to wake up `Accept`
+/// and notify it to update cached `Availability` again to mark worker as able to accept work again.
+///
+/// Hence, a wake up would only happen after `Accept` increment it to limit.
+/// And a decrement to limit always wake up `Accept`.
 #[derive(Clone)]
-pub(crate) struct WorkerHandle {
-    pub idx: usize,
-    tx1: UnboundedSender<WorkerCommand>,
-    tx2: UnboundedSender<StopCommand>,
-    avail: WorkerAvailability,
+pub(crate) struct Counter {
+    counter: Arc<AtomicUsize>,
+    limit: usize,
 }
 
-impl WorkerHandle {
-    pub fn new(
-        idx: usize,
-        tx1: UnboundedSender<WorkerCommand>,
-        tx2: UnboundedSender<StopCommand>,
-        avail: WorkerAvailability,
-    ) -> Self {
-        WorkerHandle {
+impl Counter {
+    pub(crate) fn new(limit: usize) -> Self {
+        Self {
+            counter: Arc::new(AtomicUsize::new(1)),
+            limit,
+        }
+    }
+
+    /// Increment counter by 1 and return true when hitting limit
+    #[inline(always)]
+    pub(crate) fn inc(&self) -> bool {
+        self.counter.fetch_add(1, Ordering::Relaxed) != self.limit
+    }
+
+    /// Decrement counter by 1 and return true if crossing limit.
+    #[inline(always)]
+    pub(crate) fn dec(&self) -> bool {
+        self.counter.fetch_sub(1, Ordering::Relaxed) == self.limit
+    }
+
+    pub(crate) fn total(&self) -> usize {
+        self.counter.load(Ordering::SeqCst) - 1
+    }
+}
+
+pub(crate) struct WorkerCounter {
+    idx: usize,
+    inner: Rc<(WakerQueue, Counter)>,
+}
+
+impl Clone for WorkerCounter {
+    fn clone(&self) -> Self {
+        Self {
+            idx: self.idx,
+            inner: self.inner.clone(),
+        }
+    }
+}
+
+impl WorkerCounter {
+    pub(crate) fn new(idx: usize, waker_queue: WakerQueue, counter: Counter) -> Self {
+        Self {
             idx,
-            tx1,
-            tx2,
-            avail,
+            inner: Rc::new((waker_queue, counter)),
         }
     }
 
-    pub fn send(&self, msg: Conn) -> Result<(), Conn> {
-        self.tx1.send(WorkerCommand(msg)).map_err(|msg| msg.0 .0)
+    #[inline(always)]
+    pub(crate) fn guard(&self) -> WorkerCounterGuard {
+        WorkerCounterGuard(self.clone())
     }
 
-    pub fn available(&self) -> bool {
-        self.avail.available()
+    fn total(&self) -> usize {
+        self.inner.1.total()
+    }
+}
+
+pub(crate) struct WorkerCounterGuard(WorkerCounter);
+
+impl Drop for WorkerCounterGuard {
+    fn drop(&mut self) {
+        let (waker_queue, counter) = &*self.0.inner;
+        if counter.dec() {
+            waker_queue.wake(WakerInterest::WorkerAvailable(self.0.idx));
+        }
+    }
+}
+
+/// Handle to worker that can send connection message to worker and share the availability of worker
+/// to other threads.
+///
+/// Held by [Accept](crate::accept::Accept).
+pub(crate) struct WorkerHandleAccept {
+    idx: usize,
+    conn_tx: UnboundedSender<Conn>,
+    counter: Counter,
+}
+
+impl WorkerHandleAccept {
+    #[inline(always)]
+    pub(crate) fn idx(&self) -> usize {
+        self.idx
     }
 
-    pub fn stop(&self, graceful: bool) -> oneshot::Receiver<bool> {
-        let (result, rx) = oneshot::channel();
-        let _ = self.tx2.send(StopCommand { graceful, result });
+    #[inline(always)]
+    pub(crate) fn send(&self, conn: Conn) -> Result<(), Conn> {
+        self.conn_tx.send(conn).map_err(|msg| msg.0)
+    }
+
+    #[inline(always)]
+    pub(crate) fn inc_counter(&self) -> bool {
+        self.counter.inc()
+    }
+}
+
+/// Handle to worker than can send stop message to worker.
+///
+/// Held by [ServerBuilder](crate::builder::ServerBuilder).
+#[derive(Debug)]
+pub(crate) struct WorkerHandleServer {
+    pub(crate) idx: usize,
+    stop_tx: UnboundedSender<Stop>,
+}
+
+impl WorkerHandleServer {
+    pub(crate) fn stop(&self, graceful: bool) -> oneshot::Receiver<bool> {
+        let (tx, rx) = oneshot::channel();
+        let _ = self.stop_tx.send(Stop { graceful, tx });
         rx
     }
 }
 
-#[derive(Clone)]
-pub(crate) struct WorkerAvailability {
-    waker: WakerQueue,
-    available: Arc<AtomicBool>,
-}
-
-impl WorkerAvailability {
-    pub fn new(waker: WakerQueue) -> Self {
-        WorkerAvailability {
-            waker,
-            available: Arc::new(AtomicBool::new(false)),
-        }
-    }
-
-    pub fn available(&self) -> bool {
-        self.available.load(Ordering::Acquire)
-    }
-
-    pub fn set(&self, val: bool) {
-        let old = self.available.swap(val, Ordering::Release);
-        // notify the accept on switched to available.
-        if !old && val {
-            self.waker.wake(WakerInterest::WorkerAvailable);
-        }
-    }
-}
-
 /// Service worker.
 ///
 /// Worker accepts Socket objects via unbounded channel and starts stream processing.
 pub(crate) struct ServerWorker {
-    rx: UnboundedReceiver<WorkerCommand>,
-    rx2: UnboundedReceiver<StopCommand>,
-    services: Vec<WorkerService>,
-    availability: WorkerAvailability,
-    conns: Counter,
-    factories: Vec<Box<dyn InternalServiceFactory>>,
+    // UnboundedReceiver<Conn> should always be the first field.
+    // It must be dropped as soon as ServerWorker dropping.
+    conn_rx: UnboundedReceiver<Conn>,
+    stop_rx: UnboundedReceiver<Stop>,
+    counter: WorkerCounter,
+    services: Box<[WorkerService]>,
+    factories: Box<[Box<dyn InternalServiceFactory>]>,
     state: WorkerState,
-    config: ServerWorkerConfig,
+    shutdown_timeout: Duration,
 }
 
 struct WorkerService {
-    factory: usize,
+    factory_idx: usize,
     status: WorkerServiceStatus,
     service: BoxedServerService,
 }
@@ -148,7 +223,7 @@ impl WorkerService {
     }
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum WorkerServiceStatus {
     Available,
     Unavailable,
@@ -158,11 +233,18 @@ enum WorkerServiceStatus {
     Stopped,
 }
 
+impl Default for WorkerServiceStatus {
+    fn default() -> Self {
+        Self::Unavailable
+    }
+}
+
 /// Config for worker behavior passed down from server builder.
-#[derive(Copy, Clone)]
+#[derive(Debug, Clone, Copy)]
 pub(crate) struct ServerWorkerConfig {
     shutdown_timeout: Duration,
     max_blocking_threads: usize,
+    max_concurrent_connections: usize,
 }
 
 impl Default for ServerWorkerConfig {
@@ -172,6 +254,7 @@ impl Default for ServerWorkerConfig {
         Self {
             shutdown_timeout: Duration::from_secs(30),
             max_blocking_threads,
+            max_concurrent_connections: 25600,
         }
     }
 }
@@ -181,6 +264,10 @@ impl ServerWorkerConfig {
         self.max_blocking_threads = num;
     }
 
+    pub(crate) fn max_concurrent_connections(&mut self, num: usize) {
+        self.max_concurrent_connections = num;
+    }
+
     pub(crate) fn shutdown_timeout(&mut self, dur: Duration) {
         self.shutdown_timeout = dur;
     }
@@ -190,97 +277,229 @@ impl ServerWorker {
     pub(crate) fn start(
         idx: usize,
         factories: Vec<Box<dyn InternalServiceFactory>>,
-        availability: WorkerAvailability,
+        waker_queue: WakerQueue,
         config: ServerWorkerConfig,
-    ) -> WorkerHandle {
-        let (tx1, rx) = unbounded_channel();
-        let (tx2, rx2) = unbounded_channel();
-        let avail = availability.clone();
+    ) -> io::Result<(WorkerHandleAccept, WorkerHandleServer)> {
+        trace!("starting server worker {}", idx);
 
-        // every worker runs in it's own arbiter.
+        let (tx1, conn_rx) = unbounded_channel();
+        let (tx2, stop_rx) = unbounded_channel();
+
+        let counter = Counter::new(config.max_concurrent_connections);
+        let pair = handle_pair(idx, tx1, tx2, counter.clone());
+
+        // get actix system context if it is set
+        let actix_system = System::try_current();
+
+        // get tokio runtime handle if it is set
+        let tokio_handle = tokio::runtime::Handle::try_current().ok();
+
+        // service factories initialization channel
+        let (factory_tx, factory_rx) = std::sync::mpsc::sync_channel::<io::Result<()>>(1);
+
+        // outline of following code:
+        //
+        // if system exists
+        //   if uring enabled
+        //     start arbiter using uring method
+        //   else
+        //     start arbiter with regular tokio
+        // else
+        //   if uring enabled
+        //     start uring in spawned thread
+        //   else
+        //     start regular tokio in spawned thread
+
+        // every worker runs in it's own thread and tokio runtime.
         // use a custom tokio runtime builder to change the settings of runtime.
-        Arbiter::with_tokio_rt(move || {
-            tokio::runtime::Builder::new_current_thread()
-                .enable_all()
-                .max_blocking_threads(config.max_blocking_threads)
-                .build()
-                .unwrap()
-        })
-        .spawn(async move {
-            availability.set(false);
-            let mut wrk = MAX_CONNS_COUNTER.with(move |conns| ServerWorker {
-                rx,
-                rx2,
-                availability,
-                factories,
-                config,
-                services: Vec::new(),
-                conns: conns.clone(),
-                state: WorkerState::Unavailable,
-            });
 
-            let fut = wrk
-                .factories
-                .iter()
-                .enumerate()
-                .map(|(idx, factory)| {
-                    let fut = factory.create();
-                    async move {
-                        fut.await.map(|r| {
-                            r.into_iter().map(|(t, s)| (idx, t, s)).collect::<Vec<_>>()
-                        })
-                    }
-                })
-                .collect::<Vec<_>>();
+        match (actix_system, tokio_handle) {
+            (None, None) => {
+                panic!("No runtime detected. Start a Tokio (or Actix) runtime.");
+            }
 
-            // a second spawn to make sure worker future runs as non boxed future.
-            // As Arbiter::spawn would box the future before send it to arbiter.
-            spawn(async move {
-                let res: Result<Vec<_>, _> = join_all(fut).await.into_iter().collect();
-                match res {
-                    Ok(services) => {
-                        for item in services {
-                            for (factory, token, service) in item {
-                                assert_eq!(token.0, wrk.services.len());
-                                wrk.services.push(WorkerService {
-                                    factory,
-                                    service,
-                                    status: WorkerServiceStatus::Unavailable,
-                                });
+            // no actix system
+            (None, Some(rt_handle)) => {
+                std::thread::Builder::new()
+                    .name(format!("actix-server worker {}", idx))
+                    .spawn(move || {
+                        let (worker_stopped_tx, worker_stopped_rx) = oneshot::channel();
+
+                        // local set for running service init futures and worker services
+                        let ls = tokio::task::LocalSet::new();
+
+                        // init services using existing Tokio runtime (so probably on main thread)
+                        let services = rt_handle.block_on(ls.run_until(async {
+                            let mut services = Vec::new();
+
+                            for (idx, factory) in factories.iter().enumerate() {
+                                match factory.create().await {
+                                    Ok((token, svc)) => services.push((idx, token, svc)),
+
+                                    Err(err) => {
+                                        error!("Can not start worker: {:?}", err);
+                                        return Err(io::Error::new(
+                                            io::ErrorKind::Other,
+                                            format!("can not start server service {}", idx),
+                                        ));
+                                    }
+                                }
+                            }
+
+                            Ok(services)
+                        }));
+
+                        let services = match services {
+                            Ok(services) => {
+                                factory_tx.send(Ok(())).unwrap();
+                                services
+                            }
+                            Err(err) => {
+                                factory_tx.send(Err(err)).unwrap();
+                                return;
+                            }
+                        };
+
+                        let worker_services = wrap_worker_services(services);
+
+                        let worker_fut = async move {
+                            // spawn to make sure ServerWorker runs as non boxed future.
+                            spawn(async move {
+                                ServerWorker {
+                                    conn_rx,
+                                    stop_rx,
+                                    services: worker_services.into_boxed_slice(),
+                                    counter: WorkerCounter::new(idx, waker_queue, counter),
+                                    factories: factories.into_boxed_slice(),
+                                    state: WorkerState::default(),
+                                    shutdown_timeout: config.shutdown_timeout,
+                                }
+                                .await;
+
+                                // wake up outermost task waiting for shutdown
+                                worker_stopped_tx.send(()).unwrap();
+                            });
+
+                            worker_stopped_rx.await.unwrap();
+                        };
+
+                        #[cfg(all(target_os = "linux", feature = "io-uring"))]
+                        {
+                            // TODO: pass max blocking thread config when tokio-uring enable configuration
+                            // on building runtime.
+                            let _ = config.max_blocking_threads;
+                            tokio_uring::start(worker_fut);
+                        }
+
+                        #[cfg(not(all(target_os = "linux", feature = "io-uring")))]
+                        {
+                            let rt = tokio::runtime::Builder::new_current_thread()
+                                .enable_all()
+                                .max_blocking_threads(config.max_blocking_threads)
+                                .build()
+                                .unwrap();
+
+                            rt.block_on(ls.run_until(worker_fut));
+                        }
+                    })
+                    .expect("cannot spawn server worker thread");
+            }
+
+            // with actix system
+            (Some(_sys), _) => {
+                #[cfg(all(target_os = "linux", feature = "io-uring"))]
+                let arbiter = {
+                    // TODO: pass max blocking thread config when tokio-uring enable configuration
+                    // on building runtime.
+                    let _ = config.max_blocking_threads;
+                    Arbiter::new()
+                };
+
+                #[cfg(not(all(target_os = "linux", feature = "io-uring")))]
+                let arbiter = {
+                    Arbiter::with_tokio_rt(move || {
+                        tokio::runtime::Builder::new_current_thread()
+                            .enable_all()
+                            .max_blocking_threads(config.max_blocking_threads)
+                            .build()
+                            .unwrap()
+                    })
+                };
+
+                arbiter.spawn(async move {
+                    // spawn_local to run !Send future tasks.
+                    spawn(async move {
+                        let mut services = Vec::new();
+
+                        for (idx, factory) in factories.iter().enumerate() {
+                            match factory.create().await {
+                                Ok((token, svc)) => services.push((idx, token, svc)),
+
+                                Err(err) => {
+                                    error!("Can not start worker: {:?}", err);
+                                    Arbiter::current().stop();
+                                    factory_tx
+                                        .send(Err(io::Error::new(
+                                            io::ErrorKind::Other,
+                                            format!("can not start server service {}", idx),
+                                        )))
+                                        .unwrap();
+                                    return;
+                                }
                             }
                         }
-                    }
-                    Err(e) => {
-                        error!("Can not start worker: {:?}", e);
-                        Arbiter::current().stop();
-                    }
-                }
-                wrk.await
-            });
-        });
 
-        WorkerHandle::new(idx, tx1, tx2, avail)
+                        factory_tx.send(Ok(())).unwrap();
+
+                        let worker_services = wrap_worker_services(services);
+
+                        // spawn to make sure ServerWorker runs as non boxed future.
+                        spawn(ServerWorker {
+                            conn_rx,
+                            stop_rx,
+                            services: worker_services.into_boxed_slice(),
+                            counter: WorkerCounter::new(idx, waker_queue, counter),
+                            factories: factories.into_boxed_slice(),
+                            state: Default::default(),
+                            shutdown_timeout: config.shutdown_timeout,
+                        });
+                    });
+                });
+            }
+        };
+
+        // wait for service factories initialization
+        factory_rx.recv().unwrap()?;
+
+        Ok(pair)
+    }
+
+    fn restart_service(&mut self, idx: usize, factory_id: usize) {
+        let factory = &self.factories[factory_id];
+        trace!("Service {:?} failed, restarting", factory.name(idx));
+        self.services[idx].status = WorkerServiceStatus::Restarting;
+        self.state = WorkerState::Restarting(Restart {
+            factory_id,
+            token: idx,
+            fut: factory.create(),
+        });
     }
 
     fn shutdown(&mut self, force: bool) {
-        if force {
-            self.services.iter_mut().for_each(|srv| {
-                if srv.status == WorkerServiceStatus::Available {
-                    srv.status = WorkerServiceStatus::Stopped;
-                }
+        self.services
+            .iter_mut()
+            .filter(|srv| srv.status == WorkerServiceStatus::Available)
+            .for_each(|srv| {
+                srv.status = if force {
+                    WorkerServiceStatus::Stopped
+                } else {
+                    WorkerServiceStatus::Stopping
+                };
             });
-        } else {
-            self.services.iter_mut().for_each(move |srv| {
-                if srv.status == WorkerServiceStatus::Available {
-                    srv.status = WorkerServiceStatus::Stopping;
-                }
-            });
-        }
     }
 
-    fn check_readiness(&mut self, cx: &mut Context<'_>) -> Result<bool, (Token, usize)> {
-        let mut ready = self.conns.available(cx);
-        let mut failed = None;
+    fn check_readiness(&mut self, cx: &mut Context<'_>) -> Result<bool, (usize, usize)> {
+        let mut ready = true;
         for (idx, srv) in self.services.iter_mut().enumerate() {
             if srv.status == WorkerServiceStatus::Available
                 || srv.status == WorkerServiceStatus::Unavailable
@@ -290,7 +509,7 @@ impl ServerWorker {
                         if srv.status == WorkerServiceStatus::Unavailable {
                             trace!(
                                 "Service {:?} is available",
-                                self.factories[srv.factory].name(Token(idx))
+                                self.factories[srv.factory_idx].name(idx)
                             );
                             srv.status = WorkerServiceStatus::Available;
                         }
@@ -301,7 +520,7 @@ impl ServerWorker {
                         if srv.status == WorkerServiceStatus::Available {
                             trace!(
                                 "Service {:?} is unavailable",
-                                self.factories[srv.factory].name(Token(idx))
+                                self.factories[srv.factory_idx].name(idx)
                             );
                             srv.status = WorkerServiceStatus::Unavailable;
                         }
@@ -309,175 +528,198 @@ impl ServerWorker {
                     Poll::Ready(Err(_)) => {
                         error!(
                             "Service {:?} readiness check returned error, restarting",
-                            self.factories[srv.factory].name(Token(idx))
+                            self.factories[srv.factory_idx].name(idx)
                         );
-                        failed = Some((Token(idx), srv.factory));
                         srv.status = WorkerServiceStatus::Failed;
+                        return Err((idx, srv.factory_idx));
                     }
                 }
             }
         }
-        if let Some(idx) = failed {
-            Err(idx)
-        } else {
-            Ok(ready)
-        }
+
+        Ok(ready)
     }
 }
 
 enum WorkerState {
     Available,
     Unavailable,
-    Restarting(
-        usize,
-        Token,
-        LocalBoxFuture<'static, Result<Vec<(Token, BoxedServerService)>, ()>>,
-    ),
-    Shutdown(
-        Pin<Box<Sleep>>,
-        Pin<Box<Sleep>>,
-        Option<oneshot::Sender<bool>>,
-    ),
+    Restarting(Restart),
+    Shutdown(Shutdown),
+}
+
+struct Restart {
+    factory_id: usize,
+    token: usize,
+    fut: LocalBoxFuture<'static, Result<(usize, BoxedServerService), ()>>,
+}
+
+/// State necessary for server shutdown.
+struct Shutdown {
+    // Interval for checking the shutdown progress.
+    timer: Pin<Box<Sleep>>,
+
+    /// Start time of shutdown.
+    start_from: Instant,
+
+    /// Notify caller of the shutdown outcome (graceful/force).
+    tx: oneshot::Sender<bool>,
+}
+
+impl Default for WorkerState {
+    fn default() -> Self {
+        Self::Unavailable
+    }
+}
+
+impl Drop for ServerWorker {
+    fn drop(&mut self) {
+        Arbiter::try_current().as_ref().map(ArbiterHandle::stop);
+    }
 }
 
 impl Future for ServerWorker {
     type Output = ();
 
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let this = self.as_mut().get_mut();
+
         // `StopWorker` message handler
-        if let Poll::Ready(Some(StopCommand { graceful, result })) =
-            Pin::new(&mut self.rx2).poll_recv(cx)
+        if let Poll::Ready(Some(Stop { graceful, tx })) =
+            Pin::new(&mut this.stop_rx).poll_recv(cx)
         {
-            self.availability.set(false);
-            let num = num_connections();
+            let num = this.counter.total();
             if num == 0 {
-                info!("Shutting down worker, 0 connections");
-                let _ = result.send(true);
+                info!("Shutting down idle worker");
+                let _ = tx.send(true);
                 return Poll::Ready(());
             } else if graceful {
-                self.shutdown(false);
-                let num = num_connections();
-                if num != 0 {
-                    info!("Graceful worker shutdown, {} connections", num);
-                    self.state = WorkerState::Shutdown(
-                        Box::pin(sleep(Duration::from_secs(1))),
-                        Box::pin(sleep(self.config.shutdown_timeout)),
-                        Some(result),
-                    );
-                } else {
-                    let _ = result.send(true);
-                    return Poll::Ready(());
-                }
+                info!("Graceful worker shutdown; finishing {} connections", num);
+                this.shutdown(false);
+
+                this.state = WorkerState::Shutdown(Shutdown {
+                    timer: Box::pin(sleep(Duration::from_secs(1))),
+                    start_from: Instant::now(),
+                    tx,
+                });
             } else {
-                info!("Force shutdown worker, {} connections", num);
-                self.shutdown(true);
-                let _ = result.send(false);
+                info!("Force shutdown worker, closing {} connections", num);
+                this.shutdown(true);
+
+                let _ = tx.send(false);
                 return Poll::Ready(());
             }
         }
 
-        match self.state {
-            WorkerState::Unavailable => match self.check_readiness(cx) {
+        match this.state {
+            WorkerState::Unavailable => match this.check_readiness(cx) {
                 Ok(true) => {
-                    self.state = WorkerState::Available;
-                    self.availability.set(true);
+                    this.state = WorkerState::Available;
                     self.poll(cx)
                 }
                 Ok(false) => Poll::Pending,
                 Err((token, idx)) => {
-                    trace!(
-                        "Service {:?} failed, restarting",
-                        self.factories[idx].name(token)
-                    );
-                    self.services[token.0].status = WorkerServiceStatus::Restarting;
-                    self.state =
-                        WorkerState::Restarting(idx, token, self.factories[idx].create());
+                    this.restart_service(token, idx);
                     self.poll(cx)
                 }
             },
-            WorkerState::Restarting(idx, token, ref mut fut) => {
-                match fut.as_mut().poll(cx) {
-                    Poll::Ready(Ok(item)) => {
-                        // only interest in the first item?
-                        if let Some((token, service)) = item.into_iter().next() {
-                            trace!(
-                                "Service {:?} has been restarted",
-                                self.factories[idx].name(token)
-                            );
-                            self.services[token.0].created(service);
-                            self.state = WorkerState::Unavailable;
-                            return self.poll(cx);
-                        }
-                    }
-                    Poll::Ready(Err(_)) => {
+            WorkerState::Restarting(ref mut restart) => {
+                let factory_id = restart.factory_id;
+                let token = restart.token;
+
+                let (token_new, service) = ready!(restart.fut.as_mut().poll(cx))
+                    .unwrap_or_else(|_| {
                         panic!(
                             "Can not restart {:?} service",
-                            self.factories[idx].name(token)
-                        );
-                    }
-                    Poll::Pending => return Poll::Pending,
-                }
+                            this.factories[factory_id].name(token)
+                        )
+                    });
+
+                assert_eq!(token, token_new);
+
+                trace!(
+                    "Service {:?} has been restarted",
+                    this.factories[factory_id].name(token)
+                );
+
+                this.services[token].created(service);
+                this.state = WorkerState::Unavailable;
+
                 self.poll(cx)
             }
-            WorkerState::Shutdown(ref mut t1, ref mut t2, ref mut tx) => {
-                let num = num_connections();
-                if num == 0 {
-                    let _ = tx.take().unwrap().send(true);
-                    Arbiter::current().stop();
-                    return Poll::Ready(());
+            WorkerState::Shutdown(ref mut shutdown) => {
+                // drop all pending connections in rx channel.
+                while let Poll::Ready(Some(conn)) = Pin::new(&mut this.conn_rx).poll_recv(cx) {
+                    // WorkerCounterGuard is needed as Accept thread has incremented counter.
+                    // It's guard's job to decrement the counter together with drop of Conn.
+                    let guard = this.counter.guard();
+                    drop((conn, guard));
                 }
 
-                // check graceful timeout
-                if Pin::new(t2).poll(cx).is_ready() {
-                    let _ = tx.take().unwrap().send(false);
-                    self.shutdown(true);
-                    Arbiter::current().stop();
-                    return Poll::Ready(());
-                }
+                // wait for 1 second
+                ready!(shutdown.timer.as_mut().poll(cx));
 
-                // sleep for 1 second and then check again
-                if t1.as_mut().poll(cx).is_ready() {
-                    *t1 = Box::pin(sleep(Duration::from_secs(1)));
-                    let _ = t1.as_mut().poll(cx);
-                }
+                if this.counter.total() == 0 {
+                    // graceful shutdown
+                    if let WorkerState::Shutdown(shutdown) = mem::take(&mut this.state) {
+                        let _ = shutdown.tx.send(true);
+                    }
 
-                Poll::Pending
+                    Poll::Ready(())
+                } else if shutdown.start_from.elapsed() >= this.shutdown_timeout {
+                    // timeout forceful shutdown
+                    if let WorkerState::Shutdown(shutdown) = mem::take(&mut this.state) {
+                        let _ = shutdown.tx.send(false);
+                    }
+
+                    Poll::Ready(())
+                } else {
+                    // reset timer and wait for 1 second
+                    let time = Instant::now() + Duration::from_secs(1);
+                    shutdown.timer.as_mut().reset(time);
+                    shutdown.timer.as_mut().poll(cx)
+                }
             }
             // actively poll stream and handle worker command
             WorkerState::Available => loop {
-                match self.check_readiness(cx) {
-                    Ok(true) => (),
+                match this.check_readiness(cx) {
+                    Ok(true) => {}
                     Ok(false) => {
                         trace!("Worker is unavailable");
-                        self.availability.set(false);
-                        self.state = WorkerState::Unavailable;
+                        this.state = WorkerState::Unavailable;
                         return self.poll(cx);
                     }
                     Err((token, idx)) => {
-                        trace!(
-                            "Service {:?} failed, restarting",
-                            self.factories[idx].name(token)
-                        );
-                        self.availability.set(false);
-                        self.services[token.0].status = WorkerServiceStatus::Restarting;
-                        self.state =
-                            WorkerState::Restarting(idx, token, self.factories[idx].create());
+                        this.restart_service(token, idx);
                         return self.poll(cx);
                     }
                 }
 
-                match Pin::new(&mut self.rx).poll_recv(cx) {
-                    // handle incoming io stream
-                    Poll::Ready(Some(WorkerCommand(msg))) => {
-                        let guard = self.conns.get();
-                        let _ = self.services[msg.token.0]
-                            .service
-                            .call((Some(guard), msg.io));
+                // handle incoming io stream
+                match ready!(Pin::new(&mut this.conn_rx).poll_recv(cx)) {
+                    Some(msg) => {
+                        let guard = this.counter.guard();
+                        let _ = this.services[msg.token].service.call((guard, msg.io));
                     }
-                    Poll::Pending => return Poll::Pending,
-                    Poll::Ready(None) => return Poll::Ready(()),
+                    None => return Poll::Ready(()),
                 };
             },
         }
     }
 }
+
+fn wrap_worker_services(
+    services: Vec<(usize, usize, BoxedServerService)>,
+) -> Vec<WorkerService> {
+    services
+        .into_iter()
+        .fold(Vec::new(), |mut services, (idx, token, service)| {
+            assert_eq!(token, services.len());
+            services.push(WorkerService {
+                factory_idx: idx,
+                service,
+                status: WorkerServiceStatus::Unavailable,
+            });
+            services
+        })
+}

actix-server/tests/test_server.rs

@@ -1,19 +1,19 @@
-use std::sync::atomic::{AtomicUsize, Ordering::Relaxed};
-use std::sync::{mpsc, Arc};
-use std::{net, thread, time};
+use std::{
+    net,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        mpsc, Arc,
+    },
+    thread,
+    time::Duration,
+};
 
-use actix_server::Server;
+use actix_rt::{net::TcpStream, time::sleep};
+use actix_server::{Server, TestServer};
 use actix_service::fn_service;
-use actix_utils::future::ok;
-use futures_util::future::lazy;
 
 fn unused_addr() -> net::SocketAddr {
-    let addr: net::SocketAddr = "127.0.0.1:0".parse().unwrap();
-    let socket = mio::net::TcpSocket::new_v4().unwrap();
-    socket.bind(addr).unwrap();
-    socket.set_reuseaddr(true).unwrap();
-    let tcp = socket.listen(32).unwrap();
-    tcp.local_addr().unwrap()
+    TestServer::unused_addr()
 }
 
 #[test]
@@ -22,70 +22,111 @@ fn test_bind() {
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new();
-        let srv = sys.block_on(lazy(|_| {
-            Server::build()
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
                 .workers(1)
                 .disable_signals()
-                .bind("test", addr, move || fn_service(|_| ok::<_, ()>(())))
-                .unwrap()
-                .run()
-        }));
+                .bind("test", addr, move || {
+                    fn_service(|_| async { Ok::<_, ()>(()) })
+                })?
+                .run();
 
-        let _ = tx.send((srv, actix_rt::System::current()));
-        let _ = sys.run();
+            let _ = tx.send(srv.handle());
+
+            srv.await
+        })
     });
-    let (_, sys) = rx.recv().unwrap();
+    let srv = rx.recv().unwrap();
 
-    thread::sleep(time::Duration::from_millis(500));
+    thread::sleep(Duration::from_millis(500));
     assert!(net::TcpStream::connect(addr).is_ok());
-    sys.stop();
-    let _ = h.join();
+
+    let _ = srv.stop(true);
+    h.join().unwrap().unwrap();
+}
+
+#[test]
+fn plain_tokio_runtime() {
+    let addr = unused_addr();
+    let (tx, rx) = mpsc::channel();
+
+    let h = thread::spawn(move || {
+        let rt = tokio::runtime::Builder::new_current_thread()
+            .enable_all()
+            .build()
+            .unwrap();
+
+        rt.block_on(async {
+            let srv = Server::build()
+                .workers(1)
+                .disable_signals()
+                .bind("test", addr, move || {
+                    fn_service(|_| async { Ok::<_, ()>(()) })
+                })?
+                .run();
+
+            tx.send(srv.handle()).unwrap();
+
+            srv.await
+        })
+    });
+
+    let srv = rx.recv().unwrap();
+
+    thread::sleep(Duration::from_millis(500));
+    assert!(net::TcpStream::connect(addr).is_ok());
+
+    let _ = srv.stop(true);
+    h.join().unwrap().unwrap();
 }
 
 #[test]
 fn test_listen() {
     let addr = unused_addr();
+    let lst = net::TcpListener::bind(addr).unwrap();
+
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new();
-        let lst = net::TcpListener::bind(addr).unwrap();
-        sys.block_on(async {
-            Server::build()
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
                 .disable_signals()
                 .workers(1)
-                .listen("test", lst, move || fn_service(|_| ok::<_, ()>(())))
-                .unwrap()
+                .listen("test", lst, move || {
+                    fn_service(|_| async { Ok::<_, ()>(()) })
+                })?
                 .run();
-            let _ = tx.send(actix_rt::System::current());
-        });
-        let _ = sys.run();
-    });
-    let sys = rx.recv().unwrap();
 
-    thread::sleep(time::Duration::from_millis(500));
+            let _ = tx.send(srv.handle());
+
+            srv.await
+        })
+    });
+
+    let srv = rx.recv().unwrap();
+
+    thread::sleep(Duration::from_millis(500));
     assert!(net::TcpStream::connect(addr).is_ok());
-    sys.stop();
-    let _ = h.join();
+
+    let _ = srv.stop(true);
+    h.join().unwrap().unwrap();
 }
 
 #[test]
 #[cfg(unix)]
 fn test_start() {
+    use std::io::Read;
+
     use actix_codec::{BytesCodec, Framed};
-    use actix_rt::net::TcpStream;
     use bytes::Bytes;
     use futures_util::sink::SinkExt;
-    use std::io::Read;
 
     let addr = unused_addr();
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new();
-        let srv = sys.block_on(lazy(|_| {
-            Server::build()
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
                 .backlog(100)
                 .disable_signals()
                 .bind("test", addr, move || {
@@ -94,13 +135,13 @@ fn test_start() {
                         f.send(Bytes::from_static(b"test")).await.unwrap();
                         Ok::<_, ()>(())
                     })
-                })
-                .unwrap()
-                .run()
-        }));
+                })?
+                .run();
 
-        let _ = tx.send((srv, actix_rt::System::current()));
-        let _ = sys.run();
+            let _ = tx.send((srv.handle(), actix_rt::System::current()));
+
+            srv.await
+        })
     });
 
     let (srv, sys) = rx.recv().unwrap();
@@ -112,16 +153,16 @@ fn test_start() {
 
     // pause
     let _ = srv.pause();
-    thread::sleep(time::Duration::from_millis(200));
+    thread::sleep(Duration::from_millis(200));
     let mut conn = net::TcpStream::connect(addr).unwrap();
-    conn.set_read_timeout(Some(time::Duration::from_millis(100)))
+    conn.set_read_timeout(Some(Duration::from_millis(100)))
         .unwrap();
     let res = conn.read_exact(&mut buf);
     assert!(res.is_err());
 
     // resume
     let _ = srv.resume();
-    thread::sleep(time::Duration::from_millis(100));
+    thread::sleep(Duration::from_millis(100));
     assert!(net::TcpStream::connect(addr).is_ok());
     assert!(net::TcpStream::connect(addr).is_ok());
     assert!(net::TcpStream::connect(addr).is_ok());
@@ -133,61 +174,340 @@ fn test_start() {
 
     // stop
     let _ = srv.stop(false);
-    thread::sleep(time::Duration::from_millis(100));
-    assert!(net::TcpStream::connect(addr).is_err());
-
-    thread::sleep(time::Duration::from_millis(100));
     sys.stop();
-    let _ = h.join();
+    h.join().unwrap().unwrap();
+
+    thread::sleep(Duration::from_secs(1));
+    assert!(net::TcpStream::connect(addr).is_err());
+}
+
+#[actix_rt::test]
+async fn test_max_concurrent_connections() {
+    // Note:
+    // A tcp listener would accept connects based on it's backlog setting.
+    //
+    // The limit test on the other hand is only for concurrent tcp stream limiting a work
+    // thread accept.
+
+    use tokio::io::AsyncWriteExt;
+
+    let addr = unused_addr();
+    let (tx, rx) = mpsc::channel();
+
+    let counter = Arc::new(AtomicUsize::new(0));
+    let counter_clone = counter.clone();
+
+    let max_conn = 3;
+
+    let h = thread::spawn(move || {
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
+                // Set a relative higher backlog.
+                .backlog(12)
+                // max connection for a worker is 3.
+                .max_concurrent_connections(max_conn)
+                .workers(1)
+                .disable_signals()
+                .bind("test", addr, move || {
+                    let counter = counter.clone();
+                    fn_service(move |_io: TcpStream| {
+                        let counter = counter.clone();
+                        async move {
+                            counter.fetch_add(1, Ordering::SeqCst);
+                            sleep(Duration::from_secs(20)).await;
+                            counter.fetch_sub(1, Ordering::SeqCst);
+                            Ok::<(), ()>(())
+                        }
+                    })
+                })?
+                .run();
+
+            let _ = tx.send((srv.handle(), actix_rt::System::current()));
+
+            srv.await
+        })
+    });
+
+    let (srv, sys) = rx.recv().unwrap();
+
+    let mut conns = vec![];
+
+    for _ in 0..12 {
+        let conn = tokio::net::TcpStream::connect(addr).await.unwrap();
+        conns.push(conn);
+    }
+
+    sleep(Duration::from_secs(5)).await;
+
+    // counter would remain at 3 even with 12 successful connection.
+    // and 9 of them remain in backlog.
+    assert_eq!(max_conn, counter_clone.load(Ordering::SeqCst));
+
+    for mut conn in conns {
+        conn.shutdown().await.unwrap();
+    }
+
+    srv.stop(false).await;
+    sys.stop();
+    h.join().unwrap().unwrap();
+}
+
+#[actix_rt::test]
+async fn test_service_restart() {
+    use std::task::{Context, Poll};
+
+    use actix_service::{fn_factory, Service};
+    use futures_core::future::LocalBoxFuture;
+    use tokio::io::AsyncWriteExt;
+
+    struct TestService(Arc<AtomicUsize>);
+
+    impl Service<TcpStream> for TestService {
+        type Response = ();
+        type Error = ();
+        type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+        fn poll_ready(&self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+            let TestService(ref counter) = self;
+            let c = counter.fetch_add(1, Ordering::SeqCst);
+            // Force the service to restart on first readiness check.
+            if c > 0 {
+                Poll::Ready(Ok(()))
+            } else {
+                Poll::Ready(Err(()))
+            }
+        }
+
+        fn call(&self, _: TcpStream) -> Self::Future {
+            Box::pin(async { Ok(()) })
+        }
+    }
+
+    let addr1 = unused_addr();
+    let addr2 = unused_addr();
+    let (tx, rx) = mpsc::channel();
+    let num = Arc::new(AtomicUsize::new(0));
+    let num2 = Arc::new(AtomicUsize::new(0));
+
+    let num_clone = num.clone();
+    let num2_clone = num2.clone();
+
+    let h = thread::spawn(move || {
+        let num = num.clone();
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
+                .backlog(1)
+                .disable_signals()
+                .bind("addr1", addr1, move || {
+                    let num = num.clone();
+                    fn_factory(move || {
+                        let num = num.clone();
+                        async move { Ok::<_, ()>(TestService(num)) }
+                    })
+                })?
+                .bind("addr2", addr2, move || {
+                    let num2 = num2.clone();
+                    fn_factory(move || {
+                        let num2 = num2.clone();
+                        async move { Ok::<_, ()>(TestService(num2)) }
+                    })
+                })?
+                .workers(1)
+                .run();
+
+            let _ = tx.send(srv.handle());
+            srv.await
+        })
+    });
+
+    let srv = rx.recv().unwrap();
+
+    for _ in 0..5 {
+        TcpStream::connect(addr1)
+            .await
+            .unwrap()
+            .shutdown()
+            .await
+            .unwrap();
+        TcpStream::connect(addr2)
+            .await
+            .unwrap()
+            .shutdown()
+            .await
+            .unwrap();
+    }
+
+    sleep(Duration::from_secs(3)).await;
+
+    assert!(num_clone.load(Ordering::SeqCst) > 5);
+    assert!(num2_clone.load(Ordering::SeqCst) > 5);
+
+    let _ = srv.stop(false);
+    h.join().unwrap().unwrap();
+}
+
+#[ignore] // non-deterministic on CI
+#[actix_rt::test]
+async fn worker_restart() {
+    use actix_service::{Service, ServiceFactory};
+    use futures_core::future::LocalBoxFuture;
+    use tokio::io::{AsyncReadExt, AsyncWriteExt};
+
+    struct TestServiceFactory(Arc<AtomicUsize>);
+
+    impl ServiceFactory<TcpStream> for TestServiceFactory {
+        type Response = ();
+        type Error = ();
+        type Config = ();
+        type Service = TestService;
+        type InitError = ();
+        type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+
+        fn new_service(&self, _: Self::Config) -> Self::Future {
+            let counter = self.0.fetch_add(1, Ordering::Relaxed);
+
+            Box::pin(async move { Ok(TestService(counter)) })
+        }
+    }
+
+    struct TestService(usize);
+
+    impl Service<TcpStream> for TestService {
+        type Response = ();
+        type Error = ();
+        type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+        actix_service::always_ready!();
+
+        fn call(&self, stream: TcpStream) -> Self::Future {
+            let counter = self.0;
+
+            let mut stream = stream.into_std().unwrap();
+            use std::io::Write;
+            let str = counter.to_string();
+            let buf = str.as_bytes();
+
+            let mut written = 0;
+
+            while written < buf.len() {
+                if let Ok(n) = stream.write(&buf[written..]) {
+                    written += n;
+                }
+            }
+            stream.flush().unwrap();
+            stream.shutdown(net::Shutdown::Write).unwrap();
+
+            // force worker 2 to restart service once.
+            if counter == 2 {
+                panic!("panic on purpose")
+            } else {
+                Box::pin(async { Ok(()) })
+            }
+        }
+    }
+
+    let addr = unused_addr();
+    let (tx, rx) = mpsc::channel();
+
+    let counter = Arc::new(AtomicUsize::new(1));
+    let h = thread::spawn(move || {
+        let counter = counter.clone();
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
+                .disable_signals()
+                .bind("addr", addr, move || TestServiceFactory(counter.clone()))?
+                .workers(2)
+                .run();
+
+            let _ = tx.send(srv.handle());
+
+            srv.await
+        })
+    });
+
+    let srv = rx.recv().unwrap();
+
+    sleep(Duration::from_secs(3)).await;
+
+    let mut buf = [0; 8];
+
+    // worker 1 would not restart and return it's id consistently.
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("1", id);
+    stream.shutdown().await.unwrap();
+
+    // worker 2 dead after return response.
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("2", id);
+    stream.shutdown().await.unwrap();
+
+    // request to worker 1
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("1", id);
+    stream.shutdown().await.unwrap();
+
+    // TODO: Remove sleep if it can pass CI.
+    sleep(Duration::from_secs(3)).await;
+
+    // worker 2 restarting and work goes to worker 1.
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("1", id);
+    stream.shutdown().await.unwrap();
+
+    // TODO: Remove sleep if it can pass CI.
+    sleep(Duration::from_secs(3)).await;
+
+    // worker 2 restarted but worker 1 was still the next to accept connection.
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("1", id);
+    stream.shutdown().await.unwrap();
+
+    // TODO: Remove sleep if it can pass CI.
+    sleep(Duration::from_secs(3)).await;
+
+    // worker 2 accept connection again but it's id is 3.
+    let mut stream = TcpStream::connect(addr).await.unwrap();
+    let n = stream.read(&mut buf).await.unwrap();
+    let id = String::from_utf8_lossy(&buf[0..n]);
+    assert_eq!("3", id);
+    stream.shutdown().await.unwrap();
+
+    let _ = srv.stop(false);
+    h.join().unwrap().unwrap();
 }
 
 #[test]
-fn test_configure() {
-    let addr1 = unused_addr();
-    let addr2 = unused_addr();
-    let addr3 = unused_addr();
-    let (tx, rx) = mpsc::channel();
-    let num = Arc::new(AtomicUsize::new(0));
-    let num2 = num.clone();
+#[should_panic]
+fn no_runtime() {
+    // test set up in a way that would prevent time out if support for runtime-less init was added
 
-    let h = thread::spawn(move || {
-        let num = num2.clone();
-        let sys = actix_rt::System::new();
-        let srv = sys.block_on(lazy(|_| {
-            Server::build()
-                .disable_signals()
-                .configure(move |cfg| {
-                    let num = num.clone();
-                    let lst = net::TcpListener::bind(addr3).unwrap();
-                    cfg.bind("addr1", addr1)
-                        .unwrap()
-                        .bind("addr2", addr2)
-                        .unwrap()
-                        .listen("addr3", lst)
-                        .apply(move |rt| {
-                            let num = num.clone();
-                            rt.service("addr1", fn_service(|_| ok::<_, ()>(())));
-                            rt.service("addr3", fn_service(|_| ok::<_, ()>(())));
-                            rt.on_start(lazy(move |_| {
-                                let _ = num.fetch_add(1, Relaxed);
-                            }))
-                        })
-                })
-                .unwrap()
-                .workers(1)
-                .run()
-        }));
+    let addr = unused_addr();
 
-        let _ = tx.send((srv, actix_rt::System::current()));
-        let _ = sys.run();
-    });
-    let (_, sys) = rx.recv().unwrap();
-    thread::sleep(time::Duration::from_millis(500));
+    let srv = Server::build()
+        .workers(1)
+        .disable_signals()
+        .bind("test", addr, move || {
+            fn_service(|_| async { Ok::<_, ()>(()) })
+        })
+        .unwrap()
+        .run();
 
-    assert!(net::TcpStream::connect(addr1).is_ok());
-    assert!(net::TcpStream::connect(addr2).is_ok());
-    assert!(net::TcpStream::connect(addr3).is_ok());
-    assert_eq!(num.load(Relaxed), 1);
-    sys.stop();
-    let _ = h.join();
+    let rt = tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()
+        .unwrap();
+
+    let _ = srv.handle().stop(true);
+
+    rt.block_on(async { srv.await }).unwrap();
 }

actix-service/CHANGES.md

@@ -3,6 +3,16 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 2.0.1 - 2021-10-11
+* Documentation fix.
+
+
+## 2.0.0 - 2021-04-16
+* Removed pipeline and related structs/functions. [#335]
+
+[#335]: https://github.com/actix/actix-net/pull/335
+
+
 ## 2.0.0-beta.5 - 2021-03-15
 * Add default `Service` trait impl for `Rc<S: Service>` and `&S: Service`. [#288]
 * Add `boxed::rc_service` function for constructing `boxed::RcService` type [#290]
@@ -46,221 +56,124 @@
 
 
 ## 1.0.6 - 2020-08-09
-
-### Fixed
-
 * Removed unsound custom Cell implementation that allowed obtaining several mutable references to
   the same data, which is undefined behavior in Rust and could lead to violations of memory safety. External code could obtain several mutable references to the same data through
   service combinators. Attempts to acquire several mutable references to the same data will instead
   result in a panic.
 
-## [1.0.5] - 2020-01-16
 
-### Fixed
+## 1.0.5 - 2020-01-16
+* Fixed unsoundness in .and_then()/.then() service combinators.
 
-* Fixed unsoundness in .and_then()/.then() service combinators
-
-## [1.0.4] - 2020-01-15
-
-### Fixed
 
+## 1.0.4 - 2020-01-15
 * Revert 1.0.3 change
 
-## [1.0.3] - 2020-01-15
 
-### Fixed
-
-* Fixed unsoundness in `AndThenService` impl
-
-## [1.0.2] - 2020-01-08
-
-### Added
-
-* Add `into_service` helper function
+## 1.0.3 - 2020-01-15
+* Fixed unsoundness in `AndThenService` impl.
 
 
-## [1.0.1] - 2019-12-22
-
-### Changed
-
-* `map_config()` and `unit_config()` accepts `IntoServiceFactory` type
+## 1.0.2 - 2020-01-08
+* Add `into_service` helper function.
 
 
-## [1.0.0] - 2019-12-11
+## 1.0.1 - 2019-12-22
+* `map_config()` and `unit_config()` now accept `IntoServiceFactory` type.
 
-### Added
 
+## 1.0.0 - 2019-12-11
 * Add Clone impl for Apply service
 
 
-## [1.0.0-alpha.4] - 2019-12-08
-
-### Changed
-
+## 1.0.0-alpha.4 - 2019-12-08
 * Renamed `service_fn` to `fn_service`
-
 * Renamed `factory_fn` to `fn_factory`
-
 * Renamed `factory_fn_cfg` to `fn_factory_with_config`
 
 
-## [1.0.0-alpha.3] - 2019-12-06
-
-### Changed
-
+## 1.0.0-alpha.3 - 2019-12-06
 * Add missing Clone impls
-
 * Restore `Transform::map_init_err()` combinator
-
 * Restore `Service/Factory::apply_fn()` in form of `Pipeline/Factory::and_then_apply_fn()`
-
 * Optimize service combinators and futures memory layout
 
 
-## [1.0.0-alpha.2] - 2019-12-02
-
-### Changed
-
+## 1.0.0-alpha.2 - 2019-12-02
 * Use owned config value for service factory
-
 * Renamed BoxedNewService/BoxedService to BoxServiceFactory/BoxService
 
 
-## [1.0.0-alpha.1] - 2019-11-25
-
-### Changed
-
-* Migraded to `std::future`
-
+## 1.0.0-alpha.1 - 2019-11-25
+* Migrated to `std::future`
 * `NewService` renamed to `ServiceFactory`
-
 * Added `pipeline` and `pipeline_factory` function
 
 
-## [0.4.2] - 2019-08-27
-
-### Fixed
-
+## 0.4.2 - 2019-08-27
 * Check service readiness for `new_apply_cfg` combinator
 
 
-## [0.4.1] - 2019-06-06
-
-### Added
-
+## 0.4.1 - 2019-06-06
 * Add `new_apply_cfg` function
 
-## [0.4.0] - 2019-05-12
 
-### Changed
-
-* Use associated type for `NewService` config
-
-* Change `apply_cfg` function
-
-* Renamed helper functions
-
-### Added
-
-* Add `NewService::map_config` and `NewService::unit_config` combinators
+## 0.4.0 - 2019-05-12
+* Add `NewService::map_config` and `NewService::unit_config` combinators.
+* Use associated type for `NewService` config.
+* Change `apply_cfg` function.
+* Renamed helper functions.
 
 
-## [0.3.6] - 2019-04-07
-
-### Changed
-
+## 0.3.6 - 2019-04-07
 * Poll boxed service call result immediately
 
 
-## [0.3.5] - 2019-03-29
-
-### Added
-
-* Add `impl<S: Service> Service for Rc<RefCell<S>>`
+## 0.3.5 - 2019-03-29
+* Add `impl<S: Service> Service for Rc<RefCell<S>>`.
 
 
-## [0.3.4] - 2019-03-12
-
-### Added
-
+## 0.3.4 - 2019-03-12
 * Add `Transform::from_err()` combinator
-
 * Add `apply_fn` helper
-
 * Add `apply_fn_factory` helper
-
 * Add `apply_transform` helper
-
 * Add `apply_cfg` helper
 
 
-## [0.3.3] - 2019-03-09
-
-### Added
-
+## 0.3.3 - 2019-03-09
 * Add `ApplyTransform` new service for transform and new service.
-
-* Add `NewService::apply_cfg()` combinator, allows to use
-  nested `NewService` with different config parameter.
-
-### Changed
-
+* Add `NewService::apply_cfg()` combinator, allows to use nested `NewService` with different config parameter.
 * Revert IntoFuture change
 
 
-## [0.3.2] - 2019-03-04
-
-### Changed
-
+## 0.3.2 - 2019-03-04
 * Change `NewService::Future` and `Transform::Future` to the `IntoFuture` trait.
-
 * Export `AndThenTransform` type
 
 
-## [0.3.1] - 2019-03-04
-
-### Changed
-
+## 0.3.1 - 2019-03-04
 * Simplify Transform trait
 
 
-## [0.3.0] - 2019-03-02
-
-## Added
-
+## 0.3.0 - 2019-03-02
 * Added boxed NewService and Service.
-
-## Changed
-
 * Added `Config` parameter to `NewService` trait.
-
 * Added `Config` parameter to `NewTransform` trait.
 
 
-## [0.2.2] - 2019-02-19
-
-### Added
-
+## 0.2.2 - 2019-02-19
 * Added `NewService` impl for `Rc<S> where S: NewService`
-
 * Added `NewService` impl for `Arc<S> where S: NewService`
 
 
-## [0.2.1] - 2019-02-03
-
-### Changed
-
+## 0.2.1 - 2019-02-03
 * Generalize `.apply` combinator with Transform trait
 
 
-## [0.2.0] - 2019-02-01
-
-### Changed
-
+## 0.2.0 - 2019-02-01
 * Use associated type instead of generic for Service definition.
-
   * Before:
-
     ```rust
     impl Service<Request> for Client {
         type Response = Response;
@@ -268,7 +181,6 @@
     }
     ```
   * After:
-
     ```rust
     impl Service for Client {
         type Request = Request;
@@ -278,50 +190,30 @@
     ```
 
 
-## [0.1.6] - 2019-01-24
-
-### Changed
-
+## 0.1.6 - 2019-01-24
 * Use `FnMut` instead of `Fn` for .apply() and .map() combinators and `FnService` type
-
 * Change `.apply()` error semantic, new service's error is `From<Self::Error>`
 
 
-## [0.1.5] - 2019-01-13
-
-### Changed
-
-* Make `Out::Error` convertable from `T::Error` for apply combinator
+## 0.1.5 - 2019-01-13
+* Make `Out::Error` convertible from `T::Error` for apply combinator
 
 
-## [0.1.4] - 2019-01-11
-
-### Changed
-
+## 0.1.4 - 2019-01-11
 * Use `FnMut` instead of `Fn` for `FnService`
 
 
-## [0.1.3] - 2018-12-12
-
-### Changed
-
+## 0.1.3 - 2018-12-12
 * Split service combinators to separate trait
 
 
-## [0.1.2] - 2018-12-12
-
-### Fixed
-
+## 0.1.2 - 2018-12-12
 * Release future early for `.and_then()` and `.then()` combinators
 
 
-## [0.1.1] - 2018-12-09
-
-### Added
-
-* Added Service impl for Box<S: Service>
+## 0.1.1 - 2018-12-09
+* Added Service impl for `Box<S: Service>`
 
 
-## [0.1.0] - 2018-12-09
-
+## 0.1.0 - 2018-12-09
 * Initial import

actix-service/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "actix-service"
-version = "2.0.0-beta.5"
+version = "2.0.1"
 authors = [
     "Nikolay Kim <fafhrd91@gmail.com>",
     "Rob Ede <robjtede@icloud.com>",
@@ -8,11 +8,8 @@ authors = [
 ]
 description = "Service trait and combinators for representing asynchronous request/response operations."
 keywords = ["network", "framework", "async", "futures", "service"]
-homepage = "https://actix.rs"
-repository = "https://github.com/actix/actix-net.git"
-documentation = "https://docs.rs/actix-service"
-readme = "README.md"
-categories = ["network-programming", "asynchronous"]
+categories = ["network-programming", "asynchronous", "no-std"]
+repository = "https://github.com/actix/actix-net"
 license = "MIT OR Apache-2.0"
 edition = "2018"
 
@@ -22,8 +19,10 @@ path = "src/lib.rs"
 
 [dependencies]
 futures-core = { version = "0.3.7", default-features = false }
+paste = "1"
 pin-project-lite = "0.2"
 
 [dev-dependencies]
 actix-rt = "2.0.0"
+actix-utils = "3.0.0"
 futures-util = { version = "0.3.7", default-features = false }

actix-service/README.md

@@ -3,10 +3,10 @@
 > Service trait and combinators for representing asynchronous request/response operations.
 
 [![crates.io](https://img.shields.io/crates/v/actix-service?label=latest)](https://crates.io/crates/actix-service)
-[![Documentation](https://docs.rs/actix-service/badge.svg?version=2.0.0-beta.5)](https://docs.rs/actix-service/2.0.0-beta.5)
+[![Documentation](https://docs.rs/actix-service/badge.svg?version=2.0.1)](https://docs.rs/actix-service/2.0.1)
 [![Version](https://img.shields.io/badge/rustc-1.46+-ab6000.svg)](https://blog.rust-lang.org/2020/03/12/Rust-1.46.html)
 ![License](https://img.shields.io/crates/l/actix-service.svg)
-[![Dependency Status](https://deps.rs/crate/actix-service/2.0.0-beta.5/status.svg)](https://deps.rs/crate/actix-service/2.0.0-beta.5)
+[![Dependency Status](https://deps.rs/crate/actix-service/2.0.1/status.svg)](https://deps.rs/crate/actix-service/2.0.1)
 ![Download](https://img.shields.io/crates/d/actix-service.svg)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
 

actix-service/examples/clone.rs

@@ -0,0 +1,33 @@
+use std::{future::Future, sync::mpsc, time::Duration};
+
+async fn oracle<F, Fut>(f: F) -> (u32, u32)
+where
+    F: FnOnce() -> Fut + Clone + Send + 'static,
+    Fut: Future<Output = u32> + 'static,
+{
+    let f1 = actix_rt::spawn(f.clone()());
+    let f2 = actix_rt::spawn(f());
+
+    (f1.await.unwrap(), f2.await.unwrap())
+}
+
+#[actix_rt::main]
+async fn main() {
+    let (tx, rx) = mpsc::channel();
+
+    let (r1, r2) = oracle({
+        let tx = tx.clone();
+
+        || async move {
+            tx.send(()).unwrap();
+            4 * 4
+        }
+    })
+    .await;
+    assert_eq!(r1, r2);
+
+    tx.send(()).unwrap();
+
+    rx.recv_timeout(Duration::from_millis(100)).unwrap();
+    rx.recv_timeout(Duration::from_millis(100)).unwrap();
+}

actix-service/src/and_then.rs

@@ -11,11 +11,11 @@ use pin_project_lite::pin_project;
 
 use super::{Service, ServiceFactory};
 
-/// Service for the `and_then` combinator, chaining a computation onto the end
-/// of another service which completes successfully.
+/// Service for the `and_then` combinator, chaining a computation onto the end of another service
+/// which completes successfully.
 ///
 /// This is created by the `Pipeline::and_then` method.
-pub(crate) struct AndThenService<A, B, Req>(Rc<(A, B)>, PhantomData<Req>);
+pub struct AndThenService<A, B, Req>(Rc<(A, B)>, PhantomData<Req>);
 
 impl<A, B, Req> AndThenService<A, B, Req> {
     /// Create new `AndThen` combinator
@@ -64,7 +64,7 @@ where
 }
 
 pin_project! {
-    pub(crate) struct AndThenServiceResponse<A, B, Req>
+    pub struct AndThenServiceResponse<A, B, Req>
     where
         A: Service<Req>,
         B: Service<A::Response, Error = A::Error>,
@@ -117,7 +117,7 @@ where
 }
 
 /// `.and_then()` service factory combinator
-pub(crate) struct AndThenServiceFactory<A, B, Req>
+pub struct AndThenServiceFactory<A, B, Req>
 where
     A: ServiceFactory<Req>,
     A::Config: Clone,
@@ -200,7 +200,7 @@ where
 }
 
 pin_project! {
-    pub(crate) struct AndThenServiceFactoryResponse<A, B, Req>
+    pub struct AndThenServiceFactoryResponse<A, B, Req>
     where
         A: ServiceFactory<Req>,
         B: ServiceFactory<A::Response>,
@@ -272,7 +272,9 @@ mod tests {
     use futures_util::future::lazy;
 
     use crate::{
-        fn_factory, ok, pipeline, pipeline_factory, ready, Ready, Service, ServiceFactory,
+        fn_factory, ok,
+        pipeline::{pipeline, pipeline_factory},
+        ready, Ready, Service, ServiceFactory,
     };
 
     struct Srv1(Rc<Cell<usize>>);

actix-service/src/apply.rs

@@ -214,7 +214,11 @@ mod tests {
     use futures_util::future::lazy;
 
     use super::*;
-    use crate::{ok, pipeline, pipeline_factory, Ready, Service, ServiceFactory};
+    use crate::{
+        ok,
+        pipeline::{pipeline, pipeline_factory},
+        Ready, Service, ServiceFactory,
+    };
 
     #[derive(Clone)]
     struct Srv;

actix-service/src/boxed.rs

@@ -3,26 +3,30 @@
 use alloc::{boxed::Box, rc::Rc};
 use core::{future::Future, pin::Pin};
 
+use paste::paste;
+
 use crate::{Service, ServiceFactory};
 
-/// A boxed future without a Send bound or lifetime parameters.
+/// A boxed future with no send bound or lifetime parameters.
 pub type BoxFuture<T> = Pin<Box<dyn Future<Output = T>>>;
 
 macro_rules! service_object {
     ($name: ident, $type: tt, $fn_name: ident) => {
-        /// Type alias for service trait object.
-        pub type $name<Req, Res, Err> = $type<
-            dyn Service<Req, Response = Res, Error = Err, Future = BoxFuture<Result<Res, Err>>>,
-        >;
+        paste! {
+            #[doc = "Type alias for service trait object using `" $type "`."]
+            pub type $name<Req, Res, Err> = $type<
+                dyn Service<Req, Response = Res, Error = Err, Future = BoxFuture<Result<Res, Err>>>,
+            >;
 
-        /// Create service trait object.
-        pub fn $fn_name<S, Req>(service: S) -> $name<Req, S::Response, S::Error>
-        where
-            S: Service<Req> + 'static,
-            Req: 'static,
-            S::Future: 'static,
-        {
-            $type::new(ServiceWrapper::new(service))
+            #[doc = "Wraps service as a trait object using [`" $name "`]."]
+            pub fn $fn_name<S, Req>(service: S) -> $name<Req, S::Response, S::Error>
+            where
+                S: Service<Req> + 'static,
+                Req: 'static,
+                S::Future: 'static,
+            {
+                $type::new(ServiceWrapper::new(service))
+            }
         }
     };
 }
@@ -56,10 +60,10 @@ where
     }
 }
 
-/// Wrapper for a service factory trait object that will produce a boxed trait object service.
+/// Wrapper for a service factory that will map it's services to boxed trait object services.
 pub struct BoxServiceFactory<Cfg, Req, Res, Err, InitErr>(Inner<Cfg, Req, Res, Err, InitErr>);
 
-/// Create service factory trait object.
+/// Wraps a service factory that returns service trait objects.
 pub fn factory<SF, Req>(
     factory: SF,
 ) -> BoxServiceFactory<SF::Config, Req, SF::Response, SF::Error, SF::InitError>

actix-service/src/ext.rs

@@ -1,8 +1,12 @@
 use crate::{
-    map::Map, map_err::MapErr, transform_err::TransformMapInitErr, Service, ServiceFactory,
-    Transform,
+    and_then::{AndThenService, AndThenServiceFactory},
+    map::Map,
+    map_err::MapErr,
+    transform_err::TransformMapInitErr,
+    IntoService, IntoServiceFactory, Service, ServiceFactory, Transform,
 };
 
+/// An extension trait for [`Service`]s that provides a variety of convenient adapters.
 pub trait ServiceExt<Req>: Service<Req> {
     /// Map this service's output to a different type, returning a new service
     /// of the resulting type.
@@ -36,10 +40,27 @@ pub trait ServiceExt<Req>: Service<Req> {
     {
         MapErr::new(self, f)
     }
+
+    /// Call another service after call to this one has resolved successfully.
+    ///
+    /// This function can be used to chain two services together and ensure that the second service
+    /// isn't called until call to the fist service have finished. Result of the call to the first
+    /// service is used as an input parameter for the second service's call.
+    ///
+    /// Note that this function consumes the receiving service and returns a wrapped version of it.
+    fn and_then<I, S1>(self, service: I) -> AndThenService<Self, S1, Req>
+    where
+        Self: Sized,
+        I: IntoService<S1, Self::Response>,
+        S1: Service<Self::Response, Error = Self::Error>,
+    {
+        AndThenService::new(self, service.into_service())
+    }
 }
 
 impl<S, Req> ServiceExt<Req> for S where S: Service<Req> {}
 
+/// An extension trait for [`ServiceFactory`]s that provides a variety of convenient adapters.
 pub trait ServiceFactoryExt<Req>: ServiceFactory<Req> {
     /// Map this service's output to a different type, returning a new service
     /// of the resulting type.
@@ -68,10 +89,27 @@ pub trait ServiceFactoryExt<Req>: ServiceFactory<Req> {
     {
         crate::map_init_err::MapInitErr::new(self, f)
     }
+
+    /// Call another service after call to this one has resolved successfully.
+    fn and_then<I, SF1>(self, factory: I) -> AndThenServiceFactory<Self, SF1, Req>
+    where
+        Self: Sized,
+        Self::Config: Clone,
+        I: IntoServiceFactory<SF1, Self::Response>,
+        SF1: ServiceFactory<
+            Self::Response,
+            Config = Self::Config,
+            Error = Self::Error,
+            InitError = Self::InitError,
+        >,
+    {
+        AndThenServiceFactory::new(self, factory.into_factory())
+    }
 }
 
 impl<SF, Req> ServiceFactoryExt<Req> for SF where SF: ServiceFactory<Req> {}
 
+/// An extension trait for [`Transform`]s that provides a variety of convenient adapters.
 pub trait TransformExt<S, Req>: Transform<S, Req> {
     /// Return a new `Transform` whose init error is mapped to to a different type.
     fn map_init_err<F, E>(self, f: F) -> TransformMapInitErr<Self, S, Req, F, E>

actix-service/src/fn_service.rs

@@ -52,9 +52,9 @@ pub fn fn_factory<F, Cfg, Srv, Req, Fut, Err>(
     f: F,
 ) -> FnServiceNoConfig<F, Cfg, Srv, Req, Fut, Err>
 where
-    Srv: Service<Req>,
     F: Fn() -> Fut,
     Fut: Future<Output = Result<Srv, Err>>,
+    Srv: Service<Req>,
 {
     FnServiceNoConfig::new(f)
 }

actix-service/src/lib.rs

@@ -1,7 +1,8 @@
 //! See [`Service`] docs for information on this crate's foundational trait.
 
 #![no_std]
-#![deny(rust_2018_idioms, nonstandard_style)]
+#![deny(rust_2018_idioms, nonstandard_style, future_incompatible)]
+#![warn(missing_docs)]
 #![allow(clippy::type_complexity)]
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
@@ -37,7 +38,6 @@ pub use self::apply_cfg::{apply_cfg, apply_cfg_factory};
 pub use self::ext::{ServiceExt, ServiceFactoryExt, TransformExt};
 pub use self::fn_service::{fn_factory, fn_factory_with_config, fn_service};
 pub use self::map_config::{map_config, unit_config};
-pub use self::pipeline::{pipeline, pipeline_factory, Pipeline, PipelineFactory};
 pub use self::transform::{apply, ApplyTransform, Transform};
 
 #[allow(unused_imports)]
@@ -53,8 +53,14 @@ use self::ready::{err, ok, ready, Ready};
 /// async fn(Request) -> Result<Response, Err>
 /// ```
 ///
-/// The `Service` trait just generalizes this form where each parameter is described as an
-/// associated type on the trait. Services can also have mutable state that influence computation.
+/// The `Service` trait just generalizes this form. Requests are defined as a generic type parameter
+/// and responses and other details are defined as associated types on the trait impl. Notice that
+/// this design means that services can receive many request types and converge them to a single
+/// response type.
+///
+/// Services can also have mutable state that influence computation by using a `Cell`, `RefCell`
+/// or `Mutex`. Services intentionally do not take `&mut self` to reduce overhead in the
+/// common cases.
 ///
 /// `Service` provides a symmetric and uniform API; the same abstractions can be used to represent
 /// both clients and servers. Services describe only _transformation_ operations which encourage
@@ -64,23 +70,25 @@ use self::ready::{err, ok, ready, Ready};
 /// ```ignore
 /// struct MyService;
 ///
-/// impl Service for MyService {
-///      type Request = u8;
+/// impl Service<u8> for MyService {
 ///      type Response = u64;
 ///      type Error = MyError;
-///      type Future = Pin<Box<Future<Output=Result<Self::Response, Self::Error>>>>;
+///      type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;
 ///
 ///      fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> { ... }
 ///
-///      fn call(&self, req: Self::Request) -> Self::Future { ... }
+///      fn call(&self, req: u8) -> Self::Future { ... }
 /// }
 /// ```
 ///
 /// Sometimes it is not necessary to implement the Service trait. For example, the above service
-/// could be rewritten as a simple function and passed to [fn_service](fn_service()).
+/// could be rewritten as a simple function and passed to [`fn_service`](fn_service()).
 ///
 /// ```ignore
 /// async fn my_service(req: u8) -> Result<u64, MyError>;
+///
+/// let svc = fn_service(my_service)
+/// svc.call(123)
 /// ```
 pub trait Service<Req> {
     /// Responses given by the service.
@@ -94,13 +102,12 @@ pub trait Service<Req> {
 
     /// Returns `Ready` when the service is able to process requests.
     ///
-    /// If the service is at capacity, then `Pending` is returned and the task
-    /// is notified when the service becomes ready again. This function is
-    /// expected to be called while on a task.
+    /// If the service is at capacity, then `Pending` is returned and the task is notified when the
+    /// service becomes ready again. This function is expected to be called while on a task.
     ///
-    /// This is a **best effort** implementation. False positives are permitted.
-    /// It is permitted for the service to return `Ready` from a `poll_ready`
-    /// call and the next invocation of `call` results in an error.
+    /// This is a best effort implementation. False positives are permitted. It is permitted for
+    /// the service to return `Ready` from a `poll_ready` call and the next invocation of `call`
+    /// results in an error.
     ///
     /// # Notes
     /// 1. `poll_ready` might be called on a different task to `call`.
@@ -109,25 +116,26 @@ pub trait Service<Req> {
 
     /// Process the request and return the response asynchronously.
     ///
-    /// This function is expected to be callable off task. As such,
-    /// implementations should take care to not call `poll_ready`. If the
-    /// service is at capacity and the request is unable to be handled, the
-    /// returned `Future` should resolve to an error.
+    /// This function is expected to be callable off-task. As such, implementations of `call` should
+    /// take care to not call `poll_ready`. If the service is at capacity and the request is unable
+    /// to be handled, the returned `Future` should resolve to an error.
     ///
-    /// Calling `call` without calling `poll_ready` is permitted. The
-    /// implementation must be resilient to this fact.
+    /// Invoking `call` without first invoking `poll_ready` is permitted. Implementations must be
+    /// resilient to this fact.
     fn call(&self, req: Req) -> Self::Future;
 }
 
 /// Factory for creating `Service`s.
 ///
-/// Acts as a service factory. This is useful for cases where new `Service`s
-/// must be produced. One case is a TCP server listener. The listener
-/// accepts new TCP streams, obtains a new `Service` using the
-/// `ServiceFactory` trait, and uses the new `Service` to process inbound
-/// requests on that new TCP stream.
+/// This is useful for cases where new `Service`s must be produced. One case is a TCP
+/// server listener: a listener accepts new connections, constructs a new `Service` for each using
+/// the `ServiceFactory` trait, and uses the new `Service` to process inbound requests on that new
+/// connection.
 ///
 /// `Config` is a service factory configuration type.
+///
+/// Simple factories may be able to use [`fn_factory`] or [`fn_factory_with_config`] to
+/// reduce boilerplate.
 pub trait ServiceFactory<Req> {
     /// Responses given by the created services.
     type Response;
@@ -144,7 +152,7 @@ pub trait ServiceFactory<Req> {
     /// Errors potentially raised while building a service.
     type InitError;
 
-    /// The future of the `Service` instance.
+    /// The future of the `Service` instance.g
     type Future: Future<Output = Result<Self::Service, Self::InitError>>;
 
     /// Create and return a new service asynchronously.

actix-service/src/macros.rs

@@ -1,6 +1,10 @@
-/// A boilerplate implementation of [`Service::poll_ready`] that always signals readiness.
+/// An implementation of [`poll_ready`]() that always signals readiness.
 ///
-/// [`Service::poll_ready`]: crate::Service::poll_ready
+/// This should only be used for basic leaf services that have no concept of un-readiness.
+/// For wrapper or other service types, use [`forward_ready!`] for simple cases or write a bespoke
+/// `poll_ready` implementation.
+///
+/// [`poll_ready`]: crate::Service::poll_ready
 ///
 /// # Examples
 /// ```no_run
@@ -34,12 +38,12 @@ macro_rules! always_ready {
     };
 }
 
-/// A boilerplate implementation of [`Service::poll_ready`] that forwards readiness checks to a
+/// An implementation of [`poll_ready`] that forwards readiness checks to a
 /// named struct field.
 ///
 /// Tuple structs are not supported.
 ///
-/// [`Service::poll_ready`]: crate::Service::poll_ready
+/// [`poll_ready`]: crate::Service::poll_ready
 ///
 /// # Examples
 /// ```no_run

actix-service/src/map_err.rs

@@ -9,26 +9,25 @@ use pin_project_lite::pin_project;
 
 use super::{Service, ServiceFactory};
 
-/// Service for the `map_err` combinator, changing the type of a service's
-/// error.
+/// Service for the `map_err` combinator, changing the type of a service's error.
 ///
 /// This is created by the `ServiceExt::map_err` method.
 pub struct MapErr<S, Req, F, E> {
     service: S,
-    f: F,
+    mapper: F,
     _t: PhantomData<(E, Req)>,
 }
 
 impl<S, Req, F, E> MapErr<S, Req, F, E> {
     /// Create new `MapErr` combinator
-    pub(crate) fn new(service: S, f: F) -> Self
+    pub(crate) fn new(service: S, mapper: F) -> Self
     where
         S: Service<Req>,
         F: Fn(S::Error) -> E,
     {
         Self {
             service,
-            f,
+            mapper,
             _t: PhantomData,
         }
     }
@@ -42,7 +41,7 @@ where
     fn clone(&self) -> Self {
         MapErr {
             service: self.service.clone(),
-            f: self.f.clone(),
+            mapper: self.mapper.clone(),
             _t: PhantomData,
         }
     }
@@ -58,11 +57,11 @@ where
     type Future = MapErrFuture<A, Req, F, E>;
 
     fn poll_ready(&self, ctx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
-        self.service.poll_ready(ctx).map_err(&self.f)
+        self.service.poll_ready(ctx).map_err(&self.mapper)
     }
 
     fn call(&self, req: Req) -> Self::Future {
-        MapErrFuture::new(self.service.call(req), self.f.clone())
+        MapErrFuture::new(self.service.call(req), self.mapper.clone())
     }
 }
 
@@ -105,23 +104,23 @@ where
 /// service's error.
 ///
 /// This is created by the `NewServiceExt::map_err` method.
-pub struct MapErrServiceFactory<A, Req, F, E>
+pub struct MapErrServiceFactory<SF, Req, F, E>
 where
-    A: ServiceFactory<Req>,
-    F: Fn(A::Error) -> E + Clone,
+    SF: ServiceFactory<Req>,
+    F: Fn(SF::Error) -> E + Clone,
 {
-    a: A,
+    a: SF,
     f: F,
     e: PhantomData<(E, Req)>,
 }
 
-impl<A, Req, F, E> MapErrServiceFactory<A, Req, F, E>
+impl<SF, Req, F, E> MapErrServiceFactory<SF, Req, F, E>
 where
-    A: ServiceFactory<Req>,
-    F: Fn(A::Error) -> E + Clone,
+    SF: ServiceFactory<Req>,
+    F: Fn(SF::Error) -> E + Clone,
 {
     /// Create new `MapErr` new service instance
-    pub(crate) fn new(a: A, f: F) -> Self {
+    pub(crate) fn new(a: SF, f: F) -> Self {
         Self {
             a,
             f,
@@ -130,10 +129,10 @@ where
     }
 }
 
-impl<A, Req, F, E> Clone for MapErrServiceFactory<A, Req, F, E>
+impl<SF, Req, F, E> Clone for MapErrServiceFactory<SF, Req, F, E>
 where
-    A: ServiceFactory<Req> + Clone,
-    F: Fn(A::Error) -> E + Clone,
+    SF: ServiceFactory<Req> + Clone,
+    F: Fn(SF::Error) -> E + Clone,
 {
     fn clone(&self) -> Self {
         Self {
@@ -144,57 +143,57 @@ where
     }
 }
 
-impl<A, Req, F, E> ServiceFactory<Req> for MapErrServiceFactory<A, Req, F, E>
+impl<SF, Req, F, E> ServiceFactory<Req> for MapErrServiceFactory<SF, Req, F, E>
 where
-    A: ServiceFactory<Req>,
-    F: Fn(A::Error) -> E + Clone,
+    SF: ServiceFactory<Req>,
+    F: Fn(SF::Error) -> E + Clone,
 {
-    type Response = A::Response;
+    type Response = SF::Response;
     type Error = E;
 
-    type Config = A::Config;
-    type Service = MapErr<A::Service, Req, F, E>;
-    type InitError = A::InitError;
-    type Future = MapErrServiceFuture<A, Req, F, E>;
+    type Config = SF::Config;
+    type Service = MapErr<SF::Service, Req, F, E>;
+    type InitError = SF::InitError;
+    type Future = MapErrServiceFuture<SF, Req, F, E>;
 
-    fn new_service(&self, cfg: A::Config) -> Self::Future {
+    fn new_service(&self, cfg: SF::Config) -> Self::Future {
         MapErrServiceFuture::new(self.a.new_service(cfg), self.f.clone())
     }
 }
 
 pin_project! {
-    pub struct MapErrServiceFuture<A, Req, F, E>
+    pub struct MapErrServiceFuture<SF, Req, F, E>
     where
-        A: ServiceFactory<Req>,
-        F: Fn(A::Error) -> E,
+        SF: ServiceFactory<Req>,
+        F: Fn(SF::Error) -> E,
     {
         #[pin]
-        fut: A::Future,
-        f: F,
+        fut: SF::Future,
+        mapper: F,
     }
 }
 
-impl<A, Req, F, E> MapErrServiceFuture<A, Req, F, E>
+impl<SF, Req, F, E> MapErrServiceFuture<SF, Req, F, E>
 where
-    A: ServiceFactory<Req>,
-    F: Fn(A::Error) -> E,
+    SF: ServiceFactory<Req>,
+    F: Fn(SF::Error) -> E,
 {
-    fn new(fut: A::Future, f: F) -> Self {
-        MapErrServiceFuture { fut, f }
+    fn new(fut: SF::Future, mapper: F) -> Self {
+        MapErrServiceFuture { fut, mapper }
     }
 }
 
-impl<A, Req, F, E> Future for MapErrServiceFuture<A, Req, F, E>
+impl<SF, Req, F, E> Future for MapErrServiceFuture<SF, Req, F, E>
 where
-    A: ServiceFactory<Req>,
-    F: Fn(A::Error) -> E + Clone,
+    SF: ServiceFactory<Req>,
+    F: Fn(SF::Error) -> E + Clone,
 {
-    type Output = Result<MapErr<A::Service, Req, F, E>, A::InitError>;
+    type Output = Result<MapErr<SF::Service, Req, F, E>, SF::InitError>;
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let this = self.project();
         if let Poll::Ready(svc) = this.fut.poll(cx)? {
-            Poll::Ready(Ok(MapErr::new(svc, this.f.clone())))
+            Poll::Ready(Ok(MapErr::new(svc, this.mapper.clone())))
         } else {
             Poll::Pending
         }

actix-service/src/pipeline.rs

@@ -1,3 +1,6 @@
+// TODO: see if pipeline is necessary
+#![allow(dead_code)]
+
 use core::{
     marker::PhantomData,
     task::{Context, Poll},
@@ -11,7 +14,7 @@ use crate::then::{ThenService, ThenServiceFactory};
 use crate::{IntoService, IntoServiceFactory, Service, ServiceFactory};
 
 /// Construct new pipeline with one service in pipeline chain.
-pub fn pipeline<I, S, Req>(service: I) -> Pipeline<S, Req>
+pub(crate) fn pipeline<I, S, Req>(service: I) -> Pipeline<S, Req>
 where
     I: IntoService<S, Req>,
     S: Service<Req>,
@@ -23,7 +26,7 @@ where
 }
 
 /// Construct new pipeline factory with one service factory.
-pub fn pipeline_factory<I, SF, Req>(factory: I) -> PipelineFactory<SF, Req>
+pub(crate) fn pipeline_factory<I, SF, Req>(factory: I) -> PipelineFactory<SF, Req>
 where
     I: IntoServiceFactory<SF, Req>,
     SF: ServiceFactory<Req>,
@@ -35,7 +38,7 @@ where
 }
 
 /// Pipeline service - pipeline allows to compose multiple service into one service.
-pub struct Pipeline<S, Req> {
+pub(crate) struct Pipeline<S, Req> {
     service: S,
     _phantom: PhantomData<Req>,
 }
@@ -157,7 +160,7 @@ impl<S: Service<Req>, Req> Service<Req> for Pipeline<S, Req> {
 }
 
 /// Pipeline factory
-pub struct PipelineFactory<SF, Req> {
+pub(crate) struct PipelineFactory<SF, Req> {
     factory: SF,
     _phantom: PhantomData<Req>,
 }

actix-service/src/then.rs

@@ -246,7 +246,11 @@ mod tests {
 
     use futures_util::future::lazy;
 
-    use crate::{err, ok, pipeline, pipeline_factory, ready, Ready, Service, ServiceFactory};
+    use crate::{
+        err, ok,
+        pipeline::{pipeline, pipeline_factory},
+        ready, Ready, Service, ServiceFactory,
+    };
 
     #[derive(Clone)]
     struct Srv1(Rc<Cell<usize>>);

actix-service/src/transform.rs

@@ -21,13 +21,12 @@ where
     ApplyTransform::new(t, factory.into_factory())
 }
 
-/// The `Transform` trait defines the interface of a service factory that wraps inner service
-/// during construction.
+/// Defines the interface of a service factory that wraps inner service during construction.
 ///
-/// Transform(middleware) wraps inner service and runs during inbound and/or outbound processing in
-/// the request/response lifecycle. It may modify request and/or response.
+/// Transformers wrap an inner service and runs during inbound and/or outbound processing in the
+/// service lifecycle. It may modify request and/or response.
 ///
-/// For example, timeout transform:
+/// For example, a timeout service wrapper:
 ///
 /// ```ignore
 /// pub struct Timeout<S> {
@@ -35,18 +34,14 @@ where
 ///     timeout: Duration,
 /// }
 ///
-/// impl<S> Service for Timeout<S>
-/// where
-///     S: Service,
-/// {
-///     type Request = S::Request;
+/// impl<S: Service<Req>, Req> Service<Req> for Timeout<S> {
 ///     type Response = S::Response;
 ///     type Error = TimeoutError<S::Error>;
 ///     type Future = TimeoutServiceResponse<S>;
 ///
 ///     actix_service::forward_ready!(service);
 ///
-///     fn call(&self, req: S::Request) -> Self::Future {
+///     fn call(&self, req: Req) -> Self::Future {
 ///         TimeoutServiceResponse {
 ///             fut: self.service.call(req),
 ///             sleep: Sleep::new(clock::now() + self.timeout),
@@ -55,26 +50,22 @@ where
 /// }
 /// ```
 ///
-/// Timeout service in above example is decoupled from underlying service implementation and could
-/// be applied to any service.
+/// This wrapper service is decoupled from the underlying service implementation and could be
+/// applied to any service.
 ///
-/// The `Transform` trait defines the interface of a Service factory. `Transform` is often
+/// The `Transform` trait defines the interface of a service wrapper. `Transform` is often
 /// implemented for middleware, defining how to construct a middleware Service. A Service that is
 /// constructed by the factory takes the Service that follows it during execution as a parameter,
 /// assuming ownership of the next Service.
 ///
-/// Factory for `Timeout` middleware from the above example could look like this:
+/// A transform for the `Timeout` middleware could look like this:
 ///
 /// ```ignore
 /// pub struct TimeoutTransform {
 ///     timeout: Duration,
 /// }
 ///
-/// impl<S> Transform<S> for TimeoutTransform
-/// where
-///     S: Service,
-/// {
-///     type Request = S::Request;
+/// impl<S: Service<Req>, Req> Transform<S, Req> for TimeoutTransform {
 ///     type Response = S::Response;
 ///     type Error = TimeoutError<S::Error>;
 ///     type InitError = S::Error;
@@ -82,7 +73,7 @@ where
 ///     type Future = Ready<Result<Self::Transform, Self::InitError>>;
 ///
 ///     fn new_transform(&self, service: S) -> Self::Future {
-///         ready(Ok(TimeoutService {
+///         ready(Ok(Timeout {
 ///             service,
 ///             timeout: self.timeout,
 ///         }))
@@ -227,3 +218,53 @@ where
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use core::time::Duration;
+
+    use actix_utils::future::{ready, Ready};
+
+    use super::*;
+    use crate::Service;
+
+    // pseudo-doctest for Transform trait
+    pub struct TimeoutTransform {
+        timeout: Duration,
+    }
+
+    // pseudo-doctest for Transform trait
+    impl<S: Service<Req>, Req> Transform<S, Req> for TimeoutTransform {
+        type Response = S::Response;
+        type Error = S::Error;
+        type InitError = S::Error;
+        type Transform = Timeout<S>;
+        type Future = Ready<Result<Self::Transform, Self::InitError>>;
+
+        fn new_transform(&self, service: S) -> Self::Future {
+            ready(Ok(Timeout {
+                service,
+                _timeout: self.timeout,
+            }))
+        }
+    }
+
+    // pseudo-doctest for Transform trait
+    pub struct Timeout<S> {
+        service: S,
+        _timeout: Duration,
+    }
+
+    // pseudo-doctest for Transform trait
+    impl<S: Service<Req>, Req> Service<Req> for Timeout<S> {
+        type Response = S::Response;
+        type Error = S::Error;
+        type Future = S::Future;
+
+        crate::forward_ready!(service);
+
+        fn call(&self, req: Req) -> Self::Future {
+            self.service.call(req)
+        }
+    }
+}

actix-tls/CHANGES.md

@@ -3,15 +3,110 @@
 ## Unreleased - 2021-xx-xx
 
 
+## 3.0.0-rc.1 - 2021-11-29
+### Added
+* Derive `Debug` for `connect::Connection`. [#422]
+* Implement `Display` for `accept::TlsError`. [#422]
+* Implement `Error` for `accept::TlsError` where both types also implement `Error`. [#422]
+* Implement `Default` for `connect::Resolver`. [#422]
+* Implement `Error` for `connect::ConnectError`. [#422]
+* Implement `Default` for `connect::tcp::{TcpConnector, TcpConnectorService}`. [#423]
+* Implement `Default` for `connect::ConnectorService`. [#423]
+
+### Changed
+* The crate's default features flags no longer include `uri`. [#422]
+* Useful re-exports from underlying TLS crates are exposed in a `reexports` modules in all acceptors and connectors.
+* Convert `connect::ResolverService` from enum to struct. [#422]
+* Make `ConnectAddrsIter` private. [#422]
+* Mark `tcp::{TcpConnector, TcpConnectorService}` structs `#[non_exhaustive]`. [#423]
+* Rename `accept::native_tls::{NativeTlsAcceptorService => AcceptorService}`. [#422]
+* Rename `connect::{Address => Host}` trait. [#422]
+* Rename method `connect::Connection::{host => hostname}`. [#422]
+* Rename struct `connect::{Connect => ConnectInfo}`. [#422]
+* Rename struct `connect::{ConnectService => ConnectorService}`. [#422]
+* Rename struct `connect::{ConnectServiceFactory => Connector}`. [#422]
+* Rename TLS acceptor service future types and hide from docs. [#422]
+* Unbox some service futures types. [#422]
+* Inline modules in `connect::tls` to `connect` module. [#422]
+
+### Removed
+* Remove `connect::{new_connector, new_connector_factory, default_connector, default_connector_factory}` methods. [#422]
+* Remove `connect::native_tls::Connector::service` method. [#422]
+* Remove redundant `connect::Connection::from_parts` method. [#422]
+
+[#422]: https://github.com/actix/actix-net/pull/422
+[#423]: https://github.com/actix/actix-net/pull/423
+
+
+### Added
+* Derive `Debug` for `connect::Connection`. [#422]
+* Implement `Display` for `accept::TlsError`. [#422]
+* Implement `Error` for `accept::TlsError` where both types also implement `Error`. [#422]
+* Implement `Default` for `connect::Resolver`. [#422]
+* Implement `Error` for `connect::ConnectError`. [#422]
+
+### Changed
+* The crate's default features flags no longer include `uri`. [#422]
+* Useful re-exports from underlying TLS crates are exposed in a `reexports` modules in all acceptors and connectors.
+* Convert `connect::ResolverService` from enum to struct. [#422]
+* Make `ConnectAddrsIter` private. [#422]
+* Rename `accept::native_tls::{NativeTlsAcceptorService => AcceptorService}`. [#422]
+* Rename `connect::{Address => Host}` trait. [#422]
+* Rename method `connect::Connection::{host => hostname}`. [#422]
+* Rename struct `connect::{Connect => ConnectInfo}`. [#422]
+* Rename struct `connect::{ConnectService => ConnectorService}`. [#422]
+* Rename struct `connect::{ConnectServiceFactory => Connector}`. [#422]
+* Rename TLS acceptor service future types and hide from docs. [#422]
+* Unbox some service futures types. [#422]
+* Inline modules in `connect::tls` to `connect` module. [#422]
+
+### Removed
+* Remove `connect::{new_connector, new_connector_factory, default_connector, default_connector_factory}` methods. [#422]
+* Remove `connect::native_tls::Connector::service` method. [#422]
+* Remove redundant `connect::Connection::from_parts` method. [#422]
+
+[#422]: https://github.com/actix/actix-net/pull/422
+
+
+## 3.0.0-beta.9 - 2021-11-22
+* Add configurable timeout for accepting TLS connection. [#393]
+* Added `TlsError::Timeout` variant. [#393]
+* All TLS acceptor services now use `TlsError` for their error types. [#393]
+* Added `TlsError::into_service_error`. [#420]
+
+[#393]: https://github.com/actix/actix-net/pull/393
+[#420]: https://github.com/actix/actix-net/pull/420
+
+
+## 3.0.0-beta.8 - 2021-11-15
+* Add `Connect::request` for getting a reference to the connection request. [#415]
+
+[#415]: https://github.com/actix/actix-net/pull/415
+
+
+## 3.0.0-beta.7 - 2021-10-20
+* Add `webpki_roots_cert_store()` to get rustls compatible webpki roots cert store. [#401]
+* Alias `connect::ssl` to `connect::tls`. [#401]
+
+[#401]: https://github.com/actix/actix-net/pull/401
+
+
+## 3.0.0-beta.6 - 2021-10-19
+* Update `tokio-rustls` to `0.23` which uses `rustls` `0.20`. [#396]
+* Removed a re-export of `Session` from `rustls` as it no longer exist. [#396]
+* Minimum supported Rust version (MSRV) is now 1.52.
+
+[#396]: https://github.com/actix/actix-net/pull/396
+
+
 ## 3.0.0-beta.5 - 2021-03-29
-* Changed `connect::ssl::rustls::RustlsConnectorService` to return error when `DNSNameRef` 
+* Changed `connect::ssl::rustls::RustlsConnectorService` to return error when `DNSNameRef`
   generation failed instead of panic. [#296]
 * Remove `connect::ssl::openssl::OpensslConnectServiceFactory`. [#297]
 * Remove `connect::ssl::openssl::OpensslConnectService`. [#297]
 * Add `connect::ssl::native_tls` module for native tls support. [#295]
 * Rename `accept::{nativetls => native_tls}`. [#295]
-* Remove `connect::TcpConnectService` type. service caller expect a `TcpStream` should use 
-  `connect::ConnectService` instead and call `Connection<T, TcpStream>::into_parts`. [#299]
+* Remove `connect::TcpConnectService` type. Service caller expecting a `TcpStream` should use `connect::ConnectService` instead and call `Connection<T, TcpStream>::into_parts`. [#299]
 
 [#295]: https://github.com/actix/actix-net/pull/295
 [#296]: https://github.com/actix/actix-net/pull/296

actix-tls/Cargo.toml

@@ -1,25 +1,27 @@
 [package]
 name = "actix-tls"
-version = "3.0.0-beta.5"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+version = "3.0.0-rc.1"
+authors = [
+    "Nikolay Kim <fafhrd91@gmail.com>",
+    "Rob Ede <robjtede@icloud.com>",
+]
 description = "TLS acceptor and connector services for Actix ecosystem"
 keywords = ["network", "tls", "ssl", "async", "transport"]
-homepage = "https://actix.rs"
 repository = "https://github.com/actix/actix-net.git"
-documentation = "https://docs.rs/actix-tls"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
 edition = "2018"
 
 [package.metadata.docs.rs]
-features = ["openssl", "rustls", "native-tls", "accept", "connect", "uri"]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
 
 [lib]
 name = "actix_tls"
 path = "src/lib.rs"
 
 [features]
-default = ["accept", "connect", "uri"]
+default = ["accept", "connect"]
 
 # enable acceptor services
 accept = []
@@ -40,37 +42,43 @@ native-tls = ["tokio-native-tls"]
 uri = ["http"]
 
 [dependencies]
-actix-codec = "0.4.0-beta.1"
+actix-codec = "0.4.0"
 actix-rt = { version = "2.2.0", default-features = false }
-actix-service = "2.0.0-beta.5"
-actix-utils = "3.0.0-beta.4"
+actix-service = "2.0.0"
+actix-utils = "3.0.0"
 
 derive_more = "0.99.5"
 futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
-http = { version = "0.2.3", optional = true }
 log = "0.4"
+pin-project-lite = "0.2.7"
 tokio-util = { version = "0.6.3", default-features = false }
 
+# uri
+http = { version = "0.2.3", optional = true }
+
 # openssl
 tls-openssl = { package = "openssl", version = "0.10.9", optional = true }
 tokio-openssl = { version = "0.6", optional = true }
 
 # rustls
-tokio-rustls = { version = "0.22", optional = true }
-webpki-roots = { version = "0.21", optional = true }
+tokio-rustls = { version = "0.23", optional = true }
+webpki-roots = { version = "0.22", optional = true }
 
 # native-tls
 tokio-native-tls = { version = "0.3", optional = true }
 
 [dev-dependencies]
 actix-rt = "2.2.0"
-actix-server = "2.0.0-beta.3"
+actix-server = "2.0.0-beta.9"
 bytes = "1"
-env_logger = "0.8"
+env_logger = "0.9"
 futures-util = { version = "0.3.7", default-features = false, features = ["sink"] }
 log = "0.4"
+rcgen = "0.8"
+rustls-pemfile = "0.2.1"
+tokio-rustls = { version = "0.23", features = ["dangerous_configuration"] }
 trust-dns-resolver = "0.20.0"
 
 [[example]]
-name = "tcp-rustls"
+name = "accept-rustls"
 required-features = ["accept", "rustls"]

actix-tls/examples/accept-rustls.rs

@@ -1,4 +1,4 @@
-//! TLS Acceptor Server
+//! No-Op TLS Acceptor Server
 //!
 //! Using either HTTPie (`http`) or cURL:
 //!
@@ -31,34 +31,33 @@ use std::{
 
 use actix_rt::net::TcpStream;
 use actix_server::Server;
-use actix_service::pipeline_factory;
+use actix_service::ServiceFactoryExt as _;
 use actix_tls::accept::rustls::{Acceptor as RustlsAcceptor, TlsStream};
 use futures_util::future::ok;
 use log::info;
-use rustls::{
-    internal::pemfile::certs, internal::pemfile::rsa_private_keys, NoClientAuth, ServerConfig,
-};
-
-#[derive(Debug)]
-struct ServiceState {
-    num: Arc<AtomicUsize>,
-}
+use rustls::{server::ServerConfig, Certificate, PrivateKey};
+use rustls_pemfile::{certs, rsa_private_keys};
 
 #[actix_rt::main]
 async fn main() -> io::Result<()> {
-    env::set_var("RUST_LOG", "actix=trace,basic=trace");
+    env::set_var("RUST_LOG", "info");
     env_logger::init();
 
-    let mut tls_config = ServerConfig::new(NoClientAuth::new());
-
     // Load TLS key and cert files
     let cert_file = &mut BufReader::new(File::open("./examples/cert.pem").unwrap());
     let key_file = &mut BufReader::new(File::open("./examples/key.pem").unwrap());
 
-    let cert_chain = certs(cert_file).unwrap();
+    let cert_chain = certs(cert_file)
+        .unwrap()
+        .into_iter()
+        .map(Certificate)
+        .collect();
     let mut keys = rsa_private_keys(key_file).unwrap();
-    tls_config
-        .set_single_cert(cert_chain, keys.remove(0))
+
+    let tls_config = ServerConfig::builder()
+        .with_safe_defaults()
+        .with_no_client_auth()
+        .with_single_cert(cert_chain, PrivateKey(keys.remove(0)))
         .unwrap();
 
     let tls_acceptor = RustlsAcceptor::new(tls_config);
@@ -73,7 +72,8 @@ async fn main() -> io::Result<()> {
             let count = Arc::clone(&count);
 
             // Set up TLS service factory
-            pipeline_factory(tls_acceptor.clone())
+            tls_acceptor
+                .clone()
                 .map_err(|err| println!("Rustls error: {:?}", err))
                 .and_then(move |stream: TlsStream<TcpStream>| {
                     let num = count.fetch_add(1, Ordering::Relaxed);

actix-tls/src/accept/mod.rs

@@ -1,25 +1,31 @@
-//! TLS acceptor services for Actix ecosystem.
-//!
-//! ## Crate Features
-//! * `openssl` - TLS acceptor using the `openssl` crate.
-//! * `rustls` - TLS acceptor using the `rustls` crate.
-//! * `native-tls` - TLS acceptor using the `native-tls` crate.
+//! TLS connection acceptor services.
 
-use std::sync::atomic::{AtomicUsize, Ordering};
+use std::{
+    convert::Infallible,
+    sync::atomic::{AtomicUsize, Ordering},
+};
 
 use actix_utils::counter::Counter;
+use derive_more::{Display, Error};
 
 #[cfg(feature = "openssl")]
+#[cfg_attr(docsrs, doc(cfg(feature = "openssl")))]
 pub mod openssl;
 
 #[cfg(feature = "rustls")]
+#[cfg_attr(docsrs, doc(cfg(feature = "rustls")))]
 pub mod rustls;
 
 #[cfg(feature = "native-tls")]
+#[cfg_attr(docsrs, doc(cfg(feature = "native-tls")))]
 pub mod native_tls;
 
 pub(crate) static MAX_CONN: AtomicUsize = AtomicUsize::new(256);
 
+#[cfg(any(feature = "openssl", feature = "rustls", feature = "native-tls"))]
+pub(crate) const DEFAULT_TLS_HANDSHAKE_TIMEOUT: std::time::Duration =
+    std::time::Duration::from_secs(3);
+
 thread_local! {
     static MAX_CONN_COUNTER: Counter = Counter::new(MAX_CONN.load(Ordering::Relaxed));
 }
@@ -34,9 +40,52 @@ pub fn max_concurrent_tls_connect(num: usize) {
     MAX_CONN.store(num, Ordering::Relaxed);
 }
 
-/// TLS error combined with service error.
-#[derive(Debug)]
-pub enum TlsError<E1, E2> {
-    Tls(E1),
-    Service(E2),
+/// TLS handshake error, TLS timeout, or inner service error.
+///
+/// All TLS acceptors from this crate will return the `SvcErr` type parameter as [`Infallible`],
+/// which can be cast to your own service type, inferred or otherwise,
+/// using [`into_service_error`](Self::into_service_error).
+#[derive(Debug, Display, Error)]
+pub enum TlsError<TlsErr, SvcErr> {
+    /// TLS handshake has timed-out.
+    #[display(fmt = "TLS handshake has timed-out")]
+    Timeout,
+
+    /// Wraps TLS service errors.
+    #[display(fmt = "TLS handshake error")]
+    Tls(TlsErr),
+
+    /// Wraps service errors.
+    #[display(fmt = "Service error")]
+    Service(SvcErr),
+}
+
+impl<TlsErr> TlsError<TlsErr, Infallible> {
+    /// Casts the infallible service error type returned from acceptors into caller's type.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::convert::Infallible;
+    /// # use actix_tls::accept::TlsError;
+    /// let a: TlsError<u32, Infallible> = TlsError::Tls(42);
+    /// let _b: TlsError<u32, u64> = a.into_service_error();
+    /// ```
+    pub fn into_service_error<SvcErr>(self) -> TlsError<TlsErr, SvcErr> {
+        match self {
+            Self::Timeout => TlsError::Timeout,
+            Self::Tls(err) => TlsError::Tls(err),
+            Self::Service(err) => match err {},
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn tls_service_error_inference() {
+        let a: TlsError<u32, Infallible> = TlsError::Tls(42);
+        let _b: TlsError<u32, u64> = a.into_service_error();
+    }
 }

actix-tls/src/accept/native_tls.rs

@@ -1,45 +1,42 @@
+//! `native-tls` based TLS connection acceptor service.
+//!
+//! See [`Acceptor`] for main service factory docs.
+
 use std::{
+    convert::Infallible,
     io::{self, IoSlice},
-    ops::{Deref, DerefMut},
     pin::Pin,
     task::{Context, Poll},
+    time::Duration,
 };
 
 use actix_codec::{AsyncRead, AsyncWrite, ReadBuf};
-use actix_rt::net::{ActixStream, Ready};
+use actix_rt::{
+    net::{ActixStream, Ready},
+    time::timeout,
+};
 use actix_service::{Service, ServiceFactory};
-use actix_utils::counter::Counter;
+use actix_utils::{
+    counter::Counter,
+    future::{ready, Ready as FutReady},
+};
+use derive_more::{Deref, DerefMut, From};
 use futures_core::future::LocalBoxFuture;
+use tokio_native_tls::{native_tls::Error, TlsAcceptor};
 
-pub use tokio_native_tls::native_tls::Error;
-pub use tokio_native_tls::TlsAcceptor;
+use super::{TlsError, DEFAULT_TLS_HANDSHAKE_TIMEOUT, MAX_CONN_COUNTER};
 
-use super::MAX_CONN_COUNTER;
+pub mod reexports {
+    //! Re-exports from `native-tls` that are useful for acceptors.
 
-/// Wrapper type for `tokio_native_tls::TlsStream` in order to impl `ActixStream` trait.
-pub struct TlsStream<T>(tokio_native_tls::TlsStream<T>);
-
-impl<T> From<tokio_native_tls::TlsStream<T>> for TlsStream<T> {
-    fn from(stream: tokio_native_tls::TlsStream<T>) -> Self {
-        Self(stream)
-    }
+    pub use tokio_native_tls::{native_tls::Error, TlsAcceptor};
 }
 
-impl<T: ActixStream> Deref for TlsStream<T> {
-    type Target = tokio_native_tls::TlsStream<T>;
+/// Wraps a `native-tls` based async TLS stream in order to implement [`ActixStream`].
+#[derive(Deref, DerefMut, From)]
+pub struct TlsStream<IO>(tokio_native_tls::TlsStream<IO>);
 
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl<T: ActixStream> DerefMut for TlsStream<T> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
-impl<T: ActixStream> AsyncRead for TlsStream<T> {
+impl<IO: ActixStream> AsyncRead for TlsStream<IO> {
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -49,7 +46,7 @@ impl<T: ActixStream> AsyncRead for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> AsyncWrite for TlsStream<T> {
+impl<IO: ActixStream> AsyncWrite for TlsStream<IO> {
     fn poll_write(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -79,28 +76,37 @@ impl<T: ActixStream> AsyncWrite for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> ActixStream for TlsStream<T> {
+impl<IO: ActixStream> ActixStream for TlsStream<IO> {
     fn poll_read_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_read_ready((&**self).get_ref().get_ref().get_ref(), cx)
+        IO::poll_read_ready((&**self).get_ref().get_ref().get_ref(), cx)
     }
 
     fn poll_write_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_write_ready((&**self).get_ref().get_ref().get_ref(), cx)
+        IO::poll_write_ready((&**self).get_ref().get_ref().get_ref(), cx)
     }
 }
 
-/// Accept TLS connections via `native-tls` package.
-///
-/// `native-tls` feature enables this `Acceptor` type.
+/// Accept TLS connections via the `native-tls` crate.
 pub struct Acceptor {
     acceptor: TlsAcceptor,
+    handshake_timeout: Duration,
 }
 
 impl Acceptor {
-    /// Create `native-tls` based `Acceptor` service factory.
-    #[inline]
+    /// Constructs `native-tls` based acceptor service factory.
     pub fn new(acceptor: TlsAcceptor) -> Self {
-        Acceptor { acceptor }
+        Acceptor {
+            acceptor,
+            handshake_timeout: DEFAULT_TLS_HANDSHAKE_TIMEOUT,
+        }
+    }
+
+    /// Limit the amount of time that the acceptor will wait for a TLS handshake to complete.
+    ///
+    /// Default timeout is 3 seconds.
+    pub fn set_handshake_timeout(&mut self, handshake_timeout: Duration) -> &mut Self {
+        self.handshake_timeout = handshake_timeout;
+        self
     }
 }
 
@@ -109,39 +115,43 @@ impl Clone for Acceptor {
     fn clone(&self) -> Self {
         Self {
             acceptor: self.acceptor.clone(),
+            handshake_timeout: self.handshake_timeout,
         }
     }
 }
 
-impl<T: ActixStream + 'static> ServiceFactory<T> for Acceptor {
-    type Response = TlsStream<T>;
-    type Error = Error;
+impl<IO: ActixStream + 'static> ServiceFactory<IO> for Acceptor {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<Error, Infallible>;
     type Config = ();
-
-    type Service = NativeTlsAcceptorService;
+    type Service = AcceptorService;
     type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+    type Future = FutReady<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         let res = MAX_CONN_COUNTER.with(|conns| {
-            Ok(NativeTlsAcceptorService {
+            Ok(AcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
+                handshake_timeout: self.handshake_timeout,
             })
         });
-        Box::pin(async { res })
+
+        ready(res)
     }
 }
 
-pub struct NativeTlsAcceptorService {
+/// Native-TLS based acceptor service.
+pub struct AcceptorService {
     acceptor: TlsAcceptor,
     conns: Counter,
+    handshake_timeout: Duration,
 }
 
-impl<T: ActixStream + 'static> Service<T> for NativeTlsAcceptorService {
-    type Response = TlsStream<T>;
-    type Error = Error;
-    type Future = LocalBoxFuture<'static, Result<TlsStream<T>, Error>>;
+impl<IO: ActixStream + 'static> Service<IO> for AcceptorService {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<Error, Infallible>;
+    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
 
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         if self.conns.available(cx) {
@@ -151,13 +161,21 @@ impl<T: ActixStream + 'static> Service<T> for NativeTlsAcceptorService {
         }
     }
 
-    fn call(&self, io: T) -> Self::Future {
+    fn call(&self, io: IO) -> Self::Future {
         let guard = self.conns.get();
         let acceptor = self.acceptor.clone();
+
+        let dur = self.handshake_timeout;
+
         Box::pin(async move {
-            let io = acceptor.accept(io).await;
-            drop(guard);
-            io.map(Into::into)
+            match timeout(dur, acceptor.accept(io)).await {
+                Ok(Ok(io)) => {
+                    drop(guard);
+                    Ok(TlsStream(io))
+                }
+                Ok(Err(err)) => Err(TlsError::Tls(err)),
+                Err(_timeout) => Err(TlsError::Timeout),
+            }
         })
     }
 }

actix-tls/src/accept/openssl.rs

@@ -1,47 +1,45 @@
+//! `openssl` based TLS acceptor service.
+//!
+//! See [`Acceptor`] for main service factory docs.
+
 use std::{
+    convert::Infallible,
     future::Future,
     io::{self, IoSlice},
-    ops::{Deref, DerefMut},
     pin::Pin,
     task::{Context, Poll},
+    time::Duration,
 };
 
 use actix_codec::{AsyncRead, AsyncWrite, ReadBuf};
-use actix_rt::net::{ActixStream, Ready};
-use actix_service::{Service, ServiceFactory};
-use actix_utils::counter::{Counter, CounterGuard};
-use futures_core::{future::LocalBoxFuture, ready};
-
-pub use openssl::ssl::{
-    AlpnError, Error as SslError, HandshakeError, Ssl, SslAcceptor, SslAcceptorBuilder,
+use actix_rt::{
+    net::{ActixStream, Ready},
+    time::{sleep, Sleep},
 };
+use actix_service::{Service, ServiceFactory};
+use actix_utils::{
+    counter::{Counter, CounterGuard},
+    future::{ready, Ready as FutReady},
+};
+use derive_more::{Deref, DerefMut, From};
+use openssl::ssl::{Error, Ssl, SslAcceptor};
+use pin_project_lite::pin_project;
 
-use super::MAX_CONN_COUNTER;
+use super::{TlsError, DEFAULT_TLS_HANDSHAKE_TIMEOUT, MAX_CONN_COUNTER};
 
-/// Wrapper type for `tokio_openssl::SslStream` in order to impl `ActixStream` trait.
-pub struct TlsStream<T>(tokio_openssl::SslStream<T>);
+pub mod reexports {
+    //! Re-exports from `openssl` that are useful for acceptors.
 
-impl<T> From<tokio_openssl::SslStream<T>> for TlsStream<T> {
-    fn from(stream: tokio_openssl::SslStream<T>) -> Self {
-        Self(stream)
-    }
+    pub use openssl::ssl::{
+        AlpnError, Error, HandshakeError, Ssl, SslAcceptor, SslAcceptorBuilder,
+    };
 }
 
-impl<T> Deref for TlsStream<T> {
-    type Target = tokio_openssl::SslStream<T>;
+/// Wraps an `openssl` based async TLS stream in order to implement [`ActixStream`].
+#[derive(Deref, DerefMut, From)]
+pub struct TlsStream<IO>(tokio_openssl::SslStream<IO>);
 
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl<T> DerefMut for TlsStream<T> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
-impl<T: ActixStream> AsyncRead for TlsStream<T> {
+impl<IO: ActixStream> AsyncRead for TlsStream<IO> {
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -51,7 +49,7 @@ impl<T: ActixStream> AsyncRead for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> AsyncWrite for TlsStream<T> {
+impl<IO: ActixStream> AsyncWrite for TlsStream<IO> {
     fn poll_write(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -81,28 +79,38 @@ impl<T: ActixStream> AsyncWrite for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> ActixStream for TlsStream<T> {
+impl<IO: ActixStream> ActixStream for TlsStream<IO> {
     fn poll_read_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_read_ready((&**self).get_ref(), cx)
+        IO::poll_read_ready((&**self).get_ref(), cx)
     }
 
     fn poll_write_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_write_ready((&**self).get_ref(), cx)
+        IO::poll_write_ready((&**self).get_ref(), cx)
     }
 }
 
-/// Accept TLS connections via `openssl` package.
-///
-/// `openssl` feature enables this `Acceptor` type.
+/// Accept TLS connections via the `openssl` crate.
 pub struct Acceptor {
     acceptor: SslAcceptor,
+    handshake_timeout: Duration,
 }
 
 impl Acceptor {
-    /// Create OpenSSL based `Acceptor` service factory.
+    /// Create `openssl` based acceptor service factory.
     #[inline]
     pub fn new(acceptor: SslAcceptor) -> Self {
-        Acceptor { acceptor }
+        Acceptor {
+            acceptor,
+            handshake_timeout: DEFAULT_TLS_HANDSHAKE_TIMEOUT,
+        }
+    }
+
+    /// Limit the amount of time that the acceptor will wait for a TLS handshake to complete.
+    ///
+    /// Default timeout is 3 seconds.
+    pub fn set_handshake_timeout(&mut self, handshake_timeout: Duration) -> &mut Self {
+        self.handshake_timeout = handshake_timeout;
+        self
     }
 }
 
@@ -111,38 +119,43 @@ impl Clone for Acceptor {
     fn clone(&self) -> Self {
         Self {
             acceptor: self.acceptor.clone(),
+            handshake_timeout: self.handshake_timeout,
         }
     }
 }
 
-impl<T: ActixStream> ServiceFactory<T> for Acceptor {
-    type Response = TlsStream<T>;
-    type Error = SslError;
+impl<IO: ActixStream> ServiceFactory<IO> for Acceptor {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<Error, Infallible>;
     type Config = ();
     type Service = AcceptorService;
     type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+    type Future = FutReady<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         let res = MAX_CONN_COUNTER.with(|conns| {
             Ok(AcceptorService {
                 acceptor: self.acceptor.clone(),
                 conns: conns.clone(),
+                handshake_timeout: self.handshake_timeout,
             })
         });
-        Box::pin(async { res })
+
+        ready(res)
     }
 }
 
+/// OpenSSL based acceptor service.
 pub struct AcceptorService {
     acceptor: SslAcceptor,
     conns: Counter,
+    handshake_timeout: Duration,
 }
 
-impl<T: ActixStream> Service<T> for AcceptorService {
-    type Response = TlsStream<T>;
-    type Error = SslError;
-    type Future = AcceptorServiceResponse<T>;
+impl<IO: ActixStream> Service<IO> for AcceptorService {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<Error, Infallible>;
+    type Future = AcceptFut<IO>;
 
     fn poll_ready(&self, ctx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         if self.conns.available(ctx) {
@@ -152,30 +165,43 @@ impl<T: ActixStream> Service<T> for AcceptorService {
         }
     }
 
-    fn call(&self, io: T) -> Self::Future {
+    fn call(&self, io: IO) -> Self::Future {
         let ssl_ctx = self.acceptor.context();
         let ssl = Ssl::new(ssl_ctx).expect("Provided SSL acceptor was invalid.");
-        AcceptorServiceResponse {
+
+        AcceptFut {
             _guard: self.conns.get(),
+            timeout: sleep(self.handshake_timeout),
             stream: Some(tokio_openssl::SslStream::new(ssl, io).unwrap()),
         }
     }
 }
 
-pub struct AcceptorServiceResponse<T: ActixStream> {
-    stream: Option<tokio_openssl::SslStream<T>>,
-    _guard: CounterGuard,
-}
-
-impl<T: ActixStream> Future for AcceptorServiceResponse<T> {
-    type Output = Result<TlsStream<T>, SslError>;
-
-    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        ready!(Pin::new(self.stream.as_mut().unwrap()).poll_accept(cx))?;
-        Poll::Ready(Ok(self
-            .stream
-            .take()
-            .expect("SSL connect has resolved.")
-            .into()))
+pin_project! {
+    /// Accept future for OpenSSL service.
+    #[doc(hidden)]
+    pub struct AcceptFut<IO: ActixStream> {
+        stream: Option<tokio_openssl::SslStream<IO>>,
+        #[pin]
+        timeout: Sleep,
+        _guard: CounterGuard,
+    }
+}
+
+impl<IO: ActixStream> Future for AcceptFut<IO> {
+    type Output = Result<TlsStream<IO>, TlsError<Error, Infallible>>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let this = self.project();
+
+        match Pin::new(this.stream.as_mut().unwrap()).poll_accept(cx) {
+            Poll::Ready(Ok(())) => Poll::Ready(Ok(this
+                .stream
+                .take()
+                .expect("Acceptor should not be polled after it has completed.")
+                .into())),
+            Poll::Ready(Err(err)) => Poll::Ready(Err(TlsError::Tls(err))),
+            Poll::Pending => this.timeout.poll(cx).map(|_| Err(TlsError::Timeout)),
+        }
     }
 }

actix-tls/src/accept/rustls.rs

@@ -1,47 +1,45 @@
+//! `rustls` based TLS connection acceptor service.
+//!
+//! See [`Acceptor`] for main service factory docs.
+
 use std::{
+    convert::Infallible,
     future::Future,
     io::{self, IoSlice},
-    ops::{Deref, DerefMut},
     pin::Pin,
     sync::Arc,
     task::{Context, Poll},
+    time::Duration,
 };
 
 use actix_codec::{AsyncRead, AsyncWrite, ReadBuf};
-use actix_rt::net::{ActixStream, Ready};
+use actix_rt::{
+    net::{ActixStream, Ready},
+    time::{sleep, Sleep},
+};
 use actix_service::{Service, ServiceFactory};
-use actix_utils::counter::{Counter, CounterGuard};
-use futures_core::future::LocalBoxFuture;
+use actix_utils::{
+    counter::{Counter, CounterGuard},
+    future::{ready, Ready as FutReady},
+};
+use derive_more::{Deref, DerefMut, From};
+use pin_project_lite::pin_project;
+use tokio_rustls::rustls::ServerConfig;
 use tokio_rustls::{Accept, TlsAcceptor};
 
-pub use tokio_rustls::rustls::{ServerConfig, Session};
+use super::{TlsError, DEFAULT_TLS_HANDSHAKE_TIMEOUT, MAX_CONN_COUNTER};
 
-use super::MAX_CONN_COUNTER;
+pub mod reexports {
+    //! Re-exports from `rustls` that are useful for acceptors.
 
-/// Wrapper type for `tokio_openssl::SslStream` in order to impl `ActixStream` trait.
-pub struct TlsStream<T>(tokio_rustls::server::TlsStream<T>);
-
-impl<T> From<tokio_rustls::server::TlsStream<T>> for TlsStream<T> {
-    fn from(stream: tokio_rustls::server::TlsStream<T>) -> Self {
-        Self(stream)
-    }
+    pub use tokio_rustls::rustls::ServerConfig;
 }
 
-impl<T> Deref for TlsStream<T> {
-    type Target = tokio_rustls::server::TlsStream<T>;
+/// Wraps a `rustls` based async TLS stream in order to implement [`ActixStream`].
+#[derive(Deref, DerefMut, From)]
+pub struct TlsStream<IO>(tokio_rustls::server::TlsStream<IO>);
 
-    fn deref(&self) -> &Self::Target {
-        &self.0
-    }
-}
-
-impl<T> DerefMut for TlsStream<T> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        &mut self.0
-    }
-}
-
-impl<T: ActixStream> AsyncRead for TlsStream<T> {
+impl<IO: ActixStream> AsyncRead for TlsStream<IO> {
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -51,7 +49,7 @@ impl<T: ActixStream> AsyncRead for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> AsyncWrite for TlsStream<T> {
+impl<IO: ActixStream> AsyncWrite for TlsStream<IO> {
     fn poll_write(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -81,72 +79,81 @@ impl<T: ActixStream> AsyncWrite for TlsStream<T> {
     }
 }
 
-impl<T: ActixStream> ActixStream for TlsStream<T> {
+impl<IO: ActixStream> ActixStream for TlsStream<IO> {
     fn poll_read_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_read_ready((&**self).get_ref().0, cx)
+        IO::poll_read_ready((&**self).get_ref().0, cx)
     }
 
     fn poll_write_ready(&self, cx: &mut Context<'_>) -> Poll<io::Result<Ready>> {
-        T::poll_write_ready((&**self).get_ref().0, cx)
+        IO::poll_write_ready((&**self).get_ref().0, cx)
     }
 }
 
-/// Accept TLS connections via `rustls` package.
-///
-/// `rustls` feature enables this `Acceptor` type.
+/// Accept TLS connections via the `rustls` crate.
 pub struct Acceptor {
     config: Arc<ServerConfig>,
+    handshake_timeout: Duration,
 }
 
 impl Acceptor {
-    /// Create Rustls based `Acceptor` service factory.
-    #[inline]
+    /// Constructs `rustls` based acceptor service factory.
     pub fn new(config: ServerConfig) -> Self {
         Acceptor {
             config: Arc::new(config),
+            handshake_timeout: DEFAULT_TLS_HANDSHAKE_TIMEOUT,
         }
     }
+
+    /// Limit the amount of time that the acceptor will wait for a TLS handshake to complete.
+    ///
+    /// Default timeout is 3 seconds.
+    pub fn set_handshake_timeout(&mut self, handshake_timeout: Duration) -> &mut Self {
+        self.handshake_timeout = handshake_timeout;
+        self
+    }
 }
 
 impl Clone for Acceptor {
-    #[inline]
     fn clone(&self) -> Self {
         Self {
             config: self.config.clone(),
+            handshake_timeout: self.handshake_timeout,
         }
     }
 }
 
-impl<T: ActixStream> ServiceFactory<T> for Acceptor {
-    type Response = TlsStream<T>;
-    type Error = io::Error;
+impl<IO: ActixStream> ServiceFactory<IO> for Acceptor {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<io::Error, Infallible>;
     type Config = ();
-
     type Service = AcceptorService;
     type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+    type Future = FutReady<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
         let res = MAX_CONN_COUNTER.with(|conns| {
             Ok(AcceptorService {
                 acceptor: self.config.clone().into(),
                 conns: conns.clone(),
+                handshake_timeout: self.handshake_timeout,
             })
         });
-        Box::pin(async { res })
+
+        ready(res)
     }
 }
 
-/// Rustls based `Acceptor` service
+/// Rustls based acceptor service.
 pub struct AcceptorService {
     acceptor: TlsAcceptor,
     conns: Counter,
+    handshake_timeout: Duration,
 }
 
-impl<T: ActixStream> Service<T> for AcceptorService {
-    type Response = TlsStream<T>;
-    type Error = io::Error;
-    type Future = AcceptorServiceFut<T>;
+impl<IO: ActixStream> Service<IO> for AcceptorService {
+    type Response = TlsStream<IO>;
+    type Error = TlsError<io::Error, Infallible>;
+    type Future = AcceptFut<IO>;
 
     fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         if self.conns.available(cx) {
@@ -156,24 +163,35 @@ impl<T: ActixStream> Service<T> for AcceptorService {
         }
     }
 
-    fn call(&self, req: T) -> Self::Future {
-        AcceptorServiceFut {
-            _guard: self.conns.get(),
+    fn call(&self, req: IO) -> Self::Future {
+        AcceptFut {
             fut: self.acceptor.accept(req),
+            timeout: sleep(self.handshake_timeout),
+            _guard: self.conns.get(),
         }
     }
 }
 
-pub struct AcceptorServiceFut<T: ActixStream> {
-    fut: Accept<T>,
-    _guard: CounterGuard,
-}
-
-impl<T: ActixStream> Future for AcceptorServiceFut<T> {
-    type Output = Result<TlsStream<T>, io::Error>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.get_mut();
-        Pin::new(&mut this.fut).poll(cx).map_ok(TlsStream)
+pin_project! {
+    /// Accept future for Rustls service.
+    #[doc(hidden)]
+    pub struct AcceptFut<IO: ActixStream> {
+        fut: Accept<IO>,
+        #[pin]
+        timeout: Sleep,
+        _guard: CounterGuard,
+    }
+}
+
+impl<IO: ActixStream> Future for AcceptFut<IO> {
+    type Output = Result<TlsStream<IO>, TlsError<io::Error, Infallible>>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let mut this = self.project();
+        match Pin::new(&mut this.fut).poll(cx) {
+            Poll::Ready(Ok(stream)) => Poll::Ready(Ok(TlsStream(stream))),
+            Poll::Ready(Err(err)) => Poll::Ready(Err(TlsError::Tls(err))),
+            Poll::Pending => this.timeout.poll(cx).map(|_| Err(TlsError::Timeout)),
+        }
     }
 }

actix-tls/src/connect/connect.rs

@@ -1,350 +0,0 @@
-use std::{
-    collections::{vec_deque, VecDeque},
-    fmt,
-    iter::{self, FromIterator as _},
-    mem,
-    net::{IpAddr, SocketAddr},
-};
-
-/// Parse a host into parts (hostname and port).
-pub trait Address: Unpin + 'static {
-    /// Get hostname part.
-    fn hostname(&self) -> &str;
-
-    /// Get optional port part.
-    fn port(&self) -> Option<u16> {
-        None
-    }
-}
-
-impl Address for String {
-    fn hostname(&self) -> &str {
-        &self
-    }
-}
-
-impl Address for &'static str {
-    fn hostname(&self) -> &str {
-        self
-    }
-}
-
-#[derive(Debug, Eq, PartialEq, Hash)]
-pub(crate) enum ConnectAddrs {
-    None,
-    One(SocketAddr),
-    Multi(VecDeque<SocketAddr>),
-}
-
-impl ConnectAddrs {
-    pub(crate) fn is_none(&self) -> bool {
-        matches!(self, Self::None)
-    }
-
-    pub(crate) fn is_some(&self) -> bool {
-        !self.is_none()
-    }
-}
-
-impl Default for ConnectAddrs {
-    fn default() -> Self {
-        Self::None
-    }
-}
-
-impl From<Option<SocketAddr>> for ConnectAddrs {
-    fn from(addr: Option<SocketAddr>) -> Self {
-        match addr {
-            Some(addr) => ConnectAddrs::One(addr),
-            None => ConnectAddrs::None,
-        }
-    }
-}
-
-/// Connection info.
-#[derive(Debug, PartialEq, Eq, Hash)]
-pub struct Connect<T> {
-    pub(crate) req: T,
-    pub(crate) port: u16,
-    pub(crate) addr: ConnectAddrs,
-    pub(crate) local_addr: Option<IpAddr>,
-}
-
-impl<T: Address> Connect<T> {
-    /// Create `Connect` instance by splitting the string by ':' and convert the second part to u16
-    pub fn new(req: T) -> Connect<T> {
-        let (_, port) = parse_host(req.hostname());
-
-        Connect {
-            req,
-            port: port.unwrap_or(0),
-            addr: ConnectAddrs::None,
-            local_addr: None,
-        }
-    }
-
-    /// Create new `Connect` instance from host and address. Connector skips name resolution stage
-    /// for such connect messages.
-    pub fn with_addr(req: T, addr: SocketAddr) -> Connect<T> {
-        Connect {
-            req,
-            port: 0,
-            addr: ConnectAddrs::One(addr),
-            local_addr: None,
-        }
-    }
-
-    /// Use port if address does not provide one.
-    ///
-    /// Default value is 0.
-    pub fn set_port(mut self, port: u16) -> Self {
-        self.port = port;
-        self
-    }
-
-    /// Set address.
-    pub fn set_addr(mut self, addr: Option<SocketAddr>) -> Self {
-        self.addr = ConnectAddrs::from(addr);
-        self
-    }
-
-    /// Set list of addresses.
-    pub fn set_addrs<I>(mut self, addrs: I) -> Self
-    where
-        I: IntoIterator<Item = SocketAddr>,
-    {
-        let mut addrs = VecDeque::from_iter(addrs);
-        self.addr = if addrs.len() < 2 {
-            ConnectAddrs::from(addrs.pop_front())
-        } else {
-            ConnectAddrs::Multi(addrs)
-        };
-        self
-    }
-
-    /// Set local_addr of connect.
-    pub fn set_local_addr(mut self, addr: impl Into<IpAddr>) -> Self {
-        self.local_addr = Some(addr.into());
-        self
-    }
-
-    /// Get hostname.
-    pub fn hostname(&self) -> &str {
-        self.req.hostname()
-    }
-
-    /// Get request port.
-    pub fn port(&self) -> u16 {
-        self.req.port().unwrap_or(self.port)
-    }
-
-    /// Get resolved request addresses.
-    pub fn addrs(&self) -> ConnectAddrsIter<'_> {
-        match self.addr {
-            ConnectAddrs::None => ConnectAddrsIter::None,
-            ConnectAddrs::One(addr) => ConnectAddrsIter::One(addr),
-            ConnectAddrs::Multi(ref addrs) => ConnectAddrsIter::Multi(addrs.iter()),
-        }
-    }
-
-    /// Take resolved request addresses.
-    pub fn take_addrs(&mut self) -> ConnectAddrsIter<'static> {
-        match mem::take(&mut self.addr) {
-            ConnectAddrs::None => ConnectAddrsIter::None,
-            ConnectAddrs::One(addr) => ConnectAddrsIter::One(addr),
-            ConnectAddrs::Multi(addrs) => ConnectAddrsIter::MultiOwned(addrs.into_iter()),
-        }
-    }
-}
-
-impl<T: Address> From<T> for Connect<T> {
-    fn from(addr: T) -> Self {
-        Connect::new(addr)
-    }
-}
-
-impl<T: Address> fmt::Display for Connect<T> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}:{}", self.hostname(), self.port())
-    }
-}
-
-/// Iterator over addresses in a [`Connect`] request.
-#[derive(Clone)]
-pub enum ConnectAddrsIter<'a> {
-    None,
-    One(SocketAddr),
-    Multi(vec_deque::Iter<'a, SocketAddr>),
-    MultiOwned(vec_deque::IntoIter<SocketAddr>),
-}
-
-impl Iterator for ConnectAddrsIter<'_> {
-    type Item = SocketAddr;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        match *self {
-            Self::None => None,
-            Self::One(addr) => {
-                *self = Self::None;
-                Some(addr)
-            }
-            Self::Multi(ref mut iter) => iter.next().copied(),
-            Self::MultiOwned(ref mut iter) => iter.next(),
-        }
-    }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        match *self {
-            Self::None => (0, Some(0)),
-            Self::One(_) => (1, Some(1)),
-            Self::Multi(ref iter) => iter.size_hint(),
-            Self::MultiOwned(ref iter) => iter.size_hint(),
-        }
-    }
-}
-
-impl fmt::Debug for ConnectAddrsIter<'_> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_list().entries(self.clone()).finish()
-    }
-}
-
-impl iter::ExactSizeIterator for ConnectAddrsIter<'_> {}
-
-impl iter::FusedIterator for ConnectAddrsIter<'_> {}
-
-pub struct Connection<T, U> {
-    io: U,
-    req: T,
-}
-
-impl<T, U> Connection<T, U> {
-    pub fn new(io: U, req: T) -> Self {
-        Self { io, req }
-    }
-}
-
-impl<T, U> Connection<T, U> {
-    /// Reconstruct from a parts.
-    pub fn from_parts(io: U, req: T) -> Self {
-        Self { io, req }
-    }
-
-    /// Deconstruct into a parts.
-    pub fn into_parts(self) -> (U, T) {
-        (self.io, self.req)
-    }
-
-    /// Replace inclosed object, return new Stream and old object
-    pub fn replace_io<Y>(self, io: Y) -> (U, Connection<T, Y>) {
-        (self.io, Connection { io, req: self.req })
-    }
-
-    /// Returns a shared reference to the underlying stream.
-    pub fn io_ref(&self) -> &U {
-        &self.io
-    }
-
-    /// Returns a mutable reference to the underlying stream.
-    pub fn io_mut(&mut self) -> &mut U {
-        &mut self.io
-    }
-}
-
-impl<T: Address, U> Connection<T, U> {
-    /// Get hostname.
-    pub fn host(&self) -> &str {
-        self.req.hostname()
-    }
-}
-
-impl<T, U> std::ops::Deref for Connection<T, U> {
-    type Target = U;
-
-    fn deref(&self) -> &U {
-        &self.io
-    }
-}
-
-impl<T, U> std::ops::DerefMut for Connection<T, U> {
-    fn deref_mut(&mut self) -> &mut U {
-        &mut self.io
-    }
-}
-
-impl<T, U: fmt::Debug> fmt::Debug for Connection<T, U> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "Stream {{{:?}}}", self.io)
-    }
-}
-
-fn parse_host(host: &str) -> (&str, Option<u16>) {
-    let mut parts_iter = host.splitn(2, ':');
-
-    match parts_iter.next() {
-        Some(hostname) => {
-            let port_str = parts_iter.next().unwrap_or("");
-            let port = port_str.parse::<u16>().ok();
-            (hostname, port)
-        }
-
-        None => (host, None),
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use std::net::Ipv4Addr;
-
-    use super::*;
-
-    #[test]
-    fn test_host_parser() {
-        assert_eq!(parse_host("example.com"), ("example.com", None));
-        assert_eq!(parse_host("example.com:8080"), ("example.com", Some(8080)));
-        assert_eq!(parse_host("example:8080"), ("example", Some(8080)));
-        assert_eq!(parse_host("example.com:false"), ("example.com", None));
-        assert_eq!(parse_host("example.com:false:false"), ("example.com", None));
-    }
-
-    #[test]
-    fn test_addr_iter_multi() {
-        let localhost = SocketAddr::from((IpAddr::from(Ipv4Addr::LOCALHOST), 8080));
-        let unspecified = SocketAddr::from((IpAddr::from(Ipv4Addr::UNSPECIFIED), 8080));
-
-        let mut addrs = VecDeque::new();
-        addrs.push_back(localhost);
-        addrs.push_back(unspecified);
-
-        let mut iter = ConnectAddrsIter::Multi(addrs.iter());
-        assert_eq!(iter.next(), Some(localhost));
-        assert_eq!(iter.next(), Some(unspecified));
-        assert_eq!(iter.next(), None);
-
-        let mut iter = ConnectAddrsIter::MultiOwned(addrs.into_iter());
-        assert_eq!(iter.next(), Some(localhost));
-        assert_eq!(iter.next(), Some(unspecified));
-        assert_eq!(iter.next(), None);
-    }
-
-    #[test]
-    fn test_addr_iter_single() {
-        let localhost = SocketAddr::from((IpAddr::from(Ipv4Addr::LOCALHOST), 8080));
-
-        let mut iter = ConnectAddrsIter::One(localhost);
-        assert_eq!(iter.next(), Some(localhost));
-        assert_eq!(iter.next(), None);
-
-        let mut iter = ConnectAddrsIter::None;
-        assert_eq!(iter.next(), None);
-    }
-
-    #[test]
-    fn test_local_addr() {
-        let conn = Connect::new("hello").set_local_addr([127, 0, 0, 1]);
-        assert_eq!(
-            conn.local_addr.unwrap(),
-            IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1))
-        )
-    }
-}

actix-tls/src/connect/connect_addrs.rs

@@ -0,0 +1,82 @@
+use std::{
+    collections::{vec_deque, VecDeque},
+    fmt, iter,
+    net::SocketAddr,
+};
+
+#[derive(Debug, Clone, Eq, PartialEq, Hash)]
+pub(crate) enum ConnectAddrs {
+    None,
+    One(SocketAddr),
+    // TODO: consider using smallvec
+    Multi(VecDeque<SocketAddr>),
+}
+
+impl ConnectAddrs {
+    pub(crate) fn is_unresolved(&self) -> bool {
+        matches!(self, Self::None)
+    }
+
+    pub(crate) fn is_resolved(&self) -> bool {
+        !self.is_unresolved()
+    }
+}
+
+impl Default for ConnectAddrs {
+    fn default() -> Self {
+        Self::None
+    }
+}
+
+impl From<Option<SocketAddr>> for ConnectAddrs {
+    fn from(addr: Option<SocketAddr>) -> Self {
+        match addr {
+            Some(addr) => ConnectAddrs::One(addr),
+            None => ConnectAddrs::None,
+        }
+    }
+}
+
+/// Iterator over addresses in a [`Connect`] request.
+#[derive(Clone)]
+pub(crate) enum ConnectAddrsIter<'a> {
+    None,
+    One(SocketAddr),
+    Multi(vec_deque::Iter<'a, SocketAddr>),
+    MultiOwned(vec_deque::IntoIter<SocketAddr>),
+}
+
+impl Iterator for ConnectAddrsIter<'_> {
+    type Item = SocketAddr;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        match *self {
+            Self::None => None,
+            Self::One(addr) => {
+                *self = Self::None;
+                Some(addr)
+            }
+            Self::Multi(ref mut iter) => iter.next().copied(),
+            Self::MultiOwned(ref mut iter) => iter.next(),
+        }
+    }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        match *self {
+            Self::None => (0, Some(0)),
+            Self::One(_) => (1, Some(1)),
+            Self::Multi(ref iter) => iter.size_hint(),
+            Self::MultiOwned(ref iter) => iter.size_hint(),
+        }
+    }
+}
+
+impl fmt::Debug for ConnectAddrsIter<'_> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_list().entries(self.clone()).finish()
+    }
+}
+
+impl iter::ExactSizeIterator for ConnectAddrsIter<'_> {}
+
+impl iter::FusedIterator for ConnectAddrsIter<'_> {}

actix-tls/src/connect/connection.rs

@@ -0,0 +1,54 @@
+use derive_more::{Deref, DerefMut};
+
+use super::Host;
+
+/// Wraps underlying I/O and the connection request that initiated it.
+#[derive(Debug, Deref, DerefMut)]
+pub struct Connection<R, IO> {
+    pub(crate) req: R,
+
+    #[deref]
+    #[deref_mut]
+    pub(crate) io: IO,
+}
+
+impl<R, IO> Connection<R, IO> {
+    /// Construct new `Connection` from request and IO parts.
+    pub(crate) fn new(req: R, io: IO) -> Self {
+        Self { req, io }
+    }
+}
+
+impl<R, IO> Connection<R, IO> {
+    /// Deconstructs into IO and request parts.
+    pub fn into_parts(self) -> (IO, R) {
+        (self.io, self.req)
+    }
+
+    /// Replaces underlying IO, returning old IO and new `Connection`.
+    pub fn replace_io<IO2>(self, io: IO2) -> (IO, Connection<R, IO2>) {
+        (self.io, Connection { io, req: self.req })
+    }
+
+    /// Returns a shared reference to the underlying IO.
+    pub fn io_ref(&self) -> &IO {
+        &self.io
+    }
+
+    /// Returns a mutable reference to the underlying IO.
+    pub fn io_mut(&mut self) -> &mut IO {
+        &mut self.io
+    }
+
+    /// Returns a reference to the connection request.
+    pub fn request(&self) -> &R {
+        &self.req
+    }
+}
+
+impl<R: Host, IO> Connection<R, IO> {
+    /// Returns hostname.
+    pub fn hostname(&self) -> &str {
+        self.req.hostname()
+    }
+}

actix-tls/src/connect/connector.rs

@@ -1,194 +1,128 @@
 use std::{
-    collections::VecDeque,
     future::Future,
-    io,
-    net::{IpAddr, SocketAddr, SocketAddrV4, SocketAddrV6},
     pin::Pin,
     task::{Context, Poll},
 };
 
-use actix_rt::net::{TcpSocket, TcpStream};
+use actix_rt::net::TcpStream;
 use actix_service::{Service, ServiceFactory};
-use futures_core::{future::LocalBoxFuture, ready};
-use log::{error, trace};
-use tokio_util::sync::ReusableBoxFuture;
+use actix_utils::future::{ok, Ready};
+use futures_core::ready;
 
-use super::connect::{Address, Connect, ConnectAddrs, Connection};
-use super::error::ConnectError;
+use super::{
+    error::ConnectError,
+    resolver::{Resolver, ResolverService},
+    tcp::{TcpConnector, TcpConnectorService},
+    ConnectInfo, Connection, Host,
+};
 
-/// TCP connector service factory
-#[derive(Debug, Copy, Clone)]
-pub struct TcpConnectorFactory;
+/// Combined resolver and TCP connector service factory.
+///
+/// Used to create [`ConnectorService`]s which receive connection information, resolve DNS if
+/// required, and return a TCP stream.
+#[derive(Clone, Default)]
+pub struct Connector {
+    resolver: Resolver,
+}
 
-impl TcpConnectorFactory {
-    /// Create TCP connector service
-    pub fn service(&self) -> TcpConnector {
-        TcpConnector
+impl Connector {
+    /// Constructs new connector factory with the given resolver.
+    pub fn new(resolver: Resolver) -> Self {
+        Connector { resolver }
+    }
+
+    /// Build connector service.
+    pub fn service(&self) -> ConnectorService {
+        ConnectorService {
+            tcp: TcpConnector::default().service(),
+            resolver: self.resolver.service(),
+        }
     }
 }
 
-impl<T: Address> ServiceFactory<Connect<T>> for TcpConnectorFactory {
-    type Response = Connection<T, TcpStream>;
+impl<R: Host> ServiceFactory<ConnectInfo<R>> for Connector {
+    type Response = Connection<R, TcpStream>;
     type Error = ConnectError;
     type Config = ();
-    type Service = TcpConnector;
+    type Service = ConnectorService;
     type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
 
     fn new_service(&self, _: ()) -> Self::Future {
-        let service = self.service();
-        Box::pin(async move { Ok(service) })
+        ok(self.service())
     }
 }
 
-/// TCP connector service
-#[derive(Debug, Copy, Clone)]
-pub struct TcpConnector;
+/// Combined resolver and TCP connector service.
+///
+/// Service implementation receives connection information, resolves DNS if required, and returns
+/// a TCP stream.
+#[derive(Clone, Default)]
+pub struct ConnectorService {
+    tcp: TcpConnectorService,
+    resolver: ResolverService,
+}
 
-impl<T: Address> Service<Connect<T>> for TcpConnector {
-    type Response = Connection<T, TcpStream>;
+impl<R: Host> Service<ConnectInfo<R>> for ConnectorService {
+    type Response = Connection<R, TcpStream>;
     type Error = ConnectError;
-    type Future = TcpConnectorResponse<T>;
+    type Future = ConnectServiceResponse<R>;
 
     actix_service::always_ready!();
 
-    fn call(&self, req: Connect<T>) -> Self::Future {
-        let port = req.port();
-        let Connect {
-            req,
-            addr,
-            local_addr,
-            ..
-        } = req;
-
-        TcpConnectorResponse::new(req, port, local_addr, addr)
+    fn call(&self, req: ConnectInfo<R>) -> Self::Future {
+        ConnectServiceResponse {
+            fut: ConnectFut::Resolve(self.resolver.call(req)),
+            tcp: self.tcp,
+        }
     }
 }
 
-/// TCP stream connector response future
-pub enum TcpConnectorResponse<T> {
-    Response {
-        req: Option<T>,
-        port: u16,
-        local_addr: Option<IpAddr>,
-        addrs: Option<VecDeque<SocketAddr>>,
-        stream: ReusableBoxFuture<Result<TcpStream, io::Error>>,
-    },
-    Error(Option<ConnectError>),
+/// Chains futures of resolve and connect steps.
+pub(crate) enum ConnectFut<R: Host> {
+    Resolve(<ResolverService as Service<ConnectInfo<R>>>::Future),
+    Connect(<TcpConnectorService as Service<ConnectInfo<R>>>::Future),
 }
 
-impl<T: Address> TcpConnectorResponse<T> {
-    pub(crate) fn new(
-        req: T,
-        port: u16,
-        local_addr: Option<IpAddr>,
-        addr: ConnectAddrs,
-    ) -> TcpConnectorResponse<T> {
-        if addr.is_none() {
-            error!("TCP connector: unresolved connection address");
-            return TcpConnectorResponse::Error(Some(ConnectError::Unresolved));
-        }
+/// Container for the intermediate states of [`ConnectFut`].
+pub(crate) enum ConnectFutState<R: Host> {
+    Resolved(ConnectInfo<R>),
+    Connected(Connection<R, TcpStream>),
+}
 
-        trace!(
-            "TCP connector: connecting to {} on port {}",
-            req.hostname(),
-            port
-        );
+impl<R: Host> ConnectFut<R> {
+    fn poll_connect(
+        &mut self,
+        cx: &mut Context<'_>,
+    ) -> Poll<Result<ConnectFutState<R>, ConnectError>> {
+        match self {
+            ConnectFut::Resolve(ref mut fut) => {
+                Pin::new(fut).poll(cx).map_ok(ConnectFutState::Resolved)
+            }
 
-        match addr {
-            ConnectAddrs::None => unreachable!("none variant already checked"),
-
-            ConnectAddrs::One(addr) => TcpConnectorResponse::Response {
-                req: Some(req),
-                port,
-                local_addr,
-                addrs: None,
-                stream: ReusableBoxFuture::new(connect(addr, local_addr)),
-            },
-
-            // when resolver returns multiple socket addr for request they would be popped from
-            // front end of queue and returns with the first successful tcp connection.
-            ConnectAddrs::Multi(mut addrs) => {
-                let addr = addrs.pop_front().unwrap();
-
-                TcpConnectorResponse::Response {
-                    req: Some(req),
-                    port,
-                    local_addr,
-                    addrs: Some(addrs),
-                    stream: ReusableBoxFuture::new(connect(addr, local_addr)),
-                }
+            ConnectFut::Connect(ref mut fut) => {
+                Pin::new(fut).poll(cx).map_ok(ConnectFutState::Connected)
             }
         }
     }
 }
 
-impl<T: Address> Future for TcpConnectorResponse<T> {
-    type Output = Result<Connection<T, TcpStream>, ConnectError>;
+pub struct ConnectServiceResponse<R: Host> {
+    fut: ConnectFut<R>,
+    tcp: TcpConnectorService,
+}
 
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        match self.get_mut() {
-            TcpConnectorResponse::Error(err) => Poll::Ready(Err(err.take().unwrap())),
+impl<R: Host> Future for ConnectServiceResponse<R> {
+    type Output = Result<Connection<R, TcpStream>, ConnectError>;
 
-            TcpConnectorResponse::Response {
-                req,
-                port,
-                local_addr,
-                addrs,
-                stream,
-            } => loop {
-                match ready!(stream.poll(cx)) {
-                    Ok(sock) => {
-                        let req = req.take().unwrap();
-                        trace!(
-                            "TCP connector: successfully connected to {:?} - {:?}",
-                            req.hostname(),
-                            sock.peer_addr()
-                        );
-                        return Poll::Ready(Ok(Connection::new(sock, req)));
-                    }
-
-                    Err(err) => {
-                        trace!(
-                            "TCP connector: failed to connect to {:?} port: {}",
-                            req.as_ref().unwrap().hostname(),
-                            port,
-                        );
-
-                        if let Some(addr) = addrs.as_mut().and_then(|addrs| addrs.pop_front()) {
-                            stream.set(connect(addr, *local_addr));
-                        } else {
-                            return Poll::Ready(Err(ConnectError::Io(err)));
-                        }
-                    }
+    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        loop {
+            match ready!(self.fut.poll_connect(cx))? {
+                ConnectFutState::Resolved(res) => {
+                    self.fut = ConnectFut::Connect(self.tcp.call(res));
                 }
-            },
+                ConnectFutState::Connected(res) => return Poll::Ready(Ok(res)),
+            }
         }
     }
 }
-
-async fn connect(addr: SocketAddr, local_addr: Option<IpAddr>) -> io::Result<TcpStream> {
-    // use local addr if connect asks for it.
-    match local_addr {
-        Some(ip_addr) => {
-            let socket = match ip_addr {
-                IpAddr::V4(ip_addr) => {
-                    let socket = TcpSocket::new_v4()?;
-                    let addr = SocketAddr::V4(SocketAddrV4::new(ip_addr, 0));
-                    socket.bind(addr)?;
-                    socket
-                }
-                IpAddr::V6(ip_addr) => {
-                    let socket = TcpSocket::new_v6()?;
-                    let addr = SocketAddr::V6(SocketAddrV6::new(ip_addr, 0, 0, 0));
-                    socket.bind(addr)?;
-                    socket
-                }
-            };
-
-            socket.connect(addr).await
-        }
-
-        None => TcpStream::connect(addr).await,
-    }
-}

actix-tls/src/connect/error.rs

@@ -1,15 +1,16 @@
-use std::io;
+use std::{error::Error, io};
 
 use derive_more::Display;
 
+/// Errors that can result from using a connector service.
 #[derive(Debug, Display)]
 pub enum ConnectError {
     /// Failed to resolve the hostname
-    #[display(fmt = "Failed resolving hostname: {}", _0)]
+    #[display(fmt = "Failed resolving hostname")]
     Resolver(Box<dyn std::error::Error>),
 
-    /// No dns records
-    #[display(fmt = "No dns records found for the input")]
+    /// No DNS records
+    #[display(fmt = "No DNS records found for the input")]
     NoRecords,
 
     /// Invalid input
@@ -23,3 +24,13 @@ pub enum ConnectError {
     #[display(fmt = "{}", _0)]
     Io(io::Error),
 }
+
+impl Error for ConnectError {
+    fn source(&self) -> Option<&(dyn Error + 'static)> {
+        match self {
+            Self::Resolver(err) => Some(&**err),
+            Self::Io(err) => Some(err),
+            Self::NoRecords | Self::InvalidInput | Self::Unresolved => None,
+        }
+    }
+}

actix-tls/src/connect/host.rs

@@ -0,0 +1,71 @@
+//! The [`Host`] trait.
+
+/// An interface for types where host parts (hostname and port) can be derived.
+///
+/// The [WHATWG URL Standard] defines the terminology used for this trait and its methods.
+///
+/// ```plain
+/// +------------------------+
+/// |          host          |
+/// +-----------------+------+
+/// |    hostname     | port |
+/// |                 |      |
+/// | sub.example.com : 8080 |
+/// +-----------------+------+
+/// ```
+///
+/// [WHATWG URL Standard]: https://url.spec.whatwg.org/
+pub trait Host: Unpin + 'static {
+    /// Extract hostname.
+    fn hostname(&self) -> &str;
+
+    /// Extract optional port.
+    fn port(&self) -> Option<u16> {
+        None
+    }
+}
+
+impl Host for String {
+    fn hostname(&self) -> &str {
+        self.split_once(':')
+            .map(|(hostname, _)| hostname)
+            .unwrap_or(self)
+    }
+
+    fn port(&self) -> Option<u16> {
+        self.split_once(':').and_then(|(_, port)| port.parse().ok())
+    }
+}
+
+impl Host for &'static str {
+    fn hostname(&self) -> &str {
+        self.split_once(':')
+            .map(|(hostname, _)| hostname)
+            .unwrap_or(self)
+    }
+
+    fn port(&self) -> Option<u16> {
+        self.split_once(':').and_then(|(_, port)| port.parse().ok())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    macro_rules! assert_connection_info_eq {
+        ($req:expr, $hostname:expr, $port:expr) => {{
+            assert_eq!($req.hostname(), $hostname);
+            assert_eq!($req.port(), $port);
+        }};
+    }
+
+    #[test]
+    fn host_parsing() {
+        assert_connection_info_eq!("example.com", "example.com", None);
+        assert_connection_info_eq!("example.com:8080", "example.com", Some(8080));
+        assert_connection_info_eq!("example:8080", "example", Some(8080));
+        assert_connection_info_eq!("example.com:false", "example.com", None);
+        assert_connection_info_eq!("example.com:false:false", "example.com", None);
+    }
+}

actix-tls/src/connect/info.rs

@@ -0,0 +1,249 @@
+//! Connection info struct.
+
+use std::{
+    collections::VecDeque,
+    fmt,
+    iter::{self, FromIterator as _},
+    mem,
+    net::{IpAddr, SocketAddr},
+};
+
+use super::{
+    connect_addrs::{ConnectAddrs, ConnectAddrsIter},
+    Host,
+};
+
+/// Connection request information.
+///
+/// May contain known/pre-resolved socket address(es) or a host that needs resolving with DNS.
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub struct ConnectInfo<R> {
+    pub(crate) request: R,
+    pub(crate) port: u16,
+    pub(crate) addr: ConnectAddrs,
+    pub(crate) local_addr: Option<IpAddr>,
+}
+
+impl<R: Host> ConnectInfo<R> {
+    /// Constructs new connection info using a request.
+    pub fn new(request: R) -> ConnectInfo<R> {
+        let port = request.port();
+
+        ConnectInfo {
+            request,
+            port: port.unwrap_or(0),
+            addr: ConnectAddrs::None,
+            local_addr: None,
+        }
+    }
+
+    /// Constructs new connection info from request and known socket address.
+    ///
+    /// Since socket address is known, [`Connector`](super::Connector) will skip the DNS
+    /// resolution step.
+    pub fn with_addr(request: R, addr: SocketAddr) -> ConnectInfo<R> {
+        ConnectInfo {
+            request,
+            port: 0,
+            addr: ConnectAddrs::One(addr),
+            local_addr: None,
+        }
+    }
+
+    /// Set connection port.
+    ///
+    /// If request provided a port, this will override it.
+    pub fn set_port(mut self, port: u16) -> Self {
+        self.port = port;
+        self
+    }
+
+    /// Set connection socket address.
+    pub fn set_addr(mut self, addr: impl Into<Option<SocketAddr>>) -> Self {
+        self.addr = ConnectAddrs::from(addr.into());
+        self
+    }
+
+    /// Set list of addresses.
+    pub fn set_addrs<I>(mut self, addrs: I) -> Self
+    where
+        I: IntoIterator<Item = SocketAddr>,
+    {
+        let mut addrs = VecDeque::from_iter(addrs);
+        self.addr = if addrs.len() < 2 {
+            ConnectAddrs::from(addrs.pop_front())
+        } else {
+            ConnectAddrs::Multi(addrs)
+        };
+        self
+    }
+
+    /// Set local address to connection with.
+    ///
+    /// Useful in situations where the IP address bound to a particular network interface is known.
+    /// This would make sure the socket is opened through that interface.
+    pub fn set_local_addr(mut self, addr: impl Into<IpAddr>) -> Self {
+        self.local_addr = Some(addr.into());
+        self
+    }
+
+    /// Returns a reference to the connection request.
+    pub fn request(&self) -> &R {
+        &self.request
+    }
+
+    /// Returns request hostname.
+    pub fn hostname(&self) -> &str {
+        self.request.hostname()
+    }
+
+    /// Returns request port.
+    pub fn port(&self) -> u16 {
+        self.request.port().unwrap_or(self.port)
+    }
+
+    /// Get borrowed iterator of resolved request addresses.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::net::SocketAddr;
+    /// # use actix_tls::connect::ConnectInfo;
+    /// let addr = SocketAddr::from(([127, 0, 0, 1], 4242));
+    ///
+    /// let conn = ConnectInfo::new("localhost");
+    /// let mut addrs = conn.addrs();
+    /// assert!(addrs.next().is_none());
+    ///
+    /// let conn = ConnectInfo::with_addr("localhost", addr);
+    /// let mut addrs = conn.addrs();
+    /// assert_eq!(addrs.next().unwrap(), addr);
+    /// ```
+    pub fn addrs(
+        &self,
+    ) -> impl Iterator<Item = SocketAddr>
+           + ExactSizeIterator
+           + iter::FusedIterator
+           + Clone
+           + fmt::Debug
+           + '_ {
+        match self.addr {
+            ConnectAddrs::None => ConnectAddrsIter::None,
+            ConnectAddrs::One(addr) => ConnectAddrsIter::One(addr),
+            ConnectAddrs::Multi(ref addrs) => ConnectAddrsIter::Multi(addrs.iter()),
+        }
+    }
+
+    /// Take owned iterator resolved request addresses.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::net::SocketAddr;
+    /// # use actix_tls::connect::ConnectInfo;
+    /// let addr = SocketAddr::from(([127, 0, 0, 1], 4242));
+    ///
+    /// let mut conn = ConnectInfo::new("localhost");
+    /// let mut addrs = conn.take_addrs();
+    /// assert!(addrs.next().is_none());
+    ///
+    /// let mut conn = ConnectInfo::with_addr("localhost", addr);
+    /// let mut addrs = conn.take_addrs();
+    /// assert_eq!(addrs.next().unwrap(), addr);
+    /// ```
+    pub fn take_addrs(
+        &mut self,
+    ) -> impl Iterator<Item = SocketAddr>
+           + ExactSizeIterator
+           + iter::FusedIterator
+           + Clone
+           + fmt::Debug
+           + 'static {
+        match mem::take(&mut self.addr) {
+            ConnectAddrs::None => ConnectAddrsIter::None,
+            ConnectAddrs::One(addr) => ConnectAddrsIter::One(addr),
+            ConnectAddrs::Multi(addrs) => ConnectAddrsIter::MultiOwned(addrs.into_iter()),
+        }
+    }
+}
+
+impl<R: Host> From<R> for ConnectInfo<R> {
+    fn from(addr: R) -> Self {
+        ConnectInfo::new(addr)
+    }
+}
+
+impl<R: Host> fmt::Display for ConnectInfo<R> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}:{}", self.hostname(), self.port())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::net::Ipv4Addr;
+
+    use super::*;
+
+    #[test]
+    fn test_addr_iter_multi() {
+        let localhost = SocketAddr::from((IpAddr::from(Ipv4Addr::LOCALHOST), 8080));
+        let unspecified = SocketAddr::from((IpAddr::from(Ipv4Addr::UNSPECIFIED), 8080));
+
+        let mut addrs = VecDeque::new();
+        addrs.push_back(localhost);
+        addrs.push_back(unspecified);
+
+        let mut iter = ConnectAddrsIter::Multi(addrs.iter());
+        assert_eq!(iter.next(), Some(localhost));
+        assert_eq!(iter.next(), Some(unspecified));
+        assert_eq!(iter.next(), None);
+
+        let mut iter = ConnectAddrsIter::MultiOwned(addrs.into_iter());
+        assert_eq!(iter.next(), Some(localhost));
+        assert_eq!(iter.next(), Some(unspecified));
+        assert_eq!(iter.next(), None);
+    }
+
+    #[test]
+    fn test_addr_iter_single() {
+        let localhost = SocketAddr::from((IpAddr::from(Ipv4Addr::LOCALHOST), 8080));
+
+        let mut iter = ConnectAddrsIter::One(localhost);
+        assert_eq!(iter.next(), Some(localhost));
+        assert_eq!(iter.next(), None);
+
+        let mut iter = ConnectAddrsIter::None;
+        assert_eq!(iter.next(), None);
+    }
+
+    #[test]
+    fn test_local_addr() {
+        let conn = ConnectInfo::new("hello").set_local_addr([127, 0, 0, 1]);
+        assert_eq!(
+            conn.local_addr.unwrap(),
+            IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1))
+        )
+    }
+
+    #[test]
+    fn request_ref() {
+        let conn = ConnectInfo::new("hello");
+        assert_eq!(conn.request(), &"hello")
+    }
+
+    #[test]
+    fn set_connect_addr_into_option() {
+        let addr = SocketAddr::from(([127, 0, 0, 1], 4242));
+
+        let conn = ConnectInfo::new("hello").set_addr(None);
+        let mut addrs = conn.addrs();
+        assert!(addrs.next().is_none());
+
+        let conn = ConnectInfo::new("hello").set_addr(addr);
+        let mut addrs = conn.addrs();
+        assert_eq!(addrs.next().unwrap(), addr);
+
+        let conn = ConnectInfo::new("hello").set_addr(Some(addr));
+        let mut addrs = conn.addrs();
+        assert_eq!(addrs.next().unwrap(), addr);
+    }
+}

actix-tls/src/connect/mod.rs

@@ -1,74 +1,46 @@
-//! TCP connector services for Actix ecosystem.
+//! TCP and TLS connector services.
 //!
 //! # Stages of the TCP connector service:
-//! - Resolve [`Address`] with given [`Resolver`] and collect list of socket addresses.
-//! - Establish TCP connection and return [`TcpStream`].
+//! 1. Resolve [`Host`] (if needed) with given [`Resolver`] and collect list of socket addresses.
+//! 1. Establish TCP connection and return [`TcpStream`].
 //!
 //! # Stages of TLS connector services:
-//! - Establish [`TcpStream`] with connector service.
-//! - Wrap the stream and perform connect handshake with remote peer.
-//! - Return certain stream type that impls `AsyncRead` and `AsyncWrite`.
-//!
-//! # Package feature
-//! * `openssl` - enables TLS support via `openssl` crate
-//! * `rustls` - enables TLS support via `rustls` crate
+//! 1. Resolve DNS and establish a [`TcpStream`] with the TCP connector service.
+//! 1. Wrap the stream and perform connect handshake with remote peer.
+//! 1. Return wrapped stream type that implements `AsyncRead` and `AsyncWrite`.
 //!
 //! [`TcpStream`]: actix_rt::net::TcpStream
 
-#[allow(clippy::module_inception)]
-mod connect;
+mod connect_addrs;
+mod connection;
 mod connector;
 mod error;
+mod host;
+mod info;
 mod resolve;
-mod service;
-pub mod ssl;
+mod resolver;
+pub mod tcp;
+
 #[cfg(feature = "uri")]
+#[cfg_attr(docsrs, doc(cfg(feature = "uri")))]
 mod uri;
 
-use actix_rt::net::TcpStream;
-use actix_service::{Service, ServiceFactory};
+#[cfg(feature = "openssl")]
+#[cfg_attr(docsrs, doc(cfg(feature = "openssl")))]
+pub mod openssl;
 
-pub use self::connect::{Address, Connect, Connection};
-pub use self::connector::{TcpConnector, TcpConnectorFactory};
+#[cfg(feature = "rustls")]
+#[cfg_attr(docsrs, doc(cfg(feature = "rustls")))]
+pub mod rustls;
+
+#[cfg(feature = "native-tls")]
+#[cfg_attr(docsrs, doc(cfg(feature = "native-tls")))]
+pub mod native_tls;
+
+pub use self::connection::Connection;
+pub use self::connector::{Connector, ConnectorService};
 pub use self::error::ConnectError;
-pub use self::resolve::{Resolve, Resolver, ResolverFactory};
-pub use self::service::{ConnectService, ConnectServiceFactory};
-
-/// Create TCP connector service.
-pub fn new_connector<T: Address + 'static>(
-    resolver: Resolver,
-) -> impl Service<Connect<T>, Response = Connection<T, TcpStream>, Error = ConnectError> + Clone
-{
-    ConnectServiceFactory::new(resolver).service()
-}
-
-/// Create TCP connector service factory.
-pub fn new_connector_factory<T: Address + 'static>(
-    resolver: Resolver,
-) -> impl ServiceFactory<
-    Connect<T>,
-    Config = (),
-    Response = Connection<T, TcpStream>,
-    Error = ConnectError,
-    InitError = (),
-> + Clone {
-    ConnectServiceFactory::new(resolver)
-}
-
-/// Create connector service with default parameters.
-pub fn default_connector<T: Address + 'static>(
-) -> impl Service<Connect<T>, Response = Connection<T, TcpStream>, Error = ConnectError> + Clone
-{
-    new_connector(Resolver::Default)
-}
-
-/// Create connector service factory with default parameters.
-pub fn default_connector_factory<T: Address + 'static>() -> impl ServiceFactory<
-    Connect<T>,
-    Config = (),
-    Response = Connection<T, TcpStream>,
-    Error = ConnectError,
-    InitError = (),
-> + Clone {
-    new_connector_factory(Resolver::Default)
-}
+pub use self::host::Host;
+pub use self::info::ConnectInfo;
+pub use self::resolve::Resolve;
+pub use self::resolver::{Resolver, ResolverService};

actix-tls/src/connect/native_tls.rs

@@ -0,0 +1,92 @@
+//! Native-TLS based connector service.
+//!
+//! See [`TlsConnector`] for main connector service factory docs.
+
+use std::io;
+
+use actix_rt::net::ActixStream;
+use actix_service::{Service, ServiceFactory};
+use actix_utils::future::{ok, Ready};
+use futures_core::future::LocalBoxFuture;
+use log::trace;
+use tokio_native_tls::{
+    native_tls::TlsConnector as NativeTlsConnector, TlsConnector as AsyncNativeTlsConnector,
+    TlsStream as AsyncTlsStream,
+};
+
+use crate::connect::{Connection, Host};
+
+pub mod reexports {
+    //! Re-exports from `native-tls` and `tokio-native-tls` that are useful for connectors.
+
+    pub use tokio_native_tls::native_tls::TlsConnector;
+
+    pub use tokio_native_tls::TlsStream as AsyncTlsStream;
+}
+
+/// Connector service and factory using `native-tls`.
+#[derive(Clone)]
+pub struct TlsConnector {
+    connector: AsyncNativeTlsConnector,
+}
+
+impl TlsConnector {
+    /// Constructs new connector service from a `native-tls` connector.
+    ///
+    /// This type is it's own service factory, so it can be used in that setting, too.
+    pub fn new(connector: NativeTlsConnector) -> Self {
+        Self {
+            connector: AsyncNativeTlsConnector::from(connector),
+        }
+    }
+}
+
+impl<R: Host, IO> ServiceFactory<Connection<R, IO>> for TlsConnector
+where
+    IO: ActixStream + 'static,
+{
+    type Response = Connection<R, AsyncTlsStream<IO>>;
+    type Error = io::Error;
+    type Config = ();
+    type Service = Self;
+    type InitError = ();
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        ok(self.clone())
+    }
+}
+
+/// The `native-tls` connector is both it's ServiceFactory and Service impl type.
+/// As the factory and service share the same type and state.
+impl<R, IO> Service<Connection<R, IO>> for TlsConnector
+where
+    R: Host,
+    IO: ActixStream + 'static,
+{
+    type Response = Connection<R, AsyncTlsStream<IO>>;
+    type Error = io::Error;
+    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+    actix_service::always_ready!();
+
+    fn call(&self, stream: Connection<R, IO>) -> Self::Future {
+        let (io, stream) = stream.replace_io(());
+        let connector = self.connector.clone();
+
+        Box::pin(async move {
+            trace!("SSL Handshake start for: {:?}", stream.hostname());
+            connector
+                .connect(stream.hostname(), io)
+                .await
+                .map(|res| {
+                    trace!("SSL Handshake success: {:?}", stream.hostname());
+                    stream.replace_io(res).1
+                })
+                .map_err(|e| {
+                    trace!("SSL Handshake error: {:?}", e);
+                    io::Error::new(io::ErrorKind::Other, format!("{}", e))
+                })
+        })
+    }
+}

actix-tls/src/connect/openssl.rs

@@ -0,0 +1,148 @@
+//! OpenSSL based connector service.
+//!
+//! See [`TlsConnector`] for main connector service factory docs.
+
+use std::{
+    future::Future,
+    io,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use actix_rt::net::ActixStream;
+use actix_service::{Service, ServiceFactory};
+use actix_utils::future::{ok, Ready};
+use futures_core::ready;
+use log::trace;
+use openssl::ssl::SslConnector;
+use tokio_openssl::SslStream as AsyncSslStream;
+
+use crate::connect::{Connection, Host};
+
+pub mod reexports {
+    //! Re-exports from `openssl` and `tokio-openssl` that are useful for connectors.
+
+    pub use openssl::ssl::{Error, HandshakeError, SslConnector, SslMethod};
+
+    pub use tokio_openssl::SslStream as AsyncSslStream;
+}
+
+/// Connector service factory using `openssl`.
+pub struct TlsConnector {
+    connector: SslConnector,
+}
+
+impl TlsConnector {
+    /// Constructs new connector service factory from an `openssl` connector.
+    pub fn new(connector: SslConnector) -> Self {
+        TlsConnector { connector }
+    }
+
+    /// Constructs new connector service from an `openssl` connector.
+    pub fn service(connector: SslConnector) -> TlsConnectorService {
+        TlsConnectorService { connector }
+    }
+}
+
+impl Clone for TlsConnector {
+    fn clone(&self) -> Self {
+        Self {
+            connector: self.connector.clone(),
+        }
+    }
+}
+
+impl<R, IO> ServiceFactory<Connection<R, IO>> for TlsConnector
+where
+    R: Host,
+    IO: ActixStream + 'static,
+{
+    type Response = Connection<R, AsyncSslStream<IO>>;
+    type Error = io::Error;
+    type Config = ();
+    type Service = TlsConnectorService;
+    type InitError = ();
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        ok(TlsConnectorService {
+            connector: self.connector.clone(),
+        })
+    }
+}
+
+/// Connector service using `openssl`.
+pub struct TlsConnectorService {
+    connector: SslConnector,
+}
+
+impl Clone for TlsConnectorService {
+    fn clone(&self) -> Self {
+        Self {
+            connector: self.connector.clone(),
+        }
+    }
+}
+
+impl<R, IO> Service<Connection<R, IO>> for TlsConnectorService
+where
+    R: Host,
+    IO: ActixStream,
+{
+    type Response = Connection<R, AsyncSslStream<IO>>;
+    type Error = io::Error;
+    type Future = ConnectFut<R, IO>;
+
+    actix_service::always_ready!();
+
+    fn call(&self, stream: Connection<R, IO>) -> Self::Future {
+        trace!("SSL Handshake start for: {:?}", stream.hostname());
+        let (io, stream) = stream.replace_io(());
+        let host = stream.hostname();
+
+        let config = self
+            .connector
+            .configure()
+            .expect("SSL connect configuration was invalid.");
+
+        let ssl = config
+            .into_ssl(host)
+            .expect("SSL connect configuration was invalid.");
+
+        ConnectFut {
+            io: Some(AsyncSslStream::new(ssl, io).unwrap()),
+            stream: Some(stream),
+        }
+    }
+}
+
+/// Connect future for OpenSSL service.
+#[doc(hidden)]
+pub struct ConnectFut<R, IO> {
+    io: Option<AsyncSslStream<IO>>,
+    stream: Option<Connection<R, ()>>,
+}
+
+impl<R: Host, IO> Future for ConnectFut<R, IO>
+where
+    R: Host,
+    IO: ActixStream,
+{
+    type Output = Result<Connection<R, AsyncSslStream<IO>>, io::Error>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        let this = self.get_mut();
+
+        match ready!(Pin::new(this.io.as_mut().unwrap()).poll_connect(cx)) {
+            Ok(_) => {
+                let stream = this.stream.take().unwrap();
+                trace!("SSL Handshake success: {:?}", stream.hostname());
+                Poll::Ready(Ok(stream.replace_io(this.io.take().unwrap()).1))
+            }
+            Err(e) => {
+                trace!("SSL Handshake error: {:?}", e);
+                Poll::Ready(Err(io::Error::new(io::ErrorKind::Other, format!("{}", e))))
+            }
+        }
+    }
+}

actix-tls/src/connect/resolve.rs

@@ -1,62 +1,13 @@
-use std::{
-    future::Future,
-    io,
-    net::SocketAddr,
-    pin::Pin,
-    rc::Rc,
-    task::{Context, Poll},
-    vec::IntoIter,
-};
+//! The [`Resolve`] trait.
 
-use actix_rt::task::{spawn_blocking, JoinHandle};
-use actix_service::{Service, ServiceFactory};
-use futures_core::{future::LocalBoxFuture, ready};
-use log::trace;
+use std::{error::Error as StdError, net::SocketAddr};
 
-use super::connect::{Address, Connect};
-use super::error::ConnectError;
+use futures_core::future::LocalBoxFuture;
 
-/// DNS Resolver Service Factory
-#[derive(Clone)]
-pub struct ResolverFactory {
-    resolver: Resolver,
-}
-
-impl ResolverFactory {
-    pub fn new(resolver: Resolver) -> Self {
-        Self { resolver }
-    }
-
-    pub fn service(&self) -> Resolver {
-        self.resolver.clone()
-    }
-}
-
-impl<T: Address> ServiceFactory<Connect<T>> for ResolverFactory {
-    type Response = Connect<T>;
-    type Error = ConnectError;
-    type Config = ();
-    type Service = Resolver;
-    type InitError = ();
-    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
-
-    fn new_service(&self, _: ()) -> Self::Future {
-        let service = self.resolver.clone();
-        Box::pin(async { Ok(service) })
-    }
-}
-
-/// DNS Resolver Service
-#[derive(Clone)]
-pub enum Resolver {
-    Default,
-    Custom(Rc<dyn Resolve>),
-}
-
-/// An interface for custom async DNS resolvers.
+/// Custom async DNS resolvers.
 ///
-/// # Usage
-/// ```rust
+/// # Examples
+/// ```
 /// use std::net::SocketAddr;
 ///
 /// use actix_tls::connect::{Resolve, Resolver};
@@ -89,155 +40,23 @@ pub enum Resolver {
 ///     }
 /// }
 ///
-/// let resolver = MyResolver {
+/// let my_resolver = MyResolver {
 ///     trust_dns: TokioAsyncResolver::tokio_from_system_conf().unwrap(),
 /// };
 ///
-/// // construct custom resolver
-/// let resolver = Resolver::new_custom(resolver);
-///
-/// // pass custom resolver to connector builder.
-/// // connector would then be usable as a service or awc's connector.
-/// let connector = actix_tls::connect::new_connector::<&str>(resolver.clone());
+/// // wrap custom resolver
+/// let resolver = Resolver::custom(my_resolver);
 ///
 /// // resolver can be passed to connector factory where returned service factory
-/// // can be used to construct new connector services.
-/// let factory = actix_tls::connect::new_connector_factory::<&str>(resolver);
+/// // can be used to construct new connector services for use in clients
+/// let factory = actix_tls::connect::Connector::new(resolver);
+/// let connector = factory.service();
 /// ```
 pub trait Resolve {
+    /// Given DNS lookup information, returns a future that completes with socket information.
     fn lookup<'a>(
         &'a self,
         host: &'a str,
         port: u16,
-    ) -> LocalBoxFuture<'a, Result<Vec<SocketAddr>, Box<dyn std::error::Error>>>;
-}
-
-impl Resolver {
-    /// Constructor for custom Resolve trait object and use it as resolver.
-    pub fn new_custom(resolver: impl Resolve + 'static) -> Self {
-        Self::Custom(Rc::new(resolver))
-    }
-
-    // look up with default resolver variant.
-    fn look_up<T: Address>(req: &Connect<T>) -> JoinHandle<io::Result<IntoIter<SocketAddr>>> {
-        let host = req.hostname();
-        // TODO: Connect should always return host with port if possible.
-        let host = if req
-            .hostname()
-            .splitn(2, ':')
-            .last()
-            .and_then(|p| p.parse::<u16>().ok())
-            .map(|p| p == req.port())
-            .unwrap_or(false)
-        {
-            host.to_string()
-        } else {
-            format!("{}:{}", host, req.port())
-        };
-
-        // run blocking DNS lookup in thread pool
-        spawn_blocking(move || std::net::ToSocketAddrs::to_socket_addrs(&host))
-    }
-}
-
-impl<T: Address> Service<Connect<T>> for Resolver {
-    type Response = Connect<T>;
-    type Error = ConnectError;
-    type Future = ResolverFuture<T>;
-
-    actix_service::always_ready!();
-
-    fn call(&self, req: Connect<T>) -> Self::Future {
-        if req.addr.is_some() {
-            ResolverFuture::Connected(Some(req))
-        } else if let Ok(ip) = req.hostname().parse() {
-            let addr = SocketAddr::new(ip, req.port());
-            let req = req.set_addr(Some(addr));
-            ResolverFuture::Connected(Some(req))
-        } else {
-            trace!("DNS resolver: resolving host {:?}", req.hostname());
-
-            match self {
-                Self::Default => {
-                    let fut = Self::look_up(&req);
-                    ResolverFuture::LookUp(fut, Some(req))
-                }
-
-                Self::Custom(resolver) => {
-                    let resolver = Rc::clone(&resolver);
-                    ResolverFuture::LookupCustom(Box::pin(async move {
-                        let addrs = resolver
-                            .lookup(req.hostname(), req.port())
-                            .await
-                            .map_err(ConnectError::Resolver)?;
-
-                        let req = req.set_addrs(addrs);
-
-                        if req.addr.is_none() {
-                            Err(ConnectError::NoRecords)
-                        } else {
-                            Ok(req)
-                        }
-                    }))
-                }
-            }
-        }
-    }
-}
-
-pub enum ResolverFuture<T: Address> {
-    Connected(Option<Connect<T>>),
-    LookUp(
-        JoinHandle<io::Result<IntoIter<SocketAddr>>>,
-        Option<Connect<T>>,
-    ),
-    LookupCustom(LocalBoxFuture<'static, Result<Connect<T>, ConnectError>>),
-}
-
-impl<T: Address> Future for ResolverFuture<T> {
-    type Output = Result<Connect<T>, ConnectError>;
-
-    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        match self.get_mut() {
-            Self::Connected(conn) => Poll::Ready(Ok(conn
-                .take()
-                .expect("ResolverFuture polled after finished"))),
-
-            Self::LookUp(fut, req) => {
-                let res = match ready!(Pin::new(fut).poll(cx)) {
-                    Ok(Ok(res)) => Ok(res),
-                    Ok(Err(e)) => Err(ConnectError::Resolver(Box::new(e))),
-                    Err(e) => Err(ConnectError::Io(e.into())),
-                };
-
-                let req = req.take().unwrap();
-
-                let addrs = res.map_err(|err| {
-                    trace!(
-                        "DNS resolver: failed to resolve host {:?} err: {:?}",
-                        req.hostname(),
-                        err
-                    );
-
-                    err
-                })?;
-
-                let req = req.set_addrs(addrs);
-
-                trace!(
-                    "DNS resolver: host {:?} resolved to {:?}",
-                    req.hostname(),
-                    req.addrs()
-                );
-
-                if req.addr.is_none() {
-                    Poll::Ready(Err(ConnectError::NoRecords))
-                } else {
-                    Poll::Ready(Ok(req))
-                }
-            }
-
-            Self::LookupCustom(fut) => fut.as_mut().poll(cx),
-        }
-    }
+    ) -> LocalBoxFuture<'a, Result<Vec<SocketAddr>, Box<dyn StdError>>>;
 }

actix-tls/src/connect/resolver.rs

@@ -0,0 +1,201 @@
+use std::{
+    future::Future,
+    io,
+    net::SocketAddr,
+    pin::Pin,
+    rc::Rc,
+    task::{Context, Poll},
+    vec::IntoIter,
+};
+
+use actix_rt::task::{spawn_blocking, JoinHandle};
+use actix_service::{Service, ServiceFactory};
+use actix_utils::future::{ok, Ready};
+use futures_core::{future::LocalBoxFuture, ready};
+use log::trace;
+
+use super::{ConnectError, ConnectInfo, Host, Resolve};
+
+/// DNS resolver service factory.
+#[derive(Clone, Default)]
+pub struct Resolver {
+    resolver: ResolverService,
+}
+
+impl Resolver {
+    /// Constructs a new resolver factory with a custom resolver.
+    pub fn custom(resolver: impl Resolve + 'static) -> Self {
+        Self {
+            resolver: ResolverService::custom(resolver),
+        }
+    }
+
+    /// Returns a new resolver service.
+    pub fn service(&self) -> ResolverService {
+        self.resolver.clone()
+    }
+}
+
+impl<R: Host> ServiceFactory<ConnectInfo<R>> for Resolver {
+    type Response = ConnectInfo<R>;
+    type Error = ConnectError;
+    type Config = ();
+    type Service = ResolverService;
+    type InitError = ();
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        ok(self.resolver.clone())
+    }
+}
+
+#[derive(Clone)]
+enum ResolverKind {
+    /// Built-in DNS resolver.
+    ///
+    /// See [`std::net::ToSocketAddrs`] trait.
+    Default,
+
+    /// Custom, user-provided DNS resolver.
+    Custom(Rc<dyn Resolve>),
+}
+
+impl Default for ResolverKind {
+    fn default() -> Self {
+        Self::Default
+    }
+}
+
+/// DNS resolver service.
+#[derive(Clone, Default)]
+pub struct ResolverService {
+    kind: ResolverKind,
+}
+
+impl ResolverService {
+    /// Constructor for custom Resolve trait object and use it as resolver.
+    pub fn custom(resolver: impl Resolve + 'static) -> Self {
+        Self {
+            kind: ResolverKind::Custom(Rc::new(resolver)),
+        }
+    }
+
+    /// Resolve DNS with default resolver.
+    fn default_lookup<R: Host>(
+        req: &ConnectInfo<R>,
+    ) -> JoinHandle<io::Result<IntoIter<SocketAddr>>> {
+        // reconstruct host; concatenate hostname and port together
+        let host = format!("{}:{}", req.hostname(), req.port());
+
+        // run blocking DNS lookup in thread pool since DNS lookups can take upwards of seconds on
+        // some platforms if conditions are poor and OS-level cache is not populated
+        spawn_blocking(move || std::net::ToSocketAddrs::to_socket_addrs(&host))
+    }
+}
+
+impl<R: Host> Service<ConnectInfo<R>> for ResolverService {
+    type Response = ConnectInfo<R>;
+    type Error = ConnectError;
+    type Future = ResolverFut<R>;
+
+    actix_service::always_ready!();
+
+    fn call(&self, req: ConnectInfo<R>) -> Self::Future {
+        if req.addr.is_resolved() {
+            // socket address(es) already resolved; return existing connection request
+            ResolverFut::Resolved(Some(req))
+        } else if let Ok(ip) = req.hostname().parse() {
+            // request hostname is valid ip address; add address to request and return
+            let addr = SocketAddr::new(ip, req.port());
+            let req = req.set_addr(Some(addr));
+            ResolverFut::Resolved(Some(req))
+        } else {
+            trace!("DNS resolver: resolving host {:?}", req.hostname());
+
+            match &self.kind {
+                ResolverKind::Default => {
+                    let fut = Self::default_lookup(&req);
+                    ResolverFut::LookUp(fut, Some(req))
+                }
+
+                ResolverKind::Custom(resolver) => {
+                    let resolver = Rc::clone(resolver);
+
+                    ResolverFut::LookupCustom(Box::pin(async move {
+                        let addrs = resolver
+                            .lookup(req.hostname(), req.port())
+                            .await
+                            .map_err(ConnectError::Resolver)?;
+
+                        let req = req.set_addrs(addrs);
+
+                        if req.addr.is_unresolved() {
+                            Err(ConnectError::NoRecords)
+                        } else {
+                            Ok(req)
+                        }
+                    }))
+                }
+            }
+        }
+    }
+}
+
+/// Future for resolver service.
+#[doc(hidden)]
+pub enum ResolverFut<R: Host> {
+    Resolved(Option<ConnectInfo<R>>),
+    LookUp(
+        JoinHandle<io::Result<IntoIter<SocketAddr>>>,
+        Option<ConnectInfo<R>>,
+    ),
+    LookupCustom(LocalBoxFuture<'static, Result<ConnectInfo<R>, ConnectError>>),
+}
+
+impl<R: Host> Future for ResolverFut<R> {
+    type Output = Result<ConnectInfo<R>, ConnectError>;
+
+    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        match self.get_mut() {
+            Self::Resolved(conn) => Poll::Ready(Ok(conn
+                .take()
+                .expect("ResolverFuture polled after finished"))),
+
+            Self::LookUp(fut, req) => {
+                let res = match ready!(Pin::new(fut).poll(cx)) {
+                    Ok(Ok(res)) => Ok(res),
+                    Ok(Err(e)) => Err(ConnectError::Resolver(Box::new(e))),
+                    Err(e) => Err(ConnectError::Io(e.into())),
+                };
+
+                let req = req.take().unwrap();
+
+                let addrs = res.map_err(|err| {
+                    trace!(
+                        "DNS resolver: failed to resolve host {:?} err: {:?}",
+                        req.hostname(),
+                        err
+                    );
+
+                    err
+                })?;
+
+                let req = req.set_addrs(addrs);
+
+                trace!(
+                    "DNS resolver: host {:?} resolved to {:?}",
+                    req.hostname(),
+                    req.addrs()
+                );
+
+                if req.addr.is_unresolved() {
+                    Poll::Ready(Err(ConnectError::NoRecords))
+                } else {
+                    Poll::Ready(Ok(req))
+                }
+            }
+
+            Self::LookupCustom(fut) => fut.as_mut().poll(cx),
+        }
+    }
+}