build(deps): bump socket2 from 0.5.8 to 0.5.9 (#661)

Bumps [socket2](https://github.com/rust-lang/socket2) from 0.5.8 to 0.5.9.
- [Release notes](https://github.com/rust-lang/socket2/releases)
- [Changelog](https://github.com/rust-lang/socket2/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/socket2/commits)

---
updated-dependencies:
- dependency-name: socket2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.cargo/config.toml

@@ -1,3 +1,15 @@
 [alias]
-chk = "check --workspace --all-features --tests --examples --bins"
-lint = "clippy --workspace --all-features --tests --examples --bins -- -Dclippy::todo"
+lint = "clippy --workspace --tests --examples --bins -- -Dclippy::todo"
+lint-all = "clippy --workspace --all-features --tests --examples --bins -- -Dclippy::todo"
+
+# just check the library (without dev deps)
+ci-check-min = "hack --workspace check --no-default-features"
+ci-check-lib = "hack --workspace --feature-powerset --depth=2 --exclude-features=io-uring check"
+ci-check-lib-linux = "hack --workspace --feature-powerset --depth=2 check"
+
+# check everything
+ci-check = "hack --workspace --feature-powerset --depth=2 --exclude-features=io-uring check --tests --examples"
+ci-check-linux = "hack --workspace --feature-powerset --depth=2 check --tests --examples"
+
+# tests avoiding io-uring feature
+ci-test = "hack --feature-powerset --depth=2 --exclude-features=io-uring test --lib --tests --no-fail-fast -- --nocapture"

.envrc

@@ -0,0 +1 @@
+use flake

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,12 @@
 ## PR Type
+
 <!-- What kind of change does this PR make? -->
 <!-- Bug Fix / Feature / Refactor / Code Style / Other -->
+
 INSERT_PR_TYPE
 
-
 ## PR Checklist
+
 Check your PR fulfills the following:
 
 <!-- For draft PRs check the boxes as you complete them. -->
@@ -14,11 +16,10 @@ Check your PR fulfills the following:
 - [ ] A changelog entry has been made for the appropriate packages.
 - [ ] Format code with the latest stable rustfmt
 
-
 ## Overview
+
 <!-- Describe the current and new behavior. -->
 <!-- Emphasize any breaking changes. -->
 
-
 <!-- If this PR fixes or closes an issue, reference it here. -->
 <!-- Closes #000 -->

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+  - package-ecosystem: cargo
+    directory: /
+    schedule:
+      interval: weekly

.github/workflows/ci-post-merge.yml

@@ -0,0 +1,129 @@
+name: CI (post-merge)
+
+on:
+  push:
+    branches: [master]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build_and_test_nightly:
+    strategy:
+      fail-fast: false
+      matrix:
+        # prettier-ignore
+        target:
+          - { name: Linux, os: ubuntu-latest, triple: x86_64-unknown-linux-gnu }
+          - { name: macOS, os: macos-latest, triple: x86_64-apple-darwin }
+          - { name: Windows, os: windows-latest, triple: x86_64-pc-windows-msvc }
+          - { name: Windows (MinGW), os: windows-latest, triple: x86_64-pc-windows-gnu }
+        version:
+          - nightly
+
+    name: ${{ matrix.target.name }} / ${{ matrix.version }}
+    runs-on: ${{ matrix.target.os }}
+
+    env: {}
+
+    steps:
+      - name: Setup Routing
+        if: matrix.target.os == 'macos-latest'
+        run: sudo ifconfig lo0 alias 127.0.0.3
+
+      - uses: actions/checkout@v4
+
+      - name: Free Disk Space
+        if: matrix.target.os == 'ubuntu-latest'
+        run: ./scripts/free-disk-space.sh
+
+      - name: Setup mold linker
+        if: matrix.target.os == 'ubuntu-latest'
+        uses: rui314/setup-mold@v1
+
+      - name: Install nasm
+        if: matrix.target.os == 'windows-latest'
+        uses: ilammy/setup-nasm@v1.5.2
+
+      - name: Install OpenSSL
+        if: matrix.target.os == 'windows-latest'
+        shell: bash
+        run: |
+          set -e
+          choco install openssl --version=1.1.1.2100 -y --no-progress
+          echo 'OPENSSL_DIR=C:\Program Files\OpenSSL' >> $GITHUB_ENV
+          echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV
+
+      - name: Install Rust (${{ matrix.version }})
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          toolchain: ${{ matrix.version }}
+
+      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
+        uses: taiki-e/install-action@v2.49.40
+        with:
+          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean
+
+      - name: check lib
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: cargo ci-check-lib
+      - name: check lib
+        if: matrix.target.os == 'ubuntu-latest'
+        run: cargo ci-check-lib-linux
+      - name: check lib
+        if: matrix.target.triple == 'x86_64-pc-windows-gnu'
+        run: cargo ci-check-min
+
+      - name: check full
+        # TODO: compile OpenSSL and run tests on MinGW
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: cargo ci-check
+      - name: check all
+        if: matrix.target.os == 'ubuntu-latest'
+        run: cargo ci-check-linux
+
+      - name: tests
+        run: just test
+
+      # TODO: re-instate some io-uring tests PRs
+      # - name: tests
+      #   if: matrix.target.os == 'ubuntu-latest'
+      #   run: >-
+      #     sudo bash -c "
+      #     ulimit -Sl 512
+      #     && ulimit -Hl 512
+      #     && PATH=$PATH:/usr/share/rust/.cargo/bin
+      #     && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-rustls-020
+      #     && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-rustls-021
+      #     && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-linux
+      #     "
+
+      - name: CI cache clean
+        run: cargo-ci-cache-clean
+
+  minimal-versions:
+    name: minimal versions
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (nightly)
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          toolchain: nightly
+
+      - name: Install cargo-hack & cargo-minimal-versions
+        uses: taiki-e/install-action@v2.49.40
+        with:
+          tool: cargo-hack,cargo-minimal-versions
+
+      - name: Check With Minimal Versions
+        run: cargo minimal-versions check

.github/workflows/ci.yml

@@ -1,131 +1,133 @@
 name: CI
 
 on:
-  pull_request:
-    types: [opened, synchronize, reopened]
-  push:
-    branches: [master]
+  pull_request: {}
+  merge_group: { types: [checks_requested] }
+  push: { branches: [master] }
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
+  read_msrv:
+    name: Read MSRV
+    uses: actions-rust-lang/msrv/.github/workflows/msrv.yml@v0.1.0
+
   build_and_test:
+    needs:
+      - read_msrv
+
     strategy:
       fail-fast: false
       matrix:
+        # prettier-ignore
         target:
           - { name: Linux, os: ubuntu-latest, triple: x86_64-unknown-linux-gnu }
           - { name: macOS, os: macos-latest, triple: x86_64-apple-darwin }
           - { name: Windows, os: windows-latest, triple: x86_64-pc-windows-msvc }
           - { 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
-          - stable
-          - nightly
+          - { name: msrv, version: "${{ needs.read_msrv.outputs.msrv }}" }
+          - { name: stable, version: stable }
 
-    name: ${{ matrix.target.name }} / ${{ matrix.version }}
+    name: ${{ matrix.target.name }} / ${{ matrix.version.name }}
     runs-on: ${{ matrix.target.os }}
 
-    env:
-      VCPKGRS_DYNAMIC: 1
+    env: {}
 
     steps:
       - name: Setup Routing
         if: matrix.target.os == 'macos-latest'
         run: sudo ifconfig lo0 alias 127.0.0.3
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+
+      - name: Free Disk Space
+        if: matrix.target.os == 'ubuntu-latest'
+        run: ./scripts/free-disk-space.sh
+
+      - name: Setup mold linker
+        if: matrix.target.os == 'ubuntu-latest'
+        uses: rui314/setup-mold@v1
+
+      - name: Install nasm
+        if: matrix.target.os == 'windows-latest'
+        uses: ilammy/setup-nasm@v1.5.2
 
-      # install OpenSSL on Windows
-      - name: Set vcpkg root
-        if: matrix.target.triple == 'x86_64-pc-windows-msvc' || matrix.target.triple == 'i686-pc-windows-msvc'
-        run: echo "VCPKG_ROOT=$env:VCPKG_INSTALLATION_ROOT" | Out-File -FilePath $env:GITHUB_ENV -Append
       - name: Install OpenSSL
-        if: matrix.target.triple == 'x86_64-pc-windows-msvc'
-        run: vcpkg install openssl:x64-windows
-      - name: Install OpenSSL
-        if: matrix.target.triple == 'i686-pc-windows-msvc'
-        run: vcpkg install openssl:x86-windows
+        if: matrix.target.os == 'windows-latest'
+        shell: bash
+        run: |
+          set -e
+          choco install openssl --version=1.1.1.2100 -y --no-progress
+          echo 'OPENSSL_DIR=C:\Program Files\OpenSSL' >> $GITHUB_ENV
+          echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV
 
-      - name: Install ${{ matrix.version }}
-        uses: actions-rs/toolchain@v1
+      - name: Install Rust (${{ matrix.version.name }})
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
         with:
-          toolchain: ${{ matrix.version }}-${{ matrix.target.triple }}
-          profile: minimal
-          override: true
+          toolchain: ${{ matrix.version.version }}
 
-      # - name: Install MSYS2
-      #   if: matrix.target.triple == 'x86_64-pc-windows-gnu'
-      #   uses: msys2/setup-msys2@v2
-      # - name: Install MinGW Packages
-      #   if: matrix.target.triple == 'x86_64-pc-windows-gnu'
-      #   run: |
-      #     msys2 -c 'pacman -Sy --noconfirm pacman'
-      #     msys2 -c 'pacman --noconfirm -S base-devel pkg-config'
-
-      # - name: Generate Cargo.lock
-      #   uses: actions-rs/cargo@v1
-      #   with:
-      #     command: generate-lockfile
-      # - name: Cache Dependencies
-      #   uses: Swatinem/rust-cache@v1.2.0
-
-      - name: Install cargo-hack
-        uses: actions-rs/cargo@v1
+      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
+        uses: taiki-e/install-action@v2.49.40
         with:
-          command: install
-          args: cargo-hack
+          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean
 
-      - name: check minimal
-        uses: actions-rs/cargo@v1
-        with:
-          command: hack
-          args: check --workspace --no-default-features
+      - name: Generate Cargo.lock
+        run: cargo generate-lockfile
 
-      - name: check minimal + tests
-        uses: actions-rs/cargo@v1
-        with:
-          command: hack
-          args: check --workspace --no-default-features --tests --examples
+      - name: workaround MSRV issues
+        if: matrix.version.name == 'msrv'
+        run: just downgrade-for-msrv
 
-      - name: check default
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --workspace --tests --examples
+      - name: check lib
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: cargo ci-check-lib
+      - name: check lib
+        if: matrix.target.os == 'ubuntu-latest'
+        run: cargo ci-check-lib-linux
+      - name: check lib
+        if: matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: cargo ci-check-min
 
       - name: check full
         # TODO: compile OpenSSL and run tests on MinGW
-        if: matrix.target.triple != 'x86_64-pc-windows-gnu'
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --workspace --all-features --tests --examples
+        if: >
+          matrix.target.os != 'ubuntu-latest'
+          && matrix.target.triple != 'x86_64-pc-windows-gnu'
+        run: cargo ci-check
+      - name: check all
+        if: matrix.target.os == 'ubuntu-latest'
+        run: cargo ci-check-linux
 
       - name: tests
-        if: matrix.target.triple != 'x86_64-pc-windows-gnu'
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --workspace --all-features --no-fail-fast -- --nocapture
+        run: just test
 
-      - name: Generate coverage file
-        if: >
-          matrix.target.os == 'ubuntu-latest'
-          && matrix.version == 'stable'
-          && 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'
-        uses: codecov/codecov-action@v1
-        with:
-          file: cobertura.xml
+      - name: CI cache clean
+        run: cargo-ci-cache-clean
 
-      - name: Clear the cargo caches
-        run: |
-          cargo install cargo-cache --version 0.6.2 --no-default-features --features ci-autoclean
-          cargo-cache
+  docs:
+    name: Documentation
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (nightly)
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          toolchain: nightly
+
+      - name: Install just
+        uses: taiki-e/install-action@v2.49.40
+        with:
+          tool: just
+
+      - name: doc tests
+        run: just test-docs

.github/workflows/clippy-fmt.yml

@@ -1,42 +0,0 @@
-name: Lint
-
-on:
-  pull_request:
-    types: [opened, synchronize, reopened]
-
-jobs:
-  fmt:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          components: rustfmt
-          override: true
-      - name: Rustfmt Check
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
-
-  clippy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-          components: clippy
-          override: true
-      - name: Clippy Check
-        uses: actions-rs/clippy-check@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          args: --workspace --all-features --tests --examples --bins -- -Dclippy::todo

.github/workflows/coverage.yml

@@ -0,0 +1,39 @@
+name: Coverage
+
+on:
+  push:
+    branches: [master]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          components: llvm-tools-preview
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@v2.49.40
+        with:
+          tool: cargo-llvm-cov
+
+      - name: Generate code coverage
+        run: cargo llvm-cov --workspace --all-features --codecov --output-path codecov.json
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5.4.0
+        with:
+          files: codecov.json
+          fail_ci_if_error: true
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/lint.yml

@@ -0,0 +1,69 @@
+name: Lint
+
+on:
+  pull_request: {}
+  merge_group: { types: [checks_requested] }
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          toolchain: nightly
+          components: rustfmt
+
+      - name: Rustfmt Check
+        run: cargo fmt --all -- --check
+
+  clippy:
+    permissions:
+      contents: write
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with: { components: clippy }
+
+      - uses: giraffate/clippy-action@v1.0.1
+        with:
+          reporter: "github-pr-check"
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          clippy_flags: --workspace --all-features --tests --examples --bins -- -Dclippy::todo -Aunknown_lints
+
+  check-external-types:
+    if: false # rustdoc mismatch currently
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust (${{ vars.RUST_VERSION_EXTERNAL_TYPES }})
+        uses: actions-rust-lang/setup-rust-toolchain@v1.11.0
+        with:
+          toolchain: ${{ vars.RUST_VERSION_EXTERNAL_TYPES }}
+
+      - name: Install just
+        uses: taiki-e/install-action@v2.49.40
+        with:
+          tool: just
+
+      - name: Install cargo-check-external-types
+        uses: taiki-e/cache-cargo-install-action@v2.1.1
+        with:
+          tool: cargo-check-external-types
+
+      - name: check external types
+        run: just check-external-types-all +${{ vars.RUST_VERSION_EXTERNAL_TYPES }}

.github/workflows/upload-doc.yml

@@ -1,35 +0,0 @@
-name: Upload documentation
-
-on:
-  push:
-    branches: [master]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-x86_64-unknown-linux-gnu
-          profile: minimal
-          override: true
-
-      - name: Build Docs
-        uses: actions-rs/cargo@v1
-        with:
-          command: doc
-          args: --workspace --all-features --no-deps
-
-      - name: Tweak HTML
-        run: echo '<meta http-equiv="refresh" content="0;url=actix_server/index.html">' > target/doc/index.html
-
-      - name: Deploy to GitHub Pages
-        uses: JamesIves/github-pages-deploy-action@3.7.1
-        with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH: gh-pages
-          FOLDER: target/doc

.gitignore

@@ -1,4 +1,3 @@
-Cargo.lock
 target/
 guide/build/
 /gh-pages
@@ -13,4 +12,8 @@ guide/build/
 # These are backup files generated by rustfmt
 **/*.rs.bk
 
+# IDEs
 .idea
+
+# direnv
+/.direnv

.rustfmt.toml

@@ -0,0 +1,3 @@
+group_imports = "StdExternalCrate"
+imports_granularity = "Crate"
+use_field_init_shorthand = true

.taplo.toml

@@ -0,0 +1,29 @@
+exclude = ["target/*"]
+include = ["**/*.toml"]
+
+[formatting]
+column_width = 110
+
+[[rule]]
+include = ["**/Cargo.toml"]
+keys = [
+  "dependencies",
+  "*-dependencies",
+  "workspace.dependencies",
+  "workspace.*-dependencies",
+  "target.*.dependencies",
+  "target.*.*-dependencies",
+]
+formatting.reorder_keys = true
+
+[[rule]]
+include = ["**/Cargo.toml"]
+keys = [
+  "dependencies.*",
+  "*-dependencies.*",
+  "workspace.dependencies.*",
+  "workspace.*-dependencies.*",
+  "target.*.dependencies",
+  "target.*.*-dependencies",
+]
+formatting.reorder_keys = false

CODE_OF_CONDUCT.md

@@ -8,19 +8,19 @@ In the interest of fostering an open and welcoming environment, we as contributo
 
 Examples of behavior that contributes to creating a positive environment include:
 
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
 
 Examples of unacceptable behavior by participants include:
 
-* The use of sexualized language or imagery and unwelcome sexual attention or advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a professional setting
+- The use of sexualized language or imagery and unwelcome sexual attention or advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a professional setting
 
 ## Our Responsibilities
 
@@ -39,7 +39,7 @@ Instances of abusive, harassing, or otherwise unacceptable behavior may be repor
 Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
 
 [@robjtede]: https://github.com/robjtede
-[@JohnTitor]: https://github.com/JohnTitor
+[@johntitor]: https://github.com/JohnTitor
 
 ## Attribution
 

Cargo.toml

@@ -1,8 +1,8 @@
 [workspace]
+resolver = "2"
 members = [
   "actix-codec",
   "actix-macros",
-  "actix-router",
   "actix-rt",
   "actix-server",
   "actix-service",
@@ -14,10 +14,14 @@ members = [
   "local-waker",
 ]
 
+[workspace.package]
+license = "MIT OR Apache-2.0"
+edition = "2021"
+rust-version = "1.71.1"
+
 [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" }
@@ -32,3 +36,9 @@ local-waker = { path = "local-waker" }
 lto = true
 opt-level = 3
 codegen-units = 1
+
+[workspace.lints.rust]
+rust_2018_idioms = "deny"
+nonstandard-style = "deny"
+future_incompatible = "deny"
+missing_docs = { level = "warn", priority = -1 }

README.md

@@ -2,29 +2,25 @@
 
 > A collection of lower-level libraries for composable network services.
 
-![Apache 2.0 or MIT licensed](https://img.shields.io/crates/l/actix-server)
-[![codecov](https://codecov.io/gh/actix/actix-net/branch/master/graph/badge.svg)](https://codecov.io/gh/actix/actix-net)
+[![CI](https://github.com/actix/actix-net/actions/workflows/ci.yml/badge.svg?event=push&style=flat-square)](https://github.com/actix/actix-net/actions/workflows/ci.yml)
+[![codecov](https://codecov.io/gh/actix/actix-net/graph/badge.svg?token=8rKIZKtLLm)](https://codecov.io/gh/actix/actix-net)
 [![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+[![Dependency Status](https://deps.rs/repo/github/actix/actix-net/status.svg)](https://deps.rs/repo/github/actix/actix-net)
 
-## Build statuses
-| Platform         | Build Status |
-| ---------------- | ------------ |
-| Linux            | [![build status](https://github.com/actix/actix-net/workflows/CI%20%28Linux%29/badge.svg?branch=master&event=push)](https://github.com/actix/actix-net/actions?query=workflow%3A"CI+(Linux)") |
-| macOS            | [![build status](https://github.com/actix/actix-net/workflows/CI%20%28macOS%29/badge.svg?branch=master&event=push)](https://github.com/actix/actix-net/actions?query=workflow%3A"CI+(macOS)") |
-| Windows          | [![build status](https://github.com/actix/actix-net/workflows/CI%20%28Windows%29/badge.svg?branch=master&event=push)](https://github.com/actix/actix-net/actions?query=workflow%3A"CI+(Windows)") |
-| Windows (MinGW)  | [![build status](https://github.com/actix/actix-net/workflows/CI%20%28Windows-mingw%29/badge.svg?branch=master&event=push)](https://github.com/actix/actix-net/actions?query=workflow%3A"CI+(Windows-mingw)") |
+## Examples
 
-## Example
-See `actix-server/examples` and `actix-tls/examples` for some basic examples.
+See example folders for [`actix-server`](./actix-server/examples) and [`actix-tls`](./actix-tls/examples).
 
-### MSRV
-This repo's Minimum Supported Rust Version (MSRV) is 1.46.0.
+## MSRV
+
+Crates in this repo currently have a Minimum Supported Rust Version (MSRV) of 1.65. As a policy, we permit MSRV increases in non-breaking releases.
 
 ## License
-This project is licensed under either of
 
-* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0))
-* MIT license ([LICENSE-MIT](LICENSE-MIT) or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT))
+The crates in repo are licensed under either of:
+
+- Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0))
+- MIT license ([LICENSE-MIT](LICENSE-MIT) or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT))
 
 at your option.
 

actix-codec/CHANGES.md

@@ -1,63 +1,85 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
+## Unreleased
 
+- Minimum supported Rust version (MSRV) is now 1.71.
 
-## 0.4.0 - 2021-04-20
-* No significant changes since v0.4.0-beta.1.
+## 0.5.2
 
+- Minimum supported Rust version (MSRV) is now 1.65.
 
-## 0.4.0-beta.1 - 2020-12-28
-* Replace `pin-project` with `pin-project-lite`. [#237]
-* Upgrade `tokio` dependency to `1`. [#237]
-* Upgrade `tokio-util` dependency to `0.6`. [#237]
-* Upgrade `bytes` dependency to `1`. [#237]
+## 0.5.1
 
-[#237]: https://github.com/actix/actix-net/pull/237
+- Logs emitted now use the `tracing` crate with `log` compatibility.
+- Minimum supported Rust version (MSRV) is now 1.49.
 
+## 0.5.0
 
-## 0.3.0 - 2020-08-23
-* No changes from beta 2.
+- Updated `tokio-util` dependency to `0.7.0`.
 
+## 0.4.2
 
-## 0.3.0-beta.2 - 2020-08-19
-* Remove unused type parameter from `Framed::replace_codec`.
+- No significant changes since `0.4.1`.
 
+## 0.4.1
 
-## 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()`.
-* 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.
+- Added `LinesCodec`.
+- `Framed::poll_ready` flushes when the buffer is full.
 
+## 0.4.0
 
-## 0.2.0 - 2019-12-10
-* Use specific futures dependencies.
+- No significant changes since v0.4.0-beta.1.
 
+## 0.4.0-beta.1
+
+- Replace `pin-project` with `pin-project-lite`.
+- Upgrade `tokio` dependency to `1`.
+- Upgrade `tokio-util` dependency to `0.6`.
+- Upgrade `bytes` dependency to `1`.
+
+## 0.3.0
+
+- No changes from beta 2.
+
+## 0.3.0-beta.2
+
+- Remove unused type parameter from `Framed::replace_codec`.
+
+## 0.3.0-beta.1
+
+- Use `.advance()` instead of `.split_to()`.
+- Upgrade `tokio-util` to `0.3`.
+- 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
+
+- 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
-* Added `Framed::map_io()` method.
+## 0.1.2
 
+- Added `Framed::map_io()` method.
 
-## 0.1.1 - 2019-03-06
-* Added `FramedParts::with_read_buffer()` method.
+## 0.1.1
 
+- Added `FramedParts::with_read_buffer()` method.
 
-## 0.1.0 - 2018-12-09
-* Move codec to separate crate.
+## 0.1.0
+
+- Move codec to separate crate.

actix-codec/Cargo.toml

@@ -1,24 +1,36 @@
 [package]
 name = "actix-codec"
-version = "0.4.0"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+version = "0.5.2"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>", "Rob Ede <robjtede@icloud.com>"]
 description = "Codec utilities for working with framed protocols"
 keywords = ["network", "framework", "async", "futures"]
 repository = "https://github.com/actix/actix-net"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition.workspace = true
+rust-version.workspace = true
 
-[lib]
-name = "actix_codec"
-path = "src/lib.rs"
+[package.metadata.cargo_check_external_types]
+allowed_external_types = ["bytes::*", "futures_core::*", "futures_sink::*", "tokio::*", "tokio_util::*"]
 
 [dependencies]
-bitflags = "1.2.1"
+bitflags = "2"
 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-util = { version = "0.6", features = ["codec", "io"] }
+tokio = "1.23.1"
+tokio-util = { version = "0.7", features = ["codec", "io"] }
+tracing = { version = "0.1.30", default-features = false, features = ["log"] }
+
+[dev-dependencies]
+criterion = { version = "0.5", features = ["html_reports"] }
+tokio-test = "0.4.2"
+
+[[bench]]
+name = "lines"
+harness = false
+
+[lints]
+workspace = true

actix-codec/benches/lines.rs

@@ -0,0 +1,59 @@
+#![allow(missing_docs)]
+
+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

@@ -1,10 +1,14 @@
-use std::pin::Pin;
-use std::task::{Context, Poll};
-use std::{fmt, io};
+use std::{
+    fmt, io,
+    pin::Pin,
+    task::{Context, Poll},
+};
 
+use bitflags::bitflags;
 use bytes::{Buf, BytesMut};
 use futures_core::{ready, Stream};
 use futures_sink::Sink;
+use pin_project_lite::pin_project;
 
 use crate::{AsyncRead, AsyncWrite, Decoder, Encoder};
 
@@ -13,22 +17,22 @@ const LW: usize = 1024;
 /// High-water mark
 const HW: usize = 8 * 1024;
 
-bitflags::bitflags! {
+bitflags! {
+    #[derive(Debug, Clone, Copy)]
     struct Flags: u8 {
         const EOF = 0b0001;
         const READABLE = 0b0010;
     }
 }
 
-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.
+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.
     ///
-    /// 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 +48,9 @@ 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 +73,18 @@ 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
     }
@@ -157,7 +157,7 @@ impl<T, U> Framed<T, U> {
 }
 
 impl<T, U> Framed<T, U> {
-    /// Serialize item and Write to the inner buffer
+    /// Serialize item and write to the inner buffer
     pub fn write<I>(mut self: Pin<&mut Self>, item: I) -> Result<(), <U as Encoder<I>>::Error>
     where
         T: AsyncWrite,
@@ -183,30 +183,29 @@ 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))),
+                        Err(err) => return Poll::Ready(Some(Err(err))),
                     }
                 }
 
-                log::trace!("attempting to decode a frame");
+                tracing::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");
+                        tracing::trace!("frame decoded from buffer");
                         return Poll::Ready(Some(Ok(frame)));
                     }
-                    Err(e) => return Poll::Ready(Some(Err(e))),
+                    Err(err) => return Poll::Ready(Some(Err(err))),
                     _ => (), // Need more data
                 }
 
@@ -215,7 +214,7 @@ 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)
@@ -223,7 +222,7 @@ impl<T, U> Framed<T, U> {
 
             let cnt = match tokio_util::io::poll_read_buf(this.io, cx, this.read_buf) {
                 Poll::Pending => return Poll::Pending,
-                Poll::Ready(Err(e)) => return Poll::Ready(Some(Err(e.into()))),
+                Poll::Ready(Err(err)) => return Poll::Ready(Some(Err(err.into()))),
                 Poll::Ready(Ok(cnt)) => cnt,
             };
 
@@ -235,19 +234,16 @@ impl<T, U> Framed<T, U> {
     }
 
     /// Flush write buffer to underlying I/O stream.
-    pub fn flush<I>(
-        mut self: Pin<&mut Self>,
-        cx: &mut Context<'_>,
-    ) -> Poll<Result<(), U::Error>>
+    pub fn flush<I>(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), U::Error>>
     where
         T: AsyncWrite,
         U: Encoder<I>,
     {
         let mut this = self.as_mut().project();
-        log::trace!("flushing framed transport");
+        tracing::trace!("flushing framed transport");
 
         while !this.write_buf.is_empty() {
-            log::trace!("writing; remaining={}", this.write_buf.len());
+            tracing::trace!("writing; remaining={}", this.write_buf.len());
 
             let n = ready!(this.io.as_mut().poll_write(cx, this.write_buf))?;
 
@@ -266,15 +262,12 @@ impl<T, U> Framed<T, U> {
         // Try flushing the underlying IO
         ready!(this.io.poll_flush(cx))?;
 
-        log::trace!("framed transport flushed");
+        tracing::trace!("framed transport flushed");
         Poll::Ready(Ok(()))
     }
 
     /// Flush write buffer and shutdown underlying I/O stream.
-    pub fn close<I>(
-        mut self: Pin<&mut Self>,
-        cx: &mut Context<'_>,
-    ) -> Poll<Result<(), U::Error>>
+    pub fn close<I>(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), U::Error>>
     where
         T: AsyncWrite,
         U: Encoder<I>,
@@ -306,11 +299,11 @@ 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 +334,12 @@ 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 +350,11 @@ 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 +367,15 @@ 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 +388,7 @@ 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 +399,7 @@ 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

@@ -1,23 +1,26 @@
 //! Codec utilities for working with framed protocols.
 //!
-//! Contains adapters to go from streams of bytes, [`AsyncRead`] and
-//! [`AsyncWrite`], to framed streams implementing [`Sink`] and [`Stream`].
-//! Framed streams are also known as `transports`.
+//! Contains adapters to go from streams of bytes, [`AsyncRead`] and [`AsyncWrite`], to framed
+//! streams implementing [`Sink`] and [`Stream`]. Framed streams are also known as `transports`.
 //!
 //! [`Sink`]: futures_sink::Sink
 //! [`Stream`]: futures_core::Stream
 
-#![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")]
 
+pub use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
+pub use tokio_util::{
+    codec::{Decoder, Encoder},
+    io::poll_read_buf,
+};
+
 mod bcodec;
 mod framed;
+mod lines;
 
-pub use self::bcodec::BytesCodec;
-pub use self::framed::{Framed, FramedParts};
-
-pub use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
-pub use tokio_util::codec::{Decoder, Encoder};
-pub use tokio_util::io::poll_read_buf;
+pub use self::{
+    bcodec::BytesCodec,
+    framed::{Framed, FramedParts},
+    lines::LinesCodec,
+};

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. 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 +1,224 @@
+#![allow(missing_docs)]
+
+use std::{
+    collections::VecDeque,
+    io::{self, Write},
+    pin::Pin,
+    task::{
+        Context,
+        Poll::{self, Pending, Ready},
+    },
+};
+
+use actix_codec::*;
+use bytes::{Buf as _, BufMut as _, BytesMut};
+use futures_sink::Sink;
+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(err)) => Err(err),
+            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 err) if err.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 err) if err.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 err)) if err.kind() == WouldBlock => Pending,
+            Some(Err(err)) => Ready(Err(err)),
+            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

@@ -1,33 +1,53 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
+## Unreleased
 
+- Minimum supported Rust version (MSRV) is now 1.71.
 
-## 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]
+## 0.2.4
+
+- Update `syn` dependency to `2`.
+- Minimum supported Rust version (MSRV) is now 1.65.
+
+## 0.2.3
+
+- Fix test macro in presence of other imports named "test". [#399]
+
+[#399]: https://github.com/actix/actix-net/pull/399
+
+## 0.2.2
+
+- 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
+
+- 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
 
-## 0.2.0 - 2021-02-02
-* Update to latest `actix_rt::System::new` signature. [#261]
+- Update to latest `actix_rt::System::new` signature. [#261]
 
 [#261]: https://github.com/actix/actix-net/pull/261
 
+## 0.2.0-beta.1
 
-## 0.2.0-beta.1 - 2021-01-09
-* Remove `actix-reexport` feature. [#218]
+- Remove `actix-reexport` feature. [#218]
 
 [#218]: https://github.com/actix/actix-net/pull/218
 
+## 0.1.3
 
-## 0.1.3 - 2020-12-03
-* Add `actix-reexport` feature. [#218]
+- Add `actix-reexport` feature. [#218]
 
 [#218]: https://github.com/actix/actix-net/pull/218
 
+## 0.1.2
 
-## 0.1.2 - 2020-05-18
-* Forward actix_rt::test arguments to test function [#127]
+- Forward actix_rt::test arguments to test function [#127]
 
 [#127]: https://github.com/actix/actix-net/pull/127

actix-macros/Cargo.toml

@@ -1,25 +1,39 @@
 [package]
 name = "actix-macros"
-version = "0.2.1"
+version = "0.2.4"
 authors = [
-    "Nikolay Kim <fafhrd91@gmail.com>",
-    "Ibraheem Ahmed <ibrah1440@gmail.com>",
+  "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"
 categories = ["network-programming", "asynchronous"]
-license = "MIT OR Apache-2.0"
-edition = "2018"
+license.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+
+[package.metadata.cargo-machete]
+ignored = [
+  "proc_macro2", # specified for minimal versions compat
+]
 
 [lib]
 proc-macro = true
 
 [dependencies]
-quote = "1.0.3"
-syn = { version = "^1", features = ["full"] }
+quote = "1"
+syn = { version = "2", features = ["full"] }
+
+# minimal versions compat
+[target.'cfg(any())'.dependencies]
+proc-macro2 = "1.0.60"
 
 [dev-dependencies]
-actix-rt = "2.0.0"
-
-futures-util = { version = "0.3.7", default-features = false }
+actix-rt = "2"
+futures-util = { version = "0.3.17", default-features = false }
+rustversion-msrv = "0.100"
 trybuild = "1"
+
+[lints]
+workspace = true

actix-macros/src/lib.rs

@@ -8,12 +8,14 @@
 //! # Tests
 //! See docs for the [`#[test]`](macro@test) macro.
 
-#![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")]
 
 use proc_macro::TokenStream;
 use quote::quote;
+use syn::parse::Parser as _;
+
+type AttributeArgs = syn::punctuated::Punctuated<syn::Meta, syn::Token![,]>;
 
 /// Marks async entry-point function to be executed by Actix system.
 ///
@@ -24,12 +26,19 @@ use quote::quote;
 ///     println!("Hello world");
 /// }
 /// ```
-#[allow(clippy::needless_doctest_main)]
 #[proc_macro_attribute]
-#[cfg(not(test))] // Work around for rust-lang/rust#62127
 pub fn main(args: TokenStream, item: TokenStream) -> TokenStream {
-    let mut input = syn::parse_macro_input!(item as syn::ItemFn);
-    let args = syn::parse_macro_input!(args as syn::AttributeArgs);
+    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 parser = AttributeArgs::parse_terminated;
+    let args = match parser.parse(args.clone()) {
+        Ok(args) => args,
+        Err(err) => return input_and_compile_error(args, err),
+    };
 
     let attrs = &input.attrs;
     let vis = &input.vis;
@@ -49,11 +58,15 @@ pub fn main(args: TokenStream, item: TokenStream) -> TokenStream {
 
     for arg in &args {
         match arg {
-            syn::NestedMeta::Meta(syn::Meta::NameValue(syn::MetaNameValue {
-                lit: syn::Lit::Str(lit),
+            syn::Meta::NameValue(syn::MetaNameValue {
                 path,
+                value:
+                    syn::Expr::Lit(syn::ExprLit {
+                        lit: syn::Lit::Str(lit),
+                        ..
+                    }),
                 ..
-            })) => match path
+            }) => match path
                 .get_ident()
                 .map(|i| i.to_string().to_lowercase())
                 .as_deref()
@@ -72,6 +85,7 @@ pub fn main(args: TokenStream, item: TokenStream) -> TokenStream {
                         .into();
                 }
             },
+
             _ => {
                 return syn::Error::new_spanned(arg, "Unknown attribute specified")
                     .to_compile_error()
@@ -101,8 +115,19 @@ pub fn main(args: 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 parser = AttributeArgs::parse_terminated;
+    let args = match parser.parse(args.clone()) {
+        Ok(args) => args,
+        Err(err) => return input_and_compile_error(args, err),
+    };
+
     let attrs = &input.attrs;
     let vis = &input.vis;
     let sig = &mut input.sig;
@@ -110,7 +135,7 @@ pub fn test(_: TokenStream, item: TokenStream) -> TokenStream {
     let mut has_test_attr = false;
 
     for attr in attrs {
-        if attr.path.is_ident("test") {
+        if attr.path().is_ident("test") {
             has_test_attr = true;
         }
     }
@@ -127,18 +152,68 @@ 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::Meta::NameValue(syn::MetaNameValue {
+                path,
+                value:
+                    syn::Expr::Lit(syn::ExprLit {
+                        lit: syn::Lit::Str(lit),
+                        ..
+                    }),
+                ..
+            }) => 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

@@ -1,6 +1,10 @@
+#![allow(missing_docs)]
+
+#[rustversion_msrv::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");
@@ -11,4 +15,7 @@ fn compile_macros() {
     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-02-only-async.stderr

@@ -1,14 +1,11 @@
 error: the async keyword is missing from the function declaration
- --> $DIR/main-02-only-async.rs:2:1
+ --> tests/trybuild/main-02-only-async.rs:2:1
   |
 2 | fn main() {
   | ^^
 
 error[E0601]: `main` function not found in crate `$CRATE`
- --> $DIR/main-02-only-async.rs:1:1
+ --> tests/trybuild/main-02-only-async.rs:4:2
   |
-1 | / #[actix_rt::main]
-2 | | fn main() {
-3 | |     futures_util::future::ready(()).await
-4 | | }
-  | |_^ consider adding a `main` function to `$DIR/tests/trybuild/main-02-only-async.rs`
+4 | }
+  |  ^ consider adding a `main` function to `$DIR/tests/trybuild/main-02-only-async.rs`

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

@@ -1,111 +0,0 @@
-# Changes
-
-## Unreleased - 2021-xx-xx
-
-
-## 0.5.0-beta.1 - 2021-07-20
-* Fix a bug in multi-patterns where static patterns are interpreted as regex. [#366]
-* Introduce `ResourceDef::pattern_iter` to get an iterator over all patterns in a multi-pattern resource. [#373]
-* Fix segment interpolation leaving `Path` in unintended state after matching. [#368]
-* Fix `ResourceDef` `PartialEq` implementation. [#373]
-* Re-work `IntoPatterns` trait, adding a `Patterns` enum. [#372]
-* Implement `IntoPatterns` for `bytestring::ByteString`. [#372]
-* Rename `Path::{len => segment_count}` to be more descriptive of it's purpose. [#370]
-* Rename `ResourceDef::{resource_path => resource_path_from_iter}`. [#371]
-* `ResourceDef::resource_path_from_iter` now takes an `IntoIterator`. [#373]
-* Rename `ResourceDef::{resource_path_named => resource_path_from_map}`. [#371]
-* Rename `ResourceDef::{is_prefix_match => find_match}`. [#373]
-* Rename `ResourceDef::{match_path => capture_match_info}`. [#373]
-* Rename `ResourceDef::{match_path_checked => capture_match_info_fn}`. [#373]
-* Remove `ResourceDef::name_mut` and introduce `ResourceDef::set_name`. [#373]
-* Rename `Router::{*_checked => *_fn}`. [#373]
-* Return type of `ResourceDef::name` is now `Option<&str>`. [#373]
-* Return type of `ResourceDef::pattern` is now `Option<&str>`. [#373]
-
-[#368]: https://github.com/actix/actix-net/pull/368
-[#366]: https://github.com/actix/actix-net/pull/366
-[#368]: https://github.com/actix/actix-net/pull/368
-[#370]: https://github.com/actix/actix-net/pull/370
-[#371]: https://github.com/actix/actix-net/pull/371
-[#372]: https://github.com/actix/actix-net/pull/372
-[#373]: https://github.com/actix/actix-net/pull/373
-
-
-## 0.4.0 - 2021-06-06
-* When matching path parameters, `%25` is now kept in the percent-encoded form; no longer decoded to `%`. [#357]
-* Path tail patterns now match new lines (`\n`) in request URL. [#360]
-* Fixed a safety bug where `Path` could return a malformed string after percent decoding. [#359]
-* Methods `Path::{add, add_static}` now take `impl Into<Cow<'static, str>>`. [#345]
-
-[#345]: https://github.com/actix/actix-net/pull/345
-[#357]: https://github.com/actix/actix-net/pull/357
-[#359]: https://github.com/actix/actix-net/pull/359
-[#360]: https://github.com/actix/actix-net/pull/360
-
-
-## 0.3.0 - 2019-12-31
-* Version was yanked previously. See https://crates.io/crates/actix-router/0.3.0
-
-
-## 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

@@ -1,38 +0,0 @@
-[package]
-name = "actix-router"
-version = "0.5.0-beta.1"
-authors = [
-    "Nikolay Kim <fafhrd91@gmail.com>",
-    "Ali MJ Al-Nasrawy <alimjalnasrawy@gmail.com>",
-    "Rob Ede <robjtede@icloud.com>",
-]
-description = "Resource path matching and router"
-keywords = ["actix", "router", "routing"]
-repository = "https://github.com/actix/actix-net.git"
-license = "MIT OR Apache-2.0"
-edition = "2018"
-
-[lib]
-name = "actix_router"
-path = "src/lib.rs"
-
-[features]
-default = ["http"]
-
-[dependencies]
-bytestring = ">=0.1.5, <2"
-firestorm = "0.4"
-http = { version = "0.2.3", optional = true }
-log = "0.4"
-regex = "1.5"
-serde = "1"
-
-[dev-dependencies]
-criterion = { version = "0.3", features = ["html_reports"] }
-firestorm = { version = "0.4", features = ["enable_system_time"] }
-http = "0.2.3"
-serde = { version = "1", features = ["derive"] }
-
-[[bench]]
-name = "router"
-harness = false

actix-router/benches/router.rs

@@ -1,194 +0,0 @@
-//! Based on https://github.com/ibraheemdev/matchit/blob/master/benches/bench.rs
-
-use criterion::{black_box, criterion_group, criterion_main, Criterion};
-
-macro_rules! register {
-    (colon) => {{
-        register!(finish => ":p1", ":p2", ":p3", ":p4")
-    }};
-    (brackets) => {{
-        register!(finish => "{p1}", "{p2}", "{p3}", "{p4}")
-    }};
-    (regex) => {{
-        register!(finish => "(.*)", "(.*)", "(.*)", "(.*)")
-    }};
-    (finish => $p1:literal, $p2:literal, $p3:literal, $p4:literal) => {{
-        let arr = [
-            concat!("/authorizations"),
-            concat!("/authorizations/", $p1),
-            concat!("/applications/", $p1, "/tokens/", $p2),
-            concat!("/events"),
-            concat!("/repos/", $p1, "/", $p2, "/events"),
-            concat!("/networks/", $p1, "/", $p2, "/events"),
-            concat!("/orgs/", $p1, "/events"),
-            concat!("/users/", $p1, "/received_events"),
-            concat!("/users/", $p1, "/received_events/public"),
-            concat!("/users/", $p1, "/events"),
-            concat!("/users/", $p1, "/events/public"),
-            concat!("/users/", $p1, "/events/orgs/", $p2),
-            concat!("/feeds"),
-            concat!("/notifications"),
-            concat!("/repos/", $p1, "/", $p2, "/notifications"),
-            concat!("/notifications/threads/", $p1),
-            concat!("/notifications/threads/", $p1, "/subscription"),
-            concat!("/repos/", $p1, "/", $p2, "/stargazers"),
-            concat!("/users/", $p1, "/starred"),
-            concat!("/user/starred"),
-            concat!("/user/starred/", $p1, "/", $p2),
-            concat!("/repos/", $p1, "/", $p2, "/subscribers"),
-            concat!("/users/", $p1, "/subscriptions"),
-            concat!("/user/subscriptions"),
-            concat!("/repos/", $p1, "/", $p2, "/subscription"),
-            concat!("/user/subscriptions/", $p1, "/", $p2),
-            concat!("/users/", $p1, "/gists"),
-            concat!("/gists"),
-            concat!("/gists/", $p1),
-            concat!("/gists/", $p1, "/star"),
-            concat!("/repos/", $p1, "/", $p2, "/git/blobs/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/commits/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/refs"),
-            concat!("/repos/", $p1, "/", $p2, "/git/tags/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/trees/", $p3),
-            concat!("/issues"),
-            concat!("/user/issues"),
-            concat!("/orgs/", $p1, "/issues"),
-            concat!("/repos/", $p1, "/", $p2, "/issues"),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/assignees"),
-            concat!("/repos/", $p1, "/", $p2, "/assignees/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/events"),
-            concat!("/repos/", $p1, "/", $p2, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/labels/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/", $p3, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/", $p3),
-            concat!("/emojis"),
-            concat!("/gitignore/templates"),
-            concat!("/gitignore/templates/", $p1),
-            concat!("/meta"),
-            concat!("/rate_limit"),
-            concat!("/users/", $p1, "/orgs"),
-            concat!("/user/orgs"),
-            concat!("/orgs/", $p1),
-            concat!("/orgs/", $p1, "/members"),
-            concat!("/orgs/", $p1, "/members", $p2),
-            concat!("/orgs/", $p1, "/public_members"),
-            concat!("/orgs/", $p1, "/public_members/", $p2),
-            concat!("/orgs/", $p1, "/teams"),
-            concat!("/teams/", $p1),
-            concat!("/teams/", $p1, "/members"),
-            concat!("/teams/", $p1, "/members", $p2),
-            concat!("/teams/", $p1, "/repos"),
-            concat!("/teams/", $p1, "/repos/", $p2, "/", $p3),
-            concat!("/user/teams"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/commits"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/files"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/merge"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/comments"),
-            concat!("/user/repos"),
-            concat!("/users/", $p1, "/repos"),
-            concat!("/orgs/", $p1, "/repos"),
-            concat!("/repositories"),
-            concat!("/repos/", $p1, "/", $p2),
-            concat!("/repos/", $p1, "/", $p2, "/contributors"),
-            concat!("/repos/", $p1, "/", $p2, "/languages"),
-            concat!("/repos/", $p1, "/", $p2, "/teams"),
-            concat!("/repos/", $p1, "/", $p2, "/tags"),
-            concat!("/repos/", $p1, "/", $p2, "/branches"),
-            concat!("/repos/", $p1, "/", $p2, "/branches/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/collaborators"),
-            concat!("/repos/", $p1, "/", $p2, "/collaborators/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/commits/", $p3, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/commits"),
-            concat!("/repos/", $p1, "/", $p2, "/commits/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/readme"),
-            concat!("/repos/", $p1, "/", $p2, "/keys"),
-            concat!("/repos/", $p1, "/", $p2, "/keys", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/downloads"),
-            concat!("/repos/", $p1, "/", $p2, "/downloads", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/forks"),
-            concat!("/repos/", $p1, "/", $p2, "/hooks"),
-            concat!("/repos/", $p1, "/", $p2, "/hooks", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/releases"),
-            concat!("/repos/", $p1, "/", $p2, "/releases/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/releases/", $p3, "/assets"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/contributors"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/commit_activity"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/code_frequency"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/participation"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/punch_card"),
-            concat!("/repos/", $p1, "/", $p2, "/statuses/", $p3),
-            concat!("/search/repositories"),
-            concat!("/search/code"),
-            concat!("/search/issues"),
-            concat!("/search/users"),
-            concat!("/legacy/issues/search/", $p1, "/", $p2, "/", $p3, "/", $p4),
-            concat!("/legacy/repos/search/", $p1),
-            concat!("/legacy/user/search/", $p1),
-            concat!("/legacy/user/email/", $p1),
-            concat!("/users/", $p1),
-            concat!("/user"),
-            concat!("/users"),
-            concat!("/user/emails"),
-            concat!("/users/", $p1, "/followers"),
-            concat!("/user/followers"),
-            concat!("/users/", $p1, "/following"),
-            concat!("/user/following"),
-            concat!("/user/following/", $p1),
-            concat!("/users/", $p1, "/following", $p2),
-            concat!("/users/", $p1, "/keys"),
-            concat!("/user/keys"),
-            concat!("/user/keys/", $p1),
-        ];
-        std::array::IntoIter::new(arr)
-    }};
-}
-
-fn call() -> impl Iterator<Item = &'static str> {
-    let arr = [
-        "/authorizations",
-        "/user/repos",
-        "/repos/rust-lang/rust/stargazers",
-        "/orgs/rust-lang/public_members/nikomatsakis",
-        "/repos/rust-lang/rust/releases/1.51.0",
-    ];
-
-    std::array::IntoIter::new(arr)
-}
-
-fn compare_routers(c: &mut Criterion) {
-    let mut group = c.benchmark_group("Compare Routers");
-
-    let mut actix = actix_router::Router::<bool>::build();
-    for route in register!(brackets) {
-        actix.path(route, true);
-    }
-    let actix = actix.finish();
-    group.bench_function("actix", |b| {
-        b.iter(|| {
-            for route in call() {
-                let mut path = actix_router::Path::new(route);
-                black_box(actix.recognize(&mut path).unwrap());
-            }
-        });
-    });
-
-    let regex_set = regex::RegexSet::new(register!(regex)).unwrap();
-    group.bench_function("regex", |b| {
-        b.iter(|| {
-            for route in call() {
-                black_box(regex_set.matches(route));
-            }
-        });
-    });
-
-    group.finish();
-}
-
-criterion_group!(benches, compare_routers);
-criterion_main!(benches);

actix-router/examples/flamegraph.rs

@@ -1,169 +0,0 @@
-macro_rules! register {
-    (brackets) => {{
-        register!(finish => "{p1}", "{p2}", "{p3}", "{p4}")
-    }};
-    (finish => $p1:literal, $p2:literal, $p3:literal, $p4:literal) => {{
-        let arr = [
-            concat!("/authorizations"),
-            concat!("/authorizations/", $p1),
-            concat!("/applications/", $p1, "/tokens/", $p2),
-            concat!("/events"),
-            concat!("/repos/", $p1, "/", $p2, "/events"),
-            concat!("/networks/", $p1, "/", $p2, "/events"),
-            concat!("/orgs/", $p1, "/events"),
-            concat!("/users/", $p1, "/received_events"),
-            concat!("/users/", $p1, "/received_events/public"),
-            concat!("/users/", $p1, "/events"),
-            concat!("/users/", $p1, "/events/public"),
-            concat!("/users/", $p1, "/events/orgs/", $p2),
-            concat!("/feeds"),
-            concat!("/notifications"),
-            concat!("/repos/", $p1, "/", $p2, "/notifications"),
-            concat!("/notifications/threads/", $p1),
-            concat!("/notifications/threads/", $p1, "/subscription"),
-            concat!("/repos/", $p1, "/", $p2, "/stargazers"),
-            concat!("/users/", $p1, "/starred"),
-            concat!("/user/starred"),
-            concat!("/user/starred/", $p1, "/", $p2),
-            concat!("/repos/", $p1, "/", $p2, "/subscribers"),
-            concat!("/users/", $p1, "/subscriptions"),
-            concat!("/user/subscriptions"),
-            concat!("/repos/", $p1, "/", $p2, "/subscription"),
-            concat!("/user/subscriptions/", $p1, "/", $p2),
-            concat!("/users/", $p1, "/gists"),
-            concat!("/gists"),
-            concat!("/gists/", $p1),
-            concat!("/gists/", $p1, "/star"),
-            concat!("/repos/", $p1, "/", $p2, "/git/blobs/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/commits/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/refs"),
-            concat!("/repos/", $p1, "/", $p2, "/git/tags/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/git/trees/", $p3),
-            concat!("/issues"),
-            concat!("/user/issues"),
-            concat!("/orgs/", $p1, "/issues"),
-            concat!("/repos/", $p1, "/", $p2, "/issues"),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/assignees"),
-            concat!("/repos/", $p1, "/", $p2, "/assignees/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/events"),
-            concat!("/repos/", $p1, "/", $p2, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/labels/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/issues/", $p3, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/", $p3, "/labels"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/"),
-            concat!("/repos/", $p1, "/", $p2, "/milestones/", $p3),
-            concat!("/emojis"),
-            concat!("/gitignore/templates"),
-            concat!("/gitignore/templates/", $p1),
-            concat!("/meta"),
-            concat!("/rate_limit"),
-            concat!("/users/", $p1, "/orgs"),
-            concat!("/user/orgs"),
-            concat!("/orgs/", $p1),
-            concat!("/orgs/", $p1, "/members"),
-            concat!("/orgs/", $p1, "/members", $p2),
-            concat!("/orgs/", $p1, "/public_members"),
-            concat!("/orgs/", $p1, "/public_members/", $p2),
-            concat!("/orgs/", $p1, "/teams"),
-            concat!("/teams/", $p1),
-            concat!("/teams/", $p1, "/members"),
-            concat!("/teams/", $p1, "/members", $p2),
-            concat!("/teams/", $p1, "/repos"),
-            concat!("/teams/", $p1, "/repos/", $p2, "/", $p3),
-            concat!("/user/teams"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/commits"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/files"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/merge"),
-            concat!("/repos/", $p1, "/", $p2, "/pulls/", $p3, "/comments"),
-            concat!("/user/repos"),
-            concat!("/users/", $p1, "/repos"),
-            concat!("/orgs/", $p1, "/repos"),
-            concat!("/repositories"),
-            concat!("/repos/", $p1, "/", $p2),
-            concat!("/repos/", $p1, "/", $p2, "/contributors"),
-            concat!("/repos/", $p1, "/", $p2, "/languages"),
-            concat!("/repos/", $p1, "/", $p2, "/teams"),
-            concat!("/repos/", $p1, "/", $p2, "/tags"),
-            concat!("/repos/", $p1, "/", $p2, "/branches"),
-            concat!("/repos/", $p1, "/", $p2, "/branches/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/collaborators"),
-            concat!("/repos/", $p1, "/", $p2, "/collaborators/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/commits/", $p3, "/comments"),
-            concat!("/repos/", $p1, "/", $p2, "/commits"),
-            concat!("/repos/", $p1, "/", $p2, "/commits/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/readme"),
-            concat!("/repos/", $p1, "/", $p2, "/keys"),
-            concat!("/repos/", $p1, "/", $p2, "/keys", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/downloads"),
-            concat!("/repos/", $p1, "/", $p2, "/downloads", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/forks"),
-            concat!("/repos/", $p1, "/", $p2, "/hooks"),
-            concat!("/repos/", $p1, "/", $p2, "/hooks", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/releases"),
-            concat!("/repos/", $p1, "/", $p2, "/releases/", $p3),
-            concat!("/repos/", $p1, "/", $p2, "/releases/", $p3, "/assets"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/contributors"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/commit_activity"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/code_frequency"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/participation"),
-            concat!("/repos/", $p1, "/", $p2, "/stats/punch_card"),
-            concat!("/repos/", $p1, "/", $p2, "/statuses/", $p3),
-            concat!("/search/repositories"),
-            concat!("/search/code"),
-            concat!("/search/issues"),
-            concat!("/search/users"),
-            concat!("/legacy/issues/search/", $p1, "/", $p2, "/", $p3, "/", $p4),
-            concat!("/legacy/repos/search/", $p1),
-            concat!("/legacy/user/search/", $p1),
-            concat!("/legacy/user/email/", $p1),
-            concat!("/users/", $p1),
-            concat!("/user"),
-            concat!("/users"),
-            concat!("/user/emails"),
-            concat!("/users/", $p1, "/followers"),
-            concat!("/user/followers"),
-            concat!("/users/", $p1, "/following"),
-            concat!("/user/following"),
-            concat!("/user/following/", $p1),
-            concat!("/users/", $p1, "/following", $p2),
-            concat!("/users/", $p1, "/keys"),
-            concat!("/user/keys"),
-            concat!("/user/keys/", $p1),
-        ];
-
-        arr.to_vec()
-    }};
-}
-
-static PATHS: [&str; 5] = [
-    "/authorizations",
-    "/user/repos",
-    "/repos/rust-lang/rust/stargazers",
-    "/orgs/rust-lang/public_members/nikomatsakis",
-    "/repos/rust-lang/rust/releases/1.51.0",
-];
-
-fn main() {
-    let mut router = actix_router::Router::<bool>::build();
-
-    for route in register!(brackets) {
-        router.path(route, true);
-    }
-
-    let actix = router.finish();
-
-    if firestorm::enabled() {
-        firestorm::bench("target", || {
-            for &route in &PATHS {
-                let mut path = actix_router::Path::new(route);
-                actix.recognize(&mut path).unwrap();
-            }
-        })
-        .unwrap();
-    }
-}

actix-router/src/de.rs

@@ -1,723 +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.segment_count() != 1 {
-                Err(de::value::Error::custom(
-                    format!(
-                        "wrong number of parameters: {} expected 1",
-                        self.path.segment_count()
-                    )
-                    .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.segment_count() < len {
-            Err(de::value::Error::custom(
-                format!(
-                    "wrong number of parameters: {} expected {}",
-                    self.path.segment_count(),
-                    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.segment_count() < len {
-            Err(de::value::Error::custom(
-                format!(
-                    "wrong number of parameters: {} expected {}",
-                    self.path.segment_count(),
-                    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.segment_count() != 1 {
-            Err(de::value::Error::custom(
-                format!(
-                    "wrong number of parameters: {} expected 1",
-                    self.path.segment_count()
-                )
-                .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, 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

@@ -1,149 +0,0 @@
-//! Resource path matching and router.
-
-#![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};
-
-// TODO: this trait is necessary, document it
-// see impl Resource for ServiceRequest
-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
-    }
-}
-
-/// One or many patterns.
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub enum Patterns {
-    Single(String),
-    List(Vec<String>),
-}
-
-impl Patterns {
-    pub fn is_empty(&self) -> bool {
-        match self {
-            Patterns::Single(_) => false,
-            Patterns::List(pats) => pats.is_empty(),
-        }
-    }
-}
-
-/// Helper trait for type that could be converted to one or more path pattern.
-pub trait IntoPatterns {
-    fn patterns(&self) -> Patterns;
-}
-
-impl IntoPatterns for String {
-    fn patterns(&self) -> Patterns {
-        Patterns::Single(self.clone())
-    }
-}
-
-impl<'a> IntoPatterns for &'a String {
-    fn patterns(&self) -> Patterns {
-        Patterns::Single((*self).clone())
-    }
-}
-
-impl<'a> IntoPatterns for &'a str {
-    fn patterns(&self) -> Patterns {
-        Patterns::Single((*self).to_owned())
-    }
-}
-
-impl IntoPatterns for bytestring::ByteString {
-    fn patterns(&self) -> Patterns {
-        Patterns::Single(self.to_string())
-    }
-}
-
-impl IntoPatterns for Patterns {
-    fn patterns(&self) -> Patterns {
-        self.clone()
-    }
-}
-
-impl<T: AsRef<str>> IntoPatterns for Vec<T> {
-    fn patterns(&self) -> Patterns {
-        let mut patterns = self.iter().map(|v| v.as_ref().to_owned());
-
-        match patterns.size_hint() {
-            (1, _) => Patterns::Single(patterns.next().unwrap()),
-            _ => Patterns::List(patterns.collect()),
-        }
-    }
-}
-
-macro_rules! array_patterns_single (($tp:ty) => {
-    impl IntoPatterns for [$tp; 1] {
-        fn patterns(&self) -> Patterns {
-            Patterns::Single(self[0].to_owned())
-        }
-    }
-});
-
-macro_rules! array_patterns_multiple (($tp:ty, $str_fn:expr, $($num:tt) +) => {
-    // for each array length specified in $num
-    $(
-        impl IntoPatterns for [$tp; $num] {
-            fn patterns(&self) -> Patterns {
-                Patterns::List(self.iter().map($str_fn).collect())
-            }
-        }
-    )+
-});
-
-array_patterns_single!(&str);
-array_patterns_multiple!(&str, |&v| v.to_owned(), 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16);
-
-array_patterns_single!(String);
-array_patterns_multiple!(String, |v| v.clone(), 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16);
-
-#[cfg(feature = "http")]
-mod url;
-
-#[cfg(feature = "http")]
-pub use self::url::{Quoter, Url};
-
-#[cfg(feature = "http")]
-mod http_impls {
-    use http::Uri;
-
-    use super::ResourcePath;
-
-    impl ResourcePath for Uri {
-        fn path(&self) -> &str {
-            self.path()
-        }
-    }
-}

actix-router/src/path.rs

@@ -1,220 +0,0 @@
-use std::borrow::Cow;
-use std::ops::Index;
-
-use firestorm::profile_method;
-use serde::de;
-
-use crate::{de::PathDeserializer, Resource, ResourcePath};
-
-#[derive(Debug, Clone)]
-pub(crate) enum PathItem {
-    Static(Cow<'static, str>),
-    Segment(u16, u16),
-}
-
-impl Default for PathItem {
-    fn default() -> Self {
-        Self::Static(Cow::Borrowed(""))
-    }
-}
-
-/// Resource path match information.
-///
-/// If resource path contains variable patterns, `Path` stores them.
-#[derive(Debug, Clone, Default)]
-pub struct Path<T> {
-    path: T,
-    pub(crate) skip: u16,
-    pub(crate) segments: Vec<(Cow<'static, str>, PathItem)>,
-}
-
-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 {
-        profile_method!(path);
-
-        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: impl Into<Cow<'static, str>>, value: PathItem) {
-        profile_method!(add);
-
-        match value {
-            PathItem::Static(s) => self.segments.push((name.into(), PathItem::Static(s))),
-            PathItem::Segment(begin, end) => self.segments.push((
-                name.into(),
-                PathItem::Segment(self.skip + begin, self.skip + end),
-            )),
-        }
-    }
-
-    #[doc(hidden)]
-    pub fn add_static(
-        &mut self,
-        name: impl Into<Cow<'static, str>>,
-        value: impl Into<Cow<'static, str>>,
-    ) {
-        self.segments
-            .push((name.into(), PathItem::Static(value.into())));
-    }
-
-    /// Check if there are any matched patterns.
-    #[inline]
-    pub fn is_empty(&self) -> bool {
-        self.segments.is_empty()
-    }
-
-    /// Returns number of interpolated segments.
-    #[inline]
-    pub fn segment_count(&self) -> usize {
-        self.segments.len()
-    }
-
-    /// Get matched parameter by name without type conversion
-    pub fn get(&self, name: &str) -> Option<&str> {
-        profile_method!(get);
-
-        for (seg_name, val) in self.segments.iter() {
-            if name == seg_name {
-                return match val {
-                    PathItem::Static(ref s) => Some(&s),
-                    PathItem::Segment(s, e) => {
-                        Some(&self.path.path()[(*s as usize)..(*e as usize)])
-                    }
-                };
-            }
-        }
-
-        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 {
-        profile_method!(query);
-
-        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> {
-        profile_method!(load);
-        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.segment_count() {
-            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/router.rs

@@ -1,281 +0,0 @@
-use firestorm::profile_method;
-
-use crate::{IntoPatterns, 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.
-// T is the resource itself
-// U is any other data needed for routing like method guards
-pub struct Router<T, U = ()> {
-    routes: 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,
-    {
-        profile_method!(recognize);
-
-        for item in self.routes.iter() {
-            if item.0.capture_match_info(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,
-    {
-        profile_method!(recognize_mut);
-
-        for item in self.routes.iter_mut() {
-            if item.0.capture_match_info(resource.resource_path()) {
-                return Some((&mut item.1, ResourceId(item.0.id())));
-            }
-        }
-
-        None
-    }
-
-    pub fn recognize_fn<R, P, F>(&self, resource: &mut R, check: F) -> Option<(&T, ResourceId)>
-    where
-        F: Fn(&R, &Option<U>) -> bool,
-        R: Resource<P>,
-        P: ResourcePath,
-    {
-        profile_method!(recognize_checked);
-
-        for item in self.routes.iter() {
-            if item.0.capture_match_info_fn(resource, &check, &item.2) {
-                return Some((&item.1, ResourceId(item.0.id())));
-            }
-        }
-
-        None
-    }
-
-    pub fn recognize_mut_fn<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,
-    {
-        profile_method!(recognize_mut_checked);
-
-        for item in self.routes.iter_mut() {
-            if item.0.capture_match_info_fn(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: IntoPatterns>(
-        &mut self,
-        path: P,
-        resource: T,
-    ) -> &mut (ResourceDef, T, Option<U>) {
-        profile_method!(path);
-
-        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>) {
-        profile_method!(prefix);
-
-        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>) {
-        profile_method!(rdef);
-
-        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 {
-            routes: 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

@@ -1,288 +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| String::from_utf8_lossy(&data).into_owned())
-    }
-}
-
-#[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};
-
-    const PROTECTED: &[u8] = b"%/+";
-
-    fn match_url(pattern: &'static str, url: impl AsRef<str>) -> Path<Url> {
-        let re = ResourceDef::new(pattern);
-        let uri = Uri::try_from(url.as_ref()).unwrap();
-        let mut path = Path::new(Url::new(uri));
-        assert!(re.capture_match_info(&mut path));
-        path
-    }
-
-    fn percent_encode(data: &[u8]) -> String {
-        data.iter().map(|c| format!("%{:02X}", c)).collect()
-    }
-
-    #[test]
-    fn test_parse_url() {
-        let re = "/user/{id}/test";
-
-        let path = match_url(re, "/user/2345/test");
-        assert_eq!(path.get("id").unwrap(), "2345");
-
-        // "%25" should never be decoded into '%' to guarantee the output is a valid
-        // percent-encoded format
-        let path = match_url(re, "/user/qwe%25/test");
-        assert_eq!(path.get("id").unwrap(), "qwe%25");
-
-        let path = match_url(re, "/user/qwe%25rty/test");
-        assert_eq!(path.get("id").unwrap(), "qwe%25rty");
-    }
-
-    #[test]
-    fn test_protected_chars() {
-        let encoded = percent_encode(PROTECTED);
-        let path = match_url("/user/{id}/test", format!("/user/{}/test", encoded));
-        assert_eq!(path.get("id").unwrap(), &encoded);
-    }
-
-    #[test]
-    fn test_non_protecteed_ascii() {
-        let nonprotected_ascii = ('\u{0}'..='\u{7F}')
-            .filter(|&c| c.is_ascii() && !PROTECTED.contains(&(c as u8)))
-            .collect::<String>();
-        let encoded = percent_encode(nonprotected_ascii.as_bytes());
-        let path = match_url("/user/{id}/test", format!("/user/{}/test", encoded));
-        assert_eq!(path.get("id").unwrap(), &nonprotected_ascii);
-    }
-
-    #[test]
-    fn test_valid_utf8_multibyte() {
-        let test = ('\u{FF00}'..='\u{FFFF}').collect::<String>();
-        let encoded = percent_encode(test.as_bytes());
-        let path = match_url("/a/{id}/b", format!("/a/{}/b", &encoded));
-        assert_eq!(path.get("id").unwrap(), &test);
-    }
-
-    #[test]
-    fn test_invalid_utf8() {
-        let invalid_utf8 = percent_encode((0x80..=0xff).collect::<Vec<_>>().as_slice());
-        let uri = Uri::try_from(format!("/{}", invalid_utf8)).unwrap();
-        let path = Path::new(Url::new(uri));
-
-        // We should always get a valid utf8 string
-        assert!(String::from_utf8(path.path().as_bytes().to_owned()).is_ok());
-    }
-
-    #[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

@@ -1,158 +1,174 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
+## Unreleased
 
+- Minimum supported Rust version (MSRV) is now 1.71.
 
-## 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.
+## 2.10.0
 
-[#293]: https://github.com/actix/actix-net/pull/293
+- Relax `F`'s bound (`Fn => FnOnce`) on `{Arbiter, System}::with_tokio_rt()` functions.
+- Update `tokio-uring` dependency to `0.5`.
+- Minimum supported Rust version (MSRV) is now 1.70.
 
+## 2.9.0
 
-## 2.1.0 - 2021-02-24
-* Add `ActixStream` extension trait to include readiness methods. [#276]
-* Re-export `tokio::net::TcpSocket` in `net` module [#282]
+- Add `actix_rt::System::runtime()` method to retrieve the underlying `actix_rt::Runtime` runtime.
+- Add `actix_rt::Runtime::tokio_runtime()` method to retrieve the underlying Tokio runtime.
+- Minimum supported Rust version (MSRV) is now 1.65.
 
-[#276]: https://github.com/actix/actix-net/pull/276
-[#282]: https://github.com/actix/actix-net/pull/282
+## 2.8.0
 
+- Add `#[track_caller]` attribute to `spawn` functions and methods.
+- Update `tokio-uring` dependency to `0.4`.
+- Minimum supported Rust version (MSRV) is now 1.59.
 
-## 2.0.2 - 2021-02-06
-* Add `Arbiter::handle` to get a handle of an owned Arbiter. [#274]
-* Add `System::try_current` for situations where actix may or may not be running a System. [#275]
+## 2.7.0
 
-[#274]: https://github.com/actix/actix-net/pull/274
-[#275]: https://github.com/actix/actix-net/pull/275
+- Update `tokio-uring` dependency to `0.3`.
+- Minimum supported Rust version (MSRV) is now 1.49.
 
+## 2.6.0
 
-## 2.0.1 - 2021-02-06
-* Expose `JoinError` from Tokio. [#271]
+- Update `tokio-uring` dependency to `0.2`.
 
-[#271]: https://github.com/actix/actix-net/pull/271
+## 2.5.1
 
+- Expose `System::with_tokio_rt` and `Arbiter::with_tokio_rt`.
 
-## 2.0.0 - 2021-02-02
-* Remove all Arbiter-local storage methods. [#262]
-* Re-export `tokio::pin`. [#262]
+## 2.5.0
 
-[#262]: https://github.com/actix/actix-net/pull/262
+- Add `System::run_with_code` to allow retrieving the exit code on stop.
 
+## 2.4.0
 
-## 2.0.0-beta.3 - 2021-01-31
-* Remove `run_in_tokio`, `attach_to_tokio` and `AsyncSystemRunner`. [#253]
-* Return `JoinHandle` from `actix_rt::spawn`. [#253]
-* Remove old `Arbiter::spawn`. Implementation is now inlined into `actix_rt::spawn`. [#253]
-* Rename `Arbiter::{send => spawn}` and `Arbiter::{exec_fn => spawn_fn}`. [#253]
-* Remove `Arbiter::exec`. [#253]
-* Remove deprecated `Arbiter::local_join` and `Arbiter::is_running`. [#253]
-* `Arbiter::spawn` now accepts !Unpin futures. [#256]
-* `System::new` no longer takes arguments. [#257]
-* Remove `System::with_current`. [#257]
-* Remove `Builder`. [#257]
-* Add `System::with_init` as replacement for `Builder::run`. [#257]
-* Rename `System::{is_set => is_registered}`. [#257]
-* Add `ArbiterHandle` for sending messages to non-current-thread arbiters. [#257].
-* `System::arbiter` now returns an `&ArbiterHandle`. [#257]
-* `Arbiter::current` now returns an `ArbiterHandle` instead. [#257]
-* `Arbiter::join` now takes self by value. [#257]
+- Add `Arbiter::try_current` for situations where thread may or may not have Arbiter context.
+- Start io-uring with `System::new` when feature is enabled.
 
-[#253]: https://github.com/actix/actix-net/pull/253
-[#254]: https://github.com/actix/actix-net/pull/254
-[#256]: https://github.com/actix/actix-net/pull/256
-[#257]: https://github.com/actix/actix-net/pull/257
+## 2.3.0
 
+- The `spawn` method can now resolve with non-unit outputs.
+- Add experimental (semver-exempt) `io-uring` feature for enabling async file I/O on linux.
 
-## 2.0.0-beta.2 - 2021-01-09
-* Add `task` mod with re-export of `tokio::task::{spawn_blocking, yield_now, JoinHandle}` [#245]
-* Add default "macros" feature to allow faster compile times when using `default-features=false`.
+## 2.2.0
 
-[#245]: https://github.com/actix/actix-net/pull/245
+- **BREAKING** `ActixStream::{poll_read_ready, poll_write_ready}` methods now return `Ready` object in ok variant.
+  - Breakage is acceptable since `ActixStream` was not intended to be public.
 
+## 2.1.0
 
-## 2.0.0-beta.1 - 2020-12-28
-* Add `System::attach_to_tokio` method. [#173]
-* Update `tokio` dependency to `1.0`. [#236]
-* Rename `time` module `delay_for` to `sleep`, `delay_until` to `sleep_until`, `Delay` to `Sleep`
-  to stay aligned with Tokio's naming. [#236]
-* Remove `'static` lifetime requirement for `Runtime::block_on` and `SystemRunner::block_on`.
-  * These methods now accept `&self` when calling. [#236]
-* Remove `'static` lifetime requirement for `System::run` and `Builder::run`. [#236]
-* `Arbiter::spawn` now panics when `System` is not in scope. [#207]
-* Fix work load issue by removing `PENDING` thread local. [#207]
+- Add `ActixStream` extension trait to include readiness methods.
+- Re-export `tokio::net::TcpSocket` in `net` module
 
-[#207]: https://github.com/actix/actix-net/pull/207
-[#236]: https://github.com/actix/actix-net/pull/236
+## 2.0.2
 
+- Add `Arbiter::handle` to get a handle of an owned Arbiter.
+- Add `System::try_current` for situations where actix may or may not be running a System.
 
-## 1.1.1 - 2020-04-30
-* Fix memory leak due to [#94] (see [#129] for more detail)
+## 2.0.1
 
-[#129]: https://github.com/actix/actix-net/issues/129
+- Expose `JoinError` from Tokio.
 
+## 2.0.0
 
-## 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
-  to get be able to `await` for spawned futures [#94]
+- Remove all Arbiter-local storage methods.
+- Re-export `tokio::pin`.
 
-[#94]: https://github.com/actix/actix-net/pull/94
-[#99]: https://github.com/actix/actix-net/pull/99
-[#124]: https://github.com/actix/actix-net/pull/124
+## 2.0.0-beta.3
 
+- Remove `run_in_tokio`, `attach_to_tokio` and `AsyncSystemRunner`.
+- Return `JoinHandle` from `actix_rt::spawn`.
+- Remove old `Arbiter::spawn`. Implementation is now inlined into `actix_rt::spawn`.
+- Rename `Arbiter::{send => spawn}` and `Arbiter::{exec_fn => spawn_fn}`.
+- Remove `Arbiter::exec`.
+- Remove deprecated `Arbiter::local_join` and `Arbiter::is_running`.
+- `Arbiter::spawn` now accepts !Unpin futures.
+- `System::new` no longer takes arguments.
+- Remove `System::with_current`.
+- Remove `Builder`.
+- Add `System::with_init` as replacement for `Builder::run`.
+- Rename `System::{is_set => is_registered}`.
+- Add `ArbiterHandle` for sending messages to non-current-thread arbiters.
+- `System::arbiter` now returns an `&ArbiterHandle`.
+- `Arbiter::current` now returns an `ArbiterHandle` instead.
+- `Arbiter::join` now takes self by value.
 
-## 1.0.0 - 2019-12-11
-* Update dependencies
+## 2.0.0-beta.2
 
+- Add `task` mod with re-export of `tokio::task::{spawn_blocking, yield_now, JoinHandle}`
+- Add default "macros" feature to allow faster compile times when using `default-features=false`.
 
-## 1.0.0-alpha.3 - 2019-12-07
-* Migrate to tokio 0.2
-* Fix compilation on non-unix platforms
+## 2.0.0-beta.1
 
+- Add `System::attach_to_tokio` method.
+- Update `tokio` dependency to `1.0`.
+- Rename `time` module `delay_for` to `sleep`, `delay_until` to `sleep_until`, `Delay` to `Sleep` to stay aligned with Tokio's naming.
+- Remove `'static` lifetime requirement for `Runtime::block_on` and `SystemRunner::block_on`.
+  - These methods now accept `&self` when calling.
+- Remove `'static` lifetime requirement for `System::run` and `Builder::run`.
+- `Arbiter::spawn` now panics when `System` is not in scope.
+- Fix work load issue by removing `PENDING` thread local.
 
-## 1.0.0-alpha.2 - 2019-12-02
-* Export `main` and `test` attribute macros
-* Export `time` module (re-export of tokio-timer)
-* Export `net` module (re-export of tokio-net)
+## 1.1.1
 
+- Fix memory leak due to
 
-## 1.0.0-alpha.1 - 2019-11-22
-* Migrate to std::future and tokio 0.2
+## 1.1.0 _(YANKED)_
 
+- Expose `System::is_set` to check if current system has ben started
+- Add `Arbiter::is_running` to check if event loop is running
+- Add `Arbiter::local_join` associated function to get be able to `await` for spawned futures
 
-## 0.2.6 - 2019-11-14
-* Allow to join arbiter's thread. #60
-* Fix arbiter's thread panic message.
+## 1.0.0
 
+- Update dependencies
 
-## 0.2.5 - 2019-09-02
-* Add arbiter specific storage
+## 1.0.0-alpha.3
 
+- Migrate to tokio 0.2
+- Fix compilation on non-unix platforms
 
-## 0.2.4 - 2019-07-17
-* Avoid a copy of the Future when initializing the Box. #29
+## 1.0.0-alpha.2
 
+- Export `main` and `test` attribute macros
+- Export `time` module (re-export of tokio-timer)
+- Export `net` module (re-export of tokio-net)
 
-## 0.2.3 - 2019-06-22
-* Allow to start System using existing CurrentThread Handle #22
+## 1.0.0-alpha.1
 
+- Migrate to std::future and tokio 0.2
 
-## 0.2.2 - 2019-03-28
-* Moved `blocking` module to `actix-threadpool` crate
+## 0.2.6
 
+- Allow to join arbiter's thread. #60
+- Fix arbiter's thread panic message.
 
-## 0.2.1 - 2019-03-11
-* Added `blocking` module
-* Added `Arbiter::exec_fn` - execute fn on the arbiter's thread
-* Added `Arbiter::exec` - execute fn on the arbiter's thread and wait result
+## 0.2.5
 
+- Add arbiter specific storage
 
-## 0.2.0 - 2019-03-06
-* `run` method returns `io::Result<()>`
-* Removed `Handle`
+## 0.2.4
 
+- Avoid a copy of the Future when initializing the Box. #29
 
-## 0.1.0 - 2018-12-09
-* Initial release
+## 0.2.3
+
+- Allow to start System using existing CurrentThread Handle #22
+
+## 0.2.2
+
+- Moved `blocking` module to `actix-threadpool` crate
+
+## 0.2.1
+
+- Added `blocking` module
+- Added `Arbiter::exec_fn` - execute fn on the arbiter's thread
+- Added `Arbiter::exec` - execute fn on the arbiter's thread and wait result
+
+## 0.2.0
+
+- `run` method returns `io::Result<()>`
+- Removed `Handle`
+
+## 0.1.0
+
+- Initial release

actix-rt/Cargo.toml

@@ -1,33 +1,36 @@
 [package]
 name = "actix-rt"
-version = "2.2.0"
-authors = [
-    "Nikolay Kim <fafhrd91@gmail.com>",
-    "Rob Ede <robjtede@icloud.com>",
-]
+version = "2.10.0"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>", "Rob Ede <robjtede@icloud.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"
 categories = ["network-programming", "asynchronous"]
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition.workspace = true
+rust-version.workspace = true
 
-[lib]
-name = "actix_rt"
-path = "src/lib.rs"
+[package.metadata.cargo_check_external_types]
+allowed_external_types = ["actix_macros::*", "tokio::*"]
 
 [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 = "1.23.1", features = ["rt", "net", "parking_lot", "signal", "sync", "time"] }
+
+# runtime for `io-uring` feature
+[target.'cfg(target_os = "linux")'.dependencies]
+tokio-uring = { version = "0.5", optional = true }
 
 [dev-dependencies]
-tokio = { version = "1.2", features = ["full"] }
-hyper = { version = "0.14", default-features = false, features = ["server", "tcp", "http1"] }
+tokio = { version = "1.23.1", features = ["full"] }
+
+[lints]
+workspace = true

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=2.10.0)](https://docs.rs/actix-rt/2.10.0)
 [![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/2.10.0/status.svg)](https://deps.rs/crate/actix-rt/2.10.0)
 ![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/examples/hyper.rs

@@ -1,28 +0,0 @@
-use hyper::service::{make_service_fn, service_fn};
-use hyper::{Body, Request, Response, Server};
-use std::convert::Infallible;
-use std::net::SocketAddr;
-
-async fn handle(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
-    Ok(Response::new(Body::from("Hello World")))
-}
-
-fn main() {
-    actix_rt::System::with_tokio_rt(|| {
-        tokio::runtime::Builder::new_multi_thread()
-            .enable_all()
-            .build()
-            .unwrap()
-    })
-    .block_on(async {
-        let make_service =
-            make_service_fn(|_conn| async { Ok::<_, Infallible>(service_fn(handle)) });
-
-        let server =
-            Server::bind(&SocketAddr::from(([127, 0, 0, 1], 3000))).serve(make_service);
-
-        if let Err(e) = server.await {
-            eprintln!("server error: {}", e);
-        }
-    })
-}

actix-rt/src/arbiter.rs

@@ -9,17 +9,14 @@ 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);
 
 thread_local!(
-    static HANDLE: RefCell<Option<ArbiterHandle>> = RefCell::new(None);
+    static HANDLE: RefCell<Option<ArbiterHandle>> = const { RefCell::new(None) };
 );
 
 pub(crate) enum ArbiterCommand {
@@ -98,20 +95,21 @@ 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
-    #[doc(hidden)]
+    #[cfg(not(all(target_os = "linux", feature = "io-uring")))]
     pub fn with_tokio_rt<F>(runtime_factory: F) -> Arbiter
     where
-        F: Fn() -> tokio::runtime::Runtime + Send + 'static,
+        F: FnOnce() -> tokio::runtime::Runtime + Send + 'static,
     {
         let sys = System::current();
         let system_id = sys.id();
@@ -127,7 +125,7 @@ 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);
@@ -150,24 +148,72 @@ impl Arbiter {
                         .send(SystemCommand::DeregisterArbiter(arb_id));
                 }
             })
-            .unwrap_or_else(|err| {
-                panic!("Cannot spawn Arbiter's thread: {:?}. {:?}", &name, err)
-            });
+            .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 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 +234,15 @@ 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.
@@ -200,6 +255,7 @@ impl Arbiter {
     /// If you require a result, include a response channel in the future.
     ///
     /// Returns true if future was sent successfully and false if the Arbiter has died.
+    #[track_caller]
     pub fn spawn<Fut>(&self, future: Fut) -> bool
     where
         Fut: Future<Output = ()> + Send + 'static,
@@ -215,6 +271,7 @@ impl Arbiter {
     /// channel in the function.
     ///
     /// Returns true if function was sent successfully and false if the Arbiter has died.
+    #[track_caller]
     pub fn spawn_fn<F>(&self, f: F) -> bool
     where
         F: FnOnce() + Send + 'static,
@@ -241,7 +298,7 @@ impl Future for ArbiterRunner {
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         // process all items currently buffered in channel
         loop {
-            match ready!(Pin::new(&mut self.rx).poll_recv(cx)) {
+            match ready!(self.rx.poll_recv(cx)) {
                 // channel closed; no more messages can be received
                 None => return Poll::Ready(()),
 

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};
 //!
@@ -32,31 +32,43 @@
 //! 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)]
 #![doc(html_logo_url = "https://actix.rs/img/logo.png")]
 #![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
 
-use std::future::Future;
+#[cfg(all(not(target_os = "linux"), feature = "io-uring"))]
+compile_error!("io_uring is a linux only feature.");
 
-use tokio::task::JoinHandle;
+use std::future::Future;
 
 // 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;
 mod system;
 
-pub use self::arbiter::{Arbiter, ArbiterHandle};
-pub use self::runtime::Runtime;
-pub use self::system::{System, SystemRunner};
-
 pub use tokio::pin;
+use tokio::task::JoinHandle;
+
+pub use self::{
+    arbiter::{Arbiter, ArbiterHandle},
+    runtime::Runtime,
+    system::{System, SystemRunner},
+};
 
 pub mod signal {
     //! Asynchronous signal handling (Tokio re-exports).
@@ -78,13 +90,13 @@ pub mod net {
         task::{Context, Poll},
     };
 
-    pub use tokio::io::Ready;
     use tokio::io::{AsyncRead, AsyncWrite, Interest};
-    pub use tokio::net::UdpSocket;
-    pub use tokio::net::{TcpListener, TcpSocket, TcpStream};
-
     #[cfg(unix)]
     pub use tokio::net::{UnixDatagram, UnixListener, UnixStream};
+    pub use tokio::{
+        io::Ready,
+        net::{TcpListener, TcpSocket, TcpStream, UdpSocket},
+    };
 
     /// Extension trait over async read+write types that can also signal readiness.
     #[doc(hidden)]
@@ -143,10 +155,9 @@ pub mod net {
 pub mod time {
     //! Utilities for tracking time (Tokio re-exports).
 
-    pub use tokio::time::Instant;
-    pub use tokio::time::{interval, interval_at, Interval};
-    pub use tokio::time::{sleep, sleep_until, Sleep};
-    pub use tokio::time::{timeout, Timeout};
+    pub use tokio::time::{
+        interval, interval_at, sleep, sleep_until, timeout, Instant, Interval, Sleep, Timeout,
+    };
 }
 
 pub mod task {
@@ -155,14 +166,42 @@ 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());
+/// # });
+/// ```
+#[track_caller]
 #[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.
@@ -58,6 +53,7 @@ impl Runtime {
     /// # Panics
     /// This function panics if the spawn fails. Failure occurs if the executor is currently at
     /// capacity and is unable to spawn a new future.
+    #[track_caller]
     pub fn spawn<F>(&self, future: F) -> JoinHandle<F::Output>
     where
         F: Future + 'static,
@@ -65,6 +61,62 @@ impl Runtime {
         self.local.spawn_local(future)
     }
 
+    /// Retrieves a reference to the underlying Tokio runtime associated with this instance.
+    ///
+    /// The Tokio runtime is responsible for executing asynchronous tasks and managing
+    /// the event loop for an asynchronous Rust program. This method allows accessing
+    /// the runtime to interact with its features directly.
+    ///
+    /// In a typical use case, you might need to share the same runtime between different
+    /// modules of your project. For example, a module might require a `tokio::runtime::Handle`
+    /// to spawn tasks on the same runtime, or the runtime itself to configure more complex
+    /// behaviours.
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// use actix_rt::Runtime;
+    ///
+    /// mod module_a {
+    ///     pub fn do_something(handle: tokio::runtime::Handle) {
+    ///         handle.spawn(async {
+    ///             // Some asynchronous task here
+    ///         });
+    ///     }
+    /// }
+    ///
+    /// mod module_b {
+    ///     pub fn do_something_else(rt: &tokio::runtime::Runtime) {
+    ///         rt.spawn(async {
+    ///             // Another asynchronous task here
+    ///         });
+    ///     }
+    /// }
+    ///
+    /// let actix_runtime = actix_rt::Runtime::new().unwrap();
+    /// let tokio_runtime = actix_runtime.tokio_runtime();
+    ///
+    /// let handle = tokio_runtime.handle().clone();
+    ///
+    /// module_a::do_something(handle);
+    /// module_b::do_something_else(tokio_runtime);
+    /// ```
+    ///
+    /// # Returns
+    ///
+    /// An immutable reference to the `tokio::runtime::Runtime` instance associated with this
+    /// `Runtime` instance.
+    ///
+    /// # Note
+    ///
+    /// While this method provides an immutable reference to the Tokio runtime, which is safe to share across threads,
+    /// be aware that spawning blocking tasks on the Tokio runtime could potentially impact the execution
+    /// of the Actix runtime. This is because Tokio is responsible for driving the Actix system,
+    /// and blocking tasks could delay or deadlock other tasks in run loop.
+    pub fn tokio_runtime(&self) -> &tokio::runtime::Runtime {
+        &self.rt
+    }
+
     /// Runs the provided future, blocking the current thread until the future completes.
     ///
     /// This function can be used to synchronously block the current thread until the provided
@@ -78,6 +130,7 @@ impl Runtime {
     ///
     /// The caller is responsible for ensuring that other spawned futures complete execution by
     /// calling `block_on` or `run`.
+    #[track_caller]
     pub fn block_on<F>(&self, f: F) -> F::Output
     where
         F: Future,

actix-rt/src/system.rs

@@ -11,12 +11,12 @@ 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);
 
 thread_local!(
-    static CURRENT: RefCell<Option<System>> = RefCell::new(None);
+    static CURRENT: RefCell<Option<System>> = const { RefCell::new(None) };
 );
 
 /// A manager for a per-thread distributed async runtime.
@@ -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.")
         })
     }
@@ -45,16 +46,15 @@ impl System {
     /// 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>(runtime_factory: F) -> SystemRunner
     where
-        F: Fn() -> tokio::runtime::Runtime,
+        F: FnOnce() -> tokio::runtime::Runtime,
     {
         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 +66,34 @@ 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: FnOnce() -> 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 +125,7 @@ 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())
     }
@@ -150,40 +171,121 @@ 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(())
-                }
-            }
+        rt.block_on(stop_rx)
+            .map_err(|err| io::Error::new(io::ErrorKind::Other, err))
+    }
 
-            Err(e) => Err(io::Error::new(io::ErrorKind::Other, e)),
-        }
+    /// Retrieves a reference to the underlying [Actix runtime](crate::Runtime) associated with this
+    /// `SystemRunner` instance.
+    ///
+    /// The Actix runtime is responsible for managing the event loop for an Actix system and
+    /// executing asynchronous tasks. This method provides access to the runtime, allowing direct
+    /// interaction with its features.
+    ///
+    /// In a typical use case, you might need to share the same runtime between different
+    /// parts of your project. For example, some components might require a [`Runtime`] to spawn
+    /// tasks on the same runtime.
+    ///
+    /// Read more in the documentation for [`Runtime`].
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// let system_runner = actix_rt::System::new();
+    /// let actix_runtime = system_runner.runtime();
+    ///
+    /// // Use the runtime to spawn an async task or perform other operations
+    /// ```
+    ///
+    /// # Note
+    ///
+    /// While this method provides an immutable reference to the Actix runtime, which is safe to
+    /// share across threads, be aware that spawning blocking tasks on the Actix runtime could
+    /// potentially impact system performance. This is because the Actix runtime is responsible for
+    /// driving the system, and blocking tasks could delay other tasks in the run loop.
+    ///
+    /// [`Runtime`]: crate::Runtime
+    pub fn runtime(&self) -> &crate::runtime::Runtime {
+        &self.rt
+    }
+
+    /// Runs the provided future, blocking the current thread until the future completes.
+    #[track_caller]
+    #[inline]
+    pub fn block_on<F: Future>(&self, fut: F) -> F::Output {
+        self.rt.block_on(fut)
+    }
+}
+
+/// 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 {
-        self.rt.block_on(fut)
+        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
+        })
     }
 }
 
@@ -222,7 +324,7 @@ impl Future for SystemController {
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         // process all items currently buffered in channel
         loop {
-            match ready!(Pin::new(&mut self.cmd_rx).poll_recv(cx)) {
+            match ready!(self.cmd_rx.poll_recv(cx)) {
                 // channel closed; no more messages can be received
                 None => return Poll::Ready(()),
 

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 +1,16 @@
+#![allow(missing_docs)]
+
 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 +25,15 @@ 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 +109,17 @@ 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 +136,7 @@ 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 +159,7 @@ 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 +171,7 @@ 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 +183,7 @@ 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 +214,7 @@ fn system_arbiter_spawn() {
     thread.join().unwrap();
 }
 
+#[cfg(not(feature = "io-uring"))]
 #[test]
 fn system_stop_stops_arbiters() {
     let sys = System::new();
@@ -220,8 +227,8 @@ 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 +237,7 @@ 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 +270,14 @@ 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(|| {
@@ -289,6 +303,18 @@ fn new_arbiter_with_tokio() {
     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]
 fn try_current_no_system() {
     assert!(System::try_current().is_none())
@@ -298,3 +324,55 @@ 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_all_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

@@ -1,179 +1,232 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
-* Remove `config` module. `ServiceConfig`, `ServiceRuntime` public types are removed due to this change. [#349]
-* Remove `ServerBuilder::configure` [#349]
+## Unreleased
 
-[#349]: https://github.com/actix/actix-net/pull/349
+## 2.5.1
 
+- Fix panic in test server.
+- Minimum supported Rust version (MSRV) is now 1.71.
 
-## 2.0.0-beta.5 - 2021-04-20
-* Server shutdown would notify all workers to exit regardless if shutdown is graceful.
-  This would make all worker shutdown immediately in force shutdown case. [#333]
-  
-[#333]: https://github.com/actix/actix-net/pull/333
+## 2.5.0
 
+- Update `mio` dependency to `1`.
 
-## 2.0.0-beta.4 - 2021-04-01
-* Prevent panic when `shutdown_timeout` is very large. [f9262db]
+## 2.4.0
 
-[f9262db]: https://github.com/actix/actix-net/commit/f9262db
+- Update `tokio-uring` dependency to `0.5`.
+- Minimum supported Rust version (MSRV) is now 1.70.
 
+## 2.3.0
 
-## 2.0.0-beta.3 - 2021-02-06
-* Hidden `ServerBuilder::start` method has been removed. Use `ServerBuilder::run`. [#246]
-* Add retry for EINTR signal (`io::Interrupted`) in `Accept`'s poll loop. [#264]
-* Add `ServerBuilder::worker_max_blocking_threads` to customize blocking thread pool size. [#265]
-* Update `actix-rt` to `2.0.0`. [#273]
+- Add support for MultiPath TCP (MPTCP) with `MpTcp` enum and `ServerBuilder::mptcp()` method.
+- Minimum supported Rust version (MSRV) is now 1.65.
 
-[#246]: https://github.com/actix/actix-net/pull/246
-[#264]: https://github.com/actix/actix-net/pull/264
-[#265]: https://github.com/actix/actix-net/pull/265
-[#273]: https://github.com/actix/actix-net/pull/273
+## 2.2.0
 
+- Minimum supported Rust version (MSRV) is now 1.59.
+- Update `tokio-uring` dependency to `0.4`.
 
-## 2.0.0-beta.2 - 2021-01-03
-* Merge `actix-testing` to `actix-server` as `test_server` mod. [#242]
+## 2.1.1
 
-[#242]: https://github.com/actix/actix-net/pull/242
+- No significant changes since `2.1.0`.
 
+## 2.1.0
 
-## 2.0.0-beta.1 - 2020-12-28
-* Added explicit info log message on accept queue pause. [#215]
-* Prevent double registration of sockets when back-pressure is resolved. [#223]
-* Update `mio` dependency to `0.7.3`. [#239]
-* Remove `socket2` dependency. [#239]
-* `ServerBuilder::backlog` now accepts `u32` instead of `i32`. [#239]
-* Remove `AcceptNotify` type and pass `WakerQueue` to `Worker` to wake up `Accept`'s `Poll`. [#239]
-* Convert `mio::net::TcpStream` to `actix_rt::net::TcpStream`(`UnixStream` for uds) using
-  `FromRawFd` and `IntoRawFd`(`FromRawSocket` and `IntoRawSocket` on windows). [#239]
-* Remove `AsyncRead` and `AsyncWrite` trait bound for `socket::FromStream` trait. [#239]
+- Update `tokio-uring` dependency to `0.3`.
+- Logs emitted now use the `tracing` crate with `log` compatibility.
+- Wait for accept thread to stop before sending completion signal.
 
-[#215]: https://github.com/actix/actix-net/pull/215
-[#223]: https://github.com/actix/actix-net/pull/223
-[#239]: https://github.com/actix/actix-net/pull/239
+## 2.0.0
 
+- No significant changes since `2.0.0-rc.4`.
 
-## 1.0.4 - 2020-09-12
-* Update actix-codec to 0.3.0.
-* Workers must be greater than 0. [#167]
+## 2.0.0-rc.4
 
-[#167]: https://github.com/actix/actix-net/pull/167
+- Update `tokio-uring` dependency to `0.2`.
 
+## 2.0.0-rc.3
 
-## 1.0.3 - 2020-05-19
-* Replace deprecated `net2` crate with `socket2` [#140]
+- No significant changes since `2.0.0-rc.2`.
 
-[#140]: https://github.com/actix/actix-net/pull/140
+## 2.0.0-rc.2
 
+- Simplify `TestServer`.
 
-## 1.0.2 - 2020-02-26
-* Avoid error by calling `reregister()` on Windows [#103]
+## 2.0.0-rc.1
 
-[#103]: https://github.com/actix/actix-net/pull/103
+- Hide implementation details of `Server`.
+- `Server` now runs only after awaiting it.
 
+## 2.0.0-beta.9
 
-## 1.0.1 - 2019-12-29
-* Rename `.start()` method to `.run()`
+- Restore `Arbiter` support lost in `beta.8`.
 
+## 2.0.0-beta.8
 
-## 1.0.0 - 2019-12-11
-* Use actix-net releases
+- Fix non-unix signal handler.
 
+## 2.0.0-beta.7
 
-## 1.0.0-alpha.4 - 2019-12-08
-* Use actix-service 1.0.0-alpha.4
+- Server can be started in regular Tokio runtime.
+- Expose new `Server` type whose `Future` impl resolves when server stops.
+- Rename `Server` to `ServerHandle`.
+- Add `Server::handle` to obtain handle to server.
+- Rename `ServerBuilder::{maxconn => max_concurrent_connections}`.
+- Deprecate crate-level `new` shortcut for server builder.
+- Minimum supported Rust version (MSRV) is now 1.52.
 
+## 2.0.0-beta.6
 
-## 1.0.0-alpha.3 - 2019-12-07
-* Migrate to tokio 0.2
-* Fix compilation on non-unix platforms
-* Better handling server configuration
+- Add experimental (semver-exempt) `io-uring` feature for enabling async file I/O on linux.
+- Server no long listens to `SIGHUP` signal. Previously, the received was not used but did block subsequent exit signals from working.
+- Remove `config` module. `ServiceConfig`, `ServiceRuntime` public types are removed due to this change.
+- Remove `ServerBuilder::configure`.
 
+## 2.0.0-beta.5
 
-## 1.0.0-alpha.2 - 2019-12-02
-* Simplify server service (remove actix-server-config)
-* Allow to wait on `Server` until server stops
+- Server shutdown notifies all workers to exit regardless if shutdown is graceful. This causes all workers to shutdown immediately in force shutdown case.
 
+## 2.0.0-beta.4
 
-## 0.8.0-alpha.1 - 2019-11-22
-* Migrate to `std::future`
+- Prevent panic when `shutdown_timeout` is very large. [f9262db]
 
+## 2.0.0-beta.3
 
-## 0.7.0 - 2019-10-04
-* Update `rustls` to 0.16
-* Minimum required Rust version upped to 1.37.0
+- Hidden `ServerBuilder::start` method has been removed. Use `ServerBuilder::run`.
+- Add retry for EINTR signal (`io::Interrupted`) in `Accept`'s poll loop.
+- Add `ServerBuilder::worker_max_blocking_threads` to customize blocking thread pool size.
+- Update `actix-rt` to `2.0.0`.
 
+## 2.0.0-beta.2
 
-## 0.6.1 - 2019-09-25
-* Add UDS listening support to `ServerBuilder`
+- Merge `actix-testing` to `actix-server` as `test_server` mod.
 
+## 2.0.0-beta.1
 
-## 0.6.0 - 2019-07-18
-* Support Unix domain sockets #3
+- Added explicit info log message on accept queue pause.
+- Prevent double registration of sockets when back-pressure is resolved.
+- Update `mio` dependency to `0.7.3`.
+- Remove `socket2` dependency.
+- `ServerBuilder::backlog` now accepts `u32` instead of `i32`.
+- Remove `AcceptNotify` type and pass `WakerQueue` to `Worker` to wake up `Accept`'s `Poll`.
+- Convert `mio::net::TcpStream` to `actix_rt::net::TcpStream`(`UnixStream` for uds) using `FromRawFd` and `IntoRawFd`(`FromRawSocket` and `IntoRawSocket` on windows).
+- Remove `AsyncRead` and `AsyncWrite` trait bound for `socket::FromStream` trait.
 
+## 1.0.4
 
-## 0.5.1 - 2019-05-18
-* ServerBuilder::shutdown_timeout() accepts u64
+- Update actix-codec to 0.3.0.
+- Workers must be greater than 0.
 
+## 1.0.3
 
-## 0.5.0 - 2019-05-12
-* Add `Debug` impl for `SslError`
-* Derive debug for `Server` and `ServerCommand`
-* Upgrade to actix-service 0.4
+- Replace deprecated `net2` crate with `socket2`.
 
+## 1.0.2
 
-## 0.4.3 - 2019-04-16
-* Re-export `IoStream` trait
-* Depend on `ssl` and `rust-tls` features from actix-server-config
+- Avoid error by calling `reregister()` on Windows.
 
+## 1.0.1
 
-## 0.4.2 - 2019-03-30
-* Fix SIGINT force shutdown
+- Rename `.start()` method to `.run()`
 
+## 1.0.0
 
-## 0.4.1 - 2019-03-14
-* `SystemRuntime::on_start()` - allow to run future before server service initialization
+- Use actix-net releases
 
+## 1.0.0-alpha.4
 
-## 0.4.0 - 2019-03-12
-* Use `ServerConfig` for service factory
-* Wrap tcp socket to `Io` type
-* Upgrade actix-service
+- Use actix-service 1.0.0-alpha.4
 
+## 1.0.0-alpha.3
 
-## 0.3.1 - 2019-03-04
-* Add `ServerBuilder::maxconnrate` sets the maximum per-worker number of concurrent connections
-* Add helper ssl error `SslError`
-* Rename `StreamServiceFactory` to `ServiceFactory`
-* Deprecate `StreamServiceFactory`
+- Migrate to tokio 0.2
+- Fix compilation on non-unix platforms
+- Better handling server configuration
 
+## 1.0.0-alpha.2
 
-## 0.3.0 - 2019-03-02
-* Use new `NewService` trait
+- Simplify server service (remove actix-server-config)
+- Allow to wait on `Server` until server stops
 
+## 0.8.0-alpha.1
 
-## 0.2.1 - 2019-02-09
-* Drop service response
+- Migrate to `std::future`
 
+## 0.7.0
 
-## 0.2.0 - 2019-02-01
-* Migrate to actix-service 0.2
-* Updated rustls dependency
+- Update `rustls` to 0.16
+- Minimum required Rust version upped to 1.37.0
 
+## 0.6.1
 
-## 0.1.3 - 2018-12-21
-* Fix max concurrent connections handling
+- Add UDS listening support to `ServerBuilder`
 
+## 0.6.0
 
-## 0.1.2 - 2018-12-12
-* rename ServiceConfig::rt() to ServiceConfig::apply()
-* Fix back-pressure for concurrent ssl handshakes
+- Support Unix domain sockets #3
 
+## 0.5.1
 
-## 0.1.1 - 2018-12-11
-* Fix signal handling on windows
+- ServerBuilder::shutdown_timeout() accepts u64
 
+## 0.5.0
 
-## 0.1.0 - 2018-12-09
-* Move server to separate crate
+- Add `Debug` impl for `SslError`
+- Derive debug for `Server` and `ServerCommand`
+- Upgrade to actix-service 0.4
+
+## 0.4.3
+
+- Re-export `IoStream` trait
+- Depend on `ssl` and `rust-tls` features from actix-server-config
+
+## 0.4.2
+
+- Fix SIGINT force shutdown
+
+## 0.4.1
+
+- `SystemRuntime::on_start()` - allow to run future before server service initialization
+
+## 0.4.0
+
+- Use `ServerConfig` for service factory
+- Wrap tcp socket to `Io` type
+- Upgrade actix-service
+
+## 0.3.1
+
+- Add `ServerBuilder::maxconnrate` sets the maximum per-worker number of concurrent connections
+- Add helper ssl error `SslError`
+- Rename `StreamServiceFactory` to `ServiceFactory`
+- Deprecate `StreamServiceFactory`
+
+## 0.3.0
+
+- Use new `NewService` trait
+
+## 0.2.1
+
+- Drop service response
+
+## 0.2.0
+
+- Migrate to actix-service 0.2
+- Updated rustls dependency
+
+## 0.1.3
+
+- Fix max concurrent connections handling
+
+## 0.1.2
+
+- rename ServiceConfig::rt() to ServiceConfig::apply()
+- Fix back-pressure for concurrent ssl handshakes
+
+## 0.1.1
+
+- Fix signal handling on windows
+
+## 0.1.0
+
+- Move server to separate crate

actix-server/Cargo.toml

@@ -1,40 +1,50 @@
 [package]
 name = "actix-server"
-version = "2.0.0-beta.5"
+version = "2.5.1"
 authors = [
-    "Nikolay Kim <fafhrd91@gmail.com>",
-    "fakeshadow <24548779@qq.com>",
+  "Nikolay Kim <fafhrd91@gmail.com>",
+  "Rob Ede <robjtede@icloud.com>",
+  "Ali MJ Al-Nasrawy <alimjalnasrawy@gmail.com>",
 ]
 description = "General purpose TCP server built for the Actix ecosystem"
-keywords = ["network", "framework", "async", "futures"]
-repository = "https://github.com/actix/actix-net"
+keywords = ["network", "tcp", "server", "framework", "async"]
 categories = ["network-programming", "asynchronous"]
+homepage = "https://actix.rs"
+repository = "https://github.com/actix/actix-net/tree/master/actix-server"
 license = "MIT OR Apache-2.0"
-edition = "2018"
+edition.workspace = true
+rust-version.workspace = true
 
-[lib]
-name = "actix_server"
-path = "src/lib.rs"
+[package.metadata.cargo_check_external_types]
+allowed_external_types = ["tokio::*"]
 
 [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"
-actix-utils = "3.0.0"
+actix-rt = { version = "2.10", default-features = false }
+actix-service = "2"
+actix-utils = "3"
+futures-core = { version = "0.3.17", default-features = false, features = ["alloc"] }
+futures-util = { version = "0.3.17", default-features = false, features = ["alloc"] }
+mio = { version = "1", features = ["os-poll", "net"] }
+socket2 = "0.5"
+tokio = { version = "1.23.1", features = ["sync"] }
+tracing = { version = "0.1.30", default-features = false, features = ["log"] }
 
-futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
-log = "0.4"
-mio = { version = "0.7.6", features = ["os-poll", "net"] }
-num_cpus = "1.13"
-tokio = { version = "1.2", features = ["sync"] }
+# runtime for `io-uring` feature
+[target.'cfg(target_os = "linux")'.dependencies]
+tokio-uring = { version = "0.5", optional = true }
 
 [dev-dependencies]
-actix-codec = "0.4.0-beta.1"
-actix-rt = "2.0.0"
+actix-codec = "0.5"
+actix-rt = "2.8"
 
 bytes = "1"
-env_logger = "0.8"
-futures-util = { version = "0.3.7", default-features = false, features = ["sink"] }
-tokio = { version = "1", features = ["io-util"] }
+futures-util = { version = "0.3.17", default-features = false, features = ["sink", "async-await-macro"] }
+pretty_env_logger = "0.5"
+tokio = { version = "1.23.1", features = ["io-util", "rt-multi-thread", "macros", "fs"] }
+
+[lints]
+workspace = true

actix-server/README.md

@@ -0,0 +1,21 @@
+# actix-server
+
+> General purpose TCP server built for the Actix ecosystem.
+
+<!-- prettier-ignore-start -->
+
+[![crates.io](https://img.shields.io/crates/v/actix-server?label=latest)](https://crates.io/crates/actix-server)
+[![Documentation](https://docs.rs/actix-server/badge.svg?version=2.5.1)](https://docs.rs/actix-server/2.5.1)
+[![Version](https://img.shields.io/badge/rustc-1.52+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.52.0.html)
+![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-server.svg)
+<br />
+[![Dependency Status](https://deps.rs/crate/actix-server/2.5.1/status.svg)](https://deps.rs/crate/actix-server/2.5.1)
+![Download](https://img.shields.io/crates/d/actix-server.svg)
+[![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+
+<!-- prettier-ignore-end -->
+
+## Resources
+
+- [Library Documentation](https://docs.rs/actix-server)
+- [Examples](/actix-server/examples)

actix-server/examples/file-reader.rs

@@ -0,0 +1,98 @@
+//! Simple file-reader TCP server with framed stream.
+//!
+//! Using the following command:
+//!
+//! ```sh
+//! nc 127.0.0.1 8080
+//! ```
+//!
+//! Follow the prompt and enter a file path, relative or absolute.
+
+#![allow(missing_docs)]
+
+use std::io;
+
+use actix_codec::{Framed, LinesCodec};
+use actix_rt::net::TcpStream;
+use actix_server::Server;
+use actix_service::{fn_service, ServiceFactoryExt as _};
+use futures_util::{SinkExt as _, StreamExt as _};
+use tokio::{fs::File, io::AsyncReadExt as _};
+
+async fn run() -> io::Result<()> {
+    pretty_env_logger::formatted_timed_builder()
+        .parse_env(pretty_env_logger::env_logger::Env::default().default_filter_or("info"));
+
+    let addr = ("127.0.0.1", 8080);
+    tracing::info!("starting server on port: {}", &addr.0);
+
+    // Bind socket address and start worker(s). By default, the server uses the number of physical
+    // CPU cores as the worker count. For this reason, the closure passed to bind needs to return
+    // a service *factory*; so it can be created once per worker.
+    Server::build()
+        .bind("file-reader", addr, move || {
+            fn_service(move |stream: TcpStream| async move {
+                // set up codec to use with I/O resource
+                let mut framed = Framed::new(stream, LinesCodec::default());
+
+                loop {
+                    // prompt for file name
+                    framed.send("Type file name to return:").await?;
+
+                    // wait for next line
+                    match framed.next().await {
+                        Some(Ok(line)) => {
+                            match File::open(&line).await {
+                                Ok(mut file) => {
+                                    tracing::info!("reading file: {}", &line);
+
+                                    // read file into String buffer
+                                    let mut buf = String::new();
+                                    file.read_to_string(&mut buf).await?;
+
+                                    // send String into framed object
+                                    framed.send(buf).await?;
+
+                                    // break out of loop and
+                                    break;
+                                }
+                                Err(err) => {
+                                    tracing::error!("{}", err);
+                                    framed
+                                        .send("File not found or not readable. Try again.")
+                                        .await?;
+                                    continue;
+                                }
+                            };
+                        }
+
+                        // not being able to read a line from the stream is unrecoverable
+                        Some(Err(err)) => return Err(err),
+
+                        // This EOF won't be hit.
+                        None => continue,
+                    }
+                }
+
+                // close connection after file has been copied to TCP stream
+                Ok(())
+            })
+            .map_err(|err| tracing::error!("service error: {:?}", err))
+        })?
+        .workers(2)
+        .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/examples/tcp-echo.rs

@@ -10,7 +10,7 @@
 //! the length of each line it echos and the total size of data sent when the connection is closed.
 
 use std::{
-    env, io,
+    io,
     sync::{
         atomic::{AtomicUsize, Ordering},
         Arc,
@@ -22,22 +22,20 @@ use actix_server::Server;
 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", "info");
-    env_logger::init();
+async fn run() -> io::Result<()> {
+    pretty_env_logger::formatted_timed_builder()
+        .parse_env(pretty_env_logger::env_logger::Env::default().default_filter_or("info"));
 
     let count = Arc::new(AtomicUsize::new(0));
 
     let addr = ("127.0.0.1", 8080);
-    info!("starting server on port: {}", &addr.0);
+    tracing::info!("starting server on port: {}", &addr.0);
 
-    // Bind socket address and start worker(s). By default, the server uses the number of available
-    // logical CPU cores as the worker count. For this reason, the closure passed to bind needs
-    // to return a service *factory*; so it can be created once per worker.
+    // Bind socket address and start worker(s). By default, the server uses the number of physical
+    // CPU cores as the worker count. For this reason, the closure passed to bind needs to return
+    // a service *factory*; so it can be created once per worker.
     Server::build()
         .bind("echo", addr, move || {
             let count = Arc::clone(&count);
@@ -60,14 +58,14 @@ async fn main() -> io::Result<()> {
 
                             // more bytes to process
                             Ok(bytes_read) => {
-                                info!("[{}] read {} bytes", num, bytes_read);
+                                tracing::info!("[{}] read {} bytes", num, bytes_read);
                                 stream.write_all(&buf[size..]).await.unwrap();
                                 size += bytes_read;
                             }
 
                             // stream error; bail from loop with error
                             Err(err) => {
-                                error!("Stream Error: {:?}", err);
+                                tracing::error!("stream error: {:?}", err);
                                 return Err(());
                             }
                         }
@@ -77,14 +75,27 @@ async fn main() -> io::Result<()> {
                     Ok((buf.freeze(), size))
                 }
             })
-            .map_err(|err| error!("Service Error: {:?}", err))
+            .map_err(|err| tracing::error!("service error: {:?}", err))
             .and_then(move |(_, size)| {
                 let num = num2.load(Ordering::SeqCst);
-                info!("[{}] total bytes read: {}", num, size);
+                tracing::info!("[{}] total bytes read: {}", num, size);
                 ok(size)
             })
         })?
-        .workers(1)
+        .workers(2)
         .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

@@ -1,17 +1,18 @@
-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 mio::{Interest, Poll, Token as MioToken};
+use tracing::{debug, error, info};
 
-use crate::server::Server;
-use crate::socket::MioListener;
-use crate::waker_queue::{WakerInterest, WakerQueue, WAKER_TOKEN};
-use crate::worker::{Conn, WorkerHandleAccept};
+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 {
     token: usize,
@@ -20,211 +21,116 @@ struct ServerSocketInfo {
 
     /// Timeout is used to mark the deadline when this socket's listener should be registered again
     /// after an error.
-    timeout: Option<Instant>,
+    timeout: Option<actix_rt::time::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<(usize, MioListener)>,
-        handles: Vec<WorkerHandleAccept>,
-    ) {
-        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);
-    }
-}
-
-/// poll instance of the server.
-struct Accept {
+/// Poll instance of the server.
+pub(crate) struct Accept {
     poll: Poll,
-    waker: WakerQueue,
+    waker_queue: WakerQueue,
     handles: Vec<WorkerHandleAccept>,
-    srv: Server,
+    srv: ServerHandle,
     next: usize,
     avail: Availability,
+    /// use the smallest duration from sockets timeout.
+    timeout: Option<Duration>,
     paused: bool,
 }
 
-/// Array of u128 with every bit as marker for a worker handle's availability.
-struct Availability([u128; 4]);
-
-impl Default for Availability {
-    fn default() -> Self {
-        Self([0; 4])
-    }
-}
-
-impl Availability {
-    /// Check if any worker handle is available
-    #[inline(always)]
-    fn available(&self) -> bool {
-        self.0.iter().any(|a| *a != 0)
-    }
-
-    /// Check if worker handle is available by index
-    #[inline(always)]
-    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.
-    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.
-    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.
-    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")
-        }
-    }
-}
-
-/// 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
-}
-
 impl Accept {
     pub(crate) fn start(
-        poll: Poll,
-        waker: WakerQueue,
-        socks: Vec<(usize, MioListener)>,
-        srv: Server,
-        handles: Vec<WorkerHandleAccept>,
-    ) {
-        // 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, mut sockets) =
-                    Accept::new_with_sockets(poll, waker, socks, handles, srv);
+        sockets: Vec<(usize, MioListener)>,
+        builder: &ServerBuilder,
+    ) -> io::Result<(WakerQueue, Vec<WorkerHandleServer>, thread::JoinHandle<()>)> {
+        let handle_server = ServerHandle::new(builder.cmd_tx.clone());
 
-                accept.poll_with(&mut sockets);
+        // 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,
+        )?;
+
+        let accept_handle = 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, accept_handle))
     }
 
     fn new_with_sockets(
         poll: Poll,
-        waker: WakerQueue,
-        socks: Vec<(usize, MioListener)>,
-        handles: Vec<WorkerHandleAccept>,
-        srv: Server,
-    ) -> (Accept, Vec<ServerSocketInfo>) {
-        let sockets = socks
+        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)
-                    .unwrap_or_else(|e| panic!("Can not register io: {}", e));
+                    .register(&mut lst, MioToken(token), Interest::READABLE)?;
 
-                ServerSocketInfo {
+                Ok(ServerSocketInfo {
                     token,
                     lst,
                     timeout: None,
-                }
+                })
             })
-            .collect();
+            .collect::<io::Result<_>>()?;
 
         let mut avail = Availability::default();
 
         // Assume all handles are avail at construct time.
-        avail.set_available_all(&handles);
+        avail.set_available_all(&accept_handles);
 
         let accept = Accept {
             poll,
-            waker,
-            handles,
-            srv,
+            waker_queue,
+            handles: accept_handles,
+            srv: server_handle,
             next: 0,
             avail,
+            timeout: None,
             paused: false,
         };
 
-        (accept, sockets)
+        Ok((accept, sockets))
     }
 
+    /// blocking wait for readiness events triggered by mio
     fn poll_with(&mut self, sockets: &mut [ServerSocketInfo]) {
-        let mut events = mio::Events::with_capacity(128);
+        let mut events = mio::Events::with_capacity(256);
 
         loop {
-            if let Err(e) = self.poll.poll(&mut events, None) {
-                match e.kind() {
+            if let Err(err) = self.poll.poll(&mut events, self.timeout) {
+                match err.kind() {
                     io::ErrorKind::Interrupted => {}
-                    _ => panic!("Poll error: {}", e),
+                    _ => panic!("Poll error: {}", err),
                 }
             }
 
@@ -234,7 +140,7 @@ impl Accept {
                     WAKER_TOKEN => {
                         let exit = self.handle_waker(sockets);
                         if exit {
-                            info!("Accept is stopped.");
+                            info!("accept thread stopped");
                             return;
                         }
                     }
@@ -244,6 +150,9 @@ impl Accept {
                     }
                 }
             }
+
+            // check for timeout and re-register sockets
+            self.process_timeout(sockets);
         }
     }
 
@@ -252,11 +161,13 @@ impl Accept {
         // 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.guard();
+            // Take guard with every iteration so no new interests can be added until the current
+            // task is done. Take care not to take the guard again inside this loop.
+            let mut guard = self.waker_queue.guard();
+
+            #[allow(clippy::significant_drop_in_scrutinee)]
             match guard.pop_front() {
-                // worker notify it becomes available.
+                // Worker notified it became available.
                 Some(WakerInterest::WorkerAvailable(idx)) => {
                     drop(guard);
 
@@ -266,7 +177,8 @@ impl Accept {
                         self.accept_all(sockets);
                     }
                 }
-                // a new worker thread is made and it's handle would be added to Accept
+
+                // A new worker thread has been created so store its handle.
                 Some(WakerInterest::Worker(handle)) => {
                     drop(guard);
 
@@ -277,12 +189,7 @@ impl Accept {
                         self.accept_all(sockets);
                     }
                 }
-                // got timer interest and it's time to try register socket(s) again
-                Some(WakerInterest::Timer) => {
-                    drop(guard);
 
-                    self.process_timer(sockets)
-                }
                 Some(WakerInterest::Pause) => {
                     drop(guard);
 
@@ -292,6 +199,7 @@ impl Accept {
                         self.deregister_all(sockets);
                     }
                 }
+
                 Some(WakerInterest::Resume) => {
                     drop(guard);
 
@@ -305,6 +213,7 @@ impl Accept {
                         self.accept_all(sockets);
                     }
                 }
+
                 Some(WakerInterest::Stop) => {
                     if !self.paused {
                         self.deregister_all(sockets);
@@ -312,6 +221,7 @@ impl Accept {
 
                     return true;
                 }
+
                 // waker queue is drained
                 None => {
                     // Reset the WakerQueue before break so it does not grow infinitely
@@ -323,25 +233,44 @@ impl Accept {
         }
     }
 
-    fn process_timer(&self, sockets: &mut [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(|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.paused {
-                    self.register_logged(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 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.
-            });
+            }
+            None => self.timeout = Some(duration),
+        }
     }
 
     #[cfg(not(target_os = "windows"))]
@@ -370,16 +299,16 @@ impl Accept {
 
     fn register_logged(&self, info: &mut ServerSocketInfo) {
         match self.register(info) {
-            Ok(_) => info!("Resume accepting connections on {}", info.lst.local_addr()),
-            Err(e) => error!("Can not register server socket {}", e),
+            Ok(_) => debug!("resume accepting connections on {}", info.lst.local_addr()),
+            Err(err) => error!("can not register server socket {}", err),
         }
     }
 
     fn deregister_logged(&self, info: &mut ServerSocketInfo) {
         match self.poll.registry().deregister(&mut info.lst) {
-            Ok(_) => info!("Paused accepting connections on {}", info.lst.local_addr()),
-            Err(e) => {
-                error!("Can not deregister server socket {}", e)
+            Ok(_) => debug!("paused accepting connections on {}", info.lst.local_addr()),
+            Err(err) => {
+                error!("can not deregister server socket {}", err)
             }
         }
     }
@@ -387,12 +316,12 @@ impl Accept {
     fn deregister_all(&self, sockets: &mut [ServerSocketInfo]) {
         // This is a best effort implementation with following limitation:
         //
-        // Every ServerSocketInfo with associate timeout will be skipped and it's timeout
-        // is removed in the process.
+        // 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 reregistered
-        // before expected timing.
+        // 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.
@@ -423,7 +352,7 @@ impl Accept {
                 self.remove_next();
 
                 if self.handles.is_empty() {
-                    error!("No workers");
+                    error!("no workers");
                     // All workers are gone and Conn is nowhere to be sent.
                     // Treat this situation as Ok and drop Conn.
                     return Ok(());
@@ -469,10 +398,10 @@ impl Accept {
                     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,
-                Err(e) => {
-                    error!("Error accepting connection: {}", e);
+                Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => return,
+                Err(ref err) if connection_error(err) => continue,
+                Err(err) => {
+                    error!("error accepting connection: {}", err);
 
                     // deregister listener temporary
                     self.deregister_logged(info);
@@ -481,13 +410,7 @@ 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;
                 }
@@ -526,67 +449,14 @@ impl Accept {
     }
 }
 
-#[cfg(test)]
-mod test {
-    use super::Availability;
-
-    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));
-    }
+/// 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

@@ -1,43 +1,47 @@
-use std::{
-    future::Future,
-    io, mem,
-    pin::Pin,
-    task::{Context, Poll},
-    time::Duration,
+use std::{io, num::NonZeroUsize, time::Duration};
+
+use actix_rt::net::TcpStream;
+use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender};
+
+use crate::{
+    server::ServerCommand,
+    service::{InternalServiceFactory, ServerServiceFactory, 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},
-    oneshot,
-};
+/// Multipath TCP (MPTCP) preference.
+///
+/// Currently only useful on Linux.
+///
+#[cfg_attr(target_os = "linux", doc = "Also see [`ServerBuilder::mptcp()`].")]
+#[derive(Debug, Clone)]
+pub enum MpTcp {
+    /// MPTCP will not be used when binding sockets.
+    Disabled,
 
-use crate::accept::AcceptLoop;
-use crate::join_all;
-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::{ServerWorker, ServerWorkerConfig, WorkerHandleAccept, WorkerHandleServer};
+    /// MPTCP will be attempted when binding sockets. If errors occur, regular TCP will be
+    /// attempted, too.
+    TcpFallback,
 
-/// Server builder
+    /// MPTCP will be used when binding sockets (with no fallback).
+    NoFallback,
+}
+
+/// [Server] builder.
 pub struct ServerBuilder {
-    threads: usize,
-    token: usize,
-    backlog: u32,
-    handles: Vec<(usize, WorkerHandleServer)>,
-    services: Vec<Box<dyn InternalServiceFactory>>,
-    sockets: Vec<(usize, 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) mptcp: MpTcp,
+    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 {
@@ -49,30 +53,36 @@ 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(),
+            threads: std::thread::available_parallelism().map_or(2, NonZeroUsize::get),
             token: 0,
-            handles: Vec::new(),
-            services: Vec::new(),
+            factories: Vec::new(),
             sockets: Vec::new(),
-            accept: AcceptLoop::new(server.clone()),
             backlog: 2048,
+            mptcp: MpTcp::Disabled,
             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.
+    /// Sets number of workers to start.
     ///
-    /// By default server uses number of available logical cpu as workers
-    /// count. Workers must be greater than 0.
+    /// See [`bind()`](Self::bind()) for more details on how worker count affects the number of
+    /// server factory instantiations.
+    ///
+    /// The default worker count is the determined by [`std::thread::available_parallelism()`]. See
+    /// its documentation to determine what behavior you should expect when server is run.
+    ///
+    /// `num` must be greater than 0.
+    ///
+    /// # Panics
+    ///
+    /// Panics if `num` is 0.
     pub fn workers(mut self, num: usize) -> Self {
         assert_ne!(num, 0, "workers must be greater than 0");
         self.threads = num;
@@ -99,10 +109,9 @@ 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.
     ///
@@ -112,26 +121,52 @@ impl ServerBuilder {
         self
     }
 
+    /// Sets MultiPath TCP (MPTCP) preference on bound sockets.
+    ///
+    /// Multipath TCP (MPTCP) builds on top of TCP to improve connection redundancy and performance
+    /// by sharing a network data stream across multiple underlying TCP sessions. See [mptcp.dev]
+    /// for more info about MPTCP itself.
+    ///
+    /// MPTCP is available on Linux kernel version 5.6 and higher. In addition, you'll also need to
+    /// ensure the kernel option is enabled using `sysctl net.mptcp.enabled=1`.
+    ///
+    /// This method will have no effect if called after a `bind()`.
+    ///
+    /// [mptcp.dev]: https://www.mptcp.dev
+    #[cfg(target_os = "linux")]
+    pub fn mptcp(mut self, mptcp_enabled: MpTcp) -> Self {
+        self.mptcp = mptcp_enabled;
+        self
+    }
+
     /// 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(mut self, num: usize) -> Self {
+    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)
+    }
+
+    /// Sets flag to stop Actix `System` after server shutdown.
+    ///
+    /// This has no effect when server is running in a Tokio-only runtime.
     pub fn system_exit(mut self) -> Self {
         self.exit = true;
         self
     }
 
-    /// Disable signal handling.
+    /// Disables OS signal handling.
     pub fn disable_signals(mut self) -> Self {
-        self.no_signals = true;
+        self.listen_os_signals = false;
         self
     }
 
@@ -147,78 +182,62 @@ impl ServerBuilder {
         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>
+    /// Adds new service to the server.
+    ///
+    /// Note that, if a DNS lookup is required, resolving hostnames is a blocking operation.
+    ///
+    /// # Worker Count
+    ///
+    /// The `factory` will be instantiated multiple times in most scenarios. The number of
+    /// instantiations is number of [`workers`](Self::workers()) × number of sockets resolved by
+    /// `addrs`.
+    ///
+    /// For example, if you've manually set [`workers`](Self::workers()) to 2, and use `127.0.0.1`
+    /// as the bind `addrs`, then `factory` will be instantiated twice. However, using `localhost`
+    /// as the bind `addrs` can often resolve to both `127.0.0.1` (IPv4) _and_ `::1` (IPv6), causing
+    /// the `factory` to be instantiated 4 times (2 workers × 2 bind addresses).
+    ///
+    /// Using a bind address of `0.0.0.0`, which signals to use all interfaces, may also multiple
+    /// the number of instantiations in a similar way.
+    ///
+    /// # Errors
+    ///
+    /// Returns an `io::Error` if:
+    /// - `addrs` cannot be resolved into one or more socket addresses;
+    /// - all the resolved socket addresses are already bound.
+    pub fn bind<F, U, N>(mut self, name: N, addrs: U, factory: F) -> io::Result<Self>
     where
-        F: ServiceFactory<TcpStream>,
+        F: ServerServiceFactory<TcpStream>,
         U: ToSocketAddrs,
+        N: AsRef<str>,
     {
-        let sockets = bind_addr(addr, self.backlog)?;
+        let sockets = bind_addr(addrs, self.backlog, &self.mptcp)?;
+
+        tracing::trace!("binding server to: {sockets:?}");
 
         for lst in sockets {
             let token = self.next_token();
-            self.services.push(StreamNewService::create(
+
+            self.factories.push(StreamNewService::create(
                 name.as_ref().to_string(),
                 token,
                 factory.clone(),
                 lst.local_addr()?,
             ));
+
             self.sockets
                 .push((token, name.as_ref().to_string(), MioListener::Tcp(lst)));
         }
+
         Ok(self)
     }
 
-    /// 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>,
-        N: AsRef<str>,
-        U: AsRef<std::path::Path>,
-    {
-        // The path must not exist when we try to bind.
-        // Try to remove it to avoid bind error.
-        if let Err(e) = std::fs::remove_file(addr.as_ref()) {
-            // NotFound is expected and not an issue. Anything else is.
-            if e.kind() != std::io::ErrorKind::NotFound {
-                return Err(e);
-            }
-        }
-
-        let lst = crate::socket::StdUnixListener::bind(addr)?;
-        self.listen_uds(name, lst, factory)
-    }
-
-    /// 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)]
-    pub fn listen_uds<F, N: AsRef<str>>(
-        mut self,
-        name: N,
-        lst: crate::socket::StdUnixListener,
-        factory: F,
-    ) -> io::Result<Self>
-    where
-        F: ServiceFactory<actix_rt::net::UnixStream>,
-    {
-        use std::net::{IpAddr, Ipv4Addr};
-        lst.set_nonblocking(true)?;
-        let token = self.next_token();
-        let addr = StdSocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
-        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)
-    }
-
-    /// Add new service to the server.
+    /// Adds service to the server using a socket listener already bound.
+    ///
+    /// # Worker Count
+    ///
+    /// The `factory` will be instantiated multiple times in most scenarios. The number of
+    /// instantiations is: number of [`workers`](Self::workers()).
     pub fn listen<F, N: AsRef<str>>(
         mut self,
         name: N,
@@ -226,13 +245,13 @@ impl ServerBuilder {
         factory: F,
     ) -> io::Result<Self>
     where
-        F: ServiceFactory<TcpStream>,
+        F: ServerServiceFactory<TcpStream>,
     {
         lst.set_nonblocking(true)?;
         let addr = lst.local_addr()?;
 
         let token = self.next_token();
-        self.services.push(StreamNewService::create(
+        self.factories.push(StreamNewService::create(
             name.as_ref().to_string(),
             token,
             factory,
@@ -246,166 +265,12 @@ impl ServerBuilder {
     }
 
     /// Starts processing incoming connections and return server controller.
-    pub fn run(mut self) -> Server {
+    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);
-
-            // start workers
-            let handles = (0..self.threads)
-                .map(|idx| {
-                    let (handle_accept, handle_server) =
-                        self.start_worker(idx, self.accept.waker_owned());
-                    self.handles.push((idx, handle_server));
-
-                    handle_accept
-                })
-                .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_queue: WakerQueue,
-    ) -> (WorkerHandleAccept, WorkerHandleServer) {
-        let services = self.services.iter().map(|v| v.clone_factory()).collect();
-
-        ServerWorker::start(idx, services, waker_queue, 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
-                let stop = self
-                    .handles
-                    .iter()
-                    .map(move |worker| worker.1.stop(graceful))
-                    .collect();
-
-                rt::spawn(async move {
-                    if graceful {
-                        let _ = join_all(stop).await;
-                    }
-
-                    if let Some(tx) = completion {
-                        let _ = tx.send(());
-                    }
-                    for tx in notify {
-                        let _ = tx.send(());
-                    }
-
-                    if exit {
-                        sleep(Duration::from_millis(300)).await;
-                        System::current().stop();
-                    }
-                });
-            }
-            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_accept, handle_server) =
-                        self.start_worker(new_idx, self.accept.waker_owned());
-                    self.handles.push((new_idx, handle_server));
-                    self.accept.wake(WakerInterest::Worker(handle_accept));
-                }
-            }
+            tracing::info!("starting {} workers", self.threads);
+            Server::new(self)
         }
     }
 
@@ -416,57 +281,98 @@ impl ServerBuilder {
     }
 }
 
-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,
+#[cfg(unix)]
+impl ServerBuilder {
+    /// Adds new service to the server using a UDS (unix domain socket) address.
+    ///
+    /// # Worker Count
+    ///
+    /// The `factory` will be instantiated multiple times in most scenarios. The number of
+    /// instantiations is: number of [`workers`](Self::workers()).
+    pub fn bind_uds<F, U, N>(self, name: N, addr: U, factory: F) -> io::Result<Self>
+    where
+        F: ServerServiceFactory<actix_rt::net::UnixStream>,
+        N: AsRef<str>,
+        U: AsRef<std::path::Path>,
+    {
+        // The path must not exist when we try to bind.
+        // Try to remove it to avoid bind error.
+        if let Err(err) = std::fs::remove_file(addr.as_ref()) {
+            // NotFound is expected and not an issue. Anything else is.
+            if err.kind() != std::io::ErrorKind::NotFound {
+                return Err(err);
             }
         }
+
+        let lst = crate::socket::StdUnixListener::bind(addr)?;
+        self.listen_uds(name, lst, factory)
+    }
+
+    /// Adds new service to the server using a UDS (unix domain socket) listener already bound.
+    ///
+    /// Useful when running as a systemd service and a socket FD is acquired externally.
+    ///
+    /// # Worker Count
+    ///
+    /// The `factory` will be instantiated multiple times in most scenarios. The number of
+    /// instantiations is: number of [`workers`](Self::workers()).
+    pub fn listen_uds<F, N: AsRef<str>>(
+        mut self,
+        name: N,
+        lst: crate::socket::StdUnixListener,
+        factory: F,
+    ) -> io::Result<Self>
+    where
+        F: ServerServiceFactory<actix_rt::net::UnixStream>,
+    {
+        use std::net::{IpAddr, Ipv4Addr};
+
+        lst.set_nonblocking(true)?;
+
+        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,
+            addr,
+        ));
+
+        self.sockets
+            .push((token, name.as_ref().to_string(), MioListener::from(lst)));
+
+        Ok(self)
     }
 }
 
 pub(super) fn bind_addr<S: ToSocketAddrs>(
     addr: S,
     backlog: u32,
+    mptcp: &MpTcp,
 ) -> io::Result<Vec<MioTcpListener>> {
-    let mut err = None;
-    let mut succ = false;
+    let mut opt_err = None;
+    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, mptcp) {
             Ok(lst) => {
-                succ = true;
+                success = true;
                 sockets.push(lst);
             }
-            Err(e) => err = Some(e),
+            Err(err) => opt_err = Some(err),
         }
     }
 
-    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) = opt_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/handle.rs

@@ -0,0 +1,56 @@
+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),
+            force_system_stop: false,
+        });
+
+        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 actix_utils::future::ready;
+
+    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/lib.rs

@@ -1,11 +1,13 @@
 //! General purpose TCP server.
 
-#![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 accept;
+mod availability;
 mod builder;
+mod handle;
+mod join_all;
 mod server;
 mod service;
 mod signals;
@@ -14,90 +16,19 @@ mod test_server;
 mod waker_queue;
 mod worker;
 
-pub use self::builder::ServerBuilder;
-pub use self::server::Server;
-pub use self::service::ServiceFactory;
-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};
+pub use self::{
+    builder::{MpTcp, ServerBuilder},
+    handle::ServerHandle,
+    server::Server,
+    service::ServerServiceFactory,
+    test_server::TestServer,
+};
 
 /// Start server building process
+#[doc(hidden)]
+#[deprecated(since = "2.0.0", note = "Use `Server::build()`.")]
 pub fn new() -> ServerBuilder {
     ServerBuilder::default()
 }
-
-// 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::*;
-
-    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/server.rs

@@ -1,112 +1,368 @@
-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},
+    thread,
+    time::Duration,
+};
 
-use tokio::sync::mpsc::UnboundedSender;
-use tokio::sync::oneshot;
+use actix_rt::{time::sleep, System};
+use futures_core::{future::BoxFuture, Stream};
+use futures_util::stream::StreamExt as _;
+use tokio::sync::{mpsc::UnboundedReceiver, oneshot};
+use tracing::{error, info};
 
-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<()>>,
+
+        /// Force System exit when true, overriding `ServerBuilder::system_exit()` if it is false.
+        force_system_stop: bool,
     },
-    /// 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 or polled in order to start running. It will resolve when the
+/// server has fully shut down.
+///
+/// # Shutdown Signals
+/// On UNIX systems, `SIGTERM` will start a graceful shutdown and `SIGQUIT` 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 = "Server does nothing unless you `.await` or poll it"]
+pub struct Server {
+    handle: ServerHandle,
+    fut: BoxFuture<'static, io::Result<()>>,
+}
 
 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(builder: ServerBuilder) -> Self {
+        Server {
+            handle: ServerHandle::new(builder.cmd_tx.clone()),
+            fut: Box::pin(ServerInner::run(builder)),
+        }
     }
 
-    pub(crate) fn worker_faulted(&self, idx: usize) {
-        let _ = self.0.send(ServerCommand::WorkerFaulted(idx));
-    }
-
-    /// Pause accepting incoming connections
+    /// Get a `Server` handle that can be used issue commands and change it's state.
     ///
-    /// 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;
-        }
-    }
-
-    /// 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)
+    /// See [ServerHandle](ServerHandle) for usage.
+    pub fn handle(&self) -> ServerHandle {
+        self.handle.clone()
     }
 }
 
 impl Future for Server {
     type Output = io::Result<()>;
 
+    #[inline]
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        let this = self.get_mut();
+        Pin::new(&mut Pin::into_inner(self).fut).poll(cx)
+    }
+}
 
-        if this.1.is_none() {
-            let (tx, rx) = oneshot::channel();
-            if this.0.send(ServerCommand::Notify(tx)).is_err() {
-                return Poll::Ready(Ok(()));
+pub struct ServerInner {
+    worker_handles: Vec<WorkerHandleServer>,
+    accept_handle: Option<thread::JoinHandle<()>>,
+    worker_config: ServerWorkerConfig,
+    services: Vec<Box<dyn InternalServiceFactory>>,
+    waker_queue: WakerQueue,
+    system_stop: bool,
+    stopping: bool,
+}
+
+impl ServerInner {
+    async fn run(builder: ServerBuilder) -> io::Result<()> {
+        let (mut this, mut mux) = Self::run_sync(builder)?;
+
+        while let Some(cmd) = mux.next().await {
+            this.handle_cmd(cmd).await;
+
+            if this.stopping {
+                break;
             }
-            this.1 = Some(rx);
         }
 
-        match Pin::new(this.1.as_mut().unwrap()).poll(cx) {
-            Poll::Pending => Poll::Pending,
-            Poll::Ready(_) => Poll::Ready(Ok(())),
+        Ok(())
+    }
+
+    fn run_sync(mut builder: ServerBuilder) -> io::Result<(Self, ServerEventMultiplexer)> {
+        // 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()
+            );
+        }
+
+        let sockets = mem::take(&mut builder.sockets)
+            .into_iter()
+            .map(|t| (t.0, t.2))
+            .collect();
+
+        let (waker_queue, worker_handles, accept_handle) = Accept::start(sockets, &builder)?;
+
+        let mux = ServerEventMultiplexer {
+            signal_fut: (builder.listen_os_signals).then(Signals::new),
+            cmd_rx: builder.cmd_rx,
+        };
+
+        let server = ServerInner {
+            waker_queue,
+            accept_handle: Some(accept_handle),
+            worker_handles,
+            worker_config: builder.worker_config,
+            services: builder.factories,
+            system_stop: builder.exit,
+            stopping: false,
+        };
+
+        Ok((server, mux))
+    }
+
+    async fn handle_cmd(&mut self, item: ServerCommand) {
+        match item {
+            ServerCommand::Pause(tx) => {
+                self.waker_queue.wake(WakerInterest::Pause);
+                let _ = tx.send(());
+            }
+
+            ServerCommand::Resume(tx) => {
+                self.waker_queue.wake(WakerInterest::Resume);
+                let _ = tx.send(());
+            }
+
+            ServerCommand::Stop {
+                graceful,
+                completion,
+                force_system_stop,
+            } => {
+                self.stopping = true;
+
+                // Signal accept thread to stop.
+                // Signal is non-blocking; we wait for thread to stop later.
+                self.waker_queue.wake(WakerInterest::Stop);
+
+                // send stop signal to workers
+                let workers_stop = self
+                    .worker_handles
+                    .iter()
+                    .map(|worker| worker.stop(graceful))
+                    .collect::<Vec<_>>();
+
+                if graceful {
+                    // wait for all workers to shut down
+                    let _ = join_all(workers_stop).await;
+                }
+
+                // wait for accept thread stop
+                self.accept_handle
+                    .take()
+                    .unwrap()
+                    .join()
+                    .expect("Accept thread must not panic in any case");
+
+                if let Some(tx) = completion {
+                    let _ = tx.send(());
+                }
+
+                if self.system_stop || force_system_stop {
+                    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),
+                };
+            }
+        }
+    }
+
+    fn map_signal(signal: SignalKind) -> ServerCommand {
+        match signal {
+            SignalKind::Int => {
+                info!("SIGINT received; starting forced shutdown");
+                ServerCommand::Stop {
+                    graceful: false,
+                    completion: None,
+                    force_system_stop: true,
+                }
+            }
+
+            SignalKind::Term => {
+                info!("SIGTERM received; starting graceful shutdown");
+                ServerCommand::Stop {
+                    graceful: true,
+                    completion: None,
+                    force_system_stop: true,
+                }
+            }
+
+            SignalKind::Quit => {
+                info!("SIGQUIT received; starting forced shutdown");
+                ServerCommand::Stop {
+                    graceful: false,
+                    completion: None,
+                    force_system_stop: true,
+                }
+            }
         }
     }
 }
+
+struct ServerEventMultiplexer {
+    cmd_rx: UnboundedReceiver<ServerCommand>,
+    signal_fut: Option<Signals>,
+}
+
+impl Stream for ServerEventMultiplexer {
+    type Item = ServerCommand;
+
+    fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        let this = Pin::into_inner(self);
+
+        if let Some(signal_fut) = &mut this.signal_fut {
+            if let Poll::Ready(signal) = Pin::new(signal_fut).poll(cx) {
+                this.signal_fut = None;
+                return Poll::Ready(Some(ServerInner::map_signal(signal)));
+            }
+        }
+
+        this.cmd_rx.poll_recv(cx)
+    }
+}

actix-server/src/service.rs

@@ -1,16 +1,21 @@
-use std::marker::PhantomData;
-use std::net::SocketAddr;
-use std::task::{Context, Poll};
+use std::{
+    marker::PhantomData,
+    net::SocketAddr,
+    task::{Context, Poll},
+};
 
 use actix_service::{Service, ServiceFactory as BaseServiceFactory};
 use actix_utils::future::{ready, Ready};
 use futures_core::future::LocalBoxFuture;
-use log::error;
+use tracing::error;
 
-use crate::socket::{FromStream, MioStream};
-use crate::worker::WorkerCounterGuard;
+use crate::{
+    socket::{FromStream, MioStream},
+    worker::WorkerCounterGuard,
+};
 
-pub trait ServiceFactory<Stream: FromStream>: Send + Clone + 'static {
+#[doc(hidden)]
+pub trait ServerServiceFactory<Stream: FromStream>: Send + Clone + 'static {
     type Factory: BaseServiceFactory<Stream, Config = ()>;
 
     fn create(&self) -> Self::Factory;
@@ -72,15 +77,15 @@ where
                 });
                 Ok(())
             }
-            Err(e) => {
-                error!("Can not convert to an async tcp stream: {}", e);
+            Err(err) => {
+                error!("can not convert to an async TCP stream: {err}");
                 Err(())
             }
         })
     }
 }
 
-pub(crate) struct StreamNewService<F: ServiceFactory<Io>, Io: FromStream> {
+pub(crate) struct StreamNewService<F: ServerServiceFactory<Io>, Io: FromStream> {
     name: String,
     inner: F,
     token: usize,
@@ -90,7 +95,7 @@ pub(crate) struct StreamNewService<F: ServiceFactory<Io>, Io: FromStream> {
 
 impl<F, Io> StreamNewService<F, Io>
 where
-    F: ServiceFactory<Io>,
+    F: ServerServiceFactory<Io>,
     Io: FromStream + Send + 'static,
 {
     pub(crate) fn create(
@@ -111,7 +116,7 @@ where
 
 impl<F, Io> InternalServiceFactory for StreamNewService<F, Io>
 where
-    F: ServiceFactory<Io>,
+    F: ServerServiceFactory<Io>,
     Io: FromStream + Send + 'static,
 {
     fn name(&self, _: usize) -> &str {
@@ -143,7 +148,7 @@ where
     }
 }
 
-impl<F, T, I> ServiceFactory<I> for F
+impl<F, T, I> ServerServiceFactory<I> for F
 where
     F: Fn() -> T + Send + Clone + 'static,
     T: BaseServiceFactory<I, Config = ()>,

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 tracing::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
@@ -52,8 +69,8 @@ impl Signals {
                     unix::signal(*kind)
                         .map(|tokio_sig| (*sig, tokio_sig))
                         .map_err(|e| {
-                            log::error!(
-                                "Can not initialize stream handler for {:?} err: {}",
+                            tracing::error!(
+                                "can not initialize stream handler for {:?} err: {}",
                                 sig,
                                 e
                             )
@@ -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(());
+                if fut.poll_recv(cx).is_ready() {
+                    trace!("{} received", sig);
+                    return Poll::Ready(*sig);
                 }
             }
+
             Poll::Pending
         }
     }

actix-server/src/socket.rs

@@ -1,18 +1,17 @@
 pub(crate) use std::net::{
     SocketAddr as StdSocketAddr, TcpListener as StdTcpListener, ToSocketAddrs,
 };
-
-pub(crate) use mio::net::{TcpListener as MioTcpListener, TcpSocket as MioTcpSocket};
-#[cfg(unix)]
-pub(crate) use {
-    mio::net::UnixListener as MioUnixListener,
-    std::os::unix::net::UnixListener as StdUnixListener,
-};
-
 use std::{fmt, io};
 
 use actix_rt::net::TcpStream;
+pub(crate) use mio::net::TcpListener as MioTcpListener;
 use mio::{event::Source, Interest, Registry, Token};
+#[cfg(unix)]
+pub(crate) use {
+    mio::net::UnixListener as MioUnixListener, std::os::unix::net::UnixListener as StdUnixListener,
+};
+
+use crate::builder::MpTcp;
 
 pub(crate) enum MioListener {
     Tcp(MioTcpListener),
@@ -107,7 +106,7 @@ impl fmt::Debug for MioListener {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
             MioListener::Tcp(ref lst) => write!(f, "{:?}", lst),
-            #[cfg(all(unix))]
+            #[cfg(unix)]
             MioListener::Uds(ref lst) => write!(f, "{:?}", lst),
         }
     }
@@ -127,7 +126,7 @@ pub(crate) enum SocketAddr {
     Unknown,
     Tcp(StdSocketAddr),
     #[cfg(unix)]
-    Uds(mio::net::SocketAddr),
+    Uds(std::os::unix::net::SocketAddr),
 }
 
 impl fmt::Display for SocketAddr {
@@ -159,24 +158,25 @@ pub enum MioStream {
     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 {
+    /// Creates stream from a `mio` stream.
     fn from_mio(sock: MioStream) -> io::Result<Self>;
 }
 
 #[cfg(windows)]
 mod win_impl {
-    use super::*;
-
     use std::os::windows::io::{FromRawSocket, IntoRawSocket};
 
-    // FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
+    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 a in place conversion from mio stream to tokio stream.
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
                     TcpStream::from_std(unsafe { FromRawSocket::from_raw_socket(raw) })
                 }
             }
@@ -186,19 +186,19 @@ mod win_impl {
 
 #[cfg(unix)]
 mod unix_impl {
-    use super::*;
-
     use std::os::unix::io::{FromRawFd, IntoRawFd};
 
     use actix_rt::net::UnixStream;
 
-    // FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
+    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 a in place conversion from mio stream to tokio stream.
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
                     TcpStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
                 }
                 MioStream::Uds(_) => {
@@ -208,14 +208,14 @@ mod unix_impl {
         }
     }
 
-    // FIXME: This is a workaround and we need an efficient way to convert between mio and tokio stream
+    // 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 a in place conversion from mio stream to tokio stream.
+                    // SAFETY: This is an in-place conversion from Mio stream to Tokio stream.
                     UnixStream::from_std(unsafe { FromRawFd::from_raw_fd(raw) })
                 }
             }
@@ -223,6 +223,42 @@ mod unix_impl {
     }
 }
 
+pub(crate) fn create_mio_tcp_listener(
+    addr: StdSocketAddr,
+    backlog: u32,
+    mptcp: &MpTcp,
+) -> io::Result<MioTcpListener> {
+    use socket2::{Domain, Protocol, Socket, Type};
+
+    #[cfg(not(target_os = "linux"))]
+    let protocol = Protocol::TCP;
+    #[cfg(target_os = "linux")]
+    let protocol = if matches!(mptcp, MpTcp::Disabled) {
+        Protocol::TCP
+    } else {
+        Protocol::MPTCP
+    };
+
+    let socket = match Socket::new(Domain::for_address(addr), Type::STREAM, Some(protocol)) {
+        Ok(sock) => sock,
+
+        Err(err) if matches!(mptcp, MpTcp::TcpFallback) => {
+            tracing::warn!("binding socket as MPTCP failed: {err}");
+            tracing::warn!("falling back to TCP");
+            Socket::new(Domain::for_address(addr), Type::STREAM, Some(Protocol::TCP))?
+        }
+
+        Err(err) => return Err(err),
+    };
+
+    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)]
 mod tests {
     use super::*;
@@ -234,11 +270,8 @@ 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, &MpTcp::Disabled).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

@@ -1,24 +1,22 @@
-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, ServerServiceFactory};
 
-/// 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;
 ///
 /// #[actix_rt::main]
 /// async fn main() {
-///     let srv = TestServer::with(|| fn_service(
+///     let srv = TestServer::start(|| fn_service(
 ///         |sock| async move {
 ///             println!("New connection: {:?}", sock);
 ///             Ok::<_, ()>(())
@@ -30,115 +28,128 @@ use crate::{Server, ServerBuilder, ServiceFactory};
 /// ```
 pub struct TestServer;
 
-/// Test server runtime
-pub struct TestServerRuntime {
+/// Test server handle.
+pub struct TestServerHandle {
     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
-    pub fn start<F>(mut factory: F) -> TestServerRuntime
-    where
-        F: FnMut(ServerBuilder) -> ServerBuilder + Send + 'static,
-    {
-        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 system = rx.recv().unwrap();
-
-        TestServerRuntime {
-            system,
-            addr: "127.0.0.1:0".parse().unwrap(),
-            host: "127.0.0.1".to_string(),
-            port: 0,
-        }
+    /// Start new `TestServer` using application factory and default server config.
+    pub fn start(factory: impl ServerServiceFactory<TcpStream>) -> TestServerHandle {
+        Self::start_with_builder(Server::build(), factory)
     }
 
-    /// Start new test server with application factory
-    pub fn with<F: ServiceFactory<TcpStream>>(factory: F) -> TestServerRuntime {
+    /// Start new `TestServer` using application factory and server builder.
+    pub fn start_with_builder(
+        server_builder: ServerBuilder,
+        factory: impl ServerServiceFactory<TcpStream>,
+    ) -> TestServerHandle {
         let (tx, rx) = mpsc::channel();
 
         // run server in separate thread
-        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();
+        let thread_handle = thread::spawn(move || {
+            let lst = net::TcpListener::bind("127.0.0.1:0").unwrap();
+            let local_addr = lst.local_addr().unwrap();
 
-            sys.block_on(async {
-                Server::build()
-                    .listen("test", tcp, factory)
+            System::new().block_on(async {
+                let server = server_builder
+                    .listen("test", lst, 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();
 
-        TestServerRuntime {
+        TestServerHandle {
             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 domain = Domain::for_address(addr);
+        let socket = Socket::new(domain, 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
+impl TestServerHandle {
+    /// 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();
+        drop(self.server_handle.stop(false));
+        self.thread_handle.take().unwrap().join().unwrap().unwrap();
     }
 
-    /// Connect to server, return tokio TcpStream
-    pub fn connect(&self) -> std::io::Result<TcpStream> {
-        TcpStream::from_std(net::TcpStream::connect(self.addr)?)
+    /// Connect to server, returning a Tokio `TcpStream`.
+    pub fn connect(&self) -> io::Result<TcpStream> {
+        let stream = net::TcpStream::connect(self.addr)?;
+        stream.set_nonblocking(true)?;
+        TcpStream::from_std(stream)
     }
 }
 
-impl Drop for TestServerRuntime {
+impl Drop for TestServerHandle {
     fn drop(&mut self) {
         self.stop()
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use actix_service::fn_service;
+
+    use super::*;
+
+    #[tokio::test]
+    async fn connect_in_tokio_runtime() {
+        let srv = TestServer::start(|| fn_service(|_sock| async move { Ok::<_, ()>(()) }));
+        assert!(srv.connect().is_ok());
+    }
+
+    #[actix_rt::test]
+    async fn connect_in_actix_runtime() {
+        let srv = TestServer::start(|| fn_service(|_sock| async move { Ok::<_, ()>(()) }));
+        assert!(srv.connect().is_ok());
+    }
+}

actix-server/src/waker_queue.rs

@@ -78,12 +78,7 @@ pub(crate) enum WakerInterest {
     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
-    /// `WorkerHandleAccept`.
+    /// `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

@@ -1,6 +1,7 @@
 use std::{
     future::Future,
-    mem,
+    io, mem,
+    num::NonZeroUsize,
     pin::Pin,
     rc::Rc,
     sync::{
@@ -14,21 +15,22 @@ use std::{
 use actix_rt::{
     spawn,
     time::{sleep, Instant, Sleep},
-    Arbiter,
+    Arbiter, ArbiterHandle, System,
 };
 use futures_core::{future::LocalBoxFuture, ready};
-use log::{error, info, trace};
 use tokio::sync::{
     mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender},
     oneshot,
 };
+use tracing::{error, info, trace};
 
-use crate::join_all;
-use crate::service::{BoxedServerService, InternalServiceFactory};
-use crate::socket::MioStream;
-use crate::waker_queue::{WakerInterest, WakerQueue};
+use crate::{
+    service::{BoxedServerService, InternalServiceFactory},
+    socket::MioStream,
+    waker_queue::{WakerInterest, WakerQueue},
+};
 
-/// Stop worker message. Returns `true` on successful graceful shutdown.
+/// 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,
@@ -41,19 +43,20 @@ pub(crate) struct Conn {
     pub token: usize,
 }
 
+/// Create accept and server worker handles.
 fn handle_pair(
     idx: usize,
-    tx1: UnboundedSender<Conn>,
-    tx2: UnboundedSender<Stop>,
+    conn_tx: UnboundedSender<Conn>,
+    stop_tx: UnboundedSender<Stop>,
     counter: Counter,
 ) -> (WorkerHandleAccept, WorkerHandleServer) {
     let accept = WorkerHandleAccept {
         idx,
-        tx: tx1,
+        conn_tx,
         counter,
     };
 
-    let server = WorkerHandleServer { idx, tx: tx2 };
+    let server = WorkerHandleServer { idx, stop_tx };
 
     (accept, server)
 }
@@ -149,13 +152,13 @@ impl Drop for WorkerCounterGuard {
     }
 }
 
-/// Handle to worker that can send connection message to worker and share the
-/// availability of worker to other thread.
+/// 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,
-    tx: UnboundedSender<Conn>,
+    conn_tx: UnboundedSender<Conn>,
     counter: Counter,
 }
 
@@ -166,8 +169,8 @@ impl WorkerHandleAccept {
     }
 
     #[inline(always)]
-    pub(crate) fn send(&self, msg: Conn) -> Result<(), Conn> {
-        self.tx.send(msg).map_err(|msg| msg.0)
+    pub(crate) fn send(&self, conn: Conn) -> Result<(), Conn> {
+        self.conn_tx.send(conn).map_err(|msg| msg.0)
     }
 
     #[inline(always)]
@@ -181,14 +184,14 @@ impl WorkerHandleAccept {
 /// Held by [ServerBuilder](crate::builder::ServerBuilder).
 #[derive(Debug)]
 pub(crate) struct WorkerHandleServer {
-    idx: usize,
-    tx: UnboundedSender<Stop>,
+    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.tx.send(Stop { graceful, tx });
+        let _ = self.stop_tx.send(Stop { graceful, tx });
         rx
     }
 }
@@ -199,8 +202,8 @@ impl WorkerHandleServer {
 pub(crate) struct ServerWorker {
     // UnboundedReceiver<Conn> should always be the first field.
     // It must be dropped as soon as ServerWorker dropping.
-    rx: UnboundedReceiver<Conn>,
-    rx2: UnboundedReceiver<Stop>,
+    conn_rx: UnboundedReceiver<Conn>,
+    stop_rx: UnboundedReceiver<Stop>,
     counter: WorkerCounter,
     services: Box<[WorkerService]>,
     factories: Box<[Box<dyn InternalServiceFactory>]>,
@@ -209,7 +212,7 @@ pub(crate) struct ServerWorker {
 }
 
 struct WorkerService {
-    factory: usize,
+    factory_idx: usize,
     status: WorkerServiceStatus,
     service: BoxedServerService,
 }
@@ -221,7 +224,7 @@ impl WorkerService {
     }
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum WorkerServiceStatus {
     Available,
     Unavailable,
@@ -231,8 +234,14 @@ 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,
@@ -241,8 +250,11 @@ pub(crate) struct ServerWorkerConfig {
 
 impl Default for ServerWorkerConfig {
     fn default() -> Self {
-        // 512 is the default max blocking thread count of tokio runtime.
-        let max_blocking_threads = std::cmp::max(512 / num_cpus::get(), 1);
+        let parallelism = std::thread::available_parallelism().map_or(2, NonZeroUsize::get);
+
+        // 512 is the default max blocking thread count of a Tokio runtime.
+        let max_blocking_threads = std::cmp::max(512 / parallelism, 1);
+
         Self {
             shutdown_timeout: Duration::from_secs(30),
             max_blocking_threads,
@@ -271,77 +283,204 @@ impl ServerWorker {
         factories: Vec<Box<dyn InternalServiceFactory>>,
         waker_queue: WakerQueue,
         config: ServerWorkerConfig,
-    ) -> (WorkerHandleAccept, WorkerHandleServer) {
-        let (tx1, rx) = unbounded_channel();
-        let (tx2, rx2) = unbounded_channel();
+    ) -> io::Result<(WorkerHandleAccept, WorkerHandleServer)> {
+        trace!("starting server worker {}", idx);
+
+        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());
 
-        let counter_clone = counter.clone();
-        // every worker runs in it's own arbiter.
+        // 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 {
-            let fut = factories
-                .iter()
-                .enumerate()
-                .map(|(idx, factory)| {
-                    let fut = factory.create();
-                    async move { fut.await.map(|(t, s)| (idx, t, s)) }
-                })
-                .collect::<Vec<_>>();
 
-            // a second spawn to run !Send future tasks.
-            spawn(async move {
-                let res = join_all(fut)
-                    .await
-                    .into_iter()
-                    .collect::<Result<Vec<_>, _>>();
-                let services = match res {
-                    Ok(res) => res
-                        .into_iter()
-                        .fold(Vec::new(), |mut services, (factory, token, service)| {
-                            assert_eq!(token, services.len());
-                            services.push(WorkerService {
-                                factory,
-                                service,
-                                status: WorkerServiceStatus::Unavailable,
+        match (actix_system, tokio_handle) {
+            (None, None) => {
+                panic!("No runtime detected. Start a Tokio (or Actix) runtime.");
+            }
+
+            // 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();
                             });
-                            services
-                        })
-                        .into_boxed_slice(),
-                    Err(e) => {
-                        error!("Can not start worker: {:?}", e);
-                        Arbiter::current().stop();
-                        return;
-                    }
+
+                            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()
                 };
 
-                // a third spawn to make sure ServerWorker runs as non boxed future.
-                spawn(ServerWorker {
-                    rx,
-                    rx2,
-                    services,
-                    counter: WorkerCounter::new(idx, waker_queue, counter_clone),
-                    factories: factories.into_boxed_slice(),
-                    state: Default::default(),
-                    shutdown_timeout: config.shutdown_timeout,
-                });
-            });
-        });
+                #[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()
+                    })
+                };
 
-        handle_pair(idx, tx1, tx2, counter)
+                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;
+                                }
+                            }
+                        }
+
+                        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));
+        trace!("service {:?} failed, restarting", factory.name(idx));
         self.services[idx].status = WorkerServiceStatus::Restarting;
         self.state = WorkerState::Restarting(Restart {
             factory_id,
@@ -373,8 +512,8 @@ impl ServerWorker {
                     Poll::Ready(Ok(_)) => {
                         if srv.status == WorkerServiceStatus::Unavailable {
                             trace!(
-                                "Service {:?} is available",
-                                self.factories[srv.factory].name(idx)
+                                "service {:?} is available",
+                                self.factories[srv.factory_idx].name(idx)
                             );
                             srv.status = WorkerServiceStatus::Available;
                         }
@@ -384,19 +523,19 @@ impl ServerWorker {
 
                         if srv.status == WorkerServiceStatus::Available {
                             trace!(
-                                "Service {:?} is unavailable",
-                                self.factories[srv.factory].name(idx)
+                                "service {:?} is unavailable",
+                                self.factories[srv.factory_idx].name(idx)
                             );
                             srv.status = WorkerServiceStatus::Unavailable;
                         }
                     }
                     Poll::Ready(Err(_)) => {
                         error!(
-                            "Service {:?} readiness check returned error, restarting",
-                            self.factories[srv.factory].name(idx)
+                            "service {:?} readiness check returned error, restarting",
+                            self.factories[srv.factory_idx].name(idx)
                         );
                         srv.status = WorkerServiceStatus::Failed;
-                        return Err((idx, srv.factory));
+                        return Err((idx, srv.factory_idx));
                     }
                 }
             }
@@ -419,13 +558,15 @@ struct Restart {
     fut: LocalBoxFuture<'static, Result<(usize, BoxedServerService), ()>>,
 }
 
-// Shutdown keep states necessary for server shutdown:
-// Sleep for interval check the shutdown progress.
-// Instant for the start time of shutdown.
-// Sender for send back the shutdown outcome(force/grace) to StopCommand caller.
+/// 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>,
 }
 
@@ -437,8 +578,7 @@ impl Default for WorkerState {
 
 impl Drop for ServerWorker {
     fn drop(&mut self) {
-        // Stop the Arbiter ServerWorker runs on on drop.
-        Arbiter::current().stop();
+        Arbiter::try_current().as_ref().map(ArbiterHandle::stop);
     }
 }
 
@@ -449,15 +589,14 @@ impl Future for ServerWorker {
         let this = self.as_mut().get_mut();
 
         // `StopWorker` message handler
-        if let Poll::Ready(Some(Stop { graceful, tx })) = Pin::new(&mut this.rx2).poll_recv(cx)
-        {
+        if let Poll::Ready(Some(Stop { graceful, tx })) = this.stop_rx.poll_recv(cx) {
             let num = this.counter.total();
             if num == 0 {
-                info!("Shutting down worker, 0 connections");
+                info!("shutting down idle worker");
                 let _ = tx.send(true);
                 return Poll::Ready(());
             } else if graceful {
-                info!("Graceful worker shutdown, {} connections", num);
+                info!("graceful worker shutdown; finishing {} connections", num);
                 this.shutdown(false);
 
                 this.state = WorkerState::Shutdown(Shutdown {
@@ -466,7 +605,7 @@ impl Future for ServerWorker {
                     tx,
                 });
             } else {
-                info!("Force shutdown worker, {} connections", num);
+                info!("force shutdown worker, closing {} connections", num);
                 this.shutdown(true);
 
                 let _ = tx.send(false);
@@ -486,12 +625,13 @@ impl Future for ServerWorker {
                     self.poll(cx)
                 }
             },
+
             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(|_| {
+                let (token_new, service) =
+                    ready!(restart.fut.as_mut().poll(cx)).unwrap_or_else(|_| {
                         panic!(
                             "Can not restart {:?} service",
                             this.factories[factory_id].name(token)
@@ -501,7 +641,7 @@ impl Future for ServerWorker {
                 assert_eq!(token, token_new);
 
                 trace!(
-                    "Service {:?} has been restarted",
+                    "service {:?} has been restarted",
                     this.factories[factory_id].name(token)
                 );
 
@@ -510,35 +650,47 @@ impl Future for ServerWorker {
 
                 self.poll(cx)
             }
+
             WorkerState::Shutdown(ref mut shutdown) => {
-                // Wait for 1 second.
+                // drop all pending connections in rx channel.
+                while let Poll::Ready(Some(conn)) = 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));
+                }
+
+                // wait for 1 second
                 ready!(shutdown.timer.as_mut().poll(cx));
 
                 if this.counter.total() == 0 {
-                    // Graceful shutdown.
+                    // graceful shutdown
                     if let WorkerState::Shutdown(shutdown) = mem::take(&mut this.state) {
                         let _ = shutdown.tx.send(true);
                     }
+
                     Poll::Ready(())
                 } else if shutdown.start_from.elapsed() >= this.shutdown_timeout {
-                    // Timeout forceful shutdown.
+                    // 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.
+                    // 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 this.check_readiness(cx) {
                     Ok(true) => {}
                     Ok(false) => {
-                        trace!("Worker is unavailable");
+                        trace!("worker is unavailable");
                         this.state = WorkerState::Unavailable;
                         return self.poll(cx);
                     }
@@ -549,10 +701,13 @@ impl Future for ServerWorker {
                 }
 
                 // handle incoming io stream
-                match ready!(Pin::new(&mut this.rx).poll_recv(cx)) {
+                match ready!(this.conn_rx.poll_recv(cx)) {
                     Some(msg) => {
                         let guard = this.counter.guard();
-                        let _ = this.services[msg.token].service.call((guard, msg.io));
+                        let _ = this.services[msg.token]
+                            .service
+                            .call((guard, msg.io))
+                            .into_inner();
                     }
                     None => return Poll::Ready(()),
                 };
@@ -560,3 +715,17 @@ impl Future for ServerWorker {
         }
     }
 }
+
+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/server.rs

@@ -1,20 +1,21 @@
-use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::{mpsc, Arc};
-use std::{net, thread, time::Duration};
+#![allow(clippy::let_underscore_future, missing_docs)]
+
+use std::{
+    net,
+    sync::{
+        atomic::{AtomicUsize, Ordering},
+        mpsc, Arc,
+    },
+    thread,
+    time::Duration,
+};
 
 use actix_rt::{net::TcpStream, time::sleep};
-use actix_server::Server;
+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]
@@ -23,52 +24,96 @@ 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()
-        }));
+                .shutdown_timeout(3600)
+                .bind("test", addr, move || {
+                    fn_service(|_| async { Ok::<_, ()>(()) })
+                })?
+                .run();
 
-        let _ = tx.send((srv, actix_rt::System::current()));
-        let _ = sys.run();
+            tx.send(srv.handle()).unwrap();
+            srv.await
+        })
     });
-    let (_, sys) = rx.recv().unwrap();
+
+    let srv = rx.recv().unwrap();
 
     thread::sleep(Duration::from_millis(500));
-    assert!(net::TcpStream::connect(addr).is_ok());
-    sys.stop();
-    let _ = h.join();
+
+    net::TcpStream::connect(addr).unwrap();
+
+    let _ = srv.stop(true);
+    h.join().unwrap().unwrap();
 }
 
 #[test]
 fn test_listen() {
     let addr = unused_addr();
     let (tx, rx) = mpsc::channel();
+    let lst = net::TcpListener::bind(addr).unwrap();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new();
-        let lst = net::TcpListener::bind(addr).unwrap();
-        sys.block_on(async {
-            Server::build()
-                .disable_signals()
+        actix_rt::System::new().block_on(async {
+            let srv = Server::build()
                 .workers(1)
-                .listen("test", lst, move || fn_service(|_| ok::<_, ()>(())))
-                .unwrap()
+                .disable_signals()
+                .shutdown_timeout(3600)
+                .listen("test", lst, move || {
+                    fn_service(|_| async { Ok::<_, ()>(()) })
+                })?
                 .run();
-            let _ = tx.send(actix_rt::System::current());
-        });
-        let _ = sys.run();
+
+            tx.send(srv.handle()).unwrap();
+            srv.await
+        })
     });
-    let sys = rx.recv().unwrap();
+
+    let srv = rx.recv().unwrap();
+
+    thread::sleep(Duration::from_millis(500));
+
+    net::TcpStream::connect(addr).unwrap();
+
+    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());
-    sys.stop();
-    let _ = h.join();
+
+    let _ = srv.stop(true);
+    h.join().unwrap().unwrap();
 }
 
 #[test]
@@ -84,9 +129,8 @@ fn test_start() {
     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 || {
@@ -95,13 +139,13 @@ 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();
@@ -134,20 +178,19 @@ fn test_start() {
 
     // stop
     let _ = srv.stop(false);
-    thread::sleep(Duration::from_millis(100));
-    assert!(net::TcpStream::connect(addr).is_err());
-
-    thread::sleep(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.
+    // 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
+    // The limit test on the other hand is only for concurrent TCP stream limiting a work
     // thread accept.
 
     use tokio::io::AsyncWriteExt;
@@ -162,11 +205,11 @@ async fn test_max_concurrent_connections() {
 
     let h = thread::spawn(move || {
         actix_rt::System::new().block_on(async {
-            let server = Server::build()
+            let srv = Server::build()
                 // Set a relative higher backlog.
                 .backlog(12)
                 // max connection for a worker is 3.
-                .maxconn(max_conn)
+                .max_concurrent_connections(max_conn)
                 .workers(1)
                 .disable_signals()
                 .bind("test", addr, move || {
@@ -183,9 +226,9 @@ async fn test_max_concurrent_connections() {
                 })?
                 .run();
 
-            let _ = tx.send((server.clone(), actix_rt::System::current()));
+            let _ = tx.send((srv.handle(), actix_rt::System::current()));
 
-            server.await
+            srv.await
         })
     });
 
@@ -209,11 +252,11 @@ async fn test_max_concurrent_connections() {
     }
 
     srv.stop(false).await;
-
     sys.stop();
-    let _ = h.join().unwrap();
+    h.join().unwrap().unwrap();
 }
 
+// TODO: race-y failures detected due to integer underflow when calling Counter::total
 #[actix_rt::test]
 async fn test_service_restart() {
     use std::task::{Context, Poll};
@@ -257,7 +300,7 @@ async fn test_service_restart() {
     let h = thread::spawn(move || {
         let num = num.clone();
         actix_rt::System::new().block_on(async {
-            let server = Server::build()
+            let srv = Server::build()
                 .backlog(1)
                 .disable_signals()
                 .bind("addr1", addr1, move || {
@@ -266,25 +309,23 @@ async fn test_service_restart() {
                         let num = num.clone();
                         async move { Ok::<_, ()>(TestService(num)) }
                     })
-                })
-                .unwrap()
+                })?
                 .bind("addr2", addr2, move || {
                     let num2 = num2.clone();
                     fn_factory(move || {
                         let num2 = num2.clone();
                         async move { Ok::<_, ()>(TestService(num2)) }
                     })
-                })
-                .unwrap()
+                })?
                 .workers(1)
                 .run();
 
-            let _ = tx.send((server.clone(), actix_rt::System::current()));
-            server.await
+            let _ = tx.send(srv.handle());
+            srv.await
         })
     });
 
-    let (server, sys) = rx.recv().unwrap();
+    let srv = rx.recv().unwrap();
 
     for _ in 0..5 {
         TcpStream::connect(addr1)
@@ -306,12 +347,11 @@ async fn test_service_restart() {
     assert!(num_clone.load(Ordering::SeqCst) > 5);
     assert!(num2_clone.load(Ordering::SeqCst) > 5);
 
-    sys.stop();
-    let _ = server.stop(false);
-    let _ = h.join().unwrap();
+    let _ = srv.stop(false);
+    h.join().unwrap().unwrap();
 }
 
-#[ignore]
+#[ignore] // non-deterministic on CI
 #[actix_rt::test]
 async fn worker_restart() {
     use actix_service::{Service, ServiceFactory};
@@ -378,19 +418,19 @@ async fn worker_restart() {
     let h = thread::spawn(move || {
         let counter = counter.clone();
         actix_rt::System::new().block_on(async {
-            let server = Server::build()
+            let srv = Server::build()
                 .disable_signals()
-                .bind("addr", addr, move || TestServiceFactory(counter.clone()))
-                .unwrap()
+                .bind("addr", addr, move || TestServiceFactory(counter.clone()))?
                 .workers(2)
                 .run();
 
-            let _ = tx.send((server.clone(), actix_rt::System::current()));
-            server.await
+            let _ = tx.send(srv.handle());
+
+            srv.await
         })
     });
 
-    let (server, sys) = rx.recv().unwrap();
+    let srv = rx.recv().unwrap();
 
     sleep(Duration::from_secs(3)).await;
 
@@ -447,7 +487,51 @@ async fn worker_restart() {
     assert_eq!("3", id);
     stream.shutdown().await.unwrap();
 
-    sys.stop();
-    let _ = server.stop(false);
-    let _ = h.join().unwrap();
+    let _ = srv.stop(false);
+    h.join().unwrap().unwrap();
+}
+
+#[test]
+fn no_runtime_on_init() {
+    use std::{thread::sleep, time::Duration};
+
+    let addr = unused_addr();
+    let counter = Arc::new(AtomicUsize::new(0));
+
+    let mut srv = Server::build()
+        .workers(2)
+        .disable_signals()
+        .bind("test", addr, {
+            let counter = counter.clone();
+            move || {
+                counter.fetch_add(1, Ordering::SeqCst);
+                fn_service(|_| async { Ok::<_, ()>(()) })
+            }
+        })
+        .unwrap()
+        .run();
+
+    fn is_send<T: Send>(_: &T) {}
+    is_send(&srv);
+    is_send(&srv.handle());
+
+    sleep(Duration::from_millis(1_000));
+    assert_eq!(counter.load(Ordering::SeqCst), 0);
+
+    let rt = tokio::runtime::Builder::new_current_thread()
+        .enable_all()
+        .build()
+        .unwrap();
+
+    rt.block_on(async move {
+        let _ = futures_util::poll!(&mut srv);
+
+        // available after the first poll
+        sleep(Duration::from_millis(500));
+        assert_eq!(counter.load(Ordering::SeqCst), 2);
+
+        let _ = srv.handle().stop(true);
+        srv.await
+    })
+    .unwrap();
 }

actix-server/tests/testing_server.rs

@@ -0,0 +1,77 @@
+#![allow(missing_docs)]
+
+use std::net;
+
+use actix_rt::net::TcpStream;
+use actix_server::{Server, TestServer};
+use actix_service::fn_service;
+use bytes::BytesMut;
+use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
+
+macro_rules! await_timeout_ms {
+    ($fut:expr, $limit:expr) => {
+        ::actix_rt::time::timeout(::std::time::Duration::from_millis($limit), $fut)
+            .await
+            .unwrap()
+            .unwrap();
+    };
+}
+
+#[tokio::test]
+async fn testing_server_echo() {
+    let srv = TestServer::start(|| {
+        fn_service(move |mut stream: TcpStream| async move {
+            let mut size = 0;
+            let mut buf = BytesMut::new();
+
+            match stream.read_buf(&mut buf).await {
+                Ok(0) => return Err(()),
+
+                Ok(bytes_read) => {
+                    stream.write_all(&buf[size..]).await.unwrap();
+                    size += bytes_read;
+                }
+
+                Err(_) => return Err(()),
+            }
+
+            Ok((buf.freeze(), size))
+        })
+    });
+
+    let mut conn = srv.connect().unwrap();
+
+    await_timeout_ms!(conn.write_all(b"test"), 200);
+
+    let mut buf = Vec::new();
+    await_timeout_ms!(conn.read_to_end(&mut buf), 200);
+
+    assert_eq!(&buf, b"test".as_ref());
+}
+
+#[tokio::test]
+async fn new_with_builder() {
+    let alt_addr = TestServer::unused_addr();
+
+    let srv = TestServer::start_with_builder(
+        Server::build()
+            .bind("alt", alt_addr, || {
+                fn_service(|_| async { Ok::<_, ()>(()) })
+            })
+            .unwrap(),
+        || {
+            fn_service(|mut sock: TcpStream| async move {
+                let mut buf = [0u8; 16];
+                sock.read_exact(&mut buf).await
+            })
+        },
+    );
+
+    // connect to test server
+    srv.connect().unwrap();
+
+    // connect to alt service defined in custom ServerBuilder
+    let stream = net::TcpStream::connect(alt_addr).unwrap();
+    stream.set_nonblocking(true).unwrap();
+    TcpStream::from_std(stream).unwrap();
+}

actix-service/CHANGES.md

@@ -1,280 +1,193 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
+## Unreleased
 
+## 2.0.3
 
-## 2.0.0 - 2021-04-16
-* Removed pipeline and related structs/functions. [#335]
+- Minimum supported Rust version (MSRV) is now 1.71.
+
+## 2.0.2
+
+- Service types can now be `Send` and `'static` regardless of request, response, and config types, etc. [#397]
+
+[#397]: https://github.com/actix/actix-net/pull/397
+
+## 2.0.1
+
+- Documentation fix. [#388]
+
+[#388]: https://github.com/actix/actix-net/pull/388
+
+## 2.0.0
+
+- Removed pipeline and related structs/functions. [#335]
 
 [#335]: https://github.com/actix/actix-net/pull/335
 
+## 2.0.0-beta.5
 
-## 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]
+- Add default `Service` trait impl for `Rc<S: Service>` and `&S: Service`. [#288]
+- Add `boxed::rc_service` function for constructing `boxed::RcService` type [#290]
 
 [#288]: https://github.com/actix/actix-net/pull/288
 [#290]: https://github.com/actix/actix-net/pull/290
 
+## 2.0.0-beta.4
 
-## 2.0.0-beta.4 - 2021-02-04
-* `Service::poll_ready` and `Service::call` receive `&self`. [#247]
-* `apply_fn` and `apply_fn_factory` now receive `Fn(Req, &Service)` function type. [#247]
-* `apply_cfg` and `apply_cfg_factory` now receive `Fn(Req, &Service)` function type. [#247]
-* `fn_service` and friends now receive `Fn(Req)` function type. [#247]
+- `Service::poll_ready` and `Service::call` receive `&self`. [#247]
+- `apply_fn` and `apply_fn_factory` now receive `Fn(Req, &Service)` function type. [#247]
+- `apply_cfg` and `apply_cfg_factory` now receive `Fn(Req, &Service)` function type. [#247]
+- `fn_service` and friends now receive `Fn(Req)` function type. [#247]
 
 [#247]: https://github.com/actix/actix-net/pull/247
 
+## 2.0.0-beta.3
 
-## 2.0.0-beta.3 - 2021-01-09
-* The `forward_ready!` macro converts errors. [#246]
+- The `forward_ready!` macro converts errors. [#246]
 
 [#246]: https://github.com/actix/actix-net/pull/246
 
+## 2.0.0-beta.2
 
-## 2.0.0-beta.2 - 2021-01-03
-* Remove redundant type parameter from `map_config`.
+- Remove redundant type parameter from `map_config`.
 
+## 2.0.0-beta.1
 
-## 2.0.0-beta.1 - 2020-12-28
-* `Service`, other traits, and many type signatures now take the the request type as a type
-  parameter instead of an associated type. [#232]
-* Add `always_ready!` and `forward_ready!` macros. [#233]
-* Crate is now `no_std`. [#233]
-* Migrate pin projections to `pin-project-lite`. [#233]
-* Remove `AndThenApplyFn` and Pipeline `and_then_apply_fn`. Use the
-  `.and_then(apply_fn(...))` construction. [#233]
-* Move non-vital methods to `ServiceExt` and `ServiceFactoryExt` extension traits. [#235]
+- `Service`, other traits, and many type signatures now take the the request type as a type parameter instead of an associated type. [#232]
+- Add `always_ready!` and `forward_ready!` macros. [#233]
+- Crate is now `no_std`. [#233]
+- Migrate pin projections to `pin-project-lite`. [#233]
+- Remove `AndThenApplyFn` and Pipeline `and_then_apply_fn`. Use the `.and_then(apply_fn(...))` construction. [#233]
+- Move non-vital methods to `ServiceExt` and `ServiceFactoryExt` extension traits. [#235]
 
 [#232]: https://github.com/actix/actix-net/pull/232
 [#233]: https://github.com/actix/actix-net/pull/233
 [#235]: https://github.com/actix/actix-net/pull/235
 
+## 1.0.6
 
-## 1.0.6 - 2020-08-09
+- 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.
 
-### Fixed
+## 1.0.5
 
-* 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.
+- Fixed unsoundness in .and_then()/.then() service combinators.
 
-## [1.0.5] - 2020-01-16
+## 1.0.4
 
-### Fixed
+- Revert 1.0.3 change
 
-* Fixed unsoundness in .and_then()/.then() service combinators
+## 1.0.3
 
-## [1.0.4] - 2020-01-15
+- Fixed unsoundness in `AndThenService` impl.
 
-### Fixed
+## 1.0.2
 
-* Revert 1.0.3 change
+- Add `into_service` helper function.
 
-## [1.0.3] - 2020-01-15
+## 1.0.1
 
-### Fixed
+- `map_config()` and `unit_config()` now accept `IntoServiceFactory` type.
 
-* Fixed unsoundness in `AndThenService` impl
+## 1.0.0
 
-## [1.0.2] - 2020-01-08
+- Add Clone impl for Apply service
 
-### Added
+## 1.0.0-alpha.4
 
-* Add `into_service` helper function
+- 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
 
-## [1.0.1] - 2019-12-22
+- 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
 
-### Changed
+## 1.0.0-alpha.2
 
-* `map_config()` and `unit_config()` accepts `IntoServiceFactory` type
+- Use owned config value for service factory
+- Renamed BoxedNewService/BoxedService to BoxServiceFactory/BoxService
 
+## 1.0.0-alpha.1
 
-## [1.0.0] - 2019-12-11
+- Migrated to `std::future`
+- `NewService` renamed to `ServiceFactory`
+- Added `pipeline` and `pipeline_factory` function
 
-### Added
+## 0.4.2
 
-* Add Clone impl for Apply service
+- Check service readiness for `new_apply_cfg` combinator
 
+## 0.4.1
 
-## [1.0.0-alpha.4] - 2019-12-08
+- Add `new_apply_cfg` function
 
-### Changed
+## 0.4.0
 
-* Renamed `service_fn` to `fn_service`
+- Add `NewService::map_config` and `NewService::unit_config` combinators.
+- Use associated type for `NewService` config.
+- Change `apply_cfg` function.
+- Renamed helper functions.
 
-* Renamed `factory_fn` to `fn_factory`
+## 0.3.6
 
-* Renamed `factory_fn_cfg` to `fn_factory_with_config`
+- Poll boxed service call result immediately
 
+## 0.3.5
 
-## [1.0.0-alpha.3] - 2019-12-06
+- Add `impl<S: Service> Service for Rc<RefCell<S>>`.
 
-### Changed
+## 0.3.4
 
-* Add missing Clone impls
+- Add `Transform::from_err()` combinator
+- Add `apply_fn` helper
+- Add `apply_fn_factory` helper
+- Add `apply_transform` helper
+- Add `apply_cfg` helper
 
-* Restore `Transform::map_init_err()` combinator
+## 0.3.3
 
-* Restore `Service/Factory::apply_fn()` in form of `Pipeline/Factory::and_then_apply_fn()`
+- Add `ApplyTransform` new service for transform and new service.
+- Add `NewService::apply_cfg()` combinator, allows to use nested `NewService` with different config parameter.
+- Revert IntoFuture change
 
-* Optimize service combinators and futures memory layout
+## 0.3.2
 
+- Change `NewService::Future` and `Transform::Future` to the `IntoFuture` trait.
+- Export `AndThenTransform` type
 
-## [1.0.0-alpha.2] - 2019-12-02
+## 0.3.1
 
-### Changed
+- Simplify Transform trait
 
-* Use owned config value for service factory
+## 0.3.0
 
-* Renamed BoxedNewService/BoxedService to BoxServiceFactory/BoxService
+- Added boxed NewService and Service.
+- Added `Config` parameter to `NewService` trait.
+- Added `Config` parameter to `NewTransform` trait.
 
+## 0.2.2
 
-## [1.0.0-alpha.1] - 2019-11-25
+- Added `NewService` impl for `Rc<S> where S: NewService`
+- Added `NewService` impl for `Arc<S> where S: NewService`
 
-### Changed
+## 0.2.1
 
-* Migraded to `std::future`
+- Generalize `.apply` combinator with Transform trait
 
-* `NewService` renamed to `ServiceFactory`
-
-* Added `pipeline` and `pipeline_factory` function
-
-
-## [0.4.2] - 2019-08-27
-
-### Fixed
-
-* Check service readiness for `new_apply_cfg` combinator
-
-
-## [0.4.1] - 2019-06-06
-
-### Added
-
-* 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
-
-
-## [0.3.6] - 2019-04-07
-
-### Changed
-
-* Poll boxed service call result immediately
-
-
-## [0.3.5] - 2019-03-29
-
-### Added
-
-* Add `impl<S: Service> Service for Rc<RefCell<S>>`
-
-
-## [0.3.4] - 2019-03-12
-
-### Added
-
-* 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
-
-* Add `ApplyTransform` new service for transform and new service.
-
-* Add `NewService::apply_cfg()` combinator, allows to use
-  nested `NewService` with different config parameter.
-
-### Changed
-
-* Revert IntoFuture change
-
-
-## [0.3.2] - 2019-03-04
-
-### Changed
-
-* Change `NewService::Future` and `Transform::Future` to the `IntoFuture` trait.
-
-* Export `AndThenTransform` type
-
-
-## [0.3.1] - 2019-03-04
-
-### Changed
-
-* Simplify Transform trait
-
-
-## [0.3.0] - 2019-03-02
-
-## Added
-
-* 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
-
-* 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
-
-* Generalize `.apply` combinator with Transform trait
-
-
-## [0.2.0] - 2019-02-01
-
-### Changed
-
-* Use associated type instead of generic for Service definition.
-
-  * Before:
+## 0.2.0
 
+- Use associated type instead of generic for Service definition.
+  - Before:
     ```rust
     impl Service<Request> for Client {
         type Response = Response;
         // ...
     }
     ```
-  * After:
-
+  - After:
     ```rust
     impl Service for Client {
         type Request = Request;
@@ -283,51 +196,31 @@
     }
     ```
 
+## 0.1.6
 
-## [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>`
 
-### Changed
+## 0.1.5
 
-* Use `FnMut` instead of `Fn` for .apply() and .map() combinators and `FnService` type
+- Make `Out::Error` convertible from `T::Error` for apply combinator
 
-* Change `.apply()` error semantic, new service's error is `From<Self::Error>`
+## 0.1.4
 
+- Use `FnMut` instead of `Fn` for `FnService`
 
-## [0.1.5] - 2019-01-13
+## 0.1.3
 
-### Changed
+- Split service combinators to separate trait
 
-* Make `Out::Error` convertable from `T::Error` for apply combinator
+## 0.1.2
 
+- Release future early for `.and_then()` and `.then()` combinators
 
-## [0.1.4] - 2019-01-11
+## 0.1.1
 
-### Changed
+- Added Service impl for `Box<S: Service>`
 
-* Use `FnMut` instead of `Fn` for `FnService`
+## 0.1.0
 
-
-## [0.1.3] - 2018-12-12
-
-### Changed
-
-* Split service combinators to separate trait
-
-
-## [0.1.2] - 2018-12-12
-
-### Fixed
-
-* Release future early for `.and_then()` and `.then()` combinators
-
-
-## [0.1.1] - 2018-12-09
-
-### Added
-
-* Added Service impl for Box<S: Service>
-
-
-## [0.1.0] - 2018-12-09
-
-* Initial import
+- Initial import

actix-service/Cargo.toml

@@ -1,28 +1,23 @@
 [package]
 name = "actix-service"
-version = "2.0.0"
-authors = [
-    "Nikolay Kim <fafhrd91@gmail.com>",
-    "Rob Ede <robjtede@icloud.com>",
-    "fakeshadow <24548779@qq.com>",
-]
+version = "2.0.3"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>", "Rob Ede <robjtede@icloud.com>"]
 description = "Service trait and combinators for representing asynchronous request/response operations."
 keywords = ["network", "framework", "async", "futures", "service"]
-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"
-
-[lib]
-name = "actix_service"
-path = "src/lib.rs"
+edition.workspace = true
+rust-version.workspace = true
 
 [dependencies]
-futures-core = { version = "0.3.7", default-features = false }
-paste = "1"
+futures-core = { version = "0.3.17", default-features = false }
 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-rt = "2"
+actix-utils = "3"
+futures-util = { version = "0.3.17", default-features = false }
+
+[lints]
+workspace = true

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)](https://docs.rs/actix-service/2.0.0)
+[![Documentation](https://docs.rs/actix-service/badge.svg?version=2.0.3)](https://docs.rs/actix-service/2.0.3)
 [![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/status.svg)](https://deps.rs/crate/actix-service/2.0.0)
+![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-service.svg)
+[![Dependency Status](https://deps.rs/crate/actix-service/2.0.3/status.svg)](https://deps.rs/crate/actix-service/2.0.3)
 ![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 +1,35 @@
+#![allow(missing_docs)]
+
+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

@@ -121,12 +121,7 @@ pub struct AndThenServiceFactory<A, B, Req>
 where
     A: ServiceFactory<Req>,
     A::Config: Clone,
-    B: ServiceFactory<
-        A::Response,
-        Config = A::Config,
-        Error = A::Error,
-        InitError = A::InitError,
-    >,
+    B: ServiceFactory<A::Response, Config = A::Config, Error = A::Error, InitError = A::InitError>,
 {
     inner: Rc<(A, B)>,
     _phantom: PhantomData<Req>,
@@ -136,12 +131,7 @@ impl<A, B, Req> AndThenServiceFactory<A, B, Req>
 where
     A: ServiceFactory<Req>,
     A::Config: Clone,
-    B: ServiceFactory<
-        A::Response,
-        Config = A::Config,
-        Error = A::Error,
-        InitError = A::InitError,
-    >,
+    B: ServiceFactory<A::Response, Config = A::Config, Error = A::Error, InitError = A::InitError>,
 {
     /// Create new `AndThenFactory` combinator
     pub(crate) fn new(a: A, b: B) -> Self {
@@ -156,12 +146,7 @@ impl<A, B, Req> ServiceFactory<Req> for AndThenServiceFactory<A, B, Req>
 where
     A: ServiceFactory<Req>,
     A::Config: Clone,
-    B: ServiceFactory<
-        A::Response,
-        Config = A::Config,
-        Error = A::Error,
-        InitError = A::InitError,
-    >,
+    B: ServiceFactory<A::Response, Config = A::Config, Error = A::Error, InitError = A::InitError>,
 {
     type Response = B::Response;
     type Error = A::Error;
@@ -184,12 +169,7 @@ impl<A, B, Req> Clone for AndThenServiceFactory<A, B, Req>
 where
     A: ServiceFactory<Req>,
     A::Config: Clone,
-    B: ServiceFactory<
-        A::Response,
-        Config = A::Config,
-        Error = A::Error,
-        InitError = A::InitError,
-    >,
+    B: ServiceFactory<A::Response, Config = A::Config, Error = A::Error, InitError = A::InitError>,
 {
     fn clone(&self) -> Self {
         Self {
@@ -334,9 +314,8 @@ mod tests {
     async fn test_new_service() {
         let cnt = Rc::new(Cell::new(0));
         let cnt2 = cnt.clone();
-        let new_srv =
-            pipeline_factory(fn_factory(move || ready(Ok::<_, ()>(Srv1(cnt2.clone())))))
-                .and_then(move || ready(Ok(Srv2(cnt.clone()))));
+        let new_srv = pipeline_factory(fn_factory(move || ready(Ok::<_, ()>(Srv1(cnt2.clone())))))
+            .and_then(move || ready(Ok(Srv2(cnt.clone()))));
 
         let srv = new_srv.new_service(()).await.unwrap();
         let res = srv.call("srv1").await;

actix-service/src/apply.rs

@@ -51,7 +51,7 @@ where
 {
     service: S,
     wrap_fn: F,
-    _phantom: PhantomData<(Req, In, Res, Err)>,
+    _phantom: PhantomData<fn(Req) -> (In, Res, Err)>,
 }
 
 impl<S, F, Fut, Req, In, Res, Err> Apply<S, F, Req, In, Res, Err>
@@ -106,7 +106,7 @@ where
 pub struct ApplyFactory<SF, F, Req, In, Res, Err> {
     factory: SF,
     wrap_fn: F,
-    _phantom: PhantomData<(Req, In, Res, Err)>,
+    _phantom: PhantomData<fn(Req) -> (In, Res, Err)>,
 }
 
 impl<SF, F, Fut, Req, In, Res, Err> ApplyFactory<SF, F, Req, In, Res, Err>
@@ -140,8 +140,7 @@ where
     }
 }
 
-impl<SF, F, Fut, Req, In, Res, Err> ServiceFactory<Req>
-    for ApplyFactory<SF, F, Req, In, Res, Err>
+impl<SF, F, Fut, Req, In, Res, Err> ServiceFactory<Req> for ApplyFactory<SF, F, Req, In, Res, Err>
 where
     SF: ServiceFactory<In, Error = Err>,
     F: Fn(Req, &SF::Service) -> Fut + Clone,
@@ -171,7 +170,7 @@ pin_project! {
         #[pin]
         fut: SF::Future,
         wrap_fn: Option<F>,
-        _phantom: PhantomData<(Req, Res)>,
+        _phantom: PhantomData<fn(Req) -> Res>,
     }
 }
 
@@ -209,15 +208,13 @@ where
 
 #[cfg(test)]
 mod tests {
-    use core::task::Poll;
-
     use futures_util::future::lazy;
 
     use super::*;
     use crate::{
         ok,
         pipeline::{pipeline, pipeline_factory},
-        Ready, Service, ServiceFactory,
+        Ready,
     };
 
     #[derive(Clone)]

actix-service/src/apply_cfg.rs

@@ -198,8 +198,7 @@ pin_project! {
     }
 }
 
-impl<SF, Req, F, Cfg, Fut, S> Future
-    for ApplyConfigServiceFactoryResponse<SF, Req, F, Cfg, Fut, S>
+impl<SF, Req, F, Cfg, Fut, S> Future for ApplyConfigServiceFactoryResponse<SF, Req, F, Cfg, Fut, S>
 where
     SF: ServiceFactory<Req, Config = ()>,
     SF::InitError: From<SF::Error>,

actix-service/src/boxed.rs

@@ -3,36 +3,38 @@
 use alloc::{boxed::Box, rc::Rc};
 use core::{future::Future, pin::Pin};
 
-use paste::paste;
-
 use crate::{Service, ServiceFactory};
 
 /// 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) => {
-        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>>>,
-            >;
+/// Type alias for service trait object using [`Box`].
+pub type BoxService<Req, Res, Err> =
+    Box<dyn Service<Req, Response = Res, Error = Err, Future = BoxFuture<Result<Res, Err>>>>;
 
-            #[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))
-            }
-        }
-    };
+/// Wraps service as a trait object using [`BoxService`].
+pub fn service<S, Req>(service: S) -> BoxService<Req, S::Response, S::Error>
+where
+    S: Service<Req> + 'static,
+    Req: 'static,
+    S::Future: 'static,
+{
+    Box::new(ServiceWrapper::new(service))
 }
 
-service_object!(BoxService, Box, service);
-service_object!(RcService, Rc, rc_service);
+/// Type alias for service trait object using [`Rc`].
+pub type RcService<Req, Res, Err> =
+    Rc<dyn Service<Req, Response = Res, Error = Err, Future = BoxFuture<Result<Res, Err>>>>;
+
+/// Wraps service as a trait object using [`RcService`].
+pub fn rc_service<S, Req>(service: S) -> RcService<Req, S::Response, S::Error>
+where
+    S: Service<Req> + 'static,
+    Req: 'static,
+    S::Future: 'static,
+{
+    Rc::new(ServiceWrapper::new(service))
+}
 
 struct ServiceWrapper<S> {
     inner: S,
@@ -91,8 +93,7 @@ type Inner<C, Req, Res, Err, InitErr> = Box<
     >,
 >;
 
-impl<C, Req, Res, Err, InitErr> ServiceFactory<Req>
-    for BoxServiceFactory<C, Req, Res, Err, InitErr>
+impl<C, Req, Res, Err, InitErr> ServiceFactory<Req> for BoxServiceFactory<C, Req, Res, Err, InitErr>
 where
     Req: 'static,
     Res: 'static,

actix-service/src/ext.rs

@@ -44,7 +44,7 @@ pub trait ServiceExt<Req>: Service<Req> {
     /// 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
+    /// isn't called until call to the first 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.

actix-service/src/fn_service.rs

@@ -3,9 +3,7 @@ use core::{future::Future, marker::PhantomData};
 use crate::{ok, IntoService, IntoServiceFactory, Ready, Service, ServiceFactory};
 
 /// Create `ServiceFactory` for function that can act as a `Service`
-pub fn fn_service<F, Fut, Req, Res, Err, Cfg>(
-    f: F,
-) -> FnServiceFactory<F, Fut, Req, Res, Err, Cfg>
+pub fn fn_service<F, Fut, Req, Res, Err, Cfg>(f: F) -> FnServiceFactory<F, Fut, Req, Res, Err, Cfg>
 where
     F: Fn(Req) -> Fut + Clone,
     Fut: Future<Output = Result<Res, Err>>,
@@ -48,13 +46,11 @@ where
 ///     Ok(())
 /// }
 /// ```
-pub fn fn_factory<F, Cfg, Srv, Req, Fut, Err>(
-    f: F,
-) -> FnServiceNoConfig<F, Cfg, Srv, Req, Fut, Err>
+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)
 }
@@ -105,7 +101,7 @@ where
     Fut: Future<Output = Result<Res, Err>>,
 {
     f: F,
-    _t: PhantomData<Req>,
+    _t: PhantomData<fn(Req)>,
 }
 
 impl<F, Fut, Req, Res, Err> FnService<F, Fut, Req, Res, Err>
@@ -160,7 +156,7 @@ where
     Fut: Future<Output = Result<Res, Err>>,
 {
     f: F,
-    _t: PhantomData<(Req, Cfg)>,
+    _t: PhantomData<fn(Req, Cfg)>,
 }
 
 impl<F, Fut, Req, Res, Err, Cfg> FnServiceFactory<F, Fut, Req, Res, Err, Cfg>
@@ -237,7 +233,7 @@ where
     Srv: Service<Req>,
 {
     f: F,
-    _t: PhantomData<(Fut, Cfg, Req, Srv, Err)>,
+    _t: PhantomData<fn(Cfg, Req) -> (Fut, Srv, Err)>,
 }
 
 impl<F, Fut, Cfg, Srv, Req, Err> FnServiceConfig<F, Fut, Cfg, Srv, Req, Err>
@@ -265,8 +261,7 @@ where
     }
 }
 
-impl<F, Fut, Cfg, Srv, Req, Err> ServiceFactory<Req>
-    for FnServiceConfig<F, Fut, Cfg, Srv, Req, Err>
+impl<F, Fut, Cfg, Srv, Req, Err> ServiceFactory<Req> for FnServiceConfig<F, Fut, Cfg, Srv, Req, Err>
 where
     F: Fn(Cfg) -> Fut,
     Fut: Future<Output = Result<Srv, Err>>,
@@ -293,7 +288,7 @@ where
     Fut: Future<Output = Result<Srv, Err>>,
 {
     f: F,
-    _t: PhantomData<(Cfg, Req)>,
+    _t: PhantomData<fn(Cfg, Req)>,
 }
 
 impl<F, Cfg, Srv, Req, Fut, Err> FnServiceNoConfig<F, Cfg, Srv, Req, Fut, Err>
@@ -356,7 +351,6 @@ mod tests {
     use futures_util::future::lazy;
 
     use super::*;
-    use crate::{ok, Service, ServiceFactory};
 
     #[actix_rt::test]
     async fn test_fn_service() {
@@ -391,4 +385,40 @@ mod tests {
         assert!(res.is_ok());
         assert_eq!(res.unwrap(), ("srv", 1));
     }
+
+    #[actix_rt::test]
+    async fn test_auto_impl_send() {
+        use alloc::rc::Rc;
+
+        use crate::{map_config, ServiceExt, ServiceFactoryExt};
+
+        let srv_1 = fn_service(|_: Rc<u8>| ok::<_, Rc<u8>>(Rc::new(0u8)));
+
+        let fac_1 = fn_factory_with_config(|_: Rc<u8>| {
+            ok::<_, Rc<u8>>(fn_service(|_: Rc<u8>| ok::<_, Rc<u8>>(Rc::new(0u8))))
+        });
+
+        let fac_2 =
+            fn_factory(|| ok::<_, Rc<u8>>(fn_service(|_: Rc<u8>| ok::<_, Rc<u8>>(Rc::new(0u8)))));
+
+        fn is_send<T: Send + Sync + Clone>(_: &T) {}
+
+        is_send(&fac_1);
+        is_send(&map_config(fac_1.clone(), |_: Rc<u8>| Rc::new(0u8)));
+        is_send(&fac_1.clone().map_err(|_| Rc::new(0u8)));
+        is_send(&fac_1.clone().map(|_| Rc::new(0u8)));
+        is_send(&fac_1.clone().map_init_err(|_| Rc::new(0u8)));
+        // `and_then` is always !Send
+        // is_send(&fac_1.clone().and_then(fac_1.clone()));
+        is_send(&fac_1.new_service(Rc::new(0u8)).await.unwrap());
+
+        is_send(&fac_2);
+        is_send(&fac_2.new_service(Rc::new(0u8)).await.unwrap());
+
+        is_send(&srv_1);
+        is_send(&ServiceExt::map(srv_1.clone(), |_| Rc::new(0u8)));
+        is_send(&ServiceExt::map_err(srv_1.clone(), |_| Rc::new(0u8)));
+        // `and_then` is always !Send
+        // is_send(&ServiceExt::and_then(srv_1.clone(), srv_1.clone()));
+    }
 }

actix-service/src/lib.rs

@@ -1,8 +1,6 @@
 //! See [`Service`] docs for information on this crate's foundational trait.
 
 #![no_std]
-#![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")]
@@ -33,15 +31,16 @@ mod then;
 mod transform;
 mod transform_err;
 
-pub use self::apply::{apply_fn, apply_fn_factory};
-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::transform::{apply, ApplyTransform, Transform};
-
 #[allow(unused_imports)]
 use self::ready::{err, ok, ready, Ready};
+pub use self::{
+    apply::{apply_fn, apply_fn_factory},
+    apply_cfg::{apply_cfg, apply_cfg_factory},
+    ext::{ServiceExt, ServiceFactoryExt, TransformExt},
+    fn_service::{fn_factory, fn_factory_with_config, fn_service},
+    map_config::{map_config, unit_config},
+    transform::{apply, ApplyTransform, Transform},
+};
 
 /// An asynchronous operation from `Request` to a `Response`.
 ///
@@ -77,7 +76,7 @@ use self::ready::{err, ok, ready, Ready};
 ///
 ///      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 { ... }
 /// }
 /// ```
 ///

actix-service/src/macros.rs

@@ -1,7 +1,7 @@
 /// An implementation of [`poll_ready`]() that always signals readiness.
 ///
 /// This should only be used for basic leaf services that have no concept of un-readiness.
-/// For wrapper or other serivice types, use [`forward_ready!`] for simple cases or write a bespoke
+/// 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
@@ -25,6 +25,8 @@
 ///     }
 /// }
 /// ```
+///
+/// [`forward_ready!`]: crate::forward_ready
 #[macro_export]
 macro_rules! always_ready {
     () => {

actix-service/src/map.rs

@@ -15,7 +15,7 @@ use super::{Service, ServiceFactory};
 pub struct Map<A, F, Req, Res> {
     service: A,
     f: F,
-    _t: PhantomData<(Req, Res)>,
+    _t: PhantomData<fn(Req) -> Res>,
 }
 
 impl<A, F, Req, Res> Map<A, F, Req, Res> {
@@ -97,7 +97,7 @@ where
 
         match this.fut.poll(cx) {
             Poll::Ready(Ok(resp)) => Poll::Ready(Ok((this.f)(resp))),
-            Poll::Ready(Err(e)) => Poll::Ready(Err(e)),
+            Poll::Ready(Err(err)) => Poll::Ready(Err(err)),
             Poll::Pending => Poll::Pending,
         }
     }
@@ -107,7 +107,7 @@ where
 pub struct MapServiceFactory<A, F, Req, Res> {
     a: A,
     f: F,
-    r: PhantomData<(Res, Req)>,
+    r: PhantomData<fn(Req) -> Res>,
 }
 
 impl<A, F, Req, Res> MapServiceFactory<A, F, Req, Res> {
@@ -202,9 +202,7 @@ mod tests {
     use futures_util::future::lazy;
 
     use super::*;
-    use crate::{
-        ok, IntoServiceFactory, Ready, Service, ServiceExt, ServiceFactory, ServiceFactoryExt,
-    };
+    use crate::{ok, IntoServiceFactory, Ready, ServiceExt, ServiceFactoryExt};
 
     struct Srv;
 

actix-service/src/map_config.rs

@@ -28,7 +28,7 @@ where
 pub struct MapConfig<SF, Req, F, Cfg> {
     factory: SF,
     cfg_mapper: F,
-    e: PhantomData<(Cfg, Req)>,
+    e: PhantomData<fn(Cfg, Req)>,
 }
 
 impl<SF, Req, F, Cfg> MapConfig<SF, Req, F, Cfg> {
@@ -82,7 +82,7 @@ where
 /// `unit_config()` config combinator
 pub struct UnitConfig<SF, Cfg, Req> {
     factory: SF,
-    _phantom: PhantomData<(Cfg, Req)>,
+    _phantom: PhantomData<fn(Cfg, Req)>,
 }
 
 impl<SF, Cfg, Req> UnitConfig<SF, Cfg, Req>

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,
-    _t: PhantomData<(E, Req)>,
+    mapper: F,
+    _t: PhantomData<fn(Req) -> E>,
 }
 
 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)>,
+    e: PhantomData<fn(Req) -> E>,
 }
 
-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
         }
@@ -206,10 +205,7 @@ mod tests {
     use futures_util::future::lazy;
 
     use super::*;
-    use crate::{
-        err, ok, IntoServiceFactory, Ready, Service, ServiceExt, ServiceFactory,
-        ServiceFactoryExt,
-    };
+    use crate::{err, ok, IntoServiceFactory, Ready, ServiceExt, ServiceFactoryExt};
 
     struct Srv;
 

actix-service/src/map_init_err.rs

@@ -13,7 +13,7 @@ use super::ServiceFactory;
 pub struct MapInitErr<A, F, Req, Err> {
     a: A,
     f: F,
-    e: PhantomData<(Req, Err)>,
+    e: PhantomData<fn(Req) -> Err>,
 }
 
 impl<A, F, Req, Err> MapInitErr<A, F, Req, Err>

actix-service/src/pipeline.rs

@@ -6,12 +6,14 @@ use core::{
     task::{Context, Poll},
 };
 
-use crate::and_then::{AndThenService, AndThenServiceFactory};
-use crate::map::{Map, MapServiceFactory};
-use crate::map_err::{MapErr, MapErrServiceFactory};
-use crate::map_init_err::MapInitErr;
-use crate::then::{ThenService, ThenServiceFactory};
-use crate::{IntoService, IntoServiceFactory, Service, ServiceFactory};
+use crate::{
+    and_then::{AndThenService, AndThenServiceFactory},
+    map::{Map, MapServiceFactory},
+    map_err::{MapErr, MapErrServiceFactory},
+    map_init_err::MapInitErr,
+    then::{ThenService, ThenServiceFactory},
+    IntoService, IntoServiceFactory, Service, ServiceFactory,
+};
 
 /// Construct new pipeline with one service in pipeline chain.
 pub(crate) fn pipeline<I, S, Req>(service: I) -> Pipeline<S, Req>
@@ -40,7 +42,7 @@ where
 /// Pipeline service - pipeline allows to compose multiple service into one service.
 pub(crate) struct Pipeline<S, Req> {
     service: S,
-    _phantom: PhantomData<Req>,
+    _phantom: PhantomData<fn(Req)>,
 }
 
 impl<S, Req> Pipeline<S, Req>
@@ -50,7 +52,7 @@ where
     /// 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
+    /// the second service isn't called until call to the first service have
     /// finished. Result of the call to the first service is used as an
     /// input parameter for the second service's call.
     ///
@@ -162,7 +164,7 @@ impl<S: Service<Req>, Req> Service<Req> for Pipeline<S, Req> {
 /// Pipeline factory
 pub(crate) struct PipelineFactory<SF, Req> {
     factory: SF,
-    _phantom: PhantomData<Req>,
+    _phantom: PhantomData<fn(Req)>,
 }
 
 impl<SF, Req> PipelineFactory<SF, Req>
@@ -252,10 +254,7 @@ where
     }
 
     /// Map this service's error to a different error, returning a new service.
-    pub fn map_err<F, E>(
-        self,
-        f: F,
-    ) -> PipelineFactory<MapErrServiceFactory<SF, Req, F, E>, Req>
+    pub fn map_err<F, E>(self, f: F) -> PipelineFactory<MapErrServiceFactory<SF, Req, F, E>, Req>
     where
         Self: Sized,
         F: Fn(SF::Error) -> E + Clone,

actix-service/src/transform.rs

@@ -226,9 +226,9 @@ mod tests {
     use actix_utils::future::{ready, Ready};
 
     use super::*;
-    use crate::Service;
 
     // pseudo-doctest for Transform trait
+    #[allow(unused)]
     pub struct TimeoutTransform {
         timeout: Duration,
     }
@@ -250,6 +250,7 @@ mod tests {
     }
 
     // pseudo-doctest for Transform trait
+    #[allow(unused)]
     pub struct Timeout<S> {
         service: S,
         _timeout: Duration,

actix-service/src/transform_err.rs

@@ -14,7 +14,7 @@ use super::Transform;
 pub struct TransformMapInitErr<T, S, Req, F, E> {
     transform: T,
     mapper: F,
-    _phantom: PhantomData<(S, Req, E)>,
+    _phantom: PhantomData<fn(Req) -> (S, E)>,
 }
 
 impl<T, S, F, E, Req> TransformMapInitErr<T, S, Req, F, E> {

actix-tls/CHANGES.md

@@ -1,91 +1,215 @@
 # Changes
 
-## Unreleased - 2021-xx-xx
+## Unreleased
 
+- Minimum supported Rust version (MSRV) is now 1.71.
 
-## 3.0.0-beta.5 - 2021-03-29
-* 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]
+## 3.4.0
+
+- Add `rustls-0_23`, `rustls-0_23-webpki-roots`, and `rustls-0_23-native-roots` crate features.
+- Minimum supported Rust version (MSRV) is now 1.70.
+
+## 3.3.0
+
+- Add `rustls-0_22` crate feature which excludes any root certificate methods or re-exports.
+
+## 3.2.0
+
+- Support Rustls v0.22.
+- Add `{accept, connect}::rustls_0_22` modules.
+- Add `rustls-0_21-native-roots` and `rustls-0_20-native-roots` crate features which utilize the `rustls-native-certs` crate to enable a `native_roots_cert_store()` functions in each rustls-based `connect` module.
+- Implement `Host` for `http::Uri` (`http` crate version `1`).
+
+## 3.1.1
+
+- Fix `rustls` v0.21 version requirement.
+
+## 3.1.0
+
+- Support Rustls v0.21.
+- Add `{accept, connect}::rustls_0_21` modules.
+- Add `{accept, connect}::rustls_0_20` alias for `{accept, connect}::rustls` modules.
+- Minimum supported Rust version (MSRV) is now 1.65.
+
+## 3.0.4
+
+- Logs emitted now use the `tracing` crate with `log` compatibility. [#451]
+
+[#451]: https://github.com/actix/actix-net/pull/451
+
+## 3.0.3
+
+- No significant changes since `3.0.2`.
+
+## 3.0.2
+
+- Expose `connect::Connection::new`. [#439]
+
+[#439]: https://github.com/actix/actix-net/pull/439
+
+## 3.0.1
+
+- No significant changes since `3.0.0`.
+
+## 3.0.0
+
+- No significant changes since `3.0.0-rc.2`.
+
+## 3.0.0-rc.2
+
+- Re-export `openssl::SslConnectorBuilder` in `connect::openssl::reexports`. [#429]
+
+[#429]: https://github.com/actix/actix-net/pull/429
+
+## 3.0.0-rc.1
+
+### 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
+
+## 3.0.0-beta.9
+
+- 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
+
+- 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
+
+- 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
+
+- 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
+
+- 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 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
 [#297]: https://github.com/actix/actix-net/pull/297
 [#299]: https://github.com/actix/actix-net/pull/299
 
+## 3.0.0-beta.4
 
-## 3.0.0-beta.4 - 2021-02-24
-* Rename `accept::openssl::{SslStream => TlsStream}`.
-* Add `connect::Connect::set_local_addr` to attach local `IpAddr`. [#282]
-* `connector::TcpConnector` service will try to bind to local_addr of `IpAddr` when given. [#282]
+- Rename `accept::openssl::{SslStream => TlsStream}`.
+- Add `connect::Connect::set_local_addr` to attach local `IpAddr`. [#282]
+- `connector::TcpConnector` service will try to bind to local_addr of `IpAddr` when given. [#282]
 
 [#282]: https://github.com/actix/actix-net/pull/282
 
+## 3.0.0-beta.3
 
-## 3.0.0-beta.3 - 2021-02-06
-* Remove `trust-dns-proto` and `trust-dns-resolver`. [#248]
-* Use `std::net::ToSocketAddrs` as simple and basic default resolver. [#248]
-* Add `Resolve` trait for custom DNS resolvers. [#248]
-* Add `Resolver::new_custom` function to construct custom resolvers. [#248]
-* Export `webpki_roots::TLS_SERVER_ROOTS` in `actix_tls::connect` mod and remove
-  the export from `actix_tls::accept` [#248]
-* Remove `ConnectTakeAddrsIter`. `Connect::take_addrs` now returns `ConnectAddrsIter<'static>`
-  as owned iterator. [#248]
-* Rename `Address::{host => hostname}` to more accurately describe which URL segment is returned.
-* Update `actix-rt` to `2.0.0`. [#273]
+- Remove `trust-dns-proto` and `trust-dns-resolver`. [#248]
+- Use `std::net::ToSocketAddrs` as simple and basic default resolver. [#248]
+- Add `Resolve` trait for custom DNS resolvers. [#248]
+- Add `Resolver::new_custom` function to construct custom resolvers. [#248]
+- Export `webpki_roots::TLS_SERVER_ROOTS` in `actix_tls::connect` mod and remove the export from `actix_tls::accept` [#248]
+- Remove `ConnectTakeAddrsIter`. `Connect::take_addrs` now returns `ConnectAddrsIter<'static>` as owned iterator. [#248]
+- Rename `Address::{host => hostname}` to more accurately describe which URL segment is returned.
+- Update `actix-rt` to `2.0.0`. [#273]
 
 [#248]: https://github.com/actix/actix-net/pull/248
 [#273]: https://github.com/actix/actix-net/pull/273
 
+## 3.0.0-beta.2
 
-## 3.0.0-beta.2 - 2021-xx-xx
-* Depend on stable trust-dns packages. [#204]
+- Depend on stable trust-dns packages. [#204]
 
 [#204]: https://github.com/actix/actix-net/pull/204
 
+## 3.0.0-beta.1
 
-## 3.0.0-beta.1 - 2020-12-29
-* Move acceptors under `accept` module. [#238]
-* Merge `actix-connect` crate under `connect` module. [#238]
-* Add feature flags to enable acceptors and/or connectors individually. [#238]
+- Move acceptors under `accept` module. [#238]
+- Merge `actix-connect` crate under `connect` module. [#238]
+- Add feature flags to enable acceptors and/or connectors individually. [#238]
 
 [#238]: https://github.com/actix/actix-net/pull/238
 
+## 2.0.0
 
-## 2.0.0 - 2020-09-03
-* `nativetls::NativeTlsAcceptor` is renamed to `nativetls::Acceptor`.
-* Where possible, "SSL" terminology is replaced with "TLS".
-    * `SslError` is renamed to `TlsError`.
-    * `TlsError::Ssl` enum variant is renamed to `TlsError::Tls`.
-    * `max_concurrent_ssl_connect` is renamed to `max_concurrent_tls_connect`.
+- `nativetls::NativeTlsAcceptor` is renamed to `nativetls::Acceptor`.
+- Where possible, "SSL" terminology is replaced with "TLS".
+  - `SslError` is renamed to `TlsError`.
+  - `TlsError::Ssl` enum variant is renamed to `TlsError::Tls`.
+  - `max_concurrent_ssl_connect` is renamed to `max_concurrent_tls_connect`.
 
+## 2.0.0-alpha.2
 
-## 2.0.0-alpha.2 - 2020-08-17
-* Update `rustls` dependency to 0.18
-* Update `tokio-rustls` dependency to 0.14
-* Update `webpki-roots` dependency to 0.20
+- Update `rustls` dependency to 0.18
+- Update `tokio-rustls` dependency to 0.14
+- Update `webpki-roots` dependency to 0.20
 
+## [2.0.0-alpha.1]
 
-## [2.0.0-alpha.1] - 2020-03-03
-* Update `rustls` dependency to 0.17
-* Update `tokio-rustls` dependency to 0.13
-* Update `webpki-roots` dependency to 0.19
+- Update `rustls` dependency to 0.17
+- Update `tokio-rustls` dependency to 0.13
+- Update `webpki-roots` dependency to 0.19
 
+## [1.0.0]
 
-## [1.0.0] - 2019-12-11
-* 1.0.0 release
+- 1.0.0 release
 
+## [1.0.0-alpha.3]
 
-## [1.0.0-alpha.3] - 2019-12-07
-* Migrate to tokio 0.2
-* Enable rustls acceptor service
-* Enable native-tls acceptor service
+- Migrate to tokio 0.2
+- Enable rustls acceptor service
+- Enable native-tls acceptor service
 
+## [1.0.0-alpha.1]
 
-## [1.0.0-alpha.1] - 2019-12-02
-* Split openssl acceptor from actix-server package
+- Split openssl acceptor from actix-server package

actix-tls/Cargo.toml

@@ -1,25 +1,30 @@
 [package]
 name = "actix-tls"
-version = "3.0.0-beta.5"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+version = "3.4.0"
+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"
+categories = ["network-programming", "asynchronous", "cryptography"]
+license.workspace = true
+edition.workspace = true
+rust-version.workspace = true
 
 [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"
+[package.metadata.cargo_check_external_types]
+allowed_external_types = ["actix_service::*", "actix_utils::*", "futures_core::*", "tokio::*"]
+
+[package.metadata.cargo-machete]
+ignored = [
+  "rustls_021",         # specified to force version with add_trust_anchors method
+  "rustls_webpki_0101", # specified to force secure version
+]
 
 [features]
-default = ["accept", "connect", "uri"]
+default = ["accept", "connect"]
 
 # enable acceptor services
 accept = []
@@ -28,49 +33,103 @@ accept = []
 connect = []
 
 # use openssl impls
-openssl = ["tls-openssl", "tokio-openssl"]
+openssl = ["dep:tls-openssl", "dep:tokio-openssl"]
 
-# use rustls impls
-rustls = ["tokio-rustls", "webpki-roots"]
+# alias for backwards compat
+rustls = ["rustls-0_20"]
+
+# use rustls v0.20 impls
+rustls-0_20 = ["rustls-0_20-webpki-roots"]
+rustls-0_20-webpki-roots = ["tokio-rustls-023", "webpki-roots-022"]
+rustls-0_20-native-roots = ["tokio-rustls-023", "dep:rustls-native-certs-06"]
+
+# use rustls v0.21 impls
+rustls-0_21 = ["rustls-0_21-webpki-roots"]
+rustls-0_21-webpki-roots = ["tokio-rustls-024", "webpki-roots-025"]
+rustls-0_21-native-roots = ["tokio-rustls-024", "dep:rustls-native-certs-06"]
+
+# use rustls v0.22 impls
+rustls-0_22 = ["dep:tokio-rustls-025", "dep:rustls-pki-types-1"]
+rustls-0_22-webpki-roots = ["rustls-0_22", "dep:webpki-roots-026"]
+rustls-0_22-native-roots = ["rustls-0_22", "dep:rustls-native-certs-07"]
+
+# use rustls v0.23 impls
+rustls-0_23 = ["dep:tokio-rustls-026", "dep:rustls-pki-types-1"]
+rustls-0_23-webpki-roots = ["rustls-0_23", "dep:webpki-roots-026"]
+rustls-0_23-native-roots = ["rustls-0_23", "dep:rustls-native-certs-07"]
 
 # use native-tls impls
-native-tls = ["tokio-native-tls"]
+native-tls = ["dep:tokio-native-tls"]
 
 # support http::Uri as connect address
-uri = ["http"]
+uri = ["dep:http-0_2", "dep:http-1"]
 
 [dependencies]
-actix-codec = "0.4.0-beta.1"
-actix-rt = { version = "2.2.0", default-features = false }
-actix-service = "2.0.0"
-actix-utils = "3.0.0"
-
-derive_more = "0.99.5"
+actix-rt = { version = "2.2", default-features = false }
+actix-service = "2"
+actix-utils = "3"
 futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
-http = { version = "0.2.3", optional = true }
-log = "0.4"
-tokio-util = { version = "0.6.3", default-features = false }
+impl-more = "0.1"
+pin-project-lite = "0.2.7"
+tokio = "1.23.1"
+tokio-util = "0.7"
+tracing = { version = "0.1.30", default-features = false, features = ["log"] }
+
+# uri
+http-0_2 = { package = "http", version = "0.2.3", optional = true }
+http-1 = { package = "http", version = "1", optional = true }
 
 # openssl
-tls-openssl = { package = "openssl", version = "0.10.9", optional = true }
+tls-openssl = { package = "openssl", version = "0.10.55", optional = true }
 tokio-openssl = { version = "0.6", optional = true }
 
-# rustls
-tokio-rustls = { version = "0.22", optional = true }
-webpki-roots = { version = "0.21", optional = true }
+# rustls PKI types
+rustls-pki-types-1 = { package = "rustls-pki-types", version = "1", optional = true }
+
+# rustls v0.20
+tokio-rustls-023 = { package = "tokio-rustls", version = "0.23", optional = true }
+
+# rustls v0.21
+tokio-rustls-024 = { package = "tokio-rustls", version = "0.24", optional = true }
+
+# rustls v0.22
+tokio-rustls-025 = { package = "tokio-rustls", version = "0.25", optional = true }
+
+# rustls v0.23
+tokio-rustls-026 = { package = "tokio-rustls", version = "0.26", default-features = false, optional = true }
+
+# webpki-roots used with rustls features
+webpki-roots-022 = { package = "webpki-roots", version = "0.22", optional = true }
+webpki-roots-025 = { package = "webpki-roots", version = "0.25", optional = true }
+webpki-roots-026 = { package = "webpki-roots", version = "0.26", optional = true }
+
+# native root certificates for rustls impls
+rustls-native-certs-06 = { package = "rustls-native-certs", version = "0.6", optional = true }
+rustls-native-certs-07 = { package = "rustls-native-certs", version = "0.7", optional = true }
 
 # native-tls
 tokio-native-tls = { version = "0.3", optional = true }
 
+[target.'cfg(any())'.dependencies]
+rustls-021 = { package = "rustls", version = "0.21.6", optional = true }                 # force version with add_trust_anchors method
+rustls-webpki-0101 = { package = "rustls-webpki", version = "0.101.4", optional = true } # force secure version
+
 [dev-dependencies]
-actix-rt = "2.2.0"
-actix-server = "2.0.0-beta.5"
+actix-codec = "0.5"
+actix-rt = "2.2"
+actix-server = "2"
 bytes = "1"
-env_logger = "0.8"
-futures-util = { version = "0.3.7", default-features = false, features = ["sink"] }
-log = "0.4"
-trust-dns-resolver = "0.20.0"
+futures-util = { version = "0.3.17", default-features = false, features = ["sink"] }
+itertools = "0.14"
+pretty_env_logger = "0.5"
+rcgen = "0.13"
+rustls-pemfile = "2"
+tokio-rustls-026 = { package = "tokio-rustls", version = "0.26" }
+trust-dns-resolver = "0.23"
 
 [[example]]
-name = "tcp-rustls"
-required-features = ["accept", "rustls"]
+name = "accept-rustls"
+required-features = ["accept", "rustls-0_23"]
+
+[lints]
+workspace = true

actix-tls/README.md

@@ -0,0 +1,21 @@
+# `actix-tls`
+
+> TLS acceptor and connector services for the Actix ecosystem.
+
+<!-- prettier-ignore-start -->
+
+[![crates.io](https://img.shields.io/crates/v/actix-tls?label=latest)](https://crates.io/crates/actix-tls)
+[![Documentation](https://docs.rs/actix-tls/badge.svg?version=3.4.0)](https://docs.rs/actix-tls/3.4.0)
+[![Version](https://img.shields.io/badge/rustc-1.52+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.52.0.html)
+![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-tls.svg)
+<br />
+[![Dependency Status](https://deps.rs/crate/actix-tls/3.4.0/status.svg)](https://deps.rs/crate/actix-tls/3.4.0)
+![Download](https://img.shields.io/crates/d/actix-tls.svg)
+[![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+
+<!-- prettier-ignore-end -->
+
+## Resources
+
+- [Library Documentation](https://docs.rs/actix-tls)
+- [Examples](/actix-tls/examples)

actix-tls/examples/accept-rustls.rs

@@ -1,4 +1,4 @@
-//! TLS Acceptor Server
+//! No-Op TLS Acceptor Server
 //!
 //! Using either HTTPie (`http`) or cURL:
 //!
@@ -15,14 +15,12 @@
 //! http --verify=false https://127.0.0.1:8443
 //! ```
 
-// this use only exists because of how we have organised the crate
-// it is not necessary for your actual code
-use tokio_rustls::rustls;
-
+// this `use` is only exists because of how we have organised the crate
+// it is not necessary for your actual code; you should import from `rustls` normally
 use std::{
-    env,
     fs::File,
     io::{self, BufReader},
+    path::PathBuf,
     sync::{
         atomic::{AtomicUsize, Ordering},
         Arc,
@@ -32,28 +30,40 @@ use std::{
 use actix_rt::net::TcpStream;
 use actix_server::Server;
 use actix_service::ServiceFactoryExt as _;
-use actix_tls::accept::rustls::{Acceptor as RustlsAcceptor, TlsStream};
+use actix_tls::accept::rustls_0_23::{Acceptor as RustlsAcceptor, TlsStream};
 use futures_util::future::ok;
-use log::info;
-use rustls::{
-    internal::pemfile::certs, internal::pemfile::rsa_private_keys, NoClientAuth, ServerConfig,
-};
+use itertools::Itertools as _;
+use rustls::server::ServerConfig;
+use rustls_pemfile::{certs, rsa_private_keys};
+use rustls_pki_types_1::PrivateKeyDer;
+use tokio_rustls_026::rustls;
+use tracing::info;
 
 #[actix_rt::main]
 async fn main() -> io::Result<()> {
-    env::set_var("RUST_LOG", "info");
-    env_logger::init();
+    pretty_env_logger::formatted_timed_builder()
+        .parse_env(pretty_env_logger::env_logger::Env::default().default_filter_or("info"));
 
-    let mut tls_config = ServerConfig::new(NoClientAuth::new());
+    let root_path = env!("CARGO_MANIFEST_DIR")
+        .parse::<PathBuf>()
+        .unwrap()
+        .join("examples");
+    let cert_path = root_path.clone().join("cert.pem");
+    let key_path = root_path.clone().join("key.pem");
 
     // 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_file = &mut BufReader::new(File::open(cert_path).unwrap());
+    let key_file = &mut BufReader::new(File::open(key_path).unwrap());
 
-    let cert_chain = certs(cert_file).unwrap();
-    let mut keys = rsa_private_keys(key_file).unwrap();
-    tls_config
-        .set_single_cert(cert_chain, keys.remove(0))
+    let cert_chain = certs(cert_file);
+    let mut keys = rsa_private_keys(key_file);
+
+    let tls_config = ServerConfig::builder()
+        .with_no_client_auth()
+        .with_single_cert(
+            cert_chain.try_collect::<_, Vec<_>, _>()?,
+            PrivateKeyDer::Pkcs1(keys.next().unwrap()?),
+        )
         .unwrap();
 
     let tls_acceptor = RustlsAcceptor::new(tls_config);
@@ -61,7 +71,7 @@ async fn main() -> io::Result<()> {
     let count = Arc::new(AtomicUsize::new(0));
 
     let addr = ("127.0.0.1", 8443);
-    info!("starting server on port: {}", &addr.0);
+    info!("starting server at: {addr:?}");
 
     Server::build()
         .bind("tls-example", addr, move || {

actix-tls/src/accept/mod.rs

@@ -1,25 +1,49 @@
-//! 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,
+    error::Error,
+    fmt,
+    sync::atomic::{AtomicUsize, Ordering},
+};
 
 use actix_utils::counter::Counter;
 
 #[cfg(feature = "openssl")]
 pub mod openssl;
 
-#[cfg(feature = "rustls")]
-pub mod rustls;
+#[cfg(feature = "rustls-0_20")]
+pub mod rustls_0_20;
+
+#[doc(hidden)]
+#[cfg(feature = "rustls-0_20")]
+pub use rustls_0_20 as rustls;
+
+#[cfg(feature = "rustls-0_21")]
+pub mod rustls_0_21;
+
+#[cfg(feature = "rustls-0_22")]
+pub mod rustls_0_22;
+
+#[cfg(feature = "rustls-0_23")]
+pub mod rustls_0_23;
 
 #[cfg(feature = "native-tls")]
 pub mod native_tls;
 
 pub(crate) static MAX_CONN: AtomicUsize = AtomicUsize::new(256);
 
+#[cfg(any(
+    feature = "openssl",
+    feature = "rustls-0_20",
+    feature = "rustls-0_21",
+    feature = "rustls-0_22",
+    feature = "rustls-0_23",
+    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 +58,74 @@ pub fn max_concurrent_tls_connect(num: usize) {
     MAX_CONN.store(num, Ordering::Relaxed);
 }
 
-/// TLS error combined with service error.
+/// 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`].
+///
+/// [`into_service_error`]: Self::into_service_error
 #[derive(Debug)]
-pub enum TlsError<E1, E2> {
-    Tls(E1),
-    Service(E2),
+pub enum TlsError<TlsErr, SvcErr> {
+    /// TLS handshake has timed-out.
+    Timeout,
+
+    /// Wraps TLS service errors.
+    Tls(TlsErr),
+
+    /// Wraps service errors.
+    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 {},
+        }
+    }
+}
+
+impl<TlsErr, SvcErr> fmt::Display for TlsError<TlsErr, SvcErr> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Timeout => f.write_str("TLS handshake has timed-out"),
+            Self::Tls(_) => f.write_str("TLS handshake error"),
+            Self::Service(_) => f.write_str("Service error"),
+        }
+    }
+}
+
+impl<TlsErr, SvcErr> Error for TlsError<TlsErr, SvcErr>
+where
+    TlsErr: Error + 'static,
+    SvcErr: Error + 'static,
+{
+    fn source(&self) -> Option<&(dyn Error + 'static)> {
+        match self {
+            TlsError::Tls(err) => Some(err),
+            TlsError::Service(err) => Some(err),
+            TlsError::Timeout => None,
+        }
+    }
+}
+
+#[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();
+    }
 }