prepare actix-files release 0.6.0

fixes thread panic in actix-http-3.0.0-rc.3 #2655

.appveyor.yml

@@ -1,62 +0,0 @@
-environment:
-  global:
-    PROJECT_NAME: actix
-  matrix:
-    # Stable channel
-    - TARGET: i686-pc-windows-gnu
-      CHANNEL: 1.24.0
-    - TARGET: i686-pc-windows-msvc
-      CHANNEL: 1.24.0
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: 1.24.0
-    - TARGET: x86_64-pc-windows-msvc
-      CHANNEL: 1.24.0
-    # Stable channel
-    - TARGET: i686-pc-windows-gnu
-      CHANNEL: stable
-    - TARGET: i686-pc-windows-msvc
-      CHANNEL: stable
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: stable
-    - TARGET: x86_64-pc-windows-msvc
-      CHANNEL: stable
-    # Beta channel
-    - TARGET: i686-pc-windows-gnu
-      CHANNEL: beta
-    - TARGET: i686-pc-windows-msvc
-      CHANNEL: beta
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: beta
-    - TARGET: x86_64-pc-windows-msvc
-      CHANNEL: beta
-    # Nightly channel
-    - TARGET: i686-pc-windows-gnu
-      CHANNEL: nightly
-    - TARGET: i686-pc-windows-msvc
-      CHANNEL: nightly
-    - TARGET: x86_64-pc-windows-gnu
-      CHANNEL: nightly
-    - TARGET: x86_64-pc-windows-msvc
-      CHANNEL: nightly
-
-# Install Rust and Cargo
-# (Based on from https://github.com/rust-lang/libc/blob/master/appveyor.yml)
-install:
-  - ps: >-
-        If ($Env:TARGET -eq 'x86_64-pc-windows-gnu') {
-           $Env:PATH += ';C:\msys64\mingw64\bin'
-        } ElseIf ($Env:TARGET -eq 'i686-pc-windows-gnu') {
-           $Env:PATH += ';C:\MinGW\bin'
-        }
-  - curl -sSf -o rustup-init.exe https://win.rustup.rs
-  - rustup-init.exe --default-host %TARGET% --default-toolchain %CHANNEL% -y
-  - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
-  - rustc -Vv
-  - cargo -V
-
-# 'cargo test' takes care of building for us, so disable Appveyor's build stage.
-build: false
-
-# Equivalent to Travis' `script` phase
-test_script:
-  - cargo test --no-default-features --features="flate2-rust"

.cargo/config.toml

@@ -0,0 +1,17 @@
+[alias]
+lint = "clippy --workspace --tests --examples --bins -- -Dclippy::todo"
+lint-all = "clippy --workspace --all-features --tests --examples --bins -- -Dclippy::todo"
+
+# lib checking
+ci-check-min = "hack --workspace check --no-default-features"
+ci-check-default = "hack --workspace check"
+ci-check-default-tests = "check --workspace --tests"
+ci-check-all-feature-powerset="hack --workspace --feature-powerset --skip=__compress,experimental-io-uring check"
+ci-check-all-feature-powerset-linux="hack --workspace --feature-powerset --skip=__compress check"
+
+# testing
+ci-doctest-default = "test --workspace --doc --no-fail-fast -- --nocapture"
+ci-doctest = "test --workspace --all-features --doc --no-fail-fast -- --nocapture"
+
+# compile docs as docs.rs would
+# RUSTDOCFLAGS="--cfg=docsrs" cargo +nightly doc --no-deps --workspace

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: [robjtede]

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,37 @@
+---
+name: Bug Report
+about: Create a bug report.
+---
+
+Your issue may already be reported!
+Please search on the [Actix Web issue tracker](https://github.com/actix/actix-web/issues) before creating one.
+
+## Expected Behavior
+<!--- If you're describing a bug, tell us what should happen -->
+<!--- If you're suggesting a change/improvement, tell us how it should work -->
+
+## Current Behavior
+<!--- If describing a bug, tell us what happens instead of the expected behavior -->
+<!--- If suggesting a change/improvement, explain the difference from current behavior -->
+
+## Possible Solution
+<!--- Not obligatory, but suggest a fix/reason for the bug, -->
+<!--- or ideas how to implement the addition or change -->
+
+## Steps to Reproduce (for bugs)
+<!--- Provide a link to a live example, or an unambiguous set of steps to -->
+<!--- reproduce this bug. Include code to reproduce, if relevant -->
+1.
+2.
+3.
+4.
+
+## Context
+<!--- How has this issue affected you? What are you trying to accomplish? -->
+<!--- Providing context helps us come up with a solution that is most useful in the real world -->
+
+## Your Environment
+<!--- Include as many relevant details about the environment you experienced the bug in -->
+
+- Rust Version (I.e, output of `rustc -V`):
+- Actix Web Version:

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: true
+contact_links:
+  - name: Actix Discord
+    url: https://discord.gg/NWpN5mmg3x
+    about: Actix developer discussion and community chat
+  - name: GitHub Discussions
+    url: https://github.com/actix/actix-web/discussions
+    about: Actix Web Q&A

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,27 @@
+<!-- Thanks for considering contributing actix! -->
+<!-- Please fill out the following to get your PR reviewed quicker. -->
+
+## PR Type
+<!-- What kind of change does this PR make? -->
+<!-- Bug Fix / Feature / Refactor / Code Style / Other -->
+PR_TYPE
+
+
+## PR Checklist
+<!-- Check your PR fulfills the following items. -->
+<!-- For draft PRs check the boxes as you complete them. -->
+
+- [ ] Tests for the changes have been added / updated.
+- [ ] Documentation comments have been added / updated.
+- [ ] A changelog entry has been made for the appropriate packages.
+- [ ] Format code with the latest stable rustfmt.
+- [ ] (Team) Label with affected crates and semver status.
+
+
+## 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/workflows/bench.yml

@@ -0,0 +1,26 @@
+name: Benchmark
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  check_benchmark:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          profile: minimal
+          override: true
+
+      - name: Check benchmark
+        uses: actions-rs/cargo@v1
+        with:
+          command: bench
+          args: --bench=server -- --sample-size=15

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

@@ -0,0 +1,185 @@
+name: CI (post-merge)
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  build_and_test_nightly:
+    strategy:
+      fail-fast: false
+      matrix:
+        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-2022, triple: x86_64-pc-windows-msvc }
+        version:
+          - nightly
+
+    name: ${{ matrix.target.name }} / ${{ matrix.version }}
+    runs-on: ${{ matrix.target.os }}
+
+    env:
+      CI: 1
+      CARGO_INCREMENTAL: 0
+      VCPKGRS_DYNAMIC: 1
+
+    steps:
+      - uses: actions/checkout@v2
+
+      # install OpenSSL on Windows
+      # TODO: GitHub actions docs state that OpenSSL is
+      # already installed on these Windows machines somewhere
+      - name: Set vcpkg root
+        if: matrix.target.triple == 'x86_64-pc-windows-msvc'
+        run: echo "VCPKG_ROOT=$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 ${{ matrix.version }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.version }}-${{ matrix.target.triple }}
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.2.0
+
+      - name: Install cargo-hack
+        uses: actions-rs/cargo@v1
+        with:
+          command: install
+          args: cargo-hack
+
+      - name: check minimal
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-min }
+
+      - name: check default
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-default }
+
+      - name: tests
+        timeout-minutes: 60
+        run: |
+          cargo test --lib --tests -p=actix-router --all-features
+          cargo test --lib --tests -p=actix-http --all-features
+          cargo test --lib --tests -p=actix-web --features=rustls,openssl -- --skip=test_reading_deflate_encoding_large_random_rustls
+          cargo test --lib --tests -p=actix-web-codegen --all-features
+          cargo test --lib --tests -p=awc --all-features
+          cargo test --lib --tests -p=actix-http-test --all-features
+          cargo test --lib --tests -p=actix-test --all-features
+          cargo test --lib --tests -p=actix-files
+          cargo test --lib --tests -p=actix-multipart --all-features
+          cargo test --lib --tests -p=actix-web-actors --all-features
+
+      - name: tests (io-uring)
+        if: matrix.target.os == 'ubuntu-latest'
+        timeout-minutes: 60
+        run: >
+          sudo bash -c "ulimit -Sl 512
+          && ulimit -Hl 512
+          && PATH=$PATH:/usr/share/rust/.cargo/bin
+          && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo test --lib --tests -p=actix-files --all-features"
+
+      - name: Clear the cargo caches
+        run: |
+          cargo install cargo-cache --version 0.6.3 --no-default-features --features ci-autoclean
+          cargo-cache
+
+  ci_feature_powerset_check:
+    name: Verify Feature Combinations
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install stable
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable-x86_64-unknown-linux-gnu
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.2.0
+
+      - name: Install cargo-hack
+        uses: actions-rs/cargo@v1
+        with:
+          command: install
+          args: cargo-hack
+
+      - name: check feature combinations
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-all-feature-powerset }
+      
+      - name: check feature combinations
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-all-feature-powerset-linux }
+
+  # job currently (1st Feb 2022) segfaults
+  # coverage:
+  #   name: coverage
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/checkout@v2
+
+  #     - name: Install stable
+  #       uses: actions-rs/toolchain@v1
+  #       with:
+  #         toolchain: stable-x86_64-unknown-linux-gnu
+  #         profile: minimal
+  #         override: true
+
+  #     - name: Generate Cargo.lock
+  #       uses: actions-rs/cargo@v1
+  #       with: { command: generate-lockfile }
+  #     - name: Cache Dependencies
+  #       uses: Swatinem/rust-cache@v1.2.0
+
+  #     - name: Generate coverage file
+  #       run: |
+  #         cargo install cargo-tarpaulin --vers "^0.13"
+  #         cargo tarpaulin --workspace --features=rustls,openssl --out Xml --verbose
+  #     - name: Upload to Codecov
+  #       uses: codecov/codecov-action@v1
+  #       with: { file: cobertura.xml }
+
+  nextest:
+    name: nextest
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.3.0
+
+      - name: Install cargo-nextest
+        uses: actions-rs/cargo@v1
+        with:
+          command: install
+          args: cargo-nextest
+
+      - name: Test with cargo-nextest
+        uses: actions-rs/cargo@v1
+        with:
+          command: nextest
+          args: run

.github/workflows/ci.yml

@@ -0,0 +1,120 @@
+name: CI
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+  push:
+    branches: [master]
+
+jobs:
+  build_and_test:
+    strategy:
+      fail-fast: false
+      matrix:
+        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-2022, triple: x86_64-pc-windows-msvc }
+        version:
+          - 1.54.0 # MSRV
+          - stable
+
+    name: ${{ matrix.target.name }} / ${{ matrix.version }}
+    runs-on: ${{ matrix.target.os }}
+
+    env:
+      CI: 1
+      CARGO_INCREMENTAL: 0
+      VCPKGRS_DYNAMIC: 1
+
+    steps:
+      - uses: actions/checkout@v2
+
+      # install OpenSSL on Windows
+      # TODO: GitHub actions docs state that OpenSSL is
+      # already installed on these Windows machines somewhere
+      - name: Set vcpkg root
+        if: matrix.target.triple == 'x86_64-pc-windows-msvc'
+        run: echo "VCPKG_ROOT=$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 ${{ matrix.version }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.version }}-${{ matrix.target.triple }}
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.2.0
+
+      - name: Install cargo-hack
+        uses: actions-rs/cargo@v1
+        with:
+          command: install
+          args: cargo-hack
+
+      - name: check minimal
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-min }
+
+      - name: check default
+        uses: actions-rs/cargo@v1
+        with: { command: ci-check-default }
+
+      - name: tests
+        timeout-minutes: 60
+        run: |
+          cargo test --lib --tests -p=actix-router --all-features
+          cargo test --lib --tests -p=actix-http --all-features
+          cargo test --lib --tests -p=actix-web --features=rustls,openssl -- --skip=test_reading_deflate_encoding_large_random_rustls
+          cargo test --lib --tests -p=actix-web-codegen --all-features
+          cargo test --lib --tests -p=awc --all-features
+          cargo test --lib --tests -p=actix-http-test --all-features
+          cargo test --lib --tests -p=actix-test --all-features
+          cargo test --lib --tests -p=actix-files
+          cargo test --lib --tests -p=actix-multipart --all-features
+          cargo test --lib --tests -p=actix-web-actors --all-features
+
+      - name: tests (io-uring)
+        if: matrix.target.os == 'ubuntu-latest'
+        timeout-minutes: 60
+        run: >
+          sudo bash -c "ulimit -Sl 512
+          && ulimit -Hl 512
+          && PATH=$PATH:/usr/share/rust/.cargo/bin
+          && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo test --lib --tests -p=actix-files --all-features"
+
+      - name: Clear the cargo caches
+        run: |
+          cargo install cargo-cache --version 0.6.3 --no-default-features --features ci-autoclean
+          cargo-cache
+
+  rustdoc:
+    name: doc tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install Rust (nightly)
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-x86_64-unknown-linux-gnu
+          profile: minimal
+          override: true
+
+      - name: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.3.0
+
+      - name: doc tests
+        uses: actions-rs/cargo@v1
+        timeout-minutes: 60
+        with: { command: ci-doctest }

.github/workflows/clippy-fmt.yml

@@ -0,0 +1,66 @@
+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
+      - name: Check with rustfmt
+        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: Generate Cargo.lock
+        uses: actions-rs/cargo@v1
+        with: { command: generate-lockfile }
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v1.2.0
+
+      - name: Check with Clippy
+        uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --workspace --tests --examples --all-features
+
+  lint-docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: rust-docs
+      - name: Check for broken intra-doc links
+        uses: actions-rs/cargo@v1
+        env:
+          RUSTDOCFLAGS: "-D warnings"
+        with:
+          command: doc
+          args: --no-deps --all-features --workspace

.github/workflows/upload-doc.yml

@@ -0,0 +1,35 @@
+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_web/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

@@ -9,6 +9,13 @@ guide/build/
 *.pid
 *.sock
 *~
+.DS_Store
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+# Configuration directory generated by CLion
+.idea
+
+# Configuration directory generated by VSCode
+.vscode

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+    "proseWrap": "never"
+}

.travis.yml

@@ -1,55 +0,0 @@
-language: rust
-sudo: false
-dist: trusty
-
-cache:
-  cargo: true
-  apt: true
-
-matrix:
-  include:
-    - rust: 1.24.0
-    - rust: stable
-    - rust: beta
-    - rust: nightly
-  allow_failures:
-    - rust: nightly
-
-env:
-  global:
-    # - RUSTFLAGS="-C link-dead-code"
-    - OPENSSL_VERSION=openssl-1.0.2
-
-before_install:
-  - sudo add-apt-repository -y ppa:0k53d-karl-f830m/openssl
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq libssl-dev libelf-dev libdw-dev cmake gcc binutils-dev libiberty-dev
-
-# Add clippy
-before_script:
-  - export PATH=$PATH:~/.cargo/bin
-
-script:
-  - |
-    if [[ "$TRAVIS_RUST_VERSION" != "1.24.0" ]]; then
-    cargo clean
-    cargo test --features="alpn,tls" -- --nocapture
-    fi
-  - |
-    if [[ "$TRAVIS_RUST_VERSION" == "1.24.0" ]]; then
-    bash <(curl https://raw.githubusercontent.com/xd009642/tarpaulin/master/travis-install.sh)
-    USE_SKEPTIC=1 cargo tarpaulin --out Xml --no-count
-    bash <(curl -s https://codecov.io/bash)
-    echo "Uploaded code coverage"
-    fi
-
-# Upload docs
-after_success:
-  - |
-    if [[ "$TRAVIS_OS_NAME" == "linux" && "$TRAVIS_PULL_REQUEST" = "false" && "$TRAVIS_BRANCH" == "master" && "$TRAVIS_RUST_VERSION" == "stable" ]]; then
-      cargo doc --features "alpn, tls, session" --no-deps &&
-      echo "<meta http-equiv=refresh content=0;url=os_balloon/index.html>" > target/doc/index.html &&
-      git clone https://github.com/davisp/ghp-import.git &&
-      ./ghp-import/ghp_import.py -n -p -f -m "Documentation upload" -r https://"$GH_TOKEN"@github.com/"$TRAVIS_REPO_SLUG.git" target/doc &&
-      echo "Uploaded documentation"
-    fi

CHANGES.md

@@ -1,388 +1,5 @@
-# Changes
+# Changelog
 
-## 0.6.9 (2018-05-22)
+Changelogs are kept separately for each crate in this repo.
 
-* Drop connection if request's payload is not fully consumed #236
-
-* Fix streaming response with body compression
-
-
-## 0.6.8 (2018-05-20)
-
-* Fix scope resource path extractor #234
-
-* Re-use tcp listener on pause/resume
-
-
-## 0.6.7 (2018-05-17)
-
-* Fix compilation with --no-default-features
-
-
-## 0.6.6 (2018-05-17)
-
-* Panic during middleware execution #226
-
-* Add support for listen_tls/listen_ssl #224
-
-* Implement extractor for `Session`
-
-* Ranges header support for NamedFile #60
-
-
-## 0.6.5 (2018-05-15)
-
-* Fix error handling during request decoding #222
-
-
-## 0.6.4 (2018-05-11)
-
-* Fix segfault in ServerSettings::get_response_builder()
-
-
-## 0.6.3 (2018-05-10)
-
-* Add `Router::with_async()` method for async handler registration.
-
-* Added error response functions for 501,502,503,504
-
-* Fix client request timeout handling
-
-
-## 0.6.2 (2018-05-09)
-
-* WsWriter trait is optional.
-
-
-## 0.6.1 (2018-05-08)
-
-* Fix http/2 payload streaming #215
-
-* Fix connector's default `keep-alive` and `lifetime` settings #212
-
-* Send `ErrorNotFound` instead of `ErrorBadRequest` when path extractor fails #214
-
-* Allow to exclude certain endpoints from logging #211
-
-
-## 0.6.0 (2018-05-08)
-
-* Add route scopes #202
-
-* Allow to use ssl and non-ssl connections at the same time #206
-
-* Websocket CloseCode Empty/Status is ambiguous #193
-
-* Add Content-Disposition to NamedFile #204
-
-* Allow to access Error's backtrace object
-
-* Allow to override files listing renderer for `StaticFiles` #203
-
-* Various extractor usability improvements #207
-
-
-## 0.5.6 (2018-04-24)
-
-* Make flate2 crate optional #200
-
-
-## 0.5.5 (2018-04-24)
-
-* Fix panic when Websocket is closed with no error code #191
-
-* Allow to use rust backend for flate2 crate #199
-
-## 0.5.4 (2018-04-19)
-
-* Add identity service middleware
-
-* Middleware response() is not invoked if there was an error in async handler #187
-
-* Use Display formatting for InternalError Display implementation #188
-
-
-## 0.5.3 (2018-04-18)
-
-* Impossible to quote slashes in path parameters #182
-
-
-## 0.5.2 (2018-04-16)
-
-* Allow to configure StaticFiles's CpuPool, via static method or env variable
-
-* Add support for custom handling of Json extractor errors #181
-
-* Fix StaticFiles does not support percent encoded paths #177
-
-* Fix Client Request with custom Body Stream halting on certain size requests #176
-
-
-## 0.5.1 (2018-04-12)
-
-* Client connector provides stats, `ClientConnector::stats()`
-
-* Fix end-of-stream handling in parse_payload #173
-
-* Fix StaticFiles generate a lot of threads #174
-
-
-## 0.5.0 (2018-04-10)
-
-* Type-safe path/query/form parameter handling, using serde #70
-
-* HttpResponse builder's methods  `.body()`, `.finish()`, `.json()`
-  return `HttpResponse` instead of `Result`
-
-* Use more ergonomic `actix_web::Error` instead of `http::Error` for `ClientRequestBuilder::body()`
-
-* Added `signed` and `private` `CookieSessionBackend`s
-
-* Added `HttpRequest::resource()`, returns current matched resource
-
-* Added `ErrorHandlers` middleware
-
-* Fix router cannot parse Non-ASCII characters in URL #137
-
-* Fix client connection pooling
-
-* Fix long client urls #129
-
-* Fix panic on invalid URL characters #130
-
-* Fix logger request duration calculation #152
-
-* Fix prefix and static file serving #168
-
-
-## 0.4.10 (2018-03-20)
-
-* Use `Error` instead of `InternalError` for `error::ErrorXXXX` methods
-
-* Allow to set client request timeout
-
-* Allow to set client websocket handshake timeout
-
-* Refactor `TestServer` configuration
-
-* Fix server websockets big payloads support
-
-* Fix http/2 date header generation
-
-
-## 0.4.9 (2018-03-16)
-
-* Allow to disable http/2 support
-
-* Wake payload reading task when data is available
-
-* Fix server keep-alive handling
-
-* Send Query Parameters in client requests #120
-
-* Move brotli encoding to a feature
-
-* Add option of default handler for `StaticFiles` handler #57
-
-* Add basic client connection pooling
-
-
-## 0.4.8 (2018-03-12)
-
-* Allow to set read buffer capacity for server request
-
-* Handle WouldBlock error for socket accept call
-
-
-## 0.4.7 (2018-03-11)
-
-* Fix panic on unknown content encoding
-
-* Fix connection get closed too early
-
-* Fix streaming response handling for http/2
-
-* Better sleep on error support
-
-
-## 0.4.6 (2018-03-10)
-
-* Fix client cookie handling
-
-* Fix json content type detection
-
-* Fix CORS middleware #117
-
-* Optimize websockets stream support
-
-
-## 0.4.5 (2018-03-07)
-
-* Fix compression #103 and #104
-
-* Fix client cookie handling #111
-
-* Non-blocking processing of a `NamedFile`
-
-* Enable compression support for `NamedFile`
-
-* Better support for `NamedFile` type
-
-* Add `ResponseError` impl for `SendRequestError`. This improves ergonomics of the client.
-
-* Add native-tls support for client
-
-* Allow client connection timeout to be set #108
-
-* Allow to use std::net::TcpListener for HttpServer
-
-* Handle panics in worker threads
-
-
-## 0.4.4 (2018-03-04)
-
-* Allow to use Arc<Vec<u8>> as response/request body
-
-* Fix handling of requests with an encoded body with a length > 8192 #93
-
-## 0.4.3 (2018-03-03)
-
-* Fix request body read bug
-
-* Fix segmentation fault #79
-
-* Set reuse address before bind #90
-
-
-## 0.4.2 (2018-03-02)
-
-* Better naming for websockets implementation
-
-* Add `Pattern::with_prefix()`, make it more usable outside of actix
-
-* Add csrf middleware for filter for cross-site request forgery #89
-
-* Fix disconnect on idle connections
-
-
-## 0.4.1 (2018-03-01)
-
-* Rename `Route::p()` to `Route::filter()`
-
-* Better naming for http codes
-
-* Fix payload parse in situation when socket data is not ready.
-
-* Fix Session mutable borrow lifetime #87
-
-
-## 0.4.0 (2018-02-28)
-
-* Actix 0.5 compatibility
-
-* Fix request json/urlencoded loaders
-
-* Simplify HttpServer type definition
-
-* Added HttpRequest::encoding() method
-
-* Added HttpRequest::mime_type() method
-
-* Added HttpRequest::uri_mut(), allows to modify request uri
-
-* Added StaticFiles::index_file()
-
-* Added http client
-
-* Added websocket client
-
-* Added TestServer::ws(), test websockets client
-
-* Added TestServer http client support
-
-* Allow to override content encoding on application level
-
-
-## 0.3.3 (2018-01-25)
-
-* Stop processing any events after context stop
-
-* Re-enable write back-pressure for h1 connections
-
-* Refactor HttpServer::start_ssl() method
-
-* Upgrade openssl to 0.10
-
-
-## 0.3.2 (2018-01-21)
-
-* Fix HEAD requests handling
-
-* Log request processing errors
-
-* Always enable content encoding if encoding explicitly selected
-
-* Allow multiple Applications on a single server with different state #49
-
-* CORS middleware: allowed_headers is defaulting to None #50
-
-
-## 0.3.1 (2018-01-13)
-
-* Fix directory entry path #47
-
-* Do not enable chunked encoding for HTTP/1.0
-
-* Allow explicitly disable chunked encoding
-
-
-## 0.3.0 (2018-01-12)
-
-* HTTP/2 Support
-
-* Refactor streaming responses
-
-* Refactor error handling
-
-* Asynchronous middlewares
-
-* Refactor logger middleware
-
-* Content compression/decompression (br, gzip, deflate)
-
-* Server multi-threading
-
-* Gracefull shutdown support
-
-
-## 0.2.1 (2017-11-03)
-
-* Allow to start tls server with `HttpServer::serve_tls`
-
-* Export `Frame` enum
-
-* Add conversion impl from `HttpResponse` and `BinaryBody` to a `Frame`
-
-
-## 0.2.0 (2017-10-30)
-
-* Do not use `http::Uri` as it can not parse some valid paths
-
-* Refactor response `Body`
-
-* Refactor `RouteRecognizer` usability
-
-* Refactor `HttpContext::write`
-
-* Refactor `Payload` stream
-
-* Re-use `BinaryBody` for `Frame::Payload`
-
-* Stop http actor on `write_eof`
-
-* Fix disconnection handling.
-
-
-## 0.1.0 (2017-10-23)
-
-* First release
+Actix Web changelog [is now here &rarr;](./actix-web/CHANGES.md).

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
 
@@ -34,10 +34,13 @@ This Code of Conduct applies both within project spaces and in public spaces whe
 
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at fafhrd91@gmail.com. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at robjtede@icloud.com ([@robjtede]) or huyuumi@neet.club ([@JohnTitor]). The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
 
 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
+
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]

Cargo.toml

@@ -1,116 +1,44 @@
-[package]
-name = "actix-web"
-version = "0.6.9"
-authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
-description = "Actix web is a simple, pragmatic and extremely fast web framework for Rust."
-readme = "README.md"
-keywords = ["http", "web", "framework", "async", "futures"]
-homepage = "https://github.com/actix/actix-web"
-repository = "https://github.com/actix/actix-web.git"
-documentation = "https://docs.rs/actix-web/"
-categories = ["network-programming", "asynchronous",
-              "web-programming::http-server",
-              "web-programming::http-client",
-              "web-programming::websocket"]
-license = "MIT/Apache-2.0"
-exclude = [".gitignore", ".travis.yml", ".cargo/config", "appveyor.yml"]
-build = "build.rs"
+[workspace]
+resolver = "2"
+members = [
+    "actix-files",
+    "actix-http-test",
+    "actix-http",
+    "actix-multipart",
+    "actix-router",
+    "actix-test",
+    "actix-web-actors",
+    "actix-web-codegen",
+    "actix-web",
+    "awc",
+]
 
-[badges]
-travis-ci = { repository = "actix/actix-web", branch = "master" }
-appveyor = { repository = "fafhrd91/actix-web-hdy9d" }
-codecov = { repository = "actix/actix-web", branch = "master", service = "github" }
-
-[lib]
-name = "actix_web"
-path = "src/lib.rs"
-
-[features]
-default = ["session", "brotli", "flate2-c"]
-
-# tls
-tls = ["native-tls", "tokio-tls"]
-
-# openssl
-alpn = ["openssl", "tokio-openssl"]
-
-# sessions feature, session require "ring" crate and c compiler
-session = ["cookie/secure"]
-
-# brotli encoding, requires c compiler
-brotli = ["brotli2"]
-
-# miniz-sys backend for flate2 crate
-flate2-c = ["flate2/miniz-sys"]
-
-# rust backend for flate2 crate
-flate2-rust = ["flate2/rust_backend"]
-
-[dependencies]
-actix = "^0.5.5"
-
-base64 = "0.9"
-bitflags = "1.0"
-failure = "0.1.1"
-h2 = "0.1"
-http = "^0.1.5"
-httparse = "1.2"
-http-range = "0.1"
-libc = "0.2"
-log = "0.4"
-mime = "0.3"
-mime_guess = "2.0.0-alpha"
-num_cpus = "1.0"
-percent-encoding = "1.0"
-rand = "0.4"
-regex = "1.0"
-serde = "1.0"
-serde_json = "1.0"
-serde_urlencoded = "0.5"
-sha1 = "0.6"
-smallvec = "0.6"
-time = "0.1"
-encoding = "0.2"
-language-tags = "0.2"
-lazy_static = "1.0"
-url = { version="1.7", features=["query_encoding"] }
-cookie = { version="0.10", features=["percent-encode"] }
-brotli2 = { version="^0.3.2", optional = true }
-flate2 = { version="1.0", optional = true, default-features = false }
-
-# io
-mio = "^0.6.13"
-net2 = "0.2"
-bytes = "0.4"
-byteorder = "1"
-futures = "0.1"
-futures-cpupool = "0.1"
-slab = "0.4"
-tokio-io = "0.1"
-tokio-core = "0.1"
-
-# native-tls
-native-tls = { version="0.1", optional = true }
-tokio-tls = { version="0.1", optional = true }
-
-# openssl
-openssl = { version="0.10", optional = true }
-tokio-openssl = { version="0.2", optional = true }
-
-[dev-dependencies]
-env_logger = "0.5"
-serde_derive = "1.0"
-
-[build-dependencies]
-version_check = "0.1"
+[profile.dev]
+# Disabling debug info speeds up builds a bunch and we don't rely on it for debugging that much.
+debug = 0
 
 [profile.release]
 lto = true
 opt-level = 3
 codegen-units = 1
 
-[workspace]
-members = [
-  "./",
-  "tools/wsload/",
-]
+[patch.crates-io]
+actix-files = { path = "actix-files" }
+actix-http = { path = "actix-http" }
+actix-http-test = { path = "actix-http-test" }
+actix-multipart = { path = "actix-multipart" }
+actix-router = { path = "actix-router" }
+actix-test = { path = "actix-test" }
+actix-web = { path = "actix-web" }
+actix-web-actors = { path = "actix-web-actors" }
+actix-web-codegen = { path = "actix-web-codegen" }
+awc = { path = "awc" }
+
+# uncomment for quick testing against local actix-net repo
+# actix-service = { path = "../actix-net/actix-service" }
+# actix-macros = { path = "../actix-net/actix-macros" }
+# actix-rt = { path = "../actix-net/actix-rt" }
+# actix-codec = { path = "../actix-net/actix-codec" }
+# actix-utils = { path = "../actix-net/actix-utils" }
+# actix-tls = { path = "../actix-net/actix-tls" }
+# actix-server = { path = "../actix-net/actix-server" }

LICENSE-APACHE

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

LICENSE-MIT

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

MIGRATION.md

@@ -1,82 +0,0 @@
-## Migration from 0.5 to 0.6
-
-* `Path<T>` extractor return `ErrorNotFound` on failure instead of `ErrorBadRequest`
-
-* `ws::Message::Close` now includes optional close reason.
-  `ws::CloseCode::Status` and `ws::CloseCode::Empty` have been removed.
-
-* `HttpServer::threads()` renamed to `HttpServer::workers()`.
-
-* `HttpServer::start_ssl()` and `HttpServer::start_tls()` deprecated.
-  Use `HttpServer::bind_ssl()` and `HttpServer::bind_tls()` instead.
-
-* `HttpRequest::extensions()` returns read only reference to the request's Extension
-  `HttpRequest::extensions_mut()` returns mutable reference.
-
-* Instead of 
-
-   `use actix_web::middleware::{
-        CookieSessionBackend, CookieSessionError, RequestSession,
-        Session, SessionBackend, SessionImpl, SessionStorage};`
-                                
-  use `actix_web::middleware::session`
-
-   `use actix_web::middleware::session{CookieSessionBackend, CookieSessionError,
-        RequestSession, Session, SessionBackend, SessionImpl, SessionStorage};`
-
-* `FromRequest::from_request()` accepts mutable reference to a request
-
-* `FromRequest::Result` has to implement `Into<Reply<Self>>`
-
-* [`Responder::respond_to()`](
-  https://actix.rs/actix-web/actix_web/trait.Responder.html#tymethod.respond_to)
-  is generic over `S`
-
-*  Use `Query` extractor instead of HttpRequest::query()`.
-
-   ```rust
-   fn index(q: Query<HashMap<String, String>>) -> Result<..> {
-       ...
-   }
-   ```
-
-   or
-
-   ```rust
-   let q = Query::<HashMap<String, String>>::extract(req);
-   ```
-
-* Websocket operations are implemented as `WsWriter` trait.
-  you need to use `use actix_web::ws::WsWriter`
-
-
-## Migration from 0.4 to 0.5
-
-* `HttpResponseBuilder::body()`, `.finish()`, `.json()`
-   methods return `HttpResponse` instead of `Result<HttpResponse>`
-
-* `actix_web::Method`, `actix_web::StatusCode`, `actix_web::Version`
-   moved to `actix_web::http` module
-
-* `actix_web::header` moved to `actix_web::http::header`
-
-* `NormalizePath` moved to `actix_web::http` module
-
-* `HttpServer` moved to `actix_web::server`, added new `actix_web::server::new()` function,
-  shortcut for `actix_web::server::HttpServer::new()`
-
-* `DefaultHeaders` middleware does not use separate builder, all builder methods moved to type itself
-
-* `StaticFiles::new()`'s show_index parameter removed, use `show_files_listing()` method instead.
-
-* `CookieSessionBackendBuilder` removed, all methods moved to `CookieSessionBackend` type
-
-* `actix_web::httpcodes` module is deprecated, `HttpResponse::Ok()`, `HttpResponse::Found()` and other `HttpResponse::XXX()`
-   functions should be used instead
-
-* `ClientRequestBuilder::body()` returns `Result<_, actix_web::Error>`
-  instead of `Result<_, http::Error>`
-
-* `Application` renamed to a `App`
-
-* `actix_web::Reply`, `actix_web::Resource` moved to `actix_web::dev`

Makefile

@@ -1,14 +0,0 @@
-.PHONY: default build test doc book clean
-
-CARGO_FLAGS := --features "$(FEATURES) alpn"
-
-default: test
-
-build:
-	cargo build $(CARGO_FLAGS)
-
-test: build clippy
-	cargo test $(CARGO_FLAGS)
-
-doc: build
-	cargo doc --no-deps $(CARGO_FLAGS)

README.md

@@ -1,89 +0,0 @@
-# Actix web [![Build Status](https://travis-ci.org/actix/actix-web.svg?branch=master)](https://travis-ci.org/actix/actix-web) [![Build status](https://ci.appveyor.com/api/projects/status/kkdb4yce7qhm5w85/branch/master?svg=true)](https://ci.appveyor.com/project/fafhrd91/actix-web-hdy9d/branch/master) [![codecov](https://codecov.io/gh/actix/actix-web/branch/master/graph/badge.svg)](https://codecov.io/gh/actix/actix-web) [![crates.io](https://meritbadge.herokuapp.com/actix-web)](https://crates.io/crates/actix-web) [![Join the chat at https://gitter.im/actix/actix](https://badges.gitter.im/actix/actix.svg)](https://gitter.im/actix/actix?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-
-Actix web is a simple, pragmatic and extremely fast web framework for Rust.
-
-* Supported *HTTP/1.x* and [*HTTP/2.0*](https://actix.rs/book/actix-web/sec-12-http2.html) protocols
-* Streaming and pipelining
-* Keep-alive and slow requests handling
-* Client/server [WebSockets](https://actix.rs/book/actix-web/sec-11-websockets.html) support
-* Transparent content compression/decompression (br, gzip, deflate)
-* Configurable [request routing](https://actix.rs/book/actix-web/sec-6-url-dispatch.html)
-* Graceful server shutdown
-* Multipart streams
-* Static assets
-* SSL support with OpenSSL or `native-tls`
-* Middlewares ([Logger](https://actix.rs/book/actix-web/sec-9-middlewares.html#logging),
-  [Session](https://actix.rs/book/actix-web/sec-9-middlewares.html#user-sessions),
-  [Redis sessions](https://github.com/actix/actix-redis),
-  [DefaultHeaders](https://actix.rs/book/actix-web/sec-9-middlewares.html#default-headers),
-  [CORS](https://actix.rs/actix-web/actix_web/middleware/cors/index.html),
-  [CSRF](https://actix.rs/actix-web/actix_web/middleware/csrf/index.html))
-* Includes an asynchronous [HTTP client](https://github.com/actix/actix-web/blob/master/src/client/mod.rs)
-* Built on top of [Actix actor framework](https://github.com/actix/actix)
-
-## Documentation & community resources
-
-* [User Guide](https://actix.rs/book/actix-web/)
-* [API Documentation (Development)](https://actix.rs/actix-web/actix_web/)
-* [API Documentation (Releases)](https://docs.rs/actix-web/)
-* [Chat on gitter](https://gitter.im/actix/actix)
-* Cargo package: [actix-web](https://crates.io/crates/actix-web)
-* Minimum supported Rust version: 1.24 or later
-
-## Example
-
-```rust
-extern crate actix_web;
-use actix_web::{http, server, App, Path};
-
-fn index(info: Path<(u32, String)>) -> String {
-    format!("Hello {}! id:{}", info.1, info.0)
-}
-
-fn main() {
-    server::new(
-        || App::new()
-            .route("/{id}/{name}/index.html", http::Method::GET, index))
-        .bind("127.0.0.1:8080").unwrap()
-        .run();
-}
-```
-
-### More examples
-
-* [Basics](https://github.com/actix/examples/tree/master/basics/)
-* [Stateful](https://github.com/actix/examples/tree/master/state/)
-* [Protobuf support](https://github.com/actix/examples/tree/master/protobuf/)
-* [Multipart streams](https://github.com/actix/examples/tree/master/multipart/)
-* [Simple websocket](https://github.com/actix/examples/tree/master/websocket/)
-* [Tera](https://github.com/actix/examples/tree/master/template_tera/) / 
-  [Askama](https://github.com/actix/examples/tree/master/template_askama/) templates
-* [Diesel integration](https://github.com/actix/examples/tree/master/diesel/)
-* [r2d2](https://github.com/actix/examples/tree/master/r2d2/)
-* [SSL / HTTP/2.0](https://github.com/actix/examples/tree/master/tls/)
-* [Tcp/Websocket chat](https://github.com/actix/examples/tree/master/websocket-chat/)
-* [Json](https://github.com/actix/examples/tree/master/json/)
-
-You may consider checking out
-[this directory](https://github.com/actix/examples/tree/master/) for more examples.
-
-## Benchmarks
-
-* [TechEmpower Framework Benchmark](https://www.techempower.com/benchmarks/#section=data-r15&hw=ph&test=plaintext)
-
-* Some basic benchmarks could be found in this [repository](https://github.com/fafhrd91/benchmarks).
-
-## 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))
-
-at your option.
-
-## Code of Conduct
-
-Contribution to the actix-web crate is organized under the terms of the
-Contributor Covenant, the maintainer of actix-web, @fafhrd91, promises to
-intervene to uphold that code of conduct.

README.md

@@ -0,0 +1 @@
+actix-web/README.md

actix-files/CHANGES.md

@@ -0,0 +1,211 @@
+# Changes
+
+## Unreleased - 2021-xx-xx
+
+
+## 0.6.0 - 2022-02-25
+- No significant changes since `0.6.0-beta.16`.
+
+
+## 0.6.0-beta.16 - 2022-01-31
+- No significant changes since `0.6.0-beta.15`.
+
+
+## 0.6.0-beta.15 - 2022-01-21
+- No significant changes since `0.6.0-beta.14`.
+
+
+## 0.6.0-beta.14 - 2022-01-14
+- The `prefer_utf8` option introduced in `0.4.0` is now true by default. [#2583]
+
+[#2583]: https://github.com/actix/actix-web/pull/2583
+
+
+## 0.6.0-beta.13 - 2022-01-04
+- The `Files` service now rejects requests with URL paths that include `%2F` (decoded: `/`). [#2398]
+- The `Files` service now correctly decodes `%25` in the URL path to `%` for the file path. [#2398]
+- Minimum supported Rust version (MSRV) is now 1.54.
+
+[#2398]: https://github.com/actix/actix-web/pull/2398
+
+
+## 0.6.0-beta.12 - 2021-12-29
+- No significant changes since `0.6.0-beta.11`.
+
+
+## 0.6.0-beta.11 - 2021-12-27
+- No significant changes since `0.6.0-beta.10`.
+
+
+## 0.6.0-beta.10 - 2021-12-11
+- No significant changes since `0.6.0-beta.9`.
+
+
+## 0.6.0-beta.9 - 2021-11-22
+- Add crate feature `experimental-io-uring`, enabling async file I/O to be utilized. This feature is only available on Linux OSes with recent kernel versions. This feature is semver-exempt. [#2408]
+- Add `NamedFile::open_async`. [#2408]
+- Fix 304 Not Modified responses to omit the Content-Length header, as per the spec. [#2453]
+- The `Responder` impl for `NamedFile` now has a boxed future associated type. [#2408]
+- The `Service` impl for `NamedFileService` now has a boxed future associated type. [#2408]
+- Add `impl Clone` for `FilesService`. [#2408]
+
+[#2408]: https://github.com/actix/actix-web/pull/2408
+[#2453]: https://github.com/actix/actix-web/pull/2453
+
+
+## 0.6.0-beta.8 - 2021-10-20
+- Minimum supported Rust version (MSRV) is now 1.52.
+
+
+## 0.6.0-beta.7 - 2021-09-09
+- Minimum supported Rust version (MSRV) is now 1.51.
+
+
+## 0.6.0-beta.6 - 2021-06-26
+- Added `Files::path_filter()`. [#2274]
+- `Files::show_files_listing()` can now be used with `Files::index_file()` to show files listing as a fallback when the index file is not found. [#2228]
+
+[#2274]: https://github.com/actix/actix-web/pull/2274
+[#2228]: https://github.com/actix/actix-web/pull/2228
+
+
+## 0.6.0-beta.5 - 2021-06-17
+- `NamedFile` now implements `ServiceFactory` and `HttpServiceFactory` making it much more useful in routing. For example, it can be used directly as a default service. [#2135]
+- For symbolic links, `Content-Disposition` header no longer shows the filename of the original file. [#2156]
+- `Files::redirect_to_slash_directory()` now works as expected when used with `Files::show_files_listing()`. [#2225]
+- `application/{javascript, json, wasm}` mime type now have `inline` disposition by default. [#2257]
+
+[#2135]: https://github.com/actix/actix-web/pull/2135
+[#2156]: https://github.com/actix/actix-web/pull/2156
+[#2225]: https://github.com/actix/actix-web/pull/2225
+[#2257]: https://github.com/actix/actix-web/pull/2257
+
+
+## 0.6.0-beta.4 - 2021-04-02
+- Add support for `.guard` in `Files` to selectively filter `Files` services. [#2046]
+
+[#2046]: https://github.com/actix/actix-web/pull/2046
+
+
+## 0.6.0-beta.3 - 2021-03-09
+- No notable changes.
+
+
+## 0.6.0-beta.2 - 2021-02-10
+- Fix If-Modified-Since and If-Unmodified-Since to not compare using sub-second timestamps. [#1887]
+- Replace `v_htmlescape` with `askama_escape`. [#1953]
+
+[#1887]: https://github.com/actix/actix-web/pull/1887
+[#1953]: https://github.com/actix/actix-web/pull/1953
+
+
+## 0.6.0-beta.1 - 2021-01-07
+- `HttpRange::parse` now has its own error type.
+- Update `bytes` to `1.0`. [#1813]
+
+[#1813]: https://github.com/actix/actix-web/pull/1813
+
+
+## 0.5.0 - 2020-12-26
+- Optionally support hidden files/directories. [#1811]
+
+[#1811]: https://github.com/actix/actix-web/pull/1811
+
+
+## 0.4.1 - 2020-11-24
+- Clarify order of parameters in `Files::new` and improve docs.
+
+
+## 0.4.0 - 2020-10-06
+- Add `Files::prefer_utf8` option that adds UTF-8 charset on certain response types. [#1714]
+
+[#1714]: https://github.com/actix/actix-web/pull/1714
+
+
+## 0.3.0 - 2020-09-11
+- No significant changes from 0.3.0-beta.1.
+
+
+## 0.3.0-beta.1 - 2020-07-15
+- Update `v_htmlescape` to 0.10
+- Update `actix-web` and `actix-http` dependencies to beta.1
+
+
+## 0.3.0-alpha.1 - 2020-05-23
+- Update `actix-web` and `actix-http` dependencies to alpha
+- Fix some typos in the docs
+- Bump minimum supported Rust version to 1.40
+- Support sending Content-Length when Content-Range is specified [#1384]
+
+[#1384]: https://github.com/actix/actix-web/pull/1384
+
+
+## 0.2.1 - 2019-12-22
+- Use the same format for file URLs regardless of platforms
+
+
+## 0.2.0 - 2019-12-20
+- Fix BodyEncoding trait import #1220
+
+
+## 0.2.0-alpha.1 - 2019-12-07
+- Migrate to `std::future`
+
+
+## 0.1.7 - 2019-11-06
+- Add an additional `filename*` param in the `Content-Disposition` header of
+  `actix_files::NamedFile` to be more compatible. (#1151)
+
+## 0.1.6 - 2019-10-14
+- Add option to redirect to a slash-ended path `Files` #1132
+
+
+## 0.1.5 - 2019-10-08
+- Bump up `mime_guess` crate version to 2.0.1
+- Bump up `percent-encoding` crate version to 2.1
+- Allow user defined request guards for `Files` #1113
+
+
+## 0.1.4 - 2019-07-20
+- Allow to disable `Content-Disposition` header #686
+
+
+## 0.1.3 - 2019-06-28
+- Do not set `Content-Length` header, let actix-http set it #930
+
+
+## 0.1.2 - 2019-06-13
+- Content-Length is 0 for NamedFile HEAD request #914
+- Fix ring dependency from actix-web default features for #741
+
+
+## 0.1.1 - 2019-06-01
+- Static files are incorrectly served as both chunked and with length #812
+
+
+## 0.1.0 - 2019-05-25
+- NamedFile last-modified check always fails due to nano-seconds in file modified date #820
+
+
+## 0.1.0-beta.4 - 2019-05-12
+- Update actix-web to beta.4
+
+
+## 0.1.0-beta.1 - 2019-04-20
+- Update actix-web to beta.1
+
+
+## 0.1.0-alpha.6 - 2019-04-14
+- Update actix-web to alpha6
+
+
+## 0.1.0-alpha.4 - 2019-04-08
+- Update actix-web to alpha4
+
+
+## 0.1.0-alpha.2 - 2019-04-02
+- Add default handler support
+
+
+## 0.1.0-alpha.1 - 2019-03-28
+- Initial impl

actix-files/Cargo.toml

@@ -0,0 +1,48 @@
+[package]
+name = "actix-files"
+version = "0.6.0"
+authors = [
+    "Nikolay Kim <fafhrd91@gmail.com>",
+    "fakeshadow <24548779@qq.com>",
+    "Rob Ede <robjtede@icloud.com>",
+]
+description = "Static file serving for Actix Web"
+keywords = ["actix", "http", "async", "futures"]
+homepage = "https://actix.rs"
+repository = "https://github.com/actix/actix-web"
+categories = ["asynchronous", "web-programming::http-server"]
+license = "MIT OR Apache-2.0"
+edition = "2018"
+
+[lib]
+name = "actix_files"
+path = "src/lib.rs"
+
+[features]
+experimental-io-uring = ["actix-web/experimental-io-uring", "tokio-uring"]
+
+[dependencies]
+actix-http = "3"
+actix-service = "2"
+actix-utils = "3"
+actix-web = { version = "4", default-features = false }
+
+askama_escape = "0.10"
+bitflags = "1"
+bytes = "1"
+derive_more = "0.99.5"
+futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
+http-range = "0.1.4"
+log = "0.4"
+mime = "0.3"
+mime_guess = "2.0.1"
+percent-encoding = "2.1"
+pin-project-lite = "0.2.7"
+
+tokio-uring = { version = "0.2", optional = true, features = ["bytes"] }
+
+[dev-dependencies]
+actix-rt = "2.2"
+actix-test = "0.1.0-beta.13"
+actix-web = "4.0.0"
+tempfile = "3.2"

actix-files/LICENSE-APACHE

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

actix-files/LICENSE-MIT

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

actix-files/README.md

@@ -0,0 +1,18 @@
+# actix-files
+
+> Static file serving for Actix Web
+
+[![crates.io](https://img.shields.io/crates/v/actix-files?label=latest)](https://crates.io/crates/actix-files)
+[![Documentation](https://docs.rs/actix-files/badge.svg?version=0.6.0)](https://docs.rs/actix-files/0.6.0)
+[![Version](https://img.shields.io/badge/rustc-1.54+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.54.0.html)
+![License](https://img.shields.io/crates/l/actix-files.svg)
+<br />
+[![dependency status](https://deps.rs/crate/actix-files/0.6.0/status.svg)](https://deps.rs/crate/actix-files/0.6.0)
+[![Download](https://img.shields.io/crates/d/actix-files.svg)](https://crates.io/crates/actix-files)
+[![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+
+## Documentation & Resources
+
+- [API Documentation](https://docs.rs/actix-files)
+- [Example Project](https://github.com/actix/examples/tree/master/basics/static-files)
+- Minimum Supported Rust Version (MSRV): 1.54

actix-files/src/chunked.rs

@@ -0,0 +1,218 @@
+use std::{
+    cmp, fmt,
+    future::Future,
+    io,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use actix_web::{error::Error, web::Bytes};
+use futures_core::{ready, Stream};
+use pin_project_lite::pin_project;
+
+#[cfg(feature = "experimental-io-uring")]
+use bytes::BytesMut;
+
+use super::named::File;
+
+pin_project! {
+    /// Adapter to read a `std::file::File` in chunks.
+    #[doc(hidden)]
+    pub struct ChunkedReadFile<F, Fut> {
+        size: u64,
+        offset: u64,
+        #[pin]
+        state: ChunkedReadFileState<Fut>,
+        counter: u64,
+        callback: F,
+    }
+}
+
+#[cfg(not(feature = "experimental-io-uring"))]
+pin_project! {
+    #[project = ChunkedReadFileStateProj]
+    #[project_replace = ChunkedReadFileStateProjReplace]
+    enum ChunkedReadFileState<Fut> {
+        File { file: Option<File>, },
+        Future { #[pin] fut: Fut },
+    }
+}
+
+#[cfg(feature = "experimental-io-uring")]
+pin_project! {
+    #[project = ChunkedReadFileStateProj]
+    #[project_replace = ChunkedReadFileStateProjReplace]
+    enum ChunkedReadFileState<Fut> {
+        File { file: Option<(File, BytesMut)> },
+        Future { #[pin] fut: Fut },
+    }
+}
+
+impl<F, Fut> fmt::Debug for ChunkedReadFile<F, Fut> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("ChunkedReadFile")
+    }
+}
+
+pub(crate) fn new_chunked_read(
+    size: u64,
+    offset: u64,
+    file: File,
+) -> impl Stream<Item = Result<Bytes, Error>> {
+    ChunkedReadFile {
+        size,
+        offset,
+        #[cfg(not(feature = "experimental-io-uring"))]
+        state: ChunkedReadFileState::File { file: Some(file) },
+        #[cfg(feature = "experimental-io-uring")]
+        state: ChunkedReadFileState::File {
+            file: Some((file, BytesMut::new())),
+        },
+        counter: 0,
+        callback: chunked_read_file_callback,
+    }
+}
+
+#[cfg(not(feature = "experimental-io-uring"))]
+async fn chunked_read_file_callback(
+    mut file: File,
+    offset: u64,
+    max_bytes: usize,
+) -> Result<(File, Bytes), Error> {
+    use io::{Read as _, Seek as _};
+
+    let res = actix_web::web::block(move || {
+        let mut buf = Vec::with_capacity(max_bytes);
+
+        file.seek(io::SeekFrom::Start(offset))?;
+
+        let n_bytes = file.by_ref().take(max_bytes as u64).read_to_end(&mut buf)?;
+
+        if n_bytes == 0 {
+            Err(io::Error::from(io::ErrorKind::UnexpectedEof))
+        } else {
+            Ok((file, Bytes::from(buf)))
+        }
+    })
+    .await??;
+
+    Ok(res)
+}
+
+#[cfg(feature = "experimental-io-uring")]
+async fn chunked_read_file_callback(
+    file: File,
+    offset: u64,
+    max_bytes: usize,
+    mut bytes_mut: BytesMut,
+) -> io::Result<(File, Bytes, BytesMut)> {
+    bytes_mut.reserve(max_bytes);
+
+    let (res, mut bytes_mut) = file.read_at(bytes_mut, offset).await;
+    let n_bytes = res?;
+
+    if n_bytes == 0 {
+        return Err(io::ErrorKind::UnexpectedEof.into());
+    }
+
+    let bytes = bytes_mut.split_to(n_bytes).freeze();
+
+    Ok((file, bytes, bytes_mut))
+}
+
+#[cfg(feature = "experimental-io-uring")]
+impl<F, Fut> Stream for ChunkedReadFile<F, Fut>
+where
+    F: Fn(File, u64, usize, BytesMut) -> Fut,
+    Fut: Future<Output = io::Result<(File, Bytes, BytesMut)>>,
+{
+    type Item = Result<Bytes, Error>;
+
+    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        let mut this = self.as_mut().project();
+        match this.state.as_mut().project() {
+            ChunkedReadFileStateProj::File { file } => {
+                let size = *this.size;
+                let offset = *this.offset;
+                let counter = *this.counter;
+
+                if size == counter {
+                    Poll::Ready(None)
+                } else {
+                    let max_bytes = cmp::min(size.saturating_sub(counter), 65_536) as usize;
+
+                    let (file, bytes_mut) = file
+                        .take()
+                        .expect("ChunkedReadFile polled after completion");
+
+                    let fut = (this.callback)(file, offset, max_bytes, bytes_mut);
+
+                    this.state
+                        .project_replace(ChunkedReadFileState::Future { fut });
+
+                    self.poll_next(cx)
+                }
+            }
+            ChunkedReadFileStateProj::Future { fut } => {
+                let (file, bytes, bytes_mut) = ready!(fut.poll(cx))?;
+
+                this.state.project_replace(ChunkedReadFileState::File {
+                    file: Some((file, bytes_mut)),
+                });
+
+                *this.offset += bytes.len() as u64;
+                *this.counter += bytes.len() as u64;
+
+                Poll::Ready(Some(Ok(bytes)))
+            }
+        }
+    }
+}
+
+#[cfg(not(feature = "experimental-io-uring"))]
+impl<F, Fut> Stream for ChunkedReadFile<F, Fut>
+where
+    F: Fn(File, u64, usize) -> Fut,
+    Fut: Future<Output = Result<(File, Bytes), Error>>,
+{
+    type Item = Result<Bytes, Error>;
+
+    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        let mut this = self.as_mut().project();
+        match this.state.as_mut().project() {
+            ChunkedReadFileStateProj::File { file } => {
+                let size = *this.size;
+                let offset = *this.offset;
+                let counter = *this.counter;
+
+                if size == counter {
+                    Poll::Ready(None)
+                } else {
+                    let max_bytes = cmp::min(size.saturating_sub(counter), 65_536) as usize;
+
+                    let file = file
+                        .take()
+                        .expect("ChunkedReadFile polled after completion");
+
+                    let fut = (this.callback)(file, offset, max_bytes);
+
+                    this.state
+                        .project_replace(ChunkedReadFileState::Future { fut });
+
+                    self.poll_next(cx)
+                }
+            }
+            ChunkedReadFileStateProj::Future { fut } => {
+                let (file, bytes) = ready!(fut.poll(cx))?;
+
+                this.state
+                    .project_replace(ChunkedReadFileState::File { file: Some(file) });
+
+                *this.offset += bytes.len() as u64;
+                *this.counter += bytes.len() as u64;
+
+                Poll::Ready(Some(Ok(bytes)))
+            }
+        }
+    }
+}

actix-files/src/directory.rs

@@ -0,0 +1,121 @@
+use std::{fmt::Write, fs::DirEntry, io, path::Path, path::PathBuf};
+
+use actix_web::{dev::ServiceResponse, HttpRequest, HttpResponse};
+use askama_escape::{escape as escape_html_entity, Html};
+use percent_encoding::{utf8_percent_encode, CONTROLS};
+
+/// A directory; responds with the generated directory listing.
+#[derive(Debug)]
+pub struct Directory {
+    /// Base directory.
+    pub base: PathBuf,
+
+    /// Path of subdirectory to generate listing for.
+    pub path: PathBuf,
+}
+
+impl Directory {
+    /// Create a new directory
+    pub fn new(base: PathBuf, path: PathBuf) -> Directory {
+        Directory { base, path }
+    }
+
+    /// Is this entry visible from this directory?
+    pub fn is_visible(&self, entry: &io::Result<DirEntry>) -> bool {
+        if let Ok(ref entry) = *entry {
+            if let Some(name) = entry.file_name().to_str() {
+                if name.starts_with('.') {
+                    return false;
+                }
+            }
+            if let Ok(ref md) = entry.metadata() {
+                let ft = md.file_type();
+                return ft.is_dir() || ft.is_file() || ft.is_symlink();
+            }
+        }
+        false
+    }
+}
+
+pub(crate) type DirectoryRenderer =
+    dyn Fn(&Directory, &HttpRequest) -> Result<ServiceResponse, io::Error>;
+
+/// Returns percent encoded file URL path.
+macro_rules! encode_file_url {
+    ($path:ident) => {
+        utf8_percent_encode(&$path, CONTROLS)
+    };
+}
+
+/// Returns HTML entity encoded formatter.
+///
+/// ```plain
+/// " => &quot;
+/// & => &amp;
+/// ' => &#x27;
+/// < => &lt;
+/// > => &gt;
+/// / => &#x2f;
+/// ```
+macro_rules! encode_file_name {
+    ($entry:ident) => {
+        escape_html_entity(&$entry.file_name().to_string_lossy(), Html)
+    };
+}
+
+pub(crate) fn directory_listing(
+    dir: &Directory,
+    req: &HttpRequest,
+) -> Result<ServiceResponse, io::Error> {
+    let index_of = format!("Index of {}", req.path());
+    let mut body = String::new();
+    let base = Path::new(req.path());
+
+    for entry in dir.path.read_dir()? {
+        if dir.is_visible(&entry) {
+            let entry = entry.unwrap();
+            let p = match entry.path().strip_prefix(&dir.path) {
+                Ok(p) if cfg!(windows) => base.join(p).to_string_lossy().replace('\\', "/"),
+                Ok(p) => base.join(p).to_string_lossy().into_owned(),
+                Err(_) => continue,
+            };
+
+            // if file is a directory, add '/' to the end of the name
+            if let Ok(metadata) = entry.metadata() {
+                if metadata.is_dir() {
+                    let _ = write!(
+                        body,
+                        "<li><a href=\"{}\">{}/</a></li>",
+                        encode_file_url!(p),
+                        encode_file_name!(entry),
+                    );
+                } else {
+                    let _ = write!(
+                        body,
+                        "<li><a href=\"{}\">{}</a></li>",
+                        encode_file_url!(p),
+                        encode_file_name!(entry),
+                    );
+                }
+            } else {
+                continue;
+            }
+        }
+    }
+
+    let html = format!(
+        "<html>\
+         <head><title>{}</title></head>\
+         <body><h1>{}</h1>\
+         <ul>\
+         {}\
+         </ul></body>\n</html>",
+        index_of, index_of, body
+    );
+    Ok(ServiceResponse::new(
+        req.clone(),
+        HttpResponse::Ok()
+            .content_type("text/html; charset=utf-8")
+            .body(html),
+    ))
+}

actix-files/src/encoding.rs

@@ -0,0 +1,52 @@
+use mime::Mime;
+
+/// Transforms MIME `text/*` types into their UTF-8 equivalent, if supported.
+///
+/// MIME types that are converted
+/// - application/javascript
+/// - text/html
+/// - text/css
+/// - text/plain
+/// - text/csv
+/// - text/tab-separated-values
+pub(crate) fn equiv_utf8_text(ct: Mime) -> Mime {
+    // use (roughly) order of file-type popularity for a web server
+
+    if ct == mime::APPLICATION_JAVASCRIPT {
+        return mime::APPLICATION_JAVASCRIPT_UTF_8;
+    }
+
+    if ct == mime::TEXT_HTML {
+        return mime::TEXT_HTML_UTF_8;
+    }
+
+    if ct == mime::TEXT_CSS {
+        return mime::TEXT_CSS_UTF_8;
+    }
+
+    if ct == mime::TEXT_PLAIN {
+        return mime::TEXT_PLAIN_UTF_8;
+    }
+
+    if ct == mime::TEXT_CSV {
+        return mime::TEXT_CSV_UTF_8;
+    }
+
+    if ct == mime::TEXT_TAB_SEPARATED_VALUES {
+        return mime::TEXT_TAB_SEPARATED_VALUES_UTF_8;
+    }
+
+    ct
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_equiv_utf8_text() {
+        assert_eq!(equiv_utf8_text(mime::TEXT_PLAIN), mime::TEXT_PLAIN_UTF_8);
+        assert_eq!(equiv_utf8_text(mime::TEXT_XML), mime::TEXT_XML);
+        assert_eq!(equiv_utf8_text(mime::IMAGE_PNG), mime::IMAGE_PNG);
+    }
+}

actix-files/src/error.rs

@@ -0,0 +1,50 @@
+use actix_web::{http::StatusCode, ResponseError};
+use derive_more::Display;
+
+/// Errors which can occur when serving static files.
+#[derive(Display, Debug, PartialEq)]
+pub enum FilesError {
+    /// Path is not a directory
+    #[allow(dead_code)]
+    #[display(fmt = "Path is not a directory. Unable to serve static files")]
+    IsNotDirectory,
+
+    /// Cannot render directory
+    #[display(fmt = "Unable to render directory without index file")]
+    IsDirectory,
+}
+
+/// Return `NotFound` for `FilesError`
+impl ResponseError for FilesError {
+    fn status_code(&self) -> StatusCode {
+        StatusCode::NOT_FOUND
+    }
+}
+
+#[allow(clippy::enum_variant_names)]
+#[derive(Display, Debug, PartialEq)]
+#[non_exhaustive]
+pub enum UriSegmentError {
+    /// The segment started with the wrapped invalid character.
+    #[display(fmt = "The segment started with the wrapped invalid character")]
+    BadStart(char),
+
+    /// The segment contained the wrapped invalid character.
+    #[display(fmt = "The segment contained the wrapped invalid character")]
+    BadChar(char),
+
+    /// The segment ended with the wrapped invalid character.
+    #[display(fmt = "The segment ended with the wrapped invalid character")]
+    BadEnd(char),
+
+    /// The path is not a valid UTF-8 string after doing percent decoding.
+    #[display(fmt = "The path is not a valid UTF-8 string after percent-decoding")]
+    NotValidUtf8,
+}
+
+/// Return `BadRequest` for `UriSegmentError`
+impl ResponseError for UriSegmentError {
+    fn status_code(&self) -> StatusCode {
+        StatusCode::BAD_REQUEST
+    }
+}

actix-files/src/files.rs

@@ -0,0 +1,392 @@
+use std::{
+    cell::RefCell,
+    fmt, io,
+    path::{Path, PathBuf},
+    rc::Rc,
+};
+
+use actix_service::{boxed, IntoServiceFactory, ServiceFactory, ServiceFactoryExt};
+use actix_web::{
+    dev::{
+        AppService, HttpServiceFactory, RequestHead, ResourceDef, ServiceRequest,
+        ServiceResponse,
+    },
+    error::Error,
+    guard::Guard,
+    http::header::DispositionType,
+    HttpRequest,
+};
+use futures_core::future::LocalBoxFuture;
+
+use crate::{
+    directory_listing, named,
+    service::{FilesService, FilesServiceInner},
+    Directory, DirectoryRenderer, HttpNewService, MimeOverride, PathFilter,
+};
+
+/// Static files handling service.
+///
+/// `Files` service must be registered with `App::service()` method.
+///
+/// # Examples
+/// ```
+/// use actix_web::App;
+/// use actix_files::Files;
+///
+/// let app = App::new()
+///     .service(Files::new("/static", "."));
+/// ```
+pub struct Files {
+    mount_path: String,
+    directory: PathBuf,
+    index: Option<String>,
+    show_index: bool,
+    redirect_to_slash: bool,
+    default: Rc<RefCell<Option<Rc<HttpNewService>>>>,
+    renderer: Rc<DirectoryRenderer>,
+    mime_override: Option<Rc<MimeOverride>>,
+    path_filter: Option<Rc<PathFilter>>,
+    file_flags: named::Flags,
+    use_guards: Option<Rc<dyn Guard>>,
+    guards: Vec<Rc<dyn Guard>>,
+    hidden_files: bool,
+}
+
+impl fmt::Debug for Files {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("Files")
+    }
+}
+
+impl Clone for Files {
+    fn clone(&self) -> Self {
+        Self {
+            directory: self.directory.clone(),
+            index: self.index.clone(),
+            show_index: self.show_index,
+            redirect_to_slash: self.redirect_to_slash,
+            default: self.default.clone(),
+            renderer: self.renderer.clone(),
+            file_flags: self.file_flags,
+            mount_path: self.mount_path.clone(),
+            mime_override: self.mime_override.clone(),
+            path_filter: self.path_filter.clone(),
+            use_guards: self.use_guards.clone(),
+            guards: self.guards.clone(),
+            hidden_files: self.hidden_files,
+        }
+    }
+}
+
+impl Files {
+    /// Create new `Files` instance for a specified base directory.
+    ///
+    /// # Argument Order
+    /// The first argument (`mount_path`) is the root URL at which the static files are served.
+    /// For example, `/assets` will serve files at `example.com/assets/...`.
+    ///
+    /// The second argument (`serve_from`) is the location on disk at which files are loaded.
+    /// This can be a relative path. For example, `./` would serve files from the current
+    /// working directory.
+    ///
+    /// # Implementation Notes
+    /// If the mount path is set as the root path `/`, services registered after this one will
+    /// be inaccessible. Register more specific handlers and services first.
+    ///
+    /// `Files` utilizes the existing Tokio thread-pool for blocking filesystem operations.
+    /// The number of running threads is adjusted over time as needed, up to a maximum of 512 times
+    /// the number of server [workers](actix_web::HttpServer::workers), by default.
+    pub fn new<T: Into<PathBuf>>(mount_path: &str, serve_from: T) -> Files {
+        let orig_dir = serve_from.into();
+        let dir = match orig_dir.canonicalize() {
+            Ok(canon_dir) => canon_dir,
+            Err(_) => {
+                log::error!("Specified path is not a directory: {:?}", orig_dir);
+                PathBuf::new()
+            }
+        };
+
+        Files {
+            mount_path: mount_path.trim_end_matches('/').to_owned(),
+            directory: dir,
+            index: None,
+            show_index: false,
+            redirect_to_slash: false,
+            default: Rc::new(RefCell::new(None)),
+            renderer: Rc::new(directory_listing),
+            mime_override: None,
+            path_filter: None,
+            file_flags: named::Flags::default(),
+            use_guards: None,
+            guards: Vec::new(),
+            hidden_files: false,
+        }
+    }
+
+    /// Show files listing for directories.
+    ///
+    /// By default show files listing is disabled.
+    ///
+    /// When used with [`Files::index_file()`], files listing is shown as a fallback
+    /// when the index file is not found.
+    pub fn show_files_listing(mut self) -> Self {
+        self.show_index = true;
+        self
+    }
+
+    /// Redirects to a slash-ended path when browsing a directory.
+    ///
+    /// By default never redirect.
+    pub fn redirect_to_slash_directory(mut self) -> Self {
+        self.redirect_to_slash = true;
+        self
+    }
+
+    /// Set custom directory renderer
+    pub fn files_listing_renderer<F>(mut self, f: F) -> Self
+    where
+        for<'r, 's> F:
+            Fn(&'r Directory, &'s HttpRequest) -> Result<ServiceResponse, io::Error> + 'static,
+    {
+        self.renderer = Rc::new(f);
+        self
+    }
+
+    /// Specifies mime override callback
+    pub fn mime_override<F>(mut self, f: F) -> Self
+    where
+        F: Fn(&mime::Name<'_>) -> DispositionType + 'static,
+    {
+        self.mime_override = Some(Rc::new(f));
+        self
+    }
+
+    /// Sets path filtering closure.
+    ///
+    /// The path provided to the closure is relative to `serve_from` path.
+    /// You can safely join this path with the `serve_from` path to get the real path.
+    /// However, the real path may not exist since the filter is called before checking path existence.
+    ///
+    /// When a path doesn't pass the filter, [`Files::default_handler`] is called if set, otherwise,
+    /// `404 Not Found` is returned.
+    ///
+    /// # Examples
+    /// ```
+    /// use std::path::Path;
+    /// use actix_files::Files;
+    ///
+    /// // prevent searching subdirectories and following symlinks
+    /// let files_service = Files::new("/", "./static").path_filter(|path, _| {
+    ///     path.components().count() == 1
+    ///         && Path::new("./static")
+    ///             .join(path)
+    ///             .symlink_metadata()
+    ///             .map(|m| !m.file_type().is_symlink())
+    ///             .unwrap_or(false)
+    /// });
+    /// ```
+    pub fn path_filter<F>(mut self, f: F) -> Self
+    where
+        F: Fn(&Path, &RequestHead) -> bool + 'static,
+    {
+        self.path_filter = Some(Rc::new(f));
+        self
+    }
+
+    /// Set index file
+    ///
+    /// Shows specific index file for directories instead of
+    /// showing files listing.
+    ///
+    /// If the index file is not found, files listing is shown as a fallback if
+    /// [`Files::show_files_listing()`] is set.
+    pub fn index_file<T: Into<String>>(mut self, index: T) -> Self {
+        self.index = Some(index.into());
+        self
+    }
+
+    /// Specifies whether to use ETag or not.
+    ///
+    /// Default is true.
+    pub fn use_etag(mut self, value: bool) -> Self {
+        self.file_flags.set(named::Flags::ETAG, value);
+        self
+    }
+
+    /// Specifies whether to use Last-Modified or not.
+    ///
+    /// Default is true.
+    pub fn use_last_modified(mut self, value: bool) -> Self {
+        self.file_flags.set(named::Flags::LAST_MD, value);
+        self
+    }
+
+    /// Specifies whether text responses should signal a UTF-8 encoding.
+    ///
+    /// Default is false (but will default to true in a future version).
+    pub fn prefer_utf8(mut self, value: bool) -> Self {
+        self.file_flags.set(named::Flags::PREFER_UTF8, value);
+        self
+    }
+
+    /// Adds a routing guard.
+    ///
+    /// Use this to allow multiple chained file services that respond to strictly different
+    /// properties of a request. Due to the way routing works, if a guard check returns true and the
+    /// request starts being handled by the file service, it will not be able to back-out and try
+    /// the next service, you will simply get a 404 (or 405) error response.
+    ///
+    /// To allow `POST` requests to retrieve files, see [`Files::use_guards`].
+    ///
+    /// # Examples
+    /// ```
+    /// use actix_web::{guard::Header, App};
+    /// use actix_files::Files;
+    ///
+    /// App::new().service(
+    ///     Files::new("/","/my/site/files")
+    ///         .guard(Header("Host", "example.com"))
+    /// );
+    /// ```
+    pub fn guard<G: Guard + 'static>(mut self, guard: G) -> Self {
+        self.guards.push(Rc::new(guard));
+        self
+    }
+
+    /// Specifies guard to check before fetching directory listings or files.
+    ///
+    /// Note that this guard has no effect on routing; it's main use is to guard on the request's
+    /// method just before serving the file, only allowing `GET` and `HEAD` requests by default.
+    /// See [`Files::guard`] for routing guards.
+    pub fn method_guard<G: Guard + 'static>(mut self, guard: G) -> Self {
+        self.use_guards = Some(Rc::new(guard));
+        self
+    }
+
+    /// See [`Files::method_guard`].
+    #[doc(hidden)]
+    #[deprecated(since = "0.6.0", note = "Renamed to `method_guard`.")]
+    pub fn use_guards<G: Guard + 'static>(self, guard: G) -> Self {
+        self.method_guard(guard)
+    }
+
+    /// Disable `Content-Disposition` header.
+    ///
+    /// By default Content-Disposition` header is enabled.
+    pub fn disable_content_disposition(mut self) -> Self {
+        self.file_flags.remove(named::Flags::CONTENT_DISPOSITION);
+        self
+    }
+
+    /// Sets default handler which is used when no matched file could be found.
+    ///
+    /// # Examples
+    /// Setting a fallback static file handler:
+    /// ```
+    /// use actix_files::{Files, NamedFile};
+    /// use actix_web::dev::{ServiceRequest, ServiceResponse, fn_service};
+    ///
+    /// # fn run() -> Result<(), actix_web::Error> {
+    /// let files = Files::new("/", "./static")
+    ///     .index_file("index.html")
+    ///     .default_handler(fn_service(|req: ServiceRequest| async {
+    ///         let (req, _) = req.into_parts();
+    ///         let file = NamedFile::open_async("./static/404.html").await?;
+    ///         let res = file.into_response(&req);
+    ///         Ok(ServiceResponse::new(req, res))
+    ///     }));
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn default_handler<F, U>(mut self, f: F) -> Self
+    where
+        F: IntoServiceFactory<U, ServiceRequest>,
+        U: ServiceFactory<
+                ServiceRequest,
+                Config = (),
+                Response = ServiceResponse,
+                Error = Error,
+            > + 'static,
+    {
+        // create and configure default resource
+        self.default = Rc::new(RefCell::new(Some(Rc::new(boxed::factory(
+            f.into_factory().map_init_err(|_| ()),
+        )))));
+
+        self
+    }
+
+    /// Enables serving hidden files and directories, allowing a leading dots in url fragments.
+    pub fn use_hidden_files(mut self) -> Self {
+        self.hidden_files = true;
+        self
+    }
+}
+
+impl HttpServiceFactory for Files {
+    fn register(mut self, config: &mut AppService) {
+        let guards = if self.guards.is_empty() {
+            None
+        } else {
+            let guards = std::mem::take(&mut self.guards);
+            Some(
+                guards
+                    .into_iter()
+                    .map(|guard| -> Box<dyn Guard> { Box::new(guard) })
+                    .collect::<Vec<_>>(),
+            )
+        };
+
+        if self.default.borrow().is_none() {
+            *self.default.borrow_mut() = Some(config.default_service());
+        }
+
+        let rdef = if config.is_root() {
+            ResourceDef::root_prefix(&self.mount_path)
+        } else {
+            ResourceDef::prefix(&self.mount_path)
+        };
+
+        config.register_service(rdef, guards, self, None)
+    }
+}
+
+impl ServiceFactory<ServiceRequest> for Files {
+    type Response = ServiceResponse;
+    type Error = Error;
+    type Config = ();
+    type Service = FilesService;
+    type InitError = ();
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        let mut inner = FilesServiceInner {
+            directory: self.directory.clone(),
+            index: self.index.clone(),
+            show_index: self.show_index,
+            redirect_to_slash: self.redirect_to_slash,
+            default: None,
+            renderer: self.renderer.clone(),
+            mime_override: self.mime_override.clone(),
+            path_filter: self.path_filter.clone(),
+            file_flags: self.file_flags,
+            guards: self.use_guards.clone(),
+            hidden_files: self.hidden_files,
+        };
+
+        if let Some(ref default) = *self.default.borrow() {
+            let fut = default.new_service(());
+            Box::pin(async {
+                match fut.await {
+                    Ok(default) => {
+                        inner.default = Some(default);
+                        Ok(FilesService(Rc::new(inner)))
+                    }
+                    Err(_) => Err(()),
+                }
+            })
+        } else {
+            Box::pin(async move { Ok(FilesService(Rc::new(inner))) })
+        }
+    }
+}

actix-files/src/lib.rs

@@ -0,0 +1,989 @@
+//! Static file serving for Actix Web.
+//!
+//! Provides a non-blocking service for serving static files from disk.
+//!
+//! # Examples
+//! ```
+//! use actix_web::App;
+//! use actix_files::Files;
+//!
+//! let app = App::new()
+//!     .service(Files::new("/static", ".").prefer_utf8(true));
+//! ```
+
+#![deny(rust_2018_idioms, nonstandard_style)]
+#![warn(future_incompatible, missing_docs, missing_debug_implementations)]
+
+use actix_service::boxed::{BoxService, BoxServiceFactory};
+use actix_web::{
+    dev::{RequestHead, ServiceRequest, ServiceResponse},
+    error::Error,
+    http::header::DispositionType,
+};
+use mime_guess::from_ext;
+use std::path::Path;
+
+mod chunked;
+mod directory;
+mod encoding;
+mod error;
+mod files;
+mod named;
+mod path_buf;
+mod range;
+mod service;
+
+pub use self::chunked::ChunkedReadFile;
+pub use self::directory::Directory;
+pub use self::files::Files;
+pub use self::named::NamedFile;
+pub use self::range::HttpRange;
+pub use self::service::FilesService;
+
+use self::directory::{directory_listing, DirectoryRenderer};
+use self::error::FilesError;
+use self::path_buf::PathBufWrap;
+
+type HttpService = BoxService<ServiceRequest, ServiceResponse, Error>;
+type HttpNewService = BoxServiceFactory<(), ServiceRequest, ServiceResponse, Error, ()>;
+
+/// Return the MIME type associated with a filename extension (case-insensitive).
+/// If `ext` is empty or no associated type for the extension was found, returns
+/// the type `application/octet-stream`.
+#[inline]
+pub fn file_extension_to_mime(ext: &str) -> mime::Mime {
+    from_ext(ext).first_or_octet_stream()
+}
+
+type MimeOverride = dyn Fn(&mime::Name<'_>) -> DispositionType;
+
+type PathFilter = dyn Fn(&Path, &RequestHead) -> bool;
+
+#[cfg(test)]
+mod tests {
+    use std::{
+        fs::{self},
+        ops::Add,
+        time::{Duration, SystemTime},
+    };
+
+    use actix_web::{
+        dev::ServiceFactory,
+        guard,
+        http::{
+            header::{self, ContentDisposition, DispositionParam, DispositionType},
+            Method, StatusCode,
+        },
+        middleware::Compress,
+        test::{self, TestRequest},
+        web::{self, Bytes},
+        App, HttpResponse, Responder,
+    };
+
+    use super::*;
+    use crate::named::File;
+
+    #[actix_web::test]
+    async fn test_file_extension_to_mime() {
+        let m = file_extension_to_mime("");
+        assert_eq!(m, mime::APPLICATION_OCTET_STREAM);
+
+        let m = file_extension_to_mime("jpg");
+        assert_eq!(m, mime::IMAGE_JPEG);
+
+        let m = file_extension_to_mime("invalid extension!!");
+        assert_eq!(m, mime::APPLICATION_OCTET_STREAM);
+
+        let m = file_extension_to_mime("");
+        assert_eq!(m, mime::APPLICATION_OCTET_STREAM);
+    }
+
+    #[actix_rt::test]
+    async fn test_if_modified_since_without_if_none_match() {
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let since = header::HttpDate::from(SystemTime::now().add(Duration::from_secs(60)));
+
+        let req = TestRequest::default()
+            .insert_header((header::IF_MODIFIED_SINCE, since))
+            .to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(resp.status(), StatusCode::NOT_MODIFIED);
+    }
+
+    #[actix_rt::test]
+    async fn test_if_modified_since_without_if_none_match_same() {
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let since = file.last_modified().unwrap();
+
+        let req = TestRequest::default()
+            .insert_header((header::IF_MODIFIED_SINCE, since))
+            .to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(resp.status(), StatusCode::NOT_MODIFIED);
+    }
+
+    #[actix_rt::test]
+    async fn test_if_modified_since_with_if_none_match() {
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let since = header::HttpDate::from(SystemTime::now().add(Duration::from_secs(60)));
+
+        let req = TestRequest::default()
+            .insert_header((header::IF_NONE_MATCH, "miss_etag"))
+            .insert_header((header::IF_MODIFIED_SINCE, since))
+            .to_http_request();
+        let resp = file.respond_to(&req);
+        assert_ne!(resp.status(), StatusCode::NOT_MODIFIED);
+    }
+
+    #[actix_rt::test]
+    async fn test_if_unmodified_since() {
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let since = file.last_modified().unwrap();
+
+        let req = TestRequest::default()
+            .insert_header((header::IF_UNMODIFIED_SINCE, since))
+            .to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(resp.status(), StatusCode::OK);
+    }
+
+    #[actix_rt::test]
+    async fn test_if_unmodified_since_failed() {
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let since = header::HttpDate::from(SystemTime::UNIX_EPOCH);
+
+        let req = TestRequest::default()
+            .insert_header((header::IF_UNMODIFIED_SINCE, since))
+            .to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(resp.status(), StatusCode::PRECONDITION_FAILED);
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_text() {
+        assert!(NamedFile::open_async("test--").await.is_err());
+        let mut file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/x-toml"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"Cargo.toml\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_content_disposition() {
+        assert!(NamedFile::open_async("test--").await.is_err());
+        let mut file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"Cargo.toml\""
+        );
+
+        let file = NamedFile::open_async("Cargo.toml")
+            .await
+            .unwrap()
+            .disable_content_disposition();
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert!(resp.headers().get(header::CONTENT_DISPOSITION).is_none());
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_non_ascii_file_name() {
+        let file = {
+            #[cfg(feature = "experimental-io-uring")]
+            {
+                crate::named::File::open("Cargo.toml").await.unwrap()
+            }
+
+            #[cfg(not(feature = "experimental-io-uring"))]
+            {
+                crate::named::File::open("Cargo.toml").unwrap()
+            }
+        };
+
+        let mut file = NamedFile::from_file(file, "貨物.toml").unwrap();
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/x-toml"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"貨物.toml\"; filename*=UTF-8''%E8%B2%A8%E7%89%A9.toml"
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_set_content_type() {
+        let mut file = NamedFile::open_async("Cargo.toml")
+            .await
+            .unwrap()
+            .set_content_type(mime::TEXT_XML);
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/xml"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"Cargo.toml\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_image() {
+        let mut file = NamedFile::open_async("tests/test.png").await.unwrap();
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "image/png"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"test.png\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_javascript() {
+        let file = NamedFile::open_async("tests/test.js").await.unwrap();
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "application/javascript; charset=utf-8"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"test.js\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_image_attachment() {
+        let cd = ContentDisposition {
+            disposition: DispositionType::Attachment,
+            parameters: vec![DispositionParam::Filename(String::from("test.png"))],
+        };
+        let mut file = NamedFile::open_async("tests/test.png")
+            .await
+            .unwrap()
+            .set_content_disposition(cd);
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "image/png"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "attachment; filename=\"test.png\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_binary() {
+        let mut file = NamedFile::open_async("tests/test.binary").await.unwrap();
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "application/octet-stream"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "attachment; filename=\"test.binary\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_status_code_text() {
+        let mut file = NamedFile::open_async("Cargo.toml")
+            .await
+            .unwrap()
+            .set_status_code(StatusCode::NOT_FOUND);
+        {
+            file.file();
+            let _f: &File = &file;
+        }
+        {
+            let _f: &mut File = &mut file;
+        }
+
+        let req = TestRequest::default().to_http_request();
+        let resp = file.respond_to(&req);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/x-toml"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"Cargo.toml\""
+        );
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_mime_override() {
+        fn all_attachment(_: &mime::Name<'_>) -> DispositionType {
+            DispositionType::Attachment
+        }
+
+        let srv = test::init_service(
+            App::new().service(
+                Files::new("/", ".")
+                    .mime_override(all_attachment)
+                    .index_file("Cargo.toml"),
+            ),
+        )
+        .await;
+
+        let request = TestRequest::get().uri("/").to_request();
+        let response = test::call_service(&srv, request).await;
+        assert_eq!(response.status(), StatusCode::OK);
+
+        let content_disposition = response
+            .headers()
+            .get(header::CONTENT_DISPOSITION)
+            .expect("To have CONTENT_DISPOSITION");
+        let content_disposition = content_disposition
+            .to_str()
+            .expect("Convert CONTENT_DISPOSITION to str");
+        assert_eq!(content_disposition, "attachment; filename=\"Cargo.toml\"");
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_ranges_status_code() {
+        let srv = test::init_service(
+            App::new().service(Files::new("/test", ".").index_file("Cargo.toml")),
+        )
+        .await;
+
+        // Valid range header
+        let request = TestRequest::get()
+            .uri("/t%65st/Cargo.toml")
+            .insert_header((header::RANGE, "bytes=10-20"))
+            .to_request();
+        let response = test::call_service(&srv, request).await;
+        assert_eq!(response.status(), StatusCode::PARTIAL_CONTENT);
+
+        // Invalid range header
+        let request = TestRequest::get()
+            .uri("/t%65st/Cargo.toml")
+            .insert_header((header::RANGE, "bytes=1-0"))
+            .to_request();
+        let response = test::call_service(&srv, request).await;
+
+        assert_eq!(response.status(), StatusCode::RANGE_NOT_SATISFIABLE);
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_content_range_headers() {
+        let srv = actix_test::start(|| App::new().service(Files::new("/", ".")));
+
+        // Valid range header
+        let response = srv
+            .get("/tests/test.binary")
+            .insert_header((header::RANGE, "bytes=10-20"))
+            .send()
+            .await
+            .unwrap();
+        let content_range = response.headers().get(header::CONTENT_RANGE).unwrap();
+        assert_eq!(content_range.to_str().unwrap(), "bytes 10-20/100");
+
+        // Invalid range header
+        let response = srv
+            .get("/tests/test.binary")
+            .insert_header((header::RANGE, "bytes=10-5"))
+            .send()
+            .await
+            .unwrap();
+        let content_range = response.headers().get(header::CONTENT_RANGE).unwrap();
+        assert_eq!(content_range.to_str().unwrap(), "bytes */100");
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_content_length_headers() {
+        let srv = actix_test::start(|| App::new().service(Files::new("/", ".")));
+
+        // Valid range header
+        let response = srv
+            .get("/tests/test.binary")
+            .insert_header((header::RANGE, "bytes=10-20"))
+            .send()
+            .await
+            .unwrap();
+        let content_length = response.headers().get(header::CONTENT_LENGTH).unwrap();
+        assert_eq!(content_length.to_str().unwrap(), "11");
+
+        // Valid range header, starting from 0
+        let response = srv
+            .get("/tests/test.binary")
+            .insert_header((header::RANGE, "bytes=0-20"))
+            .send()
+            .await
+            .unwrap();
+        let content_length = response.headers().get(header::CONTENT_LENGTH).unwrap();
+        assert_eq!(content_length.to_str().unwrap(), "21");
+
+        // Without range header
+        let mut response = srv.get("/tests/test.binary").send().await.unwrap();
+        let content_length = response.headers().get(header::CONTENT_LENGTH).unwrap();
+        assert_eq!(content_length.to_str().unwrap(), "100");
+
+        // Should be no transfer-encoding
+        let transfer_encoding = response.headers().get(header::TRANSFER_ENCODING);
+        assert!(transfer_encoding.is_none());
+
+        // Check file contents
+        let bytes = response.body().await.unwrap();
+        let data = web::Bytes::from(fs::read("tests/test.binary").unwrap());
+        assert_eq!(bytes, data);
+    }
+
+    #[actix_rt::test]
+    async fn test_head_content_length_headers() {
+        let srv = actix_test::start(|| App::new().service(Files::new("/", ".")));
+
+        let response = srv.head("/tests/test.binary").send().await.unwrap();
+
+        let content_length = response
+            .headers()
+            .get(header::CONTENT_LENGTH)
+            .unwrap()
+            .to_str()
+            .unwrap();
+
+        assert_eq!(content_length, "100");
+    }
+
+    #[actix_rt::test]
+    async fn test_static_files_with_spaces() {
+        let srv = test::init_service(
+            App::new().service(Files::new("/", ".").index_file("Cargo.toml")),
+        )
+        .await;
+        let request = TestRequest::get()
+            .uri("/tests/test%20space.binary")
+            .to_request();
+        let response = test::call_service(&srv, request).await;
+        assert_eq!(response.status(), StatusCode::OK);
+
+        let bytes = test::read_body(response).await;
+        let data = web::Bytes::from(fs::read("tests/test space.binary").unwrap());
+        assert_eq!(bytes, data);
+    }
+
+    #[actix_rt::test]
+    async fn test_files_not_allowed() {
+        let srv = test::init_service(App::new().service(Files::new("/", "."))).await;
+
+        let req = TestRequest::default()
+            .uri("/Cargo.toml")
+            .method(Method::POST)
+            .to_request();
+
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
+
+        let srv = test::init_service(App::new().service(Files::new("/", "."))).await;
+        let req = TestRequest::default()
+            .method(Method::PUT)
+            .uri("/Cargo.toml")
+            .to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
+    }
+
+    #[actix_rt::test]
+    async fn test_files_guards() {
+        let srv = test::init_service(
+            App::new().service(Files::new("/", ".").method_guard(guard::Post())),
+        )
+        .await;
+
+        let req = TestRequest::default()
+            .uri("/Cargo.toml")
+            .method(Method::POST)
+            .to_request();
+
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::OK);
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_content_encoding() {
+        let srv = test::init_service(App::new().wrap(Compress::default()).service(
+            web::resource("/").to(|| async {
+                NamedFile::open_async("Cargo.toml")
+                    .await
+                    .unwrap()
+                    .set_content_encoding(header::ContentEncoding::Identity)
+            }),
+        ))
+        .await;
+
+        let request = TestRequest::get()
+            .uri("/")
+            .insert_header((header::ACCEPT_ENCODING, "gzip"))
+            .to_request();
+        let res = test::call_service(&srv, request).await;
+        assert_eq!(res.status(), StatusCode::OK);
+        assert!(res.headers().contains_key(header::CONTENT_ENCODING));
+        assert!(!test::read_body(res).await.is_empty());
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_content_encoding_gzip() {
+        let srv = test::init_service(App::new().wrap(Compress::default()).service(
+            web::resource("/").to(|| async {
+                NamedFile::open_async("Cargo.toml")
+                    .await
+                    .unwrap()
+                    .set_content_encoding(header::ContentEncoding::Gzip)
+            }),
+        ))
+        .await;
+
+        let request = TestRequest::get()
+            .uri("/")
+            .insert_header((header::ACCEPT_ENCODING, "gzip"))
+            .to_request();
+        let res = test::call_service(&srv, request).await;
+        assert_eq!(res.status(), StatusCode::OK);
+        assert_eq!(
+            res.headers()
+                .get(header::CONTENT_ENCODING)
+                .unwrap()
+                .to_str()
+                .unwrap(),
+            "gzip"
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_allowed_method() {
+        let req = TestRequest::default().method(Method::GET).to_http_request();
+        let file = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let resp = file.respond_to(&req);
+        assert_eq!(resp.status(), StatusCode::OK);
+    }
+
+    #[actix_rt::test]
+    async fn test_static_files() {
+        let srv =
+            test::init_service(App::new().service(Files::new("/", ".").show_files_listing()))
+                .await;
+        let req = TestRequest::with_uri("/missing").to_request();
+
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+
+        let srv = test::init_service(App::new().service(Files::new("/", "."))).await;
+
+        let req = TestRequest::default().to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+
+        let srv =
+            test::init_service(App::new().service(Files::new("/", ".").show_files_listing()))
+                .await;
+        let req = TestRequest::with_uri("/tests").to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/html; charset=utf-8"
+        );
+
+        let bytes = test::read_body(resp).await;
+        assert!(format!("{:?}", bytes).contains("/tests/test.png"));
+    }
+
+    #[actix_rt::test]
+    async fn test_redirect_to_slash_directory() {
+        // should not redirect if no index and files listing is disabled
+        let srv = test::init_service(
+            App::new().service(Files::new("/", ".").redirect_to_slash_directory()),
+        )
+        .await;
+        let req = TestRequest::with_uri("/tests").to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+
+        // should redirect if index present
+        let srv = test::init_service(
+            App::new().service(
+                Files::new("/", ".")
+                    .index_file("test.png")
+                    .redirect_to_slash_directory(),
+            ),
+        )
+        .await;
+        let req = TestRequest::with_uri("/tests").to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::FOUND);
+
+        // should redirect if files listing is enabled
+        let srv = test::init_service(
+            App::new().service(
+                Files::new("/", ".")
+                    .show_files_listing()
+                    .redirect_to_slash_directory(),
+            ),
+        )
+        .await;
+        let req = TestRequest::with_uri("/tests").to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::FOUND);
+
+        // should not redirect if the path is wrong
+        let req = TestRequest::with_uri("/not_existing").to_request();
+        let resp = test::call_service(&srv, req).await;
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_static_files_bad_directory() {
+        let service = Files::new("/", "./missing").new_service(()).await.unwrap();
+
+        let req = TestRequest::with_uri("/").to_srv_request();
+        let resp = test::call_service(&service, req).await;
+
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_default_handler_file_missing() {
+        let st = Files::new("/", ".")
+            .default_handler(|req: ServiceRequest| async {
+                Ok(req.into_response(HttpResponse::Ok().body("default content")))
+            })
+            .new_service(())
+            .await
+            .unwrap();
+        let req = TestRequest::with_uri("/missing").to_srv_request();
+        let resp = test::call_service(&st, req).await;
+
+        assert_eq!(resp.status(), StatusCode::OK);
+        let bytes = test::read_body(resp).await;
+        assert_eq!(bytes, web::Bytes::from_static(b"default content"));
+    }
+
+    #[actix_rt::test]
+    async fn test_serve_index_nested() {
+        let service = Files::new(".", ".")
+            .index_file("lib.rs")
+            .new_service(())
+            .await
+            .unwrap();
+
+        let req = TestRequest::default().uri("/src").to_srv_request();
+        let resp = test::call_service(&service, req).await;
+
+        assert_eq!(resp.status(), StatusCode::OK);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/x-rust"
+        );
+        assert_eq!(
+            resp.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"lib.rs\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn integration_serve_index() {
+        let srv = test::init_service(
+            App::new().service(Files::new("test", ".").index_file("Cargo.toml")),
+        )
+        .await;
+
+        let req = TestRequest::get().uri("/test").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+
+        let bytes = test::read_body(res).await;
+
+        let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+        assert_eq!(bytes, data);
+
+        let req = TestRequest::get().uri("/test/").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+
+        let bytes = test::read_body(res).await;
+        let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+        assert_eq!(bytes, data);
+
+        // nonexistent index file
+        let req = TestRequest::get().uri("/test/unknown").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+
+        let req = TestRequest::get().uri("/test/unknown/").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn integration_percent_encoded() {
+        let srv = test::init_service(
+            App::new().service(Files::new("test", ".").index_file("Cargo.toml")),
+        )
+        .await;
+
+        let req = TestRequest::get().uri("/test/%43argo.toml").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+
+        // `%2F` == `/`
+        let req = TestRequest::get().uri("/test%2Ftest.binary").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+
+        let req = TestRequest::get().uri("/test/Cargo.toml%00").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_percent_encoding_2() {
+        let tmpdir = tempfile::tempdir().unwrap();
+        let filename = match cfg!(unix) {
+            true => "ض:?#[]{}<>()@!$&'`|*+,;= %20.test",
+            false => "ض#[]{}()@!$&'`+,;= %20.test",
+        };
+        let filename_encoded = filename
+            .as_bytes()
+            .iter()
+            .map(|c| format!("%{:02X}", c))
+            .collect::<String>();
+        std::fs::File::create(tmpdir.path().join(filename)).unwrap();
+
+        let srv = test::init_service(App::new().service(Files::new("", tmpdir.path()))).await;
+
+        let req = TestRequest::get()
+            .uri(&format!("/{}", filename_encoded))
+            .to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+    }
+
+    #[actix_rt::test]
+    async fn test_serve_named_file() {
+        let factory = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let srv = test::init_service(App::new().service(factory)).await;
+
+        let req = TestRequest::get().uri("/Cargo.toml").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+
+        let bytes = test::read_body(res).await;
+        let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+        assert_eq!(bytes, data);
+
+        let req = TestRequest::get().uri("/test/unknown").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_serve_named_file_prefix() {
+        let factory = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let srv =
+            test::init_service(App::new().service(web::scope("/test").service(factory))).await;
+
+        let req = TestRequest::get().uri("/test/Cargo.toml").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+
+        let bytes = test::read_body(res).await;
+        let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+        assert_eq!(bytes, data);
+
+        let req = TestRequest::get().uri("/Cargo.toml").to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_named_file_default_service() {
+        let factory = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let srv = test::init_service(App::new().default_service(factory)).await;
+
+        for route in ["/foobar", "/baz", "/"].iter() {
+            let req = TestRequest::get().uri(route).to_request();
+            let res = test::call_service(&srv, req).await;
+            assert_eq!(res.status(), StatusCode::OK);
+
+            let bytes = test::read_body(res).await;
+            let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+            assert_eq!(bytes, data);
+        }
+    }
+
+    #[actix_rt::test]
+    async fn test_default_handler_named_file() {
+        let factory = NamedFile::open_async("Cargo.toml").await.unwrap();
+        let st = Files::new("/", ".")
+            .default_handler(factory)
+            .new_service(())
+            .await
+            .unwrap();
+        let req = TestRequest::with_uri("/missing").to_srv_request();
+        let resp = test::call_service(&st, req).await;
+
+        assert_eq!(resp.status(), StatusCode::OK);
+        let bytes = test::read_body(resp).await;
+        let data = Bytes::from(fs::read("Cargo.toml").unwrap());
+        assert_eq!(bytes, data);
+    }
+
+    #[actix_rt::test]
+    async fn test_symlinks() {
+        let srv = test::init_service(App::new().service(Files::new("test", "."))).await;
+
+        let req = TestRequest::get()
+            .uri("/test/tests/symlink-test.png")
+            .to_request();
+        let res = test::call_service(&srv, req).await;
+        assert_eq!(res.status(), StatusCode::OK);
+        assert_eq!(
+            res.headers().get(header::CONTENT_DISPOSITION).unwrap(),
+            "inline; filename=\"symlink-test.png\""
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_index_with_show_files_listing() {
+        let service = Files::new(".", ".")
+            .index_file("lib.rs")
+            .show_files_listing()
+            .new_service(())
+            .await
+            .unwrap();
+
+        // Serve the index if exists
+        let req = TestRequest::default().uri("/src").to_srv_request();
+        let resp = test::call_service(&service, req).await;
+        assert_eq!(resp.status(), StatusCode::OK);
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/x-rust"
+        );
+
+        // Show files listing, otherwise.
+        let req = TestRequest::default().uri("/tests").to_srv_request();
+        let resp = test::call_service(&service, req).await;
+        assert_eq!(
+            resp.headers().get(header::CONTENT_TYPE).unwrap(),
+            "text/html; charset=utf-8"
+        );
+        let bytes = test::read_body(resp).await;
+        assert!(format!("{:?}", bytes).contains("/tests/test.png"));
+    }
+
+    #[actix_rt::test]
+    async fn test_path_filter() {
+        // prevent searching subdirectories
+        let st = Files::new("/", ".")
+            .path_filter(|path, _| path.components().count() == 1)
+            .new_service(())
+            .await
+            .unwrap();
+
+        let req = TestRequest::with_uri("/Cargo.toml").to_srv_request();
+        let resp = test::call_service(&st, req).await;
+        assert_eq!(resp.status(), StatusCode::OK);
+
+        let req = TestRequest::with_uri("/src/lib.rs").to_srv_request();
+        let resp = test::call_service(&st, req).await;
+        assert_eq!(resp.status(), StatusCode::NOT_FOUND);
+    }
+
+    #[actix_rt::test]
+    async fn test_default_handler_filter() {
+        let st = Files::new("/", ".")
+            .default_handler(|req: ServiceRequest| async {
+                Ok(req.into_response(HttpResponse::Ok().body("default content")))
+            })
+            .path_filter(|path, _| path.extension() == Some("png".as_ref()))
+            .new_service(())
+            .await
+            .unwrap();
+        let req = TestRequest::with_uri("/Cargo.toml").to_srv_request();
+        let resp = test::call_service(&st, req).await;
+
+        assert_eq!(resp.status(), StatusCode::OK);
+        let bytes = test::read_body(resp).await;
+        assert_eq!(bytes, web::Bytes::from_static(b"default content"));
+    }
+}

actix-files/src/named.rs

@@ -0,0 +1,631 @@
+use std::{
+    fs::Metadata,
+    io,
+    path::{Path, PathBuf},
+    time::{SystemTime, UNIX_EPOCH},
+};
+
+use actix_web::{
+    body::{self, BoxBody, SizedStream},
+    dev::{
+        self, AppService, HttpServiceFactory, ResourceDef, Service, ServiceFactory,
+        ServiceRequest, ServiceResponse,
+    },
+    http::{
+        header::{
+            self, Charset, ContentDisposition, ContentEncoding, DispositionParam,
+            DispositionType, ExtendedValue, HeaderValue,
+        },
+        StatusCode,
+    },
+    Error, HttpMessage, HttpRequest, HttpResponse, Responder,
+};
+use bitflags::bitflags;
+use derive_more::{Deref, DerefMut};
+use futures_core::future::LocalBoxFuture;
+use mime_guess::from_path;
+
+use crate::{encoding::equiv_utf8_text, range::HttpRange};
+
+bitflags! {
+    pub(crate) struct Flags: u8 {
+        const ETAG =                0b0000_0001;
+        const LAST_MD =             0b0000_0010;
+        const CONTENT_DISPOSITION = 0b0000_0100;
+        const PREFER_UTF8 =         0b0000_1000;
+    }
+}
+
+impl Default for Flags {
+    fn default() -> Self {
+        Flags::from_bits_truncate(0b0000_1111)
+    }
+}
+
+/// A file with an associated name.
+///
+/// `NamedFile` can be registered as services:
+/// ```
+/// use actix_web::App;
+/// use actix_files::NamedFile;
+///
+/// # async fn run() -> Result<(), Box<dyn std::error::Error>> {
+/// let file = NamedFile::open_async("./static/index.html").await?;
+/// let app = App::new().service(file);
+/// # Ok(())
+/// # }
+/// ```
+///
+/// They can also be returned from handlers:
+/// ```
+/// use actix_web::{Responder, get};
+/// use actix_files::NamedFile;
+///
+/// #[get("/")]
+/// async fn index() -> impl Responder {
+///     NamedFile::open_async("./static/index.html").await
+/// }
+/// ```
+#[derive(Debug, Deref, DerefMut)]
+pub struct NamedFile {
+    #[deref]
+    #[deref_mut]
+    file: File,
+    path: PathBuf,
+    modified: Option<SystemTime>,
+    pub(crate) md: Metadata,
+    pub(crate) flags: Flags,
+    pub(crate) status_code: StatusCode,
+    pub(crate) content_type: mime::Mime,
+    pub(crate) content_disposition: header::ContentDisposition,
+    pub(crate) encoding: Option<ContentEncoding>,
+}
+
+#[cfg(not(feature = "experimental-io-uring"))]
+pub(crate) use std::fs::File;
+#[cfg(feature = "experimental-io-uring")]
+pub(crate) use tokio_uring::fs::File;
+
+use super::chunked;
+
+impl NamedFile {
+    /// Creates an instance from a previously opened file.
+    ///
+    /// The given `path` need not exist and is only used to determine the `ContentType` and
+    /// `ContentDisposition` headers.
+    ///
+    /// # Examples
+    /// ```ignore
+    /// use std::{
+    ///     io::{self, Write as _},
+    ///     env,
+    ///     fs::File
+    /// };
+    /// use actix_files::NamedFile;
+    ///
+    /// let mut file = File::create("foo.txt")?;
+    /// file.write_all(b"Hello, world!")?;
+    /// let named_file = NamedFile::from_file(file, "bar.txt")?;
+    /// # std::fs::remove_file("foo.txt");
+    /// Ok(())
+    /// ```
+    pub fn from_file<P: AsRef<Path>>(file: File, path: P) -> io::Result<NamedFile> {
+        let path = path.as_ref().to_path_buf();
+
+        // Get the name of the file and use it to construct default Content-Type
+        // and Content-Disposition values
+        let (content_type, content_disposition) = {
+            let filename = match path.file_name() {
+                Some(name) => name.to_string_lossy(),
+                None => {
+                    return Err(io::Error::new(
+                        io::ErrorKind::InvalidInput,
+                        "Provided path has no filename",
+                    ));
+                }
+            };
+
+            let ct = from_path(&path).first_or_octet_stream();
+
+            let disposition = match ct.type_() {
+                mime::IMAGE | mime::TEXT | mime::VIDEO => DispositionType::Inline,
+                mime::APPLICATION => match ct.subtype() {
+                    mime::JAVASCRIPT | mime::JSON => DispositionType::Inline,
+                    name if name == "wasm" => DispositionType::Inline,
+                    _ => DispositionType::Attachment,
+                },
+                _ => DispositionType::Attachment,
+            };
+
+            let mut parameters =
+                vec![DispositionParam::Filename(String::from(filename.as_ref()))];
+
+            if !filename.is_ascii() {
+                parameters.push(DispositionParam::FilenameExt(ExtendedValue {
+                    charset: Charset::Ext(String::from("UTF-8")),
+                    language_tag: None,
+                    value: filename.into_owned().into_bytes(),
+                }))
+            }
+
+            let cd = ContentDisposition {
+                disposition,
+                parameters,
+            };
+
+            (ct, cd)
+        };
+
+        let md = {
+            #[cfg(not(feature = "experimental-io-uring"))]
+            {
+                file.metadata()?
+            }
+
+            #[cfg(feature = "experimental-io-uring")]
+            {
+                use std::os::unix::prelude::{AsRawFd, FromRawFd};
+
+                let fd = file.as_raw_fd();
+
+                // SAFETY: fd is borrowed and lives longer than the unsafe block
+                unsafe {
+                    let file = std::fs::File::from_raw_fd(fd);
+                    let md = file.metadata();
+                    // SAFETY: forget the fd before exiting block in success or error case but don't
+                    // run destructor (that would close file handle)
+                    std::mem::forget(file);
+                    md?
+                }
+            }
+        };
+
+        let modified = md.modified().ok();
+        let encoding = None;
+
+        Ok(NamedFile {
+            path,
+            file,
+            content_type,
+            content_disposition,
+            md,
+            modified,
+            encoding,
+            status_code: StatusCode::OK,
+            flags: Flags::default(),
+        })
+    }
+
+    /// Attempts to open a file in read-only mode.
+    ///
+    /// # Examples
+    /// ```
+    /// use actix_files::NamedFile;
+    /// let file = NamedFile::open("foo.txt");
+    /// ```
+    #[cfg(not(feature = "experimental-io-uring"))]
+    pub fn open<P: AsRef<Path>>(path: P) -> io::Result<NamedFile> {
+        let file = File::open(&path)?;
+        Self::from_file(file, path)
+    }
+
+    #[allow(rustdoc::broken_intra_doc_links)]
+    /// Attempts to open a file asynchronously in read-only mode.
+    ///
+    /// When the `experimental-io-uring` crate feature is enabled, this will be async.
+    /// Otherwise, it will be just like [`open`][Self::open].
+    ///
+    /// # Examples
+    /// ```
+    /// use actix_files::NamedFile;
+    /// # async fn open() {
+    /// let file = NamedFile::open_async("foo.txt").await.unwrap();
+    /// # }
+    /// ```
+    pub async fn open_async<P: AsRef<Path>>(path: P) -> io::Result<NamedFile> {
+        let file = {
+            #[cfg(not(feature = "experimental-io-uring"))]
+            {
+                File::open(&path)?
+            }
+
+            #[cfg(feature = "experimental-io-uring")]
+            {
+                File::open(&path).await?
+            }
+        };
+
+        Self::from_file(file, path)
+    }
+
+    /// Returns reference to the underlying `File` object.
+    #[inline]
+    pub fn file(&self) -> &File {
+        &self.file
+    }
+
+    /// Retrieve the path of this file.
+    ///
+    /// # Examples
+    /// ```
+    /// # use std::io;
+    /// use actix_files::NamedFile;
+    ///
+    /// # async fn path() -> io::Result<()> {
+    /// let file = NamedFile::open_async("test.txt").await?;
+    /// assert_eq!(file.path().as_os_str(), "foo.txt");
+    /// # Ok(())
+    /// # }
+    /// ```
+    #[inline]
+    pub fn path(&self) -> &Path {
+        self.path.as_path()
+    }
+
+    /// Set response **Status Code**
+    pub fn set_status_code(mut self, status: StatusCode) -> Self {
+        self.status_code = status;
+        self
+    }
+
+    /// Set the MIME Content-Type for serving this file. By default the Content-Type is inferred
+    /// from the filename extension.
+    #[inline]
+    pub fn set_content_type(mut self, mime_type: mime::Mime) -> Self {
+        self.content_type = mime_type;
+        self
+    }
+
+    /// Set the Content-Disposition for serving this file. This allows changing the
+    /// `inline/attachment` disposition as well as the filename sent to the peer.
+    ///
+    /// By default the disposition is `inline` for `text/*`, `image/*`, `video/*` and
+    /// `application/{javascript, json, wasm}` mime types, and `attachment` otherwise, and the
+    /// filename is taken from the path provided in the `open` method after converting it to UTF-8
+    /// (using `to_string_lossy`).
+    #[inline]
+    pub fn set_content_disposition(mut self, cd: header::ContentDisposition) -> Self {
+        self.content_disposition = cd;
+        self.flags.insert(Flags::CONTENT_DISPOSITION);
+        self
+    }
+
+    /// Disable `Content-Disposition` header.
+    ///
+    /// By default Content-Disposition` header is enabled.
+    #[inline]
+    pub fn disable_content_disposition(mut self) -> Self {
+        self.flags.remove(Flags::CONTENT_DISPOSITION);
+        self
+    }
+
+    /// Sets content encoding for this file.
+    ///
+    /// This prevents the `Compress` middleware from modifying the file contents and signals to
+    /// browsers/clients how to decode it. For example, if serving a compressed HTML file (e.g.,
+    /// `index.html.gz`) then use `.set_content_encoding(ContentEncoding::Gzip)`.
+    #[inline]
+    pub fn set_content_encoding(mut self, enc: ContentEncoding) -> Self {
+        self.encoding = Some(enc);
+        self
+    }
+
+    /// Specifies whether to return `ETag` header in response.
+    ///
+    /// Default is true.
+    #[inline]
+    pub fn use_etag(mut self, value: bool) -> Self {
+        self.flags.set(Flags::ETAG, value);
+        self
+    }
+
+    /// Specifies whether to return `Last-Modified` header in response.
+    ///
+    /// Default is true.
+    #[inline]
+    pub fn use_last_modified(mut self, value: bool) -> Self {
+        self.flags.set(Flags::LAST_MD, value);
+        self
+    }
+
+    /// Specifies whether text responses should signal a UTF-8 encoding.
+    ///
+    /// Default is false (but will default to true in a future version).
+    #[inline]
+    pub fn prefer_utf8(mut self, value: bool) -> Self {
+        self.flags.set(Flags::PREFER_UTF8, value);
+        self
+    }
+
+    /// Creates an `ETag` in a format is similar to Apache's.
+    pub(crate) fn etag(&self) -> Option<header::EntityTag> {
+        self.modified.as_ref().map(|mtime| {
+            let ino = {
+                #[cfg(unix)]
+                {
+                    #[cfg(unix)]
+                    use std::os::unix::fs::MetadataExt as _;
+
+                    self.md.ino()
+                }
+
+                #[cfg(not(unix))]
+                {
+                    0
+                }
+            };
+
+            let dur = mtime
+                .duration_since(UNIX_EPOCH)
+                .expect("modification time must be after epoch");
+
+            header::EntityTag::new_strong(format!(
+                "{:x}:{:x}:{:x}:{:x}",
+                ino,
+                self.md.len(),
+                dur.as_secs(),
+                dur.subsec_nanos()
+            ))
+        })
+    }
+
+    pub(crate) fn last_modified(&self) -> Option<header::HttpDate> {
+        self.modified.map(|mtime| mtime.into())
+    }
+
+    /// Creates an `HttpResponse` with file as a streaming body.
+    pub fn into_response(self, req: &HttpRequest) -> HttpResponse<BoxBody> {
+        if self.status_code != StatusCode::OK {
+            let mut res = HttpResponse::build(self.status_code);
+
+            let ct = if self.flags.contains(Flags::PREFER_UTF8) {
+                equiv_utf8_text(self.content_type.clone())
+            } else {
+                self.content_type
+            };
+
+            res.insert_header((header::CONTENT_TYPE, ct.to_string()));
+
+            if self.flags.contains(Flags::CONTENT_DISPOSITION) {
+                res.insert_header((
+                    header::CONTENT_DISPOSITION,
+                    self.content_disposition.to_string(),
+                ));
+            }
+
+            if let Some(current_encoding) = self.encoding {
+                res.insert_header((header::CONTENT_ENCODING, current_encoding.as_str()));
+            }
+
+            let reader = chunked::new_chunked_read(self.md.len(), 0, self.file);
+
+            return res.streaming(reader);
+        }
+
+        let etag = if self.flags.contains(Flags::ETAG) {
+            self.etag()
+        } else {
+            None
+        };
+
+        let last_modified = if self.flags.contains(Flags::LAST_MD) {
+            self.last_modified()
+        } else {
+            None
+        };
+
+        // check preconditions
+        let precondition_failed = if !any_match(etag.as_ref(), req) {
+            true
+        } else if let (Some(ref m), Some(header::IfUnmodifiedSince(ref since))) =
+            (last_modified, req.get_header())
+        {
+            let t1: SystemTime = (*m).into();
+            let t2: SystemTime = (*since).into();
+
+            match (t1.duration_since(UNIX_EPOCH), t2.duration_since(UNIX_EPOCH)) {
+                (Ok(t1), Ok(t2)) => t1.as_secs() > t2.as_secs(),
+                _ => false,
+            }
+        } else {
+            false
+        };
+
+        // check last modified
+        let not_modified = if !none_match(etag.as_ref(), req) {
+            true
+        } else if req.headers().contains_key(header::IF_NONE_MATCH) {
+            false
+        } else if let (Some(ref m), Some(header::IfModifiedSince(ref since))) =
+            (last_modified, req.get_header())
+        {
+            let t1: SystemTime = (*m).into();
+            let t2: SystemTime = (*since).into();
+
+            match (t1.duration_since(UNIX_EPOCH), t2.duration_since(UNIX_EPOCH)) {
+                (Ok(t1), Ok(t2)) => t1.as_secs() <= t2.as_secs(),
+                _ => false,
+            }
+        } else {
+            false
+        };
+
+        let mut res = HttpResponse::build(self.status_code);
+
+        let ct = if self.flags.contains(Flags::PREFER_UTF8) {
+            equiv_utf8_text(self.content_type.clone())
+        } else {
+            self.content_type
+        };
+
+        res.insert_header((header::CONTENT_TYPE, ct.to_string()));
+
+        if self.flags.contains(Flags::CONTENT_DISPOSITION) {
+            res.insert_header((
+                header::CONTENT_DISPOSITION,
+                self.content_disposition.to_string(),
+            ));
+        }
+
+        if let Some(current_encoding) = self.encoding {
+            res.insert_header((header::CONTENT_ENCODING, current_encoding.as_str()));
+        }
+
+        if let Some(lm) = last_modified {
+            res.insert_header((header::LAST_MODIFIED, lm.to_string()));
+        }
+
+        if let Some(etag) = etag {
+            res.insert_header((header::ETAG, etag.to_string()));
+        }
+
+        res.insert_header((header::ACCEPT_RANGES, "bytes"));
+
+        let mut length = self.md.len();
+        let mut offset = 0;
+
+        // check for range header
+        if let Some(ranges) = req.headers().get(header::RANGE) {
+            if let Ok(ranges_header) = ranges.to_str() {
+                if let Ok(ranges) = HttpRange::parse(ranges_header, length) {
+                    length = ranges[0].length;
+                    offset = ranges[0].start;
+
+                    // don't allow compression middleware to modify partial content
+                    res.insert_header((
+                        header::CONTENT_ENCODING,
+                        HeaderValue::from_static("identity"),
+                    ));
+
+                    res.insert_header((
+                        header::CONTENT_RANGE,
+                        format!("bytes {}-{}/{}", offset, offset + length - 1, self.md.len()),
+                    ));
+                } else {
+                    res.insert_header((header::CONTENT_RANGE, format!("bytes */{}", length)));
+                    return res.status(StatusCode::RANGE_NOT_SATISFIABLE).finish();
+                };
+            } else {
+                return res.status(StatusCode::BAD_REQUEST).finish();
+            };
+        };
+
+        if precondition_failed {
+            return res.status(StatusCode::PRECONDITION_FAILED).finish();
+        } else if not_modified {
+            return res
+                .status(StatusCode::NOT_MODIFIED)
+                .body(body::None::new())
+                .map_into_boxed_body();
+        }
+
+        let reader = chunked::new_chunked_read(length, offset, self.file);
+
+        if offset != 0 || length != self.md.len() {
+            res.status(StatusCode::PARTIAL_CONTENT);
+        }
+
+        res.body(SizedStream::new(length, reader))
+    }
+}
+
+/// Returns true if `req` has no `If-Match` header or one which matches `etag`.
+fn any_match(etag: Option<&header::EntityTag>, req: &HttpRequest) -> bool {
+    match req.get_header::<header::IfMatch>() {
+        None | Some(header::IfMatch::Any) => true,
+
+        Some(header::IfMatch::Items(ref items)) => {
+            if let Some(some_etag) = etag {
+                for item in items {
+                    if item.strong_eq(some_etag) {
+                        return true;
+                    }
+                }
+            }
+
+            false
+        }
+    }
+}
+
+/// Returns true if `req` doesn't have an `If-None-Match` header matching `req`.
+fn none_match(etag: Option<&header::EntityTag>, req: &HttpRequest) -> bool {
+    match req.get_header::<header::IfNoneMatch>() {
+        Some(header::IfNoneMatch::Any) => false,
+
+        Some(header::IfNoneMatch::Items(ref items)) => {
+            if let Some(some_etag) = etag {
+                for item in items {
+                    if item.weak_eq(some_etag) {
+                        return false;
+                    }
+                }
+            }
+
+            true
+        }
+
+        None => true,
+    }
+}
+
+impl Responder for NamedFile {
+    type Body = BoxBody;
+
+    fn respond_to(self, req: &HttpRequest) -> HttpResponse<Self::Body> {
+        self.into_response(req)
+    }
+}
+
+impl ServiceFactory<ServiceRequest> for NamedFile {
+    type Response = ServiceResponse;
+    type Error = Error;
+    type Config = ();
+    type Service = NamedFileService;
+    type InitError = ();
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        let service = NamedFileService {
+            path: self.path.clone(),
+        };
+
+        Box::pin(async move { Ok(service) })
+    }
+}
+
+#[doc(hidden)]
+#[derive(Debug)]
+pub struct NamedFileService {
+    path: PathBuf,
+}
+
+impl Service<ServiceRequest> for NamedFileService {
+    type Response = ServiceResponse;
+    type Error = Error;
+    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+    dev::always_ready!();
+
+    fn call(&self, req: ServiceRequest) -> Self::Future {
+        let (req, _) = req.into_parts();
+
+        let path = self.path.clone();
+        Box::pin(async move {
+            let file = NamedFile::open_async(path).await?;
+            let res = file.into_response(&req);
+            Ok(ServiceResponse::new(req, res))
+        })
+    }
+}
+
+impl HttpServiceFactory for NamedFile {
+    fn register(self, config: &mut AppService) {
+        config.register_service(
+            ResourceDef::root_prefix(self.path.to_string_lossy().as_ref()),
+            None,
+            self,
+            None,
+        )
+    }
+}

actix-files/src/path_buf.rs

@@ -0,0 +1,190 @@
+use std::{
+    path::{Component, Path, PathBuf},
+    str::FromStr,
+};
+
+use actix_utils::future::{ready, Ready};
+use actix_web::{dev::Payload, FromRequest, HttpRequest};
+
+use crate::error::UriSegmentError;
+
+#[derive(Debug, PartialEq, Eq)]
+pub(crate) struct PathBufWrap(PathBuf);
+
+impl FromStr for PathBufWrap {
+    type Err = UriSegmentError;
+
+    fn from_str(path: &str) -> Result<Self, Self::Err> {
+        Self::parse_path(path, false)
+    }
+}
+
+impl PathBufWrap {
+    /// Parse a path, giving the choice of allowing hidden files to be considered valid segments.
+    ///
+    /// Path traversal is guarded by this method.
+    pub fn parse_path(path: &str, hidden_files: bool) -> Result<Self, UriSegmentError> {
+        let mut buf = PathBuf::new();
+
+        // equivalent to `path.split('/').count()`
+        let mut segment_count = path.matches('/').count() + 1;
+
+        // we can decode the whole path here (instead of per-segment decoding)
+        // because we will reject `%2F` in paths using `segement_count`.
+        let path = percent_encoding::percent_decode_str(path)
+            .decode_utf8()
+            .map_err(|_| UriSegmentError::NotValidUtf8)?;
+
+        // disallow decoding `%2F` into `/`
+        if segment_count != path.matches('/').count() + 1 {
+            return Err(UriSegmentError::BadChar('/'));
+        }
+
+        for segment in path.split('/') {
+            if segment == ".." {
+                segment_count -= 1;
+                buf.pop();
+            } else if !hidden_files && segment.starts_with('.') {
+                return Err(UriSegmentError::BadStart('.'));
+            } else if segment.starts_with('*') {
+                return Err(UriSegmentError::BadStart('*'));
+            } else if segment.ends_with(':') {
+                return Err(UriSegmentError::BadEnd(':'));
+            } else if segment.ends_with('>') {
+                return Err(UriSegmentError::BadEnd('>'));
+            } else if segment.ends_with('<') {
+                return Err(UriSegmentError::BadEnd('<'));
+            } else if segment.is_empty() {
+                segment_count -= 1;
+                continue;
+            } else if cfg!(windows) && segment.contains('\\') {
+                return Err(UriSegmentError::BadChar('\\'));
+            } else if cfg!(windows) && segment.contains(':') {
+                return Err(UriSegmentError::BadChar(':'));
+            } else {
+                buf.push(segment)
+            }
+        }
+
+        // make sure we agree with stdlib parser
+        for (i, component) in buf.components().enumerate() {
+            assert!(
+                matches!(component, Component::Normal(_)),
+                "component `{:?}` is not normal",
+                component
+            );
+            assert!(i < segment_count);
+        }
+
+        Ok(PathBufWrap(buf))
+    }
+}
+
+impl AsRef<Path> for PathBufWrap {
+    fn as_ref(&self) -> &Path {
+        self.0.as_ref()
+    }
+}
+
+impl FromRequest for PathBufWrap {
+    type Error = UriSegmentError;
+    type Future = Ready<Result<Self, Self::Error>>;
+
+    fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future {
+        ready(req.match_info().unprocessed().parse())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::iter::FromIterator;
+
+    use super::*;
+
+    #[test]
+    fn test_path_buf() {
+        assert_eq!(
+            PathBufWrap::from_str("/test/.tt").map(|t| t.0),
+            Err(UriSegmentError::BadStart('.'))
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/test/*tt").map(|t| t.0),
+            Err(UriSegmentError::BadStart('*'))
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/test/tt:").map(|t| t.0),
+            Err(UriSegmentError::BadEnd(':'))
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/test/tt<").map(|t| t.0),
+            Err(UriSegmentError::BadEnd('<'))
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/test/tt>").map(|t| t.0),
+            Err(UriSegmentError::BadEnd('>'))
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/seg1/seg2/").unwrap().0,
+            PathBuf::from_iter(vec!["seg1", "seg2"])
+        );
+        assert_eq!(
+            PathBufWrap::from_str("/seg1/../seg2/").unwrap().0,
+            PathBuf::from_iter(vec!["seg2"])
+        );
+    }
+
+    #[test]
+    fn test_parse_path() {
+        assert_eq!(
+            PathBufWrap::parse_path("/test/.tt", false).map(|t| t.0),
+            Err(UriSegmentError::BadStart('.'))
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path("/test/.tt", true).unwrap().0,
+            PathBuf::from_iter(vec!["test", ".tt"])
+        );
+    }
+
+    #[test]
+    fn path_traversal() {
+        assert_eq!(
+            PathBufWrap::parse_path("/../README.md", false).unwrap().0,
+            PathBuf::from_iter(vec!["README.md"])
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path("/../README.md", true).unwrap().0,
+            PathBuf::from_iter(vec!["README.md"])
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path("/../../../../../../../../../../etc/passwd", false)
+                .unwrap()
+                .0,
+            PathBuf::from_iter(vec!["etc/passwd"])
+        );
+    }
+
+    #[test]
+    #[cfg_attr(windows, should_panic)]
+    fn windows_drive_traversal() {
+        // detect issues in windows that could lead to path traversal
+        // see <https://github.com/SergioBenitez/Rocket/issues/1949
+
+        assert_eq!(
+            PathBufWrap::parse_path("C:test.txt", false).unwrap().0,
+            PathBuf::from_iter(vec!["C:test.txt"])
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path("C:../whatever", false).unwrap().0,
+            PathBuf::from_iter(vec!["C:../whatever"])
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path(":test.txt", false).unwrap().0,
+            PathBuf::from_iter(vec![":test.txt"])
+        );
+    }
+}

actix-files/src/range.rs

@@ -0,0 +1,310 @@
+use derive_more::{Display, Error};
+
+/// HTTP Range header representation.
+#[derive(Debug, Clone, Copy)]
+pub struct HttpRange {
+    /// Start of range.
+    pub start: u64,
+
+    /// Length of range.
+    pub length: u64,
+}
+
+#[derive(Debug, Clone, Display, Error)]
+#[display(fmt = "Parse HTTP Range failed")]
+pub struct ParseRangeErr(#[error(not(source))] ());
+
+impl HttpRange {
+    /// Parses Range HTTP header string as per RFC 2616.
+    ///
+    /// `header` is HTTP Range header (e.g. `bytes=bytes=0-9`).
+    /// `size` is full size of response (file).
+    pub fn parse(header: &str, size: u64) -> Result<Vec<HttpRange>, ParseRangeErr> {
+        match http_range::HttpRange::parse(header, size) {
+            Ok(ranges) => Ok(ranges
+                .iter()
+                .map(|range| HttpRange {
+                    start: range.start,
+                    length: range.length,
+                })
+                .collect()),
+            Err(_) => Err(ParseRangeErr(())),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    struct T(&'static str, u64, Vec<HttpRange>);
+
+    #[test]
+    fn test_parse() {
+        let tests = vec![
+            T("", 0, vec![]),
+            T("", 1000, vec![]),
+            T("foo", 0, vec![]),
+            T("bytes=", 0, vec![]),
+            T("bytes=7", 10, vec![]),
+            T("bytes= 7 ", 10, vec![]),
+            T("bytes=1-", 0, vec![]),
+            T("bytes=5-4", 10, vec![]),
+            T("bytes=0-2,5-4", 10, vec![]),
+            T("bytes=2-5,4-3", 10, vec![]),
+            T("bytes=--5,4--3", 10, vec![]),
+            T("bytes=A-", 10, vec![]),
+            T("bytes=A- ", 10, vec![]),
+            T("bytes=A-Z", 10, vec![]),
+            T("bytes= -Z", 10, vec![]),
+            T("bytes=5-Z", 10, vec![]),
+            T("bytes=Ran-dom, garbage", 10, vec![]),
+            T("bytes=0x01-0x02", 10, vec![]),
+            T("bytes=         ", 10, vec![]),
+            T("bytes= , , ,   ", 10, vec![]),
+            T(
+                "bytes=0-9",
+                10,
+                vec![HttpRange {
+                    start: 0,
+                    length: 10,
+                }],
+            ),
+            T(
+                "bytes=0-",
+                10,
+                vec![HttpRange {
+                    start: 0,
+                    length: 10,
+                }],
+            ),
+            T(
+                "bytes=5-",
+                10,
+                vec![HttpRange {
+                    start: 5,
+                    length: 5,
+                }],
+            ),
+            T(
+                "bytes=0-20",
+                10,
+                vec![HttpRange {
+                    start: 0,
+                    length: 10,
+                }],
+            ),
+            T(
+                "bytes=15-,0-5",
+                10,
+                vec![HttpRange {
+                    start: 0,
+                    length: 6,
+                }],
+            ),
+            T(
+                "bytes=1-2,5-",
+                10,
+                vec![
+                    HttpRange {
+                        start: 1,
+                        length: 2,
+                    },
+                    HttpRange {
+                        start: 5,
+                        length: 5,
+                    },
+                ],
+            ),
+            T(
+                "bytes=-2 , 7-",
+                11,
+                vec![
+                    HttpRange {
+                        start: 9,
+                        length: 2,
+                    },
+                    HttpRange {
+                        start: 7,
+                        length: 4,
+                    },
+                ],
+            ),
+            T(
+                "bytes=0-0 ,2-2, 7-",
+                11,
+                vec![
+                    HttpRange {
+                        start: 0,
+                        length: 1,
+                    },
+                    HttpRange {
+                        start: 2,
+                        length: 1,
+                    },
+                    HttpRange {
+                        start: 7,
+                        length: 4,
+                    },
+                ],
+            ),
+            T(
+                "bytes=-5",
+                10,
+                vec![HttpRange {
+                    start: 5,
+                    length: 5,
+                }],
+            ),
+            T(
+                "bytes=-15",
+                10,
+                vec![HttpRange {
+                    start: 0,
+                    length: 10,
+                }],
+            ),
+            T(
+                "bytes=0-499",
+                10000,
+                vec![HttpRange {
+                    start: 0,
+                    length: 500,
+                }],
+            ),
+            T(
+                "bytes=500-999",
+                10000,
+                vec![HttpRange {
+                    start: 500,
+                    length: 500,
+                }],
+            ),
+            T(
+                "bytes=-500",
+                10000,
+                vec![HttpRange {
+                    start: 9500,
+                    length: 500,
+                }],
+            ),
+            T(
+                "bytes=9500-",
+                10000,
+                vec![HttpRange {
+                    start: 9500,
+                    length: 500,
+                }],
+            ),
+            T(
+                "bytes=0-0,-1",
+                10000,
+                vec![
+                    HttpRange {
+                        start: 0,
+                        length: 1,
+                    },
+                    HttpRange {
+                        start: 9999,
+                        length: 1,
+                    },
+                ],
+            ),
+            T(
+                "bytes=500-600,601-999",
+                10000,
+                vec![
+                    HttpRange {
+                        start: 500,
+                        length: 101,
+                    },
+                    HttpRange {
+                        start: 601,
+                        length: 399,
+                    },
+                ],
+            ),
+            T(
+                "bytes=500-700,601-999",
+                10000,
+                vec![
+                    HttpRange {
+                        start: 500,
+                        length: 201,
+                    },
+                    HttpRange {
+                        start: 601,
+                        length: 399,
+                    },
+                ],
+            ),
+            // Match Apache laxity:
+            T(
+                "bytes=   1 -2   ,  4- 5, 7 - 8 , ,,",
+                11,
+                vec![
+                    HttpRange {
+                        start: 1,
+                        length: 2,
+                    },
+                    HttpRange {
+                        start: 4,
+                        length: 2,
+                    },
+                    HttpRange {
+                        start: 7,
+                        length: 2,
+                    },
+                ],
+            ),
+        ];
+
+        for t in tests {
+            let header = t.0;
+            let size = t.1;
+            let expected = t.2;
+
+            let res = HttpRange::parse(header, size);
+
+            if res.is_err() {
+                if expected.is_empty() {
+                    continue;
+                } else {
+                    panic!(
+                        "parse({}, {}) returned error {:?}",
+                        header,
+                        size,
+                        res.unwrap_err()
+                    );
+                }
+            }
+
+            let got = res.unwrap();
+
+            if got.len() != expected.len() {
+                panic!(
+                    "len(parseRange({}, {})) = {}, want {}",
+                    header,
+                    size,
+                    got.len(),
+                    expected.len()
+                );
+            }
+
+            for i in 0..expected.len() {
+                if got[i].start != expected[i].start {
+                    panic!(
+                        "parseRange({}, {})[{}].start = {}, want {}",
+                        header, size, i, got[i].start, expected[i].start
+                    )
+                }
+                if got[i].length != expected[i].length {
+                    panic!(
+                        "parseRange({}, {})[{}].length = {}, want {}",
+                        header, size, i, got[i].length, expected[i].length
+                    )
+                }
+            }
+        }
+    }
+}

actix-files/src/service.rs

@@ -0,0 +1,195 @@
+use std::{fmt, io, ops::Deref, path::PathBuf, rc::Rc};
+
+use actix_web::{
+    body::BoxBody,
+    dev::{self, Service, ServiceRequest, ServiceResponse},
+    error::Error,
+    guard::Guard,
+    http::{header, Method},
+    HttpResponse,
+};
+use futures_core::future::LocalBoxFuture;
+
+use crate::{
+    named, Directory, DirectoryRenderer, FilesError, HttpService, MimeOverride, NamedFile,
+    PathBufWrap, PathFilter,
+};
+
+/// Assembled file serving service.
+#[derive(Clone)]
+pub struct FilesService(pub(crate) Rc<FilesServiceInner>);
+
+impl Deref for FilesService {
+    type Target = FilesServiceInner;
+
+    fn deref(&self) -> &Self::Target {
+        &*self.0
+    }
+}
+
+pub struct FilesServiceInner {
+    pub(crate) directory: PathBuf,
+    pub(crate) index: Option<String>,
+    pub(crate) show_index: bool,
+    pub(crate) redirect_to_slash: bool,
+    pub(crate) default: Option<HttpService>,
+    pub(crate) renderer: Rc<DirectoryRenderer>,
+    pub(crate) mime_override: Option<Rc<MimeOverride>>,
+    pub(crate) path_filter: Option<Rc<PathFilter>>,
+    pub(crate) file_flags: named::Flags,
+    pub(crate) guards: Option<Rc<dyn Guard>>,
+    pub(crate) hidden_files: bool,
+}
+
+impl fmt::Debug for FilesServiceInner {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("FilesServiceInner")
+    }
+}
+
+impl FilesService {
+    async fn handle_err(
+        &self,
+        err: io::Error,
+        req: ServiceRequest,
+    ) -> Result<ServiceResponse, Error> {
+        log::debug!("error handling {}: {}", req.path(), err);
+
+        if let Some(ref default) = self.default {
+            default.call(req).await
+        } else {
+            Ok(req.error_response(err))
+        }
+    }
+
+    fn serve_named_file(
+        &self,
+        req: ServiceRequest,
+        mut named_file: NamedFile,
+    ) -> ServiceResponse {
+        if let Some(ref mime_override) = self.mime_override {
+            let new_disposition = mime_override(&named_file.content_type.type_());
+            named_file.content_disposition.disposition = new_disposition;
+        }
+        named_file.flags = self.file_flags;
+
+        let (req, _) = req.into_parts();
+        let res = named_file.into_response(&req);
+        ServiceResponse::new(req, res)
+    }
+
+    fn show_index(&self, req: ServiceRequest, path: PathBuf) -> ServiceResponse {
+        let dir = Directory::new(self.directory.clone(), path);
+
+        let (req, _) = req.into_parts();
+
+        (self.renderer)(&dir, &req).unwrap_or_else(|e| ServiceResponse::from_err(e, req))
+    }
+}
+
+impl fmt::Debug for FilesService {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("FilesService")
+    }
+}
+
+impl Service<ServiceRequest> for FilesService {
+    type Response = ServiceResponse<BoxBody>;
+    type Error = Error;
+    type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
+
+    dev::always_ready!();
+
+    fn call(&self, req: ServiceRequest) -> Self::Future {
+        let is_method_valid = if let Some(guard) = &self.guards {
+            // execute user defined guards
+            (**guard).check(&req.guard_ctx())
+        } else {
+            // default behavior
+            matches!(*req.method(), Method::HEAD | Method::GET)
+        };
+
+        let this = self.clone();
+
+        Box::pin(async move {
+            if !is_method_valid {
+                return Ok(req.into_response(
+                    HttpResponse::MethodNotAllowed()
+                        .insert_header(header::ContentType(mime::TEXT_PLAIN_UTF_8))
+                        .body("Request did not meet this resource's requirements."),
+                ));
+            }
+
+            let path_on_disk = match PathBufWrap::parse_path(
+                req.match_info().unprocessed(),
+                this.hidden_files,
+            ) {
+                Ok(item) => item,
+                Err(err) => return Ok(req.error_response(err)),
+            };
+
+            if let Some(filter) = &this.path_filter {
+                if !filter(path_on_disk.as_ref(), req.head()) {
+                    if let Some(ref default) = this.default {
+                        return default.call(req).await;
+                    } else {
+                        return Ok(req.into_response(HttpResponse::NotFound().finish()));
+                    }
+                }
+            }
+
+            // full file path
+            let path = this.directory.join(&path_on_disk);
+            if let Err(err) = path.canonicalize() {
+                return this.handle_err(err, req).await;
+            }
+
+            if path.is_dir() {
+                if this.redirect_to_slash
+                    && !req.path().ends_with('/')
+                    && (this.index.is_some() || this.show_index)
+                {
+                    let redirect_to = format!("{}/", req.path());
+
+                    return Ok(req.into_response(
+                        HttpResponse::Found()
+                            .insert_header((header::LOCATION, redirect_to))
+                            .finish(),
+                    ));
+                }
+
+                match this.index {
+                    Some(ref index) => {
+                        let named_path = path.join(index);
+                        match NamedFile::open_async(named_path).await {
+                            Ok(named_file) => Ok(this.serve_named_file(req, named_file)),
+                            Err(_) if this.show_index => Ok(this.show_index(req, path)),
+                            Err(err) => this.handle_err(err, req).await,
+                        }
+                    }
+                    None if this.show_index => Ok(this.show_index(req, path)),
+                    None => Ok(ServiceResponse::from_err(
+                        FilesError::IsDirectory,
+                        req.into_parts().0,
+                    )),
+                }
+            } else {
+                match NamedFile::open_async(&path).await {
+                    Ok(mut named_file) => {
+                        if let Some(ref mime_override) = this.mime_override {
+                            let new_disposition =
+                                mime_override(&named_file.content_type.type_());
+                            named_file.content_disposition.disposition = new_disposition;
+                        }
+                        named_file.flags = this.file_flags;
+
+                        let (req, _) = req.into_parts();
+                        let res = named_file.into_response(&req);
+                        Ok(ServiceResponse::new(req, res))
+                    }
+                    Err(err) => this.handle_err(err, req).await,
+                }
+            }
+        })
+    }
+}

actix-files/tests/encoding.rs

@@ -0,0 +1,38 @@
+use actix_files::Files;
+use actix_web::{
+    http::{
+        header::{self, HeaderValue},
+        StatusCode,
+    },
+    test::{self, TestRequest},
+    App,
+};
+
+#[actix_web::test]
+async fn test_utf8_file_contents() {
+    // use default ISO-8859-1 encoding
+    let srv = test::init_service(App::new().service(Files::new("/", "./tests"))).await;
+
+    let req = TestRequest::with_uri("/utf8.txt").to_request();
+    let res = test::call_service(&srv, req).await;
+
+    assert_eq!(res.status(), StatusCode::OK);
+    assert_eq!(
+        res.headers().get(header::CONTENT_TYPE),
+        Some(&HeaderValue::from_static("text/plain; charset=utf-8")),
+    );
+
+    // disable UTF-8 attribute
+    let srv =
+        test::init_service(App::new().service(Files::new("/", "./tests").prefer_utf8(false)))
+            .await;
+
+    let req = TestRequest::with_uri("/utf8.txt").to_request();
+    let res = test::call_service(&srv, req).await;
+
+    assert_eq!(res.status(), StatusCode::OK);
+    assert_eq!(
+        res.headers().get(header::CONTENT_TYPE),
+        Some(&HeaderValue::from_static("text/plain")),
+    );
+}

actix-files/tests/fixtures/guards/first/index.txt

@@ -0,0 +1 @@
+first

actix-files/tests/fixtures/guards/second/index.txt

@@ -0,0 +1 @@
+second

actix-files/tests/guard.rs

@@ -0,0 +1,36 @@
+use actix_files::Files;
+use actix_web::{
+    guard::Host,
+    http::StatusCode,
+    test::{self, TestRequest},
+    App,
+};
+use bytes::Bytes;
+
+#[actix_web::test]
+async fn test_guard_filter() {
+    let srv = test::init_service(
+        App::new()
+            .service(Files::new("/", "./tests/fixtures/guards/first").guard(Host("first.com")))
+            .service(
+                Files::new("/", "./tests/fixtures/guards/second").guard(Host("second.com")),
+            ),
+    )
+    .await;
+
+    let req = TestRequest::with_uri("/index.txt")
+        .append_header(("Host", "first.com"))
+        .to_request();
+    let res = test::call_service(&srv, req).await;
+
+    assert_eq!(res.status(), StatusCode::OK);
+    assert_eq!(test::read_body(res).await, Bytes::from("first"));
+
+    let req = TestRequest::with_uri("/index.txt")
+        .append_header(("Host", "second.com"))
+        .to_request();
+    let res = test::call_service(&srv, req).await;
+
+    assert_eq!(res.status(), StatusCode::OK);
+    assert_eq!(test::read_body(res).await, Bytes::from("second"));
+}

actix-files/tests/symlink-test.png

@@ -0,0 +1 @@
+test.png

actix-files/tests/test.binary

@@ -0,0 +1 @@
+<EFBFBD>TǑɂV<EFBFBD>2<EFBFBD>vI<EFBFBD><EFBFBD><EFBFBD>\<5C>R˙<52><CB99><EFBFBD>e<EFBFBD><04>vD<76>:藽<>RV<03>Yp<59><70>;<3B><>G<><47>p!2<7F>C<EFBFBD>.<2E><0C><><EFBFBD><EFBFBD>pA!<21>ߦ<EFBFBD>x	j+Uc<55><63><EFBFBD>X<13>c%<17>;<3B>"y<10><>AI

actix-files/tests/test.js

@@ -0,0 +1 @@
+// this file is empty.

actix-files/tests/traversal.rs

@@ -0,0 +1,27 @@
+use actix_files::Files;
+use actix_web::{
+    http::StatusCode,
+    test::{self, TestRequest},
+    App,
+};
+
+#[actix_rt::test]
+async fn test_directory_traversal_prevention() {
+    let srv = test::init_service(App::new().service(Files::new("/", "./tests"))).await;
+
+    let req =
+        TestRequest::with_uri("/../../../../../../../../../../../etc/passwd").to_request();
+    let res = test::call_service(&srv, req).await;
+    assert_eq!(res.status(), StatusCode::NOT_FOUND);
+
+    let req = TestRequest::with_uri(
+        "/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd",
+    )
+    .to_request();
+    let res = test::call_service(&srv, req).await;
+    assert_eq!(res.status(), StatusCode::NOT_FOUND);
+
+    let req = TestRequest::with_uri("/%00/etc/passwd%00").to_request();
+    let res = test::call_service(&srv, req).await;
+    assert_eq!(res.status(), StatusCode::NOT_FOUND);
+}

actix-files/tests/utf8.txt

@@ -0,0 +1,3 @@
+中文内容显示正确。
+
+English is OK.

actix-http-test/CHANGES.md

@@ -0,0 +1,146 @@
+# Changes
+
+## Unreleased - 2021-xx-xx
+
+
+## 3.0.0-beta.13 - 2022-02-16
+- No significant changes since `3.0.0-beta.12`.
+
+
+## 3.0.0-beta.12 - 2022-01-31
+- No significant changes since `3.0.0-beta.11`.
+
+
+## 3.0.0-beta.11 - 2022-01-04
+- Minimum supported Rust version (MSRV) is now 1.54.
+
+
+## 3.0.0-beta.10 - 2021-12-27
+- Update `actix-server` to `2.0.0-rc.2`. [#2550]
+
+[#2550]: https://github.com/actix/actix-web/pull/2550
+
+
+## 3.0.0-beta.9 - 2021-12-11
+- No significant changes since `3.0.0-beta.8`.
+
+
+## 3.0.0-beta.8 - 2021-11-30
+- Update `actix-tls` to `3.0.0-rc.1`. [#2474]
+
+[#2474]: https://github.com/actix/actix-web/pull/2474
+
+
+## 3.0.0-beta.7 - 2021-11-22
+- Fix compatibility with experimental `io-uring` feature of `actix-rt`. [#2408]
+
+[#2408]: https://github.com/actix/actix-web/pull/2408
+
+
+## 3.0.0-beta.6 - 2021-11-15
+- `TestServer::stop` is now async and will wait for the server and system to shutdown. [#2442]
+- Update `actix-server` to `2.0.0-beta.9`. [#2442]
+- Minimum supported Rust version (MSRV) is now 1.52.
+
+[#2442]: https://github.com/actix/actix-web/pull/2442
+
+
+## 3.0.0-beta.5 - 2021-09-09
+- Minimum supported Rust version (MSRV) is now 1.51.
+
+
+## 3.0.0-beta.4 - 2021-04-02
+- Added `TestServer::client_headers` method. [#2097]
+
+[#2097]: https://github.com/actix/actix-web/pull/2097
+
+
+## 3.0.0-beta.3 - 2021-03-09
+- No notable changes.
+
+
+## 3.0.0-beta.2 - 2021-02-10
+- No notable changes.
+
+
+## 3.0.0-beta.1 - 2021-01-07
+- Update `bytes` to `1.0`. [#1813]
+
+[#1813]: https://github.com/actix/actix-web/pull/1813
+
+
+## 2.1.0 - 2020-11-25
+- Add ability to set address for `TestServer`. [#1645]
+- Upgrade `base64` to `0.13`.
+- Upgrade `serde_urlencoded` to `0.7`. [#1773]
+
+[#1773]: https://github.com/actix/actix-web/pull/1773
+[#1645]: https://github.com/actix/actix-web/pull/1645
+
+
+## 2.0.0 - 2020-09-11
+- Update actix-codec and actix-utils dependencies.
+
+
+## 2.0.0-alpha.1 - 2020-05-23
+- Update the `time` dependency to 0.2.7
+- Update `actix-connect` dependency to 2.0.0-alpha.2
+- Make `test_server` `async` fn.
+- Bump minimum supported Rust version to 1.40
+- Replace deprecated `net2` crate with `socket2`
+- Update `base64` dependency to 0.12
+- Update `env_logger` dependency to 0.7
+
+## 1.0.0 - 2019-12-13
+- Replaced `TestServer::start()` with `test_server()`
+
+
+## 1.0.0-alpha.3 - 2019-12-07
+- Migrate to `std::future`
+
+
+## 0.2.5 - 2019-09-17
+- Update serde_urlencoded to "0.6.1"
+- Increase TestServerRuntime timeouts from 500ms to 3000ms
+- Do not override current `System`
+
+
+## 0.2.4 - 2019-07-18
+- Update actix-server to 0.6
+
+
+## 0.2.3 - 2019-07-16
+- Add `delete`, `options`, `patch` methods to `TestServerRunner`
+
+
+## 0.2.2 - 2019-06-16
+- Add .put() and .sput() methods
+
+
+## 0.2.1 - 2019-06-05
+- Add license files
+
+
+## 0.2.0 - 2019-05-12
+- Update awc and actix-http deps
+
+
+## 0.1.1 - 2019-04-24
+- Always make new connection for http client
+
+
+## 0.1.0 - 2019-04-16
+- No changes
+
+
+## 0.1.0-alpha.3 - 2019-04-02
+- Request functions accept path #743
+
+
+## 0.1.0-alpha.2 - 2019-03-29
+- Added TestServerRuntime::load_body() method
+- Update actix-http and awc libraries
+
+
+## 0.1.0-alpha.1 - 2019-03-28
+- Initial impl

actix-http-test/Cargo.toml

@@ -0,0 +1,55 @@
+[package]
+name = "actix-http-test"
+version = "3.0.0-beta.13"
+authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
+description = "Various helpers for Actix applications to use during testing"
+keywords = ["http", "web", "framework", "async", "futures"]
+homepage = "https://actix.rs"
+repository = "https://github.com/actix/actix-web.git"
+categories = [
+    "network-programming",
+    "asynchronous",
+    "web-programming::http-server",
+    "web-programming::websocket",
+]
+license = "MIT OR Apache-2.0"
+edition = "2018"
+
+[package.metadata.docs.rs]
+features = []
+
+[lib]
+name = "actix_http_test"
+path = "src/lib.rs"
+
+[features]
+default = []
+
+# openssl
+openssl = ["tls-openssl", "awc/openssl"]
+
+[dependencies]
+actix-service = "2.0.0"
+actix-codec = "0.5"
+actix-tls = "3"
+actix-utils = "3.0.0"
+actix-rt = "2.2"
+actix-server = "2"
+awc = { version = "3.0.0-beta.21", default-features = false }
+
+base64 = "0.13"
+bytes = "1"
+futures-core = { version = "0.3.7", default-features = false }
+http = "0.2.5"
+log = "0.4"
+socket2 = "0.4"
+serde = "1.0"
+serde_json = "1.0"
+slab = "0.4"
+serde_urlencoded = "0.7"
+tls-openssl = { version = "0.10.9", package = "openssl", optional = true }
+tokio = { version = "1.8.4", features = ["sync"] }
+
+[dev-dependencies]
+actix-web = { version = "4.0.0", default-features = false, features = ["cookies"] }
+actix-http = "3.0.0"

actix-http-test/LICENSE-APACHE

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

actix-http-test/LICENSE-MIT

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

actix-http-test/README.md

@@ -0,0 +1,17 @@
+# actix-http-test
+
+> Various helpers for Actix applications to use during testing.
+
+[![crates.io](https://img.shields.io/crates/v/actix-http-test?label=latest)](https://crates.io/crates/actix-http-test)
+[![Documentation](https://docs.rs/actix-http-test/badge.svg?version=3.0.0-beta.13)](https://docs.rs/actix-http-test/3.0.0-beta.13)
+[![Version](https://img.shields.io/badge/rustc-1.54+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.54.0.html)
+![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-http-test)
+<br>
+[![Dependency Status](https://deps.rs/crate/actix-http-test/3.0.0-beta.13/status.svg)](https://deps.rs/crate/actix-http-test/3.0.0-beta.13)
+[![Download](https://img.shields.io/crates/d/actix-http-test.svg)](https://crates.io/crates/actix-http-test)
+[![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+
+## Documentation & Resources
+
+- [API Documentation](https://docs.rs/actix-http-test)
+- Minimum Supported Rust Version (MSRV): 1.54

actix-http-test/src/lib.rs

@@ -0,0 +1,312 @@
+//! Various helpers for Actix applications to use during testing.
+
+#![deny(rust_2018_idioms, nonstandard_style)]
+#![warn(future_incompatible)]
+#![doc(html_logo_url = "https://actix.rs/img/logo.png")]
+#![doc(html_favicon_url = "https://actix.rs/favicon.ico")]
+
+#[cfg(feature = "openssl")]
+extern crate tls_openssl as openssl;
+
+use std::{net, thread, time::Duration};
+
+use actix_codec::{AsyncRead, AsyncWrite, Framed};
+use actix_rt::{net::TcpStream, System};
+use actix_server::{Server, ServerServiceFactory};
+use awc::{
+    error::PayloadError, http::header::HeaderMap, ws, Client, ClientRequest, ClientResponse,
+    Connector,
+};
+use bytes::Bytes;
+use futures_core::stream::Stream;
+use http::Method;
+use socket2::{Domain, Protocol, Socket, Type};
+use tokio::sync::mpsc;
+
+/// Start test server.
+///
+/// `TestServer` is very simple test server that simplify process of writing integration tests cases
+/// for HTTP applications.
+///
+/// # Examples
+/// ```no_run
+/// use actix_http::HttpService;
+/// use actix_http_test::test_server;
+/// use actix_web::{web, App, HttpResponse, Error};
+///
+/// async fn my_handler() -> Result<HttpResponse, Error> {
+///     Ok(HttpResponse::Ok().into())
+/// }
+///
+/// #[actix_web::test]
+/// async fn test_example() {
+///     let mut srv = TestServer::start(||
+///         HttpService::new(
+///             App::new().service(web::resource("/").to(my_handler))
+///         )
+///     );
+///
+///     let req = srv.get("/");
+///     let response = req.send().await.unwrap();
+///     assert!(response.status().is_success());
+/// }
+/// ```
+pub async fn test_server<F: ServerServiceFactory<TcpStream>>(factory: F) -> TestServer {
+    let tcp = net::TcpListener::bind("127.0.0.1:0").unwrap();
+    test_server_with_addr(tcp, factory).await
+}
+
+/// Start [`test server`](test_server()) on an existing address binding.
+pub async fn test_server_with_addr<F: ServerServiceFactory<TcpStream>>(
+    tcp: net::TcpListener,
+    factory: F,
+) -> TestServer {
+    let (started_tx, started_rx) = std::sync::mpsc::channel();
+    let (thread_stop_tx, thread_stop_rx) = mpsc::channel(1);
+
+    // run server in separate thread
+    thread::spawn(move || {
+        System::new().block_on(async move {
+            let local_addr = tcp.local_addr().unwrap();
+
+            let srv = Server::build()
+                .workers(1)
+                .disable_signals()
+                .system_exit()
+                .listen("test", tcp, factory)
+                .expect("test server could not be created");
+
+            let srv = srv.run();
+            started_tx
+                .send((System::current(), srv.handle(), local_addr))
+                .unwrap();
+
+            // drive server loop
+            srv.await.unwrap();
+        });
+
+        // notify TestServer that server and system have shut down
+        // all thread managed resources should be dropped at this point
+        let _ = thread_stop_tx.send(());
+    });
+
+    let (system, server, addr) = started_rx.recv().unwrap();
+
+    let client = {
+        #[cfg(feature = "openssl")]
+        let connector = {
+            use openssl::ssl::{SslConnector, SslMethod, SslVerifyMode};
+
+            let mut builder = SslConnector::builder(SslMethod::tls()).unwrap();
+
+            builder.set_verify(SslVerifyMode::NONE);
+            let _ = builder
+                .set_alpn_protos(b"\x02h2\x08http/1.1")
+                .map_err(|e| log::error!("Can not set alpn protocol: {:?}", e));
+
+            Connector::new()
+                .conn_lifetime(Duration::from_secs(0))
+                .timeout(Duration::from_millis(30000))
+                .openssl(builder.build())
+        };
+
+        #[cfg(not(feature = "openssl"))]
+        let connector = {
+            Connector::new()
+                .conn_lifetime(Duration::from_secs(0))
+                .timeout(Duration::from_millis(30000))
+        };
+
+        Client::builder().connector(connector).finish()
+    };
+
+    TestServer {
+        server,
+        client,
+        system,
+        addr,
+        thread_stop_rx,
+    }
+}
+
+/// Test server controller
+pub struct TestServer {
+    server: actix_server::ServerHandle,
+    client: awc::Client,
+    system: actix_rt::System,
+    addr: net::SocketAddr,
+    thread_stop_rx: mpsc::Receiver<()>,
+}
+
+impl TestServer {
+    /// Construct test server url
+    pub fn addr(&self) -> net::SocketAddr {
+        self.addr
+    }
+
+    /// Construct test server url
+    pub fn url(&self, uri: &str) -> String {
+        if uri.starts_with('/') {
+            format!("http://localhost:{}{}", self.addr.port(), uri)
+        } else {
+            format!("http://localhost:{}/{}", self.addr.port(), uri)
+        }
+    }
+
+    /// Construct test HTTPS server URL.
+    pub fn surl(&self, uri: &str) -> String {
+        if uri.starts_with('/') {
+            format!("https://localhost:{}{}", self.addr.port(), uri)
+        } else {
+            format!("https://localhost:{}/{}", self.addr.port(), uri)
+        }
+    }
+
+    /// Create `GET` request
+    pub fn get<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.get(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `GET` request
+    pub fn sget<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.get(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `POST` request
+    pub fn post<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.post(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `POST` request
+    pub fn spost<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.post(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `HEAD` request
+    pub fn head<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.head(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `HEAD` request
+    pub fn shead<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.head(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `PUT` request
+    pub fn put<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.put(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `PUT` request
+    pub fn sput<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.put(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `PATCH` request
+    pub fn patch<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.patch(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `PATCH` request
+    pub fn spatch<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.patch(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `DELETE` request
+    pub fn delete<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.delete(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `DELETE` request
+    pub fn sdelete<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.delete(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Create `OPTIONS` request
+    pub fn options<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.options(self.url(path.as_ref()).as_str())
+    }
+
+    /// Create HTTPS `OPTIONS` request
+    pub fn soptions<S: AsRef<str>>(&self, path: S) -> ClientRequest {
+        self.client.options(self.surl(path.as_ref()).as_str())
+    }
+
+    /// Connect to test HTTP server
+    pub fn request<S: AsRef<str>>(&self, method: Method, path: S) -> ClientRequest {
+        self.client.request(method, path.as_ref())
+    }
+
+    pub async fn load_body<S>(
+        &mut self,
+        mut response: ClientResponse<S>,
+    ) -> Result<Bytes, PayloadError>
+    where
+        S: Stream<Item = Result<Bytes, PayloadError>> + Unpin + 'static,
+    {
+        response.body().limit(10_485_760).await
+    }
+
+    /// Connect to WebSocket server at a given path.
+    pub async fn ws_at(
+        &mut self,
+        path: &str,
+    ) -> Result<Framed<impl AsyncRead + AsyncWrite, ws::Codec>, awc::error::WsClientError> {
+        let url = self.url(path);
+        let connect = self.client.ws(url).connect();
+        connect.await.map(|(_, framed)| framed)
+    }
+
+    /// Connect to a WebSocket server.
+    pub async fn ws(
+        &mut self,
+    ) -> Result<Framed<impl AsyncRead + AsyncWrite, ws::Codec>, awc::error::WsClientError> {
+        self.ws_at("/").await
+    }
+
+    /// Get default HeaderMap of Client.
+    ///
+    /// Returns Some(&mut HeaderMap) when Client object is unique
+    /// (No other clone of client exists at the same time).
+    pub fn client_headers(&mut self) -> Option<&mut HeaderMap> {
+        self.client.headers()
+    }
+
+    /// Stop HTTP server.
+    ///
+    /// Waits for spawned `Server` and `System` to (force) shutdown.
+    pub async fn stop(&mut self) {
+        // signal server to stop
+        self.server.stop(false).await;
+
+        // also signal system to stop
+        // though this is handled by `ServerBuilder::exit_system` too
+        self.system.stop();
+
+        // wait for thread to be stopped but don't care about result
+        let _ = self.thread_stop_rx.recv().await;
+    }
+}
+
+impl Drop for TestServer {
+    fn drop(&mut self) {
+        // calls in this Drop impl should be enough to shut down the server, system, and thread
+        // without needing to await anything
+
+        // signal server to stop
+        let _ = self.server.stop(true);
+
+        // signal system to stop
+        self.system.stop();
+    }
+}
+
+/// Get a localhost socket address with random, unused port.
+pub fn unused_addr() -> net::SocketAddr {
+    let addr: net::SocketAddr = "127.0.0.1:0".parse().unwrap();
+    let socket = Socket::new(Domain::IPV4, Type::STREAM, Some(Protocol::TCP)).unwrap();
+    socket.bind(&addr.into()).unwrap();
+    socket.set_reuse_address(true).unwrap();
+    let tcp = net::TcpListener::from(socket);
+    tcp.local_addr().unwrap()
+}

actix-http/Cargo.toml

@@ -0,0 +1,139 @@
+[package]
+name = "actix-http"
+version = "3.0.0"
+authors = [
+    "Nikolay Kim <fafhrd91@gmail.com>",
+    "Rob Ede <robjtede@icloud.com>",
+]
+description = "HTTP primitives for the Actix ecosystem"
+keywords = ["actix", "http", "framework", "async", "futures"]
+homepage = "https://actix.rs"
+repository = "https://github.com/actix/actix-web.git"
+categories = [
+    "network-programming",
+    "asynchronous",
+    "web-programming::http-server",
+    "web-programming::websocket",
+]
+license = "MIT OR Apache-2.0"
+edition = "2018"
+
+[package.metadata.docs.rs]
+# features that docs.rs will build with
+features = ["http2", "openssl", "rustls", "compress-brotli", "compress-gzip", "compress-zstd"]
+
+[lib]
+name = "actix_http"
+path = "src/lib.rs"
+
+[features]
+default = []
+
+# HTTP/2 protocol support
+http2 = ["h2"]
+
+# WebSocket protocol implementation
+ws = [
+    "local-channel",
+    "base64",
+    "rand",
+    "sha-1",
+]
+
+# TLS via OpenSSL
+openssl = ["actix-tls/accept", "actix-tls/openssl"]
+
+# TLS via Rustls
+rustls = ["actix-tls/accept", "actix-tls/rustls"]
+
+# Compression codecs
+compress-brotli = ["__compress", "brotli"]
+compress-gzip   = ["__compress", "flate2"]
+compress-zstd   = ["__compress", "zstd"]
+
+# Internal (PRIVATE!) features used to aid testing and cheking feature status.
+# Don't rely on these whatsoever. They are semver-exempt and may disappear at anytime.
+__compress = []
+
+[dependencies]
+actix-service = "2"
+actix-codec = "0.5"
+actix-utils = "3"
+actix-rt = { version = "2.2", default-features = false }
+
+ahash = "0.7"
+bitflags = "1.2"
+bytes = "1"
+bytestring = "1"
+derive_more = "0.99.5"
+encoding_rs = "0.8"
+futures-core = { version = "0.3.7", default-features = false, features = ["alloc"] }
+http = "0.2.5"
+httparse = "1.5.1"
+httpdate = "1.0.1"
+itoa = "1"
+language-tags = "0.3"
+log = "0.4"
+mime = "0.3"
+percent-encoding = "2.1"
+pin-project-lite = "0.2"
+smallvec = "1.6.1"
+
+# http2
+h2 = { version = "0.3.9", optional = true }
+
+# websockets
+local-channel = { version = "0.1", optional = true }
+base64 = { version = "0.13", optional = true }
+rand = { version = "0.8", optional = true }
+sha-1 = { version = "0.10", optional = true }
+
+# openssl/rustls
+actix-tls = { version = "3", default-features = false, optional = true }
+
+# compress-*
+brotli = { version = "3.3.3", optional = true }
+flate2 = { version = "1.0.13", optional = true }
+zstd = { version = "0.10", optional = true }
+
+[dev-dependencies]
+actix-http-test = { version = "3.0.0-beta.13", features = ["openssl"] }
+actix-server = "2"
+actix-tls = { version = "3", features = ["openssl"] }
+actix-web = "4.0.0"
+
+async-stream = "0.3"
+criterion = { version = "0.3", features = ["html_reports"] }
+env_logger = "0.9"
+futures-util = { version = "0.3.7", default-features = false, features = ["alloc"] }
+memchr = "2.4"
+once_cell = "1.9"
+rcgen = "0.8"
+regex = "1.3"
+rustls-pemfile = "0.2"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+static_assertions = "1"
+tls-openssl = { package = "openssl", version = "0.10.9" }
+tls-rustls = { package = "rustls", version = "0.20.0" }
+tokio = { version = "1.8.4", features = ["net", "rt", "macros"] }
+
+[[example]]
+name = "ws"
+required-features = ["rustls"]
+
+[[bench]]
+name = "write-camel-case"
+harness = false
+
+[[bench]]
+name = "status-line"
+harness = false
+
+[[bench]]
+name = "uninit-headers"
+harness = false
+
+[[bench]]
+name = "quality-value"
+harness = false

actix-http/LICENSE-APACHE

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

actix-http/LICENSE-MIT

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

actix-http/README.md

@@ -0,0 +1,66 @@
+# actix-http
+
+> HTTP primitives for the Actix ecosystem.
+
+[![crates.io](https://img.shields.io/crates/v/actix-http?label=latest)](https://crates.io/crates/actix-http)
+[![Documentation](https://docs.rs/actix-http/badge.svg?version=3.0.0)](https://docs.rs/actix-http/3.0.0)
+[![Version](https://img.shields.io/badge/rustc-1.54+-ab6000.svg)](https://blog.rust-lang.org/2021/05/06/Rust-1.54.0.html)
+![MIT or Apache 2.0 licensed](https://img.shields.io/crates/l/actix-http.svg)
+<br />
+[![dependency status](https://deps.rs/crate/actix-http/3.0.0/status.svg)](https://deps.rs/crate/actix-http/3.0.0)
+[![Download](https://img.shields.io/crates/d/actix-http.svg)](https://crates.io/crates/actix-http)
+[![Chat on Discord](https://img.shields.io/discord/771444961383153695?label=chat&logo=discord)](https://discord.gg/NWpN5mmg3x)
+
+## Documentation & Resources
+
+- [API Documentation](https://docs.rs/actix-http)
+- Minimum Supported Rust Version (MSRV): 1.54
+
+## Example
+
+```rust
+use std::{env, io};
+
+use actix_http::{HttpService, Response};
+use actix_server::Server;
+use futures_util::future;
+use http::header::HeaderValue;
+use log::info;
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env::set_var("RUST_LOG", "hello_world=info");
+    env_logger::init();
+
+    Server::build()
+        .bind("hello-world", "127.0.0.1:8080", || {
+            HttpService::build()
+                .client_timeout(1000)
+                .client_disconnect(1000)
+                .finish(|_req| {
+                    info!("{:?}", _req);
+                    let mut res = Response::Ok();
+                    res.header("x-head", HeaderValue::from_static("dummy value!"));
+                    future::ok::<_, ()>(res.body("Hello world!"))
+                })
+                .tcp()
+        })?
+        .run()
+        .await
+}
+```
+
+## 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))
+
+at your option.
+
+## Code of Conduct
+
+Contribution to the actix-http crate is organized under the terms of the
+Contributor Covenant, the maintainer of actix-http, @fafhrd91, promises to
+intervene to uphold that code of conduct.

actix-http/benches/quality-value.rs

@@ -0,0 +1,95 @@
+use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
+
+const CODES: &[u16] = &[0, 1000, 201, 800, 550];
+
+fn bench_quality_display_impls(c: &mut Criterion) {
+    let mut group = c.benchmark_group("quality value display impls");
+
+    for i in CODES.iter() {
+        group.bench_with_input(BenchmarkId::new("New (fast?)", i), i, |b, &i| {
+            b.iter(|| _new::Quality(i).to_string())
+        });
+
+        group.bench_with_input(BenchmarkId::new("Naive", i), i, |b, &i| {
+            b.iter(|| _naive::Quality(i).to_string())
+        });
+    }
+
+    group.finish();
+}
+
+criterion_group!(benches, bench_quality_display_impls);
+criterion_main!(benches);
+
+mod _new {
+    use std::fmt;
+
+    pub struct Quality(pub(crate) u16);
+
+    impl fmt::Display for Quality {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match self.0 {
+                0 => f.write_str("0"),
+                1000 => f.write_str("1"),
+
+                // some number in the range 1–999
+                x => {
+                    f.write_str("0.")?;
+
+                    // this implementation avoids string allocation otherwise required
+                    // for `.trim_end_matches('0')`
+
+                    if x < 10 {
+                        f.write_str("00")?;
+                        // 0 is handled so it's not possible to have a trailing 0, we can just return
+                        itoa_fmt(f, x)
+                    } else if x < 100 {
+                        f.write_str("0")?;
+                        if x % 10 == 0 {
+                            // trailing 0, divide by 10 and write
+                            itoa_fmt(f, x / 10)
+                        } else {
+                            itoa_fmt(f, x)
+                        }
+                    } else {
+                        // x is in range 101–999
+
+                        if x % 100 == 0 {
+                            // two trailing 0s, divide by 100 and write
+                            itoa_fmt(f, x / 100)
+                        } else if x % 10 == 0 {
+                            // one trailing 0, divide by 10 and write
+                            itoa_fmt(f, x / 10)
+                        } else {
+                            itoa_fmt(f, x)
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    pub fn itoa_fmt<W: fmt::Write, V: itoa::Integer>(mut wr: W, value: V) -> fmt::Result {
+        let mut buf = itoa::Buffer::new();
+        wr.write_str(buf.format(value))
+    }
+}
+
+mod _naive {
+    use std::fmt;
+
+    pub struct Quality(pub(crate) u16);
+
+    impl fmt::Display for Quality {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            match self.0 {
+                0 => f.write_str("0"),
+                1000 => f.write_str("1"),
+
+                x => {
+                    write!(f, "{}", format!("{:03}", x).trim_end_matches('0'))
+                }
+            }
+        }
+    }
+}

actix-http/benches/status-line.rs

@@ -0,0 +1,214 @@
+use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
+
+use bytes::BytesMut;
+use http::Version;
+
+const CODES: &[u16] = &[201, 303, 404, 515];
+
+fn bench_write_status_line_11(c: &mut Criterion) {
+    let mut group = c.benchmark_group("write_status_line v1.1");
+
+    let version = Version::HTTP_11;
+
+    for i in CODES.iter() {
+        group.bench_with_input(BenchmarkId::new("Original (unsafe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _original::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("New (safe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _new::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("Naive", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _naive::write_status_line(version, i, &mut b);
+            })
+        });
+    }
+
+    group.finish();
+}
+
+fn bench_write_status_line_10(c: &mut Criterion) {
+    let mut group = c.benchmark_group("write_status_line v1.0");
+
+    let version = Version::HTTP_10;
+
+    for i in CODES.iter() {
+        group.bench_with_input(BenchmarkId::new("Original (unsafe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _original::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("New (safe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _new::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("Naive", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _naive::write_status_line(version, i, &mut b);
+            })
+        });
+    }
+
+    group.finish();
+}
+
+fn bench_write_status_line_09(c: &mut Criterion) {
+    let mut group = c.benchmark_group("write_status_line v0.9");
+
+    let version = Version::HTTP_09;
+
+    for i in CODES.iter() {
+        group.bench_with_input(BenchmarkId::new("Original (unsafe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _original::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("New (safe)", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _new::write_status_line(version, i, &mut b);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("Naive", i), i, |b, &i| {
+            b.iter(|| {
+                let mut b = BytesMut::with_capacity(35);
+                _naive::write_status_line(version, i, &mut b);
+            })
+        });
+    }
+
+    group.finish();
+}
+
+criterion_group!(
+    benches,
+    bench_write_status_line_11,
+    bench_write_status_line_10,
+    bench_write_status_line_09
+);
+criterion_main!(benches);
+
+mod _naive {
+    use bytes::{BufMut, BytesMut};
+    use http::Version;
+
+    pub(crate) fn write_status_line(version: Version, n: u16, bytes: &mut BytesMut) {
+        match version {
+            Version::HTTP_11 => bytes.put_slice(b"HTTP/1.1 "),
+            Version::HTTP_10 => bytes.put_slice(b"HTTP/1.0 "),
+            Version::HTTP_09 => bytes.put_slice(b"HTTP/0.9 "),
+            _ => {
+                // other HTTP version handlers do not use this method
+            }
+        }
+
+        bytes.put_slice(n.to_string().as_bytes());
+    }
+}
+
+mod _new {
+    use bytes::{BufMut, BytesMut};
+    use http::Version;
+
+    const DIGITS_START: u8 = b'0';
+
+    pub(crate) fn write_status_line(version: Version, n: u16, bytes: &mut BytesMut) {
+        match version {
+            Version::HTTP_11 => bytes.put_slice(b"HTTP/1.1 "),
+            Version::HTTP_10 => bytes.put_slice(b"HTTP/1.0 "),
+            Version::HTTP_09 => bytes.put_slice(b"HTTP/0.9 "),
+            _ => {
+                // other HTTP version handlers do not use this method
+            }
+        }
+
+        let d100 = (n / 100) as u8;
+        let d10 = ((n / 10) % 10) as u8;
+        let d1 = (n % 10) as u8;
+
+        bytes.put_u8(DIGITS_START + d100);
+        bytes.put_u8(DIGITS_START + d10);
+        bytes.put_u8(DIGITS_START + d1);
+
+        bytes.put_u8(b' ');
+    }
+}
+
+mod _original {
+    use std::ptr;
+
+    use bytes::{BufMut, BytesMut};
+    use http::Version;
+
+    const DEC_DIGITS_LUT: &[u8] = b"0001020304050607080910111213141516171819\
+        2021222324252627282930313233343536373839\
+        4041424344454647484950515253545556575859\
+        6061626364656667686970717273747576777879\
+        8081828384858687888990919293949596979899";
+
+    pub(crate) const STATUS_LINE_BUF_SIZE: usize = 13;
+
+    pub(crate) fn write_status_line(version: Version, mut n: u16, bytes: &mut BytesMut) {
+        let mut buf: [u8; STATUS_LINE_BUF_SIZE] = *b"HTTP/1.1     ";
+
+        match version {
+            Version::HTTP_2 => buf[5] = b'2',
+            Version::HTTP_10 => buf[7] = b'0',
+            Version::HTTP_09 => {
+                buf[5] = b'0';
+                buf[7] = b'9';
+            }
+            _ => {}
+        }
+
+        let mut curr: isize = 12;
+        let buf_ptr = buf.as_mut_ptr();
+        let lut_ptr = DEC_DIGITS_LUT.as_ptr();
+        let four = n > 999;
+
+        // decode 2 more chars, if > 2 chars
+        let d1 = (n % 100) << 1;
+        n /= 100;
+        curr -= 2;
+        unsafe {
+            ptr::copy_nonoverlapping(lut_ptr.offset(d1 as isize), buf_ptr.offset(curr), 2);
+        }
+
+        // decode last 1 or 2 chars
+        if n < 10 {
+            curr -= 1;
+            unsafe {
+                *buf_ptr.offset(curr) = (n as u8) + b'0';
+            }
+        } else {
+            let d1 = n << 1;
+            curr -= 2;
+            unsafe {
+                ptr::copy_nonoverlapping(lut_ptr.offset(d1 as isize), buf_ptr.offset(curr), 2);
+            }
+        }
+
+        bytes.put_slice(&buf);
+        if four {
+            bytes.put_u8(b' ');
+        }
+    }
+}

actix-http/benches/uninit-headers.rs

@@ -0,0 +1,134 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+
+use bytes::BytesMut;
+
+// A Miri run detects UB, seen on this playground:
+// https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=f5d9aa166aa48df8dca05fce2b6c3915
+
+fn bench_header_parsing(c: &mut Criterion) {
+    c.bench_function("Original (Unsound) [short]", |b| {
+        b.iter(|| {
+            let mut buf = BytesMut::from(REQ_SHORT);
+            _original::parse_headers(&mut buf);
+        })
+    });
+
+    c.bench_function("New (safe) [short]", |b| {
+        b.iter(|| {
+            let mut buf = BytesMut::from(REQ_SHORT);
+            _new::parse_headers(&mut buf);
+        })
+    });
+
+    c.bench_function("Original (Unsound) [realistic]", |b| {
+        b.iter(|| {
+            let mut buf = BytesMut::from(REQ);
+            _original::parse_headers(&mut buf);
+        })
+    });
+
+    c.bench_function("New (safe) [realistic]", |b| {
+        b.iter(|| {
+            let mut buf = BytesMut::from(REQ);
+            _new::parse_headers(&mut buf);
+        })
+    });
+}
+
+criterion_group!(benches, bench_header_parsing);
+criterion_main!(benches);
+
+const MAX_HEADERS: usize = 96;
+
+const EMPTY_HEADER_ARRAY: [httparse::Header<'static>; MAX_HEADERS] =
+    [httparse::EMPTY_HEADER; MAX_HEADERS];
+
+#[derive(Clone, Copy)]
+struct HeaderIndex {
+    name: (usize, usize),
+    value: (usize, usize),
+}
+
+const EMPTY_HEADER_INDEX: HeaderIndex = HeaderIndex {
+    name: (0, 0),
+    value: (0, 0),
+};
+
+const EMPTY_HEADER_INDEX_ARRAY: [HeaderIndex; MAX_HEADERS] = [EMPTY_HEADER_INDEX; MAX_HEADERS];
+
+impl HeaderIndex {
+    fn record(bytes: &[u8], headers: &[httparse::Header<'_>], indices: &mut [HeaderIndex]) {
+        let bytes_ptr = bytes.as_ptr() as usize;
+        for (header, indices) in headers.iter().zip(indices.iter_mut()) {
+            let name_start = header.name.as_ptr() as usize - bytes_ptr;
+            let name_end = name_start + header.name.len();
+            indices.name = (name_start, name_end);
+            let value_start = header.value.as_ptr() as usize - bytes_ptr;
+            let value_end = value_start + header.value.len();
+            indices.value = (value_start, value_end);
+        }
+    }
+}
+
+// test cases taken from:
+// https://github.com/seanmonstar/httparse/blob/master/benches/parse.rs
+
+const REQ_SHORT: &[u8] = b"\
+GET / HTTP/1.0\r\n\
+Host: example.com\r\n\
+Cookie: session=60; user_id=1\r\n\r\n";
+
+const REQ: &[u8] = b"\
+GET /wp-content/uploads/2010/03/hello-kitty-darth-vader-pink.jpg HTTP/1.1\r\n\
+Host: www.kittyhell.com\r\n\
+User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; ja-JP-mac; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Pathtraq/0.9\r\n\
+Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n\
+Accept-Language: ja,en-us;q=0.7,en;q=0.3\r\n\
+Accept-Encoding: gzip,deflate\r\n\
+Accept-Charset: Shift_JIS,utf-8;q=0.7,*;q=0.7\r\n\
+Keep-Alive: 115\r\n\
+Connection: keep-alive\r\n\
+Cookie: wp_ozh_wsa_visits=2; wp_ozh_wsa_visit_lasttime=xxxxxxxxxx; __utma=xxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.xxxxxxxxxx.x; __utmz=xxxxxxxxx.xxxxxxxxxx.x.x.utmccn=(referral)|utmcsr=reader.livedoor.com|utmcct=/reader/|utmcmd=referral|padding=under256\r\n\r\n";
+
+mod _new {
+    use super::*;
+
+    pub fn parse_headers(src: &mut BytesMut) -> usize {
+        let mut headers: [HeaderIndex; MAX_HEADERS] = EMPTY_HEADER_INDEX_ARRAY;
+        let mut parsed: [httparse::Header<'_>; MAX_HEADERS] = EMPTY_HEADER_ARRAY;
+
+        let mut req = httparse::Request::new(&mut parsed);
+        match req.parse(src).unwrap() {
+            httparse::Status::Complete(_len) => {
+                HeaderIndex::record(src, req.headers, &mut headers);
+                req.headers.len()
+            }
+            _ => unreachable!(),
+        }
+    }
+}
+
+mod _original {
+    use super::*;
+
+    use std::mem::MaybeUninit;
+
+    pub fn parse_headers(src: &mut BytesMut) -> usize {
+        #![allow(clippy::uninit_assumed_init)]
+
+        let mut headers: [HeaderIndex; MAX_HEADERS] =
+            unsafe { MaybeUninit::uninit().assume_init() };
+
+        let mut parsed: [httparse::Header<'_>; MAX_HEADERS] =
+            unsafe { MaybeUninit::uninit().assume_init() };
+
+        let mut req = httparse::Request::new(&mut parsed);
+        match req.parse(src).unwrap() {
+            httparse::Status::Complete(_len) => {
+                HeaderIndex::record(src, req.headers, &mut headers);
+                req.headers.len()
+            }
+            _ => unreachable!(),
+        }
+    }
+}

actix-http/benches/write-camel-case.rs

@@ -0,0 +1,93 @@
+use criterion::{black_box, criterion_group, criterion_main, BenchmarkId, Criterion};
+
+fn bench_write_camel_case(c: &mut Criterion) {
+    let mut group = c.benchmark_group("write_camel_case");
+
+    let names = ["connection", "Transfer-Encoding", "transfer-encoding"];
+
+    for &i in &names {
+        let bts = i.as_bytes();
+
+        group.bench_with_input(BenchmarkId::new("Original", i), bts, |b, bts| {
+            b.iter(|| {
+                let mut buf = black_box([0; 24]);
+                _original::write_camel_case(black_box(bts), &mut buf)
+            });
+        });
+
+        group.bench_with_input(BenchmarkId::new("New", i), bts, |b, bts| {
+            b.iter(|| {
+                let mut buf = black_box([0; 24]);
+                let len = black_box(bts.len());
+                _new::write_camel_case(black_box(bts), buf.as_mut_ptr(), len)
+            });
+        });
+    }
+
+    group.finish();
+}
+
+criterion_group!(benches, bench_write_camel_case);
+criterion_main!(benches);
+
+mod _new {
+    pub fn write_camel_case(value: &[u8], buf: *mut u8, len: usize) {
+        // first copy entire (potentially wrong) slice to output
+        let buffer = unsafe {
+            std::ptr::copy_nonoverlapping(value.as_ptr(), buf, len);
+            std::slice::from_raw_parts_mut(buf, len)
+        };
+
+        let mut iter = value.iter();
+
+        // first character should be uppercase
+        if let Some(c @ b'a'..=b'z') = iter.next() {
+            buffer[0] = c & 0b1101_1111;
+        }
+
+        // track 1 ahead of the current position since that's the location being assigned to
+        let mut index = 2;
+
+        // remaining characters after hyphens should also be uppercase
+        while let Some(&c) = iter.next() {
+            if c == b'-' {
+                // advance iter by one and uppercase if needed
+                if let Some(c @ b'a'..=b'z') = iter.next() {
+                    buffer[index] = c & 0b1101_1111;
+                }
+            }
+
+            index += 1;
+        }
+    }
+}
+
+mod _original {
+    pub fn write_camel_case(value: &[u8], buffer: &mut [u8]) {
+        let mut index = 0;
+        let key = value;
+        let mut key_iter = key.iter();
+
+        if let Some(c) = key_iter.next() {
+            if *c >= b'a' && *c <= b'z' {
+                buffer[index] = *c ^ b' ';
+                index += 1;
+            }
+        } else {
+            return;
+        }
+
+        while let Some(c) = key_iter.next() {
+            buffer[index] = *c;
+            index += 1;
+            if *c == b'-' {
+                if let Some(c) = key_iter.next() {
+                    if *c >= b'a' && *c <= b'z' {
+                        buffer[index] = *c ^ b' ';
+                        index += 1;
+                    }
+                }
+            }
+        }
+    }
+}

actix-http/examples/actix-web.rs

@@ -0,0 +1,26 @@
+use actix_http::HttpService;
+use actix_server::Server;
+use actix_service::map_config;
+use actix_web::{dev::AppConfig, get, App};
+
+#[get("/")]
+async fn index() -> &'static str {
+    "Hello, world. From Actix Web!"
+}
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() -> std::io::Result<()> {
+    Server::build()
+        .bind("hello-world", "127.0.0.1:8080", || {
+            // construct actix-web app
+            let app = App::new().service(index);
+
+            HttpService::build()
+                // pass the app to service builder
+                // map_config is used to map App's configuration to ServiceBuilder
+                .finish(map_config(app, |_| AppConfig::default()))
+                .tcp()
+        })?
+        .run()
+        .await
+}

actix-http/examples/bench.rs

@@ -0,0 +1,27 @@
+use std::{convert::Infallible, io, time::Duration};
+
+use actix_http::{HttpService, Request, Response, StatusCode};
+use actix_server::Server;
+use once_cell::sync::Lazy;
+
+static STR: Lazy<String> = Lazy::new(|| "HELLO WORLD ".repeat(20));
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("dispatcher-benchmark", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                .client_request_timeout(Duration::from_secs(1))
+                .finish(|_: Request| async move {
+                    let mut res = Response::build(StatusCode::OK);
+                    Ok::<_, Infallible>(res.body(&**STR))
+                })
+                .tcp()
+        })?
+        // limiting number of workers so that bench client is not sharing as many resources
+        .workers(4)
+        .run()
+        .await
+}

actix-http/examples/echo.rs

@@ -0,0 +1,38 @@
+use std::{io, time::Duration};
+
+use actix_http::{Error, HttpService, Request, Response, StatusCode};
+use actix_server::Server;
+use bytes::BytesMut;
+use futures_util::StreamExt as _;
+use http::header::HeaderValue;
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("echo", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                .client_request_timeout(Duration::from_secs(1))
+                .client_disconnect_timeout(Duration::from_secs(1))
+                // handles HTTP/1.1 and HTTP/2
+                .finish(|mut req: Request| async move {
+                    let mut body = BytesMut::new();
+                    while let Some(item) = req.payload().next().await {
+                        body.extend_from_slice(&item?);
+                    }
+
+                    log::info!("request body: {:?}", body);
+
+                    let res = Response::build(StatusCode::OK)
+                        .insert_header(("x-head", HeaderValue::from_static("dummy value!")))
+                        .body(body);
+
+                    Ok::<_, Error>(res)
+                })
+                // No TLS
+                .tcp()
+        })?
+        .run()
+        .await
+}

actix-http/examples/echo2.rs

@@ -0,0 +1,35 @@
+use std::io;
+
+use actix_http::{
+    body::{BodyStream, MessageBody},
+    header, Error, HttpMessage, HttpService, Request, Response, StatusCode,
+};
+
+async fn handle_request(mut req: Request) -> Result<Response<impl MessageBody>, Error> {
+    let mut res = Response::build(StatusCode::OK);
+
+    if let Some(ct) = req.headers().get(header::CONTENT_TYPE) {
+        res.insert_header((header::CONTENT_TYPE, ct));
+    }
+
+    // echo request payload stream as (chunked) response body
+    let res = res.message_body(BodyStream::new(req.payload().take()))?;
+
+    Ok(res)
+}
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    actix_server::Server::build()
+        .bind("echo", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                // handles HTTP/1.1 only
+                .h1(handle_request)
+                // No TLS
+                .tcp()
+        })?
+        .run()
+        .await
+}

actix-http/examples/h2spec.rs

@@ -0,0 +1,25 @@
+use std::{convert::Infallible, io};
+
+use actix_http::{HttpService, Request, Response, StatusCode};
+use actix_server::Server;
+use once_cell::sync::Lazy;
+
+static STR: Lazy<String> = Lazy::new(|| "HELLO WORLD ".repeat(100));
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("h2spec", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                .h2(|_: Request| async move {
+                    let mut res = Response::build(StatusCode::OK);
+                    Ok::<_, Infallible>(res.body(&**STR))
+                })
+                .tcp()
+        })?
+        .workers(4)
+        .run()
+        .await
+}

actix-http/examples/hello-world.rs

@@ -0,0 +1,38 @@
+use std::{convert::Infallible, io, time::Duration};
+
+use actix_http::{
+    header::HeaderValue, HttpMessage, HttpService, Request, Response, StatusCode,
+};
+use actix_server::Server;
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("hello-world", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                .client_request_timeout(Duration::from_secs(1))
+                .client_disconnect_timeout(Duration::from_secs(1))
+                .on_connect_ext(|_, ext| {
+                    ext.insert(42u32);
+                })
+                .finish(|req: Request| async move {
+                    log::info!("{:?}", req);
+
+                    let mut res = Response::build(StatusCode::OK);
+                    res.insert_header(("x-head", HeaderValue::from_static("dummy value!")));
+
+                    let forty_two = req.extensions().get::<u32>().unwrap().to_string();
+                    res.insert_header((
+                        "x-forty-two",
+                        HeaderValue::from_str(&forty_two).unwrap(),
+                    ));
+
+                    Ok::<_, Infallible>(res.body("Hello world!"))
+                })
+                .tcp()
+        })?
+        .run()
+        .await
+}

actix-http/examples/streaming-error.rs

@@ -0,0 +1,40 @@
+//! Example showing response body (chunked) stream erroring.
+//!
+//! Test using `nc` or `curl`.
+//! ```sh
+//! $ curl -vN 127.0.0.1:8080
+//! $ echo 'GET / HTTP/1.1\n\n' | nc 127.0.0.1 8080
+//! ```
+
+use std::{convert::Infallible, io, time::Duration};
+
+use actix_http::{body::BodyStream, HttpService, Response};
+use actix_server::Server;
+use async_stream::stream;
+use bytes::Bytes;
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("streaming-error", ("127.0.0.1", 8080), || {
+            HttpService::build()
+                .finish(|req| async move {
+                    log::info!("{:?}", req);
+                    let res = Response::ok();
+
+                    Ok::<_, Infallible>(res.set_body(BodyStream::new(stream! {
+                        yield Ok(Bytes::from("123"));
+                        yield Ok(Bytes::from("456"));
+
+                        actix_rt::time::sleep(Duration::from_millis(1000)).await;
+
+                        yield Err(io::Error::new(io::ErrorKind::Other, ""));
+                    })))
+                })
+                .tcp()
+        })?
+        .run()
+        .await
+}

actix-http/examples/ws.rs

@@ -0,0 +1,112 @@
+//! Sets up a WebSocket server over TCP and TLS.
+//! Sends a heartbeat message every 4 seconds but does not respond to any incoming frames.
+
+extern crate tls_rustls as rustls;
+
+use std::{
+    io,
+    pin::Pin,
+    task::{Context, Poll},
+    time::Duration,
+};
+
+use actix_codec::Encoder;
+use actix_http::{body::BodyStream, error::Error, ws, HttpService, Request, Response};
+use actix_rt::time::{interval, Interval};
+use actix_server::Server;
+use bytes::{Bytes, BytesMut};
+use bytestring::ByteString;
+use futures_core::{ready, Stream};
+
+#[actix_rt::main]
+async fn main() -> io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    Server::build()
+        .bind("tcp", ("127.0.0.1", 8080), || {
+            HttpService::build().h1(handler).tcp()
+        })?
+        .bind("tls", ("127.0.0.1", 8443), || {
+            HttpService::build().finish(handler).rustls(tls_config())
+        })?
+        .run()
+        .await
+}
+
+async fn handler(req: Request) -> Result<Response<BodyStream<Heartbeat>>, Error> {
+    log::info!("handshaking");
+    let mut res = ws::handshake(req.head())?;
+
+    // handshake will always fail under HTTP/2
+
+    log::info!("responding");
+    Ok(res.message_body(BodyStream::new(Heartbeat::new(ws::Codec::new())))?)
+}
+
+struct Heartbeat {
+    codec: ws::Codec,
+    interval: Interval,
+}
+
+impl Heartbeat {
+    fn new(codec: ws::Codec) -> Self {
+        Self {
+            codec,
+            interval: interval(Duration::from_secs(4)),
+        }
+    }
+}
+
+impl Stream for Heartbeat {
+    type Item = Result<Bytes, Error>;
+
+    fn poll_next(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        log::trace!("poll");
+
+        ready!(self.as_mut().interval.poll_tick(cx));
+
+        let mut buffer = BytesMut::new();
+
+        self.as_mut()
+            .codec
+            .encode(
+                ws::Message::Text(ByteString::from_static("hello world")),
+                &mut buffer,
+            )
+            .unwrap();
+
+        Poll::Ready(Some(Ok(buffer.freeze())))
+    }
+}
+
+fn tls_config() -> rustls::ServerConfig {
+    use std::io::BufReader;
+
+    use rustls::{Certificate, PrivateKey};
+    use rustls_pemfile::{certs, pkcs8_private_keys};
+
+    let cert = rcgen::generate_simple_self_signed(vec!["localhost".to_owned()]).unwrap();
+    let cert_file = cert.serialize_pem().unwrap();
+    let key_file = cert.serialize_private_key_pem();
+
+    let cert_file = &mut BufReader::new(cert_file.as_bytes());
+    let key_file = &mut BufReader::new(key_file.as_bytes());
+
+    let cert_chain = certs(cert_file)
+        .unwrap()
+        .into_iter()
+        .map(Certificate)
+        .collect();
+    let mut keys = pkcs8_private_keys(key_file).unwrap();
+
+    let mut config = rustls::ServerConfig::builder()
+        .with_safe_defaults()
+        .with_no_client_auth()
+        .with_single_cert(cert_chain, PrivateKey(keys.remove(0)))
+        .unwrap();
+
+    config.alpn_protocols.push(b"http/1.1".to_vec());
+    config.alpn_protocols.push(b"h2".to_vec());
+
+    config
+}

actix-http/src/body/body_stream.rs

@@ -0,0 +1,215 @@
+use std::{
+    error::Error as StdError,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::Bytes;
+use futures_core::{ready, Stream};
+use pin_project_lite::pin_project;
+
+use super::{BodySize, MessageBody};
+
+pin_project! {
+    /// Streaming response wrapper.
+    ///
+    /// Response does not contain `Content-Length` header and appropriate transfer encoding is used.
+    pub struct BodyStream<S> {
+        #[pin]
+        stream: S,
+    }
+}
+
+// TODO: from_infallible method
+
+impl<S, E> BodyStream<S>
+where
+    S: Stream<Item = Result<Bytes, E>>,
+    E: Into<Box<dyn StdError>> + 'static,
+{
+    #[inline]
+    pub fn new(stream: S) -> Self {
+        BodyStream { stream }
+    }
+}
+
+impl<S, E> MessageBody for BodyStream<S>
+where
+    S: Stream<Item = Result<Bytes, E>>,
+    E: Into<Box<dyn StdError>> + 'static,
+{
+    type Error = E;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        BodySize::Stream
+    }
+
+    /// Attempts to pull out the next value of the underlying [`Stream`].
+    ///
+    /// Empty values are skipped to prevent [`BodyStream`]'s transmission being
+    /// ended on a zero-length chunk, but rather proceed until the underlying
+    /// [`Stream`] ends.
+    fn poll_next(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        loop {
+            let stream = self.as_mut().project().stream;
+
+            let chunk = match ready!(stream.poll_next(cx)) {
+                Some(Ok(ref bytes)) if bytes.is_empty() => continue,
+                opt => opt,
+            };
+
+            return Poll::Ready(chunk);
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::{convert::Infallible, time::Duration};
+
+    use actix_rt::{
+        pin,
+        time::{sleep, Sleep},
+    };
+    use actix_utils::future::poll_fn;
+    use derive_more::{Display, Error};
+    use futures_core::ready;
+    use futures_util::{stream, FutureExt as _};
+    use pin_project_lite::pin_project;
+    use static_assertions::{assert_impl_all, assert_not_impl_any};
+
+    use super::*;
+    use crate::body::to_bytes;
+
+    assert_impl_all!(BodyStream<stream::Empty<Result<Bytes, crate::Error>>>: MessageBody);
+    assert_impl_all!(BodyStream<stream::Empty<Result<Bytes, &'static str>>>: MessageBody);
+    assert_impl_all!(BodyStream<stream::Repeat<Result<Bytes, &'static str>>>: MessageBody);
+    assert_impl_all!(BodyStream<stream::Empty<Result<Bytes, Infallible>>>: MessageBody);
+    assert_impl_all!(BodyStream<stream::Repeat<Result<Bytes, Infallible>>>: MessageBody);
+
+    assert_not_impl_any!(BodyStream<stream::Empty<Bytes>>: MessageBody);
+    assert_not_impl_any!(BodyStream<stream::Repeat<Bytes>>: MessageBody);
+    // crate::Error is not Clone
+    assert_not_impl_any!(BodyStream<stream::Repeat<Result<Bytes, crate::Error>>>: MessageBody);
+
+    #[actix_rt::test]
+    async fn skips_empty_chunks() {
+        let body = BodyStream::new(stream::iter(
+            ["1", "", "2"]
+                .iter()
+                .map(|&v| Ok::<_, Infallible>(Bytes::from(v))),
+        ));
+        pin!(body);
+
+        assert_eq!(
+            poll_fn(|cx| body.as_mut().poll_next(cx))
+                .await
+                .unwrap()
+                .ok(),
+            Some(Bytes::from("1")),
+        );
+        assert_eq!(
+            poll_fn(|cx| body.as_mut().poll_next(cx))
+                .await
+                .unwrap()
+                .ok(),
+            Some(Bytes::from("2")),
+        );
+    }
+
+    #[actix_rt::test]
+    async fn read_to_bytes() {
+        let body = BodyStream::new(stream::iter(
+            ["1", "", "2"]
+                .iter()
+                .map(|&v| Ok::<_, Infallible>(Bytes::from(v))),
+        ));
+
+        assert_eq!(to_bytes(body).await.ok(), Some(Bytes::from("12")));
+    }
+    #[derive(Debug, Display, Error)]
+    #[display(fmt = "stream error")]
+    struct StreamErr;
+
+    #[actix_rt::test]
+    async fn stream_immediate_error() {
+        let body = BodyStream::new(stream::once(async { Err(StreamErr) }));
+        assert!(matches!(to_bytes(body).await, Err(StreamErr)));
+    }
+
+    #[actix_rt::test]
+    async fn stream_string_error() {
+        // `&'static str` does not impl `Error`
+        // but it does impl `Into<Box<dyn Error>>`
+
+        let body = BodyStream::new(stream::once(async { Err("stringy error") }));
+        assert!(matches!(to_bytes(body).await, Err("stringy error")));
+    }
+
+    #[actix_rt::test]
+    async fn stream_boxed_error() {
+        // `Box<dyn Error>` does not impl `Error`
+        // but it does impl `Into<Box<dyn Error>>`
+
+        let body = BodyStream::new(stream::once(async {
+            Err(Box::<dyn StdError>::from("stringy error"))
+        }));
+
+        assert_eq!(
+            to_bytes(body).await.unwrap_err().to_string(),
+            "stringy error"
+        );
+    }
+
+    #[actix_rt::test]
+    async fn stream_delayed_error() {
+        let body = BodyStream::new(stream::iter(vec![Ok(Bytes::from("1")), Err(StreamErr)]));
+        assert!(matches!(to_bytes(body).await, Err(StreamErr)));
+
+        pin_project! {
+            #[derive(Debug)]
+            #[project = TimeDelayStreamProj]
+            enum TimeDelayStream {
+                Start,
+                Sleep { delay: Pin<Box<Sleep>> },
+                Done,
+            }
+        }
+
+        impl Stream for TimeDelayStream {
+            type Item = Result<Bytes, StreamErr>;
+
+            fn poll_next(
+                mut self: Pin<&mut Self>,
+                cx: &mut Context<'_>,
+            ) -> Poll<Option<Self::Item>> {
+                match self.as_mut().get_mut() {
+                    TimeDelayStream::Start => {
+                        let sleep = sleep(Duration::from_millis(1));
+                        self.as_mut().set(TimeDelayStream::Sleep {
+                            delay: Box::pin(sleep),
+                        });
+                        cx.waker().wake_by_ref();
+                        Poll::Pending
+                    }
+
+                    TimeDelayStream::Sleep { ref mut delay } => {
+                        ready!(delay.poll_unpin(cx));
+                        self.set(TimeDelayStream::Done);
+                        cx.waker().wake_by_ref();
+                        Poll::Pending
+                    }
+
+                    TimeDelayStream::Done => Poll::Ready(Some(Err(StreamErr))),
+                }
+            }
+        }
+
+        let body = BodyStream::new(TimeDelayStream::Start);
+        assert!(matches!(to_bytes(body).await, Err(StreamErr)));
+    }
+}

actix-http/src/body/boxed.rs

@@ -0,0 +1,126 @@
+use std::{
+    error::Error as StdError,
+    fmt,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::Bytes;
+
+use super::{BodySize, MessageBody, MessageBodyMapErr};
+use crate::body;
+
+/// A boxed message body with boxed errors.
+#[derive(Debug)]
+pub struct BoxBody(BoxBodyInner);
+
+enum BoxBodyInner {
+    None(body::None),
+    Bytes(Bytes),
+    Stream(Pin<Box<dyn MessageBody<Error = Box<dyn StdError>>>>),
+}
+
+impl fmt::Debug for BoxBodyInner {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::None(arg0) => f.debug_tuple("None").field(arg0).finish(),
+            Self::Bytes(arg0) => f.debug_tuple("Bytes").field(arg0).finish(),
+            Self::Stream(_) => f.debug_tuple("Stream").field(&"dyn MessageBody").finish(),
+        }
+    }
+}
+
+impl BoxBody {
+    /// Boxes body type, erasing type information.
+    ///
+    /// If the body type to wrap is unknown or generic it is better to use [`MessageBody::boxed`] to
+    /// avoid double boxing.
+    #[inline]
+    pub fn new<B>(body: B) -> Self
+    where
+        B: MessageBody + 'static,
+    {
+        match body.size() {
+            BodySize::None => Self(BoxBodyInner::None(body::None)),
+            _ => match body.try_into_bytes() {
+                Ok(bytes) => Self(BoxBodyInner::Bytes(bytes)),
+                Err(body) => {
+                    let body = MessageBodyMapErr::new(body, Into::into);
+                    Self(BoxBodyInner::Stream(Box::pin(body)))
+                }
+            },
+        }
+    }
+
+    /// Returns a mutable pinned reference to the inner message body type.
+    #[inline]
+    pub fn as_pin_mut(&mut self) -> Pin<&mut Self> {
+        Pin::new(self)
+    }
+}
+
+impl MessageBody for BoxBody {
+    type Error = Box<dyn StdError>;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        match &self.0 {
+            BoxBodyInner::None(none) => none.size(),
+            BoxBodyInner::Bytes(bytes) => bytes.size(),
+            BoxBodyInner::Stream(stream) => stream.size(),
+        }
+    }
+
+    #[inline]
+    fn poll_next(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        match &mut self.0 {
+            BoxBodyInner::None(body) => {
+                Pin::new(body).poll_next(cx).map_err(|err| match err {})
+            }
+            BoxBodyInner::Bytes(body) => {
+                Pin::new(body).poll_next(cx).map_err(|err| match err {})
+            }
+            BoxBodyInner::Stream(body) => Pin::new(body).poll_next(cx),
+        }
+    }
+
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self> {
+        match self.0 {
+            BoxBodyInner::None(body) => Ok(body.try_into_bytes().unwrap()),
+            BoxBodyInner::Bytes(body) => Ok(body.try_into_bytes().unwrap()),
+            _ => Err(self),
+        }
+    }
+
+    #[inline]
+    fn boxed(self) -> BoxBody {
+        self
+    }
+}
+
+#[cfg(test)]
+mod tests {
+
+    use static_assertions::{assert_impl_all, assert_not_impl_any};
+
+    use super::*;
+    use crate::body::to_bytes;
+
+    assert_impl_all!(BoxBody: fmt::Debug, MessageBody, Unpin);
+    assert_not_impl_any!(BoxBody: Send, Sync);
+
+    #[actix_rt::test]
+    async fn nested_boxed_body() {
+        let body = Bytes::from_static(&[1, 2, 3]);
+        let boxed_body = BoxBody::new(BoxBody::new(body));
+
+        assert_eq!(
+            to_bytes(boxed_body).await.unwrap(),
+            Bytes::from(vec![1, 2, 3]),
+        );
+    }
+}

actix-http/src/body/either.rs

@@ -0,0 +1,122 @@
+use std::{
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::Bytes;
+use pin_project_lite::pin_project;
+
+use super::{BodySize, BoxBody, MessageBody};
+use crate::Error;
+
+pin_project! {
+    /// An "either" type specialized for body types.
+    ///
+    /// It is common, in middleware especially, to conditionally return an inner service's unknown/
+    /// generic body `B` type or return early with a new response. This type's "right" variant
+    /// defaults to `BoxBody` since error responses are the common case.
+    ///
+    /// For example, middleware will often have `type Response = ServiceResponse<EitherBody<B>>`.
+    /// This means that the inner service's response body type maps to the `Left` variant and the
+    /// middleware's own error responses use the default `Right` variant of `BoxBody`. Of course,
+    /// there's no reason it couldn't use `EitherBody<B, String>` instead if its alternative
+    /// responses have a known type.
+    #[project = EitherBodyProj]
+    #[derive(Debug, Clone)]
+    pub enum EitherBody<L, R = BoxBody> {
+        /// A body of type `L`.
+        Left { #[pin] body: L },
+
+        /// A body of type `R`.
+        Right { #[pin] body: R },
+    }
+}
+
+impl<L> EitherBody<L, BoxBody> {
+    /// Creates new `EitherBody` left variant with a boxed right variant.
+    ///
+    /// If the expected `R` type will be inferred and is not `BoxBody` then use the
+    /// [`left`](Self::left) constructor instead.
+    #[inline]
+    pub fn new(body: L) -> Self {
+        Self::Left { body }
+    }
+}
+
+impl<L, R> EitherBody<L, R> {
+    /// Creates new `EitherBody` using left variant.
+    #[inline]
+    pub fn left(body: L) -> Self {
+        Self::Left { body }
+    }
+
+    /// Creates new `EitherBody` using right variant.
+    #[inline]
+    pub fn right(body: R) -> Self {
+        Self::Right { body }
+    }
+}
+
+impl<L, R> MessageBody for EitherBody<L, R>
+where
+    L: MessageBody + 'static,
+    R: MessageBody + 'static,
+{
+    type Error = Error;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        match self {
+            EitherBody::Left { body } => body.size(),
+            EitherBody::Right { body } => body.size(),
+        }
+    }
+
+    #[inline]
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        match self.project() {
+            EitherBodyProj::Left { body } => body
+                .poll_next(cx)
+                .map_err(|err| Error::new_body().with_cause(err)),
+            EitherBodyProj::Right { body } => body
+                .poll_next(cx)
+                .map_err(|err| Error::new_body().with_cause(err)),
+        }
+    }
+
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self> {
+        match self {
+            EitherBody::Left { body } => body
+                .try_into_bytes()
+                .map_err(|body| EitherBody::Left { body }),
+            EitherBody::Right { body } => body
+                .try_into_bytes()
+                .map_err(|body| EitherBody::Right { body }),
+        }
+    }
+
+    #[inline]
+    fn boxed(self) -> BoxBody {
+        match self {
+            EitherBody::Left { body } => body.boxed(),
+            EitherBody::Right { body } => body.boxed(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn type_parameter_inference() {
+        let _body: EitherBody<(), _> = EitherBody::new(());
+
+        let _body: EitherBody<_, ()> = EitherBody::left(());
+        let _body: EitherBody<(), _> = EitherBody::right(());
+    }
+}

actix-http/src/body/message_body.rs

@@ -0,0 +1,609 @@
+//! [`MessageBody`] trait and foreign implementations.
+
+use std::{
+    convert::Infallible,
+    error::Error as StdError,
+    mem,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::{Bytes, BytesMut};
+use futures_core::ready;
+use pin_project_lite::pin_project;
+
+use super::{BodySize, BoxBody};
+
+/// An interface for types that can be used as a response body.
+///
+/// It is not usually necessary to create custom body types, this trait is already [implemented for
+/// a large number of sensible body types](#foreign-impls) including:
+/// - Empty body: `()`
+/// - Text-based: `String`, `&'static str`, [`ByteString`](https://docs.rs/bytestring/1).
+/// - Byte-based: `Bytes`, `BytesMut`, `Vec<u8>`, `&'static [u8]`;
+/// - Streams: [`BodyStream`](super::BodyStream), [`SizedStream`](super::SizedStream)
+///
+/// # Examples
+/// ```
+/// # use std::convert::Infallible;
+/// # use std::task::{Poll, Context};
+/// # use std::pin::Pin;
+/// # use bytes::Bytes;
+/// # use actix_http::body::{BodySize, MessageBody};
+/// struct Repeat {
+///     chunk: String,
+///     n_times: usize,
+/// }
+///
+/// impl MessageBody for Repeat {
+///     type Error = Infallible;
+///
+///     fn size(&self) -> BodySize {
+///         BodySize::Sized((self.chunk.len() * self.n_times) as u64)
+///     }
+///
+///     fn poll_next(
+///         self: Pin<&mut Self>,
+///         _cx: &mut Context<'_>,
+///     ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+///         let payload_string = self.chunk.repeat(self.n_times);
+///         let payload_bytes = Bytes::from(payload_string);
+///         Poll::Ready(Some(Ok(payload_bytes)))
+///     }
+/// }
+/// ```
+pub trait MessageBody {
+    /// The type of error that will be returned if streaming body fails.
+    ///
+    /// Since it is not appropriate to generate a response mid-stream, it only requires `Error` for
+    /// internal use and logging.
+    type Error: Into<Box<dyn StdError>>;
+
+    /// Body size hint.
+    ///
+    /// If [`BodySize::None`] is returned, optimizations that skip reading the body are allowed.
+    fn size(&self) -> BodySize;
+
+    /// Attempt to pull out the next chunk of body bytes.
+    ///
+    /// # Return Value
+    /// Similar to the `Stream` interface, there are several possible return values, each indicating
+    /// a distinct state:
+    /// - `Poll::Pending` means that this body's next chunk is not ready yet. Implementations must
+    ///   ensure that the current task will be notified when the next chunk may be ready.
+    /// - `Poll::Ready(Some(val))` means that the body has successfully produced a chunk, `val`,
+    ///   and may produce further values on subsequent `poll_next` calls.
+    /// - `Poll::Ready(None)` means that the body is complete, and `poll_next` should not be
+    ///   invoked again.
+    ///
+    /// # Panics
+    /// Once a body is complete (i.e., `poll_next` returned `Ready(None)`), calling its `poll_next`
+    /// method again may panic, block forever, or cause other kinds of problems; this trait places
+    /// no requirements on the effects of such a call. However, as the `poll_next` method is not
+    /// marked unsafe, Rust’s usual rules apply: calls must never cause UB, regardless of its state.
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>>;
+
+    /// Try to convert into the complete chunk of body bytes.
+    ///
+    /// Override this method if the complete body can be trivially extracted. This is useful for
+    /// optimizations where `poll_next` calls can be avoided.
+    ///
+    /// Body types with [`BodySize::None`] are allowed to return empty `Bytes`. Although, if calling
+    /// this method, it is recommended to check `size` first and return early.
+    ///
+    /// # Errors
+    /// The default implementation will error and return the original type back to the caller for
+    /// further use.
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self>
+    where
+        Self: Sized,
+    {
+        Err(self)
+    }
+
+    /// Wraps this body into a `BoxBody`.
+    ///
+    /// No-op when called on a `BoxBody`, meaning there is no risk of double boxing when calling
+    /// this on a generic `MessageBody`. Prefer this over [`BoxBody::new`] when a boxed body
+    /// is required.
+    #[inline]
+    fn boxed(self) -> BoxBody
+    where
+        Self: Sized + 'static,
+    {
+        BoxBody::new(self)
+    }
+}
+
+mod foreign_impls {
+    use super::*;
+
+    impl MessageBody for Infallible {
+        type Error = Infallible;
+
+        fn size(&self) -> BodySize {
+            match *self {}
+        }
+
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            match *self {}
+        }
+    }
+
+    impl MessageBody for () {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(0)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            Poll::Ready(None)
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(Bytes::new())
+        }
+    }
+
+    impl<B> MessageBody for Box<B>
+    where
+        B: MessageBody + Unpin + ?Sized,
+    {
+        type Error = B::Error;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            self.as_ref().size()
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            Pin::new(self.get_mut().as_mut()).poll_next(cx)
+        }
+    }
+
+    impl<B> MessageBody for Pin<Box<B>>
+    where
+        B: MessageBody + ?Sized,
+    {
+        type Error = B::Error;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            self.as_ref().size()
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            self.get_mut().as_mut().poll_next(cx)
+        }
+    }
+
+    impl MessageBody for &'static [u8] {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                Poll::Ready(Some(Ok(Bytes::from_static(mem::take(self.get_mut())))))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(Bytes::from_static(self))
+        }
+    }
+
+    impl MessageBody for Bytes {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                Poll::Ready(Some(Ok(mem::take(self.get_mut()))))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(self)
+        }
+    }
+
+    impl MessageBody for BytesMut {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                Poll::Ready(Some(Ok(mem::take(self.get_mut()).freeze())))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(self.freeze())
+        }
+    }
+
+    impl MessageBody for Vec<u8> {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                Poll::Ready(Some(Ok(mem::take(self.get_mut()).into())))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(Bytes::from(self))
+        }
+    }
+
+    impl MessageBody for &'static str {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                let string = mem::take(self.get_mut());
+                let bytes = Bytes::from_static(string.as_bytes());
+                Poll::Ready(Some(Ok(bytes)))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(Bytes::from_static(self.as_bytes()))
+        }
+    }
+
+    impl MessageBody for String {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            if self.is_empty() {
+                Poll::Ready(None)
+            } else {
+                let string = mem::take(self.get_mut());
+                Poll::Ready(Some(Ok(Bytes::from(string))))
+            }
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(Bytes::from(self))
+        }
+    }
+
+    impl MessageBody for bytestring::ByteString {
+        type Error = Infallible;
+
+        #[inline]
+        fn size(&self) -> BodySize {
+            BodySize::Sized(self.len() as u64)
+        }
+
+        #[inline]
+        fn poll_next(
+            self: Pin<&mut Self>,
+            _cx: &mut Context<'_>,
+        ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+            let string = mem::take(self.get_mut());
+            Poll::Ready(Some(Ok(string.into_bytes())))
+        }
+
+        #[inline]
+        fn try_into_bytes(self) -> Result<Bytes, Self> {
+            Ok(self.into_bytes())
+        }
+    }
+}
+
+pin_project! {
+    pub(crate) struct MessageBodyMapErr<B, F> {
+        #[pin]
+        body: B,
+        mapper: Option<F>,
+    }
+}
+
+impl<B, F, E> MessageBodyMapErr<B, F>
+where
+    B: MessageBody,
+    F: FnOnce(B::Error) -> E,
+{
+    pub(crate) fn new(body: B, mapper: F) -> Self {
+        Self {
+            body,
+            mapper: Some(mapper),
+        }
+    }
+}
+
+impl<B, F, E> MessageBody for MessageBodyMapErr<B, F>
+where
+    B: MessageBody,
+    F: FnOnce(B::Error) -> E,
+    E: Into<Box<dyn StdError>>,
+{
+    type Error = E;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        self.body.size()
+    }
+
+    fn poll_next(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        let this = self.as_mut().project();
+
+        match ready!(this.body.poll_next(cx)) {
+            Some(Err(err)) => {
+                let f = self.as_mut().project().mapper.take().unwrap();
+                let mapped_err = (f)(err);
+                Poll::Ready(Some(Err(mapped_err)))
+            }
+            Some(Ok(val)) => Poll::Ready(Some(Ok(val))),
+            None => Poll::Ready(None),
+        }
+    }
+
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self> {
+        let Self { body, mapper } = self;
+        body.try_into_bytes().map_err(|body| Self { body, mapper })
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use actix_rt::pin;
+    use actix_utils::future::poll_fn;
+    use bytes::{Bytes, BytesMut};
+
+    use super::*;
+    use crate::body::{self, EitherBody};
+
+    macro_rules! assert_poll_next {
+        ($pin:expr, $exp:expr) => {
+            assert_eq!(
+                poll_fn(|cx| $pin.as_mut().poll_next(cx))
+                    .await
+                    .unwrap() // unwrap option
+                    .unwrap(), // unwrap result
+                $exp
+            );
+        };
+    }
+
+    macro_rules! assert_poll_next_none {
+        ($pin:expr) => {
+            assert!(poll_fn(|cx| $pin.as_mut().poll_next(cx)).await.is_none());
+        };
+    }
+
+    #[actix_rt::test]
+    async fn boxing_equivalence() {
+        assert_eq!(().size(), BodySize::Sized(0));
+        assert_eq!(().size(), Box::new(()).size());
+        assert_eq!(().size(), Box::pin(()).size());
+
+        let pl = Box::new(());
+        pin!(pl);
+        assert_poll_next_none!(pl);
+
+        let mut pl = Box::pin(());
+        assert_poll_next_none!(pl);
+    }
+
+    #[actix_rt::test]
+    async fn test_unit() {
+        let pl = ();
+        assert_eq!(pl.size(), BodySize::Sized(0));
+        pin!(pl);
+        assert_poll_next_none!(pl);
+    }
+
+    #[actix_rt::test]
+    async fn test_static_str() {
+        assert_eq!("".size(), BodySize::Sized(0));
+        assert_eq!("test".size(), BodySize::Sized(4));
+
+        let pl = "test";
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn test_static_bytes() {
+        assert_eq!(b"".as_ref().size(), BodySize::Sized(0));
+        assert_eq!(b"test".as_ref().size(), BodySize::Sized(4));
+
+        let pl = b"test".as_ref();
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn test_vec() {
+        assert_eq!(vec![0; 0].size(), BodySize::Sized(0));
+        assert_eq!(Vec::from("test").size(), BodySize::Sized(4));
+
+        let pl = Vec::from("test");
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn test_bytes() {
+        assert_eq!(Bytes::new().size(), BodySize::Sized(0));
+        assert_eq!(Bytes::from_static(b"test").size(), BodySize::Sized(4));
+
+        let pl = Bytes::from_static(b"test");
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn test_bytes_mut() {
+        assert_eq!(BytesMut::new().size(), BodySize::Sized(0));
+        assert_eq!(BytesMut::from(b"test".as_ref()).size(), BodySize::Sized(4));
+
+        let pl = BytesMut::from("test");
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn test_string() {
+        assert_eq!(String::new().size(), BodySize::Sized(0));
+        assert_eq!("test".to_owned().size(), BodySize::Sized(4));
+
+        let pl = "test".to_owned();
+        pin!(pl);
+        assert_poll_next!(pl, Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn complete_body_combinators() {
+        let body = Bytes::from_static(b"test");
+        let body = BoxBody::new(body);
+        let body = EitherBody::<_, ()>::left(body);
+        let body = EitherBody::<(), _>::right(body);
+        // Do not support try_into_bytes:
+        // let body = Box::new(body);
+        // let body = Box::pin(body);
+
+        assert_eq!(body.try_into_bytes().unwrap(), Bytes::from("test"));
+    }
+
+    #[actix_rt::test]
+    async fn complete_body_combinators_poll() {
+        let body = Bytes::from_static(b"test");
+        let body = BoxBody::new(body);
+        let body = EitherBody::<_, ()>::left(body);
+        let body = EitherBody::<(), _>::right(body);
+        let mut body = body;
+
+        assert_eq!(body.size(), BodySize::Sized(4));
+        assert_poll_next!(Pin::new(&mut body), Bytes::from("test"));
+        assert_poll_next_none!(Pin::new(&mut body));
+    }
+
+    #[actix_rt::test]
+    async fn none_body_combinators() {
+        fn none_body() -> BoxBody {
+            let body = body::None;
+            let body = BoxBody::new(body);
+            let body = EitherBody::<_, ()>::left(body);
+            let body = EitherBody::<(), _>::right(body);
+            body.boxed()
+        }
+
+        assert_eq!(none_body().size(), BodySize::None);
+        assert_eq!(none_body().try_into_bytes().unwrap(), Bytes::new());
+        assert_poll_next_none!(Pin::new(&mut none_body()));
+    }
+
+    // down-casting used to be done with a method on MessageBody trait
+    // test is kept to demonstrate equivalence of Any trait
+    #[actix_rt::test]
+    async fn test_body_casting() {
+        let mut body = String::from("hello cast");
+        // let mut resp_body: &mut dyn MessageBody<Error = Error> = &mut body;
+        let resp_body: &mut dyn std::any::Any = &mut body;
+        let body = resp_body.downcast_ref::<String>().unwrap();
+        assert_eq!(body, "hello cast");
+        let body = &mut resp_body.downcast_mut::<String>().unwrap();
+        body.push('!');
+        let body = resp_body.downcast_ref::<String>().unwrap();
+        assert_eq!(body, "hello cast!");
+        let not_body = resp_body.downcast_ref::<()>();
+        assert!(not_body.is_none());
+    }
+}

actix-http/src/body/mod.rs

@@ -0,0 +1,25 @@
+//! Traits and structures to aid consuming and writing HTTP payloads.
+//!
+//! "Body" and "payload" are used somewhat interchangeably in this documentation.
+
+// Though the spec kinda reads like "payload" is the possibly-transfer-encoded part of the message
+// and the "body" is the intended possibly-decoded version of that.
+
+mod body_stream;
+mod boxed;
+mod either;
+mod message_body;
+mod none;
+mod size;
+mod sized_stream;
+mod utils;
+
+pub use self::body_stream::BodyStream;
+pub use self::boxed::BoxBody;
+pub use self::either::EitherBody;
+pub use self::message_body::MessageBody;
+pub(crate) use self::message_body::MessageBodyMapErr;
+pub use self::none::None;
+pub use self::size::BodySize;
+pub use self::sized_stream::SizedStream;
+pub use self::utils::to_bytes;

actix-http/src/body/none.rs

@@ -0,0 +1,51 @@
+use std::{
+    convert::Infallible,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::Bytes;
+
+use super::{BodySize, MessageBody};
+
+/// Body type for responses that forbid payloads.
+///
+/// This is distinct from an "empty" response which _would_ contain a `Content-Length` header.
+/// For an "empty" body, use `()` or `Bytes::new()`.
+///
+/// For example, the HTTP spec forbids a payload to be sent with a `204 No Content` response.
+/// In this case, the payload (or lack thereof) is implicit from the status code, so a
+/// `Content-Length` header is not required.
+#[derive(Debug, Clone, Copy, Default)]
+#[non_exhaustive]
+pub struct None;
+
+impl None {
+    /// Constructs new "none" body.
+    #[inline]
+    pub fn new() -> Self {
+        None
+    }
+}
+
+impl MessageBody for None {
+    type Error = Infallible;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        BodySize::None
+    }
+
+    #[inline]
+    fn poll_next(
+        self: Pin<&mut Self>,
+        _cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        Poll::Ready(Option::None)
+    }
+
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self> {
+        Ok(Bytes::new())
+    }
+}

actix-http/src/body/size.rs

@@ -0,0 +1,41 @@
+/// Body size hint.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BodySize {
+    /// Implicitly empty body.
+    ///
+    /// Will omit the Content-Length header. Used for responses to certain methods (e.g., `HEAD`) or
+    /// with particular status codes (e.g., 204 No Content). Consumers that read this as a body size
+    /// hint are allowed to make optimizations that skip reading or writing the payload.
+    None,
+
+    /// Known size body.
+    ///
+    /// Will write `Content-Length: N` header.
+    Sized(u64),
+
+    /// Unknown size body.
+    ///
+    /// Will not write Content-Length header. Can be used with chunked Transfer-Encoding.
+    Stream,
+}
+
+impl BodySize {
+    /// Equivalent to `BodySize::Sized(0)`;
+    pub const ZERO: Self = Self::Sized(0);
+
+    /// Returns true if size hint indicates omitted or empty body.
+    ///
+    /// Streams will return false because it cannot be known without reading the stream.
+    ///
+    /// ```
+    /// # use actix_http::body::BodySize;
+    /// assert!(BodySize::None.is_eof());
+    /// assert!(BodySize::Sized(0).is_eof());
+    ///
+    /// assert!(!BodySize::Sized(64).is_eof());
+    /// assert!(!BodySize::Stream.is_eof());
+    /// ```
+    pub fn is_eof(&self) -> bool {
+        matches!(self, BodySize::None | BodySize::Sized(0))
+    }
+}

actix-http/src/body/sized_stream.rs

@@ -0,0 +1,171 @@
+use std::{
+    error::Error as StdError,
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use bytes::Bytes;
+use futures_core::{ready, Stream};
+use pin_project_lite::pin_project;
+
+use super::{BodySize, MessageBody};
+
+pin_project! {
+    /// Known sized streaming response wrapper.
+    ///
+    /// This body implementation should be used if total size of stream is known. Data is sent as-is
+    /// without using chunked transfer encoding.
+    pub struct SizedStream<S> {
+        size: u64,
+        #[pin]
+        stream: S,
+    }
+}
+
+impl<S, E> SizedStream<S>
+where
+    S: Stream<Item = Result<Bytes, E>>,
+    E: Into<Box<dyn StdError>> + 'static,
+{
+    #[inline]
+    pub fn new(size: u64, stream: S) -> Self {
+        SizedStream { size, stream }
+    }
+}
+
+// TODO: from_infallible method
+
+impl<S, E> MessageBody for SizedStream<S>
+where
+    S: Stream<Item = Result<Bytes, E>>,
+    E: Into<Box<dyn StdError>> + 'static,
+{
+    type Error = E;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        BodySize::Sized(self.size as u64)
+    }
+
+    /// Attempts to pull out the next value of the underlying [`Stream`].
+    ///
+    /// Empty values are skipped to prevent [`SizedStream`]'s transmission being
+    /// ended on a zero-length chunk, but rather proceed until the underlying
+    /// [`Stream`] ends.
+    fn poll_next(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        loop {
+            let stream = self.as_mut().project().stream;
+
+            let chunk = match ready!(stream.poll_next(cx)) {
+                Some(Ok(ref bytes)) if bytes.is_empty() => continue,
+                val => val,
+            };
+
+            return Poll::Ready(chunk);
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::convert::Infallible;
+
+    use actix_rt::pin;
+    use actix_utils::future::poll_fn;
+    use futures_util::stream;
+    use static_assertions::{assert_impl_all, assert_not_impl_any};
+
+    use super::*;
+    use crate::body::to_bytes;
+
+    assert_impl_all!(SizedStream<stream::Empty<Result<Bytes, crate::Error>>>: MessageBody);
+    assert_impl_all!(SizedStream<stream::Empty<Result<Bytes, &'static str>>>: MessageBody);
+    assert_impl_all!(SizedStream<stream::Repeat<Result<Bytes, &'static str>>>: MessageBody);
+    assert_impl_all!(SizedStream<stream::Empty<Result<Bytes, Infallible>>>: MessageBody);
+    assert_impl_all!(SizedStream<stream::Repeat<Result<Bytes, Infallible>>>: MessageBody);
+
+    assert_not_impl_any!(SizedStream<stream::Empty<Bytes>>: MessageBody);
+    assert_not_impl_any!(SizedStream<stream::Repeat<Bytes>>: MessageBody);
+    // crate::Error is not Clone
+    assert_not_impl_any!(SizedStream<stream::Repeat<Result<Bytes, crate::Error>>>: MessageBody);
+
+    #[actix_rt::test]
+    async fn skips_empty_chunks() {
+        let body = SizedStream::new(
+            2,
+            stream::iter(
+                ["1", "", "2"]
+                    .iter()
+                    .map(|&v| Ok::<_, Infallible>(Bytes::from(v))),
+            ),
+        );
+
+        pin!(body);
+
+        assert_eq!(
+            poll_fn(|cx| body.as_mut().poll_next(cx))
+                .await
+                .unwrap()
+                .ok(),
+            Some(Bytes::from("1")),
+        );
+
+        assert_eq!(
+            poll_fn(|cx| body.as_mut().poll_next(cx))
+                .await
+                .unwrap()
+                .ok(),
+            Some(Bytes::from("2")),
+        );
+    }
+
+    #[actix_rt::test]
+    async fn read_to_bytes() {
+        let body = SizedStream::new(
+            2,
+            stream::iter(
+                ["1", "", "2"]
+                    .iter()
+                    .map(|&v| Ok::<_, Infallible>(Bytes::from(v))),
+            ),
+        );
+
+        assert_eq!(to_bytes(body).await.ok(), Some(Bytes::from("12")));
+    }
+
+    #[actix_rt::test]
+    async fn stream_string_error() {
+        // `&'static str` does not impl `Error`
+        // but it does impl `Into<Box<dyn Error>>`
+
+        let body = SizedStream::new(0, stream::once(async { Err("stringy error") }));
+        assert_eq!(to_bytes(body).await, Ok(Bytes::new()));
+
+        let body = SizedStream::new(1, stream::once(async { Err("stringy error") }));
+        assert!(matches!(to_bytes(body).await, Err("stringy error")));
+    }
+
+    #[actix_rt::test]
+    async fn stream_boxed_error() {
+        // `Box<dyn Error>` does not impl `Error`
+        // but it does impl `Into<Box<dyn Error>>`
+
+        let body = SizedStream::new(
+            0,
+            stream::once(async { Err(Box::<dyn StdError>::from("stringy error")) }),
+        );
+        assert_eq!(to_bytes(body).await.unwrap(), Bytes::new());
+
+        let body = SizedStream::new(
+            1,
+            stream::once(async { Err(Box::<dyn StdError>::from("stringy error")) }),
+        );
+        assert_eq!(
+            to_bytes(body).await.unwrap_err().to_string(),
+            "stringy error"
+        );
+    }
+}

actix-http/src/body/utils.rs

@@ -0,0 +1,77 @@
+use std::task::Poll;
+
+use actix_rt::pin;
+use actix_utils::future::poll_fn;
+use bytes::{Bytes, BytesMut};
+use futures_core::ready;
+
+use super::{BodySize, MessageBody};
+
+/// Collects the body produced by a `MessageBody` implementation into `Bytes`.
+///
+/// Any errors produced by the body stream are returned immediately.
+///
+/// # Examples
+/// ```
+/// use actix_http::body::{self, to_bytes};
+/// use bytes::Bytes;
+///
+/// # async fn test_to_bytes() {
+/// let body = body::None::new();
+/// let bytes = to_bytes(body).await.unwrap();
+/// assert!(bytes.is_empty());
+///
+/// let body = Bytes::from_static(b"123");
+/// let bytes = to_bytes(body).await.unwrap();
+/// assert_eq!(bytes, b"123"[..]);
+/// # }
+/// ```
+pub async fn to_bytes<B: MessageBody>(body: B) -> Result<Bytes, B::Error> {
+    let cap = match body.size() {
+        BodySize::None | BodySize::Sized(0) => return Ok(Bytes::new()),
+        BodySize::Sized(size) => size as usize,
+        // good enough first guess for chunk size
+        BodySize::Stream => 32_768,
+    };
+
+    let mut buf = BytesMut::with_capacity(cap);
+
+    pin!(body);
+
+    poll_fn(|cx| loop {
+        let body = body.as_mut();
+
+        match ready!(body.poll_next(cx)) {
+            Some(Ok(bytes)) => buf.extend_from_slice(&*bytes),
+            None => return Poll::Ready(Ok(())),
+            Some(Err(err)) => return Poll::Ready(Err(err)),
+        }
+    })
+    .await?;
+
+    Ok(buf.freeze())
+}
+
+#[cfg(test)]
+mod test {
+    use futures_util::{stream, StreamExt as _};
+
+    use super::*;
+    use crate::{body::BodyStream, Error};
+
+    #[actix_rt::test]
+    async fn test_to_bytes() {
+        let bytes = to_bytes(()).await.unwrap();
+        assert!(bytes.is_empty());
+
+        let body = Bytes::from_static(b"123");
+        let bytes = to_bytes(body).await.unwrap();
+        assert_eq!(bytes, b"123"[..]);
+
+        let stream = stream::iter(vec![Bytes::from_static(b"123"), Bytes::from_static(b"abc")])
+            .map(Ok::<_, Error>);
+        let body = BodyStream::new(stream);
+        let bytes = to_bytes(body).await.unwrap();
+        assert_eq!(bytes, b"123abc"[..]);
+    }
+}

actix-http/src/builder.rs

@@ -0,0 +1,258 @@
+use std::{fmt, marker::PhantomData, net, rc::Rc, time::Duration};
+
+use actix_codec::Framed;
+use actix_service::{IntoServiceFactory, Service, ServiceFactory};
+
+use crate::{
+    body::{BoxBody, MessageBody},
+    h1::{self, ExpectHandler, H1Service, UpgradeHandler},
+    service::HttpService,
+    ConnectCallback, Extensions, KeepAlive, Request, Response, ServiceConfig,
+};
+
+/// An HTTP service builder.
+///
+/// This type can construct an instance of [`HttpService`] through a builder-like pattern.
+pub struct HttpServiceBuilder<T, S, X = ExpectHandler, U = UpgradeHandler> {
+    keep_alive: KeepAlive,
+    client_request_timeout: Duration,
+    client_disconnect_timeout: Duration,
+    secure: bool,
+    local_addr: Option<net::SocketAddr>,
+    expect: X,
+    upgrade: Option<U>,
+    on_connect_ext: Option<Rc<ConnectCallback<T>>>,
+    _phantom: PhantomData<S>,
+}
+
+impl<T, S> Default for HttpServiceBuilder<T, S, ExpectHandler, UpgradeHandler>
+where
+    S: ServiceFactory<Request, Config = ()>,
+    S::Error: Into<Response<BoxBody>> + 'static,
+    S::InitError: fmt::Debug,
+    <S::Service as Service<Request>>::Future: 'static,
+{
+    fn default() -> Self {
+        HttpServiceBuilder {
+            // ServiceConfig parts (make sure defaults match)
+            keep_alive: KeepAlive::default(),
+            client_request_timeout: Duration::from_secs(5),
+            client_disconnect_timeout: Duration::ZERO,
+            secure: false,
+            local_addr: None,
+
+            // dispatcher parts
+            expect: ExpectHandler,
+            upgrade: None,
+            on_connect_ext: None,
+            _phantom: PhantomData,
+        }
+    }
+}
+
+impl<T, S, X, U> HttpServiceBuilder<T, S, X, U>
+where
+    S: ServiceFactory<Request, Config = ()>,
+    S::Error: Into<Response<BoxBody>> + 'static,
+    S::InitError: fmt::Debug,
+    <S::Service as Service<Request>>::Future: 'static,
+    X: ServiceFactory<Request, Config = (), Response = Request>,
+    X::Error: Into<Response<BoxBody>>,
+    X::InitError: fmt::Debug,
+    U: ServiceFactory<(Request, Framed<T, h1::Codec>), Config = (), Response = ()>,
+    U::Error: fmt::Display,
+    U::InitError: fmt::Debug,
+{
+    /// Set connection keep-alive setting.
+    ///
+    /// Applies to HTTP/1.1 keep-alive and HTTP/2 ping-pong.
+    ///
+    /// By default keep-alive is 5 seconds.
+    pub fn keep_alive<W: Into<KeepAlive>>(mut self, val: W) -> Self {
+        self.keep_alive = val.into();
+        self
+    }
+
+    /// Set connection secure state
+    pub fn secure(mut self) -> Self {
+        self.secure = true;
+        self
+    }
+
+    /// Set the local address that this service is bound to.
+    pub fn local_addr(mut self, addr: net::SocketAddr) -> Self {
+        self.local_addr = Some(addr);
+        self
+    }
+
+    /// Set client request timeout (for first request).
+    ///
+    /// Defines a timeout for reading client request header. If the client does not transmit the
+    /// request head within this duration, the connection is terminated with a `408 Request Timeout`
+    /// response error.
+    ///
+    /// A duration of zero disables the timeout.
+    ///
+    /// By default, the client timeout is 5 seconds.
+    pub fn client_request_timeout(mut self, dur: Duration) -> Self {
+        self.client_request_timeout = dur;
+        self
+    }
+
+    #[doc(hidden)]
+    #[deprecated(since = "3.0.0", note = "Renamed to `client_request_timeout`.")]
+    pub fn client_timeout(self, dur: Duration) -> Self {
+        self.client_request_timeout(dur)
+    }
+
+    /// Set client connection disconnect timeout.
+    ///
+    /// Defines a timeout for disconnect connection. If a disconnect procedure does not complete
+    /// within this time, the request get dropped. This timeout affects secure connections.
+    ///
+    /// A duration of zero disables the timeout.
+    ///
+    /// By default, the disconnect timeout is disabled.
+    pub fn client_disconnect_timeout(mut self, dur: Duration) -> Self {
+        self.client_disconnect_timeout = dur;
+        self
+    }
+
+    #[doc(hidden)]
+    #[deprecated(since = "3.0.0", note = "Renamed to `client_disconnect_timeout`.")]
+    pub fn client_disconnect(self, dur: Duration) -> Self {
+        self.client_disconnect_timeout(dur)
+    }
+
+    /// Provide service for `EXPECT: 100-Continue` support.
+    ///
+    /// Service get called with request that contains `EXPECT` header.
+    /// Service must return request in case of success, in that case
+    /// request will be forwarded to main service.
+    pub fn expect<F, X1>(self, expect: F) -> HttpServiceBuilder<T, S, X1, U>
+    where
+        F: IntoServiceFactory<X1, Request>,
+        X1: ServiceFactory<Request, Config = (), Response = Request>,
+        X1::Error: Into<Response<BoxBody>>,
+        X1::InitError: fmt::Debug,
+    {
+        HttpServiceBuilder {
+            keep_alive: self.keep_alive,
+            client_request_timeout: self.client_request_timeout,
+            client_disconnect_timeout: self.client_disconnect_timeout,
+            secure: self.secure,
+            local_addr: self.local_addr,
+            expect: expect.into_factory(),
+            upgrade: self.upgrade,
+            on_connect_ext: self.on_connect_ext,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Provide service for custom `Connection: UPGRADE` support.
+    ///
+    /// If service is provided then normal requests handling get halted
+    /// and this service get called with original request and framed object.
+    pub fn upgrade<F, U1>(self, upgrade: F) -> HttpServiceBuilder<T, S, X, U1>
+    where
+        F: IntoServiceFactory<U1, (Request, Framed<T, h1::Codec>)>,
+        U1: ServiceFactory<(Request, Framed<T, h1::Codec>), Config = (), Response = ()>,
+        U1::Error: fmt::Display,
+        U1::InitError: fmt::Debug,
+    {
+        HttpServiceBuilder {
+            keep_alive: self.keep_alive,
+            client_request_timeout: self.client_request_timeout,
+            client_disconnect_timeout: self.client_disconnect_timeout,
+            secure: self.secure,
+            local_addr: self.local_addr,
+            expect: self.expect,
+            upgrade: Some(upgrade.into_factory()),
+            on_connect_ext: self.on_connect_ext,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Sets the callback to be run on connection establishment.
+    ///
+    /// Has mutable access to a data container that will be merged into request extensions.
+    /// This enables transport layer data (like client certificates) to be accessed in middleware
+    /// and handlers.
+    pub fn on_connect_ext<F>(mut self, f: F) -> Self
+    where
+        F: Fn(&T, &mut Extensions) + 'static,
+    {
+        self.on_connect_ext = Some(Rc::new(f));
+        self
+    }
+
+    /// Finish service configuration and create a HTTP Service for HTTP/1 protocol.
+    pub fn h1<F, B>(self, service: F) -> H1Service<T, S, B, X, U>
+    where
+        B: MessageBody,
+        F: IntoServiceFactory<S, Request>,
+        S::Error: Into<Response<BoxBody>>,
+        S::InitError: fmt::Debug,
+        S::Response: Into<Response<B>>,
+    {
+        let cfg = ServiceConfig::new(
+            self.keep_alive,
+            self.client_request_timeout,
+            self.client_disconnect_timeout,
+            self.secure,
+            self.local_addr,
+        );
+
+        H1Service::with_config(cfg, service.into_factory())
+            .expect(self.expect)
+            .upgrade(self.upgrade)
+            .on_connect_ext(self.on_connect_ext)
+    }
+
+    /// Finish service configuration and create a HTTP service for HTTP/2 protocol.
+    #[cfg(feature = "http2")]
+    pub fn h2<F, B>(self, service: F) -> crate::h2::H2Service<T, S, B>
+    where
+        F: IntoServiceFactory<S, Request>,
+        S::Error: Into<Response<BoxBody>> + 'static,
+        S::InitError: fmt::Debug,
+        S::Response: Into<Response<B>> + 'static,
+
+        B: MessageBody + 'static,
+    {
+        let cfg = ServiceConfig::new(
+            self.keep_alive,
+            self.client_request_timeout,
+            self.client_disconnect_timeout,
+            self.secure,
+            self.local_addr,
+        );
+
+        crate::h2::H2Service::with_config(cfg, service.into_factory())
+            .on_connect_ext(self.on_connect_ext)
+    }
+
+    /// Finish service configuration and create `HttpService` instance.
+    pub fn finish<F, B>(self, service: F) -> HttpService<T, S, B, X, U>
+    where
+        F: IntoServiceFactory<S, Request>,
+        S::Error: Into<Response<BoxBody>> + 'static,
+        S::InitError: fmt::Debug,
+        S::Response: Into<Response<B>> + 'static,
+
+        B: MessageBody + 'static,
+    {
+        let cfg = ServiceConfig::new(
+            self.keep_alive,
+            self.client_request_timeout,
+            self.client_disconnect_timeout,
+            self.secure,
+            self.local_addr,
+        );
+
+        HttpService::with_config(cfg, service.into_factory())
+            .expect(self.expect)
+            .upgrade(self.upgrade)
+            .on_connect_ext(self.on_connect_ext)
+    }
+}

actix-http/src/config.rs

@@ -0,0 +1,236 @@
+use std::{
+    net,
+    rc::Rc,
+    time::{Duration, Instant},
+};
+
+use bytes::BytesMut;
+
+use crate::{date::DateService, KeepAlive};
+
+/// HTTP service configuration.
+#[derive(Debug, Clone)]
+pub struct ServiceConfig(Rc<Inner>);
+
+#[derive(Debug)]
+struct Inner {
+    keep_alive: KeepAlive,
+    client_request_timeout: Duration,
+    client_disconnect_timeout: Duration,
+    secure: bool,
+    local_addr: Option<std::net::SocketAddr>,
+    date_service: DateService,
+}
+
+impl Default for ServiceConfig {
+    fn default() -> Self {
+        Self::new(
+            KeepAlive::default(),
+            Duration::from_secs(5),
+            Duration::ZERO,
+            false,
+            None,
+        )
+    }
+}
+
+impl ServiceConfig {
+    /// Create instance of `ServiceConfig`
+    pub fn new(
+        keep_alive: KeepAlive,
+        client_request_timeout: Duration,
+        client_disconnect_timeout: Duration,
+        secure: bool,
+        local_addr: Option<net::SocketAddr>,
+    ) -> ServiceConfig {
+        ServiceConfig(Rc::new(Inner {
+            keep_alive: keep_alive.normalize(),
+            client_request_timeout,
+            client_disconnect_timeout,
+            secure,
+            local_addr,
+            date_service: DateService::new(),
+        }))
+    }
+
+    /// Returns `true` if connection is secure (i.e., using TLS / HTTPS).
+    #[inline]
+    pub fn secure(&self) -> bool {
+        self.0.secure
+    }
+
+    /// Returns the local address that this server is bound to.
+    ///
+    /// Returns `None` for connections via UDS (Unix Domain Socket).
+    #[inline]
+    pub fn local_addr(&self) -> Option<net::SocketAddr> {
+        self.0.local_addr
+    }
+
+    /// Connection keep-alive setting.
+    #[inline]
+    pub fn keep_alive(&self) -> KeepAlive {
+        self.0.keep_alive
+    }
+
+    /// Creates a time object representing the deadline for this connection's keep-alive period, if
+    /// enabled.
+    ///
+    /// When [`KeepAlive::Os`] or [`KeepAlive::Disabled`] is set, this will return `None`.
+    pub fn keep_alive_deadline(&self) -> Option<Instant> {
+        match self.keep_alive() {
+            KeepAlive::Timeout(dur) => Some(self.now() + dur),
+            KeepAlive::Os => None,
+            KeepAlive::Disabled => None,
+        }
+    }
+
+    /// Creates a time object representing the deadline for the client to finish sending the head of
+    /// its first request.
+    ///
+    /// Returns `None` if this `ServiceConfig was` constructed with `client_request_timeout: 0`.
+    pub fn client_request_deadline(&self) -> Option<Instant> {
+        let timeout = self.0.client_request_timeout;
+        (timeout != Duration::ZERO).then(|| self.now() + timeout)
+    }
+
+    /// Creates a time object representing the deadline for the client to disconnect.
+    pub fn client_disconnect_deadline(&self) -> Option<Instant> {
+        let timeout = self.0.client_disconnect_timeout;
+        (timeout != Duration::ZERO).then(|| self.now() + timeout)
+    }
+
+    pub(crate) fn now(&self) -> Instant {
+        self.0.date_service.now()
+    }
+
+    /// Writes date header to `dst` buffer.
+    ///
+    /// Low-level method that utilizes the built-in efficient date service, requiring fewer syscalls
+    /// than normal. Note that a CRLF (`\r\n`) is included in what is written.
+    #[doc(hidden)]
+    pub fn write_date_header(&self, dst: &mut BytesMut, camel_case: bool) {
+        let mut buf: [u8; 37] = [0; 37];
+
+        buf[..6].copy_from_slice(if camel_case { b"Date: " } else { b"date: " });
+
+        self.0
+            .date_service
+            .with_date(|date| buf[6..35].copy_from_slice(&date.bytes));
+
+        buf[35..].copy_from_slice(b"\r\n");
+        dst.extend_from_slice(&buf);
+    }
+
+    #[allow(unused)] // used with `http2` feature flag
+    pub(crate) fn write_date_header_value(&self, dst: &mut BytesMut) {
+        self.0
+            .date_service
+            .with_date(|date| dst.extend_from_slice(&date.bytes));
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{date::DATE_VALUE_LENGTH, notify_on_drop};
+
+    use actix_rt::{
+        task::yield_now,
+        time::{sleep, sleep_until},
+    };
+    use memchr::memmem;
+
+    #[actix_rt::test]
+    async fn test_date_service_update() {
+        let settings =
+            ServiceConfig::new(KeepAlive::Os, Duration::ZERO, Duration::ZERO, false, None);
+
+        yield_now().await;
+
+        let mut buf1 = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf1, false);
+        let now1 = settings.now();
+
+        sleep_until((Instant::now() + Duration::from_secs(2)).into()).await;
+        yield_now().await;
+
+        let now2 = settings.now();
+        let mut buf2 = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf2, false);
+
+        assert_ne!(now1, now2);
+
+        assert_ne!(buf1, buf2);
+
+        drop(settings);
+
+        // Ensure the task will drop eventually
+        let mut times = 0;
+        while !notify_on_drop::is_dropped() {
+            sleep(Duration::from_millis(100)).await;
+            times += 1;
+            assert!(times < 10, "Timeout waiting for task drop");
+        }
+    }
+
+    #[actix_rt::test]
+    async fn test_date_service_drop() {
+        let service = Rc::new(DateService::new());
+
+        // yield so date service have a chance to register the spawned timer update task.
+        yield_now().await;
+
+        let clone1 = service.clone();
+        let clone2 = service.clone();
+        let clone3 = service.clone();
+
+        drop(clone1);
+        assert!(!notify_on_drop::is_dropped());
+        drop(clone2);
+        assert!(!notify_on_drop::is_dropped());
+        drop(clone3);
+        assert!(!notify_on_drop::is_dropped());
+
+        drop(service);
+
+        // Ensure the task will drop eventually
+        let mut times = 0;
+        while !notify_on_drop::is_dropped() {
+            sleep(Duration::from_millis(100)).await;
+            times += 1;
+            assert!(times < 10, "Timeout waiting for task drop");
+        }
+    }
+
+    #[test]
+    fn test_date_len() {
+        assert_eq!(DATE_VALUE_LENGTH, "Sun, 06 Nov 1994 08:49:37 GMT".len());
+    }
+
+    #[actix_rt::test]
+    async fn test_date() {
+        let settings = ServiceConfig::default();
+
+        let mut buf1 = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf1, false);
+
+        let mut buf2 = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf2, false);
+
+        assert_eq!(buf1, buf2);
+    }
+
+    #[actix_rt::test]
+    async fn test_date_camel_case() {
+        let settings = ServiceConfig::default();
+
+        let mut buf = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf, false);
+        assert!(memmem::find(&buf, b"date:").is_some());
+
+        let mut buf = BytesMut::with_capacity(DATE_VALUE_LENGTH + 10);
+        settings.write_date_header(&mut buf, true);
+        assert!(memmem::find(&buf, b"Date:").is_some());
+    }
+}

actix-http/src/date.rs

@@ -0,0 +1,92 @@
+use std::{
+    cell::Cell,
+    fmt::{self, Write},
+    rc::Rc,
+    time::{Duration, Instant, SystemTime},
+};
+
+use actix_rt::{task::JoinHandle, time::interval};
+
+/// "Thu, 01 Jan 1970 00:00:00 GMT".len()
+pub(crate) const DATE_VALUE_LENGTH: usize = 29;
+
+#[derive(Clone, Copy)]
+pub(crate) struct Date {
+    pub(crate) bytes: [u8; DATE_VALUE_LENGTH],
+    pos: usize,
+}
+
+impl Date {
+    fn new() -> Date {
+        let mut date = Date {
+            bytes: [0; DATE_VALUE_LENGTH],
+            pos: 0,
+        };
+        date.update();
+        date
+    }
+
+    fn update(&mut self) {
+        self.pos = 0;
+        write!(self, "{}", httpdate::fmt_http_date(SystemTime::now())).unwrap();
+    }
+}
+
+impl fmt::Write for Date {
+    fn write_str(&mut self, s: &str) -> fmt::Result {
+        let len = s.len();
+        self.bytes[self.pos..self.pos + len].copy_from_slice(s.as_bytes());
+        self.pos += len;
+        Ok(())
+    }
+}
+
+/// Service for update Date and Instant periodically at 500 millis interval.
+pub(crate) struct DateService {
+    current: Rc<Cell<(Date, Instant)>>,
+    handle: JoinHandle<()>,
+}
+
+impl DateService {
+    pub(crate) fn new() -> Self {
+        // shared date and timer for DateService and update async task.
+        let current = Rc::new(Cell::new((Date::new(), Instant::now())));
+        let current_clone = Rc::clone(&current);
+        // spawn an async task sleep for 500 millis and update current date/timer in a loop.
+        // handle is used to stop the task on DateService drop.
+        let handle = actix_rt::spawn(async move {
+            #[cfg(test)]
+            let _notify = crate::notify_on_drop::NotifyOnDrop::new();
+
+            let mut interval = interval(Duration::from_millis(500));
+            loop {
+                let now = interval.tick().await;
+                let date = Date::new();
+                current_clone.set((date, now.into_std()));
+            }
+        });
+
+        DateService { current, handle }
+    }
+
+    pub(crate) fn now(&self) -> Instant {
+        self.current.get().1
+    }
+
+    pub(crate) fn with_date<F: FnMut(&Date)>(&self, mut f: F) {
+        f(&self.current.get().0);
+    }
+}
+
+impl fmt::Debug for DateService {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("DateService").finish_non_exhaustive()
+    }
+}
+
+impl Drop for DateService {
+    fn drop(&mut self) {
+        // stop the timer update async task on drop.
+        self.handle.abort();
+    }
+}

actix-http/src/encoding/decoder.rs

@@ -0,0 +1,304 @@
+//! Stream decoders.
+
+use std::{
+    future::Future,
+    io::{self, Write as _},
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use actix_rt::task::{spawn_blocking, JoinHandle};
+use bytes::Bytes;
+use futures_core::{ready, Stream};
+
+#[cfg(feature = "compress-gzip")]
+use flate2::write::{GzDecoder, ZlibDecoder};
+
+#[cfg(feature = "compress-zstd")]
+use zstd::stream::write::Decoder as ZstdDecoder;
+
+use crate::{
+    encoding::Writer,
+    error::PayloadError,
+    header::{ContentEncoding, HeaderMap, CONTENT_ENCODING},
+};
+
+const MAX_CHUNK_SIZE_DECODE_IN_PLACE: usize = 2049;
+
+pin_project_lite::pin_project! {
+    pub struct Decoder<S> {
+        decoder: Option<ContentDecoder>,
+        #[pin]
+        stream: S,
+        eof: bool,
+        fut: Option<JoinHandle<Result<(Option<Bytes>, ContentDecoder), io::Error>>>,
+    }
+}
+
+impl<S> Decoder<S>
+where
+    S: Stream<Item = Result<Bytes, PayloadError>>,
+{
+    /// Construct a decoder.
+    #[inline]
+    pub fn new(stream: S, encoding: ContentEncoding) -> Decoder<S> {
+        let decoder = match encoding {
+            #[cfg(feature = "compress-brotli")]
+            ContentEncoding::Brotli => Some(ContentDecoder::Brotli(Box::new(
+                brotli::DecompressorWriter::new(Writer::new(), 8_096),
+            ))),
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoding::Deflate => Some(ContentDecoder::Deflate(Box::new(
+                ZlibDecoder::new(Writer::new()),
+            ))),
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoding::Gzip => Some(ContentDecoder::Gzip(Box::new(GzDecoder::new(
+                Writer::new(),
+            )))),
+
+            #[cfg(feature = "compress-zstd")]
+            ContentEncoding::Zstd => Some(ContentDecoder::Zstd(Box::new(
+                ZstdDecoder::new(Writer::new()).expect(
+                    "Failed to create zstd decoder. This is a bug. \
+                         Please report it to the actix-web repository.",
+                ),
+            ))),
+            _ => None,
+        };
+
+        Decoder {
+            decoder,
+            stream,
+            fut: None,
+            eof: false,
+        }
+    }
+
+    /// Construct decoder based on headers.
+    #[inline]
+    pub fn from_headers(stream: S, headers: &HeaderMap) -> Decoder<S> {
+        // check content-encoding
+        let encoding = headers
+            .get(&CONTENT_ENCODING)
+            .and_then(|val| val.to_str().ok())
+            .and_then(|x| x.parse().ok())
+            .unwrap_or(ContentEncoding::Identity);
+
+        Self::new(stream, encoding)
+    }
+}
+
+impl<S> Stream for Decoder<S>
+where
+    S: Stream<Item = Result<Bytes, PayloadError>>,
+{
+    type Item = Result<Bytes, PayloadError>;
+
+    fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
+        let mut this = self.project();
+
+        loop {
+            if let Some(ref mut fut) = this.fut {
+                let (chunk, decoder) = ready!(Pin::new(fut).poll(cx)).map_err(|_| {
+                    PayloadError::Io(io::Error::new(
+                        io::ErrorKind::Other,
+                        "Blocking task was cancelled unexpectedly",
+                    ))
+                })??;
+
+                *this.decoder = Some(decoder);
+                this.fut.take();
+
+                if let Some(chunk) = chunk {
+                    return Poll::Ready(Some(Ok(chunk)));
+                }
+            }
+
+            if *this.eof {
+                return Poll::Ready(None);
+            }
+
+            match ready!(this.stream.as_mut().poll_next(cx)) {
+                Some(Err(err)) => return Poll::Ready(Some(Err(err))),
+
+                Some(Ok(chunk)) => {
+                    if let Some(mut decoder) = this.decoder.take() {
+                        if chunk.len() < MAX_CHUNK_SIZE_DECODE_IN_PLACE {
+                            let chunk = decoder.feed_data(chunk)?;
+                            *this.decoder = Some(decoder);
+
+                            if let Some(chunk) = chunk {
+                                return Poll::Ready(Some(Ok(chunk)));
+                            }
+                        } else {
+                            *this.fut = Some(spawn_blocking(move || {
+                                let chunk = decoder.feed_data(chunk)?;
+                                Ok((chunk, decoder))
+                            }));
+                        }
+
+                        continue;
+                    } else {
+                        return Poll::Ready(Some(Ok(chunk)));
+                    }
+                }
+
+                None => {
+                    *this.eof = true;
+
+                    return if let Some(mut decoder) = this.decoder.take() {
+                        match decoder.feed_eof() {
+                            Ok(Some(res)) => Poll::Ready(Some(Ok(res))),
+                            Ok(None) => Poll::Ready(None),
+                            Err(err) => Poll::Ready(Some(Err(err.into()))),
+                        }
+                    } else {
+                        Poll::Ready(None)
+                    };
+                }
+            }
+        }
+    }
+}
+
+enum ContentDecoder {
+    #[cfg(feature = "compress-gzip")]
+    Deflate(Box<ZlibDecoder<Writer>>),
+
+    #[cfg(feature = "compress-gzip")]
+    Gzip(Box<GzDecoder<Writer>>),
+
+    #[cfg(feature = "compress-brotli")]
+    Brotli(Box<brotli::DecompressorWriter<Writer>>),
+
+    // We need explicit 'static lifetime here because ZstdDecoder need lifetime
+    // argument, and we use `spawn_blocking` in `Decoder::poll_next` that require `FnOnce() -> R + Send + 'static`
+    #[cfg(feature = "compress-zstd")]
+    Zstd(Box<ZstdDecoder<'static, Writer>>),
+}
+
+impl ContentDecoder {
+    fn feed_eof(&mut self) -> io::Result<Option<Bytes>> {
+        match self {
+            #[cfg(feature = "compress-brotli")]
+            ContentDecoder::Brotli(ref mut decoder) => match decoder.flush() {
+                Ok(()) => {
+                    let b = decoder.get_mut().take();
+
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentDecoder::Gzip(ref mut decoder) => match decoder.try_finish() {
+                Ok(_) => {
+                    let b = decoder.get_mut().take();
+
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentDecoder::Deflate(ref mut decoder) => match decoder.try_finish() {
+                Ok(_) => {
+                    let b = decoder.get_mut().take();
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-zstd")]
+            ContentDecoder::Zstd(ref mut decoder) => match decoder.flush() {
+                Ok(_) => {
+                    let b = decoder.get_mut().take();
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+        }
+    }
+
+    fn feed_data(&mut self, data: Bytes) -> io::Result<Option<Bytes>> {
+        match self {
+            #[cfg(feature = "compress-brotli")]
+            ContentDecoder::Brotli(ref mut decoder) => match decoder.write_all(&data) {
+                Ok(_) => {
+                    decoder.flush()?;
+                    let b = decoder.get_mut().take();
+
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentDecoder::Gzip(ref mut decoder) => match decoder.write_all(&data) {
+                Ok(_) => {
+                    decoder.flush()?;
+                    let b = decoder.get_mut().take();
+
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentDecoder::Deflate(ref mut decoder) => match decoder.write_all(&data) {
+                Ok(_) => {
+                    decoder.flush()?;
+
+                    let b = decoder.get_mut().take();
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+
+            #[cfg(feature = "compress-zstd")]
+            ContentDecoder::Zstd(ref mut decoder) => match decoder.write_all(&data) {
+                Ok(_) => {
+                    decoder.flush()?;
+
+                    let b = decoder.get_mut().take();
+                    if !b.is_empty() {
+                        Ok(Some(b))
+                    } else {
+                        Ok(None)
+                    }
+                }
+                Err(e) => Err(e),
+            },
+        }
+    }
+}

actix-http/src/encoding/encoder.rs

@@ -0,0 +1,429 @@
+//! Stream encoders.
+
+use std::{
+    error::Error as StdError,
+    future::Future,
+    io::{self, Write as _},
+    pin::Pin,
+    task::{Context, Poll},
+};
+
+use actix_rt::task::{spawn_blocking, JoinHandle};
+use bytes::Bytes;
+use derive_more::Display;
+use futures_core::ready;
+use pin_project_lite::pin_project;
+
+#[cfg(feature = "compress-gzip")]
+use flate2::write::{GzEncoder, ZlibEncoder};
+
+#[cfg(feature = "compress-zstd")]
+use zstd::stream::write::Encoder as ZstdEncoder;
+
+use super::Writer;
+use crate::{
+    body::{self, BodySize, MessageBody},
+    header::{self, ContentEncoding, HeaderValue, CONTENT_ENCODING},
+    ResponseHead, StatusCode,
+};
+
+const MAX_CHUNK_SIZE_ENCODE_IN_PLACE: usize = 1024;
+
+pin_project! {
+    pub struct Encoder<B> {
+        #[pin]
+        body: EncoderBody<B>,
+        encoder: Option<ContentEncoder>,
+        fut: Option<JoinHandle<Result<ContentEncoder, io::Error>>>,
+        eof: bool,
+    }
+}
+
+impl<B: MessageBody> Encoder<B> {
+    fn none() -> Self {
+        Encoder {
+            body: EncoderBody::None {
+                body: body::None::new(),
+            },
+            encoder: None,
+            fut: None,
+            eof: true,
+        }
+    }
+
+    pub fn response(encoding: ContentEncoding, head: &mut ResponseHead, body: B) -> Self {
+        // no need to compress an empty body
+        if matches!(body.size(), BodySize::None) {
+            return Self::none();
+        }
+
+        let should_encode = !(head.headers().contains_key(&CONTENT_ENCODING)
+            || head.status == StatusCode::SWITCHING_PROTOCOLS
+            || head.status == StatusCode::NO_CONTENT
+            || encoding == ContentEncoding::Identity);
+
+        let body = match body.try_into_bytes() {
+            Ok(body) => EncoderBody::Full { body },
+            Err(body) => EncoderBody::Stream { body },
+        };
+
+        if should_encode {
+            // wrap body only if encoder is feature-enabled
+            if let Some(enc) = ContentEncoder::select(encoding) {
+                update_head(encoding, head);
+
+                return Encoder {
+                    body,
+                    encoder: Some(enc),
+                    fut: None,
+                    eof: false,
+                };
+            }
+        }
+
+        Encoder {
+            body,
+            encoder: None,
+            fut: None,
+            eof: false,
+        }
+    }
+}
+
+pin_project! {
+    #[project = EncoderBodyProj]
+    enum EncoderBody<B> {
+        None { body: body::None },
+        Full { body: Bytes },
+        Stream { #[pin] body: B },
+    }
+}
+
+impl<B> MessageBody for EncoderBody<B>
+where
+    B: MessageBody,
+{
+    type Error = EncoderError;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        match self {
+            EncoderBody::None { body } => body.size(),
+            EncoderBody::Full { body } => body.size(),
+            EncoderBody::Stream { body } => body.size(),
+        }
+    }
+
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        match self.project() {
+            EncoderBodyProj::None { body } => {
+                Pin::new(body).poll_next(cx).map_err(|err| match err {})
+            }
+            EncoderBodyProj::Full { body } => {
+                Pin::new(body).poll_next(cx).map_err(|err| match err {})
+            }
+            EncoderBodyProj::Stream { body } => body
+                .poll_next(cx)
+                .map_err(|err| EncoderError::Body(err.into())),
+        }
+    }
+
+    #[inline]
+    fn try_into_bytes(self) -> Result<Bytes, Self>
+    where
+        Self: Sized,
+    {
+        match self {
+            EncoderBody::None { body } => Ok(body.try_into_bytes().unwrap()),
+            EncoderBody::Full { body } => Ok(body.try_into_bytes().unwrap()),
+            _ => Err(self),
+        }
+    }
+}
+
+impl<B> MessageBody for Encoder<B>
+where
+    B: MessageBody,
+{
+    type Error = EncoderError;
+
+    #[inline]
+    fn size(&self) -> BodySize {
+        if self.encoder.is_some() {
+            BodySize::Stream
+        } else {
+            self.body.size()
+        }
+    }
+
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, Self::Error>>> {
+        let mut this = self.project();
+
+        loop {
+            if *this.eof {
+                return Poll::Ready(None);
+            }
+
+            if let Some(ref mut fut) = this.fut {
+                let mut encoder = ready!(Pin::new(fut).poll(cx))
+                    .map_err(|_| {
+                        EncoderError::Io(io::Error::new(
+                            io::ErrorKind::Other,
+                            "Blocking task was cancelled unexpectedly",
+                        ))
+                    })?
+                    .map_err(EncoderError::Io)?;
+
+                let chunk = encoder.take();
+                *this.encoder = Some(encoder);
+                this.fut.take();
+
+                if !chunk.is_empty() {
+                    return Poll::Ready(Some(Ok(chunk)));
+                }
+            }
+
+            let result = ready!(this.body.as_mut().poll_next(cx));
+
+            match result {
+                Some(Err(err)) => return Poll::Ready(Some(Err(err))),
+
+                Some(Ok(chunk)) => {
+                    if let Some(mut encoder) = this.encoder.take() {
+                        if chunk.len() < MAX_CHUNK_SIZE_ENCODE_IN_PLACE {
+                            encoder.write(&chunk).map_err(EncoderError::Io)?;
+                            let chunk = encoder.take();
+                            *this.encoder = Some(encoder);
+
+                            if !chunk.is_empty() {
+                                return Poll::Ready(Some(Ok(chunk)));
+                            }
+                        } else {
+                            *this.fut = Some(spawn_blocking(move || {
+                                encoder.write(&chunk)?;
+                                Ok(encoder)
+                            }));
+                        }
+                    } else {
+                        return Poll::Ready(Some(Ok(chunk)));
+                    }
+                }
+
+                None => {
+                    if let Some(encoder) = this.encoder.take() {
+                        let chunk = encoder.finish().map_err(EncoderError::Io)?;
+
+                        if chunk.is_empty() {
+                            return Poll::Ready(None);
+                        } else {
+                            *this.eof = true;
+                            return Poll::Ready(Some(Ok(chunk)));
+                        }
+                    } else {
+                        return Poll::Ready(None);
+                    }
+                }
+            }
+        }
+    }
+
+    #[inline]
+    fn try_into_bytes(mut self) -> Result<Bytes, Self>
+    where
+        Self: Sized,
+    {
+        if self.encoder.is_some() {
+            Err(self)
+        } else {
+            match self.body.try_into_bytes() {
+                Ok(body) => Ok(body),
+                Err(body) => {
+                    self.body = body;
+                    Err(self)
+                }
+            }
+        }
+    }
+}
+
+fn update_head(encoding: ContentEncoding, head: &mut ResponseHead) {
+    head.headers_mut()
+        .insert(header::CONTENT_ENCODING, encoding.to_header_value());
+    head.headers_mut()
+        .insert(header::VARY, HeaderValue::from_static("accept-encoding"));
+
+    head.no_chunking(false);
+}
+
+enum ContentEncoder {
+    #[cfg(feature = "compress-gzip")]
+    Deflate(ZlibEncoder<Writer>),
+
+    #[cfg(feature = "compress-gzip")]
+    Gzip(GzEncoder<Writer>),
+
+    #[cfg(feature = "compress-brotli")]
+    Brotli(Box<brotli::CompressorWriter<Writer>>),
+
+    // Wwe need explicit 'static lifetime here because ZstdEncoder needs a lifetime argument and we
+    // use `spawn_blocking` in `Encoder::poll_next` that requires `FnOnce() -> R + Send + 'static`.
+    #[cfg(feature = "compress-zstd")]
+    Zstd(ZstdEncoder<'static, Writer>),
+}
+
+impl ContentEncoder {
+    fn select(encoding: ContentEncoding) -> Option<Self> {
+        match encoding {
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoding::Deflate => Some(ContentEncoder::Deflate(ZlibEncoder::new(
+                Writer::new(),
+                flate2::Compression::fast(),
+            ))),
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoding::Gzip => Some(ContentEncoder::Gzip(GzEncoder::new(
+                Writer::new(),
+                flate2::Compression::fast(),
+            ))),
+
+            #[cfg(feature = "compress-brotli")]
+            ContentEncoding::Brotli => Some(ContentEncoder::Brotli(new_brotli_compressor())),
+
+            #[cfg(feature = "compress-zstd")]
+            ContentEncoding::Zstd => {
+                let encoder = ZstdEncoder::new(Writer::new(), 3).ok()?;
+                Some(ContentEncoder::Zstd(encoder))
+            }
+
+            _ => None,
+        }
+    }
+
+    #[inline]
+    pub(crate) fn take(&mut self) -> Bytes {
+        match *self {
+            #[cfg(feature = "compress-brotli")]
+            ContentEncoder::Brotli(ref mut encoder) => encoder.get_mut().take(),
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Deflate(ref mut encoder) => encoder.get_mut().take(),
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Gzip(ref mut encoder) => encoder.get_mut().take(),
+
+            #[cfg(feature = "compress-zstd")]
+            ContentEncoder::Zstd(ref mut encoder) => encoder.get_mut().take(),
+        }
+    }
+
+    fn finish(self) -> Result<Bytes, io::Error> {
+        match self {
+            #[cfg(feature = "compress-brotli")]
+            ContentEncoder::Brotli(mut encoder) => match encoder.flush() {
+                Ok(()) => Ok(encoder.into_inner().buf.freeze()),
+                Err(err) => Err(err),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Gzip(encoder) => match encoder.finish() {
+                Ok(writer) => Ok(writer.buf.freeze()),
+                Err(err) => Err(err),
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Deflate(encoder) => match encoder.finish() {
+                Ok(writer) => Ok(writer.buf.freeze()),
+                Err(err) => Err(err),
+            },
+
+            #[cfg(feature = "compress-zstd")]
+            ContentEncoder::Zstd(encoder) => match encoder.finish() {
+                Ok(writer) => Ok(writer.buf.freeze()),
+                Err(err) => Err(err),
+            },
+        }
+    }
+
+    fn write(&mut self, data: &[u8]) -> Result<(), io::Error> {
+        match *self {
+            #[cfg(feature = "compress-brotli")]
+            ContentEncoder::Brotli(ref mut encoder) => match encoder.write_all(data) {
+                Ok(_) => Ok(()),
+                Err(err) => {
+                    log::trace!("Error decoding br encoding: {}", err);
+                    Err(err)
+                }
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Gzip(ref mut encoder) => match encoder.write_all(data) {
+                Ok(_) => Ok(()),
+                Err(err) => {
+                    log::trace!("Error decoding gzip encoding: {}", err);
+                    Err(err)
+                }
+            },
+
+            #[cfg(feature = "compress-gzip")]
+            ContentEncoder::Deflate(ref mut encoder) => match encoder.write_all(data) {
+                Ok(_) => Ok(()),
+                Err(err) => {
+                    log::trace!("Error decoding deflate encoding: {}", err);
+                    Err(err)
+                }
+            },
+
+            #[cfg(feature = "compress-zstd")]
+            ContentEncoder::Zstd(ref mut encoder) => match encoder.write_all(data) {
+                Ok(_) => Ok(()),
+                Err(err) => {
+                    log::trace!("Error decoding ztsd encoding: {}", err);
+                    Err(err)
+                }
+            },
+        }
+    }
+}
+
+#[cfg(feature = "compress-brotli")]
+fn new_brotli_compressor() -> Box<brotli::CompressorWriter<Writer>> {
+    Box::new(brotli::CompressorWriter::new(
+        Writer::new(),
+        32 * 1024, // 32 KiB buffer
+        3,         // BROTLI_PARAM_QUALITY
+        22,        // BROTLI_PARAM_LGWIN
+    ))
+}
+
+#[derive(Debug, Display)]
+#[non_exhaustive]
+pub enum EncoderError {
+    /// Wrapped body stream error.
+    #[display(fmt = "body")]
+    Body(Box<dyn StdError>),
+
+    /// Generic I/O error.
+    #[display(fmt = "io")]
+    Io(io::Error),
+}
+
+impl StdError for EncoderError {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        match self {
+            EncoderError::Body(err) => Some(&**err),
+            EncoderError::Io(err) => Some(err),
+        }
+    }
+}
+
+impl From<EncoderError> for crate::Error {
+    fn from(err: EncoderError) -> Self {
+        crate::Error::new_encoder().with_cause(err)
+    }
+}

actix-http/src/encoding/mod.rs

@@ -0,0 +1,41 @@
+//! Content-Encoding support.
+
+use std::io;
+
+use bytes::{Bytes, BytesMut};
+
+mod decoder;
+mod encoder;
+
+pub use self::decoder::Decoder;
+pub use self::encoder::Encoder;
+
+/// Special-purpose writer for streaming (de-)compression.
+///
+/// Pre-allocates 8KiB of capacity.
+pub(self) struct Writer {
+    buf: BytesMut,
+}
+
+impl Writer {
+    fn new() -> Writer {
+        Writer {
+            buf: BytesMut::with_capacity(8192),
+        }
+    }
+
+    fn take(&mut self) -> Bytes {
+        self.buf.split().freeze()
+    }
+}
+
+impl io::Write for Writer {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        self.buf.extend_from_slice(buf);
+        Ok(buf.len())
+    }
+
+    fn flush(&mut self) -> io::Result<()> {
+        Ok(())
+    }
+}

actix-http/src/error.rs

@@ -0,0 +1,493 @@
+//! Error and Result module
+
+use std::{error::Error as StdError, fmt, io, str::Utf8Error, string::FromUtf8Error};
+
+use derive_more::{Display, Error, From};
+use http::{uri::InvalidUri, StatusCode};
+
+use crate::{body::BoxBody, Response};
+
+pub use http::Error as HttpError;
+
+pub struct Error {
+    inner: Box<ErrorInner>,
+}
+
+pub(crate) struct ErrorInner {
+    #[allow(dead_code)]
+    kind: Kind,
+    cause: Option<Box<dyn StdError>>,
+}
+
+impl Error {
+    fn new(kind: Kind) -> Self {
+        Self {
+            inner: Box::new(ErrorInner { kind, cause: None }),
+        }
+    }
+
+    pub(crate) fn with_cause(mut self, cause: impl Into<Box<dyn StdError>>) -> Self {
+        self.inner.cause = Some(cause.into());
+        self
+    }
+
+    pub(crate) fn new_http() -> Self {
+        Self::new(Kind::Http)
+    }
+
+    pub(crate) fn new_parse() -> Self {
+        Self::new(Kind::Parse)
+    }
+
+    pub(crate) fn new_payload() -> Self {
+        Self::new(Kind::Payload)
+    }
+
+    pub(crate) fn new_body() -> Self {
+        Self::new(Kind::Body)
+    }
+
+    pub(crate) fn new_send_response() -> Self {
+        Self::new(Kind::SendResponse)
+    }
+
+    #[allow(unused)] // available for future use
+    pub(crate) fn new_io() -> Self {
+        Self::new(Kind::Io)
+    }
+
+    #[allow(unused)] // used in encoder behind feature flag so ignore unused warning
+    pub(crate) fn new_encoder() -> Self {
+        Self::new(Kind::Encoder)
+    }
+
+    #[allow(unused)] // used with `ws` feature flag
+    pub(crate) fn new_ws() -> Self {
+        Self::new(Kind::Ws)
+    }
+}
+
+impl From<Error> for Response<BoxBody> {
+    fn from(err: Error) -> Self {
+        // TODO: more appropriate error status codes, usage assessment needed
+        let status_code = match err.inner.kind {
+            Kind::Parse => StatusCode::BAD_REQUEST,
+            _ => StatusCode::INTERNAL_SERVER_ERROR,
+        };
+
+        Response::new(status_code).set_body(BoxBody::new(err.to_string()))
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Display)]
+pub(crate) enum Kind {
+    #[display(fmt = "error processing HTTP")]
+    Http,
+
+    #[display(fmt = "error parsing HTTP message")]
+    Parse,
+
+    #[display(fmt = "request payload read error")]
+    Payload,
+
+    #[display(fmt = "response body write error")]
+    Body,
+
+    #[display(fmt = "send response error")]
+    SendResponse,
+
+    #[display(fmt = "error in WebSocket process")]
+    Ws,
+
+    #[display(fmt = "connection error")]
+    Io,
+
+    #[display(fmt = "encoder error")]
+    Encoder,
+}
+
+impl fmt::Debug for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("actix_http::Error")
+            .field("kind", &self.inner.kind)
+            .field("cause", &self.inner.cause)
+            .finish()
+    }
+}
+
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self.inner.cause.as_ref() {
+            Some(err) => write!(f, "{}: {}", &self.inner.kind, err),
+            None => write!(f, "{}", &self.inner.kind),
+        }
+    }
+}
+
+impl StdError for Error {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        self.inner.cause.as_ref().map(Box::as_ref)
+    }
+}
+
+impl From<std::convert::Infallible> for Error {
+    fn from(err: std::convert::Infallible) -> Self {
+        match err {}
+    }
+}
+
+impl From<HttpError> for Error {
+    fn from(err: HttpError) -> Self {
+        Self::new_http().with_cause(err)
+    }
+}
+
+#[cfg(feature = "ws")]
+impl From<crate::ws::HandshakeError> for Error {
+    fn from(err: crate::ws::HandshakeError) -> Self {
+        Self::new_ws().with_cause(err)
+    }
+}
+
+#[cfg(feature = "ws")]
+impl From<crate::ws::ProtocolError> for Error {
+    fn from(err: crate::ws::ProtocolError) -> Self {
+        Self::new_ws().with_cause(err)
+    }
+}
+
+/// A set of errors that can occur during parsing HTTP streams.
+#[derive(Debug, Display, Error)]
+#[non_exhaustive]
+pub enum ParseError {
+    /// An invalid `Method`, such as `GE.T`.
+    #[display(fmt = "Invalid Method specified")]
+    Method,
+
+    /// An invalid `Uri`, such as `exam ple.domain`.
+    #[display(fmt = "Uri error: {}", _0)]
+    Uri(InvalidUri),
+
+    /// An invalid `HttpVersion`, such as `HTP/1.1`
+    #[display(fmt = "Invalid HTTP version specified")]
+    Version,
+
+    /// An invalid `Header`.
+    #[display(fmt = "Invalid Header provided")]
+    Header,
+
+    /// A message head is too large to be reasonable.
+    #[display(fmt = "Message head is too large")]
+    TooLarge,
+
+    /// A message reached EOF, but is not complete.
+    #[display(fmt = "Message is incomplete")]
+    Incomplete,
+
+    /// An invalid `Status`, such as `1337 ELITE`.
+    #[display(fmt = "Invalid Status provided")]
+    Status,
+
+    /// A timeout occurred waiting for an IO event.
+    #[allow(dead_code)]
+    #[display(fmt = "Timeout")]
+    Timeout,
+
+    /// An `io::Error` that occurred while trying to read or write to a network stream.
+    #[display(fmt = "IO error: {}", _0)]
+    Io(io::Error),
+
+    /// Parsing a field as string failed.
+    #[display(fmt = "UTF8 error: {}", _0)]
+    Utf8(Utf8Error),
+}
+
+impl From<io::Error> for ParseError {
+    fn from(err: io::Error) -> ParseError {
+        ParseError::Io(err)
+    }
+}
+
+impl From<InvalidUri> for ParseError {
+    fn from(err: InvalidUri) -> ParseError {
+        ParseError::Uri(err)
+    }
+}
+
+impl From<Utf8Error> for ParseError {
+    fn from(err: Utf8Error) -> ParseError {
+        ParseError::Utf8(err)
+    }
+}
+
+impl From<FromUtf8Error> for ParseError {
+    fn from(err: FromUtf8Error) -> ParseError {
+        ParseError::Utf8(err.utf8_error())
+    }
+}
+
+impl From<httparse::Error> for ParseError {
+    fn from(err: httparse::Error) -> ParseError {
+        match err {
+            httparse::Error::HeaderName
+            | httparse::Error::HeaderValue
+            | httparse::Error::NewLine
+            | httparse::Error::Token => ParseError::Header,
+            httparse::Error::Status => ParseError::Status,
+            httparse::Error::TooManyHeaders => ParseError::TooLarge,
+            httparse::Error::Version => ParseError::Version,
+        }
+    }
+}
+
+impl From<ParseError> for Error {
+    fn from(err: ParseError) -> Self {
+        Self::new_parse().with_cause(err)
+    }
+}
+
+impl From<ParseError> for Response<BoxBody> {
+    fn from(err: ParseError) -> Self {
+        Error::from(err).into()
+    }
+}
+
+/// A set of errors that can occur during payload parsing.
+#[derive(Debug, Display)]
+#[non_exhaustive]
+pub enum PayloadError {
+    /// A payload reached EOF, but is not complete.
+    #[display(
+        fmt = "A payload reached EOF, but is not complete. Inner error: {:?}",
+        _0
+    )]
+    Incomplete(Option<io::Error>),
+
+    /// Content encoding stream corruption.
+    #[display(fmt = "Can not decode content-encoding.")]
+    EncodingCorrupted,
+
+    /// Payload reached size limit.
+    #[display(fmt = "Payload reached size limit.")]
+    Overflow,
+
+    /// Payload length is unknown.
+    #[display(fmt = "Payload length is unknown.")]
+    UnknownLength,
+
+    /// HTTP/2 payload error.
+    #[cfg(feature = "http2")]
+    #[display(fmt = "{}", _0)]
+    Http2Payload(::h2::Error),
+
+    /// Generic I/O error.
+    #[display(fmt = "{}", _0)]
+    Io(io::Error),
+}
+
+impl std::error::Error for PayloadError {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            PayloadError::Incomplete(None) => None,
+            PayloadError::Incomplete(Some(err)) => Some(err),
+            PayloadError::EncodingCorrupted => None,
+            PayloadError::Overflow => None,
+            PayloadError::UnknownLength => None,
+            #[cfg(feature = "http2")]
+            PayloadError::Http2Payload(err) => Some(err),
+            PayloadError::Io(err) => Some(err),
+        }
+    }
+}
+
+#[cfg(feature = "http2")]
+impl From<::h2::Error> for PayloadError {
+    fn from(err: ::h2::Error) -> Self {
+        PayloadError::Http2Payload(err)
+    }
+}
+
+impl From<Option<io::Error>> for PayloadError {
+    fn from(err: Option<io::Error>) -> Self {
+        PayloadError::Incomplete(err)
+    }
+}
+
+impl From<io::Error> for PayloadError {
+    fn from(err: io::Error) -> Self {
+        PayloadError::Incomplete(Some(err))
+    }
+}
+
+impl From<PayloadError> for Error {
+    fn from(err: PayloadError) -> Self {
+        Self::new_payload().with_cause(err)
+    }
+}
+
+/// A set of errors that can occur during dispatching HTTP requests.
+#[derive(Debug, Display, From)]
+#[non_exhaustive]
+pub enum DispatchError {
+    /// Service error.
+    #[display(fmt = "Service Error")]
+    Service(Response<BoxBody>),
+
+    /// Body streaming error.
+    #[display(fmt = "Body error: {}", _0)]
+    Body(Box<dyn StdError>),
+
+    /// Upgrade service error.
+    Upgrade,
+
+    /// An `io::Error` that occurred while trying to read or write to a network stream.
+    #[display(fmt = "IO error: {}", _0)]
+    Io(io::Error),
+
+    /// Request parse error.
+    #[display(fmt = "Request parse error: {}", _0)]
+    Parse(ParseError),
+
+    /// HTTP/2 error.
+    #[display(fmt = "{}", _0)]
+    #[cfg(feature = "http2")]
+    H2(h2::Error),
+
+    /// The first request did not complete within the specified timeout.
+    #[display(fmt = "The first request did not complete within the specified timeout")]
+    SlowRequestTimeout,
+
+    /// Disconnect timeout. Makes sense for ssl streams.
+    #[display(fmt = "Connection shutdown timeout")]
+    DisconnectTimeout,
+
+    /// Handler dropped payload before reading EOF.
+    #[display(fmt = "Handler dropped payload before reading EOF")]
+    HandlerDroppedPayload,
+
+    /// Internal error.
+    #[display(fmt = "Internal error")]
+    InternalError,
+}
+
+impl StdError for DispatchError {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
+        match self {
+            DispatchError::Service(_res) => None,
+            DispatchError::Body(err) => Some(&**err),
+            DispatchError::Io(err) => Some(err),
+            DispatchError::Parse(err) => Some(err),
+
+            #[cfg(feature = "http2")]
+            DispatchError::H2(err) => Some(err),
+
+            _ => None,
+        }
+    }
+}
+
+/// A set of error that can occur during parsing content type.
+#[derive(Debug, Display, Error)]
+#[cfg_attr(test, derive(PartialEq))]
+#[non_exhaustive]
+pub enum ContentTypeError {
+    /// Can not parse content type
+    #[display(fmt = "Can not parse content type")]
+    ParseError,
+
+    /// Unknown content encoding
+    #[display(fmt = "Unknown content encoding")]
+    UnknownEncoding,
+}
+
+#[cfg(test)]
+mod tests {
+    use std::io;
+
+    use http::{Error as HttpError, StatusCode};
+
+    use super::*;
+
+    #[test]
+    fn test_into_response() {
+        let resp: Response<BoxBody> = ParseError::Incomplete.into();
+        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
+
+        let err: HttpError = StatusCode::from_u16(10000).err().unwrap().into();
+        let resp: Response<BoxBody> = Error::new_http().with_cause(err).into();
+        assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
+    }
+
+    #[test]
+    fn test_as_response() {
+        let orig = io::Error::new(io::ErrorKind::Other, "other");
+        let err: Error = ParseError::Io(orig).into();
+        assert_eq!(
+            format!("{}", err),
+            "error parsing HTTP message: IO error: other"
+        );
+    }
+
+    #[test]
+    fn test_error_display() {
+        let orig = io::Error::new(io::ErrorKind::Other, "other");
+        let err = Error::new_io().with_cause(orig);
+        assert_eq!("connection error: other", err.to_string());
+    }
+
+    #[test]
+    fn test_error_http_response() {
+        let orig = io::Error::new(io::ErrorKind::Other, "other");
+        let err = Error::new_io().with_cause(orig);
+        let resp: Response<BoxBody> = err.into();
+        assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
+    }
+
+    #[test]
+    fn test_payload_error() {
+        let err: PayloadError = io::Error::new(io::ErrorKind::Other, "ParseError").into();
+        assert!(err.to_string().contains("ParseError"));
+
+        let err = PayloadError::Incomplete(None);
+        assert_eq!(
+            err.to_string(),
+            "A payload reached EOF, but is not complete. Inner error: None"
+        );
+    }
+
+    macro_rules! from {
+        ($from:expr => $error:pat) => {
+            match ParseError::from($from) {
+                err @ $error => {
+                    assert!(err.to_string().len() >= 5);
+                }
+                err => unreachable!("{:?}", err),
+            }
+        };
+    }
+
+    macro_rules! from_and_cause {
+        ($from:expr => $error:pat) => {
+            match ParseError::from($from) {
+                e @ $error => {
+                    let desc = format!("{}", e);
+                    assert_eq!(desc, format!("IO error: {}", $from));
+                }
+                _ => unreachable!("{:?}", $from),
+            }
+        };
+    }
+
+    #[test]
+    fn test_from() {
+        from_and_cause!(io::Error::new(io::ErrorKind::Other, "other") => ParseError::Io(..));
+        from!(httparse::Error::HeaderName => ParseError::Header);
+        from!(httparse::Error::HeaderName => ParseError::Header);
+        from!(httparse::Error::HeaderValue => ParseError::Header);
+        from!(httparse::Error::NewLine => ParseError::Header);
+        from!(httparse::Error::Status => ParseError::Status);
+        from!(httparse::Error::Token => ParseError::Header);
+        from!(httparse::Error::TooManyHeaders => ParseError::TooLarge);
+        from!(httparse::Error::Version => ParseError::Version);
+    }
+}

actix-http/src/extensions.rs

@@ -0,0 +1,280 @@
+use std::{
+    any::{Any, TypeId},
+    fmt,
+};
+
+use ahash::AHashMap;
+
+/// A type map for request extensions.
+///
+/// All entries into this map must be owned types (or static references).
+#[derive(Default)]
+pub struct Extensions {
+    /// Use AHasher with a std HashMap with for faster lookups on the small `TypeId` keys.
+    map: AHashMap<TypeId, Box<dyn Any>>,
+}
+
+impl Extensions {
+    /// Creates an empty `Extensions`.
+    #[inline]
+    pub fn new() -> Extensions {
+        Extensions {
+            map: AHashMap::new(),
+        }
+    }
+
+    /// Insert an item into the map.
+    ///
+    /// If an item of this type was already stored, it will be replaced and returned.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    /// assert_eq!(map.insert(""), None);
+    /// assert_eq!(map.insert(1u32), None);
+    /// assert_eq!(map.insert(2u32), Some(1u32));
+    /// assert_eq!(*map.get::<u32>().unwrap(), 2u32);
+    /// ```
+    pub fn insert<T: 'static>(&mut self, val: T) -> Option<T> {
+        self.map
+            .insert(TypeId::of::<T>(), Box::new(val))
+            .and_then(downcast_owned)
+    }
+
+    /// Check if map contains an item of a given type.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    /// assert!(!map.contains::<u32>());
+    ///
+    /// assert_eq!(map.insert(1u32), None);
+    /// assert!(map.contains::<u32>());
+    /// ```
+    pub fn contains<T: 'static>(&self) -> bool {
+        self.map.contains_key(&TypeId::of::<T>())
+    }
+
+    /// Get a reference to an item of a given type.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    /// map.insert(1u32);
+    /// assert_eq!(map.get::<u32>(), Some(&1u32));
+    /// ```
+    pub fn get<T: 'static>(&self) -> Option<&T> {
+        self.map
+            .get(&TypeId::of::<T>())
+            .and_then(|boxed| boxed.downcast_ref())
+    }
+
+    /// Get a mutable reference to an item of a given type.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    /// map.insert(1u32);
+    /// assert_eq!(map.get_mut::<u32>(), Some(&mut 1u32));
+    /// ```
+    pub fn get_mut<T: 'static>(&mut self) -> Option<&mut T> {
+        self.map
+            .get_mut(&TypeId::of::<T>())
+            .and_then(|boxed| boxed.downcast_mut())
+    }
+
+    /// Remove an item from the map of a given type.
+    ///
+    /// If an item of this type was already stored, it will be returned.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    ///
+    /// map.insert(1u32);
+    /// assert_eq!(map.get::<u32>(), Some(&1u32));
+    ///
+    /// assert_eq!(map.remove::<u32>(), Some(1u32));
+    /// assert!(!map.contains::<u32>());
+    /// ```
+    pub fn remove<T: 'static>(&mut self) -> Option<T> {
+        self.map.remove(&TypeId::of::<T>()).and_then(downcast_owned)
+    }
+
+    /// Clear the `Extensions` of all inserted extensions.
+    ///
+    /// ```
+    /// # use actix_http::Extensions;
+    /// let mut map = Extensions::new();
+    ///
+    /// map.insert(1u32);
+    /// assert!(map.contains::<u32>());
+    ///
+    /// map.clear();
+    /// assert!(!map.contains::<u32>());
+    /// ```
+    #[inline]
+    pub fn clear(&mut self) {
+        self.map.clear();
+    }
+
+    /// Extends self with the items from another `Extensions`.
+    pub fn extend(&mut self, other: Extensions) {
+        self.map.extend(other.map);
+    }
+}
+
+impl fmt::Debug for Extensions {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("Extensions").finish()
+    }
+}
+
+fn downcast_owned<T: 'static>(boxed: Box<dyn Any>) -> Option<T> {
+    boxed.downcast().ok().map(|boxed| *boxed)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_remove() {
+        let mut map = Extensions::new();
+
+        map.insert::<i8>(123);
+        assert!(map.get::<i8>().is_some());
+
+        map.remove::<i8>();
+        assert!(map.get::<i8>().is_none());
+    }
+
+    #[test]
+    fn test_clear() {
+        let mut map = Extensions::new();
+
+        map.insert::<i8>(8);
+        map.insert::<i16>(16);
+        map.insert::<i32>(32);
+
+        assert!(map.contains::<i8>());
+        assert!(map.contains::<i16>());
+        assert!(map.contains::<i32>());
+
+        map.clear();
+
+        assert!(!map.contains::<i8>());
+        assert!(!map.contains::<i16>());
+        assert!(!map.contains::<i32>());
+
+        map.insert::<i8>(10);
+        assert_eq!(*map.get::<i8>().unwrap(), 10);
+    }
+
+    #[test]
+    fn test_integers() {
+        static A: u32 = 8;
+
+        let mut map = Extensions::new();
+
+        map.insert::<i8>(8);
+        map.insert::<i16>(16);
+        map.insert::<i32>(32);
+        map.insert::<i64>(64);
+        map.insert::<i128>(128);
+        map.insert::<u8>(8);
+        map.insert::<u16>(16);
+        map.insert::<u32>(32);
+        map.insert::<u64>(64);
+        map.insert::<u128>(128);
+        map.insert::<&'static u32>(&A);
+        assert!(map.get::<i8>().is_some());
+        assert!(map.get::<i16>().is_some());
+        assert!(map.get::<i32>().is_some());
+        assert!(map.get::<i64>().is_some());
+        assert!(map.get::<i128>().is_some());
+        assert!(map.get::<u8>().is_some());
+        assert!(map.get::<u16>().is_some());
+        assert!(map.get::<u32>().is_some());
+        assert!(map.get::<u64>().is_some());
+        assert!(map.get::<u128>().is_some());
+        assert!(map.get::<&'static u32>().is_some());
+    }
+
+    #[test]
+    fn test_composition() {
+        struct Magi<T>(pub T);
+
+        struct Madoka {
+            pub god: bool,
+        }
+
+        struct Homura {
+            pub attempts: usize,
+        }
+
+        struct Mami {
+            pub guns: usize,
+        }
+
+        let mut map = Extensions::new();
+
+        map.insert(Magi(Madoka { god: false }));
+        map.insert(Magi(Homura { attempts: 0 }));
+        map.insert(Magi(Mami { guns: 999 }));
+
+        assert!(!map.get::<Magi<Madoka>>().unwrap().0.god);
+        assert_eq!(0, map.get::<Magi<Homura>>().unwrap().0.attempts);
+        assert_eq!(999, map.get::<Magi<Mami>>().unwrap().0.guns);
+    }
+
+    #[test]
+    fn test_extensions() {
+        #[derive(Debug, PartialEq)]
+        struct MyType(i32);
+
+        let mut extensions = Extensions::new();
+
+        extensions.insert(5i32);
+        extensions.insert(MyType(10));
+
+        assert_eq!(extensions.get(), Some(&5i32));
+        assert_eq!(extensions.get_mut(), Some(&mut 5i32));
+
+        assert_eq!(extensions.remove::<i32>(), Some(5i32));
+        assert!(extensions.get::<i32>().is_none());
+
+        assert_eq!(extensions.get::<bool>(), None);
+        assert_eq!(extensions.get(), Some(&MyType(10)));
+    }
+
+    #[test]
+    fn test_extend() {
+        #[derive(Debug, PartialEq)]
+        struct MyType(i32);
+
+        let mut extensions = Extensions::new();
+
+        extensions.insert(5i32);
+        extensions.insert(MyType(10));
+
+        let mut other = Extensions::new();
+
+        other.insert(15i32);
+        other.insert(20u8);
+
+        extensions.extend(other);
+
+        assert_eq!(extensions.get(), Some(&15i32));
+        assert_eq!(extensions.get_mut(), Some(&mut 15i32));
+
+        assert_eq!(extensions.remove::<i32>(), Some(15i32));
+        assert!(extensions.get::<i32>().is_none());
+
+        assert_eq!(extensions.get::<bool>(), None);
+        assert_eq!(extensions.get(), Some(&MyType(10)));
+
+        assert_eq!(extensions.get(), Some(&20u8));
+        assert_eq!(extensions.get_mut(), Some(&mut 20u8));
+    }
+}

actix-http/src/h1/chunked.rs

@@ -0,0 +1,426 @@
+use std::{io, task::Poll};
+
+use bytes::{Buf as _, Bytes, BytesMut};
+
+macro_rules! byte (
+    ($rdr:ident) => ({
+        if $rdr.len() > 0 {
+            let b = $rdr[0];
+            $rdr.advance(1);
+            b
+        } else {
+            return Poll::Pending
+        }
+    })
+);
+
+#[derive(Debug, PartialEq, Clone)]
+pub(super) enum ChunkedState {
+    Size,
+    SizeLws,
+    Extension,
+    SizeLf,
+    Body,
+    BodyCr,
+    BodyLf,
+    EndCr,
+    EndLf,
+    End,
+}
+
+impl ChunkedState {
+    pub(super) fn step(
+        &self,
+        body: &mut BytesMut,
+        size: &mut u64,
+        buf: &mut Option<Bytes>,
+    ) -> Poll<Result<ChunkedState, io::Error>> {
+        use self::ChunkedState::*;
+        match *self {
+            Size => ChunkedState::read_size(body, size),
+            SizeLws => ChunkedState::read_size_lws(body),
+            Extension => ChunkedState::read_extension(body),
+            SizeLf => ChunkedState::read_size_lf(body, *size),
+            Body => ChunkedState::read_body(body, size, buf),
+            BodyCr => ChunkedState::read_body_cr(body),
+            BodyLf => ChunkedState::read_body_lf(body),
+            EndCr => ChunkedState::read_end_cr(body),
+            EndLf => ChunkedState::read_end_lf(body),
+            End => Poll::Ready(Ok(ChunkedState::End)),
+        }
+    }
+
+    fn read_size(rdr: &mut BytesMut, size: &mut u64) -> Poll<Result<ChunkedState, io::Error>> {
+        let radix = 16;
+
+        let rem = match byte!(rdr) {
+            b @ b'0'..=b'9' => b - b'0',
+            b @ b'a'..=b'f' => b + 10 - b'a',
+            b @ b'A'..=b'F' => b + 10 - b'A',
+            b'\t' | b' ' => return Poll::Ready(Ok(ChunkedState::SizeLws)),
+            b';' => return Poll::Ready(Ok(ChunkedState::Extension)),
+            b'\r' => return Poll::Ready(Ok(ChunkedState::SizeLf)),
+            _ => {
+                return Poll::Ready(Err(io::Error::new(
+                    io::ErrorKind::InvalidInput,
+                    "Invalid chunk size line: Invalid Size",
+                )));
+            }
+        };
+
+        match size.checked_mul(radix) {
+            Some(n) => {
+                *size = n as u64;
+                *size += rem as u64;
+
+                Poll::Ready(Ok(ChunkedState::Size))
+            }
+            None => {
+                log::debug!("chunk size would overflow u64");
+                Poll::Ready(Err(io::Error::new(
+                    io::ErrorKind::InvalidInput,
+                    "Invalid chunk size line: Size is too big",
+                )))
+            }
+        }
+    }
+
+    fn read_size_lws(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            // LWS can follow the chunk size, but no more digits can come
+            b'\t' | b' ' => Poll::Ready(Ok(ChunkedState::SizeLws)),
+            b';' => Poll::Ready(Ok(ChunkedState::Extension)),
+            b'\r' => Poll::Ready(Ok(ChunkedState::SizeLf)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk size linear white space",
+            ))),
+        }
+    }
+    fn read_extension(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\r' => Poll::Ready(Ok(ChunkedState::SizeLf)),
+            // strictly 0x20 (space) should be disallowed but we don't parse quoted strings here
+            0x00..=0x08 | 0x0a..=0x1f | 0x7f => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid character in chunk extension",
+            ))),
+            _ => Poll::Ready(Ok(ChunkedState::Extension)), // no supported extensions
+        }
+    }
+    fn read_size_lf(rdr: &mut BytesMut, size: u64) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\n' if size > 0 => Poll::Ready(Ok(ChunkedState::Body)),
+            b'\n' if size == 0 => Poll::Ready(Ok(ChunkedState::EndCr)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk size LF",
+            ))),
+        }
+    }
+
+    fn read_body(
+        rdr: &mut BytesMut,
+        rem: &mut u64,
+        buf: &mut Option<Bytes>,
+    ) -> Poll<Result<ChunkedState, io::Error>> {
+        log::trace!("Chunked read, remaining={:?}", rem);
+
+        let len = rdr.len() as u64;
+        if len == 0 {
+            Poll::Ready(Ok(ChunkedState::Body))
+        } else {
+            let slice;
+            if *rem > len {
+                slice = rdr.split().freeze();
+                *rem -= len;
+            } else {
+                slice = rdr.split_to(*rem as usize).freeze();
+                *rem = 0;
+            }
+            *buf = Some(slice);
+            if *rem > 0 {
+                Poll::Ready(Ok(ChunkedState::Body))
+            } else {
+                Poll::Ready(Ok(ChunkedState::BodyCr))
+            }
+        }
+    }
+
+    fn read_body_cr(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\r' => Poll::Ready(Ok(ChunkedState::BodyLf)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk body CR",
+            ))),
+        }
+    }
+    fn read_body_lf(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\n' => Poll::Ready(Ok(ChunkedState::Size)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk body LF",
+            ))),
+        }
+    }
+    fn read_end_cr(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\r' => Poll::Ready(Ok(ChunkedState::EndLf)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk end CR",
+            ))),
+        }
+    }
+    fn read_end_lf(rdr: &mut BytesMut) -> Poll<Result<ChunkedState, io::Error>> {
+        match byte!(rdr) {
+            b'\n' => Poll::Ready(Ok(ChunkedState::End)),
+            _ => Poll::Ready(Err(io::Error::new(
+                io::ErrorKind::InvalidInput,
+                "Invalid chunk end LF",
+            ))),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use actix_codec::Decoder as _;
+    use bytes::{Bytes, BytesMut};
+    use http::Method;
+
+    use crate::{
+        error::ParseError,
+        h1::decoder::{MessageDecoder, PayloadItem},
+        HttpMessage as _, Request,
+    };
+
+    macro_rules! parse_ready {
+        ($e:expr) => {{
+            match MessageDecoder::<Request>::default().decode($e) {
+                Ok(Some((msg, _))) => msg,
+                Ok(_) => unreachable!("Eof during parsing http request"),
+                Err(err) => unreachable!("Error during parsing http request: {:?}", err),
+            }
+        }};
+    }
+
+    macro_rules! expect_parse_err {
+        ($e:expr) => {{
+            match MessageDecoder::<Request>::default().decode($e) {
+                Err(err) => match err {
+                    ParseError::Io(_) => unreachable!("Parse error expected"),
+                    _ => {}
+                },
+                _ => unreachable!("Error expected"),
+            }
+        }};
+    }
+
+    #[test]
+    fn test_parse_chunked_payload_chunk_extension() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+            transfer-encoding: chunked\r\n\
+            \r\n",
+        );
+
+        let mut reader = MessageDecoder::<Request>::default();
+        let (msg, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+        assert!(msg.chunked().unwrap());
+
+        buf.extend(b"4;test\r\ndata\r\n4\r\nline\r\n0\r\n\r\n"); // test: test\r\n\r\n")
+        let chunk = pl.decode(&mut buf).unwrap().unwrap().chunk();
+        assert_eq!(chunk, Bytes::from_static(b"data"));
+        let chunk = pl.decode(&mut buf).unwrap().unwrap().chunk();
+        assert_eq!(chunk, Bytes::from_static(b"line"));
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert!(msg.eof());
+    }
+
+    #[test]
+    fn test_request_chunked() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chunked\r\n\r\n",
+        );
+        let req = parse_ready!(&mut buf);
+
+        if let Ok(val) = req.chunked() {
+            assert!(val);
+        } else {
+            unreachable!("Error");
+        }
+
+        // intentional typo in "chunked"
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chnked\r\n\r\n",
+        );
+        expect_parse_err!(&mut buf);
+    }
+
+    #[test]
+    fn test_http_request_chunked_payload() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chunked\r\n\r\n",
+        );
+        let mut reader = MessageDecoder::<Request>::default();
+        let (req, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+        assert!(req.chunked().unwrap());
+
+        buf.extend(b"4\r\ndata\r\n4\r\nline\r\n0\r\n\r\n");
+        assert_eq!(
+            pl.decode(&mut buf).unwrap().unwrap().chunk().as_ref(),
+            b"data"
+        );
+        assert_eq!(
+            pl.decode(&mut buf).unwrap().unwrap().chunk().as_ref(),
+            b"line"
+        );
+        assert!(pl.decode(&mut buf).unwrap().unwrap().eof());
+    }
+
+    #[test]
+    fn test_http_request_chunked_payload_and_next_message() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chunked\r\n\r\n",
+        );
+        let mut reader = MessageDecoder::<Request>::default();
+        let (req, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+        assert!(req.chunked().unwrap());
+
+        buf.extend(
+            b"4\r\ndata\r\n4\r\nline\r\n0\r\n\r\n\
+              POST /test2 HTTP/1.1\r\n\
+              transfer-encoding: chunked\r\n\r\n"
+                .iter(),
+        );
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"data");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"line");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert!(msg.eof());
+
+        let (req, _) = reader.decode(&mut buf).unwrap().unwrap();
+        assert!(req.chunked().unwrap());
+        assert_eq!(*req.method(), Method::POST);
+        assert!(req.chunked().unwrap());
+    }
+
+    #[test]
+    fn test_http_request_chunked_payload_chunks() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chunked\r\n\r\n",
+        );
+
+        let mut reader = MessageDecoder::<Request>::default();
+        let (req, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+        assert!(req.chunked().unwrap());
+
+        buf.extend(b"4\r\n1111\r\n");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"1111");
+
+        buf.extend(b"4\r\ndata\r");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"data");
+
+        buf.extend(b"\n4");
+        assert!(pl.decode(&mut buf).unwrap().is_none());
+
+        buf.extend(b"\r");
+        assert!(pl.decode(&mut buf).unwrap().is_none());
+        buf.extend(b"\n");
+        assert!(pl.decode(&mut buf).unwrap().is_none());
+
+        buf.extend(b"li");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"li");
+
+        //trailers
+        //buf.feed_data("test: test\r\n");
+        //not_ready!(reader.parse(&mut buf, &mut readbuf));
+
+        buf.extend(b"ne\r\n0\r\n");
+        let msg = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"ne");
+        assert!(pl.decode(&mut buf).unwrap().is_none());
+
+        buf.extend(b"\r\n");
+        assert!(pl.decode(&mut buf).unwrap().unwrap().eof());
+    }
+
+    #[test]
+    fn chunk_extension_quoted() {
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+            Host: localhost:8080\r\n\
+            Transfer-Encoding: chunked\r\n\
+            \r\n\
+            2;hello=b;one=\"1 2 3\"\r\n\
+            xx",
+        );
+
+        let mut reader = MessageDecoder::<Request>::default();
+        let (_msg, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+
+        let chunk = pl.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(chunk, PayloadItem::Chunk(Bytes::from_static(b"xx")));
+    }
+
+    #[test]
+    fn hrs_chunk_extension_invalid() {
+        let mut buf = BytesMut::from(
+            "GET / HTTP/1.1\r\n\
+            Host: localhost:8080\r\n\
+            Transfer-Encoding: chunked\r\n\
+            \r\n\
+            2;x\nx\r\n\
+            4c\r\n\
+            0\r\n",
+        );
+
+        let mut reader = MessageDecoder::<Request>::default();
+        let (_msg, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+
+        let err = pl.decode(&mut buf).unwrap_err();
+        assert!(err
+            .to_string()
+            .contains("Invalid character in chunk extension"));
+    }
+
+    #[test]
+    fn hrs_chunk_size_overflow() {
+        let mut buf = BytesMut::from(
+            "GET / HTTP/1.1\r\n\
+            Host: example.com\r\n\
+            Transfer-Encoding: chunked\r\n\
+            \r\n\
+            f0000000000000003\r\n\
+            abc\r\n\
+            0\r\n",
+        );
+
+        let mut reader = MessageDecoder::<Request>::default();
+        let (_msg, pl) = reader.decode(&mut buf).unwrap().unwrap();
+        let mut pl = pl.unwrap();
+
+        let err = pl.decode(&mut buf).unwrap_err();
+        assert!(err
+            .to_string()
+            .contains("Invalid chunk size line: Size is too big"));
+    }
+}

actix-http/src/h1/client.rs

@@ -0,0 +1,239 @@
+use std::{fmt, io};
+
+use actix_codec::{Decoder, Encoder};
+use bitflags::bitflags;
+use bytes::{Bytes, BytesMut};
+use http::{Method, Version};
+
+use super::{
+    decoder::{self, PayloadDecoder, PayloadItem, PayloadType},
+    encoder, reserve_readbuf, Message, MessageType,
+};
+use crate::{
+    body::BodySize,
+    error::{ParseError, PayloadError},
+    ConnectionType, RequestHeadType, ResponseHead, ServiceConfig,
+};
+
+bitflags! {
+    struct Flags: u8 {
+        const HEAD               = 0b0000_0001;
+        const KEEP_ALIVE_ENABLED = 0b0000_1000;
+        const STREAM             = 0b0001_0000;
+    }
+}
+
+/// HTTP/1 Codec
+pub struct ClientCodec {
+    inner: ClientCodecInner,
+}
+
+/// HTTP/1 Payload Codec
+pub struct ClientPayloadCodec {
+    inner: ClientCodecInner,
+}
+
+struct ClientCodecInner {
+    config: ServiceConfig,
+    decoder: decoder::MessageDecoder<ResponseHead>,
+    payload: Option<PayloadDecoder>,
+    version: Version,
+    conn_type: ConnectionType,
+
+    // encoder part
+    flags: Flags,
+    encoder: encoder::MessageEncoder<RequestHeadType>,
+}
+
+impl Default for ClientCodec {
+    fn default() -> Self {
+        ClientCodec::new(ServiceConfig::default())
+    }
+}
+
+impl fmt::Debug for ClientCodec {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("h1::ClientCodec")
+            .field("flags", &self.inner.flags)
+            .finish_non_exhaustive()
+    }
+}
+
+impl ClientCodec {
+    /// Create HTTP/1 codec.
+    ///
+    /// `keepalive_enabled` how response `connection` header get generated.
+    pub fn new(config: ServiceConfig) -> Self {
+        let flags = if config.keep_alive().enabled() {
+            Flags::KEEP_ALIVE_ENABLED
+        } else {
+            Flags::empty()
+        };
+
+        ClientCodec {
+            inner: ClientCodecInner {
+                config,
+                decoder: decoder::MessageDecoder::default(),
+                payload: None,
+                version: Version::HTTP_11,
+                conn_type: ConnectionType::Close,
+
+                flags,
+                encoder: encoder::MessageEncoder::default(),
+            },
+        }
+    }
+
+    /// Check if request is upgrade
+    pub fn upgrade(&self) -> bool {
+        self.inner.conn_type == ConnectionType::Upgrade
+    }
+
+    /// Check if last response is keep-alive
+    pub fn keep_alive(&self) -> bool {
+        self.inner.conn_type == ConnectionType::KeepAlive
+    }
+
+    /// Check last request's message type
+    pub fn message_type(&self) -> MessageType {
+        if self.inner.flags.contains(Flags::STREAM) {
+            MessageType::Stream
+        } else if self.inner.payload.is_none() {
+            MessageType::None
+        } else {
+            MessageType::Payload
+        }
+    }
+
+    /// Convert message codec to a payload codec
+    pub fn into_payload_codec(self) -> ClientPayloadCodec {
+        ClientPayloadCodec { inner: self.inner }
+    }
+}
+
+impl ClientPayloadCodec {
+    /// Check if last response is keep-alive
+    pub fn keep_alive(&self) -> bool {
+        self.inner.conn_type == ConnectionType::KeepAlive
+    }
+
+    /// Transform payload codec to a message codec
+    pub fn into_message_codec(self) -> ClientCodec {
+        ClientCodec { inner: self.inner }
+    }
+}
+
+impl Decoder for ClientCodec {
+    type Item = ResponseHead;
+    type Error = ParseError;
+
+    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        debug_assert!(
+            self.inner.payload.is_none(),
+            "Payload decoder should not be set"
+        );
+
+        if let Some((req, payload)) = self.inner.decoder.decode(src)? {
+            if let Some(conn_type) = req.conn_type() {
+                // do not use peer's keep-alive
+                self.inner.conn_type = if conn_type == ConnectionType::KeepAlive {
+                    self.inner.conn_type
+                } else {
+                    conn_type
+                };
+            }
+
+            if !self.inner.flags.contains(Flags::HEAD) {
+                match payload {
+                    PayloadType::None => self.inner.payload = None,
+                    PayloadType::Payload(pl) => self.inner.payload = Some(pl),
+                    PayloadType::Stream(pl) => {
+                        self.inner.payload = Some(pl);
+                        self.inner.flags.insert(Flags::STREAM);
+                    }
+                }
+            } else {
+                self.inner.payload = None;
+            }
+            reserve_readbuf(src);
+            Ok(Some(req))
+        } else {
+            Ok(None)
+        }
+    }
+}
+
+impl Decoder for ClientPayloadCodec {
+    type Item = Option<Bytes>;
+    type Error = PayloadError;
+
+    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        debug_assert!(
+            self.inner.payload.is_some(),
+            "Payload decoder is not specified"
+        );
+
+        Ok(match self.inner.payload.as_mut().unwrap().decode(src)? {
+            Some(PayloadItem::Chunk(chunk)) => {
+                reserve_readbuf(src);
+                Some(Some(chunk))
+            }
+            Some(PayloadItem::Eof) => {
+                self.inner.payload.take();
+                Some(None)
+            }
+            None => None,
+        })
+    }
+}
+
+impl Encoder<Message<(RequestHeadType, BodySize)>> for ClientCodec {
+    type Error = io::Error;
+
+    fn encode(
+        &mut self,
+        item: Message<(RequestHeadType, BodySize)>,
+        dst: &mut BytesMut,
+    ) -> Result<(), Self::Error> {
+        match item {
+            Message::Item((mut head, length)) => {
+                let inner = &mut self.inner;
+                inner.version = head.as_ref().version;
+                inner
+                    .flags
+                    .set(Flags::HEAD, head.as_ref().method == Method::HEAD);
+
+                // connection status
+                inner.conn_type = match head.as_ref().connection_type() {
+                    ConnectionType::KeepAlive => {
+                        if inner.flags.contains(Flags::KEEP_ALIVE_ENABLED) {
+                            ConnectionType::KeepAlive
+                        } else {
+                            ConnectionType::Close
+                        }
+                    }
+                    ConnectionType::Upgrade => ConnectionType::Upgrade,
+                    ConnectionType::Close => ConnectionType::Close,
+                };
+
+                inner.encoder.encode(
+                    dst,
+                    &mut head,
+                    false,
+                    false,
+                    inner.version,
+                    length,
+                    inner.conn_type,
+                    &inner.config,
+                )?;
+            }
+            Message::Chunk(Some(bytes)) => {
+                self.inner.encoder.encode_chunk(bytes.as_ref(), dst)?;
+            }
+            Message::Chunk(None) => {
+                self.inner.encoder.encode_eof(dst)?;
+            }
+        }
+        Ok(())
+    }
+}

actix-http/src/h1/codec.rs

@@ -0,0 +1,244 @@
+use std::{fmt, io};
+
+use actix_codec::{Decoder, Encoder};
+use bitflags::bitflags;
+use bytes::BytesMut;
+use http::{Method, Version};
+
+use super::{
+    decoder::{self, PayloadDecoder, PayloadItem, PayloadType},
+    encoder, Message, MessageType,
+};
+use crate::{
+    body::BodySize, error::ParseError, ConnectionType, Request, Response, ServiceConfig,
+};
+
+bitflags! {
+    struct Flags: u8 {
+        const HEAD               = 0b0000_0001;
+        const KEEP_ALIVE_ENABLED = 0b0000_0010;
+        const STREAM             = 0b0000_0100;
+    }
+}
+
+/// HTTP/1 Codec
+pub struct Codec {
+    config: ServiceConfig,
+    decoder: decoder::MessageDecoder<Request>,
+    payload: Option<PayloadDecoder>,
+    version: Version,
+    conn_type: ConnectionType,
+
+    // encoder part
+    flags: Flags,
+    encoder: encoder::MessageEncoder<Response<()>>,
+}
+
+impl Default for Codec {
+    fn default() -> Self {
+        Codec::new(ServiceConfig::default())
+    }
+}
+
+impl fmt::Debug for Codec {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("h1::Codec")
+            .field("flags", &self.flags)
+            .finish_non_exhaustive()
+    }
+}
+
+impl Codec {
+    /// Create HTTP/1 codec.
+    ///
+    /// `keepalive_enabled` how response `connection` header get generated.
+    pub fn new(config: ServiceConfig) -> Self {
+        let flags = if config.keep_alive().enabled() {
+            Flags::KEEP_ALIVE_ENABLED
+        } else {
+            Flags::empty()
+        };
+
+        Codec {
+            config,
+            flags,
+            decoder: decoder::MessageDecoder::default(),
+            payload: None,
+            version: Version::HTTP_11,
+            conn_type: ConnectionType::Close,
+            encoder: encoder::MessageEncoder::default(),
+        }
+    }
+
+    /// Check if request is upgrade.
+    #[inline]
+    pub fn upgrade(&self) -> bool {
+        self.conn_type == ConnectionType::Upgrade
+    }
+
+    /// Check if last response is keep-alive.
+    #[inline]
+    pub fn keep_alive(&self) -> bool {
+        self.conn_type == ConnectionType::KeepAlive
+    }
+
+    /// Check if keep-alive enabled on server level.
+    #[inline]
+    pub fn keep_alive_enabled(&self) -> bool {
+        self.flags.contains(Flags::KEEP_ALIVE_ENABLED)
+    }
+
+    /// Check last request's message type.
+    #[inline]
+    pub fn message_type(&self) -> MessageType {
+        if self.flags.contains(Flags::STREAM) {
+            MessageType::Stream
+        } else if self.payload.is_none() {
+            MessageType::None
+        } else {
+            MessageType::Payload
+        }
+    }
+
+    #[inline]
+    pub fn config(&self) -> &ServiceConfig {
+        &self.config
+    }
+}
+
+impl Decoder for Codec {
+    type Item = Message<Request>;
+    type Error = ParseError;
+
+    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
+        if let Some(ref mut payload) = self.payload {
+            Ok(match payload.decode(src)? {
+                Some(PayloadItem::Chunk(chunk)) => Some(Message::Chunk(Some(chunk))),
+                Some(PayloadItem::Eof) => {
+                    self.payload.take();
+                    Some(Message::Chunk(None))
+                }
+                None => None,
+            })
+        } else if let Some((req, payload)) = self.decoder.decode(src)? {
+            let head = req.head();
+            self.flags.set(Flags::HEAD, head.method == Method::HEAD);
+            self.version = head.version;
+            self.conn_type = head.connection_type();
+
+            if self.conn_type == ConnectionType::KeepAlive
+                && !self.flags.contains(Flags::KEEP_ALIVE_ENABLED)
+            {
+                self.conn_type = ConnectionType::Close
+            }
+
+            match payload {
+                PayloadType::None => self.payload = None,
+                PayloadType::Payload(pl) => self.payload = Some(pl),
+                PayloadType::Stream(pl) => {
+                    self.payload = Some(pl);
+                    self.flags.insert(Flags::STREAM);
+                }
+            }
+            Ok(Some(Message::Item(req)))
+        } else {
+            Ok(None)
+        }
+    }
+}
+
+impl Encoder<Message<(Response<()>, BodySize)>> for Codec {
+    type Error = io::Error;
+
+    fn encode(
+        &mut self,
+        item: Message<(Response<()>, BodySize)>,
+        dst: &mut BytesMut,
+    ) -> Result<(), Self::Error> {
+        match item {
+            Message::Item((mut res, length)) => {
+                // set response version
+                res.head_mut().version = self.version;
+
+                // connection status
+                self.conn_type = if let Some(ct) = res.head().conn_type() {
+                    if ct == ConnectionType::KeepAlive {
+                        self.conn_type
+                    } else {
+                        ct
+                    }
+                } else {
+                    self.conn_type
+                };
+
+                // encode message
+                self.encoder.encode(
+                    dst,
+                    &mut res,
+                    self.flags.contains(Flags::HEAD),
+                    self.flags.contains(Flags::STREAM),
+                    self.version,
+                    length,
+                    self.conn_type,
+                    &self.config,
+                )?;
+            }
+
+            Message::Chunk(Some(bytes)) => {
+                self.encoder.encode_chunk(bytes.as_ref(), dst)?;
+            }
+
+            Message::Chunk(None) => {
+                self.encoder.encode_eof(dst)?;
+            }
+        }
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use bytes::BytesMut;
+    use http::Method;
+
+    use super::*;
+    use crate::HttpMessage as _;
+
+    #[actix_rt::test]
+    async fn test_http_request_chunked_payload_and_next_message() {
+        let mut codec = Codec::default();
+
+        let mut buf = BytesMut::from(
+            "GET /test HTTP/1.1\r\n\
+             transfer-encoding: chunked\r\n\r\n",
+        );
+        let item = codec.decode(&mut buf).unwrap().unwrap();
+        let req = item.message();
+
+        assert_eq!(req.method(), Method::GET);
+        assert!(req.chunked().unwrap());
+
+        buf.extend(
+            b"4\r\ndata\r\n4\r\nline\r\n0\r\n\r\n\
+               POST /test2 HTTP/1.1\r\n\
+               transfer-encoding: chunked\r\n\r\n"
+                .iter(),
+        );
+
+        let msg = codec.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"data");
+
+        let msg = codec.decode(&mut buf).unwrap().unwrap();
+        assert_eq!(msg.chunk().as_ref(), b"line");
+
+        let msg = codec.decode(&mut buf).unwrap().unwrap();
+        assert!(msg.eof());
+
+        // decode next message
+        let item = codec.decode(&mut buf).unwrap().unwrap();
+        let req = item.message();
+        assert_eq!(*req.method(), Method::POST);
+        assert!(req.chunked().unwrap());
+    }
+}

actix-http/src/h1/dispatcher_tests.rs

@@ -0,0 +1,973 @@
+use std::{future::Future, str, task::Poll, time::Duration};
+
+use actix_rt::{pin, time::sleep};
+use actix_service::fn_service;
+use actix_utils::future::{ready, Ready};
+use bytes::Bytes;
+use futures_util::future::lazy;
+
+use actix_codec::Framed;
+use actix_service::Service;
+use bytes::{Buf, BytesMut};
+
+use super::dispatcher::{Dispatcher, DispatcherState, DispatcherStateProj, Flags};
+use crate::{
+    body::MessageBody,
+    config::ServiceConfig,
+    h1::{Codec, ExpectHandler, UpgradeHandler},
+    service::HttpFlow,
+    test::{TestBuffer, TestSeqBuffer},
+    Error, HttpMessage, KeepAlive, Method, OnConnectData, Request, Response, StatusCode,
+};
+
+fn find_slice(haystack: &[u8], needle: &[u8], from: usize) -> Option<usize> {
+    memchr::memmem::find(&haystack[from..], needle)
+}
+
+fn stabilize_date_header(payload: &mut [u8]) {
+    let mut from = 0;
+    while let Some(pos) = find_slice(payload, b"date", from) {
+        payload[(from + pos)..(from + pos + 35)]
+            .copy_from_slice(b"date: Thu, 01 Jan 1970 12:34:56 UTC");
+        from += 35;
+    }
+}
+
+fn ok_service() -> impl Service<Request, Response = Response<impl MessageBody>, Error = Error> {
+    status_service(StatusCode::OK)
+}
+
+fn status_service(
+    status: StatusCode,
+) -> impl Service<Request, Response = Response<impl MessageBody>, Error = Error> {
+    fn_service(move |_req: Request| ready(Ok::<_, Error>(Response::new(status))))
+}
+
+fn echo_path_service(
+) -> impl Service<Request, Response = Response<impl MessageBody>, Error = Error> {
+    fn_service(|req: Request| {
+        let path = req.path().as_bytes();
+        ready(Ok::<_, Error>(
+            Response::ok().set_body(Bytes::copy_from_slice(path)),
+        ))
+    })
+}
+
+fn drop_payload_service(
+) -> impl Service<Request, Response = Response<&'static str>, Error = Error> {
+    fn_service(|mut req: Request| async move {
+        let _ = req.take_payload();
+        Ok::<_, Error>(Response::with_body(StatusCode::OK, "payload dropped"))
+    })
+}
+
+fn echo_payload_service() -> impl Service<Request, Response = Response<Bytes>, Error = Error> {
+    fn_service(|mut req: Request| {
+        Box::pin(async move {
+            use futures_util::stream::StreamExt as _;
+
+            let mut pl = req.take_payload();
+            let mut body = BytesMut::new();
+            while let Some(chunk) = pl.next().await {
+                body.extend_from_slice(chunk.unwrap().chunk())
+            }
+
+            Ok::<_, Error>(Response::ok().set_body(body.freeze()))
+        })
+    })
+}
+
+#[actix_rt::test]
+async fn late_request() {
+    let mut buf = TestBuffer::empty();
+
+    let cfg = ServiceConfig::new(
+        KeepAlive::Disabled,
+        Duration::from_millis(100),
+        Duration::ZERO,
+        false,
+        None,
+    );
+    let services = HttpFlow::new(ok_service(), ExpectHandler, None);
+
+    let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+        buf.clone(),
+        services,
+        cfg,
+        None,
+        OnConnectData::default(),
+    );
+    pin!(h1);
+
+    lazy(|cx| {
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        match h1.as_mut().poll(cx) {
+            Poll::Ready(_) => panic!("first poll should not be ready"),
+            Poll::Pending => {}
+        }
+
+        // polls: initial
+        assert_eq!(h1.poll_count, 1);
+
+        buf.extend_read_buf("GET /abcd HTTP/1.1\r\nConnection: close\r\n\r\n");
+
+        match h1.as_mut().poll(cx) {
+            Poll::Pending => panic!("second poll should not be pending"),
+            Poll::Ready(res) => assert!(res.is_ok()),
+        }
+
+        // polls: initial pending => handle req => shutdown
+        assert_eq!(h1.poll_count, 3);
+
+        let mut res = buf.take_write_buf().to_vec();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 0\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn oneshot_connection() {
+    let buf = TestBuffer::new("GET /abcd HTTP/1.1\r\n\r\n");
+
+    let cfg = ServiceConfig::new(
+        KeepAlive::Disabled,
+        Duration::from_millis(100),
+        Duration::ZERO,
+        false,
+        None,
+    );
+    let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+    let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+        buf.clone(),
+        services,
+        cfg,
+        None,
+        OnConnectData::default(),
+    );
+    pin!(h1);
+
+    lazy(|cx| {
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        match h1.as_mut().poll(cx) {
+            Poll::Pending => panic!("first poll should not be pending"),
+            Poll::Ready(res) => assert!(res.is_ok()),
+        }
+
+        // polls: initial => shutdown
+        assert_eq!(h1.poll_count, 2);
+
+        let mut res = buf.take_write_buf().to_vec();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = http_msg(
+            r"
+            HTTP/1.1 200 OK
+            content-length: 5
+            connection: close
+            date: Thu, 01 Jan 1970 12:34:56 UTC
+
+            /abcd
+            ",
+        );
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(&exp)
+        );
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn keep_alive_timeout() {
+    let buf = TestBuffer::new("GET /abcd HTTP/1.1\r\n\r\n");
+
+    let cfg = ServiceConfig::new(
+        KeepAlive::Timeout(Duration::from_millis(200)),
+        Duration::from_millis(100),
+        Duration::ZERO,
+        false,
+        None,
+    );
+    let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+    let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+        buf.clone(),
+        services,
+        cfg,
+        None,
+        OnConnectData::default(),
+    );
+    pin!(h1);
+
+    lazy(|cx| {
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        assert!(
+            h1.as_mut().poll(cx).is_pending(),
+            "keep-alive should prevent poll from resolving"
+        );
+
+        // polls: initial
+        assert_eq!(h1.poll_count, 1);
+
+        let mut res = buf.take_write_buf().to_vec();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 5\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /abcd\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+
+    // sleep slightly longer than keep-alive timeout
+    sleep(Duration::from_millis(250)).await;
+
+    lazy(|cx| {
+        assert!(
+            h1.as_mut().poll(cx).is_ready(),
+            "keep-alive should have resolved",
+        );
+
+        // polls: initial => keep-alive wake-up shutdown
+        assert_eq!(h1.poll_count, 2);
+
+        if let DispatcherStateProj::Normal { inner } = h1.project().inner.project() {
+            // connection closed
+            assert!(inner.flags.contains(Flags::SHUTDOWN));
+            assert!(inner.flags.contains(Flags::WRITE_DISCONNECT));
+            // and nothing added to write buffer
+            assert!(buf.write_buf_slice().is_empty());
+        }
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn keep_alive_follow_up_req() {
+    let mut buf = TestBuffer::new("GET /abcd HTTP/1.1\r\n\r\n");
+
+    let cfg = ServiceConfig::new(
+        KeepAlive::Timeout(Duration::from_millis(500)),
+        Duration::from_millis(100),
+        Duration::ZERO,
+        false,
+        None,
+    );
+    let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+    let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+        buf.clone(),
+        services,
+        cfg,
+        None,
+        OnConnectData::default(),
+    );
+    pin!(h1);
+
+    lazy(|cx| {
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        assert!(
+            h1.as_mut().poll(cx).is_pending(),
+            "keep-alive should prevent poll from resolving"
+        );
+
+        // polls: initial
+        assert_eq!(h1.poll_count, 1);
+
+        let mut res = buf.take_write_buf().to_vec();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 5\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /abcd\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+
+    // sleep for less than KA timeout
+    sleep(Duration::from_millis(100)).await;
+
+    lazy(|cx| {
+        assert!(
+            h1.as_mut().poll(cx).is_pending(),
+            "keep-alive should not have resolved dispatcher yet",
+        );
+
+        // polls: initial => manual
+        assert_eq!(h1.poll_count, 2);
+
+        if let DispatcherStateProj::Normal { inner } = h1.as_mut().project().inner.project() {
+            // connection not closed
+            assert!(!inner.flags.contains(Flags::SHUTDOWN));
+            assert!(!inner.flags.contains(Flags::WRITE_DISCONNECT));
+            // and nothing added to write buffer
+            assert!(buf.write_buf_slice().is_empty());
+        }
+    })
+    .await;
+
+    lazy(|cx| {
+        buf.extend_read_buf(
+            "\
+            GET /efg HTTP/1.1\r\n\
+            Connection: close\r\n\
+            \r\n\r\n",
+        );
+
+        assert!(
+            h1.as_mut().poll(cx).is_ready(),
+            "connection close header should override keep-alive setting",
+        );
+
+        // polls: initial => manual => follow-up req => shutdown
+        assert_eq!(h1.poll_count, 4);
+
+        if let DispatcherStateProj::Normal { inner } = h1.as_mut().project().inner.project() {
+            // connection closed
+            assert!(inner.flags.contains(Flags::SHUTDOWN));
+            assert!(!inner.flags.contains(Flags::WRITE_DISCONNECT));
+        }
+
+        let mut res = buf.take_write_buf().to_vec();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 4\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /efg\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn req_parse_err() {
+    lazy(|cx| {
+        let buf = TestBuffer::new("GET /test HTTP/1\r\n\r\n");
+
+        let services = HttpFlow::new(ok_service(), ExpectHandler, None);
+
+        let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+            buf.clone(),
+            services,
+            ServiceConfig::default(),
+            None,
+            OnConnectData::default(),
+        );
+
+        pin!(h1);
+
+        match h1.as_mut().poll(cx) {
+            Poll::Pending => panic!(),
+            Poll::Ready(res) => assert!(res.is_err()),
+        }
+
+        if let DispatcherStateProj::Normal { inner } = h1.project().inner.project() {
+            assert!(inner.flags.contains(Flags::READ_DISCONNECT));
+            assert_eq!(
+                &buf.write_buf_slice()[..26],
+                b"HTTP/1.1 400 Bad Request\r\n"
+            );
+        }
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn pipelining_ok_then_ok() {
+    lazy(|cx| {
+        let buf = TestBuffer::new(
+            "\
+                GET /abcd HTTP/1.1\r\n\r\n\
+                GET /def HTTP/1.1\r\n\r\n\
+                ",
+        );
+
+        let cfg = ServiceConfig::new(
+            KeepAlive::Disabled,
+            Duration::from_millis(1),
+            Duration::from_millis(1),
+            false,
+            None,
+        );
+
+        let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+        let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+            buf.clone(),
+            services,
+            cfg,
+            None,
+            OnConnectData::default(),
+        );
+
+        pin!(h1);
+
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        match h1.as_mut().poll(cx) {
+            Poll::Pending => panic!("first poll should not be pending"),
+            Poll::Ready(res) => assert!(res.is_ok()),
+        }
+
+        // polls: initial => shutdown
+        assert_eq!(h1.poll_count, 2);
+
+        let mut res = buf.write_buf_slice_mut();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 5\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /abcd\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 4\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /def\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn pipelining_ok_then_bad() {
+    lazy(|cx| {
+        let buf = TestBuffer::new(
+            "\
+                GET /abcd HTTP/1.1\r\n\r\n\
+                GET /def HTTP/1\r\n\r\n\
+                ",
+        );
+
+        let cfg = ServiceConfig::new(
+            KeepAlive::Disabled,
+            Duration::from_millis(1),
+            Duration::from_millis(1),
+            false,
+            None,
+        );
+
+        let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+        let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+            buf.clone(),
+            services,
+            cfg,
+            None,
+            OnConnectData::default(),
+        );
+
+        pin!(h1);
+
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        match h1.as_mut().poll(cx) {
+            Poll::Pending => panic!("first poll should not be pending"),
+            Poll::Ready(res) => assert!(res.is_err()),
+        }
+
+        // polls: initial => shutdown
+        assert_eq!(h1.poll_count, 1);
+
+        let mut res = buf.write_buf_slice_mut();
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = b"\
+                HTTP/1.1 200 OK\r\n\
+                content-length: 5\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                /abcd\
+                HTTP/1.1 400 Bad Request\r\n\
+                content-length: 0\r\n\
+                connection: close\r\n\
+                date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\r\n\
+                ";
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(exp)
+        );
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn expect_handling() {
+    lazy(|cx| {
+        let mut buf = TestSeqBuffer::empty();
+        let cfg = ServiceConfig::new(
+            KeepAlive::Disabled,
+            Duration::ZERO,
+            Duration::ZERO,
+            false,
+            None,
+        );
+
+        let services = HttpFlow::new(echo_payload_service(), ExpectHandler, None);
+
+        let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+            buf.clone(),
+            services,
+            cfg,
+            None,
+            OnConnectData::default(),
+        );
+
+        buf.extend_read_buf(
+            "\
+                POST /upload HTTP/1.1\r\n\
+                Content-Length: 5\r\n\
+                Expect: 100-continue\r\n\
+                \r\n\
+                ",
+        );
+
+        pin!(h1);
+
+        assert!(h1.as_mut().poll(cx).is_pending());
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        // polls: manual
+        assert_eq!(h1.poll_count, 1);
+
+        if let DispatcherState::Normal { ref inner } = h1.inner {
+            let io = inner.io.as_ref().unwrap();
+            let res = &io.write_buf()[..];
+            assert_eq!(
+                str::from_utf8(res).unwrap(),
+                "HTTP/1.1 100 Continue\r\n\r\n"
+            );
+        }
+
+        buf.extend_read_buf("12345");
+        assert!(h1.as_mut().poll(cx).is_ready());
+
+        // polls: manual manual shutdown
+        assert_eq!(h1.poll_count, 3);
+
+        if let DispatcherState::Normal { ref inner } = h1.inner {
+            let io = inner.io.as_ref().unwrap();
+            let mut res = (&io.write_buf()[..]).to_owned();
+            stabilize_date_header(&mut res);
+
+            assert_eq!(
+                str::from_utf8(&res).unwrap(),
+                "\
+                    HTTP/1.1 100 Continue\r\n\
+                    \r\n\
+                    HTTP/1.1 200 OK\r\n\
+                    content-length: 5\r\n\
+                    connection: close\r\n\
+                    date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\
+                    \r\n\
+                    12345\
+                    "
+            );
+        }
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn expect_eager() {
+    lazy(|cx| {
+        let mut buf = TestSeqBuffer::empty();
+        let cfg = ServiceConfig::new(
+            KeepAlive::Disabled,
+            Duration::ZERO,
+            Duration::ZERO,
+            false,
+            None,
+        );
+
+        let services = HttpFlow::new(echo_path_service(), ExpectHandler, None);
+
+        let h1 = Dispatcher::<_, _, _, _, UpgradeHandler>::new(
+            buf.clone(),
+            services,
+            cfg,
+            None,
+            OnConnectData::default(),
+        );
+
+        buf.extend_read_buf(
+            "\
+                POST /upload HTTP/1.1\r\n\
+                Content-Length: 5\r\n\
+                Expect: 100-continue\r\n\
+                \r\n\
+                ",
+        );
+
+        pin!(h1);
+
+        assert!(h1.as_mut().poll(cx).is_ready());
+        assert!(matches!(&h1.inner, DispatcherState::Normal { .. }));
+
+        // polls: manual shutdown
+        assert_eq!(h1.poll_count, 2);
+
+        if let DispatcherState::Normal { ref inner } = h1.inner {
+            let io = inner.io.as_ref().unwrap();
+            let mut res = (&io.write_buf()[..]).to_owned();
+            stabilize_date_header(&mut res);
+
+            // Despite the content-length header and even though the request payload has not
+            // been sent, this test expects a complete service response since the payload
+            // is not used at all. The service passed to dispatcher is path echo and doesn't
+            // consume payload bytes.
+            assert_eq!(
+                str::from_utf8(&res).unwrap(),
+                "\
+                    HTTP/1.1 100 Continue\r\n\
+                    \r\n\
+                    HTTP/1.1 200 OK\r\n\
+                    content-length: 7\r\n\
+                    connection: close\r\n\
+                    date: Thu, 01 Jan 1970 12:34:56 UTC\r\n\
+                    \r\n\
+                    /upload\
+                    "
+            );
+        }
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn upgrade_handling() {
+    struct TestUpgrade;
+
+    impl<T> Service<(Request, Framed<T, Codec>)> for TestUpgrade {
+        type Response = ();
+        type Error = Error;
+        type Future = Ready<Result<Self::Response, Self::Error>>;
+
+        actix_service::always_ready!();
+
+        fn call(&self, (req, _framed): (Request, Framed<T, Codec>)) -> Self::Future {
+            assert_eq!(req.method(), Method::GET);
+            assert!(req.upgrade());
+            assert_eq!(req.headers().get("upgrade").unwrap(), "websocket");
+            ready(Ok(()))
+        }
+    }
+
+    lazy(|cx| {
+        let mut buf = TestSeqBuffer::empty();
+        let cfg = ServiceConfig::new(
+            KeepAlive::Disabled,
+            Duration::ZERO,
+            Duration::ZERO,
+            false,
+            None,
+        );
+
+        let services = HttpFlow::new(ok_service(), ExpectHandler, Some(TestUpgrade));
+
+        let h1 = Dispatcher::<_, _, _, _, TestUpgrade>::new(
+            buf.clone(),
+            services,
+            cfg,
+            None,
+            OnConnectData::default(),
+        );
+
+        buf.extend_read_buf(
+            "\
+                GET /ws HTTP/1.1\r\n\
+                Connection: Upgrade\r\n\
+                Upgrade: websocket\r\n\
+                \r\n\
+                ",
+        );
+
+        pin!(h1);
+
+        assert!(h1.as_mut().poll(cx).is_ready());
+        assert!(matches!(&h1.inner, DispatcherState::Upgrade { .. }));
+
+        // polls: manual shutdown
+        assert_eq!(h1.poll_count, 2);
+    })
+    .await;
+}
+
+#[actix_rt::test]
+async fn handler_drop_payload() {
+    let _ = env_logger::try_init();
+
+    let mut buf = TestBuffer::new(http_msg(
+        r"
+        POST /drop-payload HTTP/1.1
+        Content-Length: 3
+        
+        abc
+        ",
+    ));
+
+    let services = HttpFlow::new(
+        drop_payload_service(),
+        ExpectHandler,
+        None::<UpgradeHandler>,
+    );
+
+    let h1 = Dispatcher::new(
+        buf.clone(),
+        services,
+        ServiceConfig::default(),
+        None,
+        OnConnectData::default(),
+    );
+    pin!(h1);
+
+    lazy(|cx| {
+        assert!(h1.as_mut().poll(cx).is_pending());
+
+        // polls: manual
+        assert_eq!(h1.poll_count, 1);
+
+        let mut res = BytesMut::from(buf.take_write_buf().as_ref());
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        let exp = http_msg(
+            r"
+            HTTP/1.1 200 OK
+            content-length: 15
+            date: Thu, 01 Jan 1970 12:34:56 UTC
+
+            payload dropped
+            ",
+        );
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(&exp)
+        );
+
+        if let DispatcherStateProj::Normal { inner } = h1.as_mut().project().inner.project() {
+            assert!(inner.state.is_none());
+        }
+    })
+    .await;
+
+    lazy(|cx| {
+        // add message that claims to have payload longer than provided
+        buf.extend_read_buf(http_msg(
+            r"
+            POST /drop-payload HTTP/1.1
+            Content-Length: 200
+            
+            abc
+            ",
+        ));
+
+        assert!(h1.as_mut().poll(cx).is_pending());
+
+        // polls: manual => manual
+        assert_eq!(h1.poll_count, 2);
+
+        let mut res = BytesMut::from(buf.take_write_buf().as_ref());
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        // expect response immediately even though request side has not finished reading payload
+        let exp = http_msg(
+            r"
+            HTTP/1.1 200 OK
+            content-length: 15
+            date: Thu, 01 Jan 1970 12:34:56 UTC
+
+            payload dropped
+            ",
+        );
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(&exp)
+        );
+    })
+    .await;
+
+    lazy(|cx| {
+        assert!(h1.as_mut().poll(cx).is_ready());
+
+        // polls: manual => manual => manual
+        assert_eq!(h1.poll_count, 3);
+
+        let mut res = BytesMut::from(buf.take_write_buf().as_ref());
+        stabilize_date_header(&mut res);
+        let res = &res[..];
+
+        // expect that unrequested error response is sent back since connection could not be cleaned
+        let exp = http_msg(
+            r"
+            HTTP/1.1 500 Internal Server Error
+            content-length: 0
+            connection: close
+            date: Thu, 01 Jan 1970 12:34:56 UTC
+
+            ",
+        );
+
+        assert_eq!(
+            res,
+            exp,
+            "\nexpected response not in write buffer:\n\
+               response: {:?}\n\
+               expected: {:?}",
+            String::from_utf8_lossy(res),
+            String::from_utf8_lossy(&exp)
+        );
+    })
+    .await;
+}
+
+fn http_msg(msg: impl AsRef<str>) -> BytesMut {
+    let mut msg = msg
+        .as_ref()
+        .trim()
+        .split('\n')
+        .into_iter()
+        .map(|line| [line.trim_start(), "\r"].concat())
+        .collect::<Vec<_>>()
+        .join("\n");
+
+    // remove trailing \r
+    msg.pop();
+
+    if !msg.is_empty() && !msg.contains("\r\n\r\n") {
+        msg.push_str("\r\n\r\n");
+    }
+
+    BytesMut::from(msg.as_bytes())
+}
+
+#[test]
+fn http_msg_creates_msg() {
+    assert_eq!(http_msg(r""), "");
+
+    assert_eq!(
+        http_msg(
+            r"
+            POST / HTTP/1.1
+            Content-Length: 3
+            
+            abc
+            "
+        ),
+        "POST / HTTP/1.1\r\nContent-Length: 3\r\n\r\nabc"
+    );
+
+    assert_eq!(
+        http_msg(
+            r"
+            GET / HTTP/1.1
+            Content-Length: 3
+            
+            "
+        ),
+        "GET / HTTP/1.1\r\nContent-Length: 3\r\n\r\n"
+    );
+}

actix-http/src/h1/encoder.rs

@@ -0,0 +1,666 @@
+use std::{
+    cmp,
+    io::{self, Write as _},
+    marker::PhantomData,
+    ptr::copy_nonoverlapping,
+    slice::from_raw_parts_mut,
+};
+
+use bytes::{BufMut, BytesMut};
+
+use crate::{
+    body::BodySize,
+    header::{
+        map::Value, HeaderMap, HeaderName, CONNECTION, CONTENT_LENGTH, DATE, TRANSFER_ENCODING,
+    },
+    helpers, ConnectionType, RequestHeadType, Response, ServiceConfig, StatusCode, Version,
+};
+
+const AVERAGE_HEADER_SIZE: usize = 30;
+
+#[derive(Debug)]
+pub(crate) struct MessageEncoder<T: MessageType> {
+    #[allow(dead_code)]
+    pub length: BodySize,
+    pub te: TransferEncoding,
+    _phantom: PhantomData<T>,
+}
+
+impl<T: MessageType> Default for MessageEncoder<T> {
+    fn default() -> Self {
+        MessageEncoder {
+            length: BodySize::None,
+            te: TransferEncoding::empty(),
+            _phantom: PhantomData,
+        }
+    }
+}
+
+pub(crate) trait MessageType: Sized {
+    fn status(&self) -> Option<StatusCode>;
+
+    fn headers(&self) -> &HeaderMap;
+
+    fn extra_headers(&self) -> Option<&HeaderMap>;
+
+    fn camel_case(&self) -> bool {
+        false
+    }
+
+    fn chunked(&self) -> bool;
+
+    fn encode_status(&mut self, dst: &mut BytesMut) -> io::Result<()>;
+
+    fn encode_headers(
+        &mut self,
+        dst: &mut BytesMut,
+        version: Version,
+        mut length: BodySize,
+        conn_type: ConnectionType,
+        config: &ServiceConfig,
+    ) -> io::Result<()> {
+        let chunked = self.chunked();
+        let mut skip_len = length != BodySize::Stream;
+        let camel_case = self.camel_case();
+
+        // Content length
+        if let Some(status) = self.status() {
+            match status {
+                StatusCode::CONTINUE
+                | StatusCode::SWITCHING_PROTOCOLS
+                | StatusCode::PROCESSING
+                | StatusCode::NO_CONTENT => {
+                    // skip content-length and transfer-encoding headers
+                    // see https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.1
+                    // and https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.2
+                    skip_len = true;
+                    length = BodySize::None
+                }
+
+                StatusCode::NOT_MODIFIED => {
+                    // 304 responses should never have a body but should retain a manually set
+                    // content-length header
+                    // see https://datatracker.ietf.org/doc/html/rfc7232#section-4.1
+                    skip_len = false;
+                    length = BodySize::None;
+                }
+
+                _ => {}
+            }
+        }
+
+        match length {
+            BodySize::Stream => {
+                if chunked {
+                    skip_len = true;
+                    if camel_case {
+                        dst.put_slice(b"\r\nTransfer-Encoding: chunked\r\n")
+                    } else {
+                        dst.put_slice(b"\r\ntransfer-encoding: chunked\r\n")
+                    }
+                } else {
+                    skip_len = false;
+                    dst.put_slice(b"\r\n");
+                }
+            }
+            BodySize::Sized(0) if camel_case => dst.put_slice(b"\r\nContent-Length: 0\r\n"),
+            BodySize::Sized(0) => dst.put_slice(b"\r\ncontent-length: 0\r\n"),
+            BodySize::Sized(len) => helpers::write_content_length(len, dst, camel_case),
+            BodySize::None => dst.put_slice(b"\r\n"),
+        }
+
+        // Connection
+        match conn_type {
+            ConnectionType::Upgrade => dst.put_slice(b"connection: upgrade\r\n"),
+            ConnectionType::KeepAlive if version < Version::HTTP_11 => {
+                if camel_case {
+                    dst.put_slice(b"Connection: keep-alive\r\n")
+                } else {
+                    dst.put_slice(b"connection: keep-alive\r\n")
+                }
+            }
+            ConnectionType::Close if version >= Version::HTTP_11 => {
+                if camel_case {
+                    dst.put_slice(b"Connection: close\r\n")
+                } else {
+                    dst.put_slice(b"connection: close\r\n")
+                }
+            }
+            _ => {}
+        }
+
+        // write headers
+
+        let mut has_date = false;
+
+        let mut buf = dst.chunk_mut().as_mut_ptr();
+        let mut remaining = dst.capacity() - dst.len();
+
+        // tracks bytes written since last buffer resize
+        // since buf is a raw pointer to a bytes container storage but is written to without the
+        // container's knowledge, this is used to sync the containers cursor after data is written
+        let mut pos = 0;
+
+        self.write_headers(|key, value| {
+            match *key {
+                CONNECTION => return,
+                TRANSFER_ENCODING | CONTENT_LENGTH if skip_len => return,
+                DATE => has_date = true,
+                _ => {}
+            }
+
+            let k = key.as_str().as_bytes();
+            let k_len = k.len();
+
+            for val in value.iter() {
+                let v = val.as_ref();
+                let v_len = v.len();
+
+                // key length + value length + colon + space + \r\n
+                let len = k_len + v_len + 4;
+
+                if len > remaining {
+                    // SAFETY: all the bytes written up to position "pos" are initialized
+                    // the written byte count and pointer advancement are kept in sync
+                    unsafe {
+                        dst.advance_mut(pos);
+                    }
+
+                    pos = 0;
+                    dst.reserve(len * 2);
+                    remaining = dst.capacity() - dst.len();
+
+                    // re-assign buf raw pointer since it's possible that the buffer was
+                    // reallocated and/or resized
+                    buf = dst.chunk_mut().as_mut_ptr();
+                }
+
+                // SAFETY: on each write, it is enough to ensure that the advancement of
+                // the cursor matches the number of bytes written
+                unsafe {
+                    if camel_case {
+                        // use Camel-Case headers
+                        write_camel_case(k, buf, k_len);
+                    } else {
+                        write_data(k, buf, k_len);
+                    }
+
+                    buf = buf.add(k_len);
+
+                    write_data(b": ", buf, 2);
+                    buf = buf.add(2);
+
+                    write_data(v, buf, v_len);
+                    buf = buf.add(v_len);
+
+                    write_data(b"\r\n", buf, 2);
+                    buf = buf.add(2);
+                };
+
+                pos += len;
+                remaining -= len;
+            }
+        });
+
+        // final cursor synchronization with the bytes container
+        //
+        // SAFETY: all the bytes written up to position "pos" are initialized
+        // the written byte count and pointer advancement are kept in sync
+        unsafe {
+            dst.advance_mut(pos);
+        }
+
+        if !has_date {
+            // optimized date header, write_date_header writes its own \r\n
+            config.write_date_header(dst, camel_case);
+        }
+
+        // end-of-headers marker
+        dst.extend_from_slice(b"\r\n");
+
+        Ok(())
+    }
+
+    fn write_headers<F>(&mut self, mut f: F)
+    where
+        F: FnMut(&HeaderName, &Value),
+    {
+        match self.extra_headers() {
+            Some(headers) => {
+                // merging headers from head and extra headers.
+                self.headers()
+                    .inner
+                    .iter()
+                    .filter(|(name, _)| !headers.contains_key(*name))
+                    .chain(headers.inner.iter())
+                    .for_each(|(k, v)| f(k, v))
+            }
+            None => self.headers().inner.iter().for_each(|(k, v)| f(k, v)),
+        }
+    }
+}
+
+impl MessageType for Response<()> {
+    fn status(&self) -> Option<StatusCode> {
+        Some(self.head().status)
+    }
+
+    fn chunked(&self) -> bool {
+        self.head().chunked()
+    }
+
+    fn headers(&self) -> &HeaderMap {
+        &self.head().headers
+    }
+
+    fn extra_headers(&self) -> Option<&HeaderMap> {
+        None
+    }
+
+    fn camel_case(&self) -> bool {
+        self.head()
+            .flags
+            .contains(crate::message::Flags::CAMEL_CASE)
+    }
+
+    fn encode_status(&mut self, dst: &mut BytesMut) -> io::Result<()> {
+        let head = self.head();
+        let reason = head.reason().as_bytes();
+        dst.reserve(256 + head.headers.len() * AVERAGE_HEADER_SIZE + reason.len());
+
+        // status line
+        helpers::write_status_line(head.version, head.status.as_u16(), dst);
+        dst.put_slice(reason);
+        Ok(())
+    }
+}
+
+impl MessageType for RequestHeadType {
+    fn status(&self) -> Option<StatusCode> {
+        None
+    }
+
+    fn chunked(&self) -> bool {
+        self.as_ref().chunked()
+    }
+
+    fn camel_case(&self) -> bool {
+        self.as_ref().camel_case_headers()
+    }
+
+    fn headers(&self) -> &HeaderMap {
+        self.as_ref().headers()
+    }
+
+    fn extra_headers(&self) -> Option<&HeaderMap> {
+        self.extra_headers()
+    }
+
+    fn encode_status(&mut self, dst: &mut BytesMut) -> io::Result<()> {
+        let head = self.as_ref();
+        dst.reserve(256 + head.headers.len() * AVERAGE_HEADER_SIZE);
+        write!(
+            helpers::MutWriter(dst),
+            "{} {} {}",
+            head.method,
+            head.uri.path_and_query().map(|u| u.as_str()).unwrap_or("/"),
+            match head.version {
+                Version::HTTP_09 => "HTTP/0.9",
+                Version::HTTP_10 => "HTTP/1.0",
+                Version::HTTP_11 => "HTTP/1.1",
+                Version::HTTP_2 => "HTTP/2.0",
+                Version::HTTP_3 => "HTTP/3.0",
+                _ => return Err(io::Error::new(io::ErrorKind::Other, "unsupported version")),
+            }
+        )
+        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))
+    }
+}
+
+impl<T: MessageType> MessageEncoder<T> {
+    /// Encode chunk.
+    pub fn encode_chunk(&mut self, msg: &[u8], buf: &mut BytesMut) -> io::Result<bool> {
+        self.te.encode(msg, buf)
+    }
+
+    /// Encode EOF.
+    pub fn encode_eof(&mut self, buf: &mut BytesMut) -> io::Result<()> {
+        self.te.encode_eof(buf)
+    }
+
+    /// Encode message.
+    pub fn encode(
+        &mut self,
+        dst: &mut BytesMut,
+        message: &mut T,
+        head: bool,
+        stream: bool,
+        version: Version,
+        length: BodySize,
+        conn_type: ConnectionType,
+        config: &ServiceConfig,
+    ) -> io::Result<()> {
+        // transfer encoding
+        if !head {
+            self.te = match length {
+                BodySize::Sized(0) => TransferEncoding::empty(),
+                BodySize::Sized(len) => TransferEncoding::length(len),
+                BodySize::Stream => {
+                    if message.chunked() && !stream {
+                        TransferEncoding::chunked()
+                    } else {
+                        TransferEncoding::eof()
+                    }
+                }
+                BodySize::None => TransferEncoding::empty(),
+            };
+        } else {
+            self.te = TransferEncoding::empty();
+        }
+
+        message.encode_status(dst)?;
+        message.encode_headers(dst, version, length, conn_type, config)
+    }
+}
+
+/// Encoders to handle different Transfer-Encodings.
+#[derive(Debug)]
+pub(crate) struct TransferEncoding {
+    kind: TransferEncodingKind,
+}
+
+#[derive(Debug, PartialEq, Clone)]
+enum TransferEncodingKind {
+    /// An Encoder for when Transfer-Encoding includes `chunked`.
+    Chunked(bool),
+
+    /// An Encoder for when Content-Length is set.
+    ///
+    /// Enforces that the body is not longer than the Content-Length header.
+    Length(u64),
+
+    /// An Encoder for when Content-Length is not known.
+    ///
+    /// Application decides when to stop writing.
+    Eof,
+}
+
+impl TransferEncoding {
+    #[inline]
+    pub fn empty() -> TransferEncoding {
+        TransferEncoding {
+            kind: TransferEncodingKind::Length(0),
+        }
+    }
+
+    #[inline]
+    pub fn eof() -> TransferEncoding {
+        TransferEncoding {
+            kind: TransferEncodingKind::Eof,
+        }
+    }
+
+    #[inline]
+    pub fn chunked() -> TransferEncoding {
+        TransferEncoding {
+            kind: TransferEncodingKind::Chunked(false),
+        }
+    }
+
+    #[inline]
+    pub fn length(len: u64) -> TransferEncoding {
+        TransferEncoding {
+            kind: TransferEncodingKind::Length(len),
+        }
+    }
+
+    /// Encode message. Return `EOF` state of encoder
+    #[inline]
+    pub fn encode(&mut self, msg: &[u8], buf: &mut BytesMut) -> io::Result<bool> {
+        match self.kind {
+            TransferEncodingKind::Eof => {
+                let eof = msg.is_empty();
+                buf.extend_from_slice(msg);
+                Ok(eof)
+            }
+            TransferEncodingKind::Chunked(ref mut eof) => {
+                if *eof {
+                    return Ok(true);
+                }
+
+                if msg.is_empty() {
+                    *eof = true;
+                    buf.extend_from_slice(b"0\r\n\r\n");
+                } else {
+                    writeln!(helpers::MutWriter(buf), "{:X}\r", msg.len())
+                        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+
+                    buf.reserve(msg.len() + 2);
+                    buf.extend_from_slice(msg);
+                    buf.extend_from_slice(b"\r\n");
+                }
+                Ok(*eof)
+            }
+            TransferEncodingKind::Length(ref mut remaining) => {
+                if *remaining > 0 {
+                    if msg.is_empty() {
+                        return Ok(*remaining == 0);
+                    }
+                    let len = cmp::min(*remaining, msg.len() as u64);
+
+                    buf.extend_from_slice(&msg[..len as usize]);
+
+                    *remaining -= len as u64;
+                    Ok(*remaining == 0)
+                } else {
+                    Ok(true)
+                }
+            }
+        }
+    }
+
+    /// Encode eof. Return `EOF` state of encoder
+    #[inline]
+    pub fn encode_eof(&mut self, buf: &mut BytesMut) -> io::Result<()> {
+        match self.kind {
+            TransferEncodingKind::Eof => Ok(()),
+            TransferEncodingKind::Length(rem) => {
+                if rem != 0 {
+                    Err(io::Error::new(io::ErrorKind::UnexpectedEof, ""))
+                } else {
+                    Ok(())
+                }
+            }
+            TransferEncodingKind::Chunked(ref mut eof) => {
+                if !*eof {
+                    *eof = true;
+                    buf.extend_from_slice(b"0\r\n\r\n");
+                }
+                Ok(())
+            }
+        }
+    }
+}
+
+/// # Safety
+/// Callers must ensure that the given `len` matches the given `value` length and that `buf` is
+/// valid for writes of at least `len` bytes.
+unsafe fn write_data(value: &[u8], buf: *mut u8, len: usize) {
+    debug_assert_eq!(value.len(), len);
+    copy_nonoverlapping(value.as_ptr(), buf, len);
+}
+
+/// # Safety
+/// Callers must ensure that the given `len` matches the given `value` length and that `buf` is
+/// valid for writes of at least `len` bytes.
+unsafe fn write_camel_case(value: &[u8], buf: *mut u8, len: usize) {
+    // first copy entire (potentially wrong) slice to output
+    write_data(value, buf, len);
+
+    // SAFETY: We just initialized the buffer with `value`
+    let buffer = from_raw_parts_mut(buf, len);
+
+    let mut iter = value.iter();
+
+    // first character should be uppercase
+    if let Some(c @ b'a'..=b'z') = iter.next() {
+        buffer[0] = c & 0b1101_1111;
+    }
+
+    // track 1 ahead of the current position since that's the location being assigned to
+    let mut index = 2;
+
+    // remaining characters after hyphens should also be uppercase
+    while let Some(&c) = iter.next() {
+        if c == b'-' {
+            // advance iter by one and uppercase if needed
+            if let Some(c @ b'a'..=b'z') = iter.next() {
+                buffer[index] = c & 0b1101_1111;
+            }
+        }
+
+        index += 1;
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::rc::Rc;
+
+    use bytes::Bytes;
+    use http::header::AUTHORIZATION;
+
+    use super::*;
+    use crate::{
+        header::{HeaderValue, CONTENT_TYPE},
+        RequestHead,
+    };
+
+    #[test]
+    fn test_chunked_te() {
+        let mut bytes = BytesMut::new();
+        let mut enc = TransferEncoding::chunked();
+        {
+            assert!(!enc.encode(b"test", &mut bytes).ok().unwrap());
+            assert!(enc.encode(b"", &mut bytes).ok().unwrap());
+        }
+        assert_eq!(
+            bytes.split().freeze(),
+            Bytes::from_static(b"4\r\ntest\r\n0\r\n\r\n")
+        );
+    }
+
+    #[actix_rt::test]
+    async fn test_camel_case() {
+        let mut bytes = BytesMut::with_capacity(2048);
+        let mut head = RequestHead::default();
+        head.set_camel_case_headers(true);
+        head.headers.insert(DATE, HeaderValue::from_static("date"));
+        head.headers
+            .insert(CONTENT_TYPE, HeaderValue::from_static("plain/text"));
+
+        let mut head = RequestHeadType::Owned(head);
+
+        let _ = head.encode_headers(
+            &mut bytes,
+            Version::HTTP_11,
+            BodySize::Sized(0),
+            ConnectionType::Close,
+            &ServiceConfig::default(),
+        );
+        let data = String::from_utf8(Vec::from(bytes.split().freeze().as_ref())).unwrap();
+
+        assert!(data.contains("Content-Length: 0\r\n"));
+        assert!(data.contains("Connection: close\r\n"));
+        assert!(data.contains("Content-Type: plain/text\r\n"));
+        assert!(data.contains("Date: date\r\n"));
+
+        let _ = head.encode_headers(
+            &mut bytes,
+            Version::HTTP_11,
+            BodySize::Stream,
+            ConnectionType::KeepAlive,
+            &ServiceConfig::default(),
+        );
+        let data = String::from_utf8(Vec::from(bytes.split().freeze().as_ref())).unwrap();
+        assert!(data.contains("Transfer-Encoding: chunked\r\n"));
+        assert!(data.contains("Content-Type: plain/text\r\n"));
+        assert!(data.contains("Date: date\r\n"));
+
+        let mut head = RequestHead::default();
+        head.set_camel_case_headers(false);
+        head.headers.insert(DATE, HeaderValue::from_static("date"));
+        head.headers
+            .insert(CONTENT_TYPE, HeaderValue::from_static("plain/text"));
+        head.headers
+            .append(CONTENT_TYPE, HeaderValue::from_static("xml"));
+
+        let mut head = RequestHeadType::Owned(head);
+        let _ = head.encode_headers(
+            &mut bytes,
+            Version::HTTP_11,
+            BodySize::Stream,
+            ConnectionType::KeepAlive,
+            &ServiceConfig::default(),
+        );
+        let data = String::from_utf8(Vec::from(bytes.split().freeze().as_ref())).unwrap();
+        assert!(data.contains("transfer-encoding: chunked\r\n"));
+        assert!(data.contains("content-type: xml\r\n"));
+        assert!(data.contains("content-type: plain/text\r\n"));
+        assert!(data.contains("date: date\r\n"));
+    }
+
+    #[actix_rt::test]
+    async fn test_extra_headers() {
+        let mut bytes = BytesMut::with_capacity(2048);
+
+        let mut head = RequestHead::default();
+        head.headers.insert(
+            AUTHORIZATION,
+            HeaderValue::from_static("some authorization"),
+        );
+
+        let mut extra_headers = HeaderMap::new();
+        extra_headers.insert(
+            AUTHORIZATION,
+            HeaderValue::from_static("another authorization"),
+        );
+        extra_headers.insert(DATE, HeaderValue::from_static("date"));
+
+        let mut head = RequestHeadType::Rc(Rc::new(head), Some(extra_headers));
+
+        let _ = head.encode_headers(
+            &mut bytes,
+            Version::HTTP_11,
+            BodySize::Sized(0),
+            ConnectionType::Close,
+            &ServiceConfig::default(),
+        );
+        let data = String::from_utf8(Vec::from(bytes.split().freeze().as_ref())).unwrap();
+        assert!(data.contains("content-length: 0\r\n"));
+        assert!(data.contains("connection: close\r\n"));
+        assert!(data.contains("authorization: another authorization\r\n"));
+        assert!(data.contains("date: date\r\n"));
+    }
+
+    #[actix_rt::test]
+    async fn test_no_content_length() {
+        let mut bytes = BytesMut::with_capacity(2048);
+
+        let mut res = Response::with_body(StatusCode::SWITCHING_PROTOCOLS, ());
+        res.headers_mut().insert(DATE, HeaderValue::from_static(""));
+        res.headers_mut()
+            .insert(CONTENT_LENGTH, HeaderValue::from_static("0"));
+
+        let _ = res.encode_headers(
+            &mut bytes,
+            Version::HTTP_11,
+            BodySize::Stream,
+            ConnectionType::Upgrade,
+            &ServiceConfig::default(),
+        );
+        let data = String::from_utf8(Vec::from(bytes.split().freeze().as_ref())).unwrap();
+        assert!(!data.contains("content-length: 0\r\n"));
+        assert!(!data.contains("transfer-encoding: chunked\r\n"));
+    }
+}

actix-http/src/h1/expect.rs

@@ -0,0 +1,33 @@
+use actix_service::{Service, ServiceFactory};
+use actix_utils::future::{ready, Ready};
+
+use crate::{Error, Request};
+
+pub struct ExpectHandler;
+
+impl ServiceFactory<Request> for ExpectHandler {
+    type Response = Request;
+    type Error = Error;
+    type Config = ();
+    type Service = ExpectHandler;
+    type InitError = Error;
+    type Future = Ready<Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: Self::Config) -> Self::Future {
+        ready(Ok(ExpectHandler))
+    }
+}
+
+impl Service<Request> for ExpectHandler {
+    type Response = Request;
+    type Error = Error;
+    type Future = Ready<Result<Self::Response, Self::Error>>;
+
+    actix_service::always_ready!();
+
+    fn call(&self, req: Request) -> Self::Future {
+        ready(Ok(req))
+        // TODO: add some way to trigger error
+        // Err(error::ErrorExpectationFailed("test"))
+    }
+}

actix-http/src/h1/mod.rs

@@ -0,0 +1,91 @@
+//! HTTP/1 protocol implementation.
+
+use bytes::{Bytes, BytesMut};
+
+mod chunked;
+mod client;
+mod codec;
+mod decoder;
+mod dispatcher;
+#[cfg(test)]
+mod dispatcher_tests;
+mod encoder;
+mod expect;
+mod payload;
+mod service;
+mod timer;
+mod upgrade;
+mod utils;
+
+pub use self::client::{ClientCodec, ClientPayloadCodec};
+pub use self::codec::Codec;
+pub use self::dispatcher::Dispatcher;
+pub use self::expect::ExpectHandler;
+pub use self::payload::Payload;
+pub use self::service::{H1Service, H1ServiceHandler};
+pub use self::upgrade::UpgradeHandler;
+pub use self::utils::SendResponse;
+
+#[derive(Debug)]
+/// Codec message
+pub enum Message<T> {
+    /// HTTP message.
+    Item(T),
+
+    /// Payload chunk.
+    Chunk(Option<Bytes>),
+}
+
+impl<T> From<T> for Message<T> {
+    fn from(item: T) -> Self {
+        Message::Item(item)
+    }
+}
+
+/// Incoming request type
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum MessageType {
+    None,
+    Payload,
+    Stream,
+}
+
+const LW: usize = 2 * 1024;
+const HW: usize = 32 * 1024;
+
+pub(crate) fn reserve_readbuf(src: &mut BytesMut) {
+    let cap = src.capacity();
+    if cap < LW {
+        src.reserve(HW - cap);
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::Request;
+
+    impl Message<Request> {
+        pub fn message(self) -> Request {
+            match self {
+                Message::Item(req) => req,
+                _ => panic!("error"),
+            }
+        }
+
+        pub fn chunk(self) -> Bytes {
+            match self {
+                Message::Chunk(Some(data)) => data,
+                _ => panic!("error"),
+            }
+        }
+
+        pub fn eof(self) -> bool {
+            match self {
+                Message::Chunk(None) => true,
+                Message::Chunk(Some(_)) => false,
+                _ => panic!("error"),
+            }
+        }
+    }
+}

actix-http/src/h1/payload.rs

@@ -0,0 +1,284 @@
+//! Payload stream
+
+use std::{
+    cell::RefCell,
+    collections::VecDeque,
+    pin::Pin,
+    rc::{Rc, Weak},
+    task::{Context, Poll, Waker},
+};
+
+use bytes::Bytes;
+use futures_core::Stream;
+
+use crate::error::PayloadError;
+
+/// max buffer size 32k
+pub(crate) const MAX_BUFFER_SIZE: usize = 32_768;
+
+#[derive(Debug, PartialEq)]
+pub enum PayloadStatus {
+    Read,
+    Pause,
+    Dropped,
+}
+
+/// Buffered stream of bytes chunks
+///
+/// Payload stores chunks in a vector. First chunk can be received with `poll_next`. Payload does
+/// not notify current task when new data is available.
+///
+/// Payload can be used as `Response` body stream.
+#[derive(Debug)]
+pub struct Payload {
+    inner: Rc<RefCell<Inner>>,
+}
+
+impl Payload {
+    /// Creates a payload stream.
+    ///
+    /// This method construct two objects responsible for bytes stream generation:
+    /// - `PayloadSender` - *Sender* side of the stream
+    /// - `Payload` - *Receiver* side of the stream
+    pub fn create(eof: bool) -> (PayloadSender, Payload) {
+        let shared = Rc::new(RefCell::new(Inner::new(eof)));
+
+        (
+            PayloadSender::new(Rc::downgrade(&shared)),
+            Payload { inner: shared },
+        )
+    }
+
+    /// Creates an empty payload.
+    pub(crate) fn empty() -> Payload {
+        Payload {
+            inner: Rc::new(RefCell::new(Inner::new(true))),
+        }
+    }
+
+    /// Length of the data in this payload
+    #[cfg(test)]
+    pub fn len(&self) -> usize {
+        self.inner.borrow().len()
+    }
+
+    /// Is payload empty
+    #[cfg(test)]
+    pub fn is_empty(&self) -> bool {
+        self.inner.borrow().len() == 0
+    }
+
+    /// Put unused data back to payload
+    #[inline]
+    pub fn unread_data(&mut self, data: Bytes) {
+        self.inner.borrow_mut().unread_data(data);
+    }
+}
+
+impl Stream for Payload {
+    type Item = Result<Bytes, PayloadError>;
+
+    fn poll_next(
+        self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, PayloadError>>> {
+        Pin::new(&mut *self.inner.borrow_mut()).poll_next(cx)
+    }
+}
+
+/// Sender part of the payload stream
+pub struct PayloadSender {
+    inner: Weak<RefCell<Inner>>,
+}
+
+impl PayloadSender {
+    fn new(inner: Weak<RefCell<Inner>>) -> Self {
+        Self { inner }
+    }
+
+    #[inline]
+    pub fn set_error(&mut self, err: PayloadError) {
+        if let Some(shared) = self.inner.upgrade() {
+            shared.borrow_mut().set_error(err)
+        }
+    }
+
+    #[inline]
+    pub fn feed_eof(&mut self) {
+        if let Some(shared) = self.inner.upgrade() {
+            shared.borrow_mut().feed_eof()
+        }
+    }
+
+    #[inline]
+    pub fn feed_data(&mut self, data: Bytes) {
+        if let Some(shared) = self.inner.upgrade() {
+            shared.borrow_mut().feed_data(data)
+        }
+    }
+
+    #[inline]
+    pub fn need_read(&self, cx: &mut Context<'_>) -> PayloadStatus {
+        // we check need_read only if Payload (other side) is alive,
+        // otherwise always return true (consume payload)
+        if let Some(shared) = self.inner.upgrade() {
+            if shared.borrow().need_read {
+                PayloadStatus::Read
+            } else {
+                shared.borrow_mut().register_io(cx);
+                PayloadStatus::Pause
+            }
+        } else {
+            PayloadStatus::Dropped
+        }
+    }
+}
+
+#[derive(Debug)]
+struct Inner {
+    len: usize,
+    eof: bool,
+    err: Option<PayloadError>,
+    need_read: bool,
+    items: VecDeque<Bytes>,
+    task: Option<Waker>,
+    io_task: Option<Waker>,
+}
+
+impl Inner {
+    fn new(eof: bool) -> Self {
+        Inner {
+            eof,
+            len: 0,
+            err: None,
+            items: VecDeque::new(),
+            need_read: true,
+            task: None,
+            io_task: None,
+        }
+    }
+
+    /// Wake up future waiting for payload data to be available.
+    fn wake(&mut self) {
+        if let Some(waker) = self.task.take() {
+            waker.wake();
+        }
+    }
+
+    /// Wake up future feeding data to Payload.
+    fn wake_io(&mut self) {
+        if let Some(waker) = self.io_task.take() {
+            waker.wake();
+        }
+    }
+
+    /// Register future waiting data from payload.
+    /// Waker would be used in `Inner::wake`
+    fn register(&mut self, cx: &mut Context<'_>) {
+        if self
+            .task
+            .as_ref()
+            .map_or(true, |w| !cx.waker().will_wake(w))
+        {
+            self.task = Some(cx.waker().clone());
+        }
+    }
+
+    // Register future feeding data to payload.
+    /// Waker would be used in `Inner::wake_io`
+    fn register_io(&mut self, cx: &mut Context<'_>) {
+        if self
+            .io_task
+            .as_ref()
+            .map_or(true, |w| !cx.waker().will_wake(w))
+        {
+            self.io_task = Some(cx.waker().clone());
+        }
+    }
+
+    #[inline]
+    fn set_error(&mut self, err: PayloadError) {
+        self.err = Some(err);
+    }
+
+    #[inline]
+    fn feed_eof(&mut self) {
+        self.eof = true;
+    }
+
+    #[inline]
+    fn feed_data(&mut self, data: Bytes) {
+        self.len += data.len();
+        self.items.push_back(data);
+        self.need_read = self.len < MAX_BUFFER_SIZE;
+        self.wake();
+    }
+
+    #[cfg(test)]
+    fn len(&self) -> usize {
+        self.len
+    }
+
+    fn poll_next(
+        mut self: Pin<&mut Self>,
+        cx: &mut Context<'_>,
+    ) -> Poll<Option<Result<Bytes, PayloadError>>> {
+        if let Some(data) = self.items.pop_front() {
+            self.len -= data.len();
+            self.need_read = self.len < MAX_BUFFER_SIZE;
+
+            if self.need_read && !self.eof {
+                self.register(cx);
+            }
+            self.wake_io();
+            Poll::Ready(Some(Ok(data)))
+        } else if let Some(err) = self.err.take() {
+            Poll::Ready(Some(Err(err)))
+        } else if self.eof {
+            Poll::Ready(None)
+        } else {
+            self.need_read = true;
+            self.register(cx);
+            self.wake_io();
+            Poll::Pending
+        }
+    }
+
+    fn unread_data(&mut self, data: Bytes) {
+        self.len += data.len();
+        self.items.push_front(data);
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::panic::{RefUnwindSafe, UnwindSafe};
+
+    use actix_utils::future::poll_fn;
+    use static_assertions::{assert_impl_all, assert_not_impl_any};
+
+    use super::*;
+
+    assert_impl_all!(Payload: Unpin);
+    assert_not_impl_any!(Payload: Send, Sync, UnwindSafe, RefUnwindSafe);
+
+    assert_impl_all!(Inner: Unpin, Send, Sync);
+    assert_not_impl_any!(Inner: UnwindSafe, RefUnwindSafe);
+
+    #[actix_rt::test]
+    async fn test_unread_data() {
+        let (_, mut payload) = Payload::create(false);
+
+        payload.unread_data(Bytes::from("data"));
+        assert!(!payload.is_empty());
+        assert_eq!(payload.len(), 4);
+
+        assert_eq!(
+            Bytes::from("data"),
+            poll_fn(|cx| Pin::new(&mut payload).poll_next(cx))
+                .await
+                .unwrap()
+                .unwrap()
+        );
+    }
+}

actix-http/src/h1/service.rs

@@ -0,0 +1,369 @@
+use std::{
+    fmt,
+    marker::PhantomData,
+    net,
+    rc::Rc,
+    task::{Context, Poll},
+};
+
+use actix_codec::{AsyncRead, AsyncWrite, Framed};
+use actix_rt::net::TcpStream;
+use actix_service::{
+    fn_service, IntoServiceFactory, Service, ServiceFactory, ServiceFactoryExt as _,
+};
+use actix_utils::future::ready;
+use futures_core::future::LocalBoxFuture;
+
+use crate::{
+    body::{BoxBody, MessageBody},
+    config::ServiceConfig,
+    error::DispatchError,
+    service::HttpServiceHandler,
+    ConnectCallback, OnConnectData, Request, Response,
+};
+
+use super::{codec::Codec, dispatcher::Dispatcher, ExpectHandler, UpgradeHandler};
+
+/// `ServiceFactory` implementation for HTTP1 transport
+pub struct H1Service<T, S, B, X = ExpectHandler, U = UpgradeHandler> {
+    srv: S,
+    cfg: ServiceConfig,
+    expect: X,
+    upgrade: Option<U>,
+    on_connect_ext: Option<Rc<ConnectCallback<T>>>,
+    _phantom: PhantomData<B>,
+}
+
+impl<T, S, B> H1Service<T, S, B>
+where
+    S: ServiceFactory<Request, Config = ()>,
+    S::Error: Into<Response<BoxBody>>,
+    S::InitError: fmt::Debug,
+    S::Response: Into<Response<B>>,
+    B: MessageBody,
+{
+    /// Create new `HttpService` instance with config.
+    pub(crate) fn with_config<F: IntoServiceFactory<S, Request>>(
+        cfg: ServiceConfig,
+        service: F,
+    ) -> Self {
+        H1Service {
+            cfg,
+            srv: service.into_factory(),
+            expect: ExpectHandler,
+            upgrade: None,
+            on_connect_ext: None,
+            _phantom: PhantomData,
+        }
+    }
+}
+
+impl<S, B, X, U> H1Service<TcpStream, S, B, X, U>
+where
+    S: ServiceFactory<Request, Config = ()>,
+    S::Future: 'static,
+    S::Error: Into<Response<BoxBody>>,
+    S::InitError: fmt::Debug,
+    S::Response: Into<Response<B>>,
+
+    B: MessageBody,
+
+    X: ServiceFactory<Request, Config = (), Response = Request>,
+    X::Future: 'static,
+    X::Error: Into<Response<BoxBody>>,
+    X::InitError: fmt::Debug,
+
+    U: ServiceFactory<(Request, Framed<TcpStream, Codec>), Config = (), Response = ()>,
+    U::Future: 'static,
+    U::Error: fmt::Display + Into<Response<BoxBody>>,
+    U::InitError: fmt::Debug,
+{
+    /// Create simple tcp stream service
+    pub fn tcp(
+        self,
+    ) -> impl ServiceFactory<
+        TcpStream,
+        Config = (),
+        Response = (),
+        Error = DispatchError,
+        InitError = (),
+    > {
+        fn_service(|io: TcpStream| {
+            let peer_addr = io.peer_addr().ok();
+            ready(Ok((io, peer_addr)))
+        })
+        .and_then(self)
+    }
+}
+
+#[cfg(feature = "openssl")]
+mod openssl {
+    use super::*;
+
+    use actix_tls::accept::{
+        openssl::{
+            reexports::{Error as SslError, SslAcceptor},
+            Acceptor, TlsStream,
+        },
+        TlsError,
+    };
+
+    impl<S, B, X, U> H1Service<TlsStream<TcpStream>, S, B, X, U>
+    where
+        S: ServiceFactory<Request, Config = ()>,
+        S::Future: 'static,
+        S::Error: Into<Response<BoxBody>>,
+        S::InitError: fmt::Debug,
+        S::Response: Into<Response<B>>,
+
+        B: MessageBody,
+
+        X: ServiceFactory<Request, Config = (), Response = Request>,
+        X::Future: 'static,
+        X::Error: Into<Response<BoxBody>>,
+        X::InitError: fmt::Debug,
+
+        U: ServiceFactory<
+            (Request, Framed<TlsStream<TcpStream>, Codec>),
+            Config = (),
+            Response = (),
+        >,
+        U::Future: 'static,
+        U::Error: fmt::Display + Into<Response<BoxBody>>,
+        U::InitError: fmt::Debug,
+    {
+        /// Create OpenSSL based service.
+        pub fn openssl(
+            self,
+            acceptor: SslAcceptor,
+        ) -> impl ServiceFactory<
+            TcpStream,
+            Config = (),
+            Response = (),
+            Error = TlsError<SslError, DispatchError>,
+            InitError = (),
+        > {
+            Acceptor::new(acceptor)
+                .map_init_err(|_| {
+                    unreachable!("TLS acceptor service factory does not error on init")
+                })
+                .map_err(TlsError::into_service_error)
+                .map(|io: TlsStream<TcpStream>| {
+                    let peer_addr = io.get_ref().peer_addr().ok();
+                    (io, peer_addr)
+                })
+                .and_then(self.map_err(TlsError::Service))
+        }
+    }
+}
+
+#[cfg(feature = "rustls")]
+mod rustls {
+
+    use std::io;
+
+    use actix_service::ServiceFactoryExt as _;
+    use actix_tls::accept::{
+        rustls::{reexports::ServerConfig, Acceptor, TlsStream},
+        TlsError,
+    };
+
+    use super::*;
+
+    impl<S, B, X, U> H1Service<TlsStream<TcpStream>, S, B, X, U>
+    where
+        S: ServiceFactory<Request, Config = ()>,
+        S::Future: 'static,
+        S::Error: Into<Response<BoxBody>>,
+        S::InitError: fmt::Debug,
+        S::Response: Into<Response<B>>,
+
+        B: MessageBody,
+
+        X: ServiceFactory<Request, Config = (), Response = Request>,
+        X::Future: 'static,
+        X::Error: Into<Response<BoxBody>>,
+        X::InitError: fmt::Debug,
+
+        U: ServiceFactory<
+            (Request, Framed<TlsStream<TcpStream>, Codec>),
+            Config = (),
+            Response = (),
+        >,
+        U::Future: 'static,
+        U::Error: fmt::Display + Into<Response<BoxBody>>,
+        U::InitError: fmt::Debug,
+    {
+        /// Create Rustls based service.
+        pub fn rustls(
+            self,
+            config: ServerConfig,
+        ) -> impl ServiceFactory<
+            TcpStream,
+            Config = (),
+            Response = (),
+            Error = TlsError<io::Error, DispatchError>,
+            InitError = (),
+        > {
+            Acceptor::new(config)
+                .map_init_err(|_| {
+                    unreachable!("TLS acceptor service factory does not error on init")
+                })
+                .map_err(TlsError::into_service_error)
+                .map(|io: TlsStream<TcpStream>| {
+                    let peer_addr = io.get_ref().0.peer_addr().ok();
+                    (io, peer_addr)
+                })
+                .and_then(self.map_err(TlsError::Service))
+        }
+    }
+}
+
+impl<T, S, B, X, U> H1Service<T, S, B, X, U>
+where
+    S: ServiceFactory<Request, Config = ()>,
+    S::Error: Into<Response<BoxBody>>,
+    S::Response: Into<Response<B>>,
+    S::InitError: fmt::Debug,
+    B: MessageBody,
+{
+    pub fn expect<X1>(self, expect: X1) -> H1Service<T, S, B, X1, U>
+    where
+        X1: ServiceFactory<Request, Response = Request>,
+        X1::Error: Into<Response<BoxBody>>,
+        X1::InitError: fmt::Debug,
+    {
+        H1Service {
+            expect,
+            cfg: self.cfg,
+            srv: self.srv,
+            upgrade: self.upgrade,
+            on_connect_ext: self.on_connect_ext,
+            _phantom: PhantomData,
+        }
+    }
+
+    pub fn upgrade<U1>(self, upgrade: Option<U1>) -> H1Service<T, S, B, X, U1>
+    where
+        U1: ServiceFactory<(Request, Framed<T, Codec>), Response = ()>,
+        U1::Error: fmt::Display,
+        U1::InitError: fmt::Debug,
+    {
+        H1Service {
+            upgrade,
+            cfg: self.cfg,
+            srv: self.srv,
+            expect: self.expect,
+            on_connect_ext: self.on_connect_ext,
+            _phantom: PhantomData,
+        }
+    }
+
+    /// Set on connect callback.
+    pub(crate) fn on_connect_ext(mut self, f: Option<Rc<ConnectCallback<T>>>) -> Self {
+        self.on_connect_ext = f;
+        self
+    }
+}
+
+impl<T, S, B, X, U> ServiceFactory<(T, Option<net::SocketAddr>)> for H1Service<T, S, B, X, U>
+where
+    T: AsyncRead + AsyncWrite + Unpin + 'static,
+
+    S: ServiceFactory<Request, Config = ()>,
+    S::Future: 'static,
+    S::Error: Into<Response<BoxBody>>,
+    S::Response: Into<Response<B>>,
+    S::InitError: fmt::Debug,
+
+    B: MessageBody,
+
+    X: ServiceFactory<Request, Config = (), Response = Request>,
+    X::Future: 'static,
+    X::Error: Into<Response<BoxBody>>,
+    X::InitError: fmt::Debug,
+
+    U: ServiceFactory<(Request, Framed<T, Codec>), Config = (), Response = ()>,
+    U::Future: 'static,
+    U::Error: fmt::Display + Into<Response<BoxBody>>,
+    U::InitError: fmt::Debug,
+{
+    type Response = ();
+    type Error = DispatchError;
+    type Config = ();
+    type Service = H1ServiceHandler<T, S::Service, B, X::Service, U::Service>;
+    type InitError = ();
+    type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
+
+    fn new_service(&self, _: ()) -> Self::Future {
+        let service = self.srv.new_service(());
+        let expect = self.expect.new_service(());
+        let upgrade = self.upgrade.as_ref().map(|s| s.new_service(()));
+        let on_connect_ext = self.on_connect_ext.clone();
+        let cfg = self.cfg.clone();
+
+        Box::pin(async move {
+            let expect = expect
+                .await
+                .map_err(|e| log::error!("Init http expect service error: {:?}", e))?;
+
+            let upgrade = match upgrade {
+                Some(upgrade) => {
+                    let upgrade = upgrade
+                        .await
+                        .map_err(|e| log::error!("Init http upgrade service error: {:?}", e))?;
+                    Some(upgrade)
+                }
+                None => None,
+            };
+
+            let service = service
+                .await
+                .map_err(|e| log::error!("Init http service error: {:?}", e))?;
+
+            Ok(H1ServiceHandler::new(
+                cfg,
+                service,
+                expect,
+                upgrade,
+                on_connect_ext,
+            ))
+        })
+    }
+}
+
+/// `Service` implementation for HTTP/1 transport
+pub type H1ServiceHandler<T, S, B, X, U> = HttpServiceHandler<T, S, B, X, U>;
+
+impl<T, S, B, X, U> Service<(T, Option<net::SocketAddr>)> for HttpServiceHandler<T, S, B, X, U>
+where
+    T: AsyncRead + AsyncWrite + Unpin,
+
+    S: Service<Request>,
+    S::Error: Into<Response<BoxBody>>,
+    S::Response: Into<Response<B>>,
+
+    B: MessageBody,
+
+    X: Service<Request, Response = Request>,
+    X::Error: Into<Response<BoxBody>>,
+
+    U: Service<(Request, Framed<T, Codec>), Response = ()>,
+    U::Error: fmt::Display + Into<Response<BoxBody>>,
+{
+    type Response = ();
+    type Error = DispatchError;
+    type Future = Dispatcher<T, S, B, X, U>;
+
+    fn poll_ready(&self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+        self._poll_ready(cx).map_err(|err| {
+            log::error!("HTTP/1 service readiness error: {:?}", err);
+            DispatchError::Service(err)
+        })
+    }
+
+    fn call(&self, (io, addr): (T, Option<net::SocketAddr>)) -> Self::Future {
+        let conn_data = OnConnectData::from_io(&io, self.on_connect_ext.as_deref());
+        Dispatcher::new(io, self.flow.clone(), self.cfg.clone(), addr, conn_data)
+    }
+}