chore: checkpoint before Python removal

vendor/httparse/.cargo-checksum.json

@@ -0,0 +1 @@
+{"files":{".cargo_vcs_info.json":"304c6a5cc4e924fef4ca4629de055fdf731825833e6a0764aa03e4581580297c",".github/FUNDING.yml":"e65635279e36972a4cecce26f3bb8115c09fd6d5d3e3e79d11a973877d4600a8",".github/workflows/ci.yml":"1045b35d3703f490e153c9a8513acf22496d5a3b0659fee70784c3cf425cb0f5",".github/workflows/cibench.yml":"3b09cf335f208b52d97ccb9a1ca803cece87c80a9b859b8236b9f4e25ab75456",".github/workflows/cifuzz.yml":"7814b157965db6452cba4ff3ebe30555c002daaff4baf46a985fa232cb768def","Cargo.lock":"ec51aecd295189c21ca216e1bb6e1f04e9f45d7dfc62da5c00480aebbf87a515","Cargo.toml":"067da5f6334526ce5f080909e5c271dd0968ab4198a65eea51d93b242febb48a","Cargo.toml.orig":"3a0da8a3d1c3ab896e16182c9a876b4ad4c265faa3042cde693621ea95c94060","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"391a5396cec6230bfabd4ef4eb2350eb895bc5efce377a2218f5702ed020d3e3","README.md":"eb23916ad2e4e904ee31e2af02e71ffd8f2d0c97f9e529f3e02f300a120e2c8b","benches/parse.rs":"1c76d3831410e0c2da0cbbee43431c2d28e2f1969664dea2a6a0e81f0a1c88be","build.rs":"eba8e341d746a6cf54249c62afe9eb237e7c21fcf9937223e894549e3a34d489","clippy.toml":"fd62dce2727b03fd4a8f6f3241e9da1e24ac2ff053d3986b0576c140823ec1ea","src/iter.rs":"630132d2d6fafa80c126b7b20b097c5ac7215575f7b61c8f8d7101b58ca57d0a","src/lib.rs":"a8307ce632f27b095cb84de27cfd8fc237977075d3eed41041f463c6afd9b757","src/macros.rs":"4e152282a120ec322f0873c65d2c334d7161f0085e91c52d45793c87f83e3e5c","src/simd/avx2.rs":"ce35db9ab9783880f44786a9d65727b0c5862a957d845e9f3d8a358b3ca4b01a","src/simd/mod.rs":"4fe941717937542c4c88eb95ffefb26db8492e4b5a1d46696fce0b5329702a21","src/simd/neon.rs":"fed66a5d37873dbf901ad2b69e9d08711c570a4a5fc958e13539808501ec9ac3","src/simd/runtime.rs":"fec921120b04042d9c3dbc78ced3477e112f16e4d06be68ac8d50ddce54b8da7","src/simd/sse42.rs":"04c1c6f29375eb87d0e7712deadd9ba3c94d20525b67ff869a266cc6b75cedf6","src/simd/swar.rs":"24d15cfaa7b1ac8f2a5ff74a590eb0e9f0c87de6058c2c65919e33f9f1923080","tests/uri.rs":"62664aa2db82b2b24174ef74b7b00b675806608bfcb64763f97b639b62dd3701"},"package":"6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87"}

vendor/httparse/.cargo_vcs_info.json

@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "9f29e79f9832dbd0ae5220acb17c1866745bdecd"
+  },
+  "path_in_vcs": ""
+}

vendor/httparse/.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [seanmonstar]

vendor/httparse/.github/workflows/ci.yml

@@ -0,0 +1,281 @@
+name: CI
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+env:
+  RUST_BACKTRACE: 1
+
+jobs:
+  ci-pass:
+    name: CI is green
+    runs-on: ubuntu-latest
+    needs:
+      - test
+      - simd
+      - check_x86
+      - aarch64
+      - msrv_x64
+      - msrv_aarch64
+      - miri
+      - clippy_check
+    steps:
+      - run: exit 0
+
+  test:
+    name: Test ${{ matrix.rust }} on ${{ matrix.os }}
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macOS-latest
+
+        include:
+          - rust: nightly
+            benches: true
+
+    runs-on: ${{ matrix.os }}
+    env:
+      CARGO_CFG_HTTPARSE_DISABLE_SIMD: 1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Install Rust (${{ matrix.rust }})
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: no_std
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --no-default-features
+
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - name: Test all benches
+        if: matrix.benches
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --benches
+
+  simd:
+    name: SIMD ${{ matrix.target_feature }} on ${{ matrix.rust }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - beta
+          - nightly
+
+        target_feature:
+          - "+sse4.2"
+          - "+avx2"
+          - "+sse4.2,+avx2"
+
+        disable_compiletime:
+          - 0
+          - 1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Install Rust (${{ matrix.rust }})
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+        env:
+          RUSTFLAGS: -C target_feature=${{ matrix.target_feature }}
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD_COMPILETIME: ${{ matrix.disable_compiletime }}
+
+  check_x86:
+    name: check x86
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          target: i686-unknown-linux-musl
+
+      - name: Test without SIMD
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target i686-unknown-linux-musl
+        env:
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD_COMPILETIME: 1
+
+      - name: Test
+
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target i686-unknown-linux-musl
+
+  msrv_x64:
+    name: msrv (x64)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: 1.47.0
+          override: true
+
+      # Only build, dev-dependencies don't compile on 1.47.0
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+  # This tests that aarch64 gracefully fallbacks to SWAR if neon_intrinsics aren't available (<1.59)
+  msrv_aarch64:
+    name: msrv (aarch64)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Install cross-compiling dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: 1.47.0
+          override: true
+          target: aarch64-unknown-linux-gnu
+
+      # Only build, dev-dependencies don't compile on 1.47.0
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --target aarch64-unknown-linux-gnu
+
+  clippy_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run clippy
+        run: cargo clippy --all-targets --all-features
+
+  miri:
+    name: Test with Miri
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          components: miri
+          override: true
+
+      - name: Test
+        run: cargo miri test
+  #
+  # mirai:
+  #   name: MIRAI static analysis
+  #   runs-on: ubuntu-latest
+  #
+  #   steps:
+  #     - name: Checkout
+  #       uses: actions/checkout@v1
+  #
+  #     - name: Install Rust
+  #       uses: actions-rs/toolchain@v1
+  #       with:
+  #         profile: minimal
+  #         toolchain: nightly-2023-05-09
+  #         components: clippy, rustfmt, rustc-dev, rust-src, rust-std, llvm-tools-preview
+  #         override: true
+  #
+  #     - name: install mirai
+  #       run: cargo install --locked --git https://github.com/facebookexperimental/MIRAI/ mirai
+  #       env:
+  #         # MIRAI_FLAGS: --diag=(default|verify|library|paranoid)
+  #         MIRAI_FLAGS: --diag=default
+  #
+  #     - name: cargo mirai
+  #       run: cargo mirai --lib
+
+  aarch64:
+    name: Test aarch64 (neon)
+    runs-on: ubuntu-latest
+    env:
+      CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          target: aarch64-unknown-linux-gnu
+
+      - name: Install QEMU and dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y qemu-user gcc-aarch64-linux-gnu
+
+      - name: Build tests
+        run: cargo build --tests --target aarch64-unknown-linux-gnu
+
+      - name: Run tests with QEMU
+        run: |
+          test_binaries=$(find target/aarch64-unknown-linux-gnu/debug/deps/ -type f -executable -name 'httparse-*')
+          if [ -n "$test_binaries" ]; then
+            for test_binary in $test_binaries
+            do
+              echo "Running tests in ${test_binary}"
+              /usr/bin/qemu-aarch64 -L /usr/aarch64-linux-gnu/ "${test_binary}"
+            done
+          else
+            echo "No test binaries found."
+          fi

vendor/httparse/.github/workflows/cibench.yml

@@ -0,0 +1,123 @@
+name: CI Benchmarks
+on:
+  pull_request:
+    branches: [master]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: "-C target-cpu=native"
+
+jobs:
+  benchmark:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse -- --save-baseline master
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse -- --save-baseline pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}
+
+      - name: Compare benchmarks
+        run: |
+          critcmp -t 5 master pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}
+
+  benchmark-x64:
+    name: Run x64 benchmarks
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        feature: [swar, sse42, avx2]
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse -- --save-baseline master-${{ matrix.feature }}
+        env:
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD: ${{ matrix.feature == 'swar' && '1' || '0' }}
+          RUSTFLAGS: ${{ matrix.feature != 'swar' && format('-C target-feature=+{0}', matrix.feature) || '' }}
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse -- --save-baseline pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}-${{ matrix.feature }}
+        env:
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD: ${{ matrix.feature == 'swar' && '1' || '0' }}
+          RUSTFLAGS: ${{ matrix.feature != 'swar' && format('-C target-feature=+{0}', matrix.feature) || '' }}
+
+      - name: Compare benchmarks
+        run: |
+          critcmp -t 5 master-${{ matrix.feature }} pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}-${{ matrix.feature }}
+
+  benchmark-aarch64:
+    name: Run aarch64 benchmarks
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        feature: [swar, neon]
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse -- --save-baseline master-aarch64-${{ matrix.feature }}
+        env:
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD: ${{ matrix.feature == 'swar' && '1' || '0' }}
+          RUSTFLAGS: ${{ matrix.feature == 'neon' && '-C target-feature=+neon' || '' }}
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse -- --save-baseline pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}-aarch64-${{ matrix.feature }}
+        env:
+          CARGO_CFG_HTTPARSE_DISABLE_SIMD: ${{ matrix.feature == 'swar' && '1' || '0' }}
+          RUSTFLAGS: ${{ matrix.feature == 'neon' && '-C target-feature=+neon' || '' }}
+
+      - name: Compare benchmarks
+        run: |
+          critcmp -t 5 master-aarch64-${{ matrix.feature }} pr-${{ github.event.pull_request.number }}-${{ github.event.pull_request.head.sha }}-aarch64-${{ matrix.feature }}

vendor/httparse/.github/workflows/cifuzz.yml

@@ -0,0 +1,26 @@
+name: CIFuzz
+on: [pull_request]
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Build Fuzzers
+      id: build
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'httparse'
+        dry-run: false
+        language: rust
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'httparse'
+        fuzz-seconds: 300
+        dry-run: false
+        language: rust
+    - name: Upload Crash
+      uses: actions/upload-artifact@v4
+      if: failure() && steps.build.outcome == 'success'
+      with:
+        name: artifacts
+        path: ./out/artifacts

vendor/httparse/Cargo.lock

@@ -0,0 +1,688 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "bstr"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
+dependencies = [
+ "lazy_static",
+ "memchr",
+ "regex-automata",
+ "serde",
+]
+
+[[package]]
+name = "bumpalo"
+version = "3.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37ccbd214614c6783386c1af30caf03192f17891059cecc394b4fb119e363de3"
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
+[[package]]
+name = "cast"
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+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "clap"
+version = "2.34.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
+dependencies = [
+ "bitflags",
+ "textwrap",
+ "unicode-width",
+]
+
+[[package]]
+name = "criterion"
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+dependencies = [
+ "atty",
+ "cast",
+ "clap",
+ "criterion-plot",
+ "csv",
+ "itertools",
+ "lazy_static",
+ "num-traits",
+ "oorandom",
+ "plotters",
+ "rayon",
+ "regex",
+ "serde",
+ "serde_cbor",
+ "serde_derive",
+ "serde_json",
+ "tinytemplate",
+ "walkdir",
+]
+
+[[package]]
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+dependencies = [
+ "cast",
+ "itertools",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-deque"
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+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
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+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "crossbeam-utils",
+ "memoffset",
+ "once_cell",
+ "scopeguard",
+]
+
+[[package]]
+name = "crossbeam-utils"
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+]
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+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
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+name = "httparse"
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+autoexamples = false
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+description = "A tiny, safe, speedy, zero-copy HTTP/1.x parser."
+documentation = "https://docs.rs/httparse"
+readme = "README.md"
+keywords = [
+    "http",
+    "parser",
+    "no_std",
+]
+categories = [
+    "network-programming",
+    "no-std",
+    "parser-implementations",
+    "web-programming",
+]
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+repository = "https://github.com/seanmonstar/httparse"
+
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+
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+
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+    "cfg(httparse_simd_neon_intrinsics)",
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+
+[profile.bench]
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vendor/httparse/LICENSE-APACHE

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+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
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vendor/httparse/LICENSE-MIT

@@ -0,0 +1,20 @@
+Copyright (c) 2015-2025 Sean McArthur
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

vendor/httparse/README.md

@@ -0,0 +1,43 @@
+# httparse
+
+[![crates.io](https://img.shields.io/crates/v/httparse.svg)](https://crates.io/crates/httparse)
+[![Released API docs](https://docs.rs/httparse/badge.svg)](https://docs.rs/httparse)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE-MIT)
+[![CI](https://github.com/seanmonstar/httparse/workflows/CI/badge.svg)](https://github.com/seanmonstar/httparse/actions?query=workflow%3ACI)
+[![Discord chat][discord-badge]][discord-url]
+
+A push parser for the HTTP 1.x protocol. Avoids allocations. No copy. **Fast.**
+
+Works with `no_std`, simply disable the `std` Cargo feature.
+
+[Changelog](https://github.com/seanmonstar/httparse/releases)
+
+
+[discord-badge]: https://img.shields.io/discord/500028886025895936.svg?logo=discord
+[discord-url]: https://discord.gg/kkwpueZ
+
+## Usage
+
+```rust
+let mut headers = [httparse::EMPTY_HEADER; 64];
+let mut req = httparse::Request::new(&mut headers);
+
+let buf = b"GET /index.html HTTP/1.1\r\nHost";
+assert!(req.parse(buf)?.is_partial());
+
+// a partial request, so we try again once we have more data
+
+let buf = b"GET /index.html HTTP/1.1\r\nHost: example.domain\r\n\r\n";
+assert!(req.parse(buf)?.is_complete());
+```
+
+## License
+
+Licensed under either of
+
+- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or https://apache.org/licenses/LICENSE-2.0)
+- MIT license ([LICENSE-MIT](LICENSE-MIT) or https://opensource.org/licenses/MIT)
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

vendor/httparse/benches/parse.rs

@@ -0,0 +1,242 @@
+use std::time::Duration;
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion, Throughput, BatchSize};
+
+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";
+
+fn req(c: &mut Criterion) {
+    c.benchmark_group("req")
+        .throughput(Throughput::Bytes(REQ.len() as u64))
+        .bench_function("req", |b| b.iter_batched_ref(|| {
+            [httparse::Header {
+                name: "",
+                value: &[],
+            }; 16]
+        },|headers| {
+            let mut req = httparse::Request::new(headers);
+            assert_eq!(
+                black_box(req.parse(REQ).unwrap()),
+                httparse::Status::Complete(REQ.len())
+            );
+        }, BatchSize::SmallInput));
+}
+
+fn req_short(c: &mut Criterion) {
+    c.benchmark_group("req_short")
+        .throughput(Throughput::Bytes(REQ_SHORT.len() as u64))
+        .bench_function("req_short", |b| b.iter_batched_ref(|| {
+            [httparse::Header {
+                name: "",
+                value: &[],
+            }; 16]
+        },|headers| {
+            let mut req = httparse::Request::new(headers);
+            assert_eq!(
+                req.parse(black_box(REQ_SHORT)).unwrap(),
+                httparse::Status::Complete(REQ_SHORT.len())
+            );
+        }, BatchSize::SmallInput));
+}
+
+const RESP_SHORT: &[u8] = b"\
+HTTP/1.0 200 OK\r\n\
+Date: Wed, 21 Oct 2015 07:28:00 GMT\r\n\
+Set-Cookie: session=60; user_id=1\r\n\r\n";
+
+// These particular headers don't all make semantic sense for a response, but they're syntactically valid.
+const RESP: &[u8] = b"\
+HTTP/1.1 200 OK\r\n\
+Date: Wed, 21 Oct 2015 07:28:00 GMT\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";
+
+fn resp(c: &mut Criterion) {
+    c.benchmark_group("resp")
+        .throughput(Throughput::Bytes(RESP.len() as u64))
+        .bench_function("resp", |b| b.iter_batched_ref(|| {
+            [httparse::Header {
+                name: "",
+                value: &[],
+            }; 16]
+        }, |headers| {
+            let mut resp = httparse::Response::new(headers);
+            assert_eq!(
+                resp.parse(black_box(RESP)).unwrap(),
+                httparse::Status::Complete(RESP.len())
+            );
+        }, BatchSize::SmallInput));
+}
+
+fn resp_short(c: &mut Criterion) {
+    c.benchmark_group("resp_short")
+        .throughput(Throughput::Bytes(RESP_SHORT.len() as u64))
+        .bench_function("resp_short", |b| b.iter_batched_ref(|| {
+            [httparse::Header {
+                name: "",
+                value: &[],
+            }; 16]
+        },
+        |headers| {
+            let mut resp = httparse::Response::new(headers);
+            assert_eq!(
+                resp.parse(black_box(RESP_SHORT)).unwrap(),
+                httparse::Status::Complete(RESP_SHORT.len())
+            );
+        }, BatchSize::SmallInput));
+}
+
+fn uri(c: &mut Criterion) {
+    fn _uri(c: &mut Criterion, name: &str, input: &'static [u8]) {
+        c.benchmark_group("uri")
+        .throughput(Throughput::Bytes(input.len() as u64))
+        .bench_function(name, |b| b.iter(|| {
+            let mut b = httparse::_benchable::Bytes::new(black_box(input));
+            httparse::_benchable::parse_uri(&mut b).unwrap()
+        }));
+    }
+
+    const S: &[u8] = b" ";
+    const CHUNK64: &[u8] = b"/wp-content/uploads/2022/08/31/hello-kitty-darth-vader-pink.webp";
+    let chunk_4k = CHUNK64.repeat(64);
+
+    // 1b to 4096b
+    for p in 0..=12 {
+        let n = 1 << p;
+        _uri(c, &format!("uri_{:04}b", n), [chunk_4k[..n].to_vec(), S.into()].concat().leak());
+    }
+}
+
+fn header(c: &mut Criterion) {
+    fn _header(c: &mut Criterion, name: &str, input: &'static [u8]) {
+        c.benchmark_group("header")
+        .throughput(Throughput::Bytes(input.len() as u64))
+        .bench_function(name, |b| b.iter_batched_ref(|| [httparse::EMPTY_HEADER; 128],|headers| {
+            let status = httparse::parse_headers(black_box(input), headers).unwrap();
+            black_box(status.unwrap()).0
+        }, BatchSize::SmallInput));
+    }
+
+    const RN: &[u8] = b"\r\n";
+    const RNRN: &[u8] = b"\r\n\r\n";
+    const TINY_RN: &[u8] = b"a: b\r\n"; // minimal header line
+    const XFOOBAR: &[u8] = b"X-Foobar";
+    let xfoobar_4k = XFOOBAR.repeat(4096/XFOOBAR.len());
+
+    // header names 1b to 4096b
+    for p in 0..=12 {
+        let n = 1 << p;
+        let payload = [&xfoobar_4k[..n], b": b", RNRN].concat().leak();
+        _header(c, &format!("name_{:04}b", n), payload);
+    }
+
+    // header values 1b to 4096b
+    for p in 0..=12 {
+        let n = 1 << p;
+        let payload = [b"a: ", &xfoobar_4k[..n], RNRN].concat().leak();
+        _header(c, &format!("value_{:04}b", n), payload);
+    }
+
+    // 1 to 128
+    for p in 0..=7 {
+        let n = 1 << p;
+        _header(c, &format!("count_{:03}", n), [TINY_RN.repeat(n), RN.into()].concat().leak());
+    }
+}
+
+fn version(c: &mut Criterion) {
+    fn _version(c: &mut Criterion, name: &str, input: &'static [u8]) {
+        c.benchmark_group("version")
+        .throughput(Throughput::Bytes(input.len() as u64))
+        .bench_function(name, |b| b.iter(|| {
+            let mut b = httparse::_benchable::Bytes::new(black_box(input));
+            httparse::_benchable::parse_version(&mut b).unwrap()
+        }));
+    }
+
+    _version(c, "http10", b"HTTP/1.0\r\n");
+    _version(c, "http11", b"HTTP/1.1\r\n");
+    _version(c, "partial", b"HTTP/1.");
+}
+
+fn method(c: &mut Criterion) {
+    fn _method(c: &mut Criterion, name: &str, input: &[u8]) {
+        c.benchmark_group("method")
+        .throughput(Throughput::Bytes(input.len() as u64))
+        .bench_function(name, |b| b.iter(|| {
+            let mut b = httparse::_benchable::Bytes::new(black_box(input));
+            httparse::_benchable::parse_method(&mut b).unwrap()
+        }));
+    }
+
+    // Common methods should be fast-pathed
+    const COMMON_METHODS: &[&str] = &["GET", "HEAD", "POST", "PUT", "DELETE", "CONNECT", "OPTIONS", "TRACE", "PATCH"];
+    for method in COMMON_METHODS {
+        _method(c, &method.to_lowercase(), format!("{} / HTTP/1.1\r\n", method).as_bytes());
+    }
+    // Custom methods should be infrequent and thus not worth optimizing
+    _method(c, "custom", b"CUSTOM / HTTP/1.1\r\n");
+    _method(c, "w3!rd", b"w3!rd / HTTP/1.1\r\n");
+}
+
+fn many_requests(c: &mut Criterion) {
+    use rand::{rngs::StdRng, seq::SliceRandom, SeedableRng};
+    let mut requests = [
+        ("GET", 500),
+        ("POST", 300),
+        ("OPTIONS", 100),
+        ("HEAD", 50),
+        ("w3!r`d", 20),
+    ]
+    .iter()
+    .flat_map(|&(method, count)| std::iter::repeat(method).take(count))
+    .map(|method| format!("{method} / HTTP/1.1\r\n\r\n"))
+    .collect::<Vec<_>>();
+    SliceRandom::shuffle(&mut *requests, &mut StdRng::seed_from_u64(0));
+
+    let total_bytes: usize = requests.iter().map(String::len).sum();
+
+    c.benchmark_group("many_requests")
+        .throughput(Throughput::Bytes(total_bytes as u64))
+        .measurement_time(Duration::from_secs(1))
+        .sample_size(1000)
+        .bench_function("_", |b| {
+            b.iter(|| {
+                requests.iter().for_each(|req| {
+                    let mut b = httparse::_benchable::Bytes::new(black_box(req.as_bytes()));
+                    httparse::_benchable::parse_method(&mut b).unwrap();
+                });
+            })
+        });
+}
+
+const WARMUP: Duration = Duration::from_millis(100);
+const MTIME: Duration = Duration::from_millis(100);
+const SAMPLES: usize = 200;
+criterion_group!{
+    name = benches;
+    config = Criterion::default().sample_size(SAMPLES).warm_up_time(WARMUP).measurement_time(MTIME);
+    targets = req, req_short, resp, resp_short, uri, header, version, method, many_requests
+}
+criterion_main!(benches);

vendor/httparse/build.rs

@@ -0,0 +1,133 @@
+use std::env;
+use std::ffi::OsString;
+use std::process::Command;
+
+fn main() {
+    // We check rustc version to enable features beyond MSRV, such as:
+    // - 1.59 => neon_intrinsics
+    let rustc = env::var_os("RUSTC").unwrap_or(OsString::from("rustc"));
+    let output = Command::new(rustc)
+        .arg("--version")
+        .output()
+        .expect("failed to check 'rustc --version'")
+        .stdout;
+
+    let raw_version = String::from_utf8(output)
+        .expect("rustc version output should be utf-8");
+    
+    let version = match Version::parse(&raw_version) {
+        Ok(version) => version,
+        Err(err) => {
+            println!("cargo:warning=failed to parse `rustc --version`: {}", err);
+            return;
+        }
+    };
+
+    enable_new_features(version);
+}
+
+fn enable_new_features(version: Version) {
+    enable_simd(version);
+}
+
+fn enable_simd(version: Version) {
+    if env::var_os("CARGO_FEATURE_STD").is_none() {
+        println!("cargo:warning=building for no_std disables httparse SIMD");
+        return;
+    }
+    if env::var_os("CARGO_CFG_MIRI").is_some() {
+        println!("cargo:warning=building for Miri disables httparse SIMD");
+        return;
+    }
+
+    let env_disable = "CARGO_CFG_HTTPARSE_DISABLE_SIMD";
+    if var_is(env_disable, "1") {
+        println!("cargo:warning=detected {} environment variable, disabling SIMD", env_disable);
+        return;
+    }
+
+    // 1.59.0 is the first version to support neon_intrinsics
+    if version >= Version(1, 59, 0) {
+        println!("cargo:rustc-cfg=httparse_simd_neon_intrinsics");
+    }
+
+    println!("cargo:rustc-cfg=httparse_simd");
+
+    // cfg(target_feature) isn't stable yet, but CARGO_CFG_TARGET_FEATURE has
+    // a list... We aren't doing anything unsafe, since the is_x86_feature_detected
+    // macro still checks in the actual lib, BUT!
+    //
+    // By peeking at the list here, we can change up slightly how we do feature
+    // detection in the lib. If our features aren't in the feature list, we
+    // stick with a cached runtime detection strategy.
+    //
+    // But if the features *are* in the list, we benefit from removing our cache,
+    // since the compiler will eliminate several branches with its internal
+    // cfg(target_feature) usage.
+
+
+    let env_runtime_only = "CARGO_CFG_HTTPARSE_DISABLE_SIMD_COMPILETIME";
+    if var_is(env_runtime_only, "1") {
+        println!("cargo:warning=detected {} environment variable, using runtime SIMD detection only", env_runtime_only);
+        return;
+    }
+    let feature_list = match env::var_os("CARGO_CFG_TARGET_FEATURE") {
+        Some(var) => match var.into_string() {
+            Ok(s) => s,
+            Err(_) => {
+                println!("cargo:warning=CARGO_CFG_TARGET_FEATURE was not valid utf-8");
+                return;
+            },
+        },
+        None => {
+            println!("cargo:warning=CARGO_CFG_TARGET_FEATURE was not set");
+            return
+        },
+    };
+    
+    let features = feature_list.split(',').map(|s| s.trim());
+    if features.clone().any(|f| f == "sse4.2") {
+        println!("cargo:rustc-cfg=httparse_simd_target_feature_sse42");
+    }
+    if features.clone().any(|f| f == "avx2") {
+        println!("cargo:rustc-cfg=httparse_simd_target_feature_avx2");
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, PartialOrd)]
+struct Version (u32, u32, u32);
+
+impl Version {
+    fn parse(s: &str) -> Result<Version, String> {
+        if !s.starts_with("rustc ") {
+            return Err(format!("unrecognized version string: {}", s));
+        }
+        let s = s.trim_start_matches("rustc ");
+        
+        let mut iter = s
+            .split('.')
+            .take(3)
+            .map(|s| match s.find(|c: char| !c.is_ascii_digit()) {
+                Some(end) => &s[..end],
+                None => s,
+            })
+            .map(|s| s.parse::<u32>().map_err(|e| e.to_string()));
+    
+        if iter.clone().count() != 3 {
+            return Err(format!("not enough version parts: {:?}", s));
+        }
+        
+        let major = iter.next().unwrap()?;
+        let minor = iter.next().unwrap()?;
+        let patch = iter.next().unwrap()?;
+
+        Ok(Version(major, minor, patch))
+    }
+}
+
+fn var_is(key: &str, val: &str) -> bool {
+    match env::var(key) {
+        Ok(v) => v == val,
+        Err(_) => false,
+    }
+}

vendor/httparse/clippy.toml

@@ -0,0 +1 @@
+msrv = "1.47"

vendor/httparse/src/iter.rs

@@ -0,0 +1,199 @@
+use core::convert::TryFrom;
+use core::convert::TryInto;
+
+#[allow(missing_docs)]
+pub struct Bytes<'a> {
+    start: *const u8,
+    end: *const u8,
+    /// INVARIANT: start <= cursor && cursor <= end
+    cursor: *const u8,
+    phantom: core::marker::PhantomData<&'a ()>,
+}
+
+#[allow(missing_docs)]
+impl<'a> Bytes<'a> {
+    #[inline]
+    pub fn new(slice: &'a [u8]) -> Bytes<'a> {
+        let start = slice.as_ptr();
+        // SAFETY: obtain pointer to slice end; start points to slice start.
+        let end = unsafe { start.add(slice.len()) };
+        let cursor = start;
+        Bytes {
+            start,
+            end,
+            cursor,
+            phantom: core::marker::PhantomData,
+        }
+    }
+
+    #[inline]
+    pub fn pos(&self) -> usize {
+        self.cursor as usize - self.start as usize
+    }
+
+    #[inline]
+    pub fn peek(&self) -> Option<u8> {
+        if self.cursor < self.end {
+            // SAFETY:  bounds checked
+            Some(unsafe { *self.cursor })
+        } else {
+            None
+        }
+    }
+
+    /// Peek at byte `n` ahead of cursor
+    ///
+    /// # Safety
+    ///
+    /// Caller must ensure that `n <= self.len()`, otherwise `self.cursor.add(n)` is UB.
+    /// That means there are at least `n-1` bytes between `self.cursor` and `self.end`
+    /// and `self.cursor.add(n)` is either `self.end` or points to a valid byte.
+    #[inline]
+    pub unsafe fn peek_ahead(&self, n: usize) -> Option<u8> {
+        debug_assert!(n <= self.len());
+        // SAFETY: by preconditions
+        let p = unsafe { self.cursor.add(n) };
+        if p < self.end {
+            // SAFETY: by preconditions, if this is not `self.end`,
+            // then it is safe to dereference
+            Some(unsafe { *p })
+        } else {
+            None
+        }
+    }
+
+    #[inline]
+    pub fn peek_n<'b: 'a, U: TryFrom<&'a [u8]>>(&'b self, n: usize) -> Option<U> {
+        // TODO: once we bump MSRC, use const generics to allow only [u8; N] reads
+        // TODO: drop `n` arg in favour of const
+        // let n = core::mem::size_of::<U>();
+        self.as_ref().get(..n)?.try_into().ok()
+    }
+
+    /// Advance by 1, equivalent to calling `advance(1)`.
+    ///
+    /// # Safety
+    ///
+    /// Caller must ensure that Bytes hasn't been advanced/bumped by more than [`Bytes::len()`].
+    #[inline]
+    pub unsafe fn bump(&mut self) {
+        self.advance(1)
+    }
+
+    /// Advance cursor by `n`
+    ///
+    /// # Safety
+    ///
+    /// Caller must ensure that Bytes hasn't been advanced/bumped by more than [`Bytes::len()`].
+    #[inline]
+    pub unsafe fn advance(&mut self, n: usize) {
+        self.cursor = self.cursor.add(n);
+        debug_assert!(self.cursor <= self.end, "overflow");
+    }
+
+    #[inline]
+    pub fn len(&self) -> usize {
+        self.end as usize - self.cursor as usize
+    }
+
+    #[inline]
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+
+    #[inline]
+    pub fn slice(&mut self) -> &'a [u8] {
+        // SAFETY: not moving position at all, so it's safe
+        let slice = unsafe { slice_from_ptr_range(self.start, self.cursor) };
+        self.commit();
+        slice
+    }
+
+    // TODO: this is an anti-pattern, should be removed
+    /// Deprecated. Do not use!
+    /// # Safety
+    ///
+    /// Caller must ensure that `skip` is at most the number of advances (i.e., `bytes.advance(3)`
+    /// implies a skip of at most 3).
+    #[inline]
+    pub unsafe fn slice_skip(&mut self, skip: usize) -> &'a [u8] {
+        debug_assert!(skip <= self.cursor.offset_from(self.start) as usize);
+        let head = slice_from_ptr_range(self.start, self.cursor.sub(skip));
+        self.commit();
+        head
+    }
+
+    #[inline]
+    pub fn commit(&mut self) {
+        self.start = self.cursor
+    }
+
+    /// # Safety
+    ///
+    /// see [`Bytes::advance`] safety comment.
+    #[inline]
+    pub unsafe fn advance_and_commit(&mut self, n: usize) {
+        self.advance(n);
+        self.commit();
+    }
+
+    #[inline]
+    pub fn as_ptr(&self) -> *const u8 {
+        self.cursor
+    }
+
+    #[inline]
+    pub fn start(&self) -> *const u8 {
+        self.start
+    }
+
+    #[inline]
+    pub fn end(&self) -> *const u8 {
+        self.end
+    }
+
+    /// # Safety
+    ///
+    /// Must ensure invariant `bytes.start() <= ptr && ptr <= bytes.end()`.
+    #[inline]
+    pub unsafe fn set_cursor(&mut self, ptr: *const u8) {
+        debug_assert!(ptr >= self.start);
+        debug_assert!(ptr <= self.end);
+        self.cursor = ptr;
+    }
+}
+
+impl AsRef<[u8]> for Bytes<'_> {
+    #[inline]
+    fn as_ref(&self) -> &[u8] {
+        // SAFETY: not moving position at all, so it's safe
+        unsafe { slice_from_ptr_range(self.cursor, self.end) }
+    }
+}
+
+/// # Safety
+///
+/// Must ensure start and end point to the same memory object to uphold memory safety.
+#[inline]
+unsafe fn slice_from_ptr_range<'a>(start: *const u8, end: *const u8) -> &'a [u8] {
+    debug_assert!(start <= end);
+    core::slice::from_raw_parts(start, end as usize - start as usize)
+}
+
+impl Iterator for Bytes<'_> {
+    type Item = u8;
+
+    #[inline]
+    fn next(&mut self) -> Option<u8> {
+        if self.cursor < self.end {
+            // SAFETY: bounds checked dereference
+            unsafe {
+                let b = *self.cursor;
+                self.bump();
+                Some(b)
+            }
+        } else {
+            None
+        }
+    }
+}

vendor/httparse/src/macros.rs

@@ -0,0 +1,68 @@
+//! Utility macros
+
+macro_rules! next {
+    ($bytes:ident) => ({
+        match $bytes.next() {
+            Some(b) => b,
+            None => return Ok(Status::Partial)
+        }
+    })
+}
+
+macro_rules! expect {
+    ($bytes:ident.next() == $pat:pat => $ret:expr) => {
+        expect!(next!($bytes) => $pat |? $ret)
+    };
+    ($e:expr => $pat:pat |? $ret:expr) => {
+        match $e {
+            v@$pat => v,
+            _ => return $ret
+        }
+    };
+}
+
+macro_rules! complete {
+    ($e:expr) => {
+        match $e? {
+            Status::Complete(v) => v,
+            Status::Partial => return Ok(Status::Partial)
+        }
+    }
+}
+
+macro_rules! byte_map {
+    ($($p:pat)|+) => {{
+        const fn make_map() -> [bool; 256] {
+            let mut ret = [false; 256];
+            let mut i = 0;
+            while i < 256 {
+                ret[i] = matches!(i as u8, $($p)|+);
+                i += 1;
+            }
+            ret
+        }
+        make_map()
+    }}
+}
+
+macro_rules! space {
+    ($bytes:ident or $err:expr) => ({
+        expect!($bytes.next() == b' ' => Err($err));
+        $bytes.slice();
+    })
+}
+
+macro_rules! newline {
+    ($bytes:ident) => ({
+        match next!($bytes) {
+            b'\r' => {
+                expect!($bytes.next() == b'\n' => Err(Error::NewLine));
+                $bytes.slice();
+            },
+            b'\n' => {
+                $bytes.slice();
+            },
+            _ => return Err(Error::NewLine)
+        }
+    })
+}

vendor/httparse/src/simd/avx2.rs

@@ -0,0 +1,206 @@
+use crate::iter::Bytes;
+
+#[inline]
+#[target_feature(enable = "avx2")]
+pub unsafe fn match_uri_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 32 {
+
+        let advance = match_url_char_32_avx(bytes.as_ref());
+
+        bytes.advance(advance);
+
+        if advance != 32 {
+            return;
+        }
+    }
+    // NOTE: use SWAR for <32B, more efficient than falling back to SSE4.2
+    super::swar::match_uri_vectored(bytes)
+}
+
+#[inline(always)]
+#[allow(non_snake_case, overflowing_literals)]
+#[allow(unused)]
+unsafe fn match_url_char_32_avx(buf: &[u8]) -> usize {
+    // NOTE: This check might be not necessary since this function is only used in
+    // `match_uri_vectored` where buffer overflow is taken care of.
+    debug_assert!(buf.len() >= 32);
+
+    #[cfg(target_arch = "x86")]
+    use core::arch::x86::*;
+    #[cfg(target_arch = "x86_64")]
+    use core::arch::x86_64::*;
+
+    // pointer to buffer
+    let ptr = buf.as_ptr();
+
+    // %x21-%x7e %x80-%xff
+    //
+    // Character ranges allowed by this function, can also be interpreted as:
+    // 33 =< (x != 127) =< 255
+    //
+    // Create a vector full of DEL (0x7f) characters.
+    let DEL: __m256i = _mm256_set1_epi8(0x7f);
+    // Create a vector full of exclamation mark (!) (0x21) characters.
+    // Used as lower threshold, characters in URLs cannot be smaller than this.
+    let LOW: __m256i = _mm256_set1_epi8(0x21);
+
+    // Load a chunk of 32 bytes from `ptr` as a vector.
+    // We can check 32 bytes in parallel at most with AVX2 since
+    // YMM registers can only have 256 bits most.
+    let dat = _mm256_lddqu_si256(ptr as *const _);
+
+    // unsigned comparison dat >= LOW
+    //
+    // `_mm256_max_epu8` creates a new vector by comparing vectors `dat` and `LOW`
+    // and picks the max. values from each for all indices.
+    // So if a byte in `dat` is <= 32, it'll be represented as 33
+    // which is the smallest valid character.
+    //
+    // Then, we compare the new vector with `dat` for equality.
+    //
+    // `_mm256_cmpeq_epi8` returns a new vector where;
+    // * matching bytes are set to 0xFF (all bits set),
+    // * nonmatching bytes are set to 0 (no bits set).
+    let low = _mm256_cmpeq_epi8(_mm256_max_epu8(dat, LOW), dat);
+    // Similar to what we did before, but now invalid characters are set to 0xFF.
+    let del = _mm256_cmpeq_epi8(dat, DEL);
+
+    // We glue the both comparisons via `_mm256_andnot_si256`.
+    //
+    // Since the representation of truthiness differ in these comparisons,
+    // we are in need of bitwise NOT to convert valid characters of `del`.
+    let bit = _mm256_andnot_si256(del, low);
+    // This creates a bitmask from the most significant bit of each byte.
+    // Simply, we're converting a vector value to scalar value here.
+    let res = _mm256_movemask_epi8(bit) as u32;
+
+    // Count trailing zeros to find the first encountered invalid character.
+    // Bitwise NOT is required once again to flip truthiness.
+    // TODO: use .trailing_ones() once MSRV >= 1.46
+    (!res).trailing_zeros() as usize
+}
+
+#[target_feature(enable = "avx2")]
+pub unsafe fn match_header_value_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 32 {
+        let advance = match_header_value_char_32_avx(bytes.as_ref());
+        bytes.advance(advance);
+
+        if advance != 32 {
+            return;
+        }
+    }
+    // NOTE: use SWAR for <32B, more efficient than falling back to SSE4.2
+    super::swar::match_header_value_vectored(bytes)
+}
+
+#[inline(always)]
+#[allow(non_snake_case)]
+#[allow(unused)]
+unsafe fn match_header_value_char_32_avx(buf: &[u8]) -> usize {
+    debug_assert!(buf.len() >= 32);
+
+    #[cfg(target_arch = "x86")]
+    use core::arch::x86::*;
+    #[cfg(target_arch = "x86_64")]
+    use core::arch::x86_64::*;
+
+    let ptr = buf.as_ptr();
+
+    // %x09 %x20-%x7e %x80-%xff
+    // Create a vector full of horizontal tab (\t) (0x09) characters.
+    let TAB: __m256i = _mm256_set1_epi8(0x09);
+    // Create a vector full of DEL (0x7f) characters.
+    let DEL: __m256i = _mm256_set1_epi8(0x7f);
+    // Create a vector full of space (0x20) characters.
+    let LOW: __m256i = _mm256_set1_epi8(0x20);
+
+    // Load a chunk of 32 bytes from `ptr` as a vector.
+    let dat = _mm256_lddqu_si256(ptr as *const _);
+
+    // unsigned comparison dat >= LOW
+    //
+    // Same as what we do in `match_url_char_32_avx`.
+    // This time the lower threshold is set to space character though.
+    let low = _mm256_cmpeq_epi8(_mm256_max_epu8(dat, LOW), dat);
+    // Check if `dat` includes `TAB` characters.
+    let tab = _mm256_cmpeq_epi8(dat, TAB);
+    // Check if `dat` includes `DEL` characters.
+    let del = _mm256_cmpeq_epi8(dat, DEL);
+
+    // Combine all comparisons together, notice that we're also using OR
+    // to connect `low` and `tab` but flip bits of `del`.
+    //
+    // In the end, this is simply:
+    // ~del & (low | tab)
+    let bit = _mm256_andnot_si256(del, _mm256_or_si256(low, tab));
+    // This creates a bitmask from the most significant bit of each byte.
+    // Creates a scalar value from vector value.
+    let res = _mm256_movemask_epi8(bit) as u32;
+
+    // Count trailing zeros to find the first encountered invalid character.
+    // Bitwise NOT is required once again to flip truthiness.
+    // TODO: use .trailing_ones() once MSRV >= 1.46
+    (!res).trailing_zeros() as usize
+}
+
+#[test]
+fn avx2_code_matches_uri_chars_table() {
+    if !is_x86_feature_detected!("avx2") {
+        return;
+    }
+
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_uri_vectored));
+
+        for (b, allowed) in crate::URI_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_uri_vectored), allowed,
+                "byte_is_allowed({:?}) should be {:?}", b, allowed,
+            );
+        }
+    }
+}
+
+#[test]
+fn avx2_code_matches_header_value_chars_table() {
+    if !is_x86_feature_detected!("avx2") {
+        return;
+    }
+
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_header_value_vectored));
+
+        for (b, allowed) in crate::HEADER_VALUE_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_header_value_vectored), allowed,
+                "byte_is_allowed({:?}) should be {:?}", b, allowed,
+            );
+        }
+    }
+}
+
+#[cfg(test)]
+unsafe fn byte_is_allowed(byte: u8, f: unsafe fn(bytes: &mut Bytes<'_>)) -> bool {
+    let slice = [
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', byte, b'_',
+        b'_', b'_', b'_', b'_',
+    ];
+    let mut bytes = Bytes::new(&slice);
+
+    f(&mut bytes);
+
+    match bytes.pos() {
+        32 => true,
+        26 => false,
+        _ => unreachable!(),
+    }
+}

vendor/httparse/src/simd/mod.rs

@@ -0,0 +1,153 @@
+mod swar;
+
+#[cfg(not(all(
+    httparse_simd,
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+        all(
+            target_arch = "aarch64",
+            httparse_simd_neon_intrinsics,
+        )
+    ),
+)))]
+pub use self::swar::*;
+
+#[cfg(all(
+    httparse_simd,
+    not(httparse_simd_target_feature_avx2),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+mod sse42;
+
+#[cfg(all(
+    httparse_simd,
+    any(
+        httparse_simd_target_feature_avx2,
+        not(httparse_simd_target_feature_sse42),
+    ),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+mod avx2;
+
+#[cfg(all(
+    httparse_simd,
+    not(any(
+        httparse_simd_target_feature_sse42,
+        httparse_simd_target_feature_avx2,
+    )),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+mod runtime;
+
+#[cfg(all(
+    httparse_simd,
+    not(any(
+        httparse_simd_target_feature_sse42,
+        httparse_simd_target_feature_avx2,
+    )),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+pub use self::runtime::*;
+
+#[cfg(all(
+    httparse_simd,
+    httparse_simd_target_feature_sse42,
+    not(httparse_simd_target_feature_avx2),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+mod sse42_compile_time {
+    #[inline(always)]
+    pub fn match_header_name_vectored(b: &mut crate::iter::Bytes<'_>) {
+        super::swar::match_header_name_vectored(b);
+    }
+
+    #[inline(always)]
+    pub fn match_uri_vectored(b: &mut crate::iter::Bytes<'_>) {
+        // SAFETY: calls are guarded by a compile time feature check
+        unsafe { crate::simd::sse42::match_uri_vectored(b) }
+    }
+    
+    #[inline(always)]
+    pub fn match_header_value_vectored(b: &mut crate::iter::Bytes<'_>) {
+        // SAFETY: calls are guarded by a compile time feature check
+        unsafe { crate::simd::sse42::match_header_value_vectored(b) }
+    }
+}
+
+#[cfg(all(
+    httparse_simd,
+    httparse_simd_target_feature_sse42,
+    not(httparse_simd_target_feature_avx2),
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+pub use self::sse42_compile_time::*;
+
+#[cfg(all(
+    httparse_simd,
+    httparse_simd_target_feature_avx2,
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+mod avx2_compile_time {
+    #[inline(always)]
+    pub fn match_header_name_vectored(b: &mut crate::iter::Bytes<'_>) {
+        super::swar::match_header_name_vectored(b);
+    }
+
+    #[inline(always)]
+    pub fn match_uri_vectored(b: &mut crate::iter::Bytes<'_>) {
+        // SAFETY: calls are guarded by a compile time feature check
+        unsafe { crate::simd::avx2::match_uri_vectored(b) }
+    }
+    
+    #[inline(always)]
+    pub fn match_header_value_vectored(b: &mut crate::iter::Bytes<'_>) {
+        // SAFETY: calls are guarded by a compile time feature check
+        unsafe { crate::simd::avx2::match_header_value_vectored(b) }
+    }
+}
+
+#[cfg(all(
+    httparse_simd,
+    httparse_simd_target_feature_avx2,
+    any(
+        target_arch = "x86",
+        target_arch = "x86_64",
+    ),
+))]
+pub use self::avx2_compile_time::*;
+
+#[cfg(all(
+    httparse_simd,
+    target_arch = "aarch64",
+    httparse_simd_neon_intrinsics,
+))]
+mod neon;
+
+#[cfg(all(
+    httparse_simd,
+    target_arch = "aarch64",
+    httparse_simd_neon_intrinsics,
+))]
+pub use self::neon::*;

vendor/httparse/src/simd/neon.rs

@@ -0,0 +1,258 @@
+use crate::iter::Bytes;
+use core::arch::aarch64::*;
+
+#[inline]
+pub fn match_header_name_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 16 {
+        // SAFETY: ensured that there are at least 16 bytes remaining 
+        unsafe {
+            let advance = match_header_name_char_16_neon(bytes.as_ref().as_ptr());
+            bytes.advance(advance);
+
+            if advance != 16 {
+                return;
+            }
+        }
+    }
+    super::swar::match_header_name_vectored(bytes);
+}
+
+#[inline]
+pub fn match_header_value_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 16 {
+        // SAFETY: ensured that there are at least 16 bytes remaining 
+        unsafe {
+            let advance = match_header_value_char_16_neon(bytes.as_ref().as_ptr());
+            bytes.advance(advance);
+
+            if advance != 16 {
+                return;
+            }
+        }
+    }
+    super::swar::match_header_value_vectored(bytes);
+}
+
+#[inline]
+pub fn match_uri_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 16 {
+        // SAFETY: ensured that there are at least 16 bytes remaining 
+        unsafe {
+            let advance = match_url_char_16_neon(bytes.as_ref().as_ptr());
+            bytes.advance(advance);
+
+            if advance != 16 {
+                return;
+            }
+        }
+    }
+    super::swar::match_uri_vectored(bytes);
+}
+
+const fn bit_set(x: u8) -> bool {
+    // Validates if a byte is a valid header name character
+    // https://tools.ietf.org/html/rfc7230#section-3.2.6
+    matches!(x, b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' | b'!' | b'#' | b'$' | b'%' | b'&' | b'\'' | b'*' | b'+' | b'-' | b'.' | b'^' | b'_' | b'`' | b'|' | b'~')
+}
+
+// A 256-bit bitmap, split into two halves
+// lower half contains bits whose higher nibble is <= 7
+// higher half contains bits whose higher nibble is >= 8
+const fn build_bitmap() -> ([u8; 16], [u8; 16]) {
+    let mut bitmap_0_7 = [0u8; 16]; // 0x00..0x7F
+    let mut bitmap_8_15 = [0u8; 16]; // 0x80..0xFF
+    let mut i = 0;
+    while i < 256 {
+        if bit_set(i as u8) {
+            // Nibbles
+            let (lo, hi) = (i & 0x0F, i >> 4);
+            if i < 128 {
+                bitmap_0_7[lo] |= 1 << hi;
+            } else {
+                bitmap_8_15[lo] |= 1 << hi;
+            }
+        }
+        i += 1;
+    }
+    (bitmap_0_7, bitmap_8_15)
+}
+
+const BITMAPS: ([u8; 16], [u8; 16]) = build_bitmap();
+
+// NOTE: adapted from 256-bit version, with upper 128-bit ops commented out
+#[inline]
+unsafe fn match_header_name_char_16_neon(ptr: *const u8) -> usize {
+    let bitmaps = BITMAPS;
+    // NOTE: ideally compile-time constants
+    let (bitmap_0_7, _bitmap_8_15) = bitmaps;
+    let bitmap_0_7 = vld1q_u8(bitmap_0_7.as_ptr());
+    // let bitmap_8_15 = vld1q_u8(bitmap_8_15.as_ptr());
+
+    // Initialize the bitmask_lookup.
+    const BITMASK_LOOKUP_DATA: [u8; 16] =
+        [1, 2, 4, 8, 16, 32, 64, 128, 1, 2, 4, 8, 16, 32, 64, 128];
+    let bitmask_lookup = vld1q_u8(BITMASK_LOOKUP_DATA.as_ptr());
+
+    // Load 16 input bytes.
+    let input = vld1q_u8(ptr);
+
+    // Extract indices for row_0_7.
+    let indices_0_7 = vandq_u8(input, vdupq_n_u8(0x8F)); // 0b1000_1111;
+
+    // Extract indices for row_8_15.
+    // let msb = vandq_u8(input, vdupq_n_u8(0x80));
+    // let indices_8_15 = veorq_u8(indices_0_7, msb);
+
+    // Fetch row_0_7 and row_8_15.
+    let row_0_7 = vqtbl1q_u8(bitmap_0_7, indices_0_7);
+    // let row_8_15 = vqtbl1q_u8(bitmap_8_15, indices_8_15);
+
+    // Calculate a bitmask, i.e. (1 << hi_nibble % 8).
+    let bitmask = vqtbl1q_u8(bitmask_lookup, vshrq_n_u8(input, 4));
+
+    // Choose rows halves depending on higher nibbles.
+    // let bitsets = vorrq_u8(row_0_7, row_8_15);
+    let bitsets = row_0_7;
+
+    // Finally check which bytes belong to the set.
+    let tmp = vandq_u8(bitsets, bitmask);
+    let result = vceqq_u8(tmp, bitmask);
+
+    offsetz(result) as usize
+}
+
+#[inline]
+unsafe fn match_url_char_16_neon(ptr: *const u8) -> usize {
+    let input = vld1q_u8(ptr);
+
+    // Check that b'!' <= and b != 127
+    let result = vcleq_u8(vdupq_n_u8(b'!'), input);
+
+    // Disallow del
+    let del = vceqq_u8(input, vdupq_n_u8(0x7F));
+    let result = vbicq_u8(result, del);
+
+    offsetz(result) as usize
+}
+
+#[inline]
+unsafe fn match_header_value_char_16_neon(ptr: *const u8) -> usize {
+    let input = vld1q_u8(ptr);
+
+    // Check that b' ' <= and b != 127 or b == 9
+    let result = vcleq_u8(vdupq_n_u8(b' '), input);
+
+    // Allow tab
+    let tab = vceqq_u8(input, vdupq_n_u8(0x09));
+    let result = vorrq_u8(result, tab);
+
+    // Disallow del
+    let del = vceqq_u8(input, vdupq_n_u8(0x7F));
+    let result = vbicq_u8(result, del);
+
+    offsetz(result) as usize
+}
+
+#[inline]
+unsafe fn offsetz(x: uint8x16_t) -> u32 {
+    // NOT the vector since it's faster to operate with zeros instead
+    offsetnz(vmvnq_u8(x))
+}
+
+#[inline]
+unsafe fn offsetnz(x: uint8x16_t) -> u32 {
+    // Extract two u64
+    let x = vreinterpretq_u64_u8(x);
+    // Extract to general purpose registers to perform clz
+    let low: u64 = vgetq_lane_u64::<0>(x);
+    let high: u64 = vgetq_lane_u64::<1>(x);
+
+    #[inline]
+    fn clz(x: u64) -> u32 {
+        // perf: rust will unroll this loop
+        // and it's much faster than rbit + clz so voila
+        for (i, b) in x.to_ne_bytes().iter().copied().enumerate() {
+            if b != 0 {
+                return i as u32;
+            }
+        }
+        8 // Technically not reachable since zero-guarded
+    }
+
+    if low != 0 {
+        clz(low)
+    } else if high != 0 {
+        return 8 + clz(high);
+    } else {
+        return 16;
+    }
+}
+
+#[test]
+fn neon_code_matches_uri_chars_table() {
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_uri_vectored));
+
+        for (b, allowed) in crate::URI_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_uri_vectored),
+                allowed,
+                "byte_is_allowed({:?}) should be {:?}",
+                b,
+                allowed,
+            );
+        }
+    }
+}
+
+#[test]
+fn neon_code_matches_header_value_chars_table() {
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_header_value_vectored));
+
+        for (b, allowed) in crate::HEADER_VALUE_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_header_value_vectored),
+                allowed,
+                "byte_is_allowed({:?}) should be {:?}",
+                b,
+                allowed,
+            );
+        }
+    }
+}
+
+#[test]
+fn neon_code_matches_header_name_chars_table() {
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_header_name_vectored));
+
+        for (b, allowed) in crate::TOKEN_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_header_name_vectored),
+                allowed,
+                "byte_is_allowed({:?}) should be {:?}",
+                b,
+                allowed,
+            );
+        }
+    }
+}
+
+#[cfg(test)]
+unsafe fn byte_is_allowed(byte: u8, f: unsafe fn(bytes: &mut Bytes<'_>)) -> bool {
+    let mut slice = [b'_'; 16];
+    slice[10] = byte;
+    let mut bytes = Bytes::new(&slice);
+
+    f(&mut bytes);
+
+    match bytes.pos() {
+        16 => true,
+        10 => false,
+        x => panic!("unexpected pos: {}", x),
+    }
+}

vendor/httparse/src/simd/runtime.rs

@@ -0,0 +1,57 @@
+use std::sync::atomic::{AtomicU8, Ordering};
+use crate::iter::Bytes;
+use super::avx2;
+use super::sse42;
+
+const AVX2: u8 = 1;
+const SSE42: u8 = 2;
+const NOP: u8 = 3;
+
+fn detect_runtime_feature() -> u8 {
+    if is_x86_feature_detected!("avx2") {
+        AVX2
+    } else if is_x86_feature_detected!("sse4.2") {
+        SSE42
+    } else {
+        NOP
+    }
+}
+
+static RUNTIME_FEATURE: AtomicU8 = AtomicU8::new(0);
+
+#[inline]
+fn get_runtime_feature() -> u8 {
+    let mut feature = RUNTIME_FEATURE.load(Ordering::Relaxed);
+    if feature == 0 {
+        feature = detect_runtime_feature();
+        RUNTIME_FEATURE.store(feature, Ordering::Relaxed);
+    }
+
+    feature
+}
+
+pub fn match_header_name_vectored(bytes: &mut Bytes) {
+    super::swar::match_header_name_vectored(bytes);
+}
+
+pub fn match_uri_vectored(bytes: &mut Bytes) {
+    // SAFETY: calls are guarded by a feature check
+    unsafe {
+        match get_runtime_feature() {
+            AVX2 => avx2::match_uri_vectored(bytes),
+            SSE42 => sse42::match_uri_vectored(bytes),
+            _ /* NOP */ => super::swar::match_uri_vectored(bytes),
+        }
+    }
+}
+
+pub fn match_header_value_vectored(bytes: &mut Bytes) {
+    // SAFETY: calls are guarded by a feature check
+    unsafe {
+        match get_runtime_feature() {
+            AVX2 => avx2::match_header_value_vectored(bytes),
+            SSE42 => sse42::match_header_value_vectored(bytes),
+            _ /* NOP */ => super::swar::match_header_value_vectored(bytes),
+        }
+    }
+}

vendor/httparse/src/simd/sse42.rs

@@ -0,0 +1,142 @@
+use crate::iter::Bytes;
+
+#[target_feature(enable = "sse4.2")]
+pub unsafe fn match_uri_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 16 {
+        let advance = match_url_char_16_sse(bytes.as_ref());
+
+        bytes.advance(advance);
+
+        if advance != 16 {
+            return;
+        }
+    }
+    super::swar::match_uri_vectored(bytes);
+}
+
+#[inline(always)]
+#[allow(non_snake_case)]
+unsafe fn match_url_char_16_sse(buf: &[u8]) -> usize {
+    debug_assert!(buf.len() >= 16);
+
+    #[cfg(target_arch = "x86")]
+    use core::arch::x86::*;
+    #[cfg(target_arch = "x86_64")]
+    use core::arch::x86_64::*;
+
+    let ptr = buf.as_ptr();
+
+    // %x21-%x7e %x80-%xff
+    let DEL: __m128i = _mm_set1_epi8(0x7f);
+    let LOW: __m128i = _mm_set1_epi8(0x21);
+
+    let dat = _mm_lddqu_si128(ptr as *const _);
+    // unsigned comparison dat >= LOW
+    let low = _mm_cmpeq_epi8(_mm_max_epu8(dat, LOW), dat);
+    let del = _mm_cmpeq_epi8(dat, DEL);
+    let bit = _mm_andnot_si128(del, low);
+    let res = _mm_movemask_epi8(bit) as u16;
+
+    // TODO: use .trailing_ones() once MSRV >= 1.46
+    (!res).trailing_zeros() as usize
+}
+
+#[target_feature(enable = "sse4.2")]
+pub unsafe fn match_header_value_vectored(bytes: &mut Bytes) {
+    while bytes.as_ref().len() >= 16 {
+        let advance = match_header_value_char_16_sse(bytes.as_ref());
+        bytes.advance(advance);
+
+       if advance != 16 {
+            return;
+       }
+    }
+    super::swar::match_header_value_vectored(bytes);
+}
+
+#[inline(always)]
+#[allow(non_snake_case)]
+unsafe fn match_header_value_char_16_sse(buf: &[u8]) -> usize {
+    debug_assert!(buf.len() >= 16);
+
+    #[cfg(target_arch = "x86")]
+    use core::arch::x86::*;
+    #[cfg(target_arch = "x86_64")]
+    use core::arch::x86_64::*;
+
+    let ptr = buf.as_ptr();
+
+    // %x09 %x20-%x7e %x80-%xff
+    let TAB: __m128i = _mm_set1_epi8(0x09);
+    let DEL: __m128i = _mm_set1_epi8(0x7f);
+    let LOW: __m128i = _mm_set1_epi8(0x20);
+
+    let dat = _mm_lddqu_si128(ptr as *const _);
+    // unsigned comparison dat >= LOW
+    let low = _mm_cmpeq_epi8(_mm_max_epu8(dat, LOW), dat);
+    let tab = _mm_cmpeq_epi8(dat, TAB);
+    let del = _mm_cmpeq_epi8(dat, DEL);
+    let bit = _mm_andnot_si128(del, _mm_or_si128(low, tab));
+    let res = _mm_movemask_epi8(bit) as u16;
+
+    // TODO: use .trailing_ones() once MSRV >= 1.46
+    (!res).trailing_zeros() as usize
+}
+
+#[test]
+fn sse_code_matches_uri_chars_table() {
+    if !is_x86_feature_detected!("sse4.2") {
+        return;
+    }
+
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_uri_vectored));
+
+        for (b, allowed) in crate::URI_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_uri_vectored), allowed,
+                "byte_is_allowed({:?}) should be {:?}", b, allowed,
+            );
+        }
+    }
+}
+
+#[test]
+fn sse_code_matches_header_value_chars_table() {
+    if !is_x86_feature_detected!("sse4.2") {
+        return;
+    }
+
+    #[allow(clippy::undocumented_unsafe_blocks)]
+    unsafe {
+        assert!(byte_is_allowed(b'_', match_header_value_vectored));
+
+        for (b, allowed) in crate::HEADER_VALUE_MAP.iter().cloned().enumerate() {
+            assert_eq!(
+                byte_is_allowed(b as u8, match_header_value_vectored), allowed,
+                "byte_is_allowed({:?}) should be {:?}", b, allowed,
+            );
+        }
+    }
+}
+
+#[allow(clippy::missing_safety_doc)]
+#[cfg(test)]
+unsafe fn byte_is_allowed(byte: u8, f: unsafe fn(bytes: &mut Bytes<'_>)) -> bool {
+    let slice = [
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', b'_', b'_',
+        b'_', b'_', byte, b'_',
+        b'_', b'_', b'_', b'_',
+    ];
+    let mut bytes = Bytes::new(&slice);
+
+    f(&mut bytes);
+
+    match bytes.pos() {
+        16 => true,
+        10 => false,
+        _ => unreachable!(),
+    }
+}

vendor/httparse/src/simd/swar.rs

@@ -0,0 +1,235 @@
+/// SWAR: SIMD Within A Register
+/// SIMD validator backend that validates register-sized chunks of data at a time.
+use crate::{is_header_name_token, is_header_value_token, is_uri_token, Bytes};
+
+// Adapt block-size to match native register size, i.e: 32bit => 4, 64bit => 8
+const BLOCK_SIZE: usize = core::mem::size_of::<usize>();
+type ByteBlock = [u8; BLOCK_SIZE];
+
+#[inline]
+pub fn match_uri_vectored(bytes: &mut Bytes) {
+    loop {
+        if let Some(bytes8) = bytes.peek_n::<ByteBlock>(BLOCK_SIZE) {
+            let n = match_uri_char_8_swar(bytes8);
+            // SAFETY: using peek_n to retrieve the bytes ensures that there are at least n more bytes
+            // in `bytes`, so calling `advance(n)` is safe.
+            unsafe {
+                bytes.advance(n);
+            }
+            if n == BLOCK_SIZE {
+                continue;
+            }
+        }
+        if let Some(b) = bytes.peek() {
+            if is_uri_token(b) {
+                // SAFETY: using peek to retrieve the byte ensures that there is at least 1 more byte
+                // in bytes, so calling advance is safe.
+                unsafe {
+                    bytes.advance(1);
+                }
+                continue;
+            }
+        }
+        break;
+    }
+}
+
+#[inline]
+pub fn match_header_value_vectored(bytes: &mut Bytes) {
+    loop {
+        if let Some(bytes8) = bytes.peek_n::<ByteBlock>(BLOCK_SIZE) {
+            let n = match_header_value_char_8_swar(bytes8);
+            // SAFETY: using peek_n to retrieve the bytes ensures that there are at least n more bytes
+            // in `bytes`, so calling `advance(n)` is safe.
+            unsafe {
+                bytes.advance(n);
+            }
+            if n == BLOCK_SIZE {
+                continue;
+            }
+        }
+        if let Some(b) = bytes.peek() {
+            if is_header_value_token(b) {
+                // SAFETY: using peek to retrieve the byte ensures that there is at least 1 more byte
+                // in bytes, so calling advance is safe.
+                unsafe {
+                    bytes.advance(1);
+                }
+                continue;
+            }
+        }
+        break;
+    }
+}
+
+#[inline]
+pub fn match_header_name_vectored(bytes: &mut Bytes) {
+    while let Some(block) = bytes.peek_n::<ByteBlock>(BLOCK_SIZE) {
+        let n = match_block(is_header_name_token, block);
+        // SAFETY: using peek_n to retrieve the bytes ensures that there are at least n more bytes
+        // in `bytes`, so calling `advance(n)` is safe.
+        unsafe {
+            bytes.advance(n);
+        }
+        if n != BLOCK_SIZE {
+            return;
+        }
+    }
+    // SAFETY: match_tail processes at most the remaining data in `bytes`. advances `bytes` to the
+    // end, but no further.
+    unsafe { bytes.advance(match_tail(is_header_name_token, bytes.as_ref())) };
+}
+
+// Matches "tail", i.e: when we have <BLOCK_SIZE bytes in the buffer, should be uncommon
+#[cold]
+#[inline]
+fn match_tail(f: impl Fn(u8) -> bool, bytes: &[u8]) -> usize {
+    for (i, &b) in bytes.iter().enumerate() {
+        if !f(b) {
+            return i;
+        }
+    }
+    bytes.len()
+}
+
+// Naive fallback block matcher
+#[inline(always)]
+fn match_block(f: impl Fn(u8) -> bool, block: ByteBlock) -> usize {
+    for (i, &b) in block.iter().enumerate() {
+        if !f(b) {
+            return i;
+        }
+    }
+    BLOCK_SIZE
+}
+
+// A const alternative to u64::from_ne_bytes to avoid bumping MSRV (1.36 => 1.44)
+// creates a u64 whose bytes are each equal to b
+const fn uniform_block(b: u8) -> usize {
+    (b as u64 *  0x01_01_01_01_01_01_01_01 /* [1_u8; 8] */) as usize
+}
+
+// A byte-wise range-check on an entire word/block,
+// ensuring all bytes in the word satisfy `33 <= (x != 127) <= 255`
+#[inline]
+fn match_uri_char_8_swar(block: ByteBlock) -> usize {
+    // 33 <= (x != 127) <= 255
+    const M: u8 = 0x21;
+    // uniform block full of exclamation mark (!) (33).
+    const BM: usize = uniform_block(M);
+    // uniform block full of 1.
+    const ONE: usize = uniform_block(0x01);
+    // uniform block full of DEL (127).
+    const DEL: usize = uniform_block(0x7f);
+    // uniform block full of 128.
+    const M128: usize = uniform_block(128);
+
+    let x = usize::from_ne_bytes(block); // Really just a transmute
+    let lt = x.wrapping_sub(BM) & !x; // <= m
+
+    let xor_del = x ^ DEL;
+    let eq_del = xor_del.wrapping_sub(ONE) & !xor_del; // == DEL
+
+    offsetnz((lt | eq_del) & M128)
+}
+
+// A byte-wise range-check on an entire word/block,
+// ensuring all bytes in the word satisfy `32 <= (x != 127) <= 255`
+#[inline]
+fn match_header_value_char_8_swar(block: ByteBlock) -> usize {
+    // 32 <= (x != 127) <= 255
+    const M: u8 = 0x20;
+    // uniform block full of exclamation mark (!) (33).
+    const BM: usize = uniform_block(M);
+    // uniform block full of 1.
+    const ONE: usize = uniform_block(0x01);
+    // uniform block full of DEL (127).
+    const DEL: usize = uniform_block(0x7f);
+    // uniform block full of 128.
+    const M128: usize = uniform_block(128);
+
+    let x = usize::from_ne_bytes(block); // Really just a transmute
+    let lt = x.wrapping_sub(BM) & !x; // <= m
+
+    let xor_del = x ^ DEL;
+    let eq_del = xor_del.wrapping_sub(ONE) & !xor_del; // == DEL
+
+    offsetnz((lt | eq_del) & M128)
+}
+
+/// Check block to find offset of first non-zero byte
+// NOTE: Curiously `block.trailing_zeros() >> 3` appears to be slower, maybe revisit
+#[inline]
+fn offsetnz(block: usize) -> usize {
+    // fast path optimistic case (common for long valid sequences)
+    if block == 0 {
+        return BLOCK_SIZE;
+    }
+
+    // perf: rust will unroll this loop
+    for (i, b) in block.to_ne_bytes().iter().copied().enumerate() {
+        if b != 0 {
+            return i;
+        }
+    }
+    unreachable!()
+}
+
+#[test]
+fn test_is_header_value_block() {
+    let is_header_value_block = |b| match_header_value_char_8_swar(b) == BLOCK_SIZE;
+
+    // 0..32 => false
+    for b in 0..32_u8 {
+        assert!(!is_header_value_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+    // 32..=126 => true
+    for b in 32..=126_u8 {
+        assert!(is_header_value_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+    // 127 => false
+    assert!(!is_header_value_block([b'\x7F'; BLOCK_SIZE]), "b={}", b'\x7F');
+    // 128..=255 => true
+    for b in 128..=255_u8 {
+        assert!(is_header_value_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+
+
+    #[cfg(target_pointer_width = "64")]
+    {
+        // A few sanity checks on non-uniform bytes for safe-measure
+        assert!(!is_header_value_block(*b"foo.com\n"));
+        assert!(!is_header_value_block(*b"o.com\r\nU"));
+    }
+}
+
+#[test]
+fn test_is_uri_block() {
+    let is_uri_block = |b| match_uri_char_8_swar(b) == BLOCK_SIZE;
+
+    // 0..33 => false
+    for b in 0..33_u8 {
+        assert!(!is_uri_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+    // 33..=126 => true
+    for b in 33..=126_u8 {
+        assert!(is_uri_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+    // 127 => false
+    assert!(!is_uri_block([b'\x7F'; BLOCK_SIZE]), "b={}", b'\x7F');
+    // 128..=255 => true
+    for b in 128..=255_u8 {
+        assert!(is_uri_block([b; BLOCK_SIZE]), "b={}", b);
+    }
+}
+
+#[test]
+fn test_offsetnz() {
+    let seq = [0_u8; BLOCK_SIZE];
+    for i in 0..BLOCK_SIZE {
+        let mut seq = seq;
+        seq[i] = 1;
+        let x = usize::from_ne_bytes(seq);
+        assert_eq!(offsetnz(x), i);
+    }
+}