diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 3d16a7eb7..a1a31fb8d 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -6,7 +6,11 @@ on:
       - master
 
 permissions:
-  contents: read  #  to fetch code (actions/checkout)
+  contents: read # to fetch code (actions/checkout)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
   check_benchmark:
diff --git a/.github/workflows/ci-post-merge.yml b/.github/workflows/ci-post-merge.yml
index 30d13bf88..d47083575 100644
--- a/.github/workflows/ci-post-merge.yml
+++ b/.github/workflows/ci-post-merge.yml
@@ -5,7 +5,11 @@ on:
     branches: [master]
 
 permissions:
-  contents: read  #  to fetch code (actions/checkout)
+  contents: read # to fetch code (actions/checkout)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
   build_and_test_nightly:
@@ -44,7 +48,7 @@ jobs:
       - name: Install ${{ matrix.version }}
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: ${{ matrix.version }}-${{ matrix.target.triple }}
+          toolchain: ${{ matrix.version }}
           profile: minimal
           override: true
 
@@ -81,7 +85,7 @@ jobs:
 
       - name: Clear the cargo caches
         run: |
-          cargo install cargo-cache --version 0.8.2 --no-default-features --features ci-autoclean
+          cargo install cargo-cache --version 0.8.3 --no-default-features --features ci-autoclean
           cargo-cache
 
   ci_feature_powerset_check:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48380265a..4c9149722 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,6 +9,10 @@ on:
 permissions:
   contents: read # to fetch code (actions/checkout)
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build_and_test:
     strategy:
@@ -17,7 +21,7 @@ jobs:
         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 }
+          - { name: Windows, os: windows-latest, triple: x86_64-pc-windows-msvc }
         version:
           - 1.59.0 # MSRV
           - stable
@@ -25,30 +29,22 @@ jobs:
     name: ${{ matrix.target.name }} / ${{ matrix.version }}
     runs-on: ${{ matrix.target.os }}
 
-    env:
-      CI: 1
-      CARGO_INCREMENTAL: 0
-      VCPKGRS_DYNAMIC: 1
+    env: {}
 
     steps:
       - uses: actions/checkout@v3
 
-      # 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
+        if: matrix.target.os == 'windows-latest'
+        run: choco install openssl
+      - name: Set OpenSSL dir in env
+        if: matrix.target.os == 'windows-latest'
+        run: echo 'OPENSSL_DIR=C:\Program Files\OpenSSL-Win64' | Out-File -FilePath $env:GITHUB_ENV -Append
 
-      - name: Install ${{ matrix.version }}
-        uses: actions-rs/toolchain@v1
+      - name: Install Rust (${{ matrix.version }})
+        uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
-          toolchain: ${{ matrix.version }}-${{ matrix.target.triple }}
-          profile: minimal
-          override: true
+          toolchain: ${{ matrix.version }}
 
       - name: Install cargo-hack
         uses: taiki-e/install-action@cargo-hack
@@ -60,12 +56,6 @@ jobs:
           cargo add const-str@0.3 --dev -p=actix-web
           cargo add const-str@0.3 --dev -p=awc
 
-      - name: Generate Cargo.lock
-        uses: actions-rs/cargo@v1
-        with: { command: generate-lockfile }
-      - name: Cache Dependencies
-        uses: Swatinem/rust-cache@v1.2.0
-
       - name: workaround MSRV issues
         if: matrix.version != 'stable'
         run: |
@@ -95,7 +85,7 @@ jobs:
 
       - name: Clear the cargo caches
         run: |
-          cargo install cargo-cache --version 0.8.2 --no-default-features --features ci-autoclean
+          cargo install cargo-cache --version 0.8.3 --no-default-features --features ci-autoclean
           cargo-cache
 
   io-uring:
@@ -104,20 +94,15 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: dtolnay/rust-toolchain@stable
-
-      - name: Generate Cargo.lock
-        run: cargo generate-lockfile
-      - name: Cache Dependencies
-        uses: Swatinem/rust-cache@v1.3.0
+      - name: Install Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with: { toolchain: nightly }
 
       - name: tests (io-uring)
         timeout-minutes: 60
         run: >
-          sudo bash -c "ulimit -Sl 512
-          && ulimit -Hl 512
-          && PATH=$PATH:/usr/share/rust/.cargo/bin
-          && RUSTUP_TOOLCHAIN=stable cargo test --lib --tests -p=actix-files --all-features"
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=stable cargo test --lib --tests -p=actix-files --all-features"
+
 
   rustdoc:
     name: doc tests
@@ -125,12 +110,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: dtolnay/rust-toolchain@nightly
-
-      - name: Generate Cargo.lock
-        run: cargo generate-lockfile
-      - name: Cache Dependencies
-        uses: Swatinem/rust-cache@v1.3.0
+      - name: Install Rust (nightly)
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with: { toolchain: nightly }
 
       - name: doc tests
         run: cargo ci-doctest
diff --git a/.github/workflows/clippy-fmt.yml b/.github/workflows/clippy-fmt.yml
index 877ca74e4..a7da9b1c5 100644
--- a/.github/workflows/clippy-fmt.yml
+++ b/.github/workflows/clippy-fmt.yml
@@ -4,46 +4,72 @@ on:
   pull_request:
     types: [opened, synchronize, reopened]
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   fmt:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@nightly
-        with: { components: rustfmt }
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: nightly
+          components: rustfmt
+
       - run: cargo fmt --all -- --check
 
   clippy:
+    permissions:
+      checks: write # to add clippy checks to PR diffs
+
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
 
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
         with: { components: clippy }
 
-      - name: Generate Cargo.lock
-        run: cargo generate-lockfile
-      - name: Cache Dependencies
-        uses: Swatinem/rust-cache@v1.2.0
-  
-      - name: Check with Clippy
-        uses: actions-rs/clippy-check@v1
+      - uses: giraffate/clippy-action@v1
         with:
-          args: --workspace --tests --examples --all-features
-          token: ${{ secrets.GITHUB_TOKEN }}
+          reporter: 'github-pr-check'
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          clippy_flags: --workspace --all-features --tests --examples --bins -- -Dclippy::todo
 
   lint-docs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
 
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
         with: { components: rust-docs }
 
       - name: Check for broken intra-doc links
-        uses: actions-rs/cargo@v1
-        env:
-          RUSTDOCFLAGS: "-D warnings"
+        env: { RUSTDOCFLAGS: "-D warnings" }
+        run: cargo doc --no-deps --all-features --workspace
+
+  public-api-diff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
         with:
-          command: doc
-          args: --no-deps --all-features --workspace
+          ref: ${{ github.base_ref }}
+
+      - uses: actions/checkout@v3
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with: { toolchain: nightly }
+
+      - uses: taiki-e/cache-cargo-install-action@v1
+        with: { tool: cargo-public-api }
+
+      - name: generate API diff
+        run: |
+          for f in $(find -mindepth 2 -maxdepth 2 -name Cargo.toml); do
+            cargo public-api --manifest-path "$f" diff ${{ github.event.pull_request.base.sha }}..${{ github.sha }}
+          done
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index bb6d7fb97..d537031c3 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -6,6 +6,13 @@ on:
   push:
     branches: [master]
 
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   # job currently (1st Feb 2022) segfaults
   coverage:
@@ -14,18 +21,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - 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
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with: { toolchain: nightly }
 
       - name: Generate coverage file
         run: |
diff --git a/.github/workflows/upload-doc.yml b/.github/workflows/upload-doc.yml
index 2464ebcd6..743e14412 100644
--- a/.github/workflows/upload-doc.yml
+++ b/.github/workflows/upload-doc.yml
@@ -4,11 +4,17 @@ on:
   push:
     branches: [master]
 
-permissions: {}
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
     permissions:
-      contents: write  #  to push changes in repo (jamesives/github-pages-deploy-action)
+      contents: write # to push changes in repo (jamesives/github-pages-deploy-action)
 
     runs-on: ubuntu-latest
 
diff --git a/actix-http-test/src/lib.rs b/actix-http-test/src/lib.rs
index 55224dc46..8dcbe759d 100644
--- a/actix-http-test/src/lib.rs
+++ b/actix-http-test/src/lib.rs
@@ -34,7 +34,9 @@ use tokio::sync::mpsc;
 /// ```no_run
 /// use actix_http::HttpService;
 /// use actix_http_test::test_server;
-/// use actix_web::{web, App, HttpResponse, Error};
+/// use actix_service::map_config;
+/// use actix_service::ServiceFactoryExt;
+/// use actix_web::{dev::AppConfig, web, App, Error, HttpResponse};
 ///
 /// async fn my_handler() -> Result<HttpResponse, Error> {
 ///     Ok(HttpResponse::Ok().into())
@@ -42,14 +44,19 @@ use tokio::sync::mpsc;
 ///
 /// #[actix_web::test]
 /// async fn test_example() {
-///     let mut srv = TestServer::start(||
-///         HttpService::new(
-///             App::new().service(web::resource("/").to(my_handler))
-///         )
-///     );
+///     let srv = test_server(|| {
+///         let app = App::new().service(web::resource("/").to(my_handler));
+///
+///         HttpService::build()
+///             .h1(map_config(app, |_| AppConfig::default()))
+///             .tcp()
+///             .map_err(|_| ())
+///     })
+///     .await;
 ///
 ///     let req = srv.get("/");
 ///     let response = req.send().await.unwrap();
+///
 ///     assert!(response.status().is_success());
 /// }
 /// ```