Bump version

The FlatMap calls pre-populated routeAddressSet and routeExcludeAddressSet
before the for-loops which appended the same IP sets again, doubling every
entry. On Windows this caused CreateIpForwardEntry2 to return
ERROR_OBJECT_ALREADY_EXISTS.

Fixes #3725

.github/setup_go_for_windows7.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-VERSION="1.25.4"
+VERSION="1.25.7"
 
 mkdir -p $HOME/go
 cd $HOME/go

.github/setup_musl_cross.sh

@@ -1,11 +0,0 @@
-#!/bin/bash
-set -xeuo pipefail
-
-TARGET="$1"
-
-# Download musl-cross toolchain from musl.cc
-cd "$HOME"
-wget -q "https://musl.cc/${TARGET}-cross.tgz"
-mkdir -p musl-cross
-tar -xf "${TARGET}-cross.tgz" -C musl-cross --strip-components=1
-rm "${TARGET}-cross.tgz"

.github/update_cronet.sh

@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-
-PROJECTS=$(dirname "$0")/../..
-git -C $PROJECTS/cronet-go fetch origin go
-go get -x github.com/sagernet/cronet-go/all@$(git -C $PROJECTS/cronet-go rev-parse origin/go)
-
-go mod tidy

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -93,6 +93,10 @@ jobs:
           - { os: windows, arch: "386", legacy_win7: true, legacy_name: "windows-7" }
           - { os: windows, arch: arm64 }
 
+          - { os: darwin, arch: amd64 }
+          - { os: darwin, arch: arm64 }
+          - { os: darwin, arch: amd64, legacy_go124: true, legacy_name: "macos-11" }
+
           - { os: android, arch: arm64, ndk: "aarch64-linux-android21" }
           - { os: android, arch: arm, ndk: "armv7a-linux-androideabi21" }
           - { os: android, arch: amd64, ndk: "x86_64-linux-android21" }
@@ -106,7 +110,7 @@ jobs:
         if: ${{ ! (matrix.legacy_win7 || matrix.legacy_go124) }}
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Setup Go 1.24
         if: matrix.legacy_go124
         uses: actions/setup-go@v5
@@ -119,7 +123,7 @@ jobs:
         with:
           path: |
             ~/go/go_win7
-          key: go_win7_1254
+          key: go_win7_1255
       - name: Setup Go for Windows 7
         if: matrix.legacy_win7 && steps.cache-go-for-windows7.outputs.cache-hit != 'true'
         run: |-
@@ -142,10 +146,7 @@ jobs:
       - name: Set build tags
         run: |
           set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0'
-          if [[ "${{ matrix.os }}" == "android" ]]; then
-            TAGS="${TAGS},with_naive_outbound"
-          fi
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale'
           echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
         if: matrix.os != 'android'
@@ -153,7 +154,7 @@ jobs:
           set -xeuo pipefail
           mkdir -p dist
           go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
+          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }}' \
           ./cmd/sing-box
         env:
           CGO_ENABLED: "0"
@@ -173,7 +174,7 @@ jobs:
           export CXX="${CC}++"
           mkdir -p dist
           GOOS=$BUILD_GOOS GOARCH=$BUILD_GOARCH build go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
+          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }}' \
           ./cmd/sing-box
         env:
           CGO_ENABLED: "1"
@@ -284,199 +285,6 @@ jobs:
         with:
           name: binary-${{ matrix.os }}_${{ matrix.arch }}${{ matrix.goarm && format('v{0}', matrix.goarm) }}${{ matrix.go386 && format('_{0}', matrix.go386) }}${{ matrix.gomips && format('_{0}', matrix.gomips) }}${{ matrix.legacy_name && format('-legacy-{0}', matrix.legacy_name) }}
           path: "dist"
-  build_darwin:
-    name: Build Darwin binaries
-    if: github.event_name != 'workflow_dispatch' || inputs.build == 'All' || inputs.build == 'Binary'
-    runs-on: macos-latest
-    needs:
-      - calculate_version
-    strategy:
-      matrix:
-        include:
-          - { arch: amd64 }
-          - { arch: arm64 }
-          - { arch: amd64, legacy_go124: true, legacy_name: "macos-11" }
-    steps:
-      - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
-        with:
-          fetch-depth: 0
-      - name: Setup Go
-        if: ${{ ! matrix.legacy_go124 }}
-        uses: actions/setup-go@v5
-        with:
-          go-version: ^1.25.3
-      - name: Setup Go 1.24
-        if: matrix.legacy_go124
-        uses: actions/setup-go@v5
-        with:
-          go-version: ~1.24.6
-      - name: Set tag
-        run: |-
-          git ls-remote --exit-code --tags origin v${{ needs.calculate_version.outputs.version }} || echo "PUBLISHED=false" >> "$GITHUB_ENV"
-          git tag v${{ needs.calculate_version.outputs.version }} -f
-      - name: Set build tags
-        run: |
-          set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,with_naive_outbound,badlinkname,tfogo_checklinkname0'
-          echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
-      - name: Build
-        run: |
-          set -xeuo pipefail
-          mkdir -p dist
-          go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
-          ./cmd/sing-box
-        env:
-          CGO_ENABLED: "1"
-          GOOS: darwin
-          GOARCH: ${{ matrix.arch }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Set name
-        run: |-
-          DIR_NAME="sing-box-${{ needs.calculate_version.outputs.version }}-darwin-${{ matrix.arch }}"
-          if [[ -n "${{ matrix.legacy_name }}" ]]; then
-            DIR_NAME="${DIR_NAME}-legacy-${{ matrix.legacy_name }}"
-          fi
-          echo "DIR_NAME=${DIR_NAME}" >> "${GITHUB_ENV}"
-      - name: Archive
-        run: |
-          set -xeuo pipefail
-          cd dist
-          mkdir -p "${DIR_NAME}"
-          cp ../LICENSE "${DIR_NAME}"
-          cp sing-box "${DIR_NAME}"
-          tar -czvf "${DIR_NAME}.tar.gz" "${DIR_NAME}"
-          rm -r "${DIR_NAME}"
-      - name: Cleanup
-        run: rm dist/sing-box
-      - name: Upload artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: binary-darwin_${{ matrix.arch }}${{ matrix.legacy_name && format('-legacy-{0}', matrix.legacy_name) }}
-          path: "dist"
-  build_naive_linux:
-    name: Build Linux with naive outbound
-    if: github.event_name != 'workflow_dispatch' || inputs.build == 'All' || inputs.build == 'Binary'
-    runs-on: ubuntu-latest
-    needs:
-      - calculate_version
-    strategy:
-      matrix:
-        include:
-          # Linux glibc (dynamic linking with Debian Bullseye sysroot)
-          - { arch: amd64, sysroot_arch: amd64, sysroot_sha: "36a164623d03f525e3dfb783a5e9b8a00e98e1ddd2b5cff4e449bd016dd27e50", cc_target: "x86_64-linux-gnu", suffix: "-naive" }
-          - { arch: arm64, sysroot_arch: arm64, sysroot_sha: "2f915d821eec27515c0c6d21b69898e23762908d8d7ccc1aa2a8f5f25e8b7e18", cc_target: "aarch64-linux-gnu", suffix: "-naive" }
-          - { arch: "386", sysroot_arch: i386, sysroot_sha: "63f0e5128b84f7b0421956a4a40affa472be8da0e58caf27e9acbc84072daee7", cc_target: "i686-linux-gnu", suffix: "-naive" }
-          - { arch: arm, goarm: "7", sysroot_arch: armhf, sysroot_sha: "47b3a0b161ca011b2b33d4fc1ef6ef269b8208a0b7e4c900700c345acdfd1814", cc_target: "arm-linux-gnueabihf", suffix: "-naive" }
-          # Linux musl (static linking)
-          - { arch: amd64, musl: true, cc_target: "x86_64-linux-musl", suffix: "-naive-musl" }
-          - { arch: arm64, musl: true, cc_target: "aarch64-linux-musl", suffix: "-naive-musl" }
-          - { arch: "386", musl: true, cc_target: "i686-linux-musl", suffix: "-naive-musl" }
-          - { arch: arm, goarm: "7", musl: true, cc_target: "arm-linux-musleabihf", suffix: "-naive-musl" }
-    steps:
-      - name: Checkout
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
-        with:
-          fetch-depth: 0
-      - name: Setup Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: ^1.25.4
-      - name: Set tag
-        run: |-
-          git ls-remote --exit-code --tags origin v${{ needs.calculate_version.outputs.version }} || echo "PUBLISHED=false" >> "$GITHUB_ENV"
-          git tag v${{ needs.calculate_version.outputs.version }} -f
-      - name: Download sysroot (glibc)
-        if: ${{ ! matrix.musl }}
-        run: |
-          set -xeuo pipefail
-          wget -q "https://commondatastorage.googleapis.com/chrome-linux-sysroot/${{ matrix.sysroot_sha }}" -O sysroot.tar.xz
-          mkdir -p /tmp/sysroot
-          tar -xf sysroot.tar.xz -C /tmp/sysroot
-      - name: Install cross compiler (glibc)
-        if: ${{ ! matrix.musl }}
-        run: |
-          set -xeuo pipefail
-          sudo apt-get update
-          sudo apt-get install -y clang lld
-          if [[ "${{ matrix.arch }}" == "arm64" ]]; then
-            sudo apt-get install -y libc6-dev-arm64-cross
-          elif [[ "${{ matrix.arch }}" == "386" ]]; then
-            sudo apt-get install -y libc6-dev-i386-cross
-          elif [[ "${{ matrix.arch }}" == "arm" ]]; then
-            sudo apt-get install -y libc6-dev-armhf-cross
-          fi
-      - name: Install musl cross compiler
-        if: matrix.musl
-        run: |
-          set -xeuo pipefail
-          .github/setup_musl_cross.sh "${{ matrix.cc_target }}"
-          echo "PATH=$HOME/musl-cross/bin:$PATH" >> $GITHUB_ENV
-      - name: Set build tags
-        run: |
-          set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,with_naive_outbound,badlinkname,tfogo_checklinkname0'
-          if [[ "${{ matrix.musl }}" == "true" ]]; then
-            TAGS="${TAGS},with_musl"
-          fi
-          echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
-      - name: Build (glibc)
-        if: ${{ ! matrix.musl }}
-        run: |
-          set -xeuo pipefail
-          mkdir -p dist
-          go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0 -linkmode=external -extldflags "-fuse-ld=lld --sysroot=/tmp/sysroot"' \
-          ./cmd/sing-box
-        env:
-          CGO_ENABLED: "1"
-          GOOS: linux
-          GOARCH: ${{ matrix.arch }}
-          GOARM: ${{ matrix.goarm }}
-          CC: "clang --target=${{ matrix.cc_target }} --sysroot=/tmp/sysroot"
-          CXX: "clang++ --target=${{ matrix.cc_target }} --sysroot=/tmp/sysroot"
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Build (musl)
-        if: matrix.musl
-        run: |
-          set -xeuo pipefail
-          mkdir -p dist
-          go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0 -linkmode=external -extldflags "-static"' \
-          ./cmd/sing-box
-        env:
-          CGO_ENABLED: "1"
-          GOOS: linux
-          GOARCH: ${{ matrix.arch }}
-          GOARM: ${{ matrix.goarm }}
-          CC: "${{ matrix.cc_target }}-gcc"
-          CXX: "${{ matrix.cc_target }}-g++"
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Set name
-        run: |-
-          DIR_NAME="sing-box-${{ needs.calculate_version.outputs.version }}-linux-${{ matrix.arch }}"
-          if [[ -n "${{ matrix.goarm }}" ]]; then
-            DIR_NAME="${DIR_NAME}v${{ matrix.goarm }}"
-          fi
-          DIR_NAME="${DIR_NAME}${{ matrix.suffix }}"
-          echo "DIR_NAME=${DIR_NAME}" >> "${GITHUB_ENV}"
-      - name: Archive
-        run: |
-          set -xeuo pipefail
-          cd dist
-          mkdir -p "${DIR_NAME}"
-          cp ../LICENSE "${DIR_NAME}"
-          cp sing-box "${DIR_NAME}"
-          tar -czvf "${DIR_NAME}.tar.gz" "${DIR_NAME}"
-          rm -r "${DIR_NAME}"
-      - name: Cleanup
-        run: rm dist/sing-box
-      - name: Upload artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: binary-linux_${{ matrix.arch }}${{ matrix.goarm && format('v{0}', matrix.goarm) }}${{ matrix.suffix }}
-          path: "dist"
   build_android:
     name: Build Android
     if: github.event_name != 'workflow_dispatch' || inputs.build == 'All' || inputs.build == 'Android'
@@ -492,7 +300,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -572,7 +380,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -671,7 +479,7 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Set tag
         if: matrix.if
         run: |-
@@ -811,8 +619,6 @@ jobs:
     needs:
       - calculate_version
       - build
-      - build_darwin
-      - build_naive_linux
       - build_android
       - build_apple
     steps:

.github/workflows/lint.yml

@@ -28,11 +28,11 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25
+          go-version: ~1.24.10
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v8
         with:
-          version: v2.4.0
+          version: latest
           args: --timeout=30m
           install-mode: binary
           verify: false

.github/workflows/linux.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -71,7 +71,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.4
+          go-version: ^1.25.7
       - name: Setup Android NDK
         if: matrix.os == 'android'
         uses: nttld/setup-ndk@v1
@@ -85,14 +85,14 @@ jobs:
       - name: Set build tags
         run: |
           set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0'
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale'
           echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
         run: |
           set -xeuo pipefail
           mkdir -p dist
           go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
-          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
+          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }}' \
           ./cmd/sing-box
         env:
           CGO_ENABLED: "0"

.golangci.yml

@@ -1,6 +1,6 @@
 version: "2"
 run:
-  go: "1.25"
+  go: "1.24"
   build-tags:
     - with_gvisor
     - with_quic

.goreleaser.fury.yaml

@@ -0,0 +1,103 @@
+project_name: sing-box
+builds:
+  - id: main
+    main: ./cmd/sing-box
+    flags:
+      - -v
+      - -trimpath
+    ldflags:
+      - -X github.com/sagernet/sing-box/constant.Version={{ .Version }}
+      - -s
+      - -buildid=
+    tags:
+      - with_gvisor
+      - with_quic
+      - with_dhcp
+      - with_wireguard
+      - with_utls
+      - with_acme
+      - with_clash_api
+      - with_tailscale
+    env:
+      - CGO_ENABLED=0
+    targets:
+      - linux_386
+      - linux_amd64_v1
+      - linux_arm64
+      - linux_arm_7
+      - linux_s390x
+      - linux_riscv64
+      - linux_mips64le
+    mod_timestamp: '{{ .CommitTimestamp }}'
+snapshot:
+  name_template: "{{ .Version }}.{{ .ShortCommit }}"
+nfpms:
+  - &template
+    id: package
+    package_name: sing-box
+    file_name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}{{ with .Mips }}_{{ . }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}'
+    builds:
+      - main
+    homepage: https://sing-box.sagernet.org/
+    maintainer: nekohasekai <contact-git@sekai.icu>
+    description: The universal proxy platform.
+    license: GPLv3 or later
+    formats:
+      - deb
+      - rpm
+    priority: extra
+    contents:
+      - src: release/config/config.json
+        dst: /etc/sing-box/config.json
+        type: "config|noreplace"
+
+      - src: release/config/sing-box.service
+        dst: /usr/lib/systemd/system/sing-box.service
+      - src: release/config/sing-box@.service
+        dst: /usr/lib/systemd/system/sing-box@.service
+      - src: release/config/sing-box.sysusers
+        dst: /usr/lib/sysusers.d/sing-box.conf
+      - src: release/config/sing-box.rules
+        dst: /usr/share/polkit-1/rules.d/sing-box.rules
+      - src: release/config/sing-box-split-dns.xml
+        dst: /usr/share/dbus-1/system.d/sing-box-split-dns.conf
+
+      - src: release/completions/sing-box.bash
+        dst: /usr/share/bash-completion/completions/sing-box.bash
+      - src: release/completions/sing-box.fish
+        dst: /usr/share/fish/vendor_completions.d/sing-box.fish
+      - src: release/completions/sing-box.zsh
+        dst: /usr/share/zsh/site-functions/_sing-box
+
+      - src: LICENSE
+        dst: /usr/share/licenses/sing-box/LICENSE
+    deb:
+      signature:
+        key_file: "{{ .Env.NFPM_KEY_PATH }}"
+      fields:
+        Bugs: https://github.com/SagerNet/sing-box/issues
+    rpm:
+      signature:
+        key_file: "{{ .Env.NFPM_KEY_PATH }}"
+    conflicts:
+      - sing-box-beta
+  - id: package_beta
+    <<: *template
+    package_name: sing-box-beta
+    file_name_template: '{{ .ProjectName }}-beta_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}{{ with .Mips }}_{{ . }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}'
+    formats:
+      - deb
+      - rpm
+    conflicts:
+      - sing-box
+release:
+  disable: true
+furies:
+  - account: sagernet
+    ids:
+      - package
+    disable: "{{ not (not .Prerelease) }}"
+  - account: sagernet
+    ids:
+      - package_beta
+    disable: "{{ not .Prerelease }}"

.goreleaser.yaml

@@ -0,0 +1,213 @@
+version: 2
+project_name: sing-box
+builds:
+  - &template
+    id: main
+    main: ./cmd/sing-box
+    flags:
+      - -v
+      - -trimpath
+    ldflags:
+      - -X github.com/sagernet/sing-box/constant.Version={{ .Version }}
+      - -s
+      - -buildid=
+    tags:
+      - with_gvisor
+      - with_quic
+      - with_dhcp
+      - with_wireguard
+      - with_utls
+      - with_acme
+      - with_clash_api
+      - with_tailscale
+    env:
+      - CGO_ENABLED=0
+      - GOTOOLCHAIN=local
+    targets:
+      - linux_386
+      - linux_amd64_v1
+      - linux_arm64
+      - linux_arm_6
+      - linux_arm_7
+      - linux_s390x
+      - linux_riscv64
+      - linux_mips64le
+      - windows_amd64_v1
+      - windows_386
+      - windows_arm64
+      - darwin_amd64_v1
+      - darwin_arm64
+    mod_timestamp: '{{ .CommitTimestamp }}'
+  - id: legacy
+    <<: *template
+    tags:
+      - with_gvisor
+      - with_quic
+      - with_dhcp
+      - with_wireguard
+      - with_utls
+      - with_acme
+      - with_clash_api
+      - with_tailscale
+    env:
+      - CGO_ENABLED=0
+      - GOROOT={{ .Env.GOPATH }}/go_legacy
+    tool: "{{ .Env.GOPATH }}/go_legacy/bin/go"
+    targets:
+      - windows_amd64_v1
+      - windows_386
+  - id: android
+    <<: *template
+    env:
+      - CGO_ENABLED=1
+      - GOTOOLCHAIN=local
+    overrides:
+      - goos: android
+        goarch: arm
+        goarm: 7
+        env:
+          - CC=armv7a-linux-androideabi21-clang
+          - CXX=armv7a-linux-androideabi21-clang++
+      - goos: android
+        goarch: arm64
+        env:
+          - CC=aarch64-linux-android21-clang
+          - CXX=aarch64-linux-android21-clang++
+      - goos: android
+        goarch: 386
+        env:
+          - CC=i686-linux-android21-clang
+          - CXX=i686-linux-android21-clang++
+      - goos: android
+        goarch: amd64
+        goamd64: v1
+        env:
+          - CC=x86_64-linux-android21-clang
+          - CXX=x86_64-linux-android21-clang++
+    targets:
+      - android_arm_7
+      - android_arm64
+      - android_386
+      - android_amd64
+archives:
+  - &template
+    id: archive
+    builds:
+      - main
+      - android
+    formats:
+      - tar.gz
+    format_overrides:
+      - goos: windows
+        formats:
+          - zip
+    wrap_in_directory: true
+    files:
+      - LICENSE
+    name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}{{ if and .Mips (not (eq .Mips "hardfloat")) }}_{{ .Mips }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}'
+  - id: archive-legacy
+    <<: *template
+    builds:
+      - legacy
+    name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}-legacy'
+nfpms:
+  - id: package
+    package_name: sing-box
+    file_name_template: '{{ .ProjectName }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ with .Arm }}v{{ . }}{{ end }}{{ if and .Mips (not (eq .Mips "hardfloat")) }}_{{ .Mips }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}'
+    builds:
+      - main
+    homepage: https://sing-box.sagernet.org/
+    maintainer: nekohasekai <contact-git@sekai.icu>
+    description: The universal proxy platform.
+    license: GPLv3 or later
+    formats:
+      - deb
+      - rpm
+      - archlinux
+#      - apk
+#      - ipk
+    priority: extra
+    contents:
+      - src: release/config/config.json
+        dst: /etc/sing-box/config.json
+        type: "config|noreplace"
+
+      - src: release/config/sing-box.service
+        dst: /usr/lib/systemd/system/sing-box.service
+      - src: release/config/sing-box@.service
+        dst: /usr/lib/systemd/system/sing-box@.service
+      - src: release/config/sing-box.sysusers
+        dst: /usr/lib/sysusers.d/sing-box.conf
+      - src: release/config/sing-box.rules
+        dst: /usr/share/polkit-1/rules.d/sing-box.rules
+      - src: release/config/sing-box-split-dns.xml
+        dst: /usr/share/dbus-1/system.d/sing-box-split-dns.conf
+
+      - src: release/completions/sing-box.bash
+        dst: /usr/share/bash-completion/completions/sing-box.bash
+      - src: release/completions/sing-box.fish
+        dst: /usr/share/fish/vendor_completions.d/sing-box.fish
+      - src: release/completions/sing-box.zsh
+        dst: /usr/share/zsh/site-functions/_sing-box
+
+      - src: LICENSE
+        dst: /usr/share/licenses/sing-box/LICENSE
+    deb:
+      signature:
+        key_file: "{{ .Env.NFPM_KEY_PATH }}"
+      fields:
+        Bugs: https://github.com/SagerNet/sing-box/issues
+    rpm:
+      signature:
+        key_file: "{{ .Env.NFPM_KEY_PATH }}"
+    overrides:
+      apk:
+        contents:
+          - src: release/config/config.json
+            dst: /etc/sing-box/config.json
+            type: config
+
+          - src: release/config/sing-box.initd
+            dst: /etc/init.d/sing-box
+
+          - src: release/completions/sing-box.bash
+            dst: /usr/share/bash-completion/completions/sing-box.bash
+          - src: release/completions/sing-box.fish
+            dst: /usr/share/fish/vendor_completions.d/sing-box.fish
+          - src: release/completions/sing-box.zsh
+            dst: /usr/share/zsh/site-functions/_sing-box
+
+          - src: LICENSE
+            dst: /usr/share/licenses/sing-box/LICENSE
+      ipk:
+        contents:
+          - src: release/config/config.json
+            dst: /etc/sing-box/config.json
+            type: config
+
+          - src: release/config/openwrt.init
+            dst: /etc/init.d/sing-box
+          - src: release/config/openwrt.conf
+            dst: /etc/config/sing-box
+source:
+  enabled: false
+  name_template: '{{ .ProjectName }}-{{ .Version }}.source'
+  prefix_template: '{{ .ProjectName }}-{{ .Version }}/'
+checksum:
+  disable: true
+  name_template: '{{ .ProjectName }}-{{ .Version }}.checksum'
+signs:
+  - artifacts: checksum
+release:
+  github:
+    owner: SagerNet
+    name: sing-box
+  draft: true
+  prerelease: auto
+  mode: replace
+  ids:
+    - archive
+    - package
+  skip_upload: true
+partial:
+  by: target

Dockerfile

@@ -13,9 +13,9 @@ RUN set -ex \
     && export COMMIT=$(git rev-parse --short HEAD) \
     && export VERSION=$(go run ./cmd/internal/read_tag) \
     && go build -v -trimpath -tags \
-        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0" \
+        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale" \
         -o /go/bin/sing-box \
-        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid= -checklinkname=0" \
+        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid=" \
         ./cmd/sing-box
 FROM --platform=$TARGETPLATFORM alpine AS dist
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"

Makefile

@@ -1,12 +1,12 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
-TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0
+TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
 VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run github.com/sagernet/sing-box/cmd/internal/read_tag@latest)
 
-PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid= -checklinkname=0"
+PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
 MAIN_PARAMS = $(PARAMS) -tags "$(TAGS)"
 MAIN = ./cmd/sing-box
 PREFIX ?= $(shell go env GOPATH)
@@ -38,7 +38,7 @@ fmt:
 	@gci write --custom-order -s standard -s "prefix(github.com/sagernet/)" -s "default" .
 
 fmt_install:
-	go install -v mvdan.cc/gofumpt@v0.8.0
+	go install -v mvdan.cc/gofumpt@latest
 	go install -v github.com/daixiang0/gci@latest
 
 lint:
@@ -49,7 +49,7 @@ lint:
 	GOOS=freebsd golangci-lint run ./...
 
 lint_install:
-	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.4.0
+	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 
 proto:
 	@go run ./cmd/internal/protogen

adapter/dns.go

@@ -27,8 +27,6 @@ type DNSClient interface {
 	Start()
 	Exchange(ctx context.Context, transport DNSTransport, message *dns.Msg, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) (*dns.Msg, error)
 	Lookup(ctx context.Context, transport DNSTransport, domain string, options DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error)
-	LookupCache(domain string, strategy C.DomainStrategy) ([]netip.Addr, bool)
-	ExchangeCache(ctx context.Context, message *dns.Msg) (*dns.Msg, bool)
 	ClearCache()
 }
 

adapter/network.go

@@ -10,7 +10,6 @@ import (
 
 type NetworkManager interface {
 	Lifecycle
-	Initialize(ruleSets []RuleSet)
 	InterfaceFinder() control.InterfaceFinder
 	UpdateInterfaces() error
 	DefaultNetworkInterface() *NetworkInterface
@@ -25,10 +24,9 @@ type NetworkManager interface {
 	NetworkMonitor() tun.NetworkUpdateMonitor
 	InterfaceMonitor() tun.DefaultInterfaceMonitor
 	PackageManager() tun.PackageManager
-	NeedWIFIState() bool
 	WIFIState() WIFIState
-	UpdateWIFIState()
 	ResetNetwork()
+	UpdateWIFIState()
 }
 
 type NetworkOptions struct {

adapter/outbound.go

@@ -2,12 +2,9 @@ package adapter
 
 import (
 	"context"
-	"net/netip"
-	"time"
 
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing-tun"
 	N "github.com/sagernet/sing/common/network"
 )
 
@@ -21,17 +18,6 @@ type Outbound interface {
 	N.Dialer
 }
 
-type OutboundWithPreferredRoutes interface {
-	Outbound
-	PreferredDomain(domain string) bool
-	PreferredAddress(address netip.Addr) bool
-}
-
-type DirectRouteOutbound interface {
-	Outbound
-	NewDirectRouteConnection(metadata InboundContext, routeContext tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error)
-}
-
 type OutboundRegistry interface {
 	option.OutboundOptionsRegistry
 	CreateOutbound(ctx context.Context, router Router, logger log.ContextLogger, tag string, outboundType string, options any) (Outbound, error)

adapter/router.go

@@ -6,10 +6,8 @@ import (
 	"net"
 	"net/http"
 	"sync"
-	"time"
 
 	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-tun"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/ntp"
@@ -21,9 +19,10 @@ import (
 type Router interface {
 	Lifecycle
 	ConnectionRouter
-	PreMatch(metadata InboundContext, context tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error)
+	PreMatch(metadata InboundContext) error
 	ConnectionRouterEx
 	RuleSet(tag string) (RuleSet, bool)
+	NeedWIFIState() bool
 	Rules() []Rule
 	AppendTracker(tracker ConnectionTracker)
 	ResetNetwork()

box.go

@@ -184,7 +184,7 @@ func New(options Options) (*Box, error) {
 	service.MustRegister[adapter.ServiceManager](ctx, serviceManager)
 	dnsRouter := dns.NewRouter(ctx, logFactory, dnsOptions)
 	service.MustRegister[adapter.DNSRouter](ctx, dnsRouter)
-	networkManager, err := route.NewNetworkManager(ctx, logFactory.NewLogger("network"), routeOptions, dnsOptions)
+	networkManager, err := route.NewNetworkManager(ctx, logFactory.NewLogger("network"), routeOptions)
 	if err != nil {
 		return nil, E.Cause(err, "initialize network manager")
 	}
@@ -323,14 +323,13 @@ func New(options Options) (*Box, error) {
 			option.DirectOutboundOptions{},
 		)
 	})
-	dnsTransportManager.Initialize(func() (adapter.DNSTransport, error) {
-		return local.NewTransport(
+	dnsTransportManager.Initialize(common.Must1(
+		local.NewTransport(
 			ctx,
 			logFactory.NewLogger("dns/local"),
 			"local",
 			option.LocalDNSServerOptions{},
-		)
-	})
+		)))
 	if platformInterface != nil {
 		err = platformInterface.Initialize(networkManager)
 		if err != nil {

cmd/internal/build_libbox/main.go

@@ -46,7 +46,7 @@ var (
 	sharedFlags []string
 	debugFlags  []string
 	sharedTags  []string
-	macOSTags   []string
+	darwinTags  []string
 	memcTags    []string
 	notMemcTags []string
 	debugTags   []string
@@ -59,11 +59,11 @@ func init() {
 	if err != nil {
 		currentTag = "unknown"
 	}
-	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=  -checklinkname=0")
-	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -checklinkname=0")
+	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=")
+	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
 
-	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack", "badlinkname", "tfogo_checklinkname0")
-	macOSTags = append(macOSTags, "with_dhcp")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack")
+	darwinTags = append(darwinTags, "with_dhcp")
 	memcTags = append(memcTags, "with_tailscale")
 	notMemcTags = append(notMemcTags, "with_low_memory")
 	debugTags = append(debugTags, "debug")
@@ -107,8 +107,10 @@ func buildAndroid() {
 	}
 
 	if !debugEnabled {
+		sharedFlags[3] = sharedFlags[3] + " -checklinkname=0"
 		args = append(args, sharedFlags...)
 	} else {
+		debugFlags[1] = debugFlags[1] + " -checklinkname=0"
 		args = append(args, debugFlags...)
 	}
 
@@ -158,9 +160,7 @@ func buildApple() {
 		"-tags-not-macos=with_low_memory",
 	}
 	if !withTailscale {
-		args = append(args, "-tags-macos="+strings.Join(append(macOSTags, memcTags...), ","))
-	} else {
-		args = append(args, "-tags-macos="+strings.Join(macOSTags, ","))
+		args = append(args, "-tags-macos="+strings.Join(memcTags, ","))
 	}
 
 	if !debugEnabled {
@@ -169,7 +169,7 @@ func buildApple() {
 		args = append(args, debugFlags...)
 	}
 
-	tags := sharedTags
+	tags := append(sharedTags, darwinTags...)
 	if withTailscale {
 		tags = append(tags, memcTags...)
 	}

cmd/sing-box/cmd_rule_set_compile.go

@@ -6,10 +6,8 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/common/srs"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing-box/route/rule"
 	"github.com/sagernet/sing/common/json"
 
 	"github.com/spf13/cobra"
@@ -71,7 +69,7 @@ func compileRuleSet(sourcePath string) error {
 	if err != nil {
 		return err
 	}
-	err = srs.Write(outputFile, plainRuleSet.Options, downgradeRuleSetVersion(plainRuleSet.Version, plainRuleSet.Options))
+	err = srs.Write(outputFile, plainRuleSet.Options, plainRuleSet.Version)
 	if err != nil {
 		outputFile.Close()
 		os.Remove(outputPath)
@@ -80,18 +78,3 @@ func compileRuleSet(sourcePath string) error {
 	outputFile.Close()
 	return nil
 }
-
-func downgradeRuleSetVersion(version uint8, options option.PlainRuleSet) uint8 {
-	if version == C.RuleSetVersion4 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
-		return rule.NetworkInterfaceAddress != nil && rule.NetworkInterfaceAddress.Size() > 0 ||
-			len(rule.DefaultInterfaceAddress) > 0
-	}) {
-		version = C.RuleSetVersion3
-	}
-	if version == C.RuleSetVersion3 && !rule.HasHeadlessRule(options.Rules, func(rule option.DefaultHeadlessRule) bool {
-		return len(rule.NetworkType) > 0 || rule.NetworkIsExpensive || rule.NetworkIsConstrained
-	}) {
-		version = C.RuleSetVersion2
-	}
-	return version
-}

cmd/sing-box/cmd_tools_fetch_http3.go

@@ -22,7 +22,7 @@ func initializeHTTP3Client(instance *box.Box) error {
 	}
 	http3Client = &http.Client{
 		Transport: &http3.Transport{
-			Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (*quic.Conn, error) {
+			Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.EarlyConnection, error) {
 				destination := M.ParseSocksaddr(addr)
 				udpConn, dErr := dialer.DialContext(ctx, N.NetworkUDP, destination)
 				if dErr != nil {

common/badtls/raw_conn.go

@@ -1,176 +0,0 @@
-//go:build go1.25 && badlinkname
-
-package badtls
-
-import (
-	"bytes"
-	"os"
-	"reflect"
-	"sync/atomic"
-	"unsafe"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/tls"
-)
-
-type RawConn struct {
-	pointer unsafe.Pointer
-	methods *Methods
-
-	IsClient            *bool
-	IsHandshakeComplete *atomic.Bool
-	Vers                *uint16
-	CipherSuite         *uint16
-
-	RawInput *bytes.Buffer
-	Input    *bytes.Reader
-	Hand     *bytes.Buffer
-
-	CloseNotifySent *bool
-	CloseNotifyErr  *error
-
-	In  *RawHalfConn
-	Out *RawHalfConn
-
-	BytesSent   *int64
-	PacketsSent *int64
-
-	ActiveCall *atomic.Int32
-	Tmp        *[16]byte
-}
-
-func NewRawConn(rawTLSConn tls.Conn) (*RawConn, error) {
-	var (
-		pointer unsafe.Pointer
-		methods *Methods
-		loaded  bool
-	)
-	for _, tlsCreator := range methodRegistry {
-		pointer, methods, loaded = tlsCreator(rawTLSConn)
-		if loaded {
-			break
-		}
-	}
-	if !loaded {
-		return nil, os.ErrInvalid
-	}
-
-	conn := &RawConn{
-		pointer: pointer,
-		methods: methods,
-	}
-
-	rawConn := reflect.Indirect(reflect.ValueOf(rawTLSConn))
-
-	rawIsClient := rawConn.FieldByName("isClient")
-	if !rawIsClient.IsValid() || rawIsClient.Kind() != reflect.Bool {
-		return nil, E.New("invalid Conn.isClient")
-	}
-	conn.IsClient = (*bool)(unsafe.Pointer(rawIsClient.UnsafeAddr()))
-
-	rawIsHandshakeComplete := rawConn.FieldByName("isHandshakeComplete")
-	if !rawIsHandshakeComplete.IsValid() || rawIsHandshakeComplete.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.isHandshakeComplete")
-	}
-	conn.IsHandshakeComplete = (*atomic.Bool)(unsafe.Pointer(rawIsHandshakeComplete.UnsafeAddr()))
-
-	rawVers := rawConn.FieldByName("vers")
-	if !rawVers.IsValid() || rawVers.Kind() != reflect.Uint16 {
-		return nil, E.New("invalid Conn.vers")
-	}
-	conn.Vers = (*uint16)(unsafe.Pointer(rawVers.UnsafeAddr()))
-
-	rawCipherSuite := rawConn.FieldByName("cipherSuite")
-	if !rawCipherSuite.IsValid() || rawCipherSuite.Kind() != reflect.Uint16 {
-		return nil, E.New("invalid Conn.cipherSuite")
-	}
-	conn.CipherSuite = (*uint16)(unsafe.Pointer(rawCipherSuite.UnsafeAddr()))
-
-	rawRawInput := rawConn.FieldByName("rawInput")
-	if !rawRawInput.IsValid() || rawRawInput.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.rawInput")
-	}
-	conn.RawInput = (*bytes.Buffer)(unsafe.Pointer(rawRawInput.UnsafeAddr()))
-
-	rawInput := rawConn.FieldByName("input")
-	if !rawInput.IsValid() || rawInput.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.input")
-	}
-	conn.Input = (*bytes.Reader)(unsafe.Pointer(rawInput.UnsafeAddr()))
-
-	rawHand := rawConn.FieldByName("hand")
-	if !rawHand.IsValid() || rawHand.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.hand")
-	}
-	conn.Hand = (*bytes.Buffer)(unsafe.Pointer(rawHand.UnsafeAddr()))
-
-	rawCloseNotifySent := rawConn.FieldByName("closeNotifySent")
-	if !rawCloseNotifySent.IsValid() || rawCloseNotifySent.Kind() != reflect.Bool {
-		return nil, E.New("invalid Conn.closeNotifySent")
-	}
-	conn.CloseNotifySent = (*bool)(unsafe.Pointer(rawCloseNotifySent.UnsafeAddr()))
-
-	rawCloseNotifyErr := rawConn.FieldByName("closeNotifyErr")
-	if !rawCloseNotifyErr.IsValid() || rawCloseNotifyErr.Kind() != reflect.Interface {
-		return nil, E.New("invalid Conn.closeNotifyErr")
-	}
-	conn.CloseNotifyErr = (*error)(unsafe.Pointer(rawCloseNotifyErr.UnsafeAddr()))
-
-	rawIn := rawConn.FieldByName("in")
-	if !rawIn.IsValid() || rawIn.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.in")
-	}
-	halfIn, err := NewRawHalfConn(rawIn, methods)
-	if err != nil {
-		return nil, E.Cause(err, "invalid Conn.in")
-	}
-	conn.In = halfIn
-
-	rawOut := rawConn.FieldByName("out")
-	if !rawOut.IsValid() || rawOut.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.out")
-	}
-	halfOut, err := NewRawHalfConn(rawOut, methods)
-	if err != nil {
-		return nil, E.Cause(err, "invalid Conn.out")
-	}
-	conn.Out = halfOut
-
-	rawBytesSent := rawConn.FieldByName("bytesSent")
-	if !rawBytesSent.IsValid() || rawBytesSent.Kind() != reflect.Int64 {
-		return nil, E.New("invalid Conn.bytesSent")
-	}
-	conn.BytesSent = (*int64)(unsafe.Pointer(rawBytesSent.UnsafeAddr()))
-
-	rawPacketsSent := rawConn.FieldByName("packetsSent")
-	if !rawPacketsSent.IsValid() || rawPacketsSent.Kind() != reflect.Int64 {
-		return nil, E.New("invalid Conn.packetsSent")
-	}
-	conn.PacketsSent = (*int64)(unsafe.Pointer(rawPacketsSent.UnsafeAddr()))
-
-	rawActiveCall := rawConn.FieldByName("activeCall")
-	if !rawActiveCall.IsValid() || rawActiveCall.Kind() != reflect.Struct {
-		return nil, E.New("invalid Conn.activeCall")
-	}
-	conn.ActiveCall = (*atomic.Int32)(unsafe.Pointer(rawActiveCall.UnsafeAddr()))
-
-	rawTmp := rawConn.FieldByName("tmp")
-	if !rawTmp.IsValid() || rawTmp.Kind() != reflect.Array || rawTmp.Len() != 16 || rawTmp.Type().Elem().Kind() != reflect.Uint8 {
-		return nil, E.New("invalid Conn.tmp")
-	}
-	conn.Tmp = (*[16]byte)(unsafe.Pointer(rawTmp.UnsafeAddr()))
-
-	return conn, nil
-}
-
-func (c *RawConn) ReadRecord() error {
-	return c.methods.readRecord(c.pointer)
-}
-
-func (c *RawConn) HandlePostHandshakeMessage() error {
-	return c.methods.handlePostHandshakeMessage(c.pointer)
-}
-
-func (c *RawConn) WriteRecordLocked(typ uint16, data []byte) (int, error) {
-	return c.methods.writeRecordLocked(c.pointer, typ, data)
-}

common/badtls/raw_half_conn.go

@@ -1,121 +0,0 @@
-//go:build go1.25 && badlinkname
-
-package badtls
-
-import (
-	"hash"
-	"reflect"
-	"sync"
-	"unsafe"
-
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-type RawHalfConn struct {
-	pointer unsafe.Pointer
-	methods *Methods
-	*sync.Mutex
-	Err           *error
-	Version       *uint16
-	Cipher        *any
-	Seq           *[8]byte
-	ScratchBuf    *[13]byte
-	TrafficSecret *[]byte
-	Mac           *hash.Hash
-	RawKey        *[]byte
-	RawIV         *[]byte
-	RawMac        *[]byte
-}
-
-func NewRawHalfConn(rawHalfConn reflect.Value, methods *Methods) (*RawHalfConn, error) {
-	halfConn := &RawHalfConn{
-		pointer: (unsafe.Pointer)(rawHalfConn.UnsafeAddr()),
-		methods: methods,
-	}
-
-	rawMutex := rawHalfConn.FieldByName("Mutex")
-	if !rawMutex.IsValid() || rawMutex.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid halfConn.Mutex")
-	}
-	halfConn.Mutex = (*sync.Mutex)(unsafe.Pointer(rawMutex.UnsafeAddr()))
-
-	rawErr := rawHalfConn.FieldByName("err")
-	if !rawErr.IsValid() || rawErr.Kind() != reflect.Interface {
-		return nil, E.New("badtls: invalid halfConn.err")
-	}
-	halfConn.Err = (*error)(unsafe.Pointer(rawErr.UnsafeAddr()))
-
-	rawVersion := rawHalfConn.FieldByName("version")
-	if !rawVersion.IsValid() || rawVersion.Kind() != reflect.Uint16 {
-		return nil, E.New("badtls: invalid halfConn.version")
-	}
-	halfConn.Version = (*uint16)(unsafe.Pointer(rawVersion.UnsafeAddr()))
-
-	rawCipher := rawHalfConn.FieldByName("cipher")
-	if !rawCipher.IsValid() || rawCipher.Kind() != reflect.Interface {
-		return nil, E.New("badtls: invalid halfConn.cipher")
-	}
-	halfConn.Cipher = (*any)(unsafe.Pointer(rawCipher.UnsafeAddr()))
-
-	rawSeq := rawHalfConn.FieldByName("seq")
-	if !rawSeq.IsValid() || rawSeq.Kind() != reflect.Array || rawSeq.Len() != 8 || rawSeq.Type().Elem().Kind() != reflect.Uint8 {
-		return nil, E.New("badtls: invalid halfConn.seq")
-	}
-	halfConn.Seq = (*[8]byte)(unsafe.Pointer(rawSeq.UnsafeAddr()))
-
-	rawScratchBuf := rawHalfConn.FieldByName("scratchBuf")
-	if !rawScratchBuf.IsValid() || rawScratchBuf.Kind() != reflect.Array || rawScratchBuf.Len() != 13 || rawScratchBuf.Type().Elem().Kind() != reflect.Uint8 {
-		return nil, E.New("badtls: invalid halfConn.scratchBuf")
-	}
-	halfConn.ScratchBuf = (*[13]byte)(unsafe.Pointer(rawScratchBuf.UnsafeAddr()))
-
-	rawTrafficSecret := rawHalfConn.FieldByName("trafficSecret")
-	if !rawTrafficSecret.IsValid() || rawTrafficSecret.Kind() != reflect.Slice || rawTrafficSecret.Type().Elem().Kind() != reflect.Uint8 {
-		return nil, E.New("badtls: invalid halfConn.trafficSecret")
-	}
-	halfConn.TrafficSecret = (*[]byte)(unsafe.Pointer(rawTrafficSecret.UnsafeAddr()))
-
-	rawMac := rawHalfConn.FieldByName("mac")
-	if !rawMac.IsValid() || rawMac.Kind() != reflect.Interface {
-		return nil, E.New("badtls: invalid halfConn.mac")
-	}
-	halfConn.Mac = (*hash.Hash)(unsafe.Pointer(rawMac.UnsafeAddr()))
-
-	rawKey := rawHalfConn.FieldByName("rawKey")
-	if rawKey.IsValid() {
-		if /*!rawKey.IsValid() || */ rawKey.Kind() != reflect.Slice || rawKey.Type().Elem().Kind() != reflect.Uint8 {
-			return nil, E.New("badtls: invalid halfConn.rawKey")
-		}
-		halfConn.RawKey = (*[]byte)(unsafe.Pointer(rawKey.UnsafeAddr()))
-
-		rawIV := rawHalfConn.FieldByName("rawIV")
-		if !rawIV.IsValid() || rawIV.Kind() != reflect.Slice || rawIV.Type().Elem().Kind() != reflect.Uint8 {
-			return nil, E.New("badtls: invalid halfConn.rawIV")
-		}
-		halfConn.RawIV = (*[]byte)(unsafe.Pointer(rawIV.UnsafeAddr()))
-
-		rawMAC := rawHalfConn.FieldByName("rawMac")
-		if !rawMAC.IsValid() || rawMAC.Kind() != reflect.Slice || rawMAC.Type().Elem().Kind() != reflect.Uint8 {
-			return nil, E.New("badtls: invalid halfConn.rawMac")
-		}
-		halfConn.RawMac = (*[]byte)(unsafe.Pointer(rawMAC.UnsafeAddr()))
-	}
-
-	return halfConn, nil
-}
-
-func (hc *RawHalfConn) Decrypt(record []byte) ([]byte, uint8, error) {
-	return hc.methods.decrypt(hc.pointer, record)
-}
-
-func (hc *RawHalfConn) SetErrorLocked(err error) error {
-	return hc.methods.setErrorLocked(hc.pointer, err)
-}
-
-func (hc *RawHalfConn) SetTrafficSecret(suite unsafe.Pointer, level int, secret []byte) {
-	hc.methods.setTrafficSecret(hc.pointer, suite, level, secret)
-}
-
-func (hc *RawHalfConn) ExplicitNonceLen() int {
-	return hc.methods.explicitNonceLen(hc.pointer)
-}

common/badtls/read_wait.go

@@ -1,9 +1,18 @@
-//go:build go1.25 && badlinkname
+//go:build go1.21 && !without_badtls
 
 package badtls
 
 import (
+	"bytes"
+	"context"
+	"net"
+	"os"
+	"reflect"
+	"sync"
+	"unsafe"
+
 	"github.com/sagernet/sing/common/buf"
+	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/tls"
 )
@@ -12,21 +21,63 @@ var _ N.ReadWaiter = (*ReadWaitConn)(nil)
 
 type ReadWaitConn struct {
 	tls.Conn
-	rawConn         *RawConn
-	readWaitOptions N.ReadWaitOptions
+	halfAccess                    *sync.Mutex
+	rawInput                      *bytes.Buffer
+	input                         *bytes.Reader
+	hand                          *bytes.Buffer
+	readWaitOptions               N.ReadWaitOptions
+	tlsReadRecord                 func() error
+	tlsHandlePostHandshakeMessage func() error
 }
 
 func NewReadWaitConn(conn tls.Conn) (tls.Conn, error) {
-	if _, isReadWaitConn := conn.(N.ReadWaiter); isReadWaitConn {
-		return conn, nil
+	var (
+		loaded                        bool
+		tlsReadRecord                 func() error
+		tlsHandlePostHandshakeMessage func() error
+	)
+	for _, tlsCreator := range tlsRegistry {
+		loaded, tlsReadRecord, tlsHandlePostHandshakeMessage = tlsCreator(conn)
+		if loaded {
+			break
+		}
 	}
-	rawConn, err := NewRawConn(conn)
-	if err != nil {
-		return nil, err
+	if !loaded {
+		return nil, os.ErrInvalid
 	}
+	rawConn := reflect.Indirect(reflect.ValueOf(conn))
+	rawHalfConn := rawConn.FieldByName("in")
+	if !rawHalfConn.IsValid() || rawHalfConn.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid half conn")
+	}
+	rawHalfMutex := rawHalfConn.FieldByName("Mutex")
+	if !rawHalfMutex.IsValid() || rawHalfMutex.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid half mutex")
+	}
+	halfAccess := (*sync.Mutex)(unsafe.Pointer(rawHalfMutex.UnsafeAddr()))
+	rawRawInput := rawConn.FieldByName("rawInput")
+	if !rawRawInput.IsValid() || rawRawInput.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid raw input")
+	}
+	rawInput := (*bytes.Buffer)(unsafe.Pointer(rawRawInput.UnsafeAddr()))
+	rawInput0 := rawConn.FieldByName("input")
+	if !rawInput0.IsValid() || rawInput0.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid input")
+	}
+	input := (*bytes.Reader)(unsafe.Pointer(rawInput0.UnsafeAddr()))
+	rawHand := rawConn.FieldByName("hand")
+	if !rawHand.IsValid() || rawHand.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid hand")
+	}
+	hand := (*bytes.Buffer)(unsafe.Pointer(rawHand.UnsafeAddr()))
 	return &ReadWaitConn{
-		Conn:    conn,
-		rawConn: rawConn,
+		Conn:                          conn,
+		halfAccess:                    halfAccess,
+		rawInput:                      rawInput,
+		input:                         input,
+		hand:                          hand,
+		tlsReadRecord:                 tlsReadRecord,
+		tlsHandlePostHandshakeMessage: tlsHandlePostHandshakeMessage,
 	}, nil
 }
 
@@ -36,36 +87,36 @@ func (c *ReadWaitConn) InitializeReadWaiter(options N.ReadWaitOptions) (needCopy
 }
 
 func (c *ReadWaitConn) WaitReadBuffer() (buffer *buf.Buffer, err error) {
-	//err = c.HandshakeContext(context.Background())
-	//if err != nil {
-	//	return
-	//}
-	c.rawConn.In.Lock()
-	defer c.rawConn.In.Unlock()
-	for c.rawConn.Input.Len() == 0 {
-		err = c.rawConn.ReadRecord()
+	err = c.HandshakeContext(context.Background())
+	if err != nil {
+		return
+	}
+	c.halfAccess.Lock()
+	defer c.halfAccess.Unlock()
+	for c.input.Len() == 0 {
+		err = c.tlsReadRecord()
 		if err != nil {
 			return
 		}
-		for c.rawConn.Hand.Len() > 0 {
-			err = c.rawConn.HandlePostHandshakeMessage()
+		for c.hand.Len() > 0 {
+			err = c.tlsHandlePostHandshakeMessage()
 			if err != nil {
 				return
 			}
 		}
 	}
 	buffer = c.readWaitOptions.NewBuffer()
-	n, err := c.rawConn.Input.Read(buffer.FreeBytes())
+	n, err := c.input.Read(buffer.FreeBytes())
 	if err != nil {
 		buffer.Release()
 		return
 	}
 	buffer.Truncate(n)
 
-	if n != 0 && c.rawConn.Input.Len() == 0 && c.rawConn.Input.Len() > 0 &&
-		// recordType(c.RawInput.Bytes()[0]) == recordTypeAlert {
-		c.rawConn.RawInput.Bytes()[0] == 21 {
-		_ = c.rawConn.ReadRecord()
+	if n != 0 && c.input.Len() == 0 && c.rawInput.Len() > 0 &&
+		// recordType(c.rawInput.Bytes()[0]) == recordTypeAlert {
+		c.rawInput.Bytes()[0] == 21 {
+		_ = c.tlsReadRecord()
 		// return n, err // will be io.EOF on closeNotify
 	}
 
@@ -80,3 +131,25 @@ func (c *ReadWaitConn) Upstream() any {
 func (c *ReadWaitConn) ReaderReplaceable() bool {
 	return true
 }
+
+var tlsRegistry []func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error)
+
+func init() {
+	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
+		tlsConn, loaded := conn.(*tls.STDConn)
+		if !loaded {
+			return
+		}
+		return true, func() error {
+				return stdTLSReadRecord(tlsConn)
+			}, func() error {
+				return stdTLSHandlePostHandshakeMessage(tlsConn)
+			}
+	})
+}
+
+//go:linkname stdTLSReadRecord crypto/tls.(*Conn).readRecord
+func stdTLSReadRecord(c *tls.STDConn) error
+
+//go:linkname stdTLSHandlePostHandshakeMessage crypto/tls.(*Conn).handlePostHandshakeMessage
+func stdTLSHandlePostHandshakeMessage(c *tls.STDConn) error

common/badtls/read_wait_stub.go

@@ -1,4 +1,4 @@
-//go:build !go1.25 || !badlinkname
+//go:build !go1.21 || without_badtls
 
 package badtls
 

common/badtls/read_wait_utls.go

@@ -0,0 +1,36 @@
+//go:build go1.21 && !without_badtls && with_utls
+
+package badtls
+
+import (
+	"net"
+	_ "unsafe"
+
+	"github.com/metacubex/utls"
+)
+
+func init() {
+	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
+		switch tlsConn := conn.(type) {
+		case *tls.UConn:
+			return true, func() error {
+					return utlsReadRecord(tlsConn.Conn)
+				}, func() error {
+					return utlsHandlePostHandshakeMessage(tlsConn.Conn)
+				}
+		case *tls.Conn:
+			return true, func() error {
+					return utlsReadRecord(tlsConn)
+				}, func() error {
+					return utlsHandlePostHandshakeMessage(tlsConn)
+				}
+		}
+		return
+	})
+}
+
+//go:linkname utlsReadRecord github.com/metacubex/utls.(*Conn).readRecord
+func utlsReadRecord(c *tls.Conn) error
+
+//go:linkname utlsHandlePostHandshakeMessage github.com/metacubex/utls.(*Conn).handlePostHandshakeMessage
+func utlsHandlePostHandshakeMessage(c *tls.Conn) error

common/badtls/registry.go

@@ -1,62 +0,0 @@
-//go:build go1.25 && badlinkname
-
-package badtls
-
-import (
-	"crypto/tls"
-	"net"
-	"unsafe"
-)
-
-type Methods struct {
-	readRecord                 func(c unsafe.Pointer) error
-	handlePostHandshakeMessage func(c unsafe.Pointer) error
-	writeRecordLocked          func(c unsafe.Pointer, typ uint16, data []byte) (int, error)
-
-	setErrorLocked   func(hc unsafe.Pointer, err error) error
-	decrypt          func(hc unsafe.Pointer, record []byte) ([]byte, uint8, error)
-	setTrafficSecret func(hc unsafe.Pointer, suite unsafe.Pointer, level int, secret []byte)
-	explicitNonceLen func(hc unsafe.Pointer) int
-}
-
-var methodRegistry []func(conn net.Conn) (unsafe.Pointer, *Methods, bool)
-
-func init() {
-	methodRegistry = append(methodRegistry, func(conn net.Conn) (unsafe.Pointer, *Methods, bool) {
-		tlsConn, loaded := conn.(*tls.Conn)
-		if !loaded {
-			return nil, nil, false
-		}
-		return unsafe.Pointer(tlsConn), &Methods{
-			readRecord:                 stdTLSReadRecord,
-			handlePostHandshakeMessage: stdTLSHandlePostHandshakeMessage,
-			writeRecordLocked:          stdWriteRecordLocked,
-
-			setErrorLocked:   stdSetErrorLocked,
-			decrypt:          stdDecrypt,
-			setTrafficSecret: stdSetTrafficSecret,
-			explicitNonceLen: stdExplicitNonceLen,
-		}, true
-	})
-}
-
-//go:linkname stdTLSReadRecord crypto/tls.(*Conn).readRecord
-func stdTLSReadRecord(c unsafe.Pointer) error
-
-//go:linkname stdTLSHandlePostHandshakeMessage crypto/tls.(*Conn).handlePostHandshakeMessage
-func stdTLSHandlePostHandshakeMessage(c unsafe.Pointer) error
-
-//go:linkname stdWriteRecordLocked crypto/tls.(*Conn).writeRecordLocked
-func stdWriteRecordLocked(c unsafe.Pointer, typ uint16, data []byte) (int, error)
-
-//go:linkname stdSetErrorLocked crypto/tls.(*halfConn).setErrorLocked
-func stdSetErrorLocked(hc unsafe.Pointer, err error) error
-
-//go:linkname stdDecrypt crypto/tls.(*halfConn).decrypt
-func stdDecrypt(hc unsafe.Pointer, record []byte) ([]byte, uint8, error)
-
-//go:linkname stdSetTrafficSecret crypto/tls.(*halfConn).setTrafficSecret
-func stdSetTrafficSecret(hc unsafe.Pointer, suite unsafe.Pointer, level int, secret []byte)
-
-//go:linkname stdExplicitNonceLen crypto/tls.(*halfConn).explicitNonceLen
-func stdExplicitNonceLen(hc unsafe.Pointer) int

common/badtls/registry_utls.go

@@ -1,56 +0,0 @@
-//go:build go1.25 && badlinkname
-
-package badtls
-
-import (
-	"net"
-	"unsafe"
-
-	N "github.com/sagernet/sing/common/network"
-
-	"github.com/metacubex/utls"
-)
-
-func init() {
-	methodRegistry = append(methodRegistry, func(conn net.Conn) (unsafe.Pointer, *Methods, bool) {
-		var pointer unsafe.Pointer
-		if uConn, loaded := N.CastReader[*tls.Conn](conn); loaded {
-			pointer = unsafe.Pointer(uConn)
-		} else if uConn, loaded := N.CastReader[*tls.UConn](conn); loaded {
-			pointer = unsafe.Pointer(uConn.Conn)
-		} else {
-			return nil, nil, false
-		}
-		return pointer, &Methods{
-			readRecord:                 utlsReadRecord,
-			handlePostHandshakeMessage: utlsHandlePostHandshakeMessage,
-			writeRecordLocked:          utlsWriteRecordLocked,
-
-			setErrorLocked:   utlsSetErrorLocked,
-			decrypt:          utlsDecrypt,
-			setTrafficSecret: utlsSetTrafficSecret,
-			explicitNonceLen: utlsExplicitNonceLen,
-		}, true
-	})
-}
-
-//go:linkname utlsReadRecord github.com/metacubex/utls.(*Conn).readRecord
-func utlsReadRecord(c unsafe.Pointer) error
-
-//go:linkname utlsHandlePostHandshakeMessage github.com/metacubex/utls.(*Conn).handlePostHandshakeMessage
-func utlsHandlePostHandshakeMessage(c unsafe.Pointer) error
-
-//go:linkname utlsWriteRecordLocked github.com/metacubex/utls.(*Conn).writeRecordLocked
-func utlsWriteRecordLocked(hc unsafe.Pointer, typ uint16, data []byte) (int, error)
-
-//go:linkname utlsSetErrorLocked github.com/metacubex/utls.(*halfConn).setErrorLocked
-func utlsSetErrorLocked(hc unsafe.Pointer, err error) error
-
-//go:linkname utlsDecrypt github.com/metacubex/utls.(*halfConn).decrypt
-func utlsDecrypt(hc unsafe.Pointer, record []byte) ([]byte, uint8, error)
-
-//go:linkname utlsSetTrafficSecret github.com/metacubex/utls.(*halfConn).setTrafficSecret
-func utlsSetTrafficSecret(hc unsafe.Pointer, suite unsafe.Pointer, level int, secret []byte)
-
-//go:linkname utlsExplicitNonceLen github.com/metacubex/utls.(*halfConn).explicitNonceLen
-func utlsExplicitNonceLen(hc unsafe.Pointer) int

common/badversion/version.go

@@ -5,8 +5,6 @@ import (
 	"strings"
 
 	F "github.com/sagernet/sing/common/format"
-
-	"golang.org/x/mod/semver"
 )
 
 type Version struct {
@@ -18,19 +16,7 @@ type Version struct {
 	PreReleaseVersion    int
 }
 
-func (v Version) LessThan(anotherVersion Version) bool {
-	return !v.GreaterThanOrEqual(anotherVersion)
-}
-
-func (v Version) LessThanOrEqual(anotherVersion Version) bool {
-	return v == anotherVersion || anotherVersion.GreaterThan(v)
-}
-
-func (v Version) GreaterThanOrEqual(anotherVersion Version) bool {
-	return v == anotherVersion || v.GreaterThan(anotherVersion)
-}
-
-func (v Version) GreaterThan(anotherVersion Version) bool {
+func (v Version) After(anotherVersion Version) bool {
 	if v.Major > anotherVersion.Major {
 		return true
 	} else if v.Major < anotherVersion.Major {
@@ -58,29 +44,19 @@ func (v Version) GreaterThan(anotherVersion Version) bool {
 			} else if v.PreReleaseVersion < anotherVersion.PreReleaseVersion {
 				return false
 			}
-		}
-		preReleaseIdentifier := parsePreReleaseIdentifier(v.PreReleaseIdentifier)
-		anotherPreReleaseIdentifier := parsePreReleaseIdentifier(anotherVersion.PreReleaseIdentifier)
-		if preReleaseIdentifier < anotherPreReleaseIdentifier {
+		} else if v.PreReleaseIdentifier == "rc" && anotherVersion.PreReleaseIdentifier == "beta" {
 			return true
-		} else if preReleaseIdentifier > anotherPreReleaseIdentifier {
+		} else if v.PreReleaseIdentifier == "beta" && anotherVersion.PreReleaseIdentifier == "rc" {
+			return false
+		} else if v.PreReleaseIdentifier == "beta" && anotherVersion.PreReleaseIdentifier == "alpha" {
+			return true
+		} else if v.PreReleaseIdentifier == "alpha" && anotherVersion.PreReleaseIdentifier == "beta" {
 			return false
 		}
 	}
 	return false
 }
 
-func parsePreReleaseIdentifier(identifier string) int {
-	if strings.HasPrefix(identifier, "rc") {
-		return 1
-	} else if strings.HasPrefix(identifier, "beta") {
-		return 2
-	} else if strings.HasPrefix(identifier, "alpha") {
-		return 3
-	}
-	return 0
-}
-
 func (v Version) VersionString() string {
 	return F.ToString(v.Major, ".", v.Minor, ".", v.Patch)
 }
@@ -107,10 +83,6 @@ func (v Version) BadString() string {
 	return version
 }
 
-func IsValid(versionName string) bool {
-	return semver.IsValid("v" + versionName)
-}
-
 func Parse(versionName string) (version Version) {
 	if strings.HasPrefix(versionName, "v") {
 		versionName = versionName[1:]

common/badversion/version_test.go

@@ -10,9 +10,9 @@ func TestCompareVersion(t *testing.T) {
 	t.Parallel()
 	require.Equal(t, "1.3.0-beta.1", Parse("v1.3.0-beta1").String())
 	require.Equal(t, "1.3-beta1", Parse("v1.3.0-beta.1").BadString())
-	require.True(t, Parse("1.3.0").GreaterThan(Parse("1.3-beta1")))
-	require.True(t, Parse("1.3.0").GreaterThan(Parse("1.3.0-beta1")))
-	require.True(t, Parse("1.3.0-beta1").GreaterThan(Parse("1.3.0-alpha1")))
-	require.True(t, Parse("1.3.1").GreaterThan(Parse("1.3.0")))
-	require.True(t, Parse("1.4").GreaterThan(Parse("1.3")))
+	require.True(t, Parse("1.3.0").After(Parse("1.3-beta1")))
+	require.True(t, Parse("1.3.0").After(Parse("1.3.0-beta1")))
+	require.True(t, Parse("1.3.0-beta1").After(Parse("1.3.0-alpha1")))
+	require.True(t, Parse("1.3.1").After(Parse("1.3.0")))
+	require.True(t, Parse("1.4").After(Parse("1.3")))
 }

common/dialer/default.go

@@ -20,8 +20,6 @@ import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/service"
-
-	"github.com/database64128/tfo-go/v2"
 )
 
 var (
@@ -30,8 +28,8 @@ var (
 )
 
 type DefaultDialer struct {
-	dialer4                tfo.Dialer
-	dialer6                tfo.Dialer
+	dialer4                tcpDialer
+	dialer6                tcpDialer
 	udpDialer4             net.Dialer
 	udpDialer6             net.Dialer
 	udpListener            net.ListenConfig
@@ -143,18 +141,9 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 	} else {
 		dialer.Timeout = C.TCPConnectTimeout
 	}
-	if !options.DisableTCPKeepAlive {
-		keepIdle := time.Duration(options.TCPKeepAlive)
-		if keepIdle == 0 {
-			keepIdle = C.TCPKeepAliveInitial
-		}
-		keepInterval := time.Duration(options.TCPKeepAliveInterval)
-		if keepInterval == 0 {
-			keepInterval = C.TCPKeepAliveInterval
-		}
-		dialer.KeepAlive = keepIdle
-		dialer.Control = control.Append(dialer.Control, control.SetKeepAlivePeriod(keepIdle, keepInterval))
-	}
+	// TODO: Add an option to customize the keep alive period
+	dialer.KeepAlive = C.TCPKeepAliveInitial
+	dialer.Control = control.Append(dialer.Control, control.SetKeepAlivePeriod(C.TCPKeepAliveInitial, C.TCPKeepAliveInterval))
 	var udpFragment bool
 	if options.UDPFragment != nil {
 		udpFragment = *options.UDPFragment
@@ -188,10 +177,19 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		udpAddr6 = M.SocksaddrFrom(bindAddr, 0).String()
 	}
 	if options.TCPMultiPath {
-		dialer4.SetMultipathTCP(true)
+		if !go121Available {
+			return nil, E.New("MultiPath TCP requires go1.21, please recompile your binary.")
+		}
+		setMultiPathTCP(&dialer4)
+	}
+	tcpDialer4, err := newTCPDialer(dialer4, options.TCPFastOpen)
+	if err != nil {
+		return nil, err
+	}
+	tcpDialer6, err := newTCPDialer(dialer6, options.TCPFastOpen)
+	if err != nil {
+		return nil, err
 	}
-	tcpDialer4 := tfo.Dialer{Dialer: dialer4, DisableTFO: !options.TCPFastOpen}
-	tcpDialer6 := tfo.Dialer{Dialer: dialer6, DisableTFO: !options.TCPFastOpen}
 	return &DefaultDialer{
 		dialer4:                tcpDialer4,
 		dialer6:                tcpDialer6,
@@ -271,7 +269,7 @@ func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network strin
 	}
 	var dialer net.Dialer
 	if N.NetworkName(network) == N.NetworkTCP {
-		dialer = d.dialer4.Dialer
+		dialer = dialerFromTCPDialer(d.dialer4)
 	} else {
 		dialer = d.udpDialer4
 	}
@@ -317,14 +315,6 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 	}
 }
 
-func (d *DefaultDialer) DialerForICMPDestination(destination netip.Addr) net.Dialer {
-	if !destination.Is6() {
-		return d.dialer6.Dialer
-	} else {
-		return d.dialer4.Dialer
-	}
-}
-
 func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy *C.NetworkStrategy, interfaceType []C.InterfaceType, fallbackInterfaceType []C.InterfaceType, fallbackDelay time.Duration) (net.PacketConn, error) {
 	if strategy == nil {
 		strategy = d.networkStrategy
@@ -358,8 +348,18 @@ func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destina
 	return trackPacketConn(packetConn, nil)
 }
 
-func (d *DefaultDialer) WireGuardControl() control.Func {
-	return d.udpListener.Control
+func (d *DefaultDialer) ListenPacketCompat(network, address string) (net.PacketConn, error) {
+	udpListener := d.udpListener
+	udpListener.Control = control.Append(udpListener.Control, func(network, address string, conn syscall.RawConn) error {
+		for _, wgControlFn := range WgControlFns {
+			err := wgControlFn(network, address, conn)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+	return udpListener.ListenPacket(context.Background(), network, address)
 }
 
 func trackConn(conn net.Conn, err error) (net.Conn, error) {

common/dialer/default_go1.20.go

@@ -0,0 +1,19 @@
+//go:build go1.20
+
+package dialer
+
+import (
+	"net"
+
+	"github.com/metacubex/tfo-go"
+)
+
+type tcpDialer = tfo.Dialer
+
+func newTCPDialer(dialer net.Dialer, tfoEnabled bool) (tcpDialer, error) {
+	return tfo.Dialer{Dialer: dialer, DisableTFO: !tfoEnabled}, nil
+}
+
+func dialerFromTCPDialer(dialer tcpDialer) net.Dialer {
+	return dialer.Dialer
+}

common/dialer/default_go1.21.go

@@ -0,0 +1,11 @@
+//go:build go1.21
+
+package dialer
+
+import "net"
+
+const go121Available = true
+
+func setMultiPathTCP(dialer *net.Dialer) {
+	dialer.SetMultipathTCP(true)
+}

common/dialer/default_nongo1.20.go

@@ -0,0 +1,22 @@
+//go:build !go1.20
+
+package dialer
+
+import (
+	"net"
+
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type tcpDialer = net.Dialer
+
+func newTCPDialer(dialer net.Dialer, tfoEnabled bool) (tcpDialer, error) {
+	if tfoEnabled {
+		return dialer, E.New("TCP Fast Open requires go1.20, please recompile your binary.")
+	}
+	return dialer, nil
+}
+
+func dialerFromTCPDialer(dialer tcpDialer) net.Dialer {
+	return dialer
+}

common/dialer/default_nongo1.21.go

@@ -0,0 +1,12 @@
+//go:build !go1.21
+
+package dialer
+
+import (
+	"net"
+)
+
+const go121Available = false
+
+func setMultiPathTCP(dialer *net.Dialer) {
+}

common/dialer/tfo.go

@@ -1,3 +1,5 @@
+//go:build go1.20
+
 package dialer
 
 import (
@@ -14,7 +16,7 @@ import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
-	"github.com/database64128/tfo-go/v2"
+	"github.com/metacubex/tfo-go"
 )
 
 type slowOpenConn struct {
@@ -30,7 +32,7 @@ type slowOpenConn struct {
 	err         error
 }
 
-func DialSlowContext(dialer *tfo.Dialer, ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+func DialSlowContext(dialer *tcpDialer, ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	if dialer.DisableTFO || N.NetworkName(network) != N.NetworkTCP {
 		switch N.NetworkName(network) {
 		case N.NetworkTCP, N.NetworkUDP:

common/dialer/tfo_stub.go

@@ -0,0 +1,20 @@
+//go:build !go1.20
+
+package dialer
+
+import (
+	"context"
+	"net"
+
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func DialSlowContext(dialer *tcpDialer, ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	switch N.NetworkName(network) {
+	case N.NetworkTCP, N.NetworkUDP:
+		return dialer.DialContext(ctx, network, destination.String())
+	default:
+		return dialer.DialContext(ctx, network, destination.AddrString())
+	}
+}

common/dialer/wireguard.go

@@ -1,9 +1,13 @@
 package dialer
 
 import (
+	"net"
+
 	"github.com/sagernet/sing/common/control"
 )
 
 type WireGuardListener interface {
-	WireGuardControl() control.Func
+	ListenPacketCompat(network, address string) (net.PacketConn, error)
 }
+
+var WgControlFns []control.Func

common/ktls/ktls.go

@@ -1,133 +0,0 @@
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"bytes"
-	"context"
-	"crypto/tls"
-	"errors"
-	"io"
-	"net"
-	"os"
-	"syscall"
-
-	"github.com/sagernet/sing-box/common/badtls"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	N "github.com/sagernet/sing/common/network"
-	aTLS "github.com/sagernet/sing/common/tls"
-
-	"golang.org/x/sys/unix"
-)
-
-type Conn struct {
-	aTLS.Conn
-	ctx             context.Context
-	logger          logger.ContextLogger
-	conn            net.Conn
-	rawConn         *badtls.RawConn
-	syscallConn     syscall.Conn
-	rawSyscallConn  syscall.RawConn
-	readWaitOptions N.ReadWaitOptions
-	kernelTx        bool
-	kernelRx        bool
-	pendingRxSplice bool
-}
-
-func NewConn(ctx context.Context, logger logger.ContextLogger, conn aTLS.Conn, txOffload, rxOffload bool) (aTLS.Conn, error) {
-	err := Load()
-	if err != nil {
-		return nil, err
-	}
-	syscallConn, isSyscallConn := N.CastReader[interface {
-		io.Reader
-		syscall.Conn
-	}](conn.NetConn())
-	if !isSyscallConn {
-		return nil, os.ErrInvalid
-	}
-	rawSyscallConn, err := syscallConn.SyscallConn()
-	if err != nil {
-		return nil, err
-	}
-	rawConn, err := badtls.NewRawConn(conn)
-	if err != nil {
-		return nil, err
-	}
-	if *rawConn.Vers != tls.VersionTLS13 {
-		return nil, os.ErrInvalid
-	}
-	for rawConn.RawInput.Len() > 0 {
-		err = rawConn.ReadRecord()
-		if err != nil {
-			return nil, err
-		}
-		for rawConn.Hand.Len() > 0 {
-			err = rawConn.HandlePostHandshakeMessage()
-			if err != nil {
-				return nil, E.Cause(err, "handle post-handshake messages")
-			}
-		}
-	}
-	kConn := &Conn{
-		Conn:           conn,
-		ctx:            ctx,
-		logger:         logger,
-		conn:           conn.NetConn(),
-		rawConn:        rawConn,
-		syscallConn:    syscallConn,
-		rawSyscallConn: rawSyscallConn,
-	}
-	err = kConn.setupKernel(txOffload, rxOffload)
-	if err != nil {
-		return nil, err
-	}
-	return kConn, nil
-}
-
-func (c *Conn) Upstream() any {
-	return c.Conn
-}
-
-func (c *Conn) SyscallConnForRead() syscall.RawConn {
-	if !c.kernelRx {
-		return nil
-	}
-	if !*c.rawConn.IsClient {
-		c.logger.WarnContext(c.ctx, "ktls: RX splice is unavailable on the server size, since it will cause an unknown failure")
-		return nil
-	}
-	c.logger.DebugContext(c.ctx, "ktls: RX splice requested")
-	return c.rawSyscallConn
-}
-
-func (c *Conn) HandleSyscallReadError(inputErr error) ([]byte, error) {
-	if errors.Is(inputErr, unix.EINVAL) {
-		c.pendingRxSplice = true
-		err := c.readRecord()
-		if err != nil {
-			return nil, E.Cause(err, "ktls: handle non-application-data record")
-		}
-		var input bytes.Buffer
-		if c.rawConn.Input.Len() > 0 {
-			_, err = c.rawConn.Input.WriteTo(&input)
-			if err != nil {
-				return nil, err
-			}
-		}
-		return input.Bytes(), nil
-	} else if errors.Is(inputErr, unix.EBADMSG) {
-		return nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertBadRecordMAC))
-	} else {
-		return nil, E.Cause(inputErr, "ktls: unexpected errno")
-	}
-}
-
-func (c *Conn) SyscallConnForWrite() syscall.RawConn {
-	if !c.kernelTx {
-		return nil
-	}
-	c.logger.DebugContext(c.ctx, "ktls: TX splice requested")
-	return c.rawSyscallConn
-}

common/ktls/ktls_alert.go

@@ -1,80 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"crypto/tls"
-	"net"
-)
-
-const (
-	// alert level
-	alertLevelWarning = 1
-	alertLevelError   = 2
-)
-
-const (
-	alertCloseNotify                  = 0
-	alertUnexpectedMessage            = 10
-	alertBadRecordMAC                 = 20
-	alertDecryptionFailed             = 21
-	alertRecordOverflow               = 22
-	alertDecompressionFailure         = 30
-	alertHandshakeFailure             = 40
-	alertBadCertificate               = 42
-	alertUnsupportedCertificate       = 43
-	alertCertificateRevoked           = 44
-	alertCertificateExpired           = 45
-	alertCertificateUnknown           = 46
-	alertIllegalParameter             = 47
-	alertUnknownCA                    = 48
-	alertAccessDenied                 = 49
-	alertDecodeError                  = 50
-	alertDecryptError                 = 51
-	alertExportRestriction            = 60
-	alertProtocolVersion              = 70
-	alertInsufficientSecurity         = 71
-	alertInternalError                = 80
-	alertInappropriateFallback        = 86
-	alertUserCanceled                 = 90
-	alertNoRenegotiation              = 100
-	alertMissingExtension             = 109
-	alertUnsupportedExtension         = 110
-	alertCertificateUnobtainable      = 111
-	alertUnrecognizedName             = 112
-	alertBadCertificateStatusResponse = 113
-	alertBadCertificateHashValue      = 114
-	alertUnknownPSKIdentity           = 115
-	alertCertificateRequired          = 116
-	alertNoApplicationProtocol        = 120
-	alertECHRequired                  = 121
-)
-
-func (c *Conn) sendAlertLocked(err uint8) error {
-	switch err {
-	case alertNoRenegotiation, alertCloseNotify:
-		c.rawConn.Tmp[0] = alertLevelWarning
-	default:
-		c.rawConn.Tmp[0] = alertLevelError
-	}
-	c.rawConn.Tmp[1] = byte(err)
-
-	_, writeErr := c.writeRecordLocked(recordTypeAlert, c.rawConn.Tmp[0:2])
-	if err == alertCloseNotify {
-		// closeNotify is a special case in that it isn't an error.
-		return writeErr
-	}
-
-	return c.rawConn.Out.SetErrorLocked(&net.OpError{Op: "local error", Err: tls.AlertError(err)})
-}
-
-// sendAlert sends a TLS alert message.
-func (c *Conn) sendAlert(err uint8) error {
-	c.rawConn.Out.Lock()
-	defer c.rawConn.Out.Unlock()
-	return c.sendAlertLocked(err)
-}

common/ktls/ktls_cipher_suites_linux.go

@@ -1,326 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"crypto/tls"
-	"unsafe"
-
-	"github.com/sagernet/sing-box/common/badtls"
-)
-
-type kernelCryptoCipherType uint16
-
-const (
-	TLS_CIPHER_AES_GCM_128              kernelCryptoCipherType = 51
-	TLS_CIPHER_AES_GCM_128_IV_SIZE      kernelCryptoCipherType = 8
-	TLS_CIPHER_AES_GCM_128_KEY_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_AES_GCM_128_SALT_SIZE    kernelCryptoCipherType = 4
-	TLS_CIPHER_AES_GCM_128_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	TLS_CIPHER_AES_GCM_256              kernelCryptoCipherType = 52
-	TLS_CIPHER_AES_GCM_256_IV_SIZE      kernelCryptoCipherType = 8
-	TLS_CIPHER_AES_GCM_256_KEY_SIZE     kernelCryptoCipherType = 32
-	TLS_CIPHER_AES_GCM_256_SALT_SIZE    kernelCryptoCipherType = 4
-	TLS_CIPHER_AES_GCM_256_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	TLS_CIPHER_AES_CCM_128              kernelCryptoCipherType = 53
-	TLS_CIPHER_AES_CCM_128_IV_SIZE      kernelCryptoCipherType = 8
-	TLS_CIPHER_AES_CCM_128_KEY_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_AES_CCM_128_SALT_SIZE    kernelCryptoCipherType = 4
-	TLS_CIPHER_AES_CCM_128_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	TLS_CIPHER_CHACHA20_POLY1305              kernelCryptoCipherType = 54
-	TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE      kernelCryptoCipherType = 12
-	TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE     kernelCryptoCipherType = 32
-	TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE    kernelCryptoCipherType = 0
-	TLS_CIPHER_CHACHA20_POLY1305_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	// TLS_CIPHER_SM4_GCM              kernelCryptoCipherType = 55
-	// TLS_CIPHER_SM4_GCM_IV_SIZE      kernelCryptoCipherType = 8
-	// TLS_CIPHER_SM4_GCM_KEY_SIZE     kernelCryptoCipherType = 16
-	// TLS_CIPHER_SM4_GCM_SALT_SIZE    kernelCryptoCipherType = 4
-	// TLS_CIPHER_SM4_GCM_TAG_SIZE     kernelCryptoCipherType = 16
-	// TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	// TLS_CIPHER_SM4_CCM              kernelCryptoCipherType = 56
-	// TLS_CIPHER_SM4_CCM_IV_SIZE      kernelCryptoCipherType = 8
-	// TLS_CIPHER_SM4_CCM_KEY_SIZE     kernelCryptoCipherType = 16
-	// TLS_CIPHER_SM4_CCM_SALT_SIZE    kernelCryptoCipherType = 4
-	// TLS_CIPHER_SM4_CCM_TAG_SIZE     kernelCryptoCipherType = 16
-	// TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	TLS_CIPHER_ARIA_GCM_128              kernelCryptoCipherType = 57
-	TLS_CIPHER_ARIA_GCM_128_IV_SIZE      kernelCryptoCipherType = 8
-	TLS_CIPHER_ARIA_GCM_128_KEY_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_ARIA_GCM_128_SALT_SIZE    kernelCryptoCipherType = 4
-	TLS_CIPHER_ARIA_GCM_128_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_ARIA_GCM_128_REC_SEQ_SIZE kernelCryptoCipherType = 8
-
-	TLS_CIPHER_ARIA_GCM_256              kernelCryptoCipherType = 58
-	TLS_CIPHER_ARIA_GCM_256_IV_SIZE      kernelCryptoCipherType = 8
-	TLS_CIPHER_ARIA_GCM_256_KEY_SIZE     kernelCryptoCipherType = 32
-	TLS_CIPHER_ARIA_GCM_256_SALT_SIZE    kernelCryptoCipherType = 4
-	TLS_CIPHER_ARIA_GCM_256_TAG_SIZE     kernelCryptoCipherType = 16
-	TLS_CIPHER_ARIA_GCM_256_REC_SEQ_SIZE kernelCryptoCipherType = 8
-)
-
-type kernelCrypto interface {
-	String() string
-}
-
-type kernelCryptoInfo struct {
-	version     uint16
-	cipher_type kernelCryptoCipherType
-}
-
-var _ kernelCrypto = &kernelCryptoAES128GCM{}
-
-type kernelCryptoAES128GCM struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_AES_GCM_128_IV_SIZE]byte
-	key     [TLS_CIPHER_AES_GCM_128_KEY_SIZE]byte
-	salt    [TLS_CIPHER_AES_GCM_128_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoAES128GCM) String() string {
-	crypto.cipher_type = TLS_CIPHER_AES_GCM_128
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-var _ kernelCrypto = &kernelCryptoAES256GCM{}
-
-type kernelCryptoAES256GCM struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_AES_GCM_256_IV_SIZE]byte
-	key     [TLS_CIPHER_AES_GCM_256_KEY_SIZE]byte
-	salt    [TLS_CIPHER_AES_GCM_256_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoAES256GCM) String() string {
-	crypto.cipher_type = TLS_CIPHER_AES_GCM_256
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-var _ kernelCrypto = &kernelCryptoAES128CCM{}
-
-type kernelCryptoAES128CCM struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_AES_CCM_128_IV_SIZE]byte
-	key     [TLS_CIPHER_AES_CCM_128_KEY_SIZE]byte
-	salt    [TLS_CIPHER_AES_CCM_128_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoAES128CCM) String() string {
-	crypto.cipher_type = TLS_CIPHER_AES_CCM_128
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-var _ kernelCrypto = &kernelCryptoChacha20Poly1035{}
-
-type kernelCryptoChacha20Poly1035 struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE]byte
-	key     [TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE]byte
-	salt    [TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoChacha20Poly1035) String() string {
-	crypto.cipher_type = TLS_CIPHER_CHACHA20_POLY1305
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-// var _ kernelCrypto = &kernelCryptoSM4GCM{}
-
-// type kernelCryptoSM4GCM struct {
-// 	kernelCryptoInfo
-// 	iv      [TLS_CIPHER_SM4_GCM_IV_SIZE]byte
-// 	key     [TLS_CIPHER_SM4_GCM_KEY_SIZE]byte
-// 	salt    [TLS_CIPHER_SM4_GCM_SALT_SIZE]byte
-// 	rec_seq [TLS_CIPHER_SM4_GCM_REC_SEQ_SIZE]byte
-// }
-
-// func (crypto *kernelCryptoSM4GCM) String() string {
-// 	crypto.cipher_type = TLS_CIPHER_SM4_GCM
-// 	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-// }
-
-// var _ kernelCrypto = &kernelCryptoSM4CCM{}
-
-// type kernelCryptoSM4CCM struct {
-// 	kernelCryptoInfo
-// 	iv      [TLS_CIPHER_SM4_CCM_IV_SIZE]byte
-// 	key     [TLS_CIPHER_SM4_CCM_KEY_SIZE]byte
-// 	salt    [TLS_CIPHER_SM4_CCM_SALT_SIZE]byte
-// 	rec_seq [TLS_CIPHER_SM4_CCM_REC_SEQ_SIZE]byte
-// }
-
-// func (crypto *kernelCryptoSM4CCM) String() string {
-// 	crypto.cipher_type = TLS_CIPHER_SM4_CCM
-// 	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-// }
-
-var _ kernelCrypto = &kernelCryptoARIA128GCM{}
-
-type kernelCryptoARIA128GCM struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_ARIA_GCM_128_IV_SIZE]byte
-	key     [TLS_CIPHER_ARIA_GCM_128_KEY_SIZE]byte
-	salt    [TLS_CIPHER_ARIA_GCM_128_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_ARIA_GCM_128_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoARIA128GCM) String() string {
-	crypto.cipher_type = TLS_CIPHER_ARIA_GCM_128
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-var _ kernelCrypto = &kernelCryptoARIA256GCM{}
-
-type kernelCryptoARIA256GCM struct {
-	kernelCryptoInfo
-	iv      [TLS_CIPHER_ARIA_GCM_256_IV_SIZE]byte
-	key     [TLS_CIPHER_ARIA_GCM_256_KEY_SIZE]byte
-	salt    [TLS_CIPHER_ARIA_GCM_256_SALT_SIZE]byte
-	rec_seq [TLS_CIPHER_ARIA_GCM_256_REC_SEQ_SIZE]byte
-}
-
-func (crypto *kernelCryptoARIA256GCM) String() string {
-	crypto.cipher_type = TLS_CIPHER_ARIA_GCM_256
-	return string((*[unsafe.Sizeof(*crypto)]byte)(unsafe.Pointer(crypto))[:])
-}
-
-func kernelCipher(kernel *Support, hc *badtls.RawHalfConn, cipherSuite uint16, isRX bool) kernelCrypto {
-	if !kernel.TLS {
-		return nil
-	}
-
-	switch *hc.Version {
-	case tls.VersionTLS12:
-		if isRX && !kernel.TLS_Version13_RX {
-			return nil
-		}
-
-	case tls.VersionTLS13:
-		if !kernel.TLS_Version13 {
-			return nil
-		}
-
-		if isRX && !kernel.TLS_Version13_RX {
-			return nil
-		}
-
-	default:
-		return nil
-	}
-
-	var key, iv []byte
-	if *hc.Version == tls.VersionTLS13 {
-		key, iv = trafficKey(cipherSuiteTLS13ByID(cipherSuite), *hc.TrafficSecret)
-		/*if isRX {
-			key, iv = trafficKey(cipherSuiteTLS13ByID(cipherSuite), keyLog.RemoteTrafficSecret)
-		} else {
-			key, iv = trafficKey(cipherSuiteTLS13ByID(cipherSuite), keyLog.TrafficSecret)
-		}*/
-	} else {
-		// csPtr := cipherSuiteByID(cipherSuite)
-		// keysFromMasterSecret(*hc.Version, csPtr, keyLog.Secret, keyLog.Random)
-		return nil
-	}
-
-	switch cipherSuite {
-	case tls.TLS_AES_128_GCM_SHA256, tls.TLS_RSA_WITH_AES_128_GCM_SHA256, tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256:
-		crypto := new(kernelCryptoAES128GCM)
-
-		crypto.version = *hc.Version
-		copy(crypto.key[:], key)
-		copy(crypto.iv[:], iv[4:])
-		copy(crypto.salt[:], iv[:4])
-		crypto.rec_seq = *hc.Seq
-
-		return crypto
-	case tls.TLS_AES_256_GCM_SHA384, tls.TLS_RSA_WITH_AES_256_GCM_SHA384, tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384:
-		if !kernel.TLS_AES_256_GCM {
-			return nil
-		}
-
-		crypto := new(kernelCryptoAES256GCM)
-
-		crypto.version = *hc.Version
-		copy(crypto.key[:], key)
-		copy(crypto.iv[:], iv[4:])
-		copy(crypto.salt[:], iv[:4])
-		crypto.rec_seq = *hc.Seq
-
-		return crypto
-	//case tls.TLS_AES_128_CCM_SHA256, tls.TLS_RSA_WITH_AES_128_CCM_SHA256, tls.TLS_ECDHE_ECDSA_WITH_AES_128_CCM_SHA256:
-	//	if !kernel.TLS_AES_128_CCM {
-	//		return nil
-	//	}
-	//
-	//	crypto := new(kernelCryptoAES128CCM)
-	//
-	//	crypto.version = *hc.Version
-	//	copy(crypto.key[:], key)
-	//	copy(crypto.iv[:], iv[4:])
-	//	copy(crypto.salt[:], iv[:4])
-	//	crypto.rec_seq = *hc.Seq
-	//
-	//	return crypto
-	case tls.TLS_CHACHA20_POLY1305_SHA256, tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256:
-		if !kernel.TLS_CHACHA20_POLY1305 {
-			return nil
-		}
-
-		crypto := new(kernelCryptoChacha20Poly1035)
-
-		crypto.version = *hc.Version
-		copy(crypto.key[:], key)
-		copy(crypto.iv[:], iv)
-		crypto.rec_seq = *hc.Seq
-
-		return crypto
-	//case tls.TLS_RSA_WITH_ARIA_128_GCM_SHA256, tls.TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256, tls.TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256:
-	//	if !kernel.TLS_ARIA_GCM {
-	//		return nil
-	//	}
-	//
-	//	crypto := new(kernelCryptoARIA128GCM)
-	//
-	//	crypto.version = *hc.Version
-	//	copy(crypto.key[:], key)
-	//	copy(crypto.iv[:], iv[4:])
-	//	copy(crypto.salt[:], iv[:4])
-	//	crypto.rec_seq = *hc.Seq
-	//
-	//	return crypto
-	//case tls.TLS_RSA_WITH_ARIA_256_GCM_SHA384, tls.TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384, tls.TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384:
-	//	if !kernel.TLS_ARIA_GCM {
-	//		return nil
-	//	}
-	//
-	//	crypto := new(kernelCryptoARIA256GCM)
-	//
-	//	crypto.version = *hc.Version
-	//	copy(crypto.key[:], key)
-	//	copy(crypto.iv[:], iv[4:])
-	//	copy(crypto.salt[:], iv[:4])
-	//	crypto.rec_seq = *hc.Seq
-	//
-	//	return crypto
-	default:
-		return nil
-	}
-}

common/ktls/ktls_close.go

@@ -1,67 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"fmt"
-	"net"
-	"time"
-)
-
-func (c *Conn) Close() error {
-	if !c.kernelTx {
-		return c.Conn.Close()
-	}
-
-	// Interlock with Conn.Write above.
-	var x int32
-	for {
-		x = c.rawConn.ActiveCall.Load()
-		if x&1 != 0 {
-			return net.ErrClosed
-		}
-		if c.rawConn.ActiveCall.CompareAndSwap(x, x|1) {
-			break
-		}
-	}
-	if x != 0 {
-		// io.Writer and io.Closer should not be used concurrently.
-		// If Close is called while a Write is currently in-flight,
-		// interpret that as a sign that this Close is really just
-		// being used to break the Write and/or clean up resources and
-		// avoid sending the alertCloseNotify, which may block
-		// waiting on handshakeMutex or the c.out mutex.
-		return c.conn.Close()
-	}
-
-	var alertErr error
-	if c.rawConn.IsHandshakeComplete.Load() {
-		if err := c.closeNotify(); err != nil {
-			alertErr = fmt.Errorf("tls: failed to send closeNotify alert (but connection was closed anyway): %w", err)
-		}
-	}
-
-	if err := c.conn.Close(); err != nil {
-		return err
-	}
-	return alertErr
-}
-
-func (c *Conn) closeNotify() error {
-	c.rawConn.Out.Lock()
-	defer c.rawConn.Out.Unlock()
-
-	if !*c.rawConn.CloseNotifySent {
-		// Set a Write Deadline to prevent possibly blocking forever.
-		c.SetWriteDeadline(time.Now().Add(time.Second * 5))
-		*c.rawConn.CloseNotifyErr = c.sendAlertLocked(alertCloseNotify)
-		*c.rawConn.CloseNotifySent = true
-		// Any subsequent writes will fail.
-		c.SetWriteDeadline(time.Now())
-	}
-	return *c.rawConn.CloseNotifyErr
-}

common/ktls/ktls_const.go

@@ -1,24 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-const (
-	maxPlaintext               = 16384        // maximum plaintext payload length
-	maxCiphertext              = 16384 + 2048 // maximum ciphertext payload length
-	maxCiphertextTLS13         = 16384 + 256  // maximum ciphertext length in TLS 1.3
-	recordHeaderLen            = 5            // record header length
-	maxHandshake               = 65536        // maximum handshake we support (protocol max is 16 MB)
-	maxHandshakeCertificateMsg = 262144       // maximum certificate message size (256 KiB)
-	maxUselessRecords          = 16           // maximum number of consecutive non-advancing records
-)
-
-const (
-	recordTypeChangeCipherSpec = 20
-	recordTypeAlert            = 21
-	recordTypeHandshake        = 22
-	recordTypeApplicationData  = 23
-)

common/ktls/ktls_handshake_messages.go

@@ -1,238 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"fmt"
-
-	"golang.org/x/crypto/cryptobyte"
-)
-
-// The marshalingFunction type is an adapter to allow the use of ordinary
-// functions as cryptobyte.MarshalingValue.
-type marshalingFunction func(b *cryptobyte.Builder) error
-
-func (f marshalingFunction) Marshal(b *cryptobyte.Builder) error {
-	return f(b)
-}
-
-// addBytesWithLength appends a sequence of bytes to the cryptobyte.Builder. If
-// the length of the sequence is not the value specified, it produces an error.
-func addBytesWithLength(b *cryptobyte.Builder, v []byte, n int) {
-	b.AddValue(marshalingFunction(func(b *cryptobyte.Builder) error {
-		if len(v) != n {
-			return fmt.Errorf("invalid value length: expected %d, got %d", n, len(v))
-		}
-		b.AddBytes(v)
-		return nil
-	}))
-}
-
-// addUint64 appends a big-endian, 64-bit value to the cryptobyte.Builder.
-func addUint64(b *cryptobyte.Builder, v uint64) {
-	b.AddUint32(uint32(v >> 32))
-	b.AddUint32(uint32(v))
-}
-
-// readUint64 decodes a big-endian, 64-bit value into out and advances over it.
-// It reports whether the read was successful.
-func readUint64(s *cryptobyte.String, out *uint64) bool {
-	var hi, lo uint32
-	if !s.ReadUint32(&hi) || !s.ReadUint32(&lo) {
-		return false
-	}
-	*out = uint64(hi)<<32 | uint64(lo)
-	return true
-}
-
-// readUint8LengthPrefixed acts like s.ReadUint8LengthPrefixed, but targets a
-// []byte instead of a cryptobyte.String.
-func readUint8LengthPrefixed(s *cryptobyte.String, out *[]byte) bool {
-	return s.ReadUint8LengthPrefixed((*cryptobyte.String)(out))
-}
-
-// readUint16LengthPrefixed acts like s.ReadUint16LengthPrefixed, but targets a
-// []byte instead of a cryptobyte.String.
-func readUint16LengthPrefixed(s *cryptobyte.String, out *[]byte) bool {
-	return s.ReadUint16LengthPrefixed((*cryptobyte.String)(out))
-}
-
-// readUint24LengthPrefixed acts like s.ReadUint24LengthPrefixed, but targets a
-// []byte instead of a cryptobyte.String.
-func readUint24LengthPrefixed(s *cryptobyte.String, out *[]byte) bool {
-	return s.ReadUint24LengthPrefixed((*cryptobyte.String)(out))
-}
-
-type keyUpdateMsg struct {
-	updateRequested bool
-}
-
-func (m *keyUpdateMsg) marshal() ([]byte, error) {
-	var b cryptobyte.Builder
-	b.AddUint8(typeKeyUpdate)
-	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-		if m.updateRequested {
-			b.AddUint8(1)
-		} else {
-			b.AddUint8(0)
-		}
-	})
-
-	return b.Bytes()
-}
-
-func (m *keyUpdateMsg) unmarshal(data []byte) bool {
-	s := cryptobyte.String(data)
-
-	var updateRequested uint8
-	if !s.Skip(4) || // message type and uint24 length field
-		!s.ReadUint8(&updateRequested) || !s.Empty() {
-		return false
-	}
-	switch updateRequested {
-	case 0:
-		m.updateRequested = false
-	case 1:
-		m.updateRequested = true
-	default:
-		return false
-	}
-	return true
-}
-
-// TLS handshake message types.
-const (
-	typeHelloRequest          uint8 = 0
-	typeClientHello           uint8 = 1
-	typeServerHello           uint8 = 2
-	typeNewSessionTicket      uint8 = 4
-	typeEndOfEarlyData        uint8 = 5
-	typeEncryptedExtensions   uint8 = 8
-	typeCertificate           uint8 = 11
-	typeServerKeyExchange     uint8 = 12
-	typeCertificateRequest    uint8 = 13
-	typeServerHelloDone       uint8 = 14
-	typeCertificateVerify     uint8 = 15
-	typeClientKeyExchange     uint8 = 16
-	typeFinished              uint8 = 20
-	typeCertificateStatus     uint8 = 22
-	typeKeyUpdate             uint8 = 24
-	typeCompressedCertificate uint8 = 25
-	typeMessageHash           uint8 = 254 // synthetic message
-)
-
-// TLS compression types.
-const (
-	compressionNone uint8 = 0
-)
-
-// TLS extension numbers
-const (
-	extensionServerName              uint16 = 0
-	extensionStatusRequest           uint16 = 5
-	extensionSupportedCurves         uint16 = 10 // supported_groups in TLS 1.3, see RFC 8446, Section 4.2.7
-	extensionSupportedPoints         uint16 = 11
-	extensionSignatureAlgorithms     uint16 = 13
-	extensionALPN                    uint16 = 16
-	extensionSCT                     uint16 = 18
-	extensionPadding                 uint16 = 21
-	extensionExtendedMasterSecret    uint16 = 23
-	extensionCompressCertificate     uint16 = 27 // compress_certificate in TLS 1.3
-	extensionSessionTicket           uint16 = 35
-	extensionPreSharedKey            uint16 = 41
-	extensionEarlyData               uint16 = 42
-	extensionSupportedVersions       uint16 = 43
-	extensionCookie                  uint16 = 44
-	extensionPSKModes                uint16 = 45
-	extensionCertificateAuthorities  uint16 = 47
-	extensionSignatureAlgorithmsCert uint16 = 50
-	extensionKeyShare                uint16 = 51
-	extensionQUICTransportParameters uint16 = 57
-	extensionALPS                    uint16 = 17513
-	extensionRenegotiationInfo       uint16 = 0xff01
-	extensionECHOuterExtensions      uint16 = 0xfd00
-	extensionEncryptedClientHello    uint16 = 0xfe0d
-)
-
-type handshakeMessage interface {
-	marshal() ([]byte, error)
-	unmarshal([]byte) bool
-}
-type newSessionTicketMsgTLS13 struct {
-	lifetime     uint32
-	ageAdd       uint32
-	nonce        []byte
-	label        []byte
-	maxEarlyData uint32
-}
-
-func (m *newSessionTicketMsgTLS13) marshal() ([]byte, error) {
-	var b cryptobyte.Builder
-	b.AddUint8(typeNewSessionTicket)
-	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddUint32(m.lifetime)
-		b.AddUint32(m.ageAdd)
-		b.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-			b.AddBytes(m.nonce)
-		})
-		b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-			b.AddBytes(m.label)
-		})
-
-		b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-			if m.maxEarlyData > 0 {
-				b.AddUint16(extensionEarlyData)
-				b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-					b.AddUint32(m.maxEarlyData)
-				})
-			}
-		})
-	})
-
-	return b.Bytes()
-}
-
-func (m *newSessionTicketMsgTLS13) unmarshal(data []byte) bool {
-	*m = newSessionTicketMsgTLS13{}
-	s := cryptobyte.String(data)
-
-	var extensions cryptobyte.String
-	if !s.Skip(4) || // message type and uint24 length field
-		!s.ReadUint32(&m.lifetime) ||
-		!s.ReadUint32(&m.ageAdd) ||
-		!readUint8LengthPrefixed(&s, &m.nonce) ||
-		!readUint16LengthPrefixed(&s, &m.label) ||
-		!s.ReadUint16LengthPrefixed(&extensions) ||
-		!s.Empty() {
-		return false
-	}
-
-	for !extensions.Empty() {
-		var extension uint16
-		var extData cryptobyte.String
-		if !extensions.ReadUint16(&extension) ||
-			!extensions.ReadUint16LengthPrefixed(&extData) {
-			return false
-		}
-
-		switch extension {
-		case extensionEarlyData:
-			if !extData.ReadUint32(&m.maxEarlyData) {
-				return false
-			}
-		default:
-			// Ignore unknown extensions.
-			continue
-		}
-
-		if !extData.Empty() {
-			return false
-		}
-	}
-
-	return true
-}

common/ktls/ktls_key_update.go

@@ -1,173 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"crypto/tls"
-	"errors"
-	"fmt"
-	"io"
-	"os"
-)
-
-// handlePostHandshakeMessage processes a handshake message arrived after the
-// handshake is complete. Up to TLS 1.2, it indicates the start of a renegotiation.
-func (c *Conn) handlePostHandshakeMessage() error {
-	if *c.rawConn.Vers != tls.VersionTLS13 {
-		return errors.New("ktls: kernel does not support TLS 1.2 renegotiation")
-	}
-
-	msg, err := c.readHandshake(nil)
-	if err != nil {
-		return err
-	}
-	//c.retryCount++
-	//if c.retryCount > maxUselessRecords {
-	//	c.sendAlert(alertUnexpectedMessage)
-	//	return c.in.setErrorLocked(errors.New("tls: too many non-advancing records"))
-	//}
-
-	switch msg := msg.(type) {
-	case *newSessionTicketMsgTLS13:
-		// return errors.New("ktls: received new session ticket")
-		return nil
-	case *keyUpdateMsg:
-		return c.handleKeyUpdate(msg)
-	}
-	// The QUIC layer is supposed to treat an unexpected post-handshake CertificateRequest
-	// as a QUIC-level PROTOCOL_VIOLATION error (RFC 9001, Section 4.4). Returning an
-	// unexpected_message alert here doesn't provide it with enough information to distinguish
-	// this condition from other unexpected messages. This is probably fine.
-	c.sendAlert(alertUnexpectedMessage)
-	return fmt.Errorf("tls: received unexpected handshake message of type %T", msg)
-}
-
-func (c *Conn) handleKeyUpdate(keyUpdate *keyUpdateMsg) error {
-	//if c.quic != nil {
-	//	c.sendAlert(alertUnexpectedMessage)
-	//	return c.in.setErrorLocked(errors.New("tls: received unexpected key update message"))
-	//}
-
-	cipherSuite := cipherSuiteTLS13ByID(*c.rawConn.CipherSuite)
-	if cipherSuite == nil {
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertInternalError))
-	}
-
-	newSecret := nextTrafficSecret(cipherSuite, *c.rawConn.In.TrafficSecret)
-	c.rawConn.In.SetTrafficSecret(cipherSuite, 0 /*tls.QUICEncryptionLevelInitial*/, newSecret)
-
-	err := c.resetupRX()
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return c.rawConn.In.SetErrorLocked(fmt.Errorf("ktls: resetupRX failed: %w", err))
-	}
-
-	if keyUpdate.updateRequested {
-		c.rawConn.Out.Lock()
-		defer c.rawConn.Out.Unlock()
-
-		resetup, err := c.resetupTX()
-		if err != nil {
-			c.sendAlertLocked(alertInternalError)
-			return c.rawConn.Out.SetErrorLocked(fmt.Errorf("ktls: resetupTX failed: %w", err))
-		}
-
-		msg := &keyUpdateMsg{}
-		msgBytes, err := msg.marshal()
-		if err != nil {
-			return err
-		}
-		_, err = c.writeRecordLocked(recordTypeHandshake, msgBytes)
-		if err != nil {
-			// Surface the error at the next write.
-			c.rawConn.Out.SetErrorLocked(err)
-			return nil
-		}
-
-		newSecret := nextTrafficSecret(cipherSuite, *c.rawConn.Out.TrafficSecret)
-		c.rawConn.Out.SetTrafficSecret(cipherSuite, 0 /*QUICEncryptionLevelInitial*/, newSecret)
-
-		err = resetup()
-		if err != nil {
-			return c.rawConn.Out.SetErrorLocked(fmt.Errorf("ktls: resetupTX failed: %w", err))
-		}
-	}
-
-	return nil
-}
-
-func (c *Conn) readHandshakeBytes(n int) error {
-	//if c.quic != nil {
-	//	return c.quicReadHandshakeBytes(n)
-	//}
-	for c.rawConn.Hand.Len() < n {
-		if err := c.readRecord(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (c *Conn) readHandshake(transcript io.Writer) (any, error) {
-	if err := c.readHandshakeBytes(4); err != nil {
-		return nil, err
-	}
-	data := c.rawConn.Hand.Bytes()
-
-	maxHandshakeSize := maxHandshake
-	// hasVers indicates we're past the first message, forcing someone trying to
-	// make us just allocate a large buffer to at least do the initial part of
-	// the handshake first.
-	//if c.haveVers && data[0] == typeCertificate {
-	// Since certificate messages are likely to be the only messages that
-	// can be larger than maxHandshake, we use a special limit for just
-	// those messages.
-	//maxHandshakeSize = maxHandshakeCertificateMsg
-	//}
-
-	n := int(data[1])<<16 | int(data[2])<<8 | int(data[3])
-	if n > maxHandshakeSize {
-		c.sendAlertLocked(alertInternalError)
-		return nil, c.rawConn.In.SetErrorLocked(fmt.Errorf("tls: handshake message of length %d bytes exceeds maximum of %d bytes", n, maxHandshakeSize))
-	}
-	if err := c.readHandshakeBytes(4 + n); err != nil {
-		return nil, err
-	}
-	data = c.rawConn.Hand.Next(4 + n)
-	return c.unmarshalHandshakeMessage(data, transcript)
-}
-
-func (c *Conn) unmarshalHandshakeMessage(data []byte, transcript io.Writer) (any, error) {
-	var m handshakeMessage
-	switch data[0] {
-	case typeNewSessionTicket:
-		if *c.rawConn.Vers == tls.VersionTLS13 {
-			m = new(newSessionTicketMsgTLS13)
-		} else {
-			return nil, os.ErrInvalid
-		}
-	case typeKeyUpdate:
-		m = new(keyUpdateMsg)
-	default:
-		return nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-	}
-
-	// The handshake message unmarshalers
-	// expect to be able to keep references to data,
-	// so pass in a fresh copy that won't be overwritten.
-	data = append([]byte(nil), data...)
-
-	if !m.unmarshal(data) {
-		return nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertDecodeError))
-	}
-
-	if transcript != nil {
-		transcript.Write(data)
-	}
-
-	return m, nil
-}

common/ktls/ktls_linux.go

@@ -1,329 +0,0 @@
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"crypto/tls"
-	"errors"
-	"io"
-	"os"
-	"strings"
-	"sync"
-	"syscall"
-	"unsafe"
-
-	"github.com/sagernet/sing-box/common/badversion"
-	"github.com/sagernet/sing/common/control"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/shell"
-
-	"golang.org/x/sys/unix"
-)
-
-// mod from https://gitlab.com/go-extension/tls
-
-const (
-	TLS_TX               = 1
-	TLS_RX               = 2
-	TLS_TX_ZEROCOPY_RO   = 3 // TX zerocopy (only sendfile now)
-	TLS_RX_EXPECT_NO_PAD = 4 // Attempt opportunistic zero-copy, TLS 1.3 only
-
-	TLS_SET_RECORD_TYPE = 1
-	TLS_GET_RECORD_TYPE = 2
-)
-
-type Support struct {
-	TLS, TLS_RX                     bool
-	TLS_Version13, TLS_Version13_RX bool
-
-	TLS_TX_ZEROCOPY  bool
-	TLS_RX_NOPADDING bool
-
-	TLS_AES_256_GCM       bool
-	TLS_AES_128_CCM       bool
-	TLS_CHACHA20_POLY1305 bool
-	TLS_SM4               bool
-	TLS_ARIA_GCM          bool
-
-	TLS_Version13_KeyUpdate bool
-}
-
-var KernelSupport = sync.OnceValues(func() (*Support, error) {
-	var uname unix.Utsname
-	err := unix.Uname(&uname)
-	if err != nil {
-		return nil, err
-	}
-
-	kernelVersion := badversion.Parse(strings.Trim(string(uname.Release[:]), "\x00"))
-	if err != nil {
-		return nil, err
-	}
-	var support Support
-	switch {
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6, Minor: 14}):
-		support.TLS_Version13_KeyUpdate = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6, Minor: 1}):
-		support.TLS_ARIA_GCM = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6}):
-		support.TLS_Version13_RX = true
-		support.TLS_RX_NOPADDING = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 19}):
-		support.TLS_TX_ZEROCOPY = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 16}):
-		support.TLS_SM4 = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 11}):
-		support.TLS_CHACHA20_POLY1305 = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 2}):
-		support.TLS_AES_128_CCM = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 1}):
-		support.TLS_AES_256_GCM = true
-		support.TLS_Version13 = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 4, Minor: 17}):
-		support.TLS_RX = true
-		fallthrough
-	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 4, Minor: 13}):
-		support.TLS = true
-	}
-
-	if support.TLS && support.TLS_Version13 {
-		_, err := os.Stat("/sys/module/tls")
-		if err != nil {
-			if os.Getuid() == 0 {
-				output, err := shell.Exec("modprobe", "tls").Read()
-				if err != nil {
-					return nil, E.Extend(E.Cause(err, "modprobe tls"), output)
-				}
-			} else {
-				return nil, E.New("ktls: kernel TLS module not loaded")
-			}
-		}
-	}
-
-	return &support, nil
-})
-
-func Load() error {
-	support, err := KernelSupport()
-	if err != nil {
-		return E.Cause(err, "ktls: check availability")
-	}
-	if !support.TLS || !support.TLS_Version13 {
-		return E.New("ktls: kernel does not support TLS 1.3")
-	}
-	return nil
-}
-
-func (c *Conn) setupKernel(txOffload, rxOffload bool) error {
-	if !txOffload && !rxOffload {
-		return os.ErrInvalid
-	}
-	support, err := KernelSupport()
-	if err != nil {
-		return E.Cause(err, "check availability")
-	}
-	if !support.TLS || !support.TLS_Version13 {
-		return E.New("kernel does not support TLS 1.3")
-	}
-	c.rawConn.Out.Lock()
-	defer c.rawConn.Out.Unlock()
-	err = control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-		return syscall.SetsockoptString(int(fd), unix.SOL_TCP, unix.TCP_ULP, "tls")
-	})
-	if err != nil {
-		return os.NewSyscallError("setsockopt", err)
-	}
-
-	if txOffload {
-		txCrypto := kernelCipher(support, c.rawConn.Out, *c.rawConn.CipherSuite, false)
-		if txCrypto == nil {
-			return E.New("unsupported cipher suite")
-		}
-		err = control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-			return syscall.SetsockoptString(int(fd), unix.SOL_TLS, TLS_TX, txCrypto.String())
-		})
-		if err != nil {
-			return err
-		}
-		if support.TLS_TX_ZEROCOPY {
-			err = control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-				return syscall.SetsockoptInt(int(fd), unix.SOL_TLS, TLS_TX_ZEROCOPY_RO, 1)
-			})
-			if err != nil {
-				return err
-			}
-		}
-		c.kernelTx = true
-		c.logger.DebugContext(c.ctx, "ktls: kernel TLS TX enabled")
-	}
-
-	if rxOffload {
-		rxCrypto := kernelCipher(support, c.rawConn.In, *c.rawConn.CipherSuite, true)
-		if rxCrypto == nil {
-			return E.New("unsupported cipher suite")
-		}
-		err = control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-			return syscall.SetsockoptString(int(fd), unix.SOL_TLS, TLS_RX, rxCrypto.String())
-		})
-		if err != nil {
-			return err
-		}
-		if *c.rawConn.Vers >= tls.VersionTLS13 && support.TLS_RX_NOPADDING {
-			err = control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-				return syscall.SetsockoptInt(int(fd), unix.SOL_TLS, TLS_RX_EXPECT_NO_PAD, 1)
-			})
-			if err != nil {
-				return err
-			}
-		}
-		c.kernelRx = true
-		c.logger.DebugContext(c.ctx, "ktls: kernel TLS RX enabled")
-	}
-	return nil
-}
-
-func (c *Conn) resetupTX() (func() error, error) {
-	if !c.kernelTx {
-		return nil, nil
-	}
-	support, err := KernelSupport()
-	if err != nil {
-		return nil, err
-	}
-	if !support.TLS_Version13_KeyUpdate {
-		return nil, errors.New("ktls: kernel does not support rekey")
-	}
-	txCrypto := kernelCipher(support, c.rawConn.Out, *c.rawConn.CipherSuite, false)
-	if txCrypto == nil {
-		return nil, errors.New("ktls: set kernelCipher on unsupported tls session")
-	}
-	return func() error {
-		return control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-			return syscall.SetsockoptString(int(fd), unix.SOL_TLS, TLS_TX, txCrypto.String())
-		})
-	}, nil
-}
-
-func (c *Conn) resetupRX() error {
-	if !c.kernelRx {
-		return nil
-	}
-	support, err := KernelSupport()
-	if err != nil {
-		return err
-	}
-	if !support.TLS_Version13_KeyUpdate {
-		return errors.New("ktls: kernel does not support rekey")
-	}
-	rxCrypto := kernelCipher(support, c.rawConn.In, *c.rawConn.CipherSuite, true)
-	if rxCrypto == nil {
-		return errors.New("ktls: set kernelCipher on unsupported tls session")
-	}
-	return control.Raw(c.rawSyscallConn, func(fd uintptr) error {
-		return syscall.SetsockoptString(int(fd), unix.SOL_TLS, TLS_RX, rxCrypto.String())
-	})
-}
-
-func (c *Conn) readKernelRecord() (uint8, []byte, error) {
-	if c.rawConn.RawInput.Len() < maxPlaintext {
-		c.rawConn.RawInput.Grow(maxPlaintext - c.rawConn.RawInput.Len())
-	}
-
-	data := c.rawConn.RawInput.Bytes()[:maxPlaintext]
-
-	// cmsg for record type
-	buffer := make([]byte, unix.CmsgSpace(1))
-	cmsg := (*unix.Cmsghdr)(unsafe.Pointer(&buffer[0]))
-	cmsg.SetLen(unix.CmsgLen(1))
-
-	var iov unix.Iovec
-	iov.Base = &data[0]
-	iov.SetLen(len(data))
-
-	var msg unix.Msghdr
-	msg.Control = &buffer[0]
-	msg.Controllen = cmsg.Len
-	msg.Iov = &iov
-	msg.Iovlen = 1
-
-	var n int
-	var err error
-	er := c.rawSyscallConn.Read(func(fd uintptr) bool {
-		n, err = recvmsg(int(fd), &msg, 0)
-		return err != unix.EAGAIN || c.pendingRxSplice
-	})
-	if er != nil {
-		return 0, nil, er
-	}
-	switch err {
-	case nil:
-	case syscall.EINVAL, syscall.EAGAIN:
-		return 0, nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertProtocolVersion))
-	case syscall.EMSGSIZE:
-		return 0, nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertRecordOverflow))
-	case syscall.EBADMSG:
-		return 0, nil, c.rawConn.In.SetErrorLocked(c.sendAlert(alertDecryptError))
-	default:
-		return 0, nil, err
-	}
-
-	if n <= 0 {
-		return 0, nil, c.rawConn.In.SetErrorLocked(io.EOF)
-	}
-
-	if cmsg.Level == unix.SOL_TLS && cmsg.Type == TLS_GET_RECORD_TYPE {
-		typ := buffer[unix.CmsgLen(0)]
-		return typ, data[:n], nil
-	}
-
-	return recordTypeApplicationData, data[:n], nil
-}
-
-func (c *Conn) writeKernelRecord(typ uint16, data []byte) (int, error) {
-	if typ == recordTypeApplicationData {
-		return c.conn.Write(data)
-	}
-
-	// cmsg for record type
-	buffer := make([]byte, unix.CmsgSpace(1))
-	cmsg := (*unix.Cmsghdr)(unsafe.Pointer(&buffer[0]))
-	cmsg.SetLen(unix.CmsgLen(1))
-	buffer[unix.CmsgLen(0)] = byte(typ)
-	cmsg.Level = unix.SOL_TLS
-	cmsg.Type = TLS_SET_RECORD_TYPE
-
-	var iov unix.Iovec
-	iov.Base = &data[0]
-	iov.SetLen(len(data))
-
-	var msg unix.Msghdr
-	msg.Control = &buffer[0]
-	msg.Controllen = cmsg.Len
-	msg.Iov = &iov
-	msg.Iovlen = 1
-
-	var n int
-	var err error
-	ew := c.rawSyscallConn.Write(func(fd uintptr) bool {
-		n, err = sendmsg(int(fd), &msg, 0)
-		return err != unix.EAGAIN
-	})
-	if ew != nil {
-		return 0, ew
-	}
-	return n, err
-}
-
-//go:linkname recvmsg golang.org/x/sys/unix.recvmsg
-func recvmsg(fd int, msg *unix.Msghdr, flags int) (n int, err error)
-
-//go:linkname sendmsg golang.org/x/sys/unix.sendmsg
-func sendmsg(fd int, msg *unix.Msghdr, flags int) (n int, err error)

common/ktls/ktls_prf.go

@@ -1,24 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import "unsafe"
-
-//go:linkname cipherSuiteByID github.com/metacubex/utls.cipherSuiteByID
-func cipherSuiteByID(id uint16) unsafe.Pointer
-
-//go:linkname keysFromMasterSecret github.com/metacubex/utls.keysFromMasterSecret
-func keysFromMasterSecret(version uint16, suite unsafe.Pointer, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte)
-
-//go:linkname cipherSuiteTLS13ByID github.com/metacubex/utls.cipherSuiteTLS13ByID
-func cipherSuiteTLS13ByID(id uint16) unsafe.Pointer
-
-//go:linkname nextTrafficSecret github.com/metacubex/utls.(*cipherSuiteTLS13).nextTrafficSecret
-func nextTrafficSecret(cs unsafe.Pointer, trafficSecret []byte) []byte
-
-//go:linkname trafficKey github.com/metacubex/utls.(*cipherSuiteTLS13).trafficKey
-func trafficKey(cs unsafe.Pointer, trafficSecret []byte) (key, iv []byte)

common/ktls/ktls_read.go

@@ -1,292 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"bytes"
-	"crypto/tls"
-	"fmt"
-	"io"
-	"net"
-)
-
-func (c *Conn) Read(b []byte) (int, error) {
-	if !c.kernelRx {
-		return c.Conn.Read(b)
-	}
-
-	if len(b) == 0 {
-		// Put this after Handshake, in case people were calling
-		// Read(nil) for the side effect of the Handshake.
-		return 0, nil
-	}
-
-	c.rawConn.In.Lock()
-	defer c.rawConn.In.Unlock()
-
-	for c.rawConn.Input.Len() == 0 {
-		if err := c.readRecord(); err != nil {
-			return 0, err
-		}
-		for c.rawConn.Hand.Len() > 0 {
-			if err := c.handlePostHandshakeMessage(); err != nil {
-				return 0, err
-			}
-		}
-	}
-
-	n, _ := c.rawConn.Input.Read(b)
-
-	// If a close-notify alert is waiting, read it so that we can return (n,
-	// EOF) instead of (n, nil), to signal to the HTTP response reading
-	// goroutine that the connection is now closed. This eliminates a race
-	// where the HTTP response reading goroutine would otherwise not observe
-	// the EOF until its next read, by which time a client goroutine might
-	// have already tried to reuse the HTTP connection for a new request.
-	// See https://golang.org/cl/76400046 and https://golang.org/issue/3514
-	if n != 0 && c.rawConn.Input.Len() == 0 && c.rawConn.RawInput.Len() > 0 &&
-		c.rawConn.RawInput.Bytes()[0] == recordTypeAlert {
-		if err := c.readRecord(); err != nil {
-			return n, err // will be io.EOF on closeNotify
-		}
-	}
-
-	return n, nil
-}
-
-func (c *Conn) readRecord() error {
-	if *c.rawConn.In.Err != nil {
-		return *c.rawConn.In.Err
-	}
-
-	typ, data, err := c.readRawRecord()
-	if err != nil {
-		return err
-	}
-
-	if len(data) > maxPlaintext {
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertRecordOverflow))
-	}
-
-	// Application Data messages are always protected.
-	if c.rawConn.In.Cipher == nil && typ == recordTypeApplicationData {
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-	}
-
-	//if typ != recordTypeAlert && typ != recordTypeChangeCipherSpec && len(data) > 0 {
-	// This is a state-advancing message: reset the retry count.
-	// c.retryCount = 0
-	//}
-
-	// Handshake messages MUST NOT be interleaved with other record types in TLS 1.3.
-	if *c.rawConn.Vers == tls.VersionTLS13 && typ != recordTypeHandshake && c.rawConn.Hand.Len() > 0 {
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-	}
-
-	switch typ {
-	default:
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-	case recordTypeAlert:
-		//if c.quic != nil {
-		//	return c.rawConn.In.setErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		//}
-		if len(data) != 2 {
-			return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		}
-		if data[1] == alertCloseNotify {
-			return c.rawConn.In.SetErrorLocked(io.EOF)
-		}
-		if *c.rawConn.Vers == tls.VersionTLS13 {
-			// TLS 1.3 removed warning-level alerts except for alertUserCanceled
-			// (RFC 8446, § 6.1). Since at least one major implementation
-			// (https://bugs.openjdk.org/browse/JDK-8323517) misuses this alert,
-			// many TLS stacks now ignore it outright when seen in a TLS 1.3
-			// handshake (e.g. BoringSSL, NSS, Rustls).
-			if data[1] == alertUserCanceled {
-				// Like TLS 1.2 alertLevelWarning alerts, we drop the record and retry.
-				return c.retryReadRecord( /*expectChangeCipherSpec*/ )
-			}
-			return c.rawConn.In.SetErrorLocked(&net.OpError{Op: "remote error", Err: tls.AlertError(data[1])})
-		}
-		switch data[0] {
-		case alertLevelWarning:
-			// Drop the record on the floor and retry.
-			return c.retryReadRecord( /*expectChangeCipherSpec*/ )
-		case alertLevelError:
-			return c.rawConn.In.SetErrorLocked(&net.OpError{Op: "remote error", Err: tls.AlertError(data[1])})
-		default:
-			return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		}
-
-	case recordTypeChangeCipherSpec:
-		if len(data) != 1 || data[0] != 1 {
-			return c.rawConn.In.SetErrorLocked(c.sendAlert(alertDecodeError))
-		}
-		// Handshake messages are not allowed to fragment across the CCS.
-		if c.rawConn.Hand.Len() > 0 {
-			return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		}
-		// In TLS 1.3, change_cipher_spec records are ignored until the
-		// Finished. See RFC 8446, Appendix D.4. Note that according to Section
-		// 5, a server can send a ChangeCipherSpec before its ServerHello, when
-		// c.vers is still unset. That's not useful though and suspicious if the
-		// server then selects a lower protocol version, so don't allow that.
-		if *c.rawConn.Vers == tls.VersionTLS13 {
-			return c.retryReadRecord( /*expectChangeCipherSpec*/ )
-		}
-		// if !expectChangeCipherSpec {
-		return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		//}
-		//if err := c.rawConn.In.changeCipherSpec(); err != nil {
-		//	return c.rawConn.In.setErrorLocked(c.sendAlert(err.(alert)))
-		//}
-
-	case recordTypeApplicationData:
-		// Some OpenSSL servers send empty records in order to randomize the
-		// CBC RawIV. Ignore a limited number of empty records.
-		if len(data) == 0 {
-			return c.retryReadRecord( /*expectChangeCipherSpec*/ )
-		}
-		// Note that data is owned by c.rawInput, following the Next call above,
-		// to avoid copying the plaintext. This is safe because c.rawInput is
-		// not read from or written to until c.input is drained.
-		c.rawConn.Input.Reset(data)
-	case recordTypeHandshake:
-		if len(data) == 0 {
-			return c.rawConn.In.SetErrorLocked(c.sendAlert(alertUnexpectedMessage))
-		}
-		c.rawConn.Hand.Write(data)
-	}
-
-	return nil
-}
-
-//nolint:staticcheck
-func (c *Conn) readRawRecord() (typ uint8, data []byte, err error) {
-	// Read from kernel.
-	if c.kernelRx {
-		return c.readKernelRecord()
-	}
-
-	// Read header, payload.
-	if err = c.readFromUntil(c.conn, recordHeaderLen); err != nil {
-		// RFC 8446, Section 6.1 suggests that EOF without an alertCloseNotify
-		// is an error, but popular web sites seem to do this, so we accept it
-		// if and only if at the record boundary.
-		if err == io.ErrUnexpectedEOF && c.rawConn.RawInput.Len() == 0 {
-			err = io.EOF
-		}
-		if e, ok := err.(net.Error); !ok || !e.Temporary() {
-			c.rawConn.In.SetErrorLocked(err)
-		}
-		return
-	}
-	hdr := c.rawConn.RawInput.Bytes()[:recordHeaderLen]
-	typ = hdr[0]
-
-	vers := uint16(hdr[1])<<8 | uint16(hdr[2])
-	expectedVers := *c.rawConn.Vers
-	if expectedVers == tls.VersionTLS13 {
-		// All TLS 1.3 records are expected to have 0x0303 (1.2) after
-		// the initial hello (RFC 8446 Section 5.1).
-		expectedVers = tls.VersionTLS12
-	}
-	n := int(hdr[3])<<8 | int(hdr[4])
-	if /*c.haveVers && */ vers != expectedVers {
-		c.sendAlert(alertProtocolVersion)
-		msg := fmt.Sprintf("received record with version %x when expecting version %x", vers, expectedVers)
-		err = c.rawConn.In.SetErrorLocked(c.newRecordHeaderError(nil, msg))
-		return
-	}
-	//if !c.haveVers {
-	//	// First message, be extra suspicious: this might not be a TLS
-	//	// client. Bail out before reading a full 'body', if possible.
-	//	// The current max version is 3.3 so if the version is >= 16.0,
-	//	// it's probably not real.
-	//	if (typ != recordTypeAlert && typ != recordTypeHandshake) || vers >= 0x1000 {
-	//		err = c.rawConn.In.SetErrorLocked(c.newRecordHeaderError(c.conn, "first record does not look like a TLS handshake"))
-	//		return
-	//	}
-	//}
-	if *c.rawConn.Vers == tls.VersionTLS13 && n > maxCiphertextTLS13 || n > maxCiphertext {
-		c.sendAlert(alertRecordOverflow)
-		msg := fmt.Sprintf("oversized record received with length %d", n)
-		err = c.rawConn.In.SetErrorLocked(c.newRecordHeaderError(nil, msg))
-		return
-	}
-	if err = c.readFromUntil(c.conn, recordHeaderLen+n); err != nil {
-		if e, ok := err.(net.Error); !ok || !e.Temporary() {
-			c.rawConn.In.SetErrorLocked(err)
-		}
-		return
-	}
-
-	// Process message.
-	record := c.rawConn.RawInput.Next(recordHeaderLen + n)
-	data, typ, err = c.rawConn.In.Decrypt(record)
-	if err != nil {
-		err = c.rawConn.In.SetErrorLocked(c.sendAlert(uint8(err.(tls.AlertError))))
-		return
-	}
-	return
-}
-
-// retryReadRecord recurs into readRecordOrCCS to drop a non-advancing record, like
-// a warning alert, empty application_data, or a change_cipher_spec in TLS 1.3.
-func (c *Conn) retryReadRecord( /*expectChangeCipherSpec bool*/ ) error {
-	//c.retryCount++
-	//if c.retryCount > maxUselessRecords {
-	//	c.sendAlert(alertUnexpectedMessage)
-	//	return c.in.setErrorLocked(errors.New("tls: too many ignored records"))
-	//}
-	return c.readRecord( /*expectChangeCipherSpec*/ )
-}
-
-// atLeastReader reads from R, stopping with EOF once at least N bytes have been
-// read. It is different from an io.LimitedReader in that it doesn't cut short
-// the last Read call, and in that it considers an early EOF an error.
-type atLeastReader struct {
-	R io.Reader
-	N int64
-}
-
-func (r *atLeastReader) Read(p []byte) (int, error) {
-	if r.N <= 0 {
-		return 0, io.EOF
-	}
-	n, err := r.R.Read(p)
-	r.N -= int64(n) // won't underflow unless len(p) >= n > 9223372036854775809
-	if r.N > 0 && err == io.EOF {
-		return n, io.ErrUnexpectedEOF
-	}
-	if r.N <= 0 && err == nil {
-		return n, io.EOF
-	}
-	return n, err
-}
-
-// readFromUntil reads from r into c.rawConn.RawInput until c.rawConn.RawInput contains
-// at least n bytes or else returns an error.
-func (c *Conn) readFromUntil(r io.Reader, n int) error {
-	if c.rawConn.RawInput.Len() >= n {
-		return nil
-	}
-	needs := n - c.rawConn.RawInput.Len()
-	// There might be extra input waiting on the wire. Make a best effort
-	// attempt to fetch it so that it can be used in (*Conn).Read to
-	// "predict" closeNotify alerts.
-	c.rawConn.RawInput.Grow(needs + bytes.MinRead)
-	_, err := c.rawConn.RawInput.ReadFrom(&atLeastReader{r, int64(needs)})
-	return err
-}
-
-func (c *Conn) newRecordHeaderError(conn net.Conn, msg string) (err tls.RecordHeaderError) {
-	err.Msg = msg
-	err.Conn = conn
-	copy(err.RecordHeader[:], c.rawConn.RawInput.Bytes())
-	return err
-}

common/ktls/ktls_read_wait.go

@@ -1,41 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"github.com/sagernet/sing/common/buf"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func (c *Conn) InitializeReadWaiter(options N.ReadWaitOptions) (needCopy bool) {
-	c.readWaitOptions = options
-	return false
-}
-
-func (c *Conn) WaitReadBuffer() (buffer *buf.Buffer, err error) {
-	c.rawConn.In.Lock()
-	defer c.rawConn.In.Unlock()
-	for c.rawConn.Input.Len() == 0 {
-		err = c.readRecord()
-		if err != nil {
-			return
-		}
-	}
-	buffer = c.readWaitOptions.NewBuffer()
-	n, err := c.rawConn.Input.Read(buffer.FreeBytes())
-	if err != nil {
-		buffer.Release()
-		return
-	}
-	buffer.Truncate(n)
-	if n != 0 && c.rawConn.Input.Len() == 0 && c.rawConn.Input.Len() > 0 &&
-		c.rawConn.RawInput.Bytes()[0] == recordTypeAlert {
-		_ = c.rawConn.ReadRecord()
-	}
-	c.readWaitOptions.PostReturn(buffer)
-	return
-}

common/ktls/ktls_stub_nolinkname.go

@@ -1,15 +0,0 @@
-//go:build linux && go1.25 && !badlinkname
-
-package ktls
-
-import (
-	"context"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	aTLS "github.com/sagernet/sing/common/tls"
-)
-
-func NewConn(ctx context.Context, logger logger.ContextLogger, conn aTLS.Conn, txOffload, rxOffload bool) (aTLS.Conn, error) {
-	return nil, E.New("kTLS requires build flags `badlinkname` and `-ldflags=-checklinkname=0`, please recompile your binary")
-}

common/ktls/ktls_stub_nonlinux.go

@@ -1,15 +0,0 @@
-//go:build !linux
-
-package ktls
-
-import (
-	"context"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	aTLS "github.com/sagernet/sing/common/tls"
-)
-
-func NewConn(ctx context.Context, logger logger.ContextLogger, conn aTLS.Conn, txOffload, rxOffload bool) (aTLS.Conn, error) {
-	return nil, E.New("kTLS is only supported on Linux")
-}

common/ktls/ktls_stub_oldgo.go

@@ -1,15 +0,0 @@
-//go:build linux && !go1.25
-
-package ktls
-
-import (
-	"context"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	aTLS "github.com/sagernet/sing/common/tls"
-)
-
-func NewConn(ctx context.Context, logger logger.ContextLogger, conn aTLS.Conn, txOffload, rxOffload bool) (aTLS.Conn, error) {
-	return nil, E.New("kTLS requires Go 1.25 or later, please recompile your binary")
-}

common/ktls/ktls_write.go

@@ -1,154 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build linux && go1.25 && badlinkname
-
-package ktls
-
-import (
-	"crypto/cipher"
-	"crypto/tls"
-	"errors"
-	"net"
-)
-
-func (c *Conn) Write(b []byte) (int, error) {
-	if !c.kernelTx {
-		return c.Conn.Write(b)
-	}
-	// interlock with Close below
-	for {
-		x := c.rawConn.ActiveCall.Load()
-		if x&1 != 0 {
-			return 0, net.ErrClosed
-		}
-		if c.rawConn.ActiveCall.CompareAndSwap(x, x+2) {
-			break
-		}
-	}
-	defer c.rawConn.ActiveCall.Add(-2)
-
-	//if err := c.Conn.HandshakeContext(context.Background()); err != nil {
-	//	return 0, err
-	//}
-
-	c.rawConn.Out.Lock()
-	defer c.rawConn.Out.Unlock()
-
-	if err := *c.rawConn.Out.Err; err != nil {
-		return 0, err
-	}
-
-	if !c.rawConn.IsHandshakeComplete.Load() {
-		return 0, tls.AlertError(alertInternalError)
-	}
-
-	if *c.rawConn.CloseNotifySent {
-		// return 0, errShutdown
-		return 0, errors.New("tls: protocol is shutdown")
-	}
-
-	// TLS 1.0 is susceptible to a chosen-plaintext
-	// attack when using block mode ciphers due to predictable IVs.
-	// This can be prevented by splitting each Application Data
-	// record into two records, effectively randomizing the RawIV.
-	//
-	// https://www.openssl.org/~bodo/tls-cbc.txt
-	// https://bugzilla.mozilla.org/show_bug.cgi?id=665814
-	// https://www.imperialviolet.org/2012/01/15/beastfollowup.html
-
-	var m int
-	if len(b) > 1 && *c.rawConn.Vers == tls.VersionTLS10 {
-		if _, ok := (*c.rawConn.Out.Cipher).(cipher.BlockMode); ok {
-			n, err := c.writeRecordLocked(recordTypeApplicationData, b[:1])
-			if err != nil {
-				return n, c.rawConn.Out.SetErrorLocked(err)
-			}
-			m, b = 1, b[1:]
-		}
-	}
-
-	n, err := c.writeRecordLocked(recordTypeApplicationData, b)
-	return n + m, c.rawConn.Out.SetErrorLocked(err)
-}
-
-func (c *Conn) writeRecordLocked(typ uint16, data []byte) (n int, err error) {
-	if !c.kernelTx {
-		return c.rawConn.WriteRecordLocked(typ, data)
-	}
-	/*for len(data) > 0 {
-		m := len(data)
-		if maxPayload := c.maxPayloadSizeForWrite(typ); m > maxPayload {
-			m = maxPayload
-		}
-		_, err = c.writeKernelRecord(typ, data[:m])
-		if err != nil {
-			return
-		}
-		n += m
-		data = data[m:]
-	}*/
-	return c.writeKernelRecord(typ, data)
-}
-
-const (
-	// tcpMSSEstimate is a conservative estimate of the TCP maximum segment
-	// size (MSS). A constant is used, rather than querying the kernel for
-	// the actual MSS, to avoid complexity. The value here is the IPv6
-	// minimum MTU (1280 bytes) minus the overhead of an IPv6 header (40
-	// bytes) and a TCP header with timestamps (32 bytes).
-	tcpMSSEstimate = 1208
-
-	// recordSizeBoostThreshold is the number of bytes of application data
-	// sent after which the TLS record size will be increased to the
-	// maximum.
-	recordSizeBoostThreshold = 128 * 1024
-)
-
-func (c *Conn) maxPayloadSizeForWrite(typ uint16) int {
-	if /*c.config.DynamicRecordSizingDisabled ||*/ typ != recordTypeApplicationData {
-		return maxPlaintext
-	}
-
-	if *c.rawConn.PacketsSent >= recordSizeBoostThreshold {
-		return maxPlaintext
-	}
-
-	// Subtract TLS overheads to get the maximum payload size.
-	payloadBytes := tcpMSSEstimate - recordHeaderLen - c.rawConn.Out.ExplicitNonceLen()
-	if rawCipher := *c.rawConn.Out.Cipher; rawCipher != nil {
-		switch ciph := rawCipher.(type) {
-		case cipher.Stream:
-			payloadBytes -= (*c.rawConn.Out.Mac).Size()
-		case cipher.AEAD:
-			payloadBytes -= ciph.Overhead()
-		/*case cbcMode:
-		blockSize := ciph.BlockSize()
-		// The payload must fit in a multiple of blockSize, with
-		// room for at least one padding byte.
-		payloadBytes = (payloadBytes & ^(blockSize - 1)) - 1
-		// The RawMac is appended before padding so affects the
-		// payload size directly.
-		payloadBytes -= c.out.mac.Size()*/
-		default:
-			panic("unknown cipher type")
-		}
-	}
-	if *c.rawConn.Vers == tls.VersionTLS13 {
-		payloadBytes-- // encrypted ContentType
-	}
-
-	// Allow packet growth in arithmetic progression up to max.
-	pkt := *c.rawConn.PacketsSent
-	*c.rawConn.PacketsSent++
-	if pkt > 1000 {
-		return maxPlaintext // avoid overflow in multiply below
-	}
-
-	n := payloadBytes * int(pkt+1)
-	if n > maxPlaintext {
-		n = maxPlaintext
-	}
-	return n
-}

common/listener/listener_go121.go

@@ -0,0 +1,11 @@
+//go:build go1.21
+
+package listener
+
+import "net"
+
+const go121Available = true
+
+func setMultiPathTCP(listenConfig *net.ListenConfig) {
+	listenConfig.SetMultipathTCP(true)
+}

common/listener/listener_go123.go

@@ -0,0 +1,16 @@
+//go:build go1.23
+
+package listener
+
+import (
+	"net"
+	"time"
+)
+
+func setKeepAliveConfig(listener *net.ListenConfig, idle time.Duration, interval time.Duration) {
+	listener.KeepAliveConfig = net.KeepAliveConfig{
+		Enable:   true,
+		Idle:     idle,
+		Interval: interval,
+	}
+}

common/listener/listener_nongo121.go

@@ -0,0 +1,10 @@
+//go:build !go1.21
+
+package listener
+
+import "net"
+
+const go121Available = false
+
+func setMultiPathTCP(listenConfig *net.ListenConfig) {
+}

common/listener/listener_nongo123.go

@@ -0,0 +1,15 @@
+//go:build !go1.23
+
+package listener
+
+import (
+	"net"
+	"time"
+
+	"github.com/sagernet/sing/common/control"
+)
+
+func setKeepAliveConfig(listener *net.ListenConfig, idle time.Duration, interval time.Duration) {
+	listener.KeepAlive = idle
+	listener.Control = control.Append(listener.Control, control.SetKeepAlivePeriod(idle, interval))
+}

common/listener/listener_tcp.go

@@ -17,7 +17,7 @@ import (
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/service"
 
-	"github.com/database64128/tfo-go/v2"
+	"github.com/metacubex/tfo-go"
 )
 
 func (l *Listener) ListenTCP() (net.Listener, error) {
@@ -37,7 +37,7 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 	if l.listenOptions.ReuseAddr {
 		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
 	}
-	if !l.listenOptions.DisableTCPKeepAlive {
+	if l.listenOptions.TCPKeepAlive >= 0 {
 		keepIdle := time.Duration(l.listenOptions.TCPKeepAlive)
 		if keepIdle == 0 {
 			keepIdle = C.TCPKeepAliveInitial
@@ -46,14 +46,13 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 		if keepInterval == 0 {
 			keepInterval = C.TCPKeepAliveInterval
 		}
-		listenConfig.KeepAliveConfig = net.KeepAliveConfig{
-			Enable:   true,
-			Idle:     keepIdle,
-			Interval: keepInterval,
-		}
+		setKeepAliveConfig(&listenConfig, keepIdle, keepInterval)
 	}
 	if l.listenOptions.TCPMultiPath {
-		listenConfig.SetMultipathTCP(true)
+		if !go121Available {
+			return nil, E.New("MultiPath TCP requires go1.21, please recompile your binary.")
+		}
+		setMultiPathTCP(&listenConfig)
 	}
 	if l.tproxy {
 		listenConfig.Control = control.Append(listenConfig.Control, func(network, address string, conn syscall.RawConn) error {

common/settings/wifi.go

@@ -1,9 +0,0 @@
-package settings
-
-import "github.com/sagernet/sing-box/adapter"
-
-type WIFIMonitor interface {
-	ReadWIFIState() adapter.WIFIState
-	Start() error
-	Close() error
-}

common/settings/wifi_linux.go

@@ -1,46 +0,0 @@
-package settings
-
-import (
-	"github.com/sagernet/sing-box/adapter"
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-type LinuxWIFIMonitor struct {
-	monitor WIFIMonitor
-}
-
-func NewWIFIMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	monitors := []func(func(adapter.WIFIState)) (WIFIMonitor, error){
-		newNetworkManagerMonitor,
-		newIWDMonitor,
-		newWpaSupplicantMonitor,
-		newConnManMonitor,
-	}
-	var errors []error
-	for _, factory := range monitors {
-		monitor, err := factory(callback)
-		if err == nil {
-			return &LinuxWIFIMonitor{monitor: monitor}, nil
-		}
-		errors = append(errors, err)
-	}
-	return nil, E.Cause(E.Errors(errors...), "no supported WIFI manager found")
-}
-
-func (m *LinuxWIFIMonitor) ReadWIFIState() adapter.WIFIState {
-	return m.monitor.ReadWIFIState()
-}
-
-func (m *LinuxWIFIMonitor) Start() error {
-	if m.monitor != nil {
-		return m.monitor.Start()
-	}
-	return nil
-}
-
-func (m *LinuxWIFIMonitor) Close() error {
-	if m.monitor != nil {
-		return m.monitor.Close()
-	}
-	return nil
-}

common/settings/wifi_linux_connman.go

@@ -1,166 +0,0 @@
-package settings
-
-import (
-	"context"
-	"strings"
-	"time"
-
-	"github.com/sagernet/sing-box/adapter"
-
-	"github.com/godbus/dbus/v5"
-)
-
-type connmanMonitor struct {
-	conn       *dbus.Conn
-	callback   func(adapter.WIFIState)
-	cancel     context.CancelFunc
-	signalChan chan *dbus.Signal
-}
-
-func newConnManMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	conn, err := dbus.ConnectSystemBus()
-	if err != nil {
-		return nil, err
-	}
-	cmObj := conn.Object("net.connman", "/")
-	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-	defer cancel()
-	call := cmObj.CallWithContext(ctx, "net.connman.Manager.GetServices", 0)
-	if call.Err != nil {
-		conn.Close()
-		return nil, call.Err
-	}
-	return &connmanMonitor{conn: conn, callback: callback}, nil
-}
-
-func (m *connmanMonitor) ReadWIFIState() adapter.WIFIState {
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-
-	cmObj := m.conn.Object("net.connman", "/")
-	var services []interface{}
-	err := cmObj.CallWithContext(ctx, "net.connman.Manager.GetServices", 0).Store(&services)
-	if err != nil {
-		return adapter.WIFIState{}
-	}
-
-	for _, service := range services {
-		servicePair, ok := service.([]interface{})
-		if !ok || len(servicePair) != 2 {
-			continue
-		}
-
-		serviceProps, ok := servicePair[1].(map[string]dbus.Variant)
-		if !ok {
-			continue
-		}
-
-		typeVariant, hasType := serviceProps["Type"]
-		if !hasType {
-			continue
-		}
-		serviceType, ok := typeVariant.Value().(string)
-		if !ok || serviceType != "wifi" {
-			continue
-		}
-
-		stateVariant, hasState := serviceProps["State"]
-		if !hasState {
-			continue
-		}
-		state, ok := stateVariant.Value().(string)
-		if !ok || (state != "online" && state != "ready") {
-			continue
-		}
-
-		nameVariant, hasName := serviceProps["Name"]
-		if !hasName {
-			continue
-		}
-		ssid, ok := nameVariant.Value().(string)
-		if !ok || ssid == "" {
-			continue
-		}
-
-		bssidVariant, hasBSSID := serviceProps["BSSID"]
-		if !hasBSSID {
-			return adapter.WIFIState{SSID: ssid}
-		}
-		bssid, ok := bssidVariant.Value().(string)
-		if !ok {
-			return adapter.WIFIState{SSID: ssid}
-		}
-
-		return adapter.WIFIState{
-			SSID:  ssid,
-			BSSID: strings.ToUpper(strings.ReplaceAll(bssid, ":", "")),
-		}
-	}
-
-	return adapter.WIFIState{}
-}
-
-func (m *connmanMonitor) Start() error {
-	if m.callback == nil {
-		return nil
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	m.cancel = cancel
-
-	m.signalChan = make(chan *dbus.Signal, 10)
-	m.conn.Signal(m.signalChan)
-
-	err := m.conn.AddMatchSignal(
-		dbus.WithMatchInterface("net.connman.Service"),
-		dbus.WithMatchSender("net.connman"),
-	)
-	if err != nil {
-		return err
-	}
-
-	state := m.ReadWIFIState()
-	go m.monitorSignals(ctx, m.signalChan, state)
-	m.callback(state)
-
-	return nil
-}
-
-func (m *connmanMonitor) monitorSignals(ctx context.Context, signalChan chan *dbus.Signal, lastState adapter.WIFIState) {
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case signal, ok := <-signalChan:
-			if !ok {
-				return
-			}
-			// godbus Signal.Name uses "interface.member" format (e.g. "net.connman.Service.PropertyChanged"),
-			// not just the member name. This differs from the D-Bus signal member in the match rule.
-			if signal.Name == "net.connman.Service.PropertyChanged" {
-				state := m.ReadWIFIState()
-				if state != lastState {
-					lastState = state
-					m.callback(state)
-				}
-			}
-		}
-	}
-}
-
-func (m *connmanMonitor) Close() error {
-	if m.cancel != nil {
-		m.cancel()
-	}
-	if m.signalChan != nil {
-		m.conn.RemoveSignal(m.signalChan)
-		close(m.signalChan)
-	}
-	if m.conn != nil {
-		m.conn.RemoveMatchSignal(
-			dbus.WithMatchInterface("net.connman.Service"),
-			dbus.WithMatchSender("net.connman"),
-		)
-		return m.conn.Close()
-	}
-	return nil
-}

common/settings/wifi_linux_iwd.go

@@ -1,188 +0,0 @@
-package settings
-
-import (
-	"context"
-	"strings"
-	"time"
-
-	"github.com/sagernet/sing-box/adapter"
-
-	"github.com/godbus/dbus/v5"
-)
-
-type iwdMonitor struct {
-	conn       *dbus.Conn
-	callback   func(adapter.WIFIState)
-	cancel     context.CancelFunc
-	signalChan chan *dbus.Signal
-}
-
-func newIWDMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	conn, err := dbus.ConnectSystemBus()
-	if err != nil {
-		return nil, err
-	}
-	iwdObj := conn.Object("net.connman.iwd", "/")
-	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-	defer cancel()
-	call := iwdObj.CallWithContext(ctx, "org.freedesktop.DBus.ObjectManager.GetManagedObjects", 0)
-	if call.Err != nil {
-		conn.Close()
-		return nil, call.Err
-	}
-	return &iwdMonitor{conn: conn, callback: callback}, nil
-}
-
-func (m *iwdMonitor) ReadWIFIState() adapter.WIFIState {
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-
-	iwdObj := m.conn.Object("net.connman.iwd", "/")
-	var objects map[dbus.ObjectPath]map[string]map[string]dbus.Variant
-	err := iwdObj.CallWithContext(ctx, "org.freedesktop.DBus.ObjectManager.GetManagedObjects", 0).Store(&objects)
-	if err != nil {
-		return adapter.WIFIState{}
-	}
-
-	for _, interfaces := range objects {
-		stationProps, hasStation := interfaces["net.connman.iwd.Station"]
-		if !hasStation {
-			continue
-		}
-
-		stateVariant, hasState := stationProps["State"]
-		if !hasState {
-			continue
-		}
-		state, ok := stateVariant.Value().(string)
-		if !ok || state != "connected" {
-			continue
-		}
-
-		connectedNetworkVariant, hasNetwork := stationProps["ConnectedNetwork"]
-		if !hasNetwork {
-			continue
-		}
-		networkPath, ok := connectedNetworkVariant.Value().(dbus.ObjectPath)
-		if !ok || networkPath == "/" {
-			continue
-		}
-
-		networkInterfaces, hasNetworkPath := objects[networkPath]
-		if !hasNetworkPath {
-			continue
-		}
-
-		networkProps, hasNetworkInterface := networkInterfaces["net.connman.iwd.Network"]
-		if !hasNetworkInterface {
-			continue
-		}
-
-		nameVariant, hasName := networkProps["Name"]
-		if !hasName {
-			continue
-		}
-		ssid, ok := nameVariant.Value().(string)
-		if !ok {
-			continue
-		}
-
-		connectedBSSVariant, hasBSS := stationProps["ConnectedAccessPoint"]
-		if !hasBSS {
-			return adapter.WIFIState{SSID: ssid}
-		}
-		bssPath, ok := connectedBSSVariant.Value().(dbus.ObjectPath)
-		if !ok || bssPath == "/" {
-			return adapter.WIFIState{SSID: ssid}
-		}
-
-		bssInterfaces, hasBSSPath := objects[bssPath]
-		if !hasBSSPath {
-			return adapter.WIFIState{SSID: ssid}
-		}
-
-		bssProps, hasBSSInterface := bssInterfaces["net.connman.iwd.BasicServiceSet"]
-		if !hasBSSInterface {
-			return adapter.WIFIState{SSID: ssid}
-		}
-
-		addressVariant, hasAddress := bssProps["Address"]
-		if !hasAddress {
-			return adapter.WIFIState{SSID: ssid}
-		}
-		bssid, ok := addressVariant.Value().(string)
-		if !ok {
-			return adapter.WIFIState{SSID: ssid}
-		}
-
-		return adapter.WIFIState{
-			SSID:  ssid,
-			BSSID: strings.ToUpper(strings.ReplaceAll(bssid, ":", "")),
-		}
-	}
-
-	return adapter.WIFIState{}
-}
-
-func (m *iwdMonitor) Start() error {
-	if m.callback == nil {
-		return nil
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	m.cancel = cancel
-
-	m.signalChan = make(chan *dbus.Signal, 10)
-	m.conn.Signal(m.signalChan)
-
-	err := m.conn.AddMatchSignal(
-		dbus.WithMatchInterface("org.freedesktop.DBus.Properties"),
-		dbus.WithMatchSender("net.connman.iwd"),
-	)
-	if err != nil {
-		return err
-	}
-
-	state := m.ReadWIFIState()
-	go m.monitorSignals(ctx, m.signalChan, state)
-	m.callback(state)
-
-	return nil
-}
-
-func (m *iwdMonitor) monitorSignals(ctx context.Context, signalChan chan *dbus.Signal, lastState adapter.WIFIState) {
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case signal, ok := <-signalChan:
-			if !ok {
-				return
-			}
-			if signal.Name == "org.freedesktop.DBus.Properties.PropertiesChanged" {
-				state := m.ReadWIFIState()
-				if state != lastState {
-					lastState = state
-					m.callback(state)
-				}
-			}
-		}
-	}
-}
-
-func (m *iwdMonitor) Close() error {
-	if m.cancel != nil {
-		m.cancel()
-	}
-	if m.signalChan != nil {
-		m.conn.RemoveSignal(m.signalChan)
-		close(m.signalChan)
-	}
-	if m.conn != nil {
-		m.conn.RemoveMatchSignal(
-			dbus.WithMatchInterface("org.freedesktop.DBus.Properties"),
-			dbus.WithMatchSender("net.connman.iwd"),
-		)
-		return m.conn.Close()
-	}
-	return nil
-}

common/settings/wifi_linux_nm.go

@@ -1,163 +0,0 @@
-package settings
-
-import (
-	"context"
-	"strings"
-	"time"
-
-	"github.com/sagernet/sing-box/adapter"
-
-	"github.com/godbus/dbus/v5"
-)
-
-type networkManagerMonitor struct {
-	conn       *dbus.Conn
-	callback   func(adapter.WIFIState)
-	cancel     context.CancelFunc
-	signalChan chan *dbus.Signal
-}
-
-func newNetworkManagerMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	conn, err := dbus.ConnectSystemBus()
-	if err != nil {
-		return nil, err
-	}
-	nmObj := conn.Object("org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager")
-	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-	defer cancel()
-	var state uint32
-	err = nmObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager", "State").Store(&state)
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-	return &networkManagerMonitor{conn: conn, callback: callback}, nil
-}
-
-func (m *networkManagerMonitor) ReadWIFIState() adapter.WIFIState {
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-
-	nmObj := m.conn.Object("org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager")
-
-	var activeConnectionPaths []dbus.ObjectPath
-	err := nmObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager", "ActiveConnections").Store(&activeConnectionPaths)
-	if err != nil || len(activeConnectionPaths) == 0 {
-		return adapter.WIFIState{}
-	}
-
-	for _, connectionPath := range activeConnectionPaths {
-		connObj := m.conn.Object("org.freedesktop.NetworkManager", connectionPath)
-
-		var devicePaths []dbus.ObjectPath
-		err = connObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager.Connection.Active", "Devices").Store(&devicePaths)
-		if err != nil || len(devicePaths) == 0 {
-			continue
-		}
-
-		for _, devicePath := range devicePaths {
-			deviceObj := m.conn.Object("org.freedesktop.NetworkManager", devicePath)
-
-			var deviceType uint32
-			err = deviceObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager.Device", "DeviceType").Store(&deviceType)
-			if err != nil || deviceType != 2 {
-				continue
-			}
-
-			var accessPointPath dbus.ObjectPath
-			err = deviceObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager.Device.Wireless", "ActiveAccessPoint").Store(&accessPointPath)
-			if err != nil || accessPointPath == "/" {
-				continue
-			}
-
-			apObj := m.conn.Object("org.freedesktop.NetworkManager", accessPointPath)
-
-			var ssidBytes []byte
-			err = apObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager.AccessPoint", "Ssid").Store(&ssidBytes)
-			if err != nil {
-				continue
-			}
-
-			var hwAddress string
-			err = apObj.CallWithContext(ctx, "org.freedesktop.DBus.Properties.Get", 0, "org.freedesktop.NetworkManager.AccessPoint", "HwAddress").Store(&hwAddress)
-			if err != nil {
-				continue
-			}
-
-			ssid := strings.TrimSpace(string(ssidBytes))
-			if ssid == "" {
-				continue
-			}
-
-			return adapter.WIFIState{
-				SSID:  ssid,
-				BSSID: strings.ToUpper(strings.ReplaceAll(hwAddress, ":", "")),
-			}
-		}
-	}
-
-	return adapter.WIFIState{}
-}
-
-func (m *networkManagerMonitor) Start() error {
-	if m.callback == nil {
-		return nil
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	m.cancel = cancel
-
-	m.signalChan = make(chan *dbus.Signal, 10)
-	m.conn.Signal(m.signalChan)
-
-	err := m.conn.AddMatchSignal(
-		dbus.WithMatchSender("org.freedesktop.NetworkManager"),
-		dbus.WithMatchInterface("org.freedesktop.DBus.Properties"),
-	)
-	if err != nil {
-		return err
-	}
-
-	state := m.ReadWIFIState()
-	go m.monitorSignals(ctx, m.signalChan, state)
-	m.callback(state)
-
-	return nil
-}
-
-func (m *networkManagerMonitor) monitorSignals(ctx context.Context, signalChan chan *dbus.Signal, lastState adapter.WIFIState) {
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case signal, ok := <-signalChan:
-			if !ok {
-				return
-			}
-			if signal.Name == "org.freedesktop.DBus.Properties.PropertiesChanged" {
-				state := m.ReadWIFIState()
-				if state != lastState {
-					lastState = state
-					m.callback(state)
-				}
-			}
-		}
-	}
-}
-
-func (m *networkManagerMonitor) Close() error {
-	if m.cancel != nil {
-		m.cancel()
-	}
-	if m.signalChan != nil {
-		m.conn.RemoveSignal(m.signalChan)
-		close(m.signalChan)
-	}
-	if m.conn != nil {
-		m.conn.RemoveMatchSignal(
-			dbus.WithMatchSender("org.freedesktop.NetworkManager"),
-			dbus.WithMatchInterface("org.freedesktop.DBus.Properties"),
-		)
-		return m.conn.Close()
-	}
-	return nil
-}

common/settings/wifi_linux_wpa.go

@@ -1,225 +0,0 @@
-package settings
-
-import (
-	"bufio"
-	"context"
-	"fmt"
-	"net"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/sagernet/sing-box/adapter"
-)
-
-var wpaSocketCounter atomic.Uint64
-
-type wpaSupplicantMonitor struct {
-	socketPath  string
-	callback    func(adapter.WIFIState)
-	cancel      context.CancelFunc
-	monitorConn *net.UnixConn
-	connMutex   sync.Mutex
-}
-
-func newWpaSupplicantMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	socketDirs := []string{"/var/run/wpa_supplicant", "/run/wpa_supplicant"}
-	for _, socketDir := range socketDirs {
-		entries, err := os.ReadDir(socketDir)
-		if err != nil {
-			continue
-		}
-		for _, entry := range entries {
-			if entry.IsDir() || entry.Name() == "." || entry.Name() == ".." {
-				continue
-			}
-			socketPath := filepath.Join(socketDir, entry.Name())
-			id := wpaSocketCounter.Add(1)
-			localAddr := &net.UnixAddr{Name: fmt.Sprintf("@sing-box-wpa-%d-%d", os.Getpid(), id), Net: "unixgram"}
-			remoteAddr := &net.UnixAddr{Name: socketPath, Net: "unixgram"}
-			conn, err := net.DialUnix("unixgram", localAddr, remoteAddr)
-			if err != nil {
-				continue
-			}
-			conn.Close()
-			return &wpaSupplicantMonitor{socketPath: socketPath, callback: callback}, nil
-		}
-	}
-	return nil, os.ErrNotExist
-}
-
-func (m *wpaSupplicantMonitor) ReadWIFIState() adapter.WIFIState {
-	id := wpaSocketCounter.Add(1)
-	localAddr := &net.UnixAddr{Name: fmt.Sprintf("@sing-box-wpa-%d-%d", os.Getpid(), id), Net: "unixgram"}
-	remoteAddr := &net.UnixAddr{Name: m.socketPath, Net: "unixgram"}
-	conn, err := net.DialUnix("unixgram", localAddr, remoteAddr)
-	if err != nil {
-		return adapter.WIFIState{}
-	}
-	defer conn.Close()
-
-	conn.SetDeadline(time.Now().Add(3 * time.Second))
-
-	status, err := m.sendCommand(conn, "STATUS")
-	if err != nil {
-		return adapter.WIFIState{}
-	}
-
-	var ssid, bssid string
-	var connected bool
-	scanner := bufio.NewScanner(strings.NewReader(status))
-	for scanner.Scan() {
-		line := scanner.Text()
-		if strings.HasPrefix(line, "wpa_state=") {
-			state := strings.TrimPrefix(line, "wpa_state=")
-			connected = state == "COMPLETED"
-		} else if strings.HasPrefix(line, "ssid=") {
-			ssid = strings.TrimPrefix(line, "ssid=")
-		} else if strings.HasPrefix(line, "bssid=") {
-			bssid = strings.TrimPrefix(line, "bssid=")
-		}
-	}
-
-	if !connected || ssid == "" {
-		return adapter.WIFIState{}
-	}
-
-	return adapter.WIFIState{
-		SSID:  ssid,
-		BSSID: strings.ToUpper(strings.ReplaceAll(bssid, ":", "")),
-	}
-}
-
-// sendCommand sends a command to wpa_supplicant and returns the response.
-// Commands are sent without trailing newlines per the wpa_supplicant control
-// interface protocol - the official wpa_ctrl.c sends raw command strings.
-func (m *wpaSupplicantMonitor) sendCommand(conn *net.UnixConn, command string) (string, error) {
-	_, err := conn.Write([]byte(command))
-	if err != nil {
-		return "", err
-	}
-
-	buf := make([]byte, 4096)
-	n, err := conn.Read(buf)
-	if err != nil {
-		return "", err
-	}
-
-	response := string(buf[:n])
-	if strings.HasPrefix(response, "FAIL") {
-		return "", os.ErrInvalid
-	}
-
-	return strings.TrimSpace(response), nil
-}
-
-func (m *wpaSupplicantMonitor) Start() error {
-	if m.callback == nil {
-		return nil
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	m.cancel = cancel
-
-	state := m.ReadWIFIState()
-	go m.monitorEvents(ctx, state)
-	m.callback(state)
-
-	return nil
-}
-
-func (m *wpaSupplicantMonitor) monitorEvents(ctx context.Context, lastState adapter.WIFIState) {
-	var consecutiveErrors int
-	var debounceTimer *time.Timer
-	var debounceMutex sync.Mutex
-
-	localAddr := &net.UnixAddr{Name: fmt.Sprintf("@sing-box-wpa-mon-%d", os.Getpid()), Net: "unixgram"}
-	remoteAddr := &net.UnixAddr{Name: m.socketPath, Net: "unixgram"}
-	conn, err := net.DialUnix("unixgram", localAddr, remoteAddr)
-	if err != nil {
-		return
-	}
-	defer conn.Close()
-
-	m.connMutex.Lock()
-	m.monitorConn = conn
-	m.connMutex.Unlock()
-
-	// ATTACH/DETACH commands use os_strcmp() for exact matching in wpa_supplicant,
-	// so they must be sent without trailing newlines.
-	// See: https://w1.fi/cgit/hostap/tree/wpa_supplicant/ctrl_iface_unix.c
-	_, err = conn.Write([]byte("ATTACH"))
-	if err != nil {
-		return
-	}
-
-	buf := make([]byte, 4096)
-	n, err := conn.Read(buf)
-	if err != nil || !strings.HasPrefix(string(buf[:n]), "OK") {
-		return
-	}
-
-	for {
-		select {
-		case <-ctx.Done():
-			debounceMutex.Lock()
-			if debounceTimer != nil {
-				debounceTimer.Stop()
-			}
-			debounceMutex.Unlock()
-			conn.Write([]byte("DETACH"))
-			return
-		default:
-		}
-
-		conn.SetReadDeadline(time.Now().Add(30 * time.Second))
-		n, err := conn.Read(buf)
-		if err != nil {
-			if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
-				continue
-			}
-			select {
-			case <-ctx.Done():
-				return
-			default:
-			}
-			consecutiveErrors++
-			if consecutiveErrors > 10 {
-				return
-			}
-			time.Sleep(time.Second)
-			continue
-		}
-		consecutiveErrors = 0
-
-		msg := string(buf[:n])
-		if strings.Contains(msg, "CTRL-EVENT-CONNECTED") || strings.Contains(msg, "CTRL-EVENT-DISCONNECTED") {
-			debounceMutex.Lock()
-			if debounceTimer != nil {
-				debounceTimer.Stop()
-			}
-			debounceTimer = time.AfterFunc(500*time.Millisecond, func() {
-				state := m.ReadWIFIState()
-				if state != lastState {
-					lastState = state
-					m.callback(state)
-				}
-			})
-			debounceMutex.Unlock()
-		}
-	}
-}
-
-func (m *wpaSupplicantMonitor) Close() error {
-	if m.cancel != nil {
-		m.cancel()
-	}
-	m.connMutex.Lock()
-	if m.monitorConn != nil {
-		m.monitorConn.Close()
-	}
-	m.connMutex.Unlock()
-	return nil
-}

common/settings/wifi_stub.go

@@ -1,27 +0,0 @@
-//go:build !linux && !windows
-
-package settings
-
-import (
-	"os"
-
-	"github.com/sagernet/sing-box/adapter"
-)
-
-type stubWIFIMonitor struct{}
-
-func NewWIFIMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	return nil, os.ErrInvalid
-}
-
-func (m *stubWIFIMonitor) ReadWIFIState() adapter.WIFIState {
-	return adapter.WIFIState{}
-}
-
-func (m *stubWIFIMonitor) Start() error {
-	return nil
-}
-
-func (m *stubWIFIMonitor) Close() error {
-	return nil
-}

common/settings/wifi_windows.go

@@ -1,144 +0,0 @@
-//go:build windows
-
-package settings
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"sync"
-	"syscall"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing/common/winwlanapi"
-
-	"golang.org/x/sys/windows"
-)
-
-type windowsWIFIMonitor struct {
-	handle    windows.Handle
-	callback  func(adapter.WIFIState)
-	cancel    context.CancelFunc
-	lastState adapter.WIFIState
-	mutex     sync.Mutex
-}
-
-func NewWIFIMonitor(callback func(adapter.WIFIState)) (WIFIMonitor, error) {
-	handle, err := winwlanapi.OpenHandle()
-	if err != nil {
-		return nil, err
-	}
-
-	interfaces, err := winwlanapi.EnumInterfaces(handle)
-	if err != nil {
-		winwlanapi.CloseHandle(handle)
-		return nil, err
-	}
-	if len(interfaces) == 0 {
-		winwlanapi.CloseHandle(handle)
-		return nil, fmt.Errorf("no wireless interfaces found")
-	}
-
-	return &windowsWIFIMonitor{
-		handle:   handle,
-		callback: callback,
-	}, nil
-}
-
-func (m *windowsWIFIMonitor) ReadWIFIState() adapter.WIFIState {
-	interfaces, err := winwlanapi.EnumInterfaces(m.handle)
-	if err != nil || len(interfaces) == 0 {
-		return adapter.WIFIState{}
-	}
-
-	for _, iface := range interfaces {
-		if iface.InterfaceState != winwlanapi.InterfaceStateConnected {
-			continue
-		}
-
-		guid := iface.InterfaceGUID
-		attrs, err := winwlanapi.QueryCurrentConnection(m.handle, &guid)
-		if err != nil {
-			continue
-		}
-
-		ssidLength := attrs.AssociationAttributes.SSID.Length
-		if ssidLength == 0 || ssidLength > winwlanapi.Dot11SSIDMaxLength {
-			continue
-		}
-
-		ssid := string(attrs.AssociationAttributes.SSID.SSID[:ssidLength])
-		bssid := formatBSSID(attrs.AssociationAttributes.BSSID)
-
-		return adapter.WIFIState{
-			SSID:  strings.TrimSpace(ssid),
-			BSSID: bssid,
-		}
-	}
-
-	return adapter.WIFIState{}
-}
-
-func formatBSSID(mac winwlanapi.Dot11MacAddress) string {
-	return fmt.Sprintf("%02X%02X%02X%02X%02X%02X",
-		mac[0], mac[1], mac[2], mac[3], mac[4], mac[5])
-}
-
-func (m *windowsWIFIMonitor) Start() error {
-	if m.callback == nil {
-		return nil
-	}
-
-	ctx, cancel := context.WithCancel(context.Background())
-	m.cancel = cancel
-
-	m.lastState = m.ReadWIFIState()
-
-	callbackFunc := func(data *winwlanapi.NotificationData, callbackContext uintptr) uintptr {
-		if data.NotificationSource != winwlanapi.NotificationSourceACM {
-			return 0
-		}
-		switch data.NotificationCode {
-		case winwlanapi.NotificationACMConnectionComplete,
-			winwlanapi.NotificationACMDisconnected:
-			m.checkAndNotify()
-		}
-		return 0
-	}
-
-	callbackPointer := syscall.NewCallback(callbackFunc)
-
-	err := winwlanapi.RegisterNotification(m.handle, winwlanapi.NotificationSourceACM, callbackPointer, 0)
-	if err != nil {
-		cancel()
-		return err
-	}
-
-	go func() {
-		<-ctx.Done()
-	}()
-
-	m.callback(m.lastState)
-	return nil
-}
-
-func (m *windowsWIFIMonitor) checkAndNotify() {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	state := m.ReadWIFIState()
-	if state != m.lastState {
-		m.lastState = state
-		if m.callback != nil {
-			m.callback(state)
-		}
-	}
-}
-
-func (m *windowsWIFIMonitor) Close() error {
-	if m.cancel != nil {
-		m.cancel()
-	}
-	winwlanapi.UnregisterNotification(m.handle)
-	return winwlanapi.CloseHandle(m.handle)
-}

common/sniff/quic.go

@@ -303,8 +303,6 @@ find:
 	metadata.Protocol = C.ProtocolQUIC
 	fingerprint, err := ja3.Compute(buffer.Bytes())
 	if err != nil {
-		metadata.Protocol = C.ProtocolQUIC
-		metadata.Client = C.ClientChromium
 		metadata.SniffContext = fragments
 		return E.Cause1(ErrNeedMoreData, err)
 	}
@@ -334,7 +332,7 @@ find:
 		}
 
 		if count(frameTypeList, frameTypeCrypto) > 1 || count(frameTypeList, frameTypePing) > 0 {
-			if maybeUQUIC(fingerprint) {
+			if isQUICGo(fingerprint) {
 				metadata.Client = C.ClientQUICGo
 			} else {
 				metadata.Client = C.ClientChromium

common/sniff/quic_blacklist.go

@@ -1,21 +1,29 @@
 package sniff
 
 import (
-	"crypto/tls"
-
 	"github.com/sagernet/sing-box/common/ja3"
 )
 
-// Chromium sends separate client hello packets, but UQUIC has not yet implemented this behavior
-// The cronet without this behavior does not have version 115
-var uQUICChrome115 = &ja3.ClientHello{
-	Version:             tls.VersionTLS12,
-	CipherSuites:        []uint16{4865, 4866, 4867},
-	Extensions:          []uint16{0, 10, 13, 16, 27, 43, 45, 51, 57, 17513},
-	EllipticCurves:      []uint16{29, 23, 24},
-	SignatureAlgorithms: []uint16{1027, 2052, 1025, 1283, 2053, 1281, 2054, 1537, 513},
-}
+const (
+	// X25519Kyber768Draft00 - post-quantum curve used by Go crypto/tls
+	x25519Kyber768Draft00 uint16 = 0x11EC // 4588
+	// renegotiation_info extension used by Go crypto/tls
+	extensionRenegotiationInfo uint16 = 0xFF01 // 65281
+)
 
-func maybeUQUIC(fingerprint *ja3.ClientHello) bool {
-	return !uQUICChrome115.Equals(fingerprint, true)
+// isQUICGo detects native quic-go by checking for Go crypto/tls specific features.
+// Note: uQUIC with Chromium mimicry cannot be reliably distinguished from real Chromium
+// since it uses the same TLS fingerprint, so it will be identified as Chromium.
+func isQUICGo(fingerprint *ja3.ClientHello) bool {
+	for _, curve := range fingerprint.EllipticCurves {
+		if curve == x25519Kyber768Draft00 {
+			return true
+		}
+	}
+	for _, ext := range fingerprint.Extensions {
+		if ext == extensionRenegotiationInfo {
+			return true
+		}
+	}
+	return false
 }

common/sniff/quic_capture_test.go

@@ -0,0 +1,188 @@
+package sniff_test
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/hex"
+	"errors"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/sagernet/quic-go"
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/sniff"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSniffQUICQuicGoFingerprint(t *testing.T) {
+	t.Parallel()
+	const testSNI = "test.example.com"
+
+	udpConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer udpConn.Close()
+
+	serverAddr := udpConn.LocalAddr().(*net.UDPAddr)
+	packetsChan := make(chan [][]byte, 1)
+
+	go func() {
+		var packets [][]byte
+		udpConn.SetReadDeadline(time.Now().Add(3 * time.Second))
+		for i := 0; i < 10; i++ {
+			buf := make([]byte, 2048)
+			n, _, err := udpConn.ReadFromUDP(buf)
+			if err != nil {
+				break
+			}
+			packets = append(packets, buf[:n])
+		}
+		packetsChan <- packets
+	}()
+
+	clientConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	tlsConfig := &tls.Config{
+		ServerName:         testSNI,
+		InsecureSkipVerify: true,
+		NextProtos:         []string{"h3"},
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	_, _ = quic.Dial(ctx, clientConn, serverAddr, tlsConfig, &quic.Config{})
+
+	select {
+	case packets := <-packetsChan:
+		t.Logf("Captured %d packets", len(packets))
+
+		var metadata adapter.InboundContext
+		for i, pkt := range packets {
+			err := sniff.QUICClientHello(context.Background(), &metadata, pkt)
+			t.Logf("Packet %d: err=%v, domain=%s, client=%s", i, err, metadata.Domain, metadata.Client)
+			if metadata.Domain != "" {
+				break
+			}
+		}
+
+		t.Logf("\n=== quic-go TLS Fingerprint Analysis ===")
+		t.Logf("Domain: %s", metadata.Domain)
+		t.Logf("Client: %s", metadata.Client)
+		t.Logf("Protocol: %s", metadata.Protocol)
+
+		// The client should be identified as quic-go, not chromium
+		// Current issue: it's being identified as chromium
+		if metadata.Client == "chromium" {
+			t.Log("WARNING: quic-go is being misidentified as chromium!")
+		}
+
+	case <-time.After(5 * time.Second):
+		t.Fatal("Timeout")
+	}
+}
+
+func TestSniffQUICInitialFromQuicGo(t *testing.T) {
+	t.Parallel()
+
+	const testSNI = "test.example.com"
+
+	// Create UDP listener to capture ALL initial packets
+	udpConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer udpConn.Close()
+
+	serverAddr := udpConn.LocalAddr().(*net.UDPAddr)
+
+	// Channel to receive captured packets
+	packetsChan := make(chan [][]byte, 1)
+
+	// Start goroutine to capture packets
+	go func() {
+		var packets [][]byte
+		udpConn.SetReadDeadline(time.Now().Add(3 * time.Second))
+		for i := 0; i < 5; i++ { // Capture up to 5 packets
+			buf := make([]byte, 2048)
+			n, _, err := udpConn.ReadFromUDP(buf)
+			if err != nil {
+				break
+			}
+			packets = append(packets, buf[:n])
+		}
+		packetsChan <- packets
+	}()
+
+	// Create QUIC client connection (will fail but we capture the initial packet)
+	clientConn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
+	require.NoError(t, err)
+	defer clientConn.Close()
+
+	tlsConfig := &tls.Config{
+		ServerName:         testSNI,
+		InsecureSkipVerify: true,
+		NextProtos:         []string{"h3"},
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	// This will fail (no server) but sends initial packet
+	_, _ = quic.Dial(ctx, clientConn, serverAddr, tlsConfig, &quic.Config{})
+
+	// Wait for captured packets
+	select {
+	case packets := <-packetsChan:
+		t.Logf("Captured %d QUIC packets", len(packets))
+
+		for i, packet := range packets {
+			t.Logf("Packet %d: length=%d, first 30 bytes: %x", i, len(packet), packet[:min(30, len(packet))])
+		}
+
+		// Test sniffer with first packet
+		if len(packets) > 0 {
+			var metadata adapter.InboundContext
+			err := sniff.QUICClientHello(context.Background(), &metadata, packets[0])
+
+			t.Logf("First packet sniff error: %v", err)
+			t.Logf("Protocol: %s", metadata.Protocol)
+			t.Logf("Domain: %s", metadata.Domain)
+			t.Logf("Client: %s", metadata.Client)
+
+			// If first packet needs more data, try with subsequent packets
+			// IMPORTANT: reuse metadata to accumulate CRYPTO fragments via SniffContext
+			if errors.Is(err, sniff.ErrNeedMoreData) && len(packets) > 1 {
+				t.Log("First packet needs more data, trying subsequent packets with shared context...")
+				for i := 1; i < len(packets); i++ {
+					// Reuse same metadata to accumulate fragments
+					err = sniff.QUICClientHello(context.Background(), &metadata, packets[i])
+					t.Logf("Packet %d sniff result: err=%v, domain=%s, sniffCtx=%v", i, err, metadata.Domain, metadata.SniffContext != nil)
+					if metadata.Domain != "" || (err != nil && !errors.Is(err, sniff.ErrNeedMoreData)) {
+						break
+					}
+				}
+			}
+
+			// Print hex dump for debugging
+			t.Logf("First packet hex:\n%s", hex.Dump(packets[0][:min(256, len(packets[0]))]))
+
+			// Log final results
+			t.Logf("Final: Protocol=%s, Domain=%s, Client=%s", metadata.Protocol, metadata.Domain, metadata.Client)
+
+			// Verify SNI extraction
+			if metadata.Domain == "" {
+				t.Errorf("Failed to extract SNI, expected: %s", testSNI)
+			} else {
+				require.Equal(t, testSNI, metadata.Domain, "SNI should match")
+			}
+
+			// Check client identification - quic-go should be identified as quic-go, not chromium
+			t.Logf("Client identified as: %s (expected: quic-go)", metadata.Client)
+		}
+
+	case <-time.After(5 * time.Second):
+		t.Fatal("Timeout waiting for QUIC packets")
+	}
+}

common/sniff/quic_test.go

@@ -19,7 +19,7 @@ func TestSniffQUICChromeNew(t *testing.T) {
 	var metadata adapter.InboundContext
 	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
 	require.Equal(t, metadata.Protocol, C.ProtocolQUIC)
-	require.Equal(t, metadata.Client, C.ClientChromium)
+	require.Empty(t, metadata.Client)
 	require.ErrorIs(t, err, sniff.ErrNeedMoreData)
 	pkt, err = hex.DecodeString("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")
 	require.NoError(t, err)
@@ -39,7 +39,7 @@ func TestSniffQUICChromium(t *testing.T) {
 	var metadata adapter.InboundContext
 	err = sniff.QUICClientHello(context.Background(), &metadata, pkt)
 	require.Equal(t, metadata.Protocol, C.ProtocolQUIC)
-	require.Equal(t, metadata.Client, C.ClientChromium)
+	require.Empty(t, metadata.Client)
 	require.ErrorIs(t, err, sniff.ErrNeedMoreData)
 	pkt, err = hex.DecodeString("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")
 	require.NoError(t, err)

common/srs/binary.go

@@ -12,8 +12,6 @@ import (
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/domain"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/json/badjson"
-	"github.com/sagernet/sing/common/json/badoption"
 	"github.com/sagernet/sing/common/varbin"
 
 	"go4.org/netipx"
@@ -43,8 +41,6 @@ const (
 	ruleItemNetworkType
 	ruleItemNetworkIsExpensive
 	ruleItemNetworkIsConstrained
-	ruleItemNetworkInterfaceAddress
-	ruleItemDefaultInterfaceAddress
 	ruleItemFinal uint8 = 0xFF
 )
 
@@ -234,51 +230,6 @@ func readDefaultRule(reader varbin.Reader, recover bool) (rule option.DefaultHea
 			rule.NetworkIsExpensive = true
 		case ruleItemNetworkIsConstrained:
 			rule.NetworkIsConstrained = true
-		case ruleItemNetworkInterfaceAddress:
-			rule.NetworkInterfaceAddress = new(badjson.TypedMap[option.InterfaceType, badoption.Listable[*badoption.Prefixable]])
-			var size uint64
-			size, err = binary.ReadUvarint(reader)
-			if err != nil {
-				return
-			}
-			for i := uint64(0); i < size; i++ {
-				var key uint8
-				err = binary.Read(reader, binary.BigEndian, &key)
-				if err != nil {
-					return
-				}
-				var value []*badoption.Prefixable
-				var prefixCount uint64
-				prefixCount, err = binary.ReadUvarint(reader)
-				if err != nil {
-					return
-				}
-				for j := uint64(0); j < prefixCount; j++ {
-					var prefix netip.Prefix
-					prefix, err = readPrefix(reader)
-					if err != nil {
-						return
-					}
-					value = append(value, common.Ptr(badoption.Prefixable(prefix)))
-				}
-				rule.NetworkInterfaceAddress.Put(option.InterfaceType(key), value)
-			}
-		case ruleItemDefaultInterfaceAddress:
-			var value []*badoption.Prefixable
-			var prefixCount uint64
-			prefixCount, err = binary.ReadUvarint(reader)
-			if err != nil {
-				return
-			}
-			for j := uint64(0); j < prefixCount; j++ {
-				var prefix netip.Prefix
-				prefix, err = readPrefix(reader)
-				if err != nil {
-					return
-				}
-				value = append(value, common.Ptr(badoption.Prefixable(prefix)))
-			}
-			rule.DefaultInterfaceAddress = value
 		case ruleItemFinal:
 			err = binary.Read(reader, binary.BigEndian, &rule.Invert)
 			return
@@ -395,7 +346,7 @@ func writeDefaultRule(writer varbin.Writer, rule option.DefaultHeadlessRule, gen
 	}
 	if len(rule.NetworkType) > 0 {
 		if generateVersion < C.RuleSetVersion3 {
-			return E.New("`network_type` rule item is only supported in version 3 or later")
+			return E.New("network_type rule item is only supported in version 3 or later")
 		}
 		err = writeRuleItemUint8(writer, ruleItemNetworkType, rule.NetworkType)
 		if err != nil {
@@ -403,71 +354,17 @@ func writeDefaultRule(writer varbin.Writer, rule option.DefaultHeadlessRule, gen
 		}
 	}
 	if rule.NetworkIsExpensive {
-		if generateVersion < C.RuleSetVersion3 {
-			return E.New("`network_is_expensive` rule item is only supported in version 3 or later")
-		}
 		err = binary.Write(writer, binary.BigEndian, ruleItemNetworkIsExpensive)
 		if err != nil {
 			return err
 		}
 	}
 	if rule.NetworkIsConstrained {
-		if generateVersion < C.RuleSetVersion3 {
-			return E.New("`network_is_constrained` rule item is only supported in version 3 or later")
-		}
 		err = binary.Write(writer, binary.BigEndian, ruleItemNetworkIsConstrained)
 		if err != nil {
 			return err
 		}
 	}
-	if rule.NetworkInterfaceAddress != nil && rule.NetworkInterfaceAddress.Size() > 0 {
-		if generateVersion < C.RuleSetVersion4 {
-			return E.New("`network_interface_address` rule item is only supported in version 4 or later")
-		}
-		err = writer.WriteByte(ruleItemNetworkInterfaceAddress)
-		if err != nil {
-			return err
-		}
-		_, err = varbin.WriteUvarint(writer, uint64(rule.NetworkInterfaceAddress.Size()))
-		if err != nil {
-			return err
-		}
-		for _, entry := range rule.NetworkInterfaceAddress.Entries() {
-			err = binary.Write(writer, binary.BigEndian, uint8(entry.Key.Build()))
-			if err != nil {
-				return err
-			}
-			_, err = varbin.WriteUvarint(writer, uint64(len(entry.Value)))
-			if err != nil {
-				return err
-			}
-			for _, rawPrefix := range entry.Value {
-				err = writePrefix(writer, rawPrefix.Build(netip.Prefix{}))
-				if err != nil {
-					return err
-				}
-			}
-		}
-	}
-	if len(rule.DefaultInterfaceAddress) > 0 {
-		if generateVersion < C.RuleSetVersion4 {
-			return E.New("`default_interface_address` rule item is only supported in version 4 or later")
-		}
-		err = writer.WriteByte(ruleItemDefaultInterfaceAddress)
-		if err != nil {
-			return err
-		}
-		_, err = varbin.WriteUvarint(writer, uint64(len(rule.DefaultInterfaceAddress)))
-		if err != nil {
-			return err
-		}
-		for _, rawPrefix := range rule.DefaultInterfaceAddress {
-			err = writePrefix(writer, rawPrefix.Build(netip.Prefix{}))
-			if err != nil {
-				return err
-			}
-		}
-	}
 	if len(rule.WIFISSID) > 0 {
 		err = writeRuleItemString(writer, ruleItemWIFISSID, rule.WIFISSID)
 		if err != nil {

common/srs/ip_cidr.go

@@ -1,33 +0,0 @@
-package srs
-
-import (
-	"encoding/binary"
-	"net/netip"
-
-	M "github.com/sagernet/sing/common/metadata"
-	"github.com/sagernet/sing/common/varbin"
-)
-
-func readPrefix(reader varbin.Reader) (netip.Prefix, error) {
-	addrSlice, err := varbin.ReadValue[[]byte](reader, binary.BigEndian)
-	if err != nil {
-		return netip.Prefix{}, err
-	}
-	prefixBits, err := varbin.ReadValue[uint8](reader, binary.BigEndian)
-	if err != nil {
-		return netip.Prefix{}, err
-	}
-	return netip.PrefixFrom(M.AddrFromIP(addrSlice), int(prefixBits)), nil
-}
-
-func writePrefix(writer varbin.Writer, prefix netip.Prefix) error {
-	err := varbin.Write(writer, binary.BigEndian, prefix.Addr().AsSlice())
-	if err != nil {
-		return err
-	}
-	err = binary.Write(writer, binary.BigEndian, uint8(prefix.Bits()))
-	if err != nil {
-		return err
-	}
-	return nil
-}

common/tls/client.go

@@ -2,71 +2,39 @@ package tls
 
 import (
 	"context"
-	"crypto/tls"
-	"errors"
 	"net"
 	"os"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/badtls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	aTLS "github.com/sagernet/sing/common/tls"
 )
 
-func NewDialerFromOptions(ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, serverAddress string, options option.OutboundTLSOptions) (N.Dialer, error) {
+func NewDialerFromOptions(ctx context.Context, router adapter.Router, dialer N.Dialer, serverAddress string, options option.OutboundTLSOptions) (N.Dialer, error) {
 	if !options.Enabled {
 		return dialer, nil
 	}
-	config, err := NewClientWithOptions(ClientOptions{
-		Context:       ctx,
-		Logger:        logger,
-		ServerAddress: serverAddress,
-		Options:       options,
-	})
+	config, err := NewClient(ctx, serverAddress, options)
 	if err != nil {
 		return nil, err
 	}
 	return NewDialer(dialer, config), nil
 }
 
-func NewClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	return NewClientWithOptions(ClientOptions{
-		Context:       ctx,
-		Logger:        logger,
-		ServerAddress: serverAddress,
-		Options:       options,
-	})
-}
-
-type ClientOptions struct {
-	Context        context.Context
-	Logger         logger.ContextLogger
-	ServerAddress  string
-	Options        option.OutboundTLSOptions
-	KTLSCompatible bool
-}
-
-func NewClientWithOptions(options ClientOptions) (Config, error) {
-	if !options.Options.Enabled {
+func NewClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+	if !options.Enabled {
 		return nil, nil
 	}
-	if !options.KTLSCompatible {
-		if options.Options.KernelTx {
-			options.Logger.Warn("enabling kTLS TX in current scenarios will definitely reduce performance, please checkout https://sing-box.sagernet.org/configuration/shared/tls/#kernel_tx")
-		}
+	if options.Reality != nil && options.Reality.Enabled {
+		return NewRealityClient(ctx, serverAddress, options)
+	} else if options.UTLS != nil && options.UTLS.Enabled {
+		return NewUTLSClient(ctx, serverAddress, options)
 	}
-	if options.Options.KernelRx {
-		options.Logger.Warn("enabling kTLS RX will definitely reduce performance, please checkout https://sing-box.sagernet.org/configuration/shared/tls/#kernel_rx")
-	}
-	if options.Options.Reality != nil && options.Options.Reality.Enabled {
-		return NewRealityClient(options.Context, options.Logger, options.ServerAddress, options.Options)
-	} else if options.Options.UTLS != nil && options.Options.UTLS.Enabled {
-		return NewUTLSClient(options.Context, options.Logger, options.ServerAddress, options.Options)
-	}
-	return NewSTDClient(options.Context, options.Logger, options.ServerAddress, options.Options)
+	return NewSTDClient(ctx, serverAddress, options)
 }
 
 func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, error) {
@@ -111,10 +79,10 @@ func (d *defaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 }
 
 func (d *defaultDialer) DialTLSContext(ctx context.Context, destination M.Socksaddr) (Conn, error) {
-	return d.dialContext(ctx, destination, true)
+	return d.dialContext(ctx, destination)
 }
 
-func (d *defaultDialer) dialContext(ctx context.Context, destination M.Socksaddr, echRetry bool) (Conn, error) {
+func (d *defaultDialer) dialContext(ctx context.Context, destination M.Socksaddr) (Conn, error) {
 	conn, err := d.dialer.DialContext(ctx, N.NetworkTCP, destination)
 	if err != nil {
 		return nil, err
@@ -122,13 +90,6 @@ func (d *defaultDialer) dialContext(ctx context.Context, destination M.Socksaddr
 	tlsConn, err := aTLS.ClientHandshake(ctx, conn, d.config)
 	if err != nil {
 		conn.Close()
-		var echErr *tls.ECHRejectionError
-		if echRetry && errors.As(err, &echErr) && len(echErr.RetryConfigList) > 0 {
-			if echConfig, isECH := d.config.(ECHCapableConfig); isECH {
-				echConfig.SetECHConfigList(echErr.RetryConfigList)
-				return d.dialContext(ctx, destination, false)
-			}
-		}
 		return nil, err
 	}
 	return tlsConn, nil

common/tls/ech_stub.go

@@ -0,0 +1,23 @@
+//go:build !go1.24
+
+package tls
+
+import (
+	"context"
+	"crypto/tls"
+
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func parseECHClientConfig(ctx context.Context, clientConfig ECHCapableConfig, options option.OutboundTLSOptions) (Config, error) {
+	return nil, E.New("ECH requires go1.24, please recompile your binary.")
+}
+
+func parseECHServerConfig(ctx context.Context, options option.InboundTLSOptions, tlsConfig *tls.Config, echKeyPath *string) error {
+	return E.New("ECH requires go1.24, please recompile your binary.")
+}
+
+func (c *STDServerConfig) setECHServerConfig(echKey []byte) error {
+	panic("unreachable")
+}

common/tls/ktls.go

@@ -1,67 +0,0 @@
-package tls
-
-import (
-	"context"
-	"net"
-
-	"github.com/sagernet/sing-box/common/ktls"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	aTLS "github.com/sagernet/sing/common/tls"
-)
-
-type KTLSClientConfig struct {
-	Config
-	logger             logger.ContextLogger
-	kernelTx, kernelRx bool
-}
-
-func (w *KTLSClientConfig) ClientHandshake(ctx context.Context, conn net.Conn) (aTLS.Conn, error) {
-	tlsConn, err := aTLS.ClientHandshake(ctx, conn, w.Config)
-	if err != nil {
-		return nil, err
-	}
-	kConn, err := ktls.NewConn(ctx, w.logger, tlsConn, w.kernelTx, w.kernelRx)
-	if err != nil {
-		tlsConn.Close()
-		return nil, E.Cause(err, "initialize kernel TLS")
-	}
-	return kConn, nil
-}
-
-func (w *KTLSClientConfig) Clone() Config {
-	return &KTLSClientConfig{
-		w.Config.Clone(),
-		w.logger,
-		w.kernelTx,
-		w.kernelRx,
-	}
-}
-
-type KTlSServerConfig struct {
-	ServerConfig
-	logger             logger.ContextLogger
-	kernelTx, kernelRx bool
-}
-
-func (w *KTlSServerConfig) ServerHandshake(ctx context.Context, conn net.Conn) (aTLS.Conn, error) {
-	tlsConn, err := aTLS.ServerHandshake(ctx, conn, w.ServerConfig)
-	if err != nil {
-		return nil, err
-	}
-	kConn, err := ktls.NewConn(ctx, w.logger, tlsConn, w.kernelTx, w.kernelRx)
-	if err != nil {
-		tlsConn.Close()
-		return nil, E.Cause(err, "initialize kernel TLS")
-	}
-	return kConn, nil
-}
-
-func (w *KTlSServerConfig) Clone() Config {
-	return &KTlSServerConfig{
-		w.ServerConfig.Clone().(ServerConfig),
-		w.logger,
-		w.kernelTx,
-		w.kernelRx,
-	}
-}

common/tls/reality_client.go

@@ -28,12 +28,10 @@ import (
 	"unsafe"
 
 	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/debug"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
 	"github.com/sagernet/sing/common/ntp"
 	aTLS "github.com/sagernet/sing/common/tls"
 
@@ -51,12 +49,12 @@ type RealityClientConfig struct {
 	shortID   [8]byte
 }
 
-func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewRealityClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (*RealityClientConfig, error) {
 	if options.UTLS == nil || !options.UTLS.Enabled {
 		return nil, E.New("uTLS is required by reality client")
 	}
 
-	uClient, err := NewUTLSClient(ctx, logger, serverAddress, options)
+	uClient, err := NewUTLSClient(ctx, serverAddress, options)
 	if err != nil {
 		return nil, err
 	}
@@ -76,20 +74,7 @@ func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAd
 	if decodedLen > 8 {
 		return nil, E.New("invalid short_id")
 	}
-
-	var config Config = &RealityClientConfig{ctx, uClient.(*UTLSClientConfig), publicKey, shortID}
-	if options.KernelRx || options.KernelTx {
-		if !C.IsLinux {
-			return nil, E.New("kTLS is only supported on Linux")
-		}
-		config = &KTLSClientConfig{
-			Config:   config,
-			logger:   logger,
-			kernelTx: options.KernelTx,
-			kernelRx: options.KernelRx,
-		}
-	}
-	return config, nil
+	return &RealityClientConfig{ctx, uClient.(*UTLSClientConfig), publicKey, shortID}, nil
 }
 
 func (e *RealityClientConfig) ServerName() string {
@@ -108,7 +93,7 @@ func (e *RealityClientConfig) SetNextProtos(nextProto []string) {
 	e.uClient.SetNextProtos(nextProto)
 }
 
-func (e *RealityClientConfig) STDConfig() (*STDConfig, error) {
+func (e *RealityClientConfig) Config() (*STDConfig, error) {
 	return nil, E.New("unsupported usage for reality")
 }
 

common/tls/reality_server.go

@@ -12,7 +12,6 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/common/dialer"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -29,7 +28,7 @@ type RealityServerConfig struct {
 	config *utls.RealityConfig
 }
 
-func NewRealityServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
+func NewRealityServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (*RealityServerConfig, error) {
 	var tlsConfig utls.RealityConfig
 
 	if options.ACME != nil && len(options.ACME.Domain) > 0 {
@@ -68,10 +67,7 @@ func NewRealityServer(ctx context.Context, logger log.ContextLogger, options opt
 			return nil, E.New("unknown cipher_suite: ", cipherSuite)
 		}
 	}
-	if len(options.CurvePreferences) > 0 {
-		return nil, E.New("curve preferences is unavailable in reality")
-	}
-	if len(options.Certificate) > 0 || options.CertificatePath != "" || len(options.ClientCertificatePublicKeySHA256) > 0 {
+	if len(options.Certificate) > 0 || options.CertificatePath != "" {
 		return nil, E.New("certificate is unavailable in reality")
 	}
 	if len(options.Key) > 0 || options.KeyPath != "" {
@@ -123,22 +119,7 @@ func NewRealityServer(ctx context.Context, logger log.ContextLogger, options opt
 		return handshakeDialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
 	}
 
-	if options.ECH != nil && options.ECH.Enabled {
-		return nil, E.New("Reality is conflict with ECH")
-	}
-	var config ServerConfig = &RealityServerConfig{&tlsConfig}
-	if options.KernelTx || options.KernelRx {
-		if !C.IsLinux {
-			return nil, E.New("kTLS is only supported on Linux")
-		}
-		config = &KTlSServerConfig{
-			ServerConfig: config,
-			logger:       logger,
-			kernelTx:     options.KernelTx,
-			kernelRx:     options.KernelRx,
-		}
-	}
-	return config, nil
+	return &RealityServerConfig{&tlsConfig}, nil
 }
 
 func (c *RealityServerConfig) ServerName() string {
@@ -157,7 +138,7 @@ func (c *RealityServerConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *RealityServerConfig) STDConfig() (*tls.Config, error) {
+func (c *RealityServerConfig) Config() (*tls.Config, error) {
 	return nil, E.New("unsupported usage for reality")
 }
 

common/tls/server.go

@@ -12,37 +12,14 @@ import (
 	aTLS "github.com/sagernet/sing/common/tls"
 )
 
-type ServerOptions struct {
-	Context        context.Context
-	Logger         log.ContextLogger
-	Options        option.InboundTLSOptions
-	KTLSCompatible bool
-}
-
-func NewServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
-	return NewServerWithOptions(ServerOptions{
-		Context: ctx,
-		Logger:  logger,
-		Options: options,
-	})
-}
-
-func NewServerWithOptions(options ServerOptions) (ServerConfig, error) {
-	if !options.Options.Enabled {
+func NewServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
+	if !options.Enabled {
 		return nil, nil
 	}
-	if !options.KTLSCompatible {
-		if options.Options.KernelTx {
-			options.Logger.Warn("enabling kTLS TX in current scenarios will definitely reduce performance, please checkout https://sing-box.sagernet.org/configuration/shared/tls/#kernel_tx")
-		}
+	if options.Reality != nil && options.Reality.Enabled {
+		return NewRealityServer(ctx, logger, options)
 	}
-	if options.Options.KernelRx {
-		options.Logger.Warn("enabling kTLS RX will definitely reduce performance, please checkout https://sing-box.sagernet.org/configuration/shared/tls/#kernel_rx")
-	}
-	if options.Options.Reality != nil && options.Options.Reality.Enabled {
-		return NewRealityServer(options.Context, options.Logger, options.Options)
-	}
-	return NewSTDServer(options.Context, options.Logger, options.Options)
+	return NewSTDServer(ctx, logger, options)
 }
 
 func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {

common/tls/std_client.go

@@ -1,12 +1,9 @@
 package tls
 
 import (
-	"bytes"
 	"context"
-	"crypto/sha256"
 	"crypto/tls"
 	"crypto/x509"
-	"encoding/base64"
 	"net"
 	"os"
 	"strings"
@@ -14,10 +11,8 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/tlsfragment"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
 	"github.com/sagernet/sing/common/ntp"
 )
 
@@ -45,7 +40,7 @@ func (c *STDClientConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *STDClientConfig) STDConfig() (*STDConfig, error) {
+func (c *STDClientConfig) Config() (*STDConfig, error) {
 	return c.config, nil
 }
 
@@ -57,13 +52,7 @@ func (c *STDClientConfig) Client(conn net.Conn) (Conn, error) {
 }
 
 func (c *STDClientConfig) Clone() Config {
-	return &STDClientConfig{
-		ctx:                   c.ctx,
-		config:                c.config.Clone(),
-		fragment:              c.fragment,
-		fragmentFallbackDelay: c.fragmentFallbackDelay,
-		recordFragment:        c.recordFragment,
-	}
+	return &STDClientConfig{c.ctx, c.config.Clone(), c.fragment, c.fragmentFallbackDelay, c.recordFragment}
 }
 
 func (c *STDClientConfig) ECHConfigList() []byte {
@@ -74,7 +63,7 @@ func (c *STDClientConfig) SetECHConfigList(EncryptedClientHelloConfigList []byte
 	c.config.EncryptedClientHelloConfigList = EncryptedClientHelloConfigList
 }
 
-func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewSTDClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	var serverName string
 	if options.ServerName != "" {
 		serverName = options.ServerName
@@ -111,15 +100,6 @@ func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 			return err
 		}
 	}
-	if len(options.CertificatePublicKeySHA256) > 0 {
-		if len(options.Certificate) > 0 || options.CertificatePath != "" {
-			return nil, E.New("certificate_public_key_sha256 is conflict with certificate or certificate_path")
-		}
-		tlsConfig.InsecureSkipVerify = true
-		tlsConfig.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
-			return verifyPublicKeySHA256(options.CertificatePublicKeySHA256, rawCerts, tlsConfig.Time)
-		}
-	}
 	if len(options.ALPN) > 0 {
 		tlsConfig.NextProtos = options.ALPN
 	}
@@ -149,9 +129,6 @@ func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 			return nil, E.New("unknown cipher_suite: ", cipherSuite)
 		}
 	}
-	for _, curve := range options.CurvePreferences {
-		tlsConfig.CurvePreferences = append(tlsConfig.CurvePreferences, tls.CurveID(curve))
-	}
 	var certificate []byte
 	if len(options.Certificate) > 0 {
 		certificate = []byte(strings.Join(options.Certificate, "\n"))
@@ -169,72 +146,10 @@ func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 		}
 		tlsConfig.RootCAs = certPool
 	}
-	var clientCertificate []byte
-	if len(options.ClientCertificate) > 0 {
-		clientCertificate = []byte(strings.Join(options.ClientCertificate, "\n"))
-	} else if options.ClientCertificatePath != "" {
-		content, err := os.ReadFile(options.ClientCertificatePath)
-		if err != nil {
-			return nil, E.Cause(err, "read client certificate")
-		}
-		clientCertificate = content
-	}
-	var clientKey []byte
-	if len(options.ClientKey) > 0 {
-		clientKey = []byte(strings.Join(options.ClientKey, "\n"))
-	} else if options.ClientKeyPath != "" {
-		content, err := os.ReadFile(options.ClientKeyPath)
-		if err != nil {
-			return nil, E.Cause(err, "read client key")
-		}
-		clientKey = content
-	}
-	if len(clientCertificate) > 0 && len(clientKey) > 0 {
-		keyPair, err := tls.X509KeyPair(clientCertificate, clientKey)
-		if err != nil {
-			return nil, E.Cause(err, "parse client x509 key pair")
-		}
-		tlsConfig.Certificates = []tls.Certificate{keyPair}
-	} else if len(clientCertificate) > 0 || len(clientKey) > 0 {
-		return nil, E.New("client certificate and client key must be provided together")
-	}
-	var config Config = &STDClientConfig{ctx, &tlsConfig, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
+	stdConfig := &STDClientConfig{ctx, &tlsConfig, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
 	if options.ECH != nil && options.ECH.Enabled {
-		var err error
-		config, err = parseECHClientConfig(ctx, config.(ECHCapableConfig), options)
-		if err != nil {
-			return nil, err
-		}
+		return parseECHClientConfig(ctx, stdConfig, options)
+	} else {
+		return stdConfig, nil
 	}
-	if options.KernelRx || options.KernelTx {
-		if !C.IsLinux {
-			return nil, E.New("kTLS is only supported on Linux")
-		}
-		config = &KTLSClientConfig{
-			Config:   config,
-			logger:   logger,
-			kernelTx: options.KernelTx,
-			kernelRx: options.KernelRx,
-		}
-	}
-	return config, nil
-}
-
-func verifyPublicKeySHA256(knownHashValues [][]byte, rawCerts [][]byte, timeFunc func() time.Time) error {
-	leafCertificate, err := x509.ParseCertificate(rawCerts[0])
-	if err != nil {
-		return E.Cause(err, "failed to parse leaf certificate")
-	}
-
-	pubKeyBytes, err := x509.MarshalPKIXPublicKey(leafCertificate.PublicKey)
-	if err != nil {
-		return E.Cause(err, "failed to marshal public key")
-	}
-	hashValue := sha256.Sum256(pubKeyBytes)
-	for _, value := range knownHashValues {
-		if bytes.Equal(value, hashValue[:]) {
-			return nil
-		}
-	}
-	return E.New("unrecognized remote public key: ", base64.StdEncoding.EncodeToString(hashValue[:]))
 }

common/tls/std_server.go

@@ -3,7 +3,6 @@ package tls
 import (
 	"context"
 	"crypto/tls"
-	"crypto/x509"
 	"net"
 	"os"
 	"strings"
@@ -12,7 +11,6 @@ import (
 
 	"github.com/sagernet/fswatch"
 	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
@@ -23,17 +21,16 @@ import (
 var errInsecureUnused = E.New("tls: insecure unused")
 
 type STDServerConfig struct {
-	access                sync.RWMutex
-	config                *tls.Config
-	logger                log.Logger
-	acmeService           adapter.SimpleLifecycle
-	certificate           []byte
-	key                   []byte
-	certificatePath       string
-	keyPath               string
-	clientCertificatePath []string
-	echKeyPath            string
-	watcher               *fswatch.Watcher
+	access          sync.RWMutex
+	config          *tls.Config
+	logger          log.Logger
+	acmeService     adapter.SimpleLifecycle
+	certificate     []byte
+	key             []byte
+	certificatePath string
+	keyPath         string
+	echKeyPath      string
+	watcher         *fswatch.Watcher
 }
 
 func (c *STDServerConfig) ServerName() string {
@@ -72,7 +69,7 @@ func (c *STDServerConfig) SetNextProtos(nextProto []string) {
 	c.config = config
 }
 
-func (c *STDServerConfig) STDConfig() (*STDConfig, error) {
+func (c *STDServerConfig) Config() (*STDConfig, error) {
 	return c.config, nil
 }
 
@@ -113,9 +110,6 @@ func (c *STDServerConfig) startWatcher() error {
 	if c.echKeyPath != "" {
 		watchPath = append(watchPath, c.echKeyPath)
 	}
-	if len(c.clientCertificatePath) > 0 {
-		watchPath = append(watchPath, c.clientCertificatePath...)
-	}
 	if len(watchPath) == 0 {
 		return nil
 	}
@@ -164,30 +158,6 @@ func (c *STDServerConfig) certificateUpdated(path string) error {
 		c.config = config
 		c.access.Unlock()
 		c.logger.Info("reloaded TLS certificate")
-	} else if common.Contains(c.clientCertificatePath, path) {
-		clientCertificateCA := x509.NewCertPool()
-		var reloaded bool
-		for _, certPath := range c.clientCertificatePath {
-			content, err := os.ReadFile(certPath)
-			if err != nil {
-				c.logger.Error(E.Cause(err, "reload certificate from ", c.clientCertificatePath))
-				continue
-			}
-			if !clientCertificateCA.AppendCertsFromPEM(content) {
-				c.logger.Error(E.New("invalid client certificate file: ", certPath))
-				continue
-			}
-			reloaded = true
-		}
-		if !reloaded {
-			return E.New("client certificates is empty")
-		}
-		c.access.Lock()
-		config := c.config.Clone()
-		config.ClientCAs = clientCertificateCA
-		c.config = config
-		c.access.Unlock()
-		c.logger.Info("reloaded client certificates")
 	} else if path == c.echKeyPath {
 		echKey, err := os.ReadFile(c.echKeyPath)
 		if err != nil {
@@ -212,7 +182,7 @@ func (c *STDServerConfig) Close() error {
 	return nil
 }
 
-func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
+func NewSTDServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
 	if !options.Enabled {
 		return nil, nil
 	}
@@ -264,14 +234,8 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 			return nil, E.New("unknown cipher_suite: ", cipherSuite)
 		}
 	}
-	for _, curveID := range options.CurvePreferences {
-		tlsConfig.CurvePreferences = append(tlsConfig.CurvePreferences, tls.CurveID(curveID))
-	}
-	tlsConfig.ClientAuth = tls.ClientAuthType(options.ClientAuthentication)
-	var (
-		certificate []byte
-		key         []byte
-	)
+	var certificate []byte
+	var key []byte
 	if acmeService == nil {
 		if len(options.Certificate) > 0 {
 			certificate = []byte(strings.Join(options.Certificate, "\n"))
@@ -313,43 +277,6 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 			tlsConfig.Certificates = []tls.Certificate{keyPair}
 		}
 	}
-	if len(options.ClientCertificate) > 0 || len(options.ClientCertificatePath) > 0 {
-		if tlsConfig.ClientAuth == tls.NoClientCert {
-			tlsConfig.ClientAuth = tls.RequireAndVerifyClientCert
-		}
-	}
-	if tlsConfig.ClientAuth == tls.VerifyClientCertIfGiven || tlsConfig.ClientAuth == tls.RequireAndVerifyClientCert {
-		if len(options.ClientCertificate) > 0 {
-			clientCertificateCA := x509.NewCertPool()
-			if !clientCertificateCA.AppendCertsFromPEM([]byte(strings.Join(options.ClientCertificate, "\n"))) {
-				return nil, E.New("invalid client certificate strings")
-			}
-			tlsConfig.ClientCAs = clientCertificateCA
-		} else if len(options.ClientCertificatePath) > 0 {
-			clientCertificateCA := x509.NewCertPool()
-			for _, path := range options.ClientCertificatePath {
-				content, err := os.ReadFile(path)
-				if err != nil {
-					return nil, E.Cause(err, "read client certificate from ", path)
-				}
-				if !clientCertificateCA.AppendCertsFromPEM(content) {
-					return nil, E.New("invalid client certificate file: ", path)
-				}
-			}
-			tlsConfig.ClientCAs = clientCertificateCA
-		} else if len(options.ClientCertificatePublicKeySHA256) > 0 {
-			if tlsConfig.ClientAuth == tls.RequireAndVerifyClientCert {
-				tlsConfig.ClientAuth = tls.RequireAnyClientCert
-			} else if tlsConfig.ClientAuth == tls.VerifyClientCertIfGiven {
-				tlsConfig.ClientAuth = tls.RequestClientCert
-			}
-			tlsConfig.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
-				return verifyPublicKeySHA256(options.ClientCertificatePublicKeySHA256, rawCerts, tlsConfig.Time)
-			}
-		} else {
-			return nil, E.New("missing client_certificate, client_certificate_path or client_certificate_public_key_sha256 for client authentication")
-		}
-	}
 	var echKeyPath string
 	if options.ECH != nil && options.ECH.Enabled {
 		err = parseECHServerConfig(ctx, options, tlsConfig, &echKeyPath)
@@ -358,32 +285,19 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 		}
 	}
 	serverConfig := &STDServerConfig{
-		config:                tlsConfig,
-		logger:                logger,
-		acmeService:           acmeService,
-		certificate:           certificate,
-		key:                   key,
-		certificatePath:       options.CertificatePath,
-		clientCertificatePath: options.ClientCertificatePath,
-		keyPath:               options.KeyPath,
-		echKeyPath:            echKeyPath,
+		config:          tlsConfig,
+		logger:          logger,
+		acmeService:     acmeService,
+		certificate:     certificate,
+		key:             key,
+		certificatePath: options.CertificatePath,
+		keyPath:         options.KeyPath,
+		echKeyPath:      echKeyPath,
 	}
 	serverConfig.config.GetConfigForClient = func(info *tls.ClientHelloInfo) (*tls.Config, error) {
 		serverConfig.access.Lock()
 		defer serverConfig.access.Unlock()
 		return serverConfig.config, nil
 	}
-	var config ServerConfig = serverConfig
-	if options.KernelTx || options.KernelRx {
-		if !C.IsLinux {
-			return nil, E.New("kTLS is only supported on Linux")
-		}
-		config = &KTlSServerConfig{
-			ServerConfig: config,
-			logger:       logger,
-			kernelTx:     options.KernelTx,
-			kernelRx:     options.KernelRx,
-		}
-	}
-	return config, nil
+	return serverConfig, nil
 }

common/tls/utls_client.go

@@ -14,11 +14,8 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/tlsfragment"
-	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
 	"github.com/sagernet/sing/common/ntp"
 
 	utls "github.com/metacubex/utls"
@@ -53,7 +50,7 @@ func (c *UTLSClientConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
-func (c *UTLSClientConfig) STDConfig() (*STDConfig, error) {
+func (c *UTLSClientConfig) Config() (*STDConfig, error) {
 	return nil, E.New("unsupported usage for uTLS")
 }
 
@@ -142,7 +139,7 @@ func (c *utlsALPNWrapper) HandshakeContext(ctx context.Context) error {
 	return c.UConn.HandshakeContext(ctx)
 }
 
-func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewUTLSClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	var serverName string
 	if options.ServerName != "" {
 		serverName = options.ServerName
@@ -167,15 +164,6 @@ func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddre
 		}
 		tlsConfig.InsecureServerNameToVerify = serverName
 	}
-	if len(options.CertificatePublicKeySHA256) > 0 {
-		if len(options.Certificate) > 0 || options.CertificatePath != "" {
-			return nil, E.New("certificate_public_key_sha256 is conflict with certificate or certificate_path")
-		}
-		tlsConfig.InsecureSkipVerify = true
-		tlsConfig.VerifyPeerCertificate = func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
-			return verifyPublicKeySHA256(options.CertificatePublicKeySHA256, rawCerts, tlsConfig.Time)
-		}
-	}
 	if len(options.ALPN) > 0 {
 		tlsConfig.NextProtos = options.ALPN
 	}
@@ -222,61 +210,19 @@ func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddre
 		}
 		tlsConfig.RootCAs = certPool
 	}
-	var clientCertificate []byte
-	if len(options.ClientCertificate) > 0 {
-		clientCertificate = []byte(strings.Join(options.ClientCertificate, "\n"))
-	} else if options.ClientCertificatePath != "" {
-		content, err := os.ReadFile(options.ClientCertificatePath)
-		if err != nil {
-			return nil, E.Cause(err, "read client certificate")
-		}
-		clientCertificate = content
-	}
-	var clientKey []byte
-	if len(options.ClientKey) > 0 {
-		clientKey = []byte(strings.Join(options.ClientKey, "\n"))
-	} else if options.ClientKeyPath != "" {
-		content, err := os.ReadFile(options.ClientKeyPath)
-		if err != nil {
-			return nil, E.Cause(err, "read client key")
-		}
-		clientKey = content
-	}
-	if len(clientCertificate) > 0 && len(clientKey) > 0 {
-		keyPair, err := utls.X509KeyPair(clientCertificate, clientKey)
-		if err != nil {
-			return nil, E.Cause(err, "parse client x509 key pair")
-		}
-		tlsConfig.Certificates = []utls.Certificate{keyPair}
-	} else if len(clientCertificate) > 0 || len(clientKey) > 0 {
-		return nil, E.New("client certificate and client key must be provided together")
-	}
 	id, err := uTLSClientHelloID(options.UTLS.Fingerprint)
 	if err != nil {
 		return nil, err
 	}
-	var config Config = &UTLSClientConfig{ctx, &tlsConfig, id, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
+	uConfig := &UTLSClientConfig{ctx, &tlsConfig, id, options.Fragment, time.Duration(options.FragmentFallbackDelay), options.RecordFragment}
 	if options.ECH != nil && options.ECH.Enabled {
 		if options.Reality != nil && options.Reality.Enabled {
 			return nil, E.New("Reality is conflict with ECH")
 		}
-		config, err = parseECHClientConfig(ctx, config.(ECHCapableConfig), options)
-		if err != nil {
-			return nil, err
-		}
+		return parseECHClientConfig(ctx, uConfig, options)
+	} else {
+		return uConfig, nil
 	}
-	if (options.KernelRx || options.KernelTx) && !common.PtrValueOrDefault(options.Reality).Enabled {
-		if !C.IsLinux {
-			return nil, E.New("kTLS is only supported on Linux")
-		}
-		config = &KTLSClientConfig{
-			Config:   config,
-			logger:   logger,
-			kernelTx: options.KernelTx,
-			kernelRx: options.KernelRx,
-		}
-	}
-	return config, nil
 }
 
 var (

common/tls/utls_stub.go

@@ -8,14 +8,13 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
 )
 
-func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewUTLSClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	return nil, E.New(`uTLS is not included in this build, rebuild with -tags with_utls`)
 }
 
-func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewRealityClient(ctx context.Context, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	return nil, E.New(`uTLS, which is required by reality is not included in this build, rebuild with -tags with_utls`)
 }
 

common/urltest/urltest.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing/common"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/ntp"
@@ -99,7 +100,7 @@ func URLTest(ctx context.Context, link string, detour N.Dialer) (t uint16, err e
 		return
 	}
 	defer instance.Close()
-	if N.NeedHandshakeForWrite(instance) {
+	if earlyConn, isEarlyConn := common.Cast[N.EarlyConn](instance); isEarlyConn && earlyConn.NeedHandshake() {
 		start = time.Now()
 	}
 	req, err := http.NewRequest(http.MethodHead, link, nil)

constant/proxy.go

@@ -28,7 +28,6 @@ const (
 	TypeDERP         = "derp"
 	TypeResolved     = "resolved"
 	TypeSSMAPI       = "ssm-api"
-	TypeCCM          = "ccm"
 )
 
 const (

constant/rule.go

@@ -22,8 +22,7 @@ const (
 	RuleSetVersion1 = 1 + iota
 	RuleSetVersion2
 	RuleSetVersion3
-	RuleSetVersion4
-	RuleSetVersionCurrent = RuleSetVersion4
+	RuleSetVersionCurrent = RuleSetVersion3
 )
 
 const (
@@ -40,5 +39,4 @@ const (
 const (
 	RuleActionRejectMethodDefault = "default"
 	RuleActionRejectMethodDrop    = "drop"
-	RuleActionRejectMethodReply   = "reply"
 )

constant/timeout.go

@@ -3,7 +3,7 @@ package constant
 import "time"
 
 const (
-	TCPKeepAliveInitial        = 5 * time.Minute
+	TCPKeepAliveInitial        = 10 * time.Minute
 	TCPKeepAliveInterval       = 75 * time.Second
 	TCPConnectTimeout          = 5 * time.Second
 	TCPTimeout                 = 15 * time.Second

dns/client.go

@@ -353,68 +353,6 @@ func (c *Client) ClearCache() {
 	}
 }
 
-func (c *Client) LookupCache(domain string, strategy C.DomainStrategy) ([]netip.Addr, bool) {
-	if c.disableCache || c.independentCache {
-		return nil, false
-	}
-	if dns.IsFqdn(domain) {
-		domain = domain[:len(domain)-1]
-	}
-	dnsName := dns.Fqdn(domain)
-	if strategy == C.DomainStrategyIPv4Only {
-		addresses, err := c.questionCache(dns.Question{
-			Name:   dnsName,
-			Qtype:  dns.TypeA,
-			Qclass: dns.ClassINET,
-		}, nil)
-		if err != ErrNotCached {
-			return addresses, true
-		}
-	} else if strategy == C.DomainStrategyIPv6Only {
-		addresses, err := c.questionCache(dns.Question{
-			Name:   dnsName,
-			Qtype:  dns.TypeAAAA,
-			Qclass: dns.ClassINET,
-		}, nil)
-		if err != ErrNotCached {
-			return addresses, true
-		}
-	} else {
-		response4, _ := c.loadResponse(dns.Question{
-			Name:   dnsName,
-			Qtype:  dns.TypeA,
-			Qclass: dns.ClassINET,
-		}, nil)
-		if response4 == nil {
-			return nil, false
-		}
-		response6, _ := c.loadResponse(dns.Question{
-			Name:   dnsName,
-			Qtype:  dns.TypeAAAA,
-			Qclass: dns.ClassINET,
-		}, nil)
-		if response6 == nil {
-			return nil, false
-		}
-		return sortAddresses(MessageToAddresses(response4), MessageToAddresses(response6), strategy), true
-	}
-	return nil, false
-}
-
-func (c *Client) ExchangeCache(ctx context.Context, message *dns.Msg) (*dns.Msg, bool) {
-	if c.disableCache || c.independentCache || len(message.Question) != 1 {
-		return nil, false
-	}
-	question := message.Question[0]
-	response, ttl := c.loadResponse(question, nil)
-	if response == nil {
-		return nil, false
-	}
-	logCachedResponse(c.logger, ctx, response, ttl)
-	response.Id = message.Id
-	return response, true
-}
-
 func sortAddresses(response4 []netip.Addr, response6 []netip.Addr, strategy C.DomainStrategy) []netip.Addr {
 	if strategy == C.DomainStrategyPreferIPv6 {
 		return append(response6, response4...)

dns/router.go

@@ -214,97 +214,95 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 	}
 	r.logger.DebugContext(ctx, "exchange ", FormatQuestion(message.Question[0].String()))
 	var (
+		response  *mDNS.Msg
 		transport adapter.DNSTransport
 		err       error
 	)
-	response, cached := r.client.ExchangeCache(ctx, message)
-	if !cached {
-		var metadata *adapter.InboundContext
-		ctx, metadata = adapter.ExtendContext(ctx)
-		metadata.Destination = M.Socksaddr{}
-		metadata.QueryType = message.Question[0].Qtype
-		switch metadata.QueryType {
-		case mDNS.TypeA:
-			metadata.IPVersion = 4
-		case mDNS.TypeAAAA:
-			metadata.IPVersion = 6
-		}
-		metadata.Domain = FqdnToDomain(message.Question[0].Name)
-		if options.Transport != nil {
-			transport = options.Transport
-			if legacyTransport, isLegacy := transport.(adapter.LegacyDNSTransport); isLegacy {
-				if options.Strategy == C.DomainStrategyAsIS {
-					options.Strategy = legacyTransport.LegacyStrategy()
-				}
-				if !options.ClientSubnet.IsValid() {
-					options.ClientSubnet = legacyTransport.LegacyClientSubnet()
-				}
-			}
+	var metadata *adapter.InboundContext
+	ctx, metadata = adapter.ExtendContext(ctx)
+	metadata.Destination = M.Socksaddr{}
+	metadata.QueryType = message.Question[0].Qtype
+	switch metadata.QueryType {
+	case mDNS.TypeA:
+		metadata.IPVersion = 4
+	case mDNS.TypeAAAA:
+		metadata.IPVersion = 6
+	}
+	metadata.Domain = FqdnToDomain(message.Question[0].Name)
+	if options.Transport != nil {
+		transport = options.Transport
+		if legacyTransport, isLegacy := transport.(adapter.LegacyDNSTransport); isLegacy {
 			if options.Strategy == C.DomainStrategyAsIS {
-				options.Strategy = r.defaultDomainStrategy
+				options.Strategy = legacyTransport.LegacyStrategy()
 			}
-			response, err = r.client.Exchange(ctx, transport, message, options, nil)
-		} else {
-			var (
-				rule      adapter.DNSRule
-				ruleIndex int
-			)
-			ruleIndex = -1
-			for {
-				dnsCtx := adapter.OverrideContext(ctx)
-				dnsOptions := options
-				transport, rule, ruleIndex = r.matchDNS(ctx, true, ruleIndex, isAddressQuery(message), &dnsOptions)
-				if rule != nil {
-					switch action := rule.Action().(type) {
-					case *R.RuleActionReject:
-						switch action.Method {
-						case C.RuleActionRejectMethodDefault:
-							return &mDNS.Msg{
-								MsgHdr: mDNS.MsgHdr{
-									Id:       message.Id,
-									Rcode:    mDNS.RcodeRefused,
-									Response: true,
-								},
-								Question: []mDNS.Question{message.Question[0]},
-							}, nil
-						case C.RuleActionRejectMethodDrop:
-							return nil, tun.ErrDrop
-						}
-					case *R.RuleActionPredefined:
-						return action.Response(message), nil
-					}
-				}
-				var responseCheck func(responseAddrs []netip.Addr) bool
-				if rule != nil && rule.WithAddressLimit() {
-					responseCheck = func(responseAddrs []netip.Addr) bool {
-						metadata.DestinationAddresses = responseAddrs
-						return rule.MatchAddressLimit(metadata)
-					}
-				}
-				if dnsOptions.Strategy == C.DomainStrategyAsIS {
-					dnsOptions.Strategy = r.defaultDomainStrategy
-				}
-				response, err = r.client.Exchange(dnsCtx, transport, message, dnsOptions, responseCheck)
-				var rejected bool
-				if err != nil {
-					if errors.Is(err, ErrResponseRejectedCached) {
-						rejected = true
-						r.logger.DebugContext(ctx, E.Cause(err, "response rejected for ", FormatQuestion(message.Question[0].String())), " (cached)")
-					} else if errors.Is(err, ErrResponseRejected) {
-						rejected = true
-						r.logger.DebugContext(ctx, E.Cause(err, "response rejected for ", FormatQuestion(message.Question[0].String())))
-					} else if len(message.Question) > 0 {
-						r.logger.ErrorContext(ctx, E.Cause(err, "exchange failed for ", FormatQuestion(message.Question[0].String())))
-					} else {
-						r.logger.ErrorContext(ctx, E.Cause(err, "exchange failed for <empty query>"))
-					}
-				}
-				if responseCheck != nil && rejected {
-					continue
-				}
-				break
+			if !options.ClientSubnet.IsValid() {
+				options.ClientSubnet = legacyTransport.LegacyClientSubnet()
 			}
 		}
+		if options.Strategy == C.DomainStrategyAsIS {
+			options.Strategy = r.defaultDomainStrategy
+		}
+		response, err = r.client.Exchange(ctx, transport, message, options, nil)
+	} else {
+		var (
+			rule      adapter.DNSRule
+			ruleIndex int
+		)
+		ruleIndex = -1
+		for {
+			dnsCtx := adapter.OverrideContext(ctx)
+			dnsOptions := options
+			transport, rule, ruleIndex = r.matchDNS(ctx, true, ruleIndex, isAddressQuery(message), &dnsOptions)
+			if rule != nil {
+				switch action := rule.Action().(type) {
+				case *R.RuleActionReject:
+					switch action.Method {
+					case C.RuleActionRejectMethodDefault:
+						return &mDNS.Msg{
+							MsgHdr: mDNS.MsgHdr{
+								Id:       message.Id,
+								Rcode:    mDNS.RcodeRefused,
+								Response: true,
+							},
+							Question: []mDNS.Question{message.Question[0]},
+						}, nil
+					case C.RuleActionRejectMethodDrop:
+						return nil, tun.ErrDrop
+					}
+				case *R.RuleActionPredefined:
+					return action.Response(message), nil
+				}
+			}
+			var responseCheck func(responseAddrs []netip.Addr) bool
+			if rule != nil && rule.WithAddressLimit() {
+				responseCheck = func(responseAddrs []netip.Addr) bool {
+					metadata.DestinationAddresses = responseAddrs
+					return rule.MatchAddressLimit(metadata)
+				}
+			}
+			if dnsOptions.Strategy == C.DomainStrategyAsIS {
+				dnsOptions.Strategy = r.defaultDomainStrategy
+			}
+			response, err = r.client.Exchange(dnsCtx, transport, message, dnsOptions, responseCheck)
+			var rejected bool
+			if err != nil {
+				if errors.Is(err, ErrResponseRejectedCached) {
+					rejected = true
+					r.logger.DebugContext(ctx, E.Cause(err, "response rejected for ", FormatQuestion(message.Question[0].String())), " (cached)")
+				} else if errors.Is(err, ErrResponseRejected) {
+					rejected = true
+					r.logger.DebugContext(ctx, E.Cause(err, "response rejected for ", FormatQuestion(message.Question[0].String())))
+				} else if len(message.Question) > 0 {
+					r.logger.ErrorContext(ctx, E.Cause(err, "exchange failed for ", FormatQuestion(message.Question[0].String())))
+				} else {
+					r.logger.ErrorContext(ctx, E.Cause(err, "exchange failed for <empty query>"))
+				}
+			}
+			if responseCheck != nil && rejected {
+				continue
+			}
+			break
+		}
 	}
 	if err != nil {
 		return nil, err
@@ -327,7 +325,6 @@ func (r *Router) Exchange(ctx context.Context, message *mDNS.Msg, options adapte
 func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQueryOptions) ([]netip.Addr, error) {
 	var (
 		responseAddrs []netip.Addr
-		cached        bool
 		err           error
 	)
 	printResult := func() {
@@ -347,13 +344,6 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 			err = E.Cause(err, "lookup ", domain)
 		}
 	}
-	responseAddrs, cached = r.client.LookupCache(domain, options.Strategy)
-	if cached {
-		if len(responseAddrs) == 0 {
-			return nil, E.New("lookup ", domain, ": empty result (cached)")
-		}
-		return responseAddrs, nil
-	}
 	r.logger.DebugContext(ctx, "lookup domain ", domain)
 	ctx, metadata := adapter.ExtendContext(ctx)
 	metadata.Destination = M.Socksaddr{}

dns/transport/dhcp/dhcp.go

@@ -243,6 +243,7 @@ func (t *Transport) fetchServersResponse(iface *control.Interface, packetConn ne
 	defer buffer.Release()
 
 	for {
+		buffer.Reset()
 		_, _, err := buffer.ReadPacketFrom(packetConn)
 		if err != nil {
 			if errors.Is(err, io.ErrShortBuffer) {

dns/transport/https.go

@@ -57,7 +57,7 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	}
 	tlsOptions := common.PtrValueOrDefault(options.TLS)
 	tlsOptions.Enabled = true
-	tlsConfig, err := tls.NewClient(ctx, logger, options.Server, tlsOptions)
+	tlsConfig, err := tls.NewClient(ctx, options.Server, tlsOptions)
 	if err != nil {
 		return nil, err
 	}

dns/transport/local/local.go

@@ -1,37 +1,34 @@
-//go:build !darwin
-
 package local
 
 import (
 	"context"
+	"errors"
+	"math/rand"
+	"syscall"
+	"time"
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/dns/transport"
 	"github.com/sagernet/sing-box/dns/transport/hosts"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
 	mDNS "github.com/miekg/dns"
 )
 
-func RegisterTransport(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewTransport)
-}
-
 var _ adapter.DNSTransport = (*Transport)(nil)
 
 type Transport struct {
 	dns.TransportAdapter
-	ctx      context.Context
-	logger   logger.ContextLogger
-	hosts    *hosts.File
-	dialer   N.Dialer
-	preferGo bool
-	resolved ResolvedResolver
+	ctx    context.Context
+	hosts  *hosts.File
+	dialer N.Dialer
 }
 
 func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
@@ -42,47 +39,20 @@ func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, opt
 	return &Transport{
 		TransportAdapter: dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options),
 		ctx:              ctx,
-		logger:           logger,
 		hosts:            hosts.NewFile(hosts.DefaultPath),
 		dialer:           transportDialer,
-		preferGo:         options.PreferGo,
 	}, nil
 }
 
 func (t *Transport) Start(stage adapter.StartStage) error {
-	switch stage {
-	case adapter.StartStateInitialize:
-		if !t.preferGo {
-			if isSystemdResolvedManaged() {
-				resolvedResolver, err := NewResolvedResolver(t.ctx, t.logger)
-				if err == nil {
-					err = resolvedResolver.Start()
-					if err == nil {
-						t.resolved = resolvedResolver
-					} else {
-						t.logger.Warn(E.Cause(err, "initialize resolved resolver"))
-					}
-				}
-			}
-		}
-	}
 	return nil
 }
 
 func (t *Transport) Close() error {
-	if t.resolved != nil {
-		return t.resolved.Close()
-	}
 	return nil
 }
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	if t.resolved != nil {
-		resolverObject := t.resolved.Object()
-		if resolverObject != nil {
-			return t.resolved.Exchange(resolverObject, ctx, message)
-		}
-	}
 	question := message.Question[0]
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
 		addresses := t.hosts.Lookup(dns.FqdnToDomain(question.Name))
@@ -90,5 +60,174 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
 		}
 	}
-	return t.exchange(ctx, message, question.Name)
+	systemConfig := getSystemDNSConfig(t.ctx)
+	if systemConfig.singleRequest || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
+		return t.exchangeSingleRequest(ctx, systemConfig, message, question.Name)
+	} else {
+		return t.exchangeParallel(ctx, systemConfig, message, question.Name)
+	}
+}
+
+func (t *Transport) exchangeSingleRequest(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	var lastErr error
+	for _, fqdn := range systemConfig.nameList(domain) {
+		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
+		if err != nil {
+			lastErr = err
+			continue
+		}
+		return response, nil
+	}
+	return nil, lastErr
+}
+
+func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
+	returned := make(chan struct{})
+	defer close(returned)
+	type queryResult struct {
+		response *mDNS.Msg
+		err      error
+	}
+	results := make(chan queryResult)
+	startRacer := func(ctx context.Context, fqdn string) {
+		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
+		if err == nil {
+			if response.Rcode != mDNS.RcodeSuccess {
+				err = dns.RcodeError(response.Rcode)
+			} else if len(dns.MessageToAddresses(response)) == 0 {
+				err = dns.RcodeSuccess
+			}
+		}
+		select {
+		case results <- queryResult{response, err}:
+		case <-returned:
+		}
+	}
+	queryCtx, queryCancel := context.WithCancel(ctx)
+	defer queryCancel()
+	var nameCount int
+	for _, fqdn := range systemConfig.nameList(domain) {
+		nameCount++
+		go startRacer(queryCtx, fqdn)
+	}
+	var errors []error
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case result := <-results:
+			if result.err == nil {
+				return result.response, nil
+			}
+			errors = append(errors, result.err)
+			if len(errors) == nameCount {
+				return nil, E.Errors(errors...)
+			}
+		}
+	}
+}
+
+func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn string, message *mDNS.Msg) (*mDNS.Msg, error) {
+	serverOffset := config.serverOffset()
+	sLen := uint32(len(config.servers))
+	var lastErr error
+	for i := 0; i < config.attempts; i++ {
+		for j := uint32(0); j < sLen; j++ {
+			server := config.servers[(serverOffset+j)%sLen]
+			question := message.Question[0]
+			question.Name = fqdn
+			response, err := t.exchangeOne(ctx, M.ParseSocksaddr(server), question, config.timeout, config.useTCP, config.trustAD)
+			if err != nil {
+				lastErr = err
+				continue
+			}
+			return response, nil
+		}
+	}
+	return nil, E.Cause(lastErr, fqdn)
+}
+
+func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
+	if server.Port == 0 {
+		server.Port = 53
+	}
+	request := &mDNS.Msg{
+		MsgHdr: mDNS.MsgHdr{
+			Id:                uint16(rand.Uint32()),
+			RecursionDesired:  true,
+			AuthenticatedData: ad,
+		},
+		Question: []mDNS.Question{question},
+		Compress: true,
+	}
+	request.SetEdns0(buf.UDPBufferSize, false)
+	if !useTCP {
+		return t.exchangeUDP(ctx, server, request, timeout)
+	} else {
+		return t.exchangeTCP(ctx, server, request, timeout)
+	}
+}
+
+func (t *Transport) exchangeUDP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg, timeout time.Duration) (*mDNS.Msg, error) {
+	conn, err := t.dialer.DialContext(ctx, N.NetworkUDP, server)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
+		newDeadline := time.Now().Add(timeout)
+		if deadline.After(newDeadline) {
+			deadline = newDeadline
+		}
+		conn.SetDeadline(deadline)
+	}
+	buffer := buf.Get(buf.UDPBufferSize)
+	defer buf.Put(buffer)
+	rawMessage, err := request.PackBuffer(buffer)
+	if err != nil {
+		return nil, E.Cause(err, "pack request")
+	}
+	_, err = conn.Write(rawMessage)
+	if err != nil {
+		if errors.Is(err, syscall.EMSGSIZE) {
+			return t.exchangeTCP(ctx, server, request, timeout)
+		}
+		return nil, E.Cause(err, "write request")
+	}
+	n, err := conn.Read(buffer)
+	if err != nil {
+		if errors.Is(err, syscall.EMSGSIZE) {
+			return t.exchangeTCP(ctx, server, request, timeout)
+		}
+		return nil, E.Cause(err, "read response")
+	}
+	var response mDNS.Msg
+	err = response.Unpack(buffer[:n])
+	if err != nil {
+		return nil, E.Cause(err, "unpack response")
+	}
+	if response.Truncated {
+		return t.exchangeTCP(ctx, server, request, timeout)
+	}
+	return &response, nil
+}
+
+func (t *Transport) exchangeTCP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg, timeout time.Duration) (*mDNS.Msg, error) {
+	conn, err := t.dialer.DialContext(ctx, N.NetworkTCP, server)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+	if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
+		newDeadline := time.Now().Add(timeout)
+		if deadline.After(newDeadline) {
+			deadline = newDeadline
+		}
+		conn.SetDeadline(deadline)
+	}
+	err = transport.WriteMessage(conn, 0, request)
+	if err != nil {
+		return nil, err
+	}
+	return transport.ReadMessage(conn)
 }

dns/transport/local/local_darwin.go

@@ -1,142 +0,0 @@
-//go:build darwin
-
-package local
-
-import (
-	"context"
-	"errors"
-	"net"
-
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/dns/transport/hosts"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/service"
-
-	mDNS "github.com/miekg/dns"
-)
-
-func RegisterTransport(registry *dns.TransportRegistry) {
-	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewTransport)
-}
-
-var _ adapter.DNSTransport = (*Transport)(nil)
-
-type Transport struct {
-	dns.TransportAdapter
-	ctx           context.Context
-	logger        logger.ContextLogger
-	hosts         *hosts.File
-	dialer        N.Dialer
-	preferGo      bool
-	fallback      bool
-	dhcpTransport dhcpTransport
-	resolver      net.Resolver
-}
-
-type dhcpTransport interface {
-	adapter.DNSTransport
-	Fetch() ([]M.Socksaddr, error)
-	Exchange0(ctx context.Context, message *mDNS.Msg, servers []M.Socksaddr) (*mDNS.Msg, error)
-}
-
-func NewTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
-	transportDialer, err := dns.NewLocalDialer(ctx, options)
-	if err != nil {
-		return nil, err
-	}
-	transportAdapter := dns.NewTransportAdapterWithLocalOptions(C.DNSTypeLocal, tag, options)
-	return &Transport{
-		TransportAdapter: transportAdapter,
-		ctx:              ctx,
-		logger:           logger,
-		hosts:            hosts.NewFile(hosts.DefaultPath),
-		dialer:           transportDialer,
-		preferGo:         options.PreferGo,
-	}, nil
-}
-
-func (t *Transport) Start(stage adapter.StartStage) error {
-	if stage != adapter.StartStateStart {
-		return nil
-	}
-	inboundManager := service.FromContext[adapter.InboundManager](t.ctx)
-	for _, inbound := range inboundManager.Inbounds() {
-		if inbound.Type() == C.TypeTun {
-			t.fallback = true
-			break
-		}
-	}
-	if !C.IsIos {
-		if t.fallback {
-			t.dhcpTransport = newDHCPTransport(t.TransportAdapter, log.ContextWithOverrideLevel(t.ctx, log.LevelDebug), t.dialer, t.logger)
-			if t.dhcpTransport != nil {
-				err := t.dhcpTransport.Start(stage)
-				if err != nil {
-					return err
-				}
-			}
-		}
-	}
-	return nil
-}
-
-func (t *Transport) Close() error {
-	return common.Close(
-		t.dhcpTransport,
-	)
-}
-
-func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	question := message.Question[0]
-	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		addresses := t.hosts.Lookup(dns.FqdnToDomain(question.Name))
-		if len(addresses) > 0 {
-			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
-		}
-	}
-	if !t.fallback {
-		return t.exchange(ctx, message, question.Name)
-	}
-	if !C.IsIos {
-		if t.dhcpTransport != nil {
-			dhcpTransports, _ := t.dhcpTransport.Fetch()
-			if len(dhcpTransports) > 0 {
-				return t.dhcpTransport.Exchange0(ctx, message, dhcpTransports)
-			}
-		}
-	}
-	if t.preferGo {
-		// Assuming the user knows what they are doing, we still execute the query which will fail.
-		return t.exchange(ctx, message, question.Name)
-	}
-	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		var network string
-		if question.Qtype == mDNS.TypeA {
-			network = "ip4"
-		} else {
-			network = "ip6"
-		}
-		addresses, err := t.resolver.LookupNetIP(ctx, network, question.Name)
-		if err != nil {
-			var dnsError *net.DNSError
-			if errors.As(err, &dnsError) && dnsError.IsNotFound {
-				return nil, dns.RcodeRefused
-			}
-			return nil, err
-		}
-		return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
-	}
-	if C.IsIos {
-		return nil, E.New("only A and AAAA queries are supported on iOS and tvOS when using NetworkExtension.")
-	} else {
-		return nil, E.New("only A and AAAA queries are supported on macOS when using NetworkExtension and DHCP unavailable.")
-	}
-}

dns/transport/local/local_darwin_dhcp.go

@@ -1,16 +0,0 @@
-//go:build darwin && with_dhcp
-
-package local
-
-import (
-	"context"
-
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/dns/transport/dhcp"
-	"github.com/sagernet/sing-box/log"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func newDHCPTransport(transportAdapter dns.TransportAdapter, ctx context.Context, dialer N.Dialer, logger log.ContextLogger) dhcpTransport {
-	return dhcp.NewRawTransport(transportAdapter, ctx, dialer, logger)
-}

dns/transport/local/local_darwin_nodhcp.go

@@ -1,15 +0,0 @@
-//go:build darwin && !with_dhcp
-
-package local
-
-import (
-	"context"
-
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/log"
-	N "github.com/sagernet/sing/common/network"
-)
-
-func newDHCPTransport(transportAdapter dns.TransportAdapter, ctx context.Context, dialer N.Dialer, logger log.ContextLogger) dhcpTransport {
-	return nil
-}

dns/transport/local/local_fallback.go

@@ -0,0 +1,204 @@
+package local
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/dns"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/service"
+
+	mDNS "github.com/miekg/dns"
+)
+
+func RegisterTransport(registry *dns.TransportRegistry) {
+	dns.RegisterTransport[option.LocalDNSServerOptions](registry, C.DNSTypeLocal, NewFallbackTransport)
+}
+
+type FallbackTransport struct {
+	adapter.DNSTransport
+	ctx      context.Context
+	fallback bool
+	resolver net.Resolver
+}
+
+func NewFallbackTransport(ctx context.Context, logger log.ContextLogger, tag string, options option.LocalDNSServerOptions) (adapter.DNSTransport, error) {
+	transport, err := NewTransport(ctx, logger, tag, options)
+	if err != nil {
+		return nil, err
+	}
+	return &FallbackTransport{
+		DNSTransport: transport,
+		ctx:          ctx,
+	}, nil
+}
+
+func (f *FallbackTransport) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
+	platformInterface := service.FromContext[platform.Interface](f.ctx)
+	if platformInterface == nil {
+		return nil
+	}
+	inboundManager := service.FromContext[adapter.InboundManager](f.ctx)
+	for _, inbound := range inboundManager.Inbounds() {
+		if inbound.Type() == C.TypeTun {
+			// platform tun hijacks DNS, so we can only use cgo resolver here
+			f.fallback = true
+			break
+		}
+	}
+	return nil
+}
+
+func (f *FallbackTransport) Close() error {
+	return nil
+}
+
+func (f *FallbackTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	if !f.fallback {
+		return f.DNSTransport.Exchange(ctx, message)
+	}
+	question := message.Question[0]
+	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
+		var network string
+		if question.Qtype == mDNS.TypeA {
+			network = "ip4"
+		} else {
+			network = "ip6"
+		}
+		addresses, err := f.resolver.LookupNetIP(ctx, network, question.Name)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
+	} else if question.Qtype == mDNS.TypeNS {
+		records, err := f.resolver.LookupNS(ctx, question.Name)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		response := &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+		}
+		for _, record := range records {
+			response.Answer = append(response.Answer, &mDNS.NS{
+				Hdr: mDNS.RR_Header{
+					Name:   question.Name,
+					Rrtype: mDNS.TypeNS,
+					Class:  mDNS.ClassINET,
+					Ttl:    C.DefaultDNSTTL,
+				},
+				Ns: record.Host,
+			})
+		}
+		return response, nil
+	} else if question.Qtype == mDNS.TypeCNAME {
+		cname, err := f.resolver.LookupCNAME(ctx, question.Name)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+			Answer: []mDNS.RR{
+				&mDNS.CNAME{
+					Hdr: mDNS.RR_Header{
+						Name:   question.Name,
+						Rrtype: mDNS.TypeCNAME,
+						Class:  mDNS.ClassINET,
+						Ttl:    C.DefaultDNSTTL,
+					},
+					Target: cname,
+				},
+			},
+		}, nil
+	} else if question.Qtype == mDNS.TypeTXT {
+		records, err := f.resolver.LookupTXT(ctx, question.Name)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		return &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+			Answer: []mDNS.RR{
+				&mDNS.TXT{
+					Hdr: mDNS.RR_Header{
+						Name:   question.Name,
+						Rrtype: mDNS.TypeCNAME,
+						Class:  mDNS.ClassINET,
+						Ttl:    C.DefaultDNSTTL,
+					},
+					Txt: records,
+				},
+			},
+		}, nil
+	} else if question.Qtype == mDNS.TypeMX {
+		records, err := f.resolver.LookupMX(ctx, question.Name)
+		if err != nil {
+			var dnsError *net.DNSError
+			if errors.As(err, &dnsError) && dnsError.IsNotFound {
+				return nil, dns.RcodeRefused
+			}
+			return nil, err
+		}
+		response := &mDNS.Msg{
+			MsgHdr: mDNS.MsgHdr{
+				Id:       message.Id,
+				Rcode:    mDNS.RcodeSuccess,
+				Response: true,
+			},
+			Question: []mDNS.Question{question},
+		}
+		for _, record := range records {
+			response.Answer = append(response.Answer, &mDNS.MX{
+				Hdr: mDNS.RR_Header{
+					Name:   question.Name,
+					Rrtype: mDNS.TypeA,
+					Class:  mDNS.ClassINET,
+					Ttl:    C.DefaultDNSTTL,
+				},
+				Preference: record.Pref,
+				Mx:         record.Host,
+			})
+		}
+		return response, nil
+	} else {
+		return nil, E.New("only A, AAAA, NS, CNAME, TXT, MX queries are supported on current platform when using TUN, please switch to a fixed DNS server.")
+	}
+}

dns/transport/local/local_resolved.go

@@ -1,14 +0,0 @@
-package local
-
-import (
-	"context"
-
-	mDNS "github.com/miekg/dns"
-)
-
-type ResolvedResolver interface {
-	Start() error
-	Close() error
-	Object() any
-	Exchange(object any, ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error)
-}

dns/transport/local/local_resolved_linux.go

@@ -1,248 +0,0 @@
-package local
-
-import (
-	"bufio"
-	"context"
-	"errors"
-	"os"
-	"strings"
-	"sync"
-	"sync/atomic"
-
-	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/service/resolved"
-	"github.com/sagernet/sing-tun"
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/control"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/logger"
-	"github.com/sagernet/sing/common/x/list"
-	"github.com/sagernet/sing/service"
-
-	"github.com/godbus/dbus/v5"
-	mDNS "github.com/miekg/dns"
-)
-
-func isSystemdResolvedManaged() bool {
-	resolvContent, err := os.Open("/etc/resolv.conf")
-	if err != nil {
-		return false
-	}
-	defer resolvContent.Close()
-	scanner := bufio.NewScanner(resolvContent)
-	for scanner.Scan() {
-		line := strings.TrimSpace(scanner.Text())
-		if line == "" || line[0] != '#' {
-			return false
-		}
-		if strings.Contains(line, "systemd-resolved") {
-			return true
-		}
-	}
-	return false
-}
-
-type DBusResolvedResolver struct {
-	ctx               context.Context
-	logger            logger.ContextLogger
-	interfaceMonitor  tun.DefaultInterfaceMonitor
-	interfaceCallback *list.Element[tun.DefaultInterfaceUpdateCallback]
-	systemBus         *dbus.Conn
-	resoledObject     atomic.Pointer[ResolvedObject]
-	closeOnce         sync.Once
-}
-
-type ResolvedObject struct {
-	dbus.BusObject
-	InterfaceIndex int32
-}
-
-func NewResolvedResolver(ctx context.Context, logger logger.ContextLogger) (ResolvedResolver, error) {
-	interfaceMonitor := service.FromContext[adapter.NetworkManager](ctx).InterfaceMonitor()
-	if interfaceMonitor == nil {
-		return nil, os.ErrInvalid
-	}
-	systemBus, err := dbus.SystemBus()
-	if err != nil {
-		return nil, err
-	}
-	return &DBusResolvedResolver{
-		ctx:              ctx,
-		logger:           logger,
-		interfaceMonitor: interfaceMonitor,
-		systemBus:        systemBus,
-	}, nil
-}
-
-func (t *DBusResolvedResolver) Start() error {
-	t.updateStatus()
-	t.interfaceCallback = t.interfaceMonitor.RegisterCallback(t.updateDefaultInterface)
-	err := t.systemBus.BusObject().AddMatchSignal(
-		"org.freedesktop.DBus",
-		"NameOwnerChanged",
-		dbus.WithMatchSender("org.freedesktop.DBus"),
-		dbus.WithMatchArg(0, "org.freedesktop.resolve1.Manager"),
-	).Err
-	if err != nil {
-		return E.Cause(err, "configure resolved restart listener")
-	}
-	go t.loopUpdateStatus()
-	return nil
-}
-
-func (t *DBusResolvedResolver) Close() error {
-	t.closeOnce.Do(func() {
-		if t.interfaceCallback != nil {
-			t.interfaceMonitor.UnregisterCallback(t.interfaceCallback)
-		}
-		if t.systemBus != nil {
-			_ = t.systemBus.Close()
-		}
-	})
-	return nil
-}
-
-func (t *DBusResolvedResolver) Object() any {
-	return common.PtrOrNil(t.resoledObject.Load())
-}
-
-func (t *DBusResolvedResolver) Exchange(object any, ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
-	question := message.Question[0]
-	resolvedObject := object.(*ResolvedObject)
-	call := resolvedObject.CallWithContext(
-		ctx,
-		"org.freedesktop.resolve1.Manager.ResolveRecord",
-		0,
-		resolvedObject.InterfaceIndex,
-		question.Name,
-		question.Qclass,
-		question.Qtype,
-		uint64(0),
-	)
-	if call.Err != nil {
-		var dbusError dbus.Error
-		if errors.As(call.Err, &dbusError) && dbusError.Name == "org.freedesktop.resolve1.NoNameServers" {
-			t.updateStatus()
-		}
-		return nil, E.Cause(call.Err, " resolve record via resolved")
-	}
-	var (
-		records  []resolved.ResourceRecord
-		outflags uint64
-	)
-	err := call.Store(&records, &outflags)
-	if err != nil {
-		return nil, err
-	}
-	response := &mDNS.Msg{
-		MsgHdr: mDNS.MsgHdr{
-			Id:                 message.Id,
-			Response:           true,
-			Authoritative:      true,
-			RecursionDesired:   true,
-			RecursionAvailable: true,
-			Rcode:              mDNS.RcodeSuccess,
-		},
-		Question: []mDNS.Question{question},
-	}
-	for _, record := range records {
-		var rr mDNS.RR
-		rr, _, err = mDNS.UnpackRR(record.Data, 0)
-		if err != nil {
-			return nil, E.Cause(err, "unpack resource record")
-		}
-		response.Answer = append(response.Answer, rr)
-	}
-	return response, nil
-}
-
-func (t *DBusResolvedResolver) loopUpdateStatus() {
-	signalChan := make(chan *dbus.Signal, 1)
-	t.systemBus.Signal(signalChan)
-	for signal := range signalChan {
-		var restarted bool
-		if signal.Name == "org.freedesktop.DBus.NameOwnerChanged" {
-			if len(signal.Body) != 3 || signal.Body[2].(string) == "" {
-				continue
-			} else {
-				restarted = true
-			}
-		}
-		if restarted {
-			t.updateStatus()
-		}
-	}
-}
-
-func (t *DBusResolvedResolver) updateStatus() {
-	dbusObject, err := t.checkResolved(context.Background())
-	oldValue := t.resoledObject.Swap(dbusObject)
-	if err != nil {
-		var dbusErr dbus.Error
-		if !errors.As(err, &dbusErr) || dbusErr.Name != "org.freedesktop.DBus.Error.NameHasNoOwnerCould" {
-			t.logger.Debug(E.Cause(err, "systemd-resolved service unavailable"))
-		}
-		if oldValue != nil {
-			t.logger.Debug("systemd-resolved service is gone")
-		}
-		return
-	} else if oldValue == nil {
-		t.logger.Debug("using systemd-resolved service as resolver")
-	}
-}
-
-func (t *DBusResolvedResolver) checkResolved(ctx context.Context) (*ResolvedObject, error) {
-	dbusObject := t.systemBus.Object("org.freedesktop.resolve1", "/org/freedesktop/resolve1")
-	err := dbusObject.Call("org.freedesktop.DBus.Peer.Ping", 0).Err
-	if err != nil {
-		return nil, err
-	}
-	defaultInterface := t.interfaceMonitor.DefaultInterface()
-	if defaultInterface == nil {
-		return nil, E.New("missing default interface")
-	}
-	call := dbusObject.(*dbus.Object).CallWithContext(
-		ctx,
-		"org.freedesktop.resolve1.Manager.GetLink",
-		0,
-		int32(defaultInterface.Index),
-	)
-	if call.Err != nil {
-		return nil, call.Err
-	}
-	var linkPath dbus.ObjectPath
-	err = call.Store(&linkPath)
-	if err != nil {
-		return nil, err
-	}
-	linkObject := t.systemBus.Object("org.freedesktop.resolve1", linkPath)
-	if linkObject == nil {
-		return nil, E.New("missing link object for default interface")
-	}
-	dnsProp, err := linkObject.GetProperty("org.freedesktop.resolve1.Link.DNS")
-	if err != nil {
-		return nil, err
-	}
-	var linkDNS []resolved.LinkDNS
-	err = dnsProp.Store(&linkDNS)
-	if err != nil {
-		return nil, err
-	}
-	if len(linkDNS) == 0 {
-		for _, inbound := range service.FromContext[adapter.InboundManager](t.ctx).Inbounds() {
-			if inbound.Type() == C.TypeTun {
-				return nil, E.New("No appropriate name servers or networks for name found")
-			}
-		}
-		return nil, E.New("link has no DNS servers configured")
-	}
-	return &ResolvedObject{
-		BusObject:      dbusObject,
-		InterfaceIndex: int32(defaultInterface.Index),
-	}, nil
-}
-
-func (t *DBusResolvedResolver) updateDefaultInterface(defaultInterface *control.Interface, flags int) {
-	t.updateStatus()
-}

dns/transport/local/local_resolved_stub.go

@@ -1,18 +0,0 @@
-//go:build !linux
-
-package local
-
-import (
-	"context"
-	"os"
-
-	"github.com/sagernet/sing/common/logger"
-)
-
-func isSystemdResolvedManaged() bool {
-	return false
-}
-
-func NewResolvedResolver(ctx context.Context, logger logger.ContextLogger) (ResolvedResolver, error) {
-	return nil, os.ErrInvalid
-}

dns/transport/local/local_shared.go

@@ -1,191 +0,0 @@
-package local
-
-import (
-	"context"
-	"errors"
-	"math/rand"
-	"syscall"
-	"time"
-
-	"github.com/sagernet/sing-box/dns"
-	"github.com/sagernet/sing-box/dns/transport"
-	"github.com/sagernet/sing/common/buf"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-
-	mDNS "github.com/miekg/dns"
-)
-
-func (t *Transport) exchange(ctx context.Context, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
-	systemConfig := getSystemDNSConfig(t.ctx)
-	if systemConfig.singleRequest || !(message.Question[0].Qtype == mDNS.TypeA || message.Question[0].Qtype == mDNS.TypeAAAA) {
-		return t.exchangeSingleRequest(ctx, systemConfig, message, domain)
-	} else {
-		return t.exchangeParallel(ctx, systemConfig, message, domain)
-	}
-}
-
-func (t *Transport) exchangeSingleRequest(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
-	var lastErr error
-	for _, fqdn := range systemConfig.nameList(domain) {
-		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
-		if err != nil {
-			lastErr = err
-			continue
-		}
-		return response, nil
-	}
-	return nil, lastErr
-}
-
-func (t *Transport) exchangeParallel(ctx context.Context, systemConfig *dnsConfig, message *mDNS.Msg, domain string) (*mDNS.Msg, error) {
-	returned := make(chan struct{})
-	defer close(returned)
-	type queryResult struct {
-		response *mDNS.Msg
-		err      error
-	}
-	results := make(chan queryResult)
-	startRacer := func(ctx context.Context, fqdn string) {
-		response, err := t.tryOneName(ctx, systemConfig, fqdn, message)
-		if err == nil {
-			if response.Rcode != mDNS.RcodeSuccess {
-				err = dns.RcodeError(response.Rcode)
-			} else if len(dns.MessageToAddresses(response)) == 0 {
-				err = E.New(fqdn, ": empty result")
-			}
-		}
-		select {
-		case results <- queryResult{response, err}:
-		case <-returned:
-		}
-	}
-	queryCtx, queryCancel := context.WithCancel(ctx)
-	defer queryCancel()
-	var nameCount int
-	for _, fqdn := range systemConfig.nameList(domain) {
-		nameCount++
-		go startRacer(queryCtx, fqdn)
-	}
-	var errors []error
-	for {
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case result := <-results:
-			if result.err == nil {
-				return result.response, nil
-			}
-			errors = append(errors, result.err)
-			if len(errors) == nameCount {
-				return nil, E.Errors(errors...)
-			}
-		}
-	}
-}
-
-func (t *Transport) tryOneName(ctx context.Context, config *dnsConfig, fqdn string, message *mDNS.Msg) (*mDNS.Msg, error) {
-	serverOffset := config.serverOffset()
-	sLen := uint32(len(config.servers))
-	var lastErr error
-	for i := 0; i < config.attempts; i++ {
-		for j := uint32(0); j < sLen; j++ {
-			server := config.servers[(serverOffset+j)%sLen]
-			question := message.Question[0]
-			question.Name = fqdn
-			response, err := t.exchangeOne(ctx, M.ParseSocksaddr(server), question, config.timeout, config.useTCP, config.trustAD)
-			if err != nil {
-				lastErr = err
-				continue
-			}
-			return response, nil
-		}
-	}
-	return nil, E.Cause(lastErr, fqdn)
-}
-
-func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question, timeout time.Duration, useTCP, ad bool) (*mDNS.Msg, error) {
-	if server.Port == 0 {
-		server.Port = 53
-	}
-	request := &mDNS.Msg{
-		MsgHdr: mDNS.MsgHdr{
-			Id:                uint16(rand.Uint32()),
-			RecursionDesired:  true,
-			AuthenticatedData: ad,
-		},
-		Question: []mDNS.Question{question},
-		Compress: true,
-	}
-	request.SetEdns0(buf.UDPBufferSize, false)
-	if !useTCP {
-		return t.exchangeUDP(ctx, server, request, timeout)
-	} else {
-		return t.exchangeTCP(ctx, server, request, timeout)
-	}
-}
-
-func (t *Transport) exchangeUDP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg, timeout time.Duration) (*mDNS.Msg, error) {
-	conn, err := t.dialer.DialContext(ctx, N.NetworkUDP, server)
-	if err != nil {
-		return nil, err
-	}
-	defer conn.Close()
-	if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
-		newDeadline := time.Now().Add(timeout)
-		if deadline.After(newDeadline) {
-			deadline = newDeadline
-		}
-		conn.SetDeadline(deadline)
-	}
-	buffer := buf.Get(buf.UDPBufferSize)
-	defer buf.Put(buffer)
-	rawMessage, err := request.PackBuffer(buffer)
-	if err != nil {
-		return nil, E.Cause(err, "pack request")
-	}
-	_, err = conn.Write(rawMessage)
-	if err != nil {
-		if errors.Is(err, syscall.EMSGSIZE) {
-			return t.exchangeTCP(ctx, server, request, timeout)
-		}
-		return nil, E.Cause(err, "write request")
-	}
-	n, err := conn.Read(buffer)
-	if err != nil {
-		if errors.Is(err, syscall.EMSGSIZE) {
-			return t.exchangeTCP(ctx, server, request, timeout)
-		}
-		return nil, E.Cause(err, "read response")
-	}
-	var response mDNS.Msg
-	err = response.Unpack(buffer[:n])
-	if err != nil {
-		return nil, E.Cause(err, "unpack response")
-	}
-	if response.Truncated {
-		return t.exchangeTCP(ctx, server, request, timeout)
-	}
-	return &response, nil
-}
-
-func (t *Transport) exchangeTCP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg, timeout time.Duration) (*mDNS.Msg, error) {
-	conn, err := t.dialer.DialContext(ctx, N.NetworkTCP, server)
-	if err != nil {
-		return nil, err
-	}
-	defer conn.Close()
-	if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
-		newDeadline := time.Now().Add(timeout)
-		if deadline.After(newDeadline) {
-			deadline = newDeadline
-		}
-		conn.SetDeadline(deadline)
-	}
-	err = transport.WriteMessage(conn, 0, request)
-	if err != nil {
-		return nil, err
-	}
-	return transport.ReadMessage(conn)
-}