Initial plan

Support monitoring WIFI state on Linux through:
- NetworkManager (D-Bus)
- IWD (D-Bus)
- wpa_supplicant (control socket)
- ConnMan (D-Bus)

.github/setup_go_for_windows7.sh

@@ -1,25 +1,27 @@
 #!/usr/bin/env bash
 
-VERSION="1.23.12"
+VERSION="1.25.4"
 
 mkdir -p $HOME/go
 cd $HOME/go
 wget "https://dl.google.com/go/go${VERSION}.linux-amd64.tar.gz"
 tar -xzf "go${VERSION}.linux-amd64.tar.gz"
-mv go go_legacy
-cd go_legacy
+mv go go_win7
+cd go_win7
 
 # modify from https://github.com/restic/restic/issues/4636#issuecomment-1896455557
-# this patch file only works on golang1.23.x
-# that means after golang1.24 release it must be changed
-# see: https://github.com/MetaCubeX/go/commits/release-branch.go1.23/
+# this patch file only works on golang1.25.x
+# that means after golang1.26 release it must be changed
+# see: https://github.com/MetaCubeX/go/commits/release-branch.go1.25/
 # revert:
 # 693def151adff1af707d82d28f55dba81ceb08e1: "crypto/rand,runtime: switch RtlGenRandom for ProcessPrng"
 # 7c1157f9544922e96945196b47b95664b1e39108: "net: remove sysSocket fallback for Windows 7"
 # 48042aa09c2f878c4faa576948b07fe625c4707a: "syscall: remove Windows 7 console handle workaround"
 # a17d959debdb04cd550016a3501dd09d50cd62e7: "runtime: always use LoadLibraryEx to load system libraries"
 
-curl https://github.com/MetaCubeX/go/commit/9ac42137ef6730e8b7daca016ece831297a1d75b.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/21290de8a4c91408de7c2b5b68757b1e90af49dd.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/6a31d3fa8e47ddabc10bd97bff10d9a85f4cfb76.diff | patch --verbose -p 1
-curl https://github.com/MetaCubeX/go/commit/69e2eed6dd0f6d815ebf15797761c13f31213dd6.diff | patch --verbose -p 1
+alias curl='curl -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}"'
+
+curl https://github.com/MetaCubeX/go/commit/8cb5472d94c34b88733a81091bd328e70ee565a4.diff | patch --verbose -p 1
+curl https://github.com/MetaCubeX/go/commit/6788c4c6f9fafb56729bad6b660f7ee2272d699f.diff | patch --verbose -p 1
+curl https://github.com/MetaCubeX/go/commit/a5b2168bb836ed9d6601c626f95e56c07923f906.diff | patch --verbose -p 1
+curl https://github.com/MetaCubeX/go/commit/f56f1e23507e646c85243a71bde7b9629b2f970c.diff | patch --verbose -p 1

.github/setup_musl_cross.sh

@@ -0,0 +1,11 @@
+#!/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

@@ -0,0 +1,7 @@
+#!/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: ^1.25.1
+          go-version: ^1.25.4
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
@@ -88,15 +88,11 @@ jobs:
           - { os: linux, arch: loong64, debian: loongarch64, rpm: loongarch64, openwrt: "loongarch64_generic" }
 
           - { os: windows, arch: amd64 }
-          - { os: windows, arch: amd64, legacy_go123: true, legacy_name: "windows-7" }
+          - { os: windows, arch: amd64, legacy_win7: true, legacy_name: "windows-7" }
           - { os: windows, arch: "386" }
-          - { os: windows, arch: "386", legacy_go123: true, legacy_name: "windows-7" }
+          - { 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" }
@@ -107,32 +103,32 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup Go
-        if: ${{ ! (matrix.legacy_go123 || matrix.legacy_go124) }}
+        if: ${{ ! (matrix.legacy_win7 || matrix.legacy_go124) }}
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.1
+          go-version: ^1.25.4
       - name: Setup Go 1.24
         if: matrix.legacy_go124
         uses: actions/setup-go@v5
         with:
-          go-version: ~1.24.6
-      - name: Cache Go 1.23
-        if: matrix.legacy_go123
-        id: cache-legacy-go
+          go-version: ~1.24.10
+      - name: Cache Go for Windows 7
+        if: matrix.legacy_win7
+        id: cache-go-for-windows7
         uses: actions/cache@v4
         with:
           path: |
-            ~/go/go_legacy
-          key: go_legacy_12312
-      - name: Setup Go 1.23
-        if: matrix.legacy_go123 && steps.cache-legacy-go.outputs.cache-hit != 'true'
+            ~/go/go_win7
+          key: go_win7_1254
+      - name: Setup Go for Windows 7
+        if: matrix.legacy_win7 && steps.cache-go-for-windows7.outputs.cache-hit != 'true'
         run: |-
-          .github/setup_legacy_go.sh
-      - name: Setup Go 1.23
-        if: matrix.legacy_go123
+          .github/setup_go_for_windows7.sh
+      - name: Setup Go for Windows 7
+        if: matrix.legacy_win7
         run: |-
-          echo "PATH=$HOME/go/go_legacy/bin:$PATH" >> $GITHUB_ENV
-          echo "GOROOT=$HOME/go/go_legacy" >> $GITHUB_ENV
+          echo "PATH=$HOME/go/go_win7/bin:$PATH" >> $GITHUB_ENV
+          echo "GOROOT=$HOME/go/go_win7" >> $GITHUB_ENV
       - name: Setup Android NDK
         if: matrix.os == 'android'
         uses: nttld/setup-ndk@v1
@@ -146,7 +142,10 @@ jobs:
       - name: Set build tags
         run: |
           set -xeuo pipefail
-          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale'
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0'
+          if [[ "${{ matrix.os }}" == "android" ]]; then
+            TAGS="${TAGS},with_naive_outbound"
+          fi
           echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
         if: matrix.os != 'android'
@@ -285,6 +284,199 @@ jobs:
         with:
           name: binary-${{ 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'
@@ -300,7 +492,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.1
+          go-version: ^1.25.4
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -380,7 +572,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.1
+          go-version: ^1.25.4
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -432,7 +624,8 @@ jobs:
           SERVICE_ACCOUNT_CREDENTIALS: ${{ secrets.SERVICE_ACCOUNT_CREDENTIALS }}
   build_apple:
     name: Build Apple clients
-    runs-on: macos-15
+    runs-on: macos-26
+    if: false
     needs:
       - calculate_version
     strategy:
@@ -478,15 +671,7 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.25.1
-      - name: Setup Xcode stable
-        if: matrix.if && github.ref == 'refs/heads/main-next'
-        run: |-
-          sudo xcode-select -s /Applications/Xcode_16.4.app
-      - name: Setup Xcode beta
-        if: matrix.if && github.ref == 'refs/heads/dev-next'
-        run: |-
-          sudo xcode-select -s /Applications/Xcode_16.4.app
+          go-version: ^1.25.4
       - name: Set tag
         if: matrix.if
         run: |-
@@ -626,6 +811,8 @@ 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: ~1.24.6
+          go-version: ^1.25
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v8
         with:
-          version: latest
+          version: v2.4.0
           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: ^1.25.1
+          go-version: ^1.25.4
       - 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: ^1.25.1
+          go-version: ^1.25.4
       - 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'
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,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 }}' \
+          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
           ./cmd/sing-box
         env:
           CGO_ENABLED: "0"

.gitignore

@@ -15,4 +15,6 @@
 .DS_Store
 /config.d/
 /venv/
-
+CLAUDE.md
+AGENTS.md
+/.claude/

.golangci.yml

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

.goreleaser.fury.yaml

@@ -1,103 +0,0 @@
-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

@@ -1,213 +0,0 @@
-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

@@ -13,15 +13,13 @@ 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_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0" \
         -o /go/bin/sing-box \
         -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid= -checklinkname=0" \
         ./cmd/sing-box
 FROM --platform=$TARGETPLATFORM alpine AS dist
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"
 RUN set -ex \
-    && apk upgrade \
-    && apk add bash tzdata ca-certificates nftables \
-    && rm -rf /var/cache/apk/*
+    && apk add --no-cache --upgrade bash tzdata ca-certificates nftables
 COPY --from=builder /go/bin/sing-box /usr/local/bin/sing-box
 ENTRYPOINT ["sing-box"]

Makefile

@@ -1,6 +1,6 @@
 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
+TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale,with_ccm,badlinkname,tfogo_checklinkname0
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
@@ -17,6 +17,10 @@ build:
 	export GOTOOLCHAIN=local && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
+race:
+	export GOTOOLCHAIN=local && \
+	go build -race $(MAIN_PARAMS) $(MAIN)
+
 ci_build:
 	export GOTOOLCHAIN=local && \
 	go build $(PARAMS) $(MAIN) && \
@@ -34,7 +38,7 @@ fmt:
 	@gci write --custom-order -s standard -s "prefix(github.com/sagernet/)" -s "default" .
 
 fmt_install:
-	go install -v mvdan.cc/gofumpt@latest
+	go install -v mvdan.cc/gofumpt@v0.8.0
 	go install -v github.com/daixiang0/gci@latest
 
 lint:
@@ -45,7 +49,7 @@ lint:
 	GOOS=freebsd golangci-lint run ./...
 
 lint_install:
-	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
+	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.4.0
 
 proto:
 	@go run ./cmd/internal/protogen

README.md

@@ -1,3 +1,11 @@
+> Sponsored by [Warp](https://go.warp.dev/sing-box), built for coding with multiple AI agents
+
+<a href="https://go.warp.dev/sing-box">
+<img alt="Warp sponsorship" width="400" src="https://github.com/warpdotdev/brand-assets/raw/refs/heads/main/Github/Sponsor/Warp-Github-LG-02.png">
+</a>
+
+---
+
 # sing-box
 
 The universal proxy platform.

adapter/network.go

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

adapter/router.go

@@ -24,7 +24,6 @@ type Router interface {
 	PreMatch(metadata InboundContext, context tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error)
 	ConnectionRouterEx
 	RuleSet(tag string) (RuleSet, bool)
-	NeedWIFIState() bool
 	Rules() []Rule
 	AppendTracker(tracker ConnectionTracker)
 	ResetNetwork()

adapter/upstream.go

@@ -73,7 +73,7 @@ func NewUpstreamContextHandlerEx(
 }
 
 func (w *myUpstreamContextHandlerWrapperEx) NewConnectionEx(ctx context.Context, conn net.Conn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
-	myMetadata := ContextFrom(ctx)
+	_, myMetadata := ExtendContext(ctx)
 	if source.IsValid() {
 		myMetadata.Source = source
 	}
@@ -84,7 +84,7 @@ func (w *myUpstreamContextHandlerWrapperEx) NewConnectionEx(ctx context.Context,
 }
 
 func (w *myUpstreamContextHandlerWrapperEx) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
-	myMetadata := ContextFrom(ctx)
+	_, myMetadata := ExtendContext(ctx)
 	if source.IsValid() {
 		myMetadata.Source = source
 	}
@@ -146,7 +146,7 @@ type routeContextHandlerWrapperEx struct {
 }
 
 func (r *routeContextHandlerWrapperEx) NewConnectionEx(ctx context.Context, conn net.Conn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
-	metadata := ContextFrom(ctx)
+	_, metadata := ExtendContext(ctx)
 	if source.IsValid() {
 		metadata.Source = source
 	}
@@ -157,7 +157,7 @@ func (r *routeContextHandlerWrapperEx) NewConnectionEx(ctx context.Context, conn
 }
 
 func (r *routeContextHandlerWrapperEx) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
-	metadata := ContextFrom(ctx)
+	_, metadata := ExtendContext(ctx)
 	if source.IsValid() {
 		metadata.Source = source
 	}

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)
+	networkManager, err := route.NewNetworkManager(ctx, logFactory.NewLogger("network"), routeOptions, dnsOptions)
 	if err != nil {
 		return nil, E.Cause(err, "initialize network manager")
 	}

cmd/internal/app_store_connect/main.go

@@ -134,6 +134,7 @@ func publishTestflight(ctx context.Context) error {
 			asc.PlatformTVOS,
 		}
 	}
+	waitingForProcess := false
 	for _, platform := range platforms {
 		log.Info(string(platform), " list builds")
 		for {
@@ -145,12 +146,13 @@ func publishTestflight(ctx context.Context) error {
 				return err
 			}
 			build := builds.Data[0]
-			if common.Contains(buildIDs, build.ID) || time.Since(build.Attributes.UploadedDate.Time) > 30*time.Minute {
+			if !waitingForProcess && (common.Contains(buildIDs, build.ID) || time.Since(build.Attributes.UploadedDate.Time) > 30*time.Minute) {
 				log.Info(string(platform), " ", tag, " waiting for process")
 				time.Sleep(15 * time.Second)
 				continue
 			}
 			if *build.Attributes.ProcessingState != "VALID" {
+				waitingForProcess = true
 				log.Info(string(platform), " ", tag, " waiting for process: ", *build.Attributes.ProcessingState)
 				time.Sleep(15 * time.Second)
 				continue

cmd/internal/build_libbox/main.go

@@ -62,7 +62,7 @@ func init() {
 	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")
 
-	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack", "badlinkname", "tfogo_checklinkname0")
 	macOSTags = append(macOSTags, "with_dhcp")
 	memcTags = append(memcTags, "with_tailscale")
 	notMemcTags = append(notMemcTags, "with_low_memory")
@@ -107,10 +107,8 @@ 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...)
 	}
 

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.EarlyConnection, error) {
+			Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (*quic.Conn, error) {
 				destination := M.ParseSocksaddr(addr)
 				udpConn, dErr := dialer.DialContext(ctx, N.NetworkUDP, destination)
 				if dErr != nil {

common/badtls/raw_conn.go

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

common/badtls/raw_half_conn.go

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

common/badtls/read_wait.go

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

common/badtls/read_wait_stub.go

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

common/badtls/registry.go

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

common/badtls/registry_utls.go

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

common/badversion/version.go

@@ -5,6 +5,8 @@ import (
 	"strings"
 
 	F "github.com/sagernet/sing/common/format"
+
+	"golang.org/x/mod/semver"
 )
 
 type Version struct {
@@ -16,7 +18,19 @@ type Version struct {
 	PreReleaseVersion    int
 }
 
-func (v Version) After(anotherVersion Version) bool {
+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 {
 	if v.Major > anotherVersion.Major {
 		return true
 	} else if v.Major < anotherVersion.Major {
@@ -44,19 +58,29 @@ func (v Version) After(anotherVersion Version) bool {
 			} else if v.PreReleaseVersion < anotherVersion.PreReleaseVersion {
 				return false
 			}
-		} else if v.PreReleaseIdentifier == "rc" && anotherVersion.PreReleaseIdentifier == "beta" {
+		}
+		preReleaseIdentifier := parsePreReleaseIdentifier(v.PreReleaseIdentifier)
+		anotherPreReleaseIdentifier := parsePreReleaseIdentifier(anotherVersion.PreReleaseIdentifier)
+		if preReleaseIdentifier < anotherPreReleaseIdentifier {
 			return true
-		} 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" {
+		} else if preReleaseIdentifier > anotherPreReleaseIdentifier {
 			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)
 }
@@ -83,6 +107,10 @@ 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").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")))
+	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")))
 }

common/certificate/store.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 
 	"github.com/sagernet/fswatch"
 	"github.com/sagernet/sing-box/adapter"
@@ -21,6 +22,7 @@ import (
 var _ adapter.CertificateStore = (*Store)(nil)
 
 type Store struct {
+	access                    sync.RWMutex
 	systemPool                *x509.CertPool
 	currentPool               *x509.CertPool
 	certificate               string
@@ -115,10 +117,14 @@ func (s *Store) Close() error {
 }
 
 func (s *Store) Pool() *x509.CertPool {
+	s.access.RLock()
+	defer s.access.RUnlock()
 	return s.currentPool
 }
 
 func (s *Store) update() error {
+	s.access.Lock()
+	defer s.access.Unlock()
 	var currentPool *x509.CertPool
 	if s.systemPool == nil {
 		currentPool = x509.NewCertPool()

common/dialer/default.go

@@ -20,6 +20,8 @@ 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 (
@@ -28,8 +30,8 @@ var (
 )
 
 type DefaultDialer struct {
-	dialer4                tcpDialer
-	dialer6                tcpDialer
+	dialer4                tfo.Dialer
+	dialer6                tfo.Dialer
 	udpDialer4             net.Dialer
 	udpDialer6             net.Dialer
 	udpListener            net.ListenConfig
@@ -141,9 +143,18 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 	} else {
 		dialer.Timeout = C.TCPConnectTimeout
 	}
-	// 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))
+	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))
+	}
 	var udpFragment bool
 	if options.UDPFragment != nil {
 		udpFragment = *options.UDPFragment
@@ -177,19 +188,10 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		udpAddr6 = M.SocksaddrFrom(bindAddr, 0).String()
 	}
 	if options.TCPMultiPath {
-		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
+		dialer4.SetMultipathTCP(true)
 	}
+	tcpDialer4 := tfo.Dialer{Dialer: dialer4, DisableTFO: !options.TCPFastOpen}
+	tcpDialer6 := tfo.Dialer{Dialer: dialer6, DisableTFO: !options.TCPFastOpen}
 	return &DefaultDialer{
 		dialer4:                tcpDialer4,
 		dialer6:                tcpDialer6,
@@ -269,7 +271,7 @@ func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network strin
 	}
 	var dialer net.Dialer
 	if N.NetworkName(network) == N.NetworkTCP {
-		dialer = dialerFromTCPDialer(d.dialer4)
+		dialer = d.dialer4.Dialer
 	} else {
 		dialer = d.udpDialer4
 	}
@@ -317,9 +319,9 @@ func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 
 func (d *DefaultDialer) DialerForICMPDestination(destination netip.Addr) net.Dialer {
 	if !destination.Is6() {
-		return dialerFromTCPDialer(d.dialer6)
+		return d.dialer6.Dialer
 	} else {
-		return dialerFromTCPDialer(d.dialer4)
+		return d.dialer4.Dialer
 	}
 }
 
@@ -356,18 +358,8 @@ func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destina
 	return trackPacketConn(packetConn, nil)
 }
 
-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 (d *DefaultDialer) WireGuardControl() control.Func {
+	return d.udpListener.Control
 }
 
 func trackConn(conn net.Conn, err error) (net.Conn, error) {

common/dialer/default_go1.20.go

@@ -1,19 +0,0 @@
-//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

@@ -1,11 +0,0 @@
-//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

@@ -1,22 +0,0 @@
-//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

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

common/dialer/tfo.go

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

@@ -1,20 +0,0 @@
-//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

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

common/ktls/ktls.go

@@ -1,10 +1,12 @@
-//go:build linux && go1.25 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 
 import (
+	"bytes"
 	"context"
 	"crypto/tls"
+	"errors"
 	"io"
 	"net"
 	"os"
@@ -15,6 +17,8 @@ import (
 	"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 {
@@ -28,6 +32,7 @@ type Conn struct {
 	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) {
@@ -61,7 +66,7 @@ func NewConn(ctx context.Context, logger logger.ContextLogger, conn aTLS.Conn, t
 		for rawConn.Hand.Len() > 0 {
 			err = rawConn.HandlePostHandshakeMessage()
 			if err != nil {
-				return nil, E.Cause(err, "ktls: failed to handle post-handshake messages")
+				return nil, E.Cause(err, "handle post-handshake messages")
 			}
 		}
 	}
@@ -85,7 +90,7 @@ func (c *Conn) Upstream() any {
 	return c.Conn
 }
 
-func (c *Conn) SyscallConnForRead() syscall.Conn {
+func (c *Conn) SyscallConnForRead() syscall.RawConn {
 	if !c.kernelRx {
 		return nil
 	}
@@ -94,13 +99,35 @@ func (c *Conn) SyscallConnForRead() syscall.Conn {
 		return nil
 	}
 	c.logger.DebugContext(c.ctx, "ktls: RX splice requested")
-	return c.syscallConn
+	return c.rawSyscallConn
 }
 
-func (c *Conn) SyscallConnForWrite() syscall.Conn {
+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.syscallConn
+	return c.rawSyscallConn
 }

common/ktls/ktls_alert.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_cipher_suites_linux.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_close.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_const.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_handshake_messages.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_key_update.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_linux.go

@@ -1,4 +1,4 @@
-//go:build linux && go1.25 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 
@@ -12,11 +12,11 @@ import (
 	"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"
 
-	"github.com/blang/semver/v4"
 	"golang.org/x/sys/unix"
 )
 
@@ -55,46 +55,42 @@ var KernelSupport = sync.OnceValues(func() (*Support, error) {
 		return nil, err
 	}
 
-	kernelVersion, err := semver.Parse(strings.Trim(string(uname.Release[:]), "\x00"))
+	kernelVersion := badversion.Parse(strings.Trim(string(uname.Release[:]), "\x00"))
 	if err != nil {
 		return nil, err
 	}
-	kernelVersion.Pre = nil
-	kernelVersion.Build = nil
-
 	var support Support
-
 	switch {
-	case kernelVersion.GTE(semver.Version{Major: 6, Minor: 14}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6, Minor: 14}):
 		support.TLS_Version13_KeyUpdate = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 6, Minor: 1}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6, Minor: 1}):
 		support.TLS_ARIA_GCM = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 6}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 6}):
 		support.TLS_Version13_RX = true
 		support.TLS_RX_NOPADDING = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 5, Minor: 19}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 19}):
 		support.TLS_TX_ZEROCOPY = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 5, Minor: 16}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 16}):
 		support.TLS_SM4 = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 5, Minor: 11}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 11}):
 		support.TLS_CHACHA20_POLY1305 = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 5, Minor: 2}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 2}):
 		support.TLS_AES_128_CCM = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 5, Minor: 1}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 5, Minor: 1}):
 		support.TLS_AES_256_GCM = true
 		support.TLS_Version13 = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 4, Minor: 17}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 4, Minor: 17}):
 		support.TLS_RX = true
 		fallthrough
-	case kernelVersion.GTE(semver.Version{Major: 4, Minor: 13}):
+	case kernelVersion.GreaterThanOrEqual(badversion.Version{Major: 4, Minor: 13}):
 		support.TLS = true
 	}
 
@@ -118,7 +114,7 @@ var KernelSupport = sync.OnceValues(func() (*Support, error) {
 func Load() error {
 	support, err := KernelSupport()
 	if err != nil {
-		return err
+		return E.Cause(err, "ktls: check availability")
 	}
 	if !support.TLS || !support.TLS_Version13 {
 		return E.New("ktls: kernel does not support TLS 1.3")
@@ -132,10 +128,10 @@ func (c *Conn) setupKernel(txOffload, rxOffload bool) error {
 	}
 	support, err := KernelSupport()
 	if err != nil {
-		return err
+		return E.Cause(err, "check availability")
 	}
 	if !support.TLS || !support.TLS_Version13 {
-		return E.New("ktls: kernel does not support TLS 1.3")
+		return E.New("kernel does not support TLS 1.3")
 	}
 	c.rawConn.Out.Lock()
 	defer c.rawConn.Out.Unlock()
@@ -143,13 +139,13 @@ func (c *Conn) setupKernel(txOffload, rxOffload bool) error {
 		return syscall.SetsockoptString(int(fd), unix.SOL_TCP, unix.TCP_ULP, "tls")
 	})
 	if err != nil {
-		return E.Cause(err, "initialize kernel TLS")
+		return os.NewSyscallError("setsockopt", err)
 	}
 
 	if txOffload {
 		txCrypto := kernelCipher(support, c.rawConn.Out, *c.rawConn.CipherSuite, false)
 		if txCrypto == nil {
-			return E.New("kTLS: unsupported cipher suite")
+			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())
@@ -172,7 +168,7 @@ func (c *Conn) setupKernel(txOffload, rxOffload bool) error {
 	if rxOffload {
 		rxCrypto := kernelCipher(support, c.rawConn.In, *c.rawConn.CipherSuite, true)
 		if rxCrypto == nil {
-			return E.New("kTLS: unsupported cipher suite")
+			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())
@@ -262,14 +258,14 @@ func (c *Conn) readKernelRecord() (uint8, []byte, error) {
 	var err error
 	er := c.rawSyscallConn.Read(func(fd uintptr) bool {
 		n, err = recvmsg(int(fd), &msg, 0)
-		return err != unix.EAGAIN
+		return err != unix.EAGAIN || c.pendingRxSplice
 	})
 	if er != nil {
 		return 0, nil, er
 	}
 	switch err {
 	case nil:
-	case syscall.EINVAL:
+	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))
@@ -280,7 +276,7 @@ func (c *Conn) readKernelRecord() (uint8, []byte, error) {
 	}
 
 	if n <= 0 {
-		return 0, nil, io.EOF
+		return 0, nil, c.rawConn.In.SetErrorLocked(io.EOF)
 	}
 
 	if cmsg.Level == unix.SOL_TLS && cmsg.Type == TLS_GET_RECORD_TYPE {

common/ktls/ktls_prf.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_read.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_read_wait.go

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/ktls/ktls_stub_nolinkname.go

@@ -0,0 +1,15 @@
+//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 +1,15 @@
-//go:build !linux || !go1.25 || without_badtls
+//go:build !linux
 
 package ktls
 
 import (
 	"context"
-	"os"
 
+	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, os.ErrInvalid
+	return nil, E.New("kTLS is only supported on Linux")
 }

common/ktls/ktls_stub_oldgo.go

@@ -0,0 +1,15 @@
+//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

@@ -2,7 +2,7 @@
 // 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 && !without_badtls
+//go:build linux && go1.25 && badlinkname
 
 package ktls
 

common/listener/listener_go121.go

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

common/listener/listener_go123.go

@@ -1,16 +0,0 @@
-//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

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

common/listener/listener_nongo123.go

@@ -1,15 +0,0 @@
-//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

@@ -3,6 +3,7 @@ package listener
 import (
 	"net"
 	"net/netip"
+	"strings"
 	"syscall"
 	"time"
 
@@ -16,7 +17,7 @@ import (
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/service"
 
-	"github.com/metacubex/tfo-go"
+	"github.com/database64128/tfo-go/v2"
 )
 
 func (l *Listener) ListenTCP() (net.Listener, error) {
@@ -36,7 +37,7 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 	if l.listenOptions.ReuseAddr {
 		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
 	}
-	if l.listenOptions.TCPKeepAlive >= 0 {
+	if !l.listenOptions.DisableTCPKeepAlive {
 		keepIdle := time.Duration(l.listenOptions.TCPKeepAlive)
 		if keepIdle == 0 {
 			keepIdle = C.TCPKeepAliveInitial
@@ -45,18 +46,19 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 		if keepInterval == 0 {
 			keepInterval = C.TCPKeepAliveInterval
 		}
-		setKeepAliveConfig(&listenConfig, keepIdle, keepInterval)
+		listenConfig.KeepAliveConfig = net.KeepAliveConfig{
+			Enable:   true,
+			Idle:     keepIdle,
+			Interval: keepInterval,
+		}
 	}
 	if l.listenOptions.TCPMultiPath {
-		if !go121Available {
-			return nil, E.New("MultiPath TCP requires go1.21, please recompile your binary.")
-		}
-		setMultiPathTCP(&listenConfig)
+		listenConfig.SetMultipathTCP(true)
 	}
 	if l.tproxy {
 		listenConfig.Control = control.Append(listenConfig.Control, func(network, address string, conn syscall.RawConn) error {
 			return control.Raw(conn, func(fd uintptr) error {
-				return redir.TProxy(fd, !M.ParseSocksaddr(address).IsIPv4(), false)
+				return redir.TProxy(fd, !strings.HasSuffix(network, "4"), false)
 			})
 		})
 	}

common/listener/listener_udp.go

@@ -5,6 +5,7 @@ import (
 	"net"
 	"net/netip"
 	"os"
+	"strings"
 	"syscall"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -41,7 +42,7 @@ func (l *Listener) ListenUDP() (net.PacketConn, error) {
 	if l.tproxy {
 		listenConfig.Control = control.Append(listenConfig.Control, func(network, address string, conn syscall.RawConn) error {
 			return control.Raw(conn, func(fd uintptr) error {
-				return redir.TProxy(fd, !M.ParseSocksaddr(address).IsIPv4(), true)
+				return redir.TProxy(fd, !strings.HasSuffix(network, "4"), true)
 			})
 		})
 	}

common/settings/wifi.go

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

common/settings/wifi_linux.go

@@ -0,0 +1,46 @@
+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

@@ -0,0 +1,166 @@
+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

@@ -0,0 +1,188 @@
+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

@@ -0,0 +1,163 @@
+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

@@ -0,0 +1,225 @@
+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

@@ -0,0 +1,27 @@
+//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

@@ -0,0 +1,144 @@
+//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/tls/client.go

@@ -20,7 +20,12 @@ func NewDialerFromOptions(ctx context.Context, logger logger.ContextLogger, dial
 	if !options.Enabled {
 		return dialer, nil
 	}
-	config, err := NewClient(ctx, logger, serverAddress, options)
+	config, err := NewClientWithOptions(ClientOptions{
+		Context:       ctx,
+		Logger:        logger,
+		ServerAddress: serverAddress,
+		Options:       options,
+	})
 	if err != nil {
 		return nil, err
 	}
@@ -28,15 +33,40 @@ func NewDialerFromOptions(ctx context.Context, logger logger.ContextLogger, dial
 }
 
 func NewClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
-	if !options.Enabled {
+	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 {
 		return nil, nil
 	}
-	if options.Reality != nil && options.Reality.Enabled {
-		return NewRealityClient(ctx, logger, serverAddress, options)
-	} else if options.UTLS != nil && options.UTLS.Enabled {
-		return NewUTLSClient(ctx, logger, serverAddress, options)
+	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")
+		}
 	}
-	return NewSTDClient(ctx, logger, 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)
 }
 
 func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, error) {
@@ -89,21 +119,19 @@ func (d *defaultDialer) dialContext(ctx context.Context, destination M.Socksaddr
 	if err != nil {
 		return nil, err
 	}
-	tlsConn, err := ClientHandshake(ctx, conn, d.config)
-	if err == nil {
-		return tlsConn, nil
-	}
-	conn.Close()
-	if echRetry {
+	tlsConn, err := aTLS.ClientHandshake(ctx, conn, d.config)
+	if err != nil {
+		conn.Close()
 		var echErr *tls.ECHRejectionError
-		if errors.As(err, &echErr) && len(echErr.RetryConfigList) > 0 {
+		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 d.dialContext(ctx, destination, false)
+		return nil, err
 	}
-	return nil, err
+	return tlsConn, nil
 }
 
 func (d *defaultDialer) Upstream() any {

common/tls/ech.go

@@ -69,11 +69,7 @@ func parseECHServerConfig(ctx context.Context, options option.InboundTLSOptions,
 	} else {
 		return E.New("missing ECH keys")
 	}
-	block, rest := pem.Decode(echKey)
-	if block == nil || block.Type != "ECH KEYS" || len(rest) > 0 {
-		return E.New("invalid ECH keys pem")
-	}
-	echKeys, err := UnmarshalECHKeys(block.Bytes)
+	echKeys, err := parseECHKeys(echKey)
 	if err != nil {
 		return E.Cause(err, "parse ECH keys")
 	}
@@ -85,21 +81,29 @@ func parseECHServerConfig(ctx context.Context, options option.InboundTLSOptions,
 	return nil
 }
 
-func reloadECHKeys(echKeyPath string, tlsConfig *tls.Config) error {
-	echKey, err := os.ReadFile(echKeyPath)
+func (c *STDServerConfig) setECHServerConfig(echKey []byte) error {
+	echKeys, err := parseECHKeys(echKey)
 	if err != nil {
-		return E.Cause(err, "reload ECH keys from ", echKeyPath)
+		return err
 	}
+	c.access.Lock()
+	config := c.config.Clone()
+	config.EncryptedClientHelloKeys = echKeys
+	c.config = config
+	c.access.Unlock()
+	return nil
+}
+
+func parseECHKeys(echKey []byte) ([]tls.EncryptedClientHelloKey, error) {
 	block, _ := pem.Decode(echKey)
 	if block == nil || block.Type != "ECH KEYS" {
-		return E.New("invalid ECH keys pem")
+		return nil, E.New("invalid ECH keys pem")
 	}
 	echKeys, err := UnmarshalECHKeys(block.Bytes)
 	if err != nil {
-		return E.Cause(err, "parse ECH keys")
+		return nil, E.Cause(err, "parse ECH keys")
 	}
-	tlsConfig.EncryptedClientHelloKeys = echKeys
-	return nil
+	return echKeys, nil
 }
 
 type ECHClientConfig struct {

common/tls/ech_stub.go

@@ -1,23 +0,0 @@
-//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 reloadECHKeys(echKeyPath string, tlsConfig *tls.Config) error {
-	return E.New("ECH requires go1.24, please recompile your binary.")
-}

common/tls/ktls.go

@@ -5,6 +5,7 @@ import (
 	"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"
 )
@@ -20,7 +21,12 @@ func (w *KTLSClientConfig) ClientHandshake(ctx context.Context, conn net.Conn) (
 	if err != nil {
 		return nil, err
 	}
-	return ktls.NewConn(ctx, w.logger, tlsConn, w.kernelTx, w.kernelRx)
+	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 {
@@ -43,7 +49,12 @@ func (w *KTlSServerConfig) ServerHandshake(ctx context.Context, conn net.Conn) (
 	if err != nil {
 		return nil, err
 	}
-	return ktls.NewConn(ctx, w.logger, tlsConn, w.kernelTx, w.kernelRx)
+	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 {

common/tls/reality_client.go

@@ -28,6 +28,7 @@ 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"
@@ -50,7 +51,7 @@ type RealityClientConfig struct {
 	shortID   [8]byte
 }
 
-func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (*RealityClientConfig, error) {
+func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
 	if options.UTLS == nil || !options.UTLS.Enabled {
 		return nil, E.New("uTLS is required by reality client")
 	}
@@ -75,7 +76,20 @@ func NewRealityClient(ctx context.Context, logger logger.ContextLogger, serverAd
 	if decodedLen > 8 {
 		return nil, E.New("invalid short_id")
 	}
-	return &RealityClientConfig{ctx, uClient.(*UTLSClientConfig), publicKey, shortID}, nil
+
+	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
 }
 
 func (e *RealityClientConfig) ServerName() string {

common/tls/reality_server.go

@@ -12,6 +12,7 @@ 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"
@@ -28,7 +29,7 @@ type RealityServerConfig struct {
 	config *utls.RealityConfig
 }
 
-func NewRealityServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (*RealityServerConfig, error) {
+func NewRealityServer(ctx context.Context, logger log.ContextLogger, options option.InboundTLSOptions) (ServerConfig, error) {
 	var tlsConfig utls.RealityConfig
 
 	if options.ACME != nil && len(options.ACME.Domain) > 0 {
@@ -67,7 +68,10 @@ func NewRealityServer(ctx context.Context, logger log.Logger, options option.Inb
 			return nil, E.New("unknown cipher_suite: ", cipherSuite)
 		}
 	}
-	if len(options.Certificate) > 0 || options.CertificatePath != "" {
+	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 {
 		return nil, E.New("certificate is unavailable in reality")
 	}
 	if len(options.Key) > 0 || options.KeyPath != "" {
@@ -122,11 +126,19 @@ func NewRealityServer(ctx context.Context, logger log.Logger, options option.Inb
 	if options.ECH != nil && options.ECH.Enabled {
 		return nil, E.New("Reality is conflict with ECH")
 	}
-	if options.KernelRx || options.KernelTx {
-		return nil, E.New("Reality is conflict with kTLS")
+	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 &RealityServerConfig{&tlsConfig}, nil
+	return config, nil
 }
 
 func (c *RealityServerConfig) ServerName() string {

common/tls/server.go

@@ -12,14 +12,37 @@ 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) {
-	if !options.Enabled {
+	return NewServerWithOptions(ServerOptions{
+		Context: ctx,
+		Logger:  logger,
+		Options: options,
+	})
+}
+
+func NewServerWithOptions(options ServerOptions) (ServerConfig, error) {
+	if !options.Options.Enabled {
 		return nil, nil
 	}
-	if options.Reality != nil && options.Reality.Enabled {
-		return NewRealityServer(ctx, logger, options)
+	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")
+		}
 	}
-	return NewSTDServer(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)
 }
 
 func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {

common/tls/std_client.go

@@ -1,9 +1,12 @@
 package tls
 
 import (
+	"bytes"
 	"context"
+	"crypto/sha256"
 	"crypto/tls"
 	"crypto/x509"
+	"encoding/base64"
 	"net"
 	"os"
 	"strings"
@@ -108,6 +111,15 @@ 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
 	}
@@ -137,6 +149,9 @@ 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"))
@@ -154,6 +169,35 @@ 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}
 	if options.ECH != nil && options.ECH.Enabled {
 		var err error
@@ -175,3 +219,22 @@ func NewSTDClient(ctx context.Context, logger logger.ContextLogger, serverAddres
 	}
 	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

@@ -3,13 +3,16 @@ package tls
 import (
 	"context"
 	"crypto/tls"
+	"crypto/x509"
 	"net"
 	"os"
 	"strings"
+	"sync"
 	"time"
 
 	"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"
@@ -20,26 +23,36 @@ import (
 var errInsecureUnused = E.New("tls: insecure unused")
 
 type STDServerConfig struct {
-	config          *tls.Config
-	logger          log.Logger
-	acmeService     adapter.SimpleLifecycle
-	certificate     []byte
-	key             []byte
-	certificatePath string
-	keyPath         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
+	clientCertificatePath []string
+	echKeyPath            string
+	watcher               *fswatch.Watcher
 }
 
 func (c *STDServerConfig) ServerName() string {
+	c.access.RLock()
+	defer c.access.RUnlock()
 	return c.config.ServerName
 }
 
 func (c *STDServerConfig) SetServerName(serverName string) {
-	c.config.ServerName = serverName
+	c.access.Lock()
+	defer c.access.Unlock()
+	config := c.config.Clone()
+	config.ServerName = serverName
+	c.config = config
 }
 
 func (c *STDServerConfig) NextProtos() []string {
+	c.access.RLock()
+	defer c.access.RUnlock()
 	if c.acmeService != nil && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == ACMETLS1Protocol {
 		return c.config.NextProtos[1:]
 	} else {
@@ -48,11 +61,15 @@ func (c *STDServerConfig) NextProtos() []string {
 }
 
 func (c *STDServerConfig) SetNextProtos(nextProto []string) {
+	c.access.Lock()
+	defer c.access.Unlock()
+	config := c.config.Clone()
 	if c.acmeService != nil && len(c.config.NextProtos) > 1 && c.config.NextProtos[0] == ACMETLS1Protocol {
-		c.config.NextProtos = append(c.config.NextProtos[:1], nextProto...)
+		config.NextProtos = append(c.config.NextProtos[:1], nextProto...)
 	} else {
-		c.config.NextProtos = nextProto
+		config.NextProtos = nextProto
 	}
+	c.config = config
 }
 
 func (c *STDServerConfig) STDConfig() (*STDConfig, error) {
@@ -77,9 +94,6 @@ func (c *STDServerConfig) Start() error {
 	if c.acmeService != nil {
 		return c.acmeService.Start()
 	} else {
-		if c.certificatePath == "" && c.keyPath == "" {
-			return nil
-		}
 		err := c.startWatcher()
 		if err != nil {
 			c.logger.Warn("create fsnotify watcher: ", err)
@@ -99,6 +113,12 @@ 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
+	}
 	watcher, err := fswatch.NewWatcher(fswatch.Options{
 		Path: watchPath,
 		Callback: func(path string) {
@@ -138,10 +158,42 @@ func (c *STDServerConfig) certificateUpdated(path string) error {
 		if err != nil {
 			return E.Cause(err, "reload key pair")
 		}
-		c.config.Certificates = []tls.Certificate{keyPair}
+		c.access.Lock()
+		config := c.config.Clone()
+		config.Certificates = []tls.Certificate{keyPair}
+		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 {
-		err := reloadECHKeys(c.echKeyPath, c.config)
+		echKey, err := os.ReadFile(c.echKeyPath)
+		if err != nil {
+			return E.Cause(err, "reload ECH keys from ", c.echKeyPath)
+		}
+		err = c.setECHServerConfig(echKey)
 		if err != nil {
 			return err
 		}
@@ -212,8 +264,14 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 			return nil, E.New("unknown cipher_suite: ", cipherSuite)
 		}
 	}
-	var certificate []byte
-	var key []byte
+	for _, curveID := range options.CurvePreferences {
+		tlsConfig.CurvePreferences = append(tlsConfig.CurvePreferences, tls.CurveID(curveID))
+	}
+	tlsConfig.ClientAuth = tls.ClientAuthType(options.ClientAuthentication)
+	var (
+		certificate []byte
+		key         []byte
+	)
 	if acmeService == nil {
 		if len(options.Certificate) > 0 {
 			certificate = []byte(strings.Join(options.Certificate, "\n"))
@@ -255,6 +313,43 @@ 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)
@@ -262,17 +357,27 @@ func NewSTDServer(ctx context.Context, logger log.ContextLogger, options option.
 			return nil, err
 		}
 	}
-	var config ServerConfig = &STDServerConfig{
-		config:          tlsConfig,
-		logger:          logger,
-		acmeService:     acmeService,
-		certificate:     certificate,
-		key:             key,
-		certificatePath: options.CertificatePath,
-		keyPath:         options.KeyPath,
-		echKeyPath:      echKeyPath,
+	serverConfig := &STDServerConfig{
+		config:                tlsConfig,
+		logger:                logger,
+		acmeService:           acmeService,
+		certificate:           certificate,
+		key:                   key,
+		certificatePath:       options.CertificatePath,
+		clientCertificatePath: options.ClientCertificatePath,
+		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,

common/tls/utls_client.go

@@ -16,6 +16,7 @@ import (
 	"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"
@@ -166,6 +167,15 @@ 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
 	}
@@ -212,6 +222,35 @@ 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
@@ -226,10 +265,7 @@ func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, serverAddre
 			return nil, err
 		}
 	}
-	if options.KernelRx || options.KernelTx {
-		if options.Reality != nil && options.Reality.Enabled {
-			return nil, E.New("Reality is conflict with kTLS")
-		}
+	if (options.KernelRx || options.KernelTx) && !common.PtrValueOrDefault(options.Reality).Enabled {
 		if !C.IsLinux {
 			return nil, E.New("kTLS is only supported on Linux")
 		}

common/tls/utls_stub.go

@@ -8,13 +8,14 @@ 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, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewUTLSClient(ctx context.Context, logger logger.ContextLogger, 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, serverAddress string, options option.OutboundTLSOptions) (Config, error) {
+func NewRealityClient(ctx context.Context, logger logger.ContextLogger, 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

@@ -11,7 +11,6 @@ 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"
@@ -47,15 +46,15 @@ func (s *HistoryStorage) LoadURLTestHistory(tag string) *adapter.URLTestHistory
 func (s *HistoryStorage) DeleteURLTestHistory(tag string) {
 	s.access.Lock()
 	delete(s.delayHistory, tag)
-	s.access.Unlock()
 	s.notifyUpdated()
+	s.access.Unlock()
 }
 
 func (s *HistoryStorage) StoreURLTestHistory(tag string, history *adapter.URLTestHistory) {
 	s.access.Lock()
 	s.delayHistory[tag] = history
-	s.access.Unlock()
 	s.notifyUpdated()
+	s.access.Unlock()
 }
 
 func (s *HistoryStorage) notifyUpdated() {
@@ -69,6 +68,8 @@ func (s *HistoryStorage) notifyUpdated() {
 }
 
 func (s *HistoryStorage) Close() error {
+	s.access.Lock()
+	defer s.access.Unlock()
 	s.updateHook = nil
 	return nil
 }
@@ -98,7 +99,7 @@ func URLTest(ctx context.Context, link string, detour N.Dialer) (t uint16, err e
 		return
 	}
 	defer instance.Close()
-	if earlyConn, isEarlyConn := common.Cast[N.EarlyConn](instance); isEarlyConn && earlyConn.NeedHandshake() {
+	if N.NeedHandshakeForWrite(instance) {
 		start = time.Now()
 	}
 	req, err := http.NewRequest(http.MethodHead, link, nil)

constant/proxy.go

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

constant/timeout.go

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

dns/client.go

@@ -95,6 +95,20 @@ func (c *Client) Start() {
 	}
 }
 
+func extractNegativeTTL(response *dns.Msg) (uint32, bool) {
+	for _, record := range response.Ns {
+		if soa, isSOA := record.(*dns.SOA); isSOA {
+			soaTTL := soa.Header().Ttl
+			soaMinimum := soa.Minttl
+			if soaTTL < soaMinimum {
+				return soaTTL, true
+			}
+			return soaMinimum, true
+		}
+	}
+	return 0, false
+}
+
 func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, message *dns.Msg, options adapter.DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) (*dns.Msg, error) {
 	if len(message.Question) == 0 {
 		if c.logger != nil {
@@ -214,6 +228,7 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 			response.Answer = append(response.Answer, validResponse.Answer...)
 		}
 	}*/
+	disableCache = disableCache || (response.Rcode != dns.RcodeSuccess && response.Rcode != dns.RcodeNameError)
 	if responseChecker != nil {
 		var rejected bool
 		// TODO: add accept_any rule and support to check response instead of addresses
@@ -250,10 +265,17 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		}
 	}
 	var timeToLive uint32
-	for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
-		for _, record := range recordList {
-			if timeToLive == 0 || record.Header().Ttl > 0 && record.Header().Ttl < timeToLive {
-				timeToLive = record.Header().Ttl
+	if len(response.Answer) == 0 {
+		if soaTTL, hasSOA := extractNegativeTTL(response); hasSOA {
+			timeToLive = soaTTL
+		}
+	}
+	if timeToLive == 0 {
+		for _, recordList := range [][]dns.RR{response.Answer, response.Ns, response.Extra} {
+			for _, record := range recordList {
+				if timeToLive == 0 || record.Header().Ttl > 0 && record.Header().Ttl < timeToLive {
+					timeToLive = record.Header().Ttl
+				}
 			}
 		}
 	}
@@ -280,7 +302,7 @@ func (c *Client) Exchange(ctx context.Context, transport adapter.DNSTransport, m
 		}
 	}
 	logExchangedResponse(c.logger, ctx, response, timeToLive)
-	return response, err
+	return response, nil
 }
 
 func (c *Client) Lookup(ctx context.Context, transport adapter.DNSTransport, domain string, options adapter.DNSQueryOptions, responseChecker func(responseAddrs []netip.Addr) bool) ([]netip.Addr, error) {
@@ -363,14 +385,18 @@ func (c *Client) LookupCache(domain string, strategy C.DomainStrategy) ([]netip.
 			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 response4 != nil || response6 != nil {
-			return sortAddresses(MessageToAddresses(response4), MessageToAddresses(response6), strategy), true
+		if response6 == nil {
+			return nil, false
 		}
+		return sortAddresses(MessageToAddresses(response4), MessageToAddresses(response6), strategy), true
 	}
 	return nil, false
 }

dns/client_truncate.go

@@ -15,8 +15,7 @@ func TruncateDNSMessage(request *dns.Msg, response *dns.Msg, headroom int) (*buf
 	}
 	responseLen := response.Len()
 	if responseLen > maxLen {
-		copyResponse := *response
-		response = &copyResponse
+		response = response.Copy()
 		response.Truncate(maxLen)
 	}
 	buffer := buf.NewSize(headroom*2 + 1 + responseLen)

dns/rcode.go

@@ -5,6 +5,7 @@ import (
 )
 
 const (
+	RcodeSuccess     RcodeError = mDNS.RcodeSuccess
 	RcodeFormatError RcodeError = mDNS.RcodeFormatError
 	RcodeNameError   RcodeError = mDNS.RcodeNameError
 	RcodeRefused     RcodeError = mDNS.RcodeRefused

dns/router.go

@@ -386,12 +386,7 @@ func (r *Router) Lookup(ctx context.Context, domain string, options adapter.DNSQ
 			if rule != nil {
 				switch action := rule.Action().(type) {
 				case *R.RuleActionReject:
-					switch action.Method {
-					case C.RuleActionRejectMethodDefault:
-						return nil, nil
-					case C.RuleActionRejectMethodDrop:
-						return nil, tun.ErrDrop
-					}
+					return nil, &R.RejectedError{Cause: action.Error(ctx)}
 				case *R.RuleActionPredefined:
 					if action.Rcode != mDNS.RcodeSuccess {
 						err = RcodeError(action.Rcode)

dns/transport/dhcp/dhcp.go

@@ -2,10 +2,13 @@ package dhcp
 
 import (
 	"context"
+	"errors"
+	"io"
 	"net"
 	"runtime"
 	"strings"
 	"sync"
+	"syscall"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -195,7 +198,17 @@ func (t *Transport) fetchServers0(ctx context.Context, iface *control.Interface)
 	if runtime.GOOS == "linux" || runtime.GOOS == "android" {
 		listenAddr = "255.255.255.255:68"
 	}
-	packetConn, err := listener.ListenPacket(t.ctx, "udp4", listenAddr)
+	var (
+		packetConn net.PacketConn
+		err        error
+	)
+	for i := 0; i < 5; i++ {
+		packetConn, err = listener.ListenPacket(t.ctx, "udp4", listenAddr)
+		if err == nil || !errors.Is(err, syscall.EADDRINUSE) {
+			break
+		}
+		time.Sleep(time.Second)
+	}
 	if err != nil {
 		return err
 	}
@@ -232,6 +245,9 @@ func (t *Transport) fetchServersResponse(iface *control.Interface, packetConn ne
 	for {
 		_, _, err := buffer.ReadPacketFrom(packetConn)
 		if err != nil {
+			if errors.Is(err, io.ErrShortBuffer) {
+				continue
+			}
 			return err
 		}
 

dns/transport/dhcp/dhcp_shared.go

@@ -2,12 +2,13 @@ package dhcp
 
 import (
 	"context"
+	"errors"
 	"math/rand"
 	"strings"
-	"time"
+	"syscall"
 
-	C "github.com/sagernet/sing-box/constant"
 	"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"
@@ -43,7 +44,7 @@ func (t *Transport) exchangeParallel(ctx context.Context, servers []M.Socksaddr,
 			if response.Rcode != mDNS.RcodeSuccess {
 				err = dns.RcodeError(response.Rcode)
 			} else if len(dns.MessageToAddresses(response)) == 0 {
-				err = E.New(fqdn, ": empty result")
+				err = dns.RcodeSuccess
 			}
 		}
 		select {
@@ -83,7 +84,7 @@ func (t *Transport) tryOneName(ctx context.Context, servers []M.Socksaddr, fqdn
 			server := servers[j]
 			question := message.Question[0]
 			question.Name = fqdn
-			response, err := t.exchangeOne(ctx, server, question, C.DNSTimeout, false, true)
+			response, err := t.exchangeOne(ctx, server, question)
 			if err != nil {
 				lastErr = err
 				continue
@@ -94,62 +95,77 @@ func (t *Transport) tryOneName(ctx context.Context, servers []M.Socksaddr, fqdn
 	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) {
+func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, question mDNS.Question) (*mDNS.Msg, error) {
 	if server.Port == 0 {
 		server.Port = 53
 	}
-	var networks []string
-	if useTCP {
-		networks = []string{N.NetworkTCP}
-	} else {
-		networks = []string{N.NetworkUDP, N.NetworkTCP}
-	}
 	request := &mDNS.Msg{
 		MsgHdr: mDNS.MsgHdr{
 			Id:                uint16(rand.Uint32()),
 			RecursionDesired:  true,
-			AuthenticatedData: ad,
+			AuthenticatedData: true,
 		},
 		Question: []mDNS.Question{question},
 		Compress: true,
 	}
 	request.SetEdns0(buf.UDPBufferSize, false)
+	return t.exchangeUDP(ctx, server, request)
+}
+
+func (t *Transport) exchangeUDP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg) (*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() {
+		conn.SetDeadline(deadline)
+	}
 	buffer := buf.Get(buf.UDPBufferSize)
 	defer buf.Put(buffer)
-	for _, network := range networks {
-		ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
-		defer cancel()
-		conn, err := t.dialer.DialContext(ctx, network, server)
-		if err != nil {
-			return nil, err
-		}
-		defer conn.Close()
-		if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
-			conn.SetDeadline(deadline)
-		}
-		rawMessage, err := request.PackBuffer(buffer)
-		if err != nil {
-			return nil, E.Cause(err, "pack request")
-		}
-		_, err = conn.Write(rawMessage)
-		if err != nil {
-			return nil, E.Cause(err, "write request")
-		}
-		n, err := conn.Read(buffer)
-		if err != nil {
-			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 && network == N.NetworkUDP {
-			continue
-		}
-		return &response, nil
+	rawMessage, err := request.PackBuffer(buffer)
+	if err != nil {
+		return nil, E.Cause(err, "pack request")
 	}
-	panic("unexpected")
+	_, err = conn.Write(rawMessage)
+	if err != nil {
+		if errors.Is(err, syscall.EMSGSIZE) {
+			return t.exchangeTCP(ctx, server, request)
+		}
+		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)
+		}
+		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)
+	}
+	return &response, nil
+}
+
+func (t *Transport) exchangeTCP(ctx context.Context, server M.Socksaddr, request *mDNS.Msg) (*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() {
+		conn.SetDeadline(deadline)
+	}
+	err = transport.WriteMessage(conn, 0, request)
+	if err != nil {
+		return nil, err
+	}
+	return transport.ReadMessage(conn)
 }
 
 func (t *Transport) nameList(name string) []string {

dns/transport/https.go

@@ -8,7 +8,6 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"os"
 	"strconv"
 	"sync"
 	"time"
@@ -26,7 +25,6 @@ import (
 	"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"
 	sHTTP "github.com/sagernet/sing/protocol/http"
 
 	mDNS "github.com/miekg/dns"
@@ -48,7 +46,7 @@ type HTTPSTransport struct {
 	destination      *url.URL
 	headers          http.Header
 	transportAccess  sync.Mutex
-	transport        *http.Transport
+	transport        *HTTPSTransportWrapper
 	transportResetAt time.Time
 }
 
@@ -63,11 +61,8 @@ func NewHTTPS(ctx context.Context, logger log.ContextLogger, tag string, options
 	if err != nil {
 		return nil, err
 	}
-	if common.Error(tlsConfig.STDConfig()) == nil && !common.Contains(tlsConfig.NextProtos(), http2.NextProtoTLS) {
-		tlsConfig.SetNextProtos(append(tlsConfig.NextProtos(), http2.NextProtoTLS))
-	}
-	if !common.Contains(tlsConfig.NextProtos(), "http/1.1") {
-		tlsConfig.SetNextProtos(append(tlsConfig.NextProtos(), "http/1.1"))
+	if len(tlsConfig.NextProtos()) == 0 {
+		tlsConfig.SetNextProtos([]string{http2.NextProtoTLS, "http/1.1"})
 	}
 	headers := options.Headers.Build()
 	host := headers.Get("Host")
@@ -125,37 +120,13 @@ func NewHTTPSRaw(
 	serverAddr M.Socksaddr,
 	tlsConfig tls.Config,
 ) *HTTPSTransport {
-	var transport *http.Transport
-	if tlsConfig != nil {
-		transport = &http.Transport{
-			ForceAttemptHTTP2: true,
-			DialTLSContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-				tcpConn, hErr := dialer.DialContext(ctx, network, serverAddr)
-				if hErr != nil {
-					return nil, hErr
-				}
-				tlsConn, hErr := aTLS.ClientHandshake(ctx, tcpConn, tlsConfig)
-				if hErr != nil {
-					tcpConn.Close()
-					return nil, hErr
-				}
-				return tlsConn, nil
-			},
-		}
-	} else {
-		transport = &http.Transport{
-			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-				return dialer.DialContext(ctx, network, serverAddr)
-			},
-		}
-	}
 	return &HTTPSTransport{
 		TransportAdapter: adapter,
 		logger:           logger,
 		dialer:           dialer,
 		destination:      destination,
 		headers:          headers,
-		transport:        transport,
+		transport:        NewHTTPSTransportWrapper(tls.NewDialer(dialer, tlsConfig), serverAddr),
 	}
 }
 
@@ -178,7 +149,7 @@ func (t *HTTPSTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS
 	startAt := time.Now()
 	response, err := t.exchange(ctx, message)
 	if err != nil {
-		if errors.Is(err, os.ErrDeadlineExceeded) {
+		if errors.Is(err, context.DeadlineExceeded) {
 			t.transportAccess.Lock()
 			defer t.transportAccess.Unlock()
 			if t.transportResetAt.After(startAt) {

dns/transport/https_transport.go

@@ -0,0 +1,80 @@
+package transport
+
+import (
+	"context"
+	"errors"
+	"net"
+	"net/http"
+	"sync/atomic"
+
+	"github.com/sagernet/sing-box/common/tls"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+
+	"golang.org/x/net/http2"
+)
+
+var errFallback = E.New("fallback to HTTP/1.1")
+
+type HTTPSTransportWrapper struct {
+	http2Transport *http2.Transport
+	httpTransport  *http.Transport
+	fallback       *atomic.Bool
+}
+
+func NewHTTPSTransportWrapper(dialer tls.Dialer, serverAddr M.Socksaddr) *HTTPSTransportWrapper {
+	var fallback atomic.Bool
+	return &HTTPSTransportWrapper{
+		http2Transport: &http2.Transport{
+			DialTLSContext: func(ctx context.Context, _, _ string, _ *tls.STDConfig) (net.Conn, error) {
+				tlsConn, err := dialer.DialTLSContext(ctx, serverAddr)
+				if err != nil {
+					return nil, err
+				}
+				state := tlsConn.ConnectionState()
+				if state.NegotiatedProtocol == http2.NextProtoTLS {
+					return tlsConn, nil
+				}
+				tlsConn.Close()
+				fallback.Store(true)
+				return nil, errFallback
+			},
+		},
+		httpTransport: &http.Transport{
+			DialTLSContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
+				return dialer.DialTLSContext(ctx, serverAddr)
+			},
+		},
+		fallback: &fallback,
+	}
+}
+
+func (h *HTTPSTransportWrapper) RoundTrip(request *http.Request) (*http.Response, error) {
+	if h.fallback.Load() {
+		return h.httpTransport.RoundTrip(request)
+	} else {
+		response, err := h.http2Transport.RoundTrip(request)
+		if err != nil {
+			if errors.Is(err, errFallback) {
+				return h.httpTransport.RoundTrip(request)
+			}
+			return nil, err
+		}
+		return response, nil
+	}
+}
+
+func (h *HTTPSTransportWrapper) CloseIdleConnections() {
+	h.http2Transport.CloseIdleConnections()
+	h.httpTransport.CloseIdleConnections()
+}
+
+func (h *HTTPSTransportWrapper) Clone() *HTTPSTransportWrapper {
+	return &HTTPSTransportWrapper{
+		httpTransport: h.httpTransport,
+		http2Transport: &http2.Transport{
+			DialTLSContext: h.http2Transport.DialTLSContext,
+		},
+		fallback: h.fallback,
+	}
+}

dns/transport/local/local.go

@@ -53,13 +53,15 @@ func (t *Transport) Start(stage adapter.StartStage) error {
 	switch stage {
 	case adapter.StartStateInitialize:
 		if !t.preferGo {
-			resolvedResolver, err := NewResolvedResolver(t.ctx, t.logger)
-			if err == nil {
-				err = resolvedResolver.Start()
+			if isSystemdResolvedManaged() {
+				resolvedResolver, err := NewResolvedResolver(t.ctx, t.logger)
 				if err == nil {
-					t.resolved = resolvedResolver
-				} else {
-					t.logger.Warn(E.Cause(err, "initialize resolved resolver"))
+					err = resolvedResolver.Start()
+					if err == nil {
+						t.resolved = resolvedResolver
+					} else {
+						t.logger.Warn(E.Cause(err, "initialize resolved resolver"))
+					}
 				}
 			}
 		}
@@ -82,12 +84,11 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 		}
 	}
 	question := message.Question[0]
-	domain := dns.FqdnToDomain(question.Name)
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		addresses := t.hosts.Lookup(domain)
+		addresses := t.hosts.Lookup(dns.FqdnToDomain(question.Name))
 		if len(addresses) > 0 {
 			return dns.FixedResponse(message.Id, question, addresses, C.DefaultDNSTTL), nil
 		}
 	}
-	return t.exchange(ctx, message, domain)
+	return t.exchange(ctx, message, question.Name)
 }

dns/transport/local/local_darwin.go

@@ -96,15 +96,14 @@ func (t *Transport) Close() error {
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
 	question := message.Question[0]
-	domain := dns.FqdnToDomain(question.Name)
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
-		addresses := t.hosts.Lookup(domain)
+		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, domain)
+		return t.exchange(ctx, message, question.Name)
 	}
 	if !C.IsIos {
 		if t.dhcpTransport != nil {
@@ -116,7 +115,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 	}
 	if t.preferGo {
 		// Assuming the user knows what they are doing, we still execute the query which will fail.
-		return t.exchange(ctx, message, domain)
+		return t.exchange(ctx, message, question.Name)
 	}
 	if question.Qtype == mDNS.TypeA || question.Qtype == mDNS.TypeAAAA {
 		var network string
@@ -125,7 +124,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 		} else {
 			network = "ip6"
 		}
-		addresses, err := t.resolver.LookupNetIP(ctx, network, domain)
+		addresses, err := t.resolver.LookupNetIP(ctx, network, question.Name)
 		if err != nil {
 			var dnsError *net.DNSError
 			if errors.As(err, &dnsError) && dnsError.IsNotFound {

dns/transport/local/local_resolved_linux.go

@@ -1,9 +1,11 @@
 package local
 
 import (
+	"bufio"
 	"context"
 	"errors"
 	"os"
+	"strings"
 	"sync"
 	"sync/atomic"
 
@@ -22,6 +24,25 @@ import (
 	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
@@ -188,7 +209,7 @@ func (t *DBusResolvedResolver) checkResolved(ctx context.Context) (*ResolvedObje
 		int32(defaultInterface.Index),
 	)
 	if call.Err != nil {
-		return nil, err
+		return nil, call.Err
 	}
 	var linkPath dbus.ObjectPath
 	err = call.Store(&linkPath)
@@ -214,15 +235,12 @@ func (t *DBusResolvedResolver) checkResolved(ctx context.Context) (*ResolvedObje
 				return nil, E.New("No appropriate name servers or networks for name found")
 			}
 		}
-		return &ResolvedObject{
-			BusObject: dbusObject,
-		}, nil
-	} else {
-		return &ResolvedObject{
-			BusObject:      dbusObject,
-			InterfaceIndex: int32(defaultInterface.Index),
-		}, nil
+		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) {

dns/transport/local/local_resolved_stub.go

@@ -9,6 +9,10 @@ import (
 	"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

@@ -2,10 +2,13 @@ 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"
@@ -106,12 +109,6 @@ func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, questio
 	if server.Port == 0 {
 		server.Port = 53
 	}
-	var networks []string
-	if useTCP {
-		networks = []string{N.NetworkTCP}
-	} else {
-		networks = []string{N.NetworkUDP, N.NetworkTCP}
-	}
 	request := &mDNS.Msg{
 		MsgHdr: mDNS.MsgHdr{
 			Id:                uint16(rand.Uint32()),
@@ -122,40 +119,73 @@ func (t *Transport) exchangeOne(ctx context.Context, server M.Socksaddr, questio
 		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)
-	for _, network := range networks {
-		ctx, cancel := context.WithDeadline(ctx, time.Now().Add(timeout))
-		defer cancel()
-		conn, err := t.dialer.DialContext(ctx, network, server)
-		if err != nil {
-			return nil, err
-		}
-		defer conn.Close()
-		if deadline, loaded := ctx.Deadline(); loaded && !deadline.IsZero() {
-			conn.SetDeadline(deadline)
-		}
-		rawMessage, err := request.PackBuffer(buffer)
-		if err != nil {
-			return nil, E.Cause(err, "pack request")
-		}
-		_, err = conn.Write(rawMessage)
-		if err != nil {
-			return nil, E.Cause(err, "write request")
-		}
-		n, err := conn.Read(buffer)
-		if err != nil {
-			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 && network == N.NetworkUDP {
-			continue
-		}
-		return &response, nil
+	rawMessage, err := request.PackBuffer(buffer)
+	if err != nil {
+		return nil, E.Cause(err, "pack request")
 	}
-	panic("unexpected")
+	_, 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/quic/http3.go

@@ -102,7 +102,7 @@ func NewHTTP3(ctx context.Context, logger log.ContextLogger, tag string, options
 		destination:      &destinationURL,
 		headers:          headers,
 		transport: &http3.Transport{
-			Dial: func(ctx context.Context, addr string, tlsCfg *tls.STDConfig, cfg *quic.Config) (quic.EarlyConnection, error) {
+			Dial: func(ctx context.Context, addr string, tlsCfg *tls.STDConfig, cfg *quic.Config) (*quic.Conn, error) {
 				conn, dialErr := transportDialer.DialContext(ctx, N.NetworkUDP, serverAddr)
 				if dialErr != nil {
 					return nil, dialErr

dns/transport/quic/quic.go

@@ -38,7 +38,7 @@ type Transport struct {
 	serverAddr M.Socksaddr
 	tlsConfig  tls.Config
 	access     sync.Mutex
-	connection quic.EarlyConnection
+	connection *quic.Conn
 }
 
 func NewQUIC(ctx context.Context, logger log.ContextLogger, tag string, options option.RemoteTLSDNSServerOptions) (adapter.DNSTransport, error) {
@@ -88,7 +88,7 @@ func (t *Transport) Close() error {
 
 func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
 	var (
-		conn     quic.Connection
+		conn     *quic.Conn
 		err      error
 		response *mDNS.Msg
 	)
@@ -110,7 +110,7 @@ func (t *Transport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg,
 	return nil, err
 }
 
-func (t *Transport) openConnection() (quic.EarlyConnection, error) {
+func (t *Transport) openConnection() (*quic.Conn, error) {
 	connection := t.connection
 	if connection != nil && !common.Done(connection.Context()) {
 		return connection, nil
@@ -139,7 +139,7 @@ func (t *Transport) openConnection() (quic.EarlyConnection, error) {
 	return earlyConnection, nil
 }
 
-func (t *Transport) exchange(ctx context.Context, message *mDNS.Msg, conn quic.Connection) (*mDNS.Msg, error) {
+func (t *Transport) exchange(ctx context.Context, message *mDNS.Msg, conn *quic.Conn) (*mDNS.Msg, error) {
 	stream, err := conn.OpenStreamSync(ctx)
 	if err != nil {
 		return nil, err

docs/changelog.md

@@ -2,96 +2,153 @@
 icon: material/alert-decagram
 ---
 
-#### 1.13.0-alpha.9
+#### 1.13.0-alpha.28
 
-* Add kTLS support **1**
+* Update quic-go to v0.57.1
+* Add `disable_tcp_keep_alive`, `tcp_keep_alive` and `tcp_keep_alive_interval` options for dial fields **1**
+* Update default TCP keep-alive initial period from 10 minutes to 5 minutes
 * Fixes and improvements
 
 **1**:
 
+See [Dial Fields](/configuration/shared/dial/#tcp_keep_alive).
+
+__Unfortunately, for non-technical reasons, we are currently unable to notarize the standalone version of the macOS client:
+because system extensions require signatures to function, we have had to temporarily halt its release.__
+
+__We plan to fix the App Store release issue and launch a new standalone desktop client, but until then,
+only clients on TestFlight will be available (unless you have an Apple Developer Program and compile from source code).__
+
+#### 1.12.13
+
+* Fixes and improvements
+
+__Unfortunately, for non-technical reasons, we are currently unable to notarize the standalone version of the macOS client:
+because system extensions require signatures to function, we have had to temporarily halt its release.__
+
+__We plan to fix the App Store release issue and launch a new standalone desktop client, but until then,
+only clients on TestFlight will be available (unless you have an Apple Developer Program and compile from source code).__
+
+#### 1.12.12
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.26
+
+* Update quic-go to v0.55.0
+* Fix memory leak in hysteria2
+* Fixes and improvements
+
+#### 1.12.11
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.24
+
+* Add Claude Code Multiplexer service **1**
+* Fixes and improvements
+
+**1**:
+
+CCM (Claude Code Multiplexer) service allows you to access your local Claude Code subscription remotely through custom tokens, eliminating the need for OAuth authentication on remote clients.
+
+See [CCM](/configuration/service/ccm).
+
+#### 1.13.0-alpha.23
+
+* Fix compatibility with MPTCP **1**
+* Fixes and improvements
+
+**1**:
+
+`auto_redirect` now rejects MPTCP connections by default to fix compatibility issues,
+but you can change it to bypass the sing-box via the new `exclude_mptcp` option.
+
+See [TUN](/configuration/inbound/tun/#exclude_mptcp).
+
+#### 1.13.0-alpha.22
+
+* Update uTLS to v1.8.1 **1**
+* Fixes and improvements
+
+**1**:
+
+This update fixes an critical issue that could cause simulated Chrome fingerprints to be detected,
+see https://github.com/refraction-networking/utls/pull/375.
+
+#### 1.12.10
+
+* Update uTLS to v1.8.1 **1**
+* Fixes and improvements
+
+**1**:
+
+This update fixes an critical issue that could cause simulated Chrome fingerprints to be detected,
+see https://github.com/refraction-networking/utls/pull/375.
+
+#### 1.13.0-alpha.21
+
+* Fix missing mTLS support in client options **1**
+* Fixes and improvements
+
 See [TLS](/configuration/shared/tls/).
 
+#### 1.12.9
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.16
+
+* Add curve preferences, pinned public key SHA256 and mTLS for TLS options **1**
+* Fixes and improvements
+
+See [TLS](/configuration/shared/tls/).
+
+#### 1.13.0-alpha.15
+
+* Update quic-go to v0.54.0
+* Update gVisor to v20250811
+* Update Tailscale to v1.86.5
+* Fixes and improvements
+
+#### 1.12.8
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.11
+
+* Fixes and improvements
+
+#### 1.12.5
+
+* Fixes and improvements
+
+#### 1.13.0-alpha.10
+
+* Improve kTLS support **1**
+* Fixes and improvements
+
+**1**:
+
+kTLS is now compatible with custom TLS implementations other than uTLS.
+
 #### 1.12.4
 
 * Fixes and improvements
 
-#### 1.13.0-alpha.7
-
-* Add reject support for ICMP echo supports **1**
-* Fixes and improvements
-
-**1**:
-
-You can now reject, drop, or directly reply to ICMP echo (ping) requests using `reject` Route Action.
-
-See [Route Action](/configuration/route/rule_action/#reject).
-
-#### 1.13.0-alpha.6
-
-* Add proxy support for ICMP echo requests **1**
-* Fixes and improvements
-
-**1**:
-
-You can now match ICMP echo (ping) requests using the new `icmp` network in routing rules.
-
-Such traffic originates from `TUN`, `WireGuard`, and `Tailscale` inbounds and can be routed to `Direct`, `WireGuard`, and `Tailscale` outbounds.
-
-See [Route Rule](/configuration/route/rule/#network).
-
 #### 1.12.3
 
 * Fixes and improvements
 
-#### 1.13.0-alpha.4
-
-* Fixes and improvements
-
 #### 1.12.2
 
 * Fixes and improvements
 
-#### 1.13.0-alpha.3
-
-* Improve `local` DNS server **1**
-* Fixes and improvements
-
-**1**:
-
-On Apple platforms, Windows, and Linux (when using systemd-resolved), 
-`local` DNS server now works with Tun inbound which overrides system DNS servers.
-
-See [Local DNS Server](/configuration/dns/server/local/).
-
-#### 1.13.0-alpha.2
-
-* Add `preferred_by` rule item **1**
-* Fixes and improvements
-
-**1**:
-
-The new `preferred_by` routing rule item allows you to
-match preferred domains and addresses for specific outbounds.
-
-See [Route Rule](/configuration/route/rule/#preferred_by).
-
-#### 1.13.0-alpha.1
-
-* Add interface address rule items **1**
-* Fixes and improvements
-
-**1**:
-
-New interface address rules allow you to dynamically adjust rules based on your network environment.
-
-See [Route Rule](/configuration/route/rule/), [DNS Route Rule](/configuration/dns/rule/)
-and [Headless Rule](/configuration/rule-set/headless-rule/).
-
 #### 1.12.1
 
 * Fixes and improvements
 
-### 1.12.0
+#### 1.12.0
 
 * Refactor DNS servers **1**
 * Add domain resolver options**2**
@@ -157,7 +214,8 @@ See [Tailscale](/configuration/endpoint/tailscale/).
 
 Due to maintenance difficulties, sing-box 1.12.0 requires at least Go 1.23 to compile.
 
-For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches from [MetaCubeX/go](https://github.com/MetaCubeX/go).
+For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches
+from [MetaCubeX/go](https://github.com/MetaCubeX/go).
 
 **7**:
 
@@ -219,7 +277,8 @@ See [Tun](/configuration/inbound/tun/#loopback_address).
 
 We have significantly improved the performance of tun inbound on Apple platforms, especially in the gVisor stack.
 
-The following data was tested using [tun_bench](https://github.com/SagerNet/sing-box/blob/dev-next/cmd/internal/tun_bench/main.go) on M4 MacBook pro.
+The following data was tested
+using [tun_bench](https://github.com/SagerNet/sing-box/blob/dev-next/cmd/internal/tun_bench/main.go) on M4 MacBook pro.
 
 | Version     | Stack  | MTU   | Upload | Download |
 |-------------|--------|-------|--------|----------|
@@ -238,11 +297,11 @@ The following data was tested using [tun_bench](https://github.com/SagerNet/sing
 
 **18**:
 
-We continue to experience issues updating our sing-box apps on the App Store and Play Store. 
-Until we rewrite and resubmit the apps, they are considered irrecoverable. 
+We continue to experience issues updating our sing-box apps on the App Store and Play Store.
+Until we rewrite and resubmit the apps, they are considered irrecoverable.
 Therefore, after this release, we will not be repeating this notice unless there is new information.
 
-#### 1.11.15
+### 1.11.15
 
 * Fixes and improvements
 
@@ -258,7 +317,7 @@ violated the rules (TestFlight users are not affected)._
 
 We have significantly improved the performance of tun inbound on Apple platforms, especially in the gVisor stack.
 
-#### 1.11.14
+### 1.11.14
 
 * Fixes and improvements
 
@@ -308,7 +367,7 @@ You can now choose what the DERP home page shows, just like with derper's `-home
 
 See [DERP](/configuration/service/derp/#home).
 
-#### 1.11.13
+### 1.11.13
 
 * Fixes and improvements
 
@@ -346,7 +405,7 @@ SSM API service is a RESTful API server for managing Shadowsocks servers.
 
 See [SSM API Service](/configuration/service/ssm-api/).
 
-#### 1.11.11
+### 1.11.11
 
 * Fixes and improvements
 
@@ -378,7 +437,7 @@ You can now set `bind_interface`, `routing_mark` and `reuse_addr` in Listen Fiel
 
 See [Listen Fields](/configuration/shared/listen/).
 
-#### 1.11.10
+### 1.11.10
 
 * Undeprecate the `block` outbound **1**
 * Fixes and improvements
@@ -396,7 +455,7 @@ violated the rules (TestFlight users are not affected)._
 * Update quic-go to v0.51.0
 * Fixes and improvements
 
-#### 1.11.9
+### 1.11.9
 
 * Fixes and improvements
 
@@ -407,7 +466,7 @@ violated the rules (TestFlight users are not affected)._
 
 * Fixes and improvements
 
-#### 1.11.8
+### 1.11.8
 
 * Improve `auto_redirect` **1**
 * Fixes and improvements
@@ -424,7 +483,7 @@ violated the rules (TestFlight users are not affected)._
 
 * Fixes and improvements
 
-#### 1.11.7
+### 1.11.7
 
 * Fixes and improvements
 
@@ -440,7 +499,7 @@ violated the rules (TestFlight users are not affected)._
 Now `auto_redirect` fixes compatibility issues between tun and Docker bridge networks,
 see [Tun](/configuration/inbound/tun/#auto_redirect).
 
-#### 1.11.6
+### 1.11.6
 
 * Fixes and improvements
 
@@ -481,7 +540,7 @@ See [Protocol Sniff](/configuration/route/sniff/).
 
 See [Dial Fields](/configuration/shared/dial/#domain_resolver).
 
-#### 1.11.5
+### 1.11.5
 
 * Fixes and improvements
 
@@ -497,7 +556,7 @@ violated the rules (TestFlight users are not affected)._
 
 See [DNS Rule Action](/configuration/dns/rule_action/#predefined).
 
-#### 1.11.4
+### 1.11.4
 
 * Fixes and improvements
 
@@ -520,7 +579,8 @@ See [AnyTLS Inbound](/configuration/inbound/anytls/) and [AnyTLS Outbound](/conf
 
 **2**:
 
-`resolve` route action now accepts `disable_cache` and other options like in DNS route actions, see [Route Action](/configuration/route/rule_action).
+`resolve` route action now accepts `disable_cache` and other options like in DNS route actions,
+see [Route Action](/configuration/route/rule_action).
 
 **3**:
 
@@ -551,9 +611,10 @@ See [Tailscale](/configuration/endpoint/tailscale/).
 
 Due to maintenance difficulties, sing-box 1.12.0 requires at least Go 1.23 to compile.
 
-For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches from [MetaCubeX/go](https://github.com/MetaCubeX/go).
+For Windows 7 users, legacy binaries now continue to compile with Go 1.23 and patches
+from [MetaCubeX/go](https://github.com/MetaCubeX/go).
 
-#### 1.11.3
+### 1.11.3
 
 * Fixes and improvements
 
@@ -564,7 +625,7 @@ process._
 
 * Fixes and improvements
 
-#### 1.11.1
+### 1.11.1
 
 * Fixes and improvements
 
@@ -743,7 +804,7 @@ See [Hysteria2](/configuration/outbound/hysteria2/).
 
 When `up_mbps` and `down_mbps` are set, `ignore_client_bandwidth` instead denies clients from using BBR CC.
 
-#### 1.10.7
+### 1.10.7
 
 * Fixes and improvements
 
@@ -838,7 +899,7 @@ and the old outbound will be removed in sing-box 1.13.0.
 See [Endpoint](/configuration/endpoint/), [WireGuard Endpoint](/configuration/endpoint/wireguard/)
 and [Migrate WireGuard outbound fields to route options](/migration/#migrate-wireguard-outbound-to-endpoint).
 
-#### 1.10.2
+### 1.10.2
 
 * Add deprecated warnings
 * Fix proxying websocket connections in HTTP/mixed inbounds
@@ -975,7 +1036,7 @@ See [Rule Action](/configuration/route/rule_action/).
 * Update quic-go to v0.48.0
 * Fixes and improvements
 
-#### 1.10.1
+### 1.10.1
 
 * Fixes and improvements
 

docs/clients/apple/index.md

@@ -9,7 +9,7 @@ platform-specific function implementation, such as TUN transparent proxy impleme
 
 !!! failure ""
 
-    We are temporarily unable to update sing-box apps on the App Store because the reviewer mistakenly found that we violated the rules (TestFlight users are not affected).
+    Due to non-technical reasons, we are temporarily unable to update the sing-box app on the App Store and release the standalone version of the macOS client (TestFlight users are not affected)
 
 ## :material-graph: Requirements
 
@@ -18,7 +18,7 @@ platform-specific function implementation, such as TUN transparent proxy impleme
 
 ## :material-download: Download
 
-* [App Store](https://apps.apple.com/app/sing-box-vt/id6673731168)
+* ~~[App Store](https://apps.apple.com/app/sing-box-vt/id6673731168)~~
 * TestFlight (Beta)
 
 TestFlight quota is only available to [sponsors](https://github.com/sponsors/nekohasekai)
@@ -26,15 +26,15 @@ TestFlight quota is only available to [sponsors](https://github.com/sponsors/nek
 Once you donate, you can get an invitation by join our Telegram group for sponsors from [@yet_another_sponsor_bot](https://t.me/yet_another_sponsor_bot)
 or sending us your Apple ID [via email](mailto:contact@sagernet.org).
 
-## :material-file-download: Download (macOS standalone version)
+## ~~:material-file-download: Download (macOS standalone version)~~
 
-* [Homebrew Cask](https://formulae.brew.sh/cask/sfm)
+* ~~[Homebrew Cask](https://formulae.brew.sh/cask/sfm)~~
 
 ```bash
-brew install sfm
+# brew install sfm
 ```
 
-* [GitHub Releases](https://github.com/SagerNet/sing-box/releases)
+* ~~[GitHub Releases](https://github.com/SagerNet/sing-box/releases)~~
 
 ## :material-source-repository: Source code
 

docs/configuration/certificate/index.zh.md

@@ -0,0 +1,54 @@
+---
+icon: material/new-box
+---
+
+!!! question "自 sing-box 1.12.0 起"
+
+# 证书
+
+### 结构
+
+```json
+{
+  "store": "",
+  "certificate": [],
+  "certificate_path": [],
+  "certificate_directory_path": []
+}
+```
+
+!!! note ""
+
+    当内容只有一项时，可以忽略 JSON 数组 [] 标签
+
+### 字段
+
+#### store
+
+默认的 X509 受信任 CA 证书列表。
+
+| 类型                | 描述                                                                                       |
+|--------------------|--------------------------------------------------------------------------------------------|
+| `system`（默认）    | 系统受信任的 CA 证书                                                                        |
+| `mozilla`          | [Mozilla 包含列表](https://wiki.mozilla.org/CA/Included_Certificates)（已移除中国 CA 证书） |
+| `none`             | 空列表                                                                                     |
+
+#### certificate
+
+要信任的证书行数组，PEM 格式。
+
+#### certificate_path
+
+!!! note ""
+
+    文件修改时将自动重新加载。
+
+要信任的证书路径，PEM 格式。
+
+#### certificate_directory_path
+
+!!! note ""
+
+    文件修改时将自动重新加载。
+
+搜索要信任的证书的目录路径，PEM 格式。