documentation: Bump version

Reference: https://gitlab.com/go-extension/tls

.fpm_openwrt

@@ -0,0 +1,30 @@
+-s dir
+--name sing-box
+--category net
+--license GPL-3.0-or-later
+--description "The universal proxy platform."
+--url "https://sing-box.sagernet.org/"
+--maintainer "nekohasekai <contact-git@sekai.icu>"
+--no-deb-generate-changes
+
+--config-files /etc/config/sing-box
+--config-files /etc/sing-box/config.json
+
+--depends ca-bundle
+--depends kmod-inet-diag
+--depends kmod-tun
+--depends firewall4
+
+--before-remove release/config/openwrt.prerm
+
+release/config/config.json=/etc/sing-box/config.json
+
+release/config/openwrt.conf=/etc/config/sing-box
+release/config/openwrt.init=/etc/init.d/sing-box
+release/config/openwrt.keep=/lib/upgrade/keep.d/sing-box
+
+release/completions/sing-box.bash=/usr/share/bash-completion/completions/sing-box.bash
+release/completions/sing-box.fish=/usr/share/fish/vendor_completions.d/sing-box.fish
+release/completions/sing-box.zsh=/usr/share/zsh/site-functions/_sing-box
+
+LICENSE=/usr/share/licenses/sing-box/LICENSE

.fpm_systemd

@@ -0,0 +1,25 @@
+-s dir
+--name sing-box
+--category net
+--license GPL-3.0-or-later
+--description "The universal proxy platform."
+--url "https://sing-box.sagernet.org/"
+--maintainer "nekohasekai <contact-git@sekai.icu>"
+--deb-field "Bug: https://github.com/SagerNet/sing-box/issues"
+--no-deb-generate-changes
+--config-files /etc/sing-box/config.json
+--after-install release/config/sing-box.postinst
+
+release/config/config.json=/etc/sing-box/config.json
+
+release/config/sing-box.service=/usr/lib/systemd/system/sing-box.service
+release/config/sing-box@.service=/usr/lib/systemd/system/sing-box@.service
+release/config/sing-box.sysusers=/usr/lib/sysusers.d/sing-box.conf
+release/config/sing-box.rules=usr/share/polkit-1/rules.d/sing-box.rules
+release/config/sing-box-split-dns.xml=/usr/share/dbus-1/system.d/sing-box-split-dns.conf
+
+release/completions/sing-box.bash=/usr/share/bash-completion/completions/sing-box.bash
+release/completions/sing-box.fish=/usr/share/fish/vendor_completions.d/sing-box.fish
+release/completions/sing-box.zsh=/usr/share/zsh/site-functions/_sing-box
+
+LICENSE=/usr/share/licenses/sing-box/LICENSE

.github/deb2ipk.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# mod from https://gist.github.com/pldubouilh/c5703052986bfdd404005951dee54683
+
+set -e -o pipefail
+
+PROJECT=$(dirname "$0")/../..
+TMP_PATH=`mktemp -d`
+cp $2 $TMP_PATH
+pushd $TMP_PATH
+
+DEB_NAME=`ls *.deb`
+ar x $DEB_NAME
+
+mkdir control
+pushd control
+tar xf ../control.tar.gz
+rm md5sums
+sed "s/Architecture:\\ \w*/Architecture:\\ $1/g" ./control -i
+cat control
+tar czf ../control.tar.gz ./*
+popd
+
+DEB_NAME=${DEB_NAME%.deb}
+tar czf $DEB_NAME.ipk control.tar.gz data.tar.gz debian-binary
+popd
+
+cp $TMP_PATH/$DEB_NAME.ipk $3
+rm -r $TMP_PATH

.github/goreleaser/README.md

@@ -1,3 +0,0 @@
-# goreleaser
-
-I'm sorry for this, but I can't afford to renew for now because the subscription is too expensive for an open source project.

.github/goreleaser/config.json

@@ -1,87 +0,0 @@
-{
-  "dns": {
-    "servers": [
-      {
-        "type": "tls",
-        "server": "8.8.8.8"
-      }
-    ]
-  },
-  "inbounds": [
-    {
-      "type": "tun",
-      "address": [
-        "172.19.0.1/30",
-        "fdfe:dcba:9876::1/126"
-      ],
-      "auto_route": true,
-      "auto_redirect": true
-    }
-  ],
-  "certificate": {
-    "tls_decryption": {
-      "enabled": true,
-      "key_pair_p12": "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",
-      "key_pair_p12_password": "D173A3D9"
-    }
-  },
-  "mitm": {
-    "enabled": true,
-    "http2_enabled": true
-  },
-  "outbounds": [
-    {
-      "type": "direct",
-      "tag": "direct"
-    }
-  ],
-  "route": {
-    "rules": [
-      {
-        "action": "sniff"
-      },
-      {
-        "type": "logical",
-        "mode": "or",
-        "rules": [
-          {
-            "network": "udp",
-            "port": 53
-          },
-          {
-            "protocol": "dns"
-          }
-        ],
-        "action": "hijack-dns"
-      },
-      {
-        "ip_is_private": true,
-        "outbound": "direct"
-      },
-      {
-        "action": "resolve"
-      },
-      {
-        "domain": "goreleaser.com",
-        "action": "route-options",
-        "mitm": {
-          "enabled": true,
-          "surge_map_local": [
-            "^https://goreleaser\\.com/static/latest-pro data-type=text data=\"(update check disabled)\""
-          ]
-        }
-      },
-      {
-        "domain": "api.gumroad.com",
-        "action": "route-options",
-        "mitm": {
-          "enabled": true,
-          "surge_map_local": [
-            "^https://api\\.gumroad\\.com/v2/licenses/verify data-type=file data=.github/goreleaser/response.json header=\"Content-Type:application/json\""
-          ]
-        }
-      }
-    ],
-    "auto_detect_interface": true
-  }
-}

.github/goreleaser/configure.sh

@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-set -e -o pipefail
-
-release/local/install_minimal.sh
-sudo cp .github/goreleaser/config.json /usr/local/etc/sing-box/config.json
-sudo mkdir -p /var/lib/sing-box/.github/goreleaser
-sudo cp .github/goreleaser/response.json /var/lib/sing-box/.github/goreleaser/response.json
-go run -v ./cmd/sing-box tools install-ca .github/goreleaser/ca.crt
-sudo systemctl start sing-box
-sleep 5

.github/goreleaser/response.json

@@ -1,12 +0,0 @@
-{
-  "success": true,
-  "purchase": {
-    "license_key": "fake-key",
-    "subscription_id": "fake-id",
-    "product_id": "7ev6hHL7RZc753daE5bRNw==",
-    "product_permalink": "https:\/\/beckersoft.gumroad.com\/l\/goreleaser",
-    "seller_id": "A2wDalJj66fJdFU_jwy_oA==",
-    "short_product_id": "CadfZ",
-    "permalink": "goreleaser"
-  }
-}

.github/setup_legacy_go.sh

@@ -1,10 +1,13 @@
 #!/usr/bin/env bash
 
-VERSION="1.23.6"
+VERSION="1.23.12"
+
+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 $HOME/go/go_legacy
-cd $HOME/go/go_legacy
+mv go go_legacy
+cd go_legacy
 
 # modify from https://github.com/restic/restic/issues/4636#issuecomment-1896455557
 # this patch file only works on golang1.23.x

.github/workflows/build.yml

@@ -40,22 +40,22 @@ jobs:
       version: ${{ steps.outputs.outputs.version }}
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.25.1
       - name: Check input version
         if: github.event_name == 'workflow_dispatch'
         run: |-
-          echo "version=${{ inputs.version }}" 
+          echo "version=${{ inputs.version }}"
           echo "version=${{ inputs.version }}" >> "$GITHUB_ENV"
       - name: Calculate version
         if: github.event_name != 'workflow_dispatch'
         run: |-
-          go run -v ./cmd/internal/read_tag --nightly
+          go run -v ./cmd/internal/read_tag --ci --nightly
       - name: Set outputs
         id: outputs
         run: |-
@@ -69,137 +69,222 @@ jobs:
     strategy:
       matrix:
         include:
-          - name: linux_386
-            goos: linux
-            goarch: 386
-          - name: linux_amd64
-            goos: linux
-            goarch: amd64
-          - name: linux_arm64
-            goos: linux
-            goarch: arm64
-          - name: linux_arm
-            goos: linux
-            goarch: arm
-            goarm: 6
-          - name: linux_arm_v7
-            goos: linux
-            goarch: arm
-            goarm: 7
-          - name: linux_s390x
-            goos: linux
-            goarch: s390x
-          - name: linux_riscv64
-            goos: linux
-            goarch: riscv64
-          - name: linux_mips64le
-            goos: linux
-            goarch: mips64le
-          - name: windows_amd64
-            goos: windows
-            goarch: amd64
-            require_legacy_go: true
-          - name: windows_386
-            goos: windows
-            goarch: 386
-            require_legacy_go: true
-          - name: windows_arm64
-            goos: windows
-            goarch: arm64
-          - name: darwin_arm64
-            goos: darwin
-            goarch: arm64
-          - name: darwin_amd64
-            goos: darwin
-            goarch: amd64
-          - name: android_arm64
-            goos: android
-            goarch: arm64
-          - name: android_arm
-            goos: android
-            goarch: arm
-            goarm: 7
-          - name: android_amd64
-            goos: android
-            goarch: amd64
-          - name: android_386
-            goos: android
-            goarch: 386
+          - { os: linux, arch: amd64, debian: amd64, rpm: x86_64, pacman: x86_64, openwrt: "x86_64" }
+          - { os: linux, arch: "386", go386: sse2, debian: i386, rpm: i386, openwrt: "i386_pentium4" }
+          - { os: linux, arch: "386", go386: softfloat, openwrt: "i386_pentium-mmx" }
+          - { os: linux, arch: arm64, debian: arm64, rpm: aarch64, pacman: aarch64, openwrt: "aarch64_cortex-a53 aarch64_cortex-a72 aarch64_cortex-a76 aarch64_generic" }
+          - { os: linux, arch: arm, goarm: "5", openwrt: "arm_arm926ej-s arm_cortex-a7 arm_cortex-a9 arm_fa526 arm_xscale" }
+          - { os: linux, arch: arm, goarm: "6", debian: armel, rpm: armv6hl, openwrt: "arm_arm1176jzf-s_vfp" }
+          - { os: linux, arch: arm, goarm: "7", debian: armhf, rpm: armv7hl, pacman: armv7hl, openwrt: "arm_cortex-a5_vfpv4 arm_cortex-a7_neon-vfpv4 arm_cortex-a7_vfpv4 arm_cortex-a8_vfpv3 arm_cortex-a9_neon arm_cortex-a9_vfpv3-d16 arm_cortex-a15_neon-vfpv4" }
+          - { os: linux, arch: mips, gomips: softfloat, openwrt: "mips_24kc mips_4kec mips_mips32" }
+          - { os: linux, arch: mipsle, gomips: hardfloat, debian: mipsel, rpm: mipsel, openwrt: "mipsel_24kc_24kf" }
+          - { os: linux, arch: mipsle, gomips: softfloat, openwrt: "mipsel_24kc mipsel_74kc mipsel_mips32" }
+          - { os: linux, arch: mips64, gomips: softfloat, openwrt: "mips64_mips64r2 mips64_octeonplus" }
+          - { os: linux, arch: mips64le, gomips: hardfloat, debian: mips64el, rpm: mips64el }
+          - { os: linux, arch: mips64le, gomips: softfloat, openwrt: "mips64el_mips64r2" }
+          - { os: linux, arch: s390x, debian: s390x, rpm: s390x }
+          - { os: linux, arch: ppc64le, debian: ppc64el, rpm: ppc64le }
+          - { os: linux, arch: riscv64, debian: riscv64, rpm: riscv64, openwrt: "riscv64_generic" }
+          - { 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: "386" }
+          - { os: windows, arch: "386", legacy_go123: 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" }
+          - { os: android, arch: "386", ndk: "i686-linux-android21" }
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Setup Go
+        if: ${{ ! (matrix.legacy_go123 || matrix.legacy_go124) }}
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
-      - name: Cache legacy Go
-        if: matrix.require_legacy_go
+          go-version: ^1.25.1
+      - name: Setup Go 1.24
+        if: matrix.legacy_go124
+        uses: actions/setup-go@v5
+        with:
+          go-version: ~1.24.6
+      - name: Cache Go 1.23
+        if: matrix.legacy_go123
         id: cache-legacy-go
         uses: actions/cache@v4
         with:
           path: |
             ~/go/go_legacy
-          key: go_legacy_1236
-      - name: Setup legacy Go
-        if: matrix.require_legacy_go && steps.cache-legacy-go.outputs.cache-hit != 'true'
-        run: bash .github/setup_legacy_go.sh
+          key: go_legacy_12312
+      - name: Setup Go 1.23
+        if: matrix.legacy_go123 && steps.cache-legacy-go.outputs.cache-hit != 'true'
+        run: |-
+          .github/setup_legacy_go.sh
+      - name: Setup Go 1.23
+        if: matrix.legacy_go123
+        run: |-
+          echo "PATH=$HOME/go/go_legacy/bin:$PATH" >> $GITHUB_ENV
+          echo "GOROOT=$HOME/go/go_legacy" >> $GITHUB_ENV
       - name: Setup Android NDK
-        if: matrix.goos == 'android'
+        if: matrix.os == 'android'
         uses: nttld/setup-ndk@v1
         with:
           ndk-version: r28
           local-cache: true
-      - name: Setup Goreleaser
-        uses: goreleaser/goreleaser-action@v6
-        with:
-          distribution: goreleaser-pro
-          version: '~> v2'
-          install-only: true
-      - name: Extract signing key
-        run: |-
-          mkdir -p $HOME/.gnupg
-          cat > $HOME/.gnupg/sagernet.key <<EOF
-          ${{ secrets.GPG_KEY }}
-          EOF
-          echo "HOME=$HOME" >> "$GITHUB_ENV"
       - name: Set tag
         run: |-
           git ls-remote --exit-code --tags origin v${{ 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'
+          echo "BUILD_TAGS=${TAGS}" >> "${GITHUB_ENV}"
       - name: Build
-        if: matrix.goos != 'android'
-        run: |-
-          goreleaser release --clean --split
+        if: matrix.os != 'android'
+        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:
-          GOOS: ${{ matrix.goos }}
-          GOARCH: ${{ matrix.goarch }}
-          GOPATH: ${{ env.HOME }}/go
+          CGO_ENABLED: "0"
+          GOOS: ${{ matrix.os }}
+          GOARCH: ${{ matrix.arch }}
+          GO386: ${{ matrix.go386 }}
           GOARM: ${{ matrix.goarm }}
+          GOMIPS: ${{ matrix.gomips }}
+          GOMIPS64: ${{ matrix.gomips }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
-          NFPM_KEY_PATH: ${{ env.HOME }}/.gnupg/sagernet.key
-          NFPM_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
       - name: Build Android
-        if: matrix.goos == 'android'
-        run: |-
+        if: matrix.os == 'android'
+        run: |
+          set -xeuo pipefail
           go install -v ./cmd/internal/build
-          GOOS=$BUILD_GOOS GOARCH=$BUILD_GOARCH build goreleaser release --clean --split
+          export CC='${{ matrix.ndk }}-clang'
+          export CXX="${CC}++"
+          mkdir -p dist
+          GOOS=$BUILD_GOOS GOARCH=$BUILD_GOARCH build go build -v -trimpath -o dist/sing-box -tags "${BUILD_TAGS}" \
+          -ldflags '-s -buildid= -X github.com/sagernet/sing-box/constant.Version=${{ needs.calculate_version.outputs.version }} -checklinkname=0' \
+          ./cmd/sing-box
         env:
-          BUILD_GOOS: ${{ matrix.goos }}
-          BUILD_GOARCH: ${{ matrix.goarch }}
-          GOARM: ${{ matrix.goarm }}
+          CGO_ENABLED: "1"
+          BUILD_GOOS: ${{ matrix.os }}
+          BUILD_GOARCH: ${{ matrix.arch }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
-          NFPM_KEY_PATH: ${{ env.HOME }}/.gnupg/sagernet.key
-          NFPM_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+      - name: Set name
+        run: |-
+          DIR_NAME="sing-box-${{ needs.calculate_version.outputs.version }}-${{ matrix.os }}-${{ matrix.arch }}"
+          if [[ -n "${{ matrix.goarm }}" ]]; then
+            DIR_NAME="${DIR_NAME}v${{ matrix.goarm }}"
+          elif [[ -n "${{ matrix.go386 }}" && "${{ matrix.go386 }}" != 'sse2' ]]; then
+            DIR_NAME="${DIR_NAME}-${{ matrix.go386 }}"
+          elif [[ -n "${{ matrix.gomips }}" && "${{ matrix.gomips }}" != 'hardfloat' ]]; then
+            DIR_NAME="${DIR_NAME}-${{ matrix.gomips }}"
+          elif [[ -n "${{ matrix.legacy_name }}" ]]; then
+            DIR_NAME="${DIR_NAME}-legacy-${{ matrix.legacy_name }}"
+          fi
+          echo "DIR_NAME=${DIR_NAME}" >> "${GITHUB_ENV}"
+          PKG_VERSION="${{ needs.calculate_version.outputs.version }}"
+          PKG_VERSION="${PKG_VERSION//-/\~}"
+          echo "PKG_VERSION=${PKG_VERSION}" >> "${GITHUB_ENV}"
+      - name: Package DEB
+        if: matrix.debian != ''
+        run: |
+          set -xeuo pipefail
+          sudo gem install fpm
+          sudo apt-get update
+          sudo apt-get install -y debsigs
+          cp .fpm_systemd .fpm
+          fpm -t deb \
+            -v "$PKG_VERSION" \
+            -p "dist/sing-box_${{ needs.calculate_version.outputs.version }}_${{ matrix.os }}_${{ matrix.debian }}.deb" \
+            --architecture ${{ matrix.debian }} \
+            dist/sing-box=/usr/bin/sing-box
+          curl -Lo '/tmp/debsigs.diff' 'https://gitlab.com/debsigs/debsigs/-/commit/160138f5de1ec110376d3c807b60a37388bc7c90.diff'
+          sudo patch /usr/bin/debsigs < '/tmp/debsigs.diff'
+          rm -rf $HOME/.gnupg
+          gpg --pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}" --import <<EOF
+          ${{ secrets.GPG_KEY }}
+          EOF
+          debsigs --sign=origin -k ${{ secrets.GPG_KEY_ID }} --gpgopts '--pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}"' dist/*.deb
+      - name: Package RPM
+        if: matrix.rpm != ''
+        run: |-
+          set -xeuo pipefail
+          sudo gem install fpm
+          cp .fpm_systemd .fpm
+          fpm -t rpm \
+            -v "$PKG_VERSION" \
+            -p "dist/sing-box_${{ needs.calculate_version.outputs.version }}_${{ matrix.os }}_${{ matrix.rpm }}.rpm" \
+            --architecture ${{ matrix.rpm }} \
+            dist/sing-box=/usr/bin/sing-box
+          cat > $HOME/.rpmmacros <<EOF
+          %_gpg_name ${{ secrets.GPG_KEY_ID }}
+          %_gpg_sign_cmd_extra_args --pinentry-mode loopback --passphrase ${{ secrets.GPG_PASSPHRASE }}
+          EOF
+          gpg --pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}" --import <<EOF
+          ${{ secrets.GPG_KEY }}
+          EOF
+          rpmsign --addsign dist/*.rpm
+      - name: Package Pacman
+        if: matrix.pacman != ''
+        run: |-
+          set -xeuo pipefail
+          sudo gem install fpm
+          sudo apt-get update
+          sudo apt-get install -y libarchive-tools
+          cp .fpm_systemd .fpm
+          fpm -t pacman \
+            -v "$PKG_VERSION" \
+            -p "dist/sing-box_${{ needs.calculate_version.outputs.version }}_${{ matrix.os }}_${{ matrix.pacman }}.pkg.tar.zst" \
+            --architecture ${{ matrix.pacman }} \
+            dist/sing-box=/usr/bin/sing-box
+      - name: Package OpenWrt
+        if: matrix.openwrt != ''
+        run: |-
+          set -xeuo pipefail
+          sudo gem install fpm
+          cp .fpm_openwrt .fpm
+          fpm -t deb \
+            -v "$PKG_VERSION" \
+            -p "dist/openwrt.deb" \
+            --architecture all \
+            dist/sing-box=/usr/bin/sing-box
+          for architecture in ${{ matrix.openwrt }}; do
+            .github/deb2ipk.sh "$architecture" "dist/openwrt.deb" "dist/sing-box_${{ needs.calculate_version.outputs.version }}_openwrt_${architecture}.ipk"
+          done
+          rm "dist/openwrt.deb"
+      - name: Archive
+        run: |
+          set -xeuo pipefail
+          cd dist
+          mkdir -p "${DIR_NAME}"
+          cp ../LICENSE "${DIR_NAME}"
+          if [ '${{ matrix.os }}' = 'windows' ]; then
+            cp sing-box "${DIR_NAME}/sing-box.exe"
+            zip -r "${DIR_NAME}.zip" "${DIR_NAME}"
+          else
+            cp sing-box "${DIR_NAME}"
+            tar -czvf "${DIR_NAME}.tar.gz" "${DIR_NAME}"
+          fi
+          rm -r "${DIR_NAME}"
+      - name: Cleanup
+        run: rm dist/sing-box
       - name: Upload artifact
-        if: github.event_name == 'workflow_dispatch'
         uses: actions/upload-artifact@v4
         with:
-          name: binary-${{ matrix.name }}
-          path: 'dist'
+          name: binary-${{ 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_android:
     name: Build Android
     if: github.event_name != 'workflow_dispatch' || inputs.build == 'All' || inputs.build == 'Android'
@@ -208,14 +293,14 @@ jobs:
       - calculate_version
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
           submodules: 'recursive'
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.25.1
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -271,13 +356,11 @@ jobs:
           ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
           LOCAL_PROPERTIES: ${{ secrets.LOCAL_PROPERTIES }}
       - name: Prepare upload
-        if: github.event_name == 'workflow_dispatch'
         run: |-
-          mkdir -p dist/release
-          cp clients/android/app/build/outputs/apk/play/release/*.apk dist/release
-          cp clients/android/app/build/outputs/apk/other/release/*-universal.apk dist/release
+          mkdir -p dist
+          cp clients/android/app/build/outputs/apk/play/release/*.apk dist
+          cp clients/android/app/build/outputs/apk/other/release/*-universal.apk dist
       - name: Upload artifact
-        if: github.event_name == 'workflow_dispatch'
         uses: actions/upload-artifact@v4
         with:
           name: binary-android-apks
@@ -290,14 +373,14 @@ jobs:
       - calculate_version
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
           submodules: 'recursive'
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.25.1
       - name: Setup Android NDK
         id: setup-ndk
         uses: nttld/setup-ndk@v1
@@ -387,7 +470,7 @@ jobs:
     steps:
       - name: Checkout
         if: matrix.if
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
           submodules: 'recursive'
@@ -395,15 +478,15 @@ jobs:
         if: matrix.if
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          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_16.2.app
+          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_16.2.app
+          sudo xcode-select -s /Applications/Xcode_16.4.app
       - name: Set tag
         if: matrix.if
         run: |-
@@ -435,19 +518,19 @@ jobs:
 
           PROFILES_ZIP_PATH=$RUNNER_TEMP/Profiles.zip
           echo -n "$PROVISIONING_PROFILES" | base64 --decode -o $PROFILES_ZIP_PATH
-          
+
           PROFILES_PATH="$HOME/Library/MobileDevice/Provisioning Profiles"
           mkdir -p "$PROFILES_PATH"
           unzip $PROFILES_ZIP_PATH -d "$PROFILES_PATH"
-          
+
           ASC_KEY_PATH=$RUNNER_TEMP/Key.p12
           echo -n "$ASC_KEY" | base64 --decode -o $ASC_KEY_PATH
-          
+
           xcrun notarytool store-credentials "notarytool-password" \
             --key $ASC_KEY_PATH \
             --key-id $ASC_KEY_ID \
             --issuer $ASC_KEY_ISSUER_ID
-          
+
           echo "ASC_KEY_PATH=$ASC_KEY_PATH" >> "$GITHUB_ENV"
           echo "ASC_KEY_ID=$ASC_KEY_ID" >> "$GITHUB_ENV"
           echo "ASC_KEY_ISSUER_ID=$ASC_KEY_ISSUER_ID" >> "$GITHUB_ENV"
@@ -472,10 +555,13 @@ jobs:
           MACOS_PROJECT_VERSION=$(go run -v ./cmd/internal/app_store_connect next_macos_project_version)
           echo "MACOS_PROJECT_VERSION=$MACOS_PROJECT_VERSION"
           echo "MACOS_PROJECT_VERSION=$MACOS_PROJECT_VERSION" >> "$GITHUB_ENV"
+      - name: Update version
+        if: matrix.if && matrix.name != 'iOS'
+        run: |-
+          go run -v ./cmd/internal/update_apple_version --ci
       - name: Build
         if: matrix.if
         run: |-
-          go run -v ./cmd/internal/update_apple_version --ci
           cd clients/apple
           xcodebuild archive \
             -scheme "${{ matrix.scheme }}" \
@@ -523,10 +609,10 @@ jobs:
           cd "${{ matrix.archive }}"
           zip -r SFM.dSYMs.zip dSYMs
           popd
-          
-          mkdir -p dist/release
-          cp clients/apple/SFM.dmg "dist/release/SFM-${VERSION}-universal.dmg"
-          cp "clients/apple/${{ matrix.archive }}/SFM.dSYMs.zip" "dist/release/SFM-${VERSION}-universal.dSYMs.zip"
+
+          mkdir -p dist
+          cp clients/apple/SFM.dmg "dist/SFM-${VERSION}-universal.dmg"
+          cp "clients/apple/${{ matrix.archive }}/SFM.dSYMs.zip" "dist/SFM-${VERSION}-universal.dSYMs.zip"
       - name: Upload image
         if: matrix.if && matrix.name == 'macOS-standalone' && github.event_name == 'workflow_dispatch'
         uses: actions/upload-artifact@v4
@@ -535,7 +621,7 @@ jobs:
           path: 'dist'
   upload:
     name: Upload builds
-    if: always() && github.event_name == 'workflow_dispatch' && (inputs.build == 'All' || inputs.build == 'Binary' || inputs.build == 'Android' || inputs.build == 'Apple' || inputs.build == 'macOS-standalone')
+    if: "!failure() && github.event_name == 'workflow_dispatch' && (inputs.build == 'All' || inputs.build == 'Binary' || inputs.build == 'Android' || inputs.build == 'Apple' || inputs.build == 'macOS-standalone')"
     runs-on: ubuntu-latest
     needs:
       - calculate_version
@@ -544,15 +630,9 @@ jobs:
       - build_apple
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
-      - name: Setup Goreleaser
-        uses: goreleaser/goreleaser-action@v6
-        with:
-          distribution: goreleaser-pro
-          version: '~> v2'
-          install-only: true
       - name: Cache ghr
         uses: actions/cache@v4
         id: cache-ghr
@@ -573,30 +653,21 @@ jobs:
           git tag v${{ needs.calculate_version.outputs.version }} -f
           echo "VERSION=${{ needs.calculate_version.outputs.version }}" >> "$GITHUB_ENV"
       - name: Download builds
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           path: dist
           merge-multiple: true
-      - name: Merge builds
-        if: github.event_name != 'workflow_dispatch' || inputs.build == 'All' || inputs.build == 'Binary'
-        run: |-
-          goreleaser continue --merge --skip publish
-          mkdir -p dist/release
-          mv dist/*/sing-box*{tar.gz,zip,deb,rpm,_amd64.pkg.tar.zst,_arm64.pkg.tar.zst} dist/release
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
       - name: Upload builds
         if: ${{ env.PUBLISHED == 'false' }}
         run: |-
           export PATH="$PATH:$HOME/go/bin"
-          ghr --replace --draft --prerelease -p 5 "v${VERSION}" dist/release
+          ghr --replace --draft --prerelease -p 5 "v${VERSION}" dist
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Replace builds
         if: ${{ env.PUBLISHED != 'false' }}
         run: |-
           export PATH="$PATH:$HOME/go/bin"
-          ghr --replace -p 5 "v${VERSION}" dist/release
+          ghr --replace -p 5 "v${VERSION}" dist
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/docker.yml

@@ -39,7 +39,7 @@ jobs:
           echo "ref=$ref"
           echo "ref=$ref" >> $GITHUB_OUTPUT
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           ref: ${{ steps.ref.outputs.ref }}
           fetch-depth: 0
@@ -107,7 +107,7 @@ jobs:
           echo "latest=$latest"
           echo "latest=$latest" >> $GITHUB_OUTPUT
       - name: Download digests
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           path: /tmp/digests
           pattern: digests-*

.github/workflows/lint.yml

@@ -22,16 +22,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
+          go-version: ^1.25
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v8
         with:
           version: latest
           args: --timeout=30m
-          install-mode: binary
+          install-mode: binary
+          verify: false

.github/workflows/linux.yml

@@ -1,38 +1,189 @@
-name: Release to Linux repository
+name: Build Linux Packages
 
 on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Version name"
+        required: true
+        type: string
+      forceBeta:
+        description: "Force beta"
+        required: false
+        type: boolean
+        default: false
   release:
     types:
       - published
 
 jobs:
-  build:
+  calculate_version:
+    name: Calculate version
     runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.outputs.outputs.version }}
     steps:
       - name: Checkout
-        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.24
-      - name: Extract signing key
+          go-version: ^1.25.1
+      - name: Check input version
+        if: github.event_name == 'workflow_dispatch'
         run: |-
-          mkdir -p $HOME/.gnupg
-          cat > $HOME/.gnupg/sagernet.key <<EOF
+          echo "version=${{ inputs.version }}"
+          echo "version=${{ inputs.version }}" >> "$GITHUB_ENV"
+      - name: Calculate version
+        if: github.event_name != 'workflow_dispatch'
+        run: |-
+          go run -v ./cmd/internal/read_tag --ci --nightly
+      - name: Set outputs
+        id: outputs
+        run: |-
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+  build:
+    name: Build binary
+    runs-on: ubuntu-latest
+    needs:
+      - calculate_version
+    strategy:
+      matrix:
+        include:
+          - { os: linux, arch: amd64, debian: amd64, rpm: x86_64, pacman: x86_64 }
+          - { os: linux, arch: "386", debian: i386, rpm: i386 }
+          - { os: linux, arch: arm, goarm: "6", debian: armel, rpm: armv6hl }
+          - { os: linux, arch: arm, goarm: "7", debian: armhf, rpm: armv7hl, pacman: armv7hl }
+          - { os: linux, arch: arm64, debian: arm64, rpm: aarch64, pacman: aarch64 }
+          - { os: linux, arch: mips64le, debian: mips64el, rpm: mips64el }
+          - { os: linux, arch: mipsle, debian: mipsel, rpm: mipsel }
+          - { os: linux, arch: s390x, debian: s390x, rpm: s390x }
+          - { os: linux, arch: ppc64le, debian: ppc64el, rpm: ppc64le }
+          - { os: linux, arch: riscv64, debian: riscv64, rpm: riscv64 }
+          - { os: linux, arch: loong64, debian: loongarch64, rpm: loongarch64 }
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        with:
+          fetch-depth: 0
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ^1.25.1
+      - name: Setup Android NDK
+        if: matrix.os == 'android'
+        uses: nttld/setup-ndk@v1
+        with:
+          ndk-version: r28
+          local-cache: true
+      - 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${{ needs.calculate_version.outputs.version }} -f
+      - name: Set build tags
+        run: |
+          set -xeuo pipefail
+          TAGS='with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale'
+          echo "BUILD_TAGS=${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 }}' \
+          ./cmd/sing-box
+        env:
+          CGO_ENABLED: "0"
+          GOOS: ${{ matrix.os }}
+          GOARCH: ${{ matrix.arch }}
+          GOARM: ${{ matrix.goarm }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set mtime
+        run: |-
+          TZ=UTC touch -t '197001010000' dist/sing-box
+      - name: Set name
+        if: (! contains(needs.calculate_version.outputs.version, '-')) && !inputs.forceBeta
+        run: |-
+          echo "NAME=sing-box" >> "$GITHUB_ENV"
+      - name: Set beta name
+        if: contains(needs.calculate_version.outputs.version, '-') || inputs.forceBeta
+        run: |-
+          echo "NAME=sing-box-beta" >> "$GITHUB_ENV"
+      - name: Set version
+        run: |-
+          PKG_VERSION="${{ needs.calculate_version.outputs.version }}"
+          PKG_VERSION="${PKG_VERSION//-/\~}"
+          echo "PKG_VERSION=${PKG_VERSION}" >> "${GITHUB_ENV}"
+      - name: Package DEB
+        if: matrix.debian != ''
+        run: |
+          set -xeuo pipefail
+          sudo gem install fpm
+          sudo apt-get install -y debsigs
+          cp .fpm_systemd .fpm
+          fpm -t deb \
+            --name "${NAME}" \
+            -v "$PKG_VERSION" \
+            -p "dist/${NAME}_${{ needs.calculate_version.outputs.version }}_linux_${{ matrix.debian }}.deb" \
+            --architecture ${{ matrix.debian }} \
+            dist/sing-box=/usr/bin/sing-box
+          curl -Lo '/tmp/debsigs.diff' 'https://gitlab.com/debsigs/debsigs/-/commit/160138f5de1ec110376d3c807b60a37388bc7c90.diff'
+          sudo patch /usr/bin/debsigs < '/tmp/debsigs.diff'
+          rm -rf $HOME/.gnupg
+          gpg --pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}" --import <<EOF
           ${{ secrets.GPG_KEY }}
           EOF
-          echo "HOME=$HOME" >> "$GITHUB_ENV"
-      - name: Publish release
-        uses: goreleaser/goreleaser-action@v6
+          debsigs --sign=origin -k ${{ secrets.GPG_KEY_ID }} --gpgopts '--pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}"' dist/*.deb
+      - name: Package RPM
+        if: matrix.rpm != ''
+        run: |-
+          set -xeuo pipefail
+          sudo gem install fpm
+          cp .fpm_systemd .fpm
+          fpm -t rpm \
+            --name "${NAME}" \
+            -v "$PKG_VERSION" \
+            -p "dist/${NAME}_${{ needs.calculate_version.outputs.version }}_linux_${{ matrix.rpm }}.rpm" \
+            --architecture ${{ matrix.rpm }} \
+            dist/sing-box=/usr/bin/sing-box
+          cat > $HOME/.rpmmacros <<EOF
+          %_gpg_name ${{ secrets.GPG_KEY_ID }}
+          %_gpg_sign_cmd_extra_args --pinentry-mode loopback --passphrase ${{ secrets.GPG_PASSPHRASE }}
+          EOF
+          gpg --pinentry-mode loopback --passphrase "${{ secrets.GPG_PASSPHRASE }}" --import <<EOF
+          ${{ secrets.GPG_KEY }}
+          EOF
+          rpmsign --addsign dist/*.rpm
+      - name: Cleanup
+        run: rm dist/sing-box
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
         with:
-          distribution: goreleaser-pro
-          version: '~> v2'
-          args: release -f .goreleaser.fury.yaml --clean
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
-          FURY_TOKEN: ${{ secrets.FURY_TOKEN }}
-          NFPM_KEY_PATH: ${{ env.HOME }}/.gnupg/sagernet.key
-          NFPM_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          name: binary-${{ matrix.os }}_${{ matrix.arch }}${{ matrix.goarm && format('v{0}', matrix.goarm) }}${{ matrix.legacy_go && '-legacy' || '' }}
+          path: "dist"
+  upload:
+    name: Upload builds
+    runs-on: ubuntu-latest
+    needs:
+      - calculate_version
+      - build
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        with:
+          fetch-depth: 0
+      - name: Set tag
+        run: |-
+          git ls-remote --exit-code --tags origin v${{ needs.calculate_version.outputs.version }} || echo "PUBLISHED=false" >> "$GITHUB_ENV"
+          git tag v${{ needs.calculate_version.outputs.version }} -f
+          echo "VERSION=${{ needs.calculate_version.outputs.version }}" >> "$GITHUB_ENV"
+      - name: Download builds
+        uses: actions/download-artifact@v5
+        with:
+          path: dist
+          merge-multiple: true
+      - name: Publish packages
+        run: |-
+          ls dist | xargs -I {} curl -F "package=@dist/{}" https://${{ secrets.FURY_TOKEN }}@push.fury.io/sagernet/

.gitignore

@@ -1,7 +1,6 @@
 /.idea/
 /vendor/
 /*.json
-/*.js
 /*.srs
 /*.db
 /site/

.golangci.yml

@@ -1,38 +1,59 @@
-linters:
-  disable-all: true
-  enable:
-    - gofumpt
-    - govet
-    - gci
-    - staticcheck
-    - paralleltest
-    - ineffassign
-
-linters-settings:
-  gci:
-    custom-order: true
-    sections:
-      - standard
-      - prefix(github.com/sagernet/)
-      - default
-  staticcheck:
-    checks:
-      - all
-      - -SA1003
-
+version: "2"
 run:
-  go: "1.24"
+  go: "1.25"
   build-tags:
     - with_gvisor
     - with_quic
     - with_dhcp
     - with_wireguard
     - with_utls
-    - with_reality_server
     - with_acme
     - with_clash_api
-    - with_script
-
-issues:
-  exclude-dirs:
-    - transport/simple-obfs
+linters:
+  default: none
+  enable:
+    - govet
+    - ineffassign
+    - paralleltest
+    - staticcheck
+  settings:
+    staticcheck:
+      checks:
+        - all
+        - -S1000
+        - -S1008
+        - -S1017
+        - -ST1003
+        - -QF1001
+        - -QF1003
+        - -QF1008
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - transport/simple-obfs
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofumpt
+  settings:
+    gci:
+      sections:
+        - standard
+        - prefix(github.com/sagernet/)
+        - default
+      custom-order: true
+  exclusions:
+    generated: lax
+    paths:
+      - transport/simple-obfs
+      - third_party$
+      - builtin$
+      - examples$

.goreleaser.fury.yaml

@@ -15,7 +15,6 @@ builds:
       - with_dhcp
       - with_wireguard
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
       - with_tailscale
@@ -50,12 +49,18 @@ nfpms:
     contents:
       - src: release/config/config.json
         dst: /etc/sing-box/config.json
-        type: config
+        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

.goreleaser.yaml

@@ -17,11 +17,9 @@ builds:
       - with_dhcp
       - with_wireguard
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
       - with_tailscale
-      - with_script
     env:
       - CGO_ENABLED=0
       - GOTOOLCHAIN=local
@@ -48,11 +46,9 @@ builds:
       - with_dhcp
       - with_wireguard
       - with_utls
-      - with_reality_server
       - with_acme
       - with_clash_api
       - with_tailscale
-      - with_script
     env:
       - CGO_ENABLED=0
       - GOROOT={{ .Env.GOPATH }}/go_legacy
@@ -128,18 +124,24 @@ nfpms:
       - deb
       - rpm
       - archlinux
-    #      - apk
-    #      - ipk
+#      - apk
+#      - ipk
     priority: extra
     contents:
       - src: release/config/config.json
         dst: /etc/sing-box/config.json
-        type: config
+        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

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.24-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS builder
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"
 COPY . /go/src/github.com/sagernet/sing-box
 WORKDIR /go/src/github.com/sagernet/sing-box
@@ -13,9 +13,9 @@ RUN set -ex \
     && export COMMIT=$(git rev-parse --short HEAD) \
     && export VERSION=$(go run ./cmd/internal/read_tag) \
     && go build -v -trimpath -tags \
-        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_acme,with_clash_api" \
+        "with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale" \
         -o /go/bin/sing-box \
-        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid=" \
+        -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid= -checklinkname=0" \
         ./cmd/sing-box
 FROM --platform=$TARGETPLATFORM alpine AS dist
 LABEL maintainer="nekohasekai <contact-git@sekai.icu>"

Makefile

@@ -1,16 +1,13 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
-TAGS_GO120 = with_gvisor,with_dhcp,with_wireguard,with_reality_server,with_clash_api,with_quic,with_utls
-TAGS_GO123 = with_tailscale,with_script
-TAGS ?= $(TAGS_GO120),$(TAGS_GO123)
-TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_utls,with_reality_server
+TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale
 
 GOHOSTOS = $(shell go env GOHOSTOS)
 GOHOSTARCH = $(shell go env GOHOSTARCH)
-VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run ./cmd/internal/read_tag)
+VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run github.com/sagernet/sing-box/cmd/internal/read_tag@latest)
 
-PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
-MAIN_PARAMS = $(PARAMS) -tags $(TAGS)
+PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid= -checklinkname=0"
+MAIN_PARAMS = $(PARAMS) -tags "$(TAGS)"
 MAIN = ./cmd/sing-box
 PREFIX ?= $(shell go env GOPATH)
 
@@ -20,18 +17,13 @@ build:
 	export GOTOOLCHAIN=local && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
-ci_build_go120:
-	export GOTOOLCHAIN=local && \
-	go build $(PARAMS) $(MAIN) && \
-	go build $(PARAMS) -tags "$(TAGS_GO120)" $(MAIN)
-
 ci_build:
 	export GOTOOLCHAIN=local && \
 	go build $(PARAMS) $(MAIN) && \
 	go build $(MAIN_PARAMS) $(MAIN)
 
 generate_completions:
-	go run -v --tags $(TAGS),generate,generate_completions $(MAIN)
+	go run -v --tags "$(TAGS),generate,generate_completions" $(MAIN)
 
 install:
 	go build -o $(PREFIX)/bin/$(NAME) $(MAIN_PARAMS) $(MAIN)
@@ -53,7 +45,7 @@ lint:
 	GOOS=freebsd golangci-lint run ./...
 
 lint_install:
-	go install -v github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+	go install -v github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 
 proto:
 	@go run ./cmd/internal/protogen
@@ -116,6 +108,16 @@ upload_ios_app_store:
 	cd ../sing-box-for-apple && \
 	xcodebuild -exportArchive -archivePath build/SFI.xcarchive -exportOptionsPlist SFI/Upload.plist -allowProvisioningUpdates
 
+export_ios_ipa:
+	cd ../sing-box-for-apple && \
+	xcodebuild -exportArchive -archivePath build/SFI.xcarchive -exportOptionsPlist SFI/Export.plist -allowProvisioningUpdates -exportPath build/SFI && \
+	cp build/SFI/sing-box.ipa dist/SFI.ipa
+
+upload_ios_ipa:
+	cd dist && \
+	cp SFI.ipa "SFI-${VERSION}.ipa" && \
+	ghr --replace --draft --prerelease "v${VERSION}" "SFI-${VERSION}.ipa"
+
 release_ios: build_ios upload_ios_app_store
 
 build_macos:
@@ -183,6 +185,16 @@ upload_tvos_app_store:
 	cd ../sing-box-for-apple && \
 	xcodebuild -exportArchive -archivePath "build/SFT.xcarchive" -exportOptionsPlist SFI/Upload.plist -allowProvisioningUpdates
 
+export_tvos_ipa:
+	cd ../sing-box-for-apple && \
+	xcodebuild -exportArchive -archivePath "build/SFT.xcarchive" -exportOptionsPlist SFI/Export.plist -allowProvisioningUpdates -exportPath build/SFT && \
+	cp build/SFT/sing-box.ipa dist/SFT.ipa
+
+upload_tvos_ipa:
+	cd dist && \
+	cp SFT.ipa "SFT-${VERSION}.ipa" && \
+	ghr --replace --draft --prerelease "v${VERSION}" "SFT-${VERSION}.ipa"
+
 release_tvos: build_tvos upload_tvos_app_store
 
 update_apple_version:
@@ -233,8 +245,8 @@ lib:
 	go run ./cmd/internal/build_libbox -target ios
 
 lib_install:
-	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.1.5
-	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.1.5
+	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.1.8
+	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.1.8
 
 docs:
 	venv/bin/mkdocs serve
@@ -253,4 +265,4 @@ clean:
 update:
 	git fetch
 	git reset FETCH_HEAD --hard
-	git clean -fdx
+	git clean -fdx

adapter/certificate.go

@@ -10,9 +10,6 @@ import (
 type CertificateStore interface {
 	LifecycleService
 	Pool() *x509.CertPool
-	TLSDecryptionEnabled() bool
-	TLSDecryptionCertificate() *x509.Certificate
-	TLSDecryptionPrivateKey() any
 }
 
 func RootPoolFromContext(ctx context.Context) *x509.CertPool {

adapter/dns.go

@@ -7,7 +7,9 @@ import (
 	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"
 	"github.com/sagernet/sing/common/logger"
+	"github.com/sagernet/sing/service"
 
 	"github.com/miekg/dns"
 )
@@ -31,11 +33,30 @@ type DNSClient interface {
 }
 
 type DNSQueryOptions struct {
-	Transport    DNSTransport
-	Strategy     C.DomainStrategy
-	DisableCache bool
-	RewriteTTL   *uint32
-	ClientSubnet netip.Prefix
+	Transport      DNSTransport
+	Strategy       C.DomainStrategy
+	LookupStrategy C.DomainStrategy
+	DisableCache   bool
+	RewriteTTL     *uint32
+	ClientSubnet   netip.Prefix
+}
+
+func DNSQueryOptionsFrom(ctx context.Context, options *option.DomainResolveOptions) (*DNSQueryOptions, error) {
+	if options == nil {
+		return &DNSQueryOptions{}, nil
+	}
+	transportManager := service.FromContext[DNSTransportManager](ctx)
+	transport, loaded := transportManager.Transport(options.Server)
+	if !loaded {
+		return nil, E.New("domain resolver not found: " + options.Server)
+	}
+	return &DNSQueryOptions{
+		Transport:    transport,
+		Strategy:     C.DomainStrategy(options.Strategy),
+		DisableCache: options.DisableCache,
+		RewriteTTL:   options.RewriteTTL,
+		ClientSubnet: options.ClientSubnet.Build(netip.Prefix{}),
+	}, nil
 }
 
 type RDRCStore interface {

adapter/experimental.go

@@ -52,10 +52,6 @@ type CacheFile interface {
 	StoreGroupExpand(group string, expand bool) error
 	LoadRuleSet(tag string) *SavedBinary
 	SaveRuleSet(tag string, set *SavedBinary) error
-	LoadScript(tag string) *SavedBinary
-	SaveScript(tag string, script *SavedBinary) error
-	SurgePersistentStoreRead(key string) string
-	SurgePersistentStoreWrite(key string, value string) error
 }
 
 type SavedBinary struct {

adapter/fakeip.go

@@ -7,7 +7,7 @@ import (
 )
 
 type FakeIPStore interface {
-	Service
+	SimpleLifecycle
 	Contains(address netip.Addr) bool
 	Create(domain string, isIPv6 bool) (netip.Addr, error)
 	Lookup(address netip.Addr) (string, bool)

adapter/inbound.go

@@ -2,8 +2,6 @@ package adapter
 
 import (
 	"context"
-	"crypto/tls"
-	"net/http"
 	"net/netip"
 	"time"
 
@@ -55,13 +53,12 @@ type InboundContext struct {
 
 	// sniffer
 
-	Protocol         string
-	Domain           string
-	Client           string
-	SniffContext     any
-	PacketSniffError error
-	HTTPRequest      *http.Request
-	ClientHello      *tls.ClientHelloInfo
+	Protocol     string
+	Domain       string
+	Client       string
+	SniffContext any
+	SnifferNames []string
+	SniffError   error
 
 	// cache
 
@@ -78,7 +75,7 @@ type InboundContext struct {
 	UDPTimeout                time.Duration
 	TLSFragment               bool
 	TLSFragmentFallbackDelay  time.Duration
-	MITM                      *option.MITMRouteOptions
+	TLSRecordFragment         bool
 
 	NetworkStrategy     *C.NetworkStrategy
 	NetworkType         []C.InterfaceType
@@ -139,8 +136,7 @@ func ExtendContext(ctx context.Context) (context.Context, *InboundContext) {
 
 func OverrideContext(ctx context.Context) context.Context {
 	if metadata := ContextFrom(ctx); metadata != nil {
-		var newMetadata InboundContext
-		newMetadata = *metadata
+		newMetadata := *metadata
 		return WithContext(ctx, &newMetadata)
 	}
 	return ctx

adapter/inbound/manager.go

@@ -37,13 +37,14 @@ func NewManager(logger log.ContextLogger, registry adapter.InboundRegistry, endp
 
 func (m *Manager) Start(stage adapter.StartStage) error {
 	m.access.Lock()
-	defer m.access.Unlock()
 	if m.started && m.stage >= stage {
 		panic("already started")
 	}
 	m.started = true
 	m.stage = stage
-	for _, inbound := range m.inbounds {
+	inbounds := m.inbounds
+	m.access.Unlock()
+	for _, inbound := range inbounds {
 		err := adapter.LegacyStart(inbound, stage)
 		if err != nil {
 			return E.Cause(err, stage, " inbound/", inbound.Type(), "[", inbound.Tag(), "]")

adapter/lifecycle.go

@@ -1,8 +1,11 @@
 package adapter
 
-import (
-	E "github.com/sagernet/sing/common/exceptions"
-)
+import E "github.com/sagernet/sing/common/exceptions"
+
+type SimpleLifecycle interface {
+	Start() error
+	Close() error
+}
 
 type StartStage uint8
 
@@ -47,9 +50,6 @@ type LifecycleService interface {
 
 func Start(stage StartStage, services ...Lifecycle) error {
 	for _, service := range services {
-		if service == nil {
-			continue
-		}
 		err := service.Start(stage)
 		if err != nil {
 			return err

adapter/lifecycle_legacy.go

@@ -28,14 +28,14 @@ func LegacyStart(starter any, stage StartStage) error {
 }
 
 type lifecycleServiceWrapper struct {
-	Service
+	SimpleLifecycle
 	name string
 }
 
-func NewLifecycleService(service Service, name string) LifecycleService {
+func NewLifecycleService(service SimpleLifecycle, name string) LifecycleService {
 	return &lifecycleServiceWrapper{
-		Service: service,
-		name:    name,
+		SimpleLifecycle: service,
+		name:            name,
 	}
 }
 
@@ -44,9 +44,9 @@ func (l *lifecycleServiceWrapper) Name() string {
 }
 
 func (l *lifecycleServiceWrapper) Start(stage StartStage) error {
-	return LegacyStart(l.Service, stage)
+	return LegacyStart(l.SimpleLifecycle, stage)
 }
 
 func (l *lifecycleServiceWrapper) Close() error {
-	return l.Service.Close()
+	return l.SimpleLifecycle.Close()
 }

adapter/mitm.go

@@ -1,13 +0,0 @@
-package adapter
-
-import (
-	"context"
-	"net"
-
-	N "github.com/sagernet/sing/common/network"
-)
-
-type MITMEngine interface {
-	Lifecycle
-	NewConnection(ctx context.Context, this N.Dialer, conn net.Conn, metadata InboundContext, onClose N.CloseHandlerFunc)
-}

adapter/network.go

@@ -20,6 +20,7 @@ type NetworkManager interface {
 	DefaultOptions() NetworkOptions
 	RegisterAutoRedirectOutputMark(mark uint32) error
 	AutoRedirectOutputMark() uint32
+	AutoRedirectOutputMarkFunc() control.Func
 	NetworkMonitor() tun.NetworkUpdateMonitor
 	InterfaceMonitor() tun.DefaultInterfaceMonitor
 	PackageManager() tun.PackageManager

adapter/outbound.go

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

adapter/outbound/manager.go

@@ -30,7 +30,7 @@ type Manager struct {
 	outboundByTag           map[string]adapter.Outbound
 	dependByTag             map[string][]string
 	defaultOutbound         adapter.Outbound
-	defaultOutboundFallback adapter.Outbound
+	defaultOutboundFallback func() (adapter.Outbound, error)
 }
 
 func NewManager(logger logger.ContextLogger, registry adapter.OutboundRegistry, endpoint adapter.EndpointManager, defaultTag string) *Manager {
@@ -44,7 +44,7 @@ func NewManager(logger logger.ContextLogger, registry adapter.OutboundRegistry,
 	}
 }
 
-func (m *Manager) Initialize(defaultOutboundFallback adapter.Outbound) {
+func (m *Manager) Initialize(defaultOutboundFallback func() (adapter.Outbound, error)) {
 	m.defaultOutboundFallback = defaultOutboundFallback
 }
 
@@ -55,18 +55,31 @@ func (m *Manager) Start(stage adapter.StartStage) error {
 	}
 	m.started = true
 	m.stage = stage
-	outbounds := m.outbounds
-	m.access.Unlock()
 	if stage == adapter.StartStateStart {
 		if m.defaultTag != "" && m.defaultOutbound == nil {
 			defaultEndpoint, loaded := m.endpoint.Get(m.defaultTag)
 			if !loaded {
+				m.access.Unlock()
 				return E.New("default outbound not found: ", m.defaultTag)
 			}
 			m.defaultOutbound = defaultEndpoint
 		}
+		if m.defaultOutbound == nil {
+			directOutbound, err := m.defaultOutboundFallback()
+			if err != nil {
+				m.access.Unlock()
+				return E.Cause(err, "create direct outbound for fallback")
+			}
+			m.outbounds = append(m.outbounds, directOutbound)
+			m.outboundByTag[directOutbound.Tag()] = directOutbound
+			m.defaultOutbound = directOutbound
+		}
+		outbounds := m.outbounds
+		m.access.Unlock()
 		return m.startOutbounds(append(outbounds, common.Map(m.endpoint.Endpoints(), func(it adapter.Endpoint) adapter.Outbound { return it })...))
 	} else {
+		outbounds := m.outbounds
+		m.access.Unlock()
 		for _, outbound := range outbounds {
 			err := adapter.LegacyStart(outbound, stage)
 			if err != nil {
@@ -187,11 +200,7 @@ func (m *Manager) Outbound(tag string) (adapter.Outbound, bool) {
 func (m *Manager) Default() adapter.Outbound {
 	m.access.RLock()
 	defer m.access.RUnlock()
-	if m.defaultOutbound != nil {
-		return m.defaultOutbound
-	} else {
-		return m.defaultOutboundFallback
-	}
+	return m.defaultOutbound
 }
 
 func (m *Manager) Remove(tag string) error {

adapter/router.go

@@ -6,8 +6,10 @@ import (
 	"net"
 	"net/http"
 	"sync"
+	"time"
 
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-tun"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/ntp"
@@ -19,12 +21,12 @@ import (
 type Router interface {
 	Lifecycle
 	ConnectionRouter
-	PreMatch(metadata InboundContext) error
+	PreMatch(metadata InboundContext, context tun.DirectRouteContext, timeout time.Duration) (tun.DirectRouteDestination, error)
 	ConnectionRouterEx
 	RuleSet(tag string) (RuleSet, bool)
 	NeedWIFIState() bool
 	Rules() []Rule
-	SetTracker(tracker ConnectionTracker)
+	AppendTracker(tracker ConnectionTracker)
 	ResetNetwork()
 }
 

adapter/rule.go

@@ -11,7 +11,7 @@ type HeadlessRule interface {
 
 type Rule interface {
 	HeadlessRule
-	Service
+	SimpleLifecycle
 	Type() string
 	Action() RuleAction
 }

adapter/script.go

@@ -1,54 +0,0 @@
-package adapter
-
-import (
-	"context"
-	"net/http"
-	"sync"
-	"time"
-)
-
-type ScriptManager interface {
-	Lifecycle
-	Scripts() []Script
-	Script(name string) (Script, bool)
-	SurgeCache() *SurgeInMemoryCache
-}
-
-type SurgeInMemoryCache struct {
-	sync.RWMutex
-	Data map[string]string
-}
-
-type Script interface {
-	Type() string
-	Tag() string
-	StartContext(ctx context.Context, startContext *HTTPStartContext) error
-	PostStart() error
-	Close() error
-}
-
-type SurgeScript interface {
-	Script
-	ExecuteGeneric(ctx context.Context, scriptType string, timeout time.Duration, arguments []string) error
-	ExecuteHTTPRequest(ctx context.Context, timeout time.Duration, request *http.Request, body []byte, binaryBody bool, arguments []string) (*HTTPRequestScriptResult, error)
-	ExecuteHTTPResponse(ctx context.Context, timeout time.Duration, request *http.Request, response *http.Response, body []byte, binaryBody bool, arguments []string) (*HTTPResponseScriptResult, error)
-}
-
-type HTTPRequestScriptResult struct {
-	URL      string
-	Headers  http.Header
-	Body     []byte
-	Response *HTTPRequestScriptResponse
-}
-
-type HTTPRequestScriptResponse struct {
-	Status  int
-	Headers http.Header
-	Body    []byte
-}
-
-type HTTPResponseScriptResult struct {
-	Status  int
-	Headers http.Header
-	Body    []byte
-}

adapter/service.go

@@ -1,6 +1,27 @@
 package adapter
 
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+)
+
 type Service interface {
-	Start() error
-	Close() error
+	Lifecycle
+	Type() string
+	Tag() string
+}
+
+type ServiceRegistry interface {
+	option.ServiceOptionsRegistry
+	Create(ctx context.Context, logger log.ContextLogger, tag string, serviceType string, options any) (Service, error)
+}
+
+type ServiceManager interface {
+	Lifecycle
+	Services() []Service
+	Get(tag string) (Service, bool)
+	Remove(tag string) error
+	Create(ctx context.Context, logger log.ContextLogger, tag string, serviceType string, options any) error
 }

adapter/service/adapter.go

@@ -0,0 +1,21 @@
+package service
+
+type Adapter struct {
+	serviceType string
+	serviceTag  string
+}
+
+func NewAdapter(serviceType string, serviceTag string) Adapter {
+	return Adapter{
+		serviceType: serviceType,
+		serviceTag:  serviceTag,
+	}
+}
+
+func (a *Adapter) Type() string {
+	return a.serviceType
+}
+
+func (a *Adapter) Tag() string {
+	return a.serviceTag
+}

adapter/service/manager.go

@@ -0,0 +1,144 @@
+package service
+
+import (
+	"context"
+	"os"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/taskmonitor"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+var _ adapter.ServiceManager = (*Manager)(nil)
+
+type Manager struct {
+	logger       log.ContextLogger
+	registry     adapter.ServiceRegistry
+	access       sync.Mutex
+	started      bool
+	stage        adapter.StartStage
+	services     []adapter.Service
+	serviceByTag map[string]adapter.Service
+}
+
+func NewManager(logger log.ContextLogger, registry adapter.ServiceRegistry) *Manager {
+	return &Manager{
+		logger:       logger,
+		registry:     registry,
+		serviceByTag: make(map[string]adapter.Service),
+	}
+}
+
+func (m *Manager) Start(stage adapter.StartStage) error {
+	m.access.Lock()
+	if m.started && m.stage >= stage {
+		panic("already started")
+	}
+	m.started = true
+	m.stage = stage
+	services := m.services
+	m.access.Unlock()
+	for _, service := range services {
+		err := adapter.LegacyStart(service, stage)
+		if err != nil {
+			return E.Cause(err, stage, " service/", service.Type(), "[", service.Tag(), "]")
+		}
+	}
+	return nil
+}
+
+func (m *Manager) Close() error {
+	m.access.Lock()
+	defer m.access.Unlock()
+	if !m.started {
+		return nil
+	}
+	m.started = false
+	services := m.services
+	m.services = nil
+	monitor := taskmonitor.New(m.logger, C.StopTimeout)
+	var err error
+	for _, service := range services {
+		monitor.Start("close service/", service.Type(), "[", service.Tag(), "]")
+		err = E.Append(err, service.Close(), func(err error) error {
+			return E.Cause(err, "close service/", service.Type(), "[", service.Tag(), "]")
+		})
+		monitor.Finish()
+	}
+	return nil
+}
+
+func (m *Manager) Services() []adapter.Service {
+	m.access.Lock()
+	defer m.access.Unlock()
+	return m.services
+}
+
+func (m *Manager) Get(tag string) (adapter.Service, bool) {
+	m.access.Lock()
+	service, found := m.serviceByTag[tag]
+	m.access.Unlock()
+	return service, found
+}
+
+func (m *Manager) Remove(tag string) error {
+	m.access.Lock()
+	service, found := m.serviceByTag[tag]
+	if !found {
+		m.access.Unlock()
+		return os.ErrInvalid
+	}
+	delete(m.serviceByTag, tag)
+	index := common.Index(m.services, func(it adapter.Service) bool {
+		return it == service
+	})
+	if index == -1 {
+		panic("invalid service index")
+	}
+	m.services = append(m.services[:index], m.services[index+1:]...)
+	started := m.started
+	m.access.Unlock()
+	if started {
+		return service.Close()
+	}
+	return nil
+}
+
+func (m *Manager) Create(ctx context.Context, logger log.ContextLogger, tag string, serviceType string, options any) error {
+	service, err := m.registry.Create(ctx, logger, tag, serviceType, options)
+	if err != nil {
+		return err
+	}
+	m.access.Lock()
+	defer m.access.Unlock()
+	if m.started {
+		for _, stage := range adapter.ListStartStages {
+			err = adapter.LegacyStart(service, stage)
+			if err != nil {
+				return E.Cause(err, stage, " service/", service.Type(), "[", service.Tag(), "]")
+			}
+		}
+	}
+	if existsService, loaded := m.serviceByTag[tag]; loaded {
+		if m.started {
+			err = existsService.Close()
+			if err != nil {
+				return E.Cause(err, "close service/", existsService.Type(), "[", existsService.Tag(), "]")
+			}
+		}
+		existsIndex := common.Index(m.services, func(it adapter.Service) bool {
+			return it == existsService
+		})
+		if existsIndex == -1 {
+			panic("invalid service index")
+		}
+		m.services = append(m.services[:existsIndex], m.services[existsIndex+1:]...)
+	}
+	m.services = append(m.services, service)
+	m.serviceByTag[tag] = service
+	return nil
+}

adapter/service/registry.go

@@ -0,0 +1,72 @@
+package service
+
+import (
+	"context"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type ConstructorFunc[T any] func(ctx context.Context, logger log.ContextLogger, tag string, options T) (adapter.Service, error)
+
+func Register[Options any](registry *Registry, outboundType string, constructor ConstructorFunc[Options]) {
+	registry.register(outboundType, func() any {
+		return new(Options)
+	}, func(ctx context.Context, logger log.ContextLogger, tag string, rawOptions any) (adapter.Service, error) {
+		var options *Options
+		if rawOptions != nil {
+			options = rawOptions.(*Options)
+		}
+		return constructor(ctx, logger, tag, common.PtrValueOrDefault(options))
+	})
+}
+
+var _ adapter.ServiceRegistry = (*Registry)(nil)
+
+type (
+	optionsConstructorFunc func() any
+	constructorFunc        func(ctx context.Context, logger log.ContextLogger, tag string, options any) (adapter.Service, error)
+)
+
+type Registry struct {
+	access      sync.Mutex
+	optionsType map[string]optionsConstructorFunc
+	constructor map[string]constructorFunc
+}
+
+func NewRegistry() *Registry {
+	return &Registry{
+		optionsType: make(map[string]optionsConstructorFunc),
+		constructor: make(map[string]constructorFunc),
+	}
+}
+
+func (m *Registry) CreateOptions(outboundType string) (any, bool) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	optionsConstructor, loaded := m.optionsType[outboundType]
+	if !loaded {
+		return nil, false
+	}
+	return optionsConstructor(), true
+}
+
+func (m *Registry) Create(ctx context.Context, logger log.ContextLogger, tag string, outboundType string, options any) (adapter.Service, error) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	constructor, loaded := m.constructor[outboundType]
+	if !loaded {
+		return nil, E.New("outbound type not found: " + outboundType)
+	}
+	return constructor(ctx, logger, tag, options)
+}
+
+func (m *Registry) register(outboundType string, optionsConstructor optionsConstructorFunc, constructor constructorFunc) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	m.optionsType[outboundType] = optionsConstructor
+	m.constructor[outboundType] = constructor
+}

adapter/ssm.go

@@ -0,0 +1,18 @@
+package adapter
+
+import (
+	"net"
+
+	N "github.com/sagernet/sing/common/network"
+)
+
+type ManagedSSMServer interface {
+	Inbound
+	SetTracker(tracker SSMTracker)
+	UpdateUsers(users []string, uPSKs []string) error
+}
+
+type SSMTracker interface {
+	TrackConnection(conn net.Conn, metadata InboundContext) net.Conn
+	TrackPacketConnection(conn N.PacketConn, metadata InboundContext) N.PacketConn
+}

adapter/time.go

@@ -3,6 +3,6 @@ package adapter
 import "time"
 
 type TimeService interface {
-	Service
+	SimpleLifecycle
 	TimeFunc() func() time.Time
 }

adapter/upstream_legacy.go

@@ -78,8 +78,8 @@ func (w *myUpstreamHandlerWrapper) NewError(ctx context.Context, err error) {
 // Deprecated: removed
 func UpstreamMetadata(metadata InboundContext) M.Metadata {
 	return M.Metadata{
-		Source:      metadata.Source,
-		Destination: metadata.Destination,
+		Source:      metadata.Source.Unwrap(),
+		Destination: metadata.Destination.Unwrap(),
 	}
 }
 

box.go

@@ -12,6 +12,7 @@ import (
 	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/inbound"
 	"github.com/sagernet/sing-box/adapter/outbound"
+	boxService "github.com/sagernet/sing-box/adapter/service"
 	"github.com/sagernet/sing-box/common/certificate"
 	"github.com/sagernet/sing-box/common/dialer"
 	"github.com/sagernet/sing-box/common/taskmonitor"
@@ -23,11 +24,9 @@ import (
 	"github.com/sagernet/sing-box/experimental/cachefile"
 	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/mitm"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-box/protocol/direct"
 	"github.com/sagernet/sing-box/route"
-	"github.com/sagernet/sing-box/script"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"
@@ -36,24 +35,23 @@ import (
 	"github.com/sagernet/sing/service/pause"
 )
 
-var _ adapter.Service = (*Box)(nil)
+var _ adapter.SimpleLifecycle = (*Box)(nil)
 
 type Box struct {
-	createdAt    time.Time
-	logFactory   log.Factory
-	logger       log.ContextLogger
-	network      *route.NetworkManager
-	endpoint     *endpoint.Manager
-	inbound      *inbound.Manager
-	outbound     *outbound.Manager
-	dnsTransport *dns.TransportManager
-	dnsRouter    *dns.Router
-	connection   *route.ConnectionManager
-	router       *route.Router
-	script       *script.Manager
-	mitm         adapter.MITMEngine //*mitm.Engine
-	services     []adapter.LifecycleService
-	done         chan struct{}
+	createdAt       time.Time
+	logFactory      log.Factory
+	logger          log.ContextLogger
+	network         *route.NetworkManager
+	endpoint        *endpoint.Manager
+	inbound         *inbound.Manager
+	outbound        *outbound.Manager
+	service         *boxService.Manager
+	dnsTransport    *dns.TransportManager
+	dnsRouter       *dns.Router
+	connection      *route.ConnectionManager
+	router          *route.Router
+	internalService []adapter.LifecycleService
+	done            chan struct{}
 }
 
 type Options struct {
@@ -68,6 +66,7 @@ func Context(
 	outboundRegistry adapter.OutboundRegistry,
 	endpointRegistry adapter.EndpointRegistry,
 	dnsTransportRegistry adapter.DNSTransportRegistry,
+	serviceRegistry adapter.ServiceRegistry,
 ) context.Context {
 	if service.FromContext[option.InboundOptionsRegistry](ctx) == nil ||
 		service.FromContext[adapter.InboundRegistry](ctx) == nil {
@@ -88,6 +87,10 @@ func Context(
 		ctx = service.ContextWith[option.DNSTransportOptionsRegistry](ctx, dnsTransportRegistry)
 		ctx = service.ContextWith[adapter.DNSTransportRegistry](ctx, dnsTransportRegistry)
 	}
+	if service.FromContext[adapter.ServiceRegistry](ctx) == nil {
+		ctx = service.ContextWith[option.ServiceOptionsRegistry](ctx, serviceRegistry)
+		ctx = service.ContextWith[adapter.ServiceRegistry](ctx, serviceRegistry)
+	}
 	return ctx
 }
 
@@ -103,6 +106,7 @@ func New(options Options) (*Box, error) {
 	inboundRegistry := service.FromContext[adapter.InboundRegistry](ctx)
 	outboundRegistry := service.FromContext[adapter.OutboundRegistry](ctx)
 	dnsTransportRegistry := service.FromContext[adapter.DNSTransportRegistry](ctx)
+	serviceRegistry := service.FromContext[adapter.ServiceRegistry](ctx)
 
 	if endpointRegistry == nil {
 		return nil, E.New("missing endpoint registry in context")
@@ -113,6 +117,12 @@ func New(options Options) (*Box, error) {
 	if outboundRegistry == nil {
 		return nil, E.New("missing outbound registry in context")
 	}
+	if dnsTransportRegistry == nil {
+		return nil, E.New("missing DNS transport registry in context")
+	}
+	if serviceRegistry == nil {
+		return nil, E.New("missing service registry in context")
+	}
 
 	ctx = pause.WithDefaultManager(ctx)
 	experimentalOptions := common.PtrValueOrDefault(options.Experimental)
@@ -146,13 +156,19 @@ func New(options Options) (*Box, error) {
 		return nil, E.Cause(err, "create log factory")
 	}
 
-	var services []adapter.LifecycleService
-	certificateStore, err := certificate.NewStore(ctx, logFactory.NewLogger("certificate"), common.PtrValueOrDefault(options.Certificate))
-	if err != nil {
-		return nil, err
+	var internalServices []adapter.LifecycleService
+	certificateOptions := common.PtrValueOrDefault(options.Certificate)
+	if C.IsAndroid || certificateOptions.Store != "" && certificateOptions.Store != C.CertificateStoreSystem ||
+		len(certificateOptions.Certificate) > 0 ||
+		len(certificateOptions.CertificatePath) > 0 ||
+		len(certificateOptions.CertificateDirectoryPath) > 0 {
+		certificateStore, err := certificate.NewStore(ctx, logFactory.NewLogger("certificate"), certificateOptions)
+		if err != nil {
+			return nil, err
+		}
+		service.MustRegister[adapter.CertificateStore](ctx, certificateStore)
+		internalServices = append(internalServices, certificateStore)
 	}
-	service.MustRegister[adapter.CertificateStore](ctx, certificateStore)
-	services = append(services, certificateStore)
 
 	routeOptions := common.PtrValueOrDefault(options.Route)
 	dnsOptions := common.PtrValueOrDefault(options.DNS)
@@ -160,10 +176,12 @@ func New(options Options) (*Box, error) {
 	inboundManager := inbound.NewManager(logFactory.NewLogger("inbound"), inboundRegistry, endpointManager)
 	outboundManager := outbound.NewManager(logFactory.NewLogger("outbound"), outboundRegistry, endpointManager, routeOptions.Final)
 	dnsTransportManager := dns.NewTransportManager(logFactory.NewLogger("dns/transport"), dnsTransportRegistry, outboundManager, dnsOptions.Final)
+	serviceManager := boxService.NewManager(logFactory.NewLogger("service"), serviceRegistry)
 	service.MustRegister[adapter.EndpointManager](ctx, endpointManager)
 	service.MustRegister[adapter.InboundManager](ctx, inboundManager)
 	service.MustRegister[adapter.OutboundManager](ctx, outboundManager)
 	service.MustRegister[adapter.DNSTransportManager](ctx, dnsTransportManager)
+	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)
@@ -171,7 +189,7 @@ func New(options Options) (*Box, error) {
 		return nil, E.Cause(err, "initialize network manager")
 	}
 	service.MustRegister[adapter.NetworkManager](ctx, networkManager)
-	connectionManager := route.NewConnectionManager(ctx, logFactory.NewLogger("connection"))
+	connectionManager := route.NewConnectionManager(logFactory.NewLogger("connection"))
 	service.MustRegister[adapter.ConnectionManager](ctx, connectionManager)
 	router := route.NewRouter(ctx, logFactory, routeOptions, dnsOptions)
 	service.MustRegister[adapter.Router](ctx, router)
@@ -179,8 +197,8 @@ func New(options Options) (*Box, error) {
 	if err != nil {
 		return nil, E.Cause(err, "initialize router")
 	}
-	var timeService *tls.TimeServiceWrapper
 	ntpOptions := common.PtrValueOrDefault(options.NTP)
+	var timeService *tls.TimeServiceWrapper
 	if ntpOptions.Enabled {
 		timeService = new(tls.TimeServiceWrapper)
 		service.MustRegister[ntp.TimeService](ctx, timeService)
@@ -278,27 +296,41 @@ func New(options Options) (*Box, error) {
 			return nil, E.Cause(err, "initialize outbound[", i, "]")
 		}
 	}
-	outboundManager.Initialize(common.Must1(
-		direct.NewOutbound(
+	for i, serviceOptions := range options.Services {
+		var tag string
+		if serviceOptions.Tag != "" {
+			tag = serviceOptions.Tag
+		} else {
+			tag = F.ToString(i)
+		}
+		err = serviceManager.Create(
+			ctx,
+			logFactory.NewLogger(F.ToString("service/", serviceOptions.Type, "[", tag, "]")),
+			tag,
+			serviceOptions.Type,
+			serviceOptions.Options,
+		)
+		if err != nil {
+			return nil, E.Cause(err, "initialize service[", i, "]")
+		}
+	}
+	outboundManager.Initialize(func() (adapter.Outbound, error) {
+		return direct.NewOutbound(
 			ctx,
 			router,
 			logFactory.NewLogger("outbound/direct"),
 			"direct",
 			option.DirectOutboundOptions{},
-		),
-	))
-	dnsTransportManager.Initialize(common.Must1(
-		local.NewTransport(
+		)
+	})
+	dnsTransportManager.Initialize(func() (adapter.DNSTransport, error) {
+		return local.NewTransport(
 			ctx,
 			logFactory.NewLogger("dns/local"),
 			"local",
 			option.LocalDNSServerOptions{},
-		)))
-	scriptManager, err := script.NewManager(ctx, logFactory, options.Scripts)
-	if err != nil {
-		return nil, E.Cause(err, "initialize script manager")
-	}
-	service.MustRegister[adapter.ScriptManager](ctx, scriptManager)
+		)
+	})
 	if platformInterface != nil {
 		err = platformInterface.Initialize(networkManager)
 		if err != nil {
@@ -308,7 +340,7 @@ func New(options Options) (*Box, error) {
 	if needCacheFile {
 		cacheFile := cachefile.New(ctx, common.PtrValueOrDefault(experimentalOptions.CacheFile))
 		service.MustRegister[adapter.CacheFile](ctx, cacheFile)
-		services = append(services, cacheFile)
+		internalServices = append(internalServices, cacheFile)
 	}
 	if needClashAPI {
 		clashAPIOptions := common.PtrValueOrDefault(experimentalOptions.ClashAPI)
@@ -317,9 +349,9 @@ func New(options Options) (*Box, error) {
 		if err != nil {
 			return nil, E.Cause(err, "create clash-server")
 		}
-		router.SetTracker(clashServer)
+		router.AppendTracker(clashServer)
 		service.MustRegister[adapter.ClashServer](ctx, clashServer)
-		services = append(services, clashServer)
+		internalServices = append(internalServices, clashServer)
 	}
 	if needV2RayAPI {
 		v2rayServer, err := experimental.NewV2RayServer(logFactory.NewLogger("v2ray-api"), common.PtrValueOrDefault(experimentalOptions.V2RayAPI))
@@ -327,8 +359,8 @@ func New(options Options) (*Box, error) {
 			return nil, E.Cause(err, "create v2ray-server")
 		}
 		if v2rayServer.StatsService() != nil {
-			router.SetTracker(v2rayServer.StatsService())
-			services = append(services, v2rayServer)
+			router.AppendTracker(v2rayServer.StatsService())
+			internalServices = append(internalServices, v2rayServer)
 			service.MustRegister[adapter.V2RayServer](ctx, v2rayServer)
 		}
 	}
@@ -346,34 +378,23 @@ func New(options Options) (*Box, error) {
 			WriteToSystem: ntpOptions.WriteToSystem,
 		})
 		timeService.TimeService = ntpService
-		services = append(services, adapter.NewLifecycleService(ntpService, "ntp service"))
-	}
-	mitmOptions := common.PtrValueOrDefault(options.MITM)
-	var mitmEngine adapter.MITMEngine
-	if mitmOptions.Enabled {
-		engine, err := mitm.NewEngine(ctx, logFactory.NewLogger("mitm"), mitmOptions)
-		if err != nil {
-			return nil, E.Cause(err, "create MITM engine")
-		}
-		service.MustRegister[adapter.MITMEngine](ctx, engine)
-		mitmEngine = engine
+		internalServices = append(internalServices, adapter.NewLifecycleService(ntpService, "ntp service"))
 	}
 	return &Box{
-		network:      networkManager,
-		endpoint:     endpointManager,
-		inbound:      inboundManager,
-		outbound:     outboundManager,
-		dnsTransport: dnsTransportManager,
-		dnsRouter:    dnsRouter,
-		connection:   connectionManager,
-		router:       router,
-		script:       scriptManager,
-		mitm:         mitmEngine,
-		createdAt:    createdAt,
-		logFactory:   logFactory,
-		logger:       logFactory.Logger(),
-		services:     services,
-		done:         make(chan struct{}),
+		network:         networkManager,
+		endpoint:        endpointManager,
+		inbound:         inboundManager,
+		outbound:        outboundManager,
+		dnsTransport:    dnsTransportManager,
+		service:         serviceManager,
+		dnsRouter:       dnsRouter,
+		connection:      connectionManager,
+		router:          router,
+		createdAt:       createdAt,
+		logFactory:      logFactory,
+		logger:          logFactory.Logger(),
+		internalService: internalServices,
+		done:            make(chan struct{}),
 	}, nil
 }
 
@@ -423,15 +444,15 @@ func (s *Box) preStart() error {
 	if err != nil {
 		return E.Cause(err, "start logger")
 	}
-	err = adapter.StartNamed(adapter.StartStateInitialize, s.services) // cache-file clash-api v2ray-api
+	err = adapter.StartNamed(adapter.StartStateInitialize, s.internalService) // cache-file clash-api v2ray-api
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateInitialize, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.script, s.mitm, s.outbound, s.inbound, s.endpoint)
+	err = adapter.Start(adapter.StartStateInitialize, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateStart, s.outbound, s.dnsTransport, s.dnsRouter, s.network, s.connection, s.router, s.script, s.mitm)
+	err = adapter.Start(adapter.StartStateStart, s.outbound, s.dnsTransport, s.dnsRouter, s.network, s.connection, s.router)
 	if err != nil {
 		return err
 	}
@@ -443,31 +464,27 @@ func (s *Box) start() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.StartNamed(adapter.StartStateStart, s.services)
+	err = adapter.StartNamed(adapter.StartStateStart, s.internalService)
 	if err != nil {
 		return err
 	}
-	err = s.inbound.Start(adapter.StartStateStart)
+	err = adapter.Start(adapter.StartStateStart, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateStart, s.endpoint)
+	err = adapter.Start(adapter.StartStatePostStart, s.outbound, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStatePostStart, s.outbound, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.script, s.mitm, s.inbound, s.endpoint)
+	err = adapter.StartNamed(adapter.StartStatePostStart, s.internalService)
 	if err != nil {
 		return err
 	}
-	err = adapter.StartNamed(adapter.StartStatePostStart, s.services)
+	err = adapter.Start(adapter.StartStateStarted, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.outbound, s.inbound, s.endpoint, s.service)
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateStarted, s.network, s.dnsTransport, s.dnsRouter, s.connection, s.router, s.script, s.mitm, s.outbound, s.inbound, s.endpoint)
-	if err != nil {
-		return err
-	}
-	err = adapter.StartNamed(adapter.StartStateStarted, s.services)
+	err = adapter.StartNamed(adapter.StartStateStarted, s.internalService)
 	if err != nil {
 		return err
 	}
@@ -482,9 +499,9 @@ func (s *Box) Close() error {
 		close(s.done)
 	}
 	err := common.Close(
-		s.inbound, s.outbound, s.endpoint, s.mitm, s.script, s.router, s.connection, s.dnsRouter, s.dnsTransport, s.network,
+		s.service, s.endpoint, s.inbound, s.outbound, s.router, s.connection, s.dnsRouter, s.dnsTransport, s.network,
 	)
-	for _, lifecycleService := range s.services {
+	for _, lifecycleService := range s.internalService {
 		err = E.Append(err, lifecycleService.Close(), func(err error) error {
 			return E.Cause(err, "close ", lifecycleService.Name())
 		})

cmd/internal/app_store_connect/main.go

@@ -105,7 +105,7 @@ func publishTestflight(ctx context.Context) error {
 		return err
 	}
 	tag := tagVersion.VersionString()
-	client := createClient(10 * time.Minute)
+	client := createClient(20 * time.Minute)
 
 	log.Info(tag, " list build IDs")
 	buildIDsResponse, _, err := client.TestFlight.ListBuildIDsForBetaGroup(ctx, groupID, nil)
@@ -145,7 +145,7 @@ func publishTestflight(ctx context.Context) error {
 				return err
 			}
 			build := builds.Data[0]
-			if common.Contains(buildIDs, build.ID) || time.Since(build.Attributes.UploadedDate.Time) > 5*time.Minute {
+			if 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
@@ -177,7 +177,7 @@ func publishTestflight(ctx context.Context) error {
 			}
 			log.Info(string(platform), " ", tag, " publish")
 			response, err := client.TestFlight.AddBuildsToBetaGroup(ctx, groupID, []string{build.ID})
-			if response != nil && response.StatusCode == http.StatusUnprocessableEntity {
+			if response != nil && (response.StatusCode == http.StatusUnprocessableEntity || response.StatusCode == http.StatusNotFound) {
 				log.Info("waiting for process")
 				time.Sleep(15 * time.Second)
 				continue

cmd/internal/build_libbox/main.go

@@ -16,15 +16,17 @@ import (
 )
 
 var (
-	debugEnabled bool
-	target       string
-	platform     string
+	debugEnabled  bool
+	target        string
+	platform      string
+	withTailscale bool
 )
 
 func init() {
 	flag.BoolVar(&debugEnabled, "debug", false, "enable debug")
 	flag.StringVar(&target, "target", "android", "target platform")
 	flag.StringVar(&platform, "platform", "", "specify platform")
+	flag.BoolVar(&withTailscale, "with-tailscale", false, "build tailscale for iOS and tvOS")
 }
 
 func main() {
@@ -44,8 +46,9 @@ var (
 	sharedFlags []string
 	debugFlags  []string
 	sharedTags  []string
-	iosTags     []string
+	macOSTags   []string
 	memcTags    []string
+	notMemcTags []string
 	debugTags   []string
 )
 
@@ -56,12 +59,13 @@ func init() {
 	if err != nil {
 		currentTag = "unknown"
 	}
-	sharedFlags = append(sharedFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=")
-	debugFlags = append(debugFlags, "-ldflags", "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
+	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_script")
-	iosTags = append(iosTags, "with_dhcp", "with_low_memory", "with_conntrack")
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api", "with_conntrack")
+	macOSTags = append(macOSTags, "with_dhcp")
 	memcTags = append(memcTags, "with_tailscale")
+	notMemcTags = append(notMemcTags, "with_low_memory")
 	debugTags = append(debugTags, "debug")
 }
 
@@ -103,8 +107,10 @@ func buildAndroid() {
 	}
 
 	if !debugEnabled {
+		// sharedFlags[3] = sharedFlags[3] + " -checklinkname=0"
 		args = append(args, sharedFlags...)
 	} else {
+		// debugFlags[1] = debugFlags[1] + " -checklinkname=0"
 		args = append(args, debugFlags...)
 	}
 
@@ -151,7 +157,12 @@ func buildApple() {
 		"-v",
 		"-target", bindTarget,
 		"-libname=box",
-		"-tags-macos=" + strings.Join(memcTags, ","),
+		"-tags-not-macos=with_low_memory",
+	}
+	if !withTailscale {
+		args = append(args, "-tags-macos="+strings.Join(append(macOSTags, memcTags...), ","))
+	} else {
+		args = append(args, "-tags-macos="+strings.Join(macOSTags, ","))
 	}
 
 	if !debugEnabled {
@@ -160,7 +171,10 @@ func buildApple() {
 		args = append(args, debugFlags...)
 	}
 
-	tags := append(sharedTags, iosTags...)
+	tags := sharedTags
+	if withTailscale {
+		tags = append(tags, memcTags...)
+	}
 	if debugEnabled {
 		tags = append(tags, debugTags...)
 	}

cmd/internal/read_tag/main.go

@@ -5,40 +5,49 @@ import (
 	"os"
 
 	"github.com/sagernet/sing-box/cmd/internal/build_shared"
+	"github.com/sagernet/sing-box/common/badversion"
 	"github.com/sagernet/sing-box/log"
 )
 
-var nightly bool
+var (
+	flagRunInCI    bool
+	flagRunNightly bool
+)
 
 func init() {
-	flag.BoolVar(&nightly, "nightly", false, "Print nightly tag")
+	flag.BoolVar(&flagRunInCI, "ci", false, "Run in CI")
+	flag.BoolVar(&flagRunNightly, "nightly", false, "Run nightly")
 }
 
 func main() {
 	flag.Parse()
-	if nightly {
-		version, err := build_shared.ReadTagVersionRev()
+	var (
+		versionStr string
+		err        error
+	)
+	if flagRunNightly {
+		var version badversion.Version
+		version, err = build_shared.ReadTagVersion()
+		if err == nil {
+			versionStr = version.String()
+		}
+	} else {
+		versionStr, err = build_shared.ReadTag()
+	}
+	if flagRunInCI {
 		if err != nil {
 			log.Fatal(err)
 		}
-		var versionStr string
-		if version.PreReleaseIdentifier != "" {
-			versionStr = version.VersionString() + "-nightly"
-		} else {
-			version.Patch++
-			versionStr = version.VersionString() + "-nightly"
-		}
 		err = setGitHubEnv("version", versionStr)
 		if err != nil {
 			log.Fatal(err)
 		}
 	} else {
-		tag, err := build_shared.ReadTag()
 		if err != nil {
 			log.Error(err)
 			os.Stdout.WriteString("unknown\n")
 		} else {
-			os.Stdout.WriteString(tag + "\n")
+			os.Stdout.WriteString(versionStr + "\n")
 		}
 	}
 }

cmd/internal/tun_bench/main.go

@@ -0,0 +1,284 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/netip"
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+	"time"
+
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/include"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/json"
+	"github.com/sagernet/sing/common/shell"
+)
+
+var iperf3Path string
+
+func main() {
+	err := main0()
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func main0() error {
+	err := shell.Exec("sudo", "ls").Run()
+	if err != nil {
+		return err
+	}
+	results, err := runTests()
+	if err != nil {
+		return err
+	}
+	encoder := json.NewEncoder(os.Stdout)
+	encoder.SetIndent("", "  ")
+	return encoder.Encode(results)
+}
+
+func runTests() ([]TestResult, error) {
+	boxPaths := []string{
+		os.ExpandEnv("$HOME/Downloads/sing-box-1.11.15-darwin-arm64/sing-box"),
+		//"/Users/sekai/Downloads/sing-box-1.11.15-linux-arm64/sing-box",
+		"./sing-box",
+	}
+	stacks := []string{
+		"gvisor",
+		"system",
+	}
+	mtus := []int{
+		1500,
+		4064,
+		// 16384,
+		// 32768,
+		// 49152,
+		65535,
+	}
+	flagList := [][]string{
+		{},
+	}
+	var results []TestResult
+	for _, boxPath := range boxPaths {
+		for _, stack := range stacks {
+			for _, mtu := range mtus {
+				if strings.HasPrefix(boxPath, ".") {
+					for _, flags := range flagList {
+						result, err := testOnce(boxPath, stack, mtu, false, flags)
+						if err != nil {
+							return nil, err
+						}
+						results = append(results, *result)
+					}
+				} else {
+					result, err := testOnce(boxPath, stack, mtu, false, nil)
+					if err != nil {
+						return nil, err
+					}
+					results = append(results, *result)
+				}
+			}
+		}
+	}
+	return results, nil
+}
+
+type TestResult struct {
+	BoxPath       string   `json:"box_path"`
+	Stack         string   `json:"stack"`
+	MTU           int      `json:"mtu"`
+	Flags         []string `json:"flags"`
+	MultiThread   bool     `json:"multi_thread"`
+	UploadSpeed   string   `json:"upload_speed"`
+	DownloadSpeed string   `json:"download_speed"`
+}
+
+func testOnce(boxPath string, stackName string, mtu int, multiThread bool, flags []string) (result *TestResult, err error) {
+	testAddress := netip.MustParseAddr("1.1.1.1")
+	testConfig := option.Options{
+		Inbounds: []option.Inbound{
+			{
+				Type: C.TypeTun,
+				Options: &option.TunInboundOptions{
+					Address:      []netip.Prefix{netip.MustParsePrefix("172.18.0.1/30")},
+					AutoRoute:    true,
+					MTU:          uint32(mtu),
+					Stack:        stackName,
+					RouteAddress: []netip.Prefix{netip.PrefixFrom(testAddress, testAddress.BitLen())},
+				},
+			},
+		},
+		Route: &option.RouteOptions{
+			Rules: []option.Rule{
+				{
+					Type: C.RuleTypeDefault,
+					DefaultOptions: option.DefaultRule{
+						RawDefaultRule: option.RawDefaultRule{
+							IPCIDR: []string{testAddress.String()},
+						},
+						RuleAction: option.RuleAction{
+							Action: C.RuleActionTypeRouteOptions,
+							RouteOptionsOptions: option.RouteOptionsActionOptions{
+								OverrideAddress: "127.0.0.1",
+							},
+						},
+					},
+				},
+			},
+			AutoDetectInterface: true,
+		},
+	}
+	ctx := include.Context(context.Background())
+	tempConfig, err := os.CreateTemp("", "tun-bench-*.json")
+	if err != nil {
+		return
+	}
+	defer os.Remove(tempConfig.Name())
+	encoder := json.NewEncoderContext(ctx, tempConfig)
+	encoder.SetIndent("", "  ")
+	err = encoder.Encode(testConfig)
+	if err != nil {
+		return nil, E.Cause(err, "encode test config")
+	}
+	tempConfig.Close()
+	var sudoArgs []string
+	if len(flags) > 0 {
+		sudoArgs = append(sudoArgs, "env")
+		sudoArgs = append(sudoArgs, flags...)
+	}
+	sudoArgs = append(sudoArgs, boxPath, "run", "-c", tempConfig.Name())
+	boxProcess := shell.Exec("sudo", sudoArgs...)
+	boxProcess.Stdout = &stderrWriter{}
+	boxProcess.Stderr = io.Discard
+	err = boxProcess.Start()
+	if err != nil {
+		return
+	}
+
+	if C.IsDarwin {
+		iperf3Path, err = exec.LookPath("iperf3-darwin")
+	} else {
+		iperf3Path, err = exec.LookPath("iperf3")
+	}
+	if err != nil {
+		return
+	}
+	serverProcess := shell.Exec(iperf3Path, "-s")
+	serverProcess.Stdout = io.Discard
+	serverProcess.Stderr = io.Discard
+	err = serverProcess.Start()
+	if err != nil {
+		return nil, E.Cause(err, "start iperf3 server")
+	}
+
+	time.Sleep(time.Second)
+
+	args := []string{"-c", testAddress.String()}
+	if multiThread {
+		args = append(args, "-P", "10")
+	}
+
+	uploadProcess := shell.Exec(iperf3Path, args...)
+	output, err := uploadProcess.Read()
+	if err != nil {
+		boxProcess.Process.Signal(syscall.SIGKILL)
+		serverProcess.Process.Signal(syscall.SIGKILL)
+		println(output)
+		return
+	}
+
+	uploadResult := common.SubstringBeforeLast(output, "iperf Done.")
+	uploadResult = common.SubstringBeforeLast(uploadResult, "sender")
+	uploadResult = common.SubstringBeforeLast(uploadResult, "bits/sec")
+	uploadResult = common.SubstringAfterLast(uploadResult, "Bytes")
+	uploadResult = strings.ReplaceAll(uploadResult, " ", "")
+
+	result = &TestResult{
+		BoxPath:     boxPath,
+		Stack:       stackName,
+		MTU:         mtu,
+		Flags:       flags,
+		MultiThread: multiThread,
+		UploadSpeed: uploadResult,
+	}
+
+	downloadProcess := shell.Exec(iperf3Path, append(args, "-R")...)
+	output, err = downloadProcess.Read()
+	if err != nil {
+		boxProcess.Process.Signal(syscall.SIGKILL)
+		serverProcess.Process.Signal(syscall.SIGKILL)
+		println(output)
+		return
+	}
+
+	downloadResult := common.SubstringBeforeLast(output, "iperf Done.")
+	downloadResult = common.SubstringBeforeLast(downloadResult, "receiver")
+	downloadResult = common.SubstringBeforeLast(downloadResult, "bits/sec")
+	downloadResult = common.SubstringAfterLast(downloadResult, "Bytes")
+	downloadResult = strings.ReplaceAll(downloadResult, " ", "")
+
+	result.DownloadSpeed = downloadResult
+
+	printArgs := []any{boxPath, stackName, mtu, "upload", uploadResult, "download", downloadResult}
+	if len(flags) > 0 {
+		printArgs = append(printArgs, "flags", strings.Join(flags, " "))
+	}
+	if multiThread {
+		printArgs = append(printArgs, "(-P 10)")
+	}
+	fmt.Println(printArgs...)
+	err = boxProcess.Process.Signal(syscall.SIGTERM)
+	if err != nil {
+		return
+	}
+
+	err = serverProcess.Process.Signal(syscall.SIGTERM)
+	if err != nil {
+		return
+	}
+
+	boxDone := make(chan struct{})
+	go func() {
+		boxProcess.Cmd.Wait()
+		close(boxDone)
+	}()
+
+	serverDone := make(chan struct{})
+	go func() {
+		serverProcess.Process.Wait()
+		close(serverDone)
+	}()
+
+	select {
+	case <-boxDone:
+	case <-time.After(2 * time.Second):
+		boxProcess.Process.Kill()
+	case <-time.After(4 * time.Second):
+		println("box process did not close!")
+		os.Exit(1)
+	}
+
+	select {
+	case <-serverDone:
+	case <-time.After(2 * time.Second):
+		serverProcess.Process.Kill()
+	case <-time.After(4 * time.Second):
+		println("server process did not close!")
+		os.Exit(1)
+	}
+
+	return
+}
+
+type stderrWriter struct{}
+
+func (w *stderrWriter) Write(p []byte) (n int, err error) {
+	return os.Stderr.Write(p)
+}

cmd/sing-box/cmd.go

@@ -7,7 +7,6 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/include"
 	"github.com/sagernet/sing-box/log"
@@ -68,6 +67,5 @@ func preRun(cmd *cobra.Command, args []string) {
 	if len(configPaths) == 0 && len(configDirectories) == 0 {
 		configPaths = append(configPaths, "config.json")
 	}
-	globalCtx = service.ContextWith(globalCtx, deprecated.NewStderrManager(log.StdLogger()))
-	globalCtx = box.Context(globalCtx, include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry(), include.DNSTransportRegistry())
+	globalCtx = include.Context(service.ContextWith(globalCtx, deprecated.NewStderrManager(log.StdLogger())))
 }

cmd/sing-box/cmd_generate_ca.go

@@ -1,121 +0,0 @@
-package main
-
-import (
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/sha1"
-	"crypto/x509"
-	"crypto/x509/pkix"
-	"encoding/asn1"
-	"encoding/base64"
-	"encoding/hex"
-	"encoding/pem"
-	"math/big"
-	"os"
-	"path/filepath"
-	"strings"
-	"time"
-
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing/common/json"
-
-	"github.com/spf13/cobra"
-	"software.sslmate.com/src/go-pkcs12"
-)
-
-var (
-	flagGenerateCAName           string
-	flagGenerateCAPKCS12Password string
-	flagGenerateOutput           string
-)
-
-var commandGenerateCAKeyPair = &cobra.Command{
-	Use:   "ca-keypair",
-	Short: "Generate CA key pair",
-	Args:  cobra.NoArgs,
-	Run: func(cmd *cobra.Command, args []string) {
-		err := generateCAKeyPair()
-		if err != nil {
-			log.Fatal(err)
-		}
-	},
-}
-
-func init() {
-	commandGenerateCAKeyPair.Flags().StringVarP(&flagGenerateCAName, "name", "n", "", "Set custom CA name")
-	commandGenerateCAKeyPair.Flags().StringVarP(&flagGenerateCAPKCS12Password, "p12-password", "p", "", "Set custom PKCS12 password")
-	commandGenerateCAKeyPair.Flags().StringVarP(&flagGenerateOutput, "output", "o", ".", "Set output directory")
-	commandGenerate.AddCommand(commandGenerateCAKeyPair)
-}
-
-func generateCAKeyPair() error {
-	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return err
-	}
-	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
-	serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
-	if err != nil {
-		return err
-	}
-	spkiASN1, err := x509.MarshalPKIXPublicKey(privateKey.Public())
-	var spki struct {
-		Algorithm        pkix.AlgorithmIdentifier
-		SubjectPublicKey asn1.BitString
-	}
-	_, err = asn1.Unmarshal(spkiASN1, &spki)
-	if err != nil {
-		return err
-	}
-	skid := sha1.Sum(spki.SubjectPublicKey.Bytes)
-	var caName string
-	if flagGenerateCAName != "" {
-		caName = flagGenerateCAName
-	} else {
-		caName = "sing-box Generated CA " + strings.ToUpper(hex.EncodeToString(skid[:4]))
-	}
-	caTpl := &x509.Certificate{
-		SerialNumber: serialNumber,
-		Subject: pkix.Name{
-			Organization: []string{caName},
-			CommonName:   caName,
-		},
-		SubjectKeyId:          skid[:],
-		NotAfter:              time.Now().AddDate(10, 0, 0),
-		NotBefore:             time.Now(),
-		KeyUsage:              x509.KeyUsageCertSign,
-		BasicConstraintsValid: true,
-		IsCA:                  true,
-		MaxPathLenZero:        true,
-	}
-	publicDer, err := x509.CreateCertificate(rand.Reader, caTpl, caTpl, privateKey.Public(), privateKey)
-	var caPassword string
-	if flagGenerateCAPKCS12Password != "" {
-		caPassword = flagGenerateCAPKCS12Password
-	} else {
-		caPassword = strings.ToUpper(hex.EncodeToString(skid[:4]))
-	}
-	caTpl.Raw = publicDer
-	p12Bytes, err := pkcs12.Modern.Encode(privateKey, caTpl, nil, caPassword)
-	if err != nil {
-		return err
-	}
-	privateDer, err := x509.MarshalPKCS8PrivateKey(privateKey)
-	if err != nil {
-		return err
-	}
-	os.WriteFile(filepath.Join(flagGenerateOutput, caName+".pem"), pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: publicDer}), 0o644)
-	os.WriteFile(filepath.Join(flagGenerateOutput, caName+".private.pem"), pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: privateDer}), 0o644)
-	os.WriteFile(filepath.Join(flagGenerateOutput, caName+".crt"), publicDer, 0o644)
-	os.WriteFile(filepath.Join(flagGenerateOutput, caName+".p12"), p12Bytes, 0o644)
-	var tlsDecryptionOptions option.TLSDecryptionOptions
-	tlsDecryptionOptions.Enabled = true
-	tlsDecryptionOptions.KeyPair = base64.StdEncoding.EncodeToString(p12Bytes)
-	tlsDecryptionOptions.KeyPairPassword = caPassword
-	var certificateOptions option.CertificateOptions
-	certificateOptions.TLSDecryption = &tlsDecryptionOptions
-	encoder := json.NewEncoder(os.Stdout)
-	encoder.SetIndent("", "  ")
-	return encoder.Encode(certificateOptions)
-}

cmd/sing-box/cmd_rule_set_compile.go

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

cmd/sing-box/cmd_rule_set_convert.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/sagernet/sing-box/cmd/sing-box/internal/convertor/adguard"
+	"github.com/sagernet/sing-box/common/convertor/adguard"
 	"github.com/sagernet/sing-box/common/srs"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
@@ -54,7 +54,7 @@ func convertRuleSet(sourcePath string) error {
 	var rules []option.HeadlessRule
 	switch flagRuleSetConvertType {
 	case "adguard":
-		rules, err = adguard.Convert(reader)
+		rules, err = adguard.ToOptions(reader, log.StdLogger())
 	case "":
 		return E.New("source type is required")
 	default:

cmd/sing-box/cmd_rule_set_decompile.go

@@ -6,7 +6,10 @@ import (
 	"strings"
 
 	"github.com/sagernet/sing-box/common/srs"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/json"
 
 	"github.com/spf13/cobra"
@@ -50,6 +53,11 @@ func decompileRuleSet(sourcePath string) error {
 	if err != nil {
 		return err
 	}
+	if hasRule(ruleSet.Options.Rules, func(rule option.DefaultHeadlessRule) bool {
+		return len(rule.AdGuardDomain) > 0
+	}) {
+		return E.New("unable to decompile binary AdGuard rules to rule-set.")
+	}
 	var outputPath string
 	if flagRuleSetDecompileOutput == flagRuleSetDecompileDefaultOutput {
 		if strings.HasSuffix(sourcePath, ".srs") {
@@ -75,3 +83,19 @@ func decompileRuleSet(sourcePath string) error {
 	outputFile.Close()
 	return nil
 }
+
+func hasRule(rules []option.HeadlessRule, cond func(rule option.DefaultHeadlessRule) bool) bool {
+	for _, rule := range rules {
+		switch rule.Type {
+		case C.RuleTypeDefault:
+			if cond(rule.DefaultOptions) {
+				return true
+			}
+		case C.RuleTypeLogical:
+			if hasRule(rule.LogicalOptions.Rules, cond) {
+				return true
+			}
+		}
+	}
+	return false
+}

cmd/sing-box/cmd_rule_set_match.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"io"
 	"os"
+	"path/filepath"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/srs"
@@ -56,6 +57,14 @@ func ruleSetMatch(sourcePath string, domain string) error {
 	if err != nil {
 		return E.Cause(err, "read rule-set")
 	}
+	if flagRuleSetMatchFormat == "" {
+		switch filepath.Ext(sourcePath) {
+		case ".json":
+			flagRuleSetMatchFormat = C.RuleSetFormatSource
+		case ".srs":
+			flagRuleSetMatchFormat = C.RuleSetFormatBinary
+		}
+	}
 	var ruleSet option.PlainRuleSetCompat
 	switch flagRuleSetMatchFormat {
 	case C.RuleSetFormatSource:

cmd/sing-box/cmd_tools.go

@@ -1,6 +1,13 @@
 package main
 
 import (
+	"errors"
+	"os"
+
+	"github.com/sagernet/sing-box"
+	E "github.com/sagernet/sing/common/exceptions"
+	N "github.com/sagernet/sing/common/network"
+
 	"github.com/spf13/cobra"
 )
 
@@ -12,5 +19,36 @@ var commandTools = &cobra.Command{
 }
 
 func init() {
+	commandTools.PersistentFlags().StringVarP(&commandToolsFlagOutbound, "outbound", "o", "", "Use specified tag instead of default outbound")
 	mainCommand.AddCommand(commandTools)
 }
+
+func createPreStartedClient() (*box.Box, error) {
+	options, err := readConfigAndMerge()
+	if err != nil {
+		if !(errors.Is(err, os.ErrNotExist) && len(configDirectories) == 0 && len(configPaths) == 1) || configPaths[0] != "config.json" {
+			return nil, err
+		}
+	}
+	instance, err := box.New(box.Options{Context: globalCtx, Options: options})
+	if err != nil {
+		return nil, E.Cause(err, "create service")
+	}
+	err = instance.PreStart()
+	if err != nil {
+		return nil, E.Cause(err, "start service")
+	}
+	return instance, nil
+}
+
+func createDialer(instance *box.Box, outboundTag string) (N.Dialer, error) {
+	if outboundTag == "" {
+		return instance.Outbound().Default(), nil
+	} else {
+		outbound, loaded := instance.Outbound().Outbound(outboundTag)
+		if !loaded {
+			return nil, E.New("outbound not found: ", outboundTag)
+		}
+		return outbound, nil
+	}
+}

cmd/sing-box/cmd_tools_connect.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"context"
+	"os"
+
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/bufio"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/common/task"
+
+	"github.com/spf13/cobra"
+)
+
+var commandConnectFlagNetwork string
+
+var commandConnect = &cobra.Command{
+	Use:   "connect <address>",
+	Short: "Connect to an address",
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		err := connect(args[0])
+		if err != nil {
+			log.Fatal(err)
+		}
+	},
+}
+
+func init() {
+	commandConnect.Flags().StringVarP(&commandConnectFlagNetwork, "network", "n", "tcp", "network type")
+	commandTools.AddCommand(commandConnect)
+}
+
+func connect(address string) error {
+	switch N.NetworkName(commandConnectFlagNetwork) {
+	case N.NetworkTCP, N.NetworkUDP:
+	default:
+		return E.Cause(N.ErrUnknownNetwork, commandConnectFlagNetwork)
+	}
+	instance, err := createPreStartedClient()
+	if err != nil {
+		return err
+	}
+	defer instance.Close()
+	dialer, err := createDialer(instance, commandToolsFlagOutbound)
+	if err != nil {
+		return err
+	}
+	conn, err := dialer.DialContext(context.Background(), commandConnectFlagNetwork, M.ParseSocksaddr(address))
+	if err != nil {
+		return E.Cause(err, "connect to server")
+	}
+	var group task.Group
+	group.Append("upload", func(ctx context.Context) error {
+		return common.Error(bufio.Copy(conn, os.Stdin))
+	})
+	group.Append("download", func(ctx context.Context) error {
+		return common.Error(bufio.Copy(os.Stdout, conn))
+	})
+	group.Cleanup(func() {
+		conn.Close()
+	})
+	err = group.Run(context.Background())
+	if E.IsClosed(err) {
+		log.Info(err)
+	} else {
+		log.Error(err)
+	}
+	return nil
+}

cmd/sing-box/cmd_tools_fetch.go

@@ -0,0 +1,115 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common/bufio"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+
+	"github.com/spf13/cobra"
+)
+
+var commandFetch = &cobra.Command{
+	Use:   "fetch",
+	Short: "Fetch an URL",
+	Args:  cobra.MinimumNArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		err := fetch(args)
+		if err != nil {
+			log.Fatal(err)
+		}
+	},
+}
+
+func init() {
+	commandTools.AddCommand(commandFetch)
+}
+
+var (
+	httpClient  *http.Client
+	http3Client *http.Client
+)
+
+func fetch(args []string) error {
+	instance, err := createPreStartedClient()
+	if err != nil {
+		return err
+	}
+	defer instance.Close()
+	httpClient = &http.Client{
+		Transport: &http.Transport{
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				dialer, err := createDialer(instance, commandToolsFlagOutbound)
+				if err != nil {
+					return nil, err
+				}
+				return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
+			},
+			ForceAttemptHTTP2: true,
+		},
+	}
+	defer httpClient.CloseIdleConnections()
+	if C.WithQUIC {
+		err = initializeHTTP3Client(instance)
+		if err != nil {
+			return err
+		}
+		defer http3Client.CloseIdleConnections()
+	}
+	for _, urlString := range args {
+		var parsedURL *url.URL
+		parsedURL, err = url.Parse(urlString)
+		if err != nil {
+			return err
+		}
+		switch parsedURL.Scheme {
+		case "":
+			parsedURL.Scheme = "http"
+			fallthrough
+		case "http", "https":
+			err = fetchHTTP(httpClient, parsedURL)
+			if err != nil {
+				return err
+			}
+		case "http3":
+			if !C.WithQUIC {
+				return C.ErrQUICNotIncluded
+			}
+			parsedURL.Scheme = "https"
+			err = fetchHTTP(http3Client, parsedURL)
+			if err != nil {
+				return err
+			}
+		default:
+			return E.New("unsupported scheme: ", parsedURL.Scheme)
+		}
+	}
+	return nil
+}
+
+func fetchHTTP(httpClient *http.Client, parsedURL *url.URL) error {
+	request, err := http.NewRequest("GET", parsedURL.String(), nil)
+	if err != nil {
+		return err
+	}
+	request.Header.Add("User-Agent", "curl/7.88.0")
+	response, err := httpClient.Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	_, err = bufio.Copy(os.Stdout, response.Body)
+	if errors.Is(err, io.EOF) {
+		return nil
+	}
+	return err
+}

cmd/sing-box/cmd_tools_fetch_http3.go

@@ -0,0 +1,36 @@
+//go:build with_quic
+
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"net/http"
+
+	"github.com/sagernet/quic-go"
+	"github.com/sagernet/quic-go/http3"
+	box "github.com/sagernet/sing-box"
+	"github.com/sagernet/sing/common/bufio"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func initializeHTTP3Client(instance *box.Box) error {
+	dialer, err := createDialer(instance, commandToolsFlagOutbound)
+	if err != nil {
+		return err
+	}
+	http3Client = &http.Client{
+		Transport: &http3.Transport{
+			Dial: func(ctx context.Context, addr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.EarlyConnection, error) {
+				destination := M.ParseSocksaddr(addr)
+				udpConn, dErr := dialer.DialContext(ctx, N.NetworkUDP, destination)
+				if dErr != nil {
+					return nil, dErr
+				}
+				return quic.DialEarly(ctx, bufio.NewUnbindPacketConn(udpConn), udpConn.RemoteAddr(), tlsCfg, cfg)
+			},
+		},
+	}
+	return nil
+}

cmd/sing-box/cmd_tools_fetch_http3_stub.go

@@ -0,0 +1,18 @@
+//go:build !with_quic
+
+package main
+
+import (
+	"net/url"
+	"os"
+
+	box "github.com/sagernet/sing-box"
+)
+
+func initializeHTTP3Client(instance *box.Box) error {
+	return os.ErrInvalid
+}
+
+func fetchHTTP3(parsedURL *url.URL) error {
+	return os.ErrInvalid
+}

cmd/sing-box/cmd_tools_install_ca.go

@@ -1,108 +0,0 @@
-package main
-
-import (
-	"encoding/pem"
-	"errors"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime"
-	"strings"
-
-	"github.com/sagernet/sing-box/log"
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/shell"
-
-	"github.com/spf13/cobra"
-)
-
-var commandInstallCACertificate = &cobra.Command{
-	Use:   "install-ca <path to certificate>",
-	Short: "Install CA certificate to system",
-	Args:  cobra.ExactArgs(1),
-	Run: func(cmd *cobra.Command, args []string) {
-		err := installCACertificate(args[0])
-		if err != nil {
-			log.Fatal(err)
-		}
-	},
-}
-
-func init() {
-	commandTools.AddCommand(commandInstallCACertificate)
-}
-
-func installCACertificate(path string) error {
-	switch runtime.GOOS {
-	case "windows":
-		return shell.Exec("powershell", "-Command", "Import-Certificate -FilePath \""+path+"\" -CertStoreLocation Cert:\\LocalMachine\\Root").Attach().Run()
-	case "darwin":
-		return shell.Exec("sudo", "security", "add-trusted-cert", "-d", "-r", "trustRoot", "-k", "/Library/Keychains/System.keychain", path).Attach().Run()
-	case "linux":
-		updateCertPath, updateCertPathNotFoundErr := exec.LookPath("update-ca-certificates")
-		if updateCertPathNotFoundErr == nil {
-			publicDer, err := os.ReadFile(path)
-			if err != nil {
-				return err
-			}
-			err = os.MkdirAll("/usr/local/share/ca-certificates", 0o755)
-			if err != nil {
-				if errors.Is(err, os.ErrPermission) {
-					log.Info("Try running with sudo")
-					return shell.Exec("sudo", os.Args...).Attach().Run()
-				}
-				return err
-			}
-			fileName := filepath.Base(updateCertPath)
-			if !strings.HasSuffix(fileName, ".crt") {
-				fileName = fileName + ".crt"
-			}
-			filePath, _ := filepath.Abs(filepath.Join("/usr/local/share/ca-certificates", fileName))
-			err = os.WriteFile(filePath, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: publicDer}), 0o644)
-			if err != nil {
-				if errors.Is(err, os.ErrPermission) {
-					log.Info("Try running with sudo")
-					return shell.Exec("sudo", os.Args...).Attach().Run()
-				}
-				return err
-			}
-			log.Info("certificate written to " + filePath + "\n")
-			err = shell.Exec(updateCertPath).Attach().Run()
-			if err != nil {
-				return err
-			}
-			log.Info("certificate installed")
-			return nil
-		}
-		updateTrustPath, updateTrustPathNotFoundErr := exec.LookPath("update-ca-trust")
-		if updateTrustPathNotFoundErr == nil {
-			publicDer, err := os.ReadFile(path)
-			if err != nil {
-				return err
-			}
-			fileName := filepath.Base(updateTrustPath)
-			fileExt := filepath.Ext(path)
-			if fileExt != "" {
-				fileName = fileName[:len(fileName)-len(fileExt)]
-			}
-			filePath, _ := filepath.Abs(filepath.Join("/etc/pki/ca-trust/source/anchors/", fileName+".pem"))
-			err = os.WriteFile(filePath, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: publicDer}), 0o644)
-			if err != nil {
-				if errors.Is(err, os.ErrPermission) {
-					log.Info("Try running with sudo")
-					return shell.Exec("sudo", os.Args...).Attach().Run()
-				}
-				return err
-			}
-			log.Info("certificate written to " + filePath + "\n")
-			err = shell.Exec(updateTrustPath, "extract").Attach().Run()
-			if err != nil {
-				return err
-			}
-			log.Info("certificate installed")
-		}
-		return E.New("update-ca-certificates or update-ca-trust not found")
-	default:
-		return E.New("unsupported operating system: ", runtime.GOOS)
-	}
-}

cmd/sing-box/cmd_tools_synctime.go

@@ -8,7 +8,6 @@ import (
 	"github.com/sagernet/sing-box/log"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/ntp"
 
 	"github.com/spf13/cobra"
@@ -40,11 +39,20 @@ func init() {
 }
 
 func syncTime() error {
+	instance, err := createPreStartedClient()
+	if err != nil {
+		return err
+	}
+	dialer, err := createDialer(instance, commandToolsFlagOutbound)
+	if err != nil {
+		return err
+	}
+	defer instance.Close()
 	serverAddress := M.ParseSocksaddr(commandSyncTimeFlagServer)
 	if serverAddress.Port == 0 {
 		serverAddress.Port = 123
 	}
-	response, err := ntp.Exchange(context.Background(), N.SystemDialer, serverAddress)
+	response, err := ntp.Exchange(context.Background(), dialer, serverAddress)
 	if err != nil {
 		return err
 	}

common/badtls/raw_conn.go

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

common/badtls/raw_half_conn.go

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

common/badtls/read_wait.go

@@ -1,18 +1,9 @@
-//go:build go1.21 && !without_badtls
+//go:build go1.25 && !without_badtls
 
 package badtls
 
 import (
-	"bytes"
-	"context"
-	"net"
-	"os"
-	"reflect"
-	"sync"
-	"unsafe"
-
 	"github.com/sagernet/sing/common/buf"
-	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/tls"
 )
@@ -21,63 +12,21 @@ var _ N.ReadWaiter = (*ReadWaitConn)(nil)
 
 type ReadWaitConn struct {
 	tls.Conn
-	halfAccess                    *sync.Mutex
-	rawInput                      *bytes.Buffer
-	input                         *bytes.Reader
-	hand                          *bytes.Buffer
-	readWaitOptions               N.ReadWaitOptions
-	tlsReadRecord                 func() error
-	tlsHandlePostHandshakeMessage func() error
+	rawConn         *RawConn
+	readWaitOptions N.ReadWaitOptions
 }
 
 func NewReadWaitConn(conn tls.Conn) (tls.Conn, error) {
-	var (
-		loaded                        bool
-		tlsReadRecord                 func() error
-		tlsHandlePostHandshakeMessage func() error
-	)
-	for _, tlsCreator := range tlsRegistry {
-		loaded, tlsReadRecord, tlsHandlePostHandshakeMessage = tlsCreator(conn)
-		if loaded {
-			break
-		}
+	if _, isReadWaitConn := conn.(N.ReadWaiter); isReadWaitConn {
+		return conn, nil
 	}
-	if !loaded {
-		return nil, os.ErrInvalid
+	rawConn, err := NewRawConn(conn)
+	if err != nil {
+		return nil, err
 	}
-	rawConn := reflect.Indirect(reflect.ValueOf(conn))
-	rawHalfConn := rawConn.FieldByName("in")
-	if !rawHalfConn.IsValid() || rawHalfConn.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid half conn")
-	}
-	rawHalfMutex := rawHalfConn.FieldByName("Mutex")
-	if !rawHalfMutex.IsValid() || rawHalfMutex.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid half mutex")
-	}
-	halfAccess := (*sync.Mutex)(unsafe.Pointer(rawHalfMutex.UnsafeAddr()))
-	rawRawInput := rawConn.FieldByName("rawInput")
-	if !rawRawInput.IsValid() || rawRawInput.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid raw input")
-	}
-	rawInput := (*bytes.Buffer)(unsafe.Pointer(rawRawInput.UnsafeAddr()))
-	rawInput0 := rawConn.FieldByName("input")
-	if !rawInput0.IsValid() || rawInput0.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid input")
-	}
-	input := (*bytes.Reader)(unsafe.Pointer(rawInput0.UnsafeAddr()))
-	rawHand := rawConn.FieldByName("hand")
-	if !rawHand.IsValid() || rawHand.Kind() != reflect.Struct {
-		return nil, E.New("badtls: invalid hand")
-	}
-	hand := (*bytes.Buffer)(unsafe.Pointer(rawHand.UnsafeAddr()))
 	return &ReadWaitConn{
-		Conn:                          conn,
-		halfAccess:                    halfAccess,
-		rawInput:                      rawInput,
-		input:                         input,
-		hand:                          hand,
-		tlsReadRecord:                 tlsReadRecord,
-		tlsHandlePostHandshakeMessage: tlsHandlePostHandshakeMessage,
+		Conn:    conn,
+		rawConn: rawConn,
 	}, nil
 }
 
@@ -87,36 +36,36 @@ func (c *ReadWaitConn) InitializeReadWaiter(options N.ReadWaitOptions) (needCopy
 }
 
 func (c *ReadWaitConn) WaitReadBuffer() (buffer *buf.Buffer, err error) {
-	err = c.HandshakeContext(context.Background())
-	if err != nil {
-		return
-	}
-	c.halfAccess.Lock()
-	defer c.halfAccess.Unlock()
-	for c.input.Len() == 0 {
-		err = c.tlsReadRecord()
+	//err = c.HandshakeContext(context.Background())
+	//if err != nil {
+	//	return
+	//}
+	c.rawConn.In.Lock()
+	defer c.rawConn.In.Unlock()
+	for c.rawConn.Input.Len() == 0 {
+		err = c.rawConn.ReadRecord()
 		if err != nil {
 			return
 		}
-		for c.hand.Len() > 0 {
-			err = c.tlsHandlePostHandshakeMessage()
+		for c.rawConn.Hand.Len() > 0 {
+			err = c.rawConn.HandlePostHandshakeMessage()
 			if err != nil {
 				return
 			}
 		}
 	}
 	buffer = c.readWaitOptions.NewBuffer()
-	n, err := c.input.Read(buffer.FreeBytes())
+	n, err := c.rawConn.Input.Read(buffer.FreeBytes())
 	if err != nil {
 		buffer.Release()
 		return
 	}
 	buffer.Truncate(n)
 
-	if n != 0 && c.input.Len() == 0 && c.rawInput.Len() > 0 &&
-		// recordType(c.rawInput.Bytes()[0]) == recordTypeAlert {
-		c.rawInput.Bytes()[0] == 21 {
-		_ = c.tlsReadRecord()
+	if n != 0 && c.rawConn.Input.Len() == 0 && c.rawConn.Input.Len() > 0 &&
+		// recordType(c.RawInput.Bytes()[0]) == recordTypeAlert {
+		c.rawConn.RawInput.Bytes()[0] == 21 {
+		_ = c.rawConn.ReadRecord()
 		// return n, err // will be io.EOF on closeNotify
 	}
 
@@ -128,24 +77,6 @@ func (c *ReadWaitConn) Upstream() any {
 	return c.Conn
 }
 
-var tlsRegistry []func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error)
-
-func init() {
-	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
-		tlsConn, loaded := conn.(*tls.STDConn)
-		if !loaded {
-			return
-		}
-		return true, func() error {
-				return stdTLSReadRecord(tlsConn)
-			}, func() error {
-				return stdTLSHandlePostHandshakeMessage(tlsConn)
-			}
-	})
+func (c *ReadWaitConn) ReaderReplaceable() bool {
+	return true
 }
-
-//go:linkname stdTLSReadRecord crypto/tls.(*Conn).readRecord
-func stdTLSReadRecord(c *tls.STDConn) error
-
-//go:linkname stdTLSHandlePostHandshakeMessage crypto/tls.(*Conn).handlePostHandshakeMessage
-func stdTLSHandlePostHandshakeMessage(c *tls.STDConn) error

common/badtls/read_wait_stub.go

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

common/badtls/read_wait_utls.go

@@ -1,31 +0,0 @@
-//go:build go1.21 && !without_badtls && with_utls
-
-package badtls
-
-import (
-	"net"
-	_ "unsafe"
-
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/utls"
-)
-
-func init() {
-	tlsRegistry = append(tlsRegistry, func(conn net.Conn) (loaded bool, tlsReadRecord func() error, tlsHandlePostHandshakeMessage func() error) {
-		tlsConn, loaded := common.Cast[*tls.UConn](conn)
-		if !loaded {
-			return
-		}
-		return true, func() error {
-				return utlsReadRecord(tlsConn.Conn)
-			}, func() error {
-				return utlsHandlePostHandshakeMessage(tlsConn.Conn)
-			}
-	})
-}
-
-//go:linkname utlsReadRecord github.com/sagernet/utls.(*Conn).readRecord
-func utlsReadRecord(c *tls.Conn) error
-
-//go:linkname utlsHandlePostHandshakeMessage github.com/sagernet/utls.(*Conn).handlePostHandshakeMessage
-func utlsHandlePostHandshakeMessage(c *tls.Conn) error

common/badtls/registry.go

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

common/badtls/registry_utls.go

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

common/badversion/version.go

@@ -5,6 +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

@@ -3,7 +3,6 @@ package certificate
 import (
 	"context"
 	"crypto/x509"
-	"encoding/base64"
 	"io/fs"
 	"os"
 	"path/filepath"
@@ -17,8 +16,6 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/logger"
 	"github.com/sagernet/sing/service"
-
-	"software.sslmate.com/src/go-pkcs12"
 )
 
 var _ adapter.CertificateStore = (*Store)(nil)
@@ -30,9 +27,6 @@ type Store struct {
 	certificatePaths          []string
 	certificateDirectoryPaths []string
 	watcher                   *fswatch.Watcher
-	tlsDecryptionEnabled      bool
-	tlsDecryptionPrivateKey   any
-	tlsDecryptionCertificate  *x509.Certificate
 }
 
 func NewStore(ctx context.Context, logger logger.Logger, options option.CertificateOptions) (*Store, error) {
@@ -96,19 +90,6 @@ func NewStore(ctx context.Context, logger logger.Logger, options option.Certific
 	if err != nil {
 		return nil, E.Cause(err, "initializing certificate store")
 	}
-	if options.TLSDecryption != nil && options.TLSDecryption.Enabled {
-		pfxBytes, err := base64.StdEncoding.DecodeString(options.TLSDecryption.KeyPair)
-		if err != nil {
-			return nil, E.Cause(err, "decode key pair base64 bytes")
-		}
-		privateKey, certificate, err := pkcs12.Decode(pfxBytes, options.TLSDecryption.KeyPairPassword)
-		if err != nil {
-			return nil, E.Cause(err, "decode key pair")
-		}
-		store.tlsDecryptionEnabled = true
-		store.tlsDecryptionPrivateKey = privateKey
-		store.tlsDecryptionCertificate = certificate
-	}
 	return store, nil
 }
 
@@ -202,15 +183,3 @@ func isSameDirSymlink(f fs.DirEntry, dir string) bool {
 	target, err := os.Readlink(filepath.Join(dir, f.Name()))
 	return err == nil && !strings.Contains(target, "/")
 }
-
-func (s *Store) TLSDecryptionEnabled() bool {
-	return s.tlsDecryptionEnabled
-}
-
-func (s *Store) TLSDecryptionCertificate() *x509.Certificate {
-	return s.tlsDecryptionCertificate
-}
-
-func (s *Store) TLSDecryptionPrivateKey() any {
-	return s.tlsDecryptionPrivateKey
-}

common/convertor/adguard/convertor.go

@@ -2,6 +2,7 @@ package adguard
 
 import (
 	"bufio"
+	"bytes"
 	"io"
 	"net/netip"
 	"os"
@@ -9,10 +10,10 @@ import (
 	"strings"
 
 	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
 	M "github.com/sagernet/sing/common/metadata"
 )
 
@@ -27,7 +28,7 @@ type agdguardRuleLine struct {
 	isImportant bool
 }
 
-func Convert(reader io.Reader) ([]option.HeadlessRule, error) {
+func ToOptions(reader io.Reader, logger logger.Logger) ([]option.HeadlessRule, error) {
 	scanner := bufio.NewScanner(reader)
 	var (
 		ruleLines    []agdguardRuleLine
@@ -36,7 +37,10 @@ func Convert(reader io.Reader) ([]option.HeadlessRule, error) {
 parseLine:
 	for scanner.Scan() {
 		ruleLine := scanner.Text()
-		if ruleLine == "" || ruleLine[0] == '!' || ruleLine[0] == '#' {
+		if ruleLine == "" {
+			continue
+		}
+		if strings.HasPrefix(ruleLine, "!") || strings.HasPrefix(ruleLine, "#") {
 			continue
 		}
 		originRuleLine := ruleLine
@@ -92,7 +96,7 @@ parseLine:
 				}
 				if !ignored {
 					ignoredLines++
-					log.Debug("ignored unsupported rule with modifier: ", paramParts[0], ": ", ruleLine)
+					logger.Debug("ignored unsupported rule with modifier: ", paramParts[0], ": ", originRuleLine)
 					continue parseLine
 				}
 			}
@@ -120,27 +124,35 @@ parseLine:
 			ruleLine = ruleLine[1 : len(ruleLine)-1]
 			if ignoreIPCIDRRegexp(ruleLine) {
 				ignoredLines++
-				log.Debug("ignored unsupported rule with IPCIDR regexp: ", ruleLine)
+				logger.Debug("ignored unsupported rule with IPCIDR regexp: ", originRuleLine)
 				continue
 			}
 			isRegexp = true
 		} else {
 			if strings.Contains(ruleLine, "://") {
 				ruleLine = common.SubstringAfter(ruleLine, "://")
+				isSuffix = true
 			}
 			if strings.Contains(ruleLine, "/") {
 				ignoredLines++
-				log.Debug("ignored unsupported rule with path: ", ruleLine)
+				logger.Debug("ignored unsupported rule with path: ", originRuleLine)
 				continue
 			}
-			if strings.Contains(ruleLine, "##") {
+			if strings.Contains(ruleLine, "?") || strings.Contains(ruleLine, "&") {
 				ignoredLines++
-				log.Debug("ignored unsupported rule with element hiding: ", ruleLine)
+				logger.Debug("ignored unsupported rule with query: ", originRuleLine)
 				continue
 			}
-			if strings.Contains(ruleLine, "#$#") {
+			if strings.Contains(ruleLine, "[") || strings.Contains(ruleLine, "]") ||
+				strings.Contains(ruleLine, "(") || strings.Contains(ruleLine, ")") ||
+				strings.Contains(ruleLine, "!") || strings.Contains(ruleLine, "#") {
 				ignoredLines++
-				log.Debug("ignored unsupported rule with element hiding: ", ruleLine)
+				logger.Debug("ignored unsupported cosmetic filter: ", originRuleLine)
+				continue
+			}
+			if strings.Contains(ruleLine, "~") {
+				ignoredLines++
+				logger.Debug("ignored unsupported rule modifier: ", originRuleLine)
 				continue
 			}
 			var domainCheck string
@@ -151,7 +163,7 @@ parseLine:
 			}
 			if ruleLine == "" {
 				ignoredLines++
-				log.Debug("ignored unsupported rule with empty domain", originRuleLine)
+				logger.Debug("ignored unsupported rule with empty domain", originRuleLine)
 				continue
 			} else {
 				domainCheck = strings.ReplaceAll(domainCheck, "*", "x")
@@ -159,13 +171,13 @@ parseLine:
 					_, ipErr := parseADGuardIPCIDRLine(ruleLine)
 					if ipErr == nil {
 						ignoredLines++
-						log.Debug("ignored unsupported rule with IPCIDR: ", ruleLine)
+						logger.Debug("ignored unsupported rule with IPCIDR: ", originRuleLine)
 						continue
 					}
 					if M.ParseSocksaddr(domainCheck).Port != 0 {
-						log.Debug("ignored unsupported rule with port: ", ruleLine)
+						logger.Debug("ignored unsupported rule with port: ", originRuleLine)
 					} else {
-						log.Debug("ignored unsupported rule with invalid domain: ", ruleLine)
+						logger.Debug("ignored unsupported rule with invalid domain: ", originRuleLine)
 					}
 					ignoredLines++
 					continue
@@ -283,10 +295,112 @@ parseLine:
 			},
 		}
 	}
-	log.Info("parsed rules: ", len(ruleLines), "/", len(ruleLines)+ignoredLines)
+	if ignoredLines > 0 {
+		logger.Info("parsed rules: ", len(ruleLines), "/", len(ruleLines)+ignoredLines)
+	}
 	return []option.HeadlessRule{currentRule}, nil
 }
 
+var ErrInvalid = E.New("invalid binary AdGuard rule-set")
+
+func FromOptions(rules []option.HeadlessRule) ([]byte, error) {
+	if len(rules) != 1 {
+		return nil, ErrInvalid
+	}
+	rule := rules[0]
+	var (
+		importantDomain             []string
+		importantDomainRegex        []string
+		importantExcludeDomain      []string
+		importantExcludeDomainRegex []string
+		domain                      []string
+		domainRegex                 []string
+		excludeDomain               []string
+		excludeDomainRegex          []string
+	)
+parse:
+	for {
+		switch rule.Type {
+		case C.RuleTypeLogical:
+			if !(len(rule.LogicalOptions.Rules) == 2 && rule.LogicalOptions.Rules[0].Type == C.RuleTypeDefault) {
+				return nil, ErrInvalid
+			}
+			if rule.LogicalOptions.Mode == C.LogicalTypeAnd && rule.LogicalOptions.Rules[0].DefaultOptions.Invert {
+				if len(importantExcludeDomain) == 0 && len(importantExcludeDomainRegex) == 0 {
+					importantExcludeDomain = rule.LogicalOptions.Rules[0].DefaultOptions.AdGuardDomain
+					importantExcludeDomainRegex = rule.LogicalOptions.Rules[0].DefaultOptions.DomainRegex
+					if len(importantExcludeDomain)+len(importantExcludeDomainRegex) == 0 {
+						return nil, ErrInvalid
+					}
+				} else {
+					excludeDomain = rule.LogicalOptions.Rules[0].DefaultOptions.AdGuardDomain
+					excludeDomainRegex = rule.LogicalOptions.Rules[0].DefaultOptions.DomainRegex
+					if len(excludeDomain)+len(excludeDomainRegex) == 0 {
+						return nil, ErrInvalid
+					}
+				}
+			} else if rule.LogicalOptions.Mode == C.LogicalTypeOr && !rule.LogicalOptions.Rules[0].DefaultOptions.Invert {
+				importantDomain = rule.LogicalOptions.Rules[0].DefaultOptions.AdGuardDomain
+				importantDomainRegex = rule.LogicalOptions.Rules[0].DefaultOptions.DomainRegex
+				if len(importantDomain)+len(importantDomainRegex) == 0 {
+					return nil, ErrInvalid
+				}
+			} else {
+				return nil, ErrInvalid
+			}
+			rule = rule.LogicalOptions.Rules[1]
+		case C.RuleTypeDefault:
+			domain = rule.DefaultOptions.AdGuardDomain
+			domainRegex = rule.DefaultOptions.DomainRegex
+			if len(domain)+len(domainRegex) == 0 {
+				return nil, ErrInvalid
+			}
+			break parse
+		}
+	}
+	var output bytes.Buffer
+	for _, ruleLine := range importantDomain {
+		output.WriteString(ruleLine)
+		output.WriteString("$important\n")
+	}
+	for _, ruleLine := range importantDomainRegex {
+		output.WriteString("/")
+		output.WriteString(ruleLine)
+		output.WriteString("/$important\n")
+
+	}
+	for _, ruleLine := range importantExcludeDomain {
+		output.WriteString("@@")
+		output.WriteString(ruleLine)
+		output.WriteString("$important\n")
+	}
+	for _, ruleLine := range importantExcludeDomainRegex {
+		output.WriteString("@@/")
+		output.WriteString(ruleLine)
+		output.WriteString("/$important\n")
+	}
+	for _, ruleLine := range domain {
+		output.WriteString(ruleLine)
+		output.WriteString("\n")
+	}
+	for _, ruleLine := range domainRegex {
+		output.WriteString("/")
+		output.WriteString(ruleLine)
+		output.WriteString("/\n")
+	}
+	for _, ruleLine := range excludeDomain {
+		output.WriteString("@@")
+		output.WriteString(ruleLine)
+		output.WriteString("\n")
+	}
+	for _, ruleLine := range excludeDomainRegex {
+		output.WriteString("@@/")
+		output.WriteString(ruleLine)
+		output.WriteString("/\n")
+	}
+	return output.Bytes(), nil
+}
+
 func ignoreIPCIDRRegexp(ruleLine string) bool {
 	if strings.HasPrefix(ruleLine, "(http?:\\/\\/)") {
 		ruleLine = ruleLine[12:]
@@ -294,11 +408,9 @@ func ignoreIPCIDRRegexp(ruleLine string) bool {
 		ruleLine = ruleLine[13:]
 	} else if strings.HasPrefix(ruleLine, "^") {
 		ruleLine = ruleLine[1:]
-	} else {
-		return false
 	}
-	_, parseErr := strconv.ParseUint(common.SubstringBefore(ruleLine, "\\."), 10, 8)
-	return parseErr == nil
+	return common.Error(strconv.ParseUint(common.SubstringBefore(ruleLine, "\\."), 10, 8)) == nil ||
+		common.Error(strconv.ParseUint(common.SubstringBefore(ruleLine, "."), 10, 8)) == nil
 }
 
 func parseAdGuardHostLine(ruleLine string) (string, error) {
@@ -342,5 +454,5 @@ func parseADGuardIPCIDRLine(ruleLine string) (netip.Prefix, error) {
 	for len(ruleParts) < 4 {
 		ruleParts = append(ruleParts, 0)
 	}
-	return netip.PrefixFrom(netip.AddrFrom4(*(*[4]byte)(ruleParts)), bitLen), nil
+	return netip.PrefixFrom(netip.AddrFrom4([4]byte(ruleParts)), bitLen), nil
 }

common/convertor/adguard/convertor_test.go

@@ -7,13 +7,15 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/route/rule"
+	"github.com/sagernet/sing/common/logger"
 
 	"github.com/stretchr/testify/require"
 )
 
 func TestConverter(t *testing.T) {
 	t.Parallel()
-	rules, err := Convert(strings.NewReader(`
+	ruleString := `||sagernet.org^$important
+@@|sing-box.sagernet.org^$important
 ||example.org^
 |example.com^
 example.net^
@@ -21,10 +23,9 @@ example.net^
 ||example.edu.tw^
 |example.gov
 example.arpa
-@@|sagernet.example.org|
-||sagernet.org^$important
-@@|sing-box.sagernet.org^$important
-`))
+@@|sagernet.example.org^
+`
+	rules, err := ToOptions(strings.NewReader(ruleString), logger.NOP())
 	require.NoError(t, err)
 	require.Len(t, rules, 1)
 	rule, err := rule.NewHeadlessRule(context.Background(), rules[0])
@@ -75,15 +76,18 @@ example.arpa
 			Domain: domain,
 		}), domain)
 	}
+	ruleFromOptions, err := FromOptions(rules)
+	require.NoError(t, err)
+	require.Equal(t, ruleString, string(ruleFromOptions))
 }
 
 func TestHosts(t *testing.T) {
 	t.Parallel()
-	rules, err := Convert(strings.NewReader(`
+	rules, err := ToOptions(strings.NewReader(`
 127.0.0.1 localhost
 ::1 localhost #[IPv6]
 0.0.0.0 google.com
-`))
+`), logger.NOP())
 	require.NoError(t, err)
 	require.Len(t, rules, 1)
 	rule, err := rule.NewHeadlessRule(context.Background(), rules[0])
@@ -110,10 +114,10 @@ func TestHosts(t *testing.T) {
 
 func TestSimpleHosts(t *testing.T) {
 	t.Parallel()
-	rules, err := Convert(strings.NewReader(`
+	rules, err := ToOptions(strings.NewReader(`
 example.com
 www.example.org
-`))
+`), logger.NOP())
 	require.NoError(t, err)
 	require.Len(t, rules, 1)
 	rule, err := rule.NewHeadlessRule(context.Background(), rules[0])

common/dialer/default.go

@@ -15,7 +15,6 @@ import (
 	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/atomic"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
@@ -43,7 +42,7 @@ type DefaultDialer struct {
 	networkType            []C.InterfaceType
 	fallbackNetworkType    []C.InterfaceType
 	networkFallbackDelay   time.Duration
-	networkLastFallback    atomic.TypedValue[time.Time]
+	networkLastFallback    common.TypedValue[time.Time]
 }
 
 func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDialer, error) {
@@ -66,23 +65,19 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 		interfaceFinder = control.NewDefaultInterfaceFinder()
 	}
 	if options.BindInterface != "" {
+		if !(C.IsLinux || C.IsDarwin || C.IsWindows) {
+			return nil, E.New("`bind_interface` is only supported on Linux, macOS and Windows")
+		}
 		bindFunc := control.BindToInterface(interfaceFinder, options.BindInterface, -1)
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
 	}
 	if options.RoutingMark > 0 {
-		dialer.Control = control.Append(dialer.Control, control.RoutingMark(uint32(options.RoutingMark)))
-		listener.Control = control.Append(listener.Control, control.RoutingMark(uint32(options.RoutingMark)))
-	}
-	if networkManager != nil {
-		autoRedirectOutputMark := networkManager.AutoRedirectOutputMark()
-		if autoRedirectOutputMark > 0 {
-			if options.RoutingMark > 0 {
-				return nil, E.New("`routing_mark` is conflict with `tun.auto_redirect` with `tun.route_[_exclude]_address_set")
-			}
-			dialer.Control = control.Append(dialer.Control, control.RoutingMark(autoRedirectOutputMark))
-			listener.Control = control.Append(listener.Control, control.RoutingMark(autoRedirectOutputMark))
+		if !C.IsLinux {
+			return nil, E.New("`routing_mark` is only supported on Linux")
 		}
+		dialer.Control = control.Append(dialer.Control, setMarkWrapper(networkManager, uint32(options.RoutingMark), false))
+		listener.Control = control.Append(listener.Control, setMarkWrapper(networkManager, uint32(options.RoutingMark), false))
 	}
 	disableDefaultBind := options.BindInterface != "" || options.Inet4BindAddress != nil || options.Inet6BindAddress != nil
 	if disableDefaultBind || options.TCPFastOpen {
@@ -93,44 +88,47 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 
 	if networkManager != nil {
 		defaultOptions := networkManager.DefaultOptions()
-		if !disableDefaultBind {
-			if defaultOptions.BindInterface != "" {
-				bindFunc := control.BindToInterface(networkManager.InterfaceFinder(), defaultOptions.BindInterface, -1)
+		if defaultOptions.BindInterface != "" {
+			bindFunc := control.BindToInterface(networkManager.InterfaceFinder(), defaultOptions.BindInterface, -1)
+			dialer.Control = control.Append(dialer.Control, bindFunc)
+			listener.Control = control.Append(listener.Control, bindFunc)
+		} else if networkManager.AutoDetectInterface() && !disableDefaultBind {
+			if platformInterface != nil {
+				networkStrategy = (*C.NetworkStrategy)(options.NetworkStrategy)
+				networkType = common.Map(options.NetworkType, option.InterfaceType.Build)
+				fallbackNetworkType = common.Map(options.FallbackNetworkType, option.InterfaceType.Build)
+				if networkStrategy == nil && len(networkType) == 0 && len(fallbackNetworkType) == 0 {
+					networkStrategy = defaultOptions.NetworkStrategy
+					networkType = defaultOptions.NetworkType
+					fallbackNetworkType = defaultOptions.FallbackNetworkType
+				}
+				networkFallbackDelay = time.Duration(options.FallbackDelay)
+				if networkFallbackDelay == 0 && defaultOptions.FallbackDelay != 0 {
+					networkFallbackDelay = defaultOptions.FallbackDelay
+				}
+				if networkStrategy == nil {
+					networkStrategy = common.Ptr(C.NetworkStrategyDefault)
+					defaultNetworkStrategy = true
+				}
+				bindFunc := networkManager.ProtectFunc()
+				dialer.Control = control.Append(dialer.Control, bindFunc)
+				listener.Control = control.Append(listener.Control, bindFunc)
+			} else {
+				bindFunc := networkManager.AutoDetectInterfaceFunc()
 				dialer.Control = control.Append(dialer.Control, bindFunc)
 				listener.Control = control.Append(listener.Control, bindFunc)
-			} else if networkManager.AutoDetectInterface() {
-				if platformInterface != nil {
-					networkStrategy = (*C.NetworkStrategy)(options.NetworkStrategy)
-					if networkStrategy == nil {
-						networkStrategy = common.Ptr(C.NetworkStrategyDefault)
-						defaultNetworkStrategy = true
-					}
-					networkType = common.Map(options.NetworkType, option.InterfaceType.Build)
-					fallbackNetworkType = common.Map(options.FallbackNetworkType, option.InterfaceType.Build)
-					if networkStrategy == nil && len(networkType) == 0 && len(fallbackNetworkType) == 0 {
-						networkStrategy = defaultOptions.NetworkStrategy
-						networkType = defaultOptions.NetworkType
-						fallbackNetworkType = defaultOptions.FallbackNetworkType
-					}
-					networkFallbackDelay = time.Duration(options.FallbackDelay)
-					if networkFallbackDelay == 0 && defaultOptions.FallbackDelay != 0 {
-						networkFallbackDelay = defaultOptions.FallbackDelay
-					}
-					bindFunc := networkManager.ProtectFunc()
-					dialer.Control = control.Append(dialer.Control, bindFunc)
-					listener.Control = control.Append(listener.Control, bindFunc)
-				} else {
-					bindFunc := networkManager.AutoDetectInterfaceFunc()
-					dialer.Control = control.Append(dialer.Control, bindFunc)
-					listener.Control = control.Append(listener.Control, bindFunc)
-				}
 			}
 		}
 		if options.RoutingMark == 0 && defaultOptions.RoutingMark != 0 {
-			dialer.Control = control.Append(dialer.Control, control.RoutingMark(defaultOptions.RoutingMark))
-			listener.Control = control.Append(listener.Control, control.RoutingMark(defaultOptions.RoutingMark))
+			dialer.Control = control.Append(dialer.Control, setMarkWrapper(networkManager, defaultOptions.RoutingMark, true))
+			listener.Control = control.Append(listener.Control, setMarkWrapper(networkManager, defaultOptions.RoutingMark, true))
 		}
 	}
+	if networkManager != nil {
+		markFunc := networkManager.AutoRedirectOutputMarkFunc()
+		dialer.Control = control.Append(dialer.Control, markFunc)
+		listener.Control = control.Append(listener.Control, markFunc)
+	}
 	if options.ReuseAddr {
 		listener.Control = control.Append(listener.Control, control.ReuseAddr())
 	}
@@ -210,6 +208,22 @@ func NewDefault(ctx context.Context, options option.DialerOptions) (*DefaultDial
 	}, nil
 }
 
+func setMarkWrapper(networkManager adapter.NetworkManager, mark uint32, isDefault bool) control.Func {
+	if networkManager == nil {
+		return control.RoutingMark(mark)
+	}
+	return func(network, address string, conn syscall.RawConn) error {
+		if networkManager.AutoRedirectOutputMark() != 0 {
+			if isDefault {
+				return E.New("`route.default_mark` is conflict with `tun.auto_redirect`")
+			} else {
+				return E.New("`routing_mark` is conflict with `tun.auto_redirect`")
+			}
+		}
+		return control.RoutingMark(mark)(network, address, conn)
+	}
+}
+
 func (d *DefaultDialer) DialContext(ctx context.Context, network string, address M.Socksaddr) (net.Conn, error) {
 	if !address.IsValid() {
 		return nil, E.New("invalid address")
@@ -259,7 +273,7 @@ func (d *DefaultDialer) DialParallelInterface(ctx context.Context, network strin
 	} else {
 		dialer = d.udpDialer4
 	}
-	fastFallback := time.Now().Sub(d.networkLastFallback.Load()) < C.TCPTimeout
+	fastFallback := time.Since(d.networkLastFallback.Load()) < C.TCPTimeout
 	var (
 		conn      net.Conn
 		isPrimary bool
@@ -301,6 +315,14 @@ 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)
+	} else {
+		return dialerFromTCPDialer(d.dialer4)
+	}
+}
+
 func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destination M.Socksaddr, strategy *C.NetworkStrategy, interfaceType []C.InterfaceType, fallbackInterfaceType []C.InterfaceType, fallbackDelay time.Duration) (net.PacketConn, error) {
 	if strategy == nil {
 		strategy = d.networkStrategy
@@ -335,7 +357,17 @@ func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destina
 }
 
 func (d *DefaultDialer) ListenPacketCompat(network, address string) (net.PacketConn, error) {
-	return d.udpListener.ListenPacket(context.Background(), network, address)
+	udpListener := d.udpListener
+	udpListener.Control = control.Append(udpListener.Control, func(network, address string, conn syscall.RawConn) error {
+		for _, wgControlFn := range WgControlFns {
+			err := wgControlFn(network, address, conn)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+	return udpListener.ListenPacket(context.Background(), network, address)
 }
 
 func trackConn(conn net.Conn, err error) (net.Conn, error) {

common/dialer/detour.go

@@ -19,14 +19,18 @@ type DirectDialer interface {
 type DetourDialer struct {
 	outboundManager adapter.OutboundManager
 	detour          string
-	directResolver  bool
+	legacyDNSDialer bool
 	dialer          N.Dialer
 	initOnce        sync.Once
 	initErr         error
 }
 
-func NewDetour(outboundManager adapter.OutboundManager, detour string) N.Dialer {
-	return &DetourDialer{outboundManager: outboundManager, detour: detour}
+func NewDetour(outboundManager adapter.OutboundManager, detour string, legacyDNSDialer bool) N.Dialer {
+	return &DetourDialer{
+		outboundManager: outboundManager,
+		detour:          detour,
+		legacyDNSDialer: legacyDNSDialer,
+	}
 }
 
 func InitializeDetour(dialer N.Dialer) error {
@@ -48,10 +52,12 @@ func (d *DetourDialer) init() {
 		d.initErr = E.New("outbound detour not found: ", d.detour)
 		return
 	}
-	if directDialer, isDirect := dialer.(DirectDialer); isDirect {
-		if directDialer.IsEmpty() {
-			d.initErr = E.New("detour to an empty direct outbound makes no sense")
-			return
+	if !d.legacyDNSDialer {
+		if directDialer, isDirect := dialer.(DirectDialer); isDirect {
+			if directDialer.IsEmpty() {
+				d.initErr = E.New("detour to an empty direct outbound makes no sense")
+				return
+			}
 		}
 	}
 	d.dialer = dialer

common/dialer/dialer.go

@@ -23,6 +23,8 @@ type Options struct {
 	DirectResolver   bool
 	ResolverOnDetour bool
 	NewDialer        bool
+	LegacyDNSDialer  bool
+	DirectOutbound   bool
 }
 
 // TODO: merge with NewWithOptions
@@ -45,7 +47,7 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 		if outboundManager == nil {
 			return nil, E.New("missing outbound manager")
 		}
-		dialer = NewDetour(outboundManager, dialOptions.Detour)
+		dialer = NewDetour(outboundManager, dialOptions.Detour, options.LegacyDNSDialer)
 	} else {
 		dialer, err = NewDefault(options.Context, dialOptions)
 		if err != nil {
@@ -81,6 +83,7 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			dialOptions.DomainStrategy != option.DomainStrategy(C.DomainStrategyAsIS) {
 				//nolint:staticcheck
 				strategy = C.DomainStrategy(dialOptions.DomainStrategy)
+				deprecated.Report(options.Context, deprecated.OptionLegacyDomainStrategyOptions)
 			}
 			server = dialOptions.DomainResolver.Server
 			dnsQueryOptions = adapter.DNSQueryOptions{
@@ -93,22 +96,31 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
 		} else if options.DirectResolver {
 			return nil, E.New("missing domain resolver for domain server address")
-		} else if defaultOptions.DomainResolver != "" {
-			dnsQueryOptions = defaultOptions.DomainResolveOptions
-			transport, loaded := dnsTransport.Transport(defaultOptions.DomainResolver)
-			if !loaded {
-				return nil, E.New("default domain resolver not found: " + defaultOptions.DomainResolver)
-			}
-			dnsQueryOptions.Transport = transport
-			resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
-		} else if options.NewDialer {
-			return nil, E.New("missing domain resolver for domain server address")
 		} else {
-			transports := dnsTransport.Transports()
-			if len(transports) < 2 {
-				dnsQueryOptions.Transport = dnsTransport.Default()
+			if defaultOptions.DomainResolver != "" {
+				dnsQueryOptions = defaultOptions.DomainResolveOptions
+				transport, loaded := dnsTransport.Transport(defaultOptions.DomainResolver)
+				if !loaded {
+					return nil, E.New("default domain resolver not found: " + defaultOptions.DomainResolver)
+				}
+				dnsQueryOptions.Transport = transport
+				resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
 			} else {
-				deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
+				transports := dnsTransport.Transports()
+				if len(transports) < 2 {
+					dnsQueryOptions.Transport = dnsTransport.Default()
+				} else if options.NewDialer {
+					return nil, E.New("missing domain resolver for domain server address")
+				} else {
+					deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
+				}
+			}
+			if
+			//nolint:staticcheck
+			dialOptions.DomainStrategy != option.DomainStrategy(C.DomainStrategyAsIS) {
+				//nolint:staticcheck
+				dnsQueryOptions.Strategy = C.DomainStrategy(dialOptions.DomainStrategy)
+				deprecated.Report(options.Context, deprecated.OptionLegacyDomainStrategyOptions)
 			}
 		}
 		dialer = NewResolveDialer(

common/dialer/tfo.go

@@ -8,11 +8,11 @@ import (
 	"net"
 	"os"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/bufio"
-	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
@@ -24,9 +24,11 @@ type slowOpenConn struct {
 	ctx         context.Context
 	network     string
 	destination M.Socksaddr
-	conn        net.Conn
+	conn        atomic.Pointer[net.TCPConn]
 	create      chan struct{}
+	done        chan struct{}
 	access      sync.Mutex
+	closeOnce   sync.Once
 	err         error
 }
 
@@ -45,26 +47,30 @@ func DialSlowContext(dialer *tcpDialer, ctx context.Context, network string, des
 		network:     network,
 		destination: destination,
 		create:      make(chan struct{}),
+		done:        make(chan struct{}),
 	}, nil
 }
 
 func (c *slowOpenConn) Read(b []byte) (n int, err error) {
-	if c.conn == nil {
-		select {
-		case <-c.create:
-			if c.err != nil {
-				return 0, c.err
-			}
-		case <-c.ctx.Done():
-			return 0, c.ctx.Err()
-		}
+	conn := c.conn.Load()
+	if conn != nil {
+		return conn.Read(b)
+	}
+	select {
+	case <-c.create:
+		if c.err != nil {
+			return 0, c.err
+		}
+		return c.conn.Load().Read(b)
+	case <-c.done:
+		return 0, os.ErrClosed
 	}
-	return c.conn.Read(b)
 }
 
 func (c *slowOpenConn) Write(b []byte) (n int, err error) {
-	if c.conn != nil {
-		return c.conn.Write(b)
+	tcpConn := c.conn.Load()
+	if tcpConn != nil {
+		return tcpConn.Write(b)
 	}
 	c.access.Lock()
 	defer c.access.Unlock()
@@ -73,13 +79,16 @@ func (c *slowOpenConn) Write(b []byte) (n int, err error) {
 		if c.err != nil {
 			return 0, c.err
 		}
-		return c.conn.Write(b)
+		return c.conn.Load().Write(b)
+	case <-c.done:
+		return 0, os.ErrClosed
 	default:
 	}
-	c.conn, err = c.dialer.DialContext(c.ctx, c.network, c.destination.String(), b)
+	conn, err := c.dialer.DialContext(c.ctx, c.network, c.destination.String(), b)
 	if err != nil {
-		c.conn = nil
-		c.err = E.Cause(err, "dial tcp fast open")
+		c.err = err
+	} else {
+		c.conn.Store(conn.(*net.TCPConn))
 	}
 	n = len(b)
 	close(c.create)
@@ -87,74 +96,87 @@ func (c *slowOpenConn) Write(b []byte) (n int, err error) {
 }
 
 func (c *slowOpenConn) Close() error {
-	return common.Close(c.conn)
+	c.closeOnce.Do(func() {
+		close(c.done)
+		conn := c.conn.Load()
+		if conn != nil {
+			conn.Close()
+		}
+	})
+	return nil
 }
 
 func (c *slowOpenConn) LocalAddr() net.Addr {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		return M.Socksaddr{}
 	}
-	return c.conn.LocalAddr()
+	return conn.LocalAddr()
 }
 
 func (c *slowOpenConn) RemoteAddr() net.Addr {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		return M.Socksaddr{}
 	}
-	return c.conn.RemoteAddr()
+	return conn.RemoteAddr()
 }
 
 func (c *slowOpenConn) SetDeadline(t time.Time) error {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		return os.ErrInvalid
 	}
-	return c.conn.SetDeadline(t)
+	return conn.SetDeadline(t)
 }
 
 func (c *slowOpenConn) SetReadDeadline(t time.Time) error {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		return os.ErrInvalid
 	}
-	return c.conn.SetReadDeadline(t)
+	return conn.SetReadDeadline(t)
 }
 
 func (c *slowOpenConn) SetWriteDeadline(t time.Time) error {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		return os.ErrInvalid
 	}
-	return c.conn.SetWriteDeadline(t)
+	return conn.SetWriteDeadline(t)
 }
 
 func (c *slowOpenConn) Upstream() any {
-	return c.conn
+	return common.PtrOrNil(c.conn.Load())
 }
 
 func (c *slowOpenConn) ReaderReplaceable() bool {
-	return c.conn != nil
+	return c.conn.Load() != nil
 }
 
 func (c *slowOpenConn) WriterReplaceable() bool {
-	return c.conn != nil
+	return c.conn.Load() != nil
 }
 
 func (c *slowOpenConn) LazyHeadroom() bool {
-	return c.conn == nil
+	return c.conn.Load() == nil
 }
 
 func (c *slowOpenConn) NeedHandshake() bool {
-	return c.conn == nil
+	return c.conn.Load() == nil
 }
 
 func (c *slowOpenConn) WriteTo(w io.Writer) (n int64, err error) {
-	if c.conn == nil {
+	conn := c.conn.Load()
+	if conn == nil {
 		select {
 		case <-c.create:
 			if c.err != nil {
 				return 0, c.err
 			}
-		case <-c.ctx.Done():
-			return 0, c.ctx.Err()
+		case <-c.done:
+			return 0, c.err
 		}
 	}
-	return bufio.Copy(w, c.conn)
+	return bufio.Copy(w, c.conn.Load())
 }

common/humanize/bytes.go

@@ -1,158 +0,0 @@
-package humanize
-
-import (
-	"fmt"
-	"math"
-	"strconv"
-	"strings"
-	"unicode"
-)
-
-// IEC Sizes.
-// kibis of bits
-const (
-	Byte = 1 << (iota * 10)
-	KiByte
-	MiByte
-	GiByte
-	TiByte
-	PiByte
-	EiByte
-)
-
-// SI Sizes.
-const (
-	IByte = 1
-	KByte = IByte * 1000
-	MByte = KByte * 1000
-	GByte = MByte * 1000
-	TByte = GByte * 1000
-	PByte = TByte * 1000
-	EByte = PByte * 1000
-)
-
-var defaultSizeTable = map[string]uint64{
-	"b":   Byte,
-	"kib": KiByte,
-	"kb":  KByte,
-	"mib": MiByte,
-	"mb":  MByte,
-	"gib": GiByte,
-	"gb":  GByte,
-	"tib": TiByte,
-	"tb":  TByte,
-	"pib": PiByte,
-	"pb":  PByte,
-	"eib": EiByte,
-	"eb":  EByte,
-	// Without suffix
-	"":   Byte,
-	"ki": KiByte,
-	"k":  KByte,
-	"mi": MiByte,
-	"m":  MByte,
-	"gi": GiByte,
-	"g":  GByte,
-	"ti": TiByte,
-	"t":  TByte,
-	"pi": PiByte,
-	"p":  PByte,
-	"ei": EiByte,
-	"e":  EByte,
-}
-
-var memorysSizeTable = map[string]uint64{
-	"b":  Byte,
-	"kb": KiByte,
-	"mb": MiByte,
-	"gb": GiByte,
-	"tb": TiByte,
-	"pb": PiByte,
-	"eb": EiByte,
-	"":   Byte,
-	"k":  KiByte,
-	"m":  MiByte,
-	"g":  GiByte,
-	"t":  TiByte,
-	"p":  PiByte,
-	"e":  EiByte,
-}
-
-var (
-	defaultSizes = []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"}
-	iSizes       = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"}
-)
-
-func Bytes(s uint64) string {
-	return humanateBytes(s, 1000, defaultSizes)
-}
-
-func MemoryBytes(s uint64) string {
-	return humanateBytes(s, 1024, defaultSizes)
-}
-
-func IBytes(s uint64) string {
-	return humanateBytes(s, 1024, iSizes)
-}
-
-func logn(n, b float64) float64 {
-	return math.Log(n) / math.Log(b)
-}
-
-func humanateBytes(s uint64, base float64, sizes []string) string {
-	if s < 10 {
-		return fmt.Sprintf("%d B", s)
-	}
-	e := math.Floor(logn(float64(s), base))
-	suffix := sizes[int(e)]
-	val := math.Floor(float64(s)/math.Pow(base, e)*10+0.5) / 10
-	f := "%.0f %s"
-	if val < 10 {
-		f = "%.1f %s"
-	}
-
-	return fmt.Sprintf(f, val, suffix)
-}
-
-func ParseBytes(s string) (uint64, error) {
-	return parseBytes0(s, defaultSizeTable)
-}
-
-func ParseMemoryBytes(s string) (uint64, error) {
-	return parseBytes0(s, memorysSizeTable)
-}
-
-func parseBytes0(s string, sizeTable map[string]uint64) (uint64, error) {
-	lastDigit := 0
-	hasComma := false
-	for _, r := range s {
-		if !(unicode.IsDigit(r) || r == '.' || r == ',') {
-			break
-		}
-		if r == ',' {
-			hasComma = true
-		}
-		lastDigit++
-	}
-
-	num := s[:lastDigit]
-	if hasComma {
-		num = strings.Replace(num, ",", "", -1)
-	}
-
-	f, err := strconv.ParseFloat(num, 64)
-	if err != nil {
-		return 0, err
-	}
-
-	extra := strings.ToLower(strings.TrimSpace(s[lastDigit:]))
-	if m, ok := sizeTable[extra]; ok {
-		f *= float64(m)
-		if f >= math.MaxUint64 {
-			return 0, fmt.Errorf("too large: %v", s)
-		}
-		return uint64(f), nil
-	}
-
-	return 0, fmt.Errorf("unhandled size name: %v", extra)
-}

common/ktls/ktls.go

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

common/ktls/ktls_alert.go

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

common/ktls/ktls_cipher_suites_linux.go

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

common/ktls/ktls_close.go

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

common/ktls/ktls_const.go

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

common/ktls/ktls_handshake_messages.go

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

common/ktls/ktls_key_update.go

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

common/ktls/ktls_linux.go

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

common/ktls/ktls_prf.go

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

common/ktls/ktls_read.go

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

common/ktls/ktls_read_wait.go

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

common/ktls/ktls_stub.go

@@ -0,0 +1,15 @@
+//go:build !linux || !go1.25 || without_badtls
+
+package ktls
+
+import (
+	"context"
+	"os"
+
+	"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
+}

common/ktls/ktls_write.go

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

common/listener/listener.go

@@ -32,6 +32,7 @@ type Listener struct {
 	disablePacketOutput      bool
 	setSystemProxy           bool
 	systemProxySOCKS         bool
+	tproxy                   bool
 
 	tcpListener          net.Listener
 	systemProxy          settings.SystemProxy
@@ -54,6 +55,7 @@ type Options struct {
 	DisablePacketOutput      bool
 	SetSystemProxy           bool
 	SystemProxySOCKS         bool
+	TProxy                   bool
 }
 
 func New(
@@ -71,6 +73,7 @@ func New(
 		disablePacketOutput:      options.DisablePacketOutput,
 		setSystemProxy:           options.SetSystemProxy,
 		systemProxySOCKS:         options.SystemProxySOCKS,
+		tproxy:                   options.TProxy,
 	}
 }
 

common/listener/listener_tcp.go

@@ -3,14 +3,19 @@ package listener
 import (
 	"net"
 	"net/netip"
+	"strings"
+	"syscall"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/redir"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
 
 	"github.com/metacubex/tfo-go"
 )
@@ -23,6 +28,15 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 	var err error
 	bindAddr := M.SocksaddrFrom(l.listenOptions.Listen.Build(netip.AddrFrom4([4]byte{127, 0, 0, 1})), l.listenOptions.ListenPort)
 	var listenConfig net.ListenConfig
+	if l.listenOptions.BindInterface != "" {
+		listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+	}
+	if l.listenOptions.RoutingMark != 0 {
+		listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+	}
+	if l.listenOptions.ReuseAddr {
+		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+	}
 	if l.listenOptions.TCPKeepAlive >= 0 {
 		keepIdle := time.Duration(l.listenOptions.TCPKeepAlive)
 		if keepIdle == 0 {
@@ -40,6 +54,13 @@ func (l *Listener) ListenTCP() (net.Listener, error) {
 		}
 		setMultiPathTCP(&listenConfig)
 	}
+	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, !strings.HasSuffix(network, "4"), false)
+			})
+		})
+	}
 	tcpListener, err := ListenNetworkNamespace[net.Listener](l.listenOptions.NetNs, func() (net.Listener, error) {
 		if l.listenOptions.TCPFastOpen {
 			var tfoConfig tfo.ListenConfig

common/listener/listener_udp.go

@@ -5,17 +5,31 @@ import (
 	"net"
 	"net/netip"
 	"os"
+	"strings"
+	"syscall"
 
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/redir"
 	"github.com/sagernet/sing/common/buf"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
 )
 
 func (l *Listener) ListenUDP() (net.PacketConn, error) {
 	bindAddr := M.SocksaddrFrom(l.listenOptions.Listen.Build(netip.AddrFrom4([4]byte{127, 0, 0, 1})), l.listenOptions.ListenPort)
-	var lc net.ListenConfig
+	var listenConfig net.ListenConfig
+	if l.listenOptions.BindInterface != "" {
+		listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+	}
+	if l.listenOptions.RoutingMark != 0 {
+		listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+	}
+	if l.listenOptions.ReuseAddr {
+		listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+	}
 	var udpFragment bool
 	if l.listenOptions.UDPFragment != nil {
 		udpFragment = *l.listenOptions.UDPFragment
@@ -23,10 +37,17 @@ func (l *Listener) ListenUDP() (net.PacketConn, error) {
 		udpFragment = l.listenOptions.UDPFragmentDefault
 	}
 	if !udpFragment {
-		lc.Control = control.Append(lc.Control, control.DisableUDPFragment())
+		listenConfig.Control = control.Append(listenConfig.Control, control.DisableUDPFragment())
+	}
+	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, !strings.HasSuffix(network, "4"), true)
+			})
+		})
 	}
 	udpConn, err := ListenNetworkNamespace[net.PacketConn](l.listenOptions.NetNs, func() (net.PacketConn, error) {
-		return lc.ListenPacket(l.ctx, M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.String())
+		return listenConfig.ListenPacket(l.ctx, M.NetworkFromNetAddr(N.NetworkUDP, bindAddr.Addr), bindAddr.String())
 	})
 	if err != nil {
 		return nil, err
@@ -37,9 +58,32 @@ func (l *Listener) ListenUDP() (net.PacketConn, error) {
 	return udpConn, err
 }
 
-func (l *Listener) ListenPacket(ctx context.Context, network string, address string) (net.PacketConn, error) {
+func (l *Listener) DialContext(dialer net.Dialer, ctx context.Context, network string, address string) (net.Conn, error) {
+	return ListenNetworkNamespace[net.Conn](l.listenOptions.NetNs, func() (net.Conn, error) {
+		if l.listenOptions.BindInterface != "" {
+			dialer.Control = control.Append(dialer.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+		}
+		if l.listenOptions.RoutingMark != 0 {
+			dialer.Control = control.Append(dialer.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+		}
+		if l.listenOptions.ReuseAddr {
+			dialer.Control = control.Append(dialer.Control, control.ReuseAddr())
+		}
+		return dialer.DialContext(ctx, network, address)
+	})
+}
+
+func (l *Listener) ListenPacket(listenConfig net.ListenConfig, ctx context.Context, network string, address string) (net.PacketConn, error) {
 	return ListenNetworkNamespace[net.PacketConn](l.listenOptions.NetNs, func() (net.PacketConn, error) {
-		var listenConfig net.ListenConfig
+		if l.listenOptions.BindInterface != "" {
+			listenConfig.Control = control.Append(listenConfig.Control, control.BindToInterface(service.FromContext[adapter.NetworkManager](l.ctx).InterfaceFinder(), l.listenOptions.BindInterface, -1))
+		}
+		if l.listenOptions.RoutingMark != 0 {
+			listenConfig.Control = control.Append(listenConfig.Control, control.RoutingMark(uint32(l.listenOptions.RoutingMark)))
+		}
+		if l.listenOptions.ReuseAddr {
+			listenConfig.Control = control.Append(listenConfig.Control, control.ReuseAddr())
+		}
 		return listenConfig.ListenPacket(ctx, network, address)
 	})
 }
@@ -121,9 +165,8 @@ func (l *Listener) loopUDPOut() {
 				if l.shutdown.Load() && E.IsClosed(err) {
 					return
 				}
-				l.udpConn.Close()
 				l.logger.Error("udp listener write back: ", destination, ": ", err)
-				return
+				continue
 			}
 			continue
 		case <-l.packetOutboundClosed:

common/process/searcher_darwin.go

@@ -76,6 +76,8 @@ func findProcessName(network string, ip netip.Addr, port int) (string, error) {
 		// rup8(sizeof(xtcpcb_n))
 		itemSize += 208
 	}
+
+	var fallbackUDPProcess string
 	// skip the first xinpgen(24 bytes) block
 	for i := 24; i+itemSize <= len(buf); i += itemSize {
 		// offset of xinpcb_n and xsocket_n
@@ -90,24 +92,34 @@ func findProcessName(network string, ip netip.Addr, port int) (string, error) {
 		flag := buf[inp+44]
 
 		var srcIP netip.Addr
+		srcIsIPv4 := false
 		switch {
 		case flag&0x1 > 0 && isIPv4:
 			// ipv4
-			srcIP = netip.AddrFrom4(*(*[4]byte)(buf[inp+76 : inp+80]))
+			srcIP = netip.AddrFrom4([4]byte(buf[inp+76 : inp+80]))
+			srcIsIPv4 = true
 		case flag&0x2 > 0 && !isIPv4:
 			// ipv6
-			srcIP = netip.AddrFrom16(*(*[16]byte)(buf[inp+64 : inp+80]))
+			srcIP = netip.AddrFrom16([16]byte(buf[inp+64 : inp+80]))
 		default:
 			continue
 		}
 
-		if ip != srcIP {
-			continue
+		if ip == srcIP {
+			// xsocket_n.so_last_pid
+			pid := readNativeUint32(buf[so+68 : so+72])
+			return getExecPathFromPID(pid)
 		}
 
-		// xsocket_n.so_last_pid
-		pid := readNativeUint32(buf[so+68 : so+72])
-		return getExecPathFromPID(pid)
+		// udp packet connection may be not equal with srcIP
+		if network == N.NetworkUDP && srcIP.IsUnspecified() && isIPv4 == srcIsIPv4 {
+			pid := readNativeUint32(buf[so+68 : so+72])
+			fallbackUDPProcess, _ = getExecPathFromPID(pid)
+		}
+	}
+
+	if network == N.NetworkUDP && len(fallbackUDPProcess) > 0 {
+		return fallbackUDPProcess, nil
 	}
 
 	return "", ErrNotFound

common/redir/tproxy_linux.go

@@ -12,7 +12,7 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-func TProxy(fd uintptr, isIPv6 bool) error {
+func TProxy(fd uintptr, isIPv6 bool, isUDP bool) error {
 	err := syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
 	if err == nil {
 		err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_TRANSPARENT, 1)
@@ -20,11 +20,13 @@ func TProxy(fd uintptr, isIPv6 bool) error {
 	if err == nil && isIPv6 {
 		err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, unix.IPV6_TRANSPARENT, 1)
 	}
-	if err == nil {
-		err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_RECVORIGDSTADDR, 1)
-	}
-	if err == nil && isIPv6 {
-		err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, unix.IPV6_RECVORIGDSTADDR, 1)
+	if isUDP {
+		if err == nil {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_RECVORIGDSTADDR, 1)
+		}
+		if err == nil && isIPv6 {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, unix.IPV6_RECVORIGDSTADDR, 1)
+		}
 	}
 	return err
 }

common/redir/tproxy_other.go

@@ -9,7 +9,7 @@ import (
 	"github.com/sagernet/sing/common/control"
 )
 
-func TProxy(fd uintptr, isIPv6 bool) error {
+func TProxy(fd uintptr, isIPv6 bool, isUDP bool) error {
 	return os.ErrInvalid
 }
 

common/sniff/bittorrent.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
+	E "github.com/sagernet/sing/common/exceptions"
 )
 
 const (
@@ -23,21 +24,26 @@ func BitTorrent(_ context.Context, metadata *adapter.InboundContext, reader io.R
 	var first byte
 	err := binary.Read(reader, binary.BigEndian, &first)
 	if err != nil {
-		return err
+		return E.Cause1(ErrNeedMoreData, err)
 	}
 
 	if first != 19 {
 		return os.ErrInvalid
 	}
 
+	const header = "BitTorrent protocol"
 	var protocol [19]byte
-	_, err = reader.Read(protocol[:])
-	if err != nil {
-		return err
-	}
-	if string(protocol[:]) != "BitTorrent protocol" {
+	var n int
+	n, err = reader.Read(protocol[:])
+	if string(protocol[:n]) != header[:n] {
 		return os.ErrInvalid
 	}
+	if err != nil {
+		return E.Cause1(ErrNeedMoreData, err)
+	}
+	if n < 19 {
+		return ErrNeedMoreData
+	}
 
 	metadata.Protocol = C.ProtocolBitTorrent
 	return nil
@@ -67,7 +73,9 @@ func UTP(_ context.Context, metadata *adapter.InboundContext, packet []byte) err
 		if err != nil {
 			return err
 		}
-
+		if extension > 0x04 {
+			return os.ErrInvalid
+		}
 		var length byte
 		err = binary.Read(reader, binary.BigEndian, &length)
 		if err != nil {

common/sniff/bittorrent_test.go

@@ -32,6 +32,27 @@ func TestSniffBittorrent(t *testing.T) {
 	}
 }
 
+func TestSniffIncompleteBittorrent(t *testing.T) {
+	t.Parallel()
+
+	pkt, err := hex.DecodeString("13426974546f7272656e74")
+	require.NoError(t, err)
+	var metadata adapter.InboundContext
+	err = sniff.BitTorrent(context.TODO(), &metadata, bytes.NewReader(pkt))
+	require.ErrorIs(t, err, sniff.ErrNeedMoreData)
+}
+
+func TestSniffNotBittorrent(t *testing.T) {
+	t.Parallel()
+
+	pkt, err := hex.DecodeString("13426974546f7272656e75")
+	require.NoError(t, err)
+	var metadata adapter.InboundContext
+	err = sniff.BitTorrent(context.TODO(), &metadata, bytes.NewReader(pkt))
+	require.NotEmpty(t, err)
+	require.NotErrorIs(t, err, sniff.ErrNeedMoreData)
+}
+
 func TestSniffUTP(t *testing.T) {
 	t.Parallel()
 
@@ -71,3 +92,19 @@ func TestSniffUDPTracker(t *testing.T) {
 		require.Equal(t, C.ProtocolBitTorrent, metadata.Protocol)
 	}
 }
+
+func TestSniffNotUTP(t *testing.T) {
+	t.Parallel()
+
+	packets := []string{
+		"0102736470696e674958d580121500000000000079aaed6717a39c27b07c0c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+	}
+	for _, pkt := range packets {
+		pkt, err := hex.DecodeString(pkt)
+		require.NoError(t, err)
+
+		var metadata adapter.InboundContext
+		err = sniff.UTP(context.TODO(), &metadata, pkt)
+		require.Error(t, err)
+	}
+}