fix: config override error

* chore: add android branch auto sync

* chore: fix

* chore: fix missing

* chore: fix actions

* chore: write branch auto sync

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,82 @@
+name: Bug report
+description: Create a report to help us improve
+title: "[Bug] "
+body:
+  - type: checkboxes
+    id: ensure
+    attributes:
+      label: Verify steps
+      description: "
+在提交之前，请确认
+Please verify that you've followed these steps
+"
+      options:
+        - label: "
+确保你使用的是**本仓库**最新的的 clash 或 clash Alpha 版本
+Ensure you are using the latest version of Clash or Clash Premium from **this repository**.
+"
+          required: true
+        - label: "
+如果你可以自己 debug 并解决的话，提交 PR 吧
+Is this something you can **debug and fix**? Send a pull request! Bug fixes and documentation fixes are welcome.
+"
+          required: false
+        - label: "
+我已经在 [Issue Tracker](……/) 中找过我要提出的问题
+I have searched on the [issue tracker](……/) for a related issue.
+"
+          required: true
+        - label: "
+我已经使用 Alpha 分支版本测试过，问题依旧存在
+I have tested using the dev branch, and the issue still exists.
+"
+          required: true
+        - label: "
+我已经仔细看过 [Documentation](https://wiki.metacubex.one/) 并无法自行解决问题
+I have read the [documentation](https://wiki.metacubex.one/) and was unable to solve the issue.
+"
+          required: true
+        - label: "
+这是 Clash 核心的问题，并非我所使用的 Clash 衍生版本（如 OpenClash、KoolClash 等）的特定问题
+This is an issue of the Clash core *per se*, not to the derivatives of Clash, like OpenClash or KoolClash.
+"
+          required: true
+  - type: input
+    attributes:
+      label: Clash version
+      description: "use `clash -v`"
+    validations:
+      required: true
+  - type: dropdown
+    id: os
+    attributes:
+      label: What OS are you seeing the problem on?
+      multiple: true
+      options:
+        - macOS
+        - Windows
+        - Linux
+        - OpenBSD/FreeBSD
+  - type: textarea
+    attributes:
+      render: yaml
+      label: "Clash config"
+      description: "
+在下方附上 Clash core 配置文件，请确保配置文件中没有敏感信息（比如：服务器地址，密码，端口等）
+Paste the Clash core configuration file below, please make sure that there is no sensitive information in the configuration file (e.g., server address/url, password, port)
+"
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      render: shell
+      label: Clash log
+      description: "
+在下方附上 Clash Core 的日志，log level 使用 DEBUG
+Paste the Clash core log below with the log level set to `DEBUG`.
+"
+  - type: textarea
+    attributes:
+      label: Description
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,36 @@
+name: Feature request
+description: Suggest an idea for this project
+title: "[Feature] "
+body:
+  - type: checkboxes
+    id: ensure
+    attributes:
+      label: Verify steps
+      description: "
+在提交之前，请确认
+Please verify that you've followed these steps
+"
+      options:
+        - label: "
+我已经在 [Issue Tracker](……/) 中找过我要提出的请求
+I have searched on the [issue tracker](……/) for a related feature request.
+"
+          required: true
+        - label: "
+我已经仔细看过 [Documentation](https://wiki.metacubex.one/) 并无法找到这个功能
+I have read the [documentation](https://wiki.metacubex.one/) and was unable to solve the issue.
+"
+          required: true
+  - type: textarea
+    attributes:
+      label: Description
+      description: 请详细、清晰地表达你要提出的论述，例如这个问题如何影响到你？你想实现什么功能？目前 Clash Core 的行为是什麽？
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Possible Solution
+      description: "
+此项非必须，但是如果你有想法的话欢迎提出。
+Not obligatory, but suggest a fix/reason for the bug, or ideas how to implement the addition or change
+"

.github/release.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+FILENAMES=$(ls)
+for FILENAME in $FILENAMES
+do
+    if [[ ! ($FILENAME =~ ".exe" || $FILENAME =~ ".sh")]];then
+        gzip -S ".gz" $FILENAME
+    elif [[ $FILENAME =~ ".exe" ]];then
+        zip -m ${FILENAME%.*}.zip $FILENAME
+    else echo "skip $FILENAME"
+    fi
+done
+
+FILENAMES=$(ls)
+for FILENAME in $FILENAMES
+do
+    if [[ $FILENAME =~ ".zip" ]];then
+        echo "rename $FILENAME"
+        mv $FILENAME ${FILENAME%.*}-${VERSION}.zip
+    elif [[ $FILENAME =~ ".gz" ]];then
+        echo "rename $FILENAME"
+        mv $FILENAME ${FILENAME%.*}-${VERSION}.gz
+    else
+        echo "skip $FILENAME"
+    fi
+done

.github/rename-cgo.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+FILENAMES=$(ls)
+for FILENAME in $FILENAMES
+do
+    if [[ $FILENAME =~ "darwin-10.16-arm64" ]];then
+        echo "rename darwin-10.16-arm64 $FILENAME"
+        mv $FILENAME clash.meta-darwin-arm64-cgo
+    elif [[ $FILENAME =~ "darwin-10.16-amd64" ]];then
+        echo "rename darwin-10.16-amd64 $FILENAME"
+        mv $FILENAME clash.meta-darwin-amd64-cgo
+    elif [[ $FILENAME =~ "windows-4.0-386" ]];then
+        echo "rename windows 386 $FILENAME"
+        mv $FILENAME clash.meta-windows-386-cgo.exe
+    elif [[ $FILENAME =~ "windows-4.0-amd64" ]];then
+        echo "rename windows amd64 $FILENAME"
+        mv $FILENAME clash.meta-windows-amd64-cgo.exe
+    elif [[ $FILENAME =~ "clash.meta-linux-arm-5" ]];then
+        echo "rename clash.meta-linux-arm-5 $FILENAME"
+        mv $FILENAME clash.meta-linux-armv5-cgo
+    elif [[ $FILENAME =~ "clash.meta-linux-arm-6" ]];then
+        echo "rename clash.meta-linux-arm-6 $FILENAME"
+        mv $FILENAME clash.meta-linux-armv6-cgo
+    elif [[ $FILENAME =~ "clash.meta-linux-arm-7" ]];then
+        echo "rename clash.meta-linux-arm-7 $FILENAME"
+        mv $FILENAME clash.meta-linux-armv7-cgo
+    elif [[ $FILENAME =~ "linux" ]];then
+        echo "rename linux $FILENAME"
+        mv $FILENAME $FILENAME-cgo
+    elif [[ $FILENAME =~ "android" ]];then
+        echo "rename android $FILENAME"
+        mv $FILENAME $FILENAME-cgo
+    else echo "skip $FILENAME"
+    fi
+done

.github/workflows/android-branch-auto-sync.yml

@@ -0,0 +1,51 @@
+name: Android Branch Auto Sync
+on:
+  workflow_dispatch:
+  push:
+    paths-ignore:
+      - "docs/**"
+      - "README.md"
+      - ".github/ISSUE_TEMPLATE/**"
+    branches:
+      - Alpha
+      - android-open
+    tags:
+      - "v*"
+  pull_request_target:
+    branches:
+      - Alpha
+      - android-open
+      
+jobs:
+  update-dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      
+      - name: Configure Git
+        run: |
+          git config --global user.name 'GitHub Action'
+          git config --global user.email 'action@github.com'
+      
+      - name: Sync android-real with Alpha rebase android-open
+        run: |
+          git fetch origin
+          git checkout origin/Alpha -b android-real
+          git merge --squash origin/android-open
+          git commit -m "Android: patch"
+      
+      - name: Check for conflicts
+        run: |
+          CONFLICTS=$(git diff --name-only --diff-filter=U)
+          if [ ! -z "$CONFLICTS" ]; then
+            echo "There are conflicts in the following files:"
+            echo $CONFLICTS
+            exit 1
+          fi
+      
+      - name: Push changes
+        run: |
+          git push origin android-real --force

.github/workflows/build.yml

@@ -0,0 +1,350 @@
+name: Build
+on:
+  workflow_dispatch:
+  push:
+    paths-ignore:
+      - "docs/**"
+      - "README.md"
+      - ".github/ISSUE_TEMPLATE/**"
+    branches:
+      - Alpha
+    tags:
+      - "v*"
+  pull_request_target:
+    branches:
+      - Alpha
+      
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+  
+env:
+  REGISTRY: docker.io
+jobs:
+  Build:
+    permissions: write-all
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        job:
+          - {
+              type: "WithoutCGO",
+              target: "linux-amd64 linux-amd64-compatible",
+              id: "1",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "linux-armv5 linux-armv6 linux-armv7",
+              id: "2",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "linux-arm64 linux-mips64 linux-mips64le",
+              id: "3",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "linux-mips-softfloat linux-mips-hardfloat linux-mipsle-softfloat linux-mipsle-hardfloat",
+              id: "4",
+            }
+          - { type: "WithoutCGO", target: "linux-386 linux-riscv64", id: "5" }
+          - {
+              type: "WithoutCGO",
+              target: "freebsd-386 freebsd-amd64 freebsd-arm64",
+              id: "6",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "windows-amd64-compatible windows-amd64 windows-386",
+              id: "7",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "windows-arm64 windows-arm32v7",
+              id: "8",
+            }
+          - {
+              type: "WithoutCGO",
+              target: "darwin-amd64 darwin-arm64 android-arm64",
+              id: "9",
+            }
+          - { type: "WithCGO", target: "windows/*", id: "1" }
+          - { type: "WithCGO", target: "linux/386", id: "2" }
+          - { type: "WithCGO", target: "linux/amd64", id: "3" }
+          - { type: "WithCGO", target: "linux/arm64,linux/riscv64", id: "4" }
+          - { type: "WithCGO", target: "linux/arm,", id: "5" }
+          - { type: "WithCGO", target: "linux/arm-6,linux/arm-7", id: "6" }
+          - { type: "WithCGO", target: "linux/mips,linux/mipsle", id: "7" }
+          - { type: "WithCGO", target: "linux/mips64", id: "8" }
+          - { type: "WithCGO", target: "linux/mips64le", id: "9" }
+          - { type: "WithCGO", target: "darwin-10.16/*", id: "10" }
+          - { type: "WithCGO", target: "android", id: "11" }
+
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v3
+
+      - name: Set variables
+        run: echo "VERSION=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set variables
+        if: ${{github.ref_name=='Alpha'}}
+        run: echo "VERSION=alpha-$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set variables
+        if: ${{github.ref_name=='Beta'}}
+        run: echo "VERSION=beta-$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set variables
+        if: ${{github.ref_name=='Meta'}}
+        run: echo "VERSION=meta-$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set variables
+        if: ${{github.ref_name=='' || github.ref_type=='tag'}}
+        run: echo "VERSION=$(git describe --tags)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set ENV
+        run: |
+          sudo timedatectl set-timezone "Asia/Shanghai"
+          echo "NAME=clash.meta" >> $GITHUB_ENV
+          echo "REPO=${{ github.repository }}" >> $GITHUB_ENV
+          echo "ShortSHA=$(git rev-parse --short ${{ github.sha }})" >> $GITHUB_ENV
+          echo "BUILDTIME=$(date)" >> $GITHUB_ENV
+          echo "BRANCH=$(git rev-parse --abbrev-ref HEAD)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Set ENV
+        run: |
+          echo "TAGS=with_gvisor,with_lwip" >> $GITHUB_ENV
+          echo "LDFLAGS=-X 'github.com/Dreamacro/clash/constant.Version=${VERSION}' -X 'github.com/Dreamacro/clash/constant.BuildTime=${BUILDTIME}' -w -s -buildid=" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.21"
+          check-latest: true
+
+      - name: Test
+        if: ${{ matrix.job.id=='1' && matrix.job.type=='WithoutCGO' }}
+        run: |
+          go test ./...
+
+      - name: Build WithoutCGO
+        if: ${{ matrix.job.type=='WithoutCGO' }}
+        env:
+          NAME: Clash.Meta
+          BINDIR: bin
+        run: make -j$(($(nproc) + 1)) ${{ matrix.job.target }}
+
+      - uses: nttld/setup-ndk@v1
+        if: ${{ matrix.job.type=='WithCGO' && matrix.job.target=='android' }}
+        id: setup-ndk
+        with:
+          ndk-version: r26
+          add-to-path: false
+          local-cache: true
+
+      - name: Build Android
+        if: ${{ matrix.job.type=='WithCGO' && matrix.job.target=='android' }}
+        env:
+          ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
+        run: |
+          mkdir bin
+          CC=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android33-clang
+          CGO_ENABLED=1 CC=${CC} GOARCH=arm64 GOOS=android go build -tags ${TAGS} -trimpath -ldflags "${LDFLAGS}" -o bin/${NAME}-android-arm64
+
+      - name: Set up xgo
+        if: ${{ matrix.job.type=='WithCGO' && matrix.job.target!='android' }}
+        run: |
+          docker pull techknowlogick/xgo:latest
+          go install src.techknowlogick.com/xgo@latest
+
+      - name: Build by xgo
+        if: ${{ matrix.job.type=='WithCGO' && matrix.job.target!='android' }}
+        env:
+          ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
+        run: |
+          mkdir bin
+          xgo --targets="${{ matrix.job.target }}" --tags="${TAGS}" -ldflags="${LDFLAGS}" --out bin/${NAME} ./
+
+      - name: Rename
+        if: ${{ matrix.job.type=='WithCGO' }}
+        run: |
+          cd bin
+          ls -la
+          cp ../.github/rename-cgo.sh ./
+          bash ./rename-cgo.sh
+          rm ./rename-cgo.sh
+          ls -la
+          cd ..
+
+      - name: Zip
+        if: ${{  success() }}
+        run: |
+          cd bin
+          ls -la
+          chmod +x *
+          cp ../.github/release.sh ./
+          bash ./release.sh
+          rm ./release.sh
+          ls -la
+          cd ..
+
+      - name: Save version
+        run: echo ${VERSION} > bin/version.txt
+        shell: bash
+
+      - uses: actions/upload-artifact@v3
+        if: ${{  success() }}
+        with:
+          name: artifact
+          path: bin/
+
+  Upload-Prerelease:
+    permissions: write-all
+    if: ${{ github.ref_type=='branch' && github.event_name != 'pull_request' }}
+    needs: [Build]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: artifact
+          path: bin/
+
+      - name: Display structure of downloaded files
+        run: ls -R
+        working-directory: bin
+
+      - name: Delete current release assets
+        uses: 8Mi-Tech/delete-release-assets-action@main
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          tag: Prerelease-${{ github.ref_name }}
+          deleteOnlyFromDrafts: false
+
+      - name: Set Env
+        run: |
+          echo "BUILDTIME=$(TZ=Asia/Shanghai date)" >> $GITHUB_ENV
+        shell: bash
+
+      - name: Tag Repo
+        uses: richardsimko/update-tag@v1.0.6
+        with:
+          tag_name: Prerelease-${{ github.ref_name }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - run: |
+          cat > release.txt << 'EOF'
+          Release created at  ${{ env.BUILDTIME }}
+          Synchronize ${{ github.ref_name }} branch code updates, keeping only the latest version
+          <br>
+          [我应该下载哪个文件? / Which file should I download?](https://github.com/MetaCubeX/Clash.Meta/wiki/FAQ)
+          [查看文档 / Docs](https://metacubex.github.io/Meta-Docs/)
+          EOF
+
+      - name: Upload Prerelease
+        uses: softprops/action-gh-release@v1
+        if: ${{  success() }}
+        with:
+          tag_name: Prerelease-${{ github.ref_name }}
+          files: |
+            bin/*
+          prerelease: true
+          generate_release_notes: true
+          body_path: release.txt
+
+  Upload-Release:
+    permissions: write-all
+    if: ${{ github.ref_type=='tag' }}
+    needs: [Build]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: artifact
+          path: bin/
+
+      - name: Display structure of downloaded files
+        run: ls -R
+        working-directory: bin
+
+      - name: Upload Release
+        uses: softprops/action-gh-release@v1
+        if: ${{  success() }}
+        with:
+          tag_name: ${{ github.ref_name }}
+          files: bin/*
+          generate_release_notes: true
+
+  Docker:
+    if: ${{ github.event_name != 'pull_request'  }}
+    permissions: write-all
+    needs: [Build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: artifact
+          path: bin/
+
+      - name: Display structure of downloaded files
+        run: ls -R
+        working-directory: bin
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          version: latest
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ secrets.DOCKERHUB_ACCOUNT }}/${{secrets.DOCKERHUB_REPO}}
+      - name: Show files
+        run: |
+          ls .
+          ls bin/
+      - name: Log into registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          platforms: |
+            linux/386
+            linux/amd64
+            linux/arm64/v8
+            linux/arm/v7
+          #            linux/riscv64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/cmfa-update-deps-trigger.yml

@@ -0,0 +1,28 @@
+name: CMFA auto update-dependencies trigger
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*"
+  pull_request_target:
+    branches:
+      - Alpha
+      
+jobs:
+  update-dependencies:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: tibdex/github-app-token@v1
+        id: generate-token
+        with:
+          app_id: ${{ secrets.MAINTAINER_APPID }}
+          private_key: ${{ secrets.MAINTAINER_APP_PRIVATE_KEY }}
+      
+      - name: Trigger update-dependencies
+        run: |
+          curl -X POST https://api.github.com/repos/MetaCubeX/ClashMetaForAndroid/dispatches \
+            -H "Accept: application/vnd.github.everest-preview+json" \
+            -H "Authorization: token ${{ steps.generate-token.outputs.token }}" \
+            -d '{"event_type": "core-updated"}'
+      # Send "core-updated" to MetaCubeX/ClashMetaForAndroid to trigger update-dependencies
+    

.github/workflows/go.yml

@@ -1,44 +0,0 @@
-name: Go
-on: [push, pull_request]
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Setup Go
-        uses: actions/setup-go@v1
-        with:
-          go-version: 1.13.x
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v1
-      
-      - name: Cache go module
-        uses: actions/cache@v1
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
-      - name: Get dependencies and run test
-        run: |
-          go test ./...
-
-      - name: Build
-        if: startsWith(github.ref, 'refs/tags/')
-        env:
-          NAME: clash
-          BINDIR: bin
-        run: make -j releases
-
-      - name: Upload Release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          files: bin/*
-          draft: true
-          prerelease: true

.gitignore

@@ -12,7 +12,7 @@ bin/*
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-# dep
+# go mod vendor
 vendor
 
 # GoLand
@@ -20,3 +20,9 @@ vendor
 
 # macOS file
 .DS_Store
+
+# test suite
+test/config/cache*
+/output
+.vscode/
+.fleet/

.golangci.yaml

@@ -0,0 +1,17 @@
+linters:
+  disable-all: true
+  enable:
+    - gofumpt
+    - staticcheck
+    - govet
+    - gci
+
+linters-settings:
+  gci:
+    custom-order: true
+    sections:
+      - standard
+      - prefix(github.com/Dreamacro/clash)
+      - default
+  staticcheck:
+    go: '1.19'

Dockerfile

@@ -1,18 +1,27 @@
-FROM golang:alpine as builder
+FROM alpine:latest as builder
+ARG TARGETPLATFORM
+RUN echo "I'm building for $TARGETPLATFORM"
 
-RUN apk add --no-cache make git && \
-    wget http://geolite.maxmind.com/download/geoip/database/GeoLite2-Country.tar.gz -O /tmp/GeoLite2-Country.tar.gz && \
-    tar zxvf /tmp/GeoLite2-Country.tar.gz -C /tmp && \
-    mv /tmp/GeoLite2-Country_*/GeoLite2-Country.mmdb /Country.mmdb
-WORKDIR /clash-src
-COPY . /clash-src
-RUN go mod download && \
-    make linux-amd64 && \
-    mv ./bin/clash-linux-amd64 /clash
+RUN apk add --no-cache gzip && \
+    mkdir /clash-config && \
+    wget -O /clash-config/geoip.metadb https://fastly.jsdelivr.net/gh/MetaCubeX/meta-rules-dat@release/geoip.metadb && \
+    wget -O /clash-config/geosite.dat https://fastly.jsdelivr.net/gh/MetaCubeX/meta-rules-dat@release/geosite.dat && \
+    wget -O /clash-config/geoip.dat https://fastly.jsdelivr.net/gh/MetaCubeX/meta-rules-dat@release/geoip.dat
 
+COPY docker/file-name.sh /clash/file-name.sh
+WORKDIR /clash
+COPY bin/ bin/
+RUN FILE_NAME=`sh file-name.sh` && echo $FILE_NAME && \
+    FILE_NAME=`ls bin/ | egrep "$FILE_NAME.*"|awk NR==1` && echo $FILE_NAME && \
+    mv bin/$FILE_NAME clash.gz && gzip -d clash.gz && echo "$FILE_NAME" > /clash-config/test
 FROM alpine:latest
+LABEL org.opencontainers.image.source="https://github.com/MetaCubeX/Clash.Meta"
 
-RUN apk add --no-cache ca-certificates
-COPY --from=builder /Country.mmdb /root/.config/clash/
-COPY --from=builder /clash /
-ENTRYPOINT ["/clash"]
+RUN apk add --no-cache ca-certificates tzdata iptables
+
+VOLUME ["/root/.config/clash/"]
+
+COPY --from=builder /clash-config/ /root/.config/clash/
+COPY --from=builder /clash/clash /clash
+RUN chmod +x /clash
+ENTRYPOINT [ "/clash" ]

Makefile

@@ -1,42 +1,80 @@
-NAME=clash
+NAME=clash.meta
 BINDIR=bin
-VERSION=$(shell git describe --tags || echo "unknown version")
+BRANCH=$(shell git branch --show-current)
+ifeq ($(BRANCH),Alpha)
+VERSION=alpha-$(shell git rev-parse --short HEAD)
+else ifeq ($(BRANCH),Beta)
+VERSION=beta-$(shell git rev-parse --short HEAD)
+else ifeq ($(BRANCH),)
+VERSION=$(shell git describe --tags)
+else
+VERSION=$(shell git rev-parse --short HEAD)
+endif
+
 BUILDTIME=$(shell date -u)
-GOBUILD=CGO_ENABLED=0 go build -ldflags '-X "github.com/Dreamacro/clash/constant.Version=$(VERSION)" \
+GOBUILD=CGO_ENABLED=0 go build -tags with_gvisor -trimpath -ldflags '-X "github.com/Dreamacro/clash/constant.Version=$(VERSION)" \
 		-X "github.com/Dreamacro/clash/constant.BuildTime=$(BUILDTIME)" \
-		-w -s'
+		-w -s -buildid='
 
 PLATFORM_LIST = \
 	darwin-amd64 \
-	linux-386 \
+	darwin-arm64 \
+	linux-amd64-compatible \
 	linux-amd64 \
 	linux-armv5 \
 	linux-armv6 \
 	linux-armv7 \
-	linux-armv8 \
+	linux-arm64 \
+	linux-mips64 \
+	linux-mips64le \
 	linux-mips-softfloat \
 	linux-mips-hardfloat \
 	linux-mipsle-softfloat \
 	linux-mipsle-hardfloat \
-	linux-mips64 \
-	linux-mips64le \
+	linux-riscv64 \
+	linux-loong64 \
+	android-arm64 \
 	freebsd-386 \
-	freebsd-amd64
+	freebsd-amd64 \
+	freebsd-arm64
 
 WINDOWS_ARCH_LIST = \
 	windows-386 \
-	windows-amd64
+	windows-amd64-compatible \
+	windows-amd64 \
+	windows-arm64 \
+    windows-arm32v7
 
-all: linux-amd64 darwin-amd64 windows-amd64 # Most used
+all:linux-amd64 linux-arm64\
+	darwin-amd64 darwin-arm64\
+ 	windows-amd64 windows-arm64\
+
+
+darwin-all: darwin-amd64 darwin-arm64
+
+docker:
+	GOAMD64=v1 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 darwin-amd64:
-	GOARCH=amd64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+	GOARCH=amd64 GOOS=darwin GOAMD64=v3 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+darwin-amd64-compatible:
+	GOARCH=amd64 GOOS=darwin GOAMD64=v1 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+darwin-arm64:
+	GOARCH=arm64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 linux-386:
 	GOARCH=386 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 linux-amd64:
-	GOARCH=amd64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+	GOARCH=amd64 GOOS=linux GOAMD64=v3 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+linux-amd64-compatible:
+	GOARCH=amd64 GOOS=linux GOAMD64=v1 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+linux-arm64:
+	GOARCH=arm64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 linux-armv5:
 	GOARCH=arm GOOS=linux GOARM=5 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
@@ -47,9 +85,6 @@ linux-armv6:
 linux-armv7:
 	GOARCH=arm GOOS=linux GOARM=7 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
-linux-armv8:
-	GOARCH=arm64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
-
 linux-mips-softfloat:
 	GOARCH=mips GOMIPS=softfloat GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
@@ -68,17 +103,38 @@ linux-mips64:
 linux-mips64le:
 	GOARCH=mips64le GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
+linux-riscv64:
+	GOARCH=riscv64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+	
+linux-loong64:
+	GOARCH=loong64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+android-arm64:
+	GOARCH=arm64 GOOS=android $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
 freebsd-386:
 	GOARCH=386 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 freebsd-amd64:
-	GOARCH=amd64 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+	GOARCH=amd64 GOOS=freebsd GOAMD64=v3 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
+freebsd-arm64:
+	GOARCH=arm64 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
 windows-386:
 	GOARCH=386 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
 
 windows-amd64:
-	GOARCH=amd64 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
+	GOARCH=amd64 GOOS=windows GOAMD64=v3 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
+
+windows-amd64-compatible:
+	GOARCH=amd64 GOOS=windows GOAMD64=v1 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
+
+windows-arm64:
+	GOARCH=arm64 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
+
+windows-arm32v7:
+	GOARCH=arm GOOS=windows GOARM=7 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
 
 gz_releases=$(addsuffix .gz, $(PLATFORM_LIST))
 zip_releases=$(addsuffix .zip, $(WINDOWS_ARCH_LIST))
@@ -93,5 +149,20 @@ $(zip_releases): %.zip : %
 all-arch: $(PLATFORM_LIST) $(WINDOWS_ARCH_LIST)
 
 releases: $(gz_releases) $(zip_releases)
+
+vet:
+	go test ./...
+
+lint:
+	golangci-lint run ./...
+
 clean:
 	rm $(BINDIR)/*
+
+CLANG ?= clang-14
+CFLAGS := -O2 -g -Wall -Werror $(CFLAGS)
+
+ebpf: export BPF_CLANG := $(CLANG)
+ebpf: export BPF_CFLAGS := $(CFLAGS)
+ebpf:
+	cd component/ebpf/ && go generate ./...

README.md

@@ -1,321 +1,101 @@
 <h1 align="center">
-  <img src="https://github.com/Dreamacro/clash/raw/master/docs/logo.png" alt="Clash" width="200">
-  <br>Clash<br>
+  <img src="Meta.png" alt="Meta Kennel" width="200">
+  <br>Meta Kernel<br>
 </h1>
 
-<h4 align="center">A rule-based tunnel in Go.</h4>
+<h3 align="center">Another Clash Kernel.</h3>
 
 <p align="center">
-  <a href="https://github.com/Dreamacro/clash/actions">
-    <img src="https://img.shields.io/github/workflow/status/Dreamacro/clash/Go?style=flat-square" alt="Github Actions">
+  <a href="https://goreportcard.com/report/github.com/Clash-Mini/Clash.Meta">
+    <img src="https://goreportcard.com/badge/github.com/Clash-Mini/Clash.Meta?style=flat-square">
   </a>
-  <a href="https://goreportcard.com/report/github.com/Dreamacro/clash">
-    <img src="https://goreportcard.com/badge/github.com/Dreamacro/clash?style=flat-square">
+  <img src="https://img.shields.io/github/go-mod/go-version/Dreamacro/clash?style=flat-square">
+  <a href="https://github.com/Clash-Mini/Clash.Meta/releases">
+    <img src="https://img.shields.io/github/release/Clash-Mini/Clash.Meta/all.svg?style=flat-square">
   </a>
-  <a href="https://github.com/Dreamacro/clash/releases">
-    <img src="https://img.shields.io/github/release/Dreamacro/clash/all.svg?style=flat-square">
+  <a href="https://github.com/Clash-Mini/Clash.Meta">
+    <img src="https://img.shields.io/badge/release-Meta-00b4f0?style=flat-square">
   </a>
 </p>
 
 ## Features
 
-- Local HTTP/HTTPS/SOCKS server
-- GeoIP rule support
-- Supports Vmess, Shadowsocks, Snell and SOCKS5 protocol
-- Supports Netfilter TCP redirecting
-- Comprehensive HTTP API
+- Local HTTP/HTTPS/SOCKS server with authentication support
+- VMess, VLESS, Shadowsocks, Trojan, Snell, TUIC, Hysteria protocol support
+- Built-in DNS server that aims to minimize DNS pollution attack impact, supports DoH/DoT upstream and fake IP.
+- Rules based off domains, GEOIP, IPCIDR or Process to forward packets to different nodes
+- Remote groups allow users to implement powerful rules. Supports automatic fallback, load balancing or auto select node
+  based off latency
+- Remote providers, allowing users to get node lists remotely instead of hard-coding in config
+- Netfilter TCP redirecting. Deploy Clash on your Internet gateway with `iptables`.
+- Comprehensive HTTP RESTful API controller
 
-## Install
+## Dashboard
 
-Clash Requires Go >= 1.13. You can build it from source:
+A web dashboard with first-class support for this project has been created; it can be checked out at [metacubexd](https://github.com/MetaCubeX/metacubexd).
 
-```sh
-$ go get -u -v github.com/Dreamacro/clash
+## Configration example
+
+Configuration example is located at [/docs/config.yaml](https://github.com/MetaCubeX/Clash.Meta/blob/Alpha/docs/config.yaml).
+
+## Docs
+
+Documentation can be found in [Clash.Meta Docs](https://clash-meta.wiki).
+
+## For development
+
+Requirements:
+[Go 1.20 or newer](https://go.dev/dl/)
+
+Build Clash.Meta:
+
+```shell
+git clone https://github.com/MetaCubeX/Clash.Meta.git
+cd Clash.Meta && go mod download
+go build
 ```
 
-Pre-built binaries are available here: [release](https://github.com/Dreamacro/clash/releases)
+Set go proxy if a connection to GitHub is not possible:
 
-Check Clash version with:
-
-```sh
-$ clash -v
+```shell
+go env -w GOPROXY=https://goproxy.io,direct
 ```
 
-## Daemon
+Build with gvisor tun stack:
 
-Unfortunately, there is no native and elegant way to implement daemons on Golang.
-
-So we can use third-party daemon tools like PM2, Supervisor or the like.
-
-In the case of [pm2](https://github.com/Unitech/pm2), we can start the daemon this way:
-
-```sh
-$ pm2 start clash
+```shell
+go build -tags with_gvisor
 ```
 
-If you have Docker installed, you can run clash directly using `docker-compose`.
+### IPTABLES configuration
 
-[Run clash in docker](https://github.com/Dreamacro/clash/wiki/Run-clash-in-docker)
+Work on Linux OS which supported `iptables`
 
-## Config
+```yaml
+# Enable the TPROXY listener
+tproxy-port: 9898
 
-The default configuration directory is `$HOME/.config/clash`.
-
-The name of the configuration file is `config.yaml`.
-
-If you want to use another directory, use `-d` to control the configuration directory.
-
-For example, you can use the current directory as the configuration directory:
-
-```sh
-$ clash -d .
+iptables:
+  enable: true # default is false
+  inbound-interface: eth0 # detect the inbound interface, default is 'lo'
 ```
 
-<details>
-  <summary>This is an example configuration file (click to expand)</summary>
+## Debugging
 
-```yml
-# port of HTTP
-port: 7890
+Check [wiki](https://wiki.metacubex.one/api/#debug) to get an instruction on using debug
+API.
 
-# port of SOCKS5
-socks-port: 7891
+## Credits
 
-# redir port for Linux and macOS
-# redir-port: 7892
-
-allow-lan: false
-
-# Only applicable when setting allow-lan to true
-# "*": bind all IP addresses
-# 192.168.122.11: bind a single IPv4 address
-# "[aaaa::a8aa:ff:fe09:57d8]": bind a single IPv6 address
-# bind-address: "*"
-
-# Rule / Global/ Direct (default is Rule)
-mode: Rule
-
-# set log level to stdout (default is info)
-# info / warning / error / debug / silent
-log-level: info
-
-# RESTful API for clash
-external-controller: 127.0.0.1:9090
-
-# you can put the static web resource (such as clash-dashboard) to a directory, and clash would serve in `${API}/ui`
-# input is a relative path to the configuration directory or an absolute path
-# external-ui: folder
-
-# Secret for RESTful API (Optional)
-# secret: ""
-
-# experimental feature
-experimental:
-  ignore-resolve-fail: true # ignore dns resolve fail, default value is true
-
-# authentication of local SOCKS5/HTTP(S) server
-# authentication:
-#  - "user1:pass1"
-#  - "user2:pass2"
-
-# # experimental hosts, support wildcard (e.g. *.clash.dev Even *.foo.*.example.com)
-# # static domain has a higher priority than wildcard domain (foo.example.com > *.example.com)
-# hosts:
-#   '*.clash.dev': 127.0.0.1
-#   'alpha.clash.dev': '::1'
-
-# dns:
-  # enable: true # set true to enable dns (default is false)
-  # ipv6: false # default is false
-  # listen: 0.0.0.0:53
-  # enhanced-mode: redir-host # or fake-ip
-  # # fake-ip-range: 198.18.0.1/16 # if you don't know what it is, don't change it
-  # fake-ip-filter: # fake ip white domain list
-  #   - *.lan
-  #   - localhost.ptlogin2.qq.com
-  # nameserver:
-  #   - 114.114.114.114
-  #   - tls://dns.rubyfish.cn:853 # dns over tls
-  #   - https://1.1.1.1/dns-query # dns over https
-  # fallback: # concurrent request with nameserver, fallback used when GEOIP country isn't CN
-  #   - tcp://1.1.1.1
-  # fallback-filter:
-  #   geoip: true # default
-  #   ipcidr: # ips in these subnets will be considered polluted
-  #     - 240.0.0.0/4
-
-Proxy:
-  # shadowsocks
-  # The supported ciphers(encrypt methods):
-  #   aes-128-gcm aes-192-gcm aes-256-gcm
-  #   aes-128-cfb aes-192-cfb aes-256-cfb
-  #   aes-128-ctr aes-192-ctr aes-256-ctr
-  #   rc4-md5 chacha20-ietf xchacha20
-  #   chacha20-ietf-poly1305 xchacha20-ietf-poly1305
-  - name: "ss1"
-    type: ss
-    server: server
-    port: 443
-    cipher: chacha20-ietf-poly1305
-    password: "password"
-    # udp: true
-
-  # old obfs configuration format remove after prerelease
-  - name: "ss2"
-    type: ss
-    server: server
-    port: 443
-    cipher: chacha20-ietf-poly1305
-    password: "password"
-    plugin: obfs
-    plugin-opts:
-      mode: tls # or http
-      # host: bing.com
-
-  - name: "ss3"
-    type: ss
-    server: server
-    port: 443
-    cipher: chacha20-ietf-poly1305
-    password: "password"
-    plugin: v2ray-plugin
-    plugin-opts:
-      mode: websocket # no QUIC now
-      # tls: true # wss
-      # skip-cert-verify: true
-      # host: bing.com
-      # path: "/"
-      # mux: true
-      # headers:
-      #   custom: value
-
-  # vmess
-  # cipher support auto/aes-128-gcm/chacha20-poly1305/none
-  - name: "vmess"
-    type: vmess
-    server: server
-    port: 443
-    uuid: uuid
-    alterId: 32
-    cipher: auto
-    # udp: true
-    # tls: true
-    # skip-cert-verify: true
-    # network: ws
-    # ws-path: /path
-    # ws-headers:
-    #   Host: v2ray.com
-
-  # socks5
-  - name: "socks"
-    type: socks5
-    server: server
-    port: 443
-    # username: username
-    # password: password
-    # tls: true
-    # skip-cert-verify: true
-    # udp: true
-
-  # http
-  - name: "http"
-    type: http
-    server: server
-    port: 443
-    # username: username
-    # password: password
-    # tls: true # https
-    # skip-cert-verify: true
-
-  # snell
-  - name: "snell"
-    type: snell
-    server: server
-    port: 44046
-    psk: yourpsk
-    # obfs-opts:
-      # mode: http # or tls
-      # host: bing.com
-
-Proxy Group:
-  # url-test select which proxy will be used by benchmarking speed to a URL.
-  - name: "auto"
-    type: url-test
-    proxies:
-      - ss1
-      - ss2
-      - vmess1
-    url: 'http://www.gstatic.com/generate_204'
-    interval: 300
-
-  # fallback select an available policy by priority. The availability is tested by accessing an URL, just like an auto url-test group.
-  - name: "fallback-auto"
-    type: fallback
-    proxies:
-      - ss1
-      - ss2
-      - vmess1
-    url: 'http://www.gstatic.com/generate_204'
-    interval: 300
-
-  # load-balance: The request of the same eTLD will be dial on the same proxy.
-  - name: "load-balance"
-    type: load-balance
-    proxies:
-      - ss1
-      - ss2
-      - vmess1
-    url: 'http://www.gstatic.com/generate_204'
-    interval: 300
-
-  # select is used for selecting proxy or proxy group
-  # you can use RESTful API to switch proxy, is recommended for use in GUI.
-  - name: Proxy
-    type: select
-    proxies:
-      - ss1
-      - ss2
-      - vmess1
-      - auto
-
-Rule:
-  - DOMAIN-SUFFIX,google.com,auto
-  - DOMAIN-KEYWORD,google,auto
-  - DOMAIN,google.com,auto
-  - DOMAIN-SUFFIX,ad.com,REJECT
-  # rename SOURCE-IP-CIDR and would remove after prerelease
-  - SRC-IP-CIDR,192.168.1.201/32,DIRECT
-  # optional param "no-resolve" for IP rules (GEOIP IP-CIDR)
-  - IP-CIDR,127.0.0.0/8,DIRECT
-  - GEOIP,CN,DIRECT
-  - DST-PORT,80,DIRECT
-  - SRC-PORT,7777,DIRECT
-  # FINAL would remove after prerelease
-  # you also can use `FINAL,Proxy` or `FINAL,,Proxy` now
-  - MATCH,auto
-```
-</details>
-
-## Advanced
-[Provider](https://github.com/Dreamacro/clash/wiki/Provider)
-
-## Documentations
-https://clash.gitbook.io/
-
-## Thanks
-
-[riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
-
-[v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
+- [Dreamacro/clash](https://github.com/Dreamacro/clash)
+- [SagerNet/sing-box](https://github.com/SagerNet/sing-box)
+- [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
+- [v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
+- [WireGuard/wireguard-go](https://github.com/WireGuard/wireguard-go)
+- [yaling888/clash-plus-pro](https://github.com/yaling888/clash)
 
 ## License
 
+This software is released under the GPL-3.0 license.
+
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FDreamacro%2Fclash.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2FDreamacro%2Fclash?ref=badge_large)
-
-## TODO
-
-- [x] Complementing the necessary rule operators
-- [x] Redir proxy
-- [x] UDP support
-- [x] Connection manager
-- [ ] Event API

adapter/adapter.go

@@ -0,0 +1,372 @@
+package adapter
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"net/netip"
+	"net/url"
+	"strconv"
+	"time"
+
+	"github.com/Dreamacro/clash/common/atomic"
+	"github.com/Dreamacro/clash/common/queue"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+
+	"github.com/puzpuzpuz/xsync/v2"
+)
+
+var UnifiedDelay = atomic.NewBool(false)
+
+const (
+	defaultHistoriesNum = 10
+)
+
+type extraProxyState struct {
+	history *queue.Queue[C.DelayHistory]
+	alive   atomic.Bool
+}
+
+type Proxy struct {
+	C.ProxyAdapter
+	history *queue.Queue[C.DelayHistory]
+	alive   atomic.Bool
+	url     string
+	extra   *xsync.MapOf[string, *extraProxyState]
+}
+
+// Alive implements C.Proxy
+func (p *Proxy) Alive() bool {
+	return p.alive.Load()
+}
+
+// AliveForTestUrl implements C.Proxy
+func (p *Proxy) AliveForTestUrl(url string) bool {
+	if state, ok := p.extra.Load(url); ok {
+		return state.alive.Load()
+	}
+
+	return p.alive.Load()
+}
+
+// Dial implements C.Proxy
+func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
+	defer cancel()
+	return p.DialContext(ctx, metadata)
+}
+
+// DialContext implements C.ProxyAdapter
+func (p *Proxy) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	conn, err := p.ProxyAdapter.DialContext(ctx, metadata, opts...)
+	return conn, err
+}
+
+// DialUDP implements C.ProxyAdapter
+func (p *Proxy) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultUDPTimeout)
+	defer cancel()
+	return p.ListenPacketContext(ctx, metadata)
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (p *Proxy) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	pc, err := p.ProxyAdapter.ListenPacketContext(ctx, metadata, opts...)
+	return pc, err
+}
+
+// DelayHistory implements C.Proxy
+func (p *Proxy) DelayHistory() []C.DelayHistory {
+	queueM := p.history.Copy()
+	histories := []C.DelayHistory{}
+	for _, item := range queueM {
+		histories = append(histories, item)
+	}
+
+	return histories
+}
+
+// DelayHistoryForTestUrl implements C.Proxy
+func (p *Proxy) DelayHistoryForTestUrl(url string) []C.DelayHistory {
+	var queueM []C.DelayHistory
+
+	if state, ok := p.extra.Load(url); ok {
+		queueM = state.history.Copy()
+	}
+
+	if queueM == nil {
+		queueM = p.history.Copy()
+	}
+
+	histories := []C.DelayHistory{}
+	for _, item := range queueM {
+		histories = append(histories, item)
+	}
+	return histories
+}
+
+func (p *Proxy) ExtraDelayHistory() map[string][]C.DelayHistory {
+	extraHistory := map[string][]C.DelayHistory{}
+
+	p.extra.Range(func(k string, v *extraProxyState) bool {
+
+		testUrl := k
+		state := v
+
+		histories := []C.DelayHistory{}
+		queueM := state.history.Copy()
+
+		for _, item := range queueM {
+			histories = append(histories, item)
+		}
+
+		extraHistory[testUrl] = histories
+
+		return true
+	})
+	return extraHistory
+}
+
+// LastDelay return last history record. if proxy is not alive, return the max value of uint16.
+// implements C.Proxy
+func (p *Proxy) LastDelay() (delay uint16) {
+	var max uint16 = 0xffff
+	if !p.alive.Load() {
+		return max
+	}
+
+	history := p.history.Last()
+	if history.Delay == 0 {
+		return max
+	}
+	return history.Delay
+}
+
+// LastDelayForTestUrl implements C.Proxy
+func (p *Proxy) LastDelayForTestUrl(url string) (delay uint16) {
+	var max uint16 = 0xffff
+
+	alive := p.alive.Load()
+	history := p.history.Last()
+
+	if state, ok := p.extra.Load(url); ok {
+		alive = state.alive.Load()
+		history = state.history.Last()
+	}
+
+	if !alive {
+		return max
+	}
+
+	if history.Delay == 0 {
+		return max
+	}
+	return history.Delay
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (p *Proxy) MarshalJSON() ([]byte, error) {
+	inner, err := p.ProxyAdapter.MarshalJSON()
+	if err != nil {
+		return inner, err
+	}
+
+	mapping := map[string]any{}
+	_ = json.Unmarshal(inner, &mapping)
+	mapping["history"] = p.DelayHistory()
+	mapping["extra"] = p.ExtraDelayHistory()
+	mapping["alive"] = p.Alive()
+	mapping["name"] = p.Name()
+	mapping["udp"] = p.SupportUDP()
+	mapping["xudp"] = p.SupportXUDP()
+	mapping["tfo"] = p.SupportTFO()
+	return json.Marshal(mapping)
+}
+
+// URLTest get the delay for the specified URL
+// implements C.Proxy
+func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.IntRanges[uint16], store C.DelayHistoryStoreType) (t uint16, err error) {
+	defer func() {
+		alive := err == nil
+		store = p.determineFinalStoreType(store, url)
+
+		switch store {
+		case C.OriginalHistory:
+			p.alive.Store(alive)
+			record := C.DelayHistory{Time: time.Now()}
+			if alive {
+				record.Delay = t
+			}
+			p.history.Put(record)
+			if p.history.Len() > defaultHistoriesNum {
+				p.history.Pop()
+			}
+
+			// test URL configured by the proxy provider
+			if len(p.url) == 0 {
+				p.url = url
+			}
+		case C.ExtraHistory:
+			record := C.DelayHistory{Time: time.Now()}
+			if alive {
+				record.Delay = t
+			}
+			p.history.Put(record)
+			if p.history.Len() > defaultHistoriesNum {
+				p.history.Pop()
+			}
+
+			state, ok := p.extra.Load(url)
+			if !ok {
+				state = &extraProxyState{
+					history: queue.New[C.DelayHistory](defaultHistoriesNum),
+					alive:   atomic.NewBool(true),
+				}
+				p.extra.Store(url, state)
+			}
+
+			state.alive.Store(alive)
+			state.history.Put(record)
+			if state.history.Len() > defaultHistoriesNum {
+				state.history.Pop()
+			}
+		default:
+			log.Debugln("health check result will be discarded, url: %s alive: %t, delay: %d", url, alive, t)
+		}
+	}()
+
+	unifiedDelay := UnifiedDelay.Load()
+
+	addr, err := urlToMetadata(url)
+	if err != nil {
+		return
+	}
+
+	start := time.Now()
+	instance, err := p.DialContext(ctx, &addr)
+	if err != nil {
+		return
+	}
+	defer func() {
+		_ = instance.Close()
+	}()
+
+	req, err := http.NewRequest(http.MethodHead, url, nil)
+	if err != nil {
+		return
+	}
+	req = req.WithContext(ctx)
+
+	transport := &http.Transport{
+		DialContext: func(context.Context, string, string) (net.Conn, error) {
+			return instance, nil
+		},
+		// from http.DefaultTransport
+		MaxIdleConns:          100,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+
+	client := http.Client{
+		Timeout:   30 * time.Second,
+		Transport: transport,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+
+	defer client.CloseIdleConnections()
+
+	resp, err := client.Do(req)
+
+	if err != nil {
+		return
+	}
+
+	_ = resp.Body.Close()
+
+	if unifiedDelay {
+		second := time.Now()
+		resp, err = client.Do(req)
+		if err == nil {
+			_ = resp.Body.Close()
+			start = second
+		}
+	}
+
+	if expectedStatus != nil && !expectedStatus.Check(uint16(resp.StatusCode)) {
+		// maybe another value should be returned for differentiation
+		err = errors.New("response status is inconsistent with the expected status")
+	}
+
+	t = uint16(time.Since(start) / time.Millisecond)
+	return
+}
+
+func NewProxy(adapter C.ProxyAdapter) *Proxy {
+	return &Proxy{
+		ProxyAdapter: adapter,
+		history:      queue.New[C.DelayHistory](defaultHistoriesNum),
+		alive:        atomic.NewBool(true),
+		url:          "",
+		extra:        xsync.NewMapOf[*extraProxyState]()}
+}
+
+func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return
+	}
+
+	port := u.Port()
+	if port == "" {
+		switch u.Scheme {
+		case "https":
+			port = "443"
+		case "http":
+			port = "80"
+		default:
+			err = fmt.Errorf("%s scheme not Support", rawURL)
+			return
+		}
+	}
+	uintPort, err := strconv.ParseUint(port, 10, 16)
+	if err != nil {
+		return
+	}
+
+	addr = C.Metadata{
+		Host:    u.Hostname(),
+		DstIP:   netip.Addr{},
+		DstPort: uint16(uintPort),
+	}
+	return
+}
+
+func (p *Proxy) determineFinalStoreType(store C.DelayHistoryStoreType, url string) C.DelayHistoryStoreType {
+	if store != C.DropHistory {
+		return store
+	}
+
+	if len(p.url) == 0 || url == p.url {
+		return C.OriginalHistory
+	}
+
+	if p.extra.Size() < 2*C.DefaultMaxHealthCheckUrlNum {
+		return C.ExtraHistory
+	}
+
+	_, ok := p.extra.Load(url)
+	if ok {
+		return C.ExtraHistory
+	}
+
+	return store
+}

adapter/inbound/addition.go

@@ -0,0 +1,65 @@
+package inbound
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Addition func(metadata *C.Metadata)
+
+func ApplyAdditions(metadata *C.Metadata, additions ...Addition) {
+	for _, addition := range additions {
+		addition(metadata)
+	}
+}
+
+func WithInName(name string) Addition {
+	return func(metadata *C.Metadata) {
+		metadata.InName = name
+	}
+}
+
+func WithInUser(user string) Addition {
+	return func(metadata *C.Metadata) {
+		metadata.InUser = user
+	}
+}
+
+func WithSpecialRules(specialRules string) Addition {
+	return func(metadata *C.Metadata) {
+		metadata.SpecialRules = specialRules
+	}
+}
+
+func WithSpecialProxy(specialProxy string) Addition {
+	return func(metadata *C.Metadata) {
+		metadata.SpecialProxy = specialProxy
+	}
+}
+
+func WithDstAddr(addr net.Addr) Addition {
+	return func(metadata *C.Metadata) {
+		_ = metadata.SetRemoteAddr(addr)
+	}
+}
+
+func WithSrcAddr(addr net.Addr) Addition {
+	return func(metadata *C.Metadata) {
+		m := C.Metadata{}
+		if err := m.SetRemoteAddr(addr);err ==nil{
+			metadata.SrcIP = m.DstIP
+			metadata.SrcPort = m.DstPort
+		}
+	}
+}
+
+func WithInAddr(addr net.Addr) Addition {
+	return func(metadata *C.Metadata) {
+		m := C.Metadata{}
+		if err := m.SetRemoteAddr(addr);err ==nil{
+			metadata.InIP = m.DstIP
+			metadata.InPort = m.DstPort
+		}
+	}
+}

adapter/inbound/auth.go

@@ -0,0 +1,45 @@
+package inbound
+
+import (
+	"net"
+	"net/netip"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+var skipAuthPrefixes []netip.Prefix
+
+func SetSkipAuthPrefixes(prefixes []netip.Prefix) {
+	skipAuthPrefixes = prefixes
+}
+
+func SkipAuthPrefixes() []netip.Prefix {
+	return skipAuthPrefixes
+}
+
+func SkipAuthRemoteAddr(addr net.Addr) bool {
+	m := C.Metadata{}
+	if err := m.SetRemoteAddr(addr); err != nil {
+		return false
+	}
+	return skipAuth(m.AddrPort().Addr())
+}
+
+func SkipAuthRemoteAddress(addr string) bool {
+	m := C.Metadata{}
+	if err := m.SetRemoteAddress(addr); err != nil {
+		return false
+	}
+	return skipAuth(m.AddrPort().Addr())
+}
+
+func skipAuth(addr netip.Addr) bool {
+	if addr.IsValid() {
+		for _, prefix := range skipAuthPrefixes {
+			if prefix.Contains(addr.Unmap()) {
+				return true
+			}
+		}
+	}
+	return false
+}

adapter/inbound/http.go

@@ -0,0 +1,20 @@
+package inbound
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+// NewHTTP receive normal http request and return HTTPContext
+func NewHTTP(target socks5.Addr, srcConn net.Conn, conn net.Conn, additions ...Addition) (net.Conn, *C.Metadata) {
+	metadata := parseSocksAddr(target)
+	metadata.NetWork = C.TCP
+	metadata.Type = C.HTTP
+	metadata.RawSrcAddr = srcConn.RemoteAddr()
+	metadata.RawDstAddr = srcConn.LocalAddr()
+	ApplyAdditions(metadata, WithSrcAddr(srcConn.RemoteAddr()), WithInAddr(conn.LocalAddr()))
+	ApplyAdditions(metadata, additions...)
+	return conn, metadata
+}

adapter/inbound/https.go

@@ -0,0 +1,17 @@
+package inbound
+
+import (
+	"net"
+	"net/http"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+// NewHTTPS receive CONNECT request and return ConnContext
+func NewHTTPS(request *http.Request, conn net.Conn, additions ...Addition) (net.Conn, *C.Metadata) {
+	metadata := parseHTTPAddr(request)
+	metadata.Type = C.HTTPS
+	ApplyAdditions(metadata, WithSrcAddr(conn.RemoteAddr()), WithInAddr(conn.LocalAddr()))
+	ApplyAdditions(metadata, additions...)
+	return conn, metadata
+}

adapter/inbound/listen.go

@@ -0,0 +1,30 @@
+package inbound
+
+import (
+	"context"
+	"net"
+
+	"github.com/sagernet/tfo-go"
+)
+
+var (
+	lc = tfo.ListenConfig{
+		DisableTFO: true,
+	}
+)
+
+func SetTfo(open bool) {
+	lc.DisableTFO = !open
+}
+
+func SetMPTCP(open bool) {
+	setMultiPathTCP(&lc.ListenConfig, open)
+}
+
+func ListenContext(ctx context.Context, network, address string) (net.Listener, error) {
+	return lc.Listen(ctx, network, address)
+}
+
+func Listen(network, address string) (net.Listener, error) {
+	return ListenContext(context.Background(), network, address)
+}

adapter/inbound/mptcp_go120.go

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

adapter/inbound/mptcp_go121.go

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

adapter/inbound/packet.go

@@ -0,0 +1,22 @@
+package inbound
+
+import (
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+// NewPacket is PacketAdapter generator
+func NewPacket(target socks5.Addr, packet C.UDPPacket, source C.Type, additions ...Addition) (C.UDPPacket, *C.Metadata) {
+	metadata := parseSocksAddr(target)
+	metadata.NetWork = C.UDP
+	metadata.Type = source
+	metadata.RawSrcAddr = packet.LocalAddr()
+	metadata.RawDstAddr = metadata.UDPAddr()
+	ApplyAdditions(metadata, WithSrcAddr(packet.LocalAddr()))
+	if p, ok := packet.(C.UDPPacketInAddr); ok {
+		ApplyAdditions(metadata, WithInAddr(p.InAddr()))
+	}
+	ApplyAdditions(metadata, additions...)
+
+	return packet, metadata
+}

adapter/inbound/socket.go

@@ -0,0 +1,18 @@
+package inbound
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+// NewSocket receive TCP inbound and return ConnContext
+func NewSocket(target socks5.Addr, conn net.Conn, source C.Type, additions ...Addition) (net.Conn, *C.Metadata) {
+	metadata := parseSocksAddr(target)
+	metadata.NetWork = C.TCP
+	metadata.Type = source
+	ApplyAdditions(metadata, WithSrcAddr(conn.RemoteAddr()), WithInAddr(conn.LocalAddr()))
+	ApplyAdditions(metadata, additions...)
+	return conn, metadata
+}

adapter/inbound/util.go

@@ -0,0 +1,63 @@
+package inbound
+
+import (
+	"net"
+	"net/http"
+	"net/netip"
+	"strconv"
+	"strings"
+
+	"github.com/Dreamacro/clash/common/nnip"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+func parseSocksAddr(target socks5.Addr) *C.Metadata {
+	metadata := &C.Metadata{}
+
+	switch target[0] {
+	case socks5.AtypDomainName:
+		// trim for FQDN
+		metadata.Host = strings.TrimRight(string(target[2:2+target[1]]), ".")
+		metadata.DstPort = uint16((int(target[2+target[1]]) << 8) | int(target[2+target[1]+1]))
+	case socks5.AtypIPv4:
+		metadata.DstIP = nnip.IpToAddr(net.IP(target[1 : 1+net.IPv4len]))
+		metadata.DstPort = uint16((int(target[1+net.IPv4len]) << 8) | int(target[1+net.IPv4len+1]))
+	case socks5.AtypIPv6:
+		ip6, _ := netip.AddrFromSlice(target[1 : 1+net.IPv6len])
+		metadata.DstIP = ip6.Unmap()
+		metadata.DstPort = uint16((int(target[1+net.IPv6len]) << 8) | int(target[1+net.IPv6len+1]))
+	}
+
+	return metadata
+}
+
+func parseHTTPAddr(request *http.Request) *C.Metadata {
+	host := request.URL.Hostname()
+	port := request.URL.Port()
+	if port == "" {
+		port = "80"
+	}
+
+	// trim FQDN (#737)
+	host = strings.TrimRight(host, ".")
+
+	var uint16Port uint16
+	if port, err := strconv.ParseUint(port, 10, 16); err == nil {
+		uint16Port = uint16(port)
+	}
+
+	metadata := &C.Metadata{
+		NetWork: C.TCP,
+		Host:    host,
+		DstIP:   netip.Addr{},
+		DstPort: uint16Port,
+	}
+
+	ip, err := netip.ParseAddr(host)
+	if err == nil {
+		metadata.DstIP = ip
+	}
+
+	return metadata
+}

adapter/outbound/base.go

@@ -0,0 +1,287 @@
+package outbound
+
+import (
+	"context"
+	"encoding/json"
+	"net"
+	"strings"
+	"syscall"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Base struct {
+	name   string
+	addr   string
+	iface  string
+	tp     C.AdapterType
+	udp    bool
+	xudp   bool
+	tfo    bool
+	mpTcp  bool
+	rmark  int
+	id     string
+	prefer C.DNSPrefer
+}
+
+// Name implements C.ProxyAdapter
+func (b *Base) Name() string {
+	return b.name
+}
+
+// Id implements C.ProxyAdapter
+func (b *Base) Id() string {
+	if b.id == "" {
+		b.id = utils.NewUUIDV6().String()
+	}
+
+	return b.id
+}
+
+// Type implements C.ProxyAdapter
+func (b *Base) Type() C.AdapterType {
+	return b.tp
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (b *Base) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	return c, C.ErrNotSupport
+}
+
+func (b *Base) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	return nil, C.ErrNotSupport
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (b *Base) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	return nil, C.ErrNotSupport
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return nil, C.ErrNotSupport
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (b *Base) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	return nil, C.ErrNotSupport
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (b *Base) SupportWithDialer() C.NetWork {
+	return C.InvalidNet
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (b *Base) SupportUOT() bool {
+	return false
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (b *Base) SupportUDP() bool {
+	return b.udp
+}
+
+// SupportXUDP implements C.ProxyAdapter
+func (b *Base) SupportXUDP() bool {
+	return b.xudp
+}
+
+// SupportTFO implements C.ProxyAdapter
+func (b *Base) SupportTFO() bool {
+	return b.tfo
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (b *Base) IsL3Protocol(metadata *C.Metadata) bool {
+	return false
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (b *Base) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]string{
+		"type": b.Type().String(),
+		"id":   b.Id(),
+	})
+}
+
+// Addr implements C.ProxyAdapter
+func (b *Base) Addr() string {
+	return b.addr
+}
+
+// Unwrap implements C.ProxyAdapter
+func (b *Base) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	return nil
+}
+
+// DialOptions return []dialer.Option from struct
+func (b *Base) DialOptions(opts ...dialer.Option) []dialer.Option {
+	if b.iface != "" {
+		opts = append(opts, dialer.WithInterface(b.iface))
+	}
+
+	if b.rmark != 0 {
+		opts = append(opts, dialer.WithRoutingMark(b.rmark))
+	}
+
+	switch b.prefer {
+	case C.IPv4Only:
+		opts = append(opts, dialer.WithOnlySingleStack(true))
+	case C.IPv6Only:
+		opts = append(opts, dialer.WithOnlySingleStack(false))
+	case C.IPv4Prefer:
+		opts = append(opts, dialer.WithPreferIPv4())
+	case C.IPv6Prefer:
+		opts = append(opts, dialer.WithPreferIPv6())
+	default:
+	}
+
+	if b.tfo {
+		opts = append(opts, dialer.WithTFO(true))
+	}
+
+	if b.mpTcp {
+		opts = append(opts, dialer.WithMPTCP(true))
+	}
+
+	return opts
+}
+
+type BasicOption struct {
+	TFO         bool   `proxy:"tfo,omitempty" group:"tfo,omitempty"`
+	MPTCP       bool   `proxy:"mptcp,omitempty" group:"mptcp,omitempty"`
+	Interface   string `proxy:"interface-name,omitempty" group:"interface-name,omitempty"`
+	RoutingMark int    `proxy:"routing-mark,omitempty" group:"routing-mark,omitempty"`
+	IPVersion   string `proxy:"ip-version,omitempty" group:"ip-version,omitempty"`
+	DialerProxy string `proxy:"dialer-proxy,omitempty"` // don't apply this option into groups, but can set a group name in a proxy
+}
+
+type BaseOption struct {
+	Name        string
+	Addr        string
+	Type        C.AdapterType
+	UDP         bool
+	XUDP        bool
+	TFO         bool
+	MPTCP       bool
+	Interface   string
+	RoutingMark int
+	Prefer      C.DNSPrefer
+}
+
+func NewBase(opt BaseOption) *Base {
+	return &Base{
+		name:   opt.Name,
+		addr:   opt.Addr,
+		tp:     opt.Type,
+		udp:    opt.UDP,
+		xudp:   opt.XUDP,
+		tfo:    opt.TFO,
+		mpTcp:  opt.MPTCP,
+		iface:  opt.Interface,
+		rmark:  opt.RoutingMark,
+		prefer: opt.Prefer,
+	}
+}
+
+type conn struct {
+	N.ExtendedConn
+	chain                   C.Chain
+	actualRemoteDestination string
+}
+
+func (c *conn) RemoteDestination() string {
+	return c.actualRemoteDestination
+}
+
+// Chains implements C.Connection
+func (c *conn) Chains() C.Chain {
+	return c.chain
+}
+
+// AppendToChains implements C.Connection
+func (c *conn) AppendToChains(a C.ProxyAdapter) {
+	c.chain = append(c.chain, a.Name())
+}
+
+func (c *conn) Upstream() any {
+	return c.ExtendedConn
+}
+
+func (c *conn) WriterReplaceable() bool {
+	return true
+}
+
+func (c *conn) ReaderReplaceable() bool {
+	return true
+}
+
+func NewConn(c net.Conn, a C.ProxyAdapter) C.Conn {
+	if _, ok := c.(syscall.Conn); !ok { // exclusion system conn like *net.TCPConn
+		c = N.NewDeadlineConn(c) // most conn from outbound can't handle readDeadline correctly
+	}
+	return &conn{N.NewExtendedConn(c), []string{a.Name()}, parseRemoteDestination(a.Addr())}
+}
+
+type packetConn struct {
+	N.EnhancePacketConn
+	chain                   C.Chain
+	adapterName             string
+	connID                  string
+	actualRemoteDestination string
+}
+
+func (c *packetConn) RemoteDestination() string {
+	return c.actualRemoteDestination
+}
+
+// Chains implements C.Connection
+func (c *packetConn) Chains() C.Chain {
+	return c.chain
+}
+
+// AppendToChains implements C.Connection
+func (c *packetConn) AppendToChains(a C.ProxyAdapter) {
+	c.chain = append(c.chain, a.Name())
+}
+
+func (c *packetConn) LocalAddr() net.Addr {
+	lAddr := c.EnhancePacketConn.LocalAddr()
+	return N.NewCustomAddr(c.adapterName, c.connID, lAddr) // make quic-go's connMultiplexer happy
+}
+
+func (c *packetConn) Upstream() any {
+	return c.EnhancePacketConn
+}
+
+func (c *packetConn) WriterReplaceable() bool {
+	return true
+}
+
+func (c *packetConn) ReaderReplaceable() bool {
+	return true
+}
+
+func newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
+	epc := N.NewEnhancePacketConn(pc)
+	if _, ok := pc.(syscall.Conn); !ok { // exclusion system conn like *net.UDPConn
+		epc = N.NewDeadlineEnhancePacketConn(epc) // most conn from outbound can't handle readDeadline correctly
+	}
+	return &packetConn{epc, []string{a.Name()}, a.Name(), utils.NewUUIDV4().String(), parseRemoteDestination(a.Addr())}
+}
+
+func parseRemoteDestination(addr string) string {
+	if dst, _, err := net.SplitHostPort(addr); err == nil {
+		return dst
+	} else {
+		if addrError, ok := err.(*net.AddrError); ok && strings.Contains(addrError.Err, "missing port") {
+			return dst
+		} else {
+			return ""
+		}
+	}
+}

adapter/outbound/direct.go

@@ -0,0 +1,86 @@
+package outbound
+
+import (
+	"context"
+	"errors"
+	"net/netip"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Direct struct {
+	*Base
+}
+
+type DirectOption struct {
+	BasicOption
+	Name string `proxy:"name"`
+}
+
+// DialContext implements C.ProxyAdapter
+func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	opts = append(opts, dialer.WithResolver(resolver.DefaultResolver))
+	c, err := dialer.DialContext(ctx, "tcp", metadata.RemoteAddress(), d.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	N.TCPKeepAlive(c)
+	return NewConn(c, d), nil
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (d *Direct) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	// net.UDPConn.WriteTo only working with *net.UDPAddr, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIPWithResolver(ctx, metadata.Host, resolver.DefaultResolver)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+	pc, err := dialer.NewDialer(d.Base.DialOptions(opts...)...).ListenPacket(ctx, "udp", "", netip.AddrPortFrom(metadata.DstIP, metadata.DstPort))
+	if err != nil {
+		return nil, err
+	}
+	return newPacketConn(pc, d), nil
+}
+
+func NewDirectWithOption(option DirectOption) *Direct {
+	return &Direct{
+		Base: &Base{
+			name:   option.Name,
+			tp:     C.Direct,
+			udp:    true,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+	}
+}
+
+func NewDirect() *Direct {
+	return &Direct{
+		Base: &Base{
+			name:   "DIRECT",
+			tp:     C.Direct,
+			udp:    true,
+			prefer: C.DualStack,
+		},
+	}
+}
+
+func NewCompatible() *Direct {
+	return &Direct{
+		Base: &Base{
+			name:   "COMPATIBLE",
+			tp:     C.Compatible,
+			udp:    true,
+			prefer: C.DualStack,
+		},
+	}
+}

adapter/outbound/http.go

@@ -0,0 +1,186 @@
+package outbound
+
+import (
+	"bufio"
+	"context"
+	"crypto/tls"
+	"encoding/base64"
+	"errors"
+	"fmt"
+
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Http struct {
+	*Base
+	user      string
+	pass      string
+	tlsConfig *tls.Config
+	option    *HttpOption
+}
+
+type HttpOption struct {
+	BasicOption
+	Name           string            `proxy:"name"`
+	Server         string            `proxy:"server"`
+	Port           int               `proxy:"port"`
+	UserName       string            `proxy:"username,omitempty"`
+	Password       string            `proxy:"password,omitempty"`
+	TLS            bool              `proxy:"tls,omitempty"`
+	SNI            string            `proxy:"sni,omitempty"`
+	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint    string            `proxy:"fingerprint,omitempty"`
+	Headers        map[string]string `proxy:"headers,omitempty"`
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (h *Http) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	if h.tlsConfig != nil {
+		cc := tls.Client(c, h.tlsConfig)
+		err := cc.HandshakeContext(ctx)
+		c = cc
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", h.addr, err)
+		}
+	}
+
+	if err := h.shakeHand(metadata, c); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+// DialContext implements C.ProxyAdapter
+func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	return h.DialContextWithDialer(ctx, dialer.NewDialer(h.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (h *Http) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(h.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(h.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", h.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", h.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = h.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(c, h), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (h *Http) SupportWithDialer() C.NetWork {
+	return C.TCP
+}
+
+func (h *Http) shakeHand(metadata *C.Metadata, rw io.ReadWriter) error {
+	addr := metadata.RemoteAddress()
+	HeaderString := "CONNECT " + addr + " HTTP/1.1\r\n"
+	tempHeaders := map[string]string{
+		"Host":             addr,
+		"User-Agent":       "Go-http-client/1.1",
+		"Proxy-Connection": "Keep-Alive",
+	}
+
+	for key, value := range h.option.Headers {
+		tempHeaders[key] = value
+	}
+
+	if h.user != "" && h.pass != "" {
+		auth := h.user + ":" + h.pass
+		tempHeaders["Proxy-Authorization"] = "Basic " + base64.StdEncoding.EncodeToString([]byte(auth))
+	}
+
+	for key, value := range tempHeaders {
+		HeaderString += key + ": " + value + "\r\n"
+	}
+
+	HeaderString += "\r\n"
+
+	_, err := rw.Write([]byte(HeaderString))
+
+	if err != nil {
+		return err
+	}
+
+	resp, err := http.ReadResponse(bufio.NewReader(rw), nil)
+
+	if err != nil {
+		return err
+	}
+
+	if resp.StatusCode == http.StatusOK {
+		return nil
+	}
+
+	if resp.StatusCode == http.StatusProxyAuthRequired {
+		return errors.New("HTTP need auth")
+	}
+
+	if resp.StatusCode == http.StatusMethodNotAllowed {
+		return errors.New("CONNECT method not allowed by proxy")
+	}
+
+	if resp.StatusCode >= http.StatusInternalServerError {
+		return errors.New(resp.Status)
+	}
+
+	return fmt.Errorf("can not connect remote err code: %d", resp.StatusCode)
+}
+
+func NewHttp(option HttpOption) (*Http, error) {
+	var tlsConfig *tls.Config
+	if option.TLS {
+		sni := option.Server
+		if option.SNI != "" {
+			sni = option.SNI
+		}
+		var err error
+		tlsConfig, err = ca.GetSpecifiedFingerprintTLSConfig(&tls.Config{
+			InsecureSkipVerify: option.SkipCertVerify,
+			ServerName:         sni,
+		}, option.Fingerprint)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &Http{
+		Base: &Base{
+			name:   option.Name,
+			addr:   net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:     C.Http,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		user:      option.UserName,
+		pass:      option.Password,
+		tlsConfig: tlsConfig,
+		option:    &option,
+	}, nil
+}

adapter/outbound/hysteria.go

@@ -0,0 +1,290 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/base64"
+	"fmt"
+	"net"
+	"net/netip"
+	"strconv"
+	"time"
+
+	"github.com/metacubex/quic-go"
+	"github.com/metacubex/quic-go/congestion"
+	M "github.com/sagernet/sing/common/metadata"
+
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+	hyCongestion "github.com/Dreamacro/clash/transport/hysteria/congestion"
+	"github.com/Dreamacro/clash/transport/hysteria/core"
+	"github.com/Dreamacro/clash/transport/hysteria/obfs"
+	"github.com/Dreamacro/clash/transport/hysteria/pmtud_fix"
+	"github.com/Dreamacro/clash/transport/hysteria/transport"
+	"github.com/Dreamacro/clash/transport/hysteria/utils"
+)
+
+const (
+	mbpsToBps = 125000
+
+	DefaultStreamReceiveWindow     = 15728640 // 15 MB/s
+	DefaultConnectionReceiveWindow = 67108864 // 64 MB/s
+
+	DefaultALPN        = "hysteria"
+	DefaultProtocol    = "udp"
+	DefaultHopInterval = 10
+)
+
+type Hysteria struct {
+	*Base
+
+	option *HysteriaOption
+	client *core.Client
+}
+
+func (h *Hysteria) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	tcpConn, err := h.client.DialTCP(metadata.String(), metadata.DstPort, h.genHdc(ctx, opts...))
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(tcpConn, h), nil
+}
+
+func (h *Hysteria) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	udpConn, err := h.client.DialUDP(h.genHdc(ctx, opts...))
+	if err != nil {
+		return nil, err
+	}
+	return newPacketConn(&hyPacketConn{udpConn}, h), nil
+}
+
+func (h *Hysteria) genHdc(ctx context.Context, opts ...dialer.Option) utils.PacketDialer {
+	return &hyDialerWithContext{
+		ctx: context.Background(),
+		hyDialer: func(network string) (net.PacketConn, error) {
+			var err error
+			var cDialer C.Dialer = dialer.NewDialer(h.Base.DialOptions(opts...)...)
+			if len(h.option.DialerProxy) > 0 {
+				cDialer, err = proxydialer.NewByName(h.option.DialerProxy, cDialer)
+				if err != nil {
+					return nil, err
+				}
+			}
+			rAddrPort, _ := netip.ParseAddrPort(h.Addr())
+			return cDialer.ListenPacket(ctx, network, "", rAddrPort)
+		},
+		remoteAddr: func(addr string) (net.Addr, error) {
+			return resolveUDPAddrWithPrefer(ctx, "udp", addr, h.prefer)
+		},
+	}
+}
+
+type HysteriaOption struct {
+	BasicOption
+	Name                string   `proxy:"name"`
+	Server              string   `proxy:"server"`
+	Port                int      `proxy:"port,omitempty"`
+	Ports               string   `proxy:"ports,omitempty"`
+	Protocol            string   `proxy:"protocol,omitempty"`
+	ObfsProtocol        string   `proxy:"obfs-protocol,omitempty"` // compatible with Stash
+	Up                  string   `proxy:"up"`
+	UpSpeed             int      `proxy:"up-speed,omitempty"` // compatible with Stash
+	Down                string   `proxy:"down"`
+	DownSpeed           int      `proxy:"down-speed,omitempty"` // compatible with Stash
+	Auth                string   `proxy:"auth,omitempty"`
+	AuthString          string   `proxy:"auth-str,omitempty"`
+	Obfs                string   `proxy:"obfs,omitempty"`
+	SNI                 string   `proxy:"sni,omitempty"`
+	SkipCertVerify      bool     `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint         string   `proxy:"fingerprint,omitempty"`
+	ALPN                []string `proxy:"alpn,omitempty"`
+	CustomCA            string   `proxy:"ca,omitempty"`
+	CustomCAString      string   `proxy:"ca-str,omitempty"`
+	ReceiveWindowConn   int      `proxy:"recv-window-conn,omitempty"`
+	ReceiveWindow       int      `proxy:"recv-window,omitempty"`
+	DisableMTUDiscovery bool     `proxy:"disable-mtu-discovery,omitempty"`
+	FastOpen            bool     `proxy:"fast-open,omitempty"`
+	HopInterval         int      `proxy:"hop-interval,omitempty"`
+}
+
+func (c *HysteriaOption) Speed() (uint64, uint64, error) {
+	var up, down uint64
+	up = StringToBps(c.Up)
+	if up == 0 {
+		return 0, 0, fmt.Errorf("invaild upload speed: %s", c.Up)
+	}
+
+	down = StringToBps(c.Down)
+	if down == 0 {
+		return 0, 0, fmt.Errorf("invaild download speed: %s", c.Down)
+	}
+
+	return up, down, nil
+}
+
+func NewHysteria(option HysteriaOption) (*Hysteria, error) {
+	clientTransport := &transport.ClientTransport{
+		Dialer: &net.Dialer{
+			Timeout: 8 * time.Second,
+		},
+	}
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	ports := option.Ports
+
+	serverName := option.Server
+	if option.SNI != "" {
+		serverName = option.SNI
+	}
+
+	tlsConfig := &tls.Config{
+		ServerName:         serverName,
+		InsecureSkipVerify: option.SkipCertVerify,
+		MinVersion:         tls.VersionTLS13,
+	}
+
+	var err error
+	tlsConfig, err = ca.GetTLSConfig(tlsConfig, option.Fingerprint, option.CustomCA, option.CustomCAString)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(option.ALPN) > 0 {
+		tlsConfig.NextProtos = option.ALPN
+	} else {
+		tlsConfig.NextProtos = []string{DefaultALPN}
+	}
+	quicConfig := &quic.Config{
+		InitialStreamReceiveWindow:     uint64(option.ReceiveWindowConn),
+		MaxStreamReceiveWindow:         uint64(option.ReceiveWindowConn),
+		InitialConnectionReceiveWindow: uint64(option.ReceiveWindow),
+		MaxConnectionReceiveWindow:     uint64(option.ReceiveWindow),
+		KeepAlivePeriod:                10 * time.Second,
+		DisablePathMTUDiscovery:        option.DisableMTUDiscovery,
+		EnableDatagrams:                true,
+	}
+	if option.ObfsProtocol != "" {
+		option.Protocol = option.ObfsProtocol
+	}
+	if option.Protocol == "" {
+		option.Protocol = DefaultProtocol
+	}
+	if option.HopInterval == 0 {
+		option.HopInterval = DefaultHopInterval
+	}
+	hopInterval := time.Duration(int64(option.HopInterval)) * time.Second
+	if option.ReceiveWindow == 0 {
+		quicConfig.InitialStreamReceiveWindow = DefaultStreamReceiveWindow / 10
+		quicConfig.MaxStreamReceiveWindow = DefaultStreamReceiveWindow
+	}
+	if option.ReceiveWindow == 0 {
+		quicConfig.InitialConnectionReceiveWindow = DefaultConnectionReceiveWindow / 10
+		quicConfig.MaxConnectionReceiveWindow = DefaultConnectionReceiveWindow
+	}
+	if !quicConfig.DisablePathMTUDiscovery && pmtud_fix.DisablePathMTUDiscovery {
+		log.Infoln("hysteria: Path MTU Discovery is not yet supported on this platform")
+	}
+
+	var auth = []byte(option.AuthString)
+	if option.Auth != "" {
+		auth, err = base64.StdEncoding.DecodeString(option.Auth)
+		if err != nil {
+			return nil, err
+		}
+	}
+	var obfuscator obfs.Obfuscator
+	if len(option.Obfs) > 0 {
+		obfuscator = obfs.NewXPlusObfuscator([]byte(option.Obfs))
+	}
+
+	up, down, err := option.Speed()
+	if err != nil {
+		return nil, err
+	}
+	if option.UpSpeed != 0 {
+		up = uint64(option.UpSpeed * mbpsToBps)
+	}
+	if option.DownSpeed != 0 {
+		down = uint64(option.DownSpeed * mbpsToBps)
+	}
+	client, err := core.NewClient(
+		addr, ports, option.Protocol, auth, tlsConfig, quicConfig, clientTransport, up, down, func(refBPS uint64) congestion.CongestionControl {
+			return hyCongestion.NewBrutalSender(congestion.ByteCount(refBPS))
+		}, obfuscator, hopInterval, option.FastOpen,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("hysteria %s create error: %w", addr, err)
+	}
+	return &Hysteria{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Hysteria,
+			udp:    true,
+			tfo:    option.FastOpen,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option: &option,
+		client: client,
+	}, nil
+}
+
+type hyPacketConn struct {
+	core.UDPConn
+}
+
+func (c *hyPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
+	b, addrStr, err := c.UDPConn.ReadFrom()
+	if err != nil {
+		return
+	}
+	n = copy(p, b)
+	addr = M.ParseSocksaddr(addrStr).UDPAddr()
+	return
+}
+
+func (c *hyPacketConn) WaitReadFrom() (data []byte, put func(), addr net.Addr, err error) {
+	b, addrStr, err := c.UDPConn.ReadFrom()
+	if err != nil {
+		return
+	}
+	data = b
+	addr = M.ParseSocksaddr(addrStr).UDPAddr()
+	return
+}
+
+func (c *hyPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
+	err = c.UDPConn.WriteTo(p, M.SocksaddrFromNet(addr).String())
+	if err != nil {
+		return
+	}
+	n = len(p)
+	return
+}
+
+type hyDialerWithContext struct {
+	hyDialer   func(network string) (net.PacketConn, error)
+	ctx        context.Context
+	remoteAddr func(host string) (net.Addr, error)
+}
+
+func (h *hyDialerWithContext) ListenPacket(rAddr net.Addr) (net.PacketConn, error) {
+	network := "udp"
+	if addrPort, err := netip.ParseAddrPort(rAddr.String()); err == nil {
+		network = dialer.ParseNetwork(network, addrPort.Addr())
+	}
+	return h.hyDialer(network)
+}
+
+func (h *hyDialerWithContext) Context() context.Context {
+	return h.ctx
+}
+
+func (h *hyDialerWithContext) RemoteAddr(host string) (net.Addr, error) {
+	return h.remoteAddr(host)
+}

adapter/outbound/hysteria2.go

@@ -0,0 +1,157 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"runtime"
+	"strconv"
+
+	CN "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	tuicCommon "github.com/Dreamacro/clash/transport/tuic/common"
+
+	"github.com/metacubex/sing-quic/hysteria2"
+
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+func init() {
+	hysteria2.SetCongestionController = tuicCommon.SetCongestionController
+}
+
+type Hysteria2 struct {
+	*Base
+
+	option *Hysteria2Option
+	client *hysteria2.Client
+	dialer proxydialer.SingDialer
+}
+
+type Hysteria2Option struct {
+	BasicOption
+	Name           string   `proxy:"name"`
+	Server         string   `proxy:"server"`
+	Port           int      `proxy:"port"`
+	Up             string   `proxy:"up,omitempty"`
+	Down           string   `proxy:"down,omitempty"`
+	Password       string   `proxy:"password,omitempty"`
+	Obfs           string   `proxy:"obfs,omitempty"`
+	ObfsPassword   string   `proxy:"obfs-password,omitempty"`
+	SNI            string   `proxy:"sni,omitempty"`
+	SkipCertVerify bool     `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint    string   `proxy:"fingerprint,omitempty"`
+	ALPN           []string `proxy:"alpn,omitempty"`
+	CustomCA       string   `proxy:"ca,omitempty"`
+	CustomCAString string   `proxy:"ca-str,omitempty"`
+	CWND           int      `proxy:"cwnd,omitempty"`
+}
+
+func (h *Hysteria2) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	options := h.Base.DialOptions(opts...)
+	h.dialer.SetDialer(dialer.NewDialer(options...))
+	c, err := h.client.DialConn(ctx, M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(CN.NewRefConn(c, h), h), nil
+}
+
+func (h *Hysteria2) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	options := h.Base.DialOptions(opts...)
+	h.dialer.SetDialer(dialer.NewDialer(options...))
+	pc, err := h.client.ListenPacket(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if pc == nil {
+		return nil, errors.New("packetConn is nil")
+	}
+	return newPacketConn(CN.NewRefPacketConn(CN.NewThreadSafePacketConn(pc), h), h), nil
+}
+
+func closeHysteria2(h *Hysteria2) {
+	if h.client != nil {
+		_ = h.client.CloseWithError(errors.New("proxy removed"))
+	}
+}
+
+func NewHysteria2(option Hysteria2Option) (*Hysteria2, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	var salamanderPassword string
+	if len(option.Obfs) > 0 {
+		if option.ObfsPassword == "" {
+			return nil, errors.New("missing obfs password")
+		}
+		switch option.Obfs {
+		case hysteria2.ObfsTypeSalamander:
+			salamanderPassword = option.ObfsPassword
+		default:
+			return nil, fmt.Errorf("unknown obfs type: %s", option.Obfs)
+		}
+	}
+
+	serverName := option.Server
+	if option.SNI != "" {
+		serverName = option.SNI
+	}
+
+	tlsConfig := &tls.Config{
+		ServerName:         serverName,
+		InsecureSkipVerify: option.SkipCertVerify,
+		MinVersion:         tls.VersionTLS13,
+	}
+
+	var err error
+	tlsConfig, err = ca.GetTLSConfig(tlsConfig, option.Fingerprint, option.CustomCA, option.CustomCAString)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(option.ALPN) > 0 {
+		tlsConfig.NextProtos = option.ALPN
+	}
+
+	singDialer := proxydialer.NewByNameSingDialer(option.DialerProxy, dialer.NewDialer())
+
+	clientOptions := hysteria2.ClientOptions{
+		Context:            context.TODO(),
+		Dialer:             singDialer,
+		ServerAddress:      M.ParseSocksaddrHostPort(option.Server, uint16(option.Port)),
+		SendBPS:            StringToBps(option.Up),
+		ReceiveBPS:         StringToBps(option.Down),
+		SalamanderPassword: salamanderPassword,
+		Password:           option.Password,
+		TLSConfig:          tlsConfig,
+		UDPDisabled:        false,
+		CWND:               option.CWND,
+	}
+
+	client, err := hysteria2.NewClient(clientOptions)
+	if err != nil {
+		return nil, err
+	}
+
+	outbound := &Hysteria2{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Hysteria2,
+			udp:    true,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option: &option,
+		client: client,
+		dialer: singDialer,
+	}
+	runtime.SetFinalizer(outbound, closeHysteria2)
+
+	return outbound, nil
+}

adapter/outbound/reality.go

@@ -0,0 +1,35 @@
+package outbound
+
+import (
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
+
+	tlsC "github.com/Dreamacro/clash/component/tls"
+
+	"golang.org/x/crypto/curve25519"
+)
+
+type RealityOptions struct {
+	PublicKey string `proxy:"public-key"`
+	ShortID   string `proxy:"short-id"`
+}
+
+func (o RealityOptions) Parse() (*tlsC.RealityConfig, error) {
+	if o.PublicKey != "" {
+		config := new(tlsC.RealityConfig)
+
+		n, err := base64.RawURLEncoding.Decode(config.PublicKey[:], []byte(o.PublicKey))
+		if err != nil || n != curve25519.ScalarSize {
+			return nil, errors.New("invalid REALITY public key")
+		}
+
+		n, err = hex.Decode(config.ShortID[:], []byte(o.ShortID))
+		if err != nil || n > tlsC.RealityMaxShortIDLen {
+			return nil, errors.New("invalid REALITY short ID")
+		}
+
+		return config, nil
+	}
+	return nil, nil
+}

adapter/outbound/reject.go

@@ -0,0 +1,102 @@
+package outbound
+
+import (
+	"context"
+	"io"
+	"net"
+	"time"
+
+	"github.com/Dreamacro/clash/common/buf"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Reject struct {
+	*Base
+}
+
+type RejectOption struct {
+	Name string `proxy:"name"`
+}
+
+// DialContext implements C.ProxyAdapter
+func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	return NewConn(nopConn{}, r), nil
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (r *Reject) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return newPacketConn(nopPacketConn{}, r), nil
+}
+
+func NewRejectWithOption(option RejectOption) *Reject {
+	return &Reject{
+		Base: &Base{
+			name: option.Name,
+			tp:   C.Direct,
+			udp:  true,
+		},
+	}
+}
+
+func NewReject() *Reject {
+	return &Reject{
+		Base: &Base{
+			name:   "REJECT",
+			tp:     C.Reject,
+			udp:    true,
+			prefer: C.DualStack,
+		},
+	}
+}
+
+func NewPass() *Reject {
+	return &Reject{
+		Base: &Base{
+			name:   "PASS",
+			tp:     C.Pass,
+			udp:    true,
+			prefer: C.DualStack,
+		},
+	}
+}
+
+type nopConn struct{}
+
+func (rw nopConn) Read(b []byte) (int, error) {
+	return 0, io.EOF
+}
+
+func (rw nopConn) ReadBuffer(buffer *buf.Buffer) error {
+	return io.EOF
+}
+
+func (rw nopConn) Write(b []byte) (int, error) {
+	return 0, io.EOF
+}
+
+func (rw nopConn) WriteBuffer(buffer *buf.Buffer) error {
+	return io.EOF
+}
+
+func (rw nopConn) Close() error                     { return nil }
+func (rw nopConn) LocalAddr() net.Addr              { return nil }
+func (rw nopConn) RemoteAddr() net.Addr             { return nil }
+func (rw nopConn) SetDeadline(time.Time) error      { return nil }
+func (rw nopConn) SetReadDeadline(time.Time) error  { return nil }
+func (rw nopConn) SetWriteDeadline(time.Time) error { return nil }
+
+var udpAddrIPv4Unspecified = &net.UDPAddr{IP: net.IPv4zero, Port: 0}
+
+type nopPacketConn struct{}
+
+func (npc nopPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) { return len(b), nil }
+func (npc nopPacketConn) ReadFrom(b []byte) (int, net.Addr, error)           { return 0, nil, io.EOF }
+func (npc nopPacketConn) WaitReadFrom() ([]byte, func(), net.Addr, error) {
+	return nil, nil, nil, io.EOF
+}
+func (npc nopPacketConn) Close() error                     { return nil }
+func (npc nopPacketConn) LocalAddr() net.Addr              { return udpAddrIPv4Unspecified }
+func (npc nopPacketConn) SetDeadline(time.Time) error      { return nil }
+func (npc nopPacketConn) SetReadDeadline(time.Time) error  { return nil }
+func (npc nopPacketConn) SetWriteDeadline(time.Time) error { return nil }

adapter/outbound/shadowsocks.go

@@ -0,0 +1,331 @@
+package outbound
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/restls"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	shadowtls "github.com/Dreamacro/clash/transport/sing-shadowtls"
+	v2rayObfs "github.com/Dreamacro/clash/transport/v2ray-plugin"
+
+	restlsC "github.com/3andne/restls-client-go"
+	shadowsocks "github.com/metacubex/sing-shadowsocks2"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/uot"
+)
+
+type ShadowSocks struct {
+	*Base
+	method shadowsocks.Method
+
+	option *ShadowSocksOption
+	// obfs
+	obfsMode        string
+	obfsOption      *simpleObfsOption
+	v2rayOption     *v2rayObfs.Option
+	shadowTLSOption *shadowtls.ShadowTLSOption
+	restlsConfig    *restlsC.Config
+}
+
+type ShadowSocksOption struct {
+	BasicOption
+	Name              string         `proxy:"name"`
+	Server            string         `proxy:"server"`
+	Port              int            `proxy:"port"`
+	Password          string         `proxy:"password"`
+	Cipher            string         `proxy:"cipher"`
+	UDP               bool           `proxy:"udp,omitempty"`
+	Plugin            string         `proxy:"plugin,omitempty"`
+	PluginOpts        map[string]any `proxy:"plugin-opts,omitempty"`
+	UDPOverTCP        bool           `proxy:"udp-over-tcp,omitempty"`
+	UDPOverTCPVersion int            `proxy:"udp-over-tcp-version,omitempty"`
+	ClientFingerprint string         `proxy:"client-fingerprint,omitempty"`
+}
+
+type simpleObfsOption struct {
+	Mode string `obfs:"mode,omitempty"`
+	Host string `obfs:"host,omitempty"`
+}
+
+type v2rayObfsOption struct {
+	Mode           string            `obfs:"mode"`
+	Host           string            `obfs:"host,omitempty"`
+	Path           string            `obfs:"path,omitempty"`
+	TLS            bool              `obfs:"tls,omitempty"`
+	Fingerprint    string            `obfs:"fingerprint,omitempty"`
+	Headers        map[string]string `obfs:"headers,omitempty"`
+	SkipCertVerify bool              `obfs:"skip-cert-verify,omitempty"`
+	Mux            bool              `obfs:"mux,omitempty"`
+}
+
+type shadowTLSOption struct {
+	Password       string `obfs:"password"`
+	Host           string `obfs:"host"`
+	Fingerprint    string `obfs:"fingerprint,omitempty"`
+	SkipCertVerify bool   `obfs:"skip-cert-verify,omitempty"`
+	Version        int    `obfs:"version,omitempty"`
+}
+
+type restlsOption struct {
+	Password     string `obfs:"password"`
+	Host         string `obfs:"host"`
+	VersionHint  string `obfs:"version-hint"`
+	RestlsScript string `obfs:"restls-script,omitempty"`
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (ss *ShadowSocks) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	useEarly := false
+	switch ss.obfsMode {
+	case "tls":
+		c = obfs.NewTLSObfs(c, ss.obfsOption.Host)
+	case "http":
+		_, port, _ := net.SplitHostPort(ss.addr)
+		c = obfs.NewHTTPObfs(c, ss.obfsOption.Host, port)
+	case "websocket":
+		var err error
+		c, err = v2rayObfs.NewV2rayObfs(ctx, c, ss.v2rayOption)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
+		}
+	case shadowtls.Mode:
+		var err error
+		c, err = shadowtls.NewShadowTLS(ctx, c, ss.shadowTLSOption)
+		if err != nil {
+			return nil, err
+		}
+		useEarly = true
+	case restls.Mode:
+		var err error
+		c, err = restls.NewRestls(ctx, c, ss.restlsConfig)
+		if err != nil {
+			return nil, fmt.Errorf("%s (restls) connect error: %w", ss.addr, err)
+		}
+		useEarly = true
+	}
+	useEarly = useEarly || N.NeedHandshake(c)
+	if metadata.NetWork == C.UDP && ss.option.UDPOverTCP {
+		uotDestination := uot.RequestDestination(uint8(ss.option.UDPOverTCPVersion))
+		if useEarly {
+			return ss.method.DialEarlyConn(c, uotDestination), nil
+		} else {
+			return ss.method.DialConn(c, uotDestination)
+		}
+	}
+	if useEarly {
+		return ss.method.DialEarlyConn(c, M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort)), nil
+	} else {
+		return ss.method.DialConn(c, M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+	}
+}
+
+// DialContext implements C.ProxyAdapter
+func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	return ss.DialContextWithDialer(ctx, dialer.NewDialer(ss.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (ss *ShadowSocks) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(ss.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(ss.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = ss.StreamConnContext(ctx, c, metadata)
+	return NewConn(c, ss), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *ShadowSocks) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return ss.ListenPacketWithDialer(ctx, dialer.NewDialer(ss.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (ss *ShadowSocks) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if len(ss.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(ss.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	if ss.option.UDPOverTCP {
+		tcpConn, err := ss.DialContextWithDialer(ctx, dialer, metadata)
+		if err != nil {
+			return nil, err
+		}
+		return ss.ListenPacketOnStreamConn(ctx, tcpConn, metadata)
+	}
+	addr, err := resolveUDPAddrWithPrefer(ctx, "udp", ss.addr, ss.prefer)
+	if err != nil {
+		return nil, err
+	}
+
+	pc, err := dialer.ListenPacket(ctx, "udp", "", addr.AddrPort())
+	if err != nil {
+		return nil, err
+	}
+	pc = ss.method.DialPacketConn(N.NewBindPacketConn(pc, addr))
+	return newPacketConn(pc, ss), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (ss *ShadowSocks) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+// ListenPacketOnStreamConn implements C.ProxyAdapter
+func (ss *ShadowSocks) ListenPacketOnStreamConn(ctx context.Context, c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if ss.option.UDPOverTCP {
+		// ss uot use stream-oriented udp with a special address, so we need a net.UDPAddr
+		if !metadata.Resolved() {
+			ip, err := resolver.ResolveIP(ctx, metadata.Host)
+			if err != nil {
+				return nil, errors.New("can't resolve ip")
+			}
+			metadata.DstIP = ip
+		}
+
+		destination := M.SocksaddrFromNet(metadata.UDPAddr())
+		if ss.option.UDPOverTCPVersion == uot.LegacyVersion {
+			return newPacketConn(uot.NewConn(c, uot.Request{Destination: destination}), ss), nil
+		} else {
+			return newPacketConn(uot.NewLazyConn(c, uot.Request{Destination: destination}), ss), nil
+		}
+	}
+	return nil, C.ErrNotSupport
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (ss *ShadowSocks) SupportUOT() bool {
+	return ss.option.UDPOverTCP
+}
+
+func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	method, err := shadowsocks.CreateMethod(context.Background(), option.Cipher, shadowsocks.MethodOptions{
+		Password: option.Password,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("ss %s initialize error: %w", addr, err)
+	}
+
+	var v2rayOption *v2rayObfs.Option
+	var obfsOption *simpleObfsOption
+	var shadowTLSOpt *shadowtls.ShadowTLSOption
+	var restlsConfig *restlsC.Config
+	obfsMode := ""
+
+	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
+	if option.Plugin == "obfs" {
+		opts := simpleObfsOption{Host: "bing.com"}
+		if err := decoder.Decode(option.PluginOpts, &opts); err != nil {
+			return nil, fmt.Errorf("ss %s initialize obfs error: %w", addr, err)
+		}
+
+		if opts.Mode != "tls" && opts.Mode != "http" {
+			return nil, fmt.Errorf("ss %s obfs mode error: %s", addr, opts.Mode)
+		}
+		obfsMode = opts.Mode
+		obfsOption = &opts
+	} else if option.Plugin == "v2ray-plugin" {
+		opts := v2rayObfsOption{Host: "bing.com", Mux: true}
+		if err := decoder.Decode(option.PluginOpts, &opts); err != nil {
+			return nil, fmt.Errorf("ss %s initialize v2ray-plugin error: %w", addr, err)
+		}
+
+		if opts.Mode != "websocket" {
+			return nil, fmt.Errorf("ss %s obfs mode error: %s", addr, opts.Mode)
+		}
+		obfsMode = opts.Mode
+		v2rayOption = &v2rayObfs.Option{
+			Host:    opts.Host,
+			Path:    opts.Path,
+			Headers: opts.Headers,
+			Mux:     opts.Mux,
+		}
+
+		if opts.TLS {
+			v2rayOption.TLS = true
+			v2rayOption.SkipCertVerify = opts.SkipCertVerify
+		}
+	} else if option.Plugin == shadowtls.Mode {
+		obfsMode = shadowtls.Mode
+		opt := &shadowTLSOption{
+			Version: 2,
+		}
+		if err := decoder.Decode(option.PluginOpts, opt); err != nil {
+			return nil, fmt.Errorf("ss %s initialize shadow-tls-plugin error: %w", addr, err)
+		}
+
+		shadowTLSOpt = &shadowtls.ShadowTLSOption{
+			Password:          opt.Password,
+			Host:              opt.Host,
+			Fingerprint:       opt.Fingerprint,
+			ClientFingerprint: option.ClientFingerprint,
+			SkipCertVerify:    opt.SkipCertVerify,
+			Version:           opt.Version,
+		}
+	} else if option.Plugin == restls.Mode {
+		obfsMode = restls.Mode
+		restlsOpt := &restlsOption{}
+		if err := decoder.Decode(option.PluginOpts, restlsOpt); err != nil {
+			return nil, fmt.Errorf("ss %s initialize restls-plugin error: %w", addr, err)
+		}
+
+		restlsConfig, err = restlsC.NewRestlsConfig(restlsOpt.Host, restlsOpt.Password, restlsOpt.VersionHint, restlsOpt.RestlsScript, option.ClientFingerprint)
+		if err != nil {
+			return nil, fmt.Errorf("ss %s initialize restls-plugin error: %w", addr, err)
+		}
+
+	}
+	switch option.UDPOverTCPVersion {
+	case uot.Version, uot.LegacyVersion:
+	case 0:
+		option.UDPOverTCPVersion = uot.LegacyVersion
+	default:
+		return nil, fmt.Errorf("ss %s unknown udp over tcp protocol version: %d", addr, option.UDPOverTCPVersion)
+	}
+
+	return &ShadowSocks{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Shadowsocks,
+			udp:    option.UDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		method: method,
+
+		option:          &option,
+		obfsMode:        obfsMode,
+		v2rayOption:     v2rayOption,
+		obfsOption:      obfsOption,
+		shadowTLSOption: shadowTLSOpt,
+		restlsConfig:    restlsConfig,
+	}, nil
+}

adapter/outbound/shadowsocksr.go

@@ -0,0 +1,253 @@
+package outbound
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/shadowsocks/core"
+	"github.com/Dreamacro/clash/transport/shadowsocks/shadowaead"
+	"github.com/Dreamacro/clash/transport/shadowsocks/shadowstream"
+	"github.com/Dreamacro/clash/transport/socks5"
+	"github.com/Dreamacro/clash/transport/ssr/obfs"
+	"github.com/Dreamacro/clash/transport/ssr/protocol"
+)
+
+type ShadowSocksR struct {
+	*Base
+	option   *ShadowSocksROption
+	cipher   core.Cipher
+	obfs     obfs.Obfs
+	protocol protocol.Protocol
+}
+
+type ShadowSocksROption struct {
+	BasicOption
+	Name          string `proxy:"name"`
+	Server        string `proxy:"server"`
+	Port          int    `proxy:"port"`
+	Password      string `proxy:"password"`
+	Cipher        string `proxy:"cipher"`
+	Obfs          string `proxy:"obfs"`
+	ObfsParam     string `proxy:"obfs-param,omitempty"`
+	Protocol      string `proxy:"protocol"`
+	ProtocolParam string `proxy:"protocol-param,omitempty"`
+	UDP           bool   `proxy:"udp,omitempty"`
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (ssr *ShadowSocksR) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	c = ssr.obfs.StreamConn(c)
+	c = ssr.cipher.StreamConn(c)
+	var (
+		iv  []byte
+		err error
+	)
+	switch conn := c.(type) {
+	case *shadowstream.Conn:
+		iv, err = conn.ObtainWriteIV()
+		if err != nil {
+			return nil, err
+		}
+	case *shadowaead.Conn:
+		return nil, fmt.Errorf("invalid connection type")
+	}
+	c = ssr.protocol.StreamConn(c, iv)
+	_, err = c.Write(serializesSocksAddr(metadata))
+	return c, err
+}
+
+// DialContext implements C.ProxyAdapter
+func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	return ssr.DialContextWithDialer(ctx, dialer.NewDialer(ssr.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (ssr *ShadowSocksR) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(ssr.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(ssr.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", ssr.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", ssr.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = ssr.StreamConnContext(ctx, c, metadata)
+	return NewConn(c, ssr), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (ssr *ShadowSocksR) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return ssr.ListenPacketWithDialer(ctx, dialer.NewDialer(ssr.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (ssr *ShadowSocksR) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if len(ssr.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(ssr.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	addr, err := resolveUDPAddrWithPrefer(ctx, "udp", ssr.addr, ssr.prefer)
+	if err != nil {
+		return nil, err
+	}
+
+	pc, err := dialer.ListenPacket(ctx, "udp", "", addr.AddrPort())
+	if err != nil {
+		return nil, err
+	}
+
+	epc := ssr.cipher.PacketConn(N.NewEnhancePacketConn(pc))
+	epc = ssr.protocol.PacketConn(epc)
+	return newPacketConn(&ssrPacketConn{EnhancePacketConn: epc, rAddr: addr}, ssr), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (ssr *ShadowSocksR) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+func NewShadowSocksR(option ShadowSocksROption) (*ShadowSocksR, error) {
+	// SSR protocol compatibility
+	// https://github.com/Dreamacro/clash/pull/2056
+	if option.Cipher == "none" {
+		option.Cipher = "dummy"
+	}
+
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	cipher := option.Cipher
+	password := option.Password
+	coreCiph, err := core.PickCipher(cipher, nil, password)
+	if err != nil {
+		return nil, fmt.Errorf("ssr %s initialize error: %w", addr, err)
+	}
+	var (
+		ivSize int
+		key    []byte
+	)
+
+	if option.Cipher == "dummy" {
+		ivSize = 0
+		key = core.Kdf(option.Password, 16)
+	} else {
+		ciph, ok := coreCiph.(*core.StreamCipher)
+		if !ok {
+			return nil, fmt.Errorf("%s is not none or a supported stream cipher in ssr", cipher)
+		}
+		ivSize = ciph.IVSize()
+		key = ciph.Key
+	}
+
+	obfs, obfsOverhead, err := obfs.PickObfs(option.Obfs, &obfs.Base{
+		Host:   option.Server,
+		Port:   option.Port,
+		Key:    key,
+		IVSize: ivSize,
+		Param:  option.ObfsParam,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("ssr %s initialize obfs error: %w", addr, err)
+	}
+
+	protocol, err := protocol.PickProtocol(option.Protocol, &protocol.Base{
+		Key:      key,
+		Overhead: obfsOverhead,
+		Param:    option.ProtocolParam,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("ssr %s initialize protocol error: %w", addr, err)
+	}
+
+	return &ShadowSocksR{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.ShadowsocksR,
+			udp:    option.UDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option:   &option,
+		cipher:   coreCiph,
+		obfs:     obfs,
+		protocol: protocol,
+	}, nil
+}
+
+type ssrPacketConn struct {
+	N.EnhancePacketConn
+	rAddr net.Addr
+}
+
+func (spc *ssrPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
+	packet, err := socks5.EncodeUDPPacket(socks5.ParseAddrToSocksAddr(addr), b)
+	if err != nil {
+		return
+	}
+	return spc.EnhancePacketConn.WriteTo(packet[3:], spc.rAddr)
+}
+
+func (spc *ssrPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
+	n, _, e := spc.EnhancePacketConn.ReadFrom(b)
+	if e != nil {
+		return 0, nil, e
+	}
+
+	addr := socks5.SplitAddr(b[:n])
+	if addr == nil {
+		return 0, nil, errors.New("parse addr error")
+	}
+
+	udpAddr := addr.UDPAddr()
+	if udpAddr == nil {
+		return 0, nil, errors.New("parse addr error")
+	}
+
+	copy(b, b[len(addr):])
+	return n - len(addr), udpAddr, e
+}
+
+func (spc *ssrPacketConn) WaitReadFrom() (data []byte, put func(), addr net.Addr, err error) {
+	data, put, _, err = spc.EnhancePacketConn.WaitReadFrom()
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	_addr := socks5.SplitAddr(data)
+	if _addr == nil {
+		if put != nil {
+			put()
+		}
+		return nil, nil, nil, errors.New("parse addr error")
+	}
+
+	addr = _addr.UDPAddr()
+	if addr == nil {
+		if put != nil {
+			put()
+		}
+		return nil, nil, nil, errors.New("parse addr error")
+	}
+
+	data = data[len(_addr):]
+	return
+}

adapter/outbound/singmux.go

@@ -0,0 +1,118 @@
+package outbound
+
+import (
+	"context"
+	"errors"
+	"runtime"
+
+	CN "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+
+	mux "github.com/sagernet/sing-mux"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+type SingMux struct {
+	C.ProxyAdapter
+	base    ProxyBase
+	client  *mux.Client
+	dialer  proxydialer.SingDialer
+	onlyTcp bool
+}
+
+type SingMuxOption struct {
+	Enabled        bool   `proxy:"enabled,omitempty"`
+	Protocol       string `proxy:"protocol,omitempty"`
+	MaxConnections int    `proxy:"max-connections,omitempty"`
+	MinStreams     int    `proxy:"min-streams,omitempty"`
+	MaxStreams     int    `proxy:"max-streams,omitempty"`
+	Padding        bool   `proxy:"padding,omitempty"`
+	Statistic      bool   `proxy:"statistic,omitempty"`
+	OnlyTcp        bool   `proxy:"only-tcp,omitempty"`
+}
+
+type ProxyBase interface {
+	DialOptions(opts ...dialer.Option) []dialer.Option
+}
+
+func (s *SingMux) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	options := s.base.DialOptions(opts...)
+	s.dialer.SetDialer(dialer.NewDialer(options...))
+	c, err := s.client.DialContext(ctx, "tcp", M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(CN.NewRefConn(c, s), s.ProxyAdapter), err
+}
+
+func (s *SingMux) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	if s.onlyTcp {
+		return s.ProxyAdapter.ListenPacketContext(ctx, metadata, opts...)
+	}
+	options := s.base.DialOptions(opts...)
+	s.dialer.SetDialer(dialer.NewDialer(options...))
+
+	// sing-mux use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+
+	pc, err := s.client.ListenPacket(ctx, M.SocksaddrFromNet(metadata.UDPAddr()))
+	if err != nil {
+		return nil, err
+	}
+	if pc == nil {
+		return nil, E.New("packetConn is nil")
+	}
+	return newPacketConn(CN.NewRefPacketConn(CN.NewThreadSafePacketConn(pc), s), s.ProxyAdapter), nil
+}
+
+func (s *SingMux) SupportUDP() bool {
+	if s.onlyTcp {
+		return s.ProxyAdapter.SupportUDP()
+	}
+	return true
+}
+
+func (s *SingMux) SupportUOT() bool {
+	if s.onlyTcp {
+		return s.ProxyAdapter.SupportUOT()
+	}
+	return true
+}
+
+func closeSingMux(s *SingMux) {
+	_ = s.client.Close()
+}
+
+func NewSingMux(option SingMuxOption, proxy C.ProxyAdapter, base ProxyBase) (C.ProxyAdapter, error) {
+	singDialer := proxydialer.NewSingDialer(proxy, dialer.NewDialer(), option.Statistic)
+	client, err := mux.NewClient(mux.Options{
+		Dialer:         singDialer,
+		Protocol:       option.Protocol,
+		MaxConnections: option.MaxConnections,
+		MinStreams:     option.MinStreams,
+		MaxStreams:     option.MaxStreams,
+		Padding:        option.Padding,
+	})
+	if err != nil {
+		return nil, err
+	}
+	outbound := &SingMux{
+		ProxyAdapter: proxy,
+		base:         base,
+		client:       client,
+		dialer:       singDialer,
+		onlyTcp:      option.OnlyTcp,
+	}
+	runtime.SetFinalizer(outbound, closeSingMux)
+	return outbound, nil
+}

adapter/outbound/snell.go

@@ -0,0 +1,216 @@
+package outbound
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	"github.com/Dreamacro/clash/transport/snell"
+)
+
+type Snell struct {
+	*Base
+	option     *SnellOption
+	psk        []byte
+	pool       *snell.Pool
+	obfsOption *simpleObfsOption
+	version    int
+}
+
+type SnellOption struct {
+	BasicOption
+	Name     string         `proxy:"name"`
+	Server   string         `proxy:"server"`
+	Port     int            `proxy:"port"`
+	Psk      string         `proxy:"psk"`
+	UDP      bool           `proxy:"udp,omitempty"`
+	Version  int            `proxy:"version,omitempty"`
+	ObfsOpts map[string]any `proxy:"obfs-opts,omitempty"`
+}
+
+type streamOption struct {
+	psk        []byte
+	version    int
+	addr       string
+	obfsOption *simpleObfsOption
+}
+
+func streamConn(c net.Conn, option streamOption) *snell.Snell {
+	switch option.obfsOption.Mode {
+	case "tls":
+		c = obfs.NewTLSObfs(c, option.obfsOption.Host)
+	case "http":
+		_, port, _ := net.SplitHostPort(option.addr)
+		c = obfs.NewHTTPObfs(c, option.obfsOption.Host, port)
+	}
+	return snell.StreamConn(c, option.psk, option.version)
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (s *Snell) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	c = streamConn(c, streamOption{s.psk, s.version, s.addr, s.obfsOption})
+	if metadata.NetWork == C.UDP {
+		err := snell.WriteUDPHeader(c, s.version)
+		return c, err
+	}
+	err := snell.WriteHeader(c, metadata.String(), uint(metadata.DstPort), s.version)
+	return c, err
+}
+
+// DialContext implements C.ProxyAdapter
+func (s *Snell) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	if s.version == snell.Version2 && len(opts) == 0 {
+		c, err := s.pool.Get()
+		if err != nil {
+			return nil, err
+		}
+
+		if err = snell.WriteHeader(c, metadata.String(), uint(metadata.DstPort), s.version); err != nil {
+			c.Close()
+			return nil, err
+		}
+		return NewConn(c, s), err
+	}
+
+	return s.DialContextWithDialer(ctx, dialer.NewDialer(s.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (s *Snell) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(s.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(s.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", s.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", s.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = s.StreamConnContext(ctx, c, metadata)
+	return NewConn(c, s), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (s *Snell) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return s.ListenPacketWithDialer(ctx, dialer.NewDialer(s.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (s *Snell) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (C.PacketConn, error) {
+	var err error
+	if len(s.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(s.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", s.addr)
+	if err != nil {
+		return nil, err
+	}
+	N.TCPKeepAlive(c)
+	c = streamConn(c, streamOption{s.psk, s.version, s.addr, s.obfsOption})
+
+	err = snell.WriteUDPHeader(c, s.version)
+	if err != nil {
+		return nil, err
+	}
+
+	pc := snell.PacketConn(c)
+	return newPacketConn(pc, s), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (s *Snell) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (s *Snell) SupportUOT() bool {
+	return true
+}
+
+func NewSnell(option SnellOption) (*Snell, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	psk := []byte(option.Psk)
+
+	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
+	obfsOption := &simpleObfsOption{Host: "bing.com"}
+	if err := decoder.Decode(option.ObfsOpts, obfsOption); err != nil {
+		return nil, fmt.Errorf("snell %s initialize obfs error: %w", addr, err)
+	}
+
+	switch obfsOption.Mode {
+	case "tls", "http", "":
+		break
+	default:
+		return nil, fmt.Errorf("snell %s obfs mode error: %s", addr, obfsOption.Mode)
+	}
+
+	// backward compatible
+	if option.Version == 0 {
+		option.Version = snell.DefaultSnellVersion
+	}
+	switch option.Version {
+	case snell.Version1, snell.Version2:
+		if option.UDP {
+			return nil, fmt.Errorf("snell version %d not support UDP", option.Version)
+		}
+	case snell.Version3:
+	default:
+		return nil, fmt.Errorf("snell version error: %d", option.Version)
+	}
+
+	s := &Snell{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Snell,
+			udp:    option.UDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option:     &option,
+		psk:        psk,
+		obfsOption: obfsOption,
+		version:    option.Version,
+	}
+
+	if option.Version == snell.Version2 {
+		s.pool = snell.NewPool(func(ctx context.Context) (*snell.Snell, error) {
+			var err error
+			var cDialer C.Dialer = dialer.NewDialer(s.Base.DialOptions()...)
+			if len(s.option.DialerProxy) > 0 {
+				cDialer, err = proxydialer.NewByName(s.option.DialerProxy, cDialer)
+				if err != nil {
+					return nil, err
+				}
+			}
+			c, err := cDialer.DialContext(ctx, "tcp", addr)
+			if err != nil {
+				return nil, err
+			}
+
+			N.TCPKeepAlive(c)
+			return streamConn(c, streamOption{psk, option.Version, addr, obfsOption}), nil
+		})
+	}
+	return s, nil
+}

adapter/outbound/socks5.go

@@ -0,0 +1,250 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/netip"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+type Socks5 struct {
+	*Base
+	option         *Socks5Option
+	user           string
+	pass           string
+	tls            bool
+	skipCertVerify bool
+	tlsConfig      *tls.Config
+}
+
+type Socks5Option struct {
+	BasicOption
+	Name           string `proxy:"name"`
+	Server         string `proxy:"server"`
+	Port           int    `proxy:"port"`
+	UserName       string `proxy:"username,omitempty"`
+	Password       string `proxy:"password,omitempty"`
+	TLS            bool   `proxy:"tls,omitempty"`
+	UDP            bool   `proxy:"udp,omitempty"`
+	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint    string `proxy:"fingerprint,omitempty"`
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (ss *Socks5) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	if ss.tls {
+		cc := tls.Client(c, ss.tlsConfig)
+		err := cc.HandshakeContext(ctx)
+		c = cc
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
+		}
+	}
+
+	var user *socks5.User
+	if ss.user != "" {
+		user = &socks5.User{
+			Username: ss.user,
+			Password: ss.pass,
+		}
+	}
+	if _, err := socks5.ClientHandshake(c, serializesSocksAddr(metadata), socks5.CmdConnect, user); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+// DialContext implements C.ProxyAdapter
+func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	return ss.DialContextWithDialer(ctx, dialer.NewDialer(ss.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (ss *Socks5) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(ss.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(ss.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = ss.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(c, ss), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (ss *Socks5) SupportWithDialer() C.NetWork {
+	return C.TCP
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *Socks5) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	var cDialer C.Dialer = dialer.NewDialer(ss.Base.DialOptions(opts...)...)
+	if len(ss.option.DialerProxy) > 0 {
+		cDialer, err = proxydialer.NewByName(ss.option.DialerProxy, cDialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := cDialer.DialContext(ctx, "tcp", ss.addr)
+	if err != nil {
+		err = fmt.Errorf("%s connect error: %w", ss.addr, err)
+		return
+	}
+
+	if ss.tls {
+		cc := tls.Client(c, ss.tlsConfig)
+		ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTLSTimeout)
+		defer cancel()
+		err = cc.HandshakeContext(ctx)
+		c = cc
+	}
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	N.TCPKeepAlive(c)
+	var user *socks5.User
+	if ss.user != "" {
+		user = &socks5.User{
+			Username: ss.user,
+			Password: ss.pass,
+		}
+	}
+
+	udpAssocateAddr := socks5.AddrFromStdAddrPort(netip.AddrPortFrom(netip.IPv4Unspecified(), 0))
+	bindAddr, err := socks5.ClientHandshake(c, udpAssocateAddr, socks5.CmdUDPAssociate, user)
+	if err != nil {
+		err = fmt.Errorf("client hanshake error: %w", err)
+		return
+	}
+
+	// Support unspecified UDP bind address.
+	bindUDPAddr := bindAddr.UDPAddr()
+	if bindUDPAddr == nil {
+		err = errors.New("invalid UDP bind address")
+		return
+	} else if bindUDPAddr.IP.IsUnspecified() {
+		serverAddr, err := resolveUDPAddr(ctx, "udp", ss.Addr())
+		if err != nil {
+			return nil, err
+		}
+
+		bindUDPAddr.IP = serverAddr.IP
+	}
+
+	pc, err := cDialer.ListenPacket(ctx, "udp", "", bindUDPAddr.AddrPort())
+	if err != nil {
+		return
+	}
+
+	go func() {
+		io.Copy(io.Discard, c)
+		c.Close()
+		// A UDP association terminates when the TCP connection that the UDP
+		// ASSOCIATE request arrived on terminates. RFC1928
+		pc.Close()
+	}()
+
+	return newPacketConn(&socksPacketConn{PacketConn: pc, rAddr: bindUDPAddr, tcpConn: c}, ss), nil
+}
+
+func NewSocks5(option Socks5Option) (*Socks5, error) {
+	var tlsConfig *tls.Config
+	if option.TLS {
+		tlsConfig = &tls.Config{
+			InsecureSkipVerify: option.SkipCertVerify,
+			ServerName:         option.Server,
+		}
+
+		var err error
+		tlsConfig, err = ca.GetSpecifiedFingerprintTLSConfig(tlsConfig, option.Fingerprint)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &Socks5{
+		Base: &Base{
+			name:   option.Name,
+			addr:   net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:     C.Socks5,
+			udp:    option.UDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option:         &option,
+		user:           option.UserName,
+		pass:           option.Password,
+		tls:            option.TLS,
+		skipCertVerify: option.SkipCertVerify,
+		tlsConfig:      tlsConfig,
+	}, nil
+}
+
+type socksPacketConn struct {
+	net.PacketConn
+	rAddr   net.Addr
+	tcpConn net.Conn
+}
+
+func (uc *socksPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
+	packet, err := socks5.EncodeUDPPacket(socks5.ParseAddrToSocksAddr(addr), b)
+	if err != nil {
+		return
+	}
+	return uc.PacketConn.WriteTo(packet, uc.rAddr)
+}
+
+func (uc *socksPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
+	n, _, e := uc.PacketConn.ReadFrom(b)
+	if e != nil {
+		return 0, nil, e
+	}
+	addr, payload, err := socks5.DecodeUDPPacket(b)
+	if err != nil {
+		return 0, nil, err
+	}
+
+	udpAddr := addr.UDPAddr()
+	if udpAddr == nil {
+		return 0, nil, errors.New("parse udp addr error")
+	}
+
+	// due to DecodeUDPPacket is mutable, record addr length
+	copy(b, payload)
+	return n - len(addr) - 3, udpAddr, nil
+}
+
+func (uc *socksPacketConn) Close() error {
+	uc.tcpConn.Close()
+	return uc.PacketConn.Close()
+}

adapter/outbound/trojan.go

@@ -0,0 +1,300 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	tlsC "github.com/Dreamacro/clash/component/tls"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/trojan"
+)
+
+type Trojan struct {
+	*Base
+	instance *trojan.Trojan
+	option   *TrojanOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *gun.TransportWrap
+
+	realityConfig *tlsC.RealityConfig
+}
+
+type TrojanOption struct {
+	BasicOption
+	Name              string         `proxy:"name"`
+	Server            string         `proxy:"server"`
+	Port              int            `proxy:"port"`
+	Password          string         `proxy:"password"`
+	ALPN              []string       `proxy:"alpn,omitempty"`
+	SNI               string         `proxy:"sni,omitempty"`
+	SkipCertVerify    bool           `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint       string         `proxy:"fingerprint,omitempty"`
+	UDP               bool           `proxy:"udp,omitempty"`
+	Network           string         `proxy:"network,omitempty"`
+	RealityOpts       RealityOptions `proxy:"reality-opts,omitempty"`
+	GrpcOpts          GrpcOptions    `proxy:"grpc-opts,omitempty"`
+	WSOpts            WSOptions      `proxy:"ws-opts,omitempty"`
+	ClientFingerprint string         `proxy:"client-fingerprint,omitempty"`
+}
+
+func (t *Trojan) plainStream(ctx context.Context, c net.Conn) (net.Conn, error) {
+	if t.option.Network == "ws" {
+		host, port, _ := net.SplitHostPort(t.addr)
+		wsOpts := &trojan.WebsocketOption{
+			Host: host,
+			Port: port,
+			Path: t.option.WSOpts.Path,
+		}
+
+		if t.option.SNI != "" {
+			wsOpts.Host = t.option.SNI
+		}
+
+		if len(t.option.WSOpts.Headers) != 0 {
+			header := http.Header{}
+			for key, value := range t.option.WSOpts.Headers {
+				header.Add(key, value)
+			}
+			wsOpts.Headers = header
+		}
+
+		return t.instance.StreamWebsocketConn(ctx, c, wsOpts)
+	}
+
+	return t.instance.StreamConn(ctx, c)
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (t *Trojan) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+
+	if tlsC.HaveGlobalFingerprint() && len(t.option.ClientFingerprint) == 0 {
+		t.option.ClientFingerprint = tlsC.GetGlobalFingerprint()
+	}
+
+	if t.transport != nil {
+		c, err = gun.StreamGunWithConn(c, t.gunTLSConfig, t.gunConfig, t.realityConfig)
+	} else {
+		c, err = t.plainStream(ctx, c)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+
+	if metadata.NetWork == C.UDP {
+		err = t.instance.WriteHeader(c, trojan.CommandUDP, serializesSocksAddr(metadata))
+		return c, err
+	}
+	err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata))
+	return c, err
+}
+
+// DialContext implements C.ProxyAdapter
+func (t *Trojan) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	// gun transport
+	if t.transport != nil && len(opts) == 0 {
+		c, err := gun.StreamGunWithTransport(t.transport, t.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		if err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata)); err != nil {
+			c.Close()
+			return nil, err
+		}
+
+		return NewConn(c, t), nil
+	}
+	return t.DialContextWithDialer(ctx, dialer.NewDialer(t.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (t *Trojan) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(t.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(t.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", t.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+	N.TCPKeepAlive(c)
+
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = t.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(c, t), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (t *Trojan) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	var c net.Conn
+
+	// grpc transport
+	if t.transport != nil && len(opts) == 0 {
+		c, err = gun.StreamGunWithTransport(t.transport, t.gunConfig)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+		}
+		defer func(c net.Conn) {
+			safeConnClose(c, err)
+		}(c)
+		err = t.instance.WriteHeader(c, trojan.CommandUDP, serializesSocksAddr(metadata))
+		if err != nil {
+			return nil, err
+		}
+
+		pc := t.instance.PacketConn(c)
+		return newPacketConn(pc, t), err
+	}
+	return t.ListenPacketWithDialer(ctx, dialer.NewDialer(t.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (t *Trojan) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if len(t.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(t.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", t.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+	N.TCPKeepAlive(c)
+	c, err = t.plainStream(ctx, c)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+
+	err = t.instance.WriteHeader(c, trojan.CommandUDP, serializesSocksAddr(metadata))
+	if err != nil {
+		return nil, err
+	}
+
+	pc := t.instance.PacketConn(c)
+	return newPacketConn(pc, t), err
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (t *Trojan) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+// ListenPacketOnStreamConn implements C.ProxyAdapter
+func (t *Trojan) ListenPacketOnStreamConn(c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	pc := t.instance.PacketConn(c)
+	return newPacketConn(pc, t), err
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (t *Trojan) SupportUOT() bool {
+	return true
+}
+
+func NewTrojan(option TrojanOption) (*Trojan, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+
+	tOption := &trojan.Option{
+		Password:          option.Password,
+		ALPN:              option.ALPN,
+		ServerName:        option.Server,
+		SkipCertVerify:    option.SkipCertVerify,
+		Fingerprint:       option.Fingerprint,
+		ClientFingerprint: option.ClientFingerprint,
+	}
+
+	if option.SNI != "" {
+		tOption.ServerName = option.SNI
+	}
+
+	t := &Trojan{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Trojan,
+			udp:    option.UDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		instance: trojan.New(tOption),
+		option:   &option,
+	}
+
+	var err error
+	t.realityConfig, err = option.RealityOpts.Parse()
+	if err != nil {
+		return nil, err
+	}
+	tOption.Reality = t.realityConfig
+
+	if option.Network == "grpc" {
+		dialFn := func(network, addr string) (net.Conn, error) {
+			var err error
+			var cDialer C.Dialer = dialer.NewDialer(t.Base.DialOptions()...)
+			if len(t.option.DialerProxy) > 0 {
+				cDialer, err = proxydialer.NewByName(t.option.DialerProxy, cDialer)
+				if err != nil {
+					return nil, err
+				}
+			}
+			c, err := cDialer.DialContext(context.Background(), "tcp", t.addr)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", t.addr, err.Error())
+			}
+			N.TCPKeepAlive(c)
+			return c, nil
+		}
+
+		tlsConfig := &tls.Config{
+			NextProtos:         option.ALPN,
+			MinVersion:         tls.VersionTLS12,
+			InsecureSkipVerify: tOption.SkipCertVerify,
+			ServerName:         tOption.ServerName,
+		}
+
+		var err error
+		tlsConfig, err = ca.GetSpecifiedFingerprintTLSConfig(tlsConfig, option.Fingerprint)
+		if err != nil {
+			return nil, err
+		}
+
+		t.transport = gun.NewHTTP2Client(dialFn, tlsConfig, tOption.ClientFingerprint, t.realityConfig)
+
+		t.gunTLSConfig = tlsConfig
+		t.gunConfig = &gun.Config{
+			ServiceName: option.GrpcOpts.GrpcServiceName,
+			Host:        tOption.ServerName,
+		}
+	}
+
+	return t, nil
+}

adapter/outbound/tuic.go

@@ -0,0 +1,316 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"math"
+	"net"
+	"strconv"
+	"time"
+
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/tuic"
+
+	"github.com/gofrs/uuid/v5"
+	"github.com/metacubex/quic-go"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/uot"
+)
+
+type Tuic struct {
+	*Base
+	option *TuicOption
+	client *tuic.PoolClient
+}
+
+type TuicOption struct {
+	BasicOption
+	Name                  string   `proxy:"name"`
+	Server                string   `proxy:"server"`
+	Port                  int      `proxy:"port"`
+	Token                 string   `proxy:"token,omitempty"`
+	UUID                  string   `proxy:"uuid,omitempty"`
+	Password              string   `proxy:"password,omitempty"`
+	Ip                    string   `proxy:"ip,omitempty"`
+	HeartbeatInterval     int      `proxy:"heartbeat-interval,omitempty"`
+	ALPN                  []string `proxy:"alpn,omitempty"`
+	ReduceRtt             bool     `proxy:"reduce-rtt,omitempty"`
+	RequestTimeout        int      `proxy:"request-timeout,omitempty"`
+	UdpRelayMode          string   `proxy:"udp-relay-mode,omitempty"`
+	CongestionController  string   `proxy:"congestion-controller,omitempty"`
+	DisableSni            bool     `proxy:"disable-sni,omitempty"`
+	MaxUdpRelayPacketSize int      `proxy:"max-udp-relay-packet-size,omitempty"`
+
+	FastOpen             bool   `proxy:"fast-open,omitempty"`
+	MaxOpenStreams       int    `proxy:"max-open-streams,omitempty"`
+	CWND                 int    `proxy:"cwnd,omitempty"`
+	SkipCertVerify       bool   `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint          string `proxy:"fingerprint,omitempty"`
+	CustomCA             string `proxy:"ca,omitempty"`
+	CustomCAString       string `proxy:"ca-str,omitempty"`
+	ReceiveWindowConn    int    `proxy:"recv-window-conn,omitempty"`
+	ReceiveWindow        int    `proxy:"recv-window,omitempty"`
+	DisableMTUDiscovery  bool   `proxy:"disable-mtu-discovery,omitempty"`
+	MaxDatagramFrameSize int    `proxy:"max-datagram-frame-size,omitempty"`
+	SNI                  string `proxy:"sni,omitempty"`
+
+	UDPOverStream        bool `proxy:"udp-over-stream,omitempty"`
+	UDPOverStreamVersion int  `proxy:"udp-over-stream-version,omitempty"`
+}
+
+// DialContext implements C.ProxyAdapter
+func (t *Tuic) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	return t.DialContextWithDialer(ctx, dialer.NewDialer(t.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (t *Tuic) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (C.Conn, error) {
+	conn, err := t.client.DialContextWithDialer(ctx, metadata, dialer, t.dialWithDialer)
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(conn, t), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (t *Tuic) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	return t.ListenPacketWithDialer(ctx, dialer.NewDialer(t.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (t *Tuic) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if t.option.UDPOverStream {
+		uotDestination := uot.RequestDestination(uint8(t.option.UDPOverStreamVersion))
+		uotMetadata := *metadata
+		uotMetadata.Host = uotDestination.Fqdn
+		uotMetadata.DstPort = uotDestination.Port
+		c, err := t.DialContextWithDialer(ctx, dialer, &uotMetadata)
+		if err != nil {
+			return nil, err
+		}
+
+		// tuic uos use stream-oriented udp with a special address, so we need a net.UDPAddr
+		if !metadata.Resolved() {
+			ip, err := resolver.ResolveIP(ctx, metadata.Host)
+			if err != nil {
+				return nil, errors.New("can't resolve ip")
+			}
+			metadata.DstIP = ip
+		}
+
+		destination := M.SocksaddrFromNet(metadata.UDPAddr())
+		if t.option.UDPOverStreamVersion == uot.LegacyVersion {
+			return newPacketConn(uot.NewConn(c, uot.Request{Destination: destination}), t), nil
+		} else {
+			return newPacketConn(uot.NewLazyConn(c, uot.Request{Destination: destination}), t), nil
+		}
+	}
+	pc, err := t.client.ListenPacketWithDialer(ctx, metadata, dialer, t.dialWithDialer)
+	if err != nil {
+		return nil, err
+	}
+	return newPacketConn(pc, t), nil
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (t *Tuic) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+func (t *Tuic) dialWithDialer(ctx context.Context, dialer C.Dialer) (transport *quic.Transport, addr net.Addr, err error) {
+	if len(t.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(t.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, nil, err
+		}
+	}
+	udpAddr, err := resolveUDPAddrWithPrefer(ctx, "udp", t.addr, t.prefer)
+	if err != nil {
+		return nil, nil, err
+	}
+	addr = udpAddr
+	var pc net.PacketConn
+	pc, err = dialer.ListenPacket(ctx, "udp", "", udpAddr.AddrPort())
+	if err != nil {
+		return nil, nil, err
+	}
+	transport = &quic.Transport{Conn: pc}
+	transport.SetCreatedConn(true) // auto close conn
+	transport.SetSingleUse(true)   // auto close transport
+	return
+}
+
+func NewTuic(option TuicOption) (*Tuic, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	serverName := option.Server
+	tlsConfig := &tls.Config{
+		ServerName:         serverName,
+		InsecureSkipVerify: option.SkipCertVerify,
+		MinVersion:         tls.VersionTLS13,
+	}
+	if option.SNI != "" {
+		tlsConfig.ServerName = option.SNI
+	}
+
+	var err error
+	tlsConfig, err = ca.GetTLSConfig(tlsConfig, option.Fingerprint, option.CustomCA, option.CustomCAString)
+	if err != nil {
+		return nil, err
+	}
+
+	if option.ALPN != nil { // structure's Decode will ensure value not nil when input has value even it was set an empty array
+		tlsConfig.NextProtos = option.ALPN
+	} else {
+		tlsConfig.NextProtos = []string{"h3"}
+	}
+
+	if option.RequestTimeout == 0 {
+		option.RequestTimeout = 8000
+	}
+
+	if option.HeartbeatInterval <= 0 {
+		option.HeartbeatInterval = 10000
+	}
+
+	udpRelayMode := tuic.QUIC
+	if option.UdpRelayMode != "quic" {
+		udpRelayMode = tuic.NATIVE
+	}
+
+	if option.MaxUdpRelayPacketSize == 0 {
+		option.MaxUdpRelayPacketSize = 1252
+	}
+
+	if option.MaxOpenStreams == 0 {
+		option.MaxOpenStreams = 100
+	}
+
+	if option.CWND == 0 {
+		option.CWND = 32
+	}
+
+	packetOverHead := tuic.PacketOverHeadV4
+	if len(option.Token) == 0 {
+		packetOverHead = tuic.PacketOverHeadV5
+	}
+
+	if option.MaxDatagramFrameSize == 0 {
+		option.MaxDatagramFrameSize = option.MaxUdpRelayPacketSize + packetOverHead
+	}
+
+	if option.MaxDatagramFrameSize > 1400 {
+		option.MaxDatagramFrameSize = 1400
+	}
+	option.MaxUdpRelayPacketSize = option.MaxDatagramFrameSize - packetOverHead
+
+	// ensure server's incoming stream can handle correctly, increase to 1.1x
+	quicMaxOpenStreams := int64(option.MaxOpenStreams)
+	quicMaxOpenStreams = quicMaxOpenStreams + int64(math.Ceil(float64(quicMaxOpenStreams)/10.0))
+	quicConfig := &quic.Config{
+		InitialStreamReceiveWindow:     uint64(option.ReceiveWindowConn),
+		MaxStreamReceiveWindow:         uint64(option.ReceiveWindowConn),
+		InitialConnectionReceiveWindow: uint64(option.ReceiveWindow),
+		MaxConnectionReceiveWindow:     uint64(option.ReceiveWindow),
+		MaxIncomingStreams:             quicMaxOpenStreams,
+		MaxIncomingUniStreams:          quicMaxOpenStreams,
+		KeepAlivePeriod:                time.Duration(option.HeartbeatInterval) * time.Millisecond,
+		DisablePathMTUDiscovery:        option.DisableMTUDiscovery,
+		MaxDatagramFrameSize:           int64(option.MaxDatagramFrameSize),
+		EnableDatagrams:                true,
+	}
+	if option.ReceiveWindowConn == 0 {
+		quicConfig.InitialStreamReceiveWindow = tuic.DefaultStreamReceiveWindow / 10
+		quicConfig.MaxStreamReceiveWindow = tuic.DefaultStreamReceiveWindow
+	}
+	if option.ReceiveWindow == 0 {
+		quicConfig.InitialConnectionReceiveWindow = tuic.DefaultConnectionReceiveWindow / 10
+		quicConfig.MaxConnectionReceiveWindow = tuic.DefaultConnectionReceiveWindow
+	}
+
+	if len(option.Ip) > 0 {
+		addr = net.JoinHostPort(option.Ip, strconv.Itoa(option.Port))
+	}
+	if option.DisableSni {
+		tlsConfig.ServerName = ""
+		tlsConfig.InsecureSkipVerify = true // tls: either ServerName or InsecureSkipVerify must be specified in the tls.Config
+	}
+
+	switch option.UDPOverStreamVersion {
+	case uot.Version, uot.LegacyVersion:
+	case 0:
+		option.UDPOverStreamVersion = uot.LegacyVersion
+	default:
+		return nil, fmt.Errorf("tuic %s unknown udp over stream protocol version: %d", addr, option.UDPOverStreamVersion)
+	}
+
+	t := &Tuic{
+		Base: &Base{
+			name:   option.Name,
+			addr:   addr,
+			tp:     C.Tuic,
+			udp:    true,
+			tfo:    option.FastOpen,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		option: &option,
+	}
+
+	clientMaxOpenStreams := int64(option.MaxOpenStreams)
+
+	// to avoid tuic's "too many open streams", decrease to 0.9x
+	if clientMaxOpenStreams == 100 {
+		clientMaxOpenStreams = clientMaxOpenStreams - int64(math.Ceil(float64(clientMaxOpenStreams)/10.0))
+	}
+
+	if clientMaxOpenStreams < 1 {
+		clientMaxOpenStreams = 1
+	}
+
+	if len(option.Token) > 0 {
+		tkn := tuic.GenTKN(option.Token)
+		clientOption := &tuic.ClientOptionV4{
+			TlsConfig:             tlsConfig,
+			QuicConfig:            quicConfig,
+			Token:                 tkn,
+			UdpRelayMode:          udpRelayMode,
+			CongestionController:  option.CongestionController,
+			ReduceRtt:             option.ReduceRtt,
+			RequestTimeout:        time.Duration(option.RequestTimeout) * time.Millisecond,
+			MaxUdpRelayPacketSize: option.MaxUdpRelayPacketSize,
+			FastOpen:              option.FastOpen,
+			MaxOpenStreams:        clientMaxOpenStreams,
+			CWND:                  option.CWND,
+		}
+
+		t.client = tuic.NewPoolClientV4(clientOption)
+	} else {
+		maxUdpRelayPacketSize := option.MaxUdpRelayPacketSize
+		if maxUdpRelayPacketSize > tuic.MaxFragSizeV5 {
+			maxUdpRelayPacketSize = tuic.MaxFragSizeV5
+		}
+		clientOption := &tuic.ClientOptionV5{
+			TlsConfig:             tlsConfig,
+			QuicConfig:            quicConfig,
+			Uuid:                  uuid.FromStringOrNil(option.UUID),
+			Password:              option.Password,
+			UdpRelayMode:          udpRelayMode,
+			CongestionController:  option.CongestionController,
+			ReduceRtt:             option.ReduceRtt,
+			MaxUdpRelayPacketSize: maxUdpRelayPacketSize,
+			MaxOpenStreams:        clientMaxOpenStreams,
+			CWND:                  option.CWND,
+		}
+
+		t.client = tuic.NewPoolClientV5(clientOption)
+	}
+
+	return t, nil
+}

adapter/outbound/util.go

@@ -0,0 +1,163 @@
+package outbound
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/netip"
+	"regexp"
+	"strconv"
+	"sync"
+
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+var (
+	globalClientSessionCache tls.ClientSessionCache
+	once                     sync.Once
+)
+
+func getClientSessionCache() tls.ClientSessionCache {
+	once.Do(func() {
+		globalClientSessionCache = tls.NewLRUClientSessionCache(128)
+	})
+	return globalClientSessionCache
+}
+
+func serializesSocksAddr(metadata *C.Metadata) []byte {
+	var buf [][]byte
+	addrType := metadata.AddrType()
+	aType := uint8(addrType)
+	p := uint(metadata.DstPort)
+	port := []byte{uint8(p >> 8), uint8(p & 0xff)}
+	switch addrType {
+	case socks5.AtypDomainName:
+		lenM := uint8(len(metadata.Host))
+		host := []byte(metadata.Host)
+		buf = [][]byte{{aType, lenM}, host, port}
+	case socks5.AtypIPv4:
+		host := metadata.DstIP.AsSlice()
+		buf = [][]byte{{aType}, host, port}
+	case socks5.AtypIPv6:
+		host := metadata.DstIP.AsSlice()
+		buf = [][]byte{{aType}, host, port}
+	}
+	return bytes.Join(buf, nil)
+}
+
+func resolveUDPAddr(ctx context.Context, network, address string) (*net.UDPAddr, error) {
+	host, port, err := net.SplitHostPort(address)
+	if err != nil {
+		return nil, err
+	}
+
+	ip, err := resolver.ResolveProxyServerHost(ctx, host)
+	if err != nil {
+		return nil, err
+	}
+	return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
+}
+
+func resolveUDPAddrWithPrefer(ctx context.Context, network, address string, prefer C.DNSPrefer) (*net.UDPAddr, error) {
+	host, port, err := net.SplitHostPort(address)
+	if err != nil {
+		return nil, err
+	}
+	var ip netip.Addr
+	var fallback netip.Addr
+	switch prefer {
+	case C.IPv4Only:
+		ip, err = resolver.ResolveIPv4ProxyServerHost(ctx, host)
+	case C.IPv6Only:
+		ip, err = resolver.ResolveIPv6ProxyServerHost(ctx, host)
+	case C.IPv6Prefer:
+		var ips []netip.Addr
+		ips, err = resolver.LookupIPProxyServerHost(ctx, host)
+		if err == nil {
+			for _, addr := range ips {
+				if addr.Is6() {
+					ip = addr
+					break
+				} else {
+					if !fallback.IsValid() {
+						fallback = addr
+					}
+				}
+			}
+		}
+	default:
+		// C.IPv4Prefer, C.DualStack and other
+		var ips []netip.Addr
+		ips, err = resolver.LookupIPProxyServerHost(ctx, host)
+		if err == nil {
+			for _, addr := range ips {
+				if addr.Is4() {
+					ip = addr
+					break
+				} else {
+					if !fallback.IsValid() {
+						fallback = addr
+					}
+				}
+			}
+
+		}
+	}
+
+	if !ip.IsValid() && fallback.IsValid() {
+		ip = fallback
+	}
+
+	if err != nil {
+		return nil, err
+	}
+	return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
+}
+
+func safeConnClose(c net.Conn, err error) {
+	if err != nil && c != nil {
+		_ = c.Close()
+	}
+}
+
+var rateStringRegexp = regexp.MustCompile(`^(\d+)\s*([KMGT]?)([Bb])ps$`)
+
+func StringToBps(s string) uint64 {
+	if s == "" {
+		return 0
+	}
+
+	// when have not unit, use Mbps
+	if v, err := strconv.Atoi(s); err == nil {
+		return StringToBps(fmt.Sprintf("%d Mbps", v))
+	}
+
+	m := rateStringRegexp.FindStringSubmatch(s)
+	if m == nil {
+		return 0
+	}
+	var n uint64
+	switch m[2] {
+	case "K":
+		n = 1 << 10
+	case "M":
+		n = 1 << 20
+	case "G":
+		n = 1 << 30
+	case "T":
+		n = 1 << 40
+	default:
+		n = 1
+	}
+	v, _ := strconv.ParseUint(m[1], 10, 64)
+	n = v * n
+	if m[3] == "b" {
+		// Bits, need to convert to bytes
+		n = n >> 3
+	}
+	return n
+}

adapter/outbound/vless.go

@@ -0,0 +1,609 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strconv"
+	"sync"
+
+	"github.com/Dreamacro/clash/common/convert"
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	tlsC "github.com/Dreamacro/clash/component/tls"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/socks5"
+	"github.com/Dreamacro/clash/transport/vless"
+	"github.com/Dreamacro/clash/transport/vmess"
+
+	vmessSing "github.com/metacubex/sing-vmess"
+	"github.com/metacubex/sing-vmess/packetaddr"
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+const (
+	// max packet length
+	maxLength = 1024 << 3
+)
+
+type Vless struct {
+	*Base
+	client *vless.Client
+	option *VlessOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *gun.TransportWrap
+
+	realityConfig *tlsC.RealityConfig
+}
+
+type VlessOption struct {
+	BasicOption
+	Name              string            `proxy:"name"`
+	Server            string            `proxy:"server"`
+	Port              int               `proxy:"port"`
+	UUID              string            `proxy:"uuid"`
+	Flow              string            `proxy:"flow,omitempty"`
+	TLS               bool              `proxy:"tls,omitempty"`
+	ALPN              []string          `proxy:"alpn,omitempty"`
+	UDP               bool              `proxy:"udp,omitempty"`
+	PacketAddr        bool              `proxy:"packet-addr,omitempty"`
+	XUDP              bool              `proxy:"xudp,omitempty"`
+	PacketEncoding    string            `proxy:"packet-encoding,omitempty"`
+	Network           string            `proxy:"network,omitempty"`
+	RealityOpts       RealityOptions    `proxy:"reality-opts,omitempty"`
+	HTTPOpts          HTTPOptions       `proxy:"http-opts,omitempty"`
+	HTTP2Opts         HTTP2Options      `proxy:"h2-opts,omitempty"`
+	GrpcOpts          GrpcOptions       `proxy:"grpc-opts,omitempty"`
+	WSOpts            WSOptions         `proxy:"ws-opts,omitempty"`
+	WSPath            string            `proxy:"ws-path,omitempty"`
+	WSHeaders         map[string]string `proxy:"ws-headers,omitempty"`
+	SkipCertVerify    bool              `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint       string            `proxy:"fingerprint,omitempty"`
+	ServerName        string            `proxy:"servername,omitempty"`
+	ClientFingerprint string            `proxy:"client-fingerprint,omitempty"`
+}
+
+func (v *Vless) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+
+	if tlsC.HaveGlobalFingerprint() && len(v.option.ClientFingerprint) == 0 {
+		v.option.ClientFingerprint = tlsC.GetGlobalFingerprint()
+	}
+
+	switch v.option.Network {
+	case "ws":
+		host, port, _ := net.SplitHostPort(v.addr)
+		wsOpts := &vmess.WebsocketConfig{
+			Host:                host,
+			Port:                port,
+			Path:                v.option.WSOpts.Path,
+			MaxEarlyData:        v.option.WSOpts.MaxEarlyData,
+			EarlyDataHeaderName: v.option.WSOpts.EarlyDataHeaderName,
+			ClientFingerprint:   v.option.ClientFingerprint,
+			Headers:             http.Header{},
+		}
+
+		if len(v.option.WSOpts.Headers) != 0 {
+			for key, value := range v.option.WSOpts.Headers {
+				wsOpts.Headers.Add(key, value)
+			}
+		}
+		if v.option.TLS {
+			wsOpts.TLS = true
+			tlsConfig := &tls.Config{
+				MinVersion:         tls.VersionTLS12,
+				ServerName:         host,
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				NextProtos:         []string{"http/1.1"},
+			}
+
+			wsOpts.TLSConfig, err = ca.GetSpecifiedFingerprintTLSConfig(tlsConfig, v.option.Fingerprint)
+			if err != nil {
+				return nil, err
+			}
+
+			if v.option.ServerName != "" {
+				wsOpts.TLSConfig.ServerName = v.option.ServerName
+			} else if host := wsOpts.Headers.Get("Host"); host != "" {
+				wsOpts.TLSConfig.ServerName = host
+			}
+		} else {
+			if host := wsOpts.Headers.Get("Host"); host == "" {
+				wsOpts.Headers.Set("Host", convert.RandHost())
+				convert.SetUserAgent(wsOpts.Headers)
+			}
+		}
+		c, err = vmess.StreamWebsocketConn(ctx, c, wsOpts)
+	case "http":
+		// readability first, so just copy default TLS logic
+		c, err = v.streamTLSConn(ctx, c, false)
+		if err != nil {
+			return nil, err
+		}
+
+		host, _, _ := net.SplitHostPort(v.addr)
+		httpOpts := &vmess.HTTPConfig{
+			Host:    host,
+			Method:  v.option.HTTPOpts.Method,
+			Path:    v.option.HTTPOpts.Path,
+			Headers: v.option.HTTPOpts.Headers,
+		}
+
+		c = vmess.StreamHTTPConn(c, httpOpts)
+	case "h2":
+		c, err = v.streamTLSConn(ctx, c, true)
+		if err != nil {
+			return nil, err
+		}
+
+		h2Opts := &vmess.H2Config{
+			Hosts: v.option.HTTP2Opts.Host,
+			Path:  v.option.HTTP2Opts.Path,
+		}
+
+		c, err = vmess.StreamH2Conn(c, h2Opts)
+	case "grpc":
+		c, err = gun.StreamGunWithConn(c, v.gunTLSConfig, v.gunConfig, v.realityConfig)
+	default:
+		// default tcp network
+		// handle TLS
+		c, err = v.streamTLSConn(ctx, c, false)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return v.streamConn(c, metadata)
+}
+
+func (v *Vless) streamConn(c net.Conn, metadata *C.Metadata) (conn net.Conn, err error) {
+	if metadata.NetWork == C.UDP {
+		if v.option.PacketAddr {
+			metadata = &C.Metadata{
+				NetWork: C.UDP,
+				Host:    packetaddr.SeqPacketMagicAddress,
+				DstPort: 443,
+			}
+		} else {
+			metadata = &C.Metadata{ // a clear metadata only contains ip
+				NetWork: C.UDP,
+				DstIP:   metadata.DstIP,
+				DstPort: metadata.DstPort,
+			}
+		}
+		conn, err = v.client.StreamConn(c, parseVlessAddr(metadata, v.option.XUDP))
+		if v.option.PacketAddr {
+			conn = packetaddr.NewBindConn(conn)
+		}
+	} else {
+		conn, err = v.client.StreamConn(c, parseVlessAddr(metadata, false))
+	}
+	if err != nil {
+		conn = nil
+	}
+	return
+}
+
+func (v *Vless) streamTLSConn(ctx context.Context, conn net.Conn, isH2 bool) (net.Conn, error) {
+	if v.option.TLS {
+		host, _, _ := net.SplitHostPort(v.addr)
+
+		tlsOpts := vmess.TLSConfig{
+			Host:              host,
+			SkipCertVerify:    v.option.SkipCertVerify,
+			FingerPrint:       v.option.Fingerprint,
+			ClientFingerprint: v.option.ClientFingerprint,
+			Reality:           v.realityConfig,
+			NextProtos:        v.option.ALPN,
+		}
+
+		if isH2 {
+			tlsOpts.NextProtos = []string{"h2"}
+		}
+
+		if v.option.ServerName != "" {
+			tlsOpts.Host = v.option.ServerName
+		}
+
+		return vmess.StreamTLSConn(ctx, conn, &tlsOpts)
+	}
+
+	return conn, nil
+}
+
+// DialContext implements C.ProxyAdapter
+func (v *Vless) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	// gun transport
+	if v.transport != nil && len(opts) == 0 {
+		c, err := gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer func(c net.Conn) {
+			safeConnClose(c, err)
+		}(c)
+
+		c, err = v.client.StreamConn(c, parseVlessAddr(metadata, v.option.XUDP))
+		if err != nil {
+			return nil, err
+		}
+
+		return NewConn(c, v), nil
+	}
+	return v.DialContextWithDialer(ctx, dialer.NewDialer(v.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (v *Vless) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(v.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(v.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", v.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	N.TCPKeepAlive(c)
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = v.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	return NewConn(c, v), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (v *Vless) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	// vless use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+	var c net.Conn
+	// gun transport
+	if v.transport != nil && len(opts) == 0 {
+		c, err = gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer func(c net.Conn) {
+			safeConnClose(c, err)
+		}(c)
+
+		c, err = v.streamConn(c, metadata)
+		if err != nil {
+			return nil, fmt.Errorf("new vless client error: %v", err)
+		}
+
+		return v.ListenPacketOnStreamConn(ctx, c, metadata)
+	}
+	return v.ListenPacketWithDialer(ctx, dialer.NewDialer(v.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (v *Vless) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if len(v.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(v.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// vless use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", v.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	N.TCPKeepAlive(c)
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = v.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, fmt.Errorf("new vless client error: %v", err)
+	}
+
+	return v.ListenPacketOnStreamConn(ctx, c, metadata)
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (v *Vless) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+// ListenPacketOnStreamConn implements C.ProxyAdapter
+func (v *Vless) ListenPacketOnStreamConn(ctx context.Context, c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	// vless use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+
+	if v.option.XUDP {
+		var globalID [8]byte
+		if metadata.SourceValid() {
+			globalID = utils.GlobalID(metadata.SourceAddress())
+		}
+		return newPacketConn(N.NewThreadSafePacketConn(
+			vmessSing.NewXUDPConn(c,
+				globalID,
+				M.SocksaddrFromNet(metadata.UDPAddr())),
+		), v), nil
+	} else if v.option.PacketAddr {
+		return newPacketConn(N.NewThreadSafePacketConn(
+			packetaddr.NewConn(&vlessPacketConn{
+				Conn: c, rAddr: metadata.UDPAddr(),
+			}, M.SocksaddrFromNet(metadata.UDPAddr())),
+		), v), nil
+	}
+	return newPacketConn(&vlessPacketConn{Conn: c, rAddr: metadata.UDPAddr()}, v), nil
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (v *Vless) SupportUOT() bool {
+	return true
+}
+
+func parseVlessAddr(metadata *C.Metadata, xudp bool) *vless.DstAddr {
+	var addrType byte
+	var addr []byte
+	switch metadata.AddrType() {
+	case socks5.AtypIPv4:
+		addrType = vless.AtypIPv4
+		addr = make([]byte, net.IPv4len)
+		copy(addr[:], metadata.DstIP.AsSlice())
+	case socks5.AtypIPv6:
+		addrType = vless.AtypIPv6
+		addr = make([]byte, net.IPv6len)
+		copy(addr[:], metadata.DstIP.AsSlice())
+	case socks5.AtypDomainName:
+		addrType = vless.AtypDomainName
+		addr = make([]byte, len(metadata.Host)+1)
+		addr[0] = byte(len(metadata.Host))
+		copy(addr[1:], metadata.Host)
+	}
+
+	return &vless.DstAddr{
+		UDP:      metadata.NetWork == C.UDP,
+		AddrType: addrType,
+		Addr:     addr,
+		Port:     metadata.DstPort,
+		Mux:      metadata.NetWork == C.UDP && xudp,
+	}
+}
+
+type vlessPacketConn struct {
+	net.Conn
+	rAddr  net.Addr
+	remain int
+	mux    sync.Mutex
+	cache  [2]byte
+}
+
+func (c *vlessPacketConn) writePacket(payload []byte) (int, error) {
+	binary.BigEndian.PutUint16(c.cache[:], uint16(len(payload)))
+
+	if _, err := c.Conn.Write(c.cache[:]); err != nil {
+		return 0, err
+	}
+
+	return c.Conn.Write(payload)
+}
+
+func (c *vlessPacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
+	total := len(b)
+	if total == 0 {
+		return 0, nil
+	}
+
+	if total <= maxLength {
+		return c.writePacket(b)
+	}
+
+	offset := 0
+
+	for offset < total {
+		cursor := offset + maxLength
+		if cursor > total {
+			cursor = total
+		}
+
+		n, err := c.writePacket(b[offset:cursor])
+		if err != nil {
+			return offset + n, err
+		}
+
+		offset = cursor
+		if offset == total {
+			break
+		}
+	}
+
+	return total, nil
+}
+
+func (c *vlessPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
+	c.mux.Lock()
+	defer c.mux.Unlock()
+
+	if c.remain > 0 {
+		length := len(b)
+		if c.remain < length {
+			length = c.remain
+		}
+
+		n, err := c.Conn.Read(b[:length])
+		if err != nil {
+			return 0, c.rAddr, err
+		}
+
+		c.remain -= n
+		return n, c.rAddr, nil
+	}
+
+	if _, err := c.Conn.Read(b[:2]); err != nil {
+		return 0, c.rAddr, err
+	}
+
+	total := int(binary.BigEndian.Uint16(b[:2]))
+	if total == 0 {
+		return 0, c.rAddr, nil
+	}
+
+	length := len(b)
+	if length > total {
+		length = total
+	}
+
+	if _, err := io.ReadFull(c.Conn, b[:length]); err != nil {
+		return 0, c.rAddr, errors.New("read packet error")
+	}
+
+	c.remain = total - length
+
+	return length, c.rAddr, nil
+}
+
+func NewVless(option VlessOption) (*Vless, error) {
+	var addons *vless.Addons
+	if option.Network != "ws" && len(option.Flow) >= 16 {
+		option.Flow = option.Flow[:16]
+		switch option.Flow {
+		case vless.XRV:
+			log.Warnln("To use %s, ensure your server is upgrade to Xray-core v1.8.0+", vless.XRV)
+			addons = &vless.Addons{
+				Flow: option.Flow,
+			}
+		case vless.XRO, vless.XRD, vless.XRS:
+			log.Fatalln("Legacy XTLS protocol %s is deprecated and no longer supported", option.Flow)
+		default:
+			return nil, fmt.Errorf("unsupported xtls flow type: %s", option.Flow)
+		}
+	}
+
+	switch option.PacketEncoding {
+	case "packetaddr", "packet":
+		option.PacketAddr = true
+		option.XUDP = false
+	default: // https://github.com/XTLS/Xray-core/pull/1567#issuecomment-1407305458
+		if !option.PacketAddr {
+			option.XUDP = true
+		}
+	}
+	if option.XUDP {
+		option.PacketAddr = false
+	}
+
+	client, err := vless.NewClient(option.UUID, addons)
+	if err != nil {
+		return nil, err
+	}
+
+	v := &Vless{
+		Base: &Base{
+			name:   option.Name,
+			addr:   net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:     C.Vless,
+			udp:    option.UDP,
+			xudp:   option.XUDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		client: client,
+		option: &option,
+	}
+
+	v.realityConfig, err = v.option.RealityOpts.Parse()
+	if err != nil {
+		return nil, err
+	}
+
+	switch option.Network {
+	case "h2":
+		if len(option.HTTP2Opts.Host) == 0 {
+			option.HTTP2Opts.Host = append(option.HTTP2Opts.Host, "www.example.com")
+		}
+	case "grpc":
+		dialFn := func(network, addr string) (net.Conn, error) {
+			var err error
+			var cDialer C.Dialer = dialer.NewDialer(v.Base.DialOptions()...)
+			if len(v.option.DialerProxy) > 0 {
+				cDialer, err = proxydialer.NewByName(v.option.DialerProxy, cDialer)
+				if err != nil {
+					return nil, err
+				}
+			}
+			c, err := cDialer.DialContext(context.Background(), "tcp", v.addr)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+			}
+			N.TCPKeepAlive(c)
+			return c, nil
+		}
+
+		gunConfig := &gun.Config{
+			ServiceName:       v.option.GrpcOpts.GrpcServiceName,
+			Host:              v.option.ServerName,
+			ClientFingerprint: v.option.ClientFingerprint,
+		}
+		if option.ServerName == "" {
+			gunConfig.Host = v.addr
+		}
+		var tlsConfig *tls.Config
+		if option.TLS {
+			tlsConfig = ca.GetGlobalTLSConfig(&tls.Config{
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				ServerName:         v.option.ServerName,
+			})
+			if option.ServerName == "" {
+				host, _, _ := net.SplitHostPort(v.addr)
+				tlsConfig.ServerName = host
+			}
+		}
+
+		v.gunTLSConfig = tlsConfig
+		v.gunConfig = gunConfig
+
+		v.transport = gun.NewHTTP2Client(dialFn, tlsConfig, v.option.ClientFingerprint, v.realityConfig)
+	}
+
+	return v, nil
+}

adapter/outbound/vmess.go

@@ -0,0 +1,530 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/ca"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	tlsC "github.com/Dreamacro/clash/component/tls"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/ntp"
+	"github.com/Dreamacro/clash/transport/gun"
+	clashVMess "github.com/Dreamacro/clash/transport/vmess"
+
+	vmess "github.com/metacubex/sing-vmess"
+	"github.com/metacubex/sing-vmess/packetaddr"
+	M "github.com/sagernet/sing/common/metadata"
+)
+
+var ErrUDPRemoteAddrMismatch = errors.New("udp packet dropped due to mismatched remote address")
+
+type Vmess struct {
+	*Base
+	client *vmess.Client
+	option *VmessOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *gun.TransportWrap
+
+	realityConfig *tlsC.RealityConfig
+}
+
+type VmessOption struct {
+	BasicOption
+	Name                string         `proxy:"name"`
+	Server              string         `proxy:"server"`
+	Port                int            `proxy:"port"`
+	UUID                string         `proxy:"uuid"`
+	AlterID             int            `proxy:"alterId"`
+	Cipher              string         `proxy:"cipher"`
+	UDP                 bool           `proxy:"udp,omitempty"`
+	Network             string         `proxy:"network,omitempty"`
+	TLS                 bool           `proxy:"tls,omitempty"`
+	ALPN                []string       `proxy:"alpn,omitempty"`
+	SkipCertVerify      bool           `proxy:"skip-cert-verify,omitempty"`
+	Fingerprint         string         `proxy:"fingerprint,omitempty"`
+	ServerName          string         `proxy:"servername,omitempty"`
+	RealityOpts         RealityOptions `proxy:"reality-opts,omitempty"`
+	HTTPOpts            HTTPOptions    `proxy:"http-opts,omitempty"`
+	HTTP2Opts           HTTP2Options   `proxy:"h2-opts,omitempty"`
+	GrpcOpts            GrpcOptions    `proxy:"grpc-opts,omitempty"`
+	WSOpts              WSOptions      `proxy:"ws-opts,omitempty"`
+	PacketAddr          bool           `proxy:"packet-addr,omitempty"`
+	XUDP                bool           `proxy:"xudp,omitempty"`
+	PacketEncoding      string         `proxy:"packet-encoding,omitempty"`
+	GlobalPadding       bool           `proxy:"global-padding,omitempty"`
+	AuthenticatedLength bool           `proxy:"authenticated-length,omitempty"`
+	ClientFingerprint   string         `proxy:"client-fingerprint,omitempty"`
+}
+
+type HTTPOptions struct {
+	Method  string              `proxy:"method,omitempty"`
+	Path    []string            `proxy:"path,omitempty"`
+	Headers map[string][]string `proxy:"headers,omitempty"`
+}
+
+type HTTP2Options struct {
+	Host []string `proxy:"host,omitempty"`
+	Path string   `proxy:"path,omitempty"`
+}
+
+type GrpcOptions struct {
+	GrpcServiceName string `proxy:"grpc-service-name,omitempty"`
+}
+
+type WSOptions struct {
+	Path                string            `proxy:"path,omitempty"`
+	Headers             map[string]string `proxy:"headers,omitempty"`
+	MaxEarlyData        int               `proxy:"max-early-data,omitempty"`
+	EarlyDataHeaderName string            `proxy:"early-data-header-name,omitempty"`
+}
+
+// StreamConnContext implements C.ProxyAdapter
+func (v *Vmess) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+
+	if tlsC.HaveGlobalFingerprint() && (len(v.option.ClientFingerprint) == 0) {
+		v.option.ClientFingerprint = tlsC.GetGlobalFingerprint()
+	}
+
+	switch v.option.Network {
+	case "ws":
+		host, port, _ := net.SplitHostPort(v.addr)
+		wsOpts := &clashVMess.WebsocketConfig{
+			Host:                host,
+			Port:                port,
+			Path:                v.option.WSOpts.Path,
+			MaxEarlyData:        v.option.WSOpts.MaxEarlyData,
+			EarlyDataHeaderName: v.option.WSOpts.EarlyDataHeaderName,
+			ClientFingerprint:   v.option.ClientFingerprint,
+			Headers:             http.Header{},
+		}
+
+		if len(v.option.WSOpts.Headers) != 0 {
+			for key, value := range v.option.WSOpts.Headers {
+				wsOpts.Headers.Add(key, value)
+			}
+		}
+
+		if v.option.TLS {
+			wsOpts.TLS = true
+			tlsConfig := &tls.Config{
+				ServerName:         host,
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				NextProtos:         []string{"http/1.1"},
+			}
+
+			wsOpts.TLSConfig, err = ca.GetSpecifiedFingerprintTLSConfig(tlsConfig, v.option.Fingerprint)
+			if err != nil {
+				return nil, err
+			}
+
+			if v.option.ServerName != "" {
+				wsOpts.TLSConfig.ServerName = v.option.ServerName
+			} else if host := wsOpts.Headers.Get("Host"); host != "" {
+				wsOpts.TLSConfig.ServerName = host
+			}
+		}
+		c, err = clashVMess.StreamWebsocketConn(ctx, c, wsOpts)
+	case "http":
+		// readability first, so just copy default TLS logic
+		if v.option.TLS {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsOpts := &clashVMess.TLSConfig{
+				Host:              host,
+				SkipCertVerify:    v.option.SkipCertVerify,
+				ClientFingerprint: v.option.ClientFingerprint,
+				Reality:           v.realityConfig,
+				NextProtos:        v.option.ALPN,
+			}
+
+			if v.option.ServerName != "" {
+				tlsOpts.Host = v.option.ServerName
+			}
+			c, err = clashVMess.StreamTLSConn(ctx, c, tlsOpts)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		host, _, _ := net.SplitHostPort(v.addr)
+		httpOpts := &clashVMess.HTTPConfig{
+			Host:    host,
+			Method:  v.option.HTTPOpts.Method,
+			Path:    v.option.HTTPOpts.Path,
+			Headers: v.option.HTTPOpts.Headers,
+		}
+
+		c = clashVMess.StreamHTTPConn(c, httpOpts)
+	case "h2":
+		host, _, _ := net.SplitHostPort(v.addr)
+		tlsOpts := clashVMess.TLSConfig{
+			Host:              host,
+			SkipCertVerify:    v.option.SkipCertVerify,
+			NextProtos:        []string{"h2"},
+			ClientFingerprint: v.option.ClientFingerprint,
+			Reality:           v.realityConfig,
+		}
+
+		if v.option.ServerName != "" {
+			tlsOpts.Host = v.option.ServerName
+		}
+
+		c, err = clashVMess.StreamTLSConn(ctx, c, &tlsOpts)
+		if err != nil {
+			return nil, err
+		}
+
+		h2Opts := &clashVMess.H2Config{
+			Hosts: v.option.HTTP2Opts.Host,
+			Path:  v.option.HTTP2Opts.Path,
+		}
+
+		c, err = clashVMess.StreamH2Conn(c, h2Opts)
+	case "grpc":
+		c, err = gun.StreamGunWithConn(c, v.gunTLSConfig, v.gunConfig, v.realityConfig)
+	default:
+		// handle TLS
+		if v.option.TLS {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsOpts := &clashVMess.TLSConfig{
+				Host:              host,
+				SkipCertVerify:    v.option.SkipCertVerify,
+				ClientFingerprint: v.option.ClientFingerprint,
+				Reality:           v.realityConfig,
+				NextProtos:        v.option.ALPN,
+			}
+
+			if v.option.ServerName != "" {
+				tlsOpts.Host = v.option.ServerName
+			}
+
+			c, err = clashVMess.StreamTLSConn(ctx, c, tlsOpts)
+		}
+	}
+
+	if err != nil {
+		return nil, err
+	}
+	return v.streamConn(c, metadata)
+}
+
+func (v *Vmess) streamConn(c net.Conn, metadata *C.Metadata) (conn net.Conn, err error) {
+	if metadata.NetWork == C.UDP {
+		if v.option.XUDP {
+			var globalID [8]byte
+			if metadata.SourceValid() {
+				globalID = utils.GlobalID(metadata.SourceAddress())
+			}
+			if N.NeedHandshake(c) {
+				conn = v.client.DialEarlyXUDPPacketConn(c,
+					globalID,
+					M.SocksaddrFromNet(metadata.UDPAddr()))
+			} else {
+				conn, err = v.client.DialXUDPPacketConn(c,
+					globalID,
+					M.SocksaddrFromNet(metadata.UDPAddr()))
+			}
+		} else if v.option.PacketAddr {
+			if N.NeedHandshake(c) {
+				conn = v.client.DialEarlyPacketConn(c,
+					M.ParseSocksaddrHostPort(packetaddr.SeqPacketMagicAddress, 443))
+			} else {
+				conn, err = v.client.DialPacketConn(c,
+					M.ParseSocksaddrHostPort(packetaddr.SeqPacketMagicAddress, 443))
+			}
+			conn = packetaddr.NewBindConn(conn)
+		} else {
+			if N.NeedHandshake(c) {
+				conn = v.client.DialEarlyPacketConn(c,
+					M.SocksaddrFromNet(metadata.UDPAddr()))
+			} else {
+				conn, err = v.client.DialPacketConn(c,
+					M.SocksaddrFromNet(metadata.UDPAddr()))
+			}
+		}
+	} else {
+		if N.NeedHandshake(c) {
+			conn = v.client.DialEarlyConn(c,
+				M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+		} else {
+			conn, err = v.client.DialConn(c,
+				M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+		}
+	}
+	if err != nil {
+		conn = nil
+	}
+	return
+}
+
+// DialContext implements C.ProxyAdapter
+func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	// gun transport
+	if v.transport != nil && len(opts) == 0 {
+		c, err := gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer func(c net.Conn) {
+			safeConnClose(c, err)
+		}(c)
+
+		c, err = v.client.DialConn(c, M.ParseSocksaddrHostPort(metadata.String(), metadata.DstPort))
+		if err != nil {
+			return nil, err
+		}
+
+		return NewConn(c, v), nil
+	}
+	return v.DialContextWithDialer(ctx, dialer.NewDialer(v.Base.DialOptions(opts...)...), metadata)
+}
+
+// DialContextWithDialer implements C.ProxyAdapter
+func (v *Vmess) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
+	if len(v.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(v.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+	c, err := dialer.DialContext(ctx, "tcp", v.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	N.TCPKeepAlive(c)
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = v.StreamConnContext(ctx, c, metadata)
+	return NewConn(c, v), err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (v *Vmess) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	// vmess use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+	var c net.Conn
+	// gun transport
+	if v.transport != nil && len(opts) == 0 {
+		c, err = gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer func(c net.Conn) {
+			safeConnClose(c, err)
+		}(c)
+
+		c, err = v.streamConn(c, metadata)
+		if err != nil {
+			return nil, fmt.Errorf("new vmess client error: %v", err)
+		}
+		return v.ListenPacketOnStreamConn(ctx, c, metadata)
+	}
+	return v.ListenPacketWithDialer(ctx, dialer.NewDialer(v.Base.DialOptions(opts...)...), metadata)
+}
+
+// ListenPacketWithDialer implements C.ProxyAdapter
+func (v *Vmess) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	if len(v.option.DialerProxy) > 0 {
+		dialer, err = proxydialer.NewByName(v.option.DialerProxy, dialer)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// vmess use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", v.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	N.TCPKeepAlive(c)
+	defer func(c net.Conn) {
+		safeConnClose(c, err)
+	}(c)
+
+	c, err = v.StreamConnContext(ctx, c, metadata)
+	if err != nil {
+		return nil, fmt.Errorf("new vmess client error: %v", err)
+	}
+	return v.ListenPacketOnStreamConn(ctx, c, metadata)
+}
+
+// SupportWithDialer implements C.ProxyAdapter
+func (v *Vmess) SupportWithDialer() C.NetWork {
+	return C.ALLNet
+}
+
+// ListenPacketOnStreamConn implements C.ProxyAdapter
+func (v *Vmess) ListenPacketOnStreamConn(ctx context.Context, c net.Conn, metadata *C.Metadata) (_ C.PacketConn, err error) {
+	// vmess use stream-oriented udp with a special address, so we need a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(ctx, metadata.Host)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+
+	if pc, ok := c.(net.PacketConn); ok {
+		return newPacketConn(N.NewThreadSafePacketConn(pc), v), nil
+	}
+	return newPacketConn(&vmessPacketConn{Conn: c, rAddr: metadata.UDPAddr()}, v), nil
+}
+
+// SupportUOT implements C.ProxyAdapter
+func (v *Vmess) SupportUOT() bool {
+	return true
+}
+
+func NewVmess(option VmessOption) (*Vmess, error) {
+	security := strings.ToLower(option.Cipher)
+	var options []vmess.ClientOption
+	if option.GlobalPadding {
+		options = append(options, vmess.ClientWithGlobalPadding())
+	}
+	if option.AuthenticatedLength {
+		options = append(options, vmess.ClientWithAuthenticatedLength())
+	}
+	options = append(options, vmess.ClientWithTimeFunc(ntp.Now))
+	client, err := vmess.NewClient(option.UUID, security, option.AlterID, options...)
+	if err != nil {
+		return nil, err
+	}
+
+	switch option.PacketEncoding {
+	case "packetaddr", "packet":
+		option.PacketAddr = true
+	case "xudp":
+		option.XUDP = true
+	}
+	if option.XUDP {
+		option.PacketAddr = false
+	}
+
+	v := &Vmess{
+		Base: &Base{
+			name:   option.Name,
+			addr:   net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:     C.Vmess,
+			udp:    option.UDP,
+			xudp:   option.XUDP,
+			tfo:    option.TFO,
+			mpTcp:  option.MPTCP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		client: client,
+		option: &option,
+	}
+
+	switch option.Network {
+	case "h2":
+		if len(option.HTTP2Opts.Host) == 0 {
+			option.HTTP2Opts.Host = append(option.HTTP2Opts.Host, "www.example.com")
+		}
+	case "grpc":
+		dialFn := func(network, addr string) (net.Conn, error) {
+			var err error
+			var cDialer C.Dialer = dialer.NewDialer(v.Base.DialOptions()...)
+			if len(v.option.DialerProxy) > 0 {
+				cDialer, err = proxydialer.NewByName(v.option.DialerProxy, cDialer)
+				if err != nil {
+					return nil, err
+				}
+			}
+			c, err := cDialer.DialContext(context.Background(), "tcp", v.addr)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+			}
+			N.TCPKeepAlive(c)
+			return c, nil
+		}
+
+		gunConfig := &gun.Config{
+			ServiceName:       v.option.GrpcOpts.GrpcServiceName,
+			Host:              v.option.ServerName,
+			ClientFingerprint: v.option.ClientFingerprint,
+		}
+		if option.ServerName == "" {
+			gunConfig.Host = v.addr
+		}
+		var tlsConfig *tls.Config
+		if option.TLS {
+			tlsConfig = ca.GetGlobalTLSConfig(&tls.Config{
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				ServerName:         v.option.ServerName,
+			})
+			if option.ServerName == "" {
+				host, _, _ := net.SplitHostPort(v.addr)
+				tlsConfig.ServerName = host
+			}
+		}
+
+		v.gunTLSConfig = tlsConfig
+		v.gunConfig = gunConfig
+
+		v.transport = gun.NewHTTP2Client(dialFn, tlsConfig, v.option.ClientFingerprint, v.realityConfig)
+	}
+
+	v.realityConfig, err = v.option.RealityOpts.Parse()
+	if err != nil {
+		return nil, err
+	}
+
+	return v, nil
+}
+
+type vmessPacketConn struct {
+	net.Conn
+	rAddr  net.Addr
+	access sync.Mutex
+}
+
+// WriteTo implments C.PacketConn.WriteTo
+// Since VMess doesn't support full cone NAT by design, we verify if addr matches uc.rAddr, and drop the packet if not.
+func (uc *vmessPacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
+	allowedAddr := uc.rAddr
+	destAddr := addr
+	if allowedAddr.String() != destAddr.String() {
+		return 0, ErrUDPRemoteAddrMismatch
+	}
+	uc.access.Lock()
+	defer uc.access.Unlock()
+	return uc.Conn.Write(b)
+}
+
+func (uc *vmessPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
+	n, err := uc.Conn.Read(b)
+	return n, uc.rAddr, err
+}

adapter/outbound/wireguard.go

@@ -0,0 +1,531 @@
+package outbound
+
+import (
+	"context"
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"net"
+	"net/netip"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+
+	CN "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/dns"
+	"github.com/Dreamacro/clash/log"
+
+	wireguard "github.com/metacubex/sing-wireguard"
+
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/debug"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/wireguard-go/device"
+)
+
+type WireGuard struct {
+	*Base
+	bind      *wireguard.ClientBind
+	device    *device.Device
+	tunDevice wireguard.Device
+	dialer    proxydialer.SingDialer
+	startOnce sync.Once
+	startErr  error
+	resolver  *dns.Resolver
+	refP      *refProxyAdapter
+}
+
+type WireGuardOption struct {
+	BasicOption
+	WireGuardPeerOption
+	Name                string `proxy:"name"`
+	PrivateKey          string `proxy:"private-key"`
+	Workers             int    `proxy:"workers,omitempty"`
+	MTU                 int    `proxy:"mtu,omitempty"`
+	UDP                 bool   `proxy:"udp,omitempty"`
+	PersistentKeepalive int    `proxy:"persistent-keepalive,omitempty"`
+
+	Peers []WireGuardPeerOption `proxy:"peers,omitempty"`
+
+	RemoteDnsResolve bool     `proxy:"remote-dns-resolve,omitempty"`
+	Dns              []string `proxy:"dns,omitempty"`
+}
+
+type WireGuardPeerOption struct {
+	Server       string   `proxy:"server"`
+	Port         int      `proxy:"port"`
+	Ip           string   `proxy:"ip,omitempty"`
+	Ipv6         string   `proxy:"ipv6,omitempty"`
+	PublicKey    string   `proxy:"public-key,omitempty"`
+	PreSharedKey string   `proxy:"pre-shared-key,omitempty"`
+	Reserved     []uint8  `proxy:"reserved,omitempty"`
+	AllowedIPs   []string `proxy:"allowed-ips,omitempty"`
+}
+
+type wgSingErrorHandler struct {
+	name string
+}
+
+var _ E.Handler = (*wgSingErrorHandler)(nil)
+
+func (w wgSingErrorHandler) NewError(ctx context.Context, err error) {
+	if E.IsClosedOrCanceled(err) {
+		log.SingLogger.Debug(fmt.Sprintf("[WG](%s) connection closed: %s", w.name, err))
+		return
+	}
+	log.SingLogger.Error(fmt.Sprintf("[WG](%s) %s", w.name, err))
+}
+
+type wgNetDialer struct {
+	tunDevice wireguard.Device
+}
+
+var _ dialer.NetDialer = (*wgNetDialer)(nil)
+
+func (d wgNetDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return d.tunDevice.DialContext(ctx, network, M.ParseSocksaddr(address).Unwrap())
+}
+
+func (option WireGuardPeerOption) Addr() M.Socksaddr {
+	return M.ParseSocksaddrHostPort(option.Server, uint16(option.Port))
+}
+
+func (option WireGuardPeerOption) Prefixes() ([]netip.Prefix, error) {
+	localPrefixes := make([]netip.Prefix, 0, 2)
+	if len(option.Ip) > 0 {
+		if !strings.Contains(option.Ip, "/") {
+			option.Ip = option.Ip + "/32"
+		}
+		if prefix, err := netip.ParsePrefix(option.Ip); err == nil {
+			localPrefixes = append(localPrefixes, prefix)
+		} else {
+			return nil, E.Cause(err, "ip address parse error")
+		}
+	}
+	if len(option.Ipv6) > 0 {
+		if !strings.Contains(option.Ipv6, "/") {
+			option.Ipv6 = option.Ipv6 + "/128"
+		}
+		if prefix, err := netip.ParsePrefix(option.Ipv6); err == nil {
+			localPrefixes = append(localPrefixes, prefix)
+		} else {
+			return nil, E.Cause(err, "ipv6 address parse error")
+		}
+	}
+	if len(localPrefixes) == 0 {
+		return nil, E.New("missing local address")
+	}
+	return localPrefixes, nil
+}
+
+func NewWireGuard(option WireGuardOption) (*WireGuard, error) {
+	outbound := &WireGuard{
+		Base: &Base{
+			name:   option.Name,
+			addr:   net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:     C.WireGuard,
+			udp:    option.UDP,
+			iface:  option.Interface,
+			rmark:  option.RoutingMark,
+			prefer: C.NewDNSPrefer(option.IPVersion),
+		},
+		dialer: proxydialer.NewByNameSingDialer(option.DialerProxy, dialer.NewDialer()),
+	}
+	runtime.SetFinalizer(outbound, closeWireGuard)
+
+	var reserved [3]uint8
+	if len(option.Reserved) > 0 {
+		if len(option.Reserved) != 3 {
+			return nil, E.New("invalid reserved value, required 3 bytes, got ", len(option.Reserved))
+		}
+		copy(reserved[:], option.Reserved)
+	}
+	var isConnect bool
+	var connectAddr M.Socksaddr
+	if len(option.Peers) < 2 {
+		isConnect = true
+		if len(option.Peers) == 1 {
+			connectAddr = option.Peers[0].Addr()
+		} else {
+			connectAddr = option.Addr()
+		}
+	}
+	outbound.bind = wireguard.NewClientBind(context.Background(), wgSingErrorHandler{outbound.Name()}, outbound.dialer, isConnect, connectAddr, reserved)
+
+	var localPrefixes []netip.Prefix
+
+	var privateKey string
+	{
+		bytes, err := base64.StdEncoding.DecodeString(option.PrivateKey)
+		if err != nil {
+			return nil, E.Cause(err, "decode private key")
+		}
+		privateKey = hex.EncodeToString(bytes)
+	}
+	ipcConf := "private_key=" + privateKey
+	if peersLen := len(option.Peers); peersLen > 0 {
+		localPrefixes = make([]netip.Prefix, 0, peersLen*2)
+		for i, peer := range option.Peers {
+			var peerPublicKey, preSharedKey string
+			{
+				bytes, err := base64.StdEncoding.DecodeString(peer.PublicKey)
+				if err != nil {
+					return nil, E.Cause(err, "decode public key for peer ", i)
+				}
+				peerPublicKey = hex.EncodeToString(bytes)
+			}
+			if peer.PreSharedKey != "" {
+				bytes, err := base64.StdEncoding.DecodeString(peer.PreSharedKey)
+				if err != nil {
+					return nil, E.Cause(err, "decode pre shared key for peer ", i)
+				}
+				preSharedKey = hex.EncodeToString(bytes)
+			}
+			destination := peer.Addr()
+			ipcConf += "\npublic_key=" + peerPublicKey
+			ipcConf += "\nendpoint=" + destination.String()
+			if preSharedKey != "" {
+				ipcConf += "\npreshared_key=" + preSharedKey
+			}
+			if len(peer.AllowedIPs) == 0 {
+				return nil, E.New("missing allowed_ips for peer ", i)
+			}
+			for _, allowedIP := range peer.AllowedIPs {
+				ipcConf += "\nallowed_ip=" + allowedIP
+			}
+			if len(peer.Reserved) > 0 {
+				if len(peer.Reserved) != 3 {
+					return nil, E.New("invalid reserved value for peer ", i, ", required 3 bytes, got ", len(peer.Reserved))
+				}
+				copy(reserved[:], option.Reserved)
+				outbound.bind.SetReservedForEndpoint(destination, reserved)
+			}
+			prefixes, err := peer.Prefixes()
+			if err != nil {
+				return nil, err
+			}
+			localPrefixes = append(localPrefixes, prefixes...)
+		}
+	} else {
+		var peerPublicKey, preSharedKey string
+		{
+			bytes, err := base64.StdEncoding.DecodeString(option.PublicKey)
+			if err != nil {
+				return nil, E.Cause(err, "decode peer public key")
+			}
+			peerPublicKey = hex.EncodeToString(bytes)
+		}
+		if option.PreSharedKey != "" {
+			bytes, err := base64.StdEncoding.DecodeString(option.PreSharedKey)
+			if err != nil {
+				return nil, E.Cause(err, "decode pre shared key")
+			}
+			preSharedKey = hex.EncodeToString(bytes)
+		}
+		ipcConf += "\npublic_key=" + peerPublicKey
+		ipcConf += "\nendpoint=" + connectAddr.String()
+		if preSharedKey != "" {
+			ipcConf += "\npreshared_key=" + preSharedKey
+		}
+		var err error
+		localPrefixes, err = option.Prefixes()
+		if err != nil {
+			return nil, err
+		}
+		var has4, has6 bool
+		for _, address := range localPrefixes {
+			if address.Addr().Is4() {
+				has4 = true
+			} else {
+				has6 = true
+			}
+		}
+		if has4 {
+			ipcConf += "\nallowed_ip=0.0.0.0/0"
+		}
+		if has6 {
+			ipcConf += "\nallowed_ip=::/0"
+		}
+	}
+
+	if option.PersistentKeepalive != 0 {
+		ipcConf += fmt.Sprintf("\npersistent_keepalive_interval=%d", option.PersistentKeepalive)
+	}
+	mtu := option.MTU
+	if mtu == 0 {
+		mtu = 1408
+	}
+	if len(localPrefixes) == 0 {
+		return nil, E.New("missing local address")
+	}
+	var err error
+	outbound.tunDevice, err = wireguard.NewStackDevice(localPrefixes, uint32(mtu))
+	if err != nil {
+		return nil, E.Cause(err, "create WireGuard device")
+	}
+	outbound.device = device.NewDevice(context.Background(), outbound.tunDevice, outbound.bind, &device.Logger{
+		Verbosef: func(format string, args ...interface{}) {
+			log.SingLogger.Debug(fmt.Sprintf("[WG](%s) %s", option.Name, fmt.Sprintf(format, args...)))
+		},
+		Errorf: func(format string, args ...interface{}) {
+			log.SingLogger.Error(fmt.Sprintf("[WG](%s) %s", option.Name, fmt.Sprintf(format, args...)))
+		},
+	}, option.Workers)
+	if debug.Enabled {
+		log.SingLogger.Trace(fmt.Sprintf("[WG](%s) created wireguard ipc conf: \n %s", option.Name, ipcConf))
+	}
+	err = outbound.device.IpcSet(ipcConf)
+	if err != nil {
+		return nil, E.Cause(err, "setup wireguard")
+	}
+	//err = outbound.tunDevice.Start()
+
+	var has6 bool
+	for _, address := range localPrefixes {
+		if !address.Addr().Unmap().Is4() {
+			has6 = true
+			break
+		}
+	}
+
+	refP := &refProxyAdapter{}
+	outbound.refP = refP
+	if option.RemoteDnsResolve && len(option.Dns) > 0 {
+		nss, err := dns.ParseNameServer(option.Dns)
+		if err != nil {
+			return nil, err
+		}
+		for i := range nss {
+			nss[i].ProxyAdapter = refP
+		}
+		outbound.resolver = dns.NewResolver(dns.Config{
+			Main: nss,
+			IPv6: has6,
+		})
+	}
+
+	return outbound, nil
+}
+
+func closeWireGuard(w *WireGuard) {
+	if w.device != nil {
+		w.device.Close()
+	}
+	_ = common.Close(w.tunDevice)
+}
+
+func (w *WireGuard) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	options := w.Base.DialOptions(opts...)
+	w.dialer.SetDialer(dialer.NewDialer(options...))
+	var conn net.Conn
+	w.startOnce.Do(func() {
+		w.startErr = w.tunDevice.Start()
+	})
+	if w.startErr != nil {
+		return nil, w.startErr
+	}
+	if !metadata.Resolved() || w.resolver != nil {
+		r := resolver.DefaultResolver
+		if w.resolver != nil {
+			w.refP.SetProxyAdapter(w)
+			defer w.refP.ClearProxyAdapter()
+			r = w.resolver
+		}
+		options = append(options, dialer.WithResolver(r))
+		options = append(options, dialer.WithNetDialer(wgNetDialer{tunDevice: w.tunDevice}))
+		conn, err = dialer.NewDialer(options...).DialContext(ctx, "tcp", metadata.RemoteAddress())
+	} else {
+		conn, err = w.tunDevice.DialContext(ctx, "tcp", M.SocksaddrFrom(metadata.DstIP, metadata.DstPort).Unwrap())
+	}
+	if err != nil {
+		return nil, err
+	}
+	if conn == nil {
+		return nil, E.New("conn is nil")
+	}
+	return NewConn(CN.NewRefConn(conn, w), w), nil
+}
+
+func (w *WireGuard) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	options := w.Base.DialOptions(opts...)
+	w.dialer.SetDialer(dialer.NewDialer(options...))
+	var pc net.PacketConn
+	w.startOnce.Do(func() {
+		w.startErr = w.tunDevice.Start()
+	})
+	if w.startErr != nil {
+		return nil, w.startErr
+	}
+	if err != nil {
+		return nil, err
+	}
+	if (!metadata.Resolved() || w.resolver != nil) && metadata.Host != "" {
+		r := resolver.DefaultResolver
+		if w.resolver != nil {
+			w.refP.SetProxyAdapter(w)
+			defer w.refP.ClearProxyAdapter()
+			r = w.resolver
+		}
+		ip, err := resolver.ResolveIPWithResolver(ctx, metadata.Host, r)
+		if err != nil {
+			return nil, errors.New("can't resolve ip")
+		}
+		metadata.DstIP = ip
+	}
+	pc, err = w.tunDevice.ListenPacket(ctx, M.SocksaddrFrom(metadata.DstIP, metadata.DstPort).Unwrap())
+	if err != nil {
+		return nil, err
+	}
+	if pc == nil {
+		return nil, E.New("packetConn is nil")
+	}
+	return newPacketConn(CN.NewRefPacketConn(pc, w), w), nil
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (w *WireGuard) IsL3Protocol(metadata *C.Metadata) bool {
+	return true
+}
+
+type refProxyAdapter struct {
+	proxyAdapter C.ProxyAdapter
+	count        int
+	mutex        sync.Mutex
+}
+
+func (r *refProxyAdapter) SetProxyAdapter(proxyAdapter C.ProxyAdapter) {
+	r.mutex.Lock()
+	defer r.mutex.Unlock()
+	r.proxyAdapter = proxyAdapter
+	r.count++
+}
+
+func (r *refProxyAdapter) ClearProxyAdapter() {
+	r.mutex.Lock()
+	defer r.mutex.Unlock()
+	r.count--
+	if r.count == 0 {
+		r.proxyAdapter = nil
+	}
+}
+
+func (r *refProxyAdapter) Name() string {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.Name()
+	}
+	return ""
+}
+
+func (r *refProxyAdapter) Type() C.AdapterType {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.Type()
+	}
+	return C.AdapterType(0)
+}
+
+func (r *refProxyAdapter) Addr() string {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.Addr()
+	}
+	return ""
+}
+
+func (r *refProxyAdapter) SupportUDP() bool {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.SupportUDP()
+	}
+	return false
+}
+
+func (r *refProxyAdapter) SupportXUDP() bool {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.SupportXUDP()
+	}
+	return false
+}
+
+func (r *refProxyAdapter) SupportTFO() bool {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.SupportTFO()
+	}
+	return false
+}
+
+func (r *refProxyAdapter) MarshalJSON() ([]byte, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.MarshalJSON()
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) StreamConnContext(ctx context.Context, c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.StreamConnContext(ctx, c, metadata)
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.DialContext(ctx, metadata, opts...)
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.ListenPacketContext(ctx, metadata, opts...)
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) SupportUOT() bool {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.SupportUOT()
+	}
+	return false
+}
+
+func (r *refProxyAdapter) SupportWithDialer() C.NetWork {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.SupportWithDialer()
+	}
+	return C.InvalidNet
+}
+
+func (r *refProxyAdapter) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (C.Conn, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.DialContextWithDialer(ctx, dialer, metadata)
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (C.PacketConn, error) {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.ListenPacketWithDialer(ctx, dialer, metadata)
+	}
+	return nil, C.ErrNotSupport
+}
+
+func (r *refProxyAdapter) IsL3Protocol(metadata *C.Metadata) bool {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.IsL3Protocol(metadata)
+	}
+	return false
+}
+
+func (r *refProxyAdapter) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	if r.proxyAdapter != nil {
+		return r.proxyAdapter.Unwrap(metadata, touch)
+	}
+	return nil
+}
+
+var _ C.ProxyAdapter = (*refProxyAdapter)(nil)

adapter/outboundgroup/fallback.go

@@ -0,0 +1,171 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/callback"
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+type Fallback struct {
+	*GroupBase
+	disableUDP     bool
+	testUrl        string
+	selected       string
+	expectedStatus string
+}
+
+func (f *Fallback) Now() string {
+	proxy := f.findAliveProxy(false)
+	return proxy.Name()
+}
+
+// DialContext implements C.ProxyAdapter
+func (f *Fallback) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	proxy := f.findAliveProxy(true)
+	c, err := proxy.DialContext(ctx, metadata, f.Base.DialOptions(opts...)...)
+	if err == nil {
+		c.AppendToChains(f)
+	} else {
+		f.onDialFailed(proxy.Type(), err)
+	}
+
+	if N.NeedHandshake(c) {
+		c = callback.NewFirstWriteCallBackConn(c, func(err error) {
+			if err == nil {
+				f.onDialSuccess()
+			} else {
+				f.onDialFailed(proxy.Type(), err)
+			}
+		})
+	}
+
+	return c, err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (f *Fallback) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	proxy := f.findAliveProxy(true)
+	pc, err := proxy.ListenPacketContext(ctx, metadata, f.Base.DialOptions(opts...)...)
+	if err == nil {
+		pc.AppendToChains(f)
+	}
+
+	return pc, err
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (f *Fallback) SupportUDP() bool {
+	if f.disableUDP {
+		return false
+	}
+
+	proxy := f.findAliveProxy(false)
+	return proxy.SupportUDP()
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (f *Fallback) IsL3Protocol(metadata *C.Metadata) bool {
+	return f.findAliveProxy(false).IsL3Protocol(metadata)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (f *Fallback) MarshalJSON() ([]byte, error) {
+	all := []string{}
+	for _, proxy := range f.GetProxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type":     f.Type().String(),
+		"now":      f.Now(),
+		"all":      all,
+		"testUrl":  f.testUrl,
+		"expected": f.expectedStatus,
+	})
+}
+
+// Unwrap implements C.ProxyAdapter
+func (f *Fallback) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	proxy := f.findAliveProxy(touch)
+	return proxy
+}
+
+func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
+	proxies := f.GetProxies(touch)
+	for _, proxy := range proxies {
+		if len(f.selected) == 0 {
+			// if proxy.Alive() {
+			if proxy.AliveForTestUrl(f.testUrl) {
+				return proxy
+			}
+		} else {
+			if proxy.Name() == f.selected {
+				// if proxy.Alive() {
+				if proxy.AliveForTestUrl(f.testUrl) {
+					return proxy
+				} else {
+					f.selected = ""
+				}
+			}
+		}
+	}
+
+	return proxies[0]
+}
+
+func (f *Fallback) Set(name string) error {
+	var p C.Proxy
+	for _, proxy := range f.GetProxies(false) {
+		if proxy.Name() == name {
+			p = proxy
+			break
+		}
+	}
+
+	if p == nil {
+		return errors.New("proxy not exist")
+	}
+
+	f.selected = name
+	// if !p.Alive() {
+	if !p.AliveForTestUrl(f.testUrl) {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*time.Duration(5000))
+		defer cancel()
+		expectedStatus, _ := utils.NewIntRanges[uint16](f.expectedStatus)
+		_, _ = p.URLTest(ctx, f.testUrl, expectedStatus, C.ExtraHistory)
+	}
+
+	return nil
+}
+
+func (f *Fallback) ForceSet(name string) {
+	f.selected = name
+}
+
+func NewFallback(option *GroupCommonOption, providers []provider.ProxyProvider) *Fallback {
+	return &Fallback{
+		GroupBase: NewGroupBase(GroupBaseOption{
+			outbound.BaseOption{
+				Name:        option.Name,
+				Type:        C.Fallback,
+				Interface:   option.Interface,
+				RoutingMark: option.RoutingMark,
+			},
+			option.Filter,
+			option.ExcludeFilter,
+			option.ExcludeType,
+			providers,
+		}),
+		disableUDP:     option.DisableUDP,
+		testUrl:        option.URL,
+		expectedStatus: option.ExpectedStatus,
+	}
+}

adapter/outboundgroup/groupbase.go

@@ -0,0 +1,294 @@
+package outboundgroup
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/atomic"
+	"github.com/Dreamacro/clash/common/utils"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+	types "github.com/Dreamacro/clash/constant/provider"
+	"github.com/Dreamacro/clash/log"
+	"github.com/Dreamacro/clash/tunnel"
+
+	"github.com/dlclark/regexp2"
+)
+
+type GroupBase struct {
+	*outbound.Base
+	filterRegs       []*regexp2.Regexp
+	excludeFilterReg *regexp2.Regexp
+	excludeTypeArray []string
+	providers        []provider.ProxyProvider
+	failedTestMux    sync.Mutex
+	failedTimes      int
+	failedTime       time.Time
+	failedTesting    atomic.Bool
+	proxies          [][]C.Proxy
+	versions         []atomic.Uint32
+}
+
+type GroupBaseOption struct {
+	outbound.BaseOption
+	filter        string
+	excludeFilter string
+	excludeType   string
+	providers     []provider.ProxyProvider
+}
+
+func NewGroupBase(opt GroupBaseOption) *GroupBase {
+	var excludeFilterReg *regexp2.Regexp
+	if opt.excludeFilter != "" {
+		excludeFilterReg = regexp2.MustCompile(opt.excludeFilter, 0)
+	}
+	var excludeTypeArray []string
+	if opt.excludeType != "" {
+		excludeTypeArray = strings.Split(opt.excludeType, "|")
+	}
+
+	var filterRegs []*regexp2.Regexp
+	if opt.filter != "" {
+		for _, filter := range strings.Split(opt.filter, "`") {
+			filterReg := regexp2.MustCompile(filter, 0)
+			filterRegs = append(filterRegs, filterReg)
+		}
+	}
+
+	gb := &GroupBase{
+		Base:             outbound.NewBase(opt.BaseOption),
+		filterRegs:       filterRegs,
+		excludeFilterReg: excludeFilterReg,
+		excludeTypeArray: excludeTypeArray,
+		providers:        opt.providers,
+		failedTesting:    atomic.NewBool(false),
+	}
+
+	gb.proxies = make([][]C.Proxy, len(opt.providers))
+	gb.versions = make([]atomic.Uint32, len(opt.providers))
+
+	return gb
+}
+
+func (gb *GroupBase) Touch() {
+	for _, pd := range gb.providers {
+		pd.Touch()
+	}
+}
+
+func (gb *GroupBase) GetProxies(touch bool) []C.Proxy {
+	var proxies []C.Proxy
+	if len(gb.filterRegs) == 0 {
+		for _, pd := range gb.providers {
+			if touch {
+				pd.Touch()
+			}
+			proxies = append(proxies, pd.Proxies()...)
+		}
+	} else {
+		for i, pd := range gb.providers {
+			if touch {
+				pd.Touch()
+			}
+
+			if pd.VehicleType() == types.Compatible {
+				gb.versions[i].Store(pd.Version())
+				gb.proxies[i] = pd.Proxies()
+				continue
+			}
+
+			version := gb.versions[i].Load()
+			if version != pd.Version() && gb.versions[i].CompareAndSwap(version, pd.Version()) {
+				var (
+					proxies    []C.Proxy
+					newProxies []C.Proxy
+				)
+
+				proxies = pd.Proxies()
+				proxiesSet := map[string]struct{}{}
+				for _, filterReg := range gb.filterRegs {
+					for _, p := range proxies {
+						name := p.Name()
+						if mat, _ := filterReg.FindStringMatch(name); mat != nil {
+							if _, ok := proxiesSet[name]; !ok {
+								proxiesSet[name] = struct{}{}
+								newProxies = append(newProxies, p)
+							}
+						}
+					}
+				}
+
+				gb.proxies[i] = newProxies
+			}
+		}
+
+		for _, p := range gb.proxies {
+			proxies = append(proxies, p...)
+		}
+	}
+
+	if len(gb.providers) > 1 && len(gb.filterRegs) > 1 {
+		var newProxies []C.Proxy
+		proxiesSet := map[string]struct{}{}
+		for _, filterReg := range gb.filterRegs {
+			for _, p := range proxies {
+				name := p.Name()
+				if mat, _ := filterReg.FindStringMatch(name); mat != nil {
+					if _, ok := proxiesSet[name]; !ok {
+						proxiesSet[name] = struct{}{}
+						newProxies = append(newProxies, p)
+					}
+				}
+			}
+		}
+		for _, p := range proxies { // add not matched proxies at the end
+			name := p.Name()
+			if _, ok := proxiesSet[name]; !ok {
+				proxiesSet[name] = struct{}{}
+				newProxies = append(newProxies, p)
+			}
+		}
+		proxies = newProxies
+	}
+	if gb.excludeTypeArray != nil {
+		var newProxies []C.Proxy
+		for _, p := range proxies {
+			mType := p.Type().String()
+			flag := false
+			for i := range gb.excludeTypeArray {
+				if strings.EqualFold(mType, gb.excludeTypeArray[i]) {
+					flag = true
+					break
+				}
+
+			}
+			if flag {
+				continue
+			}
+			newProxies = append(newProxies, p)
+		}
+		proxies = newProxies
+	}
+
+	if gb.excludeFilterReg != nil {
+		var newProxies []C.Proxy
+		for _, p := range proxies {
+			name := p.Name()
+			if mat, _ := gb.excludeFilterReg.FindStringMatch(name); mat != nil {
+				continue
+			}
+			newProxies = append(newProxies, p)
+		}
+		proxies = newProxies
+	}
+
+	if len(proxies) == 0 {
+		return append(proxies, tunnel.Proxies()["COMPATIBLE"])
+	}
+
+	return proxies
+}
+
+func (gb *GroupBase) URLTest(ctx context.Context, url string, expectedStatus utils.IntRanges[uint16]) (map[string]uint16, error) {
+	var wg sync.WaitGroup
+	var lock sync.Mutex
+	mp := map[string]uint16{}
+	proxies := gb.GetProxies(false)
+	for _, proxy := range proxies {
+		proxy := proxy
+		wg.Add(1)
+		go func() {
+			delay, err := proxy.URLTest(ctx, url, expectedStatus, C.DropHistory)
+			if err == nil {
+				lock.Lock()
+				mp[proxy.Name()] = delay
+				lock.Unlock()
+			}
+
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+
+	if len(mp) == 0 {
+		return mp, fmt.Errorf("get delay: all proxies timeout")
+	} else {
+		return mp, nil
+	}
+}
+
+func (gb *GroupBase) onDialFailed(adapterType C.AdapterType, err error) {
+	if adapterType == C.Direct || adapterType == C.Compatible || adapterType == C.Reject || adapterType == C.Pass {
+		return
+	}
+
+	if strings.Contains(err.Error(), "connection refused") {
+		go gb.healthCheck()
+		return
+	}
+
+	go func() {
+		gb.failedTestMux.Lock()
+		defer gb.failedTestMux.Unlock()
+
+		gb.failedTimes++
+		if gb.failedTimes == 1 {
+			log.Debugln("ProxyGroup: %s first failed", gb.Name())
+			gb.failedTime = time.Now()
+		} else {
+			if time.Since(gb.failedTime) > gb.failedTimeoutInterval() {
+				gb.failedTimes = 0
+				return
+			}
+
+			log.Debugln("ProxyGroup: %s failed count: %d", gb.Name(), gb.failedTimes)
+			if gb.failedTimes >= gb.maxFailedTimes() {
+				log.Warnln("because %s failed multiple times, active health check", gb.Name())
+				gb.healthCheck()
+			}
+		}
+	}()
+}
+
+func (gb *GroupBase) healthCheck() {
+	if gb.failedTesting.Load() {
+		return
+	}
+
+	gb.failedTesting.Store(true)
+	wg := sync.WaitGroup{}
+	for _, proxyProvider := range gb.providers {
+		wg.Add(1)
+		proxyProvider := proxyProvider
+		go func() {
+			defer wg.Done()
+			proxyProvider.HealthCheck()
+		}()
+	}
+
+	wg.Wait()
+	gb.failedTesting.Store(false)
+	gb.failedTimes = 0
+}
+
+func (gb *GroupBase) failedIntervalTime() int64 {
+	return 5 * time.Second.Milliseconds()
+}
+
+func (gb *GroupBase) onDialSuccess() {
+	if !gb.failedTesting.Load() {
+		gb.failedTimes = 0
+	}
+}
+
+func (gb *GroupBase) maxFailedTimes() int {
+	return 5
+}
+
+func (gb *GroupBase) failedTimeoutInterval() time.Duration {
+	return 5 * time.Second
+}

adapter/outboundgroup/loadbalance.go

@@ -0,0 +1,276 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/cache"
+	"github.com/Dreamacro/clash/common/callback"
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+
+	"golang.org/x/net/publicsuffix"
+)
+
+type strategyFn = func(proxies []C.Proxy, metadata *C.Metadata, touch bool) C.Proxy
+
+type LoadBalance struct {
+	*GroupBase
+	disableUDP     bool
+	strategyFn     strategyFn
+	testUrl        string
+	expectedStatus string
+}
+
+var errStrategy = errors.New("unsupported strategy")
+
+func parseStrategy(config map[string]any) string {
+	if strategy, ok := config["strategy"].(string); ok {
+		return strategy
+	}
+	return "consistent-hashing"
+}
+
+func getKey(metadata *C.Metadata) string {
+	if metadata == nil {
+		return ""
+	}
+
+	if metadata.Host != "" {
+		// ip host
+		if ip := net.ParseIP(metadata.Host); ip != nil {
+			return metadata.Host
+		}
+
+		if etld, err := publicsuffix.EffectiveTLDPlusOne(metadata.Host); err == nil {
+			return etld
+		}
+	}
+
+	if !metadata.DstIP.IsValid() {
+		return ""
+	}
+
+	return metadata.DstIP.String()
+}
+
+func getKeyWithSrcAndDst(metadata *C.Metadata) string {
+	dst := getKey(metadata)
+	src := ""
+	if metadata != nil {
+		src = metadata.SrcIP.String()
+	}
+
+	return fmt.Sprintf("%s%s", src, dst)
+}
+
+func jumpHash(key uint64, buckets int32) int32 {
+	var b, j int64
+
+	for j < int64(buckets) {
+		b = j
+		key = key*2862933555777941757 + 1
+		j = int64(float64(b+1) * (float64(int64(1)<<31) / float64((key>>33)+1)))
+	}
+
+	return int32(b)
+}
+
+// DialContext implements C.ProxyAdapter
+func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (c C.Conn, err error) {
+	proxy := lb.Unwrap(metadata, true)
+	c, err = proxy.DialContext(ctx, metadata, lb.Base.DialOptions(opts...)...)
+
+	if err == nil {
+		c.AppendToChains(lb)
+	} else {
+		lb.onDialFailed(proxy.Type(), err)
+	}
+
+	if N.NeedHandshake(c) {
+		c = callback.NewFirstWriteCallBackConn(c, func(err error) {
+			if err == nil {
+				lb.onDialSuccess()
+			} else {
+				lb.onDialFailed(proxy.Type(), err)
+			}
+		})
+	}
+
+	return
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (lb *LoadBalance) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (pc C.PacketConn, err error) {
+	defer func() {
+		if err == nil {
+			pc.AppendToChains(lb)
+		}
+	}()
+
+	proxy := lb.Unwrap(metadata, true)
+	return proxy.ListenPacketContext(ctx, metadata, lb.Base.DialOptions(opts...)...)
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (lb *LoadBalance) SupportUDP() bool {
+	return !lb.disableUDP
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (lb *LoadBalance) IsL3Protocol(metadata *C.Metadata) bool {
+	return lb.Unwrap(metadata, false).IsL3Protocol(metadata)
+}
+
+func strategyRoundRobin(url string) strategyFn {
+	idx := 0
+	idxMutex := sync.Mutex{}
+	return func(proxies []C.Proxy, metadata *C.Metadata, touch bool) C.Proxy {
+		idxMutex.Lock()
+		defer idxMutex.Unlock()
+
+		i := 0
+		length := len(proxies)
+
+		if touch {
+			defer func() {
+				idx = (idx + i) % length
+			}()
+		}
+
+		for ; i < length; i++ {
+			id := (idx + i) % length
+			proxy := proxies[id]
+			// if proxy.Alive() {
+			if proxy.AliveForTestUrl(url) {
+				i++
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+func strategyConsistentHashing(url string) strategyFn {
+	maxRetry := 5
+	return func(proxies []C.Proxy, metadata *C.Metadata, touch bool) C.Proxy {
+		key := utils.MapHash(getKey(metadata))
+		buckets := int32(len(proxies))
+		for i := 0; i < maxRetry; i, key = i+1, key+1 {
+			idx := jumpHash(key, buckets)
+			proxy := proxies[idx]
+			// if proxy.Alive() {
+			if proxy.AliveForTestUrl(url) {
+				return proxy
+			}
+		}
+
+		// when availability is poor, traverse the entire list to get the available nodes
+		for _, proxy := range proxies {
+			// if proxy.Alive() {
+			if proxy.AliveForTestUrl(url) {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+func strategyStickySessions(url string) strategyFn {
+	ttl := time.Minute * 10
+	maxRetry := 5
+	lruCache := cache.New[uint64, int](
+		cache.WithAge[uint64, int](int64(ttl.Seconds())),
+		cache.WithSize[uint64, int](1000))
+	return func(proxies []C.Proxy, metadata *C.Metadata, touch bool) C.Proxy {
+		key := utils.MapHash(getKeyWithSrcAndDst(metadata))
+		length := len(proxies)
+		idx, has := lruCache.Get(key)
+		if !has {
+			idx = int(jumpHash(key+uint64(time.Now().UnixNano()), int32(length)))
+		}
+
+		nowIdx := idx
+		for i := 1; i < maxRetry; i++ {
+			proxy := proxies[nowIdx]
+			// if proxy.Alive() {
+			if proxy.AliveForTestUrl(url) {
+				if nowIdx != idx {
+					lruCache.Delete(key)
+					lruCache.Set(key, nowIdx)
+				}
+
+				return proxy
+			} else {
+				nowIdx = int(jumpHash(key+uint64(time.Now().UnixNano()), int32(length)))
+			}
+		}
+
+		lruCache.Delete(key)
+		lruCache.Set(key, 0)
+		return proxies[0]
+	}
+}
+
+// Unwrap implements C.ProxyAdapter
+func (lb *LoadBalance) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	proxies := lb.GetProxies(touch)
+	return lb.strategyFn(proxies, metadata, touch)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range lb.GetProxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type":           lb.Type().String(),
+		"all":            all,
+		"testUrl":        lb.testUrl,
+		"expectedStatus": lb.expectedStatus,
+	})
+}
+
+func NewLoadBalance(option *GroupCommonOption, providers []provider.ProxyProvider, strategy string) (lb *LoadBalance, err error) {
+	var strategyFn strategyFn
+	switch strategy {
+	case "consistent-hashing":
+		strategyFn = strategyConsistentHashing(option.URL)
+	case "round-robin":
+		strategyFn = strategyRoundRobin(option.URL)
+	case "sticky-sessions":
+		strategyFn = strategyStickySessions(option.URL)
+	default:
+		return nil, fmt.Errorf("%w: %s", errStrategy, strategy)
+	}
+	return &LoadBalance{
+		GroupBase: NewGroupBase(GroupBaseOption{
+			outbound.BaseOption{
+				Name:        option.Name,
+				Type:        C.LoadBalance,
+				Interface:   option.Interface,
+				RoutingMark: option.RoutingMark,
+			},
+			option.Filter,
+			option.ExcludeFilter,
+			option.ExcludeType,
+			providers,
+		}),
+		strategyFn:     strategyFn,
+		disableUDP:     option.DisableUDP,
+		testUrl:        option.URL,
+		expectedStatus: option.ExpectedStatus,
+	}, nil
+}

adapter/outboundgroup/parser.go

@@ -0,0 +1,181 @@
+package outboundgroup
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/provider"
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/common/utils"
+	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
+)
+
+var (
+	errFormat            = errors.New("format error")
+	errType              = errors.New("unsupported type")
+	errMissProxy         = errors.New("`use` or `proxies` missing")
+	errDuplicateProvider = errors.New("duplicate provider name")
+)
+
+type GroupCommonOption struct {
+	outbound.BasicOption
+	Name           string   `group:"name"`
+	Type           string   `group:"type"`
+	Proxies        []string `group:"proxies,omitempty"`
+	Use            []string `group:"use,omitempty"`
+	URL            string   `group:"url,omitempty"`
+	Interval       int      `group:"interval,omitempty"`
+	Lazy           bool     `group:"lazy,omitempty"`
+	DisableUDP     bool     `group:"disable-udp,omitempty"`
+	Filter         string   `group:"filter,omitempty"`
+	ExcludeFilter  string   `group:"exclude-filter,omitempty"`
+	ExcludeType    string   `group:"exclude-type,omitempty"`
+	ExpectedStatus string   `group:"expected-status,omitempty"`
+}
+
+func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, providersMap map[string]types.ProxyProvider) (C.ProxyAdapter, error) {
+	decoder := structure.NewDecoder(structure.Option{TagName: "group", WeaklyTypedInput: true})
+
+	groupOption := &GroupCommonOption{
+		Lazy: true,
+	}
+	if err := decoder.Decode(config, groupOption); err != nil {
+		return nil, errFormat
+	}
+
+	if groupOption.Type == "" || groupOption.Name == "" {
+		return nil, errFormat
+	}
+
+	groupName := groupOption.Name
+
+	providers := []types.ProxyProvider{}
+
+	if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 {
+		return nil, fmt.Errorf("%s: %w", groupName, errMissProxy)
+	}
+
+	expectedStatus, err := utils.NewIntRanges[uint16](groupOption.ExpectedStatus)
+	if err != nil {
+		return nil, fmt.Errorf("%s: %w", groupName, err)
+	}
+
+	status := strings.TrimSpace(groupOption.ExpectedStatus)
+	if status == "" {
+		status = "*"
+	}
+	groupOption.ExpectedStatus = status
+	testUrl := groupOption.URL
+
+	if len(groupOption.Proxies) != 0 {
+		ps, err := getProxies(proxyMap, groupOption.Proxies)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %w", groupName, err)
+		}
+
+		if _, ok := providersMap[groupName]; ok {
+			return nil, fmt.Errorf("%s: %w", groupName, errDuplicateProvider)
+		}
+
+		var url string
+		var interval uint
+
+		// select don't need health check
+		if groupOption.Type != "select" && groupOption.Type != "relay" {
+			if groupOption.URL == "" {
+				groupOption.URL = "https://cp.cloudflare.com/generate_204"
+			}
+
+			if groupOption.Interval == 0 {
+				groupOption.Interval = 300
+			}
+
+			url = groupOption.URL
+			interval = uint(groupOption.Interval)
+		}
+
+		hc := provider.NewHealthCheck(ps, url, interval, true, expectedStatus)
+		pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %w", groupName, err)
+		}
+
+		providers = append(providers, pd)
+		providersMap[groupName] = pd
+	}
+
+	if len(groupOption.Use) != 0 {
+		list, err := getProviders(providersMap, groupOption.Use)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %w", groupName, err)
+		}
+
+		// different proxy groups use different test URL
+		addTestUrlToProviders(list, testUrl, expectedStatus, groupOption.Filter, uint(groupOption.Interval))
+
+		providers = append(providers, list...)
+	} else {
+		groupOption.Filter = ""
+	}
+
+	var group C.ProxyAdapter
+	switch groupOption.Type {
+	case "url-test":
+		opts := parseURLTestOption(config)
+		group = NewURLTest(groupOption, providers, opts...)
+	case "select":
+		group = NewSelector(groupOption, providers)
+	case "fallback":
+		group = NewFallback(groupOption, providers)
+	case "load-balance":
+		strategy := parseStrategy(config)
+		return NewLoadBalance(groupOption, providers, strategy)
+	case "relay":
+		group = NewRelay(groupOption, providers)
+	default:
+		return nil, fmt.Errorf("%w: %s", errType, groupOption.Type)
+	}
+
+	return group, nil
+}
+
+func getProxies(mapping map[string]C.Proxy, list []string) ([]C.Proxy, error) {
+	var ps []C.Proxy
+	for _, name := range list {
+		p, ok := mapping[name]
+		if !ok {
+			return nil, fmt.Errorf("'%s' not found", name)
+		}
+		ps = append(ps, p)
+	}
+	return ps, nil
+}
+
+func getProviders(mapping map[string]types.ProxyProvider, list []string) ([]types.ProxyProvider, error) {
+	var ps []types.ProxyProvider
+	for _, name := range list {
+		p, ok := mapping[name]
+		if !ok {
+			return nil, fmt.Errorf("'%s' not found", name)
+		}
+
+		if p.VehicleType() == types.Compatible {
+			return nil, fmt.Errorf("proxy group %s can't contains in `use`", name)
+		}
+		ps = append(ps, p)
+	}
+	return ps, nil
+}
+
+func addTestUrlToProviders(providers []types.ProxyProvider, url string, expectedStatus utils.IntRanges[uint16], filter string, interval uint) {
+	if len(providers) == 0 || len(url) == 0 {
+		return
+	}
+
+	for _, pd := range providers {
+		pd.RegisterHealthCheckTask(url, expectedStatus, filter, interval)
+	}
+}

adapter/outboundgroup/patch.go

@@ -0,0 +1,62 @@
+package outboundgroup
+
+import (
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+type ProxyGroup interface {
+	C.ProxyAdapter
+
+	Providers() []provider.ProxyProvider
+	Proxies() []C.Proxy
+	Now() string
+}
+
+func (f *Fallback) Providers() []provider.ProxyProvider {
+	return f.providers
+}
+
+func (lb *LoadBalance) Providers() []provider.ProxyProvider {
+	return lb.providers
+}
+
+func (f *Fallback) Proxies() []C.Proxy {
+	return f.GetProxies(false)
+}
+
+func (lb *LoadBalance) Proxies() []C.Proxy {
+	return lb.GetProxies(false)
+}
+
+func (lb *LoadBalance) Now() string {
+	return ""
+}
+
+func (r *Relay) Providers() []provider.ProxyProvider {
+	return r.providers
+}
+
+func (r *Relay) Proxies() []C.Proxy {
+	return r.GetProxies(false)
+}
+
+func (r *Relay) Now() string {
+	return ""
+}
+
+func (s *Selector) Providers() []provider.ProxyProvider {
+	return s.providers
+}
+
+func (s *Selector) Proxies() []C.Proxy {
+	return s.GetProxies(false)
+}
+
+func (u *URLTest) Providers() []provider.ProxyProvider {
+	return u.providers
+}
+
+func (u *URLTest) Proxies() []C.Proxy {
+	return u.GetProxies(false)
+}

adapter/outboundgroup/relay.go

@@ -0,0 +1,161 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/proxydialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+type Relay struct {
+	*GroupBase
+}
+
+// DialContext implements C.ProxyAdapter
+func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	proxies, chainProxies := r.proxies(metadata, true)
+
+	switch len(proxies) {
+	case 0:
+		return outbound.NewDirect().DialContext(ctx, metadata, r.Base.DialOptions(opts...)...)
+	case 1:
+		return proxies[0].DialContext(ctx, metadata, r.Base.DialOptions(opts...)...)
+	}
+	var d C.Dialer
+	d = dialer.NewDialer(r.Base.DialOptions(opts...)...)
+	for _, proxy := range proxies[:len(proxies)-1] {
+		d = proxydialer.New(proxy, d, false)
+	}
+	last := proxies[len(proxies)-1]
+	conn, err := last.DialContextWithDialer(ctx, d, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := len(chainProxies) - 2; i >= 0; i-- {
+		conn.AppendToChains(chainProxies[i])
+	}
+
+	conn.AppendToChains(r)
+
+	return conn, nil
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (r *Relay) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	proxies, chainProxies := r.proxies(metadata, true)
+
+	switch len(proxies) {
+	case 0:
+		return outbound.NewDirect().ListenPacketContext(ctx, metadata, r.Base.DialOptions(opts...)...)
+	case 1:
+		return proxies[0].ListenPacketContext(ctx, metadata, r.Base.DialOptions(opts...)...)
+	}
+
+	var d C.Dialer
+	d = dialer.NewDialer(r.Base.DialOptions(opts...)...)
+	for _, proxy := range proxies[:len(proxies)-1] {
+		d = proxydialer.New(proxy, d, false)
+	}
+	last := proxies[len(proxies)-1]
+	pc, err := last.ListenPacketWithDialer(ctx, d, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := len(chainProxies) - 2; i >= 0; i-- {
+		pc.AppendToChains(chainProxies[i])
+	}
+
+	pc.AppendToChains(r)
+
+	return pc, nil
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (r *Relay) SupportUDP() bool {
+	proxies, _ := r.proxies(nil, false)
+	if len(proxies) == 0 { // C.Direct
+		return true
+	}
+	for i := len(proxies) - 1; i >= 0; i-- {
+		proxy := proxies[i]
+		if !proxy.SupportUDP() {
+			return false
+		}
+		if proxy.SupportUOT() {
+			return true
+		}
+		switch proxy.SupportWithDialer() {
+		case C.ALLNet:
+		case C.UDP:
+		default: // C.TCP and C.InvalidNet
+			return false
+		}
+	}
+	return true
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (r *Relay) MarshalJSON() ([]byte, error) {
+	all := []string{}
+	for _, proxy := range r.GetProxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type": r.Type().String(),
+		"all":  all,
+	})
+}
+
+func (r *Relay) proxies(metadata *C.Metadata, touch bool) ([]C.Proxy, []C.Proxy) {
+	rawProxies := r.GetProxies(touch)
+
+	var proxies []C.Proxy
+	var chainProxies []C.Proxy
+	var targetProxies []C.Proxy
+
+	for n, proxy := range rawProxies {
+		proxies = append(proxies, proxy)
+		chainProxies = append(chainProxies, proxy)
+		subproxy := proxy.Unwrap(metadata, touch)
+		for subproxy != nil {
+			chainProxies = append(chainProxies, subproxy)
+			proxies[n] = subproxy
+			subproxy = subproxy.Unwrap(metadata, touch)
+		}
+	}
+
+	for _, proxy := range proxies {
+		if proxy.Type() != C.Direct && proxy.Type() != C.Compatible {
+			targetProxies = append(targetProxies, proxy)
+		}
+	}
+
+	return targetProxies, chainProxies
+}
+
+func (r *Relay) Addr() string {
+	proxies, _ := r.proxies(nil, false)
+	return proxies[len(proxies)-1].Addr()
+}
+
+func NewRelay(option *GroupCommonOption, providers []provider.ProxyProvider) *Relay {
+	return &Relay{
+		GroupBase: NewGroupBase(GroupBaseOption{
+			outbound.BaseOption{
+				Name:        option.Name,
+				Type:        C.Relay,
+				Interface:   option.Interface,
+				RoutingMark: option.RoutingMark,
+			},
+			"",
+			"",
+			"",
+			providers,
+		}),
+	}
+}

adapter/outboundgroup/selector.go

@@ -0,0 +1,118 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+type Selector struct {
+	*GroupBase
+	disableUDP bool
+	selected   string
+}
+
+// DialContext implements C.ProxyAdapter
+func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	c, err := s.selectedProxy(true).DialContext(ctx, metadata, s.Base.DialOptions(opts...)...)
+	if err == nil {
+		c.AppendToChains(s)
+	}
+	return c, err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (s *Selector) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	pc, err := s.selectedProxy(true).ListenPacketContext(ctx, metadata, s.Base.DialOptions(opts...)...)
+	if err == nil {
+		pc.AppendToChains(s)
+	}
+	return pc, err
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (s *Selector) SupportUDP() bool {
+	if s.disableUDP {
+		return false
+	}
+
+	return s.selectedProxy(false).SupportUDP()
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (s *Selector) IsL3Protocol(metadata *C.Metadata) bool {
+	return s.selectedProxy(false).IsL3Protocol(metadata)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (s *Selector) MarshalJSON() ([]byte, error) {
+	all := []string{}
+	for _, proxy := range s.GetProxies(false) {
+		all = append(all, proxy.Name())
+	}
+
+	return json.Marshal(map[string]any{
+		"type": s.Type().String(),
+		"now":  s.Now(),
+		"all":  all,
+	})
+}
+
+func (s *Selector) Now() string {
+	return s.selectedProxy(false).Name()
+}
+
+func (s *Selector) Set(name string) error {
+	for _, proxy := range s.GetProxies(false) {
+		if proxy.Name() == name {
+			s.selected = name
+			return nil
+		}
+	}
+
+	return errors.New("proxy not exist")
+}
+
+func (s *Selector) ForceSet(name string) {
+	s.selected = name
+}
+
+// Unwrap implements C.ProxyAdapter
+func (s *Selector) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	return s.selectedProxy(touch)
+}
+
+func (s *Selector) selectedProxy(touch bool) C.Proxy {
+	proxies := s.GetProxies(touch)
+	for _, proxy := range proxies {
+		if proxy.Name() == s.selected {
+			return proxy
+		}
+	}
+
+	return proxies[0]
+}
+
+func NewSelector(option *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
+	return &Selector{
+		GroupBase: NewGroupBase(GroupBaseOption{
+			outbound.BaseOption{
+				Name:        option.Name,
+				Type:        C.Selector,
+				Interface:   option.Interface,
+				RoutingMark: option.RoutingMark,
+			},
+			option.Filter,
+			option.ExcludeFilter,
+			option.ExcludeType,
+			providers,
+		}),
+		selected:   "COMPATIBLE",
+		disableUDP: option.DisableUDP,
+	}
+}

adapter/outboundgroup/urltest.go

@@ -0,0 +1,219 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/callback"
+	N "github.com/Dreamacro/clash/common/net"
+	"github.com/Dreamacro/clash/common/singledo"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+type urlTestOption func(*URLTest)
+
+func urlTestWithTolerance(tolerance uint16) urlTestOption {
+	return func(u *URLTest) {
+		u.tolerance = tolerance
+	}
+}
+
+type URLTest struct {
+	*GroupBase
+	selected       string
+	testUrl        string
+	expectedStatus string
+	tolerance      uint16
+	disableUDP     bool
+	fastNode       C.Proxy
+	fastSingle     *singledo.Single[C.Proxy]
+}
+
+func (u *URLTest) Now() string {
+	return u.fast(false).Name()
+}
+
+func (u *URLTest) Set(name string) error {
+	var p C.Proxy
+	for _, proxy := range u.GetProxies(false) {
+		if proxy.Name() == name {
+			p = proxy
+			break
+		}
+	}
+	if p == nil {
+		return errors.New("proxy not exist")
+	}
+	u.selected = name
+	u.fast(false)
+	return nil
+}
+
+func (u *URLTest) ForceSet(name string) {
+	u.selected = name
+}
+
+// DialContext implements C.ProxyAdapter
+func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (c C.Conn, err error) {
+	proxy := u.fast(true)
+	c, err = proxy.DialContext(ctx, metadata, u.Base.DialOptions(opts...)...)
+	if err == nil {
+		c.AppendToChains(u)
+	} else {
+		u.onDialFailed(proxy.Type(), err)
+	}
+
+	if N.NeedHandshake(c) {
+		c = callback.NewFirstWriteCallBackConn(c, func(err error) {
+			if err == nil {
+				u.onDialSuccess()
+			} else {
+				u.onDialFailed(proxy.Type(), err)
+			}
+		})
+	}
+
+	return c, err
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (u *URLTest) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	pc, err := u.fast(true).ListenPacketContext(ctx, metadata, u.Base.DialOptions(opts...)...)
+	if err == nil {
+		pc.AppendToChains(u)
+	}
+
+	return pc, err
+}
+
+// Unwrap implements C.ProxyAdapter
+func (u *URLTest) Unwrap(metadata *C.Metadata, touch bool) C.Proxy {
+	return u.fast(touch)
+}
+
+func (u *URLTest) fast(touch bool) C.Proxy {
+
+	proxies := u.GetProxies(touch)
+	if u.selected != "" {
+		for _, proxy := range proxies {
+			if !proxy.Alive() {
+				continue
+			}
+			if proxy.Name() == u.selected {
+				u.fastNode = proxy
+				return proxy
+			}
+		}
+	}
+
+	elm, _, shared := u.fastSingle.Do(func() (C.Proxy, error) {
+		fast := proxies[0]
+		// min := fast.LastDelay()
+		min := fast.LastDelayForTestUrl(u.testUrl)
+		fastNotExist := true
+
+		for _, proxy := range proxies[1:] {
+			if u.fastNode != nil && proxy.Name() == u.fastNode.Name() {
+				fastNotExist = false
+			}
+
+			// if !proxy.Alive() {
+			if !proxy.AliveForTestUrl(u.testUrl) {
+				continue
+			}
+
+			// delay := proxy.LastDelay()
+			delay := proxy.LastDelayForTestUrl(u.testUrl)
+			if delay < min {
+				fast = proxy
+				min = delay
+			}
+
+		}
+		// tolerance
+		// if u.fastNode == nil || fastNotExist || !u.fastNode.Alive() || u.fastNode.LastDelay() > fast.LastDelay()+u.tolerance {
+		if u.fastNode == nil || fastNotExist || !u.fastNode.AliveForTestUrl(u.testUrl) || u.fastNode.LastDelayForTestUrl(u.testUrl) > fast.LastDelayForTestUrl(u.testUrl)+u.tolerance {
+			u.fastNode = fast
+		}
+		return u.fastNode, nil
+	})
+	if shared && touch { // a shared fastSingle.Do() may cause providers untouched, so we touch them again
+		u.Touch()
+	}
+
+	return elm
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (u *URLTest) SupportUDP() bool {
+	if u.disableUDP {
+		return false
+	}
+	return u.fast(false).SupportUDP()
+}
+
+// IsL3Protocol implements C.ProxyAdapter
+func (u *URLTest) IsL3Protocol(metadata *C.Metadata) bool {
+	return u.fast(false).IsL3Protocol(metadata)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (u *URLTest) MarshalJSON() ([]byte, error) {
+	all := []string{}
+	for _, proxy := range u.GetProxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type":     u.Type().String(),
+		"now":      u.Now(),
+		"all":      all,
+		"testUrl":  u.testUrl,
+		"expected": u.expectedStatus,
+	})
+}
+
+func parseURLTestOption(config map[string]any) []urlTestOption {
+	opts := []urlTestOption{}
+
+	// tolerance
+	if elm, ok := config["tolerance"]; ok {
+		if tolerance, ok := elm.(int); ok {
+			opts = append(opts, urlTestWithTolerance(uint16(tolerance)))
+		}
+	}
+
+	return opts
+}
+
+func NewURLTest(option *GroupCommonOption, providers []provider.ProxyProvider, options ...urlTestOption) *URLTest {
+	urlTest := &URLTest{
+		GroupBase: NewGroupBase(GroupBaseOption{
+			outbound.BaseOption{
+				Name:        option.Name,
+				Type:        C.URLTest,
+				Interface:   option.Interface,
+				RoutingMark: option.RoutingMark,
+			},
+
+			option.Filter,
+			option.ExcludeFilter,
+			option.ExcludeType,
+			providers,
+		}),
+		fastSingle:     singledo.NewSingle[C.Proxy](time.Second * 10),
+		disableUDP:     option.DisableUDP,
+		testUrl:        option.URL,
+		expectedStatus: option.ExpectedStatus,
+	}
+
+	for _, option := range options {
+		option(urlTest)
+	}
+
+	return urlTest
+}

adapter/outboundgroup/util.go

@@ -0,0 +1,6 @@
+package outboundgroup
+
+type SelectAble interface {
+	Set(string) error
+	ForceSet(name string)
+}

adapter/parser.go

@@ -0,0 +1,153 @@
+package adapter
+
+import (
+	"fmt"
+
+	tlsC "github.com/Dreamacro/clash/component/tls"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/structure"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+func ParseProxy(mapping map[string]any) (C.Proxy, error) {
+	decoder := structure.NewDecoder(structure.Option{TagName: "proxy", WeaklyTypedInput: true, KeyReplacer: structure.DefaultKeyReplacer})
+	proxyType, existType := mapping["type"].(string)
+	if !existType {
+		return nil, fmt.Errorf("missing type")
+	}
+
+	var (
+		proxy C.ProxyAdapter
+		err   error
+	)
+	switch proxyType {
+	case "ss":
+		ssOption := &outbound.ShadowSocksOption{ClientFingerprint: tlsC.GetGlobalFingerprint()}
+		err = decoder.Decode(mapping, ssOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewShadowSocks(*ssOption)
+	case "ssr":
+		ssrOption := &outbound.ShadowSocksROption{}
+		err = decoder.Decode(mapping, ssrOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewShadowSocksR(*ssrOption)
+	case "socks5":
+		socksOption := &outbound.Socks5Option{}
+		err = decoder.Decode(mapping, socksOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewSocks5(*socksOption)
+	case "http":
+		httpOption := &outbound.HttpOption{}
+		err = decoder.Decode(mapping, httpOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewHttp(*httpOption)
+	case "vmess":
+		vmessOption := &outbound.VmessOption{
+			HTTPOpts: outbound.HTTPOptions{
+				Method: "GET",
+				Path:   []string{"/"},
+			},
+			ClientFingerprint: tlsC.GetGlobalFingerprint(),
+		}
+
+		err = decoder.Decode(mapping, vmessOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewVmess(*vmessOption)
+	case "vless":
+		vlessOption := &outbound.VlessOption{ClientFingerprint: tlsC.GetGlobalFingerprint()}
+		err = decoder.Decode(mapping, vlessOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewVless(*vlessOption)
+	case "snell":
+		snellOption := &outbound.SnellOption{}
+		err = decoder.Decode(mapping, snellOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewSnell(*snellOption)
+	case "trojan":
+		trojanOption := &outbound.TrojanOption{ClientFingerprint: tlsC.GetGlobalFingerprint()}
+		err = decoder.Decode(mapping, trojanOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewTrojan(*trojanOption)
+	case "hysteria":
+		hyOption := &outbound.HysteriaOption{}
+		err = decoder.Decode(mapping, hyOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewHysteria(*hyOption)
+	case "hysteria2":
+		hyOption := &outbound.Hysteria2Option{}
+		err = decoder.Decode(mapping, hyOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewHysteria2(*hyOption)
+	case "wireguard":
+		wgOption := &outbound.WireGuardOption{}
+		err = decoder.Decode(mapping, wgOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewWireGuard(*wgOption)
+	case "tuic":
+		tuicOption := &outbound.TuicOption{}
+		err = decoder.Decode(mapping, tuicOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewTuic(*tuicOption)
+	case "direct":
+		directOption := &outbound.DirectOption{}
+		err = decoder.Decode(mapping, directOption)
+		if err != nil {
+			break
+		}
+		proxy = outbound.NewDirectWithOption(*directOption)
+	case "reject":
+		rejectOption := &outbound.RejectOption{}
+		err = decoder.Decode(mapping, rejectOption)
+		if err != nil {
+			break
+		}
+		proxy = outbound.NewRejectWithOption(*rejectOption)
+	default:
+		return nil, fmt.Errorf("unsupport proxy type: %s", proxyType)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if muxMapping, muxExist := mapping["smux"].(map[string]any); muxExist {
+		muxOption := &outbound.SingMuxOption{}
+		err = decoder.Decode(muxMapping, muxOption)
+		if err != nil {
+			return nil, err
+		}
+		if muxOption.Enabled {
+			proxy, err = outbound.NewSingMux(*muxOption, proxy, proxy.(outbound.ProxyBase))
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	return NewProxy(proxy), nil
+}

adapter/provider/healthcheck.go

@@ -0,0 +1,245 @@
+package provider
+
+import (
+	"context"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/Dreamacro/clash/common/atomic"
+	"github.com/Dreamacro/clash/common/batch"
+	"github.com/Dreamacro/clash/common/singledo"
+	"github.com/Dreamacro/clash/common/utils"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+
+	"github.com/dlclark/regexp2"
+)
+
+const (
+	defaultURLTestTimeout = time.Second * 5
+	defaultURLTestURL     = "https://www.gstatic.com/generate_204"
+)
+
+type HealthCheckOption struct {
+	URL      string
+	Interval uint
+}
+
+type extraOption struct {
+	expectedStatus utils.IntRanges[uint16]
+	filters        map[string]struct{}
+}
+
+type HealthCheck struct {
+	url            string
+	extra          map[string]*extraOption
+	mu             sync.Mutex
+	started        atomic.Bool
+	proxies        []C.Proxy
+	interval       time.Duration
+	lazy           bool
+	expectedStatus utils.IntRanges[uint16]
+	lastTouch      atomic.TypedValue[time.Time]
+	done           chan struct{}
+	singleDo       *singledo.Single[struct{}]
+}
+
+func (hc *HealthCheck) process() {
+	if hc.started.Load() {
+		log.Warnln("Skip start health check timer due to it's started")
+		return
+	}
+
+	ticker := time.NewTicker(hc.interval)
+	hc.start()
+	for {
+		select {
+		case <-ticker.C:
+			lastTouch := hc.lastTouch.Load()
+			since := time.Since(lastTouch)
+			if !hc.lazy || since < hc.interval {
+				hc.check()
+			} else {
+				log.Debugln("Skip once health check because we are lazy")
+			}
+		case <-hc.done:
+			ticker.Stop()
+			hc.stop()
+			return
+		}
+	}
+}
+
+func (hc *HealthCheck) setProxy(proxies []C.Proxy) {
+	hc.proxies = proxies
+}
+
+func (hc *HealthCheck) registerHealthCheckTask(url string, expectedStatus utils.IntRanges[uint16], filter string, interval uint) {
+	url = strings.TrimSpace(url)
+	if len(url) == 0 || url == hc.url {
+		log.Debugln("ignore invalid health check url: %s", url)
+		return
+	}
+
+	hc.mu.Lock()
+	defer hc.mu.Unlock()
+
+	// if the provider has not set up health checks, then modify it to be the same as the group's interval
+	if hc.interval == 0 {
+		hc.interval = time.Duration(interval) * time.Second
+	}
+
+	if hc.extra == nil {
+		hc.extra = make(map[string]*extraOption)
+	}
+
+	// prioritize the use of previously registered configurations, especially those from provider
+	if _, ok := hc.extra[url]; ok {
+		// provider default health check does not set filter
+		if url != hc.url && len(filter) != 0 {
+			splitAndAddFiltersToExtra(filter, hc.extra[url])
+		}
+
+		log.Debugln("health check url: %s exists", url)
+		return
+	}
+
+	// due to the time-consuming nature of health checks, a maximum of defaultMaxTestURLNum URLs can be set for testing
+	if len(hc.extra) > C.DefaultMaxHealthCheckUrlNum {
+		log.Debugln("skip add url: %s to health check because it has reached the maximum limit: %d", url, C.DefaultMaxHealthCheckUrlNum)
+		return
+	}
+
+	option := &extraOption{filters: map[string]struct{}{}, expectedStatus: expectedStatus}
+	splitAndAddFiltersToExtra(filter, option)
+	hc.extra[url] = option
+
+	if hc.auto() && !hc.started.Load() {
+		go hc.process()
+	}
+}
+
+func splitAndAddFiltersToExtra(filter string, option *extraOption) {
+	filter = strings.TrimSpace(filter)
+	if len(filter) != 0 {
+		for _, regex := range strings.Split(filter, "`") {
+			regex = strings.TrimSpace(regex)
+			if len(regex) != 0 {
+				option.filters[regex] = struct{}{}
+			}
+		}
+	}
+}
+
+func (hc *HealthCheck) auto() bool {
+	return hc.interval != 0
+}
+
+func (hc *HealthCheck) touch() {
+	hc.lastTouch.Store(time.Now())
+}
+
+func (hc *HealthCheck) start() {
+	hc.started.Store(true)
+}
+
+func (hc *HealthCheck) stop() {
+	hc.started.Store(false)
+}
+
+func (hc *HealthCheck) check() {
+
+	if len(hc.proxies) == 0 {
+		return
+	}
+
+	_, _, _ = hc.singleDo.Do(func() (struct{}, error) {
+		id := utils.NewUUIDV4().String()
+		log.Debugln("Start New Health Checking {%s}", id)
+		b, _ := batch.New[bool](context.Background(), batch.WithConcurrencyNum[bool](10))
+
+		// execute default health check
+		option := &extraOption{filters: nil, expectedStatus: hc.expectedStatus}
+		hc.execute(b, hc.url, id, option)
+
+		// execute extra health check
+		if len(hc.extra) != 0 {
+			for url, option := range hc.extra {
+				hc.execute(b, url, id, option)
+			}
+		}
+		b.Wait()
+		log.Debugln("Finish A Health Checking {%s}", id)
+		return struct{}{}, nil
+	})
+}
+
+func (hc *HealthCheck) execute(b *batch.Batch[bool], url, uid string, option *extraOption) {
+	url = strings.TrimSpace(url)
+	if len(url) == 0 {
+		log.Debugln("Health Check has been skipped due to testUrl is empty, {%s}", uid)
+		return
+	}
+
+	var filterReg *regexp2.Regexp
+	var store = C.OriginalHistory
+	var expectedStatus utils.IntRanges[uint16]
+	if option != nil {
+		if url != hc.url {
+			store = C.ExtraHistory
+		}
+
+		expectedStatus = option.expectedStatus
+		if len(option.filters) != 0 {
+			filters := make([]string, 0, len(option.filters))
+			for filter := range option.filters {
+				filters = append(filters, filter)
+			}
+
+			filterReg = regexp2.MustCompile(strings.Join(filters, "|"), 0)
+		}
+	}
+
+	for _, proxy := range hc.proxies {
+		// skip proxies that do not require health check
+		if filterReg != nil {
+			if match, _ := filterReg.FindStringMatch(proxy.Name()); match == nil {
+				continue
+			}
+		}
+
+		p := proxy
+		b.Go(p.Name(), func() (bool, error) {
+			ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
+			defer cancel()
+			log.Debugln("Health Checking, proxy: %s, url: %s, id: {%s}", p.Name(), url, uid)
+			_, _ = p.URLTest(ctx, url, expectedStatus, store)
+			log.Debugln("Health Checked, proxy: %s, url: %s, alive: %t, delay: %d ms uid: {%s}", p.Name(), url, p.AliveForTestUrl(url), p.LastDelayForTestUrl(url), uid)
+			return false, nil
+		})
+	}
+}
+
+func (hc *HealthCheck) close() {
+	hc.done <- struct{}{}
+}
+
+func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool, expectedStatus utils.IntRanges[uint16]) *HealthCheck {
+	if len(url) == 0 {
+		interval = 0
+		expectedStatus = nil
+		url = defaultURLTestURL
+	}
+
+	return &HealthCheck{
+		proxies:        proxies,
+		url:            url,
+		extra:          map[string]*extraOption{},
+		interval:       time.Duration(interval) * time.Second,
+		lazy:           lazy,
+		expectedStatus: expectedStatus,
+		done:           make(chan struct{}, 1),
+		singleDo:       singledo.NewSingle[struct{}](time.Second),
+	}
+}

adapter/provider/parser.go

@@ -0,0 +1,87 @@
+package provider
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/common/utils"
+	"github.com/Dreamacro/clash/component/resource"
+	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
+)
+
+var (
+	errVehicleType = errors.New("unsupport vehicle type")
+	errSubPath     = errors.New("path is not subpath of home directory")
+)
+
+type healthCheckSchema struct {
+	Enable         bool   `provider:"enable"`
+	URL            string `provider:"url"`
+	Interval       int    `provider:"interval"`
+	Lazy           bool   `provider:"lazy,omitempty"`
+	ExpectedStatus string `provider:"expected-status,omitempty"`
+}
+
+type proxyProviderSchema struct {
+	Type          string            `provider:"type"`
+	Path          string            `provider:"path,omitempty"`
+	URL           string            `provider:"url,omitempty"`
+	Interval      int               `provider:"interval,omitempty"`
+	Filter        string            `provider:"filter,omitempty"`
+	ExcludeFilter string            `provider:"exclude-filter,omitempty"`
+	ExcludeType   string            `provider:"exclude-type,omitempty"`
+	DialerProxy   string            `provider:"dialer-proxy,omitempty"`
+	HealthCheck   healthCheckSchema `provider:"health-check,omitempty"`
+}
+
+func ParseProxyProvider(name string, mapping map[string]any) (types.ProxyProvider, error) {
+	decoder := structure.NewDecoder(structure.Option{TagName: "provider", WeaklyTypedInput: true})
+
+	schema := &proxyProviderSchema{
+		HealthCheck: healthCheckSchema{
+			Lazy: true,
+		},
+	}
+	if err := decoder.Decode(mapping, schema); err != nil {
+		return nil, err
+	}
+
+	expectedStatus, err := utils.NewIntRanges[uint16](schema.HealthCheck.ExpectedStatus)
+	if err != nil {
+		return nil, err
+	}
+
+	var hcInterval uint
+	if schema.HealthCheck.Enable {
+		hcInterval = uint(schema.HealthCheck.Interval)
+	}
+	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval, schema.HealthCheck.Lazy, expectedStatus)
+
+	var vehicle types.Vehicle
+	switch schema.Type {
+	case "file":
+		path := C.Path.Resolve(schema.Path)
+		vehicle = resource.NewFileVehicle(path)
+	case "http":
+		if schema.Path != "" {
+			path := C.Path.Resolve(schema.Path)
+			vehicle = resource.NewHTTPVehicle(schema.URL, path)
+		} else {
+			path := C.Path.GetPathByHash("proxies", schema.URL)
+			vehicle = resource.NewHTTPVehicle(schema.URL, path)
+		}
+	default:
+		return nil, fmt.Errorf("%w: %s", errVehicleType, schema.Type)
+	}
+
+	interval := time.Duration(uint(schema.Interval)) * time.Second
+	filter := schema.Filter
+	excludeFilter := schema.ExcludeFilter
+	excludeType := schema.ExcludeType
+	dialerProxy := schema.DialerProxy
+
+	return NewProxySetProvider(name, interval, filter, excludeFilter, excludeType, dialerProxy, vehicle, hc)
+}

adapter/provider/patch.go

@@ -0,0 +1,34 @@
+package provider
+
+import (
+	"time"
+)
+
+var (
+	suspended bool
+)
+
+type UpdatableProvider interface {
+	UpdatedAt() time.Time
+}
+
+func (pp *proxySetProvider) UpdatedAt() time.Time {
+	return pp.Fetcher.UpdatedAt
+}
+
+func (pp *proxySetProvider) Close() error {
+	pp.healthCheck.close()
+	pp.Fetcher.Destroy()
+
+	return nil
+}
+
+func (cp *compatibleProvider) Close() error {
+	cp.healthCheck.close()
+
+	return nil
+}
+
+func Suspend(s bool) {
+	suspended = s
+}

adapter/provider/provider.go

@@ -0,0 +1,379 @@
+package provider
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter"
+	"github.com/Dreamacro/clash/common/convert"
+	"github.com/Dreamacro/clash/common/utils"
+	clashHttp "github.com/Dreamacro/clash/component/http"
+	"github.com/Dreamacro/clash/component/resource"
+	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
+	"github.com/Dreamacro/clash/log"
+	"github.com/Dreamacro/clash/tunnel/statistic"
+
+	"github.com/dlclark/regexp2"
+	"gopkg.in/yaml.v3"
+)
+
+const (
+	ReservedName = "default"
+)
+
+type ProxySchema struct {
+	Proxies []map[string]any `yaml:"proxies"`
+}
+
+// ProxySetProvider for auto gc
+type ProxySetProvider struct {
+	*proxySetProvider
+}
+
+type proxySetProvider struct {
+	*resource.Fetcher[[]C.Proxy]
+	proxies          []C.Proxy
+	healthCheck      *HealthCheck
+	version          uint32
+	subscriptionInfo *SubscriptionInfo
+}
+
+func (pp *proxySetProvider) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]any{
+		"name":             pp.Name(),
+		"type":             pp.Type().String(),
+		"vehicleType":      pp.VehicleType().String(),
+		"proxies":          pp.Proxies(),
+		"testUrl":          pp.healthCheck.url,
+		"updatedAt":        pp.UpdatedAt,
+		"subscriptionInfo": pp.subscriptionInfo,
+	})
+}
+
+func (pp *proxySetProvider) Version() uint32 {
+	return pp.version
+}
+
+func (pp *proxySetProvider) Name() string {
+	return pp.Fetcher.Name()
+}
+
+func (pp *proxySetProvider) HealthCheck() {
+	pp.healthCheck.check()
+}
+
+func (pp *proxySetProvider) Update() error {
+	elm, same, err := pp.Fetcher.Update()
+	if err == nil && !same {
+		pp.OnUpdate(elm)
+	}
+	return err
+}
+
+func (pp *proxySetProvider) Initial() error {
+	elm, err := pp.Fetcher.Initial()
+	if err != nil {
+		return err
+	}
+	pp.OnUpdate(elm)
+	pp.getSubscriptionInfo()
+	pp.closeAllConnections()
+	return nil
+}
+
+func (pp *proxySetProvider) Type() types.ProviderType {
+	return types.Proxy
+}
+
+func (pp *proxySetProvider) Proxies() []C.Proxy {
+	return pp.proxies
+}
+
+func (pp *proxySetProvider) Touch() {
+	pp.healthCheck.touch()
+}
+
+func (pp *proxySetProvider) RegisterHealthCheckTask(url string, expectedStatus utils.IntRanges[uint16], filter string, interval uint) {
+	pp.healthCheck.registerHealthCheckTask(url, expectedStatus, filter, interval)
+}
+
+func (pp *proxySetProvider) setProxies(proxies []C.Proxy) {
+	pp.proxies = proxies
+	pp.healthCheck.setProxy(proxies)
+	if pp.healthCheck.auto() {
+		go pp.healthCheck.check()
+	}
+}
+
+func (pp *proxySetProvider) getSubscriptionInfo() {
+	if pp.VehicleType() != types.HTTP {
+		return
+	}
+	go func() {
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*90)
+		defer cancel()
+		resp, err := clashHttp.HttpRequest(ctx, pp.Vehicle().(*resource.HTTPVehicle).Url(),
+			http.MethodGet, http.Header{"User-Agent": {"clash"}}, nil)
+		if err != nil {
+			return
+		}
+		defer resp.Body.Close()
+
+		userInfoStr := strings.TrimSpace(resp.Header.Get("subscription-userinfo"))
+		if userInfoStr == "" {
+			resp2, err := clashHttp.HttpRequest(ctx, pp.Vehicle().(*resource.HTTPVehicle).Url(),
+				http.MethodGet, http.Header{"User-Agent": {"Quantumultx"}}, nil)
+			if err != nil {
+				return
+			}
+			defer resp2.Body.Close()
+			userInfoStr = strings.TrimSpace(resp2.Header.Get("subscription-userinfo"))
+			if userInfoStr == "" {
+				return
+			}
+		}
+		pp.subscriptionInfo, err = NewSubscriptionInfo(userInfoStr)
+		if err != nil {
+			log.Warnln("[Provider] get subscription-userinfo: %e", err)
+		}
+	}()
+}
+
+func (pp *proxySetProvider) closeAllConnections() {
+	statistic.DefaultManager.Range(func(c statistic.Tracker) bool {
+		for _, chain := range c.Chains() {
+			if chain == pp.Name() {
+				_ = c.Close()
+				break
+			}
+		}
+		return true
+	})
+}
+
+func stopProxyProvider(pd *ProxySetProvider) {
+	pd.healthCheck.close()
+	_ = pd.Fetcher.Destroy()
+}
+
+func NewProxySetProvider(name string, interval time.Duration, filter string, excludeFilter string, excludeType string, dialerProxy string, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) {
+	excludeFilterReg, err := regexp2.Compile(excludeFilter, 0)
+	if err != nil {
+		return nil, fmt.Errorf("invalid excludeFilter regex: %w", err)
+	}
+	var excludeTypeArray []string
+	if excludeType != "" {
+		excludeTypeArray = strings.Split(excludeType, "|")
+	}
+
+	var filterRegs []*regexp2.Regexp
+	for _, filter := range strings.Split(filter, "`") {
+		filterReg, err := regexp2.Compile(filter, 0)
+		if err != nil {
+			return nil, fmt.Errorf("invalid filter regex: %w", err)
+		}
+		filterRegs = append(filterRegs, filterReg)
+	}
+
+	if hc.auto() {
+		go hc.process()
+	}
+
+	pd := &proxySetProvider{
+		proxies:     []C.Proxy{},
+		healthCheck: hc,
+	}
+
+	fetcher := resource.NewFetcher[[]C.Proxy](name, interval, vehicle, proxiesParseAndFilter(filter, excludeFilter, excludeTypeArray, filterRegs, excludeFilterReg, dialerProxy), proxiesOnUpdate(pd))
+	pd.Fetcher = fetcher
+	wrapper := &ProxySetProvider{pd}
+	runtime.SetFinalizer(wrapper, stopProxyProvider)
+	return wrapper, nil
+}
+
+// CompatibleProvider for auto gc
+type CompatibleProvider struct {
+	*compatibleProvider
+}
+
+type compatibleProvider struct {
+	name        string
+	healthCheck *HealthCheck
+	proxies     []C.Proxy
+	version     uint32
+}
+
+func (cp *compatibleProvider) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]any{
+		"name":        cp.Name(),
+		"type":        cp.Type().String(),
+		"vehicleType": cp.VehicleType().String(),
+		"proxies":     cp.Proxies(),
+		"testUrl":     cp.healthCheck.url,
+	})
+}
+
+func (cp *compatibleProvider) Version() uint32 {
+	return cp.version
+}
+
+func (cp *compatibleProvider) Name() string {
+	return cp.name
+}
+
+func (cp *compatibleProvider) HealthCheck() {
+	cp.healthCheck.check()
+}
+
+func (cp *compatibleProvider) Update() error {
+	return nil
+}
+
+func (cp *compatibleProvider) Initial() error {
+	return nil
+}
+
+func (cp *compatibleProvider) VehicleType() types.VehicleType {
+	return types.Compatible
+}
+
+func (cp *compatibleProvider) Type() types.ProviderType {
+	return types.Proxy
+}
+
+func (cp *compatibleProvider) Proxies() []C.Proxy {
+	return cp.proxies
+}
+
+func (cp *compatibleProvider) Touch() {
+	cp.healthCheck.touch()
+}
+
+func (cp *compatibleProvider) RegisterHealthCheckTask(url string, expectedStatus utils.IntRanges[uint16], filter string, interval uint) {
+	cp.healthCheck.registerHealthCheckTask(url, expectedStatus, filter, interval)
+}
+
+func stopCompatibleProvider(pd *CompatibleProvider) {
+	pd.healthCheck.close()
+}
+
+func NewCompatibleProvider(name string, proxies []C.Proxy, hc *HealthCheck) (*CompatibleProvider, error) {
+	if len(proxies) == 0 {
+		return nil, errors.New("provider need one proxy at least")
+	}
+
+	if hc.auto() {
+		go hc.process()
+	}
+
+	pd := &compatibleProvider{
+		name:        name,
+		proxies:     proxies,
+		healthCheck: hc,
+	}
+
+	wrapper := &CompatibleProvider{pd}
+	runtime.SetFinalizer(wrapper, stopCompatibleProvider)
+	return wrapper, nil
+}
+
+func proxiesOnUpdate(pd *proxySetProvider) func([]C.Proxy) {
+	return func(elm []C.Proxy) {
+		pd.setProxies(elm)
+		pd.version += 1
+		pd.getSubscriptionInfo()
+	}
+}
+
+func proxiesParseAndFilter(filter string, excludeFilter string, excludeTypeArray []string, filterRegs []*regexp2.Regexp, excludeFilterReg *regexp2.Regexp, dialerProxy string) resource.Parser[[]C.Proxy] {
+	return func(buf []byte) ([]C.Proxy, error) {
+		schema := &ProxySchema{}
+
+		if err := yaml.Unmarshal(buf, schema); err != nil {
+			proxies, err1 := convert.ConvertsV2Ray(buf)
+			if err1 != nil {
+				return nil, fmt.Errorf("%w, %w", err, err1)
+			}
+			schema.Proxies = proxies
+		}
+
+		if schema.Proxies == nil {
+			return nil, errors.New("file must have a `proxies` field")
+		}
+
+		proxies := []C.Proxy{}
+		proxiesSet := map[string]struct{}{}
+		for _, filterReg := range filterRegs {
+			for idx, mapping := range schema.Proxies {
+				if nil != excludeTypeArray && len(excludeTypeArray) > 0 {
+					mType, ok := mapping["type"]
+					if !ok {
+						continue
+					}
+					pType, ok := mType.(string)
+					if !ok {
+						continue
+					}
+					flag := false
+					for i := range excludeTypeArray {
+						if strings.EqualFold(pType, excludeTypeArray[i]) {
+							flag = true
+							break
+						}
+
+					}
+					if flag {
+						continue
+					}
+
+				}
+				mName, ok := mapping["name"]
+				if !ok {
+					continue
+				}
+				name, ok := mName.(string)
+				if !ok {
+					continue
+				}
+				if len(excludeFilter) > 0 {
+					if mat, _ := excludeFilterReg.FindStringMatch(name); mat != nil {
+						continue
+					}
+				}
+				if len(filter) > 0 {
+					if mat, _ := filterReg.FindStringMatch(name); mat == nil {
+						continue
+					}
+				}
+				if _, ok := proxiesSet[name]; ok {
+					continue
+				}
+				if len(dialerProxy) > 0 {
+					mapping["dialer-proxy"] = dialerProxy
+				}
+				proxy, err := adapter.ParseProxy(mapping)
+				if err != nil {
+					return nil, fmt.Errorf("proxy %d error: %w", idx, err)
+				}
+				proxiesSet[name] = struct{}{}
+				proxies = append(proxies, proxy)
+			}
+		}
+
+		if len(proxies) == 0 {
+			if len(filter) > 0 {
+				return nil, errors.New("doesn't match any proxy, please check your filter")
+			}
+			return nil, errors.New("file doesn't have any proxy")
+		}
+
+		return proxies, nil
+	}
+}

adapter/provider/subscription_info.go

@@ -0,0 +1,35 @@
+package provider
+
+import (
+	"strconv"
+	"strings"
+)
+
+type SubscriptionInfo struct {
+	Upload   int64
+	Download int64
+	Total    int64
+	Expire   int64
+}
+
+func NewSubscriptionInfo(userinfo string) (si *SubscriptionInfo, err error) {
+	userinfo = strings.ToLower(userinfo)
+	userinfo = strings.ReplaceAll(userinfo, " ", "")
+	si = new(SubscriptionInfo)
+	for _, field := range strings.Split(userinfo, ";") {
+		switch name, value, _ := strings.Cut(field, "="); name {
+		case "upload":
+			si.Upload, err = strconv.ParseInt(value, 10, 64)
+		case "download":
+			si.Download, err = strconv.ParseInt(value, 10, 64)
+		case "total":
+			si.Total, err = strconv.ParseInt(value, 10, 64)
+		case "expire":
+			si.Expire, err = strconv.ParseInt(value, 10, 64)
+		}
+		if err != nil {
+			return
+		}
+	}
+	return
+}

adapters/inbound/http.go

@@ -1,60 +0,0 @@
-package inbound
-
-import (
-	"net"
-	"net/http"
-	"strings"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-// HTTPAdapter is a adapter for HTTP connection
-type HTTPAdapter struct {
-	net.Conn
-	metadata *C.Metadata
-	R        *http.Request
-}
-
-// Metadata return destination metadata
-func (h *HTTPAdapter) Metadata() *C.Metadata {
-	return h.metadata
-}
-
-// NewHTTP is HTTPAdapter generator
-func NewHTTP(request *http.Request, conn net.Conn) *HTTPAdapter {
-	metadata := parseHTTPAddr(request)
-	metadata.Type = C.HTTP
-	if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
-		metadata.SrcIP = ip
-		metadata.SrcPort = port
-	}
-	return &HTTPAdapter{
-		metadata: metadata,
-		R:        request,
-		Conn:     conn,
-	}
-}
-
-// RemoveHopByHopHeaders remove hop-by-hop header
-func RemoveHopByHopHeaders(header http.Header) {
-	// Strip hop-by-hop header based on RFC:
-	// http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.1
-	// https://www.mnot.net/blog/2011/07/11/what_proxies_must_do
-
-	header.Del("Proxy-Connection")
-	header.Del("Proxy-Authenticate")
-	header.Del("Proxy-Authorization")
-	header.Del("TE")
-	header.Del("Trailers")
-	header.Del("Transfer-Encoding")
-	header.Del("Upgrade")
-
-	connections := header.Get("Connection")
-	header.Del("Connection")
-	if len(connections) == 0 {
-		return
-	}
-	for _, h := range strings.Split(connections, ",") {
-		header.Del(strings.TrimSpace(h))
-	}
-}

adapters/inbound/https.go

@@ -1,22 +0,0 @@
-package inbound
-
-import (
-	"net"
-	"net/http"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-// NewHTTPS is HTTPAdapter generator
-func NewHTTPS(request *http.Request, conn net.Conn) *SocketAdapter {
-	metadata := parseHTTPAddr(request)
-	metadata.Type = C.HTTPCONNECT
-	if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
-		metadata.SrcIP = ip
-		metadata.SrcPort = port
-	}
-	return &SocketAdapter{
-		metadata: metadata,
-		Conn:     conn,
-	}
-}

adapters/inbound/packet.go

@@ -1,33 +0,0 @@
-package inbound
-
-import (
-	"github.com/Dreamacro/clash/component/socks5"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-// PacketAdapter is a UDP Packet adapter for socks/redir/tun
-type PacketAdapter struct {
-	C.UDPPacket
-	metadata *C.Metadata
-}
-
-// Metadata returns destination metadata
-func (s *PacketAdapter) Metadata() *C.Metadata {
-	return s.metadata
-}
-
-// NewPacket is PacketAdapter generator
-func NewPacket(target socks5.Addr, packet C.UDPPacket, source C.Type, netType C.NetWork) *PacketAdapter {
-	metadata := parseSocksAddr(target)
-	metadata.NetWork = netType
-	metadata.Type = source
-	if ip, port, err := parseAddr(packet.LocalAddr().String()); err == nil {
-		metadata.SrcIP = ip
-		metadata.SrcPort = port
-	}
-
-	return &PacketAdapter{
-		UDPPacket: packet,
-		metadata:  metadata,
-	}
-}

adapters/inbound/socket.go

@@ -1,35 +0,0 @@
-package inbound
-
-import (
-	"net"
-
-	"github.com/Dreamacro/clash/component/socks5"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-// SocketAdapter is a adapter for socks and redir connection
-type SocketAdapter struct {
-	net.Conn
-	metadata *C.Metadata
-}
-
-// Metadata return destination metadata
-func (s *SocketAdapter) Metadata() *C.Metadata {
-	return s.metadata
-}
-
-// NewSocket is SocketAdapter generator
-func NewSocket(target socks5.Addr, conn net.Conn, source C.Type, netType C.NetWork) *SocketAdapter {
-	metadata := parseSocksAddr(target)
-	metadata.NetWork = netType
-	metadata.Type = source
-	if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
-		metadata.SrcIP = ip
-		metadata.SrcPort = port
-	}
-
-	return &SocketAdapter{
-		Conn:     conn,
-		metadata: metadata,
-	}
-}

adapters/inbound/util.go

@@ -1,71 +0,0 @@
-package inbound
-
-import (
-	"net"
-	"net/http"
-	"strconv"
-
-	"github.com/Dreamacro/clash/component/socks5"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-func parseSocksAddr(target socks5.Addr) *C.Metadata {
-	metadata := &C.Metadata{
-		AddrType: int(target[0]),
-	}
-
-	switch target[0] {
-	case socks5.AtypDomainName:
-		metadata.Host = string(target[2 : 2+target[1]])
-		metadata.DstPort = strconv.Itoa((int(target[2+target[1]]) << 8) | int(target[2+target[1]+1]))
-	case socks5.AtypIPv4:
-		ip := net.IP(target[1 : 1+net.IPv4len])
-		metadata.DstIP = ip
-		metadata.DstPort = strconv.Itoa((int(target[1+net.IPv4len]) << 8) | int(target[1+net.IPv4len+1]))
-	case socks5.AtypIPv6:
-		ip := net.IP(target[1 : 1+net.IPv6len])
-		metadata.DstIP = ip
-		metadata.DstPort = strconv.Itoa((int(target[1+net.IPv6len]) << 8) | int(target[1+net.IPv6len+1]))
-	}
-
-	return metadata
-}
-
-func parseHTTPAddr(request *http.Request) *C.Metadata {
-	host := request.URL.Hostname()
-	port := request.URL.Port()
-	if port == "" {
-		port = "80"
-	}
-
-	metadata := &C.Metadata{
-		NetWork:  C.TCP,
-		AddrType: C.AtypDomainName,
-		Host:     host,
-		DstIP:    nil,
-		DstPort:  port,
-	}
-
-	ip := net.ParseIP(host)
-	if ip != nil {
-		switch {
-		case ip.To4() == nil:
-			metadata.AddrType = C.AtypIPv6
-		default:
-			metadata.AddrType = C.AtypIPv4
-		}
-		metadata.DstIP = ip
-	}
-
-	return metadata
-}
-
-func parseAddr(addr string) (net.IP, string, error) {
-	host, port, err := net.SplitHostPort(addr)
-	if err != nil {
-		return nil, "", err
-	}
-
-	ip := net.ParseIP(host)
-	return ip, port, nil
-}

adapters/outbound/base.go

@@ -1,204 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"net"
-	"net/http"
-	"time"
-
-	"github.com/Dreamacro/clash/common/queue"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-var (
-	defaultURLTestTimeout = time.Second * 5
-)
-
-type Base struct {
-	name string
-	tp   C.AdapterType
-	udp  bool
-}
-
-func (b *Base) Name() string {
-	return b.name
-}
-
-func (b *Base) Type() C.AdapterType {
-	return b.tp
-}
-
-func (b *Base) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	return nil, nil, errors.New("no support")
-}
-
-func (b *Base) SupportUDP() bool {
-	return b.udp
-}
-
-func (b *Base) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": b.Type().String(),
-	})
-}
-
-func NewBase(name string, tp C.AdapterType, udp bool) *Base {
-	return &Base{name, tp, udp}
-}
-
-type conn struct {
-	net.Conn
-	chain C.Chain
-}
-
-func (c *conn) Chains() C.Chain {
-	return c.chain
-}
-
-func (c *conn) AppendToChains(a C.ProxyAdapter) {
-	c.chain = append(c.chain, a.Name())
-}
-
-func newConn(c net.Conn, a C.ProxyAdapter) C.Conn {
-	return &conn{c, []string{a.Name()}}
-}
-
-type packetConn struct {
-	net.PacketConn
-	chain C.Chain
-}
-
-func (c *packetConn) Chains() C.Chain {
-	return c.chain
-}
-
-func (c *packetConn) AppendToChains(a C.ProxyAdapter) {
-	c.chain = append(c.chain, a.Name())
-}
-
-func newPacketConn(c net.PacketConn, a C.ProxyAdapter) C.PacketConn {
-	return &packetConn{c, []string{a.Name()}}
-}
-
-type Proxy struct {
-	C.ProxyAdapter
-	history *queue.Queue
-	alive   bool
-}
-
-func (p *Proxy) Alive() bool {
-	return p.alive
-}
-
-func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	return p.DialContext(ctx, metadata)
-}
-
-func (p *Proxy) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	conn, err := p.ProxyAdapter.DialContext(ctx, metadata)
-	if err != nil {
-		p.alive = false
-	}
-	return conn, err
-}
-
-func (p *Proxy) DelayHistory() []C.DelayHistory {
-	queue := p.history.Copy()
-	histories := []C.DelayHistory{}
-	for _, item := range queue {
-		histories = append(histories, item.(C.DelayHistory))
-	}
-	return histories
-}
-
-// LastDelay return last history record. if proxy is not alive, return the max value of uint16.
-func (p *Proxy) LastDelay() (delay uint16) {
-	var max uint16 = 0xffff
-	if !p.alive {
-		return max
-	}
-
-	last := p.history.Last()
-	if last == nil {
-		return max
-	}
-	history := last.(C.DelayHistory)
-	if history.Delay == 0 {
-		return max
-	}
-	return history.Delay
-}
-
-func (p *Proxy) MarshalJSON() ([]byte, error) {
-	inner, err := p.ProxyAdapter.MarshalJSON()
-	if err != nil {
-		return inner, err
-	}
-
-	mapping := map[string]interface{}{}
-	json.Unmarshal(inner, &mapping)
-	mapping["history"] = p.DelayHistory()
-	mapping["name"] = p.Name()
-	return json.Marshal(mapping)
-}
-
-// URLTest get the delay for the specified URL
-func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
-	defer func() {
-		p.alive = err == nil
-		record := C.DelayHistory{Time: time.Now()}
-		if err == nil {
-			record.Delay = t
-		}
-		p.history.Put(record)
-		if p.history.Len() > 10 {
-			p.history.Pop()
-		}
-	}()
-
-	addr, err := urlToMetadata(url)
-	if err != nil {
-		return
-	}
-
-	start := time.Now()
-	instance, err := p.DialContext(ctx, &addr)
-	if err != nil {
-		return
-	}
-	defer instance.Close()
-
-	req, err := http.NewRequest(http.MethodHead, url, nil)
-	if err != nil {
-		return
-	}
-	req = req.WithContext(ctx)
-
-	transport := &http.Transport{
-		Dial: func(string, string) (net.Conn, error) {
-			return instance, nil
-		},
-		// from http.DefaultTransport
-		MaxIdleConns:          100,
-		IdleConnTimeout:       90 * time.Second,
-		TLSHandshakeTimeout:   10 * time.Second,
-		ExpectContinueTimeout: 1 * time.Second,
-	}
-
-	client := http.Client{Transport: transport}
-	resp, err := client.Do(req)
-	if err != nil {
-		return
-	}
-	resp.Body.Close()
-	t = uint16(time.Since(start) / time.Millisecond)
-	return
-}
-
-func NewProxy(adapter C.ProxyAdapter) *Proxy {
-	return &Proxy{adapter, queue.New(10), true}
-}

adapters/outbound/direct.go

@@ -1,49 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"net"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Direct struct {
-	*Base
-}
-
-func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	address := net.JoinHostPort(metadata.Host, metadata.DstPort)
-	if metadata.DstIP != nil {
-		address = net.JoinHostPort(metadata.DstIP.String(), metadata.DstPort)
-	}
-
-	c, err := dialContext(ctx, "tcp", address)
-	if err != nil {
-		return nil, err
-	}
-	tcpKeepAlive(c)
-	return newConn(c, d), nil
-}
-
-func (d *Direct) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	pc, err := net.ListenPacket("udp", "")
-	if err != nil {
-		return nil, nil, err
-	}
-
-	addr, err := resolveUDPAddr("udp", metadata.RemoteAddress())
-	if err != nil {
-		return nil, nil, err
-	}
-	return newPacketConn(pc, d), addr, nil
-}
-
-func NewDirect() *Direct {
-	return &Direct{
-		Base: &Base{
-			name: "DIRECT",
-			tp:   C.Direct,
-			udp:  true,
-		},
-	}
-}

adapters/outbound/http.go

@@ -1,122 +0,0 @@
-package outbound
-
-import (
-	"bufio"
-	"context"
-	"crypto/tls"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"io"
-	"net"
-	"net/http"
-	"net/url"
-	"strconv"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Http struct {
-	*Base
-	addr      string
-	user      string
-	pass      string
-	tlsConfig *tls.Config
-}
-
-type HttpOption struct {
-	Name           string `proxy:"name"`
-	Server         string `proxy:"server"`
-	Port           int    `proxy:"port"`
-	UserName       string `proxy:"username,omitempty"`
-	Password       string `proxy:"password,omitempty"`
-	TLS            bool   `proxy:"tls,omitempty"`
-	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
-}
-
-func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialContext(ctx, "tcp", h.addr)
-	if err == nil && h.tlsConfig != nil {
-		cc := tls.Client(c, h.tlsConfig)
-		err = cc.Handshake()
-		c = cc
-	}
-
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", h.addr, err)
-	}
-	tcpKeepAlive(c)
-	if err := h.shakeHand(metadata, c); err != nil {
-		return nil, err
-	}
-
-	return newConn(c, h), nil
-}
-
-func (h *Http) shakeHand(metadata *C.Metadata, rw io.ReadWriter) error {
-	addr := metadata.RemoteAddress()
-	req := &http.Request{
-		Method: http.MethodConnect,
-		URL: &url.URL{
-			Host: addr,
-		},
-		Host: addr,
-		Header: http.Header{
-			"Proxy-Connection": []string{"Keep-Alive"},
-		},
-	}
-
-	if h.user != "" && h.pass != "" {
-		auth := h.user + ":" + h.pass
-		req.Header.Add("Proxy-Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(auth)))
-	}
-
-	if err := req.Write(rw); err != nil {
-		return err
-	}
-
-	resp, err := http.ReadResponse(bufio.NewReader(rw), req)
-	if err != nil {
-		return err
-	}
-
-	if resp.StatusCode == http.StatusOK {
-		return nil
-	}
-
-	if resp.StatusCode == http.StatusProxyAuthRequired {
-		return errors.New("HTTP need auth")
-	}
-
-	if resp.StatusCode == http.StatusMethodNotAllowed {
-		return errors.New("CONNECT method not allowed by proxy")
-	}
-
-	if resp.StatusCode >= http.StatusInternalServerError {
-		return errors.New(resp.Status)
-	}
-
-	return fmt.Errorf("can not connect remote err code: %d", resp.StatusCode)
-}
-
-func NewHttp(option HttpOption) *Http {
-	var tlsConfig *tls.Config
-	if option.TLS {
-		tlsConfig = &tls.Config{
-			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
-			ServerName:         option.Server,
-		}
-	}
-
-	return &Http{
-		Base: &Base{
-			name: option.Name,
-			tp:   C.Http,
-		},
-		addr:      net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
-		user:      option.UserName,
-		pass:      option.Password,
-		tlsConfig: tlsConfig,
-	}
-}

adapters/outbound/parser.go

@@ -1,64 +0,0 @@
-package outbound
-
-import (
-	"fmt"
-
-	"github.com/Dreamacro/clash/common/structure"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-func ParseProxy(mapping map[string]interface{}) (C.Proxy, error) {
-	decoder := structure.NewDecoder(structure.Option{TagName: "proxy", WeaklyTypedInput: true})
-	proxyType, existType := mapping["type"].(string)
-	if !existType {
-		return nil, fmt.Errorf("Missing type")
-	}
-
-	var proxy C.ProxyAdapter
-	err := fmt.Errorf("Cannot parse")
-	switch proxyType {
-	case "ss":
-		ssOption := &ShadowSocksOption{}
-		err = decoder.Decode(mapping, ssOption)
-		if err != nil {
-			break
-		}
-		proxy, err = NewShadowSocks(*ssOption)
-	case "socks5":
-		socksOption := &Socks5Option{}
-		err = decoder.Decode(mapping, socksOption)
-		if err != nil {
-			break
-		}
-		proxy = NewSocks5(*socksOption)
-	case "http":
-		httpOption := &HttpOption{}
-		err = decoder.Decode(mapping, httpOption)
-		if err != nil {
-			break
-		}
-		proxy = NewHttp(*httpOption)
-	case "vmess":
-		vmessOption := &VmessOption{}
-		err = decoder.Decode(mapping, vmessOption)
-		if err != nil {
-			break
-		}
-		proxy, err = NewVmess(*vmessOption)
-	case "snell":
-		snellOption := &SnellOption{}
-		err = decoder.Decode(mapping, snellOption)
-		if err != nil {
-			break
-		}
-		proxy, err = NewSnell(*snellOption)
-	default:
-		return nil, fmt.Errorf("Unsupport proxy type: %s", proxyType)
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	return NewProxy(proxy), nil
-}

adapters/outbound/reject.go

@@ -1,55 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"io"
-	"net"
-	"time"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Reject struct {
-	*Base
-}
-
-func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	return newConn(&NopConn{}, r), nil
-}
-
-func NewReject() *Reject {
-	return &Reject{
-		Base: &Base{
-			name: "REJECT",
-			tp:   C.Reject,
-		},
-	}
-}
-
-type NopConn struct{}
-
-func (rw *NopConn) Read(b []byte) (int, error) {
-	return 0, io.EOF
-}
-
-func (rw *NopConn) Write(b []byte) (int, error) {
-	return 0, io.EOF
-}
-
-// Close is fake function for net.Conn
-func (rw *NopConn) Close() error { return nil }
-
-// LocalAddr is fake function for net.Conn
-func (rw *NopConn) LocalAddr() net.Addr { return nil }
-
-// RemoteAddr is fake function for net.Conn
-func (rw *NopConn) RemoteAddr() net.Addr { return nil }
-
-// SetDeadline is fake function for net.Conn
-func (rw *NopConn) SetDeadline(time.Time) error { return nil }
-
-// SetReadDeadline is fake function for net.Conn
-func (rw *NopConn) SetReadDeadline(time.Time) error { return nil }
-
-// SetWriteDeadline is fake function for net.Conn
-func (rw *NopConn) SetWriteDeadline(time.Time) error { return nil }

adapters/outbound/shadowsocks.go

@@ -1,213 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"crypto/tls"
-	"encoding/json"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/common/structure"
-	obfs "github.com/Dreamacro/clash/component/simple-obfs"
-	"github.com/Dreamacro/clash/component/socks5"
-	v2rayObfs "github.com/Dreamacro/clash/component/v2ray-plugin"
-	C "github.com/Dreamacro/clash/constant"
-
-	"github.com/Dreamacro/go-shadowsocks2/core"
-)
-
-type ShadowSocks struct {
-	*Base
-	server string
-	cipher core.Cipher
-
-	// obfs
-	obfsMode    string
-	obfsOption  *simpleObfsOption
-	v2rayOption *v2rayObfs.Option
-}
-
-type ShadowSocksOption struct {
-	Name       string                 `proxy:"name"`
-	Server     string                 `proxy:"server"`
-	Port       int                    `proxy:"port"`
-	Password   string                 `proxy:"password"`
-	Cipher     string                 `proxy:"cipher"`
-	UDP        bool                   `proxy:"udp,omitempty"`
-	Plugin     string                 `proxy:"plugin,omitempty"`
-	PluginOpts map[string]interface{} `proxy:"plugin-opts,omitempty"`
-
-	// deprecated when bump to 1.0
-	Obfs     string `proxy:"obfs,omitempty"`
-	ObfsHost string `proxy:"obfs-host,omitempty"`
-}
-
-type simpleObfsOption struct {
-	Mode string `obfs:"mode"`
-	Host string `obfs:"host,omitempty"`
-}
-
-type v2rayObfsOption struct {
-	Mode           string            `obfs:"mode"`
-	Host           string            `obfs:"host,omitempty"`
-	Path           string            `obfs:"path,omitempty"`
-	TLS            bool              `obfs:"tls,omitempty"`
-	Headers        map[string]string `obfs:"headers,omitempty"`
-	SkipCertVerify bool              `obfs:"skip-cert-verify,omitempty"`
-	Mux            bool              `obfs:"mux,omitempty"`
-}
-
-func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialContext(ctx, "tcp", ss.server)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", ss.server, err)
-	}
-	tcpKeepAlive(c)
-	switch ss.obfsMode {
-	case "tls":
-		c = obfs.NewTLSObfs(c, ss.obfsOption.Host)
-	case "http":
-		_, port, _ := net.SplitHostPort(ss.server)
-		c = obfs.NewHTTPObfs(c, ss.obfsOption.Host, port)
-	case "websocket":
-		var err error
-		c, err = v2rayObfs.NewV2rayObfs(c, ss.v2rayOption)
-		if err != nil {
-			return nil, fmt.Errorf("%s connect error: %w", ss.server, err)
-		}
-	}
-	c = ss.cipher.StreamConn(c)
-	_, err = c.Write(serializesSocksAddr(metadata))
-	return newConn(c, ss), err
-}
-
-func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	pc, err := net.ListenPacket("udp", "")
-	if err != nil {
-		return nil, nil, err
-	}
-
-	addr, err := resolveUDPAddr("udp", ss.server)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	targetAddr := socks5.ParseAddr(metadata.RemoteAddress())
-	if targetAddr == nil {
-		return nil, nil, fmt.Errorf("parse address %s error: %s", metadata.String(), metadata.DstPort)
-	}
-
-	pc = ss.cipher.PacketConn(pc)
-	return newPacketConn(&ssUDPConn{PacketConn: pc, rAddr: targetAddr}, ss), addr, nil
-}
-
-func (ss *ShadowSocks) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": ss.Type().String(),
-	})
-}
-
-func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
-	server := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
-	cipher := option.Cipher
-	password := option.Password
-	ciph, err := core.PickCipher(cipher, nil, password)
-	if err != nil {
-		return nil, fmt.Errorf("ss %s initialize error: %w", server, err)
-	}
-
-	var v2rayOption *v2rayObfs.Option
-	var obfsOption *simpleObfsOption
-	obfsMode := ""
-
-	// forward compatibility before 1.0
-	if option.Obfs != "" {
-		obfsMode = option.Obfs
-		obfsOption = &simpleObfsOption{
-			Host: "bing.com",
-		}
-		if option.ObfsHost != "" {
-			obfsOption.Host = option.ObfsHost
-		}
-	}
-
-	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
-	if option.Plugin == "obfs" {
-		opts := simpleObfsOption{Host: "bing.com"}
-		if err := decoder.Decode(option.PluginOpts, &opts); err != nil {
-			return nil, fmt.Errorf("ss %s initialize obfs error: %w", server, err)
-		}
-
-		if opts.Mode != "tls" && opts.Mode != "http" {
-			return nil, fmt.Errorf("ss %s obfs mode error: %s", server, opts.Mode)
-		}
-		obfsMode = opts.Mode
-		obfsOption = &opts
-	} else if option.Plugin == "v2ray-plugin" {
-		opts := v2rayObfsOption{Host: "bing.com", Mux: true}
-		if err := decoder.Decode(option.PluginOpts, &opts); err != nil {
-			return nil, fmt.Errorf("ss %s initialize v2ray-plugin error: %w", server, err)
-		}
-
-		if opts.Mode != "websocket" {
-			return nil, fmt.Errorf("ss %s obfs mode error: %s", server, opts.Mode)
-		}
-		obfsMode = opts.Mode
-
-		var tlsConfig *tls.Config
-		if opts.TLS {
-			tlsConfig = &tls.Config{
-				ServerName:         opts.Host,
-				InsecureSkipVerify: opts.SkipCertVerify,
-				ClientSessionCache: getClientSessionCache(),
-			}
-		}
-		v2rayOption = &v2rayObfs.Option{
-			Host:      opts.Host,
-			Path:      opts.Path,
-			Headers:   opts.Headers,
-			TLSConfig: tlsConfig,
-			Mux:       opts.Mux,
-		}
-	}
-
-	return &ShadowSocks{
-		Base: &Base{
-			name: option.Name,
-			tp:   C.Shadowsocks,
-			udp:  option.UDP,
-		},
-		server: server,
-		cipher: ciph,
-
-		obfsMode:    obfsMode,
-		v2rayOption: v2rayOption,
-		obfsOption:  obfsOption,
-	}, nil
-}
-
-type ssUDPConn struct {
-	net.PacketConn
-	rAddr socks5.Addr
-}
-
-func (uc *ssUDPConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
-	packet, err := socks5.EncodeUDPPacket(uc.rAddr, b)
-	if err != nil {
-		return
-	}
-	return uc.PacketConn.WriteTo(packet[3:], addr)
-}
-
-func (uc *ssUDPConn) ReadFrom(b []byte) (int, net.Addr, error) {
-	n, _, e := uc.PacketConn.ReadFrom(b)
-	addr := socks5.SplitAddr(b[:n])
-	var from net.Addr
-	if e == nil {
-		// Get the source IP/Port of packet.
-		from = addr.UDPAddr()
-	}
-	copy(b, b[len(addr):])
-	return n - len(addr), from, e
-}

adapters/outbound/snell.go

@@ -1,72 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/common/structure"
-	obfs "github.com/Dreamacro/clash/component/simple-obfs"
-	"github.com/Dreamacro/clash/component/snell"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Snell struct {
-	*Base
-	server     string
-	psk        []byte
-	obfsOption *simpleObfsOption
-}
-
-type SnellOption struct {
-	Name     string                 `proxy:"name"`
-	Server   string                 `proxy:"server"`
-	Port     int                    `proxy:"port"`
-	Psk      string                 `proxy:"psk"`
-	ObfsOpts map[string]interface{} `proxy:"obfs-opts,omitempty"`
-}
-
-func (s *Snell) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialContext(ctx, "tcp", s.server)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", s.server, err)
-	}
-	tcpKeepAlive(c)
-	switch s.obfsOption.Mode {
-	case "tls":
-		c = obfs.NewTLSObfs(c, s.obfsOption.Host)
-	case "http":
-		_, port, _ := net.SplitHostPort(s.server)
-		c = obfs.NewHTTPObfs(c, s.obfsOption.Host, port)
-	}
-	c = snell.StreamConn(c, s.psk)
-	port, _ := strconv.Atoi(metadata.DstPort)
-	err = snell.WriteHeader(c, metadata.String(), uint(port))
-	return newConn(c, s), err
-}
-
-func NewSnell(option SnellOption) (*Snell, error) {
-	server := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
-	psk := []byte(option.Psk)
-
-	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
-	obfsOption := &simpleObfsOption{Host: "bing.com"}
-	if err := decoder.Decode(option.ObfsOpts, obfsOption); err != nil {
-		return nil, fmt.Errorf("snell %s initialize obfs error: %w", server, err)
-	}
-
-	if obfsOption.Mode != "tls" && obfsOption.Mode != "http" {
-		return nil, fmt.Errorf("snell %s obfs mode error: %s", server, obfsOption.Mode)
-	}
-
-	return &Snell{
-		Base: &Base{
-			name: option.Name,
-			tp:   C.Snell,
-		},
-		server:     server,
-		psk:        psk,
-		obfsOption: obfsOption,
-	}, nil
-}

adapters/outbound/socks5.go

@@ -1,182 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"crypto/tls"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/component/socks5"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Socks5 struct {
-	*Base
-	addr           string
-	user           string
-	pass           string
-	tls            bool
-	skipCertVerify bool
-	tlsConfig      *tls.Config
-}
-
-type Socks5Option struct {
-	Name           string `proxy:"name"`
-	Server         string `proxy:"server"`
-	Port           int    `proxy:"port"`
-	UserName       string `proxy:"username,omitempty"`
-	Password       string `proxy:"password,omitempty"`
-	TLS            bool   `proxy:"tls,omitempty"`
-	UDP            bool   `proxy:"udp,omitempty"`
-	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
-}
-
-func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialContext(ctx, "tcp", ss.addr)
-
-	if err == nil && ss.tls {
-		cc := tls.Client(c, ss.tlsConfig)
-		err = cc.Handshake()
-		c = cc
-	}
-
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
-	}
-	tcpKeepAlive(c)
-	var user *socks5.User
-	if ss.user != "" {
-		user = &socks5.User{
-			Username: ss.user,
-			Password: ss.pass,
-		}
-	}
-	if _, err := socks5.ClientHandshake(c, serializesSocksAddr(metadata), socks5.CmdConnect, user); err != nil {
-		return nil, err
-	}
-	return newConn(c, ss), nil
-}
-
-func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, _ net.Addr, err error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialContext(ctx, "tcp", ss.addr)
-	if err != nil {
-		err = fmt.Errorf("%s connect error: %w", ss.addr, err)
-		return
-	}
-
-	if ss.tls {
-		cc := tls.Client(c, ss.tlsConfig)
-		err = cc.Handshake()
-		c = cc
-	}
-
-	defer func() {
-		if err != nil {
-			c.Close()
-		}
-	}()
-
-	tcpKeepAlive(c)
-	var user *socks5.User
-	if ss.user != "" {
-		user = &socks5.User{
-			Username: ss.user,
-			Password: ss.pass,
-		}
-	}
-
-	bindAddr, err := socks5.ClientHandshake(c, serializesSocksAddr(metadata), socks5.CmdUDPAssociate, user)
-	if err != nil {
-		err = fmt.Errorf("client hanshake error: %w", err)
-		return
-	}
-
-	addr, err := net.ResolveUDPAddr("udp", bindAddr.String())
-	if err != nil {
-		return
-	}
-
-	targetAddr := socks5.ParseAddr(metadata.RemoteAddress())
-	if targetAddr == nil {
-		return nil, nil, fmt.Errorf("parse address %s error: %s", metadata.String(), metadata.DstPort)
-	}
-
-	pc, err := net.ListenPacket("udp", "")
-	if err != nil {
-		return
-	}
-
-	go func() {
-		io.Copy(ioutil.Discard, c)
-		c.Close()
-		// A UDP association terminates when the TCP connection that the UDP
-		// ASSOCIATE request arrived on terminates. RFC1928
-		pc.Close()
-	}()
-
-	return newPacketConn(&socksUDPConn{PacketConn: pc, rAddr: targetAddr, tcpConn: c}, ss), addr, nil
-}
-
-func NewSocks5(option Socks5Option) *Socks5 {
-	var tlsConfig *tls.Config
-	if option.TLS {
-		tlsConfig = &tls.Config{
-			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
-			ServerName:         option.Server,
-		}
-	}
-
-	return &Socks5{
-		Base: &Base{
-			name: option.Name,
-			tp:   C.Socks5,
-			udp:  option.UDP,
-		},
-		addr:           net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
-		user:           option.UserName,
-		pass:           option.Password,
-		tls:            option.TLS,
-		skipCertVerify: option.SkipCertVerify,
-		tlsConfig:      tlsConfig,
-	}
-}
-
-type socksUDPConn struct {
-	net.PacketConn
-	rAddr   socks5.Addr
-	tcpConn net.Conn
-}
-
-func (uc *socksUDPConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
-	packet, err := socks5.EncodeUDPPacket(uc.rAddr, b)
-	if err != nil {
-		return
-	}
-	return uc.PacketConn.WriteTo(packet, addr)
-}
-
-func (uc *socksUDPConn) ReadFrom(b []byte) (int, net.Addr, error) {
-	n, a, e := uc.PacketConn.ReadFrom(b)
-	if e != nil {
-		return 0, nil, e
-	}
-	addr, payload, err := socks5.DecodeUDPPacket(b)
-	if err != nil {
-		return 0, nil, err
-	}
-	// due to DecodeUDPPacket is mutable, record addr length
-	addrLength := len(addr)
-	copy(b, payload)
-	return n - addrLength - 3, a, nil
-}
-
-func (uc *socksUDPConn) Close() error {
-	uc.tcpConn.Close()
-	return uc.PacketConn.Close()
-}

adapters/outbound/util.go

@@ -1,180 +0,0 @@
-package outbound
-
-import (
-	"bytes"
-	"context"
-	"crypto/tls"
-	"fmt"
-	"net"
-	"net/url"
-	"strconv"
-	"sync"
-	"time"
-
-	"github.com/Dreamacro/clash/component/socks5"
-	C "github.com/Dreamacro/clash/constant"
-	"github.com/Dreamacro/clash/dns"
-)
-
-const (
-	tcpTimeout = 5 * time.Second
-)
-
-var (
-	globalClientSessionCache tls.ClientSessionCache
-	once                     sync.Once
-)
-
-func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
-	u, err := url.Parse(rawURL)
-	if err != nil {
-		return
-	}
-
-	port := u.Port()
-	if port == "" {
-		switch u.Scheme {
-		case "https":
-			port = "443"
-		case "http":
-			port = "80"
-		default:
-			err = fmt.Errorf("%s scheme not Support", rawURL)
-			return
-		}
-	}
-
-	addr = C.Metadata{
-		AddrType: C.AtypDomainName,
-		Host:     u.Hostname(),
-		DstIP:    nil,
-		DstPort:  port,
-	}
-	return
-}
-
-func tcpKeepAlive(c net.Conn) {
-	if tcp, ok := c.(*net.TCPConn); ok {
-		tcp.SetKeepAlive(true)
-		tcp.SetKeepAlivePeriod(30 * time.Second)
-	}
-}
-
-func getClientSessionCache() tls.ClientSessionCache {
-	once.Do(func() {
-		globalClientSessionCache = tls.NewLRUClientSessionCache(128)
-	})
-	return globalClientSessionCache
-}
-
-func serializesSocksAddr(metadata *C.Metadata) []byte {
-	var buf [][]byte
-	aType := uint8(metadata.AddrType)
-	p, _ := strconv.Atoi(metadata.DstPort)
-	port := []byte{uint8(p >> 8), uint8(p & 0xff)}
-	switch metadata.AddrType {
-	case socks5.AtypDomainName:
-		len := uint8(len(metadata.Host))
-		host := []byte(metadata.Host)
-		buf = [][]byte{{aType, len}, host, port}
-	case socks5.AtypIPv4:
-		host := metadata.DstIP.To4()
-		buf = [][]byte{{aType}, host, port}
-	case socks5.AtypIPv6:
-		host := metadata.DstIP.To16()
-		buf = [][]byte{{aType}, host, port}
-	}
-	return bytes.Join(buf, nil)
-}
-
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	host, port, err := net.SplitHostPort(address)
-	if err != nil {
-		return nil, err
-	}
-
-	returned := make(chan struct{})
-	defer close(returned)
-
-	type dialResult struct {
-		net.Conn
-		error
-		resolved bool
-		ipv6     bool
-		done     bool
-	}
-	results := make(chan dialResult)
-	var primary, fallback dialResult
-
-	startRacer := func(ctx context.Context, host string, ipv6 bool) {
-		dialer := net.Dialer{}
-		result := dialResult{ipv6: ipv6, done: true}
-		defer func() {
-			select {
-			case results <- result:
-			case <-returned:
-				if result.Conn != nil {
-					result.Conn.Close()
-				}
-			}
-		}()
-
-		var ip net.IP
-		if ipv6 {
-			ip, result.error = dns.ResolveIPv6(host)
-		} else {
-			ip, result.error = dns.ResolveIPv4(host)
-		}
-		if result.error != nil {
-			return
-		}
-		result.resolved = true
-
-		if ipv6 {
-			result.Conn, result.error = dialer.DialContext(ctx, "tcp6", net.JoinHostPort(ip.String(), port))
-		} else {
-			result.Conn, result.error = dialer.DialContext(ctx, "tcp4", net.JoinHostPort(ip.String(), port))
-		}
-	}
-
-	go startRacer(ctx, host, false)
-	go startRacer(ctx, host, true)
-
-	for {
-		select {
-		case res := <-results:
-			if res.error == nil {
-				return res.Conn, nil
-			}
-
-			if !res.ipv6 {
-				primary = res
-			} else {
-				fallback = res
-			}
-
-			if primary.done && fallback.done {
-				if primary.resolved {
-					return nil, primary.error
-				} else if fallback.resolved {
-					return nil, fallback.error
-				} else {
-					return nil, primary.error
-				}
-			}
-		}
-	}
-}
-
-func resolveUDPAddr(network, address string) (*net.UDPAddr, error) {
-	host, port, err := net.SplitHostPort(address)
-	if err != nil {
-		return nil, err
-	}
-
-	ip, err := dns.ResolveIP(host)
-	if err != nil {
-		return nil, err
-	}
-	return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
-}

adapters/outbound/vmess.go

@@ -1,129 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"strconv"
-	"strings"
-
-	"github.com/Dreamacro/clash/component/vmess"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Vmess struct {
-	*Base
-	server string
-	client *vmess.Client
-}
-
-type VmessOption struct {
-	Name           string            `proxy:"name"`
-	Server         string            `proxy:"server"`
-	Port           int               `proxy:"port"`
-	UUID           string            `proxy:"uuid"`
-	AlterID        int               `proxy:"alterId"`
-	Cipher         string            `proxy:"cipher"`
-	TLS            bool              `proxy:"tls,omitempty"`
-	UDP            bool              `proxy:"udp,omitempty"`
-	Network        string            `proxy:"network,omitempty"`
-	WSPath         string            `proxy:"ws-path,omitempty"`
-	WSHeaders      map[string]string `proxy:"ws-headers,omitempty"`
-	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
-}
-
-func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialContext(ctx, "tcp", v.server)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error", v.server)
-	}
-	tcpKeepAlive(c)
-	c, err = v.client.New(c, parseVmessAddr(metadata))
-	return newConn(c, v), err
-}
-
-func (v *Vmess) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialContext(ctx, "tcp", v.server)
-	if err != nil {
-		return nil, nil, fmt.Errorf("%s connect error", v.server)
-	}
-	tcpKeepAlive(c)
-	c, err = v.client.New(c, parseVmessAddr(metadata))
-	if err != nil {
-		return nil, nil, fmt.Errorf("new vmess client error: %v", err)
-	}
-	return newPacketConn(&vmessUDPConn{Conn: c}, v), c.RemoteAddr(), nil
-}
-
-func NewVmess(option VmessOption) (*Vmess, error) {
-	security := strings.ToLower(option.Cipher)
-	client, err := vmess.NewClient(vmess.Config{
-		UUID:             option.UUID,
-		AlterID:          uint16(option.AlterID),
-		Security:         security,
-		TLS:              option.TLS,
-		HostName:         option.Server,
-		Port:             strconv.Itoa(option.Port),
-		NetWork:          option.Network,
-		WebSocketPath:    option.WSPath,
-		WebSocketHeaders: option.WSHeaders,
-		SkipCertVerify:   option.SkipCertVerify,
-		SessionCache:     getClientSessionCache(),
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return &Vmess{
-		Base: &Base{
-			name: option.Name,
-			tp:   C.Vmess,
-			udp:  true,
-		},
-		server: net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
-		client: client,
-	}, nil
-}
-
-func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {
-	var addrType byte
-	var addr []byte
-	switch metadata.AddrType {
-	case C.AtypIPv4:
-		addrType = byte(vmess.AtypIPv4)
-		addr = make([]byte, net.IPv4len)
-		copy(addr[:], metadata.DstIP.To4())
-	case C.AtypIPv6:
-		addrType = byte(vmess.AtypIPv6)
-		addr = make([]byte, net.IPv6len)
-		copy(addr[:], metadata.DstIP.To16())
-	case C.AtypDomainName:
-		addrType = byte(vmess.AtypDomainName)
-		addr = make([]byte, len(metadata.Host)+1)
-		addr[0] = byte(len(metadata.Host))
-		copy(addr[1:], []byte(metadata.Host))
-	}
-
-	port, _ := strconv.Atoi(metadata.DstPort)
-	return &vmess.DstAddr{
-		UDP:      metadata.NetWork == C.UDP,
-		AddrType: addrType,
-		Addr:     addr,
-		Port:     uint(port),
-	}
-}
-
-type vmessUDPConn struct {
-	net.Conn
-}
-
-func (uc *vmessUDPConn) WriteTo(b []byte, addr net.Addr) (int, error) {
-	return uc.Conn.Write(b)
-}
-
-func (uc *vmessUDPConn) ReadFrom(b []byte) (int, net.Addr, error) {
-	n, err := uc.Conn.Read(b)
-	return n, uc.RemoteAddr(), err
-}

adapters/outboundgroup/common.go

@@ -1,20 +0,0 @@
-package outboundgroup
-
-import (
-	"time"
-
-	"github.com/Dreamacro/clash/adapters/provider"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-const (
-	defaultGetProxiesDuration = time.Second * 5
-)
-
-func getProvidersProxies(providers []provider.ProxyProvider) []C.Proxy {
-	proxies := []C.Proxy{}
-	for _, provider := range providers {
-		proxies = append(proxies, provider.Proxies()...)
-	}
-	return proxies
-}

adapters/outboundgroup/fallback.go

@@ -1,85 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"net"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/singledo"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Fallback struct {
-	*outbound.Base
-	single    *singledo.Single
-	providers []provider.ProxyProvider
-}
-
-func (f *Fallback) Now() string {
-	proxy := f.findAliveProxy()
-	return proxy.Name()
-}
-
-func (f *Fallback) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxy := f.findAliveProxy()
-	c, err := proxy.DialContext(ctx, metadata)
-	if err == nil {
-		c.AppendToChains(f)
-	}
-	return c, err
-}
-
-func (f *Fallback) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	proxy := f.findAliveProxy()
-	pc, addr, err := proxy.DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(f)
-	}
-	return pc, addr, err
-}
-
-func (f *Fallback) SupportUDP() bool {
-	proxy := f.findAliveProxy()
-	return proxy.SupportUDP()
-}
-
-func (f *Fallback) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range f.proxies() {
-		all = append(all, proxy.Name())
-	}
-	return json.Marshal(map[string]interface{}{
-		"type": f.Type().String(),
-		"now":  f.Now(),
-		"all":  all,
-	})
-}
-
-func (f *Fallback) proxies() []C.Proxy {
-	elm, _, _ := f.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(f.providers), nil
-	})
-
-	return elm.([]C.Proxy)
-}
-
-func (f *Fallback) findAliveProxy() C.Proxy {
-	proxies := f.proxies()
-	for _, proxy := range proxies {
-		if proxy.Alive() {
-			return proxy
-		}
-	}
-
-	return f.proxies()[0]
-}
-
-func NewFallback(name string, providers []provider.ProxyProvider) *Fallback {
-	return &Fallback{
-		Base:      outbound.NewBase(name, C.Fallback, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
-	}
-}

adapters/outboundgroup/loadbalance.go

@@ -1,128 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"net"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/murmur3"
-	"github.com/Dreamacro/clash/common/singledo"
-	C "github.com/Dreamacro/clash/constant"
-
-	"golang.org/x/net/publicsuffix"
-)
-
-type LoadBalance struct {
-	*outbound.Base
-	single    *singledo.Single
-	maxRetry  int
-	providers []provider.ProxyProvider
-}
-
-func getKey(metadata *C.Metadata) string {
-	if metadata.Host != "" {
-		// ip host
-		if ip := net.ParseIP(metadata.Host); ip != nil {
-			return metadata.Host
-		}
-
-		if etld, err := publicsuffix.EffectiveTLDPlusOne(metadata.Host); err == nil {
-			return etld
-		}
-	}
-
-	if metadata.DstIP == nil {
-		return ""
-	}
-
-	return metadata.DstIP.String()
-}
-
-func jumpHash(key uint64, buckets int32) int32 {
-	var b, j int64
-
-	for j < int64(buckets) {
-		b = j
-		key = key*2862933555777941757 + 1
-		j = int64(float64(b+1) * (float64(int64(1)<<31) / float64((key>>33)+1)))
-	}
-
-	return int32(b)
-}
-
-func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Conn, err error) {
-	defer func() {
-		if err == nil {
-			c.AppendToChains(lb)
-		}
-	}()
-
-	key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
-	proxies := lb.proxies()
-	buckets := int32(len(proxies))
-	for i := 0; i < lb.maxRetry; i, key = i+1, key+1 {
-		idx := jumpHash(key, buckets)
-		proxy := proxies[idx]
-		if proxy.Alive() {
-			c, err = proxy.DialContext(ctx, metadata)
-			return
-		}
-	}
-	c, err = proxies[0].DialContext(ctx, metadata)
-	return
-}
-
-func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, addr net.Addr, err error) {
-	defer func() {
-		if err == nil {
-			pc.AppendToChains(lb)
-		}
-	}()
-
-	key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
-	proxies := lb.proxies()
-	buckets := int32(len(proxies))
-	for i := 0; i < lb.maxRetry; i, key = i+1, key+1 {
-		idx := jumpHash(key, buckets)
-		proxy := proxies[idx]
-		if proxy.Alive() {
-			return proxy.DialUDP(metadata)
-		}
-	}
-
-	return proxies[0].DialUDP(metadata)
-}
-
-func (lb *LoadBalance) SupportUDP() bool {
-	return true
-}
-
-func (lb *LoadBalance) proxies() []C.Proxy {
-	elm, _, _ := lb.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(lb.providers), nil
-	})
-
-	return elm.([]C.Proxy)
-}
-
-func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range lb.proxies() {
-		all = append(all, proxy.Name())
-	}
-	return json.Marshal(map[string]interface{}{
-		"type": lb.Type().String(),
-		"all":  all,
-	})
-}
-
-func NewLoadBalance(name string, providers []provider.ProxyProvider) *LoadBalance {
-	return &LoadBalance{
-		Base:      outbound.NewBase(name, C.LoadBalance, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		maxRetry:  3,
-		providers: providers,
-	}
-}

adapters/outboundgroup/parser.go

@@ -1,144 +0,0 @@
-package outboundgroup
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/structure"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-var (
-	errFormat            = errors.New("format error")
-	errType              = errors.New("unsupport type")
-	errMissUse           = errors.New("`use` field should not be empty")
-	errMissProxy         = errors.New("`use` or `proxies` missing")
-	errMissHealthCheck   = errors.New("`url` or `interval` missing")
-	errDuplicateProvider = errors.New("`duplicate provider name")
-)
-
-type GroupCommonOption struct {
-	Name     string   `group:"name"`
-	Type     string   `group:"type"`
-	Proxies  []string `group:"proxies,omitempty"`
-	Use      []string `group:"use,omitempty"`
-	URL      string   `group:"url,omitempty"`
-	Interval int      `group:"interval,omitempty"`
-}
-
-func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy, providersMap map[string]provider.ProxyProvider) (C.ProxyAdapter, error) {
-	decoder := structure.NewDecoder(structure.Option{TagName: "group", WeaklyTypedInput: true})
-
-	groupOption := &GroupCommonOption{}
-	if err := decoder.Decode(config, groupOption); err != nil {
-		return nil, errFormat
-	}
-
-	if groupOption.Type == "" || groupOption.Name == "" {
-		return nil, errFormat
-	}
-
-	groupName := groupOption.Name
-
-	providers := []provider.ProxyProvider{}
-
-	if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 {
-		return nil, errMissProxy
-	}
-
-	if len(groupOption.Proxies) != 0 {
-		ps, err := getProxies(proxyMap, groupOption.Proxies)
-		if err != nil {
-			return nil, err
-		}
-
-		// if Use not empty, drop health check options
-		if len(groupOption.Use) != 0 {
-			hc := provider.NewHealthCheck(ps, "", 0)
-			pd, err := provider.NewCompatibleProvier(groupName, ps, hc)
-			if err != nil {
-				return nil, err
-			}
-
-			providers = append(providers, pd)
-		} else {
-			// select don't need health check
-			if groupOption.Type == "select" {
-				hc := provider.NewHealthCheck(ps, "", 0)
-				pd, err := provider.NewCompatibleProvier(groupName, ps, hc)
-				if err != nil {
-					return nil, err
-				}
-
-				providers = append(providers, pd)
-				providersMap[groupName] = pd
-			} else {
-				if groupOption.URL == "" || groupOption.Interval == 0 {
-					return nil, errMissHealthCheck
-				}
-
-				hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval))
-				pd, err := provider.NewCompatibleProvier(groupName, ps, hc)
-				if err != nil {
-					return nil, err
-				}
-
-				providers = append(providers, pd)
-				providersMap[groupName] = pd
-			}
-		}
-	}
-
-	if len(groupOption.Use) != 0 {
-		list, err := getProviders(providersMap, groupOption.Use)
-		if err != nil {
-			return nil, err
-		}
-		providers = append(providers, list...)
-	}
-
-	var group C.ProxyAdapter
-	switch groupOption.Type {
-	case "url-test":
-		group = NewURLTest(groupName, providers)
-	case "select":
-		group = NewSelector(groupName, providers)
-	case "fallback":
-		group = NewFallback(groupName, providers)
-	case "load-balance":
-		group = NewLoadBalance(groupName, providers)
-	default:
-		return nil, fmt.Errorf("%w: %s", errType, groupOption.Type)
-	}
-
-	return group, nil
-}
-
-func getProxies(mapping map[string]C.Proxy, list []string) ([]C.Proxy, error) {
-	var ps []C.Proxy
-	for _, name := range list {
-		p, ok := mapping[name]
-		if !ok {
-			return nil, fmt.Errorf("'%s' not found", name)
-		}
-		ps = append(ps, p)
-	}
-	return ps, nil
-}
-
-func getProviders(mapping map[string]provider.ProxyProvider, list []string) ([]provider.ProxyProvider, error) {
-	var ps []provider.ProxyProvider
-	for _, name := range list {
-		p, ok := mapping[name]
-		if !ok {
-			return nil, fmt.Errorf("'%s' not found", name)
-		}
-
-		if p.VehicleType() == provider.Compatible {
-			return nil, fmt.Errorf("proxy group %s can't contains in `use`", name)
-		}
-		ps = append(ps, p)
-	}
-	return ps, nil
-}

adapters/outboundgroup/selector.go

@@ -1,86 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"net"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/singledo"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Selector struct {
-	*outbound.Base
-	single    *singledo.Single
-	selected  C.Proxy
-	providers []provider.ProxyProvider
-}
-
-func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := s.selected.DialContext(ctx, metadata)
-	if err == nil {
-		c.AppendToChains(s)
-	}
-	return c, err
-}
-
-func (s *Selector) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	pc, addr, err := s.selected.DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(s)
-	}
-	return pc, addr, err
-}
-
-func (s *Selector) SupportUDP() bool {
-	return s.selected.SupportUDP()
-}
-
-func (s *Selector) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range s.proxies() {
-		all = append(all, proxy.Name())
-	}
-
-	return json.Marshal(map[string]interface{}{
-		"type": s.Type().String(),
-		"now":  s.Now(),
-		"all":  all,
-	})
-}
-
-func (s *Selector) Now() string {
-	return s.selected.Name()
-}
-
-func (s *Selector) Set(name string) error {
-	for _, proxy := range s.proxies() {
-		if proxy.Name() == name {
-			s.selected = proxy
-			return nil
-		}
-	}
-
-	return errors.New("Proxy does not exist")
-}
-
-func (s *Selector) proxies() []C.Proxy {
-	elm, _, _ := s.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(s.providers), nil
-	})
-
-	return elm.([]C.Proxy)
-}
-
-func NewSelector(name string, providers []provider.ProxyProvider) *Selector {
-	selected := providers[0].Proxies()[0]
-	return &Selector{
-		Base:      outbound.NewBase(name, C.Selector, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
-		selected:  selected,
-	}
-}

adapters/outboundgroup/urltest.go

@@ -1,95 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"net"
-	"time"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/singledo"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type URLTest struct {
-	*outbound.Base
-	single     *singledo.Single
-	fastSingle *singledo.Single
-	providers  []provider.ProxyProvider
-}
-
-func (u *URLTest) Now() string {
-	return u.fast().Name()
-}
-
-func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Conn, err error) {
-	c, err = u.fast().DialContext(ctx, metadata)
-	if err == nil {
-		c.AppendToChains(u)
-	}
-	return c, err
-}
-
-func (u *URLTest) DialUDP(metadata *C.Metadata) (C.PacketConn, net.Addr, error) {
-	pc, addr, err := u.fast().DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(u)
-	}
-	return pc, addr, err
-}
-
-func (u *URLTest) proxies() []C.Proxy {
-	elm, _, _ := u.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(u.providers), nil
-	})
-
-	return elm.([]C.Proxy)
-}
-
-func (u *URLTest) fast() C.Proxy {
-	elm, _, _ := u.fastSingle.Do(func() (interface{}, error) {
-		proxies := u.proxies()
-		fast := proxies[0]
-		min := fast.LastDelay()
-		for _, proxy := range proxies[1:] {
-			if !proxy.Alive() {
-				continue
-			}
-
-			delay := proxy.LastDelay()
-			if delay < min {
-				fast = proxy
-				min = delay
-			}
-		}
-		return fast, nil
-	})
-
-	return elm.(C.Proxy)
-}
-
-func (u *URLTest) SupportUDP() bool {
-	return u.fast().SupportUDP()
-}
-
-func (u *URLTest) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range u.proxies() {
-		all = append(all, proxy.Name())
-	}
-	return json.Marshal(map[string]interface{}{
-		"type": u.Type().String(),
-		"now":  u.Now(),
-		"all":  all,
-	})
-}
-
-func NewURLTest(name string, providers []provider.ProxyProvider) *URLTest {
-	return &URLTest{
-		Base:       outbound.NewBase(name, C.URLTest, false),
-		single:     singledo.NewSingle(defaultGetProxiesDuration),
-		fastSingle: singledo.NewSingle(time.Second * 10),
-		providers:  providers,
-	}
-}

adapters/provider/healthcheck.go

@@ -1,70 +0,0 @@
-package provider
-
-import (
-	"context"
-	"time"
-
-	C "github.com/Dreamacro/clash/constant"
-)
-
-const (
-	defaultURLTestTimeout = time.Second * 5
-)
-
-type HealthCheckOption struct {
-	URL      string
-	Interval uint
-}
-
-type HealthCheck struct {
-	url      string
-	proxies  []C.Proxy
-	interval uint
-	done     chan struct{}
-}
-
-func (hc *HealthCheck) process() {
-	ticker := time.NewTicker(time.Duration(hc.interval) * time.Second)
-
-	go hc.check()
-	for {
-		select {
-		case <-ticker.C:
-			hc.check()
-		case <-hc.done:
-			ticker.Stop()
-			return
-		}
-	}
-}
-
-func (hc *HealthCheck) setProxy(proxies []C.Proxy) {
-	hc.proxies = proxies
-}
-
-func (hc *HealthCheck) auto() bool {
-	return hc.interval != 0
-}
-
-func (hc *HealthCheck) check() {
-	ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
-	for _, proxy := range hc.proxies {
-		go proxy.URLTest(ctx, hc.url)
-	}
-
-	<-ctx.Done()
-	cancel()
-}
-
-func (hc *HealthCheck) close() {
-	hc.done <- struct{}{}
-}
-
-func NewHealthCheck(proxies []C.Proxy, url string, interval uint) *HealthCheck {
-	return &HealthCheck{
-		proxies:  proxies,
-		url:      url,
-		interval: interval,
-		done:     make(chan struct{}, 1),
-	}
-}

adapters/provider/parser.go

@@ -1,58 +0,0 @@
-package provider
-
-import (
-	"errors"
-	"fmt"
-	"time"
-
-	"github.com/Dreamacro/clash/common/structure"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-var (
-	errVehicleType = errors.New("unsupport vehicle type")
-)
-
-type healthCheckSchema struct {
-	Enable   bool   `provider:"enable"`
-	URL      string `provider:"url"`
-	Interval int    `provider:"interval"`
-}
-
-type proxyProviderSchema struct {
-	Type        string            `provider:"type"`
-	Path        string            `provider:"path"`
-	URL         string            `provider:"url,omitempty"`
-	Interval    int               `provider:"interval,omitempty"`
-	HealthCheck healthCheckSchema `provider:"health-check,omitempty"`
-}
-
-func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvider, error) {
-	decoder := structure.NewDecoder(structure.Option{TagName: "provider", WeaklyTypedInput: true})
-
-	schema := &proxyProviderSchema{}
-	if err := decoder.Decode(mapping, schema); err != nil {
-		return nil, err
-	}
-
-	var hcInterval uint = 0
-	if schema.HealthCheck.Enable {
-		hcInterval = uint(schema.HealthCheck.Interval)
-	}
-	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval)
-
-	path := C.Path.Reslove(schema.Path)
-
-	var vehicle Vehicle
-	switch schema.Type {
-	case "file":
-		vehicle = NewFileVehicle(path)
-	case "http":
-		vehicle = NewHTTPVehicle(schema.URL, path)
-	default:
-		return nil, fmt.Errorf("%w: %s", errVehicleType, schema.Type)
-	}
-
-	interval := time.Duration(uint(schema.Interval)) * time.Second
-	return NewProxySetProvider(name, interval, vehicle, hc), nil
-}

adapters/provider/provider.go

@@ -1,318 +0,0 @@
-package provider
-
-import (
-	"bytes"
-	"crypto/md5"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"time"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	C "github.com/Dreamacro/clash/constant"
-	"github.com/Dreamacro/clash/log"
-
-	"gopkg.in/yaml.v2"
-)
-
-const (
-	ReservedName = "default"
-
-	fileMode = 0666
-)
-
-// Provider Type
-const (
-	Proxy ProviderType = iota
-	Rule
-)
-
-// ProviderType defined
-type ProviderType int
-
-func (pt ProviderType) String() string {
-	switch pt {
-	case Proxy:
-		return "Proxy"
-	case Rule:
-		return "Rule"
-	default:
-		return "Unknown"
-	}
-}
-
-// Provider interface
-type Provider interface {
-	Name() string
-	VehicleType() VehicleType
-	Type() ProviderType
-	Initial() error
-	Reload() error
-	Destroy() error
-}
-
-// ProxyProvider interface
-type ProxyProvider interface {
-	Provider
-	Proxies() []C.Proxy
-	HealthCheck()
-	Update() error
-}
-
-type ProxySchema struct {
-	Proxies []map[string]interface{} `yaml:"proxies"`
-}
-
-type ProxySetProvider struct {
-	name        string
-	vehicle     Vehicle
-	hash        [16]byte
-	proxies     []C.Proxy
-	healthCheck *HealthCheck
-	ticker      *time.Ticker
-	updatedAt   *time.Time
-}
-
-func (pp *ProxySetProvider) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]interface{}{
-		"name":        pp.Name(),
-		"type":        pp.Type().String(),
-		"vehicleType": pp.VehicleType().String(),
-		"proxies":     pp.Proxies(),
-		"updatedAt":   pp.updatedAt,
-	})
-}
-
-func (pp *ProxySetProvider) Name() string {
-	return pp.name
-}
-
-func (pp *ProxySetProvider) Reload() error {
-	return nil
-}
-
-func (pp *ProxySetProvider) HealthCheck() {
-	pp.healthCheck.check()
-}
-
-func (pp *ProxySetProvider) Update() error {
-	return pp.pull()
-}
-
-func (pp *ProxySetProvider) Destroy() error {
-	pp.healthCheck.close()
-
-	if pp.ticker != nil {
-		pp.ticker.Stop()
-	}
-
-	return nil
-}
-
-func (pp *ProxySetProvider) Initial() error {
-	var buf []byte
-	var err error
-	if stat, err := os.Stat(pp.vehicle.Path()); err == nil {
-		buf, err = ioutil.ReadFile(pp.vehicle.Path())
-		modTime := stat.ModTime()
-		pp.updatedAt = &modTime
-	} else {
-		buf, err = pp.vehicle.Read()
-	}
-
-	if err != nil {
-		return err
-	}
-
-	proxies, err := pp.parse(buf)
-	if err != nil {
-		return err
-	}
-
-	if err := ioutil.WriteFile(pp.vehicle.Path(), buf, fileMode); err != nil {
-		return err
-	}
-
-	pp.hash = md5.Sum(buf)
-	pp.setProxies(proxies)
-
-	// pull proxies automatically
-	if pp.ticker != nil {
-		go pp.pullLoop()
-	}
-
-	return nil
-}
-
-func (pp *ProxySetProvider) VehicleType() VehicleType {
-	return pp.vehicle.Type()
-}
-
-func (pp *ProxySetProvider) Type() ProviderType {
-	return Proxy
-}
-
-func (pp *ProxySetProvider) Proxies() []C.Proxy {
-	return pp.proxies
-}
-
-func (pp *ProxySetProvider) pullLoop() {
-	for range pp.ticker.C {
-		if err := pp.pull(); err != nil {
-			log.Warnln("[Provider] %s pull error: %s", pp.Name(), err.Error())
-		}
-	}
-}
-
-func (pp *ProxySetProvider) pull() error {
-	buf, err := pp.vehicle.Read()
-	if err != nil {
-		return err
-	}
-
-	now := time.Now()
-	hash := md5.Sum(buf)
-	if bytes.Equal(pp.hash[:], hash[:]) {
-		log.Debugln("[Provider] %s's proxies doesn't change", pp.Name())
-		pp.updatedAt = &now
-		return nil
-	}
-
-	proxies, err := pp.parse(buf)
-	if err != nil {
-		return err
-	}
-	log.Infoln("[Provider] %s's proxies update", pp.Name())
-
-	if err := ioutil.WriteFile(pp.vehicle.Path(), buf, fileMode); err != nil {
-		return err
-	}
-
-	pp.updatedAt = &now
-	pp.hash = hash
-	pp.setProxies(proxies)
-
-	return nil
-}
-
-func (pp *ProxySetProvider) parse(buf []byte) ([]C.Proxy, error) {
-	schema := &ProxySchema{}
-
-	if err := yaml.Unmarshal(buf, schema); err != nil {
-		return nil, err
-	}
-
-	if schema.Proxies == nil {
-		return nil, errors.New("File must have a `proxies` field")
-	}
-
-	proxies := []C.Proxy{}
-	for idx, mapping := range schema.Proxies {
-		proxy, err := outbound.ParseProxy(mapping)
-		if err != nil {
-			return nil, fmt.Errorf("Proxy %d error: %w", idx, err)
-		}
-		proxies = append(proxies, proxy)
-	}
-
-	if len(proxies) == 0 {
-		return nil, errors.New("File doesn't have any valid proxy")
-	}
-
-	return proxies, nil
-}
-
-func (pp *ProxySetProvider) setProxies(proxies []C.Proxy) {
-	pp.proxies = proxies
-	pp.healthCheck.setProxy(proxies)
-	go pp.healthCheck.check()
-}
-
-func NewProxySetProvider(name string, interval time.Duration, vehicle Vehicle, hc *HealthCheck) *ProxySetProvider {
-	var ticker *time.Ticker
-	if interval != 0 {
-		ticker = time.NewTicker(interval)
-	}
-
-	if hc.auto() {
-		go hc.process()
-	}
-
-	return &ProxySetProvider{
-		name:        name,
-		vehicle:     vehicle,
-		proxies:     []C.Proxy{},
-		healthCheck: hc,
-		ticker:      ticker,
-	}
-}
-
-type CompatibleProvier struct {
-	name        string
-	healthCheck *HealthCheck
-	proxies     []C.Proxy
-}
-
-func (cp *CompatibleProvier) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]interface{}{
-		"name":        cp.Name(),
-		"type":        cp.Type().String(),
-		"vehicleType": cp.VehicleType().String(),
-		"proxies":     cp.Proxies(),
-	})
-}
-
-func (cp *CompatibleProvier) Name() string {
-	return cp.name
-}
-
-func (cp *CompatibleProvier) Reload() error {
-	return nil
-}
-
-func (cp *CompatibleProvier) Destroy() error {
-	cp.healthCheck.close()
-	return nil
-}
-
-func (cp *CompatibleProvier) HealthCheck() {
-	cp.healthCheck.check()
-}
-
-func (cp *CompatibleProvier) Update() error {
-	return nil
-}
-
-func (cp *CompatibleProvier) Initial() error {
-	return nil
-}
-
-func (cp *CompatibleProvier) VehicleType() VehicleType {
-	return Compatible
-}
-
-func (cp *CompatibleProvier) Type() ProviderType {
-	return Proxy
-}
-
-func (cp *CompatibleProvier) Proxies() []C.Proxy {
-	return cp.proxies
-}
-
-func NewCompatibleProvier(name string, proxies []C.Proxy, hc *HealthCheck) (*CompatibleProvier, error) {
-	if len(proxies) == 0 {
-		return nil, errors.New("Provider need one proxy at least")
-	}
-
-	if hc.auto() {
-		go hc.process()
-	}
-
-	return &CompatibleProvier{
-		name:        name,
-		proxies:     proxies,
-		healthCheck: hc,
-	}, nil
-}

adapters/provider/vehicle.go

@@ -1,109 +0,0 @@
-package provider
-
-import (
-	"context"
-	"io/ioutil"
-	"net/http"
-	"time"
-)
-
-// Vehicle Type
-const (
-	File VehicleType = iota
-	HTTP
-	Compatible
-)
-
-// VehicleType defined
-type VehicleType int
-
-func (v VehicleType) String() string {
-	switch v {
-	case File:
-		return "File"
-	case HTTP:
-		return "HTTP"
-	case Compatible:
-		return "Compatible"
-	default:
-		return "Unknown"
-	}
-}
-
-type Vehicle interface {
-	Read() ([]byte, error)
-	Path() string
-	Type() VehicleType
-}
-
-type FileVehicle struct {
-	path string
-}
-
-func (f *FileVehicle) Type() VehicleType {
-	return File
-}
-
-func (f *FileVehicle) Path() string {
-	return f.path
-}
-
-func (f *FileVehicle) Read() ([]byte, error) {
-	return ioutil.ReadFile(f.path)
-}
-
-func NewFileVehicle(path string) *FileVehicle {
-	return &FileVehicle{path: path}
-}
-
-type HTTPVehicle struct {
-	url  string
-	path string
-}
-
-func (h *HTTPVehicle) Type() VehicleType {
-	return HTTP
-}
-
-func (h *HTTPVehicle) Path() string {
-	return h.path
-}
-
-func (h *HTTPVehicle) Read() ([]byte, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*20)
-	defer cancel()
-
-	req, err := http.NewRequest(http.MethodGet, h.url, nil)
-	if err != nil {
-		return nil, err
-	}
-	req = req.WithContext(ctx)
-
-	transport := &http.Transport{
-		// from http.DefaultTransport
-		MaxIdleConns:          100,
-		IdleConnTimeout:       90 * time.Second,
-		TLSHandshakeTimeout:   10 * time.Second,
-		ExpectContinueTimeout: 1 * time.Second,
-	}
-
-	client := http.Client{Transport: transport}
-	resp, err := client.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	buf, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := ioutil.WriteFile(h.path, buf, fileMode); err != nil {
-		return nil, err
-	}
-
-	return buf, nil
-}
-
-func NewHTTPVehicle(url string, path string) *HTTPVehicle {
-	return &HTTPVehicle{url, path}
-}

check_amd64.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+flags=$(grep '^flags\b' </proc/cpuinfo | head -n 1)
+flags=" ${flags#*:} "
+
+has_flags () {
+  for flag; do
+    case "$flags" in
+      *" $flag "*) :;;
+      *) return 1;;
+    esac
+  done
+}
+
+determine_level () {
+  level=0
+  has_flags lm cmov cx8 fpu fxsr mmx syscall sse2 || return 0
+  level=1
+  has_flags cx16 lahf_lm popcnt sse4_1 sse4_2 ssse3 || return 0
+  level=2
+  has_flags avx avx2 bmi1 bmi2 f16c fma abm movbe xsave || return 0
+  level=3
+  has_flags avx512f avx512bw avx512cd avx512dq avx512vl || return 0
+  level=4
+}
+
+determine_level
+echo "Your CPU supports amd64-v$level"
+return $level

common/atomic/type.go

@@ -0,0 +1,198 @@
+package atomic
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"sync/atomic"
+)
+
+type Bool struct {
+	atomic.Bool
+}
+
+func NewBool(val bool) (i Bool) {
+	i.Store(val)
+	return
+}
+
+func (i *Bool) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Bool) UnmarshalJSON(b []byte) error {
+	var v bool
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Bool) String() string {
+	v := i.Load()
+	return strconv.FormatBool(v)
+}
+
+type Pointer[T any] struct {
+	atomic.Pointer[T]
+}
+
+func NewPointer[T any](v *T) (p Pointer[T]) {
+	if v != nil {
+		p.Store(v)
+	}
+	return
+}
+
+func (p *Pointer[T]) MarshalJSON() ([]byte, error) {
+	return json.Marshal(p.Load())
+}
+
+func (p *Pointer[T]) UnmarshalJSON(b []byte) error {
+	var v *T
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	p.Store(v)
+	return nil
+}
+
+func (p *Pointer[T]) String() string {
+	return fmt.Sprint(p.Load())
+}
+
+type Int32 struct {
+	atomic.Int32
+}
+
+func NewInt32(val int32) (i Int32) {
+	i.Store(val)
+	return
+}
+
+func (i *Int32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Int32) UnmarshalJSON(b []byte) error {
+	var v int32
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Int32) String() string {
+	v := i.Load()
+	return strconv.FormatInt(int64(v), 10)
+}
+
+type Int64 struct {
+	atomic.Int64
+}
+
+func NewInt64(val int64) (i Int64) {
+	i.Store(val)
+	return
+}
+
+func (i *Int64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Int64) UnmarshalJSON(b []byte) error {
+	var v int64
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Int64) String() string {
+	v := i.Load()
+	return strconv.FormatInt(int64(v), 10)
+}
+
+type Uint32 struct {
+	atomic.Uint32
+}
+
+func NewUint32(val uint32) (i Uint32) {
+	i.Store(val)
+	return
+}
+
+func (i *Uint32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Uint32) UnmarshalJSON(b []byte) error {
+	var v uint32
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Uint32) String() string {
+	v := i.Load()
+	return strconv.FormatUint(uint64(v), 10)
+}
+
+type Uint64 struct {
+	atomic.Uint64
+}
+
+func NewUint64(val uint64) (i Uint64) {
+	i.Store(val)
+	return
+}
+
+func (i *Uint64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Uint64) UnmarshalJSON(b []byte) error {
+	var v uint64
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Uint64) String() string {
+	v := i.Load()
+	return strconv.FormatUint(uint64(v), 10)
+}
+
+type Uintptr struct {
+	atomic.Uintptr
+}
+
+func NewUintptr(val uintptr) (i Uintptr) {
+	i.Store(val)
+	return
+}
+
+func (i *Uintptr) MarshalJSON() ([]byte, error) {
+	return json.Marshal(i.Load())
+}
+
+func (i *Uintptr) UnmarshalJSON(b []byte) error {
+	var v uintptr
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	i.Store(v)
+	return nil
+}
+
+func (i *Uintptr) String() string {
+	v := i.Load()
+	return strconv.FormatUint(uint64(v), 10)
+}

common/atomic/value.go

@@ -0,0 +1,57 @@
+package atomic
+
+import (
+	"encoding/json"
+	"sync/atomic"
+)
+
+func DefaultValue[T any]() T {
+	var defaultValue T
+	return defaultValue
+}
+
+type TypedValue[T any] struct {
+	value atomic.Value
+}
+
+func (t *TypedValue[T]) Load() T {
+	value := t.value.Load()
+	if value == nil {
+		return DefaultValue[T]()
+	}
+	return value.(T)
+}
+
+func (t *TypedValue[T]) Store(value T) {
+	t.value.Store(value)
+}
+
+func (t *TypedValue[T]) Swap(new T) T {
+	old := t.value.Swap(new)
+	if old == nil {
+		return DefaultValue[T]()
+	}
+	return old.(T)
+}
+
+func (t *TypedValue[T]) CompareAndSwap(old, new T) bool {
+	return t.value.CompareAndSwap(old, new)
+}
+
+func (t *TypedValue[T]) MarshalJSON() ([]byte, error) {
+	return json.Marshal(t.Load())
+}
+
+func (t *TypedValue[T]) UnmarshalJSON(b []byte) error {
+	var v T
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	t.Store(v)
+	return nil
+}
+
+func NewTypedValue[T any](t T) (v TypedValue[T]) {
+	v.Store(t)
+	return
+}

common/batch/batch.go

@@ -0,0 +1,105 @@
+package batch
+
+import (
+	"context"
+	"sync"
+)
+
+type Option[T any] func(b *Batch[T])
+
+type Result[T any] struct {
+	Value T
+	Err   error
+}
+
+type Error struct {
+	Key string
+	Err error
+}
+
+func WithConcurrencyNum[T any](n int) Option[T] {
+	return func(b *Batch[T]) {
+		q := make(chan struct{}, n)
+		for i := 0; i < n; i++ {
+			q <- struct{}{}
+		}
+		b.queue = q
+	}
+}
+
+// Batch similar to errgroup, but can control the maximum number of concurrent
+type Batch[T any] struct {
+	result map[string]Result[T]
+	queue  chan struct{}
+	wg     sync.WaitGroup
+	mux    sync.Mutex
+	err    *Error
+	once   sync.Once
+	cancel func()
+}
+
+func (b *Batch[T]) Go(key string, fn func() (T, error)) {
+	b.wg.Add(1)
+	go func() {
+		defer b.wg.Done()
+		if b.queue != nil {
+			<-b.queue
+			defer func() {
+				b.queue <- struct{}{}
+			}()
+		}
+
+		value, err := fn()
+		if err != nil {
+			b.once.Do(func() {
+				b.err = &Error{key, err}
+				if b.cancel != nil {
+					b.cancel()
+				}
+			})
+		}
+
+		ret := Result[T]{value, err}
+		b.mux.Lock()
+		defer b.mux.Unlock()
+		b.result[key] = ret
+	}()
+}
+
+func (b *Batch[T]) Wait() *Error {
+	b.wg.Wait()
+	if b.cancel != nil {
+		b.cancel()
+	}
+	return b.err
+}
+
+func (b *Batch[T]) WaitAndGetResult() (map[string]Result[T], *Error) {
+	err := b.Wait()
+	return b.Result(), err
+}
+
+func (b *Batch[T]) Result() map[string]Result[T] {
+	b.mux.Lock()
+	defer b.mux.Unlock()
+	copyM := map[string]Result[T]{}
+	for k, v := range b.result {
+		copyM[k] = v
+	}
+	return copyM
+}
+
+func New[T any](ctx context.Context, opts ...Option[T]) (*Batch[T], context.Context) {
+	ctx, cancel := context.WithCancel(ctx)
+
+	b := &Batch[T]{
+		result: map[string]Result[T]{},
+	}
+
+	for _, o := range opts {
+		o(b)
+	}
+
+	b.cancel = cancel
+	return b, ctx
+}

common/batch/batch_test.go

@@ -0,0 +1,83 @@
+package batch
+
+import (
+	"context"
+	"errors"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestBatch(t *testing.T) {
+	b, _ := New[string](context.Background())
+
+	now := time.Now()
+	b.Go("foo", func() (string, error) {
+		time.Sleep(time.Millisecond * 100)
+		return "foo", nil
+	})
+	b.Go("bar", func() (string, error) {
+		time.Sleep(time.Millisecond * 150)
+		return "bar", nil
+	})
+	result, err := b.WaitAndGetResult()
+
+	assert.Nil(t, err)
+
+	duration := time.Since(now)
+	assert.Less(t, duration, time.Millisecond*200)
+	assert.Equal(t, 2, len(result))
+
+	for k, v := range result {
+		assert.NoError(t, v.Err)
+		assert.Equal(t, k, v.Value)
+	}
+}
+
+func TestBatchWithConcurrencyNum(t *testing.T) {
+	b, _ := New[string](
+		context.Background(),
+		WithConcurrencyNum[string](3),
+	)
+
+	now := time.Now()
+	for i := 0; i < 7; i++ {
+		idx := i
+		b.Go(strconv.Itoa(idx), func() (string, error) {
+			time.Sleep(time.Millisecond * 100)
+			return strconv.Itoa(idx), nil
+		})
+	}
+	result, _ := b.WaitAndGetResult()
+	duration := time.Since(now)
+	assert.Greater(t, duration, time.Millisecond*260)
+	assert.Equal(t, 7, len(result))
+
+	for k, v := range result {
+		assert.NoError(t, v.Err)
+		assert.Equal(t, k, v.Value)
+	}
+}
+
+func TestBatchContext(t *testing.T) {
+	b, ctx := New[string](context.Background())
+
+	b.Go("error", func() (string, error) {
+		time.Sleep(time.Millisecond * 100)
+		return "", errors.New("test error")
+	})
+
+	b.Go("ctx", func() (string, error) {
+		<-ctx.Done()
+		return "", ctx.Err()
+	})
+
+	result, err := b.WaitAndGetResult()
+
+	assert.NotNil(t, err)
+	assert.Equal(t, "error", err.Key)
+
+	assert.Equal(t, ctx.Err(), result["ctx"].Err)
+}

common/buf/sing.go

@@ -0,0 +1,21 @@
+package buf
+
+import (
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/buf"
+)
+
+const BufferSize = buf.BufferSize
+
+type Buffer = buf.Buffer
+
+var New = buf.New
+var NewPacket = buf.NewPacket
+var NewSize = buf.NewSize
+var With = buf.With
+var As = buf.As
+
+var (
+	Must  = common.Must
+	Error = common.Error
+)

common/cache/cache.go

@@ -1,106 +0,0 @@
-package cache
-
-import (
-	"runtime"
-	"sync"
-	"time"
-)
-
-// Cache store element with a expired time
-type Cache struct {
-	*cache
-}
-
-type cache struct {
-	mapping sync.Map
-	janitor *janitor
-}
-
-type element struct {
-	Expired time.Time
-	Payload interface{}
-}
-
-// Put element in Cache with its ttl
-func (c *cache) Put(key interface{}, payload interface{}, ttl time.Duration) {
-	c.mapping.Store(key, &element{
-		Payload: payload,
-		Expired: time.Now().Add(ttl),
-	})
-}
-
-// Get element in Cache, and drop when it expired
-func (c *cache) Get(key interface{}) interface{} {
-	item, exist := c.mapping.Load(key)
-	if !exist {
-		return nil
-	}
-	elm := item.(*element)
-	// expired
-	if time.Since(elm.Expired) > 0 {
-		c.mapping.Delete(key)
-		return nil
-	}
-	return elm.Payload
-}
-
-// GetWithExpire element in Cache with Expire Time
-func (c *cache) GetWithExpire(key interface{}) (payload interface{}, expired time.Time) {
-	item, exist := c.mapping.Load(key)
-	if !exist {
-		return
-	}
-	elm := item.(*element)
-	// expired
-	if time.Since(elm.Expired) > 0 {
-		c.mapping.Delete(key)
-		return
-	}
-	return elm.Payload, elm.Expired
-}
-
-func (c *cache) cleanup() {
-	c.mapping.Range(func(k, v interface{}) bool {
-		key := k.(string)
-		elm := v.(*element)
-		if time.Since(elm.Expired) > 0 {
-			c.mapping.Delete(key)
-		}
-		return true
-	})
-}
-
-type janitor struct {
-	interval time.Duration
-	stop     chan struct{}
-}
-
-func (j *janitor) process(c *cache) {
-	ticker := time.NewTicker(j.interval)
-	for {
-		select {
-		case <-ticker.C:
-			c.cleanup()
-		case <-j.stop:
-			ticker.Stop()
-			return
-		}
-	}
-}
-
-func stopJanitor(c *Cache) {
-	c.janitor.stop <- struct{}{}
-}
-
-// New return *Cache
-func New(interval time.Duration) *Cache {
-	j := &janitor{
-		interval: interval,
-		stop:     make(chan struct{}),
-	}
-	c := &cache{janitor: j}
-	go j.process(c)
-	C := &Cache{c}
-	runtime.SetFinalizer(C, stopJanitor)
-	return C
-}

common/cache/cache_test.go

@@ -1,70 +0,0 @@
-package cache
-
-import (
-	"runtime"
-	"testing"
-	"time"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestCache_Basic(t *testing.T) {
-	interval := 200 * time.Millisecond
-	ttl := 20 * time.Millisecond
-	c := New(interval)
-	c.Put("int", 1, ttl)
-	c.Put("string", "a", ttl)
-
-	i := c.Get("int")
-	assert.Equal(t, i.(int), 1, "should recv 1")
-
-	s := c.Get("string")
-	assert.Equal(t, s.(string), "a", "should recv 'a'")
-}
-
-func TestCache_TTL(t *testing.T) {
-	interval := 200 * time.Millisecond
-	ttl := 20 * time.Millisecond
-	now := time.Now()
-	c := New(interval)
-	c.Put("int", 1, ttl)
-	c.Put("int2", 2, ttl)
-
-	i := c.Get("int")
-	_, expired := c.GetWithExpire("int2")
-	assert.Equal(t, i.(int), 1, "should recv 1")
-	assert.True(t, now.Before(expired))
-
-	time.Sleep(ttl * 2)
-	i = c.Get("int")
-	j, _ := c.GetWithExpire("int2")
-	assert.Nil(t, i, "should recv nil")
-	assert.Nil(t, j, "should recv nil")
-}
-
-func TestCache_AutoCleanup(t *testing.T) {
-	interval := 10 * time.Millisecond
-	ttl := 15 * time.Millisecond
-	c := New(interval)
-	c.Put("int", 1, ttl)
-
-	time.Sleep(ttl * 2)
-	i := c.Get("int")
-	j, _ := c.GetWithExpire("int")
-	assert.Nil(t, i, "should recv nil")
-	assert.Nil(t, j, "should recv nil")
-}
-
-func TestCache_AutoGC(t *testing.T) {
-	sign := make(chan struct{})
-	go func() {
-		interval := 10 * time.Millisecond
-		ttl := 15 * time.Millisecond
-		c := New(interval)
-		c.Put("int", 1, ttl)
-		sign <- struct{}{}
-	}()
-
-	<-sign
-	runtime.GC()
-}

common/cache/lrucache.go

@@ -3,63 +3,75 @@ package cache
 // Modified by https://github.com/die-net/lrucache
 
 import (
-	"container/list"
 	"sync"
 	"time"
+
+	"github.com/Dreamacro/clash/common/generics/list"
+
+	"github.com/samber/lo"
 )
 
 // Option is part of Functional Options Pattern
-type Option func(*LruCache)
+type Option[K comparable, V any] func(*LruCache[K, V])
 
 // EvictCallback is used to get a callback when a cache entry is evicted
-type EvictCallback func(key interface{}, value interface{})
+type EvictCallback[K comparable, V any] func(key K, value V)
 
 // WithEvict set the evict callback
-func WithEvict(cb EvictCallback) Option {
-	return func(l *LruCache) {
+func WithEvict[K comparable, V any](cb EvictCallback[K, V]) Option[K, V] {
+	return func(l *LruCache[K, V]) {
 		l.onEvict = cb
 	}
 }
 
 // WithUpdateAgeOnGet update expires when Get element
-func WithUpdateAgeOnGet() Option {
-	return func(l *LruCache) {
+func WithUpdateAgeOnGet[K comparable, V any]() Option[K, V] {
+	return func(l *LruCache[K, V]) {
 		l.updateAgeOnGet = true
 	}
 }
 
 // WithAge defined element max age (second)
-func WithAge(maxAge int64) Option {
-	return func(l *LruCache) {
+func WithAge[K comparable, V any](maxAge int64) Option[K, V] {
+	return func(l *LruCache[K, V]) {
 		l.maxAge = maxAge
 	}
 }
 
 // WithSize defined max length of LruCache
-func WithSize(maxSize int) Option {
-	return func(l *LruCache) {
+func WithSize[K comparable, V any](maxSize int) Option[K, V] {
+	return func(l *LruCache[K, V]) {
 		l.maxSize = maxSize
 	}
 }
 
+// WithStale decide whether Stale return is enabled.
+// If this feature is enabled, element will not get Evicted according to `WithAge`.
+func WithStale[K comparable, V any](stale bool) Option[K, V] {
+	return func(l *LruCache[K, V]) {
+		l.staleReturn = stale
+	}
+}
+
 // LruCache is a thread-safe, in-memory lru-cache that evicts the
 // least recently used entries from memory when (if set) the entries are
 // older than maxAge (in seconds).  Use the New constructor to create one.
-type LruCache struct {
+type LruCache[K comparable, V any] struct {
 	maxAge         int64
 	maxSize        int
 	mu             sync.Mutex
-	cache          map[interface{}]*list.Element
-	lru            *list.List // Front is least-recent
+	cache          map[K]*list.Element[*entry[K, V]]
+	lru            *list.List[*entry[K, V]] // Front is least-recent
 	updateAgeOnGet bool
-	onEvict        EvictCallback
+	staleReturn    bool
+	onEvict        EvictCallback[K, V]
 }
 
-// NewLRUCache creates an LruCache
-func NewLRUCache(options ...Option) *LruCache {
-	lc := &LruCache{
-		lru:   list.New(),
-		cache: make(map[interface{}]*list.Element),
+// New creates an LruCache
+func New[K comparable, V any](options ...Option[K, V]) *LruCache[K, V] {
+	lc := &LruCache[K, V]{
+		lru:   list.New[*entry[K, V]](),
+		cache: make(map[K]*list.Element[*entry[K, V]]),
 	}
 
 	for _, option := range options {
@@ -69,36 +81,54 @@ func NewLRUCache(options ...Option) *LruCache {
 	return lc
 }
 
-// Get returns the interface{} representation of a cached response and a bool
+// Get returns the any representation of a cached response and a bool
 // set to true if the key was found.
-func (c *LruCache) Get(key interface{}) (interface{}, bool) {
+func (c *LruCache[K, V]) Get(key K) (V, bool) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
-	le, ok := c.cache[key]
-	if !ok {
-		return nil, false
+	el := c.get(key)
+	if el == nil {
+		return lo.Empty[V](), false
 	}
-
-	if c.maxAge > 0 && le.Value.(*entry).expires <= time.Now().Unix() {
-		c.deleteElement(le)
-		c.maybeDeleteOldest()
-
-		return nil, false
-	}
-
-	c.lru.MoveToBack(le)
-	entry := le.Value.(*entry)
-	if c.maxAge > 0 && c.updateAgeOnGet {
-		entry.expires = time.Now().Unix() + c.maxAge
-	}
-	value := entry.value
+	value := el.value
 
 	return value, true
 }
 
+func (c *LruCache[K, V]) GetOrStore(key K, constructor func() V) (V, bool) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	el := c.get(key)
+	if el == nil {
+		value := constructor()
+		c.set(key, value)
+		return value, false
+	}
+	value := el.value
+
+	return value, true
+}
+
+// GetWithExpire returns the any representation of a cached response,
+// a time.Time Give expected expires,
+// and a bool set to true if the key was found.
+// This method will NOT check the maxAge of element and will NOT update the expires.
+func (c *LruCache[K, V]) GetWithExpire(key K) (V, time.Time, bool) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	el := c.get(key)
+	if el == nil {
+		return lo.Empty[V](), time.Time{}, false
+	}
+
+	return el.value, time.Unix(el.expires, 0), true
+}
+
 // Exist returns if key exist in cache but not put item to the head of linked list
-func (c *LruCache) Exist(key interface{}) bool {
+func (c *LruCache[K, V]) Exist(key K) bool {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
@@ -106,27 +136,43 @@ func (c *LruCache) Exist(key interface{}) bool {
 	return ok
 }
 
-// Set stores the interface{} representation of a response for a given key.
-func (c *LruCache) Set(key interface{}, value interface{}) {
+// Set stores the any representation of a response for a given key.
+func (c *LruCache[K, V]) Set(key K, value V) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
+	c.set(key, value)
+}
+
+func (c *LruCache[K, V]) set(key K, value V) {
 	expires := int64(0)
 	if c.maxAge > 0 {
 		expires = time.Now().Unix() + c.maxAge
 	}
+	c.setWithExpire(key, value, time.Unix(expires, 0))
+}
 
+// SetWithExpire stores the any representation of a response for a given key and given expires.
+// The expires time will round to second.
+func (c *LruCache[K, V]) SetWithExpire(key K, value V, expires time.Time) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	c.setWithExpire(key, value, expires)
+}
+
+func (c *LruCache[K, V]) setWithExpire(key K, value V, expires time.Time) {
 	if le, ok := c.cache[key]; ok {
 		c.lru.MoveToBack(le)
-		e := le.Value.(*entry)
+		e := le.Value
 		e.value = value
-		e.expires = expires
+		e.expires = expires.Unix()
 	} else {
-		e := &entry{key: key, value: value, expires: expires}
+		e := &entry[K, V]{key: key, value: value, expires: expires.Unix()}
 		c.cache[key] = c.lru.PushBack(e)
 
 		if c.maxSize > 0 {
-			if len := c.lru.Len(); len > c.maxSize {
+			if elLen := c.lru.Len(); elLen > c.maxSize {
 				c.deleteElement(c.lru.Front())
 			}
 		}
@@ -135,37 +181,83 @@ func (c *LruCache) Set(key interface{}, value interface{}) {
 	c.maybeDeleteOldest()
 }
 
-// Delete removes the value associated with a key.
-func (c *LruCache) Delete(key string) {
+// CloneTo clone and overwrite elements to another LruCache
+func (c *LruCache[K, V]) CloneTo(n *LruCache[K, V]) {
 	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	n.mu.Lock()
+	defer n.mu.Unlock()
+
+	n.lru = list.New[*entry[K, V]]()
+	n.cache = make(map[K]*list.Element[*entry[K, V]])
+
+	for e := c.lru.Front(); e != nil; e = e.Next() {
+		elm := e.Value
+		n.cache[elm.key] = n.lru.PushBack(elm)
+	}
+}
+
+func (c *LruCache[K, V]) get(key K) *entry[K, V] {
+	le, ok := c.cache[key]
+	if !ok {
+		return nil
+	}
+
+	if !c.staleReturn && c.maxAge > 0 && le.Value.expires <= time.Now().Unix() {
+		c.deleteElement(le)
+		c.maybeDeleteOldest()
+
+		return nil
+	}
+
+	c.lru.MoveToBack(le)
+	el := le.Value
+	if c.maxAge > 0 && c.updateAgeOnGet {
+		el.expires = time.Now().Unix() + c.maxAge
+	}
+	return el
+}
+
+// Delete removes the value associated with a key.
+func (c *LruCache[K, V]) Delete(key K) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
 
 	if le, ok := c.cache[key]; ok {
 		c.deleteElement(le)
 	}
-
-	c.mu.Unlock()
 }
 
-func (c *LruCache) maybeDeleteOldest() {
-	if c.maxAge > 0 {
+func (c *LruCache[K, V]) maybeDeleteOldest() {
+	if !c.staleReturn && c.maxAge > 0 {
 		now := time.Now().Unix()
-		for le := c.lru.Front(); le != nil && le.Value.(*entry).expires <= now; le = c.lru.Front() {
+		for le := c.lru.Front(); le != nil && le.Value.expires <= now; le = c.lru.Front() {
 			c.deleteElement(le)
 		}
 	}
 }
 
-func (c *LruCache) deleteElement(le *list.Element) {
+func (c *LruCache[K, V]) deleteElement(le *list.Element[*entry[K, V]]) {
 	c.lru.Remove(le)
-	e := le.Value.(*entry)
+	e := le.Value
 	delete(c.cache, e.key)
 	if c.onEvict != nil {
 		c.onEvict(e.key, e.value)
 	}
 }
 
-type entry struct {
-	key     interface{}
-	value   interface{}
+func (c *LruCache[K, V]) Clear() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	c.cache = make(map[K]*list.Element[*entry[K, V]])
+
+	return nil
+}
+
+type entry[K comparable, V any] struct {
+	key     K
+	value   V
 	expires int64
 }

common/cache/lrucache_test.go

@@ -19,7 +19,7 @@ var entries = []struct {
 }
 
 func TestLRUCache(t *testing.T) {
-	c := NewLRUCache()
+	c := New[string, string]()
 
 	for _, e := range entries {
 		c.Set(e.key, e.value)
@@ -32,7 +32,7 @@ func TestLRUCache(t *testing.T) {
 	for _, e := range entries {
 		value, ok := c.Get(e.key)
 		if assert.True(t, ok) {
-			assert.Equal(t, e.value, value.(string))
+			assert.Equal(t, e.value, value)
 		}
 	}
 
@@ -45,25 +45,25 @@ func TestLRUCache(t *testing.T) {
 }
 
 func TestLRUMaxAge(t *testing.T) {
-	c := NewLRUCache(WithAge(86400))
+	c := New[string, string](WithAge[string, string](86400))
 
 	now := time.Now().Unix()
 	expected := now + 86400
 
 	// Add one expired entry
 	c.Set("foo", "bar")
-	c.lru.Back().Value.(*entry).expires = now
+	c.lru.Back().Value.expires = now
 
 	// Reset
 	c.Set("foo", "bar")
-	e := c.lru.Back().Value.(*entry)
+	e := c.lru.Back().Value
 	assert.True(t, e.expires >= now)
-	c.lru.Back().Value.(*entry).expires = now
+	c.lru.Back().Value.expires = now
 
 	// Set a few and verify expiration times
 	for _, s := range entries {
 		c.Set(s.key, s.value)
-		e := c.lru.Back().Value.(*entry)
+		e := c.lru.Back().Value
 		assert.True(t, e.expires >= expected && e.expires <= expected+10)
 	}
 
@@ -77,7 +77,7 @@ func TestLRUMaxAge(t *testing.T) {
 	for _, s := range entries {
 		le, ok := c.cache[s.key]
 		if assert.True(t, ok) {
-			le.Value.(*entry).expires = now
+			le.Value.expires = now
 		}
 	}
 
@@ -88,22 +88,22 @@ func TestLRUMaxAge(t *testing.T) {
 }
 
 func TestLRUpdateOnGet(t *testing.T) {
-	c := NewLRUCache(WithAge(86400), WithUpdateAgeOnGet())
+	c := New[string, string](WithAge[string, string](86400), WithUpdateAgeOnGet[string, string]())
 
 	now := time.Now().Unix()
 	expires := now + 86400/2
 
 	// Add one expired entry
 	c.Set("foo", "bar")
-	c.lru.Back().Value.(*entry).expires = expires
+	c.lru.Back().Value.expires = expires
 
 	_, ok := c.Get("foo")
 	assert.True(t, ok)
-	assert.True(t, c.lru.Back().Value.(*entry).expires > expires)
+	assert.True(t, c.lru.Back().Value.expires > expires)
 }
 
 func TestMaxSize(t *testing.T) {
-	c := NewLRUCache(WithSize(2))
+	c := New[string, string](WithSize[string, string](2))
 	// Add one expired entry
 	c.Set("foo", "bar")
 	_, ok := c.Get("foo")
@@ -117,7 +117,7 @@ func TestMaxSize(t *testing.T) {
 }
 
 func TestExist(t *testing.T) {
-	c := NewLRUCache(WithSize(1))
+	c := New[int, int](WithSize[int, int](1))
 	c.Set(1, 2)
 	assert.True(t, c.Exist(1))
 	c.Set(2, 3)
@@ -126,13 +126,59 @@ func TestExist(t *testing.T) {
 
 func TestEvict(t *testing.T) {
 	temp := 0
-	evict := func(key interface{}, value interface{}) {
-		temp = key.(int) + value.(int)
+	evict := func(key int, value int) {
+		temp = key + value
 	}
 
-	c := NewLRUCache(WithEvict(evict), WithSize(1))
+	c := New[int, int](WithEvict[int, int](evict), WithSize[int, int](1))
 	c.Set(1, 2)
 	c.Set(2, 3)
 
 	assert.Equal(t, temp, 3)
 }
+
+func TestSetWithExpire(t *testing.T) {
+	c := New[int, *struct{}](WithAge[int, *struct{}](1))
+	now := time.Now().Unix()
+
+	tenSecBefore := time.Unix(now-10, 0)
+	c.SetWithExpire(1, &struct{}{}, tenSecBefore)
+
+	// res is expected not to exist, and expires should be empty time.Time
+	res, expires, exist := c.GetWithExpire(1)
+
+	assert.True(t, nil == res)
+	assert.Equal(t, time.Time{}, expires)
+	assert.Equal(t, false, exist)
+}
+
+func TestStale(t *testing.T) {
+	c := New[int, int](WithAge[int, int](1), WithStale[int, int](true))
+	now := time.Now().Unix()
+
+	tenSecBefore := time.Unix(now-10, 0)
+	c.SetWithExpire(1, 2, tenSecBefore)
+
+	res, expires, exist := c.GetWithExpire(1)
+	assert.Equal(t, 2, res)
+	assert.Equal(t, tenSecBefore, expires)
+	assert.Equal(t, true, exist)
+}
+
+func TestCloneTo(t *testing.T) {
+	o := New[string, int](WithSize[string, int](10))
+	o.Set("1", 1)
+	o.Set("2", 2)
+
+	n := New[string, int](WithSize[string, int](2))
+	n.Set("3", 3)
+	n.Set("4", 4)
+
+	o.CloneTo(n)
+
+	assert.False(t, n.Exist("3"))
+	assert.True(t, n.Exist("1"))
+
+	n.Set("5", 5)
+	assert.False(t, n.Exist("1"))
+}

common/callback/callback.go

@@ -0,0 +1,55 @@
+package callback
+
+import (
+	"github.com/Dreamacro/clash/common/buf"
+	N "github.com/Dreamacro/clash/common/net"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type firstWriteCallBackConn struct {
+	C.Conn
+	callback func(error)
+	written  bool
+}
+
+func (c *firstWriteCallBackConn) Write(b []byte) (n int, err error) {
+	defer func() {
+		if !c.written {
+			c.written = true
+			c.callback(err)
+		}
+	}()
+	return c.Conn.Write(b)
+}
+
+func (c *firstWriteCallBackConn) WriteBuffer(buffer *buf.Buffer) (err error) {
+	defer func() {
+		if !c.written {
+			c.written = true
+			c.callback(err)
+		}
+	}()
+	return c.Conn.WriteBuffer(buffer)
+}
+
+func (c *firstWriteCallBackConn) Upstream() any {
+	return c.Conn
+}
+
+func (c *firstWriteCallBackConn) WriterReplaceable() bool {
+	return c.written
+}
+
+func (c *firstWriteCallBackConn) ReaderReplaceable() bool {
+	return true
+}
+
+var _ N.ExtendedConn = (*firstWriteCallBackConn)(nil)
+
+func NewFirstWriteCallBackConn(c C.Conn, callback func(error)) C.Conn {
+	return &firstWriteCallBackConn{
+		Conn:     c,
+		callback: callback,
+		written:  false,
+	}
+}

common/cmd/cmd.go

@@ -0,0 +1,36 @@
+package cmd
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+func ExecCmd(cmdStr string) (string, error) {
+	args := splitArgs(cmdStr)
+
+	var cmd *exec.Cmd
+	if len(args) == 1 {
+		cmd = exec.Command(args[0])
+	} else {
+		cmd = exec.Command(args[0], args[1:]...)
+
+	}
+	prepareBackgroundCommand(cmd)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", fmt.Errorf("%v, %s", err, string(out))
+	}
+	return string(out), nil
+}
+
+func splitArgs(cmd string) []string {
+	args := strings.Split(cmd, " ")
+
+	// use in pipeline
+	if len(args) > 2 && strings.ContainsAny(cmd, "|") {
+		suffix := strings.Join(args[2:], " ")
+		args = append(args[:2], suffix)
+	}
+	return args
+}

common/cmd/cmd_other.go

@@ -0,0 +1,11 @@
+//go:build !windows
+
+package cmd
+
+import (
+	"os/exec"
+)
+
+func prepareBackgroundCommand(cmd *exec.Cmd) {
+
+}

common/cmd/cmd_test.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"runtime"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSplitArgs(t *testing.T) {
+	args := splitArgs("ls")
+	args1 := splitArgs("ls -la")
+	args2 := splitArgs("bash -c ls")
+	args3 := splitArgs("bash -c ls -lahF | grep 'cmd'")
+
+	assert.Equal(t, 1, len(args))
+	assert.Equal(t, 2, len(args1))
+	assert.Equal(t, 3, len(args2))
+	assert.Equal(t, 3, len(args3))
+}
+
+func TestExecCmd(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		_, err := ExecCmd("cmd -c 'dir'")
+		assert.Nil(t, err)
+		return
+	}
+
+	_, err := ExecCmd("ls")
+	_, err1 := ExecCmd("ls -la")
+	_, err2 := ExecCmd("bash -c ls")
+	_, err3 := ExecCmd("bash -c ls -la")
+	_, err4 := ExecCmd("bash -c ls -la | grep 'cmd'")
+
+	assert.Nil(t, err)
+	assert.Nil(t, err1)
+	assert.Nil(t, err2)
+	assert.Nil(t, err3)
+	assert.Nil(t, err4)
+}

common/cmd/cmd_windows.go

@@ -0,0 +1,12 @@
+//go:build windows
+
+package cmd
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+func prepareBackgroundCommand(cmd *exec.Cmd) {
+	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
+}

common/collections/stack.go

@@ -0,0 +1,56 @@
+package collections
+
+import "sync"
+
+type (
+	stack struct {
+		top    *node
+		length int
+		lock   *sync.RWMutex
+	}
+
+	node struct {
+		value interface{}
+		prev  *node
+	}
+)
+
+// NewStack Create a new stack
+func NewStack() *stack {
+	return &stack{nil, 0, &sync.RWMutex{}}
+}
+
+// Len Return the number of items in the stack
+func (this *stack) Len() int {
+	return this.length
+}
+
+// Peek View the top item on the stack
+func (this *stack) Peek() interface{} {
+	if this.length == 0 {
+		return nil
+	}
+	return this.top.value
+}
+
+// Pop the top item of the stack and return it
+func (this *stack) Pop() interface{} {
+	this.lock.Lock()
+	defer this.lock.Unlock()
+	if this.length == 0 {
+		return nil
+	}
+	n := this.top
+	this.top = n.prev
+	this.length--
+	return n.value
+}
+
+// Push a value onto the top of the stack
+func (this *stack) Push(value interface{}) {
+	this.lock.Lock()
+	defer this.lock.Unlock()
+	n := &node{value, this.top}
+	this.top = n
+	this.length++
+}

common/convert/base64.go

@@ -0,0 +1,45 @@
+package convert
+
+import (
+	"encoding/base64"
+	"strings"
+)
+
+var (
+	encRaw = base64.RawStdEncoding
+	enc    = base64.StdEncoding
+)
+
+// DecodeBase64 try to decode content from the given bytes,
+// which can be in base64.RawStdEncoding, base64.StdEncoding or just plaintext.
+func DecodeBase64(buf []byte) []byte {
+	result, err := tryDecodeBase64(buf)
+	if err != nil {
+		return buf
+	}
+	return result
+}
+
+func tryDecodeBase64(buf []byte) ([]byte, error) {
+	dBuf := make([]byte, encRaw.DecodedLen(len(buf)))
+	n, err := encRaw.Decode(dBuf, buf)
+	if err != nil {
+		n, err = enc.Decode(dBuf, buf)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return dBuf[:n], nil
+}
+
+func urlSafe(data string) string {
+	return strings.NewReplacer("+", "-", "/", "_").Replace(data)
+}
+
+func decodeUrlSafe(data string) string {
+	dcBuf, err := base64.RawURLEncoding.DecodeString(data)
+	if err != nil {
+		return ""
+	}
+	return string(dcBuf)
+}