Chore: update dependencies

Change-Id: I40aa73dcea692132e38db980320a8a07ed427fe6

Co-authored-by: Zhao Guowei <zhaoguowei@bytedance.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,96 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: "[Bug]"
-labels: ''
-assignees: ''
-
----
-
-<!-- The English version is available. -->
-感谢你向 Clash Core 提交 issue！
-在提交之前，请确认：
-
-- [ ] 我已经在 [Issue Tracker](……/) 中找过我要提出的问题
-- [ ] 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
-- [ ] 我已经使用 Clash core 的 dev 分支版本测试过，问题依旧存在
-- [ ] 如果你可以自己 debug 并解决的话，提交 PR 吧！
-
-请注意，如果你并没有遵照这个 issue template 填写内容，我们将直接关闭这个 issue。
-
-<!--
-Thanks for submitting an issue towards the Clash core!
-But before so, please do the following checklist:
-
-- [ ] Is this something you can **debug and fix**? Send a pull request! Bug fixes and documentation fixes are welcome.
-- [ ] Your issue may already be reported! Please search on the [issue tracker](……/) before creating one.
-- [ ] I have tested using the dev branch, and the issue still exists.
-- [ ] This is an issue related to the Clash core, not to the derivatives of Clash, like Openclash or Koolclash
-
-Please understand that we close issues that fail to follow the issue template.
--->
-
-我都确认过了，我要继续提交。
-<!-- None of the above, create a bug report -->
-------------------------------------------------------------------
-
-请附上任何可以帮助我们解决这个问题的信息，如果我们收到的信息不足，我们将对这个 issue 加上 *Needs more information* 标记并在收到更多资讯之前关闭 issue。
-<!-- Make sure to add **all the information needed to understand the bug** so that someone can help. If the info is missing we'll add the 'Needs more information' label and close the issue until there is enough information. -->
-
-### clash core config
-<!--
-在下方附上 Clash core 脱敏后配置文件的内容
-Paste the Clash core configuration below.
--->
-```
-……
-```
-
-### Clash log
-<!--
-在下方附上 Clash Core 的日志，log level 最好使用 DEBUG
-Paste the Clash core log below with the log level set to `DEBUG`.
--->
-```
-……
-```
-
-### 环境 Environment
-
-* Clash Core 的操作系统 (the OS that the Clash core is running on)
-……
-* 使用者的操作系统 (the OS running on the client)
-……
-* 网路环境或拓扑 (network conditions/topology)
-……
-* iptables，如果适用 (if applicable)
-……
-* ISP 有没有进行 DNS 污染 (is your ISP performing DNS pollution?)
-……
-* 其他
-……
-
-### 说明 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？
--->
-
-### 重现问题的具体布骤 Steps to Reproduce
-
-1. [First Step]
-2. [Second Step]
-3. ……
-
-**我预期会发生……？**
-<!-- **Expected behavior:** [What you expected to happen] -->
-
-**实际上发生了什麽？**
-<!-- **Actual behavior:** [What actually happened] -->
-
-### 可能的解决方案 Possible Solution
-<!-- 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 -->
-
-### 更多信息 More Information

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,76 @@
+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: "
+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: true
+        - 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 dev 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://github.com/Dreamacro/clash/wiki/) 并无法自行解决问题
+I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) 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
+    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 脱敏后配置文件的内容
+Paste the Clash core configuration below.
+"
+    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/config.yml

@@ -0,0 +1,6 @@
+blank_issues_enabled: false
+
+contact_links:
+  - name: Get help in GitHub Discussions
+    url: https://github.com/Dreamacro/clash/discussions
+    about: Have a question? Not sure if your issue affects everyone reproducibly? The quickest way to get help is on Clash's GitHub Discussions!

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,78 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: "[Feature]"
-labels: ''
-assignees: ''
-
----
-
-<!-- The English version is available. -->
-感谢你向 Clash Core 提交 Feature Request！
-在提交之前，请确认：
-
-- [ ] 我已经在 [Issue Tracker](……/) 中找过我要提出的请求
-
-请注意，如果你并没有遵照这个 issue template 填写内容，我们将直接关闭这个 issue。
-
-<!--
-Thanks for submitting a feature request towards the Clash core!
-But before so, please do the following checklist:
-
-- [ ] I have searched on the [issue tracker](……/) before creating the issue.
-
-Please understand that we close issues that fail to follow the issue template.
--->
-
-我都确认过了，我要继续提交。
-<!-- None of the above, create a feature request -->
-------------------------------------------------------------------
-
-请附上任何可以帮助我们解决这个问题的信息，如果我们收到的信息不足，我们将对这个 issue 加上 *Needs more information* 标记并在收到更多资讯之前关闭 issue。
-<!-- Make sure to add **all the information needed to understand the bug** so that someone can help. If the info is missing we'll add the 'Needs more information' label and close the issue until there is enough information. -->
-
-### Clash core config
-<!--
-在下方附上 Clash Core 脱敏后的配置内容
-Paste the Clash core configuration below.
--->
-```
-……
-```
-
-### Clash log
-<!--
-在下方附上 Clash Core 的日志，log level 请使用 DEBUG
-Paste the Clash core log below with the log level set to `DEBUG`.
--->
-```
-……
-```
-
-### 环境 Environment
-
-* Clash Core 的操作系统 (the OS that the Clash core is running on)
-……
-* 使用者的操作系统 (the OS running on the client)
-……
-* 网路环境或拓扑 (network conditions/topology)
-……
-* iptables，如果适用 (if applicable)
-……
-* ISP 有没有进行 DNS 污染 (is your ISP performing DNS pollution?)
-……
-* 其他
-……
-
-### 说明 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？
--->
-
-### 可能的解决方案 Possible Solution
-<!-- 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 -->
-
-### 更多信息 More Information

.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://github.com/Dreamacro/clash/wiki/) 并无法自行解决问题
+I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) 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/workflows/codeql-analysis.yml

@@ -0,0 +1,30 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [master, dev]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ['go']
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/docker.yml

@@ -0,0 +1,80 @@
+name: Publish Docker Image
+on:
+  push:
+    branches:
+      - dev
+    tags:
+      - '*'
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+
+      - name: Set up docker buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          version: latest
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      
+      - name: Login to Github Package
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: Dreamacro
+          password: ${{ secrets.PACKAGE_TOKEN }}
+
+      - name: Build dev branch and push
+        if: github.ref == 'refs/heads/dev'
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
+          push: true
+          tags: 'dreamacro/clash:dev,ghcr.io/dreamacro/clash:dev'
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Get all docker tags
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: actions/github-script@v6
+        id: tags
+        with:
+          script: |
+            const ref = context.payload.ref.replace(/\/?refs\/tags\//, '')
+            const tags = [
+              'dreamacro/clash:latest',
+              `dreamacro/clash:${ref}`,
+              'ghcr.io/dreamacro/clash:latest',
+              `ghcr.io/dreamacro/clash:${ref}`
+            ]
+            return tags.join(',')
+          result-encoding: string
+
+      - name: Build release and push
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
+          push: true
+          tags: ${{steps.tags.outputs.result}}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/linter.yml

@@ -0,0 +1,22 @@
+name: Linter
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Get latest go version
+        id: version
+        run: |
+          echo ::set-output name=go_version::$(curl -s https://raw.githubusercontent.com/actions/go-versions/main/versions-manifest.json | grep -oE '"version": "[0-9]{1}.[0-9]{1,}(.[0-9]{1,})?"' | head -1 | cut -d':' -f2 | sed 's/ //g; s/"//g')
+
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ steps.version.outputs.go_version }}
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest

.github/workflows/release.yml

@@ -1,28 +1,33 @@
-name: Go
-on: [push, pull_request]
+name: Release
+on: [push]
 jobs:
-
   build:
-    name: Build
     runs-on: ubuntu-latest
     steps:
+      - name: Get latest go version
+        id: version
+        run: |
+          echo ::set-output name=go_version::$(curl -s https://raw.githubusercontent.com/actions/go-versions/main/versions-manifest.json | grep -oE '"version": "[0-9]{1}.[0-9]{1,}(.[0-9]{1,})?"' | head -1 | cut -d':' -f2 | sed 's/ //g; s/"//g')
+
       - name: Setup Go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v2
         with:
-          go-version: 1.14.x
+          go-version: ${{ steps.version.outputs.go_version }}
 
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v1
+        uses: actions/checkout@v3
 
       - name: Cache go module
-        uses: actions/cache@v1
+        uses: actions/cache@v2
         with:
-          path: ~/go/pkg/mod
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
 
-      - name: Get dependencies and run test
+      - name: Get dependencies, run test
         run: |
           go test ./...
 
@@ -36,9 +41,6 @@ jobs:
       - 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

.github/workflows/stale.yml

@@ -0,0 +1,18 @@
+  
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+    - cron: "30 1 * * *"
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/stale@v5
+        with:
+          stale-issue-message: 'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 5 days'
+          days-before-stale: 60
+          days-before-close: 5

.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 +20,6 @@ vendor
 
 # macOS file
 .DS_Store
+
+# test suite
+test/config/cache*

.golangci.yaml

@@ -0,0 +1,16 @@
+linters:
+  disable-all: true
+  enable:
+    - gofumpt
+    - staticcheck
+    - govet
+    - gci
+
+linters-settings:
+  gci:
+    sections:
+      - standard
+      - prefix(github.com/Dreamacro/clash)
+      - default
+  staticcheck:
+    go: '1.18'

Dockerfile

@@ -3,14 +3,16 @@ FROM golang:alpine as builder
 RUN apk add --no-cache make git && \
     wget -O /Country.mmdb https://github.com/Dreamacro/maxmind-geoip/releases/latest/download/Country.mmdb
 WORKDIR /clash-src
+COPY --from=tonistiigi/xx:golang / /
 COPY . /clash-src
 RUN go mod download && \
-    make linux-amd64 && \
-    mv ./bin/clash-linux-amd64 /clash
+    make docker && \
+    mv ./bin/clash-docker /clash
 
 FROM alpine:latest
+LABEL org.opencontainers.image.source="https://github.com/Dreamacro/clash"
 
-RUN apk add --no-cache ca-certificates
+RUN apk add --no-cache ca-certificates tzdata
 COPY --from=builder /Country.mmdb /root/.config/clash/
 COPY --from=builder /clash /
 ENTRYPOINT ["/clash"]

Dockerfile.arm32v7

@@ -1,20 +0,0 @@
-FROM golang:alpine as builder
-
-RUN apk add --no-cache make git && \
-    wget -O /Country.mmdb https://github.com/Dreamacro/maxmind-geoip/releases/latest/download/Country.mmdb && \
-    wget -O /qemu-arm-static https://github.com/multiarch/qemu-user-static/releases/latest/download/qemu-arm-static && \
-    chmod +x /qemu-arm-static
-
-WORKDIR /clash-src
-COPY . /clash-src
-RUN go mod download && \
-    make linux-armv7 && \
-    mv ./bin/clash-linux-armv7 /clash
-
-FROM arm32v7/alpine:latest
-
-COPY --from=builder /qemu-arm-static /usr/bin/
-COPY --from=builder /Country.mmdb /root/.config/clash/
-COPY --from=builder /clash /
-RUN apk add --no-cache ca-certificates
-ENTRYPOINT ["/clash"]

Dockerfile.arm64v8

@@ -1,20 +0,0 @@
-FROM golang:alpine as builder
-
-RUN apk add --no-cache make git && \
-    wget -O /Country.mmdb https://github.com/Dreamacro/maxmind-geoip/releases/latest/download/Country.mmdb && \
-    wget -O /qemu-aarch64-static https://github.com/multiarch/qemu-user-static/releases/latest/download/qemu-aarch64-static && \
-    chmod +x /qemu-aarch64-static
-
-WORKDIR /clash-src
-COPY . /clash-src
-RUN go mod download && \
-    make linux-armv8 && \
-    mv ./bin/clash-linux-armv8 /clash
-
-FROM arm64v8/alpine:latest
-
-COPY --from=builder /qemu-aarch64-static /usr/bin/
-COPY --from=builder /Country.mmdb /root/.config/clash/
-COPY --from=builder /clash /
-RUN apk add --no-cache ca-certificates
-ENTRYPOINT ["/clash"]

Makefile

@@ -2,14 +2,17 @@ NAME=clash
 BINDIR=bin
 VERSION=$(shell git describe --tags || echo "unknown version")
 BUILDTIME=$(shell date -u)
-GOBUILD=CGO_ENABLED=0 go build -ldflags '-X "github.com/Dreamacro/clash/constant.Version=$(VERSION)" \
+GOBUILD=CGO_ENABLED=0 go build -trimpath -ldflags '-X "github.com/Dreamacro/clash/constant.Version=$(VERSION)" \
 		-X "github.com/Dreamacro/clash/constant.BuildTime=$(BUILDTIME)" \
-		-w -s'
+		-w -s -buildid='
 
 PLATFORM_LIST = \
 	darwin-amd64 \
+	darwin-amd64-v3 \
+	darwin-arm64 \
 	linux-386 \
 	linux-amd64 \
+	linux-amd64-v3 \
 	linux-armv5 \
 	linux-armv6 \
 	linux-armv7 \
@@ -21,23 +24,40 @@ PLATFORM_LIST = \
 	linux-mips64 \
 	linux-mips64le \
 	freebsd-386 \
-	freebsd-amd64
+	freebsd-amd64 \
+	freebsd-amd64-v3 \
+	freebsd-arm64
 
 WINDOWS_ARCH_LIST = \
 	windows-386 \
-	windows-amd64
+	windows-amd64 \
+	windows-amd64-v3 \
+	windows-arm64 \
+	windows-arm32v7
 
 all: linux-amd64 darwin-amd64 windows-amd64 # Most used
 
+docker:
+	$(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
 darwin-amd64:
 	GOARCH=amd64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
+darwin-amd64-v3:
+	GOARCH=amd64 GOOS=darwin GOAMD64=v3 $(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)-$@
 
+linux-amd64-v3:
+	GOARCH=amd64 GOOS=linux GOAMD64=v3 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
 linux-armv5:
 	GOARCH=arm GOOS=linux GOARM=5 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
@@ -74,12 +94,27 @@ freebsd-386:
 freebsd-amd64:
 	GOARCH=amd64 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
+freebsd-amd64-v3:
+	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
 
+windows-amd64-v3:
+	GOARCH=amd64 GOOS=windows GOAMD64=v3 $(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 +128,13 @@ $(zip_releases): %.zip : %
 all-arch: $(PLATFORM_LIST) $(WINDOWS_ARCH_LIST)
 
 releases: $(gz_releases) $(zip_releases)
+
+lint:
+	GOOS=darwin golangci-lint run ./...
+	GOOS=windows golangci-lint run ./...
+	GOOS=linux golangci-lint run ./...
+	GOOS=freebsd golangci-lint run ./...
+	GOOS=openbsd golangci-lint run ./...
+
 clean:
 	rm $(BINDIR)/*

README.md

@@ -12,382 +12,49 @@
   <a href="https://goreportcard.com/report/github.com/Dreamacro/clash">
     <img src="https://goreportcard.com/badge/github.com/Dreamacro/clash?style=flat-square">
   </a>
+  <img src="https://img.shields.io/github/go-mod/go-version/Dreamacro/clash?style=flat-square">
   <a href="https://github.com/Dreamacro/clash/releases">
     <img src="https://img.shields.io/github/release/Dreamacro/clash/all.svg?style=flat-square">
   </a>
+  <a href="https://github.com/Dreamacro/clash/releases/tag/premium">
+    <img src="https://img.shields.io/badge/release-Premium-00b4f0?style=flat-square">
+  </a>
 </p>
 
 ## Features
 
-- Local HTTP/HTTPS/SOCKS server with/without authentication
-- VMess, Shadowsocks, Trojan (experimental), Snell protocol support for remote connections. UDP is supported.
-- Built-in DNS server that aims to minimize DNS pollution attacks, supports DoH/DoT upstream. Fake IP is also supported.
-- Rules based off domains, GEOIP, IP CIDR or ports to forward packets to different nodes
+- Local HTTP/HTTPS/SOCKS server with authentication support
+- VMess, Shadowsocks, Trojan, Snell protocol support for remote connections
+- 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 hardcoding in config
-- Netfilter TCP redirecting. You can deploy Clash on your Internet gateway with `iptables`.
-- Comprehensive HTTP API controller
+- Netfilter TCP redirecting. Deploy Clash on your Internet gateway with `iptables`.
+- Comprehensive HTTP RESTful API controller
 
-## Install
+## Premium Features
 
-Clash requires Go >= 1.13. You can build it from source:
+- TUN mode on macOS, Linux and Windows. [Doc](https://github.com/Dreamacro/clash/wiki/premium-core-features#tun-device)
+- Match your tunnel by [Script](https://github.com/Dreamacro/clash/wiki/premium-core-features#script)
+- [Rule Provider](https://github.com/Dreamacro/clash/wiki/premium-core-features#rule-providers)
 
-```sh
-$ go get -u -v github.com/Dreamacro/clash
-```
+## Getting Started
+Documentations are now moved to [GitHub Wiki](https://github.com/Dreamacro/clash/wiki).
 
-Pre-built binaries are available here: [release](https://github.com/Dreamacro/clash/releases)  
-Pre-built TUN mode binaries are available here: [TUN release](https://github.com/Dreamacro/clash/releases/tag/TUN). Source is not currently available.
+## Premium Release
+[Release](https://github.com/Dreamacro/clash/releases/tag/premium)
 
-Check Clash version with:
-
-```sh
-$ clash -v
-```
-
-## Daemonize Clash
-
-Unfortunately, there is no native or elegant way to implement daemons on Golang. We recommend using third-party daemon management tools like PM2, Supervisor or the like to keep Clash running as a service.
-
-In the case of [pm2](https://github.com/Unitech/pm2), start the daemon this way:
-
-```sh
-$ pm2 start clash
-```
-
-If you have Docker installed, it's recommended to deploy Clash directly using `docker-compose`: [run Clash in Docker](https://github.com/Dreamacro/clash/wiki/Run-clash-in-docker)
-
-## Config
-
-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 .
-```
-
-<details>
-  <summary>This is an example configuration file (click to expand)</summary>
-
-```yml
-# port of HTTP
-port: 7890
-
-# port of SOCKS5
-socks-port: 7891
-
-# 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
-  # interface-name: en0 # outbound interface name
-
-# 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 > .example.com)
-# hosts:
-#   '*.clash.dev': 127.0.0.1
-#   '.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
-  # # default-nameserver: # resolve dns nameserver host, should fill pure IP
-  # #   - 114.114.114.114
-  # #   - 8.8.8.8
-  # 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
-
-proxies:
-  # 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
-  
-  - name: "vmess-http"
-    type: vmess
-    server: server
-    port: 443
-    uuid: uuid
-    alterId: 32
-    cipher: auto
-    # udp: true
-    # network: http
-    # http-opts:
-    #   # method: "GET"
-    #   # path:
-    #   #   - '/'
-    #   #   - '/video'
-    #   # headers:
-    #   #   Connection:
-    #   #     - keep-alive
-
-  # 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
-
-  # trojan
-  - name: "trojan"
-    type: trojan
-    server: server
-    port: 443
-    password: yourpsk
-    # udp: true
-    # sni: example.com # aka server name
-    # alpn:
-    #   - h2
-    #   - http/1.1
-    # skip-cert-verify: true
-
-proxy-groups:
-  # relay chains the proxies. proxies shall not contain a relay. No UDP support.
-  # Traffic: clash <-> http <-> vmess <-> ss1 <-> ss2 <-> Internet
-  - name: "relay"
-    type: relay
-    proxies:
-      - http
-      - vmess
-      - ss1
-      - ss2
-
-  # 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
-  
-  - name: UseProvider
-    type: select
-    use:
-      - provider1
-    proxies:
-      - Proxy
-      - DIRECT
-
-proxy-providers:
-  provider1:
-    type: http
-    url: "url"
-    interval: 3600
-    path: ./hk.yaml
-    health-check:
-      enable: true
-      interval: 600
-      url: http://www.gstatic.com/generate_204
-  test:
-    type: file
-    path: /test.yaml
-    health-check:
-      enable: true
-      interval: 36000
-      url: http://www.gstatic.com/generate_204
-
-rules:
-  - 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/
+## Development
+If you want to build an application that uses clash as a library, check out the the [GitHub Wiki](https://github.com/Dreamacro/clash/wiki/use-clash-as-a-library)
 
 ## Credits
 
-[riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
-
-[v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
+* [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)
 
 ## 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

@@ -1,129 +1,61 @@
-package outbound
+package adapter
 
 import (
 	"context"
 	"encoding/json"
-	"errors"
+	"fmt"
 	"net"
 	"net/http"
+	"net/url"
 	"time"
 
 	"github.com/Dreamacro/clash/common/queue"
+	"github.com/Dreamacro/clash/component/dialer"
 	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
 )
 
-var (
-	defaultURLTestTimeout = time.Second * 5
-)
-
-type Base struct {
-	name string
-	addr 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) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	return c, errors.New("no support")
-}
-
-func (b *Base) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	return 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 (b *Base) Addr() string {
-	return b.addr
-}
-
-func (b *Base) Unwrap(metadata *C.Metadata) C.Proxy {
-	return nil
-}
-
-func NewBase(name string, addr string, tp C.AdapterType, udp bool) *Base {
-	return &Base{name, addr, 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 interface {
-	net.PacketConn
-	WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error)
-}
-
-type packetConn struct {
-	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(pc PacketConn, a C.ProxyAdapter) C.PacketConn {
-	return &packetConn{pc, []string{a.Name()}}
-}
-
 type Proxy struct {
 	C.ProxyAdapter
 	history *queue.Queue
-	alive   bool
+	alive   *atomic.Bool
 }
 
+// Alive implements C.Proxy
 func (p *Proxy) Alive() bool {
-	return p.alive
+	return p.alive.Load()
 }
 
+// Dial implements C.Proxy
 func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
 	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
-	}
+// 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...)
+	p.alive.Store(err == nil)
 	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...)
+	p.alive.Store(err == nil)
+	return pc, err
+}
+
+// DelayHistory implements C.Proxy
 func (p *Proxy) DelayHistory() []C.DelayHistory {
 	queue := p.history.Copy()
 	histories := []C.DelayHistory{}
@@ -134,9 +66,10 @@ func (p *Proxy) DelayHistory() []C.DelayHistory {
 }
 
 // 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 {
+	if !p.alive.Load() {
 		return max
 	}
 
@@ -151,23 +84,26 @@ func (p *Proxy) LastDelay() (delay uint16) {
 	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]interface{}{}
+	mapping := map[string]any{}
 	json.Unmarshal(inner, &mapping)
 	mapping["history"] = p.DelayHistory()
 	mapping["name"] = p.Name()
+	mapping["udp"] = p.SupportUDP()
 	return json.Marshal(mapping)
 }
 
 // URLTest get the delay for the specified URL
+// implements C.Proxy
 func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 	defer func() {
-		p.alive = err == nil
+		p.alive.Store(err == nil)
 		record := C.DelayHistory{Time: time.Now()}
 		if err == nil {
 			record.Delay = t
@@ -213,6 +149,8 @@ func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 			return http.ErrUseLastResponse
 		},
 	}
+	defer client.CloseIdleConnections()
+
 	resp, err := client.Do(req)
 	if err != nil {
 		return
@@ -223,5 +161,32 @@ func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 }
 
 func NewProxy(adapter C.ProxyAdapter) *Proxy {
-	return &Proxy{adapter, queue.New(10), true}
+	return &Proxy{adapter, queue.New(10), atomic.NewBool(true)}
+}
+
+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{
+		Host:    u.Hostname(),
+		DstIP:   nil,
+		DstPort: port,
+	}
+	return
 }

adapter/inbound/http.go

@@ -0,0 +1,21 @@
+package inbound
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/context"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+// NewHTTP receive normal http request and return HTTPContext
+func NewHTTP(target socks5.Addr, source net.Addr, conn net.Conn) *context.ConnContext {
+	metadata := parseSocksAddr(target)
+	metadata.NetWork = C.TCP
+	metadata.Type = C.HTTP
+	if ip, port, err := parseAddr(source.String()); err == nil {
+		metadata.SrcIP = ip
+		metadata.SrcPort = port
+	}
+	return context.NewConnContext(conn, metadata)
+}

adapter/inbound/https.go

@@ -5,18 +5,16 @@ import (
 	"net/http"
 
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/context"
 )
 
-// NewHTTPS is HTTPAdapter generator
-func NewHTTPS(request *http.Request, conn net.Conn) *SocketAdapter {
+// NewHTTPS receive CONNECT request and return ConnContext
+func NewHTTPS(request *http.Request, conn net.Conn) *context.ConnContext {
 	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,
-	}
+	return context.NewConnContext(conn, metadata)
 }

adapter/inbound/packet.go

@@ -1,8 +1,8 @@
 package inbound
 
 import (
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 // PacketAdapter is a UDP Packet adapter for socks/redir/tun

adapter/inbound/socket.go

@@ -0,0 +1,22 @@
+package inbound
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/context"
+	"github.com/Dreamacro/clash/transport/socks5"
+)
+
+// NewSocket receive TCP inbound and return ConnContext
+func NewSocket(target socks5.Addr, conn net.Conn, source C.Type) *context.ConnContext {
+	metadata := parseSocksAddr(target)
+	metadata.NetWork = C.TCP
+	metadata.Type = source
+	if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
+		metadata.SrcIP = ip
+		metadata.SrcPort = port
+	}
+
+	return context.NewConnContext(conn, metadata)
+}

adapter/inbound/util.go

@@ -4,19 +4,19 @@ import (
 	"net"
 	"net/http"
 	"strconv"
+	"strings"
 
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 func parseSocksAddr(target socks5.Addr) *C.Metadata {
-	metadata := &C.Metadata{
-		AddrType: int(target[0]),
-	}
+	metadata := &C.Metadata{}
 
 	switch target[0] {
 	case socks5.AtypDomainName:
-		metadata.Host = string(target[2 : 2+target[1]])
+		// trim for FQDN
+		metadata.Host = strings.TrimRight(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])
@@ -38,22 +38,17 @@ func parseHTTPAddr(request *http.Request) *C.Metadata {
 		port = "80"
 	}
 
+	// trim FQDN (#737)
+	host = strings.TrimRight(host, ".")
+
 	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
-		}
+	if ip := net.ParseIP(host); ip != nil {
 		metadata.DstIP = ip
 	}
 

adapter/outbound/base.go

@@ -0,0 +1,138 @@
+package outbound
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net"
+
+	"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
+	rmark int
+}
+
+// Name implements C.ProxyAdapter
+func (b *Base) Name() string {
+	return b.name
+}
+
+// Type implements C.ProxyAdapter
+func (b *Base) Type() C.AdapterType {
+	return b.tp
+}
+
+// StreamConn implements C.ProxyAdapter
+func (b *Base) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	return c, errors.New("no support")
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	return nil, errors.New("no support")
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (b *Base) SupportUDP() bool {
+	return b.udp
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (b *Base) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]string{
+		"type": b.Type().String(),
+	})
+}
+
+// Addr implements C.ProxyAdapter
+func (b *Base) Addr() string {
+	return b.addr
+}
+
+// Unwrap implements C.ProxyAdapter
+func (b *Base) Unwrap(metadata *C.Metadata) 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))
+	}
+
+	return opts
+}
+
+type BasicOption struct {
+	Interface   string `proxy:"interface-name,omitempty" group:"interface-name,omitempty"`
+	RoutingMark int    `proxy:"routing-mark,omitempty" group:"routing-mark,omitempty"`
+}
+
+type BaseOption struct {
+	Name        string
+	Addr        string
+	Type        C.AdapterType
+	UDP         bool
+	Interface   string
+	RoutingMark int
+}
+
+func NewBase(opt BaseOption) *Base {
+	return &Base{
+		name:  opt.Name,
+		addr:  opt.Addr,
+		tp:    opt.Type,
+		udp:   opt.UDP,
+		iface: opt.Interface,
+		rmark: opt.RoutingMark,
+	}
+}
+
+type conn struct {
+	net.Conn
+	chain C.Chain
+}
+
+// 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 NewConn(c net.Conn, a C.ProxyAdapter) C.Conn {
+	return &conn{c, []string{a.Name()}}
+}
+
+type packetConn struct {
+	net.PacketConn
+	chain C.Chain
+}
+
+// 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 newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
+	return &packetConn{pc, []string{a.Name()}}
+}

adapter/outbound/direct.go

@@ -0,0 +1,46 @@
+package outbound
+
+import (
+	"context"
+	"net"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Direct struct {
+	*Base
+}
+
+// DialContext implements C.ProxyAdapter
+func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	c, err := dialer.DialContext(ctx, "tcp", metadata.RemoteAddress(), d.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	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) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "", d.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	return newPacketConn(&directPacketConn{pc}, d), nil
+}
+
+type directPacketConn struct {
+	net.PacketConn
+}
+
+func NewDirect() *Direct {
+	return &Direct{
+		Base: &Base{
+			name: "DIRECT",
+			tp:   C.Direct,
+			udp:  true,
+		},
+	}
+}

adapter/outbound/http.go

@@ -25,15 +25,18 @@ type Http struct {
 }
 
 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"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (h *Http) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	if h.tlsConfig != nil {
 		cc := tls.Client(c, h.tlsConfig)
@@ -50,13 +53,16 @@ func (h *Http) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	return c, nil
 }
 
-func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", h.addr)
+// DialContext implements C.ProxyAdapter
+func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	c, err := dialer.DialContext(ctx, "tcp", h.addr, h.Base.DialOptions(opts...)...)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", h.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = h.StreamConn(c, metadata)
 	if err != nil {
 		return nil, err
@@ -114,10 +120,13 @@ func (h *Http) shakeHand(metadata *C.Metadata, rw io.ReadWriter) error {
 func NewHttp(option HttpOption) *Http {
 	var tlsConfig *tls.Config
 	if option.TLS {
+		sni := option.Server
+		if option.SNI != "" {
+			sni = option.SNI
+		}
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
-			ServerName:         option.Server,
+			ServerName:         sni,
 		}
 	}
 
@@ -126,6 +135,8 @@ func NewHttp(option HttpOption) *Http {
 			name:  option.Name,
 			addr:  net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
 			tp:    C.Http,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
 		},
 		user:      option.UserName,
 		pass:      option.Password,

adapter/outbound/reject.go

@@ -0,0 +1,62 @@
+package outbound
+
+import (
+	"context"
+	"io"
+	"net"
+	"time"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Reject struct {
+	*Base
+}
+
+// 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 NewReject() *Reject {
+	return &Reject{
+		Base: &Base{
+			name: "REJECT",
+			tp:   C.Reject,
+			udp:  true,
+		},
+	}
+}
+
+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
+}
+
+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 }
+
+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) Close() error                                       { return nil }
+func (npc *nopPacketConn) LocalAddr() net.Addr                                { return &net.UDPAddr{IP: net.IPv4zero, Port: 0} }
+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

@@ -2,7 +2,6 @@ package outbound
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net"
@@ -10,12 +9,11 @@ import (
 
 	"github.com/Dreamacro/clash/common/structure"
 	"github.com/Dreamacro/clash/component/dialer"
-	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"
+	"github.com/Dreamacro/clash/transport/shadowsocks/core"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	"github.com/Dreamacro/clash/transport/socks5"
+	v2rayObfs "github.com/Dreamacro/clash/transport/v2ray-plugin"
 )
 
 type ShadowSocks struct {
@@ -29,6 +27,7 @@ type ShadowSocks struct {
 }
 
 type ShadowSocksOption struct {
+	BasicOption
 	Name       string         `proxy:"name"`
 	Server     string         `proxy:"server"`
 	Port       int            `proxy:"port"`
@@ -36,15 +35,11 @@ type ShadowSocksOption struct {
 	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"`
+	PluginOpts map[string]any `proxy:"plugin-opts,omitempty"`
 }
 
 type simpleObfsOption struct {
-	Mode string `obfs:"mode"`
+	Mode string `obfs:"mode,omitempty"`
 	Host string `obfs:"host,omitempty"`
 }
 
@@ -58,6 +53,7 @@ type v2rayObfsOption struct {
 	Mux            bool              `obfs:"mux,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (ss *ShadowSocks) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	switch ss.obfsMode {
 	case "tls":
@@ -77,25 +73,30 @@ func (ss *ShadowSocks) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, e
 	return c, err
 }
 
-func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
+// DialContext implements C.ProxyAdapter
+func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	c, err := dialer.DialContext(ctx, "tcp", ss.addr, ss.Base.DialOptions(opts...)...)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = ss.StreamConn(c, metadata)
 	return NewConn(c, ss), err
 }
 
-func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := dialer.ListenPacket("udp", "")
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *ShadowSocks) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "", ss.Base.DialOptions(opts...)...)
 	if err != nil {
 		return nil, err
 	}
 
 	addr, err := resolveUDPAddr("udp", ss.addr)
 	if err != nil {
+		pc.Close()
 		return nil, err
 	}
 
@@ -103,12 +104,6 @@ func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ss), nil
 }
 
-func (ss *ShadowSocks) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": ss.Type().String(),
-	})
-}
-
 func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
 	cipher := option.Cipher
@@ -122,17 +117,6 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 	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"}
@@ -165,7 +149,6 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 		if opts.TLS {
 			v2rayOption.TLS = true
 			v2rayOption.SkipCertVerify = opts.SkipCertVerify
-			v2rayOption.SessionCache = getClientSessionCache()
 		}
 	}
 
@@ -175,6 +158,8 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 			addr:  addr,
 			tp:    C.Shadowsocks,
 			udp:   option.UDP,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
 		},
 		cipher: ciph,
 
@@ -197,14 +182,6 @@ func (spc *ssPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
 	return spc.PacketConn.WriteTo(packet[3:], spc.rAddr)
 }
 
-func (spc *ssPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
-	packet, err := socks5.EncodeUDPPacket(socks5.ParseAddr(metadata.RemoteAddress()), p)
-	if err != nil {
-		return
-	}
-	return spc.PacketConn.WriteTo(packet[3:], spc.rAddr)
-}
-
 func (spc *ssPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
 	n, _, e := spc.PacketConn.ReadFrom(b)
 	if e != nil {

adapter/outbound/shadowsocksr.go

@@ -0,0 +1,157 @@
+package outbound
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	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/ssr/obfs"
+	"github.com/Dreamacro/clash/transport/ssr/protocol"
+)
+
+type ShadowSocksR struct {
+	*Base
+	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"`
+}
+
+// StreamConn implements C.ProxyAdapter
+func (ssr *ShadowSocksR) StreamConn(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) {
+	c, err := dialer.DialContext(ctx, "tcp", ssr.addr, ssr.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", ssr.addr, err)
+	}
+	tcpKeepAlive(c)
+
+	defer safeConnClose(c, err)
+
+	c, err = ssr.StreamConn(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) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "", ssr.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, err
+	}
+
+	addr, err := resolveUDPAddr("udp", ssr.addr)
+	if err != nil {
+		pc.Close()
+		return nil, err
+	}
+
+	pc = ssr.cipher.PacketConn(pc)
+	pc = ssr.protocol.PacketConn(pc)
+	return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ssr), nil
+}
+
+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,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
+		},
+		cipher:   coreCiph,
+		obfs:     obfs,
+		protocol: protocol,
+	}, nil
+}

adapter/outbound/snell.go

@@ -0,0 +1,164 @@
+package outbound
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	"github.com/Dreamacro/clash/transport/snell"
+)
+
+type Snell struct {
+	*Base
+	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)
+}
+
+// StreamConn implements C.ProxyAdapter
+func (s *Snell) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	c = streamConn(c, streamOption{s.psk, s.version, s.addr, s.obfsOption})
+	port, _ := strconv.ParseUint(metadata.DstPort, 10, 16)
+	err := snell.WriteHeader(c, metadata.String(), uint(port), 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
+		}
+
+		port, _ := strconv.ParseUint(metadata.DstPort, 10, 16)
+		if err = snell.WriteHeader(c, metadata.String(), uint(port), s.version); err != nil {
+			c.Close()
+			return nil, err
+		}
+		return NewConn(c, s), err
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", s.addr, s.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", s.addr, err)
+	}
+	tcpKeepAlive(c)
+
+	defer safeConnClose(c, err)
+
+	c, err = s.StreamConn(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) {
+	c, err := dialer.DialContext(ctx, "tcp", s.addr, s.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	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
+}
+
+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,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
+		},
+		psk:        psk,
+		obfsOption: obfsOption,
+		version:    option.Version,
+	}
+
+	if option.Version == snell.Version2 {
+		s.pool = snell.NewPool(func(ctx context.Context) (*snell.Snell, error) {
+			c, err := dialer.DialContext(ctx, "tcp", addr, s.Base.DialOptions()...)
+			if err != nil {
+				return nil, err
+			}
+
+			tcpKeepAlive(c)
+			return streamConn(c, streamOption{psk, option.Version, addr, obfsOption}), nil
+		})
+	}
+	return s, nil
+}

adapter/outbound/socks5.go

@@ -6,13 +6,12 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"strconv"
 
 	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 type Socks5 struct {
@@ -25,6 +24,7 @@ type Socks5 struct {
 }
 
 type Socks5Option struct {
+	BasicOption
 	Name           string `proxy:"name"`
 	Server         string `proxy:"server"`
 	Port           int    `proxy:"port"`
@@ -35,6 +35,7 @@ type Socks5Option struct {
 	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (ss *Socks5) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	if ss.tls {
 		cc := tls.Client(c, ss.tlsConfig)
@@ -58,13 +59,16 @@ func (ss *Socks5) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error)
 	return c, nil
 }
 
-func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
+// DialContext implements C.ProxyAdapter
+func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
+	c, err := dialer.DialContext(ctx, "tcp", ss.addr, ss.Base.DialOptions(opts...)...)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = ss.StreamConn(c, metadata)
 	if err != nil {
 		return nil, err
@@ -73,10 +77,9 @@ func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn
 	return NewConn(c, ss), nil
 }
 
-func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *Socks5) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
+	c, err := dialer.DialContext(ctx, "tcp", ss.addr, ss.Base.DialOptions(opts...)...)
 	if err != nil {
 		err = fmt.Errorf("%s connect error: %w", ss.addr, err)
 		return
@@ -88,11 +91,7 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		c = cc
 	}
 
-	defer func() {
-		if err != nil {
-			c.Close()
-		}
-	}()
+	defer safeConnClose(c, err)
 
 	tcpKeepAlive(c)
 	var user *socks5.User
@@ -109,20 +108,34 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		return
 	}
 
-	pc, err := dialer.ListenPacket("udp", "")
+	pc, err := dialer.ListenPacket(ctx, "udp", "", ss.Base.DialOptions(opts...)...)
 	if err != nil {
 		return
 	}
 
 	go func() {
-		io.Copy(ioutil.Discard, c)
+		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: bindAddr.UDPAddr(), tcpConn: c}, ss), nil
+	// 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("udp", ss.Addr())
+		if err != nil {
+			return nil, err
+		}
+
+		bindUDPAddr.IP = serverAddr.IP
+	}
+
+	return newPacketConn(&socksPacketConn{PacketConn: pc, rAddr: bindUDPAddr, tcpConn: c}, ss), nil
 }
 
 func NewSocks5(option Socks5Option) *Socks5 {
@@ -130,7 +143,6 @@ func NewSocks5(option Socks5Option) *Socks5 {
 	if option.TLS {
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
 			ServerName:         option.Server,
 		}
 	}
@@ -141,6 +153,8 @@ func NewSocks5(option Socks5Option) *Socks5 {
 			addr:  net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
 			tp:    C.Socks5,
 			udp:   option.UDP,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
 		},
 		user:           option.UserName,
 		pass:           option.Password,
@@ -164,14 +178,6 @@ func (uc *socksPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
 	return uc.PacketConn.WriteTo(packet, uc.rAddr)
 }
 
-func (uc *socksPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
-	packet, err := socks5.EncodeUDPPacket(socks5.ParseAddr(metadata.RemoteAddress()), p)
-	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 {

adapter/outbound/trojan.go

@@ -0,0 +1,208 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/trojan"
+
+	"golang.org/x/net/http2"
+)
+
+type Trojan struct {
+	*Base
+	instance *trojan.Trojan
+	option   *TrojanOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *http2.Transport
+}
+
+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"`
+	UDP            bool        `proxy:"udp,omitempty"`
+	Network        string      `proxy:"network,omitempty"`
+	GrpcOpts       GrpcOptions `proxy:"grpc-opts,omitempty"`
+	WSOpts         WSOptions   `proxy:"ws-opts,omitempty"`
+}
+
+func (t *Trojan) plainStream(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(c, wsOpts)
+	}
+
+	return t.instance.StreamConn(c)
+}
+
+// StreamConn implements C.ProxyAdapter
+func (t *Trojan) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+	if t.transport != nil {
+		c, err = gun.StreamGunWithConn(c, t.gunTLSConfig, t.gunConfig)
+	} else {
+		c, err = t.plainStream(c)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, 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
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", t.addr, t.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+	tcpKeepAlive(c)
+
+	defer safeConnClose(c, err)
+
+	c, err = t.StreamConn(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 safeConnClose(c, err)
+	} else {
+		c, err = dialer.DialContext(ctx, "tcp", t.addr, t.Base.DialOptions(opts...)...)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+		}
+		defer safeConnClose(c, err)
+		tcpKeepAlive(c)
+		c, err = t.plainStream(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
+}
+
+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,
+	}
+
+	if option.SNI != "" {
+		tOption.ServerName = option.SNI
+	}
+
+	t := &Trojan{
+		Base: &Base{
+			name:  option.Name,
+			addr:  addr,
+			tp:    C.Trojan,
+			udp:   option.UDP,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
+		},
+		instance: trojan.New(tOption),
+		option:   &option,
+	}
+
+	if option.Network == "grpc" {
+		dialFn := func(network, addr string) (net.Conn, error) {
+			c, err := dialer.DialContext(context.Background(), "tcp", t.addr, t.Base.DialOptions()...)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", t.addr, err.Error())
+			}
+			tcpKeepAlive(c)
+			return c, nil
+		}
+
+		tlsConfig := &tls.Config{
+			NextProtos:         option.ALPN,
+			MinVersion:         tls.VersionTLS12,
+			InsecureSkipVerify: tOption.SkipCertVerify,
+			ServerName:         tOption.ServerName,
+		}
+
+		t.transport = gun.NewHTTP2Client(dialFn, tlsConfig)
+		t.gunTLSConfig = tlsConfig
+		t.gunConfig = &gun.Config{
+			ServiceName: option.GrpcOpts.GrpcServiceName,
+			Host:        tOption.ServerName,
+		}
+	}
+
+	return t, nil
+}

adapter/outbound/util.go

@@ -2,56 +2,15 @@ package outbound
 
 import (
 	"bytes"
-	"crypto/tls"
-	"fmt"
 	"net"
-	"net/url"
 	"strconv"
-	"sync"
 	"time"
 
 	"github.com/Dreamacro/clash/component/resolver"
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
-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)
@@ -59,19 +18,13 @@ func tcpKeepAlive(c net.Conn) {
 	}
 }
 
-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)
+	addrType := metadata.AddrType()
+	aType := uint8(addrType)
+	p, _ := strconv.ParseUint(metadata.DstPort, 10, 16)
 	port := []byte{uint8(p >> 8), uint8(p & 0xff)}
-	switch metadata.AddrType {
+	switch addrType {
 	case socks5.AtypDomainName:
 		len := uint8(len(metadata.Host))
 		host := []byte(metadata.Host)
@@ -98,3 +51,9 @@ func resolveUDPAddr(network, address string) (*net.UDPAddr, error) {
 	}
 	return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
 }
+
+func safeConnClose(c net.Conn, err error) {
+	if err != nil {
+		c.Close()
+	}
+}

adapter/outbound/vmess.go

@@ -0,0 +1,368 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/resolver"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/socks5"
+	"github.com/Dreamacro/clash/transport/vmess"
+
+	"golang.org/x/net/http2"
+)
+
+type Vmess struct {
+	*Base
+	client *vmess.Client
+	option *VmessOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *http2.Transport
+}
+
+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"`
+	SkipCertVerify bool         `proxy:"skip-cert-verify,omitempty"`
+	ServerName     string       `proxy:"servername,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"`
+}
+
+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"`
+}
+
+// StreamConn implements C.ProxyAdapter
+func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+	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,
+		}
+
+		if len(v.option.WSOpts.Headers) != 0 {
+			header := http.Header{}
+			for key, value := range v.option.WSOpts.Headers {
+				header.Add(key, value)
+			}
+			wsOpts.Headers = header
+		}
+
+		if v.option.TLS {
+			wsOpts.TLS = true
+			wsOpts.TLSConfig = &tls.Config{
+				ServerName:         host,
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				NextProtos:         []string{"http/1.1"},
+			}
+			if v.option.ServerName != "" {
+				wsOpts.TLSConfig.ServerName = v.option.ServerName
+			} else if host := wsOpts.Headers.Get("Host"); host != "" {
+				wsOpts.TLSConfig.ServerName = host
+			}
+		}
+		c, err = vmess.StreamWebsocketConn(c, wsOpts)
+	case "http":
+		// readability first, so just copy default TLS logic
+		if v.option.TLS {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsOpts := &vmess.TLSConfig{
+				Host:           host,
+				SkipCertVerify: v.option.SkipCertVerify,
+			}
+
+			if v.option.ServerName != "" {
+				tlsOpts.Host = v.option.ServerName
+			}
+
+			c, err = vmess.StreamTLSConn(c, tlsOpts)
+			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":
+		host, _, _ := net.SplitHostPort(v.addr)
+		tlsOpts := vmess.TLSConfig{
+			Host:           host,
+			SkipCertVerify: v.option.SkipCertVerify,
+			NextProtos:     []string{"h2"},
+		}
+
+		if v.option.ServerName != "" {
+			tlsOpts.Host = v.option.ServerName
+		}
+
+		c, err = vmess.StreamTLSConn(c, &tlsOpts)
+		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)
+	default:
+		// handle TLS
+		if v.option.TLS {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsOpts := &vmess.TLSConfig{
+				Host:           host,
+				SkipCertVerify: v.option.SkipCertVerify,
+			}
+
+			if v.option.ServerName != "" {
+				tlsOpts.Host = v.option.ServerName
+			}
+
+			c, err = vmess.StreamTLSConn(c, tlsOpts)
+		}
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return v.client.StreamConn(c, parseVmessAddr(metadata))
+}
+
+// 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 safeConnClose(c, err)
+
+		c, err = v.client.StreamConn(c, parseVmessAddr(metadata))
+		if err != nil {
+			return nil, err
+		}
+
+		return NewConn(c, v), nil
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", v.addr, v.Base.DialOptions(opts...)...)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	}
+	tcpKeepAlive(c)
+	defer safeConnClose(c, err)
+
+	c, err = v.StreamConn(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 needs a net.UDPAddr
+	if !metadata.Resolved() {
+		ip, err := resolver.ResolveIP(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 safeConnClose(c, err)
+
+		c, err = v.client.StreamConn(c, parseVmessAddr(metadata))
+	} else {
+		c, err = dialer.DialContext(ctx, "tcp", v.addr, v.Base.DialOptions(opts...)...)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+		}
+		tcpKeepAlive(c)
+		defer safeConnClose(c, err)
+
+		c, err = v.StreamConn(c, metadata)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("new vmess client error: %v", err)
+	}
+
+	return newPacketConn(&vmessPacketConn{Conn: c, rAddr: metadata.UDPAddr()}, v), 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,
+		HostName: option.Server,
+		Port:     strconv.Itoa(option.Port),
+		IsAead:   option.AlterID == 0,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	switch option.Network {
+	case "h2", "grpc":
+		if !option.TLS {
+			return nil, fmt.Errorf("TLS must be true with h2/grpc network")
+		}
+	}
+
+	v := &Vmess{
+		Base: &Base{
+			name:  option.Name,
+			addr:  net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
+			tp:    C.Vmess,
+			udp:   option.UDP,
+			iface: option.Interface,
+			rmark: option.RoutingMark,
+		},
+		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) {
+			c, err := dialer.DialContext(context.Background(), "tcp", v.addr, v.Base.DialOptions()...)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+			}
+			tcpKeepAlive(c)
+			return c, nil
+		}
+
+		gunConfig := &gun.Config{
+			ServiceName: v.option.GrpcOpts.GrpcServiceName,
+			Host:        v.option.ServerName,
+		}
+		tlsConfig := &tls.Config{
+			InsecureSkipVerify: v.option.SkipCertVerify,
+			ServerName:         v.option.ServerName,
+		}
+
+		if v.option.ServerName == "" {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsConfig.ServerName = host
+			gunConfig.Host = host
+		}
+
+		v.gunTLSConfig = tlsConfig
+		v.gunConfig = gunConfig
+		v.transport = gun.NewHTTP2Client(dialFn, tlsConfig)
+	}
+
+	return v, nil
+}
+
+func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {
+	var addrType byte
+	var addr []byte
+	switch metadata.AddrType() {
+	case socks5.AtypIPv4:
+		addrType = byte(vmess.AtypIPv4)
+		addr = make([]byte, net.IPv4len)
+		copy(addr[:], metadata.DstIP.To4())
+	case socks5.AtypIPv6:
+		addrType = byte(vmess.AtypIPv6)
+		addr = make([]byte, net.IPv6len)
+		copy(addr[:], metadata.DstIP.To16())
+	case socks5.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.ParseUint(metadata.DstPort, 10, 16)
+	return &vmess.DstAddr{
+		UDP:      metadata.NetWork == C.UDP,
+		AddrType: addrType,
+		Addr:     addr,
+		Port:     uint(port),
+	}
+}
+
+type vmessPacketConn struct {
+	net.Conn
+	rAddr net.Addr
+}
+
+func (uc *vmessPacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
+	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/outboundgroup/common.go

@@ -0,0 +1,24 @@
+package outboundgroup
+
+import (
+	"time"
+
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
+)
+
+const (
+	defaultGetProxiesDuration = time.Second * 5
+)
+
+func getProvidersProxies(providers []provider.ProxyProvider, touch bool) []C.Proxy {
+	proxies := []C.Proxy{}
+	for _, provider := range providers {
+		if touch {
+			proxies = append(proxies, provider.ProxiesWithTouch()...)
+		} else {
+			proxies = append(proxies, provider.Proxies()...)
+		}
+	}
+	return proxies
+}

adapter/outboundgroup/fallback.go

@@ -0,0 +1,106 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"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 Fallback struct {
+	*outbound.Base
+	disableUDP bool
+	single     *singledo.Single
+	providers  []provider.ProxyProvider
+}
+
+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)
+	}
+	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()
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (f *Fallback) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range f.proxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type": f.Type().String(),
+		"now":  f.Now(),
+		"all":  all,
+	})
+}
+
+// Unwrap implements C.ProxyAdapter
+func (f *Fallback) Unwrap(metadata *C.Metadata) C.Proxy {
+	proxy := f.findAliveProxy(true)
+	return proxy
+}
+
+func (f *Fallback) proxies(touch bool) []C.Proxy {
+	elm, _, _ := f.single.Do(func() (any, error) {
+		return getProvidersProxies(f.providers, touch), nil
+	})
+
+	return elm.([]C.Proxy)
+}
+
+func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
+	proxies := f.proxies(touch)
+	for _, proxy := range proxies {
+		if proxy.Alive() {
+			return proxy
+		}
+	}
+
+	return proxies[0]
+}
+
+func NewFallback(option *GroupCommonOption, providers []provider.ProxyProvider) *Fallback {
+	return &Fallback{
+		Base: outbound.NewBase(outbound.BaseOption{
+			Name:        option.Name,
+			Type:        C.Fallback,
+			Interface:   option.Interface,
+			RoutingMark: option.RoutingMark,
+		}),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		disableUDP: option.DisableUDP,
+	}
+}

adapter/outboundgroup/loadbalance.go

@@ -0,0 +1,189 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/common/murmur3"
+	"github.com/Dreamacro/clash/common/singledo"
+	"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) C.Proxy
+
+type LoadBalance struct {
+	*outbound.Base
+	disableUDP bool
+	single     *singledo.Single
+	providers  []provider.ProxyProvider
+	strategyFn strategyFn
+}
+
+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.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)
+}
+
+// DialContext implements C.ProxyAdapter
+func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (c C.Conn, err error) {
+	defer func() {
+		if err == nil {
+			c.AppendToChains(lb)
+		}
+	}()
+
+	proxy := lb.Unwrap(metadata)
+
+	c, err = proxy.DialContext(ctx, metadata, lb.Base.DialOptions(opts...)...)
+	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)
+	return proxy.ListenPacketContext(ctx, metadata, lb.Base.DialOptions(opts...)...)
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (lb *LoadBalance) SupportUDP() bool {
+	return !lb.disableUDP
+}
+
+func strategyRoundRobin() strategyFn {
+	idx := 0
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		length := len(proxies)
+		for i := 0; i < length; i++ {
+			idx = (idx + 1) % length
+			proxy := proxies[idx]
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+func strategyConsistentHashing() strategyFn {
+	maxRetry := 5
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		key := uint64(murmur3.Sum32([]byte(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() {
+				return proxy
+			}
+		}
+
+		// when availability is poor, traverse the entire list to get the available nodes
+		for _, proxy := range proxies {
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+// Unwrap implements C.ProxyAdapter
+func (lb *LoadBalance) Unwrap(metadata *C.Metadata) C.Proxy {
+	proxies := lb.proxies(true)
+	return lb.strategyFn(proxies, metadata)
+}
+
+func (lb *LoadBalance) proxies(touch bool) []C.Proxy {
+	elm, _, _ := lb.single.Do(func() (any, error) {
+		return getProvidersProxies(lb.providers, touch), nil
+	})
+
+	return elm.([]C.Proxy)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range lb.proxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type": lb.Type().String(),
+		"all":  all,
+	})
+}
+
+func NewLoadBalance(option *GroupCommonOption, providers []provider.ProxyProvider, strategy string) (lb *LoadBalance, err error) {
+	var strategyFn strategyFn
+	switch strategy {
+	case "consistent-hashing":
+		strategyFn = strategyConsistentHashing()
+	case "round-robin":
+		strategyFn = strategyRoundRobin()
+	default:
+		return nil, fmt.Errorf("%w: %s", errStrategy, strategy)
+	}
+	return &LoadBalance{
+		Base: outbound.NewBase(outbound.BaseOption{
+			Name:        option.Name,
+			Type:        C.LoadBalance,
+			Interface:   option.Interface,
+			RoutingMark: option.RoutingMark,
+		}),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		strategyFn: strategyFn,
+		disableUDP: option.DisableUDP,
+	}, nil
+}

adapter/outboundgroup/parser.go

@@ -4,33 +4,39 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/structure"
 	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
 )
 
 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")
+	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"`
 }
 
-func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy, providersMap map[string]provider.ProxyProvider) (C.ProxyAdapter, error) {
+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{}
+	groupOption := &GroupCommonOption{
+		Lazy: true,
+	}
 	if err := decoder.Decode(config, groupOption); err != nil {
 		return nil, errFormat
 	}
@@ -41,7 +47,7 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 
 	groupName := groupOption.Name
 
-	providers := []provider.ProxyProvider{}
+	providers := []types.ProxyProvider{}
 
 	if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 {
 		return nil, errMissProxy
@@ -53,19 +59,13 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 			return nil, err
 		}
 
-		// if Use not empty, drop health check options
-		if len(groupOption.Use) != 0 {
-			hc := provider.NewHealthCheck(ps, "", 0)
-			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
-			if err != nil {
-				return nil, err
+		if _, ok := providersMap[groupName]; ok {
+			return nil, errDuplicateProvider
 		}
 
-			providers = append(providers, pd)
-		} else {
 		// select don't need health check
 		if groupOption.Type == "select" || groupOption.Type == "relay" {
-				hc := provider.NewHealthCheck(ps, "", 0)
+			hc := provider.NewHealthCheck(ps, "", 0, true)
 			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 			if err != nil {
 				return nil, err
@@ -78,7 +78,7 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 				return nil, errMissHealthCheck
 			}
 
-				hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval))
+			hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
 			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 			if err != nil {
 				return nil, err
@@ -88,7 +88,6 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 			providersMap[groupName] = pd
 		}
 	}
-	}
 
 	if len(groupOption.Use) != 0 {
 		list, err := getProviders(providersMap, groupOption.Use)
@@ -101,15 +100,17 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 	var group C.ProxyAdapter
 	switch groupOption.Type {
 	case "url-test":
-		group = NewURLTest(groupName, providers)
+		opts := parseURLTestOption(config)
+		group = NewURLTest(groupOption, providers, opts...)
 	case "select":
-		group = NewSelector(groupName, providers)
+		group = NewSelector(groupOption, providers)
 	case "fallback":
-		group = NewFallback(groupName, providers)
+		group = NewFallback(groupOption, providers)
 	case "load-balance":
-		group = NewLoadBalance(groupName, providers)
+		strategy := parseStrategy(config)
+		return NewLoadBalance(groupOption, providers, strategy)
 	case "relay":
-		group = NewRelay(groupName, providers)
+		group = NewRelay(groupOption, providers)
 	default:
 		return nil, fmt.Errorf("%w: %s", errType, groupOption.Type)
 	}
@@ -129,15 +130,15 @@ func getProxies(mapping map[string]C.Proxy, list []string) ([]C.Proxy, error) {
 	return ps, nil
 }
 
-func getProviders(mapping map[string]provider.ProxyProvider, list []string) ([]provider.ProxyProvider, error) {
-	var ps []provider.ProxyProvider
+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() == provider.Compatible {
+		if p.VehicleType() == types.Compatible {
 			return nil, fmt.Errorf("proxy group %s can't contains in `use`", name)
 		}
 		ps = append(ps, p)

adapter/outboundgroup/relay.go

@@ -3,14 +3,13 @@ package outboundgroup
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/outbound"
 	"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 Relay struct {
@@ -19,15 +18,26 @@ type Relay struct {
 	providers []provider.ProxyProvider
 }
 
-func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxies := r.proxies(metadata)
-	if len(proxies) == 0 {
-		return nil, errors.New("Proxy does not exist")
+// DialContext implements C.ProxyAdapter
+func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
+	var proxies []C.Proxy
+	for _, proxy := range r.proxies(metadata, true) {
+		if proxy.Type() != C.Direct {
+			proxies = append(proxies, proxy)
 		}
+	}
+
+	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...)...)
+	}
+
 	first := proxies[0]
 	last := proxies[len(proxies)-1]
 
-	c, err := dialer.DialContext(ctx, "tcp", first.Addr())
+	c, err := dialer.DialContext(ctx, "tcp", first.Addr(), r.Base.DialOptions(opts...)...)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", first.Addr(), err)
 	}
@@ -56,27 +66,28 @@ func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 	return outbound.NewConn(c, r), nil
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (r *Relay) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range r.rawProxies() {
+	for _, proxy := range r.rawProxies(false) {
 		all = append(all, proxy.Name())
 	}
-	return json.Marshal(map[string]interface{}{
+	return json.Marshal(map[string]any{
 		"type": r.Type().String(),
 		"all":  all,
 	})
 }
 
-func (r *Relay) rawProxies() []C.Proxy {
-	elm, _, _ := r.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(r.providers), nil
+func (r *Relay) rawProxies(touch bool) []C.Proxy {
+	elm, _, _ := r.single.Do(func() (any, error) {
+		return getProvidersProxies(r.providers, touch), nil
 	})
 
 	return elm.([]C.Proxy)
 }
 
-func (r *Relay) proxies(metadata *C.Metadata) []C.Proxy {
-	proxies := r.rawProxies()
+func (r *Relay) proxies(metadata *C.Metadata, touch bool) []C.Proxy {
+	proxies := r.rawProxies(touch)
 
 	for n, proxy := range proxies {
 		subproxy := proxy.Unwrap(metadata)
@@ -89,9 +100,14 @@ func (r *Relay) proxies(metadata *C.Metadata) []C.Proxy {
 	return proxies
 }
 
-func NewRelay(name string, providers []provider.ProxyProvider) *Relay {
+func NewRelay(option *GroupCommonOption, providers []provider.ProxyProvider) *Relay {
 	return &Relay{
-		Base:      outbound.NewBase(name, "", C.Relay, false),
+		Base: outbound.NewBase(outbound.BaseOption{
+			Name:        option.Name,
+			Type:        C.Relay,
+			Interface:   option.Interface,
+			RoutingMark: option.RoutingMark,
+		}),
 		single:    singledo.NewSingle(defaultGetProxiesDuration),
 		providers: providers,
 	}

adapter/outboundgroup/selector.go

@@ -0,0 +1,114 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"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 Selector struct {
+	*outbound.Base
+	disableUDP bool
+	single     *singledo.Single
+	selected   string
+	providers  []provider.ProxyProvider
+}
+
+// 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()
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (s *Selector) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range getProvidersProxies(s.providers, 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 getProvidersProxies(s.providers, false) {
+		if proxy.Name() == name {
+			s.selected = name
+			s.single.Reset()
+			return nil
+		}
+	}
+
+	return errors.New("proxy not exist")
+}
+
+// Unwrap implements C.ProxyAdapter
+func (s *Selector) Unwrap(metadata *C.Metadata) C.Proxy {
+	return s.selectedProxy(true)
+}
+
+func (s *Selector) selectedProxy(touch bool) C.Proxy {
+	elm, _, _ := s.single.Do(func() (any, error) {
+		proxies := getProvidersProxies(s.providers, touch)
+		for _, proxy := range proxies {
+			if proxy.Name() == s.selected {
+				return proxy, nil
+			}
+		}
+
+		return proxies[0], nil
+	})
+
+	return elm.(C.Proxy)
+}
+
+func NewSelector(option *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
+	selected := providers[0].Proxies()[0].Name()
+	return &Selector{
+		Base: outbound.NewBase(outbound.BaseOption{
+			Name:        option.Name,
+			Type:        C.Selector,
+			Interface:   option.Interface,
+			RoutingMark: option.RoutingMark,
+		}),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		selected:   selected,
+		disableUDP: option.DisableUDP,
+	}
+}

adapter/outboundgroup/urltest.go

@@ -0,0 +1,154 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"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 {
+	*outbound.Base
+	tolerance  uint16
+	disableUDP bool
+	fastNode   C.Proxy
+	single     *singledo.Single
+	fastSingle *singledo.Single
+	providers  []provider.ProxyProvider
+}
+
+func (u *URLTest) Now() string {
+	return u.fast(false).Name()
+}
+
+// DialContext implements C.ProxyAdapter
+func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (c C.Conn, err error) {
+	c, err = u.fast(true).DialContext(ctx, metadata, u.Base.DialOptions(opts...)...)
+	if err == nil {
+		c.AppendToChains(u)
+	}
+	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) C.Proxy {
+	return u.fast(true)
+}
+
+func (u *URLTest) proxies(touch bool) []C.Proxy {
+	elm, _, _ := u.single.Do(func() (any, error) {
+		return getProvidersProxies(u.providers, touch), nil
+	})
+
+	return elm.([]C.Proxy)
+}
+
+func (u *URLTest) fast(touch bool) C.Proxy {
+	elm, _, _ := u.fastSingle.Do(func() (any, error) {
+		proxies := u.proxies(touch)
+		fast := proxies[0]
+		min := fast.LastDelay()
+		fastNotExist := true
+
+		for _, proxy := range proxies[1:] {
+			if u.fastNode != nil && proxy.Name() == u.fastNode.Name() {
+				fastNotExist = false
+			}
+
+			if !proxy.Alive() {
+				continue
+			}
+
+			delay := proxy.LastDelay()
+			if delay < min {
+				fast = proxy
+				min = delay
+			}
+		}
+
+		// tolerance
+		if u.fastNode == nil || fastNotExist || !u.fastNode.Alive() || u.fastNode.LastDelay() > fast.LastDelay()+u.tolerance {
+			u.fastNode = fast
+		}
+
+		return u.fastNode, nil
+	})
+
+	return elm.(C.Proxy)
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (u *URLTest) SupportUDP() bool {
+	if u.disableUDP {
+		return false
+	}
+
+	return u.fast(false).SupportUDP()
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (u *URLTest) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range u.proxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]any{
+		"type": u.Type().String(),
+		"now":  u.Now(),
+		"all":  all,
+	})
+}
+
+func parseURLTestOption(config map[string]any) []urlTestOption {
+	opts := []urlTestOption{}
+
+	// tolerance
+	if tolerance, ok := config["tolerance"].(int); ok {
+		opts = append(opts, urlTestWithTolerance(uint16(tolerance)))
+	}
+
+	return opts
+}
+
+func NewURLTest(option *GroupCommonOption, providers []provider.ProxyProvider, options ...urlTestOption) *URLTest {
+	urlTest := &URLTest{
+		Base: outbound.NewBase(outbound.BaseOption{
+			Name:        option.Name,
+			Type:        C.URLTest,
+			Interface:   option.Interface,
+			RoutingMark: option.RoutingMark,
+		}),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		fastSingle: singledo.NewSingle(time.Second * 10),
+		providers:  providers,
+		disableUDP: option.DisableUDP,
+	}
+
+	for _, option := range options {
+		option(urlTest)
+	}
+
+	return urlTest
+}

adapter/outboundgroup/util.go

@@ -16,33 +16,28 @@ func addrToMetadata(rawAddress string) (addr *C.Metadata, err error) {
 	}
 
 	ip := net.ParseIP(host)
-	if ip != nil {
-		if ip.To4() != nil {
+	if ip == nil {
 		addr = &C.Metadata{
-				AddrType: C.AtypIPv4,
-				Host:     "",
-				DstIP:    ip,
-				DstPort:  port,
-			}
-			return
-		} else {
-			addr = &C.Metadata{
-				AddrType: C.AtypIPv6,
-				Host:     "",
-				DstIP:    ip,
-				DstPort:  port,
-			}
-			return
-		}
-	} else {
-		addr = &C.Metadata{
-			AddrType: C.AtypDomainName,
 			Host:    host,
 			DstIP:   nil,
 			DstPort: port,
 		}
 		return
+	} else if ip4 := ip.To4(); ip4 != nil {
+		addr = &C.Metadata{
+			Host:    "",
+			DstIP:   ip4,
+			DstPort: port,
 		}
+		return
+	}
+
+	addr = &C.Metadata{
+		Host:    "",
+		DstIP:   ip,
+		DstPort: port,
+	}
+	return
 }
 
 func tcpKeepAlive(c net.Conn) {

adapter/parser.go

@@ -0,0 +1,86 @@
+package adapter
+
+import (
+	"fmt"
+
+	"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})
+	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{}
+		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 = outbound.NewSocks5(*socksOption)
+	case "http":
+		httpOption := &outbound.HttpOption{}
+		err = decoder.Decode(mapping, httpOption)
+		if err != nil {
+			break
+		}
+		proxy = outbound.NewHttp(*httpOption)
+	case "vmess":
+		vmessOption := &outbound.VmessOption{
+			HTTPOpts: outbound.HTTPOptions{
+				Method: "GET",
+				Path:   []string{"/"},
+			},
+		}
+		err = decoder.Decode(mapping, vmessOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewVmess(*vmessOption)
+	case "snell":
+		snellOption := &outbound.SnellOption{}
+		err = decoder.Decode(mapping, snellOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewSnell(*snellOption)
+	case "trojan":
+		trojanOption := &outbound.TrojanOption{}
+		err = decoder.Decode(mapping, trojanOption)
+		if err != nil {
+			break
+		}
+		proxy, err = outbound.NewTrojan(*trojanOption)
+	default:
+		return nil, fmt.Errorf("unsupport proxy type: %s", proxyType)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return NewProxy(proxy), nil
+}

adapter/provider/fetcher.go

@@ -0,0 +1,185 @@
+package provider
+
+import (
+	"bytes"
+	"crypto/md5"
+	"os"
+	"path/filepath"
+	"time"
+
+	types "github.com/Dreamacro/clash/constant/provider"
+	"github.com/Dreamacro/clash/log"
+)
+
+var (
+	fileMode os.FileMode = 0o666
+	dirMode  os.FileMode = 0o755
+)
+
+type parser = func([]byte) (any, error)
+
+type fetcher struct {
+	name      string
+	vehicle   types.Vehicle
+	updatedAt *time.Time
+	ticker    *time.Ticker
+	done      chan struct{}
+	hash      [16]byte
+	parser    parser
+	onUpdate  func(any)
+}
+
+func (f *fetcher) Name() string {
+	return f.name
+}
+
+func (f *fetcher) VehicleType() types.VehicleType {
+	return f.vehicle.Type()
+}
+
+func (f *fetcher) Initial() (any, error) {
+	var (
+		buf     []byte
+		err     error
+		isLocal bool
+	)
+	if stat, fErr := os.Stat(f.vehicle.Path()); fErr == nil {
+		buf, err = os.ReadFile(f.vehicle.Path())
+		modTime := stat.ModTime()
+		f.updatedAt = &modTime
+		isLocal = true
+	} else {
+		buf, err = f.vehicle.Read()
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	proxies, err := f.parser(buf)
+	if err != nil {
+		if !isLocal {
+			return nil, err
+		}
+
+		// parse local file error, fallback to remote
+		buf, err = f.vehicle.Read()
+		if err != nil {
+			return nil, err
+		}
+
+		proxies, err = f.parser(buf)
+		if err != nil {
+			return nil, err
+		}
+
+		isLocal = false
+	}
+
+	if f.vehicle.Type() != types.File && !isLocal {
+		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
+			return nil, err
+		}
+	}
+
+	f.hash = md5.Sum(buf)
+
+	// pull proxies automatically
+	if f.ticker != nil {
+		go f.pullLoop()
+	}
+
+	return proxies, nil
+}
+
+func (f *fetcher) Update() (any, bool, error) {
+	buf, err := f.vehicle.Read()
+	if err != nil {
+		return nil, false, err
+	}
+
+	now := time.Now()
+	hash := md5.Sum(buf)
+	if bytes.Equal(f.hash[:], hash[:]) {
+		f.updatedAt = &now
+		os.Chtimes(f.vehicle.Path(), now, now)
+		return nil, true, nil
+	}
+
+	proxies, err := f.parser(buf)
+	if err != nil {
+		return nil, false, err
+	}
+
+	if f.vehicle.Type() != types.File {
+		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
+			return nil, false, err
+		}
+	}
+
+	f.updatedAt = &now
+	f.hash = hash
+
+	return proxies, false, nil
+}
+
+func (f *fetcher) Destroy() error {
+	if f.ticker != nil {
+		f.done <- struct{}{}
+	}
+	return nil
+}
+
+func (f *fetcher) pullLoop() {
+	for {
+		select {
+		case <-f.ticker.C:
+			elm, same, err := f.Update()
+			if err != nil {
+				log.Warnln("[Provider] %s pull error: %s", f.Name(), err.Error())
+				continue
+			}
+
+			if same {
+				log.Debugln("[Provider] %s's proxies doesn't change", f.Name())
+				continue
+			}
+
+			log.Infoln("[Provider] %s's proxies update", f.Name())
+			if f.onUpdate != nil {
+				f.onUpdate(elm)
+			}
+		case <-f.done:
+			f.ticker.Stop()
+			return
+		}
+	}
+}
+
+func safeWrite(path string, buf []byte) error {
+	dir := filepath.Dir(path)
+
+	if _, err := os.Stat(dir); os.IsNotExist(err) {
+		if err := os.MkdirAll(dir, dirMode); err != nil {
+			return err
+		}
+	}
+
+	return os.WriteFile(path, buf, fileMode)
+}
+
+func newFetcher(name string, interval time.Duration, vehicle types.Vehicle, parser parser, onUpdate func(any)) *fetcher {
+	var ticker *time.Ticker
+	if interval != 0 {
+		ticker = time.NewTicker(interval)
+	}
+
+	return &fetcher{
+		name:     name,
+		ticker:   ticker,
+		vehicle:  vehicle,
+		parser:   parser,
+		done:     make(chan struct{}, 1),
+		onUpdate: onUpdate,
+	}
+}

adapter/provider/healthcheck.go

@@ -0,0 +1,88 @@
+package provider
+
+import (
+	"context"
+	"time"
+
+	"github.com/Dreamacro/clash/common/batch"
+	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
+)
+
+const (
+	defaultURLTestTimeout = time.Second * 5
+)
+
+type HealthCheckOption struct {
+	URL      string
+	Interval uint
+}
+
+type HealthCheck struct {
+	url       string
+	proxies   []C.Proxy
+	interval  uint
+	lazy      bool
+	lastTouch *atomic.Int64
+	done      chan struct{}
+}
+
+func (hc *HealthCheck) process() {
+	ticker := time.NewTicker(time.Duration(hc.interval) * time.Second)
+
+	go hc.check()
+	for {
+		select {
+		case <-ticker.C:
+			now := time.Now().Unix()
+			if !hc.lazy || now-hc.lastTouch.Load() < int64(hc.interval) {
+				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) touch() {
+	hc.lastTouch.Store(time.Now().Unix())
+}
+
+func (hc *HealthCheck) check() {
+	b, _ := batch.New(context.Background(), batch.WithConcurrencyNum(10))
+	for _, proxy := range hc.proxies {
+		p := proxy
+		b.Go(p.Name(), func() (any, error) {
+			ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
+			defer cancel()
+			p.URLTest(ctx, hc.url)
+			return nil, nil
+		})
+	}
+	b.Wait()
+}
+
+func (hc *HealthCheck) close() {
+	hc.done <- struct{}{}
+}
+
+func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool) *HealthCheck {
+	return &HealthCheck{
+		proxies:   proxies,
+		url:       url,
+		interval:  interval,
+		lazy:      lazy,
+		lastTouch: atomic.NewInt64(0),
+		done:      make(chan struct{}, 1),
+	}
+}

adapter/provider/parser.go

@@ -7,16 +7,16 @@ import (
 
 	"github.com/Dreamacro/clash/common/structure"
 	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
 )
 
-var (
-	errVehicleType = errors.New("unsupport vehicle type")
-)
+var errVehicleType = errors.New("unsupport vehicle type")
 
 type healthCheckSchema struct {
 	Enable   bool   `provider:"enable"`
 	URL      string `provider:"url"`
 	Interval int    `provider:"interval"`
+	Lazy     bool   `provider:"lazy,omitempty"`
 }
 
 type proxyProviderSchema struct {
@@ -24,26 +24,31 @@ type proxyProviderSchema struct {
 	Path        string            `provider:"path"`
 	URL         string            `provider:"url,omitempty"`
 	Interval    int               `provider:"interval,omitempty"`
+	Filter      string            `provider:"filter,omitempty"`
 	HealthCheck healthCheckSchema `provider:"health-check,omitempty"`
 }
 
-func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvider, error) {
+func ParseProxyProvider(name string, mapping map[string]any) (types.ProxyProvider, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "provider", WeaklyTypedInput: true})
 
-	schema := &proxyProviderSchema{}
+	schema := &proxyProviderSchema{
+		HealthCheck: healthCheckSchema{
+			Lazy: true,
+		},
+	}
 	if err := decoder.Decode(mapping, schema); err != nil {
 		return nil, err
 	}
 
-	var hcInterval uint = 0
+	var hcInterval uint
 	if schema.HealthCheck.Enable {
 		hcInterval = uint(schema.HealthCheck.Interval)
 	}
-	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval)
+	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval, schema.HealthCheck.Lazy)
 
 	path := C.Path.Resolve(schema.Path)
 
-	var vehicle Vehicle
+	var vehicle types.Vehicle
 	switch schema.Type {
 	case "file":
 		vehicle = NewFileVehicle(path)
@@ -54,5 +59,6 @@ func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvi
 	}
 
 	interval := time.Duration(uint(schema.Interval)) * time.Second
-	return NewProxySetProvider(name, interval, vehicle, hc), nil
+	filter := schema.Filter
+	return NewProxySetProvider(name, interval, filter, vehicle, hc)
 }

adapter/provider/provider.go

@@ -4,57 +4,23 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"regexp"
 	"runtime"
 	"time"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
+	"github.com/Dreamacro/clash/adapter"
 	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
 
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 )
 
 const (
 	ReservedName = "default"
 )
 
-// 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
-	Update() error
-}
-
-// ProxyProvider interface
-type ProxyProvider interface {
-	Provider
-	Proxies() []C.Proxy
-	HealthCheck()
-}
-
 type ProxySchema struct {
-	Proxies []map[string]interface{} `yaml:"proxies"`
+	Proxies []map[string]any `yaml:"proxies"`
 }
 
 // for auto gc
@@ -69,7 +35,7 @@ type proxySetProvider struct {
 }
 
 func (pp *proxySetProvider) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]interface{}{
+	return json.Marshal(map[string]any{
 		"name":        pp.Name(),
 		"type":        pp.Type().String(),
 		"vehicleType": pp.VehicleType().String(),
@@ -104,53 +70,38 @@ func (pp *proxySetProvider) Initial() error {
 	return nil
 }
 
-func (pp *proxySetProvider) Type() ProviderType {
-	return Proxy
+func (pp *proxySetProvider) Type() types.ProviderType {
+	return types.Proxy
 }
 
 func (pp *proxySetProvider) Proxies() []C.Proxy {
 	return pp.proxies
 }
 
-func proxiesParse(buf []byte) (interface{}, 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) ProxiesWithTouch() []C.Proxy {
+	pp.healthCheck.touch()
+	return pp.Proxies()
 }
 
 func (pp *proxySetProvider) setProxies(proxies []C.Proxy) {
 	pp.proxies = proxies
 	pp.healthCheck.setProxy(proxies)
+	if pp.healthCheck.auto() {
 		go pp.healthCheck.check()
 	}
+}
 
 func stopProxyProvider(pd *ProxySetProvider) {
 	pd.healthCheck.close()
 	pd.fetcher.Destroy()
 }
 
-func NewProxySetProvider(name string, interval time.Duration, vehicle Vehicle, hc *HealthCheck) *ProxySetProvider {
+func NewProxySetProvider(name string, interval time.Duration, filter string, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) {
+	filterReg, err := regexp.Compile(filter)
+	if err != nil {
+		return nil, fmt.Errorf("invalid filter regex: %w", err)
+	}
+
 	if hc.auto() {
 		go hc.process()
 	}
@@ -160,17 +111,50 @@ func NewProxySetProvider(name string, interval time.Duration, vehicle Vehicle, h
 		healthCheck: hc,
 	}
 
-	onUpdate := func(elm interface{}) {
+	onUpdate := func(elm any) {
 		ret := elm.([]C.Proxy)
 		pd.setProxies(ret)
 	}
 
-	fetcher := newFetcher(name, interval, vehicle, proxiesParse, onUpdate)
+	proxiesParseAndFilter := func(buf []byte) (any, 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 {
+			if name, ok := mapping["name"].(string); ok && len(filter) > 0 && !filterReg.MatchString(name) {
+				continue
+			}
+			proxy, err := adapter.ParseProxy(mapping)
+			if err != nil {
+				return nil, fmt.Errorf("proxy %d error: %w", idx, err)
+			}
+			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
+	}
+
+	fetcher := newFetcher(name, interval, vehicle, proxiesParseAndFilter, onUpdate)
 	pd.fetcher = fetcher
 
 	wrapper := &ProxySetProvider{pd}
 	runtime.SetFinalizer(wrapper, stopProxyProvider)
-	return wrapper
+	return wrapper, nil
 }
 
 // for auto gc
@@ -185,7 +169,7 @@ type compatibleProvider struct {
 }
 
 func (cp *compatibleProvider) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]interface{}{
+	return json.Marshal(map[string]any{
 		"name":        cp.Name(),
 		"type":        cp.Type().String(),
 		"vehicleType": cp.VehicleType().String(),
@@ -209,25 +193,30 @@ func (cp *compatibleProvider) Initial() error {
 	return nil
 }
 
-func (cp *compatibleProvider) VehicleType() VehicleType {
-	return Compatible
+func (cp *compatibleProvider) VehicleType() types.VehicleType {
+	return types.Compatible
 }
 
-func (cp *compatibleProvider) Type() ProviderType {
-	return Proxy
+func (cp *compatibleProvider) Type() types.ProviderType {
+	return types.Proxy
 }
 
 func (cp *compatibleProvider) Proxies() []C.Proxy {
 	return cp.proxies
 }
 
+func (cp *compatibleProvider) ProxiesWithTouch() []C.Proxy {
+	cp.healthCheck.touch()
+	return cp.Proxies()
+}
+
 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")
+		return nil, errors.New("provider need one proxy at least")
 	}
 
 	if hc.auto() {

adapter/provider/vehicle.go

@@ -2,49 +2,23 @@ package provider
 
 import (
 	"context"
-	"io/ioutil"
+	"io"
+	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"time"
 
 	"github.com/Dreamacro/clash/component/dialer"
+	types "github.com/Dreamacro/clash/constant/provider"
 )
 
-// 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) Type() types.VehicleType {
+	return types.File
 }
 
 func (f *FileVehicle) Path() string {
@@ -52,7 +26,7 @@ func (f *FileVehicle) Path() string {
 }
 
 func (f *FileVehicle) Read() ([]byte, error) {
-	return ioutil.ReadFile(f.path)
+	return os.ReadFile(f.path)
 }
 
 func NewFileVehicle(path string) *FileVehicle {
@@ -64,8 +38,8 @@ type HTTPVehicle struct {
 	path string
 }
 
-func (h *HTTPVehicle) Type() VehicleType {
-	return HTTP
+func (h *HTTPVehicle) Type() types.VehicleType {
+	return types.HTTP
 }
 
 func (h *HTTPVehicle) Path() string {
@@ -99,7 +73,9 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 		IdleConnTimeout:       90 * time.Second,
 		TLSHandshakeTimeout:   10 * time.Second,
 		ExpectContinueTimeout: 1 * time.Second,
-		DialContext:           dialer.DialContext,
+		DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
+			return dialer.DialContext(ctx, network, address)
+		},
 	}
 
 	client := http.Client{Transport: transport}
@@ -107,8 +83,9 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}

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/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) *SocketAdapter {
-	metadata := parseSocksAddr(target)
-	metadata.NetWork = C.TCP
-	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/outbound/direct.go

@@ -1,58 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"net"
-
-	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/resolver"
-	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.String(), metadata.DstPort)
-
-	c, err := dialer.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, error) {
-	pc, err := dialer.ListenPacket("udp", "")
-	if err != nil {
-		return nil, err
-	}
-	return newPacketConn(&directPacketConn{pc}, d), nil
-}
-
-type directPacketConn struct {
-	net.PacketConn
-}
-
-func (dp *directPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
-	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
-		if err != nil {
-			return 0, err
-		}
-		metadata.DstIP = ip
-	}
-	return dp.WriteTo(p, metadata.UDPAddr())
-}
-
-func NewDirect() *Direct {
-	return &Direct{
-		Base: &Base{
-			name: "DIRECT",
-			tp:   C.Direct,
-			udp:  true,
-		},
-	}
-}

adapters/outbound/parser.go

@@ -1,76 +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{
-			HTTPOpts: HTTPOptions{
-				Method: "GET",
-				Path:   []string{"/"},
-			},
-		}
-		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)
-	case "trojan":
-		trojanOption := &TrojanOption{}
-		err = decoder.Decode(mapping, trojanOption)
-		if err != nil {
-			break
-		}
-		proxy, err = NewTrojan(*trojanOption)
-	default:
-		return nil, fmt.Errorf("Unsupport proxy type: %s", proxyType)
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	return NewProxy(proxy), nil
-}

adapters/outbound/reject.go

@@ -1,61 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"errors"
-	"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 (r *Reject) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	return nil, errors.New("match reject rule")
-}
-
-func NewReject() *Reject {
-	return &Reject{
-		Base: &Base{
-			name: "REJECT",
-			tp:   C.Reject,
-			udp:  true,
-		},
-	}
-}
-
-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/snell.go

@@ -1,78 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/common/structure"
-	"github.com/Dreamacro/clash/component/dialer"
-	obfs "github.com/Dreamacro/clash/component/simple-obfs"
-	"github.com/Dreamacro/clash/component/snell"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Snell struct {
-	*Base
-	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) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	switch s.obfsOption.Mode {
-	case "tls":
-		c = obfs.NewTLSObfs(c, s.obfsOption.Host)
-	case "http":
-		_, port, _ := net.SplitHostPort(s.addr)
-		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 c, err
-}
-
-func (s *Snell) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", s.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", s.addr, err)
-	}
-	tcpKeepAlive(c)
-
-	c, err = s.StreamConn(c, metadata)
-	return NewConn(c, s), err
-}
-
-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)
-	}
-
-	if obfsOption.Mode != "tls" && obfsOption.Mode != "http" {
-		return nil, fmt.Errorf("snell %s obfs mode error: %s", addr, obfsOption.Mode)
-	}
-
-	return &Snell{
-		Base: &Base{
-			name: option.Name,
-			addr: addr,
-			tp:   C.Snell,
-		},
-		psk:        psk,
-		obfsOption: obfsOption,
-	}, nil
-}

adapters/outbound/trojan.go

@@ -1,116 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/trojan"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Trojan struct {
-	*Base
-	instance *trojan.Trojan
-}
-
-type TrojanOption struct {
-	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"`
-	UDP            bool     `proxy:"udp,omitempty"`
-}
-
-func (t *Trojan) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	c, err := t.instance.StreamConn(c)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-
-	err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata))
-	return c, err
-}
-
-func (t *Trojan) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", t.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-	tcpKeepAlive(c)
-	c, err = t.StreamConn(c, metadata)
-	if err != nil {
-		return nil, err
-	}
-
-	return NewConn(c, t), err
-}
-
-func (t *Trojan) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialer.DialContext(ctx, "tcp", t.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-	tcpKeepAlive(c)
-	c, err = t.instance.StreamConn(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(&trojanPacketConn{pc, c}, t), err
-}
-
-func (t *Trojan) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": t.Type().String(),
-	})
-}
-
-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,
-		ClientSessionCache: getClientSessionCache(),
-	}
-
-	if option.SNI != "" {
-		tOption.ServerName = option.SNI
-	}
-
-	return &Trojan{
-		Base: &Base{
-			name: option.Name,
-			addr: addr,
-			tp:   C.Trojan,
-			udp:  option.UDP,
-		},
-		instance: trojan.New(tOption),
-	}, nil
-}
-
-type trojanPacketConn struct {
-	net.PacketConn
-	conn net.Conn
-}
-
-func (tpc *trojanPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
-	return trojan.WritePacket(tpc.conn, serializesSocksAddr(metadata), p)
-}

adapters/outbound/vmess.go

@@ -1,205 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"net"
-	"net/http"
-	"strconv"
-	"strings"
-
-	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/resolver"
-	"github.com/Dreamacro/clash/component/vmess"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Vmess struct {
-	*Base
-	client *vmess.Client
-	option *VmessOption
-}
-
-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"`
-	HTTPOpts       HTTPOptions       `proxy:"http-opts,omitempty"`
-	WSPath         string            `proxy:"ws-path,omitempty"`
-	WSHeaders      map[string]string `proxy:"ws-headers,omitempty"`
-	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
-}
-
-type HTTPOptions struct {
-	Method  string              `proxy:"method,omitempty"`
-	Path    []string            `proxy:"path,omitempty"`
-	Headers map[string][]string `proxy:"headers,omitempty"`
-}
-
-func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	var err error
-	switch v.option.Network {
-	case "ws":
-		host, port, _ := net.SplitHostPort(v.addr)
-		wsOpts := &vmess.WebsocketConfig{
-			Host: host,
-			Port: port,
-			Path: v.option.WSPath,
-		}
-
-		if len(v.option.WSHeaders) != 0 {
-			header := http.Header{}
-			for key, value := range v.option.WSHeaders {
-				header.Add(key, value)
-			}
-			wsOpts.Headers = header
-		}
-
-		if v.option.TLS {
-			wsOpts.TLS = true
-			wsOpts.SessionCache = getClientSessionCache()
-			wsOpts.SkipCertVerify = v.option.SkipCertVerify
-		}
-		c, err = vmess.StreamWebsocketConn(c, wsOpts)
-	case "http":
-		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)
-	default:
-		// handle TLS
-		if v.option.TLS {
-			host, _, _ := net.SplitHostPort(v.addr)
-			tlsOpts := &vmess.TLSConfig{
-				Host:           host,
-				SkipCertVerify: v.option.SkipCertVerify,
-				SessionCache:   getClientSessionCache(),
-			}
-			c, err = vmess.StreamTLSConn(c, tlsOpts)
-		}
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	return v.client.StreamConn(c, parseVmessAddr(metadata))
-}
-
-func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", v.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error", v.addr)
-	}
-	tcpKeepAlive(c)
-
-	c, err = v.StreamConn(c, metadata)
-	return NewConn(c, v), err
-}
-
-func (v *Vmess) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	// vmess use stream-oriented udp, so clash needs a net.UDPAddr
-	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
-		if err != nil {
-			return nil, errors.New("can't resolve ip")
-		}
-		metadata.DstIP = ip
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialer.DialContext(ctx, "tcp", v.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error", v.addr)
-	}
-	tcpKeepAlive(c)
-	c, err = v.StreamConn(c, metadata)
-	if err != nil {
-		return nil, fmt.Errorf("new vmess client error: %v", err)
-	}
-	return newPacketConn(&vmessPacketConn{Conn: c, rAddr: metadata.UDPAddr()}, v), 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,
-		HostName: option.Server,
-		Port:     strconv.Itoa(option.Port),
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return &Vmess{
-		Base: &Base{
-			name: option.Name,
-			addr: net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
-			tp:   C.Vmess,
-			udp:  true,
-		},
-		client: client,
-		option: &option,
-	}, 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 vmessPacketConn struct {
-	net.Conn
-	rAddr net.Addr
-}
-
-func (uc *vmessPacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
-	return uc.Conn.Write(b)
-}
-
-func (uc *vmessPacketConn) WriteWithMetadata(p []byte, metadata *C.Metadata) (n int, err error) {
-	return uc.Conn.Write(p)
-}
-
-func (uc *vmessPacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
-	n, err := uc.Conn.Read(b)
-	return n, uc.rAddr, 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

@@ -1,89 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-
-	"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, error) {
-	proxy := f.findAliveProxy()
-	pc, err := proxy.DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(f)
-	}
-	return pc, 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) Unwrap(metadata *C.Metadata) C.Proxy {
-	proxy := f.findAliveProxy()
-	return proxy
-}
-
-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

@@ -1,125 +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)
-		}
-	}()
-
-	proxy := lb.Unwrap(metadata)
-
-	c, err = proxy.DialContext(ctx, metadata)
-	return
-}
-
-func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error) {
-	defer func() {
-		if err == nil {
-			pc.AppendToChains(lb)
-		}
-	}()
-
-	proxy := lb.Unwrap(metadata)
-
-	return proxy.DialUDP(metadata)
-}
-
-func (lb *LoadBalance) SupportUDP() bool {
-	return true
-}
-
-func (lb *LoadBalance) Unwrap(metadata *C.Metadata) C.Proxy {
-	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
-		}
-	}
-
-	return proxies[0]
-}
-
-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/selector.go

@@ -1,97 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-
-	"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  string
-	providers []provider.ProxyProvider
-}
-
-func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := s.selectedProxy().DialContext(ctx, metadata)
-	if err == nil {
-		c.AppendToChains(s)
-	}
-	return c, err
-}
-
-func (s *Selector) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := s.selectedProxy().DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(s)
-	}
-	return pc, err
-}
-
-func (s *Selector) SupportUDP() bool {
-	return s.selectedProxy().SupportUDP()
-}
-
-func (s *Selector) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range getProvidersProxies(s.providers) {
-		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.selectedProxy().Name()
-}
-
-func (s *Selector) Set(name string) error {
-	for _, proxy := range getProvidersProxies(s.providers) {
-		if proxy.Name() == name {
-			s.selected = name
-			s.single.Reset()
-			return nil
-		}
-	}
-
-	return errors.New("Proxy does not exist")
-}
-
-func (s *Selector) Unwrap(metadata *C.Metadata) C.Proxy {
-	return s.selectedProxy()
-}
-
-func (s *Selector) selectedProxy() C.Proxy {
-	elm, _, _ := s.single.Do(func() (interface{}, error) {
-		proxies := getProvidersProxies(s.providers)
-		for _, proxy := range proxies {
-			if proxy.Name() == s.selected {
-				return proxy, nil
-			}
-		}
-
-		return proxies[0], nil
-	})
-
-	return elm.(C.Proxy)
-}
-
-func NewSelector(name string, providers []provider.ProxyProvider) *Selector {
-	selected := providers[0].Proxies()[0].Name()
-	return &Selector{
-		Base:      outbound.NewBase(name, "", C.Selector, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
-		selected:  selected,
-	}
-}

adapters/outboundgroup/urltest.go

@@ -1,98 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"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, error) {
-	pc, err := u.fast().DialUDP(metadata)
-	if err == nil {
-		pc.AppendToChains(u)
-	}
-	return pc, err
-}
-
-func (u *URLTest) Unwrap(metadata *C.Metadata) C.Proxy {
-	return u.fast()
-}
-
-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/fetcher.go

@@ -1,154 +0,0 @@
-package provider
-
-import (
-	"bytes"
-	"crypto/md5"
-	"io/ioutil"
-	"os"
-	"time"
-
-	"github.com/Dreamacro/clash/log"
-)
-
-var (
-	fileMode os.FileMode = 0666
-)
-
-type parser = func([]byte) (interface{}, error)
-
-type fetcher struct {
-	name      string
-	vehicle   Vehicle
-	updatedAt *time.Time
-	ticker    *time.Ticker
-	hash      [16]byte
-	parser    parser
-	onUpdate  func(interface{})
-}
-
-func (f *fetcher) Name() string {
-	return f.name
-}
-
-func (f *fetcher) VehicleType() VehicleType {
-	return f.vehicle.Type()
-}
-
-func (f *fetcher) Initial() (interface{}, error) {
-	var buf []byte
-	var err error
-	var isLocal bool
-	if stat, err := os.Stat(f.vehicle.Path()); err == nil {
-		buf, err = ioutil.ReadFile(f.vehicle.Path())
-		modTime := stat.ModTime()
-		f.updatedAt = &modTime
-		isLocal = true
-	} else {
-		buf, err = f.vehicle.Read()
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	proxies, err := f.parser(buf)
-	if err != nil {
-		if !isLocal {
-			return nil, err
-		}
-
-		// parse local file error, fallback to remote
-		buf, err = f.vehicle.Read()
-		if err != nil {
-			return nil, err
-		}
-
-		proxies, err = f.parser(buf)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	if err := ioutil.WriteFile(f.vehicle.Path(), buf, fileMode); err != nil {
-		return nil, err
-	}
-
-	f.hash = md5.Sum(buf)
-
-	// pull proxies automatically
-	if f.ticker != nil {
-		go f.pullLoop()
-	}
-
-	return proxies, nil
-}
-
-func (f *fetcher) Update() (interface{}, bool, error) {
-	buf, err := f.vehicle.Read()
-	if err != nil {
-		return nil, false, err
-	}
-
-	now := time.Now()
-	hash := md5.Sum(buf)
-	if bytes.Equal(f.hash[:], hash[:]) {
-		f.updatedAt = &now
-		return nil, true, nil
-	}
-
-	proxies, err := f.parser(buf)
-	if err != nil {
-		return nil, false, err
-	}
-
-	if err := ioutil.WriteFile(f.vehicle.Path(), buf, fileMode); err != nil {
-		return nil, false, err
-	}
-
-	f.updatedAt = &now
-	f.hash = hash
-
-	return proxies, false, nil
-}
-
-func (f *fetcher) Destroy() error {
-	if f.ticker != nil {
-		f.ticker.Stop()
-	}
-	return nil
-}
-
-func (f *fetcher) pullLoop() {
-	for range f.ticker.C {
-		elm, same, err := f.Update()
-		if err != nil {
-			log.Warnln("[Provider] %s pull error: %s", f.Name(), err.Error())
-			continue
-		}
-
-		if same {
-			log.Debugln("[Provider] %s's proxies doesn't change", f.Name())
-			continue
-		}
-
-		log.Infoln("[Provider] %s's proxies update", f.Name())
-		if f.onUpdate != nil {
-			f.onUpdate(elm)
-		}
-	}
-}
-
-func newFetcher(name string, interval time.Duration, vehicle Vehicle, parser parser, onUpdate func(interface{})) *fetcher {
-	var ticker *time.Ticker
-	if interval != 0 {
-		ticker = time.NewTicker(interval)
-	}
-
-	return &fetcher{
-		name:     name,
-		ticker:   ticker,
-		vehicle:  vehicle,
-		parser:   parser,
-		onUpdate: onUpdate,
-	}
-}

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),
-	}
-}

common/batch/batch.go

@@ -0,0 +1,105 @@
+package batch
+
+import (
+	"context"
+	"sync"
+)
+
+type Option = func(b *Batch)
+
+type Result struct {
+	Value any
+	Err   error
+}
+
+type Error struct {
+	Key string
+	Err error
+}
+
+func WithConcurrencyNum(n int) Option {
+	return func(b *Batch) {
+		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 struct {
+	result map[string]Result
+	queue  chan struct{}
+	wg     sync.WaitGroup
+	mux    sync.Mutex
+	err    *Error
+	once   sync.Once
+	cancel func()
+}
+
+func (b *Batch) Go(key string, fn func() (any, 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{value, err}
+		b.mux.Lock()
+		defer b.mux.Unlock()
+		b.result[key] = ret
+	}()
+}
+
+func (b *Batch) Wait() *Error {
+	b.wg.Wait()
+	if b.cancel != nil {
+		b.cancel()
+	}
+	return b.err
+}
+
+func (b *Batch) WaitAndGetResult() (map[string]Result, *Error) {
+	err := b.Wait()
+	return b.Result(), err
+}
+
+func (b *Batch) Result() map[string]Result {
+	b.mux.Lock()
+	defer b.mux.Unlock()
+	copy := map[string]Result{}
+	for k, v := range b.result {
+		copy[k] = v
+	}
+	return copy
+}
+
+func New(ctx context.Context, opts ...Option) (*Batch, context.Context) {
+	ctx, cancel := context.WithCancel(ctx)
+
+	b := &Batch{
+		result: map[string]Result{},
+	}
+
+	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(context.Background())
+
+	now := time.Now()
+	b.Go("foo", func() (any, error) {
+		time.Sleep(time.Millisecond * 100)
+		return "foo", nil
+	})
+	b.Go("bar", func() (any, 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.(string))
+	}
+}
+
+func TestBatchWithConcurrencyNum(t *testing.T) {
+	b, _ := New(
+		context.Background(),
+		WithConcurrencyNum(3),
+	)
+
+	now := time.Now()
+	for i := 0; i < 7; i++ {
+		idx := i
+		b.Go(strconv.Itoa(idx), func() (any, 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.(string))
+	}
+}
+
+func TestBatchContext(t *testing.T) {
+	b, ctx := New(context.Background())
+
+	b.Go("error", func() (any, error) {
+		time.Sleep(time.Millisecond * 100)
+		return nil, errors.New("test error")
+	})
+
+	b.Go("ctx", func() (any, error) {
+		<-ctx.Done()
+		return nil, 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/cache/cache.go

@@ -18,11 +18,11 @@ type cache struct {
 
 type element struct {
 	Expired time.Time
-	Payload interface{}
+	Payload any
 }
 
 // Put element in Cache with its ttl
-func (c *cache) Put(key interface{}, payload interface{}, ttl time.Duration) {
+func (c *cache) Put(key any, payload any, ttl time.Duration) {
 	c.mapping.Store(key, &element{
 		Payload: payload,
 		Expired: time.Now().Add(ttl),
@@ -30,7 +30,7 @@ func (c *cache) Put(key interface{}, payload interface{}, ttl time.Duration) {
 }
 
 // Get element in Cache, and drop when it expired
-func (c *cache) Get(key interface{}) interface{} {
+func (c *cache) Get(key any) any {
 	item, exist := c.mapping.Load(key)
 	if !exist {
 		return nil
@@ -45,7 +45,7 @@ func (c *cache) Get(key interface{}) interface{} {
 }
 
 // GetWithExpire element in Cache with Expire Time
-func (c *cache) GetWithExpire(key interface{}) (payload interface{}, expired time.Time) {
+func (c *cache) GetWithExpire(key any) (payload any, expired time.Time) {
 	item, exist := c.mapping.Load(key)
 	if !exist {
 		return
@@ -60,7 +60,7 @@ func (c *cache) GetWithExpire(key interface{}) (payload interface{}, expired tim
 }
 
 func (c *cache) cleanup() {
-	c.mapping.Range(func(k, v interface{}) bool {
+	c.mapping.Range(func(k, v any) bool {
 		key := k.(string)
 		elm := v.(*element)
 		if time.Since(elm.Expired) > 0 {

common/cache/lrucache.go

@@ -12,7 +12,7 @@ import (
 type Option func(*LruCache)
 
 // EvictCallback is used to get a callback when a cache entry is evicted
-type EvictCallback = func(key interface{}, value interface{})
+type EvictCallback = func(key any, value any)
 
 // WithEvict set the evict callback
 func WithEvict(cb EvictCallback) Option {
@@ -57,7 +57,7 @@ type LruCache struct {
 	maxAge         int64
 	maxSize        int
 	mu             sync.Mutex
-	cache          map[interface{}]*list.Element
+	cache          map[any]*list.Element
 	lru            *list.List // Front is least-recent
 	updateAgeOnGet bool
 	staleReturn    bool
@@ -68,7 +68,7 @@ type LruCache struct {
 func NewLRUCache(options ...Option) *LruCache {
 	lc := &LruCache{
 		lru:   list.New(),
-		cache: make(map[interface{}]*list.Element),
+		cache: make(map[any]*list.Element),
 	}
 
 	for _, option := range options {
@@ -78,9 +78,9 @@ 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) Get(key any) (any, bool) {
 	entry := c.get(key)
 	if entry == nil {
 		return nil, false
@@ -90,11 +90,11 @@ func (c *LruCache) Get(key interface{}) (interface{}, bool) {
 	return value, true
 }
 
-// GetWithExpire returns the interface{} representation of a cached response,
+// 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) GetWithExpire(key interface{}) (interface{}, time.Time, bool) {
+func (c *LruCache) GetWithExpire(key any) (any, time.Time, bool) {
 	entry := c.get(key)
 	if entry == nil {
 		return nil, time.Time{}, false
@@ -104,7 +104,7 @@ func (c *LruCache) GetWithExpire(key interface{}) (interface{}, time.Time, bool)
 }
 
 // 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) Exist(key any) bool {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
@@ -112,8 +112,8 @@ 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) Set(key any, value any) {
 	expires := int64(0)
 	if c.maxAge > 0 {
 		expires = time.Now().Unix() + c.maxAge
@@ -121,9 +121,9 @@ func (c *LruCache) Set(key interface{}, value interface{}) {
 	c.SetWithExpire(key, value, time.Unix(expires, 0))
 }
 
-// SetWithExpire stores the interface{} representation of a response for a given key and given exires.
+// 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) SetWithExpire(key interface{}, value interface{}, expires time.Time) {
+func (c *LruCache) SetWithExpire(key any, value any, expires time.Time) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
@@ -146,7 +146,24 @@ func (c *LruCache) SetWithExpire(key interface{}, value interface{}, expires tim
 	c.maybeDeleteOldest()
 }
 
-func (c *LruCache) get(key interface{}) *entry {
+// CloneTo clone and overwrite elements to another LruCache
+func (c *LruCache) CloneTo(n *LruCache) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	n.mu.Lock()
+	defer n.mu.Unlock()
+
+	n.lru = list.New()
+	n.cache = make(map[any]*list.Element)
+
+	for e := c.lru.Front(); e != nil; e = e.Next() {
+		elm := e.Value.(*entry)
+		n.cache[elm.key] = n.lru.PushBack(elm)
+	}
+}
+
+func (c *LruCache) get(key any) *entry {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
@@ -171,7 +188,7 @@ func (c *LruCache) get(key interface{}) *entry {
 }
 
 // Delete removes the value associated with a key.
-func (c *LruCache) Delete(key string) {
+func (c *LruCache) Delete(key any) {
 	c.mu.Lock()
 
 	if le, ok := c.cache[key]; ok {
@@ -200,7 +217,7 @@ func (c *LruCache) deleteElement(le *list.Element) {
 }
 
 type entry struct {
-	key     interface{}
-	value   interface{}
+	key     any
+	value   any
 	expires int64
 }

common/cache/lrucache_test.go

@@ -126,7 +126,7 @@ func TestExist(t *testing.T) {
 
 func TestEvict(t *testing.T) {
 	temp := 0
-	evict := func(key interface{}, value interface{}) {
+	evict := func(key any, value any) {
 		temp = key.(int) + value.(int)
 	}
 
@@ -149,7 +149,6 @@ func TestSetWithExpire(t *testing.T) {
 	assert.Equal(t, nil, res)
 	assert.Equal(t, time.Time{}, expires)
 	assert.Equal(t, false, exist)
-
 }
 
 func TestStale(t *testing.T) {
@@ -164,3 +163,21 @@ func TestStale(t *testing.T) {
 	assert.Equal(t, tenSecBefore, expires)
 	assert.Equal(t, true, exist)
 }
+
+func TestCloneTo(t *testing.T) {
+	o := NewLRUCache(WithSize(10))
+	o.Set("1", 1)
+	o.Set("2", 2)
+
+	n := NewLRUCache(WithSize(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/murmur3/murmur32.go

@@ -67,7 +67,6 @@ func (d *digest32) bmix(p []byte) (tail []byte) {
 }
 
 func (d *digest32) Sum32() (h1 uint32) {
-
 	h1 = d.h1
 
 	var k1 uint32

common/net/bufconn.go

@@ -0,0 +1,44 @@
+package net
+
+import (
+	"bufio"
+	"net"
+)
+
+type BufferedConn struct {
+	r *bufio.Reader
+	net.Conn
+}
+
+func NewBufferedConn(c net.Conn) *BufferedConn {
+	if bc, ok := c.(*BufferedConn); ok {
+		return bc
+	}
+	return &BufferedConn{bufio.NewReader(c), c}
+}
+
+// Reader returns the internal bufio.Reader.
+func (c *BufferedConn) Reader() *bufio.Reader {
+	return c.r
+}
+
+// Peek returns the next n bytes without advancing the reader.
+func (c *BufferedConn) Peek(n int) ([]byte, error) {
+	return c.r.Peek(n)
+}
+
+func (c *BufferedConn) Read(p []byte) (int, error) {
+	return c.r.Read(p)
+}
+
+func (c *BufferedConn) ReadByte() (byte, error) {
+	return c.r.ReadByte()
+}
+
+func (c *BufferedConn) UnreadByte() error {
+	return c.r.UnreadByte()
+}
+
+func (c *BufferedConn) Buffered() int {
+	return c.r.Buffered()
+}

common/net/io.go

@@ -0,0 +1,11 @@
+package net
+
+import "io"
+
+type ReadOnlyReader struct {
+	io.Reader
+}
+
+type WriteOnlyWriter struct {
+	io.Writer
+}

common/net/relay.go

@@ -0,0 +1,24 @@
+package net
+
+import (
+	"io"
+	"net"
+	"time"
+)
+
+// Relay copies between left and right bidirectionally.
+func Relay(leftConn, rightConn net.Conn) {
+	ch := make(chan error)
+
+	go func() {
+		// Wrapping to avoid using *net.TCPConn.(ReadFrom)
+		// See also https://github.com/Dreamacro/clash/pull/1209
+		_, err := io.Copy(WriteOnlyWriter{Writer: leftConn}, ReadOnlyReader{Reader: rightConn})
+		leftConn.SetReadDeadline(time.Now())
+		ch <- err
+	}()
+
+	io.Copy(WriteOnlyWriter{Writer: rightConn}, ReadOnlyReader{Reader: leftConn})
+	rightConn.SetReadDeadline(time.Now())
+	<-ch
+}

common/observable/iterable.go

@@ -1,3 +1,3 @@
 package observable
 
-type Iterable <-chan interface{}
+type Iterable <-chan any

common/observable/observable_test.go

@@ -1,16 +1,16 @@
 package observable
 
 import (
-	"runtime"
 	"sync"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"go.uber.org/atomic"
 )
 
-func iterator(item []interface{}) chan interface{} {
-	ch := make(chan interface{})
+func iterator(item []any) chan any {
+	ch := make(chan any)
 	go func() {
 		time.Sleep(100 * time.Millisecond)
 		for _, elm := range item {
@@ -22,7 +22,7 @@ func iterator(item []interface{}) chan interface{} {
 }
 
 func TestObservable(t *testing.T) {
-	iter := iterator([]interface{}{1, 2, 3, 4, 5})
+	iter := iterator([]any{1, 2, 3, 4, 5})
 	src := NewObservable(iter)
 	data, err := src.Subscribe()
 	assert.Nil(t, err)
@@ -33,29 +33,29 @@ func TestObservable(t *testing.T) {
 	assert.Equal(t, count, 5)
 }
 
-func TestObservable_MutilSubscribe(t *testing.T) {
-	iter := iterator([]interface{}{1, 2, 3, 4, 5})
+func TestObservable_MultiSubscribe(t *testing.T) {
+	iter := iterator([]any{1, 2, 3, 4, 5})
 	src := NewObservable(iter)
 	ch1, _ := src.Subscribe()
 	ch2, _ := src.Subscribe()
-	count := 0
+	count := atomic.NewInt32(0)
 
 	var wg sync.WaitGroup
 	wg.Add(2)
-	waitCh := func(ch <-chan interface{}) {
+	waitCh := func(ch <-chan any) {
 		for range ch {
-			count++
+			count.Inc()
 		}
 		wg.Done()
 	}
 	go waitCh(ch1)
 	go waitCh(ch2)
 	wg.Wait()
-	assert.Equal(t, count, 10)
+	assert.Equal(t, int32(10), count.Load())
 }
 
 func TestObservable_UnSubscribe(t *testing.T) {
-	iter := iterator([]interface{}{1, 2, 3, 4, 5})
+	iter := iterator([]any{1, 2, 3, 4, 5})
 	src := NewObservable(iter)
 	data, err := src.Subscribe()
 	assert.Nil(t, err)
@@ -65,7 +65,7 @@ func TestObservable_UnSubscribe(t *testing.T) {
 }
 
 func TestObservable_SubscribeClosedSource(t *testing.T) {
-	iter := iterator([]interface{}{1})
+	iter := iterator([]any{1})
 	src := NewObservable(iter)
 	data, _ := src.Subscribe()
 	<-data
@@ -75,17 +75,14 @@ func TestObservable_SubscribeClosedSource(t *testing.T) {
 }
 
 func TestObservable_UnSubscribeWithNotExistSubscription(t *testing.T) {
-	sub := Subscription(make(chan interface{}))
-	iter := iterator([]interface{}{1})
+	sub := Subscription(make(chan any))
+	iter := iterator([]any{1})
 	src := NewObservable(iter)
 	src.UnSubscribe(sub)
 }
 
 func TestObservable_SubscribeGoroutineLeak(t *testing.T) {
-	// waiting for other goroutine recycle
-	time.Sleep(120 * time.Millisecond)
-	init := runtime.NumGoroutine()
-	iter := iterator([]interface{}{1, 2, 3, 4, 5})
+	iter := iterator([]any{1, 2, 3, 4, 5})
 	src := NewObservable(iter)
 	max := 100
 
@@ -97,7 +94,7 @@ func TestObservable_SubscribeGoroutineLeak(t *testing.T) {
 
 	var wg sync.WaitGroup
 	wg.Add(max)
-	waitCh := func(ch <-chan interface{}) {
+	waitCh := func(ch <-chan any) {
 		for range ch {
 		}
 		wg.Done()
@@ -107,6 +104,43 @@ func TestObservable_SubscribeGoroutineLeak(t *testing.T) {
 		go waitCh(ch)
 	}
 	wg.Wait()
-	now := runtime.NumGoroutine()
-	assert.Equal(t, init, now)
+
+	for _, sub := range list {
+		_, more := <-sub
+		assert.False(t, more)
+	}
+
+	_, more := <-list[0]
+	assert.False(t, more)
+}
+
+func Benchmark_Observable_1000(b *testing.B) {
+	ch := make(chan any)
+	o := NewObservable(ch)
+	num := 1000
+
+	subs := []Subscription{}
+	for i := 0; i < num; i++ {
+		sub, _ := o.Subscribe()
+		subs = append(subs, sub)
+	}
+
+	wg := sync.WaitGroup{}
+	wg.Add(num)
+
+	b.ResetTimer()
+	for _, sub := range subs {
+		go func(s Subscription) {
+			for range s {
+			}
+			wg.Done()
+		}(sub)
+	}
+
+	for i := 0; i < b.N; i++ {
+		ch <- i
+	}
+
+	close(ch)
+	wg.Wait()
 }

common/observable/subscriber.go

@@ -2,34 +2,32 @@ package observable
 
 import (
 	"sync"
-
-	"gopkg.in/eapache/channels.v1"
 )
 
-type Subscription <-chan interface{}
+type Subscription <-chan any
 
 type Subscriber struct {
-	buffer *channels.InfiniteChannel
+	buffer chan any
 	once   sync.Once
 }
 
-func (s *Subscriber) Emit(item interface{}) {
-	s.buffer.In() <- item
+func (s *Subscriber) Emit(item any) {
+	s.buffer <- item
 }
 
 func (s *Subscriber) Out() Subscription {
-	return s.buffer.Out()
+	return s.buffer
 }
 
 func (s *Subscriber) Close() {
 	s.once.Do(func() {
-		s.buffer.Close()
+		close(s.buffer)
 	})
 }
 
 func newSubscriber() *Subscriber {
 	sub := &Subscriber{
-		buffer: channels.NewInfiniteChannel(),
+		buffer: make(chan any, 200),
 	}
 	return sub
 }

common/picker/picker.go

@@ -17,7 +17,7 @@ type Picker struct {
 
 	once    sync.Once
 	errOnce sync.Once
-	result  interface{}
+	result  any
 	err     error
 }
 
@@ -43,7 +43,7 @@ func WithTimeout(ctx context.Context, timeout time.Duration) (*Picker, context.C
 
 // Wait blocks until all function calls from the Go method have returned,
 // then returns the first nil error result (if any) from them.
-func (p *Picker) Wait() interface{} {
+func (p *Picker) Wait() any {
 	p.wg.Wait()
 	if p.cancel != nil {
 		p.cancel()
@@ -58,7 +58,7 @@ func (p *Picker) Error() error {
 
 // Go calls the given function in a new goroutine.
 // The first call to return a nil error cancels the group; its result will be returned by Wait.
-func (p *Picker) Go(f func() (interface{}, error)) {
+func (p *Picker) Go(f func() (any, error)) {
 	p.wg.Add(1)
 
 	go func() {

common/picker/picker_test.go

@@ -8,8 +8,8 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func sleepAndSend(ctx context.Context, delay int, input interface{}) func() (interface{}, error) {
-	return func() (interface{}, error) {
+func sleepAndSend(ctx context.Context, delay int, input any) func() (any, error) {
+	return func() (any, error) {
 		timer := time.NewTimer(time.Millisecond * time.Duration(delay))
 		select {
 		case <-timer.C:

common/pool/alloc.go

@@ -8,11 +8,7 @@ import (
 	"sync"
 )
 
-var defaultAllocator *Allocator
-
-func init() {
-	defaultAllocator = NewAllocator()
-}
+var defaultAllocator = NewAllocator()
 
 // Allocator for incoming frames, optimized to prevent overwriting after zeroing
 type Allocator struct {
@@ -27,7 +23,7 @@ func NewAllocator() *Allocator {
 	alloc.buffers = make([]sync.Pool, 17) // 1B -> 64K
 	for k := range alloc.buffers {
 		i := k
-		alloc.buffers[k].New = func() interface{} {
+		alloc.buffers[k].New = func() any {
 			return make([]byte, 1<<uint32(i))
 		}
 	}
@@ -55,11 +51,14 @@ func (alloc *Allocator) Put(buf []byte) error {
 	if cap(buf) == 0 || cap(buf) > 65536 || cap(buf) != 1<<bits {
 		return errors.New("allocator Put() incorrect buffer size")
 	}
+
+	//nolint
+	//lint:ignore SA6002 ignore temporarily
 	alloc.buffers[bits].Put(buf)
 	return nil
 }
 
-// msb return the pos of most significiant bit
+// msb return the pos of most significant bit
 func msb(size int) uint16 {
 	return uint16(bits.Len32(uint32(size)) - 1)
 }

common/pool/alloc_test.go

@@ -25,11 +25,11 @@ func TestAllocGet(t *testing.T) {
 func TestAllocPut(t *testing.T) {
 	alloc := NewAllocator()
 	assert.NotNil(t, alloc.Put(nil), "put nil misbehavior")
-	assert.NotNil(t, alloc.Put(make([]byte, 3, 3)), "put elem:3 []bytes misbehavior")
-	assert.Nil(t, alloc.Put(make([]byte, 4, 4)), "put elem:4 []bytes misbehavior")
+	assert.NotNil(t, alloc.Put(make([]byte, 3)), "put elem:3 []bytes misbehavior")
+	assert.Nil(t, alloc.Put(make([]byte, 4)), "put elem:4 []bytes misbehavior")
 	assert.Nil(t, alloc.Put(make([]byte, 1023, 1024)), "put elem:1024 []bytes misbehavior")
-	assert.Nil(t, alloc.Put(make([]byte, 65536, 65536)), "put elem:65536 []bytes misbehavior")
-	assert.NotNil(t, alloc.Put(make([]byte, 65537, 65537)), "put elem:65537 []bytes misbehavior")
+	assert.Nil(t, alloc.Put(make([]byte, 65536)), "put elem:65536 []bytes misbehavior")
+	assert.NotNil(t, alloc.Put(make([]byte, 65537)), "put elem:65537 []bytes misbehavior")
 }
 
 func TestAllocPutThenGet(t *testing.T) {

common/pool/buffer.go

@@ -0,0 +1,17 @@
+package pool
+
+import (
+	"bytes"
+	"sync"
+)
+
+var bufferPool = sync.Pool{New: func() any { return &bytes.Buffer{} }}
+
+func GetBuffer() *bytes.Buffer {
+	return bufferPool.Get().(*bytes.Buffer)
+}
+
+func PutBuffer(buf *bytes.Buffer) {
+	buf.Reset()
+	bufferPool.Put(buf)
+}

common/pool/pool.go

@@ -5,6 +5,11 @@ const (
 	// but the maximum packet size of vmess/shadowsocks is about 16 KiB
 	// so define a buffer of 20 KiB to reduce the memory of each TCP relay
 	RelayBufferSize = 20 * 1024
+
+	// RelayBufferSize uses 20KiB, but due to the allocator it will actually
+	// request 32Kib. Most UDPs are smaller than the MTU, and the TUN's MTU
+	// set to 9000, so the UDP Buffer size set to 16Kib
+	UDPBufferSize = 16 * 1024
 )
 
 func Get(size int) []byte {

common/queue/queue.go

@@ -6,12 +6,12 @@ import (
 
 // Queue is a simple concurrent safe queue
 type Queue struct {
-	items []interface{}
+	items []any
 	lock  sync.RWMutex
 }
 
 // Put add the item to the queue.
-func (q *Queue) Put(items ...interface{}) {
+func (q *Queue) Put(items ...any) {
 	if len(items) == 0 {
 		return
 	}
@@ -22,7 +22,7 @@ func (q *Queue) Put(items ...interface{}) {
 }
 
 // Pop returns the head of items.
-func (q *Queue) Pop() interface{} {
+func (q *Queue) Pop() any {
 	if len(q.items) == 0 {
 		return nil
 	}
@@ -35,7 +35,7 @@ func (q *Queue) Pop() interface{} {
 }
 
 // Last returns the last of item.
-func (q *Queue) Last() interface{} {
+func (q *Queue) Last() any {
 	if len(q.items) == 0 {
 		return nil
 	}
@@ -47,8 +47,8 @@ func (q *Queue) Last() interface{} {
 }
 
 // Copy get the copy of queue.
-func (q *Queue) Copy() []interface{} {
-	items := []interface{}{}
+func (q *Queue) Copy() []any {
+	items := []any{}
 	q.lock.RLock()
 	items = append(items, q.items...)
 	q.lock.RUnlock()
@@ -66,6 +66,6 @@ func (q *Queue) Len() int64 {
 // New is a constructor for a new concurrent safe queue.
 func New(hint int64) *Queue {
 	return &Queue{
-		items: make([]interface{}, 0, hint),
+		items: make([]any, 0, hint),
 	}
 }

common/singledo/singledo.go

@@ -7,7 +7,7 @@ import (
 
 type call struct {
 	wg  sync.WaitGroup
-	val interface{}
+	val any
 	err error
 }
 
@@ -20,11 +20,12 @@ type Single struct {
 }
 
 type Result struct {
-	Val interface{}
+	Val any
 	Err error
 }
 
-func (s *Single) Do(fn func() (interface{}, error)) (v interface{}, err error, shared bool) {
+// Do single.Do likes sync.singleFlight
+func (s *Single) Do(fn func() (any, error)) (v any, err error, shared bool) {
 	s.mux.Lock()
 	now := time.Now()
 	if now.Before(s.last.Add(s.wait)) {
@@ -44,9 +45,12 @@ func (s *Single) Do(fn func() (interface{}, error)) (v interface{}, err error, s
 	s.mux.Unlock()
 	call.val, call.err = fn()
 	call.wg.Done()
+
+	s.mux.Lock()
 	s.call = nil
 	s.result = &Result{call.val, call.err}
 	s.last = now
+	s.mux.Unlock()
 	return call.val, call.err, false
 }
 

common/singledo/singledo_test.go

@@ -6,13 +6,14 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"go.uber.org/atomic"
 )
 
 func TestBasic(t *testing.T) {
 	single := NewSingle(time.Millisecond * 30)
 	foo := 0
-	shardCount := 0
-	call := func() (interface{}, error) {
+	shardCount := atomic.NewInt32(0)
+	call := func() (any, error) {
 		foo++
 		time.Sleep(time.Millisecond * 5)
 		return nil, nil
@@ -25,7 +26,7 @@ func TestBasic(t *testing.T) {
 		go func() {
 			_, _, shard := single.Do(call)
 			if shard {
-				shardCount++
+				shardCount.Inc()
 			}
 			wg.Done()
 		}()
@@ -33,13 +34,13 @@ func TestBasic(t *testing.T) {
 
 	wg.Wait()
 	assert.Equal(t, 1, foo)
-	assert.Equal(t, 4, shardCount)
+	assert.Equal(t, int32(4), shardCount.Load())
 }
 
 func TestTimer(t *testing.T) {
 	single := NewSingle(time.Millisecond * 30)
 	foo := 0
-	call := func() (interface{}, error) {
+	call := func() (any, error) {
 		foo++
 		return nil, nil
 	}
@@ -55,7 +56,7 @@ func TestTimer(t *testing.T) {
 func TestReset(t *testing.T) {
 	single := NewSingle(time.Millisecond * 30)
 	foo := 0
-	call := func() (interface{}, error) {
+	call := func() (any, error) {
 		foo++
 		return nil, nil
 	}

common/sockopt/reuseaddr_other.go

@@ -1,4 +1,4 @@
-// +build !linux
+//go:build !linux
 
 package sockopt
 

common/structure/structure.go

@@ -28,8 +28,8 @@ func NewDecoder(option Option) *Decoder {
 	return &Decoder{option: &option}
 }
 
-// Decode transform a map[string]interface{} to a struct
-func (d *Decoder) Decode(src map[string]interface{}, dst interface{}) error {
+// Decode transform a map[string]any to a struct
+func (d *Decoder) Decode(src map[string]any, dst any) error {
 	if reflect.TypeOf(dst).Kind() != reflect.Ptr {
 		return fmt.Errorf("Decode must recive a ptr struct")
 	}
@@ -37,14 +37,16 @@ func (d *Decoder) Decode(src map[string]interface{}, dst interface{}) error {
 	v := reflect.ValueOf(dst).Elem()
 	for idx := 0; idx < v.NumField(); idx++ {
 		field := t.Field(idx)
+		if field.Anonymous {
+			if err := d.decodeStruct(field.Name, src, v.Field(idx)); err != nil {
+				return err
+			}
+			continue
+		}
 
 		tag := field.Tag.Get(d.option.TagName)
-		str := strings.SplitN(tag, ",", 2)
-		key := str[0]
-		omitempty := false
-		if len(str) > 1 {
-			omitempty = str[1] == "omitempty"
-		}
+		key, omitKey, found := strings.Cut(tag, ",")
+		omitempty := found && omitKey == "omitempty"
 
 		value, ok := src[key]
 		if !ok || value == nil {
@@ -62,7 +64,7 @@ func (d *Decoder) Decode(src map[string]interface{}, dst interface{}) error {
 	return nil
 }
 
-func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error {
+func (d *Decoder) decode(name string, data any, val reflect.Value) error {
 	switch val.Kind() {
 	case reflect.Int:
 		return d.decodeInt(name, data, val)
@@ -83,12 +85,14 @@ func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error
 	}
 }
 
-func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) (err error) {
+func (d *Decoder) decodeInt(name string, data any, val reflect.Value) (err error) {
 	dataVal := reflect.ValueOf(data)
 	kind := dataVal.Kind()
 	switch {
 	case kind == reflect.Int:
 		val.SetInt(dataVal.Int())
+	case kind == reflect.Float64 && d.option.WeaklyTypedInput:
+		val.SetInt(int64(dataVal.Float()))
 	case kind == reflect.String && d.option.WeaklyTypedInput:
 		var i int64
 		i, err = strconv.ParseInt(dataVal.String(), 0, val.Type().Bits())
@@ -106,7 +110,7 @@ func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) (e
 	return err
 }
 
-func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value) (err error) {
+func (d *Decoder) decodeString(name string, data any, val reflect.Value) (err error) {
 	dataVal := reflect.ValueOf(data)
 	kind := dataVal.Kind()
 	switch {
@@ -123,7 +127,7 @@ func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value)
 	return err
 }
 
-func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) (err error) {
+func (d *Decoder) decodeBool(name string, data any, val reflect.Value) (err error) {
 	dataVal := reflect.ValueOf(data)
 	kind := dataVal.Kind()
 	switch {
@@ -140,7 +144,7 @@ func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) (
 	return err
 }
 
-func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error {
+func (d *Decoder) decodeSlice(name string, data any, val reflect.Value) error {
 	dataVal := reflect.Indirect(reflect.ValueOf(data))
 	valType := val.Type()
 	valElemType := valType.Elem()
@@ -155,9 +159,19 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
 		for valSlice.Len() <= i {
 			valSlice = reflect.Append(valSlice, reflect.Zero(valElemType))
 		}
-		currentField := valSlice.Index(i)
-
 		fieldName := fmt.Sprintf("%s[%d]", name, i)
+		if currentData == nil {
+			// in weakly type mode, null will convert to zero value
+			if d.option.WeaklyTypedInput {
+				continue
+			}
+			// in non-weakly type mode, null will convert to nil if element's zero value is nil, otherwise return an error
+			if elemKind := valElemType.Kind(); elemKind == reflect.Map || elemKind == reflect.Slice {
+				continue
+			}
+			return fmt.Errorf("'%s' can not be null", fieldName)
+		}
+		currentField := valSlice.Index(i)
 		if err := d.decode(fieldName, currentData, currentField); err != nil {
 			return err
 		}
@@ -167,7 +181,7 @@ func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value)
 	return nil
 }
 
-func (d *Decoder) decodeMap(name string, data interface{}, val reflect.Value) error {
+func (d *Decoder) decodeMap(name string, data any, val reflect.Value) error {
 	valType := val.Type()
 	valKeyType := valType.Key()
 	valElemType := valType.Elem()
@@ -239,7 +253,7 @@ func (d *Decoder) decodeMapFromMap(name string, dataVal reflect.Value, val refle
 	return nil
 }
 
-func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value) error {
+func (d *Decoder) decodeStruct(name string, data any, val reflect.Value) error {
 	dataVal := reflect.Indirect(reflect.ValueOf(data))
 
 	// If the type of the value to write to and the data match directly,
@@ -267,7 +281,7 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
 	}
 
 	dataValKeys := make(map[reflect.Value]struct{})
-	dataValKeysUnused := make(map[interface{}]struct{})
+	dataValKeysUnused := make(map[any]struct{})
 	for _, dataValKey := range dataVal.MapKeys() {
 		dataValKeys[dataValKey] = struct{}{}
 		dataValKeysUnused[dataValKey.Interface()] = struct{}{}
@@ -392,7 +406,7 @@ func (d *Decoder) decodeStructFromMap(name string, dataVal, val reflect.Value) e
 	return nil
 }
 
-func (d *Decoder) setInterface(name string, data interface{}, val reflect.Value) (err error) {
+func (d *Decoder) setInterface(name string, data any, val reflect.Value) (err error) {
 	dataVal := reflect.ValueOf(data)
 	val.Set(dataVal)
 	return nil

common/structure/structure_test.go

@@ -1,12 +1,15 @@
 package structure
 
 import (
-	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
-var decoder = NewDecoder(Option{TagName: "test"})
-var weakTypeDecoder = NewDecoder(Option{TagName: "test", WeaklyTypedInput: true})
+var (
+	decoder         = NewDecoder(Option{TagName: "test"})
+	weakTypeDecoder = NewDecoder(Option{TagName: "test", WeaklyTypedInput: true})
+)
 
 type Baz struct {
 	Foo int    `test:"foo"`
@@ -24,7 +27,7 @@ type BazOptional struct {
 }
 
 func TestStructure_Basic(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo":   1,
 		"bar":   "test",
 		"extra": false,
@@ -37,16 +40,12 @@ func TestStructure_Basic(t *testing.T) {
 
 	s := &Baz{}
 	err := decoder.Decode(rawMap, s)
-	if err != nil {
-		t.Fatal(err.Error())
-	}
-	if !reflect.DeepEqual(s, goal) {
-		t.Fatalf("bad: %#v", s)
-	}
+	assert.Nil(t, err)
+	assert.Equal(t, goal, s)
 }
 
 func TestStructure_Slice(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo": 1,
 		"bar": []string{"one", "two"},
 	}
@@ -58,16 +57,12 @@ func TestStructure_Slice(t *testing.T) {
 
 	s := &BazSlice{}
 	err := decoder.Decode(rawMap, s)
-	if err != nil {
-		t.Fatal(err.Error())
-	}
-	if !reflect.DeepEqual(s, goal) {
-		t.Fatalf("bad: %#v", s)
-	}
+	assert.Nil(t, err)
+	assert.Equal(t, goal, s)
 }
 
 func TestStructure_Optional(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo": 1,
 	}
 
@@ -77,50 +72,40 @@ func TestStructure_Optional(t *testing.T) {
 
 	s := &BazOptional{}
 	err := decoder.Decode(rawMap, s)
-	if err != nil {
-		t.Fatal(err.Error())
-	}
-	if !reflect.DeepEqual(s, goal) {
-		t.Fatalf("bad: %#v", s)
-	}
+	assert.Nil(t, err)
+	assert.Equal(t, goal, s)
 }
 
 func TestStructure_MissingKey(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo": 1,
 	}
 
 	s := &Baz{}
 	err := decoder.Decode(rawMap, s)
-	if err == nil {
-		t.Fatalf("should throw error: %#v", s)
-	}
+	assert.NotNilf(t, err, "should throw error: %#v", s)
 }
 
 func TestStructure_ParamError(t *testing.T) {
-	rawMap := map[string]interface{}{}
+	rawMap := map[string]any{}
 	s := Baz{}
 	err := decoder.Decode(rawMap, s)
-	if err == nil {
-		t.Fatalf("should throw error: %#v", s)
-	}
+	assert.NotNilf(t, err, "should throw error: %#v", s)
 }
 
 func TestStructure_SliceTypeError(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo": 1,
 		"bar": []int{1, 2},
 	}
 
 	s := &BazSlice{}
 	err := decoder.Decode(rawMap, s)
-	if err == nil {
-		t.Fatalf("should throw error: %#v", s)
-	}
+	assert.NotNilf(t, err, "should throw error: %#v", s)
 }
 
 func TestStructure_WeakType(t *testing.T) {
-	rawMap := map[string]interface{}{
+	rawMap := map[string]any{
 		"foo": "1",
 		"bar": []int{1},
 	}
@@ -132,10 +117,65 @@ func TestStructure_WeakType(t *testing.T) {
 
 	s := &BazSlice{}
 	err := weakTypeDecoder.Decode(rawMap, s)
-	if err != nil {
-		t.Fatal(err.Error())
+	assert.Nil(t, err)
+	assert.Equal(t, goal, s)
 }
-	if !reflect.DeepEqual(s, goal) {
-		t.Fatalf("bad: %#v", s)
+
+func TestStructure_Nest(t *testing.T) {
+	rawMap := map[string]any{
+		"foo": 1,
 	}
+
+	goal := BazOptional{
+		Foo: 1,
+	}
+
+	s := &struct {
+		BazOptional
+	}{}
+	err := decoder.Decode(rawMap, s)
+	assert.Nil(t, err)
+	assert.Equal(t, s.BazOptional, goal)
+}
+
+func TestStructure_SliceNilValue(t *testing.T) {
+	rawMap := map[string]any{
+		"foo": 1,
+		"bar": []any{"bar", nil},
+	}
+
+	goal := &BazSlice{
+		Foo: 1,
+		Bar: []string{"bar", ""},
+	}
+
+	s := &BazSlice{}
+	err := weakTypeDecoder.Decode(rawMap, s)
+	assert.Nil(t, err)
+	assert.Equal(t, goal.Bar, s.Bar)
+
+	s = &BazSlice{}
+	err = decoder.Decode(rawMap, s)
+	assert.NotNil(t, err)
+}
+
+func TestStructure_SliceNilValueComplex(t *testing.T) {
+	rawMap := map[string]any{
+		"bar": []any{map[string]any{"bar": "foo"}, nil},
+	}
+
+	s := &struct {
+		Bar []map[string]any `test:"bar"`
+	}{}
+
+	err := decoder.Decode(rawMap, s)
+	assert.Nil(t, err)
+	assert.Nil(t, s.Bar[1])
+
+	ss := &struct {
+		Bar []Baz `test:"bar"`
+	}{}
+
+	err = decoder.Decode(rawMap, ss)
+	assert.NotNil(t, err)
 }

component/auth/auth.go

@@ -36,7 +36,7 @@ func NewAuthenticator(users []AuthUser) Authenticator {
 		au.storage.Store(user.User, user.Pass)
 	}
 	usernames := make([]string, 0, len(users))
-	au.storage.Range(func(key, value interface{}) bool {
+	au.storage.Range(func(key, value any) bool {
 		usernames = append(usernames, key.(string))
 		return true
 	})

component/dhcp/conn.go

@@ -0,0 +1,18 @@
+package dhcp
+
+import (
+	"context"
+	"net"
+	"runtime"
+
+	"github.com/Dreamacro/clash/component/dialer"
+)
+
+func ListenDHCPClient(ctx context.Context, ifaceName string) (net.PacketConn, error) {
+	listenAddr := "0.0.0.0:68"
+	if runtime.GOOS == "linux" || runtime.GOOS == "android" {
+		listenAddr = "255.255.255.255:68"
+	}
+
+	return dialer.ListenPacket(ctx, "udp4", listenAddr, dialer.WithInterface(ifaceName), dialer.WithAddrReuse(true))
+}

component/dhcp/dhcp.go

@@ -0,0 +1,88 @@
+package dhcp
+
+import (
+	"context"
+	"errors"
+	"net"
+
+	"github.com/Dreamacro/clash/component/iface"
+
+	"github.com/insomniacslk/dhcp/dhcpv4"
+)
+
+var (
+	ErrNotResponding = errors.New("DHCP not responding")
+	ErrNotFound      = errors.New("DNS option not found")
+)
+
+func ResolveDNSFromDHCP(context context.Context, ifaceName string) ([]net.IP, error) {
+	conn, err := ListenDHCPClient(context, ifaceName)
+	if err != nil {
+		return nil, err
+	}
+	defer conn.Close()
+
+	result := make(chan []net.IP, 1)
+
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
+	if err != nil {
+		return nil, err
+	}
+
+	discovery, err := dhcpv4.NewDiscovery(ifaceObj.HardwareAddr, dhcpv4.WithBroadcast(true), dhcpv4.WithRequestedOptions(dhcpv4.OptionDomainNameServer))
+	if err != nil {
+		return nil, err
+	}
+
+	go receiveOffer(conn, discovery.TransactionID, result)
+
+	_, err = conn.WriteTo(discovery.ToBytes(), &net.UDPAddr{IP: net.IPv4bcast, Port: 67})
+	if err != nil {
+		return nil, err
+	}
+
+	select {
+	case r, ok := <-result:
+		if !ok {
+			return nil, ErrNotFound
+		}
+		return r, nil
+	case <-context.Done():
+		return nil, ErrNotResponding
+	}
+}
+
+func receiveOffer(conn net.PacketConn, id dhcpv4.TransactionID, result chan<- []net.IP) {
+	defer close(result)
+
+	buf := make([]byte, dhcpv4.MaxMessageSize)
+
+	for {
+		n, _, err := conn.ReadFrom(buf)
+		if err != nil {
+			return
+		}
+
+		pkt, err := dhcpv4.FromBytes(buf[:n])
+		if err != nil {
+			continue
+		}
+
+		if pkt.MessageType() != dhcpv4.MessageTypeOffer {
+			continue
+		}
+
+		if pkt.TransactionID != id {
+			continue
+		}
+
+		dns := pkt.DNS()
+		if len(dns) == 0 {
+			return
+		}
+
+		result <- dns
+
+		return
+	}
+}

component/dialer/bind_darwin.go

@@ -0,0 +1,66 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+
+	"github.com/Dreamacro/clash/component/iface"
+
+	"golang.org/x/sys/unix"
+)
+
+type controlFn = func(network, address string, c syscall.RawConn) error
+
+func bindControl(ifaceIdx int, chain controlFn) controlFn {
+	return func(network, address string, c syscall.RawConn) (err error) {
+		defer func() {
+			if err == nil && chain != nil {
+				err = chain(network, address, c)
+			}
+		}()
+
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return
+			}
+		}
+
+		var innerErr error
+		err = c.Control(func(fd uintptr) {
+			switch network {
+			case "tcp4", "udp4":
+				innerErr = unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_BOUND_IF, ifaceIdx)
+			case "tcp6", "udp6":
+				innerErr = unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_BOUND_IF, ifaceIdx)
+			}
+		})
+
+		if innerErr != nil {
+			err = innerErr
+		}
+
+		return
+	}
+}
+
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ net.IP) error {
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
+	if err != nil {
+		return err
+	}
+
+	dialer.Control = bindControl(ifaceObj.Index, dialer.Control)
+	return nil
+}
+
+func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string) (string, error) {
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
+	if err != nil {
+		return "", err
+	}
+
+	lc.Control = bindControl(ifaceObj.Index, lc.Control)
+	return address, nil
+}

component/dialer/bind_linux.go

@@ -0,0 +1,51 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+type controlFn = func(network, address string, c syscall.RawConn) error
+
+func bindControl(ifaceName string, chain controlFn) controlFn {
+	return func(network, address string, c syscall.RawConn) (err error) {
+		defer func() {
+			if err == nil && chain != nil {
+				err = chain(network, address, c)
+			}
+		}()
+
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return
+			}
+		}
+
+		var innerErr error
+		err = c.Control(func(fd uintptr) {
+			innerErr = unix.BindToDevice(int(fd), ifaceName)
+		})
+
+		if innerErr != nil {
+			err = innerErr
+		}
+
+		return
+	}
+}
+
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ net.IP) error {
+	dialer.Control = bindControl(ifaceName, dialer.Control)
+
+	return nil
+}
+
+func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string) (string, error) {
+	lc.Control = bindControl(ifaceName, lc.Control)
+
+	return address, nil
+}

component/dialer/bind_others.go

@@ -0,0 +1,92 @@
+//go:build !linux && !darwin
+
+package dialer
+
+import (
+	"net"
+	"strconv"
+	"strings"
+
+	"github.com/Dreamacro/clash/component/iface"
+)
+
+func lookupLocalAddr(ifaceName string, network string, destination net.IP, port int) (net.Addr, error) {
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
+	if err != nil {
+		return nil, err
+	}
+
+	var addr *net.IPNet
+	switch network {
+	case "udp4", "tcp4":
+		addr, err = ifaceObj.PickIPv4Addr(destination)
+	case "tcp6", "udp6":
+		addr, err = ifaceObj.PickIPv6Addr(destination)
+	default:
+		if destination != nil {
+			if destination.To4() != nil {
+				addr, err = ifaceObj.PickIPv4Addr(destination)
+			} else {
+				addr, err = ifaceObj.PickIPv6Addr(destination)
+			}
+		} else {
+			addr, err = ifaceObj.PickIPv4Addr(destination)
+		}
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if strings.HasPrefix(network, "tcp") {
+		return &net.TCPAddr{
+			IP:   addr.IP,
+			Port: port,
+		}, nil
+	} else if strings.HasPrefix(network, "udp") {
+		return &net.UDPAddr{
+			IP:   addr.IP,
+			Port: port,
+		}, nil
+	}
+
+	return nil, iface.ErrAddrNotFound
+}
+
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, network string, destination net.IP) error {
+	if !destination.IsGlobalUnicast() {
+		return nil
+	}
+
+	local := uint64(0)
+	if dialer.LocalAddr != nil {
+		_, port, err := net.SplitHostPort(dialer.LocalAddr.String())
+		if err == nil {
+			local, _ = strconv.ParseUint(port, 10, 16)
+		}
+	}
+
+	addr, err := lookupLocalAddr(ifaceName, network, destination, int(local))
+	if err != nil {
+		return err
+	}
+
+	dialer.LocalAddr = addr
+
+	return nil
+}
+
+func bindIfaceToListenConfig(ifaceName string, _ *net.ListenConfig, network, address string) (string, error) {
+	_, port, err := net.SplitHostPort(address)
+	if err != nil {
+		port = "0"
+	}
+
+	local, _ := strconv.ParseUint(port, 10, 16)
+
+	addr, err := lookupLocalAddr(ifaceName, network, nil, int(local))
+	if err != nil {
+		return "", err
+	}
+
+	return addr.String(), nil
+}

component/dialer/dialer.go

@@ -8,33 +8,7 @@ import (
 	"github.com/Dreamacro/clash/component/resolver"
 )
 
-func Dialer() (*net.Dialer, error) {
-	dialer := &net.Dialer{}
-	if DialerHook != nil {
-		if err := DialerHook(dialer); err != nil {
-			return nil, err
-		}
-	}
-
-	return dialer, nil
-}
-
-func ListenConfig() (*net.ListenConfig, error) {
-	cfg := &net.ListenConfig{}
-	if ListenConfigHook != nil {
-		if err := ListenConfigHook(cfg); err != nil {
-			return nil, err
-		}
-	}
-
-	return cfg, nil
-}
-
-func Dial(network, address string) (net.Conn, error) {
-	return DialContext(context.Background(), network, address)
-}
-
-func DialContext(ctx context.Context, network, address string) (net.Conn, error) {
+func DialContext(ctx context.Context, network, address string, options ...Option) (net.Conn, error) {
 	switch network {
 	case "tcp4", "tcp6", "udp4", "udp6":
 		host, port, err := net.SplitHostPort(address)
@@ -42,11 +16,6 @@ func DialContext(ctx context.Context, network, address string) (net.Conn, error)
 			return nil, err
 		}
 
-		dialer, err := Dialer()
-		if err != nil {
-			return nil, err
-		}
-
 		var ip net.IP
 		switch network {
 		case "tcp4", "udp4":
@@ -54,41 +23,78 @@ func DialContext(ctx context.Context, network, address string) (net.Conn, error)
 		default:
 			ip, err = resolver.ResolveIPv6(host)
 		}
-
 		if err != nil {
 			return nil, err
 		}
 
-		if DialHook != nil {
-			if err := DialHook(dialer, network, ip); err != nil {
-				return nil, err
-			}
-		}
-		return dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), port))
+		return dialContext(ctx, network, ip, port, options)
 	case "tcp", "udp":
-		return dualStackDailContext(ctx, network, address)
+		return dualStackDialContext(ctx, network, address, options)
 	default:
 		return nil, errors.New("network invalid")
 	}
 }
 
-func ListenPacket(network, address string) (net.PacketConn, error) {
-	lc, err := ListenConfig()
+func ListenPacket(ctx context.Context, network, address string, options ...Option) (net.PacketConn, error) {
+	cfg := &option{
+		interfaceName: DefaultInterface.Load(),
+		routingMark:   int(DefaultRoutingMark.Load()),
+	}
+
+	for _, o := range DefaultOptions {
+		o(cfg)
+	}
+
+	for _, o := range options {
+		o(cfg)
+	}
+
+	lc := &net.ListenConfig{}
+	if cfg.interfaceName != "" {
+		addr, err := bindIfaceToListenConfig(cfg.interfaceName, lc, network, address)
 		if err != nil {
 			return nil, err
 		}
+		address = addr
+	}
+	if cfg.addrReuse {
+		addrReuseToListenConfig(lc)
+	}
+	if cfg.routingMark != 0 {
+		bindMarkToListenConfig(cfg.routingMark, lc, network, address)
+	}
 
-	if ListenPacketHook != nil && address == "" {
-		ip, err := ListenPacketHook()
-		if err != nil {
+	return lc.ListenPacket(ctx, network, address)
+}
+
+func dialContext(ctx context.Context, network string, destination net.IP, port string, options []Option) (net.Conn, error) {
+	opt := &option{
+		interfaceName: DefaultInterface.Load(),
+		routingMark:   int(DefaultRoutingMark.Load()),
+	}
+
+	for _, o := range DefaultOptions {
+		o(opt)
+	}
+
+	for _, o := range options {
+		o(opt)
+	}
+
+	dialer := &net.Dialer{}
+	if opt.interfaceName != "" {
+		if err := bindIfaceToDialer(opt.interfaceName, dialer, network, destination); err != nil {
 			return nil, err
 		}
-		address = net.JoinHostPort(ip.String(), "0")
 	}
-	return lc.ListenPacket(context.Background(), network, address)
+	if opt.routingMark != 0 {
+		bindMarkToDialer(opt.routingMark, dialer, network, destination)
 	}
 
-func dualStackDailContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return dialer.DialContext(ctx, network, net.JoinHostPort(destination.String(), port))
+}
+
+func dualStackDialContext(ctx context.Context, network, address string, options []Option) (net.Conn, error) {
 	host, port, err := net.SplitHostPort(address)
 	if err != nil {
 		return nil, err
@@ -119,12 +125,6 @@ func dualStackDailContext(ctx context.Context, network, address string) (net.Con
 			}
 		}()
 
-		dialer, err := Dialer()
-		if err != nil {
-			result.error = err
-			return
-		}
-
 		var ip net.IP
 		if ipv6 {
 			ip, result.error = resolver.ResolveIPv6(host)
@@ -136,20 +136,13 @@ func dualStackDailContext(ctx context.Context, network, address string) (net.Con
 		}
 		result.resolved = true
 
-		if DialHook != nil {
-			if result.error = DialHook(dialer, network, ip); result.error != nil {
-				return
-			}
-		}
-		result.Conn, result.error = dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), port))
+		result.Conn, result.error = dialContext(ctx, network, ip, port, options)
 	}
 
 	go startRacer(ctx, network+"4", host, false)
 	go startRacer(ctx, network+"6", host, true)
 
-	for {
-		select {
-		case res := <-results:
+	for res := range results {
 		if res.error == nil {
 			return res.Conn, nil
 		}
@@ -170,5 +163,6 @@ func dualStackDailContext(ctx context.Context, network, address string) (net.Con
 			}
 		}
 	}
-	}
+
+	return nil, errors.New("never touched")
 }

component/dialer/hook.go

@@ -1,148 +0,0 @@
-package dialer
-
-import (
-	"errors"
-	"net"
-	"time"
-
-	"github.com/Dreamacro/clash/common/singledo"
-)
-
-type DialerHookFunc = func(dialer *net.Dialer) error
-type DialHookFunc = func(dialer *net.Dialer, network string, ip net.IP) error
-type ListenConfigHookFunc = func(*net.ListenConfig) error
-type ListenPacketHookFunc = func() (net.IP, error)
-
-var (
-	DialerHook       DialerHookFunc
-	DialHook         DialHookFunc
-	ListenConfigHook ListenConfigHookFunc
-	ListenPacketHook ListenPacketHookFunc
-)
-
-var (
-	ErrAddrNotFound      = errors.New("addr not found")
-	ErrNetworkNotSupport = errors.New("network not support")
-)
-
-func lookupTCPAddr(ip net.IP, addrs []net.Addr) (*net.TCPAddr, error) {
-	ipv4 := ip.To4() != nil
-
-	for _, elm := range addrs {
-		addr, ok := elm.(*net.IPNet)
-		if !ok {
-			continue
-		}
-
-		addrV4 := addr.IP.To4() != nil
-
-		if addrV4 && ipv4 {
-			return &net.TCPAddr{IP: addr.IP, Port: 0}, nil
-		} else if !addrV4 && !ipv4 {
-			return &net.TCPAddr{IP: addr.IP, Port: 0}, nil
-		}
-	}
-
-	return nil, ErrAddrNotFound
-}
-
-func lookupUDPAddr(ip net.IP, addrs []net.Addr) (*net.UDPAddr, error) {
-	ipv4 := ip.To4() != nil
-
-	for _, elm := range addrs {
-		addr, ok := elm.(*net.IPNet)
-		if !ok {
-			continue
-		}
-
-		addrV4 := addr.IP.To4() != nil
-
-		if addrV4 && ipv4 {
-			return &net.UDPAddr{IP: addr.IP, Port: 0}, nil
-		} else if !addrV4 && !ipv4 {
-			return &net.UDPAddr{IP: addr.IP, Port: 0}, nil
-		}
-	}
-
-	return nil, ErrAddrNotFound
-}
-
-func ListenPacketWithInterface(name string) ListenPacketHookFunc {
-	single := singledo.NewSingle(5 * time.Second)
-
-	return func() (net.IP, error) {
-		elm, err, _ := single.Do(func() (interface{}, error) {
-			iface, err := net.InterfaceByName(name)
-			if err != nil {
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return nil, err
-		}
-
-		addrs := elm.([]net.Addr)
-
-		for _, elm := range addrs {
-			addr, ok := elm.(*net.IPNet)
-			if !ok || addr.IP.To4() == nil {
-				continue
-			}
-
-			return addr.IP, nil
-		}
-
-		return nil, ErrAddrNotFound
-	}
-}
-
-func DialerWithInterface(name string) DialHookFunc {
-	single := singledo.NewSingle(5 * time.Second)
-
-	return func(dialer *net.Dialer, network string, ip net.IP) error {
-		elm, err, _ := single.Do(func() (interface{}, error) {
-			iface, err := net.InterfaceByName(name)
-			if err != nil {
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return err
-		}
-
-		addrs := elm.([]net.Addr)
-
-		switch network {
-		case "tcp", "tcp4", "tcp6":
-			if addr, err := lookupTCPAddr(ip, addrs); err == nil {
-				dialer.LocalAddr = addr
-			} else {
-				return err
-			}
-		case "udp", "udp4", "udp6":
-			if addr, err := lookupUDPAddr(ip, addrs); err == nil {
-				dialer.LocalAddr = addr
-			} else {
-				return err
-			}
-		}
-
-		return nil
-	}
-}

component/dialer/mark_linux.go

@@ -0,0 +1,43 @@
+//go:build linux
+
+package dialer
+
+import (
+	"net"
+	"syscall"
+)
+
+func bindMarkToDialer(mark int, dialer *net.Dialer, _ string, _ net.IP) {
+	dialer.Control = bindMarkToControl(mark, dialer.Control)
+}
+
+func bindMarkToListenConfig(mark int, lc *net.ListenConfig, _, address string) {
+	lc.Control = bindMarkToControl(mark, lc.Control)
+}
+
+func bindMarkToControl(mark int, chain controlFn) controlFn {
+	return func(network, address string, c syscall.RawConn) (err error) {
+		defer func() {
+			if err == nil && chain != nil {
+				err = chain(network, address, c)
+			}
+		}()
+
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return
+			}
+		}
+
+		var innerErr error
+		err = c.Control(func(fd uintptr) {
+			innerErr = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, mark)
+		})
+		if innerErr != nil {
+			err = innerErr
+		}
+		return
+	}
+}

component/dialer/mark_nonlinux.go

@@ -0,0 +1,26 @@
+//go:build !linux
+
+package dialer
+
+import (
+	"net"
+	"sync"
+
+	"github.com/Dreamacro/clash/log"
+)
+
+var printMarkWarnOnce sync.Once
+
+func printMarkWarn() {
+	printMarkWarnOnce.Do(func() {
+		log.Warnln("Routing mark on socket is not supported on current platform")
+	})
+}
+
+func bindMarkToDialer(mark int, dialer *net.Dialer, _ string, _ net.IP) {
+	printMarkWarn()
+}
+
+func bindMarkToListenConfig(mark int, lc *net.ListenConfig, _, address string) {
+	printMarkWarn()
+}

component/dialer/options.go

@@ -0,0 +1,35 @@
+package dialer
+
+import "go.uber.org/atomic"
+
+var (
+	DefaultOptions     []Option
+	DefaultInterface   = atomic.NewString("")
+	DefaultRoutingMark = atomic.NewInt32(0)
+)
+
+type option struct {
+	interfaceName string
+	addrReuse     bool
+	routingMark   int
+}
+
+type Option func(opt *option)
+
+func WithInterface(name string) Option {
+	return func(opt *option) {
+		opt.interfaceName = name
+	}
+}
+
+func WithAddrReuse(reuse bool) Option {
+	return func(opt *option) {
+		opt.addrReuse = reuse
+	}
+}
+
+func WithRoutingMark(mark int) Option {
+	return func(opt *option) {
+		opt.routingMark = mark
+	}
+}

component/dialer/reuse_others.go

@@ -0,0 +1,9 @@
+//go:build !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows
+
+package dialer
+
+import (
+	"net"
+)
+
+func addrReuseToListenConfig(*net.ListenConfig) {}

component/dialer/reuse_unix.go

@@ -0,0 +1,27 @@
+//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+
+package dialer
+
+import (
+	"net"
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+func addrReuseToListenConfig(lc *net.ListenConfig) {
+	chain := lc.Control
+
+	lc.Control = func(network, address string, c syscall.RawConn) (err error) {
+		defer func() {
+			if err == nil && chain != nil {
+				err = chain(network, address, c)
+			}
+		}()
+
+		return c.Control(func(fd uintptr) {
+			unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)
+			unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
+		})
+	}
+}