Chore: update dependencies

Co-authored-by: ShinyGwyn <79344143+ShinyGwyn@users.noreply.github.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,100 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: "[Bug]"
-labels: ''
-assignees: ''
-
----
-
-<!--
-感谢你向 Clash Core 提交 issue！
-在提交之前，请确认：
-
-- [ ] 如果你可以自己 debug 并解决的话，提交 PR 吧！
-- [ ] 我已经在 [Issue Tracker](……/) 中找过我要提出的问题
-- [ ] 我已经使用 dev 分支版本测试过，问题依旧存在
-- [ ] 我已经仔细看过 [Documentation](https://github.com/Dreamacro/clash/wiki/) 并无法自行解决问题
-- [ ] 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
-
-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 opening 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.
-- [ ] I have searched on the [issue tracker](……/) for a related issue.
-- [ ] I have tested using the dev branch, and the issue still exists.
-- [ ] I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) and was unable to solve the issue
-- [ ] This is an issue of the Clash core *per se*, not to the derivatives of Clash, like OpenClash or KoolClash
-
-Please understand that we close issues that fail to follow this issue template.
--->
-
-------------------------------------------------------------------
-
-<!-- 
-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 config
-<!--
-在下方附上 Clash core 脱敏后配置文件的内容
-Paste the Clash core configuration below.
--->
-<details>
-  <summary>config.yaml</summary>
-
-```yaml
-……
-```
-
-</details>
-
-### Clash log
-<!--
-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`.
--->
-```
-……
-```
-
-### 环境 Environment
-
-* 操作系统 (the OS that the Clash core is running on)
-……
-* 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 (any other information that would be useful)
-……
-
-### 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] -->
-
-**实际上发生了什么？**
-<!-- **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/docker.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Get all docker tags
         if: startsWith(github.ref, 'refs/tags/')
-        uses: actions/github-script@v3
+        uses: actions/github-script@v4
         id: tags
         with:
           script: |

.github/workflows/go.yml

@@ -9,7 +9,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.16
+          go-version: 1.17
 
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
@@ -39,8 +39,6 @@ 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

.github/workflows/stale.yml

@@ -11,9 +11,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/stale@v3
+      - uses: actions/stale@v4
         with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
           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

Makefile

@@ -28,6 +28,7 @@ PLATFORM_LIST = \
 WINDOWS_ARCH_LIST = \
 	windows-386 \
 	windows-amd64 \
+	windows-arm64 \
 	windows-arm32v7
 
 all: linux-amd64 darwin-amd64 windows-amd64 # Most used
@@ -91,7 +92,10 @@ windows-386:
 
 windows-amd64:
 	GOARCH=amd64 GOOS=windows $(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
 

adapter/adapter.go

@@ -136,6 +136,8 @@ 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

adapter/outbound/direct.go

@@ -14,9 +14,7 @@ type Direct struct {
 
 // DialContext implements C.ProxyAdapter
 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)
+	c, err := dialer.DialContext(ctx, "tcp", metadata.RemoteAddress())
 	if err != nil {
 		return nil, err
 	}
@@ -26,7 +24,7 @@ func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 
 // DialUDP implements C.ProxyAdapter
 func (d *Direct) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := dialer.ListenPacket("udp", "")
+	pc, err := dialer.ListenPacket(context.Background(), "udp", "")
 	if err != nil {
 		return nil, err
 	}

adapter/outbound/shadowsocks.go

@@ -89,7 +89,7 @@ func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata) (_
 
 // DialUDP implements C.ProxyAdapter
 func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := dialer.ListenPacket("udp", "")
+	pc, err := dialer.ListenPacket(context.Background(), "udp", "")
 	if err != nil {
 		return nil, err
 	}

adapter/outbound/shadowsocksr.go

@@ -74,7 +74,7 @@ func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *C.Metadata)
 
 // DialUDP implements C.ProxyAdapter
 func (ssr *ShadowSocksR) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := dialer.ListenPacket("udp", "")
+	pc, err := dialer.ListenPacket(context.Background(), "udp", "")
 	if err != nil {
 		return nil, err
 	}

adapter/outbound/socks5.go

@@ -110,7 +110,7 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		return
 	}
 
-	pc, err := dialer.ListenPacket("udp", "")
+	pc, err := dialer.ListenPacket(context.Background(), "udp", "")
 	if err != nil {
 		return
 	}

adapter/outbound/vmess.go

@@ -43,6 +43,7 @@ type VmessOption struct {
 	HTTPOpts       HTTPOptions       `proxy:"http-opts,omitempty"`
 	HTTP2Opts      HTTP2Options      `proxy:"h2-opts,omitempty"`
 	GrpcOpts       GrpcOptions       `proxy:"grpc-opts,omitempty"`
+	WSOpts         WSOptions         `proxy:"ws-opts,omitempty"`
 	WSPath         string            `proxy:"ws-path,omitempty"`
 	WSHeaders      map[string]string `proxy:"ws-headers,omitempty"`
 	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
@@ -64,19 +65,35 @@ 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.WSPath,
+		if v.option.WSOpts.Path == "" {
+			v.option.WSOpts.Path = v.option.WSPath
+		}
+		if len(v.option.WSOpts.Headers) == 0 {
+			v.option.WSOpts.Headers = v.option.WSHeaders
 		}
 
-		if len(v.option.WSHeaders) != 0 {
+		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.WSHeaders {
 				header.Add(key, value)

adapter/outboundgroup/common.go

@@ -3,8 +3,8 @@ package outboundgroup
 import (
 	"time"
 
-	"github.com/Dreamacro/clash/adapter/provider"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 )
 
 const (

adapter/outboundgroup/fallback.go

@@ -5,9 +5,9 @@ import (
 	"encoding/json"
 
 	"github.com/Dreamacro/clash/adapter/outbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 )
 
 type Fallback struct {

adapter/outboundgroup/loadbalance.go

@@ -8,10 +8,10 @@ import (
 	"net"
 
 	"github.com/Dreamacro/clash/adapter/outbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/murmur3"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 
 	"golang.org/x/net/publicsuffix"
 )

adapter/outboundgroup/parser.go

@@ -7,6 +7,7 @@ import (
 	"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 (
@@ -28,7 +29,7 @@ type GroupCommonOption struct {
 	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]interface{}, proxyMap map[string]C.Proxy, providersMap map[string]types.ProxyProvider) (C.ProxyAdapter, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "group", WeaklyTypedInput: true})
 
 	groupOption := &GroupCommonOption{
@@ -44,7 +45,7 @@ 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
@@ -138,15 +139,15 @@ 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/adapter/outbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"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 {
@@ -21,10 +20,20 @@ type Relay struct {
 
 // DialContext implements C.ProxyAdapter
 func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxies := r.proxies(metadata, true)
-	if len(proxies) == 0 {
-		return nil, errors.New("proxy does not exist")
+	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)
+	case 1:
+		return proxies[0].DialContext(ctx, metadata)
+	}
+
 	first := proxies[0]
 	last := proxies[len(proxies)-1]
 

adapter/outboundgroup/selector.go

@@ -6,9 +6,9 @@ import (
 	"errors"
 
 	"github.com/Dreamacro/clash/adapter/outbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 )
 
 type Selector struct {

adapter/outboundgroup/urltest.go

@@ -6,9 +6,9 @@ import (
 	"time"
 
 	"github.com/Dreamacro/clash/adapter/outbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 )
 
 type urlTestOption func(*URLTest)

adapter/provider/fetcher.go

@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"time"
 
+	types "github.com/Dreamacro/clash/constant/provider"
 	"github.com/Dreamacro/clash/log"
 )
 
@@ -20,7 +21,7 @@ type parser = func([]byte) (interface{}, error)
 
 type fetcher struct {
 	name      string
-	vehicle   Vehicle
+	vehicle   types.Vehicle
 	updatedAt *time.Time
 	ticker    *time.Ticker
 	done      chan struct{}
@@ -33,7 +34,7 @@ func (f *fetcher) Name() string {
 	return f.name
 }
 
-func (f *fetcher) VehicleType() VehicleType {
+func (f *fetcher) VehicleType() types.VehicleType {
 	return f.vehicle.Type()
 }
 
@@ -76,7 +77,7 @@ func (f *fetcher) Initial() (interface{}, error) {
 		isLocal = false
 	}
 
-	if f.vehicle.Type() != File && !isLocal {
+	if f.vehicle.Type() != types.File && !isLocal {
 		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
 			return nil, err
 		}
@@ -110,7 +111,7 @@ func (f *fetcher) Update() (interface{}, bool, error) {
 		return nil, false, err
 	}
 
-	if f.vehicle.Type() != File {
+	if f.vehicle.Type() != types.File {
 		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
 			return nil, false, err
 		}
@@ -167,7 +168,7 @@ func safeWrite(path string, buf []byte) error {
 	return ioutil.WriteFile(path, buf, fileMode)
 }
 
-func newFetcher(name string, interval time.Duration, vehicle Vehicle, parser parser, onUpdate func(interface{})) *fetcher {
+func newFetcher(name string, interval time.Duration, vehicle types.Vehicle, parser parser, onUpdate func(interface{})) *fetcher {
 	var ticker *time.Ticker
 	if interval != 0 {
 		ticker = time.NewTicker(interval)

adapter/provider/healthcheck.go

@@ -2,9 +2,9 @@ package provider
 
 import (
 	"context"
-	"sync"
 	"time"
 
+	"github.com/Dreamacro/clash/common/batch"
 	C "github.com/Dreamacro/clash/constant"
 
 	"go.uber.org/atomic"
@@ -59,20 +59,17 @@ func (hc *HealthCheck) touch() {
 }
 
 func (hc *HealthCheck) check() {
-	ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
-	wg := &sync.WaitGroup{}
-
+	b, _ := batch.New(context.Background(), batch.WithConcurrencyNum(10))
 	for _, proxy := range hc.proxies {
-		wg.Add(1)
-
-		go func(p C.Proxy) {
+		p := proxy
+		b.Go(p.Name(), func() (interface{}, error) {
+			ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
+			defer cancel()
 			p.URLTest(ctx, hc.url)
-			wg.Done()
-		}(proxy)
+			return nil, nil
+		})
 	}
-
-	wg.Wait()
-	cancel()
+	b.Wait()
 }
 
 func (hc *HealthCheck) close() {

adapter/provider/parser.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/Dreamacro/clash/common/structure"
 	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
 )
 
 var (
@@ -28,7 +29,7 @@ type proxyProviderSchema struct {
 	HealthCheck healthCheckSchema `provider:"health-check,omitempty"`
 }
 
-func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvider, error) {
+func ParseProxyProvider(name string, mapping map[string]interface{}) (types.ProxyProvider, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "provider", WeaklyTypedInput: true})
 
 	schema := &proxyProviderSchema{
@@ -48,7 +49,7 @@ func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvi
 
 	path := C.Path.Resolve(schema.Path)
 
-	var vehicle Vehicle
+	var vehicle types.Vehicle
 	switch schema.Type {
 	case "file":
 		vehicle = NewFileVehicle(path)

adapter/provider/provider.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/Dreamacro/clash/adapter"
 	C "github.com/Dreamacro/clash/constant"
+	types "github.com/Dreamacro/clash/constant/provider"
 
 	"gopkg.in/yaml.v2"
 )
@@ -17,45 +18,6 @@ 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
-	// ProxiesWithTouch is used to inform the provider that the proxy is actually being used while getting the list of proxies.
-	// Commonly used in Dial and DialUDP
-	ProxiesWithTouch() []C.Proxy
-	HealthCheck()
-}
-
 type ProxySchema struct {
 	Proxies []map[string]interface{} `yaml:"proxies"`
 }
@@ -107,8 +69,8 @@ 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 {
@@ -160,7 +122,7 @@ func stopProxyProvider(pd *ProxySetProvider) {
 	pd.fetcher.Destroy()
 }
 
-func NewProxySetProvider(name string, interval time.Duration, vehicle Vehicle, hc *HealthCheck) *ProxySetProvider {
+func NewProxySetProvider(name string, interval time.Duration, vehicle types.Vehicle, hc *HealthCheck) *ProxySetProvider {
 	if hc.auto() {
 		go hc.process()
 	}
@@ -219,12 +181,12 @@ 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 {
@@ -242,7 +204,7 @@ func stopCompatibleProvider(pd *CompatibleProvider) {
 
 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

@@ -3,48 +3,21 @@ package provider
 import (
 	"context"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"net/url"
 	"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 {
@@ -64,8 +37,8 @@ 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 +72,9 @@ 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}

common/batch/batch.go

@@ -0,0 +1,105 @@
+package batch
+
+import (
+	"context"
+	"sync"
+)
+
+type Option = func(b *Batch)
+
+type Result struct {
+	Value interface{}
+	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() (interface{}, 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() (interface{}, error) {
+		time.Sleep(time.Millisecond * 100)
+		return "foo", nil
+	})
+	b.Go("bar", func() (interface{}, 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() (interface{}, 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() (interface{}, error) {
+		time.Sleep(time.Millisecond * 100)
+		return nil, errors.New("test error")
+	})
+
+	b.Go("ctx", func() (interface{}, 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/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 {

common/sockopt/reuseaddr_other.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package sockopt

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 +1,94 @@
+package dhcp
+
+import (
+	"context"
+	"errors"
+	"math/rand"
+	"net"
+
+	"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)
+
+	discovery, err := dhcpv4.NewDiscovery(randomHardware(), 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
+	}
+}
+
+func randomHardware() net.HardwareAddr {
+	addr := make(net.HardwareAddr, 6)
+
+	addr[0] = 0xff
+
+	for i := 1; i < len(addr); i++ {
+		addr[i] = byte(rand.Intn(254) + 1)
+	}
+
+	return addr
+}

component/dialer/bind.go

@@ -1,118 +0,0 @@
-package dialer
-
-import (
-	"errors"
-	"net"
-	"time"
-
-	"github.com/Dreamacro/clash/common/singledo"
-)
-
-// In some OS, such as Windows, it takes a little longer to get interface information
-var ifaceSingle = singledo.NewSingle(time.Second * 20)
-
-var (
-	errPlatformNotSupport = errors.New("unsupport platform")
-)
-
-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 fallbackBindToDialer(dialer *net.Dialer, network string, ip net.IP, name string) error {
-	if !ip.IsGlobalUnicast() {
-		return nil
-	}
-
-	iface, err, _ := ifaceSingle.Do(func() (interface{}, error) {
-		return net.InterfaceByName(name)
-	})
-	if err != nil {
-		return err
-	}
-
-	addrs, err := iface.(*net.Interface).Addrs()
-	if err != nil {
-		return err
-	}
-
-	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
-}
-
-func fallbackBindToListenConfig(name string) (string, error) {
-	iface, err, _ := ifaceSingle.Do(func() (interface{}, error) {
-		return net.InterfaceByName(name)
-	})
-	if err != nil {
-		return "", err
-	}
-
-	addrs, err := iface.(*net.Interface).Addrs()
-	if err != nil {
-		return "", err
-	}
-
-	for _, elm := range addrs {
-		addr, ok := elm.(*net.IPNet)
-		if !ok || addr.IP.To4() == nil {
-			continue
-		}
-
-		return net.JoinHostPort(addr.IP.String(), "0"), nil
-	}
-
-	return "", ErrAddrNotFound
-}

component/dialer/bind_darwin.go

@@ -3,51 +3,57 @@ package dialer
 import (
 	"net"
 	"syscall"
+
+	"golang.org/x/sys/unix"
+
+	"github.com/Dreamacro/clash/component/iface"
 )
 
 type controlFn = func(network, address string, c syscall.RawConn) error
 
-func bindControl(ifaceIdx int) controlFn {
-	return 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 nil
+				return
 			}
 		}
 
 		return c.Control(func(fd uintptr) {
 			switch network {
 			case "tcp4", "udp4":
-				syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_BOUND_IF, ifaceIdx)
+				unix.SetsockoptInt(int(fd), unix.IPPROTO_IP, unix.IP_BOUND_IF, ifaceIdx)
 			case "tcp6", "udp6":
-				syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IPV6, syscall.IPV6_BOUND_IF, ifaceIdx)
+				unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6, unix.IPV6_BOUND_IF, ifaceIdx)
 			}
 		})
 	}
 }
 
-func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
-	iface, err, _ := ifaceSingle.Do(func() (interface{}, error) {
-		return net.InterfaceByName(ifaceName)
-	})
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ net.IP) error {
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
 	if err != nil {
 		return err
 	}
 
-	dialer.Control = bindControl(iface.(*net.Interface).Index)
+	dialer.Control = bindControl(ifaceObj.Index, dialer.Control)
 	return nil
 }
 
-func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
-	iface, err, _ := ifaceSingle.Do(func() (interface{}, error) {
-		return net.InterfaceByName(ifaceName)
-	})
+func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string) (string, error) {
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
 	if err != nil {
-		return err
+		return "", err
 	}
 
-	lc.Control = bindControl(iface.(*net.Interface).Index)
-	return nil
+	lc.Control = bindControl(ifaceObj.Index, lc.Control)
+	return address, nil
 }

component/dialer/bind_linux.go

@@ -3,34 +3,42 @@ package dialer
 import (
 	"net"
 	"syscall"
+
+	"golang.org/x/sys/unix"
 )
 
 type controlFn = func(network, address string, c syscall.RawConn) error
 
-func bindControl(ifaceName string) controlFn {
-	return 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 nil
+				return
 			}
 		}
 
 		return c.Control(func(fd uintptr) {
-			syscall.BindToDevice(int(fd), ifaceName)
+			unix.BindToDevice(int(fd), ifaceName)
 		})
 	}
 }
 
-func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
-	dialer.Control = bindControl(ifaceName)
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ net.IP) error {
+	dialer.Control = bindControl(ifaceName, dialer.Control)
 
 	return nil
 }
 
-func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
-	lc.Control = bindControl(ifaceName)
+func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string) (string, error) {
+	lc.Control = bindControl(ifaceName, lc.Control)
 
-	return nil
+	return address, nil
 }

component/dialer/bind_others.go

@@ -1,13 +1,93 @@
+//go:build !linux && !darwin
 // +build !linux,!darwin
 
 package dialer
 
-import "net"
+import (
+	"net"
+	"strconv"
+	"strings"
 
-func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
-	return errPlatformNotSupport
+	"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 bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
-	return errPlatformNotSupport
+func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, network string, destination net.IP) error {
+	if !destination.IsGlobalUnicast() {
+		return nil
+	}
+
+	local := 0
+	if dialer.LocalAddr != nil {
+		_, port, err := net.SplitHostPort(dialer.LocalAddr.String())
+		if err == nil {
+			local, _ = strconv.Atoi(port)
+		}
+	}
+
+	addr, err := lookupLocalAddr(ifaceName, network, destination, 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.Atoi(port)
+
+	addr, err := lookupLocalAddr(ifaceName, network, nil, local)
+	if err != nil {
+		return "", err
+	}
+
+	return addr.String(), nil
 }

component/dialer/dialer.go

@@ -8,22 +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 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)
@@ -31,11 +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":
@@ -43,38 +23,70 @@ 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 dualStackDialContext(ctx, network, address)
+		return dualStackDialContext(ctx, network, address, options)
 	default:
 		return nil, errors.New("network invalid")
 	}
 }
 
-func ListenPacket(network, address string) (net.PacketConn, error) {
-	cfg := &net.ListenConfig{}
-	if ListenPacketHook != nil {
-		var err error
-		address, err = ListenPacketHook(cfg, address)
+func ListenPacket(ctx context.Context, network, address string, options ...Option) (net.PacketConn, error) {
+	cfg := &config{}
+
+	if !cfg.skipDefault {
+		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)
+	}
+
+	return lc.ListenPacket(ctx, network, address)
+}
+
+func dialContext(ctx context.Context, network string, destination net.IP, port string, options []Option) (net.Conn, error) {
+	opt := &config{}
+
+	if !opt.skipDefault {
+		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
+		}
 	}
 
-	return cfg.ListenPacket(context.Background(), network, address)
+	return dialer.DialContext(ctx, network, net.JoinHostPort(destination.String(), port))
 }
 
-func dualStackDialContext(ctx context.Context, network, address string) (net.Conn, error) {
+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
@@ -105,12 +117,6 @@ func dualStackDialContext(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)
@@ -122,12 +128,7 @@ func dualStackDialContext(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)

component/dialer/hook.go

@@ -1,43 +0,0 @@
-package dialer
-
-import (
-	"errors"
-	"net"
-)
-
-type DialerHookFunc = func(dialer *net.Dialer) error
-type DialHookFunc = func(dialer *net.Dialer, network string, ip net.IP) error
-type ListenPacketHookFunc = func(lc *net.ListenConfig, address string) (string, error)
-
-var (
-	DialerHook       DialerHookFunc
-	DialHook         DialHookFunc
-	ListenPacketHook ListenPacketHookFunc
-)
-
-var (
-	ErrAddrNotFound      = errors.New("addr not found")
-	ErrNetworkNotSupport = errors.New("network not support")
-)
-
-func ListenPacketWithInterface(name string) ListenPacketHookFunc {
-	return func(lc *net.ListenConfig, address string) (string, error) {
-		err := bindIfaceToListenConfig(lc, name)
-		if err == errPlatformNotSupport {
-			address, err = fallbackBindToListenConfig(name)
-		}
-
-		return address, err
-	}
-}
-
-func DialerWithInterface(name string) DialHookFunc {
-	return func(dialer *net.Dialer, network string, ip net.IP) error {
-		err := bindIfaceToDialer(dialer, name)
-		if err == errPlatformNotSupport {
-			err = fallbackBindToDialer(dialer, network, ip, name)
-		}
-
-		return err
-	}
-}

component/dialer/options.go

@@ -0,0 +1,31 @@
+package dialer
+
+var (
+	DefaultOptions []Option
+)
+
+type config struct {
+	skipDefault   bool
+	interfaceName string
+	addrReuse     bool
+}
+
+type Option func(opt *config)
+
+func WithInterface(name string) Option {
+	return func(opt *config) {
+		opt.interfaceName = name
+	}
+}
+
+func WithAddrReuse(reuse bool) Option {
+	return func(opt *config) {
+		opt.addrReuse = reuse
+	}
+}
+
+func WithSkipDefault(skip bool) Option {
+	return func(opt *config) {
+		opt.skipDefault = skip
+	}
+}

component/dialer/reuse_others.go

@@ -0,0 +1,10 @@
+//go:build !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows
+// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package dialer
+
+import (
+	"net"
+)
+
+func addrReuseToListenConfig(*net.ListenConfig) {}

component/dialer/reuse_unix.go

@@ -0,0 +1,28 @@
+//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+// +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)
+		})
+	}
+}

component/dialer/reuse_windows.go

@@ -0,0 +1,24 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+
+	"golang.org/x/sys/windows"
+)
+
+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) {
+			windows.SetsockoptInt(windows.Handle(fd), windows.SOL_SOCKET, windows.SO_REUSEADDR, 1)
+		})
+	}
+}

component/iface/iface.go

@@ -0,0 +1,113 @@
+package iface
+
+import (
+	"errors"
+	"net"
+	"time"
+
+	"github.com/Dreamacro/clash/common/singledo"
+)
+
+type Interface struct {
+	Index        int
+	Name         string
+	Addrs        []*net.IPNet
+	HardwareAddr net.HardwareAddr
+}
+
+var ErrIfaceNotFound = errors.New("interface not found")
+var ErrAddrNotFound = errors.New("addr not found")
+
+var interfaces = singledo.NewSingle(time.Second * 20)
+
+func ResolveInterface(name string) (*Interface, error) {
+	value, err, _ := interfaces.Do(func() (interface{}, error) {
+		ifaces, err := net.Interfaces()
+		if err != nil {
+			return nil, err
+		}
+
+		r := map[string]*Interface{}
+
+		for _, iface := range ifaces {
+			addrs, err := iface.Addrs()
+			if err != nil {
+				continue
+			}
+
+			ipNets := make([]*net.IPNet, 0, len(addrs))
+			for _, addr := range addrs {
+				ipNet := addr.(*net.IPNet)
+				if v4 := ipNet.IP.To4(); v4 != nil {
+					ipNet.IP = v4
+				}
+
+				ipNets = append(ipNets, ipNet)
+			}
+
+			r[iface.Name] = &Interface{
+				Index:        iface.Index,
+				Name:         iface.Name,
+				Addrs:        ipNets,
+				HardwareAddr: iface.HardwareAddr,
+			}
+		}
+
+		return r, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	ifaces := value.(map[string]*Interface)
+	iface, ok := ifaces[name]
+	if !ok {
+		return nil, ErrIfaceNotFound
+	}
+
+	return iface, nil
+}
+
+func FlushCache() {
+	interfaces.Reset()
+}
+
+func (iface *Interface) PickIPv4Addr(destination net.IP) (*net.IPNet, error) {
+	return iface.pickIPAddr(destination, func(addr *net.IPNet) bool {
+		return addr.IP.To4() != nil
+	})
+}
+
+func (iface *Interface) PickIPv6Addr(destination net.IP) (*net.IPNet, error) {
+	return iface.pickIPAddr(destination, func(addr *net.IPNet) bool {
+		return addr.IP.To4() == nil
+	})
+}
+
+func (iface *Interface) pickIPAddr(destination net.IP, accept func(addr *net.IPNet) bool) (*net.IPNet, error) {
+	var fallback *net.IPNet
+
+	for _, addr := range iface.Addrs {
+		if !accept(addr) {
+			continue
+		}
+
+		if fallback == nil && !addr.IP.IsLinkLocalUnicast() {
+			fallback = addr
+
+			if destination == nil {
+				break
+			}
+		}
+
+		if destination != nil && addr.Contains(destination) {
+			return addr, nil
+		}
+	}
+
+	if fallback == nil {
+		return nil, ErrAddrNotFound
+	}
+
+	return fallback, nil
+}

component/process/process_linux.go

@@ -16,14 +16,14 @@ import (
 )
 
 // from https://github.com/vishvananda/netlink/blob/bca67dfc8220b44ef582c9da4e9172bf1c9ec973/nl/nl_linux.go#L52-L62
-func init() {
+var nativeEndian = func() binary.ByteOrder {
 	var x uint32 = 0x01020304
 	if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
-		nativeEndian = binary.BigEndian
-	} else {
-		nativeEndian = binary.LittleEndian
+		return binary.BigEndian
 	}
-}
+
+	return binary.LittleEndian
+}()
 
 type SocketResolver func(network string, ip net.IP, srcPort int) (inode, uid int, err error)
 type ProcessNameResolver func(inode, uid int) (name string, err error)
@@ -40,8 +40,6 @@ const (
 	pathProc                = "/proc"
 )
 
-var nativeEndian binary.ByteOrder = binary.LittleEndian
-
 func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
 	inode, uid, err := DefaultSocketResolver(network, ip, srcPort)
 	if err != nil {

component/process/process_other.go

@@ -1,4 +1,7 @@
-// +build !darwin,!linux,!windows
+//go:build !darwin && !linux && !windows && (!freebsd || !amd64)
+// +build !darwin
+// +build !linux
+// +build !windows
 // +build !freebsd !amd64
 
 package process

config/config.go

@@ -16,6 +16,7 @@ import (
 	"github.com/Dreamacro/clash/component/fakeip"
 	"github.com/Dreamacro/clash/component/trie"
 	C "github.com/Dreamacro/clash/constant"
+	providerTypes "github.com/Dreamacro/clash/constant/provider"
 	"github.com/Dreamacro/clash/dns"
 	"github.com/Dreamacro/clash/log"
 	R "github.com/Dreamacro/clash/rule"
@@ -70,9 +71,10 @@ type DNS struct {
 
 // FallbackFilter config
 type FallbackFilter struct {
-	GeoIP  bool         `yaml:"geoip"`
-	IPCIDR []*net.IPNet `yaml:"ipcidr"`
-	Domain []string     `yaml:"domain"`
+	GeoIP     bool         `yaml:"geoip"`
+	GeoIPCode string       `yaml:"geoip-code"`
+	IPCIDR    []*net.IPNet `yaml:"ipcidr"`
+	Domain    []string     `yaml:"domain"`
 }
 
 // Profile config
@@ -93,7 +95,7 @@ type Config struct {
 	Rules        []C.Rule
 	Users        []auth.AuthUser
 	Proxies      map[string]C.Proxy
-	Providers    map[string]provider.ProxyProvider
+	Providers    map[string]providerTypes.ProxyProvider
 }
 
 type RawDNS struct {
@@ -112,9 +114,10 @@ type RawDNS struct {
 }
 
 type RawFallbackFilter struct {
-	GeoIP  bool     `yaml:"geoip"`
-	IPCIDR []string `yaml:"ipcidr"`
-	Domain []string `yaml:"domain"`
+	GeoIP     bool     `yaml:"geoip"`
+	GeoIPCode string   `yaml:"geoip-code"`
+	IPCIDR    []string `yaml:"ipcidr"`
+	Domain    []string `yaml:"domain"`
 }
 
 type RawConfig struct {
@@ -171,8 +174,9 @@ func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
 			UseHosts:    true,
 			FakeIPRange: "198.18.0.1/16",
 			FallbackFilter: RawFallbackFilter{
-				GeoIP:  true,
-				IPCIDR: []string{},
+				GeoIP:     true,
+				GeoIPCode: "CN",
+				IPCIDR:    []string{},
 			},
 			DefaultNameserver: []string{
 				"114.114.114.114",
@@ -267,9 +271,9 @@ func parseGeneral(cfg *RawConfig) (*General, error) {
 	}, nil
 }
 
-func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[string]provider.ProxyProvider, err error) {
+func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[string]providerTypes.ProxyProvider, err error) {
 	proxies = make(map[string]C.Proxy)
-	providersMap = make(map[string]provider.ProxyProvider)
+	providersMap = make(map[string]providerTypes.ProxyProvider)
 	proxyList := []string{}
 	proxiesConfig := cfg.Proxy
 	groupsConfig := cfg.ProxyGroup
@@ -345,7 +349,7 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 
 	// initial compatible provider
 	for _, pd := range providersMap {
-		if pd.VehicleType() != provider.Compatible {
+		if pd.VehicleType() != providerTypes.Compatible {
 			continue
 		}
 
@@ -367,7 +371,7 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 		&outboundgroup.GroupCommonOption{
 			Name: "GLOBAL",
 		},
-		[]provider.ProxyProvider{pd},
+		[]providerTypes.ProxyProvider{pd},
 	)
 	proxies["GLOBAL"] = adapter.NewProxy(global)
 	return proxies, providersMap, nil
@@ -484,6 +488,9 @@ func parseNameServer(servers []string) ([]dns.NameServer, error) {
 			clearURL := url.URL{Scheme: "https", Host: u.Host, Path: u.Path}
 			addr = clearURL.String()
 			dnsNetType = "https" // DNS over HTTPS
+		case "dhcp":
+			addr = u.Host
+			dnsNetType = "dhcp" // UDP from DHCP
 		default:
 			return nil, fmt.Errorf("DNS NameServer[%d] unsupport scheme: %s", idx, u.Scheme)
 		}
@@ -599,6 +606,7 @@ func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 	}
 
 	dnsCfg.FallbackFilter.GeoIP = cfg.FallbackFilter.GeoIP
+	dnsCfg.FallbackFilter.GeoIPCode = cfg.FallbackFilter.GeoIPCode
 	if fallbackip, err := parseFallbackIPCIDR(cfg.FallbackFilter.IPCIDR); err == nil {
 		dnsCfg.FallbackFilter.IPCIDR = fallbackip
 	}

constant/listener.go

@@ -0,0 +1,7 @@
+package constant
+
+type Listener interface {
+	RawAddress() string
+	Address() string
+	Close() error
+}

constant/metadata.go

@@ -17,7 +17,8 @@ const (
 
 	HTTP Type = iota
 	HTTPCONNECT
-	SOCKS
+	SOCKS4
+	SOCKS5
 	REDIR
 	TPROXY
 )
@@ -43,7 +44,9 @@ func (t Type) String() string {
 		return "HTTP"
 	case HTTPCONNECT:
 		return "HTTP Connect"
-	case SOCKS:
+	case SOCKS4:
+		return "Socks4"
+	case SOCKS5:
 		return "Socks5"
 	case REDIR:
 		return "Redir"

constant/path.go

@@ -9,21 +9,19 @@ import (
 const Name = "clash"
 
 // Path is used to get the configuration path
-var Path *path
-
-type path struct {
-	homeDir    string
-	configFile string
-}
-
-func init() {
+var Path = func() *path {
 	homeDir, err := os.UserHomeDir()
 	if err != nil {
 		homeDir, _ = os.Getwd()
 	}
 
 	homeDir = P.Join(homeDir, ".config", Name)
-	Path = &path{homeDir: homeDir, configFile: "config.yaml"}
+	return &path{homeDir: homeDir, configFile: "config.yaml"}
+}()
+
+type path struct {
+	homeDir    string
+	configFile string
 }
 
 // SetHomeDir is used to set the configuration path

constant/provider/interface.go

@@ -0,0 +1,105 @@
+package provider
+
+import (
+	"github.com/Dreamacro/clash/constant"
+)
+
+// 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
+}
+
+// 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() []constant.Proxy
+	// ProxiesWithTouch is used to inform the provider that the proxy is actually being used while getting the list of proxies.
+	// Commonly used in Dial and DialUDP
+	ProxiesWithTouch() []constant.Proxy
+	HealthCheck()
+}
+
+// Rule Type
+const (
+	Domain RuleType = iota
+	IPCIDR
+	Classical
+)
+
+// RuleType defined
+type RuleType int
+
+func (rt RuleType) String() string {
+	switch rt {
+	case Domain:
+		return "Domain"
+	case IPCIDR:
+		return "IPCIDR"
+	case Classical:
+		return "Classical"
+	default:
+		return "Unknown"
+	}
+}
+
+// RuleProvider interface
+type RuleProvider interface {
+	Provider
+	Behavior() RuleType
+	Match(*constant.Metadata) bool
+	ShouldResolveIP() bool
+	AsRule(adaptor string) constant.Rule
+}

dns/client.go

@@ -2,6 +2,7 @@ package dns
 
 import (
 	"context"
+	"crypto/tls"
 	"fmt"
 	"net"
 	"strings"
@@ -34,22 +35,16 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err
 		}
 	}
 
-	d, err := dialer.Dialer()
+	network := "udp"
+	if strings.HasPrefix(c.Client.Net, "tcp") {
+		network = "tcp"
+	}
+
+	conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), c.port))
 	if err != nil {
 		return nil, err
 	}
-
-	if ip != nil && ip.IsGlobalUnicast() && dialer.DialHook != nil {
-		network := "udp"
-		if strings.HasPrefix(c.Client.Net, "tcp") {
-			network = "tcp"
-		}
-		if err := dialer.DialHook(d, network, ip); err != nil {
-			return nil, err
-		}
-	}
-
-	c.Client.Dialer = d
+	defer conn.Close()
 
 	// miekg/dns ExchangeContext doesn't respond to context cancel.
 	// this is a workaround
@@ -59,7 +54,17 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err
 	}
 	ch := make(chan result, 1)
 	go func() {
-		msg, _, err := c.Client.Exchange(m, net.JoinHostPort(ip.String(), c.port))
+		if strings.HasSuffix(c.Client.Net, "tls") {
+			conn = tls.Client(conn, c.Client.TLSConfig)
+		}
+
+		msg, _, err = c.Client.ExchangeWithConn(m, &D.Conn{
+			Conn:         conn,
+			UDPSize:      c.Client.UDPSize,
+			TsigSecret:   c.Client.TsigSecret,
+			TsigProvider: c.Client.TsigProvider,
+		})
+
 		ch <- result{msg, err}
 	}()
 

dns/dhcp.go

@@ -0,0 +1,144 @@
+package dns
+
+import (
+	"bytes"
+	"context"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/Dreamacro/clash/component/dhcp"
+	"github.com/Dreamacro/clash/component/iface"
+	"github.com/Dreamacro/clash/component/resolver"
+
+	D "github.com/miekg/dns"
+)
+
+const (
+	IfaceTTL    = time.Second * 20
+	DHCPTTL     = time.Hour
+	DHCPTimeout = time.Minute
+)
+
+type dhcpClient struct {
+	ifaceName string
+
+	lock            sync.Mutex
+	ifaceInvalidate time.Time
+	dnsInvalidate   time.Time
+
+	ifaceAddr *net.IPNet
+	done      chan struct{}
+	resolver  *Resolver
+	err       error
+}
+
+func (d *dhcpClient) Exchange(m *D.Msg) (msg *D.Msg, err error) {
+	ctx, cancel := context.WithTimeout(context.Background(), resolver.DefaultDNSTimeout)
+	defer cancel()
+
+	return d.ExchangeContext(ctx, m)
+}
+
+func (d *dhcpClient) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
+	res, err := d.resolve(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return res.ExchangeContext(ctx, m)
+}
+
+func (d *dhcpClient) resolve(ctx context.Context) (*Resolver, error) {
+	d.lock.Lock()
+
+	invalidated, err := d.invalidate()
+	if err != nil {
+		d.err = err
+	} else if invalidated {
+		done := make(chan struct{})
+
+		d.done = done
+
+		go func() {
+			ctx, cancel := context.WithTimeout(context.Background(), DHCPTimeout)
+			defer cancel()
+
+			var res *Resolver
+			dns, err := dhcp.ResolveDNSFromDHCP(ctx, d.ifaceName)
+			if err == nil {
+				nameserver := make([]NameServer, 0, len(dns))
+				for _, d := range dns {
+					nameserver = append(nameserver, NameServer{Addr: net.JoinHostPort(d.String(), "53")})
+				}
+
+				res = NewResolver(Config{
+					Main: nameserver,
+				})
+			}
+
+			d.lock.Lock()
+			defer d.lock.Unlock()
+
+			close(done)
+
+			d.done = nil
+			d.resolver = res
+			d.err = err
+		}()
+	}
+
+	d.lock.Unlock()
+
+	for {
+		d.lock.Lock()
+
+		res, err, done := d.resolver, d.err, d.done
+
+		d.lock.Unlock()
+
+		// initializing
+		if res == nil && err == nil {
+			select {
+			case <-done:
+				continue
+			case <-ctx.Done():
+				return nil, ctx.Err()
+			}
+		}
+
+		// dirty return
+		return res, err
+	}
+}
+
+func (d *dhcpClient) invalidate() (bool, error) {
+	if time.Now().Before(d.ifaceInvalidate) {
+		return false, nil
+	}
+
+	d.ifaceInvalidate = time.Now().Add(IfaceTTL)
+
+	ifaceObj, err := iface.ResolveInterface(d.ifaceName)
+	if err != nil {
+		return false, err
+	}
+
+	addr, err := ifaceObj.PickIPv4Addr(nil)
+	if err != nil {
+		return false, err
+	}
+
+	if time.Now().Before(d.dnsInvalidate) && d.ifaceAddr.IP.Equal(addr.IP) && bytes.Equal(d.ifaceAddr.Mask, addr.Mask) {
+		return false, nil
+	}
+
+	d.dnsInvalidate = time.Now().Add(DHCPTTL)
+	d.ifaceAddr = addr
+
+	return d.done == nil, nil
+}
+
+func newDHCPClient(ifaceName string) *dhcpClient {
+	return &dhcpClient{ifaceName: ifaceName}
+}

dns/filters.go

@@ -2,6 +2,7 @@ package dns
 
 import (
 	"net"
+	"strings"
 
 	"github.com/Dreamacro/clash/component/mmdb"
 	"github.com/Dreamacro/clash/component/trie"
@@ -11,11 +12,13 @@ type fallbackIPFilter interface {
 	Match(net.IP) bool
 }
 
-type geoipFilter struct{}
+type geoipFilter struct {
+	code string
+}
 
 func (gf *geoipFilter) Match(ip net.IP) bool {
 	record, _ := mmdb.Instance().Country(ip)
-	return record.Country.IsoCode != "CN" && record.Country.IsoCode != ""
+	return !strings.EqualFold(record.Country.IsoCode, gf.code) && !ip.IsPrivate()
 }
 
 type ipnetFilter struct {

dns/resolver.go

@@ -87,6 +87,11 @@ func (r *Resolver) shouldIPFallback(ip net.IP) bool {
 
 // Exchange a batch of dns request, and it use cache
 func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error) {
+	return r.ExchangeContext(context.Background(), m)
+}
+
+// ExchangeContext a batch of dns request with context.Context, and it use cache
+func (r *Resolver) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
 	if len(m.Question) == 0 {
 		return nil, errors.New("should have one question at least")
 	}
@@ -98,17 +103,17 @@ func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error) {
 		msg = cache.(*D.Msg).Copy()
 		if expireTime.Before(now) {
 			setMsgTTL(msg, uint32(1)) // Continue fetch
-			go r.exchangeWithoutCache(m)
+			go r.exchangeWithoutCache(ctx, m)
 		} else {
 			setMsgTTL(msg, uint32(time.Until(expireTime).Seconds()))
 		}
 		return
 	}
-	return r.exchangeWithoutCache(m)
+	return r.exchangeWithoutCache(ctx, m)
 }
 
 // ExchangeWithoutCache a batch of dns request, and it do NOT GET from cache
-func (r *Resolver) exchangeWithoutCache(m *D.Msg) (msg *D.Msg, err error) {
+func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
 	q := m.Question[0]
 
 	ret, err, shared := r.group.Do(q.String(), func() (result interface{}, err error) {
@@ -124,13 +129,13 @@ func (r *Resolver) exchangeWithoutCache(m *D.Msg) (msg *D.Msg, err error) {
 
 		isIPReq := isIPRequest(q)
 		if isIPReq {
-			return r.ipExchange(m)
+			return r.ipExchange(ctx, m)
 		}
 
 		if matched := r.matchPolicy(m); len(matched) != 0 {
-			return r.batchExchange(matched, m)
+			return r.batchExchange(ctx, matched, m)
 		}
-		return r.batchExchange(r.main, m)
+		return r.batchExchange(ctx, r.main, m)
 	})
 
 	if err == nil {
@@ -143,8 +148,8 @@ func (r *Resolver) exchangeWithoutCache(m *D.Msg) (msg *D.Msg, err error) {
 	return
 }
 
-func (r *Resolver) batchExchange(clients []dnsClient, m *D.Msg) (msg *D.Msg, err error) {
-	fast, ctx := picker.WithTimeout(context.Background(), resolver.DefaultDNSTimeout)
+func (r *Resolver) batchExchange(ctx context.Context, clients []dnsClient, m *D.Msg) (msg *D.Msg, err error) {
+	fast, ctx := picker.WithTimeout(ctx, resolver.DefaultDNSTimeout)
 	for _, client := range clients {
 		r := client
 		fast.Go(func() (interface{}, error) {
@@ -209,21 +214,21 @@ func (r *Resolver) shouldOnlyQueryFallback(m *D.Msg) bool {
 	return false
 }
 
-func (r *Resolver) ipExchange(m *D.Msg) (msg *D.Msg, err error) {
+func (r *Resolver) ipExchange(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
 
 	if matched := r.matchPolicy(m); len(matched) != 0 {
-		res := <-r.asyncExchange(matched, m)
+		res := <-r.asyncExchange(ctx, matched, m)
 		return res.Msg, res.Error
 	}
 
 	onlyFallback := r.shouldOnlyQueryFallback(m)
 
 	if onlyFallback {
-		res := <-r.asyncExchange(r.fallback, m)
+		res := <-r.asyncExchange(ctx, r.fallback, m)
 		return res.Msg, res.Error
 	}
 
-	msgCh := r.asyncExchange(r.main, m)
+	msgCh := r.asyncExchange(ctx, r.main, m)
 
 	if r.fallback == nil { // directly return if no fallback servers are available
 		res := <-msgCh
@@ -231,7 +236,7 @@ func (r *Resolver) ipExchange(m *D.Msg) (msg *D.Msg, err error) {
 		return
 	}
 
-	fallbackMsg := r.asyncExchange(r.fallback, m)
+	fallbackMsg := r.asyncExchange(ctx, r.fallback, m)
 	res := <-msgCh
 	if res.Error == nil {
 		if ips := msgToIP(res.Msg); len(ips) != 0 {
@@ -287,10 +292,10 @@ func (r *Resolver) msgToDomain(msg *D.Msg) string {
 	return ""
 }
 
-func (r *Resolver) asyncExchange(client []dnsClient, msg *D.Msg) <-chan *result {
+func (r *Resolver) asyncExchange(ctx context.Context, client []dnsClient, msg *D.Msg) <-chan *result {
 	ch := make(chan *result, 1)
 	go func() {
-		res, err := r.batchExchange(client, msg)
+		res, err := r.batchExchange(ctx, client, msg)
 		ch <- &result{Msg: res, Error: err}
 	}()
 	return ch
@@ -302,9 +307,10 @@ type NameServer struct {
 }
 
 type FallbackFilter struct {
-	GeoIP  bool
-	IPCIDR []*net.IPNet
-	Domain []string
+	GeoIP     bool
+	GeoIPCode string
+	IPCIDR    []*net.IPNet
+	Domain    []string
 }
 
 type Config struct {
@@ -344,7 +350,9 @@ func NewResolver(config Config) *Resolver {
 
 	fallbackIPFilters := []fallbackIPFilter{}
 	if config.FallbackFilter.GeoIP {
-		fallbackIPFilters = append(fallbackIPFilters, &geoipFilter{})
+		fallbackIPFilters = append(fallbackIPFilters, &geoipFilter{
+			code: config.FallbackFilter.GeoIPCode,
+		})
 	}
 	for _, ipnet := range config.FallbackFilter.IPCIDR {
 		fallbackIPFilters = append(fallbackIPFilters, &ipnetFilter{ipnet: ipnet})

dns/util.go

@@ -117,9 +117,13 @@ func isIPRequest(q D.Question) bool {
 func transform(servers []NameServer, resolver *Resolver) []dnsClient {
 	ret := []dnsClient{}
 	for _, s := range servers {
-		if s.Net == "https" {
+		switch s.Net {
+		case "https":
 			ret = append(ret, newDoHClient(s.Addr, resolver))
 			continue
+		case "dhcp":
+			ret = append(ret, newDHCPClient(s.Addr))
+			continue
 		}
 
 		host, port, _ := net.SplitHostPort(s.Addr)

go.mod

@@ -1,22 +1,32 @@
 module github.com/Dreamacro/clash
 
-go 1.16
+go 1.17
 
 require (
 	github.com/Dreamacro/go-shadowsocks2 v0.1.7
-	github.com/go-chi/chi/v5 v5.0.3
+	github.com/go-chi/chi/v5 v5.0.4
 	github.com/go-chi/cors v1.2.0
 	github.com/go-chi/render v1.0.1
 	github.com/gofrs/uuid v4.0.0+incompatible
 	github.com/gorilla/websocket v1.4.2
+	github.com/insomniacslk/dhcp v0.0.0-20210827173440-b95caade3eac
 	github.com/miekg/dns v1.1.43
 	github.com/oschwald/geoip2-golang v1.5.0
 	github.com/sirupsen/logrus v1.8.1
 	github.com/stretchr/testify v1.7.0
-	go.uber.org/atomic v1.8.0
-	golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e
-	golang.org/x/net v0.0.0-20210614182718-04defd469f4e
+	go.uber.org/atomic v1.9.0
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
+	golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c
+	golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/oschwald/maxminddb-golang v1.8.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/u-root/uio v0.0.0-20210528114334-82958018845c // indirect
+	golang.org/x/text v0.3.6 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+)

go.sum

@@ -3,16 +3,38 @@ github.com/Dreamacro/go-shadowsocks2 v0.1.7/go.mod h1:8p5G4cAj5ZlXwUR+Ww63gfSikr
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-chi/chi/v5 v5.0.3 h1:khYQBdPivkYG1s1TAzDQG1f6eX4kD2TItYVZexL5rS4=
-github.com/go-chi/chi/v5 v5.0.3/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/fanliao/go-promise v0.0.0-20141029170127-1890db352a72/go.mod h1:PjfxuH4FZdUyfMdtBio2lsRr1AKEaVPwelzuHuh8Lqc=
+github.com/go-chi/chi/v5 v5.0.4 h1:5e494iHzsYBiyXQAHHuI4tyJS9M3V84OuX3ufIIGHFo=
+github.com/go-chi/chi/v5 v5.0.4/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/go-chi/cors v1.2.0 h1:tV1g1XENQ8ku4Bq3K9ub2AtgG+p16SmzeMSGTwrOKdE=
 github.com/go-chi/cors v1.2.0/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
 github.com/go-chi/render v1.0.1 h1:4/5tis2cKaNdnv9zFLfXzcquC9HbeZgCnxGnKrltBS8=
 github.com/go-chi/render v1.0.1/go.mod h1:pq4Rr7HbnsdaeHagklXub+p6Wd16Af5l9koip1OvJns=
 github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
 github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/hugelgupf/socketpair v0.0.0-20190730060125-05d35a94e714/go.mod h1:2Goc3h8EklBH5mspfHFxBnEoURQCGzQQH1ga9Myjvis=
+github.com/insomniacslk/dhcp v0.0.0-20210827173440-b95caade3eac h1:IO6EfdRnPhxgKOsk9DbewdtQZHKZKnGlW7QCUttvNys=
+github.com/insomniacslk/dhcp v0.0.0-20210827173440-b95caade3eac/go.mod h1:h+MxyHxRg9NH3terB1nfRIUaQEcI0XOVkdR9LNBlp8E=
+github.com/jsimonetti/rtnetlink v0.0.0-20190606172950-9527aa82566a/go.mod h1:Oz+70psSo5OFh8DBl0Zv2ACw7Esh6pPUphlvZG9x7uw=
+github.com/jsimonetti/rtnetlink v0.0.0-20200117123717-f846d4f6c1f4/go.mod h1:WGuG/smIU4J/54PblvSbh+xvCZmpJnFgr3ds6Z55XMQ=
+github.com/jsimonetti/rtnetlink v0.0.0-20201009170750-9c6f07d100c1/go.mod h1:hqoO/u39cqLeBLebZ8fWdE96O7FxrAsRYhnVOdgHxok=
+github.com/jsimonetti/rtnetlink v0.0.0-20201110080708-d2c240429e6c/go.mod h1:huN4d1phzjhlOsNIjFsw2SVRbwIHj3fJDMEU2SDPTmg=
+github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
+github.com/mdlayher/ethernet v0.0.0-20190606142754-0394541c37b7/go.mod h1:U6ZQobyTjI/tJyq2HG+i/dfSoFUt8/aZCM+GKtmFk/Y=
+github.com/mdlayher/netlink v0.0.0-20190409211403-11939a169225/go.mod h1:eQB3mZE4aiYnlUsyGGCOpPETfdQq4Jhsgf1fk3cwQaA=
+github.com/mdlayher/netlink v1.0.0/go.mod h1:KxeJAFOFLG6AjpyDkQ/iIhxygIUKD+vcwqcnu43w/+M=
+github.com/mdlayher/netlink v1.1.0/go.mod h1:H4WCitaheIsdF9yOYu8CFmCgQthAPIWZmcKp9uZHgmY=
+github.com/mdlayher/netlink v1.1.1/go.mod h1:WTYpFb/WTvlRJAyKhZL5/uy69TDDpHHu2VZmb2XgV7o=
+github.com/mdlayher/raw v0.0.0-20190606142536-fef19f00fc18/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
+github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg=
 github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4=
 github.com/oschwald/geoip2-golang v1.5.0 h1:igg2yQIrrcRccB1ytFXqBfOHCjXWIoMv85lVJ1ONZzw=
@@ -23,35 +45,66 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
 github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
+github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
+github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-go.uber.org/atomic v1.8.0 h1:CUhrE4N1rqSE6FM9ecihEjRkLQu8cDfgDyoOs83mEY4=
-go.uber.org/atomic v1.8.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+github.com/u-root/uio v0.0.0-20210528114334-82958018845c h1:BFvcl34IGnw8yvJi8hlqLFo9EshRInwWBs2M5fGWzQA=
+github.com/u-root/uio v0.0.0-20210528114334-82958018845c/go.mod h1:LpEX5FO/cB+WF4TYGY1V5qktpaZLkKkSegbr0V4eYXA=
+go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
+go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210317152858-513c2a44f670/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e h1:gsTQYXdTw2Gq7RBsWvlQ91b+aEQ6bXFUngBGuR8sPpI=
-golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
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 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
-golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=

hub/executor/executor.go

@@ -8,15 +8,16 @@ import (
 
 	"github.com/Dreamacro/clash/adapter"
 	"github.com/Dreamacro/clash/adapter/outboundgroup"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/component/auth"
 	"github.com/Dreamacro/clash/component/dialer"
+	"github.com/Dreamacro/clash/component/iface"
 	"github.com/Dreamacro/clash/component/profile"
 	"github.com/Dreamacro/clash/component/profile/cachefile"
 	"github.com/Dreamacro/clash/component/resolver"
 	"github.com/Dreamacro/clash/component/trie"
 	"github.com/Dreamacro/clash/config"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 	"github.com/Dreamacro/clash/dns"
 	P "github.com/Dreamacro/clash/listener"
 	authStore "github.com/Dreamacro/clash/listener/auth"
@@ -70,13 +71,13 @@ func ApplyConfig(cfg *config.Config, force bool) {
 	defer mux.Unlock()
 
 	updateUsers(cfg.Users)
-	updateGeneral(cfg.General, force)
 	updateProxies(cfg.Proxies, cfg.Providers)
 	updateRules(cfg.Rules)
-	updateDNS(cfg.DNS)
 	updateHosts(cfg.Hosts)
-	updateExperimental(cfg)
 	updateProfile(cfg)
+	updateGeneral(cfg.General, force)
+	updateDNS(cfg.DNS)
+	updateExperimental(cfg)
 }
 
 func GetGeneral() *config.General {
@@ -123,9 +124,10 @@ func updateDNS(c *config.DNS) {
 		Pool:         c.FakeIPRange,
 		Hosts:        c.Hosts,
 		FallbackFilter: dns.FallbackFilter{
-			GeoIP:  c.FallbackFilter.GeoIP,
-			IPCIDR: c.FallbackFilter.IPCIDR,
-			Domain: c.FallbackFilter.Domain,
+			GeoIP:     c.FallbackFilter.GeoIP,
+			GeoIPCode: c.FallbackFilter.GeoIPCode,
+			IPCIDR:    c.FallbackFilter.IPCIDR,
+			Domain:    c.FallbackFilter.Domain,
 		},
 		Default: c.DefaultNameserver,
 		Policy:  c.NameServerPolicy,
@@ -170,13 +172,13 @@ func updateGeneral(general *config.General, force bool) {
 	resolver.DisableIPv6 = !general.IPv6
 
 	if general.Interface != "" {
-		dialer.DialHook = dialer.DialerWithInterface(general.Interface)
-		dialer.ListenPacketHook = dialer.ListenPacketWithInterface(general.Interface)
+		dialer.DefaultOptions = []dialer.Option{dialer.WithInterface(general.Interface)}
 	} else {
-		dialer.DialHook = nil
-		dialer.ListenPacketHook = nil
+		dialer.DefaultOptions = nil
 	}
 
+	iface.FlushCache()
+
 	if !force {
 		return
 	}
@@ -195,7 +197,7 @@ func updateGeneral(general *config.General, force bool) {
 	}
 
 	if err := P.ReCreateSocks(general.SocksPort, tcpIn, udpIn); err != nil {
-		log.Errorln("Start SOCKS5 server error: %s", err.Error())
+		log.Errorln("Start SOCKS server error: %s", err.Error())
 	}
 
 	if err := P.ReCreateRedir(general.RedirPort, tcpIn, udpIn); err != nil {
@@ -207,7 +209,7 @@ func updateGeneral(general *config.General, force bool) {
 	}
 
 	if err := P.ReCreateMixed(general.MixedPort, tcpIn, udpIn); err != nil {
-		log.Errorln("Start Mixed(http and socks5) server error: %s", err.Error())
+		log.Errorln("Start Mixed(http and socks) server error: %s", err.Error())
 	}
 }
 

hub/route/provider.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"net/http"
 
-	"github.com/Dreamacro/clash/adapter/provider"
+	"github.com/Dreamacro/clash/constant/provider"
 	"github.com/Dreamacro/clash/tunnel"
 
 	"github.com/go-chi/chi/v5"

hub/route/server.go

@@ -3,6 +3,7 @@ package route
 import (
 	"bytes"
 	"encoding/json"
+	"net"
 	"net/http"
 	"strings"
 	"time"
@@ -81,10 +82,15 @@ func Start(addr string, secret string) {
 		})
 	}
 
-	log.Infoln("RESTful API listening at: %s", addr)
-	err := http.ListenAndServe(addr, r)
+	l, err := net.Listen("tcp", addr)
 	if err != nil {
-		log.Errorln("External controller error: %s", err.Error())
+		log.Errorln("External controller listen error: %s", err)
+		return
+	}
+	serverAddr = l.Addr().String()
+	log.Infoln("RESTful API listening at: %s", serverAddr)
+	if err = http.Serve(l, r); err != nil {
+		log.Errorln("External controller serve error: %s", err)
 	}
 }
 

listener/http/hack.go

@@ -7,4 +7,4 @@ import (
 )
 
 //go:linkname ReadRequest net/http.readRequest
-func ReadRequest(b *bufio.Reader, deleteHostHeader bool) (req *http.Request, err error)
+func ReadRequest(b *bufio.Reader) (req *http.Request, err error)

listener/http/proxy.go

@@ -24,7 +24,7 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 	trusted := cache == nil // disable authenticate if cache is nil
 
 	for keepAlive {
-		request, err := ReadRequest(conn.Reader(), false)
+		request, err := ReadRequest(conn.Reader())
 		if err != nil {
 			break
 		}
@@ -45,6 +45,7 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 			if request.Method == http.MethodConnect {
 				resp = responseWith(200)
 				resp.Status = "Connection established"
+				resp.ContentLength = -1
 
 				if resp.Write(conn) != nil {
 					break // close connection

listener/http/server.go

@@ -10,10 +10,26 @@ import (
 
 type Listener struct {
 	listener net.Listener
-	address  string
+	addr     string
 	closed   bool
 }
 
+// RawAddress implements C.Listener
+func (l *Listener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *Listener) Address() string {
+	return l.listener.Addr().String()
+}
+
+// Close implements C.Listener
+func (l *Listener) Close() error {
+	l.closed = true
+	return l.listener.Close()
+}
+
 func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	return NewWithAuthenticate(addr, in, true)
 }
@@ -31,7 +47,7 @@ func NewWithAuthenticate(addr string, in chan<- C.ConnContext, authenticate bool
 
 	hl := &Listener{
 		listener: l,
-		address:  addr,
+		addr:     addr,
 	}
 	go func() {
 		for {
@@ -48,12 +64,3 @@ func NewWithAuthenticate(addr string, in chan<- C.ConnContext, authenticate bool
 
 	return hl, nil
 }
-
-func (l *Listener) Close() {
-	l.closed = true
-	l.listener.Close()
-}
-
-func (l *Listener) Address() string {
-	return l.address
-}

listener/listener.go

@@ -69,7 +69,7 @@ func ReCreateHTTP(port int, tcpIn chan<- C.ConnContext) error {
 	addr := genAddr(bindAddress, port, allowLan)
 
 	if httpListener != nil {
-		if httpListener.Address() == addr {
+		if httpListener.RawAddress() == addr {
 			return nil
 		}
 		httpListener.Close()
@@ -100,7 +100,7 @@ func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	shouldUDPIgnore := false
 
 	if socksListener != nil {
-		if socksListener.Address() != addr {
+		if socksListener.RawAddress() != addr {
 			socksListener.Close()
 			socksListener = nil
 		} else {
@@ -109,7 +109,7 @@ func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	}
 
 	if socksUDPListener != nil {
-		if socksUDPListener.Address() != addr {
+		if socksUDPListener.RawAddress() != addr {
 			socksUDPListener.Close()
 			socksUDPListener = nil
 		} else {
@@ -139,7 +139,7 @@ func ReCreateSocks(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	socksListener = tcpListener
 	socksUDPListener = udpListener
 
-	log.Infoln("SOCKS5 proxy listening at: %s", socksListener.Address())
+	log.Infoln("SOCKS proxy listening at: %s", socksListener.Address())
 	return nil
 }
 
@@ -150,7 +150,7 @@ func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	addr := genAddr(bindAddress, port, allowLan)
 
 	if redirListener != nil {
-		if redirListener.Address() == addr {
+		if redirListener.RawAddress() == addr {
 			return nil
 		}
 		redirListener.Close()
@@ -158,7 +158,7 @@ func ReCreateRedir(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	}
 
 	if redirUDPListener != nil {
-		if redirUDPListener.Address() == addr {
+		if redirUDPListener.RawAddress() == addr {
 			return nil
 		}
 		redirUDPListener.Close()
@@ -191,7 +191,7 @@ func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.
 	addr := genAddr(bindAddress, port, allowLan)
 
 	if tproxyListener != nil {
-		if tproxyListener.Address() == addr {
+		if tproxyListener.RawAddress() == addr {
 			return nil
 		}
 		tproxyListener.Close()
@@ -199,7 +199,7 @@ func ReCreateTProxy(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.
 	}
 
 	if tproxyUDPListener != nil {
-		if tproxyUDPListener.Address() == addr {
+		if tproxyUDPListener.RawAddress() == addr {
 			return nil
 		}
 		tproxyUDPListener.Close()
@@ -235,7 +235,7 @@ func ReCreateMixed(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 	shouldUDPIgnore := false
 
 	if mixedListener != nil {
-		if mixedListener.Address() != addr {
+		if mixedListener.RawAddress() != addr {
 			mixedListener.Close()
 			mixedListener = nil
 		} else {
@@ -243,7 +243,7 @@ func ReCreateMixed(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 		}
 	}
 	if mixedUDPLister != nil {
-		if mixedUDPLister.Address() != addr {
+		if mixedUDPLister.RawAddress() != addr {
 			mixedUDPLister.Close()
 			mixedUDPLister = nil
 		} else {
@@ -271,7 +271,7 @@ func ReCreateMixed(port int, tcpIn chan<- C.ConnContext, udpIn chan<- *inbound.P
 		return err
 	}
 
-	log.Infoln("Mixed(http+socks5) proxy listening at: %s", mixedListener.Address())
+	log.Infoln("Mixed(http+socks) proxy listening at: %s", mixedListener.Address())
 	return nil
 }
 

listener/mixed/mixed.go

@@ -9,14 +9,31 @@ import (
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/listener/http"
 	"github.com/Dreamacro/clash/listener/socks"
+	"github.com/Dreamacro/clash/transport/socks4"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 type Listener struct {
 	listener net.Listener
-	address  string
-	closed   bool
+	addr     string
 	cache    *cache.Cache
+	closed   bool
+}
+
+// RawAddress implements C.Listener
+func (l *Listener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *Listener) Address() string {
+	return l.listener.Addr().String()
+}
+
+// Close implements C.Listener
+func (l *Listener) Close() error {
+	l.closed = true
+	return l.listener.Close()
 }
 
 func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
@@ -25,7 +42,11 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 		return nil, err
 	}
 
-	ml := &Listener{l, addr, false, cache.New(30 * time.Second)}
+	ml := &Listener{
+		listener: l,
+		addr:     addr,
+		cache:    cache.New(30 * time.Second),
+	}
 	go func() {
 		for {
 			c, err := ml.listener.Accept()
@@ -42,15 +63,6 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	return ml, nil
 }
 
-func (l *Listener) Close() {
-	l.closed = true
-	l.listener.Close()
-}
-
-func (l *Listener) Address() string {
-	return l.address
-}
-
 func handleConn(conn net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 	bufConn := N.NewBufferedConn(conn)
 	head, err := bufConn.Peek(1)
@@ -58,10 +70,12 @@ func handleConn(conn net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 		return
 	}
 
-	if head[0] == socks5.Version {
-		socks.HandleSocks(bufConn, in)
-		return
+	switch head[0] {
+	case socks4.Version:
+		socks.HandleSocks4(bufConn, in)
+	case socks5.Version:
+		socks.HandleSocks5(bufConn, in)
+	default:
+		http.HandleConn(bufConn, in, cache)
 	}
-
-	http.HandleConn(bufConn, in, cache)
 }

listener/redir/tcp.go

@@ -9,16 +9,35 @@ import (
 
 type Listener struct {
 	listener net.Listener
-	address  string
+	addr     string
 	closed   bool
 }
 
+// RawAddress implements C.Listener
+func (l *Listener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *Listener) Address() string {
+	return l.listener.Addr().String()
+}
+
+// Close implements C.Listener
+func (l *Listener) Close() error {
+	l.closed = true
+	return l.listener.Close()
+}
+
 func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	l, err := net.Listen("tcp", addr)
 	if err != nil {
 		return nil, err
 	}
-	rl := &Listener{l, addr, false}
+	rl := &Listener{
+		listener: l,
+		addr:     addr,
+	}
 
 	go func() {
 		for {
@@ -36,15 +55,6 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	return rl, nil
 }
 
-func (l *Listener) Close() {
-	l.closed = true
-	l.listener.Close()
-}
-
-func (l *Listener) Address() string {
-	return l.address
-}
-
 func handleRedir(conn net.Conn, in chan<- C.ConnContext) {
 	target, err := parserPacket(conn)
 	if err != nil {

listener/redir/tcp_linux_other.go

@@ -1,3 +1,4 @@
+//go:build linux && !386
 // +build linux,!386
 
 package redir

listener/redir/tcp_other.go

@@ -1,3 +1,4 @@
+//go:build !darwin && !linux && !freebsd
 // +build !darwin,!linux,!freebsd
 
 package redir

listener/socks/tcp.go

@@ -6,24 +6,45 @@ import (
 	"net"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
+	N "github.com/Dreamacro/clash/common/net"
 	C "github.com/Dreamacro/clash/constant"
 	authStore "github.com/Dreamacro/clash/listener/auth"
+	"github.com/Dreamacro/clash/transport/socks4"
 	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 type Listener struct {
 	listener net.Listener
-	address  string
+	addr     string
 	closed   bool
 }
 
+// RawAddress implements C.Listener
+func (l *Listener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *Listener) Address() string {
+	return l.listener.Addr().String()
+}
+
+// Close implements C.Listener
+func (l *Listener) Close() error {
+	l.closed = true
+	return l.listener.Close()
+}
+
 func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	l, err := net.Listen("tcp", addr)
 	if err != nil {
 		return nil, err
 	}
 
-	sl := &Listener{l, addr, false}
+	sl := &Listener{
+		listener: l,
+		addr:     addr,
+	}
 	go func() {
 		for {
 			c, err := l.Accept()
@@ -33,23 +54,44 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 				}
 				continue
 			}
-			go HandleSocks(c, in)
+			go handleSocks(c, in)
 		}
 	}()
 
 	return sl, nil
 }
 
-func (l *Listener) Close() {
-	l.closed = true
-	l.listener.Close()
+func handleSocks(conn net.Conn, in chan<- C.ConnContext) {
+	bufConn := N.NewBufferedConn(conn)
+	head, err := bufConn.Peek(1)
+	if err != nil {
+		conn.Close()
+		return
+	}
+
+	switch head[0] {
+	case socks4.Version:
+		HandleSocks4(bufConn, in)
+	case socks5.Version:
+		HandleSocks5(bufConn, in)
+	default:
+		conn.Close()
+	}
 }
 
-func (l *Listener) Address() string {
-	return l.address
+func HandleSocks4(conn net.Conn, in chan<- C.ConnContext) {
+	addr, _, err := socks4.ServerHandshake(conn, authStore.Authenticator())
+	if err != nil {
+		conn.Close()
+		return
+	}
+	if c, ok := conn.(*net.TCPConn); ok {
+		c.SetKeepAlive(true)
+	}
+	in <- inbound.NewSocket(socks5.ParseAddr(addr), conn, C.SOCKS4)
 }
 
-func HandleSocks(conn net.Conn, in chan<- C.ConnContext) {
+func HandleSocks5(conn net.Conn, in chan<- C.ConnContext) {
 	target, command, err := socks5.ServerHandshake(conn, authStore.Authenticator())
 	if err != nil {
 		conn.Close()
@@ -63,5 +105,5 @@ func HandleSocks(conn net.Conn, in chan<- C.ConnContext) {
 		io.Copy(ioutil.Discard, conn)
 		return
 	}
-	in <- inbound.NewSocket(target, conn, C.SOCKS)
+	in <- inbound.NewSocket(target, conn, C.SOCKS5)
 }

listener/socks/udp.go

@@ -13,10 +13,26 @@ import (
 
 type UDPListener struct {
 	packetConn net.PacketConn
-	address    string
+	addr       string
 	closed     bool
 }
 
+// RawAddress implements C.Listener
+func (l *UDPListener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *UDPListener) Address() string {
+	return l.packetConn.LocalAddr().String()
+}
+
+// Close implements C.Listener
+func (l *UDPListener) Close() error {
+	l.closed = true
+	return l.packetConn.Close()
+}
+
 func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error) {
 	l, err := net.ListenPacket("udp", addr)
 	if err != nil {
@@ -27,7 +43,10 @@ func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error)
 		log.Warnln("Failed to Reuse UDP Address: %s", err)
 	}
 
-	sl := &UDPListener{l, addr, false}
+	sl := &UDPListener{
+		packetConn: l,
+		addr:       addr,
+	}
 	go func() {
 		for {
 			buf := pool.Get(pool.RelayBufferSize)
@@ -46,15 +65,6 @@ func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error)
 	return sl, nil
 }
 
-func (l *UDPListener) Close() error {
-	l.closed = true
-	return l.packetConn.Close()
-}
-
-func (l *UDPListener) Address() string {
-	return l.address
-}
-
 func handleSocksUDP(pc net.PacketConn, in chan<- *inbound.PacketAdapter, buf []byte, addr net.Addr) {
 	target, payload, err := socks5.DecodeUDPPacket(buf)
 	if err != nil {
@@ -69,7 +79,7 @@ func handleSocksUDP(pc net.PacketConn, in chan<- *inbound.PacketAdapter, buf []b
 		bufRef:  buf,
 	}
 	select {
-	case in <- inbound.NewPacket(target, packet, C.TPROXY):
+	case in <- inbound.NewPacket(target, packet, C.SOCKS5):
 	default:
 	}
 }

listener/tproxy/setsockopt_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package tproxy

listener/tproxy/setsockopt_other.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package tproxy

listener/tproxy/tproxy.go

@@ -10,10 +10,32 @@ import (
 
 type Listener struct {
 	listener net.Listener
-	address  string
+	addr     string
 	closed   bool
 }
 
+// RawAddress implements C.Listener
+func (l *Listener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *Listener) Address() string {
+	return l.listener.Addr().String()
+}
+
+// Close implements C.Listener
+func (l *Listener) Close() error {
+	l.closed = true
+	return l.listener.Close()
+}
+
+func (l *Listener) handleTProxy(conn net.Conn, in chan<- C.ConnContext) {
+	target := socks5.ParseAddrToSocksAddr(conn.LocalAddr())
+	conn.(*net.TCPConn).SetKeepAlive(true)
+	in <- inbound.NewSocket(target, conn, C.TPROXY)
+}
+
 func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 	l, err := net.Listen("tcp", addr)
 	if err != nil {
@@ -33,7 +55,7 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 
 	rl := &Listener{
 		listener: l,
-		address:  addr,
+		addr:     addr,
 	}
 
 	go func() {
@@ -51,18 +73,3 @@ func New(addr string, in chan<- C.ConnContext) (*Listener, error) {
 
 	return rl, nil
 }
-
-func (l *Listener) Close() {
-	l.closed = true
-	l.listener.Close()
-}
-
-func (l *Listener) Address() string {
-	return l.address
-}
-
-func (l *Listener) handleTProxy(conn net.Conn, in chan<- C.ConnContext) {
-	target := socks5.ParseAddrToSocksAddr(conn.LocalAddr())
-	conn.(*net.TCPConn).SetKeepAlive(true)
-	in <- inbound.NewSocket(target, conn, C.TPROXY)
-}

listener/tproxy/udp.go

@@ -11,17 +11,36 @@ import (
 
 type UDPListener struct {
 	packetConn net.PacketConn
-	address    string
+	addr       string
 	closed     bool
 }
 
+// RawAddress implements C.Listener
+func (l *UDPListener) RawAddress() string {
+	return l.addr
+}
+
+// Address implements C.Listener
+func (l *UDPListener) Address() string {
+	return l.packetConn.LocalAddr().String()
+}
+
+// Close implements C.Listener
+func (l *UDPListener) Close() error {
+	l.closed = true
+	return l.packetConn.Close()
+}
+
 func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error) {
 	l, err := net.ListenPacket("udp", addr)
 	if err != nil {
 		return nil, err
 	}
 
-	rl := &UDPListener{l, addr, false}
+	rl := &UDPListener{
+		packetConn: l,
+		addr:       addr,
+	}
 
 	c := l.(*net.UDPConn)
 
@@ -59,15 +78,6 @@ func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error)
 	return rl, nil
 }
 
-func (l *UDPListener) Close() error {
-	l.closed = true
-	return l.packetConn.Close()
-}
-
-func (l *UDPListener) Address() string {
-	return l.address
-}
-
 func handlePacketConn(pc net.PacketConn, in chan<- *inbound.PacketAdapter, buf []byte, lAddr *net.UDPAddr, rAddr *net.UDPAddr) {
 	target := socks5.ParseAddrToSocksAddr(rAddr)
 	pkt := &packet{

listener/tproxy/udp_linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package tproxy

listener/tproxy/udp_other.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package tproxy

rule/geoip.go

@@ -1,6 +1,8 @@
 package rules
 
 import (
+	"strings"
+
 	"github.com/Dreamacro/clash/component/mmdb"
 	C "github.com/Dreamacro/clash/constant"
 )
@@ -20,8 +22,12 @@ func (g *GEOIP) Match(metadata *C.Metadata) bool {
 	if ip == nil {
 		return false
 	}
+
+	if strings.EqualFold(g.country, "LAN") {
+		return ip.IsPrivate()
+	}
 	record, _ := mmdb.Instance().Country(ip)
-	return record.Country.IsoCode == g.country
+	return strings.EqualFold(record.Country.IsoCode, g.country)
 }
 
 func (g *GEOIP) Adapter() string {

test/README.md

@@ -47,3 +47,13 @@ Prerequisite
 ```
 $ go test -p 1 -v
 ```
+
+benchmark (Linux)
+
+> Cannot represent the throughput of the protocol on your machine
+> but you can compare the corresponding throughput of the protocol on clash
+> (change chunkSize to measure the maximum throughput of clash on your machine)
+
+```
+$ go test -benchmem -run=^$ -bench .
+```

test/clash_test.go

@@ -15,6 +15,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/Dreamacro/clash/adapter/outbound"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/hub/executor"
 	"github.com/Dreamacro/clash/transport/socks5"
@@ -26,11 +27,12 @@ import (
 )
 
 const (
-	ImageShadowsocks = "mritd/shadowsocks:latest"
-	ImageVmess       = "v2fly/v2fly-core:latest"
-	ImageTrojan      = "trojangfw/trojan:latest"
-	ImageSnell       = "icpz/snell-server:latest"
-	ImageXray        = "teddysun/xray:latest"
+	ImageShadowsocks     = "mritd/shadowsocks:latest"
+	ImageShadowsocksRust = "ghcr.io/shadowsocks/ssserver-rust:latest"
+	ImageVmess           = "v2fly/v2fly-core:latest"
+	ImageTrojan          = "trojangfw/trojan:latest"
+	ImageSnell           = "icpz/snell-server:latest"
+	ImageXray            = "teddysun/xray:latest"
 )
 
 var (
@@ -70,7 +72,7 @@ func init() {
 		}
 	}
 
-	c, err := client.NewClientWithOpts(client.FromEnv)
+	c, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
 	if err != nil {
 		panic(err)
 	}
@@ -208,10 +210,11 @@ func newLargeDataPair() (chan hashPair, chan hashPair, func(t *testing.T) error)
 func testPingPongWithSocksPort(t *testing.T, port int) {
 	pingCh, pongCh, test := newPingPongPair()
 	go func() {
-		l, err := net.Listen("tcp", ":10001")
+		l, err := Listen("tcp", ":10001")
 		if err != nil {
 			assert.FailNow(t, err.Error())
 		}
+		defer l.Close()
 
 		c, err := l.Accept()
 		if err != nil {
@@ -227,7 +230,6 @@ func testPingPongWithSocksPort(t *testing.T, port int) {
 		if _, err := c.Write([]byte("pong")); err != nil {
 			assert.FailNow(t, err.Error())
 		}
-		l.Close()
 	}()
 
 	go func() {
@@ -235,6 +237,7 @@ func testPingPongWithSocksPort(t *testing.T, port int) {
 		if err != nil {
 			assert.FailNow(t, err.Error())
 		}
+		defer c.Close()
 
 		if _, err := socks5.ClientHandshake(c, socks5.ParseAddr("127.0.0.1:10001"), socks5.CmdConnect, nil); err != nil {
 			assert.FailNow(t, err.Error())
@@ -250,14 +253,13 @@ func testPingPongWithSocksPort(t *testing.T, port int) {
 		}
 
 		pongCh <- buf
-		c.Close()
 	}()
 
 	test(t)
 }
 
 func testPingPongWithConn(t *testing.T, c net.Conn) error {
-	l, err := net.Listen("tcp", ":10001")
+	l, err := Listen("tcp", ":10001")
 	if err != nil {
 		return err
 	}
@@ -298,7 +300,7 @@ func testPingPongWithConn(t *testing.T, c net.Conn) error {
 }
 
 func testPingPongWithPacketConn(t *testing.T, pc net.PacketConn) error {
-	l, err := net.ListenPacket("udp", ":10001")
+	l, err := ListenPacket("udp", ":10001")
 	if err != nil {
 		return err
 	}
@@ -343,7 +345,7 @@ type hashPair struct {
 }
 
 func testLargeDataWithConn(t *testing.T, c net.Conn) error {
-	l, err := net.Listen("tcp", ":10001")
+	l, err := Listen("tcp", ":10001")
 	if err != nil {
 		return err
 	}
@@ -378,6 +380,7 @@ func testLargeDataWithConn(t *testing.T, c net.Conn) error {
 		if err != nil {
 			return
 		}
+		defer c.Close()
 
 		hashMap := map[int][]byte{}
 		buf := make([]byte, chunkSize)
@@ -436,7 +439,7 @@ func testLargeDataWithConn(t *testing.T, c net.Conn) error {
 }
 
 func testLargeDataWithPacketConn(t *testing.T, pc net.PacketConn) error {
-	l, err := net.ListenPacket("udp", ":10001")
+	l, err := ListenPacket("udp", ":10001")
 	if err != nil {
 		return err
 	}
@@ -619,6 +622,44 @@ func testSuit(t *testing.T, proxy C.ProxyAdapter) {
 	assert.NoError(t, testPacketConnTimeout(t, pc))
 }
 
+func benchmarkProxy(b *testing.B, proxy C.ProxyAdapter) {
+	l, err := Listen("tcp", ":10001")
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+	defer l.Close()
+
+	go func() {
+		c, err := l.Accept()
+		if err != nil {
+			assert.FailNow(b, err.Error())
+		}
+		defer c.Close()
+
+		io.Copy(io.Discard, c)
+	}()
+
+	chunkSize := int64(16 * 1024)
+	chunk := make([]byte, chunkSize)
+	rand.Read(chunk)
+	conn, err := proxy.DialContext(context.Background(), &C.Metadata{
+		Host:     localIP.String(),
+		DstPort:  "10001",
+		AddrType: socks5.AtypDomainName,
+	})
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	b.SetBytes(chunkSize)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := conn.Write(chunk); err != nil {
+			assert.FailNow(b, err.Error())
+		}
+	}
+}
+
 func TestClash_Basic(t *testing.T) {
 	basic := `
 mixed-port: 10000
@@ -633,3 +674,8 @@ log-level: silent
 	time.Sleep(waitTime)
 	testPingPongWithSocksPort(t, 10000)
 }
+
+func Benchmark_Direct(b *testing.B) {
+	proxy := outbound.NewDirect()
+	benchmarkProxy(b, proxy)
+}

test/config/vmess-grpc.json

@@ -24,7 +24,7 @@
                     ]
                 },
                 "grpcSettings": {
-                    "serviceName": "example"
+                    "serviceName": "example!"
                 }
             }
         }

test/config/vmess-ws-0rtt.json

@@ -0,0 +1,30 @@
+{
+    "inbounds": [
+        {
+            "port": 10002,
+            "listen": "0.0.0.0",
+            "protocol": "vmess",
+            "settings": {
+                "clients": [
+                    {
+                        "id": "b831381d-6324-4d53-ad4f-8cda48b30811",
+                        "alterId": 32
+                    }
+                ]
+            },
+            "streamSettings": {
+                "network": "ws",
+                "security": "none",
+                "wsSettings": {
+                    "maxEarlyData": 128,
+                    "earlyDataHeaderName": "Sec-WebSocket-Protocol"
+                }
+            }
+        }
+    ],
+    "outbounds": [
+        {
+            "protocol": "freedom"
+        }
+    ]
+}

test/docker_test.go

@@ -11,7 +11,7 @@ import (
 var isDarwin = false
 
 func startContainer(cfg *container.Config, hostCfg *container.HostConfig, name string) (string, error) {
-	c, err := client.NewClientWithOpts(client.FromEnv)
+	c, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
 	if err != nil {
 		return "", err
 	}
@@ -34,7 +34,7 @@ func startContainer(cfg *container.Config, hostCfg *container.HostConfig, name s
 }
 
 func cleanContainer(id string) error {
-	c, err := client.NewClientWithOpts(client.FromEnv)
+	c, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
 	if err != nil {
 		return err
 	}

test/go.mod

@@ -1,26 +1,50 @@
 module clash-test
 
-go 1.16
+go 1.17
 
 require (
-	github.com/Dreamacro/clash v1.6.1-0.20210516120541-06fdd3abe0ab
-	github.com/Microsoft/go-winio v0.4.16 // indirect
-	github.com/containerd/containerd v1.4.4 // indirect
-	github.com/docker/distribution v2.7.1+incompatible // indirect
-	github.com/docker/docker v20.10.6+incompatible
+	github.com/Dreamacro/clash v1.6.6-0.20210905062555-c7b718f6512d
+	github.com/docker/docker v20.10.8+incompatible
 	github.com/docker/go-connections v0.4.0
+	github.com/miekg/dns v1.1.43
+	github.com/stretchr/testify v1.7.0
+	golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f
+)
+
+replace github.com/Dreamacro/clash => ../
+
+require (
+	github.com/Dreamacro/go-shadowsocks2 v0.1.7 // indirect
+	github.com/Microsoft/go-winio v0.5.0 // indirect
+	github.com/containerd/containerd v1.5.5 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/distribution v2.7.1+incompatible // indirect
 	github.com/docker/go-units v0.4.0 // indirect
+	github.com/gofrs/uuid v4.0.0+incompatible // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/google/go-cmp v0.5.5 // indirect
+	github.com/golang/protobuf v1.5.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/miekg/dns v1.1.42
-	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/insomniacslk/dhcp v0.0.0-20210827173440-b95caade3eac // indirect
+	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
-	github.com/stretchr/testify v1.7.0
-	golang.org/x/net v0.0.0-20210510120150-4163338589ed
-	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba // indirect
-	google.golang.org/grpc v1.36.0 // indirect
-	gotest.tools/v3 v3.0.3 // indirect
+	github.com/oschwald/geoip2-golang v1.5.0 // indirect
+	github.com/oschwald/maxminddb-golang v1.8.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/sirupsen/logrus v1.8.1 // indirect
+	github.com/u-root/uio v0.0.0-20210528114334-82958018845c // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34 // indirect
+	golang.org/x/text v0.3.6 // indirect
+	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
+	google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a // indirect
+	google.golang.org/grpc v1.40.0 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )

test/snell_test.go

@@ -119,3 +119,40 @@ func TestClash_Snell(t *testing.T) {
 	time.Sleep(waitTime)
 	testSuit(t, proxy)
 }
+
+func Benchmark_Snell(b *testing.B) {
+	cfg := &container.Config{
+		Image:        ImageSnell,
+		ExposedPorts: defaultExposedPorts,
+		Cmd:          []string{"-c", "/config.conf"},
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds:        []string{fmt.Sprintf("%s:/config.conf", C.Path.Resolve("snell-http.conf"))},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "snell-http")
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	b.Cleanup(func() {
+		cleanContainer(id)
+	})
+
+	proxy, err := outbound.NewSnell(outbound.SnellOption{
+		Name:   "snell",
+		Server: localIP.String(),
+		Port:   10002,
+		Psk:    "password",
+		ObfsOpts: map[string]interface{}{
+			"mode": "http",
+		},
+	})
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	benchmarkProxy(b, proxy)
+}

test/ss_test.go

@@ -12,8 +12,9 @@ import (
 
 func TestClash_Shadowsocks(t *testing.T) {
 	cfg := &container.Config{
-		Image:        ImageShadowsocks,
-		Env:          []string{"SS_MODULE=ss-server", "SS_CONFIG=-s 0.0.0.0 -u -v -p 10002 -m chacha20-ietf-poly1305 -k FzcLbKs2dY9mhL"},
+		Image:        ImageShadowsocksRust,
+		Entrypoint:   []string{"ssserver"},
+		Cmd:          []string{"-s", "0.0.0.0:10002", "-m", "chacha20-ietf-poly1305", "-k", "FzcLbKs2dY9mhL", "-U"},
 		ExposedPorts: defaultExposedPorts,
 	}
 	hostCfg := &container.HostConfig{
@@ -170,3 +171,39 @@ func TestClash_ShadowsocksV2RayPlugin(t *testing.T) {
 	time.Sleep(waitTime)
 	testSuit(t, proxy)
 }
+
+func Benchmark_Shadowsocks(b *testing.B) {
+	cfg := &container.Config{
+		Image:        ImageShadowsocksRust,
+		Entrypoint:   []string{"ssserver"},
+		Cmd:          []string{"-s", "0.0.0.0:10002", "-m", "aes-256-gcm", "-k", "FzcLbKs2dY9mhL", "-U"},
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+	}
+
+	id, err := startContainer(cfg, hostCfg, "ss")
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	b.Cleanup(func() {
+		cleanContainer(id)
+	})
+
+	proxy, err := outbound.NewShadowSocks(outbound.ShadowSocksOption{
+		Name:     "ss",
+		Server:   localIP.String(),
+		Port:     10002,
+		Password: "FzcLbKs2dY9mhL",
+		Cipher:   "aes-256-gcm",
+		UDP:      true,
+	})
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	benchmarkProxy(b, proxy)
+}

test/trojan_test.go

@@ -92,3 +92,43 @@ func TestClash_TrojanGrpc(t *testing.T) {
 	time.Sleep(waitTime)
 	testSuit(t, proxy)
 }
+
+func Benchmark_Trojan(b *testing.B) {
+	cfg := &container.Config{
+		Image:        ImageTrojan,
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds: []string{
+			fmt.Sprintf("%s:/config/config.json", C.Path.Resolve("trojan.json")),
+			fmt.Sprintf("%s:/path/to/certificate.crt", C.Path.Resolve("example.org.pem")),
+			fmt.Sprintf("%s:/path/to/private.key", C.Path.Resolve("example.org-key.pem")),
+		},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "trojan")
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	b.Cleanup(func() {
+		cleanContainer(id)
+	})
+
+	proxy, err := outbound.NewTrojan(outbound.TrojanOption{
+		Name:           "trojan",
+		Server:         localIP.String(),
+		Port:           10002,
+		Password:       "password",
+		SNI:            "example.org",
+		SkipCertVerify: true,
+		UDP:            true,
+	})
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	benchmarkProxy(b, proxy)
+}

test/util.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"context"
+	"net"
+	"time"
+)
+
+func Listen(network, address string) (net.Listener, error) {
+	lc := net.ListenConfig{}
+
+	var lastErr error
+	for i := 0; i < 5; i++ {
+		l, err := lc.Listen(context.Background(), network, address)
+		if err == nil {
+			return l, nil
+		}
+
+		lastErr = err
+		time.Sleep(time.Millisecond * 200)
+	}
+	return nil, lastErr
+}
+
+func ListenPacket(network, address string) (net.PacketConn, error) {
+	var lastErr error
+	for i := 0; i < 5; i++ {
+		l, err := net.ListenPacket(network, address)
+		if err == nil {
+			return l, nil
+		}
+
+		lastErr = err
+		time.Sleep(time.Millisecond * 200)
+	}
+	return nil, lastErr
+}

test/util_other_test.go

@@ -0,0 +1,13 @@
+//go:build !darwin
+// +build !darwin
+
+package main
+
+import (
+	"errors"
+	"net"
+)
+
+func defaultRouteIP() (net.IP, error) {
+	return nil, errors.New("not supported")
+}

test/vmess_test.go

@@ -335,7 +335,7 @@ func TestClash_VmessGrpc(t *testing.T) {
 		UDP:            true,
 		ServerName:     "example.org",
 		GrpcOpts: outbound.GrpcOptions{
-			GrpcServiceName: "example",
+			GrpcServiceName: "example!",
 		},
 	})
 	if err != nil {
@@ -345,3 +345,122 @@ func TestClash_VmessGrpc(t *testing.T) {
 	time.Sleep(waitTime)
 	testSuit(t, proxy)
 }
+
+func TestClash_VmessWebsocket0RTT(t *testing.T) {
+	cfg := &container.Config{
+		Image:        ImageVmess,
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds: []string{
+			fmt.Sprintf("%s:/etc/v2ray/config.json", C.Path.Resolve("vmess-ws-0rtt.json")),
+		},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "vmess-ws-0rtt")
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+	defer cleanContainer(id)
+
+	proxy, err := outbound.NewVmess(outbound.VmessOption{
+		Name:       "vmess",
+		Server:     localIP.String(),
+		Port:       10002,
+		UUID:       "b831381d-6324-4d53-ad4f-8cda48b30811",
+		Cipher:     "auto",
+		AlterID:    32,
+		Network:    "ws",
+		UDP:        true,
+		ServerName: "example.org",
+		WSOpts: outbound.WSOptions{
+			MaxEarlyData:        2048,
+			EarlyDataHeaderName: "Sec-WebSocket-Protocol",
+		},
+	})
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	testSuit(t, proxy)
+}
+
+func TestClash_VmessWebsocketXray0RTT(t *testing.T) {
+	cfg := &container.Config{
+		Image:        ImageXray,
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds: []string{
+			fmt.Sprintf("%s:/etc/xray/config.json", C.Path.Resolve("vmess-ws-0rtt.json")),
+		},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "vmess-xray-ws-0rtt")
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+	defer cleanContainer(id)
+
+	proxy, err := outbound.NewVmess(outbound.VmessOption{
+		Name:       "vmess",
+		Server:     localIP.String(),
+		Port:       10002,
+		UUID:       "b831381d-6324-4d53-ad4f-8cda48b30811",
+		Cipher:     "auto",
+		AlterID:    32,
+		Network:    "ws",
+		UDP:        true,
+		ServerName: "example.org",
+		WSOpts: outbound.WSOptions{
+			Path: "/?ed=2048",
+		},
+	})
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	testSuit(t, proxy)
+}
+
+func Benchmark_Vmess(b *testing.B) {
+	configPath := C.Path.Resolve("vmess-aead.json")
+
+	cfg := &container.Config{
+		Image:        ImageVmess,
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds:        []string{fmt.Sprintf("%s:/etc/v2ray/config.json", configPath)},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "vmess-aead")
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	b.Cleanup(func() {
+		cleanContainer(id)
+	})
+
+	proxy, err := outbound.NewVmess(outbound.VmessOption{
+		Name:    "vmess",
+		Server:  localIP.String(),
+		Port:    10002,
+		UUID:    "b831381d-6324-4d53-ad4f-8cda48b30811",
+		Cipher:  "auto",
+		AlterID: 0,
+		UDP:     true,
+	})
+	if err != nil {
+		assert.FailNow(b, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	benchmarkProxy(b, proxy)
+}

transport/gun/gun.go

@@ -211,6 +211,8 @@ func StreamGunWithTransport(transport *http2.Transport, cfg *Config) (net.Conn,
 			Scheme: "https",
 			Host:   cfg.Host,
 			Path:   fmt.Sprintf("/%s/Tun", serviceName),
+			// for unescape path
+			Opaque: fmt.Sprintf("//%s/%s/Tun", cfg.Host, serviceName),
 		},
 		Proto:      "HTTP/2",
 		ProtoMajor: 2,

transport/socks4/socks4.go

@@ -0,0 +1,195 @@
+package socks4
+
+import (
+	"bytes"
+	"encoding/binary"
+	"errors"
+	"io"
+	"net"
+	"strconv"
+
+	"github.com/Dreamacro/clash/component/auth"
+)
+
+const Version = 0x04
+
+type Command = uint8
+
+const (
+	CmdConnect Command = 0x01
+	CmdBind    Command = 0x02
+)
+
+type Code = uint8
+
+const (
+	RequestGranted          Code = 90
+	RequestRejected         Code = 91
+	RequestIdentdFailed     Code = 92
+	RequestIdentdMismatched Code = 93
+)
+
+var (
+	errVersionMismatched   = errors.New("version code mismatched")
+	errCommandNotSupported = errors.New("command not supported")
+	errIPv6NotSupported    = errors.New("IPv6 not supported")
+
+	ErrRequestRejected         = errors.New("request rejected or failed")
+	ErrRequestIdentdFailed     = errors.New("request rejected because SOCKS server cannot connect to identd on the client")
+	ErrRequestIdentdMismatched = errors.New("request rejected because the client program and identd report different user-ids")
+	ErrRequestUnknownCode      = errors.New("request failed with unknown code")
+)
+
+func ServerHandshake(rw io.ReadWriter, authenticator auth.Authenticator) (addr string, command Command, err error) {
+	var req [8]byte
+	if _, err = io.ReadFull(rw, req[:]); err != nil {
+		return
+	}
+
+	if req[0] != Version {
+		err = errVersionMismatched
+		return
+	}
+
+	if command = req[1]; command != CmdConnect {
+		err = errCommandNotSupported
+		return
+	}
+
+	var (
+		dstIP   = req[4:8] // [4]byte
+		dstPort = req[2:4] // [2]byte
+	)
+
+	var (
+		host   string
+		port   string
+		code   uint8
+		userID []byte
+	)
+	if userID, err = readUntilNull(rw); err != nil {
+		return
+	}
+
+	if isReservedIP(dstIP) {
+		var target []byte
+		if target, err = readUntilNull(rw); err != nil {
+			return
+		}
+		host = string(target)
+	}
+
+	port = strconv.Itoa(int(binary.BigEndian.Uint16(dstPort)))
+	if host != "" {
+		addr = net.JoinHostPort(host, port)
+	} else {
+		addr = net.JoinHostPort(net.IP(dstIP).String(), port)
+	}
+
+	// SOCKS4 only support USERID auth.
+	if authenticator == nil || authenticator.Verify(string(userID), "") {
+		code = RequestGranted
+	} else {
+		code = RequestIdentdMismatched
+	}
+
+	var reply [8]byte
+	reply[0] = 0x00 // reply code
+	reply[1] = code // result code
+	copy(reply[4:8], dstIP)
+	copy(reply[2:4], dstPort)
+
+	_, err = rw.Write(reply[:])
+	return
+}
+
+func ClientHandshake(rw io.ReadWriter, addr string, command Command, userID string) (err error) {
+	host, portStr, err := net.SplitHostPort(addr)
+	if err != nil {
+		return err
+	}
+
+	port, err := strconv.ParseUint(portStr, 10, 16)
+	if err != nil {
+		return err
+	}
+
+	ip := net.ParseIP(host)
+	if ip == nil /* HOST */ {
+		ip = net.IPv4(0, 0, 0, 1).To4()
+	} else if ip.To4() == nil /* IPv6 */ {
+		return errIPv6NotSupported
+	}
+
+	dstIP := ip.To4()
+
+	req := &bytes.Buffer{}
+	req.WriteByte(Version)
+	req.WriteByte(command)
+	binary.Write(req, binary.BigEndian, uint16(port))
+	req.Write(dstIP)
+	req.WriteString(userID)
+	req.WriteByte(0) /* NULL */
+
+	if isReservedIP(dstIP) /* SOCKS4A */ {
+		req.WriteString(host)
+		req.WriteByte(0) /* NULL */
+	}
+
+	if _, err = rw.Write(req.Bytes()); err != nil {
+		return err
+	}
+
+	var resp [8]byte
+	if _, err = io.ReadFull(rw, resp[:]); err != nil {
+		return err
+	}
+
+	if resp[0] != 0x00 {
+		return errVersionMismatched
+	}
+
+	switch resp[1] {
+	case RequestGranted:
+		return nil
+	case RequestRejected:
+		return ErrRequestRejected
+	case RequestIdentdFailed:
+		return ErrRequestIdentdFailed
+	case RequestIdentdMismatched:
+		return ErrRequestIdentdMismatched
+	default:
+		return ErrRequestUnknownCode
+	}
+}
+
+// For version 4A, if the client cannot resolve the destination host's
+// domain name to find its IP address, it should set the first three bytes
+// of DSTIP to NULL and the last byte to a non-zero value. (This corresponds
+// to IP address 0.0.0.x, with x nonzero. As decreed by IANA  -- The
+// Internet Assigned Numbers Authority -- such an address is inadmissible
+// as a destination IP address and thus should never occur if the client
+// can resolve the domain name.)
+func isReservedIP(ip net.IP) bool {
+	subnet := net.IPNet{
+		IP:   net.IPv4zero,
+		Mask: net.IPv4Mask(0xff, 0xff, 0xff, 0x00),
+	}
+
+	return !ip.IsUnspecified() && subnet.Contains(ip)
+}
+
+func readUntilNull(r io.Reader) ([]byte, error) {
+	var buf = &bytes.Buffer{}
+	var data [1]byte
+
+	for {
+		if _, err := r.Read(data[:]); err != nil {
+			return nil, err
+		}
+		if data[0] == 0 {
+			return buf.Bytes(), nil
+		}
+		buf.WriteByte(data[0])
+	}
+}

transport/ssr/protocol/auth_aes128_sha1.go

@@ -152,7 +152,7 @@ func (a *authAES128) Encode(buf *bytes.Buffer, b []byte) error {
 }
 
 func (a *authAES128) DecodePacket(b []byte) ([]byte, error) {
-	if !bytes.Equal(a.hmac(a.Key, b[:len(b)-4])[:4], b[len(b)-4:]) {
+	if !bytes.Equal(a.hmac(a.userKey, b[:len(b)-4])[:4], b[len(b)-4:]) {
 		return nil, errAuthAES128ChksumError
 	}
 	return b[:len(b)-4], nil

transport/vmess/conn.go

@@ -59,12 +59,12 @@ func (vc *Conn) Read(b []byte) (int, error) {
 func (vc *Conn) sendRequest() error {
 	timestamp := time.Now()
 
+	mbuf := &bytes.Buffer{}
+
 	if !vc.isAead {
 		h := hmac.New(md5.New, vc.id.UUID.Bytes())
 		binary.Write(h, binary.BigEndian, uint64(timestamp.Unix()))
-		if _, err := vc.Conn.Write(h.Sum(nil)); err != nil {
-			return err
-		}
+		mbuf.Write(h.Sum(nil))
 	}
 
 	buf := &bytes.Buffer{}
@@ -110,7 +110,8 @@ func (vc *Conn) sendRequest() error {
 
 		stream := cipher.NewCFBEncrypter(block, hashTimestamp(timestamp))
 		stream.XORKeyStream(buf.Bytes(), buf.Bytes())
-		_, err = vc.Conn.Write(buf.Bytes())
+		mbuf.Write(buf.Bytes())
+		_, err = vc.Conn.Write(mbuf.Bytes())
 		return err
 	}
 

transport/vmess/websocket.go

@@ -1,12 +1,17 @@
 package vmess
 
 import (
+	"bytes"
+	"context"
 	"crypto/tls"
+	"encoding/base64"
+	"errors"
 	"fmt"
 	"io"
 	"net"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -23,15 +28,26 @@ type websocketConn struct {
 	rMux sync.Mutex
 	wMux sync.Mutex
 }
+type websocketWithEarlyDataConn struct {
+	net.Conn
+	underlay net.Conn
+	closed   bool
+	dialed   chan bool
+	cancel   context.CancelFunc
+	ctx      context.Context
+	config   *WebsocketConfig
+}
 
 type WebsocketConfig struct {
-	Host           string
-	Port           string
-	Path           string
-	Headers        http.Header
-	TLS            bool
-	SkipCertVerify bool
-	ServerName     string
+	Host                string
+	Port                string
+	Path                string
+	Headers             http.Header
+	TLS                 bool
+	SkipCertVerify      bool
+	ServerName          string
+	MaxEarlyData        int
+	EarlyDataHeaderName string
 }
 
 // Read implements net.Conn.Read()
@@ -113,7 +129,118 @@ func (wsc *websocketConn) SetWriteDeadline(t time.Time) error {
 	return wsc.conn.SetWriteDeadline(t)
 }
 
-func StreamWebsocketConn(conn net.Conn, c *WebsocketConfig) (net.Conn, error) {
+func (wsedc *websocketWithEarlyDataConn) Dial(earlyData []byte) error {
+	base64DataBuf := &bytes.Buffer{}
+	base64EarlyDataEncoder := base64.NewEncoder(base64.RawURLEncoding, base64DataBuf)
+
+	earlyDataBuf := bytes.NewBuffer(earlyData)
+	if _, err := base64EarlyDataEncoder.Write(earlyDataBuf.Next(wsedc.config.MaxEarlyData)); err != nil {
+		return errors.New("failed to encode early data: " + err.Error())
+	}
+
+	if errc := base64EarlyDataEncoder.Close(); errc != nil {
+		return errors.New("failed to encode early data tail: " + errc.Error())
+	}
+
+	var err error
+	if wsedc.Conn, err = streamWebsocketConn(wsedc.underlay, wsedc.config, base64DataBuf); err != nil {
+		wsedc.Close()
+		return errors.New("failed to dial WebSocket: " + err.Error())
+	}
+
+	wsedc.dialed <- true
+	if earlyDataBuf.Len() != 0 {
+		_, err = wsedc.Conn.Write(earlyDataBuf.Bytes())
+	}
+
+	return err
+}
+
+func (wsedc *websocketWithEarlyDataConn) Write(b []byte) (int, error) {
+	if wsedc.closed {
+		return 0, io.ErrClosedPipe
+	}
+	if wsedc.Conn == nil {
+		if err := wsedc.Dial(b); err != nil {
+			return 0, err
+		}
+		return len(b), nil
+	}
+
+	return wsedc.Conn.Write(b)
+}
+
+func (wsedc *websocketWithEarlyDataConn) Read(b []byte) (int, error) {
+	if wsedc.closed {
+		return 0, io.ErrClosedPipe
+	}
+	if wsedc.Conn == nil {
+		select {
+		case <-wsedc.ctx.Done():
+			return 0, io.ErrUnexpectedEOF
+		case <-wsedc.dialed:
+		}
+	}
+	return wsedc.Conn.Read(b)
+}
+
+func (wsedc *websocketWithEarlyDataConn) Close() error {
+	wsedc.closed = true
+	wsedc.cancel()
+	if wsedc.Conn == nil {
+		return nil
+	}
+	return wsedc.Conn.Close()
+}
+
+func (wsedc *websocketWithEarlyDataConn) LocalAddr() net.Addr {
+	if wsedc.Conn == nil {
+		return wsedc.underlay.LocalAddr()
+	}
+	return wsedc.Conn.LocalAddr()
+}
+
+func (wsedc *websocketWithEarlyDataConn) RemoteAddr() net.Addr {
+	if wsedc.Conn == nil {
+		return wsedc.underlay.RemoteAddr()
+	}
+	return wsedc.Conn.RemoteAddr()
+}
+
+func (wsedc *websocketWithEarlyDataConn) SetDeadline(t time.Time) error {
+	if err := wsedc.SetReadDeadline(t); err != nil {
+		return err
+	}
+	return wsedc.SetWriteDeadline(t)
+}
+
+func (wsedc *websocketWithEarlyDataConn) SetReadDeadline(t time.Time) error {
+	if wsedc.Conn == nil {
+		return nil
+	}
+	return wsedc.Conn.SetReadDeadline(t)
+}
+
+func (wsedc *websocketWithEarlyDataConn) SetWriteDeadline(t time.Time) error {
+	if wsedc.Conn == nil {
+		return nil
+	}
+	return wsedc.Conn.SetWriteDeadline(t)
+}
+
+func streamWebsocketWithEarlyDataConn(conn net.Conn, c *WebsocketConfig) (net.Conn, error) {
+	ctx, cancel := context.WithCancel(context.Background())
+	conn = &websocketWithEarlyDataConn{
+		dialed:   make(chan bool, 1),
+		cancel:   cancel,
+		ctx:      ctx,
+		underlay: conn,
+		config:   c,
+	}
+	return conn, nil
+}
+
+func streamWebsocketConn(conn net.Conn, c *WebsocketConfig, earlyData *bytes.Buffer) (net.Conn, error) {
 	dialer := &websocket.Dialer{
 		NetDial: func(network, addr string) (net.Conn, error) {
 			return conn, nil
@@ -152,6 +279,14 @@ func StreamWebsocketConn(conn net.Conn, c *WebsocketConfig) (net.Conn, error) {
 		}
 	}
 
+	if earlyData != nil {
+		if c.EarlyDataHeaderName == "" {
+			uri.Path += earlyData.String()
+		} else {
+			headers.Set(c.EarlyDataHeaderName, earlyData.String())
+		}
+	}
+
 	wsConn, resp, err := dialer.Dial(uri.String(), headers)
 	if err != nil {
 		reason := err.Error()
@@ -166,3 +301,23 @@ func StreamWebsocketConn(conn net.Conn, c *WebsocketConfig) (net.Conn, error) {
 		remoteAddr: conn.RemoteAddr(),
 	}, nil
 }
+
+func StreamWebsocketConn(conn net.Conn, c *WebsocketConfig) (net.Conn, error) {
+	if u, err := url.Parse(c.Path); err == nil {
+		if q := u.Query(); q.Get("ed") != "" {
+			if ed, err := strconv.Atoi(q.Get("ed")); err == nil {
+				c.MaxEarlyData = ed
+				c.EarlyDataHeaderName = "Sec-WebSocket-Protocol"
+				q.Del("ed")
+				u.RawQuery = q.Encode()
+				c.Path = u.String()
+			}
+		}
+	}
+
+	if c.MaxEarlyData > 0 {
+		return streamWebsocketWithEarlyDataConn(conn, c)
+	}
+
+	return streamWebsocketConn(conn, c, nil)
+}

tunnel/tunnel.go

@@ -8,10 +8,10 @@ import (
 	"time"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
-	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/component/nat"
 	"github.com/Dreamacro/clash/component/resolver"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/constant/provider"
 	"github.com/Dreamacro/clash/context"
 	"github.com/Dreamacro/clash/log"
 	"github.com/Dreamacro/clash/tunnel/statistic"
@@ -219,9 +219,9 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 		rawPc, err := proxy.DialUDP(metadata)
 		if err != nil {
 			if rule == nil {
-				log.Warnln("[UDP] dial %s to %s error: %s", proxy.Name(), metadata.String(), err.Error())
+				log.Warnln("[UDP] dial %s to %s error: %s", proxy.Name(), metadata.RemoteAddress(), err.Error())
 			} else {
-				log.Warnln("[UDP] dial %s (match %s/%s) to %s error: %s", proxy.Name(), rule.RuleType().String(), rule.Payload(), metadata.String(), err.Error())
+				log.Warnln("[UDP] dial %s (match %s/%s) to %s error: %s", proxy.Name(), rule.RuleType().String(), rule.Payload(), metadata.RemoteAddress(), err.Error())
 			}
 			return
 		}
@@ -230,13 +230,13 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 
 		switch true {
 		case rule != nil:
-			log.Infoln("[UDP] %s --> %v match %s(%s) using %s", metadata.SourceAddress(), metadata.String(), rule.RuleType().String(), rule.Payload(), rawPc.Chains().String())
+			log.Infoln("[UDP] %s --> %s match %s(%s) using %s", metadata.SourceAddress(), metadata.RemoteAddress(), rule.RuleType().String(), rule.Payload(), rawPc.Chains().String())
 		case mode == Global:
-			log.Infoln("[UDP] %s --> %v using GLOBAL", metadata.SourceAddress(), metadata.String())
+			log.Infoln("[UDP] %s --> %s using GLOBAL", metadata.SourceAddress(), metadata.RemoteAddress())
 		case mode == Direct:
-			log.Infoln("[UDP] %s --> %v using DIRECT", metadata.SourceAddress(), metadata.String())
+			log.Infoln("[UDP] %s --> %s using DIRECT", metadata.SourceAddress(), metadata.RemoteAddress())
 		default:
-			log.Infoln("[UDP] %s --> %v doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.String())
+			log.Infoln("[UDP] %s --> %s doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.RemoteAddress())
 		}
 
 		go handleUDPToLocal(packet.UDPPacket, pc, key, fAddr)
@@ -269,9 +269,9 @@ func handleTCPConn(ctx C.ConnContext) {
 	remoteConn, err := proxy.Dial(metadata)
 	if err != nil {
 		if rule == nil {
-			log.Warnln("[TCP] dial %s to %s error: %s", proxy.Name(), metadata.String(), err.Error())
+			log.Warnln("[TCP] dial %s to %s error: %s", proxy.Name(), metadata.RemoteAddress(), err.Error())
 		} else {
-			log.Warnln("[TCP] dial %s (match %s/%s) to %s error: %s", proxy.Name(), rule.RuleType().String(), rule.Payload(), metadata.String(), err.Error())
+			log.Warnln("[TCP] dial %s (match %s/%s) to %s error: %s", proxy.Name(), rule.RuleType().String(), rule.Payload(), metadata.RemoteAddress(), err.Error())
 		}
 		return
 	}
@@ -280,13 +280,13 @@ func handleTCPConn(ctx C.ConnContext) {
 
 	switch true {
 	case rule != nil:
-		log.Infoln("[TCP] %s --> %v match %s(%s) using %s", metadata.SourceAddress(), metadata.String(), rule.RuleType().String(), rule.Payload(), remoteConn.Chains().String())
+		log.Infoln("[TCP] %s --> %s match %s(%s) using %s", metadata.SourceAddress(), metadata.RemoteAddress(), rule.RuleType().String(), rule.Payload(), remoteConn.Chains().String())
 	case mode == Global:
-		log.Infoln("[TCP] %s --> %v using GLOBAL", metadata.SourceAddress(), metadata.String())
+		log.Infoln("[TCP] %s --> %s using GLOBAL", metadata.SourceAddress(), metadata.RemoteAddress())
 	case mode == Direct:
-		log.Infoln("[TCP] %s --> %v using DIRECT", metadata.SourceAddress(), metadata.String())
+		log.Infoln("[TCP] %s --> %s using DIRECT", metadata.SourceAddress(), metadata.RemoteAddress())
 	default:
-		log.Infoln("[TCP] %s --> %v doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.String())
+		log.Infoln("[TCP] %s --> %s doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.RemoteAddress())
 	}
 
 	handleSocket(ctx, remoteConn)