Chore: update dependencies

.github/workflows/docker.yml

@@ -17,36 +17,60 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+
       - name: Set up docker buildx
         id: buildx
-        uses: crazy-max/ghaction-docker-buildx@v3
+        uses: docker/setup-buildx-action@v1
         with:
-          buildx-version: latest
+          version: latest
-          qemu-version: latest
 
-      - name: Docker login
+      - name: Login to DockerHub
-        env:
+        uses: docker/login-action@v1
-          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+        with:
-          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+          username: ${{ secrets.DOCKER_USERNAME }}
-        run: |
+          password: ${{ secrets.DOCKER_PASSWORD }}
-          echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin
       
-      - name: Docker buildx image and push on dev branch
+      - name: Login to Github Package
-        if: github.ref == 'refs/heads/dev'
+        uses: docker/login-action@v1
-        run: |
+        with:
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:dev .
+          registry: ghcr.io
+          username: Dreamacro
+          password: ${{ secrets.PACKAGE_TOKEN }}
 
-      - name: Replace tag without `v`
+      - name: Build dev branch and push
+        if: github.ref == 'refs/heads/dev'
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          push: true
+          tags: 'dreamacro/clash:dev,ghcr.io/dreamacro/clash:dev'
+
+      - name: Get all docker tags
         if: startsWith(github.ref, 'refs/tags/')
         uses: actions/github-script@v3
-        id: version
+        id: tags
         with:
           script: |
-            return context.payload.ref.replace(/\/?refs\/tags\/v/, '')
+            const ref = `${context.payload.ref.replace(/\/?refs\/tags\//, '')}`
+            const tags = [
+              'dreamacro/clash:latest',
+              `dreamacro/clash:${ref}`,
+              'ghcr.io/dreamacro/clash:latest',
+              `ghcr.io/dreamacro/clash:${ref}`
+            ]
+            return tags.join(',')
           result-encoding: string
 
-      - name: Docker buildx image and push on release
+      - name: Build release and push
         if: startsWith(github.ref, 'refs/tags/')
-        run: |
+        uses: docker/build-push-action@v2
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:${{steps.version.outputs.result}} .
+        with:
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:latest .
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          push: true
+          tags: ${{steps.tags.outputs.result}}

.github/workflows/stale.yml

@@ -14,6 +14,6 @@ jobs:
       - uses: actions/stale@v3
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-          stale-issue-message: 'This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 5 days'
+          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: 120
+          days-before-stale: 60
           days-before-close: 5

Dockerfile

@@ -10,6 +10,7 @@ RUN go mod download && \
     mv ./bin/clash-docker /clash
 
 FROM alpine:latest
+LABEL org.opencontainers.image.source https://github.com/Dreamacro/clash
 
 RUN apk add --no-cache ca-certificates
 COPY --from=builder /Country.mmdb /root/.config/clash/

adapters/outbound/base.go

@@ -6,11 +6,12 @@ import (
 	"errors"
 	"net"
 	"net/http"
-	"sync/atomic"
 	"time"
 
 	"github.com/Dreamacro/clash/common/queue"
 	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
 )
 
 type Base struct {
@@ -95,11 +96,11 @@ func newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
 type Proxy struct {
 	C.ProxyAdapter
 	history *queue.Queue
-	alive   uint32
+	alive   *atomic.Bool
 }
 
 func (p *Proxy) Alive() bool {
-	return atomic.LoadUint32(&p.alive) > 0
+	return p.alive.Load()
 }
 
 func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
@@ -111,7 +112,7 @@ func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
 func (p *Proxy) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
 	conn, err := p.ProxyAdapter.DialContext(ctx, metadata)
 	if err != nil {
-		atomic.StoreUint32(&p.alive, 0)
+		p.alive.Store(false)
 	}
 	return conn, err
 }
@@ -128,7 +129,7 @@ func (p *Proxy) DelayHistory() []C.DelayHistory {
 // LastDelay return last history record. if proxy is not alive, return the max value of uint16.
 func (p *Proxy) LastDelay() (delay uint16) {
 	var max uint16 = 0xffff
-	if atomic.LoadUint32(&p.alive) == 0 {
+	if !p.alive.Load() {
 		return max
 	}
 
@@ -159,11 +160,7 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
 // URLTest get the delay for the specified URL
 func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 	defer func() {
-		if err == nil {
+		p.alive.Store(err == nil)
-			atomic.StoreUint32(&p.alive, 1)
-		} else {
-			atomic.StoreUint32(&p.alive, 0)
-		}
 		record := C.DelayHistory{Time: time.Now()}
 		if err == nil {
 			record.Delay = t
@@ -219,5 +216,5 @@ func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 }
 
 func NewProxy(adapter C.ProxyAdapter) *Proxy {
-	return &Proxy{adapter, queue.New(10), 1}
+	return &Proxy{adapter, queue.New(10), atomic.NewBool(true)}
 }

adapters/outboundgroup/common.go

@@ -11,10 +11,14 @@ const (
 	defaultGetProxiesDuration = time.Second * 5
 )
 
-func getProvidersProxies(providers []provider.ProxyProvider) []C.Proxy {
+func getProvidersProxies(providers []provider.ProxyProvider, touch bool) []C.Proxy {
 	proxies := []C.Proxy{}
 	for _, provider := range providers {
-		proxies = append(proxies, provider.Proxies()...)
+		if touch {
+			proxies = append(proxies, provider.ProxiesWithTouch()...)
+		} else {
+			proxies = append(proxies, provider.Proxies()...)
+		}
 	}
 	return proxies
 }

adapters/outboundgroup/fallback.go

@@ -12,17 +12,18 @@ import (
 
 type Fallback struct {
 	*outbound.Base
-	single    *singledo.Single
+	disableUDP bool
-	providers []provider.ProxyProvider
+	single     *singledo.Single
+	providers  []provider.ProxyProvider
 }
 
 func (f *Fallback) Now() string {
-	proxy := f.findAliveProxy()
+	proxy := f.findAliveProxy(false)
 	return proxy.Name()
 }
 
 func (f *Fallback) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxy := f.findAliveProxy()
+	proxy := f.findAliveProxy(true)
 	c, err := proxy.DialContext(ctx, metadata)
 	if err == nil {
 		c.AppendToChains(f)
@@ -31,7 +32,7 @@ func (f *Fallback) DialContext(ctx context.Context, metadata *C.Metadata) (C.Con
 }
 
 func (f *Fallback) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	proxy := f.findAliveProxy()
+	proxy := f.findAliveProxy(true)
 	pc, err := proxy.DialUDP(metadata)
 	if err == nil {
 		pc.AppendToChains(f)
@@ -40,13 +41,17 @@ func (f *Fallback) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 }
 
 func (f *Fallback) SupportUDP() bool {
-	proxy := f.findAliveProxy()
+	if f.disableUDP {
+		return false
+	}
+
+	proxy := f.findAliveProxy(false)
 	return proxy.SupportUDP()
 }
 
 func (f *Fallback) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range f.proxies() {
+	for _, proxy := range f.proxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -57,33 +62,34 @@ func (f *Fallback) MarshalJSON() ([]byte, error) {
 }
 
 func (f *Fallback) Unwrap(metadata *C.Metadata) C.Proxy {
-	proxy := f.findAliveProxy()
+	proxy := f.findAliveProxy(true)
 	return proxy
 }
 
-func (f *Fallback) proxies() []C.Proxy {
+func (f *Fallback) proxies(touch bool) []C.Proxy {
 	elm, _, _ := f.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(f.providers), nil
+		return getProvidersProxies(f.providers, touch), nil
 	})
 
 	return elm.([]C.Proxy)
 }
 
-func (f *Fallback) findAliveProxy() C.Proxy {
+func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
-	proxies := f.proxies()
+	proxies := f.proxies(touch)
 	for _, proxy := range proxies {
 		if proxy.Alive() {
 			return proxy
 		}
 	}
 
-	return f.proxies()[0]
+	return proxies[0]
 }
 
-func NewFallback(name string, providers []provider.ProxyProvider) *Fallback {
+func NewFallback(options *GroupCommonOption, providers []provider.ProxyProvider) *Fallback {
 	return &Fallback{
-		Base:      outbound.NewBase(name, "", C.Fallback, false),
+		Base:       outbound.NewBase(options.Name, "", C.Fallback, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
+		providers:  providers,
+		disableUDP: options.DisableUDP,
 	}
 }

adapters/outboundgroup/loadbalance.go

@@ -3,6 +3,8 @@ package outboundgroup
 import (
 	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"net"
 
 	"github.com/Dreamacro/clash/adapters/outbound"
@@ -14,11 +16,25 @@ import (
 	"golang.org/x/net/publicsuffix"
 )
 
+type strategyFn = func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy
+
 type LoadBalance struct {
 	*outbound.Base
-	single    *singledo.Single
+	disableUDP bool
-	maxRetry  int
+	single     *singledo.Single
-	providers []provider.ProxyProvider
+	providers  []provider.ProxyProvider
+	strategyFn strategyFn
+}
+
+var errStrategy = errors.New("unsupported strategy")
+
+func parseStrategy(config map[string]interface{}) string {
+	if elm, ok := config["strategy"]; ok {
+		if strategy, ok := elm.(string); ok {
+			return strategy
+		}
+	}
+	return "consistent-hashing"
 }
 
 func getKey(metadata *C.Metadata) string {
@@ -78,27 +94,50 @@ func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error
 }
 
 func (lb *LoadBalance) SupportUDP() bool {
-	return true
+	return !lb.disableUDP
+}
+
+func strategyRoundRobin() strategyFn {
+	idx := 0
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		length := len(proxies)
+		for i := 0; i < length; i++ {
+			idx = (idx + 1) % length
+			proxy := proxies[idx]
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+func strategyConsistentHashing() strategyFn {
+	maxRetry := 5
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
+		buckets := int32(len(proxies))
+		for i := 0; i < maxRetry; i, key = i+1, key+1 {
+			idx := jumpHash(key, buckets)
+			proxy := proxies[idx]
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
 }
 
 func (lb *LoadBalance) Unwrap(metadata *C.Metadata) C.Proxy {
-	key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
+	proxies := lb.proxies(true)
-	proxies := lb.proxies()
+	return lb.strategyFn(proxies, metadata)
-	buckets := int32(len(proxies))
-	for i := 0; i < lb.maxRetry; i, key = i+1, key+1 {
-		idx := jumpHash(key, buckets)
-		proxy := proxies[idx]
-		if proxy.Alive() {
-			return proxy
-		}
-	}
-
-	return proxies[0]
 }
 
-func (lb *LoadBalance) proxies() []C.Proxy {
+func (lb *LoadBalance) proxies(touch bool) []C.Proxy {
 	elm, _, _ := lb.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(lb.providers), nil
+		return getProvidersProxies(lb.providers, touch), nil
 	})
 
 	return elm.([]C.Proxy)
@@ -106,7 +145,7 @@ func (lb *LoadBalance) proxies() []C.Proxy {
 
 func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range lb.proxies() {
+	for _, proxy := range lb.proxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -115,11 +154,21 @@ func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
 	})
 }
 
-func NewLoadBalance(name string, providers []provider.ProxyProvider) *LoadBalance {
+func NewLoadBalance(options *GroupCommonOption, providers []provider.ProxyProvider, strategy string) (lb *LoadBalance, err error) {
-	return &LoadBalance{
+	var strategyFn strategyFn
-		Base:      outbound.NewBase(name, "", C.LoadBalance, false),
+	switch strategy {
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
+	case "consistent-hashing":
-		maxRetry:  3,
+		strategyFn = strategyConsistentHashing()
-		providers: providers,
+	case "round-robin":
+		strategyFn = strategyRoundRobin()
+	default:
+		return nil, fmt.Errorf("%w: %s", errStrategy, strategy)
 	}
+	return &LoadBalance{
+		Base:       outbound.NewBase(options.Name, "", C.LoadBalance, false),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		strategyFn: strategyFn,
+		disableUDP: options.DisableUDP,
+	}, nil
 }

adapters/outboundgroup/parser.go

@@ -18,18 +18,22 @@ var (
 )
 
 type GroupCommonOption struct {
-	Name     string   `group:"name"`
+	Name       string   `group:"name"`
-	Type     string   `group:"type"`
+	Type       string   `group:"type"`
-	Proxies  []string `group:"proxies,omitempty"`
+	Proxies    []string `group:"proxies,omitempty"`
-	Use      []string `group:"use,omitempty"`
+	Use        []string `group:"use,omitempty"`
-	URL      string   `group:"url,omitempty"`
+	URL        string   `group:"url,omitempty"`
-	Interval int      `group:"interval,omitempty"`
+	Interval   int      `group:"interval,omitempty"`
+	Lazy       bool     `group:"lazy,omitempty"`
+	DisableUDP bool     `group:"disable-udp,omitempty"`
 }
 
 func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy, providersMap map[string]provider.ProxyProvider) (C.ProxyAdapter, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "group", WeaklyTypedInput: true})
 
-	groupOption := &GroupCommonOption{}
+	groupOption := &GroupCommonOption{
+		Lazy: true,
+	}
 	if err := decoder.Decode(config, groupOption); err != nil {
 		return nil, errFormat
 	}
@@ -54,7 +58,7 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 
 		// if Use not empty, drop health check options
 		if len(groupOption.Use) != 0 {
-			hc := provider.NewHealthCheck(ps, "", 0)
+			hc := provider.NewHealthCheck(ps, "", 0, true)
 			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 			if err != nil {
 				return nil, err
@@ -68,7 +72,7 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 
 			// select don't need health check
 			if groupOption.Type == "select" || groupOption.Type == "relay" {
-				hc := provider.NewHealthCheck(ps, "", 0)
+				hc := provider.NewHealthCheck(ps, "", 0, true)
 				pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 				if err != nil {
 					return nil, err
@@ -81,7 +85,7 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 					return nil, errMissHealthCheck
 				}
 
-				hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval))
+				hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
 				pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 				if err != nil {
 					return nil, err
@@ -105,15 +109,16 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 	switch groupOption.Type {
 	case "url-test":
 		opts := parseURLTestOption(config)
-		group = NewURLTest(groupName, providers, opts...)
+		group = NewURLTest(groupOption, providers, opts...)
 	case "select":
-		group = NewSelector(groupName, providers)
+		group = NewSelector(groupOption, providers)
 	case "fallback":
-		group = NewFallback(groupName, providers)
+		group = NewFallback(groupOption, providers)
 	case "load-balance":
-		group = NewLoadBalance(groupName, providers)
+		strategy := parseStrategy(config)
+		return NewLoadBalance(groupOption, providers, strategy)
 	case "relay":
-		group = NewRelay(groupName, providers)
+		group = NewRelay(groupOption, providers)
 	default:
 		return nil, fmt.Errorf("%w: %s", errType, groupOption.Type)
 	}

adapters/outboundgroup/relay.go

@@ -20,7 +20,7 @@ type Relay struct {
 }
 
 func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	proxies := r.proxies(metadata)
+	proxies := r.proxies(metadata, true)
 	if len(proxies) == 0 {
 		return nil, errors.New("proxy does not exist")
 	}
@@ -58,7 +58,7 @@ func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 
 func (r *Relay) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range r.rawProxies() {
+	for _, proxy := range r.rawProxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -67,16 +67,16 @@ func (r *Relay) MarshalJSON() ([]byte, error) {
 	})
 }
 
-func (r *Relay) rawProxies() []C.Proxy {
+func (r *Relay) rawProxies(touch bool) []C.Proxy {
 	elm, _, _ := r.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(r.providers), nil
+		return getProvidersProxies(r.providers, touch), nil
 	})
 
 	return elm.([]C.Proxy)
 }
 
-func (r *Relay) proxies(metadata *C.Metadata) []C.Proxy {
+func (r *Relay) proxies(metadata *C.Metadata, touch bool) []C.Proxy {
-	proxies := r.rawProxies()
+	proxies := r.rawProxies(touch)
 
 	for n, proxy := range proxies {
 		subproxy := proxy.Unwrap(metadata)
@@ -89,9 +89,9 @@ func (r *Relay) proxies(metadata *C.Metadata) []C.Proxy {
 	return proxies
 }
 
-func NewRelay(name string, providers []provider.ProxyProvider) *Relay {
+func NewRelay(options *GroupCommonOption, providers []provider.ProxyProvider) *Relay {
 	return &Relay{
-		Base:      outbound.NewBase(name, "", C.Relay, false),
+		Base:      outbound.NewBase(options.Name, "", C.Relay, false),
 		single:    singledo.NewSingle(defaultGetProxiesDuration),
 		providers: providers,
 	}

adapters/outboundgroup/selector.go

@@ -13,13 +13,14 @@ import (
 
 type Selector struct {
 	*outbound.Base
-	single    *singledo.Single
+	disableUDP bool
-	selected  string
+	single     *singledo.Single
-	providers []provider.ProxyProvider
+	selected   string
+	providers  []provider.ProxyProvider
 }
 
 func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := s.selectedProxy().DialContext(ctx, metadata)
+	c, err := s.selectedProxy(true).DialContext(ctx, metadata)
 	if err == nil {
 		c.AppendToChains(s)
 	}
@@ -27,7 +28,7 @@ func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata) (C.Con
 }
 
 func (s *Selector) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := s.selectedProxy().DialUDP(metadata)
+	pc, err := s.selectedProxy(true).DialUDP(metadata)
 	if err == nil {
 		pc.AppendToChains(s)
 	}
@@ -35,12 +36,16 @@ func (s *Selector) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 }
 
 func (s *Selector) SupportUDP() bool {
-	return s.selectedProxy().SupportUDP()
+	if s.disableUDP {
+		return false
+	}
+
+	return s.selectedProxy(false).SupportUDP()
 }
 
 func (s *Selector) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range getProvidersProxies(s.providers) {
+	for _, proxy := range getProvidersProxies(s.providers, false) {
 		all = append(all, proxy.Name())
 	}
 
@@ -52,11 +57,11 @@ func (s *Selector) MarshalJSON() ([]byte, error) {
 }
 
 func (s *Selector) Now() string {
-	return s.selectedProxy().Name()
+	return s.selectedProxy(false).Name()
 }
 
 func (s *Selector) Set(name string) error {
-	for _, proxy := range getProvidersProxies(s.providers) {
+	for _, proxy := range getProvidersProxies(s.providers, false) {
 		if proxy.Name() == name {
 			s.selected = name
 			s.single.Reset()
@@ -68,12 +73,12 @@ func (s *Selector) Set(name string) error {
 }
 
 func (s *Selector) Unwrap(metadata *C.Metadata) C.Proxy {
-	return s.selectedProxy()
+	return s.selectedProxy(true)
 }
 
-func (s *Selector) selectedProxy() C.Proxy {
+func (s *Selector) selectedProxy(touch bool) C.Proxy {
 	elm, _, _ := s.single.Do(func() (interface{}, error) {
-		proxies := getProvidersProxies(s.providers)
+		proxies := getProvidersProxies(s.providers, touch)
 		for _, proxy := range proxies {
 			if proxy.Name() == s.selected {
 				return proxy, nil
@@ -86,12 +91,13 @@ func (s *Selector) selectedProxy() C.Proxy {
 	return elm.(C.Proxy)
 }
 
-func NewSelector(name string, providers []provider.ProxyProvider) *Selector {
+func NewSelector(options *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
 	selected := providers[0].Proxies()[0].Name()
 	return &Selector{
-		Base:      outbound.NewBase(name, "", C.Selector, false),
+		Base:       outbound.NewBase(options.Name, "", C.Selector, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
+		providers:  providers,
-		selected:  selected,
+		selected:   selected,
+		disableUDP: options.DisableUDP,
 	}
 }

adapters/outboundgroup/urltest.go

@@ -22,6 +22,7 @@ func urlTestWithTolerance(tolerance uint16) urlTestOption {
 type URLTest struct {
 	*outbound.Base
 	tolerance  uint16
+	disableUDP bool
 	fastNode   C.Proxy
 	single     *singledo.Single
 	fastSingle *singledo.Single
@@ -29,11 +30,11 @@ type URLTest struct {
 }
 
 func (u *URLTest) Now() string {
-	return u.fast().Name()
+	return u.fast(false).Name()
 }
 
 func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Conn, err error) {
-	c, err = u.fast().DialContext(ctx, metadata)
+	c, err = u.fast(true).DialContext(ctx, metadata)
 	if err == nil {
 		c.AppendToChains(u)
 	}
@@ -41,7 +42,7 @@ func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Co
 }
 
 func (u *URLTest) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := u.fast().DialUDP(metadata)
+	pc, err := u.fast(true).DialUDP(metadata)
 	if err == nil {
 		pc.AppendToChains(u)
 	}
@@ -49,20 +50,20 @@ func (u *URLTest) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 }
 
 func (u *URLTest) Unwrap(metadata *C.Metadata) C.Proxy {
-	return u.fast()
+	return u.fast(true)
 }
 
-func (u *URLTest) proxies() []C.Proxy {
+func (u *URLTest) proxies(touch bool) []C.Proxy {
 	elm, _, _ := u.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(u.providers), nil
+		return getProvidersProxies(u.providers, touch), nil
 	})
 
 	return elm.([]C.Proxy)
 }
 
-func (u *URLTest) fast() C.Proxy {
+func (u *URLTest) fast(touch bool) C.Proxy {
 	elm, _, _ := u.fastSingle.Do(func() (interface{}, error) {
-		proxies := u.proxies()
+		proxies := u.proxies(touch)
 		fast := proxies[0]
 		min := fast.LastDelay()
 		for _, proxy := range proxies[1:] {
@@ -89,12 +90,16 @@ func (u *URLTest) fast() C.Proxy {
 }
 
 func (u *URLTest) SupportUDP() bool {
-	return u.fast().SupportUDP()
+	if u.disableUDP {
+		return false
+	}
+
+	return u.fast(false).SupportUDP()
 }
 
 func (u *URLTest) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range u.proxies() {
+	for _, proxy := range u.proxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -117,12 +122,13 @@ func parseURLTestOption(config map[string]interface{}) []urlTestOption {
 	return opts
 }
 
-func NewURLTest(name string, providers []provider.ProxyProvider, options ...urlTestOption) *URLTest {
+func NewURLTest(commonOptions *GroupCommonOption, providers []provider.ProxyProvider, options ...urlTestOption) *URLTest {
 	urlTest := &URLTest{
-		Base:       outbound.NewBase(name, "", C.URLTest, false),
+		Base:       outbound.NewBase(commonOptions.Name, "", C.URLTest, false),
 		single:     singledo.NewSingle(defaultGetProxiesDuration),
 		fastSingle: singledo.NewSingle(time.Second * 10),
 		providers:  providers,
+		disableUDP: commonOptions.DisableUDP,
 	}
 
 	for _, option := range options {

adapters/provider/healthcheck.go

@@ -5,6 +5,8 @@ import (
 	"time"
 
 	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
 )
 
 const (
@@ -17,10 +19,12 @@ type HealthCheckOption struct {
 }
 
 type HealthCheck struct {
-	url      string
+	url       string
-	proxies  []C.Proxy
+	proxies   []C.Proxy
-	interval uint
+	interval  uint
-	done     chan struct{}
+	lazy      bool
+	lastTouch *atomic.Int64
+	done      chan struct{}
 }
 
 func (hc *HealthCheck) process() {
@@ -30,7 +34,10 @@ func (hc *HealthCheck) process() {
 	for {
 		select {
 		case <-ticker.C:
-			hc.check()
+			now := time.Now().Unix()
+			if !hc.lazy || now-hc.lastTouch.Load() < int64(hc.interval) {
+				hc.check()
+			}
 		case <-hc.done:
 			ticker.Stop()
 			return
@@ -46,6 +53,10 @@ func (hc *HealthCheck) auto() bool {
 	return hc.interval != 0
 }
 
+func (hc *HealthCheck) touch() {
+	hc.lastTouch.Store(time.Now().Unix())
+}
+
 func (hc *HealthCheck) check() {
 	ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)
 	for _, proxy := range hc.proxies {
@@ -60,11 +71,13 @@ func (hc *HealthCheck) close() {
 	hc.done <- struct{}{}
 }
 
-func NewHealthCheck(proxies []C.Proxy, url string, interval uint) *HealthCheck {
+func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool) *HealthCheck {
 	return &HealthCheck{
-		proxies:  proxies,
+		proxies:   proxies,
-		url:      url,
+		url:       url,
-		interval: interval,
+		interval:  interval,
-		done:     make(chan struct{}, 1),
+		lazy:      lazy,
+		lastTouch: atomic.NewInt64(0),
+		done:      make(chan struct{}, 1),
 	}
 }

adapters/provider/parser.go

@@ -17,6 +17,7 @@ type healthCheckSchema struct {
 	Enable   bool   `provider:"enable"`
 	URL      string `provider:"url"`
 	Interval int    `provider:"interval"`
+	Lazy     bool   `provider:"lazy,omitempty"`
 }
 
 type proxyProviderSchema struct {
@@ -30,7 +31,11 @@ type proxyProviderSchema struct {
 func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvider, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "provider", WeaklyTypedInput: true})
 
-	schema := &proxyProviderSchema{}
+	schema := &proxyProviderSchema{
+		HealthCheck: healthCheckSchema{
+			Lazy: true,
+		},
+	}
 	if err := decoder.Decode(mapping, schema); err != nil {
 		return nil, err
 	}
@@ -39,7 +44,7 @@ func ParseProxyProvider(name string, mapping map[string]interface{}) (ProxyProvi
 	if schema.HealthCheck.Enable {
 		hcInterval = uint(schema.HealthCheck.Interval)
 	}
-	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval)
+	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval, schema.HealthCheck.Lazy)
 
 	path := C.Path.Resolve(schema.Path)
 

adapters/provider/provider.go

@@ -50,6 +50,9 @@ type Provider 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()
 }
 
@@ -112,6 +115,11 @@ func (pp *proxySetProvider) Proxies() []C.Proxy {
 	return pp.proxies
 }
 
+func (pp *proxySetProvider) ProxiesWithTouch() []C.Proxy {
+	pp.healthCheck.touch()
+	return pp.Proxies()
+}
+
 func proxiesParse(buf []byte) (interface{}, error) {
 	schema := &ProxySchema{}
 
@@ -223,6 +231,11 @@ func (cp *compatibleProvider) Proxies() []C.Proxy {
 	return cp.proxies
 }
 
+func (cp *compatibleProvider) ProxiesWithTouch() []C.Proxy {
+	cp.healthCheck.touch()
+	return cp.Proxies()
+}
+
 func stopCompatibleProvider(pd *CompatibleProvider) {
 	pd.healthCheck.close()
 }

common/cache/lrucache.go

@@ -121,7 +121,7 @@ func (c *LruCache) Set(key interface{}, value interface{}) {
 	c.SetWithExpire(key, value, time.Unix(expires, 0))
 }
 
-// SetWithExpire stores the interface{} representation of a response for a given key and given exires.
+// SetWithExpire stores the interface{} representation of a response for a given key and given expires.
 // The expires time will round to second.
 func (c *LruCache) SetWithExpire(key interface{}, value interface{}, expires time.Time) {
 	c.mu.Lock()

common/observable/observable_test.go

@@ -2,11 +2,11 @@ package observable
 
 import (
 	"sync"
-	"sync/atomic"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"go.uber.org/atomic"
 )
 
 func iterator(item []interface{}) chan interface{} {
@@ -33,25 +33,25 @@ func TestObservable(t *testing.T) {
 	assert.Equal(t, count, 5)
 }
 
-func TestObservable_MutilSubscribe(t *testing.T) {
+func TestObservable_MultiSubscribe(t *testing.T) {
 	iter := iterator([]interface{}{1, 2, 3, 4, 5})
 	src := NewObservable(iter)
 	ch1, _ := src.Subscribe()
 	ch2, _ := src.Subscribe()
-	var count int32
+	var count = atomic.NewInt32(0)
 
 	var wg sync.WaitGroup
 	wg.Add(2)
 	waitCh := func(ch <-chan interface{}) {
 		for range ch {
-			atomic.AddInt32(&count, 1)
+			count.Inc()
 		}
 		wg.Done()
 	}
 	go waitCh(ch1)
 	go waitCh(ch2)
 	wg.Wait()
-	assert.Equal(t, int32(10), count)
+	assert.Equal(t, int32(10), count.Load())
 }
 
 func TestObservable_UnSubscribe(t *testing.T) {
@@ -113,3 +113,34 @@ func TestObservable_SubscribeGoroutineLeak(t *testing.T) {
 	_, more := <-list[0]
 	assert.False(t, more)
 }
+
+func Benchmark_Observable_1000(b *testing.B) {
+	ch := make(chan interface{})
+	o := NewObservable(ch)
+	num := 1000
+
+	subs := []Subscription{}
+	for i := 0; i < num; i++ {
+		sub, _ := o.Subscribe()
+		subs = append(subs, sub)
+	}
+
+	wg := sync.WaitGroup{}
+	wg.Add(num)
+
+	b.ResetTimer()
+	for _, sub := range subs {
+		go func(s Subscription) {
+			for range s {
+			}
+			wg.Done()
+		}(sub)
+	}
+
+	for i := 0; i < b.N; i++ {
+		ch <- i
+	}
+
+	close(ch)
+	wg.Wait()
+}

common/observable/subscriber.go

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

common/pool/alloc.go

@@ -61,7 +61,7 @@ func (alloc *Allocator) Put(buf []byte) error {
 	return nil
 }
 
-// msb return the pos of most significiant bit
+// msb return the pos of most significant bit
 func msb(size int) uint16 {
 	return uint16(bits.Len32(uint32(size)) - 1)
 }

common/singledo/singledo.go

@@ -24,8 +24,8 @@ type Result struct {
 	Err error
 }
 
-// Do single.Do likes sync.singleFilght
+// Do single.Do likes sync.singleFlight
-//lint:ignore ST1008 it likes sync.singleFilght
+//lint:ignore ST1008 it likes sync.singleFlight
 func (s *Single) Do(fn func() (interface{}, error)) (v interface{}, err error, shared bool) {
 	s.mux.Lock()
 	now := time.Now()

common/singledo/singledo_test.go

@@ -2,17 +2,17 @@ package singledo
 
 import (
 	"sync"
-	"sync/atomic"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"go.uber.org/atomic"
 )
 
 func TestBasic(t *testing.T) {
 	single := NewSingle(time.Millisecond * 30)
 	foo := 0
-	var shardCount int32 = 0
+	var shardCount = atomic.NewInt32(0)
 	call := func() (interface{}, error) {
 		foo++
 		time.Sleep(time.Millisecond * 5)
@@ -26,7 +26,7 @@ func TestBasic(t *testing.T) {
 		go func() {
 			_, _, shard := single.Do(call)
 			if shard {
-				atomic.AddInt32(&shardCount, 1)
+				shardCount.Inc()
 			}
 			wg.Done()
 		}()
@@ -34,7 +34,7 @@ func TestBasic(t *testing.T) {
 
 	wg.Wait()
 	assert.Equal(t, 1, foo)
-	assert.Equal(t, int32(4), shardCount)
+	assert.Equal(t, int32(4), shardCount.Load())
 }
 
 func TestTimer(t *testing.T) {

component/dialer/bind.go

@@ -0,0 +1,104 @@
+package dialer
+
+import (
+	"errors"
+	"net"
+)
+
+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 {
+	iface, err := net.InterfaceByName(name)
+	if err != nil {
+		return err
+	}
+
+	addrs, err := iface.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 := net.InterfaceByName(name)
+	if err != nil {
+		return "", err
+	}
+
+	addrs, err := iface.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

@@ -0,0 +1,51 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+)
+
+type controlFn = func(network, address string, c syscall.RawConn) error
+
+func bindControl(ifaceIdx int) controlFn {
+	return func(network, address string, c syscall.RawConn) error {
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return nil
+			}
+		}
+
+		return c.Control(func(fd uintptr) {
+			switch network {
+			case "tcp4", "udp4":
+				syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IP, syscall.IP_BOUND_IF, ifaceIdx)
+			case "tcp6", "udp6":
+				syscall.SetsockoptInt(int(fd), syscall.IPPROTO_IPV6, syscall.IPV6_BOUND_IF, ifaceIdx)
+			}
+		})
+	}
+}
+
+func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
+	iface, err := net.InterfaceByName(ifaceName)
+	if err != nil {
+		return err
+	}
+
+	dialer.Control = bindControl(iface.Index)
+
+	return nil
+}
+
+func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
+	iface, err := net.InterfaceByName(ifaceName)
+	if err != nil {
+		return err
+	}
+
+	lc.Control = bindControl(iface.Index)
+
+	return nil
+}

component/dialer/bind_linux.go

@@ -0,0 +1,36 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+)
+
+type controlFn = func(network, address string, c syscall.RawConn) error
+
+func bindControl(ifaceName string) controlFn {
+	return func(network, address string, c syscall.RawConn) error {
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return nil
+			}
+		}
+
+		return c.Control(func(fd uintptr) {
+			syscall.BindToDevice(int(fd), ifaceName)
+		})
+	}
+}
+
+func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
+	dialer.Control = bindControl(ifaceName)
+
+	return nil
+}
+
+func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
+	lc.Control = bindControl(ifaceName)
+
+	return nil
+}

component/dialer/bind_others.go

@@ -0,0 +1,13 @@
+// +build !linux,!darwin
+
+package dialer
+
+import "net"
+
+func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
+	return errPlatformNotSupport
+}
+
+func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
+	return errPlatformNotSupport
+}

component/dialer/dialer.go

@@ -19,17 +19,6 @@ func Dialer() (*net.Dialer, error) {
 	return dialer, nil
 }
 
-func ListenConfig() (*net.ListenConfig, error) {
-	cfg := &net.ListenConfig{}
-	if ListenConfigHook != nil {
-		if err := ListenConfigHook(cfg); err != nil {
-			return nil, err
-		}
-	}
-
-	return cfg, nil
-}
-
 func Dial(network, address string) (net.Conn, error) {
 	return DialContext(context.Background(), network, address)
 }
@@ -73,19 +62,16 @@ func DialContext(ctx context.Context, network, address string) (net.Conn, error)
 }
 
 func ListenPacket(network, address string) (net.PacketConn, error) {
-	lc, err := ListenConfig()
+	cfg := &net.ListenConfig{}
-	if err != nil {
+	if ListenPacketHook != nil {
-		return nil, err
+		var err error
-	}
+		address, err = ListenPacketHook(cfg, address)
-
-	if ListenPacketHook != nil && address == "" {
-		ip, err := ListenPacketHook()
 		if err != nil {
 			return nil, err
 		}
-		address = net.JoinHostPort(ip.String(), "0")
 	}
-	return lc.ListenPacket(context.Background(), network, address)
+
+	return cfg.ListenPacket(context.Background(), network, address)
 }
 
 func dualStackDialContext(ctx context.Context, network, address string) (net.Conn, error) {

component/dialer/hook.go

@@ -3,20 +3,15 @@ package dialer
 import (
 	"errors"
 	"net"
-	"time"
-
-	"github.com/Dreamacro/clash/common/singledo"
 )
 
 type DialerHookFunc = func(dialer *net.Dialer) error
 type DialHookFunc = func(dialer *net.Dialer, network string, ip net.IP) error
-type ListenConfigHookFunc = func(*net.ListenConfig) error
+type ListenPacketHookFunc = func(lc *net.ListenConfig, address string) (string, error)
-type ListenPacketHookFunc = func() (net.IP, error)
 
 var (
 	DialerHook       DialerHookFunc
 	DialHook         DialHookFunc
-	ListenConfigHook ListenConfigHookFunc
 	ListenPacketHook ListenPacketHookFunc
 )
 
@@ -25,124 +20,24 @@ var (
 	ErrNetworkNotSupport = errors.New("network not support")
 )
 
-func lookupTCPAddr(ip net.IP, addrs []net.Addr) (*net.TCPAddr, error) {
-	ipv4 := ip.To4() != nil
-
-	for _, elm := range addrs {
-		addr, ok := elm.(*net.IPNet)
-		if !ok {
-			continue
-		}
-
-		addrV4 := addr.IP.To4() != nil
-
-		if addrV4 && ipv4 {
-			return &net.TCPAddr{IP: addr.IP, Port: 0}, nil
-		} else if !addrV4 && !ipv4 {
-			return &net.TCPAddr{IP: addr.IP, Port: 0}, nil
-		}
-	}
-
-	return nil, ErrAddrNotFound
-}
-
-func lookupUDPAddr(ip net.IP, addrs []net.Addr) (*net.UDPAddr, error) {
-	ipv4 := ip.To4() != nil
-
-	for _, elm := range addrs {
-		addr, ok := elm.(*net.IPNet)
-		if !ok {
-			continue
-		}
-
-		addrV4 := addr.IP.To4() != nil
-
-		if addrV4 && ipv4 {
-			return &net.UDPAddr{IP: addr.IP, Port: 0}, nil
-		} else if !addrV4 && !ipv4 {
-			return &net.UDPAddr{IP: addr.IP, Port: 0}, nil
-		}
-	}
-
-	return nil, ErrAddrNotFound
-}
-
 func ListenPacketWithInterface(name string) ListenPacketHookFunc {
-	single := singledo.NewSingle(5 * time.Second)
+	return func(lc *net.ListenConfig, address string) (string, error) {
-
+		err := bindIfaceToListenConfig(lc, name)
-	return func() (net.IP, error) {
+		if err == errPlatformNotSupport {
-		elm, err, _ := single.Do(func() (interface{}, error) {
+			address, err = fallbackBindToListenConfig(name)
-			iface, err := net.InterfaceByName(name)
-			if err != nil {
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return nil, err
 		}
 
-		addrs := elm.([]net.Addr)
+		return address, err
-
-		for _, elm := range addrs {
-			addr, ok := elm.(*net.IPNet)
-			if !ok || addr.IP.To4() == nil {
-				continue
-			}
-
-			return addr.IP, nil
-		}
-
-		return nil, ErrAddrNotFound
 	}
 }
 
 func DialerWithInterface(name string) DialHookFunc {
-	single := singledo.NewSingle(5 * time.Second)
-
 	return func(dialer *net.Dialer, network string, ip net.IP) error {
-		elm, err, _ := single.Do(func() (interface{}, error) {
+		err := bindIfaceToDialer(dialer, name)
-			iface, err := net.InterfaceByName(name)
+		if err == errPlatformNotSupport {
-			if err != nil {
+			err = fallbackBindToDialer(dialer, network, ip, name)
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return err
 		}
 
-		addrs := elm.([]net.Addr)
+		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
 	}
 }

component/fakeip/pool.go

@@ -17,6 +17,7 @@ type Pool struct {
 	offset  uint32
 	mux     sync.Mutex
 	host    *trie.DomainTrie
+	ipnet   *net.IPNet
 	cache   *cache.LruCache
 }
 
@@ -89,6 +90,11 @@ func (p *Pool) Gateway() net.IP {
 	return uintToIP(p.gateway)
 }
 
+// IPNet return raw ipnet
+func (p *Pool) IPNet() *net.IPNet {
+	return p.ipnet
+}
+
 // PatchFrom clone cache from old pool
 func (p *Pool) PatchFrom(o *Pool) {
 	o.cache.CloneTo(p.cache)
@@ -141,6 +147,7 @@ func New(ipnet *net.IPNet, size int, host *trie.DomainTrie) (*Pool, error) {
 		max:     max,
 		gateway: min - 1,
 		host:    host,
+		ipnet:   ipnet,
 		cache:   cache.NewLRUCache(cache.WithSize(size * 2)),
 	}, nil
 }

component/nat/table.go

@@ -22,9 +22,9 @@ func (t *Table) Get(key string) C.PacketConn {
 	return item.(C.PacketConn)
 }
 
-func (t *Table) GetOrCreateLock(key string) (*sync.WaitGroup, bool) {
+func (t *Table) GetOrCreateLock(key string) (*sync.Cond, bool) {
-	item, loaded := t.mapping.LoadOrStore(key, &sync.WaitGroup{})
+	item, loaded := t.mapping.LoadOrStore(key, sync.NewCond(&sync.Mutex{}))
-	return item.(*sync.WaitGroup), loaded
+	return item.(*sync.Cond), loaded
 }
 
 func (t *Table) Delete(key string) {

component/resolver/enhancer.go

@@ -10,6 +10,7 @@ type Enhancer interface {
 	FakeIPEnabled() bool
 	MappingEnabled() bool
 	IsFakeIP(net.IP) bool
+	IsExistFakeIP(net.IP) bool
 	FindHostByIP(net.IP) (string, bool)
 }
 
@@ -37,6 +38,14 @@ func IsFakeIP(ip net.IP) bool {
 	return false
 }
 
+func IsExistFakeIP(ip net.IP) bool {
+	if mapper := DefaultHostMapper; mapper != nil {
+		return mapper.IsExistFakeIP(ip)
+	}
+
+	return false
+}
+
 func FindHostByIP(ip net.IP) (string, bool) {
 	if mapper := DefaultHostMapper; mapper != nil {
 		return mapper.FindHostByIP(ip)

config/config.go

@@ -38,6 +38,7 @@ type Inbound struct {
 	Port           int      `json:"port"`
 	SocksPort      int      `json:"socks-port"`
 	RedirPort      int      `json:"redir-port"`
+	TProxyPort     int      `json:"tproxy-port"`
 	MixedPort      int      `json:"mixed-port"`
 	Authentication []string `json:"authentication"`
 	AllowLan       bool     `json:"allow-lan"`
@@ -111,6 +112,7 @@ type RawConfig struct {
 	Port               int          `yaml:"port"`
 	SocksPort          int          `yaml:"socks-port"`
 	RedirPort          int          `yaml:"redir-port"`
+	TProxyPort         int          `yaml:"tproxy-port"`
 	MixedPort          int          `yaml:"mixed-port"`
 	Authentication     []string     `yaml:"authentication"`
 	AllowLan           bool         `yaml:"allow-lan"`
@@ -234,6 +236,7 @@ func parseGeneral(cfg *RawConfig) (*General, error) {
 			Port:        cfg.Port,
 			SocksPort:   cfg.SocksPort,
 			RedirPort:   cfg.RedirPort,
+			TProxyPort:  cfg.TProxyPort,
 			MixedPort:   cfg.MixedPort,
 			AllowLan:    cfg.AllowLan,
 			BindAddress: cfg.BindAddress,
@@ -342,11 +345,16 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 	for _, v := range proxyList {
 		ps = append(ps, proxies[v])
 	}
-	hc := provider.NewHealthCheck(ps, "", 0)
+	hc := provider.NewHealthCheck(ps, "", 0, true)
 	pd, _ := provider.NewCompatibleProvider(provider.ReservedName, ps, hc)
 	providersMap[provider.ReservedName] = pd
 
-	global := outboundgroup.NewSelector("GLOBAL", []provider.ProxyProvider{pd})
+	global := outboundgroup.NewSelector(
+		&outboundgroup.GroupCommonOption{
+			Name: "GLOBAL",
+		},
+		[]provider.ProxyProvider{pd},
+	)
 	proxies["GLOBAL"] = outbound.NewProxy(global)
 	return proxies, providersMap, nil
 }

config/utils.go

@@ -23,7 +23,7 @@ func proxyGroupsDagSort(groupsConfig []map[string]interface{}) error {
 		indegree int
 		// topological order
 		topo int
-		// the origional data in `groupsConfig`
+		// the original data in `groupsConfig`
 		data map[string]interface{}
 		// `outdegree` and `from` are used in loop locating
 		outdegree int
@@ -65,7 +65,7 @@ func proxyGroupsDagSort(groupsConfig []map[string]interface{}) error {
 	index := 0
 	queue := make([]string, 0)
 	for name, node := range graph {
-		// in the begning, put nodes that have `node.indegree == 0` into queue.
+		// in the beginning, put nodes that have `node.indegree == 0` into queue.
 		if node.indegree == 0 {
 			queue = append(queue, name)
 		}

constant/adapters.go

@@ -137,7 +137,7 @@ type UDPPacket interface {
 
 	// WriteBack writes the payload with source IP/Port equals addr
 	// - variable source IP/Port is important to STUN
-	// - if addr is not provided, WriteBack will wirte out UDP packet with SourceIP/Prot equals to origional Target,
+	// - if addr is not provided, WriteBack will write out UDP packet with SourceIP/Port equals to original Target,
 	//   this is important when using Fake-IP.
 	WriteBack(b []byte, addr net.Addr) (n int, err error)
 

constant/metadata.go

@@ -19,6 +19,7 @@ const (
 	HTTPCONNECT
 	SOCKS
 	REDIR
+	TPROXY
 )
 
 type NetWork int
@@ -46,6 +47,8 @@ func (t Type) String() string {
 		return "Socks5"
 	case REDIR:
 		return "Redir"
+	case TPROXY:
+		return "TProxy"
 	default:
 		return "Unknown"
 	}

dns/enhancer.go

@@ -21,7 +21,7 @@ func (h *ResolverEnhancer) MappingEnabled() bool {
 	return h.mode == FAKEIP || h.mode == MAPPING
 }
 
-func (h *ResolverEnhancer) IsFakeIP(ip net.IP) bool {
+func (h *ResolverEnhancer) IsExistFakeIP(ip net.IP) bool {
 	if !h.FakeIPEnabled() {
 		return false
 	}
@@ -33,6 +33,18 @@ func (h *ResolverEnhancer) IsFakeIP(ip net.IP) bool {
 	return false
 }
 
+func (h *ResolverEnhancer) IsFakeIP(ip net.IP) bool {
+	if !h.FakeIPEnabled() {
+		return false
+	}
+
+	if pool := h.fakePool; pool != nil {
+		return pool.IPNet().Contains(ip) && !pool.Gateway().Equal(ip)
+	}
+
+	return false
+}
+
 func (h *ResolverEnhancer) FindHostByIP(ip net.IP) (string, bool) {
 	if pool := h.fakePool; pool != nil {
 		if host, existed := pool.LookBack(ip); existed {

dns/middleware.go

@@ -107,16 +107,12 @@ func withFakeIP(fakePool *fakeip.Pool) middleware {
 				return next(r)
 			}
 
-			if q.Qtype == D.TypeAAAA {
+			switch q.Qtype {
-				msg := &D.Msg{}
+			case D.TypeAAAA, D.TypeSVCB, D.TypeHTTPS:
-				msg.Answer = []D.RR{}
+				return handleMsgWithEmptyAnswer(r), nil
+			}
 
-				msg.SetRcode(r, D.RcodeSuccess)
+			if q.Qtype != D.TypeA {
-				msg.Authoritative = true
-				msg.RecursionAvailable = true
-
-				return msg, nil
-			} else if q.Qtype != D.TypeA {
 				return next(r)
 			}
 
@@ -143,14 +139,7 @@ func withResolver(resolver *Resolver) handler {
 
 		// return a empty AAAA msg when ipv6 disabled
 		if !resolver.ipv6 && q.Qtype == D.TypeAAAA {
-			msg := &D.Msg{}
+			return handleMsgWithEmptyAnswer(r), nil
-			msg.Answer = []D.RR{}
-
-			msg.SetRcode(r, D.RcodeSuccess)
-			msg.Authoritative = true
-			msg.RecursionAvailable = true
-
-			return msg, nil
 		}
 
 		msg, err := resolver.Exchange(r)

dns/util.go

@@ -142,3 +142,14 @@ func transform(servers []NameServer, resolver *Resolver) []dnsClient {
 	}
 	return ret
 }
+
+func handleMsgWithEmptyAnswer(r *D.Msg) *D.Msg {
+	msg := &D.Msg{}
+	msg.Answer = []D.RR{}
+
+	msg.SetRcode(r, D.RcodeSuccess)
+	msg.Authoritative = true
+	msg.RecursionAvailable = true
+
+	return msg
+}

go.mod

@@ -1,23 +1,22 @@
 module github.com/Dreamacro/clash
 
-go 1.14
+go 1.15
 
 require (
 	github.com/Dreamacro/go-shadowsocks2 v0.1.6
-	github.com/eapache/queue v1.1.0 // indirect
 	github.com/go-chi/chi v4.1.2+incompatible
 	github.com/go-chi/cors v1.1.1
 	github.com/go-chi/render v1.0.1
 	github.com/gofrs/uuid v3.3.0+incompatible
 	github.com/gorilla/websocket v1.4.2
-	github.com/miekg/dns v1.1.31
+	github.com/miekg/dns v1.1.35
 	github.com/oschwald/geoip2-golang v1.4.0
-	github.com/sirupsen/logrus v1.6.0
+	github.com/sirupsen/logrus v1.7.0
 	github.com/stretchr/testify v1.6.1
-	golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de
+	go.uber.org/atomic v1.7.0
-	golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc
+	golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9
-	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
+	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b
-	golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed
+	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
-	gopkg.in/eapache/channels.v1 v1.1.0
+	golang.org/x/sys v0.0.0-20201119102817-f84b799fce68
 	gopkg.in/yaml.v2 v2.3.0
 )

go.sum

@@ -3,8 +3,6 @@ github.com/Dreamacro/go-shadowsocks2 v0.1.6/go.mod h1:LSXCjyHesPY3pLjhwff1mQX72I
 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/eapache/queue v1.1.0 h1:YOEu7KNc61ntiQlcEeUIoDTJ2o8mQznoNvUhiigpIqc=
-github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
 github.com/go-chi/chi v4.1.2+incompatible h1:fGFk2Gmi/YKXk0OmGfBh0WgmN3XB8lVnEyNz34tQRec=
 github.com/go-chi/chi v4.1.2+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
 github.com/go-chi/cors v1.1.1 h1:eHuqxsIw89iXcWnWUN8R72JMibABJTN/4IOYI5WERvw=
@@ -15,54 +13,57 @@ github.com/gofrs/uuid v3.3.0+incompatible h1:8K4tyRfvU1CYPgJsveYFQMhpFd/wXNM7iK6
 github.com/gofrs/uuid v3.3.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 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/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
+github.com/miekg/dns v1.1.35 h1:oTfOaDH+mZkdcgdIjH6yBajRGtIwcwcaR+rt23ZSrJs=
-github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/miekg/dns v1.1.35/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
-github.com/miekg/dns v1.1.31 h1:sJFOl9BgwbYAWOGEwr61FU28pqsBNdpRBnhGXtO06Oo=
-github.com/miekg/dns v1.1.31/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/oschwald/geoip2-golang v1.4.0 h1:5RlrjCgRyIGDz/mBmPfnAF4h8k0IAcRv9PvrpOfz+Ug=
 github.com/oschwald/geoip2-golang v1.4.0/go.mod h1:8QwxJvRImBH+Zl6Aa6MaIcs5YdlZSTKtzmPGzQqi9ng=
 github.com/oschwald/maxminddb-golang v1.6.0 h1:KAJSjdHQ8Kv45nFIbtoLGrGWqHFajOIm7skTyz/+Dls=
 github.com/oschwald/maxminddb-golang v1.6.0/go.mod h1:DUJFucBg2cvqx42YmDa/+xHvb0elJtOm3o4aFQ/nb/w=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
+github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
-github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
+github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 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 v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
+go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de h1:ikNHVSjEfnvz6sxdSPCaPt572qowuyMDMJLLm3Db3ig=
+golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9 h1:phUcVbl53swtrUN8kQEXFhUxPlIlWyBfKmidCu7P95o=
-golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc h1:zK/HqS5bZxDptfPJNq8v7vJfXtkU7r9TLIoSr1bXaP4=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b h1:uwuIcX0g4Yl1NC5XAz37xsr2lTtcqevgzYNVt49waME=
-golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 h1:qwRHBd0NqMbJxfbotnDhm2ByMI1Shq4Y6oRJo21SGJA=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9 h1:SQFwaSi55rU7vdNs9Yr0Z324VNlrF+0wMqRXT4St8ck=
-golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191224085550-c709ea063b76/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed h1:J22ig1FUekjjkmZUM7pTKixYm8DvrYsvrBZdunYeIuQ=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 h1:nxC68pudNYkKU6jWhgrqdreuFiOQWj1Fs7T3VrH4Pjw=
-golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/eapache/channels.v1 v1.1.0 h1:5bGAyKKvyCTWjSj7mhefG6Lc68VyN4MH1v8/7OoeeB4=
-gopkg.in/eapache/channels.v1 v1.1.0/go.mod h1:BHIBujSvu9yMTrTYbTCjDD43gUhtmaOtTWDe7sTv1js=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

hub/executor/executor.go

@@ -86,6 +86,7 @@ func GetGeneral() *config.General {
 			Port:           ports.Port,
 			SocksPort:      ports.SocksPort,
 			RedirPort:      ports.RedirPort,
+			TProxyPort:     ports.TProxyPort,
 			MixedPort:      ports.MixedPort,
 			Authentication: authenticator,
 			AllowLan:       P.AllowLan(),
@@ -191,6 +192,10 @@ func updateGeneral(general *config.General, force bool) {
 		log.Errorln("Start Redir server error: %s", err.Error())
 	}
 
+	if err := P.ReCreateTProxy(general.TProxyPort); err != nil {
+		log.Errorln("Start TProxy server error: %s", err.Error())
+	}
+
 	if err := P.ReCreateMixed(general.MixedPort); err != nil {
 		log.Errorln("Start Mixed(http and socks5) server error: %s", err.Error())
 	}

hub/route/configs.go

@@ -26,6 +26,7 @@ type configSchema struct {
 	Port        *int               `json:"port"`
 	SocksPort   *int               `json:"socks-port"`
 	RedirPort   *int               `json:"redir-port"`
+	TProxyPort  *int               `json:"tproxy-port"`
 	MixedPort   *int               `json:"mixed-port"`
 	AllowLan    *bool              `json:"allow-lan"`
 	BindAddress *string            `json:"bind-address"`
@@ -66,6 +67,7 @@ func patchConfigs(w http.ResponseWriter, r *http.Request) {
 	P.ReCreateHTTP(pointerOrDefault(general.Port, ports.Port))
 	P.ReCreateSocks(pointerOrDefault(general.SocksPort, ports.SocksPort))
 	P.ReCreateRedir(pointerOrDefault(general.RedirPort, ports.RedirPort))
+	P.ReCreateTProxy(pointerOrDefault(general.TProxyPort, ports.TProxyPort))
 	P.ReCreateMixed(pointerOrDefault(general.MixedPort, ports.MixedPort))
 
 	if general.Mode != nil {
@@ -106,7 +108,7 @@ func updateConfigs(w http.ResponseWriter, r *http.Request) {
 	} else {
 		if !filepath.IsAbs(req.Path) {
 			render.Status(r, http.StatusBadRequest)
-			render.JSON(w, r, newError("path is not a absoluted path"))
+			render.JSON(w, r, newError("path is not a absolute path"))
 			return
 		}
 

proxy/listener.go

@@ -17,26 +17,30 @@ var (
 	allowLan    = false
 	bindAddress = "*"
 
-	socksListener    *socks.SockListener
+	socksListener     *socks.SockListener
-	socksUDPListener *socks.SockUDPListener
+	socksUDPListener  *socks.SockUDPListener
-	httpListener     *http.HttpListener
+	httpListener      *http.HttpListener
-	redirListener    *redir.RedirListener
+	redirListener     *redir.RedirListener
-	redirUDPListener *redir.RedirUDPListener
+	redirUDPListener  *redir.RedirUDPListener
-	mixedListener    *mixed.MixedListener
+	tproxyListener    *redir.TProxyListener
-	mixedUDPLister   *socks.SockUDPListener
+	tproxyUDPListener *redir.RedirUDPListener
+	mixedListener     *mixed.MixedListener
+	mixedUDPLister    *socks.SockUDPListener
 
 	// lock for recreate function
-	socksMux sync.Mutex
+	socksMux  sync.Mutex
-	httpMux  sync.Mutex
+	httpMux   sync.Mutex
-	redirMux sync.Mutex
+	redirMux  sync.Mutex
-	mixedMux sync.Mutex
+	tproxyMux sync.Mutex
+	mixedMux  sync.Mutex
 )
 
 type Ports struct {
-	Port      int `json:"port"`
+	Port       int `json:"port"`
-	SocksPort int `json:"socks-port"`
+	SocksPort  int `json:"socks-port"`
-	RedirPort int `json:"redir-port"`
+	RedirPort  int `json:"redir-port"`
-	MixedPort int `json:"mixed-port"`
+	TProxyPort int `json:"tproxy-port"`
+	MixedPort  int `json:"mixed-port"`
 }
 
 func AllowLan() bool {
@@ -174,6 +178,46 @@ func ReCreateRedir(port int) error {
 	return nil
 }
 
+func ReCreateTProxy(port int) error {
+	tproxyMux.Lock()
+	defer tproxyMux.Unlock()
+
+	addr := genAddr(bindAddress, port, allowLan)
+
+	if tproxyListener != nil {
+		if tproxyListener.Address() == addr {
+			return nil
+		}
+		tproxyListener.Close()
+		tproxyListener = nil
+	}
+
+	if tproxyUDPListener != nil {
+		if tproxyUDPListener.Address() == addr {
+			return nil
+		}
+		tproxyUDPListener.Close()
+		tproxyUDPListener = nil
+	}
+
+	if portIsZero(addr) {
+		return nil
+	}
+
+	var err error
+	tproxyListener, err = redir.NewTProxy(addr)
+	if err != nil {
+		return err
+	}
+
+	tproxyUDPListener, err = redir.NewRedirUDPProxy(addr)
+	if err != nil {
+		log.Warnln("Failed to start TProxy UDP Listener: %s", err)
+	}
+
+	return nil
+}
+
 func ReCreateMixed(port int) error {
 	mixedMux.Lock()
 	defer mixedMux.Unlock()
@@ -245,6 +289,12 @@ func GetPorts() *Ports {
 		ports.RedirPort = port
 	}
 
+	if tproxyListener != nil {
+		_, portStr, _ := net.SplitHostPort(tproxyListener.Address())
+		port, _ := strconv.Atoi(portStr)
+		ports.TProxyPort = port
+	}
+
 	if mixedListener != nil {
 		_, portStr, _ := net.SplitHostPort(mixedListener.Address())
 		port, _ := strconv.Atoi(portStr)

proxy/redir/tproxy.go

@@ -0,0 +1,71 @@
+package redir
+
+import (
+	"net"
+
+	"github.com/Dreamacro/clash/adapters/inbound"
+	"github.com/Dreamacro/clash/component/socks5"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+	"github.com/Dreamacro/clash/tunnel"
+)
+
+type TProxyListener struct {
+	net.Listener
+	address string
+	closed  bool
+}
+
+func NewTProxy(addr string) (*TProxyListener, error) {
+	l, err := net.Listen("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+
+	tl := l.(*net.TCPListener)
+	rc, err := tl.SyscallConn()
+	if err != nil {
+		return nil, err
+	}
+
+	err = setsockopt(rc, addr)
+	if err != nil {
+		return nil, err
+	}
+
+	rl := &TProxyListener{
+		Listener: l,
+		address:  addr,
+	}
+
+	go func() {
+		log.Infoln("TProxy server listening at: %s", addr)
+		for {
+			c, err := l.Accept()
+			if err != nil {
+				if rl.closed {
+					break
+				}
+				continue
+			}
+			go rl.handleRedir(c)
+		}
+	}()
+
+	return rl, nil
+}
+
+func (l *TProxyListener) Close() {
+	l.closed = true
+	l.Listener.Close()
+}
+
+func (l *TProxyListener) Address() string {
+	return l.address
+}
+
+func (l *TProxyListener) handleRedir(conn net.Conn) {
+	target := socks5.ParseAddrToSocksAddr(conn.LocalAddr())
+	conn.(*net.TCPConn).SetKeepAlive(true)
+	tunnel.Add(inbound.NewSocket(target, conn, C.TPROXY))
+}

proxy/redir/tproxy_linux.go

@@ -0,0 +1,40 @@
+// +build linux
+
+package redir
+
+import (
+	"net"
+	"syscall"
+)
+
+func setsockopt(rc syscall.RawConn, addr string) error {
+	isIPv6 := true
+	host, _, err := net.SplitHostPort(addr)
+	if err != nil {
+		return err
+	}
+	ip := net.ParseIP(host)
+	if ip != nil && ip.To4() != nil {
+		isIPv6 = false
+	}
+
+	rc.Control(func(fd uintptr) {
+		err = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
+
+		if err == nil {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_TRANSPARENT, 1)
+		}
+		if err == nil && isIPv6 {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, IPV6_TRANSPARENT, 1)
+		}
+
+		if err == nil {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_RECVORIGDSTADDR, 1)
+		}
+		if err == nil && isIPv6 {
+			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, IPV6_RECVORIGDSTADDR, 1)
+		}
+	})
+
+	return err
+}

proxy/redir/tproxy_other.go

@@ -0,0 +1,12 @@
+// +build !linux
+
+package redir
+
+import (
+	"errors"
+	"syscall"
+)
+
+func setsockopt(rc syscall.RawConn, addr string) error {
+	return errors.New("not supported on current platform")
+}

proxy/redir/udp.go

@@ -26,7 +26,12 @@ func NewRedirUDPProxy(addr string) (*RedirUDPListener, error) {
 
 	c := l.(*net.UDPConn)
 
-	err = setsockopt(c, addr)
+	rc, err := c.SyscallConn()
+	if err != nil {
+		return nil, err
+	}
+
+	err = setsockopt(rc, addr)
 	if err != nil {
 		return nil, err
 	}

proxy/redir/udp_linux.go

@@ -14,43 +14,6 @@ const (
 	IPV6_RECVORIGDSTADDR = 0x4a
 )
 
-func setsockopt(c *net.UDPConn, addr string) error {
-	isIPv6 := true
-	host, _, err := net.SplitHostPort(addr)
-	if err != nil {
-		return err
-	}
-	ip := net.ParseIP(host)
-	if ip != nil && ip.To4() != nil {
-		isIPv6 = false
-	}
-
-	rc, err := c.SyscallConn()
-	if err != nil {
-		return err
-	}
-
-	rc.Control(func(fd uintptr) {
-		err = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
-
-		if err == nil {
-			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_TRANSPARENT, 1)
-		}
-		if err == nil && isIPv6 {
-			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, IPV6_TRANSPARENT, 1)
-		}
-
-		if err == nil {
-			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_RECVORIGDSTADDR, 1)
-		}
-		if err == nil && isIPv6 {
-			err = syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, IPV6_RECVORIGDSTADDR, 1)
-		}
-	})
-
-	return err
-}
-
 func getOrigDst(oob []byte, oobn int) (*net.UDPAddr, error) {
 	msgs, err := syscall.ParseSocketControlMessage(oob[:oobn])
 	if err != nil {

proxy/redir/udp_other.go

@@ -7,10 +7,6 @@ import (
 	"net"
 )
 
-func setsockopt(c *net.UDPConn, addr string) error {
-	return errors.New("UDP redir not supported on current platform")
-}
-
 func getOrigDst(oob []byte, oobn int) (*net.UDPAddr, error) {
 	return nil, errors.New("UDP redir not supported on current platform")
 }

proxy/redir/utils.go

@@ -15,7 +15,7 @@ func (c *packet) Data() []byte {
 	return c.buf
 }
 
-// WriteBack opens a new socket binding `addr` to wirte UDP packet back
+// WriteBack opens a new socket binding `addr` to write UDP packet back
 func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
 	tc, err := dialUDP("udp", addr.(*net.UDPAddr), c.lAddr)
 	if err != nil {

proxy/socks/utils.go

@@ -18,7 +18,7 @@ func (c *packet) Data() []byte {
 	return c.payload
 }
 
-// WriteBack wirtes UDP packet with source(ip, port) = `addr`
+// WriteBack write UDP packet with source(ip, port) = `addr`
 func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
 	packet, err := socks5.EncodeUDPPacket(socks5.ParseAddrToSocksAddr(addr), b)
 	if err != nil {

tunnel/manager.go

@@ -2,26 +2,34 @@ package tunnel
 
 import (
 	"sync"
-	"sync/atomic"
 	"time"
+
+	"go.uber.org/atomic"
 )
 
 var DefaultManager *Manager
 
 func init() {
-	DefaultManager = &Manager{}
+	DefaultManager = &Manager{
+		uploadTemp:    atomic.NewInt64(0),
+		downloadTemp:  atomic.NewInt64(0),
+		uploadBlip:    atomic.NewInt64(0),
+		downloadBlip:  atomic.NewInt64(0),
+		uploadTotal:   atomic.NewInt64(0),
+		downloadTotal: atomic.NewInt64(0),
+	}
 
 	go DefaultManager.handle()
 }
 
 type Manager struct {
 	connections   sync.Map
-	uploadTemp    int64
+	uploadTemp    *atomic.Int64
-	downloadTemp  int64
+	downloadTemp  *atomic.Int64
-	uploadBlip    int64
+	uploadBlip    *atomic.Int64
-	downloadBlip  int64
+	downloadBlip  *atomic.Int64
-	uploadTotal   int64
+	uploadTotal   *atomic.Int64
-	downloadTotal int64
+	downloadTotal *atomic.Int64
 }
 
 func (m *Manager) Join(c tracker) {
@@ -33,17 +41,17 @@ func (m *Manager) Leave(c tracker) {
 }
 
 func (m *Manager) PushUploaded(size int64) {
-	atomic.AddInt64(&m.uploadTemp, size)
+	m.uploadTemp.Add(size)
-	atomic.AddInt64(&m.uploadTotal, size)
+	m.uploadTotal.Add(size)
 }
 
 func (m *Manager) PushDownloaded(size int64) {
-	atomic.AddInt64(&m.downloadTemp, size)
+	m.downloadTemp.Add(size)
-	atomic.AddInt64(&m.downloadTotal, size)
+	m.downloadTotal.Add(size)
 }
 
 func (m *Manager) Now() (up int64, down int64) {
-	return atomic.LoadInt64(&m.uploadBlip), atomic.LoadInt64(&m.downloadBlip)
+	return m.uploadBlip.Load(), m.downloadBlip.Load()
 }
 
 func (m *Manager) Snapshot() *Snapshot {
@@ -54,29 +62,29 @@ func (m *Manager) Snapshot() *Snapshot {
 	})
 
 	return &Snapshot{
-		UploadTotal:   atomic.LoadInt64(&m.uploadTotal),
+		UploadTotal:   m.uploadTotal.Load(),
-		DownloadTotal: atomic.LoadInt64(&m.downloadTotal),
+		DownloadTotal: m.downloadTotal.Load(),
 		Connections:   connections,
 	}
 }
 
 func (m *Manager) ResetStatistic() {
-	m.uploadTemp = 0
+	m.uploadTemp.Store(0)
-	m.uploadBlip = 0
+	m.uploadBlip.Store(0)
-	m.uploadTotal = 0
+	m.uploadTotal.Store(0)
-	m.downloadTemp = 0
+	m.downloadTemp.Store(0)
-	m.downloadBlip = 0
+	m.downloadBlip.Store(0)
-	m.downloadTotal = 0
+	m.downloadTotal.Store(0)
 }
 
 func (m *Manager) handle() {
 	ticker := time.NewTicker(time.Second)
 
 	for range ticker.C {
-		atomic.StoreInt64(&m.uploadBlip, atomic.LoadInt64(&m.uploadTemp))
+		m.uploadBlip.Store(m.uploadTemp.Load())
-		atomic.StoreInt64(&m.uploadTemp, 0)
+		m.uploadTemp.Store(0)
-		atomic.StoreInt64(&m.downloadBlip, atomic.LoadInt64(&m.downloadTemp))
+		m.downloadBlip.Store(m.downloadTemp.Load())
-		atomic.StoreInt64(&m.downloadTemp, 0)
+		m.downloadTemp.Store(0)
 	}
 }
 

tunnel/tracker.go

@@ -5,7 +5,9 @@ import (
 	"time"
 
 	C "github.com/Dreamacro/clash/constant"
+
 	"github.com/gofrs/uuid"
+	"go.uber.org/atomic"
 )
 
 type tracker interface {
@@ -14,14 +16,14 @@ type tracker interface {
 }
 
 type trackerInfo struct {
-	UUID          uuid.UUID   `json:"id"`
+	UUID          uuid.UUID     `json:"id"`
-	Metadata      *C.Metadata `json:"metadata"`
+	Metadata      *C.Metadata   `json:"metadata"`
-	UploadTotal   int64       `json:"upload"`
+	UploadTotal   *atomic.Int64 `json:"upload"`
-	DownloadTotal int64       `json:"download"`
+	DownloadTotal *atomic.Int64 `json:"download"`
-	Start         time.Time   `json:"start"`
+	Start         time.Time     `json:"start"`
-	Chain         C.Chain     `json:"chains"`
+	Chain         C.Chain       `json:"chains"`
-	Rule          string      `json:"rule"`
+	Rule          string        `json:"rule"`
-	RulePayload   string      `json:"rulePayload"`
+	RulePayload   string        `json:"rulePayload"`
 }
 
 type tcpTracker struct {
@@ -38,7 +40,7 @@ func (tt *tcpTracker) Read(b []byte) (int, error) {
 	n, err := tt.Conn.Read(b)
 	download := int64(n)
 	tt.manager.PushDownloaded(download)
-	tt.DownloadTotal += download
+	tt.DownloadTotal.Add(download)
 	return n, err
 }
 
@@ -46,7 +48,7 @@ func (tt *tcpTracker) Write(b []byte) (int, error) {
 	n, err := tt.Conn.Write(b)
 	upload := int64(n)
 	tt.manager.PushUploaded(upload)
-	tt.UploadTotal += upload
+	tt.UploadTotal.Add(upload)
 	return n, err
 }
 
@@ -62,11 +64,13 @@ func newTCPTracker(conn C.Conn, manager *Manager, metadata *C.Metadata, rule C.R
 		Conn:    conn,
 		manager: manager,
 		trackerInfo: &trackerInfo{
-			UUID:     uuid,
+			UUID:          uuid,
-			Start:    time.Now(),
+			Start:         time.Now(),
-			Metadata: metadata,
+			Metadata:      metadata,
-			Chain:    conn.Chains(),
+			Chain:         conn.Chains(),
-			Rule:     "",
+			Rule:          "",
+			UploadTotal:   atomic.NewInt64(0),
+			DownloadTotal: atomic.NewInt64(0),
 		},
 	}
 
@@ -93,7 +97,7 @@ func (ut *udpTracker) ReadFrom(b []byte) (int, net.Addr, error) {
 	n, addr, err := ut.PacketConn.ReadFrom(b)
 	download := int64(n)
 	ut.manager.PushDownloaded(download)
-	ut.DownloadTotal += download
+	ut.DownloadTotal.Add(download)
 	return n, addr, err
 }
 
@@ -101,7 +105,7 @@ func (ut *udpTracker) WriteTo(b []byte, addr net.Addr) (int, error) {
 	n, err := ut.PacketConn.WriteTo(b, addr)
 	upload := int64(n)
 	ut.manager.PushUploaded(upload)
-	ut.UploadTotal += upload
+	ut.UploadTotal.Add(upload)
 	return n, err
 }
 
@@ -117,11 +121,13 @@ func newUDPTracker(conn C.PacketConn, manager *Manager, metadata *C.Metadata, ru
 		PacketConn: conn,
 		manager:    manager,
 		trackerInfo: &trackerInfo{
-			UUID:     uuid,
+			UUID:          uuid,
-			Start:    time.Now(),
+			Start:         time.Now(),
-			Metadata: metadata,
+			Metadata:      metadata,
-			Chain:    conn.Chains(),
+			Chain:         conn.Chains(),
-			Rule:     "",
+			Rule:          "",
+			UploadTotal:   atomic.NewInt64(0),
+			DownloadTotal: atomic.NewInt64(0),
 		},
 	}
 

tunnel/tunnel.go

@@ -13,13 +13,11 @@ import (
 	"github.com/Dreamacro/clash/component/resolver"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/log"
-
-	channels "gopkg.in/eapache/channels.v1"
 )
 
 var (
-	tcpQueue  = channels.NewInfiniteChannel()
+	tcpQueue  = make(chan C.ServerAdapter, 200)
-	udpQueue  = channels.NewInfiniteChannel()
+	udpQueue  = make(chan *inbound.PacketAdapter, 200)
 	natTable  = nat.New()
 	rules     []C.Rule
 	proxies   = make(map[string]C.Proxy)
@@ -39,12 +37,15 @@ func init() {
 
 // Add request to queue
 func Add(req C.ServerAdapter) {
-	tcpQueue.In() <- req
+	tcpQueue <- req
 }
 
 // AddPacket add udp Packet to queue
 func AddPacket(packet *inbound.PacketAdapter) {
-	udpQueue.In() <- packet
+	select {
+	case udpQueue <- packet:
+	default:
+	}
 }
 
 // Rules return all rules
@@ -89,9 +90,8 @@ func SetMode(m TunnelMode) {
 
 // processUDP starts a loop to handle udp packet
 func processUDP() {
-	queue := udpQueue.Out()
+	queue := udpQueue
-	for elm := range queue {
+	for conn := range queue {
-		conn := elm.(*inbound.PacketAdapter)
 		handleUDPConn(conn)
 	}
 }
@@ -105,9 +105,8 @@ func process() {
 		go processUDP()
 	}
 
-	queue := tcpQueue.Out()
+	queue := tcpQueue
-	for elm := range queue {
+	for conn := range queue {
-		conn := elm.(C.ServerAdapter)
 		go handleTCPConn(conn)
 	}
 }
@@ -168,9 +167,9 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 		return
 	}
 
-	// make a fAddr if requset ip is fakeip
+	// make a fAddr if request ip is fakeip
 	var fAddr net.Addr
-	if resolver.IsFakeIP(metadata.DstIP) {
+	if resolver.IsExistFakeIP(metadata.DstIP) {
 		fAddr = metadata.UDPAddr()
 	}
 
@@ -180,57 +179,65 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 	}
 
 	key := packet.LocalAddr().String()
-	pc := natTable.Get(key)
+
-	if pc != nil {
+	handle := func() bool {
-		handleUDPToRemote(packet, pc, metadata)
+		pc := natTable.Get(key)
+		if pc != nil {
+			handleUDPToRemote(packet, pc, metadata)
+			return true
+		}
+		return false
+	}
+
+	if handle() {
 		return
 	}
 
 	lockKey := key + "-lock"
-	wg, loaded := natTable.GetOrCreateLock(lockKey)
+	cond, loaded := natTable.GetOrCreateLock(lockKey)
 
 	go func() {
-		if !loaded {
+		if loaded {
-			wg.Add(1)
+			cond.L.Lock()
-			proxy, rule, err := resolveMetadata(metadata)
+			cond.Wait()
-			if err != nil {
+			handle()
-				log.Warnln("[UDP] Parse metadata failed: %s", err.Error())
+			cond.L.Unlock()
-				natTable.Delete(lockKey)
+			return
-				wg.Done()
+		}
-				return
-			}
 
-			rawPc, err := proxy.DialUDP(metadata)
+		defer func() {
-			if err != nil {
-				log.Warnln("[UDP] dial %s error: %s", proxy.Name(), err.Error())
-				natTable.Delete(lockKey)
-				wg.Done()
-				return
-			}
-			pc = newUDPTracker(rawPc, DefaultManager, metadata, rule)
-
-			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())
-			case mode == Global:
-				log.Infoln("[UDP] %s --> %v using GLOBAL", metadata.SourceAddress(), metadata.String())
-			case mode == Direct:
-				log.Infoln("[UDP] %s --> %v using DIRECT", metadata.SourceAddress(), metadata.String())
-			default:
-				log.Infoln("[UDP] %s --> %v doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.String())
-			}
-
-			natTable.Set(key, pc)
 			natTable.Delete(lockKey)
-			wg.Done()
+			cond.Broadcast()
-			go handleUDPToLocal(packet.UDPPacket, pc, key, fAddr)
+		}()
+
+		proxy, rule, err := resolveMetadata(metadata)
+		if err != nil {
+			log.Warnln("[UDP] Parse metadata failed: %s", err.Error())
+			return
 		}
 
-		wg.Wait()
+		rawPc, err := proxy.DialUDP(metadata)
-		pc := natTable.Get(key)
+		if err != nil {
-		if pc != nil {
+			log.Warnln("[UDP] dial %s to %s error: %s", proxy.Name(), metadata.String(), err.Error())
-			handleUDPToRemote(packet, pc, metadata)
+			return
 		}
+		pc := newUDPTracker(rawPc, DefaultManager, metadata, rule)
+
+		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())
+		case mode == Global:
+			log.Infoln("[UDP] %s --> %v using GLOBAL", metadata.SourceAddress(), metadata.String())
+		case mode == Direct:
+			log.Infoln("[UDP] %s --> %v using DIRECT", metadata.SourceAddress(), metadata.String())
+		default:
+			log.Infoln("[UDP] %s --> %v doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.String())
+		}
+
+		go handleUDPToLocal(packet.UDPPacket, pc, key, fAddr)
+
+		natTable.Set(key, pc)
+		handle()
 	}()
 }
 
@@ -250,13 +257,13 @@ func handleTCPConn(localConn C.ServerAdapter) {
 
 	proxy, rule, err := resolveMetadata(metadata)
 	if err != nil {
-		log.Warnln("Parse metadata failed: %v", err)
+		log.Warnln("[Metadata] parse failed: %s", err.Error())
 		return
 	}
 
 	remoteConn, err := proxy.Dial(metadata)
 	if err != nil {
-		log.Warnln("dial %s error: %s", proxy.Name(), err.Error())
+		log.Warnln("dial %s to %s error: %s", proxy.Name(), metadata.String(), err.Error())
 		return
 	}
 	remoteConn = newTCPTracker(remoteConn, DefaultManager, metadata, rule)