Chore: update dependencies

Co-authored-by: fish <fish@youme.im>

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,30 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master, dev ]
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'go' ]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/docker.yml

@@ -17,37 +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@v2
+        uses: docker/setup-buildx-action@v1
         with:
-          buildx-version: latest
-          skip-cache: false
-          qemu-version: latest
+          version: latest
 
-      - name: Docker login
-        env:
-          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
-          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
-        run: |
-          echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
       
-      - name: Docker buildx image and push on dev branch
-        if: github.ref == 'refs/heads/dev'
-        run: |
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:dev .
+      - name: Login to Github Package
+        uses: docker/login-action@v1
+        with:
+          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@v1
-        id: version
+        uses: actions/github-script@v3
+        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: |
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:${{steps.version.outputs.result}} .
-          docker buildx build --output "type=image,push=true" --platform=linux/amd64,linux/arm/v7,linux/arm64 --tag dreamacro/clash:latest .
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          push: true
+          tags: ${{steps.tags.outputs.result}}

.github/workflows/go.yml

@@ -9,7 +9,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15.x
+          go-version: 1.16
 
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
@@ -22,9 +22,12 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
 
-      - name: Get dependencies and run test
+      - name: Get dependencies, run test and static check
         run: |
           go test ./...
+          go vet ./...
+          go install honnef.co/go/tools/cmd/staticcheck@latest
+          staticcheck -- $(go list ./...)
 
       - name: Build
         if: startsWith(github.ref, 'refs/tags/')
@@ -41,4 +44,3 @@ jobs:
         with:
           files: bin/*
           draft: true
-          prerelease: true

.github/workflows/stale.yml

@@ -11,9 +11,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/stale@v1
+      - 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'
-          days-before-stale: 120
+          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

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/

Makefile

@@ -4,10 +4,11 @@ VERSION=$(shell git describe --tags || echo "unknown version")
 BUILDTIME=$(shell date -u)
 GOBUILD=CGO_ENABLED=0 go build -trimpath -ldflags '-X "github.com/Dreamacro/clash/constant.Version=$(VERSION)" \
 		-X "github.com/Dreamacro/clash/constant.BuildTime=$(BUILDTIME)" \
-		-w -s'
+		-w -s -buildid='
 
 PLATFORM_LIST = \
 	darwin-amd64 \
+	darwin-arm64 \
 	linux-386 \
 	linux-amd64 \
 	linux-armv5 \
@@ -21,11 +22,13 @@ PLATFORM_LIST = \
 	linux-mips64 \
 	linux-mips64le \
 	freebsd-386 \
-	freebsd-amd64
+	freebsd-amd64 \
+	freebsd-arm64
 
 WINDOWS_ARCH_LIST = \
 	windows-386 \
-	windows-amd64
+	windows-amd64 \
+	windows-arm32v7
 
 all: linux-amd64 darwin-amd64 windows-amd64 # Most used
 
@@ -35,6 +38,9 @@ docker:
 darwin-amd64:
 	GOARCH=amd64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
+darwin-arm64:
+	GOARCH=arm64 GOOS=darwin $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
 linux-386:
 	GOARCH=386 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
@@ -77,11 +83,17 @@ freebsd-386:
 freebsd-amd64:
 	GOARCH=amd64 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
 
+freebsd-arm64:
+	GOARCH=arm64 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
+
 windows-386:
 	GOARCH=386 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
 
 windows-amd64:
 	GOARCH=amd64 GOOS=windows $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
+	
+windows-arm32v7:
+	GOARCH=arm GOOS=windows GOARM=7 $(GOBUILD) -o $(BINDIR)/$(NAME)-$@.exe
 
 gz_releases=$(addsuffix .gz, $(PLATFORM_LIST))
 zip_releases=$(addsuffix .zip, $(WINDOWS_ARCH_LIST))

README.md

@@ -28,9 +28,21 @@
 - Netfilter TCP redirecting. Deploy Clash on your Internet gateway with `iptables`.
 - Comprehensive HTTP RESTful API controller
 
+## Premium Features
+
+- TUN mode on macOS, Linux and Windows. [Doc](https://github.com/Dreamacro/clash/wiki/premium-core-features#tun-device)
+- Match your tunnel by [Script](https://github.com/Dreamacro/clash/wiki/premium-core-features#script)
+- [Rule Provider](https://github.com/Dreamacro/clash/wiki/premium-core-features#rule-providers)
+
 ## Getting Started
 Documentations are now moved to [GitHub Wiki](https://github.com/Dreamacro/clash/wiki).
 
+## Premium Release
+[Release](https://github.com/Dreamacro/clash/releases/tag/premium)
+
+## Development
+If you want to build an application that uses clash as a library, check out the the [GitHub Wiki](https://github.com/Dreamacro/clash/wiki/use-clash-as-a-library)
+
 ## Credits
 
 * [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
@@ -48,4 +60,3 @@ This software is released under the GPL-3.0 license.
 - [x] Redir proxy
 - [x] UDP support
 - [x] Connection manager
-- [ ] ~~Event API~~

adapter/adapter.go

@@ -1,125 +1,48 @@
-package outbound
+package adapter
 
 import (
 	"context"
 	"encoding/json"
-	"errors"
+	"fmt"
 	"net"
 	"net/http"
-	"sync/atomic"
+	"net/url"
 	"time"
 
 	"github.com/Dreamacro/clash/common/queue"
 	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
 )
 
-var (
-	defaultURLTestTimeout = time.Second * 5
-)
-
-type Base struct {
-	name string
-	addr string
-	tp   C.AdapterType
-	udp  bool
-}
-
-func (b *Base) Name() string {
-	return b.name
-}
-
-func (b *Base) Type() C.AdapterType {
-	return b.tp
-}
-
-func (b *Base) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	return c, errors.New("no support")
-}
-
-func (b *Base) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	return nil, errors.New("no support")
-}
-
-func (b *Base) SupportUDP() bool {
-	return b.udp
-}
-
-func (b *Base) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": b.Type().String(),
-	})
-}
-
-func (b *Base) Addr() string {
-	return b.addr
-}
-
-func (b *Base) Unwrap(metadata *C.Metadata) C.Proxy {
-	return nil
-}
-
-func NewBase(name string, addr string, tp C.AdapterType, udp bool) *Base {
-	return &Base{name, addr, tp, udp}
-}
-
-type conn struct {
-	net.Conn
-	chain C.Chain
-}
-
-func (c *conn) Chains() C.Chain {
-	return c.chain
-}
-
-func (c *conn) AppendToChains(a C.ProxyAdapter) {
-	c.chain = append(c.chain, a.Name())
-}
-
-func NewConn(c net.Conn, a C.ProxyAdapter) C.Conn {
-	return &conn{c, []string{a.Name()}}
-}
-
-type packetConn struct {
-	net.PacketConn
-	chain C.Chain
-}
-
-func (c *packetConn) Chains() C.Chain {
-	return c.chain
-}
-
-func (c *packetConn) AppendToChains(a C.ProxyAdapter) {
-	c.chain = append(c.chain, a.Name())
-}
-
-func newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
-	return &packetConn{pc, []string{a.Name()}}
-}
-
 type Proxy struct {
 	C.ProxyAdapter
 	history *queue.Queue
-	alive   uint32
+	alive   *atomic.Bool
 }
 
+// Alive implements C.Proxy
 func (p *Proxy) Alive() bool {
-	return atomic.LoadUint32(&p.alive) > 0
+	return p.alive.Load()
 }
 
+// Dial implements C.Proxy
 func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
 	defer cancel()
 	return p.DialContext(ctx, metadata)
 }
 
+// DialContext implements C.ProxyAdapter
 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
 }
 
+// DelayHistory implements C.Proxy
 func (p *Proxy) DelayHistory() []C.DelayHistory {
 	queue := p.history.Copy()
 	histories := []C.DelayHistory{}
@@ -130,9 +53,10 @@ func (p *Proxy) DelayHistory() []C.DelayHistory {
 }
 
 // LastDelay return last history record. if proxy is not alive, return the max value of uint16.
+// implements C.Proxy
 func (p *Proxy) LastDelay() (delay uint16) {
 	var max uint16 = 0xffff
-	if atomic.LoadUint32(&p.alive) == 0 {
+	if !p.alive.Load() {
 		return max
 	}
 
@@ -147,6 +71,7 @@ func (p *Proxy) LastDelay() (delay uint16) {
 	return history.Delay
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (p *Proxy) MarshalJSON() ([]byte, error) {
 	inner, err := p.ProxyAdapter.MarshalJSON()
 	if err != nil {
@@ -157,17 +82,15 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
 	json.Unmarshal(inner, &mapping)
 	mapping["history"] = p.DelayHistory()
 	mapping["name"] = p.Name()
+	mapping["udp"] = p.SupportUDP()
 	return json.Marshal(mapping)
 }
 
 // URLTest get the delay for the specified URL
+// implements C.Proxy
 func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
 	defer func() {
-		if err == nil {
-			atomic.StoreUint32(&p.alive, 1)
-		} else {
-			atomic.StoreUint32(&p.alive, 0)
-		}
+		p.alive.Store(err == nil)
 		record := C.DelayHistory{Time: time.Now()}
 		if err == nil {
 			record.Delay = t
@@ -223,5 +146,33 @@ 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)}
+}
+
+func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return
+	}
+
+	port := u.Port()
+	if port == "" {
+		switch u.Scheme {
+		case "https":
+			port = "443"
+		case "http":
+			port = "80"
+		default:
+			err = fmt.Errorf("%s scheme not Support", rawURL)
+			return
+		}
+	}
+
+	addr = C.Metadata{
+		AddrType: C.AtypDomainName,
+		Host:     u.Hostname(),
+		DstIP:    nil,
+		DstPort:  port,
+	}
+	return
 }

adapter/inbound/http.go

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

adapter/inbound/https.go

@@ -5,18 +5,16 @@ import (
 	"net/http"
 
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/context"
 )
 
-// NewHTTPS is HTTPAdapter generator
-func NewHTTPS(request *http.Request, conn net.Conn) *SocketAdapter {
+// NewHTTPS receive CONNECT request and return ConnContext
+func NewHTTPS(request *http.Request, conn net.Conn) *context.ConnContext {
 	metadata := parseHTTPAddr(request)
 	metadata.Type = C.HTTPCONNECT
 	if ip, port, err := parseAddr(conn.RemoteAddr().String()); err == nil {
 		metadata.SrcIP = ip
 		metadata.SrcPort = port
 	}
-	return &SocketAdapter{
-		metadata: metadata,
-		Conn:     conn,
-	}
+	return context.NewConnContext(conn, metadata)
 }

adapter/inbound/packet.go

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

adapter/inbound/socket.go

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

adapter/inbound/util.go

@@ -6,8 +6,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 func parseSocksAddr(target socks5.Addr) *C.Metadata {

adapter/outbound/base.go

@@ -0,0 +1,100 @@
+package outbound
+
+import (
+	"encoding/json"
+	"errors"
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Base struct {
+	name string
+	addr string
+	tp   C.AdapterType
+	udp  bool
+}
+
+// Name implements C.ProxyAdapter
+func (b *Base) Name() string {
+	return b.name
+}
+
+// Type implements C.ProxyAdapter
+func (b *Base) Type() C.AdapterType {
+	return b.tp
+}
+
+// StreamConn implements C.ProxyAdapter
+func (b *Base) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	return c, errors.New("no support")
+}
+
+// DialUDP implements C.ProxyAdapter
+func (b *Base) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
+	return nil, errors.New("no support")
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (b *Base) SupportUDP() bool {
+	return b.udp
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (b *Base) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]string{
+		"type": b.Type().String(),
+	})
+}
+
+// Addr implements C.ProxyAdapter
+func (b *Base) Addr() string {
+	return b.addr
+}
+
+// Unwrap implements C.ProxyAdapter
+func (b *Base) Unwrap(metadata *C.Metadata) C.Proxy {
+	return nil
+}
+
+func NewBase(name string, addr string, tp C.AdapterType, udp bool) *Base {
+	return &Base{name, addr, tp, udp}
+}
+
+type conn struct {
+	net.Conn
+	chain C.Chain
+}
+
+// Chains implements C.Connection
+func (c *conn) Chains() C.Chain {
+	return c.chain
+}
+
+// AppendToChains implements C.Connection
+func (c *conn) AppendToChains(a C.ProxyAdapter) {
+	c.chain = append(c.chain, a.Name())
+}
+
+func NewConn(c net.Conn, a C.ProxyAdapter) C.Conn {
+	return &conn{c, []string{a.Name()}}
+}
+
+type packetConn struct {
+	net.PacketConn
+	chain C.Chain
+}
+
+// Chains implements C.Connection
+func (c *packetConn) Chains() C.Chain {
+	return c.chain
+}
+
+// AppendToChains implements C.Connection
+func (c *packetConn) AppendToChains(a C.ProxyAdapter) {
+	c.chain = append(c.chain, a.Name())
+}
+
+func newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
+	return &packetConn{pc, []string{a.Name()}}
+}

adapter/outbound/direct.go

@@ -12,6 +12,7 @@ type Direct struct {
 	*Base
 }
 
+// DialContext implements C.ProxyAdapter
 func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
 	address := net.JoinHostPort(metadata.String(), metadata.DstPort)
 
@@ -23,6 +24,7 @@ func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 	return NewConn(c, d), nil
 }
 
+// DialUDP implements C.ProxyAdapter
 func (d *Direct) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	pc, err := dialer.ListenPacket("udp", "")
 	if err != nil {

adapter/outbound/http.go

@@ -31,9 +31,11 @@ type HttpOption struct {
 	UserName       string `proxy:"username,omitempty"`
 	Password       string `proxy:"password,omitempty"`
 	TLS            bool   `proxy:"tls,omitempty"`
+	SNI            string `proxy:"sni,omitempty"`
 	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (h *Http) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	if h.tlsConfig != nil {
 		cc := tls.Client(c, h.tlsConfig)
@@ -50,13 +52,16 @@ func (h *Http) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	return c, nil
 }
 
-func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
+// DialContext implements C.ProxyAdapter
+func (h *Http) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
 	c, err := dialer.DialContext(ctx, "tcp", h.addr)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", h.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = h.StreamConn(c, metadata)
 	if err != nil {
 		return nil, err
@@ -114,10 +119,13 @@ func (h *Http) shakeHand(metadata *C.Metadata, rw io.ReadWriter) error {
 func NewHttp(option HttpOption) *Http {
 	var tlsConfig *tls.Config
 	if option.TLS {
+		sni := option.Server
+		if option.SNI != "" {
+			sni = option.SNI
+		}
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
-			ServerName:         option.Server,
+			ServerName:         sni,
 		}
 	}
 

adapter/outbound/reject.go

@@ -14,10 +14,12 @@ type Reject struct {
 	*Base
 }
 
+// DialContext implements C.ProxyAdapter
 func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
 	return NewConn(&NopConn{}, r), nil
 }
 
+// DialUDP implements C.ProxyAdapter
 func (r *Reject) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	return nil, errors.New("match reject rule")
 }

adapter/outbound/shadowsocks.go

@@ -2,7 +2,6 @@ package outbound
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net"
@@ -10,10 +9,10 @@ import (
 
 	"github.com/Dreamacro/clash/common/structure"
 	"github.com/Dreamacro/clash/component/dialer"
-	obfs "github.com/Dreamacro/clash/component/simple-obfs"
-	"github.com/Dreamacro/clash/component/socks5"
-	v2rayObfs "github.com/Dreamacro/clash/component/v2ray-plugin"
 	C "github.com/Dreamacro/clash/constant"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	"github.com/Dreamacro/clash/transport/socks5"
+	v2rayObfs "github.com/Dreamacro/clash/transport/v2ray-plugin"
 
 	"github.com/Dreamacro/go-shadowsocks2/core"
 )
@@ -40,7 +39,7 @@ type ShadowSocksOption struct {
 }
 
 type simpleObfsOption struct {
-	Mode string `obfs:"mode"`
+	Mode string `obfs:"mode,omitempty"`
 	Host string `obfs:"host,omitempty"`
 }
 
@@ -54,6 +53,7 @@ type v2rayObfsOption struct {
 	Mux            bool              `obfs:"mux,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (ss *ShadowSocks) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	switch ss.obfsMode {
 	case "tls":
@@ -73,17 +73,21 @@ func (ss *ShadowSocks) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, e
 	return c, err
 }
 
-func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
+// DialContext implements C.ProxyAdapter
+func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
 	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = ss.StreamConn(c, metadata)
 	return NewConn(c, ss), err
 }
 
+// DialUDP implements C.ProxyAdapter
 func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	pc, err := dialer.ListenPacket("udp", "")
 	if err != nil {
@@ -92,6 +96,7 @@ func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 
 	addr, err := resolveUDPAddr("udp", ss.addr)
 	if err != nil {
+		pc.Close()
 		return nil, err
 	}
 
@@ -99,12 +104,6 @@ func (ss *ShadowSocks) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ss), nil
 }
 
-func (ss *ShadowSocks) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": ss.Type().String(),
-	})
-}
-
 func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
 	cipher := option.Cipher
@@ -150,7 +149,6 @@ func NewShadowSocks(option ShadowSocksOption) (*ShadowSocks, error) {
 		if opts.TLS {
 			v2rayOption.TLS = true
 			v2rayOption.SkipCertVerify = opts.SkipCertVerify
-			v2rayOption.SessionCache = getClientSessionCache()
 		}
 	}
 

adapter/outbound/shadowsocksr.go

@@ -2,22 +2,23 @@ package outbound
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"net"
 	"strconv"
 
 	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/ssr/obfs"
-	"github.com/Dreamacro/clash/component/ssr/protocol"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/ssr/obfs"
+	"github.com/Dreamacro/clash/transport/ssr/protocol"
+
 	"github.com/Dreamacro/go-shadowsocks2/core"
+	"github.com/Dreamacro/go-shadowsocks2/shadowaead"
 	"github.com/Dreamacro/go-shadowsocks2/shadowstream"
 )
 
 type ShadowSocksR struct {
 	*Base
-	cipher   *core.StreamCipher
+	cipher   core.Cipher
 	obfs     obfs.Obfs
 	protocol protocol.Protocol
 }
@@ -35,33 +36,43 @@ type ShadowSocksROption struct {
 	UDP           bool   `proxy:"udp,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (ssr *ShadowSocksR) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	c = obfs.NewConn(c, ssr.obfs)
+	c = ssr.obfs.StreamConn(c)
 	c = ssr.cipher.StreamConn(c)
-	conn, ok := c.(*shadowstream.Conn)
-	if !ok {
+	var (
+		iv  []byte
+		err error
+	)
+	switch conn := c.(type) {
+	case *shadowstream.Conn:
+		iv, err = conn.ObtainWriteIV()
+		if err != nil {
+			return nil, err
+		}
+	case *shadowaead.Conn:
 		return nil, fmt.Errorf("invalid connection type")
 	}
-	iv, err := conn.ObtainWriteIV()
-	if err != nil {
-		return nil, err
-	}
-	c = protocol.NewConn(c, ssr.protocol, iv)
+	c = ssr.protocol.StreamConn(c, iv)
 	_, err = c.Write(serializesSocksAddr(metadata))
 	return c, err
 }
 
-func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
+// DialContext implements C.ProxyAdapter
+func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
 	c, err := dialer.DialContext(ctx, "tcp", ssr.addr)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", ssr.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = ssr.StreamConn(c, metadata)
 	return NewConn(c, ssr), err
 }
 
+// DialUDP implements C.ProxyAdapter
 func (ssr *ShadowSocksR) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	pc, err := dialer.ListenPacket("udp", "")
 	if err != nil {
@@ -70,55 +81,58 @@ func (ssr *ShadowSocksR) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 
 	addr, err := resolveUDPAddr("udp", ssr.addr)
 	if err != nil {
+		pc.Close()
 		return nil, err
 	}
 
 	pc = ssr.cipher.PacketConn(pc)
-	pc = protocol.NewPacketConn(pc, ssr.protocol)
+	pc = ssr.protocol.PacketConn(pc)
 	return newPacketConn(&ssPacketConn{PacketConn: pc, rAddr: addr}, ssr), nil
 }
 
-func (ssr *ShadowSocksR) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": ssr.Type().String(),
-	})
-}
-
 func NewShadowSocksR(option ShadowSocksROption) (*ShadowSocksR, error) {
 	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
 	cipher := option.Cipher
 	password := option.Password
 	coreCiph, err := core.PickCipher(cipher, nil, password)
 	if err != nil {
-		return nil, fmt.Errorf("ssr %s initialize cipher error: %w", addr, err)
+		return nil, fmt.Errorf("ssr %s initialize error: %w", addr, err)
 	}
-	ciph, ok := coreCiph.(*core.StreamCipher)
-	if !ok {
-		return nil, fmt.Errorf("%s is not a supported stream cipher in ssr", cipher)
+	var (
+		ivSize int
+		key    []byte
+	)
+	if option.Cipher == "dummy" {
+		ivSize = 0
+		key = core.Kdf(option.Password, 16)
+	} else {
+		ciph, ok := coreCiph.(*core.StreamCipher)
+		if !ok {
+			return nil, fmt.Errorf("%s is not dummy or a supported stream cipher in ssr", cipher)
+		}
+		ivSize = ciph.IVSize()
+		key = ciph.Key
 	}
 
-	obfs, err := obfs.PickObfs(option.Obfs, &obfs.Base{
-		IVSize:  ciph.IVSize(),
-		Key:     ciph.Key,
-		HeadLen: 30,
-		Host:    option.Server,
-		Port:    option.Port,
-		Param:   option.ObfsParam,
+	obfs, obfsOverhead, err := obfs.PickObfs(option.Obfs, &obfs.Base{
+		Host:   option.Server,
+		Port:   option.Port,
+		Key:    key,
+		IVSize: ivSize,
+		Param:  option.ObfsParam,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("ssr %s initialize obfs error: %w", addr, err)
 	}
 
 	protocol, err := protocol.PickProtocol(option.Protocol, &protocol.Base{
-		IV:     nil,
-		Key:    ciph.Key,
-		TCPMss: 1460,
-		Param:  option.ProtocolParam,
+		Key:      key,
+		Overhead: obfsOverhead,
+		Param:    option.ProtocolParam,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("ssr %s initialize protocol error: %w", addr, err)
 	}
-	protocol.SetOverhead(obfs.GetObfsOverhead() + protocol.GetProtocolOverhead())
 
 	return &ShadowSocksR{
 		Base: &Base{
@@ -127,7 +141,7 @@ func NewShadowSocksR(option ShadowSocksROption) (*ShadowSocksR, error) {
 			tp:   C.ShadowsocksR,
 			udp:  option.UDP,
 		},
-		cipher:   ciph,
+		cipher:   coreCiph,
 		obfs:     obfs,
 		protocol: protocol,
 	}, nil

adapter/outbound/snell.go

@@ -0,0 +1,135 @@
+package outbound
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/Dreamacro/clash/common/structure"
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	obfs "github.com/Dreamacro/clash/transport/simple-obfs"
+	"github.com/Dreamacro/clash/transport/snell"
+)
+
+type Snell struct {
+	*Base
+	psk        []byte
+	pool       *snell.Pool
+	obfsOption *simpleObfsOption
+	version    int
+}
+
+type SnellOption struct {
+	Name     string                 `proxy:"name"`
+	Server   string                 `proxy:"server"`
+	Port     int                    `proxy:"port"`
+	Psk      string                 `proxy:"psk"`
+	Version  int                    `proxy:"version,omitempty"`
+	ObfsOpts map[string]interface{} `proxy:"obfs-opts,omitempty"`
+}
+
+type streamOption struct {
+	psk        []byte
+	version    int
+	addr       string
+	obfsOption *simpleObfsOption
+}
+
+func streamConn(c net.Conn, option streamOption) *snell.Snell {
+	switch option.obfsOption.Mode {
+	case "tls":
+		c = obfs.NewTLSObfs(c, option.obfsOption.Host)
+	case "http":
+		_, port, _ := net.SplitHostPort(option.addr)
+		c = obfs.NewHTTPObfs(c, option.obfsOption.Host, port)
+	}
+	return snell.StreamConn(c, option.psk, option.version)
+}
+
+// StreamConn implements C.ProxyAdapter
+func (s *Snell) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	c = streamConn(c, streamOption{s.psk, s.version, s.addr, s.obfsOption})
+	port, _ := strconv.Atoi(metadata.DstPort)
+	err := snell.WriteHeader(c, metadata.String(), uint(port), s.version)
+	return c, err
+}
+
+// DialContext implements C.ProxyAdapter
+func (s *Snell) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
+	if s.version == snell.Version2 {
+		c, err := s.pool.Get()
+		if err != nil {
+			return nil, err
+		}
+
+		port, _ := strconv.Atoi(metadata.DstPort)
+		if err = snell.WriteHeader(c, metadata.String(), uint(port), s.version); err != nil {
+			c.Close()
+			return nil, err
+		}
+		return NewConn(c, s), err
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", s.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", s.addr, err)
+	}
+	tcpKeepAlive(c)
+
+	defer safeConnClose(c, err)
+
+	c, err = s.StreamConn(c, metadata)
+	return NewConn(c, s), err
+}
+
+func NewSnell(option SnellOption) (*Snell, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+	psk := []byte(option.Psk)
+
+	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
+	obfsOption := &simpleObfsOption{Host: "bing.com"}
+	if err := decoder.Decode(option.ObfsOpts, obfsOption); err != nil {
+		return nil, fmt.Errorf("snell %s initialize obfs error: %w", addr, err)
+	}
+
+	switch obfsOption.Mode {
+	case "tls", "http", "":
+		break
+	default:
+		return nil, fmt.Errorf("snell %s obfs mode error: %s", addr, obfsOption.Mode)
+	}
+
+	// backward compatible
+	if option.Version == 0 {
+		option.Version = snell.DefaultSnellVersion
+	}
+	if option.Version != snell.Version1 && option.Version != snell.Version2 {
+		return nil, fmt.Errorf("snell version error: %d", option.Version)
+	}
+
+	s := &Snell{
+		Base: &Base{
+			name: option.Name,
+			addr: addr,
+			tp:   C.Snell,
+		},
+		psk:        psk,
+		obfsOption: obfsOption,
+		version:    option.Version,
+	}
+
+	if option.Version == snell.Version2 {
+		s.pool = snell.NewPool(func(ctx context.Context) (*snell.Snell, error) {
+			c, err := dialer.DialContext(ctx, "tcp", addr)
+			if err != nil {
+				return nil, err
+			}
+
+			tcpKeepAlive(c)
+			return streamConn(c, streamOption{psk, option.Version, addr, obfsOption}), nil
+		})
+	}
+	return s, nil
+}

adapter/outbound/socks5.go

@@ -11,8 +11,8 @@ import (
 	"strconv"
 
 	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
 type Socks5 struct {
@@ -35,6 +35,7 @@ type Socks5Option struct {
 	SkipCertVerify bool   `proxy:"skip-cert-verify,omitempty"`
 }
 
+// StreamConn implements C.ProxyAdapter
 func (ss *Socks5) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	if ss.tls {
 		cc := tls.Client(c, ss.tlsConfig)
@@ -58,13 +59,16 @@ func (ss *Socks5) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error)
 	return c, nil
 }
 
-func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
+// DialContext implements C.ProxyAdapter
+func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
 	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %w", ss.addr, err)
 	}
 	tcpKeepAlive(c)
 
+	defer safeConnClose(c, err)
+
 	c, err = ss.StreamConn(c, metadata)
 	if err != nil {
 		return nil, err
@@ -73,8 +77,9 @@ func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn
 	return NewConn(c, ss), nil
 }
 
+// DialUDP implements C.ProxyAdapter
 func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
 	defer cancel()
 	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
 	if err != nil {
@@ -88,11 +93,7 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		c = cc
 	}
 
-	defer func() {
-		if err != nil {
-			c.Close()
-		}
-	}()
+	defer safeConnClose(c, err)
 
 	tcpKeepAlive(c)
 	var user *socks5.User
@@ -122,7 +123,21 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		pc.Close()
 	}()
 
-	return newPacketConn(&socksPacketConn{PacketConn: pc, rAddr: bindAddr.UDPAddr(), tcpConn: c}, ss), nil
+	// Support unspecified UDP bind address.
+	bindUDPAddr := bindAddr.UDPAddr()
+	if bindUDPAddr == nil {
+		err = errors.New("invalid UDP bind address")
+		return
+	} else if bindUDPAddr.IP.IsUnspecified() {
+		serverAddr, err := resolveUDPAddr("udp", ss.Addr())
+		if err != nil {
+			return nil, err
+		}
+
+		bindUDPAddr.IP = serverAddr.IP
+	}
+
+	return newPacketConn(&socksPacketConn{PacketConn: pc, rAddr: bindUDPAddr, tcpConn: c}, ss), nil
 }
 
 func NewSocks5(option Socks5Option) *Socks5 {
@@ -130,7 +145,6 @@ func NewSocks5(option Socks5Option) *Socks5 {
 	if option.TLS {
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: option.SkipCertVerify,
-			ClientSessionCache: getClientSessionCache(),
 			ServerName:         option.Server,
 		}
 	}

adapter/outbound/trojan.go

@@ -0,0 +1,176 @@
+package outbound
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"strconv"
+
+	"github.com/Dreamacro/clash/component/dialer"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/trojan"
+
+	"golang.org/x/net/http2"
+)
+
+type Trojan struct {
+	*Base
+	instance *trojan.Trojan
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *http2.Transport
+}
+
+type TrojanOption struct {
+	Name           string      `proxy:"name"`
+	Server         string      `proxy:"server"`
+	Port           int         `proxy:"port"`
+	Password       string      `proxy:"password"`
+	ALPN           []string    `proxy:"alpn,omitempty"`
+	SNI            string      `proxy:"sni,omitempty"`
+	SkipCertVerify bool        `proxy:"skip-cert-verify,omitempty"`
+	UDP            bool        `proxy:"udp,omitempty"`
+	Network        string      `proxy:"network,omitempty"`
+	GrpcOpts       GrpcOptions `proxy:"grpc-opts,omitempty"`
+}
+
+// StreamConn implements C.ProxyAdapter
+func (t *Trojan) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
+	var err error
+	if t.transport != nil {
+		c, err = gun.StreamGunWithConn(c, t.gunTLSConfig, t.gunConfig)
+	} else {
+		c, err = t.instance.StreamConn(c)
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+
+	err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata))
+	return c, err
+}
+
+// DialContext implements C.ProxyAdapter
+func (t *Trojan) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
+	// gun transport
+	if t.transport != nil {
+		c, err := gun.StreamGunWithTransport(t.transport, t.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		if err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata)); err != nil {
+			c.Close()
+			return nil, err
+		}
+
+		return NewConn(c, t), nil
+	}
+
+	c, err := dialer.DialContext(ctx, "tcp", t.addr)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+	}
+	tcpKeepAlive(c)
+
+	defer safeConnClose(c, err)
+
+	c, err = t.StreamConn(c, metadata)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewConn(c, t), err
+}
+
+// DialUDP implements C.ProxyAdapter
+func (t *Trojan) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
+	var c net.Conn
+
+	// grpc transport
+	if t.transport != nil {
+		c, err = gun.StreamGunWithTransport(t.transport, t.gunConfig)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+		}
+		defer safeConnClose(c, err)
+	} else {
+		ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
+		defer cancel()
+		c, err = dialer.DialContext(ctx, "tcp", t.addr)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+		}
+		defer safeConnClose(c, err)
+		tcpKeepAlive(c)
+		c, err = t.instance.StreamConn(c)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
+		}
+	}
+
+	err = t.instance.WriteHeader(c, trojan.CommandUDP, serializesSocksAddr(metadata))
+	if err != nil {
+		return nil, err
+	}
+
+	pc := t.instance.PacketConn(c)
+	return newPacketConn(pc, t), err
+}
+
+func NewTrojan(option TrojanOption) (*Trojan, error) {
+	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
+
+	tOption := &trojan.Option{
+		Password:       option.Password,
+		ALPN:           option.ALPN,
+		ServerName:     option.Server,
+		SkipCertVerify: option.SkipCertVerify,
+	}
+
+	if option.SNI != "" {
+		tOption.ServerName = option.SNI
+	}
+
+	t := &Trojan{
+		Base: &Base{
+			name: option.Name,
+			addr: addr,
+			tp:   C.Trojan,
+			udp:  option.UDP,
+		},
+		instance: trojan.New(tOption),
+	}
+
+	if option.Network == "grpc" {
+		dialFn := func(network, addr string) (net.Conn, error) {
+			c, err := dialer.DialContext(context.Background(), "tcp", t.addr)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", t.addr, err.Error())
+			}
+			tcpKeepAlive(c)
+			return c, nil
+		}
+
+		tlsConfig := &tls.Config{
+			NextProtos:         option.ALPN,
+			MinVersion:         tls.VersionTLS12,
+			InsecureSkipVerify: tOption.SkipCertVerify,
+			ServerName:         tOption.ServerName,
+		}
+
+		t.transport = gun.NewHTTP2Client(dialFn, tlsConfig)
+		t.gunTLSConfig = tlsConfig
+		t.gunConfig = &gun.Config{
+			ServiceName: option.GrpcOpts.GrpcServiceName,
+			Host:        tOption.ServerName,
+		}
+	}
+
+	return t, nil
+}

adapter/outbound/util.go

@@ -2,56 +2,15 @@ package outbound
 
 import (
 	"bytes"
-	"crypto/tls"
-	"fmt"
 	"net"
-	"net/url"
 	"strconv"
-	"sync"
 	"time"
 
 	"github.com/Dreamacro/clash/component/resolver"
-	"github.com/Dreamacro/clash/component/socks5"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/socks5"
 )
 
-const (
-	tcpTimeout = 5 * time.Second
-)
-
-var (
-	globalClientSessionCache tls.ClientSessionCache
-	once                     sync.Once
-)
-
-func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
-	u, err := url.Parse(rawURL)
-	if err != nil {
-		return
-	}
-
-	port := u.Port()
-	if port == "" {
-		switch u.Scheme {
-		case "https":
-			port = "443"
-		case "http":
-			port = "80"
-		default:
-			err = fmt.Errorf("%s scheme not Support", rawURL)
-			return
-		}
-	}
-
-	addr = C.Metadata{
-		AddrType: C.AtypDomainName,
-		Host:     u.Hostname(),
-		DstIP:    nil,
-		DstPort:  port,
-	}
-	return
-}
-
 func tcpKeepAlive(c net.Conn) {
 	if tcp, ok := c.(*net.TCPConn); ok {
 		tcp.SetKeepAlive(true)
@@ -59,13 +18,6 @@ func tcpKeepAlive(c net.Conn) {
 	}
 }
 
-func getClientSessionCache() tls.ClientSessionCache {
-	once.Do(func() {
-		globalClientSessionCache = tls.NewLRUClientSessionCache(128)
-	})
-	return globalClientSessionCache
-}
-
 func serializesSocksAddr(metadata *C.Metadata) []byte {
 	var buf [][]byte
 	aType := uint8(metadata.AddrType)
@@ -98,3 +50,9 @@ func resolveUDPAddr(network, address string) (*net.UDPAddr, error) {
 	}
 	return net.ResolveUDPAddr(network, net.JoinHostPort(ip.String(), port))
 }
+
+func safeConnClose(c net.Conn, err error) {
+	if err != nil {
+		c.Close()
+	}
+}

adapter/outbound/vmess.go

@@ -2,6 +2,7 @@ package outbound
 
 import (
 	"context"
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"net"
@@ -11,14 +12,22 @@ import (
 
 	"github.com/Dreamacro/clash/component/dialer"
 	"github.com/Dreamacro/clash/component/resolver"
-	"github.com/Dreamacro/clash/component/vmess"
 	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/transport/gun"
+	"github.com/Dreamacro/clash/transport/vmess"
+
+	"golang.org/x/net/http2"
 )
 
 type Vmess struct {
 	*Base
 	client *vmess.Client
 	option *VmessOption
+
+	// for gun mux
+	gunTLSConfig *tls.Config
+	gunConfig    *gun.Config
+	transport    *http2.Transport
 }
 
 type VmessOption struct {
@@ -32,6 +41,8 @@ type VmessOption struct {
 	UDP            bool              `proxy:"udp,omitempty"`
 	Network        string            `proxy:"network,omitempty"`
 	HTTPOpts       HTTPOptions       `proxy:"http-opts,omitempty"`
+	HTTP2Opts      HTTP2Options      `proxy:"h2-opts,omitempty"`
+	GrpcOpts       GrpcOptions       `proxy:"grpc-opts,omitempty"`
 	WSPath         string            `proxy:"ws-path,omitempty"`
 	WSHeaders      map[string]string `proxy:"ws-headers,omitempty"`
 	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
@@ -44,6 +55,16 @@ type HTTPOptions struct {
 	Headers map[string][]string `proxy:"headers,omitempty"`
 }
 
+type HTTP2Options struct {
+	Host []string `proxy:"host,omitempty"`
+	Path string   `proxy:"path,omitempty"`
+}
+
+type GrpcOptions struct {
+	GrpcServiceName string `proxy:"grpc-service-name,omitempty"`
+}
+
+// StreamConn implements C.ProxyAdapter
 func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	var err error
 	switch v.option.Network {
@@ -65,12 +86,29 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 
 		if v.option.TLS {
 			wsOpts.TLS = true
-			wsOpts.SessionCache = getClientSessionCache()
 			wsOpts.SkipCertVerify = v.option.SkipCertVerify
 			wsOpts.ServerName = v.option.ServerName
 		}
 		c, err = vmess.StreamWebsocketConn(c, wsOpts)
 	case "http":
+		// readability first, so just copy default TLS logic
+		if v.option.TLS {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsOpts := &vmess.TLSConfig{
+				Host:           host,
+				SkipCertVerify: v.option.SkipCertVerify,
+			}
+
+			if v.option.ServerName != "" {
+				tlsOpts.Host = v.option.ServerName
+			}
+
+			c, err = vmess.StreamTLSConn(c, tlsOpts)
+			if err != nil {
+				return nil, err
+			}
+		}
+
 		host, _, _ := net.SplitHostPort(v.addr)
 		httpOpts := &vmess.HTTPConfig{
 			Host:    host,
@@ -80,6 +118,31 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 		}
 
 		c = vmess.StreamHTTPConn(c, httpOpts)
+	case "h2":
+		host, _, _ := net.SplitHostPort(v.addr)
+		tlsOpts := vmess.TLSConfig{
+			Host:           host,
+			SkipCertVerify: v.option.SkipCertVerify,
+			NextProtos:     []string{"h2"},
+		}
+
+		if v.option.ServerName != "" {
+			tlsOpts.Host = v.option.ServerName
+		}
+
+		c, err = vmess.StreamTLSConn(c, &tlsOpts)
+		if err != nil {
+			return nil, err
+		}
+
+		h2Opts := &vmess.H2Config{
+			Hosts: v.option.HTTP2Opts.Host,
+			Path:  v.option.HTTP2Opts.Path,
+		}
+
+		c, err = vmess.StreamH2Conn(c, h2Opts)
+	case "grpc":
+		c, err = gun.StreamGunWithConn(c, v.gunTLSConfig, v.gunConfig)
 	default:
 		// handle TLS
 		if v.option.TLS {
@@ -87,7 +150,6 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 			tlsOpts := &vmess.TLSConfig{
 				Host:           host,
 				SkipCertVerify: v.option.SkipCertVerify,
-				SessionCache:   getClientSessionCache(),
 			}
 
 			if v.option.ServerName != "" {
@@ -105,19 +167,38 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 	return v.client.StreamConn(c, parseVmessAddr(metadata))
 }
 
-func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
+// DialContext implements C.ProxyAdapter
+func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn, err error) {
+	// gun transport
+	if v.transport != nil {
+		c, err := gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer safeConnClose(c, err)
+
+		c, err = v.client.StreamConn(c, parseVmessAddr(metadata))
+		if err != nil {
+			return nil, err
+		}
+
+		return NewConn(c, v), nil
+	}
+
 	c, err := dialer.DialContext(ctx, "tcp", v.addr)
 	if err != nil {
 		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
 	}
 	tcpKeepAlive(c)
+	defer safeConnClose(c, err)
 
 	c, err = v.StreamConn(c, metadata)
 	return NewConn(c, v), err
 }
 
-func (v *Vmess) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	// vmess use stream-oriented udp, so clash needs a net.UDPAddr
+// DialUDP implements C.ProxyAdapter
+func (v *Vmess) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
+	// vmess use stream-oriented udp with a special address, so we needs a net.UDPAddr
 	if !metadata.Resolved() {
 		ip, err := resolver.ResolveIP(metadata.Host)
 		if err != nil {
@@ -126,17 +207,33 @@ func (v *Vmess) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 		metadata.DstIP = ip
 	}
 
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialer.DialContext(ctx, "tcp", v.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+	var c net.Conn
+	// gun transport
+	if v.transport != nil {
+		c, err = gun.StreamGunWithTransport(v.transport, v.gunConfig)
+		if err != nil {
+			return nil, err
+		}
+		defer safeConnClose(c, err)
+
+		c, err = v.client.StreamConn(c, parseVmessAddr(metadata))
+	} else {
+		ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
+		defer cancel()
+		c, err = dialer.DialContext(ctx, "tcp", v.addr)
+		if err != nil {
+			return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+		}
+		tcpKeepAlive(c)
+		defer safeConnClose(c, err)
+
+		c, err = v.StreamConn(c, metadata)
 	}
-	tcpKeepAlive(c)
-	c, err = v.StreamConn(c, metadata)
+
 	if err != nil {
 		return nil, fmt.Errorf("new vmess client error: %v", err)
 	}
+
 	return newPacketConn(&vmessPacketConn{Conn: c, rAddr: metadata.UDPAddr()}, v), nil
 }
 
@@ -148,21 +245,66 @@ func NewVmess(option VmessOption) (*Vmess, error) {
 		Security: security,
 		HostName: option.Server,
 		Port:     strconv.Itoa(option.Port),
+		IsAead:   option.AlterID == 0,
 	})
 	if err != nil {
 		return nil, err
 	}
 
-	return &Vmess{
+	switch option.Network {
+	case "h2", "grpc":
+		if !option.TLS {
+			return nil, fmt.Errorf("TLS must be true with h2/grpc network")
+		}
+	}
+
+	v := &Vmess{
 		Base: &Base{
 			name: option.Name,
 			addr: net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
 			tp:   C.Vmess,
-			udp:  true,
+			udp:  option.UDP,
 		},
 		client: client,
 		option: &option,
-	}, nil
+	}
+
+	switch option.Network {
+	case "h2":
+		if len(option.HTTP2Opts.Host) == 0 {
+			option.HTTP2Opts.Host = append(option.HTTP2Opts.Host, "www.example.com")
+		}
+	case "grpc":
+		dialFn := func(network, addr string) (net.Conn, error) {
+			c, err := dialer.DialContext(context.Background(), "tcp", v.addr)
+			if err != nil {
+				return nil, fmt.Errorf("%s connect error: %s", v.addr, err.Error())
+			}
+			tcpKeepAlive(c)
+			return c, nil
+		}
+
+		gunConfig := &gun.Config{
+			ServiceName: v.option.GrpcOpts.GrpcServiceName,
+			Host:        v.option.ServerName,
+		}
+		tlsConfig := &tls.Config{
+			InsecureSkipVerify: v.option.SkipCertVerify,
+			ServerName:         v.option.ServerName,
+		}
+
+		if v.option.ServerName == "" {
+			host, _, _ := net.SplitHostPort(v.addr)
+			tlsConfig.ServerName = host
+			gunConfig.Host = host
+		}
+
+		v.gunTLSConfig = tlsConfig
+		v.gunConfig = gunConfig
+		v.transport = gun.NewHTTP2Client(dialFn, tlsConfig)
+	}
+
+	return v, nil
 }
 
 func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {

adapter/outboundgroup/common.go

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

adapter/outboundgroup/fallback.go

@@ -4,25 +4,27 @@ import (
 	"context"
 	"encoding/json"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
 )
 
 type Fallback struct {
 	*outbound.Base
-	single    *singledo.Single
-	providers []provider.ProxyProvider
+	disableUDP bool
+	single     *singledo.Single
+	providers  []provider.ProxyProvider
 }
 
 func (f *Fallback) Now() string {
-	proxy := f.findAliveProxy()
+	proxy := f.findAliveProxy(false)
 	return proxy.Name()
 }
 
+// DialContext implements C.ProxyAdapter
 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)
@@ -30,8 +32,9 @@ func (f *Fallback) DialContext(ctx context.Context, metadata *C.Metadata) (C.Con
 	return c, err
 }
 
+// DialUDP implements C.ProxyAdapter
 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)
@@ -39,14 +42,20 @@ func (f *Fallback) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 	return pc, err
 }
 
+// SupportUDP implements C.ProxyAdapter
 func (f *Fallback) SupportUDP() bool {
-	proxy := f.findAliveProxy()
+	if f.disableUDP {
+		return false
+	}
+
+	proxy := f.findAliveProxy(false)
 	return proxy.SupportUDP()
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (f *Fallback) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range f.proxies() {
+	for _, proxy := range f.proxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -56,34 +65,36 @@ func (f *Fallback) MarshalJSON() ([]byte, error) {
 	})
 }
 
+// Unwrap implements C.ProxyAdapter
 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 {
-	proxies := f.proxies()
+func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
+	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),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
+		Base:       outbound.NewBase(options.Name, "", C.Fallback, false),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		disableUDP: options.DisableUDP,
 	}
 }

adapter/outboundgroup/loadbalance.go

@@ -0,0 +1,179 @@
+package outboundgroup
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"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"
+
+	"golang.org/x/net/publicsuffix"
+)
+
+type strategyFn = func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy
+
+type LoadBalance struct {
+	*outbound.Base
+	disableUDP bool
+	single     *singledo.Single
+	providers  []provider.ProxyProvider
+	strategyFn strategyFn
+}
+
+var errStrategy = errors.New("unsupported strategy")
+
+func parseStrategy(config map[string]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 {
+	if metadata.Host != "" {
+		// ip host
+		if ip := net.ParseIP(metadata.Host); ip != nil {
+			return metadata.Host
+		}
+
+		if etld, err := publicsuffix.EffectiveTLDPlusOne(metadata.Host); err == nil {
+			return etld
+		}
+	}
+
+	if metadata.DstIP == nil {
+		return ""
+	}
+
+	return metadata.DstIP.String()
+}
+
+func jumpHash(key uint64, buckets int32) int32 {
+	var b, j int64
+
+	for j < int64(buckets) {
+		b = j
+		key = key*2862933555777941757 + 1
+		j = int64(float64(b+1) * (float64(int64(1)<<31) / float64((key>>33)+1)))
+	}
+
+	return int32(b)
+}
+
+// DialContext implements C.ProxyAdapter
+func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Conn, err error) {
+	defer func() {
+		if err == nil {
+			c.AppendToChains(lb)
+		}
+	}()
+
+	proxy := lb.Unwrap(metadata)
+
+	c, err = proxy.DialContext(ctx, metadata)
+	return
+}
+
+// DialUDP implements C.ProxyAdapter
+func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error) {
+	defer func() {
+		if err == nil {
+			pc.AppendToChains(lb)
+		}
+	}()
+
+	proxy := lb.Unwrap(metadata)
+
+	return proxy.DialUDP(metadata)
+}
+
+// SupportUDP implements C.ProxyAdapter
+func (lb *LoadBalance) SupportUDP() bool {
+	return !lb.disableUDP
+}
+
+func strategyRoundRobin() strategyFn {
+	idx := 0
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		length := len(proxies)
+		for i := 0; i < length; i++ {
+			idx = (idx + 1) % length
+			proxy := proxies[idx]
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+func strategyConsistentHashing() strategyFn {
+	maxRetry := 5
+	return func(proxies []C.Proxy, metadata *C.Metadata) C.Proxy {
+		key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
+		buckets := int32(len(proxies))
+		for i := 0; i < maxRetry; i, key = i+1, key+1 {
+			idx := jumpHash(key, buckets)
+			proxy := proxies[idx]
+			if proxy.Alive() {
+				return proxy
+			}
+		}
+
+		return proxies[0]
+	}
+}
+
+// Unwrap implements C.ProxyAdapter
+func (lb *LoadBalance) Unwrap(metadata *C.Metadata) C.Proxy {
+	proxies := lb.proxies(true)
+	return lb.strategyFn(proxies, metadata)
+}
+
+func (lb *LoadBalance) proxies(touch bool) []C.Proxy {
+	elm, _, _ := lb.single.Do(func() (interface{}, error) {
+		return getProvidersProxies(lb.providers, touch), nil
+	})
+
+	return elm.([]C.Proxy)
+}
+
+// MarshalJSON implements C.ProxyAdapter
+func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
+	var all []string
+	for _, proxy := range lb.proxies(false) {
+		all = append(all, proxy.Name())
+	}
+	return json.Marshal(map[string]interface{}{
+		"type": lb.Type().String(),
+		"all":  all,
+	})
+}
+
+func NewLoadBalance(options *GroupCommonOption, providers []provider.ProxyProvider, strategy string) (lb *LoadBalance, err error) {
+	var strategyFn strategyFn
+	switch strategy {
+	case "consistent-hashing":
+		strategyFn = strategyConsistentHashing()
+	case "round-robin":
+		strategyFn = strategyRoundRobin()
+	default:
+		return nil, fmt.Errorf("%w: %s", errStrategy, strategy)
+	}
+	return &LoadBalance{
+		Base:       outbound.NewBase(options.Name, "", C.LoadBalance, false),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		strategyFn: strategyFn,
+		disableUDP: options.DisableUDP,
+	}, nil
+}

adapter/outboundgroup/parser.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/structure"
 	C "github.com/Dreamacro/clash/constant"
 )
@@ -12,25 +12,28 @@ import (
 var (
 	errFormat            = errors.New("format error")
 	errType              = errors.New("unsupport type")
-	errMissUse           = errors.New("`use` field should not be empty")
 	errMissProxy         = errors.New("`use` or `proxies` missing")
 	errMissHealthCheck   = errors.New("`url` or `interval` missing")
 	errDuplicateProvider = errors.New("`duplicate provider name")
 )
 
 type GroupCommonOption struct {
-	Name     string   `group:"name"`
-	Type     string   `group:"type"`
-	Proxies  []string `group:"proxies,omitempty"`
-	Use      []string `group:"use,omitempty"`
-	URL      string   `group:"url,omitempty"`
-	Interval int      `group:"interval,omitempty"`
+	Name       string   `group:"name"`
+	Type       string   `group:"type"`
+	Proxies    []string `group:"proxies,omitempty"`
+	Use        []string `group:"use,omitempty"`
+	URL        string   `group:"url,omitempty"`
+	Interval   int      `group:"interval,omitempty"`
+	Lazy       bool     `group:"lazy,omitempty"`
+	DisableUDP bool     `group:"disable-udp,omitempty"`
 }
 
 func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy, providersMap map[string]provider.ProxyProvider) (C.ProxyAdapter, error) {
 	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
 	}
@@ -55,7 +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
@@ -63,9 +66,13 @@ func ParseProxyGroup(config map[string]interface{}, proxyMap map[string]C.Proxy,
 
 			providers = append(providers, pd)
 		} else {
+			if _, ok := providersMap[groupName]; ok {
+				return nil, errDuplicateProvider
+			}
+
 			// select don't need health check
 			if groupOption.Type == "select" || groupOption.Type == "relay" {
-				hc := provider.NewHealthCheck(ps, "", 0)
+				hc := provider.NewHealthCheck(ps, "", 0, true)
 				pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 				if err != nil {
 					return nil, err
@@ -78,7 +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
@@ -102,15 +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)
 	}

adapter/outboundgroup/relay.go

@@ -6,8 +6,8 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"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"
@@ -19,10 +19,11 @@ type Relay struct {
 	providers []provider.ProxyProvider
 }
 
+// DialContext implements C.ProxyAdapter
 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")
+		return nil, errors.New("proxy does not exist")
 	}
 	first := proxies[0]
 	last := proxies[len(proxies)-1]
@@ -56,9 +57,10 @@ func (r *Relay) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 	return outbound.NewConn(c, r), nil
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (r *Relay) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range r.rawProxies() {
+	for _, proxy := range r.rawProxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -67,16 +69,16 @@ 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 {
-	proxies := r.rawProxies()
+func (r *Relay) proxies(metadata *C.Metadata, touch bool) []C.Proxy {
+	proxies := r.rawProxies(touch)
 
 	for n, proxy := range proxies {
 		subproxy := proxy.Unwrap(metadata)
@@ -89,9 +91,9 @@ 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,
 	}

adapter/outboundgroup/selector.go

@@ -5,42 +5,51 @@ import (
 	"encoding/json"
 	"errors"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
 )
 
 type Selector struct {
 	*outbound.Base
-	single    *singledo.Single
-	selected  string
-	providers []provider.ProxyProvider
+	disableUDP bool
+	single     *singledo.Single
+	selected   string
+	providers  []provider.ProxyProvider
 }
 
+// DialContext implements C.ProxyAdapter
 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)
 	}
 	return c, err
 }
 
+// DialUDP implements C.ProxyAdapter
 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)
 	}
 	return pc, err
 }
 
+// SupportUDP implements C.ProxyAdapter
 func (s *Selector) SupportUDP() bool {
-	return s.selectedProxy().SupportUDP()
+	if s.disableUDP {
+		return false
+	}
+
+	return s.selectedProxy(false).SupportUDP()
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (s *Selector) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range getProvidersProxies(s.providers) {
+	for _, proxy := range getProvidersProxies(s.providers, false) {
 		all = append(all, proxy.Name())
 	}
 
@@ -52,11 +61,11 @@ 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()
@@ -64,16 +73,17 @@ func (s *Selector) Set(name string) error {
 		}
 	}
 
-	return errors.New("Proxy does not exist")
+	return errors.New("proxy not exist")
 }
 
+// Unwrap implements C.ProxyAdapter
 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 +96,13 @@ 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),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		providers: providers,
-		selected:  selected,
+		Base:       outbound.NewBase(options.Name, "", C.Selector, false),
+		single:     singledo.NewSingle(defaultGetProxiesDuration),
+		providers:  providers,
+		selected:   selected,
+		disableUDP: options.DisableUDP,
 	}
 }

adapter/outboundgroup/urltest.go

@@ -5,8 +5,8 @@ import (
 	"encoding/json"
 	"time"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/common/singledo"
 	C "github.com/Dreamacro/clash/constant"
 )
@@ -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
@@ -29,43 +30,52 @@ type URLTest struct {
 }
 
 func (u *URLTest) Now() string {
-	return u.fast().Name()
+	return u.fast(false).Name()
 }
 
+// DialContext implements C.ProxyAdapter
 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)
 	}
 	return c, err
 }
 
+// DialUDP implements C.ProxyAdapter
 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)
 	}
 	return pc, err
 }
 
+// Unwrap implements C.ProxyAdapter
 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()
+		fastNotExist := true
+
 		for _, proxy := range proxies[1:] {
+			if u.fastNode != nil && proxy.Name() == u.fastNode.Name() {
+				fastNotExist = false
+			}
+
 			if !proxy.Alive() {
 				continue
 			}
@@ -78,7 +88,7 @@ func (u *URLTest) fast() C.Proxy {
 		}
 
 		// tolerance
-		if u.fastNode == nil || u.fastNode.LastDelay() > fast.LastDelay() + u.tolerance {
+		if u.fastNode == nil || fastNotExist || !u.fastNode.Alive() || u.fastNode.LastDelay() > fast.LastDelay()+u.tolerance {
 			u.fastNode = fast
 		}
 
@@ -88,13 +98,19 @@ func (u *URLTest) fast() C.Proxy {
 	return elm.(C.Proxy)
 }
 
+// SupportUDP implements C.ProxyAdapter
 func (u *URLTest) SupportUDP() bool {
-	return u.fast().SupportUDP()
+	if u.disableUDP {
+		return false
+	}
+
+	return u.fast(false).SupportUDP()
 }
 
+// MarshalJSON implements C.ProxyAdapter
 func (u *URLTest) MarshalJSON() ([]byte, error) {
 	var all []string
-	for _, proxy := range u.proxies() {
+	for _, proxy := range u.proxies(false) {
 		all = append(all, proxy.Name())
 	}
 	return json.Marshal(map[string]interface{}{
@@ -117,12 +133,13 @@ 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 {

adapter/outboundgroup/util.go

@@ -16,25 +16,7 @@ func addrToMetadata(rawAddress string) (addr *C.Metadata, err error) {
 	}
 
 	ip := net.ParseIP(host)
-	if ip != nil {
-		if ip.To4() != nil {
-			addr = &C.Metadata{
-				AddrType: C.AtypIPv4,
-				Host:     "",
-				DstIP:    ip,
-				DstPort:  port,
-			}
-			return
-		} else {
-			addr = &C.Metadata{
-				AddrType: C.AtypIPv6,
-				Host:     "",
-				DstIP:    ip,
-				DstPort:  port,
-			}
-			return
-		}
-	} else {
+	if ip == nil {
 		addr = &C.Metadata{
 			AddrType: C.AtypDomainName,
 			Host:     host,
@@ -42,7 +24,23 @@ func addrToMetadata(rawAddress string) (addr *C.Metadata, err error) {
 			DstPort:  port,
 		}
 		return
+	} else if ip4 := ip.To4(); ip4 != nil {
+		addr = &C.Metadata{
+			AddrType: C.AtypIPv4,
+			Host:     "",
+			DstIP:    ip4,
+			DstPort:  port,
+		}
+		return
 	}
+
+	addr = &C.Metadata{
+		AddrType: C.AtypIPv6,
+		Host:     "",
+		DstIP:    ip,
+		DstPort:  port,
+	}
+	return
 }
 
 func tcpKeepAlive(c net.Conn) {

adapter/parser.go

@@ -1,8 +1,9 @@
-package outbound
+package adapter
 
 import (
 	"fmt"
 
+	"github.com/Dreamacro/clash/adapter/outbound"
 	"github.com/Dreamacro/clash/common/structure"
 	C "github.com/Dreamacro/clash/constant"
 )
@@ -11,43 +12,45 @@ func ParseProxy(mapping map[string]interface{}) (C.Proxy, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "proxy", WeaklyTypedInput: true})
 	proxyType, existType := mapping["type"].(string)
 	if !existType {
-		return nil, fmt.Errorf("Missing type")
+		return nil, fmt.Errorf("missing type")
 	}
 
-	var proxy C.ProxyAdapter
-	err := fmt.Errorf("Cannot parse")
+	var (
+		proxy C.ProxyAdapter
+		err   error
+	)
 	switch proxyType {
 	case "ss":
-		ssOption := &ShadowSocksOption{}
+		ssOption := &outbound.ShadowSocksOption{}
 		err = decoder.Decode(mapping, ssOption)
 		if err != nil {
 			break
 		}
-		proxy, err = NewShadowSocks(*ssOption)
+		proxy, err = outbound.NewShadowSocks(*ssOption)
 	case "ssr":
-		ssrOption := &ShadowSocksROption{}
+		ssrOption := &outbound.ShadowSocksROption{}
 		err = decoder.Decode(mapping, ssrOption)
 		if err != nil {
 			break
 		}
-		proxy, err = NewShadowSocksR(*ssrOption)
+		proxy, err = outbound.NewShadowSocksR(*ssrOption)
 	case "socks5":
-		socksOption := &Socks5Option{}
+		socksOption := &outbound.Socks5Option{}
 		err = decoder.Decode(mapping, socksOption)
 		if err != nil {
 			break
 		}
-		proxy = NewSocks5(*socksOption)
+		proxy = outbound.NewSocks5(*socksOption)
 	case "http":
-		httpOption := &HttpOption{}
+		httpOption := &outbound.HttpOption{}
 		err = decoder.Decode(mapping, httpOption)
 		if err != nil {
 			break
 		}
-		proxy = NewHttp(*httpOption)
+		proxy = outbound.NewHttp(*httpOption)
 	case "vmess":
-		vmessOption := &VmessOption{
-			HTTPOpts: HTTPOptions{
+		vmessOption := &outbound.VmessOption{
+			HTTPOpts: outbound.HTTPOptions{
 				Method: "GET",
 				Path:   []string{"/"},
 			},
@@ -56,23 +59,23 @@ func ParseProxy(mapping map[string]interface{}) (C.Proxy, error) {
 		if err != nil {
 			break
 		}
-		proxy, err = NewVmess(*vmessOption)
+		proxy, err = outbound.NewVmess(*vmessOption)
 	case "snell":
-		snellOption := &SnellOption{}
+		snellOption := &outbound.SnellOption{}
 		err = decoder.Decode(mapping, snellOption)
 		if err != nil {
 			break
 		}
-		proxy, err = NewSnell(*snellOption)
+		proxy, err = outbound.NewSnell(*snellOption)
 	case "trojan":
-		trojanOption := &TrojanOption{}
+		trojanOption := &outbound.TrojanOption{}
 		err = decoder.Decode(mapping, trojanOption)
 		if err != nil {
 			break
 		}
-		proxy, err = NewTrojan(*trojanOption)
+		proxy, err = outbound.NewTrojan(*trojanOption)
 	default:
-		return nil, fmt.Errorf("Unsupport proxy type: %s", proxyType)
+		return nil, fmt.Errorf("unsupport proxy type: %s", proxyType)
 	}
 
 	if err != nil {

adapter/provider/fetcher.go

@@ -72,9 +72,11 @@ func (f *fetcher) Initial() (interface{}, error) {
 		if err != nil {
 			return nil, err
 		}
+
+		isLocal = false
 	}
 
-	if f.vehicle.Type() != File {
+	if f.vehicle.Type() != File && !isLocal {
 		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
 			return nil, err
 		}
@@ -108,8 +110,10 @@ func (f *fetcher) Update() (interface{}, bool, error) {
 		return nil, false, err
 	}
 
-	if err := safeWrite(f.vehicle.Path(), buf); err != nil {
-		return nil, false, err
+	if f.vehicle.Type() != File {
+		if err := safeWrite(f.vehicle.Path(), buf); err != nil {
+			return nil, false, err
+		}
 	}
 
 	f.updatedAt = &now

adapter/provider/healthcheck.go

@@ -2,9 +2,12 @@ package provider
 
 import (
 	"context"
+	"sync"
 	"time"
 
 	C "github.com/Dreamacro/clash/constant"
+
+	"go.uber.org/atomic"
 )
 
 const (
@@ -17,10 +20,12 @@ type HealthCheckOption struct {
 }
 
 type HealthCheck struct {
-	url      string
-	proxies  []C.Proxy
-	interval uint
-	done     chan struct{}
+	url       string
+	proxies   []C.Proxy
+	interval  uint
+	lazy      bool
+	lastTouch *atomic.Int64
+	done      chan struct{}
 }
 
 func (hc *HealthCheck) process() {
@@ -30,7 +35,10 @@ 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
@@ -46,13 +54,24 @@ 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)
+	wg := &sync.WaitGroup{}
+
 	for _, proxy := range hc.proxies {
-		go proxy.URLTest(ctx, hc.url)
+		wg.Add(1)
+
+		go func(p C.Proxy) {
+			p.URLTest(ctx, hc.url)
+			wg.Done()
+		}(proxy)
 	}
 
-	<-ctx.Done()
+	wg.Wait()
 	cancel()
 }
 
@@ -60,11 +79,13 @@ 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,
-		url:      url,
-		interval: interval,
-		done:     make(chan struct{}, 1),
+		proxies:   proxies,
+		url:       url,
+		interval:  interval,
+		lazy:      lazy,
+		lastTouch: atomic.NewInt64(0),
+		done:      make(chan struct{}, 1),
 	}
 }

adapter/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 {
@@ -30,16 +31,20 @@ 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
 	}
 
-	var hcInterval uint = 0
+	var hcInterval uint
 	if schema.HealthCheck.Enable {
 		hcInterval = uint(schema.HealthCheck.Interval)
 	}
-	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval)
+	hc := NewHealthCheck([]C.Proxy{}, schema.HealthCheck.URL, hcInterval, schema.HealthCheck.Lazy)
 
 	path := C.Path.Resolve(schema.Path)
 

adapter/provider/provider.go

@@ -7,7 +7,7 @@ import (
 	"runtime"
 	"time"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
+	"github.com/Dreamacro/clash/adapter"
 	C "github.com/Dreamacro/clash/constant"
 
 	"gopkg.in/yaml.v2"
@@ -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{}
 
@@ -120,20 +128,20 @@ func proxiesParse(buf []byte) (interface{}, error) {
 	}
 
 	if schema.Proxies == nil {
-		return nil, errors.New("File must have a `proxies` field")
+		return nil, errors.New("file must have a `proxies` field")
 	}
 
 	proxies := []C.Proxy{}
 	for idx, mapping := range schema.Proxies {
-		proxy, err := outbound.ParseProxy(mapping)
+		proxy, err := adapter.ParseProxy(mapping)
 		if err != nil {
-			return nil, fmt.Errorf("Proxy %d error: %w", idx, err)
+			return nil, fmt.Errorf("proxy %d error: %w", idx, err)
 		}
 		proxies = append(proxies, proxy)
 	}
 
 	if len(proxies) == 0 {
-		return nil, errors.New("File doesn't have any valid proxy")
+		return nil, errors.New("file doesn't have any valid proxy")
 	}
 
 	return proxies, nil
@@ -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()
 }

adapter/provider/vehicle.go

@@ -107,6 +107,7 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	buf, err := ioutil.ReadAll(resp.Body)
 	if err != nil {

adapters/inbound/http.go

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

adapters/inbound/socket.go

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

adapters/outbound/snell.go

@@ -1,78 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/common/structure"
-	"github.com/Dreamacro/clash/component/dialer"
-	obfs "github.com/Dreamacro/clash/component/simple-obfs"
-	"github.com/Dreamacro/clash/component/snell"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Snell struct {
-	*Base
-	psk        []byte
-	obfsOption *simpleObfsOption
-}
-
-type SnellOption struct {
-	Name     string                 `proxy:"name"`
-	Server   string                 `proxy:"server"`
-	Port     int                    `proxy:"port"`
-	Psk      string                 `proxy:"psk"`
-	ObfsOpts map[string]interface{} `proxy:"obfs-opts,omitempty"`
-}
-
-func (s *Snell) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	switch s.obfsOption.Mode {
-	case "tls":
-		c = obfs.NewTLSObfs(c, s.obfsOption.Host)
-	case "http":
-		_, port, _ := net.SplitHostPort(s.addr)
-		c = obfs.NewHTTPObfs(c, s.obfsOption.Host, port)
-	}
-	c = snell.StreamConn(c, s.psk)
-	port, _ := strconv.Atoi(metadata.DstPort)
-	err := snell.WriteHeader(c, metadata.String(), uint(port))
-	return c, err
-}
-
-func (s *Snell) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", s.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", s.addr, err)
-	}
-	tcpKeepAlive(c)
-
-	c, err = s.StreamConn(c, metadata)
-	return NewConn(c, s), err
-}
-
-func NewSnell(option SnellOption) (*Snell, error) {
-	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
-	psk := []byte(option.Psk)
-
-	decoder := structure.NewDecoder(structure.Option{TagName: "obfs", WeaklyTypedInput: true})
-	obfsOption := &simpleObfsOption{Host: "bing.com"}
-	if err := decoder.Decode(option.ObfsOpts, obfsOption); err != nil {
-		return nil, fmt.Errorf("snell %s initialize obfs error: %w", addr, err)
-	}
-
-	if obfsOption.Mode != "tls" && obfsOption.Mode != "http" {
-		return nil, fmt.Errorf("snell %s obfs mode error: %s", addr, obfsOption.Mode)
-	}
-
-	return &Snell{
-		Base: &Base{
-			name: option.Name,
-			addr: addr,
-			tp:   C.Snell,
-		},
-		psk:        psk,
-		obfsOption: obfsOption,
-	}, nil
-}

adapters/outbound/trojan.go

@@ -1,107 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"net"
-	"strconv"
-
-	"github.com/Dreamacro/clash/component/dialer"
-	"github.com/Dreamacro/clash/component/trojan"
-	C "github.com/Dreamacro/clash/constant"
-)
-
-type Trojan struct {
-	*Base
-	instance *trojan.Trojan
-}
-
-type TrojanOption struct {
-	Name           string   `proxy:"name"`
-	Server         string   `proxy:"server"`
-	Port           int      `proxy:"port"`
-	Password       string   `proxy:"password"`
-	ALPN           []string `proxy:"alpn,omitempty"`
-	SNI            string   `proxy:"sni,omitempty"`
-	SkipCertVerify bool     `proxy:"skip-cert-verify,omitempty"`
-	UDP            bool     `proxy:"udp,omitempty"`
-}
-
-func (t *Trojan) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	c, err := t.instance.StreamConn(c)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-
-	err = t.instance.WriteHeader(c, trojan.CommandTCP, serializesSocksAddr(metadata))
-	return c, err
-}
-
-func (t *Trojan) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn, error) {
-	c, err := dialer.DialContext(ctx, "tcp", t.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-	tcpKeepAlive(c)
-	c, err = t.StreamConn(c, metadata)
-	if err != nil {
-		return nil, err
-	}
-
-	return NewConn(c, t), err
-}
-
-func (t *Trojan) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), tcpTimeout)
-	defer cancel()
-	c, err := dialer.DialContext(ctx, "tcp", t.addr)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-	tcpKeepAlive(c)
-	c, err = t.instance.StreamConn(c)
-	if err != nil {
-		return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
-	}
-
-	err = t.instance.WriteHeader(c, trojan.CommandUDP, serializesSocksAddr(metadata))
-	if err != nil {
-		return nil, err
-	}
-
-	pc := t.instance.PacketConn(c)
-	return newPacketConn(pc, t), err
-}
-
-func (t *Trojan) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]string{
-		"type": t.Type().String(),
-	})
-}
-
-func NewTrojan(option TrojanOption) (*Trojan, error) {
-	addr := net.JoinHostPort(option.Server, strconv.Itoa(option.Port))
-
-	tOption := &trojan.Option{
-		Password:           option.Password,
-		ALPN:               option.ALPN,
-		ServerName:         option.Server,
-		SkipCertVerify:     option.SkipCertVerify,
-		ClientSessionCache: getClientSessionCache(),
-	}
-
-	if option.SNI != "" {
-		tOption.ServerName = option.SNI
-	}
-
-	return &Trojan{
-		Base: &Base{
-			name: option.Name,
-			addr: addr,
-			tp:   C.Trojan,
-			udp:  option.UDP,
-		},
-		instance: trojan.New(tOption),
-	}, nil
-}

adapters/outboundgroup/common.go

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

adapters/outboundgroup/loadbalance.go

@@ -1,125 +0,0 @@
-package outboundgroup
-
-import (
-	"context"
-	"encoding/json"
-	"net"
-
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/provider"
-	"github.com/Dreamacro/clash/common/murmur3"
-	"github.com/Dreamacro/clash/common/singledo"
-	C "github.com/Dreamacro/clash/constant"
-
-	"golang.org/x/net/publicsuffix"
-)
-
-type LoadBalance struct {
-	*outbound.Base
-	single    *singledo.Single
-	maxRetry  int
-	providers []provider.ProxyProvider
-}
-
-func getKey(metadata *C.Metadata) string {
-	if metadata.Host != "" {
-		// ip host
-		if ip := net.ParseIP(metadata.Host); ip != nil {
-			return metadata.Host
-		}
-
-		if etld, err := publicsuffix.EffectiveTLDPlusOne(metadata.Host); err == nil {
-			return etld
-		}
-	}
-
-	if metadata.DstIP == nil {
-		return ""
-	}
-
-	return metadata.DstIP.String()
-}
-
-func jumpHash(key uint64, buckets int32) int32 {
-	var b, j int64
-
-	for j < int64(buckets) {
-		b = j
-		key = key*2862933555777941757 + 1
-		j = int64(float64(b+1) * (float64(int64(1)<<31) / float64((key>>33)+1)))
-	}
-
-	return int32(b)
-}
-
-func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Conn, err error) {
-	defer func() {
-		if err == nil {
-			c.AppendToChains(lb)
-		}
-	}()
-
-	proxy := lb.Unwrap(metadata)
-
-	c, err = proxy.DialContext(ctx, metadata)
-	return
-}
-
-func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error) {
-	defer func() {
-		if err == nil {
-			pc.AppendToChains(lb)
-		}
-	}()
-
-	proxy := lb.Unwrap(metadata)
-
-	return proxy.DialUDP(metadata)
-}
-
-func (lb *LoadBalance) SupportUDP() bool {
-	return true
-}
-
-func (lb *LoadBalance) Unwrap(metadata *C.Metadata) C.Proxy {
-	key := uint64(murmur3.Sum32([]byte(getKey(metadata))))
-	proxies := lb.proxies()
-	buckets := int32(len(proxies))
-	for i := 0; i < lb.maxRetry; i, key = i+1, key+1 {
-		idx := jumpHash(key, buckets)
-		proxy := proxies[idx]
-		if proxy.Alive() {
-			return proxy
-		}
-	}
-
-	return proxies[0]
-}
-
-func (lb *LoadBalance) proxies() []C.Proxy {
-	elm, _, _ := lb.single.Do(func() (interface{}, error) {
-		return getProvidersProxies(lb.providers), nil
-	})
-
-	return elm.([]C.Proxy)
-}
-
-func (lb *LoadBalance) MarshalJSON() ([]byte, error) {
-	var all []string
-	for _, proxy := range lb.proxies() {
-		all = append(all, proxy.Name())
-	}
-	return json.Marshal(map[string]interface{}{
-		"type": lb.Type().String(),
-		"all":  all,
-	})
-}
-
-func NewLoadBalance(name string, providers []provider.ProxyProvider) *LoadBalance {
-	return &LoadBalance{
-		Base:      outbound.NewBase(name, "", C.LoadBalance, false),
-		single:    singledo.NewSingle(defaultGetProxiesDuration),
-		maxRetry:  3,
-		providers: providers,
-	}
-}

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()
@@ -146,6 +146,23 @@ func (c *LruCache) SetWithExpire(key interface{}, value interface{}, expires tim
 	c.maybeDeleteOldest()
 }
 
+// CloneTo clone and overwrite elements to another LruCache
+func (c *LruCache) CloneTo(n *LruCache) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	n.mu.Lock()
+	defer n.mu.Unlock()
+
+	n.lru = list.New()
+	n.cache = make(map[interface{}]*list.Element)
+
+	for e := c.lru.Front(); e != nil; e = e.Next() {
+		elm := e.Value.(*entry)
+		n.cache[elm.key] = n.lru.PushBack(elm)
+	}
+}
+
 func (c *LruCache) get(key interface{}) *entry {
 	c.mu.Lock()
 	defer c.mu.Unlock()
@@ -171,7 +188,7 @@ func (c *LruCache) get(key interface{}) *entry {
 }
 
 // Delete removes the value associated with a key.
-func (c *LruCache) Delete(key string) {
+func (c *LruCache) Delete(key interface{}) {
 	c.mu.Lock()
 
 	if le, ok := c.cache[key]; ok {

common/cache/lrucache_test.go

@@ -164,3 +164,21 @@ func TestStale(t *testing.T) {
 	assert.Equal(t, tenSecBefore, expires)
 	assert.Equal(t, true, exist)
 }
+
+func TestCloneTo(t *testing.T) {
+	o := NewLRUCache(WithSize(10))
+	o.Set("1", 1)
+	o.Set("2", 2)
+
+	n := NewLRUCache(WithSize(2))
+	n.Set("3", 3)
+	n.Set("4", 4)
+
+	o.CloneTo(n)
+
+	assert.False(t, n.Exist("3"))
+	assert.True(t, n.Exist("1"))
+
+	n.Set("5", 5)
+	assert.False(t, n.Exist("1"))
+}

common/net/bufconn.go

@@ -1,4 +1,4 @@
-package mixed
+package net
 
 import (
 	"bufio"

common/net/io.go

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

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

@@ -55,11 +55,13 @@ func (alloc *Allocator) Put(buf []byte) error {
 	if cap(buf) == 0 || cap(buf) > 65536 || cap(buf) != 1<<bits {
 		return errors.New("allocator Put() incorrect buffer size")
 	}
+
+	//lint:ignore SA6002 ignore temporarily
 	alloc.buffers[bits].Put(buf)
 	return nil
 }
 
-// msb return the pos of most significiant bit
+// msb return the pos of most significant bit
 func msb(size int) uint16 {
 	return uint16(bits.Len32(uint32(size)) - 1)
 }

common/pool/alloc_test.go

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

common/singledo/singledo.go

@@ -24,6 +24,8 @@ type Result struct {
 	Err error
 }
 
+// Do single.Do likes sync.singleFlight
+//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 +1,118 @@
+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

@@ -0,0 +1,53 @@
+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, _ := ifaceSingle.Do(func() (interface{}, error) {
+		return net.InterfaceByName(ifaceName)
+	})
+	if err != nil {
+		return err
+	}
+
+	dialer.Control = bindControl(iface.(*net.Interface).Index)
+	return nil
+}
+
+func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
+	iface, err, _ := ifaceSingle.Do(func() (interface{}, error) {
+		return net.InterfaceByName(ifaceName)
+	})
+	if err != nil {
+		return err
+	}
+
+	lc.Control = bindControl(iface.(*net.Interface).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()
-	if err != nil {
-		return nil, err
-	}
-
-	if ListenPacketHook != nil && address == "" {
-		ip, err := ListenPacketHook()
+	cfg := &net.ListenConfig{}
+	if ListenPacketHook != nil {
+		var err error
+		address, err = ListenPacketHook(cfg, address)
 		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) {
@@ -147,28 +133,27 @@ func dualStackDialContext(ctx context.Context, network, address string) (net.Con
 	go startRacer(ctx, network+"4", host, false)
 	go startRacer(ctx, network+"6", host, true)
 
-	for {
-		select {
-		case res := <-results:
-			if res.error == nil {
-				return res.Conn, nil
-			}
+	for res := range results {
+		if res.error == nil {
+			return res.Conn, nil
+		}
 
-			if !res.ipv6 {
-				primary = res
+		if !res.ipv6 {
+			primary = res
+		} else {
+			fallback = res
+		}
+
+		if primary.done && fallback.done {
+			if primary.resolved {
+				return nil, primary.error
+			} else if fallback.resolved {
+				return nil, fallback.error
 			} else {
-				fallback = res
-			}
-
-			if primary.done && fallback.done {
-				if primary.resolved {
-					return nil, primary.error
-				} else if fallback.resolved {
-					return nil, fallback.error
-				} else {
-					return nil, primary.error
-				}
+				return nil, primary.error
 			}
 		}
 	}
+
+	return nil, errors.New("never touched")
 }

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() (net.IP, error)
+type ListenPacketHookFunc = func(lc *net.ListenConfig, address string) (string, 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() (net.IP, error) {
-		elm, err, _ := single.Do(func() (interface{}, error) {
-			iface, err := net.InterfaceByName(name)
-			if err != nil {
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return nil, err
+	return func(lc *net.ListenConfig, address string) (string, error) {
+		err := bindIfaceToListenConfig(lc, name)
+		if err == errPlatformNotSupport {
+			address, err = fallbackBindToListenConfig(name)
 		}
 
-		addrs := elm.([]net.Addr)
-
-		for _, elm := range addrs {
-			addr, ok := elm.(*net.IPNet)
-			if !ok || addr.IP.To4() == nil {
-				continue
-			}
-
-			return addr.IP, nil
-		}
-
-		return nil, ErrAddrNotFound
+		return address, err
 	}
 }
 
 func DialerWithInterface(name string) DialHookFunc {
-	single := singledo.NewSingle(5 * time.Second)
-
 	return func(dialer *net.Dialer, network string, ip net.IP) error {
-		elm, err, _ := single.Do(func() (interface{}, error) {
-			iface, err := net.InterfaceByName(name)
-			if err != nil {
-				return nil, err
-			}
-
-			addrs, err := iface.Addrs()
-			if err != nil {
-				return nil, err
-			}
-
-			return addrs, nil
-		})
-
-		if err != nil {
-			return err
+		err := bindIfaceToDialer(dialer, name)
+		if err == errPlatformNotSupport {
+			err = fallbackBindToDialer(dialer, network, ip, name)
 		}
 
-		addrs := elm.([]net.Addr)
-
-		switch network {
-		case "tcp", "tcp4", "tcp6":
-			if addr, err := lookupTCPAddr(ip, addrs); err == nil {
-				dialer.LocalAddr = addr
-			} else {
-				return err
-			}
-		case "udp", "udp4", "udp6":
-			if addr, err := lookupUDPAddr(ip, addrs); err == nil {
-				dialer.LocalAddr = addr
-			} else {
-				return err
-			}
-		}
-
-		return nil
+		return err
 	}
 }

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 +90,16 @@ 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)
+}
+
 func (p *Pool) get(host string) net.IP {
 	current := p.offset
 	for {
@@ -116,7 +127,7 @@ func ipToUint(ip net.IP) uint32 {
 }
 
 func uintToIP(v uint32) net.IP {
-	return net.IPv4(byte(v>>24), byte(v>>16), byte(v>>8), byte(v))
+	return net.IP{byte(v >> 24), byte(v >> 16), byte(v >> 8), byte(v)}
 }
 
 // New return Pool instance
@@ -136,6 +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) {
-	item, loaded := t.mapping.LoadOrStore(key, &sync.WaitGroup{})
-	return item.(*sync.WaitGroup), loaded
+func (t *Table) GetOrCreateLock(key string) (*sync.Cond, bool) {
+	item, loaded := t.mapping.LoadOrStore(key, sync.NewCond(&sync.Mutex{}))
+	return item.(*sync.Cond), loaded
 }
 
 func (t *Table) Delete(key string) {

component/pool/pool.go

@@ -0,0 +1,114 @@
+package pool
+
+import (
+	"context"
+	"runtime"
+	"time"
+)
+
+type Factory = func(context.Context) (interface{}, error)
+
+type entry struct {
+	elm  interface{}
+	time time.Time
+}
+
+type Option func(*pool)
+
+// WithEvict set the evict callback
+func WithEvict(cb func(interface{})) Option {
+	return func(p *pool) {
+		p.evict = cb
+	}
+}
+
+// WithAge defined element max age (millisecond)
+func WithAge(maxAge int64) Option {
+	return func(p *pool) {
+		p.maxAge = maxAge
+	}
+}
+
+// WithSize defined max size of Pool
+func WithSize(maxSize int) Option {
+	return func(p *pool) {
+		p.ch = make(chan interface{}, maxSize)
+	}
+}
+
+// Pool is for GC, see New for detail
+type Pool struct {
+	*pool
+}
+
+type pool struct {
+	ch      chan interface{}
+	factory Factory
+	evict   func(interface{})
+	maxAge  int64
+}
+
+func (p *pool) GetContext(ctx context.Context) (interface{}, error) {
+	now := time.Now()
+	for {
+		select {
+		case item := <-p.ch:
+			elm := item.(*entry)
+			if p.maxAge != 0 && now.Sub(item.(*entry).time).Milliseconds() > p.maxAge {
+				if p.evict != nil {
+					p.evict(elm.elm)
+				}
+				continue
+			}
+
+			return elm.elm, nil
+		default:
+			return p.factory(ctx)
+		}
+	}
+}
+
+func (p *pool) Get() (interface{}, error) {
+	return p.GetContext(context.Background())
+}
+
+func (p *pool) Put(item interface{}) {
+	e := &entry{
+		elm:  item,
+		time: time.Now(),
+	}
+
+	select {
+	case p.ch <- e:
+		return
+	default:
+		// pool is full
+		if p.evict != nil {
+			p.evict(item)
+		}
+		return
+	}
+}
+
+func recycle(p *Pool) {
+	for item := range p.pool.ch {
+		if p.pool.evict != nil {
+			p.pool.evict(item.(*entry).elm)
+		}
+	}
+}
+
+func New(factory Factory, options ...Option) *Pool {
+	p := &pool{
+		ch:      make(chan interface{}, 10),
+		factory: factory,
+	}
+
+	for _, option := range options {
+		option(p)
+	}
+
+	P := &Pool{p}
+	runtime.SetFinalizer(P, recycle)
+	return P
+}

component/pool/pool_test.go

@@ -0,0 +1,73 @@
+package pool
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func lg() Factory {
+	initial := -1
+	return func(context.Context) (interface{}, error) {
+		initial++
+		return initial, nil
+	}
+}
+
+func TestPool_Basic(t *testing.T) {
+	g := lg()
+	pool := New(g)
+
+	elm, _ := pool.Get()
+	assert.Equal(t, 0, elm.(int))
+	pool.Put(elm)
+	elm, _ = pool.Get()
+	assert.Equal(t, 0, elm.(int))
+	elm, _ = pool.Get()
+	assert.Equal(t, 1, elm.(int))
+}
+
+func TestPool_MaxSize(t *testing.T) {
+	g := lg()
+	size := 5
+	pool := New(g, WithSize(size))
+
+	items := []interface{}{}
+
+	for i := 0; i < size; i++ {
+		item, _ := pool.Get()
+		items = append(items, item)
+	}
+
+	extra, _ := pool.Get()
+	assert.Equal(t, size, extra.(int))
+
+	for _, item := range items {
+		pool.Put(item)
+	}
+
+	pool.Put(extra)
+
+	for _, item := range items {
+		elm, _ := pool.Get()
+		assert.Equal(t, item.(int), elm.(int))
+	}
+}
+
+func TestPool_MaxAge(t *testing.T) {
+	g := lg()
+	pool := New(g, WithAge(20))
+
+	elm, _ := pool.Get()
+	pool.Put(elm)
+
+	elm, _ = pool.Get()
+	assert.Equal(t, 0, elm.(int))
+	pool.Put(elm)
+
+	time.Sleep(time.Millisecond * 22)
+	elm, _ = pool.Get()
+	assert.Equal(t, 1, elm.(int))
+}

component/process/process.go

@@ -0,0 +1,21 @@
+package process
+
+import (
+	"errors"
+	"net"
+)
+
+var (
+	ErrInvalidNetwork     = errors.New("invalid network")
+	ErrPlatformNotSupport = errors.New("not support on this platform")
+	ErrNotFound           = errors.New("process not found")
+)
+
+const (
+	TCP = "tcp"
+	UDP = "udp"
+)
+
+func FindProcessName(network string, srcIP net.IP, srcPort int) (string, error) {
+	return findProcessName(network, srcIP, srcPort)
+}

component/process/process_darwin.go

@@ -0,0 +1,104 @@
+package process
+
+import (
+	"encoding/binary"
+	"net"
+	"path/filepath"
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	procpidpathinfo     = 0xb
+	procpidpathinfosize = 1024
+	proccallnumpidinfo  = 0x2
+)
+
+func findProcessName(network string, ip net.IP, port int) (string, error) {
+	var spath string
+	switch network {
+	case TCP:
+		spath = "net.inet.tcp.pcblist_n"
+	case UDP:
+		spath = "net.inet.udp.pcblist_n"
+	default:
+		return "", ErrInvalidNetwork
+	}
+
+	isIPv4 := ip.To4() != nil
+
+	value, err := syscall.Sysctl(spath)
+	if err != nil {
+		return "", err
+	}
+
+	buf := []byte(value)
+
+	// from darwin-xnu/bsd/netinet/in_pcblist.c:get_pcblist_n
+	// size/offset are round up (aligned) to 8 bytes in darwin
+	// rup8(sizeof(xinpcb_n)) + rup8(sizeof(xsocket_n)) +
+	// 2 * rup8(sizeof(xsockbuf_n)) + rup8(sizeof(xsockstat_n))
+	itemSize := 384
+	if network == TCP {
+		// rup8(sizeof(xtcpcb_n))
+		itemSize += 208
+	}
+	// skip the first xinpgen(24 bytes) block
+	for i := 24; i+itemSize <= len(buf); i += itemSize {
+		// offset of xinpcb_n and xsocket_n
+		inp, so := i, i+104
+
+		srcPort := binary.BigEndian.Uint16(buf[inp+18 : inp+20])
+		if uint16(port) != srcPort {
+			continue
+		}
+
+		// xinpcb_n.inp_vflag
+		flag := buf[inp+44]
+
+		var srcIP net.IP
+		switch {
+		case flag&0x1 > 0 && isIPv4:
+			// ipv4
+			srcIP = net.IP(buf[inp+76 : inp+80])
+		case flag&0x2 > 0 && !isIPv4:
+			// ipv6
+			srcIP = net.IP(buf[inp+64 : inp+80])
+		default:
+			continue
+		}
+
+		if !ip.Equal(srcIP) {
+			continue
+		}
+
+		// xsocket_n.so_last_pid
+		pid := readNativeUint32(buf[so+68 : so+72])
+		return getExecPathFromPID(pid)
+	}
+
+	return "", ErrNotFound
+}
+
+func getExecPathFromPID(pid uint32) (string, error) {
+	buf := make([]byte, procpidpathinfosize)
+	_, _, errno := syscall.Syscall6(
+		syscall.SYS_PROC_INFO,
+		proccallnumpidinfo,
+		uintptr(pid),
+		procpidpathinfo,
+		0,
+		uintptr(unsafe.Pointer(&buf[0])),
+		procpidpathinfosize)
+	if errno != 0 {
+		return "", errno
+	}
+
+	return filepath.Base(unix.ByteSliceToString(buf)), nil
+}
+
+func readNativeUint32(b []byte) uint32 {
+	return *(*uint32)(unsafe.Pointer(&b[0]))
+}

component/process/process_freebsd_amd64.go

@@ -0,0 +1,234 @@
+package process
+
+import (
+	"encoding/binary"
+	"fmt"
+	"net"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"syscall"
+	"unsafe"
+
+	"github.com/Dreamacro/clash/log"
+)
+
+// store process name for when dealing with multiple PROCESS-NAME rules
+var (
+	defaultSearcher *searcher
+
+	once sync.Once
+)
+
+func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
+	once.Do(func() {
+		if err := initSearcher(); err != nil {
+			log.Errorln("Initialize PROCESS-NAME failed: %s", err.Error())
+			log.Warnln("All PROCESS-NAME rules will be skipped")
+			return
+		}
+	})
+
+	if defaultSearcher == nil {
+		return "", ErrPlatformNotSupport
+	}
+
+	var spath string
+	isTCP := network == TCP
+	switch network {
+	case TCP:
+		spath = "net.inet.tcp.pcblist"
+	case UDP:
+		spath = "net.inet.udp.pcblist"
+	default:
+		return "", ErrInvalidNetwork
+	}
+
+	value, err := syscall.Sysctl(spath)
+	if err != nil {
+		return "", err
+	}
+
+	buf := []byte(value)
+	pid, err := defaultSearcher.Search(buf, ip, uint16(srcPort), isTCP)
+	if err != nil {
+		return "", err
+	}
+
+	return getExecPathFromPID(pid)
+}
+
+func getExecPathFromPID(pid uint32) (string, error) {
+	buf := make([]byte, 2048)
+	size := uint64(len(buf))
+	// CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, pid
+	mib := [4]uint32{1, 14, 12, pid}
+
+	_, _, errno := syscall.Syscall6(
+		syscall.SYS___SYSCTL,
+		uintptr(unsafe.Pointer(&mib[0])),
+		uintptr(len(mib)),
+		uintptr(unsafe.Pointer(&buf[0])),
+		uintptr(unsafe.Pointer(&size)),
+		0,
+		0)
+	if errno != 0 || size == 0 {
+		return "", errno
+	}
+
+	return filepath.Base(string(buf[:size-1])), nil
+}
+
+func readNativeUint32(b []byte) uint32 {
+	return *(*uint32)(unsafe.Pointer(&b[0]))
+}
+
+type searcher struct {
+	// sizeof(struct xinpgen)
+	headSize int
+	// sizeof(struct xtcpcb)
+	tcpItemSize int
+	// sizeof(struct xinpcb)
+	udpItemSize  int
+	udpInpOffset int
+	port         int
+	ip           int
+	vflag        int
+	socket       int
+
+	// sizeof(struct xfile)
+	fileItemSize int
+	data         int
+	pid          int
+}
+
+func (s *searcher) Search(buf []byte, ip net.IP, port uint16, isTCP bool) (uint32, error) {
+	var itemSize int
+	var inpOffset int
+
+	if isTCP {
+		// struct xtcpcb
+		itemSize = s.tcpItemSize
+		inpOffset = 8
+	} else {
+		// struct xinpcb
+		itemSize = s.udpItemSize
+		inpOffset = s.udpInpOffset
+	}
+
+	isIPv4 := ip.To4() != nil
+	// skip the first xinpgen block
+	for i := s.headSize; i+itemSize <= len(buf); i += itemSize {
+		inp := i + inpOffset
+
+		srcPort := binary.BigEndian.Uint16(buf[inp+s.port : inp+s.port+2])
+
+		if port != srcPort {
+			continue
+		}
+
+		// xinpcb.inp_vflag
+		flag := buf[inp+s.vflag]
+
+		var srcIP net.IP
+		switch {
+		case flag&0x1 > 0 && isIPv4:
+			// ipv4
+			srcIP = net.IP(buf[inp+s.ip : inp+s.ip+4])
+		case flag&0x2 > 0 && !isIPv4:
+			// ipv6
+			srcIP = net.IP(buf[inp+s.ip-12 : inp+s.ip+4])
+		default:
+			continue
+		}
+
+		if !ip.Equal(srcIP) {
+			continue
+		}
+
+		// xsocket.xso_so, interpreted as big endian anyway since it's only used for comparison
+		socket := binary.BigEndian.Uint64(buf[inp+s.socket : inp+s.socket+8])
+		return s.searchSocketPid(socket)
+	}
+	return 0, ErrNotFound
+}
+
+func (s *searcher) searchSocketPid(socket uint64) (uint32, error) {
+	value, err := syscall.Sysctl("kern.file")
+	if err != nil {
+		return 0, err
+	}
+
+	buf := []byte(value)
+
+	// struct xfile
+	itemSize := s.fileItemSize
+	for i := 0; i+itemSize <= len(buf); i += itemSize {
+		// xfile.xf_data
+		data := binary.BigEndian.Uint64(buf[i+s.data : i+s.data+8])
+		if data == socket {
+			// xfile.xf_pid
+			pid := readNativeUint32(buf[i+s.pid : i+s.pid+4])
+			return pid, nil
+		}
+	}
+	return 0, ErrNotFound
+}
+
+func newSearcher(major int) *searcher {
+	var s *searcher
+	switch major {
+	case 11:
+		s = &searcher{
+			headSize:     32,
+			tcpItemSize:  1304,
+			udpItemSize:  632,
+			port:         198,
+			ip:           228,
+			vflag:        116,
+			socket:       88,
+			fileItemSize: 80,
+			data:         56,
+			pid:          8,
+			udpInpOffset: 8,
+		}
+	case 12:
+		fallthrough
+	case 13:
+		s = &searcher{
+			headSize:     64,
+			tcpItemSize:  744,
+			udpItemSize:  400,
+			port:         254,
+			ip:           284,
+			vflag:        392,
+			socket:       16,
+			fileItemSize: 128,
+			data:         56,
+			pid:          8,
+		}
+	}
+	return s
+}
+
+func initSearcher() error {
+	osRelease, err := syscall.Sysctl("kern.osrelease")
+	if err != nil {
+		return err
+	}
+
+	dot := strings.Index(osRelease, ".")
+	if dot != -1 {
+		osRelease = osRelease[:dot]
+	}
+	major, err := strconv.Atoi(osRelease)
+	if err != nil {
+		return err
+	}
+	defaultSearcher = newSearcher(major)
+	if defaultSearcher == nil {
+		return fmt.Errorf("unsupported freebsd version %d", major)
+	}
+	return nil
+}

component/process/process_linux.go

@@ -1,4 +1,4 @@
-package rules
+package process
 
 import (
 	"bytes"
@@ -9,15 +9,10 @@ import (
 	"net"
 	"path"
 	"path/filepath"
-	"strconv"
-	"strings"
 	"syscall"
 	"unsafe"
 
-	"github.com/Dreamacro/clash/common/cache"
 	"github.com/Dreamacro/clash/common/pool"
-	C "github.com/Dreamacro/clash/constant"
-	"github.com/Dreamacro/clash/log"
 )
 
 // from https://github.com/vishvananda/netlink/blob/bca67dfc8220b44ef582c9da4e9172bf1c9ec973/nl/nl_linux.go#L52-L62
@@ -30,7 +25,7 @@ func init() {
 	}
 }
 
-type SocketResolver func(metadata *C.Metadata) (inode, uid int, err error)
+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)
 
 // export for android
@@ -39,51 +34,6 @@ var (
 	DefaultProcessNameResolver ProcessNameResolver = resolveProcessNameByProcSearch
 )
 
-type Process struct {
-	adapter string
-	process string
-}
-
-func (p *Process) RuleType() C.RuleType {
-	return C.Process
-}
-
-func (p *Process) Match(metadata *C.Metadata) bool {
-	key := fmt.Sprintf("%s:%s:%s", metadata.NetWork.String(), metadata.SrcIP.String(), metadata.SrcPort)
-	cached, hit := processCache.Get(key)
-	if !hit {
-		processName, err := resolveProcessName(metadata)
-		if err != nil {
-			log.Debugln("[%s] Resolve process of %s failure: %s", C.Process.String(), key, err.Error())
-		}
-
-		processCache.Set(key, processName)
-
-		cached = processName
-	}
-
-	return strings.EqualFold(cached.(string), p.process)
-}
-
-func (p *Process) Adapter() string {
-	return p.adapter
-}
-
-func (p *Process) Payload() string {
-	return p.process
-}
-
-func (p *Process) ShouldResolveIP() bool {
-	return false
-}
-
-func NewProcess(process string, adapter string) (*Process, error) {
-	return &Process{
-		adapter: adapter,
-		process: process,
-	}, nil
-}
-
 const (
 	sizeOfSocketDiagRequest = syscall.SizeofNlMsghdr + 8 + 48
 	socketDiagByFamily      = 20
@@ -92,10 +42,8 @@ const (
 
 var nativeEndian binary.ByteOrder = binary.LittleEndian
 
-var processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64))
-
-func resolveProcessName(metadata *C.Metadata) (string, error) {
-	inode, uid, err := DefaultSocketResolver(metadata)
+func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
+	inode, uid, err := DefaultSocketResolver(network, ip, srcPort)
 	if err != nil {
 		return "", err
 	}
@@ -103,31 +51,26 @@ func resolveProcessName(metadata *C.Metadata) (string, error) {
 	return DefaultProcessNameResolver(inode, uid)
 }
 
-func resolveSocketByNetlink(metadata *C.Metadata) (int, int, error) {
+func resolveSocketByNetlink(network string, ip net.IP, srcPort int) (int, int, error) {
 	var family byte
 	var protocol byte
 
-	switch metadata.NetWork {
-	case C.TCP:
+	switch network {
+	case TCP:
 		protocol = syscall.IPPROTO_TCP
-	case C.UDP:
+	case UDP:
 		protocol = syscall.IPPROTO_UDP
 	default:
 		return 0, 0, ErrInvalidNetwork
 	}
 
-	if metadata.SrcIP.To4() != nil {
+	if ip.To4() != nil {
 		family = syscall.AF_INET
 	} else {
 		family = syscall.AF_INET6
 	}
 
-	srcPort, err := strconv.Atoi(metadata.SrcPort)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	req := packSocketDiagRequest(family, protocol, metadata.SrcIP, uint16(srcPort))
+	req := packSocketDiagRequest(family, protocol, ip, uint16(srcPort))
 
 	socket, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_DGRAM, syscall.NETLINK_INET_DIAG)
 	if err != nil {
@@ -257,7 +200,7 @@ func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
 				continue
 			}
 
-			if bytes.Compare(buffer[:n], socket) == 0 {
+			if bytes.Equal(buffer[:n], socket) {
 				cmdline, err := ioutil.ReadFile(path.Join(processPath, "cmdline"))
 				if err != nil {
 					return "", err

component/process/process_other.go

@@ -0,0 +1,10 @@
+// +build !darwin,!linux,!windows
+// +build !freebsd !amd64
+
+package process
+
+import "net"
+
+func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
+	return "", ErrPlatformNotSupport
+}

component/process/process_windows.go

@@ -1,18 +1,13 @@
-package rules
+package process
 
 import (
-	"errors"
 	"fmt"
 	"net"
 	"path/filepath"
-	"strconv"
-	"strings"
 	"sync"
 	"syscall"
 	"unsafe"
 
-	"github.com/Dreamacro/clash/common/cache"
-	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/log"
 
 	"golang.org/x/sys/windows"
@@ -27,12 +22,8 @@ const (
 )
 
 var (
-	processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64))
-	errNotFound  = errors.New("process not found")
-	matchMeta    = func(p *Process, m *C.Metadata) bool { return false }
-
-	getExTcpTable uintptr
-	getExUdpTable uintptr
+	getExTCPTable uintptr
+	getExUDPTable uintptr
 	queryProcName uintptr
 
 	once sync.Once
@@ -44,12 +35,12 @@ func initWin32API() error {
 		return fmt.Errorf("LoadLibrary iphlpapi.dll failed: %s", err.Error())
 	}
 
-	getExTcpTable, err = windows.GetProcAddress(h, tcpTableFunc)
+	getExTCPTable, err = windows.GetProcAddress(h, tcpTableFunc)
 	if err != nil {
 		return fmt.Errorf("GetProcAddress of %s failed: %s", tcpTableFunc, err.Error())
 	}
 
-	getExUdpTable, err = windows.GetProcAddress(h, udpTableFunc)
+	getExUDPTable, err = windows.GetProcAddress(h, udpTableFunc)
 	if err != nil {
 		return fmt.Errorf("GetProcAddress of %s failed: %s", udpTableFunc, err.Error())
 	}
@@ -67,47 +58,7 @@ func initWin32API() error {
 	return nil
 }
 
-type Process struct {
-	adapter string
-	process string
-}
-
-func (p *Process) RuleType() C.RuleType {
-	return C.Process
-}
-
-func (p *Process) Adapter() string {
-	return p.adapter
-}
-
-func (p *Process) Payload() string {
-	return p.process
-}
-
-func (p *Process) ShouldResolveIP() bool {
-	return false
-}
-
-func match(p *Process, metadata *C.Metadata) bool {
-	key := fmt.Sprintf("%s:%s:%s", metadata.NetWork.String(), metadata.SrcIP.String(), metadata.SrcPort)
-	cached, hit := processCache.Get(key)
-	if !hit {
-		processName, err := resolveProcessName(metadata)
-		if err != nil {
-			log.Debugln("[%s] Resolve process of %s failed: %s", C.Process.String(), key, err.Error())
-		}
-
-		processCache.Set(key, processName)
-		cached = processName
-	}
-	return strings.EqualFold(cached.(string), p.process)
-}
-
-func (p *Process) Match(metadata *C.Metadata) bool {
-	return matchMeta(p, metadata)
-}
-
-func NewProcess(process string, adapter string) (*Process, error) {
+func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
 	once.Do(func() {
 		err := initWin32API()
 		if err != nil {
@@ -115,16 +66,7 @@ func NewProcess(process string, adapter string) (*Process, error) {
 			log.Warnln("All PROCESS-NAMES rules will be skiped")
 			return
 		}
-		matchMeta = match
 	})
-	return &Process{
-		adapter: adapter,
-		process: process,
-	}, nil
-}
-
-func resolveProcessName(metadata *C.Metadata) (string, error) {
-	ip := metadata.SrcIP
 	family := windows.AF_INET
 	if ip.To4() == nil {
 		family = windows.AF_INET6
@@ -132,28 +74,23 @@ func resolveProcessName(metadata *C.Metadata) (string, error) {
 
 	var class int
 	var fn uintptr
-	switch metadata.NetWork {
-	case C.TCP:
-		fn = getExTcpTable
+	switch network {
+	case TCP:
+		fn = getExTCPTable
 		class = tcpTablePidConn
-	case C.UDP:
-		fn = getExUdpTable
+	case UDP:
+		fn = getExUDPTable
 		class = udpTablePid
 	default:
 		return "", ErrInvalidNetwork
 	}
 
-	srcPort, err := strconv.Atoi(metadata.SrcPort)
-	if err != nil {
-		return "", err
-	}
-
 	buf, err := getTransportTable(fn, family, class)
 	if err != nil {
 		return "", err
 	}
 
-	s := newSearcher(family == windows.AF_INET, metadata.NetWork == C.TCP)
+	s := newSearcher(family == windows.AF_INET, network == TCP)
 
 	pid, err := s.Search(buf, ip, uint16(srcPort))
 	if err != nil {
@@ -196,14 +133,15 @@ func (s *searcher) Search(b []byte, ip net.IP, port uint16) (uint32, error) {
 		}
 
 		srcIP := net.IP(row[s.ip : s.ip+s.ipSize])
-		if !ip.Equal(srcIP) {
+		// windows binds an unbound udp socket to 0.0.0.0/[::] while first sendto
+		if !ip.Equal(srcIP) && (!srcIP.IsUnspecified() || s.tcpState != -1) {
 			continue
 		}
 
 		pid := readNativeUint32(row[s.pid : s.pid+4])
 		return pid, nil
 	}
-	return 0, errNotFound
+	return 0, ErrNotFound
 }
 
 func newSearcher(isV4, isTCP bool) *searcher {

component/profile/cachefile/cache.go

@@ -0,0 +1,101 @@
+package cachefile
+
+import (
+	"bytes"
+	"encoding/gob"
+	"io/ioutil"
+	"os"
+	"sync"
+
+	"github.com/Dreamacro/clash/component/profile"
+	C "github.com/Dreamacro/clash/constant"
+	"github.com/Dreamacro/clash/log"
+)
+
+var (
+	initOnce     sync.Once
+	fileMode     os.FileMode = 0666
+	defaultCache *CacheFile
+)
+
+type cache struct {
+	Selected map[string]string
+}
+
+// CacheFile store and update the cache file
+type CacheFile struct {
+	path  string
+	model *cache
+	buf   *bytes.Buffer
+	mux   sync.Mutex
+}
+
+func (c *CacheFile) SetSelected(group, selected string) {
+	if !profile.StoreSelected.Load() {
+		return
+	}
+
+	c.mux.Lock()
+	defer c.mux.Unlock()
+
+	model := c.element()
+
+	model.Selected[group] = selected
+	c.buf.Reset()
+	if err := gob.NewEncoder(c.buf).Encode(model); err != nil {
+		log.Warnln("[CacheFile] encode gob failed: %s", err.Error())
+		return
+	}
+
+	if err := ioutil.WriteFile(c.path, c.buf.Bytes(), fileMode); err != nil {
+		log.Warnln("[CacheFile] write cache to %s failed: %s", c.path, err.Error())
+		return
+	}
+}
+
+func (c *CacheFile) SelectedMap() map[string]string {
+	if !profile.StoreSelected.Load() {
+		return nil
+	}
+
+	c.mux.Lock()
+	defer c.mux.Unlock()
+
+	model := c.element()
+
+	mapping := map[string]string{}
+	for k, v := range model.Selected {
+		mapping[k] = v
+	}
+	return mapping
+}
+
+func (c *CacheFile) element() *cache {
+	if c.model != nil {
+		return c.model
+	}
+
+	model := &cache{
+		Selected: map[string]string{},
+	}
+
+	if buf, err := ioutil.ReadFile(c.path); err == nil {
+		bufReader := bytes.NewBuffer(buf)
+		gob.NewDecoder(bufReader).Decode(model)
+	}
+
+	c.model = model
+	return c.model
+}
+
+// Cache return singleton of CacheFile
+func Cache() *CacheFile {
+	initOnce.Do(func() {
+		defaultCache = &CacheFile{
+			path: C.Path.Cache(),
+			buf:  &bytes.Buffer{},
+		}
+	})
+
+	return defaultCache
+}

component/profile/profile.go

@@ -0,0 +1,10 @@
+package profile
+
+import (
+	"go.uber.org/atomic"
+)
+
+var (
+	// StoreSelected is a global switch for storing selected proxy to cache
+	StoreSelected = atomic.NewBool(true)
+)

component/resolver/enhancer.go

@@ -0,0 +1,55 @@
+package resolver
+
+import (
+	"net"
+)
+
+var DefaultHostMapper Enhancer
+
+type Enhancer interface {
+	FakeIPEnabled() bool
+	MappingEnabled() bool
+	IsFakeIP(net.IP) bool
+	IsExistFakeIP(net.IP) bool
+	FindHostByIP(net.IP) (string, bool)
+}
+
+func FakeIPEnabled() bool {
+	if mapper := DefaultHostMapper; mapper != nil {
+		return mapper.FakeIPEnabled()
+	}
+
+	return false
+}
+
+func MappingEnabled() bool {
+	if mapper := DefaultHostMapper; mapper != nil {
+		return mapper.MappingEnabled()
+	}
+
+	return false
+}
+
+func IsFakeIP(ip net.IP) bool {
+	if mapper := DefaultHostMapper; mapper != nil {
+		return mapper.IsFakeIP(ip)
+	}
+
+	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)
+	}
+
+	return "", false
+}

component/resolver/resolver.go

@@ -1,9 +1,12 @@
 package resolver
 
 import (
+	"context"
 	"errors"
+	"math/rand"
 	"net"
 	"strings"
+	"time"
 
 	"github.com/Dreamacro/clash/component/trie"
 )
@@ -18,6 +21,9 @@ var (
 
 	// DefaultHosts aim to resolve hosts
 	DefaultHosts = trie.New()
+
+	// DefaultDNSTimeout defined the default dns request timeout
+	DefaultDNSTimeout = time.Second * 5
 )
 
 var (
@@ -52,18 +58,16 @@ func ResolveIPv4(host string) (net.IP, error) {
 		return DefaultResolver.ResolveIPv4(host)
 	}
 
-	ipAddrs, err := net.LookupIP(host)
+	ctx, cancel := context.WithTimeout(context.Background(), DefaultDNSTimeout)
+	defer cancel()
+	ipAddrs, err := net.DefaultResolver.LookupIP(ctx, "ip4", host)
 	if err != nil {
 		return nil, err
+	} else if len(ipAddrs) == 0 {
+		return nil, ErrIPNotFound
 	}
 
-	for _, ip := range ipAddrs {
-		if ip4 := ip.To4(); ip4 != nil {
-			return ip4, nil
-		}
-	}
-
-	return nil, ErrIPNotFound
+	return ipAddrs[rand.Intn(len(ipAddrs))], nil
 }
 
 // ResolveIPv6 with a host, return ipv6
@@ -90,31 +94,29 @@ func ResolveIPv6(host string) (net.IP, error) {
 		return DefaultResolver.ResolveIPv6(host)
 	}
 
-	ipAddrs, err := net.LookupIP(host)
+	ctx, cancel := context.WithTimeout(context.Background(), DefaultDNSTimeout)
+	defer cancel()
+	ipAddrs, err := net.DefaultResolver.LookupIP(ctx, "ip6", host)
 	if err != nil {
 		return nil, err
+	} else if len(ipAddrs) == 0 {
+		return nil, ErrIPNotFound
 	}
 
-	for _, ip := range ipAddrs {
-		if ip.To4() == nil {
-			return ip, nil
-		}
-	}
-
-	return nil, ErrIPNotFound
+	return ipAddrs[rand.Intn(len(ipAddrs))], nil
 }
 
-// ResolveIP with a host, return ip
-func ResolveIP(host string) (net.IP, error) {
+// ResolveIPWithResolver same as ResolveIP, but with a resolver
+func ResolveIPWithResolver(host string, r Resolver) (net.IP, error) {
 	if node := DefaultHosts.Search(host); node != nil {
 		return node.Data.(net.IP), nil
 	}
 
-	if DefaultResolver != nil {
+	if r != nil {
 		if DisableIPv6 {
-			return DefaultResolver.ResolveIPv4(host)
+			return r.ResolveIPv4(host)
 		}
-		return DefaultResolver.ResolveIP(host)
+		return r.ResolveIP(host)
 	} else if DisableIPv6 {
 		return ResolveIPv4(host)
 	}
@@ -131,3 +133,8 @@ func ResolveIP(host string) (net.IP, error) {
 
 	return ipAddr.IP, nil
 }
+
+// ResolveIP with a host, return ip
+func ResolveIP(host string) (net.IP, error) {
+	return ResolveIPWithResolver(host, DefaultResolver)
+}

component/snell/cipher.go

@@ -1,21 +0,0 @@
-package snell
-
-import (
-	"crypto/cipher"
-
-	"golang.org/x/crypto/argon2"
-)
-
-type snellCipher struct {
-	psk      []byte
-	makeAEAD func(key []byte) (cipher.AEAD, error)
-}
-
-func (sc *snellCipher) KeySize() int  { return 32 }
-func (sc *snellCipher) SaltSize() int { return 16 }
-func (sc *snellCipher) Encrypter(salt []byte) (cipher.AEAD, error) {
-	return sc.makeAEAD(argon2.IDKey(sc.psk, salt, 3, 8, 1, uint32(sc.KeySize())))
-}
-func (sc *snellCipher) Decrypter(salt []byte) (cipher.AEAD, error) {
-	return sc.makeAEAD(argon2.IDKey(sc.psk, salt, 3, 8, 1, uint32(sc.KeySize())))
-}

component/ssr/obfs/base.go

@@ -1,11 +0,0 @@
-package obfs
-
-// Base information for obfs
-type Base struct {
-	IVSize  int
-	Key     []byte
-	HeadLen int
-	Host    string
-	Port    int
-	Param   string
-}

component/ssr/obfs/http_simple.go

@@ -1,402 +0,0 @@
-package obfs
-
-import (
-	"bytes"
-	"encoding/hex"
-	"fmt"
-	"io"
-	"math/rand"
-	"strings"
-)
-
-type httpObfs struct {
-	*Base
-	firstRequest  bool
-	firstResponse bool
-	post          bool
-}
-
-func init() {
-	register("http_simple", newHTTPSimple)
-}
-
-func newHTTPSimple(b *Base) Obfs {
-	return &httpObfs{Base: b}
-}
-
-func (h *httpObfs) initForConn() Obfs {
-	return &httpObfs{
-		Base:          h.Base,
-		firstRequest:  true,
-		firstResponse: true,
-		post:          h.post,
-	}
-}
-
-func (h *httpObfs) GetObfsOverhead() int {
-	return 0
-}
-
-func (h *httpObfs) Decode(b []byte) ([]byte, bool, error) {
-	if h.firstResponse {
-		idx := bytes.Index(b, []byte("\r\n\r\n"))
-		if idx == -1 {
-			return nil, false, io.EOF
-		}
-		h.firstResponse = false
-		return b[idx+4:], false, nil
-	}
-	return b, false, nil
-}
-
-func (h *httpObfs) Encode(b []byte) ([]byte, error) {
-	if h.firstRequest {
-		bSize := len(b)
-		var headData []byte
-
-		if headSize := h.IVSize + h.HeadLen; bSize-headSize > 64 {
-			headData = make([]byte, headSize+rand.Intn(64))
-		} else {
-			headData = make([]byte, bSize)
-		}
-		copy(headData, b[:len(headData)])
-		host := h.Host
-		var customHead string
-
-		if len(h.Param) > 0 {
-			customHeads := strings.Split(h.Param, "#")
-			if len(customHeads) > 2 {
-				customHeads = customHeads[:2]
-			}
-			customHosts := h.Param
-			if len(customHeads) > 1 {
-				customHosts = customHeads[0]
-				customHead = customHeads[1]
-			}
-			hosts := strings.Split(customHosts, ",")
-			if len(hosts) > 0 {
-				host = strings.TrimSpace(hosts[rand.Intn(len(hosts))])
-			}
-		}
-
-		method := "GET /"
-		if h.post {
-			method = "POST /"
-		}
-		requestPathIndex := rand.Intn(len(requestPath)/2) * 2
-		httpBuf := fmt.Sprintf("%s%s%s%s HTTP/1.1\r\nHost: %s:%d\r\n",
-			method,
-			requestPath[requestPathIndex],
-			data2URLEncode(headData),
-			requestPath[requestPathIndex+1],
-			host, h.Port)
-		if len(customHead) > 0 {
-			httpBuf = httpBuf + strings.Replace(customHead, "\\n", "\r\n", -1) + "\r\n\r\n"
-		} else {
-			var contentType string
-			if h.post {
-				contentType = "Content-Type: multipart/form-data; boundary=" + boundary() + "\r\n"
-			}
-			httpBuf = httpBuf + "User-agent: " + requestUserAgent[rand.Intn(len(requestUserAgent))] + "\r\n" +
-				"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" +
-				"Accept-Language: en-US,en;q=0.8\r\n" +
-				"Accept-Encoding: gzip, deflate\r\n" +
-				contentType +
-				"DNT: 1\r\n" +
-				"Connection: keep-alive\r\n" +
-				"\r\n"
-		}
-
-		var encoded []byte
-		if len(headData) < bSize {
-			encoded = make([]byte, len(httpBuf)+(bSize-len(headData)))
-			copy(encoded, []byte(httpBuf))
-			copy(encoded[len(httpBuf):], b[len(headData):])
-		} else {
-			encoded = []byte(httpBuf)
-		}
-		h.firstRequest = false
-		return encoded, nil
-	}
-
-	return b, nil
-}
-
-func data2URLEncode(data []byte) (ret string) {
-	for i := 0; i < len(data); i++ {
-		ret = fmt.Sprintf("%s%%%s", ret, hex.EncodeToString([]byte{data[i]}))
-	}
-	return
-}
-
-func boundary() (ret string) {
-	set := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
-	for i := 0; i < 32; i++ {
-		ret = fmt.Sprintf("%s%c", ret, set[rand.Intn(len(set))])
-	}
-	return
-}
-
-var (
-	requestPath = []string{
-		"", "",
-		"login.php?redir=", "",
-		"register.php?code=", "",
-		"?keyword=", "",
-		"search?src=typd&q=", "&lang=en",
-		"s?ie=utf-8&f=8&rsv_bp=1&rsv_idx=1&ch=&bar=&wd=", "&rn=",
-		"post.php?id=", "&goto=view.php",
-	}
-	requestUserAgent = []string{
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.162 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.85 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; Moto C Build/NRD90M.059) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-G532M Build/MMB29T; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1.1; SM-J120M Build/LMY47X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; Moto G (5) Build/NPPS25.137-93-14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-G570M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0; CAM-L03 Build/HUAWEICAM-L03) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.75 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3",
-		"Mozilla/5.0 (Linux; Android 8.0.0; FIG-LX3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.237 Safari/534.10",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.1 Safari/533.2",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.81 Safari/537.36",
-		"Mozilla/5.0 (X11; Datanyze; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1.1; SM-J111M Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36",
-		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-J700M Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36",
-		"Mozilla/5.0 (X11; Linux i686) AppleWebKit/534.30 (KHTML, like Gecko) Slackware/Chrome/12.0.742.100 Safari/534.30",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36",
-		"Mozilla/5.0 (X11; Linux i686) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.100 Safari/534.30",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 8.0.0; WAS-LX3 Build/HUAWEIWAS-LX3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.57 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.1805 Safari/537.36 MVisionPlayer/1.0.0.0",
-		"Mozilla/5.0 (Linux; Android 7.0; TRT-LX3 Build/HUAWEITRT-LX3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0; vivo 1610 Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.124 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 4.4.2; de-de; SAMSUNG GT-I9195 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/1.5 Chrome/28.0.1500.94 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36",
-		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.110 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 8.0.0; ANE-LX3 Build/HUAWEIANE-LX3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (X11; U; Linux i586; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.1 Safari/533.2",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-G610M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.80 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-J500M Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0; vivo 1606 Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.124 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-G610M Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.1; vivo 1716 Build/N2G47H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.98 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.93 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-G570M Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0; MYA-L22 Build/HUAWEIMYA-L22) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1; A1601 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; TRT-LX2 Build/HUAWEITRT-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/59.0.3071.125 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.17 (KHTML, like Gecko) Chrome/10.0.649.0 Safari/534.17",
-		"Mozilla/5.0 (Linux; Android 6.0; CAM-L21 Build/HUAWEICAM-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36",
-		"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.3 Safari/534.24",
-		"Mozilla/5.0 (Linux; Android 7.1.2; Redmi 4X Build/N2G47H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 4.4.2; SM-G7102 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.109 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1; HUAWEI CUN-L22 Build/HUAWEICUN-L22; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1.1; A37fw Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-J730GM Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-G610F Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.1.2; Redmi Note 5A Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; Redmi Note 4 Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36",
-		"Mozilla/5.0 (Unknown; Linux) AppleWebKit/538.1 (KHTML, like Gecko) Chrome/v1.0.0 Safari/538.1",
-		"Mozilla/5.0 (Linux; Android 7.0; BLL-L22 Build/HUAWEIBLL-L22) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.91 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.0; SM-J710F Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.84 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-G532M Build/MMB29T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.91 Mobile Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.1.1; CPH1723 Build/N6F26Q) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.98 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 8.0.0; FIG-LX3 Build/HUAWEIFIG-LX3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 6.1; de-DE) AppleWebKit/534.17 (KHTML, like Gecko) Chrome/10.0.649.0 Safari/534.17",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.63 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 7.1; Mi A1 Build/N2G47H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.83 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36",
-		"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36 MVisionPlayer/1.0.0.0",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 5.1; A37f Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.93 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; CPH1607 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36",
-		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; vivo 1603 Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.83 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-G532M Build/MMB29T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; Redmi 4A Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/60.0.3112.116 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.157 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.143 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0.1; SM-G532G Build/MMB29T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.83 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.109 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36",
-		"Mozilla/5.0 (Linux; Android 6.0; vivo 1713 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.124 Mobile Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36",
-		"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36",
-	}
-)

component/ssr/obfs/obfs.go

@@ -1,37 +0,0 @@
-package obfs
-
-import (
-	"errors"
-	"fmt"
-	"strings"
-)
-
-var (
-	errTLS12TicketAuthIncorrectMagicNumber = errors.New("tls1.2_ticket_auth incorrect magic number")
-	errTLS12TicketAuthTooShortData         = errors.New("tls1.2_ticket_auth too short data")
-	errTLS12TicketAuthHMACError            = errors.New("tls1.2_ticket_auth hmac verifying failed")
-)
-
-// Obfs provides methods for decoding and encoding
-type Obfs interface {
-	initForConn() Obfs
-	GetObfsOverhead() int
-	Decode(b []byte) ([]byte, bool, error)
-	Encode(b []byte) ([]byte, error)
-}
-
-type obfsCreator func(b *Base) Obfs
-
-var obfsList = make(map[string]obfsCreator)
-
-func register(name string, c obfsCreator) {
-	obfsList[name] = c
-}
-
-// PickObfs returns an obfs of the given name
-func PickObfs(name string, b *Base) (Obfs, error) {
-	if obfsCreator, ok := obfsList[strings.ToLower(name)]; ok {
-		return obfsCreator(b), nil
-	}
-	return nil, fmt.Errorf("Obfs %s not supported", name)
-}

component/ssr/obfs/plain.go

@@ -1,25 +0,0 @@
-package obfs
-
-type plain struct{}
-
-func init() {
-	register("plain", newPlain)
-}
-
-func newPlain(b *Base) Obfs {
-	return &plain{}
-}
-
-func (p *plain) initForConn() Obfs { return &plain{} }
-
-func (p *plain) GetObfsOverhead() int {
-	return 0
-}
-
-func (p *plain) Encode(b []byte) ([]byte, error) {
-	return b, nil
-}
-
-func (p *plain) Decode(b []byte) ([]byte, bool, error) {
-	return b, false, nil
-}

component/ssr/obfs/random_head.go

@@ -1,75 +0,0 @@
-package obfs
-
-import (
-	"encoding/binary"
-	"hash/crc32"
-	"math/rand"
-)
-
-type randomHead struct {
-	*Base
-	firstRequest  bool
-	firstResponse bool
-	headerSent    bool
-	buffer        []byte
-}
-
-func init() {
-	register("random_head", newRandomHead)
-}
-
-func newRandomHead(b *Base) Obfs {
-	return &randomHead{Base: b}
-}
-
-func (r *randomHead) initForConn() Obfs {
-	return &randomHead{
-		Base:          r.Base,
-		firstRequest:  true,
-		firstResponse: true,
-	}
-}
-
-func (r *randomHead) GetObfsOverhead() int {
-	return 0
-}
-
-func (r *randomHead) Encode(b []byte) (encoded []byte, err error) {
-	if !r.firstRequest {
-		return b, nil
-	}
-
-	bSize := len(b)
-	if r.headerSent {
-		if bSize > 0 {
-			d := make([]byte, len(r.buffer)+bSize)
-			copy(d, r.buffer)
-			copy(d[len(r.buffer):], b)
-			r.buffer = d
-		} else {
-			encoded = r.buffer
-			r.buffer = nil
-			r.firstRequest = false
-		}
-	} else {
-		size := rand.Intn(96) + 8
-		encoded = make([]byte, size)
-		rand.Read(encoded)
-		crc := (0xFFFFFFFF - crc32.ChecksumIEEE(encoded[:size-4])) & 0xFFFFFFFF
-		binary.LittleEndian.PutUint32(encoded[size-4:], crc)
-
-		d := make([]byte, bSize)
-		copy(d, b)
-		r.buffer = d
-	}
-	r.headerSent = true
-	return encoded, nil
-}
-
-func (r *randomHead) Decode(b []byte) ([]byte, bool, error) {
-	if r.firstResponse {
-		r.firstResponse = false
-		return b, true, nil
-	}
-	return b, false, nil
-}

component/ssr/obfs/stream.go

@@ -1,72 +0,0 @@
-package obfs
-
-import (
-	"net"
-
-	"github.com/Dreamacro/clash/common/pool"
-)
-
-// NewConn wraps a stream-oriented net.Conn with obfs decoding/encoding
-func NewConn(c net.Conn, o Obfs) net.Conn {
-	return &Conn{Conn: c, Obfs: o.initForConn()}
-}
-
-// Conn represents an obfs connection
-type Conn struct {
-	net.Conn
-	Obfs
-	buf    []byte
-	offset int
-}
-
-func (c *Conn) Read(b []byte) (int, error) {
-	if c.buf != nil {
-		n := copy(b, c.buf[c.offset:])
-		c.offset += n
-		if c.offset == len(c.buf) {
-			pool.Put(c.buf)
-			c.buf = nil
-		}
-		return n, nil
-	}
-
-	buf := pool.Get(pool.RelayBufferSize)
-	defer pool.Put(buf)
-	n, err := c.Conn.Read(buf)
-	if err != nil {
-		return 0, err
-	}
-	decoded, sendback, err := c.Decode(buf[:n])
-	// decoded may be part of buf
-	decodedData := pool.Get(len(decoded))
-	copy(decodedData, decoded)
-	if err != nil {
-		pool.Put(decodedData)
-		return 0, err
-	}
-	if sendback {
-		c.Write(nil)
-		pool.Put(decodedData)
-		return 0, nil
-	}
-	n = copy(b, decodedData)
-	if len(decodedData) > len(b) {
-		c.buf = decodedData
-		c.offset = n
-	} else {
-		pool.Put(decodedData)
-	}
-	return n, err
-}
-
-func (c *Conn) Write(b []byte) (int, error) {
-	encoded, err := c.Encode(b)
-	if err != nil {
-		return 0, err
-	}
-	_, err = c.Conn.Write(encoded)
-	if err != nil {
-		return 0, err
-	}
-	return len(b), nil
-}

component/ssr/obfs/tls12_ticket_auth.go

@@ -1,291 +0,0 @@
-package obfs
-
-import (
-	"bytes"
-	"crypto/hmac"
-	"encoding/binary"
-	"fmt"
-	"io"
-	"log"
-	"math/rand"
-	"strings"
-	"time"
-
-	"github.com/Dreamacro/clash/common/pool"
-	"github.com/Dreamacro/clash/component/ssr/tools"
-)
-
-type tlsAuthData struct {
-	localClientID [32]byte
-}
-
-type tls12Ticket struct {
-	*Base
-	*tlsAuthData
-	handshakeStatus int
-	sendSaver       bytes.Buffer
-	recvBuffer      bytes.Buffer
-	buffer          bytes.Buffer
-}
-
-func init() {
-	register("tls1.2_ticket_auth", newTLS12Ticket)
-	register("tls1.2_ticket_fastauth", newTLS12Ticket)
-}
-
-func newTLS12Ticket(b *Base) Obfs {
-	return &tls12Ticket{
-		Base: b,
-	}
-}
-
-func (t *tls12Ticket) initForConn() Obfs {
-	r := &tls12Ticket{
-		Base:        t.Base,
-		tlsAuthData: &tlsAuthData{},
-	}
-	rand.Read(r.localClientID[:])
-	return r
-}
-
-func (t *tls12Ticket) GetObfsOverhead() int {
-	return 5
-}
-
-func (t *tls12Ticket) Decode(b []byte) ([]byte, bool, error) {
-	if t.handshakeStatus == -1 {
-		return b, false, nil
-	}
-	t.buffer.Reset()
-	if t.handshakeStatus == 8 {
-		t.recvBuffer.Write(b)
-		for t.recvBuffer.Len() > 5 {
-			var h [5]byte
-			t.recvBuffer.Read(h[:])
-			if !bytes.Equal(h[:3], []byte{0x17, 0x3, 0x3}) {
-				log.Println("incorrect magic number", h[:3], ", 0x170303 is expected")
-				return nil, false, errTLS12TicketAuthIncorrectMagicNumber
-			}
-			size := int(binary.BigEndian.Uint16(h[3:5]))
-			if t.recvBuffer.Len() < size {
-				// 不够读，下回再读吧
-				unread := t.recvBuffer.Bytes()
-				t.recvBuffer.Reset()
-				t.recvBuffer.Write(h[:])
-				t.recvBuffer.Write(unread)
-				break
-			}
-			d := pool.Get(size)
-			t.recvBuffer.Read(d)
-			t.buffer.Write(d)
-			pool.Put(d)
-		}
-		return t.buffer.Bytes(), false, nil
-	}
-
-	if len(b) < 11+32+1+32 {
-		return nil, false, errTLS12TicketAuthTooShortData
-	}
-
-	hash := t.hmacSHA1(b[11 : 11+22])
-
-	if !hmac.Equal(b[33:33+tools.HmacSHA1Len], hash) {
-		return nil, false, errTLS12TicketAuthHMACError
-	}
-	return nil, true, nil
-}
-
-func (t *tls12Ticket) Encode(b []byte) ([]byte, error) {
-	t.buffer.Reset()
-	switch t.handshakeStatus {
-	case 8:
-		if len(b) < 1024 {
-			d := []byte{0x17, 0x3, 0x3, 0, 0}
-			binary.BigEndian.PutUint16(d[3:5], uint16(len(b)&0xFFFF))
-			t.buffer.Write(d)
-			t.buffer.Write(b)
-			return t.buffer.Bytes(), nil
-		}
-		start := 0
-		var l int
-		for len(b)-start > 2048 {
-			l = rand.Intn(4096) + 100
-			if l > len(b)-start {
-				l = len(b) - start
-			}
-			packData(&t.buffer, b[start:start+l])
-			start += l
-		}
-		if len(b)-start > 0 {
-			l = len(b) - start
-			packData(&t.buffer, b[start:start+l])
-		}
-		return t.buffer.Bytes(), nil
-	case 1:
-		if len(b) > 0 {
-			if len(b) < 1024 {
-				packData(&t.sendSaver, b)
-			} else {
-				start := 0
-				var l int
-				for len(b)-start > 2048 {
-					l = rand.Intn(4096) + 100
-					if l > len(b)-start {
-						l = len(b) - start
-					}
-					packData(&t.buffer, b[start:start+l])
-					start += l
-				}
-				if len(b)-start > 0 {
-					l = len(b) - start
-					packData(&t.buffer, b[start:start+l])
-				}
-				io.Copy(&t.sendSaver, &t.buffer)
-			}
-			return []byte{}, nil
-		}
-		hmacData := make([]byte, 43)
-		handshakeFinish := []byte("\x14\x03\x03\x00\x01\x01\x16\x03\x03\x00\x20")
-		copy(hmacData, handshakeFinish)
-		rand.Read(hmacData[11:33])
-		h := t.hmacSHA1(hmacData[:33])
-		copy(hmacData[33:], h)
-		t.buffer.Write(hmacData)
-		io.Copy(&t.buffer, &t.sendSaver)
-		t.handshakeStatus = 8
-		return t.buffer.Bytes(), nil
-	case 0:
-		tlsData0 := []byte("\x00\x1c\xc0\x2b\xc0\x2f\xcc\xa9\xcc\xa8\xcc\x14\xcc\x13\xc0\x0a\xc0\x14\xc0\x09\xc0\x13\x00\x9c\x00\x35\x00\x2f\x00\x0a\x01\x00")
-		tlsData1 := []byte("\xff\x01\x00\x01\x00")
-		tlsData2 := []byte("\x00\x17\x00\x00\x00\x23\x00\xd0")
-		// tlsData3 := []byte("\x00\x0d\x00\x16\x00\x14\x06\x01\x06\x03\x05\x01\x05\x03\x04\x01\x04\x03\x03\x01\x03\x03\x02\x01\x02\x03\x00\x05\x00\x05\x01\x00\x00\x00\x00\x00\x12\x00\x00\x75\x50\x00\x00\x00\x0b\x00\x02\x01\x00\x00\x0a\x00\x06\x00\x04\x00\x17\x00\x18\x00\x15\x00\x66\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00")
-		tlsData3 := []byte("\x00\x0d\x00\x16\x00\x14\x06\x01\x06\x03\x05\x01\x05\x03\x04\x01\x04\x03\x03\x01\x03\x03\x02\x01\x02\x03\x00\x05\x00\x05\x01\x00\x00\x00\x00\x00\x12\x00\x00\x75\x50\x00\x00\x00\x0b\x00\x02\x01\x00\x00\x0a\x00\x06\x00\x04\x00\x17\x00\x18")
-
-		var tlsData [2048]byte
-		tlsDataLen := 0
-		copy(tlsData[0:], tlsData1)
-		tlsDataLen += len(tlsData1)
-		sni := t.sni(t.getHost())
-		copy(tlsData[tlsDataLen:], sni)
-		tlsDataLen += len(sni)
-		copy(tlsData[tlsDataLen:], tlsData2)
-		tlsDataLen += len(tlsData2)
-		ticketLen := rand.Intn(164)*2 + 64
-		tlsData[tlsDataLen-1] = uint8(ticketLen & 0xff)
-		tlsData[tlsDataLen-2] = uint8(ticketLen >> 8)
-		//ticketLen := 208
-		rand.Read(tlsData[tlsDataLen : tlsDataLen+ticketLen])
-		tlsDataLen += ticketLen
-		copy(tlsData[tlsDataLen:], tlsData3)
-		tlsDataLen += len(tlsData3)
-
-		length := 11 + 32 + 1 + 32 + len(tlsData0) + 2 + tlsDataLen
-		encodedData := make([]byte, length)
-		pdata := length - tlsDataLen
-		l := tlsDataLen
-		copy(encodedData[pdata:], tlsData[:tlsDataLen])
-		encodedData[pdata-1] = uint8(tlsDataLen)
-		encodedData[pdata-2] = uint8(tlsDataLen >> 8)
-		pdata -= 2
-		l += 2
-		copy(encodedData[pdata-len(tlsData0):], tlsData0)
-		pdata -= len(tlsData0)
-		l += len(tlsData0)
-		copy(encodedData[pdata-32:], t.localClientID[:])
-		pdata -= 32
-		l += 32
-		encodedData[pdata-1] = 0x20
-		pdata--
-		l++
-		copy(encodedData[pdata-32:], t.packAuthData())
-		pdata -= 32
-		l += 32
-		encodedData[pdata-1] = 0x3
-		encodedData[pdata-2] = 0x3 // tls version
-		pdata -= 2
-		l += 2
-		encodedData[pdata-1] = uint8(l)
-		encodedData[pdata-2] = uint8(l >> 8)
-		encodedData[pdata-3] = 0
-		encodedData[pdata-4] = 1
-		pdata -= 4
-		l += 4
-		encodedData[pdata-1] = uint8(l)
-		encodedData[pdata-2] = uint8(l >> 8)
-		pdata -= 2
-		l += 2
-		encodedData[pdata-1] = 0x1
-		encodedData[pdata-2] = 0x3 // tls version
-		pdata -= 2
-		l += 2
-		encodedData[pdata-1] = 0x16 // tls handshake
-		pdata--
-		l++
-		packData(&t.sendSaver, b)
-		t.handshakeStatus = 1
-		return encodedData, nil
-	default:
-		return nil, fmt.Errorf("unexpected handshake status: %d", t.handshakeStatus)
-	}
-}
-
-func (t *tls12Ticket) hmacSHA1(data []byte) []byte {
-	key := make([]byte, len(t.Key)+32)
-	copy(key, t.Key)
-	copy(key[len(t.Key):], t.localClientID[:])
-
-	sha1Data := tools.HmacSHA1(key, data)
-	return sha1Data[:tools.HmacSHA1Len]
-}
-
-func (t *tls12Ticket) sni(u string) []byte {
-	bURL := []byte(u)
-	length := len(bURL)
-	ret := make([]byte, length+9)
-	copy(ret[9:9+length], bURL)
-	binary.BigEndian.PutUint16(ret[7:], uint16(length&0xFFFF))
-	length += 3
-	binary.BigEndian.PutUint16(ret[4:], uint16(length&0xFFFF))
-	length += 2
-	binary.BigEndian.PutUint16(ret[2:], uint16(length&0xFFFF))
-	return ret
-}
-
-func (t *tls12Ticket) getHost() string {
-	host := t.Host
-	if len(t.Param) > 0 {
-		hosts := strings.Split(t.Param, ",")
-		if len(hosts) > 0 {
-
-			host = hosts[rand.Intn(len(hosts))]
-			host = strings.TrimSpace(host)
-		}
-	}
-	if len(host) > 0 && host[len(host)-1] >= byte('0') && host[len(host)-1] <= byte('9') && len(t.Param) == 0 {
-		host = ""
-	}
-	return host
-}
-
-func (t *tls12Ticket) packAuthData() (ret []byte) {
-	retSize := 32
-	ret = make([]byte, retSize)
-
-	now := time.Now().Unix()
-	binary.BigEndian.PutUint32(ret[:4], uint32(now))
-
-	rand.Read(ret[4 : 4+18])
-
-	hash := t.hmacSHA1(ret[:retSize-tools.HmacSHA1Len])
-	copy(ret[retSize-tools.HmacSHA1Len:], hash)
-
-	return
-}
-
-func packData(buffer *bytes.Buffer, suffix []byte) {
-	d := []byte{0x17, 0x3, 0x3, 0, 0}
-	binary.BigEndian.PutUint16(d[3:5], uint16(len(suffix)&0xFFFF))
-	buffer.Write(d)
-	buffer.Write(suffix)
-	return
-}

component/ssr/protocol/auth_aes128_md5.go

@@ -1,310 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"encoding/base64"
-	"encoding/binary"
-	"math/rand"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/Dreamacro/clash/common/pool"
-	"github.com/Dreamacro/clash/component/ssr/tools"
-	"github.com/Dreamacro/go-shadowsocks2/core"
-)
-
-type authAES128 struct {
-	*Base
-	*recvInfo
-	*authData
-	hasSentHeader bool
-	packID        uint32
-	userKey       []byte
-	uid           [4]byte
-	salt          string
-	hmac          hmacMethod
-	hashDigest    hashDigestMethod
-}
-
-func init() {
-	register("auth_aes128_md5", newAuthAES128MD5)
-}
-
-func newAuthAES128MD5(b *Base) Protocol {
-	return &authAES128{
-		Base:       b,
-		authData:   &authData{},
-		salt:       "auth_aes128_md5",
-		hmac:       tools.HmacMD5,
-		hashDigest: tools.MD5Sum,
-	}
-}
-
-func (a *authAES128) initForConn(iv []byte) Protocol {
-	return &authAES128{
-		Base: &Base{
-			IV:       iv,
-			Key:      a.Key,
-			TCPMss:   a.TCPMss,
-			Overhead: a.Overhead,
-			Param:    a.Param,
-		},
-		recvInfo:   &recvInfo{recvID: 1, buffer: new(bytes.Buffer)},
-		authData:   a.authData,
-		packID:     1,
-		salt:       a.salt,
-		hmac:       a.hmac,
-		hashDigest: a.hashDigest,
-	}
-}
-
-func (a *authAES128) GetProtocolOverhead() int {
-	return 9
-}
-
-func (a *authAES128) SetOverhead(overhead int) {
-	a.Overhead = overhead
-}
-
-func (a *authAES128) Decode(b []byte) ([]byte, int, error) {
-	a.buffer.Reset()
-	bSize := len(b)
-	readSize := 0
-	key := pool.Get(len(a.userKey) + 4)
-	defer pool.Put(key)
-	copy(key, a.userKey)
-	for bSize > 4 {
-		binary.LittleEndian.PutUint32(key[len(key)-4:], a.recvID)
-
-		h := a.hmac(key, b[:2])
-		if !bytes.Equal(h[:2], b[2:4]) {
-			return nil, 0, errAuthAES128IncorrectMAC
-		}
-
-		length := int(binary.LittleEndian.Uint16(b[:2]))
-		if length >= 8192 || length < 8 {
-			return nil, 0, errAuthAES128DataLengthError
-		}
-		if length > bSize {
-			break
-		}
-
-		h = a.hmac(key, b[:length-4])
-		if !bytes.Equal(h[:4], b[length-4:length]) {
-			return nil, 0, errAuthAES128IncorrectChecksum
-		}
-
-		a.recvID++
-		pos := int(b[4])
-		if pos < 255 {
-			pos += 4
-		} else {
-			pos = int(binary.LittleEndian.Uint16(b[5:7])) + 4
-		}
-
-		if pos > length-4 {
-			return nil, 0, errAuthAES128PositionTooLarge
-		}
-		a.buffer.Write(b[pos : length-4])
-		b = b[length:]
-		bSize -= length
-		readSize += length
-	}
-	return a.buffer.Bytes(), readSize, nil
-}
-
-func (a *authAES128) Encode(b []byte) ([]byte, error) {
-	a.buffer.Reset()
-	bSize := len(b)
-	offset := 0
-	if bSize > 0 && !a.hasSentHeader {
-		authSize := bSize
-		if authSize > 1200 {
-			authSize = 1200
-		}
-		a.hasSentHeader = true
-		a.buffer.Write(a.packAuthData(b[:authSize]))
-		bSize -= authSize
-		offset += authSize
-	}
-	const blockSize = 4096
-	for bSize > blockSize {
-		packSize, randSize := a.packedDataSize(b[offset : offset+blockSize])
-		pack := pool.Get(packSize)
-		a.packData(b[offset:offset+blockSize], pack, randSize)
-		a.buffer.Write(pack)
-		pool.Put(pack)
-		bSize -= blockSize
-		offset += blockSize
-	}
-	if bSize > 0 {
-		packSize, randSize := a.packedDataSize(b[offset:])
-		pack := pool.Get(packSize)
-		a.packData(b[offset:], pack, randSize)
-		a.buffer.Write(pack)
-		pool.Put(pack)
-	}
-	return a.buffer.Bytes(), nil
-}
-
-func (a *authAES128) DecodePacket(b []byte) ([]byte, int, error) {
-	bSize := len(b)
-	h := a.hmac(a.Key, b[:bSize-4])
-	if !bytes.Equal(h[:4], b[bSize-4:]) {
-		return nil, 0, errAuthAES128IncorrectMAC
-	}
-	return b[:bSize-4], bSize - 4, nil
-}
-
-func (a *authAES128) EncodePacket(b []byte) ([]byte, error) {
-	a.initUserKeyAndID()
-
-	var buf bytes.Buffer
-	buf.Write(b)
-	buf.Write(a.uid[:])
-	h := a.hmac(a.userKey, buf.Bytes())
-	buf.Write(h[:4])
-	return buf.Bytes(), nil
-}
-
-func (a *authAES128) initUserKeyAndID() {
-	if a.userKey == nil {
-		params := strings.Split(a.Param, ":")
-		if len(params) >= 2 {
-			if userID, err := strconv.ParseUint(params[0], 10, 32); err == nil {
-				binary.LittleEndian.PutUint32(a.uid[:], uint32(userID))
-				a.userKey = a.hashDigest([]byte(params[1]))
-			}
-		}
-
-		if a.userKey == nil {
-			rand.Read(a.uid[:])
-			a.userKey = make([]byte, len(a.Key))
-			copy(a.userKey, a.Key)
-		}
-	}
-}
-
-func (a *authAES128) packedDataSize(data []byte) (packSize, randSize int) {
-	dataSize := len(data)
-	randSize = 1
-	if dataSize <= 1200 {
-		if a.packID > 4 {
-			randSize += rand.Intn(32)
-		} else {
-			if dataSize > 900 {
-				randSize += rand.Intn(128)
-			} else {
-				randSize += rand.Intn(512)
-			}
-		}
-	}
-	packSize = randSize + dataSize + 8
-	return
-}
-
-func (a *authAES128) packData(data, ret []byte, randSize int) {
-	dataSize := len(data)
-	retSize := len(ret)
-	// 0~1, ret_size
-	binary.LittleEndian.PutUint16(ret[0:], uint16(retSize&0xFFFF))
-	// 2~3, hmac
-	key := pool.Get(len(a.userKey) + 4)
-	defer pool.Put(key)
-	copy(key, a.userKey)
-	binary.LittleEndian.PutUint32(key[len(key)-4:], a.packID)
-	h := a.hmac(key, ret[:2])
-	copy(ret[2:4], h[:2])
-	// 4~rand_size+4, rand number
-	rand.Read(ret[4 : 4+randSize])
-	// 4, rand_size
-	if randSize < 128 {
-		ret[4] = byte(randSize & 0xFF)
-	} else {
-		// 4, magic number 0xFF
-		ret[4] = 0xFF
-		// 5~6, rand_size
-		binary.LittleEndian.PutUint16(ret[5:], uint16(randSize&0xFFFF))
-	}
-	// rand_size+4~ret_size-4, data
-	if dataSize > 0 {
-		copy(ret[randSize+4:], data)
-	}
-	a.packID++
-	h = a.hmac(key, ret[:retSize-4])
-	copy(ret[retSize-4:], h[:4])
-}
-
-func (a *authAES128) packAuthData(data []byte) (ret []byte) {
-	dataSize := len(data)
-	var randSize int
-
-	if dataSize > 400 {
-		randSize = rand.Intn(512)
-	} else {
-		randSize = rand.Intn(1024)
-	}
-
-	dataOffset := randSize + 16 + 4 + 4 + 7
-	retSize := dataOffset + dataSize + 4
-	ret = make([]byte, retSize)
-	encrypt := make([]byte, 24)
-	key := make([]byte, len(a.IV)+len(a.Key))
-	copy(key, a.IV)
-	copy(key[len(a.IV):], a.Key)
-
-	rand.Read(ret[dataOffset-randSize:])
-	a.mutex.Lock()
-	defer a.mutex.Unlock()
-	a.connectionID++
-	if a.connectionID > 0xFF000000 {
-		a.clientID = nil
-	}
-	if len(a.clientID) == 0 {
-		a.clientID = make([]byte, 8)
-		rand.Read(a.clientID)
-		b := make([]byte, 4)
-		rand.Read(b)
-		a.connectionID = binary.LittleEndian.Uint32(b) & 0xFFFFFF
-	}
-	copy(encrypt[4:], a.clientID)
-	binary.LittleEndian.PutUint32(encrypt[8:], a.connectionID)
-
-	now := time.Now().Unix()
-	binary.LittleEndian.PutUint32(encrypt[:4], uint32(now))
-
-	binary.LittleEndian.PutUint16(encrypt[12:], uint16(retSize&0xFFFF))
-	binary.LittleEndian.PutUint16(encrypt[14:], uint16(randSize&0xFFFF))
-
-	a.initUserKeyAndID()
-
-	aesCipherKey := core.Kdf(base64.StdEncoding.EncodeToString(a.userKey)+a.salt, 16)
-	block, err := aes.NewCipher(aesCipherKey)
-	if err != nil {
-		return nil
-	}
-	encryptData := make([]byte, 16)
-	iv := make([]byte, aes.BlockSize)
-	cbc := cipher.NewCBCEncrypter(block, iv)
-	cbc.CryptBlocks(encryptData, encrypt[:16])
-	copy(encrypt[:4], a.uid[:])
-	copy(encrypt[4:4+16], encryptData)
-
-	h := a.hmac(key, encrypt[:20])
-	copy(encrypt[20:], h[:4])
-
-	rand.Read(ret[:1])
-	h = a.hmac(key, ret[:1])
-	copy(ret[1:], h[:7-1])
-
-	copy(ret[7:], encrypt)
-	copy(ret[dataOffset:], data)
-
-	h = a.hmac(a.userKey, ret[:retSize-4])
-	copy(ret[retSize-4:], h[:4])
-
-	return
-}

component/ssr/protocol/auth_aes128_sha1.go

@@ -1,22 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-
-	"github.com/Dreamacro/clash/component/ssr/tools"
-)
-
-func init() {
-	register("auth_aes128_sha1", newAuthAES128SHA1)
-}
-
-func newAuthAES128SHA1(b *Base) Protocol {
-	return &authAES128{
-		Base:       b,
-		recvInfo:   &recvInfo{buffer: new(bytes.Buffer)},
-		authData:   &authData{},
-		salt:       "auth_aes128_sha1",
-		hmac:       tools.HmacSHA1,
-		hashDigest: tools.SHA1Sum,
-	}
-}

component/ssr/protocol/auth_chain_a.go

@@ -1,428 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rc4"
-	"encoding/base64"
-	"encoding/binary"
-	"math/rand"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/Dreamacro/clash/common/pool"
-	"github.com/Dreamacro/clash/component/ssr/tools"
-	"github.com/Dreamacro/go-shadowsocks2/core"
-)
-
-type authChain struct {
-	*Base
-	*recvInfo
-	*authData
-	randomClient   shift128PlusContext
-	randomServer   shift128PlusContext
-	enc            cipher.Stream
-	dec            cipher.Stream
-	headerSent     bool
-	lastClientHash []byte
-	lastServerHash []byte
-	userKey        []byte
-	uid            [4]byte
-	salt           string
-	hmac           hmacMethod
-	hashDigest     hashDigestMethod
-	rnd            rndMethod
-	dataSizeList   []int
-	dataSizeList2  []int
-	chunkID        uint32
-}
-
-func init() {
-	register("auth_chain_a", newAuthChainA)
-}
-
-func newAuthChainA(b *Base) Protocol {
-	return &authChain{
-		Base:       b,
-		authData:   &authData{},
-		salt:       "auth_chain_a",
-		hmac:       tools.HmacMD5,
-		hashDigest: tools.SHA1Sum,
-		rnd:        authChainAGetRandLen,
-	}
-}
-
-func (a *authChain) initForConn(iv []byte) Protocol {
-	r := &authChain{
-		Base: &Base{
-			IV:       iv,
-			Key:      a.Key,
-			TCPMss:   a.TCPMss,
-			Overhead: a.Overhead,
-			Param:    a.Param,
-		},
-		recvInfo:   &recvInfo{recvID: 1, buffer: new(bytes.Buffer)},
-		authData:   a.authData,
-		salt:       a.salt,
-		hmac:       a.hmac,
-		hashDigest: a.hashDigest,
-		rnd:        a.rnd,
-	}
-	if r.salt == "auth_chain_b" {
-		initDataSize(r)
-	}
-	return r
-}
-
-func (a *authChain) GetProtocolOverhead() int {
-	return 4
-}
-
-func (a *authChain) SetOverhead(overhead int) {
-	a.Overhead = overhead
-}
-
-func (a *authChain) Decode(b []byte) ([]byte, int, error) {
-	a.buffer.Reset()
-	key := pool.Get(len(a.userKey) + 4)
-	defer pool.Put(key)
-	readSize := 0
-	copy(key, a.userKey)
-	for len(b) > 4 {
-		binary.LittleEndian.PutUint32(key[len(a.userKey):], a.recvID)
-		dataLen := (int)((uint(b[1]^a.lastServerHash[15]) << 8) + uint(b[0]^a.lastServerHash[14]))
-		randLen := a.getServerRandLen(dataLen, a.Overhead)
-		length := randLen + dataLen
-		if length >= 4096 {
-			return nil, 0, errAuthChainDataLengthError
-		}
-		length += 4
-		if length > len(b) {
-			break
-		}
-
-		hash := a.hmac(key, b[:length-2])
-		if !bytes.Equal(hash[:2], b[length-2:length]) {
-			return nil, 0, errAuthChainHMACError
-		}
-		var dataPos int
-		if dataLen > 0 && randLen > 0 {
-			dataPos = 2 + getRandStartPos(&a.randomServer, randLen)
-		} else {
-			dataPos = 2
-		}
-		d := pool.Get(dataLen)
-		a.dec.XORKeyStream(d, b[dataPos:dataPos+dataLen])
-		a.buffer.Write(d)
-		pool.Put(d)
-		if a.recvID == 1 {
-			a.TCPMss = int(binary.LittleEndian.Uint16(a.buffer.Next(2)))
-		}
-		a.lastServerHash = hash
-		a.recvID++
-		b = b[length:]
-		readSize += length
-	}
-	return a.buffer.Bytes(), readSize, nil
-}
-
-func (a *authChain) Encode(b []byte) ([]byte, error) {
-	a.buffer.Reset()
-	bSize := len(b)
-	offset := 0
-	if bSize > 0 && !a.headerSent {
-		headSize := 1200
-		if headSize > bSize {
-			headSize = bSize
-		}
-		a.buffer.Write(a.packAuthData(b[:headSize]))
-		offset += headSize
-		bSize -= headSize
-		a.headerSent = true
-	}
-	var unitSize = a.TCPMss - a.Overhead
-	for bSize > unitSize {
-		dataLen, randLength := a.packedDataLen(b[offset : offset+unitSize])
-		d := pool.Get(dataLen)
-		a.packData(d, b[offset:offset+unitSize], randLength)
-		a.buffer.Write(d)
-		pool.Put(d)
-		bSize -= unitSize
-		offset += unitSize
-	}
-	if bSize > 0 {
-		dataLen, randLength := a.packedDataLen(b[offset:])
-		d := pool.Get(dataLen)
-		a.packData(d, b[offset:], randLength)
-		a.buffer.Write(d)
-		pool.Put(d)
-	}
-	return a.buffer.Bytes(), nil
-}
-
-func (a *authChain) DecodePacket(b []byte) ([]byte, int, error) {
-	bSize := len(b)
-	if bSize < 9 {
-		return nil, 0, errAuthChainDataLengthError
-	}
-	h := a.hmac(a.userKey, b[:bSize-1])
-	if h[0] != b[bSize-1] {
-		return nil, 0, errAuthChainHMACError
-	}
-	hash := a.hmac(a.Key, b[bSize-8:bSize-1])
-	cipherKey := a.getRC4CipherKey(hash)
-	dec, _ := rc4.NewCipher(cipherKey)
-	randLength := udpGetRandLen(&a.randomServer, hash)
-	bSize -= 8 + randLength
-	dec.XORKeyStream(b, b[:bSize])
-	return b, bSize, nil
-}
-
-func (a *authChain) EncodePacket(b []byte) ([]byte, error) {
-	a.initUserKeyAndID()
-	authData := pool.Get(3)
-	defer pool.Put(authData)
-	rand.Read(authData)
-	hash := a.hmac(a.Key, authData)
-	uid := pool.Get(4)
-	defer pool.Put(uid)
-	for i := 0; i < 4; i++ {
-		uid[i] = a.uid[i] ^ hash[i]
-	}
-
-	cipherKey := a.getRC4CipherKey(hash)
-	enc, _ := rc4.NewCipher(cipherKey)
-	var buf bytes.Buffer
-	enc.XORKeyStream(b, b)
-	buf.Write(b)
-
-	randLength := udpGetRandLen(&a.randomClient, hash)
-	randBytes := pool.Get(randLength)
-	defer pool.Put(randBytes)
-	buf.Write(randBytes)
-
-	buf.Write(authData)
-	buf.Write(uid)
-
-	h := a.hmac(a.userKey, buf.Bytes())
-	buf.Write(h[:1])
-	return buf.Bytes(), nil
-}
-
-func (a *authChain) getRC4CipherKey(hash []byte) []byte {
-	base64UserKey := base64.StdEncoding.EncodeToString(a.userKey)
-	return a.calcRC4CipherKey(hash, base64UserKey)
-}
-
-func (a *authChain) calcRC4CipherKey(hash []byte, base64UserKey string) []byte {
-	password := pool.Get(len(base64UserKey) + base64.StdEncoding.EncodedLen(16))
-	defer pool.Put(password)
-	copy(password, base64UserKey)
-	base64.StdEncoding.Encode(password[len(base64UserKey):], hash[:16])
-	return core.Kdf(string(password), 16)
-}
-
-func (a *authChain) initUserKeyAndID() {
-	if a.userKey == nil {
-		params := strings.Split(a.Param, ":")
-		if len(params) >= 2 {
-			if userID, err := strconv.ParseUint(params[0], 10, 32); err == nil {
-				binary.LittleEndian.PutUint32(a.uid[:], uint32(userID))
-				a.userKey = []byte(params[1])[:len(a.userKey)]
-			}
-		}
-
-		if a.userKey == nil {
-			rand.Read(a.uid[:])
-			a.userKey = make([]byte, len(a.Key))
-			copy(a.userKey, a.Key)
-		}
-	}
-}
-
-func (a *authChain) getClientRandLen(dataLength int, overhead int) int {
-	return a.rnd(dataLength, &a.randomClient, a.lastClientHash, a.dataSizeList, a.dataSizeList2, overhead)
-}
-
-func (a *authChain) getServerRandLen(dataLength int, overhead int) int {
-	return a.rnd(dataLength, &a.randomServer, a.lastServerHash, a.dataSizeList, a.dataSizeList2, overhead)
-}
-
-func (a *authChain) packedDataLen(data []byte) (chunkLength, randLength int) {
-	dataLength := len(data)
-	randLength = a.getClientRandLen(dataLength, a.Overhead)
-	chunkLength = randLength + dataLength + 2 + 2
-	return
-}
-
-func (a *authChain) packData(outData []byte, data []byte, randLength int) {
-	dataLength := len(data)
-	outLength := randLength + dataLength + 2
-	outData[0] = byte(dataLength) ^ a.lastClientHash[14]
-	outData[1] = byte(dataLength>>8) ^ a.lastClientHash[15]
-
-	{
-		if dataLength > 0 {
-			randPart1Length := getRandStartPos(&a.randomClient, randLength)
-			rand.Read(outData[2 : 2+randPart1Length])
-			a.enc.XORKeyStream(outData[2+randPart1Length:], data)
-			rand.Read(outData[2+randPart1Length+dataLength : outLength])
-		} else {
-			rand.Read(outData[2 : 2+randLength])
-		}
-	}
-
-	userKeyLen := uint8(len(a.userKey))
-	key := pool.Get(int(userKeyLen + 4))
-	defer pool.Put(key)
-	copy(key, a.userKey)
-	a.chunkID++
-	binary.LittleEndian.PutUint32(key[userKeyLen:], a.chunkID)
-	a.lastClientHash = a.hmac(key, outData[:outLength])
-	copy(outData[outLength:], a.lastClientHash[:2])
-	return
-}
-
-const authHeadLength = 4 + 8 + 4 + 16 + 4
-
-func (a *authChain) packAuthData(data []byte) (outData []byte) {
-	outData = make([]byte, authHeadLength, authHeadLength+1500)
-	a.mutex.Lock()
-	defer a.mutex.Unlock()
-	a.connectionID++
-	if a.connectionID > 0xFF000000 {
-		rand.Read(a.clientID)
-		b := make([]byte, 4)
-		rand.Read(b)
-		a.connectionID = binary.LittleEndian.Uint32(b) & 0xFFFFFF
-	}
-	var key = make([]byte, len(a.IV)+len(a.Key))
-	copy(key, a.IV)
-	copy(key[len(a.IV):], a.Key)
-
-	encrypt := make([]byte, 20)
-	t := time.Now().Unix()
-	binary.LittleEndian.PutUint32(encrypt[:4], uint32(t))
-	copy(encrypt[4:8], a.clientID)
-	binary.LittleEndian.PutUint32(encrypt[8:], a.connectionID)
-	binary.LittleEndian.PutUint16(encrypt[12:], uint16(a.Overhead))
-	binary.LittleEndian.PutUint16(encrypt[14:], 0)
-
-	// first 12 bytes
-	{
-		rand.Read(outData[:4])
-		a.lastClientHash = a.hmac(key, outData[:4])
-		copy(outData[4:], a.lastClientHash[:8])
-	}
-	var base64UserKey string
-	// uid & 16 bytes auth data
-	{
-		a.initUserKeyAndID()
-		uid := make([]byte, 4)
-		for i := 0; i < 4; i++ {
-			uid[i] = a.uid[i] ^ a.lastClientHash[8+i]
-		}
-		base64UserKey = base64.StdEncoding.EncodeToString(a.userKey)
-		aesCipherKey := core.Kdf(base64UserKey+a.salt, 16)
-		block, err := aes.NewCipher(aesCipherKey)
-		if err != nil {
-			return
-		}
-		encryptData := make([]byte, 16)
-		iv := make([]byte, aes.BlockSize)
-		cbc := cipher.NewCBCEncrypter(block, iv)
-		cbc.CryptBlocks(encryptData, encrypt[:16])
-		copy(encrypt[:4], uid[:])
-		copy(encrypt[4:4+16], encryptData)
-	}
-	// final HMAC
-	{
-		a.lastServerHash = a.hmac(a.userKey, encrypt[:20])
-
-		copy(outData[12:], encrypt)
-		copy(outData[12+20:], a.lastServerHash[:4])
-	}
-
-	// init cipher
-	cipherKey := a.calcRC4CipherKey(a.lastClientHash, base64UserKey)
-	a.enc, _ = rc4.NewCipher(cipherKey)
-	a.dec, _ = rc4.NewCipher(cipherKey)
-
-	// data
-	chunkLength, randLength := a.packedDataLen(data)
-	if chunkLength <= 1500 {
-		outData = outData[:authHeadLength+chunkLength]
-	} else {
-		newOutData := make([]byte, authHeadLength+chunkLength)
-		copy(newOutData, outData[:authHeadLength])
-		outData = newOutData
-	}
-	a.packData(outData[authHeadLength:], data, randLength)
-	return
-}
-
-func getRandStartPos(random *shift128PlusContext, randLength int) int {
-	if randLength > 0 {
-		return int(random.Next() % 8589934609 % uint64(randLength))
-	}
-	return 0
-}
-
-func authChainAGetRandLen(dataLength int, random *shift128PlusContext, lastHash []byte, dataSizeList, dataSizeList2 []int, overhead int) int {
-	if dataLength > 1440 {
-		return 0
-	}
-	random.InitFromBinDatalen(lastHash[:16], dataLength)
-	if dataLength > 1300 {
-		return int(random.Next() % 31)
-	}
-	if dataLength > 900 {
-		return int(random.Next() % 127)
-	}
-	if dataLength > 400 {
-		return int(random.Next() % 521)
-	}
-	return int(random.Next() % 1021)
-}
-
-func udpGetRandLen(random *shift128PlusContext, lastHash []byte) int {
-	random.InitFromBin(lastHash[:16])
-	return int(random.Next() % 127)
-}
-
-type shift128PlusContext struct {
-	v [2]uint64
-}
-
-func (ctx *shift128PlusContext) InitFromBin(bin []byte) {
-	var fillBin [16]byte
-	copy(fillBin[:], bin)
-
-	ctx.v[0] = binary.LittleEndian.Uint64(fillBin[:8])
-	ctx.v[1] = binary.LittleEndian.Uint64(fillBin[8:])
-}
-
-func (ctx *shift128PlusContext) InitFromBinDatalen(bin []byte, datalen int) {
-	var fillBin [16]byte
-	copy(fillBin[:], bin)
-	binary.LittleEndian.PutUint16(fillBin[:2], uint16(datalen))
-
-	ctx.v[0] = binary.LittleEndian.Uint64(fillBin[:8])
-	ctx.v[1] = binary.LittleEndian.Uint64(fillBin[8:])
-
-	for i := 0; i < 4; i++ {
-		ctx.Next()
-	}
-}
-
-func (ctx *shift128PlusContext) Next() uint64 {
-	x := ctx.v[0]
-	y := ctx.v[1]
-	ctx.v[0] = y
-	x ^= x << 23
-	x ^= y ^ (x >> 17) ^ (y >> 26)
-	ctx.v[1] = x
-	return x + y
-}

component/ssr/protocol/auth_chain_b.go

@@ -1,72 +0,0 @@
-package protocol
-
-import (
-	"sort"
-
-	"github.com/Dreamacro/clash/component/ssr/tools"
-)
-
-func init() {
-	register("auth_chain_b", newAuthChainB)
-}
-
-func newAuthChainB(b *Base) Protocol {
-	return &authChain{
-		Base:       b,
-		authData:   &authData{},
-		salt:       "auth_chain_b",
-		hmac:       tools.HmacMD5,
-		hashDigest: tools.SHA1Sum,
-		rnd:        authChainBGetRandLen,
-	}
-}
-
-func initDataSize(r *authChain) {
-	random := &r.randomServer
-	random.InitFromBin(r.Key)
-	len := random.Next()%8 + 4
-	r.dataSizeList = make([]int, len)
-	for i := 0; i < int(len); i++ {
-		r.dataSizeList[i] = int(random.Next() % 2340 % 2040 % 1440)
-	}
-	sort.Ints(r.dataSizeList)
-
-	len = random.Next()%16 + 8
-	r.dataSizeList2 = make([]int, len)
-	for i := 0; i < int(len); i++ {
-		r.dataSizeList2[i] = int(random.Next() % 2340 % 2040 % 1440)
-	}
-	sort.Ints(r.dataSizeList2)
-}
-
-func authChainBGetRandLen(dataLength int, random *shift128PlusContext, lastHash []byte, dataSizeList, dataSizeList2 []int, overhead int) int {
-	if dataLength > 1440 {
-		return 0
-	}
-	random.InitFromBinDatalen(lastHash[:16], dataLength)
-	pos := sort.Search(len(dataSizeList), func(i int) bool { return dataSizeList[i] > dataLength+overhead })
-	finalPos := uint64(pos) + random.Next()%uint64(len(dataSizeList))
-	if finalPos < uint64(len(dataSizeList)) {
-		return dataSizeList[finalPos] - dataLength - overhead
-	}
-
-	pos = sort.Search(len(dataSizeList2), func(i int) bool { return dataSizeList2[i] > dataLength+overhead })
-	finalPos = uint64(pos) + random.Next()%uint64(len(dataSizeList2))
-	if finalPos < uint64(len(dataSizeList2)) {
-		return dataSizeList2[finalPos] - dataLength - overhead
-	}
-	if finalPos < uint64(pos+len(dataSizeList2)-1) {
-		return 0
-	}
-
-	if dataLength > 1300 {
-		return int(random.Next() % 31)
-	}
-	if dataLength > 900 {
-		return int(random.Next() % 127)
-	}
-	if dataLength > 400 {
-		return int(random.Next() % 521)
-	}
-	return int(random.Next() % 1021)
-}

component/ssr/protocol/auth_sha1_v4.go

@@ -1,253 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-	"encoding/binary"
-	"hash/adler32"
-	"hash/crc32"
-	"math/rand"
-	"time"
-
-	"github.com/Dreamacro/clash/common/pool"
-	"github.com/Dreamacro/clash/component/ssr/tools"
-)
-
-type authSHA1V4 struct {
-	*Base
-	*authData
-	headerSent bool
-	buffer     bytes.Buffer
-}
-
-func init() {
-	register("auth_sha1_v4", newAuthSHA1V4)
-}
-
-func newAuthSHA1V4(b *Base) Protocol {
-	return &authSHA1V4{Base: b, authData: &authData{}}
-}
-
-func (a *authSHA1V4) initForConn(iv []byte) Protocol {
-	return &authSHA1V4{
-		Base: &Base{
-			IV:       iv,
-			Key:      a.Key,
-			TCPMss:   a.TCPMss,
-			Overhead: a.Overhead,
-			Param:    a.Param,
-		},
-		authData: a.authData,
-	}
-}
-
-func (a *authSHA1V4) GetProtocolOverhead() int {
-	return 7
-}
-
-func (a *authSHA1V4) SetOverhead(overhead int) {
-	a.Overhead = overhead
-}
-
-func (a *authSHA1V4) Decode(b []byte) ([]byte, int, error) {
-	a.buffer.Reset()
-	bSize := len(b)
-	originalSize := bSize
-	for bSize > 4 {
-		crc := crc32.ChecksumIEEE(b[:2]) & 0xFFFF
-		if binary.LittleEndian.Uint16(b[2:4]) != uint16(crc) {
-			return nil, 0, errAuthSHA1v4CRC32Error
-		}
-		length := int(binary.BigEndian.Uint16(b[:2]))
-		if length >= 8192 || length < 8 {
-			return nil, 0, errAuthSHA1v4DataLengthError
-		}
-		if length > bSize {
-			break
-		}
-
-		if adler32.Checksum(b[:length-4]) == binary.LittleEndian.Uint32(b[length-4:]) {
-			pos := int(b[4])
-			if pos != 0xFF {
-				pos += 4
-			} else {
-				pos = int(binary.BigEndian.Uint16(b[5:5+2])) + 4
-			}
-			retSize := length - pos - 4
-			a.buffer.Write(b[pos : pos+retSize])
-			bSize -= length
-			b = b[length:]
-		} else {
-			return nil, 0, errAuthSHA1v4IncorrectChecksum
-		}
-	}
-	return a.buffer.Bytes(), originalSize - bSize, nil
-}
-
-func (a *authSHA1V4) Encode(b []byte) ([]byte, error) {
-	a.buffer.Reset()
-	bSize := len(b)
-	offset := 0
-	if !a.headerSent && bSize > 0 {
-		headSize := getHeadSize(b, 30)
-		if headSize > bSize {
-			headSize = bSize
-		}
-		a.buffer.Write(a.packAuthData(b[:headSize]))
-		offset += headSize
-		bSize -= headSize
-		a.headerSent = true
-	}
-	const blockSize = 4096
-	for bSize > blockSize {
-		packSize, randSize := a.packedDataSize(b[offset : offset+blockSize])
-		pack := pool.Get(packSize)
-		a.packData(b[offset:offset+blockSize], pack, randSize)
-		a.buffer.Write(pack)
-		pool.Put(pack)
-		offset += blockSize
-		bSize -= blockSize
-	}
-	if bSize > 0 {
-		packSize, randSize := a.packedDataSize(b[offset:])
-		pack := pool.Get(packSize)
-		a.packData(b[offset:], pack, randSize)
-		a.buffer.Write(pack)
-		pool.Put(pack)
-	}
-	return a.buffer.Bytes(), nil
-}
-
-func (a *authSHA1V4) DecodePacket(b []byte) ([]byte, int, error) {
-	return b, len(b), nil
-}
-
-func (a *authSHA1V4) EncodePacket(b []byte) ([]byte, error) {
-	return b, nil
-}
-
-func (a *authSHA1V4) packedDataSize(data []byte) (packSize, randSize int) {
-	dataSize := len(data)
-	randSize = 1
-	if dataSize <= 1300 {
-		if dataSize > 400 {
-			randSize += rand.Intn(128)
-		} else {
-			randSize += rand.Intn(1024)
-		}
-	}
-	packSize = randSize + dataSize + 8
-	return
-}
-
-func (a *authSHA1V4) packData(data, ret []byte, randSize int) {
-	dataSize := len(data)
-	retSize := len(ret)
-	// 0~1, ret size
-	binary.BigEndian.PutUint16(ret[:2], uint16(retSize&0xFFFF))
-	// 2~3, crc of ret size
-	crc := crc32.ChecksumIEEE(ret[:2]) & 0xFFFF
-	binary.LittleEndian.PutUint16(ret[2:4], uint16(crc))
-	// 4, rand size
-	if randSize < 128 {
-		ret[4] = uint8(randSize & 0xFF)
-	} else {
-		ret[4] = uint8(0xFF)
-		binary.BigEndian.PutUint16(ret[5:7], uint16(randSize&0xFFFF))
-	}
-	// (rand size+4)~(ret size-4), data
-	if dataSize > 0 {
-		copy(ret[randSize+4:], data)
-	}
-	// (ret size-4)~end, adler32 of full data
-	adler := adler32.Checksum(ret[:retSize-4])
-	binary.LittleEndian.PutUint32(ret[retSize-4:], adler)
-}
-
-func (a *authSHA1V4) packAuthData(data []byte) (ret []byte) {
-	dataSize := len(data)
-	randSize := 1
-	if dataSize <= 1300 {
-		if dataSize > 400 {
-			randSize += rand.Intn(128)
-		} else {
-			randSize += rand.Intn(1024)
-		}
-	}
-	dataOffset := randSize + 4 + 2
-	retSize := dataOffset + dataSize + 12 + tools.HmacSHA1Len
-	ret = make([]byte, retSize)
-	a.mutex.Lock()
-	defer a.mutex.Unlock()
-	a.connectionID++
-	if a.connectionID > 0xFF000000 {
-		a.clientID = nil
-	}
-	if len(a.clientID) == 0 {
-		a.clientID = make([]byte, 8)
-		rand.Read(a.clientID)
-		b := make([]byte, 4)
-		rand.Read(b)
-		a.connectionID = binary.LittleEndian.Uint32(b) & 0xFFFFFF
-	}
-	// 0~1, ret size
-	binary.BigEndian.PutUint16(ret[:2], uint16(retSize&0xFFFF))
-
-	// 2~6, crc of (ret size+salt+key)
-	salt := []byte("auth_sha1_v4")
-	crcData := make([]byte, len(salt)+len(a.Key)+2)
-	copy(crcData[:2], ret[:2])
-	copy(crcData[2:], salt)
-	copy(crcData[2+len(salt):], a.Key)
-	crc := crc32.ChecksumIEEE(crcData) & 0xFFFFFFFF
-	// 2~6, crc of (ret size+salt+key)
-	binary.LittleEndian.PutUint32(ret[2:], crc)
-	// 6~(rand size+6), rand numbers
-	rand.Read(ret[dataOffset-randSize : dataOffset])
-	// 6, rand size
-	if randSize < 128 {
-		ret[6] = byte(randSize & 0xFF)
-	} else {
-		// 6, magic number 0xFF
-		ret[6] = 0xFF
-		// 7~8, rand size
-		binary.BigEndian.PutUint16(ret[7:9], uint16(randSize&0xFFFF))
-	}
-	// rand size+6~(rand size+10), time stamp
-	now := time.Now().Unix()
-	binary.LittleEndian.PutUint32(ret[dataOffset:dataOffset+4], uint32(now))
-	// rand size+10~(rand size+14), client ID
-	copy(ret[dataOffset+4:dataOffset+4+4], a.clientID[:4])
-	// rand size+14~(rand size+18), connection ID
-	binary.LittleEndian.PutUint32(ret[dataOffset+8:dataOffset+8+4], a.connectionID)
-	// rand size+18~(rand size+18)+data length, data
-	copy(ret[dataOffset+12:], data)
-
-	key := make([]byte, len(a.IV)+len(a.Key))
-	copy(key, a.IV)
-	copy(key[len(a.IV):], a.Key)
-
-	h := tools.HmacSHA1(key, ret[:retSize-tools.HmacSHA1Len])
-	// (ret size-10)~(ret size)/(rand size)+18+data length~end, hmac
-	copy(ret[retSize-tools.HmacSHA1Len:], h[:tools.HmacSHA1Len])
-	return ret
-}
-
-func getHeadSize(data []byte, defaultValue int) int {
-	if data == nil || len(data) < 2 {
-		return defaultValue
-	}
-	headType := data[0] & 0x07
-	switch headType {
-	case 1:
-		// IPv4 1+4+2
-		return 7
-	case 4:
-		// IPv6 1+16+2
-		return 19
-	case 3:
-		// domain name, variant length
-		return 4 + int(data[1])
-	}
-
-	return defaultValue
-}

component/ssr/protocol/base.go

@@ -1,10 +0,0 @@
-package protocol
-
-// Base information for protocol
-type Base struct {
-	IV       []byte
-	Key      []byte
-	TCPMss   int
-	Overhead int
-	Param    string
-}

component/ssr/protocol/origin.go

@@ -1,36 +0,0 @@
-package protocol
-
-type origin struct{ *Base }
-
-func init() {
-	register("origin", newOrigin)
-}
-
-func newOrigin(b *Base) Protocol {
-	return &origin{}
-}
-
-func (o *origin) initForConn(iv []byte) Protocol { return &origin{} }
-
-func (o *origin) GetProtocolOverhead() int {
-	return 0
-}
-
-func (o *origin) SetOverhead(overhead int) {
-}
-
-func (o *origin) Decode(b []byte) ([]byte, int, error) {
-	return b, len(b), nil
-}
-
-func (o *origin) Encode(b []byte) ([]byte, error) {
-	return b, nil
-}
-
-func (o *origin) DecodePacket(b []byte) ([]byte, int, error) {
-	return b, len(b), nil
-}
-
-func (o *origin) EncodePacket(b []byte) ([]byte, error) {
-	return b, nil
-}

component/ssr/protocol/packet.go

@@ -1,42 +0,0 @@
-package protocol
-
-import (
-	"net"
-
-	"github.com/Dreamacro/clash/common/pool"
-)
-
-// NewPacketConn returns a net.NewPacketConn with protocol decoding/encoding
-func NewPacketConn(pc net.PacketConn, p Protocol) net.PacketConn {
-	return &PacketConn{PacketConn: pc, Protocol: p.initForConn(nil)}
-}
-
-// PacketConn represents a protocol packet connection
-type PacketConn struct {
-	net.PacketConn
-	Protocol
-}
-
-func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
-	buf := pool.Get(pool.RelayBufferSize)
-	defer pool.Put(buf)
-	buf, err := c.EncodePacket(b)
-	if err != nil {
-		return 0, err
-	}
-	_, err = c.PacketConn.WriteTo(buf, addr)
-	return len(b), err
-}
-
-func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
-	n, addr, err := c.PacketConn.ReadFrom(b)
-	if err != nil {
-		return n, addr, err
-	}
-	bb, length, err := c.DecodePacket(b[:n])
-	if err != nil {
-		return n, addr, err
-	}
-	copy(b, bb)
-	return length, addr, err
-}

component/ssr/protocol/protocol.go

@@ -1,63 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"strings"
-	"sync"
-)
-
-var (
-	errAuthAES128IncorrectMAC      = errors.New("auth_aes128_* post decrypt incorrect mac")
-	errAuthAES128DataLengthError   = errors.New("auth_aes128_* post decrypt length mismatch")
-	errAuthAES128IncorrectChecksum = errors.New("auth_aes128_* post decrypt incorrect checksum")
-	errAuthAES128PositionTooLarge  = errors.New("auth_aes128_* post decrypt position is too large")
-	errAuthSHA1v4CRC32Error        = errors.New("auth_sha1_v4 post decrypt data crc32 error")
-	errAuthSHA1v4DataLengthError   = errors.New("auth_sha1_v4 post decrypt data length error")
-	errAuthSHA1v4IncorrectChecksum = errors.New("auth_sha1_v4 post decrypt incorrect checksum")
-	errAuthChainDataLengthError    = errors.New("auth_chain_* post decrypt length mismatch")
-	errAuthChainHMACError          = errors.New("auth_chain_* post decrypt hmac error")
-)
-
-type authData struct {
-	clientID     []byte
-	connectionID uint32
-	mutex        sync.Mutex
-}
-
-type recvInfo struct {
-	recvID uint32
-	buffer *bytes.Buffer
-}
-
-type hmacMethod func(key []byte, data []byte) []byte
-type hashDigestMethod func(data []byte) []byte
-type rndMethod func(dataSize int, random *shift128PlusContext, lastHash []byte, dataSizeList, dataSizeList2 []int, overhead int) int
-
-// Protocol provides methods for decoding, encoding and iv setting
-type Protocol interface {
-	initForConn(iv []byte) Protocol
-	GetProtocolOverhead() int
-	SetOverhead(int)
-	Decode([]byte) ([]byte, int, error)
-	Encode([]byte) ([]byte, error)
-	DecodePacket([]byte) ([]byte, int, error)
-	EncodePacket([]byte) ([]byte, error)
-}
-
-type protocolCreator func(b *Base) Protocol
-
-var protocolList = make(map[string]protocolCreator)
-
-func register(name string, c protocolCreator) {
-	protocolList[name] = c
-}
-
-// PickProtocol returns a protocol of the given name
-func PickProtocol(name string, b *Base) (Protocol, error) {
-	if protocolCreator, ok := protocolList[strings.ToLower(name)]; ok {
-		return protocolCreator(b), nil
-	}
-	return nil, fmt.Errorf("Protocol %s not supported", name)
-}

component/ssr/protocol/stream.go

@@ -1,68 +0,0 @@
-package protocol
-
-import (
-	"bytes"
-	"net"
-
-	"github.com/Dreamacro/clash/common/pool"
-)
-
-// NewConn wraps a stream-oriented net.Conn with protocol decoding/encoding
-func NewConn(c net.Conn, p Protocol, iv []byte) net.Conn {
-	return &Conn{Conn: c, Protocol: p.initForConn(iv)}
-}
-
-// Conn represents a protocol connection
-type Conn struct {
-	net.Conn
-	Protocol
-	buf          []byte
-	offset       int
-	underDecoded bytes.Buffer
-}
-
-func (c *Conn) Read(b []byte) (int, error) {
-	if c.buf != nil {
-		n := copy(b, c.buf[c.offset:])
-		c.offset += n
-		if c.offset == len(c.buf) {
-			c.buf = nil
-		}
-		return n, nil
-	}
-	buf := pool.Get(pool.RelayBufferSize)
-	defer pool.Put(buf)
-	n, err := c.Conn.Read(buf)
-	if err != nil {
-		return 0, err
-	}
-	c.underDecoded.Write(buf[:n])
-	underDecoded := c.underDecoded.Bytes()
-	decoded, length, err := c.Decode(underDecoded)
-	if err != nil {
-		c.underDecoded.Reset()
-		return 0, nil
-	}
-	if length == 0 {
-		return 0, nil
-	}
-	c.underDecoded.Next(length)
-	n = copy(b, decoded)
-	if len(decoded) > len(b) {
-		c.buf = decoded
-		c.offset = n
-	}
-	return n, nil
-}
-
-func (c *Conn) Write(b []byte) (int, error) {
-	encoded, err := c.Encode(b)
-	if err != nil {
-		return 0, err
-	}
-	_, err = c.Conn.Write(encoded)
-	if err != nil {
-		return 0, err
-	}
-	return len(b), nil
-}

component/trie/domain.go

@@ -23,7 +23,7 @@ type DomainTrie struct {
 	root *Node
 }
 
-func validAndSplitDomain(domain string) ([]string, bool) {
+func ValidAndSplitDomain(domain string) ([]string, bool) {
 	if domain != "" && domain[len(domain)-1] == '.' {
 		return nil, false
 	}
@@ -54,7 +54,7 @@ func validAndSplitDomain(domain string) ([]string, bool) {
 // 4. .example.com
 // 5. +.example.com
 func (t *DomainTrie) Insert(domain string, data interface{}) error {
-	parts, valid := validAndSplitDomain(domain)
+	parts, valid := ValidAndSplitDomain(domain)
 	if !valid {
 		return ErrInvalidDomain
 	}
@@ -91,7 +91,7 @@ func (t *DomainTrie) insert(parts []string, data interface{}) {
 // 2. wildcard domain
 // 2. dot wildcard domain
 func (t *DomainTrie) Search(domain string) *Node {
-	parts, valid := validAndSplitDomain(domain)
+	parts, valid := ValidAndSplitDomain(domain)
 	if !valid || parts[0] == "" {
 		return nil
 	}
@@ -122,11 +122,7 @@ func (t *DomainTrie) search(node *Node, parts []string) *Node {
 		}
 	}
 
-	if c := node.getChild(dotWildcard); c != nil {
-		return c
-	}
-
-	return nil
+	return node.getChild(dotWildcard)
 }
 
 // New returns a new, empty Trie.

config/config.go

@@ -8,16 +8,17 @@ import (
 	"os"
 	"strings"
 
-	"github.com/Dreamacro/clash/adapters/outbound"
-	"github.com/Dreamacro/clash/adapters/outboundgroup"
-	"github.com/Dreamacro/clash/adapters/provider"
+	"github.com/Dreamacro/clash/adapter"
+	"github.com/Dreamacro/clash/adapter/outbound"
+	"github.com/Dreamacro/clash/adapter/outboundgroup"
+	"github.com/Dreamacro/clash/adapter/provider"
 	"github.com/Dreamacro/clash/component/auth"
 	"github.com/Dreamacro/clash/component/fakeip"
 	"github.com/Dreamacro/clash/component/trie"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/dns"
 	"github.com/Dreamacro/clash/log"
-	R "github.com/Dreamacro/clash/rules"
+	R "github.com/Dreamacro/clash/rule"
 	T "github.com/Dreamacro/clash/tunnel"
 
 	yaml "gopkg.in/yaml.v2"
@@ -30,7 +31,7 @@ type General struct {
 	Mode      T.TunnelMode `json:"mode"`
 	LogLevel  log.LogLevel `json:"log-level"`
 	IPv6      bool         `json:"ipv6"`
-	Interface string       `json:"interface-name"`
+	Interface string       `json:"-"`
 }
 
 // Inbound
@@ -38,6 +39,7 @@ 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"`
@@ -63,12 +65,19 @@ type DNS struct {
 	DefaultNameserver []dns.NameServer `yaml:"default-nameserver"`
 	FakeIPRange       *fakeip.Pool
 	Hosts             *trie.DomainTrie
+	NameServerPolicy  map[string]dns.NameServer
 }
 
 // FallbackFilter config
 type FallbackFilter struct {
 	GeoIP  bool         `yaml:"geoip"`
 	IPCIDR []*net.IPNet `yaml:"ipcidr"`
+	Domain []string     `yaml:"domain"`
+}
+
+// Profile config
+type Profile struct {
+	StoreSelected bool `yaml:"store-selected"`
 }
 
 // Experimental config
@@ -80,6 +89,7 @@ type Config struct {
 	DNS          *DNS
 	Experimental *Experimental
 	Hosts        *trie.DomainTrie
+	Profile      *Profile
 	Rules        []C.Rule
 	Users        []auth.AuthUser
 	Proxies      map[string]C.Proxy
@@ -98,17 +108,20 @@ type RawDNS struct {
 	FakeIPRange       string            `yaml:"fake-ip-range"`
 	FakeIPFilter      []string          `yaml:"fake-ip-filter"`
 	DefaultNameserver []string          `yaml:"default-nameserver"`
+	NameServerPolicy  map[string]string `yaml:"nameserver-policy"`
 }
 
 type RawFallbackFilter struct {
 	GeoIP  bool     `yaml:"geoip"`
 	IPCIDR []string `yaml:"ipcidr"`
+	Domain []string `yaml:"domain"`
 }
 
 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"`
@@ -125,6 +138,7 @@ type RawConfig struct {
 	Hosts         map[string]string                 `yaml:"hosts"`
 	DNS           RawDNS                            `yaml:"dns"`
 	Experimental  Experimental                      `yaml:"experimental"`
+	Profile       Profile                           `yaml:"profile"`
 	Proxy         []map[string]interface{}          `yaml:"proxies"`
 	ProxyGroup    []map[string]interface{}          `yaml:"proxy-groups"`
 	Rule          []string                          `yaml:"rules"`
@@ -141,7 +155,7 @@ func Parse(buf []byte) (*Config, error) {
 }
 
 func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
-	// config with some default value
+	// config with default value
 	rawCfg := &RawConfig{
 		AllowLan:       false,
 		BindAddress:    "*",
@@ -165,6 +179,9 @@ func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
 				"8.8.8.8",
 			},
 		},
+		Profile: Profile{
+			StoreSelected: true,
+		},
 	}
 
 	if err := yaml.Unmarshal(buf, &rawCfg); err != nil {
@@ -178,6 +195,7 @@ func ParseRawConfig(rawCfg *RawConfig) (*Config, error) {
 	config := &Config{}
 
 	config.Experimental = &rawCfg.Experimental
+	config.Profile = &rawCfg.Profile
 
 	general, err := parseGeneral(rawCfg)
 	if err != nil {
@@ -232,6 +250,7 @@ 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,
@@ -256,19 +275,19 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 	groupsConfig := cfg.ProxyGroup
 	providersConfig := cfg.ProxyProvider
 
-	proxies["DIRECT"] = outbound.NewProxy(outbound.NewDirect())
-	proxies["REJECT"] = outbound.NewProxy(outbound.NewReject())
+	proxies["DIRECT"] = adapter.NewProxy(outbound.NewDirect())
+	proxies["REJECT"] = adapter.NewProxy(outbound.NewReject())
 	proxyList = append(proxyList, "DIRECT", "REJECT")
 
 	// parse proxy
 	for idx, mapping := range proxiesConfig {
-		proxy, err := outbound.ParseProxy(mapping)
+		proxy, err := adapter.ParseProxy(mapping)
 		if err != nil {
-			return nil, nil, fmt.Errorf("Proxy %d: %w", idx, err)
+			return nil, nil, fmt.Errorf("proxy %d: %w", idx, err)
 		}
 
 		if _, exist := proxies[proxy.Name()]; exist {
-			return nil, nil, fmt.Errorf("Proxy %s is the duplicate name", proxy.Name())
+			return nil, nil, fmt.Errorf("proxy %s is the duplicate name", proxy.Name())
 		}
 		proxies[proxy.Name()] = proxy
 		proxyList = append(proxyList, proxy.Name())
@@ -278,7 +297,7 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 	for idx, mapping := range groupsConfig {
 		groupName, existName := mapping["name"].(string)
 		if !existName {
-			return nil, nil, fmt.Errorf("ProxyGroup %d: missing name", idx)
+			return nil, nil, fmt.Errorf("proxy group %d: missing name", idx)
 		}
 		proxyList = append(proxyList, groupName)
 	}
@@ -313,15 +332,15 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 	for idx, mapping := range groupsConfig {
 		group, err := outboundgroup.ParseProxyGroup(mapping, proxies, providersMap)
 		if err != nil {
-			return nil, nil, fmt.Errorf("ProxyGroup[%d]: %w", idx, err)
+			return nil, nil, fmt.Errorf("proxy group[%d]: %w", idx, err)
 		}
 
 		groupName := group.Name()
 		if _, exist := proxies[groupName]; exist {
-			return nil, nil, fmt.Errorf("ProxyGroup %s: the duplicate name", groupName)
+			return nil, nil, fmt.Errorf("proxy group %s: the duplicate name", groupName)
 		}
 
-		proxies[groupName] = outbound.NewProxy(group)
+		proxies[groupName] = adapter.NewProxy(group)
 	}
 
 	// initial compatible provider
@@ -340,12 +359,17 @@ 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})
-	proxies["GLOBAL"] = outbound.NewProxy(global)
+	global := outboundgroup.NewSelector(
+		&outboundgroup.GroupCommonOption{
+			Name: "GLOBAL",
+		},
+		[]provider.ProxyProvider{pd},
+	)
+	proxies["GLOBAL"] = adapter.NewProxy(global)
 	return proxies, providersMap, nil
 }
 
@@ -373,11 +397,11 @@ func parseRules(cfg *RawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
 			target = rule[2]
 			params = rule[3:]
 		default:
-			return nil, fmt.Errorf("Rules[%d] [%s] error: format invalid", idx, line)
+			return nil, fmt.Errorf("rules[%d] [%s] error: format invalid", idx, line)
 		}
 
 		if _, ok := proxies[target]; !ok {
-			return nil, fmt.Errorf("Rules[%d] [%s] error: proxy [%s] not found", idx, line, target)
+			return nil, fmt.Errorf("rules[%d] [%s] error: proxy [%s] not found", idx, line, target)
 		}
 
 		rule = trimArr(rule)
@@ -385,11 +409,7 @@ func parseRules(cfg *RawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
 
 		parsed, parseErr := R.ParseRule(rule[0], payload, target, params)
 		if parseErr != nil {
-			if parseErr == R.ErrPlatformNotSupport {
-				log.Warnln("Rules[%d] [%s] don't support current OS, skip", idx, line)
-				continue
-			}
-			return nil, fmt.Errorf("Rules[%d] [%s] error: %s", idx, line, parseErr.Error())
+			return nil, fmt.Errorf("rules[%d] [%s] error: %s", idx, line, parseErr.Error())
 		}
 
 		rules = append(rules, parsed)
@@ -403,7 +423,7 @@ func parseHosts(cfg *RawConfig) (*trie.DomainTrie, error) {
 
 	// add default hosts
 	if err := tree.Insert("localhost", net.IP{127, 0, 0, 1}); err != nil {
-		println(err.Error())
+		log.Errorln("insert localhost to host error: %s", err.Error())
 	}
 
 	if len(cfg.Hosts) != 0 {
@@ -483,6 +503,23 @@ func parseNameServer(servers []string) ([]dns.NameServer, error) {
 	return nameservers, nil
 }
 
+func parseNameServerPolicy(nsPolicy map[string]string) (map[string]dns.NameServer, error) {
+	policy := map[string]dns.NameServer{}
+
+	for domain, server := range nsPolicy {
+		nameservers, err := parseNameServer([]string{server})
+		if err != nil {
+			return nil, err
+		}
+		if _, valid := trie.ValidAndSplitDomain(domain); !valid {
+			return nil, fmt.Errorf("DNS ResoverRule invalid domain: %s", domain)
+		}
+		policy[domain] = nameservers[0]
+	}
+
+	return policy, nil
+}
+
 func parseFallbackIPCIDR(ips []string) ([]*net.IPNet, error) {
 	ipNets := []*net.IPNet{}
 
@@ -499,7 +536,7 @@ func parseFallbackIPCIDR(ips []string) ([]*net.IPNet, error) {
 
 func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 	if cfg.Enable && len(cfg.NameServer) == 0 {
-		return nil, fmt.Errorf("If DNS configuration is turned on, NameServer cannot be empty")
+		return nil, fmt.Errorf("if DNS configuration is turned on, NameServer cannot be empty")
 	}
 
 	dnsCfg := &DNS{
@@ -520,6 +557,10 @@ func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 		return nil, err
 	}
 
+	if dnsCfg.NameServerPolicy, err = parseNameServerPolicy(cfg.NameServerPolicy); err != nil {
+		return nil, err
+	}
+
 	if len(cfg.DefaultNameserver) == 0 {
 		return nil, errors.New("default nameserver should have at least one nameserver")
 	}
@@ -561,6 +602,7 @@ func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 	if fallbackip, err := parseFallbackIPCIDR(cfg.FallbackFilter.IPCIDR); err == nil {
 		dnsCfg.FallbackFilter.IPCIDR = fallbackip
 	}
+	dnsCfg.FallbackFilter.Domain = cfg.FallbackFilter.Domain
 
 	if cfg.UseHosts {
 		dnsCfg.Hosts = hosts

config/initial.go

@@ -12,7 +12,7 @@ import (
 )
 
 func downloadMMDB(path string) (err error) {
-	resp, err := http.Get("https://github.com/Dreamacro/maxmind-geoip/releases/latest/download/Country.mmdb")
+	resp, err := http.Get("https://cdn.jsdelivr.net/gh/Dreamacro/maxmind-geoip@release/Country.mmdb")
 	if err != nil {
 		return
 	}
@@ -32,18 +32,18 @@ func initMMDB() error {
 	if _, err := os.Stat(C.Path.MMDB()); os.IsNotExist(err) {
 		log.Infoln("Can't find MMDB, start download")
 		if err := downloadMMDB(C.Path.MMDB()); err != nil {
-			return fmt.Errorf("Can't download MMDB: %s", err.Error())
+			return fmt.Errorf("can't download MMDB: %s", err.Error())
 		}
 	}
 
 	if !mmdb.Verify() {
 		log.Warnln("MMDB invalid, remove and download")
 		if err := os.Remove(C.Path.MMDB()); err != nil {
-			return fmt.Errorf("Can't remove invalid MMDB: %s", err.Error())
+			return fmt.Errorf("can't remove invalid MMDB: %s", err.Error())
 		}
 
 		if err := downloadMMDB(C.Path.MMDB()); err != nil {
-			return fmt.Errorf("Can't download MMDB: %s", err.Error())
+			return fmt.Errorf("can't download MMDB: %s", err.Error())
 		}
 	}
 
@@ -55,7 +55,7 @@ func Init(dir string) error {
 	// initial homedir
 	if _, err := os.Stat(dir); os.IsNotExist(err) {
 		if err := os.MkdirAll(dir, 0777); err != nil {
-			return fmt.Errorf("Can't create config directory %s: %s", dir, err.Error())
+			return fmt.Errorf("can't create config directory %s: %s", dir, err.Error())
 		}
 	}
 
@@ -64,15 +64,15 @@ func Init(dir string) error {
 		log.Infoln("Can't find config, create a initial config file")
 		f, err := os.OpenFile(C.Path.Config(), os.O_CREATE|os.O_WRONLY, 0644)
 		if err != nil {
-			return fmt.Errorf("Can't create file %s: %s", C.Path.Config(), err.Error())
+			return fmt.Errorf("can't create file %s: %s", C.Path.Config(), err.Error())
 		}
-		f.Write([]byte(`port: 7890`))
+		f.Write([]byte(`mixed-port: 7890`))
 		f.Close()
 	}
 
 	// initial mmdb
 	if err := initMMDB(); err != nil {
-		return fmt.Errorf("Can't initial MMDB: %w", err)
+		return fmt.Errorf("can't initial MMDB: %w", err)
 	}
 	return nil
 }

config/utils.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/Dreamacro/clash/adapters/outboundgroup"
+	"github.com/Dreamacro/clash/adapter/outboundgroup"
 	"github.com/Dreamacro/clash/common/structure"
 )
 
@@ -15,15 +15,6 @@ func trimArr(arr []string) (r []string) {
 	return
 }
 
-func or(pointers ...*int) *int {
-	for _, p := range pointers {
-		if p != nil {
-			return p
-		}
-	}
-	return pointers[len(pointers)-1]
-}
-
 // Check if ProxyGroups form DAG(Directed Acyclic Graph), and sort all ProxyGroups by dependency order.
 // Meanwhile, record the original index in the config file.
 // If loop is detected, return an error with location of loop.
@@ -32,7 +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
@@ -74,7 +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)
 		}
@@ -153,5 +144,5 @@ func proxyGroupsDagSort(groupsConfig []map[string]interface{}) error {
 		loopElements = append(loopElements, name)
 		delete(graph, name)
 	}
-	return fmt.Errorf("Loop is detected in ProxyGroup, please check following ProxyGroups: %v", loopElements)
+	return fmt.Errorf("loop is detected in ProxyGroup, please check following ProxyGroups: %v", loopElements)
 }

constant/adapters.go

@@ -27,10 +27,9 @@ const (
 	LoadBalance
 )
 
-type ServerAdapter interface {
-	net.Conn
-	Metadata() *Metadata
-}
+const (
+	DefaultTCPTimeout = 5 * time.Second
+)
 
 type Connection interface {
 	Chains() Chain
@@ -50,6 +49,15 @@ func (c Chain) String() string {
 	}
 }
 
+func (c Chain) Last() string {
+	switch len(c) {
+	case 0:
+		return ""
+	default:
+		return c[0]
+	}
+}
+
 type Conn interface {
 	net.Conn
 	Connection
@@ -65,8 +73,21 @@ type PacketConn interface {
 type ProxyAdapter interface {
 	Name() string
 	Type() AdapterType
+
+	// StreamConn wraps a protocol around net.Conn with Metadata.
+	//
+	// Examples:
+	//	conn, _ := net.Dial("tcp", "host:port")
+	//	conn, _ = adapter.StreamConn(conn, metadata)
+	//
+	// It returns a C.Conn with protocol which start with
+	// a new session (if any)
 	StreamConn(c net.Conn, metadata *Metadata) (net.Conn, error)
+
+	// DialContext return a C.Conn with protocol which
+	// contains multiplexing-related reuse logic (if any)
 	DialContext(ctx context.Context, metadata *Metadata) (Conn, error)
+
 	DialUDP(metadata *Metadata) (PacketConn, error)
 	SupportUDP() bool
 	MarshalJSON() ([]byte, error)
@@ -137,7 +158,7 @@ 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/context.go

@@ -0,0 +1,23 @@
+package constant
+
+import (
+	"net"
+
+	"github.com/gofrs/uuid"
+)
+
+type PlainContext interface {
+	ID() uuid.UUID
+}
+
+type ConnContext interface {
+	PlainContext
+	Metadata() *Metadata
+	Conn() net.Conn
+}
+
+type PacketConnContext interface {
+	PlainContext
+	Metadata() *Metadata
+	PacketConn() net.PacketConn
+}

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"
 	}

constant/path.go

@@ -56,3 +56,7 @@ func (p *path) Resolve(path string) string {
 func (p *path) MMDB() string {
 	return P.Join(p.homeDir, "Country.mmdb")
 }
+
+func (p *path) Cache() string {
+	return P.Join(p.homeDir, ".cache")
+}