diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
new file mode 100644
index 00000000..26d318c3
--- /dev/null
+++ b/.github/workflows/linter.yml
@@ -0,0 +1,12 @@
+name: Linter
+on: [push, pull_request]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: latest
+          args: --disable-all -E govet -E gofumpt -E megacheck ./...
diff --git a/.github/workflows/go.yml b/.github/workflows/release.yml
similarity index 91%
rename from .github/workflows/go.yml
rename to .github/workflows/release.yml
index 401cd3de..d293e136 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/release.yml
@@ -1,9 +1,7 @@
-name: Go
+name: Release
 on: [push]
 jobs:
-
   build:
-    name: Build
     runs-on: ubuntu-latest
     steps:
       - name: Get latest go version
@@ -27,12 +25,9 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
 
-      - name: Get dependencies, run test and static check
+      - name: Get dependencies, run test
         run: |
           go test ./...
-          go vet ./...
-          go install honnef.co/go/tools/cmd/staticcheck@latest
-          staticcheck -- $(go list ./...)
 
       - name: SSH connection to Actions
         uses: P3TERX/ssh2actions@v1.0.0
@@ -76,5 +71,6 @@ jobs:
         with:
           keep_latest: 1
           delete_tags: true
+          delete_tag_pattern: tun
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 0593cfd0..52efcc9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,7 +12,7 @@ bin/*
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-# dep
+# go mod vendor
 vendor
 
 # GoLand
@@ -20,3 +20,6 @@ vendor
 
 # macOS file
 .DS_Store
+
+# test suite
+test/config/cache*
diff --git a/Makefile b/Makefile
index 413963ea..ab0d9fe5 100644
--- a/Makefile
+++ b/Makefile
@@ -112,5 +112,12 @@ $(zip_releases): %.zip : %
 all-arch: $(PLATFORM_LIST) $(WINDOWS_ARCH_LIST)
 
 releases: $(gz_releases) $(zip_releases)
+
+vet:
+	go vet ./...
+
+lint:
+	golangci-lint run --disable-all -E govet -E gofumpt -E megacheck ./...
+
 clean:
-	rm $(BINDIR)/*
\ No newline at end of file
+	rm -rf $(BINDIR)/*
\ No newline at end of file
diff --git a/adapter/adapter.go b/adapter/adapter.go
index 526866a5..26330163 100644
--- a/adapter/adapter.go
+++ b/adapter/adapter.go
@@ -36,12 +36,24 @@ func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
 // 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 {
-		p.alive.Store(false)
-	}
+	p.alive.Store(err == nil)
 	return conn, err
 }
 
+// DialUDP implements C.ProxyAdapter
+func (p *Proxy) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultUDPTimeout)
+	defer cancel()
+	return p.ListenPacketContext(ctx, metadata)
+}
+
+// ListenPacketContext implements C.ProxyAdapter
+func (p *Proxy) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := p.ProxyAdapter.ListenPacketContext(ctx, metadata)
+	p.alive.Store(err == nil)
+	return pc, err
+}
+
 // DelayHistory implements C.Proxy
 func (p *Proxy) DelayHistory() []C.DelayHistory {
 	queue := p.history.Copy()
diff --git a/adapter/outbound/base.go b/adapter/outbound/base.go
index a001d799..22c0142b 100644
--- a/adapter/outbound/base.go
+++ b/adapter/outbound/base.go
@@ -1,6 +1,7 @@
 package outbound
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"net"
@@ -30,8 +31,8 @@ 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) {
+// ListenPacketContext implements C.ProxyAdapter
+func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
 	return nil, errors.New("no support")
 }
 
diff --git a/adapter/outbound/direct.go b/adapter/outbound/direct.go
index 4b53e306..42433c41 100644
--- a/adapter/outbound/direct.go
+++ b/adapter/outbound/direct.go
@@ -22,9 +22,9 @@ 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(context.Background(), "udp", "")
+// ListenPacketContext implements C.ProxyAdapter
+func (d *Direct) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "")
 	if err != nil {
 		return nil, err
 	}
diff --git a/adapter/outbound/reject.go b/adapter/outbound/reject.go
index 36750496..a97c6c71 100644
--- a/adapter/outbound/reject.go
+++ b/adapter/outbound/reject.go
@@ -19,8 +19,8 @@ func (r *Reject) DialContext(ctx context.Context, metadata *C.Metadata) (C.Conn,
 	return NewConn(&NopConn{}, r), nil
 }
 
-// DialUDP implements C.ProxyAdapter
-func (r *Reject) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
+// ListenPacketContext implements C.ProxyAdapter
+func (r *Reject) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
 	return nil, errors.New("match reject rule")
 }
 
diff --git a/adapter/outbound/shadowsocks.go b/adapter/outbound/shadowsocks.go
index 64b431a9..0194954e 100644
--- a/adapter/outbound/shadowsocks.go
+++ b/adapter/outbound/shadowsocks.go
@@ -87,9 +87,9 @@ func (ss *ShadowSocks) DialContext(ctx context.Context, metadata *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(context.Background(), "udp", "")
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *ShadowSocks) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "")
 	if err != nil {
 		return nil, err
 	}
diff --git a/adapter/outbound/shadowsocksr.go b/adapter/outbound/shadowsocksr.go
index 9ba8bc22..fb0dd7a5 100644
--- a/adapter/outbound/shadowsocksr.go
+++ b/adapter/outbound/shadowsocksr.go
@@ -72,9 +72,9 @@ func (ssr *ShadowSocksR) DialContext(ctx context.Context, metadata *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(context.Background(), "udp", "")
+// ListenPacketContext implements C.ProxyAdapter
+func (ssr *ShadowSocksR) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := dialer.ListenPacket(ctx, "udp", "")
 	if err != nil {
 		return nil, err
 	}
diff --git a/adapter/outbound/socks5.go b/adapter/outbound/socks5.go
index 1402c618..7714c5c5 100644
--- a/adapter/outbound/socks5.go
+++ b/adapter/outbound/socks5.go
@@ -6,7 +6,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"strconv"
 
@@ -77,10 +76,8 @@ func (ss *Socks5) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Co
 	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(), C.DefaultTCPTimeout)
-	defer cancel()
+// ListenPacketContext implements C.ProxyAdapter
+func (ss *Socks5) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (_ C.PacketConn, err error) {
 	c, err := dialer.DialContext(ctx, "tcp", ss.addr)
 	if err != nil {
 		err = fmt.Errorf("%s connect error: %w", ss.addr, err)
@@ -110,13 +107,13 @@ func (ss *Socks5) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		return
 	}
 
-	pc, err := dialer.ListenPacket(context.Background(), "udp", "")
+	pc, err := dialer.ListenPacket(ctx, "udp", "")
 	if err != nil {
 		return
 	}
 
 	go func() {
-		io.Copy(ioutil.Discard, c)
+		io.Copy(io.Discard, c)
 		c.Close()
 		// A UDP association terminates when the TCP connection that the UDP
 		// ASSOCIATE request arrived on terminates. RFC1928
diff --git a/adapter/outbound/trojan.go b/adapter/outbound/trojan.go
index afed410f..8bea0cc8 100644
--- a/adapter/outbound/trojan.go
+++ b/adapter/outbound/trojan.go
@@ -5,6 +5,7 @@ import (
 	"crypto/tls"
 	"fmt"
 	"net"
+	"net/http"
 	"strconv"
 
 	"github.com/Dreamacro/clash/component/dialer"
@@ -18,6 +19,7 @@ import (
 type Trojan struct {
 	*Base
 	instance *trojan.Trojan
+	option   *TrojanOption
 
 	// for gun mux
 	gunTLSConfig *tls.Config
@@ -36,6 +38,34 @@ type TrojanOption struct {
 	UDP            bool        `proxy:"udp,omitempty"`
 	Network        string      `proxy:"network,omitempty"`
 	GrpcOpts       GrpcOptions `proxy:"grpc-opts,omitempty"`
+	WSOpts         WSOptions   `proxy:"ws-opts,omitempty"`
+}
+
+func (t *Trojan) plainStream(c net.Conn) (net.Conn, error) {
+	if t.option.Network == "ws" {
+		host, port, _ := net.SplitHostPort(t.addr)
+		wsOpts := &trojan.WebsocketOption{
+			Host: host,
+			Port: port,
+			Path: t.option.WSOpts.Path,
+		}
+
+		if t.option.SNI != "" {
+			wsOpts.Host = t.option.SNI
+		}
+
+		if len(t.option.WSOpts.Headers) != 0 {
+			header := http.Header{}
+			for key, value := range t.option.WSOpts.Headers {
+				header.Add(key, value)
+			}
+			wsOpts.Headers = header
+		}
+
+		return t.instance.StreamWebsocketConn(c, wsOpts)
+	}
+
+	return t.instance.StreamConn(c)
 }
 
 // StreamConn implements C.ProxyAdapter
@@ -44,7 +74,7 @@ func (t *Trojan) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error)
 	if t.transport != nil {
 		c, err = gun.StreamGunWithConn(c, t.gunTLSConfig, t.gunConfig)
 	} else {
-		c, err = t.instance.StreamConn(c)
+		c, err = t.plainStream(c)
 	}
 
 	if err != nil {
@@ -88,8 +118,8 @@ func (t *Trojan) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Con
 	return NewConn(c, t), err
 }
 
-// DialUDP implements C.ProxyAdapter
-func (t *Trojan) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
+// ListenPacketContext implements C.ProxyAdapter
+func (t *Trojan) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (_ C.PacketConn, err error) {
 	var c net.Conn
 
 	// grpc transport
@@ -100,15 +130,13 @@ func (t *Trojan) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 		}
 		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)
+		c, err = t.plainStream(c)
 		if err != nil {
 			return nil, fmt.Errorf("%s connect error: %w", t.addr, err)
 		}
@@ -145,6 +173,7 @@ func NewTrojan(option TrojanOption) (*Trojan, error) {
 			udp:  option.UDP,
 		},
 		instance: trojan.New(tOption),
+		option:   &option,
 	}
 
 	if option.Network == "grpc" {
diff --git a/adapter/outbound/vless.go b/adapter/outbound/vless.go
index c148798f..2cac7095 100644
--- a/adapter/outbound/vless.go
+++ b/adapter/outbound/vless.go
@@ -79,8 +79,16 @@ func (v *Vless) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 
 		if v.option.TLS {
 			wsOpts.TLS = true
-			wsOpts.SkipCertVerify = v.option.SkipCertVerify
-			wsOpts.ServerName = v.option.ServerName
+			wsOpts.TLSConfig = &tls.Config{
+				ServerName:         host,
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				NextProtos:         []string{"http/1.1"},
+			}
+			if v.option.ServerName != "" {
+				wsOpts.TLSConfig.ServerName = v.option.ServerName
+			} else if host := wsOpts.Headers.Get("Host"); host != "" {
+				wsOpts.TLSConfig.ServerName = host
+			}
 		}
 		c, err = vmess.StreamWebsocketConn(c, wsOpts)
 	case "http":
diff --git a/adapter/outbound/vmess.go b/adapter/outbound/vmess.go
index 6ca82c15..b4db00ad 100644
--- a/adapter/outbound/vmess.go
+++ b/adapter/outbound/vmess.go
@@ -31,23 +31,25 @@ type Vmess struct {
 }
 
 type VmessOption struct {
-	Name           string            `proxy:"name"`
-	Server         string            `proxy:"server"`
-	Port           int               `proxy:"port"`
-	UUID           string            `proxy:"uuid"`
-	AlterID        int               `proxy:"alterId"`
-	Cipher         string            `proxy:"cipher"`
-	TLS            bool              `proxy:"tls,omitempty"`
-	UDP            bool              `proxy:"udp,omitempty"`
-	Network        string            `proxy:"network,omitempty"`
-	HTTPOpts       HTTPOptions       `proxy:"http-opts,omitempty"`
-	HTTP2Opts      HTTP2Options      `proxy:"h2-opts,omitempty"`
-	GrpcOpts       GrpcOptions       `proxy:"grpc-opts,omitempty"`
-	WSOpts         WSOptions         `proxy:"ws-opts,omitempty"`
-	WSPath         string            `proxy:"ws-path,omitempty"`
-	WSHeaders      map[string]string `proxy:"ws-headers,omitempty"`
-	SkipCertVerify bool              `proxy:"skip-cert-verify,omitempty"`
-	ServerName     string            `proxy:"servername,omitempty"`
+	Name           string       `proxy:"name"`
+	Server         string       `proxy:"server"`
+	Port           int          `proxy:"port"`
+	UUID           string       `proxy:"uuid"`
+	AlterID        int          `proxy:"alterId"`
+	Cipher         string       `proxy:"cipher"`
+	UDP            bool         `proxy:"udp,omitempty"`
+	Network        string       `proxy:"network,omitempty"`
+	TLS            bool         `proxy:"tls,omitempty"`
+	SkipCertVerify bool         `proxy:"skip-cert-verify,omitempty"`
+	ServerName     string       `proxy:"servername,omitempty"`
+	HTTPOpts       HTTPOptions  `proxy:"http-opts,omitempty"`
+	HTTP2Opts      HTTP2Options `proxy:"h2-opts,omitempty"`
+	GrpcOpts       GrpcOptions  `proxy:"grpc-opts,omitempty"`
+	WSOpts         WSOptions    `proxy:"ws-opts,omitempty"`
+
+	// TODO: remove these until 2022
+	WSHeaders map[string]string `proxy:"ws-headers,omitempty"`
+	WSPath    string            `proxy:"ws-path,omitempty"`
 }
 
 type HTTPOptions struct {
@@ -103,8 +105,16 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 
 		if v.option.TLS {
 			wsOpts.TLS = true
-			wsOpts.SkipCertVerify = v.option.SkipCertVerify
-			wsOpts.ServerName = v.option.ServerName
+			wsOpts.TLSConfig = &tls.Config{
+				ServerName:         host,
+				InsecureSkipVerify: v.option.SkipCertVerify,
+				NextProtos:         []string{"http/1.1"},
+			}
+			if v.option.ServerName != "" {
+				wsOpts.TLSConfig.ServerName = v.option.ServerName
+			} else if host := wsOpts.Headers.Get("Host"); host != "" {
+				wsOpts.TLSConfig.ServerName = host
+			}
 		}
 		c, err = vmess.StreamWebsocketConn(c, wsOpts)
 	case "http":
@@ -213,8 +223,8 @@ func (v *Vmess) DialContext(ctx context.Context, metadata *C.Metadata) (_ C.Conn
 	return NewConn(c, v), err
 }
 
-// DialUDP implements C.ProxyAdapter
-func (v *Vmess) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
+// ListenPacketContext implements C.ProxyAdapter
+func (v *Vmess) ListenPacketContext(ctx context.Context, 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)
@@ -235,8 +245,6 @@ func (v *Vmess) DialUDP(metadata *C.Metadata) (_ C.PacketConn, err error) {
 
 		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())
diff --git a/adapter/outboundgroup/fallback.go b/adapter/outboundgroup/fallback.go
index da01d4de..3221b552 100644
--- a/adapter/outboundgroup/fallback.go
+++ b/adapter/outboundgroup/fallback.go
@@ -32,10 +32,10 @@ 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) {
+// ListenPacketContext implements C.ProxyAdapter
+func (f *Fallback) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
 	proxy := f.findAliveProxy(true)
-	pc, err := proxy.DialUDP(metadata)
+	pc, err := proxy.ListenPacketContext(ctx, metadata)
 	if err == nil {
 		pc.AppendToChains(f)
 	}
diff --git a/adapter/outboundgroup/loadbalance.go b/adapter/outboundgroup/loadbalance.go
index e529b53b..fb284010 100644
--- a/adapter/outboundgroup/loadbalance.go
+++ b/adapter/outboundgroup/loadbalance.go
@@ -82,8 +82,8 @@ func (lb *LoadBalance) DialContext(ctx context.Context, metadata *C.Metadata) (c
 	return
 }
 
-// DialUDP implements C.ProxyAdapter
-func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error) {
+// ListenPacketContext implements C.ProxyAdapter
+func (lb *LoadBalance) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (pc C.PacketConn, err error) {
 	defer func() {
 		if err == nil {
 			pc.AppendToChains(lb)
@@ -91,8 +91,7 @@ func (lb *LoadBalance) DialUDP(metadata *C.Metadata) (pc C.PacketConn, err error
 	}()
 
 	proxy := lb.Unwrap(metadata)
-
-	return proxy.DialUDP(metadata)
+	return proxy.ListenPacketContext(ctx, metadata)
 }
 
 // SupportUDP implements C.ProxyAdapter
diff --git a/adapter/outboundgroup/selector.go b/adapter/outboundgroup/selector.go
index 12453927..008e8af8 100644
--- a/adapter/outboundgroup/selector.go
+++ b/adapter/outboundgroup/selector.go
@@ -28,9 +28,9 @@ func (s *Selector) DialContext(ctx context.Context, metadata *C.Metadata) (C.Con
 	return c, err
 }
 
-// DialUDP implements C.ProxyAdapter
-func (s *Selector) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := s.selectedProxy(true).DialUDP(metadata)
+// ListenPacketContext implements C.ProxyAdapter
+func (s *Selector) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := s.selectedProxy(true).ListenPacketContext(ctx, metadata)
 	if err == nil {
 		pc.AppendToChains(s)
 	}
diff --git a/adapter/outboundgroup/urltest.go b/adapter/outboundgroup/urltest.go
index 2a11cd23..b27f12a4 100644
--- a/adapter/outboundgroup/urltest.go
+++ b/adapter/outboundgroup/urltest.go
@@ -42,9 +42,9 @@ func (u *URLTest) DialContext(ctx context.Context, metadata *C.Metadata) (c C.Co
 	return c, err
 }
 
-// DialUDP implements C.ProxyAdapter
-func (u *URLTest) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
-	pc, err := u.fast(true).DialUDP(metadata)
+// ListenPacketContext implements C.ProxyAdapter
+func (u *URLTest) ListenPacketContext(ctx context.Context, metadata *C.Metadata) (C.PacketConn, error) {
+	pc, err := u.fast(true).ListenPacketContext(ctx, metadata)
 	if err == nil {
 		pc.AppendToChains(u)
 	}
diff --git a/adapter/provider/fetcher.go b/adapter/provider/fetcher.go
index 777e3aa5..6c1e96b4 100644
--- a/adapter/provider/fetcher.go
+++ b/adapter/provider/fetcher.go
@@ -3,7 +3,6 @@ package provider
 import (
 	"bytes"
 	"crypto/md5"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -13,8 +12,8 @@ import (
 )
 
 var (
-	fileMode os.FileMode = 0666
-	dirMode  os.FileMode = 0755
+	fileMode os.FileMode = 0o666
+	dirMode  os.FileMode = 0o755
 )
 
 type parser = func([]byte) (interface{}, error)
@@ -45,7 +44,7 @@ func (f *fetcher) Initial() (interface{}, error) {
 		isLocal bool
 	)
 	if stat, fErr := os.Stat(f.vehicle.Path()); fErr == nil {
-		buf, err = ioutil.ReadFile(f.vehicle.Path())
+		buf, err = os.ReadFile(f.vehicle.Path())
 		modTime := stat.ModTime()
 		f.updatedAt = &modTime
 		isLocal = true
@@ -165,7 +164,7 @@ func safeWrite(path string, buf []byte) error {
 		}
 	}
 
-	return ioutil.WriteFile(path, buf, fileMode)
+	return os.WriteFile(path, buf, fileMode)
 }
 
 func newFetcher(name string, interval time.Duration, vehicle types.Vehicle, parser parser, onUpdate func(interface{})) *fetcher {
diff --git a/adapter/provider/parser.go b/adapter/provider/parser.go
index f326d4cc..8a173966 100644
--- a/adapter/provider/parser.go
+++ b/adapter/provider/parser.go
@@ -10,9 +10,7 @@ import (
 	types "github.com/Dreamacro/clash/constant/provider"
 )
 
-var (
-	errVehicleType = errors.New("unsupport vehicle type")
-)
+var errVehicleType = errors.New("unsupport vehicle type")
 
 type healthCheckSchema struct {
 	Enable   bool   `provider:"enable"`
diff --git a/adapter/provider/vehicle.go b/adapter/provider/vehicle.go
index f556e69c..4f08c317 100644
--- a/adapter/provider/vehicle.go
+++ b/adapter/provider/vehicle.go
@@ -2,10 +2,11 @@ package provider
 
 import (
 	"context"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"time"
 
 	"github.com/Dreamacro/clash/component/dialer"
@@ -25,7 +26,7 @@ func (f *FileVehicle) Path() string {
 }
 
 func (f *FileVehicle) Read() ([]byte, error) {
-	return ioutil.ReadFile(f.path)
+	return os.ReadFile(f.path)
 }
 
 func NewFileVehicle(path string) *FileVehicle {
@@ -84,7 +85,7 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 	}
 	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
diff --git a/common/cache/lrucache_test.go b/common/cache/lrucache_test.go
index 13675bff..8a04f746 100644
--- a/common/cache/lrucache_test.go
+++ b/common/cache/lrucache_test.go
@@ -149,7 +149,6 @@ func TestSetWithExpire(t *testing.T) {
 	assert.Equal(t, nil, res)
 	assert.Equal(t, time.Time{}, expires)
 	assert.Equal(t, false, exist)
-
 }
 
 func TestStale(t *testing.T) {
diff --git a/common/murmur3/murmur32.go b/common/murmur3/murmur32.go
index 9861eecd..e52b7937 100644
--- a/common/murmur3/murmur32.go
+++ b/common/murmur3/murmur32.go
@@ -67,7 +67,6 @@ func (d *digest32) bmix(p []byte) (tail []byte) {
 }
 
 func (d *digest32) Sum32() (h1 uint32) {
-
 	h1 = d.h1
 
 	var k1 uint32
diff --git a/common/net/bufconn.go b/common/net/bufconn.go
index cb7433d2..a50c7f03 100644
--- a/common/net/bufconn.go
+++ b/common/net/bufconn.go
@@ -11,6 +11,9 @@ type BufferedConn struct {
 }
 
 func NewBufferedConn(c net.Conn) *BufferedConn {
+	if bc, ok := c.(*BufferedConn); ok {
+		return bc
+	}
 	return &BufferedConn{bufio.NewReader(c), c}
 }
 
diff --git a/common/observable/observable_test.go b/common/observable/observable_test.go
index cb16ad39..b70feec8 100644
--- a/common/observable/observable_test.go
+++ b/common/observable/observable_test.go
@@ -38,7 +38,7 @@ func TestObservable_MultiSubscribe(t *testing.T) {
 	src := NewObservable(iter)
 	ch1, _ := src.Subscribe()
 	ch2, _ := src.Subscribe()
-	var count = atomic.NewInt32(0)
+	count := atomic.NewInt32(0)
 
 	var wg sync.WaitGroup
 	wg.Add(2)
diff --git a/common/pool/alloc.go b/common/pool/alloc.go
index 6ae53c1d..710639af 100644
--- a/common/pool/alloc.go
+++ b/common/pool/alloc.go
@@ -53,6 +53,7 @@ func (alloc *Allocator) Put(buf []byte) error {
 	}
 
 	//lint:ignore SA6002 ignore temporarily
+	//nolint
 	alloc.buffers[bits].Put(buf)
 	return nil
 }
diff --git a/common/singledo/singledo_test.go b/common/singledo/singledo_test.go
index 2b0d5988..c85795c2 100644
--- a/common/singledo/singledo_test.go
+++ b/common/singledo/singledo_test.go
@@ -12,7 +12,7 @@ import (
 func TestBasic(t *testing.T) {
 	single := NewSingle(time.Millisecond * 30)
 	foo := 0
-	var shardCount = atomic.NewInt32(0)
+	shardCount := atomic.NewInt32(0)
 	call := func() (interface{}, error) {
 		foo++
 		time.Sleep(time.Millisecond * 5)
diff --git a/common/structure/structure_test.go b/common/structure/structure_test.go
index 6e3e6290..0feef28e 100644
--- a/common/structure/structure_test.go
+++ b/common/structure/structure_test.go
@@ -5,8 +5,10 @@ import (
 	"testing"
 )
 
-var decoder = NewDecoder(Option{TagName: "test"})
-var weakTypeDecoder = NewDecoder(Option{TagName: "test", WeaklyTypedInput: true})
+var (
+	decoder         = NewDecoder(Option{TagName: "test"})
+	weakTypeDecoder = NewDecoder(Option{TagName: "test", WeaklyTypedInput: true})
+)
 
 type Baz struct {
 	Foo int    `test:"foo"`
diff --git a/component/dhcp/dhcp.go b/component/dhcp/dhcp.go
index b2ca6928..b7e9f506 100644
--- a/component/dhcp/dhcp.go
+++ b/component/dhcp/dhcp.go
@@ -3,9 +3,10 @@ package dhcp
 import (
 	"context"
 	"errors"
-	"math/rand"
 	"net"
 
+	"github.com/Dreamacro/clash/component/iface"
+
 	"github.com/insomniacslk/dhcp/dhcpv4"
 )
 
@@ -23,7 +24,12 @@ func ResolveDNSFromDHCP(context context.Context, ifaceName string) ([]net.IP, er
 
 	result := make(chan []net.IP, 1)
 
-	discovery, err := dhcpv4.NewDiscovery(randomHardware(), dhcpv4.WithBroadcast(true), dhcpv4.WithRequestedOptions(dhcpv4.OptionDomainNameServer))
+	ifaceObj, err := iface.ResolveInterface(ifaceName)
+	if err != nil {
+		return nil, err
+	}
+
+	discovery, err := dhcpv4.NewDiscovery(ifaceObj.HardwareAddr, dhcpv4.WithBroadcast(true), dhcpv4.WithRequestedOptions(dhcpv4.OptionDomainNameServer))
 	if err != nil {
 		return nil, err
 	}
@@ -80,15 +86,3 @@ func receiveOffer(conn net.PacketConn, id dhcpv4.TransactionID, result chan<- []
 		return
 	}
 }
-
-func randomHardware() net.HardwareAddr {
-	addr := make(net.HardwareAddr, 6)
-
-	addr[0] = 0xff
-
-	for i := 1; i < len(addr); i++ {
-		addr[i] = byte(rand.Intn(254) + 1)
-	}
-
-	return addr
-}
diff --git a/component/dialer/options.go b/component/dialer/options.go
index 4b5d64c0..33083864 100644
--- a/component/dialer/options.go
+++ b/component/dialer/options.go
@@ -1,8 +1,6 @@
 package dialer
 
-var (
-	DefaultOptions []Option
-)
+var DefaultOptions []Option
 
 type config struct {
 	skipDefault   bool
diff --git a/component/fakeip/cachefile.go b/component/fakeip/cachefile.go
new file mode 100644
index 00000000..7ee88981
--- /dev/null
+++ b/component/fakeip/cachefile.go
@@ -0,0 +1,49 @@
+package fakeip
+
+import (
+	"net"
+
+	"github.com/Dreamacro/clash/component/profile/cachefile"
+)
+
+type cachefileStore struct {
+	cache *cachefile.CacheFile
+}
+
+// GetByHost implements store.GetByHost
+func (c *cachefileStore) GetByHost(host string) (net.IP, bool) {
+	elm := c.cache.GetFakeip([]byte(host))
+	if elm == nil {
+		return nil, false
+	}
+	return net.IP(elm), true
+}
+
+// PutByHost implements store.PutByHost
+func (c *cachefileStore) PutByHost(host string, ip net.IP) {
+	c.cache.PutFakeip([]byte(host), ip)
+}
+
+// GetByIP implements store.GetByIP
+func (c *cachefileStore) GetByIP(ip net.IP) (string, bool) {
+	elm := c.cache.GetFakeip(ip.To4())
+	if elm == nil {
+		return "", false
+	}
+	return string(elm), true
+}
+
+// PutByIP implements store.PutByIP
+func (c *cachefileStore) PutByIP(ip net.IP, host string) {
+	c.cache.PutFakeip(ip.To4(), []byte(host))
+}
+
+// Exist implements store.Exist
+func (c *cachefileStore) Exist(ip net.IP) bool {
+	_, exist := c.GetByIP(ip)
+	return exist
+}
+
+// CloneTo implements store.CloneTo
+// already persistence
+func (c *cachefileStore) CloneTo(store store) {}
diff --git a/component/fakeip/memory.go b/component/fakeip/memory.go
new file mode 100644
index 00000000..75d4a3b2
--- /dev/null
+++ b/component/fakeip/memory.go
@@ -0,0 +1,60 @@
+package fakeip
+
+import (
+	"net"
+
+	"github.com/Dreamacro/clash/common/cache"
+)
+
+type memoryStore struct {
+	cache *cache.LruCache
+}
+
+// GetByHost implements store.GetByHost
+func (m *memoryStore) GetByHost(host string) (net.IP, bool) {
+	if elm, exist := m.cache.Get(host); exist {
+		ip := elm.(net.IP)
+
+		// ensure ip --> host on head of linked list
+		m.cache.Get(ipToUint(ip.To4()))
+		return ip, true
+	}
+
+	return nil, false
+}
+
+// PutByHost implements store.PutByHost
+func (m *memoryStore) PutByHost(host string, ip net.IP) {
+	m.cache.Set(host, ip)
+}
+
+// GetByIP implements store.GetByIP
+func (m *memoryStore) GetByIP(ip net.IP) (string, bool) {
+	if elm, exist := m.cache.Get(ipToUint(ip.To4())); exist {
+		host := elm.(string)
+
+		// ensure host --> ip on head of linked list
+		m.cache.Get(host)
+		return host, true
+	}
+
+	return "", false
+}
+
+// PutByIP implements store.PutByIP
+func (m *memoryStore) PutByIP(ip net.IP, host string) {
+	m.cache.Set(ipToUint(ip.To4()), host)
+}
+
+// Exist implements store.Exist
+func (m *memoryStore) Exist(ip net.IP) bool {
+	return m.cache.Exist(ipToUint(ip.To4()))
+}
+
+// CloneTo implements store.CloneTo
+// only for memoryStore to memoryStore
+func (m *memoryStore) CloneTo(store store) {
+	if ms, ok := store.(*memoryStore); ok {
+		m.cache.CloneTo(ms.cache)
+	}
+}
diff --git a/component/fakeip/pool.go b/component/fakeip/pool.go
index 97d812ac..180d5eb1 100644
--- a/component/fakeip/pool.go
+++ b/component/fakeip/pool.go
@@ -6,9 +6,19 @@ import (
 	"sync"
 
 	"github.com/Dreamacro/clash/common/cache"
+	"github.com/Dreamacro/clash/component/profile/cachefile"
 	"github.com/Dreamacro/clash/component/trie"
 )
 
+type store interface {
+	GetByHost(host string) (net.IP, bool)
+	PutByHost(host string, ip net.IP)
+	GetByIP(ip net.IP) (string, bool)
+	PutByIP(ip net.IP, host string)
+	Exist(ip net.IP) bool
+	CloneTo(store)
+}
+
 // Pool is a implementation about fake ip generator without storage
 type Pool struct {
 	max     uint32
@@ -18,25 +28,19 @@ type Pool struct {
 	mux     sync.Mutex
 	host    *trie.DomainTrie
 	ipnet   *net.IPNet
-	cache   *cache.LruCache
+	store   store
 }
 
 // Lookup return a fake ip with host
 func (p *Pool) Lookup(host string) net.IP {
 	p.mux.Lock()
 	defer p.mux.Unlock()
-	if elm, exist := p.cache.Get(host); exist {
-		ip := elm.(net.IP)
-
-		// ensure ip --> host on head of linked list
-		n := ipToUint(ip.To4())
-		offset := n - p.min + 1
-		p.cache.Get(offset)
+	if ip, exist := p.store.GetByHost(host); exist {
 		return ip
 	}
 
 	ip := p.get(host)
-	p.cache.Set(host, ip)
+	p.store.PutByHost(host, ip)
 	return ip
 }
 
@@ -49,22 +53,11 @@ func (p *Pool) LookBack(ip net.IP) (string, bool) {
 		return "", false
 	}
 
-	n := ipToUint(ip.To4())
-	offset := n - p.min + 1
-
-	if elm, exist := p.cache.Get(offset); exist {
-		host := elm.(string)
-
-		// ensure host --> ip on head of linked list
-		p.cache.Get(host)
-		return host, true
-	}
-
-	return "", false
+	return p.store.GetByIP(ip)
 }
 
-// LookupHost return if domain in host
-func (p *Pool) LookupHost(domain string) bool {
+// ShouldSkipped return if domain should be skipped
+func (p *Pool) ShouldSkipped(domain string) bool {
 	if p.host == nil {
 		return false
 	}
@@ -80,9 +73,7 @@ func (p *Pool) Exist(ip net.IP) bool {
 		return false
 	}
 
-	n := ipToUint(ip.To4())
-	offset := n - p.min + 1
-	return p.cache.Exist(offset)
+	return p.store.Exist(ip)
 }
 
 // Gateway return gateway ip
@@ -95,9 +86,9 @@ 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)
+// CloneFrom clone cache from old pool
+func (p *Pool) CloneFrom(o *Pool) {
+	o.store.CloneTo(p.store)
 }
 
 func (p *Pool) get(host string) net.IP {
@@ -109,12 +100,13 @@ func (p *Pool) get(host string) net.IP {
 			break
 		}
 
-		if !p.cache.Exist(p.offset) {
+		ip := uintToIP(p.min + p.offset - 1)
+		if !p.store.Exist(ip) {
 			break
 		}
 	}
 	ip := uintToIP(p.min + p.offset - 1)
-	p.cache.Set(p.offset, host)
+	p.store.PutByIP(ip, host)
 	return ip
 }
 
@@ -130,11 +122,24 @@ func uintToIP(v uint32) net.IP {
 	return net.IP{byte(v >> 24), byte(v >> 16), byte(v >> 8), byte(v)}
 }
 
-// New return Pool instance
-func New(ipnet *net.IPNet, size int, host *trie.DomainTrie) (*Pool, error) {
-	min := ipToUint(ipnet.IP) + 2
+type Options struct {
+	IPNet *net.IPNet
+	Host  *trie.DomainTrie
 
-	ones, bits := ipnet.Mask.Size()
+	// Size sets the maximum number of entries in memory
+	// and does not work if Persistence is true
+	Size int
+
+	// Persistence will save the data to disk.
+	// Size will not work and record will be fully stored.
+	Persistence bool
+}
+
+// New return Pool instance
+func New(options Options) (*Pool, error) {
+	min := ipToUint(options.IPNet.IP) + 2
+
+	ones, bits := options.IPNet.Mask.Size()
 	total := 1<<uint(bits-ones) - 2
 
 	if total <= 0 {
@@ -142,12 +147,22 @@ func New(ipnet *net.IPNet, size int, host *trie.DomainTrie) (*Pool, error) {
 	}
 
 	max := min + uint32(total) - 1
-	return &Pool{
+	pool := &Pool{
 		min:     min,
 		max:     max,
 		gateway: min - 1,
-		host:    host,
-		ipnet:   ipnet,
-		cache:   cache.NewLRUCache(cache.WithSize(size * 2)),
-	}, nil
+		host:    options.Host,
+		ipnet:   options.IPNet,
+	}
+	if options.Persistence {
+		pool.store = &cachefileStore{
+			cache: cachefile.Cache(),
+		}
+	} else {
+		pool.store = &memoryStore{
+			cache: cache.NewLRUCache(cache.WithSize(options.Size * 2)),
+		}
+	}
+
+	return pool, nil
 }
diff --git a/component/fakeip/pool_test.go b/component/fakeip/pool_test.go
index 89b161b8..bd4af4c9 100644
--- a/component/fakeip/pool_test.go
+++ b/component/fakeip/pool_test.go
@@ -2,38 +2,118 @@ package fakeip
 
 import (
 	"net"
+	"os"
 	"testing"
+	"time"
+
+	"github.com/Dreamacro/clash/component/profile/cachefile"
+	"github.com/Dreamacro/clash/component/trie"
 
 	"github.com/stretchr/testify/assert"
+	"go.etcd.io/bbolt"
 )
 
+func createPools(options Options) ([]*Pool, string, error) {
+	pool, err := New(options)
+	if err != nil {
+		return nil, "", err
+	}
+	filePool, tempfile, err := createCachefileStore(options)
+	if err != nil {
+		return nil, "", err
+	}
+
+	return []*Pool{pool, filePool}, tempfile, nil
+}
+
+func createCachefileStore(options Options) (*Pool, string, error) {
+	pool, err := New(options)
+	if err != nil {
+		return nil, "", err
+	}
+	f, err := os.CreateTemp("", "clash")
+	if err != nil {
+		return nil, "", err
+	}
+
+	db, err := bbolt.Open(f.Name(), 0o666, &bbolt.Options{Timeout: time.Second})
+	if err != nil {
+		return nil, "", err
+	}
+
+	pool.store = &cachefileStore{
+		cache: &cachefile.CacheFile{DB: db},
+	}
+	return pool, f.Name(), nil
+}
+
 func TestPool_Basic(t *testing.T) {
 	_, ipnet, _ := net.ParseCIDR("192.168.0.1/29")
-	pool, _ := New(ipnet, 10, nil)
+	pools, tempfile, err := createPools(Options{
+		IPNet: ipnet,
+		Size:  10,
+	})
+	assert.Nil(t, err)
+	defer os.Remove(tempfile)
 
-	first := pool.Lookup("foo.com")
-	last := pool.Lookup("bar.com")
-	bar, exist := pool.LookBack(last)
+	for _, pool := range pools {
+		first := pool.Lookup("foo.com")
+		last := pool.Lookup("bar.com")
+		bar, exist := pool.LookBack(last)
 
-	assert.True(t, first.Equal(net.IP{192, 168, 0, 2}))
-	assert.True(t, last.Equal(net.IP{192, 168, 0, 3}))
-	assert.True(t, exist)
-	assert.Equal(t, bar, "bar.com")
+		assert.True(t, first.Equal(net.IP{192, 168, 0, 2}))
+		assert.Equal(t, pool.Lookup("foo.com"), net.IP{192, 168, 0, 2})
+		assert.True(t, last.Equal(net.IP{192, 168, 0, 3}))
+		assert.True(t, exist)
+		assert.Equal(t, bar, "bar.com")
+		assert.Equal(t, pool.Gateway(), net.IP{192, 168, 0, 1})
+		assert.Equal(t, pool.IPNet().String(), ipnet.String())
+		assert.True(t, pool.Exist(net.IP{192, 168, 0, 3}))
+		assert.False(t, pool.Exist(net.IP{192, 168, 0, 4}))
+		assert.False(t, pool.Exist(net.ParseIP("::1")))
+	}
 }
 
-func TestPool_Cycle(t *testing.T) {
+func TestPool_CycleUsed(t *testing.T) {
 	_, ipnet, _ := net.ParseCIDR("192.168.0.1/30")
-	pool, _ := New(ipnet, 10, nil)
+	pools, tempfile, err := createPools(Options{
+		IPNet: ipnet,
+		Size:  10,
+	})
+	assert.Nil(t, err)
+	defer os.Remove(tempfile)
 
-	first := pool.Lookup("foo.com")
-	same := pool.Lookup("baz.com")
+	for _, pool := range pools {
+		first := pool.Lookup("foo.com")
+		same := pool.Lookup("baz.com")
+		assert.True(t, first.Equal(same))
+	}
+}
 
-	assert.True(t, first.Equal(same))
+func TestPool_Skip(t *testing.T) {
+	_, ipnet, _ := net.ParseCIDR("192.168.0.1/30")
+	tree := trie.New()
+	tree.Insert("example.com", tree)
+	pools, tempfile, err := createPools(Options{
+		IPNet: ipnet,
+		Size:  10,
+		Host:  tree,
+	})
+	assert.Nil(t, err)
+	defer os.Remove(tempfile)
+
+	for _, pool := range pools {
+		assert.True(t, pool.ShouldSkipped("example.com"))
+		assert.False(t, pool.ShouldSkipped("foo.com"))
+	}
 }
 
 func TestPool_MaxCacheSize(t *testing.T) {
 	_, ipnet, _ := net.ParseCIDR("192.168.0.1/24")
-	pool, _ := New(ipnet, 2, nil)
+	pool, _ := New(Options{
+		IPNet: ipnet,
+		Size:  2,
+	})
 
 	first := pool.Lookup("foo.com")
 	pool.Lookup("bar.com")
@@ -45,7 +125,10 @@ func TestPool_MaxCacheSize(t *testing.T) {
 
 func TestPool_DoubleMapping(t *testing.T) {
 	_, ipnet, _ := net.ParseCIDR("192.168.0.1/24")
-	pool, _ := New(ipnet, 2, nil)
+	pool, _ := New(Options{
+		IPNet: ipnet,
+		Size:  2,
+	})
 
 	// fill cache
 	fooIP := pool.Lookup("foo.com")
@@ -70,9 +153,35 @@ func TestPool_DoubleMapping(t *testing.T) {
 	assert.False(t, bazIP.Equal(newBazIP))
 }
 
+func TestPool_Clone(t *testing.T) {
+	_, ipnet, _ := net.ParseCIDR("192.168.0.1/24")
+	pool, _ := New(Options{
+		IPNet: ipnet,
+		Size:  2,
+	})
+
+	first := pool.Lookup("foo.com")
+	last := pool.Lookup("bar.com")
+	assert.True(t, first.Equal(net.IP{192, 168, 0, 2}))
+	assert.True(t, last.Equal(net.IP{192, 168, 0, 3}))
+
+	newPool, _ := New(Options{
+		IPNet: ipnet,
+		Size:  2,
+	})
+	newPool.CloneFrom(pool)
+	_, firstExist := newPool.LookBack(first)
+	_, lastExist := newPool.LookBack(last)
+	assert.True(t, firstExist)
+	assert.True(t, lastExist)
+}
+
 func TestPool_Error(t *testing.T) {
 	_, ipnet, _ := net.ParseCIDR("192.168.0.1/31")
-	_, err := New(ipnet, 10, nil)
+	_, err := New(Options{
+		IPNet: ipnet,
+		Size:  10,
+	})
 
 	assert.Error(t, err)
 }
diff --git a/component/iface/iface.go b/component/iface/iface.go
index 30c6a6bc..4e916260 100644
--- a/component/iface/iface.go
+++ b/component/iface/iface.go
@@ -15,8 +15,10 @@ type Interface struct {
 	HardwareAddr net.HardwareAddr
 }
 
-var ErrIfaceNotFound = errors.New("interface not found")
-var ErrAddrNotFound = errors.New("addr not found")
+var (
+	ErrIfaceNotFound = errors.New("interface not found")
+	ErrAddrNotFound  = errors.New("addr not found")
+)
 
 var interfaces = singledo.NewSingle(time.Second * 20)
 
diff --git a/component/process/process_linux.go b/component/process/process_linux.go
index fabe969c..be758a69 100644
--- a/component/process/process_linux.go
+++ b/component/process/process_linux.go
@@ -5,8 +5,8 @@ import (
 	"encoding/binary"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
+	"os"
 	"path"
 	"path/filepath"
 	"syscall"
@@ -25,8 +25,10 @@ var nativeEndian = func() binary.ByteOrder {
 	return binary.LittleEndian
 }()
 
-type SocketResolver func(network string, ip net.IP, srcPort int) (inode, uid int, err error)
-type ProcessNameResolver func(inode, uid int) (name string, err error)
+type (
+	SocketResolver      func(network string, ip net.IP, srcPort int) (inode, uid int, err error)
+	ProcessNameResolver func(inode, uid int) (name string, err error)
+)
 
 // export for android
 var (
@@ -167,7 +169,7 @@ func unpackSocketDiagResponse(msg *syscall.NetlinkMessage) (inode, uid uint32) {
 }
 
 func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
-	files, err := ioutil.ReadDir(pathProc)
+	files, err := os.ReadDir(pathProc)
 	if err != nil {
 		return "", err
 	}
@@ -180,14 +182,18 @@ func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
 			continue
 		}
 
-		if f.Sys().(*syscall.Stat_t).Uid != uint32(uid) {
+		info, err := f.Info()
+		if err != nil {
+			return "", err
+		}
+		if info.Sys().(*syscall.Stat_t).Uid != uint32(uid) {
 			continue
 		}
 
 		processPath := path.Join(pathProc, f.Name())
 		fdPath := path.Join(processPath, "fd")
 
-		fds, err := ioutil.ReadDir(fdPath)
+		fds, err := os.ReadDir(fdPath)
 		if err != nil {
 			continue
 		}
@@ -199,7 +205,7 @@ func resolveProcessNameByProcSearch(inode, uid int) (string, error) {
 			}
 
 			if bytes.Equal(buffer[:n], socket) {
-				cmdline, err := ioutil.ReadFile(path.Join(processPath, "cmdline"))
+				cmdline, err := os.ReadFile(path.Join(processPath, "cmdline"))
 				if err != nil {
 					return "", err
 				}
diff --git a/component/profile/cachefile/cache.go b/component/profile/cachefile/cache.go
index b23eeb97..1ef47493 100644
--- a/component/profile/cachefile/cache.go
+++ b/component/profile/cachefile/cache.go
@@ -3,52 +3,47 @@ package cachefile
 import (
 	"bytes"
 	"encoding/gob"
-	"io/ioutil"
 	"os"
 	"sync"
+	"time"
 
 	"github.com/Dreamacro/clash/component/profile"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/log"
+
+	"go.etcd.io/bbolt"
 )
 
 var (
 	initOnce     sync.Once
-	fileMode     os.FileMode = 0666
+	fileMode     os.FileMode = 0o666
 	defaultCache *CacheFile
-)
 
-type cache struct {
-	Selected map[string]string
-}
+	bucketSelected = []byte("selected")
+	bucketFakeip   = []byte("fakeip")
+)
 
 // CacheFile store and update the cache file
 type CacheFile struct {
-	path  string
-	model *cache
-	buf   *bytes.Buffer
-	mux   sync.Mutex
+	DB *bbolt.DB
 }
 
 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())
+	} else if c.DB == nil {
 		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())
+	err := c.DB.Batch(func(t *bbolt.Tx) error {
+		bucket, err := t.CreateBucketIfNotExists(bucketSelected)
+		if err != nil {
+			return err
+		}
+		return bucket.Put([]byte(group), []byte(selected))
+	})
+	if err != nil {
+		log.Warnln("[CacheFile] write cache to %s failed: %s", c.DB.Path(), err.Error())
 		return
 	}
 }
@@ -56,46 +51,131 @@ func (c *CacheFile) SetSelected(group, selected string) {
 func (c *CacheFile) SelectedMap() map[string]string {
 	if !profile.StoreSelected.Load() {
 		return nil
+	} else if c.DB == nil {
+		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
-	}
+	c.DB.View(func(t *bbolt.Tx) error {
+		bucket := t.Bucket(bucketSelected)
+		if bucket == nil {
+			return nil
+		}
+
+		c := bucket.Cursor()
+		for k, v := c.First(); k != nil; k, v = c.Next() {
+			mapping[string(k)] = string(v)
+		}
+		return nil
+	})
 	return mapping
 }
 
-func (c *CacheFile) element() *cache {
-	if c.model != nil {
-		return c.model
+func (c *CacheFile) PutFakeip(key, value []byte) error {
+	if c.DB == nil {
+		return nil
 	}
 
+	err := c.DB.Batch(func(t *bbolt.Tx) error {
+		bucket, err := t.CreateBucketIfNotExists(bucketFakeip)
+		if err != nil {
+			return err
+		}
+		return bucket.Put(key, value)
+	})
+	if err != nil {
+		log.Warnln("[CacheFile] write cache to %s failed: %s", c.DB.Path(), err.Error())
+	}
+
+	return err
+}
+
+func (c *CacheFile) GetFakeip(key []byte) []byte {
+	if c.DB == nil {
+		return nil
+	}
+
+	tx, err := c.DB.Begin(false)
+	if err != nil {
+		return nil
+	}
+	defer tx.Rollback()
+
+	bucket := tx.Bucket(bucketFakeip)
+	if bucket == nil {
+		return nil
+	}
+
+	return bucket.Get(key)
+}
+
+func (c *CacheFile) Close() error {
+	return c.DB.Close()
+}
+
+// TODO: remove migrateCache until 2022
+func migrateCache() {
+	defer func() {
+		options := bbolt.Options{Timeout: time.Second}
+		db, err := bbolt.Open(C.Path.Cache(), fileMode, &options)
+		switch err {
+		case bbolt.ErrInvalid, bbolt.ErrChecksum, bbolt.ErrVersionMismatch:
+			if err = os.Remove(C.Path.Cache()); err != nil {
+				log.Warnln("[CacheFile] remove invalid cache file error: %s", err.Error())
+				break
+			}
+			log.Infoln("[CacheFile] remove invalid cache file and create new one")
+			db, err = bbolt.Open(C.Path.Cache(), fileMode, &options)
+		}
+		if err != nil {
+			log.Warnln("[CacheFile] can't open cache file: %s", err.Error())
+		}
+
+		defaultCache = &CacheFile{
+			DB: db,
+		}
+	}()
+
+	buf, err := os.ReadFile(C.Path.OldCache())
+	if err != nil {
+		return
+	}
+	defer os.Remove(C.Path.OldCache())
+
+	// read old cache file
+	type cache struct {
+		Selected map[string]string
+	}
 	model := &cache{
 		Selected: map[string]string{},
 	}
+	bufReader := bytes.NewBuffer(buf)
+	gob.NewDecoder(bufReader).Decode(model)
 
-	if buf, err := ioutil.ReadFile(c.path); err == nil {
-		bufReader := bytes.NewBuffer(buf)
-		gob.NewDecoder(bufReader).Decode(model)
+	// write to new cache file
+	db, err := bbolt.Open(C.Path.Cache(), fileMode, nil)
+	if err != nil {
+		return
 	}
+	defer db.Close()
 
-	c.model = model
-	return c.model
+	db.Batch(func(t *bbolt.Tx) error {
+		bucket, err := t.CreateBucketIfNotExists(bucketSelected)
+		if err != nil {
+			return err
+		}
+		for group, selected := range model.Selected {
+			if err := bucket.Put([]byte(group), []byte(selected)); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
 }
 
 // Cache return singleton of CacheFile
 func Cache() *CacheFile {
-	initOnce.Do(func() {
-		defaultCache = &CacheFile{
-			path: C.Path.Cache(),
-			buf:  &bytes.Buffer{},
-		}
-	})
+	initOnce.Do(migrateCache)
 
 	return defaultCache
 }
diff --git a/component/profile/profile.go b/component/profile/profile.go
index ca9b1b88..e3d9e78c 100644
--- a/component/profile/profile.go
+++ b/component/profile/profile.go
@@ -4,7 +4,5 @@ import (
 	"go.uber.org/atomic"
 )
 
-var (
-	// StoreSelected is a global switch for storing selected proxy to cache
-	StoreSelected = atomic.NewBool(true)
-)
+// StoreSelected is a global switch for storing selected proxy to cache
+var StoreSelected = atomic.NewBool(true)
diff --git a/component/resolver/patch.go b/component/resolver/patch.go
index 55794695..be84e693 100644
--- a/component/resolver/patch.go
+++ b/component/resolver/patch.go
@@ -2,9 +2,7 @@ package resolver
 
 import D "github.com/miekg/dns"
 
-var (
-	DefaultLocalServer LocalServer
-)
+var DefaultLocalServer LocalServer
 
 type LocalServer interface {
 	ServeMsg(msg *D.Msg) (*D.Msg, error)
diff --git a/component/trie/domain.go b/component/trie/domain.go
index b4de4a70..ffd0b754 100644
--- a/component/trie/domain.go
+++ b/component/trie/domain.go
@@ -12,10 +12,8 @@ const (
 	domainStep      = "."
 )
 
-var (
-	// ErrInvalidDomain means insert domain is invalid
-	ErrInvalidDomain = errors.New("invalid domain")
-)
+// ErrInvalidDomain means insert domain is invalid
+var ErrInvalidDomain = errors.New("invalid domain")
 
 // DomainTrie contains the main logic for adding and searching nodes for domain segments.
 // support wildcard domain (e.g *.google.com)
diff --git a/config/config.go b/config/config.go
index 2b1bb291..08f21970 100644
--- a/config/config.go
+++ b/config/config.go
@@ -64,7 +64,7 @@ type DNS struct {
 	Fallback          []dns.NameServer `yaml:"fallback"`
 	FallbackFilter    FallbackFilter   `yaml:"fallback-filter"`
 	Listen            string           `yaml:"listen"`
-	EnhancedMode      dns.EnhancedMode `yaml:"enhanced-mode"`
+	EnhancedMode      C.DNSMode        `yaml:"enhanced-mode"`
 	DefaultNameserver []dns.NameServer `yaml:"default-nameserver"`
 	FakeIPRange       *fakeip.Pool
 	Hosts             *trie.DomainTrie
@@ -82,6 +82,7 @@ type FallbackFilter struct {
 // Profile config
 type Profile struct {
 	StoreSelected bool `yaml:"store-selected"`
+	StoreFakeIP   bool `yaml:"store-fakeip"`
 }
 
 // Tun config
@@ -117,7 +118,7 @@ type RawDNS struct {
 	Fallback          []string          `yaml:"fallback"`
 	FallbackFilter    RawFallbackFilter `yaml:"fallback-filter"`
 	Listen            string            `yaml:"listen"`
-	EnhancedMode      dns.EnhancedMode  `yaml:"enhanced-mode"`
+	EnhancedMode      C.DNSMode         `yaml:"enhanced-mode"`
 	FakeIPRange       string            `yaml:"fake-ip-range"`
 	FakeIPFilter      []string          `yaml:"fake-ip-filter"`
 	DefaultNameserver []string          `yaml:"default-nameserver"`
@@ -244,7 +245,7 @@ func ParseRawConfig(rawCfg *RawConfig) (*Config, error) {
 	}
 	config.Hosts = hosts
 
-	dnsCfg, err := parseDNS(rawCfg.DNS, hosts)
+	dnsCfg, err := parseDNS(rawCfg, hosts)
 	if err != nil {
 		return nil, err
 	}
@@ -434,7 +435,6 @@ func parseRules(cfg *RawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
 			return nil, fmt.Errorf("rules[%d] [%s] error: proxy [%s] not found", idx, line, target)
 		}
 
-		//rule = trimArr(rule)
 		params = trimArr(params)
 
 		parsed, parseErr := R.ParseRule(ruleName, payload, target, params)
@@ -569,7 +569,8 @@ func parseFallbackIPCIDR(ips []string) ([]*net.IPNet, error) {
 	return ipNets, nil
 }
 
-func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
+func parseDNS(rawCfg *RawConfig, hosts *trie.DomainTrie) (*DNS, error) {
+	cfg := rawCfg.DNS
 	if cfg.Enable && len(cfg.NameServer) == 0 {
 		return nil, fmt.Errorf("if DNS configuration is turned on, NameServer cannot be empty")
 	}
@@ -610,7 +611,7 @@ func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 		}
 	}
 
-	if cfg.EnhancedMode == dns.FAKEIP {
+	if cfg.EnhancedMode == C.DNSFakeIP {
 		_, ipnet, err := net.ParseCIDR(cfg.FakeIPRange)
 		if err != nil {
 			return nil, err
@@ -625,7 +626,12 @@ func parseDNS(cfg RawDNS, hosts *trie.DomainTrie) (*DNS, error) {
 			}
 		}
 
-		pool, err := fakeip.New(ipnet, 1000, host)
+		pool, err := fakeip.New(fakeip.Options{
+			IPNet:       ipnet,
+			Size:        1000,
+			Host:        host,
+			Persistence: rawCfg.Profile.StoreFakeIP,
+		})
 		if err != nil {
 			return nil, err
 		}
diff --git a/constant/adapters.go b/constant/adapters.go
index 1d1031d6..989fc608 100644
--- a/constant/adapters.go
+++ b/constant/adapters.go
@@ -30,6 +30,7 @@ const (
 
 const (
 	DefaultTCPTimeout = 5 * time.Second
+	DefaultUDPTimeout = DefaultTCPTimeout
 )
 
 type Connection interface {
@@ -74,11 +75,14 @@ type PacketConn interface {
 type ProxyAdapter interface {
 	Name() string
 	Type() AdapterType
+	Addr() string
+	SupportUDP() bool
+	MarshalJSON() ([]byte, error)
 
 	// StreamConn wraps a protocol around net.Conn with Metadata.
 	//
 	// Examples:
-	//	conn, _ := net.Dial("tcp", "host:port")
+	//	conn, _ := net.DialContext(context.Background(), "tcp", "host:port")
 	//	conn, _ = adapter.StreamConn(conn, metadata)
 	//
 	// It returns a C.Conn with protocol which start with
@@ -89,10 +93,8 @@ type ProxyAdapter interface {
 	// 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)
-	Addr() string
+	ListenPacketContext(ctx context.Context, metadata *Metadata) (PacketConn, error)
+
 	// Unwrap extracts the proxy from a proxy-group. It returns nil when nothing to extract.
 	Unwrap(metadata *Metadata) Proxy
 }
@@ -106,9 +108,14 @@ type Proxy interface {
 	ProxyAdapter
 	Alive() bool
 	DelayHistory() []DelayHistory
-	Dial(metadata *Metadata) (Conn, error)
 	LastDelay() uint16
 	URLTest(ctx context.Context, url string) (uint16, error)
+
+	// Deprecated: use DialContext instead.
+	Dial(metadata *Metadata) (Conn, error)
+
+	// Deprecated: use DialPacketConn instead.
+	DialUDP(metadata *Metadata) (PacketConn, error)
 }
 
 // AdapterType is enum of adapter type
diff --git a/constant/dns.go b/constant/dns.go
new file mode 100644
index 00000000..d1cd7a61
--- /dev/null
+++ b/constant/dns.go
@@ -0,0 +1,70 @@
+package constant
+
+import (
+	"encoding/json"
+	"errors"
+)
+
+// DNSModeMapping is a mapping for EnhancedMode enum
+var DNSModeMapping = map[string]DNSMode{
+	DNSNormal.String():  DNSNormal,
+	DNSFakeIP.String():  DNSFakeIP,
+	DNSMapping.String(): DNSMapping,
+}
+
+const (
+	DNSNormal DNSMode = iota
+	DNSFakeIP
+	DNSMapping
+)
+
+type DNSMode int
+
+// UnmarshalYAML unserialize EnhancedMode with yaml
+func (e *DNSMode) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var tp string
+	if err := unmarshal(&tp); err != nil {
+		return err
+	}
+	mode, exist := DNSModeMapping[tp]
+	if !exist {
+		return errors.New("invalid mode")
+	}
+	*e = mode
+	return nil
+}
+
+// MarshalYAML serialize EnhancedMode with yaml
+func (e DNSMode) MarshalYAML() (interface{}, error) {
+	return e.String(), nil
+}
+
+// UnmarshalJSON unserialize EnhancedMode with json
+func (e *DNSMode) UnmarshalJSON(data []byte) error {
+	var tp string
+	json.Unmarshal(data, &tp)
+	mode, exist := DNSModeMapping[tp]
+	if !exist {
+		return errors.New("invalid mode")
+	}
+	*e = mode
+	return nil
+}
+
+// MarshalJSON serialize EnhancedMode with json
+func (e DNSMode) MarshalJSON() ([]byte, error) {
+	return json.Marshal(e.String())
+}
+
+func (e DNSMode) String() string {
+	switch e {
+	case DNSNormal:
+		return "normal"
+	case DNSFakeIP:
+		return "fake-ip"
+	case DNSMapping:
+		return "redir-host"
+	default:
+		return "unknown"
+	}
+}
diff --git a/constant/metadata.go b/constant/metadata.go
index 296cfb43..77016b73 100644
--- a/constant/metadata.go
+++ b/constant/metadata.go
@@ -78,6 +78,7 @@ type Metadata struct {
 	AddrType int     `json:"-"`
 	Host     string  `json:"host"`
 	Process  string  `json:"process"`
+	DNSMode  DNSMode `json:"dnsMode"`
 }
 
 func (m *Metadata) RemoteAddress() string {
@@ -92,6 +93,23 @@ func (m *Metadata) Resolved() bool {
 	return m.DstIP != nil
 }
 
+// Pure is used to solve unexpected behavior
+// when dialing proxy connection in DNSMapping mode.
+func (m *Metadata) Pure() *Metadata {
+	if m.DNSMode == DNSMapping && m.DstIP != nil {
+		copy := *m
+		copy.Host = ""
+		if copy.DstIP.To4() != nil {
+			copy.AddrType = AtypIPv4
+		} else {
+			copy.AddrType = AtypIPv6
+		}
+		return &copy
+	}
+
+	return m
+}
+
 func (m *Metadata) UDPAddr() *net.UDPAddr {
 	if m.NetWork != UDP || m.DstIP == nil {
 		return nil
diff --git a/constant/path.go b/constant/path.go
index 348dcd34..4580b25c 100644
--- a/constant/path.go
+++ b/constant/path.go
@@ -55,10 +55,14 @@ func (p *path) MMDB() string {
 	return P.Join(p.homeDir, "Country.mmdb")
 }
 
-func (p *path) Cache() string {
+func (p *path) OldCache() string {
 	return P.Join(p.homeDir, ".cache")
 }
 
+func (p *path) Cache() string {
+	return P.Join(p.homeDir, "cache.db")
+}
+
 func (p *path) GeoIP() string {
 	return P.Join(p.homeDir, "geoip.dat")
 }
diff --git a/constant/provider/interface.go b/constant/provider/interface.go
index d3483cdc..53bda7ea 100644
--- a/constant/provider/interface.go
+++ b/constant/provider/interface.go
@@ -67,7 +67,7 @@ type ProxyProvider interface {
 	Provider
 	Proxies() []constant.Proxy
 	// ProxiesWithTouch is used to inform the provider that the proxy is actually being used while getting the list of proxies.
-	// Commonly used in Dial and DialUDP
+	// Commonly used in DialContext and DialPacketConn
 	ProxiesWithTouch() []constant.Proxy
 	HealthCheck()
 }
diff --git a/dns/client.go b/dns/client.go
index 6a54f9fa..5cb1fe02 100644
--- a/dns/client.go
+++ b/dns/client.go
@@ -15,9 +15,10 @@ import (
 
 type client struct {
 	*D.Client
-	r    *Resolver
-	port string
-	host string
+	r     *Resolver
+	port  string
+	host  string
+	iface string
 }
 
 func (c *client) Exchange(m *D.Msg) (*D.Msg, error) {
@@ -45,7 +46,11 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (*D.Msg, error)
 		network = "tcp"
 	}
 
-	conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), c.port))
+	options := []dialer.Option{}
+	if c.iface != "" {
+		options = append(options, dialer.WithInterface(c.iface))
+	}
+	conn, err := dialer.DialContext(ctx, network, net.JoinHostPort(ip.String(), c.port), options...)
 	if err != nil {
 		return nil, err
 	}
diff --git a/dns/dhcp.go b/dns/dhcp.go
index 94f8a36c..f964cec8 100644
--- a/dns/dhcp.go
+++ b/dns/dhcp.go
@@ -68,8 +68,11 @@ func (d *dhcpClient) resolve(ctx context.Context) (*Resolver, error) {
 			dns, err := dhcp.ResolveDNSFromDHCP(ctx, d.ifaceName)
 			if err == nil {
 				nameserver := make([]NameServer, 0, len(dns))
-				for _, d := range dns {
-					nameserver = append(nameserver, NameServer{Addr: net.JoinHostPort(d.String(), "53")})
+				for _, item := range dns {
+					nameserver = append(nameserver, NameServer{
+						Addr:      net.JoinHostPort(item.String(), "53"),
+						Interface: d.ifaceName,
+					})
 				}
 
 				res = NewResolver(Config{
diff --git a/dns/doh.go b/dns/doh.go
index 34375017..94312355 100644
--- a/dns/doh.go
+++ b/dns/doh.go
@@ -3,7 +3,7 @@ package dns
 import (
 	"bytes"
 	"context"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 
@@ -28,13 +28,21 @@ func (dc *dohClient) Exchange(m *D.Msg) (msg *D.Msg, err error) {
 }
 
 func (dc *dohClient) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
-	req, err := dc.newRequest(m)
+	// https://datatracker.ietf.org/doc/html/rfc8484#section-4.1
+	// In order to maximize cache friendliness, SHOULD use a DNS ID of 0 in every DNS request.
+	newM := *m
+	newM.Id = 0
+	req, err := dc.newRequest(&newM)
 	if err != nil {
 		return nil, err
 	}
 
 	req = req.WithContext(ctx)
-	return dc.doRequest(req)
+	msg, err = dc.doRequest(req)
+	if err == nil {
+		msg.Id = m.Id
+	}
+	return
 }
 
 // newRequest returns a new DoH request given a dns.Msg.
@@ -62,7 +70,7 @@ func (dc *dohClient) doRequest(req *http.Request) (msg *D.Msg, err error) {
 	}
 	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
diff --git a/dns/enhancer.go b/dns/enhancer.go
index 0b257005..76f0f262 100644
--- a/dns/enhancer.go
+++ b/dns/enhancer.go
@@ -5,20 +5,21 @@ import (
 
 	"github.com/Dreamacro/clash/common/cache"
 	"github.com/Dreamacro/clash/component/fakeip"
+	C "github.com/Dreamacro/clash/constant"
 )
 
 type ResolverEnhancer struct {
-	mode     EnhancedMode
+	mode     C.DNSMode
 	fakePool *fakeip.Pool
 	mapping  *cache.LruCache
 }
 
 func (h *ResolverEnhancer) FakeIPEnabled() bool {
-	return h.mode == FAKEIP
+	return h.mode == C.DNSFakeIP
 }
 
 func (h *ResolverEnhancer) MappingEnabled() bool {
-	return h.mode == FAKEIP || h.mode == MAPPING
+	return h.mode == C.DNSFakeIP || h.mode == C.DNSMapping
 }
 
 func (h *ResolverEnhancer) IsExistFakeIP(ip net.IP) bool {
@@ -67,7 +68,7 @@ func (h *ResolverEnhancer) PatchFrom(o *ResolverEnhancer) {
 	}
 
 	if h.fakePool != nil && o.fakePool != nil {
-		h.fakePool.PatchFrom(o.fakePool)
+		h.fakePool.CloneFrom(o.fakePool)
 	}
 }
 
@@ -75,7 +76,7 @@ func NewEnhancer(cfg Config) *ResolverEnhancer {
 	var fakePool *fakeip.Pool
 	var mapping *cache.LruCache
 
-	if cfg.EnhancedMode != NORMAL {
+	if cfg.EnhancedMode != C.DNSNormal {
 		fakePool = cfg.Pool
 		mapping = cache.NewLRUCache(cache.WithSize(4096), cache.WithStale(true))
 	}
diff --git a/dns/middleware.go b/dns/middleware.go
index 9931df2f..dc7cbe33 100644
--- a/dns/middleware.go
+++ b/dns/middleware.go
@@ -8,14 +8,17 @@ import (
 	"github.com/Dreamacro/clash/common/cache"
 	"github.com/Dreamacro/clash/component/fakeip"
 	"github.com/Dreamacro/clash/component/trie"
+	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/context"
 	"github.com/Dreamacro/clash/log"
 
 	D "github.com/miekg/dns"
 )
 
-type handler func(ctx *context.DNSContext, r *D.Msg) (*D.Msg, error)
-type middleware func(next handler) handler
+type (
+	handler    func(ctx *context.DNSContext, r *D.Msg) (*D.Msg, error)
+	middleware func(next handler) handler
+)
 
 func withHosts(hosts *trie.DomainTrie) middleware {
 	return func(next handler) handler {
@@ -105,7 +108,7 @@ func withFakeIP(fakePool *fakeip.Pool) middleware {
 			q := r.Question[0]
 
 			host := strings.TrimRight(q.Name, ".")
-			if fakePool.LookupHost(host) {
+			if fakePool.ShouldSkipped(host) {
 				return next(ctx, r)
 			}
 
@@ -176,11 +179,11 @@ func NewHandler(resolver *Resolver, mapper *ResolverEnhancer) handler {
 		middlewares = append(middlewares, withHosts(resolver.hosts))
 	}
 
-	if mapper.mode == FAKEIP {
+	if mapper.mode == C.DNSFakeIP {
 		middlewares = append(middlewares, withFakeIP(mapper.fakePool))
 	}
 
-	if mapper.mode != NORMAL {
+	if mapper.mode != C.DNSNormal {
 		middlewares = append(middlewares, withMapping(mapper.mapping))
 	}
 
diff --git a/dns/resolver.go b/dns/resolver.go
index 914f1418..91efbb8b 100644
--- a/dns/resolver.go
+++ b/dns/resolver.go
@@ -14,6 +14,7 @@ import (
 	"github.com/Dreamacro/clash/component/fakeip"
 	"github.com/Dreamacro/clash/component/resolver"
 	"github.com/Dreamacro/clash/component/trie"
+	C "github.com/Dreamacro/clash/constant"
 
 	D "github.com/miekg/dns"
 	"golang.org/x/sync/singleflight"
@@ -215,7 +216,6 @@ func (r *Resolver) shouldOnlyQueryFallback(m *D.Msg) bool {
 }
 
 func (r *Resolver) ipExchange(ctx context.Context, m *D.Msg) (msg *D.Msg, err error) {
-
 	if matched := r.matchPolicy(m); len(matched) != 0 {
 		res := <-r.asyncExchange(ctx, matched, m)
 		return res.Msg, res.Error
@@ -302,8 +302,9 @@ func (r *Resolver) asyncExchange(ctx context.Context, client []dnsClient, msg *D
 }
 
 type NameServer struct {
-	Net  string
-	Addr string
+	Net       string
+	Addr      string
+	Interface string
 }
 
 type FallbackFilter struct {
@@ -317,7 +318,7 @@ type Config struct {
 	Main, Fallback []NameServer
 	Default        []NameServer
 	IPv6           bool
-	EnhancedMode   EnhancedMode
+	EnhancedMode   C.DNSMode
 	FallbackFilter FallbackFilter
 	Pool           *fakeip.Pool
 	Hosts          *trie.DomainTrie
diff --git a/dns/util.go b/dns/util.go
index 0c3f42e5..d11870f8 100644
--- a/dns/util.go
+++ b/dns/util.go
@@ -2,8 +2,6 @@ package dns
 
 import (
 	"crypto/tls"
-	"encoding/json"
-	"errors"
 	"net"
 	"time"
 
@@ -13,72 +11,6 @@ import (
 	D "github.com/miekg/dns"
 )
 
-var (
-	// EnhancedModeMapping is a mapping for EnhancedMode enum
-	EnhancedModeMapping = map[string]EnhancedMode{
-		NORMAL.String():  NORMAL,
-		FAKEIP.String():  FAKEIP,
-		MAPPING.String(): MAPPING,
-	}
-)
-
-const (
-	NORMAL EnhancedMode = iota
-	FAKEIP
-	MAPPING
-)
-
-type EnhancedMode int
-
-// UnmarshalYAML unserialize EnhancedMode with yaml
-func (e *EnhancedMode) UnmarshalYAML(unmarshal func(interface{}) error) error {
-	var tp string
-	if err := unmarshal(&tp); err != nil {
-		return err
-	}
-	mode, exist := EnhancedModeMapping[tp]
-	if !exist {
-		return errors.New("invalid mode")
-	}
-	*e = mode
-	return nil
-}
-
-// MarshalYAML serialize EnhancedMode with yaml
-func (e EnhancedMode) MarshalYAML() (interface{}, error) {
-	return e.String(), nil
-}
-
-// UnmarshalJSON unserialize EnhancedMode with json
-func (e *EnhancedMode) UnmarshalJSON(data []byte) error {
-	var tp string
-	json.Unmarshal(data, &tp)
-	mode, exist := EnhancedModeMapping[tp]
-	if !exist {
-		return errors.New("invalid mode")
-	}
-	*e = mode
-	return nil
-}
-
-// MarshalJSON serialize EnhancedMode with json
-func (e EnhancedMode) MarshalJSON() ([]byte, error) {
-	return json.Marshal(e.String())
-}
-
-func (e EnhancedMode) String() string {
-	switch e {
-	case NORMAL:
-		return "normal"
-	case FAKEIP:
-		return "fake-ip"
-	case MAPPING:
-		return "redir-host"
-	default:
-		return "unknown"
-	}
-}
-
 func putMsgToCache(c *cache.LruCache, key string, msg *D.Msg) {
 	var ttl uint32
 	switch {
@@ -138,9 +70,10 @@ func transform(servers []NameServer, resolver *Resolver) []dnsClient {
 				UDPSize: 4096,
 				Timeout: 5 * time.Second,
 			},
-			port: port,
-			host: host,
-			r:    resolver,
+			port:  port,
+			host:  host,
+			iface: s.Interface,
+			r:     resolver,
 		})
 	}
 	return ret
diff --git a/go.mod b/go.mod
index 65945cf8..67e85d00 100644
--- a/go.mod
+++ b/go.mod
@@ -16,7 +16,9 @@ require (
 	github.com/sirupsen/logrus v1.8.1
 	github.com/stretchr/testify v1.7.0
 	github.com/xtls/go v0.0.0-20201118062508-3632bf3b7499
+	go.etcd.io/bbolt v1.3.6
 	go.uber.org/atomic v1.9.0
+	go.uber.org/automaxprocs v1.4.0
 	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
 	golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
diff --git a/go.sum b/go.sum
index 09d1e7b5..690283a0 100644
--- a/go.sum
+++ b/go.sum
@@ -580,6 +580,8 @@ github.com/yvasiyarov/newrelic_platform_go v0.0.0-20140908184405-b21fdbd4370f/go
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
+go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
+go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
 go.etcd.io/etcd v0.5.0-alpha.5.0.20200910180754-dd1b699fc489/go.mod h1:yVHk9ub3CSBatqGNg7GRmsnfLWtoW60w4eDYfh7vHDg=
 go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1/go.mod h1:SNgMg+EgDFwmvSmLRTNKC5fegJjB7v23qTQ0XLGUNHk=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
@@ -595,6 +597,8 @@ go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/automaxprocs v1.4.0 h1:CpDZl6aOlLhReez+8S3eEotD7Jx0Os++lemPlMULQP0=
+go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
@@ -778,6 +782,7 @@ golang.org/x/sys v0.0.0-20200905004654-be1d3432aa8f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200916030750-2334cc1a136f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200922070232-aee5d888a860/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
diff --git a/hub/executor/executor.go b/hub/executor/executor.go
index 7a50b940..16602d15 100644
--- a/hub/executor/executor.go
+++ b/hub/executor/executor.go
@@ -2,7 +2,6 @@ package executor
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"runtime"
@@ -31,15 +30,13 @@ import (
 	"github.com/Dreamacro/clash/tunnel"
 )
 
-var (
-	mux sync.Mutex
-)
+var mux sync.Mutex
 
 func readConfig(path string) ([]byte, error) {
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		return nil, err
 	}
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return nil, err
 	}
diff --git a/listener/auth/auth.go b/listener/auth/auth.go
index 2c29e186..70473114 100644
--- a/listener/auth/auth.go
+++ b/listener/auth/auth.go
@@ -4,9 +4,7 @@ import (
 	"github.com/Dreamacro/clash/component/auth"
 )
 
-var (
-	authenticator auth.Authenticator
-)
+var authenticator auth.Authenticator
 
 func Authenticator() auth.Authenticator {
 	return authenticator
diff --git a/listener/http/client.go b/listener/http/client.go
index 15078b0a..873a9a3c 100644
--- a/listener/http/client.go
+++ b/listener/http/client.go
@@ -19,7 +19,6 @@ func newClient(source net.Addr, in chan<- C.ConnContext) *http.Client {
 			MaxIdleConns:          100,
 			IdleConnTimeout:       90 * time.Second,
 			TLSHandshakeTimeout:   10 * time.Second,
-			ResponseHeaderTimeout: 10 * time.Second,
 			ExpectContinueTimeout: 1 * time.Second,
 			DialContext: func(context context.Context, network, address string) (net.Conn, error) {
 				if network != "tcp" && network != "tcp4" && network != "tcp6" {
diff --git a/listener/http/proxy.go b/listener/http/proxy.go
index 229106df..23a73739 100644
--- a/listener/http/proxy.go
+++ b/listener/http/proxy.go
@@ -1,6 +1,7 @@
 package http
 
 import (
+	"fmt"
 	"net"
 	"net/http"
 	"strings"
@@ -43,11 +44,8 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 
 		if trusted {
 			if request.Method == http.MethodConnect {
-				resp = responseWith(200)
-				resp.Status = "Connection established"
-				resp.ContentLength = -1
-
-				if resp.Write(conn) != nil {
+				// Manual writing to support CONNECT for http 1.0 (workaround for uplay client)
+				if _, err = fmt.Fprintf(conn, "HTTP/%d.%d %03d %s\r\n\r\n", request.ProtoMajor, request.ProtoMinor, http.StatusOK, "Connection established"); err != nil {
 					break // close connection
 				}
 
@@ -67,11 +65,11 @@ func HandleConn(c net.Conn, in chan<- C.ConnContext, cache *cache.Cache) {
 			removeExtraHTTPHostPort(request)
 
 			if request.URL.Scheme == "" || request.URL.Host == "" {
-				resp = responseWith(http.StatusBadRequest)
+				resp = responseWith(request, http.StatusBadRequest)
 			} else {
 				resp, err = client.Do(request)
 				if err != nil {
-					resp = responseWith(http.StatusBadGateway)
+					resp = responseWith(request, http.StatusBadGateway)
 				}
 			}
 
@@ -100,7 +98,7 @@ func authenticate(request *http.Request, cache *cache.Cache) *http.Response {
 	if authenticator != nil {
 		credential := parseBasicProxyAuthorization(request)
 		if credential == "" {
-			resp := responseWith(http.StatusProxyAuthRequired)
+			resp := responseWith(request, http.StatusProxyAuthRequired)
 			resp.Header.Set("Proxy-Authenticate", "Basic")
 			return resp
 		}
@@ -114,20 +112,20 @@ func authenticate(request *http.Request, cache *cache.Cache) *http.Response {
 		if !authed.(bool) {
 			log.Infoln("Auth failed from %s", request.RemoteAddr)
 
-			return responseWith(http.StatusForbidden)
+			return responseWith(request, http.StatusForbidden)
 		}
 	}
 
 	return nil
 }
 
-func responseWith(statusCode int) *http.Response {
+func responseWith(request *http.Request, statusCode int) *http.Response {
 	return &http.Response{
 		StatusCode: statusCode,
 		Status:     http.StatusText(statusCode),
-		Proto:      "HTTP/1.1",
-		ProtoMajor: 1,
-		ProtoMinor: 1,
+		Proto:      request.Proto,
+		ProtoMajor: request.ProtoMajor,
+		ProtoMinor: request.ProtoMinor,
 		Header:     http.Header{},
 	}
 }
diff --git a/listener/socks/tcp.go b/listener/socks/tcp.go
index 49d0a1e3..29016f5b 100644
--- a/listener/socks/tcp.go
+++ b/listener/socks/tcp.go
@@ -2,7 +2,6 @@ package socks
 
 import (
 	"io"
-	"io/ioutil"
 	"net"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
@@ -102,7 +101,7 @@ func HandleSocks5(conn net.Conn, in chan<- C.ConnContext) {
 	}
 	if command == socks5.CmdUDPAssociate {
 		defer conn.Close()
-		io.Copy(ioutil.Discard, conn)
+		io.Copy(io.Discard, conn)
 		return
 	}
 	in <- inbound.NewSocket(target, conn, C.SOCKS5)
diff --git a/listener/tproxy/tproxy_linux_iptables.go b/listener/tproxy/tproxy_linux_iptables.go
index 2ca5a216..09650837 100644
--- a/listener/tproxy/tproxy_linux_iptables.go
+++ b/listener/tproxy/tproxy_linux_iptables.go
@@ -109,7 +109,6 @@ func SetTProxyLinuxIPTables(ifname string, tport int, dport int) error {
 }
 
 func CleanUpTProxyLinuxIPTables() {
-
 	if interfaceName == "" || tproxyPort == 0 || dnsPort == 0 {
 		return
 	}
@@ -125,7 +124,6 @@ func CleanUpTProxyLinuxIPTables() {
 	execCmd(fmt.Sprintf("ip -f inet route del local default dev %s table %s", interfaceName, PROXY_ROUTE_TABLE))
 
 	// clean FORWARD
-	//execCmd("sysctl -w net.ipv4.ip_forward=0")
 	execCmd(fmt.Sprintf("iptables -t filter -D FORWARD -i %s ! -o %s -j ACCEPT", interfaceName, interfaceName))
 	execCmd(fmt.Sprintf("iptables -t filter -D FORWARD -i %s -o %s -j ACCEPT", interfaceName, interfaceName))
 	execCmd(fmt.Sprintf("iptables -t filter -D FORWARD -o %s -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT", interfaceName))
diff --git a/log/level.go b/log/level.go
index ea223c12..f70116a3 100644
--- a/log/level.go
+++ b/log/level.go
@@ -5,16 +5,14 @@ import (
 	"errors"
 )
 
-var (
-	// LogLevelMapping is a mapping for LogLevel enum
-	LogLevelMapping = map[string]LogLevel{
-		ERROR.String():   ERROR,
-		WARNING.String(): WARNING,
-		INFO.String():    INFO,
-		DEBUG.String():   DEBUG,
-		SILENT.String():  SILENT,
-	}
-)
+// LogLevelMapping is a mapping for LogLevel enum
+var LogLevelMapping = map[string]LogLevel{
+	ERROR.String():   ERROR,
+	WARNING.String(): WARNING,
+	INFO.String():    INFO,
+	DEBUG.String():   DEBUG,
+	SILENT.String():  SILENT,
+}
 
 const (
 	DEBUG LogLevel = iota
diff --git a/main.go b/main.go
index 79b48804..8bc6761a 100644
--- a/main.go
+++ b/main.go
@@ -14,6 +14,8 @@ import (
 	"github.com/Dreamacro/clash/hub"
 	"github.com/Dreamacro/clash/hub/executor"
 	"github.com/Dreamacro/clash/log"
+
+	"go.uber.org/automaxprocs/maxprocs"
 )
 
 var (
@@ -44,6 +46,7 @@ func init() {
 }
 
 func main() {
+	maxprocs.Set(maxprocs.Logger(func(string, ...interface{}) {}))
 	if version {
 		fmt.Printf("Clash %s %s %s with %s %s\n", C.Version, runtime.GOOS, runtime.GOARCH, runtime.Version(), C.BuildTime)
 		return
@@ -64,7 +67,7 @@ func main() {
 		}
 		C.SetConfig(configFile)
 	} else {
-		configFile := filepath.Join(C.Path.HomeDir(), C.Path.Config())
+		configFile = filepath.Join(C.Path.HomeDir(), C.Path.Config())
 		C.SetConfig(configFile)
 	}
 
diff --git a/rule/geodata/strmatcher/ac_automaton_matcher.go b/rule/geodata/strmatcher/ac_automaton_matcher.go
index b9a171e0..ef0bc5d9 100644
--- a/rule/geodata/strmatcher/ac_automaton_matcher.go
+++ b/rule/geodata/strmatcher/ac_automaton_matcher.go
@@ -235,8 +235,6 @@ func (ac *ACAutomaton) Match(s string) bool {
 			if fullMatch {
 				return true
 			}
-			//default:
-			//	//break // ineffective break statement, code "break" can not pass staticcheck check. don't sure that mean, so just block it.
 		}
 	}
 	return fullMatch && ac.exists[node].exist
diff --git a/rule/port.go b/rule/port.go
index ed774ff2..70e5abfb 100644
--- a/rule/port.go
+++ b/rule/port.go
@@ -68,7 +68,6 @@ func (p *Port) matchPortReal(portRef string) bool {
 }
 
 func NewPort(port string, adapter string, isSource bool, ruleExtra *C.RuleExtra) (*Port, error) {
-	//the port format should be like this: "123/136/137-139" or "[123]/[136-139]"
 	ports := strings.Split(port, "/")
 	if len(ports) > 28 {
 		return nil, fmt.Errorf("%s, too many ports to use, maximum support 28 ports", errPayload.Error())
@@ -93,7 +92,6 @@ func NewPort(port string, adapter string, isSource bool, ruleExtra *C.RuleExtra)
 
 		if subPortsLen == 1 {
 			portList = append(portList, portReal{portStart, -1})
-
 		} else if subPortsLen == 2 {
 			portEnd, err1 := strconv.Atoi(strings.Trim(subPorts[1], "[ ]"))
 			if err1 != nil || portEnd < 0 || portEnd > 65535 {
diff --git a/rule/process.go b/rule/process.go
index 95351289..b60c46bb 100644
--- a/rule/process.go
+++ b/rule/process.go
@@ -24,9 +24,7 @@ func (ps *Process) RuleType() C.RuleType {
 }
 
 func (ps *Process) Match(metadata *C.Metadata) bool {
-
 	if metadata.Process != "" {
-		//log.Debugln("Use cache process: %s", metadata.Process)
 		return strings.EqualFold(metadata.Process, ps.process)
 	}
 
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 00000000..012d88d5
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,8 @@
+lint:
+	golangci-lint run --disable-all -E govet -E gofumpt -E megacheck ./...
+
+test:
+	go test -p 1 -v ./...
+
+benchmark:
+	go test -benchmem -run=^$ -bench .
diff --git a/test/README.md b/test/README.md
index 823fc544..a95f3aea 100644
--- a/test/README.md
+++ b/test/README.md
@@ -45,7 +45,7 @@ Prerequisite
 * docker (support Linux and macOS)
 
 ```
-$ go test -p 1 -v
+$ make test
 ```
 
 benchmark (Linux)
@@ -55,5 +55,5 @@ benchmark (Linux)
 > (change chunkSize to measure the maximum throughput of clash on your machine)
 
 ```
-$ go test -benchmem -run=^$ -bench .
+$ make benchmark
 ```
diff --git a/test/clash_test.go b/test/clash_test.go
index 4011b04a..5eb9d5bd 100644
--- a/test/clash_test.go
+++ b/test/clash_test.go
@@ -31,6 +31,7 @@ const (
 	ImageShadowsocksRust = "ghcr.io/shadowsocks/ssserver-rust:latest"
 	ImageVmess           = "v2fly/v2fly-core:latest"
 	ImageTrojan          = "trojangfw/trojan:latest"
+	ImageTrojanGo        = "p4gefau1t/trojan-go:latest"
 	ImageSnell           = "icpz/snell-server:latest"
 	ImageXray            = "teddysun/xray:latest"
 )
@@ -96,8 +97,10 @@ func init() {
 
 	images := []string{
 		ImageShadowsocks,
+		ImageShadowsocksRust,
 		ImageVmess,
 		ImageTrojan,
+		ImageTrojanGo,
 		ImageSnell,
 		ImageXray,
 	}
@@ -582,7 +585,7 @@ func testSuit(t *testing.T, proxy C.ProxyAdapter) {
 		return
 	}
 
-	pc, err := proxy.DialUDP(&C.Metadata{
+	pc, err := proxy.ListenPacketContext(context.Background(), &C.Metadata{
 		NetWork:  C.UDP,
 		DstIP:    localIP,
 		DstPort:  "10001",
@@ -595,7 +598,7 @@ func testSuit(t *testing.T, proxy C.ProxyAdapter) {
 
 	assert.NoError(t, testPingPongWithPacketConn(t, pc))
 
-	pc, err = proxy.DialUDP(&C.Metadata{
+	pc, err = proxy.ListenPacketContext(context.Background(), &C.Metadata{
 		NetWork:  C.UDP,
 		DstIP:    localIP,
 		DstPort:  "10001",
@@ -608,7 +611,7 @@ func testSuit(t *testing.T, proxy C.ProxyAdapter) {
 
 	assert.NoError(t, testLargeDataWithPacketConn(t, pc))
 
-	pc, err = proxy.DialUDP(&C.Metadata{
+	pc, err = proxy.ListenPacketContext(context.Background(), &C.Metadata{
 		NetWork:  C.UDP,
 		DstIP:    localIP,
 		DstPort:  "10001",
diff --git a/test/config/trojan-ws.json b/test/config/trojan-ws.json
new file mode 100644
index 00000000..efc0acbd
--- /dev/null
+++ b/test/config/trojan-ws.json
@@ -0,0 +1,20 @@
+{
+    "run_type": "server",
+    "local_addr": "0.0.0.0",
+    "local_port": 10002,
+    "disable_http_check": true,
+    "password": [
+        "example"
+    ],
+    "websocket": {
+        "enabled": true,
+        "path": "/",
+        "host": "example.org"
+    },
+    "ssl": {
+        "verify": true,
+        "cert": "/fullchain.pem",
+        "key": "/privkey.pem",
+        "sni": "example.org"
+    }
+}
\ No newline at end of file
diff --git a/test/go.mod b/test/go.mod
index 8165d639..b0bdf509 100644
--- a/test/go.mod
+++ b/test/go.mod
@@ -23,7 +23,7 @@ require (
 	github.com/gofrs/uuid v4.0.0+incompatible // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.0 // indirect
-	github.com/google/btree v1.0.0 // indirect
+	github.com/google/btree v1.0.1 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/insomniacslk/dhcp v0.0.0-20210827173440-b95caade3eac // indirect
@@ -32,21 +32,24 @@ require (
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
+	github.com/oschwald/geoip2-golang v1.5.0 // indirect
+	github.com/oschwald/maxminddb-golang v1.8.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/u-root/uio v0.0.0-20210528114334-82958018845c // indirect
 	github.com/xtls/go v0.0.0-20201118062508-3632bf3b7499 // indirect
+	go.etcd.io/bbolt v1.3.6 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
 	golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34 // indirect
 	golang.org/x/text v0.3.6 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
-	google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7 // indirect
+	google.golang.org/genproto v0.0.0-20210312152112-fc591d9ea70f // indirect
 	google.golang.org/grpc v1.40.0 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
-	gvisor.dev/gvisor v0.0.0-20210519191755-bd7eb2c99ba9 // indirect
+	gvisor.dev/gvisor v0.0.0-20210922003438-b39716d116fd // indirect
 )
diff --git a/test/go.sum b/test/go.sum
index f440afee..963ebe8f 100644
--- a/test/go.sum
+++ b/test/go.sum
@@ -15,7 +15,9 @@ cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZ
 cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
-cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
+cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
+cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -82,6 +84,7 @@ github.com/Microsoft/hcsshim/test v0.0.0-20210227013316-43a75bb4edd3/go.mod h1:m
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
@@ -95,6 +98,7 @@ github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kd
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
 github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
+github.com/bazelbuild/rules_go v0.27.0/go.mod h1:MC23Dc/wkXEyk3Wpq6lCqz0ZAYOZDw2DR5y3N1q2i7M=
 github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -103,6 +107,7 @@ github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kB
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
 github.com/bits-and-blooms/bitset v1.2.0/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
 github.com/blang/semver v3.1.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
+github.com/blang/semver v3.5.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/bshuster-repo/logrus-logstash-hook v0.4.1/go.mod h1:zsTqEiSzDgAa/8GZR7E1qaXrhYNDKBYy5/dWPTIflbk=
@@ -188,6 +193,7 @@ github.com/containerd/go-runc v0.0.0-20200220073739-7016d3ce2328/go.mod h1:PpyHr
 github.com/containerd/go-runc v0.0.0-20201020171139-16b287bc67d0/go.mod h1:cNU0ZbCgCQVZK4lgG3P+9tn9/PaJNmoDXPpoJhDR+Ok=
 github.com/containerd/go-runc v1.0.0/go.mod h1:cNU0ZbCgCQVZK4lgG3P+9tn9/PaJNmoDXPpoJhDR+Ok=
 github.com/containerd/imgcrypt v1.0.1/go.mod h1:mdd8cEPW7TPgNG4FpuP3sGBiQ7Yi/zak9TYCG3juvb0=
+github.com/containerd/imgcrypt v1.0.3/go.mod h1:v4X3p/H0lzcvVE0r7whbRYjYuK9Y2KEJnL08tXT63Is=
 github.com/containerd/imgcrypt v1.0.4-0.20210301171431-0ae5c75f59ba/go.mod h1:6TNsg0ctmizkrOgXRNQjAPFWpMYRWuiB6dSF4Pfa5SA=
 github.com/containerd/imgcrypt v1.1.1-0.20210312161619-7ed62a527887/go.mod h1:5AZJNI6sLHJljKuI9IHnw1pWqo/F0nGDOuR9zgTs7ow=
 github.com/containerd/imgcrypt v1.1.1/go.mod h1:xpLnwiQmEUJPvQoAapeb2SNCxz7Xr6PJrXQb0Dpc4ms=
@@ -213,8 +219,10 @@ github.com/containernetworking/cni v0.7.1/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ
 github.com/containernetworking/cni v0.8.0/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
 github.com/containernetworking/cni v0.8.1/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
 github.com/containernetworking/plugins v0.8.6/go.mod h1:qnw5mN19D8fIwkqW7oHHYDHVlzhJpcY6TQxn/fUyDDM=
+github.com/containernetworking/plugins v0.8.7/go.mod h1:R7lXeZaBzpfqapcAbHRW8/CYwm0dHzbz0XEjofx0uB0=
 github.com/containernetworking/plugins v0.9.1/go.mod h1:xP/idU2ldlzN6m4p5LmGiwRDjeJr6FLK6vuiUwoH7P8=
 github.com/containers/ocicrypt v1.0.1/go.mod h1:MeJDzk1RJHv89LjsH0Sp5KTY3ZYkjXO/C+bKAeWFIrc=
+github.com/containers/ocicrypt v1.0.3/go.mod h1:CUBa+8MRNL/VkpxYIpaMtgn1WgXGyvPQj8jcy0EVG6g=
 github.com/containers/ocicrypt v1.1.0/go.mod h1:b8AOe0YR67uU8OqfVNcznfFpAzu3rdgUV4GP9qXPfu4=
 github.com/containers/ocicrypt v1.1.1/go.mod h1:Dm55fwWm1YZAjYRaJ94z2mfZikIyIN4B0oB3dj3jFxY=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
@@ -308,14 +316,18 @@ github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V
 github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
 github.com/go-logr/logr v0.2.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
 github.com/go-openapi/jsonpointer v0.0.0-20160704185906-46af16f9f7b1/go.mod h1:+35s3my2LFTysnkMfxsJBAMHj/DoqoB9knIWoYG/Vk0=
+github.com/go-openapi/jsonpointer v0.17.0/go.mod h1:cOnomiV+CVVwFLk0A/MExoFMjwdsUdVpsRhURCKh+3M=
 github.com/go-openapi/jsonpointer v0.19.2/go.mod h1:3akKfEdA7DF1sugOqz1dVQHBcuDBPKZGEoHC/NkiQRg=
 github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
 github.com/go-openapi/jsonreference v0.0.0-20160704190145-13c6e3589ad9/go.mod h1:W3Z9FmVs9qj+KR4zFKmDPGiLdk1D9Rlm7cyMvf57TTg=
+github.com/go-openapi/jsonreference v0.17.0/go.mod h1:g4xxGn04lDIRh0GJb5QlpE3HfopLOL6uZrK/VgnsK9I=
 github.com/go-openapi/jsonreference v0.19.2/go.mod h1:jMjeRr2HHw6nAVajTXJ4eiUwohSTlpa0o73RUL1owJc=
 github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL98+wF9xc8zWvFonSJ8=
 github.com/go-openapi/spec v0.0.0-20160808142527-6aced65f8501/go.mod h1:J8+jY1nAiCcj+friV/PDoE1/3eeccG9LYBs0tYvLOWc=
+github.com/go-openapi/spec v0.19.0/go.mod h1:XkF/MOi14NmjsfZ8VtAKf8pIlbZzyoTvZsdfssdxcBI=
 github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8Lj9mJglo=
 github.com/go-openapi/swag v0.0.0-20160704191624-1d0bd113de87/go.mod h1:DXUve3Dpr1UfpPtxFw+EFuQ41HhCWZfha5jSVRG7C7I=
+github.com/go-openapi/swag v0.17.0/go.mod h1:AByQ+nYG6gQg71GINrmuDXCPWdL640yX49/kXLo40Tg=
 github.com/go-openapi/swag v0.19.2/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
@@ -329,6 +341,7 @@ github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPh
 github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/googleapis v1.2.0/go.mod h1:Njal3psf3qN6dwBtQfUmBZh2ybovJ0tlu3o/AC7HYjU=
 github.com/gogo/googleapis v1.4.0/go.mod h1:5YRNX2z1oM5gXdAkurHa942MDgEJyk02w4OecKY87+c=
+github.com/gogo/googleapis v1.4.1/go.mod h1:2lpHqI5OcWCtVElxXnPt+s8oJvMpySlOyM6xDCrzib4=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
 github.com/gogo/protobuf v1.2.2-0.20190723190241-65acae22fc9d/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
@@ -349,6 +362,7 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
 github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
+github.com/golang/mock v1.5.0/go.mod h1:CWnOUgYIOo4TcNZ0wHX3YZCqsaM1I1Jvs6v3mP3KVu8=
 github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -367,8 +381,9 @@ github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
 github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
+github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
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@@ -377,6 +392,7 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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+github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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@@ -396,8 +412,10 @@ github.com/google/pprof v0.0.0-20200229191704-1ebb73c60ed3/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
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-github.com/google/pprof v0.0.0-20201218002935-b9804c9f04c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
-github.com/google/pprof v0.0.0-20210115211752-39141e76b647/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
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+github.com/google/pprof v0.0.0-20210423192551-a2663126120b/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
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 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -407,6 +425,7 @@ github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
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 github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
+github.com/googleapis/gnostic v0.4.0/go.mod h1:on+2t9HRStVgn95RSsFWFz+6Q0Snyqv1awfrALZdbtU=
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@@ -439,6 +458,7 @@ github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/imdario/mergo v0.3.8/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/imdario/mergo v0.3.9/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/imdario/mergo v0.3.10/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
@@ -483,6 +503,7 @@ github.com/kr328/tun2socket v0.0.0-20210412191540-3d56c47e2d99 h1:dkEFEnGUg2z/FA
 github.com/kr328/tun2socket v0.0.0-20210412191540-3d56c47e2d99/go.mod h1:FWfSixjrLgtK+dHkDoN6lHMNhvER24gnjUZd/wt8Z9o=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.7.0/go.mod h1:KAzv3t3aY1NaHWoQz1+4F1ccyAH66Jk7yos7ldAVICs=
@@ -545,6 +566,7 @@ github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGV
 github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
+github.com/onsi/gomega v1.10.0/go.mod h1:Ho0h+IUsWyvy1OpqCwxlQ/21gkhVunqlU8fDGcoTdcA=
 github.com/onsi/gomega v1.10.3/go.mod h1:V9xEwhxec5O8UDM77eCW8vLymOMltsqPVYWrpDsH8xc=
 github.com/opencontainers/go-digest v0.0.0-20170106003457-a6d0ee40d420/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/go-digest v0.0.0-20180430190053-c9281466c8b2/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
@@ -559,6 +581,7 @@ github.com/opencontainers/runc v0.0.0-20190115041553-12f6a991201f/go.mod h1:qT5X
 github.com/opencontainers/runc v0.1.1/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
 github.com/opencontainers/runc v1.0.0-rc8.0.20190926000215-3e425f80a8c9/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
 github.com/opencontainers/runc v1.0.0-rc9/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
+github.com/opencontainers/runc v1.0.0-rc90/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
 github.com/opencontainers/runc v1.0.0-rc93/go.mod h1:3NOsor4w32B2tC0Zbl8Knk4Wg84SM2ImC1fxBuqJ/H0=
 github.com/opencontainers/runc v1.0.1/go.mod h1:aTaHFFwQXuA71CiyxOdFFIorAoemI04suvGRQFzWTD0=
 github.com/opencontainers/runtime-spec v0.1.2-0.20190507144316-5b71a03e2700/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
@@ -571,6 +594,10 @@ github.com/opencontainers/runtime-tools v0.0.0-20181011054405-1d69bd0f9c39/go.mo
 github.com/opencontainers/selinux v1.6.0/go.mod h1:VVGKuOLlE7v4PJyT6h7mNWvq1rzqiriPsEqVhc+svHE=
 github.com/opencontainers/selinux v1.8.0/go.mod h1:RScLhm78qiWa2gbVCcGkC7tCGdgk3ogry1nUQF8Evvo=
 github.com/opencontainers/selinux v1.8.2/go.mod h1:MUIHuUEvKB1wtJjQdOyYRgOnLD2xAPP8dBsCoU0KuF8=
+github.com/oschwald/geoip2-golang v1.5.0 h1:igg2yQIrrcRccB1ytFXqBfOHCjXWIoMv85lVJ1ONZzw=
+github.com/oschwald/geoip2-golang v1.5.0/go.mod h1:xdvYt5xQzB8ORWFqPnqMwZpCpgNagttWdoZLlJQzg7s=
+github.com/oschwald/maxminddb-golang v1.8.0 h1:Uh/DSnGoxsyp/KYbY1AuP0tYEwfs0sCph9p/UMXK/Hk=
+github.com/oschwald/maxminddb-golang v1.8.0/go.mod h1:RXZtst0N6+FY/3qCNmZMBApR19cdQj43/NM9VkrNAis=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
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 github.com/pelletier/go-toml v1.8.1/go.mod h1:T2/BmBdy8dvIRq1a/8aqjN41wvWlN4lrapLU/GW4pbc=
@@ -586,6 +613,7 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/pquerna/cachecontrol v0.0.0-20171018203845-0dec1b30a021/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=
 github.com/prometheus/client_golang v0.0.0-20180209125602-c332b6f63c06/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
+github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM=
 github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDft0ttaMvbicHlPoso=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
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@@ -597,12 +625,14 @@ github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:
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 github.com/prometheus/common v0.0.0-20181113130724-41aa239b4cce/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
+github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
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 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
+github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.0-20190522114515-bc1a522cf7b1/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
@@ -703,6 +733,8 @@ github.com/yvasiyarov/newrelic_platform_go v0.0.0-20140908184405-b21fdbd4370f/go
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
+go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
+go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
 go.etcd.io/etcd v0.5.0-alpha.5.0.20200910180754-dd1b699fc489/go.mod h1:yVHk9ub3CSBatqGNg7GRmsnfLWtoW60w4eDYfh7vHDg=
 go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1/go.mod h1:SNgMg+EgDFwmvSmLRTNKC5fegJjB7v23qTQ0XLGUNHk=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
@@ -711,12 +743,14 @@ go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
+go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
@@ -734,6 +768,7 @@ golang.org/x/crypto v0.0.0-20200220183623-bac4c82f6975/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/crypto v0.0.0-20210317152858-513c2a44f670/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
@@ -770,12 +805,15 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181005035420-146acd28ed58/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181011144130-49bb7cea24b1/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -814,7 +852,9 @@ golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201031054903-ff519b6c9102/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f h1:w6wWR0H+nyVpbSAQbzVEIACVyr/h8l/BEkY6Sokc7Eg=
 golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
@@ -826,6 +866,10 @@ golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4Iltr
 golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20201109201403-9fd604954f58/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210402161424-2e8d93401602/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -877,6 +921,7 @@ golang.org/x/sys v0.0.0-20191115151921-52ab43148777/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191210023423-ac6580df4449/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191224085550-c709ea063b76/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -903,6 +948,7 @@ golang.org/x/sys v0.0.0-20200905004654-be1d3432aa8f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200916030750-2334cc1a136f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200922070232-aee5d888a860/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201009025420-dfb3f7c4e634/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201101102859-da207088b7d1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -911,9 +957,13 @@ golang.org/x/sys v0.0.0-20201117170446-d9b008d0a637/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201202213521-69691e467435/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210324051608-47abb6519492/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210426230700-d19ff857e887/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -922,6 +972,7 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34 h1:GkvMjFtXUmahfDtashnc1mnrCtuBVcwse5QV2lUk/tI=
 golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -930,6 +981,7 @@ golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
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@@ -989,8 +1041,9 @@ golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc
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 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
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 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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@@ -1016,6 +1069,9 @@ google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSr
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+google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
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@@ -1060,8 +1116,13 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
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+google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210312152112-fc591d9ea70f h1:YRBxgxUW6GFi+AKsn8WGA9k1SZohK+gGuEqdeT5aoNQ=
+google.golang.org/genproto v0.0.0-20210312152112-fc591d9ea70f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
@@ -1082,8 +1143,9 @@ google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM
 google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
-google.golang.org/grpc v1.36.0-dev.0.20210208035533-9280052d3665/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.39.0-dev.0.20210518002758-2713b77e8526/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
@@ -1096,7 +1158,6 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.25.1-0.20201020201750-d3470999428b/go.mod h1:hFxJC2f0epmp1elRCiEGJTKAWbwxZ2nvqZdHl3FQXCY=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
@@ -1136,8 +1197,8 @@ gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
 gotest.tools/v3 v3.0.3 h1:4AuOwCGf4lLR9u3YOe2awrHygurzhO/HeQ6laiA6Sx0=
 gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=
-gvisor.dev/gvisor v0.0.0-20210519191755-bd7eb2c99ba9 h1:7Xn0JTQiWLxAKGI5FCtQH4DVnQ4K7tBZ6hVSgitTZH8=
-gvisor.dev/gvisor v0.0.0-20210519191755-bd7eb2c99ba9/go.mod h1:ucHEMlckp+S/YzKEpwwAyGBhAh807Wxq/8Erc6gFxCE=
+gvisor.dev/gvisor v0.0.0-20210922003438-b39716d116fd h1:m5QXicYwyY+W9EHMzkVxCEmeiD4O+XJeHOGb2wEOgP8=
+gvisor.dev/gvisor v0.0.0-20210922003438-b39716d116fd/go.mod h1:m1RK/gef4nU1CWOFscQWVk7iUgGH2Hz9Ee+lgeCzOBo=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
@@ -1162,6 +1223,7 @@ k8s.io/client-go v0.16.13/go.mod h1:UKvVT4cajC2iN7DCjLgT0KVY/cbY6DGdUCyRiIfws5M=
 k8s.io/client-go v0.20.1/go.mod h1:/zcHdt1TeWSd5HoUe6elJmHSQ6uLLgp4bIJHVEuy+/Y=
 k8s.io/client-go v0.20.4/go.mod h1:LiMv25ND1gLUdBeYxBIwKpkSC5IsozMMmOOeSJboP+k=
 k8s.io/client-go v0.20.6/go.mod h1:nNQMnOvEUEsOzRRFIIkdmYOjAZrC8bgq0ExboWSU1I0=
+k8s.io/component-base v0.16.13/go.mod h1:cNe9ZU2A6tqBG0gPQ4/T/KolI9Cv2NA1+7uvmkA7Cyc=
 k8s.io/component-base v0.20.1/go.mod h1:guxkoJnNoh8LNrbtiQOlyp2Y2XFCZQmrcg2n/DeYNLk=
 k8s.io/component-base v0.20.4/go.mod h1:t4p9EdiagbVCJKrQ1RsA5/V4rFQNDfRlevJajlGwgjI=
 k8s.io/component-base v0.20.6/go.mod h1:6f1MPBAeI+mvuts3sIdtpjljHWBQ2cIy38oBIWMYnrM=
diff --git a/test/trojan_test.go b/test/trojan_test.go
index a57dab99..d1ab2a00 100644
--- a/test/trojan_test.go
+++ b/test/trojan_test.go
@@ -93,6 +93,44 @@ func TestClash_TrojanGrpc(t *testing.T) {
 	testSuit(t, proxy)
 }
 
+func TestClash_TrojanWebsocket(t *testing.T) {
+	cfg := &container.Config{
+		Image:        ImageTrojanGo,
+		ExposedPorts: defaultExposedPorts,
+	}
+	hostCfg := &container.HostConfig{
+		PortBindings: defaultPortBindings,
+		Binds: []string{
+			fmt.Sprintf("%s:/etc/trojan-go/config.json", C.Path.Resolve("trojan-ws.json")),
+			fmt.Sprintf("%s:/fullchain.pem", C.Path.Resolve("example.org.pem")),
+			fmt.Sprintf("%s:/privkey.pem", C.Path.Resolve("example.org-key.pem")),
+		},
+	}
+
+	id, err := startContainer(cfg, hostCfg, "trojan-ws")
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+	defer cleanContainer(id)
+
+	proxy, err := outbound.NewTrojan(outbound.TrojanOption{
+		Name:           "trojan",
+		Server:         localIP.String(),
+		Port:           10002,
+		Password:       "example",
+		SNI:            "example.org",
+		SkipCertVerify: true,
+		UDP:            true,
+		Network:        "ws",
+	})
+	if err != nil {
+		assert.FailNow(t, err.Error())
+	}
+
+	time.Sleep(waitTime)
+	testSuit(t, proxy)
+}
+
 func Benchmark_Trojan(b *testing.B) {
 	cfg := &container.Config{
 		Image:        ImageTrojan,
diff --git a/test/vmess_test.go b/test/vmess_test.go
index b696fcea..1483cf0a 100644
--- a/test/vmess_test.go
+++ b/test/vmess_test.go
@@ -304,13 +304,13 @@ func TestClash_VmessWebsocketTLS(t *testing.T) {
 
 func TestClash_VmessGrpc(t *testing.T) {
 	cfg := &container.Config{
-		Image:        ImageXray,
+		Image:        ImageVmess,
 		ExposedPorts: defaultExposedPorts,
 	}
 	hostCfg := &container.HostConfig{
 		PortBindings: defaultPortBindings,
 		Binds: []string{
-			fmt.Sprintf("%s:/etc/xray/config.json", C.Path.Resolve("vmess-grpc.json")),
+			fmt.Sprintf("%s:/etc/v2ray/config.json", C.Path.Resolve("vmess-grpc.json")),
 			fmt.Sprintf("%s:/etc/ssl/v2ray/fullchain.pem", C.Path.Resolve("example.org.pem")),
 			fmt.Sprintf("%s:/etc/ssl/v2ray/privkey.pem", C.Path.Resolve("example.org-key.pem")),
 		},
diff --git a/transport/gun/gun.go b/transport/gun/gun.go
index e60d13d7..f6f76116 100644
--- a/transport/gun/gun.go
+++ b/transport/gun/gun.go
@@ -27,12 +27,10 @@ var (
 	ErrSmallBuffer   = errors.New("buffer too small")
 )
 
-var (
-	defaultHeader = http.Header{
-		"content-type": []string{"application/grpc"},
-		"user-agent":   []string{"grpc-go/1.36.0"},
-	}
-)
+var defaultHeader = http.Header{
+	"content-type": []string{"application/grpc"},
+	"user-agent":   []string{"grpc-go/1.36.0"},
+}
 
 type DialFn = func(network, addr string) (net.Conn, error)
 
diff --git a/transport/simple-obfs/tls.go b/transport/simple-obfs/tls.go
index 914cfe4a..1c609c15 100644
--- a/transport/simple-obfs/tls.go
+++ b/transport/simple-obfs/tls.go
@@ -78,6 +78,7 @@ func (to *TLSObfs) Read(b []byte) (int, error) {
 	// type + ver = 3
 	return to.read(b, 3)
 }
+
 func (to *TLSObfs) Write(b []byte) (int, error) {
 	length := len(b)
 	for i := 0; i < length; i += chunkSize {
diff --git a/transport/snell/cipher.go b/transport/snell/cipher.go
index f778e647..0f31aea5 100644
--- a/transport/snell/cipher.go
+++ b/transport/snell/cipher.go
@@ -20,6 +20,7 @@ func (sc *snellCipher) SaltSize() int { return 16 }
 func (sc *snellCipher) Encrypter(salt []byte) (cipher.AEAD, error) {
 	return sc.makeAEAD(snellKDF(sc.psk, salt, sc.KeySize()))
 }
+
 func (sc *snellCipher) Decrypter(salt []byte) (cipher.AEAD, error) {
 	return sc.makeAEAD(snellKDF(sc.psk, salt, sc.KeySize()))
 }
diff --git a/transport/snell/snell.go b/transport/snell/snell.go
index 8966b4bb..64807b81 100644
--- a/transport/snell/snell.go
+++ b/transport/snell/snell.go
@@ -30,9 +30,7 @@ const (
 	Version byte = 1
 )
 
-var (
-	endSignal = []byte{}
-)
+var endSignal = []byte{}
 
 type Snell struct {
 	net.Conn
diff --git a/transport/socks4/socks4.go b/transport/socks4/socks4.go
index c06bea20..a2941624 100644
--- a/transport/socks4/socks4.go
+++ b/transport/socks4/socks4.go
@@ -184,7 +184,7 @@ func isReservedIP(ip net.IP) bool {
 }
 
 func readUntilNull(r io.Reader) ([]byte, error) {
-	var buf = &bytes.Buffer{}
+	buf := &bytes.Buffer{}
 	var data [1]byte
 
 	for {
diff --git a/transport/ssr/protocol/auth_aes128_sha1.go b/transport/ssr/protocol/auth_aes128_sha1.go
index fab9d008..8ce57d28 100644
--- a/transport/ssr/protocol/auth_aes128_sha1.go
+++ b/transport/ssr/protocol/auth_aes128_sha1.go
@@ -14,8 +14,10 @@ import (
 	"github.com/Dreamacro/clash/transport/ssr/tools"
 )
 
-type hmacMethod func(key, data []byte) []byte
-type hashDigestMethod func([]byte) []byte
+type (
+	hmacMethod       func(key, data []byte) []byte
+	hashDigestMethod func([]byte) []byte
+)
 
 func init() {
 	register("auth_aes128_sha1", newAuthAES128SHA1, 9)
diff --git a/transport/trojan/trojan.go b/transport/trojan/trojan.go
index d39cbec1..9d9a33b9 100644
--- a/transport/trojan/trojan.go
+++ b/transport/trojan/trojan.go
@@ -8,10 +8,12 @@ import (
 	"errors"
 	"io"
 	"net"
+	"net/http"
 	"sync"
 
 	"github.com/Dreamacro/clash/common/pool"
 	"github.com/Dreamacro/clash/transport/socks5"
+	"github.com/Dreamacro/clash/transport/vmess"
 )
 
 const (
@@ -20,8 +22,10 @@ const (
 )
 
 var (
-	defaultALPN = []string{"h2", "http/1.1"}
-	crlf        = []byte{'\r', '\n'}
+	defaultALPN          = []string{"h2", "http/1.1"}
+	defaultWebsocketALPN = []string{"http/1.1"}
+
+	crlf = []byte{'\r', '\n'}
 )
 
 type Command = byte
@@ -38,6 +42,13 @@ type Option struct {
 	SkipCertVerify bool
 }
 
+type WebsocketOption struct {
+	Host    string
+	Port    string
+	Path    string
+	Headers http.Header
+}
+
 type Trojan struct {
 	option      *Option
 	hexPassword []byte
@@ -64,6 +75,29 @@ func (t *Trojan) StreamConn(conn net.Conn) (net.Conn, error) {
 	return tlsConn, nil
 }
 
+func (t *Trojan) StreamWebsocketConn(conn net.Conn, wsOptions *WebsocketOption) (net.Conn, error) {
+	alpn := defaultWebsocketALPN
+	if len(t.option.ALPN) != 0 {
+		alpn = t.option.ALPN
+	}
+
+	tlsConfig := &tls.Config{
+		NextProtos:         alpn,
+		MinVersion:         tls.VersionTLS12,
+		InsecureSkipVerify: t.option.SkipCertVerify,
+		ServerName:         t.option.ServerName,
+	}
+
+	return vmess.StreamWebsocketConn(conn, &vmess.WebsocketConfig{
+		Host:      wsOptions.Host,
+		Port:      wsOptions.Port,
+		Path:      wsOptions.Path,
+		Headers:   wsOptions.Headers,
+		TLS:       true,
+		TLSConfig: tlsConfig,
+	})
+}
+
 func (t *Trojan) WriteHeader(w io.Writer, command Command, socks5Addr []byte) error {
 	buf := pool.GetBuffer()
 	defer pool.PutBuffer(buf)
diff --git a/transport/v2ray-plugin/websocket.go b/transport/v2ray-plugin/websocket.go
index 317c172f..7591b4a8 100644
--- a/transport/v2ray-plugin/websocket.go
+++ b/transport/v2ray-plugin/websocket.go
@@ -1,6 +1,7 @@
 package obfs
 
 import (
+	"crypto/tls"
 	"net"
 	"net/http"
 
@@ -26,12 +27,22 @@ func NewV2rayObfs(conn net.Conn, option *Option) (net.Conn, error) {
 	}
 
 	config := &vmess.WebsocketConfig{
-		Host:           option.Host,
-		Port:           option.Port,
-		Path:           option.Path,
-		TLS:            option.TLS,
-		Headers:        header,
-		SkipCertVerify: option.SkipCertVerify,
+		Host:    option.Host,
+		Port:    option.Port,
+		Path:    option.Path,
+		Headers: header,
+	}
+
+	if option.TLS {
+		config.TLS = true
+		config.TLSConfig = &tls.Config{
+			ServerName:         option.Host,
+			InsecureSkipVerify: option.SkipCertVerify,
+			NextProtos:         []string{"http/1.1"},
+		}
+		if host := config.Headers.Get("Host"); host != "" {
+			config.TLSConfig.ServerName = host
+		}
 	}
 
 	var err error
diff --git a/transport/vmess/header.go b/transport/vmess/header.go
index 27a734be..67d407e6 100644
--- a/transport/vmess/header.go
+++ b/transport/vmess/header.go
@@ -92,7 +92,7 @@ func sealVMessAEADHeader(key [16]byte, data []byte, t time.Time) []byte {
 		payloadHeaderAEADEncrypted = payloadHeaderAEAD.Seal(nil, payloadHeaderAEADNonce, data, generatedAuthID[:])
 	}
 
-	var outputBuffer = &bytes.Buffer{}
+	outputBuffer := &bytes.Buffer{}
 
 	outputBuffer.Write(generatedAuthID[:])
 	outputBuffer.Write(payloadHeaderLengthAEADEncrypted)
diff --git a/transport/vmess/websocket.go b/transport/vmess/websocket.go
index f00e4c4b..f769dcce 100644
--- a/transport/vmess/websocket.go
+++ b/transport/vmess/websocket.go
@@ -28,6 +28,7 @@ type websocketConn struct {
 	rMux sync.Mutex
 	wMux sync.Mutex
 }
+
 type websocketWithEarlyDataConn struct {
 	net.Conn
 	underlay net.Conn
@@ -44,8 +45,7 @@ type WebsocketConfig struct {
 	Path                string
 	Headers             http.Header
 	TLS                 bool
-	SkipCertVerify      bool
-	ServerName          string
+	TLSConfig           *tls.Config
 	MaxEarlyData        int
 	EarlyDataHeaderName string
 }
@@ -253,17 +253,7 @@ func streamWebsocketConn(conn net.Conn, c *WebsocketConfig, earlyData *bytes.Buf
 	scheme := "ws"
 	if c.TLS {
 		scheme = "wss"
-		dialer.TLSClientConfig = &tls.Config{
-			ServerName:         c.Host,
-			InsecureSkipVerify: c.SkipCertVerify,
-			NextProtos:         []string{"http/1.1"},
-		}
-
-		if c.ServerName != "" {
-			dialer.TLSClientConfig.ServerName = c.ServerName
-		} else if host := c.Headers.Get("Host"); host != "" {
-			dialer.TLSClientConfig.ServerName = host
-		}
+		dialer.TLSClientConfig = c.TLSConfig
 	}
 
 	uri := url.URL{
diff --git a/tunnel/mode.go b/tunnel/mode.go
index 6e07a060..69660721 100644
--- a/tunnel/mode.go
+++ b/tunnel/mode.go
@@ -8,14 +8,12 @@ import (
 
 type TunnelMode int
 
-var (
-	// ModeMapping is a mapping for Mode enum
-	ModeMapping = map[string]TunnelMode{
-		Global.String(): Global,
-		Rule.String():   Rule,
-		Direct.String(): Direct,
-	}
-)
+// ModeMapping is a mapping for Mode enum
+var ModeMapping = map[string]TunnelMode{
+	Global.String(): Global,
+	Rule.String():   Rule,
+	Direct.String(): Direct,
+}
 
 const (
 	Global TunnelMode = iota
diff --git a/tunnel/tunnel.go b/tunnel/tunnel.go
index af67ff6e..4e2dceb6 100644
--- a/tunnel/tunnel.go
+++ b/tunnel/tunnel.go
@@ -1,6 +1,7 @@
 package tunnel
 
 import (
+	"context"
 	"fmt"
 	"net"
 	"runtime"
@@ -12,7 +13,7 @@ import (
 	"github.com/Dreamacro/clash/component/resolver"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/constant/provider"
-	"github.com/Dreamacro/clash/context"
+	icontext "github.com/Dreamacro/clash/context"
 	"github.com/Dreamacro/clash/log"
 	R "github.com/Dreamacro/clash/rule"
 	"github.com/Dreamacro/clash/tunnel/statistic"
@@ -100,8 +101,8 @@ func processUDP() {
 
 func process() {
 	numUDPWorkers := 4
-	if runtime.NumCPU() > numUDPWorkers {
-		numUDPWorkers = runtime.NumCPU()
+	if num := runtime.GOMAXPROCS(0); num > numUDPWorkers {
+		numUDPWorkers = num
 	}
 	for i := 0; i < numUDPWorkers; i++ {
 		go processUDP()
@@ -135,8 +136,10 @@ func preHandleMetadata(metadata *C.Metadata) error {
 		if exist {
 			metadata.Host = host
 			metadata.AddrType = C.AtypDomainName
+			metadata.DNSMode = C.DNSMapping
 			if resolver.FakeIPEnabled() {
 				metadata.DstIP = nil
+				metadata.DNSMode = C.DNSFakeIP
 			} else if node := resolver.DefaultHosts.Search(host); node != nil {
 				// redir-host should lookup the hosts
 				metadata.DstIP = node.Data.(net.IP)
@@ -212,14 +215,16 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 			cond.Broadcast()
 		}()
 
-		ctx := context.NewPacketConnContext(metadata)
-		proxy, rule, err := resolveMetadata(ctx, metadata)
+		pCtx := icontext.NewPacketConnContext(metadata)
+		proxy, rule, err := resolveMetadata(pCtx, metadata)
 		if err != nil {
 			log.Warnln("[UDP] Parse metadata failed: %s", err.Error())
 			return
 		}
 
-		rawPc, err := proxy.DialUDP(metadata)
+		ctx, cancel := context.WithTimeout(context.Background(), C.DefaultUDPTimeout)
+		defer cancel()
+		rawPc, err := proxy.ListenPacketContext(ctx, metadata.Pure())
 		if err != nil {
 			if rule == nil {
 				log.Warnln("[UDP] dial %s to %s error: %s", proxy.Name(), metadata.RemoteAddress(), err.Error())
@@ -228,7 +233,7 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 			}
 			return
 		}
-		ctx.InjectPacketConn(rawPc)
+		pCtx.InjectPacketConn(rawPc)
 		pc := statistic.NewUDPTracker(rawPc, statistic.DefaultManager, metadata, rule)
 
 		switch true {
@@ -249,10 +254,10 @@ func handleUDPConn(packet *inbound.PacketAdapter) {
 	}()
 }
 
-func handleTCPConn(ctx C.ConnContext) {
-	defer ctx.Conn().Close()
+func handleTCPConn(connCtx C.ConnContext) {
+	defer connCtx.Conn().Close()
 
-	metadata := ctx.Metadata()
+	metadata := connCtx.Metadata()
 	if !metadata.Valid() {
 		log.Warnln("[Metadata] not valid: %#v", metadata)
 		return
@@ -263,13 +268,15 @@ func handleTCPConn(ctx C.ConnContext) {
 		return
 	}
 
-	proxy, rule, err := resolveMetadata(ctx, metadata)
+	proxy, rule, err := resolveMetadata(connCtx, metadata)
 	if err != nil {
 		log.Warnln("[Metadata] parse failed: %s", err.Error())
 		return
 	}
 
-	remoteConn, err := proxy.Dial(metadata)
+	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
+	defer cancel()
+	remoteConn, err := proxy.DialContext(ctx, metadata.Pure())
 	if err != nil {
 		if rule == nil {
 			log.Warnln("[TCP] dial %s to %s error: %s", proxy.Name(), metadata.RemoteAddress(), err.Error())
@@ -292,7 +299,7 @@ func handleTCPConn(ctx C.ConnContext) {
 		log.Infoln("[TCP] %s(%s) --> %s doesn't match any rule using DIRECT", metadata.SourceAddress(), metadata.Process, metadata.RemoteAddress())
 	}
 
-	handleSocket(ctx, remoteConn)
+	handleSocket(connCtx, remoteConn)
 }
 
 func shouldResolveIP(rule C.Rule, metadata *C.Metadata) bool {
@@ -352,6 +359,5 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 		}
 	}
 
-	//return proxies["DIRECT"], nil, nil
 	return proxies["REJECT"], nil, nil
 }