Chore: update dependencies

README.md

@@ -13,11 +13,11 @@
     <img src="https://goreportcard.com/badge/github.com/Dreamacro/clash?style=flat-square">
   </a>
   <img src="https://img.shields.io/github/go-mod/go-version/Dreamacro/clash?style=flat-square">
-  <a href="https://github.com/Dreamacro/clash/releases">
-    <img src="https://img.shields.io/github/release/Dreamacro/clash/all.svg?style=flat-square">
+  <a href="https://github.com/yaling888/clash/releases">
+    <img src="https://img.shields.io/github/release/yaling888/clash/all.svg?style=flat-square">
   </a>
-  <a href="https://github.com/Dreamacro/clash/releases/tag/premium">
-    <img src="https://img.shields.io/badge/release-Premium-00b4f0?style=flat-square">
+  <a href="https://github.com/yaling888/clash/releases/tag/plus_pro">
+    <img src="https://img.shields.io/badge/release-Plus Pro-00b4f0?style=flat-square">
   </a>
 </p>
 

adapter/outbound/direct.go

@@ -23,7 +23,7 @@ func (d *Direct) DialContext(ctx context.Context, metadata *C.Metadata, opts ...
 
 	tcpKeepAlive(c)
 
-	if !metadata.DstIP.IsValid() && c.RemoteAddr() != nil {
+	if !metadata.Resolved() && c.RemoteAddr() != nil {
 		if h, _, err := net.SplitHostPort(c.RemoteAddr().String()); err == nil {
 			metadata.DstIP = netip.MustParseAddr(h)
 		}

adapter/outbound/mitm.go

@@ -24,6 +24,7 @@ func (m *Mitm) DialContext(_ context.Context, metadata *C.Metadata, _ ...dialer.
 
 	_ = c.SetKeepAlive(true)
 	_ = c.SetKeepAlivePeriod(60 * time.Second)
+	_ = c.SetLinger(0)
 
 	metadata.Type = C.MITM
 

adapter/outbound/util.go

@@ -15,6 +15,7 @@ func tcpKeepAlive(c net.Conn) {
 	if tcp, ok := c.(*net.TCPConn); ok {
 		_ = tcp.SetKeepAlive(true)
 		_ = tcp.SetKeepAlivePeriod(30 * time.Second)
+		_ = tcp.SetLinger(0)
 	}
 }
 

adapter/outbound/vless.go

@@ -152,7 +152,7 @@ func (v *Vless) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 func (v *Vless) StreamPacketConn(c net.Conn, metadata *C.Metadata) (net.Conn, 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)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return nil, errors.New("can't resolve ip")
 		}
@@ -245,7 +245,7 @@ func (v *Vless) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 	if v.transport != nil && len(opts) == 0 {
 		// vless use stream-oriented udp with a special address, so we needs a net.UDPAddr
 		if !metadata.Resolved() {
-			ip, err := resolver.ResolveIP(metadata.Host)
+			ip, err := resolver.ResolveFirstIP(metadata.Host)
 			if err != nil {
 				return nil, errors.New("can't resolve ip")
 			}

adapter/outbound/vmess.go

@@ -91,17 +91,16 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 		wsOpts := &vmess.WebsocketConfig{
 			Host:                host,
 			Port:                port,
+			Headers:             http.Header{},
 			Path:                v.option.WSOpts.Path,
 			MaxEarlyData:        v.option.WSOpts.MaxEarlyData,
 			EarlyDataHeaderName: v.option.WSOpts.EarlyDataHeaderName,
 		}
 
 		if len(v.option.WSOpts.Headers) != 0 {
-			header := http.Header{}
 			for key, value := range v.option.WSOpts.Headers {
-				header.Add(key, value)
+				wsOpts.Headers.Add(key, value)
 			}
-			wsOpts.Headers = header
 		}
 
 		if v.option.TLS {
@@ -117,7 +116,9 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 				wsOpts.TLSConfig.ServerName = host
 			}
 		} else {
-			wsOpts.Headers.Set("Host", convert.RandHost())
+			if wsOpts.Headers.Get("Host") == "" {
+				wsOpts.Headers.Set("Host", convert.RandHost())
+			}
 			convert.SetUserAgent(wsOpts.Headers)
 		}
 		c, err = vmess.StreamWebsocketConn(c, wsOpts)
@@ -138,9 +139,6 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 			if err != nil {
 				return nil, err
 			}
-		} else {
-			http.Header(v.option.HTTPOpts.Headers).Set("Host", convert.RandHost())
-			convert.SetUserAgent(v.option.HTTPOpts.Headers)
 		}
 
 		host, _, _ := net.SplitHostPort(v.addr)
@@ -205,7 +203,7 @@ func (v *Vmess) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
 func (v *Vmess) StreamPacketConn(c net.Conn, metadata *C.Metadata) (net.Conn, 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)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return c, fmt.Errorf("can't resolve ip: %w", err)
 		}
@@ -257,7 +255,7 @@ func (v *Vmess) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 	if v.transport != nil && len(opts) == 0 {
 		// vmess use stream-oriented udp with a special address, so we needs a net.UDPAddr
 		if !metadata.Resolved() {
-			ip, err := resolver.ResolveIP(metadata.Host)
+			ip, err := resolver.ResolveFirstIP(metadata.Host)
 			if err != nil {
 				return nil, fmt.Errorf("can't resolve ip: %w", err)
 			}

adapter/outboundgroup/common.go

@@ -3,6 +3,8 @@ package outboundgroup
 import (
 	"time"
 
+	"github.com/Dreamacro/clash/adapter"
+	"github.com/Dreamacro/clash/adapter/outbound"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/constant/provider"
 )
@@ -11,14 +13,19 @@ const (
 	defaultGetProxiesDuration = time.Second * 5
 )
 
+var defaultRejectProxy = adapter.NewProxy(outbound.NewReject())
+
 func getProvidersProxies(providers []provider.ProxyProvider, touch bool) []C.Proxy {
 	proxies := []C.Proxy{}
-	for _, provider := range providers {
+	for _, pd := range providers {
 		if touch {
-			proxies = append(proxies, provider.ProxiesWithTouch()...)
+			proxies = append(proxies, pd.ProxiesWithTouch()...)
 		} else {
-			proxies = append(proxies, provider.Proxies()...)
+			proxies = append(proxies, pd.Proxies()...)
 		}
 	}
+	if len(proxies) == 0 {
+		proxies = append(proxies, defaultRejectProxy)
+	}
 	return proxies
 }

adapter/outboundgroup/parser.go

@@ -78,30 +78,18 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 			return nil, errDuplicateProvider
 		}
 
-		// select don't need health check
-		if groupOption.Type == "select" || groupOption.Type == "relay" {
-			hc := provider.NewHealthCheck(ps, "", 0, true)
-			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
-			if err != nil {
-				return nil, err
-			}
-
-			providers = append(providers, pd)
-			providersMap[groupName] = pd
-		} else {
-			if groupOption.URL == "" || groupOption.Interval == 0 {
-				return nil, errMissHealthCheck
-			}
-
-			hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
-			pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
-			if err != nil {
-				return nil, err
-			}
-
-			providers = append(providers, pd)
-			providersMap[groupName] = pd
+		hc, err := newHealthCheck(ps, groupOption)
+		if err != nil {
+			return nil, err
 		}
+
+		pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
+		if err != nil {
+			return nil, err
+		}
+
+		providers = append(providers, pd)
+		providersMap[groupName] = pd
 	}
 
 	if len(groupOption.Use) != 0 {
@@ -109,7 +97,12 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 		if err != nil {
 			return nil, err
 		}
-		providers = append(providers, list...)
+
+		if groupOption.Type == "fallback" {
+			providers = append(list, providers...)
+		} else {
+			providers = append(providers, list...)
+		}
 	}
 
 	var group C.ProxyAdapter
@@ -163,22 +156,18 @@ func getProviders(mapping map[string]types.ProxyProvider, groupOption *GroupComm
 		}
 
 		if filterRegx != nil {
-			var hc *provider.HealthCheck
-			if groupOption.Type == "select" || groupOption.Type == "relay" {
-				hc = provider.NewHealthCheck([]C.Proxy{}, "", 0, true)
-			} else {
-				if groupOption.URL == "" || groupOption.Interval == 0 {
-					return nil, errMissHealthCheck
-				}
-				hc = provider.NewHealthCheck([]C.Proxy{}, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
+			hc, err := newHealthCheck([]C.Proxy{}, groupOption)
+			if err != nil {
+				return nil, err
 			}
 
-			if _, ok = mapping[groupName]; ok {
-				groupName += "->" + p.Name()
+			gName := groupName
+			if _, ok = mapping[gName]; ok {
+				gName = groupName + " -> " + p.Name()
 			}
 
 			pd := p.(*provider.ProxySetProvider)
-			p = provider.NewProxyFilterProvider(groupName, pd, hc, filterRegx)
+			p = provider.NewProxyFilterProvider(gName, pd, hc, filterRegx)
 			pd.RegisterProvidersInUse(p)
 		}
 
@@ -186,3 +175,18 @@ func getProviders(mapping map[string]types.ProxyProvider, groupOption *GroupComm
 	}
 	return ps, nil
 }
+
+func newHealthCheck(ps []C.Proxy, groupOption *GroupCommonOption) (*provider.HealthCheck, error) {
+	var hc *provider.HealthCheck
+
+	// select don't need health check
+	if groupOption.Type == "select" || groupOption.Type == "relay" {
+		hc = provider.NewHealthCheck(ps, "", 0, true)
+	} else {
+		if groupOption.URL == "" || groupOption.Interval == 0 {
+			return nil, errMissHealthCheck
+		}
+		hc = provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
+	}
+	return hc, nil
+}

adapter/outboundgroup/selector.go

@@ -98,7 +98,11 @@ func (s *Selector) selectedProxy(touch bool) C.Proxy {
 }
 
 func NewSelector(option *GroupCommonOption, providers []provider.ProxyProvider) *Selector {
-	selected := providers[0].Proxies()[0].Name()
+	selected := "REJECT"
+	if len(providers) != 0 && len(providers[0].Proxies()) != 0 {
+		selected = providers[0].Proxies()[0].Name()
+	}
+
 	return &Selector{
 		Base: outbound.NewBase(outbound.BaseOption{
 			Name:        option.Name,

adapter/outboundgroup/util.go

@@ -48,5 +48,6 @@ func tcpKeepAlive(c net.Conn) {
 	if tcp, ok := c.(*net.TCPConn); ok {
 		_ = tcp.SetKeepAlive(true)
 		_ = tcp.SetKeepAlivePeriod(30 * time.Second)
+		_ = tcp.SetLinger(0)
 	}
 }

adapter/parser.go

@@ -10,7 +10,7 @@ import (
 
 func ParseProxy(mapping map[string]any, forceCertVerify bool) (C.Proxy, error) {
 	decoder := structure.NewDecoder(structure.Option{TagName: "proxy", WeaklyTypedInput: true})
-	proxyType, existType := mapping["type"].(string)
+	proxyType, existType := mapping["type"]
 	if !existType {
 		return nil, fmt.Errorf("missing type")
 	}
@@ -19,7 +19,7 @@ func ParseProxy(mapping map[string]any, forceCertVerify bool) (C.Proxy, error) {
 		proxy C.ProxyAdapter
 		err   error
 	)
-	switch proxyType {
+	switch proxyType.(string) {
 	case "ss":
 		ssOption := &outbound.ShadowSocksOption{}
 		err = decoder.Decode(mapping, ssOption)
@@ -57,8 +57,9 @@ func ParseProxy(mapping map[string]any, forceCertVerify bool) (C.Proxy, error) {
 	case "vmess":
 		vmessOption := &outbound.VmessOption{
 			HTTPOpts: outbound.HTTPOptions{
-				Method: "GET",
-				Path:   []string{"/"},
+				Method:  "GET",
+				Path:    []string{"/"},
+				Headers: make(map[string][]string),
 			},
 		}
 		err = decoder.Decode(mapping, vmessOption)

adapter/provider/healthcheck.go

@@ -25,10 +25,16 @@ type HealthCheck struct {
 	interval  uint
 	lazy      bool
 	lastTouch *atomic.Int64
+	running   *atomic.Bool
 	done      chan struct{}
 }
 
 func (hc *HealthCheck) process() {
+	if hc.running.Load() {
+		return
+	}
+	hc.running.Store(true)
+
 	ticker := time.NewTicker(time.Duration(hc.interval) * time.Second)
 
 	go func() {
@@ -84,6 +90,10 @@ func (hc *HealthCheck) check() {
 }
 
 func (hc *HealthCheck) close() {
+	if !hc.running.Load() {
+		return
+	}
+	hc.running.Store(false)
 	hc.done <- struct{}{}
 }
 
@@ -94,6 +104,7 @@ func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool) *He
 		interval:  interval,
 		lazy:      lazy,
 		lastTouch: atomic.NewInt64(0),
+		running:   atomic.NewBool(false),
 		done:      make(chan struct{}, 1),
 	}
 }

adapter/provider/provider.go

@@ -234,7 +234,9 @@ func (pf *proxyFilterProvider) HealthCheck() {
 }
 
 func (pf *proxyFilterProvider) Update() error {
-	var proxies []C.Proxy
+	pf.healthCheck.close()
+
+	proxies := []C.Proxy{}
 	if pf.filter != nil {
 		for _, proxy := range pf.psd.Proxies() {
 			if !pf.filter.MatchString(proxy.Name()) {
@@ -248,6 +250,10 @@ func (pf *proxyFilterProvider) Update() error {
 
 	pf.proxies = proxies
 	pf.healthCheck.setProxy(proxies)
+
+	if len(proxies) != 0 && pf.healthCheck.auto() {
+		go pf.healthCheck.process()
+	}
 	return nil
 }
 
@@ -286,10 +292,6 @@ func NewProxyFilterProvider(name string, psd *ProxySetProvider, hc *HealthCheck,
 
 	_ = pd.Update()
 
-	if hc.auto() {
-		go hc.process()
-	}
-
 	wrapper := &ProxyFilterProvider{pd}
 	runtime.SetFinalizer(wrapper, stopProxyFilterProvider)
 	return wrapper

adapter/provider/vehicle.go

@@ -11,7 +11,6 @@ import (
 
 	"github.com/Dreamacro/clash/common/convert"
 	"github.com/Dreamacro/clash/component/dialer"
-	C "github.com/Dreamacro/clash/constant"
 	types "github.com/Dreamacro/clash/constant/provider"
 )
 
@@ -82,13 +81,11 @@ func (h *HTTPVehicle) Read() ([]byte, error) {
 		IdleConnTimeout:       90 * time.Second,
 		TLSHandshakeTimeout:   10 * time.Second,
 		ExpectContinueTimeout: 1 * time.Second,
-		DialContext: func(ctx context.Context, network, address string) (conn net.Conn, err error) {
-			conn, err = dialer.DialContext(ctx, network, address) // with direct
-			if err != nil {
-				// fallback to tun if tun enabled
-				conn, err = (&net.Dialer{Timeout: C.DefaultTCPTimeout}).Dial(network, address)
+		DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
+			if req.URL.Scheme == "https" {
+				return (&net.Dialer{}).DialContext(ctx, network, address) // forward to tun if tun enabled
 			}
-			return
+			return dialer.DialContext(ctx, network, address, dialer.WithDirect()) // with direct
 		},
 	}
 

common/convert/converter.go

@@ -21,21 +21,24 @@ func DecodeBase64(buf []byte) ([]byte, error) {
 	return dBuf[:n], nil
 }
 
-// DecodeBase64StringToString decode base64 string to string
-func DecodeBase64StringToString(s string) (string, error) {
-	dBuf, err := enc.DecodeString(s)
+func DecodeRawBase64(buf []byte) ([]byte, error) {
+	dBuf := make([]byte, base64.RawStdEncoding.DecodedLen(len(buf)))
+	n, err := base64.RawStdEncoding.Decode(dBuf, buf)
 	if err != nil {
-		return "", err
+		return nil, err
 	}
 
-	return string(dBuf), nil
+	return dBuf[:n], nil
 }
 
 // ConvertsV2Ray convert V2Ray subscribe proxies data to clash proxies config
 func ConvertsV2Ray(buf []byte) ([]map[string]any, error) {
 	data, err := DecodeBase64(buf)
 	if err != nil {
-		data = buf
+		data, err = DecodeRawBase64(buf)
+		if err != nil {
+			data = buf
+		}
 	}
 
 	arr := strings.Split(string(data), "\n")

common/net/relay.go

@@ -4,8 +4,6 @@ import (
 	"io"
 	"net"
 	"time"
-
-	"github.com/Dreamacro/clash/common/pool"
 )
 
 // Relay copies between left and right bidirectionally.
@@ -16,18 +14,14 @@ func Relay(leftConn, rightConn net.Conn) {
 	tcpKeepAlive(rightConn)
 
 	go func() {
-		buf := pool.Get(pool.RelayBufferSize)
 		// Wrapping to avoid using *net.TCPConn.(ReadFrom)
 		// See also https://github.com/Dreamacro/clash/pull/1209
-		_, err := io.CopyBuffer(WriteOnlyWriter{Writer: leftConn}, ReadOnlyReader{Reader: rightConn}, buf)
-		_ = pool.Put(buf)
+		_, err := io.Copy(WriteOnlyWriter{Writer: leftConn}, ReadOnlyReader{Reader: rightConn})
 		_ = leftConn.SetReadDeadline(time.Now())
 		ch <- err
 	}()
 
-	buf := pool.Get(pool.RelayBufferSize)
-	_, _ = io.CopyBuffer(WriteOnlyWriter{Writer: rightConn}, ReadOnlyReader{Reader: leftConn}, buf)
-	_ = pool.Put(buf)
+	_, _ = io.Copy(WriteOnlyWriter{Writer: rightConn}, ReadOnlyReader{Reader: leftConn})
 	_ = rightConn.SetReadDeadline(time.Now())
 	<-ch
 }

component/process/process.go

@@ -28,6 +28,9 @@ func ShouldFindProcess(metadata *C.Metadata) bool {
 	if metadata.Process != "" {
 		return false
 	}
+	if metadata.SrcIP.IsUnspecified() {
+		return true
+	}
 	for _, ip := range localIPs {
 		if ip == metadata.SrcIP {
 			return true
@@ -41,7 +44,7 @@ func AppendLocalIPs(ip ...netip.Addr) {
 }
 
 func getLocalIPs() []netip.Addr {
-	ips := []netip.Addr{netip.IPv4Unspecified(), netip.IPv6Unspecified()}
+	var ips []netip.Addr
 
 	netInterfaces, err := net.Interfaces()
 	if err != nil {

component/resolver/resolver.go

@@ -37,17 +37,17 @@ var (
 )
 
 type Resolver interface {
-	ResolveIP(host string) (ip netip.Addr, err error)
-	ResolveIPv4(host string) (ip netip.Addr, err error)
-	ResolveIPv6(host string) (ip netip.Addr, err error)
+	ResolveIP(host string, random bool) (ip netip.Addr, err error)
+	ResolveIPv4(host string, random bool) (ip netip.Addr, err error)
+	ResolveIPv6(host string, random bool) (ip netip.Addr, err error)
 }
 
 // ResolveIPv4 with a host, return ipv4
 func ResolveIPv4(host string) (netip.Addr, error) {
-	return ResolveIPv4WithResolver(host, DefaultResolver)
+	return resolveIPv4(host, true)
 }
 
-func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPv4WithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if node := DefaultHosts.Search(host); node != nil {
 		if ip := node.Data; ip.Is4() {
 			return ip, nil
@@ -56,6 +56,7 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 
 	ip, err := netip.ParseAddr(host)
 	if err == nil {
+		ip = ip.Unmap()
 		if ip.Is4() {
 			return ip, nil
 		}
@@ -63,7 +64,7 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 	}
 
 	if r != nil {
-		return r.ResolveIPv4(host)
+		return r.ResolveIPv4(host, random)
 	}
 
 	if DefaultResolver == nil {
@@ -76,7 +77,11 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 			return netip.Addr{}, ErrIPNotFound
 		}
 
-		ip := ipAddrs[rand.Intn(len(ipAddrs))].To4()
+		index := 0
+		if random {
+			index = rand.Intn(len(ipAddrs))
+		}
+		ip := ipAddrs[index].To4()
 		if ip == nil {
 			return netip.Addr{}, ErrIPVersion
 		}
@@ -89,10 +94,10 @@ func ResolveIPv4WithResolver(host string, r Resolver) (netip.Addr, error) {
 
 // ResolveIPv6 with a host, return ipv6
 func ResolveIPv6(host string) (netip.Addr, error) {
-	return ResolveIPv6WithResolver(host, DefaultResolver)
+	return ResolveIPv6WithResolver(host, DefaultResolver, true)
 }
 
-func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPv6WithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if DisableIPv6 {
 		return netip.Addr{}, ErrIPv6Disabled
 	}
@@ -112,7 +117,7 @@ func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
 	}
 
 	if r != nil {
-		return r.ResolveIPv6(host)
+		return r.ResolveIPv6(host, random)
 	}
 
 	if DefaultResolver == nil {
@@ -125,25 +130,29 @@ func ResolveIPv6WithResolver(host string, r Resolver) (netip.Addr, error) {
 			return netip.Addr{}, ErrIPNotFound
 		}
 
-		return netip.AddrFrom16(*(*[16]byte)(ipAddrs[rand.Intn(len(ipAddrs))])), nil
+		index := 0
+		if random {
+			index = rand.Intn(len(ipAddrs))
+		}
+		return netip.AddrFrom16(*(*[16]byte)(ipAddrs[index])), nil
 	}
 
 	return netip.Addr{}, ErrIPNotFound
 }
 
 // ResolveIPWithResolver same as ResolveIP, but with a resolver
-func ResolveIPWithResolver(host string, r Resolver) (netip.Addr, error) {
+func ResolveIPWithResolver(host string, r Resolver, random bool) (netip.Addr, error) {
 	if node := DefaultHosts.Search(host); node != nil {
 		return node.Data, nil
 	}
 
 	if r != nil {
 		if DisableIPv6 {
-			return r.ResolveIPv4(host)
+			return r.ResolveIPv4(host, random)
 		}
-		return r.ResolveIP(host)
+		return r.ResolveIP(host, random)
 	} else if DisableIPv6 {
-		return ResolveIPv4(host)
+		return resolveIPv4(host, random)
 	}
 
 	ip, err := netip.ParseAddr(host)
@@ -165,13 +174,18 @@ func ResolveIPWithResolver(host string, r Resolver) (netip.Addr, error) {
 
 // ResolveIP with a host, return ip
 func ResolveIP(host string) (netip.Addr, error) {
-	return ResolveIPWithResolver(host, DefaultResolver)
+	return resolveIP(host, true)
+}
+
+// ResolveFirstIP with a host, return ip
+func ResolveFirstIP(host string) (netip.Addr, error) {
+	return resolveIP(host, false)
 }
 
 // ResolveIPv4ProxyServerHost proxies server host only
 func ResolveIPv4ProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPv4WithResolver(host, ProxyServerHostResolver)
+		return ResolveIPv4WithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIPv4(host)
 }
@@ -179,7 +193,7 @@ func ResolveIPv4ProxyServerHost(host string) (netip.Addr, error) {
 // ResolveIPv6ProxyServerHost proxies server host only
 func ResolveIPv6ProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPv6WithResolver(host, ProxyServerHostResolver)
+		return ResolveIPv6WithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIPv6(host)
 }
@@ -187,7 +201,15 @@ func ResolveIPv6ProxyServerHost(host string) (netip.Addr, error) {
 // ResolveProxyServerHost proxies server host only
 func ResolveProxyServerHost(host string) (netip.Addr, error) {
 	if ProxyServerHostResolver != nil {
-		return ResolveIPWithResolver(host, ProxyServerHostResolver)
+		return ResolveIPWithResolver(host, ProxyServerHostResolver, true)
 	}
 	return ResolveIP(host)
 }
+
+func resolveIP(host string, random bool) (netip.Addr, error) {
+	return ResolveIPWithResolver(host, DefaultResolver, random)
+}
+
+func resolveIPv4(host string, random bool) (netip.Addr, error) {
+	return ResolveIPv4WithResolver(host, DefaultResolver, random)
+}

config/config.go

@@ -415,11 +415,11 @@ func parseProxies(cfg *RawConfig) (proxies map[string]C.Proxy, providersMap map[
 
 	// keep the original order of ProxyGroups in config file
 	for idx, mapping := range groupsConfig {
-		groupName, existName := mapping["name"].(string)
+		groupName, existName := mapping["name"]
 		if !existName {
 			return nil, nil, fmt.Errorf("proxy group %d: missing name", idx)
 		}
-		proxyList = append(proxyList, groupName)
+		proxyList = append(proxyList, groupName.(string))
 	}
 
 	// check if any loop exists and sort the ProxyGroups

dns/client.go

@@ -36,7 +36,7 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (*D.Msg, error)
 		if c.r == nil {
 			return nil, fmt.Errorf("dns %s not a valid ip", c.host)
 		} else {
-			if ip, err = resolver.ResolveIPWithResolver(c.host, c.r); err != nil {
+			if ip, err = resolver.ResolveIPWithResolver(c.host, c.r, true); err != nil {
 				return nil, fmt.Errorf("use default dns resolve failed: %w", err)
 			}
 			c.host = ip.String()

dns/doh.go

@@ -94,7 +94,7 @@ func newDoHClient(url string, r *Resolver, proxyAdapter string) *dohClient {
 					return nil, err
 				}
 
-				ip, err := resolver.ResolveIPWithResolver(host, r)
+				ip, err := resolver.ResolveIPWithResolver(host, r, true)
 				if err != nil {
 					return nil, err
 				}

dns/resolver.go

@@ -21,6 +21,8 @@ import (
 	"golang.org/x/sync/singleflight"
 )
 
+var _ resolver.Resolver = (*Resolver)(nil)
+
 type dnsClient interface {
 	Exchange(m *D.Msg) (msg *D.Msg, err error)
 	ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error)
@@ -45,18 +47,18 @@ type Resolver struct {
 }
 
 // ResolveIP request with TypeA and TypeAAAA, priority return TypeA
-func (r *Resolver) ResolveIP(host string) (ip netip.Addr, err error) {
+func (r *Resolver) ResolveIP(host string, random bool) (ip netip.Addr, err error) {
 	ch := make(chan netip.Addr, 1)
 	go func() {
 		defer close(ch)
-		ip, err := r.resolveIP(host, D.TypeAAAA)
+		ip, err := r.resolveIP(host, D.TypeAAAA, random)
 		if err != nil {
 			return
 		}
 		ch <- ip
 	}()
 
-	ip, err = r.resolveIP(host, D.TypeA)
+	ip, err = r.resolveIP(host, D.TypeA, random)
 	if err == nil {
 		return
 	}
@@ -70,13 +72,13 @@ func (r *Resolver) ResolveIP(host string) (ip netip.Addr, err error) {
 }
 
 // ResolveIPv4 request with TypeA
-func (r *Resolver) ResolveIPv4(host string) (ip netip.Addr, err error) {
-	return r.resolveIP(host, D.TypeA)
+func (r *Resolver) ResolveIPv4(host string, random bool) (ip netip.Addr, err error) {
+	return r.resolveIP(host, D.TypeA, random)
 }
 
 // ResolveIPv6 request with TypeAAAA
-func (r *Resolver) ResolveIPv6(host string) (ip netip.Addr, err error) {
-	return r.resolveIP(host, D.TypeAAAA)
+func (r *Resolver) ResolveIPv6(host string, random bool) (ip netip.Addr, err error) {
+	return r.resolveIP(host, D.TypeAAAA, random)
 }
 
 func (r *Resolver) shouldIPFallback(ip netip.Addr) bool {
@@ -255,9 +257,10 @@ func (r *Resolver) ipExchange(ctx context.Context, m *D.Msg) (msg *D.Msg, err er
 	return
 }
 
-func (r *Resolver) resolveIP(host string, dnsType uint16) (ip netip.Addr, err error) {
+func (r *Resolver) resolveIP(host string, dnsType uint16, random bool) (ip netip.Addr, err error) {
 	ip, err = netip.ParseAddr(host)
 	if err == nil {
+		ip = ip.Unmap()
 		isIPv4 := ip.Is4()
 		if dnsType == D.TypeAAAA && !isIPv4 {
 			return ip, nil
@@ -282,7 +285,12 @@ func (r *Resolver) resolveIP(host string, dnsType uint16) (ip netip.Addr, err er
 		return netip.Addr{}, resolver.ErrIPNotFound
 	}
 
-	ip = ips[rand.Intn(ipLength)]
+	index := 0
+	if random {
+		index = rand.Intn(ipLength)
+	}
+
+	ip = ips[index]
 	return
 }
 

go.mod

@@ -9,26 +9,26 @@ require (
 	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/gorilla/websocket v1.5.0
 	github.com/insomniacslk/dhcp v0.0.0-20220504074936-1ca156eafb9f
-	github.com/miekg/dns v1.1.49
+	github.com/miekg/dns v1.1.50
 	github.com/oschwald/geoip2-golang v1.7.0
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.7.2
 	github.com/xtls/go v0.0.0-20210920065950-d4af136d3672
 	go.etcd.io/bbolt v1.3.6
 	go.uber.org/atomic v1.9.0
 	go.uber.org/automaxprocs v1.5.1
-	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e
-	golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f
-	golang.org/x/net v0.0.0-20220531201128-c960675eff93
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d
+	golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d
+	golang.org/x/net v0.0.0-20220622184535-263ec571b305
 	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a
+	golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664
 	golang.org/x/text v0.3.8-0.20220124021120-d1c84af989ab
-	golang.org/x/time v0.0.0-20220411224347-583f2d630306
+	golang.org/x/time v0.0.0-20220609170525-579cf78fd858
 	golang.zx2c4.com/wireguard v0.0.0-20220601130007-6a08d81f6bc4
 	golang.zx2c4.com/wireguard/windows v0.5.4-0.20220328111914-004c22c5647e
 	google.golang.org/protobuf v1.28.0
 	gopkg.in/yaml.v3 v3.0.1
-	gvisor.dev/gvisor v0.0.0-20220601233344-46e478629075
+	gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069
 )
 
 require (

go.sum

@@ -20,7 +20,7 @@ github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
 github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
@@ -45,8 +45,8 @@ github.com/mdlayher/netlink v1.1.0/go.mod h1:H4WCitaheIsdF9yOYu8CFmCgQthAPIWZmcK
 github.com/mdlayher/netlink v1.1.1/go.mod h1:WTYpFb/WTvlRJAyKhZL5/uy69TDDpHHu2VZmb2XgV7o=
 github.com/mdlayher/raw v0.0.0-20190606142536-fef19f00fc18/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
 github.com/mdlayher/raw v0.0.0-20191009151244-50f2db8cc065/go.mod h1:7EpbotpCmVZcu+KCX4g9WaRNuu11uyhiW7+Le1dKawg=
-github.com/miekg/dns v1.1.49 h1:qe0mQU3Z/XpFeE+AEBo2rqaS1IPBJ3anmqZ4XiZJVG8=
-github.com/miekg/dns v1.1.49/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
+github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
+github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
 github.com/oschwald/geoip2-golang v1.7.0 h1:JW1r5AKi+vv2ujSxjKthySK3jo8w8oKWPyXsw+Qs/S8=
 github.com/oschwald/geoip2-golang v1.7.0/go.mod h1:mdI/C7iK7NVMcIDDtf4bCKMJ7r0o7UwGeCo9eiitCMQ=
 github.com/oschwald/maxminddb-golang v1.9.0 h1:tIk4nv6VT9OiPyrnDAfJS1s1xKDQMZOsGojab6EjC1Y=
@@ -62,8 +62,8 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.2 h1:4jaiDzPyXQvSd7D0EjG45355tLlV3VOECpq10pLC+8s=
+github.com/stretchr/testify v1.7.2/go.mod h1:R6va5+xMeoiuVRoj+gSkQ7d3FALtqAAGI1FQKckRals=
 github.com/u-root/uio v0.0.0-20210528114334-82958018845c h1:BFvcl34IGnw8yvJi8hlqLFo9EshRInwWBs2M5fGWzQA=
 github.com/u-root/uio v0.0.0-20210528114334-82958018845c/go.mod h1:LpEX5FO/cB+WF4TYGY1V5qktpaZLkKkSegbr0V4eYXA=
 github.com/xtls/go v0.0.0-20210920065950-d4af136d3672 h1:4mkzGhKqt3JO1BWYjtD3iRFyAx4ow67hmSqOcGjuxqQ=
@@ -78,10 +78,10 @@ go.uber.org/automaxprocs v1.5.1/go.mod h1:BF4eumQw0P9GtnuxxovUd06vwm1o18oMzFtK66
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e h1:T8NU3HyQ8ClP4SEE+KbFlg6n0NhuTsN4MyznaarGsZM=
-golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f h1:KK6mxegmt5hGJRcAnEDjSNLxIRhZxDcgwMbcO/lMCRM=
-golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f/go.mod h1:yh0Ynu2b5ZUe3MQfp2nM0ecK7wsgouWTDN0FNeJuIys=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d h1:sK3txAijHtOK88l68nt020reeT1ZdKLIYetKl95FzVY=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d h1:vtUKgx8dahOomfFzLREU8nSv25YHnTgLBn4rDnWZdU0=
+golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 h1:kQgndtyPBW/JIYERgdxfwMYh3AVStj88WQTlNDi2a+o=
 golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
@@ -97,8 +97,8 @@ golang.org/x/net v0.0.0-20201010224723-4f7140c49acb/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220531201128-c960675eff93 h1:MYimHLfoXEpOhqd/zgoA/uoXzHB86AEky4LAx5ij9xA=
-golang.org/x/net v0.0.0-20220531201128-c960675eff93/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.0.0-20220622184535-263ec571b305 h1:dAgbJ2SP4jD6XYfMNLVj0BF21jo2PjChrtGaAvF5M3I=
+golang.org/x/net v0.0.0-20220622184535-263ec571b305/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
@@ -123,16 +123,16 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210525143221-35b2ab0089ea/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664 h1:wEZYwx+kK+KlZ0hpvP2Ls1Xr4+RWnlzGFwPP0aiDjIU=
+golang.org/x/sys v0.0.0-20220622161953-175b2fd9d664/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.8-0.20220124021120-d1c84af989ab h1:eHo2TTVBaAPw9lDGK2Gb9GyPMXT6g7O63W6sx3ylbzU=
 golang.org/x/text v0.3.8-0.20220124021120-d1c84af989ab/go.mod h1:EFNZuWvGYxIRUEX+K8UmCFwYmZjqcrnq15ZuVldZkZ0=
-golang.org/x/time v0.0.0-20220411224347-583f2d630306 h1:+gHMid33q6pen7kv9xvT+JRinntgeXO2AeZVd0AWD3w=
-golang.org/x/time v0.0.0-20220411224347-583f2d630306/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20220609170525-579cf78fd858 h1:Dpdu/EMxGMFgq0CeYMh4fazTD2vtlZRYE7wyynxJb9U=
+golang.org/x/time v0.0.0-20220609170525-579cf78fd858/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -158,5 +158,5 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gvisor.dev/gvisor v0.0.0-20220601233344-46e478629075 h1:ucwwit0X39HmMQ1iSeNCIXw4g/B8bi+O6TSxxDbPs9E=
-gvisor.dev/gvisor v0.0.0-20220601233344-46e478629075/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
+gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069 h1:Ly12hwbYd06NuYM2/nssGPgQ9ZVw7xaNs2lc087VW1w=
+gvisor.dev/gvisor v0.0.0-20220616232550-d004a30ec069/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=

hub/executor/executor.go

@@ -141,6 +141,11 @@ func updateDNS(c *config.DNS, t config.Tun) {
 		ProxyServer: c.ProxyServerNameserver,
 	}
 
+	// deprecated warnning
+	if cfg.EnhancedMode == C.DNSMapping {
+		log.Warnln("[DNS] %s is deprecated, please use %s instead", cfg.EnhancedMode.String(), C.DNSFakeIP.String())
+	}
+
 	r := dns.NewResolver(cfg)
 	pr := dns.NewProxyServerHostResolver(r)
 	m := dns.NewEnhancer(cfg)

listener/tproxy/packet.go

@@ -2,12 +2,13 @@ package tproxy
 
 import (
 	"net"
+	"net/netip"
 
 	"github.com/Dreamacro/clash/common/pool"
 )
 
 type packet struct {
-	lAddr *net.UDPAddr
+	lAddr netip.AddrPort
 	buf   []byte
 }
 
@@ -17,21 +18,21 @@ func (c *packet) Data() []byte {
 
 // WriteBack opens a new socket binding `addr` to write UDP packet back
 func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
-	tc, err := dialUDP("udp", addr.(*net.UDPAddr), c.lAddr)
+	tc, err := dialUDP("udp", addr.(*net.UDPAddr).AddrPort(), c.lAddr)
 	if err != nil {
 		n = 0
 		return
 	}
 	n, err = tc.Write(b)
-	tc.Close()
+	_ = tc.Close()
 	return
 }
 
 // LocalAddr returns the source IP/Port of UDP Packet
 func (c *packet) LocalAddr() net.Addr {
-	return c.lAddr
+	return net.UDPAddrFromAddrPort(c.lAddr)
 }
 
 func (c *packet) Drop() {
-	pool.Put(c.buf)
+	_ = pool.Put(c.buf)
 }

listener/tproxy/tcp.go

@@ -32,7 +32,7 @@ func (l *Listener) Close() error {
 
 func (l *Listener) handleTProxy(conn net.Conn, in chan<- C.ConnContext) {
 	target := socks5.ParseAddrToSocksAddr(conn.LocalAddr())
-	conn.(*net.TCPConn).SetKeepAlive(true)
+	_ = conn.(*net.TCPConn).SetKeepAlive(true)
 	in <- inbound.NewSocket(target, conn, C.TPROXY)
 }
 

listener/tproxy/udp.go

@@ -2,6 +2,7 @@ package tproxy
 
 import (
 	"net"
+	"net/netip"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
 	"github.com/Dreamacro/clash/common/pool"
@@ -58,28 +59,28 @@ func NewUDP(addr string, in chan<- *inbound.PacketAdapter) (*UDPListener, error)
 		oob := make([]byte, 1024)
 		for {
 			buf := pool.Get(pool.UDPBufferSize)
-			n, oobn, _, lAddr, err := c.ReadMsgUDP(buf, oob)
+			n, oobn, _, lAddr, err := c.ReadMsgUDPAddrPort(buf, oob)
 			if err != nil {
-				pool.Put(buf)
+				_ = pool.Put(buf)
 				if rl.closed {
 					break
 				}
 				continue
 			}
 
-			rAddr, err := getOrigDst(oob, oobn)
+			rAddr, err := getOrigDst(oob[:oobn])
 			if err != nil {
 				continue
 			}
-			handlePacketConn(l, in, buf[:n], lAddr, rAddr)
+			handlePacketConn(in, buf[:n], lAddr, rAddr)
 		}
 	}()
 
 	return rl, nil
 }
 
-func handlePacketConn(pc net.PacketConn, in chan<- *inbound.PacketAdapter, buf []byte, lAddr *net.UDPAddr, rAddr *net.UDPAddr) {
-	target := socks5.ParseAddrToSocksAddr(rAddr)
+func handlePacketConn(in chan<- *inbound.PacketAdapter, buf []byte, lAddr, rAddr netip.AddrPort) {
+	target := socks5.AddrFromStdAddrPort(rAddr)
 	pkt := &packet{
 		lAddr: lAddr,
 		buf:   buf,

listener/tproxy/udp_linux.go

@@ -3,13 +3,14 @@
 package tproxy
 
 import (
-	"encoding/binary"
-	"errors"
 	"fmt"
 	"net"
+	"net/netip"
 	"os"
 	"strconv"
 	"syscall"
+
+	"golang.org/x/sys/unix"
 )
 
 const (
@@ -19,7 +20,7 @@ const (
 
 // dialUDP acts like net.DialUDP for transparent proxy.
 // It binds to a non-local address(`lAddr`).
-func dialUDP(network string, lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPConn, error) {
+func dialUDP(network string, lAddr, rAddr netip.AddrPort) (uc *net.UDPConn, err error) {
 	rSockAddr, err := udpAddrToSockAddr(rAddr)
 	if err != nil {
 		return nil, err
@@ -35,23 +36,25 @@ func dialUDP(network string, lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPCo
 		return nil, err
 	}
 
+	defer func() {
+		if err != nil {
+			syscall.Close(fd)
+		}
+	}()
+
 	if err = syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1); err != nil {
-		syscall.Close(fd)
 		return nil, err
 	}
 
 	if err = syscall.SetsockoptInt(fd, syscall.SOL_IP, syscall.IP_TRANSPARENT, 1); err != nil {
-		syscall.Close(fd)
 		return nil, err
 	}
 
 	if err = syscall.Bind(fd, lSockAddr); err != nil {
-		syscall.Close(fd)
 		return nil, err
 	}
 
 	if err = syscall.Connect(fd, rSockAddr); err != nil {
-		syscall.Close(fd)
 		return nil, err
 	}
 
@@ -60,35 +63,26 @@ func dialUDP(network string, lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPCo
 
 	c, err := net.FileConn(fdFile)
 	if err != nil {
-		syscall.Close(fd)
 		return nil, err
 	}
 
 	return c.(*net.UDPConn), nil
 }
 
-func udpAddrToSockAddr(addr *net.UDPAddr) (syscall.Sockaddr, error) {
-	switch {
-	case addr.IP.To4() != nil:
-		ip := [4]byte{}
-		copy(ip[:], addr.IP.To4())
-
-		return &syscall.SockaddrInet4{Addr: ip, Port: addr.Port}, nil
-
-	default:
-		ip := [16]byte{}
-		copy(ip[:], addr.IP.To16())
-
-		zoneID, err := strconv.ParseUint(addr.Zone, 10, 32)
-		if err != nil {
-			zoneID = 0
-		}
-
-		return &syscall.SockaddrInet6{Addr: ip, Port: addr.Port, ZoneId: uint32(zoneID)}, nil
+func udpAddrToSockAddr(addr netip.AddrPort) (syscall.Sockaddr, error) {
+	if addr.Addr().Is4() {
+		return &syscall.SockaddrInet4{Addr: addr.Addr().As4(), Port: int(addr.Port())}, nil
 	}
+
+	zoneID, err := strconv.ParseUint(addr.Addr().Zone(), 10, 32)
+	if err != nil {
+		zoneID = 0
+	}
+
+	return &syscall.SockaddrInet6{Addr: addr.Addr().As16(), Port: int(addr.Port()), ZoneId: uint32(zoneID)}, nil
 }
 
-func udpAddrFamily(net string, lAddr, rAddr *net.UDPAddr) int {
+func udpAddrFamily(net string, lAddr, rAddr netip.AddrPort) int {
 	switch net[len(net)-1] {
 	case '4':
 		return syscall.AF_INET
@@ -96,29 +90,35 @@ func udpAddrFamily(net string, lAddr, rAddr *net.UDPAddr) int {
 		return syscall.AF_INET6
 	}
 
-	if (lAddr == nil || lAddr.IP.To4() != nil) && (rAddr == nil || lAddr.IP.To4() != nil) {
+	if lAddr.Addr().Is4() && rAddr.Addr().Is4() {
 		return syscall.AF_INET
 	}
 	return syscall.AF_INET6
 }
 
-func getOrigDst(oob []byte, oobn int) (*net.UDPAddr, error) {
-	msgs, err := syscall.ParseSocketControlMessage(oob[:oobn])
+func getOrigDst(oob []byte) (netip.AddrPort, error) {
+	// oob contains socket control messages which we need to parse.
+	scms, err := unix.ParseSocketControlMessage(oob)
 	if err != nil {
-		return nil, err
+		return netip.AddrPort{}, fmt.Errorf("parse control message: %w", err)
 	}
 
-	for _, msg := range msgs {
-		if msg.Header.Level == syscall.SOL_IP && msg.Header.Type == syscall.IP_RECVORIGDSTADDR {
-			ip := net.IP(msg.Data[4:8])
-			port := binary.BigEndian.Uint16(msg.Data[2:4])
-			return &net.UDPAddr{IP: ip, Port: int(port)}, nil
-		} else if msg.Header.Level == syscall.SOL_IPV6 && msg.Header.Type == IPV6_RECVORIGDSTADDR {
-			ip := net.IP(msg.Data[8:24])
-			port := binary.BigEndian.Uint16(msg.Data[2:4])
-			return &net.UDPAddr{IP: ip, Port: int(port)}, nil
-		}
+	// retrieve the destination address from the SCM.
+	sa, err := unix.ParseOrigDstAddr(&scms[0])
+	if err != nil {
+		return netip.AddrPort{}, fmt.Errorf("retrieve destination: %w", err)
 	}
 
-	return nil, errors.New("cannot find origDst")
+	// encode the destination address into a cmsg.
+	var rAddr netip.AddrPort
+	switch v := sa.(type) {
+	case *unix.SockaddrInet4:
+		rAddr = netip.AddrPortFrom(netip.AddrFrom4(v.Addr), uint16(v.Port))
+	case *unix.SockaddrInet6:
+		rAddr = netip.AddrPortFrom(netip.AddrFrom16(v.Addr), uint16(v.Port))
+	default:
+		return netip.AddrPort{}, fmt.Errorf("unsupported address type: %T", v)
+	}
+
+	return rAddr, nil
 }

listener/tproxy/udp_other.go

@@ -5,12 +5,13 @@ package tproxy
 import (
 	"errors"
 	"net"
+	"net/netip"
 )
 
-func getOrigDst(oob []byte, oobn int) (*net.UDPAddr, error) {
-	return nil, errors.New("UDP redir not supported on current platform")
+func getOrigDst(oob []byte) (netip.AddrPort, error) {
+	return netip.AddrPort{}, errors.New("UDP redir not supported on current platform")
 }
 
-func dialUDP(network string, lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPConn, error) {
+func dialUDP(network string, lAddr, rAddr netip.AddrPort) (*net.UDPConn, error) {
 	return nil, errors.New("UDP redir not supported on current platform")
 }

listener/tun/device/iobased/endpoint.go

@@ -8,8 +8,10 @@ import (
 	"io"
 	"sync"
 
+	"github.com/Dreamacro/clash/common/pool"
+
+	"gvisor.dev/gvisor/pkg/buffer"
 	"gvisor.dev/gvisor/pkg/tcpip"
-	"gvisor.dev/gvisor/pkg/tcpip/buffer"
 	"gvisor.dev/gvisor/pkg/tcpip/header"
 	"gvisor.dev/gvisor/pkg/tcpip/link/channel"
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
@@ -93,23 +95,29 @@ func (e *Endpoint) dispatchLoop(cancel context.CancelFunc) {
 
 	mtu := int(e.mtu)
 	for {
-		data := make([]byte, mtu)
+		data := pool.Get(mtu)
 
 		n, err := e.rw.Read(data)
 		if err != nil {
+			_ = pool.Put(data)
 			break
 		}
 
 		if n == 0 || n > mtu {
+			_ = pool.Put(data)
 			continue
 		}
 
 		if !e.IsAttached() {
+			_ = pool.Put(data)
 			continue /* unattached, drop packet */
 		}
 
 		pkt := stack.NewPacketBuffer(stack.PacketBufferOptions{
-			Data: buffer.View(data[:n]).ToVectorisedView(),
+			Payload: buffer.NewWithData(data[:n]),
+			OnRelease: func() {
+				_ = pool.Put(data)
+			},
 		})
 
 		switch header.IPVersion(data) {
@@ -117,6 +125,8 @@ func (e *Endpoint) dispatchLoop(cancel context.CancelFunc) {
 			e.InjectInbound(header.IPv4ProtocolNumber, pkt)
 		case header.IPv6Version:
 			e.InjectInbound(header.IPv6ProtocolNumber, pkt)
+		default:
+			_ = pool.Put(data)
 		}
 		pkt.DecRef()
 	}
@@ -138,11 +148,8 @@ func (e *Endpoint) outboundLoop(ctx context.Context) {
 func (e *Endpoint) writePacket(pkt *stack.PacketBuffer) tcpip.Error {
 	defer pkt.DecRef()
 
-	size := pkt.Size()
-	views := pkt.Views()
-
-	vView := buffer.NewVectorisedView(size, views)
-	if _, err := e.rw.Write(vView.ToView()); err != nil {
+	buf := pkt.Buffer()
+	if _, err := e.rw.Write(buf.Flatten()); err != nil {
 		return &tcpip.ErrInvalidEndpointState{}
 	}
 	return nil

listener/tun/device/tun/tun_wireguard.go

@@ -87,7 +87,11 @@ func (t *TUN) Write(packet []byte) (int, error) {
 
 	packet = append(t.cache[:t.offset], packet...)
 
-	return t.nt.Write(packet, t.offset)
+	n, err := t.nt.Write(packet, t.offset)
+	if n < t.offset {
+		return 0, err
+	}
+	return n - t.offset, err
 }
 
 func (t *TUN) Close() error {

listener/tun/ipstack/gvisor/adapter/adapter.go

@@ -2,23 +2,15 @@ package adapter
 
 import (
 	"net"
-
-	"gvisor.dev/gvisor/pkg/tcpip/stack"
 )
 
 // TCPConn implements the net.Conn interface.
 type TCPConn interface {
 	net.Conn
-
-	// ID returns the transport endpoint id of TCPConn.
-	ID() *stack.TransportEndpointID
 }
 
 // UDPConn implements net.Conn and net.PacketConn.
 type UDPConn interface {
 	net.Conn
 	net.PacketConn
-
-	// ID returns the transport endpoint id of UDPConn.
-	ID() *stack.TransportEndpointID
 }

listener/tun/ipstack/gvisor/handler.go

@@ -7,7 +7,6 @@ import (
 	"time"
 
 	"github.com/Dreamacro/clash/adapter/inbound"
-	"github.com/Dreamacro/clash/common/nnip"
 	"github.com/Dreamacro/clash/common/pool"
 	C "github.com/Dreamacro/clash/constant"
 	D "github.com/Dreamacro/clash/listener/tun/ipstack/commons"
@@ -27,15 +26,7 @@ type gvHandler struct {
 }
 
 func (gh *gvHandler) HandleTCP(tunConn adapter.TCPConn) {
-	id := tunConn.ID()
-
-	rAddr := &net.UDPAddr{
-		IP:   net.IP(id.LocalAddress),
-		Port: int(id.LocalPort),
-		Zone: "",
-	}
-
-	rAddrPort := netip.AddrPortFrom(nnip.IpToAddr(rAddr.IP), id.LocalPort)
+	rAddrPort := tunConn.LocalAddr().(*net.TCPAddr).AddrPort()
 
 	if D.ShouldHijackDns(gh.dnsHijack, rAddrPort, "tcp") {
 		go func() {
@@ -43,8 +34,8 @@ func (gh *gvHandler) HandleTCP(tunConn adapter.TCPConn) {
 
 			buf := pool.Get(pool.UDPBufferSize)
 			defer func() {
-				_ = pool.Put(buf)
 				_ = tunConn.Close()
+				_ = pool.Put(buf)
 			}()
 
 			for {
@@ -78,26 +69,18 @@ func (gh *gvHandler) HandleTCP(tunConn adapter.TCPConn) {
 		return
 	}
 
-	gh.tcpIn <- inbound.NewSocket(socks5.ParseAddrToSocksAddr(rAddr), tunConn, C.TUN)
+	gh.tcpIn <- inbound.NewSocket(socks5.AddrFromStdAddrPort(rAddrPort), tunConn, C.TUN)
 }
 
 func (gh *gvHandler) HandleUDP(tunConn adapter.UDPConn) {
-	id := tunConn.ID()
-
-	rAddr := &net.UDPAddr{
-		IP:   net.IP(id.LocalAddress),
-		Port: int(id.LocalPort),
-		Zone: "",
-	}
-
-	rAddrPort := netip.AddrPortFrom(nnip.IpToAddr(rAddr.IP), id.LocalPort)
+	rAddrPort := tunConn.LocalAddr().(*net.UDPAddr).AddrPort()
 
 	if rAddrPort.Addr() == gh.gateway {
 		_ = tunConn.Close()
 		return
 	}
 
-	target := socks5.ParseAddrToSocksAddr(rAddr)
+	target := socks5.AddrFromStdAddrPort(rAddrPort)
 
 	go func() {
 		for {
@@ -109,22 +92,20 @@ func (gh *gvHandler) HandleUDP(tunConn adapter.UDPConn) {
 				break
 			}
 
-			payload := buf[:n]
-
 			if D.ShouldHijackDns(gh.dnsHijack, rAddrPort, "udp") {
 				go func() {
 					defer func() {
 						_ = pool.Put(buf)
 					}()
 
-					msg, err1 := D.RelayDnsPacket(payload)
+					msg, err1 := D.RelayDnsPacket(buf[:n])
 					if err1 != nil {
 						return
 					}
 
 					_, _ = tunConn.WriteTo(msg, addr)
 
-					log.Debugln("[TUN] hijack dns udp: %s", rAddr.String())
+					log.Debugln("[TUN] hijack dns udp: %s", rAddrPort.String())
 				}()
 
 				continue
@@ -133,12 +114,14 @@ func (gh *gvHandler) HandleUDP(tunConn adapter.UDPConn) {
 			gvPacket := &packet{
 				pc:      tunConn,
 				rAddr:   addr,
-				payload: payload,
+				payload: buf,
+				offset:  n,
 			}
 
 			select {
 			case gh.udpIn <- inbound.NewPacket(target, gvPacket, C.TUN):
 			default:
+				gvPacket.Drop()
 			}
 		}
 	}()

listener/tun/ipstack/gvisor/tcp.go

@@ -70,7 +70,6 @@ func withTCPHandler(handle adapter.TCPHandleFunc) option.Option {
 
 			conn := &tcpConn{
 				TCPConn: gonet.NewTCPConn(&wq, ep),
-				id:      id,
 			}
 			handle(conn)
 		})
@@ -113,9 +112,4 @@ func setSocketOptions(s *stack.Stack, ep tcpip.Endpoint) tcpip.Error {
 
 type tcpConn struct {
 	*gonet.TCPConn
-	id stack.TransportEndpointID
-}
-
-func (c *tcpConn) ID() *stack.TransportEndpointID {
-	return &c.id
 }

listener/tun/ipstack/gvisor/udp.go

@@ -29,7 +29,6 @@ func withUDPHandler(handle adapter.UDPHandleFunc) option.Option {
 
 			conn := &udpConn{
 				UDPConn: gonet.NewUDPConn(s, &wq, ep),
-				id:      id,
 			}
 			handle(conn)
 		})
@@ -40,21 +39,17 @@ func withUDPHandler(handle adapter.UDPHandleFunc) option.Option {
 
 type udpConn struct {
 	*gonet.UDPConn
-	id stack.TransportEndpointID
-}
-
-func (c *udpConn) ID() *stack.TransportEndpointID {
-	return &c.id
 }
 
 type packet struct {
 	pc      adapter.UDPConn
 	rAddr   net.Addr
 	payload []byte
+	offset  int
 }
 
 func (c *packet) Data() []byte {
-	return c.payload
+	return c.payload[:c.offset]
 }
 
 // WriteBack write UDP packet with source(ip, port) = `addr`

listener/tun/ipstack/system/mars/nat/nat.go

@@ -5,8 +5,8 @@ import (
 	"net"
 	"net/netip"
 
-	"github.com/Dreamacro/clash/common/pool"
 	"github.com/Dreamacro/clash/listener/tun/ipstack/system/mars/tcpip"
+	"github.com/Dreamacro/clash/log"
 )
 
 func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *UDP, error) {
@@ -22,7 +22,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 	tab := newTable()
 	udp := &UDP{
 		device: device,
-		buf:    [pool.UDPBufferSize]byte{},
+		buf:    [0xffff]byte{},
 	}
 	tcp := &TCP{
 		listener: listener,
@@ -38,7 +38,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 			_ = udp.Close()
 		}()
 
-		buf := make([]byte, pool.RelayBufferSize)
+		buf := make([]byte, 0xffff)
 
 		for {
 			n, err := device.Read(buf)
@@ -133,7 +133,11 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 							continue
 						}
 
-						port = tab.newConn(tup)
+						port, err = tab.newConn(tup)
+						if err != nil {
+							log.Warnln("[STACK] drop tcp packet by system stack: %v", err)
+							continue
+						}
 					}
 
 					ip.SetSourceIP(portal)
@@ -152,7 +156,7 @@ func Start(device io.ReadWriter, gateway, portal, broadcast netip.Addr) (*TCP, *
 					continue
 				}
 
-				udp.handleUDPPacket(ip, u)
+				go udp.handleUDPPacket(ip, u)
 			case tcpip.ICMP:
 				i := tcpip.ICMPPacket(ip.Payload())
 

listener/tun/ipstack/system/mars/nat/table.go

@@ -1,9 +1,13 @@
 package nat
 
 import (
+	"fmt"
 	"net/netip"
+	"sync"
 
 	"github.com/Dreamacro/clash/common/generics/list"
+
+	"golang.org/x/exp/maps"
 )
 
 const (
@@ -27,6 +31,8 @@ type table struct {
 	tuples    map[tuple]*list.Element[*binding]
 	ports     [portLength]*list.Element[*binding]
 	available *list.List[*binding]
+	mux       sync.Mutex
+	count     uint16
 }
 
 func (t *table) tupleOf(port uint16) tuple {
@@ -43,27 +49,64 @@ func (t *table) tupleOf(port uint16) tuple {
 }
 
 func (t *table) portOf(tuple tuple) uint16 {
+	t.mux.Lock()
 	elm := t.tuples[tuple]
 	if elm == nil {
+		t.mux.Unlock()
 		return 0
 	}
+	t.mux.Unlock()
 
 	t.available.MoveToFront(elm)
 
 	return portBegin + elm.Value.offset
 }
 
-func (t *table) newConn(tuple tuple) uint16 {
-	elm := t.available.Back()
-	b := elm.Value
+func (t *table) newConn(tuple tuple) (uint16, error) {
+	t.mux.Lock()
+	elm, err := t.availableConn()
+	if err != nil {
+		t.mux.Unlock()
+		return 0, err
+	}
 
-	delete(t.tuples, b.tuple)
+	elm.Value.tuple = tuple
 	t.tuples[tuple] = elm
-	b.tuple = tuple
+	t.mux.Unlock()
 
-	t.available.MoveToFront(elm)
+	return portBegin + elm.Value.offset, nil
+}
 
-	return portBegin + b.offset
+func (t *table) availableConn() (*list.Element[*binding], error) {
+	var elm *list.Element[*binding]
+
+	for i := 0; i < portLength; i++ {
+		elm = t.available.Back()
+		t.available.MoveToFront(elm)
+
+		offset := elm.Value.offset
+		tup := t.ports[offset].Value.tuple
+		if t.tuples[tup] != nil && tup.SourceAddr.IsValid() {
+			continue
+		}
+
+		if t.count == portLength { // resize
+			tuples := make(map[tuple]*list.Element[*binding], portLength)
+			maps.Copy(tuples, t.tuples)
+			t.tuples = tuples
+			t.count = 1
+		}
+		return elm, nil
+	}
+
+	return nil, fmt.Errorf("too many open files, limits [%d, %d]", portLength, len(t.tuples))
+}
+
+func (t *table) closeConn(tuple tuple) {
+	t.mux.Lock()
+	delete(t.tuples, tuple)
+	t.count++
+	t.mux.Unlock()
 }
 
 func newTable() *table {
@@ -71,6 +114,7 @@ func newTable() *table {
 		tuples:    make(map[tuple]*list.Element[*binding], portLength),
 		ports:     [portLength]*list.Element[*binding]{},
 		available: list.New[*binding](),
+		count:     1,
 	}
 
 	for idx := range result.ports {

listener/tun/ipstack/system/mars/nat/tcp.go

@@ -16,6 +16,8 @@ type conn struct {
 	net.Conn
 
 	tuple tuple
+
+	close func()
 }
 
 func (t *TCP) Accept() (net.Conn, error) {
@@ -24,9 +26,9 @@ func (t *TCP) Accept() (net.Conn, error) {
 		return nil, err
 	}
 
-	addr := c.RemoteAddr().(*net.TCPAddr)
-	tup := t.table.tupleOf(uint16(addr.Port))
-	if !addr.IP.Equal(t.portal.AsSlice()) || tup == zeroTuple {
+	addr := c.RemoteAddr().(*net.TCPAddr).AddrPort()
+	tup := t.table.tupleOf(addr.Port())
+	if addr.Addr() != t.portal || tup == zeroTuple {
 		_ = c.Close()
 
 		return nil, net.InvalidAddrError("unknown remote addr")
@@ -34,9 +36,14 @@ func (t *TCP) Accept() (net.Conn, error) {
 
 	addition(c)
 
+	_ = c.SetLinger(0)
+
 	return &conn{
 		Conn:  c,
 		tuple: tup,
+		close: func() {
+			t.table.closeConn(tup)
+		},
 	}, nil
 }
 
@@ -52,16 +59,15 @@ func (t *TCP) SetDeadline(time time.Time) error {
 	return t.listener.SetDeadline(time)
 }
 
+func (c *conn) Close() error {
+	c.close()
+	return c.Conn.Close()
+}
+
 func (c *conn) LocalAddr() net.Addr {
-	return &net.TCPAddr{
-		IP:   c.tuple.SourceAddr.Addr().AsSlice(),
-		Port: int(c.tuple.SourceAddr.Port()),
-	}
+	return net.TCPAddrFromAddrPort(c.tuple.SourceAddr)
 }
 
 func (c *conn) RemoteAddr() net.Addr {
-	return &net.TCPAddr{
-		IP:   c.tuple.DestinationAddr.Addr().AsSlice(),
-		Port: int(c.tuple.DestinationAddr.Port()),
-	}
+	return net.TCPAddrFromAddrPort(c.tuple.DestinationAddr)
 }

listener/tun/ipstack/system/mars/nat/udp.go

@@ -7,8 +7,6 @@ import (
 	"net/netip"
 	"sync"
 
-	"github.com/Dreamacro/clash/common/nnip"
-	"github.com/Dreamacro/clash/common/pool"
 	"github.com/Dreamacro/clash/listener/tun/ipstack/system/mars/tcpip"
 )
 
@@ -16,8 +14,8 @@ type call struct {
 	cond        *sync.Cond
 	buf         []byte
 	n           int
-	source      net.Addr
-	destination net.Addr
+	source      netip.AddrPort
+	destination netip.AddrPort
 }
 
 type UDP struct {
@@ -26,10 +24,10 @@ type UDP struct {
 	queueLock sync.Mutex
 	queue     []*call
 	bufLock   sync.Mutex
-	buf       [pool.UDPBufferSize]byte
+	buf       [0xffff]byte
 }
 
-func (u *UDP) ReadFrom(buf []byte) (int, net.Addr, net.Addr, error) {
+func (u *UDP) ReadFrom(buf []byte) (int, netip.AddrPort, netip.AddrPort, error) {
 	u.queueLock.Lock()
 	defer u.queueLock.Unlock()
 
@@ -38,8 +36,8 @@ func (u *UDP) ReadFrom(buf []byte) (int, net.Addr, net.Addr, error) {
 			cond:        sync.NewCond(&u.queueLock),
 			buf:         buf,
 			n:           -1,
-			source:      nil,
-			destination: nil,
+			source:      netip.AddrPort{},
+			destination: netip.AddrPort{},
 		}
 
 		u.queue = append(u.queue, c)
@@ -51,10 +49,10 @@ func (u *UDP) ReadFrom(buf []byte) (int, net.Addr, net.Addr, error) {
 		}
 	}
 
-	return -1, nil, nil, net.ErrClosed
+	return -1, netip.AddrPort{}, netip.AddrPort{}, net.ErrClosed
 }
 
-func (u *UDP) WriteTo(buf []byte, local net.Addr, remote net.Addr) (int, error) {
+func (u *UDP) WriteTo(buf []byte, local netip.AddrPort, remote netip.AddrPort) (int, error) {
 	if u.closed {
 		return 0, net.ErrClosed
 	}
@@ -66,16 +64,7 @@ func (u *UDP) WriteTo(buf []byte, local net.Addr, remote net.Addr) (int, error)
 		return 0, net.InvalidAddrError("invalid ip version")
 	}
 
-	srcAddr, srcOk := local.(*net.UDPAddr)
-	dstAddr, dstOk := remote.(*net.UDPAddr)
-	if !srcOk || !dstOk {
-		return 0, net.InvalidAddrError("invalid addr")
-	}
-
-	srcAddrPort := netip.AddrPortFrom(nnip.IpToAddr(srcAddr.IP), uint16(srcAddr.Port))
-	dstAddrPort := netip.AddrPortFrom(nnip.IpToAddr(dstAddr.IP), uint16(dstAddr.Port))
-
-	if !srcAddrPort.Addr().Is4() || !dstAddrPort.Addr().Is4() {
+	if !local.Addr().Is4() || !remote.Addr().Is4() {
 		return 0, net.InvalidAddrError("invalid ip version")
 	}
 
@@ -89,13 +78,13 @@ func (u *UDP) WriteTo(buf []byte, local net.Addr, remote net.Addr) (int, error)
 	ip.SetFragmentOffset(0)
 	ip.SetTimeToLive(64)
 	ip.SetProtocol(tcpip.UDP)
-	ip.SetSourceIP(srcAddrPort.Addr())
-	ip.SetDestinationIP(dstAddrPort.Addr())
+	ip.SetSourceIP(local.Addr())
+	ip.SetDestinationIP(remote.Addr())
 
 	udp := tcpip.UDPPacket(ip.Payload())
 	udp.SetLength(tcpip.UDPHeaderSize + uint16(len(buf)))
-	udp.SetSourcePort(srcAddrPort.Port())
-	udp.SetDestinationPort(dstAddrPort.Port())
+	udp.SetSourcePort(local.Port())
+	udp.SetDestinationPort(remote.Port())
 	copy(udp.Payload(), buf)
 
 	ip.ResetChecksum()
@@ -131,14 +120,8 @@ func (u *UDP) handleUDPPacket(ip tcpip.IP, pkt tcpip.UDPPacket) {
 	u.queueLock.Unlock()
 
 	if c != nil {
-		c.source = &net.UDPAddr{
-			IP:   ip.SourceIP().AsSlice(),
-			Port: int(pkt.SourcePort()),
-		}
-		c.destination = &net.UDPAddr{
-			IP:   ip.DestinationIP().AsSlice(),
-			Port: int(pkt.DestinationPort()),
-		}
+		c.source = netip.AddrPortFrom(ip.SourceIP(), pkt.SourcePort())
+		c.destination = netip.AddrPortFrom(ip.DestinationIP(), pkt.DestinationPort())
 		c.n = copy(c.buf, pkt.Payload())
 		c.cond.Signal()
 	}

listener/tun/ipstack/system/stack.go

@@ -81,26 +81,23 @@ func New(device device.Device, dnsHijack []C.DNSUrl, tunAddress netip.Prefix, tc
 				continue
 			}
 
-			lAddr := conn.LocalAddr().(*net.TCPAddr)
-			rAddr := conn.RemoteAddr().(*net.TCPAddr)
+			lAddr := conn.LocalAddr().(*net.TCPAddr).AddrPort()
+			rAddr := conn.RemoteAddr().(*net.TCPAddr).AddrPort()
 
-			lAddrPort := netip.AddrPortFrom(nnip.IpToAddr(lAddr.IP), uint16(lAddr.Port))
-			rAddrPort := netip.AddrPortFrom(nnip.IpToAddr(rAddr.IP), uint16(rAddr.Port))
-
-			if rAddrPort.Addr().IsLoopback() {
+			if rAddr.Addr().IsLoopback() {
 				_ = conn.Close()
 
 				continue
 			}
 
-			if D.ShouldHijackDns(dnsAddr, rAddrPort, "tcp") {
+			if D.ShouldHijackDns(dnsAddr, rAddr, "tcp") {
 				go func() {
-					log.Debugln("[TUN] hijack dns tcp: %s", rAddrPort.String())
+					log.Debugln("[TUN] hijack dns tcp: %s", rAddr.String())
 
 					buf := pool.Get(pool.UDPBufferSize)
 					defer func() {
-						_ = pool.Put(buf)
 						_ = conn.Close()
+						_ = pool.Put(buf)
 					}()
 
 					for {
@@ -137,10 +134,10 @@ func New(device device.Device, dnsHijack []C.DNSUrl, tunAddress netip.Prefix, tc
 			metadata := &C.Metadata{
 				NetWork:  C.TCP,
 				Type:     C.TUN,
-				SrcIP:    lAddrPort.Addr(),
-				DstIP:    rAddrPort.Addr(),
-				SrcPort:  strconv.Itoa(lAddr.Port),
-				DstPort:  strconv.Itoa(rAddr.Port),
+				SrcIP:    lAddr.Addr(),
+				DstIP:    rAddr.Addr(),
+				SrcPort:  strconv.FormatUint(uint64(lAddr.Port()), 10),
+				DstPort:  strconv.FormatUint(uint64(rAddr.Port()), 10),
 				AddrType: C.AtypIPv4,
 				Host:     "",
 			}
@@ -159,56 +156,50 @@ func New(device device.Device, dnsHijack []C.DNSUrl, tunAddress netip.Prefix, tc
 		for !ipStack.closed {
 			buf := pool.Get(pool.UDPBufferSize)
 
-			n, lRAddr, rRAddr, err := stack.UDP().ReadFrom(buf)
+			n, lAddr, rAddr, err := stack.UDP().ReadFrom(buf)
 			if err != nil {
 				_ = pool.Put(buf)
 				break
 			}
 
-			raw := buf[:n]
-			lAddr := lRAddr.(*net.UDPAddr)
-			rAddr := rRAddr.(*net.UDPAddr)
-
-			rAddrPort := netip.AddrPortFrom(nnip.IpToAddr(rAddr.IP), uint16(rAddr.Port))
-
-			if rAddrPort.Addr().IsLoopback() || rAddrPort.Addr() == gateway {
+			if rAddr.Addr().IsLoopback() || rAddr.Addr() == gateway {
 				_ = pool.Put(buf)
 
 				continue
 			}
 
-			if D.ShouldHijackDns(dnsAddr, rAddrPort, "udp") {
+			if D.ShouldHijackDns(dnsAddr, rAddr, "udp") {
 				go func() {
-					msg, err := D.RelayDnsPacket(raw)
-					if err != nil {
+					defer func() {
 						_ = pool.Put(buf)
+					}()
+
+					msg, err := D.RelayDnsPacket(buf[:n])
+					if err != nil {
 						return
 					}
 
 					_, _ = stack.UDP().WriteTo(msg, rAddr, lAddr)
 
-					_ = pool.Put(buf)
-
-					log.Debugln("[TUN] hijack dns udp: %s", rAddrPort.String())
+					log.Debugln("[TUN] hijack dns udp: %s", rAddr.String())
 				}()
 
 				continue
 			}
 
 			pkt := &packet{
-				local: lAddr,
-				data:  raw,
+				local:  lAddr,
+				data:   buf,
+				offset: n,
 				writeBack: func(b []byte, addr net.Addr) (int, error) {
 					return stack.UDP().WriteTo(b, rAddr, lAddr)
 				},
-				drop: func() {
-					_ = pool.Put(buf)
-				},
 			}
 
 			select {
-			case udpIn <- inbound.NewPacket(socks5.ParseAddrToSocksAddr(rAddr), pkt, C.TUN):
+			case udpIn <- inbound.NewPacket(socks5.AddrFromStdAddrPort(rAddr), pkt, C.TUN):
 			default:
+				pkt.Drop()
 			}
 		}
 

listener/tun/ipstack/system/udp.go

@@ -1,16 +1,21 @@
 package system
 
-import "net"
+import (
+	"net"
+	"net/netip"
+
+	"github.com/Dreamacro/clash/common/pool"
+)
 
 type packet struct {
-	local     *net.UDPAddr
+	local     netip.AddrPort
 	data      []byte
+	offset    int
 	writeBack func(b []byte, addr net.Addr) (int, error)
-	drop      func()
 }
 
 func (pkt *packet) Data() []byte {
-	return pkt.data
+	return pkt.data[:pkt.offset]
 }
 
 func (pkt *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
@@ -18,9 +23,9 @@ func (pkt *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
 }
 
 func (pkt *packet) Drop() {
-	pkt.drop()
+	_ = pool.Put(pkt.data)
 }
 
 func (pkt *packet) LocalAddr() net.Addr {
-	return pkt.local
+	return net.UDPAddrFromAddrPort(pkt.local)
 }

rule/geosite.go

@@ -51,11 +51,11 @@ func NewGEOSITE(country string, adapter string) (*GEOSITE, error) {
 		return nil, fmt.Errorf("load GeoSite data error, %s", err.Error())
 	}
 
-	cont := fmt.Sprintf("%d", recordsCount)
+	count := fmt.Sprintf("%d", recordsCount)
 	if recordsCount == 0 {
-		cont = "from cache"
+		count = "from cache"
 	}
-	log.Infoln("Start initial GeoSite rule %s => %s, records: %s", country, adapter, cont)
+	log.Infoln("Start initial GeoSite rule %s => %s, records: %s", country, adapter, count)
 
 	geoSite := &GEOSITE{
 		Base:    &Base{},

transport/socks5/socks5.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"io"
 	"net"
+	"net/netip"
 	"strconv"
 
 	"github.com/Dreamacro/clash/component/auth"
@@ -398,6 +399,21 @@ func ParseAddrToSocksAddr(addr net.Addr) Addr {
 	return parsed
 }
 
+func AddrFromStdAddrPort(addrPort netip.AddrPort) Addr {
+	addr := addrPort.Addr()
+	if addr.Is4() {
+		ip4 := addr.As4()
+		return []byte{AtypIPv4, ip4[0], ip4[1], ip4[2], ip4[3], byte(addrPort.Port() >> 8), byte(addrPort.Port())}
+	}
+
+	buf := make([]byte, 1+net.IPv6len+2)
+	buf[0] = AtypIPv6
+	copy(buf[1:], addr.AsSlice())
+	buf[1+net.IPv6len] = byte(addrPort.Port() >> 8)
+	buf[1+net.IPv6len+1] = byte(addrPort.Port())
+	return buf
+}
+
 // DecodeUDPPacket split `packet` to addr payload, and this function is mutable with `packet`
 func DecodeUDPPacket(packet []byte) (addr Addr, payload []byte, err error) {
 	if len(packet) < 5 {

tunnel/connection.go

@@ -16,7 +16,7 @@ func handleUDPToRemote(packet C.UDPPacket, pc C.PacketConn, metadata *C.Metadata
 
 	// local resolve UDP dns
 	if !metadata.Resolved() {
-		ip, err := resolver.ResolveIP(metadata.Host)
+		ip, err := resolver.ResolveFirstIP(metadata.Host)
 		if err != nil {
 			return err
 		}
@@ -32,19 +32,21 @@ func handleUDPToRemote(packet C.UDPPacket, pc C.PacketConn, metadata *C.Metadata
 		return err
 	}
 	// reset timeout
-	pc.SetReadDeadline(time.Now().Add(udpTimeout))
+	_ = pc.SetReadDeadline(time.Now().Add(udpTimeout))
 
 	return nil
 }
 
 func handleUDPToLocal(packet C.UDPPacket, pc net.PacketConn, key string, fAddr net.Addr) {
 	buf := pool.Get(pool.UDPBufferSize)
-	defer pool.Put(buf)
-	defer natTable.Delete(key)
-	defer pc.Close()
+	defer func() {
+		_ = pc.Close()
+		natTable.Delete(key)
+		_ = pool.Put(buf)
+	}()
 
 	for {
-		pc.SetReadDeadline(time.Now().Add(udpTimeout))
+		_ = pc.SetReadDeadline(time.Now().Add(udpTimeout))
 		n, from, err := pc.ReadFrom(buf)
 		if err != nil {
 			return

tunnel/tunnel.go

@@ -190,19 +190,6 @@ func preHandleMetadata(metadata *C.Metadata) error {
 		}
 	}
 
-	// pre resolve process name
-	srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
-	if err == nil && P.ShouldFindProcess(metadata) {
-		path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, int(srcPort))
-		if err != nil {
-			log.Debugln("[Process] find process %s: %v", metadata.String(), err)
-		} else {
-			log.Debugln("[Process] %s from process %s", metadata.String(), path)
-			metadata.Process = filepath.Base(path)
-			metadata.ProcessPath = path
-		}
-	}
-
 	return nil
 }
 
@@ -385,7 +372,10 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 	configMux.RLock()
 	defer configMux.RUnlock()
 
-	var resolved bool
+	var (
+		resolved     bool
+		processFound bool
+	)
 
 	if node := resolver.DefaultHosts.Search(metadata.Host); node != nil {
 		metadata.DstIP = node.Data
@@ -404,6 +394,22 @@ func match(metadata *C.Metadata) (C.Proxy, C.Rule, error) {
 			resolved = true
 		}
 
+		if !processFound && rule.ShouldFindProcess() && P.ShouldFindProcess(metadata) {
+			processFound = true
+
+			srcPort, err := strconv.ParseUint(metadata.SrcPort, 10, 16)
+			if err == nil {
+				path, err := P.FindProcessName(metadata.NetWork.String(), metadata.SrcIP, int(srcPort))
+				if err != nil {
+					log.Debugln("[Process] find process %s: %v", metadata.String(), err)
+				} else {
+					log.Debugln("[Process] %s from process %s", metadata.String(), path)
+					metadata.Process = filepath.Base(path)
+					metadata.ProcessPath = path
+				}
+			}
+		}
+
 		if rule.Match(metadata) {
 			adapter, ok := proxies[rule.Adapter()]
 			if !ok {