Update documentation

Signed-off-by: 世界 <i@sekai.icu>
Signed-off-by: unknowndevQwQ <unknowndevQwQ@pm.me>

.gitignore

@@ -4,4 +4,5 @@
 /*.db
 /site/
 /bin/
-/dist/
+/dist/
+/sing-box

Makefile

@@ -1,7 +1,8 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
 TAGS ?= with_gvisor,with_quic,with_wireguard,with_clash_api
-PARAMS = -v -trimpath -tags '$(TAGS)' -ldflags '-s -w -buildid='
+TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_shadowsocksr
+PARAMS = -v -trimpath -tags "$(TAGS)" -ldflags "-s -w -buildid="
 MAIN = ./cmd/sing-box
 
 .PHONY: test release
@@ -59,13 +60,19 @@ release_install:
 	go install -v github.com/tcnksm/ghr@latest
 
 test:
-	@go test -v . && \
+	@go test -v ./... && \
 	cd test && \
 	go mod tidy && \
-	go test -v -tags with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_shadowsocksr .
+	go test -v -tags "$(TAGS_TEST)" .
+
+test_stdio:
+	@go test -v ./... && \
+	cd test && \
+	go mod tidy && \
+	go test -v -tags "$(TAGS_TEST),force_stdio" .
 
 clean:
-	rm -rf bin dist
+	rm -rf bin dist sing-box
 	rm -f $(shell go env GOPATH)/sing-box
 
 update:

adapter/experimental.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"net"
 
+	"github.com/sagernet/sing-box/common/urltest"
 	N "github.com/sagernet/sing/common/network"
 )
 
@@ -12,6 +13,7 @@ type ClashServer interface {
 	Mode() string
 	StoreSelected() bool
 	CacheFile() ClashCacheFile
+	HistoryStorage() *urltest.HistoryStorage
 	RoutedConnection(ctx context.Context, conn net.Conn, metadata InboundContext, matchedRule Rule) (net.Conn, Tracker)
 	RoutedPacketConnection(ctx context.Context, conn N.PacketConn, metadata InboundContext, matchedRule Rule) (N.PacketConn, Tracker)
 }
@@ -36,3 +38,13 @@ func OutboundTag(detour Outbound) string {
 	}
 	return detour.Tag()
 }
+
+type V2RayServer interface {
+	Service
+	StatsService() V2RayStatsService
+}
+
+type V2RayStatsService interface {
+	RoutedConnection(inbound string, outbound string, conn net.Conn) net.Conn
+	RoutedPacketConnection(inbound string, outbound string, conn N.PacketConn) N.PacketConn
+}

adapter/router.go

@@ -41,7 +41,10 @@ type Router interface {
 	Rules() []Rule
 
 	ClashServer() ClashServer
-	SetClashServer(controller ClashServer)
+	SetClashServer(server ClashServer)
+
+	V2RayServer() V2RayServer
+	SetV2RayServer(server V2RayServer)
 }
 
 type Rule interface {

adapter/upstream.go

@@ -38,13 +38,25 @@ type myUpstreamHandlerWrapper struct {
 }
 
 func (w *myUpstreamHandlerWrapper) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
-	w.metadata.Destination = metadata.Destination
+	myMetadata := w.metadata
-	return w.connectionHandler(ctx, conn, w.metadata)
+	if metadata.Source.IsValid() {
+		myMetadata.Source = metadata.Source
+	}
+	if metadata.Destination.IsValid() {
+		myMetadata.Destination = metadata.Destination
+	}
+	return w.connectionHandler(ctx, conn, myMetadata)
 }
 
 func (w *myUpstreamHandlerWrapper) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
-	w.metadata.Destination = metadata.Destination
+	myMetadata := w.metadata
-	return w.packetHandler(ctx, conn, w.metadata)
+	if metadata.Source.IsValid() {
+		myMetadata.Source = metadata.Source
+	}
+	if metadata.Destination.IsValid() {
+		myMetadata.Destination = metadata.Destination
+	}
+	return w.packetHandler(ctx, conn, myMetadata)
 }
 
 func (w *myUpstreamHandlerWrapper) NewError(ctx context.Context, err error) {
@@ -78,13 +90,23 @@ func NewUpstreamContextHandler(
 
 func (w *myUpstreamContextHandlerWrapper) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
 	myMetadata := ContextFrom(ctx)
-	myMetadata.Destination = metadata.Destination
+	if metadata.Source.IsValid() {
+		myMetadata.Source = metadata.Source
+	}
+	if metadata.Destination.IsValid() {
+		myMetadata.Destination = metadata.Destination
+	}
 	return w.connectionHandler(ctx, conn, *myMetadata)
 }
 
 func (w *myUpstreamContextHandlerWrapper) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
 	myMetadata := ContextFrom(ctx)
-	myMetadata.Destination = metadata.Destination
+	if metadata.Source.IsValid() {
+		myMetadata.Source = metadata.Source
+	}
+	if metadata.Destination.IsValid() {
+		myMetadata.Destination = metadata.Destination
+	}
 	return w.packetHandler(ctx, conn, *myMetadata)
 }
 

box.go

@@ -31,6 +31,7 @@ type Box struct {
 	logger      log.ContextLogger
 	logFile     *os.File
 	clashServer adapter.ClashServer
+	v2rayServer adapter.V2RayServer
 	done        chan struct{}
 }
 
@@ -39,8 +40,14 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 	logOptions := common.PtrValueOrDefault(options.Log)
 
 	var needClashAPI bool
-	if options.Experimental != nil && options.Experimental.ClashAPI != nil && options.Experimental.ClashAPI.ExternalController != "" {
+	var needV2RayAPI bool
-		needClashAPI = true
+	if options.Experimental != nil {
+		if options.Experimental.ClashAPI != nil && options.Experimental.ClashAPI.ExternalController != "" {
+			needClashAPI = true
+		}
+		if options.Experimental.V2RayAPI != nil && options.Experimental.V2RayAPI.Listen != "" {
+			needV2RayAPI = true
+		}
 	}
 
 	var logFactory log.Factory
@@ -149,6 +156,7 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 	}
 
 	var clashServer adapter.ClashServer
+	var v2rayServer adapter.V2RayServer
 	if needClashAPI {
 		clashServer, err = experimental.NewClashServer(router, observableLogFactory, common.PtrValueOrDefault(options.Experimental.ClashAPI))
 		if err != nil {
@@ -156,15 +164,23 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 		}
 		router.SetClashServer(clashServer)
 	}
+	if needV2RayAPI {
+		v2rayServer, err = experimental.NewV2RayServer(logFactory.NewLogger("v2ray-api"), common.PtrValueOrDefault(options.Experimental.V2RayAPI))
+		if err != nil {
+			return nil, E.Cause(err, "create v2ray api server")
+		}
+		router.SetV2RayServer(v2rayServer)
+	}
 	return &Box{
 		router:      router,
 		inbounds:    inbounds,
 		outbounds:   outbounds,
 		createdAt:   createdAt,
 		logFactory:  logFactory,
-		logger:      logFactory.NewLogger(""),
+		logger:      logFactory.Logger(),
 		logFile:     logFile,
 		clashServer: clashServer,
+		v2rayServer: v2rayServer,
 		done:        make(chan struct{}),
 	}, nil
 }
@@ -223,6 +239,12 @@ func (s *Box) start() error {
 			return E.Cause(err, "start clash api server")
 		}
 	}
+	if s.v2rayServer != nil {
+		err = s.v2rayServer.Start()
+		if err != nil {
+			return E.Cause(err, "start v2ray api server")
+		}
+	}
 	s.logger.Info("sing-box started (", F.Seconds(time.Since(s.createdAt).Seconds()), "s)")
 	return nil
 }
@@ -244,6 +266,11 @@ func (s *Box) Close() error {
 		s.router,
 		s.logFactory,
 		s.clashServer,
+		s.v2rayServer,
 		common.PtrOrNil(s.logFile),
 	)
 }
+
+func (s *Box) Router() adapter.Router {
+	return s.router
+}

common/baderror/baderror.go

@@ -26,7 +26,7 @@ func WrapH2(err error) error {
 	if err == io.ErrUnexpectedEOF {
 		return io.EOF
 	}
-	if Contains(err, "client disconnected", "body closed by handler") {
+	if Contains(err, "client disconnected", "body closed by handler", "response body closed", "; CANCEL") {
 		return net.ErrClosed
 	}
 	return err

common/badtls/badtls.go

@@ -0,0 +1,210 @@
+//go:build go1.19 && !go1.20
+
+package badtls
+
+import (
+	"crypto/cipher"
+	"crypto/rand"
+	"crypto/tls"
+	"encoding/binary"
+	"io"
+	"net"
+	"reflect"
+	"sync"
+	"sync/atomic"
+	"unsafe"
+
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/buf"
+	"github.com/sagernet/sing/common/bufio"
+	E "github.com/sagernet/sing/common/exceptions"
+	N "github.com/sagernet/sing/common/network"
+)
+
+type Conn struct {
+	*tls.Conn
+	writer           N.ExtendedWriter
+	activeCall       *int32
+	closeNotifySent  *bool
+	version          *uint16
+	rand             io.Reader
+	halfAccess       *sync.Mutex
+	halfError        *error
+	cipher           cipher.AEAD
+	explicitNonceLen int
+	halfPtr          uintptr
+	halfSeq          []byte
+	halfScratchBuf   []byte
+}
+
+func Create(conn *tls.Conn) (TLSConn, error) {
+	if !handshakeComplete(conn) {
+		return nil, E.New("handshake not finished")
+	}
+	rawConn := reflect.Indirect(reflect.ValueOf(conn))
+	rawActiveCall := rawConn.FieldByName("activeCall")
+	if !rawActiveCall.IsValid() || rawActiveCall.Kind() != reflect.Int32 {
+		return nil, E.New("badtls: invalid active call")
+	}
+	activeCall := (*int32)(unsafe.Pointer(rawActiveCall.UnsafeAddr()))
+	rawHalfConn := rawConn.FieldByName("out")
+	if !rawHalfConn.IsValid() || rawHalfConn.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid half conn")
+	}
+	rawVersion := rawConn.FieldByName("vers")
+	if !rawVersion.IsValid() || rawVersion.Kind() != reflect.Uint16 {
+		return nil, E.New("badtls: invalid version")
+	}
+	version := (*uint16)(unsafe.Pointer(rawVersion.UnsafeAddr()))
+	rawCloseNotifySent := rawConn.FieldByName("closeNotifySent")
+	if !rawCloseNotifySent.IsValid() || rawCloseNotifySent.Kind() != reflect.Bool {
+		return nil, E.New("badtls: invalid notify")
+	}
+	closeNotifySent := (*bool)(unsafe.Pointer(rawCloseNotifySent.UnsafeAddr()))
+	rawConfig := reflect.Indirect(rawConn.FieldByName("config"))
+	if !rawConfig.IsValid() || rawConfig.Kind() != reflect.Struct {
+		return nil, E.New("badtls: bad config")
+	}
+	config := (*tls.Config)(unsafe.Pointer(rawConfig.UnsafeAddr()))
+	randReader := config.Rand
+	if randReader == nil {
+		randReader = rand.Reader
+	}
+	rawHalfMutex := rawHalfConn.FieldByName("Mutex")
+	if !rawHalfMutex.IsValid() || rawHalfMutex.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid half mutex")
+	}
+	halfAccess := (*sync.Mutex)(unsafe.Pointer(rawHalfMutex.UnsafeAddr()))
+	rawHalfError := rawHalfConn.FieldByName("err")
+	if !rawHalfError.IsValid() || rawHalfError.Kind() != reflect.Interface {
+		return nil, E.New("badtls: invalid half error")
+	}
+	halfError := (*error)(unsafe.Pointer(rawHalfError.UnsafeAddr()))
+	rawHalfCipherInterface := rawHalfConn.FieldByName("cipher")
+	if !rawHalfCipherInterface.IsValid() || rawHalfCipherInterface.Kind() != reflect.Interface {
+		return nil, E.New("badtls: invalid cipher interface")
+	}
+	rawHalfCipher := rawHalfCipherInterface.Elem()
+	aeadCipher, loaded := valueInterface(rawHalfCipher, false).(cipher.AEAD)
+	if !loaded {
+		return nil, E.New("badtls: invalid AEAD cipher")
+	}
+	var explicitNonceLen int
+	switch cipherName := reflect.Indirect(rawHalfCipher).Type().String(); cipherName {
+	case "tls.prefixNonceAEAD":
+		explicitNonceLen = aeadCipher.NonceSize()
+	case "tls.xorNonceAEAD":
+	default:
+		return nil, E.New("badtls: unknown cipher type: ", cipherName)
+	}
+	rawHalfSeq := rawHalfConn.FieldByName("seq")
+	if !rawHalfSeq.IsValid() || rawHalfSeq.Kind() != reflect.Array {
+		return nil, E.New("badtls: invalid seq")
+	}
+	halfSeq := rawHalfSeq.Bytes()
+	rawHalfScratchBuf := rawHalfConn.FieldByName("scratchBuf")
+	if !rawHalfScratchBuf.IsValid() || rawHalfScratchBuf.Kind() != reflect.Array {
+		return nil, E.New("badtls: invalid scratchBuf")
+	}
+	halfScratchBuf := rawHalfScratchBuf.Bytes()
+	return &Conn{
+		Conn:             conn,
+		writer:           bufio.NewExtendedWriter(conn.NetConn()),
+		activeCall:       activeCall,
+		closeNotifySent:  closeNotifySent,
+		version:          version,
+		halfAccess:       halfAccess,
+		halfError:        halfError,
+		cipher:           aeadCipher,
+		explicitNonceLen: explicitNonceLen,
+		rand:             randReader,
+		halfPtr:          rawHalfConn.UnsafeAddr(),
+		halfSeq:          halfSeq,
+		halfScratchBuf:   halfScratchBuf,
+	}, nil
+}
+
+func (c *Conn) WriteBuffer(buffer *buf.Buffer) error {
+	if buffer.Len() > maxPlaintext {
+		defer buffer.Release()
+		return common.Error(c.Write(buffer.Bytes()))
+	}
+	for {
+		x := atomic.LoadInt32(c.activeCall)
+		if x&1 != 0 {
+			return net.ErrClosed
+		}
+		if atomic.CompareAndSwapInt32(c.activeCall, x, x+2) {
+			break
+		}
+	}
+	defer atomic.AddInt32(c.activeCall, -2)
+	c.halfAccess.Lock()
+	defer c.halfAccess.Unlock()
+	if err := *c.halfError; err != nil {
+		return err
+	}
+	if *c.closeNotifySent {
+		return errShutdown
+	}
+	dataLen := buffer.Len()
+	dataBytes := buffer.Bytes()
+	outBuf := buffer.ExtendHeader(recordHeaderLen + c.explicitNonceLen)
+	outBuf[0] = 23
+	version := *c.version
+	if version == 0 {
+		version = tls.VersionTLS10
+	} else if version == tls.VersionTLS13 {
+		version = tls.VersionTLS12
+	}
+	binary.BigEndian.PutUint16(outBuf[1:], version)
+	var nonce []byte
+	if c.explicitNonceLen > 0 {
+		nonce = outBuf[5 : 5+c.explicitNonceLen]
+		if c.explicitNonceLen < 16 {
+			copy(nonce, c.halfSeq)
+		} else {
+			if _, err := io.ReadFull(c.rand, nonce); err != nil {
+				return err
+			}
+		}
+	}
+	if len(nonce) == 0 {
+		nonce = c.halfSeq
+	}
+	if *c.version == tls.VersionTLS13 {
+		buffer.FreeBytes()[0] = 23
+		binary.BigEndian.PutUint16(outBuf[3:], uint16(dataLen+1+c.cipher.Overhead()))
+		c.cipher.Seal(outBuf, nonce, outBuf[recordHeaderLen:recordHeaderLen+c.explicitNonceLen+dataLen+1], outBuf[:recordHeaderLen])
+		buffer.Extend(1 + c.cipher.Overhead())
+	} else {
+		binary.BigEndian.PutUint16(outBuf[3:], uint16(dataLen))
+		additionalData := append(c.halfScratchBuf[:0], c.halfSeq...)
+		additionalData = append(additionalData, outBuf[:recordHeaderLen]...)
+		c.cipher.Seal(outBuf, nonce, dataBytes, additionalData)
+		buffer.Extend(c.cipher.Overhead())
+		binary.BigEndian.PutUint16(outBuf[3:], uint16(dataLen+c.explicitNonceLen+c.cipher.Overhead()))
+	}
+	incSeq(c.halfPtr)
+	return c.writer.WriteBuffer(buffer)
+}
+
+func (c *Conn) FrontHeadroom() int {
+	return recordHeaderLen + c.explicitNonceLen
+}
+
+func (c *Conn) RearHeadroom() int {
+	return 1 + c.cipher.Overhead()
+}
+
+func (c *Conn) WriterMTU() int {
+	return maxPlaintext
+}
+
+func (c *Conn) Upstream() any {
+	return c.Conn
+}
+
+func (c *Conn) UpstreamWriter() any {
+	return c.NetConn()
+}

common/badtls/badtls_stub.go

@@ -0,0 +1,12 @@
+//go:build !go1.19 || go1.20
+
+package badtls
+
+import (
+	"crypto/tls"
+	"os"
+)
+
+func Create(conn *tls.Conn) (TLSConn, error) {
+	return nil, os.ErrInvalid
+}

common/badtls/conn.go

@@ -0,0 +1,13 @@
+package badtls
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+)
+
+type TLSConn interface {
+	net.Conn
+	HandshakeContext(ctx context.Context) error
+	ConnectionState() tls.ConnectionState
+}

common/badtls/link.go

@@ -0,0 +1,26 @@
+//go:build go1.19 && !go.1.20
+
+package badtls
+
+import (
+	"crypto/tls"
+	"reflect"
+	_ "unsafe"
+)
+
+const (
+	maxPlaintext    = 16384 // maximum plaintext payload length
+	recordHeaderLen = 5     // record header length
+)
+
+//go:linkname errShutdown crypto/tls.errShutdown
+var errShutdown error
+
+//go:linkname handshakeComplete crypto/tls.(*Conn).handshakeComplete
+func handshakeComplete(conn *tls.Conn) bool
+
+//go:linkname incSeq crypto/tls.(*halfConn).incSeq
+func incSeq(conn uintptr)
+
+//go:linkname valueInterface reflect.valueInterface
+func valueInterface(v reflect.Value, safe bool) any

common/dialer/default.go

@@ -15,7 +15,7 @@ import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
-	"github.com/database64128/tfo-go"
+	"github.com/database64128/tfo-go/v2"
 )
 
 var warnBindInterfaceOnUnsupportedPlatform = warning.New(
@@ -110,7 +110,13 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 	if options.TCPFastOpen {
 		warnTFOOnUnsupportedPlatform.Check()
 	}
-	if !options.UDPFragment {
+	var udpFragment bool
+	if options.UDPFragment != nil {
+		udpFragment = *options.UDPFragment
+	} else {
+		udpFragment = options.UDPFragmentDefault
+	}
+	if !udpFragment {
 		dialer.Control = control.Append(dialer.Control, control.DisableUDPFragment())
 		listener.Control = control.Append(listener.Control, control.DisableUDPFragment())
 	}
@@ -140,7 +146,7 @@ func (d *DefaultDialer) DialContext(ctx context.Context, network string, address
 	case N.NetworkUDP:
 		return d.udpDialer.DialContext(ctx, network, address.String())
 	}
-	return d.dialer.DialContext(ctx, network, address.Unwrap().String())
+	return DialSlowContext(&d.dialer, ctx, network, address)
 }
 
 func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {

common/dialer/tfo.go

@@ -0,0 +1,135 @@
+package dialer
+
+import (
+	"context"
+	"io"
+	"net"
+	"os"
+	"time"
+
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/bufio"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	"github.com/database64128/tfo-go/v2"
+)
+
+type slowOpenConn struct {
+	dialer      *tfo.Dialer
+	ctx         context.Context
+	network     string
+	destination M.Socksaddr
+	conn        net.Conn
+	create      chan struct{}
+	err         error
+}
+
+func DialSlowContext(dialer *tfo.Dialer, ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	if dialer.DisableTFO || N.NetworkName(network) != N.NetworkTCP {
+		return dialer.DialContext(ctx, network, destination.String(), nil)
+	}
+	return &slowOpenConn{
+		dialer:      dialer,
+		ctx:         ctx,
+		network:     network,
+		destination: destination,
+		create:      make(chan struct{}),
+	}, nil
+}
+
+func (c *slowOpenConn) Read(b []byte) (n int, err error) {
+	if c.conn == nil {
+		select {
+		case <-c.create:
+			if c.err != nil {
+				return 0, c.err
+			}
+		case <-c.ctx.Done():
+			return 0, c.ctx.Err()
+		}
+	}
+	return c.conn.Read(b)
+}
+
+func (c *slowOpenConn) Write(b []byte) (n int, err error) {
+	if c.conn == nil {
+		c.conn, err = c.dialer.DialContext(c.ctx, c.network, c.destination.String(), b)
+		c.err = err
+		close(c.create)
+		return
+	}
+	return c.conn.Write(b)
+}
+
+func (c *slowOpenConn) Close() error {
+	return common.Close(c.conn)
+}
+
+func (c *slowOpenConn) LocalAddr() net.Addr {
+	if c.conn == nil {
+		return M.Socksaddr{}
+	}
+	return c.conn.LocalAddr()
+}
+
+func (c *slowOpenConn) RemoteAddr() net.Addr {
+	if c.conn == nil {
+		return M.Socksaddr{}
+	}
+	return c.conn.RemoteAddr()
+}
+
+func (c *slowOpenConn) SetDeadline(t time.Time) error {
+	if c.conn == nil {
+		return os.ErrInvalid
+	}
+	return c.conn.SetDeadline(t)
+}
+
+func (c *slowOpenConn) SetReadDeadline(t time.Time) error {
+	if c.conn == nil {
+		return os.ErrInvalid
+	}
+	return c.conn.SetReadDeadline(t)
+}
+
+func (c *slowOpenConn) SetWriteDeadline(t time.Time) error {
+	if c.conn == nil {
+		return os.ErrInvalid
+	}
+	return c.conn.SetWriteDeadline(t)
+}
+
+func (c *slowOpenConn) Upstream() any {
+	return c.conn
+}
+
+func (c *slowOpenConn) ReaderReplaceable() bool {
+	return c.conn != nil
+}
+
+func (c *slowOpenConn) WriterReplaceable() bool {
+	return c.conn != nil
+}
+
+func (c *slowOpenConn) ReadFrom(r io.Reader) (n int64, err error) {
+	if c.conn != nil {
+		return bufio.Copy(c.conn, r)
+	}
+	return bufio.ReadFrom0(c, r)
+}
+
+func (c *slowOpenConn) WriteTo(w io.Writer) (n int64, err error) {
+	if c.conn == nil {
+		select {
+		case <-c.create:
+			if c.err != nil {
+				return 0, c.err
+			}
+		case <-c.ctx.Done():
+			return 0, c.ctx.Err()
+		}
+	}
+	return bufio.Copy(w, c.conn)
+}

common/mux/client.go

@@ -466,10 +466,7 @@ func (c *ClientPacketAddrConn) ReadPacket(buffer *buf.Buffer) (destination M.Soc
 	if err != nil {
 		return
 	}
-	if buffer.FreeLen() < int(length) {
+	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
-		return destination, io.ErrShortBuffer
-	}
-	_, err = io.ReadFull(c.ExtendedConn, buffer.Extend(int(length)))
 	return
 }
 

common/mux/service.go

@@ -3,7 +3,6 @@ package mux
 import (
 	"context"
 	"encoding/binary"
-	"io"
 	"net"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -15,6 +14,7 @@ import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/common/rw"
+	"github.com/sagernet/sing/common/task"
 )
 
 func NewConnection(ctx context.Context, router adapter.Router, errorHandler E.Handler, logger log.ContextLogger, conn net.Conn, metadata adapter.InboundContext) error {
@@ -26,14 +26,21 @@ func NewConnection(ctx context.Context, router adapter.Router, errorHandler E.Ha
 	if err != nil {
 		return err
 	}
-	var stream net.Conn
+	var group task.Group
-	for {
+	group.Append0(func(ctx context.Context) error {
-		stream, err = session.Accept()
+		var stream net.Conn
-		if err != nil {
+		for {
-			return err
+			stream, err = session.Accept()
+			if err != nil {
+				return err
+			}
+			go newConnection(ctx, router, errorHandler, logger, stream, metadata)
 		}
-		go newConnection(ctx, router, errorHandler, logger, stream, metadata)
+	})
-	}
+	group.Cleanup(func() {
+		session.Close()
+	})
+	return group.Run(ctx)
 }
 
 func newConnection(ctx context.Context, router adapter.Router, errorHandler E.Handler, logger log.ContextLogger, stream net.Conn, metadata adapter.InboundContext) {
@@ -158,9 +165,6 @@ func (c *ServerPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksad
 	if err != nil {
 		return
 	}
-	if buffer.FreeLen() < int(length) {
-		return destination, io.ErrShortBuffer
-	}
 	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
 	if err != nil {
 		return
@@ -223,9 +227,6 @@ func (c *ServerPacketAddrConn) ReadPacket(buffer *buf.Buffer) (destination M.Soc
 	if err != nil {
 		return
 	}
-	if buffer.FreeLen() < int(length) {
-		return destination, io.ErrShortBuffer
-	}
 	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
 	if err != nil {
 		return

common/process/searcher.go

@@ -28,11 +28,5 @@ type Info struct {
 }
 
 func FindProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
-	info, err := findProcessInfo(searcher, ctx, network, source, destination)
+	return findProcessInfo(searcher, ctx, network, source, destination)
-	if err != nil {
-		if source.Addr().Is4In6() {
-			info, err = findProcessInfo(searcher, ctx, network, netip.AddrPortFrom(netip.AddrFrom4(source.Addr().As4()), source.Port()), destination)
-		}
-	}
-	return info, err
 }

common/proxyproto/listener.go

@@ -36,8 +36,8 @@ func (l *Listener) Accept() (net.Conn, error) {
 	}
 	if header != nil {
 		return &bufio.AddrConn{Conn: conn, Metadata: M.Metadata{
-			Source:      M.SocksaddrFromNet(header.SourceAddr),
+			Source:      M.SocksaddrFromNet(header.SourceAddr).Unwrap(),
-			Destination: M.SocksaddrFromNet(header.DestinationAddr),
+			Destination: M.SocksaddrFromNet(header.DestinationAddr).Unwrap(),
 		}}, nil
 	}
 	return conn, nil

common/redir/tproxy_linux.go

@@ -2,14 +2,11 @@ package redir
 
 import (
 	"encoding/binary"
-	"net"
 	"net/netip"
-	"os"
-	"strconv"
 	"syscall"
 
+	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
-	F "github.com/sagernet/sing/common/format"
 	M "github.com/sagernet/sing/common/metadata"
 
 	"golang.org/x/sys/unix"
@@ -32,6 +29,18 @@ func TProxy(fd uintptr, isIPv6 bool) error {
 	return err
 }
 
+func TProxyWriteBack() control.Func {
+	return func(network, address string, conn syscall.RawConn) error {
+		return control.Raw(conn, func(fd uintptr) error {
+			if M.ParseSocksaddr(address).Addr.Is6() {
+				return syscall.SetsockoptInt(int(fd), syscall.SOL_IPV6, unix.IPV6_TRANSPARENT, 1)
+			} else {
+				return syscall.SetsockoptInt(int(fd), syscall.SOL_IP, syscall.IP_TRANSPARENT, 1)
+			}
+		})
+	}
+}
+
 func GetOriginalDestinationFromOOB(oob []byte) (netip.AddrPort, error) {
 	controlMessages, err := unix.ParseSocketControlMessage(oob)
 	if err != nil {
@@ -46,79 +55,3 @@ func GetOriginalDestinationFromOOB(oob []byte) (netip.AddrPort, error) {
 	}
 	return netip.AddrPort{}, E.New("not found")
 }
-
-func DialUDP(lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPConn, error) {
-	rSockAddr, err := udpAddrToSockAddr(rAddr)
-	if err != nil {
-		return nil, err
-	}
-
-	lSockAddr, err := udpAddrToSockAddr(lAddr)
-	if err != nil {
-		return nil, err
-	}
-
-	fd, err := syscall.Socket(udpAddrFamily(lAddr, rAddr), syscall.SOCK_DGRAM, 0)
-	if err != nil {
-		return nil, err
-	}
-
-	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
-	}
-
-	fdFile := os.NewFile(uintptr(fd), F.ToString("net-udp-dial-", rAddr))
-	defer fdFile.Close()
-
-	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 udpAddrFamily(lAddr, rAddr *net.UDPAddr) int {
-	if (lAddr == nil || lAddr.IP.To4() != nil) && (rAddr == nil || lAddr.IP.To4() != nil) {
-		return syscall.AF_INET
-	}
-	return syscall.AF_INET6
-}

common/redir/tproxy_other.go

@@ -3,19 +3,20 @@
 package redir
 
 import (
-	"net"
 	"net/netip"
 	"os"
+
+	"github.com/sagernet/sing/common/control"
 )
 
 func TProxy(fd uintptr, isIPv6 bool) error {
 	return os.ErrInvalid
 }
 
+func TProxyWriteBack() control.Func {
+	return nil
+}
+
 func GetOriginalDestinationFromOOB(oob []byte) (netip.AddrPort, error) {
 	return netip.AddrPort{}, os.ErrInvalid
 }
-
-func DialUDP(lAddr *net.UDPAddr, rAddr *net.UDPAddr) (*net.UDPConn, error) {
-	return nil, os.ErrInvalid
-}

common/sniff/dns.go

@@ -11,6 +11,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/buf"
+	M "github.com/sagernet/sing/common/metadata"
 	"github.com/sagernet/sing/common/task"
 
 	mDNS "github.com/miekg/dns"
@@ -49,5 +50,8 @@ func DomainNameQuery(ctx context.Context, packet []byte) (*adapter.InboundContex
 	if err != nil {
 		return nil, err
 	}
+	if len(msg.Question) == 0 || msg.Question[0].Qclass != mDNS.ClassINET || !M.IsDomainName(msg.Question[0].Name) {
+		return nil, os.ErrInvalid
+	}
 	return &adapter.InboundContext{Protocol: C.ProtocolDNS}, nil
 }

common/sniff/domain.go

@@ -1,6 +0,0 @@
-package sniff
-
-import _ "unsafe" // for linkname
-
-//go:linkname IsDomainName net.isDomainName
-func IsDomainName(domain string) bool

common/tls/client.go

@@ -2,10 +2,12 @@ package tls
 
 import (
 	"context"
+	"crypto/tls"
 	"net"
 	"os"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/badtls"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
 	M "github.com/sagernet/sing/common/metadata"
@@ -35,7 +37,17 @@ func ClientHandshake(ctx context.Context, conn net.Conn, config Config) (Conn, e
 	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
 	defer cancel()
 	err := tlsConn.HandshakeContext(ctx)
-	return tlsConn, err
+	if err != nil {
+		return nil, err
+	}
+	if stdConn, isSTD := tlsConn.(*tls.Conn); isSTD {
+		var badConn badtls.TLSConn
+		badConn, err = badtls.Create(stdConn)
+		if err == nil {
+			return badConn, nil
+		}
+	}
+	return tlsConn, nil
 }
 
 type Dialer struct {

common/tls/ech_client.go

@@ -165,8 +165,6 @@ func newECHClient(router adapter.Router, serverAddress string, options option.Ou
 	return &echClientConfig{&tlsConfig}, nil
 }
 
-const typeHTTPS = 65
-
 func fetchECHClientConfig(router adapter.Router) func(ctx context.Context, serverName string) ([]cftls.ECHConfig, error) {
 	return func(ctx context.Context, serverName string) ([]cftls.ECHConfig, error) {
 		message := &mDNS.Msg{

common/tls/mkcert.go

@@ -0,0 +1,50 @@
+package tls
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"time"
+)
+
+func GenerateKeyPair(serverName string) (*tls.Certificate, error) {
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return nil, err
+	}
+	serialNumber, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 128))
+	if err != nil {
+		return nil, err
+	}
+	template := &x509.Certificate{
+		SerialNumber:          serialNumber,
+		NotBefore:             time.Now().Add(time.Hour * -1),
+		NotAfter:              time.Now().Add(time.Hour),
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+		Subject: pkix.Name{
+			CommonName: serverName,
+		},
+		DNSNames: []string{serverName},
+	}
+	publicDer, err := x509.CreateCertificate(rand.Reader, template, template, key.Public(), key)
+	if err != nil {
+		return nil, err
+	}
+	privateDer, err := x509.MarshalPKCS8PrivateKey(key)
+	if err != nil {
+		return nil, err
+	}
+	publicPem := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: publicDer})
+	privPem := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: privateDer})
+	keyPair, err := tls.X509KeyPair(publicPem, privPem)
+	if err != nil {
+		return nil, err
+	}
+	return &keyPair, err
+}

common/tls/server.go

@@ -2,7 +2,11 @@ package tls
 
 import (
 	"context"
+	"crypto/tls"
+	"net"
 
+	"github.com/sagernet/sing-box/common/badtls"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 )
@@ -10,3 +14,21 @@ import (
 func NewServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
 	return newSTDServer(ctx, logger, options)
 }
+
+func ServerHandshake(ctx context.Context, conn net.Conn, config ServerConfig) (Conn, error) {
+	tlsConn := config.Server(conn)
+	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
+	defer cancel()
+	err := tlsConn.HandshakeContext(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if stdConn, isSTD := tlsConn.(*tls.Conn); isSTD {
+		var badConn badtls.TLSConn
+		badConn, err = badtls.Create(stdConn)
+		if err == nil {
+			return badConn, nil
+		}
+	}
+	return tlsConn, nil
+}

common/tls/std_server.go

@@ -34,6 +34,8 @@ func (c *STDServerConfig) SetNextProtos(nextProto []string) {
 	c.config.NextProtos = nextProto
 }
 
+var errInsecureUnused = E.New("tls: insecure unused")
+
 func newSTDServer(ctx context.Context, logger log.Logger, options option.InboundTLSOptions) (ServerConfig, error) {
 	if !options.Enabled {
 		return nil, nil
@@ -43,9 +45,13 @@ func newSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 	var err error
 	if options.ACME != nil && len(options.ACME.Domain) > 0 {
 		tlsConfig, acmeService, err = startACME(ctx, common.PtrValueOrDefault(options.ACME))
+		//nolint:staticcheck
 		if err != nil {
 			return nil, err
 		}
+		if options.Insecure {
+			return nil, errInsecureUnused
+		}
 	} else {
 		tlsConfig = &tls.Config{}
 	}
@@ -102,17 +108,23 @@ func newSTDServer(ctx context.Context, logger log.Logger, options option.Inbound
 			}
 			key = content
 		}
-		if certificate == nil {
+		if certificate == nil && key == nil && options.Insecure {
-			return nil, E.New("missing certificate")
+			tlsConfig.GetCertificate = func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
+				return GenerateKeyPair(info.ServerName)
+			}
+		} else {
+			if certificate == nil {
+				return nil, E.New("missing certificate")
+			} else if key == nil {
+				return nil, E.New("missing key")
+			}
+
+			keyPair, err := tls.X509KeyPair(certificate, key)
+			if err != nil {
+				return nil, E.Cause(err, "parse x509 key pair")
+			}
+			tlsConfig.Certificates = []tls.Certificate{keyPair}
 		}
-		if key == nil {
-			return nil, E.New("missing key")
-		}
-		keyPair, err := tls.X509KeyPair(certificate, key)
-		if err != nil {
-			return nil, E.Cause(err, "parse x509 key pair")
-		}
-		tlsConfig.Certificates = []tls.Certificate{keyPair}
 	}
 	return &STDServerConfig{
 		config:          tlsConfig,

constant/err.go

@@ -3,3 +3,5 @@ package constant
 import E "github.com/sagernet/sing/common/exceptions"
 
 var ErrTLSRequired = E.New("TLS required")
+
+var ErrQUICNotIncluded = E.New(`QUIC is not included in this build, rebuild with -tags with_quic`)

constant/proxy.go

@@ -25,4 +25,5 @@ const (
 
 const (
 	TypeSelector = "selector"
+	TypeURLTest  = "urltest"
 )

constant/timeout.go

@@ -3,10 +3,11 @@ package constant
 import "time"
 
 const (
-	TCPTimeout         = 5 * time.Second
+	TCPTimeout             = 5 * time.Second
-	ReadPayloadTimeout = 300 * time.Millisecond
+	ReadPayloadTimeout     = 300 * time.Millisecond
-	DNSTimeout         = 10 * time.Second
+	DNSTimeout             = 10 * time.Second
-	QUICTimeout        = 30 * time.Second
+	QUICTimeout            = 30 * time.Second
-	STUNTimeout        = 15 * time.Second
+	STUNTimeout            = 15 * time.Second
-	UDPTimeout         = 5 * time.Minute
+	UDPTimeout             = 5 * time.Minute
+	DefaultURLTestInterval = 1 * time.Minute
 )

constant/version.go

@@ -1,3 +1,3 @@
 package constant
 
-var Version = "1.1-beta5"
+var Version = "1.1-beta9"

docs/changelog.md

@@ -1,3 +1,49 @@
+#### 1.1-beta9
+
+* Fix windows route **1**
+* Add [v2ray statistics api](/configuration/experimental#v2ray-api-fields)
+* Add ShadowTLS v2 support **2**
+* Fixes and improvements
+
+**1**:
+
+* Fix DNS leak caused by
+  Windows' [ordinary multihomed DNS resolution behavior](https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd197552%28v%3Dws.10%29)
+* Flush Windows DNS cache when start/close
+
+**2**:
+
+See [ShadowTLS inbound](/configuration/inbound/shadowtls#version) and [ShadowTLS outbound](/configuration/outbound/shadowtls#version)
+
+#### 1.1-beta8
+
+* Fix leaks on close
+* Improve websocket writer
+* Refine tproxy write back
+* Refine 4in6 processing
+* Fix shadowsocks plugins
+* Fix missing source address from transport connection
+* Fix fqdn socks5 outbound connection
+* Fix read source address from grpc-go
+
+#### 1.0.5
+
+* Fix missing source address from transport connection
+* Fix fqdn socks5 outbound connection
+* Fix read source address from grpc-go
+
+#### 1.1-beta7
+
+* Add v2ray mux and XUDP support for VMess inbound
+* Add XUDP support for VMess outbound
+* Disable DF on direct outbound by default
+* Fix bugs in 1.1-beta6
+
+#### 1.1-beta6
+
+* Add [URLTest outbound](/configuration/outbound/urltest)
+* Fix bugs in 1.1-beta5
+
 #### 1.1-beta5
 
 * Print tags in version command

docs/configuration/experimental/index.md

@@ -9,24 +9,39 @@
       "external_controller": "127.0.0.1:9090",
       "external_ui": "folder",
       "secret": "",
+      "direct_io": false,
       "default_mode": "rule",
       "store_selected": false,
       "cache_file": "cache.db"
+    },
+    "v2ray_api": {
+      "listen": "127.0.0.1:8080",
+      "stats": {
+        "enabled": true,
+        "direct_io": false,
+        "inbounds": [
+          "socks-in"
+        ],
+        "outbounds": [
+          "proxy",
+          "direct"
+        ]
+      }
     }
   }
 }
 ```
 
+!!! note ""
+
+    Traffic statistics and connection management can degrade performance.
+
 ### Clash API Fields
 
 !!! error ""
 
     Clash API is not included by default, see [Installation](/#installation).
 
-!!! note ""
-
-    Traffic statistics and connection management will disable TCP splice in linux and reduce performance, use at your own risk.
-
 #### external_controller
 
 RESTful web API listening address. Clash API will be disabled if empty.
@@ -43,6 +58,10 @@ Secret for the RESTful API (optional)
 Authenticate by spedifying HTTP header `Authorization: Bearer ${secret}`
 ALWAYS set a secret if RESTful API is listening on 0.0.0.0
 
+#### direct_io
+
+Allows lossless relays like splice without real-time traffic reporting.
+
 #### default_mode
 
 Default mode in clash, `rule` will be used if empty.
@@ -59,4 +78,34 @@ Store selected outbound for the `Selector` outbound in cache file.
 
 #### cache_file
 
-Cache file path, `cache.db` will be used if empty.
+Cache file path, `cache.db` will be used if empty.
+
+### V2Ray API Fields
+
+!!! error ""
+
+    V2Ray API is not included by default, see [Installation](/#installation).
+
+#### listen
+
+gRPC API listening address. V2Ray API will be disabled if empty.
+
+#### stats
+
+Traffic statistics service settings.
+
+#### stats.enabled
+
+Enable statistics service.
+
+#### stats.direct_io
+
+Allows lossless relays like splice without real-time traffic reporting.
+
+#### stats.inbounds
+
+Inbound list to count traffic.
+
+#### stats.outbounds
+
+Outbound list to count traffic.

docs/configuration/experimental/index.zh.md

@@ -9,24 +9,39 @@
       "external_controller": "127.0.0.1:9090",
       "external_ui": "folder",
       "secret": "",
+      "direct_io": false,
       "default_mode": "rule",
       "store_selected": false,
       "cache_file": "cache.db"
+    },
+    "v2ray_api": {
+      "listen": "127.0.0.1:8080",
+      "stats": {
+        "enabled": true,
+        "direct_io": false,
+        "inbounds": [
+          "socks-in"
+        ],
+        "outbounds": [
+          "proxy",
+          "direct"
+        ]
+      }
     }
   }
 }
 ```
 
+!!! note ""
+
+    流量统计和连接管理会降低性能。
+
 ### Clash API 字段
 
 !!! error ""
 
     默认安装不包含 Clash API，参阅 [安装](/zh/#_2)。
 
-!!! note ""
-
-    流量统计和连接管理将禁用 Linux 中的 TCP splice 并降低性能，使用风险自负。
-
 #### external_controller
 
 RESTful web API 监听地址。如果为空，则禁用 Clash API。
@@ -41,6 +56,10 @@ RESTful API 的密钥（可选）
 通过指定 HTTP 标头 `Authorization: Bearer ${secret}` 进行身份验证
 如果 RESTful API 正在监听 0.0.0.0，请始终设置一个密钥。
 
+#### direct_io
+
+允许像 splice 这样的没有实时流量报告的无损中继。
+
 #### default_mode
 
 Clash 中的默认模式，默认使用 `rule`。
@@ -57,4 +76,34 @@ Clash 中的默认模式，默认使用 `rule`。
 
 #### cache_file
 
-缓存文件路径，默认使用`cache.db`。
+缓存文件路径，默认使用`cache.db`。
+
+### V2Ray API 字段
+
+!!! error ""
+
+    默认安装不包含 V2Ray API，参阅 [安装](/zh/#_2)。
+
+#### listen
+
+gRPC API 监听地址。如果为空，则禁用 V2Ray API。
+
+#### stats
+
+流量统计服务设置。
+
+#### stats.enabled
+
+启用统计服务。
+
+#### stats.direct_io
+
+允许像 splice 这样的没有实时流量报告的无损中继。
+
+#### stats.inbounds
+
+统计流量的入站列表。
+
+#### stats.outbounds
+
+统计流量的出站列表。

docs/configuration/inbound/shadowtls.md

@@ -7,6 +7,8 @@
 
   ... // Listen Fields
 
+  "version": 2,
+  "password": "fuck me till the daylight",
   "handshake": {
     "server": "google.com",
     "server_port": 443,
@@ -20,12 +22,25 @@
 
 See [Listen Fields](/configuration/shared/listen) for details.
 
-
 ### Fields
 
+#### version
+
+ShadowTLS protocol version.
+
+| Value         | Protocol Version                                                                        |
+|---------------|-----------------------------------------------------------------------------------------|
+| `1` (default) | [ShadowTLS v1](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v1) |
+| `2`           | [ShadowTLS v2](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v2) |
+
+#### password
+
+Set password.
+
+Only available in the ShadowTLS v2 protocol.
+
 #### handshake
 
 ==Required==
 
-Handshake server address and [dial options](/configuration/shared/dial).
+Handshake server address and [Dial options](/configuration/shared/dial).
-

docs/configuration/inbound/shadowtls.zh.md

@@ -7,6 +7,8 @@
 
   ... // 监听字段
 
+  "version": 2,
+  "password": "fuck me till the daylight",
   "handshake": {
     "server": "google.com",
     "server_port": 443,
@@ -22,6 +24,21 @@
 
 ### 字段
 
+#### version
+
+ShadowTLS 协议版本。
+
+| 值             | 协议版本                                                                                    |
+|---------------|-----------------------------------------------------------------------------------------|
+| `1` (default) | [ShadowTLS v1](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v1) |
+| `2`           | [ShadowTLS v2](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v2) |
+
+#### password
+
+设置密码。
+
+仅在 ShadowTLS v2 协议中可用。
+
 #### handshake
 
 ==必填==

docs/configuration/inbound/tun.md

@@ -8,7 +8,6 @@
 {
   "type": "tun",
   "tag": "tun-in",
-  
   "interface_name": "tun0",
   "inet4_address": "172.19.0.1/30",
   "inet6_address": "fdfe:dcba:9876::1/126",
@@ -39,8 +38,8 @@
   "exclude_package": [
     "com.android.captiveportallogin"
   ],
-
+  ...
-  ... // Listen Fields
+  // Listen Fields
 }
 ```
 
@@ -86,7 +85,9 @@ Set the default route to the Tun.
 
 #### strict_route
 
-Enforce strict routing rules in Linux when `auto_route` is enabled:
+*In Linux*:
+
+Enforce strict routing rules when `auto_route` is enabled:
 
 * Let unsupported network unreachable
 * Route all connections to tun
@@ -94,6 +95,10 @@ Enforce strict routing rules in Linux when `auto_route` is enabled:
 It prevents address leaks and makes DNS hijacking work on Android and Linux with systemd-resolved, but your device will
 not be accessible by others.
 
+*In Windows*:
+
+Use segmented `auto_route` routing settings, which may help if you're using a dial-up network.
+
 #### endpoint_independent_nat
 
 !!! info ""

docs/configuration/inbound/tun.zh.md

@@ -86,13 +86,19 @@ tun 接口的 IPv6 前缀。
 
 #### strict_route
 
-在 Linux 中启用 `auto_route` 时执行严格的路由规则。
+*在 Linux 中*:
+
+启用 `auto_route` 时执行严格的路由规则。
 
 * 让不支持的网络无法到达
 * 将所有连接路由到 tun
 
 它可以防止地址泄漏，并使 DNS 劫持在 Android 和使用 systemd-resolved 的 Linux 上工作，但你的设备将无法其他设备被访问。
 
+*在 Windows 中*:
+
+使用分段的 `auto_route` 路由设置，如果您使用的是拨号网络，这可能会有所帮助。
+
 #### endpoint_independent_nat
 
 启用独立于端点的 NAT。

docs/configuration/outbound/index.md

@@ -15,21 +15,24 @@
 
 ### Fields
 
-| Type          | Format                       |
+| Type           | Format                         |
-|---------------|------------------------------|
+|----------------|--------------------------------|
-| `direct`      | [Direct](./direct)           |
+| `direct`       | [Direct](./direct)             |
-| `block`       | [Block](./block)             |
+| `block`        | [Block](./block)               |
-| `socks`       | [SOCKS](./socks)             |
+| `socks`        | [SOCKS](./socks)               |
-| `http`        | [HTTP](./http)               |
+| `http`         | [HTTP](./http)                 |
-| `shadowsocks` | [Shadowsocks](./shadowsocks) |
+| `shadowsocks`  | [Shadowsocks](./shadowsocks)   |
-| `vmess`       | [VMess](./vmess)             |
+| `vmess`        | [VMess](./vmess)               |
-| `trojan`      | [Trojan](./trojan)           |
+| `trojan`       | [Trojan](./trojan)             |
-| `wireguard`   | [Wireguard](./wireguard)     |
+| `wireguard`    | [Wireguard](./wireguard)       |
-| `hysteria`    | [Hysteria](./hysteria)       |
+| `hysteria`     | [Hysteria](./hysteria)         |
-| `tor`         | [Tor](./tor)                 |
+| `shadowsocksr` | [ShadowsocksR](./shadowsocksr) |
-| `ssh`         | [SSH](./ssh)                 |
+| `vless`        | [VLESS](./vless)               |
-| `dns`         | [DNS](./dns)                 |
+| `tor`          | [Tor](./tor)                   |
-| `selector`    | [Selector](./selector)       |
+| `ssh`          | [SSH](./ssh)                   |
+| `dns`          | [DNS](./dns)                   |
+| `selector`     | [Selector](./selector)         |
+| `urltest`      | [URLTest](./urltest)           |
 
 #### tag
 

docs/configuration/outbound/index.zh.md

@@ -15,21 +15,24 @@
 
 ### 字段
 
-| 类型            | 格式                           |
+| 类型             | 格式                             |
-|---------------|------------------------------|
+|----------------|--------------------------------|
-| `direct`      | [Direct](./direct)           |
+| `direct`       | [Direct](./direct)             |
-| `block`       | [Block](./block)             |
+| `block`        | [Block](./block)               |
-| `socks`       | [SOCKS](./socks)             |
+| `socks`        | [SOCKS](./socks)               |
-| `http`        | [HTTP](./http)               |
+| `http`         | [HTTP](./http)                 |
-| `shadowsocks` | [Shadowsocks](./shadowsocks) |
+| `shadowsocks`  | [Shadowsocks](./shadowsocks)   |
-| `vmess`       | [VMess](./vmess)             |
+| `vmess`        | [VMess](./vmess)               |
-| `trojan`      | [Trojan](./trojan)           |
+| `trojan`       | [Trojan](./trojan)             |
-| `wireguard`   | [Wireguard](./wireguard)     |
+| `wireguard`    | [Wireguard](./wireguard)       |
-| `hysteria`    | [Hysteria](./hysteria)       |
+| `hysteria`     | [Hysteria](./hysteria)         |
-| `tor`         | [Tor](./tor)                 |
+| `shadowsocksr` | [ShadowsocksR](./shadowsocksr) |
-| `ssh`         | [SSH](./ssh)                 |
+| `vless`        | [VLESS](./vless)               |
-| `dns`         | [DNS](./dns)                 |
+| `tor`          | [Tor](./tor)                   |
-| `selector`    | [Selector](./selector)       |
+| `ssh`          | [SSH](./ssh)                   |
+| `dns`          | [DNS](./dns)                   |
+| `selector`     | [Selector](./selector)         |
+| `urltest`      | [URLTest](./urltest)           |
 
 #### tag
 

docs/configuration/outbound/shadowtls.md

@@ -7,6 +7,8 @@
   
   "server": "127.0.0.1",
   "server_port": 1080,
+  "version": 2,
+  "password": "fuck me till the daylight",
   "tls": {},
 
   ... // Dial Fields
@@ -27,6 +29,21 @@ The server address.
 
 The server port.
 
+#### version
+
+ShadowTLS protocol version.
+
+| Value         | Protocol Version                                                                        |
+|---------------|-----------------------------------------------------------------------------------------|
+| `1` (default) | [ShadowTLS v1](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v1) |
+| `2`           | [ShadowTLS v2](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v2) |
+
+#### password
+
+Set password.
+
+Only available in the ShadowTLS v2 protocol.
+
 #### tls
 
 ==Required==

docs/configuration/outbound/shadowtls.zh.md

@@ -7,6 +7,8 @@
   
   "server": "127.0.0.1",
   "server_port": 1080,
+  "version": 2,
+  "password": "fuck me till the daylight",
   "tls": {},
 
   ... // 拨号字段
@@ -27,6 +29,21 @@
 
 服务器端口。
 
+#### version
+
+ShadowTLS 协议版本。
+
+| 值             | 协议版本                                                                                    |
+|---------------|-----------------------------------------------------------------------------------------|
+| `1` (default) | [ShadowTLS v1](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v1) |
+| `2`           | [ShadowTLS v2](https://github.com/ihciah/shadow-tls/blob/master/docs/protocol-en.md#v2) |
+
+#### password
+
+设置密码。
+
+仅在 ShadowTLS v2 协议中可用。
+
 #### tls
 
 ==必填==

docs/configuration/outbound/urltest.md

@@ -0,0 +1,37 @@
+### Structure
+
+```json
+{
+  "type": "urltest",
+  "tag": "auto",
+  
+  "outbounds": [
+    "proxy-a",
+    "proxy-b",
+    "proxy-c"
+  ],
+  "url": "http://www.gstatic.com/generate_204",
+  "interval": "1m",
+  "tolerance": 50
+}
+```
+
+### Fields
+
+#### outbounds
+
+==Required==
+
+List of outbound tags to test.
+
+#### url
+
+The URL to test. `http://www.gstatic.com/generate_204` will be used if empty.
+
+#### interval
+
+The test interval. `1m` will be used if empty.
+
+#### tolerance
+
+The test tolerance in milliseconds. `50` will be used if empty.

docs/configuration/outbound/urltest.zh.md

@@ -0,0 +1,37 @@
+### 结构
+
+```json
+{
+  "type": "urltest",
+  "tag": "auto",
+  
+  "outbounds": [
+    "proxy-a",
+    "proxy-b",
+    "proxy-c"
+  ],
+  "url": "http://www.gstatic.com/generate_204",
+  "interval": "1m",
+  "tolerance": 50
+}
+```
+
+### 字段
+
+#### outbounds
+
+==必填==
+
+用于测试的出站标签列表。
+
+#### url
+
+用于测试的链接。默认使用 `http://www.gstatic.com/generate_204`。
+
+#### interval
+
+测试间隔。 默认使用 `1m`。
+
+#### tolerance
+
+以毫秒为单位的测试容差。 默认使用 `50`。

docs/configuration/outbound/vmess.md

@@ -14,7 +14,7 @@
   "authenticated_length": true,
   "network": "tcp",
   "tls": {},
-  "packet_addr": false,
+  "packet_encoding": "",
   "multiplex": {},
   "transport": {},
 
@@ -84,9 +84,13 @@ Both is enabled by default.
 
 TLS configuration, see [TLS](/configuration/shared/tls/#outbound).
 
-#### packet_addr
+#### packet_encoding
 
-Enable packetaddr support.
+| Encoding   | Description           |
+|------------|-----------------------|
+| (none)     | Disabled              |
+| packetaddr | Supported by v2ray 5+ |
+| xudp       | Supported by xray     |
 
 #### multiplex
 

docs/configuration/outbound/vmess.zh.md

@@ -14,7 +14,7 @@
   "authenticated_length": true,
   "network": "tcp",
   "tls": {},
-  "packet_addr": false,
+  "packet_encoding": "",
   "multiplex": {},
   "transport": {},
 
@@ -84,9 +84,13 @@ VMess 用户 ID。
 
 TLS 配置, 参阅 [TLS](/zh/configuration/shared/tls/#outbound)。
 
-#### packet_addr
+#### packet_encoding
 
-启用 packetaddr 支持。
+| 编码         | 描述            |
+|------------|---------------|
+| (空)        | 禁用            |
+| packetaddr | 由 v2ray 5+ 支持 |
+| xudp       | 由 xray 支持     |
 
 #### multiplex
 

docs/features.md

@@ -95,7 +95,9 @@
 | cn                | 17.8M    | 140.3M     |
 | cn (Loyalsoldier) | 74.3M    | 246.7M     |
 
-#### Shadowsocks benchmark
+#### Benchmark
+
+##### Shadowsocks
 
 | /                                  |   none    | aes-128-gcm | 2022-blake3-aes-128-gcm |
 |------------------------------------|:---------:|:-----------:|:-----------------------:|
@@ -103,6 +105,13 @@
 | shadowsocks-rust (v1.15.0-alpha.5) | 10.7 Gbps |      /      |        9.36 Gbps        |
 | sing-box                           | 29.0 Gbps |      /      |        11.8 Gbps        |
 
+##### VMess
+
+| /                  |    TCP    |   HTTP    |  H2 TLS   | WebSocket TLS | gRPC TLS  |
+|--------------------|:---------:|:---------:|:---------:|:-------------:|:---------:|
+| v2ray-core (5.1.0) | 7.86 GBps | 2.86 Gbps | 1.83 Gbps |   2.36 Gbps   | 2.43 Gbps |
+| sing-box           | 7.96 Gbps | 8.09 Gbps | 6.11 Gbps |   8.02 Gbps   | 6.35 Gbps |
+
 #### License
 
 | /          | License                           |

docs/index.md

@@ -32,6 +32,7 @@ go install -v -tags with_clash_api github.com/sagernet/sing-box/cmd/sing-box@lat
 | `with_utls`                        | Build with [uTLS](https://github.com/refraction-networking/utls) support for TLS outbound, see [TLS](./configuration/shared/tls#utls).                                                                                                                                                                                          |
 | `with_acme`                        | Build with ACME TLS certificate issuer support, see [TLS](./configuration/shared/tls).                                                                                                                                                                                                                                          |
 | `with_clash_api`                   | Build with Clash API support, see [Experimental](./configuration/experimental#clash-api-fields).                                                                                                                                                                                                                                |
+| `with_v2ray_api`                   | Build with V2Ray API support, see [Experimental](./configuration/experimental#v2ray-api-fields).                                                                                                                                                                                                                                |
 | `with_gvisor`                      | Build with gVisor support, see [Tun inbound](./configuration/inbound/tun#stack) and [WireGuard outbound](./configuration/outbound/wireguard#system_interface).                                                                                                                                                                  |
 | `with_embedded_tor` (CGO required) | Build with embedded Tor support, see [Tor outbound](./configuration/outbound/tor).                                                                                                                                                                                                                                              |
 | `with_lwip` (CGO required)         | Build with LWIP Tun stack support, see [Tun inbound](./configuration/inbound/tun#stack).                                                                                                                                                                                                                                        |
@@ -45,10 +46,6 @@ sing-box version
 It is also recommended to use systemd to manage sing-box service,
 see [Linux server installation example](./examples/linux-server-installation).
 
-## Contributors
-
-[![](https://opencollective.com/sagernet/contributors.svg?width=740&button=false)](https://github.com/sagernet/sing-box/graphs/contributors)
-
 ## License
 
 ```

docs/index.zh.md

@@ -25,13 +25,14 @@ go install -v -tags with_clash_api github.com/sagernet/sing-box/cmd/sing-box@lat
 | 构建标志                         | 描述                                                                                                                                                                                                                                                                           |
 |------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `with_quic`                  | 启用 QUIC 支持，参阅 [QUIC 和 HTTP3 DNS 传输层](./configuration/dns/server)，[Naive 入站](./configuration/inbound/naive)，[Hysteria 入站](./configuration/inbound/hysteria)，[Hysteria 出站](./configuration/outbound/hysteria) 和 [V2Ray 传输层#QUIC](./configuration/shared/v2ray-transport#quic)。 |
-| `with_grpc`                  | 启用标准 gRPCuTLS](https://github.com/refraction-networking/utls) 支持， 参阅 [TLS](./configuration/shared/tls#utls)。                                                                                                                                                                      |
+| `with_grpc`                  | 启用标准 gRPC 支持，参阅 [V2Ray 传输层#gRPC](./configuration/shared/v2ray-transport#grpc)。                                                                                                                                                                                               |
-| `with_acme`                  | 启用 ACME TLS 证书签发支持，参阅 [TLS](./configuration/shared/tls)。                                                                                                                                                                                                                     |
-| `with_clash_api`             | 启用 Clash api 支 支持，参阅 [V2Ray 传输层#gRPC](./configuration/shared/v2ray-transport#grpc)。                                                                                                                                                                                               |
 | `with_wireguard`             | 启用 WireGuard 支持，参阅 [WireGuard 出站](./configuration/outbound/wireguard)。                                                                                                                                                                                                       |
 | `with_shadowsocksr`          | 启用 ShadowsocksR 支持，参阅 [ShadowsocksR 出站](./configuration/outbound/shadowsocksr)。                                                                                                                                                                                              |
 | `with_ech`                   | 启用 TLS ECH 扩展支持，参阅 [TLS](./configuration/shared/tls#ech)。                                                                                                                                                                                                                    |
-| `with_utls`                  | 启用 [持，参阅 [实验性](./configuration/experimental#clash-api-fields)。                                                                                                                                                                                                     |
+| `with_utls`                  | 启用 uTLS 支持，参阅 [实验性](./configuration/experimental#clash-api-fields)。                                                                                                                                                                                                          |
+| `with_acme`                  | 启用 ACME TLS 证书签发支持，参阅 [TLS](./configuration/shared/tls)。                                                                                                                                                                                                                     |
+| `with_clash_api`             | 启用 Clash API 支持，参阅 [实验性](./configuration/experimental#clash-api-fields)。                                                                                                                                                                                                     |
+| `with_v2ray_api`             | 启用 V2Rat API 支持，参阅 [实验性](./configuration/experimental#v2ray-api-fields)。                                                                                                                                                                                                     |
 | `with_gvisor`                | 启用 gVisor 支持，参阅 [Tun 入站](./configuration/inbound/tun#stack) 和 [WireGuard 出站](./configuration/outbound/wireguard#system_interface)。                                                                                                                                           |
 | `with_embedded_tor` (需要 CGO) | 启用 嵌入式 Tor 支持，参阅 [Tor 出站](./configuration/outbound/tor)。                                                                                                                                                                                                                     |
 | `with_lwip` (需要 CGO)         | 启用 LWIP Tun 栈支持，参阅 [Tun 入站](./configuration/inbound/tun#stack)。                                                                                                                                                                                                              |
@@ -42,13 +43,9 @@ go install -v -tags with_clash_api github.com/sagernet/sing-box/cmd/sing-box@lat
 sing-box version
 ```
 
-同时推荐使用 Systemd 来管理 sing-box 服务器实例。
+同时推荐使用 systemd 来管理 sing-box 服务器实例。
 参阅 [Linux 服务器安装示例](./examples/linux-server-installation)。
 
-## 贡献者
-
-[![](https://opencollective.com/sagernet/contributors.svg?width=740&button=false)](https://github.com/sagernet/sing-box/graphs/contributors)
-
 ## 授权
 
 ```

experimental/clashapi.go

@@ -1,14 +1,24 @@
-//go:build with_clash_api
-
 package experimental
 
 import (
+	"os"
+
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/experimental/clashapi"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 )
 
-func NewClashServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
+type ClashServerConstructor = func(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error)
-	return clashapi.NewServer(router, logFactory, options)
+
+var clashServerConstructor ClashServerConstructor
+
+func RegisterClashServerConstructor(constructor ClashServerConstructor) {
+	clashServerConstructor = constructor
+}
+
+func NewClashServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
+	if clashServerConstructor == nil {
+		return nil, os.ErrInvalid
+	}
+	return clashServerConstructor(router, logFactory, options)
 }

experimental/clashapi/proxies.go

@@ -61,7 +61,6 @@ func findProxyByName(router adapter.Router) func(next http.Handler) http.Handler
 func proxyInfo(server *Server, detour adapter.Outbound) *badjson.JSONObject {
 	var info badjson.JSONObject
 	var clashType string
-	var isGroup bool
 	switch detour.Type() {
 	case C.TypeDirect:
 		clashType = "Direct"
@@ -91,7 +90,8 @@ func proxyInfo(server *Server, detour adapter.Outbound) *badjson.JSONObject {
 		clashType = "SSH"
 	case C.TypeSelector:
 		clashType = "Selector"
-		isGroup = true
+	case C.TypeURLTest:
+		clashType = "URLTest"
 	default:
 		clashType = "Direct"
 	}
@@ -104,10 +104,9 @@ func proxyInfo(server *Server, detour adapter.Outbound) *badjson.JSONObject {
 	} else {
 		info.Put("history", []*urltest.History{})
 	}
-	if isGroup {
+	if group, isGroup := detour.(adapter.OutboundGroup); isGroup {
-		selector := detour.(adapter.OutboundGroup)
+		info.Put("now", group.Now())
-		info.Put("now", selector.Now())
+		info.Put("all", group.All())
-		info.Put("all", selector.All())
 	}
 	return &info
 }

experimental/clashapi/server.go

@@ -14,6 +14,7 @@ import (
 	"github.com/sagernet/sing-box/common/json"
 	"github.com/sagernet/sing-box/common/urltest"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental"
 	"github.com/sagernet/sing-box/experimental/clashapi/cachefile"
 	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
 	"github.com/sagernet/sing-box/log"
@@ -29,6 +30,10 @@ import (
 	"github.com/go-chi/render"
 )
 
+func init() {
+	experimental.RegisterClashServerConstructor(NewServer)
+}
+
 var _ adapter.ClashServer = (*Server)(nil)
 
 type Server struct {
@@ -38,12 +43,13 @@ type Server struct {
 	trafficManager *trafficontrol.Manager
 	urlTestHistory *urltest.HistoryStorage
 	tcpListener    net.Listener
+	directIO       bool
 	mode           string
 	storeSelected  bool
 	cacheFile      adapter.ClashCacheFile
 }
 
-func NewServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (*Server, error) {
+func NewServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
 	trafficManager := trafficontrol.NewManager()
 	chiRouter := chi.NewRouter()
 	server := &Server{
@@ -55,6 +61,7 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 		},
 		trafficManager: trafficManager,
 		urlTestHistory: urltest.NewHistoryStorage(),
+		directIO:       options.DirectIO,
 		mode:           strings.ToLower(options.DefaultMode),
 	}
 	if server.mode == "" {
@@ -144,8 +151,12 @@ func (s *Server) CacheFile() adapter.ClashCacheFile {
 	return s.cacheFile
 }
 
+func (s *Server) HistoryStorage() *urltest.HistoryStorage {
+	return s.urlTestHistory
+}
+
 func (s *Server) RoutedConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, matchedRule adapter.Rule) (net.Conn, adapter.Tracker) {
-	tracker := trafficontrol.NewTCPTracker(conn, s.trafficManager, castMetadata(metadata), s.router, matchedRule)
+	tracker := trafficontrol.NewTCPTracker(conn, s.trafficManager, castMetadata(metadata), s.router, matchedRule, s.directIO)
 	return tracker, tracker
 }
 

experimental/clashapi/trafficontrol/tracker.go

@@ -6,9 +6,8 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/experimental/trackerconn"
 	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
 	"github.com/gofrs/uuid"
@@ -45,7 +44,7 @@ type trackerInfo struct {
 }
 
 type tcpTracker struct {
-	net.Conn `json:"-"`
+	N.ExtendedConn `json:"-"`
 	*trackerInfo
 	manager *Manager
 }
@@ -54,25 +53,9 @@ func (tt *tcpTracker) ID() string {
 	return tt.UUID.String()
 }
 
-func (tt *tcpTracker) Read(b []byte) (int, error) {
-	n, err := tt.Conn.Read(b)
-	upload := int64(n)
-	tt.manager.PushUploaded(upload)
-	tt.UploadTotal.Add(upload)
-	return n, err
-}
-
-func (tt *tcpTracker) Write(b []byte) (int, error) {
-	n, err := tt.Conn.Write(b)
-	download := int64(n)
-	tt.manager.PushDownloaded(download)
-	tt.DownloadTotal.Add(download)
-	return n, err
-}
-
 func (tt *tcpTracker) Close() error {
 	tt.manager.Leave(tt)
-	return tt.Conn.Close()
+	return tt.ExtendedConn.Close()
 }
 
 func (tt *tcpTracker) Leave() {
@@ -80,10 +63,18 @@ func (tt *tcpTracker) Leave() {
 }
 
 func (tt *tcpTracker) Upstream() any {
-	return tt.Conn
+	return tt.ExtendedConn
 }
 
-func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router adapter.Router, rule adapter.Rule) *tcpTracker {
+func (tt *tcpTracker) ReaderReplaceable() bool {
+	return true
+}
+
+func (tt *tcpTracker) WriterReplaceable() bool {
+	return true
+}
+
+func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router adapter.Router, rule adapter.Rule, directIO bool) *tcpTracker {
 	uuid, _ := uuid.NewV4()
 
 	var chain []string
@@ -106,8 +97,17 @@ func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router ad
 		next = group.Now()
 	}
 
+	upload := atomic.NewInt64(0)
+	download := atomic.NewInt64(0)
+
 	t := &tcpTracker{
-		Conn:    conn,
+		ExtendedConn: trackerconn.NewHook(conn, func(n int64) {
+			upload.Add(n)
+			manager.PushUploaded(n)
+		}, func(n int64) {
+			download.Add(n)
+			manager.PushDownloaded(n)
+		}, directIO),
 		manager: manager,
 		trackerInfo: &trackerInfo{
 			UUID:          uuid,
@@ -115,8 +115,8 @@ func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router ad
 			Metadata:      metadata,
 			Chain:         common.Reverse(chain),
 			Rule:          "",
-			UploadTotal:   atomic.NewInt64(0),
+			UploadTotal:   upload,
-			DownloadTotal: atomic.NewInt64(0),
+			DownloadTotal: download,
 		},
 	}
 
@@ -140,27 +140,6 @@ func (ut *udpTracker) ID() string {
 	return ut.UUID.String()
 }
 
-func (ut *udpTracker) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	destination, err = ut.PacketConn.ReadPacket(buffer)
-	if err == nil {
-		upload := int64(buffer.Len())
-		ut.manager.PushUploaded(upload)
-		ut.UploadTotal.Add(upload)
-	}
-	return
-}
-
-func (ut *udpTracker) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	download := int64(buffer.Len())
-	err := ut.PacketConn.WritePacket(buffer, destination)
-	if err != nil {
-		return err
-	}
-	ut.manager.PushDownloaded(download)
-	ut.DownloadTotal.Add(download)
-	return nil
-}
-
 func (ut *udpTracker) Close() error {
 	ut.manager.Leave(ut)
 	return ut.PacketConn.Close()
@@ -174,6 +153,14 @@ func (ut *udpTracker) Upstream() any {
 	return ut.PacketConn
 }
 
+func (ut *udpTracker) ReaderReplaceable() bool {
+	return true
+}
+
+func (ut *udpTracker) WriterReplaceable() bool {
+	return true
+}
+
 func NewUDPTracker(conn N.PacketConn, manager *Manager, metadata Metadata, router adapter.Router, rule adapter.Rule) *udpTracker {
 	uuid, _ := uuid.NewV4()
 
@@ -197,17 +184,26 @@ func NewUDPTracker(conn N.PacketConn, manager *Manager, metadata Metadata, route
 		next = group.Now()
 	}
 
+	upload := atomic.NewInt64(0)
+	download := atomic.NewInt64(0)
+
 	ut := &udpTracker{
-		PacketConn: conn,
+		PacketConn: trackerconn.NewHookPacket(conn, func(n int64) {
-		manager:    manager,
+			upload.Add(n)
+			manager.PushUploaded(n)
+		}, func(n int64) {
+			download.Add(n)
+			manager.PushDownloaded(n)
+		}),
+		manager: manager,
 		trackerInfo: &trackerInfo{
 			UUID:          uuid,
 			Start:         time.Now(),
 			Metadata:      metadata,
 			Chain:         common.Reverse(chain),
 			Rule:          "",
-			UploadTotal:   atomic.NewInt64(0),
+			UploadTotal:   upload,
-			DownloadTotal: atomic.NewInt64(0),
+			DownloadTotal: download,
 		},
 	}
 

experimental/clashapi_stub.go

@@ -1,14 +0,0 @@
-//go:build !with_clash_api
-
-package experimental
-
-import (
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing-box/option"
-	E "github.com/sagernet/sing/common/exceptions"
-)
-
-func NewClashServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
-	return nil, E.New(`clash api is not included in this build, rebuild with -tags with_clash_api`)
-}

experimental/trackerconn/conn.go

@@ -0,0 +1,160 @@
+package trackerconn
+
+import (
+	"io"
+	"net"
+
+	"github.com/sagernet/sing/common/buf"
+	"github.com/sagernet/sing/common/bufio"
+	N "github.com/sagernet/sing/common/network"
+
+	"go.uber.org/atomic"
+)
+
+func New(conn net.Conn, readCounter *atomic.Int64, writeCounter *atomic.Int64, direct bool) N.ExtendedConn {
+	trackerConn := &Conn{bufio.NewExtendedConn(conn), readCounter, writeCounter}
+	if direct {
+		return (*DirectConn)(trackerConn)
+	} else {
+		return trackerConn
+	}
+}
+
+func NewHook(conn net.Conn, readCounter func(n int64), writeCounter func(n int64), direct bool) N.ExtendedConn {
+	trackerConn := &HookConn{bufio.NewExtendedConn(conn), readCounter, writeCounter}
+	if direct {
+		return (*DirectHookConn)(trackerConn)
+	} else {
+		return trackerConn
+	}
+}
+
+type Conn struct {
+	N.ExtendedConn
+	readCounter  *atomic.Int64
+	writeCounter *atomic.Int64
+}
+
+func (c *Conn) Read(p []byte) (n int, err error) {
+	n, err = c.ExtendedConn.Read(p)
+	c.readCounter.Add(int64(n))
+	return n, err
+}
+
+func (c *Conn) ReadBuffer(buffer *buf.Buffer) error {
+	err := c.ExtendedConn.ReadBuffer(buffer)
+	if err != nil {
+		return err
+	}
+	c.readCounter.Add(int64(buffer.Len()))
+	return nil
+}
+
+func (c *Conn) Write(p []byte) (n int, err error) {
+	n, err = c.ExtendedConn.Write(p)
+	c.writeCounter.Add(int64(n))
+	return n, err
+}
+
+func (c *Conn) WriteBuffer(buffer *buf.Buffer) error {
+	dataLen := int64(buffer.Len())
+	err := c.ExtendedConn.WriteBuffer(buffer)
+	if err != nil {
+		return err
+	}
+	c.writeCounter.Add(dataLen)
+	return nil
+}
+
+func (c *Conn) Upstream() any {
+	return c.ExtendedConn
+}
+
+type HookConn struct {
+	N.ExtendedConn
+	readCounter  func(n int64)
+	writeCounter func(n int64)
+}
+
+func (c *HookConn) Read(p []byte) (n int, err error) {
+	n, err = c.ExtendedConn.Read(p)
+	c.readCounter(int64(n))
+	return n, err
+}
+
+func (c *HookConn) ReadBuffer(buffer *buf.Buffer) error {
+	err := c.ExtendedConn.ReadBuffer(buffer)
+	if err != nil {
+		return err
+	}
+	c.readCounter(int64(buffer.Len()))
+	return nil
+}
+
+func (c *HookConn) Write(p []byte) (n int, err error) {
+	n, err = c.ExtendedConn.Write(p)
+	c.writeCounter(int64(n))
+	return n, err
+}
+
+func (c *HookConn) WriteBuffer(buffer *buf.Buffer) error {
+	dataLen := int64(buffer.Len())
+	err := c.ExtendedConn.WriteBuffer(buffer)
+	if err != nil {
+		return err
+	}
+	c.writeCounter(dataLen)
+	return nil
+}
+
+func (c *HookConn) Upstream() any {
+	return c.ExtendedConn
+}
+
+type DirectConn Conn
+
+func (c *DirectConn) WriteTo(w io.Writer) (n int64, err error) {
+	reader := N.UnwrapReader(c.ExtendedConn)
+	if wt, ok := reader.(io.WriterTo); ok {
+		n, err = wt.WriteTo(w)
+		c.readCounter.Add(n)
+		return
+	} else {
+		return bufio.Copy(w, (*Conn)(c))
+	}
+}
+
+func (c *DirectConn) ReadFrom(r io.Reader) (n int64, err error) {
+	writer := N.UnwrapWriter(c.ExtendedConn)
+	if rt, ok := writer.(io.ReaderFrom); ok {
+		n, err = rt.ReadFrom(r)
+		c.writeCounter.Add(n)
+		return
+	} else {
+		return bufio.Copy((*Conn)(c), r)
+	}
+}
+
+type DirectHookConn HookConn
+
+func (c *DirectHookConn) WriteTo(w io.Writer) (n int64, err error) {
+	reader := N.UnwrapReader(c.ExtendedConn)
+	if wt, ok := reader.(io.WriterTo); ok {
+		n, err = wt.WriteTo(w)
+		c.readCounter(n)
+		return
+	} else {
+		return bufio.Copy(w, (*HookConn)(c))
+	}
+}
+
+func (c *DirectHookConn) ReadFrom(r io.Reader) (n int64, err error) {
+	writer := N.UnwrapWriter(c.ExtendedConn)
+	if rt, ok := writer.(io.ReaderFrom); ok {
+		n, err = rt.ReadFrom(r)
+		c.writeCounter(n)
+		return
+	} else {
+		return bufio.Copy((*HookConn)(c), r)
+	}
+}

experimental/trackerconn/packet_conn.go

@@ -0,0 +1,73 @@
+package trackerconn
+
+import (
+	"github.com/sagernet/sing/common/buf"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	"go.uber.org/atomic"
+)
+
+func NewPacket(conn N.PacketConn, readCounter *atomic.Int64, writeCounter *atomic.Int64) *PacketConn {
+	return &PacketConn{conn, readCounter, writeCounter}
+}
+
+func NewHookPacket(conn N.PacketConn, readCounter func(n int64), writeCounter func(n int64)) *HookPacketConn {
+	return &HookPacketConn{conn, readCounter, writeCounter}
+}
+
+type PacketConn struct {
+	N.PacketConn
+	readCounter  *atomic.Int64
+	writeCounter *atomic.Int64
+}
+
+func (c *PacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
+	destination, err = c.PacketConn.ReadPacket(buffer)
+	if err == nil {
+		c.readCounter.Add(int64(buffer.Len()))
+	}
+	return
+}
+
+func (c *PacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
+	dataLen := int64(buffer.Len())
+	err := c.PacketConn.WritePacket(buffer, destination)
+	if err != nil {
+		return err
+	}
+	c.writeCounter.Add(dataLen)
+	return nil
+}
+
+func (c *PacketConn) Upstream() any {
+	return c.PacketConn
+}
+
+type HookPacketConn struct {
+	N.PacketConn
+	readCounter  func(n int64)
+	writeCounter func(n int64)
+}
+
+func (c *HookPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
+	destination, err = c.PacketConn.ReadPacket(buffer)
+	if err == nil {
+		c.readCounter(int64(buffer.Len()))
+	}
+	return
+}
+
+func (c *HookPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
+	dataLen := int64(buffer.Len())
+	err := c.PacketConn.WritePacket(buffer, destination)
+	if err != nil {
+		return err
+	}
+	c.writeCounter(dataLen)
+	return nil
+}
+
+func (c *HookPacketConn) Upstream() any {
+	return c.PacketConn
+}

experimental/v2rayapi.go

@@ -0,0 +1,24 @@
+package experimental
+
+import (
+	"os"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+)
+
+type V2RayServerConstructor = func(logger log.Logger, options option.V2RayAPIOptions) (adapter.V2RayServer, error)
+
+var v2rayServerConstructor V2RayServerConstructor
+
+func RegisterV2RayServerConstructor(constructor V2RayServerConstructor) {
+	v2rayServerConstructor = constructor
+}
+
+func NewV2RayServer(logger log.Logger, options option.V2RayAPIOptions) (adapter.V2RayServer, error) {
+	if v2rayServerConstructor == nil {
+		return nil, os.ErrInvalid
+	}
+	return v2rayServerConstructor(logger, options)
+}

experimental/v2rayapi/server.go

@@ -0,0 +1,75 @@
+package v2rayapi
+
+import (
+	"errors"
+	"net"
+	"net/http"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/experimental"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+func init() {
+	experimental.RegisterV2RayServerConstructor(NewServer)
+}
+
+var _ adapter.V2RayServer = (*Server)(nil)
+
+type Server struct {
+	logger       log.Logger
+	listen       string
+	tcpListener  net.Listener
+	grpcServer   *grpc.Server
+	statsService *StatsService
+}
+
+func NewServer(logger log.Logger, options option.V2RayAPIOptions) (adapter.V2RayServer, error) {
+	grpcServer := grpc.NewServer(grpc.Creds(insecure.NewCredentials()))
+	statsService := NewStatsService(common.PtrValueOrDefault(options.Stats))
+	if statsService != nil {
+		RegisterStatsServiceServer(grpcServer, statsService)
+	}
+	server := &Server{
+		logger:       logger,
+		listen:       options.Listen,
+		grpcServer:   grpcServer,
+		statsService: statsService,
+	}
+	return server, nil
+}
+
+func (s *Server) Start() error {
+	listener, err := net.Listen("tcp", s.listen)
+	if err != nil {
+		return err
+	}
+	s.logger.Info("grpc server started at ", listener.Addr())
+	s.tcpListener = listener
+	go func() {
+		err = s.grpcServer.Serve(listener)
+		if err != nil && !errors.Is(err, http.ErrServerClosed) {
+			s.logger.Error(err)
+		}
+	}()
+	return nil
+}
+
+func (s *Server) Close() error {
+	if s.grpcServer != nil {
+		s.grpcServer.Stop()
+	}
+	return common.Close(
+		common.PtrOrNil(s.grpcServer),
+		s.tcpListener,
+	)
+}
+
+func (s *Server) StatsService() adapter.V2RayStatsService {
+	return s.statsService
+}

experimental/v2rayapi/stats.go

@@ -0,0 +1,194 @@
+package v2rayapi
+
+import (
+	"context"
+	"net"
+	"regexp"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/experimental/trackerconn"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	N "github.com/sagernet/sing/common/network"
+
+	"go.uber.org/atomic"
+)
+
+func init() {
+	StatsService_ServiceDesc.ServiceName = "v2ray.core.app.stats.command.StatsService"
+}
+
+var (
+	_ adapter.V2RayStatsService = (*StatsService)(nil)
+	_ StatsServiceServer        = (*StatsService)(nil)
+)
+
+type StatsService struct {
+	createdAt time.Time
+	directIO  bool
+	inbounds  map[string]bool
+	outbounds map[string]bool
+	access    sync.Mutex
+	counters  map[string]*atomic.Int64
+}
+
+func NewStatsService(options option.V2RayStatsServiceOptions) *StatsService {
+	if !options.Enabled {
+		return nil
+	}
+	inbounds := make(map[string]bool)
+	outbounds := make(map[string]bool)
+	for _, inbound := range options.Inbounds {
+		inbounds[inbound] = true
+	}
+	for _, outbound := range options.Outbounds {
+		outbounds[outbound] = true
+	}
+	return &StatsService{
+		createdAt: time.Now(),
+		directIO:  options.DirectIO,
+		inbounds:  inbounds,
+		outbounds: outbounds,
+		counters:  make(map[string]*atomic.Int64),
+	}
+}
+
+func (s *StatsService) RoutedConnection(inbound string, outbound string, conn net.Conn) net.Conn {
+	var readCounter *atomic.Int64
+	var writeCounter *atomic.Int64
+	countInbound := inbound != "" && s.inbounds[inbound]
+	countOutbound := outbound != "" && s.outbounds[outbound]
+	if !countInbound && !countOutbound {
+		return conn
+	}
+	s.access.Lock()
+	if countInbound {
+		readCounter = s.loadOrCreateCounter("inbound>>>"+inbound+">>>traffic>>>uplink", readCounter)
+		writeCounter = s.loadOrCreateCounter("inbound>>>"+inbound+">>>traffic>>>downlink", writeCounter)
+	}
+	if countOutbound {
+		readCounter = s.loadOrCreateCounter("outbound>>>"+outbound+">>>traffic>>>uplink", readCounter)
+		writeCounter = s.loadOrCreateCounter("outbound>>>"+outbound+">>>traffic>>>downlink", writeCounter)
+	}
+	s.access.Unlock()
+	return trackerconn.New(conn, readCounter, writeCounter, s.directIO)
+}
+
+func (s *StatsService) RoutedPacketConnection(inbound string, outbound string, conn N.PacketConn) N.PacketConn {
+	var readCounter *atomic.Int64
+	var writeCounter *atomic.Int64
+	countInbound := inbound != "" && s.inbounds[inbound]
+	countOutbound := outbound != "" && s.outbounds[outbound]
+	if !countInbound && !countOutbound {
+		return conn
+	}
+	s.access.Lock()
+	if countInbound {
+		readCounter = s.loadOrCreateCounter("inbound>>>"+inbound+">>>traffic>>>uplink", readCounter)
+		writeCounter = s.loadOrCreateCounter("inbound>>>"+inbound+">>>traffic>>>downlink", writeCounter)
+	}
+	if countOutbound {
+		readCounter = s.loadOrCreateCounter("outbound>>>"+outbound+">>>traffic>>>uplink", readCounter)
+		writeCounter = s.loadOrCreateCounter("outbound>>>"+outbound+">>>traffic>>>downlink", writeCounter)
+	}
+	s.access.Unlock()
+	return trackerconn.NewPacket(conn, readCounter, writeCounter)
+}
+
+func (s *StatsService) GetStats(ctx context.Context, request *GetStatsRequest) (*GetStatsResponse, error) {
+	s.access.Lock()
+	counter, loaded := s.counters[request.Name]
+	s.access.Unlock()
+	if !loaded {
+		return nil, E.New(request.Name, " not found.")
+	}
+	var value int64
+	if request.Reset_ {
+		value = counter.Swap(0)
+	} else {
+		value = counter.Load()
+	}
+	return &GetStatsResponse{Stat: &Stat{Name: request.Name, Value: value}}, nil
+}
+
+func (s *StatsService) QueryStats(ctx context.Context, request *QueryStatsRequest) (*QueryStatsResponse, error) {
+	var response QueryStatsResponse
+	s.access.Lock()
+	defer s.access.Unlock()
+	if request.Regexp {
+		matchers := make([]*regexp.Regexp, 0, len(request.Patterns))
+		for _, pattern := range request.Patterns {
+			matcher, err := regexp.Compile(pattern)
+			if err != nil {
+				return nil, err
+			}
+			matchers = append(matchers, matcher)
+		}
+		for name, counter := range s.counters {
+			for _, matcher := range matchers {
+				if matcher.MatchString(name) {
+					var value int64
+					if request.Reset_ {
+						value = counter.Swap(0)
+					} else {
+						value = counter.Load()
+					}
+					response.Stat = append(response.Stat, &Stat{Name: name, Value: value})
+				}
+			}
+		}
+	} else {
+		for name, counter := range s.counters {
+			for _, matcher := range request.Patterns {
+				if strings.Contains(name, matcher) {
+					var value int64
+					if request.Reset_ {
+						value = counter.Swap(0)
+					} else {
+						value = counter.Load()
+					}
+					response.Stat = append(response.Stat, &Stat{Name: name, Value: value})
+				}
+			}
+		}
+	}
+	return &response, nil
+}
+
+func (s *StatsService) GetSysStats(ctx context.Context, request *SysStatsRequest) (*SysStatsResponse, error) {
+	var rtm runtime.MemStats
+	runtime.ReadMemStats(&rtm)
+	response := &SysStatsResponse{
+		Uptime:       uint32(time.Now().Sub(s.createdAt).Seconds()),
+		NumGoroutine: uint32(runtime.NumGoroutine()),
+		Alloc:        rtm.Alloc,
+		TotalAlloc:   rtm.TotalAlloc,
+		Sys:          rtm.Sys,
+		Mallocs:      rtm.Mallocs,
+		Frees:        rtm.Frees,
+		LiveObjects:  rtm.Mallocs - rtm.Frees,
+		NumGC:        rtm.NumGC,
+		PauseTotalNs: rtm.PauseTotalNs,
+	}
+
+	return response, nil
+}
+
+func (s *StatsService) mustEmbedUnimplementedStatsServiceServer() {
+}
+
+//nolint:staticcheck
+func (s *StatsService) loadOrCreateCounter(name string, counter *atomic.Int64) *atomic.Int64 {
+	counter, loaded := s.counters[name]
+	if !loaded {
+		if counter == nil {
+			counter = atomic.NewInt64(0)
+		}
+		s.counters[name] = counter
+	}
+	return counter
+}

experimental/v2rayapi/stats.pb.go

@@ -0,0 +1,678 @@
+package v2rayapi
+
+import (
+	reflect "reflect"
+	sync "sync"
+
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type GetStatsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Name of the stat counter.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Whether or not to reset the counter to fetching its value.
+	Reset_ bool `protobuf:"varint,2,opt,name=reset,proto3" json:"reset,omitempty"`
+}
+
+func (x *GetStatsRequest) Reset() {
+	*x = GetStatsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetStatsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetStatsRequest) ProtoMessage() {}
+
+func (x *GetStatsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetStatsRequest.ProtoReflect.Descriptor instead.
+func (*GetStatsRequest) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *GetStatsRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *GetStatsRequest) GetReset_() bool {
+	if x != nil {
+		return x.Reset_
+	}
+	return false
+}
+
+type Stat struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name  string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Value int64  `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *Stat) Reset() {
+	*x = Stat{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Stat) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Stat) ProtoMessage() {}
+
+func (x *Stat) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Stat.ProtoReflect.Descriptor instead.
+func (*Stat) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Stat) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Stat) GetValue() int64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+type GetStatsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Stat *Stat `protobuf:"bytes,1,opt,name=stat,proto3" json:"stat,omitempty"`
+}
+
+func (x *GetStatsResponse) Reset() {
+	*x = GetStatsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetStatsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetStatsResponse) ProtoMessage() {}
+
+func (x *GetStatsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetStatsResponse.ProtoReflect.Descriptor instead.
+func (*GetStatsResponse) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *GetStatsResponse) GetStat() *Stat {
+	if x != nil {
+		return x.Stat
+	}
+	return nil
+}
+
+type QueryStatsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Deprecated, use Patterns instead
+	Pattern  string   `protobuf:"bytes,1,opt,name=pattern,proto3" json:"pattern,omitempty"`
+	Reset_   bool     `protobuf:"varint,2,opt,name=reset,proto3" json:"reset,omitempty"`
+	Patterns []string `protobuf:"bytes,3,rep,name=patterns,proto3" json:"patterns,omitempty"`
+	Regexp   bool     `protobuf:"varint,4,opt,name=regexp,proto3" json:"regexp,omitempty"`
+}
+
+func (x *QueryStatsRequest) Reset() {
+	*x = QueryStatsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryStatsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryStatsRequest) ProtoMessage() {}
+
+func (x *QueryStatsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryStatsRequest.ProtoReflect.Descriptor instead.
+func (*QueryStatsRequest) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *QueryStatsRequest) GetPattern() string {
+	if x != nil {
+		return x.Pattern
+	}
+	return ""
+}
+
+func (x *QueryStatsRequest) GetReset_() bool {
+	if x != nil {
+		return x.Reset_
+	}
+	return false
+}
+
+func (x *QueryStatsRequest) GetPatterns() []string {
+	if x != nil {
+		return x.Patterns
+	}
+	return nil
+}
+
+func (x *QueryStatsRequest) GetRegexp() bool {
+	if x != nil {
+		return x.Regexp
+	}
+	return false
+}
+
+type QueryStatsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Stat []*Stat `protobuf:"bytes,1,rep,name=stat,proto3" json:"stat,omitempty"`
+}
+
+func (x *QueryStatsResponse) Reset() {
+	*x = QueryStatsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryStatsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryStatsResponse) ProtoMessage() {}
+
+func (x *QueryStatsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryStatsResponse.ProtoReflect.Descriptor instead.
+func (*QueryStatsResponse) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *QueryStatsResponse) GetStat() []*Stat {
+	if x != nil {
+		return x.Stat
+	}
+	return nil
+}
+
+type SysStatsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *SysStatsRequest) Reset() {
+	*x = SysStatsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SysStatsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SysStatsRequest) ProtoMessage() {}
+
+func (x *SysStatsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SysStatsRequest.ProtoReflect.Descriptor instead.
+func (*SysStatsRequest) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{5}
+}
+
+type SysStatsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	NumGoroutine uint32 `protobuf:"varint,1,opt,name=NumGoroutine,proto3" json:"NumGoroutine,omitempty"`
+	NumGC        uint32 `protobuf:"varint,2,opt,name=NumGC,proto3" json:"NumGC,omitempty"`
+	Alloc        uint64 `protobuf:"varint,3,opt,name=Alloc,proto3" json:"Alloc,omitempty"`
+	TotalAlloc   uint64 `protobuf:"varint,4,opt,name=TotalAlloc,proto3" json:"TotalAlloc,omitempty"`
+	Sys          uint64 `protobuf:"varint,5,opt,name=Sys,proto3" json:"Sys,omitempty"`
+	Mallocs      uint64 `protobuf:"varint,6,opt,name=Mallocs,proto3" json:"Mallocs,omitempty"`
+	Frees        uint64 `protobuf:"varint,7,opt,name=Frees,proto3" json:"Frees,omitempty"`
+	LiveObjects  uint64 `protobuf:"varint,8,opt,name=LiveObjects,proto3" json:"LiveObjects,omitempty"`
+	PauseTotalNs uint64 `protobuf:"varint,9,opt,name=PauseTotalNs,proto3" json:"PauseTotalNs,omitempty"`
+	Uptime       uint32 `protobuf:"varint,10,opt,name=Uptime,proto3" json:"Uptime,omitempty"`
+}
+
+func (x *SysStatsResponse) Reset() {
+	*x = SysStatsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_experimental_v2rayapi_stats_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SysStatsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SysStatsResponse) ProtoMessage() {}
+
+func (x *SysStatsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_experimental_v2rayapi_stats_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SysStatsResponse.ProtoReflect.Descriptor instead.
+func (*SysStatsResponse) Descriptor() ([]byte, []int) {
+	return file_experimental_v2rayapi_stats_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *SysStatsResponse) GetNumGoroutine() uint32 {
+	if x != nil {
+		return x.NumGoroutine
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetNumGC() uint32 {
+	if x != nil {
+		return x.NumGC
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetAlloc() uint64 {
+	if x != nil {
+		return x.Alloc
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetTotalAlloc() uint64 {
+	if x != nil {
+		return x.TotalAlloc
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetSys() uint64 {
+	if x != nil {
+		return x.Sys
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetMallocs() uint64 {
+	if x != nil {
+		return x.Mallocs
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetFrees() uint64 {
+	if x != nil {
+		return x.Frees
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetLiveObjects() uint64 {
+	if x != nil {
+		return x.LiveObjects
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetPauseTotalNs() uint64 {
+	if x != nil {
+		return x.PauseTotalNs
+	}
+	return 0
+}
+
+func (x *SysStatsResponse) GetUptime() uint32 {
+	if x != nil {
+		return x.Uptime
+	}
+	return 0
+}
+
+var File_experimental_v2rayapi_stats_proto protoreflect.FileDescriptor
+
+var file_experimental_v2rayapi_stats_proto_rawDesc = []byte{
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+	0x52, 0x0c, 0x50, 0x61, 0x75, 0x73, 0x65, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x4e, 0x73, 0x12, 0x16,
+	0x0a, 0x06, 0x55, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x0a, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x06,
+	0x55, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x32, 0xb4, 0x02, 0x0a, 0x0c, 0x53, 0x74, 0x61, 0x74, 0x73,
+	0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x5d, 0x0a, 0x08, 0x47, 0x65, 0x74, 0x53, 0x74,
+	0x61, 0x74, 0x73, 0x12, 0x26, 0x2e, 0x65, 0x78, 0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74,
+	0x61, 0x6c, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x61, 0x70, 0x69, 0x2e, 0x47, 0x65, 0x74, 0x53,
+	0x74, 0x61, 0x74, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x27, 0x2e, 0x65, 0x78,
+	0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x6c, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79,
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+	0x74, 0x61, 0x74, 0x73, 0x12, 0x28, 0x2e, 0x65, 0x78, 0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e,
+	0x74, 0x61, 0x6c, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x61, 0x70, 0x69, 0x2e, 0x51, 0x75, 0x65,
+	0x72, 0x79, 0x53, 0x74, 0x61, 0x74, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x29,
+	0x2e, 0x65, 0x78, 0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x6c, 0x2e, 0x76, 0x32,
+	0x72, 0x61, 0x79, 0x61, 0x70, 0x69, 0x2e, 0x51, 0x75, 0x65, 0x72, 0x79, 0x53, 0x74, 0x61, 0x74,
+	0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x60, 0x0a, 0x0b, 0x47,
+	0x65, 0x74, 0x53, 0x79, 0x73, 0x53, 0x74, 0x61, 0x74, 0x73, 0x12, 0x26, 0x2e, 0x65, 0x78, 0x70,
+	0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x6c, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x61,
+	0x70, 0x69, 0x2e, 0x53, 0x79, 0x73, 0x53, 0x74, 0x61, 0x74, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x1a, 0x27, 0x2e, 0x65, 0x78, 0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74, 0x61,
+	0x6c, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x61, 0x70, 0x69, 0x2e, 0x53, 0x79, 0x73, 0x53, 0x74,
+	0x61, 0x74, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x34, 0x5a,
+	0x32, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x61, 0x67, 0x65,
+	0x72, 0x6e, 0x65, 0x74, 0x2f, 0x73, 0x69, 0x6e, 0x67, 0x2d, 0x62, 0x6f, 0x78, 0x2f, 0x65, 0x78,
+	0x70, 0x65, 0x72, 0x69, 0x6d, 0x65, 0x6e, 0x74, 0x61, 0x6c, 0x2f, 0x76, 0x32, 0x72, 0x61, 0x79,
+	0x61, 0x70, 0x69, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_experimental_v2rayapi_stats_proto_rawDescOnce sync.Once
+	file_experimental_v2rayapi_stats_proto_rawDescData = file_experimental_v2rayapi_stats_proto_rawDesc
+)
+
+func file_experimental_v2rayapi_stats_proto_rawDescGZIP() []byte {
+	file_experimental_v2rayapi_stats_proto_rawDescOnce.Do(func() {
+		file_experimental_v2rayapi_stats_proto_rawDescData = protoimpl.X.CompressGZIP(file_experimental_v2rayapi_stats_proto_rawDescData)
+	})
+	return file_experimental_v2rayapi_stats_proto_rawDescData
+}
+
+var (
+	file_experimental_v2rayapi_stats_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
+	file_experimental_v2rayapi_stats_proto_goTypes  = []interface{}{
+		(*GetStatsRequest)(nil),    // 0: experimental.v2rayapi.GetStatsRequest
+		(*Stat)(nil),               // 1: experimental.v2rayapi.Stat
+		(*GetStatsResponse)(nil),   // 2: experimental.v2rayapi.GetStatsResponse
+		(*QueryStatsRequest)(nil),  // 3: experimental.v2rayapi.QueryStatsRequest
+		(*QueryStatsResponse)(nil), // 4: experimental.v2rayapi.QueryStatsResponse
+		(*SysStatsRequest)(nil),    // 5: experimental.v2rayapi.SysStatsRequest
+		(*SysStatsResponse)(nil),   // 6: experimental.v2rayapi.SysStatsResponse
+	}
+)
+
+var file_experimental_v2rayapi_stats_proto_depIdxs = []int32{
+	1, // 0: experimental.v2rayapi.GetStatsResponse.stat:type_name -> experimental.v2rayapi.Stat
+	1, // 1: experimental.v2rayapi.QueryStatsResponse.stat:type_name -> experimental.v2rayapi.Stat
+	0, // 2: experimental.v2rayapi.StatsService.GetStats:input_type -> experimental.v2rayapi.GetStatsRequest
+	3, // 3: experimental.v2rayapi.StatsService.QueryStats:input_type -> experimental.v2rayapi.QueryStatsRequest
+	5, // 4: experimental.v2rayapi.StatsService.GetSysStats:input_type -> experimental.v2rayapi.SysStatsRequest
+	2, // 5: experimental.v2rayapi.StatsService.GetStats:output_type -> experimental.v2rayapi.GetStatsResponse
+	4, // 6: experimental.v2rayapi.StatsService.QueryStats:output_type -> experimental.v2rayapi.QueryStatsResponse
+	6, // 7: experimental.v2rayapi.StatsService.GetSysStats:output_type -> experimental.v2rayapi.SysStatsResponse
+	5, // [5:8] is the sub-list for method output_type
+	2, // [2:5] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
+}
+
+func init() { file_experimental_v2rayapi_stats_proto_init() }
+func file_experimental_v2rayapi_stats_proto_init() {
+	if File_experimental_v2rayapi_stats_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_experimental_v2rayapi_stats_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetStatsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Stat); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetStatsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryStatsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryStatsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SysStatsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_experimental_v2rayapi_stats_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SysStatsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_experimental_v2rayapi_stats_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   7,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_experimental_v2rayapi_stats_proto_goTypes,
+		DependencyIndexes: file_experimental_v2rayapi_stats_proto_depIdxs,
+		MessageInfos:      file_experimental_v2rayapi_stats_proto_msgTypes,
+	}.Build()
+	File_experimental_v2rayapi_stats_proto = out.File
+	file_experimental_v2rayapi_stats_proto_rawDesc = nil
+	file_experimental_v2rayapi_stats_proto_goTypes = nil
+	file_experimental_v2rayapi_stats_proto_depIdxs = nil
+}

experimental/v2rayapi/stats.proto

@@ -0,0 +1,53 @@
+syntax = "proto3";
+
+package experimental.v2rayapi;
+option go_package = "github.com/sagernet/sing-box/experimental/v2rayapi";
+
+message GetStatsRequest {
+  // Name of the stat counter.
+  string name = 1;
+  // Whether or not to reset the counter to fetching its value.
+  bool reset = 2;
+}
+
+message Stat {
+  string name = 1;
+  int64 value = 2;
+}
+
+message GetStatsResponse {
+  Stat stat = 1;
+}
+
+message QueryStatsRequest {
+  // Deprecated, use Patterns instead
+  string pattern = 1;
+  bool reset = 2;
+  repeated string patterns = 3;
+  bool regexp = 4;
+}
+
+message QueryStatsResponse {
+  repeated Stat stat = 1;
+}
+
+message SysStatsRequest {}
+
+message SysStatsResponse {
+  uint32 NumGoroutine = 1;
+  uint32 NumGC = 2;
+  uint64 Alloc = 3;
+  uint64 TotalAlloc = 4;
+  uint64 Sys = 5;
+  uint64 Mallocs = 6;
+  uint64 Frees = 7;
+  uint64 LiveObjects = 8;
+  uint64 PauseTotalNs = 9;
+  uint32 Uptime = 10;
+}
+
+service StatsService {
+  rpc GetStats(GetStatsRequest) returns (GetStatsResponse) {}
+  rpc QueryStats(QueryStatsRequest) returns (QueryStatsResponse) {}
+  rpc GetSysStats(SysStatsRequest) returns (SysStatsResponse) {}
+}

experimental/v2rayapi/stats_grpc.pb.go

@@ -0,0 +1,173 @@
+package v2rayapi
+
+import (
+	context "context"
+
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// StatsServiceClient is the client API for StatsService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type StatsServiceClient interface {
+	GetStats(ctx context.Context, in *GetStatsRequest, opts ...grpc.CallOption) (*GetStatsResponse, error)
+	QueryStats(ctx context.Context, in *QueryStatsRequest, opts ...grpc.CallOption) (*QueryStatsResponse, error)
+	GetSysStats(ctx context.Context, in *SysStatsRequest, opts ...grpc.CallOption) (*SysStatsResponse, error)
+}
+
+type statsServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewStatsServiceClient(cc grpc.ClientConnInterface) StatsServiceClient {
+	return &statsServiceClient{cc}
+}
+
+func (c *statsServiceClient) GetStats(ctx context.Context, in *GetStatsRequest, opts ...grpc.CallOption) (*GetStatsResponse, error) {
+	out := new(GetStatsResponse)
+	err := c.cc.Invoke(ctx, "/experimental.v2rayapi.StatsService/GetStats", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *statsServiceClient) QueryStats(ctx context.Context, in *QueryStatsRequest, opts ...grpc.CallOption) (*QueryStatsResponse, error) {
+	out := new(QueryStatsResponse)
+	err := c.cc.Invoke(ctx, "/experimental.v2rayapi.StatsService/QueryStats", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *statsServiceClient) GetSysStats(ctx context.Context, in *SysStatsRequest, opts ...grpc.CallOption) (*SysStatsResponse, error) {
+	out := new(SysStatsResponse)
+	err := c.cc.Invoke(ctx, "/experimental.v2rayapi.StatsService/GetSysStats", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// StatsServiceServer is the server API for StatsService service.
+// All implementations must embed UnimplementedStatsServiceServer
+// for forward compatibility
+type StatsServiceServer interface {
+	GetStats(context.Context, *GetStatsRequest) (*GetStatsResponse, error)
+	QueryStats(context.Context, *QueryStatsRequest) (*QueryStatsResponse, error)
+	GetSysStats(context.Context, *SysStatsRequest) (*SysStatsResponse, error)
+	mustEmbedUnimplementedStatsServiceServer()
+}
+
+// UnimplementedStatsServiceServer must be embedded to have forward compatible implementations.
+type UnimplementedStatsServiceServer struct{}
+
+func (UnimplementedStatsServiceServer) GetStats(context.Context, *GetStatsRequest) (*GetStatsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetStats not implemented")
+}
+
+func (UnimplementedStatsServiceServer) QueryStats(context.Context, *QueryStatsRequest) (*QueryStatsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method QueryStats not implemented")
+}
+
+func (UnimplementedStatsServiceServer) GetSysStats(context.Context, *SysStatsRequest) (*SysStatsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetSysStats not implemented")
+}
+func (UnimplementedStatsServiceServer) mustEmbedUnimplementedStatsServiceServer() {}
+
+// UnsafeStatsServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to StatsServiceServer will
+// result in compilation errors.
+type UnsafeStatsServiceServer interface {
+	mustEmbedUnimplementedStatsServiceServer()
+}
+
+func RegisterStatsServiceServer(s grpc.ServiceRegistrar, srv StatsServiceServer) {
+	s.RegisterService(&StatsService_ServiceDesc, srv)
+}
+
+func _StatsService_GetStats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetStatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(StatsServiceServer).GetStats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/experimental.v2rayapi.StatsService/GetStats",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(StatsServiceServer).GetStats(ctx, req.(*GetStatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _StatsService_QueryStats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryStatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(StatsServiceServer).QueryStats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/experimental.v2rayapi.StatsService/QueryStats",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(StatsServiceServer).QueryStats(ctx, req.(*QueryStatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _StatsService_GetSysStats_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SysStatsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(StatsServiceServer).GetSysStats(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/experimental.v2rayapi.StatsService/GetSysStats",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(StatsServiceServer).GetSysStats(ctx, req.(*SysStatsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// StatsService_ServiceDesc is the grpc.ServiceDesc for StatsService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var StatsService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "experimental.v2rayapi.StatsService",
+	HandlerType: (*StatsServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetStats",
+			Handler:    _StatsService_GetStats_Handler,
+		},
+		{
+			MethodName: "QueryStats",
+			Handler:    _StatsService_QueryStats_Handler,
+		},
+		{
+			MethodName: "GetSysStats",
+			Handler:    _StatsService_GetSysStats_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "experimental/v2rayapi/stats.proto",
+}

go.mod

@@ -5,10 +5,10 @@ go 1.18
 require (
 	berty.tech/go-libtor v1.0.385
 	github.com/Dreamacro/clash v1.11.8
-	github.com/caddyserver/certmagic v0.17.1
+	github.com/caddyserver/certmagic v0.17.2
 	github.com/cloudflare/circl v1.2.1-0.20220831060716-4cf0150356fc
 	github.com/cretz/bine v0.2.0
-	github.com/database64128/tfo-go v1.1.2
+	github.com/database64128/tfo-go/v2 v2.0.1
 	github.com/dustin/go-humanize v1.0.0
 	github.com/fsnotify/fsnotify v1.5.4
 	github.com/go-chi/chi/v5 v5.0.7
@@ -23,21 +23,21 @@ require (
 	github.com/pires/go-proxyproto v0.6.2
 	github.com/refraction-networking/utls v1.1.2
 	github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb
-	github.com/sagernet/sing v0.0.0-20220915031330-38f39bc0c690
+	github.com/sagernet/sing v0.0.0-20221006081821-c4e9bf11fa00
-	github.com/sagernet/sing-dns v0.0.0-20220913115644-aebff1dfbba8
+	github.com/sagernet/sing-dns v0.0.0-20220929010544-ee843807aae3
 	github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6
-	github.com/sagernet/sing-tun v0.0.0-20220915032336-60b1da576469
+	github.com/sagernet/sing-tun v0.0.0-20221005115555-9a556307f6a3
-	github.com/sagernet/sing-vmess v0.0.0-20220913015714-c4ab86d40e12
+	github.com/sagernet/sing-vmess v0.0.0-20220925083655-063bc85ea685
 	github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195
 	github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e
 	github.com/spf13/cobra v1.5.0
 	github.com/stretchr/testify v1.8.0
 	go.etcd.io/bbolt v1.3.6
 	go.uber.org/atomic v1.10.0
-	go4.org/netipx v0.0.0-20220812043211-3cc044ffd68d
+	go4.org/netipx v0.0.0-20220925034521-797b0c90d8ab
-	golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90
+	golang.org/x/crypto v0.0.0-20221005025214-4161e89ecf1b
-	golang.org/x/net v0.0.0-20220909164309-bea034e7d591
+	golang.org/x/net v0.0.0-20221004154528-8021a29435af
-	golang.org/x/sys v0.0.0-20220913120320-3275c407cedc
+	golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec
 	golang.zx2c4.com/wireguard v0.0.0-20220829161405-d1d08426b27b
 	google.golang.org/grpc v1.49.0
 	google.golang.org/protobuf v1.28.1
@@ -56,7 +56,7 @@ require (
 	github.com/google/btree v1.0.1 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/klauspost/compress v1.13.6 // indirect
-	github.com/klauspost/cpuid/v2 v2.1.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.1.1 // indirect
 	github.com/libdns/libdns v0.2.1 // indirect
 	github.com/marten-seemann/qpack v0.2.1 // indirect
 	github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect
@@ -70,7 +70,7 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	go.uber.org/zap v1.22.0 // indirect
+	go.uber.org/zap v1.23.0 // indirect
 	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
 	golang.org/x/text v0.3.7 // indirect

go.sum

@@ -12,8 +12,8 @@ github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHG
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
-github.com/caddyserver/certmagic v0.17.1 h1:VrWANhQAj3brK7jAUKyN6XBHg56WsyorI/84Ilq1tCQ=
+github.com/caddyserver/certmagic v0.17.2 h1:o30seC1T/dBqBCNNGNHWwj2i5/I/FMjBbTAhjADP3nE=
-github.com/caddyserver/certmagic v0.17.1/go.mod h1:pSS2aZcdKlrTZrb2DKuRafckx20o5Fz1EdDKEB8KOQM=
+github.com/caddyserver/certmagic v0.17.2/go.mod h1:ouWUuC490GOLJzkyN35eXfV8bSbwMwSf4bdhkIxtdQE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cloudflare/circl v1.2.1-0.20220831060716-4cf0150356fc h1:307gdRLiZ08dwOIKwc5lAQ19DRFaQQvdhHalyB4Asx8=
@@ -25,8 +25,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/cretz/bine v0.1.0/go.mod h1:6PF6fWAvYtwjRGkAuDEJeWNOv3a2hUouSP/yRYXmvHw=
 github.com/cretz/bine v0.2.0 h1:8GiDRGlTgz+o8H9DSnsl+5MeBK4HsExxgl6WgzOCuZo=
 github.com/cretz/bine v0.2.0/go.mod h1:WU4o9QR9wWp8AVKtTM1XD5vUHkEqnf2vVSo6dBqbetI=
-github.com/database64128/tfo-go v1.1.2 h1:GwxtJp09BdUTVEoeT421t231eNZoGOCRkklbl4WI1kU=
+github.com/database64128/tfo-go/v2 v2.0.1 h1:VFfturVoq6NmPGfhXO1K15x82KR19aAfw1RYtTzyVv4=
-github.com/database64128/tfo-go v1.1.2/go.mod h1:jgrSUPyOvTGQyn6irCOpk7L2W/q/0VLZZcovQiMi+bI=
+github.com/database64128/tfo-go/v2 v2.0.1/go.mod h1:FDdt4JaAsRU66wsYHxSVytYimPkKIHupVsxM+5DhvjY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -90,8 +90,8 @@ github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANyt
 github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
-github.com/klauspost/cpuid/v2 v2.1.0 h1:eyi1Ad2aNJMW95zcSbmGg7Cg6cq3ADwLpMAP96d8rF0=
+github.com/klauspost/cpuid/v2 v2.1.1 h1:t0wUqjowdm8ezddV5k0tLWVklVuvLJpoHeb4WBdydm0=
-github.com/klauspost/cpuid/v2 v2.1.0/go.mod h1:RVVoqg1df56z8g3pUjL/3lE5UfnlrJX8tyFgg4nqhuY=
+github.com/klauspost/cpuid/v2 v2.1.1/go.mod h1:RVVoqg1df56z8g3pUjL/3lE5UfnlrJX8tyFgg4nqhuY=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -145,16 +145,16 @@ github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTY
 github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
 github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
-github.com/sagernet/sing v0.0.0-20220915031330-38f39bc0c690 h1:pvaLdkDmsGN2K46vf8rorAhYGFvKPuQNzcofuy3aXXg=
+github.com/sagernet/sing v0.0.0-20221006081821-c4e9bf11fa00 h1:UkgEDnH3L9eBxob+3AbE9wM4mjFnRLnaPjfLSNe+C74=
-github.com/sagernet/sing v0.0.0-20220915031330-38f39bc0c690/go.mod h1:x3NHUeJBQwV75L51zwmLKQdLtRvR+M4PmXkfQtU1vIY=
+github.com/sagernet/sing v0.0.0-20221006081821-c4e9bf11fa00/go.mod h1:zvgDYKI+vCAW9RyfyrKTgleI+DOa8lzHMPC7VZo3OL4=
-github.com/sagernet/sing-dns v0.0.0-20220913115644-aebff1dfbba8 h1:Iyfl+Rm5jcDvXuy/jpOBI3eu35ujci50tkqYHHwwg+8=
+github.com/sagernet/sing-dns v0.0.0-20220929010544-ee843807aae3 h1:AEdyJxEDFq38z0pBX/0MpikQapGMIch+1ADe9k1bJqU=
-github.com/sagernet/sing-dns v0.0.0-20220913115644-aebff1dfbba8/go.mod h1:bPVnJ5gJ0WmUfN1bJP9Cis0ab8SSByx6JVzyLJjDMwA=
+github.com/sagernet/sing-dns v0.0.0-20220929010544-ee843807aae3/go.mod h1:SrvWLfOSlnFmH32CWXicfilAGgIXR0VjrH6yRbuXYww=
 github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6 h1:JJfDeYYhWunvtxsU/mOVNTmFQmnzGx9dY034qG6G3g4=
 github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6/go.mod h1:EX3RbZvrwAkPI2nuGa78T2iQXmrkT+/VQtskjou42xM=
-github.com/sagernet/sing-tun v0.0.0-20220915032336-60b1da576469 h1:tvGUJsOqxZ3ofAY9undQfQ+JCWvmIwLpIOC+XaBFO88=
+github.com/sagernet/sing-tun v0.0.0-20221005115555-9a556307f6a3 h1:9Igu/lgB1na+YTSEX6/YtPugAlMRyxLCDb7X+I0gdAE=
-github.com/sagernet/sing-tun v0.0.0-20220915032336-60b1da576469/go.mod h1:5AhPUv9jWDQ3pv3Mj78SL/1TSjhoaj6WNASxRKLqXqM=
+github.com/sagernet/sing-tun v0.0.0-20221005115555-9a556307f6a3/go.mod h1:qbqV9lwcXJnj1Tw4we7oA6Z8zGE/kCXQBCzuhzRWVw8=
-github.com/sagernet/sing-vmess v0.0.0-20220913015714-c4ab86d40e12 h1:4HYGbTDDemgBVTmaspXbkgjJlXc3hYVjNxSddJndq8Y=
+github.com/sagernet/sing-vmess v0.0.0-20220925083655-063bc85ea685 h1:AZzFNRR/ZwMTceUQ1b/mxx6oyKqmFymdMn/yleJmoVM=
-github.com/sagernet/sing-vmess v0.0.0-20220913015714-c4ab86d40e12/go.mod h1:u66Vv7NHXJWfeAmhh7JuJp/cwxmuQlM56QoZ7B7Mmd0=
+github.com/sagernet/sing-vmess v0.0.0-20220925083655-063bc85ea685/go.mod h1:bwhAdSNET1X+j9DOXGj9NIQR39xgcWIk1rOQ9lLD+gM=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195 h1:5VBIbVw9q7aKbrFdT83mjkyvQ+VaRsQ6yflTepfln38=
 github.com/sagernet/smux v0.0.0-20220831015742-e0f1988e3195/go.mod h1:yedWtra8nyGJ+SyI+ziwuaGMzBatbB10P1IOOZbbSK8=
 github.com/sagernet/websocket v0.0.0-20220913015213-615516348b4e h1:7uw2njHFGE+VpWamge6o56j2RWk4omF6uLKKxMmcWvs=
@@ -186,18 +186,18 @@ go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ
 go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
 go.uber.org/zap v1.21.0/go.mod h1:wjWOCqI0f2ZZrJF/UufIOkiC8ii6tm1iqIsLo76RfJw=
-go.uber.org/zap v1.22.0 h1:Zcye5DUgBloQ9BaT4qc9BnjOFog5TvBSAGkJ3Nf70c0=
+go.uber.org/zap v1.23.0 h1:OjGQ5KQDEUawVHxNwQgPpiypGHOxo2mNZsOqTak4fFY=
-go.uber.org/zap v1.22.0/go.mod h1:H4siCOZOrAolnUPJEkfaSjDqyP+BDS0DdDWzwcgt3+U=
+go.uber.org/zap v1.23.0/go.mod h1:D+nX8jyLsMHMYrln8A0rJjFt/T/9/bGgIhAqxv5URuY=
-go4.org/netipx v0.0.0-20220812043211-3cc044ffd68d h1:ggxwEf5eu0l8v+87VhX1czFh8zJul3hK16Gmruxn7hw=
+go4.org/netipx v0.0.0-20220925034521-797b0c90d8ab h1:+yW1yrZ09EYNu1spCUOHBBNRbrLnfmutwyhbhCv3b6Q=
-go4.org/netipx v0.0.0-20220812043211-3cc044ffd68d/go.mod h1:tgPU4N2u9RByaTN3NC2p9xOzyFpte4jYwsIIRF7XlSc=
+go4.org/netipx v0.0.0-20220925034521-797b0c90d8ab/go.mod h1:tgPU4N2u9RByaTN3NC2p9xOzyFpte4jYwsIIRF7XlSc=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190404164418-38d8ce5564a5/go.mod h1:WFFai1msRO1wXaEeE5yQxYXgSfI8pQAWXbQop6sCtWE=
 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 v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 h1:Y/gsMcFOcR+6S6f3YeMKl5g+dZMEWqcz5Czj/GWYbkM=
+golang.org/x/crypto v0.0.0-20221005025214-4161e89ecf1b h1:huxqepDufQpLLIRXiVkTvnxrzJlpwmIWAObmcCcUFr0=
-golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20221005025214-4161e89ecf1b/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e h1:+WEEuIdZHnUeJJmEUjyYC2gfUMj69yZXw17EnHg/otA=
 golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
@@ -229,8 +229,8 @@ golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211111160137-58aab5ef257a/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220630215102-69896b714898/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.0.0-20220909164309-bea034e7d591 h1:D0B/7al0LLrVC8aWF4+oxpv/m8bc7ViFfVS8/gXGdqI=
+golang.org/x/net v0.0.0-20221004154528-8021a29435af h1:wv66FM3rLZGPdxpYL+ApnDe2HzHcTFta3z5nsc13wI4=
-golang.org/x/net v0.0.0-20220909164309-bea034e7d591/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
+golang.org/x/net v0.0.0-20221004154528-8021a29435af/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -264,8 +264,8 @@ golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220731174439-a90be440212d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220913120320-3275c407cedc h1:dpclq5m2YrqPGStKmtw7IcNbKLfbIqKXvNxDJKdIKYc=
+golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec h1:BkDtF2Ih9xZ7le9ndzTA7KJow28VbQW3odyk/8drmuI=
-golang.org/x/sys v0.0.0-20220913120320-3275c407cedc/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=

inbound/default.go

@@ -141,13 +141,13 @@ func (a *myInboundAdapter) createMetadata(conn net.Conn, metadata adapter.Inboun
 	metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
 	metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
 	if !metadata.Source.IsValid() {
-		metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
+		metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr()).Unwrap()
 	}
 	if !metadata.Destination.IsValid() {
-		metadata.Destination = M.SocksaddrFromNet(conn.LocalAddr())
+		metadata.Destination = M.SocksaddrFromNet(conn.LocalAddr()).Unwrap()
 	}
 	if tcpConn, isTCP := common.Cast[*net.TCPConn](conn); isTCP {
-		metadata.OriginDestination = M.SocksaddrFromNet(tcpConn.LocalAddr())
+		metadata.OriginDestination = M.SocksaddrFromNet(tcpConn.LocalAddr()).Unwrap()
 	}
 	return metadata
 }

inbound/default_tcp.go

@@ -12,7 +12,7 @@ import (
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 
-	"github.com/database64128/tfo-go"
+	"github.com/database64128/tfo-go/v2"
 )
 
 func (a *myInboundAdapter) ListenTCP() (net.Listener, error) {

inbound/default_udp.go

@@ -54,7 +54,7 @@ func (a *myInboundAdapter) loopUDPIn() {
 		metadata.SniffEnabled = a.listenOptions.SniffEnabled
 		metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
 		metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
-		metadata.Source = M.SocksaddrFromNetIP(addr)
+		metadata.Source = M.SocksaddrFromNetIP(addr).Unwrap()
 		metadata.OriginDestination = a.udpAddr
 		err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
 		if err != nil {
@@ -86,7 +86,7 @@ func (a *myInboundAdapter) loopUDPOOBIn() {
 		metadata.SniffEnabled = a.listenOptions.SniffEnabled
 		metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
 		metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
-		metadata.Source = M.SocksaddrFromNetIP(addr)
+		metadata.Source = M.SocksaddrFromNetIP(addr).Unwrap()
 		metadata.OriginDestination = a.udpAddr
 		err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
 		if err != nil {
@@ -112,7 +112,7 @@ func (a *myInboundAdapter) loopUDPInThreadSafe() {
 		metadata.SniffEnabled = a.listenOptions.SniffEnabled
 		metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
 		metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
-		metadata.Source = M.SocksaddrFromNetIP(addr)
+		metadata.Source = M.SocksaddrFromNetIP(addr).Unwrap()
 		metadata.OriginDestination = a.udpAddr
 		err = a.packetHandler.NewPacket(a.ctx, packetService, buffer, metadata)
 		if err != nil {
@@ -140,7 +140,7 @@ func (a *myInboundAdapter) loopUDPOOBInThreadSafe() {
 		metadata.SniffEnabled = a.listenOptions.SniffEnabled
 		metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
 		metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
-		metadata.Source = M.SocksaddrFromNetIP(addr)
+		metadata.Source = M.SocksaddrFromNetIP(addr).Unwrap()
 		metadata.OriginDestination = a.udpAddr
 		err = a.oobPacketHandler.NewPacket(a.ctx, packetService, buffer, oob[:oobN], metadata)
 		if err != nil {

inbound/http.go

@@ -72,8 +72,12 @@ func (h *HTTP) Close() error {
 }
 
 func (h *HTTP) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	var err error
 	if h.tlsConfig != nil {
-		conn = h.tlsConfig.Server(conn)
+		conn, err = tls.ServerHandshake(ctx, conn, h.tlsConfig)
+		if err != nil {
+			return err
+		}
 	}
 	return http.HandleConnection(ctx, conn, std_bufio.NewReader(conn), h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
 }

inbound/hysteria.go

@@ -261,9 +261,9 @@ func (h *Hysteria) acceptStream(ctx context.Context, conn quic.Connection, strea
 	metadata.SniffEnabled = h.listenOptions.SniffEnabled
 	metadata.SniffOverrideDestination = h.listenOptions.SniffOverrideDestination
 	metadata.DomainStrategy = dns.DomainStrategy(h.listenOptions.DomainStrategy)
-	metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
+	metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr()).Unwrap()
-	metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr())
+	metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr()).Unwrap()
-	metadata.Destination = M.ParseSocksaddrHostPort(request.Host, request.Port)
+	metadata.Destination = M.ParseSocksaddrHostPort(request.Host, request.Port).Unwrap()
 
 	if !request.UDP {
 		err = hysteria.WriteServerResponse(stream, hysteria.ServerResponse{

inbound/hysteria_stub.go

@@ -6,11 +6,11 @@ import (
 	"context"
 
 	"github.com/sagernet/sing-box/adapter"
-	I "github.com/sagernet/sing-box/include"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 )
 
 func NewHysteria(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.HysteriaInboundOptions) (adapter.Inbound, error) {
-	return nil, I.ErrQUICNotIncluded
+	return nil, C.ErrQUICNotIncluded
 }

inbound/naive_quic_stub.go

@@ -3,9 +3,9 @@
 package inbound
 
 import (
-	I "github.com/sagernet/sing-box/include"
+	C "github.com/sagernet/sing-box/constant"
 )
 
 func (n *Naive) configureHTTP3Listener() error {
-	return I.ErrQUICNotIncluded
+	return C.ErrQUICNotIncluded
 }

inbound/shadowtls.go

@@ -6,12 +6,17 @@ import (
 	"encoding/binary"
 	"io"
 	"net"
+	"os"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/shadowtls"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/buf"
+	"github.com/sagernet/sing/common/bufio"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
@@ -22,6 +27,8 @@ type ShadowTLS struct {
 	myInboundAdapter
 	handshakeDialer N.Dialer
 	handshakeAddr   M.Socksaddr
+	v2              bool
+	password        string
 }
 
 func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSInboundOptions) (*ShadowTLS, error) {
@@ -37,6 +44,16 @@ func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.Context
 		},
 		handshakeDialer: dialer.New(router, options.Handshake.DialerOptions),
 		handshakeAddr:   options.Handshake.ServerOptions.Build(),
+		password:        options.Password,
+	}
+	switch options.Version {
+	case 0:
+		fallthrough
+	case 1:
+	case 2:
+		inbound.v2 = true
+	default:
+		return nil, E.New("unknown shadowtls protocol version: ", options.Version)
 	}
 	inbound.connHandler = inbound
 	return inbound, nil
@@ -47,19 +64,39 @@ func (s *ShadowTLS) NewConnection(ctx context.Context, conn net.Conn, metadata a
 	if err != nil {
 		return err
 	}
-	var handshake task.Group
+	if !s.v2 {
-	handshake.Append("client handshake", func(ctx context.Context) error {
+		var handshake task.Group
-		return s.copyUntilHandshakeFinished(handshakeConn, conn)
+		handshake.Append("client handshake", func(ctx context.Context) error {
-	})
+			return s.copyUntilHandshakeFinished(handshakeConn, conn)
-	handshake.Append("server handshake", func(ctx context.Context) error {
+		})
-		return s.copyUntilHandshakeFinished(conn, handshakeConn)
+		handshake.Append("server handshake", func(ctx context.Context) error {
-	})
+			return s.copyUntilHandshakeFinished(conn, handshakeConn)
-	handshake.FastFail()
+		})
-	err = handshake.Run(ctx)
+		handshake.FastFail()
-	if err != nil {
+		handshake.Cleanup(func() {
-		return err
+			handshakeConn.Close()
+		})
+		err = handshake.Run(ctx)
+		if err != nil {
+			return err
+		}
+		return s.newConnection(ctx, conn, metadata)
+	} else {
+		hashConn := shadowtls.NewHashWriteConn(conn, s.password)
+		go bufio.Copy(hashConn, handshakeConn)
+		var request *buf.Buffer
+		request, err = s.copyUntilHandshakeFinishedV2(handshakeConn, conn, hashConn)
+		if err == nil {
+			handshakeConn.Close()
+			return s.newConnection(ctx, bufio.NewCachedConn(shadowtls.NewConn(conn), request), metadata)
+		} else if err == os.ErrPermission {
+			s.logger.WarnContext(ctx, "fallback connection")
+			hashConn.Fallback()
+			return common.Error(bufio.Copy(handshakeConn, conn))
+		} else {
+			return err
+		}
 	}
-	return s.newConnection(ctx, conn, metadata)
 }
 
 func (s *ShadowTLS) copyUntilHandshakeFinished(dst io.Writer, src io.Reader) error {
@@ -91,3 +128,39 @@ func (s *ShadowTLS) copyUntilHandshakeFinished(dst io.Writer, src io.Reader) err
 		}
 	}
 }
+
+func (s *ShadowTLS) copyUntilHandshakeFinishedV2(dst net.Conn, src io.Reader, hash *shadowtls.HashWriteConn) (*buf.Buffer, error) {
+	const applicationData = 0x17
+	var tlsHdr [5]byte
+	var applicationDataCount int
+	for {
+		_, err := io.ReadFull(src, tlsHdr[:])
+		if err != nil {
+			return nil, err
+		}
+		length := binary.BigEndian.Uint16(tlsHdr[3:])
+		if tlsHdr[0] == applicationData {
+			data := buf.NewSize(int(length))
+			_, err = data.ReadFullFrom(src, int(length))
+			if err != nil {
+				data.Release()
+				return nil, err
+			}
+			if length >= 8 && bytes.Equal(data.To(8), hash.Sum()) {
+				data.Advance(8)
+				return data, nil
+			}
+			_, err = io.Copy(dst, io.MultiReader(bytes.NewReader(tlsHdr[:]), data))
+			data.Release()
+			applicationDataCount++
+		} else {
+			_, err = io.Copy(dst, io.MultiReader(bytes.NewReader(tlsHdr[:]), io.LimitReader(src, int64(length))))
+		}
+		if err != nil {
+			return nil, err
+		}
+		if applicationDataCount > 3 {
+			return nil, os.ErrPermission
+		}
+	}
+}

inbound/tproxy.go

@@ -75,7 +75,7 @@ func (t *TProxy) Start() error {
 }
 
 func (t *TProxy) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
-	metadata.Destination = M.SocksaddrFromNet(conn.LocalAddr())
+	metadata.Destination = M.SocksaddrFromNet(conn.LocalAddr()).Unwrap()
 	return t.newConnection(ctx, conn, metadata)
 }
 
@@ -84,14 +84,15 @@ func (t *TProxy) NewPacket(ctx context.Context, conn N.PacketConn, buffer *buf.B
 	if err != nil {
 		return E.Cause(err, "get tproxy destination")
 	}
-	metadata.Destination = M.SocksaddrFromNetIP(destination)
+	metadata.Destination = M.SocksaddrFromNetIP(destination).Unwrap()
 	t.udpNat.NewContextPacket(ctx, metadata.Source.AddrPort(), buffer, adapter.UpstreamMetadata(metadata), func(natConn N.PacketConn) (context.Context, N.PacketWriter) {
-		return adapter.WithContext(log.ContextWithNewID(ctx), &metadata), &tproxyPacketWriter{source: natConn}
+		return adapter.WithContext(log.ContextWithNewID(ctx), &metadata), &tproxyPacketWriter{ctx: ctx, source: natConn, destination: metadata.Destination}
 	})
 	return nil
 }
 
 type tproxyPacketWriter struct {
+	ctx         context.Context
 	source      N.PacketConn
 	destination M.Socksaddr
 	conn        *net.UDPConn
@@ -99,25 +100,27 @@ type tproxyPacketWriter struct {
 
 func (w *tproxyPacketWriter) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
 	defer buffer.Release()
-	var udpConn *net.UDPConn
+	if w.destination == destination && w.conn != nil {
+		_, err := w.conn.WriteToUDPAddrPort(buffer.Bytes(), M.AddrPortFromNet(w.source.LocalAddr()))
+		if err == nil {
+			w.conn = nil
+		}
+		return err
+	}
+	var listener net.ListenConfig
+	listener.Control = control.Append(listener.Control, control.ReuseAddr())
+	listener.Control = control.Append(listener.Control, redir.TProxyWriteBack())
+	packetConn, err := listener.ListenPacket(w.ctx, "udp", destination.String())
+	if err != nil {
+		return err
+	}
+	udpConn := packetConn.(*net.UDPConn)
 	if w.destination == destination {
-		if w.conn != nil {
+		w.conn = udpConn
-			udpConn = w.conn
+	} else {
-		}
+		defer udpConn.Close()
 	}
-	if udpConn == nil {
+	return common.Error(udpConn.WriteToUDPAddrPort(buffer.Bytes(), M.AddrPortFromNet(w.source.LocalAddr())))
-		var err error
-		udpConn, err = redir.DialUDP(destination.UDPAddr(), M.SocksaddrFromNet(w.source.LocalAddr()).UDPAddr())
-		if err != nil {
-			return E.Cause(err, "tproxy udp write back")
-		}
-		if w.destination == destination {
-			w.conn = udpConn
-		} else {
-			defer udpConn.Close()
-		}
-	}
-	return common.Error(udpConn.Write(buffer.Bytes()))
 }
 
 func (w *tproxyPacketWriter) Close() error {

inbound/trojan.go

@@ -150,8 +150,12 @@ func (h *Trojan) newTransportConnection(ctx context.Context, conn net.Conn, meta
 }
 
 func (h *Trojan) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	var err error
 	if h.tlsConfig != nil && h.transport == nil {
-		conn = h.tlsConfig.Server(conn)
+		conn, err = tls.ServerHandshake(ctx, conn, h.tlsConfig)
+		if err != nil {
+			return err
+		}
 	}
 	return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
 }
@@ -178,7 +182,7 @@ func (h *Trojan) newConnection(ctx context.Context, conn net.Conn, metadata adap
 func (h *Trojan) fallbackConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
 	var fallbackAddr M.Socksaddr
 	if len(h.fallbackAddrTLSNextProto) > 0 {
-		if tlsConn, loaded := common.Cast[*tls.STDConn](conn); loaded {
+		if tlsConn, loaded := common.Cast[tls.Conn](conn); loaded {
 			connectionState := tlsConn.ConnectionState()
 			if connectionState.NegotiatedProtocol != "" {
 				if fallbackAddr, loaded = h.fallbackAddrTLSNextProto[connectionState.NegotiatedProtocol]; !loaded {
@@ -188,6 +192,9 @@ func (h *Trojan) fallbackConnection(ctx context.Context, conn net.Conn, metadata
 		}
 	}
 	if !fallbackAddr.IsValid() {
+		if !h.fallbackAddr.IsValid() {
+			return E.New("fallback disabled by default")
+		}
 		fallbackAddr = h.fallbackAddr
 	}
 	h.logger.InfoContext(ctx, "fallback connection to ", fallbackAddr)

inbound/tun.go

@@ -190,7 +190,7 @@ func (t *Tun) NewConnection(ctx context.Context, conn net.Conn, upstreamMetadata
 	if err != nil {
 		t.NewError(ctx, err)
 	}
-	return err
+	return nil
 }
 
 func (t *Tun) NewPacketConnection(ctx context.Context, conn N.PacketConn, upstreamMetadata M.Metadata) error {
@@ -212,7 +212,7 @@ func (t *Tun) NewPacketConnection(ctx context.Context, conn N.PacketConn, upstre
 	if err != nil {
 		t.NewError(ctx, err)
 	}
-	return err
+	return nil
 }
 
 func (t *Tun) NewError(ctx context.Context, err error) {

inbound/vmess.go

@@ -130,8 +130,12 @@ func (h *VMess) newTransportConnection(ctx context.Context, conn net.Conn, metad
 }
 
 func (h *VMess) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	var err error
 	if h.tlsConfig != nil && h.transport == nil {
-		conn = h.tlsConfig.Server(conn)
+		conn, err = tls.ServerHandshake(ctx, conn, h.tlsConfig)
+		if err != nil {
+			return err
+		}
 	}
 	return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
 }

include/clashapi.go

@@ -0,0 +1,5 @@
+//go:build with_clash_api
+
+package include
+
+import _ "github.com/sagernet/sing-box/experimental/clashapi"

include/clashapi_stub.go

@@ -0,0 +1,17 @@
+//go:build !with_clash_api
+
+package include
+
+import (
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/experimental"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func init() {
+	experimental.RegisterClashServerConstructor(func(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
+		return nil, E.New(`clash api is not included in this build, rebuild with -tags with_clash_api`)
+	})
+}

include/quic.go

@@ -2,6 +2,9 @@
 
 package include
 
-import _ "github.com/sagernet/sing-dns/quic"
+import (
+	_ "github.com/sagernet/sing-box/transport/v2rayquic"
+	_ "github.com/sagernet/sing-dns/quic"
+)
 
 const WithQUIC = true

include/quic_stub.go

@@ -5,17 +5,29 @@ package include
 import (
 	"context"
 
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/tls"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/v2ray"
 	"github.com/sagernet/sing-dns"
 	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 )
 
 const WithQUIC = false
 
-var ErrQUICNotIncluded = E.New(`QUIC is not included in this build, rebuild with -tags with_quic`)
-
 func init() {
 	dns.RegisterTransport([]string{"quic", "h3"}, func(ctx context.Context, dialer N.Dialer, link string) (dns.Transport, error) {
-		return nil, ErrQUICNotIncluded
+		return nil, C.ErrQUICNotIncluded
 	})
+	v2ray.RegisterQUICConstructor(
+		func(ctx context.Context, options option.V2RayQUICOptions, tlsConfig tls.Config, handler N.TCPConnectionHandler, errorHandler E.Handler) (adapter.V2RayServerTransport, error) {
+			return nil, C.ErrQUICNotIncluded
+		},
+		func(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayQUICOptions, tlsConfig tls.Config) (adapter.V2RayClientTransport, error) {
+			return nil, C.ErrQUICNotIncluded
+		},
+	)
 }

include/v2rayapi.go

@@ -0,0 +1,5 @@
+//go:build with_v2ray_api
+
+package include
+
+import _ "github.com/sagernet/sing-box/experimental/v2rayapi"

include/v2rayapi_stub.go

@@ -0,0 +1,17 @@
+//go:build !with_v2ray_api
+
+package include
+
+import (
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/experimental"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func init() {
+	experimental.RegisterV2RayServerConstructor(func(logger log.Logger, options option.V2RayAPIOptions) (adapter.V2RayServer, error) {
+		return nil, E.New(`v2ray api is not included in this build, rebuild with -tags with_v2ray_api`)
+	})
+}

mkdocs.yml

@@ -90,6 +90,7 @@ nav:
           - SSH: configuration/outbound/ssh.md
           - DNS: configuration/outbound/dns.md
           - Selector: configuration/outbound/selector.md
+          - URLTest: configuration/outbound/urltest.md
   - FAQ:
       - faq/index.md
       - Known Issues: faq/known-issues.md

option/clash.go

@@ -4,13 +4,20 @@ type ClashAPIOptions struct {
 	ExternalController string `json:"external_controller,omitempty"`
 	ExternalUI         string `json:"external_ui,omitempty"`
 	Secret             string `json:"secret,omitempty"`
-
+	DirectIO           bool   `json:"direct_io,omitempty"`
-	DefaultMode   string `json:"default_mode,omitempty"`
+	DefaultMode        string `json:"default_mode,omitempty"`
-	StoreSelected bool   `json:"store_selected,omitempty"`
+	StoreSelected      bool   `json:"store_selected,omitempty"`
-	CacheFile     string `json:"cache_file,omitempty"`
+	CacheFile          string `json:"cache_file,omitempty"`
 }
 
 type SelectorOutboundOptions struct {
 	Outbounds []string `json:"outbounds"`
 	Default   string   `json:"default,omitempty"`
 }
+
+type URLTestOutboundOptions struct {
+	Outbounds []string `json:"outbounds"`
+	URL       string   `json:"url,omitempty"`
+	Interval  Duration `json:"interval,omitempty"`
+	Tolerance uint16   `json:"tolerance,omitempty"`
+}

option/experimental.go

@@ -2,4 +2,5 @@ package option
 
 type ExperimentalOptions struct {
 	ClashAPI *ClashAPIOptions `json:"clash_api,omitempty"`
+	V2RayAPI *V2RayAPIOptions `json:"v2ray_api,omitempty"`
 }

option/outbound.go

@@ -24,6 +24,7 @@ type _Outbound struct {
 	ShadowsocksROptions ShadowsocksROutboundOptions `json:"-"`
 	VLESSOptions        VLESSOutboundOptions        `json:"-"`
 	SelectorOptions     SelectorOutboundOptions     `json:"-"`
+	URLTestOptions      URLTestOutboundOptions      `json:"-"`
 }
 
 type Outbound _Outbound
@@ -61,6 +62,8 @@ func (h Outbound) MarshalJSON() ([]byte, error) {
 		v = h.VLESSOptions
 	case C.TypeSelector:
 		v = h.SelectorOptions
+	case C.TypeURLTest:
+		v = h.URLTestOptions
 	default:
 		return nil, E.New("unknown outbound type: ", h.Type)
 	}
@@ -104,6 +107,8 @@ func (h *Outbound) UnmarshalJSON(bytes []byte) error {
 		v = &h.VLESSOptions
 	case C.TypeSelector:
 		v = &h.SelectorOptions
+	case C.TypeURLTest:
+		v = &h.URLTestOptions
 	default:
 		return E.New("unknown outbound type: ", h.Type)
 	}
@@ -115,17 +120,18 @@ func (h *Outbound) UnmarshalJSON(bytes []byte) error {
 }
 
 type DialerOptions struct {
-	Detour         string         `json:"detour,omitempty"`
+	Detour             string         `json:"detour,omitempty"`
-	BindInterface  string         `json:"bind_interface,omitempty"`
+	BindInterface      string         `json:"bind_interface,omitempty"`
-	BindAddress    *ListenAddress `json:"bind_address,omitempty"`
+	BindAddress        *ListenAddress `json:"bind_address,omitempty"`
-	ProtectPath    string         `json:"protect_path,omitempty"`
+	ProtectPath        string         `json:"protect_path,omitempty"`
-	RoutingMark    int            `json:"routing_mark,omitempty"`
+	RoutingMark        int            `json:"routing_mark,omitempty"`
-	ReuseAddr      bool           `json:"reuse_addr,omitempty"`
+	ReuseAddr          bool           `json:"reuse_addr,omitempty"`
-	ConnectTimeout Duration       `json:"connect_timeout,omitempty"`
+	ConnectTimeout     Duration       `json:"connect_timeout,omitempty"`
-	TCPFastOpen    bool           `json:"tcp_fast_open,omitempty"`
+	TCPFastOpen        bool           `json:"tcp_fast_open,omitempty"`
-	UDPFragment    bool           `json:"udp_fragment,omitempty"`
+	UDPFragment        *bool          `json:"udp_fragment,omitempty"`
-	DomainStrategy DomainStrategy `json:"domain_strategy,omitempty"`
+	UDPFragmentDefault bool           `json:"-"`
-	FallbackDelay  Duration       `json:"fallback_delay,omitempty"`
+	DomainStrategy     DomainStrategy `json:"domain_strategy,omitempty"`
+	FallbackDelay      Duration       `json:"fallback_delay,omitempty"`
 }
 
 type ServerOptions struct {

option/shadowtls.go

@@ -2,6 +2,8 @@ package option
 
 type ShadowTLSInboundOptions struct {
 	ListenOptions
+	Version   int                       `json:"version,omitempty"`
+	Password  string                    `json:"password,omitempty"`
 	Handshake ShadowTLSHandshakeOptions `json:"handshake"`
 }
 
@@ -13,5 +15,7 @@ type ShadowTLSHandshakeOptions struct {
 type ShadowTLSOutboundOptions struct {
 	DialerOptions
 	ServerOptions
-	TLS *OutboundTLSOptions `json:"tls,omitempty"`
+	Version  int                 `json:"version,omitempty"`
+	Password string              `json:"password,omitempty"`
+	TLS      *OutboundTLSOptions `json:"tls,omitempty"`
 }

option/tls.go

@@ -3,6 +3,7 @@ package option
 type InboundTLSOptions struct {
 	Enabled         bool                `json:"enabled,omitempty"`
 	ServerName      string              `json:"server_name,omitempty"`
+	Insecure        bool                `json:"insecure,omitempty"`
 	ALPN            Listable[string]    `json:"alpn,omitempty"`
 	MinVersion      string              `json:"min_version,omitempty"`
 	MaxVersion      string              `json:"max_version,omitempty"`

option/v2ray.go

@@ -0,0 +1,13 @@
+package option
+
+type V2RayAPIOptions struct {
+	Listen string                    `json:"listen,omitempty"`
+	Stats  *V2RayStatsServiceOptions `json:"stats,omitempty"`
+}
+
+type V2RayStatsServiceOptions struct {
+	Enabled   bool     `json:"enabled,omitempty"`
+	DirectIO  bool     `json:"direct_io,omitempty"`
+	Inbounds  []string `json:"inbounds,omitempty"`
+	Outbounds []string `json:"outbounds,omitempty"`
+}

option/vmess.go

@@ -23,7 +23,7 @@ type VMessOutboundOptions struct {
 	AuthenticatedLength bool                   `json:"authenticated_length,omitempty"`
 	Network             NetworkList            `json:"network,omitempty"`
 	TLS                 *OutboundTLSOptions    `json:"tls,omitempty"`
-	PacketAddr          bool                   `json:"packet_addr,omitempty"`
+	PacketEncoding      string                 `json:"packet_encoding,omitempty"`
 	Multiplex           *MultiplexOptions      `json:"multiplex,omitempty"`
 	Transport           *V2RayTransportOptions `json:"transport,omitempty"`
 }

outbound/builder.go

@@ -47,6 +47,8 @@ func New(ctx context.Context, router adapter.Router, logger log.ContextLogger, o
 		return NewVLESS(ctx, router, logger, options.Tag, options.VLESSOptions)
 	case C.TypeSelector:
 		return NewSelector(router, logger, options.Tag, options.SelectorOptions)
+	case C.TypeURLTest:
+		return NewURLTest(router, logger, options.Tag, options.URLTestOptions)
 	default:
 		return nil, E.New("unknown outbound type: ", options.Type)
 	}

outbound/direct.go

@@ -35,6 +35,7 @@ type Direct struct {
 }
 
 func NewDirect(router adapter.Router, logger log.ContextLogger, tag string, options option.DirectOutboundOptions) (*Direct, error) {
+	options.UDPFragmentDefault = true
 	outbound := &Direct{
 		myOutboundAdapter: myOutboundAdapter{
 			protocol: C.TypeDirect,

outbound/hysteria.go

@@ -38,6 +38,7 @@ type Hysteria struct {
 	recvBPS      uint64
 	connAccess   sync.Mutex
 	conn         quic.Connection
+	rawConn      net.Conn
 	udpAccess    sync.RWMutex
 	udpSessions  map[uint32]chan *hysteria.UDPMessage
 	udpDefragger hysteria.Defragger
@@ -149,7 +150,6 @@ func (h *Hysteria) offer(ctx context.Context) (quic.Connection, error) {
 	if err != nil {
 		return nil, err
 	}
-	h.conn = conn
 	if common.Contains(h.network, N.NetworkUDP) {
 		for _, session := range h.udpSessions {
 			close(session)
@@ -201,6 +201,8 @@ func (h *Hysteria) offerNew(ctx context.Context) (quic.Connection, error) {
 		return nil, E.New("remote error: ", serverHello.Message)
 	}
 	quicConn.SetCongestionControl(hysteria.NewBrutalSender(congestion.ByteCount(serverHello.RecvBPS)))
+	h.conn = quicConn
+	h.rawConn = udpConn
 	return quicConn, nil
 }
 
@@ -240,6 +242,7 @@ func (h *Hysteria) Close() error {
 	defer h.udpAccess.Unlock()
 	if h.conn != nil {
 		h.conn.CloseWithError(0, "")
+		h.rawConn.Close()
 	}
 	for _, session := range h.udpSessions {
 		close(session)

outbound/hysteria_stub.go

@@ -6,11 +6,11 @@ import (
 	"context"
 
 	"github.com/sagernet/sing-box/adapter"
-	I "github.com/sagernet/sing-box/include"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 )
 
 func NewHysteria(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.HysteriaOutboundOptions) (adapter.Outbound, error) {
-	return nil, I.ErrQUICNotIncluded
+	return nil, C.ErrQUICNotIncluded
 }

outbound/shadowtls.go

@@ -11,7 +11,9 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/shadowtls"
 	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 )
@@ -23,6 +25,8 @@ type ShadowTLS struct {
 	dialer     N.Dialer
 	serverAddr M.Socksaddr
 	tlsConfig  tls.Config
+	v2         bool
+	password   string
 }
 
 func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSOutboundOptions) (*ShadowTLS, error) {
@@ -36,12 +40,22 @@ func NewShadowTLS(ctx context.Context, router adapter.Router, logger log.Context
 		},
 		dialer:     dialer.New(router, options.DialerOptions),
 		serverAddr: options.ServerOptions.Build(),
+		password:   options.Password,
 	}
 	if options.TLS == nil || !options.TLS.Enabled {
 		return nil, C.ErrTLSRequired
 	}
-	options.TLS.MinVersion = "1.2"
+	switch options.Version {
-	options.TLS.MaxVersion = "1.2"
+	case 0:
+		fallthrough
+	case 1:
+		options.TLS.MinVersion = "1.2"
+		options.TLS.MaxVersion = "1.2"
+	case 2:
+		outbound.v2 = true
+	default:
+		return nil, E.New("unknown shadowtls protocol version: ", options.Version)
+	}
 	var err error
 	outbound.tlsConfig, err = tls.NewClient(router, options.Server, common.PtrValueOrDefault(options.TLS))
 	if err != nil {
@@ -60,11 +74,20 @@ func (s *ShadowTLS) DialContext(ctx context.Context, network string, destination
 	if err != nil {
 		return nil, err
 	}
-	_, err = tls.ClientHandshake(ctx, conn, s.tlsConfig)
+	if !s.v2 {
-	if err != nil {
+		_, err = tls.ClientHandshake(ctx, conn, s.tlsConfig)
-		return nil, err
+		if err != nil {
+			return nil, err
+		}
+		return conn, nil
+	} else {
+		hashConn := shadowtls.NewHashReadConn(conn, s.password)
+		_, err = tls.ClientHandshake(ctx, hashConn, s.tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+		return shadowtls.NewClientConn(hashConn), nil
 	}
-	return conn, nil
 }
 
 func (s *ShadowTLS) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {

outbound/socks.go

@@ -74,7 +74,7 @@ func (h *Socks) DialContext(ctx context.Context, network string, destination M.S
 	default:
 		return nil, E.Extend(N.ErrUnknownNetwork, network)
 	}
-	if destination.IsFqdn() {
+	if h.resolve && destination.IsFqdn() {
 		addrs, err := h.router.LookupDefault(ctx, destination.Fqdn)
 		if err != nil {
 			return nil, err

outbound/trojan.go

@@ -103,6 +103,10 @@ func (h *Trojan) NewPacketConnection(ctx context.Context, conn N.PacketConn, met
 	return NewPacketConnection(ctx, h, conn, metadata)
 }
 
+func (h *Trojan) Close() error {
+	return common.Close(h.multiplexDialer, h.transport)
+}
+
 type trojanDialer Trojan
 
 func (h *trojanDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {

outbound/urltest.go

@@ -0,0 +1,287 @@
+package outbound
+
+import (
+	"context"
+	"net"
+	"sort"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/urltest"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/batch"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+var (
+	_ adapter.Outbound      = (*URLTest)(nil)
+	_ adapter.OutboundGroup = (*URLTest)(nil)
+)
+
+type URLTest struct {
+	myOutboundAdapter
+	tags      []string
+	link      string
+	interval  time.Duration
+	tolerance uint16
+	group     *URLTestGroup
+}
+
+func NewURLTest(router adapter.Router, logger log.ContextLogger, tag string, options option.URLTestOutboundOptions) (*URLTest, error) {
+	outbound := &URLTest{
+		myOutboundAdapter: myOutboundAdapter{
+			protocol: C.TypeURLTest,
+			router:   router,
+			logger:   logger,
+			tag:      tag,
+		},
+		tags:      options.Outbounds,
+		link:      options.URL,
+		interval:  time.Duration(options.Interval),
+		tolerance: options.Tolerance,
+	}
+	if len(outbound.tags) == 0 {
+		return nil, E.New("missing tags")
+	}
+	return outbound, nil
+}
+
+func (s *URLTest) Network() []string {
+	if s.group == nil {
+		return []string{N.NetworkTCP, N.NetworkUDP}
+	}
+	return s.group.Select(N.NetworkTCP).Network()
+}
+
+func (s *URLTest) Start() error {
+	outbounds := make([]adapter.Outbound, 0, len(s.tags))
+	for i, tag := range s.tags {
+		detour, loaded := s.router.Outbound(tag)
+		if !loaded {
+			return E.New("outbound ", i, " not found: ", tag)
+		}
+		outbounds = append(outbounds, detour)
+	}
+	s.group = NewURLTestGroup(s.router, s.logger, outbounds, s.link, s.interval, s.tolerance)
+	return s.group.Start()
+}
+
+func (s URLTest) Close() error {
+	return common.Close(
+		common.PtrOrNil(s.group),
+	)
+}
+
+func (s *URLTest) Now() string {
+	return s.group.Select(N.NetworkTCP).Tag()
+}
+
+func (s *URLTest) All() []string {
+	return s.tags
+}
+
+func (s *URLTest) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	outbound := s.group.Select(network)
+	conn, err := outbound.DialContext(ctx, network, destination)
+	if err == nil {
+		return conn, nil
+	}
+	s.logger.ErrorContext(ctx, err)
+	go s.group.checkOutbounds()
+	outbounds := s.group.Fallback(outbound)
+	for _, fallback := range outbounds {
+		conn, err = fallback.DialContext(ctx, network, destination)
+		if err == nil {
+			return conn, nil
+		}
+	}
+	return nil, err
+}
+
+func (s *URLTest) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	outbound := s.group.Select(N.NetworkUDP)
+	conn, err := outbound.ListenPacket(ctx, destination)
+	if err == nil {
+		return conn, nil
+	}
+	s.logger.ErrorContext(ctx, err)
+	go s.group.checkOutbounds()
+	outbounds := s.group.Fallback(outbound)
+	for _, fallback := range outbounds {
+		conn, err = fallback.ListenPacket(ctx, destination)
+		if err == nil {
+			return conn, nil
+		}
+	}
+	return nil, err
+}
+
+func (s *URLTest) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	return NewConnection(ctx, s, conn, metadata)
+}
+
+func (s *URLTest) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
+	return NewPacketConnection(ctx, s, conn, metadata)
+}
+
+type URLTestGroup struct {
+	router    adapter.Router
+	logger    log.Logger
+	outbounds []adapter.Outbound
+	link      string
+	interval  time.Duration
+	tolerance uint16
+	history   *urltest.HistoryStorage
+
+	ticker *time.Ticker
+	close  chan struct{}
+}
+
+func NewURLTestGroup(router adapter.Router, logger log.Logger, outbounds []adapter.Outbound, link string, interval time.Duration, tolerance uint16) *URLTestGroup {
+	if link == "" {
+		//goland:noinspection HttpUrlsUsage
+		link = "http://www.gstatic.com/generate_204"
+	}
+	if interval == 0 {
+		interval = C.DefaultURLTestInterval
+	}
+	if tolerance == 0 {
+		tolerance = 50
+	}
+	var history *urltest.HistoryStorage
+	if clashServer := router.ClashServer(); clashServer != nil {
+		history = clashServer.HistoryStorage()
+	} else {
+		history = urltest.NewHistoryStorage()
+	}
+	return &URLTestGroup{
+		router:    router,
+		logger:    logger,
+		outbounds: outbounds,
+		link:      link,
+		interval:  interval,
+		tolerance: tolerance,
+		history:   history,
+		close:     make(chan struct{}),
+	}
+}
+
+func (g *URLTestGroup) Start() error {
+	g.ticker = time.NewTicker(g.interval)
+	go g.loopCheck()
+	return nil
+}
+
+func (g *URLTestGroup) Close() error {
+	g.ticker.Stop()
+	close(g.close)
+	return nil
+}
+
+func (g *URLTestGroup) Select(network string) adapter.Outbound {
+	var minDelay uint16
+	var minTime time.Time
+	var minOutbound adapter.Outbound
+	for _, detour := range g.outbounds {
+		if !common.Contains(detour.Network(), network) {
+			continue
+		}
+		history := g.history.LoadURLTestHistory(RealTag(detour))
+		if history == nil {
+			continue
+		}
+		if minDelay == 0 || minDelay > history.Delay+g.tolerance || minDelay > history.Delay-g.tolerance && minTime.Before(history.Time) {
+			minDelay = history.Delay
+			minTime = history.Time
+			minOutbound = detour
+		}
+	}
+	if minOutbound == nil {
+		for _, detour := range g.outbounds {
+			if !common.Contains(detour.Network(), network) {
+				continue
+			}
+			minOutbound = detour
+			break
+		}
+	}
+	return minOutbound
+}
+
+func (g *URLTestGroup) Fallback(used adapter.Outbound) []adapter.Outbound {
+	outbounds := make([]adapter.Outbound, 0, len(g.outbounds)-1)
+	for _, detour := range g.outbounds {
+		if detour != used {
+			outbounds = append(outbounds, detour)
+		}
+	}
+	sort.Slice(outbounds, func(i, j int) bool {
+		oi := outbounds[i]
+		oj := outbounds[j]
+		hi := g.history.LoadURLTestHistory(RealTag(oi))
+		if hi == nil {
+			return false
+		}
+		hj := g.history.LoadURLTestHistory(RealTag(oj))
+		if hj == nil {
+			return false
+		}
+		return hi.Delay < hj.Delay
+	})
+	return outbounds
+}
+
+func (g *URLTestGroup) loopCheck() {
+	go g.checkOutbounds()
+	for {
+		select {
+		case <-g.close:
+			return
+		case <-g.ticker.C:
+			g.checkOutbounds()
+		}
+	}
+}
+
+func (g *URLTestGroup) checkOutbounds() {
+	b, _ := batch.New(context.Background(), batch.WithConcurrencyNum[any](10))
+	checked := make(map[string]bool)
+	for _, detour := range g.outbounds {
+		tag := detour.Tag()
+		realTag := RealTag(detour)
+		if checked[realTag] {
+			continue
+		}
+		history := g.history.LoadURLTestHistory(realTag)
+		if history != nil && time.Now().Sub(history.Time) < g.interval {
+			continue
+		}
+		checked[realTag] = true
+		p, loaded := g.router.Outbound(realTag)
+		if !loaded {
+			continue
+		}
+		b.Go(realTag, func() (any, error) {
+			ctx, cancel := context.WithTimeout(context.Background(), C.TCPTimeout)
+			defer cancel()
+			t, err := urltest.URLTest(ctx, g.link, p)
+			if err != nil {
+				g.logger.Debug("outbound ", tag, " unavailable: ", err)
+				g.history.DeleteURLTestHistory(realTag)
+			} else {
+				g.logger.Debug("outbound ", tag, " available: ", t, "ms")
+				g.history.StoreURLTestHistory(realTag, &urltest.History{
+					Time:  time.Now(),
+					Delay: t,
+				})
+			}
+			return nil, nil
+		})
+	}
+	b.Wait()
+}

outbound/vless.go

@@ -11,8 +11,9 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-box/transport/v2ray"
-	"github.com/sagernet/sing-box/transport/vless"
+	"github.com/sagernet/sing-dns"
 	"github.com/sagernet/sing-vmess/packetaddr"
+	"github.com/sagernet/sing-vmess/vless"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
@@ -73,10 +74,6 @@ func NewVLESS(ctx context.Context, router adapter.Router, logger log.ContextLogg
 	return outbound, nil
 }
 
-func (h *VLESS) Close() error {
-	return common.Close(h.transport)
-}
-
 func (h *VLESS) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	ctx, metadata := adapter.AppendContext(ctx)
 	metadata.Outbound = h.tag
@@ -104,7 +101,7 @@ func (h *VLESS) DialContext(ctx context.Context, network string, destination M.S
 		return h.client.DialEarlyConn(conn, destination), nil
 	case N.NetworkUDP:
 		h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
-		return h.client.DialPacketConn(conn, destination), nil
+		return h.client.DialEarlyPacketConn(conn, destination), nil
 	default:
 		return nil, E.Extend(N.ErrUnknownNetwork, network)
 	}
@@ -129,11 +126,11 @@ func (h *VLESS) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.
 		return nil, err
 	}
 	if h.xudp {
-		return h.client.DialXUDPPacketConn(conn, destination), nil
+		return h.client.DialEarlyXUDPPacketConn(conn, destination), nil
 	} else if h.packetAddr {
-		return packetaddr.NewConn(h.client.DialPacketConn(conn, M.Socksaddr{Fqdn: packetaddr.SeqPacketMagicAddress}), destination), nil
+		return dialer.NewResolvePacketConn(ctx, h.router, dns.DomainStrategyAsIS, packetaddr.NewConn(h.client.DialEarlyPacketConn(conn, M.Socksaddr{Fqdn: packetaddr.SeqPacketMagicAddress}), destination)), nil
 	} else {
-		return h.client.DialPacketConn(conn, destination), nil
+		return h.client.DialEarlyPacketConn(conn, destination), nil
 	}
 }
 
@@ -144,3 +141,7 @@ func (h *VLESS) NewConnection(ctx context.Context, conn net.Conn, metadata adapt
 func (h *VLESS) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
 	return NewPacketConnection(ctx, h, conn, metadata)
 }
+
+func (h *VLESS) Close() error {
+	return common.Close(h.transport)
+}

outbound/vmess.go

@@ -12,6 +12,7 @@ import (
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-box/transport/v2ray"
+	"github.com/sagernet/sing-dns"
 	"github.com/sagernet/sing-vmess"
 	"github.com/sagernet/sing-vmess/packetaddr"
 	"github.com/sagernet/sing/common"
@@ -31,6 +32,7 @@ type VMess struct {
 	tlsConfig       tls.Config
 	transport       adapter.V2RayClientTransport
 	packetAddr      bool
+	xudp            bool
 }
 
 func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.VMessOutboundOptions) (*VMess, error) {
@@ -62,8 +64,14 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 	if err != nil {
 		return nil, err
 	}
-	if outbound.multiplexDialer == nil && options.PacketAddr {
+	switch options.PacketEncoding {
+	case "":
+	case "packetaddr":
 		outbound.packetAddr = true
+	case "xudp":
+		outbound.xudp = true
+	default:
+		return nil, E.New("unknown packet encoding: ", options.PacketEncoding)
 	}
 	var clientOptions []vmess.ClientOption
 	if options.GlobalPadding {
@@ -88,7 +96,7 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 }
 
 func (h *VMess) Close() error {
-	return common.Close(h.transport)
+	return common.Close(h.multiplexDialer, h.transport)
 }
 
 func (h *VMess) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
@@ -176,7 +184,9 @@ func (h *vmessDialer) ListenPacket(ctx context.Context, destination M.Socksaddr)
 		return nil, err
 	}
 	if h.packetAddr {
-		return packetaddr.NewConn(h.client.DialEarlyPacketConn(conn, M.Socksaddr{Fqdn: packetaddr.SeqPacketMagicAddress}), destination), nil
+		return dialer.NewResolvePacketConn(ctx, h.router, dns.DomainStrategyAsIS, packetaddr.NewConn(h.client.DialEarlyPacketConn(conn, M.Socksaddr{Fqdn: packetaddr.SeqPacketMagicAddress}), destination)), nil
+	} else if h.xudp {
+		return h.client.DialEarlyXUDPPacketConn(conn, destination), nil
 	} else {
 		return h.client.DialEarlyPacketConn(conn, destination), nil
 	}

outbound/wireguard.go

@@ -162,9 +162,8 @@ func (w *WireGuard) Start() error {
 }
 
 func (w *WireGuard) Close() error {
-	return common.Close(
+	if w.device != nil {
-		w.tunDevice,
+		w.device.Close()
-		common.PtrOrNil(w.device),
+	}
-		common.PtrOrNil(w.bind),
+	return common.Close(w.tunDevice)
-	)
 }