Update dependencies

Signed-off-by: Larvan2 <78135608+Larvan2@users.noreply.github.com>

.github/workflows/debug.yml

@@ -31,12 +31,6 @@ jobs:
         uses: actions/setup-go@v4
         with:
           go-version: ${{ steps.version.outputs.go_version }}
-      - name: Cache go module
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: go-${{ hashFiles('**/go.sum') }}
       - name: Add cache to Go proxy
         run: |
           version=`git rev-parse HEAD`
@@ -196,12 +190,6 @@ jobs:
         uses: actions/setup-go@v4
         with:
           go-version: ${{ steps.version.outputs.go_version }}
-      - name: Cache go module
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: go-${{ hashFiles('**/go.sum') }}
       - name: Build
         id: build
         run: make

.github/workflows/lint.yml

@@ -31,12 +31,6 @@ jobs:
         uses: actions/setup-go@v4
         with:
           go-version: ${{ steps.version.outputs.go_version }}
-      - name: Cache go module
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: go-${{ hashFiles('**/go.sum') }}
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:

Makefile

@@ -22,7 +22,7 @@ install:
 fmt:
 	@gofumpt -l -w .
 	@gofmt -s -w .
-	@gci write --custom-order -s "standard,prefix(github.com/sagernet/),default" .
+	@gci write --custom-order -s standard -s "prefix(github.com/sagernet/)" -s "default" .
 
 fmt_install:
 	go install -v mvdan.cc/gofumpt@latest
@@ -77,13 +77,20 @@ test_stdio:
 	go mod tidy && \
 	go test -v -tags "$(TAGS_TEST),force_stdio" .
 
+android:
+	go run ./cmd/internal/build_libbox -target android
+
+ios:
+	go run ./cmd/internal/build_libbox -target ios
+
 lib:
-	go run ./cmd/internal/build_libbox
+	go run ./cmd/internal/build_libbox -target android
+	go run ./cmd/internal/build_libbox -target ios
 
 lib_install:
 	go get -v -d
-	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.0.0-20221130124640-349ebaa752ca
-	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.0.0-20221130124640-349ebaa752ca
+	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.0.0-20230413023804-244d7ff07035
+	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.0.0-20230413023804-244d7ff07035
 
 clean:
 	rm -rf bin dist sing-box

README.md

@@ -8,6 +8,10 @@ The universal proxy platform.
 
 https://sing-box.sagernet.org
 
+## Support
+
+https://community.sagernet.org/c/sing-box/
+
 ## License
 
 ```

adapter/experimental.go

@@ -13,6 +13,7 @@ type ClashServer interface {
 	PreStarter
 	Mode() string
 	StoreSelected() bool
+	StoreFakeIP() bool
 	CacheFile() ClashCacheFile
 	HistoryStorage() *urltest.HistoryStorage
 	RoutedConnection(ctx context.Context, conn net.Conn, metadata InboundContext, matchedRule Rule) (net.Conn, Tracker)
@@ -22,6 +23,7 @@ type ClashServer interface {
 type ClashCacheFile interface {
 	LoadSelected(group string) string
 	StoreSelected(group string, selected string) error
+	FakeIPStorage
 }
 
 type Tracker interface {
@@ -33,6 +35,11 @@ type OutboundGroup interface {
 	All() []string
 }
 
+type URLTestGroup interface {
+	OutboundGroup
+	URLTest(ctx context.Context, url string) (map[string]uint16, error)
+}
+
 func OutboundTag(detour Outbound) string {
 	if group, isGroup := detour.(OutboundGroup); isGroup {
 		return group.Now()

adapter/fakeip.go

@@ -0,0 +1,23 @@
+package adapter
+
+import (
+	"net/netip"
+
+	"github.com/sagernet/sing-dns"
+)
+
+type FakeIPStore interface {
+	Service
+	Contains(address netip.Addr) bool
+	Create(domain string, strategy dns.DomainStrategy) (netip.Addr, error)
+	Lookup(address netip.Addr) (string, bool)
+	Reset() error
+}
+
+type FakeIPStorage interface {
+	FakeIPMetadata() *FakeIPMetadata
+	FakeIPSaveMetadata(metadata *FakeIPMetadata) error
+	FakeIPStore(address netip.Addr, domain string) error
+	FakeIPLoad(address netip.Addr) (string, bool)
+	FakeIPReset() error
+}

adapter/fakeip_metadata.go

@@ -0,0 +1,50 @@
+package adapter
+
+import (
+	"bytes"
+	"encoding"
+	"encoding/binary"
+	"io"
+	"net/netip"
+
+	"github.com/sagernet/sing/common"
+)
+
+type FakeIPMetadata struct {
+	Inet4Range   netip.Prefix
+	Inet6Range   netip.Prefix
+	Inet4Current netip.Addr
+	Inet6Current netip.Addr
+}
+
+func (m *FakeIPMetadata) MarshalBinary() (data []byte, err error) {
+	var buffer bytes.Buffer
+	for _, marshaler := range []encoding.BinaryMarshaler{m.Inet4Range, m.Inet6Range, m.Inet4Current, m.Inet6Current} {
+		data, err = marshaler.MarshalBinary()
+		if err != nil {
+			return
+		}
+		common.Must(binary.Write(&buffer, binary.BigEndian, uint16(len(data))))
+		buffer.Write(data)
+	}
+	data = buffer.Bytes()
+	return
+}
+
+func (m *FakeIPMetadata) UnmarshalBinary(data []byte) error {
+	reader := bytes.NewReader(data)
+	for _, unmarshaler := range []encoding.BinaryUnmarshaler{&m.Inet4Range, &m.Inet6Range, &m.Inet4Current, &m.Inet6Current} {
+		var length uint16
+		common.Must(binary.Read(reader, binary.BigEndian, &length))
+		element := make([]byte, length)
+		_, err := io.ReadFull(reader, element)
+		if err != nil {
+			return err
+		}
+		err = unmarshaler.UnmarshalBinary(element)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

adapter/inbound.go

@@ -27,7 +27,7 @@ type InjectableInbound interface {
 type InboundContext struct {
 	Inbound     string
 	InboundType string
-	IPVersion   int
+	IPVersion   uint8
 	Network     string
 	Source      M.Socksaddr
 	Destination M.Socksaddr

adapter/outbound.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"net"
 
+	"github.com/sagernet/sing-tun"
 	N "github.com/sagernet/sing/common/network"
 )
 
@@ -17,3 +18,8 @@ type Outbound interface {
 	NewConnection(ctx context.Context, conn net.Conn, metadata InboundContext) error
 	NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata InboundContext) error
 }
+
+type IPOutbound interface {
+	Outbound
+	NewIPConnection(ctx context.Context, conn tun.RouteContext, metadata InboundContext) (tun.DirectDestination, error)
+}

adapter/router.go

@@ -21,8 +21,13 @@ type Router interface {
 	Outbound(tag string) (Outbound, bool)
 	DefaultOutbound(network string) Outbound
 
+	FakeIPStore() FakeIPStore
+
 	RouteConnection(ctx context.Context, conn net.Conn, metadata InboundContext) error
 	RoutePacketConnection(ctx context.Context, conn N.PacketConn, metadata InboundContext) error
+	RouteIPConnection(ctx context.Context, conn tun.RouteContext, metadata InboundContext) tun.RouteAction
+
+	NatRequired(outbound string) bool
 
 	GeoIPReader() *geoip.Reader
 	LoadGeosite(code string) (Rule, error)
@@ -32,6 +37,7 @@ type Router interface {
 	LookupDefault(ctx context.Context, domain string) ([]netip.Addr, error)
 
 	InterfaceFinder() control.InterfaceFinder
+	UpdateInterfaces() error
 	DefaultInterface() string
 	AutoDetectInterface() bool
 	AutoDetectInterfaceFunc() control.Func
@@ -39,7 +45,9 @@ type Router interface {
 	NetworkMonitor() tun.NetworkUpdateMonitor
 	InterfaceMonitor() tun.DefaultInterfaceMonitor
 	PackageManager() tun.PackageManager
+
 	Rules() []Rule
+	IPRules() []IPRule
 
 	TimeService
 
@@ -48,6 +56,8 @@ type Router interface {
 
 	V2RayServer() V2RayServer
 	SetV2RayServer(server V2RayServer)
+
+	ResetNetwork() error
 }
 
 type routerContextKey struct{}
@@ -76,6 +86,12 @@ type Rule interface {
 type DNSRule interface {
 	Rule
 	DisableCache() bool
+	RewriteTTL() *uint32
+}
+
+type IPRule interface {
+	Rule
+	Action() tun.ActionType
 }
 
 type InterfaceUpdateListener interface {

box.go

@@ -62,6 +62,7 @@ func New(options Options) (*Box, error) {
 		defaultLogWriter = io.Discard
 	}
 	logFactory, err := log.New(log.Options{
+		Context:        ctx,
 		Options:        common.PtrValueOrDefault(options.Log),
 		Observable:     needClashAPI,
 		DefaultWriter:  defaultLogWriter,
@@ -133,10 +134,16 @@ func New(options Options) (*Box, error) {
 	if err != nil {
 		return nil, err
 	}
+	if options.PlatformInterface != nil {
+		err = options.PlatformInterface.Initialize(ctx, router)
+		if err != nil {
+			return nil, E.Cause(err, "initialize platform interface")
+		}
+	}
 	preServices := make(map[string]adapter.Service)
 	postServices := make(map[string]adapter.Service)
 	if needClashAPI {
-		clashServer, err := experimental.NewClashServer(router, logFactory.(log.ObservableFactory), common.PtrValueOrDefault(options.Experimental.ClashAPI))
+		clashServer, err := experimental.NewClashServer(ctx, router, logFactory.(log.ObservableFactory), common.PtrValueOrDefault(options.Experimental.ClashAPI))
 		if err != nil {
 			return nil, E.Cause(err, "create clash api server")
 		}

cmd/internal/build_libbox/main.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strings"
 
 	_ "github.com/sagernet/gomobile/event/key"
 	"github.com/sagernet/sing-box/cmd/internal/build_shared"
@@ -38,18 +39,23 @@ func main() {
 var (
 	sharedFlags []string
 	debugFlags  []string
+	sharedTags  []string
+	debugTags   []string
 )
 
 func init() {
 	sharedFlags = append(sharedFlags, "-trimpath")
 	sharedFlags = append(sharedFlags, "-ldflags")
-
 	currentTag, err := build_shared.ReadTag()
 	if err != nil {
 		currentTag = "unknown"
 	}
 	sharedFlags = append(sharedFlags, "-X github.com/sagernet/sing-box/constant.Version="+currentTag+" -s -w -buildid=")
 	debugFlags = append(debugFlags, "-X github.com/sagernet/sing-box/constant.Version="+currentTag)
+
+	sharedTags = append(sharedTags, "with_gvisor", "with_quic", "with_wireguard", "with_utls", "with_clash_api")
+	sharedTags = append(sharedTags, "test_sing_shadowsocks2")
+	debugTags = append(debugTags, "debug")
 }
 
 func buildAndroid() {
@@ -70,9 +76,9 @@ func buildAndroid() {
 
 	args = append(args, "-tags")
 	if !debugEnabled {
-		args = append(args, "with_gvisor,with_quic,with_wireguard,with_utls,with_clash_api")
+		args = append(args, strings.Join(sharedTags, ","))
 	} else {
-		args = append(args, "with_gvisor,with_quic,with_wireguard,with_utls,with_clash_api,debug")
+		args = append(args, strings.Join(append(sharedTags, debugTags...), ","))
 	}
 	args = append(args, "./experimental/libbox")
 
@@ -109,11 +115,12 @@ func buildiOS() {
 		args = append(args, debugFlags...)
 	}
 
+	tags := append(sharedTags, "with_low_memory", "with_conntrack")
 	args = append(args, "-tags")
 	if !debugEnabled {
-		args = append(args, "with_gvisor,with_quic,with_utls,with_clash_api,with_low_memory,with_conntrack")
+		args = append(args, strings.Join(tags, ","))
 	} else {
-		args = append(args, "with_gvisor,with_quic,with_utls,with_clash_api,with_low_memory,with_conntrack,debug")
+		args = append(args, strings.Join(append(tags, debugTags...), ","))
 	}
 	args = append(args, "./experimental/libbox")
 

cmd/sing-box/cmd_generate.go

@@ -9,7 +9,7 @@ import (
 
 	"github.com/sagernet/sing-box/log"
 
-	"github.com/gofrs/uuid"
+	"github.com/gofrs/uuid/v5"
 	"github.com/spf13/cobra"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )

cmd/sing-box/debug.go

@@ -1,44 +0,0 @@
-//go:build debug
-
-package main
-
-import (
-	"encoding/json"
-	"net/http"
-	_ "net/http/pprof"
-	"runtime"
-	"runtime/debug"
-
-	"github.com/sagernet/sing-box/common/badjson"
-	"github.com/sagernet/sing-box/log"
-
-	"github.com/dustin/go-humanize"
-)
-
-func init() {
-	http.HandleFunc("/debug/gc", func(writer http.ResponseWriter, request *http.Request) {
-		writer.WriteHeader(http.StatusNoContent)
-		go debug.FreeOSMemory()
-	})
-	http.HandleFunc("/debug/memory", func(writer http.ResponseWriter, request *http.Request) {
-		var memStats runtime.MemStats
-		runtime.ReadMemStats(&memStats)
-
-		var memObject badjson.JSONObject
-		memObject.Put("heap", humanize.IBytes(memStats.HeapInuse))
-		memObject.Put("stack", humanize.IBytes(memStats.StackInuse))
-		memObject.Put("idle", humanize.IBytes(memStats.HeapIdle-memStats.HeapReleased))
-		memObject.Put("goroutines", runtime.NumGoroutine())
-		memObject.Put("rss", rusageMaxRSS())
-
-		encoder := json.NewEncoder(writer)
-		encoder.SetIndent("", "  ")
-		encoder.Encode(memObject)
-	})
-	go func() {
-		err := http.ListenAndServe("0.0.0.0:8964", nil)
-		if err != nil {
-			log.Debug(err)
-		}
-	}()
-}

common/badjsonmerge/merge_test.go

@@ -21,7 +21,7 @@ func TestMergeJSON(t *testing.T) {
 				{
 					Type: C.RuleTypeDefault,
 					DefaultOptions: option.DefaultRule{
-						Network:  N.NetworkTCP,
+						Network:  []string{N.NetworkTCP},
 						Outbound: "direct",
 					},
 				},
@@ -42,7 +42,7 @@ func TestMergeJSON(t *testing.T) {
 				{
 					Type: C.RuleTypeDefault,
 					DefaultOptions: option.DefaultRule{
-						Network:  N.NetworkUDP,
+						Network:  []string{N.NetworkUDP},
 						Outbound: "direct",
 					},
 				},

common/badtls/badtls.go

@@ -1,4 +1,4 @@
-//go:build go1.19 && !go1.20
+//go:build go1.20 && !go1.21
 
 package badtls
 
@@ -14,39 +14,60 @@ import (
 	"sync/atomic"
 	"unsafe"
 
+	"github.com/sagernet/sing-box/log"
 	"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"
+	aTLS "github.com/sagernet/sing/common/tls"
 )
 
 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
+	writer              N.ExtendedWriter
+	isHandshakeComplete *atomic.Bool
+	activeCall          *atomic.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) {
+func TryCreate(conn aTLS.Conn) aTLS.Conn {
+	tlsConn, ok := conn.(*tls.Conn)
+	if !ok {
+		return conn
+	}
+	badConn, err := Create(tlsConn)
+	if err != nil {
+		log.Warn("initialize badtls: ", err)
+		return conn
+	}
+	return badConn
+}
+
+func Create(conn *tls.Conn) (aTLS.Conn, error) {
+	rawConn := reflect.Indirect(reflect.ValueOf(conn))
+	rawIsHandshakeComplete := rawConn.FieldByName("isHandshakeComplete")
+	if !rawIsHandshakeComplete.IsValid() || rawIsHandshakeComplete.Kind() != reflect.Struct {
+		return nil, E.New("badtls: invalid isHandshakeComplete")
+	}
+	isHandshakeComplete := (*atomic.Bool)(unsafe.Pointer(rawIsHandshakeComplete.UnsafeAddr()))
+	if !isHandshakeComplete.Load() {
 		return nil, E.New("handshake not finished")
 	}
-	rawConn := reflect.Indirect(reflect.ValueOf(conn))
 	rawActiveCall := rawConn.FieldByName("activeCall")
-	if !rawActiveCall.IsValid() || rawActiveCall.Kind() != reflect.Int32 {
+	if !rawActiveCall.IsValid() || rawActiveCall.Kind() != reflect.Struct {
 		return nil, E.New("badtls: invalid active call")
 	}
-	activeCall := (*int32)(unsafe.Pointer(rawActiveCall.UnsafeAddr()))
+	activeCall := (*atomic.Int32)(unsafe.Pointer(rawActiveCall.UnsafeAddr()))
 	rawHalfConn := rawConn.FieldByName("out")
 	if !rawHalfConn.IsValid() || rawHalfConn.Kind() != reflect.Struct {
 		return nil, E.New("badtls: invalid half conn")
@@ -108,19 +129,20 @@ func Create(conn *tls.Conn) (TLSConn, error) {
 	}
 	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,
+		Conn:                conn,
+		writer:              bufio.NewExtendedWriter(conn.NetConn()),
+		isHandshakeComplete: isHandshakeComplete,
+		activeCall:          activeCall,
+		closeNotifySent:     closeNotifySent,
+		version:             version,
+		halfAccess:          halfAccess,
+		halfError:           halfError,
+		cipher:              aeadCipher,
+		explicitNonceLen:    explicitNonceLen,
+		rand:                randReader,
+		halfPtr:             rawHalfConn.UnsafeAddr(),
+		halfSeq:             halfSeq,
+		halfScratchBuf:      halfScratchBuf,
 	}, nil
 }
 
@@ -130,15 +152,15 @@ func (c *Conn) WriteBuffer(buffer *buf.Buffer) error {
 		return common.Error(c.Write(buffer.Bytes()))
 	}
 	for {
-		x := atomic.LoadInt32(c.activeCall)
+		x := c.activeCall.Load()
 		if x&1 != 0 {
 			return net.ErrClosed
 		}
-		if atomic.CompareAndSwapInt32(c.activeCall, x, x+2) {
+		if c.activeCall.CompareAndSwap(x, x+2) {
 			break
 		}
 	}
-	defer atomic.AddInt32(c.activeCall, -2)
+	defer c.activeCall.Add(-2)
 	c.halfAccess.Lock()
 	defer c.halfAccess.Unlock()
 	if err := *c.halfError; err != nil {
@@ -186,6 +208,7 @@ func (c *Conn) WriteBuffer(buffer *buf.Buffer) error {
 		binary.BigEndian.PutUint16(outBuf[3:], uint16(dataLen+c.explicitNonceLen+c.cipher.Overhead()))
 	}
 	incSeq(c.halfPtr)
+	log.Trace("badtls write ", buffer.Len())
 	return c.writer.WriteBuffer(buffer)
 }
 

common/badtls/badtls_stub.go

@@ -1,4 +1,4 @@
-//go:build !go1.19 || go1.20
+//go:build !go1.19 || go1.21
 
 package badtls
 

common/badtls/conn.go

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

common/badtls/link.go

@@ -1,9 +1,8 @@
-//go:build go1.19 && !go.1.20
+//go:build go1.20 && !go.1.21
 
 package badtls
 
 import (
-	"crypto/tls"
 	"reflect"
 	_ "unsafe"
 )
@@ -16,9 +15,6 @@ const (
 //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)
 

common/badversion/version.go

@@ -0,0 +1,114 @@
+package badversion
+
+import (
+	"strconv"
+	"strings"
+
+	F "github.com/sagernet/sing/common/format"
+)
+
+type Version struct {
+	Major                int
+	Minor                int
+	Patch                int
+	PreReleaseIdentifier string
+	PreReleaseVersion    int
+}
+
+func (v Version) After(anotherVersion Version) bool {
+	if v.Major > anotherVersion.Major {
+		return true
+	} else if v.Major < anotherVersion.Major {
+		return false
+	}
+	if v.Minor > anotherVersion.Minor {
+		return true
+	} else if v.Minor < anotherVersion.Minor {
+		return false
+	}
+	if v.Patch > anotherVersion.Patch {
+		return true
+	} else if v.Patch < anotherVersion.Patch {
+		return false
+	}
+	if v.PreReleaseIdentifier == "" && anotherVersion.PreReleaseIdentifier != "" {
+		return true
+	} else if v.PreReleaseIdentifier != "" && anotherVersion.PreReleaseIdentifier == "" {
+		return false
+	}
+	if v.PreReleaseIdentifier != "" && anotherVersion.PreReleaseIdentifier != "" {
+		if v.PreReleaseIdentifier == "beta" && anotherVersion.PreReleaseIdentifier == "alpha" {
+			return true
+		} else if v.PreReleaseIdentifier == "alpha" && anotherVersion.PreReleaseIdentifier == "beta" {
+			return false
+		}
+		if v.PreReleaseVersion > anotherVersion.PreReleaseVersion {
+			return true
+		} else if v.PreReleaseVersion < anotherVersion.PreReleaseVersion {
+			return false
+		}
+	}
+	return false
+}
+
+func (v Version) String() string {
+	version := F.ToString(v.Major, ".", v.Minor, ".", v.Patch)
+	if v.PreReleaseIdentifier != "" {
+		version = F.ToString(version, "-", v.PreReleaseIdentifier, ".", v.PreReleaseVersion)
+	}
+	return version
+}
+
+func (v Version) BadString() string {
+	version := F.ToString(v.Major, ".", v.Minor)
+	if v.Patch > 0 {
+		version = F.ToString(version, ".", v.Patch)
+	}
+	if v.PreReleaseIdentifier != "" {
+		version = F.ToString(version, "-", v.PreReleaseIdentifier)
+		if v.PreReleaseVersion > 0 {
+			version = F.ToString(version, v.PreReleaseVersion)
+		}
+	}
+	return version
+}
+
+func Parse(versionName string) (version Version) {
+	if strings.HasPrefix(versionName, "v") {
+		versionName = versionName[1:]
+	}
+	if strings.Contains(versionName, "-") {
+		parts := strings.Split(versionName, "-")
+		versionName = parts[0]
+		identifier := parts[1]
+		if strings.Contains(identifier, ".") {
+			identifierParts := strings.Split(identifier, ".")
+			version.PreReleaseIdentifier = identifierParts[0]
+			if len(identifierParts) >= 2 {
+				version.PreReleaseVersion, _ = strconv.Atoi(identifierParts[1])
+			}
+		} else {
+			if strings.HasPrefix(identifier, "alpha") {
+				version.PreReleaseIdentifier = "alpha"
+				version.PreReleaseVersion, _ = strconv.Atoi(identifier[5:])
+			} else if strings.HasPrefix(identifier, "beta") {
+				version.PreReleaseIdentifier = "beta"
+				version.PreReleaseVersion, _ = strconv.Atoi(identifier[4:])
+			} else {
+				version.PreReleaseIdentifier = identifier
+			}
+		}
+	}
+	versionElements := strings.Split(versionName, ".")
+	versionLen := len(versionElements)
+	if versionLen >= 1 {
+		version.Major, _ = strconv.Atoi(versionElements[0])
+	}
+	if versionLen >= 2 {
+		version.Minor, _ = strconv.Atoi(versionElements[1])
+	}
+	if versionLen >= 3 {
+		version.Patch, _ = strconv.Atoi(versionElements[2])
+	}
+	return
+}

common/badversion/version_json.go

@@ -0,0 +1,17 @@
+package badversion
+
+import "github.com/sagernet/sing-box/common/json"
+
+func (v Version) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.String())
+}
+
+func (v *Version) UnmarshalJSON(data []byte) error {
+	var version string
+	err := json.Unmarshal(data, &version)
+	if err != nil {
+		return err
+	}
+	*v = Parse(version)
+	return nil
+}

common/badversion/version_test.go

@@ -0,0 +1,18 @@
+package badversion
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestCompareVersion(t *testing.T) {
+	t.Parallel()
+	require.Equal(t, "1.3.0-beta.1", Parse("v1.3.0-beta1").String())
+	require.Equal(t, "1.3-beta1", Parse("v1.3.0-beta.1").BadString())
+	require.True(t, Parse("1.3.0").After(Parse("1.3-beta1")))
+	require.True(t, Parse("1.3.0").After(Parse("1.3.0-beta1")))
+	require.True(t, Parse("1.3.0-beta1").After(Parse("1.3.0-alpha1")))
+	require.True(t, Parse("1.3.1").After(Parse("1.3.0")))
+	require.True(t, Parse("1.4").After(Parse("1.3")))
+}

common/dialer/conntrack/conn.go

@@ -12,7 +12,7 @@ type Conn struct {
 	element *list.Element[io.Closer]
 }
 
-func NewConn(conn net.Conn) (*Conn, error) {
+func NewConn(conn net.Conn) (net.Conn, error) {
 	connAccess.Lock()
 	element := openConnection.PushBack(conn)
 	connAccess.Unlock()

common/dialer/conntrack/packet_conn.go

@@ -4,6 +4,7 @@ import (
 	"io"
 	"net"
 
+	"github.com/sagernet/sing/common/bufio"
 	"github.com/sagernet/sing/common/x/list"
 )
 
@@ -12,7 +13,7 @@ type PacketConn struct {
 	element *list.Element[io.Closer]
 }
 
-func NewPacketConn(conn net.PacketConn) (*PacketConn, error) {
+func NewPacketConn(conn net.PacketConn) (net.PacketConn, error) {
 	connAccess.Lock()
 	element := openConnection.PushBack(conn)
 	connAccess.Unlock()
@@ -42,7 +43,7 @@ func (c *PacketConn) Close() error {
 }
 
 func (c *PacketConn) Upstream() any {
-	return c.PacketConn
+	return bufio.NewPacketConn(c.PacketConn)
 }
 
 func (c *PacketConn) ReaderReplaceable() bool {

common/dialer/default.go

@@ -7,7 +7,6 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/dialer/conntrack"
-	"github.com/sagernet/sing-box/common/warning"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing/common/control"
@@ -17,41 +16,6 @@ import (
 	"github.com/sagernet/tfo-go"
 )
 
-var warnBindInterfaceOnUnsupportedPlatform = warning.New(
-	func() bool {
-		return !(C.IsLinux || C.IsWindows || C.IsDarwin)
-	},
-	"outbound option `bind_interface` is only supported on Linux and Windows",
-)
-
-var warnRoutingMarkOnUnsupportedPlatform = warning.New(
-	func() bool {
-		return !C.IsLinux
-	},
-	"outbound option `routing_mark` is only supported on Linux",
-)
-
-var warnReuseAdderOnUnsupportedPlatform = warning.New(
-	func() bool {
-		return !(C.IsDarwin || C.IsDragonfly || C.IsFreebsd || C.IsLinux || C.IsNetbsd || C.IsOpenbsd || C.IsSolaris || C.IsWindows)
-	},
-	"outbound option `reuse_addr` is unsupported on current platform",
-)
-
-var warnProtectPathOnNonAndroid = warning.New(
-	func() bool {
-		return !C.IsAndroid
-	},
-	"outbound option `protect_path` is only supported on Android",
-)
-
-var warnTFOOnUnsupportedPlatform = warning.New(
-	func() bool {
-		return !(C.IsDarwin || C.IsFreebsd || C.IsLinux || C.IsWindows)
-	},
-	"outbound option `tcp_fast_open` is unsupported on current platform",
-)
-
 type DefaultDialer struct {
 	dialer4     tfo.Dialer
 	dialer6     tfo.Dialer
@@ -66,7 +30,6 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 	var dialer net.Dialer
 	var listener net.ListenConfig
 	if options.BindInterface != "" {
-		warnBindInterfaceOnUnsupportedPlatform.Check()
 		bindFunc := control.BindToInterface(router.InterfaceFinder(), options.BindInterface, -1)
 		dialer.Control = control.Append(dialer.Control, bindFunc)
 		listener.Control = control.Append(listener.Control, bindFunc)
@@ -80,7 +43,6 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 		listener.Control = control.Append(listener.Control, bindFunc)
 	}
 	if options.RoutingMark != 0 {
-		warnRoutingMarkOnUnsupportedPlatform.Check()
 		dialer.Control = control.Append(dialer.Control, control.RoutingMark(options.RoutingMark))
 		listener.Control = control.Append(listener.Control, control.RoutingMark(options.RoutingMark))
 	} else if router.DefaultMark() != 0 {
@@ -88,11 +50,9 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 		listener.Control = control.Append(listener.Control, control.RoutingMark(router.DefaultMark()))
 	}
 	if options.ReuseAddr {
-		warnReuseAdderOnUnsupportedPlatform.Check()
 		listener.Control = control.Append(listener.Control, control.ReuseAddr())
 	}
 	if options.ProtectPath != "" {
-		warnProtectPathOnNonAndroid.Check()
 		dialer.Control = control.Append(dialer.Control, control.ProtectPath(options.ProtectPath))
 		listener.Control = control.Append(listener.Control, control.ProtectPath(options.ProtectPath))
 	}
@@ -101,9 +61,6 @@ func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDia
 	} else {
 		dialer.Timeout = C.TCPTimeout
 	}
-	if options.TCPFastOpen {
-		warnTFOOnUnsupportedPlatform.Check()
-	}
 	var udpFragment bool
 	if options.UDPFragment != nil {
 		udpFragment = *options.UDPFragment

common/dialer/resolve.go

@@ -73,7 +73,7 @@ func (d *ResolveDialer) ListenPacket(ctx context.Context, destination M.Socksadd
 	if err != nil {
 		return nil, err
 	}
-	return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), destination, M.SocksaddrFrom(destinationAddress, destination.Port)), nil
+	return bufio.NewNATPacketConn(bufio.NewPacketConn(conn), M.SocksaddrFrom(destinationAddress, destination.Port), destination), nil
 }
 
 func (d *ResolveDialer) Upstream() any {

common/dialer/tfo.go

@@ -27,7 +27,12 @@ type slowOpenConn struct {
 
 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)
+		switch N.NetworkName(network) {
+		case N.NetworkTCP, N.NetworkUDP:
+			return dialer.Dialer.DialContext(ctx, network, destination.String())
+		default:
+			return dialer.Dialer.DialContext(ctx, network, destination.AddrString())
+		}
 	}
 	return &slowOpenConn{
 		dialer:      dialer,

common/mux/client.go

@@ -1,519 +1,21 @@
 package mux
 
 import (
-	"context"
-	"encoding/binary"
-	"io"
-	"net"
-	"sync"
-
 	"github.com/sagernet/sing-box/option"
-	"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"
+	"github.com/sagernet/sing-mux"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/common/x/list"
 )
 
-var _ N.Dialer = (*Client)(nil)
-
-type Client struct {
-	access         sync.Mutex
-	connections    list.List[abstractSession]
-	ctx            context.Context
-	dialer         N.Dialer
-	protocol       Protocol
-	maxConnections int
-	minStreams     int
-	maxStreams     int
-}
-
-func NewClient(ctx context.Context, dialer N.Dialer, protocol Protocol, maxConnections int, minStreams int, maxStreams int) *Client {
-	return &Client{
-		ctx:            ctx,
-		dialer:         dialer,
-		protocol:       protocol,
-		maxConnections: maxConnections,
-		minStreams:     minStreams,
-		maxStreams:     maxStreams,
-	}
-}
-
-func NewClientWithOptions(ctx context.Context, dialer N.Dialer, options option.MultiplexOptions) (N.Dialer, error) {
+func NewClientWithOptions(dialer N.Dialer, options option.MultiplexOptions) (*Client, error) {
 	if !options.Enabled {
 		return nil, nil
 	}
-	if options.MaxConnections == 0 && options.MaxStreams == 0 {
-		options.MinStreams = 8
-	}
-	protocol, err := ParseProtocol(options.Protocol)
-	if err != nil {
-		return nil, err
-	}
-	return NewClient(ctx, dialer, protocol, options.MaxConnections, options.MinStreams, options.MaxStreams), nil
-}
-
-func (c *Client) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
-	switch N.NetworkName(network) {
-	case N.NetworkTCP:
-		stream, err := c.openStream()
-		if err != nil {
-			return nil, err
-		}
-		return &ClientConn{Conn: stream, destination: destination}, nil
-	case N.NetworkUDP:
-		stream, err := c.openStream()
-		if err != nil {
-			return nil, err
-		}
-		return bufio.NewUnbindPacketConn(&ClientPacketConn{ExtendedConn: bufio.NewExtendedConn(stream), destination: destination}), nil
-	default:
-		return nil, E.Extend(N.ErrUnknownNetwork, network)
-	}
-}
-
-func (c *Client) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
-	stream, err := c.openStream()
-	if err != nil {
-		return nil, err
-	}
-	return &ClientPacketAddrConn{ExtendedConn: bufio.NewExtendedConn(stream), destination: destination}, nil
-}
-
-func (c *Client) openStream() (net.Conn, error) {
-	var (
-		session abstractSession
-		stream  net.Conn
-		err     error
-	)
-	for attempts := 0; attempts < 2; attempts++ {
-		session, err = c.offer()
-		if err != nil {
-			continue
-		}
-		stream, err = session.Open()
-		if err != nil {
-			continue
-		}
-		break
-	}
-	if err != nil {
-		return nil, err
-	}
-	return &wrapStream{stream}, nil
-}
-
-func (c *Client) offer() (abstractSession, error) {
-	c.access.Lock()
-	defer c.access.Unlock()
-
-	sessions := make([]abstractSession, 0, c.maxConnections)
-	for element := c.connections.Front(); element != nil; {
-		if element.Value.IsClosed() {
-			nextElement := element.Next()
-			c.connections.Remove(element)
-			element = nextElement
-			continue
-		}
-		sessions = append(sessions, element.Value)
-		element = element.Next()
-	}
-	sLen := len(sessions)
-	if sLen == 0 {
-		return c.offerNew()
-	}
-	session := common.MinBy(sessions, abstractSession.NumStreams)
-	numStreams := session.NumStreams()
-	if numStreams == 0 {
-		return session, nil
-	}
-	if c.maxConnections > 0 {
-		if sLen >= c.maxConnections || numStreams < c.minStreams {
-			return session, nil
-		}
-	} else {
-		if c.maxStreams > 0 && numStreams < c.maxStreams {
-			return session, nil
-		}
-	}
-	return c.offerNew()
-}
-
-func (c *Client) offerNew() (abstractSession, error) {
-	conn, err := c.dialer.DialContext(c.ctx, N.NetworkTCP, Destination)
-	if err != nil {
-		return nil, err
-	}
-	if vectorisedWriter, isVectorised := bufio.CreateVectorisedWriter(conn); isVectorised {
-		conn = &vectorisedProtocolConn{protocolConn{Conn: conn, protocol: c.protocol}, vectorisedWriter}
-	} else {
-		conn = &protocolConn{Conn: conn, protocol: c.protocol}
-	}
-	session, err := c.protocol.newClient(conn)
-	if err != nil {
-		return nil, err
-	}
-	c.connections.PushBack(session)
-	return session, nil
-}
-
-func (c *Client) Close() error {
-	c.access.Lock()
-	defer c.access.Unlock()
-	for _, session := range c.connections.Array() {
-		session.Close()
-	}
-	return nil
-}
-
-type ClientConn struct {
-	net.Conn
-	destination  M.Socksaddr
-	requestWrite bool
-	responseRead bool
-}
-
-func (c *ClientConn) readResponse() error {
-	response, err := ReadStreamResponse(c.Conn)
-	if err != nil {
-		return err
-	}
-	if response.Status == statusError {
-		return E.New("remote error: ", response.Message)
-	}
-	return nil
-}
-
-func (c *ClientConn) Read(b []byte) (n int, err error) {
-	if !c.responseRead {
-		err = c.readResponse()
-		if err != nil {
-			return
-		}
-		c.responseRead = true
-	}
-	return c.Conn.Read(b)
-}
-
-func (c *ClientConn) Write(b []byte) (n int, err error) {
-	if c.requestWrite {
-		return c.Conn.Write(b)
-	}
-	request := StreamRequest{
-		Network:     N.NetworkTCP,
-		Destination: c.destination,
-	}
-	_buffer := buf.StackNewSize(requestLen(request) + len(b))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	EncodeStreamRequest(request, buffer)
-	buffer.Write(b)
-	_, err = c.Conn.Write(buffer.Bytes())
-	if err != nil {
-		return
-	}
-	c.requestWrite = true
-	return len(b), nil
-}
-
-func (c *ClientConn) ReadFrom(r io.Reader) (n int64, err error) {
-	if !c.requestWrite {
-		return bufio.ReadFrom0(c, r)
-	}
-	return bufio.Copy(c.Conn, r)
-}
-
-func (c *ClientConn) WriteTo(w io.Writer) (n int64, err error) {
-	if !c.responseRead {
-		return bufio.WriteTo0(c, w)
-	}
-	return bufio.Copy(w, c.Conn)
-}
-
-func (c *ClientConn) LocalAddr() net.Addr {
-	return c.Conn.LocalAddr()
-}
-
-func (c *ClientConn) RemoteAddr() net.Addr {
-	return c.destination.TCPAddr()
-}
-
-func (c *ClientConn) ReaderReplaceable() bool {
-	return c.responseRead
-}
-
-func (c *ClientConn) WriterReplaceable() bool {
-	return c.requestWrite
-}
-
-func (c *ClientConn) Upstream() any {
-	return c.Conn
-}
-
-type ClientPacketConn struct {
-	N.ExtendedConn
-	destination  M.Socksaddr
-	requestWrite bool
-	responseRead bool
-}
-
-func (c *ClientPacketConn) readResponse() error {
-	response, err := ReadStreamResponse(c.ExtendedConn)
-	if err != nil {
-		return err
-	}
-	if response.Status == statusError {
-		return E.New("remote error: ", response.Message)
-	}
-	return nil
-}
-
-func (c *ClientPacketConn) Read(b []byte) (n int, err error) {
-	if !c.responseRead {
-		err = c.readResponse()
-		if err != nil {
-			return
-		}
-		c.responseRead = true
-	}
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	if cap(b) < int(length) {
-		return 0, io.ErrShortBuffer
-	}
-	return io.ReadFull(c.ExtendedConn, b[:length])
-}
-
-func (c *ClientPacketConn) writeRequest(payload []byte) (n int, err error) {
-	request := StreamRequest{
-		Network:     N.NetworkUDP,
-		Destination: c.destination,
-	}
-	rLen := requestLen(request)
-	if len(payload) > 0 {
-		rLen += 2 + len(payload)
-	}
-	_buffer := buf.StackNewSize(rLen)
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	EncodeStreamRequest(request, buffer)
-	if len(payload) > 0 {
-		common.Must(
-			binary.Write(buffer, binary.BigEndian, uint16(len(payload))),
-			common.Error(buffer.Write(payload)),
-		)
-	}
-	_, err = c.ExtendedConn.Write(buffer.Bytes())
-	if err != nil {
-		return
-	}
-	c.requestWrite = true
-	return len(payload), nil
-}
-
-func (c *ClientPacketConn) Write(b []byte) (n int, err error) {
-	if !c.requestWrite {
-		return c.writeRequest(b)
-	}
-	err = binary.Write(c.ExtendedConn, binary.BigEndian, uint16(len(b)))
-	if err != nil {
-		return
-	}
-	return c.ExtendedConn.Write(b)
-}
-
-func (c *ClientPacketConn) ReadBuffer(buffer *buf.Buffer) (err error) {
-	if !c.responseRead {
-		err = c.readResponse()
-		if err != nil {
-			return
-		}
-		c.responseRead = true
-	}
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
-	return
-}
-
-func (c *ClientPacketConn) WriteBuffer(buffer *buf.Buffer) error {
-	if !c.requestWrite {
-		defer buffer.Release()
-		return common.Error(c.writeRequest(buffer.Bytes()))
-	}
-	bLen := buffer.Len()
-	binary.BigEndian.PutUint16(buffer.ExtendHeader(2), uint16(bLen))
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ClientPacketConn) FrontHeadroom() int {
-	return 2
-}
-
-func (c *ClientPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	err = c.ReadBuffer(buffer)
-	return
-}
-
-func (c *ClientPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	return c.WriteBuffer(buffer)
-}
-
-func (c *ClientPacketConn) LocalAddr() net.Addr {
-	return c.ExtendedConn.LocalAddr()
-}
-
-func (c *ClientPacketConn) RemoteAddr() net.Addr {
-	return c.destination.UDPAddr()
-}
-
-func (c *ClientPacketConn) Upstream() any {
-	return c.ExtendedConn
-}
-
-var _ N.NetPacketConn = (*ClientPacketAddrConn)(nil)
-
-type ClientPacketAddrConn struct {
-	N.ExtendedConn
-	destination  M.Socksaddr
-	requestWrite bool
-	responseRead bool
-}
-
-func (c *ClientPacketAddrConn) readResponse() error {
-	response, err := ReadStreamResponse(c.ExtendedConn)
-	if err != nil {
-		return err
-	}
-	if response.Status == statusError {
-		return E.New("remote error: ", response.Message)
-	}
-	return nil
-}
-
-func (c *ClientPacketAddrConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
-	if !c.responseRead {
-		err = c.readResponse()
-		if err != nil {
-			return
-		}
-		c.responseRead = true
-	}
-	destination, err := M.SocksaddrSerializer.ReadAddrPort(c.ExtendedConn)
-	if err != nil {
-		return
-	}
-	addr = destination.UDPAddr()
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	if cap(p) < int(length) {
-		return 0, nil, io.ErrShortBuffer
-	}
-	n, err = io.ReadFull(c.ExtendedConn, p[:length])
-	return
-}
-
-func (c *ClientPacketAddrConn) writeRequest(payload []byte, destination M.Socksaddr) (n int, err error) {
-	request := StreamRequest{
-		Network:     N.NetworkUDP,
-		Destination: c.destination,
-		PacketAddr:  true,
-	}
-	rLen := requestLen(request)
-	if len(payload) > 0 {
-		rLen += M.SocksaddrSerializer.AddrPortLen(destination) + 2 + len(payload)
-	}
-	_buffer := buf.StackNewSize(rLen)
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	EncodeStreamRequest(request, buffer)
-	if len(payload) > 0 {
-		common.Must(
-			M.SocksaddrSerializer.WriteAddrPort(buffer, destination),
-			binary.Write(buffer, binary.BigEndian, uint16(len(payload))),
-			common.Error(buffer.Write(payload)),
-		)
-	}
-	_, err = c.ExtendedConn.Write(buffer.Bytes())
-	if err != nil {
-		return
-	}
-	c.requestWrite = true
-	return len(payload), nil
-}
-
-func (c *ClientPacketAddrConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
-	if !c.requestWrite {
-		return c.writeRequest(p, M.SocksaddrFromNet(addr))
-	}
-	err = M.SocksaddrSerializer.WriteAddrPort(c.ExtendedConn, M.SocksaddrFromNet(addr))
-	if err != nil {
-		return
-	}
-	err = binary.Write(c.ExtendedConn, binary.BigEndian, uint16(len(p)))
-	if err != nil {
-		return
-	}
-	return c.ExtendedConn.Write(p)
-}
-
-func (c *ClientPacketAddrConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	if !c.responseRead {
-		err = c.readResponse()
-		if err != nil {
-			return
-		}
-		c.responseRead = true
-	}
-	destination, err = M.SocksaddrSerializer.ReadAddrPort(c.ExtendedConn)
-	if err != nil {
-		return
-	}
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
-	return
-}
-
-func (c *ClientPacketAddrConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	if !c.requestWrite {
-		defer buffer.Release()
-		return common.Error(c.writeRequest(buffer.Bytes(), destination))
-	}
-	bLen := buffer.Len()
-	header := buf.With(buffer.ExtendHeader(M.SocksaddrSerializer.AddrPortLen(destination) + 2))
-	common.Must(
-		M.SocksaddrSerializer.WriteAddrPort(header, destination),
-		binary.Write(header, binary.BigEndian, uint16(bLen)),
-	)
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ClientPacketAddrConn) LocalAddr() net.Addr {
-	return c.ExtendedConn.LocalAddr()
-}
-
-func (c *ClientPacketAddrConn) FrontHeadroom() int {
-	return 2 + M.MaxSocksaddrLength
-}
-
-func (c *ClientPacketAddrConn) Upstream() any {
-	return c.ExtendedConn
+	return mux.NewClient(mux.Options{
+		Dialer:         dialer,
+		Protocol:       options.Protocol,
+		MaxConnections: options.MaxConnections,
+		MinStreams:     options.MinStreams,
+		MaxStreams:     options.MaxStreams,
+		Padding:        options.Padding,
+	})
 }

common/mux/protocol.go

@@ -1,240 +1,14 @@
 package mux
 
 import (
-	"encoding/binary"
-	"io"
-	"net"
-
-	C "github.com/sagernet/sing-box/constant"
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/sing/common/rw"
-	"github.com/sagernet/smux"
-
-	"github.com/hashicorp/yamux"
+	"github.com/sagernet/sing-mux"
 )
 
-var Destination = M.Socksaddr{
-	Fqdn: "sp.mux.sing-box.arpa",
-	Port: 444,
-}
-
-const (
-	ProtocolSMux Protocol = iota
-	ProtocolYAMux
+type (
+	Client = mux.Client
 )
 
-type Protocol byte
-
-func ParseProtocol(name string) (Protocol, error) {
-	switch name {
-	case "", "smux":
-		return ProtocolSMux, nil
-	case "yamux":
-		return ProtocolYAMux, nil
-	default:
-		return ProtocolYAMux, E.New("unknown multiplex protocol: ", name)
-	}
-}
-
-func (p Protocol) newServer(conn net.Conn) (abstractSession, error) {
-	switch p {
-	case ProtocolSMux:
-		session, err := smux.Server(conn, smuxConfig())
-		if err != nil {
-			return nil, err
-		}
-		return &smuxSession{session}, nil
-	case ProtocolYAMux:
-		return yamux.Server(conn, yaMuxConfig())
-	default:
-		panic("unknown protocol")
-	}
-}
-
-func (p Protocol) newClient(conn net.Conn) (abstractSession, error) {
-	switch p {
-	case ProtocolSMux:
-		session, err := smux.Client(conn, smuxConfig())
-		if err != nil {
-			return nil, err
-		}
-		return &smuxSession{session}, nil
-	case ProtocolYAMux:
-		return yamux.Client(conn, yaMuxConfig())
-	default:
-		panic("unknown protocol")
-	}
-}
-
-func smuxConfig() *smux.Config {
-	config := smux.DefaultConfig()
-	config.KeepAliveDisabled = true
-	return config
-}
-
-func yaMuxConfig() *yamux.Config {
-	config := yamux.DefaultConfig()
-	config.LogOutput = io.Discard
-	config.StreamCloseTimeout = C.TCPTimeout
-	config.StreamOpenTimeout = C.TCPTimeout
-	return config
-}
-
-func (p Protocol) String() string {
-	switch p {
-	case ProtocolSMux:
-		return "smux"
-	case ProtocolYAMux:
-		return "yamux"
-	default:
-		return "unknown"
-	}
-}
-
-const (
-	version0 = 0
+var (
+	Destination      = mux.Destination
+	HandleConnection = mux.HandleConnection
 )
-
-type Request struct {
-	Protocol Protocol
-}
-
-func ReadRequest(reader io.Reader) (*Request, error) {
-	version, err := rw.ReadByte(reader)
-	if err != nil {
-		return nil, err
-	}
-	if version != version0 {
-		return nil, E.New("unsupported version: ", version)
-	}
-	protocol, err := rw.ReadByte(reader)
-	if err != nil {
-		return nil, err
-	}
-	if protocol > byte(ProtocolYAMux) {
-		return nil, E.New("unsupported protocol: ", protocol)
-	}
-	return &Request{Protocol: Protocol(protocol)}, nil
-}
-
-func EncodeRequest(buffer *buf.Buffer, request Request) {
-	buffer.WriteByte(version0)
-	buffer.WriteByte(byte(request.Protocol))
-}
-
-const (
-	flagUDP       = 1
-	flagAddr      = 2
-	statusSuccess = 0
-	statusError   = 1
-)
-
-type StreamRequest struct {
-	Network     string
-	Destination M.Socksaddr
-	PacketAddr  bool
-}
-
-func ReadStreamRequest(reader io.Reader) (*StreamRequest, error) {
-	var flags uint16
-	err := binary.Read(reader, binary.BigEndian, &flags)
-	if err != nil {
-		return nil, err
-	}
-	destination, err := M.SocksaddrSerializer.ReadAddrPort(reader)
-	if err != nil {
-		return nil, err
-	}
-	var network string
-	var udpAddr bool
-	if flags&flagUDP == 0 {
-		network = N.NetworkTCP
-	} else {
-		network = N.NetworkUDP
-		udpAddr = flags&flagAddr != 0
-	}
-	return &StreamRequest{network, destination, udpAddr}, nil
-}
-
-func requestLen(request StreamRequest) int {
-	var rLen int
-	rLen += 1 // version
-	rLen += 2 // flags
-	rLen += M.SocksaddrSerializer.AddrPortLen(request.Destination)
-	return rLen
-}
-
-func EncodeStreamRequest(request StreamRequest, buffer *buf.Buffer) {
-	destination := request.Destination
-	var flags uint16
-	if request.Network == N.NetworkUDP {
-		flags |= flagUDP
-	}
-	if request.PacketAddr {
-		flags |= flagAddr
-		if !destination.IsValid() {
-			destination = Destination
-		}
-	}
-	common.Must(
-		binary.Write(buffer, binary.BigEndian, flags),
-		M.SocksaddrSerializer.WriteAddrPort(buffer, destination),
-	)
-}
-
-type StreamResponse struct {
-	Status  uint8
-	Message string
-}
-
-func ReadStreamResponse(reader io.Reader) (*StreamResponse, error) {
-	var response StreamResponse
-	status, err := rw.ReadByte(reader)
-	if err != nil {
-		return nil, err
-	}
-	response.Status = status
-	if status == statusError {
-		response.Message, err = rw.ReadVString(reader)
-		if err != nil {
-			return nil, err
-		}
-	}
-	return &response, nil
-}
-
-type wrapStream struct {
-	net.Conn
-}
-
-func (w *wrapStream) Read(p []byte) (n int, err error) {
-	n, err = w.Conn.Read(p)
-	err = wrapError(err)
-	return
-}
-
-func (w *wrapStream) Write(p []byte) (n int, err error) {
-	n, err = w.Conn.Write(p)
-	err = wrapError(err)
-	return
-}
-
-func (w *wrapStream) WriteIsThreadUnsafe() {
-}
-
-func (w *wrapStream) Upstream() any {
-	return w.Conn
-}
-
-func wrapError(err error) error {
-	switch err {
-	case yamux.ErrStreamClosed:
-		return io.EOF
-	default:
-		return err
-	}
-}

common/mux/service.go

@@ -1,257 +0,0 @@
-package mux
-
-import (
-	"context"
-	"encoding/binary"
-	"net"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/log"
-	"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"
-	"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 {
-	request, err := ReadRequest(conn)
-	if err != nil {
-		return err
-	}
-	session, err := request.Protocol.newServer(conn)
-	if err != nil {
-		return err
-	}
-	var group task.Group
-	group.Append0(func(ctx context.Context) error {
-		var stream net.Conn
-		for {
-			stream, err = session.Accept()
-			if err != nil {
-				return err
-			}
-			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) {
-	stream = &wrapStream{stream}
-	request, err := ReadStreamRequest(stream)
-	if err != nil {
-		logger.ErrorContext(ctx, err)
-		return
-	}
-	metadata.Destination = request.Destination
-	if request.Network == N.NetworkTCP {
-		logger.InfoContext(ctx, "inbound multiplex connection to ", metadata.Destination)
-		hErr := router.RouteConnection(ctx, &ServerConn{ExtendedConn: bufio.NewExtendedConn(stream)}, metadata)
-		stream.Close()
-		if hErr != nil {
-			errorHandler.NewError(ctx, hErr)
-		}
-	} else {
-		var packetConn N.PacketConn
-		if !request.PacketAddr {
-			logger.InfoContext(ctx, "inbound multiplex packet connection to ", metadata.Destination)
-			packetConn = &ServerPacketConn{ExtendedConn: bufio.NewExtendedConn(stream), destination: request.Destination}
-		} else {
-			logger.InfoContext(ctx, "inbound multiplex packet connection")
-			packetConn = &ServerPacketAddrConn{ExtendedConn: bufio.NewExtendedConn(stream)}
-		}
-		hErr := router.RoutePacketConnection(ctx, packetConn, metadata)
-		stream.Close()
-		if hErr != nil {
-			errorHandler.NewError(ctx, hErr)
-		}
-	}
-}
-
-var _ N.HandshakeConn = (*ServerConn)(nil)
-
-type ServerConn struct {
-	N.ExtendedConn
-	responseWrite bool
-}
-
-func (c *ServerConn) HandshakeFailure(err error) error {
-	errMessage := err.Error()
-	_buffer := buf.StackNewSize(1 + rw.UVariantLen(uint64(len(errMessage))) + len(errMessage))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(statusError),
-		rw.WriteVString(_buffer, errMessage),
-	)
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerConn) Write(b []byte) (n int, err error) {
-	if c.responseWrite {
-		return c.ExtendedConn.Write(b)
-	}
-	_buffer := buf.StackNewSize(1 + len(b))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(statusSuccess),
-		common.Error(buffer.Write(b)),
-	)
-	_, err = c.ExtendedConn.Write(buffer.Bytes())
-	if err != nil {
-		return
-	}
-	c.responseWrite = true
-	return len(b), nil
-}
-
-func (c *ServerConn) WriteBuffer(buffer *buf.Buffer) error {
-	if c.responseWrite {
-		return c.ExtendedConn.WriteBuffer(buffer)
-	}
-	buffer.ExtendHeader(1)[0] = statusSuccess
-	c.responseWrite = true
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerConn) FrontHeadroom() int {
-	if !c.responseWrite {
-		return 1
-	}
-	return 0
-}
-
-func (c *ServerConn) Upstream() any {
-	return c.ExtendedConn
-}
-
-var (
-	_ N.HandshakeConn = (*ServerPacketConn)(nil)
-	_ N.PacketConn    = (*ServerPacketConn)(nil)
-)
-
-type ServerPacketConn struct {
-	N.ExtendedConn
-	destination   M.Socksaddr
-	responseWrite bool
-}
-
-func (c *ServerPacketConn) HandshakeFailure(err error) error {
-	errMessage := err.Error()
-	_buffer := buf.StackNewSize(1 + rw.UVariantLen(uint64(len(errMessage))) + len(errMessage))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(statusError),
-		rw.WriteVString(_buffer, errMessage),
-	)
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
-	if err != nil {
-		return
-	}
-	destination = c.destination
-	return
-}
-
-func (c *ServerPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	pLen := buffer.Len()
-	common.Must(binary.Write(buf.With(buffer.ExtendHeader(2)), binary.BigEndian, uint16(pLen)))
-	if !c.responseWrite {
-		buffer.ExtendHeader(1)[0] = statusSuccess
-		c.responseWrite = true
-	}
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerPacketConn) Upstream() any {
-	return c.ExtendedConn
-}
-
-func (c *ServerPacketConn) FrontHeadroom() int {
-	if !c.responseWrite {
-		return 3
-	}
-	return 2
-}
-
-var (
-	_ N.HandshakeConn = (*ServerPacketAddrConn)(nil)
-	_ N.PacketConn    = (*ServerPacketAddrConn)(nil)
-)
-
-type ServerPacketAddrConn struct {
-	N.ExtendedConn
-	responseWrite bool
-}
-
-func (c *ServerPacketAddrConn) HandshakeFailure(err error) error {
-	errMessage := err.Error()
-	_buffer := buf.StackNewSize(1 + rw.UVariantLen(uint64(len(errMessage))) + len(errMessage))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	common.Must(
-		buffer.WriteByte(statusError),
-		rw.WriteVString(_buffer, errMessage),
-	)
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerPacketAddrConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	destination, err = M.SocksaddrSerializer.ReadAddrPort(c.ExtendedConn)
-	if err != nil {
-		return
-	}
-	var length uint16
-	err = binary.Read(c.ExtendedConn, binary.BigEndian, &length)
-	if err != nil {
-		return
-	}
-	_, err = buffer.ReadFullFrom(c.ExtendedConn, int(length))
-	if err != nil {
-		return
-	}
-	return
-}
-
-func (c *ServerPacketAddrConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	pLen := buffer.Len()
-	common.Must(binary.Write(buf.With(buffer.ExtendHeader(2)), binary.BigEndian, uint16(pLen)))
-	common.Must(M.SocksaddrSerializer.WriteAddrPort(buf.With(buffer.ExtendHeader(M.SocksaddrSerializer.AddrPortLen(destination))), destination))
-	if !c.responseWrite {
-		buffer.ExtendHeader(1)[0] = statusSuccess
-		c.responseWrite = true
-	}
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *ServerPacketAddrConn) Upstream() any {
-	return c.ExtendedConn
-}
-
-func (c *ServerPacketAddrConn) FrontHeadroom() int {
-	if !c.responseWrite {
-		return 3 + M.MaxSocksaddrLength
-	}
-	return 2 + M.MaxSocksaddrLength
-}

common/mux/session.go

@@ -1,91 +0,0 @@
-package mux
-
-import (
-	"io"
-	"net"
-
-	"github.com/sagernet/sing/common"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/smux"
-)
-
-type abstractSession interface {
-	Open() (net.Conn, error)
-	Accept() (net.Conn, error)
-	NumStreams() int
-	Close() error
-	IsClosed() bool
-}
-
-var _ abstractSession = (*smuxSession)(nil)
-
-type smuxSession struct {
-	*smux.Session
-}
-
-func (s *smuxSession) Open() (net.Conn, error) {
-	return s.OpenStream()
-}
-
-func (s *smuxSession) Accept() (net.Conn, error) {
-	return s.AcceptStream()
-}
-
-type protocolConn struct {
-	net.Conn
-	protocol        Protocol
-	protocolWritten bool
-}
-
-func (c *protocolConn) Write(p []byte) (n int, err error) {
-	if c.protocolWritten {
-		return c.Conn.Write(p)
-	}
-	_buffer := buf.StackNewSize(2 + len(p))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	EncodeRequest(buffer, Request{
-		Protocol: c.protocol,
-	})
-	common.Must(common.Error(buffer.Write(p)))
-	n, err = c.Conn.Write(buffer.Bytes())
-	if err == nil {
-		n--
-	}
-	c.protocolWritten = true
-	return n, err
-}
-
-func (c *protocolConn) ReadFrom(r io.Reader) (n int64, err error) {
-	if !c.protocolWritten {
-		return bufio.ReadFrom0(c, r)
-	}
-	return bufio.Copy(c.Conn, r)
-}
-
-func (c *protocolConn) Upstream() any {
-	return c.Conn
-}
-
-type vectorisedProtocolConn struct {
-	protocolConn
-	N.VectorisedWriter
-}
-
-func (c *vectorisedProtocolConn) WriteVectorised(buffers []*buf.Buffer) error {
-	if c.protocolWritten {
-		return c.VectorisedWriter.WriteVectorised(buffers)
-	}
-	c.protocolWritten = true
-	_buffer := buf.StackNewSize(2)
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
-	defer buffer.Release()
-	EncodeRequest(buffer, Request{
-		Protocol: c.protocol,
-	})
-	return c.VectorisedWriter.WriteVectorised(append([]*buf.Buffer{buffer}, buffers...))
-}

common/process/searcher.go

@@ -3,10 +3,12 @@ package process
 import (
 	"context"
 	"net/netip"
+	"os/user"
 
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-tun"
 	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
 )
 
 type Searcher interface {
@@ -28,5 +30,15 @@ type Info struct {
 }
 
 func FindProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
-	return findProcessInfo(searcher, ctx, network, source, destination)
+	info, err := searcher.FindProcessInfo(ctx, network, source, destination)
+	if err != nil {
+		return nil, err
+	}
+	if info.UserId != -1 {
+		osUser, _ := user.LookupId(F.ToString(info.UserId))
+		if osUser != nil {
+			info.User = osUser.Username
+		}
+	}
+	return info, nil
 }

common/process/searcher_with_name.go

@@ -1,25 +0,0 @@
-//go:build linux && !android
-
-package process
-
-import (
-	"context"
-	"net/netip"
-	"os/user"
-
-	F "github.com/sagernet/sing/common/format"
-)
-
-func findProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
-	info, err := searcher.FindProcessInfo(ctx, network, source, destination)
-	if err != nil {
-		return nil, err
-	}
-	if info.UserId != -1 {
-		osUser, _ := user.LookupId(F.ToString(info.UserId))
-		if osUser != nil {
-			info.User = osUser.Username
-		}
-	}
-	return info, nil
-}

common/process/searcher_without_name.go

@@ -1,12 +0,0 @@
-//go:build !linux || android
-
-package process
-
-import (
-	"context"
-	"net/netip"
-)
-
-func findProcessInfo(searcher Searcher, ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*Info, error) {
-	return searcher.FindProcessInfo(ctx, network, source, destination)
-}

common/sniff/http.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/sagernet/sing-box/adapter"
 	C "github.com/sagernet/sing-box/constant"
+	M "github.com/sagernet/sing/common/metadata"
 	"github.com/sagernet/sing/protocol/http"
 )
 
@@ -15,5 +16,5 @@ func HTTPHost(ctx context.Context, reader io.Reader) (*adapter.InboundContext, e
 	if err != nil {
 		return nil, err
 	}
-	return &adapter.InboundContext{Protocol: C.ProtocolHTTP, Domain: request.Host}, nil
+	return &adapter.InboundContext{Protocol: C.ProtocolHTTP, Domain: M.ParseSocksaddr(request.Host).AddrString()}, nil
 }

common/sniff/http_test.go

@@ -0,0 +1,27 @@
+package sniff_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/sagernet/sing-box/common/sniff"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSniffHTTP1(t *testing.T) {
+	t.Parallel()
+	pkt := "GET / HTTP/1.1\r\nHost: www.google.com\r\nAccept: */*\r\n\r\n"
+	metadata, err := sniff.HTTPHost(context.Background(), strings.NewReader(pkt))
+	require.NoError(t, err)
+	require.Equal(t, metadata.Domain, "www.google.com")
+}
+
+func TestSniffHTTP1WithPort(t *testing.T) {
+	t.Parallel()
+	pkt := "GET / HTTP/1.1\r\nHost: www.gov.cn:8080\r\nAccept: */*\r\n\r\n"
+	metadata, err := sniff.HTTPHost(context.Background(), strings.NewReader(pkt))
+	require.NoError(t, err)
+	require.Equal(t, metadata.Domain, "www.gov.cn")
+}

common/sniff/sniff.go

@@ -24,12 +24,12 @@ func PeekStream(ctx context.Context, conn net.Conn, buffer *buf.Buffer, timeout
 	}
 	err := conn.SetReadDeadline(time.Now().Add(timeout))
 	if err != nil {
-		return nil, err
+		return nil, E.Cause(err, "set read deadline")
 	}
 	_, err = buffer.ReadOnceFrom(conn)
 	err = E.Errors(err, conn.SetReadDeadline(time.Time{}))
 	if err != nil {
-		return nil, err
+		return nil, E.Cause(err, "read payload")
 	}
 	var metadata *adapter.InboundContext
 	var errors []error

common/tls/reality_client.go

@@ -125,7 +125,7 @@ func (e *RealityClientConfig) ClientHandshake(ctx context.Context, conn net.Conn
 
 	hello.SessionId[0] = 1
 	hello.SessionId[1] = 8
-	hello.SessionId[2] = 0
+	hello.SessionId[2] = 1
 	binary.BigEndian.PutUint32(hello.SessionId[4:], uint32(time.Now().Unix()))
 	copy(hello.SessionId[8:], e.shortID[:])
 

common/tls/std_server.go

@@ -180,7 +180,7 @@ func NewSTDServer(ctx context.Context, router adapter.Router, logger log.Logger,
 		tlsConfig.ServerName = options.ServerName
 	}
 	if len(options.ALPN) > 0 {
-		tlsConfig.NextProtos = append(tlsConfig.NextProtos, options.ALPN...)
+		tlsConfig.NextProtos = append(options.ALPN, tlsConfig.NextProtos...)
 	}
 	if options.MinVersion != "" {
 		minVersion, err := ParseTLSVersion(options.MinVersion)

common/urltest/urltest.go

@@ -50,6 +50,9 @@ func (s *HistoryStorage) StoreURLTestHistory(tag string, history *History) {
 }
 
 func URLTest(ctx context.Context, link string, detour N.Dialer) (t uint16, err error) {
+	if link == "" {
+		link = "https://www.gstatic.com/generate_204"
+	}
 	linkURL, err := url.Parse(link)
 	if err != nil {
 		return

common/warning/warning.go

@@ -1,31 +0,0 @@
-package warning
-
-import (
-	"sync"
-
-	"github.com/sagernet/sing-box/log"
-)
-
-type Warning struct {
-	logger    log.Logger
-	check     CheckFunc
-	message   string
-	checkOnce sync.Once
-}
-
-type CheckFunc = func() bool
-
-func New(checkFunc CheckFunc, message string) Warning {
-	return Warning{
-		check:   checkFunc,
-		message: message,
-	}
-}
-
-func (w *Warning) Check() {
-	w.checkOnce.Do(func() {
-		if w.check() {
-			log.Warn(w.message)
-		}
-	})
-}

constant/path.go

@@ -3,28 +3,13 @@ package constant
 import (
 	"os"
 	"path/filepath"
-	"strings"
 
 	"github.com/sagernet/sing/common/rw"
 )
 
 const dirName = "sing-box"
 
-var (
-	basePath      string
-	resourcePaths []string
-)
-
-func BasePath(name string) string {
-	if basePath == "" || strings.HasPrefix(name, "/") {
-		return name
-	}
-	return filepath.Join(basePath, name)
-}
-
-func SetBasePath(path string) {
-	basePath = path
-}
+var resourcePaths []string
 
 func FindPath(name string) (string, bool) {
 	name = os.ExpandEnv(name)

debug_go118.go

@@ -10,6 +10,7 @@ import (
 )
 
 func applyDebugOptions(options option.DebugOptions) {
+	applyDebugListenOption(options)
 	if options.GCPercent != nil {
 		debug.SetGCPercent(*options.GCPercent)
 	}

debug_go119.go

@@ -10,6 +10,7 @@ import (
 )
 
 func applyDebugOptions(options option.DebugOptions) {
+	applyDebugListenOption(options)
 	if options.GCPercent != nil {
 		debug.SetGCPercent(*options.GCPercent)
 	}

debug_http.go

@@ -0,0 +1,67 @@
+package box
+
+import (
+	"net/http"
+	"net/http/pprof"
+	"runtime"
+	"runtime/debug"
+
+	"github.com/sagernet/sing-box/common/badjson"
+	"github.com/sagernet/sing-box/common/json"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+
+	"github.com/dustin/go-humanize"
+	"github.com/go-chi/chi/v5"
+)
+
+var debugHTTPServer *http.Server
+
+func applyDebugListenOption(options option.DebugOptions) {
+	if debugHTTPServer != nil {
+		debugHTTPServer.Close()
+		debugHTTPServer = nil
+	}
+	if options.Listen == "" {
+		return
+	}
+	r := chi.NewMux()
+	r.Route("/debug", func(r chi.Router) {
+		r.Get("/gc", func(writer http.ResponseWriter, request *http.Request) {
+			writer.WriteHeader(http.StatusNoContent)
+			go debug.FreeOSMemory()
+		})
+		r.Get("/memory", func(writer http.ResponseWriter, request *http.Request) {
+			var memStats runtime.MemStats
+			runtime.ReadMemStats(&memStats)
+
+			var memObject badjson.JSONObject
+			memObject.Put("heap", humanize.IBytes(memStats.HeapInuse))
+			memObject.Put("stack", humanize.IBytes(memStats.StackInuse))
+			memObject.Put("idle", humanize.IBytes(memStats.HeapIdle-memStats.HeapReleased))
+			memObject.Put("goroutines", runtime.NumGoroutine())
+			memObject.Put("rss", rusageMaxRSS())
+
+			encoder := json.NewEncoder(writer)
+			encoder.SetIndent("", "  ")
+			encoder.Encode(memObject)
+		})
+		r.HandleFunc("/pprof", pprof.Index)
+		r.HandleFunc("/pprof/*", pprof.Index)
+		r.HandleFunc("/pprof/cmdline", pprof.Cmdline)
+		r.HandleFunc("/pprof/profile", pprof.Profile)
+		r.HandleFunc("/pprof/symbol", pprof.Symbol)
+		r.HandleFunc("/pprof/trace", pprof.Trace)
+	})
+	debugHTTPServer = &http.Server{
+		Addr:    options.Listen,
+		Handler: r,
+	}
+	go func() {
+		err := debugHTTPServer.ListenAndServe()
+		if err != nil && !E.IsClosed(err) {
+			log.Error(E.Cause(err, "serve debug HTTP server"))
+		}
+	}()
+}

debug_linux.go

@@ -1,6 +1,4 @@
-//go:build debug
-
-package main
+package box
 
 import (
 	"runtime"

debug_stub.go

@@ -1,6 +1,6 @@
-//go:build debug && !linux
+//go:build !linux
 
-package main
+package box
 
 func rusageMaxRSS() float64 {
 	return -1

docs/changelog.md

@@ -1,3 +1,97 @@
+#### 1.3-beta10
+
+* Improve direct copy **1**
+* Improve DNS caching
+* Add `independent_cache` [option](/configuration/dns#independent_cache) for DNS
+* Reimplemented shadowsocks client **2**
+* Add multiplex support for VLESS outbound
+* Set TCP keepalive for WireGuard gVisor TCP connections
+* Fixes and improvements
+
+**1**:
+
+* Make splice work with traffic statistics systems like Clash API
+* Significantly reduces memory usage of idle connections
+
+**2**:
+
+Improved performance and reduced memory usage.
+
+#### 1.3-beta9
+
+* Improve multiplex **1**
+* Fixes and improvements
+
+*1*:
+
+Added new `h2mux` multiplex protocol and `padding` multiplex option, see [Multiplex](/configuration/shared/multiplex).
+
+#### 1.2.6
+
+* Fix bugs and update dependencies
+
+#### 1.3-beta8
+
+* Fix `system` tun stack for ios
+* Fix network monitor for android/ios
+* Update VLESS and XUDP protocol **1**
+* Fixes and improvements
+
+*1:
+
+This is an incompatible update for XUDP in VLESS if vision flow is enabled.
+
+#### 1.3-beta7
+
+* Add `path` and `headers` options for HTTP outbound
+* Add multi-user support for Shadowsocks legacy AEAD inbound
+* Fixes and improvements
+
+#### 1.2.4
+
+* Fixes and improvements
+
+#### 1.3-beta6
+
+* Fix WireGuard reconnect
+* Perform URLTest recheck after network changes
+* Fix bugs and update dependencies
+
+#### 1.3-beta5
+
+* Add Clash.Meta API compatibility for Clash API
+* Download Yacd-meta by default if the specified Clash `external_ui` directory is empty
+* Add path and headers option for HTTP outbound
+* Fixes and improvements
+
+#### 1.3-beta4
+
+* Fix bugs
+
+#### 1.3-beta2
+
+* Download clash-dashboard if the specified Clash `external_ui` directory is empty
+* Fix bugs and update dependencies
+
+#### 1.3-beta1
+
+* Add [DNS reverse mapping](/configuration/dns#reverse_mapping) support
+* Add [L3 routing](/configuration/route/ip-rule) support **1**
+* Add `rewrite_ttl` DNS rule action
+* Add [FakeIP](/configuration/dns/fakeip) support **2**
+* Add `store_fakeip` Clash API option
+* Add multi-peer support for [WireGuard](/configuration/outbound/wireguard#peers) outbound
+* Add loopback detect
+
+*1*:
+
+It can currently be used to [route connections directly to WireGuard](/examples/wireguard-direct) or block connections
+at the IP layer.
+
+*2*:
+
+See [FAQ](/faq/fakeip) for more information.
+
 #### 1.2.3
 
 * Introducing our [new Android client application](/installation/clients/sfa)

docs/configuration/dns/fakeip.md

@@ -0,0 +1,25 @@
+# FakeIP
+
+### Structure
+
+```json
+{
+  "enabled": true,
+  "inet4_range": "198.18.0.0/15",
+  "inet6_range": "fc00::/18"
+}
+```
+
+### Fields
+
+#### enabled
+
+Enable FakeIP service.
+
+#### inet4_range
+
+IPv4 address range for FakeIP.
+
+#### inet6_address
+
+IPv6 address range for FakeIP.

docs/configuration/dns/fakeip.zh.md

@@ -0,0 +1,25 @@
+# FakeIP
+
+### 结构
+
+```json
+{
+  "enabled": true,
+  "inet4_range": "198.18.0.0/15",
+  "inet6_range": "fc00::/18"
+}
+```
+
+### 字段
+
+#### enabled
+
+启用 FakeIP 服务。
+
+#### inet4_range
+
+用于 FakeIP 的 IPv4 地址范围。
+
+#### inet6_range
+
+用于 FakeIP 的 IPv6 地址范围。

docs/configuration/dns/index.md

@@ -10,7 +10,10 @@
     "final": "",
     "strategy": "",
     "disable_cache": false,
-    "disable_expire": false
+    "disable_expire": false,
+    "independent_cache": false,
+    "reverse_mapping": false,
+    "fakeip": {}
   }
 }
 
@@ -22,6 +25,7 @@
 |----------|--------------------------------|
 | `server` | List of [DNS Server](./server) |
 | `rules`  | List of [DNS Rule](./rule)     |
+| `fakeip` | [FakeIP](./fakeip)             |
 
 #### final
 
@@ -43,4 +47,19 @@ Disable dns cache.
 
 #### disable_expire
 
-Disable dns cache expire.
+Disable dns cache expire.
+
+#### independent_cache
+
+Make each DNS server's cache independent for special purposes. If enabled, will slightly degrade performance.
+
+#### reverse_mapping
+
+Stores a reverse mapping of IP addresses after responding to a DNS query in order to provide domain names when routing.
+
+Since this process relies on the act of resolving domain names by an application before making a request, it can be
+problematic in environments such as macOS, where DNS is proxied and cached by the system.
+
+#### fakeip
+
+[FakeIP](./fakeip) settings.

docs/configuration/dns/index.zh.md

@@ -10,7 +10,10 @@
     "final": "",
     "strategy": "",
     "disable_cache": false,
-    "disable_expire": false
+    "disable_expire": false,
+    "independent_cache": false,
+    "reverse_mapping": false,
+    "fakeip": {}
   }
 }
 
@@ -43,4 +46,18 @@
 
 #### disable_expire
 
-禁用 DNS 缓存过期。
+禁用 DNS 缓存过期。
+
+#### independent_cache
+
+使每个 DNS 服务器的缓存独立，以满足特殊目的。如果启用，将轻微降低性能。
+
+#### reverse_mapping
+
+在响应 DNS 查询后存储 IP 地址的反向映射以为路由目的提供域名。
+
+由于此过程依赖于应用程序在发出请求之前解析域名的行为，因此在 macOS 等 DNS 由系统代理和缓存的环境中可能会出现问题。
+
+#### fakeip
+
+[FakeIP](./fakeip) 设置。

docs/configuration/dns/rule.md

@@ -84,14 +84,16 @@
           "direct"
         ],
         "server": "local",
-        "disable_cache": false
+        "disable_cache": false,
+        "rewrite_ttl": 100
       },
       {
         "type": "logical",
         "mode": "and",
         "rules": [],
         "server": "local",
-        "disable_cache": false
+        "disable_cache": false,
+        "rewrite_ttl": 100
       }
     ]
   }
@@ -244,6 +246,10 @@ Tag of the target dns server.
 
 Disable cache and save cache in this query.
 
+#### rewrite_ttl
+
+Rewrite TTL in DNS responses.
+
 ### Logical Fields
 
 #### type

docs/configuration/dns/rule.zh.md

@@ -243,6 +243,10 @@ DNS 查询类型。值可以为整数或者类型名称字符串。
 
 在此查询中禁用缓存。
 
+#### rewrite_ttl
+
+重写 DNS 回应中的 TTL。
+
 ### 逻辑字段
 
 #### type

docs/configuration/dns/server.md

@@ -30,17 +30,18 @@ The tag of the dns server.
 
 The address of the dns server.
 
-| Protocol | Format                        |
-|----------|-------------------------------|
-| `System` | `local`                       |
-| `TCP`    | `tcp://1.0.0.1`               |
-| `UDP`    | `8.8.8.8` `udp://8.8.4.4`     |
-| `TLS`    | `tls://dns.google`            |
-| `HTTPS`  | `https://1.1.1.1/dns-query`   |
-| `QUIC`   | `quic://dns.adguard.com`      |
-| `HTTP3`  | `h3://8.8.8.8/dns-query`      |
-| `RCode`  | `rcode://refused`             |
-| `DHCP`   | `dhcp://auto` or `dhcp://en0` |
+| Protocol                            | Format                        |
+|-------------------------------------|-------------------------------|
+| `System`                            | `local`                       |
+| `TCP`                               | `tcp://1.0.0.1`               |
+| `UDP`                               | `8.8.8.8` `udp://8.8.4.4`     |
+| `TLS`                               | `tls://dns.google`            |
+| `HTTPS`                             | `https://1.1.1.1/dns-query`   |
+| `QUIC`                              | `quic://dns.adguard.com`      |
+| `HTTP3`                             | `h3://8.8.8.8/dns-query`      |
+| `RCode`                             | `rcode://refused`             |
+| `DHCP`                              | `dhcp://auto` or `dhcp://en0` |
+| [FakeIP](/configuration/dns/fakeip) | `fakeip`                      |
 
 !!! warning ""
 
@@ -93,4 +94,4 @@ Take no effect if override by other settings.
 
 Tag of an outbound for connecting to the dns server.
 
-Default outbound will be used if empty.
+Default outbound will be used if empty.

docs/configuration/dns/server.zh.md

@@ -30,17 +30,18 @@ DNS 服务器的标签。
 
 DNS 服务器的地址。
 
-| 协议       | 格式                           |
-|----------|------------------------------|
-| `System` | `local`                      |
-| `TCP`    | `tcp://1.0.0.1`              |
-| `UDP`    | `8.8.8.8` `udp://8.8.4.4`    |
-| `TLS`    | `tls://dns.google`           |
-| `HTTPS`  | `https://1.1.1.1/dns-query`  |
-| `QUIC`   | `quic://dns.adguard.com`     |
-| `HTTP3`  | `h3://8.8.8.8/dns-query`     |
-| `RCode`  | `rcode://refused`            |
-| `DHCP`   | `dhcp://auto` 或 `dhcp://en0` |
+| 协议                                  | 格式                           |
+|-------------------------------------|------------------------------|
+| `System`                            | `local`                      |
+| `TCP`                               | `tcp://1.0.0.1`              |
+| `UDP`                               | `8.8.8.8` `udp://8.8.4.4`    |
+| `TLS`                               | `tls://dns.google`           |
+| `HTTPS`                             | `https://1.1.1.1/dns-query`  |
+| `QUIC`                              | `quic://dns.adguard.com`     |
+| `HTTP3`                             | `h3://8.8.8.8/dns-query`     |
+| `RCode`                             | `rcode://refused`            |
+| `DHCP`                              | `dhcp://auto` 或 `dhcp://en0` |
+| [FakeIP](/configuration/dns/fakeip) | `fakeip`                     |
 
 !!! warning ""
 

docs/configuration/experimental/index.md

@@ -8,6 +8,8 @@
     "clash_api": {
       "external_controller": "127.0.0.1:9090",
       "external_ui": "folder",
+      "external_ui_download_url": "",
+      "external_ui_download_detour": "",
       "secret": "",
       "default_mode": "rule",
       "store_selected": false,
@@ -53,6 +55,18 @@ A relative path to the configuration directory or an absolute path to a
 directory in which you put some static web resource. sing-box will then
 serve it at `http://{{external-controller}}/ui`.
 
+#### external_ui_download_url
+
+ZIP download URL for the external UI, will be used if the specified `external_ui` directory is empty.
+
+`https://github.com/MetaCubeX/Yacd-meta/archive/gh-pages.zip` will be used if empty.
+
+#### external_ui_download_detour
+
+The tag of the outbound to download the external UI.
+
+Default outbound will be used if empty.
+
 #### secret
 
 Secret for the RESTful API (optional)

docs/configuration/experimental/index.zh.md

@@ -8,6 +8,8 @@
     "clash_api": {
       "external_controller": "127.0.0.1:9090",
       "external_ui": "folder",
+      "external_ui_download_url": "",
+      "external_ui_download_detour": "",
       "secret": "",
       "default_mode": "rule",
       "store_selected": false,
@@ -51,6 +53,18 @@ RESTful web API 监听地址。如果为空，则禁用 Clash API。
 
 到静态网页资源目录的相对路径或绝对路径。sing-box 会在 `http://{{external-controller}}/ui` 下提供它。
 
+#### external_ui_download_url
+
+静态网页资源的 ZIP 下载 URL，如果指定的 `external_ui` 目录为空，将使用。
+
+默认使用 `https://github.com/MetaCubeX/Yacd-meta/archive/gh-pages.zip`。
+
+#### external_ui_download_detour
+
+用于下载静态网页资源的出站的标签。
+
+如果为空，将使用默认出站。
+
 #### secret
 
 RESTful API 的密钥（可选）

docs/configuration/outbound/http.md

@@ -11,6 +11,8 @@
   "server_port": 1080,
   "username": "sekai",
   "password": "admin",
+  "path": "",
+  "headers": {},
   "tls": {},
   
   ... // Dial Fields
@@ -39,6 +41,14 @@ Basic authorization username.
 
 Basic authorization password.
 
+#### path
+
+Path of HTTP request.
+
+#### headers
+
+Extra headers of HTTP request.
+
 #### tls
 
 TLS configuration, see [TLS](/configuration/shared/tls/#outbound).

docs/configuration/outbound/http.zh.md

@@ -11,6 +11,8 @@
   "server_port": 1080,
   "username": "sekai",
   "password": "admin",
+  "path": "",
+  "headers": {},
   "tls": {},
 
   ... // 拨号字段
@@ -39,6 +41,14 @@ Basic 认证用户名。
 
 Basic 认证密码。
 
+#### path
+
+HTTP 请求路径。
+
+#### headers
+
+HTTP 请求的额外标头。
+
 #### tls
 
 TLS 配置, 参阅 [TLS](/zh/configuration/shared/tls/#outbound)。

docs/configuration/outbound/index.md

@@ -37,4 +37,10 @@
 
 #### tag
 
-The tag of the outbound.
+The tag of the outbound.
+
+### Features
+
+#### Outbounds that support IP connection
+
+* `WireGuard`

docs/configuration/outbound/index.zh.md

@@ -36,4 +36,10 @@
 
 #### tag
 
-出站的标签。
+出站的标签。
+
+### 特性
+
+#### 支持 IP 连接的出站
+
+* `WireGuard`

docs/configuration/outbound/urltest.md

@@ -10,7 +10,7 @@
     "proxy-b",
     "proxy-c"
   ],
-  "url": "http://www.gstatic.com/generate_204",
+  "url": "https://www.gstatic.com/generate_204",
   "interval": "1m",
   "tolerance": 50
 }
@@ -26,7 +26,7 @@ List of outbound tags to test.
 
 #### url
 
-The URL to test. `http://www.gstatic.com/generate_204` will be used if empty.
+The URL to test. `https://www.gstatic.com/generate_204` will be used if empty.
 
 #### interval
 

docs/configuration/outbound/urltest.zh.md

@@ -10,7 +10,7 @@
     "proxy-b",
     "proxy-c"
   ],
-  "url": "http://www.gstatic.com/generate_204",
+  "url": "https://www.gstatic.com/generate_204",
   "interval": "1m",
   "tolerance": 50
 }
@@ -26,7 +26,7 @@
 
 #### url
 
-用于测试的链接。默认使用 `http://www.gstatic.com/generate_204`。
+用于测试的链接。默认使用 `https://www.gstatic.com/generate_204`。
 
 #### interval
 

docs/configuration/outbound/wireguard.md

@@ -13,6 +13,18 @@
     "10.0.0.2/32"
   ],
   "private_key": "YNXtAzepDqRv9H52osJVDQnznT5AM11eCK3ESpwSt04=",
+  "peers": [
+    {
+      "server": "127.0.0.1",
+      "server_port": 1080,
+      "public_key": "Z1XXLsKYkYxuiYjJIkRvtIKFepCYHTgON+GwPq7SOV4=",
+      "pre_shared_key": "31aIhAPwktDGpH4JDhA8GNvjFXEf/a6+UaQRyOAiyfM=",
+      "allowed_ips": [
+        "0.0.0.0/0"
+      ],
+      "reserved": [0, 0, 0]
+    }
+  ],
   "peer_public_key": "Z1XXLsKYkYxuiYjJIkRvtIKFepCYHTgON+GwPq7SOV4=",
   "pre_shared_key": "31aIhAPwktDGpH4JDhA8GNvjFXEf/a6+UaQRyOAiyfM=",
   "reserved": [0, 0, 0],
@@ -36,13 +48,13 @@
 
 #### server
 
-==Required==
+==Required if multi-peer disabled==
 
 The server address.
 
 #### server_port
 
-==Required==
+==Required if multi-peer disabled==
 
 The server port.
 
@@ -75,9 +87,25 @@ wg genkey
 echo "private key" || wg pubkey
 ```
 
+#### peers
+
+Multi-peer support. 
+
+If enabled, `server, server_port, peer_public_key, pre_shared_key` will be ignored.
+
+#### peers.allowed_ips
+
+WireGuard allowed IPs.
+
+#### peers.reserved
+
+WireGuard reserved field bytes.
+
+`$outbound.reserved` will be used if empty.
+
 #### peer_public_key
 
-==Required==
+==Required if multi-peer disabled==
 
 WireGuard peer public key.
 

docs/configuration/route/index.md

@@ -7,6 +7,7 @@
   "route": {
     "geoip": {},
     "geosite": {},
+    "ip_rules": [],
     "rules": [],
     "final": "",
     "auto_detect_interface": false,
@@ -19,11 +20,12 @@
 
 ### Fields
 
-| Key       | Format                       |
-|-----------|------------------------------|
-| `geoip`   | [GeoIP](./geoip)             |
-| `geosite` | [Geosite](./geosite)         |
-| `rules`   | List of [Route Rule](./rule) |
+| Key        | Format                             |
+|------------|------------------------------------|
+| `geoip`    | [GeoIP](./geoip)                   |
+| `geosite`  | [Geosite](./geosite)               |
+| `ip_rules` | List of [IP Route Rule](./ip-rule) |
+| `rules`    | List of [Route Rule](./rule)       |
 
 #### final
 

docs/configuration/route/index.zh.md

@@ -7,6 +7,7 @@
   "route": {
     "geoip": {},
     "geosite": {},
+    "ip_rules": [],
     "rules": [],
     "final": "",
     "auto_detect_interface": false,
@@ -19,11 +20,12 @@
 
 ### 字段
 
-| 键         | 格式                   |
-|-----------|----------------------|
-| `geoip`   | [GeoIP](./geoip)     |
-| `geosite` | [GeoSite](./geosite) |
-| `rules`   | 一组 [路由规则](./rule)    |
+| 键          | 格式                      |
+|------------|-------------------------|
+| `geoip`    | [GeoIP](./geoip)        |
+| `geosite`  | [GeoSite](./geosite)    |
+| `ip_rules` | 一组 [IP 路由规则](./ip-rule) |
+| `rules`    | 一组 [路由规则](./rule)       |
 
 #### final
 
@@ -65,4 +67,4 @@
 
 默认为出站连接设置路由标记。
 
-如果设置了 `outbound.routing_mark` 设置，则不生效。
+如果设置了 `outbound.routing_mark` 设置，则不生效。

docs/configuration/route/ip-rule.md

@@ -0,0 +1,205 @@
+### Structure
+
+```json
+{
+  "route": {
+    "ip_rules": [
+      {
+        "inbound": [
+          "mixed-in"
+        ],
+        "ip_version": 6,
+        "network": [
+          "tcp"
+        ],
+        "domain": [
+          "test.com"
+        ],
+        "domain_suffix": [
+          ".cn"
+        ],
+        "domain_keyword": [
+          "test"
+        ],
+        "domain_regex": [
+          "^stun\\..+"
+        ],
+        "geosite": [
+          "cn"
+        ],
+        "source_geoip": [
+          "private"
+        ],
+        "geoip": [
+          "cn"
+        ],
+        "source_ip_cidr": [
+          "10.0.0.0/24",
+          "192.168.0.1"
+        ],
+        "ip_cidr": [
+          "10.0.0.0/24",
+          "192.168.0.1"
+        ],
+        "source_port": [
+          12345
+        ],
+        "source_port_range": [
+          "1000:2000",
+          ":3000",
+          "4000:"
+        ],
+        "port": [
+          80,
+          443
+        ],
+        "port_range": [
+          "1000:2000",
+          ":3000",
+          "4000:"
+        ],
+        "invert": false,
+        "action": "direct",
+        "outbound": "wireguard"
+      },
+      {
+        "type": "logical",
+        "mode": "and",
+        "rules": [],
+        "invert": false,
+        "action": "direct",
+        "outbound": "wireguard"
+      }
+    ]
+  }
+}
+
+```
+
+!!! note ""
+
+    You can ignore the JSON Array [] tag when the content is only one item
+
+### Default Fields
+
+!!! note ""
+
+    The default rule uses the following matching logic:  
+    (`domain` || `domain_suffix` || `domain_keyword` || `domain_regex` || `geosite` || `geoip` || `ip_cidr`) &&  
+    (`port` || `port_range`) &&  
+    (`source_geoip` || `source_ip_cidr`) &&  
+    (`source_port` || `source_port_range`) &&  
+    `other fields`
+
+#### inbound
+
+Tags of [Inbound](/configuration/inbound).
+
+#### ip_version
+
+4 or 6.
+
+Not limited if empty.
+
+#### network
+
+Match network protocol.
+
+Available values:
+
+* `tcp`
+* `udp`
+* `icmpv4`
+* `icmpv6`
+
+#### domain
+
+Match full domain.
+
+#### domain_suffix
+
+Match domain suffix.
+
+#### domain_keyword
+
+Match domain using keyword.
+
+#### domain_regex
+
+Match domain using regular expression.
+
+#### geosite
+
+Match geosite.
+
+#### source_geoip
+
+Match source geoip.
+
+#### geoip
+
+Match geoip.
+
+#### source_ip_cidr
+
+Match source ip cidr.
+
+#### ip_cidr
+
+Match ip cidr.
+
+#### source_port
+
+Match source port.
+
+#### source_port_range
+
+Match source port range.
+
+#### port
+
+Match port.
+
+#### port_range
+
+Match port range.
+
+#### invert
+
+Invert match result.
+
+#### action
+
+==Required==
+
+| Action | Description                                                        |
+|--------|--------------------------------------------------------------------|
+| return | Stop IP routing and assemble the connection to the transport layer |
+| block  | Block the connection                                               |
+| direct | Directly forward the connection                                    |
+
+#### outbound
+
+==Required if action is direct==
+
+Tag of the target outbound.
+
+Only outbound which supports IP connection can be used, see [Outbounds that support IP connection](/configuration/outbound/#outbounds-that-support-ip-connection).
+
+### Logical Fields
+
+#### type
+
+`logical`
+
+#### mode
+
+==Required==
+
+`and` or `or`
+
+#### rules
+
+==Required==
+
+Included default rules.

docs/configuration/route/ip-rule.zh.md

@@ -0,0 +1,204 @@
+### 结构
+
+```json
+{
+  "route": {
+    "ip_rules": [
+      {
+        "inbound": [
+          "mixed-in"
+        ],
+        "ip_version": 6,
+        "network": [
+          "tcp"
+        ],
+        "domain": [
+          "test.com"
+        ],
+        "domain_suffix": [
+          ".cn"
+        ],
+        "domain_keyword": [
+          "test"
+        ],
+        "domain_regex": [
+          "^stun\\..+"
+        ],
+        "geosite": [
+          "cn"
+        ],
+        "source_geoip": [
+          "private"
+        ],
+        "geoip": [
+          "cn"
+        ],
+        "source_ip_cidr": [
+          "10.0.0.0/24",
+          "192.168.0.1"
+        ],
+        "ip_cidr": [
+          "10.0.0.0/24",
+          "192.168.0.1"
+        ],
+        "source_port": [
+          12345
+        ],
+        "source_port_range": [
+          "1000:2000",
+          ":3000",
+          "4000:"
+        ],
+        "port": [
+          80,
+          443
+        ],
+        "port_range": [
+          "1000:2000",
+          ":3000",
+          "4000:"
+        ],
+        "invert": false,
+        "action": "direct",
+        "outbound": "wireguard"
+      },
+      {
+        "type": "logical",
+        "mode": "and",
+        "rules": [],
+        "invert": false,
+        "action": "direct",
+        "outbound": "wireguard"
+      }
+    ]
+  }
+}
+
+```
+
+!!! note ""
+
+    当内容只有一项时，可以忽略 JSON 数组 [] 标签。
+
+### Default Fields
+
+!!! note ""
+
+    默认规则使用以下匹配逻辑:  
+    (`domain` || `domain_suffix` || `domain_keyword` || `domain_regex` || `geosite` || `geoip` || `ip_cidr`) &&  
+    (`port` || `port_range`) &&  
+    (`source_geoip` || `source_ip_cidr`) &&  
+    (`source_port` || `source_port_range`) &&  
+    `other fields`
+
+#### inbound
+
+[入站](/zh/configuration/inbound) 标签。
+
+#### ip_version
+
+4 或 6。
+
+默认不限制。
+
+#### network
+
+匹配网络协议。
+
+可用值：
+
+* `tcp`
+* `udp`
+* `icmpv4`
+* `icmpv6`
+
+#### domain
+
+匹配完整域名。
+
+#### domain_suffix
+
+匹配域名后缀。
+
+#### domain_keyword
+
+匹配域名关键字。
+
+#### domain_regex
+
+匹配域名正则表达式。
+
+#### geosite
+
+匹配 GeoSite。
+
+#### source_geoip
+
+匹配源 GeoIP。
+
+#### geoip
+
+匹配 GeoIP。
+
+#### source_ip_cidr
+
+匹配源 IP CIDR。
+
+#### ip_cidr
+
+匹配 IP CIDR。
+
+#### source_port
+
+匹配源端口。
+
+#### source_port_range
+
+匹配源端口范围。
+
+#### port
+
+匹配端口。
+
+#### port_range
+
+匹配端口范围。
+
+#### invert
+
+反选匹配结果。
+
+#### action
+
+==必填==
+
+| Action | 描述                  |
+|--------|---------------------|
+| return | 停止 IP 路由并将该连接组装到传输层 |
+| block  | 屏蔽该连接               |
+| direct | 直接转发该连接             |
+
+
+#### outbound
+
+==action 为 direct 则必填==
+
+目标出站的标签。
+
+### 逻辑字段
+
+#### type
+
+`logical`
+
+#### mode
+
+==必填==
+
+`and` 或 `or`
+
+#### rules
+
+==必填==
+
+包括的默认规则。

docs/configuration/route/rule.md

@@ -9,7 +9,9 @@
           "mixed-in"
         ],
         "ip_version": 6,
-        "network": "tcp",
+        "network": [
+          "tcp"
+        ],
         "auth_user": [
           "usera",
           "userb"
@@ -244,18 +246,12 @@ Tag of the target outbound.
 
 #### mode
 
+==Required==
+
 `and` or `or`
 
 #### rules
 
-Included default rules.
-
-#### invert
-
-Invert match result.
-
-#### outbound
-
 ==Required==
 
-Tag of the target outbound.
+Included default rules.

docs/configuration/route/rule.zh.md

@@ -9,7 +9,9 @@
           "mixed-in"
         ],
         "ip_version": 6,
-        "network": "tcp",
+        "network": [
+          "tcp"
+        ],
         "auth_user": [
           "usera",
           "userb"
@@ -242,18 +244,12 @@
 
 #### mode
 
+==必填==
+
 `and` 或 `or`
 
 #### rules
 
-包括的默认规则。
-
-#### invert
-
-反选匹配结果。
-
-#### outbound
-
 ==必填==
 
-目标出站的标签。
+包括的默认规则。

docs/configuration/shared/multiplex.md

@@ -10,7 +10,8 @@
   "protocol": "smux",
   "max_connections": 4,
   "min_streams": 4,
-  "max_streams": 0
+  "max_streams": 0,
+  "padding": false
 }
 ```
 
@@ -28,8 +29,9 @@ Multiplex protocol.
 |----------|------------------------------------|
 | smux     | https://github.com/xtaci/smux      |
 | yamux    | https://github.com/hashicorp/yamux |
+| h2mux    | https://golang.org/x/net/http2     |
 
-SMux is used by default.
+h2mux is used by default.
 
 #### max_connections
 
@@ -48,3 +50,12 @@ Conflict with `max_streams`.
 Maximum multiplexed streams in a connection before opening a new connection.
 
 Conflict with `max_connections` and `min_streams`.
+
+#### padding
+
+!!! info
+
+    Requires sing-box server version 1.3-beta9 or later.
+
+Enable padding.
+

docs/configuration/shared/multiplex.zh.md

@@ -28,8 +28,9 @@
 |-------|------------------------------------|
 | smux  | https://github.com/xtaci/smux      |
 | yamux | https://github.com/hashicorp/yamux |
+| h2mux | https://golang.org/x/net/http2     |
 
-默认使用 SMux。
+默认使用 h2mux。
 
 #### max_connections
 
@@ -47,4 +48,13 @@
 
 在打开新连接之前，连接中的最大多路复用流数量。
 
-与 `max_connections` 和 `min_streams` 冲突。
+与 `max_connections` 和 `min_streams` 冲突。
+
+#### padding
+
+!!! info
+
+    需要 sing-box 服务器版本 1.3-beta9 或更高。
+
+启用填充。
+

docs/examples/index.md

@@ -8,3 +8,4 @@ Configuration examples for sing-box.
 * [Shadowsocks](./shadowsocks)
 * [ShadowTLS](./shadowtls)
 * [Clash API](./clash-api)
+* [WireGuard Direct](./wireguard-direct)

docs/examples/index.zh.md

@@ -8,3 +8,4 @@ sing-box 的配置示例。
 * [Shadowsocks](./shadowsocks)
 * [ShadowTLS](./shadowtls)
 * [Clash API](./clash-api)
+* [WireGuard Direct](./wireguard-direct)

docs/examples/wireguard-direct.md

@@ -0,0 +1,90 @@
+# WireGuard Direct
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "tag": "google",
+        "address": "tls://8.8.8.8"
+      },
+      {
+        "tag": "local",
+        "address": "223.5.5.5",
+        "detour": "direct"
+      }
+    ],
+    "rules": [
+      {
+        "geoip": "cn",
+        "server": "direct"
+      }
+    ],
+    "reverse_mapping": true
+  },
+  "inbounds": [
+    {
+      "type": "tun",
+      "tag": "tun",
+      "inet4_address": "172.19.0.1/30",
+      "auto_route": true,
+      "sniff": true,
+      "stack": "system"
+    }
+  ],
+  "outbounds": [
+    {
+      "type": "wireguard",
+      "tag": "wg",
+      "server": "127.0.0.1",
+      "server_port": 2345,
+      "local_address": [
+        "172.19.0.1/128"
+      ],
+      "private_key": "KLTnpPY03pig/WC3zR8U7VWmpANHPFh2/4pwICGJ5Fk=",
+      "peer_public_key": "uvNabcamf6Rs0vzmcw99jsjTJbxo6eWGOykSY66zsUk="
+    },
+    {
+      "type": "dns",
+      "tag": "dns"
+    },
+    {
+      "type": "direct",
+      "tag": "direct"
+    },
+    {
+      "type": "block",
+      "tag": "block"
+    }
+  ],
+  "route": {
+    "ip_rules": [
+      {
+        "port": 53,
+        "action": "return"
+      },
+      {
+        "geoip": "cn",
+        "geosite": "cn",
+        "action": "return"
+      },
+      {
+        "action": "direct",
+        "outbound": "wg"
+      }
+    ],
+    "rules": [
+      {
+        "protocol": "dns",
+        "outbound": "dns"
+      },
+      {
+        "geoip": "cn",
+        "geosite": "cn",
+        "outbound": "direct"
+      }
+    ],
+    "auto_detect_interface": true
+  }
+}
+```

docs/faq/fakeip.md

@@ -0,0 +1,20 @@
+# FakeIP
+
+FakeIP refers to a type of behavior in a program that simultaneously hijacks both DNS and connection requests. It
+responds to DNS requests with virtual results and restores mapping when accepting connections.
+
+#### Advantage
+
+* Retrieve the requested domain in places like IP routing (L3) where traffic detection is not possible to assist with routing.
+* Decrease an RTT on the first TCP request to a domain (the most common reason).
+
+#### Limitation
+
+* Its mechanism breaks applications that depend on returning correct remote addresses.
+* Only A and AAAA (IP) requests are supported, which may break applications that rely on other requests.
+
+#### Recommendation
+
+* Do not use if you do not need L3 routing.
+* If using tun, make sure FakeIP ranges is included in the tun's routes.
+* Enable `experimental.clash_api.store_fakeip` to persist FakeIP records, or use `dns.rules.rewrite_ttl` to avoid losing records after program restart in DNS cached environments.

docs/faq/fakeip.zh.md

@@ -0,0 +1,19 @@
+# FakeIP
+
+FakeIP 是指同时劫持 DNS 和连接请求的程序中的一种行为。它通过虚拟结果响应 DNS 请求，在接受连接时恢复映射。
+
+#### 优点
+
+* 在像 L3 路由这样无法进行流量探测的地方检索所请求的域名，以协助路由。
+* 减少对一个域的第一个 TCP 请求的 RTT（这是最常见的原因）。
+
+#### 限制
+
+* 它的机制会破坏依赖于返回正确远程地址的应用程序。
+* 仅支持 A 和 AAAA（IP）请求，这可能会破坏依赖于其他请求的应用程序。
+
+#### 建议
+
+* 如果不需要 L3 路由，请勿使用。
+* 如果使用 tun，请确保 tun 路由中包含 FakeIP 地址范围。
+* 启用 `experimental.clash_api.store_fakeip` 以持久化 FakeIP 记录，或者使用 `dns.rules.rewrite_ttl` 避免程序重启后在 DNS 被缓存的环境中丢失记录。

docs/faq/index.md

@@ -11,12 +11,6 @@ it doesn't fit, because it compromises performance or design clarity, or because
 If it bothers you that sing-box is missing feature X, please forgive us and investigate the features that sing-box does
 have. You might find that they compensate in interesting ways for the lack of X.
 
-#### Fake IP
-
-Fake IP (also called Fake DNS) is an invasive and imperfect DNS solution that breaks expected behavior, causes DNS leaks
-and makes many software unusable. It is recommended by some software that lacks DNS processing and caching, but sing-box
-does not need this.
-
 #### Naive outbound
 
 NaïveProxy's main function is chromium's network stack, and it makes no sense to implement only its transport protocol.

docs/faq/index.zh.md

@@ -9,11 +9,6 @@
 
 如果 sing-box 缺少功能 X 让您感到困扰，请原谅我们并调查 sing-box 确实有的功能。 您可能会发现它们以有趣的方式弥补了 X 的缺失。
 
-#### Fake IP
-
-Fake IP（也称 Fake DNS）是一种侵入性和不完善的 DNS 解决方案，它打破了预期的行为，导致 DNS 泄漏并使许多软件无法使用。
-一些缺乏 DNS 处理和缓存的软件推荐使用它，但 sing-box 不需要。
-
 #### Naive 出站
 
 NaïveProxy 的主要功能是 chromium 的网络栈，仅实现它的传输协议是舍本逐末的。

docs/installation/clients/sfa.md

@@ -12,5 +12,6 @@ Experimental Android client for sing-box.
 
 #### Note
 
-* Working directory is at `/sdcard/Android/data/io.nekohasekai.sfa/files` (External files directory)
-* User Agent is `SFA/$version ($version_code; sing-box $sing_box_version)` in the remote profile request
+* User Agent in remote profile request is `SFA/$version ($version_code; sing-box $sing_box_version)`
+* The working directory is located at `/sdcard/Android/data/io.nekohasekai.sfa/files` (External files directory)
+* Crash logs is located in `$working_directory/stderr.log`

docs/installation/clients/sfa.zh.md

@@ -12,5 +12,6 @@
 
 #### 注意事项
 
-* 工作目录位于 `/sdcard/Android/data/io.nekohasekai.sfa/files` (外部文件目录)
 * 远程配置文件请求中的 User Agent 为 `SFA/$version ($version_code; sing-box $sing_box_version)`
+* 工作目录位于 `/sdcard/Android/data/io.nekohasekai.sfa/files` (外部文件目录)
+* 崩溃日志位于 `$working_directory/stderr.log`

docs/installation/clients/sfi.md

@@ -13,8 +13,8 @@ Experimental iOS client for sing-box.
 
 #### Note
 
-* `system` tun stack not working on iOS
-* User Agent is `SFI/$version ($version_code; sing-box $sing_box_version)` in the remote profile request
+* User Agent in remote profile request is `SFI/$version ($version_code; sing-box $sing_box_version)`
+* Crash logs is located in `Settings` -> `View Service Log`
 
 #### Privacy policy
 

docs/installation/clients/sfi.zh.md

@@ -13,8 +13,8 @@
 
 #### 注意事项
 
-* `system` tun stack 在 iOS 不工作
 * 远程配置文件请求中的 User Agent 为 `SFI/$version ($version_code; sing-box $sing_box_version)`
+* 崩溃日志位于 `设置` -> `查看服务日志`
 
 #### 隐私政策
 

experimental/clashapi.go

@@ -1,6 +1,7 @@
 package experimental
 
 import (
+	"context"
 	"os"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -8,7 +9,7 @@ import (
 	"github.com/sagernet/sing-box/option"
 )
 
-type ClashServerConstructor = func(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error)
+type ClashServerConstructor = func(ctx context.Context, router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error)
 
 var clashServerConstructor ClashServerConstructor
 
@@ -16,9 +17,9 @@ func RegisterClashServerConstructor(constructor ClashServerConstructor) {
 	clashServerConstructor = constructor
 }
 
-func NewClashServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
+func NewClashServer(ctx context.Context, router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
 	if clashServerConstructor == nil {
 		return nil, os.ErrInvalid
 	}
-	return clashServerConstructor(router, logFactory, options)
+	return clashServerConstructor(ctx, router, logFactory, options)
 }

experimental/clashapi/api_meta.go

@@ -0,0 +1,78 @@
+package clashapi
+
+import (
+	"bytes"
+	"net/http"
+	"time"
+
+	"github.com/sagernet/sing-box/common/json"
+	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
+	"github.com/sagernet/websocket"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+)
+
+// API created by Clash.Meta
+
+func (s *Server) setupMetaAPI(r chi.Router) {
+	r.Get("/memory", memory(s.trafficManager))
+	r.Mount("/group", groupRouter(s))
+}
+
+type Memory struct {
+	Inuse   uint64 `json:"inuse"`
+	OSLimit uint64 `json:"oslimit"` // maybe we need it in the future
+}
+
+func memory(trafficManager *trafficontrol.Manager) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var wsConn *websocket.Conn
+		if websocket.IsWebSocketUpgrade(r) {
+			var err error
+			wsConn, err = upgrader.Upgrade(w, r, nil)
+			if err != nil {
+				return
+			}
+		}
+
+		if wsConn == nil {
+			w.Header().Set("Content-Type", "application/json")
+			render.Status(r, http.StatusOK)
+		}
+
+		tick := time.NewTicker(time.Second)
+		defer tick.Stop()
+		buf := &bytes.Buffer{}
+		var err error
+		first := true
+		for range tick.C {
+			buf.Reset()
+
+			inuse := trafficManager.Snapshot().Memory
+
+			// make chat.js begin with zero
+			// this is shit var,but we need output 0 for first time
+			if first {
+				first = false
+				inuse = 0
+			}
+			if err := json.NewEncoder(buf).Encode(Memory{
+				Inuse:   inuse,
+				OSLimit: 0,
+			}); err != nil {
+				break
+			}
+			if wsConn == nil {
+				_, err = w.Write(buf.Bytes())
+				w.(http.Flusher).Flush()
+			} else {
+				err = wsConn.WriteMessage(websocket.TextMessage, buf.Bytes())
+			}
+
+			if err != nil {
+				break
+			}
+		}
+	}
+}

experimental/clashapi/api_meta_group.go

@@ -0,0 +1,136 @@
+package clashapi
+
+import (
+	"context"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/badjson"
+	"github.com/sagernet/sing-box/common/urltest"
+	"github.com/sagernet/sing-box/outbound"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/batch"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+)
+
+func groupRouter(server *Server) http.Handler {
+	r := chi.NewRouter()
+	r.Get("/", getGroups(server))
+	r.Route("/{name}", func(r chi.Router) {
+		r.Use(parseProxyName, findProxyByName(server.router))
+		r.Get("/", getGroup(server))
+		r.Get("/delay", getGroupDelay(server))
+	})
+	return r
+}
+
+func getGroups(server *Server) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		groups := common.Map(common.Filter(server.router.Outbounds(), func(it adapter.Outbound) bool {
+			_, isGroup := it.(adapter.OutboundGroup)
+			return isGroup
+		}), func(it adapter.Outbound) *badjson.JSONObject {
+			return proxyInfo(server, it)
+		})
+		render.JSON(w, r, render.M{
+			"proxies": groups,
+		})
+	}
+}
+
+func getGroup(server *Server) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		proxy := r.Context().Value(CtxKeyProxy).(adapter.Outbound)
+		if _, ok := proxy.(adapter.OutboundGroup); ok {
+			render.JSON(w, r, proxyInfo(server, proxy))
+			return
+		}
+		render.Status(r, http.StatusNotFound)
+		render.JSON(w, r, ErrNotFound)
+	}
+}
+
+func getGroupDelay(server *Server) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		proxy := r.Context().Value(CtxKeyProxy).(adapter.Outbound)
+		group, ok := proxy.(adapter.OutboundGroup)
+		if !ok {
+			render.Status(r, http.StatusNotFound)
+			render.JSON(w, r, ErrNotFound)
+			return
+		}
+
+		query := r.URL.Query()
+		url := query.Get("url")
+		if strings.HasPrefix(url, "http://") {
+			url = ""
+		}
+		timeout, err := strconv.ParseInt(query.Get("timeout"), 10, 32)
+		if err != nil {
+			render.Status(r, http.StatusBadRequest)
+			render.JSON(w, r, ErrBadRequest)
+			return
+		}
+
+		ctx, cancel := context.WithTimeout(r.Context(), time.Millisecond*time.Duration(timeout))
+		defer cancel()
+
+		var result map[string]uint16
+		if urlTestGroup, isURLTestGroup := group.(adapter.URLTestGroup); isURLTestGroup {
+			result, err = urlTestGroup.URLTest(ctx, url)
+		} else {
+			outbounds := common.FilterNotNil(common.Map(group.All(), func(it string) adapter.Outbound {
+				itOutbound, _ := server.router.Outbound(it)
+				return itOutbound
+			}))
+			b, _ := batch.New(ctx, batch.WithConcurrencyNum[any](10))
+			checked := make(map[string]bool)
+			result = make(map[string]uint16)
+			var resultAccess sync.Mutex
+			for _, detour := range outbounds {
+				tag := detour.Tag()
+				realTag := outbound.RealTag(detour)
+				if checked[realTag] {
+					continue
+				}
+				checked[realTag] = true
+				p, loaded := server.router.Outbound(realTag)
+				if !loaded {
+					continue
+				}
+				b.Go(realTag, func() (any, error) {
+					t, err := urltest.URLTest(ctx, url, p)
+					if err != nil {
+						server.logger.Debug("outbound ", tag, " unavailable: ", err)
+						server.urlTestHistory.DeleteURLTestHistory(realTag)
+					} else {
+						server.logger.Debug("outbound ", tag, " available: ", t, "ms")
+						server.urlTestHistory.StoreURLTestHistory(realTag, &urltest.History{
+							Time:  time.Now(),
+							Delay: t,
+						})
+						resultAccess.Lock()
+						result[tag] = t
+						resultAccess.Unlock()
+					}
+					return nil, nil
+				})
+			}
+			b.Wait()
+		}
+
+		if err != nil {
+			render.Status(r, http.StatusGatewayTimeout)
+			render.JSON(w, r, newError(err.Error()))
+			return
+		}
+
+		render.JSON(w, r, result)
+	}
+}

experimental/clashapi/cache.go

@@ -3,21 +3,28 @@ package clashapi
 import (
 	"net/http"
 
+	"github.com/sagernet/sing-box/adapter"
+
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
 )
 
-func cacheRouter() http.Handler {
+func cacheRouter(router adapter.Router) http.Handler {
 	r := chi.NewRouter()
-	r.Post("/fakeip/flush", flushFakeip)
+	r.Post("/fakeip/flush", flushFakeip(router))
 	return r
 }
 
-func flushFakeip(w http.ResponseWriter, r *http.Request) {
-	/*if err := cachefile.Cache().FlushFakeip(); err != nil {
-		render.Status(r, http.StatusInternalServerError)
-		render.JSON(w, r, newError(err.Error()))
-		return
-	}*/
-	render.NoContent(w, r)
+func flushFakeip(router adapter.Router) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if cacheFile := router.ClashServer().CacheFile(); cacheFile != nil {
+			err := cacheFile.FakeIPReset()
+			if err != nil {
+				render.Status(r, http.StatusInternalServerError)
+				render.JSON(w, r, newError(err.Error()))
+				return
+			}
+		}
+		render.NoContent(w, r)
+	}
 }

experimental/clashapi/cachefile/fakeip.go

@@ -0,0 +1,77 @@
+package cachefile
+
+import (
+	"net/netip"
+	"os"
+
+	"github.com/sagernet/sing-box/adapter"
+
+	"go.etcd.io/bbolt"
+)
+
+var (
+	bucketFakeIP = []byte("fakeip")
+	keyMetadata  = []byte("metadata")
+)
+
+func (c *CacheFile) FakeIPMetadata() *adapter.FakeIPMetadata {
+	var metadata adapter.FakeIPMetadata
+	err := c.DB.View(func(tx *bbolt.Tx) error {
+		bucket := tx.Bucket(bucketFakeIP)
+		if bucket == nil {
+			return nil
+		}
+		metadataBinary := bucket.Get(keyMetadata)
+		if len(metadataBinary) == 0 {
+			return os.ErrInvalid
+		}
+		return metadata.UnmarshalBinary(metadataBinary)
+	})
+	if err != nil {
+		return nil
+	}
+	return &metadata
+}
+
+func (c *CacheFile) FakeIPSaveMetadata(metadata *adapter.FakeIPMetadata) error {
+	return c.DB.Batch(func(tx *bbolt.Tx) error {
+		bucket, err := tx.CreateBucketIfNotExists(bucketFakeIP)
+		if err != nil {
+			return err
+		}
+		metadataBinary, err := metadata.MarshalBinary()
+		if err != nil {
+			return err
+		}
+		return bucket.Put(keyMetadata, metadataBinary)
+	})
+}
+
+func (c *CacheFile) FakeIPStore(address netip.Addr, domain string) error {
+	return c.DB.Batch(func(tx *bbolt.Tx) error {
+		bucket, err := tx.CreateBucketIfNotExists(bucketFakeIP)
+		if err != nil {
+			return err
+		}
+		return bucket.Put(address.AsSlice(), []byte(domain))
+	})
+}
+
+func (c *CacheFile) FakeIPLoad(address netip.Addr) (string, bool) {
+	var domain string
+	_ = c.DB.View(func(tx *bbolt.Tx) error {
+		bucket := tx.Bucket(bucketFakeIP)
+		if bucket == nil {
+			return nil
+		}
+		domain = string(bucket.Get(address.AsSlice()))
+		return nil
+	})
+	return domain, domain != ""
+}
+
+func (c *CacheFile) FakeIPReset() error {
+	return c.DB.Batch(func(tx *bbolt.Tx) error {
+		return tx.DeleteBucket(bucketFakeIP)
+	})
+}

experimental/clashapi/connections.go

@@ -6,6 +6,7 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/json"
 	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
 	"github.com/sagernet/websocket"
@@ -14,10 +15,10 @@ import (
 	"github.com/go-chi/render"
 )
 
-func connectionRouter(trafficManager *trafficontrol.Manager) http.Handler {
+func connectionRouter(router adapter.Router, trafficManager *trafficontrol.Manager) http.Handler {
 	r := chi.NewRouter()
 	r.Get("/", getConnections(trafficManager))
-	r.Delete("/", closeAllConnections(trafficManager))
+	r.Delete("/", closeAllConnections(router, trafficManager))
 	r.Delete("/{id}", closeConnection(trafficManager))
 	return r
 }
@@ -86,12 +87,13 @@ func closeConnection(trafficManager *trafficontrol.Manager) func(w http.Response
 	}
 }
 
-func closeAllConnections(trafficManager *trafficontrol.Manager) func(w http.ResponseWriter, r *http.Request) {
+func closeAllConnections(router adapter.Router, trafficManager *trafficontrol.Manager) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		snapshot := trafficManager.Snapshot()
 		for _, c := range snapshot.Connections {
 			c.Close()
 		}
+		router.ResetNetwork()
 		render.NoContent(w, r)
 	}
 }

experimental/clashapi/proxies.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"sort"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -133,7 +134,7 @@ func getProxies(server *Server, router adapter.Router) func(w http.ResponseWrite
 			defaultTag = allProxies[0]
 		}
 
-		sort.Slice(allProxies, func(i, j int) bool {
+		sort.SliceStable(allProxies, func(i, j int) bool {
 			return allProxies[i] == defaultTag
 		})
 
@@ -214,6 +215,9 @@ func getProxyDelay(server *Server) func(w http.ResponseWriter, r *http.Request)
 	return func(w http.ResponseWriter, r *http.Request) {
 		query := r.URL.Query()
 		url := query.Get("url")
+		if strings.HasPrefix(url, "http://") {
+			url = ""
+		}
 		timeout, err := strconv.ParseInt(query.Get("timeout"), 10, 16)
 		if err != nil {
 			render.Status(r, http.StatusBadRequest)

experimental/clashapi/server.go

@@ -23,6 +23,7 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service/filemanager"
 	"github.com/sagernet/websocket"
 
 	"github.com/go-chi/chi/v5"
@@ -37,6 +38,7 @@ func init() {
 var _ adapter.ClashServer = (*Server)(nil)
 
 type Server struct {
+	ctx            context.Context
 	router         adapter.Router
 	logger         log.Logger
 	httpServer     *http.Server
@@ -44,29 +46,38 @@ type Server struct {
 	urlTestHistory *urltest.HistoryStorage
 	mode           string
 	storeSelected  bool
+	storeFakeIP    bool
 	cacheFilePath  string
 	cacheFile      adapter.ClashCacheFile
+
+	externalUI               string
+	externalUIDownloadURL    string
+	externalUIDownloadDetour string
 }
 
-func NewServer(router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
+func NewServer(ctx context.Context, router adapter.Router, logFactory log.ObservableFactory, options option.ClashAPIOptions) (adapter.ClashServer, error) {
 	trafficManager := trafficontrol.NewManager()
 	chiRouter := chi.NewRouter()
 	server := &Server{
+		ctx:    ctx,
 		router: router,
 		logger: logFactory.NewLogger("clash-api"),
 		httpServer: &http.Server{
 			Addr:    options.ExternalController,
 			Handler: chiRouter,
 		},
-		trafficManager: trafficManager,
-		urlTestHistory: urltest.NewHistoryStorage(),
-		mode:           strings.ToLower(options.DefaultMode),
+		trafficManager:           trafficManager,
+		urlTestHistory:           urltest.NewHistoryStorage(),
+		mode:                     strings.ToLower(options.DefaultMode),
+		storeSelected:            options.StoreSelected,
+		storeFakeIP:              options.StoreFakeIP,
+		externalUIDownloadURL:    options.ExternalUIDownloadURL,
+		externalUIDownloadDetour: options.ExternalUIDownloadDetour,
 	}
 	if server.mode == "" {
 		server.mode = "rule"
 	}
-	if options.StoreSelected {
-		server.storeSelected = true
+	if options.StoreSelected || options.StoreFakeIP {
 		cachePath := os.ExpandEnv(options.CacheFile)
 		if cachePath == "" {
 			cachePath = "cache.db"
@@ -74,7 +85,7 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 		if foundPath, loaded := C.FindPath(cachePath); loaded {
 			cachePath = foundPath
 		} else {
-			cachePath = C.BasePath(cachePath)
+			cachePath = filemanager.BasePath(ctx, cachePath)
 		}
 		server.cacheFilePath = cachePath
 	}
@@ -94,17 +105,20 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 		r.Mount("/configs", configRouter(server, logFactory, server.logger))
 		r.Mount("/proxies", proxyRouter(server, router))
 		r.Mount("/rules", ruleRouter(router))
-		r.Mount("/connections", connectionRouter(trafficManager))
+		r.Mount("/connections", connectionRouter(router, trafficManager))
 		r.Mount("/providers/proxies", proxyProviderRouter())
 		r.Mount("/providers/rules", ruleProviderRouter())
 		r.Mount("/script", scriptRouter())
 		r.Mount("/profile", profileRouter())
-		r.Mount("/cache", cacheRouter())
+		r.Mount("/cache", cacheRouter(router))
 		r.Mount("/dns", dnsRouter(router))
+
+		server.setupMetaAPI(r)
 	})
 	if options.ExternalUI != "" {
+		server.externalUI = filemanager.BasePath(ctx, os.ExpandEnv(options.ExternalUI))
 		chiRouter.Group(func(r chi.Router) {
-			fs := http.StripPrefix("/ui", http.FileServer(http.Dir(C.BasePath(os.ExpandEnv(options.ExternalUI)))))
+			fs := http.StripPrefix("/ui", http.FileServer(http.Dir(server.externalUI)))
 			r.Get("/ui", http.RedirectHandler("/ui/", http.StatusTemporaryRedirect).ServeHTTP)
 			r.Get("/ui/*", func(w http.ResponseWriter, r *http.Request) {
 				fs.ServeHTTP(w, r)
@@ -126,6 +140,7 @@ func (s *Server) PreStart() error {
 }
 
 func (s *Server) Start() error {
+	s.checkAndDownloadExternalUI()
 	listener, err := net.Listen("tcp", s.httpServer.Addr)
 	if err != nil {
 		return E.Cause(err, "external controller listen error")
@@ -156,6 +171,10 @@ func (s *Server) StoreSelected() bool {
 	return s.storeSelected
 }
 
+func (s *Server) StoreFakeIP() bool {
+	return s.storeFakeIP
+}
+
 func (s *Server) CacheFile() adapter.ClashCacheFile {
 	return s.cacheFile
 }
@@ -392,5 +411,5 @@ func getLogs(logFactory log.ObservableFactory) func(w http.ResponseWriter, r *ht
 }
 
 func version(w http.ResponseWriter, r *http.Request) {
-	render.JSON(w, r, render.M{"version": "sing-box " + C.Version, "premium": true})
+	render.JSON(w, r, render.M{"version": "sing-box " + C.Version, "premium": true, "meta": true})
 }

experimental/clashapi/server_resources.go

@@ -0,0 +1,164 @@
+package clashapi
+
+import (
+	"archive/zip"
+	"context"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"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"
+	"github.com/sagernet/sing/service/filemanager"
+)
+
+func (s *Server) checkAndDownloadExternalUI() {
+	if s.externalUI == "" {
+		return
+	}
+	entries, err := os.ReadDir(s.externalUI)
+	if err != nil {
+		os.MkdirAll(s.externalUI, 0o755)
+	}
+	if len(entries) == 0 {
+		err = s.downloadExternalUI()
+		if err != nil {
+			s.logger.Error("download external ui error: ", err)
+		}
+	}
+}
+
+func (s *Server) downloadExternalUI() error {
+	var downloadURL string
+	if s.externalUIDownloadURL != "" {
+		downloadURL = s.externalUIDownloadURL
+	} else {
+		downloadURL = "https://github.com/MetaCubeX/Yacd-meta/archive/gh-pages.zip"
+	}
+	s.logger.Info("downloading external ui")
+	var detour adapter.Outbound
+	if s.externalUIDownloadDetour != "" {
+		outbound, loaded := s.router.Outbound(s.externalUIDownloadDetour)
+		if !loaded {
+			return E.New("detour outbound not found: ", s.externalUIDownloadDetour)
+		}
+		detour = outbound
+	} else {
+		detour = s.router.DefaultOutbound(N.NetworkTCP)
+	}
+	httpClient := &http.Client{
+		Transport: &http.Transport{
+			ForceAttemptHTTP2:   true,
+			TLSHandshakeTimeout: 5 * time.Second,
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				return detour.DialContext(ctx, network, M.ParseSocksaddr(addr))
+			},
+		},
+	}
+	defer httpClient.CloseIdleConnections()
+	response, err := httpClient.Get(downloadURL)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		return E.New("download external ui failed: ", response.Status)
+	}
+	err = s.downloadZIP(filepath.Base(downloadURL), response.Body, s.externalUI)
+	if err != nil {
+		removeAllInDirectory(s.externalUI)
+	}
+	return err
+}
+
+func (s *Server) downloadZIP(name string, body io.Reader, output string) error {
+	tempFile, err := filemanager.CreateTemp(s.ctx, name)
+	if err != nil {
+		return err
+	}
+	defer os.Remove(tempFile.Name())
+	_, err = io.Copy(tempFile, body)
+	tempFile.Close()
+	if err != nil {
+		return err
+	}
+	reader, err := zip.OpenReader(tempFile.Name())
+	if err != nil {
+		return err
+	}
+	defer reader.Close()
+	trimDir := zipIsInSingleDirectory(reader.File)
+	for _, file := range reader.File {
+		if file.FileInfo().IsDir() {
+			continue
+		}
+		pathElements := strings.Split(file.Name, "/")
+		if trimDir {
+			pathElements = pathElements[1:]
+		}
+		saveDirectory := output
+		if len(pathElements) > 1 {
+			saveDirectory = filepath.Join(saveDirectory, filepath.Join(pathElements[:len(pathElements)-1]...))
+		}
+		err = os.MkdirAll(saveDirectory, 0o755)
+		if err != nil {
+			return err
+		}
+		savePath := filepath.Join(saveDirectory, pathElements[len(pathElements)-1])
+		err = downloadZIPEntry(s.ctx, file, savePath)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func downloadZIPEntry(ctx context.Context, zipFile *zip.File, savePath string) error {
+	saveFile, err := filemanager.Create(ctx, savePath)
+	if err != nil {
+		return err
+	}
+	defer saveFile.Close()
+	reader, err := zipFile.Open()
+	if err != nil {
+		return err
+	}
+	defer reader.Close()
+	return common.Error(io.Copy(saveFile, reader))
+}
+
+func removeAllInDirectory(directory string) {
+	dirEntries, err := os.ReadDir(directory)
+	if err != nil {
+		return
+	}
+	for _, dirEntry := range dirEntries {
+		os.RemoveAll(filepath.Join(directory, dirEntry.Name()))
+	}
+}
+
+func zipIsInSingleDirectory(files []*zip.File) bool {
+	var singleDirectory string
+	for _, file := range files {
+		if file.FileInfo().IsDir() {
+			continue
+		}
+		pathElements := strings.Split(file.Name, "/")
+		if len(pathElements) == 0 {
+			return false
+		}
+		if singleDirectory == "" {
+			singleDirectory = pathElements[0]
+		} else if singleDirectory != pathElements[0] {
+			return false
+		}
+	}
+	return true
+}

experimental/clashapi/trafficontrol/manager.go

@@ -1,35 +1,33 @@
 package trafficontrol
 
 import (
+	"runtime"
 	"time"
 
 	"github.com/sagernet/sing-box/experimental/clashapi/compatible"
-
-	"go.uber.org/atomic"
+	"github.com/sagernet/sing/common/atomic"
 )
 
 type Manager struct {
-	connections   compatible.Map[string, tracker]
-	uploadTemp    *atomic.Int64
-	downloadTemp  *atomic.Int64
-	uploadBlip    *atomic.Int64
-	downloadBlip  *atomic.Int64
-	uploadTotal   *atomic.Int64
-	downloadTotal *atomic.Int64
-	ticker        *time.Ticker
-	done          chan struct{}
+	uploadTemp    atomic.Int64
+	downloadTemp  atomic.Int64
+	uploadBlip    atomic.Int64
+	downloadBlip  atomic.Int64
+	uploadTotal   atomic.Int64
+	downloadTotal atomic.Int64
+
+	connections compatible.Map[string, tracker]
+	ticker      *time.Ticker
+	done        chan struct{}
+	// process     *process.Process
+	memory uint64
 }
 
 func NewManager() *Manager {
 	manager := &Manager{
-		uploadTemp:    atomic.NewInt64(0),
-		downloadTemp:  atomic.NewInt64(0),
-		uploadBlip:    atomic.NewInt64(0),
-		downloadBlip:  atomic.NewInt64(0),
-		uploadTotal:   atomic.NewInt64(0),
-		downloadTotal: atomic.NewInt64(0),
-		ticker:        time.NewTicker(time.Second),
-		done:          make(chan struct{}),
+		ticker: time.NewTicker(time.Second),
+		done:   make(chan struct{}),
+		// process: &process.Process{Pid: int32(os.Getpid())},
 	}
 	go manager.handle()
 	return manager
@@ -64,10 +62,18 @@ func (m *Manager) Snapshot() *Snapshot {
 		return true
 	})
 
+	//if memoryInfo, err := m.process.MemoryInfo(); err == nil {
+	//	m.memory = memoryInfo.RSS
+	//} else {
+	var memStats runtime.MemStats
+	runtime.ReadMemStats(&memStats)
+	m.memory = memStats.StackInuse + memStats.HeapInuse + memStats.HeapIdle - memStats.HeapReleased
+
 	return &Snapshot{
 		UploadTotal:   m.uploadTotal.Load(),
 		DownloadTotal: m.downloadTotal.Load(),
 		Connections:   connections,
+		Memory:        m.memory,
 	}
 }
 
@@ -106,4 +112,5 @@ type Snapshot struct {
 	DownloadTotal int64     `json:"downloadTotal"`
 	UploadTotal   int64     `json:"uploadTotal"`
 	Connections   []tracker `json:"connections"`
+	Memory        uint64    `json:"memory"`
 }

experimental/clashapi/trafficontrol/tracker.go

@@ -1,17 +1,18 @@
 package trafficontrol
 
 import (
+	"encoding/json"
 	"net"
 	"net/netip"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/experimental/trackerconn"
 	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/atomic"
+	"github.com/sagernet/sing/common/bufio"
 	N "github.com/sagernet/sing/common/network"
 
-	"github.com/gofrs/uuid"
-	"go.uber.org/atomic"
+	"github.com/gofrs/uuid/v5"
 )
 
 type Metadata struct {
@@ -43,6 +44,19 @@ type trackerInfo struct {
 	RulePayload   string        `json:"rulePayload"`
 }
 
+func (t trackerInfo) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]any{
+		"id":          t.UUID.String(),
+		"metadata":    t.Metadata,
+		"upload":      t.UploadTotal.Load(),
+		"download":    t.DownloadTotal.Load(),
+		"start":       t.Start,
+		"chains":      t.Chain,
+		"rule":        t.Rule,
+		"rulePayload": t.RulePayload,
+	})
+}
+
 type tcpTracker struct {
 	N.ExtendedConn `json:"-"`
 	*trackerInfo
@@ -97,17 +111,17 @@ func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router ad
 		next = group.Now()
 	}
 
-	upload := atomic.NewInt64(0)
-	download := atomic.NewInt64(0)
+	upload := new(atomic.Int64)
+	download := new(atomic.Int64)
 
 	t := &tcpTracker{
-		ExtendedConn: trackerconn.NewHook(conn, func(n int64) {
+		ExtendedConn: bufio.NewCounterConn(conn, []N.CountFunc{func(n int64) {
 			upload.Add(n)
 			manager.PushUploaded(n)
-		}, func(n int64) {
+		}}, []N.CountFunc{func(n int64) {
 			download.Add(n)
 			manager.PushDownloaded(n)
-		}),
+		}}),
 		manager: manager,
 		trackerInfo: &trackerInfo{
 			UUID:          uuid,
@@ -184,17 +198,17 @@ func NewUDPTracker(conn N.PacketConn, manager *Manager, metadata Metadata, route
 		next = group.Now()
 	}
 
-	upload := atomic.NewInt64(0)
-	download := atomic.NewInt64(0)
+	upload := new(atomic.Int64)
+	download := new(atomic.Int64)
 
 	ut := &udpTracker{
-		PacketConn: trackerconn.NewHookPacket(conn, func(n int64) {
+		PacketConn: bufio.NewCounterPacketConn(conn, []N.CountFunc{func(n int64) {
 			upload.Add(n)
 			manager.PushUploaded(n)
-		}, func(n int64) {
+		}}, []N.CountFunc{func(n int64) {
 			download.Add(n)
 			manager.PushDownloaded(n)
-		}),
+		}}),
 		manager: manager,
 		trackerInfo: &trackerInfo{
 			UUID:          uuid,

experimental/libbox/command_server.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/debug"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/observable"
 	"github.com/sagernet/sing/common/x/list"
@@ -71,7 +72,9 @@ func (s *CommandServer) loopConnection(listener net.Listener) {
 		go func() {
 			hErr := s.handleConnection(conn)
 			if hErr != nil && !E.IsClosed(err) {
-				log.Warn("log-server: process connection: ", hErr)
+				if debug.Enabled {
+					log.Warn("log-server: process connection: ", hErr)
+				}
 			}
 		}()
 	}

experimental/libbox/command_status.go

@@ -42,7 +42,7 @@ func (s *CommandServer) handleStatusConn(conn net.Conn) error {
 		}
 		select {
 		case <-ctx.Done():
-			return nil
+			return ctx.Err()
 		case <-ticker.C:
 		}
 	}

experimental/libbox/iterator.go

@@ -29,3 +29,19 @@ func (i *iterator[T]) Next() T {
 func (i *iterator[T]) HasNext() bool {
 	return len(i.values) > 0
 }
+
+type abstractIterator[T any] interface {
+	Next() T
+	HasNext() bool
+}
+
+func iteratorToArray[T any](iterator abstractIterator[T]) []T {
+	if iterator == nil {
+		return nil
+	}
+	var values []T
+	for iterator.HasNext() {
+		values = append(values, iterator.Next())
+	}
+	return values
+}

experimental/libbox/log.go

@@ -0,0 +1,53 @@
+//go:build darwin || linux
+
+package libbox
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+var stderrFile *os.File
+
+func RedirectStderr(path string) error {
+	if stats, err := os.Stat(path); err == nil && stats.Size() > 0 {
+		_ = os.Rename(path, path+".old")
+	}
+	outputFile, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	err = unix.Dup2(int(outputFile.Fd()), int(os.Stderr.Fd()))
+	if err != nil {
+		outputFile.Close()
+		os.Remove(outputFile.Name())
+		return err
+	}
+	stderrFile = outputFile
+	return nil
+}
+
+func RedirectStderrAsUser(path string, uid, gid int) error {
+	if stats, err := os.Stat(path); err == nil && stats.Size() > 0 {
+		_ = os.Rename(path, path+".old")
+	}
+	outputFile, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	err = outputFile.Chown(uid, gid)
+	if err != nil {
+		outputFile.Close()
+		os.Remove(outputFile.Name())
+		return err
+	}
+	err = unix.Dup2(int(outputFile.Fd()), int(os.Stderr.Fd()))
+	if err != nil {
+		outputFile.Close()
+		os.Remove(outputFile.Name())
+		return err
+	}
+	stderrFile = outputFile
+	return nil
+}

experimental/libbox/monitor.go

@@ -0,0 +1,183 @@
+package libbox
+
+import (
+	"context"
+	"net"
+	"net/netip"
+	"sync"
+
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/x/list"
+)
+
+var (
+	_ tun.DefaultInterfaceMonitor = (*platformDefaultInterfaceMonitor)(nil)
+	_ InterfaceUpdateListener     = (*platformDefaultInterfaceMonitor)(nil)
+)
+
+type platformDefaultInterfaceMonitor struct {
+	*platformInterfaceWrapper
+	errorHandler          E.Handler
+	networkAddresses      []networkAddress
+	defaultInterfaceName  string
+	defaultInterfaceIndex int
+	element               *list.Element[tun.NetworkUpdateCallback]
+	access                sync.Mutex
+	callbacks             list.List[tun.DefaultInterfaceUpdateCallback]
+}
+
+type networkAddress struct {
+	interfaceName  string
+	interfaceIndex int
+	addresses      []netip.Prefix
+}
+
+func (m *platformDefaultInterfaceMonitor) Start() error {
+	return m.iif.StartDefaultInterfaceMonitor(m)
+}
+
+func (m *platformDefaultInterfaceMonitor) Close() error {
+	return m.iif.CloseDefaultInterfaceMonitor(m)
+}
+
+func (m *platformDefaultInterfaceMonitor) DefaultInterfaceName(destination netip.Addr) string {
+	for _, address := range m.networkAddresses {
+		for _, prefix := range address.addresses {
+			if prefix.Contains(destination) {
+				return address.interfaceName
+			}
+		}
+	}
+	return m.defaultInterfaceName
+}
+
+func (m *platformDefaultInterfaceMonitor) DefaultInterfaceIndex(destination netip.Addr) int {
+	for _, address := range m.networkAddresses {
+		for _, prefix := range address.addresses {
+			if prefix.Contains(destination) {
+				return address.interfaceIndex
+			}
+		}
+	}
+	return m.defaultInterfaceIndex
+}
+
+func (m *platformDefaultInterfaceMonitor) OverrideAndroidVPN() bool {
+	return false
+}
+
+func (m *platformDefaultInterfaceMonitor) AndroidVPNEnabled() bool {
+	return false
+}
+
+func (m *platformDefaultInterfaceMonitor) RegisterCallback(callback tun.DefaultInterfaceUpdateCallback) *list.Element[tun.DefaultInterfaceUpdateCallback] {
+	m.access.Lock()
+	defer m.access.Unlock()
+	return m.callbacks.PushBack(callback)
+}
+
+func (m *platformDefaultInterfaceMonitor) UnregisterCallback(element *list.Element[tun.DefaultInterfaceUpdateCallback]) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	m.callbacks.Remove(element)
+}
+
+func (m *platformDefaultInterfaceMonitor) UpdateDefaultInterface(interfaceName string, interfaceIndex32 int32) {
+	var err error
+	if m.iif.UsePlatformInterfaceGetter() {
+		err = m.updateInterfacesPlatform()
+	} else {
+		err = m.updateInterfaces()
+	}
+	if err == nil {
+		err = m.router.UpdateInterfaces()
+	}
+	if err != nil {
+		m.errorHandler.NewError(context.Background(), E.Cause(err, "update interfaces"))
+	}
+	interfaceIndex := int(interfaceIndex32)
+	if interfaceName == "" {
+		for _, netIf := range m.networkAddresses {
+			if netIf.interfaceIndex == interfaceIndex {
+				interfaceName = netIf.interfaceName
+				break
+			}
+		}
+	} else if interfaceIndex == -1 {
+		for _, netIf := range m.networkAddresses {
+			if netIf.interfaceName == interfaceName {
+				interfaceIndex = netIf.interfaceIndex
+				break
+			}
+		}
+	}
+	if interfaceName == "" {
+		m.errorHandler.NewError(context.Background(), E.New("invalid interface name for ", interfaceIndex))
+		return
+	} else if interfaceIndex == -1 {
+		m.errorHandler.NewError(context.Background(), E.New("invalid interface index for ", interfaceName))
+		return
+	}
+	if m.defaultInterfaceName == interfaceName && m.defaultInterfaceIndex == interfaceIndex {
+		return
+	}
+	m.defaultInterfaceName = interfaceName
+	m.defaultInterfaceIndex = interfaceIndex
+	m.access.Lock()
+	callbacks := m.callbacks.Array()
+	m.access.Unlock()
+	for _, callback := range callbacks {
+		err = callback(tun.EventInterfaceUpdate)
+		if err != nil {
+			m.errorHandler.NewError(context.Background(), err)
+		}
+	}
+}
+
+func (m *platformDefaultInterfaceMonitor) updateInterfaces() error {
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		return err
+	}
+	var addresses []networkAddress
+	for _, iif := range interfaces {
+		var netAddresses []net.Addr
+		netAddresses, err = iif.Addrs()
+		if err != nil {
+			return err
+		}
+		var address networkAddress
+		address.interfaceName = iif.Name
+		address.interfaceIndex = iif.Index
+		address.addresses = common.Map(common.FilterIsInstance(netAddresses, func(it net.Addr) (*net.IPNet, bool) {
+			value, loaded := it.(*net.IPNet)
+			return value, loaded
+		}), func(it *net.IPNet) netip.Prefix {
+			bits, _ := it.Mask.Size()
+			return netip.PrefixFrom(M.AddrFromIP(it.IP), bits)
+		})
+		addresses = append(addresses, address)
+	}
+	m.networkAddresses = addresses
+	return nil
+}
+
+func (m *platformDefaultInterfaceMonitor) updateInterfacesPlatform() error {
+	interfaces, err := m.Interfaces()
+	if err != nil {
+		return err
+	}
+	var addresses []networkAddress
+	for _, iif := range interfaces {
+		var address networkAddress
+		address.interfaceName = iif.Name
+		address.interfaceIndex = iif.Index
+		// address.addresses = common.Map(iif.Addresses, netip.MustParsePrefix)
+		addresses = append(addresses, address)
+	}
+	m.networkAddresses = addresses
+	return nil
+}