documentation: Update changelog

Cannot use errno as method and variable due to conflict with objc

.goreleaser.yaml

@@ -14,6 +14,7 @@ builds:
     tags:
       - with_gvisor
       - with_quic
+      - with_dhcp
       - with_wireguard
       - with_utls
       - with_reality_server
@@ -48,6 +49,7 @@ builds:
     tags:
       - with_gvisor
       - with_quic
+      - with_dhcp
       - with_wireguard
       - with_utls
       - with_clash_api

Dockerfile

@@ -9,7 +9,7 @@ RUN set -ex \
     && apk add git build-base \
     && export COMMIT=$(git rev-parse --short HEAD) \
     && export VERSION=$(go run ./cmd/internal/read_tag) \
-    && go build -v -trimpath -tags with_gvisor,with_quic,with_wireguard,with_utls,with_reality_server,with_clash_api,with_acme \
+    && go build -v -trimpath -tags with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_clash_api,with_acme \
         -o /go/bin/sing-box \
         -ldflags "-X \"github.com/sagernet/sing-box/constant.Version=$VERSION\" -s -w -buildid=" \
         ./cmd/sing-box

Makefile

@@ -1,6 +1,6 @@
 NAME = sing-box
 COMMIT = $(shell git rev-parse --short HEAD)
-TAGS ?= with_gvisor,with_quic,with_wireguard,with_utls,with_reality_server,with_clash_api
+TAGS ?= with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_reality_server,with_clash_api
 TAGS_TEST ?= with_gvisor,with_quic,with_wireguard,with_grpc,with_ech,with_utls,with_reality_server,with_shadowsocksr
 
 GOHOSTOS = $(shell go env GOHOSTOS)
@@ -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
@@ -48,14 +48,14 @@ proto_install:
 	go install -v google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
 
 snapshot:
-	go run ./cmd/internal/build goreleaser release --rm-dist --snapshot || exit 1
+	go run ./cmd/internal/build goreleaser release --clean --snapshot || exit 1
 	mkdir dist/release
 	mv dist/*.tar.gz dist/*.zip dist/*.deb dist/*.rpm dist/release
 	ghr --delete --draft --prerelease -p 1 nightly dist/release
 	rm -r dist
 
 release:
-	go run ./cmd/internal/build goreleaser release --rm-dist --skip-publish || exit 1
+	go run ./cmd/internal/build goreleaser release --clean --skip-publish || exit 1
 	mkdir dist/release
 	mv dist/*.tar.gz dist/*.zip dist/*.deb dist/*.rpm dist/release
 	ghr --delete --draft --prerelease -p 3 $(shell git describe --tags) dist/release
@@ -89,8 +89,8 @@ lib:
 
 lib_install:
 	go get -v -d
-	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
+	go install -v github.com/sagernet/gomobile/cmd/gomobile@v0.0.0-20230701084532-493ee2e45182
+	go install -v github.com/sagernet/gomobile/cmd/gobind@v0.0.0-20230701084532-493ee2e45182
 
 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

@@ -31,6 +31,7 @@ type Tracker interface {
 }
 
 type OutboundGroup interface {
+	Outbound
 	Now() string
 	All() []string
 }

adapter/fakeip.go

@@ -4,12 +4,13 @@ import (
 	"net/netip"
 
 	"github.com/sagernet/sing-dns"
+	"github.com/sagernet/sing/common/logger"
 )
 
 type FakeIPStore interface {
 	Service
 	Contains(address netip.Addr) bool
-	Create(domain string, strategy dns.DomainStrategy) (netip.Addr, error)
+	Create(domain string, isIPv6 bool) (netip.Addr, error)
 	Lookup(address netip.Addr) (string, bool)
 	Reset() error
 }
@@ -18,6 +19,13 @@ type FakeIPStorage interface {
 	FakeIPMetadata() *FakeIPMetadata
 	FakeIPSaveMetadata(metadata *FakeIPMetadata) error
 	FakeIPStore(address netip.Addr, domain string) error
+	FakeIPStoreAsync(address netip.Addr, domain string, logger logger.Logger)
 	FakeIPLoad(address netip.Addr) (string, bool)
+	FakeIPLoadDomain(domain string, isIPv6 bool) (netip.Addr, bool)
 	FakeIPReset() error
 }
+
+type FakeIPTransport interface {
+	dns.Transport
+	Store() FakeIPStore
+}

adapter/inbound.go

@@ -46,6 +46,7 @@ type InboundContext struct {
 	SourceGeoIPCode      string
 	GeoIPCode            string
 	ProcessInfo          *process.Info
+	FakeIP               bool
 
 	// dns cache
 

adapter/outbound.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"net"
 
-	"github.com/sagernet/sing-tun"
 	N "github.com/sagernet/sing/common/network"
 )
 
@@ -14,12 +13,8 @@ type Outbound interface {
 	Type() string
 	Tag() string
 	Network() []string
+	Dependencies() []string
 	N.Dialer
 	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/prestart.go

@@ -4,12 +4,6 @@ type PreStarter interface {
 	PreStart() error
 }
 
-func PreStart(starter any) error {
-	if preService, ok := starter.(PreStarter); ok {
-		err := preService.PreStart()
-		if err != nil {
-			return err
-		}
-	}
-	return nil
+type PostStarter interface {
+	PostStart() error
 }

adapter/router.go

@@ -25,9 +25,6 @@ type Router interface {
 
 	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)
@@ -37,6 +34,7 @@ type Router interface {
 	LookupDefault(ctx context.Context, domain string) ([]netip.Addr, error)
 
 	InterfaceFinder() control.InterfaceFinder
+	UpdateInterfaces() error
 	DefaultInterface() string
 	AutoDetectInterface() bool
 	AutoDetectInterfaceFunc() control.Func
@@ -44,9 +42,7 @@ type Router interface {
 	NetworkMonitor() tun.NetworkUpdateMonitor
 	InterfaceMonitor() tun.DefaultInterfaceMonitor
 	PackageManager() tun.PackageManager
-
 	Rules() []Rule
-	IPRules() []IPRule
 
 	TimeService
 
@@ -55,6 +51,8 @@ type Router interface {
 
 	V2RayServer() V2RayServer
 	SetV2RayServer(server V2RayServer)
+
+	ResetNetwork() error
 }
 
 type routerContextKey struct{}
@@ -86,11 +84,6 @@ type DNSRule interface {
 	RewriteTTL() *uint32
 }
 
-type IPRule interface {
-	Rule
-	Action() tun.ActionType
-}
-
 type InterfaceUpdateListener interface {
 	InterfaceUpdated() error
 }

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")
 		}
@@ -204,27 +211,18 @@ func (s *Box) Start() error {
 
 func (s *Box) preStart() error {
 	for serviceName, service := range s.preServices {
-		s.logger.Trace("pre-start ", serviceName)
-		err := adapter.PreStart(service)
-		if err != nil {
-			return E.Cause(err, "pre-starting ", serviceName)
-		}
-	}
-	for i, out := range s.outbounds {
-		var tag string
-		if out.Tag() == "" {
-			tag = F.ToString(i)
-		} else {
-			tag = out.Tag()
-		}
-		if starter, isStarter := out.(common.Starter); isStarter {
-			s.logger.Trace("initializing outbound/", out.Type(), "[", tag, "]")
-			err := starter.Start()
+		if preService, isPreService := service.(adapter.PreStarter); isPreService {
+			s.logger.Trace("pre-start ", serviceName)
+			err := preService.PreStart()
 			if err != nil {
-				return E.Cause(err, "initialize outbound/", out.Type(), "[", tag, "]")
+				return E.Cause(err, "pre-starting ", serviceName)
 			}
 		}
 	}
+	err := s.startOutbounds()
+	if err != nil {
+		return err
+	}
 	return s.router.Start()
 }
 
@@ -253,13 +251,26 @@ func (s *Box) start() error {
 			return E.Cause(err, "initialize inbound/", in.Type(), "[", tag, "]")
 		}
 	}
+	return nil
+}
+
+func (s *Box) postStart() error {
 	for serviceName, service := range s.postServices {
 		s.logger.Trace("starting ", service)
-		err = service.Start()
+		err := service.Start()
 		if err != nil {
 			return E.Cause(err, "start ", serviceName)
 		}
 	}
+	for serviceName, service := range s.outbounds {
+		if lateService, isLateService := service.(adapter.PostStarter); isLateService {
+			s.logger.Trace("post-starting ", service)
+			err := lateService.PostStart()
+			if err != nil {
+				return E.Cause(err, "post-start ", serviceName)
+			}
+		}
+	}
 	return nil
 }
 

box_outbound.go

@@ -0,0 +1,79 @@
+package box
+
+import (
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
+)
+
+func (s *Box) startOutbounds() error {
+	outboundTags := make(map[adapter.Outbound]string)
+	outbounds := make(map[string]adapter.Outbound)
+	for i, outboundToStart := range s.outbounds {
+		var outboundTag string
+		if outboundToStart.Tag() == "" {
+			outboundTag = F.ToString(i)
+		} else {
+			outboundTag = outboundToStart.Tag()
+		}
+		if _, exists := outbounds[outboundTag]; exists {
+			return E.New("outbound tag ", outboundTag, " duplicated")
+		}
+		outboundTags[outboundToStart] = outboundTag
+		outbounds[outboundTag] = outboundToStart
+	}
+	started := make(map[string]bool)
+	for {
+		canContinue := false
+	startOne:
+		for _, outboundToStart := range s.outbounds {
+			outboundTag := outboundTags[outboundToStart]
+			if started[outboundTag] {
+				continue
+			}
+			dependencies := outboundToStart.Dependencies()
+			for _, dependency := range dependencies {
+				if !started[dependency] {
+					continue startOne
+				}
+			}
+			started[outboundTag] = true
+			canContinue = true
+			if starter, isStarter := outboundToStart.(common.Starter); isStarter {
+				s.logger.Trace("initializing outbound/", outboundToStart.Type(), "[", outboundTag, "]")
+				err := starter.Start()
+				if err != nil {
+					return E.Cause(err, "initialize outbound/", outboundToStart.Type(), "[", outboundTag, "]")
+				}
+			}
+		}
+		if len(started) == len(s.outbounds) {
+			break
+		}
+		if canContinue {
+			continue
+		}
+		currentOutbound := common.Find(s.outbounds, func(it adapter.Outbound) bool {
+			return !started[outboundTags[it]]
+		})
+		var lintOutbound func(oTree []string, oCurrent adapter.Outbound) error
+		lintOutbound = func(oTree []string, oCurrent adapter.Outbound) error {
+			problemOutboundTag := common.Find(oCurrent.Dependencies(), func(it string) bool {
+				return !started[it]
+			})
+			if common.Contains(oTree, problemOutboundTag) {
+				return E.New("circular outbound dependency: ", strings.Join(oTree, " -> "), " -> ", problemOutboundTag)
+			}
+			problemOutbound := outbounds[problemOutboundTag]
+			if problemOutbound == nil {
+				return E.New("dependency[", problemOutbound, "] not found for outbound[", outboundTags[oCurrent], "]")
+			}
+			return lintOutbound(append(oTree, problemOutboundTag), problemOutbound)
+		}
+		return lintOutbound([]string{outboundTags[currentOutbound]}, currentOutbound)
+	}
+	return nil
+}

cmd/internal/build/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"go/build"
 	"os"
 	"os/exec"
 
@@ -11,6 +12,10 @@ import (
 func main() {
 	build_shared.FindSDK()
 
+	if os.Getenv("build.Default.GOPATH") == "" {
+		os.Setenv("GOPATH", build.Default.GOPATH)
+	}
+
 	command := exec.Command(os.Args[1], os.Args[2:]...)
 	command.Stdout = os.Stdout
 	command.Stderr = os.Stderr

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 +39,24 @@ func main() {
 var (
 	sharedFlags []string
 	debugFlags  []string
+	sharedTags  []string
+	iosTags     []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")
+	iosTags = append(iosTags, "with_dhcp", "with_low_memory", "with_conntrack")
+	debugTags = append(debugTags, "debug")
 }
 
 func buildAndroid() {
@@ -70,9 +77,9 @@ 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 +116,12 @@ func buildiOS() {
 		args = append(args, debugFlags...)
 	}
 
+	tags := append(sharedTags, iosTags...)
 	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")
 
@@ -125,7 +133,7 @@ func buildiOS() {
 		log.Fatal(err)
 	}
 
-	copyPath := filepath.Join("..", "sing-box-for-ios")
+	copyPath := filepath.Join("..", "sing-box-for-apple")
 	if rw.FileExists(copyPath) {
 		targetDir := filepath.Join(copyPath, "Libbox.xcframework")
 		targetDir, _ = filepath.Abs(targetDir)

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/baderror/baderror.go

@@ -55,7 +55,7 @@ func WrapQUIC(err error) error {
 	if err == nil {
 		return nil
 	}
-	if Contains(err, "canceled with error code 0") {
+	if Contains(err, "canceled by local with error code 0") {
 		return net.ErrClosed
 	}
 	return err

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/debugio/log.go

@@ -1,87 +0,0 @@
-package debugio
-
-import (
-	"net"
-
-	"github.com/sagernet/sing-box/log"
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	M "github.com/sagernet/sing/common/metadata"
-	N "github.com/sagernet/sing/common/network"
-)
-
-type LogConn struct {
-	N.ExtendedConn
-	logger log.Logger
-	prefix string
-}
-
-func NewLogConn(conn net.Conn, logger log.Logger, prefix string) N.ExtendedConn {
-	return &LogConn{bufio.NewExtendedConn(conn), logger, prefix}
-}
-
-func (c *LogConn) Read(p []byte) (n int, err error) {
-	n, err = c.ExtendedConn.Read(p)
-	if n > 0 {
-		c.logger.Debug(c.prefix, " read ", buf.EncodeHexString(p[:n]))
-	}
-	return
-}
-
-func (c *LogConn) Write(p []byte) (n int, err error) {
-	c.logger.Debug(c.prefix, " write ", buf.EncodeHexString(p))
-	return c.ExtendedConn.Write(p)
-}
-
-func (c *LogConn) ReadBuffer(buffer *buf.Buffer) error {
-	err := c.ExtendedConn.ReadBuffer(buffer)
-	if err == nil {
-		c.logger.Debug(c.prefix, " read buffer ", buf.EncodeHexString(buffer.Bytes()))
-	}
-	return err
-}
-
-func (c *LogConn) WriteBuffer(buffer *buf.Buffer) error {
-	c.logger.Debug(c.prefix, " write buffer ", buf.EncodeHexString(buffer.Bytes()))
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *LogConn) Upstream() any {
-	return c.ExtendedConn
-}
-
-type LogPacketConn struct {
-	N.NetPacketConn
-	logger log.Logger
-	prefix string
-}
-
-func NewLogPacketConn(conn net.PacketConn, logger log.Logger, prefix string) N.NetPacketConn {
-	return &LogPacketConn{bufio.NewPacketConn(conn), logger, prefix}
-}
-
-func (c *LogPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
-	n, addr, err = c.NetPacketConn.ReadFrom(p)
-	if n > 0 {
-		c.logger.Debug(c.prefix, " read from ", addr, " ", buf.EncodeHexString(p[:n]))
-	}
-	return
-}
-
-func (c *LogPacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
-	c.logger.Debug(c.prefix, " write to ", addr, " ", buf.EncodeHexString(p))
-	return c.NetPacketConn.WriteTo(p, addr)
-}
-
-func (c *LogPacketConn) ReadPacket(buffer *buf.Buffer) (destination M.Socksaddr, err error) {
-	destination, err = c.NetPacketConn.ReadPacket(buffer)
-	if err == nil {
-		c.logger.Debug(c.prefix, " read packet from ", destination, " ", buf.EncodeHexString(buffer.Bytes()))
-	}
-	return
-}
-
-func (c *LogPacketConn) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
-	c.logger.Debug(c.prefix, " write packet to ", destination, " ", buf.EncodeHexString(buffer.Bytes()))
-	return c.NetPacketConn.WritePacket(buffer, destination)
-}

common/debugio/print.go

@@ -1,19 +0,0 @@
-package debugio
-
-import (
-	"fmt"
-	"reflect"
-
-	"github.com/sagernet/sing/common"
-)
-
-func PrintUpstream(obj any) {
-	for obj != nil {
-		fmt.Println(reflect.TypeOf(obj))
-		if u, ok := obj.(common.WithUpstream); !ok {
-			break
-		} else {
-			obj = u.Upstream()
-		}
-	}
-}

common/debugio/race.go

@@ -1,48 +0,0 @@
-package debugio
-
-import (
-	"net"
-	"sync"
-
-	"github.com/sagernet/sing/common/buf"
-	"github.com/sagernet/sing/common/bufio"
-	N "github.com/sagernet/sing/common/network"
-)
-
-type RaceConn struct {
-	N.ExtendedConn
-	readAccess  sync.Mutex
-	writeAccess sync.Mutex
-}
-
-func NewRaceConn(conn net.Conn) N.ExtendedConn {
-	return &RaceConn{ExtendedConn: bufio.NewExtendedConn(conn)}
-}
-
-func (c *RaceConn) Read(p []byte) (n int, err error) {
-	c.readAccess.Lock()
-	defer c.readAccess.Unlock()
-	return c.ExtendedConn.Read(p)
-}
-
-func (c *RaceConn) Write(p []byte) (n int, err error) {
-	c.writeAccess.Lock()
-	defer c.writeAccess.Unlock()
-	return c.ExtendedConn.Write(p)
-}
-
-func (c *RaceConn) ReadBuffer(buffer *buf.Buffer) error {
-	c.readAccess.Lock()
-	defer c.readAccess.Unlock()
-	return c.ExtendedConn.ReadBuffer(buffer)
-}
-
-func (c *RaceConn) WriteBuffer(buffer *buf.Buffer) error {
-	c.writeAccess.Lock()
-	defer c.writeAccess.Unlock()
-	return c.ExtendedConn.WriteBuffer(buffer)
-}
-
-func (c *RaceConn) Upstream() any {
-	return c.ExtendedConn
-}

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"
 )
 
@@ -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/tfo.go

@@ -128,13 +128,6 @@ func (c *slowOpenConn) NeedHandshake() bool {
 	return c.conn == nil
 }
 
-func (c *slowOpenConn) ReadFrom(r io.Reader) (n int64, err error) {
-	if c.conn != nil {
-		return bufio.Copy(c.conn, r)
-	}
-	return bufio.ReadFrom0(c, r)
-}
-
 func (c *slowOpenConn) WriteTo(w io.Writer) (n int64, err error) {
 	if c.conn == nil {
 		select {

common/mux/client.go

@@ -1,524 +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"
-	"github.com/sagernet/sing/common/bufio/deadline"
-	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.NewBindPacketConn(deadline.NewPacketConn(bufio.NewNetPacketConn(&ClientPacketConn{ExtendedConn: bufio.NewExtendedConn(stream), destination: 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 deadline.NewPacketConn(&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
-	}
-	if destination.IsFqdn() {
-		addr = destination
-	} else {
-		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

@@ -1,258 +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"
-	"github.com/sagernet/sing/common/bufio/deadline"
-	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, deadline.NewPacketConn(bufio.NewNetPacketConn(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_linux_shared.go

@@ -15,7 +15,6 @@ import (
 	"unicode"
 	"unsafe"
 
-	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/buf"
 	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
@@ -82,9 +81,7 @@ func resolveSocketByNetlink(network string, source netip.AddrPort, destination n
 		return 0, 0, E.Cause(err, "write netlink request")
 	}
 
-	_buffer := buf.StackNew()
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
+	buffer := buf.New()
 	defer buffer.Release()
 
 	n, err := syscall.Read(socket, buffer.FreeBytes())

common/sniff/dns.go

@@ -26,9 +26,7 @@ func StreamDomainNameQuery(readCtx context.Context, reader io.Reader) (*adapter.
 	if length == 0 {
 		return nil, os.ErrInvalid
 	}
-	_buffer := buf.StackNewSize(int(length))
-	defer common.KeepAlive(_buffer)
-	buffer := common.Dup(_buffer)
+	buffer := buf.NewSize(int(length))
 	defer buffer.Release()
 
 	readCtx, cancel := context.WithTimeout(readCtx, time.Millisecond*100)

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/tls/acme.go

@@ -21,6 +21,7 @@ import (
 type acmeWrapper struct {
 	ctx    context.Context
 	cfg    *certmagic.Config
+	cache  *certmagic.Cache
 	domain []string
 }
 
@@ -29,7 +30,7 @@ func (w *acmeWrapper) Start() error {
 }
 
 func (w *acmeWrapper) Close() error {
-	w.cfg.Unmanage(w.domain)
+	w.cache.Stop()
 	return nil
 }
 
@@ -77,10 +78,11 @@ func startACME(ctx context.Context, options option.InboundACMEOptions) (*tls.Con
 		acmeConfig.ExternalAccount = (*acme.EAB)(options.ExternalAccount)
 	}
 	config.Issuers = []certmagic.Issuer{certmagic.NewACMEIssuer(config, acmeConfig)}
-	config = certmagic.New(certmagic.NewCache(certmagic.CacheOptions{
+	cache := certmagic.NewCache(certmagic.CacheOptions{
 		GetConfigForCert: func(certificate certmagic.Certificate) (*certmagic.Config, error) {
 			return config, nil
 		},
-	}), *config)
-	return config.TLSConfig(), &acmeWrapper{ctx, config, options.Domain}, nil
+	})
+	config = certmagic.New(cache, *config)
+	return config.TLSConfig(), &acmeWrapper{ctx: ctx, cfg: config, cache: cache, domain: options.Domain}, nil
 }

common/tls/reality_client.go

@@ -111,6 +111,16 @@ func (e *RealityClientConfig) ClientHandshake(ctx context.Context, conn net.Conn
 	if err != nil {
 		return nil, err
 	}
+
+	if len(uConfig.NextProtos) > 0 {
+		for _, extension := range uConn.Extensions {
+			if alpnExtension, isALPN := extension.(*utls.ALPNExtension); isALPN {
+				alpnExtension.AlpnProtocols = uConfig.NextProtos
+				break
+			}
+		}
+	}
+
 	hello := uConn.HandshakeState.Hello
 	hello.SessionId = make([]byte, 32)
 	copy(hello.Raw[39:], hello.SessionId)
@@ -125,7 +135,7 @@ 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/utls_client.go

@@ -3,6 +3,7 @@
 package tls
 
 import (
+	"context"
 	"crypto/tls"
 	"crypto/x509"
 	"math/rand"
@@ -47,7 +48,7 @@ func (e *UTLSClientConfig) Config() (*STDConfig, error) {
 }
 
 func (e *UTLSClientConfig) Client(conn net.Conn) (Conn, error) {
-	return &utlsConnWrapper{utls.UClient(conn, e.config.Clone(), e.id)}, nil
+	return &utlsALPNWrapper{utlsConnWrapper{utls.UClient(conn, e.config.Clone(), e.id)}, e.config.NextProtos}, nil
 }
 
 func (e *UTLSClientConfig) SetSessionIDGenerator(generator func(clientHello []byte, sessionID []byte) error) {
@@ -87,6 +88,31 @@ func (c *utlsConnWrapper) Upstream() any {
 	return c.UConn
 }
 
+type utlsALPNWrapper struct {
+	utlsConnWrapper
+	nextProtocols []string
+}
+
+func (c *utlsALPNWrapper) HandshakeContext(ctx context.Context) error {
+	if len(c.nextProtocols) > 0 {
+		err := c.BuildHandshakeState()
+		if err != nil {
+			return err
+		}
+		for _, extension := range c.Extensions {
+			if alpnExtension, isALPN := extension.(*utls.ALPNExtension); isALPN {
+				alpnExtension.AlpnProtocols = c.nextProtocols
+				err = c.BuildHandshakeState()
+				if err != nil {
+					return err
+				}
+				break
+			}
+		}
+	}
+	return c.UConn.HandshakeContext(ctx)
+}
+
 func NewUTLSClient(router adapter.Router, serverAddress string, options option.OutboundTLSOptions) (*UTLSClientConfig, error) {
 	var serverName string
 	if options.ServerName != "" {

common/urltest/urltest.go

@@ -10,6 +10,7 @@ import (
 
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/common/x/list"
 )
 
 type History struct {
@@ -20,6 +21,7 @@ type History struct {
 type HistoryStorage struct {
 	access       sync.RWMutex
 	delayHistory map[string]*History
+	callbacks    list.List[func()]
 }
 
 func NewHistoryStorage() *HistoryStorage {
@@ -28,6 +30,18 @@ func NewHistoryStorage() *HistoryStorage {
 	}
 }
 
+func (s *HistoryStorage) AddListener(listener func()) *list.Element[func()] {
+	s.access.Lock()
+	defer s.access.Unlock()
+	return s.callbacks.PushBack(listener)
+}
+
+func (s *HistoryStorage) RemoveListener(element *list.Element[func()]) {
+	s.access.Lock()
+	defer s.access.Unlock()
+	s.callbacks.Remove(element)
+}
+
 func (s *HistoryStorage) LoadURLTestHistory(tag string) *History {
 	if s == nil {
 		return nil
@@ -39,14 +53,24 @@ func (s *HistoryStorage) LoadURLTestHistory(tag string) *History {
 
 func (s *HistoryStorage) DeleteURLTestHistory(tag string) {
 	s.access.Lock()
-	defer s.access.Unlock()
 	delete(s.delayHistory, tag)
+	s.access.Unlock()
+	s.notifyUpdated()
 }
 
 func (s *HistoryStorage) StoreURLTestHistory(tag string, history *History) {
 	s.access.Lock()
-	defer s.access.Unlock()
 	s.delayHistory[tag] = history
+	s.access.Unlock()
+	s.notifyUpdated()
+}
+
+func (s *HistoryStorage) notifyUpdated() {
+	s.access.RLock()
+	defer s.access.RUnlock()
+	for element := s.callbacks.Front(); element != nil; element = element.Next() {
+		element.Value()
+	}
 }
 
 func URLTest(ctx context.Context, link string, detour N.Dialer) (t uint16, err error) {

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

@@ -3,40 +3,13 @@ package constant
 import (
 	"os"
 	"path/filepath"
-	"strings"
 
 	"github.com/sagernet/sing/common/rw"
 )
 
 const dirName = "sing-box"
 
-var (
-	basePath      string
-	tempPath      string
-	resourcePaths []string
-)
-
-func BasePath(name string) string {
-	if basePath == "" || strings.HasPrefix(name, "/") {
-		return name
-	}
-	return filepath.Join(basePath, name)
-}
-
-func CreateTemp(pattern string) (*os.File, error) {
-	if tempPath == "" {
-		tempPath = os.TempDir()
-	}
-	return os.CreateTemp(tempPath, pattern)
-}
-
-func SetBasePath(path string) {
-	basePath = path
-}
-
-func SetTempPath(path string) {
-	tempPath = 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 +1,154 @@
+#### 1.3.3
+
+* Fixes and improvements
+
+#### 1.3.1-rc.1
+
+* Fix bugs and update dependencies
+
+#### 1.3.1-beta.3
+
+* Introducing our [new iOS](/installation/clients/sfi) and [macOS](/installation/clients/sfm) client applications **1**
+* Fixes and improvements
+
+**1**:
+
+The old testflight link and app are no longer valid.
+
+#### 1.3.1-beta.2
+
+* Fix bugs and update dependencies
+
+#### 1.3.1-beta.1
+
+* Fixes and improvements
+
+#### 1.3.0
+
+* Fix bugs and update dependencies
+
+Important changes since 1.2:
+
+* Add [FakeIP](/configuration/dns/fakeip) support **1**
+* Improve multiplex **2**
+* Add [DNS reverse mapping](/configuration/dns#reverse_mapping) support
+* Add `rewrite_ttl` DNS rule action
+* Add `store_fakeip` Clash API option
+* Add multi-peer support for [WireGuard](/configuration/outbound/wireguard#peers) outbound
+* Add loopback detect
+* 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
+* Perform URLTest recheck after network changes
+* Fix `system` tun stack for ios
+* Fix network monitor for android/ios
+* Update VLESS and XUDP protocol
+* Make splice work with traffic statistics systems like Clash API
+* Significantly reduces memory usage of idle connections
+* Improve DNS caching
+* Add `independent_cache` [option](/configuration/dns#independent_cache) for DNS
+* Reimplemented shadowsocks client
+* Add multiplex support for VLESS outbound
+* Automatically add Windows firewall rules in order for the system tun stack to work
+* Fix TLS 1.2 support for shadow-tls client
+* Add `cache_id` [option](/configuration/experimental#cache_id) for Clash cache file
+* Fix `local` DNS transport for Android
+
+*1*:
+
+See [FAQ](/faq/fakeip) for more information.
+
+*2*:
+
+Added new `h2mux` multiplex protocol and `padding` multiplex option, see [Multiplex](/configuration/shared/multiplex).
+
+#### 1.3-rc2
+
+* Fix `local` DNS transport for Android
+* Fix bugs and update dependencies
+
+#### 1.3-rc1
+
+* Fix bugs and update dependencies
+
+#### 1.3-beta14
+
+* Fixes and improvements
+
+#### 1.3-beta13
+
+* Fix resolving fakeip domains  **1**
+* Deprecate L3 routing
+* Fix bugs and update dependencies
+
+**1**:
+
+If the destination address of the connection is obtained from fakeip, dns rules with server type fakeip will be skipped.
+
+#### 1.3-beta12
+
+* Automatically add Windows firewall rules in order for the system tun stack to work
+* Fix TLS 1.2 support for shadow-tls client
+* Add `cache_id` [option](/configuration/experimental#cache_id) for Clash cache file
+* Fixes and improvements
+
+#### 1.3-beta11
+
+* Fix bugs and update dependencies
+
+#### 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

docs/configuration/dns/index.md

@@ -11,6 +11,7 @@
     "strategy": "",
     "disable_cache": false,
     "disable_expire": false,
+    "independent_cache": false,
     "reverse_mapping": false,
     "fakeip": {}
   }
@@ -48,6 +49,10 @@ Disable dns cache.
 
 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.

docs/configuration/dns/index.zh.md

@@ -11,6 +11,7 @@
     "strategy": "",
     "disable_cache": false,
     "disable_expire": false,
+    "independent_cache": false,
     "reverse_mapping": false,
     "fakeip": {}
   }
@@ -47,6 +48,10 @@
 
 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。

docs/configuration/dns/server.md

@@ -30,18 +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` |
-|  [FakeIP](./fakeip) | `fakeip`                      |
+| 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 ""
 
@@ -94,4 +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

@@ -30,18 +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` |
-| [FakeIP](./fakeip) | `fakeip`                     |
+| 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

@@ -7,13 +7,14 @@
   "experimental": {
     "clash_api": {
       "external_controller": "127.0.0.1:9090",
-      "external_ui": "folder",
+      "external_ui": "",
       "external_ui_download_url": "",
       "external_ui_download_detour": "",
       "secret": "",
-      "default_mode": "rule",
+      "default_mode": "",
       "store_selected": false,
-      "cache_file": "cache.db"
+      "cache_file": "",
+      "cache_id": ""
     },
     "v2ray_api": {
       "listen": "127.0.0.1:8080",
@@ -91,6 +92,12 @@ Store selected outbound for the `Selector` outbound in cache file.
 
 Cache file path, `cache.db` will be used if empty.
 
+#### cache_id
+
+Cache ID.
+
+If not empty, `store_selected` will use a separate store keyed by it.
+
 ### V2Ray API Fields
 
 !!! error ""

docs/configuration/experimental/index.zh.md

@@ -7,13 +7,14 @@
   "experimental": {
     "clash_api": {
       "external_controller": "127.0.0.1:9090",
-      "external_ui": "folder",
+      "external_ui": "",
       "external_ui_download_url": "",
       "external_ui_download_detour": "",
       "secret": "",
-      "default_mode": "rule",
+      "default_mode": "",
       "store_selected": false,
-      "cache_file": "cache.db"
+      "cache_file": "",
+      "cache_id": ""
     },
     "v2ray_api": {
       "listen": "127.0.0.1:8080",
@@ -89,6 +90,12 @@ Clash 中的默认模式，默认使用 `rule`。
 
 缓存文件路径，默认使用`cache.db`。
 
+#### cache_id
+
+缓存 ID。
+
+如果不为空，`store_selected` 将会使用以此为键的独立存储。
+
 ### V2Ray API 字段
 
 !!! error ""

docs/configuration/route/index.md

@@ -7,7 +7,6 @@
   "route": {
     "geoip": {},
     "geosite": {},
-    "ip_rules": [],
     "rules": [],
     "final": "",
     "auto_detect_interface": false,
@@ -24,7 +23,6 @@
 |------------|------------------------------------|
 | `geoip`    | [GeoIP](./geoip)                   |
 | `geosite`  | [Geosite](./geosite)               |
-| `ip_rules` | List of [IP Route Rule](./ip-rule) |
 | `rules`    | List of [Route Rule](./rule)       |
 
 #### final

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/fakeip.md

@@ -0,0 +1,106 @@
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "tag": "google",
+        "address": "tls://8.8.8.8"
+      },
+      {
+        "tag": "local",
+        "address": "223.5.5.5",
+        "detour": "direct"
+      },
+      {
+        "tag": "remote",
+        "address": "fakeip"
+      },
+      {
+        "tag": "block",
+        "address": "rcode://success"
+      }
+    ],
+    "rules": [
+      {
+        "geosite": "category-ads-all",
+        "server": "block",
+        "disable_cache": true
+      },
+      {
+        "outbound": "any",
+        "server": "local"
+      },
+      {
+        "geosite": "cn",
+        "server": "local"
+      },
+      {
+        "query_type": [
+          "A",
+          "AAAA"
+        ],
+        "server": "remote"
+      }
+    ],
+    "fakeip": {
+      "enabled": true,
+      "inet4_range": "198.18.0.0/15",
+      "inet6_range": "fc00::/18"
+    },
+    "independent_cache": true,
+    "strategy": "ipv4_only"
+  },
+  "inbounds": [
+    {
+      "type": "tun",
+      "inet4_address": "172.19.0.1/30",
+      "auto_route": true,
+      "sniff": true,
+      "domain_strategy": "ipv4_only" // remove this line if you want to resolve the domain remotely (if the server is not sing-box, UDP may not work due to wrong behavior).
+    }
+  ],
+  "outbounds": [
+    {
+      "type": "shadowsocks",
+      "tag": "proxy",
+      "server": "mydomain.com",
+      "server_port": 8080,
+      "method": "2022-blake3-aes-128-gcm",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    },
+    {
+      "type": "direct",
+      "tag": "direct"
+    },
+    {
+      "type": "block",
+      "tag": "block"
+    },
+    {
+      "type": "dns",
+      "tag": "dns-out"
+    }
+  ],
+  "route": {
+    "rules": [
+      {
+        "protocol": "dns",
+        "outbound": "dns-out"
+      },
+      {
+        "geosite": "cn",
+        "geoip": [
+          "private",
+          "cn"
+        ],
+        "outbound": "direct"
+      },
+      {
+        "geosite": "category-ads-all",
+        "outbound": "block"
+      }
+    ],
+    "auto_detect_interface": true
+  }
+}
+```

docs/examples/fakeip.zh.md

@@ -0,0 +1,106 @@
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "tag": "google",
+        "address": "tls://8.8.8.8"
+      },
+      {
+        "tag": "local",
+        "address": "223.5.5.5",
+        "detour": "direct"
+      },
+      {
+        "tag": "remote",
+        "address": "fakeip"
+      },
+      {
+        "tag": "block",
+        "address": "rcode://success"
+      }
+    ],
+    "rules": [
+      {
+        "geosite": "category-ads-all",
+        "server": "block",
+        "disable_cache": true
+      },
+      {
+        "outbound": "any",
+        "server": "local"
+      },
+      {
+        "geosite": "cn",
+        "server": "local"
+      },
+      {
+        "query_type": [
+          "A",
+          "AAAA"
+        ],
+        "server": "remote"
+      }
+    ],
+    "fakeip": {
+      "enabled": true,
+      "inet4_range": "198.18.0.0/15",
+      "inet6_range": "fc00::/18"
+    },
+    "independent_cache": true,
+    "strategy": "ipv4_only"
+  },
+  "inbounds": [
+    {
+      "type": "tun",
+      "inet4_address": "172.19.0.1/30",
+      "auto_route": true,
+      "sniff": true,
+      "domain_strategy": "ipv4_only" // 如果您想在远程解析域，删除此行 (如果服务器程序不为 sing-box，可能由于错误的行为导致 UDP 无法使用)。
+    }
+  ],
+  "outbounds": [
+    {
+      "type": "shadowsocks",
+      "tag": "proxy",
+      "server": "mydomain.com",
+      "server_port": 8080,
+      "method": "2022-blake3-aes-128-gcm",
+      "password": "8JCsPssfgS8tiRwiMlhARg=="
+    },
+    {
+      "type": "direct",
+      "tag": "direct"
+    },
+    {
+      "type": "block",
+      "tag": "block"
+    },
+    {
+      "type": "dns",
+      "tag": "dns-out"
+    }
+  ],
+  "route": {
+    "rules": [
+      {
+        "protocol": "dns",
+        "outbound": "dns-out"
+      },
+      {
+        "geosite": "cn",
+        "geoip": [
+          "private",
+          "cn"
+        ],
+        "outbound": "direct"
+      },
+      {
+        "geosite": "category-ads-all",
+        "outbound": "block"
+      }
+    ],
+    "auto_detect_interface": true
+  }
+}
+```

docs/examples/index.md

@@ -9,3 +9,4 @@ Configuration examples for sing-box.
 * [ShadowTLS](./shadowtls)
 * [Clash API](./clash-api)
 * [WireGuard Direct](./wireguard-direct)
+* [FakeIP](./fakeip)

docs/examples/index.zh.md

@@ -9,3 +9,4 @@ sing-box 的配置示例。
 * [ShadowTLS](./shadowtls)
 * [Clash API](./clash-api)
 * [WireGuard Direct](./wireguard-direct)
+* [FakeIP](./fakeip)

docs/faq/fakeip.md

@@ -5,8 +5,7 @@ responds to DNS requests with virtual results and restores mapping when acceptin
 
 #### 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
 
@@ -15,6 +14,6 @@ responds to DNS requests with virtual results and restores mapping when acceptin
 
 #### Recommendation
 
-* Do not use if you do not need L3 routing.
+* Enable `dns.independent_cache` unless you always resolve FakeIP domains remotely.
 * 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

@@ -4,8 +4,7 @@ FakeIP 是指同时劫持 DNS 和连接请求的程序中的一种行为。它
 
 #### 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
 
@@ -14,6 +13,6 @@ FakeIP 是指同时劫持 DNS 和连接请求的程序中的一种行为。它
 
 #### 建议
 
-* 如果不需要 L3 路由，请勿使用。
+* 启用 `dns.independent_cache` 除非您始终远程解析 FakeIP 域。
 * 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/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

@@ -9,12 +9,12 @@ Experimental iOS client for sing-box.
 
 #### Download
 
-* [TestFlight](https://testflight.apple.com/join/c6ylui2j)
+* [TestFlight](https://testflight.apple.com/join/AcqO44FH)
 
 #### 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

@@ -9,12 +9,12 @@
 
 #### 下载
 
-* [TestFlight](https://testflight.apple.com/join/c6ylui2j)
+* [TestFlight](https://testflight.apple.com/join/AcqO44FH)
 
 #### 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
 

docs/installation/clients/sfm.md

@@ -0,0 +1,21 @@
+# SFM
+
+Experimental macOS client for sing-box.
+
+#### Requirements
+
+* macOS 13.0+
+
+#### Download
+
+* [TestFlight](https://testflight.apple.com/join/AcqO44FH)
+
+#### Note
+
+* User Agent in remote profile request is `SFM/$version ($version_code; sing-box $sing_box_version)`
+* Crash logs is located in `Settings` -> `View Service Log`
+
+#### Privacy policy
+
+* SFI did not collect or share personal data.
+* The data generated by the software is always on your device.

docs/installation/clients/sfm.zh.md

@@ -0,0 +1,21 @@
+# SFM
+
+实验性的 macOS sing-box 客户端。
+
+#### 要求
+
+* macOS 13.0+
+
+#### 下载
+
+* [TestFlight](https://testflight.apple.com/join/AcqO44FH)
+
+#### 注意事项
+
+* 远程配置文件请求中的 User Agent 为 `SFM/$version ($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
+
+* SFM 不收集或共享个人数据。
+* 软件生成的数据始终在您的设备上。

docs/support.md

@@ -1,8 +1,4 @@
-#### Github
-
-Issue: [Issues · SagerNet/sing-box](https://github.com/SagerNet/sing-box/issues)
-
-#### Telegram
-
-Notification channel: [@yapnc](https://t.me/yapnc)  
-User group: [@yapug](https://t.me/yapug)
+Github Issue: [Issues · SagerNet/sing-box](https://github.com/SagerNet/sing-box/issues)  
+Telegram Notification channel: [@yapnc](https://t.me/yapnc)  
+Telegram User group: [@yapug](https://t.me/yapug)  
+Email: [contact@sagernet.org](mailto:contact@sagernet.org)

docs/support.zh.md

@@ -1,8 +1,4 @@
-#### Github
-
-工单: [Issues · SagerNet/sing-box](https://github.com/SagerNet/sing-box/issues)
-
-#### Telegram
-
-通知频道: [@yapnc](https://t.me/yapnc)  
-用户组: [@yapug](https://t.me/yapug)
+Github 工单: [Issues · SagerNet/sing-box](https://github.com/SagerNet/sing-box/issues)  
+Telegram 通知频道: [@yapnc](https://t.me/yapnc)  
+Telegram 用户组: [@yapug](https://t.me/yapug)  
+Email: [contact@sagernet.org](mailto:contact@sagernet.org)

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/cachefile/cache.go

@@ -1,7 +1,10 @@
 package cachefile
 
 import (
+	"net/netip"
 	"os"
+	"strings"
+	"sync"
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -14,10 +17,15 @@ var bucketSelected = []byte("selected")
 var _ adapter.ClashCacheFile = (*CacheFile)(nil)
 
 type CacheFile struct {
-	DB *bbolt.DB
+	DB           *bbolt.DB
+	cacheID      []byte
+	saveAccess   sync.RWMutex
+	saveDomain   map[netip.Addr]string
+	saveAddress4 map[string]netip.Addr
+	saveAddress6 map[string]netip.Addr
 }
 
-func Open(path string) (*CacheFile, error) {
+func Open(path string, cacheID string) (*CacheFile, error) {
 	const fileMode = 0o666
 	options := bbolt.Options{Timeout: time.Second}
 	db, err := bbolt.Open(path, fileMode, &options)
@@ -31,13 +39,73 @@ func Open(path string) (*CacheFile, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &CacheFile{db}, nil
+	var cacheIDBytes []byte
+	if cacheID != "" {
+		cacheIDBytes = append([]byte{0}, []byte(cacheID)...)
+	}
+	err = db.Batch(func(tx *bbolt.Tx) error {
+		return tx.ForEach(func(name []byte, b *bbolt.Bucket) error {
+			if name[0] == 0 {
+				return b.ForEachBucket(func(k []byte) error {
+					bucketName := string(k)
+					if !(bucketName == string(bucketSelected)) {
+						delErr := b.DeleteBucket(name)
+						if delErr != nil {
+							return delErr
+						}
+					}
+					return nil
+				})
+			} else {
+				bucketName := string(name)
+				if !(bucketName == string(bucketSelected) || strings.HasPrefix(bucketName, fakeipBucketPrefix)) {
+					delErr := tx.DeleteBucket(name)
+					if delErr != nil {
+						return delErr
+					}
+				}
+			}
+			return nil
+		})
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &CacheFile{
+		DB:           db,
+		cacheID:      cacheIDBytes,
+		saveDomain:   make(map[netip.Addr]string),
+		saveAddress4: make(map[string]netip.Addr),
+		saveAddress6: make(map[string]netip.Addr),
+	}, nil
+}
+
+func (c *CacheFile) bucket(t *bbolt.Tx, key []byte) *bbolt.Bucket {
+	if c.cacheID == nil {
+		return t.Bucket(key)
+	}
+	bucket := t.Bucket(c.cacheID)
+	if bucket == nil {
+		return nil
+	}
+	return bucket.Bucket(key)
+}
+
+func (c *CacheFile) createBucket(t *bbolt.Tx, key []byte) (*bbolt.Bucket, error) {
+	if c.cacheID == nil {
+		return t.CreateBucketIfNotExists(key)
+	}
+	bucket, err := t.CreateBucketIfNotExists(c.cacheID)
+	if bucket == nil {
+		return nil, err
+	}
+	return bucket.CreateBucketIfNotExists(key)
 }
 
 func (c *CacheFile) LoadSelected(group string) string {
 	var selected string
 	c.DB.View(func(t *bbolt.Tx) error {
-		bucket := t.Bucket(bucketSelected)
+		bucket := c.bucket(t, bucketSelected)
 		if bucket == nil {
 			return nil
 		}
@@ -52,7 +120,7 @@ func (c *CacheFile) LoadSelected(group string) string {
 
 func (c *CacheFile) StoreSelected(group, selected string) error {
 	return c.DB.Batch(func(t *bbolt.Tx) error {
-		bucket, err := t.CreateBucketIfNotExists(bucketSelected)
+		bucket, err := c.createBucket(t, bucketSelected)
 		if err != nil {
 			return err
 		}

experimental/clashapi/cachefile/fakeip.go

@@ -5,18 +5,24 @@ import (
 	"os"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
 
 	"go.etcd.io/bbolt"
 )
 
+const fakeipBucketPrefix = "fakeip_"
+
 var (
-	bucketFakeIP = []byte("fakeip")
-	keyMetadata  = []byte("metadata")
+	bucketFakeIP        = []byte(fakeipBucketPrefix + "address")
+	bucketFakeIPDomain4 = []byte(fakeipBucketPrefix + "domain4")
+	bucketFakeIPDomain6 = []byte(fakeipBucketPrefix + "domain6")
+	keyMetadata         = []byte(fakeipBucketPrefix + "metadata")
 )
 
 func (c *CacheFile) FakeIPMetadata() *adapter.FakeIPMetadata {
 	var metadata adapter.FakeIPMetadata
-	err := c.DB.View(func(tx *bbolt.Tx) error {
+	err := c.DB.Batch(func(tx *bbolt.Tx) error {
 		bucket := tx.Bucket(bucketFakeIP)
 		if bucket == nil {
 			return nil
@@ -25,6 +31,10 @@ func (c *CacheFile) FakeIPMetadata() *adapter.FakeIPMetadata {
 		if len(metadataBinary) == 0 {
 			return os.ErrInvalid
 		}
+		err := bucket.Delete(keyMetadata)
+		if err != nil {
+			return err
+		}
 		return metadata.UnmarshalBinary(metadataBinary)
 	})
 	if err != nil {
@@ -53,11 +63,54 @@ func (c *CacheFile) FakeIPStore(address netip.Addr, domain string) error {
 		if err != nil {
 			return err
 		}
-		return bucket.Put(address.AsSlice(), []byte(domain))
+		err = bucket.Put(address.AsSlice(), []byte(domain))
+		if err != nil {
+			return err
+		}
+		if address.Is4() {
+			bucket, err = tx.CreateBucketIfNotExists(bucketFakeIPDomain4)
+		} else {
+			bucket, err = tx.CreateBucketIfNotExists(bucketFakeIPDomain6)
+		}
+		if err != nil {
+			return err
+		}
+		return bucket.Put([]byte(domain), address.AsSlice())
 	})
 }
 
+func (c *CacheFile) FakeIPStoreAsync(address netip.Addr, domain string, logger logger.Logger) {
+	c.saveAccess.Lock()
+	c.saveDomain[address] = domain
+	if address.Is4() {
+		c.saveAddress4[domain] = address
+	} else {
+		c.saveAddress6[domain] = address
+	}
+	c.saveAccess.Unlock()
+	go func() {
+		err := c.FakeIPStore(address, domain)
+		if err != nil {
+			logger.Warn("save FakeIP address pair: ", err)
+		}
+		c.saveAccess.Lock()
+		delete(c.saveDomain, address)
+		if address.Is4() {
+			delete(c.saveAddress4, domain)
+		} else {
+			delete(c.saveAddress6, domain)
+		}
+		c.saveAccess.Unlock()
+	}()
+}
+
 func (c *CacheFile) FakeIPLoad(address netip.Addr) (string, bool) {
+	c.saveAccess.RLock()
+	cachedDomain, cached := c.saveDomain[address]
+	c.saveAccess.RUnlock()
+	if cached {
+		return cachedDomain, true
+	}
 	var domain string
 	_ = c.DB.View(func(tx *bbolt.Tx) error {
 		bucket := tx.Bucket(bucketFakeIP)
@@ -70,8 +123,48 @@ func (c *CacheFile) FakeIPLoad(address netip.Addr) (string, bool) {
 	return domain, domain != ""
 }
 
+func (c *CacheFile) FakeIPLoadDomain(domain string, isIPv6 bool) (netip.Addr, bool) {
+	var (
+		cachedAddress netip.Addr
+		cached        bool
+	)
+	c.saveAccess.RLock()
+	if !isIPv6 {
+		cachedAddress, cached = c.saveAddress4[domain]
+	} else {
+		cachedAddress, cached = c.saveAddress6[domain]
+	}
+	c.saveAccess.RUnlock()
+	if cached {
+		return cachedAddress, true
+	}
+	var address netip.Addr
+	_ = c.DB.View(func(tx *bbolt.Tx) error {
+		var bucket *bbolt.Bucket
+		if isIPv6 {
+			bucket = tx.Bucket(bucketFakeIPDomain6)
+		} else {
+			bucket = tx.Bucket(bucketFakeIPDomain4)
+		}
+		if bucket == nil {
+			return nil
+		}
+		address = M.AddrFromIP(bucket.Get([]byte(domain)))
+		return nil
+	})
+	return address, address.IsValid()
+}
+
 func (c *CacheFile) FakeIPReset() error {
 	return c.DB.Batch(func(tx *bbolt.Tx) error {
-		return tx.DeleteBucket(bucketFakeIP)
+		err := tx.DeleteBucket(bucketFakeIP)
+		if err != nil {
+			return err
+		}
+		err = tx.DeleteBucket(bucketFakeIPDomain4)
+		if err != nil {
+			return err
+		}
+		return tx.DeleteBucket(bucketFakeIPDomain6)
 	})
 }

experimental/clashapi/compatible/map.go

@@ -7,6 +7,15 @@ type Map[K comparable, V any] struct {
 	m sync.Map
 }
 
+func (m *Map[K, V]) Len() int {
+	var count int
+	m.m.Range(func(key, value any) bool {
+		count++
+		return true
+	})
+	return count
+}
+
 func (m *Map[K, V]) Load(key K) (V, bool) {
 	v, ok := m.m.Load(key)
 	if !ok {

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

@@ -134,7 +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
 		})
 

experimental/clashapi/server.go

@@ -23,6 +23,8 @@ 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"
+	"github.com/sagernet/sing/service/filemanager"
 	"github.com/sagernet/websocket"
 
 	"github.com/go-chi/chi/v5"
@@ -37,6 +39,7 @@ func init() {
 var _ adapter.ClashServer = (*Server)(nil)
 
 type Server struct {
+	ctx            context.Context
 	router         adapter.Router
 	logger         log.Logger
 	httpServer     *http.Server
@@ -46,6 +49,7 @@ type Server struct {
 	storeSelected  bool
 	storeFakeIP    bool
 	cacheFilePath  string
+	cacheID        string
 	cacheFile      adapter.ClashCacheFile
 
 	externalUI               string
@@ -53,10 +57,11 @@ type Server struct {
 	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{
@@ -64,13 +69,16 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 			Handler: chiRouter,
 		},
 		trafficManager:           trafficManager,
-		urlTestHistory:           urltest.NewHistoryStorage(),
 		mode:                     strings.ToLower(options.DefaultMode),
 		storeSelected:            options.StoreSelected,
 		storeFakeIP:              options.StoreFakeIP,
 		externalUIDownloadURL:    options.ExternalUIDownloadURL,
 		externalUIDownloadDetour: options.ExternalUIDownloadDetour,
 	}
+	server.urlTestHistory = service.PtrFromContext[urltest.HistoryStorage](ctx)
+	if server.urlTestHistory == nil {
+		server.urlTestHistory = urltest.NewHistoryStorage()
+	}
 	if server.mode == "" {
 		server.mode = "rule"
 	}
@@ -82,9 +90,10 @@ 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
+		server.cacheID = options.CacheID
 	}
 	cors := cors.New(cors.Options{
 		AllowedOrigins: []string{"*"},
@@ -102,7 +111,7 @@ 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())
@@ -113,7 +122,7 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 		server.setupMetaAPI(r)
 	})
 	if options.ExternalUI != "" {
-		server.externalUI = C.BasePath(os.ExpandEnv(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(server.externalUI)))
 			r.Get("/ui", http.RedirectHandler("/ui/", http.StatusTemporaryRedirect).ServeHTTP)
@@ -127,7 +136,7 @@ func NewServer(router adapter.Router, logFactory log.ObservableFactory, options
 
 func (s *Server) PreStart() error {
 	if s.cacheFilePath != "" {
-		cacheFile, err := cachefile.Open(s.cacheFilePath)
+		cacheFile, err := cachefile.Open(s.cacheFilePath, s.cacheID)
 		if err != nil {
 			return E.Cause(err, "open cache file")
 		}
@@ -180,6 +189,10 @@ func (s *Server) HistoryStorage() *urltest.HistoryStorage {
 	return s.urlTestHistory
 }
 
+func (s *Server) TrafficManager() *trafficontrol.Manager {
+	return s.trafficManager
+}
+
 func (s *Server) RoutedConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, matchedRule adapter.Rule) (net.Conn, adapter.Tracker) {
 	tracker := trafficontrol.NewTCPTracker(conn, s.trafficManager, castMetadata(metadata), s.router, matchedRule)
 	return tracker, tracker

experimental/clashapi/server_resources.go

@@ -12,11 +12,11 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	C "github.com/sagernet/sing-box/constant"
 	"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() {
@@ -79,7 +79,7 @@ func (s *Server) downloadExternalUI() error {
 }
 
 func (s *Server) downloadZIP(name string, body io.Reader, output string) error {
-	tempFile, err := C.CreateTemp(name)
+	tempFile, err := filemanager.CreateTemp(s.ctx, name)
 	if err != nil {
 		return err
 	}
@@ -112,7 +112,7 @@ func (s *Server) downloadZIP(name string, body io.Reader, output string) error {
 			return err
 		}
 		savePath := filepath.Join(saveDirectory, pathElements[len(pathElements)-1])
-		err = downloadZIPEntry(file, savePath)
+		err = downloadZIPEntry(s.ctx, file, savePath)
 		if err != nil {
 			return err
 		}
@@ -120,8 +120,8 @@ func (s *Server) downloadZIP(name string, body io.Reader, output string) error {
 	return nil
 }
 
-func downloadZIPEntry(zipFile *zip.File, savePath string) error {
-	saveFile, err := os.Create(savePath)
+func downloadZIPEntry(ctx context.Context, zipFile *zip.File, savePath string) error {
+	saveFile, err := filemanager.Create(ctx, savePath)
 	if err != nil {
 		return err
 	}

experimental/clashapi/trafficontrol/manager.go

@@ -55,6 +55,14 @@ func (m *Manager) Now() (up int64, down int64) {
 	return m.uploadBlip.Load(), m.downloadBlip.Load()
 }
 
+func (m *Manager) Total() (up int64, down int64) {
+	return m.uploadTotal.Load(), m.downloadTotal.Load()
+}
+
+func (m *Manager) Connections() int {
+	return m.connections.Len()
+}
+
 func (m *Manager) Snapshot() *Snapshot {
 	var connections []tracker
 	m.connections.Range(func(_ string, value tracker) bool {

experimental/clashapi/trafficontrol/tracker.go

@@ -7,9 +7,9 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/experimental/trackerconn"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/atomic"
+	"github.com/sagernet/sing/common/bufio"
 	N "github.com/sagernet/sing/common/network"
 
 	"github.com/gofrs/uuid/v5"
@@ -115,13 +115,13 @@ func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router ad
 	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,
@@ -202,13 +202,13 @@ func NewUDPTracker(conn N.PacketConn, manager *Manager, metadata Metadata, route
 	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.go

@@ -3,7 +3,9 @@ package libbox
 const (
 	CommandLog int32 = iota
 	CommandStatus
-	CommandServiceStop
 	CommandServiceReload
 	CommandCloseConnections
+	CommandGroup
+	CommandSelectOutbound
+	CommandURLTest
 )

experimental/libbox/command_client.go

@@ -26,6 +26,13 @@ type CommandClientHandler interface {
 	Disconnected(message string)
 	WriteLog(message string)
 	WriteStatus(message *StatusMessage)
+	WriteGroups(message OutboundGroupIterator)
+}
+
+func NewStandaloneCommandClient(sharedDirectory string) *CommandClient {
+	return &CommandClient{
+		sharedDirectory: sharedDirectory,
+	}
 }
 
 func NewCommandClient(sharedDirectory string, handler CommandClientHandler, options *CommandClientOptions) *CommandClient {
@@ -36,16 +43,16 @@ func NewCommandClient(sharedDirectory string, handler CommandClientHandler, opti
 	}
 }
 
-func clientConnect(sharedDirectory string) (net.Conn, error) {
+func (c *CommandClient) directConnect() (net.Conn, error) {
 	return net.DialUnix("unix", nil, &net.UnixAddr{
-		Name: filepath.Join(sharedDirectory, "command.sock"),
+		Name: filepath.Join(c.sharedDirectory, "command.sock"),
 		Net:  "unix",
 	})
 }
 
 func (c *CommandClient) Connect() error {
 	common.Close(c.conn)
-	conn, err := clientConnect(c.sharedDirectory)
+	conn, err := c.directConnect()
 	if err != nil {
 		return err
 	}
@@ -65,6 +72,13 @@ func (c *CommandClient) Connect() error {
 		}
 		c.handler.Connected()
 		go c.handleStatusConn(conn)
+	case CommandGroup:
+		err = binary.Write(conn, binary.BigEndian, c.options.StatusInterval)
+		if err != nil {
+			return E.Cause(err, "write interval")
+		}
+		c.handler.Connected()
+		go c.handleGroupConn(conn)
 	}
 	return nil
 }

experimental/libbox/command_conntrack.go

@@ -9,8 +9,8 @@ import (
 	"github.com/sagernet/sing-box/common/dialer/conntrack"
 )
 
-func ClientCloseConnections(sharedDirectory string) error {
-	conn, err := clientConnect(sharedDirectory)
+func (c *CommandClient) CloseConnections() error {
+	conn, err := c.directConnect()
 	if err != nil {
 		return err
 	}

experimental/libbox/command_group.go

@@ -0,0 +1,228 @@
+package libbox
+
+import (
+	"encoding/binary"
+	"io"
+	"net"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/urltest"
+	"github.com/sagernet/sing-box/outbound"
+	"github.com/sagernet/sing/common/rw"
+	"github.com/sagernet/sing/service"
+)
+
+type OutboundGroup struct {
+	Tag        string
+	Type       string
+	Selectable bool
+	Selected   string
+	items      []*OutboundGroupItem
+}
+
+func (g *OutboundGroup) GetItems() OutboundGroupItemIterator {
+	return newIterator(g.items)
+}
+
+type OutboundGroupIterator interface {
+	Next() *OutboundGroup
+	HasNext() bool
+}
+
+type OutboundGroupItem struct {
+	Tag          string
+	Type         string
+	URLTestTime  int64
+	URLTestDelay int32
+}
+
+type OutboundGroupItemIterator interface {
+	Next() *OutboundGroupItem
+	HasNext() bool
+}
+
+func (c *CommandClient) handleGroupConn(conn net.Conn) {
+	defer conn.Close()
+
+	for {
+		groups, err := readGroups(conn)
+		if err != nil {
+			c.handler.Disconnected(err.Error())
+			return
+		}
+		c.handler.WriteGroups(groups)
+	}
+}
+
+func (s *CommandServer) handleGroupConn(conn net.Conn) error {
+	defer conn.Close()
+	ctx := connKeepAlive(conn)
+	for {
+		service := s.service
+		if service != nil {
+			err := writeGroups(conn, service)
+			if err != nil {
+				return err
+			}
+		} else {
+			err := binary.Write(conn, binary.BigEndian, uint16(0))
+			if err != nil {
+				return err
+			}
+		}
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-s.urlTestUpdate:
+		}
+	}
+}
+
+func readGroups(reader io.Reader) (OutboundGroupIterator, error) {
+	var groupLength uint16
+	err := binary.Read(reader, binary.BigEndian, &groupLength)
+	if err != nil {
+		return nil, err
+	}
+
+	groups := make([]*OutboundGroup, 0, groupLength)
+	for i := 0; i < int(groupLength); i++ {
+		var group OutboundGroup
+		group.Tag, err = rw.ReadVString(reader)
+		if err != nil {
+			return nil, err
+		}
+
+		group.Type, err = rw.ReadVString(reader)
+		if err != nil {
+			return nil, err
+		}
+
+		err = binary.Read(reader, binary.BigEndian, &group.Selectable)
+		if err != nil {
+			return nil, err
+		}
+
+		group.Selected, err = rw.ReadVString(reader)
+		if err != nil {
+			return nil, err
+		}
+
+		var itemLength uint16
+		err = binary.Read(reader, binary.BigEndian, &itemLength)
+		if err != nil {
+			return nil, err
+		}
+
+		group.items = make([]*OutboundGroupItem, itemLength)
+		for j := 0; j < int(itemLength); j++ {
+			var item OutboundGroupItem
+			item.Tag, err = rw.ReadVString(reader)
+			if err != nil {
+				return nil, err
+			}
+
+			item.Type, err = rw.ReadVString(reader)
+			if err != nil {
+				return nil, err
+			}
+
+			err = binary.Read(reader, binary.BigEndian, &item.URLTestTime)
+			if err != nil {
+				return nil, err
+			}
+
+			err = binary.Read(reader, binary.BigEndian, &item.URLTestDelay)
+			if err != nil {
+				return nil, err
+			}
+
+			group.items[j] = &item
+		}
+		groups = append(groups, &group)
+	}
+	return newIterator(groups), nil
+}
+
+func writeGroups(writer io.Writer, boxService *BoxService) error {
+	historyStorage := service.PtrFromContext[urltest.HistoryStorage](boxService.ctx)
+
+	outbounds := boxService.instance.Router().Outbounds()
+	var iGroups []adapter.OutboundGroup
+	for _, it := range outbounds {
+		if group, isGroup := it.(adapter.OutboundGroup); isGroup {
+			iGroups = append(iGroups, group)
+		}
+	}
+	var groups []OutboundGroup
+	for _, iGroup := range iGroups {
+		var group OutboundGroup
+		group.Tag = iGroup.Tag()
+		group.Type = iGroup.Type()
+		_, group.Selectable = iGroup.(*outbound.Selector)
+		group.Selected = iGroup.Now()
+
+		for _, itemTag := range iGroup.All() {
+			itemOutbound, isLoaded := boxService.instance.Router().Outbound(itemTag)
+			if !isLoaded {
+				continue
+			}
+
+			var item OutboundGroupItem
+			item.Tag = itemTag
+			item.Type = itemOutbound.Type()
+			if history := historyStorage.LoadURLTestHistory(adapter.OutboundTag(itemOutbound)); history != nil {
+				item.URLTestTime = history.Time.Unix()
+				item.URLTestDelay = int32(history.Delay)
+			}
+			group.items = append(group.items, &item)
+		}
+		groups = append(groups, group)
+	}
+
+	err := binary.Write(writer, binary.BigEndian, uint16(len(groups)))
+	if err != nil {
+		return err
+	}
+	for _, group := range groups {
+		err = rw.WriteVString(writer, group.Tag)
+		if err != nil {
+			return err
+		}
+		err = rw.WriteVString(writer, group.Type)
+		if err != nil {
+			return err
+		}
+		err = binary.Write(writer, binary.BigEndian, group.Selectable)
+		if err != nil {
+			return err
+		}
+		err = rw.WriteVString(writer, group.Selected)
+		if err != nil {
+			return err
+		}
+		err = binary.Write(writer, binary.BigEndian, uint16(len(group.items)))
+		if err != nil {
+			return err
+		}
+		for _, item := range group.items {
+			err = rw.WriteVString(writer, item.Tag)
+			if err != nil {
+				return err
+			}
+			err = rw.WriteVString(writer, item.Type)
+			if err != nil {
+				return err
+			}
+			err = binary.Write(writer, binary.BigEndian, item.URLTestTime)
+			if err != nil {
+				return err
+			}
+			err = binary.Write(writer, binary.BigEndian, item.URLTestDelay)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}

experimental/libbox/command_log.go

@@ -11,7 +11,7 @@ func (s *CommandServer) WriteMessage(message string) {
 	s.subscriber.Emit(message)
 	s.access.Lock()
 	s.savedLines.PushBack(message)
-	if s.savedLines.Len() > 100 {
+	if s.savedLines.Len() > s.maxLines {
 		s.savedLines.Remove(s.savedLines.Front())
 	}
 	s.access.Unlock()

experimental/libbox/command_reload.go

@@ -8,8 +8,8 @@ import (
 	"github.com/sagernet/sing/common/rw"
 )
 
-func ClientServiceReload(sharedDirectory string) error {
-	conn, err := clientConnect(sharedDirectory)
+func (c *CommandClient) ServiceReload() error {
+	conn, err := c.directConnect()
 	if err != nil {
 		return err
 	}

experimental/libbox/command_select.go

@@ -0,0 +1,59 @@
+package libbox
+
+import (
+	"encoding/binary"
+	"net"
+
+	"github.com/sagernet/sing-box/outbound"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/rw"
+)
+
+func (c *CommandClient) SelectOutbound(groupTag string, outboundTag string) error {
+	conn, err := c.directConnect()
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	err = binary.Write(conn, binary.BigEndian, uint8(CommandSelectOutbound))
+	if err != nil {
+		return err
+	}
+	err = rw.WriteVString(conn, groupTag)
+	if err != nil {
+		return err
+	}
+	err = rw.WriteVString(conn, outboundTag)
+	if err != nil {
+		return err
+	}
+	return readError(conn)
+}
+
+func (s *CommandServer) handleSelectOutbound(conn net.Conn) error {
+	defer conn.Close()
+	groupTag, err := rw.ReadVString(conn)
+	if err != nil {
+		return err
+	}
+	outboundTag, err := rw.ReadVString(conn)
+	if err != nil {
+		return err
+	}
+	service := s.service
+	if service == nil {
+		return writeError(conn, E.New("service not ready"))
+	}
+	outboundGroup, isLoaded := service.instance.Router().Outbound(groupTag)
+	if !isLoaded {
+		return writeError(conn, E.New("selector not found: ", groupTag))
+	}
+	selector, isSelector := outboundGroup.(*outbound.Selector)
+	if !isSelector {
+		return writeError(conn, E.New("outbound is not a selector: ", groupTag))
+	}
+	if !selector.SelectOutbound(outboundTag) {
+		return writeError(conn, E.New("outbound not found in selector: ", outboundTag))
+	}
+	return writeError(conn, nil)
+}

experimental/libbox/command_server.go

@@ -7,12 +7,14 @@ import (
 	"path/filepath"
 	"sync"
 
+	"github.com/sagernet/sing-box/common/urltest"
 	"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"
+	"github.com/sagernet/sing/service"
 )
 
 type CommandServer struct {
@@ -22,26 +24,51 @@ type CommandServer struct {
 
 	access     sync.Mutex
 	savedLines *list.List[string]
+	maxLines   int
 	subscriber *observable.Subscriber[string]
 	observer   *observable.Observer[string]
+	service    *BoxService
+
+	urlTestListener *list.Element[func()]
+	urlTestUpdate   chan struct{}
 }
 
 type CommandServerHandler interface {
-	ServiceStop() error
 	ServiceReload() error
 }
 
-func NewCommandServer(sharedDirectory string, handler CommandServerHandler) *CommandServer {
+func NewCommandServer(sharedDirectory string, handler CommandServerHandler, maxLines int32) *CommandServer {
 	server := &CommandServer{
-		sockPath:   filepath.Join(sharedDirectory, "command.sock"),
-		handler:    handler,
-		savedLines: new(list.List[string]),
-		subscriber: observable.NewSubscriber[string](128),
+		sockPath:      filepath.Join(sharedDirectory, "command.sock"),
+		handler:       handler,
+		savedLines:    new(list.List[string]),
+		maxLines:      int(maxLines),
+		subscriber:    observable.NewSubscriber[string](128),
+		urlTestUpdate: make(chan struct{}, 1),
 	}
 	server.observer = observable.NewObserver[string](server.subscriber, 64)
 	return server
 }
 
+func (s *CommandServer) SetService(newService *BoxService) {
+	if s.service != nil && s.listener != nil {
+		service.PtrFromContext[urltest.HistoryStorage](s.service.ctx).RemoveListener(s.urlTestListener)
+		s.urlTestListener = nil
+	}
+	s.service = newService
+	if newService != nil {
+		s.urlTestListener = service.PtrFromContext[urltest.HistoryStorage](newService.ctx).AddListener(s.notifyURLTestUpdate)
+	}
+	s.notifyURLTestUpdate()
+}
+
+func (s *CommandServer) notifyURLTestUpdate() {
+	select {
+	case s.urlTestUpdate <- struct{}{}:
+	default:
+	}
+}
+
 func (s *CommandServer) Start() error {
 	os.Remove(s.sockPath)
 	listener, err := net.ListenUnix("unix", &net.UnixAddr{
@@ -51,6 +78,14 @@ func (s *CommandServer) Start() error {
 	if err != nil {
 		return err
 	}
+	if sUserID > 0 {
+		err = os.Chown(s.sockPath, sUserID, sGroupID)
+		if err != nil {
+			listener.Close()
+			os.Remove(s.sockPath)
+			return err
+		}
+	}
 	s.listener = listener
 	go s.loopConnection(listener)
 	return nil
@@ -92,12 +127,16 @@ func (s *CommandServer) handleConnection(conn net.Conn) error {
 		return s.handleLogConn(conn)
 	case CommandStatus:
 		return s.handleStatusConn(conn)
-	case CommandServiceStop:
-		return s.handleServiceStop(conn)
 	case CommandServiceReload:
 		return s.handleServiceReload(conn)
 	case CommandCloseConnections:
 		return s.handleCloseConnections(conn)
+	case CommandGroup:
+		return s.handleGroupConn(conn)
+	case CommandSelectOutbound:
+		return s.handleSelectOutbound(conn)
+	case CommandURLTest:
+		return s.handleURLTest(conn)
 	default:
 		return E.New("unknown command: ", command)
 	}

experimental/libbox/command_shared.go

@@ -0,0 +1,39 @@
+package libbox
+
+import (
+	"encoding/binary"
+	"io"
+
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/rw"
+)
+
+func readError(reader io.Reader) error {
+	var hasError bool
+	err := binary.Read(reader, binary.BigEndian, &hasError)
+	if err != nil {
+		return err
+	}
+	if hasError {
+		errorMessage, err := rw.ReadVString(reader)
+		if err != nil {
+			return err
+		}
+		return E.New(errorMessage)
+	}
+	return nil
+}
+
+func writeError(writer io.Writer, wErr error) error {
+	err := binary.Write(writer, binary.BigEndian, wErr != nil)
+	if err != nil {
+		return err
+	}
+	if wErr != nil {
+		err = rw.WriteVString(writer, wErr.Error())
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

experimental/libbox/command_status.go

@@ -7,22 +7,40 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/common/dialer/conntrack"
+	"github.com/sagernet/sing-box/experimental/clashapi"
 	E "github.com/sagernet/sing/common/exceptions"
 )
 
 type StatusMessage struct {
-	Memory      int64
-	Goroutines  int32
-	Connections int32
+	Memory           int64
+	Goroutines       int32
+	ConnectionsIn    int32
+	ConnectionsOut   int32
+	TrafficAvailable bool
+	Uplink           int64
+	Downlink         int64
+	UplinkTotal      int64
+	DownlinkTotal    int64
 }
 
-func readStatus() StatusMessage {
+func (s *CommandServer) readStatus() StatusMessage {
 	var memStats runtime.MemStats
 	runtime.ReadMemStats(&memStats)
 	var message StatusMessage
 	message.Memory = int64(memStats.StackInuse + memStats.HeapInuse + memStats.HeapIdle - memStats.HeapReleased)
 	message.Goroutines = int32(runtime.NumGoroutine())
-	message.Connections = int32(conntrack.Count())
+	message.ConnectionsOut = int32(conntrack.Count())
+
+	if s.service != nil {
+		if clashServer := s.service.instance.Router().ClashServer(); clashServer != nil {
+			message.TrafficAvailable = true
+			trafficManager := clashServer.(*clashapi.Server).TrafficManager()
+			message.Uplink, message.Downlink = trafficManager.Now()
+			message.UplinkTotal, message.DownlinkTotal = trafficManager.Total()
+			message.ConnectionsIn = int32(trafficManager.Connections())
+		}
+	}
+
 	return message
 }
 
@@ -36,7 +54,7 @@ func (s *CommandServer) handleStatusConn(conn net.Conn) error {
 	defer ticker.Stop()
 	ctx := connKeepAlive(conn)
 	for {
-		err = binary.Write(conn, binary.BigEndian, readStatus())
+		err = binary.Write(conn, binary.BigEndian, s.readStatus())
 		if err != nil {
 			return err
 		}

experimental/libbox/command_stop.go

@@ -1,48 +0,0 @@
-package libbox
-
-import (
-	"encoding/binary"
-	"net"
-	"runtime/debug"
-
-	E "github.com/sagernet/sing/common/exceptions"
-	"github.com/sagernet/sing/common/rw"
-)
-
-func ClientServiceStop(sharedDirectory string) error {
-	conn, err := clientConnect(sharedDirectory)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-	err = binary.Write(conn, binary.BigEndian, uint8(CommandServiceStop))
-	if err != nil {
-		return err
-	}
-	var hasError bool
-	err = binary.Read(conn, binary.BigEndian, &hasError)
-	if err != nil {
-		return err
-	}
-	if hasError {
-		errorMessage, err := rw.ReadVString(conn)
-		if err != nil {
-			return err
-		}
-		return E.New(errorMessage)
-	}
-	return nil
-}
-
-func (s *CommandServer) handleServiceStop(conn net.Conn) error {
-	rErr := s.handler.ServiceStop()
-	err := binary.Write(conn, binary.BigEndian, rErr != nil)
-	if err != nil {
-		return err
-	}
-	if rErr != nil {
-		return rw.WriteVString(conn, rErr.Error())
-	}
-	debug.FreeOSMemory()
-	return nil
-}

experimental/libbox/command_urltest.go

@@ -0,0 +1,95 @@
+package libbox
+
+import (
+	"encoding/binary"
+	"net"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/urltest"
+	"github.com/sagernet/sing-box/outbound"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/batch"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/rw"
+)
+
+func (c *CommandClient) URLTest(groupTag string) error {
+	conn, err := c.directConnect()
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	err = binary.Write(conn, binary.BigEndian, uint8(CommandURLTest))
+	if err != nil {
+		return err
+	}
+	err = rw.WriteVString(conn, groupTag)
+	if err != nil {
+		return err
+	}
+	return readError(conn)
+}
+
+func (s *CommandServer) handleURLTest(conn net.Conn) error {
+	defer conn.Close()
+	groupTag, err := rw.ReadVString(conn)
+	if err != nil {
+		return err
+	}
+	service := s.service
+	if service == nil {
+		return nil
+	}
+	abstractOutboundGroup, isLoaded := service.instance.Router().Outbound(groupTag)
+	if !isLoaded {
+		return writeError(conn, E.New("outbound group not found: ", groupTag))
+	}
+	outboundGroup, isOutboundGroup := abstractOutboundGroup.(adapter.OutboundGroup)
+	if !isOutboundGroup {
+		return writeError(conn, E.New("outbound is not a group: ", groupTag))
+	}
+	urlTest, isURLTest := abstractOutboundGroup.(*outbound.URLTest)
+	if isURLTest {
+		go urlTest.CheckOutbounds()
+	} else {
+		var historyStorage *urltest.HistoryStorage
+		if clashServer := service.instance.Router().ClashServer(); clashServer != nil {
+			historyStorage = clashServer.HistoryStorage()
+		} else {
+			return writeError(conn, E.New("Clash API is required for URLTest on non-URLTest group"))
+		}
+
+		outbounds := common.Filter(common.Map(outboundGroup.All(), func(it string) adapter.Outbound {
+			itOutbound, _ := service.instance.Router().Outbound(it)
+			return itOutbound
+		}), func(it adapter.Outbound) bool {
+			if it == nil {
+				return false
+			}
+			_, isGroup := it.(adapter.OutboundGroup)
+			if isGroup {
+				return false
+			}
+			return true
+		})
+		b, _ := batch.New(service.ctx, batch.WithConcurrencyNum[any](10))
+		for _, detour := range outbounds {
+			outboundToTest := detour
+			outboundTag := outboundToTest.Tag()
+			b.Go(outboundTag, func() (any, error) {
+				t, err := urltest.URLTest(service.ctx, "", outboundToTest)
+				if err != nil {
+					historyStorage.DeleteURLTestHistory(outboundTag)
+				} else {
+					historyStorage.StoreURLTestHistory(outboundTag, &urltest.History{
+						Time:  time.Now(),
+						Delay: t,
+					})
+				}
+				return nil, nil
+			})
+		}
+	}
+	return writeError(conn, nil)
+}

experimental/libbox/dns.go

@@ -0,0 +1,162 @@
+package libbox
+
+import (
+	"context"
+	"net/netip"
+	"strings"
+	"syscall"
+
+	"github.com/sagernet/sing-dns"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/common/task"
+
+	mDNS "github.com/miekg/dns"
+)
+
+type LocalDNSTransport interface {
+	Raw() bool
+	Lookup(ctx *ExchangeContext, network string, domain string) error
+	Exchange(ctx *ExchangeContext, message []byte) error
+}
+
+func RegisterLocalDNSTransport(transport LocalDNSTransport) {
+	if transport == nil {
+		dns.RegisterTransport([]string{"local"}, dns.CreateLocalTransport)
+	} else {
+		dns.RegisterTransport([]string{"local"}, func(name string, ctx context.Context, logger logger.ContextLogger, dialer N.Dialer, link string) (dns.Transport, error) {
+			return &platformLocalDNSTransport{
+				iif: transport,
+			}, nil
+		})
+	}
+}
+
+var _ dns.Transport = (*platformLocalDNSTransport)(nil)
+
+type platformLocalDNSTransport struct {
+	iif LocalDNSTransport
+}
+
+func (p *platformLocalDNSTransport) Name() string {
+	return "local"
+}
+
+func (p *platformLocalDNSTransport) Start() error {
+	return nil
+}
+
+func (p *platformLocalDNSTransport) Close() error {
+	return nil
+}
+
+func (p *platformLocalDNSTransport) Raw() bool {
+	return p.iif.Raw()
+}
+
+func (p *platformLocalDNSTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
+	messageBytes, err := message.Pack()
+	if err != nil {
+		return nil, err
+	}
+	response := &ExchangeContext{
+		context: ctx,
+	}
+	var responseMessage *mDNS.Msg
+	return responseMessage, task.Run(ctx, func() error {
+		err = p.iif.Exchange(response, messageBytes)
+		if err != nil {
+			return err
+		}
+		if response.error != nil {
+			return response.error
+		}
+		responseMessage = &response.message
+		return nil
+	})
+}
+
+func (p *platformLocalDNSTransport) Lookup(ctx context.Context, domain string, strategy dns.DomainStrategy) ([]netip.Addr, error) {
+	var network string
+	switch strategy {
+	case dns.DomainStrategyUseIPv4:
+		network = "ip4"
+	case dns.DomainStrategyPreferIPv6:
+		network = "ip6"
+	default:
+		network = "ip"
+	}
+	response := &ExchangeContext{
+		context: ctx,
+	}
+	var responseAddr []netip.Addr
+	return responseAddr, task.Run(ctx, func() error {
+		err := p.iif.Lookup(response, network, domain)
+		if err != nil {
+			return err
+		}
+		if response.error != nil {
+			return response.error
+		}
+		switch strategy {
+		case dns.DomainStrategyUseIPv4:
+			responseAddr = common.Filter(response.addresses, func(it netip.Addr) bool {
+				return it.Is4()
+			})
+		case dns.DomainStrategyPreferIPv6:
+			responseAddr = common.Filter(response.addresses, func(it netip.Addr) bool {
+				return it.Is6()
+			})
+		default:
+			responseAddr = response.addresses
+		}
+		/*if len(responseAddr) == 0 {
+			response.error = dns.RCodeSuccess
+		}*/
+		return nil
+	})
+}
+
+type Func interface {
+	Invoke() error
+}
+
+type ExchangeContext struct {
+	context   context.Context
+	message   mDNS.Msg
+	addresses []netip.Addr
+	error     error
+}
+
+func (c *ExchangeContext) OnCancel(callback Func) {
+	go func() {
+		<-c.context.Done()
+		callback.Invoke()
+	}()
+}
+
+func (c *ExchangeContext) Success(result string) {
+	c.addresses = common.Map(common.Filter(strings.Split(result, "\n"), func(it string) bool {
+		return !common.IsEmpty(it)
+	}), func(it string) netip.Addr {
+		return M.ParseSocksaddrHostPort(it, 0).Unwrap().Addr
+	})
+}
+
+func (c *ExchangeContext) RawSuccess(result []byte) {
+	err := c.message.Unpack(result)
+	if err != nil {
+		c.error = E.Cause(err, "parse response")
+	}
+}
+
+func (c *ExchangeContext) ErrorCode(code int32) {
+	c.error = dns.RCodeError(code)
+}
+
+func (c *ExchangeContext) ErrnoCode(code int32) {
+	c.error = syscall.Errno(code)
+}

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

@@ -18,6 +18,14 @@ func RedirectStderr(path string) error {
 	if err != nil {
 		return err
 	}
+	if sUserID > 0 {
+		err = outputFile.Chown(sUserID, sGroupID)
+		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()

experimental/libbox/memory.go

@@ -1,18 +1,22 @@
-//go:build darwin
-
 package libbox
 
 import (
+	"math"
 	runtimeDebug "runtime/debug"
 
 	"github.com/sagernet/sing-box/common/dialer/conntrack"
 )
 
-const memoryLimit = 30 * 1024 * 1024
-
-func SetMemoryLimit() {
-	runtimeDebug.SetGCPercent(10)
-	runtimeDebug.SetMemoryLimit(memoryLimit)
-	conntrack.KillerEnabled = true
-	conntrack.MemoryLimit = memoryLimit
+func SetMemoryLimit(enabled bool) {
+	const memoryLimit = 30 * 1024 * 1024
+	if enabled {
+		runtimeDebug.SetGCPercent(10)
+		runtimeDebug.SetMemoryLimit(memoryLimit)
+		conntrack.KillerEnabled = true
+		conntrack.MemoryLimit = memoryLimit
+	} else {
+		runtimeDebug.SetGCPercent(100)
+		runtimeDebug.SetMemoryLimit(math.MaxInt64)
+		conntrack.KillerEnabled = false
+	}
 }

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
+}

experimental/libbox/platform.go

@@ -1,8 +1,11 @@
 package libbox
 
-import "github.com/sagernet/sing-box/option"
+import (
+	"github.com/sagernet/sing-box/option"
+)
 
 type PlatformInterface interface {
+	UsePlatformAutoDetectInterfaceControl() bool
 	AutoDetectInterfaceControl(fd int32) error
 	OpenTun(options TunOptions) (int32, error)
 	WriteLog(message string)
@@ -10,6 +13,12 @@ type PlatformInterface interface {
 	FindConnectionOwner(ipProtocol int32, sourceAddress string, sourcePort int32, destinationAddress string, destinationPort int32) (int32, error)
 	PackageNameByUid(uid int32) (string, error)
 	UIDByPackageName(packageName string) (int32, error)
+	UsePlatformDefaultInterfaceMonitor() bool
+	StartDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
+	CloseDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
+	UsePlatformInterfaceGetter() bool
+	GetInterfaces() (NetworkInterfaceIterator, error)
+	UnderNetworkExtension() bool
 }
 
 type TunInterface interface {
@@ -17,8 +26,19 @@ type TunInterface interface {
 	Close() error
 }
 
-type OnDemandRuleIterator interface {
-	Next() OnDemandRule
+type InterfaceUpdateListener interface {
+	UpdateDefaultInterface(interfaceName string, interfaceIndex int32)
+}
+
+type NetworkInterface struct {
+	Index     int32
+	MTU       int32
+	Name      string
+	Addresses StringIterator
+}
+
+type NetworkInterfaceIterator interface {
+	Next() *NetworkInterface
 	HasNext() bool
 }
 
@@ -31,6 +51,11 @@ type OnDemandRule interface {
 	ProbeURL() string
 }
 
+type OnDemandRuleIterator interface {
+	Next() OnDemandRule
+	HasNext() bool
+}
+
 type onDemandRule struct {
 	option.OnDemandRule
 }

experimental/libbox/platform/interface.go

@@ -1,17 +1,35 @@
 package platform
 
 import (
+	"context"
 	"io"
+	"net/netip"
 
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common/control"
+	E "github.com/sagernet/sing/common/exceptions"
 )
 
 type Interface interface {
+	Initialize(ctx context.Context, router adapter.Router) error
+	UsePlatformAutoDetectInterfaceControl() bool
 	AutoDetectInterfaceControl() control.Func
-	OpenTun(options tun.Options, platformOptions option.TunPlatformOptions) (tun.Tun, error)
+	OpenTun(options *tun.Options, platformOptions option.TunPlatformOptions) (tun.Tun, error)
+	UsePlatformDefaultInterfaceMonitor() bool
+	CreateDefaultInterfaceMonitor(errorHandler E.Handler) tun.DefaultInterfaceMonitor
+	UsePlatformInterfaceGetter() bool
+	Interfaces() ([]NetworkInterface, error)
+	UnderNetworkExtension() bool
 	process.Searcher
 	io.Writer
 }
+
+type NetworkInterface struct {
+	Index     int
+	MTU       int
+	Name      string
+	Addresses []netip.Prefix
+}

experimental/libbox/service.go

@@ -6,14 +6,19 @@ import (
 	"syscall"
 
 	"github.com/sagernet/sing-box"
+	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
+	"github.com/sagernet/sing-box/common/urltest"
 	"github.com/sagernet/sing-box/experimental/libbox/internal/procfs"
 	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/control"
 	E "github.com/sagernet/sing/common/exceptions"
 	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
+	"github.com/sagernet/sing/service/filemanager"
 )
 
 type BoxService struct {
@@ -28,10 +33,12 @@ func NewService(configContent string, platformInterface PlatformInterface) (*Box
 		return nil, err
 	}
 	ctx, cancel := context.WithCancel(context.Background())
+	ctx = filemanager.WithDefault(ctx, sBasePath, sTempPath, sUserID, sGroupID)
+	ctx = service.ContextWithPtr(ctx, urltest.NewHistoryStorage())
 	instance, err := box.New(box.Options{
 		Context:           ctx,
 		Options:           options,
-		PlatformInterface: &platformInterfaceWrapper{platformInterface, platformInterface.UseProcFS()},
+		PlatformInterface: &platformInterfaceWrapper{iif: platformInterface, useProcFS: platformInterface.UseProcFS()},
 	})
 	if err != nil {
 		cancel()
@@ -58,6 +65,16 @@ var _ platform.Interface = (*platformInterfaceWrapper)(nil)
 type platformInterfaceWrapper struct {
 	iif       PlatformInterface
 	useProcFS bool
+	router    adapter.Router
+}
+
+func (w *platformInterfaceWrapper) Initialize(ctx context.Context, router adapter.Router) error {
+	w.router = router
+	return nil
+}
+
+func (w *platformInterfaceWrapper) UsePlatformAutoDetectInterfaceControl() bool {
+	return w.iif.UsePlatformAutoDetectInterfaceControl()
 }
 
 func (w *platformInterfaceWrapper) AutoDetectInterfaceControl() control.Func {
@@ -68,7 +85,7 @@ func (w *platformInterfaceWrapper) AutoDetectInterfaceControl() control.Func {
 	}
 }
 
-func (w *platformInterfaceWrapper) OpenTun(options tun.Options, platformOptions option.TunPlatformOptions) (tun.Tun, error) {
+func (w *platformInterfaceWrapper) OpenTun(options *tun.Options, platformOptions option.TunPlatformOptions) (tun.Tun, error) {
 	if len(options.IncludeUID) > 0 || len(options.ExcludeUID) > 0 {
 		return nil, E.New("android: unsupported uid options")
 	}
@@ -79,12 +96,16 @@ func (w *platformInterfaceWrapper) OpenTun(options tun.Options, platformOptions
 	if err != nil {
 		return nil, err
 	}
+	options.Name, err = getTunnelName(tunFd)
+	if err != nil {
+		return nil, E.Cause(err, "query tun name")
+	}
 	dupFd, err := dup(int(tunFd))
 	if err != nil {
 		return nil, E.Cause(err, "dup tun file descriptor")
 	}
 	options.FileDescriptor = dupFd
-	return tun.New(options)
+	return tun.New(*options)
 }
 
 func (w *platformInterfaceWrapper) Write(p []byte) (n int, err error) {
@@ -118,3 +139,40 @@ func (w *platformInterfaceWrapper) FindProcessInfo(ctx context.Context, network
 	packageName, _ := w.iif.PackageNameByUid(uid)
 	return &process.Info{UserId: uid, PackageName: packageName}, nil
 }
+
+func (w *platformInterfaceWrapper) UsePlatformDefaultInterfaceMonitor() bool {
+	return w.iif.UsePlatformDefaultInterfaceMonitor()
+}
+
+func (w *platformInterfaceWrapper) CreateDefaultInterfaceMonitor(errorHandler E.Handler) tun.DefaultInterfaceMonitor {
+	return &platformDefaultInterfaceMonitor{
+		platformInterfaceWrapper: w,
+		errorHandler:             errorHandler,
+		defaultInterfaceIndex:    -1,
+	}
+}
+
+func (w *platformInterfaceWrapper) UsePlatformInterfaceGetter() bool {
+	return w.iif.UsePlatformInterfaceGetter()
+}
+
+func (w *platformInterfaceWrapper) Interfaces() ([]platform.NetworkInterface, error) {
+	interfaceIterator, err := w.iif.GetInterfaces()
+	if err != nil {
+		return nil, err
+	}
+	var interfaces []platform.NetworkInterface
+	for _, netInterface := range iteratorToArray[*NetworkInterface](interfaceIterator) {
+		interfaces = append(interfaces, platform.NetworkInterface{
+			Index:     int(netInterface.Index),
+			MTU:       int(netInterface.MTU),
+			Name:      netInterface.Name,
+			Addresses: common.Map(iteratorToArray[string](netInterface.Addresses), netip.MustParsePrefix),
+		})
+	}
+	return interfaces, nil
+}
+
+func (w *platformInterfaceWrapper) UnderNetworkExtension() bool {
+	return w.iif.UnderNetworkExtension()
+}

experimental/libbox/setup.go

@@ -1,17 +1,39 @@
 package libbox
 
 import (
+	"os"
+	"os/user"
+	"strconv"
+
 	C "github.com/sagernet/sing-box/constant"
 
 	"github.com/dustin/go-humanize"
 )
 
-func SetBasePath(path string) {
-	C.SetBasePath(path)
+var (
+	sBasePath string
+	sTempPath string
+	sUserID   int
+	sGroupID  int
+)
+
+func Setup(basePath string, tempPath string) {
+	sBasePath = basePath
+	sTempPath = tempPath
+	sUserID = os.Getuid()
+	sGroupID = os.Getgid()
 }
 
-func SetTempPath(path string) {
-	C.SetTempPath(path)
+func SetupWithUsername(basePath string, tempPath string, username string) error {
+	sBasePath = basePath
+	sTempPath = tempPath
+	sUser, err := user.Lookup(username)
+	if err != nil {
+		return err
+	}
+	sUserID, _ = strconv.Atoi(sUser.Uid)
+	sGroupID, _ = strconv.Atoi(sUser.Gid)
+	return nil
 }
 
 func Version() string {