refactor: WireGuard endpoint

adapter/endpoint.go

@@ -0,0 +1,28 @@
+package adapter
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+)
+
+type Endpoint interface {
+	Lifecycle
+	Type() string
+	Tag() string
+	Outbound
+}
+
+type EndpointRegistry interface {
+	option.EndpointOptionsRegistry
+	Create(ctx context.Context, router Router, logger log.ContextLogger, tag string, endpointType string, options any) (Endpoint, error)
+}
+
+type EndpointManager interface {
+	Lifecycle
+	Endpoints() []Endpoint
+	Get(tag string) (Endpoint, bool)
+	Remove(tag string) error
+	Create(ctx context.Context, router Router, logger log.ContextLogger, tag string, endpointType string, options any) error
+}

adapter/endpoint/adapter.go

@@ -0,0 +1,43 @@
+package endpoint
+
+import "github.com/sagernet/sing-box/option"
+
+type Adapter struct {
+	endpointType string
+	endpointTag  string
+	network      []string
+	dependencies []string
+}
+
+func NewAdapter(endpointType string, endpointTag string, network []string, dependencies []string) Adapter {
+	return Adapter{
+		endpointType: endpointType,
+		endpointTag:  endpointTag,
+		network:      network,
+		dependencies: dependencies,
+	}
+}
+
+func NewAdapterWithDialerOptions(endpointType string, endpointTag string, network []string, dialOptions option.DialerOptions) Adapter {
+	var dependencies []string
+	if dialOptions.Detour != "" {
+		dependencies = []string{dialOptions.Detour}
+	}
+	return NewAdapter(endpointType, endpointTag, network, dependencies)
+}
+
+func (a *Adapter) Type() string {
+	return a.endpointType
+}
+
+func (a *Adapter) Tag() string {
+	return a.endpointTag
+}
+
+func (a *Adapter) Network() []string {
+	return a.network
+}
+
+func (a *Adapter) Dependencies() []string {
+	return a.dependencies
+}

adapter/endpoint/manager.go

@@ -0,0 +1,147 @@
+package endpoint
+
+import (
+	"context"
+	"os"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/common/taskmonitor"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+var _ adapter.EndpointManager = (*Manager)(nil)
+
+type Manager struct {
+	logger        log.ContextLogger
+	registry      adapter.EndpointRegistry
+	access        sync.Mutex
+	started       bool
+	stage         adapter.StartStage
+	endpoints     []adapter.Endpoint
+	endpointByTag map[string]adapter.Endpoint
+}
+
+func NewManager(logger log.ContextLogger, registry adapter.EndpointRegistry) *Manager {
+	return &Manager{
+		logger:        logger,
+		registry:      registry,
+		endpointByTag: make(map[string]adapter.Endpoint),
+	}
+}
+
+func (m *Manager) Start(stage adapter.StartStage) error {
+	m.access.Lock()
+	defer m.access.Unlock()
+	if m.started && m.stage >= stage {
+		panic("already started")
+	}
+	m.started = true
+	m.stage = stage
+	if stage == adapter.StartStateStart {
+		// started with outbound manager
+		return nil
+	}
+	for _, endpoint := range m.endpoints {
+		err := adapter.LegacyStart(endpoint, stage)
+		if err != nil {
+			return E.Cause(err, stage, " endpoint/", endpoint.Type(), "[", endpoint.Tag(), "]")
+		}
+	}
+	return nil
+}
+
+func (m *Manager) Close() error {
+	m.access.Lock()
+	defer m.access.Unlock()
+	if !m.started {
+		return nil
+	}
+	m.started = false
+	endpoints := m.endpoints
+	m.endpoints = nil
+	monitor := taskmonitor.New(m.logger, C.StopTimeout)
+	var err error
+	for _, endpoint := range endpoints {
+		monitor.Start("close endpoint/", endpoint.Type(), "[", endpoint.Tag(), "]")
+		err = E.Append(err, endpoint.Close(), func(err error) error {
+			return E.Cause(err, "close endpoint/", endpoint.Type(), "[", endpoint.Tag(), "]")
+		})
+		monitor.Finish()
+	}
+	return nil
+}
+
+func (m *Manager) Endpoints() []adapter.Endpoint {
+	m.access.Lock()
+	defer m.access.Unlock()
+	return m.endpoints
+}
+
+func (m *Manager) Get(tag string) (adapter.Endpoint, bool) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	endpoint, found := m.endpointByTag[tag]
+	return endpoint, found
+}
+
+func (m *Manager) Remove(tag string) error {
+	m.access.Lock()
+	endpoint, found := m.endpointByTag[tag]
+	if !found {
+		m.access.Unlock()
+		return os.ErrInvalid
+	}
+	delete(m.endpointByTag, tag)
+	index := common.Index(m.endpoints, func(it adapter.Endpoint) bool {
+		return it == endpoint
+	})
+	if index == -1 {
+		panic("invalid endpoint index")
+	}
+	m.endpoints = append(m.endpoints[:index], m.endpoints[index+1:]...)
+	started := m.started
+	m.access.Unlock()
+	if started {
+		return endpoint.Close()
+	}
+	return nil
+}
+
+func (m *Manager) Create(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, outboundType string, options any) error {
+	endpoint, err := m.registry.Create(ctx, router, logger, tag, outboundType, options)
+	if err != nil {
+		return err
+	}
+	m.access.Lock()
+	defer m.access.Unlock()
+	if m.started {
+		for _, stage := range adapter.ListStartStages {
+			err = adapter.LegacyStart(endpoint, stage)
+			if err != nil {
+				return E.Cause(err, stage, " endpoint/", endpoint.Type(), "[", endpoint.Tag(), "]")
+			}
+		}
+	}
+	if existsEndpoint, loaded := m.endpointByTag[tag]; loaded {
+		if m.started {
+			err = existsEndpoint.Close()
+			if err != nil {
+				return E.Cause(err, "close endpoint/", existsEndpoint.Type(), "[", existsEndpoint.Tag(), "]")
+			}
+		}
+		existsIndex := common.Index(m.endpoints, func(it adapter.Endpoint) bool {
+			return it == existsEndpoint
+		})
+		if existsIndex == -1 {
+			panic("invalid endpoint index")
+		}
+		m.endpoints = append(m.endpoints[:existsIndex], m.endpoints[existsIndex+1:]...)
+	}
+	m.endpoints = append(m.endpoints, endpoint)
+	m.endpointByTag[tag] = endpoint
+	return nil
+}

adapter/endpoint/registry.go

@@ -0,0 +1,72 @@
+package endpoint
+
+import (
+	"context"
+	"sync"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type ConstructorFunc[T any] func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options T) (adapter.Endpoint, error)
+
+func Register[Options any](registry *Registry, outboundType string, constructor ConstructorFunc[Options]) {
+	registry.register(outboundType, func() any {
+		return new(Options)
+	}, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, rawOptions any) (adapter.Endpoint, error) {
+		var options *Options
+		if rawOptions != nil {
+			options = rawOptions.(*Options)
+		}
+		return constructor(ctx, router, logger, tag, common.PtrValueOrDefault(options))
+	})
+}
+
+var _ adapter.EndpointRegistry = (*Registry)(nil)
+
+type (
+	optionsConstructorFunc func() any
+	constructorFunc        func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options any) (adapter.Endpoint, error)
+)
+
+type Registry struct {
+	access      sync.Mutex
+	optionsType map[string]optionsConstructorFunc
+	constructor map[string]constructorFunc
+}
+
+func NewRegistry() *Registry {
+	return &Registry{
+		optionsType: make(map[string]optionsConstructorFunc),
+		constructor: make(map[string]constructorFunc),
+	}
+}
+
+func (m *Registry) CreateOptions(outboundType string) (any, bool) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	optionsConstructor, loaded := m.optionsType[outboundType]
+	if !loaded {
+		return nil, false
+	}
+	return optionsConstructor(), true
+}
+
+func (m *Registry) Create(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, outboundType string, options any) (adapter.Endpoint, error) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	constructor, loaded := m.constructor[outboundType]
+	if !loaded {
+		return nil, E.New("outbound type not found: " + outboundType)
+	}
+	return constructor(ctx, router, logger, tag, options)
+}
+
+func (m *Registry) register(outboundType string, optionsConstructor optionsConstructorFunc, constructor constructorFunc) {
+	m.access.Lock()
+	defer m.access.Unlock()
+	m.optionsType[outboundType] = optionsConstructor
+	m.constructor[outboundType] = constructor
+}

adapter/inbound.go

@@ -13,7 +13,7 @@ import (
 )
 
 type Inbound interface {
-	Service
+	Lifecycle
 	Type() string
 	Tag() string
 }

adapter/inbound/manager.go

@@ -18,6 +18,7 @@ var _ adapter.InboundManager = (*Manager)(nil)
 type Manager struct {
 	logger       log.ContextLogger
 	registry     adapter.InboundRegistry
+	endpoint     adapter.EndpointManager
 	access       sync.Mutex
 	started      bool
 	stage        adapter.StartStage
@@ -25,10 +26,11 @@ type Manager struct {
 	inboundByTag map[string]adapter.Inbound
 }
 
-func NewManager(logger log.ContextLogger, registry adapter.InboundRegistry) *Manager {
+func NewManager(logger log.ContextLogger, registry adapter.InboundRegistry, endpoint adapter.EndpointManager) *Manager {
 	return &Manager{
 		logger:       logger,
 		registry:     registry,
+		endpoint:     endpoint,
 		inboundByTag: make(map[string]adapter.Inbound),
 	}
 }
@@ -79,9 +81,12 @@ func (m *Manager) Inbounds() []adapter.Inbound {
 
 func (m *Manager) Get(tag string) (adapter.Inbound, bool) {
 	m.access.Lock()
-	defer m.access.Unlock()
 	inbound, found := m.inboundByTag[tag]
-	return inbound, found
+	m.access.Unlock()
+	if found {
+		return inbound, true
+	}
+	return m.endpoint.Get(tag)
 }
 
 func (m *Manager) Remove(tag string) error {

adapter/lifecycle_legacy.go

@@ -1,6 +1,9 @@
 package adapter
 
 func LegacyStart(starter any, stage StartStage) error {
+	if lifecycle, isLifecycle := starter.(Lifecycle); isLifecycle {
+		return lifecycle.Start(stage)
+	}
 	switch stage {
 	case StartStateInitialize:
 		if preStarter, isPreStarter := starter.(interface {

adapter/outbound/adapter.go

@@ -5,35 +5,35 @@ import (
 )
 
 type Adapter struct {
-	protocol     string
+	outboundType string
+	outboundTag  string
 	network      []string
-	tag          string
 	dependencies []string
 }
 
-func NewAdapter(protocol string, network []string, tag string, dependencies []string) Adapter {
+func NewAdapter(outboundType string, outboundTag string, network []string, dependencies []string) Adapter {
 	return Adapter{
-		protocol:     protocol,
+		outboundType: outboundType,
+		outboundTag:  outboundTag,
 		network:      network,
-		tag:          tag,
 		dependencies: dependencies,
 	}
 }
 
-func NewAdapterWithDialerOptions(protocol string, network []string, tag string, dialOptions option.DialerOptions) Adapter {
+func NewAdapterWithDialerOptions(outboundType string, outboundTag string, network []string, dialOptions option.DialerOptions) Adapter {
 	var dependencies []string
 	if dialOptions.Detour != "" {
 		dependencies = []string{dialOptions.Detour}
 	}
-	return NewAdapter(protocol, network, tag, dependencies)
+	return NewAdapter(outboundType, outboundTag, network, dependencies)
 }
 
 func (a *Adapter) Type() string {
-	return a.protocol
+	return a.outboundType
 }
 
 func (a *Adapter) Tag() string {
-	return a.tag
+	return a.outboundTag
 }
 
 func (a *Adapter) Network() []string {

adapter/outbound/manager.go

@@ -21,6 +21,7 @@ var _ adapter.OutboundManager = (*Manager)(nil)
 type Manager struct {
 	logger                  log.ContextLogger
 	registry                adapter.OutboundRegistry
+	endpoint                adapter.EndpointManager
 	defaultTag              string
 	access                  sync.Mutex
 	started                 bool
@@ -32,10 +33,11 @@ type Manager struct {
 	defaultOutboundFallback adapter.Outbound
 }
 
-func NewManager(logger logger.ContextLogger, registry adapter.OutboundRegistry, defaultTag string) *Manager {
+func NewManager(logger logger.ContextLogger, registry adapter.OutboundRegistry, endpoint adapter.EndpointManager, defaultTag string) *Manager {
 	return &Manager{
 		logger:        logger,
 		registry:      registry,
+		endpoint:      endpoint,
 		defaultTag:    defaultTag,
 		outboundByTag: make(map[string]adapter.Outbound),
 		dependByTag:   make(map[string][]string),
@@ -56,7 +58,14 @@ func (m *Manager) Start(stage adapter.StartStage) error {
 	outbounds := m.outbounds
 	m.access.Unlock()
 	if stage == adapter.StartStateStart {
-		return m.startOutbounds(outbounds)
+		if m.defaultTag != "" && m.defaultOutbound == nil {
+			defaultEndpoint, loaded := m.endpoint.Get(m.defaultTag)
+			if !loaded {
+				return E.New("default outbound not found: ", m.defaultTag)
+			}
+			m.defaultOutbound = defaultEndpoint
+		}
+		return m.startOutbounds(append(outbounds, common.Map(m.endpoint.Endpoints(), func(it adapter.Endpoint) adapter.Outbound { return it })...))
 	} else {
 		for _, outbound := range outbounds {
 			err := adapter.LegacyStart(outbound, stage)
@@ -87,7 +96,14 @@ func (m *Manager) startOutbounds(outbounds []adapter.Outbound) error {
 			}
 			started[outboundTag] = true
 			canContinue = true
-			if starter, isStarter := outboundToStart.(interface {
+			if starter, isStarter := outboundToStart.(adapter.Lifecycle); isStarter {
+				monitor.Start("start outbound/", outboundToStart.Type(), "[", outboundTag, "]")
+				err := starter.Start(adapter.StartStateStart)
+				monitor.Finish()
+				if err != nil {
+					return E.Cause(err, "start outbound/", outboundToStart.Type(), "[", outboundTag, "]")
+				}
+			} else if starter, isStarter := outboundToStart.(interface {
 				Start() error
 			}); isStarter {
 				monitor.Start("start outbound/", outboundToStart.Type(), "[", outboundTag, "]")
@@ -160,9 +176,12 @@ func (m *Manager) Outbounds() []adapter.Outbound {
 
 func (m *Manager) Outbound(tag string) (adapter.Outbound, bool) {
 	m.access.Lock()
-	defer m.access.Unlock()
 	outbound, found := m.outboundByTag[tag]
-	return outbound, found
+	m.access.Unlock()
+	if found {
+		return outbound, true
+	}
+	return m.endpoint.Get(tag)
 }
 
 func (m *Manager) Default() adapter.Outbound {

box.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/inbound"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	"github.com/sagernet/sing-box/common/dialer"
@@ -36,6 +37,7 @@ type Box struct {
 	logFactory log.Factory
 	logger     log.ContextLogger
 	network    *route.NetworkManager
+	endpoint   *endpoint.Manager
 	inbound    *inbound.Manager
 	outbound   *outbound.Manager
 	connection *route.ConnectionManager
@@ -54,6 +56,7 @@ func Context(
 	ctx context.Context,
 	inboundRegistry adapter.InboundRegistry,
 	outboundRegistry adapter.OutboundRegistry,
+	endpointRegistry adapter.EndpointRegistry,
 ) context.Context {
 	if service.FromContext[option.InboundOptionsRegistry](ctx) == nil ||
 		service.FromContext[adapter.InboundRegistry](ctx) == nil {
@@ -65,6 +68,11 @@ func Context(
 		ctx = service.ContextWith[option.OutboundOptionsRegistry](ctx, outboundRegistry)
 		ctx = service.ContextWith[adapter.OutboundRegistry](ctx, outboundRegistry)
 	}
+	if service.FromContext[option.EndpointOptionsRegistry](ctx) == nil ||
+		service.FromContext[adapter.EndpointRegistry](ctx) == nil {
+		ctx = service.ContextWith[option.EndpointOptionsRegistry](ctx, endpointRegistry)
+		ctx = service.ContextWith[adapter.EndpointRegistry](ctx, endpointRegistry)
+	}
 	return ctx
 }
 
@@ -76,12 +84,16 @@ func New(options Options) (*Box, error) {
 	}
 	ctx = service.ContextWithDefaultRegistry(ctx)
 
+	endpointRegistry := service.FromContext[adapter.EndpointRegistry](ctx)
 	inboundRegistry := service.FromContext[adapter.InboundRegistry](ctx)
+	outboundRegistry := service.FromContext[adapter.OutboundRegistry](ctx)
+
+	if endpointRegistry == nil {
+		return nil, E.New("missing endpoint registry in context")
+	}
 	if inboundRegistry == nil {
 		return nil, E.New("missing inbound registry in context")
 	}
-
-	outboundRegistry := service.FromContext[adapter.OutboundRegistry](ctx)
 	if outboundRegistry == nil {
 		return nil, E.New("missing outbound registry in context")
 	}
@@ -119,8 +131,10 @@ func New(options Options) (*Box, error) {
 	}
 
 	routeOptions := common.PtrValueOrDefault(options.Route)
-	inboundManager := inbound.NewManager(logFactory.NewLogger("inbound"), inboundRegistry)
-	outboundManager := outbound.NewManager(logFactory.NewLogger("outbound"), outboundRegistry, routeOptions.Final)
+	endpointManager := endpoint.NewManager(logFactory.NewLogger("endpoint"), endpointRegistry)
+	inboundManager := inbound.NewManager(logFactory.NewLogger("inbound"), inboundRegistry, endpointManager)
+	outboundManager := outbound.NewManager(logFactory.NewLogger("outbound"), outboundRegistry, endpointManager, routeOptions.Final)
+	service.MustRegister[adapter.EndpointManager](ctx, endpointManager)
 	service.MustRegister[adapter.InboundManager](ctx, inboundManager)
 	service.MustRegister[adapter.OutboundManager](ctx, outboundManager)
 
@@ -135,6 +149,24 @@ func New(options Options) (*Box, error) {
 	if err != nil {
 		return nil, E.Cause(err, "initialize router")
 	}
+	for i, endpointOptions := range options.Endpoints {
+		var tag string
+		if endpointOptions.Tag != "" {
+			tag = endpointOptions.Tag
+		} else {
+			tag = F.ToString(i)
+		}
+		err = endpointManager.Create(ctx,
+			router,
+			logFactory.NewLogger(F.ToString("endpoint/", endpointOptions.Type, "[", tag, "]")),
+			tag,
+			endpointOptions.Type,
+			endpointOptions.Options,
+		)
+		if err != nil {
+			return nil, E.Cause(err, "initialize inbound[", i, "]")
+		}
+	}
 	for i, inboundOptions := range options.Inbounds {
 		var tag string
 		if inboundOptions.Tag != "" {
@@ -241,6 +273,7 @@ func New(options Options) (*Box, error) {
 	}
 	return &Box{
 		network:    networkManager,
+		endpoint:   endpointManager,
 		inbound:    inboundManager,
 		outbound:   outboundManager,
 		connection: connectionManager,
@@ -303,7 +336,7 @@ func (s *Box) preStart() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateInitialize, s.network, s.router, s.outbound, s.inbound)
+	err = adapter.Start(adapter.StartStateInitialize, s.network, s.router, s.outbound, s.inbound, s.endpoint)
 	if err != nil {
 		return err
 	}
@@ -327,7 +360,11 @@ func (s *Box) start() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStatePostStart, s.outbound, s.network, s.router, s.inbound)
+	err = adapter.Start(adapter.StartStateStart, s.endpoint)
+	if err != nil {
+		return err
+	}
+	err = adapter.Start(adapter.StartStatePostStart, s.outbound, s.network, s.router, s.inbound, s.endpoint)
 	if err != nil {
 		return err
 	}
@@ -335,7 +372,7 @@ func (s *Box) start() error {
 	if err != nil {
 		return err
 	}
-	err = adapter.Start(adapter.StartStateStarted, s.network, s.router, s.outbound, s.inbound)
+	err = adapter.Start(adapter.StartStateStarted, s.network, s.router, s.outbound, s.inbound, s.endpoint)
 	if err != nil {
 		return err
 	}

cmd/sing-box/cmd.go

@@ -69,5 +69,5 @@ func preRun(cmd *cobra.Command, args []string) {
 		configPaths = append(configPaths, "config.json")
 	}
 	globalCtx = service.ContextWith(globalCtx, deprecated.NewStderrManager(log.StdLogger()))
-	globalCtx = box.Context(globalCtx, include.InboundRegistry(), include.OutboundRegistry())
+	globalCtx = box.Context(globalCtx, include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry())
 }

common/dialer/default.go

@@ -279,7 +279,7 @@ func (d *DefaultDialer) ListenSerialInterfacePacket(ctx context.Context, destina
 }
 
 func (d *DefaultDialer) ListenPacketCompat(network, address string) (net.PacketConn, error) {
-	return trackPacketConn(d.listenSerialInterfacePacket(context.Background(), d.udpListener, network, address, d.networkStrategy, d.networkType, d.fallbackNetworkType, d.networkFallbackDelay))
+	return trackPacketConn(d.udpListener.ListenPacket(context.Background(), network, address))
 }
 
 func trackConn(conn net.Conn, err error) (net.Conn, error) {

experimental/deprecated/constants.go

@@ -109,6 +109,15 @@ var OptionDestinationOverrideFields = Note{
 	MigrationLink:     "https://sing-box.sagernet.org/migration/#migrate-destination-override-fields-to-route-options",
 }
 
+var OptionWireGuardOutbound = Note{
+	Name:              "wireguard-outbound",
+	Description:       "legacy wireguard outbound",
+	DeprecatedVersion: "1.11.0",
+	ScheduledVersion:  "1.13.0",
+	EnvName:           "WIREGUARD_OUTBOUND",
+	MigrationLink:     "https://sing-box.sagernet.org/migration/#migrate-wireguard-outbound-to-endpoint",
+}
+
 var Options = []Note{
 	OptionBadMatchSource,
 	OptionGEOIP,
@@ -117,4 +126,5 @@ var Options = []Note{
 	OptionSpecialOutbounds,
 	OptionInboundOptions,
 	OptionDestinationOverrideFields,
+	OptionWireGuardOutbound,
 }

experimental/libbox/config.go

@@ -30,7 +30,7 @@ func parseConfig(ctx context.Context, configContent string) (option.Options, err
 }
 
 func CheckConfig(configContent string) error {
-	ctx := box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry())
+	ctx := box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry())
 	options, err := parseConfig(ctx, configContent)
 	if err != nil {
 		return err
@@ -131,7 +131,7 @@ func (s *platformInterfaceStub) SendNotification(notification *platform.Notifica
 }
 
 func FormatConfig(configContent string) (string, error) {
-	options, err := parseConfig(box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry()), configContent)
+	options, err := parseConfig(box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry()), configContent)
 	if err != nil {
 		return "", err
 	}

experimental/libbox/service.go

@@ -44,7 +44,7 @@ type BoxService struct {
 }
 
 func NewService(configContent string, platformInterface PlatformInterface) (*BoxService, error) {
-	ctx := box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry())
+	ctx := box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry())
 	ctx = filemanager.WithDefault(ctx, sWorkingPath, sTempPath, sUserID, sGroupID)
 	service.MustRegister[deprecated.Manager](ctx, new(deprecatedManager))
 	options, err := parseConfig(ctx, configContent)

go.mod

@@ -36,7 +36,7 @@ require (
 	github.com/sagernet/sing-vmess v0.1.12
 	github.com/sagernet/smux v0.0.0-20231208180855-7041f6ea79e7
 	github.com/sagernet/utls v1.6.7
-	github.com/sagernet/wireguard-go v0.0.0-20231215174105-89dec3b2f3e8
+	github.com/sagernet/wireguard-go v0.0.1-beta.4
 	github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854
 	github.com/spf13/cobra v1.8.1
 	github.com/stretchr/testify v1.9.0
@@ -92,6 +92,7 @@ require (
 	golang.org/x/text v0.20.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
 	golang.org/x/tools v0.24.0 // indirect
+	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de // indirect
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

go.sum

@@ -132,8 +132,8 @@ github.com/sagernet/smux v0.0.0-20231208180855-7041f6ea79e7 h1:DImB4lELfQhplLTxe
 github.com/sagernet/smux v0.0.0-20231208180855-7041f6ea79e7/go.mod h1:FP9X2xjT/Az1EsG/orYYoC+5MojWnuI7hrffz8fGwwo=
 github.com/sagernet/utls v1.6.7 h1:Ep3+aJ8FUGGta+II2IEVNUc3EDhaRCZINWkj/LloIA8=
 github.com/sagernet/utls v1.6.7/go.mod h1:Uua1TKO/FFuAhLr9rkaVnnrTmmiItzDjv1BUb2+ERwM=
-github.com/sagernet/wireguard-go v0.0.0-20231215174105-89dec3b2f3e8 h1:R0OMYAScomNAVpTfbHFpxqJpvwuhxSRi+g6z7gZhABs=
-github.com/sagernet/wireguard-go v0.0.0-20231215174105-89dec3b2f3e8/go.mod h1:K4J7/npM+VAMUeUmTa2JaA02JmyheP0GpRBOUvn3ecc=
+github.com/sagernet/wireguard-go v0.0.1-beta.4 h1:8uyM5fxfEXdu4RH05uOK+v25i3lTNdCYMPSAUJ14FnI=
+github.com/sagernet/wireguard-go v0.0.1-beta.4/go.mod h1:jGXij2Gn2wbrWuYNUmmNhf1dwcZtvyAvQoe8Xd8MbUo=
 github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854 h1:6uUiZcDRnZSAegryaUGwPC/Fj13JSHwiTftrXhMmYOc=
 github.com/sagernet/ws v0.0.0-20231204124109-acfe8907c854/go.mod h1:LtfoSK3+NG57tvnVEHgcuBW9ujgE8enPSgzgwStwCAA=
 github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
@@ -195,6 +195,8 @@ golang.org/x/time v0.7.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.24.0 h1:J1shsA93PJUEVaUSaay7UXAyE8aimq3GW0pjlolpa24=
 golang.org/x/tools v0.24.0/go.mod h1:YhNqVBIfWHdzvTLs0d8LCuMhkKUgSUKldakyV7W/WDQ=
+golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
+golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6 h1:CawjfCvYQH2OU3/TnxLx97WDSUDRABfT18pCOYwc2GE=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6/go.mod h1:3rxYc4HtVcSG9gVaTs2GEBdehh+sYPOwKtyUWEOTb80=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20240227224415-6ceb2ff114de h1:cZGRis4/ot9uVm639a+rHCUaG0JJHEsdyzSQTMX+suY=

include/registry.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/inbound"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	C "github.com/sagernet/sing-box/constant"
@@ -82,6 +83,14 @@ func OutboundRegistry() *outbound.Registry {
 	return registry
 }
 
+func EndpointRegistry() *endpoint.Registry {
+	registry := endpoint.NewRegistry()
+
+	registerWireGuardEndpoint(registry)
+
+	return registry
+}
+
 func registerStubForRemovedInbounds(registry *inbound.Registry) {
 	inbound.Register[option.ShadowsocksInboundOptions](registry, C.TypeShadowsocksR, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowsocksInboundOptions) (adapter.Inbound, error) {
 		return nil, E.New("ShadowsocksR is deprecated and removed in sing-box 1.6.0")

include/wireguard.go

@@ -3,6 +3,7 @@
 package include
 
 import (
+	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	"github.com/sagernet/sing-box/protocol/wireguard"
 )
@@ -10,3 +11,7 @@ import (
 func registerWireGuardOutbound(registry *outbound.Registry) {
 	wireguard.RegisterOutbound(registry)
 }
+
+func registerWireGuardEndpoint(registry *endpoint.Registry) {
+	wireguard.RegisterEndpoint(registry)
+}

include/wireguard_stub.go

@@ -6,6 +6,7 @@ import (
 	"context"
 
 	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/endpoint"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
@@ -14,7 +15,13 @@ import (
 )
 
 func registerWireGuardOutbound(registry *outbound.Registry) {
-	outbound.Register[option.WireGuardOutboundOptions](registry, C.TypeWireGuard, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.WireGuardOutboundOptions) (adapter.Outbound, error) {
+	outbound.Register[option.LegacyWireGuardOutboundOptions](registry, C.TypeWireGuard, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.LegacyWireGuardOutboundOptions) (adapter.Outbound, error) {
+		return nil, E.New(`WireGuard is not included in this build, rebuild with -tags with_wireguard`)
+	})
+}
+
+func registerWireGuardEndpoint(registry *endpoint.Registry) {
+	endpoint.Register[option.WireGuardEndpointOptions](registry, C.TypeWireGuard, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.WireGuardEndpointOptions) (adapter.Endpoint, error) {
 		return nil, E.New(`WireGuard is not included in this build, rebuild with -tags with_wireguard`)
 	})
 }

option/endpoint.go

@@ -0,0 +1,47 @@
+package option
+
+import (
+	"context"
+
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/json"
+	"github.com/sagernet/sing/common/json/badjson"
+	"github.com/sagernet/sing/service"
+)
+
+type EndpointOptionsRegistry interface {
+	CreateOptions(endpointType string) (any, bool)
+}
+
+type _Endpoint struct {
+	Type    string `json:"type"`
+	Tag     string `json:"tag,omitempty"`
+	Options any    `json:"-"`
+}
+
+type Endpoint _Endpoint
+
+func (h *Endpoint) MarshalJSONContext(ctx context.Context) ([]byte, error) {
+	return badjson.MarshallObjectsContext(ctx, (*_Endpoint)(h), h.Options)
+}
+
+func (h *Endpoint) UnmarshalJSONContext(ctx context.Context, content []byte) error {
+	err := json.UnmarshalContext(ctx, content, (*_Endpoint)(h))
+	if err != nil {
+		return err
+	}
+	registry := service.FromContext[EndpointOptionsRegistry](ctx)
+	if registry == nil {
+		return E.New("missing Endpoint fields registry in context")
+	}
+	options, loaded := registry.CreateOptions(h.Type)
+	if !loaded {
+		return E.New("unknown inbound type: ", h.Type)
+	}
+	err = badjson.UnmarshallExcludedContext(ctx, content, (*_Endpoint)(h), options)
+	if err != nil {
+		return err
+	}
+	h.Options = options
+	return nil
+}

option/inbound.go

@@ -28,7 +28,7 @@ func (h *Inbound) MarshalJSONContext(ctx context.Context) ([]byte, error) {
 }
 
 func (h *Inbound) UnmarshalJSONContext(ctx context.Context, content []byte) error {
-	err := json.Unmarshal(content, (*_Inbound)(h))
+	err := json.UnmarshalContext(ctx, content, (*_Inbound)(h))
 	if err != nil {
 		return err
 	}

option/options.go

@@ -13,6 +13,7 @@ type _Options struct {
 	Log          *LogOptions          `json:"log,omitempty"`
 	DNS          *DNSOptions          `json:"dns,omitempty"`
 	NTP          *NTPOptions          `json:"ntp,omitempty"`
+	Endpoints    []Endpoint           `json:"endpoints,omitempty"`
 	Inbounds     []Inbound            `json:"inbounds,omitempty"`
 	Outbounds    []Outbound           `json:"outbounds,omitempty"`
 	Route        *RouteOptions        `json:"route,omitempty"`

option/outbound.go

@@ -30,7 +30,7 @@ func (h *Outbound) MarshalJSONContext(ctx context.Context) ([]byte, error) {
 }
 
 func (h *Outbound) UnmarshalJSONContext(ctx context.Context, content []byte) error {
-	err := json.Unmarshal(content, (*_Outbound)(h))
+	err := json.UnmarshalContext(ctx, content, (*_Outbound)(h))
 	if err != nil {
 		return err
 	}

option/wireguard.go

@@ -6,14 +6,38 @@ import (
 	"github.com/sagernet/sing/common/json/badoption"
 )
 
-type WireGuardOutboundOptions struct {
+type WireGuardEndpointOptions struct {
+	System     bool                             `json:"system,omitempty"`
+	Name       string                           `json:"name,omitempty"`
+	MTU        uint32                           `json:"mtu,omitempty"`
+	GSO        bool                             `json:"gso,omitempty"`
+	Address    badoption.Listable[netip.Prefix] `json:"address"`
+	PrivateKey string                           `json:"private_key"`
+	ListenPort uint16                           `json:"listen_port,omitempty"`
+	Peers      []WireGuardPeer                  `json:"peers,omitempty"`
+	UDPTimeout UDPTimeoutCompat                 `json:"udp_timeout,omitempty"`
+	Workers    int                              `json:"workers,omitempty"`
+	DialerOptions
+}
+
+type WireGuardPeer struct {
+	Address                     string                           `json:"address,omitempty"`
+	Port                        uint16                           `json:"port,omitempty"`
+	PublicKey                   string                           `json:"public_key,omitempty"`
+	PreSharedKey                string                           `json:"pre_shared_key,omitempty"`
+	AllowedIPs                  badoption.Listable[netip.Prefix] `json:"allowed_ips,omitempty"`
+	PersistentKeepaliveInterval uint16                           `json:"persistent_keepalive_interval,omitempty"`
+	Reserved                    []uint8                          `json:"reserved,omitempty"`
+}
+
+type LegacyWireGuardOutboundOptions struct {
 	DialerOptions
 	SystemInterface bool                             `json:"system_interface,omitempty"`
 	GSO             bool                             `json:"gso,omitempty"`
 	InterfaceName   string                           `json:"interface_name,omitempty"`
 	LocalAddress    badoption.Listable[netip.Prefix] `json:"local_address"`
 	PrivateKey      string                           `json:"private_key"`
-	Peers           []WireGuardPeer                  `json:"peers,omitempty"`
+	Peers           []LegacyWireGuardPeer            `json:"peers,omitempty"`
 	ServerOptions
 	PeerPublicKey string      `json:"peer_public_key"`
 	PreSharedKey  string      `json:"pre_shared_key,omitempty"`
@@ -23,10 +47,10 @@ type WireGuardOutboundOptions struct {
 	Network       NetworkList `json:"network,omitempty"`
 }
 
-type WireGuardPeer struct {
+type LegacyWireGuardPeer struct {
 	ServerOptions
-	PublicKey    string                     `json:"public_key,omitempty"`
-	PreSharedKey string                     `json:"pre_shared_key,omitempty"`
-	AllowedIPs   badoption.Listable[string] `json:"allowed_ips,omitempty"`
-	Reserved     []uint8                    `json:"reserved,omitempty"`
+	PublicKey    string                           `json:"public_key,omitempty"`
+	PreSharedKey string                           `json:"pre_shared_key,omitempty"`
+	AllowedIPs   badoption.Listable[netip.Prefix] `json:"allowed_ips,omitempty"`
+	Reserved     []uint8                          `json:"reserved,omitempty"`
 }

protocol/block/outbound.go

@@ -26,7 +26,7 @@ type Outbound struct {
 
 func New(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, _ option.StubOptions) (adapter.Outbound, error) {
 	return &Outbound{
-		Adapter: outbound.NewAdapter(C.TypeBlock, []string{N.NetworkTCP, N.NetworkUDP}, tag, nil),
+		Adapter: outbound.NewAdapter(C.TypeBlock, tag, []string{N.NetworkTCP, N.NetworkUDP}, nil),
 		logger:  logger,
 	}, nil
 }

protocol/direct/inbound.go

@@ -68,7 +68,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (i *Inbound) Start() error {
+func (i *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return i.listener.Start()
 }
 

protocol/direct/outbound.go

@@ -52,7 +52,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:              outbound.NewAdapterWithDialerOptions(C.TypeDirect, []string{N.NetworkTCP, N.NetworkUDP}, tag, options.DialerOptions),
+		Adapter:              outbound.NewAdapterWithDialerOptions(C.TypeDirect, tag, []string{N.NetworkTCP, N.NetworkUDP}, options.DialerOptions),
 		logger:               logger,
 		domainStrategy:       dns.DomainStrategy(options.DomainStrategy),
 		fallbackDelay:        time.Duration(options.FallbackDelay),

protocol/dns/outbound.go

@@ -28,7 +28,7 @@ type Outbound struct {
 
 func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.StubOptions) (adapter.Outbound, error) {
 	return &Outbound{
-		Adapter: outbound.NewAdapter(C.TypeDNS, []string{N.NetworkTCP, N.NetworkUDP}, tag, nil),
+		Adapter: outbound.NewAdapter(C.TypeDNS, tag, []string{N.NetworkTCP, N.NetworkUDP}, nil),
 		router:  router,
 		logger:  logger,
 	}, nil

protocol/group/selector.go

@@ -38,7 +38,7 @@ type Selector struct {
 
 func NewSelector(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SelectorOutboundOptions) (adapter.Outbound, error) {
 	outbound := &Selector{
-		Adapter:                      outbound.NewAdapter(C.TypeSelector, nil, tag, options.Outbounds),
+		Adapter:                      outbound.NewAdapter(C.TypeSelector, tag, nil, options.Outbounds),
 		ctx:                          ctx,
 		outboundManager:              service.FromContext[adapter.OutboundManager](ctx),
 		logger:                       logger,

protocol/group/urltest.go

@@ -49,7 +49,7 @@ type URLTest struct {
 
 func NewURLTest(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.URLTestOutboundOptions) (adapter.Outbound, error) {
 	outbound := &URLTest{
-		Adapter:                      outbound.NewAdapter(C.TypeURLTest, []string{N.NetworkTCP, N.NetworkUDP}, tag, options.Outbounds),
+		Adapter:                      outbound.NewAdapter(C.TypeURLTest, tag, []string{N.NetworkTCP, N.NetworkUDP}, options.Outbounds),
 		ctx:                          ctx,
 		router:                       router,
 		outboundManager:              service.FromContext[adapter.OutboundManager](ctx),

protocol/http/inbound.go

@@ -61,7 +61,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/http/outbound.go

@@ -39,7 +39,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	return &Outbound{
-		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHTTP, []string{N.NetworkTCP}, tag, options.DialerOptions),
+		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHTTP, tag, []string{N.NetworkTCP}, options.DialerOptions),
 		logger:  logger,
 		client: sHTTP.NewClient(sHTTP.Options{
 			Dialer:   detour,

protocol/hysteria/inbound.go

@@ -160,7 +160,10 @@ func (h *Inbound) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	h.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/hysteria/outbound.go

@@ -95,7 +95,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	return &Outbound{
-		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHysteria, networkList, tag, options.DialerOptions),
+		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHysteria, tag, networkList, options.DialerOptions),
 		logger:  logger,
 		client:  client,
 	}, nil

protocol/hysteria2/inbound.go

@@ -171,7 +171,10 @@ func (h *Inbound) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	h.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/hysteria2/outbound.go

@@ -81,7 +81,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	return &Outbound{
-		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHysteria2, networkList, tag, options.DialerOptions),
+		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHysteria2, tag, networkList, options.DialerOptions),
 		logger:  logger,
 		client:  client,
 	}, nil

protocol/mixed/inbound.go

@@ -54,7 +54,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/naive/inbound.go

@@ -78,7 +78,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (n *Inbound) Start() error {
+func (n *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	var tlsConfig *tls.STDConfig
 	if n.tlsConfig != nil {
 		err := n.tlsConfig.Start()

protocol/redirect/redirect.go

@@ -42,7 +42,10 @@ func NewRedirect(ctx context.Context, router adapter.Router, logger log.ContextL
 	return redirect, nil
 }
 
-func (h *Redirect) Start() error {
+func (h *Redirect) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/redirect/tproxy.go

@@ -61,7 +61,10 @@ func NewTProxy(ctx context.Context, router adapter.Router, logger log.ContextLog
 	return tproxy, nil
 }
 
-func (t *TProxy) Start() error {
+func (t *TProxy) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	err := t.listener.Start()
 	if err != nil {
 		return err

protocol/shadowsocks/inbound.go

@@ -93,7 +93,10 @@ func newInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, err
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/shadowsocks/inbound_multi.go

@@ -101,7 +101,10 @@ func newMultiInbound(ctx context.Context, router adapter.Router, logger log.Cont
 	return inbound, err
 }
 
-func (h *MultiInbound) Start() error {
+func (h *MultiInbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/shadowsocks/inbound_relay.go

@@ -86,7 +86,10 @@ func newRelayInbound(ctx context.Context, router adapter.Router, logger log.Cont
 	return inbound, err
 }
 
-func (h *RelayInbound) Start() error {
+func (h *RelayInbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/shadowsocks/outbound.go

@@ -49,7 +49,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeShadowsocks, options.Network.Build(), tag, options.DialerOptions),
+		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeShadowsocks, tag, options.Network.Build(), options.DialerOptions),
 		logger:     logger,
 		dialer:     outboundDialer,
 		method:     method,

protocol/shadowtls/inbound.go

@@ -90,7 +90,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/shadowtls/outbound.go

@@ -29,7 +29,7 @@ type Outbound struct {
 
 func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowTLSOutboundOptions) (adapter.Outbound, error) {
 	outbound := &Outbound{
-		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeShadowTLS, []string{N.NetworkTCP}, tag, options.DialerOptions),
+		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeShadowTLS, tag, []string{N.NetworkTCP}, options.DialerOptions),
 	}
 	if options.TLS == nil || !options.TLS.Enabled {
 		return nil, C.ErrTLSRequired

protocol/socks/inbound.go

@@ -50,7 +50,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	return h.listener.Start()
 }
 

protocol/socks/outbound.go

@@ -50,7 +50,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeSOCKS, options.Network.Build(), tag, options.DialerOptions),
+		Adapter: outbound.NewAdapterWithDialerOptions(C.TypeSOCKS, tag, options.Network.Build(), options.DialerOptions),
 		router:  router,
 		logger:  logger,
 		client:  socks.NewClient(outboundDialer, options.ServerOptions.Build(), version, options.Username, options.Password),

protocol/ssh/outbound.go

@@ -54,7 +54,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:           outbound.NewAdapterWithDialerOptions(C.TypeSSH, []string{N.NetworkTCP}, tag, options.DialerOptions),
+		Adapter:           outbound.NewAdapterWithDialerOptions(C.TypeSSH, tag, []string{N.NetworkTCP}, options.DialerOptions),
 		ctx:               ctx,
 		logger:            logger,
 		dialer:            outboundDialer,

protocol/tor/outbound.go

@@ -80,7 +80,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	return &Outbound{
-		Adapter:   outbound.NewAdapterWithDialerOptions(C.TypeTor, []string{N.NetworkTCP}, tag, options.DialerOptions),
+		Adapter:   outbound.NewAdapterWithDialerOptions(C.TypeTor, tag, []string{N.NetworkTCP}, options.DialerOptions),
 		ctx:       ctx,
 		logger:    logger,
 		proxy:     NewProxyListener(ctx, logger, outboundDialer),

protocol/trojan/inbound.go

@@ -110,7 +110,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/trojan/outbound.go

@@ -43,7 +43,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeTrojan, options.Network.Build(), tag, options.DialerOptions),
+		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeTrojan, tag, options.Network.Build(), options.DialerOptions),
 		logger:     logger,
 		dialer:     outboundDialer,
 		serverAddr: options.ServerOptions.Build(),

protocol/tuic/inbound.go

@@ -142,7 +142,10 @@ func (h *Inbound) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn,
 	h.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/tuic/outbound.go

@@ -80,7 +80,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	return &Outbound{
-		Adapter:   outbound.NewAdapterWithDialerOptions(C.TypeTUIC, options.Network.Build(), tag, options.DialerOptions),
+		Adapter:   outbound.NewAdapterWithDialerOptions(C.TypeTUIC, tag, options.Network.Build(), options.DialerOptions),
 		logger:    logger,
 		client:    client,
 		udpStream: options.UDPOverStream,

protocol/tun/inbound.go

@@ -300,104 +300,104 @@ func (t *Inbound) Tag() string {
 	return t.tag
 }
 
-func (t *Inbound) Start() error {
-	if C.IsAndroid && t.platformInterface == nil {
-		t.tunOptions.BuildAndroidRules(t.networkManager.PackageManager())
-	}
-	if t.tunOptions.Name == "" {
-		t.tunOptions.Name = tun.CalculateInterfaceName("")
-	}
-	var (
-		tunInterface tun.Tun
-		err          error
-	)
-	monitor := taskmonitor.New(t.logger, C.StartTimeout)
-	monitor.Start("open tun interface")
-	if t.platformInterface != nil {
-		tunInterface, err = t.platformInterface.OpenTun(&t.tunOptions, t.platformOptions)
-	} else {
-		tunInterface, err = tun.New(t.tunOptions)
-	}
-	monitor.Finish()
-	if err != nil {
-		return E.Cause(err, "configure tun interface")
-	}
-	t.logger.Trace("creating stack")
-	t.tunIf = tunInterface
-	var (
-		forwarderBindInterface bool
-		includeAllNetworks     bool
-	)
-	if t.platformInterface != nil {
-		forwarderBindInterface = true
-		includeAllNetworks = t.platformInterface.IncludeAllNetworks()
-	}
-	tunStack, err := tun.NewStack(t.stack, tun.StackOptions{
-		Context:                t.ctx,
-		Tun:                    tunInterface,
-		TunOptions:             t.tunOptions,
-		UDPTimeout:             t.udpTimeout,
-		Handler:                t,
-		Logger:                 t.logger,
-		ForwarderBindInterface: forwarderBindInterface,
-		InterfaceFinder:        t.networkManager.InterfaceFinder(),
-		IncludeAllNetworks:     includeAllNetworks,
-	})
-	if err != nil {
-		return err
-	}
-	t.tunStack = tunStack
-	t.logger.Info("started at ", t.tunOptions.Name)
-	return nil
-}
-
-func (t *Inbound) PostStart() error {
-	monitor := taskmonitor.New(t.logger, C.StartTimeout)
-	monitor.Start("starting tun stack")
-	err := t.tunStack.Start()
-	monitor.Finish()
-	if err != nil {
-		return E.Cause(err, "starting tun stack")
-	}
-	monitor.Start("starting tun interface")
-	err = t.tunIf.Start()
-	monitor.Finish()
-	if err != nil {
-		return E.Cause(err, "starting TUN interface")
-	}
-	if t.autoRedirect != nil {
-		t.routeAddressSet = common.FlatMap(t.routeRuleSet, adapter.RuleSet.ExtractIPSet)
-		for _, routeRuleSet := range t.routeRuleSet {
-			ipSets := routeRuleSet.ExtractIPSet()
-			if len(ipSets) == 0 {
-				t.logger.Warn("route_address_set: no destination IP CIDR rules found in rule-set: ", routeRuleSet.Name())
-			}
-			t.routeAddressSet = append(t.routeAddressSet, ipSets...)
+func (t *Inbound) Start(stage adapter.StartStage) error {
+	switch stage {
+	case adapter.StartStateStart:
+		if C.IsAndroid && t.platformInterface == nil {
+			t.tunOptions.BuildAndroidRules(t.networkManager.PackageManager())
 		}
-		t.routeExcludeAddressSet = common.FlatMap(t.routeExcludeRuleSet, adapter.RuleSet.ExtractIPSet)
-		for _, routeExcludeRuleSet := range t.routeExcludeRuleSet {
-			ipSets := routeExcludeRuleSet.ExtractIPSet()
-			if len(ipSets) == 0 {
-				t.logger.Warn("route_address_set: no destination IP CIDR rules found in rule-set: ", routeExcludeRuleSet.Name())
-			}
-			t.routeExcludeAddressSet = append(t.routeExcludeAddressSet, ipSets...)
+		if t.tunOptions.Name == "" {
+			t.tunOptions.Name = tun.CalculateInterfaceName("")
+		}
+		var (
+			tunInterface tun.Tun
+			err          error
+		)
+		monitor := taskmonitor.New(t.logger, C.StartTimeout)
+		monitor.Start("open tun interface")
+		if t.platformInterface != nil {
+			tunInterface, err = t.platformInterface.OpenTun(&t.tunOptions, t.platformOptions)
+		} else {
+			tunInterface, err = tun.New(t.tunOptions)
 		}
-		monitor.Start("initialize auto-redirect")
-		err := t.autoRedirect.Start()
 		monitor.Finish()
 		if err != nil {
-			return E.Cause(err, "auto-redirect")
+			return E.Cause(err, "configure tun interface")
 		}
-		for _, routeRuleSet := range t.routeRuleSet {
-			t.routeRuleSetCallback = append(t.routeRuleSetCallback, routeRuleSet.RegisterCallback(t.updateRouteAddressSet))
-			routeRuleSet.DecRef()
+		t.logger.Trace("creating stack")
+		t.tunIf = tunInterface
+		var (
+			forwarderBindInterface bool
+			includeAllNetworks     bool
+		)
+		if t.platformInterface != nil {
+			forwarderBindInterface = true
+			includeAllNetworks = t.platformInterface.IncludeAllNetworks()
 		}
-		for _, routeExcludeRuleSet := range t.routeExcludeRuleSet {
-			t.routeExcludeRuleSetCallback = append(t.routeExcludeRuleSetCallback, routeExcludeRuleSet.RegisterCallback(t.updateRouteAddressSet))
-			routeExcludeRuleSet.DecRef()
+		tunStack, err := tun.NewStack(t.stack, tun.StackOptions{
+			Context:                t.ctx,
+			Tun:                    tunInterface,
+			TunOptions:             t.tunOptions,
+			UDPTimeout:             t.udpTimeout,
+			Handler:                t,
+			Logger:                 t.logger,
+			ForwarderBindInterface: forwarderBindInterface,
+			InterfaceFinder:        t.networkManager.InterfaceFinder(),
+			IncludeAllNetworks:     includeAllNetworks,
+		})
+		if err != nil {
+			return err
+		}
+		t.tunStack = tunStack
+		t.logger.Info("started at ", t.tunOptions.Name)
+	case adapter.StartStatePostStart:
+		monitor := taskmonitor.New(t.logger, C.StartTimeout)
+		monitor.Start("starting tun stack")
+		err := t.tunStack.Start()
+		monitor.Finish()
+		if err != nil {
+			return E.Cause(err, "starting tun stack")
+		}
+		monitor.Start("starting tun interface")
+		err = t.tunIf.Start()
+		monitor.Finish()
+		if err != nil {
+			return E.Cause(err, "starting TUN interface")
+		}
+		if t.autoRedirect != nil {
+			t.routeAddressSet = common.FlatMap(t.routeRuleSet, adapter.RuleSet.ExtractIPSet)
+			for _, routeRuleSet := range t.routeRuleSet {
+				ipSets := routeRuleSet.ExtractIPSet()
+				if len(ipSets) == 0 {
+					t.logger.Warn("route_address_set: no destination IP CIDR rules found in rule-set: ", routeRuleSet.Name())
+				}
+				t.routeAddressSet = append(t.routeAddressSet, ipSets...)
+			}
+			t.routeExcludeAddressSet = common.FlatMap(t.routeExcludeRuleSet, adapter.RuleSet.ExtractIPSet)
+			for _, routeExcludeRuleSet := range t.routeExcludeRuleSet {
+				ipSets := routeExcludeRuleSet.ExtractIPSet()
+				if len(ipSets) == 0 {
+					t.logger.Warn("route_address_set: no destination IP CIDR rules found in rule-set: ", routeExcludeRuleSet.Name())
+				}
+				t.routeExcludeAddressSet = append(t.routeExcludeAddressSet, ipSets...)
+			}
+			monitor.Start("initialize auto-redirect")
+			err := t.autoRedirect.Start()
+			monitor.Finish()
+			if err != nil {
+				return E.Cause(err, "auto-redirect")
+			}
+			for _, routeRuleSet := range t.routeRuleSet {
+				t.routeRuleSetCallback = append(t.routeRuleSetCallback, routeRuleSet.RegisterCallback(t.updateRouteAddressSet))
+				routeRuleSet.DecRef()
+			}
+			for _, routeExcludeRuleSet := range t.routeExcludeRuleSet {
+				t.routeExcludeRuleSetCallback = append(t.routeExcludeRuleSetCallback, routeExcludeRuleSet.RegisterCallback(t.updateRouteAddressSet))
+				routeExcludeRuleSet.DecRef()
+			}
+			t.routeAddressSet = nil
+			t.routeExcludeAddressSet = nil
 		}
-		t.routeAddressSet = nil
-		t.routeExcludeAddressSet = nil
 	}
 	return nil
 }

protocol/vless/inbound.go

@@ -89,7 +89,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	if h.tlsConfig != nil {
 		err := h.tlsConfig.Start()
 		if err != nil {

protocol/vless/outbound.go

@@ -46,7 +46,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeVLESS, options.Network.Build(), tag, options.DialerOptions),
+		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeVLESS, tag, options.Network.Build(), options.DialerOptions),
 		logger:     logger,
 		dialer:     outboundDialer,
 		serverAddr: options.ServerOptions.Build(),

protocol/vmess/inbound.go

@@ -99,7 +99,10 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	return inbound, nil
 }
 
-func (h *Inbound) Start() error {
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStateStart {
+		return nil
+	}
 	err := h.service.Start()
 	if err != nil {
 		return err

protocol/vmess/outbound.go

@@ -46,7 +46,7 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		return nil, err
 	}
 	outbound := &Outbound{
-		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeVMess, options.Network.Build(), tag, options.DialerOptions),
+		Adapter:    outbound.NewAdapterWithDialerOptions(C.TypeVMess, tag, options.Network.Build(), options.DialerOptions),
 		logger:     logger,
 		dialer:     outboundDialer,
 		serverAddr: options.ServerOptions.Build(),

protocol/wireguard/endpoint.go

@@ -0,0 +1,211 @@
+package wireguard
+
+import (
+	"context"
+	"net"
+	"net/netip"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/endpoint"
+	"github.com/sagernet/sing-box/common/dialer"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/wireguard"
+	"github.com/sagernet/sing-dns"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/bufio"
+	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/service"
+)
+
+func RegisterEndpoint(registry *endpoint.Registry) {
+	endpoint.Register[option.WireGuardEndpointOptions](registry, C.TypeWireGuard, NewEndpoint)
+}
+
+var (
+	_ adapter.Endpoint                = (*Endpoint)(nil)
+	_ adapter.InterfaceUpdateListener = (*Endpoint)(nil)
+)
+
+type Endpoint struct {
+	endpoint.Adapter
+	ctx            context.Context
+	router         adapter.Router
+	logger         logger.ContextLogger
+	localAddresses []netip.Prefix
+	endpoint       *wireguard.Endpoint
+}
+
+func NewEndpoint(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.WireGuardEndpointOptions) (adapter.Endpoint, error) {
+	ep := &Endpoint{
+		Adapter:        endpoint.NewAdapterWithDialerOptions(C.TypeWireGuard, tag, []string{N.NetworkTCP, N.NetworkUDP}, options.DialerOptions),
+		ctx:            ctx,
+		router:         router,
+		logger:         logger,
+		localAddresses: options.Address,
+	}
+	if options.Detour == "" {
+		options.IsWireGuardListener = true
+	} else if options.GSO {
+		return nil, E.New("gso is conflict with detour")
+	}
+	outboundDialer, err := dialer.New(ctx, options.DialerOptions)
+	if err != nil {
+		return nil, err
+	}
+	wgEndpoint, err := wireguard.NewEndpoint(wireguard.EndpointOptions{
+		Context:    ctx,
+		Logger:     logger,
+		System:     options.System,
+		Handler:    ep,
+		UDPTimeout: time.Duration(options.UDPTimeout),
+		Dialer:     outboundDialer,
+		CreateDialer: func(interfaceName string) N.Dialer {
+			return common.Must1(dialer.NewDefault(service.FromContext[adapter.NetworkManager](ctx), option.DialerOptions{
+				BindInterface: interfaceName,
+			}))
+		},
+		Name:       options.Name,
+		MTU:        options.MTU,
+		GSO:        options.GSO,
+		Address:    options.Address,
+		PrivateKey: options.PrivateKey,
+		ListenPort: options.ListenPort,
+		ResolvePeer: func(domain string) (netip.Addr, error) {
+			endpointAddresses, lookupErr := router.Lookup(ctx, domain, dns.DomainStrategy(options.DomainStrategy))
+			if lookupErr != nil {
+				return netip.Addr{}, lookupErr
+			}
+			return endpointAddresses[0], nil
+		},
+		Peers: common.Map(options.Peers, func(it option.WireGuardPeer) wireguard.PeerOptions {
+			return wireguard.PeerOptions{
+				Endpoint:                    M.ParseSocksaddrHostPort(it.Address, it.Port),
+				PublicKey:                   it.PublicKey,
+				PreSharedKey:                it.PreSharedKey,
+				AllowedIPs:                  it.AllowedIPs,
+				PersistentKeepaliveInterval: it.PersistentKeepaliveInterval,
+				Reserved:                    it.Reserved,
+			}
+		}),
+		Workers: options.Workers,
+	})
+	if err != nil {
+		return nil, err
+	}
+	ep.endpoint = wgEndpoint
+	return ep, nil
+}
+
+func (w *Endpoint) Start(stage adapter.StartStage) error {
+	switch stage {
+	case adapter.StartStateStart:
+		return w.endpoint.Start(false)
+	case adapter.StartStatePostStart:
+		return w.endpoint.Start(true)
+	}
+	return nil
+}
+
+func (w *Endpoint) Close() error {
+	return w.endpoint.Close()
+}
+
+func (w *Endpoint) InterfaceUpdated() {
+	w.endpoint.BindUpdate()
+	return
+}
+
+func (w *Endpoint) PrepareConnection(network string, source M.Socksaddr, destination M.Socksaddr) error {
+	return w.router.PreMatch(adapter.InboundContext{
+		Inbound:     w.Tag(),
+		InboundType: w.Type(),
+		Network:     network,
+		Source:      source,
+		Destination: destination,
+	})
+}
+
+func (w *Endpoint) NewConnectionEx(ctx context.Context, conn net.Conn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
+	var metadata adapter.InboundContext
+	metadata.Inbound = w.Tag()
+	metadata.InboundType = w.Type()
+	metadata.Source = source
+	for _, localPrefix := range w.localAddresses {
+		if localPrefix.Contains(destination.Addr) {
+			metadata.OriginDestination = destination
+			if destination.Addr.Is4() {
+				destination.Addr = netip.AddrFrom4([4]uint8{127, 0, 0, 1})
+			} else {
+				destination.Addr = netip.IPv6Loopback()
+			}
+			break
+		}
+	}
+	metadata.Destination = destination
+	w.logger.InfoContext(ctx, "inbound connection from ", source)
+	w.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
+	w.router.RouteConnectionEx(ctx, conn, metadata, onClose)
+}
+
+func (w *Endpoint) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
+	var metadata adapter.InboundContext
+	metadata.Inbound = w.Tag()
+	metadata.InboundType = w.Type()
+	metadata.Source = source
+	metadata.Destination = destination
+	for _, localPrefix := range w.localAddresses {
+		if localPrefix.Contains(destination.Addr) {
+			metadata.OriginDestination = destination
+			if destination.Addr.Is4() {
+				metadata.Destination.Addr = netip.AddrFrom4([4]uint8{127, 0, 0, 1})
+			} else {
+				metadata.Destination.Addr = netip.IPv6Loopback()
+			}
+			conn = bufio.NewNATPacketConn(bufio.NewNetPacketConn(conn), metadata.OriginDestination, metadata.Destination)
+		}
+	}
+	w.logger.InfoContext(ctx, "inbound packet connection from ", source)
+	w.logger.InfoContext(ctx, "inbound packet connection to ", destination)
+	w.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
+}
+
+func (w *Endpoint) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	switch network {
+	case N.NetworkTCP:
+		w.logger.InfoContext(ctx, "outbound connection to ", destination)
+	case N.NetworkUDP:
+		w.logger.InfoContext(ctx, "outbound packet connection to ", destination)
+	}
+	if destination.IsFqdn() {
+		destinationAddresses, err := w.router.LookupDefault(ctx, destination.Fqdn)
+		if err != nil {
+			return nil, err
+		}
+		return N.DialSerial(ctx, w.endpoint, network, destination, destinationAddresses)
+	} else if !destination.Addr.IsValid() {
+		return nil, E.New("invalid destination: ", destination)
+	}
+	return w.endpoint.DialContext(ctx, network, destination)
+}
+
+func (w *Endpoint) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	w.logger.InfoContext(ctx, "outbound packet connection to ", destination)
+	if destination.IsFqdn() {
+		destinationAddresses, err := w.router.LookupDefault(ctx, destination.Fqdn)
+		if err != nil {
+			return nil, err
+		}
+		packetConn, _, err := N.ListenSerial(ctx, w.endpoint, destination, destinationAddresses)
+		if err != nil {
+			return nil, err
+		}
+		return packetConn, err
+	}
+	return w.endpoint.ListenPacket(ctx, destination)
+}

protocol/wireguard/outbound.go

@@ -2,231 +2,153 @@ package wireguard
 
 import (
 	"context"
-	"encoding/base64"
-	"encoding/hex"
-	"fmt"
 	"net"
 	"net/netip"
-	"strings"
 
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/adapter/outbound"
 	"github.com/sagernet/sing-box/common/dialer"
 	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/experimental/deprecated"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-box/transport/wireguard"
-	"github.com/sagernet/sing-tun"
+	"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/x/list"
 	"github.com/sagernet/sing/service"
-	"github.com/sagernet/sing/service/pause"
-	"github.com/sagernet/wireguard-go/conn"
-	"github.com/sagernet/wireguard-go/device"
 )
 
 func RegisterOutbound(registry *outbound.Registry) {
-	outbound.Register[option.WireGuardOutboundOptions](registry, C.TypeWireGuard, NewOutbound)
+	outbound.Register[option.LegacyWireGuardOutboundOptions](registry, C.TypeWireGuard, NewOutbound)
 }
 
-var _ adapter.InterfaceUpdateListener = (*Outbound)(nil)
+var (
+	_ adapter.Endpoint                = (*Endpoint)(nil)
+	_ adapter.InterfaceUpdateListener = (*Endpoint)(nil)
+)
 
 type Outbound struct {
 	outbound.Adapter
-	ctx           context.Context
-	router        adapter.Router
-	logger        logger.ContextLogger
-	workers       int
-	peers         []wireguard.PeerConfig
-	useStdNetBind bool
-	listener      N.Dialer
-	ipcConf       string
-
-	pauseManager  pause.Manager
-	pauseCallback *list.Element[pause.Callback]
-	bind          conn.Bind
-	device        *device.Device
-	tunDevice     wireguard.Device
+	ctx            context.Context
+	router         adapter.Router
+	logger         logger.ContextLogger
+	localAddresses []netip.Prefix
+	endpoint       *wireguard.Endpoint
 }
 
-func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.WireGuardOutboundOptions) (adapter.Outbound, error) {
+func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.LegacyWireGuardOutboundOptions) (adapter.Outbound, error) {
+	deprecated.Report(ctx, deprecated.OptionWireGuardOutbound)
 	outbound := &Outbound{
-		Adapter:      outbound.NewAdapterWithDialerOptions(C.TypeWireGuard, options.Network.Build(), tag, options.DialerOptions),
-		ctx:          ctx,
-		router:       router,
-		logger:       logger,
-		workers:      options.Workers,
-		pauseManager: service.FromContext[pause.Manager](ctx),
+		Adapter:        outbound.NewAdapterWithDialerOptions(C.TypeWireGuard, tag, []string{N.NetworkTCP, N.NetworkUDP}, options.DialerOptions),
+		ctx:            ctx,
+		router:         router,
+		logger:         logger,
+		localAddresses: options.LocalAddress,
 	}
-	peers, err := wireguard.ParsePeers(options)
-	if err != nil {
-		return nil, err
-	}
-	outbound.peers = peers
-	if len(options.LocalAddress) == 0 {
-		return nil, E.New("missing local address")
-	}
-	if options.GSO {
-		if options.GSO && options.Detour != "" {
-			return nil, E.New("gso is conflict with detour")
-		}
+	if options.Detour == "" {
 		options.IsWireGuardListener = true
-		outbound.useStdNetBind = true
+	} else if options.GSO {
+		return nil, E.New("gso is conflict with detour")
 	}
-	listener, err := dialer.New(ctx, options.DialerOptions)
+	outboundDialer, err := dialer.New(ctx, options.DialerOptions)
 	if err != nil {
 		return nil, err
 	}
-	outbound.listener = listener
-	var privateKey string
-	{
-		bytes, err := base64.StdEncoding.DecodeString(options.PrivateKey)
-		if err != nil {
-			return nil, E.Cause(err, "decode private key")
-		}
-		privateKey = hex.EncodeToString(bytes)
-	}
-	outbound.ipcConf = "private_key=" + privateKey
-	mtu := options.MTU
-	if mtu == 0 {
-		mtu = 1408
-	}
-	var wireTunDevice wireguard.Device
-	if !options.SystemInterface && tun.WithGVisor {
-		wireTunDevice, err = wireguard.NewStackDevice(options.LocalAddress, mtu)
-	} else {
-		wireTunDevice, err = wireguard.NewSystemDevice(service.FromContext[adapter.NetworkManager](ctx), options.InterfaceName, options.LocalAddress, mtu, options.GSO)
-	}
+	wgEndpoint, err := wireguard.NewEndpoint(wireguard.EndpointOptions{
+		Context: ctx,
+		Logger:  logger,
+		System:  options.SystemInterface,
+		Dialer:  outboundDialer,
+		CreateDialer: func(interfaceName string) N.Dialer {
+			return common.Must1(dialer.NewDefault(service.FromContext[adapter.NetworkManager](ctx), option.DialerOptions{
+				BindInterface: interfaceName,
+			}))
+		},
+		Name:       options.InterfaceName,
+		MTU:        options.MTU,
+		GSO:        options.GSO,
+		Address:    options.LocalAddress,
+		PrivateKey: options.PrivateKey,
+		ResolvePeer: func(domain string) (netip.Addr, error) {
+			endpointAddresses, lookupErr := router.Lookup(ctx, domain, dns.DomainStrategy(options.DomainStrategy))
+			if lookupErr != nil {
+				return netip.Addr{}, lookupErr
+			}
+			return endpointAddresses[0], nil
+		},
+		Peers: common.Map(options.Peers, func(it option.LegacyWireGuardPeer) wireguard.PeerOptions {
+			return wireguard.PeerOptions{
+				Endpoint:     it.ServerOptions.Build(),
+				PublicKey:    it.PublicKey,
+				PreSharedKey: it.PreSharedKey,
+				AllowedIPs:   it.AllowedIPs,
+				// PersistentKeepaliveInterval: time.Duration(it.PersistentKeepaliveInterval),
+				Reserved: it.Reserved,
+			}
+		}),
+		Workers: options.Workers,
+	})
 	if err != nil {
-		return nil, E.Cause(err, "create WireGuard device")
+		return nil, err
 	}
-	outbound.tunDevice = wireTunDevice
+	outbound.endpoint = wgEndpoint
 	return outbound, nil
 }
 
-func (w *Outbound) Start() error {
-	if common.Any(w.peers, func(peer wireguard.PeerConfig) bool {
-		return !peer.Endpoint.IsValid()
-	}) {
-		// wait for all outbounds to be started and continue in PortStart
-		return nil
-	}
-	return w.start()
-}
-
-func (w *Outbound) PostStart() error {
-	if common.All(w.peers, func(peer wireguard.PeerConfig) bool {
-		return peer.Endpoint.IsValid()
-	}) {
-		return nil
-	}
-	return w.start()
-}
-
-func (w *Outbound) start() error {
-	err := wireguard.ResolvePeers(w.ctx, w.router, w.peers)
-	if err != nil {
-		return err
-	}
-	var bind conn.Bind
-	if w.useStdNetBind {
-		bind = conn.NewStdNetBind(w.listener.(dialer.WireGuardListener))
-	} else {
-		var (
-			isConnect   bool
-			connectAddr netip.AddrPort
-			reserved    [3]uint8
-		)
-		peerLen := len(w.peers)
-		if peerLen == 1 {
-			isConnect = true
-			connectAddr = w.peers[0].Endpoint
-			reserved = w.peers[0].Reserved
-		}
-		bind = wireguard.NewClientBind(w.ctx, w.logger, w.listener, isConnect, connectAddr, reserved)
-	}
-	err = w.tunDevice.Start()
-	if err != nil {
-		return err
-	}
-	wgDevice := device.NewDevice(w.tunDevice, bind, &device.Logger{
-		Verbosef: func(format string, args ...interface{}) {
-			w.logger.Debug(fmt.Sprintf(strings.ToLower(format), args...))
-		},
-		Errorf: func(format string, args ...interface{}) {
-			w.logger.Error(fmt.Sprintf(strings.ToLower(format), args...))
-		},
-	}, w.workers)
-	ipcConf := w.ipcConf
-	for _, peer := range w.peers {
-		ipcConf += peer.GenerateIpcLines()
-	}
-	err = wgDevice.IpcSet(ipcConf)
-	if err != nil {
-		return E.Cause(err, "setup wireguard: \n", ipcConf)
-	}
-	w.device = wgDevice
-	w.pauseCallback = w.pauseManager.RegisterCallback(w.onPauseUpdated)
-	return nil
-}
-
-func (w *Outbound) Close() error {
-	if w.device != nil {
-		w.device.Close()
-	}
-	if w.pauseCallback != nil {
-		w.pauseManager.UnregisterCallback(w.pauseCallback)
+func (o *Outbound) Start(stage adapter.StartStage) error {
+	switch stage {
+	case adapter.StartStateStart:
+		return o.endpoint.Start(false)
+	case adapter.StartStatePostStart:
+		return o.endpoint.Start(true)
 	}
 	return nil
 }
 
-func (w *Outbound) InterfaceUpdated() {
-	w.device.BindUpdate()
+func (o *Outbound) Close() error {
+	return o.endpoint.Close()
+}
+
+func (o *Outbound) InterfaceUpdated() {
+	o.endpoint.BindUpdate()
 	return
 }
 
-func (w *Outbound) onPauseUpdated(event int) {
-	switch event {
-	case pause.EventDevicePaused:
-		w.device.Down()
-	case pause.EventDeviceWake:
-		w.device.Up()
-	}
-}
-
-func (w *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+func (o *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	switch network {
 	case N.NetworkTCP:
-		w.logger.InfoContext(ctx, "outbound connection to ", destination)
+		o.logger.InfoContext(ctx, "outbound connection to ", destination)
 	case N.NetworkUDP:
-		w.logger.InfoContext(ctx, "outbound packet connection to ", destination)
+		o.logger.InfoContext(ctx, "outbound packet connection to ", destination)
 	}
 	if destination.IsFqdn() {
-		destinationAddresses, err := w.router.LookupDefault(ctx, destination.Fqdn)
+		destinationAddresses, err := o.router.LookupDefault(ctx, destination.Fqdn)
 		if err != nil {
 			return nil, err
 		}
-		return N.DialSerial(ctx, w.tunDevice, network, destination, destinationAddresses)
+		return N.DialSerial(ctx, o.endpoint, network, destination, destinationAddresses)
+	} else if !destination.Addr.IsValid() {
+		return nil, E.New("invalid destination: ", destination)
 	}
-	return w.tunDevice.DialContext(ctx, network, destination)
+	return o.endpoint.DialContext(ctx, network, destination)
 }
 
-func (w *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
-	w.logger.InfoContext(ctx, "outbound packet connection to ", destination)
+func (o *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	o.logger.InfoContext(ctx, "outbound packet connection to ", destination)
 	if destination.IsFqdn() {
-		destinationAddresses, err := w.router.LookupDefault(ctx, destination.Fqdn)
+		destinationAddresses, err := o.router.LookupDefault(ctx, destination.Fqdn)
 		if err != nil {
 			return nil, err
 		}
-		packetConn, _, err := N.ListenSerial(ctx, w.tunDevice, destination, destinationAddresses)
+		packetConn, _, err := N.ListenSerial(ctx, o.endpoint, destination, destinationAddresses)
 		if err != nil {
 			return nil, err
 		}
 		return packetConn, err
 	}
-	return w.tunDevice.ListenPacket(ctx, destination)
+	return o.endpoint.ListenPacket(ctx, destination)
 }

route/network.go

@@ -41,17 +41,17 @@ type NetworkManager struct {
 	autoDetectInterface    bool
 	defaultOptions         adapter.NetworkOptions
 	autoRedirectOutputMark uint32
-
-	networkMonitor    tun.NetworkUpdateMonitor
-	interfaceMonitor  tun.DefaultInterfaceMonitor
-	packageManager    tun.PackageManager
-	powerListener     winpowrprof.EventListener
-	pauseManager      pause.Manager
-	platformInterface platform.Interface
-	inboundManager    adapter.InboundManager
-	outboundManager   adapter.OutboundManager
-	wifiState         adapter.WIFIState
-	started           bool
+	networkMonitor         tun.NetworkUpdateMonitor
+	interfaceMonitor       tun.DefaultInterfaceMonitor
+	packageManager         tun.PackageManager
+	powerListener          winpowrprof.EventListener
+	pauseManager           pause.Manager
+	platformInterface      platform.Interface
+	endpoint               adapter.EndpointManager
+	inbound                adapter.InboundManager
+	outbound               adapter.OutboundManager
+	wifiState              adapter.WIFIState
+	started                bool
 }
 
 func NewNetworkManager(ctx context.Context, logger logger.ContextLogger, routeOptions option.RouteOptions) (*NetworkManager, error) {
@@ -69,7 +69,9 @@ func NewNetworkManager(ctx context.Context, logger logger.ContextLogger, routeOp
 		},
 		pauseManager:      service.FromContext[pause.Manager](ctx),
 		platformInterface: service.FromContext[platform.Interface](ctx),
-		outboundManager:   service.FromContext[adapter.OutboundManager](ctx),
+		endpoint:          service.FromContext[adapter.EndpointManager](ctx),
+		inbound:           service.FromContext[adapter.InboundManager](ctx),
+		outbound:          service.FromContext[adapter.OutboundManager](ctx),
 	}
 	if C.NetworkStrategy(routeOptions.DefaultNetworkStrategy) != C.NetworkStrategyDefault {
 		if routeOptions.DefaultInterface != "" {
@@ -358,14 +360,21 @@ func (r *NetworkManager) WIFIState() adapter.WIFIState {
 func (r *NetworkManager) ResetNetwork() {
 	conntrack.Close()
 
-	for _, inbound := range r.inboundManager.Inbounds() {
+	for _, endpoint := range r.endpoint.Endpoints() {
+		listener, isListener := endpoint.(adapter.InterfaceUpdateListener)
+		if isListener {
+			listener.InterfaceUpdated()
+		}
+	}
+
+	for _, inbound := range r.inbound.Inbounds() {
 		listener, isListener := inbound.(adapter.InterfaceUpdateListener)
 		if isListener {
 			listener.InterfaceUpdated()
 		}
 	}
 
-	for _, outbound := range r.outboundManager.Outbounds() {
+	for _, outbound := range r.outbound.Outbounds() {
 		listener, isListener := outbound.(adapter.InterfaceUpdateListener)
 		if isListener {
 			listener.InterfaceUpdated()

route/route_dns.go

@@ -11,7 +11,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	R "github.com/sagernet/sing-box/route/rule"
 	"github.com/sagernet/sing-dns"
-	tun "github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common/cache"
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"

test/box_test.go

@@ -32,7 +32,7 @@ func TestMain(m *testing.M) {
 var globalCtx context.Context
 
 func init() {
-	globalCtx = box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry())
+	globalCtx = box.Context(context.Background(), include.InboundRegistry(), include.OutboundRegistry(), include.EndpointRegistry())
 }
 
 func startInstance(t *testing.T, options option.Options) *box.Box {

test/wireguard_test.go

@@ -37,12 +37,12 @@ func _TestWireGuard(t *testing.T) {
 		Outbounds: []option.Outbound{
 			{
 				Type: C.TypeWireGuard,
-				Options: &option.WireGuardOutboundOptions{
+				Options: &option.WireGuardEndpointOptions{
 					ServerOptions: option.ServerOptions{
 						Server:     "127.0.0.1",
 						ServerPort: serverPort,
 					},
-					LocalAddress:  []netip.Prefix{netip.MustParsePrefix("10.0.0.2/32")},
+					Address:       []netip.Prefix{netip.MustParsePrefix("10.0.0.2/32")},
 					PrivateKey:    "qGnwlkZljMxeECW8fbwAWdvgntnbK7B8UmMFl3zM0mk=",
 					PeerPublicKey: "QsdcBm+oJw2oNv0cIFXLIq1E850lgTBonup4qnKEQBg=",
 				},

transport/wireguard/client_bind.go

@@ -128,7 +128,7 @@ func (c *ClientBind) receive(packets [][]byte, sizes []int, eps []conn.Endpoint)
 		select {
 		case <-c.done:
 		default:
-			c.logger.Error(context.Background(), E.Cause(err, "read packet"))
+			c.logger.Error(E.Cause(err, "read packet"))
 			err = nil
 		}
 		return
@@ -138,7 +138,7 @@ func (c *ClientBind) receive(packets [][]byte, sizes []int, eps []conn.Endpoint)
 		b := packets[0]
 		common.ClearArray(b[1:4])
 	}
-	eps[0] = Endpoint(M.AddrPortFromNet(addr))
+	eps[0] = remoteEndpoint(M.AddrPortFromNet(addr))
 	count = 1
 	return
 }
@@ -169,7 +169,7 @@ func (c *ClientBind) Send(bufs [][]byte, ep conn.Endpoint) error {
 		time.Sleep(time.Second)
 		return err
 	}
-	destination := netip.AddrPort(ep.(Endpoint))
+	destination := netip.AddrPort(ep.(remoteEndpoint))
 	for _, b := range bufs {
 		if len(b) > 3 {
 			reserved, loaded := c.reservedForEndpoint[destination]
@@ -192,7 +192,7 @@ func (c *ClientBind) ParseEndpoint(s string) (conn.Endpoint, error) {
 	if err != nil {
 		return nil, err
 	}
-	return Endpoint(ap), nil
+	return remoteEndpoint(ap), nil
 }
 
 func (c *ClientBind) BatchSize() int {
@@ -229,3 +229,31 @@ func (w *wireConn) Close() error {
 	close(w.done)
 	return nil
 }
+
+var _ conn.Endpoint = (*remoteEndpoint)(nil)
+
+type remoteEndpoint netip.AddrPort
+
+func (e remoteEndpoint) ClearSrc() {
+}
+
+func (e remoteEndpoint) SrcToString() string {
+	return ""
+}
+
+func (e remoteEndpoint) DstToString() string {
+	return (netip.AddrPort)(e).String()
+}
+
+func (e remoteEndpoint) DstToBytes() []byte {
+	b, _ := (netip.AddrPort)(e).MarshalBinary()
+	return b
+}
+
+func (e remoteEndpoint) DstIP() netip.Addr {
+	return (netip.AddrPort)(e).Addr()
+}
+
+func (e remoteEndpoint) SrcIP() netip.Addr {
+	return netip.Addr{}
+}

transport/wireguard/device.go

@@ -1,13 +1,44 @@
 package wireguard
 
 import (
+	"context"
+	"net/netip"
+	"time"
+
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common/logger"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/sagernet/wireguard-go/tun"
+	"github.com/sagernet/wireguard-go/device"
+	wgTun "github.com/sagernet/wireguard-go/tun"
 )
 
 type Device interface {
-	tun.Device
+	wgTun.Device
 	N.Dialer
 	Start() error
-	// NewEndpoint() (stack.LinkEndpoint, error)
+	SetDevice(device *device.Device)
+}
+
+type DeviceOptions struct {
+	Context        context.Context
+	Logger         logger.ContextLogger
+	System         bool
+	Handler        tun.Handler
+	UDPTimeout     time.Duration
+	CreateDialer   func(interfaceName string) N.Dialer
+	Name           string
+	MTU            uint32
+	GSO            bool
+	Address        []netip.Prefix
+	AllowedAddress []netip.Prefix
+}
+
+func NewDevice(options DeviceOptions) (Device, error) {
+	if !options.System {
+		return newStackDevice(options)
+	} else if options.Handler == nil {
+		return newSystemDevice(options)
+	} else {
+		return newSystemStackDevice(options)
+	}
 }

transport/wireguard/device_stack.go

@@ -5,7 +5,6 @@ package wireguard
 import (
 	"context"
 	"net"
-	"net/netip"
 	"os"
 
 	"github.com/sagernet/gvisor/pkg/buffer"
@@ -15,52 +14,41 @@ import (
 	"github.com/sagernet/gvisor/pkg/tcpip/network/ipv4"
 	"github.com/sagernet/gvisor/pkg/tcpip/network/ipv6"
 	"github.com/sagernet/gvisor/pkg/tcpip/stack"
-	"github.com/sagernet/gvisor/pkg/tcpip/transport/icmp"
 	"github.com/sagernet/gvisor/pkg/tcpip/transport/tcp"
 	"github.com/sagernet/gvisor/pkg/tcpip/transport/udp"
 	"github.com/sagernet/sing-tun"
-	"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/wireguard-go/device"
 	wgTun "github.com/sagernet/wireguard-go/tun"
 )
 
-var _ Device = (*StackDevice)(nil)
+var _ Device = (*stackDevice)(nil)
 
-const defaultNIC tcpip.NICID = 1
-
-type StackDevice struct {
-	stack          *stack.Stack
-	mtu            uint32
-	events         chan wgTun.Event
-	outbound       chan *stack.PacketBuffer
-	packetOutbound chan *buf.Buffer
-	done           chan struct{}
-	dispatcher     stack.NetworkDispatcher
-	addr4          tcpip.Address
-	addr6          tcpip.Address
+type stackDevice struct {
+	stack      *stack.Stack
+	mtu        uint32
+	events     chan wgTun.Event
+	outbound   chan *stack.PacketBuffer
+	done       chan struct{}
+	dispatcher stack.NetworkDispatcher
+	addr4      tcpip.Address
+	addr6      tcpip.Address
 }
 
-func NewStackDevice(localAddresses []netip.Prefix, mtu uint32) (*StackDevice, error) {
-	ipStack := stack.New(stack.Options{
-		NetworkProtocols:   []stack.NetworkProtocolFactory{ipv4.NewProtocol, ipv6.NewProtocol},
-		TransportProtocols: []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol, icmp.NewProtocol4, icmp.NewProtocol6},
-		HandleLocal:        true,
-	})
-	tunDevice := &StackDevice{
-		stack:          ipStack,
-		mtu:            mtu,
-		events:         make(chan wgTun.Event, 1),
-		outbound:       make(chan *stack.PacketBuffer, 256),
-		packetOutbound: make(chan *buf.Buffer, 256),
-		done:           make(chan struct{}),
+func newStackDevice(options DeviceOptions) (*stackDevice, error) {
+	tunDevice := &stackDevice{
+		mtu:      options.MTU,
+		events:   make(chan wgTun.Event, 1),
+		outbound: make(chan *stack.PacketBuffer, 256),
+		done:     make(chan struct{}),
 	}
-	err := ipStack.CreateNIC(defaultNIC, (*wireEndpoint)(tunDevice))
+	ipStack, err := tun.NewGVisorStack((*wireEndpoint)(tunDevice))
 	if err != nil {
-		return nil, E.New(err.String())
+		return nil, err
 	}
-	for _, prefix := range localAddresses {
+	for _, prefix := range options.Address {
 		addr := tun.AddressFromAddr(prefix.Addr())
 		protoAddr := tcpip.ProtocolAddress{
 			AddressWithPrefix: tcpip.AddressWithPrefix{
@@ -75,32 +63,27 @@ func NewStackDevice(localAddresses []netip.Prefix, mtu uint32) (*StackDevice, er
 			tunDevice.addr6 = addr
 			protoAddr.Protocol = ipv6.ProtocolNumber
 		}
-		err = ipStack.AddProtocolAddress(defaultNIC, protoAddr, stack.AddressProperties{})
-		if err != nil {
-			return nil, E.New("parse local address ", protoAddr.AddressWithPrefix, ": ", err.String())
+		gErr := ipStack.AddProtocolAddress(tun.DefaultNIC, protoAddr, stack.AddressProperties{})
+		if gErr != nil {
+			return nil, E.New("parse local address ", protoAddr.AddressWithPrefix, ": ", gErr.String())
 		}
 	}
-	sOpt := tcpip.TCPSACKEnabled(true)
-	ipStack.SetTransportProtocolOption(tcp.ProtocolNumber, &sOpt)
-	cOpt := tcpip.CongestionControlOption("cubic")
-	ipStack.SetTransportProtocolOption(tcp.ProtocolNumber, &cOpt)
-	ipStack.AddRoute(tcpip.Route{Destination: header.IPv4EmptySubnet, NIC: defaultNIC})
-	ipStack.AddRoute(tcpip.Route{Destination: header.IPv6EmptySubnet, NIC: defaultNIC})
+	tunDevice.stack = ipStack
+	if options.Handler != nil {
+		ipStack.SetTransportProtocolHandler(tcp.ProtocolNumber, tun.NewTCPForwarder(options.Context, ipStack, options.Handler).HandlePacket)
+		ipStack.SetTransportProtocolHandler(udp.ProtocolNumber, tun.NewUDPForwarder(options.Context, ipStack, options.Handler, options.UDPTimeout).HandlePacket)
+	}
 	return tunDevice, nil
 }
 
-func (w *StackDevice) NewEndpoint() (stack.LinkEndpoint, error) {
-	return (*wireEndpoint)(w), nil
-}
-
-func (w *StackDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+func (w *stackDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	addr := tcpip.FullAddress{
-		NIC:  defaultNIC,
+		NIC:  tun.DefaultNIC,
 		Port: destination.Port,
 		Addr: tun.AddressFromAddr(destination.Addr),
 	}
 	bind := tcpip.FullAddress{
-		NIC: defaultNIC,
+		NIC: tun.DefaultNIC,
 	}
 	var networkProtocol tcpip.NetworkProtocolNumber
 	if destination.IsIPv4() {
@@ -128,9 +111,9 @@ func (w *StackDevice) DialContext(ctx context.Context, network string, destinati
 	}
 }
 
-func (w *StackDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+func (w *stackDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	bind := tcpip.FullAddress{
-		NIC: defaultNIC,
+		NIC: tun.DefaultNIC,
 	}
 	var networkProtocol tcpip.NetworkProtocolNumber
 	if destination.IsIPv4() {
@@ -147,24 +130,19 @@ func (w *StackDevice) ListenPacket(ctx context.Context, destination M.Socksaddr)
 	return udpConn, nil
 }
 
-func (w *StackDevice) Inet4Address() netip.Addr {
-	return tun.AddrFromAddress(w.addr4)
+func (w *stackDevice) SetDevice(device *device.Device) {
 }
 
-func (w *StackDevice) Inet6Address() netip.Addr {
-	return tun.AddrFromAddress(w.addr6)
-}
-
-func (w *StackDevice) Start() error {
+func (w *stackDevice) Start() error {
 	w.events <- wgTun.EventUp
 	return nil
 }
 
-func (w *StackDevice) File() *os.File {
+func (w *stackDevice) File() *os.File {
 	return nil
 }
 
-func (w *StackDevice) Read(bufs [][]byte, sizes []int, offset int) (count int, err error) {
+func (w *stackDevice) Read(bufs [][]byte, sizes []int, offset int) (count int, err error) {
 	select {
 	case packetBuffer, ok := <-w.outbound:
 		if !ok {
@@ -180,17 +158,12 @@ func (w *StackDevice) Read(bufs [][]byte, sizes []int, offset int) (count int, e
 		sizes[0] = n
 		count = 1
 		return
-	case packet := <-w.packetOutbound:
-		defer packet.Release()
-		sizes[0] = copy(bufs[0][offset:], packet.Bytes())
-		count = 1
-		return
 	case <-w.done:
 		return 0, os.ErrClosed
 	}
 }
 
-func (w *StackDevice) Write(bufs [][]byte, offset int) (count int, err error) {
+func (w *stackDevice) Write(bufs [][]byte, offset int) (count int, err error) {
 	for _, b := range bufs {
 		b = b[offset:]
 		if len(b) == 0 {
@@ -213,23 +186,23 @@ func (w *StackDevice) Write(bufs [][]byte, offset int) (count int, err error) {
 	return
 }
 
-func (w *StackDevice) Flush() error {
+func (w *stackDevice) Flush() error {
 	return nil
 }
 
-func (w *StackDevice) MTU() (int, error) {
+func (w *stackDevice) MTU() (int, error) {
 	return int(w.mtu), nil
 }
 
-func (w *StackDevice) Name() (string, error) {
+func (w *stackDevice) Name() (string, error) {
 	return "sing-box", nil
 }
 
-func (w *StackDevice) Events() <-chan wgTun.Event {
+func (w *stackDevice) Events() <-chan wgTun.Event {
 	return w.events
 }
 
-func (w *StackDevice) Close() error {
+func (w *stackDevice) Close() error {
 	close(w.done)
 	close(w.events)
 	w.stack.Close()
@@ -240,13 +213,13 @@ func (w *StackDevice) Close() error {
 	return nil
 }
 
-func (w *StackDevice) BatchSize() int {
+func (w *stackDevice) BatchSize() int {
 	return 1
 }
 
 var _ stack.LinkEndpoint = (*wireEndpoint)(nil)
 
-type wireEndpoint StackDevice
+type wireEndpoint stackDevice
 
 func (ep *wireEndpoint) MTU() uint32 {
 	return ep.mtu

transport/wireguard/device_stack_stub.go

@@ -2,12 +2,12 @@
 
 package wireguard
 
-import (
-	"net/netip"
+import "github.com/sagernet/sing-tun"
 
-	"github.com/sagernet/sing-tun"
-)
-
-func NewStackDevice(localAddresses []netip.Prefix, mtu uint32) (Device, error) {
+func newStackDevice(options DeviceOptions) (Device, error) {
+	return nil, tun.ErrGVisorNotIncluded
+}
+
+func newSystemStackDevice(options DeviceOptions) (Device, error) {
 	return nil, tun.ErrGVisorNotIncluded
 }

transport/wireguard/device_system.go

@@ -6,96 +6,88 @@ import (
 	"net"
 	"net/netip"
 	"os"
+	"runtime"
 	"sync"
 
 	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/common/dialer"
-	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"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"
+	"github.com/sagernet/wireguard-go/device"
 	wgTun "github.com/sagernet/wireguard-go/tun"
 )
 
-var _ Device = (*SystemDevice)(nil)
+var _ Device = (*systemDevice)(nil)
 
-type SystemDevice struct {
-	dialer         N.Dialer
-	device         tun.Tun
-	batchDevice    tun.LinuxTUN
-	name           string
-	mtu            uint32
-	inet4Addresses []netip.Prefix
-	inet6Addresses []netip.Prefix
-	gso            bool
-	events         chan wgTun.Event
-	closeOnce      sync.Once
+type systemDevice struct {
+	options     DeviceOptions
+	dialer      N.Dialer
+	device      tun.Tun
+	batchDevice tun.LinuxTUN
+	events      chan wgTun.Event
+	closeOnce   sync.Once
 }
 
-func NewSystemDevice(networkManager adapter.NetworkManager, interfaceName string, localPrefixes []netip.Prefix, mtu uint32, gso bool) (*SystemDevice, error) {
-	var inet4Addresses []netip.Prefix
-	var inet6Addresses []netip.Prefix
-	for _, prefixes := range localPrefixes {
-		if prefixes.Addr().Is4() {
-			inet4Addresses = append(inet4Addresses, prefixes)
-		} else {
-			inet6Addresses = append(inet6Addresses, prefixes)
-		}
+func newSystemDevice(options DeviceOptions) (*systemDevice, error) {
+	if options.Name == "" {
+		options.Name = tun.CalculateInterfaceName("wg")
 	}
-	if interfaceName == "" {
-		interfaceName = tun.CalculateInterfaceName("wg")
-	}
-
-	return &SystemDevice{
-		dialer: common.Must1(dialer.NewDefault(networkManager, option.DialerOptions{
-			BindInterface: interfaceName,
-		})),
-		name:           interfaceName,
-		mtu:            mtu,
-		inet4Addresses: inet4Addresses,
-		inet6Addresses: inet6Addresses,
-		gso:            gso,
-		events:         make(chan wgTun.Event, 1),
+	return &systemDevice{
+		options: options,
+		dialer:  options.CreateDialer(options.Name),
+		events:  make(chan wgTun.Event, 1),
 	}, nil
 }
 
-func (w *SystemDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+func (w *systemDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	return w.dialer.DialContext(ctx, network, destination)
 }
 
-func (w *SystemDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+func (w *systemDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	return w.dialer.ListenPacket(ctx, destination)
 }
 
-func (w *SystemDevice) Inet4Address() netip.Addr {
-	if len(w.inet4Addresses) == 0 {
-		return netip.Addr{}
-	}
-	return w.inet4Addresses[0].Addr()
+func (w *systemDevice) SetDevice(device *device.Device) {
 }
 
-func (w *SystemDevice) Inet6Address() netip.Addr {
-	if len(w.inet6Addresses) == 0 {
-		return netip.Addr{}
+func (w *systemDevice) Start() error {
+	networkManager := service.FromContext[adapter.NetworkManager](w.options.Context)
+	tunOptions := tun.Options{
+		Name: w.options.Name,
+		Inet4Address: common.Filter(w.options.Address, func(it netip.Prefix) bool {
+			return it.Addr().Is4()
+		}),
+		Inet6Address: common.Filter(w.options.Address, func(it netip.Prefix) bool {
+			return it.Addr().Is6()
+		}),
+		MTU:            w.options.MTU,
+		GSO:            w.options.GSO,
+		InterfaceScope: true,
+		Inet4RouteAddress: common.Filter(w.options.AllowedAddress, func(it netip.Prefix) bool {
+			return it.Addr().Is4()
+		}),
+		Inet6RouteAddress: common.Filter(w.options.AllowedAddress, func(it netip.Prefix) bool { return it.Addr().Is6() }),
+		InterfaceMonitor:  networkManager.InterfaceMonitor(),
+		InterfaceFinder:   networkManager.InterfaceFinder(),
 	}
-	return w.inet6Addresses[0].Addr()
-}
-
-func (w *SystemDevice) Start() error {
-	tunInterface, err := tun.New(tun.Options{
-		Name:         w.name,
-		Inet4Address: w.inet4Addresses,
-		Inet6Address: w.inet6Addresses,
-		MTU:          w.mtu,
-		GSO:          w.gso,
-	})
+	// works with Linux, macOS with IFSCOPE routes, not tested on Windows
+	if runtime.GOOS == "darwin" {
+		tunOptions.AutoRoute = true
+	}
+	tunInterface, err := tun.New(tunOptions)
 	if err != nil {
 		return err
 	}
+	err = tunInterface.Start()
+	if err != nil {
+		return err
+	}
+	w.options.Logger.Info("started at ", w.options.Name)
 	w.device = tunInterface
-	if w.gso {
+	if w.options.GSO {
 		batchTUN, isBatchTUN := tunInterface.(tun.LinuxTUN)
 		if !isBatchTUN {
 			tunInterface.Close()
@@ -107,15 +99,15 @@ func (w *SystemDevice) Start() error {
 	return nil
 }
 
-func (w *SystemDevice) File() *os.File {
+func (w *systemDevice) File() *os.File {
 	return nil
 }
 
-func (w *SystemDevice) Read(bufs [][]byte, sizes []int, offset int) (count int, err error) {
+func (w *systemDevice) Read(bufs [][]byte, sizes []int, offset int) (count int, err error) {
 	if w.batchDevice != nil {
-		count, err = w.batchDevice.BatchRead(bufs, offset, sizes)
+		count, err = w.batchDevice.BatchRead(bufs, offset-tun.PacketOffset, sizes)
 	} else {
-		sizes[0], err = w.device.Read(bufs[0][offset:])
+		sizes[0], err = w.device.Read(bufs[0][offset-tun.PacketOffset:])
 		if err == nil {
 			count = 1
 		} else if errors.Is(err, tun.ErrTooManySegments) {
@@ -125,12 +117,16 @@ func (w *SystemDevice) Read(bufs [][]byte, sizes []int, offset int) (count int,
 	return
 }
 
-func (w *SystemDevice) Write(bufs [][]byte, offset int) (count int, err error) {
+func (w *systemDevice) Write(bufs [][]byte, offset int) (count int, err error) {
 	if w.batchDevice != nil {
-		return 0, w.batchDevice.BatchWrite(bufs, offset)
+		return w.batchDevice.BatchWrite(bufs, offset)
 	} else {
-		for _, b := range bufs {
-			_, err = w.device.Write(b[offset:])
+		for _, packet := range bufs {
+			if tun.PacketOffset > 0 {
+				common.ClearArray(packet[offset-tun.PacketOffset : offset])
+				tun.PacketFillHeader(packet[offset-tun.PacketOffset:], tun.PacketIPVersion(packet[offset:]))
+			}
+			_, err = w.device.Write(packet[offset-tun.PacketOffset:])
 			if err != nil {
 				return
 			}
@@ -140,28 +136,28 @@ func (w *SystemDevice) Write(bufs [][]byte, offset int) (count int, err error) {
 	return
 }
 
-func (w *SystemDevice) Flush() error {
+func (w *systemDevice) Flush() error {
 	return nil
 }
 
-func (w *SystemDevice) MTU() (int, error) {
-	return int(w.mtu), nil
+func (w *systemDevice) MTU() (int, error) {
+	return int(w.options.MTU), nil
 }
 
-func (w *SystemDevice) Name() (string, error) {
-	return w.name, nil
+func (w *systemDevice) Name() (string, error) {
+	return w.options.Name, nil
 }
 
-func (w *SystemDevice) Events() <-chan wgTun.Event {
+func (w *systemDevice) Events() <-chan wgTun.Event {
 	return w.events
 }
 
-func (w *SystemDevice) Close() error {
+func (w *systemDevice) Close() error {
 	close(w.events)
 	return w.device.Close()
 }
 
-func (w *SystemDevice) BatchSize() int {
+func (w *systemDevice) BatchSize() int {
 	if w.batchDevice != nil {
 		return w.batchDevice.BatchSize()
 	}

transport/wireguard/device_system_stack.go

@@ -0,0 +1,182 @@
+//go:build with_gvisor
+
+package wireguard
+
+import (
+	"net/netip"
+
+	"github.com/sagernet/gvisor/pkg/buffer"
+	"github.com/sagernet/gvisor/pkg/tcpip"
+	"github.com/sagernet/gvisor/pkg/tcpip/header"
+	"github.com/sagernet/gvisor/pkg/tcpip/stack"
+	"github.com/sagernet/gvisor/pkg/tcpip/transport/tcp"
+	"github.com/sagernet/gvisor/pkg/tcpip/transport/udp"
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/wireguard-go/device"
+)
+
+var _ Device = (*systemStackDevice)(nil)
+
+type systemStackDevice struct {
+	*systemDevice
+	stack     *stack.Stack
+	endpoint  *deviceEndpoint
+	writeBufs [][]byte
+}
+
+func newSystemStackDevice(options DeviceOptions) (*systemStackDevice, error) {
+	system, err := newSystemDevice(options)
+	if err != nil {
+		return nil, err
+	}
+	endpoint := &deviceEndpoint{
+		mtu:  options.MTU,
+		done: make(chan struct{}),
+	}
+	ipStack, err := tun.NewGVisorStack(endpoint)
+	if err != nil {
+		return nil, err
+	}
+	ipStack.SetTransportProtocolHandler(tcp.ProtocolNumber, tun.NewTCPForwarder(options.Context, ipStack, options.Handler).HandlePacket)
+	ipStack.SetTransportProtocolHandler(udp.ProtocolNumber, tun.NewUDPForwarder(options.Context, ipStack, options.Handler, options.UDPTimeout).HandlePacket)
+	return &systemStackDevice{
+		systemDevice: system,
+		stack:        ipStack,
+		endpoint:     endpoint,
+	}, nil
+}
+
+func (w *systemStackDevice) SetDevice(device *device.Device) {
+	w.endpoint.device = device
+}
+
+func (w *systemStackDevice) Write(bufs [][]byte, offset int) (count int, err error) {
+	if w.batchDevice != nil {
+		w.writeBufs = w.writeBufs[:0]
+		for _, packet := range bufs {
+			if !w.writeStack(packet[offset:]) {
+				w.writeBufs = append(w.writeBufs, packet)
+			}
+		}
+		if len(w.writeBufs) > 0 {
+			return w.batchDevice.BatchWrite(bufs, offset)
+		}
+	} else {
+		for _, packet := range bufs {
+			if !w.writeStack(packet[offset:]) {
+				if tun.PacketOffset > 0 {
+					common.ClearArray(packet[offset-tun.PacketOffset : offset])
+					tun.PacketFillHeader(packet[offset-tun.PacketOffset:], tun.PacketIPVersion(packet[offset:]))
+				}
+				_, err = w.device.Write(packet[offset-tun.PacketOffset:])
+			}
+			if err != nil {
+				return
+			}
+		}
+	}
+	// WireGuard will not read count
+	return
+}
+
+func (w *systemStackDevice) Close() error {
+	close(w.endpoint.done)
+	w.stack.Close()
+	for _, endpoint := range w.stack.CleanupEndpoints() {
+		endpoint.Abort()
+	}
+	w.stack.Wait()
+	return w.systemDevice.Close()
+}
+
+func (w *systemStackDevice) writeStack(packet []byte) bool {
+	var (
+		networkProtocol tcpip.NetworkProtocolNumber
+		destination     netip.Addr
+	)
+	switch header.IPVersion(packet) {
+	case header.IPv4Version:
+		networkProtocol = header.IPv4ProtocolNumber
+		destination = netip.AddrFrom4(header.IPv4(packet).DestinationAddress().As4())
+	case header.IPv6Version:
+		networkProtocol = header.IPv6ProtocolNumber
+		destination = netip.AddrFrom16(header.IPv6(packet).DestinationAddress().As16())
+	}
+	for _, prefix := range w.options.Address {
+		if prefix.Contains(destination) {
+			return false
+		}
+	}
+	packetBuffer := stack.NewPacketBuffer(stack.PacketBufferOptions{
+		Payload: buffer.MakeWithData(packet),
+	})
+	w.endpoint.dispatcher.DeliverNetworkPacket(networkProtocol, packetBuffer)
+	packetBuffer.DecRef()
+	return true
+}
+
+type deviceEndpoint struct {
+	mtu        uint32
+	done       chan struct{}
+	device     *device.Device
+	dispatcher stack.NetworkDispatcher
+}
+
+func (ep *deviceEndpoint) MTU() uint32 {
+	return ep.mtu
+}
+
+func (ep *deviceEndpoint) SetMTU(mtu uint32) {
+}
+
+func (ep *deviceEndpoint) MaxHeaderLength() uint16 {
+	return 0
+}
+
+func (ep *deviceEndpoint) LinkAddress() tcpip.LinkAddress {
+	return ""
+}
+
+func (ep *deviceEndpoint) SetLinkAddress(addr tcpip.LinkAddress) {
+}
+
+func (ep *deviceEndpoint) Capabilities() stack.LinkEndpointCapabilities {
+	return stack.CapabilityRXChecksumOffload
+}
+
+func (ep *deviceEndpoint) Attach(dispatcher stack.NetworkDispatcher) {
+	ep.dispatcher = dispatcher
+}
+
+func (ep *deviceEndpoint) IsAttached() bool {
+	return ep.dispatcher != nil
+}
+
+func (ep *deviceEndpoint) Wait() {
+}
+
+func (ep *deviceEndpoint) ARPHardwareType() header.ARPHardwareType {
+	return header.ARPHardwareNone
+}
+
+func (ep *deviceEndpoint) AddHeader(buffer *stack.PacketBuffer) {
+}
+
+func (ep *deviceEndpoint) ParseHeader(ptr *stack.PacketBuffer) bool {
+	return true
+}
+
+func (ep *deviceEndpoint) WritePackets(list stack.PacketBufferList) (int, tcpip.Error) {
+	for _, packetBuffer := range list.AsSlice() {
+		destination := packetBuffer.Network().DestinationAddress()
+		ep.device.InputPacket(destination.AsSlice(), packetBuffer.AsSlices())
+	}
+	return list.Len(), nil
+}
+
+func (ep *deviceEndpoint) Close() {
+}
+
+func (ep *deviceEndpoint) SetOnCloseAction(f func()) {
+}

transport/wireguard/endpoint.go

@@ -1,35 +1,254 @@
 package wireguard
 
 import (
+	"context"
+	"encoding/base64"
+	"encoding/hex"
+	"fmt"
+	"net"
 	"net/netip"
+	"os"
+	"strings"
 
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	F "github.com/sagernet/sing/common/format"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/sagernet/sing/common/x/list"
+	"github.com/sagernet/sing/service"
+	"github.com/sagernet/sing/service/pause"
 	"github.com/sagernet/wireguard-go/conn"
+	"github.com/sagernet/wireguard-go/device"
+
+	"go4.org/netipx"
 )
 
-var _ conn.Endpoint = (*Endpoint)(nil)
-
-type Endpoint netip.AddrPort
-
-func (e Endpoint) ClearSrc() {
+type Endpoint struct {
+	options        EndpointOptions
+	peers          []peerConfig
+	ipcConf        string
+	allowedAddress []netip.Prefix
+	tunDevice      Device
+	device         *device.Device
+	pauseManager   pause.Manager
+	pauseCallback  *list.Element[pause.Callback]
 }
 
-func (e Endpoint) SrcToString() string {
-	return ""
+func NewEndpoint(options EndpointOptions) (*Endpoint, error) {
+	if options.PrivateKey == "" {
+		return nil, E.New("missing private key")
+	}
+	privateKeyBytes, err := base64.StdEncoding.DecodeString(options.PrivateKey)
+	if err != nil {
+		return nil, E.Cause(err, "decode private key")
+	}
+	privateKey := hex.EncodeToString(privateKeyBytes)
+	ipcConf := "private_key=" + privateKey
+	if options.ListenPort != 0 {
+		ipcConf += "\nlisten_port=" + F.ToString(options.ListenPort)
+	}
+	var peers []peerConfig
+	for peerIndex, rawPeer := range options.Peers {
+		peer := peerConfig{
+			allowedIPs: rawPeer.AllowedIPs,
+			keepalive:  rawPeer.PersistentKeepaliveInterval,
+		}
+		if rawPeer.Endpoint.Addr.IsValid() {
+			peer.endpoint = rawPeer.Endpoint.AddrPort()
+		} else if rawPeer.Endpoint.IsFqdn() {
+			peer.destination = rawPeer.Endpoint
+		}
+		publicKeyBytes, err := base64.StdEncoding.DecodeString(rawPeer.PublicKey)
+		if err != nil {
+			return nil, E.Cause(err, "decode public key for peer ", peerIndex)
+		}
+		peer.publicKeyHex = hex.EncodeToString(publicKeyBytes)
+		if rawPeer.PreSharedKey != "" {
+			preSharedKeyBytes, err := base64.StdEncoding.DecodeString(rawPeer.PreSharedKey)
+			if err != nil {
+				return nil, E.Cause(err, "decode pre shared key for peer ", peerIndex)
+			}
+			peer.preSharedKeyHex = hex.EncodeToString(preSharedKeyBytes)
+		}
+		if len(rawPeer.AllowedIPs) == 0 {
+			return nil, E.New("missing allowed ips for peer ", peerIndex)
+		}
+		if len(rawPeer.Reserved) > 0 {
+			if len(rawPeer.Reserved) != 3 {
+				return nil, E.New("invalid reserved value for peer ", peerIndex, ", required 3 bytes, got ", len(peer.reserved))
+			}
+			copy(peer.reserved[:], rawPeer.Reserved[:])
+		}
+		peers = append(peers, peer)
+	}
+	var allowedPrefixBuilder netipx.IPSetBuilder
+	for _, peer := range options.Peers {
+		for _, prefix := range peer.AllowedIPs {
+			allowedPrefixBuilder.AddPrefix(prefix)
+		}
+	}
+	allowedIPSet, err := allowedPrefixBuilder.IPSet()
+	if err != nil {
+		return nil, err
+	}
+	allowedAddresses := allowedIPSet.Prefixes()
+	if options.MTU == 0 {
+		options.MTU = 1408
+	}
+	deviceOptions := DeviceOptions{
+		Context:        options.Context,
+		Logger:         options.Logger,
+		System:         options.System,
+		Handler:        options.Handler,
+		UDPTimeout:     options.UDPTimeout,
+		CreateDialer:   options.CreateDialer,
+		Name:           options.Name,
+		MTU:            options.MTU,
+		GSO:            options.GSO,
+		Address:        options.Address,
+		AllowedAddress: allowedAddresses,
+	}
+	tunDevice, err := NewDevice(deviceOptions)
+	if err != nil {
+		return nil, E.Cause(err, "create WireGuard device")
+	}
+	return &Endpoint{
+		options:        options,
+		peers:          peers,
+		ipcConf:        ipcConf,
+		allowedAddress: allowedAddresses,
+		tunDevice:      tunDevice,
+	}, nil
 }
 
-func (e Endpoint) DstToString() string {
-	return (netip.AddrPort)(e).String()
+func (e *Endpoint) Start(resolve bool) error {
+	if common.Any(e.peers, func(peer peerConfig) bool {
+		return !peer.endpoint.IsValid() && peer.destination.IsFqdn()
+	}) {
+		if !resolve {
+			return nil
+		}
+		for peerIndex, peer := range e.peers {
+			if peer.endpoint.IsValid() || !peer.destination.IsFqdn() {
+				continue
+			}
+			destinationAddress, err := e.options.ResolvePeer(peer.destination.Fqdn)
+			if err != nil {
+				return E.Cause(err, "resolve endpoint domain for peer[", peerIndex, "]: ", peer.destination)
+			}
+			e.peers[peerIndex].endpoint = netip.AddrPortFrom(destinationAddress, peer.destination.Port)
+		}
+	} else if resolve {
+		return nil
+	}
+	var bind conn.Bind
+	wgListener, isWgListener := e.options.Dialer.(conn.Listener)
+	if isWgListener {
+		bind = conn.NewStdNetBind(wgListener)
+	} else {
+		var (
+			isConnect   bool
+			connectAddr netip.AddrPort
+			reserved    [3]uint8
+		)
+		peerLen := len(e.peers)
+		if peerLen == 1 {
+			isConnect = true
+			connectAddr = e.peers[0].endpoint
+			reserved = e.peers[0].reserved
+		}
+		bind = NewClientBind(e.options.Context, e.options.Logger, e.options.Dialer, isConnect, connectAddr, reserved)
+	}
+	err := e.tunDevice.Start()
+	if err != nil {
+		return err
+	}
+	logger := &device.Logger{
+		Verbosef: func(format string, args ...interface{}) {
+			e.options.Logger.Debug(fmt.Sprintf(strings.ToLower(format), args...))
+		},
+		Errorf: func(format string, args ...interface{}) {
+			e.options.Logger.Error(fmt.Sprintf(strings.ToLower(format), args...))
+		},
+	}
+	wgDevice := device.NewDevice(e.options.Context, e.tunDevice, bind, logger, e.options.Workers)
+	e.tunDevice.SetDevice(wgDevice)
+	ipcConf := e.ipcConf
+	for _, peer := range e.peers {
+		ipcConf += peer.GenerateIpcLines()
+	}
+	err = wgDevice.IpcSet(ipcConf)
+	if err != nil {
+		return E.Cause(err, "setup wireguard: \n", ipcConf)
+	}
+	e.device = wgDevice
+	e.pauseManager = service.FromContext[pause.Manager](e.options.Context)
+	if e.pauseManager != nil {
+		e.pauseCallback = e.pauseManager.RegisterCallback(e.onPauseUpdated)
+	}
+	return nil
 }
 
-func (e Endpoint) DstToBytes() []byte {
-	b, _ := (netip.AddrPort)(e).MarshalBinary()
-	return b
+func (e *Endpoint) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	if !destination.Addr.IsValid() {
+		return nil, E.Cause(os.ErrInvalid, "invalid non-IP destination")
+	}
+	return e.tunDevice.DialContext(ctx, network, destination)
 }
 
-func (e Endpoint) DstIP() netip.Addr {
-	return (netip.AddrPort)(e).Addr()
+func (e *Endpoint) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	if !destination.Addr.IsValid() {
+		return nil, E.Cause(os.ErrInvalid, "invalid non-IP destination")
+	}
+	return e.tunDevice.ListenPacket(ctx, destination)
 }
 
-func (e Endpoint) SrcIP() netip.Addr {
-	return netip.Addr{}
+func (e *Endpoint) BindUpdate() error {
+	return e.device.BindUpdate()
+}
+
+func (e *Endpoint) Close() error {
+	if e.device != nil {
+		e.device.Close()
+	}
+	if e.pauseCallback != nil {
+		e.pauseManager.UnregisterCallback(e.pauseCallback)
+	}
+	return nil
+}
+
+func (e *Endpoint) onPauseUpdated(event int) {
+	switch event {
+	case pause.EventDevicePaused:
+		e.device.Down()
+	case pause.EventDeviceWake:
+		e.device.Up()
+	}
+}
+
+type peerConfig struct {
+	destination     M.Socksaddr
+	endpoint        netip.AddrPort
+	publicKeyHex    string
+	preSharedKeyHex string
+	allowedIPs      []netip.Prefix
+	keepalive       uint16
+	reserved        [3]uint8
+}
+
+func (c peerConfig) GenerateIpcLines() string {
+	ipcLines := "\npublic_key=" + c.publicKeyHex
+	if c.endpoint.IsValid() {
+		ipcLines += "\nendpoint=" + c.endpoint.String()
+	}
+	if c.preSharedKeyHex != "" {
+		ipcLines += "\npreshared_key=" + c.preSharedKeyHex
+	}
+	for _, allowedIP := range c.allowedIPs {
+		ipcLines += "\nallowed_ip=" + allowedIP.String()
+	}
+	if c.keepalive > 0 {
+		ipcLines += "\npersistent_keepalive_interval=" + F.ToString(c.keepalive)
+	}
+	return ipcLines
 }

transport/wireguard/endpoint_options.go

@@ -0,0 +1,40 @@
+package wireguard
+
+import (
+	"context"
+	"net/netip"
+	"time"
+
+	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+type EndpointOptions struct {
+	Context      context.Context
+	Logger       logger.ContextLogger
+	System       bool
+	Handler      tun.Handler
+	UDPTimeout   time.Duration
+	Dialer       N.Dialer
+	CreateDialer func(interfaceName string) N.Dialer
+	Name         string
+	MTU          uint32
+	GSO          bool
+	Address      []netip.Prefix
+	PrivateKey   string
+	ListenPort   uint16
+	ResolvePeer  func(domain string) (netip.Addr, error)
+	Peers        []PeerOptions
+	Workers      int
+}
+
+type PeerOptions struct {
+	Endpoint                    M.Socksaddr
+	PublicKey                   string
+	PreSharedKey                string
+	AllowedIPs                  []netip.Prefix
+	PersistentKeepaliveInterval uint16
+	Reserved                    []uint8
+}

transport/wireguard/resolve.go

@@ -1,148 +0,0 @@
-package wireguard
-
-import (
-	"context"
-	"encoding/base64"
-	"encoding/hex"
-	"net/netip"
-
-	"github.com/sagernet/sing-box/adapter"
-	"github.com/sagernet/sing-box/option"
-	"github.com/sagernet/sing-dns"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-)
-
-type PeerConfig struct {
-	destination    M.Socksaddr
-	domainStrategy dns.DomainStrategy
-	Endpoint       netip.AddrPort
-	PublicKey      string
-	PreSharedKey   string
-	AllowedIPs     []string
-	Reserved       [3]uint8
-}
-
-func (c PeerConfig) GenerateIpcLines() string {
-	ipcLines := "\npublic_key=" + c.PublicKey
-	ipcLines += "\nendpoint=" + c.Endpoint.String()
-	if c.PreSharedKey != "" {
-		ipcLines += "\npreshared_key=" + c.PreSharedKey
-	}
-	for _, allowedIP := range c.AllowedIPs {
-		ipcLines += "\nallowed_ip=" + allowedIP
-	}
-	return ipcLines
-}
-
-func ParsePeers(options option.WireGuardOutboundOptions) ([]PeerConfig, error) {
-	var peers []PeerConfig
-	if len(options.Peers) > 0 {
-		for peerIndex, rawPeer := range options.Peers {
-			peer := PeerConfig{
-				AllowedIPs: rawPeer.AllowedIPs,
-			}
-			destination := rawPeer.ServerOptions.Build()
-			if destination.IsFqdn() {
-				peer.destination = destination
-				peer.domainStrategy = dns.DomainStrategy(options.DomainStrategy)
-			} else {
-				peer.Endpoint = destination.AddrPort()
-			}
-			{
-				bytes, err := base64.StdEncoding.DecodeString(rawPeer.PublicKey)
-				if err != nil {
-					return nil, E.Cause(err, "decode public key for peer ", peerIndex)
-				}
-				peer.PublicKey = hex.EncodeToString(bytes)
-			}
-			if rawPeer.PreSharedKey != "" {
-				bytes, err := base64.StdEncoding.DecodeString(rawPeer.PreSharedKey)
-				if err != nil {
-					return nil, E.Cause(err, "decode pre shared key for peer ", peerIndex)
-				}
-				peer.PreSharedKey = hex.EncodeToString(bytes)
-			}
-			if len(rawPeer.AllowedIPs) == 0 {
-				return nil, E.New("missing allowed_ips for peer ", peerIndex)
-			}
-			if len(rawPeer.Reserved) > 0 {
-				if len(rawPeer.Reserved) != 3 {
-					return nil, E.New("invalid reserved value for peer ", peerIndex, ", required 3 bytes, got ", len(peer.Reserved))
-				}
-				copy(peer.Reserved[:], options.Reserved)
-			}
-			peers = append(peers, peer)
-		}
-	} else {
-		peer := PeerConfig{}
-		var (
-			addressHas4 bool
-			addressHas6 bool
-		)
-		for _, localAddress := range options.LocalAddress {
-			if localAddress.Addr().Is4() {
-				addressHas4 = true
-			} else {
-				addressHas6 = true
-			}
-		}
-		if addressHas4 {
-			peer.AllowedIPs = append(peer.AllowedIPs, netip.PrefixFrom(netip.IPv4Unspecified(), 0).String())
-		}
-		if addressHas6 {
-			peer.AllowedIPs = append(peer.AllowedIPs, netip.PrefixFrom(netip.IPv6Unspecified(), 0).String())
-		}
-		destination := options.ServerOptions.Build()
-		if destination.IsFqdn() {
-			peer.destination = destination
-			peer.domainStrategy = dns.DomainStrategy(options.DomainStrategy)
-		} else {
-			peer.Endpoint = destination.AddrPort()
-		}
-		{
-			bytes, err := base64.StdEncoding.DecodeString(options.PeerPublicKey)
-			if err != nil {
-				return nil, E.Cause(err, "decode peer public key")
-			}
-			peer.PublicKey = hex.EncodeToString(bytes)
-		}
-		if options.PreSharedKey != "" {
-			bytes, err := base64.StdEncoding.DecodeString(options.PreSharedKey)
-			if err != nil {
-				return nil, E.Cause(err, "decode pre shared key")
-			}
-			peer.PreSharedKey = hex.EncodeToString(bytes)
-		}
-		if len(options.Reserved) > 0 {
-			if len(options.Reserved) != 3 {
-				return nil, E.New("invalid reserved value, required 3 bytes, got ", len(peer.Reserved))
-			}
-			copy(peer.Reserved[:], options.Reserved)
-		}
-		peers = append(peers, peer)
-	}
-	return peers, nil
-}
-
-func ResolvePeers(ctx context.Context, router adapter.Router, peers []PeerConfig) error {
-	for peerIndex, peer := range peers {
-		if peer.Endpoint.IsValid() {
-			continue
-		}
-		destinationAddresses, err := router.Lookup(ctx, peer.destination.Fqdn, peer.domainStrategy)
-		if err != nil {
-			if len(peers) == 1 {
-				return E.Cause(err, "resolve endpoint domain")
-			} else {
-				return E.Cause(err, "resolve endpoint domain for peer ", peerIndex)
-			}
-		}
-		if len(destinationAddresses) == 0 {
-			return E.New("no addresses found for endpoint domain: ", peer.destination.Fqdn)
-		}
-		peers[peerIndex].Endpoint = netip.AddrPortFrom(destinationAddresses[0], peer.destination.Port)
-
-	}
-	return nil
-}