Add tun support

Update dependencies
feat: add tcp_user_timeout
2025-08-23 01:56:48 +08:00 · 2023-04-23 19:51:48 +08:00 · 2023-04-23 19:32:07 +08:00 · 2023-04-22 20:41:43 -04:00 · 2023-04-20 23:43:06 -04:00 · 2023-04-20 11:36:25 -04:00
39 changed files with 1601 additions and 278 deletions
--- a/.github/docker/Dockerfile
+++ b/.github/docker/Dockerfile
@@ -0,0 +1,21 @@
+# syntax=docker/dockerfile:1
+FROM --platform=$BUILDPLATFORM golang:alpine AS build
+WORKDIR /src
+COPY . .
+ARG TARGETOS TARGETARCH
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+
+FROM --platform=${TARGETPLATFORM} alpine:latest
+WORKDIR /root
+COPY .github/docker/files/config.json /etc/xray/config.json
+COPY --from=build /src/xray /usr/bin/xray
+RUN set -ex \
+	&& apk add --no-cache tzdata ca-certificates \
+	&& mkdir -p /var/log/xray /usr/share/xray \
+    && chmod +x /usr/bin/xray \
+	&& wget -O /usr/share/xray/geosite.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat \
+	&& wget -O /usr/share/xray/geoip.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat
+
+VOLUME /etc/xray
+ENV TZ=Asia/Shanghai
+CMD [ "/usr/bin/xray", "-config", "/etc/xray/config.json" ]
--- a/.github/docker/files/config.json
+++ b/.github/docker/files/config.json
@@ -0,0 +1,19 @@
+{
+  "inbounds": [{
+    "port": 9000,
+    "protocol": "vmess",
+    "settings": {
+      "clients": [
+        {
+          "id": "1eb6e917-774b-4a84-aff6-b058577c60a5",
+          "level": 1,
+          "alterId": 64
+        }
+      ]
+    }
+  }],
+  "outbounds": [{
+    "protocol": "freedom",
+    "settings": {}
+  }]
+}
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,45 @@
+name: Build docker image
+
+on:
+  push:
+    branches:
+      - '*'
+
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/xray-core
+          flavor: latest=true
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - # Add support for more platforms with QEMU (optional)
+        # https://github.com/docker/setup-qemu-action
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          file: .github/docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -186,12 +186,12 @@ jobs:
      - name: Build Xray
        run: |
          mkdir -p build_assets
-          go build -v -o build_assets/xray -trimpath -ldflags "-s -w -buildid=" ./main
+          go build -v -o build_assets/xray -trimpath -ldflags "-s -w -buildid=" -tags with_gvisor ./main

      - name: Build background Xray on Windows 
        if: matrix.goos == 'windows'
        run: |
-          go build -v -o build_assets/wxray.exe -trimpath -ldflags "-s -w -H windowsgui -buildid=" ./main
+          go build -v -o build_assets/wxray.exe -trimpath -ldflags "-s -w -H windowsgui -buildid=" -tags with_gvisor ./main
    
      - name: Build Mips softfloat Xray
        if: matrix.goarch == 'mips' || matrix.goarch == 'mipsle'
--- a/app/dispatcher/default.go
+++ b/app/dispatcher/default.go
@@ -342,29 +342,27 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 	}
 	sniffingRequest := content.SniffingRequest
 	if !sniffingRequest.Enabled {
-		go d.routedDispatch(ctx, outbound, destination)
+		d.routedDispatch(ctx, outbound, destination)
 	} else {
-		go func() {
-			cReader := &cachedReader{
-				reader: outbound.Reader.(*pipe.Reader),
+		cReader := &cachedReader{
+			reader: outbound.Reader.(*pipe.Reader),
+		}
+		outbound.Reader = cReader
+		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
+		if err == nil {
+			content.Protocol = result.Protocol()
+		}
+		if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
+			domain := result.Domain()
+			newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+			destination.Address = net.ParseAddress(domain)
+			if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
+				ob.RouteTarget = destination
+			} else {
+				ob.Target = destination
 			}
-			outbound.Reader = cReader
-			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
-			if err == nil {
-				content.Protocol = result.Protocol()
-			}
-			if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
-				domain := result.Domain()
-				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
-				destination.Address = net.ParseAddress(domain)
-				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
-					ob.RouteTarget = destination
-				} else {
-					ob.Target = destination
-				}
-			}
-			d.routedDispatch(ctx, outbound, destination)
-		}()
+		}
+		d.routedDispatch(ctx, outbound, destination)
 	}

 	return nil
--- a/app/proxyman/outbound/handler.go
+++ b/app/proxyman/outbound/handler.go
@@ -211,7 +211,7 @@ out:
 		err.WriteToLog(session.ExportIDToError(ctx))
 		common.Interrupt(link.Writer)
 	} else {
-		common.Must(common.Close(link.Writer))
+		common.Close(link.Writer)
 	}
 	common.Interrupt(link.Reader)
 }
--- a/app/tun/config.pb.go
+++ b/app/tun/config.pb.go
@@ -0,0 +1,347 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.21.12
+// source: app/tun/config.proto
+
+package tun
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Config struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	InterfaceName          string   `protobuf:"bytes,1,opt,name=interface_name,json=interfaceName,proto3" json:"interface_name,omitempty"`
+	Inet4Address           []string `protobuf:"bytes,2,rep,name=inet4_address,json=inet4Address,proto3" json:"inet4_address,omitempty"`
+	Inet6Address           []string `protobuf:"bytes,3,rep,name=inet6_address,json=inet6Address,proto3" json:"inet6_address,omitempty"`
+	Mtu                    uint32   `protobuf:"varint,4,opt,name=mtu,proto3" json:"mtu,omitempty"`
+	AutoRoute              bool     `protobuf:"varint,5,opt,name=auto_route,json=autoRoute,proto3" json:"auto_route,omitempty"`
+	StrictRoute            bool     `protobuf:"varint,6,opt,name=strict_route,json=strictRoute,proto3" json:"strict_route,omitempty"`
+	Inet4RouteAddress      []string `protobuf:"bytes,7,rep,name=inet4_route_address,json=inet4RouteAddress,proto3" json:"inet4_route_address,omitempty"`
+	Inet6RouteAddress      []string `protobuf:"bytes,8,rep,name=inet6_route_address,json=inet6RouteAddress,proto3" json:"inet6_route_address,omitempty"`
+	EndpointIndependentNat bool     `protobuf:"varint,9,opt,name=endpoint_independent_nat,json=endpointIndependentNat,proto3" json:"endpoint_independent_nat,omitempty"`
+	UdpTimeout             int64    `protobuf:"varint,10,opt,name=udp_timeout,json=udpTimeout,proto3" json:"udp_timeout,omitempty"`
+	Stack                  string   `protobuf:"bytes,11,opt,name=stack,proto3" json:"stack,omitempty"`
+	IncludeUid             []uint32 `protobuf:"varint,12,rep,packed,name=include_uid,json=includeUid,proto3" json:"include_uid,omitempty"`
+	IncludeUidRange        []string `protobuf:"bytes,13,rep,name=include_uid_range,json=includeUidRange,proto3" json:"include_uid_range,omitempty"`
+	ExcludeUid             []uint32 `protobuf:"varint,14,rep,packed,name=exclude_uid,json=excludeUid,proto3" json:"exclude_uid,omitempty"`
+	ExcludeUidRange        []string `protobuf:"bytes,15,rep,name=exclude_uid_range,json=excludeUidRange,proto3" json:"exclude_uid_range,omitempty"`
+	IncludeAndroidUser     []int32  `protobuf:"varint,16,rep,packed,name=include_android_user,json=includeAndroidUser,proto3" json:"include_android_user,omitempty"`
+	IncludePackage         []string `protobuf:"bytes,17,rep,name=include_package,json=includePackage,proto3" json:"include_package,omitempty"`
+	ExcludePackage         []string `protobuf:"bytes,18,rep,name=exclude_package,json=excludePackage,proto3" json:"exclude_package,omitempty"`
+	// for xray
+	AutoDetectInterface bool `protobuf:"varint,100,opt,name=auto_detect_interface,json=autoDetectInterface,proto3" json:"auto_detect_interface,omitempty"`
+	OverrideAndroidVpn  bool `protobuf:"varint,101,opt,name=override_android_vpn,json=overrideAndroidVpn,proto3" json:"override_android_vpn,omitempty"`
+}
+
+func (x *Config) Reset() {
+	*x = Config{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_tun_config_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Config) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Config) ProtoMessage() {}
+
+func (x *Config) ProtoReflect() protoreflect.Message {
+	mi := &file_app_tun_config_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Config.ProtoReflect.Descriptor instead.
+func (*Config) Descriptor() ([]byte, []int) {
+	return file_app_tun_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Config) GetInterfaceName() string {
+	if x != nil {
+		return x.InterfaceName
+	}
+	return ""
+}
+
+func (x *Config) GetInet4Address() []string {
+	if x != nil {
+		return x.Inet4Address
+	}
+	return nil
+}
+
+func (x *Config) GetInet6Address() []string {
+	if x != nil {
+		return x.Inet6Address
+	}
+	return nil
+}
+
+func (x *Config) GetMtu() uint32 {
+	if x != nil {
+		return x.Mtu
+	}
+	return 0
+}
+
+func (x *Config) GetAutoRoute() bool {
+	if x != nil {
+		return x.AutoRoute
+	}
+	return false
+}
+
+func (x *Config) GetStrictRoute() bool {
+	if x != nil {
+		return x.StrictRoute
+	}
+	return false
+}
+
+func (x *Config) GetInet4RouteAddress() []string {
+	if x != nil {
+		return x.Inet4RouteAddress
+	}
+	return nil
+}
+
+func (x *Config) GetInet6RouteAddress() []string {
+	if x != nil {
+		return x.Inet6RouteAddress
+	}
+	return nil
+}
+
+func (x *Config) GetEndpointIndependentNat() bool {
+	if x != nil {
+		return x.EndpointIndependentNat
+	}
+	return false
+}
+
+func (x *Config) GetUdpTimeout() int64 {
+	if x != nil {
+		return x.UdpTimeout
+	}
+	return 0
+}
+
+func (x *Config) GetStack() string {
+	if x != nil {
+		return x.Stack
+	}
+	return ""
+}
+
+func (x *Config) GetIncludeUid() []uint32 {
+	if x != nil {
+		return x.IncludeUid
+	}
+	return nil
+}
+
+func (x *Config) GetIncludeUidRange() []string {
+	if x != nil {
+		return x.IncludeUidRange
+	}
+	return nil
+}
+
+func (x *Config) GetExcludeUid() []uint32 {
+	if x != nil {
+		return x.ExcludeUid
+	}
+	return nil
+}
+
+func (x *Config) GetExcludeUidRange() []string {
+	if x != nil {
+		return x.ExcludeUidRange
+	}
+	return nil
+}
+
+func (x *Config) GetIncludeAndroidUser() []int32 {
+	if x != nil {
+		return x.IncludeAndroidUser
+	}
+	return nil
+}
+
+func (x *Config) GetIncludePackage() []string {
+	if x != nil {
+		return x.IncludePackage
+	}
+	return nil
+}
+
+func (x *Config) GetExcludePackage() []string {
+	if x != nil {
+		return x.ExcludePackage
+	}
+	return nil
+}
+
+func (x *Config) GetAutoDetectInterface() bool {
+	if x != nil {
+		return x.AutoDetectInterface
+	}
+	return false
+}
+
+func (x *Config) GetOverrideAndroidVpn() bool {
+	if x != nil {
+		return x.OverrideAndroidVpn
+	}
+	return false
+}
+
+var File_app_tun_config_proto protoreflect.FileDescriptor
+
+var file_app_tun_config_proto_rawDesc = []byte{
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+	0x6b, 0x61, 0x67, 0x65, 0x18, 0x11, 0x20, 0x03, 0x28, 0x09, 0x52, 0x0e, 0x69, 0x6e, 0x63, 0x6c,
+	0x75, 0x64, 0x65, 0x50, 0x61, 0x63, 0x6b, 0x61, 0x67, 0x65, 0x12, 0x27, 0x0a, 0x0f, 0x65, 0x78,
+	0x63, 0x6c, 0x75, 0x64, 0x65, 0x5f, 0x70, 0x61, 0x63, 0x6b, 0x61, 0x67, 0x65, 0x18, 0x12, 0x20,
+	0x03, 0x28, 0x09, 0x52, 0x0e, 0x65, 0x78, 0x63, 0x6c, 0x75, 0x64, 0x65, 0x50, 0x61, 0x63, 0x6b,
+	0x61, 0x67, 0x65, 0x12, 0x32, 0x0a, 0x15, 0x61, 0x75, 0x74, 0x6f, 0x5f, 0x64, 0x65, 0x74, 0x65,
+	0x63, 0x74, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x66, 0x61, 0x63, 0x65, 0x18, 0x64, 0x20, 0x01,
+	0x28, 0x08, 0x52, 0x13, 0x61, 0x75, 0x74, 0x6f, 0x44, 0x65, 0x74, 0x65, 0x63, 0x74, 0x49, 0x6e,
+	0x74, 0x65, 0x72, 0x66, 0x61, 0x63, 0x65, 0x12, 0x30, 0x0a, 0x14, 0x6f, 0x76, 0x65, 0x72, 0x72,
+	0x69, 0x64, 0x65, 0x5f, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x5f, 0x76, 0x70, 0x6e, 0x18,
+	0x65, 0x20, 0x01, 0x28, 0x08, 0x52, 0x12, 0x6f, 0x76, 0x65, 0x72, 0x72, 0x69, 0x64, 0x65, 0x41,
+	0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x56, 0x70, 0x6e, 0x42, 0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x74, 0x75, 0x6e, 0x50, 0x01, 0x5a,
+	0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73,
+	0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x74,
+	0x75, 0x6e, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x54, 0x75,
+	0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_app_tun_config_proto_rawDescOnce sync.Once
+	file_app_tun_config_proto_rawDescData = file_app_tun_config_proto_rawDesc
+)
+
+func file_app_tun_config_proto_rawDescGZIP() []byte {
+	file_app_tun_config_proto_rawDescOnce.Do(func() {
+		file_app_tun_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_tun_config_proto_rawDescData)
+	})
+	return file_app_tun_config_proto_rawDescData
+}
+
+var file_app_tun_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_app_tun_config_proto_goTypes = []interface{}{
+	(*Config)(nil), // 0: xray.app.tun.Config
+}
+var file_app_tun_config_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_app_tun_config_proto_init() }
+func file_app_tun_config_proto_init() {
+	if File_app_tun_config_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_app_tun_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Config); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_app_tun_config_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_app_tun_config_proto_goTypes,
+		DependencyIndexes: file_app_tun_config_proto_depIdxs,
+		MessageInfos:      file_app_tun_config_proto_msgTypes,
+	}.Build()
+	File_app_tun_config_proto = out.File
+	file_app_tun_config_proto_rawDesc = nil
+	file_app_tun_config_proto_goTypes = nil
+	file_app_tun_config_proto_depIdxs = nil
+}
--- a/app/tun/config.proto
+++ b/app/tun/config.proto
@@ -0,0 +1,32 @@
+syntax = "proto3";
+
+package xray.app.tun;
+option csharp_namespace = "Xray.App.Tun";
+option go_package = "github.com/xtls/xray-core/app/tun";
+option java_package = "com.xray.app.tun";
+option java_multiple_files = true;
+
+message Config {
+  string interface_name = 1;
+  repeated string inet4_address = 2;
+  repeated string inet6_address = 3;
+  uint32 mtu = 4;
+  bool auto_route = 5;
+  bool strict_route = 6;
+  repeated string inet4_route_address = 7;
+  repeated string inet6_route_address = 8;
+  bool endpoint_independent_nat = 9;
+  int64 udp_timeout = 10;
+  string stack = 11;
+  repeated uint32 include_uid = 12;
+  repeated string include_uid_range = 13;
+  repeated uint32 exclude_uid = 14;
+  repeated string exclude_uid_range = 15;
+  repeated int32 include_android_user = 16;
+  repeated string include_package = 17;
+  repeated string exclude_package = 18;
+
+  // for xray
+  bool auto_detect_interface = 100;
+  bool override_android_vpn = 101;
+}
--- a/app/tun/errors.generated.go
+++ b/app/tun/errors.generated.go
@@ -0,0 +1,9 @@
+package tun
+
+import "github.com/xtls/xray-core/common/errors"
+
+type errPathObjHolder struct{}
+
+func newError(values ...interface{}) *errors.Error {
+	return errors.New(values...).WithPathObj(errPathObjHolder{})
+}
--- a/app/tun/interface_finder.go
+++ b/app/tun/interface_finder.go
@@ -0,0 +1,50 @@
+package tun
+
+import (
+	"net"
+
+	"github.com/sagernet/sing/common/control"
+)
+
+var _ control.InterfaceFinder = (*myInterfaceFinder)(nil)
+
+type myInterfaceFinder struct {
+	ifs []net.Interface
+}
+
+func (f *myInterfaceFinder) update() error {
+	ifs, err := net.Interfaces()
+	if err != nil {
+		return err
+	}
+	f.ifs = ifs
+	return nil
+}
+
+func (f *myInterfaceFinder) InterfaceIndexByName(name string) (interfaceIndex int, err error) {
+	for _, netInterface := range f.ifs {
+		if netInterface.Name == name {
+			return netInterface.Index, nil
+		}
+	}
+	netInterface, err := net.InterfaceByName(name)
+	if err != nil {
+		return
+	}
+	f.update()
+	return netInterface.Index, nil
+}
+
+func (f *myInterfaceFinder) InterfaceNameByIndex(index int) (interfaceName string, err error) {
+	for _, netInterface := range f.ifs {
+		if netInterface.Index == index {
+			return netInterface.Name, nil
+		}
+	}
+	netInterface, err := net.InterfaceByIndex(index)
+	if err != nil {
+		return
+	}
+	f.update()
+	return netInterface.Name, nil
+}
--- a/app/tun/packet_conn.go
+++ b/app/tun/packet_conn.go
@@ -0,0 +1,42 @@
+package tun
+
+import (
+	sing_common "github.com/sagernet/sing/common"
+	sing_buf "github.com/sagernet/sing/common/buf"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/singbridge"
+)
+
+type PacketConn struct {
+	N.PacketConn
+}
+
+func (p *PacketConn) ReadMultiBuffer() (buf.MultiBuffer, error) {
+	packet := buf.New()
+	packet.Extend(buf.Size)
+	sPacket := sing_buf.With(packet.Bytes())
+	destination, err := p.ReadPacket(sPacket)
+	if err != nil {
+		packet.Release()
+		return nil, err
+	}
+	packet.Clear()
+	packet.Resize(int32(sPacket.Start()), int32(sPacket.Start()+sPacket.Len()))
+	destinationX := singbridge.ToDestination(destination, net.Network_UDP)
+	packet.UDP = &destinationX
+	return buf.MultiBuffer{packet}, nil
+}
+
+func (p *PacketConn) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	defer buf.ReleaseMulti(mb)
+	for _, buffer := range mb {
+		destination := sing_common.PtrValueOrDefault(buffer.UDP)
+		err := p.PacketConn.WritePacket(sing_buf.As(buffer.Bytes()), singbridge.ToSocksaddr(destination))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
--- a/app/tun/tun.go
+++ b/app/tun/tun.go
@@ -0,0 +1,296 @@
+package tun
+
+import (
+	"context"
+	"net/netip"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/sagernet/sing-tun"
+	sing_common "github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/control"
+	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/ranges"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/routing"
+	features_tun "github.com/xtls/xray-core/features/tun"
+	"github.com/xtls/xray-core/transport"
+	"github.com/xtls/xray-core/transport/internet"
+)
+
+//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
+
+func init() {
+	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
+		return New(ctx, cfg.(*Config))
+	}))
+}
+
+var TunInitializer features_tun.Interface = (*Tun)(nil)
+
+type Tun struct {
+	ctx                    context.Context
+	dispatcher             routing.Dispatcher
+	logger                 logger.ContextLogger
+	tunOptions             tun.Options
+	stack                  string
+	endpointIndependentNat bool
+	udpTimeout             int64
+	tunIf                  tun.Tun
+	tunStack               tun.Stack
+	networkMonitor         tun.NetworkUpdateMonitor
+	interfaceMonitor       tun.DefaultInterfaceMonitor
+	packageManager         tun.PackageManager
+	interfaceFinder        *myInterfaceFinder
+}
+
+func New(ctx context.Context, config *Config) (*Tun, error) {
+	instance := core.MustFromContext(ctx)
+	tunInterface := &Tun{
+		ctx:                    ctx,
+		dispatcher:             instance.GetFeature(routing.DispatcherType()).(routing.Dispatcher),
+		logger:                 singbridge.NewLogger(newError),
+		stack:                  config.Stack,
+		endpointIndependentNat: config.EndpointIndependentNat,
+		udpTimeout:             int64(5 * time.Minute.Seconds()),
+		interfaceFinder:        new(myInterfaceFinder),
+	}
+	networkUpdateMonitor, err := tun.NewNetworkUpdateMonitor(tunInterface)
+	if err != nil {
+		return nil, err
+	}
+	defaultInterfaceMonitor, err := tun.NewDefaultInterfaceMonitor(networkUpdateMonitor, tun.DefaultInterfaceMonitorOptions{
+		OverrideAndroidVPN: config.OverrideAndroidVpn,
+	})
+	if err != nil {
+		return nil, err
+	}
+	defaultInterfaceMonitor.RegisterCallback(tunInterface.notifyNetworkUpdate)
+	if config.AutoDetectInterface {
+		networkUpdateMonitor.RegisterCallback(tunInterface.interfaceFinder.update)
+		const useInterfaceName = runtime.GOOS == "linux" || runtime.GOOS == "android"
+		bindFunc := control.BindToInterfaceFunc(tunInterface.interfaceFinder, func(network string, address string) (interfaceName string, interfaceIndex int) {
+			remoteAddr := M.ParseSocksaddr(address).Addr
+			if useInterfaceName {
+				return defaultInterfaceMonitor.DefaultInterfaceName(remoteAddr), -1
+			} else {
+				return "", defaultInterfaceMonitor.DefaultInterfaceIndex(remoteAddr)
+			}
+		})
+		internet.UseAlternativeSystemDialer(nil)
+		internet.RegisterDialerController(bindFunc)
+		internet.RegisterListenerController(bindFunc)
+	}
+	if runtime.GOOS == "android" {
+		packageManage, err := tun.NewPackageManager(tunInterface)
+		if err != nil {
+			return nil, err
+		}
+		tunInterface.packageManager = packageManage
+	}
+	tunInterface.networkMonitor = networkUpdateMonitor
+	tunInterface.interfaceMonitor = defaultInterfaceMonitor
+	tunName := config.InterfaceName
+	if tunName == "" {
+		tunName = tun.CalculateInterfaceName("")
+	}
+	tunMTU := config.Mtu
+	if tunMTU == 0 {
+		tunMTU = 9000
+	}
+	includeUID := uidToRange(config.IncludeUid)
+	if len(config.IncludeUidRange) > 0 {
+		var err error
+		includeUID, err = parseRange(includeUID, config.IncludeUidRange)
+		if err != nil {
+			return nil, E.Cause(err, "parse include_uid_range")
+		}
+	}
+	excludeUID := uidToRange(config.ExcludeUid)
+	if len(config.ExcludeUidRange) > 0 {
+		var err error
+		excludeUID, err = parseRange(excludeUID, config.ExcludeUidRange)
+		if err != nil {
+			return nil, E.Cause(err, "parse exclude_uid_range")
+		}
+	}
+	if config.UdpTimeout != 0 {
+		tunInterface.udpTimeout = config.UdpTimeout
+	}
+	tunInterface.tunOptions = tun.Options{
+		Name:              tunName,
+		Inet4Address:      sing_common.Map(config.Inet4Address, netip.MustParsePrefix),
+		Inet6Address:      sing_common.Map(config.Inet6Address, netip.MustParsePrefix),
+		MTU:               tunMTU,
+		AutoRoute:         config.AutoRoute,
+		StrictRoute:       config.StrictRoute,
+		Inet4RouteAddress: sing_common.Map(config.Inet4RouteAddress, netip.MustParsePrefix),
+		Inet6RouteAddress: sing_common.Map(config.Inet6RouteAddress, netip.MustParsePrefix),
+		IncludeUID:        includeUID,
+		ExcludeUID:        excludeUID,
+		IncludeAndroidUser: sing_common.Map(config.IncludeAndroidUser, func(it int32) int {
+			return int(it)
+		}),
+		IncludePackage:   config.IncludePackage,
+		ExcludePackage:   config.ExcludePackage,
+		InterfaceMonitor: defaultInterfaceMonitor,
+		TableIndex:       2022,
+	}
+	return tunInterface, nil
+}
+
+func (t *Tun) Type() interface{} {
+	return features_tun.InterfaceType()
+}
+
+func (t *Tun) Start() error {
+	err := t.interfaceMonitor.Start()
+	if err != nil {
+		return err
+	}
+	err = t.networkMonitor.Start()
+	if err != nil {
+		return err
+	}
+	if runtime.GOOS == "android" {
+		err = t.packageManager.Start()
+		if err != nil {
+			return err
+		}
+		t.tunOptions.BuildAndroidRules(t.packageManager, t)
+	}
+	tunIf, err := tun.New(t.tunOptions)
+	if err != nil {
+		return E.Cause(err, "configure tun interface")
+	}
+	t.tunIf = tunIf
+	t.tunStack, err = tun.NewStack(t.stack, tun.StackOptions{
+		Context:                t.ctx,
+		Tun:                    tunIf,
+		MTU:                    t.tunOptions.MTU,
+		Name:                   t.tunOptions.Name,
+		Inet4Address:           t.tunOptions.Inet4Address,
+		Inet6Address:           t.tunOptions.Inet6Address,
+		EndpointIndependentNat: t.endpointIndependentNat,
+		UDPTimeout:             t.udpTimeout,
+		Handler:                t,
+		Logger:                 t.logger,
+	})
+	if err != nil {
+		return err
+	}
+	err = t.tunStack.Start()
+	if err != nil {
+		return err
+	}
+	t.logger.Info("tun started at ", t.tunOptions.Name)
+	return nil
+}
+
+func (t *Tun) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
+	sid := session.NewID()
+	ctx = session.ContextWithID(ctx, sid)
+	t.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
+	t.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
+	ctx = session.ContextWithInbound(ctx, &session.Inbound{
+		Source: net.DestinationFromAddr(metadata.Source.TCPAddr()),
+		Conn:   conn,
+	})
+	wConn := singbridge.NewConn(conn)
+	_ = t.dispatcher.DispatchLink(ctx, singbridge.ToDestination(metadata.Destination, net.Network_TCP), &transport.Link{
+		Reader: wConn,
+		Writer: wConn,
+	})
+	conn.Close()
+	return nil
+}
+
+func (t *Tun) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
+	sid := session.NewID()
+	ctx = session.ContextWithID(ctx, sid)
+	t.logger.InfoContext(ctx, "inbound packet connection from ", metadata.Source)
+	t.logger.InfoContext(ctx, "inbound packet connection to ", metadata.Destination)
+	ctx = session.ContextWithInbound(ctx, &session.Inbound{
+		Source: net.DestinationFromAddr(metadata.Source.UDPAddr()),
+	})
+	pc := &PacketConn{conn}
+	_ = t.dispatcher.DispatchLink(ctx, singbridge.ToDestination(metadata.Destination, net.Network_UDP), &transport.Link{
+		Reader: pc,
+		Writer: pc,
+	})
+	conn.Close()
+	return nil
+}
+
+func (t *Tun) Close() error {
+	return sing_common.Close(
+		t.packageManager,
+		t.interfaceMonitor,
+		t.networkMonitor,
+		t.tunStack,
+		t.tunIf,
+	)
+}
+
+func (t *Tun) OnPackagesUpdated(packages int, sharedUsers int) {
+	t.logger.Info("updated packages list: ", packages, " packages, ", sharedUsers, " shared users")
+}
+
+func (t *Tun) NewError(ctx context.Context, err error) {
+}
+
+func (t *Tun) notifyNetworkUpdate(int) error {
+	if runtime.GOOS == "android" {
+		var vpnStatus string
+		if t.interfaceMonitor.AndroidVPNEnabled() {
+			vpnStatus = "enabled"
+		} else {
+			vpnStatus = "disabled"
+		}
+		t.logger.Info("updated default interface ", t.interfaceMonitor.DefaultInterfaceName(netip.IPv4Unspecified()), ", index ", t.interfaceMonitor.DefaultInterfaceIndex(netip.IPv4Unspecified()), ", vpn ", vpnStatus)
+	} else {
+		t.logger.Info("updated default interface ", t.interfaceMonitor.DefaultInterfaceName(netip.IPv4Unspecified()), ", index ", t.interfaceMonitor.DefaultInterfaceIndex(netip.IPv4Unspecified()))
+	}
+	return nil
+}
+
+func uidToRange(uidList []uint32) []ranges.Range[uint32] {
+	return sing_common.Map(uidList, func(uid uint32) ranges.Range[uint32] {
+		return ranges.NewSingle(uint32(uid))
+	})
+}
+
+func parseRange(uidRanges []ranges.Range[uint32], rangeList []string) ([]ranges.Range[uint32], error) {
+	for _, uidRange := range rangeList {
+		if !strings.Contains(uidRange, ":") {
+			return nil, E.New("missing ':' in range: ", uidRange)
+		}
+		subIndex := strings.Index(uidRange, ":")
+		if subIndex == 0 {
+			return nil, E.New("missing range start: ", uidRange)
+		} else if subIndex == len(uidRange)-1 {
+			return nil, E.New("missing range end: ", uidRange)
+		}
+		var start, end uint64
+		var err error
+		start, err = strconv.ParseUint(uidRange[:subIndex], 10, 32)
+		if err != nil {
+			return nil, E.Cause(err, "parse range start")
+		}
+		end, err = strconv.ParseUint(uidRange[subIndex+1:], 10, 32)
+		if err != nil {
+			return nil, E.Cause(err, "parse range end")
+		}
+		uidRanges = append(uidRanges, ranges.New(uint32(start), uint32(end)))
+	}
+	return uidRanges, nil
+}
--- a/common/singbridge/destination.go
+++ b/common/singbridge/destination.go
@@ -0,0 +1,46 @@
+package singbridge
+
+import (
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/net"
+)
+
+func ToNetwork(network string) net.Network {
+	switch N.NetworkName(network) {
+	case N.NetworkTCP:
+		return net.Network_TCP
+	case N.NetworkUDP:
+		return net.Network_UDP
+	default:
+		return net.Network_Unknown
+	}
+}
+
+func ToDestination(socksaddr M.Socksaddr, network net.Network) net.Destination {
+	if socksaddr.IsFqdn() {
+		return net.Destination{
+			Network: network,
+			Address: net.DomainAddress(socksaddr.Fqdn),
+			Port:    net.Port(socksaddr.Port),
+		}
+	} else {
+		return net.Destination{
+			Network: network,
+			Address: net.IPAddress(socksaddr.Addr.AsSlice()),
+			Port:    net.Port(socksaddr.Port),
+		}
+	}
+}
+
+func ToSocksaddr(destination net.Destination) M.Socksaddr {
+	var addr M.Socksaddr
+	switch destination.Address.Family() {
+	case net.AddressFamilyDomain:
+		addr.Fqdn = destination.Address.Domain()
+	default:
+		addr.Addr = M.AddrFromIP(destination.Address.IP())
+	}
+	addr.Port = uint16(destination.Port)
+	return addr
+}
--- a/common/singbridge/dialer.go
+++ b/common/singbridge/dialer.go
@@ -0,0 +1,59 @@
+package singbridge
+
+import (
+	"context"
+	"os"
+
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/proxy"
+	"github.com/xtls/xray-core/transport"
+	"github.com/xtls/xray-core/transport/internet"
+	"github.com/xtls/xray-core/transport/pipe"
+)
+
+var _ N.Dialer = (*XrayDialer)(nil)
+
+type XrayDialer struct {
+	internet.Dialer
+}
+
+func NewDialer(dialer internet.Dialer) *XrayDialer {
+	return &XrayDialer{dialer}
+}
+
+func (d *XrayDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	return d.Dialer.Dial(ctx, ToDestination(destination, ToNetwork(network)))
+}
+
+func (d *XrayDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	return nil, os.ErrInvalid
+}
+
+type XrayOutboundDialer struct {
+	outbound proxy.Outbound
+	dialer   internet.Dialer
+}
+
+func NewOutboundDialer(outbound proxy.Outbound, dialer internet.Dialer) *XrayOutboundDialer {
+	return &XrayOutboundDialer{outbound, dialer}
+}
+
+func (d *XrayOutboundDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
+	ctx = session.ContextWithOutbound(context.Background(), &session.Outbound{
+		Target: ToDestination(destination, ToNetwork(network)),
+	})
+	opts := []pipe.Option{pipe.WithSizeLimit(64 * 1024)}
+	uplinkReader, uplinkWriter := pipe.New(opts...)
+	downlinkReader, downlinkWriter := pipe.New(opts...)
+	conn := cnc.NewConnection(cnc.ConnectionInputMulti(downlinkWriter), cnc.ConnectionOutputMulti(uplinkReader))
+	go d.outbound.Process(ctx, &transport.Link{Reader: downlinkReader, Writer: uplinkWriter}, d.dialer)
+	return conn, nil
+}
+
+func (d *XrayOutboundDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
+	return nil, os.ErrInvalid
+}
--- a/common/singbridge/error.go
+++ b/common/singbridge/error.go
@@ -0,0 +1,10 @@
+package singbridge
+
+import E "github.com/sagernet/sing/common/exceptions"
+
+func ReturnError(err error) error {
+	if E.IsClosedOrCanceled(err) {
+		return nil
+	}
+	return err
+}
--- a/common/singbridge/handler.go
+++ b/common/singbridge/handler.go
@@ -0,0 +1,51 @@
+package singbridge
+
+import (
+	"context"
+	"io"
+
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/transport"
+)
+
+var (
+	_ N.TCPConnectionHandler = (*Dispatcher)(nil)
+	_ N.UDPConnectionHandler = (*Dispatcher)(nil)
+)
+
+type Dispatcher struct {
+	upstream     routing.Dispatcher
+	newErrorFunc func(values ...any) *errors.Error
+}
+
+func NewDispatcher(dispatcher routing.Dispatcher, newErrorFunc func(values ...any) *errors.Error) *Dispatcher {
+	return &Dispatcher{
+		upstream:     dispatcher,
+		newErrorFunc: newErrorFunc,
+	}
+}
+
+func (d *Dispatcher) NewConnection(ctx context.Context, conn net.Conn, metadata M.Metadata) error {
+	xConn := NewConn(conn)
+	return d.upstream.DispatchLink(ctx, ToDestination(metadata.Destination, net.Network_TCP), &transport.Link{
+		Reader: xConn,
+		Writer: xConn,
+	})
+}
+
+func (d *Dispatcher) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
+	return d.upstream.DispatchLink(ctx, ToDestination(metadata.Destination, net.Network_UDP), &transport.Link{
+		Reader: buf.NewPacketReader(conn.(io.Reader)),
+		Writer: buf.NewWriter(conn.(io.Writer)),
+	})
+}
+
+func (d *Dispatcher) NewError(ctx context.Context, err error) {
+	d.newErrorFunc(err).WriteToLog(session.ExportIDToError(ctx))
+}
--- a/common/singbridge/logger.go
+++ b/common/singbridge/logger.go
@@ -0,0 +1,71 @@
+package singbridge
+
+import (
+	"context"
+
+	"github.com/sagernet/sing/common/logger"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/session"
+)
+
+var _ logger.ContextLogger = (*XrayLogger)(nil)
+
+type XrayLogger struct {
+	newError func(values ...any) *errors.Error
+}
+
+func NewLogger(newErrorFunc func(values ...any) *errors.Error) *XrayLogger {
+	return &XrayLogger{
+		newErrorFunc,
+	}
+}
+
+func (l *XrayLogger) Trace(args ...any) {
+}
+
+func (l *XrayLogger) Debug(args ...any) {
+	l.newError(args...).AtDebug().WriteToLog()
+}
+
+func (l *XrayLogger) Info(args ...any) {
+	l.newError(args...).AtInfo().WriteToLog()
+}
+
+func (l *XrayLogger) Warn(args ...any) {
+	l.newError(args...).AtWarning().WriteToLog()
+}
+
+func (l *XrayLogger) Error(args ...any) {
+	l.newError(args...).AtError().WriteToLog()
+}
+
+func (l *XrayLogger) Fatal(args ...any) {
+}
+
+func (l *XrayLogger) Panic(args ...any) {
+}
+
+func (l *XrayLogger) TraceContext(ctx context.Context, args ...any) {
+}
+
+func (l *XrayLogger) DebugContext(ctx context.Context, args ...any) {
+	l.newError(args...).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+}
+
+func (l *XrayLogger) InfoContext(ctx context.Context, args ...any) {
+	l.newError(args...).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+}
+
+func (l *XrayLogger) WarnContext(ctx context.Context, args ...any) {
+	l.newError(args...).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+}
+
+func (l *XrayLogger) ErrorContext(ctx context.Context, args ...any) {
+	l.newError(args...).AtError().WriteToLog(session.ExportIDToError(ctx))
+}
+
+func (l *XrayLogger) FatalContext(ctx context.Context, args ...any) {
+}
+
+func (l *XrayLogger) PanicContext(ctx context.Context, args ...any) {
+}
--- a/common/singbridge/packet.go
+++ b/common/singbridge/packet.go
@@ -0,0 +1,82 @@
+package singbridge
+
+import (
+	"context"
+
+	B "github.com/sagernet/sing/common/buf"
+	"github.com/sagernet/sing/common/bufio"
+	M "github.com/sagernet/sing/common/metadata"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/transport"
+)
+
+func CopyPacketConn(ctx context.Context, inboundConn net.Conn, link *transport.Link, destination net.Destination, serverConn net.PacketConn) error {
+	conn := &PacketConnWrapper{
+		Reader: link.Reader,
+		Writer: link.Writer,
+		Dest:   destination,
+		Conn:   inboundConn,
+	}
+	return ReturnError(bufio.CopyPacketConn(ctx, conn, bufio.NewPacketConn(serverConn)))
+}
+
+type PacketConnWrapper struct {
+	buf.Reader
+	buf.Writer
+	net.Conn
+	Dest   net.Destination
+	cached buf.MultiBuffer
+}
+
+func (w *PacketConnWrapper) ReadPacket(buffer *B.Buffer) (M.Socksaddr, error) {
+	if w.cached != nil {
+		mb, bb := buf.SplitFirst(w.cached)
+		if bb == nil {
+			w.cached = nil
+		} else {
+			buffer.Write(bb.Bytes())
+			w.cached = mb
+			var destination net.Destination
+			if bb.UDP != nil {
+				destination = *bb.UDP
+			} else {
+				destination = w.Dest
+			}
+			bb.Release()
+			return ToSocksaddr(destination), nil
+		}
+	}
+	mb, err := w.ReadMultiBuffer()
+	if err != nil {
+		return M.Socksaddr{}, err
+	}
+	nb, bb := buf.SplitFirst(mb)
+	if bb == nil {
+		return M.Socksaddr{}, nil
+	} else {
+		buffer.Write(bb.Bytes())
+		w.cached = nb
+		var destination net.Destination
+		if bb.UDP != nil {
+			destination = *bb.UDP
+		} else {
+			destination = w.Dest
+		}
+		bb.Release()
+		return ToSocksaddr(destination), nil
+	}
+}
+
+func (w *PacketConnWrapper) WritePacket(buffer *B.Buffer, destination M.Socksaddr) error {
+	vBuf := buf.New()
+	vBuf.Write(buffer.Bytes())
+	endpoint := ToDestination(destination, net.Network_UDP)
+	vBuf.UDP = &endpoint
+	return w.Writer.WriteMultiBuffer(buf.MultiBuffer{vBuf})
+}
+
+func (w *PacketConnWrapper) Close() error {
+	buf.ReleaseMulti(w.cached)
+	return nil
+}
--- a/common/singbridge/pipe.go
+++ b/common/singbridge/pipe.go
@@ -0,0 +1,61 @@
+package singbridge
+
+import (
+	"context"
+	"io"
+	"net"
+
+	"github.com/sagernet/sing/common/bufio"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/transport"
+)
+
+func CopyConn(ctx context.Context, inboundConn net.Conn, link *transport.Link, serverConn net.Conn) error {
+	conn := &PipeConnWrapper{
+		W:    link.Writer,
+		Conn: inboundConn,
+	}
+	if ir, ok := link.Reader.(io.Reader); ok {
+		conn.R = ir
+	} else {
+		conn.R = &buf.BufferedReader{Reader: link.Reader}
+	}
+	return ReturnError(bufio.CopyConn(ctx, conn, serverConn))
+}
+
+type PipeConnWrapper struct {
+	R io.Reader
+	W buf.Writer
+	net.Conn
+}
+
+func (w *PipeConnWrapper) Close() error {
+	return nil
+}
+
+func (w *PipeConnWrapper) Read(b []byte) (n int, err error) {
+	return w.R.Read(b)
+}
+
+func (w *PipeConnWrapper) Write(p []byte) (n int, err error) {
+	n = len(p)
+	var mb buf.MultiBuffer
+	pLen := len(p)
+	for pLen > 0 {
+		buffer := buf.New()
+		if pLen > buf.Size {
+			_, err = buffer.Write(p[:buf.Size])
+			p = p[buf.Size:]
+		} else {
+			buffer.Write(p)
+		}
+		pLen -= int(buffer.Len())
+		mb = append(mb, buffer)
+	}
+	err = w.W.WriteMultiBuffer(mb)
+	if err != nil {
+		n = 0
+		buf.ReleaseMulti(mb)
+	}
+	return
+}
--- a/common/singbridge/reader.go
+++ b/common/singbridge/reader.go
@@ -0,0 +1,66 @@
+package singbridge
+
+import (
+	"time"
+
+	"github.com/sagernet/sing/common"
+	"github.com/sagernet/sing/common/bufio"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/net"
+)
+
+var (
+	_ buf.Reader        = (*Conn)(nil)
+	_ buf.TimeoutReader = (*Conn)(nil)
+	_ buf.Writer        = (*Conn)(nil)
+)
+
+type Conn struct {
+	net.Conn
+	writer N.VectorisedWriter
+}
+
+func NewConn(conn net.Conn) *Conn {
+	writer, _ := bufio.CreateVectorisedWriter(conn)
+	return &Conn{
+		Conn:   conn,
+		writer: writer,
+	}
+}
+
+func (c *Conn) ReadMultiBuffer() (buf.MultiBuffer, error) {
+	buffer, err := buf.ReadBuffer(c.Conn)
+	if err != nil {
+		return nil, err
+	}
+	return buf.MultiBuffer{buffer}, nil
+}
+
+func (c *Conn) ReadMultiBufferTimeout(duration time.Duration) (buf.MultiBuffer, error) {
+	err := c.SetReadDeadline(time.Now().Add(duration))
+	if err != nil {
+		return nil, err
+	}
+	defer c.SetReadDeadline(time.Time{})
+	return c.ReadMultiBuffer()
+}
+
+func (c *Conn) WriteMultiBuffer(bufferList buf.MultiBuffer) error {
+	defer buf.ReleaseMulti(bufferList)
+	if c.writer != nil {
+		bytesList := make([][]byte, len(bufferList))
+		for i, buffer := range bufferList {
+			bytesList[i] = buffer.Bytes()
+		}
+		return common.Error(bufio.WriteVectorised(c.writer, bytesList))
+	}
+	// Since this conn is only used by tun, we don't force buffer writes to merge.
+	for _, buffer := range bufferList {
+		_, err := c.Conn.Write(buffer.Bytes())
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
--- a/common/xudp/xudp_test.go
+++ b/common/xudp/xudp_test.go
@@ -11,7 +11,7 @@ import (
 func TestXudpReadWrite(t *testing.T) {
 	addr, _ := net.ParseDestination("tcp:127.0.0.1:1345")
 	mb := make(buf.MultiBuffer, 0, 16)
-	m := buf.MultiBufferContainer {
+	m := buf.MultiBufferContainer{
 		MultiBuffer: mb,
 	}
 	var arr [8]byte
@@ -33,4 +33,4 @@ func TestXudpReadWrite(t *testing.T) {
 	if dest[0].UDP.Port != 1345 {
 		t.Error("failed to parse xudp buffer")
 	}
-}
+}
--- a/features/tun/tun.go
+++ b/features/tun/tun.go
@@ -0,0 +1,11 @@
+package tun
+
+import "github.com/xtls/xray-core/features"
+
+type Interface interface {
+	features.Feature
+}
+
+func InterfaceType() interface{} {
+	return (*Interface)(nil)
+}
--- a/go.mod
+++ b/go.mod
@@ -11,9 +11,9 @@ require (
 	github.com/miekg/dns v1.1.53
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.7.0
-	github.com/quic-go/quic-go v0.33.0
+	github.com/quic-go/quic-go v0.34.0
 	github.com/refraction-networking/utls v1.3.2
-	github.com/sagernet/sing v0.2.3
+	github.com/sagernet/sing v0.2.4
 	github.com/sagernet/sing-shadowsocks v0.2.1
 	github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c
 	github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb
@@ -37,6 +37,7 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-metro v0.0.0-20211217172704-adc40b04c140 // indirect
 	github.com/francoispqt/gojay v1.2.13 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/gaukas/godicttls v0.0.3 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/google/btree v1.1.2 // indirect
@@ -48,6 +49,10 @@ require (
 	github.com/quic-go/qtls-go1-19 v0.3.2 // indirect
 	github.com/quic-go/qtls-go1-20 v0.2.2 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
+	github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
+	github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 // indirect
+	github.com/sagernet/sing-tun v0.1.4 // indirect
+	github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	golang.org/x/exp v0.0.0-20230321023759-10a507213a29 // indirect
 	golang.org/x/mod v0.10.0 // indirect
--- a/go.sum
+++ b/go.sum
@@ -33,6 +33,8 @@ github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI
 github.com/francoispqt/gojay v1.2.13 h1:d2m3sFjloqoIUQU3TsHBgj6qg/BVGlTBeHDUmyJnXKk=
 github.com/francoispqt/gojay v1.2.13/go.mod h1:ehT5mTG4ua4581f1++1WLG0vPdaA9HaiDsoyrBGkyDY=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
+github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
 github.com/gaukas/godicttls v0.0.3 h1:YNDIf0d9adcxOijiLrEzpfZGAkNwLRzPaG6OjU7EITk=
 github.com/gaukas/godicttls v0.0.3/go.mod h1:l6EenT4TLWgTdwslVb4sEMOCf7Bv0JAK67deKr9/NCI=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -136,17 +138,26 @@ github.com/quic-go/qtls-go1-19 v0.3.2 h1:tFxjCFcTQzK+oMxG6Zcvp4Dq8dx4yD3dDiIiyc8
 github.com/quic-go/qtls-go1-19 v0.3.2/go.mod h1:ySOI96ew8lnoKPtSqx2BlI5wCpUVPT05RMAlajtnyOI=
 github.com/quic-go/qtls-go1-20 v0.2.2 h1:WLOPx6OY/hxtTxKV1Zrq20FtXtDEkeY00CGQm8GEa3E=
 github.com/quic-go/qtls-go1-20 v0.2.2/go.mod h1:JKtK6mjbAVcUTN/9jZpvLbGxvdWIKS8uT7EiStoU1SM=
-github.com/quic-go/quic-go v0.33.0 h1:ItNoTDN/Fm/zBlq769lLJc8ECe9gYaW40veHCCco7y0=
-github.com/quic-go/quic-go v0.33.0/go.mod h1:YMuhaAV9/jIu0XclDXwZPAsP/2Kgr5yMYhe9oxhhOFA=
+github.com/quic-go/quic-go v0.34.0 h1:OvOJ9LFjTySgwOTYUZmNoq0FzVicP8YujpV0kB7m2lU=
+github.com/quic-go/quic-go v0.34.0/go.mod h1:+4CVgVppm0FNjpG3UcX8Joi/frKOH7/ciD5yGcwOO1g=
 github.com/refraction-networking/utls v1.3.2 h1:o+AkWB57mkcoW36ET7uJ002CpBWHu0KPxi6vzxvPnv8=
 github.com/refraction-networking/utls v1.3.2/go.mod h1:fmoaOww2bxzzEpIKOebIsnBvjQpqP7L2vcm/9KUfm/E=
 github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 h1:f/FNXud6gA3MNr8meMVVGxhp+QBTqY91tM8HjEuMjGg=
 github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3/go.mod h1:HgjTstvQsPGkxUsCd2KWxErBblirPizecHcpD3ffK+s=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
+github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
+github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h1:QUQ4RRHD6hGGHdFMEtR8T2P6GS6R3D/CXKdaYHKKXms=
+github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 h1:iL5gZI3uFp0X6EslacyapiRz7LLSJyr4RajF/BhMVyE=
+github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
+github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.2.3 h1:V50MvZ4c3Iij2lYFWPlzL1PyipwSzjGeN9x+Ox89vpk=
 github.com/sagernet/sing v0.2.3/go.mod h1:Ta8nHnDLAwqySzKhGoKk4ZIB+vJ3GTKj7UPrWYvM+4w=
+github.com/sagernet/sing v0.2.4 h1:gC8BR5sglbJZX23RtMyFa8EETP9YEUADhfbEzU1yVbo=
+github.com/sagernet/sing v0.2.4/go.mod h1:Ta8nHnDLAwqySzKhGoKk4ZIB+vJ3GTKj7UPrWYvM+4w=
 github.com/sagernet/sing-shadowsocks v0.2.1 h1:FvdLQOqpvxHBJUcUe4fvgiYP2XLLwH5i1DtXQviVEPw=
 github.com/sagernet/sing-shadowsocks v0.2.1/go.mod h1:T/OgurSjsAe+Ug3+6PprXjmgHFmJidjOvQcjXGTKb3I=
+github.com/sagernet/sing-tun v0.1.4 h1:Fa6kgvuM2fPbPu3R97S8L8NgaD5lJq3wQorNuTb5oqo=
+github.com/sagernet/sing-tun v0.1.4/go.mod h1:7BrtP7NMp9FK5oVsZWg92b7yFrD+sM2+udapFurReyw=
 github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c h1:vK2wyt9aWYHHvNLWniwijBu/n4pySypiKRhN32u/JGo=
 github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c/go.mod h1:euOmN6O5kk9dQmgSS8Df4psAl3TCjxOz0NW60EWkSaI=
 github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb h1:XfLJSPIOUX+osiMraVgIrMR27uMXnRJWGm1+GL8/63U=
@@ -190,6 +201,8 @@ github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e h1:5QefA066A1tF
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e/go.mod h1:5t19P9LBIrNamL6AcMQOncg/r10y3Pc01AbHeMhwlpU=
 github.com/viant/assertly v0.4.8/go.mod h1:aGifi++jvCrUaklKEKT0BU95igDNaqkvz+49uaYMPRU=
 github.com/viant/toolbox v0.24.0/go.mod h1:OxMCG57V0PXuIP2HNQrtJf2CjqdmbrOx5EkMILuUhzM=
+github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695APm9hlsSMoOoE65U4/TcqNj90mc69Rlg=
+github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
 github.com/xtls/reality v0.0.0-20230331223127-176a94313eda h1:psRJD2RrZbnI0OWyHvXfgYCPqlRM5q5SPDcjDoDBWhE=
 github.com/xtls/reality v0.0.0-20230331223127-176a94313eda/go.mod h1:rkuAY1S9F8eI8gDiPDYvACE8e2uwkyg8qoOTuwWov7Y=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
@@ -249,12 +262,15 @@ golang.org/x/sys v0.0.0-20181029174526-d69651ed3497/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190316082340-a2f829d7f35f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200217220822-9197077df867/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220731174439-a90be440212d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU=
 golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
--- a/infra/conf/transport_internet.go
+++ b/infra/conf/transport_internet.go
@@ -617,6 +617,7 @@ type SocketConfig struct {
 	TCPKeepAliveIdle     int32       `json:"tcpKeepAliveIdle"`
 	TCPCongestion        string      `json:"tcpCongestion"`
 	TCPWindowClamp       int32       `json:"tcpWindowClamp"`
+	TCPUserTimeout       int32       `json:"tcpUserTimeout"`
 	V6only               bool        `json:"v6only"`
 	Interface            string      `json:"interface"`
 }
@@ -669,6 +670,7 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
 		TcpKeepAliveIdle:     c.TCPKeepAliveIdle,
 		TcpCongestion:        c.TCPCongestion,
 		TcpWindowClamp:       c.TCPWindowClamp,
+		TcpUserTimeout:       c.TCPUserTimeout,
 		V6Only:               c.V6only,
 		Interface:            c.Interface,
 	}, nil
--- a/infra/conf/tun.go
+++ b/infra/conf/tun.go
@@ -0,0 +1,113 @@
+package conf
+
+import (
+	"encoding/json"
+	"net/netip"
+
+	"github.com/sagernet/sing/common"
+	"github.com/xtls/xray-core/app/tun"
+)
+
+type TunConfig struct {
+	InterfaceName          string                 `json:"interface_name,omitempty"`
+	MTU                    uint32                 `json:"mtu,omitempty"`
+	Inet4Address           Listable[ListenPrefix] `json:"inet4_address,omitempty"`
+	Inet6Address           Listable[ListenPrefix] `json:"inet6_address,omitempty"`
+	AutoRoute              bool                   `json:"auto_route,omitempty"`
+	StrictRoute            bool                   `json:"strict_route,omitempty"`
+	Inet4RouteAddress      Listable[ListenPrefix] `json:"inet4_route_address,omitempty"`
+	Inet6RouteAddress      Listable[ListenPrefix] `json:"inet6_route_address,omitempty"`
+	IncludeUID             Listable[uint32]       `json:"include_uid,omitempty"`
+	IncludeUIDRange        Listable[string]       `json:"include_uid_range,omitempty"`
+	ExcludeUID             Listable[uint32]       `json:"exclude_uid,omitempty"`
+	ExcludeUIDRange        Listable[string]       `json:"exclude_uid_range,omitempty"`
+	IncludeAndroidUser     Listable[int]          `json:"include_android_user,omitempty"`
+	IncludePackage         Listable[string]       `json:"include_package,omitempty"`
+	ExcludePackage         Listable[string]       `json:"exclude_package,omitempty"`
+	EndpointIndependentNat bool                   `json:"endpoint_independent_nat,omitempty"`
+	UDPTimeout             int64                  `json:"udp_timeout,omitempty"`
+	Stack                  string                 `json:"stack,omitempty"`
+
+	AutoDetectInterface bool `json:"auto_detect_interface,omitempty"`
+	OverrideAndroidVPN  bool `json:"override_android_vpn,omitempty"`
+}
+
+func (f *TunConfig) Build() (*tun.Config, error) {
+	var config tun.Config
+	config.InterfaceName = f.InterfaceName
+	config.Mtu = f.MTU
+	config.Inet4Address = common.Map(common.Map(f.Inet4Address, ListenPrefix.Build), netip.Prefix.String)
+	config.Inet6Address = common.Map(common.Map(f.Inet6Address, ListenPrefix.Build), netip.Prefix.String)
+	config.AutoRoute = f.AutoRoute
+	config.StrictRoute = f.StrictRoute
+	config.Inet4RouteAddress = common.Map(common.Map(f.Inet4RouteAddress, ListenPrefix.Build), netip.Prefix.String)
+	config.Inet6RouteAddress = common.Map(common.Map(f.Inet6RouteAddress, ListenPrefix.Build), netip.Prefix.String)
+	config.IncludeUid = f.IncludeUID
+	config.IncludeUidRange = f.IncludeUIDRange
+	config.ExcludeUid = f.ExcludeUID
+	config.ExcludeUidRange = f.ExcludeUIDRange
+	config.IncludeAndroidUser = common.Map(f.IncludeAndroidUser, func(it int) int32 {
+		return int32(it)
+	})
+	config.IncludePackage = f.IncludePackage
+	config.ExcludePackage = f.ExcludePackage
+	config.EndpointIndependentNat = f.EndpointIndependentNat
+	config.UdpTimeout = f.UDPTimeout
+	config.Stack = f.Stack
+	// for xray
+	config.AutoDetectInterface = f.AutoDetectInterface
+	config.OverrideAndroidVpn = f.OverrideAndroidVPN
+	return &config, nil
+}
+
+type Listable[T comparable] []T
+
+func (l Listable[T]) MarshalJSON() ([]byte, error) {
+	arrayList := []T(l)
+	if len(arrayList) == 1 {
+		return json.Marshal(arrayList[0])
+	}
+	return json.Marshal(arrayList)
+}
+
+func (l *Listable[T]) UnmarshalJSON(content []byte) error {
+	err := json.Unmarshal(content, (*[]T)(l))
+	if err == nil {
+		return nil
+	}
+	var singleItem T
+	err = json.Unmarshal(content, &singleItem)
+	if err != nil {
+		return err
+	}
+	*l = []T{singleItem}
+	return nil
+}
+
+type ListenPrefix netip.Prefix
+
+func (p ListenPrefix) MarshalJSON() ([]byte, error) {
+	prefix := netip.Prefix(p)
+	if !prefix.IsValid() {
+		return json.Marshal(nil)
+	}
+	return json.Marshal(prefix.String())
+}
+
+func (p *ListenPrefix) UnmarshalJSON(bytes []byte) error {
+	var value string
+	err := json.Unmarshal(bytes, &value)
+	if err != nil {
+		return err
+	}
+	prefix, err := netip.ParsePrefix(value)
+	if err != nil {
+		return err
+	}
+	*p = ListenPrefix(prefix)
+	return nil
+}
+
+func (p ListenPrefix) Build() netip.Prefix {
+	return netip.Prefix(p)
+}
--- a/infra/conf/xray.go
+++ b/infra/conf/xray.go
@@ -410,6 +410,7 @@ type Config struct {
 	Reverse         *ReverseConfig         `json:"reverse"`
 	FakeDNS         *FakeDNSConfig         `json:"fakeDns"`
 	Observatory     *ObservatoryConfig     `json:"observatory"`
+	Tun             *TunConfig             `json:"tun"`
 }

 func (c *Config) findInboundTag(tag string) int {
@@ -474,6 +475,10 @@ func (c *Config) Override(o *Config, fn string) {
 		c.Observatory = o.Observatory
 	}

+	if o.Tun != nil {
+		c.Tun = o.Tun
+	}
+
 	// deprecated attrs... keep them for now
 	if o.InboundConfig != nil {
 		c.InboundConfig = o.InboundConfig
@@ -637,6 +642,14 @@ func (c *Config) Build() (*core.Config, error) {
 		config.App = append(config.App, serial.ToTypedMessage(r))
 	}

+	if c.Tun != nil {
+		r, err := c.Tun.Build()
+		if err != nil {
+			return nil, err
+		}
+		config.App = append(config.App, serial.ToTypedMessage(r))
+	}
+
 	var inbounds []InboundDetourConfig

 	if c.InboundConfig != nil {
--- a/main/distro/all/all.go
+++ b/main/distro/all/all.go
@@ -16,6 +16,7 @@ import (

 	// Developer preview services
 	_ "github.com/xtls/xray-core/app/observatory/command"
+	_ "github.com/xtls/xray-core/app/tun"

 	// Other optional features.
 	_ "github.com/xtls/xray-core/app/dns"
--- a/proxy/shadowsocks_2022/inbound.go
+++ b/proxy/shadowsocks_2022/inbound.go
@@ -17,6 +17,7 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/stat"
 )
@@ -74,7 +75,7 @@ func (i *Inbound) Process(ctx context.Context, network net.Network, connection s
 	ctx = session.ContextWithDispatcher(ctx, dispatcher)

 	if network == net.Network_TCP {
-		return returnError(i.service.NewConnection(ctx, connection, metadata))
+		return singbridge.ReturnError(i.service.NewConnection(ctx, connection, metadata))
 	} else {
 		reader := buf.NewReader(connection)
 		pc := &natPacketConn{connection}
@@ -82,7 +83,7 @@ func (i *Inbound) Process(ctx context.Context, network net.Network, connection s
 			mb, err := reader.ReadMultiBuffer()
 			if err != nil {
 				buf.ReleaseMulti(mb)
-				return returnError(err)
+				return singbridge.ReturnError(err)
 			}
 			for _, buffer := range mb {
 				packet := B.As(buffer.Bytes()).ToOwned()
@@ -112,16 +113,11 @@ func (i *Inbound) NewConnection(ctx context.Context, conn net.Conn, metadata M.M
 	})
 	newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	link, err := dispatcher.Dispatch(ctx, toDestination(metadata.Destination, net.Network_TCP))
+	link, err := dispatcher.Dispatch(ctx, singbridge.ToDestination(metadata.Destination, net.Network_TCP))
 	if err != nil {
 		return err
 	}
-	outConn := &pipeConnWrapper{
-		&buf.BufferedReader{Reader: link.Reader},
-		link.Writer,
-		conn,
-	}
-	return bufio.CopyConn(ctx, conn, outConn)
+	return singbridge.CopyConn(ctx, nil, link, conn)
 }

 func (i *Inbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
@@ -138,12 +134,12 @@ func (i *Inbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, me
 	})
 	newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	destination := toDestination(metadata.Destination, net.Network_UDP)
+	destination := singbridge.ToDestination(metadata.Destination, net.Network_UDP)
 	link, err := dispatcher.Dispatch(ctx, destination)
 	if err != nil {
 		return err
 	}
-	outConn := &packetConnWrapper{
+	outConn := &singbridge.PacketConnWrapper{
 		Reader: link.Reader,
 		Writer: link.Writer,
 		Dest:   destination,
--- a/proxy/shadowsocks_2022/inbound_multi.go
+++ b/proxy/shadowsocks_2022/inbound_multi.go
@@ -21,6 +21,7 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/common/uuid"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/stat"
@@ -163,7 +164,7 @@ func (i *MultiUserInbound) Process(ctx context.Context, network net.Network, con
 	ctx = session.ContextWithDispatcher(ctx, dispatcher)

 	if network == net.Network_TCP {
-		return returnError(i.service.NewConnection(ctx, connection, metadata))
+		return singbridge.ReturnError(i.service.NewConnection(ctx, connection, metadata))
 	} else {
 		reader := buf.NewReader(connection)
 		pc := &natPacketConn{connection}
@@ -171,7 +172,7 @@ func (i *MultiUserInbound) Process(ctx context.Context, network net.Network, con
 			mb, err := reader.ReadMultiBuffer()
 			if err != nil {
 				buf.ReleaseMulti(mb)
-				return returnError(err)
+				return singbridge.ReturnError(err)
 			}
 			for _, buffer := range mb {
 				packet := B.As(buffer.Bytes()).ToOwned()
@@ -203,16 +204,11 @@ func (i *MultiUserInbound) NewConnection(ctx context.Context, conn net.Conn, met
 	})
 	newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	link, err := dispatcher.Dispatch(ctx, toDestination(metadata.Destination, net.Network_TCP))
+	link, err := dispatcher.Dispatch(ctx, singbridge.ToDestination(metadata.Destination, net.Network_TCP))
 	if err != nil {
 		return err
 	}
-	outConn := &pipeConnWrapper{
-		&buf.BufferedReader{Reader: link.Reader},
-		link.Writer,
-		conn,
-	}
-	return bufio.CopyConn(ctx, conn, outConn)
+	return singbridge.CopyConn(ctx, conn, link, conn)
 }

 func (i *MultiUserInbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
@@ -231,12 +227,12 @@ func (i *MultiUserInbound) NewPacketConnection(ctx context.Context, conn N.Packe
 	})
 	newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	destination := toDestination(metadata.Destination, net.Network_UDP)
+	destination := singbridge.ToDestination(metadata.Destination, net.Network_UDP)
 	link, err := dispatcher.Dispatch(ctx, destination)
 	if err != nil {
 		return err
 	}
-	outConn := &packetConnWrapper{
+	outConn := &singbridge.PacketConnWrapper{
 		Reader: link.Reader,
 		Writer: link.Writer,
 		Dest:   destination,
--- a/proxy/shadowsocks_2022/inbound_relay.go
+++ b/proxy/shadowsocks_2022/inbound_relay.go
@@ -19,6 +19,7 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/common/uuid"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/stat"
@@ -66,7 +67,7 @@ func NewRelayServer(ctx context.Context, config *RelayServerConfig) (*RelayInbou
 		C.MapIndexed(config.Destinations, func(index int, it *RelayDestination) int { return index }),
 		C.Map(config.Destinations, func(it *RelayDestination) string { return it.Key }),
 		C.Map(config.Destinations, func(it *RelayDestination) M.Socksaddr {
-			return toSocksaddr(net.Destination{
+			return singbridge.ToSocksaddr(net.Destination{
 				Address: it.Address.AsAddress(),
 				Port:    net.Port(it.Port),
 			})
@@ -95,7 +96,7 @@ func (i *RelayInbound) Process(ctx context.Context, network net.Network, connect
 	ctx = session.ContextWithDispatcher(ctx, dispatcher)

 	if network == net.Network_TCP {
-		return returnError(i.service.NewConnection(ctx, connection, metadata))
+		return singbridge.ReturnError(i.service.NewConnection(ctx, connection, metadata))
 	} else {
 		reader := buf.NewReader(connection)
 		pc := &natPacketConn{connection}
@@ -103,7 +104,7 @@ func (i *RelayInbound) Process(ctx context.Context, network net.Network, connect
 			mb, err := reader.ReadMultiBuffer()
 			if err != nil {
 				buf.ReleaseMulti(mb)
-				return returnError(err)
+				return singbridge.ReturnError(err)
 			}
 			for _, buffer := range mb {
 				packet := B.As(buffer.Bytes()).ToOwned()
@@ -135,16 +136,11 @@ func (i *RelayInbound) NewConnection(ctx context.Context, conn net.Conn, metadat
 	})
 	newError("tunnelling request to tcp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	link, err := dispatcher.Dispatch(ctx, toDestination(metadata.Destination, net.Network_TCP))
+	link, err := dispatcher.Dispatch(ctx, singbridge.ToDestination(metadata.Destination, net.Network_TCP))
 	if err != nil {
 		return err
 	}
-	outConn := &pipeConnWrapper{
-		&buf.BufferedReader{Reader: link.Reader},
-		link.Writer,
-		conn,
-	}
-	return bufio.CopyConn(ctx, conn, outConn)
+	return singbridge.CopyConn(ctx, nil, link, conn)
 }

 func (i *RelayInbound) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
@@ -163,12 +159,12 @@ func (i *RelayInbound) NewPacketConnection(ctx context.Context, conn N.PacketCon
 	})
 	newError("tunnelling request to udp:", metadata.Destination).WriteToLog(session.ExportIDToError(ctx))
 	dispatcher := session.DispatcherFromContext(ctx)
-	destination := toDestination(metadata.Destination, net.Network_UDP)
+	destination := singbridge.ToDestination(metadata.Destination, net.Network_UDP)
 	link, err := dispatcher.Dispatch(ctx, destination)
 	if err != nil {
 		return err
 	}
-	outConn := &packetConnWrapper{
+	outConn := &singbridge.PacketConnWrapper{
 		Reader: link.Reader,
 		Writer: link.Writer,
 		Dest:   destination,
--- a/proxy/shadowsocks_2022/outbound.go
+++ b/proxy/shadowsocks_2022/outbound.go
@@ -2,7 +2,6 @@ package shadowsocks_2022

 import (
 	"context"
-	"io"
 	"runtime"
 	"time"

@@ -17,6 +16,7 @@ import (
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 )
@@ -93,7 +93,7 @@ func (o *Outbound) Process(ctx context.Context, link *transport.Link, dialer int
 	}

 	if network == net.Network_TCP {
-		serverConn := o.method.DialEarlyConn(connection, toSocksaddr(destination))
+		serverConn := o.method.DialEarlyConn(connection, singbridge.ToSocksaddr(destination))
 		var handshake bool
 		if timeoutReader, isTimeoutReader := link.Reader.(buf.TimeoutReader); isTimeoutReader {
 			mb, err := timeoutReader.ReadMultiBufferTimeout(time.Millisecond * 100)
@@ -128,17 +128,7 @@ func (o *Outbound) Process(ctx context.Context, link *transport.Link, dialer int
 				return newError("client handshake").Base(err)
 			}
 		}
-		conn := &pipeConnWrapper{
-			W:    link.Writer,
-			Conn: inboundConn,
-		}
-		if ir, ok := link.Reader.(io.Reader); ok {
-			conn.R = ir
-		} else {
-			conn.R = &buf.BufferedReader{Reader: link.Reader}
-		}
-
-		return returnError(bufio.CopyConn(ctx, conn, serverConn))
+		return singbridge.CopyConn(ctx, inboundConn, link, serverConn)
 	} else {
 		var packetConn N.PacketConn
 		if pc, isPacketConn := inboundConn.(N.PacketConn); isPacketConn {
@@ -146,7 +136,7 @@ func (o *Outbound) Process(ctx context.Context, link *transport.Link, dialer int
 		} else if nc, isNetPacket := inboundConn.(net.PacketConn); isNetPacket {
 			packetConn = bufio.NewPacketConn(nc)
 		} else {
-			packetConn = &packetConnWrapper{
+			packetConn = &singbridge.PacketConnWrapper{
 				Reader: link.Reader,
 				Writer: link.Writer,
 				Conn:   inboundConn,
@@ -155,14 +145,14 @@ func (o *Outbound) Process(ctx context.Context, link *transport.Link, dialer int
 		}

 		if o.uotClient != nil {
-			uConn, err := o.uotClient.DialEarlyConn(o.method.DialEarlyConn(connection, uot.RequestDestination(o.uotClient.Version)), false, toSocksaddr(destination))
+			uConn, err := o.uotClient.DialEarlyConn(o.method.DialEarlyConn(connection, uot.RequestDestination(o.uotClient.Version)), false, singbridge.ToSocksaddr(destination))
 			if err != nil {
 				return err
 			}
-			return returnError(bufio.CopyPacketConn(ctx, packetConn, uConn))
+			return singbridge.ReturnError(bufio.CopyPacketConn(ctx, packetConn, uConn))
 		} else {
 			serverConn := o.method.DialPacketConn(connection)
-			return returnError(bufio.CopyPacketConn(ctx, packetConn, serverConn))
+			return singbridge.ReturnError(bufio.CopyPacketConn(ctx, packetConn, serverConn))
 		}
 	}
 }
--- a/proxy/shadowsocks_2022/shadowsocks_2022.go
+++ b/proxy/shadowsocks_2022/shadowsocks_2022.go
@@ -1,145 +1,3 @@
 package shadowsocks_2022

-import (
-	"io"
-
-	B "github.com/sagernet/sing/common/buf"
-	E "github.com/sagernet/sing/common/exceptions"
-	M "github.com/sagernet/sing/common/metadata"
-	"github.com/xtls/xray-core/common/buf"
-	"github.com/xtls/xray-core/common/net"
-)
-
 //go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
-func toDestination(socksaddr M.Socksaddr, network net.Network) net.Destination {
-	if socksaddr.IsFqdn() {
-		return net.Destination{
-			Network: network,
-			Address: net.DomainAddress(socksaddr.Fqdn),
-			Port:    net.Port(socksaddr.Port),
-		}
-	} else {
-		return net.Destination{
-			Network: network,
-			Address: net.IPAddress(socksaddr.Addr.AsSlice()),
-			Port:    net.Port(socksaddr.Port),
-		}
-	}
-}
-
-func toSocksaddr(destination net.Destination) M.Socksaddr {
-	var addr M.Socksaddr
-	switch destination.Address.Family() {
-	case net.AddressFamilyDomain:
-		addr.Fqdn = destination.Address.Domain()
-	default:
-		addr.Addr = M.AddrFromIP(destination.Address.IP())
-	}
-	addr.Port = uint16(destination.Port)
-	return addr
-}
-
-type pipeConnWrapper struct {
-	R io.Reader
-	W buf.Writer
-	net.Conn
-}
-
-func (w *pipeConnWrapper) Close() error {
-	return nil
-}
-
-func (w *pipeConnWrapper) Read(b []byte) (n int, err error) {
-	return w.R.Read(b)
-}
-
-func (w *pipeConnWrapper) Write(p []byte) (n int, err error) {
-	n = len(p)
-	var mb buf.MultiBuffer
-	pLen := len(p)
-	for pLen > 0 {
-		buffer := buf.New()
-		if pLen > buf.Size {
-			_, err = buffer.Write(p[:buf.Size])
-			p = p[buf.Size:]
-		} else {
-			buffer.Write(p)
-		}
-		pLen -= int(buffer.Len())
-		mb = append(mb, buffer)
-	}
-	err = w.W.WriteMultiBuffer(mb)
-	if err != nil {
-		n = 0
-		buf.ReleaseMulti(mb)
-	}
-	return
-}
-
-type packetConnWrapper struct {
-	buf.Reader
-	buf.Writer
-	net.Conn
-	Dest   net.Destination
-	cached buf.MultiBuffer
-}
-
-func (w *packetConnWrapper) ReadPacket(buffer *B.Buffer) (M.Socksaddr, error) {
-	if w.cached != nil {
-		mb, bb := buf.SplitFirst(w.cached)
-		if bb == nil {
-			w.cached = nil
-		} else {
-			buffer.Write(bb.Bytes())
-			w.cached = mb
-			var destination net.Destination
-			if bb.UDP != nil {
-				destination = *bb.UDP
-			} else {
-				destination = w.Dest
-			}
-			bb.Release()
-			return toSocksaddr(destination), nil
-		}
-	}
-	mb, err := w.ReadMultiBuffer()
-	if err != nil {
-		return M.Socksaddr{}, err
-	}
-	nb, bb := buf.SplitFirst(mb)
-	if bb == nil {
-		return M.Socksaddr{}, nil
-	} else {
-		buffer.Write(bb.Bytes())
-		w.cached = nb
-		var destination net.Destination
-		if bb.UDP != nil {
-			destination = *bb.UDP
-		} else {
-			destination = w.Dest
-		}
-		bb.Release()
-		return toSocksaddr(destination), nil
-	}
-}
-
-func (w *packetConnWrapper) WritePacket(buffer *B.Buffer, destination M.Socksaddr) error {
-	vBuf := buf.New()
-	vBuf.Write(buffer.Bytes())
-	endpoint := toDestination(destination, net.Network_UDP)
-	vBuf.UDP = &endpoint
-	return w.Writer.WriteMultiBuffer(buf.MultiBuffer{vBuf})
-}
-
-func (w *packetConnWrapper) Close() error {
-	buf.ReleaseMulti(w.cached)
-	return nil
-}
-
-func returnError(err error) error {
-	if E.IsClosed(err) {
-		return nil
-	}
-	return err
-}
--- a/transport/internet/config.pb.go
+++ b/transport/internet/config.pb.go
@@ -428,6 +428,7 @@ type SocketConfig struct {
 	Interface                  string         `protobuf:"bytes,13,opt,name=interface,proto3" json:"interface,omitempty"`
 	V6Only                     bool           `protobuf:"varint,14,opt,name=v6only,proto3" json:"v6only,omitempty"`
 	TcpWindowClamp             int32          `protobuf:"varint,15,opt,name=tcp_window_clamp,json=tcpWindowClamp,proto3" json:"tcp_window_clamp,omitempty"`
+	TcpUserTimeout             int32          `protobuf:"varint,16,opt,name=tcp_user_timeout,json=tcpUserTimeout,proto3" json:"tcp_user_timeout,omitempty"`
 }

 func (x *SocketConfig) Reset() {
@@ -567,6 +568,13 @@ func (x *SocketConfig) GetTcpWindowClamp() int32 {
 	return 0
 }

+func (x *SocketConfig) GetTcpUserTimeout() int32 {
+	if x != nil {
+		return x.TcpUserTimeout
+	}
+	return 0
+}
+
 var File_transport_internet_config_proto protoreflect.FileDescriptor

 var file_transport_internet_config_proto_rawDesc = []byte{
@@ -619,7 +627,7 @@ var file_transport_internet_config_proto_rawDesc = []byte{
 	0x12, 0x30, 0x0a, 0x13, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x4c, 0x61, 0x79,
 	0x65, 0x72, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x08, 0x52, 0x13, 0x74,
 	0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x4c, 0x61, 0x79, 0x65, 0x72, 0x50, 0x72, 0x6f,
-	0x78, 0x79, 0x22, 0xc8, 0x05, 0x0a, 0x0c, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x43, 0x6f, 0x6e,
+	0x78, 0x79, 0x22, 0xf2, 0x05, 0x0a, 0x0c, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x43, 0x6f, 0x6e,
 	0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x6d, 0x61, 0x72, 0x6b, 0x18, 0x01, 0x20, 0x01, 0x28,
 	0x05, 0x52, 0x04, 0x6d, 0x61, 0x72, 0x6b, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x66, 0x6f, 0x18, 0x02,
 	0x20, 0x01, 0x28, 0x05, 0x52, 0x03, 0x74, 0x66, 0x6f, 0x12, 0x48, 0x0a, 0x06, 0x74, 0x70, 0x72,
@@ -660,27 +668,30 @@ var file_transport_internet_config_proto_rawDesc = []byte{
 	0x6f, 0x6e, 0x6c, 0x79, 0x18, 0x0e, 0x20, 0x01, 0x28, 0x08, 0x52, 0x06, 0x76, 0x36, 0x6f, 0x6e,
 	0x6c, 0x79, 0x12, 0x28, 0x0a, 0x10, 0x74, 0x63, 0x70, 0x5f, 0x77, 0x69, 0x6e, 0x64, 0x6f, 0x77,
 	0x5f, 0x63, 0x6c, 0x61, 0x6d, 0x70, 0x18, 0x0f, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0e, 0x74, 0x63,
-	0x70, 0x57, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x43, 0x6c, 0x61, 0x6d, 0x70, 0x22, 0x2f, 0x0a, 0x0a,
-	0x54, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x4d, 0x6f, 0x64, 0x65, 0x12, 0x07, 0x0a, 0x03, 0x4f, 0x66,
-	0x66, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x54, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x10, 0x01, 0x12,
-	0x0c, 0x0a, 0x08, 0x52, 0x65, 0x64, 0x69, 0x72, 0x65, 0x63, 0x74, 0x10, 0x02, 0x2a, 0x5a, 0x0a,
-	0x11, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63,
-	0x6f, 0x6c, 0x12, 0x07, 0x0a, 0x03, 0x54, 0x43, 0x50, 0x10, 0x00, 0x12, 0x07, 0x0a, 0x03, 0x55,
-	0x44, 0x50, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x4d, 0x4b, 0x43, 0x50, 0x10, 0x02, 0x12, 0x0d,
-	0x0a, 0x09, 0x57, 0x65, 0x62, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x10, 0x03, 0x12, 0x08, 0x0a,
-	0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x04, 0x12, 0x10, 0x0a, 0x0c, 0x44, 0x6f, 0x6d, 0x61, 0x69,
-	0x6e, 0x53, 0x6f, 0x63, 0x6b, 0x65, 0x74, 0x10, 0x05, 0x2a, 0x41, 0x0a, 0x0e, 0x44, 0x6f, 0x6d,
-	0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x09, 0x0a, 0x05, 0x41,
-	0x53, 0x5f, 0x49, 0x53, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50,
-	0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x02, 0x12,
-	0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x03, 0x42, 0x67, 0x0a, 0x1b,
-	0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f,
-	0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x50, 0x01, 0x5a, 0x2c, 0x67,
-	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78,
-	0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f,
-	0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0xaa, 0x02, 0x17, 0x58, 0x72,
-	0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49, 0x6e, 0x74,
-	0x65, 0x72, 0x6e, 0x65, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x70, 0x57, 0x69, 0x6e, 0x64, 0x6f, 0x77, 0x43, 0x6c, 0x61, 0x6d, 0x70, 0x12, 0x28, 0x0a, 0x10,
+	0x74, 0x63, 0x70, 0x5f, 0x75, 0x73, 0x65, 0x72, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74,
+	0x18, 0x10, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0e, 0x74, 0x63, 0x70, 0x55, 0x73, 0x65, 0x72, 0x54,
+	0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74, 0x22, 0x2f, 0x0a, 0x0a, 0x54, 0x50, 0x72, 0x6f, 0x78, 0x79,
+	0x4d, 0x6f, 0x64, 0x65, 0x12, 0x07, 0x0a, 0x03, 0x4f, 0x66, 0x66, 0x10, 0x00, 0x12, 0x0a, 0x0a,
+	0x06, 0x54, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x10, 0x01, 0x12, 0x0c, 0x0a, 0x08, 0x52, 0x65, 0x64,
+	0x69, 0x72, 0x65, 0x63, 0x74, 0x10, 0x02, 0x2a, 0x5a, 0x0a, 0x11, 0x54, 0x72, 0x61, 0x6e, 0x73,
+	0x70, 0x6f, 0x72, 0x74, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x07, 0x0a, 0x03,
+	0x54, 0x43, 0x50, 0x10, 0x00, 0x12, 0x07, 0x0a, 0x03, 0x55, 0x44, 0x50, 0x10, 0x01, 0x12, 0x08,
+	0x0a, 0x04, 0x4d, 0x4b, 0x43, 0x50, 0x10, 0x02, 0x12, 0x0d, 0x0a, 0x09, 0x57, 0x65, 0x62, 0x53,
+	0x6f, 0x63, 0x6b, 0x65, 0x74, 0x10, 0x03, 0x12, 0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10,
+	0x04, 0x12, 0x10, 0x0a, 0x0c, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x6f, 0x63, 0x6b, 0x65,
+	0x74, 0x10, 0x05, 0x2a, 0x41, 0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
+	0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x09, 0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00,
+	0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07,
+	0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45,
+	0x5f, 0x49, 0x50, 0x36, 0x10, 0x03, 0x42, 0x67, 0x0a, 0x1b, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
+	0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74,
+	0x65, 0x72, 0x6e, 0x65, 0x74, 0x50, 0x01, 0x5a, 0x2c, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e,
+	0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f,
+	0x72, 0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74,
+	0x65, 0x72, 0x6e, 0x65, 0x74, 0xaa, 0x02, 0x17, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61,
+	0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/transport/internet/config.proto
+++ b/transport/internet/config.proto
@@ -104,4 +104,6 @@ message SocketConfig {
  bool   v6only = 14;

  int32 tcp_window_clamp = 15;
+
+  int32 tcp_user_timeout = 16;
 }
--- a/transport/internet/sockopt_linux.go
+++ b/transport/internet/sockopt_linux.go
@@ -7,13 +7,6 @@ import (
 	"golang.org/x/sys/unix"
 )

-const (
-	// For incoming connections.
-	TCP_FASTOPEN = 23
-	// For out-going connections.
-	TCP_FASTOPEN_CONNECT = 30
-)
-
 func bindAddr(fd uintptr, ip []byte, port uint32) error {
 	setReuseAddr(fd)
 	setReusePort(fd)
@@ -59,8 +52,8 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
 			tfo = 1
 		}
 		if tfo >= 0 {
-			if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN_CONNECT, tfo); err != nil {
-				return newError("failed to set TCP_FASTOPEN_CONNECT=", tfo).Base(err)
+			if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, unix.TCP_FASTOPEN_CONNECT, tfo); err != nil {
+				return newError("failed to set TCP_FASTOPEN_CONNECT", tfo).Base(err)
 			}
 		}

@@ -95,6 +88,12 @@ func applyOutboundSocketOptions(network string, address string, fd uintptr, conf
 				return newError("failed to set TCP_WINDOW_CLAMP", err)
 			}
 		}
+
+		if config.TcpUserTimeout > 0 {
+			if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, int(config.TcpUserTimeout)); err != nil {
+				return newError("failed to set TCP_USER_TIMEOUT", err)
+			}
+		}
 	}

 	if config.Tproxy.IsEnabled() {
@@ -115,8 +114,8 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
 	if isTCPSocket(network) {
 		tfo := config.ParseTFOValue()
 		if tfo >= 0 {
-			if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, TCP_FASTOPEN, tfo); err != nil {
-				return newError("failed to set TCP_FASTOPEN=", tfo).Base(err)
+			if err := syscall.SetsockoptInt(int(fd), syscall.SOL_TCP, unix.TCP_FASTOPEN, tfo); err != nil {
+				return newError("failed to set TCP_FASTOPEN", tfo).Base(err)
 			}
 		}

@@ -151,6 +150,12 @@ func applyInboundSocketOptions(network string, fd uintptr, config *SocketConfig)
 				return newError("failed to set TCP_WINDOW_CLAMP", err)
 			}
 		}
+
+		if config.TcpUserTimeout > 0 {
+			if err := syscall.SetsockoptInt(int(fd), syscall.IPPROTO_TCP, unix.TCP_USER_TIMEOUT, int(config.TcpUserTimeout)); err != nil {
+				return newError("failed to set TCP_USER_TIMEOUT", err)
+			}
+		}
 	}

 	if config.Tproxy.IsEnabled() {
--- a/transport/internet/system_dialer.go
+++ b/transport/internet/system_dialer.go
@@ -5,6 +5,7 @@ import (
 	"syscall"
 	"time"

+	"github.com/sagernet/sing/common/control"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/features/dns"
@@ -18,7 +19,7 @@ type SystemDialer interface {
 }

 type DefaultSystemDialer struct {
-	controllers []controller
+	controllers []control.Func
 	dns         dns.Client
 	obm         outbound.Manager
 }
@@ -81,6 +82,11 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne

 	if sockopt != nil || len(d.controllers) > 0 {
 		dialer.Control = func(network, address string, c syscall.RawConn) error {
+			for _, ctl := range d.controllers {
+				if err := ctl(network, address, c); err != nil {
+					newError("failed to apply external controller").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				}
+			}
 			return c.Control(func(fd uintptr) {
 				if sockopt != nil {
 					if err := applyOutboundSocketOptions(network, address, fd, sockopt); err != nil {
@@ -92,12 +98,6 @@ func (d *DefaultSystemDialer) Dial(ctx context.Context, src net.Address, dest ne
 						}
 					}
 				}
-
-				for _, ctl := range d.controllers {
-					if err := ctl(network, address, fd); err != nil {
-						newError("failed to apply external controller").Base(err).WriteToLog(session.ExportIDToError(ctx))
-					}
-				}
 			})
 		}
 	}
@@ -185,7 +185,7 @@ func UseAlternativeSystemDialer(dialer SystemDialer) {
 // It only works when effective dialer is the default dialer.
 //
 // xray:api:beta
-func RegisterDialerController(ctl func(network, address string, fd uintptr) error) error {
+func RegisterDialerController(ctl control.Func) error {
 	if ctl == nil {
 		return newError("nil listener controller")
 	}
--- a/transport/internet/system_listener.go
+++ b/transport/internet/system_listener.go
@@ -10,21 +10,26 @@ import (
 	"time"

 	"github.com/pires/go-proxyproto"
+	"github.com/sagernet/sing/common/control"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 )

 var effectiveListener = DefaultListener{}

-type controller func(network, address string, fd uintptr) error
-
 type DefaultListener struct {
-	controllers []controller
+	controllers []control.Func
 }

-func getControlFunc(ctx context.Context, sockopt *SocketConfig, controllers []controller) func(network, address string, c syscall.RawConn) error {
+func getControlFunc(ctx context.Context, sockopt *SocketConfig, controllers []control.Func) func(network, address string, c syscall.RawConn) error {
 	return func(network, address string, c syscall.RawConn) error {
 		return c.Control(func(fd uintptr) {
+			for _, controller := range controllers {
+				if err := controller(network, address, c); err != nil {
+					newError("failed to apply external controller").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				}
+			}
+
 			if sockopt != nil {
 				if err := applyInboundSocketOptions(network, fd, sockopt); err != nil {
 					newError("failed to apply socket options to incoming connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
@@ -32,12 +37,6 @@ func getControlFunc(ctx context.Context, sockopt *SocketConfig, controllers []co
 			}

 			setReusePort(fd)
-
-			for _, controller := range controllers {
-				if err := controller(network, address, fd); err != nil {
-					newError("failed to apply external controller").Base(err).WriteToLog(session.ExportIDToError(ctx))
-				}
-			}
 		})
 	}
 }
@@ -117,7 +116,7 @@ func (dl *DefaultListener) ListenPacket(ctx context.Context, addr net.Addr, sock
 // The controller can be used to operate on file descriptors before they are put into use.
 //
 // xray:api:beta
-func RegisterListenerController(controller func(network, address string, fd uintptr) error) error {
+func RegisterListenerController(controller control.Func) error {
 	if controller == nil {
 		return newError("nil listener controller")
 	}
--- a/transport/internet/system_listener_test.go
+++ b/transport/internet/system_listener_test.go
@@ -3,8 +3,10 @@ package internet_test
 import (
 	"context"
 	"net"
+	"syscall"
 	"testing"

+	"github.com/sagernet/sing/common/control"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/transport/internet"
 )
@@ -12,9 +14,11 @@ import (
 func TestRegisterListenerController(t *testing.T) {
 	var gotFd uintptr

-	common.Must(internet.RegisterListenerController(func(network string, addr string, fd uintptr) error {
-		gotFd = fd
-		return nil
+	common.Must(internet.RegisterListenerController(func(network, address string, conn syscall.RawConn) error {
+		return control.Raw(conn, func(fd uintptr) error {
+			gotFd = fd
+			return nil
+		})
 	}))

 	conn, err := internet.ListenSystemPacket(context.Background(), &net.UDPAddr{
Author	SHA1	Message	Date
世界	603264017a	Add tun support	2023-04-23 19:51:48 +08:00
世界	18e5b0963f	Update dependencies	2023-04-23 19:32:07 +08:00
yichya QC	90d915ea05	feat: add tcp_user_timeout ```json {"streamSettings":{"sockopt": {"tcpUserTimeout": 10000}}} ``` run `gofmt -w -s .` as well	2023-04-22 20:41:43 -04:00
dependabot[bot]	d9994538bc	Bump github.com/quic-go/quic-go from 0.33.0 to 0.34.0 Bumps [github.com/quic-go/quic-go](https://github.com/quic-go/quic-go) from 0.33.0 to 0.34.0. - [Release notes](https://github.com/quic-go/quic-go/releases) - [Changelog](https://github.com/quic-go/quic-go/blob/master/Changelog.md) - [Commits](https://github.com/quic-go/quic-go/compare/v0.33.0...v0.34.0) --- updated-dependencies: - dependency-name: github.com/quic-go/quic-go dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2023-04-20 23:43:06 -04:00
冰天雪地	69aa3f48cc	Fix : docker build when repo on organization. (#1973 ) * feat : support docker build * fix : ghcr build login when organization --------- Co-authored-by: kunson <kunson@kunsondeMacBook-Pro-3.local>	2023-04-20 11:36:25 -04:00
kunson	ca32496a38	feat : support docker build	2023-04-20 11:07:35 -04:00