Merge branch 'main' of https://github.com/XTLS/Xray-core into main

.github/build/friendly-filenames.json

@@ -2,7 +2,6 @@
   "android-arm64": { "friendlyName": "android-arm64-v8a" },
   "darwin-amd64": { "friendlyName": "macos-64" },
   "darwin-arm64": { "friendlyName": "macos-arm64-v8a" },
-  "dragonfly-amd64": { "friendlyName": "dragonfly-64" },
   "freebsd-386": { "friendlyName": "freebsd-32" },
   "freebsd-amd64": { "friendlyName": "freebsd-64" },
   "freebsd-arm64": { "friendlyName": "freebsd-arm64-v8a" },

.github/workflows/release.yml

@@ -70,12 +70,10 @@ jobs:
     strategy:
       matrix:
         # Include amd64 on all platforms.
-        goos: [windows, freebsd, openbsd, linux, dragonfly, darwin]
+        goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
         exclude:
-          # Exclude i386 on darwin and dragonfly.
+          # Exclude i386 on darwin
-          - goarch: 386
-            goos: dragonfly
           - goarch: 386
             goos: darwin
         include:

README.md

@@ -91,6 +91,8 @@
 
 - iOS & macOS arm64
   - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
+- Xray Tools
+  - [xray-knife](https://github.com/lilendian0x00/xray-knife)
 - Xray Wrapper
   - [XTLS/libXray](https://github.com/XTLS/libXray)
   - [xtlsapi](https://github.com/hiddify/xtlsapi)

app/commander/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/commander/config.proto
 

app/dispatcher/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/dispatcher/config.proto
 

app/dns/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/dns/config.proto
 

app/dns/fakedns/fakedns.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/dns/fakedns/fakedns.proto
 

app/log/command/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/log/command/config.proto
 

app/log/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/log/config.proto
 

app/metrics/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/metrics/config.proto
 

app/observatory/command/command.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/observatory/command/command.proto
 

app/observatory/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/observatory/config.proto
 

app/policy/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/policy/config.proto
 

app/proxyman/command/command.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/proxyman/command/command.proto
 

app/proxyman/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/proxyman/config.proto
 

app/reverse/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/reverse/config.proto
 

app/router/command/command.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/router/command/command.proto
 

app/router/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/router/config.proto
 

app/stats/command/command.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/stats/command/command.proto
 

app/stats/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: app/stats/config.proto
 

common/buf/readv_reader.go

@@ -147,7 +147,7 @@ var useReadv bool
 
 func init() {
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
-	value := platform.NewEnvFlag("xray.buf.readv").GetValue(func() string { return defaultFlagValue })
+	value := platform.NewEnvFlag(platform.UseReadV).GetValue(func() string { return defaultFlagValue })
 	switch value {
 	case defaultFlagValue, "auto", "enable":
 		useReadv = true

common/log/log.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/log/log.proto
 

common/net/address.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/net/address.proto
 

common/net/destination.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/net/destination.proto
 

common/net/network.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/net/network.proto
 

common/net/port.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/net/port.proto
 

common/platform/others.go

@@ -17,15 +17,13 @@ func LineSeparator() string {
 }
 
 func GetToolLocation(file string) string {
-	const name = "xray.location.tool"
+	toolPath := NewEnvFlag(ToolLocation).GetValue(getExecutableDir)
-	toolPath := EnvFlag{Name: name, AltName: NormalizeEnvName(name)}.GetValue(getExecutableDir)
 	return filepath.Join(toolPath, file)
 }
 
 // GetAssetLocation searches for `file` in certain locations
 func GetAssetLocation(file string) string {
-	const name = "xray.location.asset"
+	assetPath := NewEnvFlag(AssetLocation).GetValue(getExecutableDir)
-	assetPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	defPath := filepath.Join(assetPath, file)
 	for _, p := range []string{
 		defPath,

common/platform/platform.go

@@ -7,6 +7,24 @@ import (
 	"strings"
 )
 
+const (
+	PluginLocation  = "xray.location.plugin"
+	ConfigLocation  = "xray.location.config"
+	ConfdirLocation = "xray.location.confdir"
+	ToolLocation    = "xray.location.tool"
+	AssetLocation   = "xray.location.asset"
+
+	UseReadV         = "xray.buf.readv"
+	UseFreedomSplice = "xray.buf.splice"
+	UseVmessPadding  = "xray.vmess.padding"
+	UseCone          = "xray.cone.disabled"
+
+	BufferSize           = "xray.ray.buffer.size"
+	BrowserDialerAddress = "xray.browser.dialer"
+	XUDPLog              = "xray.xudp.show"
+	XUDPBaseKey          = "xray.xudp.basekey"
+)
+
 type EnvFlag struct {
 	Name    string
 	AltName string
@@ -67,20 +85,17 @@ func getExecutableSubDir(dir string) func() string {
 }
 
 func GetPluginDirectory() string {
-	const name = "xray.location.plugin"
+	pluginDir := NewEnvFlag(PluginLocation).GetValue(getExecutableSubDir("plugins"))
-	pluginDir := NewEnvFlag(name).GetValue(getExecutableSubDir("plugins"))
 	return pluginDir
 }
 
 func GetConfigurationPath() string {
-	const name = "xray.location.config"
+	configPath := NewEnvFlag(ConfigLocation).GetValue(getExecutableDir)
-	configPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	return filepath.Join(configPath, "config.json")
 }
 
 // GetConfDirPath reads "xray.location.confdir"
 func GetConfDirPath() string {
-	const name = "xray.location.confdir"
+	configPath := NewEnvFlag(ConfdirLocation).GetValue(func() string { return "" })
-	configPath := NewEnvFlag(name).GetValue(func() string { return "" })
 	return configPath
 }

common/platform/windows.go

@@ -15,14 +15,12 @@ func LineSeparator() string {
 }
 
 func GetToolLocation(file string) string {
-	const name = "xray.location.tool"
+	toolPath := NewEnvFlag(ToolLocation).GetValue(getExecutableDir)
-	toolPath := EnvFlag{Name: name, AltName: NormalizeEnvName(name)}.GetValue(getExecutableDir)
 	return filepath.Join(toolPath, file+".exe")
 }
 
 // GetAssetLocation searches for `file` in the excutable dir
 func GetAssetLocation(file string) string {
-	const name = "xray.location.asset"
+	assetPath := NewEnvFlag(AssetLocation).GetValue(getExecutableDir)
-	assetPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	return filepath.Join(assetPath, file)
 }

common/protocol/headers.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/protocol/headers.proto
 

common/protocol/server_spec.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/protocol/server_spec.proto
 

common/protocol/user.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/protocol/user.proto
 

common/serial/typed_message.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: common/serial/typed_message.proto
 

common/xudp/errors.generated.go

@@ -0,0 +1,9 @@
+package xudp
+
+import "github.com/xtls/xray-core/common/errors"
+
+type errPathObjHolder struct{}
+
+func newError(values ...interface{}) *errors.Error {
+	return errors.New(values...).WithPathObj(errPathObjHolder{})
+}

common/xudp/xudp.go

@@ -6,11 +6,11 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io"
-	"os"
 	"strings"
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
 	"lukechampine.com/blake3"
@@ -28,20 +28,15 @@ var (
 	BaseKey []byte
 )
 
-const (
-	EnvShow    = "XRAY_XUDP_SHOW"
-	EnvBaseKey = "XRAY_XUDP_BASEKEY"
-)
-
 func init() {
-	if strings.ToLower(os.Getenv(EnvShow)) == "true" {
+	if strings.ToLower(platform.NewEnvFlag(platform.XUDPLog).GetValue(func() string { return "" })) == "true" {
 		Show = true
 	}
-	if raw, found := os.LookupEnv(EnvBaseKey); found {
+	if raw := platform.NewEnvFlag(platform.XUDPBaseKey).GetValue(func() string { return "" }); raw != "" {
 		if BaseKey, _ = base64.RawURLEncoding.DecodeString(raw); len(BaseKey) == 32 {
 			return
 		}
-		panic(EnvBaseKey + ": invalid value: " + raw)
+		panic(platform.XUDPBaseKey + ": invalid value: " + raw)
 	}
 	rand.Read(BaseKey)
 }
@@ -56,7 +51,7 @@ func GetGlobalID(ctx context.Context) (globalID [8]byte) {
 		h.Write([]byte(inbound.Source.String()))
 		copy(globalID[:], h.Sum(nil))
 		if Show {
-			fmt.Printf("XUDP inbound.Source.String(): %v\tglobalID: %v\n", inbound.Source.String(), globalID)
+			newError(fmt.Sprintf("XUDP inbound.Source.String(): %v\tglobalID: %v\n", inbound.Source.String(), globalID)).WriteToLog(session.ExportIDToError(ctx))
 		}
 	}
 	return

core/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: core/config.proto
 

core/core.go

@@ -21,7 +21,7 @@ import (
 var (
 	Version_x byte = 1
 	Version_y byte = 8
-	Version_z byte = 4
+	Version_z byte = 6
 )
 
 var (

core/xray.go

@@ -2,11 +2,11 @@ package core
 
 import (
 	"context"
-	"os"
 	"reflect"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/features"
 	"github.com/xtls/xray-core/features/dns"
@@ -181,7 +181,8 @@ func NewWithContext(ctx context.Context, config *Config) (*Instance, error) {
 }
 
 func initInstanceWithConfig(config *Config, server *Instance) (bool, error) {
-	server.ctx = context.WithValue(server.ctx, "cone", os.Getenv("XRAY_CONE_DISABLED") != "true")
+	server.ctx = context.WithValue(server.ctx, "cone", 
+		platform.NewEnvFlag(platform.UseCone).GetValue(func() string { return "" }) != "true")
 
 	if config.Transport != nil {
 		features.PrintDeprecatedFeatureWarning("global transport settings")

features/policy/policy.go

@@ -83,12 +83,8 @@ func ManagerType() interface{} {
 var defaultBufferSize int32
 
 func init() {
-	const key = "xray.ray.buffer.size"
 	const defaultValue = -17
-	size := platform.EnvFlag{
+	size := platform.NewEnvFlag(platform.BufferSize).GetValueAsInt(defaultValue)
-		Name:    key,
-		AltName: platform.NormalizeEnvName(key),
-	}.GetValueAsInt(defaultValue)
 
 	switch size {
 	case 0:

go.mod

@@ -1,39 +1,40 @@
 module github.com/xtls/xray-core
 
-go 1.21
+go 1.21.4
 
 require (
 	github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344
 	github.com/golang/mock v1.6.0
-	github.com/google/go-cmp v0.5.9
+	github.com/google/go-cmp v0.6.0
-	github.com/gorilla/websocket v1.5.0
+	github.com/gorilla/websocket v1.5.1
-	github.com/miekg/dns v1.1.56
+	github.com/miekg/dns v1.1.57
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.7.0
-	github.com/quic-go/quic-go v0.39.0
+	github.com/quic-go/quic-go v0.40.0
-	github.com/refraction-networking/utls v1.5.3
+	github.com/refraction-networking/utls v1.5.4
-	github.com/sagernet/sing v0.2.12
+	github.com/sagernet/sing v0.2.17
 	github.com/sagernet/sing-shadowsocks v0.2.5
-	github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c
 	github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb
 	github.com/stretchr/testify v1.8.4
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
-	github.com/xtls/reality v0.0.0-20230828171259-e426190d57f6
+	github.com/vishvananda/netlink v1.2.1-beta.2.0.20230316163032-ced5aaba43e3
+	github.com/xtls/reality v0.0.0-20231112171332-de1173cf2b19
 	go4.org/netipx v0.0.0-20230824141953-6213f710f925
-	golang.org/x/crypto v0.13.0
+	golang.org/x/crypto v0.15.0
-	golang.org/x/net v0.15.0
+	golang.org/x/net v0.18.0
-	golang.org/x/sync v0.3.0
+	golang.org/x/sync v0.5.0
-	golang.org/x/sys v0.12.0
+	golang.org/x/sys v0.14.0
-	google.golang.org/grpc v1.58.2
+	golang.zx2c4.com/wireguard v0.0.0-20231022001213-2e0774f246fb
+	google.golang.org/grpc v1.59.0
 	google.golang.org/protobuf v1.31.0
-	gvisor.dev/gvisor v0.0.0-20230822212503-5bf4e5f98744
+	gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b
 	h12.io/socks v1.0.3
 	lukechampine.com/blake3 v1.2.1
 )
 
 require (
-	github.com/andybalholm/brotli v1.0.5 // indirect
+	github.com/andybalholm/brotli v1.0.6 // indirect
-	github.com/cloudflare/circl v1.3.3 // indirect
+	github.com/cloudflare/circl v1.3.6 // indirect
 	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
@@ -41,21 +42,22 @@ require (
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/btree v1.1.2 // indirect
-	github.com/google/pprof v0.0.0-20230926050212-f7f687d19a98 // indirect
+	github.com/google/pprof v0.0.0-20231101202521-4ca4178f5c7a // indirect
-	github.com/klauspost/compress v1.17.0 // indirect
+	github.com/klauspost/compress v1.17.2 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
-	github.com/onsi/ginkgo/v2 v2.12.1 // indirect
+	github.com/onsi/ginkgo/v2 v2.13.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/quic-go/qtls-go1-20 v0.3.4 // indirect
+	github.com/quic-go/qtls-go1-20 v0.4.1 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
-	go.uber.org/atomic v1.11.0 // indirect
+	github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae // indirect
 	go.uber.org/mock v0.3.0 // indirect
-	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa // indirect
-	golang.org/x/mod v0.12.0 // indirect
+	golang.org/x/mod v0.14.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
-	golang.org/x/time v0.3.0 // indirect
+	golang.org/x/time v0.4.0 // indirect
-	golang.org/x/tools v0.13.0 // indirect
+	golang.org/x/tools v0.15.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230920204549-e6e6cdab5c13 // indirect
+	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -8,15 +8,15 @@ dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1
 dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
 git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
+github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
-github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cloudflare/circl v1.3.3 h1:fE/Qz0QdIGqeWfnwq0RE0R7MI51s0M2E4Ga9kq5AEMs=
+github.com/cloudflare/circl v1.3.6 h1:/xbKIqSHbZXHwkhbrhrt2YOHIwYJlXH94E3tI/gDlUg=
-github.com/cloudflare/circl v1.3.3/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA=
+github.com/cloudflare/circl v1.3.6/go.mod h1:5XYMA4rFBvNIrhs50XuiBJ15vF2pZn4nnUKZrLbUZFA=
 github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -36,8 +36,8 @@ github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344 h1:Arcl6UOIS/kgO2nW3
 github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344/go.mod h1:GIjDIg/heH5DOkXY3YJ/wNhfHsQHoXGjl8G8amsYQ1I=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
-github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
+github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY=
-github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
@@ -57,19 +57,19 @@ github.com/google/btree v1.1.2 h1:xf4v41cLI2Z6FxbKm+8Bu+m8ifhj15JuZ9sa0jZCMUU=
 github.com/google/btree v1.1.2/go.mod h1:qOPhT0dTNdNzV6Z/lhRX0YXUafgPLFUh+gZMl761Gm4=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
-github.com/google/pprof v0.0.0-20230926050212-f7f687d19a98 h1:pUa4ghanp6q4IJHwE9RwLgmVFfReJN+KbQ8ExNEUUoQ=
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 github.com/googleapis/gax-go v2.0.0+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY=
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 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
-github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.1 h1:gmztn0JnHVt9JZquRuzLw3g4wouNVzKL15iLr/zn/QY=
-github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.1/go.mod h1:x3kM2JMyaluk02fnUJpQuwD2dCS5NDG2ZHL0uE0tcaY=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
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@@ -78,10 +78,10 @@ github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/klauspost/compress v1.17.0 h1:Rnbp4K9EjcDuVuHtd0dgA4qNuv9yKDYKK1ulpJwgrqM=
+github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4=
-github.com/klauspost/compress v1.17.0/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
-github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg=
+github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
-github.com/klauspost/cpuid/v2 v2.2.5/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -92,16 +92,16 @@ github.com/lunixbochs/vtclean v1.0.0/go.mod h1:pHhQNgMf3btfWnGBVipUOjRYhoOsdGqdm
 github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/microcosm-cc/bluemonday v1.0.1/go.mod h1:hsXNsILzKxV+sX77C5b8FSuKF00vh2OMYv+xgHpAMF4=
-github.com/miekg/dns v1.1.56 h1:5imZaSeoRNvpM9SzWNhEcP9QliKiz20/dA2QabIGVnE=
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-github.com/miekg/dns v1.1.56/go.mod h1:cRm6Oo2C8TY9ZS/TqsSrseAcncm74lfK5G+ikN2SWWY=
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-github.com/onsi/gomega v1.27.10 h1:naR28SdDFlqrG6kScpT8VWpu1xWY5nJRCF3XaYyBjhI=
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-github.com/onsi/gomega v1.27.10/go.mod h1:RsS8tutOdbdgzbPtzzATp12yT7kM5I5aElG3evPbQ0M=
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@@ -116,21 +116,19 @@ github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
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 github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb h1:XfLJSPIOUX+osiMraVgIrMR27uMXnRJWGm1+GL8/63U=
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 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
@@ -168,12 +166,14 @@ github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e h1:5QefA066A1tF
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@@ -184,17 +184,17 @@ golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnf
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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-golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
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@@ -206,8 +206,8 @@ golang.org/x/net v0.0.0-20190313220215-9f648a60d977/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
-golang.org/x/net v0.15.0 h1:ugBLEUaxABaB5AJqW9enI0ACdci2RUd4eP51NTBvuJ8=
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-golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
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 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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@@ -219,30 +219,32 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -250,12 +252,16 @@ golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGm
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@@ -268,14 +274,14 @@ google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoA
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+google.golang.org/grpc v1.59.0 h1:Z5Iec2pjwb+LEOqzpB2MR12/eKFhDPhuqW91O+4bwUk=
-google.golang.org/grpc v1.58.2/go.mod h1:tgX3ZQDlNJGU96V6yHh1T/JeoBQ2TXdr43YbYSsCJk0=
+google.golang.org/grpc v1.59.0/go.mod h1:aUPDwccQo6OTjy7Hct4AfBPD1GptF4fyUjIkQ9YtF98=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
@@ -293,8 +299,8 @@ gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
-gvisor.dev/gvisor v0.0.0-20230822212503-5bf4e5f98744 h1:tE44CyJgxEGzoPtHs9GI7ddKdgEGCREQBP54AmaVM+I=
+gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b h1:yqkg3pTifuKukuWanp8spDsL4irJkHF5WI0J47hU87o=
-gvisor.dev/gvisor v0.0.0-20230822212503-5bf4e5f98744/go.mod h1:lYEMhXbxgudVhALYsMQrBaUAjM3NMinh8mKL1CJv7rc=
+gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b/go.mod h1:10sU+Uh5KKNv1+2x2A0Gvzt8FjD3ASIhorV3YsauXhk=
 h12.io/socks v1.0.3 h1:Ka3qaQewws4j4/eDQnOdpr4wXsC//dXtWvftlIcCQUo=
 h12.io/socks v1.0.3/go.mod h1:AIhxy1jOId/XCz9BO+EIgNL2rQiPTBNnOfnVnQ+3Eck=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

infra/conf/common.go

@@ -2,10 +2,10 @@ package conf
 
 import (
 	"encoding/json"
-	"os"
 	"strings"
 
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/protocol"
 )
 
@@ -46,7 +46,7 @@ func (v *Address) UnmarshalJSON(data []byte) error {
 		return newError("invalid address: ", string(data)).Base(err)
 	}
 	if strings.HasPrefix(rawStr, "env:") {
-		rawStr = os.Getenv(rawStr[4:])
+		rawStr = platform.NewEnvFlag(rawStr[4:]).GetValue(func() string { return "" })
 	}
 	v.Address = net.ParseAddress(rawStr)
 
@@ -118,7 +118,7 @@ func parseIntPort(data []byte) (net.Port, error) {
 
 func parseStringPort(s string) (net.Port, net.Port, error) {
 	if strings.HasPrefix(s, "env:") {
-		s = os.Getenv(s[4:])
+		s = platform.NewEnvFlag(s[4:]).GetValue(func() string { return "" })
 	}
 
 	pair := strings.SplitN(s, "-", 2)

infra/conf/freedom.go

@@ -28,14 +28,31 @@ type Fragment struct {
 // Build implements Buildable
 func (c *FreedomConfig) Build() (proto.Message, error) {
 	config := new(freedom.Config)
-	config.DomainStrategy = freedom.Config_AS_IS
 	switch strings.ToLower(c.DomainStrategy) {
-	case "useip", "use_ip", "use-ip":
+	case "asis", "":
+		config.DomainStrategy = freedom.Config_AS_IS
+	case "useip":
 		config.DomainStrategy = freedom.Config_USE_IP
-	case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
+	case "useipv4":
 		config.DomainStrategy = freedom.Config_USE_IP4
-	case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
+	case "useipv6":
 		config.DomainStrategy = freedom.Config_USE_IP6
+	case "useipv4v6":
+		config.DomainStrategy = freedom.Config_USE_IP46
+	case "useipv6v4":
+		config.DomainStrategy = freedom.Config_USE_IP64
+	case "forceip":
+		config.DomainStrategy = freedom.Config_FORCE_IP
+	case "forceipv4":
+		config.DomainStrategy = freedom.Config_FORCE_IP4
+	case "forceipv6":
+		config.DomainStrategy = freedom.Config_FORCE_IP6
+	case "forceipv4v6":
+		config.DomainStrategy = freedom.Config_FORCE_IP46
+	case "forceipv6v4":
+		config.DomainStrategy = freedom.Config_FORCE_IP64
+	default:
+		return nil, newError("unsupported domain strategy: ", c.DomainStrategy)
 	}
 
 	if c.Fragment != nil {

infra/conf/transport_internet.go

@@ -654,12 +654,30 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
 
 	dStrategy := internet.DomainStrategy_AS_IS
 	switch strings.ToLower(c.DomainStrategy) {
-	case "useip", "use_ip":
+	case "asis", "":
+		dStrategy = internet.DomainStrategy_AS_IS
+	case "useip":
 		dStrategy = internet.DomainStrategy_USE_IP
-	case "useip4", "useipv4", "use_ipv4", "use_ip_v4", "use_ip4":
+	case "useipv4":
 		dStrategy = internet.DomainStrategy_USE_IP4
-	case "useip6", "useipv6", "use_ipv6", "use_ip_v6", "use_ip6":
+	case "useipv6":
 		dStrategy = internet.DomainStrategy_USE_IP6
+	case "useipv4v6":
+		dStrategy = internet.DomainStrategy_USE_IP46
+	case "useipv6v4":
+		dStrategy = internet.DomainStrategy_USE_IP64
+	case "forceip":
+		dStrategy = internet.DomainStrategy_FORCE_IP
+	case "forceipv4":
+		dStrategy = internet.DomainStrategy_FORCE_IP4
+	case "forceipv6":
+		dStrategy = internet.DomainStrategy_FORCE_IP6
+	case "forceipv4v6":
+		dStrategy = internet.DomainStrategy_FORCE_IP46
+	case "forceipv6v4":
+		dStrategy = internet.DomainStrategy_FORCE_IP64
+	default:
+		return nil, newError("unsupported domain strategy: ", c.DomainStrategy)
 	}
 
 	return &internet.SocketConfig{

infra/conf/wireguard.go

@@ -3,6 +3,7 @@ package conf
 import (
 	"encoding/base64"
 	"encoding/hex"
+	"strings"
 
 	"github.com/xtls/xray-core/proxy/wireguard"
 	"google.golang.org/protobuf/proto"
@@ -12,7 +13,7 @@ type WireGuardPeerConfig struct {
 	PublicKey    string   `json:"publicKey"`
 	PreSharedKey string   `json:"preSharedKey"`
 	Endpoint     string   `json:"endpoint"`
-	KeepAlive    int      `json:"keepAlive"`
+	KeepAlive    uint32   `json:"keepAlive"`
 	AllowedIPs   []string `json:"allowedIPs,omitempty"`
 }
 
@@ -20,23 +21,23 @@ func (c *WireGuardPeerConfig) Build() (proto.Message, error) {
 	var err error
 	config := new(wireguard.PeerConfig)
 
+	if c.PublicKey != "" {
 		config.PublicKey, err = parseWireGuardKey(c.PublicKey)
 		if err != nil {
 			return nil, err
 		}
+	}
 
 	if c.PreSharedKey != "" {
 		config.PreSharedKey, err = parseWireGuardKey(c.PreSharedKey)
 		if err != nil {
 			return nil, err
 		}
-	} else {
-		config.PreSharedKey = "0000000000000000000000000000000000000000000000000000000000000000"
 	}
 
 	config.Endpoint = c.Endpoint
 	// default 0
-	config.KeepAlive = int32(c.KeepAlive)
+	config.KeepAlive = c.KeepAlive
 	if c.AllowedIPs == nil {
 		config.AllowedIps = []string{"0.0.0.0/0", "::0/0"}
 	} else {
@@ -47,12 +48,16 @@ func (c *WireGuardPeerConfig) Build() (proto.Message, error) {
 }
 
 type WireGuardConfig struct {
+	IsClient bool `json:""`
+
+	KernelMode     *bool                  `json:"kernelMode"`
 	SecretKey      string                 `json:"secretKey"`
 	Address        []string               `json:"address"`
 	Peers          []*WireGuardPeerConfig `json:"peers"`
-	MTU        int                    `json:"mtu"`
+	MTU            int32                  `json:"mtu"`
-	NumWorkers int                    `json:"workers"`
+	NumWorkers     int32                  `json:"workers"`
 	Reserved       []byte                 `json:"reserved"`
+	DomainStrategy string                 `json:"domainStrategy"`
 }
 
 func (c *WireGuardConfig) Build() (proto.Message, error) {
@@ -85,33 +90,68 @@ func (c *WireGuardConfig) Build() (proto.Message, error) {
 	if c.MTU == 0 {
 		config.Mtu = 1420
 	} else {
-		config.Mtu = int32(c.MTU)
+		config.Mtu = c.MTU
 	}
-	// these a fallback code exists in github.com/nanoda0523/wireguard-go code,
+	// these a fallback code exists in wireguard-go code,
 	// we don't need to process fallback manually
-	config.NumWorkers = int32(c.NumWorkers)
+	config.NumWorkers = c.NumWorkers
 
 	if len(c.Reserved) != 0 && len(c.Reserved) != 3 {
 		return nil, newError(`"reserved" should be empty or 3 bytes`)
 	}
 	config.Reserved = c.Reserved
 
+	switch strings.ToLower(c.DomainStrategy) {
+	case "forceip", "":
+		config.DomainStrategy = wireguard.DeviceConfig_FORCE_IP
+	case "forceipv4":
+		config.DomainStrategy = wireguard.DeviceConfig_FORCE_IP4
+	case "forceipv6":
+		config.DomainStrategy = wireguard.DeviceConfig_FORCE_IP6
+	case "forceipv4v6":
+		config.DomainStrategy = wireguard.DeviceConfig_FORCE_IP46
+	case "forceipv6v4":
+		config.DomainStrategy = wireguard.DeviceConfig_FORCE_IP64
+	default:
+		return nil, newError("unsupported domain strategy: ", c.DomainStrategy)
+	}
+
+	config.IsClient = c.IsClient
+	if c.KernelMode != nil {
+		config.KernelMode = *c.KernelMode
+		if config.KernelMode && !wireguard.KernelTunSupported() {
+			newError("kernel mode is not supported on your OS or permission is insufficient").AtWarning().WriteToLog()
+		}
+	} else {
+		config.KernelMode = wireguard.KernelTunSupported()
+		if config.KernelMode {
+			newError("kernel mode is enabled as it's supported and permission is sufficient").AtDebug().WriteToLog()
+		}
+	}
+
 	return config, nil
 }
 
 func parseWireGuardKey(str string) (string, error) {
-	if len(str) != 64 {
+	var err error
-		// may in base64 form
+
-		dat, err := base64.StdEncoding.DecodeString(str)
+	if len(str)%2 == 0 {
-		if err != nil {
+		_, err = hex.DecodeString(str)
-			return "", err
+		if err == nil {
-		}
-		if len(dat) != 32 {
-			return "", newError("key should be 32 bytes: " + str)
-		}
-		return hex.EncodeToString(dat), err
-	} else {
-		// already hex form
 			return str, nil
 		}
 	}
+
+	var dat []byte
+	str = strings.TrimSuffix(str, "=")
+	if strings.ContainsRune(str, '+') || strings.ContainsRune(str, '/') {
+		dat, err = base64.RawStdEncoding.DecodeString(str)
+	} else {
+		dat, err = base64.RawURLEncoding.DecodeString(str)
+	}
+	if err == nil {
+		return hex.EncodeToString(dat), nil
+	}
+
+	return "", newError("failed to deserialize key").Base(err)
+}

infra/conf/wireguard_test.go

@@ -7,7 +7,7 @@ import (
 	"github.com/xtls/xray-core/proxy/wireguard"
 )
 
-func TestWireGuardOutbound(t *testing.T) {
+func TestWireGuardConfig(t *testing.T) {
 	creator := func() Buildable {
 		return new(WireGuardConfig)
 	}
@@ -24,7 +24,9 @@ func TestWireGuardOutbound(t *testing.T) {
 					}
 				],
 				"mtu": 1300,
-				"workers": 2
+				"workers": 2,
+				"domainStrategy": "ForceIPv6v4",
+				"kernelMode": false
 			}`,
 			Parser: loadJSON(creator),
 			Output: &wireguard.DeviceConfig{
@@ -35,7 +37,6 @@ func TestWireGuardOutbound(t *testing.T) {
 					{
 						// also can read from hex form directly
 						PublicKey:  "6e65ce0be17517110c17d77288ad87e7fd5252dcc7d09b95a39d61db03df832a",
-						PreSharedKey: "0000000000000000000000000000000000000000000000000000000000000000",
 						Endpoint:   "127.0.0.1:1234",
 						KeepAlive:  0,
 						AllowedIps: []string{"0.0.0.0/0", "::0/0"},
@@ -43,6 +44,8 @@ func TestWireGuardOutbound(t *testing.T) {
 				},
 				Mtu:            1300,
 				NumWorkers:     2,
+				DomainStrategy: wireguard.DeviceConfig_FORCE_IP64,
+				KernelMode:     false,
 			},
 		},
 	})

infra/conf/xray.go

@@ -24,6 +24,7 @@ var (
 		"vless":         func() interface{} { return new(VLessInboundConfig) },
 		"vmess":         func() interface{} { return new(VMessInboundConfig) },
 		"trojan":        func() interface{} { return new(TrojanServerConfig) },
+		"wireguard":     func() interface{} { return &WireGuardConfig{IsClient: false} },
 	}, "protocol", "settings")
 
 	outboundConfigLoader = NewJSONConfigLoader(ConfigCreatorCache{
@@ -37,7 +38,7 @@ var (
 		"vmess":       func() interface{} { return new(VMessOutboundConfig) },
 		"trojan":      func() interface{} { return new(TrojanClientConfig) },
 		"dns":         func() interface{} { return new(DNSOutboundConfig) },
-		"wireguard":   func() interface{} { return new(WireGuardConfig) },
+		"wireguard":   func() interface{} { return &WireGuardConfig{IsClient: true} },
 	}, "protocol", "settings")
 
 	ctllog = log.New(os.Stderr, "xctl> ", 0)
@@ -487,38 +488,40 @@ func (c *Config) Override(o *Config, fn string) {
 	}
 	// deprecated attrs
 
-	// update the Inbound in slice if the only one in overide config has same tag
+	// update the Inbound in slice if the only one in override config has same tag
 	if len(o.InboundConfigs) > 0 {
-		if len(c.InboundConfigs) > 0 && len(o.InboundConfigs) == 1 {
+		for i := range o.InboundConfigs {
-			if idx := c.findInboundTag(o.InboundConfigs[0].Tag); idx > -1 {
+			if idx := c.findInboundTag(o.InboundConfigs[i].Tag); idx > -1 {
-				c.InboundConfigs[idx] = o.InboundConfigs[0]
+				c.InboundConfigs[idx] = o.InboundConfigs[i]
-				ctllog.Println("[", fn, "] updated inbound with tag: ", o.InboundConfigs[0].Tag)
+				newError("[", fn, "] updated inbound with tag: ", o.InboundConfigs[i].Tag).AtInfo().WriteToLog()
+
 			} else {
-				c.InboundConfigs = append(c.InboundConfigs, o.InboundConfigs[0])
+				c.InboundConfigs = append(c.InboundConfigs, o.InboundConfigs[i])
-				ctllog.Println("[", fn, "] appended inbound with tag: ", o.InboundConfigs[0].Tag)
+				newError("[", fn, "] appended inbound with tag: ", o.InboundConfigs[i].Tag).AtInfo().WriteToLog()
 			}
-		} else {
+
-			c.InboundConfigs = o.InboundConfigs
 		}
 	}
 
-	// update the Outbound in slice if the only one in overide config has same tag
+	// update the Outbound in slice if the only one in override config has same tag
 	if len(o.OutboundConfigs) > 0 {
-		if len(c.OutboundConfigs) > 0 && len(o.OutboundConfigs) == 1 {
+		outboundPrepends := []OutboundDetourConfig{}
-			if idx := c.findOutboundTag(o.OutboundConfigs[0].Tag); idx > -1 {
+		for i := range o.OutboundConfigs {
-				c.OutboundConfigs[idx] = o.OutboundConfigs[0]
+			if idx := c.findOutboundTag(o.OutboundConfigs[i].Tag); idx > -1 {
-				ctllog.Println("[", fn, "] updated outbound with tag: ", o.OutboundConfigs[0].Tag)
+				c.OutboundConfigs[idx] = o.OutboundConfigs[i]
+				newError("[", fn, "] updated outbound with tag: ", o.OutboundConfigs[i].Tag).AtInfo().WriteToLog()
 			} else {
 				if strings.Contains(strings.ToLower(fn), "tail") {
-					c.OutboundConfigs = append(c.OutboundConfigs, o.OutboundConfigs[0])
+					c.OutboundConfigs = append(c.OutboundConfigs, o.OutboundConfigs[i])
-					ctllog.Println("[", fn, "] appended outbound with tag: ", o.OutboundConfigs[0].Tag)
+					newError("[", fn, "] appended outbound with tag: ", o.OutboundConfigs[i].Tag).AtInfo().WriteToLog()
 				} else {
-					c.OutboundConfigs = append(o.OutboundConfigs, c.OutboundConfigs...)
+					outboundPrepends = append(outboundPrepends, o.OutboundConfigs[i])
-					ctllog.Println("[", fn, "] prepended outbound with tag: ", o.OutboundConfigs[0].Tag)
+					newError("[", fn, "] prepend outbound with tag: ", o.OutboundConfigs[i].Tag).AtInfo().WriteToLog()
 				}
 			}
-		} else {
+		}
-			c.OutboundConfigs = o.OutboundConfigs
+		if !strings.Contains(strings.ToLower(fn), "tail") && len(outboundPrepends) > 0 {
+			c.OutboundConfigs = append(outboundPrepends, c.OutboundConfigs...)
 		}
 	}
 }

infra/conf/xray_test.go

@@ -427,7 +427,7 @@ func TestConfig_Override(t *testing.T) {
 			&Config{InboundConfigs: []InboundDetourConfig{{Tag: "pos0"}, {Protocol: "vmess", Tag: "pos1"}}},
 			&Config{InboundConfigs: []InboundDetourConfig{{Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}}},
 			"",
-			&Config{InboundConfigs: []InboundDetourConfig{{Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}}},
+			&Config{InboundConfigs: []InboundDetourConfig{{Tag: "pos0"}, {Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}}},
 		},
 		{
 			"replace/notag-append",
@@ -445,10 +445,10 @@ func TestConfig_Override(t *testing.T) {
 		},
 		{
 			"replace/outbounds-prepend",
-			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos0"}, {Protocol: "vmess", Tag: "pos1"}}},
+			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos0"}, {Protocol: "vmess", Tag: "pos1"}, {Tag: "pos3"}}},
-			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}}},
+			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}, {Tag: "pos4", Protocol: "kcp"}}},
 			"config.json",
-			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos1", Protocol: "kcp"}, {Tag: "pos2", Protocol: "kcp"}}},
+			&Config{OutboundConfigs: []OutboundDetourConfig{{Tag: "pos2", Protocol: "kcp"}, {Tag: "pos4", Protocol: "kcp"}, {Tag: "pos0"}, {Tag: "pos1", Protocol: "kcp"}, {Tag: "pos3"}}},
 		},
 		{
 			"replace/outbounds-append",

main/commands/all/x25519.go

@@ -10,7 +10,7 @@ import (
 )
 
 var cmdX25519 = &base.Command{
-	UsageLine: `{{.Exec}} x25519 [-i "private key (base64.RawURLEncoding)"]`,
+	UsageLine: `{{.Exec}} x25519 [-i "private key (base64.RawURLEncoding)"] [--std-encoding]`,
 	Short:     `Generate key pair for x25519 key exchange`,
 	Long: `
 Generate key pair for x25519 key exchange.
@@ -18,6 +18,7 @@ Generate key pair for x25519 key exchange.
 Random: {{.Exec}} x25519
 
 From private key: {{.Exec}} x25519 -i "private key (base64.RawURLEncoding)"
+For Std Encoding: {{.Exec}} x25519 --std-encoding
 `,
 }
 
@@ -26,12 +27,14 @@ func init() {
 }
 
 var input_base64 = cmdX25519.Flag.String("i", "", "")
+var input_stdEncoding = cmdX25519.Flag.Bool("std-encoding", false, "")
 
 func executeX25519(cmd *base.Command, args []string) {
 	var output string
 	var err error
 	var privateKey []byte
 	var publicKey []byte
+	var encoding *base64.Encoding
 	if len(*input_base64) > 0 {
 		privateKey, err = base64.RawURLEncoding.DecodeString(*input_base64)
 		if err != nil {
@@ -63,9 +66,15 @@ func executeX25519(cmd *base.Command, args []string) {
 		goto out
 	}
 
+	if *input_stdEncoding {
+		encoding = base64.StdEncoding
+	} else {
+		encoding = base64.RawURLEncoding
+	}
+
 	output = fmt.Sprintf("Private key: %v\nPublic key: %v",
-		base64.RawURLEncoding.EncodeToString(privateKey),
+		encoding.EncodeToString(privateKey),
-		base64.RawURLEncoding.EncodeToString(publicKey))
+		encoding.EncodeToString(publicKey))
 out:
 	fmt.Println(output)
 }

proxy/blackhole/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/blackhole/config.proto
 

proxy/dns/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/dns/config.proto
 

proxy/dokodemo/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/dokodemo/config.proto
 

proxy/freedom/config.go

@@ -1,5 +1,44 @@
 package freedom
 
-func (c *Config) useIP() bool {
+var strategy = [][]byte{
-	return c.DomainStrategy == Config_USE_IP || c.DomainStrategy == Config_USE_IP4 || c.DomainStrategy == Config_USE_IP6
+	//              name        strategy,   prefer, fallback
+	{0, 0, 0}, //   AsIs        none,       /,      /
+	{1, 0, 0}, //   UseIP       use,        both,   none
+	{1, 4, 0}, //   UseIPv4     use,        4,      none
+	{1, 6, 0}, //   UseIPv6     use,        6,      none
+	{1, 4, 6}, //   UseIPv4v6   use,        4,      6
+	{1, 6, 4}, //   UseIPv6v4   use,        6,      4
+	{2, 0, 0}, //   ForceIP     force,      both,   none
+	{2, 4, 0}, //   ForceIPv4   force,      4,      none
+	{2, 6, 0}, //   ForceIPv6   force,      6,      none
+	{2, 4, 6}, //   ForceIPv4v6 force,      4,      6
+	{2, 6, 4}, //   ForceIPv6v4 force,      6,      4
+}
+
+func (c *Config) hasStrategy() bool {
+	return strategy[c.DomainStrategy][0] != 0
+}
+
+func (c *Config) forceIP() bool {
+	return strategy[c.DomainStrategy][0] == 2
+}
+
+func (c *Config) preferIP4() bool {
+	return strategy[c.DomainStrategy][1] == 4 || strategy[c.DomainStrategy][1] == 0
+}
+
+func (c *Config) preferIP6() bool {
+	return strategy[c.DomainStrategy][1] == 6 || strategy[c.DomainStrategy][1] == 0
+}
+
+func (c *Config) hasFallback() bool {
+	return strategy[c.DomainStrategy][2] != 0
+}
+
+func (c *Config) fallbackIP4() bool {
+	return strategy[c.DomainStrategy][2] == 4
+}
+
+func (c *Config) fallbackIP6() bool {
+	return strategy[c.DomainStrategy][2] == 6
 }

proxy/freedom/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/freedom/config.proto
 
@@ -28,6 +28,13 @@ const (
 	Config_USE_IP     Config_DomainStrategy = 1
 	Config_USE_IP4    Config_DomainStrategy = 2
 	Config_USE_IP6    Config_DomainStrategy = 3
+	Config_USE_IP46   Config_DomainStrategy = 4
+	Config_USE_IP64   Config_DomainStrategy = 5
+	Config_FORCE_IP   Config_DomainStrategy = 6
+	Config_FORCE_IP4  Config_DomainStrategy = 7
+	Config_FORCE_IP6  Config_DomainStrategy = 8
+	Config_FORCE_IP46 Config_DomainStrategy = 9
+	Config_FORCE_IP64 Config_DomainStrategy = 10
 )
 
 // Enum value maps for Config_DomainStrategy.
@@ -37,12 +44,26 @@ var (
 		1:  "USE_IP",
 		2:  "USE_IP4",
 		3:  "USE_IP6",
+		4:  "USE_IP46",
+		5:  "USE_IP64",
+		6:  "FORCE_IP",
+		7:  "FORCE_IP4",
+		8:  "FORCE_IP6",
+		9:  "FORCE_IP46",
+		10: "FORCE_IP64",
 	}
 	Config_DomainStrategy_value = map[string]int32{
 		"AS_IS":      0,
 		"USE_IP":     1,
 		"USE_IP4":    2,
 		"USE_IP6":    3,
+		"USE_IP46":   4,
+		"USE_IP64":   5,
+		"FORCE_IP":   6,
+		"FORCE_IP4":  7,
+		"FORCE_IP6":  8,
+		"FORCE_IP46": 9,
+		"FORCE_IP64": 10,
 	}
 )
 
@@ -314,7 +335,7 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
 	0x6c, 0x5f, 0x6d, 0x69, 0x6e, 0x18, 0x05, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0b, 0x69, 0x6e, 0x74,
 	0x65, 0x72, 0x76, 0x61, 0x6c, 0x4d, 0x69, 0x6e, 0x12, 0x21, 0x0a, 0x0c, 0x69, 0x6e, 0x74, 0x65,
 	0x72, 0x76, 0x61, 0x6c, 0x5f, 0x6d, 0x61, 0x78, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x0b,
-	0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x4d, 0x61, 0x78, 0x22, 0xf2, 0x02, 0x0a, 0x06,
+	0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x4d, 0x61, 0x78, 0x22, 0xdb, 0x03, 0x0a, 0x06,
 	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x52, 0x0a, 0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
 	0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32,
 	0x29, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x66, 0x72, 0x65,
@@ -333,18 +354,24 @@ var file_proxy_freedom_config_proto_rawDesc = []byte{
 	0x76, 0x65, 0x6c, 0x12, 0x38, 0x0a, 0x08, 0x66, 0x72, 0x61, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x18,
 	0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f,
 	0x78, 0x79, 0x2e, 0x66, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0x2e, 0x46, 0x72, 0x61, 0x67, 0x6d,
-	0x65, 0x6e, 0x74, 0x52, 0x08, 0x66, 0x72, 0x61, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x22, 0x41, 0x0a,
+	0x65, 0x6e, 0x74, 0x52, 0x08, 0x66, 0x72, 0x61, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x22, 0xa9, 0x01,
-	0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12,
+	0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
-	0x09, 0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53,
+	0x12, 0x09, 0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x55,
-	0x45, 0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50,
+	0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49,
-	0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x03,
+	0x50, 0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10,
-	0x42, 0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f,
+	0x03, 0x12, 0x0c, 0x0a, 0x08, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x36, 0x10, 0x04, 0x12,
-	0x78, 0x79, 0x2e, 0x66, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0x50, 0x01, 0x5a, 0x27, 0x67, 0x69,
+	0x0c, 0x0a, 0x08, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x34, 0x10, 0x05, 0x12, 0x0c, 0x0a,
-	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72,
+	0x08, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x06, 0x12, 0x0d, 0x0a, 0x09, 0x46,
-	0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x66, 0x72,
+	0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x07, 0x12, 0x0d, 0x0a, 0x09, 0x46, 0x4f,
-	0x65, 0x65, 0x64, 0x6f, 0x6d, 0xaa, 0x02, 0x12, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f,
+	0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x08, 0x12, 0x0e, 0x0a, 0x0a, 0x46, 0x4f, 0x52,
-	0x78, 0x79, 0x2e, 0x46, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x43, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x36, 0x10, 0x09, 0x12, 0x0e, 0x0a, 0x0a, 0x46, 0x4f, 0x52,
-	0x6f, 0x33,
+	0x43, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x34, 0x10, 0x0a, 0x42, 0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x66, 0x72, 0x65, 0x65,
+	0x64, 0x6f, 0x6d, 0x50, 0x01, 0x5a, 0x27, 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, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x66, 0x72, 0x65, 0x65, 0x64, 0x6f, 0x6d, 0xaa, 0x02,
+	0x12, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x46, 0x72, 0x65, 0x65,
+	0x64, 0x6f, 0x6d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

proxy/freedom/config.proto

@@ -27,6 +27,13 @@ message Config {
     USE_IP = 1;
     USE_IP4 = 2;
     USE_IP6 = 3;
+    USE_IP46 = 4;
+    USE_IP64 = 5;
+    FORCE_IP = 6;
+    FORCE_IP4 = 7;
+    FORCE_IP6 = 8;
+    FORCE_IP46 = 9;
+    FORCE_IP64 = 10;
   }
   DomainStrategy domain_strategy = 1;
   uint32 timeout = 2 [deprecated = true];

proxy/freedom/freedom.go

@@ -41,9 +41,9 @@ func init() {
 		return h, nil
 	}))
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
-	value := platform.NewEnvFlag("xray.buf.splice").GetValue(func() string { return defaultFlagValue })
+	value := platform.NewEnvFlag(platform.UseFreedomSplice).GetValue(func() string { return defaultFlagValue })
 	switch value {
-	case "auto", "enable":
+	case defaultFlagValue, "auto", "enable":
 		useSplice = true
 	}
 }
@@ -73,26 +73,18 @@ func (h *Handler) policy() policy.Session {
 }
 
 func (h *Handler) resolveIP(ctx context.Context, domain string, localAddr net.Address) net.Address {
-	var option dns.IPOption = dns.IPOption{
+	ips, err := h.dns.LookupIP(domain, dns.IPOption{
-		IPv4Enable: true,
+		IPv4Enable: (localAddr == nil || localAddr.Family().IsIPv4()) && h.config.preferIP4(),
-		IPv6Enable: true,
+		IPv6Enable: (localAddr == nil || localAddr.Family().IsIPv6()) && h.config.preferIP6(),
-		FakeEnable: false,
+	})
-	}
+	{ // Resolve fallback
-	if h.config.DomainStrategy == Config_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()) {
+		if (len(ips) == 0 || err != nil) && h.config.hasFallback() && localAddr == nil {
-		option = dns.IPOption{
+			ips, err = h.dns.LookupIP(domain, dns.IPOption{
-			IPv4Enable: true,
+				IPv4Enable: h.config.fallbackIP4(),
-			IPv6Enable: false,
+				IPv6Enable: h.config.fallbackIP6(),
-			FakeEnable: false,
+			})
-		}
-	} else if h.config.DomainStrategy == Config_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()) {
-		option = dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
 		}
 	}
-
-	ips, err := h.dns.LookupIP(domain, option)
 	if err != nil {
 		newError("failed to get IP address for domain ", domain).Base(err).WriteToLog(session.ExportIDToError(ctx))
 	}
@@ -142,7 +134,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 	var conn stat.Connection
 	err := retry.ExponentialBackoff(5, 100).On(func() error {
 		dialDest := destination
-		if h.config.useIP() && dialDest.Address.Family().IsDomain() {
+		if h.config.hasStrategy() && dialDest.Address.Family().IsDomain() {
 			ip := h.resolveIP(ctx, dialDest.Address.Domain(), dialer.Address())
 			if ip != nil {
 				dialDest = net.Destination{
@@ -151,6 +143,8 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 					Port:    dialDest.Port,
 				}
 				newError("dialing to ", dialDest).WriteToLog(session.ExportIDToError(ctx))
+			} else if h.config.forceIP() {
+				return dns.ErrEmptyResponse
 			}
 		}
 
@@ -325,7 +319,7 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 			if w.UDPOverride.Port != 0 {
 				b.UDP.Port = w.UDPOverride.Port
 			}
-			if w.Handler.config.useIP() && b.UDP.Address.Family().IsDomain() {
+			if w.Handler.config.hasStrategy() && b.UDP.Address.Family().IsDomain() {
 				ip := w.Handler.resolveIP(w.Context, b.UDP.Address.Domain(), nil)
 				if ip != nil {
 					b.UDP.Address = ip

proxy/http/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/http/config.proto
 

proxy/loopback/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/loopback/config.proto
 

proxy/proxy.go

@@ -257,7 +257,7 @@ func ReshapeMultiBuffer(ctx context.Context, buffer buf.MultiBuffer) buf.MultiBu
 	for i, buffer1 := range buffer {
 		if buffer1.Len() >= buf.Size-21 {
 			index := int32(bytes.LastIndex(buffer1.Bytes(), TlsApplicationDataStart))
-			if index <= 0 || index > buf.Size-21 {
+			if index < 21 || index > buf.Size-21 {
 				index = buf.Size / 2
 			}
 			buffer2 := buf.New()

proxy/shadowsocks/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/shadowsocks/config.proto
 

proxy/shadowsocks_2022/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/shadowsocks_2022/config.proto
 

proxy/socks/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/socks/config.proto
 

proxy/trojan/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/trojan/config.proto
 

proxy/vless/account.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vless/account.proto
 

proxy/vless/encoding/addons.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vless/encoding/addons.proto
 

proxy/vless/inbound/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vless/inbound/config.proto
 

proxy/vless/outbound/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vless/outbound/config.proto
 

proxy/vmess/account.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vmess/account.proto
 

proxy/vmess/inbound/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vmess/inbound/config.proto
 

proxy/vmess/outbound/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: proxy/vmess/outbound/config.proto
 

proxy/vmess/outbound/outbound.go

@@ -245,7 +245,7 @@ func init() {
 
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
 
-	paddingValue := platform.NewEnvFlag("xray.vmess.padding").GetValue(func() string { return defaultFlagValue })
+	paddingValue := platform.NewEnvFlag(platform.UseVmessPadding).GetValue(func() string { return defaultFlagValue })
 	if paddingValue != defaultFlagValue {
 		enablePadding = true
 	}

proxy/wireguard/bind.go

@@ -9,7 +9,8 @@ import (
 	"strconv"
 	"sync"
 
-	"github.com/sagernet/wireguard-go/conn"
+	"golang.zx2c4.com/wireguard/conn"
+
 	xnet "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/transport/internet"
@@ -26,48 +27,45 @@ type netReadInfo struct {
 	err      error
 }
 
-type netBindClient struct {
+// reduce duplicated code
-	workers   int
+type netBind struct {
-	dialer    internet.Dialer
 	dns       dns.Client
 	dnsOption dns.IPOption
-	reserved  []byte
 
+	workers   int
 	readQueue chan *netReadInfo
 }
 
-func (n *netBindClient) ParseEndpoint(s string) (conn.Endpoint, error) {
+// SetMark implements conn.Bind
-	ipStr, port, _, err := splitAddrPort(s)
+func (bind *netBind) SetMark(mark uint32) error {
+	return nil
+}
+
+// ParseEndpoint implements conn.Bind
+func (n *netBind) ParseEndpoint(s string) (conn.Endpoint, error) {
+	ipStr, port, err := net.SplitHostPort(s)
+	if err != nil {
+		return nil, err
+	}
+	portNum, err := strconv.Atoi(port)
 	if err != nil {
 		return nil, err
 	}
 
-	var addr net.IP
+	addr := xnet.ParseAddress(ipStr)
-	if IsDomainName(ipStr) {
+	if addr.Family() == xnet.AddressFamilyDomain {
-		ips, err := n.dns.LookupIP(ipStr, n.dnsOption)
+		ips, err := n.dns.LookupIP(addr.Domain(), n.dnsOption)
 		if err != nil {
 			return nil, err
 		} else if len(ips) == 0 {
 			return nil, dns.ErrEmptyResponse
 		}
-		addr = ips[0]
+		addr = xnet.IPAddress(ips[0])
-	} else {
-		addr = net.ParseIP(ipStr)
-	}
-	if addr == nil {
-		return nil, errors.New("failed to parse ip: " + ipStr)
-	}
-
-	var ip xnet.Address
-	if p4 := addr.To4(); len(p4) == net.IPv4len {
-		ip = xnet.IPAddress(p4[:])
-	} else {
-		ip = xnet.IPAddress(addr[:])
 	}
 
 	dst := xnet.Destination{
-		Address: ip,
+		Address: addr,
-		Port:    xnet.Port(port),
+		Port:    xnet.Port(portNum),
 		Network: xnet.Network_UDP,
 	}
 
@@ -76,25 +74,31 @@ func (n *netBindClient) ParseEndpoint(s string) (conn.Endpoint, error) {
 	}, nil
 }
 
-func (bind *netBindClient) Open(uport uint16) ([]conn.ReceiveFunc, uint16, error) {
+// BatchSize implements conn.Bind
+func (bind *netBind) BatchSize() int {
+	return 1
+}
+
+// Open implements conn.Bind
+func (bind *netBind) Open(uport uint16) ([]conn.ReceiveFunc, uint16, error) {
 	bind.readQueue = make(chan *netReadInfo)
 
-	fun := func(buff []byte) (cap int, ep conn.Endpoint, err error) {
+	fun := func(bufs [][]byte, sizes []int, eps []conn.Endpoint) (n int, err error) {
 		defer func() {
 			if r := recover(); r != nil {
-				cap = 0
+				n = 0
-				ep = nil
 				err = errors.New("channel closed")
 			}
 		}()
 
 		r := &netReadInfo{
-			buff: buff,
+			buff: bufs[0],
 		}
 		r.waiter.Add(1)
 		bind.readQueue <- r
 		r.waiter.Wait() // wait read goroutine done, or we will miss the result
-		return r.bytes, r.endpoint, r.err
+		sizes[0], eps[0] = r.bytes, r.endpoint
+		return 1, r.err
 	}
 	workers := bind.workers
 	if workers <= 0 {
@@ -108,13 +112,21 @@ func (bind *netBindClient) Open(uport uint16) ([]conn.ReceiveFunc, uint16, error
 	return arr, uint16(uport), nil
 }
 
-func (bind *netBindClient) Close() error {
+// Close implements conn.Bind
+func (bind *netBind) Close() error {
 	if bind.readQueue != nil {
 		close(bind.readQueue)
 	}
 	return nil
 }
 
+type netBindClient struct {
+	netBind
+
+	dialer   internet.Dialer
+	reserved []byte
+}
+
 func (bind *netBindClient) connectTo(endpoint *netEndpoint) error {
 	c, err := bind.dialer.Dial(context.Background(), endpoint.dst)
 	if err != nil {
@@ -150,7 +162,7 @@ func (bind *netBindClient) connectTo(endpoint *netEndpoint) error {
 	return nil
 }
 
-func (bind *netBindClient) Send(buff []byte, endpoint conn.Endpoint) error {
+func (bind *netBindClient) Send(buff [][]byte, endpoint conn.Endpoint) error {
 	var err error
 
 	nend, ok := endpoint.(*netEndpoint)
@@ -165,19 +177,42 @@ func (bind *netBindClient) Send(buff []byte, endpoint conn.Endpoint) error {
 		}
 	}
 
+	for _, buff := range buff {
 		if len(buff) > 3 && len(bind.reserved) == 3 {
 			copy(buff[1:], bind.reserved)
 		}
-
+		if _, err = nend.conn.Write(buff); err != nil {
-	_, err = nend.conn.Write(buff)
-
 			return err
 		}
-
+	}
-func (bind *netBindClient) SetMark(mark uint32) error {
 	return nil
 }
 
+type netBindServer struct {
+	netBind
+}
+
+func (bind *netBindServer) Send(buff [][]byte, endpoint conn.Endpoint) error {
+	var err error
+
+	nend, ok := endpoint.(*netEndpoint)
+	if !ok {
+		return conn.ErrWrongEndpointType
+	}
+
+	if nend.conn == nil {
+		return newError("connection not open yet")
+	}
+
+	for _, buff := range buff {
+		if _, err = nend.conn.Write(buff); err != nil {
+			return err
+		}
+	}
+
+	return err
+}
+
 type netEndpoint struct {
 	dst  xnet.Destination
 	conn net.Conn
@@ -186,7 +221,7 @@ type netEndpoint struct {
 func (netEndpoint) ClearSrc() {}
 
 func (e netEndpoint) DstIP() netip.Addr {
-	return toNetIpAddr(e.dst.Address)
+	return netip.Addr{}
 }
 
 func (e netEndpoint) SrcIP() netip.Addr {
@@ -225,42 +260,3 @@ func toNetIpAddr(addr xnet.Address) netip.Addr {
 		return netip.AddrFrom16(arr)
 	}
 }
-
-func stringsLastIndexByte(s string, b byte) int {
-	for i := len(s) - 1; i >= 0; i-- {
-		if s[i] == b {
-			return i
-		}
-	}
-	return -1
-}
-
-func splitAddrPort(s string) (ip string, port uint16, v6 bool, err error) {
-	i := stringsLastIndexByte(s, ':')
-	if i == -1 {
-		return "", 0, false, errors.New("not an ip:port")
-	}
-
-	ip = s[:i]
-	portStr := s[i+1:]
-	if len(ip) == 0 {
-		return "", 0, false, errors.New("no IP")
-	}
-	if len(portStr) == 0 {
-		return "", 0, false, errors.New("no port")
-	}
-	port64, err := strconv.ParseUint(portStr, 10, 16)
-	if err != nil {
-		return "", 0, false, errors.New("invalid port " + strconv.Quote(portStr) + " parsing " + strconv.Quote(s))
-	}
-	port = uint16(port64)
-	if ip[0] == '[' {
-		if len(ip) < 2 || ip[len(ip)-1] != ']' {
-			return "", 0, false, errors.New("missing ]")
-		}
-		ip = ip[1 : len(ip)-1]
-		v6 = true
-	}
-
-	return ip, port, v6, nil
-}

proxy/wireguard/client.go

@@ -0,0 +1,255 @@
+/*
+
+Some of codes are copied from https://github.com/octeep/wireproxy, license below.
+
+Copyright (c) 2022 Wind T.F. Wong <octeep@pm.me>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+package wireguard
+
+import (
+	"context"
+	"net/netip"
+	"sync"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/log"
+	"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/signal"
+	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/dns"
+	"github.com/xtls/xray-core/features/policy"
+	"github.com/xtls/xray-core/transport"
+	"github.com/xtls/xray-core/transport/internet"
+)
+
+// Handler is an outbound connection that silently swallow the entire payload.
+type Handler struct {
+	conf          *DeviceConfig
+	net           Tunnel
+	bind          *netBindClient
+	policyManager policy.Manager
+	dns           dns.Client
+	// cached configuration
+	ipc              string
+	endpoints        []netip.Addr
+	hasIPv4, hasIPv6 bool
+	wgLock           sync.Mutex
+}
+
+// New creates a new wireguard handler.
+func New(ctx context.Context, conf *DeviceConfig) (*Handler, error) {
+	v := core.MustFromContext(ctx)
+
+	endpoints, hasIPv4, hasIPv6, err := parseEndpoints(conf)
+	if err != nil {
+		return nil, err
+	}
+
+	d := v.GetFeature(dns.ClientType()).(dns.Client)
+	return &Handler{
+		conf:          conf,
+		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+		dns:           d,
+		ipc:           createIPCRequest(conf),
+		endpoints:     endpoints,
+		hasIPv4:       hasIPv4,
+		hasIPv6:       hasIPv6,
+	}, nil
+}
+
+func (h *Handler) processWireGuard(dialer internet.Dialer) (err error) {
+	h.wgLock.Lock()
+	defer h.wgLock.Unlock()
+
+	if h.bind != nil && h.bind.dialer == dialer && h.net != nil {
+		return nil
+	}
+
+	log.Record(&log.GeneralMessage{
+		Severity: log.Severity_Info,
+		Content:  "switching dialer",
+	})
+
+	if h.net != nil {
+		_ = h.net.Close()
+		h.net = nil
+	}
+	if h.bind != nil {
+		_ = h.bind.Close()
+		h.bind = nil
+	}
+
+	// bind := conn.NewStdNetBind() // TODO: conn.Bind wrapper for dialer
+	bind := &netBindClient{
+		netBind: netBind{
+			dns: h.dns,
+			dnsOption: dns.IPOption{
+				IPv4Enable: h.hasIPv4,
+				IPv6Enable: h.hasIPv6,
+			},
+			workers: int(h.conf.NumWorkers),
+		},
+		dialer:   dialer,
+		reserved: h.conf.Reserved,
+	}
+	defer func() {
+		if err != nil {
+			_ = bind.Close()
+		}
+	}()
+
+	h.net, err = h.makeVirtualTun(bind)
+	if err != nil {
+		return newError("failed to create virtual tun interface").Base(err)
+	}
+	h.bind = bind
+	return nil
+}
+
+// Process implements OutboundHandler.Dispatch().
+func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
+	outbound := session.OutboundFromContext(ctx)
+	if outbound == nil || !outbound.Target.IsValid() {
+		return newError("target not specified")
+	}
+	outbound.Name = "wireguard"
+	inbound := session.InboundFromContext(ctx)
+	if inbound != nil {
+		inbound.SetCanSpliceCopy(3)
+	}
+
+	if err := h.processWireGuard(dialer); err != nil {
+		return err
+	}
+
+	// Destination of the inner request.
+	destination := outbound.Target
+	command := protocol.RequestCommandTCP
+	if destination.Network == net.Network_UDP {
+		command = protocol.RequestCommandUDP
+	}
+
+	// resolve dns
+	addr := destination.Address
+	if addr.Family().IsDomain() {
+		ips, err := h.dns.LookupIP(addr.Domain(), dns.IPOption{
+			IPv4Enable: h.hasIPv4 && h.conf.preferIP4(),
+			IPv6Enable: h.hasIPv6 && h.conf.preferIP6(),
+		})
+		{ // Resolve fallback
+			if (len(ips) == 0 || err != nil) && h.conf.hasFallback() {
+				ips, err = h.dns.LookupIP(addr.Domain(), dns.IPOption{
+					IPv4Enable: h.hasIPv4 && h.conf.fallbackIP4(),
+					IPv6Enable: h.hasIPv6 && h.conf.fallbackIP6(),
+				})
+			}
+		}
+		if err != nil {
+			return newError("failed to lookup DNS").Base(err)
+		} else if len(ips) == 0 {
+			return dns.ErrEmptyResponse
+		}
+		addr = net.IPAddress(ips[dice.Roll(len(ips))])
+	}
+
+	var newCtx context.Context
+	var newCancel context.CancelFunc
+	if session.TimeoutOnlyFromContext(ctx) {
+		newCtx, newCancel = context.WithCancel(context.Background())
+	}
+
+	p := h.policyManager.ForLevel(0)
+
+	ctx, cancel := context.WithCancel(ctx)
+	timer := signal.CancelAfterInactivity(ctx, func() {
+		cancel()
+		if newCancel != nil {
+			newCancel()
+		}
+	}, p.Timeouts.ConnectionIdle)
+	addrPort := netip.AddrPortFrom(toNetIpAddr(addr), destination.Port.Value())
+
+	var requestFunc func() error
+	var responseFunc func() error
+
+	if command == protocol.RequestCommandTCP {
+		conn, err := h.net.DialContextTCPAddrPort(ctx, addrPort)
+		if err != nil {
+			return newError("failed to create TCP connection").Base(err)
+		}
+		defer conn.Close()
+
+		requestFunc = func() error {
+			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
+			return buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer))
+		}
+		responseFunc = func() error {
+			defer timer.SetTimeout(p.Timeouts.UplinkOnly)
+			return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
+		}
+	} else if command == protocol.RequestCommandUDP {
+		conn, err := h.net.DialUDPAddrPort(netip.AddrPort{}, addrPort)
+		if err != nil {
+			return newError("failed to create UDP connection").Base(err)
+		}
+		defer conn.Close()
+
+		requestFunc = func() error {
+			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
+			return buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer))
+		}
+		responseFunc = func() error {
+			defer timer.SetTimeout(p.Timeouts.UplinkOnly)
+			return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
+		}
+	}
+
+	if newCtx != nil {
+		ctx = newCtx
+	}
+
+	responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
+	if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
+		common.Interrupt(link.Reader)
+		common.Interrupt(link.Writer)
+		return newError("connection ends").Base(err)
+	}
+
+	return nil
+}
+
+// creates a tun interface on netstack given a configuration
+func (h *Handler) makeVirtualTun(bind *netBindClient) (Tunnel, error) {
+	t, err := h.conf.createTun()(h.endpoints, int(h.conf.Mtu), nil)
+	if err != nil {
+		return nil, err
+	}
+
+	bind.dnsOption.IPv4Enable = h.hasIPv4
+	bind.dnsOption.IPv6Enable = h.hasIPv6
+
+	if err = t.BuildDevice(h.ipc, bind); err != nil {
+		_ = t.Close()
+		return nil, err
+	}
+	return t, nil
+}

proxy/wireguard/config.go

@@ -0,0 +1,32 @@
+package wireguard
+
+func (c *DeviceConfig) preferIP4() bool {
+	return c.DomainStrategy == DeviceConfig_FORCE_IP ||
+		c.DomainStrategy == DeviceConfig_FORCE_IP4 ||
+		c.DomainStrategy == DeviceConfig_FORCE_IP46
+}
+
+func (c *DeviceConfig) preferIP6() bool {
+	return c.DomainStrategy == DeviceConfig_FORCE_IP ||
+		c.DomainStrategy == DeviceConfig_FORCE_IP6 ||
+		c.DomainStrategy == DeviceConfig_FORCE_IP64
+}
+
+func (c *DeviceConfig) hasFallback() bool {
+	return c.DomainStrategy == DeviceConfig_FORCE_IP46 || c.DomainStrategy == DeviceConfig_FORCE_IP64
+}
+
+func (c *DeviceConfig) fallbackIP4() bool {
+	return c.DomainStrategy == DeviceConfig_FORCE_IP64
+}
+
+func (c *DeviceConfig) fallbackIP6() bool {
+	return c.DomainStrategy == DeviceConfig_FORCE_IP46
+}
+
+func (c *DeviceConfig) createTun() tunCreator {
+	if c.KernelMode {
+		return createKernelTun
+	}
+	return createGVisorTun
+}

proxy/wireguard/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v4.25.0
 // source: proxy/wireguard/config.proto
 
 package wireguard
@@ -20,6 +20,61 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type DeviceConfig_DomainStrategy int32
+
+const (
+	DeviceConfig_FORCE_IP   DeviceConfig_DomainStrategy = 0
+	DeviceConfig_FORCE_IP4  DeviceConfig_DomainStrategy = 1
+	DeviceConfig_FORCE_IP6  DeviceConfig_DomainStrategy = 2
+	DeviceConfig_FORCE_IP46 DeviceConfig_DomainStrategy = 3
+	DeviceConfig_FORCE_IP64 DeviceConfig_DomainStrategy = 4
+)
+
+// Enum value maps for DeviceConfig_DomainStrategy.
+var (
+	DeviceConfig_DomainStrategy_name = map[int32]string{
+		0: "FORCE_IP",
+		1: "FORCE_IP4",
+		2: "FORCE_IP6",
+		3: "FORCE_IP46",
+		4: "FORCE_IP64",
+	}
+	DeviceConfig_DomainStrategy_value = map[string]int32{
+		"FORCE_IP":   0,
+		"FORCE_IP4":  1,
+		"FORCE_IP6":  2,
+		"FORCE_IP46": 3,
+		"FORCE_IP64": 4,
+	}
+)
+
+func (x DeviceConfig_DomainStrategy) Enum() *DeviceConfig_DomainStrategy {
+	p := new(DeviceConfig_DomainStrategy)
+	*p = x
+	return p
+}
+
+func (x DeviceConfig_DomainStrategy) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (DeviceConfig_DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
+	return file_proxy_wireguard_config_proto_enumTypes[0].Descriptor()
+}
+
+func (DeviceConfig_DomainStrategy) Type() protoreflect.EnumType {
+	return &file_proxy_wireguard_config_proto_enumTypes[0]
+}
+
+func (x DeviceConfig_DomainStrategy) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use DeviceConfig_DomainStrategy.Descriptor instead.
+func (DeviceConfig_DomainStrategy) EnumDescriptor() ([]byte, []int) {
+	return file_proxy_wireguard_config_proto_rawDescGZIP(), []int{1, 0}
+}
+
 type PeerConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -28,7 +83,7 @@ type PeerConfig struct {
 	PublicKey    string   `protobuf:"bytes,1,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty"`
 	PreSharedKey string   `protobuf:"bytes,2,opt,name=pre_shared_key,json=preSharedKey,proto3" json:"pre_shared_key,omitempty"`
 	Endpoint     string   `protobuf:"bytes,3,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
-	KeepAlive    int32    `protobuf:"varint,4,opt,name=keep_alive,json=keepAlive,proto3" json:"keep_alive,omitempty"`
+	KeepAlive    uint32   `protobuf:"varint,4,opt,name=keep_alive,json=keepAlive,proto3" json:"keep_alive,omitempty"`
 	AllowedIps   []string `protobuf:"bytes,5,rep,name=allowed_ips,json=allowedIps,proto3" json:"allowed_ips,omitempty"`
 }
 
@@ -85,7 +140,7 @@ func (x *PeerConfig) GetEndpoint() string {
 	return ""
 }
 
-func (x *PeerConfig) GetKeepAlive() int32 {
+func (x *PeerConfig) GetKeepAlive() uint32 {
 	if x != nil {
 		return x.KeepAlive
 	}
@@ -110,6 +165,9 @@ type DeviceConfig struct {
 	Mtu            int32                       `protobuf:"varint,4,opt,name=mtu,proto3" json:"mtu,omitempty"`
 	NumWorkers     int32                       `protobuf:"varint,5,opt,name=num_workers,json=numWorkers,proto3" json:"num_workers,omitempty"`
 	Reserved       []byte                      `protobuf:"bytes,6,opt,name=reserved,proto3" json:"reserved,omitempty"`
+	DomainStrategy DeviceConfig_DomainStrategy `protobuf:"varint,7,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.proxy.wireguard.DeviceConfig_DomainStrategy" json:"domain_strategy,omitempty"`
+	IsClient       bool                        `protobuf:"varint,8,opt,name=is_client,json=isClient,proto3" json:"is_client,omitempty"`
+	KernelMode     bool                        `protobuf:"varint,9,opt,name=kernel_mode,json=kernelMode,proto3" json:"kernel_mode,omitempty"`
 }
 
 func (x *DeviceConfig) Reset() {
@@ -186,6 +244,27 @@ func (x *DeviceConfig) GetReserved() []byte {
 	return nil
 }
 
+func (x *DeviceConfig) GetDomainStrategy() DeviceConfig_DomainStrategy {
+	if x != nil {
+		return x.DomainStrategy
+	}
+	return DeviceConfig_FORCE_IP
+}
+
+func (x *DeviceConfig) GetIsClient() bool {
+	if x != nil {
+		return x.IsClient
+	}
+	return false
+}
+
+func (x *DeviceConfig) GetKernelMode() bool {
+	if x != nil {
+		return x.KernelMode
+	}
+	return false
+}
+
 var File_proxy_wireguard_config_proto protoreflect.FileDescriptor
 
 var file_proxy_wireguard_config_proto_rawDesc = []byte{
@@ -200,10 +279,10 @@ var file_proxy_wireguard_config_proto_rawDesc = []byte{
 	0x68, 0x61, 0x72, 0x65, 0x64, 0x4b, 0x65, 0x79, 0x12, 0x1a, 0x0a, 0x08, 0x65, 0x6e, 0x64, 0x70,
 	0x6f, 0x69, 0x6e, 0x74, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x65, 0x6e, 0x64, 0x70,
 	0x6f, 0x69, 0x6e, 0x74, 0x12, 0x1d, 0x0a, 0x0a, 0x6b, 0x65, 0x65, 0x70, 0x5f, 0x61, 0x6c, 0x69,
-	0x76, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x05, 0x52, 0x09, 0x6b, 0x65, 0x65, 0x70, 0x41, 0x6c,
+	0x76, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x09, 0x6b, 0x65, 0x65, 0x70, 0x41, 0x6c,
 	0x69, 0x76, 0x65, 0x12, 0x1f, 0x0a, 0x0b, 0x61, 0x6c, 0x6c, 0x6f, 0x77, 0x65, 0x64, 0x5f, 0x69,
 	0x70, 0x73, 0x18, 0x05, 0x20, 0x03, 0x28, 0x09, 0x52, 0x0a, 0x61, 0x6c, 0x6c, 0x6f, 0x77, 0x65,
-	0x64, 0x49, 0x70, 0x73, 0x22, 0xd0, 0x01, 0x0a, 0x0c, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x43,
+	0x64, 0x49, 0x70, 0x73, 0x22, 0xc8, 0x03, 0x0a, 0x0c, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x43,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x1d, 0x0a, 0x0a, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74, 0x5f,
 	0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x73, 0x65, 0x63, 0x72, 0x65,
 	0x74, 0x4b, 0x65, 0x79, 0x12, 0x1a, 0x0a, 0x08, 0x65, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
@@ -216,13 +295,29 @@ var file_proxy_wireguard_config_proto_rawDesc = []byte{
 	0x6d, 0x5f, 0x77, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73, 0x18, 0x05, 0x20, 0x01, 0x28, 0x05, 0x52,
 	0x0a, 0x6e, 0x75, 0x6d, 0x57, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73, 0x12, 0x1a, 0x0a, 0x08, 0x72,
 	0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x08, 0x72,
-	0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
+	0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x12, 0x5a, 0x0a, 0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69,
-	0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x77, 0x69, 0x72, 0x65, 0x67, 0x75,
+	0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x07, 0x20, 0x01, 0x28, 0x0e,
-	0x61, 0x72, 0x64, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
+	0x32, 0x31, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x77, 0x69,
-	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
+	0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64, 0x2e, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x43, 0x6f,
-	0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x77, 0x69, 0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64,
+	0x6e, 0x66, 0x69, 0x67, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74,
-	0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x57, 0x69,
+	0x65, 0x67, 0x79, 0x52, 0x0e, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74,
-	0x72, 0x65, 0x47, 0x75, 0x61, 0x72, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x65, 0x67, 0x79, 0x12, 0x1b, 0x0a, 0x09, 0x69, 0x73, 0x5f, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74,
+	0x18, 0x08, 0x20, 0x01, 0x28, 0x08, 0x52, 0x08, 0x69, 0x73, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74,
+	0x12, 0x1f, 0x0a, 0x0b, 0x6b, 0x65, 0x72, 0x6e, 0x65, 0x6c, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x18,
+	0x09, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0a, 0x6b, 0x65, 0x72, 0x6e, 0x65, 0x6c, 0x4d, 0x6f, 0x64,
+	0x65, 0x22, 0x5c, 0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74,
+	0x65, 0x67, 0x79, 0x12, 0x0c, 0x0a, 0x08, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x10,
+	0x00, 0x12, 0x0d, 0x0a, 0x09, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x01,
+	0x12, 0x0d, 0x0a, 0x09, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x10, 0x02, 0x12,
+	0x0e, 0x0a, 0x0a, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x36, 0x10, 0x03, 0x12,
+	0x0e, 0x0a, 0x0a, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x34, 0x10, 0x04, 0x42,
+	0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78,
+	0x79, 0x2e, 0x77, 0x69, 0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64, 0x50, 0x01, 0x5a, 0x29, 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, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x77,
+	0x69, 0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e,
+	0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x57, 0x69, 0x72, 0x65, 0x47, 0x75, 0x61, 0x72, 0x64, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -237,18 +332,21 @@ func file_proxy_wireguard_config_proto_rawDescGZIP() []byte {
 	return file_proxy_wireguard_config_proto_rawDescData
 }
 
+var file_proxy_wireguard_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_proxy_wireguard_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_proxy_wireguard_config_proto_goTypes = []interface{}{
-	(*PeerConfig)(nil),   // 0: xray.proxy.wireguard.PeerConfig
+	(DeviceConfig_DomainStrategy)(0), // 0: xray.proxy.wireguard.DeviceConfig.DomainStrategy
-	(*DeviceConfig)(nil), // 1: xray.proxy.wireguard.DeviceConfig
+	(*PeerConfig)(nil),               // 1: xray.proxy.wireguard.PeerConfig
+	(*DeviceConfig)(nil),             // 2: xray.proxy.wireguard.DeviceConfig
 }
 var file_proxy_wireguard_config_proto_depIdxs = []int32{
-	0, // 0: xray.proxy.wireguard.DeviceConfig.peers:type_name -> xray.proxy.wireguard.PeerConfig
+	1, // 0: xray.proxy.wireguard.DeviceConfig.peers:type_name -> xray.proxy.wireguard.PeerConfig
-	1, // [1:1] is the sub-list for method output_type
+	0, // 1: xray.proxy.wireguard.DeviceConfig.domain_strategy:type_name -> xray.proxy.wireguard.DeviceConfig.DomainStrategy
-	1, // [1:1] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension extendee
+	2, // [2:2] is the sub-list for extension type_name
-	0, // [0:1] is the sub-list for field type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
 }
 
 func init() { file_proxy_wireguard_config_proto_init() }
@@ -287,13 +385,14 @@ func file_proxy_wireguard_config_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proxy_wireguard_config_proto_rawDesc,
-			NumEnums:      0,
+			NumEnums:      1,
 			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_proxy_wireguard_config_proto_goTypes,
 		DependencyIndexes: file_proxy_wireguard_config_proto_depIdxs,
+		EnumInfos:         file_proxy_wireguard_config_proto_enumTypes,
 		MessageInfos:      file_proxy_wireguard_config_proto_msgTypes,
 	}.Build()
 	File_proxy_wireguard_config_proto = out.File

proxy/wireguard/config.proto

@@ -10,15 +10,25 @@ message PeerConfig {
   string public_key = 1;
   string pre_shared_key = 2;
   string endpoint = 3;
-    int32 keep_alive = 4;
+  uint32 keep_alive = 4;
   repeated string allowed_ips = 5;
 }
 
 message DeviceConfig {
+  enum DomainStrategy {
+    FORCE_IP = 0;
+    FORCE_IP4 = 1;
+    FORCE_IP6 = 2;
+    FORCE_IP46 = 3;
+    FORCE_IP64 = 4;
+  }
   string secret_key = 1;
   repeated string endpoint = 2;
   repeated PeerConfig peers = 3;
   int32 mtu = 4;
   int32 num_workers = 5;
   bytes reserved = 6;
+  DomainStrategy domain_strategy = 7;
+  bool is_client = 8;
+  bool kernel_mode = 9;
 }

proxy/wireguard/gvisortun/tun.go

@@ -0,0 +1,230 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
+ */
+
+package gvisortun
+
+import (
+	"context"
+	"fmt"
+	"net/netip"
+	"os"
+	"syscall"
+
+	"golang.zx2c4.com/wireguard/tun"
+	"gvisor.dev/gvisor/pkg/buffer"
+	"gvisor.dev/gvisor/pkg/tcpip"
+	"gvisor.dev/gvisor/pkg/tcpip/adapters/gonet"
+	"gvisor.dev/gvisor/pkg/tcpip/header"
+	"gvisor.dev/gvisor/pkg/tcpip/link/channel"
+	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
+	"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/icmp"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+)
+
+type netTun struct {
+	ep             *channel.Endpoint
+	stack          *stack.Stack
+	events         chan tun.Event
+	incomingPacket chan *buffer.View
+	mtu            int
+	hasV4, hasV6   bool
+}
+
+type Net netTun
+
+func CreateNetTUN(localAddresses []netip.Addr, mtu int, promiscuousMode bool) (tun.Device, *Net, *stack.Stack, error) {
+	opts := stack.Options{
+		NetworkProtocols:   []stack.NetworkProtocolFactory{ipv4.NewProtocol, ipv6.NewProtocol},
+		TransportProtocols: []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol, icmp.NewProtocol6, icmp.NewProtocol4},
+		HandleLocal:        !promiscuousMode,
+	}
+	dev := &netTun{
+		ep:             channel.New(1024, uint32(mtu), ""),
+		stack:          stack.New(opts),
+		events:         make(chan tun.Event, 1),
+		incomingPacket: make(chan *buffer.View),
+		mtu:            mtu,
+	}
+	dev.ep.AddNotify(dev)
+	tcpipErr := dev.stack.CreateNIC(1, dev.ep)
+	if tcpipErr != nil {
+		return nil, nil, dev.stack, fmt.Errorf("CreateNIC: %v", tcpipErr)
+	}
+	for _, ip := range localAddresses {
+		var protoNumber tcpip.NetworkProtocolNumber
+		if ip.Is4() {
+			protoNumber = ipv4.ProtocolNumber
+		} else if ip.Is6() {
+			protoNumber = ipv6.ProtocolNumber
+		}
+		protoAddr := tcpip.ProtocolAddress{
+			Protocol:          protoNumber,
+			AddressWithPrefix: tcpip.AddrFromSlice(ip.AsSlice()).WithPrefix(),
+		}
+		tcpipErr := dev.stack.AddProtocolAddress(1, protoAddr, stack.AddressProperties{})
+		if tcpipErr != nil {
+			return nil, nil, dev.stack, fmt.Errorf("AddProtocolAddress(%v): %v", ip, tcpipErr)
+		}
+		if ip.Is4() {
+			dev.hasV4 = true
+		} else if ip.Is6() {
+			dev.hasV6 = true
+		}
+	}
+	if dev.hasV4 {
+		dev.stack.AddRoute(tcpip.Route{Destination: header.IPv4EmptySubnet, NIC: 1})
+	}
+	if dev.hasV6 {
+		dev.stack.AddRoute(tcpip.Route{Destination: header.IPv6EmptySubnet, NIC: 1})
+	}
+	if promiscuousMode {
+		// enable promiscuous mode to handle all packets processed by netstack
+		dev.stack.SetPromiscuousMode(1, true)
+		dev.stack.SetSpoofing(1, true)
+	}
+
+	opt := tcpip.CongestionControlOption("cubic")
+	if err := dev.stack.SetTransportProtocolOption(tcp.ProtocolNumber, &opt); err != nil {
+		return nil, nil, dev.stack, fmt.Errorf("SetTransportProtocolOption(%d, &%T(%s)): %s", tcp.ProtocolNumber, opt, opt, err)
+	}
+
+	dev.events <- tun.EventUp
+	return dev, (*Net)(dev), dev.stack, nil
+}
+
+// BatchSize implements tun.Device
+func (tun *netTun) BatchSize() int {
+	return 1
+}
+
+// Name implements tun.Device
+func (tun *netTun) Name() (string, error) {
+	return "go", nil
+}
+
+// File implements tun.Device
+func (tun *netTun) File() *os.File {
+	return nil
+}
+
+// Events implements tun.Device
+func (tun *netTun) Events() <-chan tun.Event {
+	return tun.events
+}
+
+// Read implements tun.Device
+
+func (tun *netTun) Read(buf [][]byte, sizes []int, offset int) (int, error) {
+	view, ok := <-tun.incomingPacket
+	if !ok {
+		return 0, os.ErrClosed
+	}
+
+	n, err := view.Read(buf[0][offset:])
+	if err != nil {
+		return 0, err
+	}
+	sizes[0] = n
+	return 1, nil
+}
+
+// Write implements tun.Device
+func (tun *netTun) Write(buf [][]byte, offset int) (int, error) {
+	for _, buf := range buf {
+		packet := buf[offset:]
+		if len(packet) == 0 {
+			continue
+		}
+
+		pkb := stack.NewPacketBuffer(stack.PacketBufferOptions{Payload: buffer.MakeWithData(packet)})
+		switch packet[0] >> 4 {
+		case 4:
+			tun.ep.InjectInbound(header.IPv4ProtocolNumber, pkb)
+		case 6:
+			tun.ep.InjectInbound(header.IPv6ProtocolNumber, pkb)
+		default:
+			return 0, syscall.EAFNOSUPPORT
+		}
+	}
+	return len(buf), nil
+}
+
+// WriteNotify implements channel.Notification
+func (tun *netTun) WriteNotify() {
+	pkt := tun.ep.Read()
+	if pkt.IsNil() {
+		return
+	}
+
+	view := pkt.ToView()
+	pkt.DecRef()
+
+	tun.incomingPacket <- view
+}
+
+// Flush  implements tun.Device
+func (tun *netTun) Flush() error {
+	return nil
+}
+
+// Close implements tun.Device
+func (tun *netTun) Close() error {
+	tun.stack.RemoveNIC(1)
+
+	if tun.events != nil {
+		close(tun.events)
+	}
+
+	tun.ep.Close()
+
+	if tun.incomingPacket != nil {
+		close(tun.incomingPacket)
+	}
+
+	return nil
+}
+
+// MTU  implements tun.Device
+func (tun *netTun) MTU() (int, error) {
+	return tun.mtu, nil
+}
+
+func convertToFullAddr(endpoint netip.AddrPort) (tcpip.FullAddress, tcpip.NetworkProtocolNumber) {
+	var protoNumber tcpip.NetworkProtocolNumber
+	if endpoint.Addr().Is4() {
+		protoNumber = ipv4.ProtocolNumber
+	} else {
+		protoNumber = ipv6.ProtocolNumber
+	}
+	return tcpip.FullAddress{
+		NIC:  1,
+		Addr: tcpip.AddrFromSlice(endpoint.Addr().AsSlice()),
+		Port: endpoint.Port(),
+	}, protoNumber
+}
+
+func (net *Net) DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (*gonet.TCPConn, error) {
+	fa, pn := convertToFullAddr(addr)
+	return gonet.DialContextTCP(ctx, net.stack, fa, pn)
+}
+
+func (net *Net) DialUDPAddrPort(laddr, raddr netip.AddrPort) (*gonet.UDPConn, error) {
+	var lfa, rfa *tcpip.FullAddress
+	var pn tcpip.NetworkProtocolNumber
+	if laddr.IsValid() || laddr.Port() > 0 {
+		var addr tcpip.FullAddress
+		addr, pn = convertToFullAddr(laddr)
+		lfa = &addr
+	}
+	if raddr.IsValid() || raddr.Port() > 0 {
+		var addr tcpip.FullAddress
+		addr, pn = convertToFullAddr(raddr)
+		rfa = &addr
+	}
+	return gonet.DialUDP(net.stack, lfa, rfa, pn)
+}

proxy/wireguard/server.go

@@ -0,0 +1,185 @@
+package wireguard
+
+import (
+	"context"
+	"errors"
+	"io"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/log"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/signal"
+	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/dns"
+	"github.com/xtls/xray-core/features/policy"
+	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/transport/internet/stat"
+)
+
+var nullDestination = net.TCPDestination(net.AnyIP, 0)
+
+type Server struct {
+	bindServer *netBindServer
+
+	info          routingInfo
+	policyManager policy.Manager
+}
+
+type routingInfo struct {
+	ctx         context.Context
+	dispatcher  routing.Dispatcher
+	inboundTag  *session.Inbound
+	outboundTag *session.Outbound
+	contentTag  *session.Content
+}
+
+func NewServer(ctx context.Context, conf *DeviceConfig) (*Server, error) {
+	v := core.MustFromContext(ctx)
+
+	endpoints, hasIPv4, hasIPv6, err := parseEndpoints(conf)
+	if err != nil {
+		return nil, err
+	}
+
+	server := &Server{
+		bindServer: &netBindServer{
+			netBind: netBind{
+				dns: v.GetFeature(dns.ClientType()).(dns.Client),
+				dnsOption: dns.IPOption{
+					IPv4Enable: hasIPv4,
+					IPv6Enable: hasIPv6,
+				},
+			},
+		},
+		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+	}
+
+	tun, err := conf.createTun()(endpoints, int(conf.Mtu), server.forwardConnection)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = tun.BuildDevice(createIPCRequest(conf), server.bindServer); err != nil {
+		_ = tun.Close()
+		return nil, err
+	}
+
+	return server, nil
+}
+
+// Network implements proxy.Inbound.
+func (*Server) Network() []net.Network {
+	return []net.Network{net.Network_UDP}
+}
+
+// Process implements proxy.Inbound.
+func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher) error {
+	inbound := session.InboundFromContext(ctx)
+	inbound.Name = "wireguard"
+	inbound.SetCanSpliceCopy(3)
+
+	s.info = routingInfo{
+		ctx:         core.ToBackgroundDetachedContext(ctx),
+		dispatcher:  dispatcher,
+		inboundTag:  session.InboundFromContext(ctx),
+		outboundTag: session.OutboundFromContext(ctx),
+		contentTag:  session.ContentFromContext(ctx),
+	}
+
+	ep, err := s.bindServer.ParseEndpoint(conn.RemoteAddr().String())
+	if err != nil {
+		return err
+	}
+
+	nep := ep.(*netEndpoint)
+	nep.conn = conn
+
+	reader := buf.NewPacketReader(conn)
+	for {
+		mpayload, err := reader.ReadMultiBuffer()
+		if err != nil {
+			return err
+		}
+
+		for _, payload := range mpayload {
+			v, ok := <-s.bindServer.readQueue
+			if !ok {
+				return nil
+			}
+			i, err := payload.Read(v.buff)
+
+			v.bytes = i
+			v.endpoint = nep
+			v.err = err
+			v.waiter.Done()
+			if err != nil && errors.Is(err, io.EOF) {
+				nep.conn = nil
+				return nil
+			}
+		}
+	}
+}
+
+func (s *Server) forwardConnection(dest net.Destination, conn net.Conn) {
+	if s.info.dispatcher == nil {
+		newError("unexpected: dispatcher == nil").AtError().WriteToLog()
+		return
+	}
+	defer conn.Close()
+
+	ctx, cancel := context.WithCancel(core.ToBackgroundDetachedContext(s.info.ctx))
+	plcy := s.policyManager.ForLevel(0)
+	timer := signal.CancelAfterInactivity(ctx, cancel, plcy.Timeouts.ConnectionIdle)
+
+	ctx = log.ContextWithAccessMessage(ctx, &log.AccessMessage{
+		From:   nullDestination,
+		To:     dest,
+		Status: log.AccessAccepted,
+		Reason: "",
+	})
+
+	if s.info.inboundTag != nil {
+		ctx = session.ContextWithInbound(ctx, s.info.inboundTag)
+	}
+	if s.info.outboundTag != nil {
+		ctx = session.ContextWithOutbound(ctx, s.info.outboundTag)
+	}
+	if s.info.contentTag != nil {
+		ctx = session.ContextWithContent(ctx, s.info.contentTag)
+	}
+
+	link, err := s.info.dispatcher.Dispatch(ctx, dest)
+	if err != nil {
+		newError("dispatch connection").Base(err).AtError().WriteToLog()
+	}
+	defer cancel()
+
+	requestDone := func() error {
+		defer timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
+		if err := buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer)); err != nil {
+			return newError("failed to transport all TCP request").Base(err)
+		}
+
+		return nil
+	}
+
+	responseDone := func() error {
+		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
+		if err := buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer)); err != nil {
+			return newError("failed to transport all TCP response").Base(err)
+		}
+
+		return nil
+	}
+
+	requestDonePost := task.OnSuccess(requestDone, task.Close(link.Writer))
+	if err := task.Run(ctx, requestDonePost, responseDone); err != nil {
+		common.Interrupt(link.Reader)
+		common.Interrupt(link.Writer)
+		newError("connection ends").Base(err).AtDebug().WriteToLog()
+		return
+	}
+}

proxy/wireguard/tun.go

@@ -1,303 +1,205 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
- */
-
 package wireguard
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net"
 	"net/netip"
-	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
 
-	"github.com/sagernet/wireguard-go/tun"
+	"github.com/xtls/xray-core/common/log"
-	"github.com/xtls/xray-core/features/dns"
+	xnet "github.com/xtls/xray-core/common/net"
-	"gvisor.dev/gvisor/pkg/buffer"
+	"github.com/xtls/xray-core/proxy/wireguard/gvisortun"
 	"gvisor.dev/gvisor/pkg/tcpip"
 	"gvisor.dev/gvisor/pkg/tcpip/adapters/gonet"
-	"gvisor.dev/gvisor/pkg/tcpip/header"
-	"gvisor.dev/gvisor/pkg/tcpip/link/channel"
-	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
-	"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
-	"gvisor.dev/gvisor/pkg/tcpip/stack"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+	"gvisor.dev/gvisor/pkg/waiter"
+
+	"golang.zx2c4.com/wireguard/conn"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun"
 )
 
-type netTun struct {
+type tunCreator func(localAddresses []netip.Addr, mtu int, handler promiscuousModeHandler) (Tunnel, error)
-	ep             *channel.Endpoint
+
-	stack          *stack.Stack
+type promiscuousModeHandler func(dest xnet.Destination, conn net.Conn)
-	events         chan tun.Event
+
-	incomingPacket chan *buffer.View
+type Tunnel interface {
-	mtu            int
+	BuildDevice(ipc string, bind conn.Bind) error
-	dnsClient      dns.Client
+	DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (net.Conn, error)
-	hasV4, hasV6   bool
+	DialUDPAddrPort(laddr, raddr netip.AddrPort) (net.Conn, error)
+	Close() error
 }
 
-type Net netTun
+type tunnel struct {
-
+	tun    tun.Device
-func CreateNetTUN(localAddresses []netip.Addr, dnsClient dns.Client, mtu int) (tun.Device, *Net, error) {
+	device *device.Device
-	opts := stack.Options{
+	rw     sync.Mutex
-		NetworkProtocols:   []stack.NetworkProtocolFactory{ipv4.NewProtocol, ipv6.NewProtocol},
-		TransportProtocols: []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol},
-		HandleLocal:        true,
-	}
-	dev := &netTun{
-		ep:             channel.New(1024, uint32(mtu), ""),
-		stack:          stack.New(opts),
-		events:         make(chan tun.Event, 10),
-		incomingPacket: make(chan *buffer.View),
-		dnsClient:      dnsClient,
-		mtu:            mtu,
-	}
-	dev.ep.AddNotify(dev)
-	tcpipErr := dev.stack.CreateNIC(1, dev.ep)
-	if tcpipErr != nil {
-		return nil, nil, fmt.Errorf("CreateNIC: %v", tcpipErr)
-	}
-	for _, ip := range localAddresses {
-		var protoNumber tcpip.NetworkProtocolNumber
-		if ip.Is4() {
-			protoNumber = ipv4.ProtocolNumber
-		} else if ip.Is6() {
-			protoNumber = ipv6.ProtocolNumber
-		}
-		protoAddr := tcpip.ProtocolAddress{
-			Protocol:          protoNumber,
-			AddressWithPrefix: tcpip.AddrFromSlice(ip.AsSlice()).WithPrefix(),
-		}
-		tcpipErr := dev.stack.AddProtocolAddress(1, protoAddr, stack.AddressProperties{})
-		if tcpipErr != nil {
-			return nil, nil, fmt.Errorf("AddProtocolAddress(%v): %v", ip, tcpipErr)
-		}
-		if ip.Is4() {
-			dev.hasV4 = true
-		} else if ip.Is6() {
-			dev.hasV6 = true
-		}
-	}
-	if dev.hasV4 {
-		dev.stack.AddRoute(tcpip.Route{Destination: header.IPv4EmptySubnet, NIC: 1})
-	}
-	if dev.hasV6 {
-		dev.stack.AddRoute(tcpip.Route{Destination: header.IPv6EmptySubnet, NIC: 1})
 }
 
-	dev.events <- tun.EventUp
+func (t *tunnel) BuildDevice(ipc string, bind conn.Bind) (err error) {
-	return dev, (*Net)(dev), nil
+	t.rw.Lock()
+	defer t.rw.Unlock()
+
+	if t.device != nil {
+		return errors.New("device is already initialized")
 	}
 
-func (tun *netTun) Name() (string, error) {
+	logger := &device.Logger{
-	return "go", nil
+		Verbosef: func(format string, args ...any) {
+			log.Record(&log.GeneralMessage{
+				Severity: log.Severity_Debug,
+				Content:  fmt.Sprintf(format, args...),
+			})
+		},
+		Errorf: func(format string, args ...any) {
+			log.Record(&log.GeneralMessage{
+				Severity: log.Severity_Error,
+				Content:  fmt.Sprintf(format, args...),
+			})
+		},
 	}
 
-func (tun *netTun) File() *os.File {
+	t.device = device.NewDevice(t.tun, bind, logger)
+	if err = t.device.IpcSet(ipc); err != nil {
+		return err
+	}
+	if err = t.device.Up(); err != nil {
+		return err
+	}
 	return nil
 }
 
-func (tun *netTun) Events() chan tun.Event {
+func (t *tunnel) Close() (err error) {
-	return tun.events
+	t.rw.Lock()
+	defer t.rw.Unlock()
+
+	if t.device == nil {
+		return nil
 	}
 
-func (tun *netTun) Read(buf []byte, offset int) (int, error) {
+	t.device.Close()
-	view, ok := <-tun.incomingPacket
+	t.device = nil
-	if !ok {
+	err = t.tun.Close()
-		return 0, os.ErrClosed
+	t.tun = nil
+	return nil
 }
 
-	return view.Read(buf[offset:])
+func CalculateInterfaceName(name string) (tunName string) {
+	if runtime.GOOS == "darwin" {
+		tunName = "utun"
+	} else if name != "" {
+		tunName = name
+	} else {
+		tunName = "tun"
 	}
-
+	interfaces, err := net.Interfaces()
-func (tun *netTun) Write(buf []byte, offset int) (int, error) {
+	if err != nil {
-	packet := buf[offset:]
+		return
-	if len(packet) == 0 {
-		return 0, nil
 	}
-
+	var tunIndex int
-	pkb := stack.NewPacketBuffer(stack.PacketBufferOptions{Payload: buffer.MakeWithData(packet)})
+	for _, netInterface := range interfaces {
-	switch packet[0] >> 4 {
+		if strings.HasPrefix(netInterface.Name, tunName) {
-	case 4:
+			index, parseErr := strconv.ParseInt(netInterface.Name[len(tunName):], 10, 16)
-		tun.ep.InjectInbound(header.IPv4ProtocolNumber, pkb)
+			if parseErr == nil {
-	case 6:
+				tunIndex = int(index) + 1
-		tun.ep.InjectInbound(header.IPv6ProtocolNumber, pkb)
 			}
-
-	return len(buf), nil
 		}
-
+	}
-func (tun *netTun) WriteNotify() {
+	tunName = fmt.Sprintf("%s%d", tunName, tunIndex)
-	pkt := tun.ep.Read()
-	if pkt == nil {
 	return
 }
 
-	view := pkt.ToView()
+var _ Tunnel = (*gvisorNet)(nil)
-	pkt.DecRef()
 
-	tun.incomingPacket <- view
+type gvisorNet struct {
+	tunnel
+	net *gvisortun.Net
 }
 
-func (tun *netTun) Flush() error {
+func (g *gvisorNet) Close() error {
-	return nil
+	return g.tunnel.Close()
 }
 
-func (tun *netTun) Close() error {
+func (g *gvisorNet) DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (
-	tun.stack.RemoveNIC(1)
+	net.Conn, error,
-
+) {
-	if tun.events != nil {
+	return g.net.DialContextTCPAddrPort(ctx, addr)
-		close(tun.events)
 }
 
-	tun.ep.Close()
+func (g *gvisorNet) DialUDPAddrPort(laddr, raddr netip.AddrPort) (net.Conn, error) {
-
+	return g.net.DialUDPAddrPort(laddr, raddr)
-	if tun.incomingPacket != nil {
-		close(tun.incomingPacket)
 }
 
-	return nil
+func createGVisorTun(localAddresses []netip.Addr, mtu int, handler promiscuousModeHandler) (Tunnel, error) {
+	out := &gvisorNet{}
+	tun, n, stack, err := gvisortun.CreateNetTUN(localAddresses, mtu, handler != nil)
+	if err != nil {
+		return nil, err
 	}
 
-func (tun *netTun) MTU() (int, error) {
+	if handler != nil {
-	return tun.mtu, nil
+		// handler is only used for promiscuous mode
+		// capture all packets and send to handler
+
+		tcpForwarder := tcp.NewForwarder(stack, 0, 65535, func(r *tcp.ForwarderRequest) {
+			go func(r *tcp.ForwarderRequest) {
+				var (
+					wq waiter.Queue
+					id = r.ID()
+				)
+
+				// Perform a TCP three-way handshake.
+				ep, err := r.CreateEndpoint(&wq)
+				if err != nil {
+					newError(err.String()).AtError().WriteToLog()
+					r.Complete(true)
+					return
+				}
+				r.Complete(false)
+				defer ep.Close()
+
+				// enable tcp keep-alive to prevent hanging connections
+				ep.SocketOptions().SetKeepAlive(true)
+
+				// local address is actually destination
+				handler(xnet.TCPDestination(xnet.IPAddress(id.LocalAddress.AsSlice()), xnet.Port(id.LocalPort)), gonet.NewTCPConn(&wq, ep))
+			}(r)
+		})
+		stack.SetTransportProtocolHandler(tcp.ProtocolNumber, tcpForwarder.HandlePacket)
+
+		udpForwarder := udp.NewForwarder(stack, func(r *udp.ForwarderRequest) {
+			go func(r *udp.ForwarderRequest) {
+				var (
+					wq waiter.Queue
+					id = r.ID()
+				)
+
+				ep, err := r.CreateEndpoint(&wq)
+				if err != nil {
+					newError(err.String()).AtError().WriteToLog()
+					return
+				}
+				defer ep.Close()
+
+				// prevents hanging connections and ensure timely release
+				ep.SocketOptions().SetLinger(tcpip.LingerOption{
+					Enabled: true,
+					Timeout: 15 * time.Second,
+				})
+
+				handler(xnet.UDPDestination(xnet.IPAddress(id.LocalAddress.AsSlice()), xnet.Port(id.LocalPort)), gonet.NewUDPConn(stack, &wq, ep))
+			}(r)
+		})
+		stack.SetTransportProtocolHandler(udp.ProtocolNumber, udpForwarder.HandlePacket)
 	}
 
-func convertToFullAddr(endpoint netip.AddrPort) (tcpip.FullAddress, tcpip.NetworkProtocolNumber) {
+	out.tun, out.net = tun, n
-	var protoNumber tcpip.NetworkProtocolNumber
+	return out, nil
-	if endpoint.Addr().Is4() {
-		protoNumber = ipv4.ProtocolNumber
-	} else {
-		protoNumber = ipv6.ProtocolNumber
-	}
-	return tcpip.FullAddress{
-		NIC:  1,
-		Addr: tcpip.AddrFromSlice(endpoint.Addr().AsSlice()),
-		Port: endpoint.Port(),
-	}, protoNumber
-}
-
-func (net *Net) DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (*gonet.TCPConn, error) {
-	fa, pn := convertToFullAddr(addr)
-	return gonet.DialContextTCP(ctx, net.stack, fa, pn)
-}
-
-func (net *Net) DialContextTCP(ctx context.Context, addr *net.TCPAddr) (*gonet.TCPConn, error) {
-	if addr == nil {
-		return net.DialContextTCPAddrPort(ctx, netip.AddrPort{})
-	}
-	ip, _ := netip.AddrFromSlice(addr.IP)
-	return net.DialContextTCPAddrPort(ctx, netip.AddrPortFrom(ip, uint16(addr.Port)))
-}
-
-func (net *Net) DialTCPAddrPort(addr netip.AddrPort) (*gonet.TCPConn, error) {
-	fa, pn := convertToFullAddr(addr)
-	return gonet.DialTCP(net.stack, fa, pn)
-}
-
-func (net *Net) DialTCP(addr *net.TCPAddr) (*gonet.TCPConn, error) {
-	if addr == nil {
-		return net.DialTCPAddrPort(netip.AddrPort{})
-	}
-	ip, _ := netip.AddrFromSlice(addr.IP)
-	return net.DialTCPAddrPort(netip.AddrPortFrom(ip, uint16(addr.Port)))
-}
-
-func (net *Net) ListenTCPAddrPort(addr netip.AddrPort) (*gonet.TCPListener, error) {
-	fa, pn := convertToFullAddr(addr)
-	return gonet.ListenTCP(net.stack, fa, pn)
-}
-
-func (net *Net) ListenTCP(addr *net.TCPAddr) (*gonet.TCPListener, error) {
-	if addr == nil {
-		return net.ListenTCPAddrPort(netip.AddrPort{})
-	}
-	ip, _ := netip.AddrFromSlice(addr.IP)
-	return net.ListenTCPAddrPort(netip.AddrPortFrom(ip, uint16(addr.Port)))
-}
-
-func (net *Net) DialUDPAddrPort(laddr, raddr netip.AddrPort) (*gonet.UDPConn, error) {
-	var lfa, rfa *tcpip.FullAddress
-	var pn tcpip.NetworkProtocolNumber
-	if laddr.IsValid() || laddr.Port() > 0 {
-		var addr tcpip.FullAddress
-		addr, pn = convertToFullAddr(laddr)
-		lfa = &addr
-	}
-	if raddr.IsValid() || raddr.Port() > 0 {
-		var addr tcpip.FullAddress
-		addr, pn = convertToFullAddr(raddr)
-		rfa = &addr
-	}
-	return gonet.DialUDP(net.stack, lfa, rfa, pn)
-}
-
-func (net *Net) ListenUDPAddrPort(laddr netip.AddrPort) (*gonet.UDPConn, error) {
-	return net.DialUDPAddrPort(laddr, netip.AddrPort{})
-}
-
-func (net *Net) DialUDP(laddr, raddr *net.UDPAddr) (*gonet.UDPConn, error) {
-	var la, ra netip.AddrPort
-	if laddr != nil {
-		ip, _ := netip.AddrFromSlice(laddr.IP)
-		la = netip.AddrPortFrom(ip, uint16(laddr.Port))
-	}
-	if raddr != nil {
-		ip, _ := netip.AddrFromSlice(raddr.IP)
-		ra = netip.AddrPortFrom(ip, uint16(raddr.Port))
-	}
-	return net.DialUDPAddrPort(la, ra)
-}
-
-func (net *Net) ListenUDP(laddr *net.UDPAddr) (*gonet.UDPConn, error) {
-	return net.DialUDP(laddr, nil)
-}
-
-func (n *Net) HasV4() bool {
-	return n.hasV4
-}
-
-func (n *Net) HasV6() bool {
-	return n.hasV6
-}
-
-func IsDomainName(s string) bool {
-	l := len(s)
-	if l == 0 || l > 254 || l == 254 && s[l-1] != '.' {
-		return false
-	}
-	last := byte('.')
-	nonNumeric := false
-	partlen := 0
-	for i := 0; i < len(s); i++ {
-		c := s[i]
-		switch {
-		default:
-			return false
-		case 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || c == '_':
-			nonNumeric = true
-			partlen++
-		case '0' <= c && c <= '9':
-			partlen++
-		case c == '-':
-			if last == '.' {
-				return false
-			}
-			partlen++
-			nonNumeric = true
-		case c == '.':
-			if last == '.' || last == '-' {
-				return false
-			}
-			if partlen > 63 || partlen == 0 {
-				return false
-			}
-			partlen = 0
-		}
-		last = c
-	}
-	if last == '-' || partlen > 63 {
-		return false
-	}
-	return nonNumeric
 }

proxy/wireguard/tun_default.go

@@ -0,0 +1,16 @@
+//go:build !linux || android
+
+package wireguard
+
+import (
+	"errors"
+	"net/netip"
+)
+
+func createKernelTun(localAddresses []netip.Addr, mtu int, handler promiscuousModeHandler) (t Tunnel, err error) {
+	return nil, errors.New("not implemented")
+}
+
+func KernelTunSupported() bool {
+	return false
+}

proxy/wireguard/tun_linux.go

@@ -0,0 +1,237 @@
+//go:build linux && !android
+
+package wireguard
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/netip"
+	"os"
+
+	"golang.org/x/sys/unix"
+
+	"github.com/sagernet/sing/common/control"
+	"github.com/vishvananda/netlink"
+	wgtun "golang.zx2c4.com/wireguard/tun"
+)
+
+type deviceNet struct {
+	tunnel
+	dialer net.Dialer
+
+	handle    *netlink.Handle
+	linkAddrs []netlink.Addr
+	routes    []*netlink.Route
+	rules     []*netlink.Rule
+}
+
+func newDeviceNet(interfaceName string) *deviceNet {
+	var dialer net.Dialer
+	bindControl := control.BindToInterface(control.DefaultInterfaceFinder(), interfaceName, -1)
+	dialer.Control = control.Append(dialer.Control, bindControl)
+	return &deviceNet{dialer: dialer}
+}
+
+func (d *deviceNet) DialContextTCPAddrPort(ctx context.Context, addr netip.AddrPort) (
+	net.Conn, error,
+) {
+	return d.dialer.DialContext(ctx, "tcp", addr.String())
+}
+
+func (d *deviceNet) DialUDPAddrPort(laddr, raddr netip.AddrPort) (net.Conn, error) {
+	dialer := d.dialer
+	dialer.LocalAddr = &net.UDPAddr{IP: laddr.Addr().AsSlice(), Port: int(laddr.Port())}
+	return dialer.DialContext(context.Background(), "udp", raddr.String())
+}
+
+func (d *deviceNet) Close() (err error) {
+	var errs []error
+	for _, rule := range d.rules {
+		if err = d.handle.RuleDel(rule); err != nil {
+			errs = append(errs, fmt.Errorf("failed to delete rule: %w", err))
+		}
+	}
+	for _, route := range d.routes {
+		if err = d.handle.RouteDel(route); err != nil {
+			errs = append(errs, fmt.Errorf("failed to delete route: %w", err))
+		}
+	}
+	if err = d.tunnel.Close(); err != nil {
+		errs = append(errs, fmt.Errorf("failed to close tunnel: %w", err))
+	}
+	if d.handle != nil {
+		d.handle.Close()
+		d.handle = nil
+	}
+	if len(errs) == 0 {
+		return nil
+	}
+	return errors.Join(errs...)
+}
+
+func createKernelTun(localAddresses []netip.Addr, mtu int, handler promiscuousModeHandler) (t Tunnel, err error) {
+	if handler != nil {
+		return nil, newError("TODO: support promiscuous mode")
+	}
+
+	var v4, v6 *netip.Addr
+	for _, prefixes := range localAddresses {
+		if v4 == nil && prefixes.Is4() {
+			x := prefixes
+			v4 = &x
+		}
+		if v6 == nil && prefixes.Is6() {
+			x := prefixes
+			v6 = &x
+		}
+	}
+
+	writeSysctlZero := func(path string) error {
+		_, err := os.Stat(path)
+		if os.IsNotExist(err) {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+		return os.WriteFile(path, []byte("0"), 0o644)
+	}
+
+	// system configs.
+	if v4 != nil {
+		if err = writeSysctlZero("/proc/sys/net/ipv4/conf/all/rp_filter"); err != nil {
+			return nil, fmt.Errorf("failed to disable ipv4 rp_filter for all: %w", err)
+		}
+	}
+	if v6 != nil {
+		if err = writeSysctlZero("/proc/sys/net/ipv6/conf/all/disable_ipv6"); err != nil {
+			return nil, fmt.Errorf("failed to enable ipv6: %w", err)
+		}
+		if err = writeSysctlZero("/proc/sys/net/ipv6/conf/all/rp_filter"); err != nil {
+			return nil, fmt.Errorf("failed to disable ipv6 rp_filter for all: %w", err)
+		}
+	}
+
+	n := CalculateInterfaceName("wg")
+	wgt, err := wgtun.CreateTUN(n, mtu)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err != nil {
+			_ = wgt.Close()
+		}
+	}()
+
+	// disable linux rp_filter for tunnel device to avoid packet drop.
+	// the operation require root privilege on container require '--privileged' flag.
+	if v4 != nil {
+		if err = writeSysctlZero("/proc/sys/net/ipv4/conf/" + n + "/rp_filter"); err != nil {
+			return nil, fmt.Errorf("failed to disable ipv4 rp_filter for tunnel: %w", err)
+		}
+	}
+	if v6 != nil {
+		if err = writeSysctlZero("/proc/sys/net/ipv6/conf/" + n + "/rp_filter"); err != nil {
+			return nil, fmt.Errorf("failed to disable ipv6 rp_filter for tunnel: %w", err)
+		}
+	}
+
+	ipv6TableIndex := 1023
+	if v6 != nil {
+		r := &netlink.Route{Table: ipv6TableIndex}
+		for {
+			routeList, fErr := netlink.RouteListFiltered(netlink.FAMILY_V6, r, netlink.RT_FILTER_TABLE)
+			if len(routeList) == 0 || fErr != nil {
+				break
+			}
+			ipv6TableIndex--
+			if ipv6TableIndex < 0 {
+				return nil, fmt.Errorf("failed to find available ipv6 table index")
+			}
+		}
+	}
+
+	out := newDeviceNet(n)
+	out.handle, err = netlink.NewHandle()
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err != nil {
+			_ = out.Close()
+		}
+	}()
+
+	l, err := netlink.LinkByName(n)
+	if err != nil {
+		return nil, err
+	}
+
+	if v4 != nil {
+		addr := netlink.Addr{
+			IPNet: &net.IPNet{
+				IP:   v4.AsSlice(),
+				Mask: net.CIDRMask(v4.BitLen(), v4.BitLen()),
+			},
+		}
+		out.linkAddrs = append(out.linkAddrs, addr)
+	}
+	if v6 != nil {
+		addr := netlink.Addr{
+			IPNet: &net.IPNet{
+				IP:   v6.AsSlice(),
+				Mask: net.CIDRMask(v6.BitLen(), v6.BitLen()),
+			},
+		}
+		out.linkAddrs = append(out.linkAddrs, addr)
+
+		rt := &netlink.Route{
+			LinkIndex: l.Attrs().Index,
+			Dst: &net.IPNet{
+				IP:   net.IPv6zero,
+				Mask: net.CIDRMask(0, 128),
+			},
+			Table: ipv6TableIndex,
+		}
+		out.routes = append(out.routes, rt)
+
+		r := netlink.NewRule()
+		r.Table, r.Family, r.Src = ipv6TableIndex, unix.AF_INET6, addr.IPNet
+		out.rules = append(out.rules, r)
+	}
+
+	for _, addr := range out.linkAddrs {
+		if err = out.handle.AddrAdd(l, &addr); err != nil {
+			return nil, fmt.Errorf("failed to add address %s to %s: %w", addr, n, err)
+		}
+	}
+	if err = out.handle.LinkSetMTU(l, mtu); err != nil {
+		return nil, err
+	}
+	if err = out.handle.LinkSetUp(l); err != nil {
+		return nil, err
+	}
+
+	for _, route := range out.routes {
+		if err = out.handle.RouteAdd(route); err != nil {
+			return nil, fmt.Errorf("failed to add route %s: %w", route, err)
+		}
+	}
+	for _, rule := range out.rules {
+		if err = out.handle.RuleAdd(rule); err != nil {
+			return nil, fmt.Errorf("failed to add rule %s: %w", rule, err)
+		}
+	}
+	out.tun = wgt
+	return out, nil
+}
+
+func KernelTunSupported() bool {
+	// run a superuser permission check to check
+	// if the current user has the sufficient permission
+	// to create a tun device.
+
+	return unix.Geteuid() == 0 // 0 means root
+}

proxy/wireguard/wireguard.go

@@ -1,261 +1,19 @@
-/*
-
-Some of codes are copied from https://github.com/octeep/wireproxy, license below.
-
-Copyright (c) 2022 Wind T.F. Wong <octeep@pm.me>
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-*/
-
 package wireguard
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"net/netip"
 	"strings"
 
-	"github.com/sagernet/wireguard-go/device"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/log"
-	"github.com/xtls/xray-core/common/net"
+	"golang.zx2c4.com/wireguard/device"
-	"github.com/xtls/xray-core/common/protocol"
-	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal"
-	"github.com/xtls/xray-core/common/task"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/dns"
-	"github.com/xtls/xray-core/features/policy"
-	"github.com/xtls/xray-core/transport"
-	"github.com/xtls/xray-core/transport/internet"
 )
 
-// Handler is an outbound connection that silently swallow the entire payload.
+//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-type Handler struct {
-	conf          *DeviceConfig
-	net           *Net
-	bind          *netBindClient
-	policyManager policy.Manager
-	dns           dns.Client
-	// cached configuration
-	ipc       string
-	endpoints []netip.Addr
-}
 
-// New creates a new wireguard handler.
+var wgLogger = &device.Logger{
-func New(ctx context.Context, conf *DeviceConfig) (*Handler, error) {
-	v := core.MustFromContext(ctx)
-
-	endpoints, err := parseEndpoints(conf)
-	if err != nil {
-		return nil, err
-	}
-
-	return &Handler{
-		conf:          conf,
-		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
-		dns:           v.GetFeature(dns.ClientType()).(dns.Client),
-		ipc:           createIPCRequest(conf),
-		endpoints:     endpoints,
-	}, nil
-}
-
-// Process implements OutboundHandler.Dispatch().
-func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound == nil || !outbound.Target.IsValid() {
-		return newError("target not specified")
-	}
-	outbound.Name = "wireguard"
-	inbound := session.InboundFromContext(ctx)
-	if inbound != nil {
-		inbound.SetCanSpliceCopy(3)
-	}
-
-	if h.bind == nil || h.bind.dialer != dialer || h.net == nil {
-		log.Record(&log.GeneralMessage{
-			Severity: log.Severity_Info,
-			Content:  "switching dialer",
-		})
-		// bind := conn.NewStdNetBind() // TODO: conn.Bind wrapper for dialer
-		bind := &netBindClient{
-			dialer:   dialer,
-			workers:  int(h.conf.NumWorkers),
-			dns:      h.dns,
-			reserved: h.conf.Reserved,
-		}
-
-		net, err := h.makeVirtualTun(bind)
-		if err != nil {
-			bind.Close()
-			return newError("failed to create virtual tun interface").Base(err)
-		}
-
-		h.net = net
-		if h.bind != nil {
-			h.bind.Close()
-		}
-		h.bind = bind
-	}
-
-	// Destination of the inner request.
-	destination := outbound.Target
-	command := protocol.RequestCommandTCP
-	if destination.Network == net.Network_UDP {
-		command = protocol.RequestCommandUDP
-	}
-
-	// resolve dns
-	addr := destination.Address
-	if addr.Family().IsDomain() {
-		ips, err := h.dns.LookupIP(addr.Domain(), dns.IPOption{
-			IPv4Enable: h.net.HasV4(),
-			IPv6Enable: h.net.HasV6(),
-		})
-		if err != nil {
-			return newError("failed to lookup DNS").Base(err)
-		} else if len(ips) == 0 {
-			return dns.ErrEmptyResponse
-		}
-		addr = net.IPAddress(ips[0])
-	}
-
-	var newCtx context.Context
-	var newCancel context.CancelFunc
-	if session.TimeoutOnlyFromContext(ctx) {
-		newCtx, newCancel = context.WithCancel(context.Background())
-	}
-
-	p := h.policyManager.ForLevel(0)
-
-	ctx, cancel := context.WithCancel(ctx)
-	timer := signal.CancelAfterInactivity(ctx, func() {
-		cancel()
-		if newCancel != nil {
-			newCancel()
-		}
-	}, p.Timeouts.ConnectionIdle)
-	addrPort := netip.AddrPortFrom(toNetIpAddr(addr), destination.Port.Value())
-
-	var requestFunc func() error
-	var responseFunc func() error
-
-	if command == protocol.RequestCommandTCP {
-		conn, err := h.net.DialContextTCPAddrPort(ctx, addrPort)
-		if err != nil {
-			return newError("failed to create TCP connection").Base(err)
-		}
-		defer conn.Close()
-
-		requestFunc = func() error {
-			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
-			return buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer))
-		}
-		responseFunc = func() error {
-			defer timer.SetTimeout(p.Timeouts.UplinkOnly)
-			return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
-		}
-	} else if command == protocol.RequestCommandUDP {
-		conn, err := h.net.DialUDPAddrPort(netip.AddrPort{}, addrPort)
-		if err != nil {
-			return newError("failed to create UDP connection").Base(err)
-		}
-		defer conn.Close()
-
-		requestFunc = func() error {
-			defer timer.SetTimeout(p.Timeouts.DownlinkOnly)
-			return buf.Copy(link.Reader, buf.NewWriter(conn), buf.UpdateActivity(timer))
-		}
-		responseFunc = func() error {
-			defer timer.SetTimeout(p.Timeouts.UplinkOnly)
-			return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
-		}
-	}
-
-	if newCtx != nil {
-		ctx = newCtx
-	}
-
-	responseDonePost := task.OnSuccess(responseFunc, task.Close(link.Writer))
-	if err := task.Run(ctx, requestFunc, responseDonePost); err != nil {
-		common.Interrupt(link.Reader)
-		common.Interrupt(link.Writer)
-		return newError("connection ends").Base(err)
-	}
-
-	return nil
-}
-
-// serialize the config into an IPC request
-func createIPCRequest(conf *DeviceConfig) string {
-	var request bytes.Buffer
-
-	request.WriteString(fmt.Sprintf("private_key=%s\n", conf.SecretKey))
-
-	for _, peer := range conf.Peers {
-		request.WriteString(fmt.Sprintf("public_key=%s\nendpoint=%s\npersistent_keepalive_interval=%d\npreshared_key=%s\n",
-			peer.PublicKey, peer.Endpoint, peer.KeepAlive, peer.PreSharedKey))
-
-		for _, ip := range peer.AllowedIps {
-			request.WriteString(fmt.Sprintf("allowed_ip=%s\n", ip))
-		}
-	}
-
-	return request.String()[:request.Len()]
-}
-
-// convert endpoint string to netip.Addr
-func parseEndpoints(conf *DeviceConfig) ([]netip.Addr, error) {
-	endpoints := make([]netip.Addr, len(conf.Endpoint))
-	for i, str := range conf.Endpoint {
-		var addr netip.Addr
-		if strings.Contains(str, "/") {
-			prefix, err := netip.ParsePrefix(str)
-			if err != nil {
-				return nil, err
-			}
-			addr = prefix.Addr()
-			if prefix.Bits() != addr.BitLen() {
-				return nil, newError("interface address subnet should be /32 for IPv4 and /128 for IPv6")
-			}
-		} else {
-			var err error
-			addr, err = netip.ParseAddr(str)
-			if err != nil {
-				return nil, err
-			}
-		}
-		endpoints[i] = addr
-	}
-
-	return endpoints, nil
-}
-
-// creates a tun interface on netstack given a configuration
-func (h *Handler) makeVirtualTun(bind *netBindClient) (*Net, error) {
-	tun, tnet, err := CreateNetTUN(h.endpoints, h.dns, int(h.conf.Mtu))
-	if err != nil {
-		return nil, err
-	}
-
-	bind.dnsOption.IPv4Enable = tnet.HasV4()
-	bind.dnsOption.IPv6Enable = tnet.HasV6()
-
-	// dev := device.NewDevice(tun, conn.NewDefaultBind(), nil /* device.NewLogger(device.LogLevelVerbose, "") */)
-	dev := device.NewDevice(tun, bind, &device.Logger{
 	Verbosef: func(format string, args ...any) {
 		log.Record(&log.GeneralMessage{
 			Severity: log.Severity_Debug,
@@ -268,22 +26,86 @@ func (h *Handler) makeVirtualTun(bind *netBindClient) (*Net, error) {
 			Content:  fmt.Sprintf(format, args...),
 		})
 	},
-	}, int(h.conf.NumWorkers))
-	err = dev.IpcSet(h.ipc)
-	if err != nil {
-		return nil, err
-	}
-
-	err = dev.Up()
-	if err != nil {
-		return nil, err
-	}
-
-	return tnet, nil
 }
 
 func init() {
 	common.Must(common.RegisterConfig((*DeviceConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		return New(ctx, config.(*DeviceConfig))
+		deviceConfig := config.(*DeviceConfig)
+		if deviceConfig.IsClient {
+			return New(ctx, deviceConfig)
+		} else {
+			return NewServer(ctx, deviceConfig)
+		}
 	}))
 }
+
+// convert endpoint string to netip.Addr
+func parseEndpoints(conf *DeviceConfig) ([]netip.Addr, bool, bool, error) {
+	var hasIPv4, hasIPv6 bool
+
+	endpoints := make([]netip.Addr, len(conf.Endpoint))
+	for i, str := range conf.Endpoint {
+		var addr netip.Addr
+		if strings.Contains(str, "/") {
+			prefix, err := netip.ParsePrefix(str)
+			if err != nil {
+				return nil, false, false, err
+			}
+			addr = prefix.Addr()
+			if prefix.Bits() != addr.BitLen() {
+				return nil, false, false, newError("interface address subnet should be /32 for IPv4 and /128 for IPv6")
+			}
+		} else {
+			var err error
+			addr, err = netip.ParseAddr(str)
+			if err != nil {
+				return nil, false, false, err
+			}
+		}
+		endpoints[i] = addr
+
+		if addr.Is4() {
+			hasIPv4 = true
+		} else if addr.Is6() {
+			hasIPv6 = true
+		}
+	}
+
+	return endpoints, hasIPv4, hasIPv6, nil
+}
+
+// serialize the config into an IPC request
+func createIPCRequest(conf *DeviceConfig) string {
+	var request strings.Builder
+
+	request.WriteString(fmt.Sprintf("private_key=%s\n", conf.SecretKey))
+
+	if !conf.IsClient {
+		// placeholder, we'll handle actual port listening on Xray
+		request.WriteString("listen_port=1337\n")
+	}
+
+	for _, peer := range conf.Peers {
+		if peer.PublicKey != "" {
+			request.WriteString(fmt.Sprintf("public_key=%s\n", peer.PublicKey))
+		}
+
+		if peer.PreSharedKey != "" {
+			request.WriteString(fmt.Sprintf("preshared_key=%s\n", peer.PreSharedKey))
+		}
+
+		if peer.Endpoint != "" {
+			request.WriteString(fmt.Sprintf("endpoint=%s\n", peer.Endpoint))
+		}
+
+		for _, ip := range peer.AllowedIps {
+			request.WriteString(fmt.Sprintf("allowed_ip=%s\n", ip))
+		}
+
+		if peer.KeepAlive != 0 {
+			request.WriteString(fmt.Sprintf("persistent_keepalive_interval=%d\n", peer.KeepAlive))
+		}
+	}
+
+	return request.String()[:request.Len()]
+}

transport/global/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/global/config.proto
 

transport/internet/config.go

@@ -12,6 +12,21 @@ var (
 	globalTransportSettings           []*TransportConfig
 )
 
+var strategy = [][]byte{
+	//              name        strategy,   prefer, fallback
+	{0, 0, 0}, //   AsIs        none,       /,      /
+	{1, 0, 0}, //   UseIP       use,        both,   none
+	{1, 4, 0}, //   UseIPv4     use,        4,      none
+	{1, 6, 0}, //   UseIPv6     use,        6,      none
+	{1, 4, 6}, //   UseIPv4v6   use,        4,      6
+	{1, 6, 4}, //   UseIPv6v4   use,        6,      4
+	{2, 0, 0}, //   ForceIP     force,      both,   none
+	{2, 4, 0}, //   ForceIPv4   force,      4,      none
+	{2, 6, 0}, //   ForceIPv6   force,      6,      none
+	{2, 4, 6}, //   ForceIPv4v6 force,      4,      6
+	{2, 6, 4}, //   ForceIPv6v4 force,      6,      4
+}
+
 const unknownProtocol = "unknown"
 
 func transportProtocolToString(protocol TransportProtocol) string {
@@ -122,3 +137,31 @@ func (c *ProxyConfig) HasTag() bool {
 func (m SocketConfig_TProxyMode) IsEnabled() bool {
 	return m != SocketConfig_Off
 }
+
+func (s DomainStrategy) hasStrategy() bool {
+	return strategy[s][0] != 0
+}
+
+func (s DomainStrategy) forceIP() bool {
+	return strategy[s][0] == 2
+}
+
+func (s DomainStrategy) preferIP4() bool {
+	return strategy[s][1] == 4 || strategy[s][1] == 0
+}
+
+func (s DomainStrategy) preferIP6() bool {
+	return strategy[s][1] == 6 || strategy[s][1] == 0
+}
+
+func (s DomainStrategy) hasFallback() bool {
+	return strategy[s][2] != 0
+}
+
+func (s DomainStrategy) fallbackIP4() bool {
+	return strategy[s][2] == 4
+}
+
+func (s DomainStrategy) fallbackIP6() bool {
+	return strategy[s][2] == 6
+}

transport/internet/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.31.0
-// 	protoc        v4.24.1
+// 	protoc        v4.23.1
 // source: transport/internet/config.proto
 
 package internet
@@ -86,6 +86,13 @@ const (
 	DomainStrategy_USE_IP     DomainStrategy = 1
 	DomainStrategy_USE_IP4    DomainStrategy = 2
 	DomainStrategy_USE_IP6    DomainStrategy = 3
+	DomainStrategy_USE_IP46   DomainStrategy = 4
+	DomainStrategy_USE_IP64   DomainStrategy = 5
+	DomainStrategy_FORCE_IP   DomainStrategy = 6
+	DomainStrategy_FORCE_IP4  DomainStrategy = 7
+	DomainStrategy_FORCE_IP6  DomainStrategy = 8
+	DomainStrategy_FORCE_IP46 DomainStrategy = 9
+	DomainStrategy_FORCE_IP64 DomainStrategy = 10
 )
 
 // Enum value maps for DomainStrategy.
@@ -95,12 +102,26 @@ var (
 		1:  "USE_IP",
 		2:  "USE_IP4",
 		3:  "USE_IP6",
+		4:  "USE_IP46",
+		5:  "USE_IP64",
+		6:  "FORCE_IP",
+		7:  "FORCE_IP4",
+		8:  "FORCE_IP6",
+		9:  "FORCE_IP46",
+		10: "FORCE_IP64",
 	}
 	DomainStrategy_value = map[string]int32{
 		"AS_IS":      0,
 		"USE_IP":     1,
 		"USE_IP4":    2,
 		"USE_IP6":    3,
+		"USE_IP46":   4,
+		"USE_IP64":   5,
+		"FORCE_IP":   6,
+		"FORCE_IP4":  7,
+		"FORCE_IP6":  8,
+		"FORCE_IP46": 9,
+		"FORCE_IP64": 10,
 	}
 )
 
@@ -710,18 +731,24 @@ var file_transport_internet_config_proto_rawDesc = []byte{
 	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,
+	0x10, 0x05, 0x2a, 0xa9, 0x01, 0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
-	0x74, 0x65, 0x67, 0x79, 0x12, 0x09, 0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00, 0x12,
+	0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x09, 0x0a, 0x05, 0x41, 0x53, 0x5f, 0x49, 0x53, 0x10, 0x00,
-	0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55,
+	0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07,
-	0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f,
+	0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45,
-	0x49, 0x50, 0x36, 0x10, 0x03, 0x42, 0x67, 0x0a, 0x1b, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61,
+	0x5f, 0x49, 0x50, 0x36, 0x10, 0x03, 0x12, 0x0c, 0x0a, 0x08, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50,
-	0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65,
+	0x34, 0x36, 0x10, 0x04, 0x12, 0x0c, 0x0a, 0x08, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x36, 0x34,
-	0x72, 0x6e, 0x65, 0x74, 0x50, 0x01, 0x5a, 0x2c, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x10, 0x05, 0x12, 0x0c, 0x0a, 0x08, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x06,
-	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
+	0x12, 0x0d, 0x0a, 0x09, 0x46, 0x4f, 0x52, 0x43, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x07, 0x12,
-	0x65, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65,
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-	0x72, 0x6e, 0x65, 0x74, 0xaa, 0x02, 0x17, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x54, 0x72, 0x61, 0x6e,
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-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x70, 0x6f, 0x72, 0x74, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0xaa, 0x02, 0x17,
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 }
 
 var (

transport/internet/config.proto

@@ -22,6 +22,13 @@ enum DomainStrategy {
   USE_IP = 1;
   USE_IP4 = 2;
   USE_IP6 = 3;
+  USE_IP46 = 4;
+  USE_IP64 = 5;
+  FORCE_IP = 6;
+  FORCE_IP4 = 7;
+  FORCE_IP6 = 8;
+  FORCE_IP46 = 9;
+  FORCE_IP64 = 10;
 }
 
 message TransportConfig {

transport/internet/dialer.go

@@ -78,37 +78,27 @@ func lookupIP(domain string, strategy DomainStrategy, localAddr net.Address) ([]
 		return nil, nil
 	}
 
-	option := dns.IPOption{
+	ips, err := dnsClient.LookupIP(domain, dns.IPOption{
-		IPv4Enable: true,
+		IPv4Enable: (localAddr == nil || localAddr.Family().IsIPv4()) && strategy.preferIP4(),
-		IPv6Enable: true,
+		IPv6Enable: (localAddr == nil || localAddr.Family().IsIPv6()) && strategy.preferIP6(),
-		FakeEnable: false,
+	})
+	{ // Resolve fallback
+		if (len(ips) == 0 || err != nil) && strategy.hasFallback() && localAddr == nil {
+			ips, err = dnsClient.LookupIP(domain, dns.IPOption{
+				IPv4Enable: strategy.fallbackIP4(),
+				IPv6Enable: strategy.fallbackIP6(),
+			})
+		}
 	}
 
-	switch {
+	return ips, err
-	case strategy == DomainStrategy_USE_IP4 || (localAddr != nil && localAddr.Family().IsIPv4()):
-		option = dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}
-	case strategy == DomainStrategy_USE_IP6 || (localAddr != nil && localAddr.Family().IsIPv6()):
-		option = dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
-		}
-	case strategy == DomainStrategy_AS_IS:
-		return nil, nil
-	}
-
-	return dnsClient.LookupIP(domain, option)
 }
 
 func canLookupIP(ctx context.Context, dst net.Destination, sockopt *SocketConfig) bool {
 	if dst.Address.Family().IsIP() || dnsClient == nil {
 		return false
 	}
-	return sockopt.DomainStrategy != DomainStrategy_AS_IS
+	return sockopt.DomainStrategy.hasStrategy()
 }
 
 func redirect(ctx context.Context, dst net.Destination, obt string) net.Conn {

transport/internet/domainsocket/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/domainsocket/config.proto
 

transport/internet/grpc/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/grpc/config.proto
 

transport/internet/grpc/encoding/stream.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/grpc/encoding/stream.proto
 

transport/internet/headers/dns/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/dns/config.proto
 

transport/internet/headers/http/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/http/config.proto
 

transport/internet/headers/noop/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/noop/config.proto
 

transport/internet/headers/srtp/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/srtp/config.proto
 

transport/internet/headers/tls/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/tls/config.proto
 

transport/internet/headers/utp/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/utp/config.proto
 

transport/internet/headers/wechat/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/wechat/config.proto
 

transport/internet/headers/wireguard/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/headers/wireguard/config.proto
 

transport/internet/http/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/http/config.proto
 

transport/internet/kcp/config.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.31.0
 // 	protoc        v4.23.1
 // source: transport/internet/kcp/config.proto