Prepare v2ray client/server transport

Makefile

@@ -33,6 +33,15 @@ lint:
 lint_install:
 	go install -v github.com/golangci/golangci-lint/cmd/golangci-lint@latest
 
+proto:
+	@go run ./cmd/internal/protogen
+	@gofumpt -l -w .
+	@gofumpt -l -w .
+
+proto_install:
+	go install -v google.golang.org/protobuf/cmd/protoc-gen-go@latest
+	go install -v google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
+
 snapshot:
 	goreleaser release --rm-dist --snapshot
 	mkdir dist/release

adapter/v2ray.go

@@ -0,0 +1,15 @@
+package adapter
+
+import (
+	"context"
+	"net"
+)
+
+type V2RayServerTransport interface {
+	Serve(listener net.Listener) error
+	Close() error
+}
+
+type V2RayClientTransport interface {
+	DialContext(ctx context.Context) (net.Conn, error)
+}

cmd/internal/protogen/main.go

@@ -0,0 +1,253 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/build"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// envFile returns the name of the Go environment configuration file.
+// Copy from https://github.com/golang/go/blob/c4f2a9788a7be04daf931ac54382fbe2cb754938/src/cmd/go/internal/cfg/cfg.go#L150-L166
+func envFile() (string, error) {
+	if file := os.Getenv("GOENV"); file != "" {
+		if file == "off" {
+			return "", fmt.Errorf("GOENV=off")
+		}
+		return file, nil
+	}
+	dir, err := os.UserConfigDir()
+	if err != nil {
+		return "", err
+	}
+	if dir == "" {
+		return "", fmt.Errorf("missing user-config dir")
+	}
+	return filepath.Join(dir, "go", "env"), nil
+}
+
+// GetRuntimeEnv returns the value of runtime environment variable,
+// that is set by running following command: `go env -w key=value`.
+func GetRuntimeEnv(key string) (string, error) {
+	file, err := envFile()
+	if err != nil {
+		return "", err
+	}
+	if file == "" {
+		return "", fmt.Errorf("missing runtime env file")
+	}
+	var data []byte
+	var runtimeEnv string
+	data, readErr := os.ReadFile(file)
+	if readErr != nil {
+		return "", readErr
+	}
+	envStrings := strings.Split(string(data), "\n")
+	for _, envItem := range envStrings {
+		envItem = strings.TrimSuffix(envItem, "\r")
+		envKeyValue := strings.Split(envItem, "=")
+		if strings.EqualFold(strings.TrimSpace(envKeyValue[0]), key) {
+			runtimeEnv = strings.TrimSpace(envKeyValue[1])
+		}
+	}
+	return runtimeEnv, nil
+}
+
+// GetGOBIN returns GOBIN environment variable as a string. It will NOT be empty.
+func GetGOBIN() string {
+	// The one set by user explicitly by `export GOBIN=/path` or `env GOBIN=/path command`
+	GOBIN := os.Getenv("GOBIN")
+	if GOBIN == "" {
+		var err error
+		// The one set by user by running `go env -w GOBIN=/path`
+		GOBIN, err = GetRuntimeEnv("GOBIN")
+		if err != nil {
+			// The default one that Golang uses
+			return filepath.Join(build.Default.GOPATH, "bin")
+		}
+		if GOBIN == "" {
+			return filepath.Join(build.Default.GOPATH, "bin")
+		}
+		return GOBIN
+	}
+	return GOBIN
+}
+
+func getInstalledProtocVersion(protocPath string) (string, error) {
+	cmd := exec.Command(protocPath, "--version")
+	cmd.Env = append(cmd.Env, os.Environ()...)
+	output, cmdErr := cmd.CombinedOutput()
+	if cmdErr != nil {
+		return "", cmdErr
+	}
+	versionRegexp := regexp.MustCompile(`protoc\s*(\d+\.\d+\.\d+)`)
+	matched := versionRegexp.FindStringSubmatch(string(output))
+	return matched[1], nil
+}
+
+func parseVersion(s string, width int) int64 {
+	strList := strings.Split(s, ".")
+	format := fmt.Sprintf("%%s%%0%ds", width)
+	v := ""
+	for _, value := range strList {
+		v = fmt.Sprintf(format, v, value)
+	}
+	var result int64
+	var err error
+	if result, err = strconv.ParseInt(v, 10, 64); err != nil {
+		return 0
+	}
+	return result
+}
+
+func needToUpdate(targetedVersion, installedVersion string) bool {
+	vt := parseVersion(targetedVersion, 4)
+	vi := parseVersion(installedVersion, 4)
+	return vt > vi
+}
+
+func main() {
+	pwd, err := os.Getwd()
+	if err != nil {
+		fmt.Println("Can not get current working directory.")
+		os.Exit(1)
+	}
+
+	GOBIN := GetGOBIN()
+	binPath := os.Getenv("PATH")
+	pathSlice := []string{pwd, GOBIN, binPath}
+	binPath = strings.Join(pathSlice, string(os.PathListSeparator))
+	os.Setenv("PATH", binPath)
+
+	suffix := ""
+	if runtime.GOOS == "windows" {
+		suffix = ".exe"
+	}
+
+	protoc := "protoc"
+
+	if linkPath, err := os.Readlink(protoc); err == nil {
+		protoc = linkPath
+	}
+
+	protoFilesMap := make(map[string][]string)
+	walkErr := filepath.Walk("./", func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			fmt.Println(err)
+			return err
+		}
+
+		if info.IsDir() {
+			return nil
+		}
+
+		dir := filepath.Dir(path)
+		filename := filepath.Base(path)
+		if strings.HasSuffix(filename, ".proto") &&
+			filename != "typed_message.proto" &&
+			filename != "descriptor.proto" {
+			protoFilesMap[dir] = append(protoFilesMap[dir], path)
+		}
+
+		return nil
+	})
+	if walkErr != nil {
+		fmt.Println(walkErr)
+		os.Exit(1)
+	}
+
+	for _, files := range protoFilesMap {
+		for _, relProtoFile := range files {
+			args := []string{
+				"-I", ".",
+				"--go_out", pwd,
+				"--go_opt", "paths=source_relative",
+				"--go-grpc_out", pwd,
+				"--go-grpc_opt", "paths=source_relative",
+				"--plugin", "protoc-gen-go=" + filepath.Join(GOBIN, "protoc-gen-go"+suffix),
+				"--plugin", "protoc-gen-go-grpc=" + filepath.Join(GOBIN, "protoc-gen-go-grpc"+suffix),
+			}
+			args = append(args, relProtoFile)
+			cmd := exec.Command(protoc, args...)
+			cmd.Env = append(cmd.Env, os.Environ()...)
+			output, cmdErr := cmd.CombinedOutput()
+			if len(output) > 0 {
+				fmt.Println(string(output))
+			}
+			if cmdErr != nil {
+				fmt.Println(cmdErr)
+				os.Exit(1)
+			}
+		}
+	}
+
+	normalizeWalkErr := filepath.Walk("./", func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			fmt.Println(err)
+			return err
+		}
+
+		if info.IsDir() {
+			return nil
+		}
+
+		filename := filepath.Base(path)
+		if strings.HasSuffix(filename, ".pb.go") &&
+			path != "config.pb.go" {
+			if err := NormalizeGeneratedProtoFile(path); err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+		}
+
+		return nil
+	})
+	if normalizeWalkErr != nil {
+		fmt.Println(normalizeWalkErr)
+		os.Exit(1)
+	}
+}
+
+func NormalizeGeneratedProtoFile(path string) error {
+	fd, err := os.OpenFile(path, os.O_RDWR, 0o644)
+	if err != nil {
+		return err
+	}
+
+	_, err = fd.Seek(0, io.SeekStart)
+	if err != nil {
+		return err
+	}
+	out := bytes.NewBuffer(nil)
+	scanner := bufio.NewScanner(fd)
+	valid := false
+	for scanner.Scan() {
+		if !valid && !strings.HasPrefix(scanner.Text(), "package ") {
+			continue
+		}
+		valid = true
+		out.Write(scanner.Bytes())
+		out.Write([]byte("\n"))
+	}
+	_, err = fd.Seek(0, io.SeekStart)
+	if err != nil {
+		return err
+	}
+	err = fd.Truncate(0)
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(fd, bytes.NewReader(out.Bytes()))
+	if err != nil {
+		return err
+	}
+	return nil
+}

common/dialer/tls.go

@@ -126,13 +126,17 @@ func (d *TLSDialer) DialContext(ctx context.Context, network string, destination
 	if err != nil {
 		return nil, err
 	}
-	tlsConn := tls.Client(conn, d.config)
-	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
-	defer cancel()
-	err = tlsConn.HandshakeContext(ctx)
-	return tlsConn, err
+	return TLSClient(ctx, conn, d.config)
 }
 
 func (d *TLSDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
 	return nil, os.ErrInvalid
 }
+
+func TLSClient(ctx context.Context, conn net.Conn, tlsConfig *tls.Config) (*tls.Conn, error) {
+	tlsConn := tls.Client(conn, tlsConfig)
+	ctx, cancel := context.WithTimeout(ctx, C.TCPTimeout)
+	defer cancel()
+	err := tlsConn.HandshakeContext(ctx)
+	return tlsConn, err
+}

constant/v2ray.go

@@ -0,0 +1,5 @@
+package constant
+
+const (
+	V2RayTransportTypeGRPC = "grpc"
+)

experimental/clashapi/server.go

@@ -17,6 +17,7 @@ import (
 	"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	F "github.com/sagernet/sing/common/format"
 	N "github.com/sagernet/sing/common/network"
@@ -25,7 +26,6 @@ import (
 	"github.com/go-chi/cors"
 	"github.com/go-chi/render"
 	"github.com/gorilla/websocket"
-	"github.com/sagernet/sing/common"
 )
 
 var _ adapter.ClashServer = (*Server)(nil)

go.mod

@@ -5,7 +5,7 @@ go 1.18
 require (
 	berty.tech/go-libtor v1.0.385
 	github.com/cretz/bine v0.2.0
-	github.com/database64128/tfo-go v1.1.1
+	github.com/database64128/tfo-go v1.1.2
 	github.com/dustin/go-humanize v1.0.0
 	github.com/fsnotify/fsnotify v1.5.4
 	github.com/go-chi/chi/v5 v5.0.7
@@ -32,6 +32,8 @@ require (
 	golang.org/x/net v0.0.0-20220812174116-3211cb980234
 	golang.org/x/sys v0.0.0-20220818161305-2296e01440c6
 	golang.zx2c4.com/wireguard v0.0.0-20220703234212-c31a7b1ab478
+	google.golang.org/grpc v1.48.0
+	google.golang.org/protobuf v1.28.1
 	gvisor.dev/gvisor v0.0.0-20220812001733-b5c0f23893fb
 )
 
@@ -40,6 +42,7 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
 	github.com/golang/mock v1.6.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/btree v1.0.1 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.1.0 // indirect
@@ -64,6 +67,7 @@ require (
 	golang.org/x/tools v0.1.10 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
+	google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	lukechampine.com/blake3 v1.1.7 // indirect

go.sum

@@ -1,24 +1,46 @@
 berty.tech/go-libtor v1.0.385 h1:RWK94C3hZj6Z2GdvePpHJLnWYobFr3bY/OdUJ5aoEXw=
 berty.tech/go-libtor v1.0.385/go.mod h1:9swOOQVb+kmvuAlsgWUK/4c52pm69AdbJsxLzk+fJEw=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
+github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211001041855-01bcc9b48dfe/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/cretz/bine v0.1.0/go.mod h1:6PF6fWAvYtwjRGkAuDEJeWNOv3a2hUouSP/yRYXmvHw=
 github.com/cretz/bine v0.2.0 h1:8GiDRGlTgz+o8H9DSnsl+5MeBK4HsExxgl6WgzOCuZo=
 github.com/cretz/bine v0.2.0/go.mod h1:WU4o9QR9wWp8AVKtTM1XD5vUHkEqnf2vVSo6dBqbetI=
-github.com/database64128/tfo-go v1.1.1 h1:jcaCQBkEZZxV1t2wfOwt41WJKzgcNtLV7nGOm+hmZ3w=
-github.com/database64128/tfo-go v1.1.1/go.mod h1:b1wrRNZr7NKZhWQ8LSTvqo1r2ppLdYXZLIUDCPOgJrI=
+github.com/database64128/tfo-go v1.1.2 h1:GwxtJp09BdUTVEoeT421t231eNZoGOCRkklbl4WI1kU=
+github.com/database64128/tfo-go v1.1.2/go.mod h1:jgrSUPyOvTGQyn6irCOpk7L2W/q/0VLZZcovQiMi+bI=
 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=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
+github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.mod h1:KJwIaB5Mv44NWtYuAOFCVOjcI94vtpEz2JU/D2v6IjE=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI=
 github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-chi/chi/v5 v5.0.7 h1:rDTPXLDHGATaeHvVlLcR4Qe0zftYethFucbjVQ1PxU8=
 github.com/go-chi/chi/v5 v5.0.7/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
@@ -29,23 +51,38 @@ github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 h1:p104kn46Q8Wd
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/gofrs/uuid v4.2.0+incompatible h1:yyYWMnhkhrKwwr8gAOcOCYxOOscHgDS9yZgBrnJfGa0=
 github.com/gofrs/uuid v4.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
 github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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@@ -88,6 +125,8 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -129,6 +168,7 @@ github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695AP
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
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@@ -146,19 +186,30 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
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@@ -166,10 +217,15 @@ golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -183,6 +239,7 @@ golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -199,14 +256,19 @@ golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuX
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@@ -221,13 +283,37 @@ golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL
 golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard v0.0.0-20220703234212-c31a7b1ab478 h1:vDy//hdR+GnROE3OdYbQKt9rdtNdHkDtONvpRwmls/0=
 golang.zx2c4.com/wireguard v0.0.0-20220703234212-c31a7b1ab478/go.mod h1:bVQfyl2sCM/QIIGHpWbFGfHPuDvqnCNkT6MQLTCjO/U=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f h1:YORWxaStkWBnWgELOHTmDrqNlFXuVGEbhwbB5iK94bQ=
+google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f/go.mod h1:ob2IJxKrgPT52GcgX759i1sleT07tiKowYBGbczaW48=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.48.0 h1:rQOsyJ/8+ufEDJd/Gdsz7HG220Mh9HAhFHRGnIjda0w=
+google.golang.org/grpc v1.48.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+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 v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -235,6 +321,7 @@ gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMy
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -246,5 +333,7 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gvisor.dev/gvisor v0.0.0-20220812001733-b5c0f23893fb h1:Z7S1dQX1RX+Tq55/Jq5kJQnPBdxA19ZmhgCmFjyK+yA=
 gvisor.dev/gvisor v0.0.0-20220812001733-b5c0f23893fb/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 lukechampine.com/blake3 v1.1.7 h1:GgRMhmdsuK8+ii6UZFDL8Nb+VyMwadAgcJyfYHxG6n0=
 lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=

inbound/default.go

@@ -113,6 +113,22 @@ func (a *myInboundAdapter) Start() error {
 	return nil
 }
 
+func (a *myInboundAdapter) ListenTCP() (*net.TCPListener, error) {
+	var err error
+	bindAddr := M.SocksaddrFrom(netip.Addr(a.listenOptions.Listen), a.listenOptions.ListenPort)
+	var tcpListener *net.TCPListener
+	if !a.listenOptions.TCPFastOpen {
+		tcpListener, err = net.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
+	} else {
+		tcpListener, err = tfo.ListenTCP(M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.TCPAddr())
+	}
+	if err == nil {
+		a.logger.Info("tcp server started at ", tcpListener.Addr())
+	}
+	a.tcpListener = tcpListener
+	return tcpListener, err
+}
+
 func (a *myInboundAdapter) Close() error {
 	var err error
 	if a.clearSystemProxy != nil {
@@ -156,24 +172,31 @@ func (a *myInboundAdapter) loopTCPIn() {
 		if err != nil {
 			return
 		}
-		go func() {
-			ctx := log.ContextWithNewID(a.ctx)
-			var metadata adapter.InboundContext
-			metadata.Inbound = a.tag
-			metadata.InboundType = a.protocol
-			metadata.SniffEnabled = a.listenOptions.SniffEnabled
-			metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
-			metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
-			metadata.Network = N.NetworkTCP
-			metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
-			metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr())
-			a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
-			hErr := a.connHandler.NewConnection(ctx, conn, metadata)
-			if hErr != nil {
-				conn.Close()
-				a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
-			}
-		}()
+		go a.injectTCP(conn)
+	}
+}
+
+func (a *myInboundAdapter) createMetadata(conn net.Conn) adapter.InboundContext {
+	var metadata adapter.InboundContext
+	metadata.Inbound = a.tag
+	metadata.InboundType = a.protocol
+	metadata.SniffEnabled = a.listenOptions.SniffEnabled
+	metadata.SniffOverrideDestination = a.listenOptions.SniffOverrideDestination
+	metadata.DomainStrategy = dns.DomainStrategy(a.listenOptions.DomainStrategy)
+	metadata.Network = N.NetworkTCP
+	metadata.Source = M.SocksaddrFromNet(conn.RemoteAddr())
+	metadata.OriginDestination = M.SocksaddrFromNet(conn.LocalAddr())
+	return metadata
+}
+
+func (a *myInboundAdapter) injectTCP(conn net.Conn) {
+	ctx := log.ContextWithNewID(a.ctx)
+	metadata := a.createMetadata(conn)
+	a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
+	hErr := a.connHandler.NewConnection(ctx, conn, metadata)
+	if hErr != nil {
+		conn.Close()
+		a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
 	}
 }
 

inbound/vmess.go

@@ -10,6 +10,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/v2ray"
 	"github.com/sagernet/sing-vmess"
 	"github.com/sagernet/sing/common"
 	"github.com/sagernet/sing/common/auth"
@@ -22,9 +23,11 @@ var _ adapter.Inbound = (*VMess)(nil)
 
 type VMess struct {
 	myInboundAdapter
+	ctx       context.Context
 	service   *vmess.Service[int]
 	users     []option.VMessUser
 	tlsConfig *TLSConfig
+	transport adapter.V2RayServerTransport
 }
 
 func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.VMessInboundOptions) (*VMess, error) {
@@ -38,9 +41,11 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 			tag:           tag,
 			listenOptions: options.ListenOptions,
 		},
+		ctx:   ctx,
 		users: options.Users,
 	}
 	service := vmess.NewService[int](adapter.NewUpstreamContextHandler(inbound.newConnection, inbound.newPacketConnection, inbound))
+	inbound.service = service
 	err := service.UpdateUsers(common.MapIndexed(options.Users, func(index int, it option.VMessUser) int {
 		return index
 	}), common.Map(options.Users, func(it option.VMessUser) string {
@@ -52,28 +57,43 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 		return nil, err
 	}
 	if options.TLS != nil {
-		tlsConfig, err := NewTLSConfig(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		inbound.tlsConfig, err = NewTLSConfig(ctx, logger, common.PtrValueOrDefault(options.TLS))
+		if err != nil {
+			return nil, err
+		}
+	}
+	if options.Transport != nil {
+		inbound.transport, err = v2ray.NewServerTransport(ctx, common.PtrValueOrDefault(options.Transport), inbound.tlsConfig.Config(), adapter.NewUpstreamHandler(adapter.InboundContext{}, inbound.newTransportConnection, nil, nil))
 		if err != nil {
 			return nil, err
 		}
-		inbound.tlsConfig = tlsConfig
 	}
-	inbound.service = service
 	inbound.connHandler = inbound
 	return inbound, nil
 }
 
 func (h *VMess) Start() error {
-	if h.tlsConfig != nil {
-		err := h.tlsConfig.Start()
-		if err != nil {
-			return E.Cause(err, "create TLS config")
-		}
-	}
-	return common.Start(
+	err := common.Start(
 		h.service,
-		&h.myInboundAdapter,
+		h.tlsConfig,
 	)
+	if err != nil {
+		return err
+	}
+	if h.transport == nil {
+		return h.myInboundAdapter.Start()
+	}
+	tcpListener, err := h.myInboundAdapter.ListenTCP()
+	if err != nil {
+		return err
+	}
+	go func() {
+		sErr := h.transport.Serve(tcpListener)
+		if sErr != nil && !E.IsClosed(sErr) {
+			h.logger.Error("transport serve error: ", sErr)
+		}
+	}()
+	return nil
 }
 
 func (h *VMess) Close() error {
@@ -81,6 +101,7 @@ func (h *VMess) Close() error {
 		h.service,
 		&h.myInboundAdapter,
 		common.PtrOrNil(h.tlsConfig),
+		h.transport,
 	)
 }
 
@@ -91,6 +112,11 @@ func (h *VMess) NewConnection(ctx context.Context, conn net.Conn, metadata adapt
 	return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
 }
 
+func (h *VMess) newTransportConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
+	metadata = h.createMetadata(conn)
+	return h.service.NewConnection(adapter.WithContext(log.ContextWithNewID(ctx), &metadata), conn, adapter.UpstreamMetadata(metadata))
+}
+
 func (h *VMess) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
 	userIndex, loaded := auth.UserFromContext[int](ctx)
 	if !loaded {

option/v2ray_transport.go

@@ -0,0 +1,89 @@
+package option
+
+import (
+	"github.com/sagernet/sing-box/common/json"
+	C "github.com/sagernet/sing-box/constant"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type _V2RayInboundTransportOptions struct {
+	Type        string           `json:"type,omitempty"`
+	GRPCOptions V2RayGRPCOptions `json:"-"`
+}
+
+type V2RayInboundTransportOptions _V2RayOutboundTransportOptions
+
+func (o V2RayInboundTransportOptions) MarshalJSON() ([]byte, error) {
+	var v any
+	switch o.Type {
+	case "":
+		return nil, nil
+	case C.V2RayTransportTypeGRPC:
+		v = o.GRPCOptions
+	default:
+		return nil, E.New("unknown transport type: " + o.Type)
+	}
+	return MarshallObjects((_V2RayOutboundTransportOptions)(o), v)
+}
+
+func (o *V2RayInboundTransportOptions) UnmarshalJSON(bytes []byte) error {
+	err := json.Unmarshal(bytes, (*_V2RayOutboundTransportOptions)(o))
+	if err != nil {
+		return err
+	}
+	var v any
+	switch o.Type {
+	case C.V2RayTransportTypeGRPC:
+		v = &o.GRPCOptions
+	default:
+		return E.New("unknown transport type: " + o.Type)
+	}
+	err = UnmarshallExcluded(bytes, (*_V2RayOutboundTransportOptions)(o), v)
+	if err != nil {
+		return E.Cause(err, "vmess transport options")
+	}
+	return nil
+}
+
+type _V2RayOutboundTransportOptions struct {
+	Type        string           `json:"type,omitempty"`
+	GRPCOptions V2RayGRPCOptions `json:"-"`
+}
+
+type V2RayOutboundTransportOptions _V2RayOutboundTransportOptions
+
+func (o V2RayOutboundTransportOptions) MarshalJSON() ([]byte, error) {
+	var v any
+	switch o.Type {
+	case "":
+		return nil, nil
+	case C.V2RayTransportTypeGRPC:
+		v = o.GRPCOptions
+	default:
+		return nil, E.New("unknown transport type: " + o.Type)
+	}
+	return MarshallObjects((_V2RayOutboundTransportOptions)(o), v)
+}
+
+func (o *V2RayOutboundTransportOptions) UnmarshalJSON(bytes []byte) error {
+	err := json.Unmarshal(bytes, (*_V2RayOutboundTransportOptions)(o))
+	if err != nil {
+		return err
+	}
+	var v any
+	switch o.Type {
+	case C.V2RayTransportTypeGRPC:
+		v = &o.GRPCOptions
+	default:
+		return E.New("unknown transport type: " + o.Type)
+	}
+	err = UnmarshallExcluded(bytes, (*_V2RayOutboundTransportOptions)(o), v)
+	if err != nil {
+		return E.Cause(err, "vmess transport options")
+	}
+	return nil
+}
+
+type V2RayGRPCOptions struct {
+	ServiceName string `json:"service_name,omitempty"`
+}

option/vmess.go

@@ -2,8 +2,9 @@ package option
 
 type VMessInboundOptions struct {
 	ListenOptions
-	Users []VMessUser        `json:"users,omitempty"`
-	TLS   *InboundTLSOptions `json:"tls,omitempty"`
+	Users     []VMessUser                   `json:"users,omitempty"`
+	TLS       *InboundTLSOptions            `json:"tls,omitempty"`
+	Transport *V2RayInboundTransportOptions `json:"transport,omitempty"`
 }
 
 type VMessUser struct {
@@ -15,12 +16,13 @@ type VMessUser struct {
 type VMessOutboundOptions struct {
 	OutboundDialerOptions
 	ServerOptions
-	UUID                string              `json:"uuid"`
-	Security            string              `json:"security"`
-	AlterId             int                 `json:"alter_id,omitempty"`
-	GlobalPadding       bool                `json:"global_padding,omitempty"`
-	AuthenticatedLength bool                `json:"authenticated_length,omitempty"`
-	Network             NetworkList         `json:"network,omitempty"`
-	TLSOptions          *OutboundTLSOptions `json:"tls,omitempty"`
-	MultiplexOptions    *MultiplexOptions   `json:"multiplex,omitempty"`
+	UUID                string                         `json:"uuid"`
+	Security            string                         `json:"security"`
+	AlterId             int                            `json:"alter_id,omitempty"`
+	GlobalPadding       bool                           `json:"global_padding,omitempty"`
+	AuthenticatedLength bool                           `json:"authenticated_length,omitempty"`
+	Network             NetworkList                    `json:"network,omitempty"`
+	TLS                 *OutboundTLSOptions            `json:"tls,omitempty"`
+	Multiplex           *MultiplexOptions              `json:"multiplex,omitempty"`
+	Transport           *V2RayOutboundTransportOptions `json:"transport,omitempty"`
 }

outbound/vmess.go

@@ -2,6 +2,7 @@ package outbound
 
 import (
 	"context"
+	"crypto/tls"
 	"net"
 
 	"github.com/sagernet/sing-box/adapter"
@@ -10,6 +11,7 @@ import (
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/log"
 	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/v2ray"
 	"github.com/sagernet/sing-vmess"
 	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
@@ -25,6 +27,8 @@ type VMess struct {
 	client          *vmess.Client
 	serverAddr      M.Socksaddr
 	multiplexDialer N.Dialer
+	tlsConfig       *tls.Config
+	transport       adapter.V2RayClientTransport
 }
 
 func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.VMessOutboundOptions) (*VMess, error) {
@@ -47,20 +51,33 @@ func NewVMess(ctx context.Context, router adapter.Router, logger log.ContextLogg
 			logger:   logger,
 			tag:      tag,
 		},
+		dialer:     dialer.NewOutbound(router, options.OutboundDialerOptions),
 		client:     client,
 		serverAddr: options.ServerOptions.Build(),
 	}
-	outbound.dialer, err = dialer.NewTLS(dialer.NewOutbound(router, options.OutboundDialerOptions), options.Server, common.PtrValueOrDefault(options.TLSOptions))
-	if err != nil {
-		return nil, err
+	if options.TLS != nil {
+		outbound.tlsConfig, err = dialer.TLSConfig(options.Server, common.PtrValueOrDefault(options.TLS))
+		if err != nil {
+			return nil, err
+		}
 	}
-	outbound.multiplexDialer, err = mux.NewClientWithOptions(ctx, (*vmessDialer)(outbound), common.PtrValueOrDefault(options.MultiplexOptions))
+	if options.Transport != nil {
+		outbound.transport, err = v2ray.NewClientTransport(ctx, outbound.dialer, outbound.serverAddr, common.PtrValueOrDefault(options.Transport), outbound.tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+	}
+	outbound.multiplexDialer, err = mux.NewClientWithOptions(ctx, (*vmessDialer)(outbound), common.PtrValueOrDefault(options.Multiplex))
 	if err != nil {
 		return nil, err
 	}
 	return outbound, nil
 }
 
+func (h *VMess) Close() error {
+	return common.Close(h.transport)
+}
+
 func (h *VMess) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
 	if h.multiplexDialer == nil {
 		switch N.NetworkName(network) {
@@ -105,19 +122,24 @@ func (h *vmessDialer) DialContext(ctx context.Context, network string, destinati
 	ctx, metadata := adapter.AppendContext(ctx)
 	metadata.Outbound = h.tag
 	metadata.Destination = destination
+	var conn net.Conn
+	var err error
+	if h.transport != nil {
+		conn, err = h.transport.DialContext(ctx)
+	} else {
+		conn, err = h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
+		if err == nil && h.tlsConfig != nil {
+			conn, err = dialer.TLSClient(ctx, conn, h.tlsConfig)
+		}
+	}
+	if err != nil {
+		return nil, err
+	}
 	switch N.NetworkName(network) {
 	case N.NetworkTCP:
-		outConn, err := h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err != nil {
-			return nil, err
-		}
-		return h.client.DialEarlyConn(outConn, destination), nil
+		return h.client.DialEarlyConn(conn, destination), nil
 	case N.NetworkUDP:
-		outConn, err := h.dialer.DialContext(ctx, N.NetworkTCP, h.serverAddr)
-		if err != nil {
-			return nil, err
-		}
-		return h.client.DialEarlyPacketConn(outConn, destination), nil
+		return h.client.DialEarlyPacketConn(conn, destination), nil
 	default:
 		return nil, E.Extend(N.ErrUnknownNetwork, network)
 	}

test/go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/docker/docker v20.10.17+incompatible
 	github.com/docker/go-connections v0.4.0
 	github.com/gofrs/uuid v4.2.0+incompatible
-	github.com/sagernet/sing v0.0.0-20220822031040-57fe2e623c82
+	github.com/sagernet/sing v0.0.0-20220822075357-8b9965b73533
 	github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6
 	github.com/spyzhov/ajson v0.7.1
 	github.com/stretchr/testify v1.8.0
@@ -22,7 +22,7 @@ require (
 	github.com/Microsoft/go-winio v0.5.1 // indirect
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/cretz/bine v0.2.0 // indirect
-	github.com/database64128/tfo-go v1.1.1 // indirect
+	github.com/database64128/tfo-go v1.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/docker/distribution v2.8.1+incompatible // indirect
 	github.com/docker/go-units v0.4.0 // indirect
@@ -33,6 +33,7 @@ require (
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/mock v1.6.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/btree v1.0.1 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/hashicorp/yamux v0.1.1 // indirect
@@ -58,7 +59,7 @@ require (
 	github.com/sagernet/netlink v0.0.0-20220820041223-3cd8365d17ac // indirect
 	github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb // indirect
 	github.com/sagernet/sing-dns v0.0.0-20220822023312-3e086b06d666 // indirect
-	github.com/sagernet/sing-tun v0.0.0-20220821033717-8b6630a3b006 // indirect
+	github.com/sagernet/sing-tun v0.0.0-20220822073626-d5efb431220d // indirect
 	github.com/sagernet/sing-vmess v0.0.0-20220811135656-4f3f07acf9c4 // indirect
 	github.com/sagernet/smux v0.0.0-20220812084127-e2d085ee3939 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
@@ -76,6 +77,9 @@ require (
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
 	golang.zx2c4.com/wireguard v0.0.0-20220703234212-c31a7b1ab478 // indirect
+	google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f // indirect
+	google.golang.org/grpc v1.48.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

test/go.sum

@@ -1,19 +1,33 @@
 berty.tech/go-libtor v1.0.385 h1:RWK94C3hZj6Z2GdvePpHJLnWYobFr3bY/OdUJ5aoEXw=
 berty.tech/go-libtor v1.0.385/go.mod h1:9swOOQVb+kmvuAlsgWUK/4c52pm69AdbJsxLzk+fJEw=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/Microsoft/go-winio v0.5.1 h1:aPJp2QD7OOrhO5tQXqQoGSJc+DjDtWTGLOmNyAm6FgY=
 github.com/Microsoft/go-winio v0.5.1/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
 github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
 github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
+github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211001041855-01bcc9b48dfe/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cretz/bine v0.1.0/go.mod h1:6PF6fWAvYtwjRGkAuDEJeWNOv3a2hUouSP/yRYXmvHw=
 github.com/cretz/bine v0.2.0 h1:8GiDRGlTgz+o8H9DSnsl+5MeBK4HsExxgl6WgzOCuZo=
 github.com/cretz/bine v0.2.0/go.mod h1:WU4o9QR9wWp8AVKtTM1XD5vUHkEqnf2vVSo6dBqbetI=
-github.com/database64128/tfo-go v1.1.1 h1:jcaCQBkEZZxV1t2wfOwt41WJKzgcNtLV7nGOm+hmZ3w=
-github.com/database64128/tfo-go v1.1.1/go.mod h1:b1wrRNZr7NKZhWQ8LSTvqo1r2ppLdYXZLIUDCPOgJrI=
+github.com/database64128/tfo-go v1.1.2 h1:GwxtJp09BdUTVEoeT421t231eNZoGOCRkklbl4WI1kU=
+github.com/database64128/tfo-go v1.1.2/go.mod h1:jgrSUPyOvTGQyn6irCOpk7L2W/q/0VLZZcovQiMi+bI=
 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=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -25,10 +39,18 @@ github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKoh
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
+github.com/envoyproxy/go-control-plane v0.10.2-0.20220325020618-49ff273808a1/go.mod h1:KJwIaB5Mv44NWtYuAOFCVOjcI94vtpEz2JU/D2v6IjE=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI=
 github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-chi/chi/v5 v5.0.7 h1:rDTPXLDHGATaeHvVlLcR4Qe0zftYethFucbjVQ1PxU8=
 github.com/go-chi/chi/v5 v5.0.7/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
@@ -41,25 +63,38 @@ github.com/gofrs/uuid v4.2.0+incompatible h1:yyYWMnhkhrKwwr8gAOcOCYxOOscHgDS9yZg
 github.com/gofrs/uuid v4.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
 github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
 github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
+github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
 github.com/google/btree v1.0.1/go.mod h1:xXMiIv4Fb/0kKde4SpL7qlzvu5cMJDRkFDxJfI9uaxA=
+github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
 github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/yamux v0.1.1 h1:yrQxtgseBDrq9Y652vSRDvsKCJKOUD+GzTS4Y0Y8pvE=
 github.com/hashicorp/yamux v0.1.1/go.mod h1:CtWFDAQgb7dxtzFs4tWbplKIe2jSi3+5vKbgIO0SLnQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
@@ -111,6 +146,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e h1:5CFRo8FJbCuf5s/eTBdZpmMbn8Fe2eSMLNAYfKanA34=
 github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e/go.mod h1:qbt0dWObotCfcjAJJ9AxtFPNSDUfZF+6dCpgKEOBn/g=
 github.com/sagernet/certmagic v0.0.0-20220819042630-4a57f8b6853a h1:SE3Xn4GOQ+kxbgGa2Xp0H2CCsx1o2pVTt0f+hmfuHH4=
@@ -123,14 +160,14 @@ github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTY
 github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
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@@ -155,6 +192,7 @@ github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1
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@@ -172,21 +210,32 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
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@@ -194,11 +243,16 @@ golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -232,15 +286,20 @@ golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuX
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@@ -258,13 +317,37 @@ golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL
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+google.golang.org/grpc v1.48.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+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 v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -272,6 +355,7 @@ gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMy
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -286,5 +370,7 @@ gotest.tools/v3 v3.3.0 h1:MfDY1b1/0xN1CyMlQDac0ziEy9zJQd9CXBRRDHw2jJo=
 gotest.tools/v3 v3.3.0/go.mod h1:Mcr9QNxkg0uMvy/YElmo4SpXgJKWgQvYrT7Kw5RzJ1A=
 gvisor.dev/gvisor v0.0.0-20220812001733-b5c0f23893fb h1:Z7S1dQX1RX+Tq55/Jq5kJQnPBdxA19ZmhgCmFjyK+yA=
 gvisor.dev/gvisor v0.0.0-20220812001733-b5c0f23893fb/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 lukechampine.com/blake3 v1.1.7 h1:GgRMhmdsuK8+ii6UZFDL8Nb+VyMwadAgcJyfYHxG6n0=
 lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=

test/mux_test.go

@@ -144,7 +144,7 @@ func testVMessMux(t *testing.T, protocol string) {
 					},
 					Security: "auto",
 					UUID:     user.String(),
-					MultiplexOptions: &option.MultiplexOptions{
+					Multiplex: &option.MultiplexOptions{
 						Enabled:  true,
 						Protocol: protocol,
 					},

test/vmess_transport_test.go

@@ -0,0 +1,102 @@
+package main
+
+import (
+	"net/netip"
+	"testing"
+
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/option"
+
+	"github.com/gofrs/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+func TestVMessGRPCSelf(t *testing.T) {
+	user, err := uuid.DefaultGenerator.NewV4()
+	require.NoError(t, err)
+	_, certPem, keyPem := createSelfSignedCertificate(t, "example.org")
+	startInstance(t, option.Options{
+		Log: &option.LogOptions{
+			Level:  "error",
+			Output: "stderr",
+		},
+		Inbounds: []option.Inbound{
+			{
+				Type: C.TypeMixed,
+				Tag:  "mixed-in",
+				MixedOptions: option.HTTPMixedInboundOptions{
+					ListenOptions: option.ListenOptions{
+						Listen:     option.ListenAddress(netip.IPv4Unspecified()),
+						ListenPort: clientPort,
+					},
+				},
+			},
+			{
+				Type: C.TypeVMess,
+				VMessOptions: option.VMessInboundOptions{
+					ListenOptions: option.ListenOptions{
+						Listen:     option.ListenAddress(netip.IPv4Unspecified()),
+						ListenPort: serverPort,
+					},
+					Users: []option.VMessUser{
+						{
+							Name: "sekai",
+							UUID: user.String(),
+						},
+					},
+					TLS: &option.InboundTLSOptions{
+						Enabled:         true,
+						ServerName:      "example.org",
+						CertificatePath: certPem,
+						KeyPath:         keyPem,
+					},
+					Transport: &option.V2RayInboundTransportOptions{
+						Type: C.V2RayTransportTypeGRPC,
+						GRPCOptions: option.V2RayGRPCOptions{
+							ServiceName: "TunService",
+						},
+					},
+				},
+			},
+		},
+		Outbounds: []option.Outbound{
+			{
+				Type: C.TypeDirect,
+			},
+			{
+				Type: C.TypeVMess,
+				Tag:  "vmess-out",
+				VMessOptions: option.VMessOutboundOptions{
+					ServerOptions: option.ServerOptions{
+						Server:     "127.0.0.1",
+						ServerPort: serverPort,
+					},
+					UUID:     user.String(),
+					Security: "zero",
+					TLS: &option.OutboundTLSOptions{
+						Enabled:         true,
+						ServerName:      "example.org",
+						CertificatePath: certPem,
+					},
+					Transport: &option.V2RayOutboundTransportOptions{
+						Type: C.V2RayTransportTypeGRPC,
+						GRPCOptions: option.V2RayGRPCOptions{
+							ServiceName: "TunService",
+						},
+					},
+				},
+			},
+		},
+		Route: &option.RouteOptions{
+			Rules: []option.Rule{
+				{
+					DefaultOptions: option.DefaultRule{
+						Inbound:  []string{"mixed-in"},
+						Outbound: "vmess-out",
+					},
+				},
+			},
+		},
+	})
+	testSuit(t, clientPort, testPort)
+}

transport/v2ray/grpc.go

@@ -0,0 +1,21 @@
+//go:build with_grpc
+
+package v2ray
+
+import (
+	"context"
+	"crypto/tls"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/transport/v2raygrpc"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func NewGRPCServer(ctx context.Context, serviceName string, tlsConfig *tls.Config, handler N.TCPConnectionHandler) (adapter.V2RayServerTransport, error) {
+	return v2raygrpc.NewServer(ctx, serviceName, tlsConfig, handler), nil
+}
+
+func NewGRPCClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, serviceName string, tlsConfig *tls.Config) (adapter.V2RayClientTransport, error) {
+	return v2raygrpc.NewClient(ctx, dialer, serverAddr, serviceName, tlsConfig), nil
+}

transport/v2ray/grpc_stub.go

@@ -0,0 +1,23 @@
+//go:build !with_grpc
+
+package v2ray
+
+import (
+	"context"
+	"crypto/tls"
+
+	"github.com/sagernet/sing-box/adapter"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+var errGRPCNotIncluded = E.New("gRPC is not included in this build, rebuild with -tags with_grpc")
+
+func NewGRPCServer(ctx context.Context, serviceName string, tlsConfig *tls.Config, handler N.TCPConnectionHandler) (adapter.V2RayServerTransport, error) {
+	return nil, errGRPCNotIncluded
+}
+
+func NewGRPCClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, serviceName string, tlsConfig *tls.Config) (adapter.V2RayClientTransport, error) {
+	return nil, errGRPCNotIncluded
+}

transport/v2ray/transport.go

@@ -0,0 +1,37 @@
+package v2ray
+
+import (
+	"context"
+	"crypto/tls"
+
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+func NewServerTransport(ctx context.Context, options option.V2RayInboundTransportOptions, tlsConfig *tls.Config, handler N.TCPConnectionHandler) (adapter.V2RayServerTransport, error) {
+	if options.Type == "" {
+		return nil, nil
+	}
+	switch options.Type {
+	case C.V2RayTransportTypeGRPC:
+		return NewGRPCServer(ctx, options.GRPCOptions.ServiceName, tlsConfig, handler)
+	default:
+		return nil, E.New("unknown transport type: " + options.Type)
+	}
+}
+
+func NewClientTransport(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayOutboundTransportOptions, tlsConfig *tls.Config) (adapter.V2RayClientTransport, error) {
+	if options.Type == "" {
+		return nil, nil
+	}
+	switch options.Type {
+	case C.V2RayTransportTypeGRPC:
+		return NewGRPCClient(ctx, dialer, serverAddr, options.GRPCOptions.ServiceName, tlsConfig)
+	default:
+		return nil, E.New("unknown transport type: " + options.Type)
+	}
+}

transport/v2raygrpc/client.go

@@ -0,0 +1,99 @@
+package v2raygrpc
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing/common"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/backoff"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var _ adapter.V2RayClientTransport = (*Client)(nil)
+
+type Client struct {
+	ctx         context.Context
+	dialer      N.Dialer
+	serverAddr  string
+	serviceName string
+	dialOptions []grpc.DialOption
+	conn        *grpc.ClientConn
+	connAccess  sync.Mutex
+}
+
+func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, serviceName string, tlsConfig *tls.Config) adapter.V2RayClientTransport {
+	var dialOptions []grpc.DialOption
+	if tlsConfig != nil {
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)))
+	} else {
+		dialOptions = append(dialOptions, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+	dialOptions = append(dialOptions, grpc.WithConnectParams(grpc.ConnectParams{
+		Backoff: backoff.Config{
+			BaseDelay:  500 * time.Millisecond,
+			Multiplier: 1.5,
+			Jitter:     0.2,
+			MaxDelay:   19 * time.Second,
+		},
+		MinConnectTimeout: 5 * time.Second,
+	}))
+	dialOptions = append(dialOptions, grpc.WithContextDialer(func(ctx context.Context, server string) (net.Conn, error) {
+		return dialer.DialContext(ctx, N.NetworkTCP, M.ParseSocksaddr(server))
+	}))
+	dialOptions = append(dialOptions, grpc.WithReturnConnectionError())
+	return &Client{
+		ctx:         ctx,
+		dialer:      dialer,
+		serverAddr:  serverAddr.String(),
+		serviceName: serviceName,
+		dialOptions: dialOptions,
+	}
+}
+
+func (c *Client) Close() error {
+	return common.Close(c.conn)
+}
+
+func (c *Client) connect() (*grpc.ClientConn, error) {
+	conn := c.conn
+	if conn != nil && conn.GetState() != connectivity.Shutdown {
+		return conn, nil
+	}
+	c.connAccess.Lock()
+	defer c.connAccess.Unlock()
+	conn = c.conn
+	if conn != nil && conn.GetState() != connectivity.Shutdown {
+		return conn, nil
+	}
+	conn, err := grpc.DialContext(c.ctx, c.serverAddr, c.dialOptions...)
+	if err != nil {
+		return nil, err
+	}
+	c.conn = conn
+	return conn, nil
+}
+
+func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
+	clientConn, err := c.connect()
+	if err != nil {
+		return nil, err
+	}
+	client := NewGunServiceClient(clientConn).(GunServiceCustomNameClient)
+	ctx, cancel := context.WithCancel(ctx)
+	stream, err := client.TunCustomName(ctx, c.serviceName)
+	if err != nil {
+		cancel()
+		return nil, err
+	}
+	return NewGRPCConn(stream, cancel), nil
+}

transport/v2raygrpc/conn.go

@@ -0,0 +1,106 @@
+package v2raygrpc
+
+import (
+	"context"
+	"io"
+	"net"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/sagernet/sing/common/rw"
+)
+
+var _ net.Conn = (*GRPCConn)(nil)
+
+type GRPCConn struct {
+	GunService
+	cancel context.CancelFunc
+	cache  []byte
+}
+
+func NewGRPCConn(service GunService, cancel context.CancelFunc) *GRPCConn {
+	if client, isClient := service.(GunService_TunClient); isClient {
+		service = &clientConnWrapper{client}
+	}
+	return &GRPCConn{
+		GunService: service,
+		cancel:     cancel,
+	}
+}
+
+func (c *GRPCConn) Read(b []byte) (n int, err error) {
+	if len(c.cache) > 0 {
+		n = copy(b, c.cache)
+		c.cache = c.cache[n:]
+		return
+	}
+	hunk, err := c.Recv()
+	err = wrapError(err)
+	if err != nil {
+		return
+	}
+	n = copy(b, hunk.Data)
+	if n < len(hunk.Data) {
+		c.cache = hunk.Data[n:]
+	}
+	return
+}
+
+func (c *GRPCConn) Write(b []byte) (n int, err error) {
+	err = wrapError(c.Send(&Hunk{Data: b}))
+	if err != nil {
+		return
+	}
+	return len(b), nil
+}
+
+func (c *GRPCConn) Close() error {
+	c.cancel()
+	return nil
+}
+
+func (c *GRPCConn) LocalAddr() net.Addr {
+	return nil
+}
+
+func (c *GRPCConn) RemoteAddr() net.Addr {
+	return nil
+}
+
+func (c *GRPCConn) SetDeadline(t time.Time) error {
+	return os.ErrInvalid
+}
+
+func (c *GRPCConn) SetReadDeadline(t time.Time) error {
+	return os.ErrInvalid
+}
+
+func (c *GRPCConn) SetWriteDeadline(t time.Time) error {
+	return os.ErrInvalid
+}
+
+func (c *GRPCConn) Upstream() any {
+	return c.GunService
+}
+
+var _ rw.WriteCloser = (*clientConnWrapper)(nil)
+
+type clientConnWrapper struct {
+	GunService_TunClient
+}
+
+func (c *clientConnWrapper) CloseWrite() error {
+	return c.CloseSend()
+}
+
+func wrapError(err error) error {
+	// grpc uses stupid internal error types
+	if err == nil {
+		return nil
+	}
+	if strings.Contains(err.Error(), "EOF") {
+		return io.EOF
+	}
+	return err
+}

transport/v2raygrpc/custom_name.go

@@ -0,0 +1,51 @@
+package v2raygrpc
+
+import (
+	"context"
+
+	"google.golang.org/grpc"
+)
+
+type GunService interface {
+	Context() context.Context
+	Send(*Hunk) error
+	Recv() (*Hunk, error)
+}
+
+func ServerDesc(name string) grpc.ServiceDesc {
+	return grpc.ServiceDesc{
+		ServiceName: name,
+		HandlerType: (*GunServiceServer)(nil),
+		Methods:     []grpc.MethodDesc{},
+		Streams: []grpc.StreamDesc{
+			{
+				StreamName:    "Tun",
+				Handler:       _GunService_Tun_Handler,
+				ServerStreams: true,
+				ClientStreams: true,
+			},
+		},
+		Metadata: "gun.proto",
+	}
+}
+
+func (c *gunServiceClient) TunCustomName(ctx context.Context, name string, opts ...grpc.CallOption) (GunService_TunClient, error) {
+	stream, err := c.cc.NewStream(ctx, &ServerDesc(name).Streams[0], "/"+name+"/Tun", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &gunServiceTunClient{stream}
+	return x, nil
+}
+
+var _ GunServiceCustomNameClient = (*gunServiceClient)(nil)
+
+type GunServiceCustomNameClient interface {
+	TunCustomName(ctx context.Context, name string, opts ...grpc.CallOption) (GunService_TunClient, error)
+	Tun(ctx context.Context, opts ...grpc.CallOption) (GunService_TunClient, error)
+}
+
+func RegisterGunServiceCustomNameServer(s *grpc.Server, srv GunServiceServer, name string) {
+	desc := ServerDesc(name)
+	s.RegisterService(&desc, srv)
+}

transport/v2raygrpc/server.go

@@ -0,0 +1,53 @@
+package v2raygrpc
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+
+	"github.com/sagernet/sing-box/adapter"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
+)
+
+var _ adapter.V2RayServerTransport = (*Server)(nil)
+
+type Server struct {
+	ctx     context.Context
+	handler N.TCPConnectionHandler
+	server  *grpc.Server
+}
+
+func NewServer(ctx context.Context, serviceName string, tlsConfig *tls.Config, handler N.TCPConnectionHandler) *Server {
+	var serverOptions []grpc.ServerOption
+	if tlsConfig != nil {
+		tlsConfig.NextProtos = []string{"h2"}
+		serverOptions = append(serverOptions, grpc.Creds(credentials.NewTLS(tlsConfig)))
+	}
+	server := &Server{ctx, handler, grpc.NewServer(serverOptions...)}
+	RegisterGunServiceCustomNameServer(server.server, server, serviceName)
+	return server
+}
+
+func (s *Server) Tun(server GunService_TunServer) error {
+	ctx, cancel := context.WithCancel(s.ctx)
+	conn := NewGRPCConn(server, cancel)
+	go s.handler.NewConnection(ctx, conn, M.Metadata{})
+	<-ctx.Done()
+	return nil
+}
+
+func (s *Server) mustEmbedUnimplementedGunServiceServer() {
+}
+
+func (s *Server) Serve(listener net.Listener) error {
+	return s.server.Serve(listener)
+}
+
+func (s *Server) Close() error {
+	s.server.Stop()
+	return nil
+}

transport/v2raygrpc/stream.pb.go

@@ -0,0 +1,150 @@
+package v2raygrpc
+
+import (
+	reflect "reflect"
+	sync "sync"
+
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Hunk struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *Hunk) Reset() {
+	*x = Hunk{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_transport_v2raygrpc_stream_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Hunk) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Hunk) ProtoMessage() {}
+
+func (x *Hunk) ProtoReflect() protoreflect.Message {
+	mi := &file_transport_v2raygrpc_stream_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Hunk.ProtoReflect.Descriptor instead.
+func (*Hunk) Descriptor() ([]byte, []int) {
+	return file_transport_v2raygrpc_stream_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Hunk) GetData() []byte {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+var File_transport_v2raygrpc_stream_proto protoreflect.FileDescriptor
+
+var file_transport_v2raygrpc_stream_proto_rawDesc = []byte{
+	0x0a, 0x20, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x76, 0x32, 0x72, 0x61,
+	0x79, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x2e, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x12, 0x13, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x76, 0x32,
+	0x72, 0x61, 0x79, 0x67, 0x72, 0x70, 0x63, 0x22, 0x1a, 0x0a, 0x04, 0x48, 0x75, 0x6e, 0x6b, 0x12,
+	0x12, 0x0a, 0x04, 0x64, 0x61, 0x74, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x64,
+	0x61, 0x74, 0x61, 0x32, 0x4d, 0x0a, 0x0a, 0x47, 0x75, 0x6e, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63,
+	0x65, 0x12, 0x3f, 0x0a, 0x03, 0x54, 0x75, 0x6e, 0x12, 0x19, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73,
+	0x70, 0x6f, 0x72, 0x74, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x48,
+	0x75, 0x6e, 0x6b, 0x1a, 0x19, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e,
+	0x76, 0x32, 0x72, 0x61, 0x79, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x48, 0x75, 0x6e, 0x6b, 0x28, 0x01,
+	0x30, 0x01, 0x42, 0x32, 0x5a, 0x30, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
+	0x2f, 0x73, 0x61, 0x67, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2f, 0x73, 0x69, 0x6e, 0x67, 0x2d, 0x62,
+	0x6f, 0x78, 0x2f, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2f, 0x76, 0x32, 0x72,
+	0x61, 0x79, 0x67, 0x72, 0x70, 0x63, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_transport_v2raygrpc_stream_proto_rawDescOnce sync.Once
+	file_transport_v2raygrpc_stream_proto_rawDescData = file_transport_v2raygrpc_stream_proto_rawDesc
+)
+
+func file_transport_v2raygrpc_stream_proto_rawDescGZIP() []byte {
+	file_transport_v2raygrpc_stream_proto_rawDescOnce.Do(func() {
+		file_transport_v2raygrpc_stream_proto_rawDescData = protoimpl.X.CompressGZIP(file_transport_v2raygrpc_stream_proto_rawDescData)
+	})
+	return file_transport_v2raygrpc_stream_proto_rawDescData
+}
+
+var (
+	file_transport_v2raygrpc_stream_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+	file_transport_v2raygrpc_stream_proto_goTypes  = []interface{}{
+		(*Hunk)(nil), // 0: transport.v2raygrpc.Hunk
+	}
+)
+
+var file_transport_v2raygrpc_stream_proto_depIdxs = []int32{
+	0, // 0: transport.v2raygrpc.GunService.Tun:input_type -> transport.v2raygrpc.Hunk
+	0, // 1: transport.v2raygrpc.GunService.Tun:output_type -> transport.v2raygrpc.Hunk
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_transport_v2raygrpc_stream_proto_init() }
+func file_transport_v2raygrpc_stream_proto_init() {
+	if File_transport_v2raygrpc_stream_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_transport_v2raygrpc_stream_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Hunk); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_transport_v2raygrpc_stream_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_transport_v2raygrpc_stream_proto_goTypes,
+		DependencyIndexes: file_transport_v2raygrpc_stream_proto_depIdxs,
+		MessageInfos:      file_transport_v2raygrpc_stream_proto_msgTypes,
+	}.Build()
+	File_transport_v2raygrpc_stream_proto = out.File
+	file_transport_v2raygrpc_stream_proto_rawDesc = nil
+	file_transport_v2raygrpc_stream_proto_goTypes = nil
+	file_transport_v2raygrpc_stream_proto_depIdxs = nil
+}

transport/v2raygrpc/stream.proto

@@ -0,0 +1,12 @@
+syntax = "proto3";
+
+package transport.v2raygrpc;
+option go_package = "github.com/sagernet/sing-box/transport/v2raygrpc";
+
+message Hunk {
+  bytes data = 1;
+}
+
+service GunService {
+  rpc Tun (stream Hunk) returns (stream Hunk);
+}

transport/v2raygrpc/stream_grpc.pb.go

@@ -0,0 +1,131 @@
+package v2raygrpc
+
+import (
+	context "context"
+
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// GunServiceClient is the client API for GunService service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type GunServiceClient interface {
+	Tun(ctx context.Context, opts ...grpc.CallOption) (GunService_TunClient, error)
+}
+
+type gunServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewGunServiceClient(cc grpc.ClientConnInterface) GunServiceClient {
+	return &gunServiceClient{cc}
+}
+
+func (c *gunServiceClient) Tun(ctx context.Context, opts ...grpc.CallOption) (GunService_TunClient, error) {
+	stream, err := c.cc.NewStream(ctx, &GunService_ServiceDesc.Streams[0], "/transport.v2raygrpc.GunService/Tun", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &gunServiceTunClient{stream}
+	return x, nil
+}
+
+type GunService_TunClient interface {
+	Send(*Hunk) error
+	Recv() (*Hunk, error)
+	grpc.ClientStream
+}
+
+type gunServiceTunClient struct {
+	grpc.ClientStream
+}
+
+func (x *gunServiceTunClient) Send(m *Hunk) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *gunServiceTunClient) Recv() (*Hunk, error) {
+	m := new(Hunk)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// GunServiceServer is the server API for GunService service.
+// All implementations must embed UnimplementedGunServiceServer
+// for forward compatibility
+type GunServiceServer interface {
+	Tun(GunService_TunServer) error
+	mustEmbedUnimplementedGunServiceServer()
+}
+
+// UnimplementedGunServiceServer must be embedded to have forward compatible implementations.
+type UnimplementedGunServiceServer struct{}
+
+func (UnimplementedGunServiceServer) Tun(GunService_TunServer) error {
+	return status.Errorf(codes.Unimplemented, "method Tun not implemented")
+}
+func (UnimplementedGunServiceServer) mustEmbedUnimplementedGunServiceServer() {}
+
+// UnsafeGunServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to GunServiceServer will
+// result in compilation errors.
+type UnsafeGunServiceServer interface {
+	mustEmbedUnimplementedGunServiceServer()
+}
+
+func RegisterGunServiceServer(s grpc.ServiceRegistrar, srv GunServiceServer) {
+	s.RegisterService(&GunService_ServiceDesc, srv)
+}
+
+func _GunService_Tun_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(GunServiceServer).Tun(&gunServiceTunServer{stream})
+}
+
+type GunService_TunServer interface {
+	Send(*Hunk) error
+	Recv() (*Hunk, error)
+	grpc.ServerStream
+}
+
+type gunServiceTunServer struct {
+	grpc.ServerStream
+}
+
+func (x *gunServiceTunServer) Send(m *Hunk) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *gunServiceTunServer) Recv() (*Hunk, error) {
+	m := new(Hunk)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// GunService_ServiceDesc is the grpc.ServiceDesc for GunService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var GunService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "transport.v2raygrpc.GunService",
+	HandlerType: (*GunServiceServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Tun",
+			Handler:       _GunService_Tun_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "transport/v2raygrpc/stream.proto",
+}