v1.0.0

proxy/vless/outbound/config.go

@@ -0,0 +1,3 @@
+// +build !confonly
+
+package outbound

proxy/vless/outbound/config.pb.go

@@ -0,0 +1,163 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
+// source: proxy/vless/outbound/config.proto
+
+package outbound
+
+import (
+	proto "github.com/golang/protobuf/proto"
+	protocol "github.com/xtls/xray-core/v1/common/protocol"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type Config struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Vnext []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=vnext,proto3" json:"vnext,omitempty"`
+}
+
+func (x *Config) Reset() {
+	*x = Config{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proxy_vless_outbound_config_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Config) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Config) ProtoMessage() {}
+
+func (x *Config) ProtoReflect() protoreflect.Message {
+	mi := &file_proxy_vless_outbound_config_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Config.ProtoReflect.Descriptor instead.
+func (*Config) Descriptor() ([]byte, []int) {
+	return file_proxy_vless_outbound_config_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Config) GetVnext() []*protocol.ServerEndpoint {
+	if x != nil {
+		return x.Vnext
+	}
+	return nil
+}
+
+var File_proxy_vless_outbound_config_proto protoreflect.FileDescriptor
+
+var file_proxy_vless_outbound_config_proto_rawDesc = []byte{
+	0x0a, 0x21, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x6f, 0x75,
+	0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x12, 0x19, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e,
+	0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x1a, 0x21,
+	0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x2f,
+	0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x5f, 0x73, 0x70, 0x65, 0x63, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x22, 0x44, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3a, 0x0a, 0x05, 0x76,
+	0x6e, 0x65, 0x78, 0x74, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61,
+	0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f,
+	0x6c, 0x2e, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
+	0x52, 0x05, 0x76, 0x6e, 0x65, 0x78, 0x74, 0x42, 0x70, 0x0a, 0x1d, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
+	0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e,
+	0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x31, 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, 0x76, 0x31, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76,
+	0x6c, 0x65, 0x73, 0x73, 0x2f, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0xaa, 0x02, 0x19,
+	0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73, 0x73,
+	0x2e, 0x4f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
+}
+
+var (
+	file_proxy_vless_outbound_config_proto_rawDescOnce sync.Once
+	file_proxy_vless_outbound_config_proto_rawDescData = file_proxy_vless_outbound_config_proto_rawDesc
+)
+
+func file_proxy_vless_outbound_config_proto_rawDescGZIP() []byte {
+	file_proxy_vless_outbound_config_proto_rawDescOnce.Do(func() {
+		file_proxy_vless_outbound_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_proxy_vless_outbound_config_proto_rawDescData)
+	})
+	return file_proxy_vless_outbound_config_proto_rawDescData
+}
+
+var file_proxy_vless_outbound_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_proxy_vless_outbound_config_proto_goTypes = []interface{}{
+	(*Config)(nil),                  // 0: xray.proxy.vless.outbound.Config
+	(*protocol.ServerEndpoint)(nil), // 1: xray.common.protocol.ServerEndpoint
+}
+var file_proxy_vless_outbound_config_proto_depIdxs = []int32{
+	1, // 0: xray.proxy.vless.outbound.Config.vnext:type_name -> xray.common.protocol.ServerEndpoint
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_proxy_vless_outbound_config_proto_init() }
+func file_proxy_vless_outbound_config_proto_init() {
+	if File_proxy_vless_outbound_config_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proxy_vless_outbound_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Config); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_proxy_vless_outbound_config_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_proxy_vless_outbound_config_proto_goTypes,
+		DependencyIndexes: file_proxy_vless_outbound_config_proto_depIdxs,
+		MessageInfos:      file_proxy_vless_outbound_config_proto_msgTypes,
+	}.Build()
+	File_proxy_vless_outbound_config_proto = out.File
+	file_proxy_vless_outbound_config_proto_rawDesc = nil
+	file_proxy_vless_outbound_config_proto_goTypes = nil
+	file_proxy_vless_outbound_config_proto_depIdxs = nil
+}

proxy/vless/outbound/config.proto

@@ -0,0 +1,13 @@
+syntax = "proto3";
+
+package xray.proxy.vless.outbound;
+option csharp_namespace = "Xray.Proxy.Vless.Outbound";
+option go_package = "github.com/xtls/xray-core/v1/proxy/vless/outbound";
+option java_package = "com.xray.proxy.vless.outbound";
+option java_multiple_files = true;
+
+import "common/protocol/server_spec.proto";
+
+message Config {
+  repeated xray.common.protocol.ServerEndpoint vnext = 1;
+}

proxy/vless/outbound/errors.generated.go

@@ -0,0 +1,9 @@
+package outbound
+
+import "github.com/xtls/xray-core/v1/common/errors"
+
+type errPathObjHolder struct{}
+
+func newError(values ...interface{}) *errors.Error {
+	return errors.New(values...).WithPathObj(errPathObjHolder{})
+}

proxy/vless/outbound/outbound.go

@@ -0,0 +1,240 @@
+// +build !confonly
+
+package outbound
+
+//go:generate go run github.com/xtls/xray-core/v1/common/errors/errorgen
+
+import (
+	"context"
+	"syscall"
+	"time"
+
+	"github.com/xtls/xray-core/v1/common"
+	"github.com/xtls/xray-core/v1/common/buf"
+	"github.com/xtls/xray-core/v1/common/net"
+	"github.com/xtls/xray-core/v1/common/platform"
+	"github.com/xtls/xray-core/v1/common/protocol"
+	"github.com/xtls/xray-core/v1/common/retry"
+	"github.com/xtls/xray-core/v1/common/session"
+	"github.com/xtls/xray-core/v1/common/signal"
+	"github.com/xtls/xray-core/v1/common/task"
+	core "github.com/xtls/xray-core/v1/core"
+	"github.com/xtls/xray-core/v1/features/policy"
+	"github.com/xtls/xray-core/v1/features/stats"
+	"github.com/xtls/xray-core/v1/proxy/vless"
+	"github.com/xtls/xray-core/v1/proxy/vless/encoding"
+	"github.com/xtls/xray-core/v1/transport"
+	"github.com/xtls/xray-core/v1/transport/internet"
+	"github.com/xtls/xray-core/v1/transport/internet/xtls"
+)
+
+var (
+	xtls_show = false
+)
+
+func init() {
+	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
+		return New(ctx, config.(*Config))
+	}))
+
+	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
+
+	xtlsShow := platform.NewEnvFlag("xray.vless.xtls.show").GetValue(func() string { return defaultFlagValue })
+	if xtlsShow == "true" {
+		xtls_show = true
+	}
+}
+
+// Handler is an outbound connection handler for VLess protocol.
+type Handler struct {
+	serverList    *protocol.ServerList
+	serverPicker  protocol.ServerPicker
+	policyManager policy.Manager
+}
+
+// New creates a new VLess outbound handler.
+func New(ctx context.Context, config *Config) (*Handler, error) {
+	serverList := protocol.NewServerList()
+	for _, rec := range config.Vnext {
+		s, err := protocol.NewServerSpecFromPB(rec)
+		if err != nil {
+			return nil, newError("failed to parse server spec").Base(err).AtError()
+		}
+		serverList.AddServer(s)
+	}
+
+	v := core.MustFromContext(ctx)
+	handler := &Handler{
+		serverList:    serverList,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
+		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
+	}
+
+	return handler, nil
+}
+
+// Process implements proxy.Outbound.Process().
+func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
+	var rec *protocol.ServerSpec
+	var conn internet.Connection
+
+	if err := retry.ExponentialBackoff(5, 200).On(func() error {
+		rec = h.serverPicker.PickServer()
+		var err error
+		conn, err = dialer.Dial(ctx, rec.Destination())
+		if err != nil {
+			return err
+		}
+		return nil
+	}); err != nil {
+		return newError("failed to find an available destination").Base(err).AtWarning()
+	}
+	defer conn.Close()
+
+	iConn := conn
+	statConn, ok := iConn.(*internet.StatCouterConnection)
+	if ok {
+		iConn = statConn.Connection
+	}
+
+	outbound := session.OutboundFromContext(ctx)
+	if outbound == nil || !outbound.Target.IsValid() {
+		return newError("target not specified").AtError()
+	}
+
+	target := outbound.Target
+	newError("tunneling request to ", target, " via ", rec.Destination()).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+
+	command := protocol.RequestCommandTCP
+	if target.Network == net.Network_UDP {
+		command = protocol.RequestCommandUDP
+	}
+	if target.Address.Family().IsDomain() && target.Address.Domain() == "v1.mux.cool" {
+		command = protocol.RequestCommandMux
+	}
+
+	request := &protocol.RequestHeader{
+		Version: encoding.Version,
+		User:    rec.PickUser(),
+		Command: command,
+		Address: target.Address,
+		Port:    target.Port,
+	}
+
+	account := request.User.Account.(*vless.MemoryAccount)
+
+	requestAddons := &encoding.Addons{
+		Flow: account.Flow,
+	}
+
+	var rawConn syscall.RawConn
+
+	allowUDP443 := false
+	switch requestAddons.Flow {
+	case vless.XRO + "-udp443", vless.XRD + "-udp443":
+		allowUDP443 = true
+		requestAddons.Flow = requestAddons.Flow[:16]
+		fallthrough
+	case vless.XRO, vless.XRD:
+		switch request.Command {
+		case protocol.RequestCommandMux:
+			return newError(requestAddons.Flow + " doesn't support Mux").AtWarning()
+		case protocol.RequestCommandUDP:
+			if !allowUDP443 && request.Port == 443 {
+				return newError(requestAddons.Flow + " stopped UDP/443").AtInfo()
+			}
+			requestAddons.Flow = ""
+		case protocol.RequestCommandTCP:
+			if xtlsConn, ok := iConn.(*xtls.Conn); ok {
+				xtlsConn.RPRX = true
+				xtlsConn.SHOW = xtls_show
+				xtlsConn.MARK = "XTLS"
+				if requestAddons.Flow == vless.XRD {
+					xtlsConn.DirectMode = true
+					if sc, ok := xtlsConn.Connection.(syscall.Conn); ok {
+						rawConn, _ = sc.SyscallConn()
+					}
+				}
+			} else {
+				return newError(`failed to use ` + requestAddons.Flow + `, maybe "security" is not "xtls"`).AtWarning()
+			}
+		}
+	default:
+		if _, ok := iConn.(*xtls.Conn); ok {
+			panic(`To avoid misunderstanding, you must fill in VLESS "flow" when using XTLS.`)
+		}
+	}
+
+	sessionPolicy := h.policyManager.ForLevel(request.User.Level)
+	ctx, cancel := context.WithCancel(ctx)
+	timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
+
+	clientReader := link.Reader // .(*pipe.Reader)
+	clientWriter := link.Writer // .(*pipe.Writer)
+
+	postRequest := func() error {
+		defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
+
+		bufferWriter := buf.NewBufferedWriter(buf.NewWriter(conn))
+		if err := encoding.EncodeRequestHeader(bufferWriter, request, requestAddons); err != nil {
+			return newError("failed to encode request header").Base(err).AtWarning()
+		}
+
+		// default: serverWriter := bufferWriter
+		serverWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons)
+		if err := buf.CopyOnceTimeout(clientReader, serverWriter, time.Millisecond*100); err != nil && err != buf.ErrNotTimeoutReader && err != buf.ErrReadTimeout {
+			return err // ...
+		}
+
+		// Flush; bufferWriter.WriteMultiBufer now is bufferWriter.writer.WriteMultiBuffer
+		if err := bufferWriter.SetBuffered(false); err != nil {
+			return newError("failed to write A request payload").Base(err).AtWarning()
+		}
+
+		// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBufer
+		if err := buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer)); err != nil {
+			return newError("failed to transfer request payload").Base(err).AtInfo()
+		}
+
+		// Indicates the end of request payload.
+		switch requestAddons.Flow {
+		default:
+		}
+		return nil
+	}
+
+	getResponse := func() error {
+		defer timer.SetTimeout(sessionPolicy.Timeouts.UplinkOnly)
+
+		responseAddons, err := encoding.DecodeResponseHeader(conn, request)
+		if err != nil {
+			return newError("failed to decode response header").Base(err).AtInfo()
+		}
+
+		// default: serverReader := buf.NewReader(conn)
+		serverReader := encoding.DecodeBodyAddons(conn, request, responseAddons)
+
+		if rawConn != nil {
+			var counter stats.Counter
+			if statConn != nil {
+				counter = statConn.ReadCounter
+			}
+			err = encoding.ReadV(serverReader, clientWriter, timer, iConn.(*xtls.Conn), rawConn, counter)
+		} else {
+			// from serverReader.ReadMultiBuffer to clientWriter.WriteMultiBufer
+			err = buf.Copy(serverReader, clientWriter, buf.UpdateActivity(timer))
+		}
+
+		if err != nil {
+			return newError("failed to transfer response payload").Base(err).AtInfo()
+		}
+
+		return nil
+	}
+
+	if err := task.Run(ctx, postRequest, task.OnSuccess(getResponse, task.Close(clientWriter))); err != nil {
+		return newError("connection ends").Base(err).AtInfo()
+	}
+
+	return nil
+}