Add stats counter for outbounds

app/policy/config.go

@@ -84,8 +84,10 @@ func (p *Policy) ToCorePolicy() policy.Session {
 func (p *SystemPolicy) ToCorePolicy() policy.System {
 	return policy.System{
 		Stats: policy.SystemStats{
-			InboundUplink:   p.Stats.InboundUplink,
-			InboundDownlink: p.Stats.InboundDownlink,
+			InboundUplink:    p.Stats.InboundUplink,
+			InboundDownlink:  p.Stats.InboundDownlink,
+			OutboundUplink:   p.Stats.OutboundUplink,
+			OutboundDownlink: p.Stats.OutboundDownlink,
 		},
 	}
 }

app/policy/config.pb.go

@@ -1,3 +1,9 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        (unknown)
+// source: config.proto
+
 package policy
 
 import (
@@ -30,7 +36,7 @@ type Second struct {
 func (x *Second) Reset() {
 	*x = Second{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[0]
+		mi := &file_config_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -43,7 +49,7 @@ func (x *Second) String() string {
 func (*Second) ProtoMessage() {}
 
 func (x *Second) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[0]
+	mi := &file_config_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -56,7 +62,7 @@ func (x *Second) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Second.ProtoReflect.Descriptor instead.
 func (*Second) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{0}
+	return file_config_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *Second) GetValue() uint32 {
@@ -79,7 +85,7 @@ type Policy struct {
 func (x *Policy) Reset() {
 	*x = Policy{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[1]
+		mi := &file_config_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -92,7 +98,7 @@ func (x *Policy) String() string {
 func (*Policy) ProtoMessage() {}
 
 func (x *Policy) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[1]
+	mi := &file_config_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -105,7 +111,7 @@ func (x *Policy) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Policy.ProtoReflect.Descriptor instead.
 func (*Policy) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{1}
+	return file_config_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *Policy) GetTimeout() *Policy_Timeout {
@@ -140,7 +146,7 @@ type SystemPolicy struct {
 func (x *SystemPolicy) Reset() {
 	*x = SystemPolicy{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[2]
+		mi := &file_config_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -153,7 +159,7 @@ func (x *SystemPolicy) String() string {
 func (*SystemPolicy) ProtoMessage() {}
 
 func (x *SystemPolicy) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[2]
+	mi := &file_config_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -166,7 +172,7 @@ func (x *SystemPolicy) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SystemPolicy.ProtoReflect.Descriptor instead.
 func (*SystemPolicy) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{2}
+	return file_config_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *SystemPolicy) GetStats() *SystemPolicy_Stats {
@@ -188,7 +194,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[3]
+		mi := &file_config_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -201,7 +207,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[3]
+	mi := &file_config_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -214,7 +220,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{3}
+	return file_config_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *Config) GetLevel() map[uint32]*Policy {
@@ -246,7 +252,7 @@ type Policy_Timeout struct {
 func (x *Policy_Timeout) Reset() {
 	*x = Policy_Timeout{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[4]
+		mi := &file_config_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -259,7 +265,7 @@ func (x *Policy_Timeout) String() string {
 func (*Policy_Timeout) ProtoMessage() {}
 
 func (x *Policy_Timeout) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[4]
+	mi := &file_config_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -272,7 +278,7 @@ func (x *Policy_Timeout) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Policy_Timeout.ProtoReflect.Descriptor instead.
 func (*Policy_Timeout) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{1, 0}
+	return file_config_proto_rawDescGZIP(), []int{1, 0}
 }
 
 func (x *Policy_Timeout) GetHandshake() *Second {
@@ -315,7 +321,7 @@ type Policy_Stats struct {
 func (x *Policy_Stats) Reset() {
 	*x = Policy_Stats{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[5]
+		mi := &file_config_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -328,7 +334,7 @@ func (x *Policy_Stats) String() string {
 func (*Policy_Stats) ProtoMessage() {}
 
 func (x *Policy_Stats) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[5]
+	mi := &file_config_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -341,7 +347,7 @@ func (x *Policy_Stats) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Policy_Stats.ProtoReflect.Descriptor instead.
 func (*Policy_Stats) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{1, 1}
+	return file_config_proto_rawDescGZIP(), []int{1, 1}
 }
 
 func (x *Policy_Stats) GetUserUplink() bool {
@@ -370,7 +376,7 @@ type Policy_Buffer struct {
 func (x *Policy_Buffer) Reset() {
 	*x = Policy_Buffer{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[6]
+		mi := &file_config_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -383,7 +389,7 @@ func (x *Policy_Buffer) String() string {
 func (*Policy_Buffer) ProtoMessage() {}
 
 func (x *Policy_Buffer) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[6]
+	mi := &file_config_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -396,7 +402,7 @@ func (x *Policy_Buffer) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Policy_Buffer.ProtoReflect.Descriptor instead.
 func (*Policy_Buffer) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{1, 2}
+	return file_config_proto_rawDescGZIP(), []int{1, 2}
 }
 
 func (x *Policy_Buffer) GetConnection() int32 {
@@ -411,14 +417,16 @@ type SystemPolicy_Stats struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	InboundUplink   bool `protobuf:"varint,1,opt,name=inbound_uplink,json=inboundUplink,proto3" json:"inbound_uplink,omitempty"`
-	InboundDownlink bool `protobuf:"varint,2,opt,name=inbound_downlink,json=inboundDownlink,proto3" json:"inbound_downlink,omitempty"`
+	InboundUplink    bool `protobuf:"varint,1,opt,name=inbound_uplink,json=inboundUplink,proto3" json:"inbound_uplink,omitempty"`
+	InboundDownlink  bool `protobuf:"varint,2,opt,name=inbound_downlink,json=inboundDownlink,proto3" json:"inbound_downlink,omitempty"`
+	OutboundUplink   bool `protobuf:"varint,3,opt,name=outbound_uplink,json=outboundUplink,proto3" json:"outbound_uplink,omitempty"`
+	OutboundDownlink bool `protobuf:"varint,4,opt,name=outbound_downlink,json=outboundDownlink,proto3" json:"outbound_downlink,omitempty"`
 }
 
 func (x *SystemPolicy_Stats) Reset() {
 	*x = SystemPolicy_Stats{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[7]
+		mi := &file_config_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -431,7 +439,7 @@ func (x *SystemPolicy_Stats) String() string {
 func (*SystemPolicy_Stats) ProtoMessage() {}
 
 func (x *SystemPolicy_Stats) ProtoReflect() protoreflect.Message {
-	mi := &file_v2ray_com_core_app_policy_config_proto_msgTypes[7]
+	mi := &file_config_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -444,7 +452,7 @@ func (x *SystemPolicy_Stats) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SystemPolicy_Stats.ProtoReflect.Descriptor instead.
 func (*SystemPolicy_Stats) Descriptor() ([]byte, []int) {
-	return file_v2ray_com_core_app_policy_config_proto_rawDescGZIP(), []int{2, 0}
+	return file_config_proto_rawDescGZIP(), []int{2, 0}
 }
 
 func (x *SystemPolicy_Stats) GetInboundUplink() bool {
@@ -461,98 +469,116 @@ func (x *SystemPolicy_Stats) GetInboundDownlink() bool {
 	return false
 }
 
-var File_v2ray_com_core_app_policy_config_proto protoreflect.FileDescriptor
-
-var file_v2ray_com_core_app_policy_config_proto_rawDesc = []byte{
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+func (x *SystemPolicy_Stats) GetOutboundUplink() bool {
+	if x != nil {
+		return x.OutboundUplink
+	}
+	return false
+}
+
+func (x *SystemPolicy_Stats) GetOutboundDownlink() bool {
+	if x != nil {
+		return x.OutboundDownlink
+	}
+	return false
+}
+
+var File_config_proto protoreflect.FileDescriptor
+
+var file_config_proto_rawDesc = []byte{
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 }
 
 var (
-	file_v2ray_com_core_app_policy_config_proto_rawDescOnce sync.Once
-	file_v2ray_com_core_app_policy_config_proto_rawDescData = file_v2ray_com_core_app_policy_config_proto_rawDesc
+	file_config_proto_rawDescOnce sync.Once
+	file_config_proto_rawDescData = file_config_proto_rawDesc
 )
 
-func file_v2ray_com_core_app_policy_config_proto_rawDescGZIP() []byte {
-	file_v2ray_com_core_app_policy_config_proto_rawDescOnce.Do(func() {
-		file_v2ray_com_core_app_policy_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_v2ray_com_core_app_policy_config_proto_rawDescData)
+func file_config_proto_rawDescGZIP() []byte {
+	file_config_proto_rawDescOnce.Do(func() {
+		file_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_config_proto_rawDescData)
 	})
-	return file_v2ray_com_core_app_policy_config_proto_rawDescData
+	return file_config_proto_rawDescData
 }
 
-var file_v2ray_com_core_app_policy_config_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
-var file_v2ray_com_core_app_policy_config_proto_goTypes = []interface{}{
+var file_config_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_config_proto_goTypes = []interface{}{
 	(*Second)(nil),             // 0: v2ray.core.app.policy.Second
 	(*Policy)(nil),             // 1: v2ray.core.app.policy.Policy
 	(*SystemPolicy)(nil),       // 2: v2ray.core.app.policy.SystemPolicy
@@ -563,7 +589,7 @@ var file_v2ray_com_core_app_policy_config_proto_goTypes = []interface{}{
 	(*SystemPolicy_Stats)(nil), // 7: v2ray.core.app.policy.SystemPolicy.Stats
 	nil,                        // 8: v2ray.core.app.policy.Config.LevelEntry
 }
-var file_v2ray_com_core_app_policy_config_proto_depIdxs = []int32{
+var file_config_proto_depIdxs = []int32{
 	4,  // 0: v2ray.core.app.policy.Policy.timeout:type_name -> v2ray.core.app.policy.Policy.Timeout
 	5,  // 1: v2ray.core.app.policy.Policy.stats:type_name -> v2ray.core.app.policy.Policy.Stats
 	6,  // 2: v2ray.core.app.policy.Policy.buffer:type_name -> v2ray.core.app.policy.Policy.Buffer
@@ -582,13 +608,13 @@ var file_v2ray_com_core_app_policy_config_proto_depIdxs = []int32{
 	0,  // [0:11] is the sub-list for field type_name
 }
 
-func init() { file_v2ray_com_core_app_policy_config_proto_init() }
-func file_v2ray_com_core_app_policy_config_proto_init() {
-	if File_v2ray_com_core_app_policy_config_proto != nil {
+func init() { file_config_proto_init() }
+func file_config_proto_init() {
+	if File_config_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Second); i {
 			case 0:
 				return &v.state
@@ -600,7 +626,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Policy); i {
 			case 0:
 				return &v.state
@@ -612,7 +638,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SystemPolicy); i {
 			case 0:
 				return &v.state
@@ -624,7 +650,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Config); i {
 			case 0:
 				return &v.state
@@ -636,7 +662,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Policy_Timeout); i {
 			case 0:
 				return &v.state
@@ -648,7 +674,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Policy_Stats); i {
 			case 0:
 				return &v.state
@@ -660,7 +686,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Policy_Buffer); i {
 			case 0:
 				return &v.state
@@ -672,7 +698,7 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 				return nil
 			}
 		}
-		file_v2ray_com_core_app_policy_config_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+		file_config_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SystemPolicy_Stats); i {
 			case 0:
 				return &v.state
@@ -689,18 +715,18 @@ func file_v2ray_com_core_app_policy_config_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_v2ray_com_core_app_policy_config_proto_rawDesc,
+			RawDescriptor: file_config_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
-		GoTypes:           file_v2ray_com_core_app_policy_config_proto_goTypes,
-		DependencyIndexes: file_v2ray_com_core_app_policy_config_proto_depIdxs,
-		MessageInfos:      file_v2ray_com_core_app_policy_config_proto_msgTypes,
+		GoTypes:           file_config_proto_goTypes,
+		DependencyIndexes: file_config_proto_depIdxs,
+		MessageInfos:      file_config_proto_msgTypes,
 	}.Build()
-	File_v2ray_com_core_app_policy_config_proto = out.File
-	file_v2ray_com_core_app_policy_config_proto_rawDesc = nil
-	file_v2ray_com_core_app_policy_config_proto_goTypes = nil
-	file_v2ray_com_core_app_policy_config_proto_depIdxs = nil
+	File_config_proto = out.File
+	file_config_proto_rawDesc = nil
+	file_config_proto_goTypes = nil
+	file_config_proto_depIdxs = nil
 }

app/policy/config.proto

@@ -38,6 +38,8 @@ message SystemPolicy {
   message Stats {
     bool inbound_uplink = 1;
     bool inbound_downlink = 2;
+    bool outbound_uplink = 3;
+    bool outbound_downlink = 4;
   }
 
   Stats stats = 1;

app/proxyman/outbound/handler.go

@@ -10,6 +10,8 @@ import (
 	"v2ray.com/core/common/net"
 	"v2ray.com/core/common/session"
 	"v2ray.com/core/features/outbound"
+	"v2ray.com/core/features/policy"
+	"v2ray.com/core/features/stats"
 	"v2ray.com/core/proxy"
 	"v2ray.com/core/transport"
 	"v2ray.com/core/transport/internet"
@@ -17,6 +19,31 @@ import (
 	"v2ray.com/core/transport/pipe"
 )
 
+func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
+	var uplinkCounter stats.Counter
+	var downlinkCounter stats.Counter
+
+	policy := v.GetFeature(policy.ManagerType()).(policy.Manager)
+	if len(tag) > 0 && policy.ForSystem().Stats.OutboundUplink {
+		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
+		name := "outbound>>>" + tag + ">>>traffic>>>uplink"
+		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		if c != nil {
+			uplinkCounter = c
+		}
+	}
+	if len(tag) > 0 && policy.ForSystem().Stats.OutboundDownlink {
+		statsManager := v.GetFeature(stats.ManagerType()).(stats.Manager)
+		name := "outbound>>>" + tag + ">>>traffic>>>downlink"
+		c, _ := stats.GetOrRegisterCounter(statsManager, name)
+		if c != nil {
+			downlinkCounter = c
+		}
+	}
+
+	return uplinkCounter, downlinkCounter
+}
+
 // Handler is an implements of outbound.Handler.
 type Handler struct {
 	tag             string
@@ -25,14 +52,19 @@ type Handler struct {
 	proxy           proxy.Outbound
 	outboundManager outbound.Manager
 	mux             *mux.ClientManager
+	uplinkCounter   stats.Counter
+	downlinkCounter stats.Counter
 }
 
 // NewHandler create a new Handler based on the given configuration.
 func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbound.Handler, error) {
 	v := core.MustFromContext(ctx)
+	uplinkCounter, downlinkCounter := getStatCounter(v, config.Tag)
 	h := &Handler{
 		tag:             config.Tag,
 		outboundManager: v.GetFeature(outbound.ManagerType()).(outbound.Manager),
+		uplinkCounter:   uplinkCounter,
+		downlinkCounter: downlinkCounter,
 	}
 
 	if config.SenderSettings != nil {
@@ -148,7 +180,7 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Conn
 					conn = tls.Client(conn, tlsConfig)
 				}
 
-				return conn, nil
+				return h.getStatCouterConnection(conn), nil
 			}
 
 			newError("failed to get outbound handler with tag: ", tag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
@@ -164,7 +196,19 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Conn
 		}
 	}
 
-	return internet.Dial(ctx, dest, h.streamSettings)
+	conn, err := internet.Dial(ctx, dest, h.streamSettings)
+	return h.getStatCouterConnection(conn), err
+}
+
+func (h *Handler) getStatCouterConnection(conn internet.Connection) (internet.Connection) {
+	if h.uplinkCounter != nil || h.downlinkCounter != nil {
+		return &internet.StatCouterConnection{
+			Connection:   conn,
+			ReadCounter:  h.downlinkCounter,
+			WriteCounter: h.uplinkCounter,
+		}
+	}
+	return conn
 }
 
 // GetOutbound implements proxy.GetOutbound.

features/policy/policy.go

@@ -41,6 +41,10 @@ type SystemStats struct {
 	InboundUplink bool
 	// Whether or not to enable stat counter for downlink traffic in inbound handlers.
 	InboundDownlink bool
+	// Whether or not to enable stat counter for uplink traffic in outbound handlers.
+	OutboundUplink bool
+	// Whether or not to enable stat counter for downlink traffic in outbound handlers.
+	OutboundDownlink bool
 }
 
 // System contains policy settings at system level.

infra/conf/policy.go

@@ -51,15 +51,19 @@ func (t *Policy) Build() (*policy.Policy, error) {
 }
 
 type SystemPolicy struct {
-	StatsInboundUplink   bool `json:"statsInboundUplink"`
-	StatsInboundDownlink bool `json:"statsInboundDownlink"`
+	StatsInboundUplink    bool `json:"statsInboundUplink"`
+	StatsInboundDownlink  bool `json:"statsInboundDownlink"`
+	StatsOutboundUplink   bool `json:"statsOutboundUplink"`
+	StatsOutboundDownlink bool `json:"statsOutboundDownlink"`
 }
 
 func (p *SystemPolicy) Build() (*policy.SystemPolicy, error) {
 	return &policy.SystemPolicy{
 		Stats: &policy.SystemPolicy_Stats{
-			InboundUplink:   p.StatsInboundUplink,
-			InboundDownlink: p.StatsInboundDownlink,
+			InboundUplink:    p.StatsInboundUplink,
+			InboundDownlink:  p.StatsInboundDownlink,
+			OutboundUplink:   p.StatsOutboundUplink,
+			OutboundDownlink: p.StatsOutboundDownlink,
 		},
 	}, nil
 }

release/config/config.json

@@ -119,7 +119,9 @@
     },
     "system": {
       "statsInboundUplink": false,
-      "statsInboundDownlink": false
+      "statsInboundDownlink": false,
+      "statsOutboundUplink": false,
+      "statsOutboundDownlink": false
     }
   },