Revert "Chore: Three small 'fixes'"

This reverts commit 4e826abebf.

.github/workflows/release-win7.yml

@@ -72,7 +72,7 @@ jobs:
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
           check-latest: true

.github/workflows/release.yml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Trigger Asset Update Workflow if Assets Missing
         if: steps.check-assets.outputs.missing == 'true'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -176,7 +176,7 @@ jobs:
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
           check-latest: true

.github/workflows/test.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Checkout codebase
         uses: actions/checkout@v5
       - name: Set up Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
           check-latest: true

README.md

@@ -11,10 +11,8 @@
 [<img alt="Project X NFT" width="150px" src="https://raw2.seadn.io/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/7fa9ce900fb39b44226348db330e32/8b7fa9ce900fb39b44226348db330e32.svg" />](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
 
 - **ETH/USDT/USDC: `0xDc3Fe44F0f25D13CACb1C4896CD0D321df3146Ee`**
-- **Project X NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1**
-- **VLESS NFT: https://opensea.io/collection/vless**
 - **REALITY NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2**
-- **Related links: [VLESS Post-Quantum Encryption](https://github.com/XTLS/Xray-core/pull/5067), [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113), [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633)**
+- **Related links: https://opensea.io/collection/xtls, [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633), [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113)**
 
 ## License
 
@@ -44,7 +42,6 @@
   - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
   - [wulabing/xray_docker](https://github.com/wulabing/xray_docker)
 - Web Panel - **WARNING: Please DO NOT USE plain HTTP panels like 3X-UI**, as they are believed to be bribed by Iran GFW for supporting plain HTTP by default and refused to change (https://github.com/XTLS/Xray-core/pull/3884#issuecomment-2439595331), which has already put many users' data security in danger in the past few years. **If you are already using 3X-UI, please switch to the following panels, which are verified to support HTTPS and SSH port forwarding only:**
-  - [X-Panel](https://github.com/xeefei/X-Panel)
   - [Remnawave](https://github.com/remnawave/panel)
   - [Marzban](https://github.com/Gozargah/Marzban)
   - [Xray-UI](https://github.com/qist/xray-ui)

app/dispatcher/default.go

@@ -29,7 +29,7 @@ var errSniffingTimeout = errors.New("timeout on sniffing")
 
 type cachedReader struct {
 	sync.Mutex
-	reader buf.TimeoutReader // *pipe.Reader or *buf.TimeoutWrapperReader
+	reader *pipe.Reader
 	cache  buf.MultiBuffer
 }
 
@@ -87,9 +87,7 @@ func (r *cachedReader) Interrupt() {
 		r.cache = buf.ReleaseMulti(r.cache)
 	}
 	r.Unlock()
-	if p, ok := r.reader.(*pipe.Reader); ok {
+	r.reader.Interrupt()
-		p.Interrupt()
-	}
 }
 
 // DefaultDispatcher is a default implementation of Dispatcher.
@@ -196,47 +194,6 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
 	return inboundLink, outboundLink
 }
 
-func (d *DefaultDispatcher) WrapLink(ctx context.Context, link *transport.Link) *transport.Link {
-	sessionInbound := session.InboundFromContext(ctx)
-	var user *protocol.MemoryUser
-	if sessionInbound != nil {
-		user = sessionInbound.User
-	}
-
-	link.Reader = &buf.TimeoutWrapperReader{Reader: link.Reader}
-
-	if user != nil && len(user.Email) > 0 {
-		p := d.policy.ForLevel(user.Level)
-		if p.Stats.UserUplink {
-			name := "user>>>" + user.Email + ">>>traffic>>>uplink"
-			if c, _ := stats.GetOrRegisterCounter(d.stats, name); c != nil {
-				link.Reader.(*buf.TimeoutWrapperReader).Counter = c
-			}
-		}
-		if p.Stats.UserDownlink {
-			name := "user>>>" + user.Email + ">>>traffic>>>downlink"
-			if c, _ := stats.GetOrRegisterCounter(d.stats, name); c != nil {
-				link.Writer = &SizeStatWriter{
-					Counter: c,
-					Writer:  link.Writer,
-				}
-			}
-		}
-		if p.Stats.UserOnline {
-			name := "user>>>" + user.Email + ">>>online"
-			if om, _ := stats.GetOrRegisterOnlineMap(d.stats, name); om != nil {
-				sessionInbounds := session.InboundFromContext(ctx)
-				userIP := sessionInbounds.Source.Address.String()
-				om.AddIP(userIP)
-				// log Online user with ips
-				// errors.LogDebug(ctx, "user>>>" + user.Email + ">>>online", om.Count(), om.List())
-			}
-		}
-	}
-
-	return link
-}
-
 func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
 	domain := result.Domain()
 	if domain == "" {
@@ -357,13 +314,12 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 		content = new(session.Content)
 		ctx = session.ContextWithContent(ctx, content)
 	}
-	outbound = d.WrapLink(ctx, outbound)
 	sniffingRequest := content.SniffingRequest
 	if !sniffingRequest.Enabled {
 		d.routedDispatch(ctx, outbound, destination)
 	} else {
 		cReader := &cachedReader{
-			reader: outbound.Reader.(buf.TimeoutReader),
+			reader: outbound.Reader.(*pipe.Reader),
 		}
 		outbound.Reader = cReader
 		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
@@ -483,9 +439,6 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 				handler = h
 			} else {
 				errors.LogWarning(ctx, "non existing outTag: ", outTag)
-				common.Close(link.Writer)
-				common.Interrupt(link.Reader)
-				return // DO NOT CHANGE: the traffic shouldn't be processed by default outbound if the specified outbound tag doesn't exist (yet), e.g., VLESS Reverse Proxy
 			}
 		} else {
 			errors.LogInfo(ctx, "default route for ", destination)

app/dns/dns.go

@@ -329,7 +329,7 @@ func init() {
 }
 
 func checkSystemNetwork() (supportIPv4 bool, supportIPv6 bool) {
-	conn4, err4 := net.Dial("udp4", "192.33.4.12:53")
+	conn4, err4 := net.Dial("udp4", "8.8.8.8:53")
 	if err4 != nil {
 		supportIPv4 = false
 	} else {
@@ -337,7 +337,7 @@ func checkSystemNetwork() (supportIPv4 bool, supportIPv6 bool) {
 		conn4.Close()
 	}
 
-	conn6, err6 := net.Dial("udp6", "[2001:500:2::c]:53")
+	conn6, err6 := net.Dial("udp6", "[2001:4860:4860::8888]:53")
 	if err6 != nil {
 		supportIPv6 = false
 	} else {

app/dns/dnscommon_test.go

@@ -39,8 +39,8 @@ func Test_parseResponse(t *testing.T) {
 		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")),
 		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
 		common.Must2(dns.NewRR("google.com. IN CNAME test.google.com")),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001:4860:4860::8888")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8888")),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001:4860:4860::8844")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8844")),
 	)
 	p = append(p, common.Must2(ans.Pack()))
 
@@ -72,7 +72,7 @@ func Test_parseResponse(t *testing.T) {
 		},
 		{
 			"aaaa record",
-			&IPRecord{2, []net.IP{net.ParseIP("2001:4860:4860::8888"), net.ParseIP("2001:4860:4860::8844")}, time.Time{}, dnsmessage.RCodeSuccess, nil},
+			&IPRecord{2, []net.IP{net.ParseIP("2001::123:8888"), net.ParseIP("2001::123:8844")}, time.Time{}, dnsmessage.RCodeSuccess, nil},
 			false,
 		},
 	}

app/dns/nameserver_udp.go

@@ -90,9 +90,7 @@ func (s *ClassicNameServer) RequestsCleanup() error {
 
 // HandleResponse handles udp response packet from remote DNS server.
 func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_proto.Packet) {
-	payload := packet.Payload
+	ipRec, err := parseResponse(packet.Payload.Bytes())
-	ipRec, err := parseResponse(payload.Bytes())
-	payload.Release()
 	if err != nil {
 		errors.LogError(ctx, s.Name(), " fail to parse responded DNS udp")
 		return
@@ -127,8 +125,6 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 			newReq.msg = &newMsg
 			s.addPendingRequest(&newReq)
 			b, _ := dns.PackMessage(newReq.msg)
-			copyDest := net.UDPDestination(s.address.Address, s.address.Port)
-			b.UDP = &copyDest
 			s.udpServer.Dispatch(toDnsContext(newReq.ctx, s.address.String()), *s.address, b)
 			return
 		}
@@ -162,8 +158,6 @@ func (s *ClassicNameServer) sendQuery(ctx context.Context, _ chan<- error, domai
 		}
 		s.addPendingRequest(udpReq)
 		b, _ := dns.PackMessage(req.msg)
-		copyDest := net.UDPDestination(s.address.Address, s.address.Port)
-		b.UDP = &copyDest
 		s.udpServer.Dispatch(toDnsContext(ctx, s.address.String()), *s.address, b)
 	}
 }

app/proxyman/config.go

@@ -1 +1,23 @@
 package proxyman
+
+func (s *AllocationStrategy) GetConcurrencyValue() uint32 {
+	if s == nil || s.Concurrency == nil {
+		return 3
+	}
+	return s.Concurrency.Value
+}
+
+func (s *AllocationStrategy) GetRefreshValue() uint32 {
+	if s == nil || s.Refresh == nil {
+		return 5
+	}
+	return s.Refresh.Value
+}
+
+func (c *ReceiverConfig) GetEffectiveSniffingSettings() *SniffingConfig {
+	if c.SniffingSettings != nil {
+		return c.SniffingSettings
+	}
+
+	return nil
+}

app/proxyman/config.pb.go

@@ -23,6 +23,58 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type AllocationStrategy_Type int32
+
+const (
+	// Always allocate all connection handlers.
+	AllocationStrategy_Always AllocationStrategy_Type = 0
+	// Randomly allocate specific range of handlers.
+	AllocationStrategy_Random AllocationStrategy_Type = 1
+	// External. Not supported yet.
+	AllocationStrategy_External AllocationStrategy_Type = 2
+)
+
+// Enum value maps for AllocationStrategy_Type.
+var (
+	AllocationStrategy_Type_name = map[int32]string{
+		0: "Always",
+		1: "Random",
+		2: "External",
+	}
+	AllocationStrategy_Type_value = map[string]int32{
+		"Always":   0,
+		"Random":   1,
+		"External": 2,
+	}
+)
+
+func (x AllocationStrategy_Type) Enum() *AllocationStrategy_Type {
+	p := new(AllocationStrategy_Type)
+	*p = x
+	return p
+}
+
+func (x AllocationStrategy_Type) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (AllocationStrategy_Type) Descriptor() protoreflect.EnumDescriptor {
+	return file_app_proxyman_config_proto_enumTypes[0].Descriptor()
+}
+
+func (AllocationStrategy_Type) Type() protoreflect.EnumType {
+	return &file_app_proxyman_config_proto_enumTypes[0]
+}
+
+func (x AllocationStrategy_Type) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use AllocationStrategy_Type.Descriptor instead.
+func (AllocationStrategy_Type) EnumDescriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1, 0}
+}
+
 type InboundConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -59,6 +111,71 @@ func (*InboundConfig) Descriptor() ([]byte, []int) {
 	return file_app_proxyman_config_proto_rawDescGZIP(), []int{0}
 }
 
+type AllocationStrategy struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Type AllocationStrategy_Type `protobuf:"varint,1,opt,name=type,proto3,enum=xray.app.proxyman.AllocationStrategy_Type" json:"type,omitempty"`
+	// Number of handlers (ports) running in parallel.
+	// Default value is 3 if unset.
+	Concurrency *AllocationStrategy_AllocationStrategyConcurrency `protobuf:"bytes,2,opt,name=concurrency,proto3" json:"concurrency,omitempty"`
+	// Number of minutes before a handler is regenerated.
+	// Default value is 5 if unset.
+	Refresh *AllocationStrategy_AllocationStrategyRefresh `protobuf:"bytes,3,opt,name=refresh,proto3" json:"refresh,omitempty"`
+}
+
+func (x *AllocationStrategy) Reset() {
+	*x = AllocationStrategy{}
+	mi := &file_app_proxyman_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *AllocationStrategy) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AllocationStrategy) ProtoMessage() {}
+
+func (x *AllocationStrategy) ProtoReflect() protoreflect.Message {
+	mi := &file_app_proxyman_config_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AllocationStrategy.ProtoReflect.Descriptor instead.
+func (*AllocationStrategy) Descriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *AllocationStrategy) GetType() AllocationStrategy_Type {
+	if x != nil {
+		return x.Type
+	}
+	return AllocationStrategy_Always
+}
+
+func (x *AllocationStrategy) GetConcurrency() *AllocationStrategy_AllocationStrategyConcurrency {
+	if x != nil {
+		return x.Concurrency
+	}
+	return nil
+}
+
+func (x *AllocationStrategy) GetRefresh() *AllocationStrategy_AllocationStrategyRefresh {
+	if x != nil {
+		return x.Refresh
+	}
+	return nil
+}
+
 type SniffingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -79,7 +196,7 @@ type SniffingConfig struct {
 
 func (x *SniffingConfig) Reset() {
 	*x = SniffingConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[1]
+	mi := &file_app_proxyman_config_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -91,7 +208,7 @@ func (x *SniffingConfig) String() string {
 func (*SniffingConfig) ProtoMessage() {}
 
 func (x *SniffingConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[1]
+	mi := &file_app_proxyman_config_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -104,7 +221,7 @@ func (x *SniffingConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SniffingConfig.ProtoReflect.Descriptor instead.
 func (*SniffingConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *SniffingConfig) GetEnabled() bool {
@@ -151,14 +268,15 @@ type ReceiverConfig struct {
 	PortList *net.PortList `protobuf:"bytes,1,opt,name=port_list,json=portList,proto3" json:"port_list,omitempty"`
 	// Listen specifies the IP address that the Receiver should listen on.
 	Listen                     *net.IPOrDomain        `protobuf:"bytes,2,opt,name=listen,proto3" json:"listen,omitempty"`
-	StreamSettings             *internet.StreamConfig `protobuf:"bytes,3,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
+	AllocationStrategy         *AllocationStrategy    `protobuf:"bytes,3,opt,name=allocation_strategy,json=allocationStrategy,proto3" json:"allocation_strategy,omitempty"`
-	ReceiveOriginalDestination bool                   `protobuf:"varint,4,opt,name=receive_original_destination,json=receiveOriginalDestination,proto3" json:"receive_original_destination,omitempty"`
+	StreamSettings             *internet.StreamConfig `protobuf:"bytes,4,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
-	SniffingSettings           *SniffingConfig        `protobuf:"bytes,6,opt,name=sniffing_settings,json=sniffingSettings,proto3" json:"sniffing_settings,omitempty"`
+	ReceiveOriginalDestination bool                   `protobuf:"varint,5,opt,name=receive_original_destination,json=receiveOriginalDestination,proto3" json:"receive_original_destination,omitempty"`
+	SniffingSettings           *SniffingConfig        `protobuf:"bytes,7,opt,name=sniffing_settings,json=sniffingSettings,proto3" json:"sniffing_settings,omitempty"`
 }
 
 func (x *ReceiverConfig) Reset() {
 	*x = ReceiverConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[2]
+	mi := &file_app_proxyman_config_proto_msgTypes[3]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -170,7 +288,7 @@ func (x *ReceiverConfig) String() string {
 func (*ReceiverConfig) ProtoMessage() {}
 
 func (x *ReceiverConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[2]
+	mi := &file_app_proxyman_config_proto_msgTypes[3]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -183,7 +301,7 @@ func (x *ReceiverConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReceiverConfig.ProtoReflect.Descriptor instead.
 func (*ReceiverConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{2}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *ReceiverConfig) GetPortList() *net.PortList {
@@ -200,6 +318,13 @@ func (x *ReceiverConfig) GetListen() *net.IPOrDomain {
 	return nil
 }
 
+func (x *ReceiverConfig) GetAllocationStrategy() *AllocationStrategy {
+	if x != nil {
+		return x.AllocationStrategy
+	}
+	return nil
+}
+
 func (x *ReceiverConfig) GetStreamSettings() *internet.StreamConfig {
 	if x != nil {
 		return x.StreamSettings
@@ -233,7 +358,7 @@ type InboundHandlerConfig struct {
 
 func (x *InboundHandlerConfig) Reset() {
 	*x = InboundHandlerConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[3]
+	mi := &file_app_proxyman_config_proto_msgTypes[4]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -245,7 +370,7 @@ func (x *InboundHandlerConfig) String() string {
 func (*InboundHandlerConfig) ProtoMessage() {}
 
 func (x *InboundHandlerConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[3]
+	mi := &file_app_proxyman_config_proto_msgTypes[4]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -258,7 +383,7 @@ func (x *InboundHandlerConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use InboundHandlerConfig.ProtoReflect.Descriptor instead.
 func (*InboundHandlerConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{3}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *InboundHandlerConfig) GetTag() string {
@@ -290,7 +415,7 @@ type OutboundConfig struct {
 
 func (x *OutboundConfig) Reset() {
 	*x = OutboundConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[4]
+	mi := &file_app_proxyman_config_proto_msgTypes[5]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -302,7 +427,7 @@ func (x *OutboundConfig) String() string {
 func (*OutboundConfig) ProtoMessage() {}
 
 func (x *OutboundConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[4]
+	mi := &file_app_proxyman_config_proto_msgTypes[5]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -315,7 +440,7 @@ func (x *OutboundConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use OutboundConfig.ProtoReflect.Descriptor instead.
 func (*OutboundConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{4}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{5}
 }
 
 type SenderConfig struct {
@@ -334,7 +459,7 @@ type SenderConfig struct {
 
 func (x *SenderConfig) Reset() {
 	*x = SenderConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[5]
+	mi := &file_app_proxyman_config_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -346,7 +471,7 @@ func (x *SenderConfig) String() string {
 func (*SenderConfig) ProtoMessage() {}
 
 func (x *SenderConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[5]
+	mi := &file_app_proxyman_config_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -359,7 +484,7 @@ func (x *SenderConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SenderConfig.ProtoReflect.Descriptor instead.
 func (*SenderConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{5}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *SenderConfig) GetVia() *net.IPOrDomain {
@@ -421,7 +546,7 @@ type MultiplexingConfig struct {
 
 func (x *MultiplexingConfig) Reset() {
 	*x = MultiplexingConfig{}
-	mi := &file_app_proxyman_config_proto_msgTypes[6]
+	mi := &file_app_proxyman_config_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -433,7 +558,7 @@ func (x *MultiplexingConfig) String() string {
 func (*MultiplexingConfig) ProtoMessage() {}
 
 func (x *MultiplexingConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[6]
+	mi := &file_app_proxyman_config_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -446,7 +571,7 @@ func (x *MultiplexingConfig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MultiplexingConfig.ProtoReflect.Descriptor instead.
 func (*MultiplexingConfig) Descriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{6}
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *MultiplexingConfig) GetEnabled() bool {
@@ -477,6 +602,96 @@ func (x *MultiplexingConfig) GetXudpProxyUDP443() string {
 	return ""
 }
 
+type AllocationStrategy_AllocationStrategyConcurrency struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value uint32 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *AllocationStrategy_AllocationStrategyConcurrency) Reset() {
+	*x = AllocationStrategy_AllocationStrategyConcurrency{}
+	mi := &file_app_proxyman_config_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *AllocationStrategy_AllocationStrategyConcurrency) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AllocationStrategy_AllocationStrategyConcurrency) ProtoMessage() {}
+
+func (x *AllocationStrategy_AllocationStrategyConcurrency) ProtoReflect() protoreflect.Message {
+	mi := &file_app_proxyman_config_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AllocationStrategy_AllocationStrategyConcurrency.ProtoReflect.Descriptor instead.
+func (*AllocationStrategy_AllocationStrategyConcurrency) Descriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1, 0}
+}
+
+func (x *AllocationStrategy_AllocationStrategyConcurrency) GetValue() uint32 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+type AllocationStrategy_AllocationStrategyRefresh struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value uint32 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *AllocationStrategy_AllocationStrategyRefresh) Reset() {
+	*x = AllocationStrategy_AllocationStrategyRefresh{}
+	mi := &file_app_proxyman_config_proto_msgTypes[9]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *AllocationStrategy_AllocationStrategyRefresh) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AllocationStrategy_AllocationStrategyRefresh) ProtoMessage() {}
+
+func (x *AllocationStrategy_AllocationStrategyRefresh) ProtoReflect() protoreflect.Message {
+	mi := &file_app_proxyman_config_proto_msgTypes[9]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AllocationStrategy_AllocationStrategyRefresh.ProtoReflect.Descriptor instead.
+func (*AllocationStrategy_AllocationStrategyRefresh) Descriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1, 1}
+}
+
+func (x *AllocationStrategy_AllocationStrategyRefresh) GetValue() uint32 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
 var File_app_proxyman_config_proto protoreflect.FileDescriptor
 
 var file_app_proxyman_config_proto_rawDesc = []byte{
@@ -491,98 +706,130 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
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-	0x64, 0x70, 0x43, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x12, 0x28, 0x0a,
 	0x0f, 0x78, 0x75, 0x64, 0x70, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x55, 0x44, 0x50, 0x34, 0x34, 0x33,
-	0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0f, 0x78, 0x75, 0x64, 0x70, 0x50, 0x72, 0x6f, 0x78,
+	0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
-	0x79, 0x55, 0x44, 0x50, 0x34, 0x34, 0x33, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
+	0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x50, 0x01, 0x5a, 0x26, 0x67, 0x69, 0x74,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e,
+	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61,
-	0x50, 0x01, 0x5a, 0x26, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
+	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
+	0x6d, 0x61, 0x6e, 0xaa, 0x02, 0x11, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x50,
-	0x70, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0xaa, 0x02, 0x11, 0x58, 0x72, 0x61,
+	0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-	0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x62, 0x06,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -597,39 +844,48 @@ func file_app_proxyman_config_proto_rawDescGZIP() []byte {
 	return file_app_proxyman_config_proto_rawDescData
 }
 
-var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
+var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_app_proxyman_config_proto_goTypes = []any{
-	(*InboundConfig)(nil),         // 0: xray.app.proxyman.InboundConfig
+	(AllocationStrategy_Type)(0),                             // 0: xray.app.proxyman.AllocationStrategy.Type
-	(*SniffingConfig)(nil),        // 1: xray.app.proxyman.SniffingConfig
+	(*InboundConfig)(nil),                                    // 1: xray.app.proxyman.InboundConfig
-	(*ReceiverConfig)(nil),        // 2: xray.app.proxyman.ReceiverConfig
+	(*AllocationStrategy)(nil),                               // 2: xray.app.proxyman.AllocationStrategy
-	(*InboundHandlerConfig)(nil),  // 3: xray.app.proxyman.InboundHandlerConfig
+	(*SniffingConfig)(nil),                                   // 3: xray.app.proxyman.SniffingConfig
-	(*OutboundConfig)(nil),        // 4: xray.app.proxyman.OutboundConfig
+	(*ReceiverConfig)(nil),                                   // 4: xray.app.proxyman.ReceiverConfig
-	(*SenderConfig)(nil),          // 5: xray.app.proxyman.SenderConfig
+	(*InboundHandlerConfig)(nil),                             // 5: xray.app.proxyman.InboundHandlerConfig
-	(*MultiplexingConfig)(nil),    // 6: xray.app.proxyman.MultiplexingConfig
+	(*OutboundConfig)(nil),                                   // 6: xray.app.proxyman.OutboundConfig
-	(*net.PortList)(nil),          // 7: xray.common.net.PortList
+	(*SenderConfig)(nil),                                     // 7: xray.app.proxyman.SenderConfig
-	(*net.IPOrDomain)(nil),        // 8: xray.common.net.IPOrDomain
+	(*MultiplexingConfig)(nil),                               // 8: xray.app.proxyman.MultiplexingConfig
-	(*internet.StreamConfig)(nil), // 9: xray.transport.internet.StreamConfig
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 9: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	(*serial.TypedMessage)(nil),   // 10: xray.common.serial.TypedMessage
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 10: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	(*internet.ProxyConfig)(nil),  // 11: xray.transport.internet.ProxyConfig
+	(*net.PortList)(nil),                                     // 11: xray.common.net.PortList
-	(internet.DomainStrategy)(0),  // 12: xray.transport.internet.DomainStrategy
+	(*net.IPOrDomain)(nil),                                   // 12: xray.common.net.IPOrDomain
+	(*internet.StreamConfig)(nil),                            // 13: xray.transport.internet.StreamConfig
+	(*serial.TypedMessage)(nil),                              // 14: xray.common.serial.TypedMessage
+	(*internet.ProxyConfig)(nil),                             // 15: xray.transport.internet.ProxyConfig
+	(internet.DomainStrategy)(0),                             // 16: xray.transport.internet.DomainStrategy
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
-	7,  // 0: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
+	0,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
-	8,  // 1: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
+	9,  // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	9,  // 2: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	10, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	1,  // 3: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
+	11, // 3: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
-	10, // 4: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
+	12, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
-	10, // 5: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
+	2,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
-	8,  // 6: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
+	13, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
-	9,  // 7: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	3,  // 7: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
-	11, // 8: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
+	14, // 8: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
-	6,  // 9: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
+	14, // 9: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
-	12, // 10: xray.app.proxyman.SenderConfig.target_strategy:type_name -> xray.transport.internet.DomainStrategy
+	12, // 10: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
-	11, // [11:11] is the sub-list for method output_type
+	13, // 11: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
-	11, // [11:11] is the sub-list for method input_type
+	15, // 12: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
-	11, // [11:11] is the sub-list for extension type_name
+	8,  // 13: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
-	11, // [11:11] is the sub-list for extension extendee
+	16, // 14: xray.app.proxyman.SenderConfig.target_strategy:type_name -> xray.transport.internet.DomainStrategy
-	0,  // [0:11] is the sub-list for field type_name
+	15, // [15:15] is the sub-list for method output_type
+	15, // [15:15] is the sub-list for method input_type
+	15, // [15:15] is the sub-list for extension type_name
+	15, // [15:15] is the sub-list for extension extendee
+	0,  // [0:15] is the sub-list for field type_name
 }
 
 func init() { file_app_proxyman_config_proto_init() }
@@ -642,13 +898,14 @@ func file_app_proxyman_config_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_proxyman_config_proto_rawDesc,
-			NumEnums:      0,
+			NumEnums:      1,
-			NumMessages:   7,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
 		GoTypes:           file_app_proxyman_config_proto_goTypes,
 		DependencyIndexes: file_app_proxyman_config_proto_depIdxs,
+		EnumInfos:         file_app_proxyman_config_proto_enumTypes,
 		MessageInfos:      file_app_proxyman_config_proto_msgTypes,
 	}.Build()
 	File_app_proxyman_config_proto = out.File

app/proxyman/config.proto

@@ -13,6 +13,33 @@ import "common/serial/typed_message.proto";
 
 message InboundConfig {}
 
+message AllocationStrategy {
+  enum Type {
+    // Always allocate all connection handlers.
+    Always = 0;
+
+    // Randomly allocate specific range of handlers.
+    Random = 1;
+
+    // External. Not supported yet.
+    External = 2;
+  }
+
+  Type type = 1;
+
+  message AllocationStrategyConcurrency { uint32 value = 1; }
+
+  // Number of handlers (ports) running in parallel.
+  // Default value is 3 if unset.
+  AllocationStrategyConcurrency concurrency = 2;
+
+  message AllocationStrategyRefresh { uint32 value = 1; }
+
+  // Number of minutes before a handler is regenerated.
+  // Default value is 5 if unset.
+  AllocationStrategyRefresh refresh = 3;
+}
+
 message SniffingConfig {
   // Whether or not to enable content sniffing on an inbound connection.
   bool enabled = 1;
@@ -35,10 +62,11 @@ message ReceiverConfig {
   xray.common.net.PortList port_list = 1;
   // Listen specifies the IP address that the Receiver should listen on.
   xray.common.net.IPOrDomain listen = 2;
-  xray.transport.internet.StreamConfig stream_settings = 3;
+  AllocationStrategy allocation_strategy = 3;
-  bool receive_original_destination = 4;
+  xray.transport.internet.StreamConfig stream_settings = 4;
-  reserved 5;
+  bool receive_original_destination = 5;
-  SniffingConfig sniffing_settings = 6;
+  reserved 6;
+  SniffingConfig sniffing_settings = 7;
 }
 
 message InboundHandlerConfig {

app/proxyman/inbound/always.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
@@ -102,7 +103,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 				stream:          mss,
 				tag:             tag,
 				dispatcher:      h.mux,
-				sniffingConfig:  receiverConfig.SniffingSettings,
+				sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
 				uplinkCounter:   uplinkCounter,
 				downlinkCounter: downlinkCounter,
 				ctx:             ctx,
@@ -124,7 +125,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 						recvOrigDest:    receiverConfig.ReceiveOriginalDestination,
 						tag:             tag,
 						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.SniffingSettings,
+						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
 						uplinkCounter:   uplinkCounter,
 						downlinkCounter: downlinkCounter,
 						ctx:             ctx,
@@ -139,7 +140,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 						address:         address,
 						port:            net.Port(port),
 						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.SniffingSettings,
+						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
 						uplinkCounter:   uplinkCounter,
 						downlinkCounter: downlinkCounter,
 						stream:          mss,
@@ -177,6 +178,14 @@ func (h *AlwaysOnInboundHandler) Close() error {
 	return nil
 }
 
+func (h *AlwaysOnInboundHandler) GetRandomInboundProxy() (interface{}, net.Port, int) {
+	if len(h.workers) == 0 {
+		return nil, 0, 0
+	}
+	w := h.workers[dice.Roll(len(h.workers))]
+	return w.Proxy(), w.Port(), 9999
+}
+
 func (h *AlwaysOnInboundHandler) Tag() string {
 	return h.tag
 }

app/proxyman/inbound/dynamic.go

@@ -0,0 +1,222 @@
+package inbound
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/app/proxyman"
+	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/mux"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/task"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/proxy"
+	"github.com/xtls/xray-core/transport/internet"
+	"google.golang.org/protobuf/proto"
+)
+
+type DynamicInboundHandler struct {
+	tag            string
+	v              *core.Instance
+	proxyConfig    interface{}
+	receiverConfig *proxyman.ReceiverConfig
+	streamSettings *internet.MemoryStreamConfig
+	portMutex      sync.Mutex
+	portsInUse     map[net.Port]struct{}
+	workerMutex    sync.RWMutex
+	worker         []worker
+	lastRefresh    time.Time
+	mux            *mux.Server
+	task           *task.Periodic
+
+	ctx context.Context
+}
+
+func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *proxyman.ReceiverConfig, proxyConfig interface{}) (*DynamicInboundHandler, error) {
+	v := core.MustFromContext(ctx)
+	h := &DynamicInboundHandler{
+		tag:            tag,
+		proxyConfig:    proxyConfig,
+		receiverConfig: receiverConfig,
+		portsInUse:     make(map[net.Port]struct{}),
+		mux:            mux.NewServer(ctx),
+		v:              v,
+		ctx:            ctx,
+	}
+
+	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
+	if err != nil {
+		return nil, errors.New("failed to parse stream settings").Base(err).AtWarning()
+	}
+	if receiverConfig.ReceiveOriginalDestination {
+		if mss.SocketSettings == nil {
+			mss.SocketSettings = &internet.SocketConfig{}
+		}
+		if mss.SocketSettings.Tproxy == internet.SocketConfig_Off {
+			mss.SocketSettings.Tproxy = internet.SocketConfig_Redirect
+		}
+		mss.SocketSettings.ReceiveOriginalDestAddress = true
+	}
+
+	h.streamSettings = mss
+
+	h.task = &task.Periodic{
+		Interval: time.Minute * time.Duration(h.receiverConfig.AllocationStrategy.GetRefreshValue()),
+		Execute:  h.refresh,
+	}
+
+	return h, nil
+}
+
+func (h *DynamicInboundHandler) allocatePort() net.Port {
+	allPorts := []int32{}
+	for _, pr := range h.receiverConfig.PortList.Range {
+		for i := pr.From; i <= pr.To; i++ {
+			allPorts = append(allPorts, int32(i))
+		}
+	}
+	h.portMutex.Lock()
+	defer h.portMutex.Unlock()
+
+	for {
+		r := dice.Roll(len(allPorts))
+		port := net.Port(allPorts[r])
+		_, used := h.portsInUse[port]
+		if !used {
+			h.portsInUse[port] = struct{}{}
+			return port
+		}
+	}
+}
+
+func (h *DynamicInboundHandler) closeWorkers(workers []worker) {
+	ports2Del := make([]net.Port, len(workers))
+	for idx, worker := range workers {
+		ports2Del[idx] = worker.Port()
+		if err := worker.Close(); err != nil {
+			errors.LogInfoInner(h.ctx, err, "failed to close worker")
+		}
+	}
+
+	h.portMutex.Lock()
+	for _, port := range ports2Del {
+		delete(h.portsInUse, port)
+	}
+	h.portMutex.Unlock()
+}
+
+func (h *DynamicInboundHandler) refresh() error {
+	h.lastRefresh = time.Now()
+
+	timeout := time.Minute * time.Duration(h.receiverConfig.AllocationStrategy.GetRefreshValue()) * 2
+	concurrency := h.receiverConfig.AllocationStrategy.GetConcurrencyValue()
+	workers := make([]worker, 0, concurrency)
+
+	address := h.receiverConfig.Listen.AsAddress()
+	if address == nil {
+		address = net.AnyIP
+	}
+
+	uplinkCounter, downlinkCounter := getStatCounter(h.v, h.tag)
+
+	for i := uint32(0); i < concurrency; i++ {
+		port := h.allocatePort()
+		rawProxy, err := core.CreateObject(h.v, h.proxyConfig)
+		if err != nil {
+			errors.LogWarningInner(h.ctx, err, "failed to create proxy instance")
+			continue
+		}
+		p := rawProxy.(proxy.Inbound)
+		nl := p.Network()
+		if net.HasNetwork(nl, net.Network_TCP) {
+			worker := &tcpWorker{
+				tag:             h.tag,
+				address:         address,
+				port:            port,
+				proxy:           p,
+				stream:          h.streamSettings,
+				recvOrigDest:    h.receiverConfig.ReceiveOriginalDestination,
+				dispatcher:      h.mux,
+				sniffingConfig:  h.receiverConfig.GetEffectiveSniffingSettings(),
+				uplinkCounter:   uplinkCounter,
+				downlinkCounter: downlinkCounter,
+				ctx:             h.ctx,
+			}
+			if err := worker.Start(); err != nil {
+				errors.LogWarningInner(h.ctx, err, "failed to create TCP worker")
+				continue
+			}
+			workers = append(workers, worker)
+		}
+
+		if net.HasNetwork(nl, net.Network_UDP) {
+			worker := &udpWorker{
+				tag:             h.tag,
+				proxy:           p,
+				address:         address,
+				port:            port,
+				dispatcher:      h.mux,
+				sniffingConfig:  h.receiverConfig.GetEffectiveSniffingSettings(),
+				uplinkCounter:   uplinkCounter,
+				downlinkCounter: downlinkCounter,
+				stream:          h.streamSettings,
+				ctx:             h.ctx,
+			}
+			if err := worker.Start(); err != nil {
+				errors.LogWarningInner(h.ctx, err, "failed to create UDP worker")
+				continue
+			}
+			workers = append(workers, worker)
+		}
+	}
+
+	h.workerMutex.Lock()
+	h.worker = workers
+	h.workerMutex.Unlock()
+
+	time.AfterFunc(timeout, func() {
+		h.closeWorkers(workers)
+	})
+
+	return nil
+}
+
+func (h *DynamicInboundHandler) Start() error {
+	return h.task.Start()
+}
+
+func (h *DynamicInboundHandler) Close() error {
+	return h.task.Close()
+}
+
+func (h *DynamicInboundHandler) GetRandomInboundProxy() (interface{}, net.Port, int) {
+	h.workerMutex.RLock()
+	defer h.workerMutex.RUnlock()
+
+	if len(h.worker) == 0 {
+		return nil, 0, 0
+	}
+	w := h.worker[dice.Roll(len(h.worker))]
+	expire := h.receiverConfig.AllocationStrategy.GetRefreshValue() - uint32(time.Since(h.lastRefresh)/time.Minute)
+	return w.Proxy(), w.Port(), int(expire)
+}
+
+func (h *DynamicInboundHandler) Tag() string {
+	return h.tag
+}
+
+// ReceiverSettings implements inbound.Handler.
+func (h *DynamicInboundHandler) ReceiverSettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.receiverConfig)
+}
+
+// ProxySettings implements inbound.Handler.
+func (h *DynamicInboundHandler) ProxySettings() *serial.TypedMessage {
+	if v, ok := h.proxyConfig.(proto.Message); ok {
+		return serial.ToTypedMessage(v)
+	}
+	return nil
+}

app/proxyman/inbound/inbound.go

@@ -178,7 +178,15 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 		ctx = session.ContextWithAllowedNetwork(ctx, net.Network_UDP)
 	}
 
-	return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
+	allocStrategy := receiverSettings.AllocationStrategy
+	if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {
+		return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
+	}
+
+	if allocStrategy.Type == proxyman.AllocationStrategy_Random {
+		return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
+	}
+	return nil, errors.New("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
 }
 
 func init() {

app/proxyman/inbound/worker.go

@@ -2,7 +2,6 @@ package inbound
 
 import (
 	"context"
-	gonet "net"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -77,25 +76,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 		case internet.SocketConfig_TProxy:
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
-
 		if dest.IsValid() {
-			// Check if try to connect to this inbound itself (can cause loopback)
-			var isLoopBack bool
-			if w.address == net.AnyIP || w.address == net.AnyIPv6 {
-				if dest.Port.Value() == w.port.Value() && IsLocal(dest.Address.IP()) {
-					isLoopBack = true
-				}
-			} else {
-				if w.hub.Addr().String() == dest.NetAddr() {
-					isLoopBack = true
-				}
-			}
-			if isLoopBack {
-				cancel()
-				conn.Close()
-				errors.LogError(ctx, errors.New("loopback connection detected"))
-				return
-			}
 			outbounds[0].Target = dest
 		}
 	}
@@ -181,7 +162,6 @@ type udpConn struct {
 	uplink           stats.Counter
 	downlink         stats.Counter
 	inactive         bool
-	cancel           context.CancelFunc
 }
 
 func (c *udpConn) setInactive() {
@@ -224,9 +204,6 @@ func (c *udpConn) Write(buf []byte) (int, error) {
 }
 
 func (c *udpConn) Close() error {
-	if c.cancel != nil {
-		c.cancel()
-	}
 	common.Must(c.done.Close())
 	common.Must(common.Close(c.writer))
 	return nil
@@ -283,7 +260,6 @@ func (w *udpWorker) getConnection(id connID) (*udpConn, bool) {
 	defer w.Unlock()
 
 	if conn, found := w.activeConn[id]; found && !conn.done.Done() {
-		conn.updateActivity()
 		return conn, true
 	}
 
@@ -331,8 +307,7 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 		common.Must(w.checker.Start())
 
 		go func() {
-			ctx, cancel := context.WithCancel(w.ctx)
+			ctx := w.ctx
-			conn.cancel = cancel
 			sid := session.NewID()
 			ctx = c.ContextWithID(ctx, sid)
 
@@ -563,18 +538,3 @@ func (w *dsWorker) Close() error {
 
 	return nil
 }
-
-func IsLocal(ip net.IP) bool {
-	addrs, err := gonet.InterfaceAddrs()
-	if err != nil {
-		return false
-	}
-	for _, addr := range addrs {
-		if ipnet, ok := addr.(*gonet.IPNet); ok {
-			if ipnet.IP.Equal(ip) {
-				return true
-			}
-		}
-	}
-	return false
-}

app/proxyman/outbound/handler.go

@@ -108,8 +108,6 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 	}
 	h.proxyConfig = proxyConfig
 
-	ctx = session.ContextWithHandler(ctx, h)
-
 	rawProxyHandler, err := common.CreateObject(ctx, proxyConfig)
 	if err != nil {
 		return nil, err
@@ -241,10 +239,8 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 	}
 out:
 	err := h.proxy.Process(ctx, link, h)
-	var errC error
 	if err != nil {
-		errC = errors.Cause(err)
+		if goerrors.Is(err, io.EOF) || goerrors.Is(err, io.ErrClosedPipe) || goerrors.Is(err, context.Canceled) {
-		if goerrors.Is(errC, io.EOF) || goerrors.Is(errC, io.ErrClosedPipe) || goerrors.Is(errC, context.Canceled) {
 			err = nil
 		}
 	}
@@ -255,11 +251,7 @@ out:
 		errors.LogInfo(ctx, err.Error())
 		common.Interrupt(link.Writer)
 	} else {
-		if errC != nil && goerrors.Is(errC, io.ErrClosedPipe) {
+		common.Close(link.Writer)
-			common.Interrupt(link.Writer)
-		} else {
-			common.Close(link.Writer)
-		}
 	}
 	common.Interrupt(link.Reader)
 }

app/reverse/bridge.go

@@ -4,12 +4,10 @@ import (
 	"context"
 	"time"
 
-	"github.com/xtls/xray-core/app/dispatcher"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport"
@@ -54,11 +52,6 @@ func (b *Bridge) cleanup() {
 		if w.IsActive() {
 			activeWorkers = append(activeWorkers, w)
 		}
-		if w.Closed() {
-			if w.Timer != nil {
-				w.Timer.SetTimeout(0)
-			}
-		}
 	}
 
 	if len(activeWorkers) != len(b.workers) {
@@ -100,11 +93,10 @@ func (b *Bridge) Close() error {
 }
 
 type BridgeWorker struct {
-	Tag        string
+	tag        string
-	Worker     *mux.ServerWorker
+	worker     *mux.ServerWorker
-	Dispatcher routing.Dispatcher
+	dispatcher routing.Dispatcher
-	State      Control_State
+	state      Control_State
-	Timer      *signal.ActivityTimer
 }
 
 func NewBridgeWorker(domain string, tag string, d routing.Dispatcher) (*BridgeWorker, error) {
@@ -122,20 +114,16 @@ func NewBridgeWorker(domain string, tag string, d routing.Dispatcher) (*BridgeWo
 	}
 
 	w := &BridgeWorker{
-		Dispatcher: d,
+		dispatcher: d,
-		Tag:        tag,
+		tag:        tag,
 	}
 
 	worker, err := mux.NewServerWorker(context.Background(), w, link)
 	if err != nil {
 		return nil, err
 	}
-	w.Worker = worker
+	w.worker = worker
 
-	terminate := func() {
-		worker.Close()
-	}
-	w.Timer = signal.CancelAfterInactivity(ctx, terminate, 60*time.Second)
 	return w, nil
 }
 
@@ -152,63 +140,48 @@ func (w *BridgeWorker) Close() error {
 }
 
 func (w *BridgeWorker) IsActive() bool {
-	return w.State == Control_ACTIVE && !w.Worker.Closed()
+	return w.state == Control_ACTIVE && !w.worker.Closed()
-}
-
-func (w *BridgeWorker) Closed() bool {
-	return w.Worker.Closed()
 }
 
 func (w *BridgeWorker) Connections() uint32 {
-	return w.Worker.ActiveConnections()
+	return w.worker.ActiveConnections()
 }
 
 func (w *BridgeWorker) handleInternalConn(link *transport.Link) {
-	reader := link.Reader
+	go func() {
-	for {
+		reader := link.Reader
-		mb, err := reader.ReadMultiBuffer()
+		for {
-		if err != nil {
+			mb, err := reader.ReadMultiBuffer()
-			if w.Timer != nil {
+			if err != nil {
-				if w.Closed() {
+				break
-					w.Timer.SetTimeout(0)
+			}
-				} else {
+			for _, b := range mb {
-					w.Timer.SetTimeout(24 * time.Hour)
+				var ctl Control
+				if err := proto.Unmarshal(b.Bytes(), &ctl); err != nil {
+					errors.LogInfoInner(context.Background(), err, "failed to parse proto message")
+					break
+				}
+				if ctl.State != w.state {
+					w.state = ctl.State
 				}
 			}
-			return
 		}
-		if w.Timer != nil {
+	}()
-			w.Timer.Update()
-		}
-		for _, b := range mb {
-			var ctl Control
-			if err := proto.Unmarshal(b.Bytes(), &ctl); err != nil {
-				errors.LogInfoInner(context.Background(), err, "failed to parse proto message")
-				if w.Timer != nil {
-					w.Timer.SetTimeout(0)
-				}
-				return
-			}
-			if ctl.State != w.State {
-				w.State = ctl.State
-			}
-		}
-	}
 }
 
 func (w *BridgeWorker) Dispatch(ctx context.Context, dest net.Destination) (*transport.Link, error) {
 	if !isInternalDomain(dest) {
 		ctx = session.ContextWithInbound(ctx, &session.Inbound{
-			Tag: w.Tag,
+			Tag: w.tag,
 		})
-		return w.Dispatcher.Dispatch(ctx, dest)
+		return w.dispatcher.Dispatch(ctx, dest)
 	}
 
 	opt := []pipe.Option{pipe.WithSizeLimit(16 * 1024)}
 	uplinkReader, uplinkWriter := pipe.New(opt...)
 	downlinkReader, downlinkWriter := pipe.New(opt...)
 
-	go w.handleInternalConn(&transport.Link{
+	w.handleInternalConn(&transport.Link{
 		Reader: downlinkReader,
 		Writer: uplinkWriter,
 	})
@@ -222,12 +195,11 @@ func (w *BridgeWorker) Dispatch(ctx context.Context, dest net.Destination) (*tra
 func (w *BridgeWorker) DispatchLink(ctx context.Context, dest net.Destination, link *transport.Link) error {
 	if !isInternalDomain(dest) {
 		ctx = session.ContextWithInbound(ctx, &session.Inbound{
-			Tag: w.Tag,
+			Tag: w.tag,
 		})
-		return w.Dispatcher.DispatchLink(ctx, dest, link)
+		return w.dispatcher.DispatchLink(ctx, dest, link)
 	}
 
-	link = w.Dispatcher.(*dispatcher.DefaultDispatcher).WrapLink(ctx, link)
 	w.handleInternalConn(link)
 
 	return nil

app/reverse/portal.go

@@ -12,7 +12,6 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/transport"
@@ -72,14 +71,7 @@ func (p *Portal) HandleConnection(ctx context.Context, link *transport.Link) err
 	}
 
 	if isDomain(ob.Target, p.domain) {
-		opts := pipe.OptionsFromContext(ctx)
+		muxClient, err := mux.NewClientWorker(*link, mux.ClientStrategy{})
-		uplinkReader, uplinkWriter := pipe.New(opts...)
-		downlinkReader, downlinkWriter := pipe.New(opts...)
-		
-		muxClient, err := mux.NewClientWorker(transport.Link{
-			Reader: uplinkReader,
-			Writer: downlinkWriter,
-		}, mux.ClientStrategy{})
 		if err != nil {
 			return errors.New("failed to create mux client worker").Base(err).AtWarning()
 		}
@@ -90,34 +82,9 @@ func (p *Portal) HandleConnection(ctx context.Context, link *transport.Link) err
 		}
 
 		p.picker.AddWorker(worker)
-
-		inboundLink := &transport.Link{Reader: downlinkReader, Writer: uplinkWriter} 
-		requestDone := func() error {
-			if err := buf.Copy(link.Reader, inboundLink.Writer); err != nil {
-				return errors.New("failed to transfer request").Base(err)
-			}
-			return nil
-		}
-		responseDone := func() error {
-			if err := buf.Copy(inboundLink.Reader, link.Writer); err != nil {
-				return err
-			}
-			return nil
-		}
-		requestDonePost := task.OnSuccess(requestDone, task.Close(inboundLink.Writer))
-		if err := task.Run(ctx, requestDonePost, responseDone); err != nil {
-			common.Interrupt(inboundLink.Reader)
-			common.Interrupt(inboundLink.Writer)
-			return errors.New("connection ends").Base(err)
-		}
 		return nil
 	}
 
-	if ob.Target.Network == net.Network_UDP && ob.OriginalTarget.Address != nil && ob.OriginalTarget.Address != ob.Target.Address {
-		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
-		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
-	}
-
 	return p.client.Dispatch(ctx, link)
 }
 
@@ -134,7 +101,6 @@ func (o *Outbound) Dispatch(ctx context.Context, link *transport.Link) {
 	if err := o.portal.HandleConnection(ctx, link); err != nil {
 		errors.LogInfoInner(ctx, err, "failed to process reverse connection")
 		common.Interrupt(link.Writer)
-		common.Interrupt(link.Reader)
 	}
 }
 
@@ -180,8 +146,6 @@ func (p *StaticMuxPicker) cleanup() error {
 	for _, w := range p.workers {
 		if !w.Closed() {
 			activeWorkers = append(activeWorkers, w)
-		} else {
-			w.timer.SetTimeout(0)
 		}
 	}
 
@@ -248,7 +212,6 @@ type PortalWorker struct {
 	reader   buf.Reader
 	draining bool
 	counter  uint32
-	timer    *signal.ActivityTimer
 }
 
 func NewPortalWorker(client *mux.ClientWorker) (*PortalWorker, error) {
@@ -268,14 +231,10 @@ func NewPortalWorker(client *mux.ClientWorker) (*PortalWorker, error) {
 	if !f {
 		return nil, errors.New("unable to dispatch control connection")
 	}
-	terminate := func() {
-		client.Close()
-	}
 	w := &PortalWorker{
 		client: client,
 		reader: downlinkReader,
 		writer: uplinkWriter,
-		timer:  signal.CancelAfterInactivity(ctx, terminate, 24*time.Hour), // // prevent leak
 	}
 	w.control = &task.Periodic{
 		Execute:  w.heartbeat,
@@ -302,6 +261,7 @@ func (w *PortalWorker) heartbeat() error {
 		msg.State = Control_DRAIN
 
 		defer func() {
+			w.client.GetTimer().Reset(time.Second * 16)
 			common.Close(w.writer)
 			common.Interrupt(w.reader)
 			w.writer = nil
@@ -313,7 +273,6 @@ func (w *PortalWorker) heartbeat() error {
 		b, err := proto.Marshal(msg)
 		common.Must(err)
 		mb := buf.MergeBytes(nil, b)
-		w.timer.Update()
 		return w.writer.WriteMultiBuffer(mb)
 	}
 	return nil

app/reverse/reverse.go

@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	internalDomain = "reverse"
+	internalDomain = "reverse.internal.v2fly.org" // make reverse proxy compatible with v2fly
 )
 
 func isDomain(dest net.Destination, domain string) bool {

common/buf/buffer.go

@@ -15,6 +15,8 @@ const (
 
 var ErrBufferFull = errors.New("buffer is full")
 
+var zero = [Size * 10]byte{0}
+
 var pool = bytespool.GetPool(Size)
 
 // ownership represents the data owner of the buffer.
@@ -144,7 +146,7 @@ func (b *Buffer) Bytes() []byte {
 }
 
 // Extend increases the buffer size by n bytes, and returns the extended part.
-// It panics if result size is larger than size of this buffer.
+// It panics if result size is larger than buf.Size.
 func (b *Buffer) Extend(n int32) []byte {
 	end := b.end + n
 	if end > int32(len(b.v)) {
@@ -152,7 +154,7 @@ func (b *Buffer) Extend(n int32) []byte {
 	}
 	ext := b.v[b.end:end]
 	b.end = end
-	clear(ext)
+	copy(ext, zero[:])
 	return ext
 }
 
@@ -215,7 +217,7 @@ func (b *Buffer) Resize(from, to int32) {
 	b.start += from
 	b.Check()
 	if b.end > oldEnd {
-		clear(b.v[oldEnd:b.end])
+		copy(b.v[oldEnd:b.end], zero[:])
 	}
 }
 

common/buf/io.go

@@ -24,59 +24,9 @@ var ErrReadTimeout = errors.New("IO timeout")
 
 // TimeoutReader is a reader that returns error if Read() operation takes longer than the given timeout.
 type TimeoutReader interface {
-	Reader
 	ReadMultiBufferTimeout(time.Duration) (MultiBuffer, error)
 }
 
-type TimeoutWrapperReader struct {
-	Reader
-	stats.Counter
-	mb   MultiBuffer
-	err  error
-	done chan struct{}
-}
-
-func (r *TimeoutWrapperReader) ReadMultiBuffer() (MultiBuffer, error) {
-	if r.done != nil {
-		<-r.done
-		r.done = nil
-		if r.Counter != nil {
-			r.Counter.Add(int64(r.mb.Len()))
-		}
-		return r.mb, r.err
-	}
-	r.mb, r.err = r.Reader.ReadMultiBuffer()
-	if r.Counter != nil {
-		r.Counter.Add(int64(r.mb.Len()))
-	}
-	return r.mb, r.err
-}
-
-func (r *TimeoutWrapperReader) ReadMultiBufferTimeout(duration time.Duration) (MultiBuffer, error) {
-	if r.done == nil {
-		r.done = make(chan struct{})
-		go func() {
-			r.mb, r.err = r.Reader.ReadMultiBuffer()
-			close(r.done)
-		}()
-	}
-	timeout := make(chan struct{})
-	go func() {
-		time.Sleep(duration)
-		close(timeout)
-	}()
-	select {
-	case <-r.done:
-		r.done = nil
-		if r.Counter != nil {
-			r.Counter.Add(int64(r.mb.Len()))
-		}
-		return r.mb, r.err
-	case <-timeout:
-		return nil, nil
-	}
-}
-
 // Writer extends io.Writer with MultiBuffer.
 type Writer interface {
 	// WriteMultiBuffer writes a MultiBuffer into underlying writer.

common/buf/writer.go

@@ -75,10 +75,9 @@ func (w *BufferToBytesWriter) ReadFrom(reader io.Reader) (int64, error) {
 // BufferedWriter is a Writer with internal buffer.
 type BufferedWriter struct {
 	sync.Mutex
-	writer    Writer
+	writer   Writer
-	buffer    *Buffer
+	buffer   *Buffer
-	buffered  bool
+	buffered bool
-	flushNext bool
 }
 
 // NewBufferedWriter creates a new BufferedWriter.
@@ -162,12 +161,6 @@ func (w *BufferedWriter) WriteMultiBuffer(b MultiBuffer) error {
 		}
 	}
 
-	if w.flushNext {
-		w.buffered = false
-		w.flushNext = false
-		return w.flushInternal()
-	}
-
 	return nil
 }
 
@@ -208,13 +201,6 @@ func (w *BufferedWriter) SetBuffered(f bool) error {
 	return nil
 }
 
-// SetFlushNext will wait the next WriteMultiBuffer to flush and set buffered = false
-func (w *BufferedWriter) SetFlushNext() {
-	w.Lock()
-	defer w.Unlock()
-	w.flushNext = true
-}
-
 // ReadFrom implements io.ReaderFrom.
 func (w *BufferedWriter) ReadFrom(reader io.Reader) (int64, error) {
 	if err := w.SetBuffered(false); err != nil {

common/common.go

@@ -7,7 +7,6 @@ import (
 	"go/build"
 	"os"
 	"path/filepath"
-	"reflect"
 	"strings"
 
 	"github.com/xtls/xray-core/common/errors"
@@ -154,14 +153,3 @@ func GetModuleName(pathToProjectRoot string) (string, error) {
 	}
 	return moduleName, fmt.Errorf("no `go.mod` file in every parent directory of `%s`", pathToProjectRoot)
 }
-
-// CloseIfExists call obj.Close() if obj is not nil.
-func CloseIfExists(obj any) error {
-	if obj != nil {
-		v := reflect.ValueOf(obj)
-		if !v.IsNil() {
-			return Close(obj)
-		}
-	}
-	return nil
-}

common/crypto/crypto.go

@@ -10,9 +10,6 @@ func RandBetween(from int64, to int64) int64 {
 	if from == to {
 		return from
 	}
-	if from > to {
-		from, to = to, from
-	}
 	bigInt, _ := rand.Int(rand.Reader, big.NewInt(to-from))
 	return from + bigInt.Int64()
 }

common/mux/client.go

@@ -2,7 +2,6 @@ package mux
 
 import (
 	"context"
-	goerrors "errors"
 	"io"
 	"sync"
 	"time"
@@ -155,11 +154,8 @@ func (f *DialingWorkerFactory) Create() (*ClientWorker, error) {
 		ctx := session.ContextWithOutbounds(context.Background(), outbounds)
 		ctx, cancel := context.WithCancel(ctx)
 
-		if errP := p.Process(ctx, &transport.Link{Reader: uplinkReader, Writer: downlinkWriter}, d); errP != nil {
+		if err := p.Process(ctx, &transport.Link{Reader: uplinkReader, Writer: downlinkWriter}, d); err != nil {
-			errC := errors.Cause(errP)
+			errors.LogInfoInner(ctx, err, "failed to handler mux client connection")
-			if !(goerrors.Is(errC, io.EOF) || goerrors.Is(errC, io.ErrClosedPipe) || goerrors.Is(errC, context.Canceled)) {
-				errors.LogInfoInner(ctx, errP, "failed to handler mux client connection")
-			}
 		}
 		common.Must(c.Close())
 		cancel()
@@ -215,28 +211,23 @@ func (m *ClientWorker) Closed() bool {
 	return m.done.Done()
 }
 
-func (m *ClientWorker) WaitClosed() <-chan struct{} {
+func (m *ClientWorker) GetTimer() *time.Ticker {
-	return m.done.Wait()
+	return m.timer
-}
-
-func (m *ClientWorker) Close() error {
-	return m.done.Close()
 }
 
 func (m *ClientWorker) monitor() {
 	defer m.timer.Stop()
 
 	for {
-		checkSize := m.sessionManager.Size()
-		checkCount := m.sessionManager.Count()
 		select {
 		case <-m.done.Wait():
 			m.sessionManager.Close()
-			common.Interrupt(m.link.Writer)
+			common.Close(m.link.Writer)
 			common.Interrupt(m.link.Reader)
 			return
 		case <-m.timer.C:
-			if m.sessionManager.CloseIfNoSessionAndIdle(checkSize, checkCount) {
+			size := m.sessionManager.Size()
+			if size == 0 && m.sessionManager.CloseIfNoSession() {
 				common.Must(m.done.Close())
 			}
 		}
@@ -317,12 +308,6 @@ func (m *ClientWorker) Dispatch(ctx context.Context, link *transport.Link) bool
 	s.input = link.Reader
 	s.output = link.Writer
 	go fetchInput(ctx, s, m.link.Writer)
-	if _, ok := link.Reader.(*pipe.Reader); !ok {
-		select {
-		case <-ctx.Done():
-		case <-s.done.Wait():
-		}
-	}
 	return true
 }
 

common/mux/server.go

@@ -3,7 +3,6 @@ package mux
 import (
 	"context"
 	"io"
-	"time"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
@@ -12,11 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
-	//"github.com/xtls/xray-core/common/signal"
-	"github.com/xtls/xray-core/common/signal/done"
-	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
-	//"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
@@ -66,45 +61,8 @@ func (s *Server) DispatchLink(ctx context.Context, dest net.Destination, link *t
 	if dest.Address != muxCoolAddress {
 		return s.dispatcher.DispatchLink(ctx, dest, link)
 	}
-
+	_, err := NewServerWorker(ctx, s.dispatcher, link)
-	// For Mux, we need to use pipe to guard against multiple sub-connections writing back responses at the same time
+	return err
-	// sessionPolicy = h.policyManager.ForLevel(request.User.Level)
-	// ctx, cancel := context.WithCancel(ctx)
-	// timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
-	// ctx = policy.ContextWithBufferPolicy(ctx, sessionPolicy.Buffer)
-	opts := pipe.OptionsFromContext(ctx)
-	uplinkReader, uplinkWriter := pipe.New(opts...)
-	downlinkReader, downlinkWriter := pipe.New(opts...)
-
-	_, err := NewServerWorker(ctx, s.dispatcher, &transport.Link{
-		Reader: uplinkReader,
-		Writer: downlinkWriter,
-	})
-	if err != nil {
-		return err
-	}
-	inboundLink := &transport.Link{Reader: downlinkReader, Writer: uplinkWriter} 
-	requestDone := func() error {
-		//defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
-		if err := buf.Copy(link.Reader, inboundLink.Writer); err != nil {
-			return errors.New("failed to transfer request").Base(err)
-		}
-		return nil
-	}
-	responseDone := func() error {
-		//defer timer.SetTimeout(sessionPolicy.Timeouts.UplinkOnly)
-		if err := buf.Copy(inboundLink.Reader, link.Writer); err != nil {
-			return err
-		}
-		return nil
-	}
-	requestDonePost := task.OnSuccess(requestDone, task.Close(inboundLink.Writer))
-	if err := task.Run(ctx, requestDonePost, responseDone); err != nil {
-		common.Interrupt(inboundLink.Reader)
-		common.Interrupt(inboundLink.Writer)
-		return errors.New("connection ends").Base(err)
-	}
-	return nil
 }
 
 // Start implements common.Runnable.
@@ -121,8 +79,6 @@ type ServerWorker struct {
 	dispatcher     routing.Dispatcher
 	link           *transport.Link
 	sessionManager *SessionManager
-	done           *done.Instance
-	timer          *time.Ticker
 }
 
 func NewServerWorker(ctx context.Context, d routing.Dispatcher, link *transport.Link) (*ServerWorker, error) {
@@ -130,14 +86,8 @@ func NewServerWorker(ctx context.Context, d routing.Dispatcher, link *transport.
 		dispatcher:     d,
 		link:           link,
 		sessionManager: NewSessionManager(),
-		done:           done.New(),
-		timer:          time.NewTicker(60 * time.Second),
-	}
-	if inbound := session.InboundFromContext(ctx); inbound != nil {
-		inbound.CanSpliceCopy = 3
 	}
 	go worker.run(ctx)
-	go worker.monitor()
 	return worker, nil
 }
 
@@ -152,40 +102,12 @@ func handle(ctx context.Context, s *Session, output buf.Writer) {
 	s.Close(false)
 }
 
-func (w *ServerWorker) monitor() {
-	defer w.timer.Stop()
-
-	for {
-		checkSize := w.sessionManager.Size()
-		checkCount := w.sessionManager.Count()
-		select {
-		case <-w.done.Wait():
-			w.sessionManager.Close()
-			common.Interrupt(w.link.Writer)
-			common.Interrupt(w.link.Reader)
-			return
-		case <-w.timer.C:
-			if w.sessionManager.CloseIfNoSessionAndIdle(checkSize, checkCount) {
-				common.Must(w.done.Close())
-			}
-		}
-	}
-}
-
 func (w *ServerWorker) ActiveConnections() uint32 {
 	return uint32(w.sessionManager.Size())
 }
 
 func (w *ServerWorker) Closed() bool {
-	return w.done.Done()
+	return w.sessionManager.Closed()
-}
-
-func (w *ServerWorker) WaitClosed() <-chan struct{} {
-	return w.done.Wait()
-}
-
-func (w *ServerWorker) Close() error {
-	return w.done.Close()
 }
 
 func (w *ServerWorker) handleStatusKeepAlive(meta *FrameMetadata, reader *buf.BufferedReader) error {
@@ -386,12 +308,12 @@ func (w *ServerWorker) handleFrame(ctx context.Context, reader *buf.BufferedRead
 }
 
 func (w *ServerWorker) run(ctx context.Context) {
-	defer func() {
-		common.Must(w.done.Close())
-	}()
-
 	reader := &buf.BufferedReader{Reader: w.link.Reader}
 
+	defer w.sessionManager.Close()
+	defer common.Close(w.link.Writer)
+	defer common.Interrupt(w.link.Reader)
+
 	for {
 		select {
 		case <-ctx.Done():

common/mux/session.go

@@ -12,7 +12,6 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
-	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/transport/pipe"
 )
 
@@ -54,7 +53,7 @@ func (m *SessionManager) Count() int {
 func (m *SessionManager) Allocate(Strategy *ClientStrategy) *Session {
 	m.Lock()
 	defer m.Unlock()
-
+	
 	MaxConcurrency := int(Strategy.MaxConcurrency)
 	MaxConnection := uint16(Strategy.MaxConnection)
 
@@ -66,7 +65,6 @@ func (m *SessionManager) Allocate(Strategy *ClientStrategy) *Session {
 	s := &Session{
 		ID:     m.count,
 		parent: m,
-		done:   done.New(),
 	}
 	m.sessions[s.ID] = s
 	return s
@@ -117,7 +115,7 @@ func (m *SessionManager) Get(id uint16) (*Session, bool) {
 	return s, found
 }
 
-func (m *SessionManager) CloseIfNoSessionAndIdle(checkSize int, checkCount int) bool {
+func (m *SessionManager) CloseIfNoSession() bool {
 	m.Lock()
 	defer m.Unlock()
 
@@ -125,13 +123,11 @@ func (m *SessionManager) CloseIfNoSessionAndIdle(checkSize int, checkCount int)
 		return true
 	}
 
-	if len(m.sessions) != 0 || checkSize != 0 || checkCount != int(m.count) {
+	if len(m.sessions) != 0 {
 		return false
 	}
 
 	m.closed = true
-
-	m.sessions = nil
 	return true
 }
 
@@ -161,7 +157,6 @@ type Session struct {
 	ID           uint16
 	transferType protocol.TransferType
 	closed       bool
-	done         *done.Instance
 	XUDP         *XUDP
 }
 
@@ -176,9 +171,6 @@ func (s *Session) Close(locked bool) error {
 		return nil
 	}
 	s.closed = true
-	if s.done != nil {
-		s.done.Close()
-	}
 	if s.XUDP == nil {
 		common.Interrupt(s.input)
 		common.Close(s.output)

common/mux/session_test.go

@@ -41,11 +41,11 @@ func TestSessionManagerClose(t *testing.T) {
 	m := NewSessionManager()
 	s := m.Allocate(&ClientStrategy{})
 
-	if m.CloseIfNoSessionAndIdle(m.Size(), m.Count()) {
+	if m.CloseIfNoSession() {
 		t.Error("able to close")
 	}
 	m.Remove(false, s.ID)
-	if !m.CloseIfNoSessionAndIdle(m.Size(), m.Count()) {
+	if !m.CloseIfNoSession() {
 		t.Error("not able to close")
 	}
 }

common/protocol/headers.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/xtls/xray-core/common/bitmask"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/uuid"
 	"golang.org/x/sys/cpu"
 )
 
@@ -15,12 +16,11 @@ const (
 	RequestCommandTCP = RequestCommand(0x01)
 	RequestCommandUDP = RequestCommand(0x02)
 	RequestCommandMux = RequestCommand(0x03)
-	RequestCommandRvs = RequestCommand(0x04)
 )
 
 func (c RequestCommand) TransferType() TransferType {
 	switch c {
-	case RequestCommandTCP, RequestCommandMux, RequestCommandRvs:
+	case RequestCommandTCP, RequestCommandMux:
 		return TransferTypeStream
 	case RequestCommandUDP:
 		return TransferTypePacket
@@ -70,19 +70,29 @@ type ResponseHeader struct {
 	Command ResponseCommand
 }
 
-var (
+type CommandSwitchAccount struct {
-	// Keep in sync with crypto/tls/cipher_suites.go.
+	Host     net.Address
-	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ && cpu.X86.HasSSE41 && cpu.X86.HasSSSE3
+	Port     net.Port
-	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
+	ID       uuid.UUID
-	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCTR && cpu.S390X.HasGHASH
+	Level    uint32
-	hasGCMAsmPPC64 = runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le"
+	ValidMin byte
+}
 
-	HasAESGCMHardwareSupport = hasGCMAsmAMD64 || hasGCMAsmARM64 || hasGCMAsmS390X || hasGCMAsmPPC64
+var (
+	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
+	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
+	// Keep in sync with crypto/aes/cipher_s390x.go.
+	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
+		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
+
+	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
+		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
+		runtime.GOARCH == "s390x" && hasGCMAsmS390X
 )
 
 func (sc *SecurityConfig) GetSecurityType() SecurityType {
 	if sc == nil || sc.Type == SecurityType_AUTO {
-		if HasAESGCMHardwareSupport {
+		if hasAESGCMHardwareSupport {
 			return SecurityType_AES128_GCM
 		}
 		return SecurityType_CHACHA20_POLY1305

common/protocol/server_picker.go

@@ -0,0 +1,89 @@
+package protocol
+
+import (
+	"sync"
+)
+
+type ServerList struct {
+	sync.RWMutex
+	servers []*ServerSpec
+}
+
+func NewServerList() *ServerList {
+	return &ServerList{}
+}
+
+func (sl *ServerList) AddServer(server *ServerSpec) {
+	sl.Lock()
+	defer sl.Unlock()
+
+	sl.servers = append(sl.servers, server)
+}
+
+func (sl *ServerList) Size() uint32 {
+	sl.RLock()
+	defer sl.RUnlock()
+
+	return uint32(len(sl.servers))
+}
+
+func (sl *ServerList) GetServer(idx uint32) *ServerSpec {
+	sl.Lock()
+	defer sl.Unlock()
+
+	for {
+		if idx >= uint32(len(sl.servers)) {
+			return nil
+		}
+
+		server := sl.servers[idx]
+		if !server.IsValid() {
+			sl.removeServer(idx)
+			continue
+		}
+
+		return server
+	}
+}
+
+func (sl *ServerList) removeServer(idx uint32) {
+	n := len(sl.servers)
+	sl.servers[idx] = sl.servers[n-1]
+	sl.servers = sl.servers[:n-1]
+}
+
+type ServerPicker interface {
+	PickServer() *ServerSpec
+}
+
+type RoundRobinServerPicker struct {
+	sync.Mutex
+	serverlist *ServerList
+	nextIndex  uint32
+}
+
+func NewRoundRobinServerPicker(serverlist *ServerList) *RoundRobinServerPicker {
+	return &RoundRobinServerPicker{
+		serverlist: serverlist,
+		nextIndex:  0,
+	}
+}
+
+func (p *RoundRobinServerPicker) PickServer() *ServerSpec {
+	p.Lock()
+	defer p.Unlock()
+
+	next := p.nextIndex
+	server := p.serverlist.GetServer(next)
+	if server == nil {
+		next = 0
+		server = p.serverlist.GetServer(0)
+	}
+	next++
+	if next >= p.serverlist.Size() {
+		next = 0
+	}
+	p.nextIndex = next
+
+	return server
+}

common/protocol/server_picker_test.go

@@ -0,0 +1,71 @@
+package protocol_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/xtls/xray-core/common/net"
+	. "github.com/xtls/xray-core/common/protocol"
+)
+
+func TestServerList(t *testing.T) {
+	list := NewServerList()
+	list.AddServer(NewServerSpec(net.TCPDestination(net.LocalHostIP, net.Port(1)), AlwaysValid()))
+	if list.Size() != 1 {
+		t.Error("list size: ", list.Size())
+	}
+	list.AddServer(NewServerSpec(net.TCPDestination(net.LocalHostIP, net.Port(2)), BeforeTime(time.Now().Add(time.Second))))
+	if list.Size() != 2 {
+		t.Error("list.size: ", list.Size())
+	}
+
+	server := list.GetServer(1)
+	if server.Destination().Port != 2 {
+		t.Error("server: ", server.Destination())
+	}
+	time.Sleep(2 * time.Second)
+	server = list.GetServer(1)
+	if server != nil {
+		t.Error("server: ", server)
+	}
+
+	server = list.GetServer(0)
+	if server.Destination().Port != 1 {
+		t.Error("server: ", server.Destination())
+	}
+}
+
+func TestServerPicker(t *testing.T) {
+	list := NewServerList()
+	list.AddServer(NewServerSpec(net.TCPDestination(net.LocalHostIP, net.Port(1)), AlwaysValid()))
+	list.AddServer(NewServerSpec(net.TCPDestination(net.LocalHostIP, net.Port(2)), BeforeTime(time.Now().Add(time.Second))))
+	list.AddServer(NewServerSpec(net.TCPDestination(net.LocalHostIP, net.Port(3)), BeforeTime(time.Now().Add(time.Second))))
+
+	picker := NewRoundRobinServerPicker(list)
+	server := picker.PickServer()
+	if server.Destination().Port != 1 {
+		t.Error("server: ", server.Destination())
+	}
+	server = picker.PickServer()
+	if server.Destination().Port != 2 {
+		t.Error("server: ", server.Destination())
+	}
+	server = picker.PickServer()
+	if server.Destination().Port != 3 {
+		t.Error("server: ", server.Destination())
+	}
+	server = picker.PickServer()
+	if server.Destination().Port != 1 {
+		t.Error("server: ", server.Destination())
+	}
+
+	time.Sleep(2 * time.Second)
+	server = picker.PickServer()
+	if server.Destination().Port != 1 {
+		t.Error("server: ", server.Destination())
+	}
+	server = picker.PickServer()
+	if server.Destination().Port != 1 {
+		t.Error("server: ", server.Destination())
+	}
+}

common/protocol/server_spec.go

@@ -1,30 +1,122 @@
 package protocol
 
 import (
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/common/net"
 )
 
-type ServerSpec struct {
+type ValidationStrategy interface {
-	Destination  net.Destination
+	IsValid() bool
-	User         *MemoryUser
+	Invalidate()
 }
 
-func NewServerSpec(dest net.Destination, user *MemoryUser) *ServerSpec {
+type alwaysValidStrategy struct{}
+
+func AlwaysValid() ValidationStrategy {
+	return alwaysValidStrategy{}
+}
+
+func (alwaysValidStrategy) IsValid() bool {
+	return true
+}
+
+func (alwaysValidStrategy) Invalidate() {}
+
+type timeoutValidStrategy struct {
+	until time.Time
+}
+
+func BeforeTime(t time.Time) ValidationStrategy {
+	return &timeoutValidStrategy{
+		until: t,
+	}
+}
+
+func (s *timeoutValidStrategy) IsValid() bool {
+	return s.until.After(time.Now())
+}
+
+func (s *timeoutValidStrategy) Invalidate() {
+	s.until = time.Time{}
+}
+
+type ServerSpec struct {
+	sync.RWMutex
+	dest  net.Destination
+	users []*MemoryUser
+	valid ValidationStrategy
+}
+
+func NewServerSpec(dest net.Destination, valid ValidationStrategy, users ...*MemoryUser) *ServerSpec {
 	return &ServerSpec{
-		Destination: dest,
+		dest:  dest,
-		User:        user,
+		users: users,
+		valid: valid,
 	}
 }
 
 func NewServerSpecFromPB(spec *ServerEndpoint) (*ServerSpec, error) {
 	dest := net.TCPDestination(spec.Address.AsAddress(), net.Port(spec.Port))
-	var dUser *MemoryUser
+	mUsers := make([]*MemoryUser, len(spec.User))
-	if spec.User != nil {
+	for idx, u := range spec.User {
-		user, err := spec.User.ToMemoryUser()
+		mUser, err := u.ToMemoryUser()
 		if err != nil {
 			return nil, err
 		}
-		dUser = user
+		mUsers[idx] = mUser
 	}
-	return NewServerSpec(dest, dUser), nil
+	return NewServerSpec(dest, AlwaysValid(), mUsers...), nil
+}
+
+func (s *ServerSpec) Destination() net.Destination {
+	return s.dest
+}
+
+func (s *ServerSpec) HasUser(user *MemoryUser) bool {
+	s.RLock()
+	defer s.RUnlock()
+
+	for _, u := range s.users {
+		if u.Account.Equals(user.Account) {
+			return true
+		}
+	}
+	return false
+}
+
+func (s *ServerSpec) AddUser(user *MemoryUser) {
+	if s.HasUser(user) {
+		return
+	}
+
+	s.Lock()
+	defer s.Unlock()
+
+	s.users = append(s.users, user)
+}
+
+func (s *ServerSpec) PickUser() *MemoryUser {
+	s.RLock()
+	defer s.RUnlock()
+
+	userCount := len(s.users)
+	switch userCount {
+	case 0:
+		return nil
+	case 1:
+		return s.users[0]
+	default:
+		return s.users[dice.Roll(userCount)]
+	}
+}
+
+func (s *ServerSpec) IsValid() bool {
+	return s.valid.IsValid()
+}
+
+func (s *ServerSpec) Invalidate() {
+	s.valid.Invalidate()
 }

common/protocol/server_spec.pb.go

@@ -28,7 +28,7 @@ type ServerEndpoint struct {
 
 	Address *net.IPOrDomain `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
 	Port    uint32          `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
-	User    *User           `protobuf:"bytes,3,opt,name=user,proto3" json:"user,omitempty"`
+	User    []*User         `protobuf:"bytes,3,rep,name=user,proto3" json:"user,omitempty"`
 }
 
 func (x *ServerEndpoint) Reset() {
@@ -75,7 +75,7 @@ func (x *ServerEndpoint) GetPort() uint32 {
 	return 0
 }
 
-func (x *ServerEndpoint) GetUser() *User {
+func (x *ServerEndpoint) GetUser() []*User {
 	if x != nil {
 		return x.User
 	}
@@ -98,7 +98,7 @@ var file_common_protocol_server_spec_proto_rawDesc = []byte{
 	0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
 	0x52, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x70, 0x6f, 0x72,
 	0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x04, 0x70, 0x6f, 0x72, 0x74, 0x12, 0x2e, 0x0a,
-	0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78, 0x72,
+	0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78, 0x72,
 	0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63,
 	0x6f, 0x6c, 0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x04, 0x75, 0x73, 0x65, 0x72, 0x42, 0x5e, 0x0a,
 	0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,

common/protocol/server_spec.proto

@@ -12,5 +12,5 @@ import "common/protocol/user.proto";
 message ServerEndpoint {
   xray.common.net.IPOrDomain address = 1;
   uint32 port = 2;
-  xray.common.protocol.User user = 3;
+  repeated xray.common.protocol.User user = 3;
 }

common/protocol/server_spec_test.go

@@ -0,0 +1,79 @@
+package protocol_test
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/net"
+	. "github.com/xtls/xray-core/common/protocol"
+	"github.com/xtls/xray-core/common/uuid"
+	"github.com/xtls/xray-core/proxy/vmess"
+)
+
+func TestAlwaysValidStrategy(t *testing.T) {
+	strategy := AlwaysValid()
+	if !strategy.IsValid() {
+		t.Error("strategy not valid")
+	}
+	strategy.Invalidate()
+	if !strategy.IsValid() {
+		t.Error("strategy not valid")
+	}
+}
+
+func TestTimeoutValidStrategy(t *testing.T) {
+	strategy := BeforeTime(time.Now().Add(2 * time.Second))
+	if !strategy.IsValid() {
+		t.Error("strategy not valid")
+	}
+	time.Sleep(3 * time.Second)
+	if strategy.IsValid() {
+		t.Error("strategy is valid")
+	}
+
+	strategy = BeforeTime(time.Now().Add(2 * time.Second))
+	strategy.Invalidate()
+	if strategy.IsValid() {
+		t.Error("strategy is valid")
+	}
+}
+
+func TestUserInServerSpec(t *testing.T) {
+	uuid1 := uuid.New()
+	uuid2 := uuid.New()
+
+	toAccount := func(a *vmess.Account) Account {
+		account, err := a.AsAccount()
+		common.Must(err)
+		return account
+	}
+
+	spec := NewServerSpec(net.Destination{}, AlwaysValid(), &MemoryUser{
+		Email:   "test1@example.com",
+		Account: toAccount(&vmess.Account{Id: uuid1.String()}),
+	})
+	if spec.HasUser(&MemoryUser{
+		Email:   "test1@example.com",
+		Account: toAccount(&vmess.Account{Id: uuid2.String()}),
+	}) {
+		t.Error("has user: ", uuid2)
+	}
+
+	spec.AddUser(&MemoryUser{Email: "test2@example.com"})
+	if !spec.HasUser(&MemoryUser{
+		Email:   "test1@example.com",
+		Account: toAccount(&vmess.Account{Id: uuid1.String()}),
+	}) {
+		t.Error("not having user: ", uuid1)
+	}
+}
+
+func TestPickUser(t *testing.T) {
+	spec := NewServerSpec(net.Destination{}, AlwaysValid(), &MemoryUser{Email: "test1@example.com"}, &MemoryUser{Email: "test2@example.com"}, &MemoryUser{Email: "test3@example.com"})
+	user := spec.PickUser()
+	if !strings.HasSuffix(user.Email, "@example.com") {
+		t.Error("user: ", user.Email)
+	}
+}

common/session/context.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/xtls/xray-core/common/ctx"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/routing"
 )
 
@@ -17,13 +16,13 @@ const (
 	inboundSessionKey         ctx.SessionKey = 1
 	outboundSessionKey        ctx.SessionKey = 2
 	contentSessionKey         ctx.SessionKey = 3
-	muxPreferredSessionKey    ctx.SessionKey = 4  // unused
+	muxPreferredSessionKey    ctx.SessionKey = 4 // unused
-	sockoptSessionKey         ctx.SessionKey = 5  // used by dokodemo to only receive sockopt.Mark
+	sockoptSessionKey         ctx.SessionKey = 5 // used by dokodemo to only receive sockopt.Mark
-	trackedConnectionErrorKey ctx.SessionKey = 6  // used by observer to get outbound error
+	trackedConnectionErrorKey ctx.SessionKey = 6 // used by observer to get outbound error
-	dispatcherKey             ctx.SessionKey = 7  // used by ss2022 inbounds to get dispatcher
+	dispatcherKey             ctx.SessionKey = 7 // used by ss2022 inbounds to get dispatcher
-	timeoutOnlyKey            ctx.SessionKey = 8  // mux context's child contexts to only cancel when its own traffic times out
+	timeoutOnlyKey            ctx.SessionKey = 8 // mux context's child contexts to only cancel when its own traffic times out
-	allowedNetworkKey         ctx.SessionKey = 9  // muxcool server control incoming request tcp/udp
+	allowedNetworkKey         ctx.SessionKey = 9 // muxcool server control incoming request tcp/udp
-	handlerSessionKey         ctx.SessionKey = 10 // outbound gets full handler
+	handlerSessionKey         ctx.SessionKey = 10 // unused
 	mitmAlpn11Key             ctx.SessionKey = 11 // used by TLS dialer
 	mitmServerNameKey         ctx.SessionKey = 12 // used by TLS dialer
 )
@@ -164,17 +163,6 @@ func AllowedNetworkFromContext(ctx context.Context) net.Network {
 	return net.Network_Unknown
 }
 
-func ContextWithHandler(ctx context.Context, handler outbound.Handler) context.Context {
-	return context.WithValue(ctx, handlerSessionKey, handler)
-}
-
-func HandlerFromContext(ctx context.Context) outbound.Handler {
-	if val, ok := ctx.Value(handlerSessionKey).(outbound.Handler); ok {
-		return val
-	}
-	return nil
-}
-
 func ContextWithMitmAlpn11(ctx context.Context, alpn11 bool) context.Context {
 	return context.WithValue(ctx, mitmAlpn11Key, alpn11)
 }

common/signal/timer.go

@@ -3,7 +3,6 @@ package signal
 import (
 	"context"
 	"sync"
-	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common"
@@ -15,12 +14,10 @@ type ActivityUpdater interface {
 }
 
 type ActivityTimer struct {
-	mu        sync.RWMutex
+	sync.RWMutex
 	updated   chan struct{}
 	checkTask *task.Periodic
 	onTimeout func()
-	consumed  atomic.Bool
-	once      sync.Once
 }
 
 func (t *ActivityTimer) Update() {
@@ -40,39 +37,39 @@ func (t *ActivityTimer) check() error {
 }
 
 func (t *ActivityTimer) finish() {
-	t.once.Do(func() {
+	t.Lock()
-		t.consumed.Store(true)
+	defer t.Unlock()
-		t.mu.Lock()
-		defer t.mu.Unlock()
 
-		common.CloseIfExists(t.checkTask)
+	if t.onTimeout != nil {
 		t.onTimeout()
-	})
+		t.onTimeout = nil
+	}
+	if t.checkTask != nil {
+		t.checkTask.Close()
+		t.checkTask = nil
+	}
 }
 
 func (t *ActivityTimer) SetTimeout(timeout time.Duration) {
-	if t.consumed.Load() {
-		return
-	}
 	if timeout == 0 {
 		t.finish()
 		return
 	}
 
-	t.mu.Lock()
+	checkTask := &task.Periodic{
-	defer t.mu.Unlock()
-	// double check, just in case
-	if t.consumed.Load() {
-		return
-	}
-	newCheckTask := &task.Periodic{
 		Interval: timeout,
 		Execute:  t.check,
 	}
-	common.CloseIfExists(t.checkTask)
+
-	t.checkTask = newCheckTask
+	t.Lock()
+
+	if t.checkTask != nil {
+		t.checkTask.Close()
+	}
+	t.checkTask = checkTask
 	t.Update()
-	common.Must(newCheckTask.Start())
+	common.Must(checkTask.Start())
+	t.Unlock()
 }
 
 func CancelAfterInactivity(ctx context.Context, cancel context.CancelFunc, timeout time.Duration) *ActivityTimer {

core/core.go

@@ -18,8 +18,8 @@ import (
 
 var (
 	Version_x byte = 25
-	Version_y byte = 9
+	Version_y byte = 8
-	Version_z byte = 11
+	Version_z byte = 3
 )
 
 var (

core/xray_test.go

@@ -63,13 +63,17 @@ func TestXrayClose(t *testing.T) {
 		Outbound: []*OutboundHandlerConfig{
 			{
 				ProxySettings: serial.ToTypedMessage(&outbound.Config{
-					Receiver: &protocol.ServerEndpoint{
+					Receiver: []*protocol.ServerEndpoint{
-						Address: net.NewIPOrDomain(net.LocalHostIP),
+						{
-						Port:    uint32(0),
+							Address: net.NewIPOrDomain(net.LocalHostIP),
-						User:  &protocol.User{
+							Port:    uint32(0),
-							Account: serial.ToTypedMessage(&vmess.Account{
+							User: []*protocol.User{
-								Id: userID.String(),
+								{
-							}),
+									Account: serial.ToTypedMessage(&vmess.Account{
+										Id: userID.String(),
+									}),
+								},
+							},
 						},
 					},
 				}),

features/inbound/inbound.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/features"
 )
@@ -19,6 +20,9 @@ type Handler interface {
 	ReceiverSettings() *serial.TypedMessage
 	// Returns the active proxy settings.
 	ProxySettings() *serial.TypedMessage
+
+	// Deprecated: Do not use in new code.
+	GetRandomInboundProxy() (interface{}, net.Port, int)
 }
 
 // Manager is a feature that manages InboundHandlers.

go.mod

@@ -16,18 +16,18 @@ require (
 	github.com/sagernet/sing v0.5.1
 	github.com/sagernet/sing-shadowsocks v0.2.7
 	github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771
-	github.com/stretchr/testify v1.11.1
+	github.com/stretchr/testify v1.10.0
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
 	github.com/vishvananda/netlink v1.3.1
-	github.com/xtls/reality v0.0.0-20250904214705-431b6ff8c67c
+	github.com/xtls/reality v0.0.0-20250725142056-5b52a03d4fb7
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.42.0
+	golang.org/x/crypto v0.41.0
-	golang.org/x/net v0.44.0
+	golang.org/x/net v0.43.0
-	golang.org/x/sync v0.17.0
+	golang.org/x/sync v0.16.0
-	golang.org/x/sys v0.36.0
+	golang.org/x/sys v0.35.0
 	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
-	google.golang.org/grpc v1.75.1
+	google.golang.org/grpc v1.75.0
-	google.golang.org/protobuf v1.36.9
+	google.golang.org/protobuf v1.36.8
 	gvisor.dev/gvisor v0.0.0-20250428193742-2d800c3129d5
 	h12.io/socks v1.0.3
 	lukechampine.com/blake3 v1.4.1
@@ -47,10 +47,10 @@ require (
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
 	github.com/vishvananda/netns v0.0.5 // indirect
 	go.uber.org/mock v0.5.0 // indirect
-	golang.org/x/mod v0.27.0 // indirect
+	golang.org/x/mod v0.26.0 // indirect
-	golang.org/x/text v0.29.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
-	golang.org/x/tools v0.36.0 // indirect
+	golang.org/x/tools v0.35.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect

go.sum

@@ -67,16 +67,16 @@ github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771 h1:emzAzMZ1
 github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771/go.mod h1:bR6DqgcAl1zTcOX8/pE2Qkj9XO00eCNqmKb7lXP8EAg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e h1:5QefA066A1tF8gHIiADmOVOV5LS43gt3ONnlEl3xkwI=
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e/go.mod h1:5t19P9LBIrNamL6AcMQOncg/r10y3Pc01AbHeMhwlpU=
 github.com/vishvananda/netlink v1.3.1 h1:3AEMt62VKqz90r0tmNhog0r/PpWKmrEShJU0wJW6bV0=
 github.com/vishvananda/netlink v1.3.1/go.mod h1:ARtKouGSTGchR8aMwmkzC0qiNPrrWO5JS/XMVl45+b4=
 github.com/vishvananda/netns v0.0.5 h1:DfiHV+j8bA32MFM7bfEunvT8IAqQ/NzSJHtcmW5zdEY=
 github.com/vishvananda/netns v0.0.5/go.mod h1:SpkAiCQRtJ6TvvxPnOSyH3BMl6unz3xZlaprSwhNNJM=
-github.com/xtls/reality v0.0.0-20250904214705-431b6ff8c67c h1:LHLhQY3mKXSpTcQAkjFR4/6ar3rXjQryNeM7khK3AHU=
+github.com/xtls/reality v0.0.0-20250725142056-5b52a03d4fb7 h1:Ript0vN+nSO33+Vj4n0mgNY5M+oOxFQJdrJ1VnwTBO0=
-github.com/xtls/reality v0.0.0-20250904214705-431b6ff8c67c/go.mod h1:XxvnCCgBee4WWE0bc4E+a7wbk8gkJ/rS0vNVNtC5qp0=
+github.com/xtls/reality v0.0.0-20250725142056-5b52a03d4fb7/go.mod h1:XxvnCCgBee4WWE0bc4E+a7wbk8gkJ/rS0vNVNtC5qp0=
 github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
 go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
@@ -96,20 +96,20 @@ go4.org/netipx v0.0.0-20231129151722-fdeea329fbba h1:0b9z3AuHCjxk0x/opv64kcgZLBs
 go4.org/netipx v0.0.0-20231129151722-fdeea329fbba/go.mod h1:PLyyIXexvUFg3Owu6p/WfdlivPbZJsZdgWZlrGope/Y=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.42.0 h1:chiH31gIWm57EkTXpwnqf8qeuMUi0yekh6mT2AvFlqI=
+golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
-golang.org/x/crypto v0.42.0/go.mod h1:4+rDnOTJhQCx2q7/j6rAN5XDw8kPjeaXEUR2eL94ix8=
+golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
-golang.org/x/mod v0.27.0 h1:kb+q2PyFnEADO2IEF935ehFUXlWiNjJWtRNgBLSfbxQ=
+golang.org/x/mod v0.26.0 h1:EGMPT//Ezu+ylkCijjPc+f4Aih7sZvaAr+O3EHBxvZg=
-golang.org/x/mod v0.27.0/go.mod h1:rWI627Fq0DEoudcK+MBkNkCe0EetEaDSwJJkCcjpazc=
+golang.org/x/mod v0.26.0/go.mod h1:/j6NAhSk8iQ723BGAUyoAcn7SlD7s15Dp9Nd/SfeaFQ=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.44.0 h1:evd8IRDyfNBMBTTY5XRF1vaZlD+EmWx6x8PkhR04H/I=
+golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
-golang.org/x/net v0.44.0/go.mod h1:ECOoLqd5U3Lhyeyo/QDCEVQ4sNgYsqvCZ722XogGieY=
+golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
-golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -117,21 +117,21 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
-golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
-golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
 golang.org/x/time v0.7.0 h1:ntUhktv3OPE6TgYxXWv9vKvUSJyIFJlyohwbkEwPrKQ=
 golang.org/x/time v0.7.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.8/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
-golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
+golang.org/x/tools v0.35.0 h1:mBffYraMEf7aa0sB+NuKnuCy8qI/9Bughn8dC2Gu5r0=
-golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=
+golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -143,10 +143,10 @@ gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
 gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20250707201910-8d1bb00bc6a7 h1:pFyd6EwwL2TqFf8emdthzeX+gZE1ElRq3iM8pui4KBY=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20250707201910-8d1bb00bc6a7/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
-google.golang.org/grpc v1.75.1 h1:/ODCNEuf9VghjgO3rqLcfg8fiOP0nSluljWFlDxELLI=
+google.golang.org/grpc v1.75.0 h1:+TW+dqTd2Biwe6KKfhE5JpiYIBWq865PhKGSXiivqt4=
-google.golang.org/grpc v1.75.1/go.mod h1:JtPAzKiq4v1xcAB2hydNlWI2RnF85XXcV0mhKXr2ecQ=
+google.golang.org/grpc v1.75.0/go.mod h1:JtPAzKiq4v1xcAB2hydNlWI2RnF85XXcV0mhKXr2ecQ=
-google.golang.org/protobuf v1.36.9 h1:w2gp2mA27hUeUzj9Ex9FBjsBm40zfaDtEWow293U7Iw=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
-google.golang.org/protobuf v1.36.9/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

infra/conf/http.go

@@ -51,65 +51,31 @@ type HTTPRemoteConfig struct {
 }
 
 type HTTPClientConfig struct {
-	Address  *Address          	 `json:"address"`
+	Servers []*HTTPRemoteConfig `json:"servers"`
-	Port     uint16            	 `json:"port"`
+	Headers map[string]string   `json:"headers"`
-	Level    uint32              `json:"level"`
-	Email    string              `json:"email"`
-	Username string              `json:"user"`
-	Password string              `json:"pass"`
-	Servers  []*HTTPRemoteConfig `json:"servers"`
-	Headers  map[string]string   `json:"headers"`
 }
 
 func (v *HTTPClientConfig) Build() (proto.Message, error) {
 	config := new(http.ClientConfig)
-	if v.Address != nil {
+	config.Server = make([]*protocol.ServerEndpoint, len(v.Servers))
-		v.Servers = []*HTTPRemoteConfig{
+	for idx, serverConfig := range v.Servers {
-			{
-				Address: v.Address,
-				Port:    v.Port,
-			},
-		}
-		if len(v.Username) > 0 {
-			v.Servers[0].Users = []json.RawMessage{{}}
-		}
-	}
-	if len(v.Servers) != 1 {
-		return nil, errors.New(`HTTP settings: "servers" should have one and only one member. Multiple endpoints in "servers" should use multiple HTTP outbounds and routing balancer instead`)
-	}
-	for _, serverConfig := range v.Servers {
-		if len(serverConfig.Users) > 1 {
-			return nil, errors.New(`HTTP servers: "users" should have one member at most. Multiple members in "users" should use multiple HTTP outbounds and routing balancer instead`)
-		}
 		server := &protocol.ServerEndpoint{
 			Address: serverConfig.Address.Build(),
 			Port:    uint32(serverConfig.Port),
 		}
 		for _, rawUser := range serverConfig.Users {
 			user := new(protocol.User)
-			if v.Address != nil {
+			if err := json.Unmarshal(rawUser, user); err != nil {
-				user.Level = v.Level
+				return nil, errors.New("failed to parse HTTP user").Base(err).AtError()
-				user.Email = v.Email
-			} else {
-				if err := json.Unmarshal(rawUser, user); err != nil {
-					return nil, errors.New("failed to parse HTTP user").Base(err).AtError()
-				}
 			}
 			account := new(HTTPAccount)
-			if v.Address != nil {
+			if err := json.Unmarshal(rawUser, account); err != nil {
-				account.Username = v.Username
+				return nil, errors.New("failed to parse HTTP account").Base(err).AtError()
-				account.Password = v.Password
-			} else {
-				if err := json.Unmarshal(rawUser, account); err != nil {
-					return nil, errors.New("failed to parse HTTP account").Base(err).AtError()
-				}
 			}
 			user.Account = serial.ToTypedMessage(account.Build())
-			server.User = user
+			server.User = append(server.User, user)
-			break
 		}
-		config.Server = server
+		config.Server[idx] = server
-		break
 	}
 	config.Header = make([]*http.Header, 0, 32)
 	for key, value := range v.Headers {

infra/conf/shadowsocks.go

@@ -162,46 +162,22 @@ func buildShadowsocks2022(v *ShadowsocksServerConfig) (proto.Message, error) {
 type ShadowsocksServerTarget struct {
 	Address    *Address `json:"address"`
 	Port       uint16   `json:"port"`
-	Level      byte     `json:"level"`
-	Email      string   `json:"email"`
 	Cipher     string   `json:"method"`
 	Password   string   `json:"password"`
+	Email      string   `json:"email"`
+	Level      byte     `json:"level"`
 	IVCheck    bool     `json:"ivCheck"`
 	UoT        bool     `json:"uot"`
 	UoTVersion int      `json:"uotVersion"`
 }
 
 type ShadowsocksClientConfig struct {
-	Address    *Address                   `json:"address"`
+	Servers []*ShadowsocksServerTarget `json:"servers"`
-	Port       uint16                     `json:"port"`
-	Level      byte                       `json:"level"`
-	Email      string                     `json:"email"`
-	Cipher     string                     `json:"method"`
-	Password   string                     `json:"password"`
-	IVCheck    bool                       `json:"ivCheck"`
-	UoT        bool                       `json:"uot"`
-	UoTVersion int                        `json:"uotVersion"`
-	Servers    []*ShadowsocksServerTarget `json:"servers"`
 }
 
 func (v *ShadowsocksClientConfig) Build() (proto.Message, error) {
-	if v.Address != nil {
+	if len(v.Servers) == 0 {
-		v.Servers = []*ShadowsocksServerTarget{
+		return nil, errors.New("0 Shadowsocks server configured.")
-			{
-				Address:    v.Address,
-				Port:       v.Port,
-				Level:      v.Level,
-				Email:      v.Email,
-				Cipher:     v.Cipher,
-				Password:   v.Password,
-				IVCheck:    v.IVCheck,
-				UoT:        v.UoT,
-				UoTVersion: v.UoTVersion,
-			},
-		}
-	}
-	if len(v.Servers) != 1 {
-		return nil, errors.New(`Shadowsocks settings: "servers" should have one and only one member. Multiple endpoints in "servers" should use multiple Shadowsocks outbounds and routing balancer instead`)
 	}
 
 	if len(v.Servers) == 1 {
@@ -229,7 +205,8 @@ func (v *ShadowsocksClientConfig) Build() (proto.Message, error) {
 	}
 
 	config := new(shadowsocks.ClientConfig)
-	for _, server := range v.Servers {
+	serverSpecs := make([]*protocol.ServerEndpoint, len(v.Servers))
+	for idx, server := range v.Servers {
 		if C.Contains(shadowaead_2022.List, server.Cipher) {
 			return nil, errors.New("Shadowsocks 2022 accept no multi servers")
 		}
@@ -255,16 +232,19 @@ func (v *ShadowsocksClientConfig) Build() (proto.Message, error) {
 		ss := &protocol.ServerEndpoint{
 			Address: server.Address.Build(),
 			Port:    uint32(server.Port),
-			User:    &protocol.User{
+			User: []*protocol.User{
-				Level:   uint32(server.Level),
+				{
-				Email:   server.Email,
+					Level:   uint32(server.Level),
-				Account: serial.ToTypedMessage(account),
+					Email:   server.Email,
+					Account: serial.ToTypedMessage(account),
+				},
 			},
 		}
 
-		config.Server = ss
+		serverSpecs[idx] = ss
-		break
 	}
 
+	config.Server = serverSpecs
+
 	return config, nil
 }

infra/conf/socks.go

@@ -70,64 +70,30 @@ type SocksRemoteConfig struct {
 }
 
 type SocksClientConfig struct {
-	Address  *Address             `json:"address"`
+	Servers []*SocksRemoteConfig `json:"servers"`
-	Port     uint16               `json:"port"`
-	Level    uint32               `json:"level"`
-	Email    string               `json:"email"`
-	Username string               `json:"user"`
-	Password string               `json:"pass"`
-	Servers  []*SocksRemoteConfig `json:"servers"`
 }
 
 func (v *SocksClientConfig) Build() (proto.Message, error) {
 	config := new(socks.ClientConfig)
-	if v.Address != nil {
+	config.Server = make([]*protocol.ServerEndpoint, len(v.Servers))
-		v.Servers = []*SocksRemoteConfig{
+	for idx, serverConfig := range v.Servers {
-			{
-				Address: v.Address,
-				Port:    v.Port,
-			},
-		}
-		if len(v.Username) > 0 {
-			v.Servers[0].Users = []json.RawMessage{{}}
-		}
-	}
-	if len(v.Servers) != 1 {
-		return nil, errors.New(`SOCKS settings: "servers" should have one and only one member. Multiple endpoints in "servers" should use multiple SOCKS outbounds and routing balancer instead`)
-	}
-	for _, serverConfig := range v.Servers {
-		if len(serverConfig.Users) > 1 {
-			return nil, errors.New(`SOCKS servers: "users" should have one member at most. Multiple members in "users" should use multiple SOCKS outbounds and routing balancer instead`)
-		}
 		server := &protocol.ServerEndpoint{
 			Address: serverConfig.Address.Build(),
 			Port:    uint32(serverConfig.Port),
 		}
 		for _, rawUser := range serverConfig.Users {
 			user := new(protocol.User)
-			if v.Address != nil {
+			if err := json.Unmarshal(rawUser, user); err != nil {
-				user.Level = v.Level
+				return nil, errors.New("failed to parse Socks user").Base(err).AtError()
-				user.Email = v.Email
-			} else {
-				if err := json.Unmarshal(rawUser, user); err != nil {
-					return nil, errors.New("failed to parse Socks user").Base(err).AtError()
-				}
 			}
 			account := new(SocksAccount)
-			if v.Address != nil {
+			if err := json.Unmarshal(rawUser, account); err != nil {
-				account.Username = v.Username
+				return nil, errors.New("failed to parse socks account").Base(err).AtError()
-				account.Password = v.Password
-			} else {
-				if err := json.Unmarshal(rawUser, account); err != nil {
-					return nil, errors.New("failed to parse socks account").Base(err).AtError()
-				}
 			}
 			user.Account = serial.ToTypedMessage(account.Build())
-			server.User = user
+			server.User = append(server.User, user)
-			break
 		}
-		config.Server = server
+		config.Server[idx] = server
-		break
 	}
 	return config, nil
 }

infra/conf/socks_test.go

@@ -65,47 +65,24 @@ func TestSocksOutboundConfig(t *testing.T) {
 			}`,
 			Parser: loadJSON(creator),
 			Output: &socks.ClientConfig{
-				Server: &protocol.ServerEndpoint{
+				Server: []*protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
+					{
-						Address: &net.IPOrDomain_Ip{
+						Address: &net.IPOrDomain{
-							Ip: []byte{127, 0, 0, 1},
+							Address: &net.IPOrDomain_Ip{
+								Ip: []byte{127, 0, 0, 1},
+							},
 						},
-					},
+						Port: 1234,
-					Port: 1234,
+						User: []*protocol.User{
-					User: &protocol.User{
+							{
-						Email: "test@email.com",
+								Email: "test@email.com",
-						Account: serial.ToTypedMessage(&socks.Account{
+								Account: serial.ToTypedMessage(&socks.Account{
-							Username: "test user",
+									Username: "test user",
-							Password: "test pass",
+									Password: "test pass",
-						}),
+								}),
-					},
+							},
-				},
-			},
-		},
-		{
-			Input: `{
-				"address": "127.0.0.1",
-				"port": 1234,
-				"user": "test user",
-				"pass": "test pass",
-				"email": "test@email.com"
-			}`,
-			Parser: loadJSON(creator),
-			Output: &socks.ClientConfig{
-				Server: &protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
-						Address: &net.IPOrDomain_Ip{
-							Ip: []byte{127, 0, 0, 1},
 						},
 					},
-					Port: 1234,
-					User: &protocol.User{
-						Email: "test@email.com",
-						Account: serial.ToTypedMessage(&socks.Account{
-							Username: "test user",
-							Password: "test pass",
-						}),
-					},
 				},
 			},
 		},

infra/conf/trojan.go

@@ -20,44 +20,28 @@ import (
 type TrojanServerTarget struct {
 	Address  *Address `json:"address"`
 	Port     uint16   `json:"port"`
-	Level    byte     `json:"level"`
-	Email    string   `json:"email"`
 	Password string   `json:"password"`
+	Email    string   `json:"email"`
+	Level    byte     `json:"level"`
 	Flow     string   `json:"flow"`
 }
 
 // TrojanClientConfig is configuration of trojan servers
 type TrojanClientConfig struct {
-	Address  *Address              `json:"address"`
+	Servers []*TrojanServerTarget `json:"servers"`
-	Port     uint16                `json:"port"`
-	Level    byte                  `json:"level"`
-	Email    string                `json:"email"`
-	Password string                `json:"password"`
-	Flow     string                `json:"flow"`
-	Servers  []*TrojanServerTarget `json:"servers"`
 }
 
 // Build implements Buildable
 func (c *TrojanClientConfig) Build() (proto.Message, error) {
-	if c.Address != nil {
+	if len(c.Servers) == 0 {
-		c.Servers = []*TrojanServerTarget{
+		return nil, errors.New("0 Trojan server configured.")
-			{
-				Address:  c.Address,
-				Port:     c.Port,
-				Level:    c.Level,
-				Email:    c.Email,
-				Password: c.Password,
-				Flow:     c.Flow,
-			},
-		}
-	}
-	if len(c.Servers) != 1 {
-		return nil, errors.New(`Trojan settings: "servers" should have one and only one member. Multiple endpoints in "servers" should use multiple Trojan outbounds and routing balancer instead`)
 	}
 
-	config := &trojan.ClientConfig{}
+	config := &trojan.ClientConfig{
+		Server: make([]*protocol.ServerEndpoint, len(c.Servers)),
+	}
 
-	for _, rec := range c.Servers {
+	for idx, rec := range c.Servers {
 		if rec.Address == nil {
 			return nil, errors.New("Trojan server address is not set.")
 		}
@@ -71,19 +55,19 @@ func (c *TrojanClientConfig) Build() (proto.Message, error) {
 			return nil, errors.PrintRemovedFeatureError(`Flow for Trojan`, ``)
 		}
 
-		config.Server = &protocol.ServerEndpoint{
+		config.Server[idx] = &protocol.ServerEndpoint{
 			Address: rec.Address.Build(),
 			Port:    uint32(rec.Port),
-			User:    &protocol.User{
+			User: []*protocol.User{
-				Level: uint32(rec.Level),
+				{
-				Email: rec.Email,
+					Level: uint32(rec.Level),
-				Account: serial.ToTypedMessage(&trojan.Account{
+					Email: rec.Email,
-					Password: rec.Password,
+					Account: serial.ToTypedMessage(&trojan.Account{
-				}),
+						Password: rec.Password,
+					}),
+				},
 			},
 		}
-
-		break
 	}
 
 	return config, nil

infra/conf/vless.go

@@ -1,7 +1,6 @@
 package conf
 
 import (
-	"encoding/base64"
 	"encoding/json"
 	"path/filepath"
 	"runtime"
@@ -74,71 +73,17 @@ func (c *VLessInboundConfig) Build() (proto.Message, error) {
 		}
 
 		if account.Encryption != "" {
-			return nil, errors.New(`VLESS clients: "encryption" should not be in inbound settings`)
+			return nil, errors.New(`VLESS clients: "encryption" should not in inbound settings`)
-		}
-
-		if account.Reverse != nil && account.Reverse.Tag == "" {
-			return nil, errors.New(`VLESS clients: "tag" can't be empty for "reverse"`)
 		}
 
 		user.Account = serial.ToTypedMessage(account)
 		config.Clients[idx] = user
 	}
 
+	if c.Decryption != "none" {
+		return nil, errors.New(`VLESS settings: please add/set "decryption":"none" to every settings`)
+	}
 	config.Decryption = c.Decryption
-	if !func() bool {
-		s := strings.Split(config.Decryption, ".")
-		if len(s) < 4 || s[0] != "mlkem768x25519plus" {
-			return false
-		}
-		switch s[1] {
-		case "native":
-		case "xorpub":
-			config.XorMode = 1
-		case "random":
-			config.XorMode = 2
-		default:
-			return false
-		}
-		t := strings.SplitN(strings.TrimSuffix(s[2], "s"), "-", 2)
-		i, err := strconv.Atoi(t[0])
-		if err != nil {
-			return false
-		}
-		config.SecondsFrom = int64(i)
-		if len(t) == 2 {
-			i, err := strconv.Atoi(t[1])
-			if err != nil {
-				return false
-			}
-			config.SecondsTo = int64(i)
-		}
-		padding := 0
-		for _, r := range s[3:] {
-			if len(r) < 20 {
-				padding += len(r) + 1
-				continue
-			}
-			if b, _ := base64.RawURLEncoding.DecodeString(r); len(b) != 32 && len(b) != 64 {
-				return false
-			}
-		}
-		config.Decryption = config.Decryption[27+len(s[2]):]
-		if padding > 0 {
-			config.Padding = config.Decryption[:padding-1]
-			config.Decryption = config.Decryption[padding:]
-		}
-		return true
-	}() && config.Decryption != "none" {
-		if config.Decryption == "" {
-			return nil, errors.New(`VLESS settings: please add/set "decryption":"none" to every settings`)
-		}
-		return nil, errors.New(`VLESS settings: unsupported "decryption": ` + config.Decryption)
-	}
-
-	if config.Decryption != "none" && c.Fallbacks != nil {
-		return nil, errors.New(`VLESS settings: "fallbacks" can not be used together with "decryption"`)
-	}
 
 	for _, fb := range c.Fallbacks {
 		var i uint16
@@ -203,65 +148,37 @@ type VLessOutboundVnext struct {
 }
 
 type VLessOutboundConfig struct {
-	Address    *Address              `json:"address"`
+	Vnext []*VLessOutboundVnext `json:"vnext"`
-	Port       uint16                `json:"port"`
-	Level      uint32                `json:"level"`
-	Email      string                `json:"email"`
-	Id         string                `json:"id"`
-	Flow       string                `json:"flow"`
-	Seed       string                `json:"seed"`
-	Encryption string                `json:"encryption"`
-	Reverse    *vless.Reverse        `json:"reverse"`
-	Vnext      []*VLessOutboundVnext `json:"vnext"`
 }
 
 // Build implements Buildable
 func (c *VLessOutboundConfig) Build() (proto.Message, error) {
 	config := new(outbound.Config)
-	if c.Address != nil {
+
-		c.Vnext = []*VLessOutboundVnext{
+	if len(c.Vnext) == 0 {
-			{
+		return nil, errors.New(`VLESS settings: "vnext" is empty`)
-				Address: c.Address,
-				Port:    c.Port,
-				Users:   []json.RawMessage{{}},
-			},
-		}
 	}
-	if len(c.Vnext) != 1 {
+	config.Vnext = make([]*protocol.ServerEndpoint, len(c.Vnext))
-		return nil, errors.New(`VLESS settings: "vnext" should have one and only one member. Multiple endpoints in "vnext" should use multiple VLESS outbounds and routing balancer instead`)
+	for idx, rec := range c.Vnext {
-	}
-	for _, rec := range c.Vnext {
 		if rec.Address == nil {
 			return nil, errors.New(`VLESS vnext: "address" is not set`)
 		}
-		if len(rec.Users) != 1 {
+		if len(rec.Users) == 0 {
-			return nil, errors.New(`VLESS vnext: "users" should have one and only one member. Multiple members in "users" should use multiple VLESS outbounds and routing balancer instead`)
+			return nil, errors.New(`VLESS vnext: "users" is empty`)
 		}
 		spec := &protocol.ServerEndpoint{
 			Address: rec.Address.Build(),
 			Port:    uint32(rec.Port),
+			User:    make([]*protocol.User, len(rec.Users)),
 		}
-		for _, rawUser := range rec.Users {
+		for idx, rawUser := range rec.Users {
 			user := new(protocol.User)
-			if c.Address != nil {
+			if err := json.Unmarshal(rawUser, user); err != nil {
-				user.Level = c.Level
+				return nil, errors.New(`VLESS users: invalid user`).Base(err)
-				user.Email = c.Email
-			} else {
-				if err := json.Unmarshal(rawUser, user); err != nil {
-					return nil, errors.New(`VLESS users: invalid user`).Base(err)
-				}
 			}
 			account := new(vless.Account)
-			if c.Address != nil {
+			if err := json.Unmarshal(rawUser, account); err != nil {
-				account.Id = c.Id
+				return nil, errors.New(`VLESS users: invalid user`).Base(err)
-				account.Flow = c.Flow
-				//account.Seed = c.Seed
-				account.Encryption = c.Encryption
-				account.Reverse = c.Reverse
-			} else {
-				if err := json.Unmarshal(rawUser, account); err != nil {
-					return nil, errors.New(`VLESS users: invalid user`).Base(err)
-				}
 			}
 
 			u, err := uuid.ParseString(account.Id)
@@ -276,60 +193,14 @@ func (c *VLessOutboundConfig) Build() (proto.Message, error) {
 				return nil, errors.New(`VLESS users: "flow" doesn't support "` + account.Flow + `" in this version`)
 			}
 
-			if !func() bool {
+			if account.Encryption != "none" {
-				s := strings.Split(account.Encryption, ".")
+				return nil, errors.New(`VLESS users: please add/set "encryption":"none" for every user`)
-				if len(s) < 4 || s[0] != "mlkem768x25519plus" {
-					return false
-				}
-				switch s[1] {
-				case "native":
-				case "xorpub":
-					account.XorMode = 1
-				case "random":
-					account.XorMode = 2
-				default:
-					return false
-				}
-				switch s[2] {
-				case "1rtt":
-				case "0rtt":
-					account.Seconds = 1
-				default:
-					return false
-				}
-				padding := 0
-				for _, r := range s[3:] {
-					if len(r) < 20 {
-						padding += len(r) + 1
-						continue
-					}
-					if b, _ := base64.RawURLEncoding.DecodeString(r); len(b) != 32 && len(b) != 1184 {
-						return false
-					}
-				}
-				account.Encryption = account.Encryption[27+len(s[2]):]
-				if padding > 0 {
-					account.Padding = account.Encryption[:padding-1]
-					account.Encryption = account.Encryption[padding:]
-				}
-				return true
-			}() && account.Encryption != "none" {
-				if account.Encryption == "" {
-					return nil, errors.New(`VLESS users: please add/set "encryption":"none" for every user`)
-				}
-				return nil, errors.New(`VLESS users: unsupported "encryption": ` + account.Encryption)
-			}
-
-			if account.Reverse != nil && account.Reverse.Tag == "" {
-				return nil, errors.New(`VLESS clients: "tag" can't be empty for "reverse"`)
 			}
 
 			user.Account = serial.ToTypedMessage(account)
-			spec.User = user
+			spec.User[idx] = user
-			break
 		}
-		config.Vnext = spec
+		config.Vnext[idx] = spec
-		break
 	}
 
 	return config, nil

infra/conf/vless_test.go

@@ -35,50 +35,25 @@ func TestVLessOutbound(t *testing.T) {
 			}`,
 			Parser: loadJSON(creator),
 			Output: &outbound.Config{
-				Vnext: &protocol.ServerEndpoint{
+				Vnext: []*protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
+					{
-						Address: &net.IPOrDomain_Domain{
+						Address: &net.IPOrDomain{
-							Domain: "example.com",
+							Address: &net.IPOrDomain_Domain{
+								Domain: "example.com",
+							},
 						},
-					},
+						Port: 443,
-					Port: 443,
+						User: []*protocol.User{
-					User: &protocol.User{
+							{
-						Account: serial.ToTypedMessage(&vless.Account{
+								Account: serial.ToTypedMessage(&vless.Account{
-							Id:         "27848739-7e62-4138-9fd3-098a63964b6b",
+									Id:         "27848739-7e62-4138-9fd3-098a63964b6b",
-							Flow:       "xtls-rprx-vision-udp443",
+									Flow:       "xtls-rprx-vision-udp443",
-							Encryption: "none",
+									Encryption: "none",
-						}),
+								}),
-						Level: 0,
+								Level: 0,
-					},
+							},
-				},
-			},
-		},
-		{
-			Input: `{
-				"address": "example.com",
-				"port": 443,
-				"id": "27848739-7e62-4138-9fd3-098a63964b6b",
-				"flow": "xtls-rprx-vision-udp443",
-				"encryption": "none",
-				"level": 0
-			}`,
-			Parser: loadJSON(creator),
-			Output: &outbound.Config{
-				Vnext: &protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
-						Address: &net.IPOrDomain_Domain{
-							Domain: "example.com",
 						},
 					},
-					Port: 443,
-					User: &protocol.User{
-						Account: serial.ToTypedMessage(&vless.Account{
-							Id:         "27848739-7e62-4138-9fd3-098a63964b6b",
-							Flow:       "xtls-rprx-vision-udp443",
-							Encryption: "none",
-						}),
-						Level: 0,
-					},
 				},
 			},
 		},

infra/conf/vmess.go

@@ -46,6 +46,17 @@ func (a *VMessAccount) Build() *vmess.Account {
 	}
 }
 
+type VMessDetourConfig struct {
+	ToTag string `json:"to"`
+}
+
+// Build implements Buildable
+func (c *VMessDetourConfig) Build() *inbound.DetourConfig {
+	return &inbound.DetourConfig{
+		To: c.ToTag,
+	}
+}
+
 type VMessDefaultConfig struct {
 	Level byte `json:"level"`
 }
@@ -60,6 +71,7 @@ func (c *VMessDefaultConfig) Build() *inbound.DefaultConfig {
 type VMessInboundConfig struct {
 	Users        []json.RawMessage   `json:"clients"`
 	Defaults     *VMessDefaultConfig `json:"default"`
+	DetourConfig *VMessDetourConfig  `json:"detour"`
 }
 
 // Build implements Buildable
@@ -70,6 +82,10 @@ func (c *VMessInboundConfig) Build() (proto.Message, error) {
 		config.Default = c.Defaults.Build()
 	}
 
+	if c.DetourConfig != nil {
+		config.Detour = c.DetourConfig.Build()
+	}
+
 	config.User = make([]*protocol.User, len(c.Users))
 	for idx, rawData := range c.Users {
 		user := new(protocol.User)
@@ -101,37 +117,23 @@ type VMessOutboundTarget struct {
 }
 
 type VMessOutboundConfig struct {
-	Address     *Address               `json:"address"`
+	Receivers []*VMessOutboundTarget `json:"vnext"`
-	Port        uint16                 `json:"port"`
-	Level       uint32                 `json:"level"`
-	Email       string                 `json:"email"`
-	ID          string                 `json:"id"`
-	Security    string                 `json:"security"`
-	Experiments string                 `json:"experiments"`
-	Receivers   []*VMessOutboundTarget `json:"vnext"`
 }
 
 // Build implements Buildable
 func (c *VMessOutboundConfig) Build() (proto.Message, error) {
 	config := new(outbound.Config)
-	if c.Address != nil {
+
-		c.Receivers = []*VMessOutboundTarget{
+	if len(c.Receivers) == 0 {
-			{
+		return nil, errors.New("0 VMess receiver configured")
-				Address: c.Address,
-				Port:    c.Port,
-				Users:   []json.RawMessage{{}},
-			},
-		}
 	}
-	if len(c.Receivers) != 1 {
+	serverSpecs := make([]*protocol.ServerEndpoint, len(c.Receivers))
-		return nil, errors.New(`VMess settings: "vnext" should have one and only one member. Multiple endpoints in "vnext" should use multiple VMess outbounds and routing balancer instead`)
+	for idx, rec := range c.Receivers {
-	}
+		if len(rec.Users) == 0 {
-	for _, rec := range c.Receivers {
+			return nil, errors.New("0 user configured for VMess outbound")
-		if len(rec.Users) != 1 {
-			return nil, errors.New(`VMess vnext: "users" should have one and only one member. Multiple members in "users" should use multiple VMess outbounds and routing balancer instead`)
 		}
 		if rec.Address == nil {
-			return nil, errors.New(`VMess vnext: "address" is not set`)
+			return nil, errors.New("address is not set in VMess outbound config")
 		}
 		spec := &protocol.ServerEndpoint{
 			Address: rec.Address.Build(),
@@ -139,23 +141,12 @@ func (c *VMessOutboundConfig) Build() (proto.Message, error) {
 		}
 		for _, rawUser := range rec.Users {
 			user := new(protocol.User)
-			if c.Address != nil {
+			if err := json.Unmarshal(rawUser, user); err != nil {
-				user.Level = c.Level
+				return nil, errors.New("invalid VMess user").Base(err)
-				user.Email = c.Email
-			} else {
-				if err := json.Unmarshal(rawUser, user); err != nil {
-					return nil, errors.New("invalid VMess user").Base(err)
-				}
 			}
 			account := new(VMessAccount)
-			if c.Address != nil {
+			if err := json.Unmarshal(rawUser, account); err != nil {
-				account.ID = c.ID
+				return nil, errors.New("invalid VMess user").Base(err)
-				account.Security = c.Security
-				account.Experiments = c.Experiments
-			} else {
-				if err := json.Unmarshal(rawUser, account); err != nil {
-					return nil, errors.New("invalid VMess user").Base(err)
-				}
 			}
 
 			u, err := uuid.ParseString(account.ID)
@@ -165,11 +156,10 @@ func (c *VMessOutboundConfig) Build() (proto.Message, error) {
 			account.ID = u.String()
 
 			user.Account = serial.ToTypedMessage(account.Build())
-			spec.User = user
+			spec.User = append(spec.User, user)
-			break
 		}
-		config.Receiver = spec
+		serverSpecs[idx] = spec
-		break
 	}
+	config.Receiver = serverSpecs
 	return config, nil
 }

infra/conf/vmess_test.go

@@ -34,52 +34,26 @@ func TestVMessOutbound(t *testing.T) {
 			}`,
 			Parser: loadJSON(creator),
 			Output: &outbound.Config{
-				Receiver: &protocol.ServerEndpoint{
+				Receiver: []*protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
+					{
-						Address: &net.IPOrDomain_Ip{
+						Address: &net.IPOrDomain{
-							Ip: []byte{127, 0, 0, 1},
+							Address: &net.IPOrDomain_Ip{
-						},
+								Ip: []byte{127, 0, 0, 1},
-					},
-					Port: 80,
-					User: &protocol.User{
-						Email: "love@example.com",
-						Level: 255,
-						Account: serial.ToTypedMessage(&vmess.Account{
-							Id: "e641f5ad-9397-41e3-bf1a-e8740dfed019",
-							SecuritySettings: &protocol.SecurityConfig{
-								Type: protocol.SecurityType_AUTO,
 							},
-						}),
-					},
-				},
-			},
-		},
-		{
-			Input: `{
-				"address": "127.0.0.1",
-				"port": 80,
-				"id": "e641f5ad-9397-41e3-bf1a-e8740dfed019",
-				"email": "love@example.com",
-				"level": 255
-			}`,
-			Parser: loadJSON(creator),
-			Output: &outbound.Config{
-				Receiver: &protocol.ServerEndpoint{
-					Address: &net.IPOrDomain{
-						Address: &net.IPOrDomain_Ip{
-							Ip: []byte{127, 0, 0, 1},
 						},
-					},
+						Port: 80,
-					Port: 80,
+						User: []*protocol.User{
-					User: &protocol.User{
+							{
-						Email: "love@example.com",
+								Email: "love@example.com",
-						Level: 255,
+								Level: 255,
-						Account: serial.ToTypedMessage(&vmess.Account{
+								Account: serial.ToTypedMessage(&vmess.Account{
-							Id: "e641f5ad-9397-41e3-bf1a-e8740dfed019",
+									Id: "e641f5ad-9397-41e3-bf1a-e8740dfed019",
-							SecuritySettings: &protocol.SecurityConfig{
+									SecuritySettings: &protocol.SecurityConfig{
-								Type: protocol.SecurityType_AUTO,
+										Type: protocol.SecurityType_AUTO,
+									},
+								}),
 							},
-						}),
+						},
 					},
 				},
 			},
@@ -105,7 +79,11 @@ func TestVMessInbound(t *testing.T) {
 				],
 				"default": {
 					"level": 0
-				}
+				},
+				"detour": {
+					"to": "tag_to_detour"
+				},
+				"disableInsecureEncryption": true
 			}`,
 			Parser: loadJSON(creator),
 			Output: &inbound.Config{
@@ -124,6 +102,9 @@ func TestVMessInbound(t *testing.T) {
 				Default: &inbound.DefaultConfig{
 					Level: 0,
 				},
+				Detour: &inbound.DetourConfig{
+					To: "tag_to_detour",
+				},
 			},
 		},
 	})

infra/conf/xray.go

@@ -3,6 +3,7 @@ package conf
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"log"
 	"os"
 	"path/filepath"
@@ -119,12 +120,47 @@ func (m *MuxConfig) Build() (*proxyman.MultiplexingConfig, error) {
 	}, nil
 }
 
+type InboundDetourAllocationConfig struct {
+	Strategy    string  `json:"strategy"`
+	Concurrency *uint32 `json:"concurrency"`
+	RefreshMin  *uint32 `json:"refresh"`
+}
+
+// Build implements Buildable.
+func (c *InboundDetourAllocationConfig) Build() (*proxyman.AllocationStrategy, error) {
+	config := new(proxyman.AllocationStrategy)
+	switch strings.ToLower(c.Strategy) {
+	case "always":
+		config.Type = proxyman.AllocationStrategy_Always
+	case "random":
+		config.Type = proxyman.AllocationStrategy_Random
+	case "external":
+		config.Type = proxyman.AllocationStrategy_External
+	default:
+		return nil, errors.New("unknown allocation strategy: ", c.Strategy)
+	}
+	if c.Concurrency != nil {
+		config.Concurrency = &proxyman.AllocationStrategy_AllocationStrategyConcurrency{
+			Value: *c.Concurrency,
+		}
+	}
+
+	if c.RefreshMin != nil {
+		config.Refresh = &proxyman.AllocationStrategy_AllocationStrategyRefresh{
+			Value: *c.RefreshMin,
+		}
+	}
+
+	return config, nil
+}
+
 type InboundDetourConfig struct {
 	Protocol       string                         `json:"protocol"`
 	PortList       *PortList                      `json:"port"`
 	ListenOn       *Address                       `json:"listen"`
 	Settings       *json.RawMessage               `json:"settings"`
 	Tag            string                         `json:"tag"`
+	Allocation     *InboundDetourAllocationConfig `json:"allocate"`
 	StreamSetting  *StreamConfig                  `json:"streamSettings"`
 	SniffingConfig *SniffingConfig                `json:"sniffing"`
 }
@@ -161,6 +197,30 @@ func (c *InboundDetourConfig) Build() (*core.InboundHandlerConfig, error) {
 		}
 	}
 
+	if c.Allocation != nil {
+		concurrency := -1
+		if c.Allocation.Concurrency != nil && c.Allocation.Strategy == "random" {
+			concurrency = int(*c.Allocation.Concurrency)
+		}
+		portRange := 0
+
+		for _, pr := range c.PortList.Range {
+			portRange += int(pr.To - pr.From + 1)
+		}
+		if concurrency >= 0 && concurrency >= portRange {
+			var ports strings.Builder
+			for _, pr := range c.PortList.Range {
+				fmt.Fprintf(&ports, "%d-%d ", pr.From, pr.To)
+			}
+			return nil, errors.New("not enough ports. concurrency = ", concurrency, " ports: ", ports.String())
+		}
+
+		as, err := c.Allocation.Build()
+		if err != nil {
+			return nil, err
+		}
+		receiverSettings.AllocationStrategy = as
+	}
 	if c.StreamSetting != nil {
 		ss, err := c.StreamSetting.Build()
 		if err != nil {

infra/conf/xray_test.go

@@ -58,6 +58,10 @@ func TestXrayConfig(t *testing.T) {
 					},
 					"protocol": "vmess",
 					"port": "443-500",
+					"allocate": {
+						"strategy": "random",
+						"concurrency": 3
+					},
 					"settings": {
 						"clients": [
 							{
@@ -119,6 +123,12 @@ func TestXrayConfig(t *testing.T) {
 								From: 443,
 								To:   500,
 							}}},
+							AllocationStrategy: &proxyman.AllocationStrategy{
+								Type: proxyman.AllocationStrategy_Random,
+								Concurrency: &proxyman.AllocationStrategy_AllocationStrategyConcurrency{
+									Value: 3,
+								},
+							},
 							StreamSettings: &internet.StreamConfig{
 								ProtocolName: "websocket",
 								TransportSettings: []*internet.TransportConfig{

main/commands/all/commands.go

@@ -17,7 +17,5 @@ func init() {
 		cmdX25519,
 		cmdWG,
 		cmdMLDSA65,
-		cmdMLKEM768,
-		cmdVLESSEnc,
 	)
 }

main/commands/all/convert/protobuf.go

@@ -3,7 +3,6 @@ package convert
 import (
 	"fmt"
 	"os"
-	"strings"
 
 	"github.com/xtls/xray-core/common/cmdarg"
 	creflect "github.com/xtls/xray-core/common/reflect"
@@ -15,18 +14,15 @@ import (
 
 var cmdProtobuf = &base.Command{
 	CustomFlags: true,
-	UsageLine:   "{{.Exec}} convert pb [-outpbfile file] [-debug] [-type] [json file] [json file] ...",
+	UsageLine:   "{{.Exec}} convert pb [-debug] [-type] [json file] [json file] ...",
 	Short:       "Convert multiple json configs to protobuf",
 	Long: `
-Convert multiple configs to ProtoBuf. JSON, YAML and TOML can be used.
+Convert multiple json configs to protobuf.
 
 Arguments:
 
-	-o file, -outpbfile file
-		Write the ProtoBuf output (eg. mix.pb) to specified file location.
-
 	-d, -debug
-		Show mix.pb as JSON format.
+		Show mix.pb as json.
 		FOR DEBUGGING ONLY!
 		DO NOT PASS THIS OUTPUT TO XRAY-CORE!
 
@@ -35,20 +31,16 @@ Arguments:
 
 Examples:
 
-    {{.Exec}} convert pb -outpbfile output.pb config.json c1.json c2.json c3.json
+    {{.Exec}} convert pb config.json c1.json c2.json c3.json > mix.pb
-    {{.Exec}} convert pb -debug mix.pb
 	`,
 	Run: executeConvertConfigsToProtobuf,
 }
 
 func executeConvertConfigsToProtobuf(cmd *base.Command, args []string) {
 
-	var optFile string
 	var optDump bool
 	var optType bool
 
-	cmd.Flag.StringVar(&optFile, "o", "", "")
-	cmd.Flag.StringVar(&optFile, "outpbfile", "", "")
 	cmd.Flag.BoolVar(&optDump, "d", false, "")
 	cmd.Flag.BoolVar(&optDump, "debug", false, "")
 	cmd.Flag.BoolVar(&optType, "t", false, "")
@@ -60,17 +52,6 @@ func executeConvertConfigsToProtobuf(cmd *base.Command, args []string) {
 		unnamedArgs.Set(v)
 	}
 
-	if len(optFile) > 0 {
-		switch core.GetFormatByExtension(getFileExtension(optFile)){
-		case "protobuf", "":
-			fmt.Println("Output ProtoBuf file is ", optFile)
-		default:
-			base.Fatalf("-outpbfile followed by a possible original config.")
-		}
-	} else if !optDump {
-		base.Fatalf("-outpbfile not specified")
-	}
-
 	if len(unnamedArgs) < 1 {
 		base.Fatalf("invalid config list length: %d", len(unnamedArgs))
 	}
@@ -89,28 +70,12 @@ func executeConvertConfigsToProtobuf(cmd *base.Command, args []string) {
 		}
 	}
 
-	if len(optFile) > 0 {
+	bytesConfig, err := proto.Marshal(pbConfig)
-		bytesConfig, err := proto.Marshal(pbConfig)
+	if err != nil {
-		if err != nil {
+		base.Fatalf("failed to marshal proto config: %s", err)
-			base.Fatalf("failed to marshal proto config: %s", err)
+	}
-		}
 
-		f, err := os.Create(optFile)
+	if _, err := os.Stdout.Write(bytesConfig); err != nil {
-		if err != nil {
+		base.Fatalf("failed to write proto config: %s", err)
-			base.Fatalf("failed to create proto file: %s", err)
-		}
-		defer f.Close()
-
-		if _, err := f.Write(bytesConfig); err != nil {
-			base.Fatalf("failed to write proto file: %s", err)
-		}
 	}
 }
-
-func getFileExtension(filename string) string {
-	idx := strings.LastIndexByte(filename, '.')
-	if idx == -1 {
-		return ""
-	}
-	return filename[idx+1:]
-}

main/commands/all/curve25519.go

@@ -1,15 +1,17 @@
 package all
 
 import (
-	"crypto/ecdh"
 	"crypto/rand"
 	"encoding/base64"
 	"fmt"
 
-	"lukechampine.com/blake3"
+	"golang.org/x/crypto/curve25519"
 )
 
 func Curve25519Genkey(StdEncoding bool, input_base64 string) {
+	var output string
+	var err error
+	var privateKey, publicKey []byte
 	var encoding *base64.Encoding
 	if *input_stdEncoding || StdEncoding {
 		encoding = base64.StdEncoding
@@ -17,47 +19,40 @@ func Curve25519Genkey(StdEncoding bool, input_base64 string) {
 		encoding = base64.RawURLEncoding
 	}
 
-	var privateKey []byte
 	if len(input_base64) > 0 {
-		privateKey, _ = encoding.DecodeString(input_base64)
+		privateKey, err = encoding.DecodeString(input_base64)
-		if len(privateKey) != 32 {
+		if err != nil {
-			fmt.Println("Invalid length of X25519 private key.")
+			output = err.Error()
-			return
+			goto out
+		}
+		if len(privateKey) != curve25519.ScalarSize {
+			output = "Invalid length of private key."
+			goto out
 		}
 	}
-	privateKey, password, hash32, err := genCurve25519(privateKey)
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-	fmt.Printf("PrivateKey: %v\nPassword: %v\nHash32: %v\n",
-		encoding.EncodeToString(privateKey),
-		encoding.EncodeToString(password),
-		encoding.EncodeToString(hash32[:]))
-}
 
-func genCurve25519(inputPrivateKey []byte) (privateKey []byte, password []byte, hash32 [32]byte, returnErr error) {
-	if len(inputPrivateKey) > 0 {
-		privateKey = inputPrivateKey
-	}
 	if privateKey == nil {
-		privateKey = make([]byte, 32)
+		privateKey = make([]byte, curve25519.ScalarSize)
-		rand.Read(privateKey)
+		if _, err = rand.Read(privateKey); err != nil {
+			output = err.Error()
+			goto out
+		}
 	}
 
 	// Modify random bytes using algorithm described at:
-	// https://cr.yp.to/ecdh.html
+	// https://cr.yp.to/ecdh.html.
-	// (Just to make sure printing the real private key)
 	privateKey[0] &= 248
 	privateKey[31] &= 127
 	privateKey[31] |= 64
 
-	key, err := ecdh.X25519().NewPrivateKey(privateKey)
+	if publicKey, err = curve25519.X25519(privateKey, curve25519.Basepoint); err != nil {
-	if err != nil {
+		output = err.Error()
-		returnErr = err
+		goto out
-		return
 	}
-	password = key.PublicKey().Bytes()
+
-	hash32 = blake3.Sum256(password)
+	output = fmt.Sprintf("Private key: %v\nPublic key: %v",
-	return
+		encoding.EncodeToString(privateKey),
+		encoding.EncodeToString(publicKey))
+out:
+	fmt.Println(output)
 }

main/commands/all/mldsa65.go

@@ -11,9 +11,9 @@ import (
 
 var cmdMLDSA65 = &base.Command{
 	UsageLine: `{{.Exec}} mldsa65 [-i "seed (base64.RawURLEncoding)"]`,
-	Short:     `Generate key pair for ML-DSA-65 post-quantum signature (REALITY)`,
+	Short:     `Generate key pair for ML-DSA-65 post-quantum signature`,
 	Long: `
-Generate key pair for ML-DSA-65 post-quantum signature (REALITY).
+Generate key pair for ML-DSA-65 post-quantum signature.
 
 Random: {{.Exec}} mldsa65
 
@@ -25,22 +25,18 @@ func init() {
 	cmdMLDSA65.Run = executeMLDSA65 // break init loop
 }
 
-var input_mldsa65 = cmdMLDSA65.Flag.String("i", "", "")
+var input_seed = cmdMLDSA65.Flag.String("i", "", "")
 
 func executeMLDSA65(cmd *base.Command, args []string) {
 	var seed [32]byte
-	if len(*input_mldsa65) > 0 {
+	if len(*input_seed) > 0 {
-		s, _ := base64.RawURLEncoding.DecodeString(*input_mldsa65)
+		s, _ := base64.RawURLEncoding.DecodeString(*input_seed)
-		if len(s) != 32 {
-			fmt.Println("Invalid length of ML-DSA-65 seed.")
-			return
-		}
 		seed = [32]byte(s)
 	} else {
 		rand.Read(seed[:])
 	}
 	pub, _ := mldsa65.NewKeyFromSeed(&seed)
-	fmt.Printf("Seed: %v\nVerify: %v\n",
+	fmt.Printf("Seed: %v\nVerify: %v",
 		base64.RawURLEncoding.EncodeToString(seed[:]),
 		base64.RawURLEncoding.EncodeToString(pub.Bytes()))
 }

main/commands/all/mlkem768.go

@@ -1,60 +0,0 @@
-package all
-
-import (
-	"crypto/mlkem"
-	"crypto/rand"
-	"encoding/base64"
-	"fmt"
-
-	"github.com/xtls/xray-core/main/commands/base"
-	"lukechampine.com/blake3"
-)
-
-var cmdMLKEM768 = &base.Command{
-	UsageLine: `{{.Exec}} mlkem768 [-i "seed (base64.RawURLEncoding)"]`,
-	Short:     `Generate key pair for ML-KEM-768 post-quantum key exchange (VLESS Encryption)`,
-	Long: `
-Generate key pair for ML-KEM-768 post-quantum key exchange (VLESS Encryption).
-
-Random: {{.Exec}} mlkem768
-
-From seed: {{.Exec}} mlkem768 -i "seed (base64.RawURLEncoding)"
-`,
-}
-
-func init() {
-	cmdMLKEM768.Run = executeMLKEM768 // break init loop
-}
-
-var input_mlkem768 = cmdMLKEM768.Flag.String("i", "", "")
-
-func executeMLKEM768(cmd *base.Command, args []string) {
-	var seed [64]byte
-	if len(*input_mlkem768) > 0 {
-		s, _ := base64.RawURLEncoding.DecodeString(*input_mlkem768)
-		if len(s) != 64 {
-			fmt.Println("Invalid length of ML-KEM-768 seed.")
-			return
-		}
-		seed = [64]byte(s)
-	} else {
-		rand.Read(seed[:])
-	}
-	seed, client, hash32 := genMLKEM768(&seed)
-	fmt.Printf("Seed: %v\nClient: %v\nHash32: %v\n",
-		base64.RawURLEncoding.EncodeToString(seed[:]),
-		base64.RawURLEncoding.EncodeToString(client),
-		base64.RawURLEncoding.EncodeToString(hash32[:]))
-}
-
-func genMLKEM768(inputSeed *[64]byte) (seed [64]byte, client []byte, hash32 [32]byte) {
-	if inputSeed == nil {
-		rand.Read(seed[:])
-	} else {
-		seed = *inputSeed
-	}
-	key, _ := mlkem.NewDecapsulationKey768(seed[:])
-	client = key.EncapsulationKey().Bytes()
-	hash32 = blake3.Sum256(client)
-	return
-}

main/commands/all/tls/ping.go

@@ -92,7 +92,7 @@ func executePing(cmd *base.Command, args []string) {
 	fmt.Println("-------------------")
 	fmt.Println("Pinging with SNI")
 	{
-		tcpConn, err := net.DialTCP("tcp", nil, &net.TCPAddr{IP: ip, Port: TargetPort})
+		tcpConn, err := net.DialTCP("tcp", nil, &net.TCPAddr{IP: ip, Port: 443})
 		if err != nil {
 			base.Fatalf("Failed to dial tcp: %s", err)
 		}

main/commands/all/uuid.go

@@ -9,9 +9,9 @@ import (
 
 var cmdUUID = &base.Command{
 	UsageLine: `{{.Exec}} uuid [-i "example"]`,
-	Short:     `Generate UUIDv4 or UUIDv5 (VLESS)`,
+	Short:     `Generate UUIDv4 or UUIDv5`,
 	Long: `
-Generate UUIDv4 or UUIDv5 (VLESS).
+Generate UUIDv4 or UUIDv5.
 
 UUIDv4 (random): {{.Exec}} uuid
 

main/commands/all/vlessenc.go

@@ -1,41 +0,0 @@
-package all
-
-import (
-	"encoding/base64"
-	"fmt"
-	"strings"
-
-	"github.com/xtls/xray-core/main/commands/base"
-)
-
-var cmdVLESSEnc = &base.Command{
-	UsageLine: `{{.Exec}} vlessenc`,
-	Short:     `Generate decryption/encryption json pair (VLESS Encryption)`,
-	Long: `
-Generate decryption/encryption json pair (VLESS Encryption).
-`,
-}
-
-func init() {
-	cmdVLESSEnc.Run = executeVLESSEnc // break init loop
-}
-
-func executeVLESSEnc(cmd *base.Command, args []string) {
-	privateKey, password, _, _ := genCurve25519(nil)
-	serverKey := base64.RawURLEncoding.EncodeToString(privateKey)
-	clientKey := base64.RawURLEncoding.EncodeToString(password)
-	decryption := generateDotConfig("mlkem768x25519plus", "native", "600s", serverKey)
-	encryption := generateDotConfig("mlkem768x25519plus", "native", "0rtt", clientKey)
-	seed, client, _ := genMLKEM768(nil)
-	serverKeyPQ := base64.RawURLEncoding.EncodeToString(seed[:])
-	clientKeyPQ := base64.RawURLEncoding.EncodeToString(client)
-	decryptionPQ := generateDotConfig("mlkem768x25519plus", "native", "600s", serverKeyPQ)
-	encryptionPQ := generateDotConfig("mlkem768x25519plus", "native", "0rtt", clientKeyPQ)
-	fmt.Printf("Choose one Authentication to use, do not mix them. Ephemeral key exchange is Post-Quantum safe anyway.\n\n")
-	fmt.Printf("Authentication: X25519, not Post-Quantum\n\"decryption\": \"%v\"\n\"encryption\": \"%v\"\n\n", decryption, encryption)
-	fmt.Printf("Authentication: ML-KEM-768, Post-Quantum\n\"decryption\": \"%v\"\n\"encryption\": \"%v\"\n", decryptionPQ, encryptionPQ)
-}
-
-func generateDotConfig(fields ...string) string {
-	return strings.Join(fields, ".")
-}

main/commands/all/wg.go

@@ -6,9 +6,9 @@ import (
 
 var cmdWG = &base.Command{
 	UsageLine: `{{.Exec}} wg [-i "private key (base64.StdEncoding)"]`,
-	Short:     `Generate key pair for X25519 key exchange (WireGuard)`,
+	Short:     `Generate key pair for wireguard key exchange`,
 	Long: `
-Generate key pair for X25519 key exchange (WireGuard).
+Generate key pair for wireguard key exchange.
 
 Random: {{.Exec}} wg
 

main/commands/all/x25519.go

@@ -6,9 +6,9 @@ import (
 
 var cmdX25519 = &base.Command{
 	UsageLine: `{{.Exec}} x25519 [-i "private key (base64.RawURLEncoding)"] [--std-encoding]`,
-	Short:     `Generate key pair for X25519 key exchange (REALITY, VLESS Encryption)`,
+	Short:     `Generate key pair for x25519 key exchange`,
 	Long: `
-Generate key pair for X25519 key exchange (REALITY, VLESS Encryption).
+Generate key pair for x25519 key exchange.
 
 Random: {{.Exec}} x25519
 

main/run.go

@@ -182,15 +182,12 @@ func getConfigFilePath(verbose bool) cmdarg.Arg {
 	}
 
 	if workingDir, err := os.Getwd(); err == nil {
-		suffixes := []string{".json", ".jsonc", ".toml", ".yaml", ".yml"}
+		configFile := filepath.Join(workingDir, "config.json")
-		for _, suffix := range suffixes {
+		if fileExists(configFile) {
-			configFile := filepath.Join(workingDir, "config"+suffix)
+			if verbose {
-			if fileExists(configFile) {
+				log.Println("Using default config: ", configFile)
-				if verbose {
-					log.Println("Using default config: ", configFile)
-				}
-				return cmdarg.Arg{configFile}
 			}
+			return cmdarg.Arg{configFile}
 		}
 	}
 

proxy/dns/dns.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	go_errors "errors"
 	"io"
-	"strings"
 	"sync"
 	"time"
 
@@ -169,15 +168,11 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
 	}
 
 	ctx, cancel := context.WithCancel(ctx)
-	terminate := func() {
+	timer := signal.CancelAfterInactivity(ctx, cancel, h.timeout)
-		cancel()
-		conn.Close()
-	}
-	timer := signal.CancelAfterInactivity(ctx, terminate, h.timeout)
-	defer timer.SetTimeout(0)
 
 	request := func() error {
-		defer timer.SetTimeout(0)
+		defer conn.Close()
+
 		for {
 			b, err := reader.ReadMessage()
 			if err == io.EOF {
@@ -195,33 +190,24 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
 				if len(h.blockTypes) > 0 {
 					for _, blocktype := range h.blockTypes {
 						if blocktype == int32(qType) {
-							b.Release()
-							errors.LogInfo(ctx, "blocked type ", qType, " query for domain ", domain)
 							if h.nonIPQuery == "reject" {
-								err := h.rejectNonIPQuery(id, qType, domain, writer)
+								go h.rejectNonIPQuery(id, qType, domain, writer)
-								if err != nil {
-									return err
-								}
 							}
+							errors.LogInfo(ctx, "blocked type ", qType, " query for domain ", domain)
 							return nil
 						}
 					}
 				}
 				if isIPQuery {
-					b.Release()
+					go h.handleIPQuery(id, qType, domain, writer)
-					go h.handleIPQuery(id, qType, domain, writer, timer)
-					continue
 				}
-				if h.nonIPQuery == "drop" {
+				if isIPQuery || h.nonIPQuery == "drop" {
 					b.Release()
 					continue
 				}
 				if h.nonIPQuery == "reject" {
+					go h.rejectNonIPQuery(id, qType, domain, writer)
 					b.Release()
-					err := h.rejectNonIPQuery(id, qType, domain, writer)
-					if err != nil {
-						return err
-					}
 					continue
 				}
 			}
@@ -233,7 +219,6 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
 	}
 
 	response := func() error {
-		defer timer.SetTimeout(0)
 		for {
 			b, err := connReader.ReadMessage()
 			if err == io.EOF {
@@ -259,7 +244,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.
 	return nil
 }
 
-func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string, writer dns_proto.MessageWriter, timer *signal.ActivityTimer) {
+func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string, writer dns_proto.MessageWriter) {
 	var ips []net.IP
 	var err error
 
@@ -334,21 +319,16 @@ func (h *Handler) handleIPQuery(id uint16, qType dnsmessage.Type, domain string,
 	if err != nil {
 		errors.LogInfoInner(context.Background(), err, "pack message")
 		b.Release()
-		timer.SetTimeout(0)
+		return
 	}
 	b.Resize(0, int32(len(msgBytes)))
 
 	if err := writer.WriteMessage(b); err != nil {
 		errors.LogInfoInner(context.Background(), err, "write IP answer")
-		timer.SetTimeout(0)
 	}
 }
 
-func (h *Handler) rejectNonIPQuery(id uint16, qType dnsmessage.Type, domain string, writer dns_proto.MessageWriter) error {
+func (h *Handler) rejectNonIPQuery(id uint16, qType dnsmessage.Type, domain string, writer dns_proto.MessageWriter) {
-	domainT := strings.TrimSuffix(domain, ".")
-	if domainT == "" {
-		return errors.New("empty domain name")
-	}
 	b := buf.New()
 	rawBytes := b.Extend(buf.Size)
 	builder := dnsmessage.NewBuilder(rawBytes[:0], dnsmessage.Header{
@@ -369,22 +349,20 @@ func (h *Handler) rejectNonIPQuery(id uint16, qType dnsmessage.Type, domain stri
 	if err != nil {
 		errors.LogInfo(context.Background(), "unexpected domain ", domain, " when building reject message: ", err)
 		b.Release()
-		return err
+		return
 	}
 
 	msgBytes, err := builder.Finish()
 	if err != nil {
 		errors.LogInfoInner(context.Background(), err, "pack reject message")
 		b.Release()
-		return err
+		return
 	}
 	b.Resize(0, int32(len(msgBytes)))
 
 	if err := writer.WriteMessage(b); err != nil {
 		errors.LogInfoInner(context.Background(), err, "write reject answer")
-		return err
 	}
-	return nil
 }
 
 type outboundConn struct {
@@ -393,7 +371,6 @@ type outboundConn struct {
 
 	conn      net.Conn
 	connReady chan struct{}
-	closed    bool
 }
 
 func (c *outboundConn) dial() error {
@@ -408,16 +385,12 @@ func (c *outboundConn) dial() error {
 
 func (c *outboundConn) Write(b []byte) (int, error) {
 	c.access.Lock()
-	if c.closed {
-		c.access.Unlock()
-		return 0, errors.New("outbound connection closed")
-	}
 
 	if c.conn == nil {
 		if err := c.dial(); err != nil {
 			c.access.Unlock()
 			errors.LogWarningInner(context.Background(), err, "failed to dial outbound connection")
-			return 0, err
+			return len(b), nil
 		}
 	}
 
@@ -427,27 +400,24 @@ func (c *outboundConn) Write(b []byte) (int, error) {
 }
 
 func (c *outboundConn) Read(b []byte) (int, error) {
+	var conn net.Conn
 	c.access.Lock()
-	if c.closed {
+	conn = c.conn
-		c.access.Unlock()
+	c.access.Unlock()
-		return 0, io.EOF
-	}
 
-	if c.conn == nil {
+	if conn == nil {
-		c.access.Unlock()
 		_, open := <-c.connReady
 		if !open {
 			return 0, io.EOF
 		}
-		return c.conn.Read(b)
+		conn = c.conn
 	}
-	c.access.Unlock()
+
-	return c.conn.Read(b)
+	return conn.Read(b)
 }
 
 func (c *outboundConn) Close() error {
 	c.access.Lock()
-	c.closed = true
 	close(c.connReady)
 	if c.conn != nil {
 		c.conn.Close()

proxy/dokodemo/dokodemo.go

@@ -2,8 +2,10 @@ package dokodemo
 
 import (
 	"context"
+	"runtime"
 	"strconv"
 	"strings"
+	"sync/atomic"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
@@ -12,10 +14,11 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/signal"
+	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
-	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
 )
@@ -141,11 +144,39 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 	})
 	errors.LogInfo(ctx, "received request for ", conn.RemoteAddr())
 
-	var reader buf.Reader
+	plcy := d.policy()
-	if dest.Network == net.Network_TCP {
+	ctx, cancel := context.WithCancel(ctx)
-		reader = buf.NewReader(conn)
+	timer := signal.CancelAfterInactivity(ctx, cancel, plcy.Timeouts.ConnectionIdle)
-	} else {
+
-		reader = buf.NewPacketReader(conn)
+	if inbound != nil {
+		inbound.Timer = timer
+	}
+
+	ctx = policy.ContextWithBufferPolicy(ctx, plcy.Buffer)
+	link, err := dispatcher.Dispatch(ctx, dest)
+	if err != nil {
+		return errors.New("failed to dispatch request").Base(err)
+	}
+
+	requestCount := int32(1)
+	requestDone := func() error {
+		defer func() {
+			if atomic.AddInt32(&requestCount, -1) == 0 {
+				timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
+			}
+		}()
+
+		var reader buf.Reader
+		if dest.Network == net.Network_UDP {
+			reader = buf.NewPacketReader(conn)
+		} else {
+			reader = buf.NewReader(conn)
+		}
+		if err := buf.Copy(reader, link.Writer, buf.UpdateActivity(timer)); err != nil {
+			return errors.New("failed to transport request").Base(err)
+		}
+
+		return nil
 	}
 
 	var writer buf.Writer
@@ -177,17 +208,72 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st
 				return err
 			}
 			writer = NewPacketWriter(pConn, &dest, mark, back)
-			defer writer.(*PacketWriter).Close() // close fake UDP conns
+			defer func() {
+				runtime.Gosched()
+				common.Interrupt(link.Reader) // maybe duplicated
+				runtime.Gosched()
+				writer.(*PacketWriter).Close() // close fake UDP conns
+			}()
+			/*
+				sockopt := &internet.SocketConfig{
+					Tproxy: internet.SocketConfig_TProxy,
+				}
+				if dest.Address.Family().IsIP() {
+					sockopt.BindAddress = dest.Address.IP()
+					sockopt.BindPort = uint32(dest.Port)
+				}
+				if d.sockopt != nil {
+					sockopt.Mark = d.sockopt.Mark
+				}
+				tConn, err := internet.DialSystem(ctx, net.DestinationFromAddr(conn.RemoteAddr()), sockopt)
+				if err != nil {
+					return err
+				}
+				defer tConn.Close()
+
+				writer = &buf.SequentialWriter{Writer: tConn}
+				tReader := buf.NewPacketReader(tConn)
+				requestCount++
+				tproxyRequest = func() error {
+					defer func() {
+						if atomic.AddInt32(&requestCount, -1) == 0 {
+							timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
+						}
+					}()
+					if err := buf.Copy(tReader, link.Writer, buf.UpdateActivity(timer)); err != nil {
+						return errors.New("failed to transport request (TPROXY conn)").Base(err)
+					}
+					return nil
+				}
+			*/
 		}
 	}
 
-	if err := dispatcher.DispatchLink(ctx, dest, &transport.Link{
+	responseDone := func() error {
-		Reader: reader,
+		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
-		Writer: writer},
+
-	); err != nil {
+		if network == net.Network_UDP && destinationOverridden {
-		return errors.New("failed to dispatch request").Base(err)
+			buf.Copy(link.Reader, writer) // respect upload's timeout
+			return nil
+		}
+
+		if err := buf.Copy(link.Reader, writer, buf.UpdateActivity(timer)); err != nil {
+			return errors.New("failed to transport response").Base(err)
+		}
+		return nil
 	}
-	return nil // Unlike Dispatch(), DispatchLink() will not return until the outbound finishes Process()
+
+	if err := task.Run(ctx,
+		task.OnSuccess(func() error { return task.Run(ctx, requestDone) }, task.Close(link.Writer)),
+		responseDone); err != nil {
+		runtime.Gosched()
+		common.Interrupt(link.Writer)
+		runtime.Gosched()
+		common.Interrupt(link.Reader)
+		return errors.New("connection ends").Base(err)
+	}
+
+	return nil
 }
 
 func NewPacketWriter(conn net.PacketConn, d *net.Destination, mark int, back *net.UDPAddr) buf.Writer {

proxy/freedom/freedom.go

@@ -26,6 +26,7 @@ import (
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/stat"
+	"github.com/xtls/xray-core/transport/internet/tls"
 )
 
 var useSplice bool
@@ -72,7 +73,7 @@ func isValidAddress(addr *net.IPOrDomain) bool {
 	}
 
 	a := addr.AsAddress()
-	return a != net.AnyIP && a != net.AnyIPv6
+	return a != net.AnyIP
 }
 
 // Process implements proxy.Outbound.
@@ -211,14 +212,16 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 	responseDone := func() error {
 		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
-		if destination.Network == net.Network_TCP && useSplice && proxy.IsRAWTransportWithoutSecurity(conn) { // it would be tls conn in special use case of MITM, we need to let link handle traffic
+		if destination.Network == net.Network_TCP {
 			var writeConn net.Conn
 			var inTimer *signal.ActivityTimer
-			if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil {
+			if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil && useSplice {
 				writeConn = inbound.Conn
 				inTimer = inbound.Timer
 			}
-			return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer, inTimer)
+			if !isTLSConn(conn) { // it would be tls conn in special use case of MITM, we need to let link handle traffic
+				return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer, inTimer)
+			}
 		}
 		var reader buf.Reader
 		if destination.Network == net.Network_TCP {
@@ -243,6 +246,22 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 	return nil
 }
 
+func isTLSConn(conn stat.Connection) bool {
+	if conn != nil {
+		statConn, ok := conn.(*stat.CounterConnection)
+		if ok {
+			conn = statConn.Connection
+		}
+		if _, ok := conn.(*tls.Conn); ok {
+			return true
+		}
+		if _, ok := conn.(*tls.UConn); ok {
+			return true
+		}
+	}
+	return false
+}
+
 func NewPacketReader(conn net.Conn, UDPOverride net.Destination, DialDest net.Destination) buf.Reader {
 	iConn := conn
 	statConn, ok := iConn.(*stat.CounterConnection)
@@ -399,7 +418,7 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 					}
 				}
 			}
-			destAddr := b.UDP.RawNetAddr()
+			destAddr, _ := net.ResolveUDPAddr("udp", b.UDP.NetAddr())
 			if destAddr == nil {
 				b.Release()
 				continue

proxy/http/client.go

@@ -31,7 +31,7 @@ import (
 )
 
 type Client struct {
-	server        *protocol.ServerSpec
+	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 	header        []*Header
 }
@@ -48,17 +48,21 @@ var (
 
 // NewClient create a new http client based on the given config.
 func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
-	if config.Server == nil {
+	serverList := protocol.NewServerList()
-		return nil, errors.New(`no target server found`)
+	for _, rec := range config.Server {
+		s, err := protocol.NewServerSpecFromPB(rec)
+		if err != nil {
+			return nil, errors.New("failed to get server spec").Base(err)
+		}
+		serverList.AddServer(s)
 	}
-	server, err := protocol.NewServerSpecFromPB(config.Server)
+	if serverList.Size() == 0 {
-	if err != nil {
+		return nil, errors.New("0 target server")
-		return nil, errors.New("failed to get server spec").Base(err)
 	}
 
 	v := core.MustFromContext(ctx)
 	return &Client{
-		server:        server,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 		header:        config.Header,
 	}, nil
@@ -80,9 +84,7 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 		return errors.New("UDP is not supported by HTTP outbound")
 	}
 
-	server := c.server
+	var user *protocol.MemoryUser
-	dest := server.Destination
-	user := server.User
 	var conn stat.Connection
 
 	mbuf, _ := link.Reader.ReadMultiBuffer()
@@ -100,6 +102,10 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	}
 
 	if err := retry.ExponentialBackoff(5, 100).On(func() error {
+		server := c.serverPicker.PickServer()
+		dest := server.Destination()
+		user = server.PickUser()
+
 		netConn, err := setUpHTTPTunnel(ctx, dest, targetAddr, user, dialer, header, firstPayload)
 		if netConn != nil {
 			if _, ok := netConn.(*http2Conn); !ok {

proxy/http/config.pb.go

@@ -196,8 +196,8 @@ type ClientConfig struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Sever is a list of HTTP server addresses.
-	Server *protocol.ServerEndpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
+	Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
-	Header []*Header                `protobuf:"bytes,2,rep,name=header,proto3" json:"header,omitempty"`
+	Header []*Header                  `protobuf:"bytes,2,rep,name=header,proto3" json:"header,omitempty"`
 }
 
 func (x *ClientConfig) Reset() {
@@ -230,7 +230,7 @@ func (*ClientConfig) Descriptor() ([]byte, []int) {
 	return file_proxy_http_config_proto_rawDescGZIP(), []int{3}
 }
 
-func (x *ClientConfig) GetServer() *protocol.ServerEndpoint {
+func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
 	if x != nil {
 		return x.Server
 	}
@@ -275,7 +275,7 @@ var file_proxy_http_config_proto_rawDesc = []byte{
 	0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05,
 	0x76, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x7d, 0x0a, 0x0c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x43,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3c, 0x0a, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
+	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, 0x06, 0x73, 0x65, 0x72,
 	0x76, 0x65, 0x72, 0x12, 0x2f, 0x0a, 0x06, 0x68, 0x65, 0x61, 0x64, 0x65, 0x72, 0x18, 0x02, 0x20,

proxy/http/config.proto

@@ -28,6 +28,6 @@ message Header {
 // ClientConfig is the protobuf config for HTTP proxy client.
 message ClientConfig {
   // Sever is a list of HTTP server addresses.
-  xray.common.protocol.ServerEndpoint server = 1;
+  repeated xray.common.protocol.ServerEndpoint server = 1;
   repeated Header header = 2;
 }

proxy/http/server.go

@@ -18,12 +18,11 @@ import (
 	"github.com/xtls/xray-core/common/protocol"
 	http_proto "github.com/xtls/xray-core/common/protocol/http"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
-	"github.com/xtls/xray-core/proxy"
-	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet/stat"
 )
 
@@ -96,9 +95,6 @@ func (s *Server) ProcessWithFirstbyte(ctx context.Context, network net.Network,
 	inbound.User = &protocol.MemoryUser{
 		Level: s.config.UserLevel,
 	}
-	if !proxy.IsRAWTransportWithoutSecurity(conn) {
-		inbound.CanSpliceCopy = 3
-	}
 	var reader *bufio.Reader
 	if len(firstbyte) > 0 {
 		readerWithoutFirstbyte := bufio.NewReaderSize(readerOnly{conn}, buf.Size)
@@ -173,31 +169,62 @@ Start:
 	return err
 }
 
-func (s *Server) handleConnect(ctx context.Context, _ *http.Request, buffer *bufio.Reader, conn stat.Connection, dest net.Destination, dispatcher routing.Dispatcher, inbound *session.Inbound) error {
+func (s *Server) handleConnect(ctx context.Context, _ *http.Request, reader *bufio.Reader, conn stat.Connection, dest net.Destination, dispatcher routing.Dispatcher, inbound *session.Inbound) error {
 	_, err := conn.Write([]byte("HTTP/1.1 200 Connection established\r\n\r\n"))
 	if err != nil {
 		return errors.New("failed to write back OK response").Base(err)
 	}
 
-	reader := buf.NewReader(conn)
+	plcy := s.policy()
-	if buffer.Buffered() > 0 {
+	ctx, cancel := context.WithCancel(ctx)
-		payload, err := buf.ReadFrom(io.LimitReader(buffer, int64(buffer.Buffered())))
+	timer := signal.CancelAfterInactivity(ctx, cancel, plcy.Timeouts.ConnectionIdle)
+
+	if inbound != nil {
+		inbound.Timer = timer
+	}
+
+	ctx = policy.ContextWithBufferPolicy(ctx, plcy.Buffer)
+	link, err := dispatcher.Dispatch(ctx, dest)
+	if err != nil {
+		return err
+	}
+
+	if reader.Buffered() > 0 {
+		payload, err := buf.ReadFrom(io.LimitReader(reader, int64(reader.Buffered())))
 		if err != nil {
 			return err
 		}
-		reader = &buf.BufferedReader{Reader: reader, Buffer: payload}
+		if err := link.Writer.WriteMultiBuffer(payload); err != nil {
-		buffer = nil
+			return err
+		}
+		reader = nil
 	}
 
-	if inbound.CanSpliceCopy == 2 {
+	requestDone := func() error {
+		defer timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
+
+		return buf.Copy(buf.NewReader(conn), link.Writer, buf.UpdateActivity(timer))
+	}
+
+	responseDone := func() error {
 		inbound.CanSpliceCopy = 1
+		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
+
+		v2writer := buf.NewWriter(conn)
+		if err := buf.Copy(link.Reader, v2writer, buf.UpdateActivity(timer)); err != nil {
+			return err
+		}
+
+		return nil
 	}
-	if err := dispatcher.DispatchLink(ctx, dest, &transport.Link{
+
-		Reader: reader,
+	closeWriter := task.OnSuccess(requestDone, task.Close(link.Writer))
-		Writer: buf.NewWriter(conn)},
+	if err := task.Run(ctx, closeWriter, responseDone); err != nil {
-	); err != nil {
+		common.Interrupt(link.Reader)
-		return errors.New("failed to dispatch request").Base(err)
+		common.Interrupt(link.Writer)
+		return errors.New("connection ends").Base(err)
 	}
+
 	return nil
 }
 

proxy/proxy.go

@@ -25,7 +25,6 @@ import (
 	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/features/stats"
-	"github.com/xtls/xray-core/proxy/vless/encryption"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/reality"
@@ -177,108 +176,62 @@ type VisionReader struct {
 	trafficState *TrafficState
 	ctx          context.Context
 	isUplink     bool
-	conn         net.Conn
-	input        *bytes.Reader
-	rawInput     *bytes.Buffer
-	ob           *session.Outbound
-
-	// internal
-	directReadCounter stats.Counter
 }
 
-func NewVisionReader(reader buf.Reader, trafficState *TrafficState, isUplink bool, ctx context.Context, conn net.Conn, input *bytes.Reader, rawInput *bytes.Buffer, ob *session.Outbound) *VisionReader {
+func NewVisionReader(reader buf.Reader, state *TrafficState, isUplink bool, context context.Context) *VisionReader {
 	return &VisionReader{
 		Reader:       reader,
-		trafficState: trafficState,
+		trafficState: state,
-		ctx:          ctx,
+		ctx:          context,
 		isUplink:     isUplink,
-		conn:         conn,
-		input:        input,
-		rawInput:     rawInput,
-		ob:           ob,
 	}
 }
 
 func (w *VisionReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
 	buffer, err := w.Reader.ReadMultiBuffer()
-	if buffer.IsEmpty() {
+	if !buffer.IsEmpty() {
-		return buffer, err
+		var withinPaddingBuffers *bool
-	}
+		var remainingContent *int32
-
+		var remainingPadding *int32
-	var withinPaddingBuffers *bool
+		var currentCommand *int
-	var remainingContent *int32
+		var switchToDirectCopy *bool
-	var remainingPadding *int32
+		if w.isUplink {
-	var currentCommand *int
+			withinPaddingBuffers = &w.trafficState.Inbound.WithinPaddingBuffers
-	var switchToDirectCopy *bool
+			remainingContent = &w.trafficState.Inbound.RemainingContent
-	if w.isUplink {
+			remainingPadding = &w.trafficState.Inbound.RemainingPadding
-		withinPaddingBuffers = &w.trafficState.Inbound.WithinPaddingBuffers
+			currentCommand = &w.trafficState.Inbound.CurrentCommand
-		remainingContent = &w.trafficState.Inbound.RemainingContent
+			switchToDirectCopy = &w.trafficState.Inbound.UplinkReaderDirectCopy
-		remainingPadding = &w.trafficState.Inbound.RemainingPadding
-		currentCommand = &w.trafficState.Inbound.CurrentCommand
-		switchToDirectCopy = &w.trafficState.Inbound.UplinkReaderDirectCopy
-	} else {
-		withinPaddingBuffers = &w.trafficState.Outbound.WithinPaddingBuffers
-		remainingContent = &w.trafficState.Outbound.RemainingContent
-		remainingPadding = &w.trafficState.Outbound.RemainingPadding
-		currentCommand = &w.trafficState.Outbound.CurrentCommand
-		switchToDirectCopy = &w.trafficState.Outbound.DownlinkReaderDirectCopy
-	}
-
-	if *switchToDirectCopy {
-		if w.directReadCounter != nil {
-			w.directReadCounter.Add(int64(buffer.Len()))
-		}
-		return buffer, err
-	}
-
-	if *withinPaddingBuffers || w.trafficState.NumberOfPacketToFilter > 0 {
-		mb2 := make(buf.MultiBuffer, 0, len(buffer))
-		for _, b := range buffer {
-			newbuffer := XtlsUnpadding(b, w.trafficState, w.isUplink, w.ctx)
-			if newbuffer.Len() > 0 {
-				mb2 = append(mb2, newbuffer)
-			}
-		}
-		buffer = mb2
-		if *remainingContent > 0 || *remainingPadding > 0 || *currentCommand == 0 {
-			*withinPaddingBuffers = true
-		} else if *currentCommand == 1 {
-			*withinPaddingBuffers = false
-		} else if *currentCommand == 2 {
-			*withinPaddingBuffers = false
-			*switchToDirectCopy = true
 		} else {
-			errors.LogInfo(w.ctx, "XtlsRead unknown command ", *currentCommand, buffer.Len())
+			withinPaddingBuffers = &w.trafficState.Outbound.WithinPaddingBuffers
+			remainingContent = &w.trafficState.Outbound.RemainingContent
+			remainingPadding = &w.trafficState.Outbound.RemainingPadding
+			currentCommand = &w.trafficState.Outbound.CurrentCommand
+			switchToDirectCopy = &w.trafficState.Outbound.DownlinkReaderDirectCopy
 		}
-	}
-	if w.trafficState.NumberOfPacketToFilter > 0 {
-		XtlsFilterTls(buffer, w.trafficState, w.ctx)
-	}
 
-	if *switchToDirectCopy {
+		if *withinPaddingBuffers || w.trafficState.NumberOfPacketToFilter > 0 {
-		// XTLS Vision processes TLS-like conn's input and rawInput
+			mb2 := make(buf.MultiBuffer, 0, len(buffer))
-		if inputBuffer, err := buf.ReadFrom(w.input); err == nil && !inputBuffer.IsEmpty() {
+			for _, b := range buffer {
-			buffer, _ = buf.MergeMulti(buffer, inputBuffer)
+				newbuffer := XtlsUnpadding(b, w.trafficState, w.isUplink, w.ctx)
-		}
+				if newbuffer.Len() > 0 {
-		if rawInputBuffer, err := buf.ReadFrom(w.rawInput); err == nil && !rawInputBuffer.IsEmpty() {
+					mb2 = append(mb2, newbuffer)
-			buffer, _ = buf.MergeMulti(buffer, rawInputBuffer)
+				}
-		}
-		*w.input = bytes.Reader{} // release memory
-		w.input = nil
-		*w.rawInput = bytes.Buffer{} // release memory
-		w.rawInput = nil
-
-		if inbound := session.InboundFromContext(w.ctx); inbound != nil && inbound.Conn != nil {
-			if w.isUplink && inbound.CanSpliceCopy == 2 {
-				inbound.CanSpliceCopy = 1
 			}
-			if !w.isUplink && w.ob != nil && w.ob.CanSpliceCopy == 2 { // ob need to be passed in due to context can have more than one ob
+			buffer = mb2
-				w.ob.CanSpliceCopy = 1
+			if *remainingContent > 0 || *remainingPadding > 0 || *currentCommand == 0 {
+				*withinPaddingBuffers = true
+			} else if *currentCommand == 1 {
+				*withinPaddingBuffers = false
+			} else if *currentCommand == 2 {
+				*withinPaddingBuffers = false
+				*switchToDirectCopy = true
+			} else {
+				errors.LogInfo(w.ctx, "XtlsRead unknown command ", *currentCommand, buffer.Len())
 			}
 		}
-		readerConn, readCounter, _ := UnwrapRawConn(w.conn)
+		if w.trafficState.NumberOfPacketToFilter > 0 {
-		w.directReadCounter = readCounter
+			XtlsFilterTls(buffer, w.trafficState, w.ctx)
-		w.Reader = buf.NewReader(readerConn)
+		}
 	}
 	return buffer, err
 }
@@ -287,32 +240,28 @@ func (w *VisionReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
 // Note Vision probably only make sense as the inner most layer of writer, since it need assess traffic state from origin proxy traffic
 type VisionWriter struct {
 	buf.Writer
-	trafficState *TrafficState
+	trafficState      *TrafficState
-	ctx          context.Context
+	ctx               context.Context
-	isUplink     bool
+	writeOnceUserUUID []byte
-	conn         net.Conn
+	isUplink          bool
-	ob           *session.Outbound
-
-	// internal
-	writeOnceUserUUID  []byte
-	directWriteCounter stats.Counter
 }
 
-func NewVisionWriter(writer buf.Writer, trafficState *TrafficState, isUplink bool, ctx context.Context, conn net.Conn, ob *session.Outbound) *VisionWriter {
+func NewVisionWriter(writer buf.Writer, state *TrafficState, isUplink bool, context context.Context) *VisionWriter {
-	w := make([]byte, len(trafficState.UserUUID))
+	w := make([]byte, len(state.UserUUID))
-	copy(w, trafficState.UserUUID)
+	copy(w, state.UserUUID)
 	return &VisionWriter{
 		Writer:            writer,
-		trafficState:      trafficState,
+		trafficState:      state,
-		ctx:               ctx,
+		ctx:               context,
 		writeOnceUserUUID: w,
 		isUplink:          isUplink,
-		conn:              conn,
-		ob:                ob,
 	}
 }
 
 func (w *VisionWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	if w.trafficState.NumberOfPacketToFilter > 0 {
+		XtlsFilterTls(mb, w.trafficState, w.ctx)
+	}
 	var isPadding *bool
 	var switchToDirectCopy *bool
 	if w.isUplink {
@@ -322,29 +271,6 @@ func (w *VisionWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 		isPadding = &w.trafficState.Inbound.IsPadding
 		switchToDirectCopy = &w.trafficState.Inbound.DownlinkWriterDirectCopy
 	}
-
-	if *switchToDirectCopy {
-		if inbound := session.InboundFromContext(w.ctx); inbound != nil {
-			if !w.isUplink && inbound.CanSpliceCopy == 2 {
-				inbound.CanSpliceCopy = 1
-			}
-			if w.isUplink && w.ob != nil && w.ob.CanSpliceCopy == 2 {
-				w.ob.CanSpliceCopy = 1
-			}
-		}
-		rawConn, _, writerCounter := UnwrapRawConn(w.conn)
-		w.Writer = buf.NewWriter(rawConn)
-		w.directWriteCounter = writerCounter
-		*switchToDirectCopy = false
-	}
-	if !mb.IsEmpty() && w.directWriteCounter != nil {
-		w.directWriteCounter.Add(int64(mb.Len()))
-	}
-
-	if w.trafficState.NumberOfPacketToFilter > 0 {
-		XtlsFilterTls(mb, w.trafficState, w.ctx)
-	}
-
 	if *isPadding {
 		if len(mb) == 1 && mb[0] == nil {
 			mb[0] = XtlsPadding(nil, CommandPaddingContinue, &w.writeOnceUserUUID, true, w.ctx) // we do a long padding to hide vless header
@@ -598,33 +524,24 @@ func XtlsFilterTls(buffer buf.MultiBuffer, trafficState *TrafficState, ctx conte
 	}
 }
 
-// UnwrapRawConn support unwrap encryption, stats, tls, utls, reality, proxyproto, uds-wrapper conn and get raw tcp/uds conn from it
+// UnwrapRawConn support unwrap stats, tls, utls, reality, proxyproto, uds-wrapper conn and get raw tcp/uds conn from it
 func UnwrapRawConn(conn net.Conn) (net.Conn, stats.Counter, stats.Counter) {
 	var readCounter, writerCounter stats.Counter
 	if conn != nil {
-		isEncryption := false
+		statConn, ok := conn.(*stat.CounterConnection)
-		if commonConn, ok := conn.(*encryption.CommonConn); ok {
+		if ok {
-			conn = commonConn.Conn
-			isEncryption = true
-		}
-		if xorConn, ok := conn.(*encryption.XorConn); ok {
-			return xorConn, nil, nil // full-random xorConn should not be penetrated
-		}
-		if statConn, ok := conn.(*stat.CounterConnection); ok {
 			conn = statConn.Connection
 			readCounter = statConn.ReadCounter
 			writerCounter = statConn.WriteCounter
 		}
-		if !isEncryption { // avoids double penetration
+		if xc, ok := conn.(*tls.Conn); ok {
-			if xc, ok := conn.(*tls.Conn); ok {
+			conn = xc.NetConn()
-				conn = xc.NetConn()
+		} else if utlsConn, ok := conn.(*tls.UConn); ok {
-			} else if utlsConn, ok := conn.(*tls.UConn); ok {
+			conn = utlsConn.NetConn()
-				conn = utlsConn.NetConn()
+		} else if realityConn, ok := conn.(*reality.Conn); ok {
-			} else if realityConn, ok := conn.(*reality.Conn); ok {
+			conn = realityConn.NetConn()
-				conn = realityConn.NetConn()
+		} else if realityUConn, ok := conn.(*reality.UConn); ok {
-			} else if realityUConn, ok := conn.(*reality.UConn); ok {
+			conn = realityUConn.NetConn()
-				conn = realityUConn.NetConn()
-			}
 		}
 		if pc, ok := conn.(*proxyproto.Conn); ok {
 			conn = pc.Raw()
@@ -678,10 +595,10 @@ func CopyRawConnIfExist(ctx context.Context, readerConn net.Conn, writerConn net
 			errors.LogInfo(ctx, "CopyRawConn splice")
 			statWriter, _ := writer.(*dispatcher.SizeStatWriter)
 			//runtime.Gosched() // necessary
-			time.Sleep(time.Millisecond)     // without this, there will be a rare ssl error for freedom splice
+			time.Sleep(time.Millisecond)    // without this, there will be a rare ssl error for freedom splice
-			timer.SetTimeout(24 * time.Hour) // prevent leak, just in case
+			timer.SetTimeout(8 * time.Hour) // prevent leak, just in case
 			if inTimer != nil {
-				inTimer.SetTimeout(24 * time.Hour)
+				inTimer.SetTimeout(8 * time.Hour)
 			}
 			w, err := tc.ReadFrom(readerConn)
 			if readCounter != nil {
@@ -709,29 +626,15 @@ func CopyRawConnIfExist(ctx context.Context, readerConn net.Conn, writerConn net
 			}
 		}
 		if err != nil {
-			if errors.Cause(err) == io.EOF {
-				return nil
-			}
 			return err
 		}
 	}
 }
 
 func readV(ctx context.Context, reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, readCounter stats.Counter) error {
-	errors.LogInfo(ctx, "CopyRawConn (maybe) readv")
+	errors.LogInfo(ctx, "CopyRawConn readv")
 	if err := buf.Copy(reader, writer, buf.UpdateActivity(timer), buf.AddToStatCounter(readCounter)); err != nil {
 		return errors.New("failed to process response").Base(err)
 	}
 	return nil
 }
-
-func IsRAWTransportWithoutSecurity(conn stat.Connection) bool {
-	iConn := conn
-	if statConn, ok := iConn.(*stat.CounterConnection); ok {
-		iConn = statConn.Connection
-	}
-	_, ok1 := iConn.(*proxyproto.Conn)
-	_, ok2 := iConn.(*net.TCPConn)
-	_, ok3 := iConn.(*internet.UnixConnWrapper)
-	return ok1 || ok2 || ok3
-}

proxy/shadowsocks/client.go

@@ -22,23 +22,27 @@ import (
 
 // Client is a inbound handler for Shadowsocks protocol
 type Client struct {
-	server        *protocol.ServerSpec
+	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 }
 
 // NewClient create a new Shadowsocks client.
 func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
-	if config.Server == nil {
+	serverList := protocol.NewServerList()
-		return nil, errors.New(`no target server found`)
+	for _, rec := range config.Server {
+		s, err := protocol.NewServerSpecFromPB(rec)
+		if err != nil {
+			return nil, errors.New("failed to parse server spec").Base(err)
+		}
+		serverList.AddServer(s)
 	}
-	server, err := protocol.NewServerSpecFromPB(config.Server)
+	if serverList.Size() == 0 {
-	if err != nil {
+		return nil, errors.New("0 server")
-		return nil, errors.New("failed to get server spec").Base(err)
 	}
 
 	v := core.MustFromContext(ctx)
 	client := &Client{
-		server:        server,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 	}
 	return client, nil
@@ -56,12 +60,13 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	destination := ob.Target
 	network := destination.Network
 
-	server := c.server
+	var server *protocol.ServerSpec
-	dest := server.Destination
-	dest.Network = network
 	var conn stat.Connection
 
 	err := retry.ExponentialBackoff(5, 100).On(func() error {
+		server = c.serverPicker.PickServer()
+		dest := server.Destination()
+		dest.Network = network
 		rawConn, err := dialer.Dial(ctx, dest)
 		if err != nil {
 			return err
@@ -73,7 +78,7 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	if err != nil {
 		return errors.New("failed to find an available destination").AtWarning().Base(err)
 	}
-	errors.LogInfo(ctx, "tunneling request to ", destination, " via ", network, ":", server.Destination.NetAddr())
+	errors.LogInfo(ctx, "tunneling request to ", destination, " via ", network, ":", server.Destination().NetAddr())
 
 	defer conn.Close()
 
@@ -88,7 +93,7 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 		request.Command = protocol.RequestCommandUDP
 	}
 
-	user := server.User
+	user := server.PickUser()
 	_, ok := user.Account.(*MemoryAccount)
 	if !ok {
 		return errors.New("user account is not valid")

proxy/shadowsocks/config.pb.go

@@ -199,7 +199,7 @@ type ClientConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Server *protocol.ServerEndpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
+	Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
 }
 
 func (x *ClientConfig) Reset() {
@@ -232,7 +232,7 @@ func (*ClientConfig) Descriptor() ([]byte, []int) {
 	return file_proxy_shadowsocks_config_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *ClientConfig) GetServer() *protocol.ServerEndpoint {
+func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
 	if x != nil {
 		return x.Server
 	}
@@ -268,7 +268,7 @@ var file_proxy_shadowsocks_config_proto_rawDesc = []byte{
 	0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x4e,
 	0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x52, 0x07, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x22,
 	0x4c, 0x0a, 0x0c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12,
-	0x3c, 0x0a, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32,
+	0x3c, 0x0a, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 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, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x2a, 0x74, 0x0a,

proxy/shadowsocks/config.proto

@@ -32,5 +32,5 @@ message ServerConfig {
 }
 
 message ClientConfig {
-  xray.common.protocol.ServerEndpoint server = 1;
+  repeated xray.common.protocol.ServerEndpoint server = 1;
 }

proxy/shadowsocks/server.go

@@ -104,12 +104,12 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
 func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dispatcher routing.Dispatcher) error {
 	udpServer := udp.NewDispatcher(dispatcher, func(ctx context.Context, packet *udp_proto.Packet) {
 		request := protocol.RequestHeaderFromContext(ctx)
-		payload := packet.Payload
 		if request == nil {
-			payload.Release()
 			return
 		}
 
+		payload := packet.Payload
+
 		if payload.UDP != nil {
 			request = &protocol.RequestHeader{
 				User:    request.User,
@@ -124,11 +124,10 @@ func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dis
 			errors.LogWarningInner(ctx, err, "failed to encode UDP packet")
 			return
 		}
+		defer data.Release()
 
 		conn.Write(data.Bytes())
-		data.Release()
 	})
-	defer udpServer.RemoveRay()
 
 	inbound := session.InboundFromContext(ctx)
 	var dest *net.Destination

proxy/socks/client.go

@@ -22,23 +22,27 @@ import (
 
 // Client is a Socks5 client.
 type Client struct {
-	server        *protocol.ServerSpec
+	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 }
 
 // NewClient create a new Socks5 client based on the given config.
 func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
-	if config.Server == nil {
+	serverList := protocol.NewServerList()
-		return nil, errors.New(`no target server found`)
+	for _, rec := range config.Server {
+		s, err := protocol.NewServerSpecFromPB(rec)
+		if err != nil {
+			return nil, errors.New("failed to get server spec").Base(err)
+		}
+		serverList.AddServer(s)
 	}
-	server, err := protocol.NewServerSpecFromPB(config.Server)
+	if serverList.Size() == 0 {
-	if err != nil {
+		return nil, errors.New("0 target server")
-		return nil, errors.New("failed to get server spec").Base(err)
 	}
 
 	v := core.MustFromContext(ctx)
 	c := &Client{
-		server:        server,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 	}
 
@@ -58,12 +62,15 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	destination := ob.Target
 
 	// Outbound server.
-	server := c.server
+	var server *protocol.ServerSpec
-	dest := server.Destination
+	// Outbound server's destination.
+	var dest net.Destination
 	// Connection to the outbound server.
 	var conn stat.Connection
 
 	if err := retry.ExponentialBackoff(5, 100).On(func() error {
+		server = c.serverPicker.PickServer()
+		dest = server.Destination()
 		rawConn, err := dialer.Dial(ctx, dest)
 		if err != nil {
 			return err
@@ -94,7 +101,7 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 		request.Command = protocol.RequestCommandUDP
 	}
 
-	user := server.User
+	user := server.PickUser()
 	if user != nil {
 		request.User = user
 		p = c.policyManager.ForLevel(user.Level)

proxy/socks/config.pb.go

@@ -210,7 +210,7 @@ type ClientConfig struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Sever is a list of Socks server addresses.
-	Server *protocol.ServerEndpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
+	Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
 }
 
 func (x *ClientConfig) Reset() {
@@ -243,7 +243,7 @@ func (*ClientConfig) Descriptor() ([]byte, []int) {
 	return file_proxy_socks_config_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *ClientConfig) GetServer() *protocol.ServerEndpoint {
+func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
 	if x != nil {
 		return x.Server
 	}
@@ -286,7 +286,7 @@ var file_proxy_socks_config_proto_rawDesc = []byte{
 	0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65,
 	0x3a, 0x02, 0x38, 0x01, 0x22, 0x4c, 0x0a, 0x0c, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x43, 0x6f,
 	0x6e, 0x66, 0x69, 0x67, 0x12, 0x3c, 0x0a, 0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x18, 0x01,
-	0x20, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d,
+	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, 0x06, 0x73, 0x65, 0x72, 0x76,
 	0x65, 0x72, 0x2a, 0x25, 0x0a, 0x08, 0x41, 0x75, 0x74, 0x68, 0x54, 0x79, 0x70, 0x65, 0x12, 0x0b,

proxy/socks/config.proto

@@ -35,5 +35,5 @@ message ServerConfig {
 // ClientConfig is the protobuf config for Socks client.
 message ClientConfig {
   // Sever is a list of Socks server addresses.
-  xray.common.protocol.ServerEndpoint server = 1;
+  repeated xray.common.protocol.ServerEndpoint server = 1;
 }

proxy/socks/server.go

@@ -14,12 +14,12 @@ import (
 	"github.com/xtls/xray-core/common/protocol"
 	udp_proto "github.com/xtls/xray-core/common/protocol/udp"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/signal"
+	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
-	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/http"
-	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/udp"
 )
@@ -75,9 +75,6 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
 	inbound.User = &protocol.MemoryUser{
 		Level: s.config.UserLevel,
 	}
-	if !proxy.IsRAWTransportWithoutSecurity(conn) {
-		inbound.CanSpliceCopy = 3
-	}
 
 	switch network {
 	case net.Network_TCP:
@@ -157,16 +154,8 @@ func (s *Server) processTCP(ctx context.Context, conn stat.Connection, dispatche
 				Reason: "",
 			})
 		}
-		if inbound.CanSpliceCopy == 2 {
+
-			inbound.CanSpliceCopy = 1
+		return s.transport(ctx, reader, conn, dest, dispatcher, inbound)
-		}
-		if err := dispatcher.DispatchLink(ctx, dest, &transport.Link{
-			Reader: reader,
-			Writer: buf.NewWriter(conn)},
-		); err != nil {
-			return errors.New("failed to dispatch request").Base(err)
-		}
-		return nil
 	}
 
 	if request.Command == protocol.RequestCommandUDP {
@@ -185,6 +174,52 @@ func (*Server) handleUDP(c io.Reader) error {
 	return common.Error2(io.Copy(buf.DiscardBytes, c))
 }
 
+func (s *Server) transport(ctx context.Context, reader io.Reader, writer io.Writer, dest net.Destination, dispatcher routing.Dispatcher, inbound *session.Inbound) error {
+	ctx, cancel := context.WithCancel(ctx)
+	timer := signal.CancelAfterInactivity(ctx, cancel, s.policy().Timeouts.ConnectionIdle)
+
+	if inbound != nil {
+		inbound.Timer = timer
+	}
+
+	plcy := s.policy()
+	ctx = policy.ContextWithBufferPolicy(ctx, plcy.Buffer)
+	link, err := dispatcher.Dispatch(ctx, dest)
+	if err != nil {
+		return err
+	}
+
+	requestDone := func() error {
+		defer timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
+		if err := buf.Copy(buf.NewReader(reader), link.Writer, buf.UpdateActivity(timer)); err != nil {
+			return errors.New("failed to transport all TCP request").Base(err)
+		}
+
+		return nil
+	}
+
+	responseDone := func() error {
+		inbound.CanSpliceCopy = 1
+		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
+
+		v2writer := buf.NewWriter(writer)
+		if err := buf.Copy(link.Reader, v2writer, buf.UpdateActivity(timer)); err != nil {
+			return errors.New("failed to transport all TCP response").Base(err)
+		}
+
+		return nil
+	}
+
+	requestDonePost := task.OnSuccess(requestDone, task.Close(link.Writer))
+	if err := task.Run(ctx, requestDonePost, responseDone); err != nil {
+		common.Interrupt(link.Reader)
+		common.Interrupt(link.Writer)
+		return errors.New("connection ends").Base(err)
+	}
+
+	return nil
+}
+
 func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dispatcher routing.Dispatcher) error {
 	if s.udpFilter != nil && !s.udpFilter.Check(conn.RemoteAddr()) {
 		errors.LogDebug(ctx, "Unauthorized UDP access from ", conn.RemoteAddr().String())
@@ -196,7 +231,6 @@ func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dis
 
 		request := protocol.RequestHeaderFromContext(ctx)
 		if request == nil {
-			payload.Release()
 			return
 		}
 
@@ -211,20 +245,19 @@ func (s *Server) handleUDPPayload(ctx context.Context, conn stat.Connection, dis
 		udpMessage, err := EncodeUDPPacket(request, payload.Bytes())
 		payload.Release()
 
+		defer udpMessage.Release()
 		if err != nil {
 			errors.LogWarningInner(ctx, err, "failed to write UDP response")
-			return
 		}
 
 		conn.Write(udpMessage.Bytes())
-		udpMessage.Release()
 	})
-	defer udpServer.RemoveRay()
 
 	inbound := session.InboundFromContext(ctx)
 	if inbound != nil && inbound.Source.IsValid() {
 		errors.LogInfo(ctx, "client UDP connection from ", inbound.Source)
 	}
+	inbound.CanSpliceCopy = 1
 
 	var dest *net.Destination
 

proxy/trojan/client.go

@@ -22,23 +22,27 @@ import (
 
 // Client is a inbound handler for trojan protocol
 type Client struct {
-	server        *protocol.ServerSpec
+	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 }
 
 // NewClient create a new trojan client.
 func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {
-	if config.Server == nil {
+	serverList := protocol.NewServerList()
-		return nil, errors.New(`no target server found`)
+	for _, rec := range config.Server {
+		s, err := protocol.NewServerSpecFromPB(rec)
+		if err != nil {
+			return nil, errors.New("failed to parse server spec").Base(err)
+		}
+		serverList.AddServer(s)
 	}
-	server, err := protocol.NewServerSpecFromPB(config.Server)
+	if serverList.Size() == 0 {
-	if err != nil {
+		return nil, errors.New("0 server")
-		return nil, errors.New("failed to get server spec").Base(err)
 	}
 
 	v := core.MustFromContext(ctx)
 	client := &Client{
-		server:        server,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 	}
 	return client, nil
@@ -56,11 +60,12 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	destination := ob.Target
 	network := destination.Network
 
-	server := c.server
+	var server *protocol.ServerSpec
 	var conn stat.Connection
 
 	err := retry.ExponentialBackoff(5, 100).On(func() error {
-		rawConn, err := dialer.Dial(ctx, server.Destination)
+		server = c.serverPicker.PickServer()
+		rawConn, err := dialer.Dial(ctx, server.Destination())
 		if err != nil {
 			return err
 		}
@@ -71,11 +76,11 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
 	if err != nil {
 		return errors.New("failed to find an available destination").AtWarning().Base(err)
 	}
-	errors.LogInfo(ctx, "tunneling request to ", destination, " via ", server.Destination.NetAddr())
+	errors.LogInfo(ctx, "tunneling request to ", destination, " via ", server.Destination().NetAddr())
 
 	defer conn.Close()
 
-	user := server.User
+	user := server.PickUser()
 	account, ok := user.Account.(*MemoryAccount)
 	if !ok {
 		return errors.New("user account is not valid")

proxy/trojan/config.pb.go

@@ -156,7 +156,7 @@ type ClientConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Server *protocol.ServerEndpoint `protobuf:"bytes,1,opt,name=server,proto3" json:"server,omitempty"`
+	Server []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=server,proto3" json:"server,omitempty"`
 }
 
 func (x *ClientConfig) Reset() {
@@ -189,7 +189,7 @@ func (*ClientConfig) Descriptor() ([]byte, []int) {
 	return file_proxy_trojan_config_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *ClientConfig) GetServer() *protocol.ServerEndpoint {
+func (x *ClientConfig) GetServer() []*protocol.ServerEndpoint {
 	if x != nil {
 		return x.Server
 	}
@@ -271,7 +271,7 @@ var file_proxy_trojan_config_proto_rawDesc = []byte{
 	0x04, 0x64, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x78, 0x76, 0x65, 0x72, 0x18, 0x06, 0x20,
 	0x01, 0x28, 0x04, 0x52, 0x04, 0x78, 0x76, 0x65, 0x72, 0x22, 0x4c, 0x0a, 0x0c, 0x43, 0x6c, 0x69,
 	0x65, 0x6e, 0x74, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3c, 0x0a, 0x06, 0x73, 0x65, 0x72,
-	0x76, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61, 0x79,
+	0x76, 0x65, 0x72, 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,
 	0x06, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x22, 0x7b, 0x0a, 0x0c, 0x53, 0x65, 0x72, 0x76, 0x65,

proxy/trojan/config.proto

@@ -23,7 +23,7 @@ message Fallback {
 }
 
 message ClientConfig {
-  xray.common.protocol.ServerEndpoint server = 1;
+  repeated xray.common.protocol.ServerEndpoint server = 1;
 }
 
 message ServerConfig {

proxy/trojan/protocol.go

@@ -113,11 +113,9 @@ func (w *PacketWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
 			target = b.UDP
 		}
 		if _, err := w.writePacket(b.Bytes(), *target); err != nil {
-			b.Release()
 			buf.ReleaseMulti(mb)
 			return err
 		}
-		b.Release()
 	}
 	return nil
 }

proxy/trojan/server.go

@@ -233,7 +233,7 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
 	sessionPolicy = s.policyManager.ForLevel(user.Level)
 
 	if destination.Network == net.Network_UDP { // handle udp request
-		return s.handleUDPPayload(ctx, sessionPolicy, &PacketReader{Reader: clientReader}, &PacketWriter{Writer: conn}, dispatcher)
+		return s.handleUDPPayload(ctx, &PacketReader{Reader: clientReader}, &PacketWriter{Writer: conn}, dispatcher)
 	}
 
 	ctx = log.ContextWithAccessMessage(ctx, &log.AccessMessage{
@@ -248,11 +248,7 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
 	return s.handleConnection(ctx, sessionPolicy, destination, clientReader, buf.NewWriter(conn), dispatcher)
 }
 
-func (s *Server) handleUDPPayload(ctx context.Context, sessionPolicy policy.Session, clientReader *PacketReader, clientWriter *PacketWriter, dispatcher routing.Dispatcher) error {
+func (s *Server) handleUDPPayload(ctx context.Context, clientReader *PacketReader, clientWriter *PacketWriter, dispatcher routing.Dispatcher) error {
-	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
-	timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
-	defer timer.SetTimeout(0)
 	udpServer := udp.NewDispatcher(dispatcher, func(ctx context.Context, packet *udp_proto.Packet) {
 		udpPayload := packet.Payload
 		if udpPayload.UDP == nil {
@@ -261,68 +257,55 @@ func (s *Server) handleUDPPayload(ctx context.Context, sessionPolicy policy.Sess
 
 		if err := clientWriter.WriteMultiBuffer(buf.MultiBuffer{udpPayload}); err != nil {
 			errors.LogWarningInner(ctx, err, "failed to write response")
-			cancel()
-		} else {
-			timer.Update()
 		}
 	})
-	defer udpServer.RemoveRay()
 
 	inbound := session.InboundFromContext(ctx)
 	user := inbound.User
 
 	var dest *net.Destination
 
-	requestDone := func() error {
+	for {
-		for {
+		select {
-			select {
+		case <-ctx.Done():
-			case <-ctx.Done():
+			return nil
+		default:
+			mb, err := clientReader.ReadMultiBuffer()
+			if err != nil {
+				if errors.Cause(err) != io.EOF {
+					return errors.New("unexpected EOF").Base(err)
+				}
 				return nil
-			default:
+			}
-				mb, err := clientReader.ReadMultiBuffer()
-				if err != nil {
-					if errors.Cause(err) != io.EOF {
-						return errors.New("unexpected EOF").Base(err)
-					}
-					return nil
-				}
 
-				mb2, b := buf.SplitFirst(mb)
+			mb2, b := buf.SplitFirst(mb)
-				if b == nil {
+			if b == nil {
-					continue
+				continue
-				}
+			}
-				timer.Update()
+			destination := *b.UDP
-				destination := *b.UDP
 
-				currentPacketCtx := ctx
+			currentPacketCtx := ctx
-				if inbound.Source.IsValid() {
+			if inbound.Source.IsValid() {
-					currentPacketCtx = log.ContextWithAccessMessage(ctx, &log.AccessMessage{
+				currentPacketCtx = log.ContextWithAccessMessage(ctx, &log.AccessMessage{
-						From:   inbound.Source,
+					From:   inbound.Source,
-						To:     destination,
+					To:     destination,
-						Status: log.AccessAccepted,
+					Status: log.AccessAccepted,
-						Reason: "",
+					Reason: "",
-						Email:  user.Email,
+					Email:  user.Email,
-					})
+				})
-				}
+			}
-				errors.LogInfo(ctx, "tunnelling request to ", destination)
+			errors.LogInfo(ctx, "tunnelling request to ", destination)
 
-				if !s.cone || dest == nil {
+			if !s.cone || dest == nil {
-					dest = &destination
+				dest = &destination
-				}
+			}
 
-				udpServer.Dispatch(currentPacketCtx, *dest, b) // first packet
+			udpServer.Dispatch(currentPacketCtx, *dest, b) // first packet
-				for _, payload := range mb2 {
+			for _, payload := range mb2 {
-					udpServer.Dispatch(currentPacketCtx, *dest, payload)
+				udpServer.Dispatch(currentPacketCtx, *dest, payload)
-				}
 			}
 		}
-
 	}
-
-	if err := task.Run(ctx, requestDone); err != nil {
-		return err
-	}
-	return nil
 }
 
 func (s *Server) handleConnection(ctx context.Context, sessionPolicy policy.Session,

proxy/vless/account.go

@@ -18,10 +18,6 @@ func (a *Account) AsAccount() (protocol.Account, error) {
 		ID:         protocol.NewID(id),
 		Flow:       a.Flow,       // needs parser here?
 		Encryption: a.Encryption, // needs parser here?
-		XorMode:    a.XorMode,
-		Seconds:    a.Seconds,
-		Padding:    a.Padding,
-		Reverse:    a.Reverse,
 	}, nil
 }
 
@@ -31,13 +27,8 @@ type MemoryAccount struct {
 	ID *protocol.ID
 	// Flow of the account. May be "xtls-rprx-vision".
 	Flow string
-
+	// Encryption of the account. Used for client connections, and only accepts "none" for now.
 	Encryption string
-	XorMode    uint32
-	Seconds    uint32
-	Padding    string
-
-	Reverse *Reverse
 }
 
 // Equals implements protocol.Account.Equals().
@@ -54,9 +45,5 @@ func (a *MemoryAccount) ToProto() proto.Message {
 		Id:         a.ID.String(),
 		Flow:       a.Flow,
 		Encryption: a.Encryption,
-		XorMode:    a.XorMode,
-		Seconds:    a.Seconds,
-		Padding:    a.Padding,
-		Reverse:    a.Reverse,
 	}
 }

proxy/vless/account.pb.go

@@ -20,51 +20,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type Reverse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
-}
-
-func (x *Reverse) Reset() {
-	*x = Reverse{}
-	mi := &file_proxy_vless_account_proto_msgTypes[0]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *Reverse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Reverse) ProtoMessage() {}
-
-func (x *Reverse) ProtoReflect() protoreflect.Message {
-	mi := &file_proxy_vless_account_proto_msgTypes[0]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Reverse.ProtoReflect.Descriptor instead.
-func (*Reverse) Descriptor() ([]byte, []int) {
-	return file_proxy_vless_account_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Reverse) GetTag() string {
-	if x != nil {
-		return x.Tag
-	}
-	return ""
-}
-
 type Account struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -73,17 +28,14 @@ type Account struct {
 	// ID of the account, in the form of a UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
 	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
 	// Flow settings. May be "xtls-rprx-vision".
-	Flow       string   `protobuf:"bytes,2,opt,name=flow,proto3" json:"flow,omitempty"`
+	Flow string `protobuf:"bytes,2,opt,name=flow,proto3" json:"flow,omitempty"`
-	Encryption string   `protobuf:"bytes,3,opt,name=encryption,proto3" json:"encryption,omitempty"`
+	// Encryption settings. Only applies to client side, and only accepts "none" for now.
-	XorMode    uint32   `protobuf:"varint,4,opt,name=xorMode,proto3" json:"xorMode,omitempty"`
+	Encryption string `protobuf:"bytes,3,opt,name=encryption,proto3" json:"encryption,omitempty"`
-	Seconds    uint32   `protobuf:"varint,5,opt,name=seconds,proto3" json:"seconds,omitempty"`
-	Padding    string   `protobuf:"bytes,6,opt,name=padding,proto3" json:"padding,omitempty"`
-	Reverse    *Reverse `protobuf:"bytes,7,opt,name=reverse,proto3" json:"reverse,omitempty"`
 }
 
 func (x *Account) Reset() {
 	*x = Account{}
-	mi := &file_proxy_vless_account_proto_msgTypes[1]
+	mi := &file_proxy_vless_account_proto_msgTypes[0]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -95,7 +47,7 @@ func (x *Account) String() string {
 func (*Account) ProtoMessage() {}
 
 func (x *Account) ProtoReflect() protoreflect.Message {
-	mi := &file_proxy_vless_account_proto_msgTypes[1]
+	mi := &file_proxy_vless_account_proto_msgTypes[0]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -108,7 +60,7 @@ func (x *Account) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Account.ProtoReflect.Descriptor instead.
 func (*Account) Descriptor() ([]byte, []int) {
-	return file_proxy_vless_account_proto_rawDescGZIP(), []int{1}
+	return file_proxy_vless_account_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *Account) GetId() string {
@@ -132,61 +84,23 @@ func (x *Account) GetEncryption() string {
 	return ""
 }
 
-func (x *Account) GetXorMode() uint32 {
-	if x != nil {
-		return x.XorMode
-	}
-	return 0
-}
-
-func (x *Account) GetSeconds() uint32 {
-	if x != nil {
-		return x.Seconds
-	}
-	return 0
-}
-
-func (x *Account) GetPadding() string {
-	if x != nil {
-		return x.Padding
-	}
-	return ""
-}
-
-func (x *Account) GetReverse() *Reverse {
-	if x != nil {
-		return x.Reverse
-	}
-	return nil
-}
-
 var File_proxy_vless_account_proto protoreflect.FileDescriptor
 
 var file_proxy_vless_account_proto_rawDesc = []byte{
 	0x0a, 0x19, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x61, 0x63,
 	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x10, 0x78, 0x72, 0x61,
-	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x22, 0x1b, 0x0a,
+	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x22, 0x4d, 0x0a,
-	0x07, 0x52, 0x65, 0x76, 0x65, 0x72, 0x73, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18,
+	0x07, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01,
-	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x22, 0xd0, 0x01, 0x0a, 0x07, 0x41,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x66, 0x6c, 0x6f, 0x77,
-	0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x12, 0x1e, 0x0a, 0x0a,
-	0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x18, 0x02,
+	0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09,
-	0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x66, 0x6c, 0x6f, 0x77, 0x12, 0x1e, 0x0a, 0x0a, 0x65, 0x6e,
+	0x52, 0x0a, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x42, 0x52, 0x0a, 0x14,
-	0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a,
+	0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76,
-	0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x18, 0x0a, 0x07, 0x78, 0x6f,
+	0x6c, 0x65, 0x73, 0x73, 0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
-	0x72, 0x4d, 0x6f, 0x64, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x78, 0x6f, 0x72,
+	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
-	0x4d, 0x6f, 0x64, 0x65, 0x12, 0x18, 0x0a, 0x07, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x73, 0x18,
+	0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0xaa, 0x02, 0x10,
-	0x05, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x07, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x73, 0x12, 0x18,
+	0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73, 0x73,
-	0x0a, 0x07, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-	0x07, 0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x12, 0x33, 0x0a, 0x07, 0x72, 0x65, 0x76, 0x65,
-	0x72, 0x73, 0x65, 0x18, 0x07, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x52, 0x65, 0x76,
-	0x65, 0x72, 0x73, 0x65, 0x52, 0x07, 0x72, 0x65, 0x76, 0x65, 0x72, 0x73, 0x65, 0x42, 0x52, 0x0a,
-	0x14, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e,
-	0x76, 0x6c, 0x65, 0x73, 0x73, 0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e,
-	0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f,
-	0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0xaa, 0x02,
-	0x10, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73,
-	0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -201,18 +115,16 @@ func file_proxy_vless_account_proto_rawDescGZIP() []byte {
 	return file_proxy_vless_account_proto_rawDescData
 }
 
-var file_proxy_vless_account_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_proxy_vless_account_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
 var file_proxy_vless_account_proto_goTypes = []any{
-	(*Reverse)(nil), // 0: xray.proxy.vless.Reverse
+	(*Account)(nil), // 0: xray.proxy.vless.Account
-	(*Account)(nil), // 1: xray.proxy.vless.Account
 }
 var file_proxy_vless_account_proto_depIdxs = []int32{
-	0, // 0: xray.proxy.vless.Account.reverse:type_name -> xray.proxy.vless.Reverse
+	0, // [0:0] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
-	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
-	0, // [0:1] is the sub-list for field type_name
 }
 
 func init() { file_proxy_vless_account_proto_init() }
@@ -226,7 +138,7 @@ func file_proxy_vless_account_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proxy_vless_account_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   2,
+			NumMessages:   1,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

proxy/vless/account.proto

@@ -6,20 +6,11 @@ option go_package = "github.com/xtls/xray-core/proxy/vless";
 option java_package = "com.xray.proxy.vless";
 option java_multiple_files = true;
 
-message Reverse {
-  string tag = 1;
-}
-
 message Account {
   // ID of the account, in the form of a UUID, e.g., "66ad4540-b58c-4ad2-9926-ea63445a9b57".
   string id = 1;
   // Flow settings. May be "xtls-rprx-vision".
   string flow = 2;
-
+  // Encryption settings. Only applies to client side, and only accepts "none" for now.
   string encryption = 3;
-  uint32 xorMode = 4;
-  uint32 seconds = 5;
-  string padding = 6;
-
-  Reverse reverse = 7;
 }

proxy/vless/encoding/addons.go

@@ -3,12 +3,10 @@ package encoding
 import (
 	"context"
 	"io"
-	"net"
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/protocol"
-	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 	"google.golang.org/protobuf/proto"
@@ -63,14 +61,15 @@ func DecodeHeaderAddons(buffer *buf.Buffer, reader io.Reader) (*Addons, error) {
 }
 
 // EncodeBodyAddons returns a Writer that auto-encrypt content written by caller.
-func EncodeBodyAddons(writer buf.Writer, request *protocol.RequestHeader, requestAddons *Addons, state *proxy.TrafficState, isUplink bool, context context.Context, conn net.Conn, ob *session.Outbound) buf.Writer {
+func EncodeBodyAddons(writer io.Writer, request *protocol.RequestHeader, requestAddons *Addons, state *proxy.TrafficState, isUplink bool, context context.Context) buf.Writer {
 	if request.Command == protocol.RequestCommandUDP {
-		return NewMultiLengthPacketWriter(writer)
+		return NewMultiLengthPacketWriter(writer.(buf.Writer))
 	}
+	w := buf.NewWriter(writer)
 	if requestAddons.Flow == vless.XRV {
-		return proxy.NewVisionWriter(writer, state, isUplink, context, conn, ob)
+		w = proxy.NewVisionWriter(w, state, isUplink, context)
 	}
-	return writer
+	return w
 }
 
 // DecodeBodyAddons returns a Reader from which caller can fetch decrypted body.

proxy/vless/encoding/encoding.go

@@ -1,6 +1,7 @@
 package encoding
 
 import (
+	"bytes"
 	"context"
 	"io"
 
@@ -10,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal"
+	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 )
@@ -46,7 +48,7 @@ func EncodeRequestHeader(writer io.Writer, request *protocol.RequestHeader, requ
 		return errors.New("failed to write request command").Base(err)
 	}
 
-	if request.Command != protocol.RequestCommandMux && request.Command != protocol.RequestCommandRvs {
+	if request.Command != protocol.RequestCommandMux {
 		if err := addrParser.WriteAddressPort(&buffer, request.Address, request.Port); err != nil {
 			return errors.New("failed to write request address and port").Base(err)
 		}
@@ -112,8 +114,7 @@ func DecodeRequestHeader(isfb bool, first *buf.Buffer, reader io.Reader, validat
 		switch request.Command {
 		case protocol.RequestCommandMux:
 			request.Address = net.DomainAddress("v1.mux.cool")
-		case protocol.RequestCommandRvs:
+			request.Port = 0
-			request.Address = net.DomainAddress("v1.rvs.cool")
 		case protocol.RequestCommandTCP, protocol.RequestCommandUDP:
 			if addr, port, err := addrParser.ReadAddressPort(&buffer, reader); err == nil {
 				request.Address = addr
@@ -170,8 +171,8 @@ func DecodeResponseHeader(reader io.Reader, request *protocol.RequestHeader) (*A
 	return responseAddons, nil
 }
 
-// XtlsRead can switch to splice copy
+// XtlsRead filter and read xtls protocol
-func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer, conn net.Conn, trafficState *proxy.TrafficState, isUplink bool, ctx context.Context) error {
+func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer, conn net.Conn, input *bytes.Reader, rawInput *bytes.Buffer, trafficState *proxy.TrafficState, ob *session.Outbound, isUplink bool, ctx context.Context) error {
 	err := func() error {
 		for {
 			if isUplink && trafficState.Inbound.UplinkReaderDirectCopy || !isUplink && trafficState.Outbound.DownlinkReaderDirectCopy {
@@ -180,11 +181,74 @@ func XtlsRead(reader buf.Reader, writer buf.Writer, timer *signal.ActivityTimer,
 				if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil {
 					writerConn = inbound.Conn
 					inTimer = inbound.Timer
+					if isUplink && inbound.CanSpliceCopy == 2 {
+						inbound.CanSpliceCopy = 1
+					}
+					if !isUplink && ob != nil && ob.CanSpliceCopy == 2 { // ob need to be passed in due to context can change
+						ob.CanSpliceCopy = 1
+					}
 				}
 				return proxy.CopyRawConnIfExist(ctx, conn, writerConn, writer, timer, inTimer)
 			}
 			buffer, err := reader.ReadMultiBuffer()
 			if !buffer.IsEmpty() {
+				timer.Update()
+				if isUplink && trafficState.Inbound.UplinkReaderDirectCopy || !isUplink && trafficState.Outbound.DownlinkReaderDirectCopy {
+					// XTLS Vision processes struct TLS Conn's input and rawInput
+					if inputBuffer, err := buf.ReadFrom(input); err == nil {
+						if !inputBuffer.IsEmpty() {
+							buffer, _ = buf.MergeMulti(buffer, inputBuffer)
+						}
+					}
+					if rawInputBuffer, err := buf.ReadFrom(rawInput); err == nil {
+						if !rawInputBuffer.IsEmpty() {
+							buffer, _ = buf.MergeMulti(buffer, rawInputBuffer)
+						}
+					}
+				}
+				if werr := writer.WriteMultiBuffer(buffer); werr != nil {
+					return werr
+				}
+			}
+			if err != nil {
+				return err
+			}
+		}
+	}()
+	if err != nil && errors.Cause(err) != io.EOF {
+		return err
+	}
+	return nil
+}
+
+// XtlsWrite filter and write xtls protocol
+func XtlsWrite(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, conn net.Conn, trafficState *proxy.TrafficState, ob *session.Outbound, isUplink bool, ctx context.Context) error {
+	err := func() error {
+		var ct stats.Counter
+		for {
+			buffer, err := reader.ReadMultiBuffer()
+			if isUplink && trafficState.Outbound.UplinkWriterDirectCopy || !isUplink && trafficState.Inbound.DownlinkWriterDirectCopy {
+				if inbound := session.InboundFromContext(ctx); inbound != nil {
+					if !isUplink && inbound.CanSpliceCopy == 2 {
+						inbound.CanSpliceCopy = 1
+					}
+					if isUplink && ob != nil && ob.CanSpliceCopy == 2 {
+						ob.CanSpliceCopy = 1
+					}
+				}
+				rawConn, _, writerCounter := proxy.UnwrapRawConn(conn)
+				writer = buf.NewWriter(rawConn)
+				ct = writerCounter
+				if isUplink {
+					trafficState.Outbound.UplinkWriterDirectCopy = false
+				} else {
+					trafficState.Inbound.DownlinkWriterDirectCopy = false
+				}
+			}
+			if !buffer.IsEmpty() {
+				if ct != nil {
+					ct.Add(int64(buffer.Len()))
+				}
 				timer.Update()
 				if werr := writer.WriteMultiBuffer(buffer); werr != nil {
 					return werr

proxy/vless/encryption/client.go

@@ -1,210 +0,0 @@
-package encryption
-
-import (
-	"crypto/cipher"
-	"crypto/ecdh"
-	"crypto/mlkem"
-	"crypto/rand"
-	"io"
-	"net"
-	"sync"
-	"time"
-
-	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/protocol"
-	"lukechampine.com/blake3"
-)
-
-type ClientInstance struct {
-	NfsPKeys      []any
-	NfsPKeysBytes [][]byte
-	Hash32s       [][32]byte
-	RelaysLength  int
-	XorMode       uint32
-	Seconds       uint32
-	PaddingLens   [][3]int
-	PaddingGaps   [][3]int
-
-	RWLock sync.RWMutex
-	Expire time.Time
-	PfsKey []byte
-	Ticket []byte
-}
-
-func (i *ClientInstance) Init(nfsPKeysBytes [][]byte, xorMode, seconds uint32, padding string) (err error) {
-	if i.NfsPKeys != nil {
-		return errors.New("already initialized")
-	}
-	l := len(nfsPKeysBytes)
-	if l == 0 {
-		return errors.New("empty nfsPKeysBytes")
-	}
-	i.NfsPKeys = make([]any, l)
-	i.NfsPKeysBytes = nfsPKeysBytes
-	i.Hash32s = make([][32]byte, l)
-	for j, k := range nfsPKeysBytes {
-		if len(k) == 32 {
-			if i.NfsPKeys[j], err = ecdh.X25519().NewPublicKey(k); err != nil {
-				return
-			}
-			i.RelaysLength += 32 + 32
-		} else {
-			if i.NfsPKeys[j], err = mlkem.NewEncapsulationKey768(k); err != nil {
-				return
-			}
-			i.RelaysLength += 1088 + 32
-		}
-		i.Hash32s[j] = blake3.Sum256(k)
-	}
-	i.RelaysLength -= 32
-	i.XorMode = xorMode
-	i.Seconds = seconds
-	return ParsePadding(padding, &i.PaddingLens, &i.PaddingGaps)
-}
-
-func (i *ClientInstance) Handshake(conn net.Conn) (*CommonConn, error) {
-	if i.NfsPKeys == nil {
-		return nil, errors.New("uninitialized")
-	}
-	c := NewCommonConn(conn, protocol.HasAESGCMHardwareSupport)
-
-	ivAndRealysLength := 16 + i.RelaysLength
-	pfsKeyExchangeLength := 18 + 1184 + 32 + 16
-	paddingLength, paddingLens, paddingGaps := CreatPadding(i.PaddingLens, i.PaddingGaps)
-	clientHello := make([]byte, ivAndRealysLength+pfsKeyExchangeLength+paddingLength)
-
-	iv := clientHello[:16]
-	rand.Read(iv)
-	relays := clientHello[16:ivAndRealysLength]
-	var nfsKey []byte
-	var lastCTR cipher.Stream
-	for j, k := range i.NfsPKeys {
-		var index = 32
-		if k, ok := k.(*ecdh.PublicKey); ok {
-			privateKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
-			copy(relays, privateKey.PublicKey().Bytes())
-			var err error
-			nfsKey, err = privateKey.ECDH(k)
-			if err != nil {
-				return nil, err
-			}
-		}
-		if k, ok := k.(*mlkem.EncapsulationKey768); ok {
-			var ciphertext []byte
-			nfsKey, ciphertext = k.Encapsulate()
-			copy(relays, ciphertext)
-			index = 1088
-		}
-		if i.XorMode > 0 { // this xor can (others can't) be recovered by client's config, revealing an X25519 public key / ML-KEM-768 ciphertext, that's why "native" values
-			NewCTR(i.NfsPKeysBytes[j], iv).XORKeyStream(relays, relays[:index]) // make X25519 public key / ML-KEM-768 ciphertext distinguishable from random bytes
-		}
-		if lastCTR != nil {
-			lastCTR.XORKeyStream(relays, relays[:32]) // make this relay irreplaceable
-		}
-		if j == len(i.NfsPKeys)-1 {
-			break
-		}
-		lastCTR = NewCTR(nfsKey, iv)
-		lastCTR.XORKeyStream(relays[index:], i.Hash32s[j+1][:])
-		relays = relays[index+32:]
-	}
-	nfsAEAD := NewAEAD(iv, nfsKey, c.UseAES)
-
-	if i.Seconds > 0 {
-		i.RWLock.RLock()
-		if time.Now().Before(i.Expire) {
-			c.Client = i
-			c.UnitedKey = append(i.PfsKey, nfsKey...) // different unitedKey for each connection
-			nfsAEAD.Seal(clientHello[:ivAndRealysLength], nil, EncodeLength(32), nil)
-			nfsAEAD.Seal(clientHello[:ivAndRealysLength+18], nil, i.Ticket, nil)
-			i.RWLock.RUnlock()
-			c.PreWrite = clientHello[:ivAndRealysLength+18+32]
-			c.AEAD = NewAEAD(clientHello[ivAndRealysLength+18:ivAndRealysLength+18+32], c.UnitedKey, c.UseAES)
-			if i.XorMode == 2 {
-				c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, iv), nil, len(c.PreWrite), 16)
-			}
-			return c, nil
-		}
-		i.RWLock.RUnlock()
-	}
-
-	pfsKeyExchange := clientHello[ivAndRealysLength : ivAndRealysLength+pfsKeyExchangeLength]
-	nfsAEAD.Seal(pfsKeyExchange[:0], nil, EncodeLength(pfsKeyExchangeLength-18), nil)
-	mlkem768DKey, _ := mlkem.GenerateKey768()
-	x25519SKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
-	pfsPublicKey := append(mlkem768DKey.EncapsulationKey().Bytes(), x25519SKey.PublicKey().Bytes()...)
-	nfsAEAD.Seal(pfsKeyExchange[:18], nil, pfsPublicKey, nil)
-
-	padding := clientHello[ivAndRealysLength+pfsKeyExchangeLength:]
-	nfsAEAD.Seal(padding[:0], nil, EncodeLength(paddingLength-18), nil)
-	nfsAEAD.Seal(padding[:18], nil, padding[18:paddingLength-16], nil)
-
-	paddingLens[0] = ivAndRealysLength + pfsKeyExchangeLength + paddingLens[0]
-	for i, l := range paddingLens { // sends padding in a fragmented way, to create variable traffic pattern, before inner VLESS flow takes control
-		if l > 0 {
-			if _, err := conn.Write(clientHello[:l]); err != nil {
-				return nil, err
-			}
-			clientHello = clientHello[l:]
-		}
-		if len(paddingGaps) > i {
-			time.Sleep(paddingGaps[i])
-		}
-	}
-
-	encryptedPfsPublicKey := make([]byte, 1088+32+16)
-	if _, err := io.ReadFull(conn, encryptedPfsPublicKey); err != nil {
-		return nil, err
-	}
-	nfsAEAD.Open(encryptedPfsPublicKey[:0], MaxNonce, encryptedPfsPublicKey, nil)
-	mlkem768Key, err := mlkem768DKey.Decapsulate(encryptedPfsPublicKey[:1088])
-	if err != nil {
-		return nil, err
-	}
-	peerX25519PKey, err := ecdh.X25519().NewPublicKey(encryptedPfsPublicKey[1088 : 1088+32])
-	if err != nil {
-		return nil, err
-	}
-	x25519Key, err := x25519SKey.ECDH(peerX25519PKey)
-	if err != nil {
-		return nil, err
-	}
-	pfsKey := make([]byte, 32+32) // no more capacity
-	copy(pfsKey, mlkem768Key)
-	copy(pfsKey[32:], x25519Key)
-	c.UnitedKey = append(pfsKey, nfsKey...)
-	c.AEAD = NewAEAD(pfsPublicKey, c.UnitedKey, c.UseAES)
-	c.PeerAEAD = NewAEAD(encryptedPfsPublicKey[:1088+32], c.UnitedKey, c.UseAES)
-
-	encryptedTicket := make([]byte, 32)
-	if _, err := io.ReadFull(conn, encryptedTicket); err != nil {
-		return nil, err
-	}
-	if _, err := c.PeerAEAD.Open(encryptedTicket[:0], nil, encryptedTicket, nil); err != nil {
-		return nil, err
-	}
-	seconds := DecodeLength(encryptedTicket)
-
-	if i.Seconds > 0 && seconds > 0 {
-		i.RWLock.Lock()
-		i.Expire = time.Now().Add(time.Duration(seconds) * time.Second)
-		i.PfsKey = pfsKey
-		i.Ticket = encryptedTicket[:16]
-		i.RWLock.Unlock()
-	}
-
-	encryptedLength := make([]byte, 18)
-	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
-		return nil, err
-	}
-	if _, err := c.PeerAEAD.Open(encryptedLength[:0], nil, encryptedLength, nil); err != nil {
-		return nil, err
-	}
-	length := DecodeLength(encryptedLength[:2])
-	c.PeerPadding = make([]byte, length) // important: allows server sends padding slowly, eliminating 1-RTT's traffic pattern
-
-	if i.XorMode == 2 {
-		c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, iv), NewCTR(c.UnitedKey, encryptedTicket[:16]), 0, length)
-	}
-	return c, nil
-}

proxy/vless/encryption/common.go

@@ -1,280 +0,0 @@
-package encryption
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"fmt"
-	"io"
-	"net"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/xtls/xray-core/common/crypto"
-	"github.com/xtls/xray-core/common/errors"
-	"golang.org/x/crypto/chacha20poly1305"
-	"lukechampine.com/blake3"
-)
-
-var OutBytesPool = sync.Pool{
-	New: func() any {
-		return make([]byte, 5+8192+16)
-	},
-}
-
-type CommonConn struct {
-	net.Conn
-	UseAES      bool
-	Client      *ClientInstance
-	UnitedKey   []byte
-	PreWrite    []byte
-	AEAD        *AEAD
-	PeerAEAD    *AEAD
-	PeerPadding []byte
-	rawInput    bytes.Buffer
-	input       bytes.Reader
-}
-
-func NewCommonConn(conn net.Conn, useAES bool) *CommonConn {
-	return &CommonConn{
-		Conn:   conn,
-		UseAES: useAES,
-	}
-}
-
-func (c *CommonConn) Write(b []byte) (int, error) {
-	if len(b) == 0 {
-		return 0, nil
-	}
-	outBytes := OutBytesPool.Get().([]byte)
-	defer OutBytesPool.Put(outBytes)
-	for n := 0; n < len(b); {
-		b := b[n:]
-		if len(b) > 8192 {
-			b = b[:8192] // for avoiding another copy() in peer's Read()
-		}
-		n += len(b)
-		headerAndData := outBytes[:5+len(b)+16]
-		EncodeHeader(headerAndData, len(b)+16)
-		max := false
-		if bytes.Equal(c.AEAD.Nonce[:], MaxNonce) {
-			max = true
-		}
-		c.AEAD.Seal(headerAndData[:5], nil, b, headerAndData[:5])
-		if max {
-			c.AEAD = NewAEAD(headerAndData, c.UnitedKey, c.UseAES)
-		}
-		if c.PreWrite != nil {
-			headerAndData = append(c.PreWrite, headerAndData...)
-			c.PreWrite = nil
-		}
-		if _, err := c.Conn.Write(headerAndData); err != nil {
-			return 0, err
-		}
-	}
-	return len(b), nil
-}
-
-func (c *CommonConn) Read(b []byte) (int, error) {
-	if len(b) == 0 {
-		return 0, nil
-	}
-	if c.PeerAEAD == nil { // client's 0-RTT
-		serverRandom := make([]byte, 16)
-		if _, err := io.ReadFull(c.Conn, serverRandom); err != nil {
-			return 0, err
-		}
-		c.PeerAEAD = NewAEAD(serverRandom, c.UnitedKey, c.UseAES)
-		if xorConn, ok := c.Conn.(*XorConn); ok {
-			xorConn.PeerCTR = NewCTR(c.UnitedKey, serverRandom)
-		}
-	}
-	if c.PeerPadding != nil { // client's 1-RTT
-		if _, err := io.ReadFull(c.Conn, c.PeerPadding); err != nil {
-			return 0, err
-		}
-		if _, err := c.PeerAEAD.Open(c.PeerPadding[:0], nil, c.PeerPadding, nil); err != nil {
-			return 0, err
-		}
-		c.PeerPadding = nil
-	}
-	if c.input.Len() > 0 {
-		return c.input.Read(b)
-	}
-	peerHeader := [5]byte{}
-	if _, err := io.ReadFull(c.Conn, peerHeader[:]); err != nil {
-		return 0, err
-	}
-	l, err := DecodeHeader(peerHeader[:]) // l: 17~17000
-	if err != nil {
-		if c.Client != nil && strings.Contains(err.Error(), "invalid header: ") { // client's 0-RTT
-			c.Client.RWLock.Lock()
-			if bytes.HasPrefix(c.UnitedKey, c.Client.PfsKey) {
-				c.Client.Expire = time.Now() // expired
-			}
-			c.Client.RWLock.Unlock()
-			return 0, errors.New("new handshake needed")
-		}
-		return 0, err
-	}
-	c.Client = nil
-	if c.rawInput.Cap() < l {
-		c.rawInput.Grow(l) // no need to use sync.Pool, because we are always reading
-	}
-	peerData := c.rawInput.Bytes()[:l]
-	if _, err := io.ReadFull(c.Conn, peerData); err != nil {
-		return 0, err
-	}
-	dst := peerData[:l-16]
-	if len(dst) <= len(b) {
-		dst = b[:len(dst)] // avoids another copy()
-	}
-	var newAEAD *AEAD
-	if bytes.Equal(c.PeerAEAD.Nonce[:], MaxNonce) {
-		newAEAD = NewAEAD(append(peerHeader[:], peerData...), c.UnitedKey, c.UseAES)
-	}
-	_, err = c.PeerAEAD.Open(dst[:0], nil, peerData, peerHeader[:])
-	if newAEAD != nil {
-		c.PeerAEAD = newAEAD
-	}
-	if err != nil {
-		return 0, err
-	}
-	if len(dst) > len(b) {
-		c.input.Reset(dst[copy(b, dst):])
-		dst = b // for len(dst)
-	}
-	return len(dst), nil
-}
-
-type AEAD struct {
-	cipher.AEAD
-	Nonce [12]byte
-}
-
-func NewAEAD(ctx, key []byte, useAES bool) *AEAD {
-	k := make([]byte, 32)
-	blake3.DeriveKey(k, string(ctx), key)
-	var aead cipher.AEAD
-	if useAES {
-		block, _ := aes.NewCipher(k)
-		aead, _ = cipher.NewGCM(block)
-	} else {
-		aead, _ = chacha20poly1305.New(k)
-	}
-	return &AEAD{AEAD: aead}
-}
-
-func (a *AEAD) Seal(dst, nonce, plaintext, additionalData []byte) []byte {
-	if nonce == nil {
-		nonce = IncreaseNonce(a.Nonce[:])
-	}
-	return a.AEAD.Seal(dst, nonce, plaintext, additionalData)
-}
-
-func (a *AEAD) Open(dst, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	if nonce == nil {
-		nonce = IncreaseNonce(a.Nonce[:])
-	}
-	return a.AEAD.Open(dst, nonce, ciphertext, additionalData)
-}
-
-func IncreaseNonce(nonce []byte) []byte {
-	for i := range 12 {
-		nonce[11-i]++
-		if nonce[11-i] != 0 {
-			break
-		}
-	}
-	return nonce
-}
-
-var MaxNonce = bytes.Repeat([]byte{255}, 12)
-
-func EncodeLength(l int) []byte {
-	return []byte{byte(l >> 8), byte(l)}
-}
-
-func DecodeLength(b []byte) int {
-	return int(b[0])<<8 | int(b[1])
-}
-
-func EncodeHeader(h []byte, l int) {
-	h[0] = 23
-	h[1] = 3
-	h[2] = 3
-	h[3] = byte(l >> 8)
-	h[4] = byte(l)
-}
-
-func DecodeHeader(h []byte) (l int, err error) {
-	l = int(h[3])<<8 | int(h[4])
-	if h[0] != 23 || h[1] != 3 || h[2] != 3 {
-		l = 0
-	}
-	if l < 17 || l > 17000 { // TODO: TLSv1.3 max length
-		err = errors.New("invalid header: " + fmt.Sprintf("%v", h[:5])) // DO NOT CHANGE: relied by client's Read()
-	}
-	return
-}
-
-func ParsePadding(padding string, paddingLens, paddingGaps *[][3]int) (err error) {
-	if padding == "" {
-		return
-	}
-	maxLen := 0
-	for i, s := range strings.Split(padding, ".") {
-		x := strings.Split(s, "-")
-		if len(x) < 3 || x[0] == "" || x[1] == "" || x[2] == "" {
-			return errors.New("invalid padding lenth/gap parameter: " + s)
-		}
-		y := [3]int{}
-		if y[0], err = strconv.Atoi(x[0]); err != nil {
-			return
-		}
-		if y[1], err = strconv.Atoi(x[1]); err != nil {
-			return
-		}
-		if y[2], err = strconv.Atoi(x[2]); err != nil {
-			return
-		}
-		if i == 0 && (y[0] < 100 || y[1] < 18+17 || y[2] < 18+17) {
-			return errors.New("first padding length must not be smaller than 35")
-		}
-		if i%2 == 0 {
-			*paddingLens = append(*paddingLens, y)
-			maxLen += max(y[1], y[2])
-		} else {
-			*paddingGaps = append(*paddingGaps, y)
-		}
-	}
-	if maxLen > 18+65535 {
-		return errors.New("total padding length must not be larger than 65553")
-	}
-	return
-}
-
-func CreatPadding(paddingLens, paddingGaps [][3]int) (length int, lens []int, gaps []time.Duration) {
-	if len(paddingLens) == 0 {
-		paddingLens = [][3]int{{100, 111, 1111}, {50, 0, 3333}}
-		paddingGaps = [][3]int{{75, 0, 111}}
-	}
-	for _, y := range paddingLens {
-		l := 0
-		if y[0] >= int(crypto.RandBetween(0, 100)) {
-			l = int(crypto.RandBetween(int64(y[1]), int64(y[2])))
-		}
-		lens = append(lens, l)
-		length += l
-	}
-	for _, y := range paddingGaps {
-		g := 0
-		if y[0] >= int(crypto.RandBetween(0, 100)) {
-			g = int(crypto.RandBetween(int64(y[1]), int64(y[2])))
-		}
-		gaps = append(gaps, time.Duration(g)*time.Millisecond)
-	}
-	return
-}

proxy/vless/encryption/server.go

@@ -1,328 +0,0 @@
-package encryption
-
-import (
-	"bytes"
-	"crypto/cipher"
-	"crypto/ecdh"
-	"crypto/mlkem"
-	"crypto/rand"
-	"fmt"
-	"io"
-	"net"
-	"sync"
-	"time"
-
-	"github.com/xtls/xray-core/common/crypto"
-	"github.com/xtls/xray-core/common/errors"
-	"lukechampine.com/blake3"
-)
-
-type ServerSession struct {
-	PfsKey  []byte
-	NfsKeys sync.Map
-}
-
-type ServerInstance struct {
-	NfsSKeys      []any
-	NfsPKeysBytes [][]byte
-	Hash32s       [][32]byte
-	RelaysLength  int
-	XorMode       uint32
-	SecondsFrom   int64
-	SecondsTo     int64
-	PaddingLens   [][3]int
-	PaddingGaps   [][3]int
-
-	RWLock   sync.RWMutex
-	Closed   bool
-	Lasts    map[int64][16]byte
-	Tickets  [][16]byte
-	Sessions map[[16]byte]*ServerSession
-}
-
-func (i *ServerInstance) Init(nfsSKeysBytes [][]byte, xorMode uint32, secondsFrom, secondsTo int64, padding string) (err error) {
-	if i.NfsSKeys != nil {
-		return errors.New("already initialized")
-	}
-	l := len(nfsSKeysBytes)
-	if l == 0 {
-		return errors.New("empty nfsSKeysBytes")
-	}
-	i.NfsSKeys = make([]any, l)
-	i.NfsPKeysBytes = make([][]byte, l)
-	i.Hash32s = make([][32]byte, l)
-	for j, k := range nfsSKeysBytes {
-		if len(k) == 32 {
-			if i.NfsSKeys[j], err = ecdh.X25519().NewPrivateKey(k); err != nil {
-				return
-			}
-			i.NfsPKeysBytes[j] = i.NfsSKeys[j].(*ecdh.PrivateKey).PublicKey().Bytes()
-			i.RelaysLength += 32 + 32
-		} else {
-			if i.NfsSKeys[j], err = mlkem.NewDecapsulationKey768(k); err != nil {
-				return
-			}
-			i.NfsPKeysBytes[j] = i.NfsSKeys[j].(*mlkem.DecapsulationKey768).EncapsulationKey().Bytes()
-			i.RelaysLength += 1088 + 32
-		}
-		i.Hash32s[j] = blake3.Sum256(i.NfsPKeysBytes[j])
-	}
-	i.RelaysLength -= 32
-	i.XorMode = xorMode
-	i.SecondsFrom = secondsFrom
-	i.SecondsTo = secondsTo
-	err = ParsePadding(padding, &i.PaddingLens, &i.PaddingGaps)
-	if err != nil {
-		return
-	}
-	if i.SecondsFrom > 0 || i.SecondsTo > 0 {
-		i.Lasts = make(map[int64][16]byte)
-		i.Tickets = make([][16]byte, 0, 1024)
-		i.Sessions = make(map[[16]byte]*ServerSession)
-		go func() {
-			for {
-				time.Sleep(time.Minute)
-				i.RWLock.Lock()
-				if i.Closed {
-					i.RWLock.Unlock()
-					return
-				}
-				minute := time.Now().Unix() / 60
-				last := i.Lasts[minute]
-				delete(i.Lasts, minute)
-				delete(i.Lasts, minute-1) // for insurance
-				if last != [16]byte{} {
-					for j, ticket := range i.Tickets {
-						delete(i.Sessions, ticket)
-						if ticket == last {
-							i.Tickets = i.Tickets[j+1:]
-							break
-						}
-					}
-				}
-				i.RWLock.Unlock()
-			}
-		}()
-	}
-	return
-}
-
-func (i *ServerInstance) Close() (err error) {
-	i.RWLock.Lock()
-	i.Closed = true
-	i.RWLock.Unlock()
-	return
-}
-
-func (i *ServerInstance) Handshake(conn net.Conn, fallback *[]byte) (*CommonConn, error) {
-	if i.NfsSKeys == nil {
-		return nil, errors.New("uninitialized")
-	}
-	c := NewCommonConn(conn, true)
-
-	ivAndRelays := make([]byte, 16+i.RelaysLength)
-	if _, err := io.ReadFull(conn, ivAndRelays); err != nil {
-		return nil, err
-	}
-	if fallback != nil {
-		*fallback = append(*fallback, ivAndRelays...)
-	}
-	iv := ivAndRelays[:16]
-	relays := ivAndRelays[16:]
-	var nfsKey []byte
-	var lastCTR cipher.Stream
-	for j, k := range i.NfsSKeys {
-		if lastCTR != nil {
-			lastCTR.XORKeyStream(relays, relays[:32]) // recover this relay
-		}
-		var index = 32
-		if _, ok := k.(*mlkem.DecapsulationKey768); ok {
-			index = 1088
-		}
-		if i.XorMode > 0 {
-			NewCTR(i.NfsPKeysBytes[j], iv).XORKeyStream(relays, relays[:index]) // we don't use buggy elligator2, because we have PSK :)
-		}
-		if k, ok := k.(*ecdh.PrivateKey); ok {
-			publicKey, err := ecdh.X25519().NewPublicKey(relays[:index])
-			if err != nil {
-				return nil, err
-			}
-			if publicKey.Bytes()[31] > 127 { // we just don't want the observer can change even one bit without breaking the connection, though it has nothing to do with security
-				return nil, errors.New("the highest bit of the last byte of the peer-sent X25519 public key is not 0")
-			}
-			nfsKey, err = k.ECDH(publicKey)
-			if err != nil {
-				return nil, err
-			}
-		}
-		if k, ok := k.(*mlkem.DecapsulationKey768); ok {
-			var err error
-			nfsKey, err = k.Decapsulate(relays[:index])
-			if err != nil {
-				return nil, err
-			}
-		}
-		if j == len(i.NfsSKeys)-1 {
-			break
-		}
-		relays = relays[index:]
-		lastCTR = NewCTR(nfsKey, iv)
-		lastCTR.XORKeyStream(relays, relays[:32])
-		if !bytes.Equal(relays[:32], i.Hash32s[j+1][:]) {
-			return nil, errors.New("unexpected hash32: ", fmt.Sprintf("%v", relays[:32]))
-		}
-		relays = relays[32:]
-	}
-	nfsAEAD := NewAEAD(iv, nfsKey, c.UseAES)
-
-	encryptedLength := make([]byte, 18)
-	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
-		return nil, err
-	}
-	if fallback != nil {
-		*fallback = append(*fallback, encryptedLength...)
-	}
-	decryptedLength := make([]byte, 2)
-	if _, err := nfsAEAD.Open(decryptedLength[:0], nil, encryptedLength, nil); err != nil {
-		c.UseAES = !c.UseAES
-		nfsAEAD = NewAEAD(iv, nfsKey, c.UseAES)
-		if _, err := nfsAEAD.Open(decryptedLength[:0], nil, encryptedLength, nil); err != nil {
-			return nil, err
-		}
-	}
-	if fallback != nil {
-		*fallback = nil
-	}
-	length := DecodeLength(decryptedLength)
-
-	if length == 32 {
-		if i.SecondsFrom == 0 && i.SecondsTo == 0 {
-			return nil, errors.New("0-RTT is not allowed")
-		}
-		encryptedTicket := make([]byte, 32)
-		if _, err := io.ReadFull(conn, encryptedTicket); err != nil {
-			return nil, err
-		}
-		ticket, err := nfsAEAD.Open(nil, nil, encryptedTicket, nil)
-		if err != nil {
-			return nil, err
-		}
-		i.RWLock.RLock()
-		s := i.Sessions[[16]byte(ticket)]
-		i.RWLock.RUnlock()
-		if s == nil {
-			noises := make([]byte, crypto.RandBetween(1279, 2279)) // matches 1-RTT's server hello length for "random", though it is not important, just for example
-			var err error
-			for err == nil {
-				rand.Read(noises)
-				_, err = DecodeHeader(noises)
-			}
-			conn.Write(noises) // make client do new handshake
-			return nil, errors.New("expired ticket")
-		}
-		if _, loaded := s.NfsKeys.LoadOrStore([32]byte(nfsKey), true); loaded { // prevents bad client also
-			return nil, errors.New("replay detected")
-		}
-		c.UnitedKey = append(s.PfsKey, nfsKey...) // the same nfsKey links the upload & download (prevents server -> client's another request)
-		c.PreWrite = make([]byte, 16)
-		rand.Read(c.PreWrite) // always trust yourself, not the client (also prevents being parsed as TLS thus causing false interruption for "native" and "xorpub")
-		c.AEAD = NewAEAD(c.PreWrite, c.UnitedKey, c.UseAES)
-		c.PeerAEAD = NewAEAD(encryptedTicket, c.UnitedKey, c.UseAES) // unchangeable ctx (prevents server -> server), and different ctx length for upload / download (prevents client -> client)
-		if i.XorMode == 2 {
-			c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, c.PreWrite), NewCTR(c.UnitedKey, iv), 16, 0) // it doesn't matter if the attacker sends client's iv back to the client
-		}
-		return c, nil
-	}
-
-	if length < 1184+32+16 { // client may send more public keys in the future's version
-		return nil, errors.New("too short length")
-	}
-	encryptedPfsPublicKey := make([]byte, length)
-	if _, err := io.ReadFull(conn, encryptedPfsPublicKey); err != nil {
-		return nil, err
-	}
-	if _, err := nfsAEAD.Open(encryptedPfsPublicKey[:0], nil, encryptedPfsPublicKey, nil); err != nil {
-		return nil, err
-	}
-	mlkem768EKey, err := mlkem.NewEncapsulationKey768(encryptedPfsPublicKey[:1184])
-	if err != nil {
-		return nil, err
-	}
-	mlkem768Key, encapsulatedPfsKey := mlkem768EKey.Encapsulate()
-	peerX25519PKey, err := ecdh.X25519().NewPublicKey(encryptedPfsPublicKey[1184 : 1184+32])
-	if err != nil {
-		return nil, err
-	}
-	x25519SKey, _ := ecdh.X25519().GenerateKey(rand.Reader)
-	x25519Key, err := x25519SKey.ECDH(peerX25519PKey)
-	if err != nil {
-		return nil, err
-	}
-	pfsKey := make([]byte, 32+32) // no more capacity
-	copy(pfsKey, mlkem768Key)
-	copy(pfsKey[32:], x25519Key)
-	pfsPublicKey := append(encapsulatedPfsKey, x25519SKey.PublicKey().Bytes()...)
-	c.UnitedKey = append(pfsKey, nfsKey...)
-	c.AEAD = NewAEAD(pfsPublicKey, c.UnitedKey, c.UseAES)
-	c.PeerAEAD = NewAEAD(encryptedPfsPublicKey[:1184+32], c.UnitedKey, c.UseAES)
-
-	ticket := [16]byte{}
-	rand.Read(ticket[:])
-	var seconds int64
-	if i.SecondsTo == 0 {
-		seconds = i.SecondsFrom * crypto.RandBetween(50, 100) / 100
-	} else {
-		seconds = crypto.RandBetween(i.SecondsFrom, i.SecondsTo)
-	}
-	copy(ticket[:], EncodeLength(int(seconds)))
-	if seconds > 0 {
-		i.RWLock.Lock()
-		i.Lasts[(time.Now().Unix()+max(i.SecondsFrom, i.SecondsTo))/60+2] = ticket
-		i.Tickets = append(i.Tickets, ticket)
-		i.Sessions[ticket] = &ServerSession{PfsKey: pfsKey}
-		i.RWLock.Unlock()
-	}
-
-	pfsKeyExchangeLength := 1088 + 32 + 16
-	encryptedTicketLength := 32
-	paddingLength, paddingLens, paddingGaps := CreatPadding(i.PaddingLens, i.PaddingGaps)
-	serverHello := make([]byte, pfsKeyExchangeLength+encryptedTicketLength+paddingLength)
-	nfsAEAD.Seal(serverHello[:0], MaxNonce, pfsPublicKey, nil)
-	c.AEAD.Seal(serverHello[:pfsKeyExchangeLength], nil, ticket[:], nil)
-	padding := serverHello[pfsKeyExchangeLength+encryptedTicketLength:]
-	c.AEAD.Seal(padding[:0], nil, EncodeLength(paddingLength-18), nil)
-	c.AEAD.Seal(padding[:18], nil, padding[18:paddingLength-16], nil)
-
-	paddingLens[0] = pfsKeyExchangeLength + encryptedTicketLength + paddingLens[0]
-	for i, l := range paddingLens { // sends padding in a fragmented way, to create variable traffic pattern, before inner VLESS flow takes control
-		if l > 0 {
-			if _, err := conn.Write(serverHello[:l]); err != nil {
-				return nil, err
-			}
-			serverHello = serverHello[l:]
-		}
-		if len(paddingGaps) > i {
-			time.Sleep(paddingGaps[i])
-		}
-	}
-
-	// important: allows client sends padding slowly, eliminating 1-RTT's traffic pattern
-	if _, err := io.ReadFull(conn, encryptedLength); err != nil {
-		return nil, err
-	}
-	if _, err := nfsAEAD.Open(encryptedLength[:0], nil, encryptedLength, nil); err != nil {
-		return nil, err
-	}
-	encryptedPadding := make([]byte, DecodeLength(encryptedLength[:2]))
-	if _, err := io.ReadFull(conn, encryptedPadding); err != nil {
-		return nil, err
-	}
-	if _, err := nfsAEAD.Open(encryptedPadding[:0], nil, encryptedPadding, nil); err != nil {
-		return nil, err
-	}
-
-	if i.XorMode == 2 {
-		c.Conn = NewXorConn(conn, NewCTR(c.UnitedKey, ticket[:]), NewCTR(c.UnitedKey, iv), 0, 0)
-	}
-	return c, nil
-}

proxy/vless/encryption/xor.go

@@ -1,93 +0,0 @@
-package encryption
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-	"net"
-
-	"lukechampine.com/blake3"
-)
-
-func NewCTR(key, iv []byte) cipher.Stream {
-	k := make([]byte, 32)
-	blake3.DeriveKey(k, "VLESS", key) // avoids using key directly
-	block, _ := aes.NewCipher(k)
-	return cipher.NewCTR(block, iv)
-	//chacha20.NewUnauthenticatedCipher()
-}
-
-type XorConn struct {
-	net.Conn
-	CTR       cipher.Stream
-	PeerCTR   cipher.Stream
-	OutSkip   int
-	OutHeader []byte
-	InSkip    int
-	InHeader  []byte
-}
-
-func NewXorConn(conn net.Conn, ctr, peerCTR cipher.Stream, outSkip, inSkip int) *XorConn {
-	return &XorConn{
-		Conn:      conn,
-		CTR:       ctr,
-		PeerCTR:   peerCTR,
-		OutSkip:   outSkip,
-		OutHeader: make([]byte, 0, 5), // important
-		InSkip:    inSkip,
-		InHeader:  make([]byte, 0, 5), // important
-	}
-}
-
-func (c *XorConn) Write(b []byte) (int, error) {
-	if len(b) == 0 {
-		return 0, nil
-	}
-	for p := b; ; {
-		if len(p) <= c.OutSkip {
-			c.OutSkip -= len(p)
-			break
-		}
-		p = p[c.OutSkip:]
-		c.OutSkip = 0
-		need := 5 - len(c.OutHeader)
-		if len(p) < need {
-			c.OutHeader = append(c.OutHeader, p...)
-			c.CTR.XORKeyStream(p, p)
-			break
-		}
-		c.OutSkip, _ = DecodeHeader(append(c.OutHeader, p[:need]...))
-		c.OutHeader = c.OutHeader[:0]
-		c.CTR.XORKeyStream(p[:need], p[:need])
-		p = p[need:]
-	}
-	if _, err := c.Conn.Write(b); err != nil {
-		return 0, err
-	}
-	return len(b), nil
-}
-
-func (c *XorConn) Read(b []byte) (int, error) {
-	if len(b) == 0 {
-		return 0, nil
-	}
-	n, err := c.Conn.Read(b)
-	for p := b[:n]; ; {
-		if len(p) <= c.InSkip {
-			c.InSkip -= len(p)
-			break
-		}
-		p = p[c.InSkip:]
-		c.InSkip = 0
-		need := 5 - len(c.InHeader)
-		if len(p) < need {
-			c.PeerCTR.XORKeyStream(p, p)
-			c.InHeader = append(c.InHeader, p...)
-			break
-		}
-		c.PeerCTR.XORKeyStream(p[:need], p[:need])
-		c.InSkip, _ = DecodeHeader(append(c.InHeader, p[:need]...))
-		c.InHeader = c.InHeader[:0]
-		p = p[need:]
-	}
-	return n, err
-}

proxy/vless/inbound/config.pb.go

@@ -111,13 +111,11 @@ type Config struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Clients     []*protocol.User `protobuf:"bytes,1,rep,name=clients,proto3" json:"clients,omitempty"`
+	Clients []*protocol.User `protobuf:"bytes,1,rep,name=clients,proto3" json:"clients,omitempty"`
-	Fallbacks   []*Fallback      `protobuf:"bytes,2,rep,name=fallbacks,proto3" json:"fallbacks,omitempty"`
+	// Decryption settings. Only applies to server side, and only accepts "none"
-	Decryption  string           `protobuf:"bytes,3,opt,name=decryption,proto3" json:"decryption,omitempty"`
+	// for now.
-	XorMode     uint32           `protobuf:"varint,4,opt,name=xorMode,proto3" json:"xorMode,omitempty"`
+	Decryption string      `protobuf:"bytes,2,opt,name=decryption,proto3" json:"decryption,omitempty"`
-	SecondsFrom int64            `protobuf:"varint,5,opt,name=seconds_from,json=secondsFrom,proto3" json:"seconds_from,omitempty"`
+	Fallbacks  []*Fallback `protobuf:"bytes,3,rep,name=fallbacks,proto3" json:"fallbacks,omitempty"`
-	SecondsTo   int64            `protobuf:"varint,6,opt,name=seconds_to,json=secondsTo,proto3" json:"seconds_to,omitempty"`
-	Padding     string           `protobuf:"bytes,7,opt,name=padding,proto3" json:"padding,omitempty"`
 }
 
 func (x *Config) Reset() {
@@ -157,13 +155,6 @@ func (x *Config) GetClients() []*protocol.User {
 	return nil
 }
 
-func (x *Config) GetFallbacks() []*Fallback {
-	if x != nil {
-		return x.Fallbacks
-	}
-	return nil
-}
-
 func (x *Config) GetDecryption() string {
 	if x != nil {
 		return x.Decryption
@@ -171,32 +162,11 @@ func (x *Config) GetDecryption() string {
 	return ""
 }
 
-func (x *Config) GetXorMode() uint32 {
+func (x *Config) GetFallbacks() []*Fallback {
 	if x != nil {
-		return x.XorMode
+		return x.Fallbacks
 	}
-	return 0
+	return nil
-}
-
-func (x *Config) GetSecondsFrom() int64 {
-	if x != nil {
-		return x.SecondsFrom
-	}
-	return 0
-}
-
-func (x *Config) GetSecondsTo() int64 {
-	if x != nil {
-		return x.SecondsTo
-	}
-	return 0
-}
-
-func (x *Config) GetPadding() string {
-	if x != nil {
-		return x.Padding
-	}
-	return ""
 }
 
 var File_proxy_vless_inbound_config_proto protoreflect.FileDescriptor
@@ -215,32 +185,25 @@ var file_proxy_vless_inbound_config_proto_rawDesc = []byte{
 	0x68, 0x12, 0x12, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x64, 0x65, 0x73, 0x74, 0x18, 0x05, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x78, 0x76, 0x65,
-	0x72, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x04, 0x78, 0x76, 0x65, 0x72, 0x22, 0x96, 0x02,
+	0x72, 0x18, 0x06, 0x20, 0x01, 0x28, 0x04, 0x52, 0x04, 0x78, 0x76, 0x65, 0x72, 0x22, 0xa0, 0x01,
 	0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x34, 0x0a, 0x07, 0x63, 0x6c, 0x69, 0x65,
 	0x6e, 0x74, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78, 0x72, 0x61, 0x79,
 	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c,
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+	0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x07, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12, 0x1e,
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+	0x0a, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x02, 0x20, 0x01,
+	0x28, 0x09, 0x52, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x40,
+	0x0a, 0x09, 0x66, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28,
 	0x0b, 0x32, 0x22, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76,
 	0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x2e, 0x46, 0x61, 0x6c,
 	0x6c, 0x62, 0x61, 0x63, 0x6b, 0x52, 0x09, 0x66, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x73,
-	0x12, 0x1e, 0x0a, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03,
+	0x42, 0x6a, 0x0a, 0x1c, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f,
-	0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x64, 0x65, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e,
+	0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64,
-	0x12, 0x18, 0x0a, 0x07, 0x78, 0x6f, 0x72, 0x4d, 0x6f, 0x64, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28,
+	0x50, 0x01, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
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+	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72,
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+	0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e,
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+	0x64, 0xaa, 0x02, 0x18, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56,
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+	0x6c, 0x65, 0x73, 0x73, 0x2e, 0x49, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x62, 0x06, 0x70, 0x72,
-	0x03, 0x52, 0x09, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x73, 0x54, 0x6f, 0x12, 0x18, 0x0a, 0x07,
+	0x6f, 0x74, 0x6f, 0x33,
-	0x70, 0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x18, 0x07, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x70,
-	0x61, 0x64, 0x64, 0x69, 0x6e, 0x67, 0x42, 0x6a, 0x0a, 0x1c, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x69,
-	0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
-	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63,
-	0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x76, 0x6c, 0x65, 0x73, 0x73, 0x2f,
-	0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0xaa, 0x02, 0x18, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50,
-	0x72, 0x6f, 0x78, 0x79, 0x2e, 0x56, 0x6c, 0x65, 0x73, 0x73, 0x2e, 0x49, 0x6e, 0x62, 0x6f, 0x75,
-	0x6e, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

proxy/vless/inbound/config.proto

@@ -19,11 +19,8 @@ message Fallback {
 
 message Config {
   repeated xray.common.protocol.User clients = 1;
-  repeated Fallback fallbacks = 2;
+  // Decryption settings. Only applies to server side, and only accepts "none"
-
+  // for now.
-  string decryption = 3;
+  string decryption = 2;
-  uint32 xorMode = 4;
+  repeated Fallback fallbacks = 3;
-  int64 seconds_from = 5;
-  int64 seconds_to = 6;
-  string padding = 7;
 }

proxy/vless/inbound/inbound.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	gotls "crypto/tls"
-	"encoding/base64"
 	"io"
 	"reflect"
 	"strconv"
@@ -12,31 +11,24 @@ import (
 	"time"
 	"unsafe"
 
-	"github.com/xtls/xray-core/app/dispatcher"
-	"github.com/xtls/xray-core/app/reverse"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
-	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/retry"
-	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal"
 	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 	feature_inbound "github.com/xtls/xray-core/features/inbound"
-	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 	"github.com/xtls/xray-core/proxy/vless/encoding"
-	"github.com/xtls/xray-core/proxy/vless/encryption"
-	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet/reality"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
@@ -71,14 +63,11 @@ func init() {
 
 // Handler is an inbound connection handler that handles messages in VLess protocol.
 type Handler struct {
-	inboundHandlerManager  feature_inbound.Manager
+	inboundHandlerManager feature_inbound.Manager
-	policyManager          policy.Manager
+	policyManager         policy.Manager
-	validator              vless.Validator
+	validator             vless.Validator
-	decryption             *encryption.ServerInstance
+	dns                   dns.Client
-	outboundHandlerManager outbound.Manager
+	fallbacks             map[string]map[string]map[string]*Fallback // or nil
-	defaultDispatcher      *dispatcher.DefaultDispatcher
-	ctx                    context.Context
-	fallbacks              map[string]map[string]map[string]*Fallback // or nil
 	// regexps               map[string]*regexp.Regexp       // or nil
 }
 
@@ -86,25 +75,10 @@ type Handler struct {
 func New(ctx context.Context, config *Config, dc dns.Client, validator vless.Validator) (*Handler, error) {
 	v := core.MustFromContext(ctx)
 	handler := &Handler{
-		inboundHandlerManager:  v.GetFeature(feature_inbound.ManagerType()).(feature_inbound.Manager),
+		inboundHandlerManager: v.GetFeature(feature_inbound.ManagerType()).(feature_inbound.Manager),
-		policyManager:          v.GetFeature(policy.ManagerType()).(policy.Manager),
+		policyManager:         v.GetFeature(policy.ManagerType()).(policy.Manager),
-		validator:              validator,
+		dns:                   dc,
-		outboundHandlerManager: v.GetFeature(outbound.ManagerType()).(outbound.Manager),
+		validator:             validator,
-		defaultDispatcher:      v.GetFeature(routing.DispatcherType()).(*dispatcher.DefaultDispatcher),
-		ctx:                    ctx,
-	}
-
-	if config.Decryption != "" && config.Decryption != "none" {
-		s := strings.Split(config.Decryption, ".")
-		var nfsSKeysBytes [][]byte
-		for _, r := range s {
-			b, _ := base64.RawURLEncoding.DecodeString(r)
-			nfsSKeysBytes = append(nfsSKeysBytes, b)
-		}
-		handler.decryption = &encryption.ServerInstance{}
-		if err := handler.decryption.Init(nfsSKeysBytes, config.XorMode, config.SecondsFrom, config.SecondsTo, config.Padding); err != nil {
-			return nil, errors.New("failed to use decryption").Base(err).AtError()
-		}
 	}
 
 	if config.Fallbacks != nil {
@@ -183,49 +157,8 @@ func isMuxAndNotXUDP(request *protocol.RequestHeader, first *buf.Buffer) bool {
 		firstBytes[6] == 2) // Network type: UDP
 }
 
-func (h *Handler) GetReverse(a *vless.MemoryAccount) (*Reverse, error) {
-	u := h.validator.Get(a.ID.UUID())
-	if u == nil {
-		return nil, errors.New("reverse: user " + a.ID.String() + " doesn't exist anymore")
-	}
-	a = u.Account.(*vless.MemoryAccount)
-	if a.Reverse == nil || a.Reverse.Tag == "" {
-		return nil, errors.New("reverse: user " + a.ID.String() + " is not allowed to create reverse proxy")
-	}
-	r := h.outboundHandlerManager.GetHandler(a.Reverse.Tag)
-	if r == nil {
-		picker, _ := reverse.NewStaticMuxPicker()
-		r = &Reverse{tag: a.Reverse.Tag, picker: picker, client: &mux.ClientManager{Picker: picker}}
-		for len(h.outboundHandlerManager.ListHandlers(h.ctx)) == 0 {
-			time.Sleep(time.Second) // prevents this outbound from becoming the default outbound
-		}
-		if err := h.outboundHandlerManager.AddHandler(h.ctx, r); err != nil {
-			return nil, err
-		}
-	}
-	if r, ok := r.(*Reverse); ok {
-		return r, nil
-	}
-	return nil, errors.New("reverse: outbound " + a.Reverse.Tag + " is not type Reverse")
-}
-
-func (h *Handler) RemoveReverse(u *protocol.MemoryUser) {
-	if u != nil {
-		a := u.Account.(*vless.MemoryAccount)
-		if a.Reverse != nil && a.Reverse.Tag != "" {
-			h.outboundHandlerManager.RemoveHandler(h.ctx, a.Reverse.Tag)
-		}
-	}
-}
-
 // Close implements common.Closable.Close().
 func (h *Handler) Close() error {
-	if h.decryption != nil {
-		h.decryption.Close()
-	}
-	for _, u := range h.validator.GetAll() {
-		h.RemoveReverse(u)
-	}
 	return errors.Combine(common.Close(h.validator))
 }
 
@@ -236,7 +169,6 @@ func (h *Handler) AddUser(ctx context.Context, u *protocol.MemoryUser) error {
 
 // RemoveUser implements proxy.UserManager.RemoveUser().
 func (h *Handler) RemoveUser(ctx context.Context, e string) error {
-	h.RemoveReverse(h.validator.GetByEmail(e))
 	return h.validator.Del(e)
 }
 
@@ -267,13 +199,6 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 		iConn = statConn.Connection
 	}
 
-	if h.decryption != nil {
-		var err error
-		if connection, err = h.decryption.Handshake(connection, nil); err != nil {
-			return errors.New("ML-KEM-768 handshake failed").Base(err).AtInfo()
-		}
-	}
-
 	sessionPolicy := h.policyManager.ForLevel(0)
 	if err := connection.SetReadDeadline(time.Now().Add(sessionPolicy.Timeouts.Handshake)); err != nil {
 		return errors.New("unable to set read deadline").Base(err).AtWarning()
@@ -281,10 +206,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 
 	first := buf.FromBytes(make([]byte, buf.Size))
 	first.Clear()
-	firstLen, errR := first.ReadFrom(connection)
+	firstLen, _ := first.ReadFrom(connection)
-	if errR != nil {
-		return errR
-	}
 	errors.LogInfo(ctx, "firstLen = ", firstLen)
 
 	reader := &buf.BufferedReader{
@@ -548,19 +470,12 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 			switch request.Command {
 			case protocol.RequestCommandUDP:
 				return errors.New(requestAddons.Flow + " doesn't support UDP").AtWarning()
-			case protocol.RequestCommandMux, protocol.RequestCommandRvs:
+			case protocol.RequestCommandMux:
-				inbound.CanSpliceCopy = 3
 				fallthrough // we will break Mux connections that contain TCP requests
 			case protocol.RequestCommandTCP:
 				var t reflect.Type
 				var p uintptr
-				if commonConn, ok := connection.(*encryption.CommonConn); ok {
+				if tlsConn, ok := iConn.(*tls.Conn); ok {
-					if _, ok := commonConn.Conn.(*encryption.XorConn); ok || !proxy.IsRAWTransportWithoutSecurity(iConn) {
-						inbound.CanSpliceCopy = 3 // full-random xorConn / non-RAW transport / another securityConn should not be penetrated
-					}
-					t = reflect.TypeOf(commonConn).Elem()
-					p = uintptr(unsafe.Pointer(commonConn))
-				} else if tlsConn, ok := iConn.(*tls.Conn); ok {
 					if tlsConn.ConnectionState().Version != gotls.VersionTLS13 {
 						return errors.New(`failed to use `+requestAddons.Flow+`, found outer tls version `, tlsConn.ConnectionState().Version).AtWarning()
 					}
@@ -601,87 +516,89 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
 		ctx = session.ContextWithAllowedNetwork(ctx, net.Network_UDP)
 	}
 
+	sessionPolicy = h.policyManager.ForLevel(request.User.Level)
+	ctx, cancel := context.WithCancel(ctx)
+	timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
+	inbound.Timer = timer
+	ctx = policy.ContextWithBufferPolicy(ctx, sessionPolicy.Buffer)
+
+	link, err := dispatcher.Dispatch(ctx, request.Destination())
+	if err != nil {
+		return errors.New("failed to dispatch request to ", request.Destination()).Base(err).AtWarning()
+	}
+
+	serverReader := link.Reader // .(*pipe.Reader)
+	serverWriter := link.Writer // .(*pipe.Writer)
 	trafficState := proxy.NewTrafficState(userSentID)
-	clientReader := encoding.DecodeBodyAddons(reader, request, requestAddons)
+	postRequest := func() error {
-	if requestAddons.Flow == vless.XRV {
+		defer timer.SetTimeout(sessionPolicy.Timeouts.DownlinkOnly)
-		clientReader = proxy.NewVisionReader(clientReader, trafficState, true, ctx, connection, input, rawInput, nil)
-	}
 
-	bufferWriter := buf.NewBufferedWriter(buf.NewWriter(connection))
+		// default: clientReader := reader
-	if err := encoding.EncodeResponseHeader(bufferWriter, request, responseAddons); err != nil {
+		clientReader := encoding.DecodeBodyAddons(reader, request, requestAddons)
-		return errors.New("failed to encode response header").Base(err).AtWarning()
+
-	}
+		var err error
-	clientWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons, trafficState, false, ctx, connection, nil)
+
-	bufferWriter.SetFlushNext()
+		if requestAddons.Flow == vless.XRV {
+			ctx1 := session.ContextWithInbound(ctx, nil) // TODO enable splice
+			clientReader = proxy.NewVisionReader(clientReader, trafficState, true, ctx1)
+			err = encoding.XtlsRead(clientReader, serverWriter, timer, connection, input, rawInput, trafficState, nil, true, ctx1)
+		} else {
+			// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBuffer
+			err = buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer))
+		}
 
-	if request.Command == protocol.RequestCommandRvs {
-		r, err := h.GetReverse(account)
 		if err != nil {
-			return err
+			return errors.New("failed to transfer request payload").Base(err).AtInfo()
 		}
-		return r.NewMux(ctx, h.defaultDispatcher.WrapLink(ctx, &transport.Link{Reader: clientReader, Writer: clientWriter}))
+
+		return nil
 	}
 
-	if err := dispatcher.DispatchLink(ctx, request.Destination(), &transport.Link{
+	getResponse := func() error {
-		Reader: clientReader,
+		defer timer.SetTimeout(sessionPolicy.Timeouts.UplinkOnly)
-		Writer: clientWriter},
-	); err != nil {
-		return errors.New("failed to dispatch request").Base(err)
-	}
-	return nil
-}
 
-type Reverse struct {
+		bufferWriter := buf.NewBufferedWriter(buf.NewWriter(connection))
-	tag    string
+		if err := encoding.EncodeResponseHeader(bufferWriter, request, responseAddons); err != nil {
-	picker *reverse.StaticMuxPicker
+			return errors.New("failed to encode response header").Base(err).AtWarning()
-	client *mux.ClientManager
-}
-
-func (r *Reverse) Tag() string {
-	return r.tag
-}
-
-func (r *Reverse) NewMux(ctx context.Context, link *transport.Link) error {
-	muxClient, err := mux.NewClientWorker(*link, mux.ClientStrategy{})
-	if err != nil {
-		return errors.New("failed to create mux client worker").Base(err).AtWarning()
-	}
-	worker, err := reverse.NewPortalWorker(muxClient)
-	if err != nil {
-		return errors.New("failed to create portal worker").Base(err).AtWarning()
-	}
-	r.picker.AddWorker(worker)
-	select {
-	case <-ctx.Done():
-	case <-muxClient.WaitClosed():
-	}
-	return nil
-}
-
-func (r *Reverse) Dispatch(ctx context.Context, link *transport.Link) {
-	outbounds := session.OutboundsFromContext(ctx)
-	ob := outbounds[len(outbounds)-1]
-	if ob != nil {
-		if ob.Target.Network == net.Network_UDP && ob.OriginalTarget.Address != nil && ob.OriginalTarget.Address != ob.Target.Address {
-			link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
-			link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: ob.Target.Address, OriginalDest: ob.OriginalTarget.Address}
 		}
-		r.client.Dispatch(ctx, link)
+
+		// default: clientWriter := bufferWriter
+		clientWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons, trafficState, false, ctx)
+		multiBuffer, err1 := serverReader.ReadMultiBuffer()
+		if err1 != nil {
+			return err1 // ...
+		}
+		if err := clientWriter.WriteMultiBuffer(multiBuffer); err != nil {
+			return err // ...
+		}
+		// Flush; bufferWriter.WriteMultiBuffer now is bufferWriter.writer.WriteMultiBuffer
+		if err := bufferWriter.SetBuffered(false); err != nil {
+			return errors.New("failed to write A response payload").Base(err).AtWarning()
+		}
+
+		var err error
+		if requestAddons.Flow == vless.XRV {
+			err = encoding.XtlsWrite(serverReader, clientWriter, timer, connection, trafficState, nil, false, ctx)
+		} else {
+			// from serverReader.ReadMultiBuffer to clientWriter.WriteMultiBuffer
+			err = buf.Copy(serverReader, clientWriter, buf.UpdateActivity(timer))
+		}
+		if err != nil {
+			return errors.New("failed to transfer response payload").Base(err).AtInfo()
+		}
+		// Indicates the end of response payload.
+		switch responseAddons.Flow {
+		default:
+		}
+
+		return nil
 	}
-}
 
-func (r *Reverse) Start() error {
+	if err := task.Run(ctx, task.OnSuccess(postRequest, task.Close(serverWriter)), getResponse); err != nil {
-	return nil
+		common.Interrupt(serverReader)
-}
+		common.Interrupt(serverWriter)
+		return errors.New("connection ends").Base(err).AtInfo()
+	}
 
-func (r *Reverse) Close() error {
-	return nil
-}
-
-func (r *Reverse) SenderSettings() *serial.TypedMessage {
-	return nil
-}
-
-func (r *Reverse) ProxySettings() *serial.TypedMessage {
 	return nil
 }

proxy/vless/outbound/config.pb.go

@@ -26,7 +26,7 @@ type Config struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Vnext *protocol.ServerEndpoint `protobuf:"bytes,1,opt,name=vnext,proto3" json:"vnext,omitempty"`
+	Vnext []*protocol.ServerEndpoint `protobuf:"bytes,1,rep,name=vnext,proto3" json:"vnext,omitempty"`
 }
 
 func (x *Config) Reset() {
@@ -59,7 +59,7 @@ func (*Config) Descriptor() ([]byte, []int) {
 	return file_proxy_vless_outbound_config_proto_rawDescGZIP(), []int{0}
 }
 
-func (x *Config) GetVnext() *protocol.ServerEndpoint {
+func (x *Config) GetVnext() []*protocol.ServerEndpoint {
 	if x != nil {
 		return x.Vnext
 	}
@@ -76,7 +76,7 @@ var file_proxy_vless_outbound_config_proto_rawDesc = []byte{
 	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, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61,
+	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, 0x6d, 0x0a, 0x1d, 0x63, 0x6f, 0x6d, 0x2e, 0x78,

proxy/vless/outbound/config.proto

@@ -9,5 +9,5 @@ option java_multiple_files = true;
 import "common/protocol/server_spec.proto";
 
 message Config {
-  xray.common.protocol.ServerEndpoint vnext = 1;
+  repeated xray.common.protocol.ServerEndpoint vnext = 1;
 }

proxy/vless/outbound/outbound.go

@@ -4,19 +4,14 @@ import (
 	"bytes"
 	"context"
 	gotls "crypto/tls"
-	"encoding/base64"
 	"reflect"
-	"strings"
 	"time"
 	"unsafe"
 
 	utls "github.com/refraction-networking/utls"
-	proxyman "github.com/xtls/xray-core/app/proxyman/outbound"
-	"github.com/xtls/xray-core/app/reverse"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
-	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/retry"
@@ -26,17 +21,14 @@ import (
 	"github.com/xtls/xray-core/common/xudp"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
-	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/proxy/vless"
 	"github.com/xtls/xray-core/proxy/vless/encoding"
-	"github.com/xtls/xray-core/proxy/vless/encryption"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/reality"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
-	"github.com/xtls/xray-core/transport/pipe"
 )
 
 func init() {
@@ -47,87 +39,49 @@ func init() {
 
 // Handler is an outbound connection handler for VLess protocol.
 type Handler struct {
-	server        *protocol.ServerSpec
+	serverList    *protocol.ServerList
+	serverPicker  protocol.ServerPicker
 	policyManager policy.Manager
 	cone          bool
-	encryption    *encryption.ClientInstance
-	reverse       *Reverse
 }
 
 // New creates a new VLess outbound handler.
 func New(ctx context.Context, config *Config) (*Handler, error) {
-	if config.Vnext == nil {
+	serverList := protocol.NewServerList()
-		return nil, errors.New(`no vnext found`)
+	for _, rec := range config.Vnext {
-	}
+		s, err := protocol.NewServerSpecFromPB(rec)
-	server, err := protocol.NewServerSpecFromPB(config.Vnext)
+		if err != nil {
-	if err != nil {
+			return nil, errors.New("failed to parse server spec").Base(err).AtError()
-		return nil, errors.New("failed to get server spec").Base(err).AtError()
+		}
+		serverList.AddServer(s)
 	}
 
 	v := core.MustFromContext(ctx)
 	handler := &Handler{
-		server:        server,
+		serverList:    serverList,
+		serverPicker:  protocol.NewRoundRobinServerPicker(serverList),
 		policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
 		cone:          ctx.Value("cone").(bool),
 	}
 
-	a := handler.server.User.Account.(*vless.MemoryAccount)
-	if a.Encryption != "" && a.Encryption != "none" {
-		s := strings.Split(a.Encryption, ".")
-		var nfsPKeysBytes [][]byte
-		for _, r := range s {
-			b, _ := base64.RawURLEncoding.DecodeString(r)
-			nfsPKeysBytes = append(nfsPKeysBytes, b)
-		}
-		handler.encryption = &encryption.ClientInstance{}
-		if err := handler.encryption.Init(nfsPKeysBytes, a.XorMode, a.Seconds, a.Padding); err != nil {
-			return nil, errors.New("failed to use encryption").Base(err).AtError()
-		}
-	}
-
-	if a.Reverse != nil {
-		handler.reverse = &Reverse{
-			tag:        a.Reverse.Tag,
-			dispatcher: v.GetFeature(routing.DispatcherType()).(routing.Dispatcher),
-			ctx:        ctx,
-			handler:    handler,
-		}
-		handler.reverse.monitorTask = &task.Periodic{
-			Execute:  handler.reverse.monitor,
-			Interval: time.Second * 2,
-		}
-		go func() {
-			time.Sleep(2 * time.Second)
-			handler.reverse.Start()
-		}()
-	}
-
 	return handler, nil
 }
 
-// Close implements common.Closable.Close().
-func (h *Handler) Close() error {
-	if h.reverse != nil {
-		return h.reverse.Close()
-	}
-	return nil
-}
-
 // Process implements proxy.Outbound.Process().
 func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
 	outbounds := session.OutboundsFromContext(ctx)
 	ob := outbounds[len(outbounds)-1]
-	if !ob.Target.IsValid() && ob.Target.Address.String() != "v1.rvs.cool" {
+	if !ob.Target.IsValid() {
 		return errors.New("target not specified").AtError()
 	}
 	ob.Name = "vless"
 
-	rec := h.server
+	var rec *protocol.ServerSpec
 	var conn stat.Connection
-
 	if err := retry.ExponentialBackoff(5, 200).On(func() error {
+		rec = h.serverPicker.PickServer()
 		var err error
-		conn, err = dialer.Dial(ctx, rec.Destination)
+		conn, err = dialer.Dial(ctx, rec.Destination())
 		if err != nil {
 			return err
 		}
@@ -142,34 +96,19 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		iConn = statConn.Connection
 	}
 	target := ob.Target
-	errors.LogInfo(ctx, "tunneling request to ", target, " via ", rec.Destination.NetAddr())
+	errors.LogInfo(ctx, "tunneling request to ", target, " via ", rec.Destination().NetAddr())
-
-	if h.encryption != nil {
-		var err error
-		if conn, err = h.encryption.Handshake(conn); err != nil {
-			return errors.New("ML-KEM-768 handshake failed").Base(err).AtInfo()
-		}
-	}
 
 	command := protocol.RequestCommandTCP
 	if target.Network == net.Network_UDP {
 		command = protocol.RequestCommandUDP
 	}
-	if target.Address.Family().IsDomain() {
+	if target.Address.Family().IsDomain() && target.Address.Domain() == "v1.mux.cool" {
-		switch target.Address.Domain() {
+		command = protocol.RequestCommandMux
-		case "v1.mux.cool":
-			command = protocol.RequestCommandMux
-		case "v1.rvs.cool":
-			if target.Network != net.Network_Unknown {
-				return errors.New("nice try baby").AtError()
-			}
-			command = protocol.RequestCommandRvs
-		}
 	}
 
 	request := &protocol.RequestHeader{
 		Version: encoding.Version,
-		User:    rec.User,
+		User:    rec.PickUser(),
 		Command: command,
 		Address: target.Address,
 		Port:    target.Port,
@@ -201,13 +140,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		case protocol.RequestCommandTCP:
 			var t reflect.Type
 			var p uintptr
-			if commonConn, ok := conn.(*encryption.CommonConn); ok {
+			if tlsConn, ok := iConn.(*tls.Conn); ok {
-				if _, ok := commonConn.Conn.(*encryption.XorConn); ok || !proxy.IsRAWTransportWithoutSecurity(iConn) {
-					ob.CanSpliceCopy = 3 // full-random xorConn / non-RAW transport / another securityConn should not be penetrated
-				}
-				t = reflect.TypeOf(commonConn).Elem()
-				p = uintptr(unsafe.Pointer(commonConn))
-			} else if tlsConn, ok := iConn.(*tls.Conn); ok {
 				t = reflect.TypeOf(tlsConn.Conn).Elem()
 				p = uintptr(unsafe.Pointer(tlsConn.Conn))
 			} else if utlsConn, ok := iConn.(*tls.UConn); ok {
@@ -261,7 +194,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		}
 
 		// default: serverWriter := bufferWriter
-		serverWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons, trafficState, true, ctx, conn, ob)
+		serverWriter := encoding.EncodeBodyAddons(bufferWriter, request, requestAddons, trafficState, true, ctx)
 		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
 			serverWriter = xudp.NewPacketWriter(serverWriter, target, xudp.GetGlobalID(ctx))
 		}
@@ -289,6 +222,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 			return errors.New("failed to write A request payload").Base(err).AtWarning()
 		}
 
+		var err error
 		if requestAddons.Flow == vless.XRV {
 			if tlsConn, ok := iConn.(*tls.Conn); ok {
 				if tlsConn.ConnectionState().Version != gotls.VersionTLS13 {
@@ -299,8 +233,12 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 					return errors.New(`failed to use `+requestAddons.Flow+`, found outer tls version `, utlsConn.ConnectionState().Version).AtWarning()
 				}
 			}
+			ctx1 := session.ContextWithInbound(ctx, nil) // TODO enable splice
+			err = encoding.XtlsWrite(clientReader, serverWriter, timer, conn, trafficState, ob, true, ctx1)
+		} else {
+			// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBuffer
+			err = buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer))
 		}
-		err := buf.Copy(clientReader, serverWriter, buf.UpdateActivity(timer))
 		if err != nil {
 			return errors.New("failed to transfer request payload").Base(err).AtInfo()
 		}
@@ -323,7 +261,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		// default: serverReader := buf.NewReader(conn)
 		serverReader := encoding.DecodeBodyAddons(conn, request, responseAddons)
 		if requestAddons.Flow == vless.XRV {
-			serverReader = proxy.NewVisionReader(serverReader, trafficState, false, ctx, conn, input, rawInput, ob)
+			serverReader = proxy.NewVisionReader(serverReader, trafficState, false, ctx)
 		}
 		if request.Command == protocol.RequestCommandMux && request.Port == 666 {
 			if requestAddons.Flow == vless.XRV {
@@ -334,7 +272,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		}
 
 		if requestAddons.Flow == vless.XRV {
-			err = encoding.XtlsRead(serverReader, clientWriter, timer, conn, trafficState, false, ctx)
+			err = encoding.XtlsRead(serverReader, clientWriter, timer, conn, input, rawInput, trafficState, ob, false, ctx)
 		} else {
 			// from serverReader.ReadMultiBuffer to clientWriter.WriteMultiBuffer
 			err = buf.Copy(serverReader, clientWriter, buf.UpdateActivity(timer))
@@ -357,67 +295,3 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 
 	return nil
 }
-
-type Reverse struct {
-	tag         string
-	dispatcher  routing.Dispatcher
-	ctx         context.Context
-	handler     *Handler
-	workers     []*reverse.BridgeWorker
-	monitorTask *task.Periodic
-}
-
-func (r *Reverse) monitor() error {
-	var activeWorkers []*reverse.BridgeWorker
-	for _, w := range r.workers {
-		if w.IsActive() {
-			activeWorkers = append(activeWorkers, w)
-		}
-	}
-	if len(activeWorkers) != len(r.workers) {
-		r.workers = activeWorkers
-	}
-
-	var numConnections uint32
-	var numWorker uint32
-	for _, w := range r.workers {
-		if w.IsActive() {
-			numConnections += w.Connections()
-			numWorker++
-		}
-	}
-	if numWorker == 0 || numConnections/numWorker > 16 {
-		reader1, writer1 := pipe.New(pipe.WithSizeLimit(2 * buf.Size))
-		reader2, writer2 := pipe.New(pipe.WithSizeLimit(2 * buf.Size))
-		link1 := &transport.Link{Reader: reader1, Writer: writer2}
-		link2 := &transport.Link{Reader: reader2, Writer: writer1}
-		w := &reverse.BridgeWorker{
-			Tag:        r.tag,
-			Dispatcher: r.dispatcher,
-		}
-		worker, err := mux.NewServerWorker(r.ctx, w, link1)
-		if err != nil {
-			errors.LogWarningInner(r.ctx, err, "failed to create mux server worker")
-			return nil
-		}
-		w.Worker = worker
-		r.workers = append(r.workers, w)
-		go func() {
-			ctx := session.ContextWithOutbounds(r.ctx, []*session.Outbound{{
-				Target: net.Destination{Address: net.DomainAddress("v1.rvs.cool")},
-			}})
-			r.handler.Process(ctx, link2, session.HandlerFromContext(ctx).(*proxyman.Handler))
-			common.Interrupt(reader1)
-			common.Interrupt(reader2)
-		}()
-	}
-	return nil
-}
-
-func (r *Reverse) Start() error {
-	return r.monitorTask.Start()
-}
-
-func (r *Reverse) Close() error {
-	return r.monitorTask.Close()
-}