v1.8.13

Wireguard dial with context
v1.8.12
2025-08-22 09:36:49 +08:00 · 2024-05-22 22:02:23 +00:00 · 2024-05-22 09:02:20 -04:00 · 2024-05-22 04:36:56 +00:00 · 2024-05-22 04:28:58 +00:00 · 2024-05-22 03:02:45 +00:00
181 changed files with 3069 additions and 1077 deletions
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -0,0 +1,87 @@
+name: Bug report
+description: "Submit Xray-core bug"
+body:
+  - type: checkboxes
+    attributes:
+      label: Integrity requirements
+      description: |-
+        Please check all of the following options to prove that you have read and understood the requirements, otherwise this issue will be closed.
+      options:
+        - label: I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
+          required: true
+        - label: I searched issues and did not find any similar issues.
+          required: true
+  - type: input
+    attributes:
+      label: Version
+      description: Version of Xray-core
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Description
+      description: Please provide a detailed description of the error. And the information you think valuable.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Reproduction Method
+      description: |-
+        Based on the configuration you provided below, provide the method to reproduce the bug.
+    validations:
+      required: true
+  - type: markdown
+    attributes:
+      value: |-
+        ## Configuration and Log Section
+        
+        ### For config
+        Please provide the configuration files that can reproduce the problem, including the server and client.
+        Don't just paste a big exported config file here. Eliminate useless inbound/outbound, rules, options, this can help determine the problem, if you really want to get help.
+
+        ### For logs
+        Please set the log level to debug first.
+        Restart Xray-core, then operate according to the reproduction method, try to reduce the irrelevant part in the log.
+        Remember to delete parts with personal information (such as UUID and IP).
+        Provide the log of Xray-core, not the log output by the panel or other things.
+
+        ### Finally
+        After removing parts that do not affect reproduction, provide the actual running **complete** file, do not only provide inbound or outbound or a few lines of logs based on your own judgment.
+        Put the content between the preset ```<details><pre><code>``` ```</code></pre></details>``` in the text box.
+        If the problem is very clear that only related to one end (such as core startup failure/crash after correctly writing the config according to the documents), N/A can be filled in for unnecessary areas below.
+  - type: textarea
+    attributes:
+      label: Client config
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Server config
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Client log
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Server log
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
--- a/.github/ISSUE_TEMPLATE/bug_report_zh.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report_zh.yml
@@ -0,0 +1,87 @@
+name: bug反馈
+description: "提交 Xray-core bug"
+body:
+  - type: checkboxes
+    attributes:
+      label: 完整性要求
+      description: |-
+        请勾选以下所有选项以证明您已经阅读并理解了以下要求，否则该 issue 将被关闭。
+      options:
+        - label: 我保证阅读了文档，了解所有我编写的配置文件项的含义，而不是大量堆砌看似有用的选项或默认值。
+          required: true
+        - label: 我搜索了issues，没有发现已提出的类似问题。
+          required: true
+  - type: input
+    attributes:
+      label: 版本
+      description: 使用的Xray-core版本
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 描述
+      description: 请提供错误的详细描述。以及你认为有价值的信息。
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 重现方式
+      description: |-
+        基于你下面提供的配置，提供重现BUG方法。
+    validations:
+      required: true
+  - type: markdown
+    attributes:
+      value: |-
+        ## 配置与日志部分
+        
+        ### 对于配置文件
+        请提供可以重现问题的配置文件，包括服务端和客户端。
+        不要直接在这里黏贴一大段导出的 config 文件。去掉无用的出入站、规则、选项，这可以帮助确定问题，如果你真的想得到帮助。
+        
+        ### 对于日志
+        请先将日志等级设置为 debug.
+        重启 Xray-core ，再按复现方式操作，尽量减少日志中的无关部分。
+        记得删除有关个人信息（如UUID与IP）的部分。
+        提供 Xray-core 的日志，而不是面板或者别的东西输出的日志。
+
+        ### 最后
+        在去掉不影响复现的部分后，提供实际运行的**完整**文件，不要出于自己的判断只提供入站出站或者几行日志。
+        把内容放在文本框预置的 ```<details><pre><code>``` 和 ```</code></pre></details>``` 中间。
+        如果问题十分明确只出现在某一端(如按文档正确编写配置后核心启动失败/崩溃)，可以在下面不需要的项目填入N/A.
+  - type: textarea
+    attributes:
+      label: 客户端配置
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 服务端配置
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 客户端日志
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 服务端日志
+      value: |-
+        <details><pre><code>
+
+        </code></pre></details>
+    validations:
+      required: true
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,5 +1,11 @@
 name: Build and Release

+# NOTE: This Github Actions file depends on the Makefile.
+#       Building the correct package requires the correct binaries generated by the Makefile. To 
+#       ensure the correct output, the Makefile must accept the appropriate input and compile the 
+#       correct file with the correct name. If you need to modify this file, please ensure it won't 
+#       disrupt the Makefile.
+
 on:
  workflow_dispatch:
  release:
--- a/13
+++ b/13
@@ -2,6 +2,17 @@ NAME = xray

 VERSION=$(shell git describe --always --dirty)

+# NOTE: This MAKEFILE can be used to build Xray-core locally and in Automatic workflows. It is \
+	provided for convinience in automatic building and functions as a part of it.
+# NOTE: If you need to modify this file, please be aware that:\
+	- This file is not the main Makefile; it only accepts environment variables and builds the \
+	binary.\
+	- Automatic building expects the correct binaries to be built by this Makefile. If you \
+	intend to propose a change to this Makefile, carefully review the file below and ensure \
+	that the change will not accidently break the automatic building:\
+		.github/workflows/release.yml \
+	Otherwise it is recommended to contact the project maintainers.
+
 LDFLAGS = -X github.com/xtls/xray-core/core.build=$(VERSION) -s -w -buildid=
 PARAMS = -trimpath -ldflags "$(LDFLAGS)" -v
 MAIN = ./main
@@ -26,4 +37,4 @@ install:

 clean:
 	go clean -v -i $(PWD)
-	rm -f xray xray.exe wxray.exe xray_softfloat
+	rm -f xray xray.exe wxray.exe xray_softfloat
--- a/README.md
+++ b/README.md
@@ -21,10 +21,10 @@
 ## Installation

 - Linux Script
-  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install)
+  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install) (**Official**)
+  - [tempest](https://github.com/team-cloudchaser/tempest) (supports [`systemd`](https://systemd.io) and [OpenRC](https://github.com/OpenRC/openrc); Linux-only)
 - Docker
-  - Official: [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) 
-  - [iamybj/docker-xray](https://hub.docker.com/r/iamybj/docker-xray)
+  - [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) (**Official**)
  - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
 - Web Panel
  - [X-UI-English](https://github.com/NidukaAkalanka/x-ui-english), [3X-UI](https://github.com/MHSanaei/3x-ui), [X-UI](https://github.com/alireza0/x-ui), [X-UI](https://github.com/diditra/x-ui)
@@ -76,7 +76,6 @@
  - [HiddifyNG](https://github.com/hiddify/HiddifyNG)
  - [X-flutter](https://github.com/XTLS/X-flutter)
 - iOS & macOS arm64
-  - [Mango](https://github.com/arror/Mango)
  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
  - [Streisand](https://apps.apple.com/app/streisand/id6450534064)
 - macOS arm64 & x64
@@ -101,6 +100,7 @@
  - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
  - [XrayKit](https://github.com/arror/XrayKit)
  - [Xray-core-python](https://github.com/LorenEteval/Xray-core-python)
+  - [xray-api](https://github.com/XVGuardian/xray-api)
 - [XrayR](https://github.com/XrayR-project/XrayR)
  - [XrayR-release](https://github.com/XrayR-project/XrayR-release)
  - [XrayR-V2Board](https://github.com/missuo/XrayR-V2Board)
--- a/app/commander/commander.go
+++ b/app/commander/commander.go
@@ -21,12 +21,14 @@ type Commander struct {
 	services []Service
 	ohm      outbound.Manager
 	tag      string
+	listen   string
 }

 // NewCommander creates a new Commander based on the given config.
 func NewCommander(ctx context.Context, config *Config) (*Commander, error) {
 	c := &Commander{
-		tag: config.Tag,
+		tag:    config.Tag,
+		listen: config.Listen,
 	}

 	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager) {
@@ -66,16 +68,29 @@ func (c *Commander) Start() error {
 	}
 	c.Unlock()

+	var listen = func(listener net.Listener) {
+		if err := c.server.Serve(listener); err != nil {
+			newError("failed to start grpc server").Base(err).AtError().WriteToLog()
+		}
+	}
+
+	if len(c.listen) > 0 {
+		if l, err := net.Listen("tcp", c.listen); err != nil {
+			newError("API server failed to listen on ", c.listen).Base(err).AtError().WriteToLog()
+			return err
+		} else {
+			newError("API server listening on ", l.Addr()).AtInfo().WriteToLog()
+			go listen(l)
+		}
+		return nil
+	}
+
 	listener := &OutboundListener{
 		buffer: make(chan net.Conn, 4),
 		done:   done.New(),
 	}

-	go func() {
-		if err := c.server.Serve(listener); err != nil {
-			newError("failed to start grpc server").Base(err).AtError().WriteToLog()
-		}
-	}()
+	go listen(listener)

 	if err := c.ohm.RemoveHandler(context.Background(), c.tag); err != nil {
 		newError("failed to remove existing handler").WriteToLog()
--- a/app/commander/config.pb.go
+++ b/app/commander/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.28.1
+// 	protoc        v4.25.3
 // source: app/commander/config.proto

 package commander
@@ -29,6 +29,8 @@ type Config struct {

 	// Tag of the outbound handler that handles grpc connections.
 	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	// Network address of commander grpc service.
+	Listen string `protobuf:"bytes,3,opt,name=listen,proto3" json:"listen,omitempty"`
 	// Services that supported by this server. All services must implement Service
 	// interface.
 	Service []*serial.TypedMessage `protobuf:"bytes,2,rep,name=service,proto3" json:"service,omitempty"`
@@ -73,6 +75,13 @@ func (x *Config) GetTag() string {
 	return ""
 }

+func (x *Config) GetListen() string {
+	if x != nil {
+		return x.Listen
+	}
+	return ""
+}
+
 func (x *Config) GetService() []*serial.TypedMessage {
 	if x != nil {
 		return x.Service
@@ -127,20 +136,21 @@ var file_app_commander_config_proto_rawDesc = []byte{
 	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72,
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+	0x70, 0x70, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58,
+	0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
+	0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/app/commander/config.proto
+++ b/app/commander/config.proto
@@ -12,6 +12,10 @@ import "common/serial/typed_message.proto";
 message Config {
  // Tag of the outbound handler that handles grpc connections.
  string tag = 1;
+
+  // Network address of commander grpc service.
+  string listen = 3;
+
  // Services that supported by this server. All services must implement Service
  // interface.
  repeated xray.common.serial.TypedMessage service = 2;
--- a/app/dispatcher/config.pb.go
+++ b/app/dispatcher/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/dispatcher/config.proto

--- a/app/dispatcher/default.go
+++ b/app/dispatcher/default.go
@@ -218,11 +218,12 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	if !destination.IsValid() {
 		panic("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
-	if ob == nil {
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
+	outbounds := session.OutboundsFromContext(ctx)
+	if len(outbounds) == 0 {
+		outbounds = []*session.Outbound{{}}
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
+	ob := outbounds[len(outbounds) - 1]
 	ob.OriginalTarget = destination
 	ob.Target = destination
 	content := session.ContentFromContext(ctx)
@@ -274,11 +275,12 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 	if !destination.IsValid() {
 		return newError("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
-	if ob == nil {
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
+	outbounds := session.OutboundsFromContext(ctx)
+	if len(outbounds) == 0 {
+		outbounds = []*session.Outbound{{}}
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
+	ob := outbounds[len(outbounds) - 1]
 	ob.OriginalTarget = destination
 	ob.Target = destination
 	content := session.ContentFromContext(ctx)
@@ -368,7 +370,8 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 	return contentResult, contentErr
 }
 func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.Link, destination net.Destination) {
-	ob := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
 	if hosts, ok := d.dns.(dns.HostsLookup); ok && destination.Address.Family().IsDomain() {
 		proxied := hosts.LookupHosts(ob.Target.String())
 		if proxied != nil {
@@ -425,6 +428,7 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 		return
 	}

+	ob.Tag = handler.Tag()
 	if accessMessage := log.AccessMessageFromContext(ctx); accessMessage != nil {
 		if tag := handler.Tag(); tag != "" {
 			if inTag == "" {
--- a/app/dispatcher/fakednssniffer.go
+++ b/app/dispatcher/fakednssniffer.go
@@ -26,11 +26,12 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 		return protocolSnifferWithMetadata{}, errNotInit
 	}
 	return protocolSnifferWithMetadata{protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
-		Target := session.OutboundFromContext(ctx).Target
-		if Target.Network == net.Network_TCP || Target.Network == net.Network_UDP {
-			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(Target.Address)
+		outbounds := session.OutboundsFromContext(ctx)
+		ob := outbounds[len(outbounds) - 1]
+		if ob.Target.Network == net.Network_TCP || ob.Target.Network == net.Network_UDP {
+			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(ob.Target.Address)
 			if domainFromFakeDNS != "" {
-				newError("fake dns got domain: ", domainFromFakeDNS, " for ip: ", Target.Address.String()).WriteToLog(session.ExportIDToError(ctx))
+				newError("fake dns got domain: ", domainFromFakeDNS, " for ip: ", ob.Target.Address.String()).WriteToLog(session.ExportIDToError(ctx))
 				return &fakeDNSSniffResult{domainName: domainFromFakeDNS}, nil
 			}
 		}
@@ -38,7 +39,7 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 		if ipAddressInRangeValueI := ctx.Value(ipAddressInRange); ipAddressInRangeValueI != nil {
 			ipAddressInRangeValue := ipAddressInRangeValueI.(*ipAddressInRangeOpt)
 			if fkr0, ok := fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
-				inPool := fkr0.IsIPInIPPool(Target.Address)
+				inPool := fkr0.IsIPInIPPool(ob.Target.Address)
 				ipAddressInRangeValue.addressInRange = &inPool
 			}
 		}
--- a/app/dns/config.pb.go
+++ b/app/dns/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/dns/config.proto

--- a/app/dns/dns.go
+++ b/app/dns/dns.go
@@ -181,9 +181,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 	}

 	// Normalize the FQDN form query
-	if strings.HasSuffix(domain, ".") {
-		domain = domain[:len(domain)-1]
-	}
+	domain = strings.TrimSuffix(domain, ".")

 	// Static host lookup
 	switch addrs := s.hosts.Lookup(domain, option); {
--- a/app/dns/fakedns/fakedns.pb.go
+++ b/app/dns/fakedns/fakedns.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/dns/fakedns/fakedns.proto

--- a/app/dns/nameserver_quic.go
+++ b/app/dns/nameserver_quic.go
@@ -1,7 +1,9 @@
 package dns

 import (
+	"bytes"
 	"context"
+	"encoding/binary"
 	"net/url"
 	"sync"
 	"sync/atomic"
@@ -24,7 +26,7 @@ import (

 // NextProtoDQ - During connection establishment, DNS/QUIC support is indicated
 // by selecting the ALPN token "dq" in the crypto handshake.
-const NextProtoDQ = "doq-i00"
+const NextProtoDQ = "doq"

 const handshakeTimeout = time.Second * 8

@@ -46,7 +48,7 @@ func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServ
 	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()

 	var err error
-	port := net.Port(784)
+	port := net.Port(853)
 	if url.Port() != "" {
 		port, err = net.PortFromString(url.Port())
 		if err != nil {
@@ -194,13 +196,18 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 				return
 			}

+			dnsReqBuf := buf.New()
+			binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
+			dnsReqBuf.Write(b.Bytes())
+			b.Release()
+
 			conn, err := s.openStream(dnsCtx)
 			if err != nil {
 				newError("failed to open quic connection").Base(err).AtError().WriteToLog()
 				return
 			}

-			_, err = conn.Write(b.Bytes())
+			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
 				newError("failed to send query").Base(err).AtError().WriteToLog()
 				return
@@ -210,9 +217,21 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP

 			respBuf := buf.New()
 			defer respBuf.Release()
-			n, err := respBuf.ReadFrom(conn)
+			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
-				newError("failed to read response").Base(err).AtError().WriteToLog()
+				newError("failed to read response length").Base(err).AtError().WriteToLog()
+				return
+			}
+			var length int16
+			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
+			if err != nil {
+				newError("failed to parse response length").Base(err).AtError().WriteToLog()
+				return
+			}
+			respBuf.Clear()
+			n, err = respBuf.ReadFullFrom(conn, int32(length))
+			if err != nil && n == 0 {
+				newError("failed to read response length").Base(err).AtError().WriteToLog()
 				return
 			}

--- a/app/log/command/config.pb.go
+++ b/app/log/command/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/log/command/config.proto

--- a/app/log/config.pb.go
+++ b/app/log/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/log/config.proto

--- a/app/metrics/config.pb.go
+++ b/app/metrics/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/metrics/config.proto

--- a/app/observatory/burst/config.pb.go
+++ b/app/observatory/burst/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/observatory/burst/config.proto

--- a/app/observatory/burst/healthping.go
+++ b/app/observatory/burst/healthping.go
@@ -79,6 +79,15 @@ func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
 	tickerClose := make(chan struct{})
 	h.ticker = ticker
 	h.tickerClose = tickerClose
+	go func() {
+		tags, err := selector()
+		if err != nil {
+			newError("error select outbounds for initial health check: ", err).AtWarning().WriteToLog()
+			return
+		}
+		h.Check(tags)
+	}()
+
 	go func() {
 		for {
 			go func() {
--- a/app/observatory/command/command.pb.go
+++ b/app/observatory/command/command.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/observatory/command/command.proto

--- a/app/observatory/config.pb.go
+++ b/app/observatory/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/observatory/config.proto

--- a/app/policy/config.pb.go
+++ b/app/policy/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/policy/config.proto

--- a/app/proxyman/command/command.pb.go
+++ b/app/proxyman/command/command.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/proxyman/command/command.proto

--- a/app/proxyman/config.pb.go
+++ b/app/proxyman/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/proxyman/config.proto

@@ -524,6 +524,7 @@ type SenderConfig struct {
 	StreamSettings    *internet.StreamConfig `protobuf:"bytes,2,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
 	ProxySettings     *internet.ProxyConfig  `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
 	MultiplexSettings *MultiplexingConfig    `protobuf:"bytes,4,opt,name=multiplex_settings,json=multiplexSettings,proto3" json:"multiplex_settings,omitempty"`
+	ViaCidr           string                 `protobuf:"bytes,5,opt,name=via_cidr,json=viaCidr,proto3" json:"via_cidr,omitempty"`
 }

 func (x *SenderConfig) Reset() {
@@ -586,6 +587,13 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }

+func (x *SenderConfig) GetViaCidr() string {
+	if x != nil {
+		return x.ViaCidr
+	}
+	return ""
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -855,7 +863,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65,
 	0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x53,
 	0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x22, 0x10, 0x0a, 0x0e, 0x4f, 0x75, 0x74, 0x62, 0x6f,
-	0x75, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xb0, 0x02, 0x0a, 0x0c, 0x53, 0x65,
+	0x75, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xcb, 0x02, 0x0a, 0x0c, 0x53, 0x65,
 	0x6e, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x2d, 0x0a, 0x03, 0x76, 0x69,
 	0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63,
 	0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f,
@@ -874,26 +882,28 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72,
 	0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78,
 	0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x11, 0x6d, 0x75, 0x6c, 0x74, 0x69,
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-	0x12, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e,
-	0x66, 0x69, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x18, 0x01,
-	0x20, 0x01, 0x28, 0x08, 0x52, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x20, 0x0a,
-	0x0b, 0x63, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18, 0x02, 0x20, 0x01,
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-	0x63, 0x79, 0x18, 0x03, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0f, 0x78, 0x75, 0x64, 0x70, 0x43, 0x6f,
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-	0x70, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x55, 0x44, 0x50, 0x34, 0x34, 0x33, 0x18, 0x04, 0x20, 0x01,
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-	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x70, 0x6c, 0x65, 0x78, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x19, 0x0a, 0x08,
+	0x76, 0x69, 0x61, 0x5f, 0x63, 0x69, 0x64, 0x72, 0x18, 0x05, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07,
+	0x76, 0x69, 0x61, 0x43, 0x69, 0x64, 0x72, 0x22, 0xa4, 0x01, 0x0a, 0x12, 0x4d, 0x75, 0x6c, 0x74,
+	0x69, 0x70, 0x6c, 0x65, 0x78, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18,
+	0x0a, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08, 0x52,
+	0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x20, 0x0a, 0x0b, 0x63, 0x6f, 0x6e, 0x63,
+	0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0b, 0x63,
+	0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x12, 0x28, 0x0a, 0x0f, 0x78, 0x75,
+	0x64, 0x70, 0x43, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18, 0x03, 0x20,
+	0x01, 0x28, 0x05, 0x52, 0x0f, 0x78, 0x75, 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, 0x79, 0x55, 0x44, 0x50, 0x34, 0x34, 0x33, 0x2a, 0x23,
+	0x0a, 0x0e, 0x4b, 0x6e, 0x6f, 0x77, 0x6e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x73,
+	0x12, 0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x00, 0x12, 0x07, 0x0a, 0x03, 0x54, 0x4c,
+	0x53, 0x10, 0x01, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
+	0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x50, 0x01, 0x5a, 0x26,
+	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, 0x61, 0x70, 0x70, 0x2f, 0x70, 0x72,
+	0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0xaa, 0x02, 0x11, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70,
+	0x70, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }

 var (
--- a/app/proxyman/config.proto
+++ b/app/proxyman/config.proto
@@ -91,6 +91,7 @@ message SenderConfig {
  xray.transport.internet.StreamConfig stream_settings = 2;
  xray.transport.internet.ProxyConfig proxy_settings = 3;
  MultiplexingConfig multiplex_settings = 4;
+  string via_cidr = 5;
 }

 message MultiplexingConfig {
--- a/app/proxyman/inbound/worker.go
+++ b/app/proxyman/inbound/worker.go
@@ -60,7 +60,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	sid := session.NewID()
 	ctx = session.ContextWithID(ctx, sid)

-	var outbound = &session.Outbound{}
+	outbounds := []*session.Outbound{{}}
 	if w.recvOrigDest {
 		var dest net.Destination
 		switch getTProxyType(w.stream) {
@@ -75,10 +75,10 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
 		if dest.IsValid() {
-			outbound.Target = dest
+			outbounds[0].Target = dest
 		}
 	}
-	ctx = session.ContextWithOutbound(ctx, outbound)
+	ctx = session.ContextWithOutbounds(ctx, outbounds)

 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -309,9 +309,10 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 			ctx = session.ContextWithID(ctx, sid)

 			if originalDest.IsValid() {
-				ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+				outbounds := []*session.Outbound{{
 					Target: originalDest,
-				})
+				}}
+				ctx = session.ContextWithOutbounds(ctx, outbounds)
 			}
 			ctx = session.ContextWithInbound(ctx, &session.Inbound{
 				Source:  source,
--- a/app/proxyman/outbound/handler.go
+++ b/app/proxyman/outbound/handler.go
@@ -2,10 +2,8 @@ package outbound

 import (
 	"context"
+	"crypto/rand"
 	"errors"
-	"io"
-	"os"
-
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
@@ -23,6 +21,10 @@ import (
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"github.com/xtls/xray-core/transport/pipe"
+	"io"
+	"math/big"
+	gonet "net"
+	"os"
 )

 func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
@@ -167,10 +169,11 @@ func (h *Handler) Tag() string {

 // Dispatch implements proxy.Outbound.Dispatch.
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound.Target.Network == net.Network_UDP && outbound.OriginalTarget.Address != nil && outbound.OriginalTarget.Address != outbound.Target.Address {
-		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
-		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	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}
 	}
 	if h.mux != nil {
 		test := func(err error) {
@@ -181,7 +184,7 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 				common.Interrupt(link.Writer)
 			}
 		}
-		if outbound.Target.Network == net.Network_UDP && outbound.Target.Port == 443 {
+		if ob.Target.Network == net.Network_UDP && ob.Target.Port == 443 {
 			switch h.udp443 {
 			case "reject":
 				test(newError("XUDP rejected UDP/443 traffic").AtInfo())
@@ -190,7 +193,7 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 				goto out
 			}
 		}
-		if h.xudp != nil && outbound.Target.Network == net.Network_UDP {
+		if h.xudp != nil && ob.Target.Network == net.Network_UDP {
 			if !h.xudp.Enabled {
 				goto out
 			}
@@ -241,10 +244,11 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 			handler := h.outboundManager.GetHandler(tag)
 			if handler != nil {
 				newError("proxying to ", tag, " for dest ", dest).AtDebug().WriteToLog(session.ExportIDToError(ctx))
-				ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+				outbounds := session.OutboundsFromContext(ctx)
+				ctx = session.ContextWithOutbounds(ctx, append(outbounds, &session.Outbound{
 					Target: dest,
-				})
-
+					Tag: tag,
+				})) // add another outbound in session ctx
 				opts := pipe.OptionsFromContext(ctx)
 				uplinkReader, uplinkWriter := pipe.New(opts...)
 				downlinkReader, downlinkWriter := pipe.New(opts...)
@@ -264,12 +268,13 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 		}

 		if h.senderSettings.Via != nil {
-			outbound := session.OutboundFromContext(ctx)
-			if outbound == nil {
-				outbound = new(session.Outbound)
-				ctx = session.ContextWithOutbound(ctx, outbound)
+			outbounds := session.OutboundsFromContext(ctx)
+			ob := outbounds[len(outbounds) - 1]
+			if h.senderSettings.ViaCidr == "" {
+				ob.Gateway = h.senderSettings.Via.AsAddress()
+			} else { //Get a random address.
+				ob.Gateway = ParseRandomIPv6(h.senderSettings.Via.AsAddress(), h.senderSettings.ViaCidr)
 			}
-			outbound.Gateway = h.senderSettings.Via.AsAddress()
 		}
 	}

@@ -279,10 +284,9 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti

 	conn, err := internet.Dial(ctx, dest, h.streamSettings)
 	conn = h.getStatCouterConnection(conn)
-	outbound := session.OutboundFromContext(ctx)
-	if outbound != nil {
-		outbound.Conn = conn
-	}
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	ob.Conn = conn
 	return conn, err
 }

@@ -312,3 +316,22 @@ func (h *Handler) Close() error {
 	common.Close(h.mux)
 	return nil
 }
+
+
+func ParseRandomIPv6(address net.Address, prefix string) net.Address {
+	_, network, _ := gonet.ParseCIDR(address.IP().String() + "/" + prefix)
+
+	maskSize, totalBits := network.Mask.Size()
+	subnetSize := big.NewInt(1).Lsh(big.NewInt(1), uint(totalBits-maskSize))
+
+	// random
+	randomBigInt, _ := rand.Int(rand.Reader, subnetSize)
+
+	startIPBigInt := big.NewInt(0).SetBytes(network.IP.To16())
+	randomIPBigInt := big.NewInt(0).Add(startIPBigInt, randomBigInt)
+
+	randomIPBytes := randomIPBigInt.Bytes()
+	randomIPBytes = append(make([]byte, 16-len(randomIPBytes)), randomIPBytes...)
+
+	return net.ParseAddress(gonet.IP(randomIPBytes).String())
+}
--- a/app/proxyman/outbound/handler_test.go
+++ b/app/proxyman/outbound/handler_test.go
@@ -14,6 +14,7 @@ import (
 	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/session"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/proxy/freedom"
@@ -44,6 +45,7 @@ func TestOutboundWithoutStatCounter(t *testing.T) {
 	v, _ := core.New(config)
 	v.AddFeature((outbound.Manager)(new(Manager)))
 	ctx := context.WithValue(context.Background(), xrayKey, v)
+	ctx = session.ContextWithOutbounds(ctx, []*session.Outbound{{}})
 	h, _ := NewHandler(ctx, &core.OutboundHandlerConfig{
 		Tag:           "tag",
 		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
@@ -73,6 +75,7 @@ func TestOutboundWithStatCounter(t *testing.T) {
 	v, _ := core.New(config)
 	v.AddFeature((outbound.Manager)(new(Manager)))
 	ctx := context.WithValue(context.Background(), xrayKey, v)
+	ctx = session.ContextWithOutbounds(ctx, []*session.Outbound{{}})
 	h, _ := NewHandler(ctx, &core.OutboundHandlerConfig{
 		Tag:           "tag",
 		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
--- a/app/reverse/config.pb.go
+++ b/app/reverse/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/reverse/config.proto

--- a/app/reverse/portal.go
+++ b/app/reverse/portal.go
@@ -62,12 +62,13 @@ func (p *Portal) Close() error {
 }

 func (p *Portal) HandleConnection(ctx context.Context, link *transport.Link) error {
-	outboundMeta := session.OutboundFromContext(ctx)
-	if outboundMeta == nil {
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	if ob == nil {
 		return newError("outbound metadata not found").AtError()
 	}

-	if isDomain(outboundMeta.Target, p.domain) {
+	if isDomain(ob.Target, p.domain) {
 		muxClient, err := mux.NewClientWorker(*link, mux.ClientStrategy{})
 		if err != nil {
 			return newError("failed to create mux client worker").Base(err).AtWarning()
@@ -206,9 +207,10 @@ func NewPortalWorker(client *mux.ClientWorker) (*PortalWorker, error) {
 	downlinkReader, downlinkWriter := pipe.New(opt...)

 	ctx := context.Background()
-	ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+	outbounds := []*session.Outbound{{
 		Target: net.UDPDestination(net.DomainAddress(internalDomain), 0),
-	})
+	}}
+	ctx = session.ContextWithOutbounds(ctx, outbounds)
 	f := client.Dispatch(ctx, &transport.Link{
 		Reader: uplinkReader,
 		Writer: downlinkWriter,
--- a/app/router/balancing.go
+++ b/app/router/balancing.go
@@ -4,6 +4,9 @@ import (
 	"context"
 	sync "sync"

+	"github.com/xtls/xray-core/app/observatory"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 )
@@ -17,14 +20,58 @@ type BalancingPrincipleTarget interface {
 }

 type RoundRobinStrategy struct {
+	FallbackTag string
+
+	ctx         context.Context
+	observatory extension.Observatory
 	mu    sync.Mutex
 	index int
 }

+func (s *RoundRobinStrategy) InjectContext(ctx context.Context) {
+	s.ctx = ctx
+}
+
+func (s *RoundRobinStrategy) GetPrincipleTarget(strings []string) []string {
+	return strings
+}
+
 func (s *RoundRobinStrategy) PickOutbound(tags []string) string {
+	if len(s.FallbackTag) > 0 && s.observatory == nil {
+		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+			s.observatory = observatory
+			return nil
+		}))
+	}
+	if s.observatory != nil {
+		observeReport, err := s.observatory.GetObservation(s.ctx)
+		if err == nil {
+			aliveTags := make([]string, 0)
+			if result, ok := observeReport.(*observatory.ObservationResult); ok {
+				status := result.Status
+				statusMap := make(map[string]*observatory.OutboundStatus)
+				for _, outboundStatus := range status {
+					statusMap[outboundStatus.OutboundTag] = outboundStatus
+				}
+				for _, candidate := range tags {
+					if outboundStatus, found := statusMap[candidate]; found {
+						if outboundStatus.Alive {
+							aliveTags = append(aliveTags, candidate)
+						}
+					} else {
+						// unfound candidate is considered alive
+						aliveTags = append(aliveTags, candidate)
+					}
+				}
+				tags = aliveTags
+			}
+		}
+	}
+
 	n := len(tags)
 	if n == 0 {
-		panic("0 tags")
+		// goes to fallbackTag
+		return ""
 	}

 	s.mu.Lock()
--- a/app/router/command/command.go
+++ b/app/router/command/command.go
@@ -54,6 +54,20 @@ func (s *routingServer) OverrideBalancerTarget(ctx context.Context, request *Ove
 	return nil, newError("unsupported router implementation")
 }

+func (s *routingServer) AddRule(ctx context.Context, request *AddRuleRequest) (*AddRuleResponse, error) {
+	if bo, ok := s.router.(routing.Router); ok {
+		return &AddRuleResponse{}, bo.AddRule(request.Config, request.ShouldAppend)
+	}
+	return nil, newError("unsupported router implementation")
+
+}
+func (s *routingServer) RemoveRule(ctx context.Context, request *RemoveRuleRequest) (*RemoveRuleResponse, error) {
+	if bo, ok := s.router.(routing.Router); ok {
+		return &RemoveRuleResponse{}, bo.RemoveRule(request.RuleTag)
+	}
+	return nil, newError("unsupported router implementation")
+}
+
 // NewRoutingServer creates a statistics service with statistics manager.
 func NewRoutingServer(router routing.Router, routingStats stats.Channel) RoutingServiceServer {
 	return &routingServer{
--- a/app/router/command/command.pb.go
+++ b/app/router/command/command.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/router/command/command.proto

@@ -8,6 +8,7 @@ package command

 import (
 	net "github.com/xtls/xray-core/common/net"
+	serial "github.com/xtls/xray-core/common/serial"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -630,6 +631,184 @@ func (*OverrideBalancerTargetResponse) Descriptor() ([]byte, []int) {
 	return file_app_router_command_command_proto_rawDescGZIP(), []int{9}
 }

+type AddRuleRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Config       *serial.TypedMessage `protobuf:"bytes,1,opt,name=config,proto3" json:"config,omitempty"`
+	ShouldAppend bool                 `protobuf:"varint,2,opt,name=shouldAppend,proto3" json:"shouldAppend,omitempty"`
+}
+
+func (x *AddRuleRequest) Reset() {
+	*x = AddRuleRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_router_command_command_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AddRuleRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AddRuleRequest) ProtoMessage() {}
+
+func (x *AddRuleRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_app_router_command_command_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AddRuleRequest.ProtoReflect.Descriptor instead.
+func (*AddRuleRequest) Descriptor() ([]byte, []int) {
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *AddRuleRequest) GetConfig() *serial.TypedMessage {
+	if x != nil {
+		return x.Config
+	}
+	return nil
+}
+
+func (x *AddRuleRequest) GetShouldAppend() bool {
+	if x != nil {
+		return x.ShouldAppend
+	}
+	return false
+}
+
+type AddRuleResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *AddRuleResponse) Reset() {
+	*x = AddRuleResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_router_command_command_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AddRuleResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AddRuleResponse) ProtoMessage() {}
+
+func (x *AddRuleResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_app_router_command_command_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AddRuleResponse.ProtoReflect.Descriptor instead.
+func (*AddRuleResponse) Descriptor() ([]byte, []int) {
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{11}
+}
+
+type RemoveRuleRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	RuleTag string `protobuf:"bytes,1,opt,name=ruleTag,proto3" json:"ruleTag,omitempty"`
+}
+
+func (x *RemoveRuleRequest) Reset() {
+	*x = RemoveRuleRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_router_command_command_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RemoveRuleRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RemoveRuleRequest) ProtoMessage() {}
+
+func (x *RemoveRuleRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_app_router_command_command_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RemoveRuleRequest.ProtoReflect.Descriptor instead.
+func (*RemoveRuleRequest) Descriptor() ([]byte, []int) {
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *RemoveRuleRequest) GetRuleTag() string {
+	if x != nil {
+		return x.RuleTag
+	}
+	return ""
+}
+
+type RemoveRuleResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *RemoveRuleResponse) Reset() {
+	*x = RemoveRuleResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_router_command_command_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RemoveRuleResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RemoveRuleResponse) ProtoMessage() {}
+
+func (x *RemoveRuleResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_app_router_command_command_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RemoveRuleResponse.ProtoReflect.Descriptor instead.
+func (*RemoveRuleResponse) Descriptor() ([]byte, []int) {
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{13}
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -639,7 +818,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[10]
+		mi := &file_app_router_command_command_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -652,7 +831,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}

 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[10]
+	mi := &file_app_router_command_command_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -665,7 +844,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {

 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{10}
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{14}
 }

 var File_app_router_command_command_proto protoreflect.FileDescriptor
@@ -676,128 +855,155 @@ var file_app_router_command_command_proto_rawDesc = []byte{
 	0x74, 0x6f, 0x12, 0x17, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75,
 	0x74, 0x65, 0x72, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x1a, 0x18, 0x63, 0x6f, 0x6d,
 	0x6d, 0x6f, 0x6e, 0x2f, 0x6e, 0x65, 0x74, 0x2f, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x2e,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x9c, 0x04, 0x0a, 0x0e, 0x52, 0x6f, 0x75, 0x74, 0x69, 0x6e,
-	0x67, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x78, 0x74, 0x12, 0x1e, 0x0a, 0x0a, 0x49, 0x6e, 0x62, 0x6f,
-	0x75, 0x6e, 0x64, 0x54, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x49, 0x6e,
-	0x62, 0x6f, 0x75, 0x6e, 0x64, 0x54, 0x61, 0x67, 0x12, 0x32, 0x0a, 0x07, 0x4e, 0x65, 0x74, 0x77,
-	0x6f, 0x72, 0x6b, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x18, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x4e, 0x65, 0x74, 0x77,
-	0x6f, 0x72, 0x6b, 0x52, 0x07, 0x4e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x12, 0x1c, 0x0a, 0x09,
-	0x53, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x49, 0x50, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0c, 0x52,
-	0x09, 0x53, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x49, 0x50, 0x73, 0x12, 0x1c, 0x0a, 0x09, 0x54, 0x61,
-	0x72, 0x67, 0x65, 0x74, 0x49, 0x50, 0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0c, 0x52, 0x09, 0x54,
-	0x61, 0x72, 0x67, 0x65, 0x74, 0x49, 0x50, 0x73, 0x12, 0x1e, 0x0a, 0x0a, 0x53, 0x6f, 0x75, 0x72,
-	0x63, 0x65, 0x50, 0x6f, 0x72, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0a, 0x53, 0x6f,
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-	0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x4f, 0x76,
-	0x65, 0x72, 0x72, 0x69, 0x64, 0x65, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x65, 0x72, 0x54, 0x61,
-	0x72, 0x67, 0x65, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x37, 0x2e, 0x78, 0x72,
+	0x41, 0x64, 0x64, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22,
+	0x00, 0x12, 0x67, 0x0a, 0x0a, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65, 0x52, 0x75, 0x6c, 0x65, 0x12,
+	0x2a, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65,
+	0x72, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65,
+	0x52, 0x75, 0x6c, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x2b, 0x2e, 0x78, 0x72,
 	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x63, 0x6f,
-	0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x4f, 0x76, 0x65, 0x72, 0x72, 0x69, 0x64, 0x65, 0x42, 0x61,
-	0x6c, 0x61, 0x6e, 0x63, 0x65, 0x72, 0x54, 0x61, 0x72, 0x67, 0x65, 0x74, 0x52, 0x65, 0x73, 0x70,
-	0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x67, 0x0a, 0x1b, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x63, 0x6f,
-	0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x2c, 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, 0x61, 0x70, 0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2f, 0x63, 0x6f,
-	0x6d, 0x6d, 0x61, 0x6e, 0x64, 0xaa, 0x02, 0x17, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70,
-	0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x62,
-	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x2e, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65, 0x52, 0x75, 0x6c, 0x65,
+	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x67, 0x0a, 0x1b, 0x63, 0x6f,
+	0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65,
+	0x72, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x50, 0x01, 0x5a, 0x2c, 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, 0x61, 0x70, 0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65,
+	0x72, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0xaa, 0x02, 0x17, 0x58, 0x72, 0x61, 0x79,
+	0x2e, 0x41, 0x70, 0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x43, 0x6f, 0x6d, 0x6d,
+	0x61, 0x6e, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -812,7 +1018,7 @@ func file_app_router_command_command_proto_rawDescGZIP() []byte {
 	return file_app_router_command_command_proto_rawDescData
 }

-var file_app_router_command_command_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_app_router_command_command_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_app_router_command_command_proto_goTypes = []interface{}{
 	(*RoutingContext)(nil),                 // 0: xray.app.router.command.RoutingContext
 	(*SubscribeRoutingStatsRequest)(nil),   // 1: xray.app.router.command.SubscribeRoutingStatsRequest
@@ -824,30 +1030,40 @@ var file_app_router_command_command_proto_goTypes = []interface{}{
 	(*GetBalancerInfoResponse)(nil),        // 7: xray.app.router.command.GetBalancerInfoResponse
 	(*OverrideBalancerTargetRequest)(nil),  // 8: xray.app.router.command.OverrideBalancerTargetRequest
 	(*OverrideBalancerTargetResponse)(nil), // 9: xray.app.router.command.OverrideBalancerTargetResponse
-	(*Config)(nil),                         // 10: xray.app.router.command.Config
-	nil,                                    // 11: xray.app.router.command.RoutingContext.AttributesEntry
-	(net.Network)(0),                       // 12: xray.common.net.Network
+	(*AddRuleRequest)(nil),                 // 10: xray.app.router.command.AddRuleRequest
+	(*AddRuleResponse)(nil),                // 11: xray.app.router.command.AddRuleResponse
+	(*RemoveRuleRequest)(nil),              // 12: xray.app.router.command.RemoveRuleRequest
+	(*RemoveRuleResponse)(nil),             // 13: xray.app.router.command.RemoveRuleResponse
+	(*Config)(nil),                         // 14: xray.app.router.command.Config
+	nil,                                    // 15: xray.app.router.command.RoutingContext.AttributesEntry
+	(net.Network)(0),                       // 16: xray.common.net.Network
+	(*serial.TypedMessage)(nil),            // 17: xray.common.serial.TypedMessage
 }
 var file_app_router_command_command_proto_depIdxs = []int32{
-	12, // 0: xray.app.router.command.RoutingContext.Network:type_name -> xray.common.net.Network
-	11, // 1: xray.app.router.command.RoutingContext.Attributes:type_name -> xray.app.router.command.RoutingContext.AttributesEntry
+	16, // 0: xray.app.router.command.RoutingContext.Network:type_name -> xray.common.net.Network
+	15, // 1: xray.app.router.command.RoutingContext.Attributes:type_name -> xray.app.router.command.RoutingContext.AttributesEntry
 	0,  // 2: xray.app.router.command.TestRouteRequest.RoutingContext:type_name -> xray.app.router.command.RoutingContext
 	4,  // 3: xray.app.router.command.BalancerMsg.override:type_name -> xray.app.router.command.OverrideInfo
 	3,  // 4: xray.app.router.command.BalancerMsg.principle_target:type_name -> xray.app.router.command.PrincipleTargetInfo
 	5,  // 5: xray.app.router.command.GetBalancerInfoResponse.balancer:type_name -> xray.app.router.command.BalancerMsg
-	1,  // 6: xray.app.router.command.RoutingService.SubscribeRoutingStats:input_type -> xray.app.router.command.SubscribeRoutingStatsRequest
-	2,  // 7: xray.app.router.command.RoutingService.TestRoute:input_type -> xray.app.router.command.TestRouteRequest
-	6,  // 8: xray.app.router.command.RoutingService.GetBalancerInfo:input_type -> xray.app.router.command.GetBalancerInfoRequest
-	8,  // 9: xray.app.router.command.RoutingService.OverrideBalancerTarget:input_type -> xray.app.router.command.OverrideBalancerTargetRequest
-	0,  // 10: xray.app.router.command.RoutingService.SubscribeRoutingStats:output_type -> xray.app.router.command.RoutingContext
-	0,  // 11: xray.app.router.command.RoutingService.TestRoute:output_type -> xray.app.router.command.RoutingContext
-	7,  // 12: xray.app.router.command.RoutingService.GetBalancerInfo:output_type -> xray.app.router.command.GetBalancerInfoResponse
-	9,  // 13: xray.app.router.command.RoutingService.OverrideBalancerTarget:output_type -> xray.app.router.command.OverrideBalancerTargetResponse
-	10, // [10:14] is the sub-list for method output_type
-	6,  // [6:10] is the sub-list for method input_type
-	6,  // [6:6] is the sub-list for extension type_name
-	6,  // [6:6] is the sub-list for extension extendee
-	0,  // [0:6] is the sub-list for field type_name
+	17, // 6: xray.app.router.command.AddRuleRequest.config:type_name -> xray.common.serial.TypedMessage
+	1,  // 7: xray.app.router.command.RoutingService.SubscribeRoutingStats:input_type -> xray.app.router.command.SubscribeRoutingStatsRequest
+	2,  // 8: xray.app.router.command.RoutingService.TestRoute:input_type -> xray.app.router.command.TestRouteRequest
+	6,  // 9: xray.app.router.command.RoutingService.GetBalancerInfo:input_type -> xray.app.router.command.GetBalancerInfoRequest
+	8,  // 10: xray.app.router.command.RoutingService.OverrideBalancerTarget:input_type -> xray.app.router.command.OverrideBalancerTargetRequest
+	10, // 11: xray.app.router.command.RoutingService.AddRule:input_type -> xray.app.router.command.AddRuleRequest
+	12, // 12: xray.app.router.command.RoutingService.RemoveRule:input_type -> xray.app.router.command.RemoveRuleRequest
+	0,  // 13: xray.app.router.command.RoutingService.SubscribeRoutingStats:output_type -> xray.app.router.command.RoutingContext
+	0,  // 14: xray.app.router.command.RoutingService.TestRoute:output_type -> xray.app.router.command.RoutingContext
+	7,  // 15: xray.app.router.command.RoutingService.GetBalancerInfo:output_type -> xray.app.router.command.GetBalancerInfoResponse
+	9,  // 16: xray.app.router.command.RoutingService.OverrideBalancerTarget:output_type -> xray.app.router.command.OverrideBalancerTargetResponse
+	11, // 17: xray.app.router.command.RoutingService.AddRule:output_type -> xray.app.router.command.AddRuleResponse
+	13, // 18: xray.app.router.command.RoutingService.RemoveRule:output_type -> xray.app.router.command.RemoveRuleResponse
+	13, // [13:19] is the sub-list for method output_type
+	7,  // [7:13] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
 }

 func init() { file_app_router_command_command_proto_init() }
@@ -977,6 +1193,54 @@ func file_app_router_command_command_proto_init() {
 			}
 		}
 		file_app_router_command_command_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AddRuleRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_app_router_command_command_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AddRuleResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_app_router_command_command_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RemoveRuleRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_app_router_command_command_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RemoveRuleResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_app_router_command_command_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Config); i {
 			case 0:
 				return &v.state
@@ -995,7 +1259,7 @@ func file_app_router_command_command_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_router_command_command_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
--- a/app/router/command/command.proto
+++ b/app/router/command/command.proto
@@ -7,6 +7,7 @@ option java_package = "com.xray.app.router.command";
 option java_multiple_files = true;

 import "common/net/network.proto";
+import "common/serial/typed_message.proto";

 // RoutingContext is the context with information relative to routing process.
 // It conforms to the structure of xray.features.routing.Context and
@@ -88,6 +89,18 @@ message OverrideBalancerTargetRequest {

 message OverrideBalancerTargetResponse {}

+message AddRuleRequest {
+  xray.common.serial.TypedMessage config = 1;
+  bool shouldAppend = 2;
+}
+message AddRuleResponse {}
+
+message RemoveRuleRequest {
+  string ruleTag = 1;
+}
+
+message RemoveRuleResponse {}
+
 service RoutingService {
  rpc SubscribeRoutingStats(SubscribeRoutingStatsRequest)
      returns (stream RoutingContext) {}
@@ -95,6 +108,9 @@ service RoutingService {

  rpc GetBalancerInfo(GetBalancerInfoRequest) returns (GetBalancerInfoResponse){}
  rpc OverrideBalancerTarget(OverrideBalancerTargetRequest) returns (OverrideBalancerTargetResponse) {}
+  
+  rpc AddRule(AddRuleRequest) returns (AddRuleResponse) {}
+  rpc RemoveRule(RemoveRuleRequest) returns (RemoveRuleResponse) {}
 }

 message Config {}
--- a/app/router/command/command_grpc.pb.go
+++ b/app/router/command/command_grpc.pb.go
@@ -23,6 +23,8 @@ const (
 	RoutingService_TestRoute_FullMethodName              = "/xray.app.router.command.RoutingService/TestRoute"
 	RoutingService_GetBalancerInfo_FullMethodName        = "/xray.app.router.command.RoutingService/GetBalancerInfo"
 	RoutingService_OverrideBalancerTarget_FullMethodName = "/xray.app.router.command.RoutingService/OverrideBalancerTarget"
+	RoutingService_AddRule_FullMethodName                = "/xray.app.router.command.RoutingService/AddRule"
+	RoutingService_RemoveRule_FullMethodName             = "/xray.app.router.command.RoutingService/RemoveRule"
 )

 // RoutingServiceClient is the client API for RoutingService service.
@@ -33,6 +35,8 @@ type RoutingServiceClient interface {
 	TestRoute(ctx context.Context, in *TestRouteRequest, opts ...grpc.CallOption) (*RoutingContext, error)
 	GetBalancerInfo(ctx context.Context, in *GetBalancerInfoRequest, opts ...grpc.CallOption) (*GetBalancerInfoResponse, error)
 	OverrideBalancerTarget(ctx context.Context, in *OverrideBalancerTargetRequest, opts ...grpc.CallOption) (*OverrideBalancerTargetResponse, error)
+	AddRule(ctx context.Context, in *AddRuleRequest, opts ...grpc.CallOption) (*AddRuleResponse, error)
+	RemoveRule(ctx context.Context, in *RemoveRuleRequest, opts ...grpc.CallOption) (*RemoveRuleResponse, error)
 }

 type routingServiceClient struct {
@@ -102,6 +106,24 @@ func (c *routingServiceClient) OverrideBalancerTarget(ctx context.Context, in *O
 	return out, nil
 }

+func (c *routingServiceClient) AddRule(ctx context.Context, in *AddRuleRequest, opts ...grpc.CallOption) (*AddRuleResponse, error) {
+	out := new(AddRuleResponse)
+	err := c.cc.Invoke(ctx, RoutingService_AddRule_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *routingServiceClient) RemoveRule(ctx context.Context, in *RemoveRuleRequest, opts ...grpc.CallOption) (*RemoveRuleResponse, error) {
+	out := new(RemoveRuleResponse)
+	err := c.cc.Invoke(ctx, RoutingService_RemoveRule_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // RoutingServiceServer is the server API for RoutingService service.
 // All implementations must embed UnimplementedRoutingServiceServer
 // for forward compatibility
@@ -110,6 +132,8 @@ type RoutingServiceServer interface {
 	TestRoute(context.Context, *TestRouteRequest) (*RoutingContext, error)
 	GetBalancerInfo(context.Context, *GetBalancerInfoRequest) (*GetBalancerInfoResponse, error)
 	OverrideBalancerTarget(context.Context, *OverrideBalancerTargetRequest) (*OverrideBalancerTargetResponse, error)
+	AddRule(context.Context, *AddRuleRequest) (*AddRuleResponse, error)
+	RemoveRule(context.Context, *RemoveRuleRequest) (*RemoveRuleResponse, error)
 	mustEmbedUnimplementedRoutingServiceServer()
 }

@@ -129,6 +153,12 @@ func (UnimplementedRoutingServiceServer) GetBalancerInfo(context.Context, *GetBa
 func (UnimplementedRoutingServiceServer) OverrideBalancerTarget(context.Context, *OverrideBalancerTargetRequest) (*OverrideBalancerTargetResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method OverrideBalancerTarget not implemented")
 }
+func (UnimplementedRoutingServiceServer) AddRule(context.Context, *AddRuleRequest) (*AddRuleResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method AddRule not implemented")
+}
+func (UnimplementedRoutingServiceServer) RemoveRule(context.Context, *RemoveRuleRequest) (*RemoveRuleResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RemoveRule not implemented")
+}
 func (UnimplementedRoutingServiceServer) mustEmbedUnimplementedRoutingServiceServer() {}

 // UnsafeRoutingServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -217,6 +247,42 @@ func _RoutingService_OverrideBalancerTarget_Handler(srv interface{}, ctx context
 	return interceptor(ctx, in, info, handler)
 }

+func _RoutingService_AddRule_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(AddRuleRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RoutingServiceServer).AddRule(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: RoutingService_AddRule_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RoutingServiceServer).AddRule(ctx, req.(*AddRuleRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _RoutingService_RemoveRule_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RemoveRuleRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(RoutingServiceServer).RemoveRule(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: RoutingService_RemoveRule_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(RoutingServiceServer).RemoveRule(ctx, req.(*RemoveRuleRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // RoutingService_ServiceDesc is the grpc.ServiceDesc for RoutingService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -236,6 +302,14 @@ var RoutingService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "OverrideBalancerTarget",
 			Handler:    _RoutingService_OverrideBalancerTarget_Handler,
 		},
+		{
+			MethodName: "AddRule",
+			Handler:    _RoutingService_AddRule_Handler,
+		},
+		{
+			MethodName: "RemoveRule",
+			Handler:    _RoutingService_RemoveRule_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
--- a/app/router/command/command_test.go
+++ b/app/router/command/command_test.go
@@ -16,6 +16,7 @@ import (
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/testing/mocks"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/test/bufconn"
 )

@@ -80,7 +81,7 @@ func TestServiceSubscribeRoutingStats(t *testing.T) {
 	// Client goroutine
 	go func() {
 		defer lis.Close()
-		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithInsecure())
+		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithTransportCredentials(insecure.NewCredentials()))
 		if err != nil {
 			errCh <- err
 			return
@@ -214,7 +215,7 @@ func TestServiceSubscribeSubsetOfFields(t *testing.T) {
 	// Client goroutine
 	go func() {
 		defer lis.Close()
-		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithInsecure())
+		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithTransportCredentials(insecure.NewCredentials()))
 		if err != nil {
 			errCh <- err
 			return
@@ -337,7 +338,7 @@ func TestSerivceTestRoute(t *testing.T) {
 	// Client goroutine
 	go func() {
 		defer lis.Close()
-		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithInsecure())
+		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithTransportCredentials(insecure.NewCredentials()))
 		if err != nil {
 			errCh <- err
 		}
--- a/app/router/config.go
+++ b/app/router/config.go
@@ -11,6 +11,7 @@ import (

 type Rule struct {
 	Tag       string
+	RuleTag   string
 	Balancer  *Balancer
 	Condition Condition
 }
@@ -126,15 +127,17 @@ func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatch
 	switch strings.ToLower(br.Strategy) {
 	case "leastping":
 		return &Balancer{
-			selectors: br.OutboundSelector,
-			strategy:  &LeastPingStrategy{},
-			ohm:       ohm,
+			selectors:   br.OutboundSelector,
+			strategy:    &LeastPingStrategy{},
+			fallbackTag: br.FallbackTag,
+			ohm:         ohm,
 		}, nil
 	case "roundrobin":
 		return &Balancer{
-			selectors: br.OutboundSelector,
-			strategy:  &RoundRobinStrategy{},
-			ohm:       ohm,
+			selectors:   br.OutboundSelector,
+			strategy:    &RoundRobinStrategy{FallbackTag: br.FallbackTag},
+			fallbackTag: br.FallbackTag,
+			ohm:         ohm,
 		}, nil
 	case "leastload":
 		i, err := br.StrategySettings.GetInstance()
@@ -147,17 +150,19 @@ func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatch
 		}
 		leastLoadStrategy := NewLeastLoadStrategy(s)
 		return &Balancer{
-			selectors: br.OutboundSelector,
-			ohm:       ohm, fallbackTag: br.FallbackTag,
-			strategy: leastLoadStrategy,
+			selectors:   br.OutboundSelector,
+			ohm:         ohm,
+			fallbackTag: br.FallbackTag,
+			strategy:    leastLoadStrategy,
 		}, nil
 	case "random":
 		fallthrough
 	case "":
 		return &Balancer{
-			selectors: br.OutboundSelector,
-			ohm:       ohm, fallbackTag: br.FallbackTag,
-			strategy: &RandomStrategy{},
+			selectors:   br.OutboundSelector,
+			ohm:         ohm,
+			fallbackTag: br.FallbackTag,
+			strategy:    &RandomStrategy{FallbackTag: br.FallbackTag},
 		}, nil
 	default:
 		return nil, newError("unrecognized balancer type")
--- a/app/router/config.pb.go
+++ b/app/router/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/router/config.proto

@@ -482,6 +482,7 @@ type RoutingRule struct {
 	//	*RoutingRule_Tag
 	//	*RoutingRule_BalancingTag
 	TargetTag isRoutingRule_TargetTag `protobuf_oneof:"target_tag"`
+	RuleTag   string                  `protobuf:"bytes,18,opt,name=rule_tag,json=ruleTag,proto3" json:"rule_tag,omitempty"`
 	// List of domains for target domain matching.
 	Domain []*Domain `protobuf:"bytes,2,rep,name=domain,proto3" json:"domain,omitempty"`
 	// List of CIDRs for target IP address matching.
@@ -576,6 +577,13 @@ func (x *RoutingRule) GetBalancingTag() string {
 	return ""
 }

+func (x *RoutingRule) GetRuleTag() string {
+	if x != nil {
+		return x.RuleTag
+	}
+	return ""
+}
+
 func (x *RoutingRule) GetDomain() []*Domain {
 	if x != nil {
 		return x.Domain
@@ -856,7 +864,7 @@ type StrategyLeastLoadConfig struct {
 	Baselines []int64 `protobuf:"varint,3,rep,packed,name=baselines,proto3" json:"baselines,omitempty"`
 	// expected nodes count to select
 	Expected int32 `protobuf:"varint,4,opt,name=expected,proto3" json:"expected,omitempty"`
-	// max acceptable rtt, filter away high delay nodes. defalut 0
+	// max acceptable rtt, filter away high delay nodes. default 0
 	MaxRTT int64 `protobuf:"varint,5,opt,name=maxRTT,proto3" json:"maxRTT,omitempty"`
 	// acceptable failure rate
 	Tolerance float32 `protobuf:"fixed32,6,opt,name=tolerance,proto3" json:"tolerance,omitempty"`
@@ -1135,120 +1143,122 @@ var file_app_router_config_proto_rawDesc = []byte{
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+	0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x26, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
+	0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x44,
+	0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x0e, 0x64,
+	0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x30, 0x0a,
+	0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x78, 0x72,
+	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x52, 0x6f,
+	0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x12,
+	0x45, 0x0a, 0x0e, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x5f, 0x72, 0x75, 0x6c,
+	0x65, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1e, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61,
+	0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63,
+	0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x0d, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69,
+	0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x22, 0x47, 0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
+	0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x08, 0x0a, 0x04, 0x41, 0x73, 0x49, 0x73,
+	0x10, 0x00, 0x12, 0x09, 0x0a, 0x05, 0x55, 0x73, 0x65, 0x49, 0x70, 0x10, 0x01, 0x12, 0x10, 0x0a,
+	0x0c, 0x49, 0x70, 0x49, 0x66, 0x4e, 0x6f, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x10, 0x02, 0x12,
+	0x0e, 0x0a, 0x0a, 0x49, 0x70, 0x4f, 0x6e, 0x44, 0x65, 0x6d, 0x61, 0x6e, 0x64, 0x10, 0x03, 0x42,
+	0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
+	0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x50, 0x01, 0x5a, 0x24, 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, 0x61, 0x70, 0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0xaa, 0x02,
+	0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/app/router/config.proto
+++ b/app/router/config.proto
@@ -79,6 +79,7 @@ message RoutingRule {
    // Tag of routing balancer.
    string balancing_tag = 12;
  }
+    string rule_tag = 18;

  // List of domains for target domain matching.
  repeated Domain domain = 2;
@@ -146,7 +147,7 @@ message StrategyLeastLoadConfig {
  repeated int64 baselines = 3;
  // expected nodes count to select
  int32 expected = 4;
-  // max acceptable rtt, filter away high delay nodes. defalut 0
+  // max acceptable rtt, filter away high delay nodes. default 0
  int64 maxRTT = 5;
  // acceptable failure rate
  float tolerance = 6;
--- a/app/router/router.go
+++ b/app/router/router.go
@@ -4,8 +4,10 @@ package router

 import (
 	"context"
+	sync "sync"

 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/outbound"
@@ -19,6 +21,11 @@ type Router struct {
 	rules          []*Rule
 	balancers      map[string]*Balancer
 	dns            dns.Client
+
+	ctx        context.Context
+	ohm        outbound.Manager
+	dispatcher routing.Dispatcher
+	mu         sync.Mutex
 }

 // Route is an implementation of routing.Route.
@@ -32,6 +39,9 @@ type Route struct {
 func (r *Router) Init(ctx context.Context, config *Config, d dns.Client, ohm outbound.Manager, dispatcher routing.Dispatcher) error {
 	r.domainStrategy = config.DomainStrategy
 	r.dns = d
+	r.ctx = ctx
+	r.ohm = ohm
+	r.dispatcher = dispatcher

 	r.balancers = make(map[string]*Balancer, len(config.BalancingRule))
 	for _, rule := range config.BalancingRule {
@@ -52,6 +62,7 @@ func (r *Router) Init(ctx context.Context, config *Config, d dns.Client, ohm out
 		rr := &Rule{
 			Condition: cond,
 			Tag:       rule.GetTag(),
+			RuleTag:   rule.GetRuleTag(),
 		}
 		btag := rule.GetBalancingTag()
 		if len(btag) > 0 {
@@ -80,6 +91,96 @@ func (r *Router) PickRoute(ctx routing.Context) (routing.Route, error) {
 	return &Route{Context: ctx, outboundTag: tag}, nil
 }

+// AddRule implements routing.Router.
+func (r *Router) AddRule(config *serial.TypedMessage, shouldAppend bool) error {
+
+	inst, err := config.GetInstance()
+	if err != nil {
+		return err
+	}
+	if c, ok := inst.(*Config); ok {
+		return r.ReloadRules(c, shouldAppend)
+	}
+	return newError("AddRule: config type error")
+}
+
+func (r *Router) ReloadRules(config *Config, shouldAppend bool) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if !shouldAppend {
+		r.balancers = make(map[string]*Balancer, len(config.BalancingRule))
+		r.rules = make([]*Rule, 0, len(config.Rule))
+	}
+	for _, rule := range config.BalancingRule {
+		_, found := r.balancers[rule.Tag]
+		if found {
+			return newError("duplicate balancer tag")
+		}
+		balancer, err := rule.Build(r.ohm, r.dispatcher)
+		if err != nil {
+			return err
+		}
+		balancer.InjectContext(r.ctx)
+		r.balancers[rule.Tag] = balancer
+	}
+
+	for _, rule := range config.Rule {
+		if r.RuleExists(rule.GetRuleTag()) {
+			return newError("duplicate ruleTag ", rule.GetRuleTag())
+		}
+		cond, err := rule.BuildCondition()
+		if err != nil {
+			return err
+		}
+		rr := &Rule{
+			Condition: cond,
+			Tag:       rule.GetTag(),
+			RuleTag:   rule.GetRuleTag(),
+		}
+		btag := rule.GetBalancingTag()
+		if len(btag) > 0 {
+			brule, found := r.balancers[btag]
+			if !found {
+				return newError("balancer ", btag, " not found")
+			}
+			rr.Balancer = brule
+		}
+		r.rules = append(r.rules, rr)
+	}
+
+	return nil
+}
+
+func (r *Router) RuleExists(tag string) bool {
+	if tag != "" {
+		for _, rule := range r.rules {
+			if rule.RuleTag == tag {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// RemoveRule implements routing.Router.
+func (r *Router) RemoveRule(tag string) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	newRules := []*Rule{}
+	if tag != "" {
+		for _, rule := range r.rules {
+			if rule.RuleTag != tag {
+				newRules = append(newRules, rule)
+			}
+		}
+		r.rules = newRules
+		return nil
+	}
+	return newError("empty tag name!")
+
+}
 func (r *Router) pickRouteInternal(ctx routing.Context) (*Rule, routing.Context, error) {
 	// SkipDNSResolve is set from DNS module.
 	// the DOH remote server maybe a domain name,
--- a/app/router/router_test.go
+++ b/app/router/router_test.go
@@ -45,7 +45,9 @@ func TestSimpleRouter(t *testing.T) {
 		HandlerSelector: mockHs,
 	}, nil))

-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
+		Target: net.TCPDestination(net.DomainAddress("example.com"), 80),
+	}})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
 	common.Must(err)
 	if tag := route.GetOutboundTag(); tag != "test" {
@@ -86,7 +88,9 @@ func TestSimpleBalancer(t *testing.T) {
 		HandlerSelector: mockHs,
 	}, nil))

-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
+		Target: net.TCPDestination(net.DomainAddress("example.com"), 80),
+	}})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
 	common.Must(err)
 	if tag := route.GetOutboundTag(); tag != "test" {
@@ -174,7 +178,9 @@ func TestIPOnDemand(t *testing.T) {
 	r := new(Router)
 	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))

-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
+		Target: net.TCPDestination(net.DomainAddress("example.com"), 80),
+	}})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
 	common.Must(err)
 	if tag := route.GetOutboundTag(); tag != "test" {
@@ -213,7 +219,9 @@ func TestIPIfNonMatchDomain(t *testing.T) {
 	r := new(Router)
 	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))

-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
+		Target: net.TCPDestination(net.DomainAddress("example.com"), 80),
+	}})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
 	common.Must(err)
 	if tag := route.GetOutboundTag(); tag != "test" {
@@ -247,7 +255,9 @@ func TestIPIfNonMatchIP(t *testing.T) {
 	r := new(Router)
 	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))

-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.LocalHostIP, 80)})
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
+		Target: net.TCPDestination(net.LocalHostIP, 80),
+	}})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
 	common.Must(err)
 	if tag := route.GetOutboundTag(); tag != "test" {
--- a/app/router/strategy_random.go
+++ b/app/router/strategy_random.go
@@ -1,17 +1,63 @@
 package router

 import (
+	"context"
+
+	"github.com/xtls/xray-core/app/observatory"
+	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/extension"
 )

 // RandomStrategy represents a random balancing strategy
-type RandomStrategy struct{}
+type RandomStrategy struct{
+	FallbackTag string
+
+	ctx         context.Context
+	observatory extension.Observatory
+}
+
+func (s *RandomStrategy) InjectContext(ctx context.Context) {
+	s.ctx = ctx
+}

 func (s *RandomStrategy) GetPrincipleTarget(strings []string) []string {
 	return strings
 }

 func (s *RandomStrategy) PickOutbound(candidates []string) string {
+	if len(s.FallbackTag) > 0 && s.observatory == nil {
+		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
+			s.observatory = observatory
+			return nil
+		}))
+	}
+	if s.observatory != nil {
+		observeReport, err := s.observatory.GetObservation(s.ctx)
+		if err == nil {
+			aliveTags := make([]string, 0)
+			if result, ok := observeReport.(*observatory.ObservationResult); ok {
+				status := result.Status
+				statusMap := make(map[string]*observatory.OutboundStatus)
+				for _, outboundStatus := range status {
+					statusMap[outboundStatus.OutboundTag] = outboundStatus
+				}
+				for _, candidate := range candidates {
+					if outboundStatus, found := statusMap[candidate]; found {
+						if outboundStatus.Alive {
+							aliveTags = append(aliveTags, candidate)
+						}
+					} else {
+						// unfound candidate is considered alive
+						aliveTags = append(aliveTags, candidate)
+					}
+				}
+				candidates = aliveTags
+			}
+		}
+	}
+
 	count := len(candidates)
 	if count == 0 {
 		// goes to fallbackTag
--- a/app/stats/command/command.pb.go
+++ b/app/stats/command/command.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/stats/command/command.proto

--- a/app/stats/config.pb.go
+++ b/app/stats/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: app/stats/config.proto

--- a/common/crypto/auth.go
+++ b/common/crypto/auth.go
@@ -178,7 +178,7 @@ func (r *AuthenticationReader) readInternal(soft bool, mb *buf.MultiBuffer) erro
 	if size <= buf.Size {
 		b, err := r.readBuffer(int32(size), int32(padding))
 		if err != nil {
-			return nil
+			return err
 		}
 		*mb = append(*mb, b)
 		return nil
--- a/common/dice/dice.go
+++ b/common/dice/dice.go
@@ -4,7 +4,6 @@ package dice // import "github.com/xtls/xray-core/common/dice"

 import (
 	"math/rand"
-	"time"
 )

 // Roll returns a non-negative number between 0 (inclusive) and n (exclusive).
@@ -46,7 +45,3 @@ func (dd *DeterministicDice) Roll(n int) int {
 	}
 	return dd.Intn(n)
 }
-
-func init() {
-	rand.Seed(time.Now().Unix())
-}
--- a/common/drain/drainer.go
+++ b/common/drain/drainer.go
@@ -2,7 +2,6 @@ package drain

 import (
 	"io"
-	"io/ioutil"

 	"github.com/xtls/xray-core/common/dice"
 )
@@ -36,7 +35,7 @@ func (d *BehaviorSeedLimitedDrainer) Drain(reader io.Reader) error {
 }

 func drainReadN(reader io.Reader, n int) error {
-	_, err := io.CopyN(ioutil.Discard, reader, int64(n))
+	_, err := io.CopyN(io.Discard, reader, int64(n))
 	return err
 }

--- a/common/log/log.pb.go
+++ b/common/log/log.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/log/log.proto

--- a/common/mux/client.go
+++ b/common/mux/client.go
@@ -148,9 +148,10 @@ func (f *DialingWorkerFactory) Create() (*ClientWorker, error) {
 	}

 	go func(p proxy.Outbound, d internet.Dialer, c common.Closable) {
-		ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{
+		outbounds := []*session.Outbound{{
 			Target: net.TCPDestination(muxCoolAddress, muxCoolPort),
-		})
+		}}
+		ctx := session.ContextWithOutbounds(context.Background(), outbounds)
 		ctx, cancel := context.WithCancel(ctx)

 		if err := p.Process(ctx, &transport.Link{Reader: uplinkReader, Writer: downlinkWriter}, d); err != nil {
@@ -242,17 +243,18 @@ func writeFirstPayload(reader buf.Reader, writer *Writer) error {
 }

 func fetchInput(ctx context.Context, s *Session, output buf.Writer) {
-	dest := session.OutboundFromContext(ctx).Target
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
 	transferType := protocol.TransferTypeStream
-	if dest.Network == net.Network_UDP {
+	if ob.Target.Network == net.Network_UDP {
 		transferType = protocol.TransferTypePacket
 	}
 	s.transferType = transferType
-	writer := NewWriter(s.ID, dest, output, transferType, xudp.GetGlobalID(ctx))
+	writer := NewWriter(s.ID, ob.Target, output, transferType, xudp.GetGlobalID(ctx))
 	defer s.Close(false)
 	defer writer.Close()

-	newError("dispatching request to ", dest).WriteToLog(session.ExportIDToError(ctx))
+	newError("dispatching request to ", ob.Target).WriteToLog(session.ExportIDToError(ctx))
 	if err := writeFirstPayload(s.input, writer); err != nil {
 		newError("failed to write first payload").Base(err).WriteToLog(session.ExportIDToError(ctx))
 		writer.hasError = true
--- a/common/mux/client_test.go
+++ b/common/mux/client_test.go
@@ -86,9 +86,9 @@ func TestClientWorkerClose(t *testing.T) {
 	}

 	tr1, tw1 := pipe.New(pipe.WithoutSizeLimit())
-	ctx1 := session.ContextWithOutbound(context.Background(), &session.Outbound{
+	ctx1 := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
 		Target: net.TCPDestination(net.DomainAddress("www.example.com"), 80),
-	})
+	}})
 	common.Must(manager.Dispatch(ctx1, &transport.Link{
 		Reader: tr1,
 		Writer: tw1,
@@ -103,9 +103,9 @@ func TestClientWorkerClose(t *testing.T) {
 	}

 	tr2, tw2 := pipe.New(pipe.WithoutSizeLimit())
-	ctx2 := session.ContextWithOutbound(context.Background(), &session.Outbound{
+	ctx2 := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{
 		Target: net.TCPDestination(net.DomainAddress("www.example.com"), 80),
-	})
+	}})
 	common.Must(manager.Dispatch(ctx2, &transport.Link{
 		Reader: tr2,
 		Writer: tw2,
--- a/common/net/address.pb.go
+++ b/common/net/address.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/net/address.proto

--- a/common/net/destination.pb.go
+++ b/common/net/destination.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/net/destination.proto

--- a/common/net/network.pb.go
+++ b/common/net/network.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/net/network.proto

--- a/common/net/port.pb.go
+++ b/common/net/port.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/net/port.proto

--- a/common/protocol/headers.pb.go
+++ b/common/protocol/headers.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/protocol/headers.proto

--- a/common/protocol/server_spec.pb.go
+++ b/common/protocol/server_spec.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/protocol/server_spec.proto

--- a/common/protocol/user.pb.go
+++ b/common/protocol/user.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/protocol/user.proto

--- a/common/serial/typed_message.pb.go
+++ b/common/serial/typed_message.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: common/serial/typed_message.proto

--- a/common/session/context.go
+++ b/common/session/context.go
@@ -51,13 +51,13 @@ func InboundFromContext(ctx context.Context) *Inbound {
 	return nil
 }

-func ContextWithOutbound(ctx context.Context, outbound *Outbound) context.Context {
-	return context.WithValue(ctx, outboundSessionKey, outbound)
+func ContextWithOutbounds(ctx context.Context, outbounds []*Outbound) context.Context {
+	return context.WithValue(ctx, outboundSessionKey, outbounds)
 }

-func OutboundFromContext(ctx context.Context) *Outbound {
-	if outbound, ok := ctx.Value(outboundSessionKey).(*Outbound); ok {
-		return outbound
+func OutboundsFromContext(ctx context.Context) []*Outbound {
+	if outbounds, ok := ctx.Value(outboundSessionKey).([]*Outbound); ok {
+		return outbounds
 	}
 	return nil
 }
--- a/common/session/session.go
+++ b/common/session/session.go
@@ -44,24 +44,17 @@ type Inbound struct {
 	Tag string
 	// Name of the inbound proxy that handles the connection.
 	Name string
-	// User is the user that authencates for the inbound. May be nil if the protocol allows anounymous traffic.
+	// User is the user that authenticates for the inbound. May be nil if the protocol allows anonymous traffic.
 	User *protocol.MemoryUser
 	// Conn is actually internet.Connection. May be nil.
 	Conn net.Conn
 	// Timer of the inbound buf copier. May be nil.
 	Timer *signal.ActivityTimer
-	// CanSpliceCopy is a property for this connection, set by both inbound and outbound
+	// CanSpliceCopy is a property for this connection
 	// 1 = can, 2 = after processing protocol info should be able to, 3 = cannot
 	CanSpliceCopy int
 }

-func(i *Inbound) SetCanSpliceCopy(canSpliceCopy int) int {
-	if canSpliceCopy > i.CanSpliceCopy {
-		i.CanSpliceCopy = canSpliceCopy
-	}
-	return i.CanSpliceCopy
-}
-
 // Outbound is the metadata of an outbound connection.
 type Outbound struct {
 	// Target address of the outbound connection.
@@ -70,10 +63,15 @@ type Outbound struct {
 	RouteTarget    net.Destination
 	// Gateway address
 	Gateway net.Address
+	// Tag of the outbound proxy that handles the connection.
+	Tag string
 	// Name of the outbound proxy that handles the connection.
 	Name string
 	// Conn is actually internet.Connection. May be nil. It is currently nil for outbound with proxySettings 
 	Conn net.Conn
+	// CanSpliceCopy is a property for this connection
+	// 1 = can, 2 = after processing protocol info should be able to, 3 = cannot
+	CanSpliceCopy int
 }

 // SniffingRequest controls the behavior of content sniffing.
--- a/common/singbridge/dialer.go
+++ b/common/singbridge/dialer.go
@@ -43,9 +43,14 @@ func NewOutboundDialer(outbound proxy.Outbound, dialer internet.Dialer) *XrayOut
 }

 func (d *XrayOutboundDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
-	ctx = session.ContextWithOutbound(ctx, &session.Outbound{
-		Target: ToDestination(destination, ToNetwork(network)),
-	})
+	outbounds := session.OutboundsFromContext(ctx)
+	if len(outbounds) == 0 {
+		outbounds = []*session.Outbound{{}}
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
+	}
+	ob := outbounds[len(outbounds) - 1]
+	ob.Target = ToDestination(destination, ToNetwork(network))
+	
 	opts := []pipe.Option{pipe.WithSizeLimit(64 * 1024)}
 	uplinkReader, uplinkWriter := pipe.New(opts...)
 	downlinkReader, downlinkWriter := pipe.New(opts...)
--- a/core/config.go
+++ b/core/config.go
@@ -24,7 +24,7 @@ type ConfigLoader func(input interface{}) (*Config, error)
 // ConfigBuilder is a builder to build core.Config from filenames and formats
 type ConfigBuilder func(files []string, formats []string) (*Config, error)

-// ConfigMerger merge multiple json configs into on config
+// ConfigsMerger merge multiple json configs into on config
 type ConfigsMerger func(files []string, formats []string) (string, error)

 var (
--- a/core/config.pb.go
+++ b/core/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: core/config.proto

--- a/core/core.go
+++ b/core/core.go
@@ -21,7 +21,7 @@ import (
 var (
 	Version_x byte = 1
 	Version_y byte = 8
-	Version_z byte = 8
+	Version_z byte = 13
 )

 var (
--- a/features/routing/router.go
+++ b/features/routing/router.go
@@ -2,6 +2,7 @@ package routing

 import (
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/features"
 )

@@ -13,6 +14,8 @@ type Router interface {

 	// PickRoute returns a route decision based on the given routing context.
 	PickRoute(ctx Context) (Route, error)
+	AddRule(config *serial.TypedMessage, shouldAppend bool) error
+	RemoveRule(tag string) error
 }

 // Route is the routing result of Router feature.
@@ -49,6 +52,16 @@ func (DefaultRouter) PickRoute(ctx Context) (Route, error) {
 	return nil, common.ErrNoClue
 }

+// AddRule implements Router.
+func (DefaultRouter) AddRule(config *serial.TypedMessage, shouldAppend bool) error {
+	return common.ErrNoClue
+}
+
+// RemoveRule implements Router.
+func (DefaultRouter) RemoveRule(tag string) error {
+	return common.ErrNoClue
+}
+
 // Start implements common.Runnable.
 func (DefaultRouter) Start() error {
 	return nil
--- a/features/routing/session/context.go
+++ b/features/routing/session/context.go
@@ -124,9 +124,11 @@ func (ctx *Context) GetSkipDNSResolve() bool {

 // AsRoutingContext creates a context from context.context with session info.
 func AsRoutingContext(ctx context.Context) routing.Context {
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
 	return &Context{
 		Inbound:  session.InboundFromContext(ctx),
-		Outbound: session.OutboundFromContext(ctx),
+		Outbound: ob,
 		Content:  session.ContentFromContext(ctx),
 	}
 }
--- a/go.mod
+++ b/go.mod
@@ -3,59 +3,59 @@ module github.com/xtls/xray-core
 go 1.22

 require (
+	github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0
+	github.com/cloudflare/circl v1.3.8
 	github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344
 	github.com/golang/mock v1.7.0-rc.1
 	github.com/google/go-cmp v0.6.0
 	github.com/gorilla/websocket v1.5.1
-	github.com/miekg/dns v1.1.58
+	github.com/miekg/dns v1.1.59
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.7.0
-	github.com/quic-go/quic-go v0.41.0
-	github.com/refraction-networking/utls v1.6.3
-	github.com/sagernet/sing v0.3.2
+	github.com/quic-go/quic-go v0.44.0
+	github.com/refraction-networking/utls v1.6.6
+	github.com/sagernet/sing v0.3.8
 	github.com/sagernet/sing-shadowsocks v0.2.6
 	github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.9.0
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
 	github.com/vishvananda/netlink v1.2.1-beta.2.0.20230316163032-ced5aaba43e3
-	github.com/xtls/reality v0.0.0-20231112171332-de1173cf2b19
+	github.com/xtls/reality v0.0.0-20240429224917-ecc4401070cc
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba
-	golang.org/x/crypto v0.19.0
-	golang.org/x/net v0.21.0
-	golang.org/x/sync v0.6.0
-	golang.org/x/sys v0.17.0
+	golang.org/x/crypto v0.23.0
+	golang.org/x/net v0.25.0
+	golang.org/x/sync v0.7.0
+	golang.org/x/sys v0.20.0
 	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
-	google.golang.org/grpc v1.62.0
-	google.golang.org/protobuf v1.32.0
-	gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b
+	google.golang.org/grpc v1.64.0
+	google.golang.org/protobuf v1.34.1
+	gvisor.dev/gvisor v0.0.0-20231202080848-1f7806d17489
 	h12.io/socks v1.0.3
-	lukechampine.com/blake3 v1.2.1
+	lukechampine.com/blake3 v1.3.0
 )

 require (
 	github.com/andybalholm/brotli v1.1.0 // indirect
-	github.com/cloudflare/circl v1.3.7 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-metro v0.0.0-20211217172704-adc40b04c140 // indirect
 	github.com/francoispqt/gojay v1.2.13 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/btree v1.1.2 // indirect
-	github.com/google/pprof v0.0.0-20240225044709-fd706174c886 // indirect
+	github.com/google/pprof v0.0.0-20240227163752-401108e1b7e7 // indirect
 	github.com/klauspost/compress v1.17.7 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
-	github.com/onsi/ginkgo/v2 v2.15.0 // indirect
+	github.com/onsi/ginkgo/v2 v2.16.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
 	github.com/vishvananda/netns v0.0.4 // indirect
 	go.uber.org/mock v0.4.0 // indirect
-	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
-	golang.org/x/mod v0.15.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
+	golang.org/x/mod v0.17.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
-	golang.org/x/tools v0.18.0 // indirect
+	golang.org/x/tools v0.21.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -8,6 +8,8 @@ dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1
 dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
 git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0 h1:Wo41lDOevRJSGpevP+8Pk5bANX7fJacO2w04aqLiC5I=
+github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0/go.mod h1:FVGavL/QEBQDcBpr3fAojoK17xX5k9bicBphrOpP7uM=
 github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M=
 github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
@@ -15,8 +17,8 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
 github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cloudflare/circl v1.3.7 h1:qlCDlTPz2n9fu58M0Nh1J/JzcFpfgkFHHX3O35r5vcU=
-github.com/cloudflare/circl v1.3.7/go.mod h1:sRTcRWXGLrKw6yIGJ+l7amYJFfAXbZG0kBSc8r4zxgA=
+github.com/cloudflare/circl v1.3.8 h1:j+V8jJt09PoeMFIu2uh5JUyEaIHTXVOHslFoLNAKqwI=
+github.com/cloudflare/circl v1.3.8/go.mod h1:PDRU+oXvdD7KCtgKxW95M5Z8BpSCJXQORiZFnBQS5QU=
 github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -34,8 +36,8 @@ github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344 h1:Arcl6UOIS/kgO2nW3
 github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344/go.mod h1:GIjDIg/heH5DOkXY3YJ/wNhfHsQHoXGjl8G8amsYQ1I=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
-github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY=
-github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
+github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
@@ -47,22 +49,20 @@ github.com/golang/mock v1.7.0-rc.1 h1:YojYx61/OLFsiv6Rw1Z96LpldJIy31o+UHmwAUMJ6/
 github.com/golang/mock v1.7.0-rc.1/go.mod h1:s42URUywIqd+OcERslBJvOjepvNymP31m3q8d/GkuRs=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
-github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
+github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.1.2 h1:xf4v41cLI2Z6FxbKm+8Bu+m8ifhj15JuZ9sa0jZCMUU=
 github.com/google/btree v1.1.2/go.mod h1:qOPhT0dTNdNzV6Z/lhRX0YXUafgPLFUh+gZMl761Gm4=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
-github.com/google/pprof v0.0.0-20240225044709-fd706174c886 h1:JSJUTZTQT1Gzb2ROdAKOY3HwzBYcclS2GgumhMfHqjw=
-github.com/google/pprof v0.0.0-20240225044709-fd706174c886/go.mod h1:czg5+yv1E0ZGTi6S6vVK1mke0fV+FaUhNGcd6VRS9Ik=
+github.com/google/pprof v0.0.0-20240227163752-401108e1b7e7 h1:y3N7Bm7Y9/CtpiVkw/ZWj6lSlDF3F74SfKwfTCer72Q=
+github.com/google/pprof v0.0.0-20240227163752-401108e1b7e7/go.mod h1:czg5+yv1E0ZGTi6S6vVK1mke0fV+FaUhNGcd6VRS9Ik=
 github.com/googleapis/gax-go v2.0.0+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY=
 github.com/googleapis/gax-go/v2 v2.0.3/go.mod h1:LLvjysVCY1JZeum8Z6l8qUty8fiNwE08qbEPm1M08qg=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
@@ -90,14 +90,14 @@ github.com/lunixbochs/vtclean v1.0.0/go.mod h1:pHhQNgMf3btfWnGBVipUOjRYhoOsdGqdm
 github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/microcosm-cc/bluemonday v1.0.1/go.mod h1:hsXNsILzKxV+sX77C5b8FSuKF00vh2OMYv+xgHpAMF4=
-github.com/miekg/dns v1.1.58 h1:ca2Hdkz+cDg/7eNF6V56jjzuZ4aCAE+DbVkILdQWG/4=
-github.com/miekg/dns v1.1.58/go.mod h1:Ypv+3b/KadlvW9vJfXOTf300O4UqaHFzFCuHz+rPkBY=
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@@ -114,15 +114,15 @@ github.com/prometheus/client_golang v0.8.0/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
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@@ -155,8 +155,8 @@ github.com/sourcegraph/syntaxhighlight v0.0.0-20170531221838-bd320f5d308e/go.mod
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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@@ -167,8 +167,8 @@ github.com/vishvananda/netlink v1.2.1-beta.2.0.20230316163032-ced5aaba43e3/go.mo
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
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@@ -181,17 +181,17 @@ golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnf
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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@@ -203,8 +203,8 @@ golang.org/x/net v0.0.0-20190313220215-9f648a60d977/go.mod h1:t9HGtf8HONx5eT2rtn
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@@ -216,8 +216,8 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -230,15 +230,15 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
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-golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
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-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
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+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
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@@ -250,11 +250,10 @@ golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
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-golang.org/x/tools v0.18.0 h1:k8NLag8AGHnn+PHbl7g43CtqZAwG60vZkLqgyZgIHgQ=
-golang.org/x/tools v0.18.0/go.mod h1:GL7B4CwcLLeo59yx/9UWWuNOW1n3VZ4f5axWfML7Lcg=
+golang.org/x/tools v0.21.0 h1:qc0xYgIbsSDt9EyWz05J5wfa7LOVW0YTLOXrqdLAWIw=
+golang.org/x/tools v0.21.0/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
 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 v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
@@ -272,18 +271,16 @@ google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoA
 google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg=
 google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c h1:NUsgEN92SQQqzfA+YtqYNqYmB3DMMYLlIwUZAQFVFbo=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c/go.mod h1:H4O17MA/PE9BsGx3w+a+W2VOLLD1Qf7oJneAoU6WktY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237 h1:NnYq6UN9ReLM9/Y01KWNOWyI5xQ9kbIms5GGJVwS/Yc=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
 google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.62.0 h1:HQKZ/fa1bXkX1oFOvSjmZEUL8wLSaZTjCcLAlmZRtdk=
-google.golang.org/grpc v1.62.0/go.mod h1:IWTG0VlJLCh1SkC58F7np9ka9mx/WNkjl4PGJaiq+QE=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
-google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/grpc v1.64.0 h1:KH3VH9y/MgNQg1dE7b3XfVK0GsPSIzJwdF617gUSbvY=
+google.golang.org/grpc v1.64.0/go.mod h1:oxjF8E3FBnjp+/gVFYdWacaLDx9na1aqy9oovLpxQYg=
+google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
+google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -297,14 +294,14 @@ gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
-gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b h1:yqkg3pTifuKukuWanp8spDsL4irJkHF5WI0J47hU87o=
-gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b/go.mod h1:10sU+Uh5KKNv1+2x2A0Gvzt8FjD3ASIhorV3YsauXhk=
+gvisor.dev/gvisor v0.0.0-20231202080848-1f7806d17489 h1:ze1vwAdliUAr68RQ5NtufWaXaOg8WUO2OACzEV+TNdE=
+gvisor.dev/gvisor v0.0.0-20231202080848-1f7806d17489/go.mod h1:10sU+Uh5KKNv1+2x2A0Gvzt8FjD3ASIhorV3YsauXhk=
 h12.io/socks v1.0.3 h1:Ka3qaQewws4j4/eDQnOdpr4wXsC//dXtWvftlIcCQUo=
 h12.io/socks v1.0.3/go.mod h1:AIhxy1jOId/XCz9BO+EIgNL2rQiPTBNnOfnVnQ+3Eck=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-lukechampine.com/blake3 v1.2.1 h1:YuqqRuaqsGV71BV/nm9xlI0MKUv4QC54jQnBChWbGnI=
-lukechampine.com/blake3 v1.2.1/go.mod h1:0OFRp7fBtAylGVCO40o87sbupkyIGgbpv1+M1k1LM6k=
+lukechampine.com/blake3 v1.3.0 h1:sJ3XhFINmHSrYCgl958hscfIa3bw8x4DqMP3u1YvoYE=
+lukechampine.com/blake3 v1.3.0/go.mod h1:0OFRp7fBtAylGVCO40o87sbupkyIGgbpv1+M1k1LM6k=
 sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
--- a/infra/conf/api.go
+++ b/infra/conf/api.go
@@ -14,6 +14,7 @@ import (

 type APIConfig struct {
 	Tag      string   `json:"tag"`
+	Listen   string   `json:"listen"`
 	Services []string `json:"services"`
 }

@@ -42,6 +43,7 @@ func (c *APIConfig) Build() (*commander.Config, error) {

 	return &commander.Config{
 		Tag:     c.Tag,
+		Listen:  c.Listen,
 		Service: services,
 	}, nil
 }
--- a/infra/conf/grpc.go
+++ b/infra/conf/grpc.go
@@ -6,7 +6,8 @@ import (
 )

 type GRPCConfig struct {
-	ServiceName         string `json:"serviceName" `
+	Authority           string `json:"authority"`
+	ServiceName         string `json:"serviceName"`
 	MultiMode           bool   `json:"multiMode"`
 	IdleTimeout         int32  `json:"idle_timeout"`
 	HealthCheckTimeout  int32  `json:"health_check_timeout"`
@@ -28,6 +29,7 @@ func (g *GRPCConfig) Build() (proto.Message, error) {
 	}

 	return &grpc.Config{
+		Authority:           g.Authority,
 		ServiceName:         g.ServiceName,
 		MultiMode:           g.MultiMode,
 		IdleTimeout:         g.IdleTimeout,
--- a/infra/conf/router.go
+++ b/infra/conf/router.go
@@ -8,8 +8,8 @@ import (

 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/platform/filesystem"
+	"github.com/xtls/xray-core/common/serial"
 	"google.golang.org/protobuf/proto"
 )

@@ -139,6 +139,7 @@ func (c *RouterConfig) Build() (*router.Config, error) {
 }

 type RouterRule struct {
+	RuleTag     string `json:"ruleTag"`
 	Type        string `json:"type"`
 	OutboundTag string `json:"outboundTag"`
 	BalancerTag string `json:"balancerTag"`
@@ -560,6 +561,7 @@ func parseFieldRule(msg json.RawMessage) (*router.RoutingRule, error) {
 	}

 	rule := new(router.RoutingRule)
+	rule.RuleTag = rawFieldRule.RuleTag
 	switch {
 	case len(rawFieldRule.OutboundTag) > 0:
 		rule.TargetTag = &router.RoutingRule_Tag{
@@ -663,55 +665,5 @@ func ParseRule(msg json.RawMessage) (*router.RoutingRule, error) {
 		}
 		return fieldrule, nil
 	}
-	if strings.EqualFold(rawRule.Type, "chinaip") {
-		chinaiprule, err := parseChinaIPRule(msg)
-		if err != nil {
-			return nil, newError("invalid chinaip rule").Base(err)
-		}
-		return chinaiprule, nil
-	}
-	if strings.EqualFold(rawRule.Type, "chinasites") {
-		chinasitesrule, err := parseChinaSitesRule(msg)
-		if err != nil {
-			return nil, newError("invalid chinasites rule").Base(err)
-		}
-		return chinasitesrule, nil
-	}
 	return nil, newError("unknown router rule type: ", rawRule.Type)
 }
-
-func parseChinaIPRule(data []byte) (*router.RoutingRule, error) {
-	rawRule := new(RouterRule)
-	err := json.Unmarshal(data, rawRule)
-	if err != nil {
-		return nil, newError("invalid router rule").Base(err)
-	}
-	chinaIPs, err := loadGeoIP("CN")
-	if err != nil {
-		return nil, newError("failed to load geoip:cn").Base(err)
-	}
-	return &router.RoutingRule{
-		TargetTag: &router.RoutingRule_Tag{
-			Tag: rawRule.OutboundTag,
-		},
-		Cidr: chinaIPs,
-	}, nil
-}
-
-func parseChinaSitesRule(data []byte) (*router.RoutingRule, error) {
-	rawRule := new(RouterRule)
-	err := json.Unmarshal(data, rawRule)
-	if err != nil {
-		return nil, newError("invalid router rule").Base(err).AtError()
-	}
-	domains, err := loadGeositeWithAttr("geosite.dat", "CN")
-	if err != nil {
-		return nil, newError("failed to load geosite:cn.").Base(err)
-	}
-	return &router.RoutingRule{
-		TargetTag: &router.RoutingRule_Tag{
-			Tag: rawRule.OutboundTag,
-		},
-		Domain: domains,
-	}, nil
-}
--- a/infra/conf/router_strategy.go
+++ b/infra/conf/router_strategy.go
@@ -38,7 +38,7 @@ type strategyLeastLoadConfig struct {
 	Baselines []duration.Duration `json:"baselines,omitempty"`
 	// expected nodes count to select
 	Expected int32 `json:"expected,omitempty"`
-	// max acceptable rtt, filter away high delay nodes. defalut 0
+	// max acceptable rtt, filter away high delay nodes. default 0
 	MaxRTT duration.Duration `json:"maxRTT,omitempty"`
 	// acceptable failure rate
 	Tolerance float64 `json:"tolerance,omitempty"`
--- a/infra/conf/router_test.go
+++ b/infra/conf/router_test.go
@@ -97,7 +97,8 @@ func TestRouterConfig(t *testing.T) {
 				"balancers": [
 					{
 						"tag": "b1",
-						"selector": ["test"]
+						"selector": ["test"],
+						"fallbackTag": "fall"
 					},
 					{
 						"tag": "b2",
@@ -137,6 +138,7 @@ func TestRouterConfig(t *testing.T) {
 						Tag:              "b1",
 						OutboundSelector: []string{"test"},
 						Strategy:         "random",
+						FallbackTag:      "fall",
 					},
 					{
 						Tag:              "b2",
--- a/infra/conf/transport.go
+++ b/infra/conf/transport.go
@@ -7,14 +7,15 @@ import (
 )

 type TransportConfig struct {
-	TCPConfig  *TCPConfig          `json:"tcpSettings"`
-	KCPConfig  *KCPConfig          `json:"kcpSettings"`
-	WSConfig   *WebSocketConfig    `json:"wsSettings"`
-	HTTPConfig *HTTPConfig         `json:"httpSettings"`
-	DSConfig   *DomainSocketConfig `json:"dsSettings"`
-	QUICConfig *QUICConfig         `json:"quicSettings"`
-	GRPCConfig *GRPCConfig         `json:"grpcSettings"`
-	GUNConfig  *GRPCConfig         `json:"gunSettings"`
+	TCPConfig         *TCPConfig          `json:"tcpSettings"`
+	KCPConfig         *KCPConfig          `json:"kcpSettings"`
+	WSConfig          *WebSocketConfig    `json:"wsSettings"`
+	HTTPConfig        *HTTPConfig         `json:"httpSettings"`
+	DSConfig          *DomainSocketConfig `json:"dsSettings"`
+	QUICConfig        *QUICConfig         `json:"quicSettings"`
+	GRPCConfig        *GRPCConfig         `json:"grpcSettings"`
+	GUNConfig         *GRPCConfig         `json:"gunSettings"`
+	HTTPUPGRADEConfig *HttpUpgradeConfig  `json:"httpupgradeSettings"`
 }

 // Build implements Buildable.
@@ -101,5 +102,16 @@ func (c *TransportConfig) Build() (*global.Config, error) {
 		})
 	}

+	if c.HTTPUPGRADEConfig != nil {
+		hs, err := c.HTTPUPGRADEConfig.Build()
+		if err != nil {
+			return nil, newError("failed to build HttpUpgrade config").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "httpupgrade",
+			Settings:     serial.ToTypedMessage(hs),
+		})
+	}
+
 	return config, nil
 }
--- a/infra/conf/transport_internet.go
+++ b/infra/conf/transport_internet.go
@@ -19,6 +19,7 @@ import (
 	"github.com/xtls/xray-core/transport/internet/domainsocket"
 	httpheader "github.com/xtls/xray-core/transport/internet/headers/http"
 	"github.com/xtls/xray-core/transport/internet/http"
+	"github.com/xtls/xray-core/transport/internet/httpupgrade"
 	"github.com/xtls/xray-core/transport/internet/kcp"
 	"github.com/xtls/xray-core/transport/internet/quic"
 	"github.com/xtls/xray-core/transport/internet/reality"
@@ -145,6 +146,7 @@ func (c *TCPConfig) Build() (proto.Message, error) {
 }

 type WebSocketConfig struct {
+	Host                string            `json:"host"`
 	Path                string            `json:"path"`
 	Headers             map[string]string `json:"headers"`
 	AcceptProxyProtocol bool              `json:"acceptProxyProtocol"`
@@ -153,13 +155,6 @@ type WebSocketConfig struct {
 // Build implements Buildable.
 func (c *WebSocketConfig) Build() (proto.Message, error) {
 	path := c.Path
-	header := make([]*websocket.Header, 0, 32)
-	for key, value := range c.Headers {
-		header = append(header, &websocket.Header{
-			Key:   key,
-			Value: value,
-		})
-	}
 	var ed uint32
 	if u, err := url.Parse(path); err == nil {
 		if q := u.Query(); q.Get("ed") != "" {
@@ -170,13 +165,58 @@ func (c *WebSocketConfig) Build() (proto.Message, error) {
 			path = u.String()
 		}
 	}
-	config := &websocket.Config{
-		Path:   path,
-		Header: header,
-		Ed:     ed,
+	// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
+	// If we don't do that, http host will be overwritten as address.
+	// Host priority: Host field > headers field > address.
+	if c.Host == "" && c.Headers["host"] != "" {
+		c.Host = c.Headers["host"]
+	} else if c.Host == "" && c.Headers["Host"] != "" {
+		c.Host = c.Headers["Host"]
 	}
-	if c.AcceptProxyProtocol {
-		config.AcceptProxyProtocol = c.AcceptProxyProtocol
+	config := &websocket.Config{
+		Path:                path,
+		Host:                c.Host,
+		Header:              c.Headers,
+		AcceptProxyProtocol: c.AcceptProxyProtocol,
+		Ed:                  ed,
+	}
+	return config, nil
+}
+
+type HttpUpgradeConfig struct {
+	Host                string            `json:"host"`
+	Path                string            `json:"path"`
+	Headers             map[string]string `json:"headers"`
+	AcceptProxyProtocol bool              `json:"acceptProxyProtocol"`
+}
+
+// Build implements Buildable.
+func (c *HttpUpgradeConfig) Build() (proto.Message, error) {
+	path := c.Path
+	var ed uint32
+	if u, err := url.Parse(path); err == nil {
+		if q := u.Query(); q.Get("ed") != "" {
+			Ed, _ := strconv.Atoi(q.Get("ed"))
+			ed = uint32(Ed)
+			q.Del("ed")
+			u.RawQuery = q.Encode()
+			path = u.String()
+		}
+	}
+	// If http host is not set in the Host field, but in headers field, we add it to Host Field here.
+	// If we don't do that, http host will be overwritten as address.
+	// Host priority: Host field > headers field > address.
+	if c.Host == "" && c.Headers["host"] != "" {
+		c.Host = c.Headers["host"]
+	} else if c.Host == "" && c.Headers["Host"] != "" {
+		c.Host = c.Headers["Host"]
+	}
+	config := &httpupgrade.Config{
+		Path:                path,
+		Host:                c.Host,
+		Header:              c.Headers,
+		AcceptProxyProtocol: c.AcceptProxyProtocol,
+		Ed:                  ed,
 	}
 	return config, nil
 }
@@ -352,7 +392,6 @@ type TLSConfig struct {
 	MinVersion                           string           `json:"minVersion"`
 	MaxVersion                           string           `json:"maxVersion"`
 	CipherSuites                         string           `json:"cipherSuites"`
-	PreferServerCipherSuites             bool             `json:"preferServerCipherSuites"`
 	Fingerprint                          string           `json:"fingerprint"`
 	RejectUnknownSNI                     bool             `json:"rejectUnknownSni"`
 	PinnedPeerCertificateChainSha256     *[]string        `json:"pinnedPeerCertificateChainSha256"`
@@ -384,7 +423,6 @@ func (c *TLSConfig) Build() (proto.Message, error) {
 	config.MinVersion = c.MinVersion
 	config.MaxVersion = c.MaxVersion
 	config.CipherSuites = c.CipherSuites
-	config.PreferServerCipherSuites = c.PreferServerCipherSuites
 	config.Fingerprint = strings.ToLower(c.Fingerprint)
 	if config.Fingerprint != "" && tls.GetFingerprint(config.Fingerprint) == nil {
 		return nil, newError(`unknown fingerprint: `, config.Fingerprint)
@@ -606,6 +644,8 @@ func (p TransportProtocol) Build() (string, error) {
 		return "quic", nil
 	case "grpc", "gun":
 		return "grpc", nil
+	case "httpupgrade":
+		return "httpupgrade", nil
 	default:
 		return "", newError("Config: unknown transport protocol: ", p)
 	}
@@ -706,19 +746,20 @@ func (c *SocketConfig) Build() (*internet.SocketConfig, error) {
 }

 type StreamConfig struct {
-	Network         *TransportProtocol  `json:"network"`
-	Security        string              `json:"security"`
-	TLSSettings     *TLSConfig          `json:"tlsSettings"`
-	REALITYSettings *REALITYConfig      `json:"realitySettings"`
-	TCPSettings     *TCPConfig          `json:"tcpSettings"`
-	KCPSettings     *KCPConfig          `json:"kcpSettings"`
-	WSSettings      *WebSocketConfig    `json:"wsSettings"`
-	HTTPSettings    *HTTPConfig         `json:"httpSettings"`
-	DSSettings      *DomainSocketConfig `json:"dsSettings"`
-	QUICSettings    *QUICConfig         `json:"quicSettings"`
-	SocketSettings  *SocketConfig       `json:"sockopt"`
-	GRPCConfig      *GRPCConfig         `json:"grpcSettings"`
-	GUNConfig       *GRPCConfig         `json:"gunSettings"`
+	Network             *TransportProtocol  `json:"network"`
+	Security            string              `json:"security"`
+	TLSSettings         *TLSConfig          `json:"tlsSettings"`
+	REALITYSettings     *REALITYConfig      `json:"realitySettings"`
+	TCPSettings         *TCPConfig          `json:"tcpSettings"`
+	KCPSettings         *KCPConfig          `json:"kcpSettings"`
+	WSSettings          *WebSocketConfig    `json:"wsSettings"`
+	HTTPSettings        *HTTPConfig         `json:"httpSettings"`
+	DSSettings          *DomainSocketConfig `json:"dsSettings"`
+	QUICSettings        *QUICConfig         `json:"quicSettings"`
+	SocketSettings      *SocketConfig       `json:"sockopt"`
+	GRPCConfig          *GRPCConfig         `json:"grpcSettings"`
+	GUNConfig           *GRPCConfig         `json:"gunSettings"`
+	HTTPUPGRADESettings *HttpUpgradeConfig  `json:"httpupgradeSettings"`
 }

 // Build implements Buildable.
@@ -839,6 +880,16 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 			Settings:     serial.ToTypedMessage(gs),
 		})
 	}
+	if c.HTTPUPGRADESettings != nil {
+		hs, err := c.HTTPUPGRADESettings.Build()
+		if err != nil {
+			return nil, newError("Failed to build HttpUpgrade config.").Base(err)
+		}
+		config.TransportSettings = append(config.TransportSettings, &internet.TransportConfig{
+			ProtocolName: "httpupgrade",
+			Settings:     serial.ToTypedMessage(hs),
+		})
+	}
 	if c.SocketSettings != nil {
 		ss, err := c.SocketSettings.Build()
 		if err != nil {
--- a/infra/conf/xray.go
+++ b/infra/conf/xray.go
@@ -11,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/app/dispatcher"
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/app/stats"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/transport/internet"
@@ -279,7 +280,7 @@ func (c *InboundDetourConfig) Build() (*core.InboundHandlerConfig, error) {

 type OutboundDetourConfig struct {
 	Protocol      string           `json:"protocol"`
-	SendThrough   *Address         `json:"sendThrough"`
+	SendThrough   *string          `json:"sendThrough"`
 	Tag           string           `json:"tag"`
 	Settings      *json.RawMessage `json:"settings"`
 	StreamSetting *StreamConfig    `json:"streamSettings"`
@@ -305,9 +306,14 @@ func (c *OutboundDetourConfig) Build() (*core.OutboundHandlerConfig, error) {
 	}

 	if c.SendThrough != nil {
-		address := c.SendThrough
-		if address.Family().IsDomain() {
-			return nil, newError("unable to send through: " + address.String())
+		address := ParseSendThough(c.SendThrough)
+		//Check if CIDR exists
+		if strings.Contains(*c.SendThrough, "/") {
+			senderSettings.ViaCidr = strings.Split(*c.SendThrough, "/")[1]
+		} else {
+			if address.Family().IsDomain() {
+				return nil, newError("unable to send through: " + address.String())
+			}
 		}
 		senderSettings.Via = address.Build()
 	}
@@ -397,19 +403,19 @@ type Config struct {
 	// and should not be used.
 	OutboundDetours []OutboundDetourConfig `json:"outboundDetour"`

-	LogConfig       *LogConfig             `json:"log"`
-	RouterConfig    *RouterConfig          `json:"routing"`
-	DNSConfig       *DNSConfig             `json:"dns"`
-	InboundConfigs  []InboundDetourConfig  `json:"inbounds"`
-	OutboundConfigs []OutboundDetourConfig `json:"outbounds"`
-	Transport       *TransportConfig       `json:"transport"`
-	Policy          *PolicyConfig          `json:"policy"`
-	API             *APIConfig             `json:"api"`
-	Metrics         *MetricsConfig         `json:"metrics"`
-	Stats           *StatsConfig           `json:"stats"`
-	Reverse         *ReverseConfig         `json:"reverse"`
-	FakeDNS         *FakeDNSConfig         `json:"fakeDns"`
-	Observatory     *ObservatoryConfig     `json:"observatory"`
+	LogConfig        *LogConfig              `json:"log"`
+	RouterConfig     *RouterConfig           `json:"routing"`
+	DNSConfig        *DNSConfig              `json:"dns"`
+	InboundConfigs   []InboundDetourConfig   `json:"inbounds"`
+	OutboundConfigs  []OutboundDetourConfig  `json:"outbounds"`
+	Transport        *TransportConfig        `json:"transport"`
+	Policy           *PolicyConfig           `json:"policy"`
+	API              *APIConfig              `json:"api"`
+	Metrics          *MetricsConfig          `json:"metrics"`
+	Stats            *StatsConfig            `json:"stats"`
+	Reverse          *ReverseConfig          `json:"reverse"`
+	FakeDNS          *FakeDNSConfig          `json:"fakeDns"`
+	Observatory      *ObservatoryConfig      `json:"observatory"`
 	BurstObservatory *BurstObservatoryConfig `json:"burstObservatory"`
 }

@@ -475,6 +481,10 @@ func (c *Config) Override(o *Config, fn string) {
 		c.Observatory = o.Observatory
 	}

+	if o.BurstObservatory != nil {
+		c.BurstObservatory = o.BurstObservatory
+	}
+
 	// deprecated attrs... keep them for now
 	if o.InboundConfig != nil {
 		c.InboundConfig = o.InboundConfig
@@ -544,6 +554,9 @@ func applyTransportConfig(s *StreamConfig, t *TransportConfig) {
 	if s.DSSettings == nil {
 		s.DSSettings = t.DSConfig
 	}
+	if s.HTTPUPGRADESettings == nil {
+		s.HTTPUPGRADESettings = t.HTTPUPGRADEConfig
+	}
 }

 // Build implements Buildable.
@@ -714,3 +727,10 @@ func (c *Config) Build() (*core.Config, error) {

 	return config, nil
 }
+
+// Convert string to Address.
+func ParseSendThough(Addr *string) *Address {
+	var addr Address
+	addr.Address = net.ParseAddress(strings.Split(*Addr, "/")[0])
+	return &addr
+}
--- a/infra/conf/xray_test.go
+++ b/infra/conf/xray_test.go
@@ -236,11 +236,9 @@ func TestXrayConfig(t *testing.T) {
 									{
 										ProtocolName: "websocket",
 										Settings: serial.ToTypedMessage(&websocket.Config{
-											Header: []*websocket.Header{
-												{
-													Key:   "host",
-													Value: "example.domain",
-												},
+											Host: "example.domain",
+											Header: map[string]string{
+												"host": "example.domain",
 											},
 										}),
 									},
@@ -291,11 +289,9 @@ func TestXrayConfig(t *testing.T) {
 									{
 										ProtocolName: "websocket",
 										Settings: serial.ToTypedMessage(&websocket.Config{
-											Header: []*websocket.Header{
-												{
-													Key:   "host",
-													Value: "example.domain",
-												},
+											Host: "example.domain",
+											Header: map[string]string{
+												"host": "example.domain",
 											},
 										}),
 									},
--- a/main/commands/all/api/api.go
+++ b/main/commands/all/api/api.go
@@ -21,5 +21,8 @@ var CmdAPI = &base.Command{
 		cmdAddOutbounds,
 		cmdRemoveInbounds,
 		cmdRemoveOutbounds,
+		cmdAddRules,
+		cmdRemoveRules,
+		cmdSourceIpBlock,
 	},
 }
--- a/main/commands/all/api/balancer_info.go
+++ b/main/commands/all/api/balancer_info.go
@@ -43,12 +43,16 @@ Example:
 func executeBalancerInfo(cmd *base.Command, args []string) {
 	setSharedFlags(cmd)
 	cmd.Flag.Parse(args)
+	unnamedArgs := cmd.Flag.Args()
+	if len(unnamedArgs) == 0 {
+		fmt.Println("set balancer tag")
+		unnamedArgs = []string{""}
+	}

 	conn, ctx, close := dialAPIServer()
 	defer close()
-
 	client := routerService.NewRoutingServiceClient(conn)
-	r := &routerService.GetBalancerInfoRequest{Tag: args[0]}
+	r := &routerService.GetBalancerInfoRequest{Tag: unnamedArgs[0]}
 	resp, err := client.GetBalancerInfo(ctx, r)
 	if err != nil {
 		base.Fatalf("failed to get health information: %s", err)
@@ -75,9 +79,10 @@ func showBalancerInfo(b *routerService.BalancerMsg) {
 	}
 	// Selects
 	sb.WriteString("  - Selects:\n")
-
-	for i, o := range b.PrincipleTarget.Tag {
-		writeRow(sb, tableIndent, i+1, []string{o}, nil)
+	if b.PrincipleTarget != nil {
+		for i, o := range b.PrincipleTarget.Tag {
+			writeRow(sb, tableIndent, i+1, []string{o}, nil)
+		}
 	}
 	os.Stdout.WriteString(sb.String())
 }
--- a/main/commands/all/api/rules_add.go
+++ b/main/commands/all/api/rules_add.go
@@ -0,0 +1,88 @@
+package api
+
+import (
+	"fmt"
+
+	routerService "github.com/xtls/xray-core/app/router/command"
+	cserial "github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/infra/conf"
+	"github.com/xtls/xray-core/infra/conf/serial"
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdAddRules = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} api adrules [--server=127.0.0.1:8080] <c1.json> [c2.json]...",
+	Short:       "Add routing rules",
+	Long: `
+Add routing rules to Xray.
+Arguments:
+	-s, -server 
+		The API server address. Default 127.0.0.1:8080
+	-t, -timeout
+		Timeout seconds to call API. Default 3
+	-append
+		append or replace config. Default false
+
+Example:
+    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080 c1.json c2.json
+`,
+	Run: executeAddRules,
+}
+
+func executeAddRules(cmd *base.Command, args []string) {
+	var (
+		shouldAppend bool
+	)
+	setSharedFlags(cmd)
+	cmd.Flag.BoolVar(&shouldAppend, "append", false, "")
+	cmd.Flag.Parse(args)
+
+	unnamedArgs := cmd.Flag.Args()
+	if len(unnamedArgs) == 0 {
+		fmt.Println("reading from stdin:")
+		unnamedArgs = []string{"stdin:"}
+	}
+	conn, ctx, close := dialAPIServer()
+	defer close()
+
+	client := routerService.NewRoutingServiceClient(conn)
+
+	rcs := make([]conf.RouterConfig, 0)
+	for _, arg := range unnamedArgs {
+		r, err := loadArg(arg)
+		if err != nil {
+			base.Fatalf("failed to load %s: %s", arg, err)
+		}
+		conf, err := serial.DecodeJSONConfig(r)
+		if err != nil {
+			base.Fatalf("failed to decode %s: %s", arg, err)
+		}
+		rcs = append(rcs, *conf.RouterConfig)
+	}
+	if len(rcs) == 0 {
+		base.Fatalf("no valid rule found in config")
+	}
+	for _, in := range rcs {
+
+		config, err := in.Build()
+		if err != nil {
+			base.Fatalf("failed to build conf: %s", err)
+		}
+		tmsg := cserial.ToTypedMessage(config)
+		if tmsg == nil {
+			base.Fatalf("failed to format config to TypedMessage.")
+		}
+
+		ra := &routerService.AddRuleRequest{
+			Config:       tmsg,
+			ShouldAppend: shouldAppend,
+		}
+		resp, err := client.AddRule(ctx, ra)
+		if err != nil {
+			base.Fatalf("failed to perform AddRule: %s", err)
+		}
+		showJSONResponse(resp)
+	}
+
+}
--- a/main/commands/all/api/rules_remove.go
+++ b/main/commands/all/api/rules_remove.go
@@ -0,0 +1,55 @@
+package api
+
+import (
+	"fmt"
+
+	routerService "github.com/xtls/xray-core/app/router/command"
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdRemoveRules = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} api rmrules [--server=127.0.0.1:8080] ruleTag1 ruleTag2...",
+	Short:       "Remove routing rules by ruleTag",
+	Long: `
+Remove routing rules by ruleTag from Xray.
+Arguments:
+	-s, -server 
+		The API server address. Default 127.0.0.1:8080
+	-t, -timeout
+		Timeout seconds to call API. Default 3
+Example:
+    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080 ruleTag1 ruleTag2
+`,
+	Run: executeRemoveRules,
+}
+
+func executeRemoveRules(cmd *base.Command, args []string) {
+	setSharedFlags(cmd)
+	cmd.Flag.Parse(args)
+	ruleTags := cmd.Flag.Args()
+	if len(ruleTags) == 0 {
+		fmt.Println("reading from stdin:")
+		ruleTags = []string{"stdin:"}
+	}
+	conn, ctx, close := dialAPIServer()
+	defer close()
+
+	client := routerService.NewRoutingServiceClient(conn)
+
+	if len(ruleTags) == 0 {
+		base.Fatalf("no valid ruleTag input")
+	}
+	for _, tag := range ruleTags {
+
+		rr := &routerService.RemoveRuleRequest{
+			RuleTag: tag,
+		}
+		resp, err := client.RemoveRule(ctx, rr)
+		if err != nil {
+			base.Fatalf("failed to perform RemoveRule: %s", err)
+		}
+		showJSONResponse(resp)
+	}
+
+}
--- a/main/commands/all/api/shared.go
+++ b/main/commands/all/api/shared.go
@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"fmt"
-	"google.golang.org/protobuf/encoding/protojson"
 	"io"
 	"net/http"
 	"net/url"
@@ -13,6 +12,9 @@ import (
 	"strings"
 	"time"

+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/protobuf/encoding/protojson"
+
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/main/commands/base"
 	"google.golang.org/grpc"
@@ -37,7 +39,7 @@ func setSharedFlags(cmd *base.Command) {

 func dialAPIServer() (conn *grpc.ClientConn, ctx context.Context, close func()) {
 	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(apiTimeout)*time.Second)
-	conn, err := grpc.DialContext(ctx, apiServerAddrPtr, grpc.WithInsecure(), grpc.WithBlock())
+	conn, err := grpc.DialContext(ctx, apiServerAddrPtr, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithBlock())
 	if err != nil {
 		base.Fatalf("failed to dial %s", apiServerAddrPtr)
 	}
--- a/main/commands/all/api/source_ip_block.go
+++ b/main/commands/all/api/source_ip_block.go
@@ -0,0 +1,132 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	routerService "github.com/xtls/xray-core/app/router/command"
+	cserial "github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/infra/conf/serial"
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdSourceIpBlock = &base.Command{
+	CustomFlags: true,
+	UsageLine:   "{{.Exec}} api sib [--server=127.0.0.1:8080] -outbound=blocked -inbound=socks 1.2.3.4",
+	Short:       "Drop connections by source ip",
+	Long: `
+Drop connections by source ip.
+Arguments:
+	-s, -server 
+		The API server address. Default 127.0.0.1:8080
+	-t, -timeout
+		Timeout seconds to call API. Default 3
+	-outbound
+		route traffic to specific outbound.
+	-inbound
+		target traffig from specific inbound.
+	-ruletag
+		set ruleTag. Default sourceIpBlock
+	-reset
+		remove ruletag and apply new source IPs. Default false
+
+	Example:
+    {{.Exec}} {{.LongName}} --server=127.0.0.1:8080 c1.json c2.json
+`,
+	Run: executeSourceIpBlock,
+}
+
+func executeSourceIpBlock(cmd *base.Command, args []string) {
+	var (
+		inbound  string
+		outbound string
+		ruletag  string
+		reset    bool
+	)
+	setSharedFlags(cmd)
+	cmd.Flag.StringVar(&inbound, "inbound", "", "")
+	cmd.Flag.StringVar(&outbound, "outbound", "", "")
+	cmd.Flag.StringVar(&ruletag, "ruletag", "sourceIpBlock", "")
+	cmd.Flag.BoolVar(&reset, "reset", false, "")
+
+	cmd.Flag.Parse(args)
+
+	unnamedArgs := cmd.Flag.Args()
+	if len(unnamedArgs) == 0 {
+		fmt.Println("reading from stdin:")
+		unnamedArgs = []string{"stdin:"}
+	}
+	conn, ctx, close := dialAPIServer()
+	defer close()
+
+	client := routerService.NewRoutingServiceClient(conn)
+
+	jsonIps, err := json.Marshal(unnamedArgs)
+	if err != nil {
+		fmt.Println("Error marshaling JSON:", err)
+		return
+	}
+
+	jsonInbound, err := json.Marshal([]string{inbound})
+	if inbound == "" {
+		jsonInbound, err = json.Marshal([]string{})
+	}
+	if err != nil {
+		fmt.Println("Error marshaling JSON:", err)
+		return
+	}
+	stringConfig := fmt.Sprintf(`
+	{
+		"routing": {
+			"rules": [
+			  {
+				"ruleTag" : "%s",
+				"inboundTag": %s,		
+				"outboundTag": "%s",
+				"type": "field",
+				"source": %s
+			  }
+			]
+		  }
+	  }
+	  
+	`, ruletag, string(jsonInbound), outbound, string(jsonIps))
+
+	conf, err := serial.DecodeJSONConfig(strings.NewReader(stringConfig))
+	if err != nil {
+		base.Fatalf("failed to decode : %s", err)
+	}
+	rc := *conf.RouterConfig
+
+	config, err := rc.Build()
+	if err != nil {
+		base.Fatalf("failed to build conf: %s", err)
+	}
+	tmsg := cserial.ToTypedMessage(config)
+	if tmsg == nil {
+		base.Fatalf("failed to format config to TypedMessage.")
+	}
+
+	if reset {
+		rr := &routerService.RemoveRuleRequest{
+			RuleTag: ruletag,
+		}
+		resp, err := client.RemoveRule(ctx, rr)
+		if err != nil {
+			base.Fatalf("failed to perform RemoveRule: %s", err)
+		}
+		showJSONResponse(resp)
+
+	}
+	ra := &routerService.AddRuleRequest{
+		Config:       tmsg,
+		ShouldAppend: true,
+	}
+	resp, err := client.AddRule(ctx, ra)
+	if err != nil {
+		base.Fatalf("failed to perform AddRule: %s", err)
+	}
+	showJSONResponse(resp)
+
+}
--- a/main/commands/all/tls/certchainhash.go
+++ b/main/commands/all/tls/certchainhash.go
@@ -3,7 +3,7 @@ package tls
 import (
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"os"

 	"github.com/xtls/xray-core/main/commands/base"
 	"github.com/xtls/xray-core/transport/internet/tls"
@@ -30,12 +30,11 @@ func executeCertChainHash(cmd *base.Command, args []string) {
 		fmt.Println(err)
 		return
 	}
-	certContent, err := ioutil.ReadFile(*input)
+	certContent, err := os.ReadFile(*input)
 	if err != nil {
 		fmt.Println(err)
 		return
 	}
 	certChainHashB64 := tls.CalculatePEMCertChainSHA256Hash(certContent)
 	fmt.Println(certChainHashB64)
-	return
 }
--- a/main/commands/all/tls/ech.go
+++ b/main/commands/all/tls/ech.go
@@ -0,0 +1,69 @@
+package tls
+
+import (
+	"encoding/json"
+	"encoding/pem"
+	"os"
+	"strings"
+
+	"github.com/OmarTariq612/goech"
+	"github.com/cloudflare/circl/hpke"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdECH = &base.Command{
+	UsageLine: `{{.Exec}} tls ech [--serverName (string)] [--json]`,
+	Short:     `Generate TLS-ECH certificates`,
+	Long: `
+Generate TLS-ECH certificates.
+
+Set serverName to your custom string: {{.Exec}} tls ech --serverName (string)
+Generate into json format: {{.Exec}} tls ech --json
+`, // Enable PQ signature schemes: {{.Exec}} tls ech --pq-signature-schemes-enabled
+}
+
+func init() {
+	cmdECH.Run = executeECH
+}
+
+var input_pqSignatureSchemesEnabled = cmdECH.Flag.Bool("pqSignatureSchemesEnabled", false, "")
+var input_serverName = cmdECH.Flag.String("serverName", "cloudflare-ech.com", "")
+var input_json = cmdECH.Flag.Bool("json", false, "True == turn on json output")
+
+func executeECH(cmd *base.Command, args []string) {
+	var kem hpke.KEM
+
+	if *input_pqSignatureSchemesEnabled {
+		kem = hpke.KEM_X25519_KYBER768_DRAFT00
+	} else {
+		kem = hpke.KEM_X25519_HKDF_SHA256
+	}
+
+	echKeySet, err := goech.GenerateECHKeySet(0, *input_serverName, kem)
+	common.Must(err)
+
+	configBuffer, _ := echKeySet.ECHConfig.MarshalBinary()
+	keyBuffer, _ := echKeySet.MarshalBinary()
+
+	configPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH CONFIGS", Bytes: configBuffer}))
+	keyPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH KEYS", Bytes: keyBuffer}))
+	if *input_json {
+		jECHConfigs := map[string]interface{}{
+			"configs": strings.Split(strings.TrimSpace(string(configPEM)), "\n"),
+		}
+		jECHKey := map[string]interface{}{
+			"key": strings.Split(strings.TrimSpace(string(keyPEM)), "\n"),
+		}
+
+		for _, i := range []map[string]interface{}{jECHConfigs, jECHKey} {
+			content, err := json.MarshalIndent(i, "", "  ")
+			common.Must(err)
+			os.Stdout.Write(content)
+			os.Stdout.WriteString("\n")
+		}
+	} else {
+		os.Stdout.WriteString(configPEM)
+		os.Stdout.WriteString(keyPEM)
+	}
+}
--- a/main/commands/all/tls/tls.go
+++ b/main/commands/all/tls/tls.go
@@ -14,5 +14,6 @@ var CmdTLS = &base.Command{
 		cmdCert,
 		cmdPing,
 		cmdCertChainHash,
+		cmdECH,
 	},
 }
--- a/main/distro/all/all.go
+++ b/main/distro/all/all.go
@@ -53,6 +53,7 @@ import (
 	_ "github.com/xtls/xray-core/transport/internet/domainsocket"
 	_ "github.com/xtls/xray-core/transport/internet/grpc"
 	_ "github.com/xtls/xray-core/transport/internet/http"
+	_ "github.com/xtls/xray-core/transport/internet/httpupgrade"
 	_ "github.com/xtls/xray-core/transport/internet/kcp"
 	_ "github.com/xtls/xray-core/transport/internet/quic"
 	_ "github.com/xtls/xray-core/transport/internet/reality"
--- a/proxy/blackhole/blackhole.go
+++ b/proxy/blackhole/blackhole.go
@@ -31,10 +31,9 @@ func New(ctx context.Context, config *Config) (*Handler, error) {

 // Process implements OutboundHandler.Dispatch().
 func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound != nil {
-		outbound.Name = "blackhole"
-	}
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	ob.Name = "blackhole"
 	
 	nBytes := h.response.WriteTo(link.Writer)
 	if nBytes > 0 {
--- a/proxy/blackhole/blackhole_test.go
+++ b/proxy/blackhole/blackhole_test.go
@@ -7,13 +7,15 @@ import (
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/serial"
+	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/proxy/blackhole"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
 )

 func TestBlackholeHTTPResponse(t *testing.T) {
-	handler, err := blackhole.New(context.Background(), &blackhole.Config{
+	ctx := session.ContextWithOutbounds(context.Background(), []*session.Outbound{{}})
+	handler, err := blackhole.New(ctx, &blackhole.Config{
 		Response: serial.ToTypedMessage(&blackhole.HTTPResponse{}),
 	})
 	common.Must(err)
@@ -32,7 +34,7 @@ func TestBlackholeHTTPResponse(t *testing.T) {
 		Reader: reader,
 		Writer: writer,
 	}
-	common.Must(handler.Process(context.Background(), &link, nil))
+	common.Must(handler.Process(ctx, &link, nil))
 	common.Must(rerr)
 	if mb.IsEmpty() {
 		t.Error("expect http response, but nothing")
--- a/proxy/blackhole/config.pb.go
+++ b/proxy/blackhole/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: proxy/blackhole/config.proto

--- a/proxy/dns/config.pb.go
+++ b/proxy/dns/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: proxy/dns/config.proto

--- a/proxy/dns/dns.go
+++ b/proxy/dns/dns.go
@@ -96,15 +96,16 @@ func parseIPQuery(b []byte) (r bool, domain string, id uint16, qType dnsmessage.

 // Process implements proxy.Outbound.
 func (h *Handler) Process(ctx context.Context, link *transport.Link, d internet.Dialer) error {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound == nil || !outbound.Target.IsValid() {
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	if !ob.Target.IsValid() {
 		return newError("invalid outbound")
 	}
-	outbound.Name = "dns"
+	ob.Name = "dns"

-	srcNetwork := outbound.Target.Network
+	srcNetwork := ob.Target.Network

-	dest := outbound.Target
+	dest := ob.Target
 	if h.server.Network != net.Network_Unknown {
 		dest.Network = h.server.Network
 	}
--- a/proxy/dokodemo/config.pb.go
+++ b/proxy/dokodemo/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: proxy/dokodemo/config.proto

--- a/proxy/dokodemo/dokodemo.go
+++ b/proxy/dokodemo/dokodemo.go
@@ -86,10 +86,15 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st

 	destinationOverridden := false
 	if d.config.FollowRedirect {
-		if outbound := session.OutboundFromContext(ctx); outbound != nil && outbound.Target.IsValid() {
-			dest = outbound.Target
-			destinationOverridden = true
-		} else if handshake, ok := conn.(hasHandshakeAddressContext); ok {
+		outbounds := session.OutboundsFromContext(ctx)
+		if len(outbounds) > 0 {
+			ob := outbounds[len(outbounds) - 1]
+			if ob.Target.IsValid() {
+				dest = ob.Target
+				destinationOverridden = true
+			}
+		}
+		if handshake, ok := conn.(hasHandshakeAddressContext); ok && !destinationOverridden {
 			addr := handshake.HandshakeAddressContext(ctx)
 			if addr != nil {
 				dest.Address = addr
@@ -103,7 +108,7 @@ func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn st

 	inbound := session.InboundFromContext(ctx)
 	inbound.Name = "dokodemo-door"
-	inbound.SetCanSpliceCopy(1)
+	inbound.CanSpliceCopy = 1
 	inbound.User = &protocol.MemoryUser{
 		Level: d.config.UserLevel,
 	}
--- a/proxy/freedom/config.pb.go
+++ b/proxy/freedom/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: proxy/freedom/config.proto

--- a/proxy/freedom/freedom.go
+++ b/proxy/freedom/freedom.go
@@ -106,16 +106,16 @@ func isValidAddress(addr *net.IPOrDomain) bool {

 // Process implements proxy.Outbound.
 func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound == nil || !outbound.Target.IsValid() {
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	if !ob.Target.IsValid() {
 		return newError("target not specified.")
 	}
-	outbound.Name = "freedom"
+	ob.Name = "freedom"
+	ob.CanSpliceCopy = 1
 	inbound := session.InboundFromContext(ctx)
-	if inbound != nil {
-		inbound.SetCanSpliceCopy(1)
-	}
-	destination := outbound.Target
+
+	destination := ob.Target
 	UDPOverride := net.UDPDestination(nil, 0)
 	if h.config.DestinationOverride != nil {
 		server := h.config.DestinationOverride.Server
@@ -219,10 +219,12 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
 		if destination.Network == net.Network_TCP {
 			var writeConn net.Conn
+			var inTimer *signal.ActivityTimer
 			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)
+			return proxy.CopyRawConnIfExist(ctx, conn, writeConn, link.Writer, timer, inTimer)
 		}
 		reader := NewPacketReader(conn, UDPOverride)
 		if err := buf.Copy(reader, output, buf.UpdateActivity(timer)); err != nil {
@@ -373,6 +375,9 @@ func (f *FragmentWriter) Write(b []byte) (int, error) {
 			return f.writer.Write(b)
 		}
 		recordLen := 5 + ((int(b[3]) << 8) | int(b[4]))
+		if len(b) < recordLen { // maybe already fragmented somehow
+			return f.writer.Write(b)
+		}
 		data := b[5:recordLen]
 		buf := make([]byte, 1024)
 		for from := 0; ; {
--- a/proxy/http/client.go
+++ b/proxy/http/client.go
@@ -69,16 +69,14 @@ func NewClient(ctx context.Context, config *ClientConfig) (*Client, error) {

 // Process implements proxy.Outbound.Process. We first create a socket tunnel via HTTP CONNECT method, then redirect all inbound traffic to that tunnel.
 func (c *Client) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound == nil || !outbound.Target.IsValid() {
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]
+	if !ob.Target.IsValid() {
 		return newError("target not specified.")
 	}
-	outbound.Name = "http"
-	inbound := session.InboundFromContext(ctx)
-	if inbound != nil {
-		inbound.SetCanSpliceCopy(2)
-	}
-	target := outbound.Target
+	ob.Name = "http"
+	ob.CanSpliceCopy = 2
+	target := ob.Target
 	targetAddr := target.NetAddr()

 	if target.Network == net.Network_UDP {
@@ -175,9 +173,10 @@ func fillRequestHeader(ctx context.Context, header []*Header) ([]*Header, error)
 	}

 	inbound := session.InboundFromContext(ctx)
-	outbound := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds) - 1]

-	if inbound == nil || outbound == nil {
+	if inbound == nil || ob == nil {
 		return nil, newError("missing inbound or outbound metadata from context")
 	}

@@ -186,7 +185,7 @@ func fillRequestHeader(ctx context.Context, header []*Header) ([]*Header, error)
 		Target net.Destination
 	}{
 		Source: inbound.Source,
-		Target: outbound.Target,
+		Target: ob.Target,
 	}

 	filled := make([]*Header, len(header))
--- a/proxy/http/config.pb.go
+++ b/proxy/http/config.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v4.23.1
 // source: proxy/http/config.proto

--- a/proxy/http/server.go
+++ b/proxy/http/server.go
@@ -85,7 +85,7 @@ type readerOnly struct {
 func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher) error {
 	inbound := session.InboundFromContext(ctx)
 	inbound.Name = "http"
-	inbound.SetCanSpliceCopy(2)
+	inbound.CanSpliceCopy = 2
 	inbound.User = &protocol.MemoryUser{
 		Level: s.config.UserLevel,
 	}
--- a/Show More
+++ b/Show More