v1.8.19

Closes https://github.com/XTLS/Xray-core/issues/3456

Co-authored-by: Fangliding <Fangliding.fshxy@outlook.com>
Co-authored-by: mmmray <142015632+mmmray@users.noreply.github.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -9,36 +9,81 @@ body:
       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 provided the complete config and logs, rather than just providing the truncated parts based on my own judgment.
+          required: true
         - label: I searched issues and did not find any similar issues.
           required: true
-  - type: textarea
+  - type: input
     attributes:
       label: Version
-      description: Xray-core version
+      description: Version of Xray-core
-      render: shell
+    validations:
+      required: true
   - type: textarea
     attributes:
       label: Description
-      description: Please provide a detailed description of the bug. And information that you consider valuable.
+      description: Please provide a detailed description of the error. And the information you think valuable.
     validations:
       required: true
   - type: textarea
     attributes:
-      label: Reproduction
+      label: Reproduction Method
       description: |-
-        Provide method to reproduce the bug.
+        Based on the configuration you provided below, provide the method to reproduce the bug.
-        Please provide config that can reproduce the problem, including both the server and client.
+    validations:
-        Do not paste a large exported config here. Removing unnecessary inbounds, outbounds, route rules, and options. This cloud help us locate the problem if you really want to get help.
+      required: true
-        Even if you are using a GUI/script/panel, please follow the above requirements.
+  - type: markdown
-        DO NOT just write "I'm using xxx GUI/ xxx panel" instead of providing config. We do not have the energy or obligation to find the software and spend time reproducing according to the description.
+    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 and dnsLog to true 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: log
+      label: Server config
-      description: |-
+      value: |-
-        Set the log level to debug.
+        <details><pre><code>
-        Please Restart Xray-core, and then follow the reproduction method to reduce irrelevant parts in log.
+
-        Remember to remove personal information such as UUID, IP.
+        </code></pre></details>
-        Provid complete log, DO NOT just paste the the parts that you think necessary based on your own judgment.
+    validations:
-      render: shell
+      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

.github/ISSUE_TEMPLATE/bug_report_zh.yml

@@ -9,13 +9,16 @@ body:
       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: 我提供了完整的配置文件和日志，而不是出于自己的判断只给出截取的部分。
+          required: true
         - label: 我搜索了issues，没有发现已提出的类似问题。
           required: true
-  - type: textarea
+  - type: input
     attributes:
       label: 版本
       description: 使用的Xray-core版本
-      render: shell
+    validations:
+      required: true
   - type: textarea
     attributes:
       label: 描述
@@ -26,19 +29,61 @@ body:
     attributes:
       label: 重现方式
       description: |-
-        提供重现BUG方法。
+        基于你下面提供的配置，提供重现BUG方法。
-        请提供可以重现问题的配置文件，包括服务端和客户端
+    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。
-        即使你在使用图形客户端/脚本/面板，也请遵照上述要求。
+        
-        不要直接用“我使用xxx客户端/xxx面板”替代config，我们没有精力也没有义务去找到项目再花时间按描述重新问题。
+        ### 对于日志
+        请先将日志等级设置为 debug, dnsLog 设置为true.
+        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: 日志
+      label: 服务端配置
-      description: |-
+      value: |-
-        请先将日志等级设置为 debug.
+        <details><pre><code>
-        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。
+        </code></pre></details>
-        提供完整的日志，不要仅提供你自己觉得有用的部分。
+    validations:
-      render: shell
+      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

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,4 @@
+contact_links:
+  - name: Community Support and Questions
+    url: https://github.com/XTLS/Xray-core/discussions
+    about: Please ask and answer questions there. The issue tracker is for issues with core.

.github/workflows/docker.yml

@@ -1,6 +1,8 @@
 name: Build docker image
 
 on:
+  release:
+    types: [published]
   push:
     branches:
       - main
@@ -19,6 +21,7 @@ jobs:
           images: ghcr.io/${{ github.repository_owner }}/xray-core
           flavor: latest=true
           tags: |
+            type=sha
             type=ref,event=branch
             type=ref,event=pr
             type=semver,pattern={{version}}
@@ -35,7 +38,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64

.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:
@@ -11,14 +17,14 @@ on:
       - "**/*.go"
       - "go.mod"
       - "go.sum"
-      - ".github/workflows/*.yml"
+      - ".github/workflows/release.yml"
   pull_request:
     types: [opened, synchronize, reopened]
     paths:
       - "**/*.go"
       - "go.mod"
       - "go.sum"
-      - ".github/workflows/*.yml"
+      - ".github/workflows/release.yml"
 jobs:
   prepare:
     runs-on: ubuntu-latest
@@ -72,12 +78,15 @@ jobs:
         # Include amd64 on all platforms.
         goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
+        gotoolchain: [""]
+        patch-assetname: [""]
+
         exclude:
           # Exclude i386 on darwin
           - goarch: 386
             goos: darwin
         include:
-          # BEIGIN MacOS ARM64
+          # BEGIN MacOS ARM64
           - goos: darwin
             goarch: arm64
           # END MacOS ARM64
@@ -146,6 +155,16 @@ jobs:
             goarch: arm
             goarm: 7
           # END OPENBSD ARM
+          # BEGIN Windows 7
+          - goos: windows
+            goarch: amd64
+            gotoolchain: 1.21.4
+            patch-assetname: win7-64
+          - goos: windows
+            goarch: 386
+            gotoolchain: 1.21.4
+            patch-assetname: win7-32
+          # END Windows 7
       fail-fast: false
 
     runs-on: ubuntu-latest
@@ -160,14 +179,15 @@ jobs:
 
       - name: Show workflow information
         run: |
-          export _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
+          _NAME=${{ matrix.patch-assetname }}
+          [ -n "$_NAME" ] || _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
           echo "GOOS: $GOOS, GOARCH: $GOARCH, GOARM: $GOARM, GOMIPS: $GOMIPS, RELEASE_NAME: $_NAME"
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: ${{ matrix.gotoolchain || '1.22' }}
           check-latest: true
 
       - name: Get project dependencies
@@ -177,7 +197,7 @@ jobs:
         run: |
           mkdir -p build_assets
           make
-          find . -maxdepth 1 -type f -regex '.*\(wxray\|xray\|xray_softfloat\)\(\|.exe\)' -exec mv {} ./build_assets/ \;
+          find . -maxdepth 1 -type f -regex './\(wxray\|xray\|xray_softfloat\)\(\|.exe\)' -exec mv {} ./build_assets/ \;
 
       - name: Restore Cache
         uses: actions/cache/restore@v4
@@ -192,6 +212,7 @@ jobs:
           cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
 
       - name: Create ZIP archive
+        if: github.event_name == 'release'
         shell: bash
         run: |
           pushd build_assets || exit 1

.github/workflows/test.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: '1.22'
           check-latest: true
       - name: Restore Cache
         uses: actions/cache/restore@v4

Makefile

@@ -2,14 +2,16 @@ NAME = xray
 
 VERSION=$(shell git describe --always --dirty)
 
-export GOARCH ?=
+# NOTE: This MAKEFILE can be used to build Xray-core locally and in Automatic workflows. It is \
-export GOOS ?=
+	provided for convenience in automatic building and functions as a part of it.
-
+# NOTE: If you need to modify this file, please be aware that:\
-ifdef GOARCH
+	- This file is not the main Makefile; it only accepts environment variables and builds the \
-	ifeq ($(GOOS),darwin)
+	binary.\
-		NAME:=$(NAME)-$(GOARCH)
+	- Automatic building expects the correct binaries to be built by this Makefile. If you \
-	endif
+	intend to propose a change to this Makefile, carefully review the file below and ensure \
-endif
+	that the change will not accidentally 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
@@ -21,18 +23,15 @@ ADDITION = go build -o w$(NAME).exe -trimpath -ldflags "-H windowsgui $(LDFLAGS)
 else
 OUTPUT = $(NAME)
 endif
-ifeq ($(shell echo "$(GOARCH)" | grep -Pq "(mips|mipsle)" && echo true),true) # 
+ifeq ($(shell echo "$(GOARCH)" | grep -Eq "(mips|mipsle)" && echo true),true) # 
 ADDITION = GOMIPS=softfloat go build -o $(NAME)_softfloat -trimpath -ldflags "$(LDFLAGS)" -v $(MAIN)
 endif
-.PHONY: clean
+.PHONY: clean build
 
 build:
 	go build -o $(OUTPUT) $(PARAMS) $(MAIN)
 	$(ADDITION)
 
-install:
-	go build -o $(PREFIX)/bin/$(OUTPUT) $(PARAMS) $(MAIN)
-
 clean:
 	go clean -v -i $(PWD)
 	rm -f xray xray.exe wxray.exe xray_softfloat

README.md

@@ -21,15 +21,13 @@
 ## Installation
 
 - Linux Script
-  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install)
+  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install) (**Official**)
-  - [team-cloudchaser/tempest](https://github.com/team-cloudchaser/tempest) (supports [`systemd`](https://systemd.io) and [OpenRC](https://github.com/OpenRC/openrc); Linux-only)
+  - [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) 
+  - [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) (**Official**)
-  - [iamybj/docker-xray](https://hub.docker.com/r/iamybj/docker-xray)
   - [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)
+  - [3X-UI](https://github.com/MHSanaei/3x-ui), [X-UI](https://github.com/alireza0/x-ui), [Xray-UI](https://github.com/qist/xray-ui)
-  - [Xray-UI](https://github.com/qist/xray-ui), [X-UI](https://github.com/sing-web/x-ui)
   - [Hiddify](https://github.com/hiddify/hiddify-config)
   - [Marzban](https://github.com/Gozargah/Marzban)
   - [Libertea](https://github.com/VZiChoushaDui/Libertea)
@@ -68,13 +66,10 @@
   - [luci-app-xray](https://github.com/yichya/luci-app-xray) ([openwrt-xray](https://github.com/yichya/openwrt-xray))
 - Windows
   - [v2rayN](https://github.com/2dust/v2rayN)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
   - [Furious](https://github.com/LorenEteval/Furious)
-  - [HiddifyN](https://github.com/hiddify/HiddifyN)
   - [Invisible Man - Xray](https://github.com/InvisibleManVPN/InvisibleMan-XRayClient)
 - Android
   - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [HiddifyNG](https://github.com/hiddify/HiddifyNG)
   - [X-flutter](https://github.com/XTLS/X-flutter)
 - iOS & macOS arm64
   - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
@@ -86,7 +81,6 @@
   - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
 - Linux
   - [v2rayA](https://github.com/v2rayA/v2rayA)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
   - [Furious](https://github.com/LorenEteval/Furious)
 
 ## Others that support VLESS, XTLS, REALITY, XUDP, PLUX...
@@ -99,21 +93,15 @@
   - [XTLS/libXray](https://github.com/XTLS/libXray)
   - [xtlsapi](https://github.com/hiddify/xtlsapi)
   - [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)
 - [Clash.Meta](https://github.com/MetaCubeX/Clash.Meta)
-  - [Clash Verge](https://github.com/zzzgydi/clash-verge)
   - [clashN](https://github.com/2dust/clashN)
   - [Clash Meta for Android](https://github.com/MetaCubeX/ClashMetaForAndroid)
-  - [meta_for_ios](https://t.me/meta_for_ios)
 - [sing-box](https://github.com/SagerNet/sing-box)
-  - [installReality](https://github.com/BoxXt/installReality)
-  - [sbox-reality](https://github.com/Misaka-blog/sbox-reality)
-  - [sing-box-for-ios](https://github.com/SagerNet/sing-box-for-ios)
 
 ## Contributing
 

app/commander/commander.go

@@ -8,6 +8,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/signal/done"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
@@ -21,12 +22,14 @@ 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,
+		listen: config.Listen,
 	}
 
 	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager) {
@@ -44,7 +47,7 @@ func NewCommander(ctx context.Context, config *Config) (*Commander, error) {
 		}
 		service, ok := rawService.(Service)
 		if !ok {
-			return nil, newError("not a Service.")
+			return nil, errors.New("not a Service.")
 		}
 		c.services = append(c.services, service)
 	}
@@ -66,19 +69,32 @@ func (c *Commander) Start() error {
 	}
 	c.Unlock()
 
+	var listen = func(listener net.Listener) {
+		if err := c.server.Serve(listener); err != nil {
+			errors.LogErrorInner(context.Background(), err, "failed to start grpc server")
+		}
+	}
+
+	if len(c.listen) > 0 {
+		if l, err := net.Listen("tcp", c.listen); err != nil {
+			errors.LogErrorInner(context.Background(), err, "API server failed to listen on ", c.listen)
+			return err
+		} else {
+			errors.LogInfo(context.Background(), "API server listening on ", l.Addr())
+			go listen(l)
+		}
+		return nil
+	}
+
 	listener := &OutboundListener{
 		buffer: make(chan net.Conn, 4),
 		done:   done.New(),
 	}
 
-	go func() {
+	go listen(listener)
-		if err := c.server.Serve(listener); err != nil {
-			newError("failed to start grpc server").Base(err).AtError().WriteToLog()
-		}
-	}()
 
 	if err := c.ohm.RemoveHandler(context.Background(), c.tag); err != nil {
-		newError("failed to remove existing handler").WriteToLog()
+		errors.LogInfoInner(context.Background(), err, "failed to remove existing handler")
 	}
 
 	return c.ohm.AddHandler(context.Background(), &Outbound{

app/commander/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // 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,
 	0x1a, 0x21, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2f,
 	0x74, 0x79, 0x70, 0x65, 0x64, 0x5f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x22, 0x56, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a,
+	0x6f, 0x74, 0x6f, 0x22, 0x6e, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a,
 	0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12,
-	0x3a, 0x0a, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b,
+	0x16, 0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
-	0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73,
+	0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x12, 0x3a, 0x0a, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69,
-	0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61,
+	0x63, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
-	0x67, 0x65, 0x52, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x22, 0x12, 0x0a, 0x10, 0x52,
+	0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79,
-	0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x42,
+	0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x07, 0x73, 0x65, 0x72, 0x76,
-	0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
+	0x69, 0x63, 0x65, 0x22, 0x12, 0x0a, 0x10, 0x52, 0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f,
-	0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0x50, 0x01, 0x5a, 0x27, 0x67, 0x69, 0x74,
+	0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x42, 0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
-	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61,
+	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
-	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61,
+	0x72, 0x50, 0x01, 0x5a, 0x27, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
-	0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e,
+	0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61,
-	0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x70, 0x70, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58,
-	0x33,
+	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 (

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;

app/commander/errors.generated.go

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

app/commander/outbound.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/signal/done"
@@ -31,7 +32,7 @@ func (l *OutboundListener) add(conn net.Conn) {
 func (l *OutboundListener) Accept() (net.Conn, error) {
 	select {
 	case <-l.done.Wait():
-		return nil, newError("listen closed")
+		return nil, errors.New("listen closed")
 	case c := <-l.buffer:
 		return c, nil
 	}

app/dispatcher/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/dispatcher/config.proto
 
 package dispatcher

app/dispatcher/default.go

@@ -4,11 +4,13 @@ package dispatcher
 
 import (
 	"context"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
@@ -25,7 +27,7 @@ import (
 	"github.com/xtls/xray-core/transport/pipe"
 )
 
-var errSniffingTimeout = newError("timeout on sniffing")
+var errSniffingTimeout = errors.New("timeout on sniffing")
 
 type cachedReader struct {
 	sync.Mutex
@@ -186,10 +188,22 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
 		return false
 	}
 	for _, d := range request.ExcludeForDomain {
+		if strings.HasPrefix(d, "regexp:") {
+			pattern := d[7:]
+			re, err := regexp.Compile(pattern)
+			if err != nil {
+				errors.LogInfo(ctx, "Unable to compile regex")
+				continue
+			}
+			if re.MatchString(domain) {
+				return false
+			}
+		} else {
 			if strings.ToLower(domain) == d {
 				return false
 			}
 		}
+	}
 	protocolString := result.Protocol()
 	if resComp, ok := result.(SnifferResultComposite); ok {
 		protocolString = resComp.ProtocolForDomainResult()
@@ -200,7 +214,7 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
 		}
 		if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" &&
 			fkr0.IsIPInIPPool(destination.Address) {
-			newError("Using sniffer ", protocolString, " since the fake DNS missed").WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "Using sniffer ", protocolString, " since the fake DNS missed")
 			return true
 		}
 		if resultSubset, ok := result.(SnifferIsProtoSubsetOf); ok {
@@ -218,11 +232,12 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	if !destination.IsValid() {
 		panic("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
-	if ob == nil {
+	if len(outbounds) == 0 {
-		ob = &session.Outbound{}
+		outbounds = []*session.Outbound{{}}
-		ctx = session.ContextWithOutbound(ctx, ob)
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
+	ob := outbounds[len(outbounds)-1]
 	ob.OriginalTarget = destination
 	ob.Target = destination
 	content := session.ContentFromContext(ctx)
@@ -247,7 +262,7 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 			}
 			if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
 				domain := result.Domain()
-				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfo(ctx, "sniffed domain: ", domain)
 				destination.Address = net.ParseAddress(domain)
 				protocol := result.Protocol()
 				if resComp, ok := result.(SnifferResultComposite); ok {
@@ -272,13 +287,14 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 // DispatchLink implements routing.Dispatcher.
 func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.Destination, outbound *transport.Link) error {
 	if !destination.IsValid() {
-		return newError("Dispatcher: Invalid destination.")
+		return errors.New("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
-	if ob == nil {
+	if len(outbounds) == 0 {
-		ob = &session.Outbound{}
+		outbounds = []*session.Outbound{{}}
-		ctx = session.ContextWithOutbound(ctx, ob)
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
+	ob := outbounds[len(outbounds)-1]
 	ob.OriginalTarget = destination
 	ob.Target = destination
 	content := session.ContentFromContext(ctx)
@@ -300,7 +316,7 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 		}
 		if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
 			domain := result.Domain()
-			newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "sniffed domain: ", domain)
 			destination.Address = net.ParseAddress(domain)
 			protocol := result.Protocol()
 			if resComp, ok := result.(SnifferResultComposite); ok {
@@ -368,7 +384,8 @@ 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 {
@@ -391,10 +408,10 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 		ctx = session.SetForcedOutboundTagToContext(ctx, "")
 		if h := d.ohm.GetHandler(forcedOutboundTag); h != nil {
 			isPickRoute = 1
-			newError("taking platform initialized detour [", forcedOutboundTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "taking platform initialized detour [", forcedOutboundTag, "] for [", destination, "]")
 			handler = h
 		} else {
-			newError("non existing tag for platform initialized detour: ", forcedOutboundTag).AtError().WriteToLog(session.ExportIDToError(ctx))
+			errors.LogError(ctx, "non existing tag for platform initialized detour: ", forcedOutboundTag)
 			common.Close(link.Writer)
 			common.Interrupt(link.Reader)
 			return
@@ -404,13 +421,13 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 			outTag := route.GetOutboundTag()
 			if h := d.ohm.GetHandler(outTag); h != nil {
 				isPickRoute = 2
-				newError("taking detour [", outTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfo(ctx, "taking detour [", outTag, "] for [", destination, "]")
 				handler = h
 			} else {
-				newError("non existing outTag: ", outTag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+				errors.LogWarning(ctx, "non existing outTag: ", outTag)
 			}
 		} else {
-			newError("default route for ", destination).WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "default route for ", destination)
 		}
 	}
 
@@ -419,12 +436,13 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 	}
 
 	if handler == nil {
-		newError("default outbound handler not exist").WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfo(ctx, "default outbound handler not exist")
 		common.Close(link.Writer)
 		common.Interrupt(link.Reader)
 		return
 	}
 
+	ob.Tag = handler.Tag()
 	if accessMessage := log.AccessMessageFromContext(ctx); accessMessage != nil {
 		if tag := handler.Tag(); tag != "" {
 			if inTag == "" {

app/dispatcher/errors.generated.go

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

app/dispatcher/fakednssniffer.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
@@ -22,15 +23,16 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 	}
 
 	if fakeDNSEngine == nil {
-		errNotInit := newError("FakeDNSEngine is not initialized, but such a sniffer is used").AtError()
+		errNotInit := errors.New("FakeDNSEngine is not initialized, but such a sniffer is used").AtError()
 		return protocolSnifferWithMetadata{}, errNotInit
 	}
 	return protocolSnifferWithMetadata{protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
-		Target := session.OutboundFromContext(ctx).Target
+		outbounds := session.OutboundsFromContext(ctx)
-		if Target.Network == net.Network_TCP || Target.Network == net.Network_UDP {
+		ob := outbounds[len(outbounds) - 1]
-			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(Target.Address)
+		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))
+				errors.LogInfo(ctx, "fake dns got domain: ", domainFromFakeDNS, " for ip: ", ob.Target.Address.String())
 				return &fakeDNSSniffResult{domainName: domainFromFakeDNS}, nil
 			}
 		}
@@ -38,7 +40,7 @@ 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
 			}
 		}
@@ -108,10 +110,10 @@ func newFakeDNSThenOthers(ctx context.Context, fakeDNSSniffer protocolSnifferWit
 					}
 					return nil, common.ErrNoClue
 				}
-				newError("ip address not in fake dns range, return as is").AtDebug().WriteToLog()
+				errors.LogDebug(ctx, "ip address not in fake dns range, return as is")
 				return nil, common.ErrNoClue
 			}
-			newError("fake dns sniffer did not set address in range option, assume false.").AtWarning().WriteToLog()
+			errors.LogWarning(ctx, "fake dns sniffer did not set address in range option, assume false.")
 			return nil, common.ErrNoClue
 		},
 		metadataSniffer: false,

app/dispatcher/sniffer.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/bittorrent"
 	"github.com/xtls/xray-core/common/protocol/http"
@@ -52,7 +53,7 @@ func NewSniffer(ctx context.Context) *Sniffer {
 	return ret
 }
 
-var errUnknownContent = newError("unknown content")
+var errUnknownContent = errors.New("unknown content")
 
 func (s *Sniffer) Sniff(c context.Context, payload []byte, network net.Network) (SniffResult, error) {
 	var pendingSniffer []protocolSnifferWithMetadata

app/dns/config.go

@@ -1,6 +1,7 @@
 package dns
 
 import (
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/common/uuid"
@@ -36,11 +37,11 @@ var localTLDsAndDotlessDomainsRule = &NameServer_OriginalRule{
 func toStrMatcher(t DomainMatchingType, domain string) (strmatcher.Matcher, error) {
 	strMType, f := typeMap[t]
 	if !f {
-		return nil, newError("unknown mapping type", t).AtWarning()
+		return nil, errors.New("unknown mapping type", t).AtWarning()
 	}
 	matcher, err := strMType.New(domain)
 	if err != nil {
-		return nil, newError("failed to create str matcher").Base(err)
+		return nil, errors.New("failed to create str matcher").Base(err)
 	}
 	return matcher, nil
 }
@@ -51,7 +52,7 @@ func toNetIP(addrs []net.Address) ([]net.IP, error) {
 		if addr.Family().IsIP() {
 			ips = append(ips, addr.IP())
 		} else {
-			return nil, newError("Failed to convert address", addr, "to Net IP.").AtWarning()
+			return nil, errors.New("Failed to convert address", addr, "to Net IP.").AtWarning()
 		}
 	}
 	return ips, nil

app/dns/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/dns/config.proto
 
 package dns

app/dns/dns.go

@@ -54,7 +54,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 	case 0, net.IPv4len, net.IPv6len:
 		clientIP = net.IP(config.ClientIp)
 	default:
-		return nil, newError("unexpected client IP length ", len(config.ClientIp))
+		return nil, errors.New("unexpected client IP length ", len(config.ClientIp))
 	}
 
 	var ipOption *dns.IPOption
@@ -81,7 +81,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 
 	hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
 	if err != nil {
-		return nil, newError("failed to create hosts").Base(err)
+		return nil, errors.New("failed to create hosts").Base(err)
 	}
 
 	clients := []*Client{}
@@ -99,7 +99,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		features.PrintDeprecatedFeatureWarning("simple DNS server")
 		client, err := NewSimpleClient(ctx, endpoint, clientIP)
 		if err != nil {
-			return nil, newError("failed to create client").Base(err)
+			return nil, errors.New("failed to create client").Base(err)
 		}
 		clients = append(clients, client)
 	}
@@ -122,7 +122,7 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		}
 		client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
 		if err != nil {
-			return nil, newError("failed to create client").Base(err)
+			return nil, errors.New("failed to create client").Base(err)
 		}
 		clients = append(clients, client)
 	}
@@ -170,7 +170,7 @@ func (s *DNS) IsOwnLink(ctx context.Context) bool {
 // LookupIP implements dns.Client.
 func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 	if domain == "" {
-		return nil, newError("empty domain name")
+		return nil, errors.New("empty domain name")
 	}
 
 	option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
@@ -190,10 +190,10 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 	case len(addrs) == 0: // Domain recorded, but no valid IP returned (e.g. IPv4 address with only IPv6 enabled)
 		return nil, dns.ErrEmptyResponse
 	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Domain replacement
-		newError("domain replaced: ", domain, " -> ", addrs[0].Domain()).WriteToLog()
+		errors.LogInfo(s.ctx, "domain replaced: ", domain, " -> ", addrs[0].Domain())
 		domain = addrs[0].Domain()
 	default: // Successfully found ip records in static host
-		newError("returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs).WriteToLog()
+		errors.LogInfo(s.ctx, "returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs)
 		return toNetIP(addrs)
 	}
 
@@ -202,7 +202,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 	ctx := session.ContextWithInbound(s.ctx, &session.Inbound{Tag: s.tag})
 	for _, client := range s.sortClients(domain) {
 		if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
-			newError("skip DNS resolution for domain ", domain, " at server ", client.Name()).AtDebug().WriteToLog()
+			errors.LogDebug(s.ctx, "skip DNS resolution for domain ", domain, " at server ", client.Name())
 			continue
 		}
 		ips, err := client.QueryIP(ctx, domain, option, s.disableCache)
@@ -210,7 +210,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 			return ips, nil
 		}
 		if err != nil {
-			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
+			errors.LogInfoInner(s.ctx, err, "failed to lookup ip for domain ", domain, " at server ", client.Name())
 			errs = append(errs, err)
 		}
 		// 5 for RcodeRefused in miekg/dns, hardcode to reduce binary size
@@ -219,7 +219,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 		}
 	}
 
-	return nil, newError("returning nil for domain ", domain).Base(errors.Combine(errs...))
+	return nil, errors.New("returning nil for domain ", domain).Base(errors.Combine(errs...))
 }
 
 // LookupHosts implements dns.HostsLookup.
@@ -231,7 +231,7 @@ func (s *DNS) LookupHosts(domain string) *net.Address {
 	// Normalize the FQDN form query
 	addrs := s.hosts.Lookup(domain, *s.ipOption)
 	if len(addrs) > 0 {
-		newError("domain replaced: ", domain, " -> ", addrs[0].String()).AtInfo().WriteToLog()
+		errors.LogInfo(s.ctx, "domain replaced: ", domain, " -> ", addrs[0].String())
 		return &addrs[0]
 	}
 
@@ -289,16 +289,16 @@ func (s *DNS) sortClients(domain string) []*Client {
 	}
 
 	if len(domainRules) > 0 {
-		newError("domain ", domain, " matches following rules: ", domainRules).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " matches following rules: ", domainRules)
 	}
 	if len(clientNames) > 0 {
-		newError("domain ", domain, " will use DNS in order: ", clientNames).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " will use DNS in order: ", clientNames)
 	}
 
 	if len(clients) == 0 {
 		clients = append(clients, s.clients[0])
 		clientNames = append(clientNames, s.clients[0].Name())
-		newError("domain ", domain, " will use the first DNS: ", clientNames).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " will use the first DNS: ", clientNames)
 	}
 
 	return clients

app/dns/dnscommon.go

@@ -171,10 +171,10 @@ func parseResponse(payload []byte) (*IPRecord, error) {
 	var parser dnsmessage.Parser
 	h, err := parser.Start(payload)
 	if err != nil {
-		return nil, newError("failed to parse DNS response").Base(err).AtWarning()
+		return nil, errors.New("failed to parse DNS response").Base(err).AtWarning()
 	}
 	if err := parser.SkipAllQuestions(); err != nil {
-		return nil, newError("failed to skip questions in DNS response").Base(err).AtWarning()
+		return nil, errors.New("failed to skip questions in DNS response").Base(err).AtWarning()
 	}
 
 	now := time.Now()
@@ -189,7 +189,7 @@ L:
 		ah, err := parser.AnswerHeader()
 		if err != nil {
 			if err != dnsmessage.ErrSectionDone {
-				newError("failed to parse answer section for domain: ", ah.Name.String()).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse answer section for domain: ", ah.Name.String())
 			}
 			break
 		}
@@ -207,20 +207,20 @@ L:
 		case dnsmessage.TypeA:
 			ans, err := parser.AResource()
 			if err != nil {
-				newError("failed to parse A record for domain: ", ah.Name).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse A record for domain: ", ah.Name)
 				break L
 			}
 			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.A[:]))
 		case dnsmessage.TypeAAAA:
 			ans, err := parser.AAAAResource()
 			if err != nil {
-				newError("failed to parse AAAA record for domain: ", ah.Name).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse AAAA record for domain: ", ah.Name)
 				break L
 			}
 			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.AAAA[:]))
 		default:
 			if err := parser.SkipAnswer(); err != nil {
-				newError("failed to skip answer").Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to skip answer")
 				break L
 			}
 			continue

app/dns/errors.generated.go

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

app/dns/fakedns/errors.generated.go

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

app/dns/fakedns/fake.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/cache"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
 )
@@ -45,7 +46,7 @@ func (fkdns *Holder) Start() error {
 	if fkdns.config != nil && fkdns.config.IpPool != "" && fkdns.config.LruSize != 0 {
 		return fkdns.initializeFromConfig()
 	}
-	return newError("invalid fakeDNS setting")
+	return errors.New("invalid fakeDNS setting")
 }
 
 func (fkdns *Holder) Close() error {
@@ -60,7 +61,7 @@ func NewFakeDNSHolder() (*Holder, error) {
 	var err error
 
 	if fkdns, err = NewFakeDNSHolderConfigOnly(nil); err != nil {
-		return nil, newError("Unable to create Fake Dns Engine").Base(err).AtError()
+		return nil, errors.New("Unable to create Fake Dns Engine").Base(err).AtError()
 	}
 	err = fkdns.initialize(dns.FakeIPv4Pool, 65535)
 	if err != nil {
@@ -82,13 +83,13 @@ func (fkdns *Holder) initialize(ipPoolCidr string, lruSize int) error {
 	var err error
 
 	if _, ipRange, err = gonet.ParseCIDR(ipPoolCidr); err != nil {
-		return newError("Unable to parse CIDR for Fake DNS IP assignment").Base(err).AtError()
+		return errors.New("Unable to parse CIDR for Fake DNS IP assignment").Base(err).AtError()
 	}
 
 	ones, bits := ipRange.Mask.Size()
 	rooms := bits - ones
 	if math.Log2(float64(lruSize)) >= float64(rooms) {
-		return newError("LRU size is bigger than subnet size").AtError()
+		return errors.New("LRU size is bigger than subnet size").AtError()
 	}
 	fkdns.domainToIP = cache.NewLru(lruSize)
 	fkdns.ipRange = ipRange
@@ -137,7 +138,7 @@ func (fkdns *Holder) GetDomainFromFakeDNS(ip net.Address) string {
 	if k, ok := fkdns.domainToIP.GetKeyFromValue(ip); ok {
 		return k.(string)
 	}
-	newError("A fake ip request to ", ip, ", however there is no matching domain name in fake DNS").AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "A fake ip request to ", ip, ", however there is no matching domain name in fake DNS")
 	return ""
 }
 
@@ -192,10 +193,10 @@ func (h *HolderMulti) Start() error {
 	for _, v := range h.holders {
 		if v.config != nil && v.config.IpPool != "" && v.config.LruSize != 0 {
 			if err := v.Start(); err != nil {
-				return newError("Cannot start all fake dns pools").Base(err)
+				return errors.New("Cannot start all fake dns pools").Base(err)
 			}
 		} else {
-			return newError("invalid fakeDNS setting")
+			return errors.New("invalid fakeDNS setting")
 		}
 	}
 	return nil
@@ -204,7 +205,7 @@ func (h *HolderMulti) Start() error {
 func (h *HolderMulti) Close() error {
 	for _, v := range h.holders {
 		if err := v.Close(); err != nil {
-			return newError("Cannot close all fake dns pools").Base(err)
+			return errors.New("Cannot close all fake dns pools").Base(err)
 		}
 	}
 	return nil

app/dns/fakedns/fakedns.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/dns/fakedns/fakedns.proto
 
 package fakedns

app/dns/hosts.go

@@ -1,7 +1,10 @@
 package dns
 
 import (
+	"context"
+
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/features"
@@ -32,7 +35,7 @@ func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDoma
 
 			address := ip.AsAddress()
 			if address.Family().IsDomain() {
-				return nil, newError("invalid domain address in static hosts: ", address.Domain()).AtWarning()
+				return nil, errors.New("invalid domain address in static hosts: ", address.Domain()).AtWarning()
 			}
 
 			sh.ips[id] = []net.Address{address}
@@ -42,7 +45,7 @@ func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDoma
 	for _, mapping := range hosts {
 		matcher, err := toStrMatcher(mapping.Type, mapping.Domain)
 		if err != nil {
-			return nil, newError("failed to create domain matcher").Base(err)
+			return nil, errors.New("failed to create domain matcher").Base(err)
 		}
 		id := g.Add(matcher)
 		ips := make([]net.Address, 0, len(mapping.Ip)+1)
@@ -53,12 +56,12 @@ func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDoma
 			for _, ip := range mapping.Ip {
 				addr := net.IPAddress(ip)
 				if addr == nil {
-					return nil, newError("invalid IP address in static hosts: ", ip).AtWarning()
+					return nil, errors.New("invalid IP address in static hosts: ", ip).AtWarning()
 				}
 				ips = append(ips, addr)
 			}
 		default:
-			return nil, newError("neither IP address nor proxied domain specified for domain: ", mapping.Domain).AtWarning()
+			return nil, errors.New("neither IP address nor proxied domain specified for domain: ", mapping.Domain).AtWarning()
 		}
 
 		sh.ips[id] = ips
@@ -90,7 +93,7 @@ func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) [
 	case len(addrs) == 0: // Not recorded in static hosts, return nil
 		return nil
 	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Try to unwrap domain
-		newError("found replaced domain: ", domain, " -> ", addrs[0].Domain(), ". Try to unwrap it").AtDebug().WriteToLog()
+		errors.LogDebug(context.Background(), "found replaced domain: ", domain, " -> ", addrs[0].Domain(), ". Try to unwrap it")
 		if maxDepth > 0 {
 			unwrapped := h.lookup(addrs[0].Domain(), option, maxDepth-1)
 			if unwrapped != nil {

app/dns/nameserver.go

@@ -64,7 +64,7 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 	if dest.Network == net.Network_UDP { // UDP classic DNS mode
 		return NewClassicNameServer(dest, dispatcher), nil
 	}
-	return nil, newError("No available name server could be created from ", dest).AtWarning()
+	return nil, errors.New("No available name server could be created from ", dest).AtWarning()
 }
 
 // NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
@@ -82,10 +82,10 @@ func NewClient(
 		// Create a new server for each client for now
 		server, err := NewServer(ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
 		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
+			return errors.New("failed to create nameserver").Base(err).AtWarning()
 		}
 
-		// Priotize local domains with specific TLDs or without any dot to local DNS
+		// Prioritize local domains with specific TLDs or those without any dot for the local DNS
 		if _, isLocalDNS := server.(*LocalNameServer); isLocalDNS {
 			ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
 			ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
@@ -111,7 +111,7 @@ func NewClient(
 		for _, domain := range ns.PrioritizedDomain {
 			domainRule, err := toStrMatcher(domain.Type, domain.Domain)
 			if err != nil {
-				return newError("failed to create prioritized domain").Base(err).AtWarning()
+				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
 			}
 			originalRuleIdx := ruleCurr
 			if ruleCurr < len(ns.OriginalRules) {
@@ -130,7 +130,7 @@ func NewClient(
 			}
 			err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
 			if err != nil {
-				return newError("failed to create prioritized domain").Base(err).AtWarning()
+				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
 			}
 		}
 
@@ -139,7 +139,7 @@ func NewClient(
 		for _, geoip := range ns.Geoip {
 			matcher, err := container.Add(geoip)
 			if err != nil {
-				return newError("failed to create ip matcher").Base(err).AtWarning()
+				return errors.New("failed to create ip matcher").Base(err).AtWarning()
 			}
 			matchers = append(matchers, matcher)
 		}
@@ -147,9 +147,9 @@ func NewClient(
 		if len(clientIP) > 0 {
 			switch ns.Address.Address.GetAddress().(type) {
 			case *net.IPOrDomain_Domain:
-				newError("DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+				errors.LogInfo(ctx, "DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String())
 			case *net.IPOrDomain_Ip:
-				newError("DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+				errors.LogInfo(ctx, "DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String())
 			}
 		}
 
@@ -169,7 +169,7 @@ func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.I
 	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
 		server, err := NewServer(endpoint.AsDestination(), dispatcher, QueryStrategy_USE_IP)
 		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
+			return errors.New("failed to create nameserver").Base(err).AtWarning()
 		}
 		client.server = server
 		client.clientIP = clientIP
@@ -179,9 +179,9 @@ func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.I
 	if len(clientIP) > 0 {
 		switch endpoint.Address.GetAddress().(type) {
 		case *net.IPOrDomain_Domain:
-			newError("DNS: client ", endpoint.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+			errors.LogInfo(ctx, "DNS: client ", endpoint.Address.GetDomain(), " uses clientIP ", clientIP.String())
 		case *net.IPOrDomain_Ip:
-			newError("DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+			errors.LogInfo(ctx, "DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String())
 		}
 	}
 
@@ -222,7 +222,7 @@ func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error)
 	if len(newIps) == 0 {
 		return nil, errExpectedIPNonMatch
 	}
-	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
+	errors.LogDebug(context.Background(), "domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name())
 	return newIps, nil
 }
 

app/dns/nameserver_doh.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
@@ -43,7 +44,7 @@ type DoHNameServer struct {
 
 // NewDoHNameServer creates DOH server object for remote resolving.
 func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (*DoHNameServer, error) {
-	newError("DNS: created Remote DOH client for ", url.String()).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created Remote DOH client for ", url.String())
 	s := baseDOHNameServer(url, "DOH", queryStrategy)
 
 	s.dispatcher = dispatcher
@@ -119,7 +120,7 @@ func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameSe
 		Timeout:   time.Second * 180,
 		Transport: tr,
 	}
-	newError("DNS: created Local DOH client for ", url.String()).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created Local DOH client for ", url.String())
 	return s
 }
 
@@ -150,7 +151,7 @@ func (s *DoHNameServer) Cleanup() error {
 	defer s.Unlock()
 
 	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
+		return errors.New("nothing to do. stopping...")
 	}
 
 	for domain, record := range s.ips {
@@ -162,7 +163,7 @@ func (s *DoHNameServer) Cleanup() error {
 		}
 
 		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
+			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
 			delete(s.ips, domain)
 		} else {
 			s.ips[domain] = record
@@ -205,7 +206,7 @@ func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 			updated = true
 		}
 	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
 
 	if updated {
 		s.ips[req.domain] = rec
@@ -225,10 +226,10 @@ func (s *DoHNameServer) newReqID() uint16 {
 }
 
 func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying: ", domain).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+	errors.LogInfo(ctx, s.name, " querying: ", domain)
 
 	if s.name+"." == "DOH//"+domain {
-		newError(s.name, " tries to resolve itself! Use IP or set \"hosts\" instead.").AtError().WriteToLog(session.ExportIDToError(ctx))
+		errors.LogError(ctx, s.name, " tries to resolve itself! Use IP or set \"hosts\" instead.")
 		return
 	}
 
@@ -258,7 +259,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			})
 
 			// forced to use mux for DOH
-			// dnsCtx = session.ContextWithMuxPrefered(dnsCtx, true)
+			// dnsCtx = session.ContextWithMuxPreferred(dnsCtx, true)
 
 			var cancel context.CancelFunc
 			dnsCtx, cancel = context.WithDeadline(dnsCtx, deadline)
@@ -266,17 +267,17 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query for ", domain)
 				return
 			}
 			resp, err := s.dohHTTPSContext(dnsCtx, b.Bytes())
 			if err != nil {
-				newError("failed to retrieve response for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to retrieve response for ", domain)
 				return
 			}
 			rec, err := parseResponse(resp)
 			if err != nil {
-				newError("failed to handle DOH response for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to handle DOH response for ", domain)
 				return
 			}
 			s.updateIP(r, rec)
@@ -361,11 +362,11 @@ func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net
 	}
 
 	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
 	} else {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
 			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
 			return ips, err
 		}

app/dns/nameserver_fakedns.go

@@ -3,6 +3,7 @@ package dns
 import (
 	"context"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
@@ -25,7 +26,7 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, op
 		if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
 			f.fakeDNSEngine = fd
 		}); err != nil {
-			return nil, newError("Unable to locate a fake DNS Engine").Base(err).AtError()
+			return nil, errors.New("Unable to locate a fake DNS Engine").Base(err).AtError()
 		}
 	}
 	var ips []net.Address
@@ -37,10 +38,10 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, op
 
 	netIP, err := toNetIP(ips)
 	if err != nil {
-		return nil, newError("Unable to convert IP to net ip").Base(err).AtError()
+		return nil, errors.New("Unable to convert IP to net ip").Base(err).AtError()
 	}
 
-	newError(f.Name(), " got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
+	errors.LogInfo(ctx, f.Name(), " got answer: ", domain, " -> ", ips)
 
 	if len(netIP) > 0 {
 		return netIP, nil

app/dns/nameserver_local.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
@@ -19,7 +20,7 @@ type LocalNameServer struct {
 const errEmptyResponse = "No address associated with hostname"
 
 // QueryIP implements Server.
-func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) {
+func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) {
 	start := time.Now()
 	ips, err = s.client.LookupIP(domain, option)
 
@@ -28,7 +29,7 @@ func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, op
 	}
 
 	if len(ips) > 0 {
-		newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
+		errors.LogInfo(ctx, "Localhost got answer: ", domain, " -> ", ips)
 		log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
 	}
 
@@ -42,7 +43,7 @@ func (s *LocalNameServer) Name() string {
 
 // NewLocalNameServer creates localdns server object for directly lookup in system DNS.
 func NewLocalNameServer() *LocalNameServer {
-	newError("DNS: created localhost client").AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created localhost client")
 	return &LocalNameServer{
 		client: localdns.New(),
 	}

app/dns/nameserver_quic.go

@@ -12,6 +12,7 @@ import (
 	"github.com/quic-go/quic-go"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
@@ -45,7 +46,7 @@ type QUICNameServer struct {
 
 // NewQUICNameServer creates DNS-over-QUIC client object for local resolving
 func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServer, error) {
-	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created Local DNS-over-QUIC client for ", url.String())
 
 	var err error
 	port := net.Port(853)
@@ -84,7 +85,7 @@ func (s *QUICNameServer) Cleanup() error {
 	defer s.Unlock()
 
 	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
+		return errors.New("nothing to do. stopping...")
 	}
 
 	for domain, record := range s.ips {
@@ -96,7 +97,7 @@ func (s *QUICNameServer) Cleanup() error {
 		}
 
 		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
+			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
 			delete(s.ips, domain)
 		} else {
 			s.ips[domain] = record
@@ -139,7 +140,7 @@ func (s *QUICNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 			updated = true
 		}
 	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
 
 	if updated {
 		s.ips[req.domain] = rec
@@ -159,7 +160,7 @@ func (s *QUICNameServer) newReqID() uint16 {
 }
 
 func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying: ", domain).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+	errors.LogInfo(ctx, s.name, " querying: ", domain)
 
 	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
 
@@ -192,7 +193,7 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query")
 				return
 			}
 
@@ -203,13 +204,13 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 
 			conn, err := s.openStream(dnsCtx)
 			if err != nil {
-				newError("failed to open quic connection").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to open quic connection")
 				return
 			}
 
 			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to send query")
 				return
 			}
 
@@ -219,25 +220,25 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 			defer respBuf.Release()
 			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
 				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()
+				errors.LogErrorInner(ctx, err, "failed to parse response length")
 				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()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
-				newError("failed to handle response").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to handle response")
 				return
 			}
 			s.updateIP(r, rec)
@@ -296,11 +297,11 @@ func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP ne
 	}
 
 	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
 	} else {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
 			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
 			return ips, err
 		}

app/dns/nameserver_tcp.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
@@ -114,7 +115,7 @@ func (s *TCPNameServer) Cleanup() error {
 	defer s.Unlock()
 
 	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
+		return errors.New("nothing to do. stopping...")
 	}
 
 	for domain, record := range s.ips {
@@ -126,7 +127,7 @@ func (s *TCPNameServer) Cleanup() error {
 		}
 
 		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
+			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
 			delete(s.ips, domain)
 		} else {
 			s.ips[domain] = record
@@ -169,7 +170,7 @@ func (s *TCPNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 			updated = true
 		}
 	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
 
 	if updated {
 		s.ips[req.domain] = rec
@@ -189,7 +190,7 @@ func (s *TCPNameServer) newReqID() uint16 {
 }
 
 func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying DNS for: ", domain).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+	errors.LogDebug(ctx, s.name, " querying DNS for: ", domain)
 
 	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
 
@@ -219,13 +220,13 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query")
 				return
 			}
 
 			conn, err := s.dial(dnsCtx)
 			if err != nil {
-				newError("failed to dial namesever").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to dial namesever")
 				return
 			}
 			defer conn.Close()
@@ -236,7 +237,7 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to send query")
 				return
 			}
 			dnsReqBuf.Release()
@@ -245,25 +246,25 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			defer respBuf.Release()
 			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
 				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()
+				errors.LogErrorInner(ctx, err, "failed to parse response length")
 				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()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
-				newError("failed to parse DNS over TCP response").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to parse DNS over TCP response")
 				return
 			}
 
@@ -319,11 +320,11 @@ func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net
 	}
 
 	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
 	} else {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
 			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
 			return ips, err
 		}

app/dns/nameserver_udp.go

@@ -8,11 +8,11 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	udp_proto "github.com/xtls/xray-core/common/protocol/udp"
-	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal/pubsub"
 	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
@@ -53,7 +53,7 @@ func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher
 		Execute:  s.Cleanup,
 	}
 	s.udpServer = udp.NewDispatcher(dispatcher, s.HandleResponse)
-	newError("DNS: created UDP client initialized for ", address.NetAddr()).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created UDP client initialized for ", address.NetAddr())
 	return s
 }
 
@@ -69,7 +69,7 @@ func (s *ClassicNameServer) Cleanup() error {
 	defer s.Unlock()
 
 	if len(s.ips) == 0 && len(s.requests) == 0 {
-		return newError(s.name, " nothing to do. stopping...")
+		return errors.New(s.name, " nothing to do. stopping...")
 	}
 
 	for domain, record := range s.ips {
@@ -81,7 +81,7 @@ func (s *ClassicNameServer) Cleanup() error {
 		}
 
 		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
+			errors.LogDebug(context.Background(), s.name, " cleanup ", domain)
 			delete(s.ips, domain)
 		} else {
 			s.ips[domain] = record
@@ -109,7 +109,7 @@ func (s *ClassicNameServer) Cleanup() error {
 func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_proto.Packet) {
 	ipRec, err := parseResponse(packet.Payload.Bytes())
 	if err != nil {
-		newError(s.name, " fail to parse responded DNS udp").AtError().WriteToLog()
+		errors.LogError(ctx, s.name, " fail to parse responded DNS udp")
 		return
 	}
 
@@ -122,7 +122,7 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 	}
 	s.Unlock()
 	if !ok {
-		newError(s.name, " cannot find the pending request").AtError().WriteToLog()
+		errors.LogError(ctx, s.name, " cannot find the pending request")
 		return
 	}
 
@@ -135,7 +135,7 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 	}
 
 	elapsed := time.Since(req.start)
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
+	errors.LogInfo(ctx, s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
 	if len(req.domain) > 0 && (rec.A != nil || rec.AAAA != nil) {
 		s.updateIP(req.domain, &rec)
 	}
@@ -160,7 +160,7 @@ func (s *ClassicNameServer) updateIP(domain string, newRec *record) {
 	}
 
 	if updated {
-		newError(s.name, " updating IP records for domain:", domain).AtDebug().WriteToLog()
+		errors.LogDebug(context.Background(), s.name, " updating IP records for domain:", domain)
 		s.ips[domain] = rec
 	}
 	if newRec.A != nil {
@@ -187,7 +187,7 @@ func (s *ClassicNameServer) addPendingRequest(req *dnsRequest) {
 }
 
 func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying DNS for: ", domain).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+	errors.LogDebug(ctx, s.name, " querying DNS for: ", domain)
 
 	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
 
@@ -241,11 +241,11 @@ func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, clientIP
 	fqdn := Fqdn(domain)
 
 	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.name)
 	} else {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+			errors.LogDebugInner(ctx, err, s.name, " cache HIT ", domain, " -> ", ips)
 			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
 			return ips, err
 		}

app/log/command/command.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/xtls/xray-core/app/log"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	grpc "google.golang.org/grpc"
 )
@@ -19,13 +20,13 @@ type LoggerServer struct {
 func (s *LoggerServer) RestartLogger(ctx context.Context, request *RestartLoggerRequest) (*RestartLoggerResponse, error) {
 	logger := s.V.GetFeature((*log.Instance)(nil))
 	if logger == nil {
-		return nil, newError("unable to get logger instance")
+		return nil, errors.New("unable to get logger instance")
 	}
 	if err := logger.Close(); err != nil {
-		return nil, newError("failed to close logger").Base(err)
+		return nil, errors.New("failed to close logger").Base(err)
 	}
 	if err := logger.Start(); err != nil {
-		return nil, newError("failed to start logger").Base(err)
+		return nil, errors.New("failed to start logger").Base(err)
 	}
 	return &RestartLoggerResponse{}, nil
 }

app/log/command/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/log/command/config.proto
 
 package command

app/log/command/config_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
+// - protoc             v5.27.0
 // source: app/log/command/config.proto
 
 package command

app/log/command/errors.generated.go

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

app/log/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/log/config.proto
 
 package log

app/log/errors.generated.go

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

app/log/log.go

@@ -7,6 +7,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 )
 
@@ -29,13 +30,13 @@ func New(ctx context.Context, config *Config) (*Instance, error) {
 	}
 	log.RegisterHandler(g)
 
-	// start logger instantly on inited
+	// Start logger instantly on initialization
-	// other modules would log during init
+	// Other modules would log during initialization
 	if err := g.startInternal(); err != nil {
 		return nil, err
 	}
 
-	newError("Logger started").AtDebug().WriteToLog()
+	errors.LogDebug(ctx, "Logger started")
 	return g, nil
 }
 
@@ -77,10 +78,10 @@ func (g *Instance) startInternal() error {
 	g.active = true
 
 	if err := g.initAccessLogger(); err != nil {
-		return newError("failed to initialize access logger").Base(err).AtWarning()
+		return errors.New("failed to initialize access logger").Base(err).AtWarning()
 	}
 	if err := g.initErrorLogger(); err != nil {
-		return newError("failed to initialize error logger").Base(err).AtWarning()
+		return errors.New("failed to initialize error logger").Base(err).AtWarning()
 	}
 
 	return nil
@@ -120,7 +121,7 @@ func (g *Instance) Handle(msg log.Message) {
 
 // Close implements common.Closable.Close().
 func (g *Instance) Close() error {
-	newError("Logger closing").AtDebug().WriteToLog()
+	errors.LogDebug(context.Background(), "Logger closing")
 
 	g.Lock()
 	defer g.Unlock()

app/log/log_creator.go

@@ -4,6 +4,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 )
 
@@ -19,7 +20,7 @@ var handlerCreatorMapLock = &sync.RWMutex{}
 
 func RegisterHandlerCreator(logType LogType, f HandlerCreator) error {
 	if f == nil {
-		return newError("nil HandlerCreator")
+		return errors.New("nil HandlerCreator")
 	}
 
 	handlerCreatorMapLock.Lock()
@@ -35,7 +36,7 @@ func createHandler(logType LogType, options HandlerCreatorOptions) (log.Handler,
 
 	creator, found := handlerCreatorMap[logType]
 	if !found {
-		return nil, newError("unable to create log handler for ", logType)
+		return nil, errors.New("unable to create log handler for ", logType)
 	}
 	return creator(logType, options)
 }

app/metrics/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/metrics/config.proto
 
 package metrics

app/metrics/errors.generated.go

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

app/metrics/metrics.go

@@ -10,6 +10,7 @@ import (
 	"github.com/xtls/xray-core/app/observatory"
 	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/core"
@@ -93,12 +94,12 @@ func (p *MetricsHandler) Start() error {
 
 	go func() {
 		if err := http.Serve(listener, http.DefaultServeMux); err != nil {
-			newError("failed to start metrics server").Base(err).AtError().WriteToLog()
+			errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
 		}
 	}()
 
 	if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
-		newError("failed to remove existing handler").WriteToLog()
+		errors.LogInfo(context.Background(), "failed to remove existing handler")
 	}
 
 	return p.ohm.AddHandler(context.Background(), &Outbound{

app/metrics/outbound.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/signal/done"
@@ -31,7 +32,7 @@ func (l *OutboundListener) add(conn net.Conn) {
 func (l *OutboundListener) Accept() (net.Conn, error) {
 	select {
 	case <-l.done.Wait():
-		return nil, newError("listen closed")
+		return nil, errors.New("listen closed")
 	case c := <-l.buffer:
 		return c, nil
 	}

app/observatory/burst/burstobserver.go

@@ -3,14 +3,16 @@ package burst
 import (
 	"context"
 
-	"github.com/xtls/xray-core/core"
+	"sync"
+
 	"github.com/xtls/xray-core/app/observatory"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/signal/done"
+	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 	"google.golang.org/protobuf/proto"
-	"sync"
 )
 
 type Observer struct {
@@ -66,7 +68,7 @@ func (o *Observer) Start() error {
 			hs, ok := o.ohm.(outbound.HandlerSelector)
 			if !ok {
 
-				return nil, newError("outbound.Manager is not a HandlerSelector")
+				return nil, errors.New("outbound.Manager is not a HandlerSelector")
 			}
 
 			outbounds := hs.Select(o.config.SubjectSelector)
@@ -90,7 +92,7 @@ func New(ctx context.Context, config *Config) (*Observer, error) {
 		outboundManager = om
 	})
 	if err != nil {
-		return nil, newError("Cannot get depended features").Base(err)
+		return nil, errors.New("Cannot get depended features").Base(err)
 	}
 	hp := NewHealthPing(ctx, config.PingConfig)
 	return &Observer{

app/observatory/burst/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/observatory/burst/config.proto
 
 package burst

app/observatory/burst/errors.generated.go

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

app/observatory/burst/healthping.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/errors"
 )
 
 // HealthPingSettings holds settings for health Checker
@@ -51,7 +52,7 @@ func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
 	if settings.Interval == 0 {
 		settings.Interval = time.Duration(1) * time.Minute
 	} else if settings.Interval < 10 {
-		newError("health check interval is too small, 10s is applied").AtWarning().WriteToLog()
+		errors.LogWarning(ctx, "health check interval is too small, 10s is applied")
 		settings.Interval = time.Duration(10) * time.Second
 	}
 	if settings.SamplingCount <= 0 {
@@ -82,7 +83,7 @@ func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
 	go func() {
 		tags, err := selector()
 		if err != nil {
-			newError("error select outbounds for initial health check: ", err).AtWarning().WriteToLog()
+			errors.LogWarning(h.ctx, "error select outbounds for initial health check: ", err)
 			return
 		}
 		h.Check(tags)
@@ -93,7 +94,7 @@ func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
 			go func() {
 				tags, err := selector()
 				if err != nil {
-					newError("error select outbounds for scheduled health check: ", err).AtWarning().WriteToLog()
+					errors.LogWarning(h.ctx, "error select outbounds for scheduled health check: ", err)
 					return
 				}
 				h.doCheck(tags, interval, h.Settings.SamplingCount)
@@ -125,7 +126,7 @@ func (h *HealthPing) Check(tags []string) error {
 	if len(tags) == 0 {
 		return nil
 	}
-	newError("perform one-time health check for tags ", tags).AtInfo().WriteToLog()
+	errors.LogInfo(h.ctx, "perform one-time health check for tags ", tags)
 	h.doCheck(tags, 0, 1)
 	return nil
 }
@@ -158,7 +159,7 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 				delay = time.Duration(dice.Roll(int(duration)))
 			}
 			time.AfterFunc(delay, func() {
-				newError("checking ", handler).AtDebug().WriteToLog()
+				errors.LogDebug(h.ctx, "checking ", handler)
 				delay, err := client.MeasureDelay()
 				if err == nil {
 					ch <- &rtt{
@@ -168,19 +169,19 @@ func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int)
 					return
 				}
 				if !h.checkConnectivity() {
-					newError("network is down").AtWarning().WriteToLog()
+					errors.LogWarning(h.ctx, "network is down")
 					ch <- &rtt{
 						handler: handler,
 						value:   0,
 					}
 					return
 				}
-				newError(fmt.Sprintf(
+				errors.LogWarning(h.ctx, fmt.Sprintf(
 					"error ping %s with %s: %s",
 					h.Settings.Destination,
 					handler,
 					err,
-				)).AtWarning().WriteToLog()
+				))
 				ch <- &rtt{
 					handler: handler,
 					value:   rttFailed,
@@ -208,7 +209,7 @@ func (h *HealthPing) PutResult(tag string, rtt time.Duration) {
 	if !ok {
 		// validity is 2 times to sampling period, since the check are
 		// distributed in the time line randomly, in extreme cases,
-		// previous checks are distributed on the left, and latters
+		// Previous checks are distributed on the left, and later ones
 		// on the right
 		validity := h.Settings.Interval * time.Duration(h.Settings.SamplingCount) * 2
 		r = NewHealthPingResult(h.Settings.SamplingCount, validity)

app/observatory/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/observatory/command/command.proto
 
 package command

app/observatory/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
+// - protoc             v5.27.0
 // source: app/observatory/command/command.proto
 
 package command

app/observatory/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/observatory/config.proto
 
 package observatory

app/observatory/errors.generated.go

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

app/observatory/explainErrors.go

@@ -8,10 +8,10 @@ type errorCollector struct {
 
 func (e *errorCollector) SubmitError(err error) {
 	if e.errors == nil {
-		e.errors = newError("underlying connection error").Base(err)
+		e.errors = errors.New("underlying connection error").Base(err)
 		return
 	}
-	e.errors = e.errors.Base(newError("underlying connection error").Base(err))
+	e.errors = e.errors.Base(errors.New("underlying connection error").Base(err))
 }
 
 func newErrorCollector() *errorCollector {
@@ -20,7 +20,7 @@ func newErrorCollector() *errorCollector {
 
 func (e *errorCollector) UnderlyingError() error {
 	if e.errors == nil {
-		return newError("failed to produce report")
+		return errors.New("failed to produce report")
 	}
 	return e.errors
 }

app/observatory/observer.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	v2net "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal/done"
@@ -60,7 +61,7 @@ func (o *Observer) background() {
 	for !o.finished.Done() {
 		hs, ok := o.ohm.(outbound.HandlerSelector)
 		if !ok {
-			newError("outbound.Manager is not a HandlerSelector").WriteToLog()
+			errors.LogInfo(o.ctx, "outbound.Manager is not a HandlerSelector")
 			return
 		}
 
@@ -127,18 +128,18 @@ func (o *Observer) probe(outbound string) ProbeResult {
 				// MUST use Xray's built in context system
 				dest, err := v2net.ParseDestination(network + ":" + addr)
 				if err != nil {
-					return newError("cannot understand address").Base(err)
+					return errors.New("cannot understand address").Base(err)
 				}
 				trackedCtx := session.TrackedConnectionError(o.ctx, errorCollectorForRequest)
 				conn, err := tagged.Dialer(trackedCtx, dest, outbound)
 				if err != nil {
-					return newError("cannot dial remote address ", dest).Base(err)
+					return errors.New("cannot dial remote address ", dest).Base(err)
 				}
 				connection = conn
 				return nil
 			})
 			if taskErr != nil {
-				return nil, newError("cannot finish connection").Base(taskErr)
+				return nil, errors.New("cannot finish connection").Base(taskErr)
 			}
 			return connection, nil
 		},
@@ -161,7 +162,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		}
 		response, err := httpClient.Get(probeURL)
 		if err != nil {
-			return newError("outbound failed to relay connection").Base(err)
+			return errors.New("outbound failed to relay connection").Base(err)
 		}
 		if response.Body != nil {
 			response.Body.Close()
@@ -171,15 +172,11 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		return nil
 	})
 	if err != nil {
-		fullerr := newError("underlying connection failed").Base(errorCollectorForRequest.UnderlyingError())
+		var errorMessage = "the outbound " + outbound + " is dead: GET request failed:" + err.Error() + "with outbound handler report underlying connection failed"
-		fullerr = newError("with outbound handler report").Base(fullerr)
+		errors.LogInfoInner(o.ctx, errorCollectorForRequest.UnderlyingError(), errorMessage)
-		fullerr = newError("GET request failed:", err).Base(fullerr)
+		return ProbeResult{Alive: false, LastErrorReason: errorMessage}
-		fullerr = newError("the outbound ", outbound, " is dead:").Base(fullerr)
-		fullerr = fullerr.AtInfo()
-		fullerr.WriteToLog()
-		return ProbeResult{Alive: false, LastErrorReason: fullerr.Error()}
 	}
-	newError("the outbound ", outbound, " is alive:", GETTime.Seconds()).AtInfo().WriteToLog()
+	errors.LogInfo(o.ctx, "the outbound ", outbound, " is alive:", GETTime.Seconds())
 	return ProbeResult{Alive: true, Delay: GETTime.Milliseconds()}
 }
 
@@ -222,7 +219,7 @@ func New(ctx context.Context, config *Config) (*Observer, error) {
 		outboundManager = om
 	})
 	if err != nil {
-		return nil, newError("Cannot get depended features").Base(err)
+		return nil, errors.New("Cannot get depended features").Base(err)
 	}
 	return &Observer{
 		config: config,

app/policy/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/policy/config.proto
 
 package policy

app/policy/errors.generated.go

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

app/proxyman/command/command.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 	"github.com/xtls/xray-core/features/outbound"
@@ -26,7 +27,7 @@ type OutboundOperation interface {
 func getInbound(handler inbound.Handler) (proxy.Inbound, error) {
 	gi, ok := handler.(proxy.GetInbound)
 	if !ok {
-		return nil, newError("can't get inbound proxy from handler.")
+		return nil, errors.New("can't get inbound proxy from handler.")
 	}
 	return gi.GetInbound(), nil
 }
@@ -39,11 +40,11 @@ func (op *AddUserOperation) ApplyInbound(ctx context.Context, handler inbound.Ha
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not a UserManager")
+		return errors.New("proxy is not a UserManager")
 	}
 	mUser, err := op.User.ToMemoryUser()
 	if err != nil {
-		return newError("failed to parse user").Base(err)
+		return errors.New("failed to parse user").Base(err)
 	}
 	return um.AddUser(ctx, mUser)
 }
@@ -56,7 +57,7 @@ func (op *RemoveUserOperation) ApplyInbound(ctx context.Context, handler inbound
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not a UserManager")
+		return errors.New("proxy is not a UserManager")
 	}
 	return um.RemoveUser(ctx, op.Email)
 }
@@ -82,16 +83,16 @@ func (s *handlerServer) RemoveInbound(ctx context.Context, request *RemoveInboun
 func (s *handlerServer) AlterInbound(ctx context.Context, request *AlterInboundRequest) (*AlterInboundResponse, error) {
 	rawOperation, err := request.Operation.GetInstance()
 	if err != nil {
-		return nil, newError("unknown operation").Base(err)
+		return nil, errors.New("unknown operation").Base(err)
 	}
 	operation, ok := rawOperation.(InboundOperation)
 	if !ok {
-		return nil, newError("not an inbound operation")
+		return nil, errors.New("not an inbound operation")
 	}
 
 	handler, err := s.ihm.GetHandler(ctx, request.Tag)
 	if err != nil {
-		return nil, newError("failed to get handler: ", request.Tag).Base(err)
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
 	}
 
 	return &AlterInboundResponse{}, operation.ApplyInbound(ctx, handler)
@@ -111,11 +112,11 @@ func (s *handlerServer) RemoveOutbound(ctx context.Context, request *RemoveOutbo
 func (s *handlerServer) AlterOutbound(ctx context.Context, request *AlterOutboundRequest) (*AlterOutboundResponse, error) {
 	rawOperation, err := request.Operation.GetInstance()
 	if err != nil {
-		return nil, newError("unknown operation").Base(err)
+		return nil, errors.New("unknown operation").Base(err)
 	}
 	operation, ok := rawOperation.(OutboundOperation)
 	if !ok {
-		return nil, newError("not an outbound operation")
+		return nil, errors.New("not an outbound operation")
 	}
 
 	handler := s.ohm.GetHandler(request.Tag)

app/proxyman/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/proxyman/command/command.proto
 
 package command

app/proxyman/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
+// - protoc             v5.27.0
 // source: app/proxyman/command/command.proto
 
 package command

app/proxyman/command/errors.generated.go

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

app/proxyman/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/proxyman/config.proto
 
 package proxyman

app/proxyman/inbound/always.go

@@ -55,7 +55,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	}
 	p, ok := rawProxy.(proxy.Inbound)
 	if !ok {
-		return nil, newError("not an inbound proxy.")
+		return nil, errors.New("not an inbound proxy.")
 	}
 
 	h := &AlwaysOnInboundHandler{
@@ -75,7 +75,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 
 	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
 	if err != nil {
-		return nil, newError("failed to parse stream config").Base(err).AtWarning()
+		return nil, errors.New("failed to parse stream config").Base(err).AtWarning()
 	}
 
 	if receiverConfig.ReceiveOriginalDestination {
@@ -89,7 +89,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	}
 	if pl == nil {
 		if net.HasNetwork(nl, net.Network_UNIX) {
-			newError("creating unix domain socket worker on ", address).AtDebug().WriteToLog()
+			errors.LogDebug(ctx, "creating unix domain socket worker on ", address)
 
 			worker := &dsWorker{
 				address:         address,
@@ -109,7 +109,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 		for _, pr := range pl.Range {
 			for port := pr.From; port <= pr.To; port++ {
 				if net.HasNetwork(nl, net.Network_TCP) {
-					newError("creating stream worker on ", address, ":", port).AtDebug().WriteToLog()
+					errors.LogDebug(ctx, "creating stream worker on ", address, ":", port)
 
 					worker := &tcpWorker{
 						address:         address,
@@ -167,7 +167,7 @@ func (h *AlwaysOnInboundHandler) Close() error {
 	}
 	errs = append(errs, h.mux.Close())
 	if err := errors.Combine(errs...); err != nil {
-		return newError("failed to close all resources").Base(err)
+		return errors.New("failed to close all resources").Base(err)
 	}
 	return nil
 }

app/proxyman/inbound/dynamic.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/task"
@@ -46,7 +47,7 @@ func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *p
 
 	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
 	if err != nil {
-		return nil, newError("failed to parse stream settings").Base(err).AtWarning()
+		return nil, errors.New("failed to parse stream settings").Base(err).AtWarning()
 	}
 	if receiverConfig.ReceiveOriginalDestination {
 		if mss.SocketSettings == nil {
@@ -94,7 +95,7 @@ func (h *DynamicInboundHandler) closeWorkers(workers []worker) {
 	for idx, worker := range workers {
 		ports2Del[idx] = worker.Port()
 		if err := worker.Close(); err != nil {
-			newError("failed to close worker").Base(err).WriteToLog()
+			errors.LogInfoInner(h.ctx, err, "failed to close worker")
 		}
 	}
 
@@ -123,7 +124,7 @@ func (h *DynamicInboundHandler) refresh() error {
 		port := h.allocatePort()
 		rawProxy, err := core.CreateObject(h.v, h.proxyConfig)
 		if err != nil {
-			newError("failed to create proxy instance").Base(err).AtWarning().WriteToLog()
+			errors.LogWarningInner(h.ctx, err, "failed to create proxy instance")
 			continue
 		}
 		p := rawProxy.(proxy.Inbound)
@@ -143,7 +144,7 @@ func (h *DynamicInboundHandler) refresh() error {
 				ctx:             h.ctx,
 			}
 			if err := worker.Start(); err != nil {
-				newError("failed to create TCP worker").Base(err).AtWarning().WriteToLog()
+				errors.LogWarningInner(h.ctx, err, "failed to create TCP worker")
 				continue
 			}
 			workers = append(workers, worker)
@@ -163,7 +164,7 @@ func (h *DynamicInboundHandler) refresh() error {
 				ctx:             h.ctx,
 			}
 			if err := worker.Start(); err != nil {
-				newError("failed to create UDP worker").Base(err).AtWarning().WriteToLog()
+				errors.LogWarningInner(h.ctx, err, "failed to create UDP worker")
 				continue
 			}
 			workers = append(workers, worker)

app/proxyman/inbound/errors.generated.go

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

app/proxyman/inbound/inbound.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
@@ -43,7 +44,7 @@ func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error
 	tag := handler.Tag()
 	if len(tag) > 0 {
 		if _, found := m.taggedHandlers[tag]; found {
-			return newError("existing tag found: " + tag)
+			return errors.New("existing tag found: " + tag)
 		}
 		m.taggedHandlers[tag] = handler
 	} else {
@@ -64,7 +65,7 @@ func (m *Manager) GetHandler(ctx context.Context, tag string) (inbound.Handler,
 
 	handler, found := m.taggedHandlers[tag]
 	if !found {
-		return nil, newError("handler not found: ", tag)
+		return nil, errors.New("handler not found: ", tag)
 	}
 	return handler, nil
 }
@@ -80,7 +81,7 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
 
 	if handler, found := m.taggedHandlers[tag]; found {
 		if err := handler.Close(); err != nil {
-			newError("failed to close handler ", tag).Base(err).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+			errors.LogWarningInner(ctx, err, "failed to close handler ", tag)
 		}
 		delete(m.taggedHandlers, tag)
 		return nil
@@ -117,20 +118,20 @@ func (m *Manager) Close() error {
 
 	m.running = false
 
-	var errors []interface{}
+	var errs []interface{}
 	for _, handler := range m.taggedHandlers {
 		if err := handler.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 	for _, handler := range m.untaggedHandler {
 		if err := handler.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
-	if len(errors) > 0 {
+	if len(errs) > 0 {
-		return newError("failed to close all handlers").Base(newError(serial.Concat(errors...)))
+		return errors.New("failed to close all handlers").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil
@@ -150,7 +151,7 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 
 	receiverSettings, ok := rawReceiverSettings.(*proxyman.ReceiverConfig)
 	if !ok {
-		return nil, newError("not a ReceiverConfig").AtError()
+		return nil, errors.New("not a ReceiverConfig").AtError()
 	}
 
 	streamSettings := receiverSettings.StreamSettings
@@ -168,7 +169,7 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 	if allocStrategy.Type == proxyman.AllocationStrategy_Random {
 		return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
 	}
-	return nil, newError("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
+	return nil, errors.New("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
 }
 
 func init() {

app/proxyman/inbound/worker.go

@@ -9,6 +9,8 @@ import (
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	c "github.com/xtls/xray-core/common/ctx"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
@@ -58,16 +60,16 @@ func getTProxyType(s *internet.MemoryStreamConfig) internet.SocketConfig_TProxyM
 func (w *tcpWorker) callback(conn stat.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
-	ctx = session.ContextWithID(ctx, sid)
+	ctx = c.ContextWithID(ctx, sid)
 
-	var outbound = &session.Outbound{}
+	outbounds := []*session.Outbound{{}}
 	if w.recvOrigDest {
 		var dest net.Destination
 		switch getTProxyType(w.stream) {
 		case internet.SocketConfig_Redirect:
 			d, err := tcp.GetOriginalDestination(conn)
 			if err != nil {
-				newError("failed to get original destination").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfoInner(ctx, err, "failed to get original destination")
 			} else {
 				dest = d
 			}
@@ -75,10 +77,10 @@ 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{
@@ -105,7 +107,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_TCP, conn, w.dispatcher); err != nil {
-		newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "connection ends")
 	}
 	cancel()
 	conn.Close()
@@ -121,24 +123,24 @@ func (w *tcpWorker) Start() error {
 		go w.callback(conn)
 	})
 	if err != nil {
-		return newError("failed to listen TCP on ", w.port).AtWarning().Base(err)
+		return errors.New("failed to listen TCP on ", w.port).AtWarning().Base(err)
 	}
 	w.hub = hub
 	return nil
 }
 
 func (w *tcpWorker) Close() error {
-	var errors []interface{}
+	var errs []interface{}
 	if w.hub != nil {
 		if err := common.Close(w.hub); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 		if err := common.Close(w.proxy); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
-	if len(errors) > 0 {
+	if len(errs) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil
@@ -306,13 +308,13 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 		go func() {
 			ctx := w.ctx
 			sid := session.NewID()
-			ctx = session.ContextWithID(ctx, sid)
+			ctx = c.ContextWithID(ctx, sid)
 
+			outbounds := []*session.Outbound{{}}
 			if originalDest.IsValid() {
-				ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+				outbounds[0].Target = originalDest
-					Target: originalDest,
-				})
 			}
+			ctx = session.ContextWithOutbounds(ctx, outbounds)
 			ctx = session.ContextWithInbound(ctx, &session.Inbound{
 				Source:  source,
 				Gateway: net.UDPDestination(w.address, w.port),
@@ -327,7 +329,7 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 			}
 			ctx = session.ContextWithContent(ctx, content)
 			if err := w.proxy.Process(ctx, net.Network_UDP, conn, w.dispatcher); err != nil {
-				newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfoInner(ctx, err, "connection ends")
 			}
 			conn.Close()
 			// conn not removed by checker TODO may be lock worker here is better
@@ -358,7 +360,7 @@ func (w *udpWorker) clean() error {
 	defer w.Unlock()
 
 	if len(w.activeConn) == 0 {
-		return newError("no more connections. stopping...")
+		return errors.New("no more connections. stopping...")
 	}
 
 	for addr, conn := range w.activeConn {
@@ -402,26 +404,26 @@ func (w *udpWorker) Close() error {
 	w.Lock()
 	defer w.Unlock()
 
-	var errors []interface{}
+	var errs []interface{}
 
 	if w.hub != nil {
 		if err := w.hub.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
 	if w.checker != nil {
 		if err := w.checker.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
 	if err := common.Close(w.proxy); err != nil {
-		errors = append(errors, err)
+		errs = append(errs, err)
 	}
 
-	if len(errors) > 0 {
+	if len(errs) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 	return nil
 }
@@ -452,7 +454,7 @@ type dsWorker struct {
 func (w *dsWorker) callback(conn stat.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
-	ctx = session.ContextWithID(ctx, sid)
+	ctx = c.ContextWithID(ctx, sid)
 
 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -479,11 +481,11 @@ func (w *dsWorker) callback(conn stat.Connection) {
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_UNIX, conn, w.dispatcher); err != nil {
-		newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "connection ends")
 	}
 	cancel()
 	if err := conn.Close(); err != nil {
-		newError("failed to close connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "failed to close connection")
 	}
 }
 
@@ -501,24 +503,24 @@ func (w *dsWorker) Start() error {
 		go w.callback(conn)
 	})
 	if err != nil {
-		return newError("failed to listen Unix Domain Socket on ", w.address).AtWarning().Base(err)
+		return errors.New("failed to listen Unix Domain Socket on ", w.address).AtWarning().Base(err)
 	}
 	w.hub = hub
 	return nil
 }
 
 func (w *dsWorker) Close() error {
-	var errors []interface{}
+	var errs []interface{}
 	if w.hub != nil {
 		if err := common.Close(w.hub); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 		if err := common.Close(w.proxy); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
-	if len(errors) > 0 {
+	if len(errs) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil

app/proxyman/outbound/errors.generated.go

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

app/proxyman/outbound/handler.go

@@ -3,9 +3,15 @@ package outbound
 import (
 	"context"
 	"crypto/rand"
-	"errors"
+	goerrors "errors"
+	"io"
+	"math/big"
+	gonet "net"
+	"os"
+
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
@@ -21,10 +27,6 @@ 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) {
@@ -87,11 +89,11 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 			h.senderSettings = s
 			mss, err := internet.ToMemoryStreamConfig(s.StreamSettings)
 			if err != nil {
-				return nil, newError("failed to parse stream settings").Base(err).AtWarning()
+				return nil, errors.New("failed to parse stream settings").Base(err).AtWarning()
 			}
 			h.streamSettings = mss
 		default:
-			return nil, newError("settings is not SenderConfig")
+			return nil, errors.New("settings is not SenderConfig")
 		}
 	}
 
@@ -107,7 +109,7 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 
 	proxyHandler, ok := rawProxyHandler.(proxy.Outbound)
 	if !ok {
-		return nil, newError("not an outbound handler")
+		return nil, errors.New("not an outbound handler")
 	}
 
 	if h.senderSettings != nil && h.senderSettings.MultiplexSettings != nil {
@@ -169,30 +171,31 @@ func (h *Handler) Tag() string {
 
 // Dispatch implements proxy.Outbound.Dispatch.
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
-	outbound := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
-	if outbound.Target.Network == net.Network_UDP && outbound.OriginalTarget.Address != nil && outbound.OriginalTarget.Address != outbound.Target.Address {
+	ob := outbounds[len(outbounds)-1]
-		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
+	if ob.Target.Network == net.Network_UDP && ob.OriginalTarget.Address != nil && ob.OriginalTarget.Address != ob.Target.Address {
-		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.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) {
 			if err != nil {
-				err := newError("failed to process mux outbound traffic").Base(err)
+				err := errors.New("failed to process mux outbound traffic").Base(err)
 				session.SubmitOutboundErrorToOriginator(ctx, err)
-				err.WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfo(ctx, err.Error())
 				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())
+				test(errors.New("XUDP rejected UDP/443 traffic").AtInfo())
 				return
 			case "skip":
 				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
 			}
@@ -207,15 +210,15 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 out:
 	err := h.proxy.Process(ctx, link, h)
 	if err != nil {
-		if errors.Is(err, io.EOF) || errors.Is(err, io.ErrClosedPipe) || errors.Is(err, context.Canceled) {
+		if goerrors.Is(err, io.EOF) || goerrors.Is(err, io.ErrClosedPipe) || goerrors.Is(err, context.Canceled) {
 			err = nil
 		}
 	}
 	if err != nil {
 		// Ensure outbound ray is properly closed.
-		err := newError("failed to process outbound traffic").Base(err)
+		err := errors.New("failed to process outbound traffic").Base(err)
 		session.SubmitOutboundErrorToOriginator(ctx, err)
-		err.WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfo(ctx, err.Error())
 		common.Interrupt(link.Writer)
 	} else {
 		common.Close(link.Writer)
@@ -242,11 +245,12 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 			tag := h.senderSettings.ProxySettings.Tag
 			handler := h.outboundManager.GetHandler(tag)
 			if handler != nil {
-				newError("proxying to ", tag, " for dest ", dest).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+				errors.LogDebug(ctx, "proxying to ", tag, " for dest ", dest)
-				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...)
@@ -262,19 +266,16 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 				return h.getStatCouterConnection(conn), nil
 			}
 
-			newError("failed to get outbound handler with tag: ", tag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+			errors.LogWarning(ctx, "failed to get outbound handler with tag: ", tag)
 		}
 
 		if h.senderSettings.Via != nil {
-			outbound := session.OutboundFromContext(ctx)
+			outbounds := session.OutboundsFromContext(ctx)
-			if outbound == nil {
+			ob := outbounds[len(outbounds)-1]
-				outbound = new(session.Outbound)
-				ctx = session.ContextWithOutbound(ctx, outbound)
-			}
 			if h.senderSettings.ViaCidr == "" {
-				outbound.Gateway = h.senderSettings.Via.AsAddress()
+				ob.Gateway = h.senderSettings.Via.AsAddress()
 			} else { //Get a random address.
-				outbound.Gateway = ParseRandomIPv6(h.senderSettings.Via.AsAddress(), h.senderSettings.ViaCidr)
+				ob.Gateway = ParseRandomIPv6(h.senderSettings.Via.AsAddress(), h.senderSettings.ViaCidr)
 			}
 		}
 	}
@@ -285,10 +286,9 @@ 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)
+	outbounds := session.OutboundsFromContext(ctx)
-	if outbound != nil {
+	ob := outbounds[len(outbounds)-1]
-		outbound.Conn = conn
+	ob.Conn = conn
-	}
 	return conn, err
 }
 
@@ -319,7 +319,6 @@ func (h *Handler) Close() error {
 	return nil
 }
 
-
 func ParseRandomIPv6(address net.Address, prefix string) net.Address {
 	_, network, _ := gonet.ParseCIDR(address.IP().String() + "/" + prefix)
 

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{}),

app/proxyman/outbound/outbound.go

@@ -115,7 +115,7 @@ func (m *Manager) AddHandler(ctx context.Context, handler outbound.Handler) erro
 	tag := handler.Tag()
 	if len(tag) > 0 {
 		if _, found := m.taggedHandler[tag]; found {
-			return newError("existing tag found: " + tag)
+			return errors.New("existing tag found: " + tag)
 		}
 		m.taggedHandler[tag] = handler
 	} else {

app/proxyman/outbound/uot.go

@@ -5,6 +5,7 @@ import (
 	"os"
 
 	"github.com/sagernet/sing/common/uot"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/stat"
@@ -12,7 +13,7 @@ import (
 
 func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (stat.Connection, error) {
 	if dest.Address == nil {
-		return nil, newError("nil destination address")
+		return nil, errors.New("nil destination address")
 	}
 	if !dest.Address.Family().IsDomain() {
 		return nil, os.ErrInvalid
@@ -27,7 +28,7 @@ func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (s
 	}
 	packetConn, err := internet.ListenSystemPacket(ctx, &net.UDPAddr{IP: net.AnyIP.IP(), Port: 0}, h.streamSettings.SocketSettings)
 	if err != nil {
-		return nil, newError("unable to listen socket").Base(err)
+		return nil, errors.New("unable to listen socket").Base(err)
 	}
 	conn := uot.NewServerConn(packetConn, uotVersion)
 	return h.getStatCouterConnection(conn), nil

app/reverse/bridge.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"time"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
@@ -26,10 +27,10 @@ type Bridge struct {
 // NewBridge creates a new Bridge instance.
 func NewBridge(config *BridgeConfig, dispatcher routing.Dispatcher) (*Bridge, error) {
 	if config.Tag == "" {
-		return nil, newError("bridge tag is empty")
+		return nil, errors.New("bridge tag is empty")
 	}
 	if config.Domain == "" {
-		return nil, newError("bridge domain is empty")
+		return nil, errors.New("bridge domain is empty")
 	}
 
 	b := &Bridge{
@@ -74,7 +75,7 @@ func (b *Bridge) monitor() error {
 	if numWorker == 0 || numConnections/numWorker > 16 {
 		worker, err := NewBridgeWorker(b.domain, b.tag, b.dispatcher)
 		if err != nil {
-			newError("failed to create bridge worker").Base(err).AtWarning().WriteToLog()
+			errors.LogWarningInner(context.Background(), err, "failed to create bridge worker")
 			return nil
 		}
 		b.workers = append(b.workers, worker)
@@ -157,7 +158,7 @@ func (w *BridgeWorker) handleInternalConn(link *transport.Link) {
 			for _, b := range mb {
 				var ctl Control
 				if err := proto.Unmarshal(b.Bytes(), &ctl); err != nil {
-					newError("failed to parse proto message").Base(err).WriteToLog()
+					errors.LogInfoInner(context.Background(), err, "failed to parse proto message")
 					break
 				}
 				if ctl.State != w.state {

app/reverse/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/reverse/config.proto
 
 package reverse

app/reverse/errors.generated.go

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

app/reverse/portal.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
@@ -27,11 +28,11 @@ type Portal struct {
 
 func NewPortal(config *PortalConfig, ohm outbound.Manager) (*Portal, error) {
 	if config.Tag == "" {
-		return nil, newError("portal tag is empty")
+		return nil, errors.New("portal tag is empty")
 	}
 
 	if config.Domain == "" {
-		return nil, newError("portal domain is empty")
+		return nil, errors.New("portal domain is empty")
 	}
 
 	picker, err := NewStaticMuxPicker()
@@ -62,20 +63,21 @@ func (p *Portal) Close() error {
 }
 
 func (p *Portal) HandleConnection(ctx context.Context, link *transport.Link) error {
-	outboundMeta := session.OutboundFromContext(ctx)
+	outbounds := session.OutboundsFromContext(ctx)
-	if outboundMeta == nil {
+	ob := outbounds[len(outbounds)-1]
-		return newError("outbound metadata not found").AtError()
+	if ob == nil {
+		return errors.New("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()
+			return errors.New("failed to create mux client worker").Base(err).AtWarning()
 		}
 
 		worker, err := NewPortalWorker(muxClient)
 		if err != nil {
-			return newError("failed to create portal worker").Base(err)
+			return errors.New("failed to create portal worker").Base(err)
 		}
 
 		p.picker.AddWorker(worker)
@@ -96,7 +98,7 @@ func (o *Outbound) Tag() string {
 
 func (o *Outbound) Dispatch(ctx context.Context, link *transport.Link) {
 	if err := o.portal.HandleConnection(ctx, link); err != nil {
-		newError("failed to process reverse connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "failed to process reverse connection")
 		common.Interrupt(link.Writer)
 	}
 }
@@ -148,7 +150,7 @@ func (p *StaticMuxPicker) PickAvailable() (*mux.ClientWorker, error) {
 	defer p.access.Unlock()
 
 	if len(p.workers) == 0 {
-		return nil, newError("empty worker list")
+		return nil, errors.New("empty worker list")
 	}
 
 	var minIdx int = -1
@@ -182,7 +184,7 @@ func (p *StaticMuxPicker) PickAvailable() (*mux.ClientWorker, error) {
 		return p.workers[minIdx].client, nil
 	}
 
-	return nil, newError("no mux client worker available")
+	return nil, errors.New("no mux client worker available")
 }
 
 func (p *StaticMuxPicker) AddWorker(worker *PortalWorker) {
@@ -206,15 +208,16 @@ 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,
 	})
 	if !f {
-		return nil, newError("unable to dispatch control connection")
+		return nil, errors.New("unable to dispatch control connection")
 	}
 	w := &PortalWorker{
 		client: client,
@@ -231,11 +234,11 @@ func NewPortalWorker(client *mux.ClientWorker) (*PortalWorker, error) {
 
 func (w *PortalWorker) heartbeat() error {
 	if w.client.Closed() {
-		return newError("client worker stopped")
+		return errors.New("client worker stopped")
 	}
 
 	if w.draining || w.writer == nil {
-		return newError("already disposed")
+		return errors.New("already disposed")
 	}
 
 	msg := &Control{}

app/router/balancing.go

@@ -4,6 +4,10 @@ import (
 	"context"
 	sync "sync"
 
+	"github.com/xtls/xray-core/app/observatory"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 )
@@ -17,14 +21,58 @@ 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()
@@ -48,7 +96,7 @@ func (b *Balancer) PickOutbound() (string, error) {
 	candidates, err := b.SelectOutbounds()
 	if err != nil {
 		if b.fallbackTag != "" {
-			newError("fallback to [", b.fallbackTag, "], due to error: ", err).AtInfo().WriteToLog()
+			errors.LogInfo(context.Background(), "fallback to [", b.fallbackTag, "], due to error: ", err)
 			return b.fallbackTag, nil
 		}
 		return "", err
@@ -61,11 +109,11 @@ func (b *Balancer) PickOutbound() (string, error) {
 	}
 	if tag == "" {
 		if b.fallbackTag != "" {
-			newError("fallback to [", b.fallbackTag, "], due to empty tag returned").AtInfo().WriteToLog()
+			errors.LogInfo(context.Background(), "fallback to [", b.fallbackTag, "], due to empty tag returned")
 			return b.fallbackTag, nil
 		}
 		// will use default handler
-		return "", newError("balancing strategy returns empty tag")
+		return "", errors.New("balancing strategy returns empty tag")
 	}
 	return tag, nil
 }
@@ -80,7 +128,7 @@ func (b *Balancer) InjectContext(ctx context.Context) {
 func (b *Balancer) SelectOutbounds() ([]string, error) {
 	hs, ok := b.ohm.(outbound.HandlerSelector)
 	if !ok {
-		return nil, newError("outbound.Manager is not a HandlerSelector")
+		return nil, errors.New("outbound.Manager is not a HandlerSelector")
 	}
 	tags := hs.Select(b.selectors)
 	return tags, nil
@@ -92,13 +140,13 @@ func (r *Router) GetPrincipleTarget(tag string) ([]string, error) {
 		if s, ok := b.strategy.(BalancingPrincipleTarget); ok {
 			candidates, err := b.SelectOutbounds()
 			if err != nil {
-				return nil, newError("unable to select outbounds").Base(err)
+				return nil, errors.New("unable to select outbounds").Base(err)
 			}
 			return s.GetPrincipleTarget(candidates), nil
 		}
-		return nil, newError("unsupported GetPrincipleTarget")
+		return nil, errors.New("unsupported GetPrincipleTarget")
 	}
-	return nil, newError("cannot find tag")
+	return nil, errors.New("cannot find tag")
 }
 
 // SetOverrideTarget implements routing.BalancerOverrider
@@ -107,7 +155,7 @@ func (r *Router) SetOverrideTarget(tag, target string) error {
 		b.override.Put(target)
 		return nil
 	}
-	return newError("cannot find tag")
+	return errors.New("cannot find tag")
 }
 
 // GetOverrideTarget implements routing.BalancerOverrider
@@ -115,5 +163,5 @@ func (r *Router) GetOverrideTarget(tag string) (string, error) {
 	if b, ok := r.balancers[tag]; ok {
 		return b.override.Get(), nil
 	}
-	return "", newError("cannot find tag")
+	return "", errors.New("cannot find tag")
 }

app/router/balancing_override.go

@@ -2,6 +2,8 @@ package router
 
 import (
 	sync "sync"
+
+	"github.com/xtls/xray-core/common/errors"
 )
 
 func (r *Router) OverrideBalancer(balancer string, target string) error {
@@ -13,7 +15,7 @@ func (r *Router) OverrideBalancer(balancer string, target string) error {
 		}
 	}
 	if b == nil {
-		return newError("balancer '", balancer, "' not found")
+		return errors.New("balancer '", balancer, "' not found")
 	}
 	b.override.Put(target)
 	return nil

app/router/command/command.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/features/stats"
@@ -38,7 +39,7 @@ func (s *routingServer) GetBalancerInfo(ctx context.Context, request *GetBalance
 		{
 			res, err := pt.GetPrincipleTarget(request.GetTag())
 			if err != nil {
-				newError("unable to obtain principle target").Base(err).AtInfo().WriteToLog()
+				errors.LogInfoInner(ctx, err, "unable to obtain principle target")
 			} else {
 				ret.Balancer.PrincipleTarget = &PrincipleTargetInfo{Tag: res}
 			}
@@ -51,21 +52,21 @@ func (s *routingServer) OverrideBalancerTarget(ctx context.Context, request *Ove
 	if bo, ok := s.router.(routing.BalancerOverrider); ok {
 		return &OverrideBalancerTargetResponse{}, bo.SetOverrideTarget(request.BalancerTag, request.Target)
 	}
-	return nil, newError("unsupported router implementation")
+	return nil, errors.New("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")
+	return nil, errors.New("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")
+	return nil, errors.New("unsupported router implementation")
 }
 
 // NewRoutingServer creates a statistics service with statistics manager.
@@ -78,7 +79,7 @@ func NewRoutingServer(router routing.Router, routingStats stats.Channel) Routing
 
 func (s *routingServer) TestRoute(ctx context.Context, request *TestRouteRequest) (*RoutingContext, error) {
 	if request.RoutingContext == nil {
-		return nil, newError("Invalid routing request.")
+		return nil, errors.New("Invalid routing request.")
 	}
 	route, err := s.router.PickRoute(AsRoutingContext(request.RoutingContext))
 	if err != nil {
@@ -93,7 +94,7 @@ func (s *routingServer) TestRoute(ctx context.Context, request *TestRouteRequest
 
 func (s *routingServer) SubscribeRoutingStats(request *SubscribeRoutingStatsRequest, stream RoutingService_SubscribeRoutingStatsServer) error {
 	if s.routingStats == nil {
-		return newError("Routing statistics not enabled.")
+		return errors.New("Routing statistics not enabled.")
 	}
 	genMessage := AsProtobufMessage(request.FieldSelectors)
 	subscriber, err := stats.SubscribeRunnableChannel(s.routingStats)
@@ -105,11 +106,11 @@ func (s *routingServer) SubscribeRoutingStats(request *SubscribeRoutingStatsRequ
 		select {
 		case value, ok := <-subscriber:
 			if !ok {
-				return newError("Upstream closed the subscriber channel.")
+				return errors.New("Upstream closed the subscriber channel.")
 			}
 			route, ok := value.(routing.Route)
 			if !ok {
-				return newError("Upstream sent malformed statistics.")
+				return errors.New("Upstream sent malformed statistics.")
 			}
 			err := stream.Send(genMessage(route))
 			if err != nil {

app/router/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/router/command/command.proto
 
 package command

app/router/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
+// - protoc             v5.27.0
 // source: app/router/command/command.proto
 
 package command

app/router/command/command_test.go

@@ -272,7 +272,7 @@ func TestServiceSubscribeSubsetOfFields(t *testing.T) {
 	}
 }
 
-func TestSerivceTestRoute(t *testing.T) {
+func TestServiceTestRoute(t *testing.T) {
 	c := stats.NewChannel(&stats.ChannelConfig{
 		SubscriberLimit: 1,
 		BufferSize:      16,

app/router/command/errors.generated.go

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

app/router/condition.go

@@ -4,6 +4,7 @@ import (
 	"regexp"
 	"strings"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/features/routing"
@@ -49,12 +50,12 @@ var matcherTypeMap = map[Domain_Type]strmatcher.Type{
 func domainToMatcher(domain *Domain) (strmatcher.Matcher, error) {
 	matcherType, f := matcherTypeMap[domain.Type]
 	if !f {
-		return nil, newError("unsupported domain type", domain.Type)
+		return nil, errors.New("unsupported domain type", domain.Type)
 	}
 
 	matcher, err := matcherType.New(domain.Value)
 	if err != nil {
-		return nil, newError("failed to create domain matcher").Base(err)
+		return nil, errors.New("failed to create domain matcher").Base(err)
 	}
 
 	return matcher, nil
@@ -69,7 +70,7 @@ func NewMphMatcherGroup(domains []*Domain) (*DomainMatcher, error) {
 	for _, d := range domains {
 		matcherType, f := matcherTypeMap[d.Type]
 		if !f {
-			return nil, newError("unsupported domain type", d.Type)
+			return nil, errors.New("unsupported domain type", d.Type)
 		}
 		_, err := g.AddPattern(d.Value, matcherType)
 		if err != nil {

app/router/config.go

@@ -1,9 +1,11 @@
 package router
 
 import (
+	"context"
 	"regexp"
 	"strings"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/routing"
@@ -36,7 +38,7 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 		case "linear":
 			matcher, err := NewDomainMatcher(rr.Domain)
 			if err != nil {
-				return nil, newError("failed to build domain condition").Base(err)
+				return nil, errors.New("failed to build domain condition").Base(err)
 			}
 			conds.Add(matcher)
 		case "mph", "hybrid":
@@ -44,9 +46,9 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 		default:
 			matcher, err := NewMphMatcherGroup(rr.Domain)
 			if err != nil {
-				return nil, newError("failed to build domain condition with MphDomainMatcher").Base(err)
+				return nil, errors.New("failed to build domain condition with MphDomainMatcher").Base(err)
 			}
-			newError("MphDomainMatcher is enabled for ", len(rr.Domain), " domain rule(s)").AtDebug().WriteToLog()
+			errors.LogDebug(context.Background(), "MphDomainMatcher is enabled for ", len(rr.Domain), " domain rule(s)")
 			conds.Add(matcher)
 		}
 	}
@@ -116,7 +118,7 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}
 
 	if conds.Len() == 0 {
-		return nil, newError("this rule has no effective fields").AtWarning()
+		return nil, errors.New("this rule has no effective fields").AtWarning()
 	}
 
 	return conds, nil
@@ -135,7 +137,7 @@ func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatch
 	case "roundrobin":
 		return &Balancer{
 			selectors:   br.OutboundSelector,
-			strategy:    &RoundRobinStrategy{},
+			strategy:    &RoundRobinStrategy{FallbackTag: br.FallbackTag},
 			fallbackTag: br.FallbackTag,
 			ohm:         ohm,
 		}, nil
@@ -146,7 +148,7 @@ func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatch
 		}
 		s, ok := i.(*StrategyLeastLoadConfig)
 		if !ok {
-			return nil, newError("not a StrategyLeastLoadConfig").AtError()
+			return nil, errors.New("not a StrategyLeastLoadConfig").AtError()
 		}
 		leastLoadStrategy := NewLeastLoadStrategy(s)
 		return &Balancer{
@@ -162,9 +164,9 @@ func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatch
 			selectors:   br.OutboundSelector,
 			ohm:         ohm,
 			fallbackTag: br.FallbackTag,
-			strategy:    &RandomStrategy{},
+			strategy:    &RandomStrategy{FallbackTag: br.FallbackTag},
 		}, nil
 	default:
-		return nil, newError("unrecognized balancer type")
+		return nil, errors.New("unrecognized balancer type")
 	}
 }

app/router/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/router/config.proto
 
 package router

app/router/errors.generated.go

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

app/router/router.go

@@ -7,6 +7,7 @@ import (
 	sync "sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
@@ -68,7 +69,7 @@ func (r *Router) Init(ctx context.Context, config *Config, d dns.Client, ohm out
 		if len(btag) > 0 {
 			brule, found := r.balancers[btag]
 			if !found {
-				return newError("balancer ", btag, " not found")
+				return errors.New("balancer ", btag, " not found")
 			}
 			rr.Balancer = brule
 		}
@@ -101,7 +102,7 @@ func (r *Router) AddRule(config *serial.TypedMessage, shouldAppend bool) error {
 	if c, ok := inst.(*Config); ok {
 		return r.ReloadRules(c, shouldAppend)
 	}
-	return newError("AddRule: config type error")
+	return errors.New("AddRule: config type error")
 }
 
 func (r *Router) ReloadRules(config *Config, shouldAppend bool) error {
@@ -115,7 +116,7 @@ func (r *Router) ReloadRules(config *Config, shouldAppend bool) error {
 	for _, rule := range config.BalancingRule {
 		_, found := r.balancers[rule.Tag]
 		if found {
-			return newError("duplicate balancer tag")
+			return errors.New("duplicate balancer tag")
 		}
 		balancer, err := rule.Build(r.ohm, r.dispatcher)
 		if err != nil {
@@ -127,7 +128,7 @@ func (r *Router) ReloadRules(config *Config, shouldAppend bool) error {
 
 	for _, rule := range config.Rule {
 		if r.RuleExists(rule.GetRuleTag()) {
-			return newError("duplicate ruleTag ", rule.GetRuleTag())
+			return errors.New("duplicate ruleTag ", rule.GetRuleTag())
 		}
 		cond, err := rule.BuildCondition()
 		if err != nil {
@@ -142,7 +143,7 @@ func (r *Router) ReloadRules(config *Config, shouldAppend bool) error {
 		if len(btag) > 0 {
 			brule, found := r.balancers[btag]
 			if !found {
-				return newError("balancer ", btag, " not found")
+				return errors.New("balancer ", btag, " not found")
 			}
 			rr.Balancer = brule
 		}
@@ -178,7 +179,7 @@ func (r *Router) RemoveRule(tag string) error {
 		r.rules = newRules
 		return nil
 	}
-	return newError("empty tag name!")
+	return errors.New("empty tag name!")
 
 }
 func (r *Router) pickRouteInternal(ctx routing.Context) (*Rule, routing.Context, error) {

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" {

app/router/strategy_leastload.go

@@ -9,6 +9,7 @@ import (
 	"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/common/errors"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 )
@@ -95,7 +96,7 @@ func (s *LeastLoadStrategy) pickOutbounds(candidates []string) []*node {
 // with 'balancer.fallbackTag', it means: selects qualified nodes or use the fallback.
 func (s *LeastLoadStrategy) selectLeastLoad(nodes []*node) []*node {
 	if len(nodes) == 0 {
-		newError("least load: no qualified outbound").AtInfo().WriteToLog()
+		errors.LogInfo(s.ctx, "least load: no qualified outbound")
 		return nil
 	}
 	expected := int(s.settings.Expected)
@@ -123,7 +124,7 @@ func (s *LeastLoadStrategy) selectLeastLoad(nodes []*node) []*node {
 		}
 		// don't continue if find expected selects
 		if count >= expected {
-			newError("applied baseline: ", baseline).AtDebug().WriteToLog()
+			errors.LogDebug(s.ctx, "applied baseline: ", baseline)
 			break
 		}
 	}
@@ -142,7 +143,7 @@ func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration)
 	}
 	observeResult, err := s.observer.GetObservation(s.ctx)
 	if err != nil {
-		newError("cannot get observation").Base(err).WriteToLog()
+		errors.LogInfoInner(s.ctx, err, "cannot get observation")
 		return make([]*node, 0)
 	}
 

app/router/strategy_leastping.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/xtls/xray-core/app/observatory"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 )
@@ -32,7 +33,7 @@ func (l *LeastPingStrategy) PickOutbound(strings []string) string {
 
 	observeReport, err := l.observatory.GetObservation(l.ctx)
 	if err != nil {
-		newError("cannot get observe report").Base(err).WriteToLog()
+		errors.LogInfoInner(l.ctx, err, "cannot get observe report")
 		return ""
 	}
 	outboundsList := outboundList(strings)

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

app/router/weight.go

@@ -1,10 +1,13 @@
 package router
 
 import (
+	"context"
 	"regexp"
 	"strconv"
 	"strings"
 	"sync"
+
+	"github.com/xtls/xray-core/common/errors"
 )
 
 type weightScaler func(value, weight float64) float64
@@ -64,7 +67,7 @@ func (s *WeightManager) findValue(tag string) float64 {
 		}
 		weight, err := strconv.ParseFloat(numStr, 64)
 		if err != nil {
-			newError("unexpected error from ParseFloat: ", err).AtError().WriteToLog()
+			errors.LogError(context.Background(), "unexpected error from ParseFloat: ", err)
 			return s.defaultWeight
 		}
 		return weight
@@ -82,7 +85,7 @@ func (s *WeightManager) getMatch(tag, find string, isRegexp bool) string {
 	}
 	r, err := regexp.Compile(find)
 	if err != nil {
-		newError("invalid regexp: ", find, "err: ", err).AtError().WriteToLog()
+		errors.LogError(context.Background(), "invalid regexp: ", find, "err: ", err)
 		return ""
 	}
 	return r.FindString(tag)

app/stats/channel.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 )
 
 // Channel is an implementation of stats.Channel.
@@ -44,7 +45,7 @@ func (c *Channel) Subscribe() (chan interface{}, error) {
 	c.access.Lock()
 	defer c.access.Unlock()
 	if c.subsLimit > 0 && len(c.subscribers) >= c.subsLimit {
-		return nil, newError("Number of subscribers has reached limit")
+		return nil, errors.New("Number of subscribers has reached limit")
 	}
 	subscriber := make(chan interface{}, c.bufferSize)
 	c.subscribers = append(c.subscribers, subscriber)

app/stats/channel_test.go

@@ -95,7 +95,7 @@ func TestStatsChannel(t *testing.T) {
 	}
 }
 
-func TestStatsChannelUnsubcribe(t *testing.T) {
+func TestStatsChannelUnsubscribe(t *testing.T) {
 	c := NewChannel(&ChannelConfig{Blocking: true})
 	common.Must(c.Start())
 	defer c.Close()

app/stats/command/command.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/core"
 	feature_stats "github.com/xtls/xray-core/features/stats"
@@ -31,7 +32,7 @@ func NewStatsServer(manager feature_stats.Manager) StatsServiceServer {
 func (s *statsServer) GetStats(ctx context.Context, request *GetStatsRequest) (*GetStatsResponse, error) {
 	c := s.stats.GetCounter(request.Name)
 	if c == nil {
-		return nil, newError(request.Name, " not found.")
+		return nil, errors.New(request.Name, " not found.")
 	}
 	var value int64
 	if request.Reset_ {
@@ -57,7 +58,7 @@ func (s *statsServer) QueryStats(ctx context.Context, request *QueryStatsRequest
 
 	manager, ok := s.stats.(*stats.Manager)
 	if !ok {
-		return nil, newError("QueryStats only works its own stats.Manager.")
+		return nil, errors.New("QueryStats only works its own stats.Manager.")
 	}
 
 	manager.VisitCounters(func(name string, c feature_stats.Counter) bool {

app/stats/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.33.0
+// 	protoc-gen-go v1.34.1
-// 	protoc        v4.23.1
+// 	protoc        v5.27.0
 // source: app/stats/command/command.proto
 
 package command

app/stats/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
+// - protoc             v5.27.0
 // source: app/stats/command/command.proto
 
 package command

app/stats/command/errors.generated.go

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