Update config.yaml

Add links
Chore: add issues config (#344 )
2025-08-22 17:46:48 +08:00 · 2021-03-20 18:22:06 +08:00 · 2021-03-16 19:25:42 +08:00 · 2021-03-07 14:09:59 +08:00 · 2021-03-07 12:56:52 +08:00 · 2021-03-07 12:51:54 +08:00
368 changed files with 4011 additions and 9893 deletions
--- a/.github/ISSUE_TEMPLATE/bug-en.md
+++ b/.github/ISSUE_TEMPLATE/bug-en.md
@@ -0,0 +1,92 @@
+---
+name: Bug Report
+about: Create a bug report of Xray.
+title: '[Bug] <bug you are reporting>'
+labels: ''
+assignees: ''
+
+---
+
+<!-- Thanks for your reporting.
+1. Please make sure you are submitting a bug of Xray-Core instead of acquiring usage or bug in third-party programs. If you are not sure, please contact us in our official Telegram group.
+2. Bug: **An error, flaw or fault in a program ** that causes it to produce an incorrect or unexpected result. (Reference: Wikipedia)
+3. Please check existing Issues and Discussions first and read the documentation in detail. Duplicated issues will be closed.
+4. Please don't report issue like "I can't use a feature". It's probably your own mistake.
+5. You should fully complete the following contents or this issue may not be handled.
+6. Please *make sure* the content you are submitting does not contain your private information.
+-->
+
+
+**Describe the bug**
+<!-- A clear and concise description of what the bug is. -->
+
+**To Reproduce**
+<!-- Steps to reproduce the bug: -->
+1.
+2.
+3.
+4.
+
+**Expected behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Client Log**
+
+<details>
+
+```
+Please paste your client log here:
+
+
+```
+
+</details>
+
+**Server Log**
+
+<details>
+
+```
+Please paste your server log here:
+
+
+```
+
+</details>
+
+**Client config**
+
+<details>
+
+```json
+Please paste your client config file here:
+
+
+```
+
+</details>
+
+**Server Config**
+
+<details>
+
+```json
+Please paste your server config file here:
+
+
+```
+
+</details>
+
+**Client Information**
+ - OS: [e.g. Windows 10]
+ - Xray version [e.g. 1.3.1]
+ - Xray installing approach：[e.g. Xray-install]
+
+**Server Information**
+- OS: [e.g. Windows 10]
+- Xray version [e.g. 1.3.1]
+- Xray installing approach：[e.g. Xray-install]
+
+**Additional Information**
+<!-- Add any other information about the problem here. -->
--- a/.github/ISSUE_TEMPLATE/bug-zh-CN.md
+++ b/.github/ISSUE_TEMPLATE/bug-zh-CN.md
@@ -0,0 +1,91 @@
+---
+name: Bug 反馈
+about: 这是 Xray 的一个 bug。
+title: '[Bug] 你发现的bug'
+labels: ''
+assignees: ''
+
+---
+
+<!-- 感谢您的反馈！
+1. 请先确认您提交的是 Xray-Core 的 Bug，而非使用咨询，抑或是第三方程序的 Bug。如果您不确定，请在 Telegram 群中反馈。
+2. Bug：软件运行中因为 **程序本身有错误** 而造成的功能不正常。(Reference: Wikipedia)
+3. 请先查询已有的 Issues 与 Discussions ，并且详细阅读文档的相关内容。如果您提出的是已知的问题，此 issue 将有可能被关闭。
+4. 请不要轻易提出类似“不能使用某功能”的问题。这往往是你自己的问题。
+5. 您需要完整地完成下列内容，否则此 issue 可能不会被处理。
+6. 请 *务必* 确保不包含任何个人隐私信息。
+-->
+
+**问题描述**
+<!-- 请清晰简洁地描述此问题。-->
+
+**复现方式**
+<!-- 复现此步骤的过程: -->
+1.
+2.
+3.
+4.
+
+**预期行为**
+<!-- 请清晰简洁地描述您期望的的行为。-->
+
+**客户端日志**
+
+<details>
+
+```
+请删除此行，并在此处粘贴客户端日志
+
+
+```
+
+</details>
+
+**服务端日志**
+
+<details>
+
+```
+请删除此行，并在此处粘贴服务端日志
+
+
+```
+
+</details>
+
+**客户端配置**
+
+<details>
+
+```json
+请删除此行，并在此处粘贴客户端配置
+
+
+```
+
+</details>
+
+**服务端配置**
+
+<details>
+
+```json
+请删除此行，并在此处粘贴服务端日志
+
+
+```
+
+</details>
+
+**客户端环境**
+ - 系统与版本: [如 Windows 10]
+ - Xray 版本 [如 1.3.1]
+ - Xray 安装方式：[如 Xray-install]
+
+**服务端环境**
+ - 系统与版本: [如 Windows 10]
+ - Xray 版本 [如 1.3.1]
+ - Xray 安装方式：[如 Xray-install]
+
+**附加信息**
+<!-- 如果您有额外的信息，请在此处说明。-->
--- a/.github/ISSUE_TEMPLATE/config.yaml
+++ b/.github/ISSUE_TEMPLATE/config.yaml
@@ -0,0 +1,9 @@
+contact_links:
+  - name: 加入 Telegram 群组 / Join Telegram Group
+    url: https://t.me/projectXray
+  - name: 官方文档 / Official Document
+    url: https://xtls.github.io/
+  - name: 安装脚本 / Installing Script
+    url: https://github.com/XTLS/Xray-install
+  - name: 示例配置 / Example Config
+    url: https://github.com/XTLS/Xray-examples
--- a/.github/ISSUE_TEMPLATE/feature-en.md
+++ b/.github/ISSUE_TEMPLATE/feature-en.md
@@ -0,0 +1,32 @@
+---
+name: Feature Request
+about: Suggest an idea for Xray
+title: '[Feature] your idea'
+labels: ''
+assignees: ''
+
+---
+
+<!-- Thanks for your support!
+1. Please confirm that you are submitting a feature request.
+2. We do not recommend any inexperienced users to request a new feature. 
+3. Please check existing Issues and Discussions first and read the documentation in detail. Duplicated issues will be closed
+4. To be clear: none of developers is obliged to meet your needs. In particular, features that do not make any sense.
+5. You should fully complete the following contents.
+-->
+
+**What's your idea？**
+<!-- A clear and concise description of your idea. -->
+
+**Is it related to an issue?**
+<!-- Please specify here if yes. -->
+
+**What's your solution?**
+<!-- Describe the solution you'd like. -->
+1. 
+2. 
+3. 
+4. 
+
+**Is there any additional information?**
+<!-- Add any other information here. -->
--- a/.github/ISSUE_TEMPLATE/feature-zh-CN.md
+++ b/.github/ISSUE_TEMPLATE/feature-zh-CN.md
@@ -0,0 +1,32 @@
+---
+name: 功能请求
+about: 希望 Xray 添加一个新功能。
+title: '[Feature] 你的想法'
+labels: ''
+assignees: ''
+
+---
+
+<!-- 感谢您的反馈！
+1. 请先确认您提交的是功能请求。
+2. 我们不建议缺少经验的用户提出功能请求。
+3. 请先查询已有的 Issues 与 Discussions ，并且详细阅读文档的相关内容。重复的 issue 将有可能被关闭。
+4. 需要向您明确一点：任何开发者均没有义务满足您的需求。特别是不合理或没有意义的功能。
+5. 您需要完整地完成下列内容，否则此 issue 可能不会被处理。
+-->
+
+**您的想法是什么？**
+<!-- 请清晰简洁地描述您预期中的功能。-->
+
+**是否与已知的 issue 相关？**
+<!-- 如果是，请在此注明 -->
+
+**您认为应如何实现此功能？**
+<!-- 请清晰简洁地描述如何实现此功能。-->
+1. 
+2. 
+3. 
+4. 
+
+**有没有额外的信息？**
+<!-- 如果您有额外的信息，请在此处说明。-->
--- a/.github/ISSUE_TEMPLATE/question-en.md
+++ b/.github/ISSUE_TEMPLATE/question-en.md
@@ -0,0 +1,17 @@
+---
+name: Question
+about: Question of Xray.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Thanks for your support！
+1. Issue is **NOT** a proper place to ask a question, otherwise your issue may be closed.
+2. Please check existing Issues, Discussions and documentation in detail first. You may find the answers you want before you ask the question.
+3. If it is still not resolved, please give feedback in the our official Telegram group or Discussions.
+4. Wherever you ask a question, please *make sure* the content does not contain your private information.
+5. We highly recommend you to read https://github.com/tvvocold/How-To-Ask-Questions-The-Smart-Way.
+-->
+
--- a/.github/ISSUE_TEMPLATE/question-zh-CN.md
+++ b/.github/ISSUE_TEMPLATE/question-zh-CN.md
@@ -0,0 +1,17 @@
+---
+name: 使用疑问
+about: 使用 Xray 时的疑问。
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- 感谢您的支持！
+1. Issue **不是**用来提问的, 否则将可能会被 close。
+2. 请先查询已有的 issue、discussion ，并且详细阅读文档的相关内容。那里可能有您需要的答案。
+3. 如果仍未解决，请在官方 Telegram 群中或 Discussion 区反馈。
+4. 无论在何处提问，请 *务必确保* 其不包含任何个人隐私信息。
+5. 我们强烈推荐您阅读 https://github.com/tvvocold/How-To-Ask-Questions-The-Smart-Way。
+-->
+
--- a/.github/build/friendly-filenames.json
+++ b/.github/build/friendly-filenames.json
@@ -29,6 +29,5 @@
  "openbsd-arm7": { "friendlyName": "openbsd-arm32-v7a" },
  "windows-386": { "friendlyName": "windows-32" },
  "windows-amd64": { "friendlyName": "windows-64" },
-  "windows-arm64": { "friendlyName": "windows-arm64-v8a" },
  "windows-arm7": { "friendlyName": "windows-arm32-v7a" }
-}
+}
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,11 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-  - package-ecosystem: "gomod"
-    directory: "/" # Location of package manifests
-    schedule:
-      interval: "daily"
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -52,9 +52,7 @@ jobs:
          - goos: android
            goarch: arm64
          # END Android ARM 8
-          # Windows ARM
-          - goos: windows
-            goarch: arm64
+          # Windows ARM 7
          - goos: windows
            goarch: arm
            goarm: 7
@@ -123,7 +121,7 @@ jobs:
      - name: Set up Go
        uses: actions/setup-go@v2
        with:
-          go-version: ^1.17.2
+          go-version: ^1.16

      - name: Get project dependencies
        run: go mod download
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,7 +28,7 @@ jobs:
      - name: Set up Go
        uses: actions/setup-go@v2
        with:
-          go-version: ^1.17.2
+          go-version: ^1.16
      - name: Checkout codebase
        uses: actions/checkout@v2

--- a/README.md
+++ b/README.md
@@ -23,9 +23,8 @@
  - [Xray4Magisk](https://github.com/CerteKim/Xray4Magisk)
  - [Xray_For_Magisk](https://github.com/E7KMbb/Xray_For_Magisk)
 - Homebrew
-  - `brew install xray`
-  - [(Tap) Repository 0](https://github.com/N4FA/homebrew-xray)
-  - [(Tap) Repository 1](https://github.com/xiruizhao/homebrew-xray)
+  - [Repository 0](https://github.com/N4FA/homebrew-xray)
+  - [Repository 1](https://github.com/xiruizhao/homebrew-xray)

 ## Usage

@@ -40,16 +39,13 @@
  - [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)
-  - [Qv2ray](https://github.com/Qv2ray/Qv2ray)  (This project had been archived and currently inactive)
+  - [Qv2ray](https://github.com/Qv2ray/Qv2ray)
  - [Netch (NetFilter & TUN/TAP)](https://github.com/NetchX/Netch)
 - Android
  - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [AnXray](https://github.com/XTLS/AnXray)
  - [Kitsunebi](https://github.com/rurirei/Kitsunebi/tree/release_xtls)
- iOS & macOS (with M1 chip)
+- iOS / Mac
  - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
- macOS (Intel chip & M1 chip)
-  - [Qv2ray](https://github.com/Qv2ray/Qv2ray) (This project had been archived and currently inactive)

 ## Credits

--- a/app/commander/config.pb.go
+++ b/app/commander/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/commander/config.proto

 package commander

 import (
+	proto "github.com/golang/protobuf/proto"
 	serial "github.com/xtls/xray-core/common/serial"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -21,6 +22,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 // Config is the settings for Commander.
 type Config struct {
 	state         protoimpl.MessageState
--- a/app/commander/service.go
+++ b/app/commander/service.go
@@ -3,10 +3,9 @@ package commander
 import (
 	"context"

+	"github.com/xtls/xray-core/common"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
-
-	"github.com/xtls/xray-core/common"
 )

 // Service is a Commander service.
--- a/app/dispatcher/config.pb.go
+++ b/app/dispatcher/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/dispatcher/config.proto

 package dispatcher

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type SessionConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/app/dispatcher/default.go
+++ b/app/dispatcher/default.go
@@ -15,7 +15,6 @@ import (
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/routing"
@@ -25,7 +24,9 @@ import (
 	"github.com/xtls/xray-core/transport/pipe"
 )

-var errSniffingTimeout = newError("timeout on sniffing")
+var (
+	errSniffingTimeout = newError("timeout on sniffing")
+)

 type cachedReader struct {
 	sync.Mutex
@@ -174,35 +175,19 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
 	return inboundLink, outboundLink
 }

-func shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
+func shouldOverride(result SniffResult, request session.SniffingRequest) bool {
 	domain := result.Domain()
 	for _, d := range request.ExcludeForDomain {
-		if strings.ToLower(domain) == d {
+		if domain == d {
 			return false
 		}
 	}
-	var fakeDNSEngine dns.FakeDNSEngine
-	core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
-		fakeDNSEngine = fdns
-	})
-	protocolString := result.Protocol()
-	if resComp, ok := result.(SnifferResultComposite); ok {
-		protocolString = resComp.ProtocolForDomainResult()
-	}
+
+	protocol := result.Protocol()
 	for _, p := range request.OverrideDestinationForProtocol {
-		if strings.HasPrefix(protocolString, p) {
+		if strings.HasPrefix(protocol, p) {
 			return true
 		}
-		if fkr0, ok := fakeDNSEngine.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" &&
-			destination.Address.Family().IsIP() && fkr0.IsIPInIPPool(destination.Address) {
-				newError("Using sniffer ", protocolString, " since the fake DNS missed").WriteToLog(session.ExportIDToError(ctx))
-				return true
-		}
-		if resultSubset, ok := result.(SnifferIsProtoSubsetOf); ok {
-			if resultSubset.IsProtoSubsetOf(p) {
-				return true
-			}
-		}
 	}

 	return false
@@ -225,33 +210,19 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 		ctx = session.ContextWithContent(ctx, content)
 	}
 	sniffingRequest := content.SniffingRequest
-	switch {
-	case !sniffingRequest.Enabled:
+	if destination.Network != net.Network_TCP || !sniffingRequest.Enabled {
 		go d.routedDispatch(ctx, outbound, destination)
-	case destination.Network != net.Network_TCP:
-		// Only metadata sniff will be used for non tcp connection
-		result, err := sniffer(ctx, nil, true)
-		if err == nil {
-			content.Protocol = result.Protocol()
-			if shouldOverride(ctx, result, sniffingRequest, destination) {
-				domain := result.Domain()
-				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
-				destination.Address = net.ParseAddress(domain)
-				ob.Target = destination
-			}
-		}
-		go d.routedDispatch(ctx, outbound, destination)
-	default:
+	} else {
 		go func() {
 			cReader := &cachedReader{
 				reader: outbound.Reader.(*pipe.Reader),
 			}
 			outbound.Reader = cReader
-			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly)
+			result, err := sniffer(ctx, cReader)
 			if err == nil {
 				content.Protocol = result.Protocol()
 			}
-			if err == nil && shouldOverride(ctx, result, sniffingRequest, destination) {
+			if err == nil && shouldOverride(result, sniffingRequest) {
 				domain := result.Domain()
 				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
 				destination.Address = net.ParseAddress(domain)
@@ -263,63 +234,56 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	return inbound, nil
 }

-func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool) (SniffResult, error) {
+func sniffer(ctx context.Context, cReader *cachedReader) (SniffResult, error) {
 	payload := buf.New()
 	defer payload.Release()

-	sniffer := NewSniffer(ctx)
+	sniffer := NewSniffer()
+	totalAttempt := 0
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		default:
+			totalAttempt++
+			if totalAttempt > 2 {
+				return nil, errSniffingTimeout
+			}

-	metaresult, metadataErr := sniffer.SniffMetadata(ctx)
-
-	if metadataOnly {
-		return metaresult, metadataErr
-	}
-
-	contentResult, contentErr := func() (SniffResult, error) {
-		totalAttempt := 0
-		for {
-			select {
-			case <-ctx.Done():
-				return nil, ctx.Err()
-			default:
-				totalAttempt++
-				if totalAttempt > 2 {
-					return nil, errSniffingTimeout
-				}
-
-				cReader.Cache(payload)
-				if !payload.IsEmpty() {
-					result, err := sniffer.Sniff(ctx, payload.Bytes())
-					if err != common.ErrNoClue {
-						return result, err
-					}
-				}
-				if payload.IsFull() {
-					return nil, errUnknownContent
+			cReader.Cache(payload)
+			if !payload.IsEmpty() {
+				result, err := sniffer.Sniff(payload.Bytes())
+				if err != common.ErrNoClue {
+					return result, err
 				}
 			}
+			if payload.IsFull() {
+				return nil, errUnknownContent
+			}
 		}
-	}()
-	if contentErr != nil && metadataErr == nil {
-		return metaresult, nil
 	}
-	if contentErr == nil && metadataErr == nil {
-		return CompositeResult(metaresult, contentResult), nil
-	}
-	return contentResult, contentErr
 }

 func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.Link, destination net.Destination) {
 	var handler outbound.Handler

-	if d.router != nil {
-		if route, err := d.router.PickRoute(routing_session.AsRoutingContext(ctx)); err == nil {
-			tag := route.GetOutboundTag()
-			if h := d.ohm.GetHandler(tag); h != nil {
-				newError("taking detour [", tag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+	skipRoutePick := false
+	if content := session.ContentFromContext(ctx); content != nil {
+		skipRoutePick = content.SkipRoutePick
+	}
+
+	routingLink := routing_session.AsRoutingContext(ctx)
+	inTag := routingLink.GetInboundTag()
+	isPickRoute := false
+	if d.router != nil && !skipRoutePick {
+		if route, err := d.router.PickRoute(routingLink); err == nil {
+			outTag := route.GetOutboundTag()
+			isPickRoute = true
+			if h := d.ohm.GetHandler(outTag); h != nil {
+				newError("taking detour [", outTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
 				handler = h
 			} else {
-				newError("non existing outTag: ", tag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+				newError("non existing outTag: ", outTag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
 			}
 		} else {
 			newError("default route for ", destination).WriteToLog(session.ExportIDToError(ctx))
@@ -339,7 +303,19 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.

 	if accessMessage := log.AccessMessageFromContext(ctx); accessMessage != nil {
 		if tag := handler.Tag(); tag != "" {
-			accessMessage.Detour = tag
+			if isPickRoute {
+				if inTag != "" {
+					accessMessage.Detour = inTag + " -> " + tag
+				} else {
+					accessMessage.Detour = tag
+				}
+			} else {
+				if inTag != "" {
+					accessMessage.Detour = inTag + " >> " + tag
+				} else {
+					accessMessage.Detour = tag
+				}
+			}
 		}
 		log.Record(accessMessage)
 	}
--- a/app/dispatcher/fakednssniffer.go
+++ b/app/dispatcher/fakednssniffer.go
@@ -1,117 +0,0 @@
-package dispatcher
-
-import (
-	"context"
-	"strings"
-
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/dns"
-)
-
-// newFakeDNSSniffer Create a Fake DNS metadata sniffer
-func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error) {
-	var fakeDNSEngine dns.FakeDNSEngine
-	err := core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
-		fakeDNSEngine = fdns
-	})
-	if err != nil {
-		return protocolSnifferWithMetadata{}, err
-	}
-	if fakeDNSEngine == nil {
-		errNotInit := newError("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
-		if Target.Network == net.Network_TCP || Target.Network == net.Network_UDP {
-			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(Target.Address)
-			if domainFromFakeDNS != "" {
-				newError("fake dns got domain: ", domainFromFakeDNS, " for ip: ", Target.Address.String()).WriteToLog(session.ExportIDToError(ctx))
-				return &fakeDNSSniffResult{domainName: domainFromFakeDNS}, nil
-			}
-		}
-
-		if ipAddressInRangeValueI := ctx.Value(ipAddressInRange); ipAddressInRangeValueI != nil {
-			ipAddressInRangeValue := ipAddressInRangeValueI.(*ipAddressInRangeOpt)
-			if fkr0, ok := fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
-				inPool := fkr0.IsIPInIPPool(Target.Address)
-				ipAddressInRangeValue.addressInRange = &inPool
-			}
-		}
-
-		return nil, common.ErrNoClue
-	}, metadataSniffer: true}, nil
-}
-
-type fakeDNSSniffResult struct {
-	domainName string
-}
-
-func (fakeDNSSniffResult) Protocol() string {
-	return "fakedns"
-}
-
-func (f fakeDNSSniffResult) Domain() string {
-	return f.domainName
-}
-
-type fakeDNSExtraOpts int
-
-const ipAddressInRange fakeDNSExtraOpts = 1
-
-type ipAddressInRangeOpt struct {
-	addressInRange *bool
-}
-
-type DNSThenOthersSniffResult struct {
-	domainName           string
-	protocolOriginalName string
-}
-
-func (f DNSThenOthersSniffResult) IsProtoSubsetOf(protocolName string) bool {
-	return strings.HasPrefix(protocolName, f.protocolOriginalName)
-}
-
-func (DNSThenOthersSniffResult) Protocol() string {
-	return "fakedns+others"
-}
-
-func (f DNSThenOthersSniffResult) Domain() string {
-	return f.domainName
-}
-
-func newFakeDNSThenOthers(ctx context.Context, fakeDNSSniffer protocolSnifferWithMetadata, others []protocolSnifferWithMetadata) (
-	protocolSnifferWithMetadata, error) { // nolint: unparam
-	// ctx may be used in the future
-	_ = ctx
-	return protocolSnifferWithMetadata{
-		protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
-			ipAddressInRangeValue := &ipAddressInRangeOpt{}
-			ctx = context.WithValue(ctx, ipAddressInRange, ipAddressInRangeValue)
-			result, err := fakeDNSSniffer.protocolSniffer(ctx, bytes)
-			if err == nil {
-				return result, nil
-			}
-			if ipAddressInRangeValue.addressInRange != nil {
-				if *ipAddressInRangeValue.addressInRange {
-					for _, v := range others {
-						if v.metadataSniffer || bytes != nil {
-							if result, err := v.protocolSniffer(ctx, bytes); err == nil {
-								return DNSThenOthersSniffResult{domainName: result.Domain(), protocolOriginalName: result.Protocol()}, nil
-							}
-						}
-					}
-					return nil, common.ErrNoClue
-				}
-				newError("ip address not in fake dns range, return as is").AtDebug().WriteToLog()
-				return nil, common.ErrNoClue
-			}
-			newError("fake dns sniffer did not set address in range option, assume false.").AtWarning().WriteToLog()
-			return nil, common.ErrNoClue
-		},
-		metadataSniffer: false,
-	}, nil
-}
--- a/app/dispatcher/sniffer.go
+++ b/app/dispatcher/sniffer.go
@@ -1,8 +1,6 @@
 package dispatcher

 import (
-	"context"
-
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/protocol/bittorrent"
 	"github.com/xtls/xray-core/common/protocol/http"
@@ -14,51 +12,30 @@ type SniffResult interface {
 	Domain() string
 }

-type protocolSniffer func(context.Context, []byte) (SniffResult, error)
-
-type protocolSnifferWithMetadata struct {
-	protocolSniffer protocolSniffer
-	// A Metadata sniffer will be invoked on connection establishment only, with nil body,
-	// for both TCP and UDP connections
-	// It will not be shown as a traffic type for routing unless there is no other successful sniffing.
-	metadataSniffer bool
-}
+type protocolSniffer func([]byte) (SniffResult, error)

 type Sniffer struct {
-	sniffer []protocolSnifferWithMetadata
+	sniffer []protocolSniffer
 }

-func NewSniffer(ctx context.Context) *Sniffer {
-	ret := &Sniffer{
-		sniffer: []protocolSnifferWithMetadata{
-			{func(c context.Context, b []byte) (SniffResult, error) { return http.SniffHTTP(b) }, false},
-			{func(c context.Context, b []byte) (SniffResult, error) { return tls.SniffTLS(b) }, false},
-			{func(c context.Context, b []byte) (SniffResult, error) { return bittorrent.SniffBittorrent(b) }, false},
+func NewSniffer() *Sniffer {
+	return &Sniffer{
+		sniffer: []protocolSniffer{
+			func(b []byte) (SniffResult, error) { return http.SniffHTTP(b) },
+			func(b []byte) (SniffResult, error) { return tls.SniffTLS(b) },
+			func(b []byte) (SniffResult, error) { return bittorrent.SniffBittorrent(b) },
 		},
 	}
-	if sniffer, err := newFakeDNSSniffer(ctx); err == nil {
-		others := ret.sniffer
-		ret.sniffer = append(ret.sniffer, sniffer)
-		fakeDNSThenOthers, err := newFakeDNSThenOthers(ctx, sniffer, others)
-		if err == nil {
-			ret.sniffer = append([]protocolSnifferWithMetadata{fakeDNSThenOthers}, ret.sniffer...)
-		}
-	}
-	return ret
 }

 var errUnknownContent = newError("unknown content")

-func (s *Sniffer) Sniff(c context.Context, payload []byte) (SniffResult, error) {
-	var pendingSniffer []protocolSnifferWithMetadata
-	for _, si := range s.sniffer {
-		s := si.protocolSniffer
-		if si.metadataSniffer {
-			continue
-		}
-		result, err := s(c, payload)
+func (s *Sniffer) Sniff(payload []byte) (SniffResult, error) {
+	var pendingSniffer []protocolSniffer
+	for _, s := range s.sniffer {
+		result, err := s(payload)
 		if err == common.ErrNoClue {
-			pendingSniffer = append(pendingSniffer, si)
+			pendingSniffer = append(pendingSniffer, s)
 			continue
 		}

@@ -74,59 +51,3 @@ func (s *Sniffer) Sniff(c context.Context, payload []byte) (SniffResult, error)

 	return nil, errUnknownContent
 }
-
-func (s *Sniffer) SniffMetadata(c context.Context) (SniffResult, error) {
-	var pendingSniffer []protocolSnifferWithMetadata
-	for _, si := range s.sniffer {
-		s := si.protocolSniffer
-		if !si.metadataSniffer {
-			pendingSniffer = append(pendingSniffer, si)
-			continue
-		}
-		result, err := s(c, nil)
-		if err == common.ErrNoClue {
-			pendingSniffer = append(pendingSniffer, si)
-			continue
-		}
-
-		if err == nil && result != nil {
-			return result, nil
-		}
-	}
-
-	if len(pendingSniffer) > 0 {
-		s.sniffer = pendingSniffer
-		return nil, common.ErrNoClue
-	}
-
-	return nil, errUnknownContent
-}
-
-func CompositeResult(domainResult SniffResult, protocolResult SniffResult) SniffResult {
-	return &compositeResult{domainResult: domainResult, protocolResult: protocolResult}
-}
-
-type compositeResult struct {
-	domainResult   SniffResult
-	protocolResult SniffResult
-}
-
-func (c compositeResult) Protocol() string {
-	return c.protocolResult.Protocol()
-}
-
-func (c compositeResult) Domain() string {
-	return c.domainResult.Domain()
-}
-
-func (c compositeResult) ProtocolForDomainResult() string {
-	return c.domainResult.Protocol()
-}
-
-type SnifferResultComposite interface {
-	ProtocolForDomainResult() string
-}
-
-type SnifferIsProtoSubsetOf interface {
-	IsProtoSubsetOf(protocolName string) bool
-}
--- a/app/dns/config.go
+++ b/app/dns/config.go
@@ -1,63 +0,0 @@
-package dns
-
-import (
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/strmatcher"
-	"github.com/xtls/xray-core/common/uuid"
-)
-
-var typeMap = map[DomainMatchingType]strmatcher.Type{
-	DomainMatchingType_Full:      strmatcher.Full,
-	DomainMatchingType_Subdomain: strmatcher.Domain,
-	DomainMatchingType_Keyword:   strmatcher.Substr,
-	DomainMatchingType_Regex:     strmatcher.Regex,
-}
-
-// References:
-// https://www.iana.org/assignments/special-use-domain-names/special-use-domain-names.xhtml
-// https://unix.stackexchange.com/questions/92441/whats-the-difference-between-local-home-and-lan
-var localTLDsAndDotlessDomains = []*NameServer_PriorityDomain{
-	{Type: DomainMatchingType_Regex, Domain: "^[^.]+$"}, // This will only match domains without any dot
-	{Type: DomainMatchingType_Subdomain, Domain: "local"},
-	{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
-	{Type: DomainMatchingType_Subdomain, Domain: "localhost"},
-	{Type: DomainMatchingType_Subdomain, Domain: "lan"},
-	{Type: DomainMatchingType_Subdomain, Domain: "home.arpa"},
-	{Type: DomainMatchingType_Subdomain, Domain: "example"},
-	{Type: DomainMatchingType_Subdomain, Domain: "invalid"},
-	{Type: DomainMatchingType_Subdomain, Domain: "test"},
-}
-
-var localTLDsAndDotlessDomainsRule = &NameServer_OriginalRule{
-	Rule: "geosite:private",
-	Size: uint32(len(localTLDsAndDotlessDomains)),
-}
-
-func toStrMatcher(t DomainMatchingType, domain string) (strmatcher.Matcher, error) {
-	strMType, f := typeMap[t]
-	if !f {
-		return nil, newError("unknown mapping type", t).AtWarning()
-	}
-	matcher, err := strMType.New(domain)
-	if err != nil {
-		return nil, newError("failed to create str matcher").Base(err)
-	}
-	return matcher, nil
-}
-
-func toNetIP(addrs []net.Address) ([]net.IP, error) {
-	ips := make([]net.IP, 0, len(addrs))
-	for _, addr := range addrs {
-		if addr.Family().IsIP() {
-			ips = append(ips, addr.IP())
-		} else {
-			return nil, newError("Failed to convert address", addr, "to Net IP.").AtWarning()
-		}
-	}
-	return ips, nil
-}
-
-func generateRandomTag() string {
-	id := uuid.New()
-	return "xray.system." + id.String()
-}
--- a/app/dns/config.pb.go
+++ b/app/dns/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/dns/config.proto

 package dns

 import (
+	proto "github.com/golang/protobuf/proto"
 	router "github.com/xtls/xray-core/app/router"
 	net "github.com/xtls/xray-core/common/net"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
@@ -22,6 +23,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type DomainMatchingType int32

 const (
@@ -74,63 +79,12 @@ func (DomainMatchingType) EnumDescriptor() ([]byte, []int) {
 	return file_app_dns_config_proto_rawDescGZIP(), []int{0}
 }

-type QueryStrategy int32
-
-const (
-	QueryStrategy_USE_IP  QueryStrategy = 0
-	QueryStrategy_USE_IP4 QueryStrategy = 1
-	QueryStrategy_USE_IP6 QueryStrategy = 2
-)
-
-// Enum value maps for QueryStrategy.
-var (
-	QueryStrategy_name = map[int32]string{
-		0: "USE_IP",
-		1: "USE_IP4",
-		2: "USE_IP6",
-	}
-	QueryStrategy_value = map[string]int32{
-		"USE_IP":  0,
-		"USE_IP4": 1,
-		"USE_IP6": 2,
-	}
-)
-
-func (x QueryStrategy) Enum() *QueryStrategy {
-	p := new(QueryStrategy)
-	*p = x
-	return p
-}
-
-func (x QueryStrategy) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (QueryStrategy) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_dns_config_proto_enumTypes[1].Descriptor()
-}
-
-func (QueryStrategy) Type() protoreflect.EnumType {
-	return &file_app_dns_config_proto_enumTypes[1]
-}
-
-func (x QueryStrategy) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use QueryStrategy.Descriptor instead.
-func (QueryStrategy) EnumDescriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
-}
-
 type NameServer struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

 	Address           *net.Endpoint                `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
-	ClientIp          []byte                       `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
-	SkipFallback      bool                         `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
 	PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
 	Geoip             []*router.GeoIP              `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
 	OriginalRules     []*NameServer_OriginalRule   `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
@@ -175,20 +129,6 @@ func (x *NameServer) GetAddress() *net.Endpoint {
 	return nil
 }

-func (x *NameServer) GetClientIp() []byte {
-	if x != nil {
-		return x.ClientIp
-	}
-	return nil
-}
-
-func (x *NameServer) GetSkipFallback() bool {
-	if x != nil {
-		return x.SkipFallback
-	}
-	return false
-}
-
 func (x *NameServer) GetPrioritizedDomain() []*NameServer_PriorityDomain {
 	if x != nil {
 		return x.PrioritizedDomain
@@ -234,11 +174,6 @@ type Config struct {
 	StaticHosts []*Config_HostMapping `protobuf:"bytes,4,rep,name=static_hosts,json=staticHosts,proto3" json:"static_hosts,omitempty"`
 	// Tag is the inbound tag of DNS client.
 	Tag string `protobuf:"bytes,6,opt,name=tag,proto3" json:"tag,omitempty"`
-	// DisableCache disables DNS cache
-	DisableCache           bool          `protobuf:"varint,8,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
-	QueryStrategy          QueryStrategy `protobuf:"varint,9,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
-	DisableFallback        bool          `protobuf:"varint,10,opt,name=disableFallback,proto3" json:"disableFallback,omitempty"`
-	DisableFallbackIfMatch bool          `protobuf:"varint,11,opt,name=disableFallbackIfMatch,proto3" json:"disableFallbackIfMatch,omitempty"`
 }

 func (x *Config) Reset() {
@@ -317,34 +252,6 @@ func (x *Config) GetTag() string {
 	return ""
 }

-func (x *Config) GetDisableCache() bool {
-	if x != nil {
-		return x.DisableCache
-	}
-	return false
-}
-
-func (x *Config) GetQueryStrategy() QueryStrategy {
-	if x != nil {
-		return x.QueryStrategy
-	}
-	return QueryStrategy_USE_IP
-}
-
-func (x *Config) GetDisableFallback() bool {
-	if x != nil {
-		return x.DisableFallback
-	}
-	return false
-}
-
-func (x *Config) GetDisableFallbackIfMatch() bool {
-	if x != nil {
-		return x.DisableFallbackIfMatch
-	}
-	return false
-}
-
 type NameServer_PriorityDomain struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -464,7 +371,8 @@ type Config_HostMapping struct {
 	Domain string             `protobuf:"bytes,2,opt,name=domain,proto3" json:"domain,omitempty"`
 	Ip     [][]byte           `protobuf:"bytes,3,rep,name=ip,proto3" json:"ip,omitempty"`
 	// ProxiedDomain indicates the mapped domain has the same IP address on this
-	// domain. Xray will use this domain for IP queries.
+	// domain. Xray will use this domain for IP queries. This field is only
+	// effective if ip is empty.
 	ProxiedDomain string `protobuf:"bytes,4,opt,name=proxied_domain,json=proxiedDomain,proto3" json:"proxied_domain,omitempty"`
 }

@@ -538,98 +446,77 @@ var file_app_dns_config_proto_rawDesc = []byte{
 	0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6e, 0x65, 0x74, 0x2f, 0x64, 0x65, 0x73, 0x74, 0x69,
 	0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x17, 0x61, 0x70,
 	0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xee, 0x03, 0x0a, 0x0a, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xad, 0x03, 0x0a, 0x0a, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65,
 	0x72, 0x76, 0x65, 0x72, 0x12, 0x33, 0x0a, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18,
 	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
 	0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
-	0x52, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x12, 0x1b, 0x0a, 0x09, 0x63, 0x6c, 0x69,
-	0x65, 0x6e, 0x74, 0x5f, 0x69, 0x70, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x08, 0x63, 0x6c,
-	0x69, 0x65, 0x6e, 0x74, 0x49, 0x70, 0x12, 0x22, 0x0a, 0x0c, 0x73, 0x6b, 0x69, 0x70, 0x46, 0x61,
-	0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x18, 0x06, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x73, 0x6b,
-	0x69, 0x70, 0x46, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x12, 0x56, 0x0a, 0x12, 0x70, 0x72,
-	0x69, 0x6f, 0x72, 0x69, 0x74, 0x69, 0x7a, 0x65, 0x64, 0x5f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
-	0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x27, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
-	0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
-	0x2e, 0x50, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52,
-	0x11, 0x70, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x69, 0x7a, 0x65, 0x64, 0x44, 0x6f, 0x6d, 0x61,
-	0x69, 0x6e, 0x12, 0x2c, 0x0a, 0x05, 0x67, 0x65, 0x6f, 0x69, 0x70, 0x18, 0x03, 0x20, 0x03, 0x28,
-	0x0b, 0x32, 0x16, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75,
-	0x74, 0x65, 0x72, 0x2e, 0x47, 0x65, 0x6f, 0x49, 0x50, 0x52, 0x05, 0x67, 0x65, 0x6f, 0x69, 0x70,
-	0x12, 0x4c, 0x0a, 0x0e, 0x6f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x5f, 0x72, 0x75, 0x6c,
-	0x65, 0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
-	0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76,
-	0x65, 0x72, 0x2e, 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x52,
-	0x0d, 0x6f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x73, 0x1a, 0x5e,
-	0x0a, 0x0e, 0x50, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
-	0x12, 0x34, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x20,
-	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x44, 0x6f,
-	0x6d, 0x61, 0x69, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79, 0x70, 0x65,
-	0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x1a, 0x36,
-	0x0a, 0x0c, 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x12, 0x12,
-	0x0a, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x72, 0x75,
-	0x6c, 0x65, 0x12, 0x12, 0x0a, 0x04, 0x73, 0x69, 0x7a, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d,
-	0x52, 0x04, 0x73, 0x69, 0x7a, 0x65, 0x22, 0xef, 0x05, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69,
-	0x67, 0x12, 0x3f, 0x0a, 0x0b, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x73,
-	0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f,
-	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e,
-	0x74, 0x42, 0x02, 0x18, 0x01, 0x52, 0x0b, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65,
-	0x72, 0x73, 0x12, 0x39, 0x0a, 0x0b, 0x6e, 0x61, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65,
-	0x72, 0x18, 0x05, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x18, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61,
+	0x52, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x12, 0x56, 0x0a, 0x12, 0x70, 0x72, 0x69,
+	0x6f, 0x72, 0x69, 0x74, 0x69, 0x7a, 0x65, 0x64, 0x5f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x18,
+	0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x27, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
+	0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x2e,
+	0x50, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x11,
+	0x70, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x69, 0x7a, 0x65, 0x64, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x12, 0x2c, 0x0a, 0x05, 0x67, 0x65, 0x6f, 0x69, 0x70, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b,
+	0x32, 0x16, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74,
+	0x65, 0x72, 0x2e, 0x47, 0x65, 0x6f, 0x49, 0x50, 0x52, 0x05, 0x67, 0x65, 0x6f, 0x69, 0x70, 0x12,
+	0x4c, 0x0a, 0x0e, 0x6f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x5f, 0x72, 0x75, 0x6c, 0x65,
+	0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61,
 	0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65,
-	0x72, 0x52, 0x0a, 0x6e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x12, 0x39, 0x0a,
-	0x05, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1f, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x43, 0x6f, 0x6e, 0x66,
-	0x69, 0x67, 0x2e, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x42, 0x02, 0x18,
-	0x01, 0x52, 0x05, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x12, 0x1b, 0x0a, 0x09, 0x63, 0x6c, 0x69, 0x65,
-	0x6e, 0x74, 0x5f, 0x69, 0x70, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x08, 0x63, 0x6c, 0x69,
-	0x65, 0x6e, 0x74, 0x49, 0x70, 0x12, 0x43, 0x0a, 0x0c, 0x73, 0x74, 0x61, 0x74, 0x69, 0x63, 0x5f,
-	0x68, 0x6f, 0x73, 0x74, 0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72,
+	0x72, 0x2e, 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x0d,
+	0x6f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x73, 0x1a, 0x5e, 0x0a,
+	0x0e, 0x50, 0x72, 0x69, 0x6f, 0x72, 0x69, 0x74, 0x79, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12,
+	0x34, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x20, 0x2e,
+	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x44, 0x6f, 0x6d,
+	0x61, 0x69, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79, 0x70, 0x65, 0x52,
+	0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x18,
+	0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x1a, 0x36, 0x0a,
+	0x0c, 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x52, 0x75, 0x6c, 0x65, 0x12, 0x12, 0x0a,
+	0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x72, 0x75, 0x6c,
+	0x65, 0x12, 0x12, 0x0a, 0x04, 0x73, 0x69, 0x7a, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d, 0x52,
+	0x04, 0x73, 0x69, 0x7a, 0x65, 0x22, 0x9f, 0x04, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
+	0x12, 0x3f, 0x0a, 0x0b, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x73, 0x18,
+	0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
+	0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
+	0x42, 0x02, 0x18, 0x01, 0x52, 0x0b, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
+	0x73, 0x12, 0x39, 0x0a, 0x0b, 0x6e, 0x61, 0x6d, 0x65, 0x5f, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72,
+	0x18, 0x05, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x18, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
+	0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x4e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72,
+	0x52, 0x0a, 0x6e, 0x61, 0x6d, 0x65, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x12, 0x39, 0x0a, 0x05,
+	0x48, 0x6f, 0x73, 0x74, 0x73, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1f, 0x2e, 0x78, 0x72,
 	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x43, 0x6f, 0x6e, 0x66, 0x69,
-	0x67, 0x2e, 0x48, 0x6f, 0x73, 0x74, 0x4d, 0x61, 0x70, 0x70, 0x69, 0x6e, 0x67, 0x52, 0x0b, 0x73,
-	0x74, 0x61, 0x74, 0x69, 0x63, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61,
-	0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x22, 0x0a, 0x0c,
-	0x64, 0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x43, 0x61, 0x63, 0x68, 0x65, 0x18, 0x08, 0x20, 0x01,
-	0x28, 0x08, 0x52, 0x0c, 0x64, 0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x43, 0x61, 0x63, 0x68, 0x65,
-	0x12, 0x42, 0x0a, 0x0e, 0x71, 0x75, 0x65, 0x72, 0x79, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65,
-	0x67, 0x79, 0x18, 0x09, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
-	0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x51, 0x75, 0x65, 0x72, 0x79, 0x53, 0x74, 0x72,
-	0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x0d, 0x71, 0x75, 0x65, 0x72, 0x79, 0x53, 0x74, 0x72, 0x61,
-	0x74, 0x65, 0x67, 0x79, 0x12, 0x28, 0x0a, 0x0f, 0x64, 0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x46,
-	0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x18, 0x0a, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0f, 0x64,
-	0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x46, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x12, 0x36,
-	0x0a, 0x16, 0x64, 0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x46, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63,
-	0x6b, 0x49, 0x66, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x18, 0x0b, 0x20, 0x01, 0x28, 0x08, 0x52, 0x16,
-	0x64, 0x69, 0x73, 0x61, 0x62, 0x6c, 0x65, 0x46, 0x61, 0x6c, 0x6c, 0x62, 0x61, 0x63, 0x6b, 0x49,
-	0x66, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x1a, 0x55, 0x0a, 0x0a, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x45,
-	0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x31, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18,
-	0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
-	0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f, 0x6d, 0x61,
-	0x69, 0x6e, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x1a, 0x92, 0x01,
-	0x0a, 0x0b, 0x48, 0x6f, 0x73, 0x74, 0x4d, 0x61, 0x70, 0x70, 0x69, 0x6e, 0x67, 0x12, 0x34, 0x0a,
-	0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x20, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69,
-	0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79, 0x70, 0x65, 0x52, 0x04, 0x74,
-	0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x18, 0x02, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x0e, 0x0a, 0x02, 0x69,
-	0x70, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0c, 0x52, 0x02, 0x69, 0x70, 0x12, 0x25, 0x0a, 0x0e, 0x70,
-	0x72, 0x6f, 0x78, 0x69, 0x65, 0x64, 0x5f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x18, 0x04, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x69, 0x65, 0x64, 0x44, 0x6f, 0x6d, 0x61,
-	0x69, 0x6e, 0x4a, 0x04, 0x08, 0x07, 0x10, 0x08, 0x2a, 0x45, 0x0a, 0x12, 0x44, 0x6f, 0x6d, 0x61,
-	0x69, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x08,
-	0x0a, 0x04, 0x46, 0x75, 0x6c, 0x6c, 0x10, 0x00, 0x12, 0x0d, 0x0a, 0x09, 0x53, 0x75, 0x62, 0x64,
-	0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x4b, 0x65, 0x79, 0x77, 0x6f,
-	0x72, 0x64, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x52, 0x65, 0x67, 0x65, 0x78, 0x10, 0x03, 0x2a,
-	0x35, 0x0a, 0x0d, 0x51, 0x75, 0x65, 0x72, 0x79, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
-	0x12, 0x0a, 0x0a, 0x06, 0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x10, 0x00, 0x12, 0x0b, 0x0a, 0x07,
-	0x55, 0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45,
-	0x5f, 0x49, 0x50, 0x36, 0x10, 0x02, 0x42, 0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69,
-	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72,
-	0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x64, 0x6e, 0x73, 0xaa,
-	0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x62, 0x06,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x67, 0x2e, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x42, 0x02, 0x18, 0x01,
+	0x52, 0x05, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x12, 0x1b, 0x0a, 0x09, 0x63, 0x6c, 0x69, 0x65, 0x6e,
+	0x74, 0x5f, 0x69, 0x70, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x08, 0x63, 0x6c, 0x69, 0x65,
+	0x6e, 0x74, 0x49, 0x70, 0x12, 0x43, 0x0a, 0x0c, 0x73, 0x74, 0x61, 0x74, 0x69, 0x63, 0x5f, 0x68,
+	0x6f, 0x73, 0x74, 0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61,
+	0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
+	0x2e, 0x48, 0x6f, 0x73, 0x74, 0x4d, 0x61, 0x70, 0x70, 0x69, 0x6e, 0x67, 0x52, 0x0b, 0x73, 0x74,
+	0x61, 0x74, 0x69, 0x63, 0x48, 0x6f, 0x73, 0x74, 0x73, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61, 0x67,
+	0x18, 0x06, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x1a, 0x55, 0x0a, 0x0a, 0x48,
+	0x6f, 0x73, 0x74, 0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x31, 0x0a, 0x05, 0x76,
+	0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61,
+	0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f,
+	0x72, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02,
+	0x38, 0x01, 0x1a, 0x92, 0x01, 0x0a, 0x0b, 0x48, 0x6f, 0x73, 0x74, 0x4d, 0x61, 0x70, 0x70, 0x69,
+	0x6e, 0x67, 0x12, 0x34, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e,
+	0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e,
+	0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79,
+	0x70, 0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x64, 0x6f, 0x6d, 0x61,
+	0x69, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
+	0x12, 0x0e, 0x0a, 0x02, 0x69, 0x70, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0c, 0x52, 0x02, 0x69, 0x70,
+	0x12, 0x25, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x78, 0x69, 0x65, 0x64, 0x5f, 0x64, 0x6f, 0x6d, 0x61,
+	0x69, 0x6e, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x69, 0x65,
+	0x64, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x2a, 0x45, 0x0a, 0x12, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x08, 0x0a,
+	0x04, 0x46, 0x75, 0x6c, 0x6c, 0x10, 0x00, 0x12, 0x0d, 0x0a, 0x09, 0x53, 0x75, 0x62, 0x64, 0x6f,
+	0x6d, 0x61, 0x69, 0x6e, 0x10, 0x01, 0x12, 0x0b, 0x0a, 0x07, 0x4b, 0x65, 0x79, 0x77, 0x6f, 0x72,
+	0x64, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x52, 0x65, 0x67, 0x65, 0x78, 0x10, 0x03, 0x42, 0x46,
+	0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64,
+	0x6e, 0x73, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
+	0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f,
+	0x61, 0x70, 0x70, 0x2f, 0x64, 0x6e, 0x73, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41,
+	0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -644,39 +531,37 @@ func file_app_dns_config_proto_rawDescGZIP() []byte {
 	return file_app_dns_config_proto_rawDescData
 }

-var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_app_dns_config_proto_goTypes = []interface{}{
 	(DomainMatchingType)(0),           // 0: xray.app.dns.DomainMatchingType
-	(QueryStrategy)(0),                // 1: xray.app.dns.QueryStrategy
-	(*NameServer)(nil),                // 2: xray.app.dns.NameServer
-	(*Config)(nil),                    // 3: xray.app.dns.Config
-	(*NameServer_PriorityDomain)(nil), // 4: xray.app.dns.NameServer.PriorityDomain
-	(*NameServer_OriginalRule)(nil),   // 5: xray.app.dns.NameServer.OriginalRule
-	nil,                               // 6: xray.app.dns.Config.HostsEntry
-	(*Config_HostMapping)(nil),        // 7: xray.app.dns.Config.HostMapping
-	(*net.Endpoint)(nil),              // 8: xray.common.net.Endpoint
-	(*router.GeoIP)(nil),              // 9: xray.app.router.GeoIP
-	(*net.IPOrDomain)(nil),            // 10: xray.common.net.IPOrDomain
+	(*NameServer)(nil),                // 1: xray.app.dns.NameServer
+	(*Config)(nil),                    // 2: xray.app.dns.Config
+	(*NameServer_PriorityDomain)(nil), // 3: xray.app.dns.NameServer.PriorityDomain
+	(*NameServer_OriginalRule)(nil),   // 4: xray.app.dns.NameServer.OriginalRule
+	nil,                               // 5: xray.app.dns.Config.HostsEntry
+	(*Config_HostMapping)(nil),        // 6: xray.app.dns.Config.HostMapping
+	(*net.Endpoint)(nil),              // 7: xray.common.net.Endpoint
+	(*router.GeoIP)(nil),              // 8: xray.app.router.GeoIP
+	(*net.IPOrDomain)(nil),            // 9: xray.common.net.IPOrDomain
 }
 var file_app_dns_config_proto_depIdxs = []int32{
-	8,  // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
-	4,  // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
-	9,  // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
-	5,  // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
-	8,  // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
-	2,  // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
-	6,  // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
-	7,  // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
-	1,  // 8: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	0,  // 9: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
-	10, // 10: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
-	0,  // 11: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
-	12, // [12:12] is the sub-list for method output_type
-	12, // [12:12] is the sub-list for method input_type
-	12, // [12:12] is the sub-list for extension type_name
-	12, // [12:12] is the sub-list for extension extendee
-	0,  // [0:12] is the sub-list for field type_name
+	7,  // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
+	3,  // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
+	8,  // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
+	4,  // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
+	7,  // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
+	1,  // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
+	5,  // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
+	6,  // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
+	0,  // 8: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
+	9,  // 9: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
+	0,  // 10: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
+	11, // [11:11] is the sub-list for method output_type
+	11, // [11:11] is the sub-list for method input_type
+	11, // [11:11] is the sub-list for extension type_name
+	11, // [11:11] is the sub-list for extension extendee
+	0,  // [0:11] is the sub-list for field type_name
 }

 func init() { file_app_dns_config_proto_init() }
@@ -751,7 +636,7 @@ func file_app_dns_config_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_dns_config_proto_rawDesc,
-			NumEnums:      2,
+			NumEnums:      1,
 			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   0,
--- a/app/dns/config.proto
+++ b/app/dns/config.proto
@@ -12,8 +12,6 @@ import "app/router/config.proto";

 message NameServer {
  xray.common.net.Endpoint address = 1;
-  bytes client_ip = 5;
-  bool skipFallback = 6;

  message PriorityDomain {
    DomainMatchingType type = 1;
@@ -37,12 +35,6 @@ enum DomainMatchingType {
  Regex = 3;
 }

-enum QueryStrategy {
-  USE_IP = 0;
-  USE_IP4 = 1;
-  USE_IP6 = 2;
-}
-
 message Config {
  // Nameservers used by this DNS. Only traditional UDP servers are support at
  // the moment. A special value 'localhost' as a domain address can be set to
@@ -67,7 +59,8 @@ message Config {
    repeated bytes ip = 3;

    // ProxiedDomain indicates the mapped domain has the same IP address on this
-    // domain. Xray will use this domain for IP queries.
+    // domain. Xray will use this domain for IP queries. This field is only
+    // effective if ip is empty.
    string proxied_domain = 4;
  }

@@ -75,14 +68,4 @@ message Config {

  // Tag is the inbound tag of DNS client.
  string tag = 6;
-
-  reserved 7;
-
-  // DisableCache disables DNS cache
-  bool disableCache = 8;
-
-  QueryStrategy query_strategy = 9;
-
-  bool disableFallback = 10;
-  bool disableFallbackIfMatch = 11;
 }
--- a/app/dns/dns.go
+++ b/app/dns/dns.go
@@ -2,295 +2,3 @@
 package dns

 //go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"sync"
-
-	"github.com/xtls/xray-core/app/router"
-	"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/common/strmatcher"
-	"github.com/xtls/xray-core/features"
-	"github.com/xtls/xray-core/features/dns"
-)
-
-// DNS is a DNS rely server.
-type DNS struct {
-	sync.Mutex
-	tag                    string
-	disableCache           bool
-	disableFallback        bool
-	disableFallbackIfMatch bool
-	ipOption               *dns.IPOption
-	hosts                  *StaticHosts
-	clients                []*Client
-	ctx                    context.Context
-	domainMatcher          strmatcher.IndexMatcher
-	matcherInfos           []*DomainMatcherInfo
-}
-
-// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
-type DomainMatcherInfo struct {
-	clientIdx     uint16
-	domainRuleIdx uint16
-}
-
-// New creates a new DNS server with given configuration.
-func New(ctx context.Context, config *Config) (*DNS, error) {
-	var tag string
-	if len(config.Tag) > 0 {
-		tag = config.Tag
-	} else {
-		tag = generateRandomTag()
-	}
-
-	var clientIP net.IP
-	switch len(config.ClientIp) {
-	case 0, net.IPv4len, net.IPv6len:
-		clientIP = net.IP(config.ClientIp)
-	default:
-		return nil, newError("unexpected client IP length ", len(config.ClientIp))
-	}
-
-	var ipOption *dns.IPOption
-	switch config.QueryStrategy {
-	case QueryStrategy_USE_IP:
-		ipOption = &dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		}
-	case QueryStrategy_USE_IP4:
-		ipOption = &dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}
-	case QueryStrategy_USE_IP6:
-		ipOption = &dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
-		}
-	}
-
-	hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
-	if err != nil {
-		return nil, newError("failed to create hosts").Base(err)
-	}
-
-	clients := []*Client{}
-	domainRuleCount := 0
-	for _, ns := range config.NameServer {
-		domainRuleCount += len(ns.PrioritizedDomain)
-	}
-
-	// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
-	matcherInfos := make([]*DomainMatcherInfo, domainRuleCount+1)
-	domainMatcher := &strmatcher.MatcherGroup{}
-	geoipContainer := router.GeoIPMatcherContainer{}
-
-	for _, endpoint := range config.NameServers {
-		features.PrintDeprecatedFeatureWarning("simple DNS server")
-		client, err := NewSimpleClient(ctx, endpoint, clientIP)
-		if err != nil {
-			return nil, newError("failed to create client").Base(err)
-		}
-		clients = append(clients, client)
-	}
-
-	for _, ns := range config.NameServer {
-		clientIdx := len(clients)
-		updateDomain := func(domainRule strmatcher.Matcher, originalRuleIdx int, matcherInfos []*DomainMatcherInfo) error {
-			midx := domainMatcher.Add(domainRule)
-			matcherInfos[midx] = &DomainMatcherInfo{
-				clientIdx:     uint16(clientIdx),
-				domainRuleIdx: uint16(originalRuleIdx),
-			}
-			return nil
-		}
-
-		myClientIP := clientIP
-		switch len(ns.ClientIp) {
-		case net.IPv4len, net.IPv6len:
-			myClientIP = net.IP(ns.ClientIp)
-		}
-		client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
-		if err != nil {
-			return nil, newError("failed to create client").Base(err)
-		}
-		clients = append(clients, client)
-	}
-
-	// If there is no DNS client in config, add a `localhost` DNS client
-	if len(clients) == 0 {
-		clients = append(clients, NewLocalDNSClient())
-	}
-
-	return &DNS{
-		tag:                    tag,
-		hosts:                  hosts,
-		ipOption:               ipOption,
-		clients:                clients,
-		ctx:                    ctx,
-		domainMatcher:          domainMatcher,
-		matcherInfos:           matcherInfos,
-		disableCache:           config.DisableCache,
-		disableFallback:        config.DisableFallback,
-		disableFallbackIfMatch: config.DisableFallbackIfMatch,
-	}, nil
-}
-
-// Type implements common.HasType.
-func (*DNS) Type() interface{} {
-	return dns.ClientType()
-}
-
-// Start implements common.Runnable.
-func (s *DNS) Start() error {
-	return nil
-}
-
-// Close implements common.Closable.
-func (s *DNS) Close() error {
-	return nil
-}
-
-// IsOwnLink implements proxy.dns.ownLinkVerifier
-func (s *DNS) IsOwnLink(ctx context.Context) bool {
-	inbound := session.InboundFromContext(ctx)
-	return inbound != nil && inbound.Tag == s.tag
-}
-
-// LookupIP implements dns.Client.
-func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
-	if domain == "" {
-		return nil, newError("empty domain name")
-	}
-
-	option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
-	option.IPv6Enable = option.IPv6Enable && s.ipOption.IPv6Enable
-
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns.ErrEmptyResponse
-	}
-
-	// Normalize the FQDN form query
-	if strings.HasSuffix(domain, ".") {
-		domain = domain[:len(domain)-1]
-	}
-
-	// Static host lookup
-	switch addrs := s.hosts.Lookup(domain, option); {
-	case addrs == nil: // Domain not recorded in static host
-		break
-	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()
-		domain = addrs[0].Domain()
-	default: // Successfully found ip records in static host
-		newError("returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs).WriteToLog()
-		return toNetIP(addrs)
-	}
-
-	// Name servers lookup
-	errs := []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()
-			continue
-		}
-		ips, err := client.QueryIP(ctx, domain, option, s.disableCache)
-		if len(ips) > 0 {
-			return ips, nil
-		}
-		if err != nil {
-			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
-			errs = append(errs, err)
-		}
-		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
-			return nil, err
-		}
-	}
-
-	return nil, newError("returning nil for domain ", domain).Base(errors.Combine(errs...))
-}
-
-// GetIPOption implements ClientWithIPOption.
-func (s *DNS) GetIPOption() *dns.IPOption {
-	return s.ipOption
-}
-
-// SetQueryOption implements ClientWithIPOption.
-func (s *DNS) SetQueryOption(isIPv4Enable, isIPv6Enable bool) {
-	s.ipOption.IPv4Enable = isIPv4Enable
-	s.ipOption.IPv6Enable = isIPv6Enable
-}
-
-// SetFakeDNSOption implements ClientWithIPOption.
-func (s *DNS) SetFakeDNSOption(isFakeEnable bool) {
-	s.ipOption.FakeEnable = isFakeEnable
-}
-
-func (s *DNS) sortClients(domain string) []*Client {
-	clients := make([]*Client, 0, len(s.clients))
-	clientUsed := make([]bool, len(s.clients))
-	clientNames := make([]string, 0, len(s.clients))
-	domainRules := []string{}
-
-	// Priority domain matching
-	hasMatch := false
-	for _, match := range s.domainMatcher.Match(domain) {
-		info := s.matcherInfos[match]
-		client := s.clients[info.clientIdx]
-		domainRule := client.domains[info.domainRuleIdx]
-		domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", domainRule, info.clientIdx))
-		if clientUsed[info.clientIdx] {
-			continue
-		}
-		clientUsed[info.clientIdx] = true
-		clients = append(clients, client)
-		clientNames = append(clientNames, client.Name())
-		hasMatch = true
-	}
-
-	if !(s.disableFallback || s.disableFallbackIfMatch && hasMatch) {
-		// Default round-robin query
-		for idx, client := range s.clients {
-			if clientUsed[idx] || client.skipFallback {
-				continue
-			}
-			clientUsed[idx] = true
-			clients = append(clients, client)
-			clientNames = append(clientNames, client.Name())
-		}
-	}
-
-	if len(domainRules) > 0 {
-		newError("domain ", domain, " matches following rules: ", domainRules).AtDebug().WriteToLog()
-	}
-	if len(clientNames) > 0 {
-		newError("domain ", domain, " will use DNS in order: ", clientNames).AtDebug().WriteToLog()
-	}
-
-	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()
-	}
-
-	return clients
-}
-
-func init() {
-	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		return New(ctx, config.(*Config))
-	}))
-}
--- a/app/dns/dnscommon.go
+++ b/app/dns/dnscommon.go
@@ -2,20 +2,18 @@ package dns

 import (
 	"encoding/binary"
-	"strings"
 	"time"

-	"golang.org/x/net/dns/dnsmessage"
-
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	dns_feature "github.com/xtls/xray-core/features/dns"
+	"golang.org/x/net/dns/dnsmessage"
 )

 // Fqdn normalize domain make sure it ends with '.'
 func Fqdn(domain string) string {
-	if len(domain) > 0 && strings.HasSuffix(domain, ".") {
+	if len(domain) > 0 && domain[len(domain)-1] == '.' {
 		return domain
 	}
 	return domain + "."
@@ -54,7 +52,9 @@ func isNewer(baseRec *IPRecord, newRec *IPRecord) bool {
 	return baseRec.Expire.Before(newRec.Expire)
 }

-var errRecordNotFound = errors.New("record not found")
+var (
+	errRecordNotFound = errors.New("record not found")
+)

 type dnsRequest struct {
 	reqType dnsmessage.Type
@@ -112,7 +112,7 @@ func genEDNS0Options(clientIP net.IP) *dnsmessage.Resource {
 	return opt
 }

-func buildReqMsgs(domain string, option dns_feature.IPOption, reqIDGen func() uint16, reqOpts *dnsmessage.Resource) []*dnsRequest {
+func buildReqMsgs(domain string, option IPOption, reqIDGen func() uint16, reqOpts *dnsmessage.Resource) []*dnsRequest {
 	qA := dnsmessage.Question{
 		Name:  dnsmessage.MustNewName(domain),
 		Type:  dnsmessage.TypeA,
@@ -211,7 +211,7 @@ L:
 		case dnsmessage.TypeAAAA:
 			ans, err := parser.AAAAResource()
 			if err != nil {
-				newError("failed to parse AAAA record for domain: ", ah.Name).Base(err).WriteToLog()
+				newError("failed to parse A record for domain: ", ah.Name).Base(err).WriteToLog()
 				break L
 			}
 			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.AAAA[:]))
--- a/app/dns/dnscommon_test.go
+++ b/app/dns/dnscommon_test.go
@@ -7,11 +7,9 @@ import (

 	"github.com/google/go-cmp/cmp"
 	"github.com/miekg/dns"
-	"golang.org/x/net/dns/dnsmessage"
-
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
-	dns_feature "github.com/xtls/xray-core/features/dns"
+	"golang.org/x/net/dns/dnsmessage"
 )

 func Test_parseResponse(t *testing.T) {
@@ -50,28 +48,20 @@ func Test_parseResponse(t *testing.T) {
 		want    *IPRecord
 		wantErr bool
 	}{
-		{
-			"empty",
+		{"empty",
 			&IPRecord{0, []net.Address(nil), time.Time{}, dnsmessage.RCodeSuccess},
 			false,
 		},
-		{
-			"error",
+		{"error",
 			nil,
 			true,
 		},
-		{
-			"a record",
-			&IPRecord{
-				1,
-				[]net.Address{net.ParseAddress("8.8.8.8"), net.ParseAddress("8.8.4.4")},
-				time.Time{},
-				dnsmessage.RCodeSuccess,
-			},
+		{"a record",
+			&IPRecord{1, []net.Address{net.ParseAddress("8.8.8.8"), net.ParseAddress("8.8.4.4")},
+				time.Time{}, dnsmessage.RCodeSuccess},
 			false,
 		},
-		{
-			"aaaa record",
+		{"aaaa record",
 			&IPRecord{2, []net.Address{net.ParseAddress("2001::123:8888"), net.ParseAddress("2001::123:8844")}, time.Time{}, dnsmessage.RCodeSuccess},
 			false,
 		},
@@ -102,7 +92,7 @@ func Test_buildReqMsgs(t *testing.T) {
 	}
 	type args struct {
 		domain  string
-		option  dns_feature.IPOption
+		option  IPOption
 		reqOpts *dnsmessage.Resource
 	}
 	tests := []struct {
@@ -110,26 +100,10 @@ func Test_buildReqMsgs(t *testing.T) {
 		args args
 		want int
 	}{
-		{"dual stack", args{"test.com", dns_feature.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		}, nil}, 2},
-		{"ipv4 only", args{"test.com", dns_feature.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}, nil}, 1},
-		{"ipv6 only", args{"test.com", dns_feature.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
-		}, nil}, 1},
-		{"none/error", args{"test.com", dns_feature.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}, nil}, 0},
+		{"dual stack", args{"test.com", IPOption{true, true}, nil}, 2},
+		{"ipv4 only", args{"test.com", IPOption{true, false}, nil}, 1},
+		{"ipv6 only", args{"test.com", IPOption{false, true}, nil}, 1},
+		{"none/error", args{"test.com", IPOption{false, false}, nil}, 0},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
--- a/app/dns/nameserver_doh.go
+++ b/app/dns/nameserver_doh.go
@@ -5,16 +5,14 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"sync"
 	"sync/atomic"
 	"time"

-	"golang.org/x/net/dns/dnsmessage"
-
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
@@ -24,6 +22,7 @@ import (
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet"
+	"golang.org/x/net/dns/dnsmessage"
 )

 // DoHNameServer implemented DNS over HTTPS (RFC8484) Wire Format,
@@ -32,80 +31,30 @@ import (
 type DoHNameServer struct {
 	dispatcher routing.Dispatcher
 	sync.RWMutex
-	ips        map[string]*record
+	ips        map[string]record
 	pub        *pubsub.Service
 	cleanup    *task.Periodic
 	reqID      uint32
+	clientIP   net.IP
 	httpClient *http.Client
 	dohURL     string
 	name       string
 }

-// NewDoHNameServer creates DOH server object for remote resolving.
-func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher) (*DoHNameServer, error) {
+// NewDoHNameServer creates DOH client object for remote resolving
+func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, clientIP net.IP) (*DoHNameServer, error) {
 	newError("DNS: created Remote DOH client for ", url.String()).AtInfo().WriteToLog()
-	s := baseDOHNameServer(url, "DOH")
+	s := baseDOHNameServer(url, "DOH", clientIP)

 	s.dispatcher = dispatcher
-	tr := &http.Transport{
-		MaxIdleConns:        30,
-		IdleConnTimeout:     90 * time.Second,
-		TLSHandshakeTimeout: 30 * time.Second,
-		ForceAttemptHTTP2:   true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dispatcherCtx := context.Background()
-
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-
-			dispatcherCtx = session.ContextWithContent(dispatcherCtx, session.ContentFromContext(ctx))
-			dispatcherCtx = session.ContextWithInbound(dispatcherCtx, session.InboundFromContext(ctx))
-			dispatcherCtx = log.ContextWithAccessMessage(dispatcherCtx, &log.AccessMessage{
-				From:   "DoH",
-				To:     s.dohURL,
-				Status: log.AccessAccepted,
-				Reason: "",
-			})
-
-			link, err := s.dispatcher.Dispatch(dispatcherCtx, dest)
-			select {
-			case <-ctx.Done():
-				return nil, ctx.Err()
-			default:
-
-			}
-			if err != nil {
-				return nil, err
-			}
-
-			cc := common.ChainedClosable{}
-			if cw, ok := link.Writer.(common.Closable); ok {
-				cc = append(cc, cw)
-			}
-			if cr, ok := link.Reader.(common.Closable); ok {
-				cc = append(cc, cr)
-			}
-			return cnc.NewConnection(
-				cnc.ConnectionInputMulti(link.Writer),
-				cnc.ConnectionOutputMulti(link.Reader),
-				cnc.ConnectionOnClose(cc),
-			), nil
-		},
-	}
-	s.httpClient = &http.Client{
-		Timeout:   time.Second * 180,
-		Transport: tr,
-	}

 	return s, nil
 }

 // NewDoHLocalNameServer creates DOH client object for local resolving
-func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
+func NewDoHLocalNameServer(url *url.URL, clientIP net.IP) *DoHNameServer {
 	url.Scheme = "https"
-	s := baseDOHNameServer(url, "DOHL")
+	s := baseDOHNameServer(url, "DOHL", clientIP)
 	tr := &http.Transport{
 		IdleConnTimeout:   90 * time.Second,
 		ForceAttemptHTTP2: true,
@@ -115,12 +64,6 @@ func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
 				return nil, err
 			}
 			conn, err := internet.DialSystem(ctx, dest, nil)
-			log.Record(&log.AccessMessage{
-				From:   "DoH",
-				To:     s.dohURL,
-				Status: log.AccessAccepted,
-				Detour: "local",
-			})
 			if err != nil {
 				return nil, err
 			}
@@ -135,21 +78,23 @@ func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
 	return s
 }

-func baseDOHNameServer(url *url.URL, prefix string) *DoHNameServer {
+func baseDOHNameServer(url *url.URL, prefix string, clientIP net.IP) *DoHNameServer {
 	s := &DoHNameServer{
-		ips:    make(map[string]*record),
-		pub:    pubsub.NewService(),
-		name:   prefix + "//" + url.Host,
-		dohURL: url.String(),
+		ips:      make(map[string]record),
+		clientIP: clientIP,
+		pub:      pubsub.NewService(),
+		name:     prefix + "//" + url.Host,
+		dohURL:   url.String(),
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
 		Execute:  s.Cleanup,
 	}
+
 	return s
 }

-// Name implements Server.
+// Name returns client name
 func (s *DoHNameServer) Name() string {
 	return s.name
 }
@@ -181,7 +126,7 @@ func (s *DoHNameServer) Cleanup() error {
 	}

 	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
+		s.ips = make(map[string]record)
 	}

 	return nil
@@ -191,10 +136,7 @@ func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 	elapsed := time.Since(req.start)

 	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
+	rec := s.ips[req.domain]
 	updated := false

 	switch req.reqType {
@@ -204,7 +146,7 @@ func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
 			updated = true
 		}
 	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0, len(ipRec.IP))
+		addr := make([]net.Address, 0)
 		for _, ip := range ipRec.IP {
 			if len(ip.IP()) == net.IPv6len {
 				addr = append(addr, ip)
@@ -235,7 +177,7 @@ func (s *DoHNameServer) newReqID() uint16 {
 	return uint16(atomic.AddUint32(&s.reqID, 1))
 }

-func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
+func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, option IPOption) {
 	newError(s.name, " querying: ", domain).AtInfo().WriteToLog(session.ExportIDToError(ctx))

 	if s.name+"." == "DOH//"+domain {
@@ -243,7 +185,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 		return
 	}

-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP))

 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -256,7 +198,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 		go func(r *dnsRequest) {
 			// generate new context for each req, using same context
 			// may cause reqs all aborted if any one encounter an error
-			dnsCtx := ctx
+			dnsCtx := context.Background()

 			// reserve internal dns server requested Inbound
 			if inbound := session.InboundFromContext(ctx); inbound != nil {
@@ -264,8 +206,8 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			}

 			dnsCtx = session.ContextWithContent(dnsCtx, &session.Content{
-				Protocol:       "https",
-				SkipDNSResolve: true,
+				Protocol: "https",
+				//SkipRoutePick: true,
 			})

 			// forced to use mux for DOH
@@ -307,6 +249,41 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,

 	hc := s.httpClient

+	// Dispatched connection will be closed (interrupted) after each request
+	// This makes DOH inefficient without a keep-alived connection
+	// See: core/app/proxyman/outbound/handler.go:113
+	// Using mux (https request wrapped in a stream layer) improves the situation.
+	// Recommend to use NewDoHLocalNameServer (DOHL:) if xray instance is running on
+	//  a normal network eg. the server side of xray
+
+	if s.dispatcher != nil {
+		tr := &http.Transport{
+			MaxIdleConns:        30,
+			IdleConnTimeout:     90 * time.Second,
+			TLSHandshakeTimeout: 30 * time.Second,
+			ForceAttemptHTTP2:   true,
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				dest, err := net.ParseDestination(network + ":" + addr)
+				if err != nil {
+					return nil, err
+				}
+
+				link, err := s.dispatcher.Dispatch(ctx, dest)
+				if err != nil {
+					return nil, err
+				}
+				return cnc.NewConnection(
+					cnc.ConnectionInputMulti(link.Writer),
+					cnc.ConnectionOutputMulti(link.Reader),
+				), nil
+			},
+		}
+		hc = &http.Client{
+			Timeout:   time.Second * 180,
+			Transport: tr,
+		}
+	}
+
 	resp, err := hc.Do(req.WithContext(ctx))
 	if err != nil {
 		return nil, err
@@ -314,14 +291,14 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,

 	defer resp.Body.Close()
 	if resp.StatusCode != http.StatusOK {
-		io.Copy(io.Discard, resp.Body) // flush resp.Body so that the conn is reusable
+		io.Copy(ioutil.Discard, resp.Body) // flush resp.Body so that the conn is reusable
 		return nil, fmt.Errorf("DOH server returned code %d", resp.StatusCode)
 	}

-	return io.ReadAll(resp.Body)
+	return ioutil.ReadAll(resp.Body)
 }

-func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
+func (s *DoHNameServer) findIPsForDomain(domain string, option IPOption) ([]net.IP, error) {
 	s.RLock()
 	record, found := s.ips[domain]
 	s.RUnlock()
@@ -330,30 +307,30 @@ func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 		return nil, errRecordNotFound
 	}

-	var err4 error
-	var err6 error
 	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
+	var lastErr error
+	if option.IPv6Enable && record.AAAA != nil && record.AAAA.RCode == dnsmessage.RCodeSuccess {
+		aaaa, err := record.AAAA.getIPs()
+		if err != nil {
+			lastErr = err
+		}
+		ips = append(ips, aaaa...)
 	}

-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
+	if option.IPv4Enable && record.A != nil && record.A.RCode == dnsmessage.RCodeSuccess {
+		a, err := record.A.getIPs()
+		if err != nil {
+			lastErr = err
+		}
+		ips = append(ips, a...)
 	}

 	if len(ips) > 0 {
-		return toNetIP(ips)
+		return toNetIP(ips), nil
 	}

-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
+	if lastErr != nil {
+		return nil, lastErr
 	}

 	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
@@ -363,19 +340,14 @@ func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 	return nil, errRecordNotFound
 }

-// QueryIP implements Server.
-func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) { // nolint: dupl
+// QueryIP is called from dns.Server->queryIPTimeout
+func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, option IPOption) ([]net.IP, error) {
 	fqdn := Fqdn(domain)

-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
+	ips, err := s.findIPsForDomain(fqdn, option)
+	if err != errRecordNotFound {
+		newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+		return ips, err
 	}

 	// ipv4 and ipv6 belong to different subscription groups
@@ -404,13 +376,11 @@ func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net
 		}
 		close(done)
 	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
+	s.sendQuery(ctx, fqdn, option)

 	for {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
 			return ips, err
 		}

--- a/app/dns/fakedns/errors.generated.go
+++ b/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{})
-}
--- a/app/dns/fakedns/fake.go
+++ b/app/dns/fakedns/fake.go
@@ -1,244 +0,0 @@
-package fakedns
-
-import (
-	"context"
-	"math"
-	"math/big"
-	gonet "net"
-	"time"
-
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/cache"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/features/dns"
-)
-
-type Holder struct {
-	domainToIP cache.Lru
-	ipRange    *gonet.IPNet
-
-	config *FakeDnsPool
-}
-
-func (fkdns *Holder) IsIPInIPPool(ip net.Address) bool {
-	if ip.Family().IsDomain() {
-		return false
-	}
-	return fkdns.ipRange.Contains(ip.IP())
-}
-
-func (fkdns *Holder) GetFakeIPForDomain3(domain string, ipv4, ipv6 bool) []net.Address {
-	isIPv6 := fkdns.ipRange.IP.To4() == nil
-	if (isIPv6 && ipv6) || (!isIPv6 && ipv4) {
-		return fkdns.GetFakeIPForDomain(domain)
-	}
-	return []net.Address{}
-}
-
-func (*Holder) Type() interface{} {
-	return (*dns.FakeDNSEngine)(nil)
-}
-
-func (fkdns *Holder) Start() error {
-	if fkdns.config != nil && fkdns.config.IpPool != "" && fkdns.config.LruSize != 0 {
-		return fkdns.initializeFromConfig()
-	}
-	return newError("invalid fakeDNS setting")
-}
-
-func (fkdns *Holder) Close() error {
-	fkdns.domainToIP = nil
-	fkdns.ipRange = nil
-	return nil
-}
-
-func NewFakeDNSHolder() (*Holder, error) {
-	var fkdns *Holder
-	var err error
-
-	if fkdns, err = NewFakeDNSHolderConfigOnly(nil); err != nil {
-		return nil, newError("Unable to create Fake Dns Engine").Base(err).AtError()
-	}
-	err = fkdns.initialize(dns.FakeIPv4Pool, 65535)
-	if err != nil {
-		return nil, err
-	}
-	return fkdns, nil
-}
-
-func NewFakeDNSHolderConfigOnly(conf *FakeDnsPool) (*Holder, error) {
-	return &Holder{nil, nil, conf}, nil
-}
-
-func (fkdns *Holder) initializeFromConfig() error {
-	return fkdns.initialize(fkdns.config.IpPool, int(fkdns.config.LruSize))
-}
-
-func (fkdns *Holder) initialize(ipPoolCidr string, lruSize int) error {
-	var ipRange *gonet.IPNet
-	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()
-	}
-
-	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()
-	}
-	fkdns.domainToIP = cache.NewLru(lruSize)
-	fkdns.ipRange = ipRange
-	return nil
-}
-
-// GetFakeIPForDomain check and generate a fake IP for a domain name
-func (fkdns *Holder) GetFakeIPForDomain(domain string) []net.Address {
-	if v, ok := fkdns.domainToIP.Get(domain); ok {
-		return []net.Address{v.(net.Address)}
-	}
-	currentTimeMillis := uint64(time.Now().UnixNano() / 1e6)
-	ones, bits := fkdns.ipRange.Mask.Size()
-	rooms := bits - ones
-	if rooms < 64 {
-		currentTimeMillis %= (uint64(1) << rooms)
-	}
-	bigIntIP := big.NewInt(0).SetBytes(fkdns.ipRange.IP)
-	bigIntIP = bigIntIP.Add(bigIntIP, new(big.Int).SetUint64(currentTimeMillis))
-	var ip net.Address
-	for {
-		ip = net.IPAddress(bigIntIP.Bytes())
-
-		// if we run for a long time, we may go back to beginning and start seeing the IP in use
-		if _, ok := fkdns.domainToIP.PeekKeyFromValue(ip); !ok {
-			break
-		}
-
-		bigIntIP = bigIntIP.Add(bigIntIP, big.NewInt(1))
-		if !fkdns.ipRange.Contains(bigIntIP.Bytes()) {
-			bigIntIP = big.NewInt(0).SetBytes(fkdns.ipRange.IP)
-		}
-	}
-	fkdns.domainToIP.Put(domain, ip)
-	return []net.Address{ip}
-}
-
-// GetDomainFromFakeDNS check if an IP is a fake IP and have corresponding domain name
-func (fkdns *Holder) GetDomainFromFakeDNS(ip net.Address) string {
-	if !ip.Family().IsIP() || !fkdns.ipRange.Contains(ip.IP()) {
-		return ""
-	}
-	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()
-	return ""
-}
-
-type HolderMulti struct {
-	holders []*Holder
-
-	config *FakeDnsPoolMulti
-}
-
-func (h *HolderMulti) IsIPInIPPool(ip net.Address) bool {
-	if ip.Family().IsDomain() {
-		return false
-	}
-	for _, v := range h.holders {
-		if v.IsIPInIPPool(ip) {
-			return true
-		}
-	}
-	return false
-}
-
-func (h *HolderMulti) GetFakeIPForDomain3(domain string, ipv4, ipv6 bool) []net.Address {
-	var ret []net.Address
-	for _, v := range h.holders {
-		ret = append(ret, v.GetFakeIPForDomain3(domain, ipv4, ipv6)...)
-	}
-	return ret
-}
-
-func (h *HolderMulti) GetFakeIPForDomain(domain string) []net.Address {
-	var ret []net.Address
-	for _, v := range h.holders {
-		ret = append(ret, v.GetFakeIPForDomain(domain)...)
-	}
-	return ret
-}
-
-func (h *HolderMulti) GetDomainFromFakeDNS(ip net.Address) string {
-	for _, v := range h.holders {
-		if domain := v.GetDomainFromFakeDNS(ip); domain != "" {
-			return domain
-		}
-	}
-	return ""
-}
-
-func (h *HolderMulti) Type() interface{} {
-	return (*dns.FakeDNSEngine)(nil)
-}
-
-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)
-			}
-		} else {
-			return newError("invalid fakeDNS setting")
-		}
-	}
-	return nil
-}
-
-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 nil
-}
-
-func (h *HolderMulti) createHolderGroups() error {
-	for _, v := range h.config.Pools {
-		holder, err := NewFakeDNSHolderConfigOnly(v)
-		if err != nil {
-			return err
-		}
-		h.holders = append(h.holders, holder)
-	}
-	return nil
-}
-
-func NewFakeDNSHolderMulti(conf *FakeDnsPoolMulti) (*HolderMulti, error) {
-	holderMulti := &HolderMulti{nil, conf}
-	if err := holderMulti.createHolderGroups(); err != nil {
-		return nil, err
-	}
-	return holderMulti, nil
-}
-
-func init() {
-	common.Must(common.RegisterConfig((*FakeDnsPool)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		var f *Holder
-		var err error
-		if f, err = NewFakeDNSHolderConfigOnly(config.(*FakeDnsPool)); err != nil {
-			return nil, err
-		}
-		return f, nil
-	}))
-
-	common.Must(common.RegisterConfig((*FakeDnsPoolMulti)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		var f *HolderMulti
-		var err error
-		if f, err = NewFakeDNSHolderMulti(config.(*FakeDnsPoolMulti)); err != nil {
-			return nil, err
-		}
-		return f, nil
-	}))
-}
--- a/app/dns/fakedns/fakedns.go
+++ b/app/dns/fakedns/fakedns.go
@@ -1,3 +0,0 @@
-package fakedns
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
--- a/app/dns/fakedns/fakedns.pb.go
+++ b/app/dns/fakedns/fakedns.pb.go
@@ -1,224 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
-// source: app/dns/fakedns/fakedns.proto
-
-package fakedns
-
-import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-type FakeDnsPool struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	IpPool  string `protobuf:"bytes,1,opt,name=ip_pool,json=ipPool,proto3" json:"ip_pool,omitempty"` //CIDR of IP pool used as fake DNS IP
-	LruSize int64  `protobuf:"varint,2,opt,name=lruSize,proto3" json:"lruSize,omitempty"`            //Size of Pool for remembering relationship between domain name and IP address
-}
-
-func (x *FakeDnsPool) Reset() {
-	*x = FakeDnsPool{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *FakeDnsPool) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*FakeDnsPool) ProtoMessage() {}
-
-func (x *FakeDnsPool) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use FakeDnsPool.ProtoReflect.Descriptor instead.
-func (*FakeDnsPool) Descriptor() ([]byte, []int) {
-	return file_app_dns_fakedns_fakedns_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *FakeDnsPool) GetIpPool() string {
-	if x != nil {
-		return x.IpPool
-	}
-	return ""
-}
-
-func (x *FakeDnsPool) GetLruSize() int64 {
-	if x != nil {
-		return x.LruSize
-	}
-	return 0
-}
-
-type FakeDnsPoolMulti struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Pools []*FakeDnsPool `protobuf:"bytes,1,rep,name=pools,proto3" json:"pools,omitempty"`
-}
-
-func (x *FakeDnsPoolMulti) Reset() {
-	*x = FakeDnsPoolMulti{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *FakeDnsPoolMulti) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*FakeDnsPoolMulti) ProtoMessage() {}
-
-func (x *FakeDnsPoolMulti) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use FakeDnsPoolMulti.ProtoReflect.Descriptor instead.
-func (*FakeDnsPoolMulti) Descriptor() ([]byte, []int) {
-	return file_app_dns_fakedns_fakedns_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *FakeDnsPoolMulti) GetPools() []*FakeDnsPool {
-	if x != nil {
-		return x.Pools
-	}
-	return nil
-}
-
-var File_app_dns_fakedns_fakedns_proto protoreflect.FileDescriptor
-
-var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
-	0x0a, 0x1d, 0x61, 0x70, 0x70, 0x2f, 0x64, 0x6e, 0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e,
-	0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
-	0x14, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61,
-	0x6b, 0x65, 0x64, 0x6e, 0x73, 0x22, 0x40, 0x0a, 0x0b, 0x46, 0x61, 0x6b, 0x65, 0x44, 0x6e, 0x73,
-	0x50, 0x6f, 0x6f, 0x6c, 0x12, 0x17, 0x0a, 0x07, 0x69, 0x70, 0x5f, 0x70, 0x6f, 0x6f, 0x6c, 0x18,
-	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x69, 0x70, 0x50, 0x6f, 0x6f, 0x6c, 0x12, 0x18, 0x0a,
-	0x07, 0x6c, 0x72, 0x75, 0x53, 0x69, 0x7a, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x07,
-	0x6c, 0x72, 0x75, 0x53, 0x69, 0x7a, 0x65, 0x22, 0x4b, 0x0a, 0x10, 0x46, 0x61, 0x6b, 0x65, 0x44,
-	0x6e, 0x73, 0x50, 0x6f, 0x6f, 0x6c, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x12, 0x37, 0x0a, 0x05, 0x70,
-	0x6f, 0x6f, 0x6c, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x78, 0x72, 0x61,
-	0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e,
-	0x73, 0x2e, 0x46, 0x61, 0x6b, 0x65, 0x44, 0x6e, 0x73, 0x50, 0x6f, 0x6f, 0x6c, 0x52, 0x05, 0x70,
-	0x6f, 0x6f, 0x6c, 0x73, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64, 0x6e, 0x73, 0x2e, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73,
-	0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
-	0x70, 0x2f, 0x64, 0x6e, 0x73, 0x2f, 0x66, 0x61, 0x6b, 0x65, 0x64, 0x6e, 0x73, 0xaa, 0x02, 0x14,
-	0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x2e, 0x46, 0x61, 0x6b,
-	0x65, 0x64, 0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_app_dns_fakedns_fakedns_proto_rawDescOnce sync.Once
-	file_app_dns_fakedns_fakedns_proto_rawDescData = file_app_dns_fakedns_fakedns_proto_rawDesc
-)
-
-func file_app_dns_fakedns_fakedns_proto_rawDescGZIP() []byte {
-	file_app_dns_fakedns_fakedns_proto_rawDescOnce.Do(func() {
-		file_app_dns_fakedns_fakedns_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_dns_fakedns_fakedns_proto_rawDescData)
-	})
-	return file_app_dns_fakedns_fakedns_proto_rawDescData
-}
-
-var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_dns_fakedns_fakedns_proto_goTypes = []interface{}{
-	(*FakeDnsPool)(nil),      // 0: xray.app.dns.fakedns.FakeDnsPool
-	(*FakeDnsPoolMulti)(nil), // 1: xray.app.dns.fakedns.FakeDnsPoolMulti
-}
-var file_app_dns_fakedns_fakedns_proto_depIdxs = []int32{
-	0, // 0: xray.app.dns.fakedns.FakeDnsPoolMulti.pools:type_name -> xray.app.dns.fakedns.FakeDnsPool
-	1, // [1:1] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
-}
-
-func init() { file_app_dns_fakedns_fakedns_proto_init() }
-func file_app_dns_fakedns_fakedns_proto_init() {
-	if File_app_dns_fakedns_fakedns_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dns_fakedns_fakedns_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPool); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_fakedns_fakedns_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPoolMulti); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_app_dns_fakedns_fakedns_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   2,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_app_dns_fakedns_fakedns_proto_goTypes,
-		DependencyIndexes: file_app_dns_fakedns_fakedns_proto_depIdxs,
-		MessageInfos:      file_app_dns_fakedns_fakedns_proto_msgTypes,
-	}.Build()
-	File_app_dns_fakedns_fakedns_proto = out.File
-	file_app_dns_fakedns_fakedns_proto_rawDesc = nil
-	file_app_dns_fakedns_fakedns_proto_goTypes = nil
-	file_app_dns_fakedns_fakedns_proto_depIdxs = nil
-}
--- a/app/dns/fakedns/fakedns.proto
+++ b/app/dns/fakedns/fakedns.proto
@@ -1,16 +0,0 @@
-syntax = "proto3";
-
-package xray.app.dns.fakedns;
-option csharp_namespace = "Xray.App.Dns.Fakedns";
-option go_package = "github.com/xtls/xray-core/app/dns/fakedns";
-option java_package = "com.xray.app.dns.fakedns";
-option java_multiple_files = true;
-
-message FakeDnsPool{
-  string ip_pool = 1; //CIDR of IP pool used as fake DNS IP
-  int64  lruSize = 2; //Size of Pool for remembering relationship between domain name and IP address
-}
-
-message FakeDnsPoolMulti{
-  repeated FakeDnsPool pools = 1;
-}
--- a/app/dns/fakedns/fakedns_test.go
+++ b/app/dns/fakedns/fakedns_test.go
@@ -1,181 +0,0 @@
-package fakedns
-
-import (
-	"testing"
-
-	gonet "net"
-
-	"github.com/stretchr/testify/assert"
-
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/uuid"
-	"github.com/xtls/xray-core/features/dns"
-)
-
-var ipPrefix = "198.1"
-
-func TestNewFakeDnsHolder(_ *testing.T) {
-	_, err := NewFakeDNSHolder()
-	common.Must(err)
-}
-
-func TestFakeDnsHolderCreateMapping(t *testing.T) {
-	fkdns, err := NewFakeDNSHolder()
-	common.Must(err)
-
-	addr := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	assert.Equal(t, ipPrefix, addr[0].IP().String()[0:len(ipPrefix)])
-}
-
-func TestFakeDnsHolderCreateMappingMany(t *testing.T) {
-	fkdns, err := NewFakeDNSHolder()
-	common.Must(err)
-
-	addr := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	assert.Equal(t, ipPrefix, addr[0].IP().String()[0:len(ipPrefix)])
-
-	addr2 := fkdns.GetFakeIPForDomain("fakednstest2.example.com")
-	assert.Equal(t, ipPrefix, addr2[0].IP().String()[0:len(ipPrefix)])
-	assert.NotEqual(t, addr[0].IP().String(), addr2[0].IP().String())
-}
-
-func TestFakeDnsHolderCreateMappingManyAndResolve(t *testing.T) {
-	fkdns, err := NewFakeDNSHolder()
-	common.Must(err)
-
-	addr := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	addr2 := fkdns.GetFakeIPForDomain("fakednstest2.example.com")
-
-	{
-		result := fkdns.GetDomainFromFakeDNS(addr[0])
-		assert.Equal(t, "fakednstest.example.com", result)
-	}
-
-	{
-		result := fkdns.GetDomainFromFakeDNS(addr2[0])
-		assert.Equal(t, "fakednstest2.example.com", result)
-	}
-}
-
-func TestFakeDnsHolderCreateMappingManySingleDomain(t *testing.T) {
-	fkdns, err := NewFakeDNSHolder()
-	common.Must(err)
-
-	addr := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	addr2 := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	assert.Equal(t, addr[0].IP().String(), addr2[0].IP().String())
-}
-
-func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
-	fkdns, err := NewFakeDNSHolderConfigOnly(&FakeDnsPool{
-		IpPool:  dns.FakeIPv4Pool,
-		LruSize: 256,
-	})
-	common.Must(err)
-
-	err = fkdns.Start()
-
-	common.Must(err)
-
-	addr := fkdns.GetFakeIPForDomain("fakednstest.example.com")
-	addr2 := fkdns.GetFakeIPForDomain("fakednstest2.example.com")
-
-	for i := 0; i <= 8192; i++ {
-		{
-			result := fkdns.GetDomainFromFakeDNS(addr[0])
-			assert.Equal(t, "fakednstest.example.com", result)
-		}
-
-		{
-			result := fkdns.GetDomainFromFakeDNS(addr2[0])
-			assert.Equal(t, "fakednstest2.example.com", result)
-		}
-
-		{
-			uuid := uuid.New()
-			domain := uuid.String() + ".fakednstest.example.com"
-			tempAddr := fkdns.GetFakeIPForDomain(domain)
-			rsaddr := tempAddr[0].IP().String()
-
-			result := fkdns.GetDomainFromFakeDNS(net.ParseAddress(rsaddr))
-			assert.Equal(t, domain, result)
-		}
-	}
-}
-
-func TestFakeDNSMulti(t *testing.T) {
-	fakeMulti, err := NewFakeDNSHolderMulti(&FakeDnsPoolMulti{
-		Pools: []*FakeDnsPool{{
-			IpPool:  "240.0.0.0/12",
-			LruSize: 256,
-		}, {
-			IpPool:  "fddd:c5b4:ff5f:f4f0::/64",
-			LruSize: 256,
-		}},
-	},
-	)
-	common.Must(err)
-
-	err = fakeMulti.Start()
-
-	common.Must(err)
-
-	assert.Nil(t, err, "Should not throw error")
-	_ = fakeMulti
-
-	t.Run("checkInRange", func(t *testing.T) {
-		t.Run("ipv4", func(t *testing.T) {
-			inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{240, 0, 0, 5}))
-			assert.True(t, inPool)
-		})
-		t.Run("ipv6", func(t *testing.T) {
-			ip, err := gonet.ResolveIPAddr("ip", "fddd:c5b4:ff5f:f4f0::5")
-			assert.Nil(t, err)
-			inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
-			assert.True(t, inPool)
-		})
-		t.Run("ipv4_inverse", func(t *testing.T) {
-			inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{241, 0, 0, 5}))
-			assert.False(t, inPool)
-		})
-		t.Run("ipv6_inverse", func(t *testing.T) {
-			ip, err := gonet.ResolveIPAddr("ip", "fcdd:c5b4:ff5f:f4f0::5")
-			assert.Nil(t, err)
-			inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
-			assert.False(t, inPool)
-		})
-	})
-
-	t.Run("allocateTwoAddressForTwoPool", func(t *testing.T) {
-		address := fakeMulti.GetFakeIPForDomain("fakednstest.v2fly.org")
-		assert.Len(t, address, 2, "should be 2 address one for each pool")
-		t.Run("eachOfThemShouldResolve:0", func(t *testing.T) {
-			domain := fakeMulti.GetDomainFromFakeDNS(address[0])
-			assert.Equal(t, "fakednstest.v2fly.org", domain)
-		})
-		t.Run("eachOfThemShouldResolve:1", func(t *testing.T) {
-			domain := fakeMulti.GetDomainFromFakeDNS(address[1])
-			assert.Equal(t, "fakednstest.v2fly.org", domain)
-		})
-	})
-
-	t.Run("understandIPTypeSelector", func(t *testing.T) {
-		t.Run("ipv4", func(t *testing.T) {
-			address := fakeMulti.GetFakeIPForDomain3("fakednstestipv4.v2fly.org", true, false)
-			assert.Len(t, address, 1, "should be 1 address")
-			assert.True(t, address[0].Family().IsIPv4())
-		})
-		t.Run("ipv6", func(t *testing.T) {
-			address := fakeMulti.GetFakeIPForDomain3("fakednstestipv6.v2fly.org", false, true)
-			assert.Len(t, address, 1, "should be 1 address")
-			assert.True(t, address[0].Family().IsIPv6())
-		})
-		t.Run("ipv46", func(t *testing.T) {
-			address := fakeMulti.GetFakeIPForDomain3("fakednstestipv46.v2fly.org", true, true)
-			assert.Len(t, address, 2, "should be 2 address")
-			assert.True(t, address[0].Family().IsIPv4())
-			assert.True(t, address[1].Family().IsIPv6())
-		})
-	})
-}
--- a/app/dns/hosts.go
+++ b/app/dns/hosts.go
@@ -5,7 +5,6 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/features"
-	"github.com/xtls/xray-core/features/dns"
 )

 // StaticHosts represents static domain-ip mapping in DNS server.
@@ -14,6 +13,25 @@ type StaticHosts struct {
 	matchers *strmatcher.MatcherGroup
 }

+var typeMap = map[DomainMatchingType]strmatcher.Type{
+	DomainMatchingType_Full:      strmatcher.Full,
+	DomainMatchingType_Subdomain: strmatcher.Domain,
+	DomainMatchingType_Keyword:   strmatcher.Substr,
+	DomainMatchingType_Regex:     strmatcher.Regex,
+}
+
+func toStrMatcher(t DomainMatchingType, domain string) (strmatcher.Matcher, error) {
+	strMType, f := typeMap[t]
+	if !f {
+		return nil, newError("unknown mapping type", t).AtWarning()
+	}
+	matcher, err := strMType.New(domain)
+	if err != nil {
+		return nil, newError("failed to create str matcher").Base(err)
+	}
+	return matcher, nil
+}
+
 // NewStaticHosts creates a new StaticHosts instance.
 func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDomain) (*StaticHosts, error) {
 	g := new(strmatcher.MatcherGroup)
@@ -47,8 +65,6 @@ func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDoma
 		id := g.Add(matcher)
 		ips := make([]net.Address, 0, len(mapping.Ip)+1)
 		switch {
-		case len(mapping.ProxiedDomain) > 0:
-			ips = append(ips, net.DomainAddress(mapping.ProxiedDomain))
 		case len(mapping.Ip) > 0:
 			for _, ip := range mapping.Ip {
 				addr := net.IPAddress(ip)
@@ -57,53 +73,50 @@ func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDoma
 				}
 				ips = append(ips, addr)
 			}
+
+		case len(mapping.ProxiedDomain) > 0:
+			ips = append(ips, net.DomainAddress(mapping.ProxiedDomain))
+
 		default:
 			return nil, newError("neither IP address nor proxied domain specified for domain: ", mapping.Domain).AtWarning()
 		}

+		// Special handling for localhost IPv6. This is a dirty workaround as JSON config supports only single IP mapping.
+		if len(ips) == 1 && ips[0] == net.LocalHostIP {
+			ips = append(ips, net.LocalHostIPv6)
+		}
+
 		sh.ips[id] = ips
 	}

 	return sh, nil
 }

-func filterIP(ips []net.Address, option dns.IPOption) []net.Address {
+func filterIP(ips []net.Address, option IPOption) []net.Address {
 	filtered := make([]net.Address, 0, len(ips))
 	for _, ip := range ips {
 		if (ip.Family().IsIPv4() && option.IPv4Enable) || (ip.Family().IsIPv6() && option.IPv6Enable) {
 			filtered = append(filtered, ip)
 		}
 	}
+	if len(filtered) == 0 {
+		return nil
+	}
 	return filtered
 }

-func (h *StaticHosts) lookupInternal(domain string) []net.Address {
-	var ips []net.Address
-	for _, id := range h.matchers.Match(domain) {
+// LookupIP returns IP address for the given domain, if exists in this StaticHosts.
+func (h *StaticHosts) LookupIP(domain string, option IPOption) []net.Address {
+	indices := h.matchers.Match(domain)
+	if len(indices) == 0 {
+		return nil
+	}
+	ips := []net.Address{}
+	for _, id := range indices {
 		ips = append(ips, h.ips[id]...)
 	}
-	return ips
-}
-
-func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) []net.Address {
-	switch addrs := h.lookupInternal(domain); {
-	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()
-		if maxDepth > 0 {
-			unwrapped := h.lookup(addrs[0].Domain(), option, maxDepth-1)
-			if unwrapped != nil {
-				return unwrapped
-			}
-		}
-		return addrs
-	default: // IP record found, return a non-nil IP array
-		return filterIP(addrs, option)
+	if len(ips) == 1 && ips[0].Family().IsDomain() {
+		return ips
 	}
-}
-
-// Lookup returns IP addresses or proxied domain for the given domain, if exists in this StaticHosts.
-func (h *StaticHosts) Lookup(domain string, option dns.IPOption) []net.Address {
-	return h.lookup(domain, option, 5)
+	return filterIP(ips, option)
 }
--- a/app/dns/hosts_test.go
+++ b/app/dns/hosts_test.go
@@ -4,10 +4,10 @@ import (
 	"testing"

 	"github.com/google/go-cmp/cmp"
+
 	. "github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/features/dns"
 )

 func TestStaticHosts(t *testing.T) {
@@ -19,20 +19,6 @@ func TestStaticHosts(t *testing.T) {
 				{1, 1, 1, 1},
 			},
 		},
-		{
-			Type:   DomainMatchingType_Full,
-			Domain: "proxy.xray.com",
-			Ip: [][]byte{
-				{1, 2, 3, 4},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
-			},
-			ProxiedDomain: "another-proxy.xray.com",
-		},
-		{
-			Type:          DomainMatchingType_Full,
-			Domain:        "proxy2.xray.com",
-			ProxiedDomain: "proxy.xray.com",
-		},
 		{
 			Type:   DomainMatchingType_Subdomain,
 			Domain: "example.cn",
@@ -45,7 +31,6 @@ func TestStaticHosts(t *testing.T) {
 			Domain: "baidu.com",
 			Ip: [][]byte{
 				{127, 0, 0, 1},
-				{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},
 			},
 		},
 	}
@@ -54,7 +39,7 @@ func TestStaticHosts(t *testing.T) {
 	common.Must(err)

 	{
-		ips := hosts.Lookup("example.com", dns.IPOption{
+		ips := hosts.LookupIP("example.com", IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -67,33 +52,7 @@ func TestStaticHosts(t *testing.T) {
 	}

 	{
-		domain := hosts.Lookup("proxy.xray.com", dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-		})
-		if len(domain) != 1 {
-			t.Error("expect 1 domain, but got ", len(domain))
-		}
-		if diff := cmp.Diff(domain[0].Domain(), "another-proxy.xray.com"); diff != "" {
-			t.Error(diff)
-		}
-	}
-
-	{
-		domain := hosts.Lookup("proxy2.xray.com", dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-		})
-		if len(domain) != 1 {
-			t.Error("expect 1 domain, but got ", len(domain))
-		}
-		if diff := cmp.Diff(domain[0].Domain(), "another-proxy.xray.com"); diff != "" {
-			t.Error(diff)
-		}
-	}
-
-	{
-		ips := hosts.Lookup("www.example.cn", dns.IPOption{
+		ips := hosts.LookupIP("www.example.cn", IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -106,7 +65,7 @@ func TestStaticHosts(t *testing.T) {
 	}

 	{
-		ips := hosts.Lookup("baidu.com", dns.IPOption{
+		ips := hosts.LookupIP("baidu.com", IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 		})
--- a/app/dns/nameserver.go
+++ b/app/dns/nameserver.go
@@ -2,219 +2,53 @@ package dns

 import (
 	"context"
-	"net/url"
-	"strings"
-	"time"

-	"github.com/xtls/xray-core/app/router"
-	"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/core"
-	"github.com/xtls/xray-core/features/dns"
-	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/features/dns/localdns"
 )

-// Server is the interface for Name Server.
-type Server interface {
-	// Name of the Client.
-	Name() string
-	// QueryIP sends IP queries to its configured server.
-	QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns.IPOption, disableCache bool) ([]net.IP, error)
+// IPOption is an object for IP query options.
+type IPOption struct {
+	IPv4Enable bool
+	IPv6Enable bool
 }

 // Client is the interface for DNS client.
-type Client struct {
-	server       Server
-	clientIP     net.IP
-	skipFallback bool
-	domains      []string
-	expectIPs    []*router.GeoIPMatcher
+type Client interface {
+	// Name of the Client.
+	Name() string
+
+	// QueryIP sends IP queries to its configured server.
+	QueryIP(ctx context.Context, domain string, option IPOption) ([]net.IP, error)
 }

-var errExpectedIPNonMatch = errors.New("expectIPs not match")
-
-// NewServer creates a name server object according to the network destination url.
-func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, error) {
-	if address := dest.Address; address.Family().IsDomain() {
-		u, err := url.Parse(address.Domain())
-		if err != nil {
-			return nil, err
-		}
-		switch {
-		case strings.EqualFold(u.String(), "localhost"):
-			return NewLocalNameServer(), nil
-		case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
-			return NewDoHNameServer(u, dispatcher)
-		case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
-			return NewDoHLocalNameServer(u), nil
-		case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
-			return NewQUICNameServer(u)
-		case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
-			return NewTCPNameServer(u, dispatcher)
-		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
-			return NewTCPLocalNameServer(u)
-		case strings.EqualFold(u.String(), "fakedns"):
-			return NewFakeDNSServer(), nil
-		}
-	}
-	if dest.Network == net.Network_Unknown {
-		dest.Network = net.Network_UDP
-	}
-	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()
+type LocalNameServer struct {
+	client *localdns.Client
 }

-// NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
-func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container router.GeoIPMatcherContainer, matcherInfos *[]*DomainMatcherInfo, updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error) (*Client, error) {
-	client := &Client{}
-
-	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
-		// Create a new server for each client for now
-		server, err := NewServer(ns.Address.AsDestination(), dispatcher)
-		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
-		}
-
-		// Priotize local domains with specific TLDs or without any dot to local DNS
-		if _, isLocalDNS := server.(*LocalNameServer); isLocalDNS {
-			ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
-			ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
-			// The following lines is a solution to avoid core panics（rule index out of range） when setting `localhost` DNS client in config.
-			// Because the `localhost` DNS client will apend len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
-			// But `matcherInfos` has no enough length to add rules, which leads to core panics (rule index out of range).
-			// To avoid this, the length of `matcherInfos` must be equal to the expected, so manually append it with Golang default zero value first for later modification.
-			// Related issues:
-			// https://github.com/v2fly/v2ray-core/issues/529
-			// https://github.com/v2fly/v2ray-core/issues/719
-			for i := 0; i < len(localTLDsAndDotlessDomains); i++ {
-				*matcherInfos = append(*matcherInfos, &DomainMatcherInfo{
-					clientIdx:     uint16(0),
-					domainRuleIdx: uint16(0),
-				})
-			}
-		}
-
-		// Establish domain rules
-		var rules []string
-		ruleCurr := 0
-		ruleIter := 0
-		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()
-			}
-			originalRuleIdx := ruleCurr
-			if ruleCurr < len(ns.OriginalRules) {
-				rule := ns.OriginalRules[ruleCurr]
-				if ruleCurr >= len(rules) {
-					rules = append(rules, rule.Rule)
-				}
-				ruleIter++
-				if ruleIter >= int(rule.Size) {
-					ruleIter = 0
-					ruleCurr++
-				}
-			} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
-				rules = append(rules, domainRule.String())
-				ruleCurr++
-			}
-			err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
-			if err != nil {
-				return newError("failed to create prioritized domain").Base(err).AtWarning()
-			}
-		}
-
-		// Establish expected IPs
-		var matchers []*router.GeoIPMatcher
-		for _, geoip := range ns.Geoip {
-			matcher, err := container.Add(geoip)
-			if err != nil {
-				return newError("failed to create ip matcher").Base(err).AtWarning()
-			}
-			matchers = append(matchers, matcher)
-		}
-
-		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()
-			case *net.IPOrDomain_Ip:
-				newError("DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
-			}
-		}
-
-		client.server = server
-		client.clientIP = clientIP
-		client.skipFallback = ns.SkipFallback
-		client.domains = rules
-		client.expectIPs = matchers
-		return nil
-	})
-	return client, err
-}
-
-// NewSimpleClient creates a DNS client with a simple destination.
-func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
-	client := &Client{}
-	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
-		server, err := NewServer(endpoint.AsDestination(), dispatcher)
-		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
-		}
-		client.server = server
-		client.clientIP = clientIP
-		return nil
-	})
-
-	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()
-		case *net.IPOrDomain_Ip:
-			newError("DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
-		}
+func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, option IPOption) ([]net.IP, error) {
+	if option.IPv4Enable && option.IPv6Enable {
+		return s.client.LookupIP(domain)
 	}

-	return client, err
+	if option.IPv4Enable {
+		return s.client.LookupIPv4(domain)
+	}
+
+	if option.IPv6Enable {
+		return s.client.LookupIPv6(domain)
+	}
+
+	return nil, newError("neither IPv4 nor IPv6 is enabled")
 }

-// Name returns the server name the client manages.
-func (c *Client) Name() string {
-	return c.server.Name()
+func (s *LocalNameServer) Name() string {
+	return "localhost"
 }

-// QueryIP send DNS query to the name server with the client's IP.
-func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption, disableCache bool) ([]net.IP, error) {
-	ctx, cancel := context.WithTimeout(ctx, 4*time.Second)
-	ips, err := c.server.QueryIP(ctx, domain, c.clientIP, option, disableCache)
-	cancel()
-
-	if err != nil {
-		return ips, err
+func NewLocalNameServer() *LocalNameServer {
+	newError("DNS: created localhost client").AtInfo().WriteToLog()
+	return &LocalNameServer{
+		client: localdns.New(),
 	}
-	return c.MatchExpectedIPs(domain, ips)
-}
-
-// MatchExpectedIPs matches queried domain IPs with expected IPs and returns matched ones.
-func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error) {
-	if len(c.expectIPs) == 0 {
-		return ips, nil
-	}
-	newIps := []net.IP{}
-	for _, ip := range ips {
-		for _, matcher := range c.expectIPs {
-			if matcher.Match(ip) {
-				newIps = append(newIps, ip)
-				break
-			}
-		}
-	}
-	if len(newIps) == 0 {
-		return nil, errExpectedIPNonMatch
-	}
-	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
-	return newIps, nil
 }
--- a/app/dns/nameserver_doh_test.go
+++ b/app/dns/nameserver_doh_test.go
@@ -1,60 +0,0 @@
-package dns_test
-
-import (
-	"context"
-	"net/url"
-	"testing"
-	"time"
-
-	"github.com/google/go-cmp/cmp"
-
-	. "github.com/xtls/xray-core/app/dns"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	dns_feature "github.com/xtls/xray-core/features/dns"
-)
-
-func TestDOHNameServer(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-}
-
-func TestDOHNameServerWithCache(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, true)
-	cancel()
-	common.Must(err)
-	if r := cmp.Diff(ips2, ips); r != "" {
-		t.Fatal(r)
-	}
-}
--- a/app/dns/nameserver_fakedns.go
+++ b/app/dns/nameserver_fakedns.go
@@ -1,49 +0,0 @@
-package dns
-
-import (
-	"context"
-
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/dns"
-)
-
-type FakeDNSServer struct {
-	fakeDNSEngine dns.FakeDNSEngine
-}
-
-func NewFakeDNSServer() *FakeDNSServer {
-	return &FakeDNSServer{}
-}
-
-func (FakeDNSServer) Name() string {
-	return "FakeDNS"
-}
-
-func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
-	if f.fakeDNSEngine == nil {
-		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()
-		}
-	}
-	var ips []net.Address
-	if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
-		ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)
-	} else {
-		ips = f.fakeDNSEngine.GetFakeIPForDomain(domain)
-	}
-
-	netIP, err := toNetIP(ips)
-	if err != nil {
-		return nil, newError("Unable to convert IP to net ip").Base(err).AtError()
-	}
-
-	newError(f.Name(), " got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
-
-	if len(netIP) > 0 {
-		return netIP, nil
-	}
-	return nil, dns.ErrEmptyResponse
-}
--- a/app/dns/nameserver_local.go
+++ b/app/dns/nameserver_local.go
@@ -1,51 +0,0 @@
-package dns
-
-import (
-	"context"
-	"strings"
-
-	"github.com/xtls/xray-core/features/dns"
-
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/features/dns/localdns"
-)
-
-// LocalNameServer is an wrapper over local DNS feature.
-type LocalNameServer struct {
-	client *localdns.Client
-}
-
-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) {
-	ips, err = s.client.LookupIP(domain, option)
-
-	if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) {
-		err = dns.ErrEmptyResponse
-	}
-
-	if len(ips) > 0 {
-		newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
-	}
-
-	return
-}
-
-// Name implements Server.
-func (s *LocalNameServer) Name() string {
-	return "localhost"
-}
-
-// NewLocalNameServer creates localdns server object for directly lookup in system DNS.
-func NewLocalNameServer() *LocalNameServer {
-	newError("DNS: created localhost client").AtInfo().WriteToLog()
-	return &LocalNameServer{
-		client: localdns.New(),
-	}
-}
-
-// NewLocalDNSClient creates localdns client object for directly lookup in system DNS.
-func NewLocalDNSClient() *Client {
-	return &Client{server: NewLocalNameServer()}
-}
--- a/app/dns/nameserver_quic.go
+++ b/app/dns/nameserver_quic.go
@@ -1,389 +0,0 @@
-package dns
-
-import (
-	"context"
-	"net/url"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"github.com/lucas-clemente/quic-go"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/buf"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/protocol/dns"
-	"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"
-	"github.com/xtls/xray-core/transport/internet/tls"
-	"golang.org/x/net/dns/dnsmessage"
-	"golang.org/x/net/http2"
-)
-
-// NextProtoDQ - During connection establishment, DNS/QUIC support is indicated
-// by selecting the ALPN token "dq" in the crypto handshake.
-const NextProtoDQ = "doq-i00"
-
-const handshakeTimeout = time.Second * 8
-
-// QUICNameServer implemented DNS over QUIC
-type QUICNameServer struct {
-	sync.RWMutex
-	ips         map[string]*record
-	pub         *pubsub.Service
-	cleanup     *task.Periodic
-	reqID       uint32
-	name        string
-	destination *net.Destination
-	session     quic.Session
-}
-
-// NewQUICNameServer creates DNS-over-QUIC client object for local resolving
-func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
-	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()
-
-	var err error
-	port := net.Port(784)
-	if url.Port() != "" {
-		port, err = net.PortFromString(url.Port())
-		if err != nil {
-			return nil, err
-		}
-	}
-	dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)
-
-	s := &QUICNameServer{
-		ips:         make(map[string]*record),
-		pub:         pubsub.NewService(),
-		name:        url.String(),
-		destination: &dest,
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
-	}
-
-	return s, nil
-}
-
-// Name returns client name
-func (s *QUICNameServer) Name() string {
-	return s.name
-}
-
-// Cleanup clears expired items from cache
-func (s *QUICNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *QUICNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
-}
-
-func (s *QUICNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
-}
-
-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))
-
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
-
-	var deadline time.Time
-	if d, ok := ctx.Deadline(); ok {
-		deadline = d
-	} else {
-		deadline = time.Now().Add(time.Second * 5)
-	}
-
-	for _, req := range reqs {
-		go func(r *dnsRequest) {
-			// generate new context for each req, using same context
-			// may cause reqs all aborted if any one encounter an error
-			dnsCtx := ctx
-
-			// reserve internal dns server requested Inbound
-			if inbound := session.InboundFromContext(ctx); inbound != nil {
-				dnsCtx = session.ContextWithInbound(dnsCtx, inbound)
-			}
-
-			dnsCtx = session.ContextWithContent(dnsCtx, &session.Content{
-				Protocol:       "quic",
-				SkipDNSResolve: true,
-			})
-
-			var cancel context.CancelFunc
-			dnsCtx, cancel = context.WithDeadline(dnsCtx, deadline)
-			defer cancel()
-
-			b, err := dns.PackMessage(r.msg)
-			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			conn, err := s.openStream(dnsCtx)
-			if err != nil {
-				newError("failed to open quic session").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			_, err = conn.Write(b.Bytes())
-			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			_ = conn.Close()
-
-			respBuf := buf.New()
-			defer respBuf.Release()
-			n, err := respBuf.ReadFrom(conn)
-			if err != nil && n == 0 {
-				newError("failed to read response").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			rec, err := parseResponse(respBuf.Bytes())
-			if err != nil {
-				newError("failed to handle response").Base(err).AtError().WriteToLog()
-				return
-			}
-			s.updateIP(r, rec)
-		}(req)
-	}
-}
-
-func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	return nil, errRecordNotFound
-}
-
-// QueryIP is called from dns.Server->queryIPTimeout
-func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
-	fqdn := Fqdn(domain)
-
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
-}
-
-func isActive(s quic.Session) bool {
-	select {
-	case <-s.Context().Done():
-		return false
-	default:
-		return true
-	}
-}
-
-func (s *QUICNameServer) getSession() (quic.Session, error) {
-	var session quic.Session
-	s.RLock()
-	session = s.session
-	if session != nil && isActive(session) {
-		s.RUnlock()
-		return session, nil
-	}
-	if session != nil {
-		// we're recreating the session, let's create a new one
-		_ = session.CloseWithError(0, "")
-	}
-	s.RUnlock()
-
-	s.Lock()
-	defer s.Unlock()
-
-	var err error
-	session, err = s.openSession()
-	if err != nil {
-		// This does not look too nice, but QUIC (or maybe quic-go)
-		// doesn't seem stable enough.
-		// Maybe retransmissions aren't fully implemented in quic-go?
-		// Anyways, the simple solution is to make a second try when
-		// it fails to open the QUIC session.
-		session, err = s.openSession()
-		if err != nil {
-			return nil, err
-		}
-	}
-	s.session = session
-	return session, nil
-}
-
-func (s *QUICNameServer) openSession() (quic.Session, error) {
-	tlsConfig := tls.Config{}
-	quicConfig := &quic.Config{
-		HandshakeIdleTimeout: handshakeTimeout,
-	}
-
-	session, err := quic.DialAddrContext(context.Background(), s.destination.NetAddr(), tlsConfig.GetTLSConfig(tls.WithNextProto("http/1.1", http2.NextProtoTLS, NextProtoDQ)), quicConfig)
-	if err != nil {
-		return nil, err
-	}
-
-	return session, nil
-}
-
-func (s *QUICNameServer) openStream(ctx context.Context) (quic.Stream, error) {
-	session, err := s.getSession()
-	if err != nil {
-		return nil, err
-	}
-
-	// open a new stream
-	return session.OpenStreamSync(ctx)
-}
--- a/app/dns/nameserver_quic_test.go
+++ b/app/dns/nameserver_quic_test.go
@@ -1,44 +0,0 @@
-package dns_test
-
-import (
-	"context"
-	"net/url"
-	"testing"
-	"time"
-
-	"github.com/xtls/xray-core/features/dns"
-
-	"github.com/google/go-cmp/cmp"
-
-	. "github.com/xtls/xray-core/app/dns"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-)
-
-func TestQUICNameServer(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
-	common.Must(err)
-	s, err := NewQUICNameServer(url)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, true)
-	cancel()
-	common.Must(err)
-	if r := cmp.Diff(ips2, ips); r != "" {
-		t.Fatal(r)
-	}
-}
--- a/app/dns/nameserver_tcp.go
+++ b/app/dns/nameserver_tcp.go
@@ -1,362 +0,0 @@
-package dns
-
-import (
-	"bytes"
-	"context"
-	"encoding/binary"
-	"net/url"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"golang.org/x/net/dns/dnsmessage"
-
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/buf"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/net/cnc"
-	"github.com/xtls/xray-core/common/protocol/dns"
-	"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"
-	"github.com/xtls/xray-core/features/routing"
-	"github.com/xtls/xray-core/transport/internet"
-)
-
-// TCPNameServer implemented DNS over TCP (RFC7766).
-type TCPNameServer struct {
-	sync.RWMutex
-	name        string
-	destination *net.Destination
-	ips         map[string]*record
-	pub         *pubsub.Service
-	cleanup     *task.Periodic
-	reqID       uint32
-	dial        func(context.Context) (net.Conn, error)
-}
-
-// NewTCPNameServer creates DNS over TCP server object for remote resolving.
-func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCP")
-	if err != nil {
-		return nil, err
-	}
-
-	s.dial = func(ctx context.Context) (net.Conn, error) {
-		link, err := dispatcher.Dispatch(ctx, *s.destination)
-		if err != nil {
-			return nil, err
-		}
-
-		return cnc.NewConnection(
-			cnc.ConnectionInputMulti(link.Writer),
-			cnc.ConnectionOutputMulti(link.Reader),
-		), nil
-	}
-
-	return s, nil
-}
-
-// NewTCPLocalNameServer creates DNS over TCP client object for local resolving
-func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCPL")
-	if err != nil {
-		return nil, err
-	}
-
-	s.dial = func(ctx context.Context) (net.Conn, error) {
-		return internet.DialSystem(ctx, *s.destination, nil)
-	}
-
-	return s, nil
-}
-
-func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
-	var err error
-	port := net.Port(53)
-	if url.Port() != "" {
-		port, err = net.PortFromString(url.Port())
-		if err != nil {
-			return nil, err
-		}
-	}
-	dest := net.TCPDestination(net.ParseAddress(url.Hostname()), port)
-
-	s := &TCPNameServer{
-		destination: &dest,
-		ips:         make(map[string]*record),
-		pub:         pubsub.NewService(),
-		name:        prefix + "//" + dest.NetAddr(),
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
-	}
-
-	return s, nil
-}
-
-// Name implements Server.
-func (s *TCPNameServer) Name() string {
-	return s.name
-}
-
-// Cleanup clears expired items from cache
-func (s *TCPNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *TCPNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
-}
-
-func (s *TCPNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
-}
-
-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))
-
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
-
-	var deadline time.Time
-	if d, ok := ctx.Deadline(); ok {
-		deadline = d
-	} else {
-		deadline = time.Now().Add(time.Second * 5)
-	}
-
-	for _, req := range reqs {
-		go func(r *dnsRequest) {
-			dnsCtx := ctx
-
-			if inbound := session.InboundFromContext(ctx); inbound != nil {
-				dnsCtx = session.ContextWithInbound(dnsCtx, inbound)
-			}
-
-			dnsCtx = session.ContextWithContent(dnsCtx, &session.Content{
-				Protocol:       "dns",
-				SkipDNSResolve: true,
-			})
-
-			var cancel context.CancelFunc
-			dnsCtx, cancel = context.WithDeadline(dnsCtx, deadline)
-			defer cancel()
-
-			b, err := dns.PackMessage(r.msg)
-			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			conn, err := s.dial(dnsCtx)
-			if err != nil {
-				newError("failed to dial namesever").Base(err).AtError().WriteToLog()
-				return
-			}
-			defer conn.Close()
-			dnsReqBuf := buf.New()
-			binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
-			dnsReqBuf.Write(b.Bytes())
-			b.Release()
-
-			_, err = conn.Write(dnsReqBuf.Bytes())
-			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
-				return
-			}
-			dnsReqBuf.Release()
-
-			respBuf := buf.New()
-			defer respBuf.Release()
-			n, err := respBuf.ReadFullFrom(conn, 2)
-			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
-				return
-			}
-			var length int16
-			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
-			if err != nil {
-				newError("failed to parse response length").Base(err).AtError().WriteToLog()
-				return
-			}
-			respBuf.Clear()
-			n, err = respBuf.ReadFullFrom(conn, int32(length))
-			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			rec, err := parseResponse(respBuf.Bytes())
-			if err != nil {
-				newError("failed to parse DNS over TCP response").Base(err).AtError().WriteToLog()
-				return
-			}
-
-			s.updateIP(r, rec)
-		}(req)
-	}
-}
-
-func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	return nil, dns_feature.ErrEmptyResponse
-}
-
-// QueryIP implements Server.
-func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
-	fqdn := Fqdn(domain)
-
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			return ips, err
-		}
-	}
-
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-
-	for {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			return ips, err
-		}
-
-		select {
-		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
-		}
-	}
-}
--- a/app/dns/nameserver_tcp_test.go
+++ b/app/dns/nameserver_tcp_test.go
@@ -1,60 +0,0 @@
-package dns_test
-
-import (
-	"context"
-	"net/url"
-	"testing"
-	"time"
-
-	"github.com/google/go-cmp/cmp"
-
-	. "github.com/xtls/xray-core/app/dns"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	dns_feature "github.com/xtls/xray-core/features/dns"
-)
-
-func TestTCPLocalNameServer(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-}
-
-func TestTCPLocalNameServerWithCache(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, true)
-	cancel()
-	common.Must(err)
-	if r := cmp.Diff(ips2, ips); r != "" {
-		t.Fatal(r)
-	}
-}
--- a/app/dns/nameserver_local_test.go
+++ b/app/dns/nameserver_local_test.go
@@ -5,21 +5,17 @@ import (
 	"testing"
 	"time"

-	"github.com/xtls/xray-core/common/net"
-
 	. "github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/features/dns"
 )

 func TestLocalNameServer(t *testing.T) {
 	s := NewLocalNameServer()
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP{}, dns.IPOption{
+	ips, err := s.QueryIP(ctx, "google.com", IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-		FakeEnable: false,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
--- a/app/dns/server.go
+++ b/app/dns/server.go
@@ -0,0 +1,448 @@
+package dns
+
+//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/url"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/app/router"
+	"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/common/strmatcher"
+	"github.com/xtls/xray-core/common/uuid"
+	core "github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features"
+	"github.com/xtls/xray-core/features/dns"
+	"github.com/xtls/xray-core/features/routing"
+)
+
+// Server is a DNS rely server.
+type Server struct {
+	sync.Mutex
+	hosts         *StaticHosts
+	clientIP      net.IP
+	clients       []Client             // clientIdx -> Client
+	ipIndexMap    []*MultiGeoIPMatcher // clientIdx -> *MultiGeoIPMatcher
+	domainRules   [][]string           // clientIdx -> domainRuleIdx -> DomainRule
+	domainMatcher strmatcher.IndexMatcher
+	matcherInfos  []DomainMatcherInfo // matcherIdx -> DomainMatcherInfo
+	tag           string
+}
+
+// DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
+type DomainMatcherInfo struct {
+	clientIdx     uint16
+	domainRuleIdx uint16
+}
+
+// MultiGeoIPMatcher for match
+type MultiGeoIPMatcher struct {
+	matchers []*router.GeoIPMatcher
+}
+
+var errExpectedIPNonMatch = errors.New("expectIPs not match")
+
+// Match check ip match
+func (c *MultiGeoIPMatcher) Match(ip net.IP) bool {
+	for _, matcher := range c.matchers {
+		if matcher.Match(ip) {
+			return true
+		}
+	}
+	return false
+}
+
+// HasMatcher check has matcher
+func (c *MultiGeoIPMatcher) HasMatcher() bool {
+	return len(c.matchers) > 0
+}
+
+func generateRandomTag() string {
+	id := uuid.New()
+	return "xray.system." + id.String()
+}
+
+// New creates a new DNS server with given configuration.
+func New(ctx context.Context, config *Config) (*Server, error) {
+	server := &Server{
+		clients: make([]Client, 0, len(config.NameServers)+len(config.NameServer)),
+		tag:     config.Tag,
+	}
+	if server.tag == "" {
+		server.tag = generateRandomTag()
+	}
+	if len(config.ClientIp) > 0 {
+		if len(config.ClientIp) != net.IPv4len && len(config.ClientIp) != net.IPv6len {
+			return nil, newError("unexpected IP length", len(config.ClientIp))
+		}
+		server.clientIP = net.IP(config.ClientIp)
+	}
+
+	hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
+	if err != nil {
+		return nil, newError("failed to create hosts").Base(err)
+	}
+	server.hosts = hosts
+
+	addNameServer := func(ns *NameServer) int {
+		endpoint := ns.Address
+		address := endpoint.Address.AsAddress()
+
+		switch {
+		case address.Family().IsDomain() && address.Domain() == "localhost":
+			server.clients = append(server.clients, NewLocalNameServer())
+			// Priotize local domains with specific TLDs or without any dot to local DNS
+			// References:
+			// https://www.iana.org/assignments/special-use-domain-names/special-use-domain-names.xhtml
+			// https://unix.stackexchange.com/questions/92441/whats-the-difference-between-local-home-and-lan
+			localTLDsAndDotlessDomains := []*NameServer_PriorityDomain{
+				{Type: DomainMatchingType_Regex, Domain: "^[^.]+$"}, // This will only match domains without any dot
+				{Type: DomainMatchingType_Subdomain, Domain: "local"},
+				{Type: DomainMatchingType_Subdomain, Domain: "localdomain"},
+				{Type: DomainMatchingType_Subdomain, Domain: "localhost"},
+				{Type: DomainMatchingType_Subdomain, Domain: "lan"},
+				{Type: DomainMatchingType_Subdomain, Domain: "home.arpa"},
+				{Type: DomainMatchingType_Subdomain, Domain: "example"},
+				{Type: DomainMatchingType_Subdomain, Domain: "invalid"},
+				{Type: DomainMatchingType_Subdomain, Domain: "test"},
+			}
+			ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
+
+		case address.Family().IsDomain() && strings.HasPrefix(address.Domain(), "https+local://"):
+			// URI schemed string treated as domain
+			// DOH Local mode
+			u, err := url.Parse(address.Domain())
+			if err != nil {
+				log.Fatalln(newError("DNS config error").Base(err))
+			}
+			server.clients = append(server.clients, NewDoHLocalNameServer(u, server.clientIP))
+
+		case address.Family().IsDomain() && strings.HasPrefix(address.Domain(), "https://"):
+			// DOH Remote mode
+			u, err := url.Parse(address.Domain())
+			if err != nil {
+				log.Fatalln(newError("DNS config error").Base(err))
+			}
+			idx := len(server.clients)
+			server.clients = append(server.clients, nil)
+
+			// need the core dispatcher, register DOHClient at callback
+			common.Must(core.RequireFeatures(ctx, func(d routing.Dispatcher) {
+				c, err := NewDoHNameServer(u, d, server.clientIP)
+				if err != nil {
+					log.Fatalln(newError("DNS config error").Base(err))
+				}
+				server.clients[idx] = c
+			}))
+
+		default:
+			// UDP classic DNS mode
+			dest := endpoint.AsDestination()
+			if dest.Network == net.Network_Unknown {
+				dest.Network = net.Network_UDP
+			}
+			if dest.Network == net.Network_UDP {
+				idx := len(server.clients)
+				server.clients = append(server.clients, nil)
+
+				common.Must(core.RequireFeatures(ctx, func(d routing.Dispatcher) {
+					server.clients[idx] = NewClassicNameServer(dest, d, server.clientIP)
+				}))
+			}
+		}
+		server.ipIndexMap = append(server.ipIndexMap, nil)
+		return len(server.clients) - 1
+	}
+
+	if len(config.NameServers) > 0 {
+		features.PrintDeprecatedFeatureWarning("simple DNS server")
+		for _, destPB := range config.NameServers {
+			addNameServer(&NameServer{Address: destPB})
+		}
+	}
+
+	if len(config.NameServer) > 0 {
+		clientIndices := []int{}
+		domainRuleCount := 0
+		for _, ns := range config.NameServer {
+			idx := addNameServer(ns)
+			clientIndices = append(clientIndices, idx)
+			domainRuleCount += len(ns.PrioritizedDomain)
+		}
+
+		domainRules := make([][]string, len(server.clients))
+		domainMatcher := &strmatcher.MatcherGroup{}
+		matcherInfos := make([]DomainMatcherInfo, domainRuleCount+1) // matcher index starts from 1
+		var geoIPMatcherContainer router.GeoIPMatcherContainer
+		for nidx, ns := range config.NameServer {
+			idx := clientIndices[nidx]
+
+			// Establish domain rule matcher
+			rules := []string{}
+			ruleCurr := 0
+			ruleIter := 0
+			for _, domain := range ns.PrioritizedDomain {
+				matcher, err := toStrMatcher(domain.Type, domain.Domain)
+				if err != nil {
+					return nil, newError("failed to create prioritized domain").Base(err).AtWarning()
+				}
+				midx := domainMatcher.Add(matcher)
+				if midx >= uint32(len(matcherInfos)) { // This rarely happens according to current matcher's implementation
+					newError("expanding domain matcher info array to size ", midx, " when adding ", matcher).AtDebug().WriteToLog()
+					matcherInfos = append(matcherInfos, make([]DomainMatcherInfo, midx-uint32(len(matcherInfos))+1)...)
+				}
+				info := &matcherInfos[midx]
+				info.clientIdx = uint16(idx)
+				if ruleCurr < len(ns.OriginalRules) {
+					info.domainRuleIdx = uint16(ruleCurr)
+					rule := ns.OriginalRules[ruleCurr]
+					if ruleCurr >= len(rules) {
+						rules = append(rules, rule.Rule)
+					}
+					ruleIter++
+					if ruleIter >= int(rule.Size) {
+						ruleIter = 0
+						ruleCurr++
+					}
+				} else { // No original rule, generate one according to current domain matcher (majorly for compatibility with tests)
+					info.domainRuleIdx = uint16(len(rules))
+					rules = append(rules, matcher.String())
+				}
+			}
+			domainRules[idx] = rules
+
+			// only add to ipIndexMap if GeoIP is configured
+			if len(ns.Geoip) > 0 {
+				var matchers []*router.GeoIPMatcher
+				for _, geoip := range ns.Geoip {
+					matcher, err := geoIPMatcherContainer.Add(geoip)
+					if err != nil {
+						return nil, newError("failed to create ip matcher").Base(err).AtWarning()
+					}
+					matchers = append(matchers, matcher)
+				}
+				matcher := &MultiGeoIPMatcher{matchers: matchers}
+				server.ipIndexMap[idx] = matcher
+			}
+		}
+		server.domainRules = domainRules
+		server.domainMatcher = domainMatcher
+		server.matcherInfos = matcherInfos
+	}
+
+	if len(server.clients) == 0 {
+		server.clients = append(server.clients, NewLocalNameServer())
+		server.ipIndexMap = append(server.ipIndexMap, nil)
+	}
+
+	return server, nil
+}
+
+// Type implements common.HasType.
+func (*Server) Type() interface{} {
+	return dns.ClientType()
+}
+
+// Start implements common.Runnable.
+func (s *Server) Start() error {
+	return nil
+}
+
+// Close implements common.Closable.
+func (s *Server) Close() error {
+	return nil
+}
+
+func (s *Server) IsOwnLink(ctx context.Context) bool {
+	inbound := session.InboundFromContext(ctx)
+	return inbound != nil && inbound.Tag == s.tag
+}
+
+// Match check dns ip match geoip
+func (s *Server) Match(idx int, client Client, domain string, ips []net.IP) ([]net.IP, error) {
+	var matcher *MultiGeoIPMatcher
+	if idx < len(s.ipIndexMap) {
+		matcher = s.ipIndexMap[idx]
+	}
+	if matcher == nil {
+		return ips, nil
+	}
+
+	if !matcher.HasMatcher() {
+		newError("domain ", domain, " server has no valid matcher: ", client.Name(), " idx:", idx).AtDebug().WriteToLog()
+		return ips, nil
+	}
+
+	newIps := []net.IP{}
+	for _, ip := range ips {
+		if matcher.Match(ip) {
+			newIps = append(newIps, ip)
+		}
+	}
+	if len(newIps) == 0 {
+		return nil, errExpectedIPNonMatch
+	}
+	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", client.Name(), " idx:", idx).AtDebug().WriteToLog()
+	return newIps, nil
+}
+
+func (s *Server) queryIPTimeout(idx int, client Client, domain string, option IPOption) ([]net.IP, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*4)
+	if len(s.tag) > 0 {
+		ctx = session.ContextWithInbound(ctx, &session.Inbound{
+			Tag: s.tag,
+		})
+	}
+	ips, err := client.QueryIP(ctx, domain, option)
+	cancel()
+
+	if err != nil {
+		return ips, err
+	}
+
+	ips, err = s.Match(idx, client, domain, ips)
+	return ips, err
+}
+
+// LookupIP implements dns.Client.
+func (s *Server) LookupIP(domain string) ([]net.IP, error) {
+	return s.lookupIPInternal(domain, IPOption{
+		IPv4Enable: true,
+		IPv6Enable: true,
+	})
+}
+
+// LookupIPv4 implements dns.IPv4Lookup.
+func (s *Server) LookupIPv4(domain string) ([]net.IP, error) {
+	return s.lookupIPInternal(domain, IPOption{
+		IPv4Enable: true,
+		IPv6Enable: false,
+	})
+}
+
+// LookupIPv6 implements dns.IPv6Lookup.
+func (s *Server) LookupIPv6(domain string) ([]net.IP, error) {
+	return s.lookupIPInternal(domain, IPOption{
+		IPv4Enable: false,
+		IPv6Enable: true,
+	})
+}
+
+func (s *Server) lookupStatic(domain string, option IPOption, depth int32) []net.Address {
+	ips := s.hosts.LookupIP(domain, option)
+	if ips == nil {
+		return nil
+	}
+	if ips[0].Family().IsDomain() && depth < 5 {
+		if newIPs := s.lookupStatic(ips[0].Domain(), option, depth+1); newIPs != nil {
+			return newIPs
+		}
+	}
+	return ips
+}
+
+func toNetIP(ips []net.Address) []net.IP {
+	if len(ips) == 0 {
+		return nil
+	}
+	netips := make([]net.IP, 0, len(ips))
+	for _, ip := range ips {
+		netips = append(netips, ip.IP())
+	}
+	return netips
+}
+
+func (s *Server) lookupIPInternal(domain string, option IPOption) ([]net.IP, error) {
+	if domain == "" {
+		return nil, newError("empty domain name")
+	}
+	domain = strings.ToLower(domain)
+
+	// normalize the FQDN form query
+	if domain[len(domain)-1] == '.' {
+		domain = domain[:len(domain)-1]
+	}
+
+	ips := s.lookupStatic(domain, option, 0)
+	if ips != nil && ips[0].Family().IsIP() {
+		newError("returning ", len(ips), " IPs for domain ", domain).WriteToLog()
+		return toNetIP(ips), nil
+	}
+
+	if ips != nil && ips[0].Family().IsDomain() {
+		newdomain := ips[0].Domain()
+		newError("domain replaced: ", domain, " -> ", newdomain).WriteToLog()
+		domain = newdomain
+	}
+
+	var lastErr error
+	var matchedClient Client
+	if s.domainMatcher != nil {
+		indices := s.domainMatcher.Match(domain)
+		domainRules := []string{}
+		matchingDNS := []string{}
+		for _, idx := range indices {
+			info := s.matcherInfos[idx]
+			rule := s.domainRules[info.clientIdx][info.domainRuleIdx]
+			domainRules = append(domainRules, fmt.Sprintf("%s(DNS idx:%d)", rule, info.clientIdx))
+			matchingDNS = append(matchingDNS, s.clients[info.clientIdx].Name())
+		}
+		if len(domainRules) > 0 {
+			newError("domain ", domain, " matches following rules: ", domainRules).AtDebug().WriteToLog()
+		}
+		if len(matchingDNS) > 0 {
+			newError("domain ", domain, " uses following DNS first: ", matchingDNS).AtDebug().WriteToLog()
+		}
+		for _, idx := range indices {
+			clientIdx := int(s.matcherInfos[idx].clientIdx)
+			matchedClient = s.clients[clientIdx]
+			ips, err := s.queryIPTimeout(clientIdx, matchedClient, domain, option)
+			if len(ips) > 0 {
+				return ips, nil
+			}
+			if err == dns.ErrEmptyResponse {
+				return nil, err
+			}
+			if err != nil {
+				newError("failed to lookup ip for domain ", domain, " at server ", matchedClient.Name()).Base(err).WriteToLog()
+				lastErr = err
+			}
+		}
+	}
+
+	for idx, client := range s.clients {
+		if client == matchedClient {
+			newError("domain ", domain, " at server ", client.Name(), " idx:", idx, " already lookup failed, just ignore").AtDebug().WriteToLog()
+			continue
+		}
+
+		ips, err := s.queryIPTimeout(idx, client, domain, option)
+		if len(ips) > 0 {
+			return ips, nil
+		}
+
+		if err != nil {
+			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
+			lastErr = err
+		}
+		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
+			return nil, err
+		}
+	}
+
+	return nil, newError("returning nil for domain ", domain).Base(lastErr)
+}
+
+func init() {
+	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
+		return New(ctx, config.(*Config))
+	}))
+}
--- a/app/dns/server_test.go
+++ b/app/dns/server_test.go
@@ -6,6 +6,7 @@ import (

 	"github.com/google/go-cmp/cmp"
 	"github.com/miekg/dns"
+
 	"github.com/xtls/xray-core/app/dispatcher"
 	. "github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/app/policy"
@@ -21,7 +22,8 @@ import (
 	"github.com/xtls/xray-core/testing/servers/udp"
 )

-type staticHandler struct{}
+type staticHandler struct {
+}

 func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 	ans := new(dns.Msg)
@@ -99,8 +101,8 @@ func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 			rr, _ := dns.NewRR("localhost-b. IN A 127.0.0.4")
 			ans.Answer = append(ans.Answer, rr)

-		case q.Name == "Mijia\\ Cloud." && q.Qtype == dns.TypeA:
-			rr, _ := dns.NewRR("Mijia\\ Cloud. IN A 127.0.0.1")
+		case q.Name == "mijia\\ cloud." && q.Qtype == dns.TypeA:
+			rr, _ := dns.NewRR("mijia\\ cloud. IN A 127.0.0.1")
 			ans.Answer = append(ans.Answer, rr)
 		}
 	}
@@ -152,11 +154,7 @@ func TestUDPServerSubnet(t *testing.T) {

 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)

-	ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-		FakeEnable: false,
-	})
+	ips, err := client.LookupIP("google.com")
 	if err != nil {
 		t.Fatal("unexpected error: ", err)
 	}
@@ -211,11 +209,7 @@ func TestUDPServer(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)

 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -226,11 +220,7 @@ func TestUDPServer(t *testing.T) {
 	}

 	{
-		ips, err := client.LookupIP("facebook.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("facebook.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -241,11 +231,7 @@ func TestUDPServer(t *testing.T) {
 	}

 	{
-		_, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		_, err := client.LookupIP("notexist.google.com")
 		if err == nil {
 			t.Fatal("nil error")
 		}
@@ -255,11 +241,8 @@ func TestUDPServer(t *testing.T) {
 	}

 	{
-		ips, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		clientv6 := client.(feature_dns.IPv6Lookup)
+		ips, err := clientv6.LookupIPv6("ipv4only.google.com")
 		if err != feature_dns.ErrEmptyResponse {
 			t.Fatal("error: ", err)
 		}
@@ -271,11 +254,7 @@ func TestUDPServer(t *testing.T) {
 	dnsServer.Shutdown()

 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -352,11 +331,7 @@ func TestPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()

 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -415,12 +390,10 @@ func TestUDPServerIPv6(t *testing.T) {
 	common.Must(err)

 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
+	client6 := client.(feature_dns.IPv6Lookup)
+
 	{
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client6.LookupIPv6("ipv6.google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -483,11 +456,7 @@ func TestStaticHostDomain(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)

 	{
-		ips, err := client.LookupIP("example.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("example.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -594,11 +563,7 @@ func TestIPMatch(t *testing.T) {
 	startTime := time.Now()

 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -717,11 +682,7 @@ func TestLocalDomain(t *testing.T) {
 	startTime := time.Now()

 	{ // Will match dotless:
-		ips, err := client.LookupIP("hostname", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("hostname")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -732,11 +693,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match domain:local
-		ips, err := client.LookupIP("hostname.local", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("hostname.local")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -747,11 +704,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match static ip
-		ips, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("hostnamestatic")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -762,11 +715,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match domain replacing
-		ips, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("hostnamealias")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -777,11 +726,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match dotless:localhost, but not expectIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
-		ips, err := client.LookupIP("localhost", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("localhost")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -792,11 +737,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-a", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("localhost-a")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -807,11 +748,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-b", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("localhost-b")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -822,11 +759,7 @@ func TestLocalDomain(t *testing.T) {
 	}

 	{ // Will match dotless:
-		ips, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("Mijia Cloud")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -988,11 +921,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()

 	{ // Will match server 1,2 and server 1 returns expected ip
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -1003,11 +932,8 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}

 	{ // Will match server 1,2 and server 1 returns unexpected ip, then server 2 returns expected one
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: false,
-			FakeEnable: false,
-		})
+		clientv4 := client.(feature_dns.IPv4Lookup)
+		ips, err := clientv4.LookupIPv4("ipv6.google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -1018,11 +944,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}

 	{ // Will match server 3,1,2 and server 3 returns expected one
-		ips, err := client.LookupIP("api.google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("api.google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
@@ -1033,11 +955,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}

 	{ // Will match server 4,3,1,2 and server 4 returns expected one
-		ips, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
-			IPv4Enable: true,
-			IPv6Enable: true,
-			FakeEnable: false,
-		})
+		ips, err := client.LookupIP("v2.api.google.com")
 		if err != nil {
 			t.Fatal("unexpected error: ", err)
 		}
--- a/app/dns/nameserver_udp.go
+++ b/app/dns/nameserver_udp.go
@@ -7,10 +7,7 @@ import (
 	"sync/atomic"
 	"time"

-	"golang.org/x/net/dns/dnsmessage"
-
 	"github.com/xtls/xray-core/common"
-	"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"
@@ -20,32 +17,33 @@ import (
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet/udp"
+	"golang.org/x/net/dns/dnsmessage"
 )

-// ClassicNameServer implemented traditional UDP DNS.
 type ClassicNameServer struct {
 	sync.RWMutex
 	name      string
-	address   *net.Destination
-	ips       map[string]*record
-	requests  map[uint16]*dnsRequest
+	address   net.Destination
+	ips       map[string]record
+	requests  map[uint16]dnsRequest
 	pub       *pubsub.Service
 	udpServer *udp.Dispatcher
 	cleanup   *task.Periodic
 	reqID     uint32
+	clientIP  net.IP
 }

-// NewClassicNameServer creates udp server object for remote resolving.
-func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher) *ClassicNameServer {
+func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher, clientIP net.IP) *ClassicNameServer {
 	// default to 53 if unspecific
 	if address.Port == 0 {
 		address.Port = net.Port(53)
 	}

 	s := &ClassicNameServer{
-		address:  &address,
-		ips:      make(map[string]*record),
-		requests: make(map[uint16]*dnsRequest),
+		address:  address,
+		ips:      make(map[string]record),
+		requests: make(map[uint16]dnsRequest),
+		clientIP: clientIP,
 		pub:      pubsub.NewService(),
 		name:     strings.ToUpper(address.String()),
 	}
@@ -54,16 +52,14 @@ 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()
+	newError("DNS: created udp client inited for ", address.NetAddr()).AtInfo().WriteToLog()
 	return s
 }

-// Name implements Server.
 func (s *ClassicNameServer) Name() string {
 	return s.name
 }

-// Cleanup clears expired items from cache
 func (s *ClassicNameServer) Cleanup() error {
 	now := time.Now()
 	s.Lock()
@@ -82,7 +78,6 @@ func (s *ClassicNameServer) Cleanup() error {
 		}

 		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
 			delete(s.ips, domain)
 		} else {
 			s.ips[domain] = record
@@ -90,7 +85,7 @@ func (s *ClassicNameServer) Cleanup() error {
 	}

 	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
+		s.ips = make(map[string]record)
 	}

 	for id, req := range s.requests {
@@ -100,13 +95,12 @@ func (s *ClassicNameServer) Cleanup() error {
 	}

 	if len(s.requests) == 0 {
-		s.requests = make(map[uint16]*dnsRequest)
+		s.requests = make(map[uint16]dnsRequest)
 	}

 	return nil
 }

-// HandleResponse handles udp response packet from remote DNS server.
 func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_proto.Packet) {
 	ipRec, err := parseResponse(packet.Payload.Bytes())
 	if err != nil {
@@ -138,17 +132,15 @@ 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()
 	if len(req.domain) > 0 && (rec.A != nil || rec.AAAA != nil) {
-		s.updateIP(req.domain, &rec)
+		s.updateIP(req.domain, rec)
 	}
 }

-func (s *ClassicNameServer) updateIP(domain string, newRec *record) {
+func (s *ClassicNameServer) updateIP(domain string, newRec record) {
 	s.Lock()

-	rec, found := s.ips[domain]
-	if !found {
-		rec = &record{}
-	}
+	newError(s.name, " updating IP records for domain:", domain).AtDebug().WriteToLog()
+	rec := s.ips[domain]

 	updated := false
 	if isNewer(rec.A, newRec.A) {
@@ -161,7 +153,6 @@ func (s *ClassicNameServer) updateIP(domain string, newRec *record) {
 	}

 	if updated {
-		newError(s.name, " updating IP records for domain:", domain).AtDebug().WriteToLog()
 		s.ips[domain] = rec
 	}
 	if newRec.A != nil {
@@ -184,13 +175,13 @@ func (s *ClassicNameServer) addPendingRequest(req *dnsRequest) {

 	id := req.msg.ID
 	req.expire = time.Now().Add(time.Second * 8)
-	s.requests[id] = req
+	s.requests[id] = *req
 }

-func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
+func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, option IPOption) {
 	newError(s.name, " querying DNS for: ", domain).AtDebug().WriteToLog(session.ExportIDToError(ctx))

-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP))

 	for _, req := range reqs {
 		s.addPendingRequest(req)
@@ -199,21 +190,14 @@ func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, client
 		if inbound := session.InboundFromContext(ctx); inbound != nil {
 			udpCtx = session.ContextWithInbound(udpCtx, inbound)
 		}
-
 		udpCtx = session.ContextWithContent(udpCtx, &session.Content{
 			Protocol: "dns",
 		})
-		udpCtx = log.ContextWithAccessMessage(udpCtx, &log.AccessMessage{
-			From:   "DNS",
-			To:     s.address,
-			Status: log.AccessAccepted,
-			Reason: "",
-		})
-		s.udpServer.Dispatch(udpCtx, *s.address, b)
+		s.udpServer.Dispatch(udpCtx, s.address, b)
 	}
 }

-func (s *ClassicNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
+func (s *ClassicNameServer) findIPsForDomain(domain string, option IPOption) ([]net.IP, error) {
 	s.RLock()
 	record, found := s.ips[domain]
 	s.RUnlock()
@@ -222,48 +206,42 @@ func (s *ClassicNameServer) findIPsForDomain(domain string, option dns_feature.I
 		return nil, errRecordNotFound
 	}

-	var err4 error
-	var err6 error
 	var ips []net.Address
-	var ip6 []net.Address
-
+	var lastErr error
 	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
+		a, err := record.A.getIPs()
+		if err != nil {
+			lastErr = err
+		}
+		ips = append(ips, a...)
 	}

 	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
+		aaaa, err := record.AAAA.getIPs()
+		if err != nil {
+			lastErr = err
+		}
+		ips = append(ips, aaaa...)
 	}

 	if len(ips) > 0 {
-		return toNetIP(ips)
+		return toNetIP(ips), nil
 	}

-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
+	if lastErr != nil {
+		return nil, lastErr
 	}

 	return nil, dns_feature.ErrEmptyResponse
 }

-// QueryIP implements Server.
-func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
+func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, option IPOption) ([]net.IP, error) {
 	fqdn := Fqdn(domain)

-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
-	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
-		}
+	ips, err := s.findIPsForDomain(fqdn, option)
+	if err != errRecordNotFound {
+		newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
+		return ips, err
 	}

 	// ipv4 and ipv6 belong to different subscription groups
@@ -292,13 +270,11 @@ func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, clientIP
 		}
 		close(done)
 	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()
+	s.sendQuery(ctx, fqdn, option)

 	for {
 		ips, err := s.findIPsForDomain(fqdn, option)
 		if err != errRecordNotFound {
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
 			return ips, err
 		}

--- a/app/log/command/config.pb.go
+++ b/app/log/command/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/log/command/config.proto

 package command

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/app/log/config.pb.go
+++ b/app/log/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/log/config.proto

 package log

 import (
+	proto "github.com/golang/protobuf/proto"
 	log "github.com/xtls/xray-core/common/log"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -21,6 +22,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type LogType int32

 const (
@@ -83,7 +88,6 @@ type Config struct {
 	ErrorLogPath  string       `protobuf:"bytes,3,opt,name=error_log_path,json=errorLogPath,proto3" json:"error_log_path,omitempty"`
 	AccessLogType LogType      `protobuf:"varint,4,opt,name=access_log_type,json=accessLogType,proto3,enum=xray.app.log.LogType" json:"access_log_type,omitempty"`
 	AccessLogPath string       `protobuf:"bytes,5,opt,name=access_log_path,json=accessLogPath,proto3" json:"access_log_path,omitempty"`
-	EnableDnsLog  bool         `protobuf:"varint,6,opt,name=enable_dns_log,json=enableDnsLog,proto3" json:"enable_dns_log,omitempty"`
 }

 func (x *Config) Reset() {
@@ -129,7 +133,7 @@ func (x *Config) GetErrorLogLevel() log.Severity {
 	if x != nil {
 		return x.ErrorLogLevel
 	}
-	return log.Severity(0)
+	return log.Severity_Unknown
 }

 func (x *Config) GetErrorLogPath() string {
@@ -153,20 +157,13 @@ func (x *Config) GetAccessLogPath() string {
 	return ""
 }

-func (x *Config) GetEnableDnsLog() bool {
-	if x != nil {
-		return x.EnableDnsLog
-	}
-	return false
-}
-
 var File_app_log_config_proto protoreflect.FileDescriptor

 var file_app_log_config_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67,
 	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0c, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
 	0x2e, 0x6c, 0x6f, 0x67, 0x1a, 0x14, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6c, 0x6f, 0x67,
-	0x2f, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xbb, 0x02, 0x0a, 0x06, 0x43,
+	0x2f, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x95, 0x02, 0x0a, 0x06, 0x43,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3b, 0x0a, 0x0e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x6c,
 	0x6f, 0x67, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x15, 0x2e,
 	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x4c, 0x6f, 0x67,
@@ -184,17 +181,15 @@ var file_app_log_config_proto_rawDesc = []byte{
 	0x65, 0x73, 0x73, 0x4c, 0x6f, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x26, 0x0a, 0x0f, 0x61, 0x63,
 	0x63, 0x65, 0x73, 0x73, 0x5f, 0x6c, 0x6f, 0x67, 0x5f, 0x70, 0x61, 0x74, 0x68, 0x18, 0x05, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x4c, 0x6f, 0x67, 0x50, 0x61,
-	0x74, 0x68, 0x12, 0x24, 0x0a, 0x0e, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x64, 0x6e, 0x73,
-	0x5f, 0x6c, 0x6f, 0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x65, 0x6e, 0x61, 0x62,
-	0x6c, 0x65, 0x44, 0x6e, 0x73, 0x4c, 0x6f, 0x67, 0x2a, 0x35, 0x0a, 0x07, 0x4c, 0x6f, 0x67, 0x54,
-	0x79, 0x70, 0x65, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x10, 0x00, 0x12, 0x0b, 0x0a,
-	0x07, 0x43, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x46, 0x69,
-	0x6c, 0x65, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x03, 0x42,
-	0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
-	0x6c, 0x6f, 0x67, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
-	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
-	0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e,
-	0x41, 0x70, 0x70, 0x2e, 0x4c, 0x6f, 0x67, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x74, 0x68, 0x2a, 0x35, 0x0a, 0x07, 0x4c, 0x6f, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x08, 0x0a,
+	0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x10, 0x00, 0x12, 0x0b, 0x0a, 0x07, 0x43, 0x6f, 0x6e, 0x73, 0x6f,
+	0x6c, 0x65, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x46, 0x69, 0x6c, 0x65, 0x10, 0x02, 0x12, 0x09,
+	0x0a, 0x05, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x03, 0x42, 0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x50, 0x01, 0x5a,
+	0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73,
+	0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c,
+	0x6f, 0x67, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4c, 0x6f,
+	0x67, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/app/log/config.proto
+++ b/app/log/config.proto
@@ -22,5 +22,4 @@ message Config {

  LogType access_log_type = 4;
  string access_log_path = 5;
-  bool enable_dns_log = 6;
 }
--- a/app/log/log.go
+++ b/app/log/log.go
@@ -17,7 +17,6 @@ type Instance struct {
 	accessLogger log.Handler
 	errorLogger  log.Handler
 	active       bool
-	dns          bool
 }

 // New creates a new log.Instance based on the given config.
@@ -25,7 +24,6 @@ func New(ctx context.Context, config *Config) (*Instance, error) {
 	g := &Instance{
 		config: config,
 		active: false,
-		dns:    config.EnableDnsLog,
 	}
 	log.RegisterHandler(g)

@@ -105,10 +103,6 @@ func (g *Instance) Handle(msg log.Message) {
 		if g.accessLogger != nil {
 			g.accessLogger.Handle(msg)
 		}
-	case *log.DNSLog:
-		if g.dns && g.accessLogger != nil {
-			g.accessLogger.Handle(msg)
-		}
 	case *log.GeneralMessage:
 		if g.errorLogger != nil && msg.Severity <= g.config.ErrorLogLevel {
 			g.errorLogger.Handle(msg)
--- a/app/log/log_creator.go
+++ b/app/log/log_creator.go
@@ -11,7 +11,9 @@ type HandlerCreatorOptions struct {

 type HandlerCreator func(LogType, HandlerCreatorOptions) (log.Handler, error)

-var handlerCreatorMap = make(map[LogType]HandlerCreator)
+var (
+	handlerCreatorMap = make(map[LogType]HandlerCreator)
+)

 func RegisterHandlerCreator(logType LogType, f HandlerCreator) error {
 	if f == nil {
--- a/app/log/log_test.go
+++ b/app/log/log_test.go
@@ -5,7 +5,6 @@ import (
 	"testing"

 	"github.com/golang/mock/gomock"
-
 	"github.com/xtls/xray-core/app/log"
 	"github.com/xtls/xray-core/common"
 	clog "github.com/xtls/xray-core/common/log"
--- a/app/policy/config.pb.go
+++ b/app/policy/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/policy/config.proto

 package policy

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type Second struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/app/proxyman/command/command.pb.go
+++ b/app/proxyman/command/command.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/proxyman/command/command.proto

 package command

 import (
+	proto "github.com/golang/protobuf/proto"
 	protocol "github.com/xtls/xray-core/common/protocol"
 	serial "github.com/xtls/xray-core/common/serial"
 	core "github.com/xtls/xray-core/core"
@@ -23,6 +24,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type AddUserOperation struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/app/proxyman/config.pb.go
+++ b/app/proxyman/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/proxyman/config.proto

 package proxyman

 import (
+	proto "github.com/golang/protobuf/proto"
 	net "github.com/xtls/xray-core/common/net"
 	serial "github.com/xtls/xray-core/common/serial"
 	internet "github.com/xtls/xray-core/transport/internet"
@@ -23,6 +24,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type KnownProtocols int32

 const (
@@ -234,12 +239,9 @@ type SniffingConfig struct {
 	// Whether or not to enable content sniffing on an inbound connection.
 	Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
 	// Override target destination if sniff'ed protocol is in the given list.
-	// Supported values are "http", "tls", "fakedns".
+	// Supported values are "http", "tls".
 	DestinationOverride []string `protobuf:"bytes,2,rep,name=destination_override,json=destinationOverride,proto3" json:"destination_override,omitempty"`
 	DomainsExcluded     []string `protobuf:"bytes,3,rep,name=domains_excluded,json=domainsExcluded,proto3" json:"domains_excluded,omitempty"`
-	// Whether should only try to sniff metadata without waiting for client input.
-	// Can be used to support SMTP like protocol where server send the first message.
-	MetadataOnly bool `protobuf:"varint,4,opt,name=metadata_only,json=metadataOnly,proto3" json:"metadata_only,omitempty"`
 }

 func (x *SniffingConfig) Reset() {
@@ -295,13 +297,6 @@ func (x *SniffingConfig) GetDomainsExcluded() []string {
 	return nil
 }

-func (x *SniffingConfig) GetMetadataOnly() bool {
-	if x != nil {
-		return x.MetadataOnly
-	}
-	return false
-}
-
 type ReceiverConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -769,7 +764,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x22, 0x2c, 0x0a, 0x04, 0x54, 0x79, 0x70, 0x65, 0x12,
 	0x0a, 0x0a, 0x06, 0x41, 0x6c, 0x77, 0x61, 0x79, 0x73, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06, 0x52,
 	0x61, 0x6e, 0x64, 0x6f, 0x6d, 0x10, 0x01, 0x12, 0x0c, 0x0a, 0x08, 0x45, 0x78, 0x74, 0x65, 0x72,
-	0x6e, 0x61, 0x6c, 0x10, 0x02, 0x22, 0xad, 0x01, 0x0a, 0x0e, 0x53, 0x6e, 0x69, 0x66, 0x66, 0x69,
+	0x6e, 0x61, 0x6c, 0x10, 0x02, 0x22, 0x88, 0x01, 0x0a, 0x0e, 0x53, 0x6e, 0x69, 0x66, 0x66, 0x69,
 	0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x65, 0x6e, 0x61, 0x62,
 	0x6c, 0x65, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08, 0x52, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c,
 	0x65, 0x64, 0x12, 0x31, 0x0a, 0x14, 0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f,
@@ -778,88 +773,86 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x72, 0x72, 0x69, 0x64, 0x65, 0x12, 0x29, 0x0a, 0x10, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x73,
 	0x5f, 0x65, 0x78, 0x63, 0x6c, 0x75, 0x64, 0x65, 0x64, 0x18, 0x03, 0x20, 0x03, 0x28, 0x09, 0x52,
 	0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x73, 0x45, 0x78, 0x63, 0x6c, 0x75, 0x64, 0x65, 0x64,
-	0x12, 0x23, 0x0a, 0x0d, 0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x6f, 0x6e, 0x6c,
-	0x79, 0x18, 0x04, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74,
-	0x61, 0x4f, 0x6e, 0x6c, 0x79, 0x22, 0x90, 0x04, 0x0a, 0x0e, 0x52, 0x65, 0x63, 0x65, 0x69, 0x76,
-	0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x39, 0x0a, 0x0a, 0x70, 0x6f, 0x72, 0x74,
-	0x5f, 0x72, 0x61, 0x6e, 0x67, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x50,
-	0x6f, 0x72, 0x74, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x52, 0x09, 0x70, 0x6f, 0x72, 0x74, 0x52, 0x61,
-	0x6e, 0x67, 0x65, 0x12, 0x33, 0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x18, 0x02, 0x20,
-	0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f,
-	0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e,
-	0x52, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x12, 0x56, 0x0a, 0x13, 0x61, 0x6c, 0x6c, 0x6f,
-	0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18,
-	0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
-	0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x41, 0x6c, 0x6c, 0x6f, 0x63, 0x61,
-	0x74, 0x69, 0x6f, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x12, 0x61, 0x6c,
-	0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
-	0x12, 0x4e, 0x0a, 0x0f, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69,
-	0x6e, 0x67, 0x73, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72,
-	0x6e, 0x65, 0x74, 0x2e, 0x53, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x52, 0x0e, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73,
-	0x12, 0x40, 0x0a, 0x1c, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x5f, 0x6f, 0x72, 0x69, 0x67,
-	0x69, 0x6e, 0x61, 0x6c, 0x5f, 0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e,
-	0x18, 0x05, 0x20, 0x01, 0x28, 0x08, 0x52, 0x1a, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x4f,
-	0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x44, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69,
-	0x6f, 0x6e, 0x12, 0x4e, 0x0a, 0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x6f, 0x76, 0x65,
-	0x72, 0x72, 0x69, 0x64, 0x65, 0x18, 0x07, 0x20, 0x03, 0x28, 0x0e, 0x32, 0x21, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e,
-	0x4b, 0x6e, 0x6f, 0x77, 0x6e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x73, 0x42, 0x02,
-	0x18, 0x01, 0x52, 0x0e, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x4f, 0x76, 0x65, 0x72, 0x72, 0x69,
-	0x64, 0x65, 0x12, 0x4e, 0x0a, 0x11, 0x73, 0x6e, 0x69, 0x66, 0x66, 0x69, 0x6e, 0x67, 0x5f, 0x73,
-	0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x08, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61,
-	0x6e, 0x2e, 0x53, 0x6e, 0x69, 0x66, 0x66, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
-	0x52, 0x10, 0x73, 0x6e, 0x69, 0x66, 0x66, 0x69, 0x6e, 0x67, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e,
-	0x67, 0x73, 0x4a, 0x04, 0x08, 0x06, 0x10, 0x07, 0x22, 0xc0, 0x01, 0x0a, 0x14, 0x49, 0x6e, 0x62,
-	0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 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, 0x4d, 0x0a, 0x11, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x72, 0x5f,
-	0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20,
-	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72,
-	0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65,
-	0x52, 0x10, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x72, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e,
-	0x67, 0x73, 0x12, 0x47, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x5f, 0x73, 0x65, 0x74, 0x74,
-	0x69, 0x6e, 0x67, 0x73, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61,
-	0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e,
-	0x54, 0x79, 0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x0d, 0x70, 0x72,
-	0x6f, 0x78, 0x79, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x22, 0x10, 0x0a, 0x0e, 0x4f,
-	0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xb0, 0x02,
-	0x0a, 0x0c, 0x53, 0x65, 0x6e, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x2d,
-	0x0a, 0x03, 0x76, 0x69, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72,
-	0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50,
-	0x4f, 0x72, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x03, 0x76, 0x69, 0x61, 0x12, 0x4e, 0x0a,
-	0x0f, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72,
-	0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74,
-	0x2e, 0x53, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e, 0x73,
-	0x74, 0x72, 0x65, 0x61, 0x6d, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x4b, 0x0a,
+	0x22, 0x90, 0x04, 0x0a, 0x0e, 0x52, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x72, 0x43, 0x6f, 0x6e,
+	0x66, 0x69, 0x67, 0x12, 0x39, 0x0a, 0x0a, 0x70, 0x6f, 0x72, 0x74, 0x5f, 0x72, 0x61, 0x6e, 0x67,
+	0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63,
+	0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x50, 0x6f, 0x72, 0x74, 0x52, 0x61,
+	0x6e, 0x67, 0x65, 0x52, 0x09, 0x70, 0x6f, 0x72, 0x74, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x12, 0x33,
+	0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b,
+	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74,
+	0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x06, 0x6c, 0x69, 0x73,
+	0x74, 0x65, 0x6e, 0x12, 0x56, 0x0a, 0x13, 0x61, 0x6c, 0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f,
+	0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b,
+	0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78,
+	0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x41, 0x6c, 0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x53,
+	0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x12, 0x61, 0x6c, 0x6c, 0x6f, 0x63, 0x61, 0x74,
+	0x69, 0x6f, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x4e, 0x0a, 0x0f, 0x73,
+	0x74, 0x72, 0x65, 0x61, 0x6d, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x04,
+	0x20, 0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e,
+	0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x53,
+	0x74, 0x72, 0x65, 0x61, 0x6d, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e, 0x73, 0x74, 0x72,
+	0x65, 0x61, 0x6d, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x40, 0x0a, 0x1c, 0x72,
+	0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x5f, 0x6f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x6c, 0x5f,
+	0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x05, 0x20, 0x01, 0x28,
+	0x08, 0x52, 0x1a, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e,
+	0x61, 0x6c, 0x44, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x4e, 0x0a,
+	0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x6f, 0x76, 0x65, 0x72, 0x72, 0x69, 0x64, 0x65,
+	0x18, 0x07, 0x20, 0x03, 0x28, 0x0e, 0x32, 0x21, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
+	0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x4b, 0x6e, 0x6f, 0x77, 0x6e,
+	0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x73, 0x42, 0x02, 0x18, 0x01, 0x52, 0x0e, 0x64,
+	0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x4f, 0x76, 0x65, 0x72, 0x72, 0x69, 0x64, 0x65, 0x12, 0x4e, 0x0a,
+	0x11, 0x73, 0x6e, 0x69, 0x66, 0x66, 0x69, 0x6e, 0x67, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e,
+	0x67, 0x73, 0x18, 0x08, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
+	0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x53, 0x6e, 0x69,
+	0x66, 0x66, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x10, 0x73, 0x6e, 0x69,
+	0x66, 0x66, 0x69, 0x6e, 0x67, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x4a, 0x04, 0x08,
+	0x06, 0x10, 0x07, 0x22, 0xc0, 0x01, 0x0a, 0x14, 0x49, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x48,
+	0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 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, 0x4d,
+	0x0a, 0x11, 0x72, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65, 0x72, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69,
+	0x6e, 0x67, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79,
+	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54,
+	0x79, 0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x10, 0x72, 0x65, 0x63,
+	0x65, 0x69, 0x76, 0x65, 0x72, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x47, 0x0a,
 	0x0e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18,
-	0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x24, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61,
-	0x6e, 0x73, 0x70, 0x6f, 0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e,
-	0x50, 0x72, 0x6f, 0x78, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0d, 0x70, 0x72, 0x6f,
-	0x78, 0x79, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x54, 0x0a, 0x12, 0x6d, 0x75,
-	0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73,
-	0x18, 0x04, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
-	0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x4d, 0x75, 0x6c, 0x74, 0x69,
-	0x70, 0x6c, 0x65, 0x78, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x11, 0x6d,
-	0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73,
-	0x22, 0x50, 0x0a, 0x12, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x69, 0x6e, 0x67,
-	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65,
-	0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08, 0x52, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64,
-	0x12, 0x20, 0x0a, 0x0b, 0x63, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18,
-	0x02, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0b, 0x63, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e,
-	0x63, 0x79, 0x2a, 0x23, 0x0a, 0x0e, 0x4b, 0x6e, 0x6f, 0x77, 0x6e, 0x50, 0x72, 0x6f, 0x74, 0x6f,
-	0x63, 0x6f, 0x6c, 0x73, 0x12, 0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x00, 0x12, 0x07,
-	0x0a, 0x03, 0x54, 0x4c, 0x53, 0x10, 0x01, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e,
-	0x50, 0x01, 0x5a, 0x26, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
-	0x70, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0xaa, 0x02, 0x11, 0x58, 0x72, 0x61,
-	0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x62, 0x06,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
+	0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65, 0x64,
+	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x53, 0x65,
+	0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x22, 0x10, 0x0a, 0x0e, 0x4f, 0x75, 0x74, 0x62, 0x6f, 0x75,
+	0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xb0, 0x02, 0x0a, 0x0c, 0x53, 0x65, 0x6e,
+	0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x2d, 0x0a, 0x03, 0x76, 0x69, 0x61,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f,
+	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f, 0x6d,
+	0x61, 0x69, 0x6e, 0x52, 0x03, 0x76, 0x69, 0x61, 0x12, 0x4e, 0x0a, 0x0f, 0x73, 0x74, 0x72, 0x65,
+	0x61, 0x6d, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28,
+	0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f,
+	0x72, 0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x53, 0x74, 0x72, 0x65,
+	0x61, 0x6d, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0e, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6d,
+	0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x4b, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x78,
+	0x79, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b,
+	0x32, 0x24, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x74, 0x72, 0x61, 0x6e, 0x73, 0x70, 0x6f, 0x72,
+	0x74, 0x2e, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79,
+	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x53, 0x65, 0x74,
+	0x74, 0x69, 0x6e, 0x67, 0x73, 0x12, 0x54, 0x0a, 0x12, 0x6d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c,
+	0x65, 0x78, 0x5f, 0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x18, 0x04, 0x20, 0x01, 0x28,
+	0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f,
+	0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x69,
+	0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x11, 0x6d, 0x75, 0x6c, 0x74, 0x69, 0x70,
+	0x6c, 0x65, 0x78, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x22, 0x50, 0x0a, 0x12, 0x4d,
+	0x75, 0x6c, 0x74, 0x69, 0x70, 0x6c, 0x65, 0x78, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69,
+	0x67, 0x12, 0x18, 0x0a, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x18, 0x01, 0x20, 0x01,
+	0x28, 0x08, 0x52, 0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x20, 0x0a, 0x0b, 0x63,
+	0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0d,
+	0x52, 0x0b, 0x63, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x2a, 0x23, 0x0a,
+	0x0e, 0x4b, 0x6e, 0x6f, 0x77, 0x6e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x73, 0x12,
+	0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x00, 0x12, 0x07, 0x0a, 0x03, 0x54, 0x4c, 0x53,
+	0x10, 0x01, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61,
+	0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x50, 0x01, 0x5a, 0x26, 0x67,
+	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78,
+	0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x70, 0x72, 0x6f,
+	0x78, 0x79, 0x6d, 0x61, 0x6e, 0xaa, 0x02, 0x11, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70,
+	0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }

 var (
--- a/app/proxyman/config.proto
+++ b/app/proxyman/config.proto
@@ -54,13 +54,9 @@ message SniffingConfig {
  bool enabled = 1;

  // Override target destination if sniff'ed protocol is in the given list.
-  // Supported values are "http", "tls", "fakedns".
+  // Supported values are "http", "tls".
  repeated string destination_override = 2;
  repeated string domains_excluded = 3;
-  
-  // Whether should only try to sniff metadata without waiting for client input.
-  // Can be used to support SMTP like protocol where server send the first message.
-  bool metadata_only = 4;
 }

 message ReceiverConfig {
--- a/app/proxyman/inbound/always.go
+++ b/app/proxyman/inbound/always.go
@@ -133,7 +133,6 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 					address:         address,
 					port:            net.Port(port),
 					dispatcher:      h.mux,
-					sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
 					uplinkCounter:   uplinkCounter,
 					downlinkCounter: downlinkCounter,
 					stream:          mss,
--- a/app/proxyman/inbound/dynamic.go
+++ b/app/proxyman/inbound/dynamic.go
@@ -153,7 +153,6 @@ func (h *DynamicInboundHandler) refresh() error {
 				address:         address,
 				port:            port,
 				dispatcher:      h.mux,
-				sniffingConfig:  h.receiverConfig.GetEffectiveSniffingSettings(),
 				uplinkCounter:   uplinkCounter,
 				downlinkCounter: downlinkCounter,
 				stream:          h.streamSettings,
--- a/app/proxyman/inbound/worker.go
+++ b/app/proxyman/inbound/worker.go
@@ -6,8 +6,6 @@ import (
 	"sync/atomic"
 	"time"

-	"github.com/xtls/xray-core/transport/internet/stat"
-
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
@@ -56,7 +54,7 @@ func getTProxyType(s *internet.MemoryStreamConfig) internet.SocketConfig_TProxyM
 	return s.SocketSettings.Tproxy
 }

-func (w *tcpWorker) callback(conn stat.Connection) {
+func (w *tcpWorker) callback(conn internet.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
 	ctx = session.ContextWithID(ctx, sid)
@@ -82,7 +80,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	}

 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
-		conn = &stat.CounterConnection{
+		conn = &internet.StatCouterConnection{
 			Connection:   conn,
 			ReadCounter:  w.uplinkCounter,
 			WriteCounter: w.downlinkCounter,
@@ -100,7 +98,6 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 		content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
 		content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
 		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
-		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 	}
 	ctx = session.ContextWithContent(ctx, content)

@@ -119,7 +116,7 @@ func (w *tcpWorker) Proxy() proxy.Inbound {

 func (w *tcpWorker) Start() error {
 	ctx := context.Background()
-	hub, err := internet.ListenTCP(ctx, w.address, w.port, w.stream, func(conn stat.Connection) {
+	hub, err := internet.ListenTCP(ctx, w.address, w.port, w.stream, func(conn internet.Connection) {
 		go w.callback(conn)
 	})
 	if err != nil {
@@ -238,7 +235,6 @@ type udpWorker struct {
 	tag             string
 	stream          *internet.MemoryStreamConfig
 	dispatcher      routing.Dispatcher
-	sniffingConfig  *proxyman.SniffingConfig
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter

@@ -301,7 +297,7 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 		common.Must(w.checker.Start())

 		go func() {
-			ctx := w.ctx
+			ctx := context.Background()
 			sid := session.NewID()
 			ctx = session.ContextWithID(ctx, sid)

@@ -315,13 +311,6 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 				Gateway: net.UDPDestination(w.address, w.port),
 				Tag:     w.tag,
 			})
-			content := new(session.Content)
-			if w.sniffingConfig != nil {
-				content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
-				content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
-				content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
-			}
-			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))
 			}
@@ -438,13 +427,13 @@ type dsWorker struct {
 	ctx context.Context
 }

-func (w *dsWorker) callback(conn stat.Connection) {
+func (w *dsWorker) callback(conn internet.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
 	ctx = session.ContextWithID(ctx, sid)

 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
-		conn = &stat.CounterConnection{
+		conn = &internet.StatCouterConnection{
 			Connection:   conn,
 			ReadCounter:  w.uplinkCounter,
 			WriteCounter: w.downlinkCounter,
@@ -462,7 +451,6 @@ func (w *dsWorker) callback(conn stat.Connection) {
 		content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
 		content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
 		content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
-		content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 	}
 	ctx = session.ContextWithContent(ctx, content)

@@ -482,10 +470,9 @@ func (w *dsWorker) Proxy() proxy.Inbound {
 func (w *dsWorker) Port() net.Port {
 	return net.Port(0)
 }
-
 func (w *dsWorker) Start() error {
 	ctx := context.Background()
-	hub, err := internet.ListenUnix(ctx, w.address, w.stream, func(conn stat.Connection) {
+	hub, err := internet.ListenUnix(ctx, w.address, w.stream, func(conn internet.Connection) {
 		go w.callback(conn)
 	})
 	if err != nil {
--- a/app/proxyman/outbound/handler.go
+++ b/app/proxyman/outbound/handler.go
@@ -3,8 +3,6 @@ package outbound
 import (
 	"context"

-	"github.com/xtls/xray-core/transport/internet/stat"
-
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/mux"
@@ -160,7 +158,7 @@ func (h *Handler) Address() net.Address {
 }

 // Dial implements internet.Dialer.
-func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connection, error) {
+func (h *Handler) Dial(ctx context.Context, dest net.Destination) (internet.Connection, error) {
 	if h.senderSettings != nil {
 		if h.senderSettings.ProxySettings.HasTag() {
 			tag := h.senderSettings.ProxySettings.Tag
@@ -203,9 +201,9 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 	return h.getStatCouterConnection(conn), err
 }

-func (h *Handler) getStatCouterConnection(conn stat.Connection) stat.Connection {
+func (h *Handler) getStatCouterConnection(conn internet.Connection) internet.Connection {
 	if h.uplinkCounter != nil || h.downlinkCounter != nil {
-		return &stat.CounterConnection{
+		return &internet.StatCouterConnection{
 			Connection:   conn,
 			ReadCounter:  h.downlinkCounter,
 			WriteCounter: h.uplinkCounter,
--- a/app/proxyman/outbound/handler_test.go
+++ b/app/proxyman/outbound/handler_test.go
@@ -4,8 +4,6 @@ import (
 	"context"
 	"testing"

-	"github.com/xtls/xray-core/transport/internet/stat"
-
 	"github.com/xtls/xray-core/app/policy"
 	. "github.com/xtls/xray-core/app/proxyman/outbound"
 	"github.com/xtls/xray-core/app/stats"
@@ -14,6 +12,7 @@ import (
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/proxy/freedom"
+	"github.com/xtls/xray-core/transport/internet"
 )

 func TestInterfaces(t *testing.T) {
@@ -45,9 +44,9 @@ func TestOutboundWithoutStatCounter(t *testing.T) {
 		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
 	})
 	conn, _ := h.(*Handler).Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), 13146))
-	_, ok := conn.(*stat.CounterConnection)
+	_, ok := conn.(*internet.StatCouterConnection)
 	if ok {
-		t.Errorf("Expected conn to not be CounterConnection")
+		t.Errorf("Expected conn to not be StatCouterConnection")
 	}
 }

@@ -74,8 +73,8 @@ func TestOutboundWithStatCounter(t *testing.T) {
 		ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
 	})
 	conn, _ := h.(*Handler).Dial(ctx, net.TCPDestination(net.DomainAddress("localhost"), 13146))
-	_, ok := conn.(*stat.CounterConnection)
+	_, ok := conn.(*internet.StatCouterConnection)
 	if !ok {
-		t.Errorf("Expected conn to be CounterConnection")
+		t.Errorf("Expected conn to be StatCouterConnection")
 	}
 }
--- a/app/reverse/bridge.go
+++ b/app/reverse/bridge.go
@@ -5,7 +5,6 @@ import (
 	"time"

 	"github.com/golang/protobuf/proto"
-
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
--- a/app/reverse/config.pb.go
+++ b/app/reverse/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/reverse/config.proto

 package reverse

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type Control_State int32

 const (
--- a/app/reverse/portal.go
+++ b/app/reverse/portal.go
@@ -6,7 +6,6 @@ import (
 	"time"

 	"github.com/golang/protobuf/proto"
-
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/mux"
--- a/app/router/balancing.go
+++ b/app/router/balancing.go
@@ -9,7 +9,8 @@ type BalancingStrategy interface {
 	PickOutbound([]string) string
 }

-type RandomStrategy struct{}
+type RandomStrategy struct {
+}

 func (s *RandomStrategy) PickOutbound(tags []string) string {
 	n := len(tags)
--- a/app/router/command/command.pb.go
+++ b/app/router/command/command.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/router/command/command.proto

 package command

 import (
+	proto "github.com/golang/protobuf/proto"
 	net "github.com/xtls/xray-core/common/net"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -21,6 +22,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 // RoutingContext is the context with information relative to routing process.
 // It conforms to the structure of xray.features.routing.Context and
 // xray.features.routing.Route.
@@ -86,7 +91,7 @@ func (x *RoutingContext) GetNetwork() net.Network {
 	if x != nil {
 		return x.Network
 	}
-	return net.Network(0)
+	return net.Network_Unknown
 }

 func (x *RoutingContext) GetSourceIPs() [][]byte {
--- a/app/router/command/command_test.go
+++ b/app/router/command/command_test.go
@@ -8,9 +8,6 @@ import (
 	"github.com/golang/mock/gomock"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/test/bufconn"
-
 	"github.com/xtls/xray-core/app/router"
 	. "github.com/xtls/xray-core/app/router/command"
 	"github.com/xtls/xray-core/app/stats"
@@ -18,6 +15,8 @@ import (
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/testing/mocks"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/test/bufconn"
 )

 func TestServiceSubscribeRoutingStats(t *testing.T) {
@@ -45,6 +44,7 @@ func TestServiceSubscribeRoutingStats(t *testing.T) {
 		{SourceIPs: [][]byte{{127, 0, 0, 1}}, Attributes: map[string]string{"attr": "value"}, OutboundTag: "out"},
 	}
 	errCh := make(chan error)
+	nextPub := make(chan struct{})

 	// Server goroutine
 	go func() {
@@ -76,6 +76,13 @@ func TestServiceSubscribeRoutingStats(t *testing.T) {
 		if err := publishTestCases(); err != nil {
 			errCh <- err
 		}
+
+		// Wait for next round of publishing
+		<-nextPub
+
+		if err := publishTestCases(); err != nil {
+			errCh <- err
+		}
 	}()

 	// Client goroutine
@@ -137,92 +144,6 @@ func TestServiceSubscribeRoutingStats(t *testing.T) {
 			return nil
 		}

-		if err := testRetrievingAllFields(); err != nil {
-			errCh <- err
-		}
-		errCh <- nil // Client passed all tests successfully
-	}()
-
-	// Wait for goroutines to complete
-	select {
-	case <-time.After(2 * time.Second):
-		t.Fatal("Test timeout after 2s")
-	case err := <-errCh:
-		if err != nil {
-			t.Fatal(err)
-		}
-	}
-}
-
-func TestServiceSubscribeSubsetOfFields(t *testing.T) {
-	c := stats.NewChannel(&stats.ChannelConfig{
-		SubscriberLimit: 1,
-		BufferSize:      0,
-		Blocking:        true,
-	})
-	common.Must(c.Start())
-	defer c.Close()
-
-	lis := bufconn.Listen(1024 * 1024)
-	bufDialer := func(context.Context, string) (net.Conn, error) {
-		return lis.Dial()
-	}
-
-	testCases := []*RoutingContext{
-		{InboundTag: "in", OutboundTag: "out"},
-		{TargetIPs: [][]byte{{1, 2, 3, 4}}, TargetPort: 8080, OutboundTag: "out"},
-		{TargetDomain: "example.com", TargetPort: 443, OutboundTag: "out"},
-		{SourcePort: 9999, TargetPort: 9999, OutboundTag: "out"},
-		{Network: net.Network_UDP, OutboundGroupTags: []string{"outergroup", "innergroup"}, OutboundTag: "out"},
-		{Protocol: "bittorrent", OutboundTag: "blocked"},
-		{User: "example@example.com", OutboundTag: "out"},
-		{SourceIPs: [][]byte{{127, 0, 0, 1}}, Attributes: map[string]string{"attr": "value"}, OutboundTag: "out"},
-	}
-	errCh := make(chan error)
-
-	// Server goroutine
-	go func() {
-		server := grpc.NewServer()
-		RegisterRoutingServiceServer(server, NewRoutingServer(nil, c))
-		errCh <- server.Serve(lis)
-	}()
-
-	// Publisher goroutine
-	go func() {
-		publishTestCases := func() error {
-			ctx, cancel := context.WithTimeout(context.Background(), time.Second)
-			defer cancel()
-			for { // Wait until there's one subscriber in routing stats channel
-				if len(c.Subscribers()) > 0 {
-					break
-				}
-				if ctx.Err() != nil {
-					return ctx.Err()
-				}
-			}
-			for _, tc := range testCases {
-				c.Publish(context.Background(), AsRoutingRoute(tc))
-				time.Sleep(time.Millisecond)
-			}
-			return nil
-		}
-
-		if err := publishTestCases(); err != nil {
-			errCh <- err
-		}
-	}()
-
-	// Client goroutine
-	go func() {
-		defer lis.Close()
-		conn, err := grpc.DialContext(context.Background(), "bufnet", grpc.WithContextDialer(bufDialer), grpc.WithInsecure())
-		if err != nil {
-			errCh <- err
-			return
-		}
-		defer conn.Close()
-		client := NewRoutingServiceClient(conn)
-
 		// Test retrieving only a subset of fields
 		testRetrievingSubsetOfFields := func() error {
 			streamCtx, streamClose := context.WithCancel(context.Background())
@@ -234,6 +155,9 @@ func TestServiceSubscribeSubsetOfFields(t *testing.T) {
 				return err
 			}

+			// Send nextPub signal to start next round of publishing
+			close(nextPub)
+
 			for _, tc := range testCases {
 				msg, err := stream.Recv()
 				if err != nil {
@@ -255,6 +179,10 @@ func TestServiceSubscribeSubsetOfFields(t *testing.T) {

 			return nil
 		}
+
+		if err := testRetrievingAllFields(); err != nil {
+			errCh <- err
+		}
 		if err := testRetrievingSubsetOfFields(); err != nil {
 			errCh <- err
 		}
--- a/app/router/command/config.go
+++ b/app/router/command/config.go
@@ -28,13 +28,6 @@ func (c routingContext) GetTargetPort() net.Port {
 	return net.Port(c.RoutingContext.GetTargetPort())
 }

-// GetSkipDNSResolve is a mock implementation here to match the interface,
-// SkipDNSResolve is set from dns module, no use if coming from a protobuf object?
-// TODO: please confirm @Vigilans
-func (c routingContext) GetSkipDNSResolve() bool {
-	return false
-}
-
 // AsRoutingContext converts a protobuf RoutingContext into an implementation of routing.Context.
 func AsRoutingContext(r *RoutingContext) routing.Context {
 	return routingContext{r}
--- a/app/router/condition.go
+++ b/app/router/condition.go
@@ -66,24 +66,6 @@ type DomainMatcher struct {
 	matchers strmatcher.IndexMatcher
 }

-func NewMphMatcherGroup(domains []*Domain) (*DomainMatcher, error) {
-	g := strmatcher.NewMphMatcherGroup()
-	for _, d := range domains {
-		matcherType, f := matcherTypeMap[d.Type]
-		if !f {
-			return nil, newError("unsupported domain type", d.Type)
-		}
-		_, err := g.AddPattern(d.Value, matcherType)
-		if err != nil {
-			return nil, err
-		}
-	}
-	g.Build()
-	return &DomainMatcher{
-		matchers: g,
-	}, nil
-}
-
 func NewDomainMatcher(domains []*Domain) (*DomainMatcher, error) {
 	g := new(strmatcher.MatcherGroup)
 	for _, d := range domains {
@@ -100,7 +82,7 @@ func NewDomainMatcher(domains []*Domain) (*DomainMatcher, error) {
 }

 func (m *DomainMatcher) ApplyDomain(domain string) bool {
-	return len(m.matchers.Match(strings.ToLower(domain))) > 0
+	return len(m.matchers.Match(domain)) > 0
 }

 // Apply implements Condition.
@@ -109,7 +91,7 @@ func (m *DomainMatcher) Apply(ctx routing.Context) bool {
 	if len(domain) == 0 {
 		return false
 	}
-	return m.ApplyDomain(domain)
+	return m.ApplyDomain(strings.ToLower(domain))
 }

 type MultiGeoIPMatcher struct {
--- a/app/router/condition_geoip.go
+++ b/app/router/condition_geoip.go
@@ -186,4 +186,6 @@ func (c *GeoIPMatcherContainer) Add(geoip *GeoIP) (*GeoIPMatcher, error) {
 	return m, nil
 }

-var globalGeoIPContainer GeoIPMatcherContainer
+var (
+	globalGeoIPContainer GeoIPMatcherContainer
+)
--- a/app/router/condition_geoip_test.go
+++ b/app/router/condition_geoip_test.go
@@ -6,7 +6,6 @@ import (
 	"testing"

 	"github.com/golang/protobuf/proto"
-
 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
@@ -89,8 +88,7 @@ func TestGeoIPMatcher(t *testing.T) {
 		{
 			Input:  "192.0.1.0",
 			Output: false,
-		},
-		{
+		}, {
 			Input:  "0.1.0.0",
 			Output: true,
 		},
--- a/app/router/condition_test.go
+++ b/app/router/condition_test.go
@@ -359,9 +359,6 @@ func TestChinaSites(t *testing.T) {
 	matcher, err := NewDomainMatcher(domains)
 	common.Must(err)

-	acMatcher, err := NewMphMatcherGroup(domains)
-	common.Must(err)
-
 	type TestCase struct {
 		Domain string
 		Output bool
@@ -390,96 +387,9 @@ func TestChinaSites(t *testing.T) {
 	}

 	for _, testCase := range testCases {
-		r1 := matcher.ApplyDomain(testCase.Domain)
-		r2 := acMatcher.ApplyDomain(testCase.Domain)
-		if r1 != testCase.Output {
-			t.Error("DomainMatcher expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r1)
-		} else if r2 != testCase.Output {
-			t.Error("ACDomainMatcher expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r2)
-		}
-	}
-}
-
-func BenchmarkMphDomainMatcher(b *testing.B) {
-	domains, err := loadGeoSite("CN")
-	common.Must(err)
-
-	matcher, err := NewMphMatcherGroup(domains)
-	common.Must(err)
-
-	type TestCase struct {
-		Domain string
-		Output bool
-	}
-	testCases := []TestCase{
-		{
-			Domain: "163.com",
-			Output: true,
-		},
-		{
-			Domain: "163.com",
-			Output: true,
-		},
-		{
-			Domain: "164.com",
-			Output: false,
-		},
-		{
-			Domain: "164.com",
-			Output: false,
-		},
-	}
-
-	for i := 0; i < 1024; i++ {
-		testCases = append(testCases, TestCase{Domain: strconv.Itoa(i) + ".not-exists.com", Output: false})
-	}
-
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		for _, testCase := range testCases {
-			_ = matcher.ApplyDomain(testCase.Domain)
-		}
-	}
-}
-
-func BenchmarkDomainMatcher(b *testing.B) {
-	domains, err := loadGeoSite("CN")
-	common.Must(err)
-
-	matcher, err := NewDomainMatcher(domains)
-	common.Must(err)
-
-	type TestCase struct {
-		Domain string
-		Output bool
-	}
-	testCases := []TestCase{
-		{
-			Domain: "163.com",
-			Output: true,
-		},
-		{
-			Domain: "163.com",
-			Output: true,
-		},
-		{
-			Domain: "164.com",
-			Output: false,
-		},
-		{
-			Domain: "164.com",
-			Output: false,
-		},
-	}
-
-	for i := 0; i < 1024; i++ {
-		testCases = append(testCases, TestCase{Domain: strconv.Itoa(i) + ".not-exists.com", Output: false})
-	}
-
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		for _, testCase := range testCases {
-			_ = matcher.ApplyDomain(testCase.Domain)
+		r := matcher.ApplyDomain(testCase.Domain)
+		if r != testCase.Output {
+			t.Error("expected output ", testCase.Output, " for domain ", testCase.Domain, " but got ", r)
 		}
 	}
 }
--- a/app/router/config.go
+++ b/app/router/config.go
@@ -67,23 +67,11 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	conds := NewConditionChan()

 	if len(rr.Domain) > 0 {
-		switch rr.DomainMatcher {
-		case "linear":
-			matcher, err := NewDomainMatcher(rr.Domain)
-			if err != nil {
-				return nil, newError("failed to build domain condition").Base(err)
-			}
-			conds.Add(matcher)
-		case "mph", "hybrid":
-			fallthrough
-		default:
-			matcher, err := NewMphMatcherGroup(rr.Domain)
-			if err != nil {
-				return nil, newError("failed to build domain condition with MphDomainMatcher").Base(err)
-			}
-			newError("MphDomainMatcher is enabled for ", len(rr.Domain), " domain rule(s)").AtDebug().WriteToLog()
-			conds.Add(matcher)
+		matcher, err := NewDomainMatcher(rr.Domain)
+		if err != nil {
+			return nil, newError("failed to build domain condition").Base(err)
 		}
+		conds.Add(matcher)
 	}

 	if len(rr.UserEmail) > 0 {
--- a/app/router/config.pb.go
+++ b/app/router/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/router/config.proto

 package router

 import (
+	proto "github.com/golang/protobuf/proto"
 	net "github.com/xtls/xray-core/common/net"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -21,6 +22,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 // Type of domain value.
 type Domain_Type int32

@@ -510,7 +515,6 @@ type RoutingRule struct {
 	InboundTag     []string      `protobuf:"bytes,8,rep,name=inbound_tag,json=inboundTag,proto3" json:"inbound_tag,omitempty"`
 	Protocol       []string      `protobuf:"bytes,9,rep,name=protocol,proto3" json:"protocol,omitempty"`
 	Attributes     string        `protobuf:"bytes,15,opt,name=attributes,proto3" json:"attributes,omitempty"`
-	DomainMatcher  string        `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
 }

 func (x *RoutingRule) Reset() {
@@ -668,13 +672,6 @@ func (x *RoutingRule) GetAttributes() string {
 	return ""
 }

-func (x *RoutingRule) GetDomainMatcher() string {
-	if x != nil {
-		return x.DomainMatcher
-	}
-	return ""
-}
-
 type isRoutingRule_TargetTag interface {
 	isRoutingRule_TargetTag()
 }
@@ -949,7 +946,7 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x74, 0x12, 0x2e, 0x0a, 0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b,
 	0x32, 0x18, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74,
 	0x65, 0x72, 0x2e, 0x47, 0x65, 0x6f, 0x53, 0x69, 0x74, 0x65, 0x52, 0x05, 0x65, 0x6e, 0x74, 0x72,
-	0x79, 0x22, 0xb5, 0x06, 0x0a, 0x0b, 0x52, 0x6f, 0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c,
+	0x79, 0x22, 0x8e, 0x06, 0x0a, 0x0b, 0x52, 0x6f, 0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c,
 	0x65, 0x12, 0x12, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00,
 	0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x25, 0x0a, 0x0d, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69,
 	0x6e, 0x67, 0x5f, 0x74, 0x61, 0x67, 0x18, 0x0c, 0x20, 0x01, 0x28, 0x09, 0x48, 0x00, 0x52, 0x0c,
@@ -997,38 +994,36 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x6f, 0x63, 0x6f, 0x6c, 0x18, 0x09, 0x20, 0x03, 0x28, 0x09, 0x52, 0x08, 0x70, 0x72, 0x6f, 0x74,
 	0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x1e, 0x0a, 0x0a, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74,
 	0x65, 0x73, 0x18, 0x0f, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62,
-	0x75, 0x74, 0x65, 0x73, 0x12, 0x25, 0x0a, 0x0e, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x6d,
-	0x61, 0x74, 0x63, 0x68, 0x65, 0x72, 0x18, 0x11, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0d, 0x64, 0x6f,
-	0x6d, 0x61, 0x69, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x65, 0x72, 0x42, 0x0c, 0x0a, 0x0a, 0x74,
-	0x61, 0x72, 0x67, 0x65, 0x74, 0x5f, 0x74, 0x61, 0x67, 0x22, 0x4e, 0x0a, 0x0d, 0x42, 0x61, 0x6c,
-	0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61,
-	0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x2b, 0x0a, 0x11,
-	0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x73, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f,
-	0x72, 0x18, 0x02, 0x20, 0x03, 0x28, 0x09, 0x52, 0x10, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e,
-	0x64, 0x53, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x22, 0x9b, 0x02, 0x0a, 0x06, 0x43, 0x6f,
-	0x6e, 0x66, 0x69, 0x67, 0x12, 0x4f, 0x0a, 0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x73,
-	0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x26, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e,
-	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
-	0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x0e, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72,
-	0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x30, 0x0a, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x02, 0x20,
-	0x03, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72,
-	0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c,
-	0x65, 0x52, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x12, 0x45, 0x0a, 0x0e, 0x62, 0x61, 0x6c, 0x61, 0x6e,
-	0x63, 0x69, 0x6e, 0x67, 0x5f, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32,
-	0x1e, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65,
-	0x72, 0x2e, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52,
-	0x0d, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x22, 0x47,
-	0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
-	0x12, 0x08, 0x0a, 0x04, 0x41, 0x73, 0x49, 0x73, 0x10, 0x00, 0x12, 0x09, 0x0a, 0x05, 0x55, 0x73,
-	0x65, 0x49, 0x70, 0x10, 0x01, 0x12, 0x10, 0x0a, 0x0c, 0x49, 0x70, 0x49, 0x66, 0x4e, 0x6f, 0x6e,
-	0x4d, 0x61, 0x74, 0x63, 0x68, 0x10, 0x02, 0x12, 0x0e, 0x0a, 0x0a, 0x49, 0x70, 0x4f, 0x6e, 0x44,
-	0x65, 0x6d, 0x61, 0x6e, 0x64, 0x10, 0x03, 0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
-	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x50, 0x01,
-	0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
-	0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f,
-	0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0xaa, 0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70,
-	0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x75, 0x74, 0x65, 0x73, 0x42, 0x0c, 0x0a, 0x0a, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x5f, 0x74,
+	0x61, 0x67, 0x22, 0x4e, 0x0a, 0x0d, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x52,
+	0x75, 0x6c, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
+	0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x2b, 0x0a, 0x11, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e,
+	0x64, 0x5f, 0x73, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x6f, 0x72, 0x18, 0x02, 0x20, 0x03, 0x28, 0x09,
+	0x52, 0x10, 0x6f, 0x75, 0x74, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x53, 0x65, 0x6c, 0x65, 0x63, 0x74,
+	0x6f, 0x72, 0x22, 0x9b, 0x02, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x4f, 0x0a,
+	0x0f, 0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x26, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
+	0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2e,
+	0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x52, 0x0e,
+	0x64, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x30,
+	0x0a, 0x04, 0x72, 0x75, 0x6c, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x78,
+	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x52,
+	0x6f, 0x75, 0x74, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x04, 0x72, 0x75, 0x6c, 0x65,
+	0x12, 0x45, 0x0a, 0x0e, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x5f, 0x72, 0x75,
+	0x6c, 0x65, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1e, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
+	0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x42, 0x61, 0x6c, 0x61, 0x6e,
+	0x63, 0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x52, 0x0d, 0x62, 0x61, 0x6c, 0x61, 0x6e, 0x63,
+	0x69, 0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x22, 0x47, 0x0a, 0x0e, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x53, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x12, 0x08, 0x0a, 0x04, 0x41, 0x73, 0x49,
+	0x73, 0x10, 0x00, 0x12, 0x09, 0x0a, 0x05, 0x55, 0x73, 0x65, 0x49, 0x70, 0x10, 0x01, 0x12, 0x10,
+	0x0a, 0x0c, 0x49, 0x70, 0x49, 0x66, 0x4e, 0x6f, 0x6e, 0x4d, 0x61, 0x74, 0x63, 0x68, 0x10, 0x02,
+	0x12, 0x0e, 0x0a, 0x0a, 0x49, 0x70, 0x4f, 0x6e, 0x44, 0x65, 0x6d, 0x61, 0x6e, 0x64, 0x10, 0x03,
+	0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
+	0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x50, 0x01, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d,
+	0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0xaa,
+	0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x52, 0x6f, 0x75, 0x74, 0x65,
+	0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/app/router/config.proto
+++ b/app/router/config.proto
@@ -119,8 +119,6 @@ message RoutingRule {
  repeated string protocol = 9;

  string attributes = 15;
-
-  string domain_matcher = 17;
 }

 message BalancingRule {
--- a/app/router/router.go
+++ b/app/router/router.go
@@ -80,12 +80,7 @@ func (r *Router) PickRoute(ctx routing.Context) (routing.Route, error) {
 }

 func (r *Router) pickRouteInternal(ctx routing.Context) (*Rule, routing.Context, error) {
-	// SkipDNSResolve is set from DNS module.
-	// the DOH remote server maybe a domain name,
-	// this prevents cycle resolving dead loop
-	skipDNSResolve := ctx.GetSkipDNSResolve()
-
-	if r.domainStrategy == Config_IpOnDemand && !skipDNSResolve {
+	if r.domainStrategy == Config_IpOnDemand {
 		ctx = routing_dns.ContextWithDNSClient(ctx, r.dns)
 	}

@@ -95,7 +90,7 @@ func (r *Router) pickRouteInternal(ctx routing.Context) (*Rule, routing.Context,
 		}
 	}

-	if r.domainStrategy != Config_IpIfNonMatch || len(ctx.GetTargetDomain()) == 0 || skipDNSResolve {
+	if r.domainStrategy != Config_IpIfNonMatch || len(ctx.GetTargetDomain()) == 0 {
 		return nil, ctx, common.ErrNoClue
 	}

--- a/app/router/router_test.go
+++ b/app/router/router_test.go
@@ -4,10 +4,7 @@ import (
 	"context"
 	"testing"

-	"github.com/xtls/xray-core/features/dns"
-
 	"github.com/golang/mock/gomock"
-
 	. "github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
@@ -118,11 +115,7 @@ func TestIPOnDemand(t *testing.T) {
 	defer mockCtl.Finish()

 	mockDNS := mocks.NewDNSClient(mockCtl)
-	mockDNS.EXPECT().LookupIP(gomock.Eq("example.com"), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-		FakeEnable: false,
-	}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
+	mockDNS.EXPECT().LookupIP(gomock.Eq("example.com")).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()

 	r := new(Router)
 	common.Must(r.Init(config, mockDNS, nil))
@@ -157,11 +150,7 @@ func TestIPIfNonMatchDomain(t *testing.T) {
 	defer mockCtl.Finish()

 	mockDNS := mocks.NewDNSClient(mockCtl)
-	mockDNS.EXPECT().LookupIP(gomock.Eq("example.com"), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-		FakeEnable: false,
-	}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()
+	mockDNS.EXPECT().LookupIP(gomock.Eq("example.com")).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()

 	r := new(Router)
 	common.Must(r.Init(config, mockDNS, nil))
--- a/app/stats/command/command.pb.go
+++ b/app/stats/command/command.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/stats/command/command.proto

 package command

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type GetStatsRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/app/stats/config.pb.go
+++ b/app/stats/config.pb.go
@@ -1,12 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.27.1
-// 	protoc        v3.18.0
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.14.0
 // source: app/stats/config.proto

 package stats

 import (
+	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -20,6 +21,10 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )

+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
--- a/common/buf/buffer.go
+++ b/common/buf/buffer.go
@@ -24,48 +24,18 @@ type Buffer struct {
 	UDP   *net.Destination
 }

-// New creates a Buffer with 0 length and 8K capacity.
+// New creates a Buffer with 0 length and 2K capacity.
 func New() *Buffer {
-	buf := pool.Get().([]byte)
-	if cap(buf) >= Size {
-		buf = buf[:Size]
-	} else {
-		buf = make([]byte, Size)
-	}
-
 	return &Buffer{
-		v: buf,
-	}
-}
-
-func NewExisted(b []byte) *Buffer {
-	if cap(b) < Size {
-		panic("Invalid buffer")
-	}
-
-	oLen := len(b)
-	if oLen < Size {
-		b = b[:Size]
-	}
-
-	return &Buffer{
-		v:   b,
-		end: int32(oLen),
+		v: pool.Get().([]byte),
 	}
 }

 // StackNew creates a new Buffer object on stack.
 // This method is for buffers that is released in the same function.
 func StackNew() Buffer {
-	buf := pool.Get().([]byte)
-	if cap(buf) >= Size {
-		buf = buf[:Size]
-	} else {
-		buf = make([]byte, Size)
-	}
-
 	return Buffer{
-		v: buf,
+		v: pool.Get().([]byte),
 	}
 }

@@ -78,10 +48,7 @@ func (b *Buffer) Release() {
 	p := b.v
 	b.v = nil
 	b.Clear()
-
-	if cap(p) == Size {
-		pool.Put(p)
-	}
+	pool.Put(p)
 	b.UDP = nil
 }

--- a/common/buf/buffer_test.go
+++ b/common/buf/buffer_test.go
@@ -6,7 +6,6 @@ import (
 	"testing"

 	"github.com/google/go-cmp/cmp"
-
 	"github.com/xtls/xray-core/common"
 	. "github.com/xtls/xray-core/common/buf"
 )
@@ -78,7 +77,6 @@ func TestBufferByte(t *testing.T) {
 		buffer.Release()
 	}
 }
-
 func TestBufferResize(t *testing.T) {
 	buffer := New()
 	defer buffer.Release()
--- a/common/buf/io.go
+++ b/common/buf/io.go
@@ -6,9 +6,6 @@ import (
 	"os"
 	"syscall"
 	"time"
-
-	"github.com/xtls/xray-core/features/stats"
-	"github.com/xtls/xray-core/transport/internet/stat"
 )

 // Reader extends io.Reader with MultiBuffer.
@@ -32,17 +29,9 @@ type Writer interface {
 }

 // WriteAllBytes ensures all bytes are written into the given writer.
-func WriteAllBytes(writer io.Writer, payload []byte, c stats.Counter) error {
-	wc := 0
-	defer func() {
-		if c != nil {
-			c.Add(int64(wc))
-		}
-	}()
-
+func WriteAllBytes(writer io.Writer, payload []byte) error {
 	for len(payload) > 0 {
 		n, err := writer.Write(payload)
-		wc += n
 		if err != nil {
 			return err
 		}
@@ -76,13 +65,7 @@ func NewReader(reader io.Reader) Reader {
 			if err != nil {
 				newError("failed to get sysconn").Base(err).WriteToLog()
 			} else {
-				var counter stats.Counter
-
-				if statConn, ok := reader.(*stat.CounterConnection); ok {
-					reader = statConn.Connection
-					counter = statConn.ReadCounter
-				}
-				return NewReadVReader(reader, rawConn, counter)
+				return NewReadVReader(reader, rawConn)
 			}
 		}
 	}
@@ -121,24 +104,13 @@ func NewWriter(writer io.Writer) Writer {
 		return mw
 	}

-	iConn := writer
-	if statConn, ok := writer.(*stat.CounterConnection); ok {
-		iConn = statConn.Connection
-	}
-
-	if isPacketWriter(iConn) {
+	if isPacketWriter(writer) {
 		return &SequentialWriter{
 			Writer: writer,
 		}
 	}

-	var counter stats.Counter
-
-	if statConn, ok := writer.(*stat.CounterConnection); ok {
-		counter = statConn.WriteCounter
-	}
 	return &BufferToBytesWriter{
-		Writer:  iConn,
-		counter: counter,
+		Writer: writer,
 	}
 }
--- a/common/buf/multi_buffer_test.go
+++ b/common/buf/multi_buffer_test.go
@@ -4,11 +4,11 @@ import (
 	"bytes"
 	"crypto/rand"
 	"io"
+	"io/ioutil"
 	"os"
 	"testing"

 	"github.com/google/go-cmp/cmp"
-
 	"github.com/xtls/xray-core/common"
 	. "github.com/xtls/xray-core/common/buf"
 )
@@ -119,7 +119,7 @@ func TestMultiBufferReadAllToByte(t *testing.T) {
 		common.Must(err)
 		f.Close()

-		cnt, err := os.ReadFile(dat)
+		cnt, err := ioutil.ReadFile(dat)
 		common.Must(err)

 		if d := cmp.Diff(buf2, cnt); d != "" {
--- a/common/buf/readv_posix.go
+++ b/common/buf/readv_posix.go
@@ -1,5 +1,6 @@
-//go:build !windows && !wasm && !illumos
-// +build !windows,!wasm,!illumos
+// +build !windows
+// +build !wasm
+// +build !illumos

 package buf

--- a/common/buf/readv_reader.go
+++ b/common/buf/readv_reader.go
@@ -1,14 +1,12 @@
-//go:build !wasm
 // +build !wasm

 package buf

 import (
 	"io"
+	"runtime"
 	"syscall"

-	"github.com/xtls/xray-core/features/stats"
-
 	"github.com/xtls/xray-core/common/platform"
 )

@@ -56,19 +54,17 @@ type ReadVReader struct {
 	rawConn syscall.RawConn
 	mr      multiReader
 	alloc   allocStrategy
-	counter stats.Counter
 }

 // NewReadVReader creates a new ReadVReader.
-func NewReadVReader(reader io.Reader, rawConn syscall.RawConn, counter stats.Counter) *ReadVReader {
+func NewReadVReader(reader io.Reader, rawConn syscall.RawConn) *ReadVReader {
 	return &ReadVReader{
 		Reader:  reader,
 		rawConn: rawConn,
 		alloc: allocStrategy{
 			current: 1,
 		},
-		mr:      newMultiReader(),
-		counter: counter,
+		mr: newMultiReader(),
 	}
 }

@@ -127,16 +123,10 @@ func (r *ReadVReader) ReadMultiBuffer() (MultiBuffer, error) {
 		if b.IsFull() {
 			r.alloc.Adjust(1)
 		}
-		if r.counter != nil && b != nil {
-			r.counter.Add(int64(b.Len()))
-		}
 		return MultiBuffer{b}, err
 	}

 	mb, err := r.readMulti()
-	if r.counter != nil && mb != nil {
-		r.counter.Add(int64(mb.Len()))
-	}
 	if err != nil {
 		return nil, err
 	}
@@ -144,13 +134,17 @@ func (r *ReadVReader) ReadMultiBuffer() (MultiBuffer, error) {
 	return mb, nil
 }

-var useReadv bool
+var useReadv = true

 func init() {
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
 	value := platform.NewEnvFlag("xray.buf.readv").GetValue(func() string { return defaultFlagValue })
 	switch value {
-	case defaultFlagValue, "auto", "enable":
+	case defaultFlagValue, "auto":
+		if (runtime.GOARCH == "386" || runtime.GOARCH == "amd64" || runtime.GOARCH == "s390x") && (runtime.GOOS == "linux" || runtime.GOOS == "darwin" || runtime.GOOS == "windows") {
+			useReadv = true
+		}
+	case "enable":
 		useReadv = true
 	}
 }
--- a/common/buf/readv_reader_wasm.go
+++ b/common/buf/readv_reader_wasm.go
@@ -1,4 +1,3 @@
-//go:build wasm
 // +build wasm

 package buf
--- a/common/buf/readv_test.go
+++ b/common/buf/readv_test.go
@@ -1,4 +1,3 @@
-//go:build !wasm
 // +build !wasm

 package buf_test
@@ -10,11 +9,10 @@ import (

 	"github.com/google/go-cmp/cmp"

-	"golang.org/x/sync/errgroup"
-
 	"github.com/xtls/xray-core/common"
 	. "github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/testing/servers/tcp"
+	"golang.org/x/sync/errgroup"
 )

 func TestReadvReader(t *testing.T) {
@@ -52,7 +50,7 @@ func TestReadvReader(t *testing.T) {
 	rawConn, err := conn.(*net.TCPConn).SyscallConn()
 	common.Must(err)

-	reader := NewReadVReader(conn, rawConn, nil)
+	reader := NewReadVReader(conn, rawConn)
 	var rmb MultiBuffer
 	for {
 		mb, err := reader.ReadMultiBuffer()
--- a/common/buf/readv_unix.go
+++ b/common/buf/readv_unix.go
@@ -1,4 +1,3 @@
-//go:build illumos
 // +build illumos

 package buf
--- a/common/buf/writer.go
+++ b/common/buf/writer.go
@@ -5,8 +5,6 @@ import (
 	"net"
 	"sync"

-	"github.com/xtls/xray-core/features/stats"
-
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
 )
@@ -15,8 +13,7 @@ import (
 type BufferToBytesWriter struct {
 	io.Writer

-	counter stats.Counter
-	cache   [][]byte
+	cache [][]byte
 }

 // WriteMultiBuffer implements Writer. This method takes ownership of the given buffer.
@@ -29,7 +26,7 @@ func (w *BufferToBytesWriter) WriteMultiBuffer(mb MultiBuffer) error {
 	}

 	if len(mb) == 1 {
-		return WriteAllBytes(w.Writer, mb[0].Bytes(), w.counter)
+		return WriteAllBytes(w.Writer, mb[0].Bytes())
 	}

 	if cap(w.cache) < len(mb) {
@@ -48,15 +45,9 @@ func (w *BufferToBytesWriter) WriteMultiBuffer(mb MultiBuffer) error {
 	}()

 	nb := net.Buffers(bs)
-	wc := int64(0)
-	defer func() {
-		if w.counter != nil {
-			w.counter.Add(wc)
-		}
-	}()
+
 	for size > 0 {
 		n, err := nb.WriteTo(w.Writer)
-		wc += n
 		if err != nil {
 			return err
 		}
@@ -182,7 +173,7 @@ func (w *BufferedWriter) flushInternal() error {
 	w.buffer = nil

 	if writer, ok := w.writer.(io.Writer); ok {
-		err := WriteAllBytes(writer, b.Bytes(), nil)
+		err := WriteAllBytes(writer, b.Bytes())
 		b.Release()
 		return err
 	}
--- a/common/cache/lru.go
+++ b/common/cache/lru.go
@@ -1,89 +0,0 @@
-package cache
-
-import (
-	"container/list"
-	"sync"
-)
-
-// Lru simple, fast lru cache implementation
-type Lru interface {
-	Get(key interface{}) (value interface{}, ok bool)
-	GetKeyFromValue(value interface{}) (key interface{}, ok bool)
-	PeekKeyFromValue(value interface{}) (key interface{}, ok bool) // Peek means check but NOT bring to top
-	Put(key, value interface{})
-}
-
-type lru struct {
-	capacity         int
-	doubleLinkedlist *list.List
-	keyToElement     *sync.Map
-	valueToElement   *sync.Map
-	mu               *sync.Mutex
-}
-
-type lruElement struct {
-	key   interface{}
-	value interface{}
-}
-
-// NewLru init a lru cache
-func NewLru(cap int) Lru {
-	return &lru{
-		capacity:         cap,
-		doubleLinkedlist: list.New(),
-		keyToElement:     new(sync.Map),
-		valueToElement:   new(sync.Map),
-		mu:               new(sync.Mutex),
-	}
-}
-
-func (l *lru) Get(key interface{}) (value interface{}, ok bool) {
-	l.mu.Lock()
-	defer l.mu.Unlock()
-	if v, ok := l.keyToElement.Load(key); ok {
-		element := v.(*list.Element)
-		l.doubleLinkedlist.MoveToFront(element)
-		return element.Value.(*lruElement).value, true
-	}
-	return nil, false
-}
-
-func (l *lru) GetKeyFromValue(value interface{}) (key interface{}, ok bool) {
-	l.mu.Lock()
-	defer l.mu.Unlock()
-	if k, ok := l.valueToElement.Load(value); ok {
-		element := k.(*list.Element)
-		l.doubleLinkedlist.MoveToFront(element)
-		return element.Value.(*lruElement).key, true
-	}
-	return nil, false
-}
-
-func (l *lru) PeekKeyFromValue(value interface{}) (key interface{}, ok bool) {
-	if k, ok := l.valueToElement.Load(value); ok {
-		element := k.(*list.Element)
-		return element.Value.(*lruElement).key, true
-	}
-	return nil, false
-}
-
-func (l *lru) Put(key, value interface{}) {
-	l.mu.Lock()
-	e := &lruElement{key, value}
-	if v, ok := l.keyToElement.Load(key); ok {
-		element := v.(*list.Element)
-		element.Value = e
-		l.doubleLinkedlist.MoveToFront(element)
-	} else {
-		element := l.doubleLinkedlist.PushFront(e)
-		l.keyToElement.Store(key, element)
-		l.valueToElement.Store(value, element)
-		if l.doubleLinkedlist.Len() > l.capacity {
-			toBeRemove := l.doubleLinkedlist.Back()
-			l.doubleLinkedlist.Remove(toBeRemove)
-			l.keyToElement.Delete(toBeRemove.Value.(*lruElement).key)
-			l.valueToElement.Delete(toBeRemove.Value.(*lruElement).value)
-		}
-	}
-	l.mu.Unlock()
-}
--- a/common/cache/lru_test.go
+++ b/common/cache/lru_test.go
@@ -1,86 +0,0 @@
-package cache_test
-
-import (
-	"testing"
-
-	. "github.com/xtls/xray-core/common/cache"
-)
-
-func TestLruReplaceValue(t *testing.T) {
-	lru := NewLru(2)
-	lru.Put(2, 6)
-	lru.Put(1, 5)
-	lru.Put(1, 2)
-	v, _ := lru.Get(1)
-	if v != 2 {
-		t.Error("should get 2", v)
-	}
-	v, _ = lru.Get(2)
-	if v != 6 {
-		t.Error("should get 6", v)
-	}
-}
-
-func TestLruRemoveOld(t *testing.T) {
-	lru := NewLru(2)
-	v, ok := lru.Get(2)
-	if ok {
-		t.Error("should get nil", v)
-	}
-	lru.Put(1, 1)
-	lru.Put(2, 2)
-	v, _ = lru.Get(1)
-	if v != 1 {
-		t.Error("should get 1", v)
-	}
-	lru.Put(3, 3)
-	v, ok = lru.Get(2)
-	if ok {
-		t.Error("should get nil", v)
-	}
-	lru.Put(4, 4)
-	v, ok = lru.Get(1)
-	if ok {
-		t.Error("should get nil", v)
-	}
-	v, _ = lru.Get(3)
-	if v != 3 {
-		t.Error("should get 3", v)
-	}
-	v, _ = lru.Get(4)
-	if v != 4 {
-		t.Error("should get 4", v)
-	}
-}
-
-func TestGetKeyFromValue(t *testing.T) {
-	lru := NewLru(2)
-	lru.Put(3, 3)
-	lru.Put(2, 2)
-	lru.GetKeyFromValue(3)
-	lru.Put(1, 1)
-	v, ok := lru.GetKeyFromValue(2)
-	if ok {
-		t.Error("should get nil", v)
-	}
-	v, _ = lru.GetKeyFromValue(3)
-	if v != 3 {
-		t.Error("should get 3", v)
-	}
-}
-
-func TestPeekKeyFromValue(t *testing.T) {
-	lru := NewLru(2)
-	lru.Put(3, 3)
-	lru.Put(2, 2)
-	lru.PeekKeyFromValue(3)
-	lru.Put(1, 1)
-	v, ok := lru.PeekKeyFromValue(3)
-	if ok {
-		t.Error("should get nil", v)
-	}
-	v, _ = lru.PeekKeyFromValue(2)
-	if v != 2 {
-		t.Error("should get 2", v)
-	}
-}
--- a/common/common.go
+++ b/common/common.go
@@ -5,6 +5,7 @@ package common
 import (
 	"fmt"
 	"go/build"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -14,8 +15,10 @@ import (

 //go:generate go run github.com/xtls/xray-core/common/errors/errorgen

-// ErrNoClue is for the situation that existing information is not enough to make a decision. For example, Router may return this error when there is no suitable route.
-var ErrNoClue = errors.New("not enough information for making a decision")
+var (
+	// ErrNoClue is for the situation that existing information is not enough to make a decision. For example, Router may return this error when there is no suitable route.
+	ErrNoClue = errors.New("not enough information for making a decision")
+)

 // Must panics if err is not nil.
 func Must(err error) {
@@ -66,7 +69,7 @@ func GetRuntimeEnv(key string) (string, error) {
 	}
 	var data []byte
 	var runtimeEnv string
-	data, readErr := os.ReadFile(file)
+	data, readErr := ioutil.ReadFile(file)
 	if readErr != nil {
 		return "", readErr
 	}
@@ -128,7 +131,7 @@ func GetModuleName(pathToProjectRoot string) (string, error) {
 	for {
 		if idx := strings.LastIndex(loopPath, string(filepath.Separator)); idx >= 0 {
 			gomodPath := filepath.Join(loopPath, "go.mod")
-			gomodBytes, err := os.ReadFile(gomodPath)
+			gomodBytes, err := ioutil.ReadFile(gomodPath)
 			if err != nil {
 				loopPath = loopPath[:idx]
 				continue
--- a/common/crypto/auth.go
+++ b/common/crypto/auth.go
@@ -290,6 +290,7 @@ func (w *AuthenticationWriter) writeStream(mb buf.MultiBuffer) error {
 		mb = nb

 		eb, err := w.seal(rawBytes[:nBytes])
+
 		if err != nil {
 			buf.ReleaseMulti(mb2Write)
 			return err
--- a/common/crypto/chacha20_test.go
+++ b/common/crypto/chacha20_test.go
@@ -18,7 +18,7 @@ func mustDecodeHex(s string) []byte {
 }

 func TestChaCha20Stream(t *testing.T) {
-	cases := []struct {
+	var cases = []struct {
 		key    []byte
 		iv     []byte
 		output []byte
--- a/common/crypto/internal/chacha_core.generated.go
+++ b/common/crypto/internal/chacha_core.generated.go
@@ -3,7 +3,7 @@ package internal
 import "encoding/binary"

 func ChaCha20Block(s *[16]uint32, out []byte, rounds int) {
-	x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15 := s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[8], s[9], s[10], s[11], s[12], s[13], s[14], s[15]
+	var x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15 = s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7], s[8], s[9], s[10], s[11], s[12], s[13], s[14], s[15]
 	for i := 0; i < rounds; i += 2 {
 		var x uint32

--- a/common/crypto/internal/chacha_core_gen.go
+++ b/common/crypto/internal/chacha_core_gen.go
@@ -1,4 +1,3 @@
-//go:build generate
 // +build generate

 package main
@@ -56,7 +55,7 @@ func ChaCha20Block(s *[16]uint32, out []byte, rounds int) {
 }

 func main() {
-	file, err := os.OpenFile("chacha_core.generated.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0o644)
+	file, err := os.OpenFile("chacha_core.generated.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
 	if err != nil {
 		log.Fatalf("Failed to generate chacha_core.go: %v", err)
 	}
--- a/common/crypto/io.go
+++ b/common/crypto/io.go
@@ -27,7 +27,9 @@ func (r *CryptionReader) Read(data []byte) (int, error) {
 	return nBytes, err
 }

-var _ buf.Writer = (*CryptionWriter)(nil)
+var (
+	_ buf.Writer = (*CryptionWriter)(nil)
+)

 type CryptionWriter struct {
 	stream    cipher.Stream
@@ -48,7 +50,7 @@ func NewCryptionWriter(stream cipher.Stream, writer io.Writer) *CryptionWriter {
 func (w *CryptionWriter) Write(data []byte) (int, error) {
 	w.stream.XORKeyStream(data, data)

-	if err := buf.WriteAllBytes(w.writer, data, nil); err != nil {
+	if err := buf.WriteAllBytes(w.writer, data); err != nil {
 		return 0, err
 	}
 	return len(data), nil
--- a/common/errors/errorgen/main.go
+++ b/common/errors/errorgen/main.go
@@ -2,8 +2,11 @@ package main

 import (
 	"fmt"
+	"log"
 	"os"
 	"path/filepath"
+
+	"github.com/xtls/xray-core/common"
 )

 func main() {
@@ -17,21 +20,26 @@ func main() {
 		pkg = "core"
 	}

-	file, err := os.OpenFile("errors.generated.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0o644)
+	moduleName, gmnErr := common.GetModuleName(pwd)
+	if gmnErr != nil {
+		fmt.Println("can not get module path", gmnErr)
+		os.Exit(1)
+	}
+
+	file, err := os.OpenFile("errors.generated.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
 	if err != nil {
-		fmt.Printf("Failed to generate errors.generated.go: %v", err)
+		log.Fatalf("Failed to generate errors.generated.go: %v", err)
 		os.Exit(1)
 	}
 	defer file.Close()

-	fmt.Fprintf(file, `package %s
-
-import "github.com/xtls/xray-core/common/errors"
-
-type errPathObjHolder struct{}
-
-func newError(values ...interface{}) *errors.Error {
-	return errors.New(values...).WithPathObj(errPathObjHolder{})
-}
-`, pkg)
+	fmt.Fprintln(file, "package", pkg)
+	fmt.Fprintln(file, "")
+	fmt.Fprintln(file, "import \""+moduleName+"/common/errors\"")
+	fmt.Fprintln(file, "")
+	fmt.Fprintln(file, "type errPathObjHolder struct{}")
+	fmt.Fprintln(file, "")
+	fmt.Fprintln(file, "func newError(values ...interface{}) *errors.Error {")
+	fmt.Fprintln(file, "	return errors.New(values...).WithPathObj(errPathObjHolder{})")
+	fmt.Fprintln(file, "}")
 }
--- a/common/errors/errors.go
+++ b/common/errors/errors.go
@@ -40,8 +40,10 @@ func (err *Error) pkgPath() string {
 		return ""
 	}
 	path := reflect.TypeOf(err.pathObj).PkgPath()
-	if len(path) >= trim {
-		return path[trim:]
+	for i := 0; i < len(path); i++ {
+		if path[i] == '/' {
+			return path[trim:]
+		}
 	}
 	return path
 }
--- a/common/log/dns.go
+++ b/common/log/dns.go
@@ -1,59 +0,0 @@
-package log
-
-import (
-	"net"
-	"strings"
-	"time"
-)
-
-type DNSLog struct {
-	Server  string
-	Domain  string
-	Result  []net.IP
-	Status  dnsStatus
-	Elapsed time.Duration
-	Error   error
-}
-
-func (l *DNSLog) String() string {
-	builder := &strings.Builder{}
-
-	// Server got answer: domain -> [ip1, ip2] 23ms
-	builder.WriteString(l.Server)
-	builder.WriteString(" ")
-	builder.WriteString(string(l.Status))
-	builder.WriteString(" ")
-	builder.WriteString(l.Domain)
-	builder.WriteString(" -> [")
-	builder.WriteString(joinNetIP(l.Result))
-	builder.WriteString("]")
-
-	if l.Elapsed > 0 {
-		builder.WriteString(" ")
-		builder.WriteString(l.Elapsed.String())
-	}
-	if l.Error != nil {
-		builder.WriteString(" <")
-		builder.WriteString(l.Error.Error())
-		builder.WriteString(">")
-	}
-	return builder.String()
-}
-
-type dnsStatus string
-
-var (
-	DNSQueried  = dnsStatus("got answer:")
-	DNSCacheHit = dnsStatus("cache HIT:")
-)
-
-func joinNetIP(ips []net.IP) string {
-	if len(ips) == 0 {
-		return ""
-	}
-	sips := make([]string, 0, len(ips))
-	for _, ip := range ips {
-		sips = append(sips, ip.String())
-	}
-	return strings.Join(sips, ", ")
-}
--- a/common/log/log.go
+++ b/common/log/log.go
@@ -32,7 +32,9 @@ func Record(msg Message) {
 	logHandler.Handle(msg)
 }

-var logHandler syncHandler
+var (
+	logHandler syncHandler
+)

 // RegisterHandler register a new handler as current log handler. Previous registered handler will be discarded.
 func RegisterHandler(handler Handler) {
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Jim Han	8a647c1d8e	Update config.yaml	2021-03-20 18:22:06 +08:00
Jim Han	ea3be76fd5	Add links	2021-03-16 19:25:42 +08:00
秋のかえで	7abb02ab44	Chore: add issues config (#344 )	2021-03-07 14:09:59 +08:00
JimhHan	18574aca47	Fix: grammar Co-Authored-By: R3pl4c3r <30682790+R3pl4c3r@users.noreply.github.com>	2021-03-07 12:56:52 +08:00
JimhHan	769bed9dbc	Update issue templates Co-Authored-By: 惜别 <realsekibetu@gmail.com> Co-Authored-By: R3pl4c3r <30682790+R3pl4c3r@users.noreply.github.com>	2021-03-07 12:51:54 +08:00
JimhHan	1233bd5031	Chore: issue templates Co-Authored-By: 惜别 <realsekibetu@gmail.com>	2021-03-06 22:01:06 +08:00
JimhHan	039c8e63e7	Add: Issue templates	2021-03-06 21:06:58 +08:00
Jim Han	29db059a87	Create: Bug report(zh-CN) template	2021-03-06 16:34:05 +08:00