Added experiment to avoid sending the termination signal

(cherry picked from commit c5357e1f000054ba5836468922cae52a830c8019)
VMess AEAD based packet length
2025-08-23 18:16:50 +08:00 · 2021-10-22 18:31:54 +08:00 · 2021-10-22 18:30:30 +08:00 · 2021-10-22 17:59:41 +08:00 · 2021-10-22 17:59:41 +08:00 · 2021-10-22 17:59:41 +08:00
507 changed files with 7808 additions and 20583 deletions
--- a/.github/build/friendly-filenames.json
+++ b/.github/build/friendly-filenames.json
@@ -2,6 +2,7 @@
  "android-arm64": { "friendlyName": "android-arm64-v8a" },
  "darwin-amd64": { "friendlyName": "macos-64" },
  "darwin-arm64": { "friendlyName": "macos-arm64-v8a" },
+  "dragonfly-amd64": { "friendlyName": "dragonfly-64" },
  "freebsd-386": { "friendlyName": "freebsd-32" },
  "freebsd-amd64": { "friendlyName": "freebsd-64" },
  "freebsd-arm64": { "friendlyName": "freebsd-arm64-v8a" },
@@ -21,7 +22,6 @@
  "linux-ppc64le": { "friendlyName": "linux-ppc64le" },
  "linux-ppc64": { "friendlyName": "linux-ppc64" },
  "linux-riscv64": { "friendlyName": "linux-riscv64" },
-  "linux-loong64": { "friendlyName": "linux-loong64" },
  "linux-s390x": { "friendlyName": "linux-s390x" },
  "openbsd-386": { "friendlyName": "openbsd-32" },
  "openbsd-amd64": { "friendlyName": "openbsd-64" },
@@ -31,4 +31,4 @@
  "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
@@ -9,7 +9,3 @@ updates:
    directory: "/" # Location of package manifests
    schedule:
      interval: "daily"
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"
--- a/.github/docker/Dockerfile
+++ b/.github/docker/Dockerfile
@@ -1,22 +0,0 @@
-# syntax=docker/dockerfile:1
-FROM --platform=$BUILDPLATFORM golang:alpine AS build
-WORKDIR /src
-COPY . .
-ARG TARGETOS TARGETARCH
-RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
-
-FROM --platform=${TARGETPLATFORM} alpine:latest
-WORKDIR /root
-COPY .github/docker/files/config.json /etc/xray/config.json
-COPY --from=build /src/xray /usr/bin/xray
-RUN set -ex \
-	&& apk add --no-cache tzdata ca-certificates \
-	&& mkdir -p /var/log/xray /usr/share/xray \
-    && chmod +x /usr/bin/xray \
-	&& wget -O /usr/share/xray/geosite.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat \
-	&& wget -O /usr/share/xray/geoip.dat https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geoip.dat
-
-VOLUME /etc/xray
-ENV TZ=Asia/Shanghai
-ENTRYPOINT [ "/usr/bin/xray" ]
-CMD [ "-config", "/etc/xray/config.json" ]
--- a/.github/docker/files/config.json
+++ b/.github/docker/files/config.json
@@ -1,18 +0,0 @@
-{
-  "inbounds": [{
-    "port": 9000,
-    "protocol": "vmess",
-    "settings": {
-      "clients": [
-        {
-          "id": "1eb6e917-774b-4a84-aff6-b058577c60a5",
-          "level": 1
-        }
-      ]
-    }
-  }],
-  "outbounds": [{
-    "protocol": "freedom",
-    "settings": {}
-  }]
-}
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -1,45 +0,0 @@
-name: Build docker image
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  build-image:
-    runs-on: ubuntu-latest
-    permissions:
-      packages: write
-    steps:
-      - uses: actions/checkout@v4
-      - name: Docker metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ghcr.io/${{ github.repository_owner }}/xray-core
-          flavor: latest=true
-          tags: |
-            type=ref,event=branch
-            type=ref,event=pr
-            type=semver,pattern={{version}}
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - # Add support for more platforms with QEMU (optional)
-        # https://github.com/docker/setup-qemu-action
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-      - name: Build and push
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          platforms: linux/amd64,linux/arm64
-          file: .github/docker/Dockerfile
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,60 +20,16 @@ on:
      - "go.sum"
      - ".github/workflows/*.yml"
 jobs:
-  prepare:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
-        with:
-          path: resources
-          key: xray-geodat-
-
-      - name: Update Geodat
-        id: update
-        uses: nick-fields/retry@v3
-        with:
-          timeout_minutes: 60
-          retry_wait_seconds: 60
-          max_attempts: 60
-          command: |
-            [ -d 'resources' ] || mkdir resources
-            LIST=('geoip geoip geoip' 'domain-list-community dlc geosite')
-            for i in "${LIST[@]}"
-            do
-              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3}'))
-              FILE_NAME="${INFO[2]}.dat"
-              echo -e "Verifying HASH key..."
-              HASH="$(curl -sL "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat.sha256sum" | awk -F ' ' '{print $1}')"
-              if [ -s "./resources/${FILE_NAME}" ] && [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ]; then
-                  continue
-              else
-                  echo -e "Downloading https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat..."
-                  curl -L "https://raw.githubusercontent.com/v2fly/${INFO[0]}/release/${INFO[1]}.dat" -o ./resources/${FILE_NAME}
-                  echo -e "Verifying HASH key..."
-                  [ "$(sha256sum "./resources/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
-                  echo "unhit=true" >> $GITHUB_OUTPUT
-              fi
-            done
-
-      - name: Save Cache
-        uses: actions/cache/save@v4
-        if: ${{ steps.update.outputs.unhit }}
-        with:
-          path: resources
-          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}
-
  build:
-    needs: prepare
-    permissions:
-      contents: write
    strategy:
      matrix:
        # Include amd64 on all platforms.
-        goos: [windows, freebsd, openbsd, linux, darwin]
+        goos: [windows, freebsd, openbsd, linux, dragonfly, darwin]
        goarch: [amd64, 386]
        exclude:
-          # Exclude i386 on darwin
+          # Exclude i386 on darwin and dragonfly.
+          - goarch: 386
+            goos: dragonfly
          - goarch: 386
            goos: darwin
        include:
@@ -103,14 +59,12 @@ jobs:
            goarch: arm
            goarm: 7
          # BEGIN Other architectures
-          # BEGIN riscv64 & ARM64 & LOONG64
+          # BEGIN riscv64 & ARM64
          - goos: linux
            goarch: arm64
          - goos: linux
            goarch: riscv64
-          - goos: linux
-            goarch: loong64
-          # END riscv64 & ARM64 & LOONG64
+          # END riscv64 & ARM64
          # BEGIN MIPS
          - goos: linux
            goarch: mips64
@@ -156,49 +110,75 @@ jobs:
      CGO_ENABLED: 0
    steps:
      - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2

      - name: Show workflow information 
+        id: get_filename
        run: |
          export _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
          echo "GOOS: $GOOS, GOARCH: $GOARCH, GOARM: $GOARM, GOMIPS: $GOMIPS, RELEASE_NAME: $_NAME"
+          echo "::set-output name=ASSET_NAME::$_NAME"
          echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV

      - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v2
        with:
-          go-version-file: go.mod
-          check-latest: true
+          go-version: ^1.17.2

      - name: Get project dependencies
        run: go mod download
      
+      - name: Replace Custom to Commit ID
+        if: github.event_name != 'release'
+        run: |
+          ID=$(git rev-parse --short ${{ github.sha }})
+          if [ "${{ github.event_name }}" == 'pull_request' ]
+          then
+            ID=$(git rev-parse --short ${{ github.event.pull_request.head.sha }})
+          fi
+          sed -i '/build/ s/Custom/'$ID'/' ./core/core.go
+ 
      - name: Build Xray
        run: |
          mkdir -p build_assets
-          make
-          find . -maxdepth 1 -type f -regex '.*\(wxray\|xray\|xray_softfloat\)\(\|.exe\)' -exec mv {} ./build_assets/ \;
-
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
-        with:
-          path: resources
-          key: xray-geodat-
-
-      - name: Copy README.md & LICENSE
+          go build -v -o build_assets/xray -trimpath -ldflags "-s -w -buildid=" ./main
+    
+      - name: Build Mips softfloat Xray
+        if: matrix.goarch == 'mips' || matrix.goarch == 'mipsle'
+        run: |
+          GOMIPS=softfloat go build -v -o build_assets/xray_softfloat -trimpath -ldflags "-s -w -buildid=" ./main
+
+      - name: Rename Windows Xray
+        if: matrix.goos == 'windows'
+        run: |
+          cd ./build_assets || exit 1
+          mv xray xray.exe
+
+      - name: Prepare to release
        run: |
-          mv -f resources/* build_assets
          cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
          cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
+          LIST=('geoip geoip geoip' 'domain-list-community dlc geosite')
+          for i in "${LIST[@]}"
+          do
+            INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3}'))
+            LASTEST_TAG="$(curl -sL "https://api.github.com/repos/v2fly/${INFO[0]}/releases" | jq -r ".[0].tag_name" || echo "latest")"
+            FILE_NAME="${INFO[2]}.dat"
+            echo -e "Downloading ${FILE_NAME}..."
+            curl -L "https://github.com/v2fly/${INFO[0]}/releases/download/${LASTEST_TAG}/${INFO[1]}.dat" -o ./build_assets/${FILE_NAME}
+            echo -e "Verifying HASH key..."
+            HASH="$(curl -sL "https://github.com/v2fly/${INFO[0]}/releases/download/${LASTEST_TAG}/${INFO[1]}.dat.sha256sum" | awk -F ' ' '{print $1}')"
+            [ "$(sha256sum "./build_assets/${FILE_NAME}" | awk -F ' ' '{print $1}')" == "${HASH}" ] || { echo -e "The HASH key of ${FILE_NAME} does not match cloud one."; exit 1; }
+          done

      - name: Create ZIP archive
        shell: bash
        run: |
          pushd build_assets || exit 1
          touch -mt $(date +%Y01010000) *
-          zip -9vr ../Xray-${{ env.ASSET_NAME }}.zip .
+          zip -9vr ../Xray-$ASSET_NAME.zip .
          popd || exit 1
-          FILE=./Xray-${{ env.ASSET_NAME }}.zip
+          FILE=./Xray-$ASSET_NAME.zip
          DGST=$FILE.dgst
          for METHOD in {"md5","sha1","sha256","sha512"}
          do
@@ -207,20 +187,20 @@ jobs:

      - name: Change the name
        run: |
-          mv build_assets Xray-${{ env.ASSET_NAME }}
+          mv build_assets Xray-$ASSET_NAME

      - name: Upload files to Artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v2
        with:
-          name: Xray-${{ env.ASSET_NAME }}
+          name: Xray-${{ steps.get_filename.outputs.ASSET_NAME }}
          path: |
-            ./Xray-${{ env.ASSET_NAME }}/*
+            ./Xray-${{ steps.get_filename.outputs.ASSET_NAME }}/*

      - name: Upload binaries to release
        uses: svenstaro/upload-release-action@v2
        if: github.event_name == 'release'
        with:
          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: ./Xray-${{ env.ASSET_NAME }}.zip*
+          file: ./Xray-${{ steps.get_filename.outputs.ASSET_NAME }}.zip*
          tag: ${{ github.ref }}
          file_glob: true
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,26 +19,30 @@ on:

 jobs:
  test:
-    permissions:
-      contents: read
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [windows-latest, ubuntu-latest, macos-latest]
    steps:
-      - name: Checkout codebase
-        uses: actions/checkout@v4
      - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v2
        with:
-          go-version-file: go.mod
-          check-latest: true
-      - name: Restore Cache
-        uses: actions/cache/restore@v4
-        with:
-          path: resources
-          key: xray-geodat-
-          enableCrossOsArchive: true
+          go-version: ^1.17.2
+      - name: Checkout codebase
+        uses: actions/checkout@v2
+
+      - name: Prepare geo*dat
+        if: ${{ matrix.os != 'windows-latest' }}
+        run: |
+          mkdir resources
+          wget -O ./resources/geoip.dat https://github.com/v2fly/geoip/releases/latest/download/geoip.dat
+          wget -O ./resources/geosite.dat https://github.com/v2fly/domain-list-community/releases/latest/download/dlc.dat
+      - name: Prepare geo*dat for Windows
+        if: ${{ matrix.os == 'windows-latest' }}
+        run: |
+          mkdir resources
+          Invoke-WebRequest -Uri "https://github.com/v2fly/geoip/releases/latest/download/geoip.dat" -OutFile "./resources/geoip.dat"
+          Invoke-WebRequest -Uri "https://github.com/v2fly/domain-list-community/releases/latest/download/dlc.dat" -OutFile "./resources/geosite.dat"
      - name: Test
        run: go test -timeout 1h -v ./...
--- a/.gitignore
+++ b/.gitignore
@@ -18,13 +18,11 @@
 .idea
 *.zip
 *.tar.gz
-xray
-xray_softfloat
+v2ray
+v2ctl
 mockgen
 vprotogen
 !infra/vprotogen/
 errorgen
 !common/errors/errorgen/
 *.dat
-.vscode
-/build_assets
--- a/29
+++ b/29
@@ -1,29 +0,0 @@
-NAME = xray
-
-VERSION=$(shell git describe --always --dirty)
-
-LDFLAGS = -X github.com/xtls/xray-core/core.build=$(VERSION) -s -w -buildid=
-PARAMS = -trimpath -ldflags "$(LDFLAGS)" -v
-MAIN = ./main
-PREFIX ?= $(shell go env GOPATH)
-ifeq ($(GOOS),windows)
-OUTPUT = $(NAME).exe
-ADDITION = go build -o w$(NAME).exe -trimpath -ldflags "-H windowsgui $(LDFLAGS)" -v $(MAIN)
-else
-OUTPUT = $(NAME)
-endif
-ifeq ($(shell echo "$(GOARCH)" | grep -Pq "(mips|mipsle)" && echo true),true) # 
-ADDITION = GOMIPS=softfloat go build -o $(NAME)_softfloat -trimpath -ldflags "$(LDFLAGS)" -v $(MAIN)
-endif
-.PHONY: clean
-
-build:
-	go build -o $(OUTPUT) $(PARAMS) $(MAIN)
-	$(ADDITION)
-
-install:
-	go build -o $(PREFIX)/bin/$(OUTPUT) $(PARAMS) $(MAIN)
-
-clean:
-	go clean -v -i $(PWD)
-	rm -f xray xray.exe wxray.exe xray_softfloat
--- a/README.md
+++ b/README.md
@@ -1,16 +1,85 @@
 # Project X

-[Project X](https://github.com/XTLS) originates from XTLS protocol, providing a set of network tools such as [Xray-core](https://github.com/XTLS/Xray-core) and [REALITY](https://github.com/XTLS/REALITY).
-
-[README](https://github.com/XTLS/Xray-core#readme) is open, so feel free to submit your project [here](https://github.com/XTLS/Xray-core/pulls).
+[Project X](https://github.com/XTLS) originates from XTLS protocol, provides a set of network tools such as [Xray-core](https://github.com/XTLS/Xray-core) and [Xray-flutter](https://github.com/XTLS/Xray-flutter).

 ## License

 [Mozilla Public License Version 2.0](https://github.com/XTLS/Xray-core/blob/main/LICENSE)

-## Documentation
+## Installation

-[Project X Official Website](https://xtls.github.io)
+- Linux Script
+  - [Xray-install](https://github.com/XTLS/Xray-install)
+  - [Xray-script](https://github.com/kirin10000/Xray-script)
+- Docker
+  - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
+  - Xray-docker
+- One Click
+  - [ProxySU](https://github.com/proxysu/ProxySU)
+  - [v2ray-agent](https://github.com/mack-a/v2ray-agent)
+  - [Xray-yes](https://github.com/jiuqi9997/Xray-yes)
+  - [Xray_onekey](https://github.com/wulabing/Xray_onekey)
+- Magisk
+  - [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)
+
+## Usage
+
+[Xray-examples](https://github.com/XTLS/Xray-examples) / [VLESS-TCP-XTLS-WHATEVER](https://github.com/XTLS/Xray-examples/tree/main/VLESS-TCP-XTLS-WHATEVER)
+
+## GUI Clients
+
+- OpenWrt
+  - [PassWall](https://github.com/xiaorouji/openwrt-passwall)
+  - [Hello World](https://github.com/jerrykuku/luci-app-vssr)
+  - [ShadowSocksR Plus+](https://github.com/fw876/helloworld)
+  - [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)
+  - [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)
+  - [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
+
+This repo relies on the following third-party projects:
+
+- Special thanks:
+  - [v2fly/v2ray-core](https://github.com/v2fly/v2ray-core)
+- In production:
+  - [gorilla/websocket](https://github.com/gorilla/websocket)
+  - [lucas-clemente/quic-go](https://github.com/lucas-clemente/quic-go)
+  - [pires/go-proxyproto](https://github.com/pires/go-proxyproto)
+  - [seiflotfy/cuckoofilter](https://github.com/seiflotfy/cuckoofilter)
+  - [google/starlark-go](https://github.com/google/starlark-go)
+- For testing only:
+  - [miekg/dns](https://github.com/miekg/dns)
+  - [h12w/socks](https://github.com/h12w/socks)
+
+## Compilation
+
+### Windows
+
+```
+go build -o xray.exe -trimpath -ldflags "-s -w -buildid=" ./main
+```
+
+### Linux / macOS
+
+```
+go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+```

 ## Telegram

@@ -18,132 +87,6 @@

 [Project X Channel](https://t.me/projectXtls)

-## Installation
-
- Linux Script
-  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install)
- Docker
-  - Official: [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) 
-  - [iamybj/docker-xray](https://hub.docker.com/r/iamybj/docker-xray)
-  - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
- Web Panel
-  - [X-UI-English](https://github.com/NidukaAkalanka/x-ui-english), [3X-UI](https://github.com/MHSanaei/3x-ui), [X-UI](https://github.com/alireza0/x-ui), [X-UI](https://github.com/diditra/x-ui)
-  - [Xray-UI](https://github.com/qist/xray-ui), [X-UI](https://github.com/sing-web/x-ui)
-  - [Hiddify](https://github.com/hiddify/hiddify-config)
-  - [Marzban](https://github.com/Gozargah/Marzban)
-  - [Libertea](https://github.com/VZiChoushaDui/Libertea)
- One Click
-  - [Xray-REALITY](https://github.com/zxcvos/Xray-script), [xray-reality](https://github.com/sajjaddg/xray-reality), [reality-ezpz](https://github.com/aleskxyz/reality-ezpz)
-  - [Xray_bash_onekey](https://github.com/hello-yunshu/Xray_bash_onekey), [XTool](https://github.com/LordPenguin666/XTool)
-  - [v2ray-agent](https://github.com/mack-a/v2ray-agent), [Xray_onekey](https://github.com/wulabing/Xray_onekey), [ProxySU](https://github.com/proxysu/ProxySU)
- Magisk
-  - [Xray4Magisk](https://github.com/Asterisk4Magisk/Xray4Magisk)
-  - [Xray_For_Magisk](https://github.com/E7KMbb/Xray_For_Magisk)
- Homebrew
-  - `brew install xray`
-
-## Usage
-
- Example
-  - [VLESS-XTLS-uTLS-REALITY](https://github.com/XTLS/REALITY#readme)
-  - [VLESS-TCP-XTLS-Vision](https://github.com/XTLS/Xray-examples/tree/main/VLESS-TCP-XTLS-Vision)
-  - [All-in-One-fallbacks-Nginx](https://github.com/XTLS/Xray-examples/tree/main/All-in-One-fallbacks-Nginx)
- Xray-examples
-  - [XTLS/Xray-examples](https://github.com/XTLS/Xray-examples)
-  - [chika0801/Xray-examples](https://github.com/chika0801/Xray-examples)
-  - [lxhao61/integrated-examples](https://github.com/lxhao61/integrated-examples)
- Tutorial
-  - [XTLS Vision](https://github.com/chika0801/Xray-install)
-  - [REALITY (English)](https://cscot.pages.dev/2023/03/02/Xray-REALITY-tutorial/)
-  - [XTLS-Iran-Reality (English)](https://github.com/SasukeFreestyle/XTLS-Iran-Reality)
-  - [Xray REALITY with 'steal oneself' (English)](https://computerscot.github.io/vless-xtls-utls-reality-steal-oneself.html)
-  - [Xray with WireGuard inbound (English)](https://g800.pages.dev/wireguard)
-
-## GUI Clients
-
- OpenWrt
-  - [PassWall](https://github.com/xiaorouji/openwrt-passwall), [PassWall 2](https://github.com/xiaorouji/openwrt-passwall2)
-  - [ShadowSocksR Plus+](https://github.com/fw876/helloworld)
-  - [luci-app-xray](https://github.com/yichya/luci-app-xray) ([openwrt-xray](https://github.com/yichya/openwrt-xray))
- Windows
-  - [v2rayN](https://github.com/2dust/v2rayN)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
-  - [Furious](https://github.com/LorenEteval/Furious)
-  - [HiddifyN](https://github.com/hiddify/HiddifyN)
-  - [Invisible Man - Xray](https://github.com/InvisibleManVPN/InvisibleMan-XRayClient)
- Android
-  - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [HiddifyNG](https://github.com/hiddify/HiddifyNG)
-  - [X-flutter](https://github.com/XTLS/X-flutter)
- iOS & macOS arm64
-  - [Mango](https://github.com/arror/Mango)
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
-  - [Streisand](https://apps.apple.com/app/streisand/id6450534064)
- macOS arm64 & x64
-  - [V2rayU](https://github.com/yanue/V2rayU)
-  - [V2RayXS](https://github.com/tzmax/V2RayXS)
-  - [Furious](https://github.com/LorenEteval/Furious)
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
- Linux
-  - [v2rayA](https://github.com/v2rayA/v2rayA)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
-  - [Furious](https://github.com/LorenEteval/Furious)
-
-## Others that support VLESS, XTLS, REALITY, XUDP, PLUX...
-
- iOS & macOS arm64
-  - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
- Xray Tools
-  - [xray-knife](https://github.com/lilendian0x00/xray-knife)
- Xray Wrapper
-  - [XTLS/libXray](https://github.com/XTLS/libXray)
-  - [xtlsapi](https://github.com/hiddify/xtlsapi)
-  - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
-  - [XrayKit](https://github.com/arror/XrayKit)
-  - [Xray-core-python](https://github.com/LorenEteval/Xray-core-python)
- [XrayR](https://github.com/XrayR-project/XrayR)
-  - [XrayR-release](https://github.com/XrayR-project/XrayR-release)
-  - [XrayR-V2Board](https://github.com/missuo/XrayR-V2Board)
- [Clash.Meta](https://github.com/MetaCubeX/Clash.Meta)
-  - [Clash Verge](https://github.com/zzzgydi/clash-verge)
-  - [clashN](https://github.com/2dust/clashN)
-  - [Clash Meta for Android](https://github.com/MetaCubeX/ClashMetaForAndroid)
-  - [meta_for_ios](https://t.me/meta_for_ios)
- [sing-box](https://github.com/SagerNet/sing-box)
-  - [installReality](https://github.com/BoxXt/installReality)
-  - [sbox-reality](https://github.com/Misaka-blog/sbox-reality)
-  - [sing-box-for-ios](https://github.com/SagerNet/sing-box-for-ios)
-
-## Contributing
-
-[Code of Conduct](https://github.com/XTLS/Xray-core/blob/main/CODE_OF_CONDUCT.md)
-
-## Credits
-
- [Xray-core v1.0.0](https://github.com/XTLS/Xray-core/releases/tag/v1.0.0) was forked from [v2fly-core 9a03cc5](https://github.com/v2fly/v2ray-core/commit/9a03cc5c98d04cc28320fcee26dbc236b3291256), and we have made & accumulated a huge number of enhancements over time, check [the release notes for each version](https://github.com/XTLS/Xray-core/releases).
- For third-party projects used in [Xray-core](https://github.com/XTLS/Xray-core), check your local or [the latest go.mod](https://github.com/XTLS/Xray-core/blob/main/go.mod).
-
-## Compilation
-
-### Windows (PowerShell)
-
-```powershell
-$env:CGO_ENABLED=0
-go build -o xray.exe -trimpath -ldflags "-s -w -buildid=" ./main
-```
-
-### Linux / macOS
-
-```bash
-CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
-```
-
-### Reproducible Releases
-
-```bash
-make
-```
-
 ## Stargazers over time

 [![Stargazers over time](https://starchart.cc/XTLS/Xray-core.svg)](https://starchart.cc/XTLS/Xray-core)
--- a/app/commander/commander.go
+++ b/app/commander/commander.go
@@ -7,11 +7,12 @@ import (
 	"net"
 	"sync"

+	"google.golang.org/grpc"
+
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/signal/done"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
-	"google.golang.org/grpc"
 )

 // Commander is a Xray feature that provides gRPC methods to external clients.
--- a/app/commander/config.pb.go
+++ b/app/commander/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/commander/config.proto

 package commander
--- a/app/commander/outbound.go
+++ b/app/commander/outbound.go
@@ -37,7 +37,7 @@ func (l *OutboundListener) Accept() (net.Conn, error) {
 	}
 }

-// Close implements net.Listener.
+// Close implement net.Listener.
 func (l *OutboundListener) Close() error {
 	common.Must(l.done.Close())
 L:
--- a/app/commander/service.go
+++ b/app/commander/service.go
@@ -3,9 +3,10 @@ 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
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/dispatcher/config.proto

 package dispatcher
--- a/app/dispatcher/default.go
+++ b/app/dispatcher/default.go
@@ -4,6 +4,7 @@ package dispatcher

 import (
 	"context"
+	"github.com/xtls/xray-core/features/dns"
 	"strings"
 	"sync"
 	"time"
@@ -15,7 +16,6 @@ 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"
@@ -92,17 +92,13 @@ type DefaultDispatcher struct {
 	router routing.Router
 	policy policy.Manager
 	stats  stats.Manager
-	dns    dns.Client
-	fdns   dns.FakeDNSEngine
+	hosts  dns.HostsLookup
 }

 func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		d := new(DefaultDispatcher)
 		if err := core.RequireFeatures(ctx, func(om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dc dns.Client) error {
-			core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
-				d.fdns = fdns
-			})
 			return d.Init(config.(*Config), om, router, pm, sm, dc)
 		}); err != nil {
 			return nil, err
@@ -112,12 +108,14 @@ func init() {
 }

 // Init initializes DefaultDispatcher.
-func (d *DefaultDispatcher) Init(config *Config, om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dns dns.Client) error {
+func (d *DefaultDispatcher) Init(config *Config, om outbound.Manager, router routing.Router, pm policy.Manager, sm stats.Manager, dc dns.Client) error {
 	d.ohm = om
 	d.router = router
 	d.policy = pm
 	d.stats = sm
-	d.dns = dns
+	if hosts, ok := dc.(dns.HostsLookup); ok {
+		d.hosts = hosts
+	}
 	return nil
 }

@@ -180,26 +178,27 @@ func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *tran
 	return inboundLink, outboundLink
 }

-func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
+func shouldOverride(ctx context.Context, result SniffResult, request session.SniffingRequest, destination net.Destination) bool {
 	domain := result.Domain()
-	if domain == "" {
-		return false
-	}
 	for _, d := range request.ExcludeForDomain {
 		if strings.ToLower(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()
 	}
 	for _, p := range request.OverrideDestinationForProtocol {
-		if strings.HasPrefix(protocolString, p) || strings.HasPrefix(p, protocolString) {
+		if strings.HasPrefix(protocolString, p) {
 			return true
 		}
-		if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" &&
-			fkr0.IsIPInIPPool(destination.Address) {
+		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
 		}
@@ -218,46 +217,53 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	if !destination.IsValid() {
 		panic("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
-	if ob == nil {
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
+	ob := &session.Outbound{
+		Target: destination,
 	}
-	ob.OriginalTarget = destination
-	ob.Target = destination
+	ctx = session.ContextWithOutbound(ctx, ob)
+
+	inbound, outbound := d.getLink(ctx)
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
 		ctx = session.ContextWithContent(ctx, content)
 	}
-
 	sniffingRequest := content.SniffingRequest
-	inbound, outbound := d.getLink(ctx)
-	if !sniffingRequest.Enabled {
+	switch {
+	case !sniffingRequest.Enabled:
 		go d.routedDispatch(ctx, outbound, destination)
-	} else {
+	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)
+				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
+					ob.RouteTarget = destination
+				} else {
+					ob.Target = destination
+				}
+			}
+		}
+		go d.routedDispatch(ctx, outbound, destination)
+	default:
 		go func() {
 			cReader := &cachedReader{
 				reader: outbound.Reader.(*pipe.Reader),
 			}
 			outbound.Reader = cReader
-			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
+			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly)
 			if err == nil {
 				content.Protocol = result.Protocol()
 			}
-			if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
+			if err == nil && shouldOverride(ctx, result, sniffingRequest, destination) {
 				domain := result.Domain()
 				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
 				destination.Address = net.ParseAddress(domain)
-				protocol := result.Protocol()
-				if resComp, ok := result.(SnifferResultComposite); ok {
-					protocol = resComp.ProtocolForDomainResult()
-				}
-				isFakeIP := false
-				if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(ob.Target.Address) {
-					isFakeIP = true
-				}
-				if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
+				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
 					ob.RouteTarget = destination
 				} else {
 					ob.Target = destination
@@ -274,55 +280,63 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 	if !destination.IsValid() {
 		return newError("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
-	if ob == nil {
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
+	ob := &session.Outbound{
+		Target: destination,
 	}
-	ob.OriginalTarget = destination
-	ob.Target = destination
+	ctx = session.ContextWithOutbound(ctx, ob)
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
 		ctx = session.ContextWithContent(ctx, content)
 	}
 	sniffingRequest := content.SniffingRequest
-	if !sniffingRequest.Enabled {
-		d.routedDispatch(ctx, outbound, destination)
-	} else {
-		cReader := &cachedReader{
-			reader: outbound.Reader.(*pipe.Reader),
-		}
-		outbound.Reader = cReader
-		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
+	switch {
+	case !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 err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
-			domain := result.Domain()
-			newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
-			destination.Address = net.ParseAddress(domain)
-			protocol := result.Protocol()
-			if resComp, ok := result.(SnifferResultComposite); ok {
-				protocol = resComp.ProtocolForDomainResult()
-			}
-			isFakeIP := false
-			if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(ob.Target.Address) {
-				isFakeIP = true
-			}
-			if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
-				ob.RouteTarget = destination
-			} else {
-				ob.Target = destination
+			if shouldOverride(ctx, result, sniffingRequest, destination) {
+				domain := result.Domain()
+				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+				destination.Address = net.ParseAddress(domain)
+				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
+					ob.RouteTarget = destination
+				} else {
+					ob.Target = destination
+				}
 			}
 		}
-		d.routedDispatch(ctx, outbound, destination)
+		go d.routedDispatch(ctx, outbound, destination)
+	default:
+		go func() {
+			cReader := &cachedReader{
+				reader: outbound.Reader.(*pipe.Reader),
+			}
+			outbound.Reader = cReader
+			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly)
+			if err == nil {
+				content.Protocol = result.Protocol()
+			}
+			if err == nil && shouldOverride(ctx, result, sniffingRequest, destination) {
+				domain := result.Domain()
+				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+				destination.Address = net.ParseAddress(domain)
+				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
+					ob.RouteTarget = destination
+				} else {
+					ob.Target = destination
+				}
+			}
+			d.routedDispatch(ctx, outbound, destination)
+		}()
 	}
-
 	return nil
 }

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

@@ -348,7 +362,7 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw

 				cReader.Cache(payload)
 				if !payload.IsEmpty() {
-					result, err := sniffer.Sniff(ctx, payload.Bytes(), network)
+					result, err := sniffer.Sniff(ctx, payload.Bytes())
 					if err != common.ErrNoClue {
 						return result, err
 					}
@@ -367,10 +381,11 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 	}
 	return contentResult, contentErr
 }
+
 func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.Link, destination net.Destination) {
 	ob := session.OutboundFromContext(ctx)
-	if hosts, ok := d.dns.(dns.HostsLookup); ok && destination.Address.Family().IsDomain() {
-		proxied := hosts.LookupHosts(ob.Target.String())
+	if d.hosts != nil && destination.Address.Family().IsDomain() {
+		proxied := d.hosts.LookupHosts(ob.Target.String())
 		if proxied != nil {
 			ro := ob.RouteTarget == destination
 			destination.Address = *proxied
@@ -384,13 +399,9 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.

 	var handler outbound.Handler

-	routingLink := routing_session.AsRoutingContext(ctx)
-	inTag := routingLink.GetInboundTag()
-	isPickRoute := 0
 	if forcedOutboundTag := session.GetForcedOutboundTagFromContext(ctx); forcedOutboundTag != "" {
 		ctx = session.SetForcedOutboundTagToContext(ctx, "")
 		if h := d.ohm.GetHandler(forcedOutboundTag); h != nil {
-			isPickRoute = 1
 			newError("taking platform initialized detour [", forcedOutboundTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
 			handler = h
 		} else {
@@ -400,14 +411,13 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 			return
 		}
 	} else if d.router != nil {
-		if route, err := d.router.PickRoute(routingLink); err == nil {
-			outTag := route.GetOutboundTag()
-			if h := d.ohm.GetHandler(outTag); h != nil {
-				isPickRoute = 2
-				newError("taking detour [", outTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+		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))
 				handler = h
 			} else {
-				newError("non existing outTag: ", outTag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+				newError("non existing outTag: ", tag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
 			}
 		} else {
 			newError("default route for ", destination).WriteToLog(session.ExportIDToError(ctx))
@@ -427,15 +437,7 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.

 	if accessMessage := log.AccessMessageFromContext(ctx); accessMessage != nil {
 		if tag := handler.Tag(); tag != "" {
-			if inTag == "" {
-				accessMessage.Detour = tag
-			} else if isPickRoute == 1 {
-				accessMessage.Detour = inTag + " ==> " + tag
-			} else if isPickRoute == 2 {
-				accessMessage.Detour = inTag + " -> " + tag
-			} else {
-				accessMessage.Detour = inTag + " >> " + tag
-			}
+			accessMessage.Detour = tag
 		}
 		log.Record(accessMessage)
 	}
--- a/app/dispatcher/fakednssniffer.go
+++ b/app/dispatcher/fakednssniffer.go
@@ -11,16 +11,15 @@ import (
 	"github.com/xtls/xray-core/features/dns"
 )

-// newFakeDNSSniffer Creates a Fake DNS metadata sniffer
+// newFakeDNSSniffer Create a Fake DNS metadata sniffer
 func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error) {
 	var fakeDNSEngine dns.FakeDNSEngine
-	{
-		fakeDNSEngineFeat := core.MustFromContext(ctx).GetFeature((*dns.FakeDNSEngine)(nil))
-		if fakeDNSEngineFeat != nil {
-			fakeDNSEngine = fakeDNSEngineFeat.(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
@@ -85,8 +84,7 @@ func (f DNSThenOthersSniffResult) Domain() string {
 }

 func newFakeDNSThenOthers(ctx context.Context, fakeDNSSniffer protocolSnifferWithMetadata, others []protocolSnifferWithMetadata) (
-	protocolSnifferWithMetadata, error,
-) { // nolint: unparam
+	protocolSnifferWithMetadata, error) { // nolint: unparam
 	// ctx may be used in the future
 	_ = ctx
 	return protocolSnifferWithMetadata{
--- a/app/dispatcher/sniffer.go
+++ b/app/dispatcher/sniffer.go
@@ -4,10 +4,8 @@ import (
 	"context"

 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/bittorrent"
 	"github.com/xtls/xray-core/common/protocol/http"
-	"github.com/xtls/xray-core/common/protocol/quic"
 	"github.com/xtls/xray-core/common/protocol/tls"
 )

@@ -24,7 +22,6 @@ type protocolSnifferWithMetadata struct {
 	// 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
-	network         net.Network
 }

 type Sniffer struct {
@@ -34,11 +31,9 @@ type Sniffer struct {
 func NewSniffer(ctx context.Context) *Sniffer {
 	ret := &Sniffer{
 		sniffer: []protocolSnifferWithMetadata{
-			{func(c context.Context, b []byte) (SniffResult, error) { return http.SniffHTTP(b) }, false, net.Network_TCP},
-			{func(c context.Context, b []byte) (SniffResult, error) { return tls.SniffTLS(b) }, false, net.Network_TCP},
-			{func(c context.Context, b []byte) (SniffResult, error) { return bittorrent.SniffBittorrent(b) }, false, net.Network_TCP},
-			{func(c context.Context, b []byte) (SniffResult, error) { return quic.SniffQUIC(b) }, false, net.Network_UDP},
-			{func(c context.Context, b []byte) (SniffResult, error) { return bittorrent.SniffUTP(b) }, false, net.Network_UDP},
+			{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},
 		},
 	}
 	if sniffer, err := newFakeDNSSniffer(ctx); err == nil {
@@ -54,11 +49,11 @@ func NewSniffer(ctx context.Context) *Sniffer {

 var errUnknownContent = newError("unknown content")

-func (s *Sniffer) Sniff(c context.Context, payload []byte, network net.Network) (SniffResult, error) {
+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 || si.network != network {
+		if si.metadataSniffer {
 			continue
 		}
 		result, err := s(c, payload)
--- a/app/dns/config.pb.go
+++ b/app/dns/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/dns/config.proto

 package dns
@@ -134,7 +134,6 @@ type NameServer struct {
 	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"`
-	QueryStrategy     QueryStrategy                `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
 }

 func (x *NameServer) Reset() {
@@ -211,13 +210,6 @@ func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
 	return nil
 }

-func (x *NameServer) GetQueryStrategy() QueryStrategy {
-	if x != nil {
-		return x.QueryStrategy
-	}
-	return QueryStrategy_USE_IP
-}
-
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -227,14 +219,14 @@ type Config struct {
 	// the moment. A special value 'localhost' as a domain address can be set to
 	// use DNS on local system.
 	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
+	// Deprecated: Do not use.
 	NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,proto3" json:"NameServers,omitempty"`
 	// NameServer list used by this DNS client.
 	NameServer []*NameServer `protobuf:"bytes,5,rep,name=name_server,json=nameServer,proto3" json:"name_server,omitempty"`
 	// Static hosts. Domain to IP.
 	// Deprecated. Use static_hosts.
 	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
+	// Deprecated: Do not use.
 	Hosts map[string]*net.IPOrDomain `protobuf:"bytes,2,rep,name=Hosts,proto3" json:"Hosts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes
 	// (IPv6).
@@ -281,7 +273,7 @@ func (*Config) Descriptor() ([]byte, []int) {
 	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
 }

-// Deprecated: Marked as deprecated in app/dns/config.proto.
+// Deprecated: Do not use.
 func (x *Config) GetNameServers() []*net.Endpoint {
 	if x != nil {
 		return x.NameServers
@@ -296,7 +288,7 @@ func (x *Config) GetNameServer() []*NameServer {
 	return nil
 }

-// Deprecated: Marked as deprecated in app/dns/config.proto.
+// Deprecated: Do not use.
 func (x *Config) GetHosts() map[string]*net.IPOrDomain {
 	if x != nil {
 		return x.Hosts
@@ -546,7 +538,7 @@ 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,
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xee, 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,
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@@ -567,81 +559,77 @@ var file_app_dns_config_proto_rawDesc = []byte{
 	0x65, 0x73, 0x18, 0x04, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -676,20 +664,19 @@ var file_app_dns_config_proto_depIdxs = []int32{
 	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
-	1,  // 4: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	8,  // 5: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
-	2,  // 6: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
-	6,  // 7: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
-	7,  // 8: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
-	1,  // 9: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	0,  // 10: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
-	10, // 11: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
-	0,  // 12: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
-	13, // [13:13] is the sub-list for method output_type
-	13, // [13:13] is the sub-list for method input_type
-	13, // [13:13] is the sub-list for extension type_name
-	13, // [13:13] is the sub-list for extension extendee
-	0,  // [0:13] is the sub-list for field type_name
+	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
 }

 func init() { file_app_dns_config_proto_init() }
--- a/app/dns/config.proto
+++ b/app/dns/config.proto
@@ -28,7 +28,6 @@ message NameServer {
  repeated PriorityDomain prioritized_domain = 2;
  repeated xray.app.router.GeoIP geoip = 3;
  repeated OriginalRule original_rules = 4;
-  QueryStrategy query_strategy = 7;
 }

 enum DomainMatchingType {
--- a/app/dns/dns.go
+++ b/app/dns/dns.go
@@ -215,8 +215,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
 			errs = append(errs, err)
 		}
-		// 5 for RcodeRefused in miekg/dns, hardcode to reduce binary size
-		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch && err != dns.ErrEmptyResponse && dns.RCodeFromError(err) != 5 {
+		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
 			return nil, err
 		}
 	}
--- a/app/dns/dns_test.go
+++ b/app/dns/dns_test.go
@@ -13,7 +13,6 @@ import (
 	_ "github.com/xtls/xray-core/app/proxyman/outbound"
 	"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/serial"
 	"github.com/xtls/xray-core/core"
@@ -261,7 +260,7 @@ func TestUDPServer(t *testing.T) {
 			IPv6Enable: true,
 			FakeEnable: false,
 		})
-		if !errors.AllEqual(feature_dns.ErrEmptyResponse, errors.Cause(err)) {
+		if err != feature_dns.ErrEmptyResponse {
 			t.Fatal("error: ", err)
 		}
 		if len(ips) != 0 {
--- a/app/dns/dnscommon.go
+++ b/app/dns/dnscommon.go
@@ -1,22 +1,19 @@
 package dns

 import (
-	"context"
 	"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/log"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/core"
 	dns_feature "github.com/xtls/xray-core/features/dns"
-	"golang.org/x/net/dns/dnsmessage"
 )

-// Fqdn normalizes domain make sure it ends with '.'
+// Fqdn normalize domain make sure it ends with '.'
 func Fqdn(domain string) string {
 	if len(domain) > 0 && strings.HasSuffix(domain, ".") {
 		return domain
@@ -166,7 +163,7 @@ func buildReqMsgs(domain string, option dns_feature.IPOption, reqIDGen func() ui
 	return reqs
 }

-// parseResponse parses DNS answers from the returned payload
+// parseResponse parse DNS answers from the returned payload
 func parseResponse(payload []byte) (*IPRecord, error) {
 	var parser dnsmessage.Parser
 	h, err := parser.Start(payload)
@@ -181,7 +178,7 @@ func parseResponse(payload []byte) (*IPRecord, error) {
 	ipRecord := &IPRecord{
 		ReqID:  h.ID,
 		RCode:  h.RCode,
-		Expire: now.Add(time.Second * 600),
+		Expire: now.Add(time.Minute * 30),
 	}

 L:
@@ -229,19 +226,3 @@ L:

 	return ipRecord, nil
 }
-
-// toDnsContext create a new background context with parent inbound, session and dns log
-func toDnsContext(ctx context.Context, addr string) context.Context {
-	dnsCtx := core.ToBackgroundDetachedContext(ctx)
-	if inbound := session.InboundFromContext(ctx); inbound != nil {
-		dnsCtx = session.ContextWithInbound(dnsCtx, inbound)
-	}
-	dnsCtx = session.ContextWithContent(dnsCtx, session.ContentFromContext(ctx))
-	dnsCtx = log.ContextWithAccessMessage(dnsCtx, &log.AccessMessage{
-		From:   "DNS",
-		To:     addr,
-		Status: log.AccessAccepted,
-		Reason: "",
-	})
-	return dnsCtx
-}
--- a/app/dns/dnscommon_test.go
+++ b/app/dns/dnscommon_test.go
@@ -7,10 +7,11 @@ 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) {
--- a/app/dns/fakedns/fake.go
+++ b/app/dns/fakedns/fake.go
@@ -5,7 +5,6 @@ import (
 	"math"
 	"math/big"
 	gonet "net"
-	"sync"
 	"time"

 	"github.com/xtls/xray-core/common"
@@ -17,7 +16,6 @@ import (
 type Holder struct {
 	domainToIP cache.Lru
 	ipRange    *gonet.IPNet
-	mu         *sync.Mutex

 	config *FakeDnsPool
 }
@@ -51,7 +49,6 @@ func (fkdns *Holder) Start() error {
 func (fkdns *Holder) Close() error {
 	fkdns.domainToIP = nil
 	fkdns.ipRange = nil
-	fkdns.mu = nil
 	return nil
 }

@@ -70,7 +67,7 @@ func NewFakeDNSHolder() (*Holder, error) {
 }

 func NewFakeDNSHolderConfigOnly(conf *FakeDnsPool) (*Holder, error) {
-	return &Holder{nil, nil, nil, conf}, nil
+	return &Holder{nil, nil, conf}, nil
 }

 func (fkdns *Holder) initializeFromConfig() error {
@@ -92,14 +89,11 @@ func (fkdns *Holder) initialize(ipPoolCidr string, lruSize int) error {
 	}
 	fkdns.domainToIP = cache.NewLru(lruSize)
 	fkdns.ipRange = ipRange
-	fkdns.mu = new(sync.Mutex)
 	return nil
 }

-// GetFakeIPForDomain checks and generates a fake IP for a domain name
+// GetFakeIPForDomain check and generate a fake IP for a domain name
 func (fkdns *Holder) GetFakeIPForDomain(domain string) []net.Address {
-	fkdns.mu.Lock()
-	defer fkdns.mu.Unlock()
 	if v, ok := fkdns.domainToIP.Get(domain); ok {
 		return []net.Address{v.(net.Address)}
 	}
@@ -129,7 +123,7 @@ func (fkdns *Holder) GetFakeIPForDomain(domain string) []net.Address {
 	return []net.Address{ip}
 }

-// GetDomainFromFakeDNS checks if an IP is a fake IP and have corresponding domain name
+// 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 ""
--- a/app/dns/fakedns/fakedns.pb.go
+++ b/app/dns/fakedns/fakedns.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/dns/fakedns/fakedns.proto

 package fakedns
--- a/app/dns/fakedns/fakedns_test.go
+++ b/app/dns/fakedns/fakedns_test.go
@@ -1,16 +1,16 @@
 package fakedns

 import (
-	gonet "net"
-	"strconv"
 	"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"
-	"golang.org/x/sync/errgroup"
 )

 var ipPrefix = "198.1"
@@ -67,31 +67,6 @@ func TestFakeDnsHolderCreateMappingManySingleDomain(t *testing.T) {
 	assert.Equal(t, addr[0].IP().String(), addr2[0].IP().String())
 }

-func TestGetFakeIPForDomainConcurrently(t *testing.T) {
-	fkdns, err := NewFakeDNSHolder()
-	common.Must(err)
-
-	total := 200
-	addr := make([][]net.Address, total)
-	var errg errgroup.Group
-	for i := 0; i < total; i++ {
-		errg.Go(testGetFakeIP(i, addr, fkdns))
-	}
-	errg.Wait()
-	for i := 0; i < total; i++ {
-		for j := i + 1; j < total; j++ {
-			assert.NotEqual(t, addr[i][0].IP().String(), addr[j][0].IP().String())
-		}
-	}
-}
-
-func testGetFakeIP(index int, addr [][]net.Address, fkdns *Holder) func() error {
-	return func() error {
-		addr[index] = fkdns.GetFakeIPForDomain("fakednstest" + strconv.Itoa(index) + ".example.com")
-		return nil
-	}
-}
-
 func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
 	fkdns, err := NewFakeDNSHolderConfigOnly(&FakeDnsPool{
 		IpPool:  dns.FakeIPv4Pool,
@@ -173,31 +148,31 @@ func TestFakeDNSMulti(t *testing.T) {
 	})

 	t.Run("allocateTwoAddressForTwoPool", func(t *testing.T) {
-		address := fakeMulti.GetFakeIPForDomain("fakednstest.example.com")
+		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.example.com", domain)
+			assert.Equal(t, "fakednstest.v2fly.org", domain)
 		})
 		t.Run("eachOfThemShouldResolve:1", func(t *testing.T) {
 			domain := fakeMulti.GetDomainFromFakeDNS(address[1])
-			assert.Equal(t, "fakednstest.example.com", domain)
+			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.example.com", true, false)
+			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.example.com", false, true)
+			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.example.com", true, true)
+			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/nameserver.go
+++ b/app/dns/nameserver.go
@@ -35,7 +35,7 @@ type Client struct {
 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, queryStrategy QueryStrategy) (Server, error) {
+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 {
@@ -45,15 +45,15 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 		case strings.EqualFold(u.String(), "localhost"):
 			return NewLocalNameServer(), nil
 		case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
-			return NewDoHNameServer(u, dispatcher, queryStrategy)
+			return NewDoHNameServer(u, dispatcher)
 		case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
-			return NewDoHLocalNameServer(u, queryStrategy), nil
+			return NewDoHLocalNameServer(u), nil
 		case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
-			return NewQUICNameServer(u, queryStrategy)
+			return NewQUICNameServer(u)
 		case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
-			return NewTCPNameServer(u, dispatcher, queryStrategy)
+			return NewTCPNameServer(u, dispatcher)
 		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
-			return NewTCPLocalNameServer(u, queryStrategy)
+			return NewTCPLocalNameServer(u)
 		case strings.EqualFold(u.String(), "fakedns"):
 			return NewFakeDNSServer(), nil
 		}
@@ -68,19 +68,12 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 }

 // 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) {
+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, ns.GetQueryStrategy())
+		server, err := NewServer(ns.Address.AsDestination(), dispatcher)
 		if err != nil {
 			return newError("failed to create nameserver").Base(err).AtWarning()
 		}
@@ -167,7 +160,7 @@ func NewClient(
 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, QueryStrategy_USE_IP)
+		server, err := NewServer(endpoint.AsDestination(), dispatcher)
 		if err != nil {
 			return newError("failed to create nameserver").Base(err).AtWarning()
 		}
@@ -193,7 +186,7 @@ func (c *Client) Name() string {
 	return c.server.Name()
 }

-// QueryIP sends DNS query to the name server with the client's IP.
+// 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)
@@ -225,24 +218,3 @@ func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error)
 	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
 	return newIps, nil
 }
-
-func ResolveIpOptionOverride(queryStrategy QueryStrategy, ipOption dns.IPOption) dns.IPOption {
-	switch queryStrategy {
-	case QueryStrategy_USE_IP:
-		return ipOption
-	case QueryStrategy_USE_IP4:
-		return dns.IPOption{
-			IPv4Enable: ipOption.IPv4Enable,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}
-	case QueryStrategy_USE_IP6:
-		return dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: ipOption.IPv6Enable,
-			FakeEnable: false,
-		}
-	default:
-		return ipOption
-	}
-}
--- a/app/dns/nameserver_doh.go
+++ b/app/dns/nameserver_doh.go
@@ -11,6 +11,8 @@ 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"
@@ -22,7 +24,6 @@ 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,
@@ -31,20 +32,19 @@ import (
 type DoHNameServer struct {
 	dispatcher routing.Dispatcher
 	sync.RWMutex
-	ips           map[string]*record
-	pub           *pubsub.Service
-	cleanup       *task.Periodic
-	reqID         uint32
-	httpClient    *http.Client
-	dohURL        string
-	name          string
-	queryStrategy QueryStrategy
+	ips        map[string]*record
+	pub        *pubsub.Service
+	cleanup    *task.Periodic
+	reqID      uint32
+	httpClient *http.Client
+	dohURL     string
+	name       string
 }

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

 	s.dispatcher = dispatcher
 	tr := &http.Transport{
@@ -53,11 +53,23 @@ func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy
 		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
 			}
-			link, err := s.dispatcher.Dispatch(toDnsContext(ctx, s.dohURL), dest)
+
+			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()
@@ -91,9 +103,9 @@ func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy
 }

 // NewDoHLocalNameServer creates DOH client object for local resolving
-func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameServer {
+func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
 	url.Scheme = "https"
-	s := baseDOHNameServer(url, "DOHL", queryStrategy)
+	s := baseDOHNameServer(url, "DOHL")
 	tr := &http.Transport{
 		IdleConnTimeout:   90 * time.Second,
 		ForceAttemptHTTP2: true,
@@ -102,9 +114,9 @@ func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameSe
 			if err != nil {
 				return nil, err
 			}
-			conn, err := internet.DialSystem(ctx, dest, nil)
+			conn, err := internet.DialSystemDNS(ctx, dest, nil)
 			log.Record(&log.AccessMessage{
-				From:   "DNS",
+				From:   "DoH",
 				To:     s.dohURL,
 				Status: log.AccessAccepted,
 				Detour: "local",
@@ -123,13 +135,12 @@ func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameSe
 	return s
 }

-func baseDOHNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) *DoHNameServer {
+func baseDOHNameServer(url *url.URL, prefix string) *DoHNameServer {
 	s := &DoHNameServer{
-		ips:           make(map[string]*record),
-		pub:           pubsub.NewService(),
-		name:          prefix + "//" + url.Host,
-		dohURL:        url.String(),
-		queryStrategy: queryStrategy,
+		ips:    make(map[string]*record),
+		pub:    pubsub.NewService(),
+		name:   prefix + "//" + url.Host,
+		dohURL: url.String(),
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -355,10 +366,6 @@ func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 // 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
 	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}

 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
--- a/app/dns/nameserver_doh_test.go
+++ b/app/dns/nameserver_doh_test.go
@@ -7,6 +7,7 @@ import (
 	"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"
@@ -17,7 +18,7 @@ func TestDOHNameServer(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)

-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	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,
@@ -34,7 +35,7 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)

-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	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,
@@ -57,49 +58,3 @@ func TestDOHNameServerWithCache(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestDOHNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP4)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestDOHNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP6)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}
--- a/app/dns/nameserver_local.go
+++ b/app/dns/nameserver_local.go
@@ -3,11 +3,10 @@ package dns
 import (
 	"context"
 	"strings"
-	"time"

-	"github.com/xtls/xray-core/common/log"
-	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
+
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns/localdns"
 )

@@ -20,7 +19,6 @@ 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) {
-	start := time.Now()
 	ips, err = s.client.LookupIP(domain, option)

 	if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) {
@@ -29,7 +27,6 @@ func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, op

 	if len(ips) > 0 {
 		newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
-		log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
 	}

 	return
--- a/app/dns/nameserver_local_test.go
+++ b/app/dns/nameserver_local_test.go
@@ -5,9 +5,10 @@ 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/common/net"
 	"github.com/xtls/xray-core/features/dns"
 )

--- a/app/dns/nameserver_quic.go
+++ b/app/dns/nameserver_quic.go
@@ -7,10 +7,9 @@ import (
 	"sync/atomic"
 	"time"

-	"github.com/quic-go/quic-go"
+	"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/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
@@ -31,18 +30,17 @@ 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
-	connection    quic.Connection
-	queryStrategy QueryStrategy
+	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, queryStrategy QueryStrategy) (*QUICNameServer, error) {
+func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
 	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()

 	var err error
@@ -56,11 +54,10 @@ func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServ
 	dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)

 	s := &QUICNameServer{
-		ips:           make(map[string]*record),
-		pub:           pubsub.NewService(),
-		name:          url.String(),
-		destination:   &dest,
-		queryStrategy: queryStrategy,
+		ips:         make(map[string]*record),
+		pub:         pubsub.NewService(),
+		name:        url.String(),
+		destination: &dest,
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -196,7 +193,7 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP

 			conn, err := s.openStream(dnsCtx)
 			if err != nil {
-				newError("failed to open quic connection").Base(err).AtError().WriteToLog()
+				newError("failed to open quic session").Base(err).AtError().WriteToLog()
 				return
 			}

@@ -271,10 +268,6 @@ func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOp
 // 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)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}

 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
@@ -282,7 +275,6 @@ func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP ne
 		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
 		}
 	}
@@ -314,12 +306,10 @@ func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP ne
 		close(done)
 	}()
 	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()

 	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
 		}

@@ -331,7 +321,7 @@ func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP ne
 	}
 }

-func isActive(s quic.Connection) bool {
+func isActive(s quic.Session) bool {
 	select {
 	case <-s.Context().Done():
 		return false
@@ -340,17 +330,17 @@ func isActive(s quic.Connection) bool {
 	}
 }

-func (s *QUICNameServer) getConnection() (quic.Connection, error) {
-	var conn quic.Connection
+func (s *QUICNameServer) getSession() (quic.Session, error) {
+	var session quic.Session
 	s.RLock()
-	conn = s.connection
-	if conn != nil && isActive(conn) {
+	session = s.session
+	if session != nil && isActive(session) {
 		s.RUnlock()
-		return conn, nil
+		return session, nil
 	}
-	if conn != nil {
-		// we're recreating the connection, let's create a new one
-		_ = conn.CloseWithError(0, "")
+	if session != nil {
+		// we're recreating the session, let's create a new one
+		_ = session.CloseWithError(0, "")
 	}
 	s.RUnlock()

@@ -358,48 +348,42 @@ func (s *QUICNameServer) getConnection() (quic.Connection, error) {
 	defer s.Unlock()

 	var err error
-	conn, err = s.openConnection()
+	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 connection.
-		conn, err = s.openConnection()
+		// it fails to open the QUIC session.
+		session, err = s.openSession()
 		if err != nil {
 			return nil, err
 		}
 	}
-	s.connection = conn
-	return conn, nil
+	s.session = session
+	return session, nil
 }

-func (s *QUICNameServer) openConnection() (quic.Connection, error) {
+func (s *QUICNameServer) openSession() (quic.Session, error) {
 	tlsConfig := tls.Config{}
 	quicConfig := &quic.Config{
 		HandshakeIdleTimeout: handshakeTimeout,
 	}
-	tlsConfig.ServerName = s.destination.Address.String()
-	conn, err := quic.DialAddr(context.Background(), s.destination.NetAddr(), tlsConfig.GetTLSConfig(tls.WithNextProto("http/1.1", http2.NextProtoTLS, NextProtoDQ)), quicConfig)
-	log.Record(&log.AccessMessage{
-		From:   "DNS",
-		To:     s.destination,
-		Status: log.AccessAccepted,
-		Detour: "local",
-	})
+
+	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 conn, nil
+	return session, nil
 }

 func (s *QUICNameServer) openStream(ctx context.Context) (quic.Stream, error) {
-	conn, err := s.getConnection()
+	session, err := s.getSession()
 	if err != nil {
 		return nil, err
 	}

 	// open a new stream
-	return conn.OpenStreamSync(ctx)
+	return session.OpenStreamSync(ctx)
 }
--- a/app/dns/nameserver_quic_test.go
+++ b/app/dns/nameserver_quic_test.go
@@ -6,17 +6,19 @@ import (
 	"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"
-	"github.com/xtls/xray-core/features/dns"
 )

 func TestQUICNameServer(t *testing.T) {
 	url, err := url.Parse("quic://dns.adguard.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP)
+	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{
@@ -40,49 +42,3 @@ func TestQUICNameServer(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestQUICNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
-	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP4)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestQUICNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
-	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP6)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}
--- a/app/dns/nameserver_tcp.go
+++ b/app/dns/nameserver_tcp.go
@@ -9,9 +9,10 @@ import (
 	"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/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
@@ -21,35 +22,29 @@ 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"
 )

 // 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)
-	queryStrategy QueryStrategy
+	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,
-	queryStrategy QueryStrategy,
-) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCP", queryStrategy)
+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(toDnsContext(ctx, s.destination.String()), *s.destination)
+		link, err := dispatcher.Dispatch(ctx, *s.destination)
 		if err != nil {
 			return nil, err
 		}
@@ -64,8 +59,8 @@ func NewTCPNameServer(
 }

 // NewTCPLocalNameServer creates DNS over TCP client object for local resolving
-func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCPL", queryStrategy)
+func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
+	s, err := baseTCPNameServer(url, "TCPL")
 	if err != nil {
 		return nil, err
 	}
@@ -77,22 +72,22 @@ func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameS
 	return s, nil
 }

-func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) (*TCPNameServer, error) {
+func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
+	var err error
 	port := net.Port(53)
 	if url.Port() != "" {
-		var err error
-		if port, err = net.PortFromString(url.Port()); err != nil {
+		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(),
-		queryStrategy: queryStrategy,
+		destination: &dest,
+		ips:         make(map[string]*record),
+		pub:         pubsub.NewService(),
+		name:        prefix + "//" + dest.NetAddr(),
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -313,10 +308,6 @@ func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 // 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)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}

 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
@@ -324,7 +315,6 @@ func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net
 		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
 		}
 	}
@@ -356,12 +346,10 @@ func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net
 		close(done)
 	}()
 	s.sendQuery(ctx, fqdn, clientIP, option)
-	start := time.Now()

 	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/nameserver_tcp_test.go
+++ b/app/dns/nameserver_tcp_test.go
@@ -7,6 +7,7 @@ import (
 	"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"
@@ -16,7 +17,7 @@ import (
 func TestTCPLocalNameServer(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	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{
@@ -33,7 +34,7 @@ func TestTCPLocalNameServer(t *testing.T) {
 func TestTCPLocalNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	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{
@@ -57,51 +58,3 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestTCPLocalNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP4)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestTCPLocalNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP6)
-	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")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}
--- a/app/dns/nameserver_udp.go
+++ b/app/dns/nameserver_udp.go
@@ -7,6 +7,8 @@ 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"
@@ -18,7 +20,6 @@ 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.
@@ -194,7 +195,21 @@ func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, client
 	for _, req := range reqs {
 		s.addPendingRequest(req)
 		b, _ := dns.PackMessage(req.msg)
-		s.udpServer.Dispatch(toDnsContext(ctx, s.address.String()), *s.address, b)
+		udpCtx := context.Background()
+		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)
 	}
 }

--- a/app/log/command/command.go
+++ b/app/log/command/command.go
@@ -5,10 +5,11 @@ package command
 import (
 	"context"

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

 type LoggerServer struct {
--- a/app/log/command/config.pb.go
+++ b/app/log/command/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/log/command/config.proto

 package command
--- a/app/log/command/config_grpc.pb.go
+++ b/app/log/command/config_grpc.pb.go
@@ -1,8 +1,4 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
-// source: app/log/command/config.proto

 package command

@@ -18,10 +14,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7

-const (
-	LoggerService_RestartLogger_FullMethodName = "/xray.app.log.command.LoggerService/RestartLogger"
-)
-
 // LoggerServiceClient is the client API for LoggerService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -39,7 +31,7 @@ func NewLoggerServiceClient(cc grpc.ClientConnInterface) LoggerServiceClient {

 func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLoggerRequest, opts ...grpc.CallOption) (*RestartLoggerResponse, error) {
 	out := new(RestartLoggerResponse)
-	err := c.cc.Invoke(ctx, LoggerService_RestartLogger_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.log.command.LoggerService/RestartLogger", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,7 +76,7 @@ func _LoggerService_RestartLogger_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: LoggerService_RestartLogger_FullMethodName,
+		FullMethod: "/xray.app.log.command.LoggerService/RestartLogger",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(LoggerServiceServer).RestartLogger(ctx, req.(*RestartLoggerRequest))
--- a/app/log/config.pb.go
+++ b/app/log/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/log/config.proto

 package log
--- a/app/log/log_creator.go
+++ b/app/log/log_creator.go
@@ -2,7 +2,7 @@ package log

 import (
 	"sync"
-
+	
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/log"
 )
--- a/app/log/log_test.go
+++ b/app/log/log_test.go
@@ -5,6 +5,7 @@ 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/metrics/config.pb.go
+++ b/app/metrics/config.pb.go
@@ -1,149 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
-// source: app/metrics/config.proto
-
-package metrics
-
-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)
-)
-
-// Config is the settings for metrics.
-type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// Tag of the outbound handler that handles metrics http connections.
-	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
-}
-
-func (x *Config) Reset() {
-	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_metrics_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Config) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Config) ProtoMessage() {}
-
-func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_metrics_config_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 Config.ProtoReflect.Descriptor instead.
-func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_metrics_config_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Config) GetTag() string {
-	if x != nil {
-		return x.Tag
-	}
-	return ""
-}
-
-var File_app_metrics_config_proto protoreflect.FileDescriptor
-
-var file_app_metrics_config_proto_rawDesc = []byte{
-	0x0a, 0x18, 0x61, 0x70, 0x70, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x2f, 0x63, 0x6f,
-	0x6e, 0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x10, 0x78, 0x72, 0x61, 0x79,
-	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x22, 0x1a, 0x0a, 0x06,
-	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x42, 0x52, 0x0a, 0x14, 0x63, 0x6f, 0x6d, 0x2e,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73,
-	0x50, 0x01, 0x5a, 0x25, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78,
-	0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70,
-	0x70, 0x2f, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0xaa, 0x02, 0x10, 0x58, 0x72, 0x61, 0x79,
-	0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x62, 0x06, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_app_metrics_config_proto_rawDescOnce sync.Once
-	file_app_metrics_config_proto_rawDescData = file_app_metrics_config_proto_rawDesc
-)
-
-func file_app_metrics_config_proto_rawDescGZIP() []byte {
-	file_app_metrics_config_proto_rawDescOnce.Do(func() {
-		file_app_metrics_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_metrics_config_proto_rawDescData)
-	})
-	return file_app_metrics_config_proto_rawDescData
-}
-
-var file_app_metrics_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_app_metrics_config_proto_goTypes = []interface{}{
-	(*Config)(nil), // 0: xray.app.metrics.Config
-}
-var file_app_metrics_config_proto_depIdxs = []int32{
-	0, // [0:0] is the sub-list for method output_type
-	0, // [0:0] is the sub-list for method input_type
-	0, // [0:0] is the sub-list for extension type_name
-	0, // [0:0] is the sub-list for extension extendee
-	0, // [0:0] is the sub-list for field type_name
-}
-
-func init() { file_app_metrics_config_proto_init() }
-func file_app_metrics_config_proto_init() {
-	if File_app_metrics_config_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_metrics_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); 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_metrics_config_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   1,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_app_metrics_config_proto_goTypes,
-		DependencyIndexes: file_app_metrics_config_proto_depIdxs,
-		MessageInfos:      file_app_metrics_config_proto_msgTypes,
-	}.Build()
-	File_app_metrics_config_proto = out.File
-	file_app_metrics_config_proto_rawDesc = nil
-	file_app_metrics_config_proto_goTypes = nil
-	file_app_metrics_config_proto_depIdxs = nil
-}
--- a/app/metrics/config.proto
+++ b/app/metrics/config.proto
@@ -1,13 +0,0 @@
-syntax = "proto3";
-
-package xray.app.metrics;
-option csharp_namespace = "Xray.App.Metrics";
-option go_package = "github.com/xtls/xray-core/app/metrics";
-option java_package = "com.xray.app.metrics";
-option java_multiple_files = true;
-
-// Config is the settings for metrics.
-message Config {
-  // Tag of the outbound handler that handles metrics http connections.
-  string tag = 1;
-}
--- a/app/metrics/metrics.go
+++ b/app/metrics/metrics.go
@@ -1,118 +0,0 @@
-package metrics
-
-import (
-	"context"
-	"expvar"
-	"net/http"
-	_ "net/http/pprof"
-	"strings"
-
-	"github.com/xtls/xray-core/app/observatory"
-	"github.com/xtls/xray-core/app/stats"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/signal/done"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/extension"
-	"github.com/xtls/xray-core/features/outbound"
-	feature_stats "github.com/xtls/xray-core/features/stats"
-)
-
-type MetricsHandler struct {
-	ohm          outbound.Manager
-	statsManager feature_stats.Manager
-	observatory  extension.Observatory
-	tag          string
-}
-
-// NewMetricsHandler creates a new MetricsHandler based on the given config.
-func NewMetricsHandler(ctx context.Context, config *Config) (*MetricsHandler, error) {
-	c := &MetricsHandler{
-		tag: config.Tag,
-	}
-	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager, sm feature_stats.Manager) {
-		c.statsManager = sm
-		c.ohm = om
-	}))
-	expvar.Publish("stats", expvar.Func(func() interface{} {
-		manager, ok := c.statsManager.(*stats.Manager)
-		if !ok {
-			return nil
-		}
-		resp := map[string]map[string]map[string]int64{
-			"inbound":  {},
-			"outbound": {},
-			"user":     {},
-		}
-		manager.VisitCounters(func(name string, counter feature_stats.Counter) bool {
-			nameSplit := strings.Split(name, ">>>")
-			typeName, tagOrUser, direction := nameSplit[0], nameSplit[1], nameSplit[3]
-			if item, found := resp[typeName][tagOrUser]; found {
-				item[direction] = counter.Value()
-			} else {
-				resp[typeName][tagOrUser] = map[string]int64{
-					direction: counter.Value(),
-				}
-			}
-			return true
-		})
-		return resp
-	}))
-	expvar.Publish("observatory", expvar.Func(func() interface{} {
-		if c.observatory == nil {
-			common.Must(core.RequireFeatures(ctx, func(observatory extension.Observatory) error {
-				c.observatory = observatory
-				return nil
-			}))
-			if c.observatory == nil {
-				return nil
-			}
-		}
-		resp := map[string]*observatory.OutboundStatus{}
-		if o, err := c.observatory.GetObservation(context.Background()); err != nil {
-			return err
-		} else {
-			for _, x := range o.(*observatory.ObservationResult).GetStatus() {
-				resp[x.OutboundTag] = x
-			}
-		}
-		return resp
-	}))
-	return c, nil
-}
-
-func (p *MetricsHandler) Type() interface{} {
-	return (*MetricsHandler)(nil)
-}
-
-func (p *MetricsHandler) Start() error {
-	listener := &OutboundListener{
-		buffer: make(chan net.Conn, 4),
-		done:   done.New(),
-	}
-
-	go func() {
-		if err := http.Serve(listener, http.DefaultServeMux); err != nil {
-			newError("failed to start metrics server").Base(err).AtError().WriteToLog()
-		}
-	}()
-
-	if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
-		newError("failed to remove existing handler").WriteToLog()
-	}
-
-	return p.ohm.AddHandler(context.Background(), &Outbound{
-		tag:      p.tag,
-		listener: listener,
-	})
-}
-
-func (p *MetricsHandler) Close() error {
-	return nil
-}
-
-func init() {
-	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
-		return NewMetricsHandler(ctx, cfg.(*Config))
-	}))
-}
--- a/app/metrics/outbound.go
+++ b/app/metrics/outbound.go
@@ -1,109 +0,0 @@
-package metrics
-
-import (
-	"context"
-	"sync"
-
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/net/cnc"
-	"github.com/xtls/xray-core/common/signal/done"
-	"github.com/xtls/xray-core/transport"
-)
-
-// OutboundListener is a net.Listener for listening metrics http connections.
-type OutboundListener struct {
-	buffer chan net.Conn
-	done   *done.Instance
-}
-
-func (l *OutboundListener) add(conn net.Conn) {
-	select {
-	case l.buffer <- conn:
-	case <-l.done.Wait():
-		conn.Close()
-	default:
-		conn.Close()
-	}
-}
-
-// Accept implements net.Listener.
-func (l *OutboundListener) Accept() (net.Conn, error) {
-	select {
-	case <-l.done.Wait():
-		return nil, newError("listen closed")
-	case c := <-l.buffer:
-		return c, nil
-	}
-}
-
-// Close implement net.Listener.
-func (l *OutboundListener) Close() error {
-	common.Must(l.done.Close())
-L:
-	for {
-		select {
-		case c := <-l.buffer:
-			c.Close()
-		default:
-			break L
-		}
-	}
-	return nil
-}
-
-// Addr implements net.Listener.
-func (l *OutboundListener) Addr() net.Addr {
-	return &net.TCPAddr{
-		IP:   net.IP{0, 0, 0, 0},
-		Port: 0,
-	}
-}
-
-// Outbound is an outbound.Handler that handles metrics http connections.
-type Outbound struct {
-	tag      string
-	listener *OutboundListener
-	access   sync.RWMutex
-	closed   bool
-}
-
-// Dispatch implements outbound.Handler.
-func (co *Outbound) Dispatch(ctx context.Context, link *transport.Link) {
-	co.access.RLock()
-
-	if co.closed {
-		common.Interrupt(link.Reader)
-		common.Interrupt(link.Writer)
-		co.access.RUnlock()
-		return
-	}
-
-	closeSignal := done.New()
-	c := cnc.NewConnection(cnc.ConnectionInputMulti(link.Writer), cnc.ConnectionOutputMulti(link.Reader), cnc.ConnectionOnClose(closeSignal))
-	co.listener.add(c)
-	co.access.RUnlock()
-	<-closeSignal.Wait()
-}
-
-// Tag implements outbound.Handler.
-func (co *Outbound) Tag() string {
-	return co.tag
-}
-
-// Start implements common.Runnable.
-func (co *Outbound) Start() error {
-	co.access.Lock()
-	co.closed = false
-	co.access.Unlock()
-	return nil
-}
-
-// Close implements common.Closable.
-func (co *Outbound) Close() error {
-	co.access.Lock()
-	defer co.access.Unlock()
-
-	co.closed = true
-	return co.listener.Close()
-}
--- a/app/observatory/burst/burst.go
+++ b/app/observatory/burst/burst.go
@@ -1,14 +0,0 @@
-package burst
-
-import (
-	"math"
-	"time"
-)
-
-//go:generate go run github.com/v2fly/v2ray-core/v4/common/errors/errorgen
-
-const (
-	rttFailed = time.Duration(math.MaxInt64 - iota)
-	rttUntested
-	rttUnqualified
-)
--- a/app/observatory/burst/burstobserver.go
+++ b/app/observatory/burst/burstobserver.go
@@ -1,108 +0,0 @@
-package burst
-
-import (
-	"context"
-	
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/app/observatory"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/signal/done"
-	"github.com/xtls/xray-core/features/extension"
-	"github.com/xtls/xray-core/features/outbound"
-	"google.golang.org/protobuf/proto"
-	"sync"
-)
-
-type Observer struct {
-	config *Config
-	ctx    context.Context
-
-	statusLock sync.Mutex
-	hp         *HealthPing
-
-	finished *done.Instance
-
-	ohm outbound.Manager
-}
-
-func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
-	return &observatory.ObservationResult{Status: o.createResult()}, nil
-}
-
-func (o *Observer) createResult() []*observatory.OutboundStatus {
-	var result []*observatory.OutboundStatus
-	o.hp.access.Lock()
-	defer o.hp.access.Unlock()
-	for name, value := range o.hp.Results {
-		status := observatory.OutboundStatus{
-			Alive:           value.getStatistics().All != value.getStatistics().Fail,
-			Delay:           value.getStatistics().Average.Milliseconds(),
-			LastErrorReason: "",
-			OutboundTag:     name,
-			LastSeenTime:    0,
-			LastTryTime:     0,
-			HealthPing: &observatory.HealthPingMeasurementResult{
-				All:       int64(value.getStatistics().All),
-				Fail:      int64(value.getStatistics().Fail),
-				Deviation: int64(value.getStatistics().Deviation),
-				Average:   int64(value.getStatistics().Average),
-				Max:       int64(value.getStatistics().Max),
-				Min:       int64(value.getStatistics().Min),
-			},
-		}
-		result = append(result, &status)
-	}
-	return result
-}
-
-func (o *Observer) Type() interface{} {
-	return extension.ObservatoryType()
-}
-
-func (o *Observer) Start() error {
-	if o.config != nil && len(o.config.SubjectSelector) != 0 {
-		o.finished = done.New()
-		o.hp.StartScheduler(func() ([]string, error) {
-			hs, ok := o.ohm.(outbound.HandlerSelector)
-			if !ok {
-
-				return nil, newError("outbound.Manager is not a HandlerSelector")
-			}
-
-			outbounds := hs.Select(o.config.SubjectSelector)
-			return outbounds, nil
-		})
-	}
-	return nil
-}
-
-func (o *Observer) Close() error {
-	if o.finished != nil {
-		o.hp.StopScheduler()
-		return o.finished.Close()
-	}
-	return nil
-}
-
-func New(ctx context.Context, config *Config) (*Observer, error) {
-	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
-		outboundManager = om
-	})
-	if err != nil {
-		return nil, newError("Cannot get depended features").Base(err)
-	}
-	hp := NewHealthPing(ctx, config.PingConfig)
-	return &Observer{
-		config: config,
-		ctx:    ctx,
-		ohm:    outboundManager,
-		hp:     hp,
-	}, nil
-}
-
-func init() {
-	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
-		return New(ctx, config.(*Config))
-	}))
-}
--- a/app/observatory/burst/config.pb.go
+++ b/app/observatory/burst/config.pb.go
@@ -1,276 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
-// source: app/observatory/burst/config.proto
-
-package burst
-
-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 Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// @Document The selectors for outbound under observation
-	SubjectSelector []string          `protobuf:"bytes,2,rep,name=subject_selector,json=subjectSelector,proto3" json:"subject_selector,omitempty"`
-	PingConfig      *HealthPingConfig `protobuf:"bytes,3,opt,name=ping_config,json=pingConfig,proto3" json:"ping_config,omitempty"`
-}
-
-func (x *Config) Reset() {
-	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_burst_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Config) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Config) ProtoMessage() {}
-
-func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_burst_config_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 Config.ProtoReflect.Descriptor instead.
-func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_observatory_burst_config_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Config) GetSubjectSelector() []string {
-	if x != nil {
-		return x.SubjectSelector
-	}
-	return nil
-}
-
-func (x *Config) GetPingConfig() *HealthPingConfig {
-	if x != nil {
-		return x.PingConfig
-	}
-	return nil
-}
-
-type HealthPingConfig struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// destination url, need 204 for success return
-	// default https://connectivitycheck.gstatic.com/generate_204
-	Destination string `protobuf:"bytes,1,opt,name=destination,proto3" json:"destination,omitempty"`
-	// connectivity check url
-	Connectivity string `protobuf:"bytes,2,opt,name=connectivity,proto3" json:"connectivity,omitempty"`
-	// health check interval, int64 values of time.Duration
-	Interval int64 `protobuf:"varint,3,opt,name=interval,proto3" json:"interval,omitempty"`
-	// sampling count is the amount of recent ping results which are kept for calculation
-	SamplingCount int32 `protobuf:"varint,4,opt,name=samplingCount,proto3" json:"samplingCount,omitempty"`
-	// ping timeout, int64 values of time.Duration
-	Timeout int64 `protobuf:"varint,5,opt,name=timeout,proto3" json:"timeout,omitempty"`
-}
-
-func (x *HealthPingConfig) Reset() {
-	*x = HealthPingConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_burst_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *HealthPingConfig) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*HealthPingConfig) ProtoMessage() {}
-
-func (x *HealthPingConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_burst_config_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 HealthPingConfig.ProtoReflect.Descriptor instead.
-func (*HealthPingConfig) Descriptor() ([]byte, []int) {
-	return file_app_observatory_burst_config_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *HealthPingConfig) GetDestination() string {
-	if x != nil {
-		return x.Destination
-	}
-	return ""
-}
-
-func (x *HealthPingConfig) GetConnectivity() string {
-	if x != nil {
-		return x.Connectivity
-	}
-	return ""
-}
-
-func (x *HealthPingConfig) GetInterval() int64 {
-	if x != nil {
-		return x.Interval
-	}
-	return 0
-}
-
-func (x *HealthPingConfig) GetSamplingCount() int32 {
-	if x != nil {
-		return x.SamplingCount
-	}
-	return 0
-}
-
-func (x *HealthPingConfig) GetTimeout() int64 {
-	if x != nil {
-		return x.Timeout
-	}
-	return 0
-}
-
-var File_app_observatory_burst_config_proto protoreflect.FileDescriptor
-
-var file_app_observatory_burst_config_proto_rawDesc = []byte{
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-}
-
-var (
-	file_app_observatory_burst_config_proto_rawDescOnce sync.Once
-	file_app_observatory_burst_config_proto_rawDescData = file_app_observatory_burst_config_proto_rawDesc
-)
-
-func file_app_observatory_burst_config_proto_rawDescGZIP() []byte {
-	file_app_observatory_burst_config_proto_rawDescOnce.Do(func() {
-		file_app_observatory_burst_config_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_observatory_burst_config_proto_rawDescData)
-	})
-	return file_app_observatory_burst_config_proto_rawDescData
-}
-
-var file_app_observatory_burst_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_observatory_burst_config_proto_goTypes = []interface{}{
-	(*Config)(nil),           // 0: xray.core.app.observatory.burst.Config
-	(*HealthPingConfig)(nil), // 1: xray.core.app.observatory.burst.HealthPingConfig
-}
-var file_app_observatory_burst_config_proto_depIdxs = []int32{
-	1, // 0: xray.core.app.observatory.burst.Config.ping_config:type_name -> xray.core.app.observatory.burst.HealthPingConfig
-	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_observatory_burst_config_proto_init() }
-func file_app_observatory_burst_config_proto_init() {
-	if File_app_observatory_burst_config_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_burst_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_burst_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HealthPingConfig); 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_observatory_burst_config_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   2,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_app_observatory_burst_config_proto_goTypes,
-		DependencyIndexes: file_app_observatory_burst_config_proto_depIdxs,
-		MessageInfos:      file_app_observatory_burst_config_proto_msgTypes,
-	}.Build()
-	File_app_observatory_burst_config_proto = out.File
-	file_app_observatory_burst_config_proto_rawDesc = nil
-	file_app_observatory_burst_config_proto_goTypes = nil
-	file_app_observatory_burst_config_proto_depIdxs = nil
-}
--- a/app/observatory/burst/config.proto
+++ b/app/observatory/burst/config.proto
@@ -1,29 +0,0 @@
-syntax = "proto3";
-
-package xray.core.app.observatory.burst;
-option csharp_namespace = "Xray.App.Observatory.Burst";
-option go_package = "github.com/xtls/xray-core/app/observatory/burst";
-option java_package = "com.xray.app.observatory.burst";
-option java_multiple_files = true;
-
-message Config {
-  /* @Document The selectors for outbound under observation
-  */
-  repeated string subject_selector = 2;
-
-  HealthPingConfig ping_config = 3;
-}
-
-message HealthPingConfig {
-  // destination url, need 204 for success return
-  // default https://connectivitycheck.gstatic.com/generate_204
-  string destination = 1;
-  // connectivity check url
-  string connectivity = 2;
-  // health check interval, int64 values of time.Duration
-  int64 interval = 3;
-  // sampling count is the amount of recent ping results which are kept for calculation
-  int32 samplingCount = 4;
-  // ping timeout, int64 values of time.Duration
-  int64 timeout = 5;
-}
--- a/app/observatory/burst/errors.generated.go
+++ b/app/observatory/burst/errors.generated.go
@@ -1,9 +0,0 @@
-package burst
-
-import "github.com/xtls/xray-core/common/errors"
-
-type errPathObjHolder struct{}
-
-func newError(values ...interface{}) *errors.Error {
-	return errors.New(values...).WithPathObj(errPathObjHolder{})
-}
--- a/app/observatory/burst/healthping.go
+++ b/app/observatory/burst/healthping.go
@@ -1,244 +0,0 @@
-package burst
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/xtls/xray-core/common/dice"
-)
-
-// HealthPingSettings holds settings for health Checker
-type HealthPingSettings struct {
-	Destination   string        `json:"destination"`
-	Connectivity  string        `json:"connectivity"`
-	Interval      time.Duration `json:"interval"`
-	SamplingCount int           `json:"sampling"`
-	Timeout       time.Duration `json:"timeout"`
-}
-
-// HealthPing is the health checker for balancers
-type HealthPing struct {
-	ctx         context.Context
-	access      sync.Mutex
-	ticker      *time.Ticker
-	tickerClose chan struct{}
-
-	Settings *HealthPingSettings
-	Results  map[string]*HealthPingRTTS
-}
-
-// NewHealthPing creates a new HealthPing with settings
-func NewHealthPing(ctx context.Context, config *HealthPingConfig) *HealthPing {
-	settings := &HealthPingSettings{}
-	if config != nil {
-		settings = &HealthPingSettings{
-			Connectivity:  strings.TrimSpace(config.Connectivity),
-			Destination:   strings.TrimSpace(config.Destination),
-			Interval:      time.Duration(config.Interval),
-			SamplingCount: int(config.SamplingCount),
-			Timeout:       time.Duration(config.Timeout),
-		}
-	}
-	if settings.Destination == "" {
-		// Destination URL, need 204 for success return default to chromium
-		// https://github.com/chromium/chromium/blob/main/components/safety_check/url_constants.cc#L10
-		// https://chromium.googlesource.com/chromium/src/+/refs/heads/main/components/safety_check/url_constants.cc#10
-		settings.Destination = "https://connectivitycheck.gstatic.com/generate_204"
-	}
-	if settings.Interval == 0 {
-		settings.Interval = time.Duration(1) * time.Minute
-	} else if settings.Interval < 10 {
-		newError("health check interval is too small, 10s is applied").AtWarning().WriteToLog()
-		settings.Interval = time.Duration(10) * time.Second
-	}
-	if settings.SamplingCount <= 0 {
-		settings.SamplingCount = 10
-	}
-	if settings.Timeout <= 0 {
-		// results are saved after all health pings finish,
-		// a larger timeout could possibly makes checks run longer
-		settings.Timeout = time.Duration(5) * time.Second
-	}
-	return &HealthPing{
-		ctx:      ctx,
-		Settings: settings,
-		Results:  nil,
-	}
-}
-
-// StartScheduler implements the HealthChecker
-func (h *HealthPing) StartScheduler(selector func() ([]string, error)) {
-	if h.ticker != nil {
-		return
-	}
-	interval := h.Settings.Interval * time.Duration(h.Settings.SamplingCount)
-	ticker := time.NewTicker(interval)
-	tickerClose := make(chan struct{})
-	h.ticker = ticker
-	h.tickerClose = tickerClose
-	go func() {
-		for {
-			go func() {
-				tags, err := selector()
-				if err != nil {
-					newError("error select outbounds for scheduled health check: ", err).AtWarning().WriteToLog()
-					return
-				}
-				h.doCheck(tags, interval, h.Settings.SamplingCount)
-				h.Cleanup(tags)
-			}()
-			select {
-			case <-ticker.C:
-				continue
-			case <-tickerClose:
-				return
-			}
-		}
-	}()
-}
-
-// StopScheduler implements the HealthChecker
-func (h *HealthPing) StopScheduler() {
-	if h.ticker == nil {
-		return
-	}
-	h.ticker.Stop()
-	h.ticker = nil
-	close(h.tickerClose)
-	h.tickerClose = nil
-}
-
-// Check implements the HealthChecker
-func (h *HealthPing) Check(tags []string) error {
-	if len(tags) == 0 {
-		return nil
-	}
-	newError("perform one-time health check for tags ", tags).AtInfo().WriteToLog()
-	h.doCheck(tags, 0, 1)
-	return nil
-}
-
-type rtt struct {
-	handler string
-	value   time.Duration
-}
-
-// doCheck performs the 'rounds' amount checks in given 'duration'. You should make
-// sure all tags are valid for current balancer
-func (h *HealthPing) doCheck(tags []string, duration time.Duration, rounds int) {
-	count := len(tags) * rounds
-	if count == 0 {
-		return
-	}
-	ch := make(chan *rtt, count)
-
-	for _, tag := range tags {
-		handler := tag
-		client := newPingClient(
-			h.ctx,
-			h.Settings.Destination,
-			h.Settings.Timeout,
-			handler,
-		)
-		for i := 0; i < rounds; i++ {
-			delay := time.Duration(0)
-			if duration > 0 {
-				delay = time.Duration(dice.Roll(int(duration)))
-			}
-			time.AfterFunc(delay, func() {
-				newError("checking ", handler).AtDebug().WriteToLog()
-				delay, err := client.MeasureDelay()
-				if err == nil {
-					ch <- &rtt{
-						handler: handler,
-						value:   delay,
-					}
-					return
-				}
-				if !h.checkConnectivity() {
-					newError("network is down").AtWarning().WriteToLog()
-					ch <- &rtt{
-						handler: handler,
-						value:   0,
-					}
-					return
-				}
-				newError(fmt.Sprintf(
-					"error ping %s with %s: %s",
-					h.Settings.Destination,
-					handler,
-					err,
-				)).AtWarning().WriteToLog()
-				ch <- &rtt{
-					handler: handler,
-					value:   rttFailed,
-				}
-			})
-		}
-	}
-	for i := 0; i < count; i++ {
-		rtt := <-ch
-		if rtt.value > 0 {
-			// should not put results when network is down
-			h.PutResult(rtt.handler, rtt.value)
-		}
-	}
-}
-
-// PutResult put a ping rtt to results
-func (h *HealthPing) PutResult(tag string, rtt time.Duration) {
-	h.access.Lock()
-	defer h.access.Unlock()
-	if h.Results == nil {
-		h.Results = make(map[string]*HealthPingRTTS)
-	}
-	r, ok := h.Results[tag]
-	if !ok {
-		// validity is 2 times to sampling period, since the check are
-		// distributed in the time line randomly, in extreme cases,
-		// previous checks are distributed on the left, and latters
-		// on the right
-		validity := h.Settings.Interval * time.Duration(h.Settings.SamplingCount) * 2
-		r = NewHealthPingResult(h.Settings.SamplingCount, validity)
-		h.Results[tag] = r
-	}
-	r.Put(rtt)
-}
-
-// Cleanup removes results of removed handlers,
-// tags should be all valid tags of the Balancer now
-func (h *HealthPing) Cleanup(tags []string) {
-	h.access.Lock()
-	defer h.access.Unlock()
-	for tag := range h.Results {
-		found := false
-		for _, v := range tags {
-			if tag == v {
-				found = true
-				break
-			}
-		}
-		if !found {
-			delete(h.Results, tag)
-		}
-	}
-}
-
-// checkConnectivity checks the network connectivity, it returns
-// true if network is good or "connectivity check url" not set
-func (h *HealthPing) checkConnectivity() bool {
-	if h.Settings.Connectivity == "" {
-		return true
-	}
-	tester := newDirectPingClient(
-		h.Settings.Connectivity,
-		h.Settings.Timeout,
-	)
-	if _, err := tester.MeasureDelay(); err != nil {
-		return false
-	}
-	return true
-}
--- a/app/observatory/burst/healthping_result.go
+++ b/app/observatory/burst/healthping_result.go
@@ -1,143 +0,0 @@
-package burst
-
-import (
-	"math"
-	"time"
-)
-
-// HealthPingStats is the statistics of HealthPingRTTS
-type HealthPingStats struct {
-	All       int
-	Fail      int
-	Deviation time.Duration
-	Average   time.Duration
-	Max       time.Duration
-	Min       time.Duration
-}
-
-// HealthPingRTTS holds ping rtts for health Checker
-type HealthPingRTTS struct {
-	idx      int
-	cap      int
-	validity time.Duration
-	rtts     []*pingRTT
-
-	lastUpdateAt time.Time
-	stats        *HealthPingStats
-}
-
-type pingRTT struct {
-	time  time.Time
-	value time.Duration
-}
-
-// NewHealthPingResult returns a *HealthPingResult with specified capacity
-func NewHealthPingResult(cap int, validity time.Duration) *HealthPingRTTS {
-	return &HealthPingRTTS{cap: cap, validity: validity}
-}
-
-// Get gets statistics of the HealthPingRTTS
-func (h *HealthPingRTTS) Get() *HealthPingStats {
-	return h.getStatistics()
-}
-
-// GetWithCache get statistics and write cache for next call
-// Make sure use Mutex.Lock() before calling it, RWMutex.RLock()
-// is not an option since it writes cache
-func (h *HealthPingRTTS) GetWithCache() *HealthPingStats {
-	lastPutAt := h.rtts[h.idx].time
-	now := time.Now()
-	if h.stats == nil || h.lastUpdateAt.Before(lastPutAt) || h.findOutdated(now) >= 0 {
-		h.stats = h.getStatistics()
-		h.lastUpdateAt = now
-	}
-	return h.stats
-}
-
-// Put puts a new rtt to the HealthPingResult
-func (h *HealthPingRTTS) Put(d time.Duration) {
-	if h.rtts == nil {
-		h.rtts = make([]*pingRTT, h.cap)
-		for i := 0; i < h.cap; i++ {
-			h.rtts[i] = &pingRTT{}
-		}
-		h.idx = -1
-	}
-	h.idx = h.calcIndex(1)
-	now := time.Now()
-	h.rtts[h.idx].time = now
-	h.rtts[h.idx].value = d
-}
-
-func (h *HealthPingRTTS) calcIndex(step int) int {
-	idx := h.idx
-	idx += step
-	if idx >= h.cap {
-		idx %= h.cap
-	}
-	return idx
-}
-
-func (h *HealthPingRTTS) getStatistics() *HealthPingStats {
-	stats := &HealthPingStats{}
-	stats.Fail = 0
-	stats.Max = 0
-	stats.Min = rttFailed
-	sum := time.Duration(0)
-	cnt := 0
-	validRTTs := make([]time.Duration, 0)
-	for _, rtt := range h.rtts {
-		switch {
-		case rtt.value == 0 || time.Since(rtt.time) > h.validity:
-			continue
-		case rtt.value == rttFailed:
-			stats.Fail++
-			continue
-		}
-		cnt++
-		sum += rtt.value
-		validRTTs = append(validRTTs, rtt.value)
-		if stats.Max < rtt.value {
-			stats.Max = rtt.value
-		}
-		if stats.Min > rtt.value {
-			stats.Min = rtt.value
-		}
-	}
-	stats.All = cnt + stats.Fail
-	if cnt == 0 {
-		stats.Min = 0
-		return stats
-	}
-	stats.Average = time.Duration(int(sum) / cnt)
-	var std float64
-	if cnt < 2 {
-		// no enough data for standard deviation, we assume it's half of the average rtt
-		// if we don't do this, standard deviation of 1 round tested nodes is 0, will always
-		// selected before 2 or more rounds tested nodes
-		std = float64(stats.Average / 2)
-	} else {
-		variance := float64(0)
-		for _, rtt := range validRTTs {
-			variance += math.Pow(float64(rtt-stats.Average), 2)
-		}
-		std = math.Sqrt(variance / float64(cnt))
-	}
-	stats.Deviation = time.Duration(std)
-	return stats
-}
-
-func (h *HealthPingRTTS) findOutdated(now time.Time) int {
-	for i := h.cap - 1; i < 2*h.cap; i++ {
-		// from oldest to latest
-		idx := h.calcIndex(i)
-		validity := h.rtts[idx].time.Add(h.validity)
-		if h.lastUpdateAt.After(validity) {
-			return idx
-		}
-		if validity.Before(now) {
-			return idx
-		}
-	}
-	return -1
-}
--- a/app/observatory/burst/healthping_result_test.go
+++ b/app/observatory/burst/healthping_result_test.go
@@ -1,106 +0,0 @@
-package burst_test
-
-import (
-	"math"
-	reflect "reflect"
-	"testing"
-	"time"
-
-	"github.com/xtls/xray-core/app/observatory/burst"
-)
-
-func TestHealthPingResults(t *testing.T) {
-	rtts := []int64{60, 140, 60, 140, 60, 60, 140, 60, 140}
-	hr := burst.NewHealthPingResult(4, time.Hour)
-	for _, rtt := range rtts {
-		hr.Put(time.Duration(rtt))
-	}
-	rttFailed := time.Duration(math.MaxInt64)
-	expected := &burst.HealthPingStats{
-		All:       4,
-		Fail:      0,
-		Deviation: 40,
-		Average:   100,
-		Max:       140,
-		Min:       60,
-	}
-	actual := hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("expected: %v, actual: %v", expected, actual)
-	}
-	hr.Put(rttFailed)
-	hr.Put(rttFailed)
-	expected.Fail = 2
-	actual = hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("failed half-failures test, expected: %v, actual: %v", expected, actual)
-	}
-	hr.Put(rttFailed)
-	hr.Put(rttFailed)
-	expected = &burst.HealthPingStats{
-		All:       4,
-		Fail:      4,
-		Deviation: 0,
-		Average:   0,
-		Max:       0,
-		Min:       0,
-	}
-	actual = hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("failed all-failures test, expected: %v, actual: %v", expected, actual)
-	}
-}
-
-func TestHealthPingResultsIgnoreOutdated(t *testing.T) {
-	rtts := []int64{60, 140, 60, 140}
-	hr := burst.NewHealthPingResult(4, time.Duration(10)*time.Millisecond)
-	for i, rtt := range rtts {
-		if i == 2 {
-			// wait for previous 2 outdated
-			time.Sleep(time.Duration(10) * time.Millisecond)
-		}
-		hr.Put(time.Duration(rtt))
-	}
-	hr.Get()
-	expected := &burst.HealthPingStats{
-		All:       2,
-		Fail:      0,
-		Deviation: 40,
-		Average:   100,
-		Max:       140,
-		Min:       60,
-	}
-	actual := hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("failed 'half-outdated' test, expected: %v, actual: %v", expected, actual)
-	}
-	// wait for all outdated
-	time.Sleep(time.Duration(10) * time.Millisecond)
-	expected = &burst.HealthPingStats{
-		All:       0,
-		Fail:      0,
-		Deviation: 0,
-		Average:   0,
-		Max:       0,
-		Min:       0,
-	}
-	actual = hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("failed 'outdated / not-tested' test, expected: %v, actual: %v", expected, actual)
-	}
-
-	hr.Put(time.Duration(60))
-	expected = &burst.HealthPingStats{
-		All:  1,
-		Fail: 0,
-		// 1 sample, std=0.5rtt
-		Deviation: 30,
-		Average:   60,
-		Max:       60,
-		Min:       60,
-	}
-	actual = hr.Get()
-	if !reflect.DeepEqual(expected, actual) {
-		t.Errorf("expected: %v, actual: %v", expected, actual)
-	}
-}
--- a/app/observatory/burst/ping.go
+++ b/app/observatory/burst/ping.go
@@ -1,69 +0,0 @@
-package burst
-
-import (
-	"context"
-	"net/http"
-	"time"
-
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/transport/internet/tagged"
-)
-
-type pingClient struct {
-	destination string
-	httpClient  *http.Client
-}
-
-func newPingClient(ctx context.Context, destination string, timeout time.Duration, handler string) *pingClient {
-	return &pingClient{
-		destination: destination,
-		httpClient:  newHTTPClient(ctx, handler, timeout),
-	}
-}
-
-func newDirectPingClient(destination string, timeout time.Duration) *pingClient {
-	return &pingClient{
-		destination: destination,
-		httpClient:  &http.Client{Timeout: timeout},
-	}
-}
-
-func newHTTPClient(ctxv context.Context, handler string, timeout time.Duration) *http.Client {
-	tr := &http.Transport{
-		DisableKeepAlives: true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-			return tagged.Dialer(ctxv, dest, handler)
-		},
-	}
-	return &http.Client{
-		Transport: tr,
-		Timeout:   timeout,
-		// don't follow redirect
-		CheckRedirect: func(req *http.Request, via []*http.Request) error {
-			return http.ErrUseLastResponse
-		},
-	}
-}
-
-// MeasureDelay returns the delay time of the request to dest
-func (s *pingClient) MeasureDelay() (time.Duration, error) {
-	if s.httpClient == nil {
-		panic("pingClient no initialized")
-	}
-	req, err := http.NewRequest(http.MethodHead, s.destination, nil)
-	if err != nil {
-		return rttFailed, err
-	}
-	start := time.Now()
-	resp, err := s.httpClient.Do(req)
-	if err != nil {
-		return rttFailed, err
-	}
-	// don't wait for body
-	resp.Body.Close()
-	return time.Since(start), nil
-}
--- a/app/observatory/command/command.go
+++ b/app/observatory/command/command.go
@@ -1,47 +0,0 @@
-package command
-
-import (
-	"context"
-
-	"github.com/xtls/xray-core/app/observatory"
-	"github.com/xtls/xray-core/common"
-	core "github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/extension"
-	"google.golang.org/grpc"
-)
-
-type service struct {
-	UnimplementedObservatoryServiceServer
-	v *core.Instance
-
-	observatory extension.Observatory
-}
-
-func (s *service) GetOutboundStatus(ctx context.Context, request *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error) {
-	resp, err := s.observatory.GetObservation(ctx)
-	if err != nil {
-		return nil, err
-	}
-	retdata := resp.(*observatory.ObservationResult)
-	return &GetOutboundStatusResponse{
-		Status: retdata,
-	}, nil
-}
-
-func (s *service) Register(server *grpc.Server) {
-	RegisterObservatoryServiceServer(server, s)
-}
-
-func init() {
-	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
-		s := core.MustFromContext(ctx)
-		sv := &service{v: s}
-		err := s.RequireFeatures(func(Observatory extension.Observatory) {
-			sv.observatory = Observatory
-		})
-		if err != nil {
-			return nil, err
-		}
-		return sv, nil
-	}))
-}
--- a/app/observatory/command/command.pb.go
+++ b/app/observatory/command/command.pb.go
@@ -1,278 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
-// source: app/observatory/command/command.proto
-
-package command
-
-import (
-	observatory "github.com/xtls/xray-core/app/observatory"
-	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 GetOutboundStatusRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *GetOutboundStatusRequest) Reset() {
-	*x = GetOutboundStatusRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetOutboundStatusRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetOutboundStatusRequest) ProtoMessage() {}
-
-func (x *GetOutboundStatusRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_command_command_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 GetOutboundStatusRequest.ProtoReflect.Descriptor instead.
-func (*GetOutboundStatusRequest) Descriptor() ([]byte, []int) {
-	return file_app_observatory_command_command_proto_rawDescGZIP(), []int{0}
-}
-
-type GetOutboundStatusResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Status *observatory.ObservationResult `protobuf:"bytes,1,opt,name=status,proto3" json:"status,omitempty"`
-}
-
-func (x *GetOutboundStatusResponse) Reset() {
-	*x = GetOutboundStatusResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetOutboundStatusResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetOutboundStatusResponse) ProtoMessage() {}
-
-func (x *GetOutboundStatusResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_command_command_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 GetOutboundStatusResponse.ProtoReflect.Descriptor instead.
-func (*GetOutboundStatusResponse) Descriptor() ([]byte, []int) {
-	return file_app_observatory_command_command_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *GetOutboundStatusResponse) GetStatus() *observatory.ObservationResult {
-	if x != nil {
-		return x.Status
-	}
-	return nil
-}
-
-type Config struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *Config) Reset() {
-	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_command_command_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Config) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Config) ProtoMessage() {}
-
-func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_command_command_proto_msgTypes[2]
-	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 Config.ProtoReflect.Descriptor instead.
-func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_observatory_command_command_proto_rawDescGZIP(), []int{2}
-}
-
-var File_app_observatory_command_command_proto protoreflect.FileDescriptor
-
-var file_app_observatory_command_command_proto_rawDesc = []byte{
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-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_app_observatory_command_command_proto_rawDescOnce sync.Once
-	file_app_observatory_command_command_proto_rawDescData = file_app_observatory_command_command_proto_rawDesc
-)
-
-func file_app_observatory_command_command_proto_rawDescGZIP() []byte {
-	file_app_observatory_command_command_proto_rawDescOnce.Do(func() {
-		file_app_observatory_command_command_proto_rawDescData = protoimpl.X.CompressGZIP(file_app_observatory_command_command_proto_rawDescData)
-	})
-	return file_app_observatory_command_command_proto_rawDescData
-}
-
-var file_app_observatory_command_command_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_app_observatory_command_command_proto_goTypes = []interface{}{
-	(*GetOutboundStatusRequest)(nil),      // 0: xray.core.app.observatory.command.GetOutboundStatusRequest
-	(*GetOutboundStatusResponse)(nil),     // 1: xray.core.app.observatory.command.GetOutboundStatusResponse
-	(*Config)(nil),                        // 2: xray.core.app.observatory.command.Config
-	(*observatory.ObservationResult)(nil), // 3: xray.core.app.observatory.ObservationResult
-}
-var file_app_observatory_command_command_proto_depIdxs = []int32{
-	3, // 0: xray.core.app.observatory.command.GetOutboundStatusResponse.status:type_name -> xray.core.app.observatory.ObservationResult
-	0, // 1: xray.core.app.observatory.command.ObservatoryService.GetOutboundStatus:input_type -> xray.core.app.observatory.command.GetOutboundStatusRequest
-	1, // 2: xray.core.app.observatory.command.ObservatoryService.GetOutboundStatus:output_type -> xray.core.app.observatory.command.GetOutboundStatusResponse
-	2, // [2:3] is the sub-list for method output_type
-	1, // [1:2] 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_observatory_command_command_proto_init() }
-func file_app_observatory_command_command_proto_init() {
-	if File_app_observatory_command_command_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_command_command_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetOutboundStatusRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_command_command_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetOutboundStatusResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_command_command_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config); 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_observatory_command_command_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   3,
-			NumExtensions: 0,
-			NumServices:   1,
-		},
-		GoTypes:           file_app_observatory_command_command_proto_goTypes,
-		DependencyIndexes: file_app_observatory_command_command_proto_depIdxs,
-		MessageInfos:      file_app_observatory_command_command_proto_msgTypes,
-	}.Build()
-	File_app_observatory_command_command_proto = out.File
-	file_app_observatory_command_command_proto_rawDesc = nil
-	file_app_observatory_command_command_proto_goTypes = nil
-	file_app_observatory_command_command_proto_depIdxs = nil
-}
--- a/app/observatory/command/command.proto
+++ b/app/observatory/command/command.proto
@@ -1,24 +0,0 @@
-syntax = "proto3";
-
-package xray.core.app.observatory.command;
-option csharp_namespace = "Xray.Core.App.Observatory.Command";
-option go_package = "github.com/xtls/xray-core/app/observatory/command";
-option java_package = "com.xray.core.app.observatory.command";
-option java_multiple_files = true;
-
-import "app/observatory/config.proto";
-
-message GetOutboundStatusRequest {
-}
-
-message GetOutboundStatusResponse {
-  xray.core.app.observatory.ObservationResult status = 1;
-}
-
-service ObservatoryService {
-  rpc GetOutboundStatus(GetOutboundStatusRequest)
-      returns (GetOutboundStatusResponse) {}
-}
-
-
-message Config {}
--- a/app/observatory/command/command_grpc.pb.go
+++ b/app/observatory/command/command_grpc.pb.go
@@ -1,109 +0,0 @@
-// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
-// source: app/observatory/command/command.proto
-
-package command
-
-import (
-	context "context"
-	grpc "google.golang.org/grpc"
-	codes "google.golang.org/grpc/codes"
-	status "google.golang.org/grpc/status"
-)
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.32.0 or later.
-const _ = grpc.SupportPackageIsVersion7
-
-const (
-	ObservatoryService_GetOutboundStatus_FullMethodName = "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus"
-)
-
-// ObservatoryServiceClient is the client API for ObservatoryService service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
-type ObservatoryServiceClient interface {
-	GetOutboundStatus(ctx context.Context, in *GetOutboundStatusRequest, opts ...grpc.CallOption) (*GetOutboundStatusResponse, error)
-}
-
-type observatoryServiceClient struct {
-	cc grpc.ClientConnInterface
-}
-
-func NewObservatoryServiceClient(cc grpc.ClientConnInterface) ObservatoryServiceClient {
-	return &observatoryServiceClient{cc}
-}
-
-func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *GetOutboundStatusRequest, opts ...grpc.CallOption) (*GetOutboundStatusResponse, error) {
-	out := new(GetOutboundStatusResponse)
-	err := c.cc.Invoke(ctx, ObservatoryService_GetOutboundStatus_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// ObservatoryServiceServer is the server API for ObservatoryService service.
-// All implementations must embed UnimplementedObservatoryServiceServer
-// for forward compatibility
-type ObservatoryServiceServer interface {
-	GetOutboundStatus(context.Context, *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error)
-	mustEmbedUnimplementedObservatoryServiceServer()
-}
-
-// UnimplementedObservatoryServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedObservatoryServiceServer struct {
-}
-
-func (UnimplementedObservatoryServiceServer) GetOutboundStatus(context.Context, *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetOutboundStatus not implemented")
-}
-func (UnimplementedObservatoryServiceServer) mustEmbedUnimplementedObservatoryServiceServer() {}
-
-// UnsafeObservatoryServiceServer may be embedded to opt out of forward compatibility for this service.
-// Use of this interface is not recommended, as added methods to ObservatoryServiceServer will
-// result in compilation errors.
-type UnsafeObservatoryServiceServer interface {
-	mustEmbedUnimplementedObservatoryServiceServer()
-}
-
-func RegisterObservatoryServiceServer(s grpc.ServiceRegistrar, srv ObservatoryServiceServer) {
-	s.RegisterService(&ObservatoryService_ServiceDesc, srv)
-}
-
-func _ObservatoryService_GetOutboundStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetOutboundStatusRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ObservatoryServiceServer).GetOutboundStatus(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ObservatoryService_GetOutboundStatus_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ObservatoryServiceServer).GetOutboundStatus(ctx, req.(*GetOutboundStatusRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-// ObservatoryService_ServiceDesc is the grpc.ServiceDesc for ObservatoryService service.
-// It's only intended for direct use with grpc.RegisterService,
-// and not to be introspected or modified (even as a copy)
-var ObservatoryService_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "xray.core.app.observatory.command.ObservatoryService",
-	HandlerType: (*ObservatoryServiceServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "GetOutboundStatus",
-			Handler:    _ObservatoryService_GetOutboundStatus_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "app/observatory/command/command.proto",
-}
--- a/app/observatory/config.pb.go
+++ b/app/observatory/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/observatory/config.proto

 package observatory
@@ -67,124 +67,36 @@ func (x *ObservationResult) GetStatus() []*OutboundStatus {
 	return nil
 }

-type HealthPingMeasurementResult struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	All       int64 `protobuf:"varint,1,opt,name=all,proto3" json:"all,omitempty"`
-	Fail      int64 `protobuf:"varint,2,opt,name=fail,proto3" json:"fail,omitempty"`
-	Deviation int64 `protobuf:"varint,3,opt,name=deviation,proto3" json:"deviation,omitempty"`
-	Average   int64 `protobuf:"varint,4,opt,name=average,proto3" json:"average,omitempty"`
-	Max       int64 `protobuf:"varint,5,opt,name=max,proto3" json:"max,omitempty"`
-	Min       int64 `protobuf:"varint,6,opt,name=min,proto3" json:"min,omitempty"`
-}
-
-func (x *HealthPingMeasurementResult) Reset() {
-	*x = HealthPingMeasurementResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *HealthPingMeasurementResult) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*HealthPingMeasurementResult) ProtoMessage() {}
-
-func (x *HealthPingMeasurementResult) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_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 HealthPingMeasurementResult.ProtoReflect.Descriptor instead.
-func (*HealthPingMeasurementResult) Descriptor() ([]byte, []int) {
-	return file_app_observatory_config_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *HealthPingMeasurementResult) GetAll() int64 {
-	if x != nil {
-		return x.All
-	}
-	return 0
-}
-
-func (x *HealthPingMeasurementResult) GetFail() int64 {
-	if x != nil {
-		return x.Fail
-	}
-	return 0
-}
-
-func (x *HealthPingMeasurementResult) GetDeviation() int64 {
-	if x != nil {
-		return x.Deviation
-	}
-	return 0
-}
-
-func (x *HealthPingMeasurementResult) GetAverage() int64 {
-	if x != nil {
-		return x.Average
-	}
-	return 0
-}
-
-func (x *HealthPingMeasurementResult) GetMax() int64 {
-	if x != nil {
-		return x.Max
-	}
-	return 0
-}
-
-func (x *HealthPingMeasurementResult) GetMin() int64 {
-	if x != nil {
-		return x.Min
-	}
-	return 0
-}
-
 type OutboundStatus struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

 	// @Document Whether this outbound is usable
-	// @Restriction ReadOnlyForUser
+	//@Restriction ReadOnlyForUser
 	Alive bool `protobuf:"varint,1,opt,name=alive,proto3" json:"alive,omitempty"`
 	// @Document The time for probe request to finish.
-	// @Type time.ms
-	// @Restriction ReadOnlyForUser
+	//@Type time.ms
+	//@Restriction ReadOnlyForUser
 	Delay int64 `protobuf:"varint,2,opt,name=delay,proto3" json:"delay,omitempty"`
 	// @Document The last error caused this outbound failed to relay probe request
-	// @Restriction NotMachineReadable
+	//@Restriction NotMachineReadable
 	LastErrorReason string `protobuf:"bytes,3,opt,name=last_error_reason,json=lastErrorReason,proto3" json:"last_error_reason,omitempty"`
 	// @Document The outbound tag for this Server
-	// @Type id.outboundTag
+	//@Type id.outboundTag
 	OutboundTag string `protobuf:"bytes,4,opt,name=outbound_tag,json=outboundTag,proto3" json:"outbound_tag,omitempty"`
 	// @Document The time this outbound is known to be alive
-	// @Type id.outboundTag
+	//@Type id.outboundTag
 	LastSeenTime int64 `protobuf:"varint,5,opt,name=last_seen_time,json=lastSeenTime,proto3" json:"last_seen_time,omitempty"`
 	// @Document The time this outbound is tried
-	// @Type id.outboundTag
-	LastTryTime int64                        `protobuf:"varint,6,opt,name=last_try_time,json=lastTryTime,proto3" json:"last_try_time,omitempty"`
-	HealthPing  *HealthPingMeasurementResult `protobuf:"bytes,7,opt,name=health_ping,json=healthPing,proto3" json:"health_ping,omitempty"`
+	//@Type id.outboundTag
+	LastTryTime int64 `protobuf:"varint,6,opt,name=last_try_time,json=lastTryTime,proto3" json:"last_try_time,omitempty"`
 }

 func (x *OutboundStatus) Reset() {
 	*x = OutboundStatus{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[2]
+		mi := &file_app_observatory_config_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -197,7 +109,7 @@ func (x *OutboundStatus) String() string {
 func (*OutboundStatus) ProtoMessage() {}

 func (x *OutboundStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[2]
+	mi := &file_app_observatory_config_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -210,7 +122,7 @@ func (x *OutboundStatus) ProtoReflect() protoreflect.Message {

 // Deprecated: Use OutboundStatus.ProtoReflect.Descriptor instead.
 func (*OutboundStatus) Descriptor() ([]byte, []int) {
-	return file_app_observatory_config_proto_rawDescGZIP(), []int{2}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{1}
 }

 func (x *OutboundStatus) GetAlive() bool {
@@ -255,34 +167,27 @@ func (x *OutboundStatus) GetLastTryTime() int64 {
 	return 0
 }

-func (x *OutboundStatus) GetHealthPing() *HealthPingMeasurementResult {
-	if x != nil {
-		return x.HealthPing
-	}
-	return nil
-}
-
 type ProbeResult struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

 	// @Document Whether this outbound is usable
-	// @Restriction ReadOnlyForUser
+	//@Restriction ReadOnlyForUser
 	Alive bool `protobuf:"varint,1,opt,name=alive,proto3" json:"alive,omitempty"`
 	// @Document The time for probe request to finish.
-	// @Type time.ms
-	// @Restriction ReadOnlyForUser
+	//@Type time.ms
+	//@Restriction ReadOnlyForUser
 	Delay int64 `protobuf:"varint,2,opt,name=delay,proto3" json:"delay,omitempty"`
 	// @Document The error caused this outbound failed to relay probe request
-	// @Restriction NotMachineReadable
+	//@Restriction NotMachineReadable
 	LastErrorReason string `protobuf:"bytes,3,opt,name=last_error_reason,json=lastErrorReason,proto3" json:"last_error_reason,omitempty"`
 }

 func (x *ProbeResult) Reset() {
 	*x = ProbeResult{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[3]
+		mi := &file_app_observatory_config_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -295,7 +200,7 @@ func (x *ProbeResult) String() string {
 func (*ProbeResult) ProtoMessage() {}

 func (x *ProbeResult) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[3]
+	mi := &file_app_observatory_config_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -308,7 +213,7 @@ func (x *ProbeResult) ProtoReflect() protoreflect.Message {

 // Deprecated: Use ProbeResult.ProtoReflect.Descriptor instead.
 func (*ProbeResult) Descriptor() ([]byte, []int) {
-	return file_app_observatory_config_proto_rawDescGZIP(), []int{3}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{2}
 }

 func (x *ProbeResult) GetAlive() bool {
@@ -338,14 +243,14 @@ type Intensity struct {
 	unknownFields protoimpl.UnknownFields

 	// @Document The time interval for a probe request in ms.
-	// @Type time.ms
+	//@Type time.ms
 	ProbeInterval uint32 `protobuf:"varint,1,opt,name=probe_interval,json=probeInterval,proto3" json:"probe_interval,omitempty"`
 }

 func (x *Intensity) Reset() {
 	*x = Intensity{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[4]
+		mi := &file_app_observatory_config_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -358,7 +263,7 @@ func (x *Intensity) String() string {
 func (*Intensity) ProtoMessage() {}

 func (x *Intensity) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[4]
+	mi := &file_app_observatory_config_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -371,7 +276,7 @@ func (x *Intensity) ProtoReflect() protoreflect.Message {

 // Deprecated: Use Intensity.ProtoReflect.Descriptor instead.
 func (*Intensity) Descriptor() ([]byte, []int) {
-	return file_app_observatory_config_proto_rawDescGZIP(), []int{4}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{3}
 }

 func (x *Intensity) GetProbeInterval() uint32 {
@@ -396,7 +301,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[5]
+		mi := &file_app_observatory_config_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -409,7 +314,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}

 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[5]
+	mi := &file_app_observatory_config_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -422,7 +327,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {

 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_observatory_config_proto_rawDescGZIP(), []int{5}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{4}
 }

 func (x *Config) GetSubjectSelector() []string {
@@ -465,62 +370,47 @@ var file_app_observatory_config_proto_rawDesc = []byte{
 	0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6f,
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+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -535,23 +425,21 @@ func file_app_observatory_config_proto_rawDescGZIP() []byte {
 	return file_app_observatory_config_proto_rawDescData
 }

-var file_app_observatory_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_app_observatory_config_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
 var file_app_observatory_config_proto_goTypes = []interface{}{
-	(*ObservationResult)(nil),           // 0: xray.core.app.observatory.ObservationResult
-	(*HealthPingMeasurementResult)(nil), // 1: xray.core.app.observatory.HealthPingMeasurementResult
-	(*OutboundStatus)(nil),              // 2: xray.core.app.observatory.OutboundStatus
-	(*ProbeResult)(nil),                 // 3: xray.core.app.observatory.ProbeResult
-	(*Intensity)(nil),                   // 4: xray.core.app.observatory.Intensity
-	(*Config)(nil),                      // 5: xray.core.app.observatory.Config
+	(*ObservationResult)(nil), // 0: xray.core.app.observatory.ObservationResult
+	(*OutboundStatus)(nil),    // 1: xray.core.app.observatory.OutboundStatus
+	(*ProbeResult)(nil),       // 2: xray.core.app.observatory.ProbeResult
+	(*Intensity)(nil),         // 3: xray.core.app.observatory.Intensity
+	(*Config)(nil),            // 4: xray.core.app.observatory.Config
 }
 var file_app_observatory_config_proto_depIdxs = []int32{
-	2, // 0: xray.core.app.observatory.ObservationResult.status:type_name -> xray.core.app.observatory.OutboundStatus
-	1, // 1: xray.core.app.observatory.OutboundStatus.health_ping:type_name -> xray.core.app.observatory.HealthPingMeasurementResult
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	1, // 0: xray.core.app.observatory.ObservationResult.status:type_name -> xray.core.app.observatory.OutboundStatus
+	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_observatory_config_proto_init() }
@@ -573,18 +461,6 @@ func file_app_observatory_config_proto_init() {
 			}
 		}
 		file_app_observatory_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HealthPingMeasurementResult); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_observatory_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*OutboundStatus); i {
 			case 0:
 				return &v.state
@@ -596,7 +472,7 @@ func file_app_observatory_config_proto_init() {
 				return nil
 			}
 		}
-		file_app_observatory_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_app_observatory_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ProbeResult); i {
 			case 0:
 				return &v.state
@@ -608,7 +484,7 @@ func file_app_observatory_config_proto_init() {
 				return nil
 			}
 		}
-		file_app_observatory_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_app_observatory_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Intensity); i {
 			case 0:
 				return &v.state
@@ -620,7 +496,7 @@ func file_app_observatory_config_proto_init() {
 				return nil
 			}
 		}
-		file_app_observatory_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_app_observatory_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Config); i {
 			case 0:
 				return &v.state
@@ -639,7 +515,7 @@ func file_app_observatory_config_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_observatory_config_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
--- a/app/observatory/config.proto
+++ b/app/observatory/config.proto
@@ -10,15 +10,6 @@ message ObservationResult {
  repeated OutboundStatus status = 1;
 }

-message HealthPingMeasurementResult {
-  int64 all = 1;
-  int64 fail = 2;
-  int64 deviation = 3;
-  int64 average = 4;
-  int64 max = 5;
-  int64 min = 6;
-}
-
 message OutboundStatus{
  /* @Document Whether this outbound is usable
     @Restriction ReadOnlyForUser
@@ -45,8 +36,6 @@ message OutboundStatus{
   @Type id.outboundTag
 */
  int64 last_try_time = 6;
-
-  HealthPingMeasurementResult health_ping = 7;
 }

 message ProbeResult{
--- a/app/observatory/observer.go
+++ b/app/observatory/observer.go
@@ -2,6 +2,7 @@ package observatory

 import (
 	"context"
+	"github.com/xtls/xray-core/core"
 	"net"
 	"net/http"
 	"net/url"
@@ -9,16 +10,16 @@ import (
 	"sync"
 	"time"

+	"github.com/golang/protobuf/proto"
+
 	"github.com/xtls/xray-core/common"
 	v2net "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/common/task"
-	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/transport/internet/tagged"
-	"google.golang.org/protobuf/proto"
 )

 type Observer struct {
@@ -31,6 +32,8 @@ type Observer struct {
 	finished *done.Instance

 	ohm outbound.Manager
+
+	StatusUpdate func(result *OutboundStatus)
 }

 func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
@@ -65,45 +68,22 @@ func (o *Observer) background() {
 		}

 		outbounds := hs.Select(o.config.SubjectSelector)
+		sort.Strings(outbounds)

 		o.updateStatus(outbounds)

-		sleepTime := time.Second * 10
-		if o.config.ProbeInterval != 0 {
-			sleepTime = time.Duration(o.config.ProbeInterval)
-		}
-
-		if !o.config.EnableConcurrency {
-			sort.Strings(outbounds)
-			for _, v := range outbounds {
-				result := o.probe(v)
-				o.updateStatusForResult(v, &result)
-				if o.finished.Done() {
-					return
-				}
-				time.Sleep(sleepTime)
-			}
-			continue
-		}
-
-		ch := make(chan struct{}, len(outbounds))
-
 		for _, v := range outbounds {
-			go func(v string) {
-				result := o.probe(v)
-				o.updateStatusForResult(v, &result)
-				ch <- struct{}{}
-			}(v)
-		}
-
-		for range outbounds {
-			select {
-			case <-ch:
-			case <-o.finished.Wait():
+			result := o.probe(v)
+			o.updateStatusForResult(v, &result)
+			if o.finished.Done() {
 				return
 			}
+			sleepTime := time.Second * 10
+			if o.config.ProbeInterval != 0 {
+				sleepTime = time.Duration(o.config.ProbeInterval)
+			}
+			time.Sleep(sleepTime)
 		}
-		time.Sleep(sleepTime)
 	}
 }

@@ -124,7 +104,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		DialContext: func(ctx context.Context, network string, addr string) (net.Conn, error) {
 			var connection net.Conn
 			taskErr := task.Run(ctx, func() error {
-				// MUST use Xray's built in context system
+				// MUST use V2Fly's built in context system
 				dest, err := v2net.ParseDestination(network + ":" + addr)
 				if err != nil {
 					return newError("cannot understand address").Base(err)
@@ -155,7 +135,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 	var GETTime time.Duration
 	err := task.Run(o.ctx, func() error {
 		startTime := time.Now()
-		probeURL := "https://www.google.com/generate_204"
+		probeURL := "https://api.v2fly.org/checkConnection.svgz"
 		if o.config.ProbeUrl != "" {
 			probeURL = o.config.ProbeUrl
 		}
@@ -205,6 +185,10 @@ func (o *Observer) updateStatusForResult(outbound string, result *ProbeResult) {
 		status.LastErrorReason = result.LastErrorReason
 		status.Delay = 99999999
 	}
+
+	if o.StatusUpdate != nil {
+		o.StatusUpdate(status)
+	}
 }

 func (o *Observer) findStatusLocationLockHolderOnly(outbound string) int {
--- a/app/observatory/persist.go
+++ b/app/observatory/persist.go
@@ -0,0 +1,12 @@
+package observatory
+
+func (o *Observer) UpdateStatus(result *OutboundStatus) {
+	o.statusLock.Lock()
+	defer o.statusLock.Unlock()
+
+	if location := o.findStatusLocationLockHolderOnly(result.OutboundTag); location != -1 {
+		o.status[location] = result
+	} else {
+		o.status = append(o.status, result)
+	}
+}
--- a/app/policy/config.pb.go
+++ b/app/policy/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/policy/config.proto

 package policy
--- a/app/proxyman/command/command.go
+++ b/app/proxyman/command/command.go
@@ -3,12 +3,13 @@ package command
 import (
 	"context"

+	grpc "google.golang.org/grpc"
+
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/proxy"
-	grpc "google.golang.org/grpc"
 )

 // InboundOperation is the interface for operations that applies to inbound handlers.
--- a/app/proxyman/command/command.pb.go
+++ b/app/proxyman/command/command.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/proxyman/command/command.proto

 package command
--- a/app/proxyman/command/command_grpc.pb.go
+++ b/app/proxyman/command/command_grpc.pb.go
@@ -1,8 +1,4 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
-// source: app/proxyman/command/command.proto

 package command

@@ -18,15 +14,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7

-const (
-	HandlerService_AddInbound_FullMethodName     = "/xray.app.proxyman.command.HandlerService/AddInbound"
-	HandlerService_RemoveInbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/RemoveInbound"
-	HandlerService_AlterInbound_FullMethodName   = "/xray.app.proxyman.command.HandlerService/AlterInbound"
-	HandlerService_AddOutbound_FullMethodName    = "/xray.app.proxyman.command.HandlerService/AddOutbound"
-	HandlerService_RemoveOutbound_FullMethodName = "/xray.app.proxyman.command.HandlerService/RemoveOutbound"
-	HandlerService_AlterOutbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/AlterOutbound"
-)
-
 // HandlerServiceClient is the client API for HandlerService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -49,7 +36,7 @@ func NewHandlerServiceClient(cc grpc.ClientConnInterface) HandlerServiceClient {

 func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error) {
 	out := new(AddInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -58,7 +45,7 @@ func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundReq

 func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error) {
 	out := new(RemoveInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -67,7 +54,7 @@ func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInbo

 func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error) {
 	out := new(AlterInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -76,7 +63,7 @@ func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboun

 func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error) {
 	out := new(AddOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -85,7 +72,7 @@ func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundR

 func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error) {
 	out := new(RemoveOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -94,7 +81,7 @@ func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOut

 func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error) {
 	out := new(AlterOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -159,7 +146,7 @@ func _HandlerService_AddInbound_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AddInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AddInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddInbound(ctx, req.(*AddInboundRequest))
@@ -177,7 +164,7 @@ func _HandlerService_RemoveInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_RemoveInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveInbound(ctx, req.(*RemoveInboundRequest))
@@ -195,7 +182,7 @@ func _HandlerService_AlterInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AlterInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterInbound(ctx, req.(*AlterInboundRequest))
@@ -213,7 +200,7 @@ func _HandlerService_AddOutbound_Handler(srv interface{}, ctx context.Context, d
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AddOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AddOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddOutbound(ctx, req.(*AddOutboundRequest))
@@ -231,7 +218,7 @@ func _HandlerService_RemoveOutbound_Handler(srv interface{}, ctx context.Context
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_RemoveOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveOutbound(ctx, req.(*RemoveOutboundRequest))
@@ -249,7 +236,7 @@ func _HandlerService_AlterOutbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AlterOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterOutbound(ctx, req.(*AlterOutboundRequest))
--- a/app/proxyman/config.pb.go
+++ b/app/proxyman/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/proxyman/config.proto

 package proxyman
@@ -69,6 +69,64 @@ func (KnownProtocols) EnumDescriptor() ([]byte, []int) {
 	return file_app_proxyman_config_proto_rawDescGZIP(), []int{0}
 }

+type DomainStrategy int32
+
+const (
+	DomainStrategy_AS_IS      DomainStrategy = 0
+	DomainStrategy_USE_IP     DomainStrategy = 1
+	DomainStrategy_USE_IP4    DomainStrategy = 2
+	DomainStrategy_USE_IP6    DomainStrategy = 3
+	DomainStrategy_PREFER_IP4 DomainStrategy = 4
+	DomainStrategy_PREFER_IP6 DomainStrategy = 5
+)
+
+// Enum value maps for DomainStrategy.
+var (
+	DomainStrategy_name = map[int32]string{
+		0: "AS_IS",
+		1: "USE_IP",
+		2: "USE_IP4",
+		3: "USE_IP6",
+		4: "PREFER_IP4",
+		5: "PREFER_IP6",
+	}
+	DomainStrategy_value = map[string]int32{
+		"AS_IS":      0,
+		"USE_IP":     1,
+		"USE_IP4":    2,
+		"USE_IP6":    3,
+		"PREFER_IP4": 4,
+		"PREFER_IP6": 5,
+	}
+)
+
+func (x DomainStrategy) Enum() *DomainStrategy {
+	p := new(DomainStrategy)
+	*p = x
+	return p
+}
+
+func (x DomainStrategy) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (DomainStrategy) Descriptor() protoreflect.EnumDescriptor {
+	return file_app_proxyman_config_proto_enumTypes[1].Descriptor()
+}
+
+func (DomainStrategy) Type() protoreflect.EnumType {
+	return &file_app_proxyman_config_proto_enumTypes[1]
+}
+
+func (x DomainStrategy) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use DomainStrategy.Descriptor instead.
+func (DomainStrategy) EnumDescriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{1}
+}
+
 type AllocationStrategy_Type int32

 const (
@@ -105,11 +163,11 @@ func (x AllocationStrategy_Type) String() string {
 }

 func (AllocationStrategy_Type) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_proxyman_config_proto_enumTypes[1].Descriptor()
+	return file_app_proxyman_config_proto_enumTypes[2].Descriptor()
 }

 func (AllocationStrategy_Type) Type() protoreflect.EnumType {
-	return &file_app_proxyman_config_proto_enumTypes[1]
+	return &file_app_proxyman_config_proto_enumTypes[2]
 }

 func (x AllocationStrategy_Type) Number() protoreflect.EnumNumber {
@@ -238,8 +296,7 @@ type SniffingConfig struct {
 	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.
+	// 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"`
 	RouteOnly    bool `protobuf:"varint,5,opt,name=route_only,json=routeOnly,proto3" json:"route_only,omitempty"`
 }
@@ -316,8 +373,8 @@ type ReceiverConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

-	// PortList specifies the ports which the Receiver should listen on.
-	PortList *net.PortList `protobuf:"bytes,1,opt,name=port_list,json=portList,proto3" json:"port_list,omitempty"`
+	// PortRange specifies the ports which the Receiver should listen on.
+	PortRange *net.PortRange `protobuf:"bytes,1,opt,name=port_range,json=portRange,proto3" json:"port_range,omitempty"`
 	// Listen specifies the IP address that the Receiver should listen on.
 	Listen                     *net.IPOrDomain        `protobuf:"bytes,2,opt,name=listen,proto3" json:"listen,omitempty"`
 	AllocationStrategy         *AllocationStrategy    `protobuf:"bytes,3,opt,name=allocation_strategy,json=allocationStrategy,proto3" json:"allocation_strategy,omitempty"`
@@ -326,7 +383,7 @@ type ReceiverConfig struct {
 	// Override domains for the given protocol.
 	// Deprecated. Use sniffing_settings.
 	//
-	// Deprecated: Marked as deprecated in app/proxyman/config.proto.
+	// Deprecated: Do not use.
 	DomainOverride   []KnownProtocols `protobuf:"varint,7,rep,packed,name=domain_override,json=domainOverride,proto3,enum=xray.app.proxyman.KnownProtocols" json:"domain_override,omitempty"`
 	SniffingSettings *SniffingConfig  `protobuf:"bytes,8,opt,name=sniffing_settings,json=sniffingSettings,proto3" json:"sniffing_settings,omitempty"`
 }
@@ -363,9 +420,9 @@ func (*ReceiverConfig) Descriptor() ([]byte, []int) {
 	return file_app_proxyman_config_proto_rawDescGZIP(), []int{3}
 }

-func (x *ReceiverConfig) GetPortList() *net.PortList {
+func (x *ReceiverConfig) GetPortRange() *net.PortRange {
 	if x != nil {
-		return x.PortList
+		return x.PortRange
 	}
 	return nil
 }
@@ -398,7 +455,7 @@ func (x *ReceiverConfig) GetReceiveOriginalDestination() bool {
 	return false
 }

-// Deprecated: Marked as deprecated in app/proxyman/config.proto.
+// Deprecated: Do not use.
 func (x *ReceiverConfig) GetDomainOverride() []KnownProtocols {
 	if x != nil {
 		return x.DomainOverride
@@ -524,6 +581,7 @@ type SenderConfig struct {
 	StreamSettings    *internet.StreamConfig `protobuf:"bytes,2,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
 	ProxySettings     *internet.ProxyConfig  `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
 	MultiplexSettings *MultiplexingConfig    `protobuf:"bytes,4,opt,name=multiplex_settings,json=multiplexSettings,proto3" json:"multiplex_settings,omitempty"`
+	DomainStrategy    DomainStrategy         `protobuf:"varint,5,opt,name=domain_strategy,json=domainStrategy,proto3,enum=xray.app.proxyman.DomainStrategy" json:"domain_strategy,omitempty"`
 }

 func (x *SenderConfig) Reset() {
@@ -586,6 +644,13 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }

+func (x *SenderConfig) GetDomainStrategy() DomainStrategy {
+	if x != nil {
+		return x.DomainStrategy
+	}
+	return DomainStrategy_AS_IS
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -594,11 +659,7 @@ type MultiplexingConfig struct {
 	// Whether or not Mux is enabled.
 	Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
 	// Max number of concurrent connections that one Mux connection can handle.
-	Concurrency int32 `protobuf:"varint,2,opt,name=concurrency,proto3" json:"concurrency,omitempty"`
-	// Transport XUDP in another Mux.
-	XudpConcurrency int32 `protobuf:"varint,3,opt,name=xudpConcurrency,proto3" json:"xudpConcurrency,omitempty"`
-	// "reject" (default), "allow" or "skip".
-	XudpProxyUDP443 string `protobuf:"bytes,4,opt,name=xudpProxyUDP443,proto3" json:"xudpProxyUDP443,omitempty"`
+	Concurrency uint32 `protobuf:"varint,2,opt,name=concurrency,proto3" json:"concurrency,omitempty"`
 }

 func (x *MultiplexingConfig) Reset() {
@@ -640,27 +701,13 @@ func (x *MultiplexingConfig) GetEnabled() bool {
 	return false
 }

-func (x *MultiplexingConfig) GetConcurrency() int32 {
+func (x *MultiplexingConfig) GetConcurrency() uint32 {
 	if x != nil {
 		return x.Concurrency
 	}
 	return 0
 }

-func (x *MultiplexingConfig) GetXudpConcurrency() int32 {
-	if x != nil {
-		return x.XudpConcurrency
-	}
-	return 0
-}
-
-func (x *MultiplexingConfig) GetXudpProxyUDP443() string {
-	if x != nil {
-		return x.XudpProxyUDP443
-	}
-	return ""
-}
-
 type AllocationStrategy_AllocationStrategyConcurrency struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -809,91 +856,97 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x79, 0x18, 0x04, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74,
 	0x61, 0x4f, 0x6e, 0x6c, 0x79, 0x12, 0x1d, 0x0a, 0x0a, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x5f, 0x6f,
 	0x6e, 0x6c, 0x79, 0x18, 0x05, 0x20, 0x01, 0x28, 0x08, 0x52, 0x09, 0x72, 0x6f, 0x75, 0x74, 0x65,
-	0x4f, 0x6e, 0x6c, 0x79, 0x22, 0x8d, 0x04, 0x0a, 0x0e, 0x52, 0x65, 0x63, 0x65, 0x69, 0x76, 0x65,
-	0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x36, 0x0a, 0x09, 0x70, 0x6f, 0x72, 0x74, 0x5f,
-	0x6c, 0x69, 0x73, 0x74, 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, 0x50, 0x6f, 0x72,
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-	0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x72, 0x61, 0x74, 0x65, 0x67, 0x79, 0x18, 0x03, 0x20, 0x01, 0x28,
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+	0x53, 0x45, 0x5f, 0x49, 0x50, 0x34, 0x10, 0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f,
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+	0x49, 0x50, 0x36, 0x10, 0x05, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61,
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+	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 (
@@ -908,48 +961,50 @@ func file_app_proxyman_config_proto_rawDescGZIP() []byte {
 	return file_app_proxyman_config_proto_rawDescData
 }

-var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 3)
 var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_app_proxyman_config_proto_goTypes = []interface{}{
 	(KnownProtocols)(0),                                      // 0: xray.app.proxyman.KnownProtocols
-	(AllocationStrategy_Type)(0),                             // 1: xray.app.proxyman.AllocationStrategy.Type
-	(*InboundConfig)(nil),                                    // 2: xray.app.proxyman.InboundConfig
-	(*AllocationStrategy)(nil),                               // 3: xray.app.proxyman.AllocationStrategy
-	(*SniffingConfig)(nil),                                   // 4: xray.app.proxyman.SniffingConfig
-	(*ReceiverConfig)(nil),                                   // 5: xray.app.proxyman.ReceiverConfig
-	(*InboundHandlerConfig)(nil),                             // 6: xray.app.proxyman.InboundHandlerConfig
-	(*OutboundConfig)(nil),                                   // 7: xray.app.proxyman.OutboundConfig
-	(*SenderConfig)(nil),                                     // 8: xray.app.proxyman.SenderConfig
-	(*MultiplexingConfig)(nil),                               // 9: xray.app.proxyman.MultiplexingConfig
-	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 10: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	(*net.PortList)(nil),                                     // 12: xray.common.net.PortList
-	(*net.IPOrDomain)(nil),                                   // 13: xray.common.net.IPOrDomain
-	(*internet.StreamConfig)(nil),                            // 14: xray.transport.internet.StreamConfig
-	(*serial.TypedMessage)(nil),                              // 15: xray.common.serial.TypedMessage
-	(*internet.ProxyConfig)(nil),                             // 16: xray.transport.internet.ProxyConfig
+	(DomainStrategy)(0),                                      // 1: xray.app.proxyman.DomainStrategy
+	(AllocationStrategy_Type)(0),                             // 2: xray.app.proxyman.AllocationStrategy.Type
+	(*InboundConfig)(nil),                                    // 3: xray.app.proxyman.InboundConfig
+	(*AllocationStrategy)(nil),                               // 4: xray.app.proxyman.AllocationStrategy
+	(*SniffingConfig)(nil),                                   // 5: xray.app.proxyman.SniffingConfig
+	(*ReceiverConfig)(nil),                                   // 6: xray.app.proxyman.ReceiverConfig
+	(*InboundHandlerConfig)(nil),                             // 7: xray.app.proxyman.InboundHandlerConfig
+	(*OutboundConfig)(nil),                                   // 8: xray.app.proxyman.OutboundConfig
+	(*SenderConfig)(nil),                                     // 9: xray.app.proxyman.SenderConfig
+	(*MultiplexingConfig)(nil),                               // 10: xray.app.proxyman.MultiplexingConfig
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 12: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	(*net.PortRange)(nil),                                    // 13: xray.common.net.PortRange
+	(*net.IPOrDomain)(nil),                                   // 14: xray.common.net.IPOrDomain
+	(*internet.StreamConfig)(nil),                            // 15: xray.transport.internet.StreamConfig
+	(*serial.TypedMessage)(nil),                              // 16: xray.common.serial.TypedMessage
+	(*internet.ProxyConfig)(nil),                             // 17: xray.transport.internet.ProxyConfig
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
-	1,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
-	10, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	11, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	12, // 3: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
-	13, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
-	3,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
-	14, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	2,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
+	11, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	12, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	13, // 3: xray.app.proxyman.ReceiverConfig.port_range:type_name -> xray.common.net.PortRange
+	14, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
+	4,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
+	15, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
 	0,  // 7: xray.app.proxyman.ReceiverConfig.domain_override:type_name -> xray.app.proxyman.KnownProtocols
-	4,  // 8: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
-	15, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
-	15, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
-	13, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
-	14, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
-	16, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
-	9,  // 14: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
-	15, // [15:15] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for extension type_name
-	15, // [15:15] is the sub-list for extension extendee
-	0,  // [0:15] is the sub-list for field type_name
+	5,  // 8: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
+	16, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
+	16, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
+	14, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
+	15, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	17, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
+	10, // 14: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
+	1,  // 15: xray.app.proxyman.SenderConfig.domain_strategy:type_name -> xray.app.proxyman.DomainStrategy
+	16, // [16:16] is the sub-list for method output_type
+	16, // [16:16] is the sub-list for method input_type
+	16, // [16:16] is the sub-list for extension type_name
+	16, // [16:16] is the sub-list for extension extendee
+	0,  // [0:16] is the sub-list for field type_name
 }

 func init() { file_app_proxyman_config_proto_init() }
@@ -1084,7 +1139,7 @@ func file_app_proxyman_config_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_proxyman_config_proto_rawDesc,
-			NumEnums:      2,
+			NumEnums:      3,
 			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
--- a/app/proxyman/config.proto
+++ b/app/proxyman/config.proto
@@ -27,13 +27,17 @@ message AllocationStrategy {

  Type type = 1;

-  message AllocationStrategyConcurrency { uint32 value = 1; }
+  message AllocationStrategyConcurrency {
+    uint32 value = 1;
+  }

  // Number of handlers (ports) running in parallel.
  // Default value is 3 if unset.
  AllocationStrategyConcurrency concurrency = 2;

-  message AllocationStrategyRefresh { uint32 value = 1; }
+  message AllocationStrategyRefresh {
+    uint32 value = 1;
+  }

  // Number of minutes before a handler is regenerated.
  // Default value is 5 if unset.
@@ -55,16 +59,15 @@ message SniffingConfig {
  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.
+  // Can be used to support SMTP like protocol where server send the first message.
  bool metadata_only = 4;

  bool route_only = 5;
 }

 message ReceiverConfig {
-  // PortList specifies the ports which the Receiver should listen on.
-  xray.common.net.PortList port_list = 1;
+  // PortRange specifies the ports which the Receiver should listen on.
+  xray.common.net.PortRange port_range = 1;
  // Listen specifies the IP address that the Receiver should listen on.
  xray.common.net.IPOrDomain listen = 2;
  AllocationStrategy allocation_strategy = 3;
@@ -73,7 +76,7 @@ message ReceiverConfig {
  reserved 6;
  // Override domains for the given protocol.
  // Deprecated. Use sniffing_settings.
-  repeated KnownProtocols domain_override = 7 [ deprecated = true ];
+  repeated KnownProtocols domain_override = 7 [deprecated = true];
  SniffingConfig sniffing_settings = 8;
 }

@@ -85,21 +88,27 @@ message InboundHandlerConfig {

 message OutboundConfig {}

+enum DomainStrategy {
+  AS_IS = 0;
+  USE_IP = 1;
+  USE_IP4 = 2;
+  USE_IP6 = 3;
+  PREFER_IP4 = 4;
+  PREFER_IP6 = 5;
+}
+
 message SenderConfig {
  // Send traffic through the given IP. Only IP is allowed.
  xray.common.net.IPOrDomain via = 1;
  xray.transport.internet.StreamConfig stream_settings = 2;
  xray.transport.internet.ProxyConfig proxy_settings = 3;
  MultiplexingConfig multiplex_settings = 4;
+  DomainStrategy domain_strategy = 5;
 }

 message MultiplexingConfig {
  // Whether or not Mux is enabled.
  bool enabled = 1;
  // Max number of concurrent connections that one Mux connection can handle.
-  int32 concurrency = 2;
-  // Transport XUDP in another Mux.
-  int32 xudpConcurrency = 3;
-  // "reject" (default), "allow" or "skip".
-  string xudpProxyUDP443 = 4;
+  uint32 concurrency = 2;
 }
--- a/app/proxyman/inbound/always.go
+++ b/app/proxyman/inbound/always.go
@@ -67,7 +67,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	uplinkCounter, downlinkCounter := getStatCounter(core.MustFromContext(ctx), tag)

 	nl := p.Network()
-	pl := receiverConfig.PortList
+	pr := receiverConfig.PortRange
 	address := receiverConfig.Listen.AsAddress()
 	if address == nil {
 		address = net.AnyIP
@@ -87,7 +87,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 		}
 		mss.SocketSettings.ReceiveOriginalDestAddress = true
 	}
-	if pl == nil {
+	if pr == nil {
 		if net.HasNetwork(nl, net.Network_UNIX) {
 			newError("creating unix domain socket worker on ", address).AtDebug().WriteToLog()

@@ -105,43 +105,41 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 			h.workers = append(h.workers, worker)
 		}
 	}
-	if pl != nil {
-		for _, pr := range pl.Range {
-			for port := pr.From; port <= pr.To; port++ {
-				if net.HasNetwork(nl, net.Network_TCP) {
-					newError("creating stream worker on ", address, ":", port).AtDebug().WriteToLog()
+	if pr != nil {
+		for port := pr.From; port <= pr.To; port++ {
+			if net.HasNetwork(nl, net.Network_TCP) {
+				newError("creating stream worker on ", address, ":", port).AtDebug().WriteToLog()

-					worker := &tcpWorker{
-						address:         address,
-						port:            net.Port(port),
-						proxy:           p,
-						stream:          mss,
-						recvOrigDest:    receiverConfig.ReceiveOriginalDestination,
-						tag:             tag,
-						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
-						uplinkCounter:   uplinkCounter,
-						downlinkCounter: downlinkCounter,
-						ctx:             ctx,
-					}
-					h.workers = append(h.workers, worker)
+				worker := &tcpWorker{
+					address:         address,
+					port:            net.Port(port),
+					proxy:           p,
+					stream:          mss,
+					recvOrigDest:    receiverConfig.ReceiveOriginalDestination,
+					tag:             tag,
+					dispatcher:      h.mux,
+					sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
+					uplinkCounter:   uplinkCounter,
+					downlinkCounter: downlinkCounter,
+					ctx:             ctx,
 				}
+				h.workers = append(h.workers, worker)
+			}

-				if net.HasNetwork(nl, net.Network_UDP) {
-					worker := &udpWorker{
-						tag:             tag,
-						proxy:           p,
-						address:         address,
-						port:            net.Port(port),
-						dispatcher:      h.mux,
-						sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
-						uplinkCounter:   uplinkCounter,
-						downlinkCounter: downlinkCounter,
-						stream:          mss,
-						ctx:             ctx,
-					}
-					h.workers = append(h.workers, worker)
+			if net.HasNetwork(nl, net.Network_UDP) {
+				worker := &udpWorker{
+					tag:             tag,
+					proxy:           p,
+					address:         address,
+					port:            net.Port(port),
+					dispatcher:      h.mux,
+					sniffingConfig:  receiverConfig.GetEffectiveSniffingSettings(),
+					uplinkCounter:   uplinkCounter,
+					downlinkCounter: downlinkCounter,
+					stream:          mss,
+					ctx:             ctx,
 				}
+				h.workers = append(h.workers, worker)
 			}
 		}
 	}
--- a/app/proxyman/inbound/dynamic.go
+++ b/app/proxyman/inbound/dynamic.go
@@ -69,18 +69,15 @@ func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *p
 }

 func (h *DynamicInboundHandler) allocatePort() net.Port {
-	allPorts := []int32{}
-	for _, pr := range h.receiverConfig.PortList.Range {
-		for i := pr.From; i <= pr.To; i++ {
-			allPorts = append(allPorts, int32(i))
-		}
-	}
+	from := int(h.receiverConfig.PortRange.From)
+	delta := int(h.receiverConfig.PortRange.To) - from + 1
+
 	h.portMutex.Lock()
 	defer h.portMutex.Unlock()

 	for {
-		r := dice.Roll(len(allPorts))
-		port := net.Port(allPorts[r])
+		r := dice.Roll(delta)
+		port := net.Port(from + r)
 		_, used := h.portsInUse[port]
 		if !used {
 			h.portsInUse[port] = true
--- a/app/proxyman/inbound/worker.go
+++ b/app/proxyman/inbound/worker.go
@@ -6,6 +6,8 @@ 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"
@@ -18,7 +20,6 @@ import (
 	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tcp"
 	"github.com/xtls/xray-core/transport/internet/udp"
 	"github.com/xtls/xray-core/transport/pipe"
@@ -60,7 +61,6 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	sid := session.NewID()
 	ctx = session.ContextWithID(ctx, sid)

-	var outbound = &session.Outbound{}
 	if w.recvOrigDest {
 		var dest net.Destination
 		switch getTProxyType(w.stream) {
@@ -75,10 +75,11 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
 		if dest.IsValid() {
-			outbound.Target = dest
+			ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+				Target: dest,
+			})
 		}
 	}
-	ctx = session.ContextWithOutbound(ctx, outbound)

 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -108,7 +109,9 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 		newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
 	}
 	cancel()
-	conn.Close()
+	if err := conn.Close(); err != nil {
+		newError("failed to close connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
+	}
 }

 func (w *tcpWorker) Proxy() proxy.Inbound {
@@ -362,7 +365,7 @@ func (w *udpWorker) clean() error {
 	}

 	for addr, conn := range w.activeConn {
-		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 2*60 {
+		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 5*60 { // TODO Timeout too small
 			if !conn.inactive {
 				conn.setInactive()
 				delete(w.activeConn, addr)
--- a/app/proxyman/outbound/handler.go
+++ b/app/proxyman/outbound/handler.go
@@ -2,13 +2,11 @@ package outbound

 import (
 	"context"
-	"errors"
-	"io"
-	"os"
+	"github.com/xtls/xray-core/features/dns"
+	"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"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
@@ -20,7 +18,6 @@ import (
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"github.com/xtls/xray-core/transport/pipe"
 )
@@ -57,20 +54,20 @@ type Handler struct {
 	streamSettings  *internet.MemoryStreamConfig
 	proxy           proxy.Outbound
 	outboundManager outbound.Manager
+	dnsClient       dns.Client
 	mux             *mux.ClientManager
-	xudp            *mux.ClientManager
-	udp443          string
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
 }

-// NewHandler creates a new Handler based on the given configuration.
+// NewHandler create a new Handler based on the given configuration.
 func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbound.Handler, error) {
 	v := core.MustFromContext(ctx)
 	uplinkCounter, downlinkCounter := getStatCounter(v, config.Tag)
 	h := &Handler{
 		tag:             config.Tag,
 		outboundManager: v.GetFeature(outbound.ManagerType()).(outbound.Manager),
+		dnsClient:       v.GetFeature(dns.ClientType()).(dns.Client),
 		uplinkCounter:   uplinkCounter,
 		downlinkCounter: downlinkCounter,
 	}
@@ -109,50 +106,22 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 	}

 	if h.senderSettings != nil && h.senderSettings.MultiplexSettings != nil {
-		if config := h.senderSettings.MultiplexSettings; config.Enabled {
-			if config.Concurrency < 0 {
-				h.mux = &mux.ClientManager{Enabled: false}
-			}
-			if config.Concurrency == 0 {
-				config.Concurrency = 8 // same as before
-			}
-			if config.Concurrency > 0 {
-				h.mux = &mux.ClientManager{
-					Enabled: true,
-					Picker: &mux.IncrementalWorkerPicker{
-						Factory: &mux.DialingWorkerFactory{
-							Proxy:  proxyHandler,
-							Dialer: h,
-							Strategy: mux.ClientStrategy{
-								MaxConcurrency: uint32(config.Concurrency),
-								MaxConnection:  128,
-							},
-						},
+		config := h.senderSettings.MultiplexSettings
+		if config.Concurrency < 1 || config.Concurrency > 1024 {
+			return nil, newError("invalid mux concurrency: ", config.Concurrency).AtWarning()
+		}
+		h.mux = &mux.ClientManager{
+			Enabled: h.senderSettings.MultiplexSettings.Enabled,
+			Picker: &mux.IncrementalWorkerPicker{
+				Factory: &mux.DialingWorkerFactory{
+					Proxy:  proxyHandler,
+					Dialer: h,
+					Strategy: mux.ClientStrategy{
+						MaxConcurrency: config.Concurrency,
+						MaxConnection:  128,
 					},
-				}
-			}
-			if config.XudpConcurrency < 0 {
-				h.xudp = &mux.ClientManager{Enabled: false}
-			}
-			if config.XudpConcurrency == 0 {
-				h.xudp = nil // same as before
-			}
-			if config.XudpConcurrency > 0 {
-				h.xudp = &mux.ClientManager{
-					Enabled: true,
-					Picker: &mux.IncrementalWorkerPicker{
-						Factory: &mux.DialingWorkerFactory{
-							Proxy:  proxyHandler,
-							Dialer: h,
-							Strategy: mux.ClientStrategy{
-								MaxConcurrency: uint32(config.XudpConcurrency),
-								MaxConnection:  128,
-							},
-						},
-					},
-				}
-			}
-			h.udp443 = config.XudpProxyUDP443
+				},
+			},
 		}
 	}

@@ -167,58 +136,73 @@ func (h *Handler) Tag() string {

 // Dispatch implements proxy.Outbound.Dispatch.
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound.Target.Network == net.Network_UDP && outbound.OriginalTarget.Address != nil && outbound.OriginalTarget.Address != outbound.Target.Address {
-		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
-		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
-	}
-	if h.mux != nil {
-		test := func(err error) {
-			if err != nil {
-				err := newError("failed to process mux outbound traffic").Base(err)
-				session.SubmitOutboundErrorToOriginator(ctx, err)
-				err.WriteToLog(session.ExportIDToError(ctx))
-				common.Interrupt(link.Writer)
-			}
+	if h.mux != nil && (h.mux.Enabled || session.MuxPreferedFromContext(ctx)) {
+		if err := h.mux.Dispatch(ctx, link); err != nil {
+			newError("failed to process mux outbound traffic").Base(err).WriteToLog(session.ExportIDToError(ctx))
+			common.Interrupt(link.Writer)
 		}
-		if outbound.Target.Network == net.Network_UDP && outbound.Target.Port == 443 {
-			switch h.udp443 {
-			case "reject":
-				test(newError("XUDP rejected UDP/443 traffic").AtInfo())
-				return
-			case "skip":
-				goto out
-			}
-		}
-		if h.xudp != nil && outbound.Target.Network == net.Network_UDP {
-			if !h.xudp.Enabled {
-				goto out
-			}
-			test(h.xudp.Dispatch(ctx, link))
-			return
-		}
-		if h.mux.Enabled {
-			test(h.mux.Dispatch(ctx, link))
-			return
-		}
-	}
-out:
-	err := h.proxy.Process(ctx, link, h)
-	if err != nil {
-		if errors.Is(err, io.EOF) || errors.Is(err, io.ErrClosedPipe) || errors.Is(err, context.Canceled) {
-			err = nil
-		}
-	}
-	if err != nil {
-		// Ensure outbound ray is properly closed.
-		err := newError("failed to process outbound traffic").Base(err)
-		session.SubmitOutboundErrorToOriginator(ctx, err)
-		err.WriteToLog(session.ExportIDToError(ctx))
-		common.Interrupt(link.Writer)
 	} else {
-		common.Close(link.Writer)
+		outbound := session.OutboundFromContext(ctx)
+		destination := outbound.Target
+		var domainString string
+		if destination.Address.Family().IsDomain() {
+			domainString = destination.Address.Domain()
+		} else if outbound.RouteTarget.Address != nil && outbound.RouteTarget.Address.Family().IsDomain() {
+			domainString = outbound.RouteTarget.Address.Domain()
+		} else {
+			domainString = ""
+		}
+
+		if h.senderSettings != nil && h.senderSettings.DomainStrategy != proxyman.DomainStrategy_AS_IS && domainString != "" {
+			var ips []net.IP
+			var err error
+
+			option := dns.IPOption{
+				IPv4Enable: true,
+				IPv6Enable: true,
+				FakeEnable: false,
+			}
+
+			switch h.senderSettings.DomainStrategy {
+			case proxyman.DomainStrategy_USE_IP4:
+				option.IPv6Enable = false
+			case proxyman.DomainStrategy_USE_IP6:
+				option.IPv4Enable = false
+			}
+			ips, err = h.dnsClient.LookupIP(domainString, option)
+			if err == nil {
+				switch h.senderSettings.DomainStrategy {
+				case proxyman.DomainStrategy_PREFER_IP4:
+					ips = reorderAddresses(ips, false)
+				case proxyman.DomainStrategy_PREFER_IP6:
+					ips = reorderAddresses(ips, true)
+				}
+				destination.Address = net.IPAddress(ips[0])
+				outbound.Target = destination
+			}
+		}
+		err := h.proxy.Process(ctx, link, h)
+		if err != nil {
+			// Ensure outbound ray is properly closed.
+			newError("failed to process outbound traffic").Base(err).WriteToLog(session.ExportIDToError(ctx))
+			common.Interrupt(link.Writer)
+		} else {
+			common.Must(common.Close(link.Writer))
+		}
+		common.Interrupt(link.Reader)
 	}
-	common.Interrupt(link.Reader)
+}
+
+func reorderAddresses(ips []net.IP, preferIPv6 bool) []net.IP {
+	var result []net.IP
+	for i := 0; i < 2; i++ {
+		for _, ip := range ips {
+			if (preferIPv6 == (i == 0)) == (ip.To4() == nil) {
+				result = append(result, ip)
+			}
+		}
+	}
+	return result
 }

 // Address implements internet.Dialer.
@@ -229,10 +213,6 @@ func (h *Handler) Address() net.Address {
 	return h.senderSettings.Via.AsAddress()
 }

-func (h *Handler) DestIpAddress() net.IP {
-	return internet.DestIpAddress()
-}
-
 // Dial implements internet.Dialer.
 func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connection, error) {
 	if h.senderSettings != nil {
@@ -273,17 +253,8 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 		}
 	}

-	if conn, err := h.getUoTConnection(ctx, dest); err != os.ErrInvalid {
-		return conn, err
-	}
-
 	conn, err := internet.Dial(ctx, dest, h.streamSettings)
-	conn = h.getStatCouterConnection(conn)
-	outbound := session.OutboundFromContext(ctx)
-	if outbound != nil {
-		outbound.Conn = conn
-	}
-	return conn, err
+	return h.getStatCouterConnection(conn), err
 }

 func (h *Handler) getStatCouterConnection(conn stat.Connection) stat.Connection {
--- a/app/proxyman/outbound/handler_test.go
+++ b/app/proxyman/outbound/handler_test.go
@@ -2,14 +2,11 @@ package outbound_test

 import (
 	"context"
-	"fmt"
-	"sync"
-	"sync/atomic"
 	"testing"
-	"time"
+
+	"github.com/xtls/xray-core/transport/internet/stat"

 	"github.com/xtls/xray-core/app/policy"
-	"github.com/xtls/xray-core/app/proxyman"
 	. "github.com/xtls/xray-core/app/proxyman/outbound"
 	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common/net"
@@ -17,7 +14,6 @@ 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/stat"
 )

 func TestInterfaces(t *testing.T) {
@@ -83,91 +79,3 @@ func TestOutboundWithStatCounter(t *testing.T) {
 		t.Errorf("Expected conn to be CounterConnection")
 	}
 }
-
-func TestTagsCache(t *testing.T) {
-
-	test_duration := 10 * time.Second
-	threads_num := 50
-	delay := 10 * time.Millisecond
-	tags_prefix := "node"
-
-	tags := sync.Map{}
-	counter := atomic.Uint64{}
-
-	ohm, err := New(context.Background(), &proxyman.OutboundConfig{})
-	if err != nil {
-		t.Error("failed to create outbound handler manager")
-	}
-	config := &core.Config{
-		App: []*serial.TypedMessage{},
-	}
-	v, _ := core.New(config)
-	v.AddFeature(ohm)
-	ctx := context.WithValue(context.Background(), xrayKey, v)
-
-	stop_add_rm := false
-	wg_add_rm := sync.WaitGroup{}
-	addHandlers := func() {
-		defer wg_add_rm.Done()
-		for !stop_add_rm {
-			time.Sleep(delay)
-			idx := counter.Add(1)
-			tag := fmt.Sprintf("%s%d", tags_prefix, idx)
-			cfg := &core.OutboundHandlerConfig{
-				Tag:           tag,
-				ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
-			}
-			if h, err := NewHandler(ctx, cfg); err == nil {
-				if err := ohm.AddHandler(ctx, h); err == nil {
-					// t.Log("add handler:", tag)
-					tags.Store(tag, nil)
-				} else {
-					t.Error("failed to add handler:", tag)
-				}
-			} else {
-				t.Error("failed to create handler:", tag)
-			}
-		}
-	}
-
-	rmHandlers := func() {
-		defer wg_add_rm.Done()
-		for !stop_add_rm {
-			time.Sleep(delay)
-			tags.Range(func(key interface{}, value interface{}) bool {
-				if _, ok := tags.LoadAndDelete(key); ok {
-					// t.Log("remove handler:", key)
-					ohm.RemoveHandler(ctx, key.(string))
-					return false
-				}
-				return true
-			})
-		}
-	}
-
-	selectors := []string{tags_prefix}
-	wg_get := sync.WaitGroup{}
-	stop_get := false
-	getTags := func() {
-		defer wg_get.Done()
-		for !stop_get {
-			time.Sleep(delay)
-			_ = ohm.Select(selectors)
-			// t.Logf("get tags: %v", tag)
-		}
-	}
-
-	for i := 0; i < threads_num; i++ {
-		wg_add_rm.Add(2)
-		go rmHandlers()
-		go addHandlers()
-		wg_get.Add(1)
-		go getTags()
-	}
-
-	time.Sleep(test_duration)
-	stop_add_rm = true
-	wg_add_rm.Wait()
-	stop_get = true
-	wg_get.Wait()
-}
--- a/app/proxyman/outbound/outbound.go
+++ b/app/proxyman/outbound/outbound.go
@@ -4,7 +4,6 @@ package outbound

 import (
 	"context"
-	"sort"
 	"strings"
 	"sync"

@@ -22,14 +21,12 @@ type Manager struct {
 	taggedHandler    map[string]outbound.Handler
 	untaggedHandlers []outbound.Handler
 	running          bool
-	tagsCache        *sync.Map
 }

 // New creates a new Manager.
 func New(ctx context.Context, config *proxyman.OutboundConfig) (*Manager, error) {
 	m := &Manager{
 		taggedHandler: make(map[string]outbound.Handler),
-		tagsCache:     &sync.Map{},
 	}
 	return m, nil
 }
@@ -106,8 +103,6 @@ func (m *Manager) AddHandler(ctx context.Context, handler outbound.Handler) erro
 	m.access.Lock()
 	defer m.access.Unlock()

-	m.tagsCache = &sync.Map{}
-
 	if m.defaultHandler == nil {
 		m.defaultHandler = handler
 	}
@@ -137,8 +132,6 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
 	m.access.Lock()
 	defer m.access.Unlock()

-	m.tagsCache = &sync.Map{}
-
 	delete(m.taggedHandler, tag)
 	if m.defaultHandler != nil && m.defaultHandler.Tag() == tag {
 		m.defaultHandler = nil
@@ -149,29 +142,24 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {

 // Select implements outbound.HandlerSelector.
 func (m *Manager) Select(selectors []string) []string {
-
-	key := strings.Join(selectors, ",")
-	if cache, ok := m.tagsCache.Load(key); ok {
-		return cache.([]string)
-	}
-
 	m.access.RLock()
 	defer m.access.RUnlock()

 	tags := make([]string, 0, len(selectors))

 	for tag := range m.taggedHandler {
+		match := false
 		for _, selector := range selectors {
 			if strings.HasPrefix(tag, selector) {
-				tags = append(tags, tag)
+				match = true
 				break
 			}
 		}
+		if match {
+			tags = append(tags, tag)
+		}
 	}

-	sort.Strings(tags)
-	m.tagsCache.Store(key, tags)
-
 	return tags
 }

--- a/app/proxyman/outbound/uot.go
+++ b/app/proxyman/outbound/uot.go
@@ -1,34 +0,0 @@
-package outbound
-
-import (
-	"context"
-	"os"
-
-	"github.com/sagernet/sing/common/uot"
-	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/transport/internet"
-	"github.com/xtls/xray-core/transport/internet/stat"
-)
-
-func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (stat.Connection, error) {
-	if dest.Address == nil {
-		return nil, newError("nil destination address")
-	}
-	if !dest.Address.Family().IsDomain() {
-		return nil, os.ErrInvalid
-	}
-	var uotVersion int
-	if dest.Address.Domain() == uot.MagicAddress {
-		uotVersion = uot.Version
-	} else if dest.Address.Domain() == uot.LegacyMagicAddress {
-		uotVersion = uot.LegacyVersion
-	} else {
-		return nil, os.ErrInvalid
-	}
-	packetConn, err := internet.ListenSystemPacket(ctx, &net.UDPAddr{IP: net.AnyIP.IP(), Port: 0}, h.streamSettings.SocketSettings)
-	if err != nil {
-		return nil, newError("unable to listen socket").Base(err)
-	}
-	conn := uot.NewServerConn(packetConn, uotVersion)
-	return h.getStatCouterConnection(conn), nil
-}
--- a/app/reverse/bridge.go
+++ b/app/reverse/bridge.go
@@ -4,6 +4,8 @@ import (
 	"context"
 	"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"
@@ -11,7 +13,6 @@ import (
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
-	"google.golang.org/protobuf/proto"
 )

 // Bridge is a component in reverse proxy, that relays connections from Portal to local address.
--- a/app/reverse/config.pb.go
+++ b/app/reverse/config.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/reverse/config.proto

 package reverse
--- a/app/reverse/portal.go
+++ b/app/reverse/portal.go
@@ -5,6 +5,8 @@ import (
 	"sync"
 	"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"
@@ -14,7 +16,6 @@ import (
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
-	"google.golang.org/protobuf/proto"
 )

 type Portal struct {
--- a/app/reverse/reverse.go
+++ b/app/reverse/reverse.go
@@ -14,7 +14,7 @@ import (
 )

 const (
-	internalDomain = "reverse.internal.v2fly.org" // make reverse proxy compatible with v2fly
+	internalDomain = "reverse.internal.example.com"
 )

 func isDomain(dest net.Destination, domain string) bool {
--- a/app/router/balancing.go
+++ b/app/router/balancing.go
@@ -2,8 +2,8 @@ package router

 import (
 	"context"
-	sync "sync"

+	"github.com/xtls/xray-core/common/dice"
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 )
@@ -12,108 +12,40 @@ type BalancingStrategy interface {
 	PickOutbound([]string) string
 }

-type BalancingPrincipleTarget interface {
-	GetPrincipleTarget([]string) []string
-}
+type RandomStrategy struct{}

-type RoundRobinStrategy struct {
-	mu    sync.Mutex
-	index int
-}
-
-func (s *RoundRobinStrategy) PickOutbound(tags []string) string {
+func (s *RandomStrategy) PickOutbound(tags []string) string {
 	n := len(tags)
 	if n == 0 {
 		panic("0 tags")
 	}

-	s.mu.Lock()
-	defer s.mu.Unlock()
-	tag := tags[s.index%n]
-	s.index = (s.index + 1) % n
-	return tag
+	return tags[dice.Roll(n)]
 }

 type Balancer struct {
-	selectors   []string
-	strategy    BalancingStrategy
-	ohm         outbound.Manager
-	fallbackTag string
-
-	override override
+	selectors []string
+	strategy  BalancingStrategy
+	ohm       outbound.Manager
 }

-// PickOutbound picks the tag of a outbound
 func (b *Balancer) PickOutbound() (string, error) {
-	candidates, err := b.SelectOutbounds()
-	if err != nil {
-		if b.fallbackTag != "" {
-			newError("fallback to [", b.fallbackTag, "], due to error: ", err).AtInfo().WriteToLog()
-			return b.fallbackTag, nil
-		}
-		return "", err
+	hs, ok := b.ohm.(outbound.HandlerSelector)
+	if !ok {
+		return "", newError("outbound.Manager is not a HandlerSelector")
 	}
-	var tag string
-	if o := b.override.Get(); o != "" {
-		tag = o
-	} else {
-		tag = b.strategy.PickOutbound(candidates)
+	tags := hs.Select(b.selectors)
+	if len(tags) == 0 {
+		return "", newError("no available outbounds selected")
 	}
+	tag := b.strategy.PickOutbound(tags)
 	if tag == "" {
-		if b.fallbackTag != "" {
-			newError("fallback to [", b.fallbackTag, "], due to empty tag returned").AtInfo().WriteToLog()
-			return b.fallbackTag, nil
-		}
-		// will use default handler
 		return "", newError("balancing strategy returns empty tag")
 	}
 	return tag, nil
 }
-
 func (b *Balancer) InjectContext(ctx context.Context) {
 	if contextReceiver, ok := b.strategy.(extension.ContextReceiver); ok {
 		contextReceiver.InjectContext(ctx)
 	}
 }
-
-// SelectOutbounds select outbounds with selectors of the Balancer
-func (b *Balancer) SelectOutbounds() ([]string, error) {
-	hs, ok := b.ohm.(outbound.HandlerSelector)
-	if !ok {
-		return nil, newError("outbound.Manager is not a HandlerSelector")
-	}
-	tags := hs.Select(b.selectors)
-	return tags, nil
-}
-
-// GetPrincipleTarget implements routing.BalancerPrincipleTarget
-func (r *Router) GetPrincipleTarget(tag string) ([]string, error) {
-	if b, ok := r.balancers[tag]; ok {
-		if s, ok := b.strategy.(BalancingPrincipleTarget); ok {
-			candidates, err := b.SelectOutbounds()
-			if err != nil {
-				return nil, newError("unable to select outbounds").Base(err)
-			}
-			return s.GetPrincipleTarget(candidates), nil
-		}
-		return nil, newError("unsupported GetPrincipleTarget")
-	}
-	return nil, newError("cannot find tag")
-}
-
-// SetOverrideTarget implements routing.BalancerOverrider
-func (r *Router) SetOverrideTarget(tag, target string) error {
-	if b, ok := r.balancers[tag]; ok {
-		b.override.Put(target)
-		return nil
-	}
-	return newError("cannot find tag")
-}
-
-// GetOverrideTarget implements routing.BalancerOverrider
-func (r *Router) GetOverrideTarget(tag string) (string, error) {
-	if b, ok := r.balancers[tag]; ok {
-		return b.override.Get(), nil
-	}
-	return "", newError("cannot find tag")
-}
--- a/app/router/balancing_override.go
+++ b/app/router/balancing_override.go
@@ -1,50 +0,0 @@
-package router
-
-import (
-	sync "sync"
-)
-
-func (r *Router) OverrideBalancer(balancer string, target string) error {
-	var b *Balancer
-	for tag, bl := range r.balancers {
-		if tag == balancer {
-			b = bl
-			break
-		}
-	}
-	if b == nil {
-		return newError("balancer '", balancer, "' not found")
-	}
-	b.override.Put(target)
-	return nil
-}
-
-type overrideSettings struct {
-	target string
-}
-
-type override struct {
-	access   sync.RWMutex
-	settings overrideSettings
-}
-
-// Get gets the override settings
-func (o *override) Get() string {
-	o.access.RLock()
-	defer o.access.RUnlock()
-	return o.settings.target
-}
-
-// Put updates the override settings
-func (o *override) Put(target string) {
-	o.access.Lock()
-	defer o.access.Unlock()
-	o.settings.target = target
-}
-
-// Clear clears the override settings
-func (o *override) Clear() {
-	o.access.Lock()
-	defer o.access.Unlock()
-	o.settings.target = ""
-}
--- a/app/router/command/command.go
+++ b/app/router/command/command.go
@@ -6,11 +6,12 @@ import (
 	"context"
 	"time"

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

 // routingServer is an implementation of RoutingService.
@@ -19,41 +20,6 @@ type routingServer struct {
 	routingStats stats.Channel
 }

-func (s *routingServer) GetBalancerInfo(ctx context.Context, request *GetBalancerInfoRequest) (*GetBalancerInfoResponse, error) {
-	var ret GetBalancerInfoResponse
-	ret.Balancer = &BalancerMsg{}
-	if bo, ok := s.router.(routing.BalancerOverrider); ok {
-		{
-			res, err := bo.GetOverrideTarget(request.GetTag())
-			if err != nil {
-				return nil, err
-			}
-			ret.Balancer.Override = &OverrideInfo{
-				Target: res,
-			}
-		}
-	}
-
-	if pt, ok := s.router.(routing.BalancerPrincipleTarget); ok {
-		{
-			res, err := pt.GetPrincipleTarget(request.GetTag())
-			if err != nil {
-				newError("unable to obtain principle target").Base(err).AtInfo().WriteToLog()
-			} else {
-				ret.Balancer.PrincipleTarget = &PrincipleTargetInfo{Tag: res}
-			}
-		}
-	}
-	return &ret, nil
-}
-
-func (s *routingServer) OverrideBalancerTarget(ctx context.Context, request *OverrideBalancerTargetRequest) (*OverrideBalancerTargetResponse, error) {
-	if bo, ok := s.router.(routing.BalancerOverrider); ok {
-		return &OverrideBalancerTargetResponse{}, bo.SetOverrideTarget(request.BalancerTag, request.Target)
-	}
-	return nil, newError("unsupported router implementation")
-}
-
 // NewRoutingServer creates a statistics service with statistics manager.
 func NewRoutingServer(router routing.Router, routingStats stats.Channel) RoutingServiceServer {
 	return &routingServer{
--- a/app/router/command/command.pb.go
+++ b/app/router/command/command.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/router/command/command.proto

 package command
@@ -163,19 +163,18 @@ func (x *RoutingContext) GetOutboundTag() string {
 // opened by xray-core.
 // * FieldSelectors selects a subset of fields in routing statistics to return.
 // Valid selectors:
-//   - inbound: Selects connection's inbound tag.
-//   - network: Selects connection's network.
-//   - ip: Equivalent as "ip_source" and "ip_target", selects both source and
-//     target IP.
-//   - port: Equivalent as "port_source" and "port_target", selects both source
-//     and target port.
-//   - domain: Selects target domain.
-//   - protocol: Select connection's protocol.
-//   - user: Select connection's inbound user email.
-//   - attributes: Select connection's additional attributes.
-//   - outbound: Equivalent as "outbound" and "outbound_group", select both
-//     outbound tag and outbound group tags.
-//
+//  - inbound: Selects connection's inbound tag.
+//  - network: Selects connection's network.
+//  - ip: Equivalent as "ip_source" and "ip_target", selects both source and
+//  target IP.
+//  - port: Equivalent as "port_source" and "port_target", selects both source
+//  and target port.
+//  - domain: Selects target domain.
+//  - protocol: Select connection's protocol.
+//  - user: Select connection's inbound user email.
+//  - attributes: Select connection's additional attributes.
+//  - outbound: Equivalent as "outbound" and "outbound_group", select both
+//  outbound tag and outbound group tags.
 // * If FieldSelectors is left empty, all fields will be returned.
 type SubscribeRoutingStatsRequest struct {
 	state         protoimpl.MessageState
@@ -294,342 +293,6 @@ func (x *TestRouteRequest) GetPublishResult() bool {
 	return false
 }

-type PrincipleTargetInfo struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tag []string `protobuf:"bytes,1,rep,name=tag,proto3" json:"tag,omitempty"`
-}
-
-func (x *PrincipleTargetInfo) Reset() {
-	*x = PrincipleTargetInfo{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *PrincipleTargetInfo) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*PrincipleTargetInfo) ProtoMessage() {}
-
-func (x *PrincipleTargetInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[3]
-	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 PrincipleTargetInfo.ProtoReflect.Descriptor instead.
-func (*PrincipleTargetInfo) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{3}
-}
-
-func (x *PrincipleTargetInfo) GetTag() []string {
-	if x != nil {
-		return x.Tag
-	}
-	return nil
-}
-
-type OverrideInfo struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Target string `protobuf:"bytes,2,opt,name=target,proto3" json:"target,omitempty"`
-}
-
-func (x *OverrideInfo) Reset() {
-	*x = OverrideInfo{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OverrideInfo) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OverrideInfo) ProtoMessage() {}
-
-func (x *OverrideInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[4]
-	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 OverrideInfo.ProtoReflect.Descriptor instead.
-func (*OverrideInfo) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{4}
-}
-
-func (x *OverrideInfo) GetTarget() string {
-	if x != nil {
-		return x.Target
-	}
-	return ""
-}
-
-type BalancerMsg struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Override        *OverrideInfo        `protobuf:"bytes,5,opt,name=override,proto3" json:"override,omitempty"`
-	PrincipleTarget *PrincipleTargetInfo `protobuf:"bytes,6,opt,name=principle_target,json=principleTarget,proto3" json:"principle_target,omitempty"`
-}
-
-func (x *BalancerMsg) Reset() {
-	*x = BalancerMsg{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *BalancerMsg) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*BalancerMsg) ProtoMessage() {}
-
-func (x *BalancerMsg) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[5]
-	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 BalancerMsg.ProtoReflect.Descriptor instead.
-func (*BalancerMsg) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{5}
-}
-
-func (x *BalancerMsg) GetOverride() *OverrideInfo {
-	if x != nil {
-		return x.Override
-	}
-	return nil
-}
-
-func (x *BalancerMsg) GetPrincipleTarget() *PrincipleTargetInfo {
-	if x != nil {
-		return x.PrincipleTarget
-	}
-	return nil
-}
-
-type GetBalancerInfoRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
-}
-
-func (x *GetBalancerInfoRequest) Reset() {
-	*x = GetBalancerInfoRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetBalancerInfoRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetBalancerInfoRequest) ProtoMessage() {}
-
-func (x *GetBalancerInfoRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[6]
-	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 GetBalancerInfoRequest.ProtoReflect.Descriptor instead.
-func (*GetBalancerInfoRequest) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{6}
-}
-
-func (x *GetBalancerInfoRequest) GetTag() string {
-	if x != nil {
-		return x.Tag
-	}
-	return ""
-}
-
-type GetBalancerInfoResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Balancer *BalancerMsg `protobuf:"bytes,1,opt,name=balancer,proto3" json:"balancer,omitempty"`
-}
-
-func (x *GetBalancerInfoResponse) Reset() {
-	*x = GetBalancerInfoResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetBalancerInfoResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetBalancerInfoResponse) ProtoMessage() {}
-
-func (x *GetBalancerInfoResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[7]
-	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 GetBalancerInfoResponse.ProtoReflect.Descriptor instead.
-func (*GetBalancerInfoResponse) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{7}
-}
-
-func (x *GetBalancerInfoResponse) GetBalancer() *BalancerMsg {
-	if x != nil {
-		return x.Balancer
-	}
-	return nil
-}
-
-type OverrideBalancerTargetRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	BalancerTag string `protobuf:"bytes,1,opt,name=balancerTag,proto3" json:"balancerTag,omitempty"`
-	Target      string `protobuf:"bytes,2,opt,name=target,proto3" json:"target,omitempty"`
-}
-
-func (x *OverrideBalancerTargetRequest) Reset() {
-	*x = OverrideBalancerTargetRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OverrideBalancerTargetRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OverrideBalancerTargetRequest) ProtoMessage() {}
-
-func (x *OverrideBalancerTargetRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[8]
-	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 OverrideBalancerTargetRequest.ProtoReflect.Descriptor instead.
-func (*OverrideBalancerTargetRequest) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{8}
-}
-
-func (x *OverrideBalancerTargetRequest) GetBalancerTag() string {
-	if x != nil {
-		return x.BalancerTag
-	}
-	return ""
-}
-
-func (x *OverrideBalancerTargetRequest) GetTarget() string {
-	if x != nil {
-		return x.Target
-	}
-	return ""
-}
-
-type OverrideBalancerTargetResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *OverrideBalancerTargetResponse) Reset() {
-	*x = OverrideBalancerTargetResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OverrideBalancerTargetResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OverrideBalancerTargetResponse) ProtoMessage() {}
-
-func (x *OverrideBalancerTargetResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[9]
-	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 OverrideBalancerTargetResponse.ProtoReflect.Descriptor instead.
-func (*OverrideBalancerTargetResponse) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{9}
-}
-
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -639,7 +302,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_command_command_proto_msgTypes[10]
+		mi := &file_app_router_command_command_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -652,7 +315,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}

 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_command_command_proto_msgTypes[10]
+	mi := &file_app_router_command_command_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -665,7 +328,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {

 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_router_command_command_proto_rawDescGZIP(), []int{10}
+	return file_app_router_command_command_proto_rawDescGZIP(), []int{3}
 }

 var File_app_router_command_command_proto protoreflect.FileDescriptor
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 }

 var (
@@ -812,42 +426,28 @@ func file_app_router_command_command_proto_rawDescGZIP() []byte {
 	return file_app_router_command_command_proto_rawDescData
 }

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

 func init() { file_app_router_command_command_proto_init() }
@@ -893,90 +493,6 @@ func file_app_router_command_command_proto_init() {
 			}
 		}
 		file_app_router_command_command_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PrincipleTargetInfo); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OverrideInfo); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BalancerMsg); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetBalancerInfoRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetBalancerInfoResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OverrideBalancerTargetRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OverrideBalancerTargetResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_command_command_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Config); i {
 			case 0:
 				return &v.state
@@ -995,7 +511,7 @@ func file_app_router_command_command_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_router_command_command_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
--- a/app/router/command/command.proto
+++ b/app/router/command/command.proto
@@ -60,41 +60,10 @@ message TestRouteRequest {
  bool PublishResult = 3;
 }

-message PrincipleTargetInfo {
-  repeated string tag = 1;
-}
-
-message OverrideInfo {
-  string target = 2;
-}
-
-message BalancerMsg {
-  OverrideInfo override = 5;
-  PrincipleTargetInfo principle_target = 6;
-}
-
-message GetBalancerInfoRequest {
-  string tag = 1;
-}
-
-message GetBalancerInfoResponse {
-  BalancerMsg balancer = 1;
-}
-
-message OverrideBalancerTargetRequest {
-  string balancerTag = 1;
-  string target = 2;
-}
-
-message OverrideBalancerTargetResponse {}
-
 service RoutingService {
  rpc SubscribeRoutingStats(SubscribeRoutingStatsRequest)
      returns (stream RoutingContext) {}
  rpc TestRoute(TestRouteRequest) returns (RoutingContext) {}
-
-  rpc GetBalancerInfo(GetBalancerInfoRequest) returns (GetBalancerInfoResponse){}
-  rpc OverrideBalancerTarget(OverrideBalancerTargetRequest) returns (OverrideBalancerTargetResponse) {}
 }

 message Config {}
--- a/app/router/command/command_grpc.pb.go
+++ b/app/router/command/command_grpc.pb.go
@@ -1,8 +1,4 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.23.1
-// source: app/router/command/command.proto

 package command

@@ -18,21 +14,12 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7

-const (
-	RoutingService_SubscribeRoutingStats_FullMethodName  = "/xray.app.router.command.RoutingService/SubscribeRoutingStats"
-	RoutingService_TestRoute_FullMethodName              = "/xray.app.router.command.RoutingService/TestRoute"
-	RoutingService_GetBalancerInfo_FullMethodName        = "/xray.app.router.command.RoutingService/GetBalancerInfo"
-	RoutingService_OverrideBalancerTarget_FullMethodName = "/xray.app.router.command.RoutingService/OverrideBalancerTarget"
-)
-
 // RoutingServiceClient is the client API for RoutingService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type RoutingServiceClient interface {
 	SubscribeRoutingStats(ctx context.Context, in *SubscribeRoutingStatsRequest, opts ...grpc.CallOption) (RoutingService_SubscribeRoutingStatsClient, error)
 	TestRoute(ctx context.Context, in *TestRouteRequest, opts ...grpc.CallOption) (*RoutingContext, error)
-	GetBalancerInfo(ctx context.Context, in *GetBalancerInfoRequest, opts ...grpc.CallOption) (*GetBalancerInfoResponse, error)
-	OverrideBalancerTarget(ctx context.Context, in *OverrideBalancerTargetRequest, opts ...grpc.CallOption) (*OverrideBalancerTargetResponse, error)
 }

 type routingServiceClient struct {
@@ -44,7 +31,7 @@ func NewRoutingServiceClient(cc grpc.ClientConnInterface) RoutingServiceClient {
 }

 func (c *routingServiceClient) SubscribeRoutingStats(ctx context.Context, in *SubscribeRoutingStatsRequest, opts ...grpc.CallOption) (RoutingService_SubscribeRoutingStatsClient, error) {
-	stream, err := c.cc.NewStream(ctx, &RoutingService_ServiceDesc.Streams[0], RoutingService_SubscribeRoutingStats_FullMethodName, opts...)
+	stream, err := c.cc.NewStream(ctx, &RoutingService_ServiceDesc.Streams[0], "/xray.app.router.command.RoutingService/SubscribeRoutingStats", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -77,25 +64,7 @@ func (x *routingServiceSubscribeRoutingStatsClient) Recv() (*RoutingContext, err

 func (c *routingServiceClient) TestRoute(ctx context.Context, in *TestRouteRequest, opts ...grpc.CallOption) (*RoutingContext, error) {
 	out := new(RoutingContext)
-	err := c.cc.Invoke(ctx, RoutingService_TestRoute_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *routingServiceClient) GetBalancerInfo(ctx context.Context, in *GetBalancerInfoRequest, opts ...grpc.CallOption) (*GetBalancerInfoResponse, error) {
-	out := new(GetBalancerInfoResponse)
-	err := c.cc.Invoke(ctx, RoutingService_GetBalancerInfo_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *routingServiceClient) OverrideBalancerTarget(ctx context.Context, in *OverrideBalancerTargetRequest, opts ...grpc.CallOption) (*OverrideBalancerTargetResponse, error) {
-	out := new(OverrideBalancerTargetResponse)
-	err := c.cc.Invoke(ctx, RoutingService_OverrideBalancerTarget_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.router.command.RoutingService/TestRoute", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -108,8 +77,6 @@ func (c *routingServiceClient) OverrideBalancerTarget(ctx context.Context, in *O
 type RoutingServiceServer interface {
 	SubscribeRoutingStats(*SubscribeRoutingStatsRequest, RoutingService_SubscribeRoutingStatsServer) error
 	TestRoute(context.Context, *TestRouteRequest) (*RoutingContext, error)
-	GetBalancerInfo(context.Context, *GetBalancerInfoRequest) (*GetBalancerInfoResponse, error)
-	OverrideBalancerTarget(context.Context, *OverrideBalancerTargetRequest) (*OverrideBalancerTargetResponse, error)
 	mustEmbedUnimplementedRoutingServiceServer()
 }

@@ -123,12 +90,6 @@ func (UnimplementedRoutingServiceServer) SubscribeRoutingStats(*SubscribeRouting
 func (UnimplementedRoutingServiceServer) TestRoute(context.Context, *TestRouteRequest) (*RoutingContext, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method TestRoute not implemented")
 }
-func (UnimplementedRoutingServiceServer) GetBalancerInfo(context.Context, *GetBalancerInfoRequest) (*GetBalancerInfoResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetBalancerInfo not implemented")
-}
-func (UnimplementedRoutingServiceServer) OverrideBalancerTarget(context.Context, *OverrideBalancerTargetRequest) (*OverrideBalancerTargetResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method OverrideBalancerTarget not implemented")
-}
 func (UnimplementedRoutingServiceServer) mustEmbedUnimplementedRoutingServiceServer() {}

 // UnsafeRoutingServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -173,7 +134,7 @@ func _RoutingService_TestRoute_Handler(srv interface{}, ctx context.Context, dec
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: RoutingService_TestRoute_FullMethodName,
+		FullMethod: "/xray.app.router.command.RoutingService/TestRoute",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(RoutingServiceServer).TestRoute(ctx, req.(*TestRouteRequest))
@@ -181,42 +142,6 @@ func _RoutingService_TestRoute_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }

-func _RoutingService_GetBalancerInfo_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetBalancerInfoRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RoutingServiceServer).GetBalancerInfo(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: RoutingService_GetBalancerInfo_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RoutingServiceServer).GetBalancerInfo(ctx, req.(*GetBalancerInfoRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _RoutingService_OverrideBalancerTarget_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(OverrideBalancerTargetRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(RoutingServiceServer).OverrideBalancerTarget(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: RoutingService_OverrideBalancerTarget_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RoutingServiceServer).OverrideBalancerTarget(ctx, req.(*OverrideBalancerTargetRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 // RoutingService_ServiceDesc is the grpc.ServiceDesc for RoutingService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -228,14 +153,6 @@ var RoutingService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "TestRoute",
 			Handler:    _RoutingService_TestRoute_Handler,
 		},
-		{
-			MethodName: "GetBalancerInfo",
-			Handler:    _RoutingService_GetBalancerInfo_Handler,
-		},
-		{
-			MethodName: "OverrideBalancerTarget",
-			Handler:    _RoutingService_OverrideBalancerTarget_Handler,
-		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
--- a/app/router/command/command_test.go
+++ b/app/router/command/command_test.go
@@ -8,6 +8,9 @@ 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"
@@ -15,8 +18,6 @@ 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) {
@@ -283,7 +284,7 @@ func TestSerivceTestRoute(t *testing.T) {
 	r := new(router.Router)
 	mockCtl := gomock.NewController(t)
 	defer mockCtl.Finish()
-	common.Must(r.Init(context.TODO(), &router.Config{
+	common.Must(r.Init(&router.Config{
 		Rule: []*router.RoutingRule{
 			{
 				InboundTag: []string{"in"},
@@ -318,7 +319,7 @@ func TestSerivceTestRoute(t *testing.T) {
 				TargetTag: &router.RoutingRule_Tag{Tag: "out"},
 			},
 		},
-	}, mocks.NewDNSClient(mockCtl), mocks.NewOutboundManager(mockCtl), nil))
+	}, mocks.NewDNSClient(mockCtl), mocks.NewOutboundManager(mockCtl)))

 	lis := bufconn.Listen(1024 * 1024)
 	bufDialer := func(context.Context, string) (net.Conn, error) {
--- a/app/router/command/config.go
+++ b/app/router/command/config.go
@@ -28,6 +28,14 @@ func (c routingContext) GetTargetPort() net.Port {
 	return net.Port(c.RoutingContext.GetTargetPort())
 }

+func (c routingContext) GetUid() uint32 {
+	return 0
+}
+
+func (c routingContext) GetAppStatus() []string {
+	return nil
+}
+
 // 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
--- a/app/router/condition.go
+++ b/app/router/condition.go
@@ -1,9 +1,11 @@
 package router

 import (
-	"regexp"
 	"strings"

+	"go.starlark.net/starlark"
+	"go.starlark.net/syntax"
+
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/features/routing"
@@ -283,22 +285,44 @@ func (m *ProtocolMatcher) Apply(ctx routing.Context) bool {
 }

 type AttributeMatcher struct {
-	configuredKeys map[string]*regexp.Regexp
+	program *starlark.Program
+}
+
+func NewAttributeMatcher(code string) (*AttributeMatcher, error) {
+	starFile, err := syntax.Parse("attr.star", "satisfied=("+code+")", 0)
+	if err != nil {
+		return nil, newError("attr rule").Base(err)
+	}
+	p, err := starlark.FileProgram(starFile, func(name string) bool {
+		return name == "attrs"
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &AttributeMatcher{
+		program: p,
+	}, nil
 }

 // Match implements attributes matching.
 func (m *AttributeMatcher) Match(attrs map[string]string) bool {
-	// header keys are case insensitive most likely. So we do a convert
-	httpHeaders := make(map[string]string)
+	attrsDict := new(starlark.Dict)
 	for key, value := range attrs {
-		httpHeaders[strings.ToLower(key)] = value
+		attrsDict.SetKey(starlark.String(key), starlark.String(value))
 	}
-	for key, regex := range m.configuredKeys {
-		if a, ok := httpHeaders[key]; !ok || !regex.MatchString(a) {
-			return false
-		}
+
+	predefined := make(starlark.StringDict)
+	predefined["attrs"] = attrsDict
+
+	thread := &starlark.Thread{
+		Name: "matcher",
 	}
-	return true
+	results, err := m.program.Init(thread, predefined)
+	if err != nil {
+		newError("attr matcher").Base(err).WriteToLog()
+	}
+	satisfied := results["satisfied"]
+	return satisfied != nil && bool(satisfied.Truth())
 }

 // Apply implements Condition.
@@ -309,3 +333,49 @@ func (m *AttributeMatcher) Apply(ctx routing.Context) bool {
 	}
 	return m.Match(attributes)
 }
+
+type UidMatcher struct {
+	uidList map[uint32]bool
+}
+
+func NewUidMatcher(list *net.UidList) *UidMatcher {
+	m := UidMatcher{uidList: map[uint32]bool{}}
+	for _, uid := range list.Uid {
+		m.uidList[uid] = true
+	}
+	return &m
+}
+
+func (u UidMatcher) Apply(ctx routing.Context) bool {
+	return u.uidList[ctx.GetUid()]
+}
+
+type AppStatusMatcher struct {
+	appStatus map[string]bool
+}
+
+func NewAppStatusMatcher(appStatus []string) *AppStatusMatcher {
+	m := &AppStatusMatcher{
+		appStatus: map[string]bool{},
+	}
+
+	for _, status := range appStatus {
+		m.appStatus[status] = true
+	}
+
+	return m
+}
+
+// Apply implements Condition.
+func (m *AppStatusMatcher) Apply(ctx routing.Context) bool {
+	status := ctx.GetAppStatus()
+	if len(status) == 0 {
+		return false
+	}
+	for _, s := range status {
+		if !m.appStatus[s] {
+			return false
+		}
+	}
+	return true
+}
--- a/app/router/condition_geoip.go
+++ b/app/router/condition_geoip.go
@@ -1,49 +1,81 @@
 package router

 import (
-	"net/netip"
-	"strconv"
+	"encoding/binary"
+	"sort"

 	"github.com/xtls/xray-core/common/net"
-	"go4.org/netipx"
 )

+type ipv6 struct {
+	a uint64
+	b uint64
+}
+
 type GeoIPMatcher struct {
 	countryCode  string
 	reverseMatch bool
-	ip4          *netipx.IPSet
-	ip6          *netipx.IPSet
+	ip4          []uint32
+	prefix4      []uint8
+	ip6          []ipv6
+	prefix6      []uint8
+}
+
+func normalize4(ip uint32, prefix uint8) uint32 {
+	return (ip >> (32 - prefix)) << (32 - prefix)
+}
+
+func normalize6(ip ipv6, prefix uint8) ipv6 {
+	if prefix <= 64 {
+		ip.a = (ip.a >> (64 - prefix)) << (64 - prefix)
+		ip.b = 0
+	} else {
+		ip.b = (ip.b >> (128 - prefix)) << (128 - prefix)
+	}
+	return ip
 }

 func (m *GeoIPMatcher) Init(cidrs []*CIDR) error {
-	var builder4, builder6 netipx.IPSetBuilder
+	ip4Count := 0
+	ip6Count := 0

 	for _, cidr := range cidrs {
-		ip := net.IP(cidr.GetIp())
-		ipPrefixString := ip.String() + "/" + strconv.Itoa(int(cidr.GetPrefix()))
-		ipPrefix, err := netip.ParsePrefix(ipPrefixString)
-		if err != nil {
-			return err
-		}
-
+		ip := cidr.Ip
 		switch len(ip) {
-		case net.IPv4len:
-			builder4.AddPrefix(ipPrefix)
-		case net.IPv6len:
-			builder6.AddPrefix(ipPrefix)
+		case 4:
+			ip4Count++
+		case 16:
+			ip6Count++
+		default:
+			return newError("unexpect ip length: ", len(ip))
 		}
 	}

-	if ip4, err := builder4.IPSet(); err != nil {
-		return err
-	} else {
-		m.ip4 = ip4
-	}
+	cidrList := CIDRList(cidrs)
+	sort.Sort(&cidrList)

-	if ip6, err := builder6.IPSet(); err != nil {
-		return err
-	} else {
-		m.ip6 = ip6
+	m.ip4 = make([]uint32, 0, ip4Count)
+	m.prefix4 = make([]uint8, 0, ip4Count)
+	m.ip6 = make([]ipv6, 0, ip6Count)
+	m.prefix6 = make([]uint8, 0, ip6Count)
+
+	for _, cidr := range cidrList {
+		ip := cidr.Ip
+		prefix := uint8(cidr.Prefix)
+		switch len(ip) {
+		case 4:
+			m.ip4 = append(m.ip4, normalize4(binary.BigEndian.Uint32(ip), prefix))
+			m.prefix4 = append(m.prefix4, prefix)
+		case 16:
+			ip6 := ipv6{
+				a: binary.BigEndian.Uint64(ip[0:8]),
+				b: binary.BigEndian.Uint64(ip[8:16]),
+			}
+			ip6 = normalize6(ip6, prefix)
+
+			m.ip6 = append(m.ip6, ip6)
+			m.prefix6 = append(m.prefix6, prefix)
+		}
 	}

 	return nil
@@ -53,37 +85,91 @@ func (m *GeoIPMatcher) SetReverseMatch(isReverseMatch bool) {
 	m.reverseMatch = isReverseMatch
 }

-func (m *GeoIPMatcher) match4(ip net.IP) bool {
-	nip, ok := netipx.FromStdIP(ip)
-	if !ok {
+func (m *GeoIPMatcher) match4(ip uint32) bool {
+	if len(m.ip4) == 0 {
 		return false
 	}

-	return m.ip4.Contains(nip)
+	if ip < m.ip4[0] {
+		return false
+	}
+
+	size := uint32(len(m.ip4))
+	l := uint32(0)
+	r := size
+	for l < r {
+		x := ((l + r) >> 1)
+		if ip < m.ip4[x] {
+			r = x
+			continue
+		}
+
+		nip := normalize4(ip, m.prefix4[x])
+		if nip == m.ip4[x] {
+			return true
+		}
+
+		l = x + 1
+	}
+
+	return l > 0 && normalize4(ip, m.prefix4[l-1]) == m.ip4[l-1]
 }

-func (m *GeoIPMatcher) match6(ip net.IP) bool {
-	nip, ok := netipx.FromStdIP(ip)
-	if !ok {
+func less6(a ipv6, b ipv6) bool {
+	return a.a < b.a || (a.a == b.a && a.b < b.b)
+}
+
+func (m *GeoIPMatcher) match6(ip ipv6) bool {
+	if len(m.ip6) == 0 {
 		return false
 	}

-	return m.ip6.Contains(nip)
+	if less6(ip, m.ip6[0]) {
+		return false
+	}
+
+	size := uint32(len(m.ip6))
+	l := uint32(0)
+	r := size
+	for l < r {
+		x := (l + r) / 2
+		if less6(ip, m.ip6[x]) {
+			r = x
+			continue
+		}
+
+		if normalize6(ip, m.prefix6[x]) == m.ip6[x] {
+			return true
+		}
+
+		l = x + 1
+	}
+
+	return l > 0 && normalize6(ip, m.prefix6[l-1]) == m.ip6[l-1]
 }

 // Match returns true if the given ip is included by the GeoIP.
 func (m *GeoIPMatcher) Match(ip net.IP) bool {
-	isMatched := false
 	switch len(ip) {
-	case net.IPv4len:
-		isMatched = m.match4(ip)
-	case net.IPv6len:
-		isMatched = m.match6(ip)
+	case 4:
+		if m.reverseMatch {
+			return !m.match4(binary.BigEndian.Uint32(ip))
+		}
+		return m.match4(binary.BigEndian.Uint32(ip))
+	case 16:
+		if m.reverseMatch {
+			return !m.match6(ipv6{
+				a: binary.BigEndian.Uint64(ip[0:8]),
+				b: binary.BigEndian.Uint64(ip[8:16]),
+			})
+		}
+		return m.match6(ipv6{
+			a: binary.BigEndian.Uint64(ip[0:8]),
+			b: binary.BigEndian.Uint64(ip[8:16]),
+		})
+	default:
+		return false
 	}
-	if m.reverseMatch {
-		return !isMatched
-	}
-	return isMatched
 }

 // GeoIPMatcherContainer is a container for GeoIPMatchers. It keeps unique copies of GeoIPMatcher by country code.
--- a/app/router/condition_geoip_test.go
+++ b/app/router/condition_geoip_test.go
@@ -5,12 +5,13 @@ import (
 	"path/filepath"
 	"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"
 	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/platform/filesystem"
-	"google.golang.org/protobuf/proto"
 )

 func init() {
@@ -53,7 +54,7 @@ func TestGeoIPMatcherContainer(t *testing.T) {
 }

 func TestGeoIPMatcher(t *testing.T) {
-	cidrList := []*router.CIDR{
+	cidrList := router.CIDRList{
 		{Ip: []byte{0, 0, 0, 0}, Prefix: 8},
 		{Ip: []byte{10, 0, 0, 0}, Prefix: 8},
 		{Ip: []byte{100, 64, 0, 0}, Prefix: 10},
@@ -124,40 +125,8 @@ func TestGeoIPMatcher(t *testing.T) {
 	}
 }

-func TestGeoIPMatcherRegression(t *testing.T) {
-	cidrList := []*router.CIDR{
-		{Ip: []byte{98, 108, 20, 0}, Prefix: 22},
-		{Ip: []byte{98, 108, 20, 0}, Prefix: 23},
-	}
-
-	matcher := &router.GeoIPMatcher{}
-	common.Must(matcher.Init(cidrList))
-
-	testCases := []struct {
-		Input  string
-		Output bool
-	}{
-		{
-			Input:  "98.108.22.11",
-			Output: true,
-		},
-		{
-			Input:  "98.108.25.0",
-			Output: false,
-		},
-	}
-
-	for _, testCase := range testCases {
-		ip := net.ParseAddress(testCase.Input).IP()
-		actual := matcher.Match(ip)
-		if actual != testCase.Output {
-			t.Error("expect input", testCase.Input, "to be", testCase.Output, ", but actually", actual)
-		}
-	}
-}
-
 func TestGeoIPReverseMatcher(t *testing.T) {
-	cidrList := []*router.CIDR{
+	cidrList := router.CIDRList{
 		{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
 		{Ip: []byte{91, 108, 4, 0}, Prefix: 16},
 	}
--- a/app/router/condition_test.go
+++ b/app/router/condition_test.go
@@ -6,6 +6,8 @@ import (
 	"strconv"
 	"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/errors"
@@ -17,7 +19,6 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/features/routing"
 	routing_session "github.com/xtls/xray-core/features/routing/session"
-	"google.golang.org/protobuf/proto"
 )

 func init() {
@@ -307,10 +308,8 @@ func TestRoutingRule(t *testing.T) {
 		},
 		{
 			rule: &RoutingRule{
-				Protocol: []string{"http"},
-				Attributes: map[string]string{
-					":path": "/test",
-				},
+				Protocol:   []string{"http"},
+				Attributes: "attrs[':path'].startswith('/test')",
 			},
 			test: []ruleTest{
 				{
@@ -319,19 +318,6 @@ func TestRoutingRule(t *testing.T) {
 				},
 			},
 		},
-		{
-			rule: &RoutingRule{
-				Attributes: map[string]string{
-					"Custom": "p([a-z]+)ch",
-				},
-			},
-			test: []ruleTest{
-				{
-					input:  withContent(&session.Content{Attributes: map[string]string{"custom": "peach"}}),
-					output: true,
-				},
-			},
-		},
 	}

 	for _, test := range cases {
--- a/app/router/config.go
+++ b/app/router/config.go
@@ -1,14 +1,50 @@
 package router

 import (
-	"regexp"
-	"strings"
-
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/routing"
 )

+// CIDRList is an alias of []*CIDR to provide sort.Interface.
+type CIDRList []*CIDR
+
+// Len implements sort.Interface.
+func (l *CIDRList) Len() int {
+	return len(*l)
+}
+
+// Less implements sort.Interface.
+func (l *CIDRList) Less(i int, j int) bool {
+	ci := (*l)[i]
+	cj := (*l)[j]
+
+	if len(ci.Ip) < len(cj.Ip) {
+		return true
+	}
+
+	if len(ci.Ip) > len(cj.Ip) {
+		return false
+	}
+
+	for k := 0; k < len(ci.Ip); k++ {
+		if ci.Ip[k] < cj.Ip[k] {
+			return true
+		}
+
+		if ci.Ip[k] > cj.Ip[k] {
+			return false
+		}
+	}
+
+	return ci.Prefix < cj.Prefix
+}
+
+// Swap implements sort.Interface.
+func (l *CIDRList) Swap(i int, j int) {
+	(*l)[i], (*l)[j] = (*l)[j], (*l)[i]
+}
+
 type Rule struct {
 	Tag       string
 	Balancer  *Balancer
@@ -107,11 +143,19 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}

 	if len(rr.Attributes) > 0 {
-		configuredKeys := make(map[string]*regexp.Regexp)
-		for key, value := range rr.Attributes {
-			configuredKeys[strings.ToLower(key)] = regexp.MustCompile(value)
+		cond, err := NewAttributeMatcher(rr.Attributes)
+		if err != nil {
+			return nil, err
 		}
-		conds.Add(&AttributeMatcher{configuredKeys})
+		conds.Add(cond)
+	}
+
+	if rr.UidList != nil && len(rr.UidList.Uid) > 0 {
+		conds.Add(NewUidMatcher(rr.UidList))
+	}
+
+	if len(rr.AppStatus) > 0 {
+		conds.Add(NewAppStatusMatcher(rr.AppStatus))
 	}

 	if conds.Len() == 0 {
@@ -121,45 +165,10 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	return conds, nil
 }

-// Build builds the balancing rule
-func (br *BalancingRule) Build(ohm outbound.Manager, dispatcher routing.Dispatcher) (*Balancer, error) {
-	switch strings.ToLower(br.Strategy) {
-	case "leastping":
-		return &Balancer{
-			selectors: br.OutboundSelector,
-			strategy:  &LeastPingStrategy{},
-			ohm:       ohm,
-		}, nil
-	case "roundrobin":
-		return &Balancer{
-			selectors: br.OutboundSelector,
-			strategy:  &RoundRobinStrategy{},
-			ohm:       ohm,
-		}, nil
-	case "leastload":
-		i, err := br.StrategySettings.GetInstance()
-		if err != nil {
-			return nil, err
-		}
-		s, ok := i.(*StrategyLeastLoadConfig)
-		if !ok {
-			return nil, newError("not a StrategyLeastLoadConfig").AtError()
-		}
-		leastLoadStrategy := NewLeastLoadStrategy(s)
-		return &Balancer{
-			selectors: br.OutboundSelector,
-			ohm:       ohm, fallbackTag: br.FallbackTag,
-			strategy: leastLoadStrategy,
-		}, nil
-	case "random":
-		fallthrough
-	case "":
-		return &Balancer{
-			selectors: br.OutboundSelector,
-			ohm:       ohm, fallbackTag: br.FallbackTag,
-			strategy: &RandomStrategy{},
-		}, nil
-	default:
-		return nil, newError("unrecognized balancer type")
-	}
+func (br *BalancingRule) Build(ohm outbound.Manager) (*Balancer, error) {
+	return &Balancer{
+		selectors: br.OutboundSelector,
+		strategy:  &RandomStrategy{},
+		ohm:       ohm,
+	}, nil
 }
--- a/app/router/config.pb.go
+++ b/app/router/config.pb.go
@@ -1,14 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.32.0
-// 	protoc        v4.23.1
+// 	protoc-gen-go v1.27.1
+// 	protoc        v3.18.0
 // source: app/router/config.proto

 package router

 import (
 	net "github.com/xtls/xray-core/common/net"
-	serial "github.com/xtls/xray-core/common/serial"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -132,7 +131,7 @@ func (x Config_DomainStrategy) Number() protoreflect.EnumNumber {

 // Deprecated: Use Config_DomainStrategy.Descriptor instead.
 func (Config_DomainStrategy) EnumDescriptor() ([]byte, []int) {
-	return file_app_router_config_proto_rawDescGZIP(), []int{10, 0}
+	return file_app_router_config_proto_rawDescGZIP(), []int{8, 0}
 }

 // Domain for routing decision.
@@ -478,7 +477,6 @@ type RoutingRule struct {
 	unknownFields protoimpl.UnknownFields

 	// Types that are assignable to TargetTag:
-	//
 	//	*RoutingRule_Tag
 	//	*RoutingRule_BalancingTag
 	TargetTag isRoutingRule_TargetTag `protobuf_oneof:"target_tag"`
@@ -487,7 +485,7 @@ type RoutingRule struct {
 	// List of CIDRs for target IP address matching.
 	// Deprecated. Use geoip below.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	Cidr []*CIDR `protobuf:"bytes,3,rep,name=cidr,proto3" json:"cidr,omitempty"`
 	// List of GeoIPs for target IP address matching. If this entry exists, the
 	// cidr above will have no effect. GeoIP fields with the same country code are
@@ -497,30 +495,32 @@ type RoutingRule struct {
 	// A range of port [from, to]. If the destination port is in this range, this
 	// rule takes effect. Deprecated. Use port_list.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	PortRange *net.PortRange `protobuf:"bytes,4,opt,name=port_range,json=portRange,proto3" json:"port_range,omitempty"`
 	// List of ports.
 	PortList *net.PortList `protobuf:"bytes,14,opt,name=port_list,json=portList,proto3" json:"port_list,omitempty"`
 	// List of networks. Deprecated. Use networks.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	NetworkList *net.NetworkList `protobuf:"bytes,5,opt,name=network_list,json=networkList,proto3" json:"network_list,omitempty"`
 	// List of networks for matching.
 	Networks []net.Network `protobuf:"varint,13,rep,packed,name=networks,proto3,enum=xray.common.net.Network" json:"networks,omitempty"`
 	// List of CIDRs for source IP address matching.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	SourceCidr []*CIDR `protobuf:"bytes,6,rep,name=source_cidr,json=sourceCidr,proto3" json:"source_cidr,omitempty"`
 	// List of GeoIPs for source IP address matching. If this entry exists, the
 	// source_cidr above will have no effect.
 	SourceGeoip []*GeoIP `protobuf:"bytes,11,rep,name=source_geoip,json=sourceGeoip,proto3" json:"source_geoip,omitempty"`
 	// List of ports for source port matching.
-	SourcePortList *net.PortList     `protobuf:"bytes,16,opt,name=source_port_list,json=sourcePortList,proto3" json:"source_port_list,omitempty"`
-	UserEmail      []string          `protobuf:"bytes,7,rep,name=user_email,json=userEmail,proto3" json:"user_email,omitempty"`
-	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     map[string]string `protobuf:"bytes,15,rep,name=attributes,proto3" json:"attributes,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
-	DomainMatcher  string            `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
+	SourcePortList *net.PortList `protobuf:"bytes,16,opt,name=source_port_list,json=sourcePortList,proto3" json:"source_port_list,omitempty"`
+	UserEmail      []string      `protobuf:"bytes,7,rep,name=user_email,json=userEmail,proto3" json:"user_email,omitempty"`
+	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"`
+	UidList        *net.UidList  `protobuf:"bytes,18,opt,name=uid_list,json=uidList,proto3" json:"uid_list,omitempty"`
+	AppStatus      []string      `protobuf:"bytes,19,rep,name=app_status,json=appStatus,proto3" json:"app_status,omitempty"`
 }

 func (x *RoutingRule) Reset() {
@@ -583,7 +583,7 @@ func (x *RoutingRule) GetDomain() []*Domain {
 	return nil
 }

-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetCidr() []*CIDR {
 	if x != nil {
 		return x.Cidr
@@ -598,7 +598,7 @@ func (x *RoutingRule) GetGeoip() []*GeoIP {
 	return nil
 }

-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetPortRange() *net.PortRange {
 	if x != nil {
 		return x.PortRange
@@ -613,7 +613,7 @@ func (x *RoutingRule) GetPortList() *net.PortList {
 	return nil
 }

-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetNetworkList() *net.NetworkList {
 	if x != nil {
 		return x.NetworkList
@@ -628,7 +628,7 @@ func (x *RoutingRule) GetNetworks() []net.Network {
 	return nil
 }

-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetSourceCidr() []*CIDR {
 	if x != nil {
 		return x.SourceCidr
@@ -671,11 +671,11 @@ func (x *RoutingRule) GetProtocol() []string {
 	return nil
 }

-func (x *RoutingRule) GetAttributes() map[string]string {
+func (x *RoutingRule) GetAttributes() string {
 	if x != nil {
 		return x.Attributes
 	}
-	return nil
+	return ""
 }

 func (x *RoutingRule) GetDomainMatcher() string {
@@ -685,6 +685,20 @@ func (x *RoutingRule) GetDomainMatcher() string {
 	return ""
 }

+func (x *RoutingRule) GetUidList() *net.UidList {
+	if x != nil {
+		return x.UidList
+	}
+	return nil
+}
+
+func (x *RoutingRule) GetAppStatus() []string {
+	if x != nil {
+		return x.AppStatus
+	}
+	return nil
+}
+
 type isRoutingRule_TargetTag interface {
 	isRoutingRule_TargetTag()
 }
@@ -708,11 +722,9 @@ type BalancingRule struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

-	Tag              string               `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
-	OutboundSelector []string             `protobuf:"bytes,2,rep,name=outbound_selector,json=outboundSelector,proto3" json:"outbound_selector,omitempty"`
-	Strategy         string               `protobuf:"bytes,3,opt,name=strategy,proto3" json:"strategy,omitempty"`
-	StrategySettings *serial.TypedMessage `protobuf:"bytes,4,opt,name=strategy_settings,json=strategySettings,proto3" json:"strategy_settings,omitempty"`
-	FallbackTag      string               `protobuf:"bytes,5,opt,name=fallback_tag,json=fallbackTag,proto3" json:"fallback_tag,omitempty"`
+	Tag              string   `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	OutboundSelector []string `protobuf:"bytes,2,rep,name=outbound_selector,json=outboundSelector,proto3" json:"outbound_selector,omitempty"`
+	Strategy         string   `protobuf:"bytes,3,opt,name=strategy,proto3" json:"strategy,omitempty"`
 }

 func (x *BalancingRule) Reset() {
@@ -768,167 +780,6 @@ func (x *BalancingRule) GetStrategy() string {
 	return ""
 }

-func (x *BalancingRule) GetStrategySettings() *serial.TypedMessage {
-	if x != nil {
-		return x.StrategySettings
-	}
-	return nil
-}
-
-func (x *BalancingRule) GetFallbackTag() string {
-	if x != nil {
-		return x.FallbackTag
-	}
-	return ""
-}
-
-type StrategyWeight struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Regexp bool    `protobuf:"varint,1,opt,name=regexp,proto3" json:"regexp,omitempty"`
-	Match  string  `protobuf:"bytes,2,opt,name=match,proto3" json:"match,omitempty"`
-	Value  float32 `protobuf:"fixed32,3,opt,name=value,proto3" json:"value,omitempty"`
-}
-
-func (x *StrategyWeight) Reset() {
-	*x = StrategyWeight{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_config_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StrategyWeight) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StrategyWeight) ProtoMessage() {}
-
-func (x *StrategyWeight) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_config_proto_msgTypes[8]
-	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 StrategyWeight.ProtoReflect.Descriptor instead.
-func (*StrategyWeight) Descriptor() ([]byte, []int) {
-	return file_app_router_config_proto_rawDescGZIP(), []int{8}
-}
-
-func (x *StrategyWeight) GetRegexp() bool {
-	if x != nil {
-		return x.Regexp
-	}
-	return false
-}
-
-func (x *StrategyWeight) GetMatch() string {
-	if x != nil {
-		return x.Match
-	}
-	return ""
-}
-
-func (x *StrategyWeight) GetValue() float32 {
-	if x != nil {
-		return x.Value
-	}
-	return 0
-}
-
-type StrategyLeastLoadConfig struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// weight settings
-	Costs []*StrategyWeight `protobuf:"bytes,2,rep,name=costs,proto3" json:"costs,omitempty"`
-	// RTT baselines for selecting, int64 values of time.Duration
-	Baselines []int64 `protobuf:"varint,3,rep,packed,name=baselines,proto3" json:"baselines,omitempty"`
-	// expected nodes count to select
-	Expected int32 `protobuf:"varint,4,opt,name=expected,proto3" json:"expected,omitempty"`
-	// max acceptable rtt, filter away high delay nodes. defalut 0
-	MaxRTT int64 `protobuf:"varint,5,opt,name=maxRTT,proto3" json:"maxRTT,omitempty"`
-	// acceptable failure rate
-	Tolerance float32 `protobuf:"fixed32,6,opt,name=tolerance,proto3" json:"tolerance,omitempty"`
-}
-
-func (x *StrategyLeastLoadConfig) Reset() {
-	*x = StrategyLeastLoadConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_config_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StrategyLeastLoadConfig) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StrategyLeastLoadConfig) ProtoMessage() {}
-
-func (x *StrategyLeastLoadConfig) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_config_proto_msgTypes[9]
-	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 StrategyLeastLoadConfig.ProtoReflect.Descriptor instead.
-func (*StrategyLeastLoadConfig) Descriptor() ([]byte, []int) {
-	return file_app_router_config_proto_rawDescGZIP(), []int{9}
-}
-
-func (x *StrategyLeastLoadConfig) GetCosts() []*StrategyWeight {
-	if x != nil {
-		return x.Costs
-	}
-	return nil
-}
-
-func (x *StrategyLeastLoadConfig) GetBaselines() []int64 {
-	if x != nil {
-		return x.Baselines
-	}
-	return nil
-}
-
-func (x *StrategyLeastLoadConfig) GetExpected() int32 {
-	if x != nil {
-		return x.Expected
-	}
-	return 0
-}
-
-func (x *StrategyLeastLoadConfig) GetMaxRTT() int64 {
-	if x != nil {
-		return x.MaxRTT
-	}
-	return 0
-}
-
-func (x *StrategyLeastLoadConfig) GetTolerance() float32 {
-	if x != nil {
-		return x.Tolerance
-	}
-	return 0
-}
-
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -942,7 +793,7 @@ type Config struct {
 func (x *Config) Reset() {
 	*x = Config{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_config_proto_msgTypes[10]
+		mi := &file_app_router_config_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -955,7 +806,7 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}

 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_config_proto_msgTypes[10]
+	mi := &file_app_router_config_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -968,7 +819,7 @@ func (x *Config) ProtoReflect() protoreflect.Message {

 // Deprecated: Use Config.ProtoReflect.Descriptor instead.
 func (*Config) Descriptor() ([]byte, []int) {
-	return file_app_router_config_proto_rawDescGZIP(), []int{10}
+	return file_app_router_config_proto_rawDescGZIP(), []int{8}
 }

 func (x *Config) GetDomainStrategy() Config_DomainStrategy {
@@ -999,7 +850,6 @@ type Domain_Attribute struct {

 	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
 	// Types that are assignable to TypedValue:
-	//
 	//	*Domain_Attribute_BoolValue
 	//	*Domain_Attribute_IntValue
 	TypedValue isDomain_Attribute_TypedValue `protobuf_oneof:"typed_value"`
@@ -1008,7 +858,7 @@ type Domain_Attribute struct {
 func (x *Domain_Attribute) Reset() {
 	*x = Domain_Attribute{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_router_config_proto_msgTypes[11]
+		mi := &file_app_router_config_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1021,7 +871,7 @@ func (x *Domain_Attribute) String() string {
 func (*Domain_Attribute) ProtoMessage() {}

 func (x *Domain_Attribute) ProtoReflect() protoreflect.Message {
-	mi := &file_app_router_config_proto_msgTypes[11]
+	mi := &file_app_router_config_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1086,169 +936,142 @@ var File_app_router_config_proto protoreflect.FileDescriptor
 var file_app_router_config_proto_rawDesc = []byte{
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 }

 var (
@@ -1264,32 +1087,29 @@ func file_app_router_config_proto_rawDescGZIP() []byte {
 }

 var file_app_router_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_app_router_config_proto_msgTypes = make([]protoimpl.MessageInfo, 13)
+var file_app_router_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_app_router_config_proto_goTypes = []interface{}{
-	(Domain_Type)(0),                // 0: xray.app.router.Domain.Type
-	(Config_DomainStrategy)(0),      // 1: xray.app.router.Config.DomainStrategy
-	(*Domain)(nil),                  // 2: xray.app.router.Domain
-	(*CIDR)(nil),                    // 3: xray.app.router.CIDR
-	(*GeoIP)(nil),                   // 4: xray.app.router.GeoIP
-	(*GeoIPList)(nil),               // 5: xray.app.router.GeoIPList
-	(*GeoSite)(nil),                 // 6: xray.app.router.GeoSite
-	(*GeoSiteList)(nil),             // 7: xray.app.router.GeoSiteList
-	(*RoutingRule)(nil),             // 8: xray.app.router.RoutingRule
-	(*BalancingRule)(nil),           // 9: xray.app.router.BalancingRule
-	(*StrategyWeight)(nil),          // 10: xray.app.router.StrategyWeight
-	(*StrategyLeastLoadConfig)(nil), // 11: xray.app.router.StrategyLeastLoadConfig
-	(*Config)(nil),                  // 12: xray.app.router.Config
-	(*Domain_Attribute)(nil),        // 13: xray.app.router.Domain.Attribute
-	nil,                             // 14: xray.app.router.RoutingRule.AttributesEntry
-	(*net.PortRange)(nil),           // 15: xray.common.net.PortRange
-	(*net.PortList)(nil),            // 16: xray.common.net.PortList
-	(*net.NetworkList)(nil),         // 17: xray.common.net.NetworkList
-	(net.Network)(0),                // 18: xray.common.net.Network
-	(*serial.TypedMessage)(nil),     // 19: xray.common.serial.TypedMessage
+	(Domain_Type)(0),           // 0: xray.app.router.Domain.Type
+	(Config_DomainStrategy)(0), // 1: xray.app.router.Config.DomainStrategy
+	(*Domain)(nil),             // 2: xray.app.router.Domain
+	(*CIDR)(nil),               // 3: xray.app.router.CIDR
+	(*GeoIP)(nil),              // 4: xray.app.router.GeoIP
+	(*GeoIPList)(nil),          // 5: xray.app.router.GeoIPList
+	(*GeoSite)(nil),            // 6: xray.app.router.GeoSite
+	(*GeoSiteList)(nil),        // 7: xray.app.router.GeoSiteList
+	(*RoutingRule)(nil),        // 8: xray.app.router.RoutingRule
+	(*BalancingRule)(nil),      // 9: xray.app.router.BalancingRule
+	(*Config)(nil),             // 10: xray.app.router.Config
+	(*Domain_Attribute)(nil),   // 11: xray.app.router.Domain.Attribute
+	(*net.PortRange)(nil),      // 12: xray.common.net.PortRange
+	(*net.PortList)(nil),       // 13: xray.common.net.PortList
+	(*net.NetworkList)(nil),    // 14: xray.common.net.NetworkList
+	(net.Network)(0),           // 15: xray.common.net.Network
+	(*net.UidList)(nil),        // 16: xray.common.net.UidList
 }
 var file_app_router_config_proto_depIdxs = []int32{
 	0,  // 0: xray.app.router.Domain.type:type_name -> xray.app.router.Domain.Type
-	13, // 1: xray.app.router.Domain.attribute:type_name -> xray.app.router.Domain.Attribute
+	11, // 1: xray.app.router.Domain.attribute:type_name -> xray.app.router.Domain.Attribute
 	3,  // 2: xray.app.router.GeoIP.cidr:type_name -> xray.app.router.CIDR
 	4,  // 3: xray.app.router.GeoIPList.entry:type_name -> xray.app.router.GeoIP
 	2,  // 4: xray.app.router.GeoSite.domain:type_name -> xray.app.router.Domain
@@ -1297,24 +1117,22 @@ var file_app_router_config_proto_depIdxs = []int32{
 	2,  // 6: xray.app.router.RoutingRule.domain:type_name -> xray.app.router.Domain
 	3,  // 7: xray.app.router.RoutingRule.cidr:type_name -> xray.app.router.CIDR
 	4,  // 8: xray.app.router.RoutingRule.geoip:type_name -> xray.app.router.GeoIP
-	15, // 9: xray.app.router.RoutingRule.port_range:type_name -> xray.common.net.PortRange
-	16, // 10: xray.app.router.RoutingRule.port_list:type_name -> xray.common.net.PortList
-	17, // 11: xray.app.router.RoutingRule.network_list:type_name -> xray.common.net.NetworkList
-	18, // 12: xray.app.router.RoutingRule.networks:type_name -> xray.common.net.Network
+	12, // 9: xray.app.router.RoutingRule.port_range:type_name -> xray.common.net.PortRange
+	13, // 10: xray.app.router.RoutingRule.port_list:type_name -> xray.common.net.PortList
+	14, // 11: xray.app.router.RoutingRule.network_list:type_name -> xray.common.net.NetworkList
+	15, // 12: xray.app.router.RoutingRule.networks:type_name -> xray.common.net.Network
 	3,  // 13: xray.app.router.RoutingRule.source_cidr:type_name -> xray.app.router.CIDR
 	4,  // 14: xray.app.router.RoutingRule.source_geoip:type_name -> xray.app.router.GeoIP
-	16, // 15: xray.app.router.RoutingRule.source_port_list:type_name -> xray.common.net.PortList
-	14, // 16: xray.app.router.RoutingRule.attributes:type_name -> xray.app.router.RoutingRule.AttributesEntry
-	19, // 17: xray.app.router.BalancingRule.strategy_settings:type_name -> xray.common.serial.TypedMessage
-	10, // 18: xray.app.router.StrategyLeastLoadConfig.costs:type_name -> xray.app.router.StrategyWeight
-	1,  // 19: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
-	8,  // 20: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
-	9,  // 21: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
-	22, // [22:22] is the sub-list for method output_type
-	22, // [22:22] is the sub-list for method input_type
-	22, // [22:22] is the sub-list for extension type_name
-	22, // [22:22] is the sub-list for extension extendee
-	0,  // [0:22] is the sub-list for field type_name
+	13, // 15: xray.app.router.RoutingRule.source_port_list:type_name -> xray.common.net.PortList
+	16, // 16: xray.app.router.RoutingRule.uid_list:type_name -> xray.common.net.UidList
+	1,  // 17: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
+	8,  // 18: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
+	9,  // 19: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
+	20, // [20:20] is the sub-list for method output_type
+	20, // [20:20] is the sub-list for method input_type
+	20, // [20:20] is the sub-list for extension type_name
+	20, // [20:20] is the sub-list for extension extendee
+	0,  // [0:20] is the sub-list for field type_name
 }

 func init() { file_app_router_config_proto_init() }
@@ -1420,30 +1238,6 @@ func file_app_router_config_proto_init() {
 			}
 		}
 		file_app_router_config_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*StrategyWeight); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_config_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*StrategyLeastLoadConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_router_config_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Config); i {
 			case 0:
 				return &v.state
@@ -1455,7 +1249,7 @@ func file_app_router_config_proto_init() {
 				return nil
 			}
 		}
-		file_app_router_config_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+		file_app_router_config_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Domain_Attribute); i {
 			case 0:
 				return &v.state
@@ -1472,7 +1266,7 @@ func file_app_router_config_proto_init() {
 		(*RoutingRule_Tag)(nil),
 		(*RoutingRule_BalancingTag)(nil),
 	}
-	file_app_router_config_proto_msgTypes[11].OneofWrappers = []interface{}{
+	file_app_router_config_proto_msgTypes[9].OneofWrappers = []interface{}{
 		(*Domain_Attribute_BoolValue)(nil),
 		(*Domain_Attribute_IntValue)(nil),
 	}
@@ -1482,7 +1276,7 @@ func file_app_router_config_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_router_config_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   13,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
--- a/app/router/config.proto
+++ b/app/router/config.proto
@@ -6,9 +6,9 @@ option go_package = "github.com/xtls/xray-core/app/router";
 option java_package = "com.xray.app.router";
 option java_multiple_files = true;

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

 // Domain for routing decision.
 message Domain {
@@ -120,36 +120,19 @@ message RoutingRule {
  repeated string inbound_tag = 8;
  repeated string protocol = 9;

-  map<string, string> attributes = 15;
+  string attributes = 15;

  string domain_matcher = 17;
+
+  xray.common.net.UidList uid_list = 18;
+  repeated string app_status = 19;
+
 }

 message BalancingRule {
  string tag = 1;
  repeated string outbound_selector = 2;
  string strategy = 3;
-  xray.common.serial.TypedMessage strategy_settings = 4;
-  string fallback_tag = 5;
-}
-
-message StrategyWeight {
-  bool regexp = 1;
-  string match = 2;
-  float value =3;
-}
-
-message StrategyLeastLoadConfig {
-  // weight settings
-  repeated StrategyWeight costs = 2;
-  // RTT baselines for selecting, int64 values of time.Duration
-  repeated int64 baselines = 3;
-  // expected nodes count to select
-  int32 expected = 4;
-  // max acceptable rtt, filter away high delay nodes. defalut 0
-  int64 maxRTT = 5;
-  // acceptable failure rate
-  float tolerance = 6;
 }

 message Config {
--- a/app/router/router.go
+++ b/app/router/router.go
@@ -29,17 +29,16 @@ type Route struct {
 }

 // Init initializes the Router.
-func (r *Router) Init(ctx context.Context, config *Config, d dns.Client, ohm outbound.Manager, dispatcher routing.Dispatcher) error {
+func (r *Router) Init(config *Config, d dns.Client, ohm outbound.Manager) error {
 	r.domainStrategy = config.DomainStrategy
 	r.dns = d

 	r.balancers = make(map[string]*Balancer, len(config.BalancingRule))
 	for _, rule := range config.BalancingRule {
-		balancer, err := rule.Build(ohm, dispatcher)
+		balancer, err := rule.Build(ohm)
 		if err != nil {
 			return err
 		}
-		balancer.InjectContext(ctx)
 		r.balancers[rule.Tag] = balancer
 	}

@@ -113,16 +112,16 @@ func (r *Router) pickRouteInternal(ctx routing.Context) (*Rule, routing.Context,
 }

 // Start implements common.Runnable.
-func (r *Router) Start() error {
+func (*Router) Start() error {
 	return nil
 }

 // Close implements common.Closable.
-func (r *Router) Close() error {
+func (*Router) Close() error {
 	return nil
 }

-// Type implements common.HasType.
+// Type implement common.HasType.
 func (*Router) Type() interface{} {
 	return routing.RouterType()
 }
@@ -140,8 +139,8 @@ func (r *Route) GetOutboundTag() string {
 func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		r := new(Router)
-		if err := core.RequireFeatures(ctx, func(d dns.Client, ohm outbound.Manager, dispatcher routing.Dispatcher) error {
-			return r.Init(ctx, config.(*Config), d, ohm, dispatcher)
+		if err := core.RequireFeatures(ctx, func(d dns.Client, ohm outbound.Manager) error {
+			return r.Init(config.(*Config), d, ohm)
 		}); err != nil {
 			return nil, err
 		}
--- a/app/router/router_test.go
+++ b/app/router/router_test.go
@@ -4,12 +4,14 @@ 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"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/outbound"
 	routing_session "github.com/xtls/xray-core/features/routing/session"
 	"github.com/xtls/xray-core/testing/mocks"
@@ -40,10 +42,10 @@ func TestSimpleRouter(t *testing.T) {
 	mockHs := mocks.NewOutboundHandlerSelector(mockCtl)

 	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, &mockOutboundManager{
+	common.Must(r.Init(config, mockDNS, &mockOutboundManager{
 		Manager:         mockOhm,
 		HandlerSelector: mockHs,
-	}, nil))
+	}))

 	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
@@ -81,10 +83,10 @@ func TestSimpleBalancer(t *testing.T) {
 	mockHs.EXPECT().Select(gomock.Eq([]string{"test-"})).Return([]string{"test"})

 	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, &mockOutboundManager{
+	common.Must(r.Init(config, mockDNS, &mockOutboundManager{
 		Manager:         mockOhm,
 		HandlerSelector: mockHs,
-	}, nil))
+	}))

 	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
@@ -94,55 +96,6 @@ func TestSimpleBalancer(t *testing.T) {
 	}
 }

-/*
-
-Do not work right now: need a full client setup
-
-func TestLeastLoadBalancer(t *testing.T) {
-	config := &Config{
-		Rule: []*RoutingRule{
-			{
-				TargetTag: &RoutingRule_BalancingTag{
-					BalancingTag: "balance",
-				},
-				Networks: []net.Network{net.Network_TCP},
-			},
-		},
-		BalancingRule: []*BalancingRule{
-			{
-				Tag:              "balance",
-				OutboundSelector: []string{"test-"},
-				Strategy:         "leastLoad",
-				StrategySettings: serial.ToTypedMessage(&StrategyLeastLoadConfig{
-					Baselines:   nil,
-					Expected:    1,
-				}),
-			},
-		},
-	}
-
-	mockCtl := gomock.NewController(t)
-	defer mockCtl.Finish()
-
-	mockDNS := mocks.NewDNSClient(mockCtl)
-	mockOhm := mocks.NewOutboundManager(mockCtl)
-	mockHs := mocks.NewOutboundHandlerSelector(mockCtl)
-
-	mockHs.EXPECT().Select(gomock.Eq([]string{"test-"})).Return([]string{"test1"})
-
-	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, &mockOutboundManager{
-		Manager:         mockOhm,
-		HandlerSelector: mockHs,
-	}, nil))
-	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("v2ray.com"), 80)})
-	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
-	common.Must(err)
-	if tag := route.GetOutboundTag(); tag != "test1" {
-		t.Error("expect tag 'test1', bug actually ", tag)
-	}
-}*/
-
 func TestIPOnDemand(t *testing.T) {
 	config := &Config{
 		DomainStrategy: Config_IpOnDemand,
@@ -172,7 +125,7 @@ func TestIPOnDemand(t *testing.T) {
 	}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()

 	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))
+	common.Must(r.Init(config, mockDNS, nil))

 	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
@@ -211,7 +164,7 @@ func TestIPIfNonMatchDomain(t *testing.T) {
 	}).Return([]net.IP{{192, 168, 0, 1}}, nil).AnyTimes()

 	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))
+	common.Must(r.Init(config, mockDNS, nil))

 	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.DomainAddress("example.com"), 80)})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
@@ -245,7 +198,7 @@ func TestIPIfNonMatchIP(t *testing.T) {
 	mockDNS := mocks.NewDNSClient(mockCtl)

 	r := new(Router)
-	common.Must(r.Init(context.TODO(), config, mockDNS, nil, nil))
+	common.Must(r.Init(config, mockDNS, nil))

 	ctx := session.ContextWithOutbound(context.Background(), &session.Outbound{Target: net.TCPDestination(net.LocalHostIP, 80)})
 	route, err := r.PickRoute(routing_session.AsRoutingContext(ctx))
--- a/app/router/strategy_leastload.go
+++ b/app/router/strategy_leastload.go
@@ -1,200 +0,0 @@
-package router
-
-import (
-	"context"
-	"math"
-	"sort"
-	"time"
-
-	"github.com/xtls/xray-core/app/observatory"
-	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/dice"
-	"github.com/xtls/xray-core/core"
-	"github.com/xtls/xray-core/features/extension"
-)
-
-// LeastLoadStrategy represents a least load balancing strategy
-type LeastLoadStrategy struct {
-	settings *StrategyLeastLoadConfig
-	costs    *WeightManager
-
-	observer extension.Observatory
-
-	ctx context.Context
-}
-
-func (l *LeastLoadStrategy) GetPrincipleTarget(strings []string) []string {
-	var ret []string
-	nodes := l.pickOutbounds(strings)
-	for _, v := range nodes {
-		ret = append(ret, v.Tag)
-	}
-	return ret
-}
-
-// NewLeastLoadStrategy creates a new LeastLoadStrategy with settings
-func NewLeastLoadStrategy(settings *StrategyLeastLoadConfig) *LeastLoadStrategy {
-	return &LeastLoadStrategy{
-		settings: settings,
-		costs: NewWeightManager(
-			settings.Costs, 1,
-			func(value, cost float64) float64 {
-				return value * math.Pow(cost, 0.5)
-			},
-		),
-	}
-}
-
-// node is a minimal copy of HealthCheckResult
-// we don't use HealthCheckResult directly because
-// it may change by health checker during routing
-type node struct {
-	Tag              string
-	CountAll         int
-	CountFail        int
-	RTTAverage       time.Duration
-	RTTDeviation     time.Duration
-	RTTDeviationCost time.Duration
-}
-
-func (l *LeastLoadStrategy) InjectContext(ctx context.Context) {
-	l.ctx = ctx
-}
-
-func (s *LeastLoadStrategy) PickOutbound(candidates []string) string {
-	selects := s.pickOutbounds(candidates)
-	count := len(selects)
-	if count == 0 {
-		// goes to fallbackTag
-		return ""
-	}
-	return selects[dice.Roll(count)].Tag
-}
-
-func (s *LeastLoadStrategy) pickOutbounds(candidates []string) []*node {
-	qualified := s.getNodes(candidates, time.Duration(s.settings.MaxRTT))
-	selects := s.selectLeastLoad(qualified)
-	return selects
-}
-
-// selectLeastLoad selects nodes according to Baselines and Expected Count.
-//
-// The strategy always improves network response speed, not matter which mode below is configured.
-// But they can still have different priorities.
-//
-// 1. Bandwidth priority: no Baseline + Expected Count > 0.: selects `Expected Count` of nodes.
-// (one if Expected Count <= 0)
-//
-// 2. Bandwidth priority advanced: Baselines + Expected Count > 0.
-// Select `Expected Count` amount of nodes, and also those near them according to baselines.
-// In other words, it selects according to different Baselines, until one of them matches
-// the Expected Count, if no Baseline matches, Expected Count applied.
-//
-// 3. Speed priority: Baselines + `Expected Count <= 0`.
-// go through all baselines until find selects, if not, select none. Used in combination
-// with 'balancer.fallbackTag', it means: selects qualified nodes or use the fallback.
-func (s *LeastLoadStrategy) selectLeastLoad(nodes []*node) []*node {
-	if len(nodes) == 0 {
-		newError("least load: no qualified outbound").AtInfo().WriteToLog()
-		return nil
-	}
-	expected := int(s.settings.Expected)
-	availableCount := len(nodes)
-	if expected > availableCount {
-		return nodes
-	}
-
-	if expected <= 0 {
-		expected = 1
-	}
-	if len(s.settings.Baselines) == 0 {
-		return nodes[:expected]
-	}
-
-	count := 0
-	// go through all base line until find expected selects
-	for _, b := range s.settings.Baselines {
-		baseline := time.Duration(b)
-		for i := count; i < availableCount; i++ {
-			if nodes[i].RTTDeviationCost >= baseline {
-				break
-			}
-			count = i + 1
-		}
-		// don't continue if find expected selects
-		if count >= expected {
-			newError("applied baseline: ", baseline).AtDebug().WriteToLog()
-			break
-		}
-	}
-	if s.settings.Expected > 0 && count < expected {
-		count = expected
-	}
-	return nodes[:count]
-}
-
-func (s *LeastLoadStrategy) getNodes(candidates []string, maxRTT time.Duration) []*node {
-	if s.observer == nil {
-		common.Must(core.RequireFeatures(s.ctx, func(observatory extension.Observatory) error {
-			s.observer = observatory
-			return nil
-		}))
-	}
-	observeResult, err := s.observer.GetObservation(s.ctx)
-	if err != nil {
-		newError("cannot get observation").Base(err).WriteToLog()
-		return make([]*node, 0)
-	}
-
-	results := observeResult.(*observatory.ObservationResult)
-
-	outboundlist := outboundList(candidates)
-
-	var ret []*node
-
-	for _, v := range results.Status {
-		if v.Alive && (v.Delay < maxRTT.Milliseconds() || maxRTT == 0) && outboundlist.contains(v.OutboundTag) {
-			record := &node{
-				Tag:              v.OutboundTag,
-				CountAll:         1,
-				CountFail:        1,
-				RTTAverage:       time.Duration(v.Delay) * time.Millisecond,
-				RTTDeviation:     time.Duration(v.Delay) * time.Millisecond,
-				RTTDeviationCost: time.Duration(s.costs.Apply(v.OutboundTag, float64(time.Duration(v.Delay)*time.Millisecond))),
-			}
-
-			if v.HealthPing != nil {
-				record.RTTAverage = time.Duration(v.HealthPing.Average)
-				record.RTTDeviation = time.Duration(v.HealthPing.Deviation)
-				record.RTTDeviationCost = time.Duration(s.costs.Apply(v.OutboundTag, float64(v.HealthPing.Deviation)))
-				record.CountAll = int(v.HealthPing.All)
-				record.CountFail = int(v.HealthPing.Fail)
-
-			}
-			ret = append(ret, record)
-		}
-	}
-
-	leastloadSort(ret)
-	return ret
-}
-
-func leastloadSort(nodes []*node) {
-	sort.Slice(nodes, func(i, j int) bool {
-		left := nodes[i]
-		right := nodes[j]
-		if left.RTTDeviationCost != right.RTTDeviationCost {
-			return left.RTTDeviationCost < right.RTTDeviationCost
-		}
-		if left.RTTAverage != right.RTTAverage {
-			return left.RTTAverage < right.RTTAverage
-		}
-		if left.CountFail != right.CountFail {
-			return left.CountFail < right.CountFail
-		}
-		if left.CountAll != right.CountAll {
-			return left.CountAll > right.CountAll
-		}
-		return left.Tag < right.Tag
-	})
-}
--- a/app/router/strategy_leastload_test.go
+++ b/app/router/strategy_leastload_test.go
@@ -1,179 +0,0 @@
-package router
-
-import (
-	"testing"
-)
-
-/*
-Split into multiple package, need to be tested separately
-
-func TestSelectLeastLoad(t *testing.T) {
-	settings := &StrategyLeastLoadConfig{
-		HealthCheck: &HealthPingConfig{
-			SamplingCount: 10,
-		},
-		Expected: 1,
-		MaxRTT:   int64(time.Millisecond * time.Duration(800)),
-	}
-	strategy := NewLeastLoadStrategy(settings)
-	// std 40
-	strategy.PutResult("a", time.Millisecond*time.Duration(60))
-	strategy.PutResult("a", time.Millisecond*time.Duration(140))
-	strategy.PutResult("a", time.Millisecond*time.Duration(60))
-	strategy.PutResult("a", time.Millisecond*time.Duration(140))
-	// std 60
-	strategy.PutResult("b", time.Millisecond*time.Duration(40))
-	strategy.PutResult("b", time.Millisecond*time.Duration(160))
-	strategy.PutResult("b", time.Millisecond*time.Duration(40))
-	strategy.PutResult("b", time.Millisecond*time.Duration(160))
-	// std 0, but >MaxRTT
-	strategy.PutResult("c", time.Millisecond*time.Duration(1000))
-	strategy.PutResult("c", time.Millisecond*time.Duration(1000))
-	strategy.PutResult("c", time.Millisecond*time.Duration(1000))
-	strategy.PutResult("c", time.Millisecond*time.Duration(1000))
-	expected := "a"
-	actual := strategy.SelectAndPick([]string{"a", "b", "c", "untested"})
-	if actual != expected {
-		t.Errorf("expected: %v, actual: %v", expected, actual)
-	}
-}
-
-func TestSelectLeastLoadWithCost(t *testing.T) {
-	settings := &StrategyLeastLoadConfig{
-		HealthCheck: &HealthPingConfig{
-			SamplingCount: 10,
-		},
-		Costs: []*StrategyWeight{
-			{Match: "a", Value: 9},
-		},
-		Expected: 1,
-	}
-	strategy := NewLeastLoadStrategy(settings, nil)
-	// std 40, std+c 120
-	strategy.PutResult("a", time.Millisecond*time.Duration(60))
-	strategy.PutResult("a", time.Millisecond*time.Duration(140))
-	strategy.PutResult("a", time.Millisecond*time.Duration(60))
-	strategy.PutResult("a", time.Millisecond*time.Duration(140))
-	// std 60
-	strategy.PutResult("b", time.Millisecond*time.Duration(40))
-	strategy.PutResult("b", time.Millisecond*time.Duration(160))
-	strategy.PutResult("b", time.Millisecond*time.Duration(40))
-	strategy.PutResult("b", time.Millisecond*time.Duration(160))
-	expected := "b"
-	actual := strategy.SelectAndPick([]string{"a", "b", "untested"})
-	if actual != expected {
-		t.Errorf("expected: %v, actual: %v", expected, actual)
-	}
-}
-*/
-func TestSelectLeastExpected(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: nil,
-			Expected:  3,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 100},
-		{Tag: "b", RTTDeviationCost: 200},
-		{Tag: "c", RTTDeviationCost: 300},
-		{Tag: "d", RTTDeviationCost: 350},
-	}
-	expected := 3
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
-func TestSelectLeastExpected2(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: nil,
-			Expected:  3,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 100},
-		{Tag: "b", RTTDeviationCost: 200},
-	}
-	expected := 2
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
-func TestSelectLeastExpectedAndBaselines(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: []int64{200, 300, 400},
-			Expected:  3,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 100},
-		{Tag: "b", RTTDeviationCost: 200},
-		{Tag: "c", RTTDeviationCost: 250},
-		{Tag: "d", RTTDeviationCost: 300},
-		{Tag: "e", RTTDeviationCost: 310},
-	}
-	expected := 3
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
-func TestSelectLeastExpectedAndBaselines2(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: []int64{200, 300, 400},
-			Expected:  3,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 500},
-		{Tag: "b", RTTDeviationCost: 600},
-		{Tag: "c", RTTDeviationCost: 700},
-		{Tag: "d", RTTDeviationCost: 800},
-		{Tag: "e", RTTDeviationCost: 900},
-	}
-	expected := 3
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
-func TestSelectLeastLoadBaselines(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: []int64{200, 400, 600},
-			Expected:  0,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 100},
-		{Tag: "b", RTTDeviationCost: 200},
-		{Tag: "c", RTTDeviationCost: 300},
-	}
-	expected := 1
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
-func TestSelectLeastLoadBaselinesNoQualified(t *testing.T) {
-	strategy := &LeastLoadStrategy{
-		settings: &StrategyLeastLoadConfig{
-			Baselines: []int64{200, 400, 600},
-			Expected:  0,
-		},
-	}
-	nodes := []*node{
-		{Tag: "a", RTTDeviationCost: 800},
-		{Tag: "b", RTTDeviationCost: 1000},
-	}
-	expected := 0
-	ns := strategy.selectLeastLoad(nodes)
-	if len(ns) != expected {
-		t.Errorf("expected: %v, actual: %v", expected, len(ns))
-	}
-}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Shelikhoo	64c2986853	Added experiment to avoid sending the termination signal (cherry picked from commit c5357e1f000054ba5836468922cae52a830c8019)	2021-10-22 18:31:54 +08:00
Shelikhoo	778876df9e	VMess AEAD based packet length (cherry picked from commit 08221600082a79376bdc262f2ffec1a3129ae98d)	2021-10-22 18:30:30 +08:00
世界	5bf2b31883	Add hook to init and listen observatory statuses	2021-10-22 17:59:41 +08:00
世界	390a76ff61	Export instance context	2021-10-22 17:59:41 +08:00
世界	486f96838d	Parse port in dns address	2021-10-22 17:59:41 +08:00
世界	710b283204	Add more default ttl	2021-10-22 17:59:41 +08:00
世界	073ba6f1c5	Add ApplySockopt	2021-10-22 17:59:41 +08:00
世界	a4f657f787	Remove unused	2021-10-22 17:59:40 +08:00
世界	ea94d07f65	Add domainStrategy to outbound & Add preferIPv4/6 to domainStrategy	2021-10-22 17:59:27 +08:00
世界	14aa152a8a	Add skipFakeDNS to inbound session	2021-10-22 17:59:26 +08:00
世界	e316cd4c66	Hook to replace DOHL dialer	2021-10-22 17:59:26 +08:00
世界	16d96aa54d	Add uid and app status in routing rule	2021-10-22 17:59:26 +08:00