remove unused

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.74.2 to 1.75.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.74.2...v1.75.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-version: 1.75.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,78 @@
+name: Bug report
+description: "Submit Xray-core bug"
+body:
+  - type: checkboxes
+    attributes:
+      label: Integrity requirements
+      description: |-
+        Please check all of the following options to prove that you have read and understood the requirements, otherwise this issue will be closed.
+      options:
+        - label: I have read all the comments in the issue template and ensured that this issue meet the requirements.
+          required: true
+        - label: I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
+          required: true
+        - label: I provided the complete config and logs, rather than just providing the truncated parts based on my own judgment.
+          required: true
+        - label: I searched issues and did not find any similar issues.
+          required: true
+        - label: The problem can be successfully reproduced in the latest Release
+          required: true
+  - type: textarea
+    attributes:
+      label: Description
+      description: |-
+        Please provide a detailed description of the error. And the information you think valuable.
+        If the problem occurs after the update, please provide the **specific** version
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Reproduction Method
+      description: |-
+        Based on the configuration you provided below, provide the method to reproduce the bug.
+    validations:
+      required: true
+  - type: markdown
+    attributes:
+      value: |-
+        ## Configuration and Log Section
+        
+        ### For config
+        Please provide the configuration files that can reproduce the problem, including the server and client.
+        Don't just paste a big exported config file here. Eliminate useless inbound/outbound, rules, options, this can help determine the problem, if you really want to get help.
+        After removing parts that do not affect reproduction, provide the actual running **complete** file.
+        meaning of complete: This config can be directly used to start the core, **not a truncated part of the config**. For fields like keys, use newly generated valid parameters that have not been actually used to fill in.
+
+        ### For logs
+        Please set the log level to debug and dnsLog to true first.
+        Restart Xray-core, then operate according to the reproduction method, try to reduce the irrelevant part in the log.
+        Remember to delete parts with personal information (such as UUID and IP).
+        Provide the log of Xray-core, not the log output by the panel or other things.
+
+        ### Finally
+        The specific content to be filled in each of the following text boxes needs to be placed between ```<details><pre><code>``` and ```</code></pre></details>```, like this
+        ```
+        <details><pre><code>
+        (config)
+        </code></pre></details>
+        ```
+  - type: textarea
+    attributes:
+      label: Client config
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Server config
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Client log
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Server log
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/bug_report_zh.yml

@@ -0,0 +1,78 @@
+name: bug反馈
+description: "提交 Xray-core bug"
+body:
+  - type: checkboxes
+    attributes:
+      label: 完整性要求
+      description: |-
+        请勾选以下所有选项以证明您已经阅读并理解了以下要求，否则该 issue 将被关闭。
+      options:
+        - label: 我读完了 issue 模板中的所有注释，确保填写符合要求。
+          required: true
+        - label: 我保证阅读了文档，了解所有我编写的配置文件项的含义，而不是大量堆砌看似有用的选项或默认值。
+          required: true
+        - label: 我提供了完整的配置文件和日志，而不是出于自己的判断只给出截取的部分。
+          required: true
+        - label: 我搜索了 issues, 没有发现已提出的类似问题。
+          required: true
+        - label: 问题在 Release 最新的版本上可以成功复现
+          required: true
+  - type: textarea
+    attributes:
+      label: 描述
+      description: |-
+        请提供错误的详细描述。以及你认为有价值的信息。
+        如果问题在更新后出现，请提供**具体**出现问题的版本号。
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 重现方式
+      description: |-
+        基于你下面提供的配置，提供重现BUG方法。
+    validations:
+      required: true
+  - type: markdown
+    attributes:
+      value: |-
+        ## 配置与日志部分
+        
+        ### 对于配置文件
+        请提供可以重现问题的配置文件，包括服务端和客户端。
+        不要直接在这里黏贴一大段导出的 config 文件。去掉无用的出入站、规则、选项，这可以帮助确定问题，如果你真的想得到帮助。
+        在去掉不影响复现的部分后，提供实际运行的**完整**文件。
+        完整的含义：可以直接使用这个配置启动核心，**不是截取的部分配置**。对于密钥等参数使用重新生成未实际使用的有效参数填充。
+        
+        ### 对于日志
+        请先将日志等级设置为 debug, dnsLog 设置为true.
+        重启 Xray-core ，再按复现方式操作，尽量减少日志中的无关部分。
+        记得删除有关个人信息（如UUID与IP）的部分。
+        提供 Xray-core 的日志，而不是面板或者别的东西输出的日志。
+
+        ### 最后
+        把下面的每格具体内容需要放在 ```<details><pre><code>``` 和 ```</code></pre></details>``` 中间，如
+        ```
+        <details><pre><code>
+        (config)
+        </code></pre></details>
+        ```
+  - type: textarea
+    attributes:
+      label: 客户端配置
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 服务端配置
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 客户端日志
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: 服务端日志
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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

.github/build/friendly-filenames.json

@@ -2,7 +2,6 @@
   "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" },
@@ -22,6 +21,7 @@
   "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" }
-}
+}

.github/docker/Dockerfile

@@ -0,0 +1,62 @@
+# syntax=docker/dockerfile:latest
+FROM --platform=$BUILDPLATFORM golang:latest AS build
+
+# Build xray-core
+WORKDIR /src
+COPY . .
+ARG TARGETOS
+ARG TARGETARCH
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+
+# Download geodat into a staging directory
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geosite.dat /tmp/geodat/geosite.dat
+
+RUN mkdir -p /tmp/empty
+
+# Create config files with empty JSON content
+RUN mkdir -p /tmp/usr/local/etc/xray
+RUN cat <<EOF >/tmp/usr/local/etc/xray/00_log.json
+{
+  "log": {
+    "error": "/var/log/xray/error.log",
+    "loglevel": "warning",
+    "access": "none",
+    "dnsLog": false
+  }
+}
+EOF
+RUN echo '{}' >/tmp/usr/local/etc/xray/01_api.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/02_dns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/03_routing.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/04_policy.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/05_inbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/06_outbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/07_transport.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/08_stats.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/09_reverse.json
+
+# Create log files
+RUN mkdir -p /tmp/var/log/xray && touch \
+  /tmp/var/log/xray/access.log \
+  /tmp/var/log/xray/error.log
+
+# Build finally image
+FROM gcr.io/distroless/static:nonroot
+
+COPY --from=build --chown=0:0 --chmod=755 /src/xray /usr/local/bin/xray
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/share/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/geodat/*.dat /usr/local/share/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/etc/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/usr/local/etc/xray/*.json /usr/local/etc/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /var/log/xray
+COPY --from=build --chown=65532:65532 --chmod=600 /tmp/var/log/xray/*.log /var/log/xray/
+
+VOLUME /usr/local/etc/xray
+VOLUME /var/log/xray
+
+ARG TZ=Etc/UTC
+ENV TZ=$TZ
+
+ENTRYPOINT [ "/usr/local/bin/xray" ]
+CMD [ "-confdir", "/usr/local/etc/xray/" ]

.github/docker/Dockerfile.usa

@@ -0,0 +1,71 @@
+# syntax=docker/dockerfile:latest
+FROM --platform=$BUILDPLATFORM golang:latest AS build
+
+# Build xray-core
+WORKDIR /src
+COPY . .
+ARG TARGETOS
+ARG TARGETARCH
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH CGO_ENABLED=0 go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
+
+# Download geodat into a staging directory
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geoip.dat /tmp/geodat/geoip.dat
+ADD https://raw.githubusercontent.com/Loyalsoldier/v2ray-rules-dat/release/geosite.dat /tmp/geodat/geosite.dat
+
+RUN mkdir -p /tmp/empty
+
+# Create config files with empty JSON content
+RUN mkdir -p /tmp/usr/local/etc/xray
+RUN cat <<EOF >/tmp/usr/local/etc/xray/00_log.json
+{
+  "log": {
+    "error": "/var/log/xray/error.log",
+    "loglevel": "warning",
+    "access": "none",
+    "dnsLog": false
+  }
+}
+EOF
+RUN echo '{}' >/tmp/usr/local/etc/xray/01_api.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/02_dns.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/03_routing.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/04_policy.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/05_inbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/06_outbounds.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/07_transport.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/08_stats.json
+RUN echo '{}' >/tmp/usr/local/etc/xray/09_reverse.json
+
+# Create log files
+RUN mkdir -p /tmp/var/log/xray && touch \
+  /tmp/var/log/xray/access.log \
+  /tmp/var/log/xray/error.log
+
+# Build finally image
+# Note on Distroless Base Image and Architecture Support:
+# - The official 'gcr.io/distroless/static' image provided by Google only supports a limited set of architectures for Linux:
+#   - linux/amd64
+#   - linux/arm/v7
+#   - linux/arm64/v8
+#   - linux/ppc64le
+#   - linux/s390x
+# - Upon inspection, the blob contents of the Distroless images across these architectures are nearly identical, with only minor differences in metadata (e.g., 'Architecture' field in the manifest).
+# - Due to this similarity in content, it is feasible to forcibly specify a single platform (e.g., '--platform=linux/amd64') for unsupported architectures, as the core image content remains compatible with statically compiled binaries like Go applications.
+FROM --platform=linux/amd64 gcr.io/distroless/static:nonroot
+
+COPY --from=build --chown=0:0 --chmod=755 /src/xray /usr/local/bin/xray
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/share/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/geodat/*.dat /usr/local/share/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /usr/local/etc/xray
+COPY --from=build --chown=0:0 --chmod=644 /tmp/usr/local/etc/xray/*.json /usr/local/etc/xray/
+COPY --from=build --chown=0:0 --chmod=755 /tmp/empty /var/log/xray
+COPY --from=build --chown=65532:65532 --chmod=600 /tmp/var/log/xray/*.log /var/log/xray/
+
+VOLUME /usr/local/etc/xray
+VOLUME /var/log/xray
+
+ARG TZ=Etc/UTC
+ENV TZ=$TZ
+
+ENTRYPOINT [ "/usr/local/bin/xray" ]
+CMD [ "-confdir", "/usr/local/etc/xray/" ]

.github/workflows/docker.yml

@@ -0,0 +1,133 @@
+name: Build and Push Docker Image
+
+on:
+  release:
+    types:
+      - published
+      - released
+
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "Docker image tag:"
+        required: true
+      latest:
+        description: "Set to latest"
+        type: boolean
+        default: false
+
+jobs:
+  build-and-push:
+    if: (github.event.action != 'published') || (github.event.action == 'published' && github.event.release.prerelease == true)
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Set repository and image name to lowercase
+        env:
+          IMAGE_NAME: "${{ github.repository }}"
+        run: |
+          echo "IMAGE_NAME=${IMAGE_NAME,,}" >>${GITHUB_ENV}
+          echo "FULL_IMAGE_NAME=ghcr.io/${IMAGE_NAME,,}" >>${GITHUB_ENV}
+
+      - name: Validate and extract tag
+        run: |
+          SOURCE_TAG="${{ github.event.inputs.tag }}"
+          if [[ -z "$SOURCE_TAG" ]]; then
+            SOURCE_TAG="${{ github.ref_name }}"
+          fi
+          if [[ -z "$SOURCE_TAG" ]]; then
+            SOURCE_TAG="${{ github.event.release.tag_name }}"
+          fi
+
+          if [[ -z "$SOURCE_TAG" ]]; then
+            echo "Error: Could not determine a valid tag source. Input tag and context tag (github.ref_name) are both empty."
+            exit 1
+          fi
+
+          if [[ "$SOURCE_TAG" =~ ^v[0-9]+\.[0-9] ]]; then
+            IMAGE_TAG="${SOURCE_TAG#v}"
+          else
+            IMAGE_TAG="$SOURCE_TAG"
+          fi
+
+          echo "Docker image tag: '$IMAGE_TAG'."
+          echo "IMAGE_TAG=$IMAGE_TAG" >>${GITHUB_ENV}
+
+          LATEST=false
+          if [[ "${{ github.event_name }}" == "release" && "${{ github.event.release.prerelease }}" == "false" ]] || [[ "${{ github.event_name }}" == "workflow_dispatch" && "${{ github.event.inputs.latest }}" == "true" ]]; then
+            LATEST=true
+          fi
+
+          echo "Latest: '$LATEST'."
+          echo "LATEST=$LATEST" >>${GITHUB_ENV}
+
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build Docker image (main architectures)
+        id: build_main_arches
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: .github/docker/Dockerfile
+          platforms: |
+            linux/amd64
+            linux/arm/v7
+            linux/arm64/v8
+            linux/ppc64le
+            linux/s390x
+          provenance: false
+          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+
+      - name: Build Docker image (additional architectures)
+        id: build_additional_arches
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: .github/docker/Dockerfile.usa
+          platforms: |
+            linux/386
+            linux/arm/v6
+            linux/riscv64
+            linux/loong64
+          provenance: false
+          outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+
+      - name: Create manifest list and push
+        run: |
+          echo "Creating multi-arch manifest with tag: '${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}'."
+          docker buildx imagetools create \
+            --tag ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }} \
+            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_main_arches.outputs.digest }} \
+            ${{ env.FULL_IMAGE_NAME }}@${{ steps.build_additional_arches.outputs.digest }}
+
+          if [[ "${{ env.LATEST }}" == "true" ]]; then
+            echo "Adding 'latest' tag to manifest: '${{ env.FULL_IMAGE_NAME }}:latest'."
+            docker buildx imagetools create \
+            --tag ${{ env.FULL_IMAGE_NAME }}:latest \
+            ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+          fi
+
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:${{ env.IMAGE_TAG }}
+
+          if [[ "${{ env.LATEST }}" == "true" ]]; then
+            docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:latest
+          fi

.github/workflows/release-win7.yml

@@ -0,0 +1,148 @@
+name: Build and Release for Windows 7
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  check-assets:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
+
+  build:
+    needs: check-assets
+    permissions:
+      contents: write
+    strategy:
+      matrix:
+        include:
+          # BEGIN Windows 7
+          - goos: windows
+            goarch: amd64
+            assetname: win7-64
+          - goos: windows
+            goarch: 386
+            assetname: win7-32
+          # END Windows 7
+      fail-fast: false
+
+    runs-on: ubuntu-latest
+    env:
+      GOOS: ${{ matrix.goos}}
+      GOARCH: ${{ matrix.goarch }}
+      CGO_ENABLED: 0
+    steps:
+      - name: Checkout codebase
+        uses: actions/checkout@v5
+
+      - name: Show workflow information
+        run: |
+          _NAME=${{ matrix.assetname }}
+          echo "GOOS: ${{ matrix.goos }}, GOARCH: ${{ matrix.goarch }}, RELEASE_NAME: $_NAME"
+          echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          check-latest: true
+
+      - name: Setup patched builder
+        run: |
+          GOSDK=$(go env GOROOT)
+          rm -r $GOSDK/*
+          cd $GOSDK
+          curl -O -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" https://github.com/XTLS/go-win7/releases/latest/download/go-for-win7-linux-amd64.zip
+          unzip ./go-for-win7-linux-amd64.zip -d $GOSDK
+          rm ./go-for-win7-linux-amd64.zip
+
+      - name: Get project dependencies
+        run: go mod download
+
+      - name: Build Xray
+        run: |
+          mkdir -p build_assets
+          COMMID=$(git describe --always --dirty)
+          echo 'Building Xray for Windows 7...'
+          go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
+          echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
+          # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
+          # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
+        with:
+          path: resources
+          key: xray-geodat-
+
+      - name: Copy README.md & LICENSE
+        run: |
+          mv -f resources/* build_assets
+          cp ${GITHUB_WORKSPACE}/README.md ./build_assets/README.md
+          cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
+
+      - name: Create ZIP archive
+        if: github.event_name == 'release'
+        shell: bash
+        run: |
+          pushd build_assets || exit 1
+          touch -mt $(date +%Y01010000) *
+          zip -9vr ../Xray-${{ env.ASSET_NAME }}.zip .
+          popd || exit 1
+          FILE=./Xray-${{ env.ASSET_NAME }}.zip
+          DGST=$FILE.dgst
+          for METHOD in {"md5","sha1","sha256","sha512"}
+          do
+            openssl dgst -$METHOD $FILE | sed 's/([^)]*)//g' >>$DGST
+          done
+
+      - name: Change the name
+        run: |
+          mv build_assets Xray-${{ env.ASSET_NAME }}
+
+      - name: Upload files to Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: Xray-${{ env.ASSET_NAME }}
+          path: |
+            ./Xray-${{ env.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*
+          tag: ${{ github.ref }}
+          file_glob: true

.github/workflows/release.yml

@@ -5,81 +5,71 @@ on:
   release:
     types: [published]
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
+
 jobs:
-  prepare:
+  check-assets:
     runs-on: ubuntu-latest
     steps:
-      - name: Restore Cache
-        uses: actions/cache/restore@v3
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
         with:
           path: resources
           key: xray-geodat-
 
-      - name: Update Geodat
-        id: update
-        uses: nick-fields/retry@v2
-        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" >> $GITHUB_OUTPUT
-              fi
-            done
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
 
-      - name: Save Cache
-        uses: actions/cache/save@v3
-        if: ${{ steps.update.outputs.unhit }}
+      - name: Trigger Asset Update Workflow if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        uses: actions/github-script@v7
         with:
-          path: resources
-          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const { owner, repo } = context.repo;
+            await github.rest.actions.createWorkflowDispatch({
+              owner,
+              repo,
+              workflow_id: 'scheduled-assets-update.yml',
+              ref: context.ref
+            });
+            console.log('Triggered scheduled-assets-update.yml due to missing assets on branch:', context.ref);
+
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
 
   build:
-    needs: prepare
+    needs: check-assets
     permissions:
       contents: write
     strategy:
       matrix:
         # Include amd64 on all platforms.
-        goos: [windows, freebsd, openbsd, linux, dragonfly, darwin]
+        goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
+        patch-assetname: [""]
         exclude:
-          # Exclude i386 on darwin and dragonfly.
-          - goarch: 386
-            goos: dragonfly
+          # Exclude i386 on darwin
           - goarch: 386
             goos: darwin
         include:
-          # BEIGIN MacOS ARM64
+          # BEGIN MacOS ARM64
           - goos: darwin
             goarch: arm64
           # END MacOS ARM64
@@ -98,6 +88,11 @@ jobs:
           - goos: android
             goarch: arm64
           # END Android ARM 8
+          # BEGIN Android AMD64
+          - goos: android
+            goarch: amd64
+            patch-assetname: android-amd64
+          # END Android AMD64
           # Windows ARM
           - goos: windows
             goarch: arm64
@@ -105,12 +100,14 @@ jobs:
             goarch: arm
             goarm: 7
           # BEGIN Other architectures
-          # BEGIN riscv64 & ARM64
+          # BEGIN riscv64 & ARM64 & LOONG64
           - goos: linux
             goarch: arm64
           - goos: linux
             goarch: riscv64
-          # END riscv64 & ARM64
+          - goos: linux
+            goarch: loong64
+          # END riscv64 & ARM64 & LOONG64
           # BEGIN MIPS
           - goos: linux
             goarch: mips64
@@ -156,56 +153,61 @@ jobs:
       CGO_ENABLED: 0
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v3
+        uses: actions/checkout@v5
 
-      - name: Show workflow information 
+      - name: Set up NDK
+        if: matrix.goos == 'android'
         run: |
-          export _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
+          wget -qO android-ndk.zip https://dl.google.com/android/repository/android-ndk-r28b-linux.zip
+          unzip android-ndk.zip
+          rm android-ndk.zip
+          declare -A arches=(
+            ["amd64"]="x86_64-linux-android24-clang"
+            ["arm64"]="aarch64-linux-android24-clang"
+          )
+          echo CC="$(realpath android-ndk-*/toolchains/llvm/prebuilt/linux-x86_64/bin)/${arches[${{ matrix.goarch }}]}" >> $GITHUB_ENV
+          echo CGO_ENABLED=1 >> $GITHUB_ENV
+
+      - name: Show workflow information
+        run: |
+          _NAME=${{ matrix.patch-assetname }}
+          [ -n "$_NAME" ] || _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
           echo "GOOS: $GOOS, GOARCH: $GOARCH, GOARM: $GOARM, GOMIPS: $GOMIPS, RELEASE_NAME: $_NAME"
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: '1.20'
+          go-version-file: go.mod
           check-latest: true
 
       - 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
-          go build -v -o build_assets/xray -trimpath -ldflags "-s -w -buildid=" ./main
+          COMMID=$(git describe --always --dirty)
+          if [[ ${GOOS} == 'windows' ]]; then
+            echo 'Building Xray for Windows...'
+            go build -o build_assets/xray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            echo 'CreateObject("Wscript.Shell").Run "xray.exe -config config.json",0' > build_assets/xray_no_window.vbs
+            echo 'Start-Process -FilePath ".\xray.exe" -ArgumentList "-config .\config.json" -WindowStyle Hidden' > build_assets/xray_no_window.ps1
+            # The line below is for without running conhost.exe version. Commented for not being used. Provided for reference.
+            # go build -o build_assets/wxray.exe -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-H windowsgui -X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+          else
+            echo 'Building Xray...'
+            if [[ ${GOARCH} == 'mips' || ${GOARCH} == 'mipsle' ]]; then
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+              echo 'Building soft-float Xray for MIPS/MIPSLE 32-bit...'
+              GOMIPS=softfloat go build -o build_assets/xray_softfloat -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            else
+              go build -o build_assets/xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=${COMMID} -s -w -buildid=" -v ./main
+            fi
+          fi
 
-      - name: Build background Xray on Windows 
-        if: matrix.goos == 'windows'
-        run: |
-          go build -v -o build_assets/wxray.exe -trimpath -ldflags "-s -w -H windowsgui -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: Restore Cache
-        uses: actions/cache/restore@v3
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
         with:
           path: resources
           key: xray-geodat-
@@ -217,6 +219,7 @@ jobs:
           cp ${GITHUB_WORKSPACE}/LICENSE ./build_assets/LICENSE
 
       - name: Create ZIP archive
+        if: github.event_name == 'release'
         shell: bash
         run: |
           pushd build_assets || exit 1
@@ -235,7 +238,7 @@ jobs:
           mv build_assets Xray-${{ env.ASSET_NAME }}
 
       - name: Upload files to Artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Xray-${{ env.ASSET_NAME }}
           path: |

.github/workflows/scheduled-assets-update.yml

@@ -0,0 +1,65 @@
+name: Scheduled assets update
+
+# NOTE: This Github Actions is required by other actions, for preparing other packaging assets in a
+#       routine manner, for example: GeoIP/GeoSite.
+#       Currently updating:
+#       - Geodat (GeoIP/Geosite)
+
+on:
+  workflow_dispatch:
+  schedule:
+    # Update GeoData on every day (22:30 UTC)
+    - cron: "30 22 * * *"
+  push:
+    # Prevent triggering update request storm
+    paths:
+      - ".github/workflows/scheduled-assets-update.yml"
+  pull_request:
+    # Prevent triggering update request storm
+    paths:
+      - ".github/workflows/scheduled-assets-update.yml"
+
+jobs:
+  geodat:
+    if: github.event.schedule == '30 22 * * *' || github.event_name == 'push'|| github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore Geodat 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=('Loyalsoldier v2ray-rules-dat geoip geoip' 'Loyalsoldier v2ray-rules-dat geosite geosite')
+            for i in "${LIST[@]}"
+            do
+              INFO=($(echo $i | awk 'BEGIN{FS=" ";OFS=" "} {print $1,$2,$3,$4}'))
+              FILE_NAME="${INFO[3]}.dat"
+              echo -e "Verifying HASH key..."
+              HASH="$(curl -sL -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://raw.githubusercontent.com/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.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/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.dat..."
+                  curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" "https://raw.githubusercontent.com/${INFO[0]}/${INFO[1]}/release/${INFO[2]}.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 Geodat Cache
+        uses: actions/cache/save@v4
+        if: ${{ steps.update.outputs.unhit }}
+        with:
+          path: resources
+          key: xray-geodat-${{ github.sha }}-${{ github.run_number }}

.github/workflows/test.yml

@@ -2,23 +2,40 @@ name: Test
 
 on:
   push:
-    branches:
-      - main
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
   pull_request:
     types: [opened, synchronize, reopened]
-    paths:
-      - "**/*.go"
-      - "go.mod"
-      - "go.sum"
-      - ".github/workflows/*.yml"
 
 jobs:
+  check-assets:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
+        with:
+          path: resources
+          key: xray-geodat-
+      - name: Check Assets Existence
+        id: check-assets
+        run: |
+          [ -d 'resources' ] || mkdir resources
+          LIST=('geoip.dat' 'geosite.dat')
+          for FILE_NAME in "${LIST[@]}"
+          do
+            echo -e "Checking ${FILE_NAME}..."
+            if [ -s "./resources/${FILE_NAME}" ]; then
+              echo -e "${FILE_NAME} exists."
+            else
+              echo -e "${FILE_NAME} does not exist."
+              echo "missing=true" >> $GITHUB_OUTPUT
+              break
+            fi
+          done
+      - name: Sleep for 90 seconds if Assets Missing
+        if: steps.check-assets.outputs.missing == 'true'
+        run: sleep 90
+
   test:
+    needs: check-assets
     permissions:
       contents: read
     runs-on: ${{ matrix.os }}
@@ -27,15 +44,15 @@ jobs:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
     steps:
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: '1.20'
-          check-latest: true
       - name: Checkout codebase
-        uses: actions/checkout@v3
-      - name: Restore Cache
-        uses: actions/cache/restore@v3
+        uses: actions/checkout@v5
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          check-latest: true
+      - name: Restore Geodat Cache
+        uses: actions/cache/restore@v4
         with:
           path: resources
           key: xray-geodat-

.gitignore

@@ -11,18 +11,58 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-# Dependency directories (remove the comment below to include it)
-# vendor/
+# macOS specific files
+.DS_Store
 
-*.DS_Store
-.idea
+# IDE/editor specific files
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Archives and compressed files
 *.zip
 *.tar.gz
+*.tar
+*.gz
+*.bz2
+
+# Go build binaries
 xray
+xray_softfloat
 mockgen
 vprotogen
 !infra/vprotogen/
 errorgen
 !common/errors/errorgen/
 *.dat
-.vscode
+
+# Build assets
+/build_assets/
+
+# Output from dlv test
+**/debug.*
+
+# Certificates and keys
+*.crt
+*.key
+
+# Dependency directories (uncomment if needed)
+# vendor/
+
+# Logs
+*.log
+
+# Coverage reports
+coverage.*
+
+# Node modules (in case of frontend assets)
+node_modules/
+
+# System files
+Thumbs.db
+ehthumbs.db
+
+# Other common ignores
+*.bak
+*.tmp

README.md

@@ -1,92 +1,26 @@
 # Project X
 
-[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).
+[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).
+
+## Donation & NFTs
+
+### [Collect a Project X NFT to support the development of Project X!](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
+[<img alt="Project X NFT" width="150px" src="https://raw2.seadn.io/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/7fa9ce900fb39b44226348db330e32/8b7fa9ce900fb39b44226348db330e32.svg" />](https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/1)
+
+- **ETH/USDT/USDC: `0xDc3Fe44F0f25D13CACb1C4896CD0D321df3146Ee`**
+- **REALITY NFT: https://opensea.io/item/ethereum/0x5ee362866001613093361eb8569d59c4141b76d1/2**
+- **Related links: https://opensea.io/collection/xtls, [Announcement of NFTs by Project X](https://github.com/XTLS/Xray-core/discussions/3633), [XHTTP: Beyond REALITY](https://github.com/XTLS/Xray-core/discussions/4113)**
 
 ## License
 
 [Mozilla Public License Version 2.0](https://github.com/XTLS/Xray-core/blob/main/LICENSE)
 
-## Installation
+## Documentation
 
-- 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)
-- 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)
-
-## Contributing
-[Code Of Conduct](https://github.com/XTLS/Xray-core/blob/main/CODE_OF_CONDUCT.md)
-
-## 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) (This project had been archived and currently inactive)
-- Android
-  - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [Kitsunebi](https://github.com/rurirei/Kitsunebi/tree/release_xtls)
-- iOS & macOS (with M1 chip)
-  - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
-  - [Stash](https://apps.apple.com/app/stash/id1596063349)
-- macOS (Intel chip & M1 chip)
-  - [Qv2ray](https://github.com/Qv2ray/Qv2ray) (This project had been archived and currently inactive)
-  - [V2RayXS](https://github.com/tzmax/V2RayXS)
-
-## Credits
-
-This repo relies on the following third-party projects:
-
-- Special thanks:
-  - [v2fly/v2ray-core](https://github.com/v2fly/v2ray-core)
-- In production:
-  - [ghodss/yaml](https://github.com/ghodss/yaml)
-  - [gorilla/websocket](https://github.com/gorilla/websocket)
-  - [quic-go/quic-go](https://github.com/quic-go/quic-go)
-  - [pelletier/go-toml](https://github.com/pelletier/go-toml)
-  - [pires/go-proxyproto](https://github.com/pires/go-proxyproto)
-  - [refraction-networking/utls](https://github.com/refraction-networking/utls)
-  - [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)
-  - [stretchr/testify](https://github.com/stretchr/testify)
-  - [h12w/socks](https://github.com/h12w/socks)
-
-## Compilation
-
-### Windows
-
-```bash
-go build -o xray.exe -trimpath -ldflags "-s -w -buildid=" ./main
-```
-
-### Linux / macOS
-
-```bash
-go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
-```
+[Project X Official Website](https://xtls.github.io)
 
 ## Telegram
 
@@ -94,6 +28,152 @@ go build -o xray -trimpath -ldflags "-s -w -buildid=" ./main
 
 [Project X Channel](https://t.me/projectXtls)
 
+[Project VLESS](https://t.me/projectVless) (Русский)
+
+[Project XHTTP](https://t.me/projectXhttp) (Persian)
+
+## Installation
+
+- Linux Script
+  - [XTLS/Xray-install](https://github.com/XTLS/Xray-install) (**Official**)
+  - [tempest](https://github.com/team-cloudchaser/tempest) (supports [`systemd`](https://systemd.io) and [OpenRC](https://github.com/OpenRC/openrc); Linux-only)
+- Docker
+  - [ghcr.io/xtls/xray-core](https://ghcr.io/xtls/xray-core) (**Official**)
+  - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
+  - [wulabing/xray_docker](https://github.com/wulabing/xray_docker)
+- Web Panel - **WARNING: Please DO NOT USE plain HTTP panels like 3X-UI**, as they are believed to be bribed by Iran GFW for supporting plain HTTP by default and refused to change (https://github.com/XTLS/Xray-core/pull/3884#issuecomment-2439595331), which has already put many users' data security in danger in the past few years. **If you are already using 3X-UI, please switch to the following panels, which are verified to support HTTPS and SSH port forwarding only:**
+  - [Remnawave](https://github.com/remnawave/panel)
+  - [Marzban](https://github.com/Gozargah/Marzban)
+  - [Xray-UI](https://github.com/qist/xray-ui)
+  - [Hiddify](https://github.com/hiddify/Hiddify-Manager)
+- 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), [VPainLess](https://github.com/vpainless/vpainless)
+  - [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))
+- Asuswrt-Merlin
+  - [XRAYUI](https://github.com/DanielLavrushin/asuswrt-merlin-xrayui)
+- Windows
+  - [v2rayN](https://github.com/2dust/v2rayN)
+  - [Furious](https://github.com/LorenEteval/Furious)
+  - [Invisible Man - Xray](https://github.com/InvisibleManVPN/InvisibleMan-XRayClient)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+- Android
+  - [v2rayNG](https://github.com/2dust/v2rayNG)
+  - [X-flutter](https://github.com/XTLS/X-flutter)
+  - [SaeedDev94/Xray](https://github.com/SaeedDev94/Xray)
+  - [SimpleXray](https://github.com/lhear/SimpleXray)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+- iOS & macOS arm64 & tvOS
+  - [Happ](https://apps.apple.com/app/happ-proxy-utility/id6504287215) ([tvOS](https://apps.apple.com/us/app/happ-proxy-utility-for-tv/id6748297274))
+  - [Streisand](https://apps.apple.com/app/streisand/id6450534064)
+  - [OneXray](https://github.com/OneXray/OneXray)
+- macOS arm64 & x64
+  - [Happ](https://apps.apple.com/app/happ-proxy-utility/id6504287215)
+  - [V2rayU](https://github.com/yanue/V2rayU)
+  - [V2RayXS](https://github.com/tzmax/V2RayXS)
+  - [Furious](https://github.com/LorenEteval/Furious)
+  - [OneXray](https://github.com/OneXray/OneXray)
+  - [GoXRay](https://github.com/goxray/desktop)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+- Linux
+  - [v2rayA](https://github.com/v2rayA/v2rayA)
+  - [Furious](https://github.com/LorenEteval/Furious)
+  - [GorzRay](https://github.com/ketetefid/GorzRay)
+  - [GoXRay](https://github.com/goxray/desktop)
+  - [AnyPortal](https://github.com/AnyPortal/AnyPortal)
+
+## Others that support VLESS, XTLS, REALITY, XUDP, PLUX...
+
+- iOS & macOS arm64 & tvOS
+  - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
+  - [Loon](https://apps.apple.com/us/app/loon/id1373567447)
+- Xray Tools
+  - [xray-knife](https://github.com/lilendian0x00/xray-knife)
+  - [xray-checker](https://github.com/kutovoys/xray-checker)
+- Xray Wrapper
+  - [XTLS/libXray](https://github.com/XTLS/libXray)
+  - [xtls-sdk](https://github.com/remnawave/xtls-sdk)
+  - [xtlsapi](https://github.com/hiddify/xtlsapi)
+  - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
+  - [Xray-core-python](https://github.com/LorenEteval/Xray-core-python)
+  - [xray-api](https://github.com/XVGuardian/xray-api)
+- [XrayR](https://github.com/XrayR-project/XrayR)
+  - [XrayR-release](https://github.com/XrayR-project/XrayR-release)
+  - [XrayR-V2Board](https://github.com/missuo/XrayR-V2Board)
+- Cores
+  - [Amnezia VPN](https://github.com/amnezia-vpn)
+  - [mihomo](https://github.com/MetaCubeX/mihomo)
+  - [sing-box](https://github.com/SagerNet/sing-box)
+
+## Contributing
+
+[Code of Conduct](https://github.com/XTLS/Xray-core/blob/main/CODE_OF_CONDUCT.md)
+
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/XTLS/Xray-core)
+
+## 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).
+
+## One-line Compilation
+
+### Windows (PowerShell)
+
+```powershell
+$env:CGO_ENABLED=0
+go build -o xray.exe -trimpath -buildvcs=false -ldflags="-s -w -buildid=" -v ./main
+```
+
+### Linux / macOS
+
+```bash
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -ldflags="-s -w -buildid=" -v ./main
+```
+
+### Reproducible Releases
+
+Make sure that you are using the same Go version, and remember to set the git commit id (7 bytes):
+
+```bash
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="all=-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
+```
+
+If you are compiling a 32-bit MIPS/MIPSLE target, use this command instead:
+
+```bash
+CGO_ENABLED=0 go build -o xray -trimpath -buildvcs=false -gcflags="-l=4" -ldflags="-X github.com/xtls/xray-core/core.build=REPLACE -s -w -buildid=" -v ./main
+```
+
 ## Stargazers over time
 
 [![Stargazers over time](https://starchart.cc/XTLS/Xray-core.svg)](https://starchart.cc/XTLS/Xray-core)

app/commander/commander.go

@@ -1,13 +1,12 @@
 package commander
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 	"net"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/signal/done"
 	core "github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
@@ -21,12 +20,14 @@ type Commander struct {
 	services []Service
 	ohm      outbound.Manager
 	tag      string
+	listen   string
 }
 
 // NewCommander creates a new Commander based on the given config.
 func NewCommander(ctx context.Context, config *Config) (*Commander, error) {
 	c := &Commander{
-		tag: config.Tag,
+		tag:    config.Tag,
+		listen: config.Listen,
 	}
 
 	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager) {
@@ -44,7 +45,7 @@ func NewCommander(ctx context.Context, config *Config) (*Commander, error) {
 		}
 		service, ok := rawService.(Service)
 		if !ok {
-			return nil, newError("not a Service.")
+			return nil, errors.New("not a Service.")
 		}
 		c.services = append(c.services, service)
 	}
@@ -66,19 +67,32 @@ func (c *Commander) Start() error {
 	}
 	c.Unlock()
 
+	var listen = func(listener net.Listener) {
+		if err := c.server.Serve(listener); err != nil {
+			errors.LogErrorInner(context.Background(), err, "failed to start grpc server")
+		}
+	}
+
+	if len(c.listen) > 0 {
+		if l, err := net.Listen("tcp", c.listen); err != nil {
+			errors.LogErrorInner(context.Background(), err, "API server failed to listen on ", c.listen)
+			return err
+		} else {
+			errors.LogInfo(context.Background(), "API server listening on ", l.Addr())
+			go listen(l)
+		}
+		return nil
+	}
+
 	listener := &OutboundListener{
 		buffer: make(chan net.Conn, 4),
 		done:   done.New(),
 	}
 
-	go func() {
-		if err := c.server.Serve(listener); err != nil {
-			newError("failed to start grpc server").Base(err).AtError().WriteToLog()
-		}
-	}()
+	go listen(listener)
 
 	if err := c.ohm.RemoveHandler(context.Background(), c.tag); err != nil {
-		newError("failed to remove existing handler").WriteToLog()
+		errors.LogInfoInner(context.Background(), err, "failed to remove existing handler")
 	}
 
 	return c.ohm.AddHandler(context.Background(), &Outbound{

app/commander/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/commander/config.proto
 
 package commander
@@ -29,6 +29,8 @@ type Config struct {
 
 	// Tag of the outbound handler that handles grpc connections.
 	Tag string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	// Network address of commander grpc service.
+	Listen string `protobuf:"bytes,3,opt,name=listen,proto3" json:"listen,omitempty"`
 	// Services that supported by this server. All services must implement Service
 	// interface.
 	Service []*serial.TypedMessage `protobuf:"bytes,2,rep,name=service,proto3" json:"service,omitempty"`
@@ -36,11 +38,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_commander_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_commander_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -51,7 +51,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_commander_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -73,6 +73,13 @@ func (x *Config) GetTag() string {
 	return ""
 }
 
+func (x *Config) GetListen() string {
+	if x != nil {
+		return x.Listen
+	}
+	return ""
+}
+
 func (x *Config) GetService() []*serial.TypedMessage {
 	if x != nil {
 		return x.Service
@@ -89,11 +96,9 @@ type ReflectionConfig struct {
 
 func (x *ReflectionConfig) Reset() {
 	*x = ReflectionConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_commander_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_commander_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ReflectionConfig) String() string {
@@ -104,7 +109,7 @@ func (*ReflectionConfig) ProtoMessage() {}
 
 func (x *ReflectionConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_commander_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -127,20 +132,21 @@ var file_app_commander_config_proto_rawDesc = []byte{
 	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72,
 	0x1a, 0x21, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2f,
 	0x74, 0x79, 0x70, 0x65, 0x64, 0x5f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x70, 0x72,
-	0x6f, 0x74, 0x6f, 0x22, 0x56, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a,
+	0x6f, 0x74, 0x6f, 0x22, 0x6e, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x10, 0x0a,
 	0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12,
-	0x3a, 0x0a, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b,
-	0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73,
-	0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61,
-	0x67, 0x65, 0x52, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x22, 0x12, 0x0a, 0x10, 0x52,
-	0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x42,
-	0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
-	0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0x50, 0x01, 0x5a, 0x27, 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, 0x63, 0x6f, 0x6d, 0x6d, 0x61,
-	0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e,
-	0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
-	0x33,
+	0x16, 0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e, 0x12, 0x3a, 0x0a, 0x07, 0x73, 0x65, 0x72, 0x76, 0x69,
+	0x63, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e,
+	0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79,
+	0x70, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x07, 0x73, 0x65, 0x72, 0x76,
+	0x69, 0x63, 0x65, 0x22, 0x12, 0x0a, 0x10, 0x52, 0x65, 0x66, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f,
+	0x6e, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x42, 0x58, 0x0a, 0x16, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
+	0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
+	0x72, 0x50, 0x01, 0x5a, 0x27, 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, 0x63, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65, 0x72, 0xaa, 0x02, 0x12, 0x58,
+	0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x65,
+	0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -156,7 +162,7 @@ func file_app_commander_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_commander_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_commander_config_proto_goTypes = []interface{}{
+var file_app_commander_config_proto_goTypes = []any{
 	(*Config)(nil),              // 0: xray.app.commander.Config
 	(*ReflectionConfig)(nil),    // 1: xray.app.commander.ReflectionConfig
 	(*serial.TypedMessage)(nil), // 2: xray.common.serial.TypedMessage
@@ -175,32 +181,6 @@ func file_app_commander_config_proto_init() {
 	if File_app_commander_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_commander_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_commander_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReflectionConfig); 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{

app/commander/config.proto

@@ -12,6 +12,10 @@ import "common/serial/typed_message.proto";
 message Config {
   // Tag of the outbound handler that handles grpc connections.
   string tag = 1;
+
+  // Network address of commander grpc service.
+  string listen = 3;
+
   // Services that supported by this server. All services must implement Service
   // interface.
   repeated xray.common.serial.TypedMessage service = 2;

app/commander/errors.generated.go

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

app/commander/outbound.go

@@ -5,8 +5,10 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/transport"
 )
@@ -31,7 +33,7 @@ func (l *OutboundListener) add(conn net.Conn) {
 func (l *OutboundListener) Accept() (net.Conn, error) {
 	select {
 	case <-l.done.Wait():
-		return nil, newError("listen closed")
+		return nil, errors.New("listen closed")
 	case c := <-l.buffer:
 		return c, nil
 	}
@@ -107,3 +109,13 @@ func (co *Outbound) Close() error {
 	co.closed = true
 	return co.listener.Close()
 }
+
+// SenderSettings implements outbound.Handler.
+func (co *Outbound) SenderSettings() *serial.TypedMessage {
+	return nil
+}
+
+// ProxySettings implements outbound.Handler.
+func (co *Outbound) ProxySettings() *serial.TypedMessage {
+	return nil
+}

app/dispatcher/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/dispatcher/config.proto
 
 package dispatcher
@@ -28,11 +28,9 @@ type SessionConfig struct {
 
 func (x *SessionConfig) Reset() {
 	*x = SessionConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dispatcher_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dispatcher_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SessionConfig) String() string {
@@ -43,7 +41,7 @@ func (*SessionConfig) ProtoMessage() {}
 
 func (x *SessionConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dispatcher_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -68,11 +66,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dispatcher_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dispatcher_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -83,7 +79,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dispatcher_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -139,7 +135,7 @@ func file_app_dispatcher_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_dispatcher_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_dispatcher_config_proto_goTypes = []interface{}{
+var file_app_dispatcher_config_proto_goTypes = []any{
 	(*SessionConfig)(nil), // 0: xray.app.dispatcher.SessionConfig
 	(*Config)(nil),        // 1: xray.app.dispatcher.Config
 }
@@ -157,32 +153,6 @@ func file_app_dispatcher_config_proto_init() {
 	if File_app_dispatcher_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dispatcher_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SessionConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dispatcher_config_proto_msgTypes[1].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{

app/dispatcher/default.go

@@ -1,16 +1,15 @@
 package dispatcher
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
-	"fmt"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol"
@@ -26,7 +25,7 @@ import (
 	"github.com/xtls/xray-core/transport/pipe"
 )
 
-var errSniffingTimeout = newError("timeout on sniffing")
+var errSniffingTimeout = errors.New("timeout on sniffing")
 
 type cachedReader struct {
 	sync.Mutex
@@ -34,17 +33,21 @@ type cachedReader struct {
 	cache  buf.MultiBuffer
 }
 
-func (r *cachedReader) Cache(b *buf.Buffer) {
-	mb, _ := r.reader.ReadMultiBufferTimeout(time.Millisecond * 100)
+func (r *cachedReader) Cache(b *buf.Buffer, deadline time.Duration) error {
+	mb, err := r.reader.ReadMultiBufferTimeout(deadline)
+	if err != nil {
+		return err
+	}
 	r.Lock()
 	if !mb.IsEmpty() {
 		r.cache, _ = buf.MergeMulti(r.cache, mb)
 	}
 	b.Clear()
-	rawBytes := b.Extend(buf.Size)
+	rawBytes := b.Extend(min(r.cache.Len(), b.Cap()))
 	n := r.cache.Copy(rawBytes)
 	b.Resize(0, int32(n))
 	r.Unlock()
+	return nil
 }
 
 func (r *cachedReader) readInternal() buf.MultiBuffer {
@@ -93,7 +96,6 @@ type DefaultDispatcher struct {
 	router routing.Router
 	policy policy.Manager
 	stats  stats.Manager
-	dns    dns.Client
 	fdns   dns.FakeDNSEngine
 }
 
@@ -101,10 +103,10 @@ 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) {
+			core.OptionalFeatures(ctx, func(fdns dns.FakeDNSEngine) {
 				d.fdns = fdns
 			})
-			return d.Init(config.(*Config), om, router, pm, sm, dc)
+			return d.Init(config.(*Config), om, router, pm, sm)
 		}); err != nil {
 			return nil, err
 		}
@@ -113,12 +115,11 @@ 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) error {
 	d.ohm = om
 	d.router = router
 	d.policy = pm
 	d.stats = sm
-	d.dns = dns
 	return nil
 }
 
@@ -135,77 +136,10 @@ func (*DefaultDispatcher) Start() error {
 // Close implements common.Closable.
 func (*DefaultDispatcher) Close() error { return nil }
 
-func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network, sniffing session.SniffingRequest) (*transport.Link, *transport.Link) {
-	downOpt := pipe.OptionsFromContext(ctx)
-	upOpt := downOpt
-
-	if network == net.Network_UDP {
-		var ip2domain *sync.Map // net.IP.String() => domain, this map is used by server side when client turn on fakedns
-		// Client will send domain address in the buffer.UDP.Address, server record all possible target IP addrs.
-		// When target replies, server will restore the domain and send back to client.
-		// Note: this map is not global but per connection context
-		upOpt = append(upOpt, pipe.OnTransmission(func(mb buf.MultiBuffer) buf.MultiBuffer {
-			for i, buffer := range mb {
-				if buffer.UDP == nil {
-					continue
-				}
-				addr := buffer.UDP.Address
-				if addr.Family().IsIP() {
-					if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(addr) && sniffing.Enabled {
-						domain := fkr0.GetDomainFromFakeDNS(addr)
-						if len(domain) > 0 {
-							buffer.UDP.Address = net.DomainAddress(domain)
-							newError("[fakedns client] override with domain: ", domain, " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
-						} else {
-							newError("[fakedns client] failed to find domain! :", addr.String(), " for xUDP buffer at ", i).AtWarning().WriteToLog(session.ExportIDToError(ctx))
-						}
-					}
-				} else {
-					if ip2domain == nil {
-						ip2domain = new(sync.Map)
-						newError("[fakedns client] create a new map").WriteToLog(session.ExportIDToError(ctx))
-					}
-					domain := addr.Domain()
-					ips, err := d.dns.LookupIP(domain, dns.IPOption{true, true, false})
-					if err == nil {
-						for _, ip := range ips {
-							ip2domain.Store(ip.String(), domain)
-						}
-						newError("[fakedns client] candidate ip: "+fmt.Sprintf("%v", ips), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
-					} else {
-						newError("[fakedns client] failed to look up IP for ", domain, " for xUDP buffer at ", i).Base(err).WriteToLog(session.ExportIDToError(ctx))
-					}
-				}
-			}
-			return mb
-		}))
-		downOpt = append(downOpt, pipe.OnTransmission(func(mb buf.MultiBuffer) buf.MultiBuffer {
-			for i, buffer := range mb {
-				if buffer.UDP == nil {
-					continue
-				}
-				addr := buffer.UDP.Address
-				if addr.Family().IsIP() {
-					if ip2domain == nil {
-						continue
-					}
-					if domain, found := ip2domain.Load(addr.IP().String()); found {
-						buffer.UDP.Address = net.DomainAddress(domain.(string))
-						newError("[fakedns client] restore domain: ", domain.(string), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
-					}
-				} else {
-					if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok {
-						fakeIp := fkr0.GetFakeIPForDomain(addr.Domain())
-						buffer.UDP.Address = fakeIp[0]
-						newError("[fakedns client] restore FakeIP: ", buffer.UDP, fmt.Sprintf("%v", fakeIp), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
-					}
-				}
-			}
-			return mb
-		}))
-	}
-	uplinkReader, uplinkWriter := pipe.New(upOpt...)
-	downlinkReader, downlinkWriter := pipe.New(downOpt...)
+func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *transport.Link) {
+	opt := pipe.OptionsFromContext(ctx)
+	uplinkReader, uplinkWriter := pipe.New(opt...)
+	downlinkReader, downlinkWriter := pipe.New(opt...)
 
 	inboundLink := &transport.Link{
 		Reader: downlinkReader,
@@ -243,6 +177,18 @@ func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network, sn
 				}
 			}
 		}
+
+		if p.Stats.UserOnline {
+			name := "user>>>" + user.Email + ">>>online"
+			if om, _ := stats.GetOrRegisterOnlineMap(d.stats, name); om != nil {
+				sessionInbounds := session.InboundFromContext(ctx)
+				userIP := sessionInbounds.Source.Address.String()
+				om.AddIP(userIP)
+				// log Online user with ips
+				// errors.LogDebug(ctx, "user>>>" + user.Email + ">>>online", om.Count(), om.List())
+
+			}
+		}
 	}
 
 	return inboundLink, outboundLink
@@ -254,8 +200,20 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
 		return false
 	}
 	for _, d := range request.ExcludeForDomain {
-		if strings.ToLower(domain) == d {
-			return false
+		if strings.HasPrefix(d, "regexp:") {
+			pattern := d[7:]
+			re, err := regexp.Compile(pattern)
+			if err != nil {
+				errors.LogInfo(ctx, "Unable to compile regex")
+				continue
+			}
+			if re.MatchString(domain) {
+				return false
+			}
+		} else {
+			if strings.ToLower(domain) == d {
+				return false
+			}
 		}
 	}
 	protocolString := result.Protocol()
@@ -263,12 +221,12 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
 		protocolString = resComp.ProtocolForDomainResult()
 	}
 	for _, p := range request.OverrideDestinationForProtocol {
-		if strings.HasPrefix(protocolString, p) {
+		if strings.HasPrefix(protocolString, p) || strings.HasPrefix(p, protocolString) {
 			return true
 		}
 		if fkr0, ok := d.fdns.(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))
+			fkr0.IsIPInIPPool(destination.Address) {
+			errors.LogInfo(ctx, "Using sniffer ", protocolString, " since the fake DNS missed")
 			return true
 		}
 		if resultSubset, ok := result.(SnifferIsProtoSubsetOf); ok {
@@ -286,10 +244,14 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	if !destination.IsValid() {
 		panic("Dispatcher: Invalid destination.")
 	}
-	ob := &session.Outbound{
-		Target: destination,
+	outbounds := session.OutboundsFromContext(ctx)
+	if len(outbounds) == 0 {
+		outbounds = []*session.Outbound{{}}
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
-	ctx = session.ContextWithOutbound(ctx, ob)
+	ob := outbounds[len(outbounds)-1]
+	ob.OriginalTarget = destination
+	ob.Target = destination
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
@@ -297,7 +259,7 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	}
 
 	sniffingRequest := content.SniffingRequest
-	inbound, outbound := d.getLink(ctx, destination.Network, sniffingRequest)
+	inbound, outbound := d.getLink(ctx)
 	if !sniffingRequest.Enabled {
 		go d.routedDispatch(ctx, outbound, destination)
 	} else {
@@ -312,9 +274,17 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 			}
 			if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
 				domain := result.Domain()
-				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfo(ctx, "sniffed domain: ", domain)
 				destination.Address = net.ParseAddress(domain)
-				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
+				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
@@ -329,12 +299,16 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 // DispatchLink implements routing.Dispatcher.
 func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.Destination, outbound *transport.Link) error {
 	if !destination.IsValid() {
-		return newError("Dispatcher: Invalid destination.")
+		return errors.New("Dispatcher: Invalid destination.")
 	}
-	ob := &session.Outbound{
-		Target: destination,
+	outbounds := session.OutboundsFromContext(ctx)
+	if len(outbounds) == 0 {
+		outbounds = []*session.Outbound{{}}
+		ctx = session.ContextWithOutbounds(ctx, outbounds)
 	}
-	ctx = session.ContextWithOutbound(ctx, ob)
+	ob := outbounds[len(outbounds)-1]
+	ob.OriginalTarget = destination
+	ob.Target = destination
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
@@ -342,36 +316,42 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 	}
 	sniffingRequest := content.SniffingRequest
 	if !sniffingRequest.Enabled {
-		go d.routedDispatch(ctx, outbound, destination)
+		d.routedDispatch(ctx, outbound, destination)
 	} else {
-		go func() {
-			cReader := &cachedReader{
-				reader: outbound.Reader.(*pipe.Reader),
+		cReader := &cachedReader{
+			reader: outbound.Reader.(*pipe.Reader),
+		}
+		outbound.Reader = cReader
+		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
+		if err == nil {
+			content.Protocol = result.Protocol()
+		}
+		if err == nil && d.shouldOverride(ctx, result, sniffingRequest, destination) {
+			domain := result.Domain()
+			errors.LogInfo(ctx, "sniffed domain: ", domain)
+			destination.Address = net.ParseAddress(domain)
+			protocol := result.Protocol()
+			if resComp, ok := result.(SnifferResultComposite); ok {
+				protocol = resComp.ProtocolForDomainResult()
 			}
-			outbound.Reader = cReader
-			result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
-			if err == nil {
-				content.Protocol = result.Protocol()
+			isFakeIP := false
+			if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(ob.Target.Address) {
+				isFakeIP = true
 			}
-			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)
-				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
-					ob.RouteTarget = destination
-				} else {
-					ob.Target = destination
-				}
+			if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
+				ob.RouteTarget = destination
+			} else {
+				ob.Target = destination
 			}
-			d.routedDispatch(ctx, outbound, destination)
-		}()
+		}
+		d.routedDispatch(ctx, outbound, destination)
 	}
 
 	return nil
 }
 
 func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, network net.Network) (SniffResult, error) {
-	payload := buf.New()
+	payload := buf.NewWithSize(32767)
 	defer payload.Release()
 
 	sniffer := NewSniffer(ctx)
@@ -383,26 +363,36 @@ func sniffer(ctx context.Context, cReader *cachedReader, metadataOnly bool, netw
 	}
 
 	contentResult, contentErr := func() (SniffResult, error) {
+		cacheDeadline := 200 * time.Millisecond
 		totalAttempt := 0
 		for {
 			select {
 			case <-ctx.Done():
 				return nil, ctx.Err()
 			default:
-				totalAttempt++
-				if totalAttempt > 2 {
-					return nil, errSniffingTimeout
+				cachingStartingTimeStamp := time.Now()
+				err := cReader.Cache(payload, cacheDeadline)
+				if err != nil {
+					return nil, err
 				}
+				cachingTimeElapsed := time.Since(cachingStartingTimeStamp)
+				cacheDeadline -= cachingTimeElapsed
 
-				cReader.Cache(payload)
 				if !payload.IsEmpty() {
 					result, err := sniffer.Sniff(ctx, payload.Bytes(), network)
-					if err != common.ErrNoClue {
+					switch err {
+					case common.ErrNoClue: // No Clue: protocol not matches, and sniffer cannot determine whether there will be a match or not
+						totalAttempt++
+					case protocol.ErrProtoNeedMoreData: // Protocol Need More Data: protocol matches, but need more data to complete sniffing
+						// in this case, do not add totalAttempt(allow to read until timeout)
+					default:
 						return result, err
 					}
+				} else {
+					totalAttempt++
 				}
-				if payload.IsFull() {
-					return nil, errUnknownContent
+				if totalAttempt >= 2 || cacheDeadline <= 0 {
+					return nil, errSniffingTimeout
 				}
 			}
 		}
@@ -415,21 +405,9 @@ 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 proxied != nil {
-			ro := ob.RouteTarget == destination
-			destination.Address = *proxied
-			if ro {
-				ob.RouteTarget = destination
-			} else {
-				ob.Target = destination
-			}
-		}
-	}
+	outbounds := session.OutboundsFromContext(ctx)
+	ob := outbounds[len(outbounds)-1]
 
 	var handler outbound.Handler
 
@@ -440,10 +418,10 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 		ctx = session.SetForcedOutboundTagToContext(ctx, "")
 		if h := d.ohm.GetHandler(forcedOutboundTag); h != nil {
 			isPickRoute = 1
-			newError("taking platform initialized detour [", forcedOutboundTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "taking platform initialized detour [", forcedOutboundTag, "] for [", destination, "]")
 			handler = h
 		} else {
-			newError("non existing tag for platform initialized detour: ", forcedOutboundTag).AtError().WriteToLog(session.ExportIDToError(ctx))
+			errors.LogError(ctx, "non existing tag for platform initialized detour: ", forcedOutboundTag)
 			common.Close(link.Writer)
 			common.Interrupt(link.Reader)
 			return
@@ -453,13 +431,17 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 			outTag := route.GetOutboundTag()
 			if h := d.ohm.GetHandler(outTag); h != nil {
 				isPickRoute = 2
-				newError("taking detour [", outTag, "] for [", destination, "]").WriteToLog(session.ExportIDToError(ctx))
+				if route.GetRuleTag() == "" {
+					errors.LogInfo(ctx, "taking detour [", outTag, "] for [", destination, "]")
+				} else {
+					errors.LogInfo(ctx, "Hit route rule: [", route.GetRuleTag(), "] so taking detour [", outTag, "] for [", destination, "]")
+				}
 				handler = h
 			} else {
-				newError("non existing outTag: ", outTag).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+				errors.LogWarning(ctx, "non existing outTag: ", outTag)
 			}
 		} else {
-			newError("default route for ", destination).WriteToLog(session.ExportIDToError(ctx))
+			errors.LogInfo(ctx, "default route for ", destination)
 		}
 	}
 
@@ -468,12 +450,13 @@ func (d *DefaultDispatcher) routedDispatch(ctx context.Context, link *transport.
 	}
 
 	if handler == nil {
-		newError("default outbound handler not exist").WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfo(ctx, "default outbound handler not exist")
 		common.Close(link.Writer)
 		common.Interrupt(link.Reader)
 		return
 	}
 
+	ob.Tag = handler.Tag()
 	if accessMessage := log.AccessMessageFromContext(ctx); accessMessage != nil {
 		if tag := handler.Tag(); tag != "" {
 			if inTag == "" {

app/dispatcher/dispatcher.go

@@ -1,3 +1 @@
 package dispatcher
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/dispatcher/errors.generated.go

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

app/dispatcher/fakednssniffer.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
@@ -22,15 +23,16 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 	}
 
 	if fakeDNSEngine == nil {
-		errNotInit := newError("FakeDNSEngine is not initialized, but such a sniffer is used").AtError()
+		errNotInit := errors.New("FakeDNSEngine is not initialized, but such a sniffer is used").AtError()
 		return protocolSnifferWithMetadata{}, errNotInit
 	}
 	return protocolSnifferWithMetadata{protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
-		Target := session.OutboundFromContext(ctx).Target
-		if Target.Network == net.Network_TCP || Target.Network == net.Network_UDP {
-			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(Target.Address)
+		outbounds := session.OutboundsFromContext(ctx)
+		ob := outbounds[len(outbounds)-1]
+		if ob.Target.Network == net.Network_TCP || ob.Target.Network == net.Network_UDP {
+			domainFromFakeDNS := fakeDNSEngine.GetDomainFromFakeDNS(ob.Target.Address)
 			if domainFromFakeDNS != "" {
-				newError("fake dns got domain: ", domainFromFakeDNS, " for ip: ", Target.Address.String()).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfo(ctx, "fake dns got domain: ", domainFromFakeDNS, " for ip: ", ob.Target.Address.String())
 				return &fakeDNSSniffResult{domainName: domainFromFakeDNS}, nil
 			}
 		}
@@ -38,7 +40,7 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
 		if ipAddressInRangeValueI := ctx.Value(ipAddressInRange); ipAddressInRangeValueI != nil {
 			ipAddressInRangeValue := ipAddressInRangeValueI.(*ipAddressInRangeOpt)
 			if fkr0, ok := fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
-				inPool := fkr0.IsIPInIPPool(Target.Address)
+				inPool := fkr0.IsIPInIPPool(ob.Target.Address)
 				ipAddressInRangeValue.addressInRange = &inPool
 			}
 		}
@@ -108,10 +110,10 @@ func newFakeDNSThenOthers(ctx context.Context, fakeDNSSniffer protocolSnifferWit
 					}
 					return nil, common.ErrNoClue
 				}
-				newError("ip address not in fake dns range, return as is").AtDebug().WriteToLog()
+				errors.LogDebug(ctx, "ip address not in fake dns range, return as is")
 				return nil, common.ErrNoClue
 			}
-			newError("fake dns sniffer did not set address in range option, assume false.").AtWarning().WriteToLog()
+			errors.LogWarning(ctx, "fake dns sniffer did not set address in range option, assume false.")
 			return nil, common.ErrNoClue
 		},
 		metadataSniffer: false,

app/dispatcher/sniffer.go

@@ -4,7 +4,9 @@ import (
 	"context"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/protocol/bittorrent"
 	"github.com/xtls/xray-core/common/protocol/http"
 	"github.com/xtls/xray-core/common/protocol/quic"
@@ -34,7 +36,7 @@ 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 http.SniffHTTP(b, c) }, 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},
@@ -52,19 +54,22 @@ func NewSniffer(ctx context.Context) *Sniffer {
 	return ret
 }
 
-var errUnknownContent = newError("unknown content")
+var errUnknownContent = errors.New("unknown content")
 
 func (s *Sniffer) Sniff(c context.Context, payload []byte, network net.Network) (SniffResult, error) {
 	var pendingSniffer []protocolSnifferWithMetadata
 	for _, si := range s.sniffer {
-		s := si.protocolSniffer
+		protocolSniffer := si.protocolSniffer
 		if si.metadataSniffer || si.network != network {
 			continue
 		}
-		result, err := s(c, payload)
+		result, err := protocolSniffer(c, payload)
 		if err == common.ErrNoClue {
 			pendingSniffer = append(pendingSniffer, si)
 			continue
+		} else if err == protocol.ErrProtoNeedMoreData { // Sniffer protocol matched, but need more data to complete sniffing
+			s.sniffer = []protocolSnifferWithMetadata{si}
+			return nil, err
 		}
 
 		if err == nil && result != nil {

app/dns/cache_controller.go

@@ -0,0 +1,188 @@
+package dns
+
+import (
+	"context"
+	go_errors "errors"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/signal/pubsub"
+	"github.com/xtls/xray-core/common/task"
+	dns_feature "github.com/xtls/xray-core/features/dns"
+	"golang.org/x/net/dns/dnsmessage"
+	"sync"
+	"time"
+)
+
+type CacheController struct {
+	sync.RWMutex
+	ips          map[string]*record
+	pub          *pubsub.Service
+	cacheCleanup *task.Periodic
+	name         string
+	disableCache bool
+}
+
+func NewCacheController(name string, disableCache bool) *CacheController {
+	c := &CacheController{
+		name:         name,
+		disableCache: disableCache,
+		ips:          make(map[string]*record),
+		pub:          pubsub.NewService(),
+	}
+
+	c.cacheCleanup = &task.Periodic{
+		Interval: time.Minute,
+		Execute:  c.CacheCleanup,
+	}
+	return c
+}
+
+// CacheCleanup clears expired items from cache
+func (c *CacheController) CacheCleanup() error {
+	now := time.Now()
+	c.Lock()
+	defer c.Unlock()
+
+	if len(c.ips) == 0 {
+		return errors.New("nothing to do. stopping...")
+	}
+
+	for domain, record := range c.ips {
+		if record.A != nil && record.A.Expire.Before(now) {
+			record.A = nil
+		}
+		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
+			record.AAAA = nil
+		}
+
+		if record.A == nil && record.AAAA == nil {
+			errors.LogDebug(context.Background(), c.name, "cache cleanup ", domain)
+			delete(c.ips, domain)
+		} else {
+			c.ips[domain] = record
+		}
+	}
+
+	if len(c.ips) == 0 {
+		c.ips = make(map[string]*record)
+	}
+
+	return nil
+}
+
+func (c *CacheController) updateIP(req *dnsRequest, ipRec *IPRecord) {
+	elapsed := time.Since(req.start)
+
+	c.Lock()
+	rec, found := c.ips[req.domain]
+	if !found {
+		rec = &record{}
+	}
+
+	switch req.reqType {
+	case dnsmessage.TypeA:
+		rec.A = ipRec
+	case dnsmessage.TypeAAAA:
+		rec.AAAA = ipRec
+	}
+
+	errors.LogInfo(context.Background(), c.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed)
+	c.ips[req.domain] = rec
+
+	switch req.reqType {
+	case dnsmessage.TypeA:
+		c.pub.Publish(req.domain+"4", nil)
+		if !c.disableCache {
+			_, _, err := rec.AAAA.getIPs()
+			if !go_errors.Is(err, errRecordNotFound) {
+				c.pub.Publish(req.domain+"6", nil)
+			}
+		}
+	case dnsmessage.TypeAAAA:
+		c.pub.Publish(req.domain+"6", nil)
+		if !c.disableCache {
+			_, _, err := rec.A.getIPs()
+			if !go_errors.Is(err, errRecordNotFound) {
+				c.pub.Publish(req.domain+"4", nil)
+			}
+		}
+	}
+
+	c.Unlock()
+	common.Must(c.cacheCleanup.Start())
+}
+
+func (c *CacheController) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
+	c.RLock()
+	record, found := c.ips[domain]
+	c.RUnlock()
+
+	if !found {
+		return nil, 0, errRecordNotFound
+	}
+
+	var errs []error
+	var allIPs []net.IP
+	var rTTL uint32 = dns_feature.DefaultTTL
+
+	mergeReq := option.IPv4Enable && option.IPv6Enable
+
+	if option.IPv4Enable {
+		ips, ttl, err := record.A.getIPs()
+		if !mergeReq || go_errors.Is(err, errRecordNotFound) {
+			return ips, ttl, err
+		}
+		if ttl < rTTL {
+			rTTL = ttl
+		}
+		if len(ips) > 0 {
+			allIPs = append(allIPs, ips...)
+		} else {
+			errs = append(errs, err)
+		}
+	}
+
+	if option.IPv6Enable {
+		ips, ttl, err := record.AAAA.getIPs()
+		if !mergeReq || go_errors.Is(err, errRecordNotFound) {
+			return ips, ttl, err
+		}
+		if ttl < rTTL {
+			rTTL = ttl
+		}
+		if len(ips) > 0 {
+			allIPs = append(allIPs, ips...)
+		} else {
+			errs = append(errs, err)
+		}
+	}
+
+	if len(allIPs) > 0 {
+		return allIPs, rTTL, nil
+	}
+	if go_errors.Is(errs[0], errs[1]) {
+		return nil, rTTL, errs[0]
+	}
+	return nil, rTTL, errors.Combine(errs...)
+}
+
+func (c *CacheController) registerSubscribers(domain string, option dns_feature.IPOption) (sub4 *pubsub.Subscriber, sub6 *pubsub.Subscriber) {
+	// ipv4 and ipv6 belong to different subscription groups
+	if option.IPv4Enable {
+		sub4 = c.pub.Subscribe(domain + "4")
+	}
+	if option.IPv6Enable {
+		sub6 = c.pub.Subscribe(domain + "6")
+	}
+	return
+}
+
+func closeSubscribers(sub4 *pubsub.Subscriber, sub6 *pubsub.Subscriber) {
+	if sub4 != nil {
+		sub4.Close()
+	}
+	if sub6 != nil {
+		sub6.Close()
+	}
+}

app/dns/config.go

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

app/dns/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/dns/config.proto
 
 package dns
@@ -80,6 +80,7 @@ const (
 	QueryStrategy_USE_IP  QueryStrategy = 0
 	QueryStrategy_USE_IP4 QueryStrategy = 1
 	QueryStrategy_USE_IP6 QueryStrategy = 2
+	QueryStrategy_USE_SYS QueryStrategy = 3
 )
 
 // Enum value maps for QueryStrategy.
@@ -88,11 +89,13 @@ var (
 		0: "USE_IP",
 		1: "USE_IP4",
 		2: "USE_IP6",
+		3: "USE_SYS",
 	}
 	QueryStrategy_value = map[string]int32{
 		"USE_IP":  0,
 		"USE_IP4": 1,
 		"USE_IP6": 2,
+		"USE_SYS": 3,
 	}
 )
 
@@ -132,17 +135,23 @@ type NameServer struct {
 	ClientIp          []byte                       `protobuf:"bytes,5,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
 	SkipFallback      bool                         `protobuf:"varint,6,opt,name=skipFallback,proto3" json:"skipFallback,omitempty"`
 	PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
-	Geoip             []*router.GeoIP              `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
+	ExpectedGeoip     []*router.GeoIP              `protobuf:"bytes,3,rep,name=expected_geoip,json=expectedGeoip,proto3" json:"expected_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"`
+	ActPrior          bool                         `protobuf:"varint,8,opt,name=actPrior,proto3" json:"actPrior,omitempty"`
+	Tag               string                       `protobuf:"bytes,9,opt,name=tag,proto3" json:"tag,omitempty"`
+	TimeoutMs         uint64                       `protobuf:"varint,10,opt,name=timeoutMs,proto3" json:"timeoutMs,omitempty"`
+	DisableCache      bool                         `protobuf:"varint,11,opt,name=disableCache,proto3" json:"disableCache,omitempty"`
+	FinalQuery        bool                         `protobuf:"varint,12,opt,name=finalQuery,proto3" json:"finalQuery,omitempty"`
+	UnexpectedGeoip   []*router.GeoIP              `protobuf:"bytes,13,rep,name=unexpected_geoip,json=unexpectedGeoip,proto3" json:"unexpected_geoip,omitempty"`
+	ActUnprior        bool                         `protobuf:"varint,14,opt,name=actUnprior,proto3" json:"actUnprior,omitempty"`
 }
 
 func (x *NameServer) Reset() {
 	*x = NameServer{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *NameServer) String() string {
@@ -153,7 +162,7 @@ func (*NameServer) ProtoMessage() {}
 
 func (x *NameServer) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -196,9 +205,9 @@ func (x *NameServer) GetPrioritizedDomain() []*NameServer_PriorityDomain {
 	return nil
 }
 
-func (x *NameServer) GetGeoip() []*router.GeoIP {
+func (x *NameServer) GetExpectedGeoip() []*router.GeoIP {
 	if x != nil {
-		return x.Geoip
+		return x.ExpectedGeoip
 	}
 	return nil
 }
@@ -210,24 +219,70 @@ func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
 	return nil
 }
 
+func (x *NameServer) GetQueryStrategy() QueryStrategy {
+	if x != nil {
+		return x.QueryStrategy
+	}
+	return QueryStrategy_USE_IP
+}
+
+func (x *NameServer) GetActPrior() bool {
+	if x != nil {
+		return x.ActPrior
+	}
+	return false
+}
+
+func (x *NameServer) GetTag() string {
+	if x != nil {
+		return x.Tag
+	}
+	return ""
+}
+
+func (x *NameServer) GetTimeoutMs() uint64 {
+	if x != nil {
+		return x.TimeoutMs
+	}
+	return 0
+}
+
+func (x *NameServer) GetDisableCache() bool {
+	if x != nil {
+		return x.DisableCache
+	}
+	return false
+}
+
+func (x *NameServer) GetFinalQuery() bool {
+	if x != nil {
+		return x.FinalQuery
+	}
+	return false
+}
+
+func (x *NameServer) GetUnexpectedGeoip() []*router.GeoIP {
+	if x != nil {
+		return x.UnexpectedGeoip
+	}
+	return nil
+}
+
+func (x *NameServer) GetActUnprior() bool {
+	if x != nil {
+		return x.ActUnprior
+	}
+	return false
+}
+
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	// Nameservers used by this DNS. Only traditional UDP servers are support at
-	// the moment. A special value 'localhost' as a domain address can be set to
-	// use DNS on local system.
-	//
-	// Deprecated: Do not use.
-	NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,proto3" json:"NameServers,omitempty"`
 	// NameServer list used by this DNS client.
+	// A special value 'localhost' as a domain address can be set to use DNS on local system.
 	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: 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).
 	ClientIp    []byte                `protobuf:"bytes,3,opt,name=client_ip,json=clientIp,proto3" json:"client_ip,omitempty"`
@@ -243,11 +298,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -258,7 +311,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -273,14 +326,6 @@ func (*Config) Descriptor() ([]byte, []int) {
 	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
 }
 
-// Deprecated: Do not use.
-func (x *Config) GetNameServers() []*net.Endpoint {
-	if x != nil {
-		return x.NameServers
-	}
-	return nil
-}
-
 func (x *Config) GetNameServer() []*NameServer {
 	if x != nil {
 		return x.NameServer
@@ -288,14 +333,6 @@ func (x *Config) GetNameServer() []*NameServer {
 	return nil
 }
 
-// Deprecated: Do not use.
-func (x *Config) GetHosts() map[string]*net.IPOrDomain {
-	if x != nil {
-		return x.Hosts
-	}
-	return nil
-}
-
 func (x *Config) GetClientIp() []byte {
 	if x != nil {
 		return x.ClientIp
@@ -356,11 +393,9 @@ type NameServer_PriorityDomain struct {
 
 func (x *NameServer_PriorityDomain) Reset() {
 	*x = NameServer_PriorityDomain{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *NameServer_PriorityDomain) String() string {
@@ -371,7 +406,7 @@ func (*NameServer_PriorityDomain) ProtoMessage() {}
 
 func (x *NameServer_PriorityDomain) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -411,11 +446,9 @@ type NameServer_OriginalRule struct {
 
 func (x *NameServer_OriginalRule) Reset() {
 	*x = NameServer_OriginalRule{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *NameServer_OriginalRule) String() string {
@@ -426,7 +459,7 @@ func (*NameServer_OriginalRule) ProtoMessage() {}
 
 func (x *NameServer_OriginalRule) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -470,11 +503,9 @@ type Config_HostMapping struct {
 
 func (x *Config_HostMapping) Reset() {
 	*x = Config_HostMapping{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config_HostMapping) String() string {
@@ -484,8 +515,8 @@ func (x *Config_HostMapping) String() string {
 func (*Config_HostMapping) ProtoMessage() {}
 
 func (x *Config_HostMapping) ProtoReflect() protoreflect.Message {
-	mi := &file_app_dns_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_dns_config_proto_msgTypes[4]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -497,7 +528,7 @@ func (x *Config_HostMapping) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Config_HostMapping.ProtoReflect.Descriptor instead.
 func (*Config_HostMapping) Descriptor() ([]byte, []int) {
-	return file_app_dns_config_proto_rawDescGZIP(), []int{1, 1}
+	return file_app_dns_config_proto_rawDescGZIP(), []int{1, 0}
 }
 
 func (x *Config_HostMapping) GetType() DomainMatchingType {
@@ -533,103 +564,109 @@ var File_app_dns_config_proto protoreflect.FileDescriptor
 var file_app_dns_config_proto_rawDesc = []byte{
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+	0x02, 0x12, 0x0b, 0x0a, 0x07, 0x55, 0x53, 0x45, 0x5f, 0x53, 0x59, 0x53, 0x10, 0x03, 0x42, 0x46,
+	0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x64,
+	0x6e, 0x73, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
+	0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f,
+	0x61, 0x70, 0x70, 0x2f, 0x64, 0x6e, 0x73, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41,
+	0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -645,38 +682,35 @@ func file_app_dns_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_dns_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
-var file_app_dns_config_proto_goTypes = []interface{}{
+var file_app_dns_config_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_app_dns_config_proto_goTypes = []any{
 	(DomainMatchingType)(0),           // 0: xray.app.dns.DomainMatchingType
 	(QueryStrategy)(0),                // 1: xray.app.dns.QueryStrategy
 	(*NameServer)(nil),                // 2: xray.app.dns.NameServer
 	(*Config)(nil),                    // 3: xray.app.dns.Config
 	(*NameServer_PriorityDomain)(nil), // 4: xray.app.dns.NameServer.PriorityDomain
 	(*NameServer_OriginalRule)(nil),   // 5: xray.app.dns.NameServer.OriginalRule
-	nil,                               // 6: xray.app.dns.Config.HostsEntry
-	(*Config_HostMapping)(nil),        // 7: xray.app.dns.Config.HostMapping
-	(*net.Endpoint)(nil),              // 8: xray.common.net.Endpoint
-	(*router.GeoIP)(nil),              // 9: xray.app.router.GeoIP
-	(*net.IPOrDomain)(nil),            // 10: xray.common.net.IPOrDomain
+	(*Config_HostMapping)(nil),        // 6: xray.app.dns.Config.HostMapping
+	(*net.Endpoint)(nil),              // 7: xray.common.net.Endpoint
+	(*router.GeoIP)(nil),              // 8: xray.app.router.GeoIP
 }
 var file_app_dns_config_proto_depIdxs = []int32{
-	8,  // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
+	7,  // 0: xray.app.dns.NameServer.address:type_name -> xray.common.net.Endpoint
 	4,  // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
-	9,  // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
+	8,  // 2: xray.app.dns.NameServer.expected_geoip:type_name -> xray.app.router.GeoIP
 	5,  // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
-	8,  // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
-	2,  // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
-	6,  // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
-	7,  // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
+	1,  // 4: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
+	8,  // 5: xray.app.dns.NameServer.unexpected_geoip:type_name -> xray.app.router.GeoIP
+	2,  // 6: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
+	6,  // 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
+	0,  // 10: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
+	11, // [11:11] is the sub-list for method output_type
+	11, // [11:11] is the sub-list for method input_type
+	11, // [11:11] is the sub-list for extension type_name
+	11, // [11:11] is the sub-list for extension extendee
+	0,  // [0:11] is the sub-list for field type_name
 }
 
 func init() { file_app_dns_config_proto_init() }
@@ -684,75 +718,13 @@ func file_app_dns_config_proto_init() {
 	if File_app_dns_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dns_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[1].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_dns_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer_PriorityDomain); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NameServer_OriginalRule); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Config_HostMapping); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_dns_config_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   6,
+			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

app/dns/config.proto

@@ -6,7 +6,6 @@ option go_package = "github.com/xtls/xray-core/app/dns";
 option java_package = "com.xray.app.dns";
 option java_multiple_files = true;
 
-import "common/net/address.proto";
 import "common/net/destination.proto";
 import "app/router/config.proto";
 
@@ -26,8 +25,16 @@ message NameServer {
   }
 
   repeated PriorityDomain prioritized_domain = 2;
-  repeated xray.app.router.GeoIP geoip = 3;
+  repeated xray.app.router.GeoIP expected_geoip = 3;
   repeated OriginalRule original_rules = 4;
+  QueryStrategy query_strategy = 7;
+  bool actPrior = 8;
+  string tag = 9;
+  uint64 timeoutMs = 10;
+  bool disableCache = 11;
+  bool finalQuery = 12;
+  repeated xray.app.router.GeoIP unexpected_geoip = 13;
+  bool actUnprior = 14;
 }
 
 enum DomainMatchingType {
@@ -41,21 +48,14 @@ enum QueryStrategy {
   USE_IP = 0;
   USE_IP4 = 1;
   USE_IP6 = 2;
+  USE_SYS = 3;
 }
 
 message Config {
-  // Nameservers used by this DNS. Only traditional UDP servers are support at
-  // the moment. A special value 'localhost' as a domain address can be set to
-  // use DNS on local system.
-  repeated xray.common.net.Endpoint NameServers = 1 [deprecated = true];
-
   // NameServer list used by this DNS client.
+  // A special value 'localhost' as a domain address can be set to use DNS on local system.
   repeated NameServer name_server = 5;
 
-  // Static hosts. Domain to IP.
-  // Deprecated. Use static_hosts.
-  map<string, xray.common.net.IPOrDomain> Hosts = 2 [deprecated = true];
-
   // Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes
   // (IPv6).
   bytes client_ip = 3;

app/dns/dns.go

@@ -1,29 +1,25 @@
 // Package dns is an implementation of core.DNS feature.
 package dns
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
+	go_errors "errors"
 	"fmt"
+	"sort"
 	"strings"
 	"sync"
 
-	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/strmatcher"
-	"github.com/xtls/xray-core/features"
 	"github.com/xtls/xray-core/features/dns"
 )
 
 // DNS is a DNS rely server.
 type DNS struct {
 	sync.Mutex
-	tag                    string
-	disableCache           bool
 	disableFallback        bool
 	disableFallbackIfMatch bool
 	ipOption               *dns.IPOption
@@ -32,6 +28,7 @@ type DNS struct {
 	ctx                    context.Context
 	domainMatcher          strmatcher.IndexMatcher
 	matcherInfos           []*DomainMatcherInfo
+	checkSystem            bool
 }
 
 // DomainMatcherInfo contains information attached to index returned by Server.domainMatcher
@@ -42,50 +39,59 @@ type DomainMatcherInfo struct {
 
 // New creates a new DNS server with given configuration.
 func New(ctx context.Context, config *Config) (*DNS, error) {
-	var tag string
-	if len(config.Tag) > 0 {
-		tag = config.Tag
-	} else {
-		tag = generateRandomTag()
-	}
-
 	var clientIP net.IP
 	switch len(config.ClientIp) {
 	case 0, net.IPv4len, net.IPv6len:
 		clientIP = net.IP(config.ClientIp)
 	default:
-		return nil, newError("unexpected client IP length ", len(config.ClientIp))
+		return nil, errors.New("unexpected client IP length ", len(config.ClientIp))
 	}
 
-	var ipOption *dns.IPOption
+	var ipOption dns.IPOption
+	checkSystem := false
 	switch config.QueryStrategy {
 	case QueryStrategy_USE_IP:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
 		}
+	case QueryStrategy_USE_SYS:
+		ipOption = dns.IPOption{
+			IPv4Enable: true,
+			IPv6Enable: true,
+			FakeEnable: false,
+		}
+		checkSystem = true
 	case QueryStrategy_USE_IP4:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 			FakeEnable: false,
 		}
 	case QueryStrategy_USE_IP6:
-		ipOption = &dns.IPOption{
+		ipOption = dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
 		}
+	default:
+		return nil, errors.New("unexpected query strategy ", config.QueryStrategy)
 	}
 
-	hosts, err := NewStaticHosts(config.StaticHosts, config.Hosts)
+	hosts, err := NewStaticHosts(config.StaticHosts)
 	if err != nil {
-		return nil, newError("failed to create hosts").Base(err)
+		return nil, errors.New("failed to create hosts").Base(err)
 	}
 
-	clients := []*Client{}
+	var clients []*Client
 	domainRuleCount := 0
+
+	var defaultTag = config.Tag
+	if len(config.Tag) == 0 {
+		defaultTag = generateRandomTag()
+	}
+
 	for _, ns := range config.NameServer {
 		domainRuleCount += len(ns.PrioritizedDomain)
 	}
@@ -93,16 +99,6 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 	// MatcherInfos is ensured to cover the maximum index domainMatcher could return, where matcher's index starts from 1
 	matcherInfos := make([]*DomainMatcherInfo, domainRuleCount+1)
 	domainMatcher := &strmatcher.MatcherGroup{}
-	geoipContainer := router.GeoIPMatcherContainer{}
-
-	for _, endpoint := range config.NameServers {
-		features.PrintDeprecatedFeatureWarning("simple DNS server")
-		client, err := NewSimpleClient(ctx, endpoint, clientIP)
-		if err != nil {
-			return nil, newError("failed to create client").Base(err)
-		}
-		clients = append(clients, client)
-	}
 
 	for _, ns := range config.NameServer {
 		clientIdx := len(clients)
@@ -120,29 +116,40 @@ func New(ctx context.Context, config *Config) (*DNS, error) {
 		case net.IPv4len, net.IPv6len:
 			myClientIP = net.IP(ns.ClientIp)
 		}
-		client, err := NewClient(ctx, ns, myClientIP, geoipContainer, &matcherInfos, updateDomain)
+
+		disableCache := config.DisableCache || ns.DisableCache
+
+		var tag = defaultTag
+		if len(ns.Tag) > 0 {
+			tag = ns.Tag
+		}
+		clientIPOption := ResolveIpOptionOverride(ns.QueryStrategy, ipOption)
+		if !clientIPOption.IPv4Enable && !clientIPOption.IPv6Enable {
+			return nil, errors.New("no QueryStrategy available for ", ns.Address)
+		}
+
+		client, err := NewClient(ctx, ns, myClientIP, disableCache, tag, clientIPOption, &matcherInfos, updateDomain)
 		if err != nil {
-			return nil, newError("failed to create client").Base(err)
+			return nil, errors.New("failed to create client").Base(err)
 		}
 		clients = append(clients, client)
 	}
 
 	// If there is no DNS client in config, add a `localhost` DNS client
 	if len(clients) == 0 {
-		clients = append(clients, NewLocalDNSClient())
+		clients = append(clients, NewLocalDNSClient(ipOption))
 	}
 
 	return &DNS{
-		tag:                    tag,
 		hosts:                  hosts,
-		ipOption:               ipOption,
+		ipOption:               &ipOption,
 		clients:                clients,
 		ctx:                    ctx,
 		domainMatcher:          domainMatcher,
 		matcherInfos:           matcherInfos,
-		disableCache:           config.DisableCache,
 		disableFallback:        config.DisableFallback,
 		disableFallbackIfMatch: config.DisableFallbackIfMatch,
+		checkSystem:            checkSystem,
 	}, nil
 }
 
@@ -164,95 +171,101 @@ func (s *DNS) Close() error {
 // IsOwnLink implements proxy.dns.ownLinkVerifier
 func (s *DNS) IsOwnLink(ctx context.Context) bool {
 	inbound := session.InboundFromContext(ctx)
-	return inbound != nil && inbound.Tag == s.tag
+	if inbound == nil {
+		return false
+	}
+	for _, client := range s.clients {
+		if client.tag == inbound.Tag {
+			return true
+		}
+	}
+	return false
 }
 
 // LookupIP implements dns.Client.
-func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
+func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	// Normalize the FQDN form query
+	domain = strings.TrimSuffix(domain, ".")
 	if domain == "" {
-		return nil, newError("empty domain name")
+		return nil, 0, errors.New("empty domain name")
 	}
 
-	option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
-	option.IPv6Enable = option.IPv6Enable && s.ipOption.IPv6Enable
+	if s.checkSystem {
+		supportIPv4, supportIPv6 := checkSystemNetwork()
+		option.IPv4Enable = option.IPv4Enable && supportIPv4
+		option.IPv6Enable = option.IPv6Enable && supportIPv6
+	} else {
+		option.IPv4Enable = option.IPv4Enable && s.ipOption.IPv4Enable
+		option.IPv6Enable = option.IPv6Enable && s.ipOption.IPv6Enable
+	}
 
 	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns.ErrEmptyResponse
-	}
-
-	// Normalize the FQDN form query
-	if strings.HasSuffix(domain, ".") {
-		domain = domain[:len(domain)-1]
+		return nil, 0, dns.ErrEmptyResponse
 	}
 
 	// Static host lookup
-	switch addrs := s.hosts.Lookup(domain, option); {
+	switch addrs, err := s.hosts.Lookup(domain, option); {
+	case err != nil:
+		if go_errors.Is(err, dns.ErrEmptyResponse) {
+			return nil, 0, dns.ErrEmptyResponse
+		}
+		return nil, 0, errors.New("returning nil for domain ", domain).Base(err)
 	case addrs == nil: // Domain not recorded in static host
 		break
 	case len(addrs) == 0: // Domain recorded, but no valid IP returned (e.g. IPv4 address with only IPv6 enabled)
-		return nil, dns.ErrEmptyResponse
+		return nil, 0, dns.ErrEmptyResponse
 	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Domain replacement
-		newError("domain replaced: ", domain, " -> ", addrs[0].Domain()).WriteToLog()
+		errors.LogInfo(s.ctx, "domain replaced: ", domain, " -> ", addrs[0].Domain())
 		domain = addrs[0].Domain()
 	default: // Successfully found ip records in static host
-		newError("returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs).WriteToLog()
-		return toNetIP(addrs)
+		errors.LogInfo(s.ctx, "returning ", len(addrs), " IP(s) for domain ", domain, " -> ", addrs)
+		ips, err := toNetIP(addrs)
+		if err != nil {
+			return nil, 0, err
+		}
+		return ips, 10, nil // Hosts ttl is 10
 	}
 
 	// Name servers lookup
-	errs := []error{}
-	ctx := session.ContextWithInbound(s.ctx, &session.Inbound{Tag: s.tag})
+	var errs []error
 	for _, client := range s.sortClients(domain) {
 		if !option.FakeEnable && strings.EqualFold(client.Name(), "FakeDNS") {
-			newError("skip DNS resolution for domain ", domain, " at server ", client.Name()).AtDebug().WriteToLog()
+			errors.LogDebug(s.ctx, "skip DNS resolution for domain ", domain, " at server ", client.Name())
 			continue
 		}
-		ips, err := client.QueryIP(ctx, domain, option, s.disableCache)
+
+		ips, ttl, err := client.QueryIP(s.ctx, domain, option)
+
 		if len(ips) > 0 {
-			return ips, nil
+			if ttl == 0 {
+				ttl = 1
+			}
+			return ips, ttl, nil
 		}
-		if err != nil {
-			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
-			errs = append(errs, err)
+
+		errors.LogInfoInner(s.ctx, err, "failed to lookup ip for domain ", domain, " at server ", client.Name())
+		if err == nil {
+			err = dns.ErrEmptyResponse
 		}
-		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
-			return nil, err
+		errs = append(errs, err)
+
+		if client.IsFinalQuery() {
+			break
 		}
 	}
 
-	return nil, newError("returning nil for domain ", domain).Base(errors.Combine(errs...))
-}
-
-// LookupHosts implements dns.HostsLookup.
-func (s *DNS) LookupHosts(domain string) *net.Address {
-	domain = strings.TrimSuffix(domain, ".")
-	if domain == "" {
-		return nil
+	if len(errs) > 0 {
+		allErrs := errors.Combine(errs...)
+		err0 := errs[0]
+		if errors.AllEqual(err0, allErrs) {
+			if go_errors.Is(err0, dns.ErrEmptyResponse) {
+				return nil, 0, dns.ErrEmptyResponse
+			}
+			return nil, 0, errors.New("returning nil for domain ", domain).Base(err0)
+		}
+		return nil, 0, errors.New("returning nil for domain ", domain).Base(allErrs)
 	}
-	// Normalize the FQDN form query
-	addrs := s.hosts.Lookup(domain, *s.ipOption)
-	if len(addrs) > 0 {
-		newError("domain replaced: ", domain, " -> ", addrs[0].String()).AtInfo().WriteToLog()
-		return &addrs[0]
-	}
-
-	return nil
-}
-
-// GetIPOption implements ClientWithIPOption.
-func (s *DNS) GetIPOption() *dns.IPOption {
-	return s.ipOption
-}
-
-// SetQueryOption implements ClientWithIPOption.
-func (s *DNS) SetQueryOption(isIPv4Enable, isIPv6Enable bool) {
-	s.ipOption.IPv4Enable = isIPv4Enable
-	s.ipOption.IPv6Enable = isIPv6Enable
-}
-
-// SetFakeDNSOption implements ClientWithIPOption.
-func (s *DNS) SetFakeDNSOption(isFakeEnable bool) {
-	s.ipOption.FakeEnable = isFakeEnable
+	return nil, 0, dns.ErrEmptyResponse
 }
 
 func (s *DNS) sortClients(domain string) []*Client {
@@ -263,7 +276,11 @@ func (s *DNS) sortClients(domain string) []*Client {
 
 	// Priority domain matching
 	hasMatch := false
-	for _, match := range s.domainMatcher.Match(domain) {
+	MatchSlice := s.domainMatcher.Match(domain)
+	sort.Slice(MatchSlice, func(i, j int) bool {
+		return MatchSlice[i] < MatchSlice[j]
+	})
+	for _, match := range MatchSlice {
 		info := s.matcherInfos[match]
 		client := s.clients[info.clientIdx]
 		domainRule := client.domains[info.domainRuleIdx]
@@ -290,16 +307,16 @@ func (s *DNS) sortClients(domain string) []*Client {
 	}
 
 	if len(domainRules) > 0 {
-		newError("domain ", domain, " matches following rules: ", domainRules).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " matches following rules: ", domainRules)
 	}
 	if len(clientNames) > 0 {
-		newError("domain ", domain, " will use DNS in order: ", clientNames).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " will use DNS in order: ", clientNames)
 	}
 
 	if len(clients) == 0 {
 		clients = append(clients, s.clients[0])
 		clientNames = append(clientNames, s.clients[0].Name())
-		newError("domain ", domain, " will use the first DNS: ", clientNames).AtDebug().WriteToLog()
+		errors.LogDebug(s.ctx, "domain ", domain, " will use the first DNS: ", clientNames)
 	}
 
 	return clients
@@ -310,3 +327,22 @@ func init() {
 		return New(ctx, config.(*Config))
 	}))
 }
+
+func checkSystemNetwork() (supportIPv4 bool, supportIPv6 bool) {
+	conn4, err4 := net.Dial("udp4", "8.8.8.8:53")
+	if err4 != nil {
+		supportIPv4 = false
+	} else {
+		supportIPv4 = true
+		conn4.Close()
+	}
+
+	conn6, err6 := net.Dial("udp6", "[2001:4860:4860::8888]:53")
+	if err6 != nil {
+		supportIPv6 = false
+	} else {
+		supportIPv6 = true
+		conn6.Close()
+	}
+	return
+}

app/dns/dns_test.go

@@ -13,6 +13,7 @@ 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"
@@ -75,6 +76,9 @@ func (*staticHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeAAAA:
 			ans.MsgHdr.Rcode = dns.RcodeNameError
 
+		case q.Name == "notexist.google.com." && q.Qtype == dns.TypeA:
+			ans.MsgHdr.Rcode = dns.RcodeNameError
+
 		case q.Name == "hostname." && q.Qtype == dns.TypeA:
 			rr, _ := dns.NewRR("hostname. IN A 127.0.0.1")
 			ans.Answer = append(ans.Answer, rr)
@@ -116,22 +120,23 @@ func TestUDPServerSubnet(t *testing.T) {
 		Handler: &staticHandler{},
 		UDPSize: 1200,
 	}
-
 	go dnsServer.ListenAndServe()
 	time.Sleep(time.Second)
 
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 				ClientIp: []byte{7, 8, 9, 10},
@@ -152,7 +157,7 @@ func TestUDPServerSubnet(t *testing.T) {
 
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
-	ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+	ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
 		FakeEnable: false,
@@ -182,15 +187,17 @@ func TestUDPServer(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 			}),
@@ -211,7 +218,7 @@ func TestUDPServer(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -226,7 +233,7 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		ips, err := client.LookupIP("facebook.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("facebook.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -241,7 +248,7 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		_, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
+		_, _, err := client.LookupIP("notexist.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -255,12 +262,12 @@ func TestUDPServer(t *testing.T) {
 	}
 
 	{
-		ips, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv4only.google.com", feature_dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
 		})
-		if err != feature_dns.ErrEmptyResponse {
+		if !errors.AllEqual(feature_dns.ErrEmptyResponse, errors.Cause(err)) {
 			t.Fatal("error: ", err)
 		}
 		if len(ips) != 0 {
@@ -271,7 +278,7 @@ func TestUDPServer(t *testing.T) {
 	dnsServer.Shutdown()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -302,18 +309,18 @@ func TestPrioritizedDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
+							},
+							Port: 9999, /* unreachable */
+						},
+					},
 					{
 						Address: &net.Endpoint{
 							Network: net.Network_UDP,
@@ -352,7 +359,7 @@ func TestPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -388,15 +395,17 @@ func TestUDPServerIPv6(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 			}),
@@ -416,7 +425,7 @@ func TestUDPServerIPv6(t *testing.T) {
 
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 	{
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -447,15 +456,17 @@ func TestStaticHostDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
+				NameServer: []*NameServer{
 					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
 							},
+							Port: uint32(port),
 						},
-						Port: uint32(port),
 					},
 				},
 				StaticHosts: []*Config_HostMapping{
@@ -483,7 +494,7 @@ func TestStaticHostDomain(t *testing.T) {
 	client := v.GetFeature(feature_dns.ClientType()).(feature_dns.Client)
 
 	{
-		ips, err := client.LookupIP("example.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("example.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -528,7 +539,7 @@ func TestIPMatch(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{
 								CountryCode: "local",
 								Cidr: []*router.CIDR{
@@ -552,7 +563,7 @@ func TestIPMatch(t *testing.T) {
 							},
 							Port: uint32(port),
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{
 								CountryCode: "test",
 								Cidr: []*router.CIDR{
@@ -594,7 +605,7 @@ func TestIPMatch(t *testing.T) {
 	startTime := time.Now()
 
 	{
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -630,18 +641,18 @@ func TestLocalDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
+							},
+							Port: 9999, /* unreachable */
+						},
+					},
 					{
 						Address: &net.Endpoint{
 							Network: net.Network_UDP,
@@ -656,7 +667,7 @@ func TestLocalDomain(t *testing.T) {
 							// Equivalent of dotless:localhost
 							{Type: DomainMatchingType_Regex, Domain: "^[^.]*localhost[^.]*$"},
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{ // Will match localhost, localhost-a and localhost-b,
 								CountryCode: "local",
 								Cidr: []*router.CIDR{
@@ -717,7 +728,7 @@ func TestLocalDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{ // Will match dotless:
-		ips, err := client.LookupIP("hostname", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostname", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -732,7 +743,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match domain:local
-		ips, err := client.LookupIP("hostname.local", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostname.local", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -747,7 +758,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match static ip
-		ips, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostnamestatic", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -762,7 +773,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match domain replacing
-		ips, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("hostnamealias", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -776,8 +787,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, but not expectIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
-		ips, err := client.LookupIP("localhost", feature_dns.IPOption{
+	{ // Will match dotless:localhost, but not expectedIPs: 127.0.0.2, 127.0.0.3, then matches at dotless:
+		ips, _, err := client.LookupIP("localhost", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -791,8 +802,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-a", feature_dns.IPOption{
+	{ // Will match dotless:localhost, and expectedIPs: 127.0.0.2, 127.0.0.3
+		ips, _, err := client.LookupIP("localhost-a", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -806,8 +817,8 @@ func TestLocalDomain(t *testing.T) {
 		}
 	}
 
-	{ // Will match dotless:localhost, and expectIPs: 127.0.0.2, 127.0.0.3
-		ips, err := client.LookupIP("localhost-b", feature_dns.IPOption{
+	{ // Will match dotless:localhost, and expectedIPs: 127.0.0.2, 127.0.0.3
+		ips, _, err := client.LookupIP("localhost-b", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -822,7 +833,7 @@ func TestLocalDomain(t *testing.T) {
 	}
 
 	{ // Will match dotless:
-		ips, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("Mijia Cloud", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -858,18 +869,18 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	config := &core.Config{
 		App: []*serial.TypedMessage{
 			serial.ToTypedMessage(&Config{
-				NameServers: []*net.Endpoint{
-					{
-						Network: net.Network_UDP,
-						Address: &net.IPOrDomain{
-							Address: &net.IPOrDomain_Ip{
-								Ip: []byte{127, 0, 0, 1},
-							},
-						},
-						Port: 9999, /* unreachable */
-					},
-				},
 				NameServer: []*NameServer{
+					{
+						Address: &net.Endpoint{
+							Network: net.Network_UDP,
+							Address: &net.IPOrDomain{
+								Address: &net.IPOrDomain_Ip{
+									Ip: []byte{127, 0, 0, 1},
+								},
+							},
+							Port: 9999, /* unreachable */
+						},
+					},
 					{
 						Address: &net.Endpoint{
 							Network: net.Network_UDP,
@@ -886,7 +897,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 								Domain: "google.com",
 							},
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{ // Will only match 8.8.8.8 and 8.8.4.4
 								Cidr: []*router.CIDR{
 									{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
@@ -911,7 +922,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 								Domain: "google.com",
 							},
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{ // Will match 8.8.8.8 and 8.8.8.7, etc
 								Cidr: []*router.CIDR{
 									{Ip: []byte{8, 8, 8, 7}, Prefix: 24},
@@ -935,7 +946,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 								Domain: "api.google.com",
 							},
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{ // Will only match 8.8.7.7 (api.google.com)
 								Cidr: []*router.CIDR{
 									{Ip: []byte{8, 8, 7, 7}, Prefix: 32},
@@ -959,7 +970,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 								Domain: "v2.api.google.com",
 							},
 						},
-						Geoip: []*router.GeoIP{
+						ExpectedGeoip: []*router.GeoIP{
 							{ // Will only match 8.8.7.8 (v2.api.google.com)
 								Cidr: []*router.CIDR{
 									{Ip: []byte{8, 8, 7, 8}, Prefix: 32},
@@ -988,7 +999,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	startTime := time.Now()
 
 	{ // Will match server 1,2 and server 1 returns expected ip
-		ips, err := client.LookupIP("google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -1003,7 +1014,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 1,2 and server 1 returns unexpected ip, then server 2 returns expected one
-		ips, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("ipv6.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 			FakeEnable: false,
@@ -1018,7 +1029,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 3,1,2 and server 3 returns expected one
-		ips, err := client.LookupIP("api.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("api.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,
@@ -1033,7 +1044,7 @@ func TestMultiMatchPrioritizedDomain(t *testing.T) {
 	}
 
 	{ // Will match server 4,3,1,2 and server 4 returns expected one
-		ips, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
+		ips, _, err := client.LookupIP("v2.api.google.com", feature_dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 			FakeEnable: false,

app/dns/dnscommon.go

@@ -31,30 +31,34 @@ type record struct {
 
 // IPRecord is a cacheable item for a resolved domain
 type IPRecord struct {
-	ReqID  uint16
-	IP     []net.Address
-	Expire time.Time
-	RCode  dnsmessage.RCode
+	ReqID     uint16
+	IP        []net.IP
+	Expire    time.Time
+	RCode     dnsmessage.RCode
+	RawHeader *dnsmessage.Header
 }
 
-func (r *IPRecord) getIPs() ([]net.Address, error) {
-	if r == nil || r.Expire.Before(time.Now()) {
-		return nil, errRecordNotFound
+func (r *IPRecord) getIPs() ([]net.IP, uint32, error) {
+	if r == nil {
+		return nil, 0, errRecordNotFound
+	}
+	untilExpire := time.Until(r.Expire).Seconds()
+	if untilExpire <= 0 {
+		return nil, 0, errRecordNotFound
+	}
+
+	ttl := uint32(untilExpire) + 1
+	if ttl == 1 {
+		r.Expire = time.Now().Add(time.Second) // To ensure that two consecutive requests get the same result
 	}
 	if r.RCode != dnsmessage.RCodeSuccess {
-		return nil, dns_feature.RCodeError(r.RCode)
+		return nil, ttl, dns_feature.RCodeError(r.RCode)
+	}
+	if len(r.IP) == 0 {
+		return nil, ttl, dns_feature.ErrEmptyResponse
 	}
-	return r.IP, nil
-}
 
-func isNewer(baseRec *IPRecord, newRec *IPRecord) bool {
-	if newRec == nil {
-		return false
-	}
-	if baseRec == nil {
-		return true
-	}
-	return baseRec.Expire.Before(newRec.Expire)
+	return r.IP, ttl, nil
 }
 
 var errRecordNotFound = errors.New("record not found")
@@ -67,49 +71,59 @@ type dnsRequest struct {
 	msg     *dnsmessage.Message
 }
 
-func genEDNS0Options(clientIP net.IP) *dnsmessage.Resource {
-	if len(clientIP) == 0 {
+func genEDNS0Options(clientIP net.IP, padding int) *dnsmessage.Resource {
+	if len(clientIP) == 0 && padding == 0 {
 		return nil
 	}
 
-	var netmask int
-	var family uint16
-
-	if len(clientIP) == 4 {
-		family = 1
-		netmask = 24 // 24 for IPV4, 96 for IPv6
-	} else {
-		family = 2
-		netmask = 96
-	}
-
-	b := make([]byte, 4)
-	binary.BigEndian.PutUint16(b[0:], family)
-	b[2] = byte(netmask)
-	b[3] = 0
-	switch family {
-	case 1:
-		ip := clientIP.To4().Mask(net.CIDRMask(netmask, net.IPv4len*8))
-		needLength := (netmask + 8 - 1) / 8 // division rounding up
-		b = append(b, ip[:needLength]...)
-	case 2:
-		ip := clientIP.Mask(net.CIDRMask(netmask, net.IPv6len*8))
-		needLength := (netmask + 8 - 1) / 8 // division rounding up
-		b = append(b, ip[:needLength]...)
-	}
-
-	const EDNS0SUBNET = 0x08
+	const EDNS0SUBNET = 0x8
+	const EDNS0PADDING = 0xc
 
 	opt := new(dnsmessage.Resource)
 	common.Must(opt.Header.SetEDNS0(1350, 0xfe00, true))
+	body := dnsmessage.OPTResource{}
+	opt.Body = &body
 
-	opt.Body = &dnsmessage.OPTResource{
-		Options: []dnsmessage.Option{
-			{
+	if len(clientIP) != 0 {
+		var netmask int
+		var family uint16
+
+		if len(clientIP) == 4 {
+			family = 1
+			netmask = 24 // 24 for IPV4, 96 for IPv6
+		} else {
+			family = 2
+			netmask = 96
+		}
+
+		b := make([]byte, 4)
+		binary.BigEndian.PutUint16(b[0:], family)
+		b[2] = byte(netmask)
+		b[3] = 0
+		switch family {
+		case 1:
+			ip := clientIP.To4().Mask(net.CIDRMask(netmask, net.IPv4len*8))
+			needLength := (netmask + 8 - 1) / 8 // division rounding up
+			b = append(b, ip[:needLength]...)
+		case 2:
+			ip := clientIP.Mask(net.CIDRMask(netmask, net.IPv6len*8))
+			needLength := (netmask + 8 - 1) / 8 // division rounding up
+			b = append(b, ip[:needLength]...)
+		}
+
+		body.Options = append(body.Options,
+			dnsmessage.Option{
 				Code: EDNS0SUBNET,
 				Data: b,
-			},
-		},
+			})
+	}
+
+	if padding != 0 {
+		body.Options = append(body.Options,
+			dnsmessage.Option{
+				Code: EDNS0PADDING,
+				Data: make([]byte, padding),
+			})
 	}
 
 	return opt
@@ -171,17 +185,18 @@ func parseResponse(payload []byte) (*IPRecord, error) {
 	var parser dnsmessage.Parser
 	h, err := parser.Start(payload)
 	if err != nil {
-		return nil, newError("failed to parse DNS response").Base(err).AtWarning()
+		return nil, errors.New("failed to parse DNS response").Base(err).AtWarning()
 	}
 	if err := parser.SkipAllQuestions(); err != nil {
-		return nil, newError("failed to skip questions in DNS response").Base(err).AtWarning()
+		return nil, errors.New("failed to skip questions in DNS response").Base(err).AtWarning()
 	}
 
 	now := time.Now()
 	ipRecord := &IPRecord{
-		ReqID:  h.ID,
-		RCode:  h.RCode,
-		Expire: now.Add(time.Second * 600),
+		ReqID:     h.ID,
+		RCode:     h.RCode,
+		Expire:    now.Add(time.Second * dns_feature.DefaultTTL),
+		RawHeader: &h,
 	}
 
 L:
@@ -189,14 +204,14 @@ L:
 		ah, err := parser.AnswerHeader()
 		if err != nil {
 			if err != dnsmessage.ErrSectionDone {
-				newError("failed to parse answer section for domain: ", ah.Name.String()).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse answer section for domain: ", ah.Name.String())
 			}
 			break
 		}
 
 		ttl := ah.TTL
 		if ttl == 0 {
-			ttl = 600
+			ttl = 1
 		}
 		expire := now.Add(time.Duration(ttl) * time.Second)
 		if ipRecord.Expire.After(expire) {
@@ -207,20 +222,23 @@ L:
 		case dnsmessage.TypeA:
 			ans, err := parser.AResource()
 			if err != nil {
-				newError("failed to parse A record for domain: ", ah.Name).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse A record for domain: ", ah.Name)
 				break L
 			}
-			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.A[:]))
+			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.A[:]).IP())
 		case dnsmessage.TypeAAAA:
 			ans, err := parser.AAAAResource()
 			if err != nil {
-				newError("failed to parse AAAA record for domain: ", ah.Name).Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to parse AAAA record for domain: ", ah.Name)
 				break L
 			}
-			ipRecord.IP = append(ipRecord.IP, net.IPAddress(ans.AAAA[:]))
+			newIP := net.IPAddress(ans.AAAA[:]).IP()
+			if len(newIP) == net.IPv6len {
+				ipRecord.IP = append(ipRecord.IP, newIP)
+			}
 		default:
 			if err := parser.SkipAnswer(); err != nil {
-				newError("failed to skip answer").Base(err).WriteToLog()
+				errors.LogInfoInner(context.Background(), err, "failed to skip answer")
 				break L
 			}
 			continue

app/dns/dnscommon_test.go

@@ -18,31 +18,31 @@ func Test_parseResponse(t *testing.T) {
 
 	ans := new(dns.Msg)
 	ans.Id = 0
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	p = append(p, []byte{})
 
 	ans = new(dns.Msg)
 	ans.Id = 1
 	ans.Answer = append(ans.Answer,
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN A 8.8.8.8")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN A 8.8.4.4")).(dns.RR),
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")),
+		common.Must2(dns.NewRR("google.com. IN A 8.8.8.8")),
+		common.Must2(dns.NewRR("google.com. IN A 8.8.4.4")),
 	)
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	ans = new(dns.Msg)
 	ans.Id = 2
 	ans.Answer = append(ans.Answer,
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN CNAME test.google.com")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8888")).(dns.RR),
-		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8844")).(dns.RR),
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME fake.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME m.test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN CNAME test.google.com")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8888")),
+		common.Must2(dns.NewRR("google.com. IN AAAA 2001::123:8844")),
 	)
-	p = append(p, common.Must2(ans.Pack()).([]byte))
+	p = append(p, common.Must2(ans.Pack()))
 
 	tests := []struct {
 		name    string
@@ -51,7 +51,7 @@ func Test_parseResponse(t *testing.T) {
 	}{
 		{
 			"empty",
-			&IPRecord{0, []net.Address(nil), time.Time{}, dnsmessage.RCodeSuccess},
+			&IPRecord{0, []net.IP(nil), time.Time{}, dnsmessage.RCodeSuccess, nil},
 			false,
 		},
 		{
@@ -63,15 +63,16 @@ func Test_parseResponse(t *testing.T) {
 			"a record",
 			&IPRecord{
 				1,
-				[]net.Address{net.ParseAddress("8.8.8.8"), net.ParseAddress("8.8.4.4")},
+				[]net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")},
 				time.Time{},
 				dnsmessage.RCodeSuccess,
+				nil,
 			},
 			false,
 		},
 		{
 			"aaaa record",
-			&IPRecord{2, []net.Address{net.ParseAddress("2001::123:8888"), net.ParseAddress("2001::123:8844")}, time.Time{}, dnsmessage.RCodeSuccess},
+			&IPRecord{2, []net.IP{net.ParseIP("2001::123:8888"), net.ParseIP("2001::123:8844")}, time.Time{}, dnsmessage.RCodeSuccess, nil},
 			false,
 		},
 	}
@@ -84,11 +85,12 @@ func Test_parseResponse(t *testing.T) {
 			}
 
 			if got != nil {
-				// reset the time
+				// reset the time and RawHeader
 				got.Expire = time.Time{}
+				got.RawHeader = nil
 			}
 			if cmp.Diff(got, tt.want) != "" {
-				t.Errorf(cmp.Diff(got, tt.want))
+				t.Error(cmp.Diff(got, tt.want))
 				// t.Errorf("handleResponse() = %#v, want %#v", got, tt.want)
 			}
 		})
@@ -154,7 +156,7 @@ func Test_genEDNS0Options(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			if got := genEDNS0Options(tt.args.clientIP); got == nil {
+			if got := genEDNS0Options(tt.args.clientIP, 0); got == nil {
 				t.Errorf("genEDNS0Options() = %v, want %v", got, tt.want)
 			}
 		})

app/dns/errors.generated.go

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

app/dns/fakedns/errors.generated.go

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

app/dns/fakedns/fake.go

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

app/dns/fakedns/fakedns.go

@@ -1,3 +1 @@
 package fakedns
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/dns/fakedns/fakedns.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/dns/fakedns/fakedns.proto
 
 package fakedns
@@ -31,11 +31,9 @@ type FakeDnsPool struct {
 
 func (x *FakeDnsPool) Reset() {
 	*x = FakeDnsPool{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *FakeDnsPool) String() string {
@@ -46,7 +44,7 @@ func (*FakeDnsPool) ProtoMessage() {}
 
 func (x *FakeDnsPool) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -85,11 +83,9 @@ type FakeDnsPoolMulti struct {
 
 func (x *FakeDnsPoolMulti) Reset() {
 	*x = FakeDnsPoolMulti{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *FakeDnsPoolMulti) String() string {
@@ -100,7 +96,7 @@ func (*FakeDnsPoolMulti) ProtoMessage() {}
 
 func (x *FakeDnsPoolMulti) ProtoReflect() protoreflect.Message {
 	mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -159,7 +155,7 @@ func file_app_dns_fakedns_fakedns_proto_rawDescGZIP() []byte {
 }
 
 var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_app_dns_fakedns_fakedns_proto_goTypes = []interface{}{
+var file_app_dns_fakedns_fakedns_proto_goTypes = []any{
 	(*FakeDnsPool)(nil),      // 0: xray.app.dns.fakedns.FakeDnsPool
 	(*FakeDnsPoolMulti)(nil), // 1: xray.app.dns.fakedns.FakeDnsPoolMulti
 }
@@ -177,32 +173,6 @@ func file_app_dns_fakedns_fakedns_proto_init() {
 	if File_app_dns_fakedns_fakedns_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_dns_fakedns_fakedns_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPool); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_dns_fakedns_fakedns_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*FakeDnsPoolMulti); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{

app/dns/hosts.go

@@ -1,10 +1,12 @@
 package dns
 
 import (
-	"github.com/xtls/xray-core/common"
+	"context"
+	"strconv"
+
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
-	"github.com/xtls/xray-core/features"
 	"github.com/xtls/xray-core/features/dns"
 )
 
@@ -15,50 +17,39 @@ type StaticHosts struct {
 }
 
 // NewStaticHosts creates a new StaticHosts instance.
-func NewStaticHosts(hosts []*Config_HostMapping, legacy map[string]*net.IPOrDomain) (*StaticHosts, error) {
+func NewStaticHosts(hosts []*Config_HostMapping) (*StaticHosts, error) {
 	g := new(strmatcher.MatcherGroup)
 	sh := &StaticHosts{
-		ips:      make([][]net.Address, len(hosts)+len(legacy)+16),
+		ips:      make([][]net.Address, len(hosts)+16),
 		matchers: g,
 	}
 
-	if legacy != nil {
-		features.PrintDeprecatedFeatureWarning("simple host mapping")
-
-		for domain, ip := range legacy {
-			matcher, err := strmatcher.Full.New(domain)
-			common.Must(err)
-			id := g.Add(matcher)
-
-			address := ip.AsAddress()
-			if address.Family().IsDomain() {
-				return nil, newError("invalid domain address in static hosts: ", address.Domain()).AtWarning()
-			}
-
-			sh.ips[id] = []net.Address{address}
-		}
-	}
-
 	for _, mapping := range hosts {
 		matcher, err := toStrMatcher(mapping.Type, mapping.Domain)
 		if err != nil {
-			return nil, newError("failed to create domain matcher").Base(err)
+			return nil, errors.New("failed to create domain matcher").Base(err)
 		}
 		id := g.Add(matcher)
 		ips := make([]net.Address, 0, len(mapping.Ip)+1)
 		switch {
 		case len(mapping.ProxiedDomain) > 0:
-			ips = append(ips, net.DomainAddress(mapping.ProxiedDomain))
+			if mapping.ProxiedDomain[0] == '#' {
+				rcode, err := strconv.Atoi(mapping.ProxiedDomain[1:])
+				if err != nil {
+					return nil, err
+				}
+				ips = append(ips, dns.RCodeError(rcode))
+			} else {
+				ips = append(ips, net.DomainAddress(mapping.ProxiedDomain))
+			}
 		case len(mapping.Ip) > 0:
 			for _, ip := range mapping.Ip {
 				addr := net.IPAddress(ip)
 				if addr == nil {
-					return nil, newError("invalid IP address in static hosts: ", ip).AtWarning()
+					return nil, errors.New("invalid IP address in static hosts: ", ip).AtWarning()
 				}
 				ips = append(ips, addr)
 			}
-		default:
-			return nil, newError("neither IP address nor proxied domain specified for domain: ", mapping.Domain).AtWarning()
 		}
 
 		sh.ips[id] = ips
@@ -77,33 +68,51 @@ func filterIP(ips []net.Address, option dns.IPOption) []net.Address {
 	return filtered
 }
 
-func (h *StaticHosts) lookupInternal(domain string) []net.Address {
-	var ips []net.Address
+func (h *StaticHosts) lookupInternal(domain string) ([]net.Address, error) {
+	ips := make([]net.Address, 0)
+	found := false
 	for _, id := range h.matchers.Match(domain) {
-		ips = append(ips, h.ips[id]...)
-	}
-	return ips
-}
-
-func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) []net.Address {
-	switch addrs := h.lookupInternal(domain); {
-	case len(addrs) == 0: // Not recorded in static hosts, return nil
-		return nil
-	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Try to unwrap domain
-		newError("found replaced domain: ", domain, " -> ", addrs[0].Domain(), ". Try to unwrap it").AtDebug().WriteToLog()
-		if maxDepth > 0 {
-			unwrapped := h.lookup(addrs[0].Domain(), option, maxDepth-1)
-			if unwrapped != nil {
-				return unwrapped
+		for _, v := range h.ips[id] {
+			if err, ok := v.(dns.RCodeError); ok {
+				if uint16(err) == 0 {
+					return nil, dns.ErrEmptyResponse
+				}
+				return nil, err
 			}
 		}
-		return addrs
+		ips = append(ips, h.ips[id]...)
+		found = true
+	}
+	if !found {
+		return nil, nil
+	}
+	return ips, nil
+}
+
+func (h *StaticHosts) lookup(domain string, option dns.IPOption, maxDepth int) ([]net.Address, error) {
+	switch addrs, err := h.lookupInternal(domain); {
+	case err != nil:
+		return nil, err
+	case len(addrs) == 0: // Not recorded in static hosts, return nil
+		return addrs, nil
+	case len(addrs) == 1 && addrs[0].Family().IsDomain(): // Try to unwrap domain
+		errors.LogDebug(context.Background(), "found replaced domain: ", domain, " -> ", addrs[0].Domain(), ". Try to unwrap it")
+		if maxDepth > 0 {
+			unwrapped, err := h.lookup(addrs[0].Domain(), option, maxDepth-1)
+			if err != nil {
+				return nil, err
+			}
+			if unwrapped != nil {
+				return unwrapped, nil
+			}
+		}
+		return addrs, nil
 	default: // IP record found, return a non-nil IP array
-		return filterIP(addrs, option)
+		return filterIP(addrs, option), nil
 	}
 }
 
 // Lookup returns IP addresses or proxied domain for the given domain, if exists in this StaticHosts.
-func (h *StaticHosts) Lookup(domain string, option dns.IPOption) []net.Address {
+func (h *StaticHosts) Lookup(domain string, option dns.IPOption) ([]net.Address, error) {
 	return h.lookup(domain, option, 5)
 }

app/dns/hosts_test.go

@@ -12,6 +12,11 @@ import (
 
 func TestStaticHosts(t *testing.T) {
 	pb := []*Config_HostMapping{
+		{
+			Type:          DomainMatchingType_Subdomain,
+			Domain:        "lan",
+			ProxiedDomain: "#3",
+		},
 		{
 			Type:   DomainMatchingType_Full,
 			Domain: "example.com",
@@ -50,11 +55,18 @@ func TestStaticHosts(t *testing.T) {
 		},
 	}
 
-	hosts, err := NewStaticHosts(pb, nil)
+	hosts, err := NewStaticHosts(pb)
 	common.Must(err)
 
 	{
-		ips := hosts.Lookup("example.com", dns.IPOption{
+		_, err := hosts.Lookup("example.com.lan", dns.IPOption{})
+		if dns.RCodeFromError(err) != 3 {
+			t.Error(err)
+		}
+	}
+
+	{
+		ips, _ := hosts.Lookup("example.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -67,7 +79,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		domain := hosts.Lookup("proxy.xray.com", dns.IPOption{
+		domain, _ := hosts.Lookup("proxy.xray.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 		})
@@ -80,7 +92,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		domain := hosts.Lookup("proxy2.xray.com", dns.IPOption{
+		domain, _ := hosts.Lookup("proxy2.xray.com", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: false,
 		})
@@ -93,7 +105,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		ips := hosts.Lookup("www.example.cn", dns.IPOption{
+		ips, _ := hosts.Lookup("www.example.cn", dns.IPOption{
 			IPv4Enable: true,
 			IPv6Enable: true,
 		})
@@ -106,7 +118,7 @@ func TestStaticHosts(t *testing.T) {
 	}
 
 	{
-		ips := hosts.Lookup("baidu.com", dns.IPOption{
+		ips, _ := hosts.Lookup("baidu.com", dns.IPOption{
 			IPv4Enable: false,
 			IPv6Enable: true,
 		})

app/dns/nameserver.go

@@ -9,6 +9,7 @@ import (
 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
@@ -20,22 +21,27 @@ type Server interface {
 	// Name of the Client.
 	Name() string
 	// QueryIP sends IP queries to its configured server.
-	QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns.IPOption, disableCache bool) ([]net.IP, error)
+	QueryIP(ctx context.Context, domain string, option dns.IPOption) ([]net.IP, uint32, error)
 }
 
 // Client is the interface for DNS client.
 type Client struct {
-	server       Server
-	clientIP     net.IP
-	skipFallback bool
-	domains      []string
-	expectIPs    []*router.GeoIPMatcher
+	server        Server
+	skipFallback  bool
+	domains       []string
+	expectedIPs   []*router.GeoIPMatcher
+	unexpectedIPs []*router.GeoIPMatcher
+	actPrior      bool
+	actUnprior    bool
+	tag           string
+	timeoutMs     time.Duration
+	finalQuery    bool
+	ipOption      *dns.IPOption
+	checkSystem   bool
 }
 
-var errExpectedIPNonMatch = errors.New("expectIPs not match")
-
 // NewServer creates a name server object according to the network destination url.
-func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, error) {
+func NewServer(ctx context.Context, dest net.Destination, dispatcher routing.Dispatcher, disableCache bool, clientIP net.IP) (Server, error) {
 	if address := dest.Address; address.Family().IsDomain() {
 		u, err := url.Parse(address.Domain())
 		if err != nil {
@@ -44,46 +50,66 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, err
 		switch {
 		case strings.EqualFold(u.String(), "localhost"):
 			return NewLocalNameServer(), nil
-		case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
-			return NewDoHNameServer(u, dispatcher)
-		case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
-			return NewDoHLocalNameServer(u), nil
+		case strings.EqualFold(u.Scheme, "https"): // DNS-over-HTTPS Remote mode
+			return NewDoHNameServer(u, dispatcher, false, disableCache, clientIP), nil
+		case strings.EqualFold(u.Scheme, "h2c"): // DNS-over-HTTPS h2c Remote mode
+			return NewDoHNameServer(u, dispatcher, true, disableCache, clientIP), nil
+		case strings.EqualFold(u.Scheme, "https+local"): // DNS-over-HTTPS Local mode
+			return NewDoHNameServer(u, nil, false, disableCache, clientIP), nil
+		case strings.EqualFold(u.Scheme, "h2c+local"): // DNS-over-HTTPS h2c Local mode
+			return NewDoHNameServer(u, nil, true, disableCache, clientIP), nil
 		case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
-			return NewQUICNameServer(u)
+			return NewQUICNameServer(u, disableCache, clientIP)
 		case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
-			return NewTCPNameServer(u, dispatcher)
+			return NewTCPNameServer(u, dispatcher, disableCache, clientIP)
 		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
-			return NewTCPLocalNameServer(u)
+			return NewTCPLocalNameServer(u, disableCache, clientIP)
 		case strings.EqualFold(u.String(), "fakedns"):
-			return NewFakeDNSServer(), nil
+			var fd dns.FakeDNSEngine
+			err = core.RequireFeatures(ctx, func(fdns dns.FakeDNSEngine) {
+				fd = fdns
+			})
+			if err != nil {
+				return nil, err
+			}
+			return NewFakeDNSServer(fd), nil
 		}
 	}
 	if dest.Network == net.Network_Unknown {
 		dest.Network = net.Network_UDP
 	}
 	if dest.Network == net.Network_UDP { // UDP classic DNS mode
-		return NewClassicNameServer(dest, dispatcher), nil
+		return NewClassicNameServer(dest, dispatcher, disableCache, clientIP), nil
 	}
-	return nil, newError("No available name server could be created from ", dest).AtWarning()
+	return nil, errors.New("No available name server could be created from ", dest).AtWarning()
 }
 
 // NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
-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,
+	disableCache bool,
+	tag string,
+	ipOption dns.IPOption,
+	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)
+		server, err := NewServer(ctx, ns.Address.AsDestination(), dispatcher, disableCache, clientIP)
 		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
+			return errors.New("failed to create nameserver").Base(err).AtWarning()
 		}
 
-		// Priotize local domains with specific TLDs or without any dot to local DNS
+		// Prioritize local domains with specific TLDs or those without any dot for the local DNS
 		if _, isLocalDNS := server.(*LocalNameServer); isLocalDNS {
 			ns.PrioritizedDomain = append(ns.PrioritizedDomain, localTLDsAndDotlessDomains...)
 			ns.OriginalRules = append(ns.OriginalRules, localTLDsAndDotlessDomainsRule)
 			// The following lines is a solution to avoid core panics（rule index out of range） when setting `localhost` DNS client in config.
-			// Because the `localhost` DNS client will apend len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
+			// Because the `localhost` DNS client will append len(localTLDsAndDotlessDomains) rules into matcherInfos to match `geosite:private` default rule.
 			// But `matcherInfos` has no enough length to add rules, which leads to core panics (rule index out of range).
 			// To avoid this, the length of `matcherInfos` must be equal to the expected, so manually append it with Golang default zero value first for later modification.
 			// Related issues:
@@ -104,7 +130,7 @@ func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container r
 		for _, domain := range ns.PrioritizedDomain {
 			domainRule, err := toStrMatcher(domain.Type, domain.Domain)
 			if err != nil {
-				return newError("failed to create prioritized domain").Base(err).AtWarning()
+				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
 			}
 			originalRuleIdx := ruleCurr
 			if ruleCurr < len(ns.OriginalRules) {
@@ -123,98 +149,154 @@ func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container r
 			}
 			err = updateDomainRule(domainRule, originalRuleIdx, *matcherInfos)
 			if err != nil {
-				return newError("failed to create prioritized domain").Base(err).AtWarning()
+				return errors.New("failed to create prioritized domain").Base(err).AtWarning()
 			}
 		}
 
 		// Establish expected IPs
-		var matchers []*router.GeoIPMatcher
-		for _, geoip := range ns.Geoip {
-			matcher, err := container.Add(geoip)
+		var expectedMatchers []*router.GeoIPMatcher
+		for _, geoip := range ns.ExpectedGeoip {
+			matcher, err := router.GlobalGeoIPContainer.Add(geoip)
 			if err != nil {
-				return newError("failed to create ip matcher").Base(err).AtWarning()
+				return errors.New("failed to create expected ip matcher").Base(err).AtWarning()
 			}
-			matchers = append(matchers, matcher)
+			expectedMatchers = append(expectedMatchers, matcher)
+		}
+
+		// Establish unexpected IPs
+		var unexpectedMatchers []*router.GeoIPMatcher
+		for _, geoip := range ns.UnexpectedGeoip {
+			matcher, err := router.GlobalGeoIPContainer.Add(geoip)
+			if err != nil {
+				return errors.New("failed to create unexpected ip matcher").Base(err).AtWarning()
+			}
+			unexpectedMatchers = append(unexpectedMatchers, matcher)
 		}
 
 		if len(clientIP) > 0 {
 			switch ns.Address.Address.GetAddress().(type) {
 			case *net.IPOrDomain_Domain:
-				newError("DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+				errors.LogInfo(ctx, "DNS: client ", ns.Address.Address.GetDomain(), " uses clientIP ", clientIP.String())
 			case *net.IPOrDomain_Ip:
-				newError("DNS: client ", ns.Address.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
+				errors.LogInfo(ctx, "DNS: client ", net.IP(ns.Address.Address.GetIp()), " uses clientIP ", clientIP.String())
 			}
 		}
 
+		var timeoutMs = 4000 * time.Millisecond
+		if ns.TimeoutMs > 0 {
+			timeoutMs = time.Duration(ns.TimeoutMs) * time.Millisecond
+		}
+
+		checkSystem := ns.QueryStrategy == QueryStrategy_USE_SYS
+
 		client.server = server
-		client.clientIP = clientIP
 		client.skipFallback = ns.SkipFallback
 		client.domains = rules
-		client.expectIPs = matchers
+		client.expectedIPs = expectedMatchers
+		client.unexpectedIPs = unexpectedMatchers
+		client.actPrior = ns.ActPrior
+		client.actUnprior = ns.ActUnprior
+		client.tag = tag
+		client.timeoutMs = timeoutMs
+		client.finalQuery = ns.FinalQuery
+		client.ipOption = &ipOption
+		client.checkSystem = checkSystem
 		return nil
 	})
 	return client, err
 }
 
-// NewSimpleClient creates a DNS client with a simple destination.
-func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
-	client := &Client{}
-	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
-		server, err := NewServer(endpoint.AsDestination(), dispatcher)
-		if err != nil {
-			return newError("failed to create nameserver").Base(err).AtWarning()
-		}
-		client.server = server
-		client.clientIP = clientIP
-		return nil
-	})
-
-	if len(clientIP) > 0 {
-		switch endpoint.Address.GetAddress().(type) {
-		case *net.IPOrDomain_Domain:
-			newError("DNS: client ", endpoint.Address.GetDomain(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
-		case *net.IPOrDomain_Ip:
-			newError("DNS: client ", endpoint.Address.GetIp(), " uses clientIP ", clientIP.String()).AtInfo().WriteToLog()
-		}
-	}
-
-	return client, err
-}
-
 // Name returns the server name the client manages.
 func (c *Client) Name() string {
 	return c.server.Name()
 }
 
+func (c *Client) IsFinalQuery() bool {
+	return c.finalQuery
+}
+
 // QueryIP sends 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)
+func (c *Client) QueryIP(ctx context.Context, domain string, option dns.IPOption) ([]net.IP, uint32, error) {
+	if c.checkSystem {
+		supportIPv4, supportIPv6 := checkSystemNetwork()
+		option.IPv4Enable = option.IPv4Enable && supportIPv4
+		option.IPv6Enable = option.IPv6Enable && supportIPv6
+	} else {
+		option.IPv4Enable = option.IPv4Enable && c.ipOption.IPv4Enable
+		option.IPv6Enable = option.IPv6Enable && c.ipOption.IPv6Enable
+	}
+
+	if !option.IPv4Enable && !option.IPv6Enable {
+		return nil, 0, dns.ErrEmptyResponse
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, c.timeoutMs)
+	ctx = session.ContextWithInbound(ctx, &session.Inbound{Tag: c.tag})
+	ips, ttl, err := c.server.QueryIP(ctx, domain, option)
 	cancel()
 
 	if err != nil {
-		return ips, err
+		return nil, 0, err
 	}
-	return c.MatchExpectedIPs(domain, ips)
-}
 
-// MatchExpectedIPs matches queried domain IPs with expected IPs and returns matched ones.
-func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error) {
-	if len(c.expectIPs) == 0 {
-		return ips, nil
+	if len(ips) == 0 {
+		return nil, 0, dns.ErrEmptyResponse
 	}
-	newIps := []net.IP{}
-	for _, ip := range ips {
-		for _, matcher := range c.expectIPs {
-			if matcher.Match(ip) {
-				newIps = append(newIps, ip)
-				break
-			}
+
+	if len(c.expectedIPs) > 0 && !c.actPrior {
+		ips = router.MatchIPs(c.expectedIPs, ips, false)
+		errors.LogDebug(context.Background(), "domain ", domain, " expectedIPs ", ips, " matched at server ", c.Name())
+		if len(ips) == 0 {
+			return nil, 0, dns.ErrEmptyResponse
 		}
 	}
-	if len(newIps) == 0 {
-		return nil, errExpectedIPNonMatch
+
+	if len(c.unexpectedIPs) > 0 && !c.actUnprior {
+		ips = router.MatchIPs(c.unexpectedIPs, ips, true)
+		errors.LogDebug(context.Background(), "domain ", domain, " unexpectedIPs ", ips, " matched at server ", c.Name())
+		if len(ips) == 0 {
+			return nil, 0, dns.ErrEmptyResponse
+		}
+	}
+
+	if len(c.expectedIPs) > 0 && c.actPrior {
+		ipsNew := router.MatchIPs(c.expectedIPs, ips, false)
+		if len(ipsNew) > 0 {
+			ips = ipsNew
+			errors.LogDebug(context.Background(), "domain ", domain, " priorIPs ", ips, " matched at server ", c.Name())
+		}
+	}
+
+	if len(c.unexpectedIPs) > 0 && c.actUnprior {
+		ipsNew := router.MatchIPs(c.unexpectedIPs, ips, true)
+		if len(ipsNew) > 0 {
+			ips = ipsNew
+			errors.LogDebug(context.Background(), "domain ", domain, " unpriorIPs ", ips, " matched at server ", c.Name())
+		}
+	}
+
+	return ips, ttl, nil
+}
+
+func ResolveIpOptionOverride(queryStrategy QueryStrategy, ipOption dns.IPOption) dns.IPOption {
+	switch queryStrategy {
+	case QueryStrategy_USE_IP:
+		return ipOption
+	case QueryStrategy_USE_SYS:
+		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
 	}
-	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
-	return newIps, nil
 }

app/dns/nameserver_doh.go

@@ -3,234 +3,136 @@ package dns
 import (
 	"bytes"
 	"context"
+	"crypto/tls"
+	go_errors "errors"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
-	"sync"
-	"sync/atomic"
+	"strings"
 	"time"
 
+	utls "github.com/refraction-networking/utls"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/crypto"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet"
-	"golang.org/x/net/dns/dnsmessage"
+	"golang.org/x/net/http2"
 )
 
 // DoHNameServer implemented DNS over HTTPS (RFC8484) Wire Format,
 // which is compatible with traditional dns over udp(RFC1035),
 // thus most of the DOH implementation is copied from udpns.go
 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
+	cacheController *CacheController
+	httpClient      *http.Client
+	dohURL          string
+	clientIP        net.IP
 }
 
-// NewDoHNameServer creates DOH server object for remote resolving.
-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")
-
-	s.dispatcher = dispatcher
-	tr := &http.Transport{
-		MaxIdleConns:        30,
-		IdleConnTimeout:     90 * time.Second,
-		TLSHandshakeTimeout: 30 * time.Second,
-		ForceAttemptHTTP2:   true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-			link, err := s.dispatcher.Dispatch(toDnsContext(ctx, s.dohURL), dest)
-			select {
-			case <-ctx.Done():
-				return nil, ctx.Err()
-			default:
-
-			}
-			if err != nil {
-				return nil, err
-			}
-
-			cc := common.ChainedClosable{}
-			if cw, ok := link.Writer.(common.Closable); ok {
-				cc = append(cc, cw)
-			}
-			if cr, ok := link.Reader.(common.Closable); ok {
-				cc = append(cc, cr)
-			}
-			return cnc.NewConnection(
-				cnc.ConnectionInputMulti(link.Writer),
-				cnc.ConnectionOutputMulti(link.Reader),
-				cnc.ConnectionOnClose(cc),
-			), nil
-		},
-	}
-	s.httpClient = &http.Client{
-		Timeout:   time.Second * 180,
-		Transport: tr,
-	}
-
-	return s, nil
-}
-
-// NewDoHLocalNameServer creates DOH client object for local resolving
-func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
+// NewDoHNameServer creates DOH/DOHL client object for remote/local resolving.
+func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, h2c bool, disableCache bool, clientIP net.IP) *DoHNameServer {
 	url.Scheme = "https"
-	s := baseDOHNameServer(url, "DOHL")
-	tr := &http.Transport{
-		IdleConnTimeout:   90 * time.Second,
-		ForceAttemptHTTP2: true,
-		DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			dest, err := net.ParseDestination(network + ":" + addr)
-			if err != nil {
-				return nil, err
-			}
-			conn, err := internet.DialSystem(ctx, dest, nil)
-			log.Record(&log.AccessMessage{
-				From:   "DNS",
-				To:     s.dohURL,
-				Status: log.AccessAccepted,
-				Detour: "local",
-			})
-			if err != nil {
-				return nil, err
-			}
-			return conn, nil
-		},
+	mode := "DOH"
+	if dispatcher == nil {
+		mode = "DOHL"
+	}
+	errors.LogInfo(context.Background(), "DNS: created ", mode, " client for ", url.String(), ", with h2c ", h2c)
+	s := &DoHNameServer{
+		cacheController: NewCacheController(mode+"//"+url.Host, disableCache),
+		dohURL:          url.String(),
+		clientIP:        clientIP,
 	}
 	s.httpClient = &http.Client{
-		Timeout:   time.Second * 180,
-		Transport: tr,
-	}
-	newError("DNS: created Local DOH client for ", url.String()).AtInfo().WriteToLog()
-	return s
-}
-
-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(),
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		Transport: &http2.Transport{
+			IdleConnTimeout: net.ConnIdleTimeout,
+			ReadIdleTimeout: net.ChromeH2KeepAlivePeriod,
+			DialTLSContext: func(ctx context.Context, network, addr string, cfg *tls.Config) (net.Conn, error) {
+				dest, err := net.ParseDestination(network + ":" + addr)
+				if err != nil {
+					return nil, err
+				}
+				var conn net.Conn
+				if dispatcher != nil {
+					dnsCtx := toDnsContext(ctx, s.dohURL)
+					if h2c {
+						dnsCtx = session.ContextWithMitmAlpn11(dnsCtx, false) // for insurance
+						dnsCtx = session.ContextWithMitmServerName(dnsCtx, url.Hostname())
+					}
+					link, err := dispatcher.Dispatch(dnsCtx, dest)
+					select {
+					case <-ctx.Done():
+						return nil, ctx.Err()
+					default:
+					}
+					if err != nil {
+						return nil, err
+					}
+					cc := common.ChainedClosable{}
+					if cw, ok := link.Writer.(common.Closable); ok {
+						cc = append(cc, cw)
+					}
+					if cr, ok := link.Reader.(common.Closable); ok {
+						cc = append(cc, cr)
+					}
+					conn = cnc.NewConnection(
+						cnc.ConnectionInputMulti(link.Writer),
+						cnc.ConnectionOutputMulti(link.Reader),
+						cnc.ConnectionOnClose(cc),
+					)
+				} else {
+					log.Record(&log.AccessMessage{
+						From:   "DNS",
+						To:     s.dohURL,
+						Status: log.AccessAccepted,
+						Detour: "local",
+					})
+					conn, err = internet.DialSystem(ctx, dest, nil)
+					if err != nil {
+						return nil, err
+					}
+				}
+				if !h2c {
+					conn = utls.UClient(conn, &utls.Config{ServerName: url.Hostname()}, utls.HelloChrome_Auto)
+					if err := conn.(*utls.UConn).HandshakeContext(ctx); err != nil {
+						return nil, err
+					}
+				}
+				return conn, nil
+			},
+		},
 	}
 	return s
 }
 
 // Name implements Server.
 func (s *DoHNameServer) Name() string {
-	return s.name
-}
-
-// Cleanup clears expired items from cache
-func (s *DoHNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *DoHNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0, len(ipRec.IP))
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+	return s.cacheController.name
 }
 
 func (s *DoHNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
-func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying: ", domain).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+func (s *DoHNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, domain string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying: ", domain)
 
-	if s.name+"." == "DOH//"+domain {
-		newError(s.name, " tries to resolve itself! Use IP or set \"hosts\" instead.").AtError().WriteToLog(session.ExportIDToError(ctx))
+	if s.Name()+"." == "DOH//"+domain {
+		errors.LogError(ctx, s.Name(), " tries to resolve itself! Use IP or set \"hosts\" instead.")
+		noResponseErrCh <- errors.New("tries to resolve itself!", s.Name())
 		return
 	}
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	// As we don't want our traffic pattern looks like DoH, we use Random-Length Padding instead of Block-Length Padding recommended in RFC 8467
+	// Although DoH server like 1.1.1.1 will pad the response to Block-Length 468, at least it is better than no padding for response at all
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP, int(crypto.RandBetween(100, 300))))
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -256,7 +158,7 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			})
 
 			// forced to use mux for DOH
-			// dnsCtx = session.ContextWithMuxPrefered(dnsCtx, true)
+			// dnsCtx = session.ContextWithMuxPreferred(dnsCtx, true)
 
 			var cancel context.CancelFunc
 			dnsCtx, cancel = context.WithDeadline(dnsCtx, deadline)
@@ -264,20 +166,23 @@ func (s *DoHNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query for ", domain)
+				noResponseErrCh <- err
 				return
 			}
 			resp, err := s.dohHTTPSContext(dnsCtx, b.Bytes())
 			if err != nil {
-				newError("failed to retrieve response for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to retrieve response for ", domain)
+				noResponseErrCh <- err
 				return
 			}
 			rec, err := parseResponse(resp)
 			if err != nil {
-				newError("failed to handle DOH response for ", domain).Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to handle DOH response for ", domain)
+				noResponseErrCh <- err
 				return
 			}
-			s.updateIP(r, rec)
+			s.cacheController.updateIP(r, rec)
 		}(req)
 	}
 }
@@ -292,6 +197,8 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,
 	req.Header.Add("Accept", "application/dns-message")
 	req.Header.Add("Content-Type", "application/dns-message")
 
+	req.Header.Set("X-Padding", strings.Repeat("X", int(crypto.RandBetween(100, 1000))))
+
 	hc := s.httpClient
 
 	resp, err := hc.Do(req.WithContext(ctx))
@@ -308,103 +215,50 @@ func (s *DoHNameServer) dohHTTPSContext(ctx context.Context, b []byte) ([]byte,
 	return io.ReadAll(resp.Body)
 }
 
-func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	return nil, errRecordNotFound
-}
-
 // QueryIP 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
+func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) { // nolint: dupl
 	fqdn := Fqdn(domain)
+	sub4, sub6 := s.cacheController.registerSubscribers(fqdn, option)
+	defer closeSubscribers(sub4, sub6)
 
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+	if s.cacheController.disableCache {
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.Name())
 	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
+		ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+		if !go_errors.Is(err, errRecordNotFound) {
+			errors.LogDebugInner(ctx, err, s.Name(), " cache HIT ", domain, " -> ", ips)
+			log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
+			return ips, ttl, err
 		}
 	}
 
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
+	noResponseErrCh := make(chan error, 2)
+	s.sendQuery(ctx, noResponseErrCh, fqdn, 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
-		}
-
+	if sub4 != nil {
 		select {
 		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub4.Wait():
+			sub4.Close()
 		}
 	}
+	if sub6 != nil {
+		select {
+		case <-ctx.Done():
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub6.Wait():
+			sub6.Close()
+		}
+	}
+
+	ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+	log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
+	return ips, ttl, err
+
 }

app/dns/nameserver_doh_test.go

@@ -17,12 +17,12 @@ func TestDOHNameServer(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url)
+	s := NewDoHNameServer(url, nil, false, false, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -34,12 +34,12 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url)
+	s := NewDoHNameServer(url, nil, false, false, net.IP(nil))
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -47,13 +47,59 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	}
 
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
 		t.Fatal(r)
 	}
 }
+
+func TestDOHNameServerWithIPv4Override(t *testing.T) {
+	url, err := url.Parse("https+local://1.1.1.1/dns-query")
+	common.Must(err)
+
+	s := NewDoHNameServer(url, nil, false, false, net.IP(nil))
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: true,
+		IPv6Enable: 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 := NewDoHNameServer(url, nil, false, false, net.IP(nil))
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: false,
+		IPv6Enable: true,
+	})
+	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")
+		}
+	}
+}

app/dns/nameserver_fakedns.go

@@ -3,8 +3,8 @@ package dns
 import (
 	"context"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/dns"
 )
 
@@ -12,22 +12,19 @@ type FakeDNSServer struct {
 	fakeDNSEngine dns.FakeDNSEngine
 }
 
-func NewFakeDNSServer() *FakeDNSServer {
-	return &FakeDNSServer{}
+func NewFakeDNSServer(fd dns.FakeDNSEngine) *FakeDNSServer {
+	return &FakeDNSServer{fakeDNSEngine: fd}
 }
 
 func (FakeDNSServer) Name() string {
 	return "FakeDNS"
 }
 
-func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
+func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, opt dns.IPOption) ([]net.IP, uint32, error) {
 	if f.fakeDNSEngine == nil {
-		if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
-			f.fakeDNSEngine = fd
-		}); err != nil {
-			return nil, newError("Unable to locate a fake DNS Engine").Base(err).AtError()
-		}
+		return nil, 0, errors.New("Unable to locate a fake DNS Engine").AtError()
 	}
+
 	var ips []net.Address
 	if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
 		ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)
@@ -37,13 +34,13 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, op
 
 	netIP, err := toNetIP(ips)
 	if err != nil {
-		return nil, newError("Unable to convert IP to net ip").Base(err).AtError()
+		return nil, 0, errors.New("Unable to convert IP to net ip").Base(err).AtError()
 	}
 
-	newError(f.Name(), " got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
+	errors.LogInfo(ctx, f.Name(), " got answer: ", domain, " -> ", ips)
 
 	if len(netIP) > 0 {
-		return netIP, nil
+		return netIP, 1, nil // fakeIP ttl is 1
 	}
-	return nil, dns.ErrEmptyResponse
+	return nil, 0, dns.ErrEmptyResponse
 }

app/dns/nameserver_local.go

@@ -2,9 +2,9 @@ package dns
 
 import (
 	"context"
-	"strings"
 	"time"
 
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/dns"
@@ -16,19 +16,14 @@ type LocalNameServer struct {
 	client *localdns.Client
 }
 
-const errEmptyResponse = "No address associated with hostname"
-
 // QueryIP implements Server.
-func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) {
-	start := time.Now()
-	ips, err = s.client.LookupIP(domain, option)
+func (s *LocalNameServer) QueryIP(ctx context.Context, domain string, option dns.IPOption) (ips []net.IP, ttl uint32, err error) {
 
-	if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) {
-		err = dns.ErrEmptyResponse
-	}
+	start := time.Now()
+	ips, ttl, err = s.client.LookupIP(domain, option)
 
 	if len(ips) > 0 {
-		newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
+		errors.LogInfo(ctx, "Localhost got answer: ", domain, " -> ", ips)
 		log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
 	}
 
@@ -42,13 +37,13 @@ func (s *LocalNameServer) Name() string {
 
 // NewLocalNameServer creates localdns server object for directly lookup in system DNS.
 func NewLocalNameServer() *LocalNameServer {
-	newError("DNS: created localhost client").AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created localhost client")
 	return &LocalNameServer{
 		client: localdns.New(),
 	}
 }
 
 // NewLocalDNSClient creates localdns client object for directly lookup in system DNS.
-func NewLocalDNSClient() *Client {
-	return &Client{server: NewLocalNameServer()}
+func NewLocalDNSClient(ipOption dns.IPOption) *Client {
+	return &Client{server: NewLocalNameServer(), ipOption: &ipOption}
 }

app/dns/nameserver_local_test.go

@@ -7,18 +7,17 @@ import (
 
 	. "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 TestLocalNameServer(t *testing.T) {
 	s := NewLocalNameServer()
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP{}, dns.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
 		FakeEnable: false,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {

app/dns/nameserver_quic.go

@@ -1,51 +1,47 @@
 package dns
 
 import (
+	"bytes"
 	"context"
+	"encoding/binary"
+	go_errors "errors"
 	"net/url"
 	"sync"
-	"sync/atomic"
 	"time"
 
 	"github.com/quic-go/quic-go"
-	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/transport/internet/tls"
-	"golang.org/x/net/dns/dnsmessage"
 	"golang.org/x/net/http2"
 )
 
 // NextProtoDQ - During connection establishment, DNS/QUIC support is indicated
 // by selecting the ALPN token "dq" in the crypto handshake.
-const NextProtoDQ = "doq-i00"
+const NextProtoDQ = "doq"
 
 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
+	cacheController *CacheController
+	destination     *net.Destination
+	connection      *quic.Conn
+	clientIP        net.IP
 }
 
 // NewQUICNameServer creates DNS-over-QUIC client object for local resolving
-func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
-	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()
+func NewQUICNameServer(url *url.URL, disableCache bool, clientIP net.IP) (*QUICNameServer, error) {
+	errors.LogInfo(context.Background(), "DNS: created Local DNS-over-QUIC client for ", url.String())
 
 	var err error
-	port := net.Port(784)
+	port := net.Port(853)
 	if url.Port() != "" {
 		port, err = net.PortFromString(url.Port())
 		if err != nil {
@@ -55,14 +51,9 @@ func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
 	dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &QUICNameServer{
-		ips:         make(map[string]*record),
-		pub:         pubsub.NewService(),
-		name:        url.String(),
-		destination: &dest,
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		cacheController: NewCacheController(url.String(), disableCache),
+		destination:     &dest,
+		clientIP:        clientIP,
 	}
 
 	return s, nil
@@ -70,94 +61,17 @@ func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
 
 // Name returns client name
 func (s *QUICNameServer) Name() string {
-	return s.name
-}
-
-// Cleanup clears expired items from cache
-func (s *QUICNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *QUICNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+	return s.cacheController.name
 }
 
 func (s *QUICNameServer) newReqID() uint16 {
-	return uint16(atomic.AddUint32(&s.reqID, 1))
+	return 0
 }
 
-func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying: ", domain).AtInfo().WriteToLog(session.ExportIDToError(ctx))
+func (s *QUICNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, domain string, option dns_feature.IPOption) {
+	errors.LogInfo(ctx, s.Name(), " querying: ", domain)
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -188,19 +102,37 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query")
+				noResponseErrCh <- err
 				return
 			}
 
+			dnsReqBuf := buf.New()
+			err = binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "binary write failed")
+				noResponseErrCh <- err
+				return
+			}
+			_, err = dnsReqBuf.Write(b.Bytes())
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "buffer write failed")
+				noResponseErrCh <- err
+				return
+			}
+			b.Release()
+
 			conn, err := s.openStream(dnsCtx)
 			if err != nil {
-				newError("failed to open quic connection").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to open quic connection")
+				noResponseErrCh <- err
 				return
 			}
 
-			_, err = conn.Write(b.Bytes())
+			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to send query")
+				noResponseErrCh <- err
 				return
 			}
 
@@ -208,124 +140,87 @@ func (s *QUICNameServer) sendQuery(ctx context.Context, domain string, clientIP
 
 			respBuf := buf.New()
 			defer respBuf.Release()
-			n, err := respBuf.ReadFrom(conn)
+			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
-				newError("failed to read response").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
+				noResponseErrCh <- err
+				return
+			}
+			var length int16
+			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "failed to parse response length")
+				noResponseErrCh <- err
+				return
+			}
+			respBuf.Clear()
+			n, err = respBuf.ReadFullFrom(conn, int32(length))
+			if err != nil && n == 0 {
+				errors.LogErrorInner(ctx, err, "failed to read response length")
+				noResponseErrCh <- err
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
-				newError("failed to handle response").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to handle response")
+				noResponseErrCh <- err
 				return
 			}
-			s.updateIP(r, rec)
+			s.cacheController.updateIP(r, rec)
 		}(req)
 	}
 }
 
-func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	if (option.IPv4Enable && record.A != nil) || (option.IPv6Enable && record.AAAA != nil) {
-		return nil, dns_feature.ErrEmptyResponse
-	}
-
-	return nil, errRecordNotFound
-}
-
 // QueryIP is called from dns.Server->queryIPTimeout
-func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
+func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
 	fqdn := Fqdn(domain)
+	sub4, sub6 := s.cacheController.registerSubscribers(fqdn, option)
+	defer closeSubscribers(sub4, sub6)
 
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+	if s.cacheController.disableCache {
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.Name())
 	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
+		ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+		if !go_errors.Is(err, errRecordNotFound) {
+			errors.LogDebugInner(ctx, err, s.Name(), " cache HIT ", domain, " -> ", ips)
+			log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
+			return ips, ttl, err
 		}
 	}
 
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
+	noResponseErrCh := make(chan error, 2)
+	s.sendQuery(ctx, noResponseErrCh, fqdn, 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
-		}
-
+	if sub4 != nil {
 		select {
 		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub4.Wait():
+			sub4.Close()
 		}
 	}
+	if sub6 != nil {
+		select {
+		case <-ctx.Done():
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub6.Wait():
+			sub6.Close()
+		}
+	}
+
+	ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+	log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
+	return ips, ttl, err
+
 }
 
-func isActive(s quic.Connection) bool {
+func isActive(s *quic.Conn) bool {
 	select {
 	case <-s.Context().Done():
 		return false
@@ -334,8 +229,8 @@ func isActive(s quic.Connection) bool {
 	}
 }
 
-func (s *QUICNameServer) getConnection() (quic.Connection, error) {
-	var conn quic.Connection
+func (s *QUICNameServer) getConnection() (*quic.Conn, error) {
+	var conn *quic.Conn
 	s.RLock()
 	conn = s.connection
 	if conn != nil && isActive(conn) {
@@ -368,13 +263,13 @@ func (s *QUICNameServer) getConnection() (quic.Connection, error) {
 	return conn, nil
 }
 
-func (s *QUICNameServer) openConnection() (quic.Connection, error) {
+func (s *QUICNameServer) openConnection() (*quic.Conn, error) {
 	tlsConfig := tls.Config{}
 	quicConfig := &quic.Config{
 		HandshakeIdleTimeout: handshakeTimeout,
 	}
-
-	conn, err := quic.DialAddrContext(context.Background(), s.destination.NetAddr(), tlsConfig.GetTLSConfig(tls.WithNextProto("http/1.1", http2.NextProtoTLS, NextProtoDQ)), quicConfig)
+	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,
@@ -388,7 +283,7 @@ func (s *QUICNameServer) openConnection() (quic.Connection, error) {
 	return conn, nil
 }
 
-func (s *QUICNameServer) openStream(ctx context.Context) (quic.Stream, error) {
+func (s *QUICNameServer) openStream(ctx context.Context) (*quic.Stream, error) {
 	conn, err := s.getConnection()
 	if err != nil {
 		return nil, err

app/dns/nameserver_quic_test.go

@@ -14,29 +14,74 @@ import (
 )
 
 func TestQUICNameServer(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
+	url, err := url.Parse("quic://dns.adguard-dns.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url)
+	s, err := NewQUICNameServer(url, false, net.IP(nil))
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
 		t.Error("expect some ips, but got 0")
 	}
-
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
 		t.Fatal(r)
 	}
 }
+
+func TestQUICNameServerWithIPv4Override(t *testing.T) {
+	url, err := url.Parse("quic://dns.adguard-dns.com")
+	common.Must(err)
+	s, err := NewQUICNameServer(url, false, net.IP(nil))
+	common.Must(err)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
+		IPv4Enable: true,
+		IPv6Enable: 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-dns.com")
+	common.Must(err)
+	s, err := NewQUICNameServer(url, false, net.IP(nil))
+	common.Must(err)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns.IPOption{
+		IPv4Enable: false,
+		IPv6Enable: true,
+	})
+	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")
+		}
+	}
+}

app/dns/nameserver_tcp.go

@@ -4,41 +4,40 @@ import (
 	"bytes"
 	"context"
 	"encoding/binary"
+	go_errors "errors"
 	"net/url"
-	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
-	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport/internet"
-	"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)
+	cacheController *CacheController
+	destination     *net.Destination
+	reqID           uint32
+	dial            func(context.Context) (net.Conn, error)
+	clientIP        net.IP
 }
 
 // NewTCPNameServer creates DNS over TCP server object for remote resolving.
-func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCP")
+func NewTCPNameServer(
+	url *url.URL,
+	dispatcher routing.Dispatcher,
+	disableCache bool,
+	clientIP net.IP,
+) (*TCPNameServer, error) {
+	s, err := baseTCPNameServer(url, "TCP", disableCache, clientIP)
 	if err != nil {
 		return nil, err
 	}
@@ -59,8 +58,8 @@ func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServ
 }
 
 // NewTCPLocalNameServer creates DNS over TCP client object for local resolving
-func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCPL")
+func NewTCPLocalNameServer(url *url.URL, disableCache bool, clientIP net.IP) (*TCPNameServer, error) {
+	s, err := baseTCPNameServer(url, "TCPL", disableCache, clientIP)
 	if err != nil {
 		return nil, err
 	}
@@ -72,26 +71,20 @@ func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
 	return s, nil
 }
 
-func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
-	var err error
+func baseTCPNameServer(url *url.URL, prefix string, disableCache bool, clientIP net.IP) (*TCPNameServer, error) {
 	port := net.Port(53)
 	if url.Port() != "" {
-		port, err = net.PortFromString(url.Port())
-		if err != nil {
+		var err error
+		if port, err = net.PortFromString(url.Port()); err != nil {
 			return nil, err
 		}
 	}
 	dest := net.TCPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &TCPNameServer{
-		destination: &dest,
-		ips:         make(map[string]*record),
-		pub:         pubsub.NewService(),
-		name:        prefix + "//" + dest.NetAddr(),
-	}
-	s.cleanup = &task.Periodic{
-		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		cacheController: NewCacheController(prefix+"//"+dest.NetAddr(), disableCache),
+		destination:     &dest,
+		clientIP:        clientIP,
 	}
 
 	return s, nil
@@ -99,94 +92,17 @@ func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
 
 // Name implements Server.
 func (s *TCPNameServer) Name() string {
-	return s.name
-}
-
-// Cleanup clears expired items from cache
-func (s *TCPNameServer) Cleanup() error {
-	now := time.Now()
-	s.Lock()
-	defer s.Unlock()
-
-	if len(s.ips) == 0 {
-		return newError("nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
-	}
-
-	return nil
-}
-
-func (s *TCPNameServer) updateIP(req *dnsRequest, ipRec *IPRecord) {
-	elapsed := time.Since(req.start)
-
-	s.Lock()
-	rec, found := s.ips[req.domain]
-	if !found {
-		rec = &record{}
-	}
-	updated := false
-
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		if isNewer(rec.A, ipRec) {
-			rec.A = ipRec
-			updated = true
-		}
-	case dnsmessage.TypeAAAA:
-		addr := make([]net.Address, 0)
-		for _, ip := range ipRec.IP {
-			if len(ip.IP()) == net.IPv6len {
-				addr = append(addr, ip)
-			}
-		}
-		ipRec.IP = addr
-		if isNewer(rec.AAAA, ipRec) {
-			rec.AAAA = ipRec
-			updated = true
-		}
-	}
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-
-	if updated {
-		s.ips[req.domain] = rec
-	}
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		s.pub.Publish(req.domain+"4", nil)
-	case dnsmessage.TypeAAAA:
-		s.pub.Publish(req.domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+	return s.cacheController.name
 }
 
 func (s *TCPNameServer) newReqID() uint16 {
 	return uint16(atomic.AddUint32(&s.reqID, 1))
 }
 
-func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying DNS for: ", domain).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+func (s *TCPNameServer) sendQuery(ctx context.Context, noResponseErrCh chan<- error, domain string, option dns_feature.IPOption) {
+	errors.LogDebug(ctx, s.Name(), " querying DNS for: ", domain)
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
 
 	var deadline time.Time
 	if d, ok := ctx.Deadline(); ok {
@@ -214,24 +130,37 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 
 			b, err := dns.PackMessage(r.msg)
 			if err != nil {
-				newError("failed to pack dns query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to pack dns query")
+				noResponseErrCh <- err
 				return
 			}
 
 			conn, err := s.dial(dnsCtx)
 			if err != nil {
-				newError("failed to dial namesever").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to dial namesever")
+				noResponseErrCh <- err
 				return
 			}
 			defer conn.Close()
 			dnsReqBuf := buf.New()
-			binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
-			dnsReqBuf.Write(b.Bytes())
+			err = binary.Write(dnsReqBuf, binary.BigEndian, uint16(b.Len()))
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "binary write failed")
+				noResponseErrCh <- err
+				return
+			}
+			_, err = dnsReqBuf.Write(b.Bytes())
+			if err != nil {
+				errors.LogErrorInner(ctx, err, "buffer write failed")
+				noResponseErrCh <- err
+				return
+			}
 			b.Release()
 
 			_, err = conn.Write(dnsReqBuf.Bytes())
 			if err != nil {
-				newError("failed to send query").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to send query")
+				noResponseErrCh <- err
 				return
 			}
 			dnsReqBuf.Release()
@@ -240,126 +169,81 @@ func (s *TCPNameServer) sendQuery(ctx context.Context, domain string, clientIP n
 			defer respBuf.Release()
 			n, err := respBuf.ReadFullFrom(conn, 2)
 			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
+				noResponseErrCh <- err
 				return
 			}
 			var length int16
 			err = binary.Read(bytes.NewReader(respBuf.Bytes()), binary.BigEndian, &length)
 			if err != nil {
-				newError("failed to parse response length").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to parse response length")
+				noResponseErrCh <- err
 				return
 			}
 			respBuf.Clear()
 			n, err = respBuf.ReadFullFrom(conn, int32(length))
 			if err != nil && n == 0 {
-				newError("failed to read response length").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to read response length")
+				noResponseErrCh <- err
 				return
 			}
 
 			rec, err := parseResponse(respBuf.Bytes())
 			if err != nil {
-				newError("failed to parse DNS over TCP response").Base(err).AtError().WriteToLog()
+				errors.LogErrorInner(ctx, err, "failed to parse DNS over TCP response")
+				noResponseErrCh <- err
 				return
 			}
 
-			s.updateIP(r, rec)
+			s.cacheController.updateIP(r, rec)
 		}(req)
 	}
 }
 
-func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	return nil, dns_feature.ErrEmptyResponse
-}
-
 // QueryIP implements Server.
-func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
+func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
 	fqdn := Fqdn(domain)
+	sub4, sub6 := s.cacheController.registerSubscribers(fqdn, option)
+	defer closeSubscribers(sub4, sub6)
 
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+	if s.cacheController.disableCache {
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.Name())
 	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
+		ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+		if !go_errors.Is(err, errRecordNotFound) {
+			errors.LogDebugInner(ctx, err, s.Name(), " cache HIT ", domain, " -> ", ips)
+			log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
+			return ips, ttl, err
 		}
 	}
 
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
+	noResponseErrCh := make(chan error, 2)
+	s.sendQuery(ctx, noResponseErrCh, fqdn, 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
-		}
-
+	if sub4 != nil {
 		select {
 		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub4.Wait():
+			sub4.Close()
 		}
 	}
+	if sub6 != nil {
+		select {
+		case <-ctx.Done():
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub6.Wait():
+			sub6.Close()
+		}
+	}
+
+	ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+	log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
+	return ips, ttl, err
+
 }

app/dns/nameserver_tcp_test.go

@@ -16,13 +16,13 @@ import (
 func TestTCPLocalNameServer(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url)
+	s, err := NewTCPLocalNameServer(url, false, net.IP(nil))
 	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{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -33,13 +33,13 @@ 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)
+	s, err := NewTCPLocalNameServer(url, false, net.IP(nil))
 	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{
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, false)
+	})
 	cancel()
 	common.Must(err)
 	if len(ips) == 0 {
@@ -47,13 +47,61 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 	}
 
 	ctx2, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips2, err := s.QueryIP(ctx2, "google.com", net.IP(nil), dns_feature.IPOption{
+	ips2, _, err := s.QueryIP(ctx2, "google.com", dns_feature.IPOption{
 		IPv4Enable: true,
 		IPv6Enable: true,
-	}, true)
+	})
 	cancel()
 	common.Must(err)
 	if r := cmp.Diff(ips2, ips); r != "" {
 		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, false, net.IP(nil))
+	common.Must(err)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: true,
+		IPv6Enable: 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, false, net.IP(nil))
+	common.Must(err)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	ips, _, err := s.QueryIP(ctx, "google.com", dns_feature.IPOption{
+		IPv4Enable: false,
+		IPv6Enable: true,
+	})
+	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")
+		}
+	}
+}

app/dns/nameserver_udp.go

@@ -2,18 +2,18 @@ package dns
 
 import (
 	"context"
+	go_errors "errors"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/protocol/dns"
 	udp_proto "github.com/xtls/xray-core/common/protocol/udp"
-	"github.com/xtls/xray-core/common/session"
-	"github.com/xtls/xray-core/common/signal/pubsub"
 	"github.com/xtls/xray-core/common/task"
 	dns_feature "github.com/xtls/xray-core/features/dns"
 	"github.com/xtls/xray-core/features/routing"
@@ -24,72 +24,55 @@ import (
 // ClassicNameServer implemented traditional UDP DNS.
 type ClassicNameServer struct {
 	sync.RWMutex
-	name      string
-	address   *net.Destination
-	ips       map[string]*record
-	requests  map[uint16]*dnsRequest
-	pub       *pubsub.Service
-	udpServer *udp.Dispatcher
-	cleanup   *task.Periodic
-	reqID     uint32
+	cacheController *CacheController
+	address         *net.Destination
+	requests        map[uint16]*udpDnsRequest
+	udpServer       *udp.Dispatcher
+	requestsCleanup *task.Periodic
+	reqID           uint32
+	clientIP        net.IP
+}
+
+type udpDnsRequest struct {
+	dnsRequest
+	ctx context.Context
 }
 
 // NewClassicNameServer creates udp server object for remote resolving.
-func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher) *ClassicNameServer {
+func NewClassicNameServer(address net.Destination, dispatcher routing.Dispatcher, disableCache bool, clientIP net.IP) *ClassicNameServer {
 	// default to 53 if unspecific
 	if address.Port == 0 {
 		address.Port = net.Port(53)
 	}
 
 	s := &ClassicNameServer{
-		address:  &address,
-		ips:      make(map[string]*record),
-		requests: make(map[uint16]*dnsRequest),
-		pub:      pubsub.NewService(),
-		name:     strings.ToUpper(address.String()),
+		cacheController: NewCacheController(strings.ToUpper(address.String()), disableCache),
+		address:         &address,
+		requests:        make(map[uint16]*udpDnsRequest),
+		clientIP:        clientIP,
 	}
-	s.cleanup = &task.Periodic{
+	s.requestsCleanup = &task.Periodic{
 		Interval: time.Minute,
-		Execute:  s.Cleanup,
+		Execute:  s.RequestsCleanup,
 	}
 	s.udpServer = udp.NewDispatcher(dispatcher, s.HandleResponse)
-	newError("DNS: created UDP client initialized for ", address.NetAddr()).AtInfo().WriteToLog()
+	errors.LogInfo(context.Background(), "DNS: created UDP client initialized for ", address.NetAddr())
 	return s
 }
 
 // Name implements Server.
 func (s *ClassicNameServer) Name() string {
-	return s.name
+	return s.cacheController.name
 }
 
-// Cleanup clears expired items from cache
-func (s *ClassicNameServer) Cleanup() error {
+// RequestsCleanup clears expired items from cache
+func (s *ClassicNameServer) RequestsCleanup() error {
 	now := time.Now()
 	s.Lock()
 	defer s.Unlock()
 
-	if len(s.ips) == 0 && len(s.requests) == 0 {
-		return newError(s.name, " nothing to do. stopping...")
-	}
-
-	for domain, record := range s.ips {
-		if record.A != nil && record.A.Expire.Before(now) {
-			record.A = nil
-		}
-		if record.AAAA != nil && record.AAAA.Expire.Before(now) {
-			record.AAAA = nil
-		}
-
-		if record.A == nil && record.AAAA == nil {
-			newError(s.name, " cleanup ", domain).AtDebug().WriteToLog()
-			delete(s.ips, domain)
-		} else {
-			s.ips[domain] = record
-		}
-	}
-
-	if len(s.ips) == 0 {
-		s.ips = make(map[string]*record)
+	if len(s.requests) == 0 {
+		return errors.New(s.Name(), " nothing to do. stopping...")
 	}
 
 	for id, req := range s.requests {
@@ -99,7 +82,7 @@ func (s *ClassicNameServer) Cleanup() error {
 	}
 
 	if len(s.requests) == 0 {
-		s.requests = make(map[uint16]*dnsRequest)
+		s.requests = make(map[uint16]*udpDnsRequest)
 	}
 
 	return nil
@@ -109,7 +92,7 @@ func (s *ClassicNameServer) Cleanup() error {
 func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_proto.Packet) {
 	ipRec, err := parseResponse(packet.Payload.Bytes())
 	if err != nil {
-		newError(s.name, " fail to parse responded DNS udp").AtError().WriteToLog()
+		errors.LogError(ctx, s.Name(), " fail to parse responded DNS udp")
 		return
 	}
 
@@ -122,175 +105,107 @@ func (s *ClassicNameServer) HandleResponse(ctx context.Context, packet *udp_prot
 	}
 	s.Unlock()
 	if !ok {
-		newError(s.name, " cannot find the pending request").AtError().WriteToLog()
+		errors.LogError(ctx, s.Name(), " cannot find the pending request")
 		return
 	}
 
-	var rec record
-	switch req.reqType {
-	case dnsmessage.TypeA:
-		rec.A = ipRec
-	case dnsmessage.TypeAAAA:
-		rec.AAAA = ipRec
+	// if truncated, retry with EDNS0 option(udp payload size: 1350)
+	if ipRec.RawHeader.Truncated {
+		// if already has EDNS0 option, no need to retry
+		if len(req.msg.Additionals) == 0 {
+			// copy necessary meta data from original request
+			// and add EDNS0 option
+			opt := new(dnsmessage.Resource)
+			common.Must(opt.Header.SetEDNS0(1350, 0xfe00, true))
+			opt.Body = &dnsmessage.OPTResource{}
+			newMsg := *req.msg
+			newReq := *req
+			newMsg.Additionals = append(newMsg.Additionals, *opt)
+			newMsg.ID = s.newReqID()
+			newReq.msg = &newMsg
+			s.addPendingRequest(&newReq)
+			b, _ := dns.PackMessage(newReq.msg)
+			s.udpServer.Dispatch(toDnsContext(newReq.ctx, s.address.String()), *s.address, b)
+			return
+		}
 	}
 
-	elapsed := time.Since(req.start)
-	newError(s.name, " got answer: ", req.domain, " ", req.reqType, " -> ", ipRec.IP, " ", elapsed).AtInfo().WriteToLog()
-	if len(req.domain) > 0 && (rec.A != nil || rec.AAAA != nil) {
-		s.updateIP(req.domain, &rec)
-	}
-}
-
-func (s *ClassicNameServer) updateIP(domain string, newRec *record) {
-	s.Lock()
-
-	rec, found := s.ips[domain]
-	if !found {
-		rec = &record{}
-	}
-
-	updated := false
-	if isNewer(rec.A, newRec.A) {
-		rec.A = newRec.A
-		updated = true
-	}
-	if isNewer(rec.AAAA, newRec.AAAA) {
-		rec.AAAA = newRec.AAAA
-		updated = true
-	}
-
-	if updated {
-		newError(s.name, " updating IP records for domain:", domain).AtDebug().WriteToLog()
-		s.ips[domain] = rec
-	}
-	if newRec.A != nil {
-		s.pub.Publish(domain+"4", nil)
-	}
-	if newRec.AAAA != nil {
-		s.pub.Publish(domain+"6", nil)
-	}
-	s.Unlock()
-	common.Must(s.cleanup.Start())
+	s.cacheController.updateIP(&req.dnsRequest, ipRec)
 }
 
 func (s *ClassicNameServer) newReqID() uint16 {
 	return uint16(atomic.AddUint32(&s.reqID, 1))
 }
 
-func (s *ClassicNameServer) addPendingRequest(req *dnsRequest) {
+func (s *ClassicNameServer) addPendingRequest(req *udpDnsRequest) {
 	s.Lock()
-	defer s.Unlock()
-
 	id := req.msg.ID
 	req.expire = time.Now().Add(time.Second * 8)
 	s.requests[id] = req
+	s.Unlock()
+	common.Must(s.requestsCleanup.Start())
 }
 
-func (s *ClassicNameServer) sendQuery(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption) {
-	newError(s.name, " querying DNS for: ", domain).AtDebug().WriteToLog(session.ExportIDToError(ctx))
+func (s *ClassicNameServer) sendQuery(ctx context.Context, _ chan<- error, domain string, option dns_feature.IPOption) {
+	errors.LogDebug(ctx, s.Name(), " querying DNS for: ", domain)
 
-	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(clientIP))
+	reqs := buildReqMsgs(domain, option, s.newReqID, genEDNS0Options(s.clientIP, 0))
 
 	for _, req := range reqs {
-		s.addPendingRequest(req)
+		udpReq := &udpDnsRequest{
+			dnsRequest: *req,
+			ctx:        ctx,
+		}
+		s.addPendingRequest(udpReq)
 		b, _ := dns.PackMessage(req.msg)
 		s.udpServer.Dispatch(toDnsContext(ctx, s.address.String()), *s.address, b)
 	}
 }
 
-func (s *ClassicNameServer) findIPsForDomain(domain string, option dns_feature.IPOption) ([]net.IP, error) {
-	s.RLock()
-	record, found := s.ips[domain]
-	s.RUnlock()
-
-	if !found {
-		return nil, errRecordNotFound
-	}
-
-	var err4 error
-	var err6 error
-	var ips []net.Address
-	var ip6 []net.Address
-
-	if option.IPv4Enable {
-		ips, err4 = record.A.getIPs()
-	}
-
-	if option.IPv6Enable {
-		ip6, err6 = record.AAAA.getIPs()
-		ips = append(ips, ip6...)
-	}
-
-	if len(ips) > 0 {
-		return toNetIP(ips)
-	}
-
-	if err4 != nil {
-		return nil, err4
-	}
-
-	if err6 != nil {
-		return nil, err6
-	}
-
-	return nil, dns_feature.ErrEmptyResponse
-}
-
 // QueryIP implements Server.
-func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
+func (s *ClassicNameServer) QueryIP(ctx context.Context, domain string, option dns_feature.IPOption) ([]net.IP, uint32, error) {
 	fqdn := Fqdn(domain)
+	sub4, sub6 := s.cacheController.registerSubscribers(fqdn, option)
+	defer closeSubscribers(sub4, sub6)
 
-	if disableCache {
-		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
+	if s.cacheController.disableCache {
+		errors.LogDebug(ctx, "DNS cache is disabled. Querying IP for ", domain, " at ", s.Name())
 	} else {
-		ips, err := s.findIPsForDomain(fqdn, option)
-		if err != errRecordNotFound {
-			newError(s.name, " cache HIT ", domain, " -> ", ips).Base(err).AtDebug().WriteToLog()
-			log.Record(&log.DNSLog{Server: s.name, Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
-			return ips, err
+		ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+		if !go_errors.Is(err, errRecordNotFound) {
+			errors.LogDebugInner(ctx, err, s.Name(), " cache HIT ", domain, " -> ", ips)
+			log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSCacheHit, Elapsed: 0, Error: err})
+			return ips, ttl, err
 		}
 	}
 
-	// ipv4 and ipv6 belong to different subscription groups
-	var sub4, sub6 *pubsub.Subscriber
-	if option.IPv4Enable {
-		sub4 = s.pub.Subscribe(fqdn + "4")
-		defer sub4.Close()
-	}
-	if option.IPv6Enable {
-		sub6 = s.pub.Subscribe(fqdn + "6")
-		defer sub6.Close()
-	}
-	done := make(chan interface{})
-	go func() {
-		if sub4 != nil {
-			select {
-			case <-sub4.Wait():
-			case <-ctx.Done():
-			}
-		}
-		if sub6 != nil {
-			select {
-			case <-sub6.Wait():
-			case <-ctx.Done():
-			}
-		}
-		close(done)
-	}()
-	s.sendQuery(ctx, fqdn, clientIP, option)
+	noResponseErrCh := make(chan error, 2)
+	s.sendQuery(ctx, noResponseErrCh, fqdn, 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
-		}
-
+	if sub4 != nil {
 		select {
 		case <-ctx.Done():
-			return nil, ctx.Err()
-		case <-done:
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub4.Wait():
+			sub4.Close()
 		}
 	}
+	if sub6 != nil {
+		select {
+		case <-ctx.Done():
+			return nil, 0, ctx.Err()
+		case err := <-noResponseErrCh:
+			return nil, 0, err
+		case <-sub6.Wait():
+			sub6.Close()
+		}
+	}
+
+	ips, ttl, err := s.cacheController.findIPsForDomain(fqdn, option)
+	log.Record(&log.DNSLog{Server: s.Name(), Domain: domain, Result: ips, Status: log.DNSQueried, Elapsed: time.Since(start), Error: err})
+	return ips, ttl, err
+
 }

app/log/command/command.go

@@ -1,12 +1,11 @@
 package command
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 
 	"github.com/xtls/xray-core/app/log"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	grpc "google.golang.org/grpc"
 )
@@ -19,13 +18,13 @@ type LoggerServer struct {
 func (s *LoggerServer) RestartLogger(ctx context.Context, request *RestartLoggerRequest) (*RestartLoggerResponse, error) {
 	logger := s.V.GetFeature((*log.Instance)(nil))
 	if logger == nil {
-		return nil, newError("unable to get logger instance")
+		return nil, errors.New("unable to get logger instance")
 	}
 	if err := logger.Close(); err != nil {
-		return nil, newError("failed to close logger").Base(err)
+		return nil, errors.New("failed to close logger").Base(err)
 	}
 	if err := logger.Start(); err != nil {
-		return nil, newError("failed to start logger").Base(err)
+		return nil, errors.New("failed to start logger").Base(err)
 	}
 	return &RestartLoggerResponse{}, nil
 }

app/log/command/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/log/command/config.proto
 
 package command
@@ -28,11 +28,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -43,7 +41,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -66,11 +64,9 @@ type RestartLoggerRequest struct {
 
 func (x *RestartLoggerRequest) Reset() {
 	*x = RestartLoggerRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *RestartLoggerRequest) String() string {
@@ -81,7 +77,7 @@ func (*RestartLoggerRequest) ProtoMessage() {}
 
 func (x *RestartLoggerRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -104,11 +100,9 @@ type RestartLoggerResponse struct {
 
 func (x *RestartLoggerResponse) Reset() {
 	*x = RestartLoggerResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_command_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_command_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *RestartLoggerResponse) String() string {
@@ -119,7 +113,7 @@ func (*RestartLoggerResponse) ProtoMessage() {}
 
 func (x *RestartLoggerResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_command_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -174,7 +168,7 @@ func file_app_log_command_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_log_command_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_app_log_command_config_proto_goTypes = []interface{}{
+var file_app_log_command_config_proto_goTypes = []any{
 	(*Config)(nil),                // 0: xray.app.log.command.Config
 	(*RestartLoggerRequest)(nil),  // 1: xray.app.log.command.RestartLoggerRequest
 	(*RestartLoggerResponse)(nil), // 2: xray.app.log.command.RestartLoggerResponse
@@ -194,44 +188,6 @@ func file_app_log_command_config_proto_init() {
 	if File_app_log_command_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_log_command_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_log_command_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RestartLoggerRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_log_command_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RestartLoggerResponse); 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{

app/log/command/config_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.2.0
-// - protoc             v3.21.12
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.28.2
 // source: app/log/command/config.proto
 
 package command
@@ -15,8 +15,12 @@ import (
 
 // 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
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	LoggerService_RestartLogger_FullMethodName = "/xray.app.log.command.LoggerService/RestartLogger"
+)
 
 // LoggerServiceClient is the client API for LoggerService service.
 //
@@ -34,8 +38,9 @@ func NewLoggerServiceClient(cc grpc.ClientConnInterface) LoggerServiceClient {
 }
 
 func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLoggerRequest, opts ...grpc.CallOption) (*RestartLoggerResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RestartLoggerResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.log.command.LoggerService/RestartLogger", in, out, opts...)
+	err := c.cc.Invoke(ctx, LoggerService_RestartLogger_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -44,20 +49,24 @@ func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLogg
 
 // LoggerServiceServer is the server API for LoggerService service.
 // All implementations must embed UnimplementedLoggerServiceServer
-// for forward compatibility
+// for forward compatibility.
 type LoggerServiceServer interface {
 	RestartLogger(context.Context, *RestartLoggerRequest) (*RestartLoggerResponse, error)
 	mustEmbedUnimplementedLoggerServiceServer()
 }
 
-// UnimplementedLoggerServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedLoggerServiceServer struct {
-}
+// UnimplementedLoggerServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedLoggerServiceServer struct{}
 
 func (UnimplementedLoggerServiceServer) RestartLogger(context.Context, *RestartLoggerRequest) (*RestartLoggerResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RestartLogger not implemented")
 }
 func (UnimplementedLoggerServiceServer) mustEmbedUnimplementedLoggerServiceServer() {}
+func (UnimplementedLoggerServiceServer) testEmbeddedByValue()                       {}
 
 // UnsafeLoggerServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to LoggerServiceServer will
@@ -67,6 +76,13 @@ type UnsafeLoggerServiceServer interface {
 }
 
 func RegisterLoggerServiceServer(s grpc.ServiceRegistrar, srv LoggerServiceServer) {
+	// If the following call pancis, it indicates UnimplementedLoggerServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&LoggerService_ServiceDesc, srv)
 }
 
@@ -80,7 +96,7 @@ func _LoggerService_RestartLogger_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.log.command.LoggerService/RestartLogger",
+		FullMethod: LoggerService_RestartLogger_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(LoggerServiceServer).RestartLogger(ctx, req.(*RestartLoggerRequest))

app/log/command/errors.generated.go

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

app/log/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/log/config.proto
 
 package log
@@ -84,15 +84,14 @@ type Config struct {
 	AccessLogType LogType      `protobuf:"varint,4,opt,name=access_log_type,json=accessLogType,proto3,enum=xray.app.log.LogType" json:"access_log_type,omitempty"`
 	AccessLogPath string       `protobuf:"bytes,5,opt,name=access_log_path,json=accessLogPath,proto3" json:"access_log_path,omitempty"`
 	EnableDnsLog  bool         `protobuf:"varint,6,opt,name=enable_dns_log,json=enableDnsLog,proto3" json:"enable_dns_log,omitempty"`
+	MaskAddress   string       `protobuf:"bytes,7,opt,name=mask_address,json=maskAddress,proto3" json:"mask_address,omitempty"`
 }
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_log_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_log_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -103,7 +102,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_log_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -160,13 +159,20 @@ func (x *Config) GetEnableDnsLog() bool {
 	return false
 }
 
+func (x *Config) GetMaskAddress() string {
+	if x != nil {
+		return x.MaskAddress
+	}
+	return ""
+}
+
 var File_app_log_config_proto protoreflect.FileDescriptor
 
 var file_app_log_config_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0x2f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67,
 	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0c, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
 	0x2e, 0x6c, 0x6f, 0x67, 0x1a, 0x14, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x6c, 0x6f, 0x67,
-	0x2f, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xbb, 0x02, 0x0a, 0x06, 0x43,
+	0x2f, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xde, 0x02, 0x0a, 0x06, 0x43,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x3b, 0x0a, 0x0e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x6c,
 	0x6f, 0x67, 0x5f, 0x74, 0x79, 0x70, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x15, 0x2e,
 	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x2e, 0x4c, 0x6f, 0x67,
@@ -186,15 +192,18 @@ var file_app_log_config_proto_rawDesc = []byte{
 	0x01, 0x28, 0x09, 0x52, 0x0d, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x4c, 0x6f, 0x67, 0x50, 0x61,
 	0x74, 0x68, 0x12, 0x24, 0x0a, 0x0e, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x5f, 0x64, 0x6e, 0x73,
 	0x5f, 0x6c, 0x6f, 0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0c, 0x65, 0x6e, 0x61, 0x62,
-	0x6c, 0x65, 0x44, 0x6e, 0x73, 0x4c, 0x6f, 0x67, 0x2a, 0x35, 0x0a, 0x07, 0x4c, 0x6f, 0x67, 0x54,
-	0x79, 0x70, 0x65, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x10, 0x00, 0x12, 0x0b, 0x0a,
-	0x07, 0x43, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x46, 0x69,
-	0x6c, 0x65, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x10, 0x03, 0x42,
-	0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e,
-	0x6c, 0x6f, 0x67, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
-	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
-	0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e,
-	0x41, 0x70, 0x70, 0x2e, 0x4c, 0x6f, 0x67, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6c, 0x65, 0x44, 0x6e, 0x73, 0x4c, 0x6f, 0x67, 0x12, 0x21, 0x0a, 0x0c, 0x6d, 0x61, 0x73, 0x6b,
+	0x5f, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18, 0x07, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b,
+	0x6d, 0x61, 0x73, 0x6b, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x2a, 0x35, 0x0a, 0x07, 0x4c,
+	0x6f, 0x67, 0x54, 0x79, 0x70, 0x65, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x6f, 0x6e, 0x65, 0x10, 0x00,
+	0x12, 0x0b, 0x0a, 0x07, 0x43, 0x6f, 0x6e, 0x73, 0x6f, 0x6c, 0x65, 0x10, 0x01, 0x12, 0x08, 0x0a,
+	0x04, 0x46, 0x69, 0x6c, 0x65, 0x10, 0x02, 0x12, 0x09, 0x0a, 0x05, 0x45, 0x76, 0x65, 0x6e, 0x74,
+	0x10, 0x03, 0x42, 0x46, 0x0a, 0x10, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61,
+	0x70, 0x70, 0x2e, 0x6c, 0x6f, 0x67, 0x50, 0x01, 0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
+	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63,
+	0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6c, 0x6f, 0x67, 0xaa, 0x02, 0x0c, 0x58, 0x72,
+	0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4c, 0x6f, 0x67, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }
 
 var (
@@ -211,7 +220,7 @@ func file_app_log_config_proto_rawDescGZIP() []byte {
 
 var file_app_log_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_app_log_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_app_log_config_proto_goTypes = []interface{}{
+var file_app_log_config_proto_goTypes = []any{
 	(LogType)(0),      // 0: xray.app.log.LogType
 	(*Config)(nil),    // 1: xray.app.log.Config
 	(log.Severity)(0), // 2: xray.common.log.Severity
@@ -232,20 +241,6 @@ func file_app_log_config_proto_init() {
 	if File_app_log_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_log_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{

app/log/config.proto

@@ -23,4 +23,5 @@ message Config {
   LogType access_log_type = 4;
   string access_log_path = 5;
   bool enable_dns_log = 6;
+  string mask_address= 7;
 }

app/log/errors.generated.go

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

app/log/log.go

@@ -1,12 +1,14 @@
 package log
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
+	"fmt"
+	"regexp"
+	"strings"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 )
 
@@ -29,13 +31,13 @@ func New(ctx context.Context, config *Config) (*Instance, error) {
 	}
 	log.RegisterHandler(g)
 
-	// start logger instantly on inited
-	// other modules would log during init
+	// start logger now,
+	// then other modules will be able to log during initialization
 	if err := g.startInternal(); err != nil {
 		return nil, err
 	}
 
-	newError("Logger started").AtDebug().WriteToLog()
+	errors.LogDebug(ctx, "Logger started")
 	return g, nil
 }
 
@@ -77,10 +79,10 @@ func (g *Instance) startInternal() error {
 	g.active = true
 
 	if err := g.initAccessLogger(); err != nil {
-		return newError("failed to initialize access logger").Base(err).AtWarning()
+		return errors.New("failed to initialize access logger").Base(err).AtWarning()
 	}
 	if err := g.initErrorLogger(); err != nil {
-		return newError("failed to initialize error logger").Base(err).AtWarning()
+		return errors.New("failed to initialize error logger").Base(err).AtWarning()
 	}
 
 	return nil
@@ -100,18 +102,25 @@ func (g *Instance) Handle(msg log.Message) {
 		return
 	}
 
+	var Msg log.Message
+	if g.config.MaskAddress != "" {
+		Msg = &MaskedMsgWrapper{Message: msg, config: g.config}
+	} else {
+		Msg = msg
+	}
+
 	switch msg := msg.(type) {
 	case *log.AccessMessage:
 		if g.accessLogger != nil {
-			g.accessLogger.Handle(msg)
+			g.accessLogger.Handle(Msg)
 		}
 	case *log.DNSLog:
 		if g.dns && g.accessLogger != nil {
-			g.accessLogger.Handle(msg)
+			g.accessLogger.Handle(Msg)
 		}
 	case *log.GeneralMessage:
 		if g.errorLogger != nil && msg.Severity <= g.config.ErrorLogLevel {
-			g.errorLogger.Handle(msg)
+			g.errorLogger.Handle(Msg)
 		}
 	default:
 		// Swallow
@@ -120,7 +129,7 @@ func (g *Instance) Handle(msg log.Message) {
 
 // Close implements common.Closable.Close().
 func (g *Instance) Close() error {
-	newError("Logger closing").AtDebug().WriteToLog()
+	errors.LogDebug(context.Background(), "Logger closing")
 
 	g.Lock()
 	defer g.Unlock()
@@ -140,6 +149,56 @@ func (g *Instance) Close() error {
 	return nil
 }
 
+// MaskedMsgWrapper is to wrap the string() method to mask IP addresses in the log.
+type MaskedMsgWrapper struct {
+	log.Message
+	config *Config
+}
+
+func (m *MaskedMsgWrapper) String() string {
+	str := m.Message.String()
+
+	ipv4Regex := regexp.MustCompile(`(\d{1,3}\.){3}\d{1,3}`)
+	ipv6Regex := regexp.MustCompile(`((?:[\da-fA-F]{0,4}:[\da-fA-F]{0,4}){2,7})(?:[\/\\%](\d{1,3}))?`)
+
+	// Process ipv4
+	maskedMsg := ipv4Regex.ReplaceAllStringFunc(str, func(ip string) string {
+		parts := strings.Split(ip, ".")
+		switch m.config.MaskAddress {
+		case "half":
+			return fmt.Sprintf("%s.%s.*.*", parts[0], parts[1])
+		case "quarter":
+			return fmt.Sprintf("%s.*.*.*", parts[0])
+		case "full":
+			return "[Masked IPv4]"
+		default:
+			return ip
+		}
+	})
+
+	// process ipv6
+	maskedMsg = ipv6Regex.ReplaceAllStringFunc(maskedMsg, func(ip string) string {
+		parts := strings.Split(ip, ":")
+		switch m.config.MaskAddress {
+		case "half":
+			if len(parts) >= 2 {
+				return fmt.Sprintf("%s:%s::/32", parts[0], parts[1])
+			}
+		case "quarter":
+			if len(parts) >= 1 {
+				return fmt.Sprintf("%s::/16", parts[0])
+			}
+		case "full":
+			return "Masked IPv6" // Do not use [Masked IPv6] like ipv4, or you will get "[[Masked IPv6]]" (v6 address already has [])
+		default:
+			return ip
+		}
+		return ip
+	})
+
+	return maskedMsg
+}
+
 func init() {
 	common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
 		return New(ctx, config.(*Config))

app/log/log_creator.go

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

app/metrics/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/metrics/config.proto
 
 package metrics
@@ -27,16 +27,15 @@ type Config struct {
 	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"`
+	Tag    string `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
+	Listen string `protobuf:"bytes,2,opt,name=listen,proto3" json:"listen,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)
-	}
+	mi := &file_app_metrics_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -47,7 +46,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_metrics_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -69,20 +68,28 @@ func (x *Config) GetTag() string {
 	return ""
 }
 
+func (x *Config) GetListen() string {
+	if x != nil {
+		return x.Listen
+	}
+	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,
+	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x22, 0x32, 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,
+	0x01, 0x28, 0x09, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x16, 0x0a, 0x06, 0x6c, 0x69, 0x73, 0x74,
+	0x65, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x6c, 0x69, 0x73, 0x74, 0x65, 0x6e,
+	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 (
@@ -98,7 +105,7 @@ func file_app_metrics_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_metrics_config_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
-var file_app_metrics_config_proto_goTypes = []interface{}{
+var file_app_metrics_config_proto_goTypes = []any{
 	(*Config)(nil), // 0: xray.app.metrics.Config
 }
 var file_app_metrics_config_proto_depIdxs = []int32{
@@ -114,20 +121,6 @@ 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{

app/metrics/config.proto

@@ -10,4 +10,5 @@ option java_multiple_files = true;
 message Config {
   // Tag of the outbound handler that handles metrics http connections.
   string tag = 1;
+  string listen = 2;
 }

app/metrics/errors.generated.go

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

app/metrics/metrics.go

@@ -10,6 +10,7 @@ import (
 	"github.com/xtls/xray-core/app/observatory"
 	"github.com/xtls/xray-core/app/stats"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/core"
@@ -23,12 +24,15 @@ type MetricsHandler struct {
 	statsManager feature_stats.Manager
 	observatory  extension.Observatory
 	tag          string
+	listen       string
+	tcpListener  net.Listener
 }
 
 // NewMetricsHandler creates a new MetricsHandler based on the given config.
 func NewMetricsHandler(ctx context.Context, config *Config) (*MetricsHandler, error) {
 	c := &MetricsHandler{
-		tag: config.Tag,
+		tag:    config.Tag,
+		listen: config.Listen,
 	}
 	common.Must(core.RequireFeatures(ctx, func(om outbound.Manager, sm feature_stats.Manager) {
 		c.statsManager = sm
@@ -86,6 +90,23 @@ func (p *MetricsHandler) Type() interface{} {
 }
 
 func (p *MetricsHandler) Start() error {
+
+	// direct listen a port if listen is set
+	if p.listen != "" {
+		TCPlistener, err := net.Listen("tcp", p.listen)
+		if err != nil {
+			return err
+		}
+		p.tcpListener = TCPlistener
+		errors.LogInfo(context.Background(), "Metrics server listening on ", p.listen)
+
+		go func() {
+			if err := http.Serve(TCPlistener, http.DefaultServeMux); err != nil {
+				errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
+			}
+		}()
+	}
+
 	listener := &OutboundListener{
 		buffer: make(chan net.Conn, 4),
 		done:   done.New(),
@@ -93,12 +114,12 @@ func (p *MetricsHandler) Start() error {
 
 	go func() {
 		if err := http.Serve(listener, http.DefaultServeMux); err != nil {
-			newError("failed to start metrics server").Base(err).AtError().WriteToLog()
+			errors.LogErrorInner(context.Background(), err, "failed to start metrics server")
 		}
 	}()
 
 	if err := p.ohm.RemoveHandler(context.Background(), p.tag); err != nil {
-		newError("failed to remove existing handler").WriteToLog()
+		errors.LogInfo(context.Background(), "failed to remove existing handler")
 	}
 
 	return p.ohm.AddHandler(context.Background(), &Outbound{

app/metrics/outbound.go

@@ -5,8 +5,10 @@ import (
 	"sync"
 
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/signal/done"
 	"github.com/xtls/xray-core/transport"
 )
@@ -31,7 +33,7 @@ func (l *OutboundListener) add(conn net.Conn) {
 func (l *OutboundListener) Accept() (net.Conn, error) {
 	select {
 	case <-l.done.Wait():
-		return nil, newError("listen closed")
+		return nil, errors.New("listen closed")
 	case c := <-l.buffer:
 		return c, nil
 	}
@@ -107,3 +109,13 @@ func (co *Outbound) Close() error {
 	co.closed = true
 	return co.listener.Close()
 }
+
+// SenderSettings implements outbound.Handler.
+func (co *Outbound) SenderSettings() *serial.TypedMessage {
+	return nil
+}
+
+// ProxySettings implements outbound.Handler.
+func (co *Outbound) ProxySettings() *serial.TypedMessage {
+	return nil
+}

app/observatory/burst/burst.go

@@ -0,0 +1,12 @@
+package burst
+
+import (
+	"math"
+	"time"
+)
+
+const (
+	rttFailed = time.Duration(math.MaxInt64 - iota)
+	rttUntested
+	rttUnqualified
+)

app/observatory/burst/burstobserver.go

@@ -0,0 +1,113 @@
+package burst
+
+import (
+	"context"
+
+	"sync"
+
+	"github.com/xtls/xray-core/app/observatory"
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/signal/done"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/features/extension"
+	"github.com/xtls/xray-core/features/outbound"
+	"github.com/xtls/xray-core/features/routing"
+	"google.golang.org/protobuf/proto"
+)
+
+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, errors.New("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
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
+		outboundManager = om
+		dispatcher = rd
+	})
+	if err != nil {
+		return nil, errors.New("Cannot get depended features").Base(err)
+	}
+	hp := NewHealthPing(ctx, dispatcher, 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))
+	}))
+}

app/observatory/burst/config.pb.go

@@ -0,0 +1,257 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
+// 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{}
+	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 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"`
+	// http method to make request
+	HttpMethod string `protobuf:"bytes,6,opt,name=httpMethod,proto3" json:"httpMethod,omitempty"`
+}
+
+func (x *HealthPingConfig) Reset() {
+	*x = HealthPingConfig{}
+	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 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
+}
+
+func (x *HealthPingConfig) GetHttpMethod() string {
+	if x != nil {
+		return x.HttpMethod
+	}
+	return ""
+}
+
+var File_app_observatory_burst_config_proto protoreflect.FileDescriptor
+
+var file_app_observatory_burst_config_proto_rawDesc = []byte{
+	0x0a, 0x22, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
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+	0x66, 0x69, 0x67, 0x52, 0x0a, 0x70, 0x69, 0x6e, 0x67, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22,
+	0xd4, 0x01, 0x0a, 0x10, 0x48, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x50, 0x69, 0x6e, 0x67, 0x43, 0x6f,
+	0x6e, 0x66, 0x69, 0x67, 0x12, 0x20, 0x0a, 0x0b, 0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74,
+	0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x64, 0x65, 0x73, 0x74, 0x69,
+	0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x22, 0x0a, 0x0c, 0x63, 0x6f, 0x6e, 0x6e, 0x65, 0x63,
+	0x74, 0x69, 0x76, 0x69, 0x74, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x63, 0x6f,
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+	0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x18, 0x03, 0x20, 0x01, 0x28, 0x03, 0x52, 0x08, 0x69, 0x6e,
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+	0x74, 0x68, 0x6f, 0x64, 0x18, 0x06, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x68, 0x74, 0x74, 0x70,
+	0x4d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x42, 0x70, 0x0a, 0x1e, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72,
+	0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
+	0x72, 0x79, 0x2e, 0x62, 0x75, 0x72, 0x73, 0x74, 0x50, 0x01, 0x5a, 0x2f, 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, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76,
+	0x61, 0x74, 0x6f, 0x72, 0x79, 0x2f, 0x62, 0x75, 0x72, 0x73, 0x74, 0xaa, 0x02, 0x1a, 0x58, 0x72,
+	0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f,
+	0x72, 0x79, 0x2e, 0x42, 0x75, 0x72, 0x73, 0x74, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+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 = []any{
+	(*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
+	}
+	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
+}

app/observatory/burst/config.proto

@@ -0,0 +1,32 @@
+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;
+  // http method to make request
+  string httpMethod = 6;
+
+}

app/observatory/burst/healthping.go

@@ -0,0 +1,268 @@
+package burst
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/features/routing"
+)
+
+// 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"`
+	HttpMethod    string        `json:"httpMethod"`
+}
+
+// HealthPing is the health checker for balancers
+type HealthPing struct {
+	ctx         context.Context
+	dispatcher  routing.Dispatcher
+	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, dispatcher routing.Dispatcher, config *HealthPingConfig) *HealthPing {
+	settings := &HealthPingSettings{}
+	if config != nil {
+
+		var httpMethod string
+		if config.HttpMethod == "" {
+			httpMethod = "HEAD"
+		} else {
+			httpMethod = strings.TrimSpace(config.HttpMethod)
+		}
+
+		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),
+			HttpMethod:    httpMethod,
+		}
+	}
+	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 {
+		errors.LogWarning(ctx, "health check interval is too small, 10s is applied")
+		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,
+		dispatcher: dispatcher,
+		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() {
+		tags, err := selector()
+		if err != nil {
+			errors.LogWarning(h.ctx, "error select outbounds for initial health check: ", err)
+			return
+		}
+		h.Check(tags)
+	}()
+
+	go func() {
+		for {
+			go func() {
+				tags, err := selector()
+				if err != nil {
+					errors.LogWarning(h.ctx, "error select outbounds for scheduled health check: ", err)
+					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
+	}
+	errors.LogInfo(h.ctx, "perform one-time health check for tags ", tags)
+	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.dispatcher,
+			h.Settings.Destination,
+			h.Settings.Timeout,
+			handler,
+		)
+		for i := 0; i < rounds; i++ {
+			delay := time.Duration(0)
+			if duration > 0 {
+				delay = time.Duration(dice.RollInt63n(int64(duration)))
+			}
+			time.AfterFunc(delay, func() {
+				errors.LogDebug(h.ctx, "checking ", handler)
+				delay, err := client.MeasureDelay(h.Settings.HttpMethod)
+				if err == nil {
+					ch <- &rtt{
+						handler: handler,
+						value:   delay,
+					}
+					return
+				}
+				if !h.checkConnectivity() {
+					errors.LogWarning(h.ctx, "network is down")
+					ch <- &rtt{
+						handler: handler,
+						value:   0,
+					}
+					return
+				}
+				errors.LogWarning(h.ctx, fmt.Sprintf(
+					"error ping %s with %s: %s",
+					h.Settings.Destination,
+					handler,
+					err,
+				))
+				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 later ones
+		// 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(h.Settings.HttpMethod); err != nil {
+		return false
+	}
+	return true
+}

app/observatory/burst/healthping_result.go

@@ -0,0 +1,143 @@
+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
+}

app/observatory/burst/healthping_result_test.go

@@ -0,0 +1,106 @@
+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)
+	}
+}

app/observatory/burst/ping.go

@@ -0,0 +1,79 @@
+package burst
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/features/routing"
+	"github.com/xtls/xray-core/transport/internet/tagged"
+)
+
+type pingClient struct {
+	destination string
+	httpClient  *http.Client
+}
+
+func newPingClient(ctx context.Context, dispatcher routing.Dispatcher, destination string, timeout time.Duration, handler string) *pingClient {
+	return &pingClient{
+		destination: destination,
+		httpClient:  newHTTPClient(ctx, dispatcher, handler, timeout),
+	}
+}
+
+func newDirectPingClient(destination string, timeout time.Duration) *pingClient {
+	return &pingClient{
+		destination: destination,
+		httpClient:  &http.Client{Timeout: timeout},
+	}
+}
+
+func newHTTPClient(ctxv context.Context, dispatcher routing.Dispatcher, 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, dispatcher, 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(httpMethod string) (time.Duration, error) {
+	if s.httpClient == nil {
+		panic("pingClient not initialized")
+	}
+
+	req, err := http.NewRequest(httpMethod, s.destination, nil)
+	if err != nil {
+		return rttFailed, err
+	}
+
+	start := time.Now()
+	resp, err := s.httpClient.Do(req)
+	if err != nil {
+		return rttFailed, err
+	}
+	if httpMethod == http.MethodGet {
+		_, err = io.Copy(io.Discard, resp.Body)
+		if err != nil {
+			return rttFailed, err
+		}
+	}
+	resp.Body.Close()
+
+	return time.Since(start), nil
+}

app/observatory/command/command.go

@@ -1,6 +1,3 @@
-//go:build !confonly
-// +build !confonly
-
 package command
 
 import (
@@ -41,7 +38,7 @@ func init() {
 		sv := &service{v: s}
 		err := s.RequireFeatures(func(Observatory extension.Observatory) {
 			sv.observatory = Observatory
-		})
+		}, false)
 		if err != nil {
 			return nil, err
 		}

app/observatory/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/observatory/command/command.proto
 
 package command
@@ -29,11 +29,9 @@ type GetOutboundStatusRequest struct {
 
 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)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetOutboundStatusRequest) String() string {
@@ -44,7 +42,7 @@ func (*GetOutboundStatusRequest) ProtoMessage() {}
 
 func (x *GetOutboundStatusRequest) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -69,11 +67,9 @@ type GetOutboundStatusResponse struct {
 
 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)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *GetOutboundStatusResponse) String() string {
@@ -84,7 +80,7 @@ func (*GetOutboundStatusResponse) ProtoMessage() {}
 
 func (x *GetOutboundStatusResponse) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -114,11 +110,9 @@ type Config struct {
 
 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)
-	}
+	mi := &file_app_observatory_command_command_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -129,7 +123,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_command_command_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -197,7 +191,7 @@ func file_app_observatory_command_command_proto_rawDescGZIP() []byte {
 }
 
 var file_app_observatory_command_command_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_app_observatory_command_command_proto_goTypes = []interface{}{
+var file_app_observatory_command_command_proto_goTypes = []any{
 	(*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
@@ -219,44 +213,6 @@ 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{

app/observatory/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.2.0
-// - protoc             v3.21.12
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.28.2
 // source: app/observatory/command/command.proto
 
 package command
@@ -15,8 +15,12 @@ import (
 
 // 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
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	ObservatoryService_GetOutboundStatus_FullMethodName = "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus"
+)
 
 // ObservatoryServiceClient is the client API for ObservatoryService service.
 //
@@ -34,8 +38,9 @@ func NewObservatoryServiceClient(cc grpc.ClientConnInterface) ObservatoryService
 }
 
 func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *GetOutboundStatusRequest, opts ...grpc.CallOption) (*GetOutboundStatusResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(GetOutboundStatusResponse)
-	err := c.cc.Invoke(ctx, "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus", in, out, opts...)
+	err := c.cc.Invoke(ctx, ObservatoryService_GetOutboundStatus_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -44,20 +49,24 @@ func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *Ge
 
 // ObservatoryServiceServer is the server API for ObservatoryService service.
 // All implementations must embed UnimplementedObservatoryServiceServer
-// for forward compatibility
+// 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 {
-}
+// UnimplementedObservatoryServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedObservatoryServiceServer struct{}
 
 func (UnimplementedObservatoryServiceServer) GetOutboundStatus(context.Context, *GetOutboundStatusRequest) (*GetOutboundStatusResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetOutboundStatus not implemented")
 }
 func (UnimplementedObservatoryServiceServer) mustEmbedUnimplementedObservatoryServiceServer() {}
+func (UnimplementedObservatoryServiceServer) testEmbeddedByValue()                            {}
 
 // 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
@@ -67,6 +76,13 @@ type UnsafeObservatoryServiceServer interface {
 }
 
 func RegisterObservatoryServiceServer(s grpc.ServiceRegistrar, srv ObservatoryServiceServer) {
+	// If the following call pancis, it indicates UnimplementedObservatoryServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&ObservatoryService_ServiceDesc, srv)
 }
 
@@ -80,7 +96,7 @@ func _ObservatoryService_GetOutboundStatus_Handler(srv interface{}, ctx context.
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus",
+		FullMethod: ObservatoryService_GetOutboundStatus_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(ObservatoryServiceServer).GetOutboundStatus(ctx, req.(*GetOutboundStatusRequest))

app/observatory/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/observatory/config.proto
 
 package observatory
@@ -30,11 +30,9 @@ type ObservationResult struct {
 
 func (x *ObservationResult) Reset() {
 	*x = ObservationResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ObservationResult) String() string {
@@ -45,7 +43,7 @@ func (*ObservationResult) ProtoMessage() {}
 
 func (x *ObservationResult) ProtoReflect() protoreflect.Message {
 	mi := &file_app_observatory_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -67,6 +65,91 @@ 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{}
+	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 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
@@ -90,16 +173,15 @@ type OutboundStatus struct {
 	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"`
+	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"`
 }
 
 func (x *OutboundStatus) Reset() {
 	*x = OutboundStatus{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *OutboundStatus) String() string {
@@ -109,8 +191,8 @@ func (x *OutboundStatus) String() string {
 func (*OutboundStatus) ProtoMessage() {}
 
 func (x *OutboundStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_observatory_config_proto_msgTypes[2]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -122,7 +204,7 @@ 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{1}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *OutboundStatus) GetAlive() bool {
@@ -167,6 +249,13 @@ 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
@@ -186,11 +275,9 @@ type ProbeResult struct {
 
 func (x *ProbeResult) Reset() {
 	*x = ProbeResult{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ProbeResult) String() string {
@@ -200,8 +287,8 @@ func (x *ProbeResult) String() string {
 func (*ProbeResult) ProtoMessage() {}
 
 func (x *ProbeResult) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_observatory_config_proto_msgTypes[3]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -213,7 +300,7 @@ 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{2}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *ProbeResult) GetAlive() bool {
@@ -249,11 +336,9 @@ type Intensity struct {
 
 func (x *Intensity) Reset() {
 	*x = Intensity{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Intensity) String() string {
@@ -263,8 +348,8 @@ func (x *Intensity) String() string {
 func (*Intensity) ProtoMessage() {}
 
 func (x *Intensity) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_observatory_config_proto_msgTypes[4]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -276,7 +361,7 @@ 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{3}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *Intensity) GetProbeInterval() uint32 {
@@ -300,11 +385,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_observatory_config_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_observatory_config_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -314,8 +397,8 @@ func (x *Config) String() string {
 func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
-	mi := &file_app_observatory_config_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	mi := &file_app_observatory_config_proto_msgTypes[5]
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -327,7 +410,7 @@ 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{4}
+	return file_app_observatory_config_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Config) GetSubjectSelector() []string {
@@ -370,47 +453,62 @@ 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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+	0x65, 0x65, 0x6e, 0x54, 0x69, 0x6d, 0x65, 0x12, 0x22, 0x0a, 0x0d, 0x6c, 0x61, 0x73, 0x74, 0x5f,
+	0x74, 0x72, 0x79, 0x5f, 0x74, 0x69, 0x6d, 0x65, 0x18, 0x06, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0b,
+	0x6c, 0x61, 0x73, 0x74, 0x54, 0x72, 0x79, 0x54, 0x69, 0x6d, 0x65, 0x12, 0x57, 0x0a, 0x0b, 0x68,
+	0x65, 0x61, 0x6c, 0x74, 0x68, 0x5f, 0x70, 0x69, 0x6e, 0x67, 0x18, 0x07, 0x20, 0x01, 0x28, 0x0b,
+	0x32, 0x36, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72, 0x65, 0x2e, 0x61, 0x70, 0x70,
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+	0x6c, 0x74, 0x68, 0x50, 0x69, 0x6e, 0x67, 0x4d, 0x65, 0x61, 0x73, 0x75, 0x72, 0x65, 0x6d, 0x65,
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+	0x50, 0x69, 0x6e, 0x67, 0x22, 0x65, 0x0a, 0x0b, 0x50, 0x72, 0x6f, 0x62, 0x65, 0x52, 0x65, 0x73,
+	0x75, 0x6c, 0x74, 0x12, 0x14, 0x0a, 0x05, 0x61, 0x6c, 0x69, 0x76, 0x65, 0x18, 0x01, 0x20, 0x01,
+	0x28, 0x08, 0x52, 0x05, 0x61, 0x6c, 0x69, 0x76, 0x65, 0x12, 0x14, 0x0a, 0x05, 0x64, 0x65, 0x6c,
+	0x61, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x05, 0x64, 0x65, 0x6c, 0x61, 0x79, 0x12,
+	0x2a, 0x0a, 0x11, 0x6c, 0x61, 0x73, 0x74, 0x5f, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x72, 0x65,
+	0x61, 0x73, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0f, 0x6c, 0x61, 0x73, 0x74,
+	0x45, 0x72, 0x72, 0x6f, 0x72, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x22, 0x32, 0x0a, 0x09, 0x49,
+	0x6e, 0x74, 0x65, 0x6e, 0x73, 0x69, 0x74, 0x79, 0x12, 0x25, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x62,
+	0x65, 0x5f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d,
+	0x52, 0x0d, 0x70, 0x72, 0x6f, 0x62, 0x65, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x22,
+	0xa6, 0x01, 0x0a, 0x06, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x29, 0x0a, 0x10, 0x73, 0x75,
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+	0x20, 0x03, 0x28, 0x09, 0x52, 0x0f, 0x73, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x53, 0x65, 0x6c,
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+	0x72, 0x6c, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x70, 0x72, 0x6f, 0x62, 0x65, 0x55,
+	0x72, 0x6c, 0x12, 0x25, 0x0a, 0x0e, 0x70, 0x72, 0x6f, 0x62, 0x65, 0x5f, 0x69, 0x6e, 0x74, 0x65,
+	0x72, 0x76, 0x61, 0x6c, 0x18, 0x04, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x62,
+	0x65, 0x49, 0x6e, 0x74, 0x65, 0x72, 0x76, 0x61, 0x6c, 0x12, 0x2d, 0x0a, 0x12, 0x65, 0x6e, 0x61,
+	0x62, 0x6c, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x18,
+	0x05, 0x20, 0x01, 0x28, 0x08, 0x52, 0x11, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x43, 0x6f, 0x6e,
+	0x63, 0x75, 0x72, 0x72, 0x65, 0x6e, 0x63, 0x79, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e,
+	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61,
+	0x74, 0x6f, 0x72, 0x79, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72,
+	0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x6f, 0x62, 0x73, 0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72,
+	0x79, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x4f, 0x62, 0x73,
+	0x65, 0x72, 0x76, 0x61, 0x74, 0x6f, 0x72, 0x79, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -425,21 +523,23 @@ 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, 5)
-var file_app_observatory_config_proto_goTypes = []interface{}{
-	(*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_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_app_observatory_config_proto_goTypes = []any{
+	(*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
 }
 var file_app_observatory_config_proto_depIdxs = []int32{
-	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
+	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
 }
 
 func init() { file_app_observatory_config_proto_init() }
@@ -447,75 +547,13 @@ func file_app_observatory_config_proto_init() {
 	if File_app_observatory_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_observatory_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ObservationResult); 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[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OutboundStatus); 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.(*ProbeResult); 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[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Intensity); 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[4].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_config_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   5,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

app/observatory/config.proto

@@ -10,6 +10,15 @@ 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
@@ -36,6 +45,8 @@ message OutboundStatus{
    @Type id.outboundTag
 */
   int64 last_try_time = 6;
+
+  HealthPingMeasurementResult health_ping = 7;
 }
 
 message ProbeResult{

app/observatory/errors.generated.go

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

app/observatory/explainErrors.go

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

app/observatory/observatory.go

@@ -1,3 +1 @@
 package observatory
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/observatory/observer.go

@@ -9,8 +9,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
 	v2net "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/common/signal/done"
@@ -18,7 +18,9 @@ import (
 	"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/features/routing"
 	"github.com/xtls/xray-core/transport/internet/tagged"
+	"google.golang.org/protobuf/proto"
 )
 
 type Observer struct {
@@ -30,7 +32,8 @@ type Observer struct {
 
 	finished *done.Instance
 
-	ohm outbound.Manager
+	ohm        outbound.Manager
+	dispatcher routing.Dispatcher
 }
 
 func (o *Observer) GetObservation(ctx context.Context) (proto.Message, error) {
@@ -60,7 +63,7 @@ func (o *Observer) background() {
 	for !o.finished.Done() {
 		hs, ok := o.ohm.(outbound.HandlerSelector)
 		if !ok {
-			newError("outbound.Manager is not a HandlerSelector").WriteToLog()
+			errors.LogInfo(o.ctx, "outbound.Manager is not a HandlerSelector")
 			return
 		}
 
@@ -127,18 +130,18 @@ func (o *Observer) probe(outbound string) ProbeResult {
 				// MUST use Xray's built in context system
 				dest, err := v2net.ParseDestination(network + ":" + addr)
 				if err != nil {
-					return newError("cannot understand address").Base(err)
+					return errors.New("cannot understand address").Base(err)
 				}
 				trackedCtx := session.TrackedConnectionError(o.ctx, errorCollectorForRequest)
-				conn, err := tagged.Dialer(trackedCtx, dest, outbound)
+				conn, err := tagged.Dialer(trackedCtx, o.dispatcher, dest, outbound)
 				if err != nil {
-					return newError("cannot dial remote address ", dest).Base(err)
+					return errors.New("cannot dial remote address ", dest).Base(err)
 				}
 				connection = conn
 				return nil
 			})
 			if taskErr != nil {
-				return nil, newError("cannot finish connection").Base(taskErr)
+				return nil, errors.New("cannot finish connection").Base(taskErr)
 			}
 			return connection, nil
 		},
@@ -161,7 +164,7 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		}
 		response, err := httpClient.Get(probeURL)
 		if err != nil {
-			return newError("outbound failed to relay connection").Base(err)
+			return errors.New("outbound failed to relay connection").Base(err)
 		}
 		if response.Body != nil {
 			response.Body.Close()
@@ -171,15 +174,11 @@ func (o *Observer) probe(outbound string) ProbeResult {
 		return nil
 	})
 	if err != nil {
-		fullerr := newError("underlying connection failed").Base(errorCollectorForRequest.UnderlyingError())
-		fullerr = newError("with outbound handler report").Base(fullerr)
-		fullerr = newError("GET request failed:", err).Base(fullerr)
-		fullerr = newError("the outbound ", outbound, " is dead:").Base(fullerr)
-		fullerr = fullerr.AtInfo()
-		fullerr.WriteToLog()
-		return ProbeResult{Alive: false, LastErrorReason: fullerr.Error()}
+		var errorMessage = "the outbound " + outbound + " is dead: GET request failed:" + err.Error() + "with outbound handler report underlying connection failed"
+		errors.LogInfoInner(o.ctx, errorCollectorForRequest.UnderlyingError(), errorMessage)
+		return ProbeResult{Alive: false, LastErrorReason: errorMessage}
 	}
-	newError("the outbound ", outbound, " is alive:", GETTime.Seconds()).AtInfo().WriteToLog()
+	errors.LogInfo(o.ctx, "the outbound ", outbound, " is alive:", GETTime.Seconds())
 	return ProbeResult{Alive: true, Delay: GETTime.Milliseconds()}
 }
 
@@ -218,16 +217,19 @@ func (o *Observer) findStatusLocationLockHolderOnly(outbound string) int {
 
 func New(ctx context.Context, config *Config) (*Observer, error) {
 	var outboundManager outbound.Manager
-	err := core.RequireFeatures(ctx, func(om outbound.Manager) {
+	var dispatcher routing.Dispatcher
+	err := core.RequireFeatures(ctx, func(om outbound.Manager, rd routing.Dispatcher) {
 		outboundManager = om
+		dispatcher = rd
 	})
 	if err != nil {
-		return nil, newError("Cannot get depended features").Base(err)
+		return nil, errors.New("Cannot get depended features").Base(err)
 	}
 	return &Observer{
-		config: config,
-		ctx:    ctx,
-		ohm:    outboundManager,
+		config:     config,
+		ctx:        ctx,
+		ohm:        outboundManager,
+		dispatcher: dispatcher,
 	}, nil
 }
 

app/policy/config.go

@@ -73,6 +73,7 @@ func (p *Policy) ToCorePolicy() policy.Session {
 	if p.Stats != nil {
 		cp.Stats.UserUplink = p.Stats.UserUplink
 		cp.Stats.UserDownlink = p.Stats.UserDownlink
+		cp.Stats.UserOnline = p.Stats.UserOnline
 	}
 	if p.Buffer != nil {
 		cp.Buffer.PerConnection = p.Buffer.Connection

app/policy/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/policy/config.proto
 
 package policy
@@ -30,11 +30,9 @@ type Second struct {
 
 func (x *Second) Reset() {
 	*x = Second{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Second) String() string {
@@ -45,7 +43,7 @@ func (*Second) ProtoMessage() {}
 
 func (x *Second) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -79,11 +77,9 @@ type Policy struct {
 
 func (x *Policy) Reset() {
 	*x = Policy{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy) String() string {
@@ -94,7 +90,7 @@ func (*Policy) ProtoMessage() {}
 
 func (x *Policy) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -140,11 +136,9 @@ type SystemPolicy struct {
 
 func (x *SystemPolicy) Reset() {
 	*x = SystemPolicy{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SystemPolicy) String() string {
@@ -155,7 +149,7 @@ func (*SystemPolicy) ProtoMessage() {}
 
 func (x *SystemPolicy) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -188,11 +182,9 @@ type Config struct {
 
 func (x *Config) Reset() {
 	*x = Config{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Config) String() string {
@@ -203,7 +195,7 @@ func (*Config) ProtoMessage() {}
 
 func (x *Config) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -246,11 +238,9 @@ type Policy_Timeout struct {
 
 func (x *Policy_Timeout) Reset() {
 	*x = Policy_Timeout{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Timeout) String() string {
@@ -261,7 +251,7 @@ func (*Policy_Timeout) ProtoMessage() {}
 
 func (x *Policy_Timeout) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -311,15 +301,14 @@ type Policy_Stats struct {
 
 	UserUplink   bool `protobuf:"varint,1,opt,name=user_uplink,json=userUplink,proto3" json:"user_uplink,omitempty"`
 	UserDownlink bool `protobuf:"varint,2,opt,name=user_downlink,json=userDownlink,proto3" json:"user_downlink,omitempty"`
+	UserOnline   bool `protobuf:"varint,3,opt,name=user_online,json=userOnline,proto3" json:"user_online,omitempty"`
 }
 
 func (x *Policy_Stats) Reset() {
 	*x = Policy_Stats{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Stats) String() string {
@@ -330,7 +319,7 @@ func (*Policy_Stats) ProtoMessage() {}
 
 func (x *Policy_Stats) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -359,6 +348,13 @@ func (x *Policy_Stats) GetUserDownlink() bool {
 	return false
 }
 
+func (x *Policy_Stats) GetUserOnline() bool {
+	if x != nil {
+		return x.UserOnline
+	}
+	return false
+}
+
 type Policy_Buffer struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -370,11 +366,9 @@ type Policy_Buffer struct {
 
 func (x *Policy_Buffer) Reset() {
 	*x = Policy_Buffer{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *Policy_Buffer) String() string {
@@ -385,7 +379,7 @@ func (*Policy_Buffer) ProtoMessage() {}
 
 func (x *Policy_Buffer) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -420,11 +414,9 @@ type SystemPolicy_Stats struct {
 
 func (x *SystemPolicy_Stats) Reset() {
 	*x = SystemPolicy_Stats{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_policy_config_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_policy_config_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SystemPolicy_Stats) String() string {
@@ -435,7 +427,7 @@ func (*SystemPolicy_Stats) ProtoMessage() {}
 
 func (x *SystemPolicy_Stats) ProtoReflect() protoreflect.Message {
 	mi := &file_app_policy_config_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -485,7 +477,7 @@ var file_app_policy_config_proto_rawDesc = []byte{
 	0x66, 0x69, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0f, 0x78, 0x72, 0x61, 0x79, 0x2e,
 	0x61, 0x70, 0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x22, 0x1e, 0x0a, 0x06, 0x53, 0x65,
 	0x63, 0x6f, 0x6e, 0x64, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x01, 0x20,
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 	0x6f, 0x6c, 0x69, 0x63, 0x79, 0x12, 0x39, 0x0a, 0x07, 0x74, 0x69, 0x6d, 0x65, 0x6f, 0x75, 0x74,
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@@ -512,49 +504,51 @@ var file_app_policy_config_proto_rawDesc = []byte{
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+	0x50, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x52, 0x06, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x1a, 0x51,
+	0x0a, 0x0a, 0x4c, 0x65, 0x76, 0x65, 0x6c, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03,
+	0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x2d,
+	0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x17, 0x2e,
+	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x2e,
+	0x50, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38,
+	0x01, 0x42, 0x4f, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70,
+	0x70, 0x2e, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79, 0x50, 0x01, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79,
+	0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x70, 0x6f, 0x6c, 0x69, 0x63, 0x79,
+	0xaa, 0x02, 0x0f, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x50, 0x6f, 0x6c, 0x69,
+	0x63, 0x79, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -570,7 +564,7 @@ func file_app_policy_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_policy_config_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
-var file_app_policy_config_proto_goTypes = []interface{}{
+var file_app_policy_config_proto_goTypes = []any{
 	(*Second)(nil),             // 0: xray.app.policy.Second
 	(*Policy)(nil),             // 1: xray.app.policy.Policy
 	(*SystemPolicy)(nil),       // 2: xray.app.policy.SystemPolicy
@@ -605,104 +599,6 @@ func file_app_policy_config_proto_init() {
 	if File_app_policy_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_policy_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Second); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SystemPolicy); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[3].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_policy_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Timeout); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Stats); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Policy_Buffer); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_policy_config_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SystemPolicy_Stats); 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{

app/policy/config.proto

@@ -22,6 +22,7 @@ message Policy {
   message Stats {
     bool user_uplink = 1;
     bool user_downlink = 2;
+    bool user_online = 3;
   }
 
   message Buffer {

app/policy/errors.generated.go

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

app/policy/policy.go

@@ -1,4 +1,2 @@
 // Package policy is an implementation of policy.Manager feature.
 package policy
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/proxyman/command/command.go

@@ -3,7 +3,10 @@ package command
 import (
 	"context"
 
+	"github.com/xtls/xray-core/app/commander"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 	"github.com/xtls/xray-core/features/outbound"
@@ -26,7 +29,7 @@ type OutboundOperation interface {
 func getInbound(handler inbound.Handler) (proxy.Inbound, error) {
 	gi, ok := handler.(proxy.GetInbound)
 	if !ok {
-		return nil, newError("can't get inbound proxy from handler.")
+		return nil, errors.New("can't get inbound proxy from handler.")
 	}
 	return gi.GetInbound(), nil
 }
@@ -39,11 +42,11 @@ func (op *AddUserOperation) ApplyInbound(ctx context.Context, handler inbound.Ha
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not a UserManager")
+		return errors.New("proxy is not a UserManager")
 	}
 	mUser, err := op.User.ToMemoryUser()
 	if err != nil {
-		return newError("failed to parse user").Base(err)
+		return errors.New("failed to parse user").Base(err)
 	}
 	return um.AddUser(ctx, mUser)
 }
@@ -56,7 +59,7 @@ func (op *RemoveUserOperation) ApplyInbound(ctx context.Context, handler inbound
 	}
 	um, ok := p.(proxy.UserManager)
 	if !ok {
-		return newError("proxy is not a UserManager")
+		return errors.New("proxy is not a UserManager")
 	}
 	return um.RemoveUser(ctx, op.Email)
 }
@@ -82,21 +85,83 @@ func (s *handlerServer) RemoveInbound(ctx context.Context, request *RemoveInboun
 func (s *handlerServer) AlterInbound(ctx context.Context, request *AlterInboundRequest) (*AlterInboundResponse, error) {
 	rawOperation, err := request.Operation.GetInstance()
 	if err != nil {
-		return nil, newError("unknown operation").Base(err)
+		return nil, errors.New("unknown operation").Base(err)
 	}
 	operation, ok := rawOperation.(InboundOperation)
 	if !ok {
-		return nil, newError("not an inbound operation")
+		return nil, errors.New("not an inbound operation")
 	}
 
 	handler, err := s.ihm.GetHandler(ctx, request.Tag)
 	if err != nil {
-		return nil, newError("failed to get handler: ", request.Tag).Base(err)
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
 	}
 
 	return &AlterInboundResponse{}, operation.ApplyInbound(ctx, handler)
 }
 
+func (s *handlerServer) ListInbounds(ctx context.Context, request *ListInboundsRequest) (*ListInboundsResponse, error) {
+	handlers := s.ihm.ListHandlers(ctx)
+	response := &ListInboundsResponse{}
+	if request.GetIsOnlyTags() {
+		for _, handler := range handlers {
+			response.Inbounds = append(response.Inbounds, &core.InboundHandlerConfig{
+				Tag: handler.Tag(),
+			})
+		}
+	} else {
+		for _, handler := range handlers {
+			response.Inbounds = append(response.Inbounds, &core.InboundHandlerConfig{
+				Tag:              handler.Tag(),
+				ReceiverSettings: handler.ReceiverSettings(),
+				ProxySettings:    handler.ProxySettings(),
+			})
+		}
+	}
+
+	return response, nil
+}
+
+func (s *handlerServer) GetInboundUsers(ctx context.Context, request *GetInboundUserRequest) (*GetInboundUserResponse, error) {
+	handler, err := s.ihm.GetHandler(ctx, request.Tag)
+	if err != nil {
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
+	}
+	p, err := getInbound(handler)
+	if err != nil {
+		return nil, err
+	}
+	um, ok := p.(proxy.UserManager)
+	if !ok {
+		return nil, errors.New("proxy is not a UserManager")
+	}
+	if len(request.Email) > 0 {
+		return &GetInboundUserResponse{Users: []*protocol.User{protocol.ToProtoUser(um.GetUser(ctx, request.Email))}}, nil
+	}
+	var result = make([]*protocol.User, 0, 100)
+	users := um.GetUsers(ctx)
+	for _, u := range users {
+		result = append(result, protocol.ToProtoUser(u))
+	}
+	return &GetInboundUserResponse{Users: result}, nil
+}
+
+func (s *handlerServer) GetInboundUsersCount(ctx context.Context, request *GetInboundUserRequest) (*GetInboundUsersCountResponse, error) {
+	handler, err := s.ihm.GetHandler(ctx, request.Tag)
+	if err != nil {
+		return nil, errors.New("failed to get handler: ", request.Tag).Base(err)
+	}
+	p, err := getInbound(handler)
+	if err != nil {
+		return nil, err
+	}
+	um, ok := p.(proxy.UserManager)
+	if !ok {
+		return nil, errors.New("proxy is not a UserManager")
+	}
+	return &GetInboundUsersCountResponse{Count: um.GetUsersCount(ctx)}, nil
+}
+
 func (s *handlerServer) AddOutbound(ctx context.Context, request *AddOutboundRequest) (*AddOutboundResponse, error) {
 	if err := core.AddOutboundHandler(s.s, request.Outbound); err != nil {
 		return nil, err
@@ -111,17 +176,34 @@ func (s *handlerServer) RemoveOutbound(ctx context.Context, request *RemoveOutbo
 func (s *handlerServer) AlterOutbound(ctx context.Context, request *AlterOutboundRequest) (*AlterOutboundResponse, error) {
 	rawOperation, err := request.Operation.GetInstance()
 	if err != nil {
-		return nil, newError("unknown operation").Base(err)
+		return nil, errors.New("unknown operation").Base(err)
 	}
 	operation, ok := rawOperation.(OutboundOperation)
 	if !ok {
-		return nil, newError("not an outbound operation")
+		return nil, errors.New("not an outbound operation")
 	}
 
 	handler := s.ohm.GetHandler(request.Tag)
 	return &AlterOutboundResponse{}, operation.ApplyOutbound(ctx, handler)
 }
 
+func (s *handlerServer) ListOutbounds(ctx context.Context, request *ListOutboundsRequest) (*ListOutboundsResponse, error) {
+	handlers := s.ohm.ListHandlers(ctx)
+	response := &ListOutboundsResponse{}
+	for _, handler := range handlers {
+		// Ignore gRPC outbound
+		if _, ok := handler.(*commander.Outbound); ok {
+			continue
+		}
+		response.Outbounds = append(response.Outbounds, &core.OutboundHandlerConfig{
+			Tag:            handler.Tag(),
+			SenderSettings: handler.SenderSettings(),
+			ProxySettings:  handler.ProxySettings(),
+		})
+	}
+	return response, nil
+}
+
 func (s *handlerServer) mustEmbedUnimplementedHandlerServiceServer() {}
 
 type service struct {
@@ -135,7 +217,7 @@ func (s *service) Register(server *grpc.Server) {
 	common.Must(s.v.RequireFeatures(func(im inbound.Manager, om outbound.Manager) {
 		hs.ihm = im
 		hs.ohm = om
-	}))
+	}, false))
 	RegisterHandlerServiceServer(server, hs)
 
 	// For compatibility purposes

app/proxyman/command/command.proto

@@ -37,6 +37,27 @@ message AlterInboundRequest {
 
 message AlterInboundResponse {}
 
+message ListInboundsRequest {
+  bool isOnlyTags = 1;
+}
+
+message ListInboundsResponse {
+  repeated core.InboundHandlerConfig inbounds = 1;
+}
+
+message GetInboundUserRequest {
+  string tag = 1;
+  string email = 2;
+}
+
+message GetInboundUserResponse {
+  repeated xray.common.protocol.User users = 1;
+}
+
+message GetInboundUsersCountResponse {
+  int64 count = 1;
+}
+
 message AddOutboundRequest {
   core.OutboundHandlerConfig outbound = 1;
 }
@@ -56,6 +77,12 @@ message AlterOutboundRequest {
 
 message AlterOutboundResponse {}
 
+message ListOutboundsRequest {}
+
+message ListOutboundsResponse {
+  repeated core.OutboundHandlerConfig outbounds = 1;
+}
+
 service HandlerService {
   rpc AddInbound(AddInboundRequest) returns (AddInboundResponse) {}
 
@@ -63,11 +90,19 @@ service HandlerService {
 
   rpc AlterInbound(AlterInboundRequest) returns (AlterInboundResponse) {}
 
+  rpc ListInbounds(ListInboundsRequest) returns (ListInboundsResponse) {}
+
+  rpc GetInboundUsers(GetInboundUserRequest) returns (GetInboundUserResponse) {}
+
+  rpc GetInboundUsersCount(GetInboundUserRequest) returns (GetInboundUsersCountResponse) {}
+
   rpc AddOutbound(AddOutboundRequest) returns (AddOutboundResponse) {}
 
   rpc RemoveOutbound(RemoveOutboundRequest) returns (RemoveOutboundResponse) {}
 
   rpc AlterOutbound(AlterOutboundRequest) returns (AlterOutboundResponse) {}
+
+  rpc ListOutbounds(ListOutboundsRequest) returns (ListOutboundsResponse) {}
 }
 
 message Config {}

app/proxyman/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.2.0
-// - protoc             v3.21.12
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.28.2
 // source: app/proxyman/command/command.proto
 
 package command
@@ -15,8 +15,21 @@ import (
 
 // 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
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+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_ListInbounds_FullMethodName         = "/xray.app.proxyman.command.HandlerService/ListInbounds"
+	HandlerService_GetInboundUsers_FullMethodName      = "/xray.app.proxyman.command.HandlerService/GetInboundUsers"
+	HandlerService_GetInboundUsersCount_FullMethodName = "/xray.app.proxyman.command.HandlerService/GetInboundUsersCount"
+	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"
+	HandlerService_ListOutbounds_FullMethodName        = "/xray.app.proxyman.command.HandlerService/ListOutbounds"
+)
 
 // HandlerServiceClient is the client API for HandlerService service.
 //
@@ -25,9 +38,13 @@ type HandlerServiceClient interface {
 	AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error)
 	RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error)
 	AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error)
+	ListInbounds(ctx context.Context, in *ListInboundsRequest, opts ...grpc.CallOption) (*ListInboundsResponse, error)
+	GetInboundUsers(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUserResponse, error)
+	GetInboundUsersCount(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUsersCountResponse, error)
 	AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error)
 	RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error)
 	AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error)
+	ListOutbounds(ctx context.Context, in *ListOutboundsRequest, opts ...grpc.CallOption) (*ListOutboundsResponse, error)
 }
 
 type handlerServiceClient struct {
@@ -39,8 +56,9 @@ func NewHandlerServiceClient(cc grpc.ClientConnInterface) HandlerServiceClient {
 }
 
 func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AddInboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddInbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AddInbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -48,8 +66,9 @@ func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundReq
 }
 
 func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RemoveInboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveInbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_RemoveInbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -57,8 +76,39 @@ func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInbo
 }
 
 func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AlterInboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterInbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AlterInbound_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) ListInbounds(ctx context.Context, in *ListInboundsRequest, opts ...grpc.CallOption) (*ListInboundsResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(ListInboundsResponse)
+	err := c.cc.Invoke(ctx, HandlerService_ListInbounds_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) GetInboundUsers(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUserResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetInboundUserResponse)
+	err := c.cc.Invoke(ctx, HandlerService_GetInboundUsers_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) GetInboundUsersCount(ctx context.Context, in *GetInboundUserRequest, opts ...grpc.CallOption) (*GetInboundUsersCountResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetInboundUsersCountResponse)
+	err := c.cc.Invoke(ctx, HandlerService_GetInboundUsersCount_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -66,8 +116,9 @@ func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboun
 }
 
 func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AddOutboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddOutbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AddOutbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -75,8 +126,9 @@ func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundR
 }
 
 func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(RemoveOutboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveOutbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_RemoveOutbound_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,8 +136,19 @@ func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOut
 }
 
 func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(AlterOutboundResponse)
-	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterOutbound", in, out, opts...)
+	err := c.cc.Invoke(ctx, HandlerService_AlterOutbound_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *handlerServiceClient) ListOutbounds(ctx context.Context, in *ListOutboundsRequest, opts ...grpc.CallOption) (*ListOutboundsResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(ListOutboundsResponse)
+	err := c.cc.Invoke(ctx, HandlerService_ListOutbounds_FullMethodName, in, out, cOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -94,20 +157,27 @@ func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutbo
 
 // HandlerServiceServer is the server API for HandlerService service.
 // All implementations must embed UnimplementedHandlerServiceServer
-// for forward compatibility
+// for forward compatibility.
 type HandlerServiceServer interface {
 	AddInbound(context.Context, *AddInboundRequest) (*AddInboundResponse, error)
 	RemoveInbound(context.Context, *RemoveInboundRequest) (*RemoveInboundResponse, error)
 	AlterInbound(context.Context, *AlterInboundRequest) (*AlterInboundResponse, error)
+	ListInbounds(context.Context, *ListInboundsRequest) (*ListInboundsResponse, error)
+	GetInboundUsers(context.Context, *GetInboundUserRequest) (*GetInboundUserResponse, error)
+	GetInboundUsersCount(context.Context, *GetInboundUserRequest) (*GetInboundUsersCountResponse, error)
 	AddOutbound(context.Context, *AddOutboundRequest) (*AddOutboundResponse, error)
 	RemoveOutbound(context.Context, *RemoveOutboundRequest) (*RemoveOutboundResponse, error)
 	AlterOutbound(context.Context, *AlterOutboundRequest) (*AlterOutboundResponse, error)
+	ListOutbounds(context.Context, *ListOutboundsRequest) (*ListOutboundsResponse, error)
 	mustEmbedUnimplementedHandlerServiceServer()
 }
 
-// UnimplementedHandlerServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedHandlerServiceServer struct {
-}
+// UnimplementedHandlerServiceServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedHandlerServiceServer struct{}
 
 func (UnimplementedHandlerServiceServer) AddInbound(context.Context, *AddInboundRequest) (*AddInboundResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddInbound not implemented")
@@ -118,6 +188,15 @@ func (UnimplementedHandlerServiceServer) RemoveInbound(context.Context, *RemoveI
 func (UnimplementedHandlerServiceServer) AlterInbound(context.Context, *AlterInboundRequest) (*AlterInboundResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AlterInbound not implemented")
 }
+func (UnimplementedHandlerServiceServer) ListInbounds(context.Context, *ListInboundsRequest) (*ListInboundsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ListInbounds not implemented")
+}
+func (UnimplementedHandlerServiceServer) GetInboundUsers(context.Context, *GetInboundUserRequest) (*GetInboundUserResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetInboundUsers not implemented")
+}
+func (UnimplementedHandlerServiceServer) GetInboundUsersCount(context.Context, *GetInboundUserRequest) (*GetInboundUsersCountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetInboundUsersCount not implemented")
+}
 func (UnimplementedHandlerServiceServer) AddOutbound(context.Context, *AddOutboundRequest) (*AddOutboundResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddOutbound not implemented")
 }
@@ -127,7 +206,11 @@ func (UnimplementedHandlerServiceServer) RemoveOutbound(context.Context, *Remove
 func (UnimplementedHandlerServiceServer) AlterOutbound(context.Context, *AlterOutboundRequest) (*AlterOutboundResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AlterOutbound not implemented")
 }
+func (UnimplementedHandlerServiceServer) ListOutbounds(context.Context, *ListOutboundsRequest) (*ListOutboundsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ListOutbounds not implemented")
+}
 func (UnimplementedHandlerServiceServer) mustEmbedUnimplementedHandlerServiceServer() {}
+func (UnimplementedHandlerServiceServer) testEmbeddedByValue()                        {}
 
 // UnsafeHandlerServiceServer may be embedded to opt out of forward compatibility for this service.
 // Use of this interface is not recommended, as added methods to HandlerServiceServer will
@@ -137,6 +220,13 @@ type UnsafeHandlerServiceServer interface {
 }
 
 func RegisterHandlerServiceServer(s grpc.ServiceRegistrar, srv HandlerServiceServer) {
+	// If the following call pancis, it indicates UnimplementedHandlerServiceServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
 	s.RegisterService(&HandlerService_ServiceDesc, srv)
 }
 
@@ -150,7 +240,7 @@ func _HandlerService_AddInbound_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/AddInbound",
+		FullMethod: HandlerService_AddInbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddInbound(ctx, req.(*AddInboundRequest))
@@ -168,7 +258,7 @@ func _HandlerService_RemoveInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveInbound",
+		FullMethod: HandlerService_RemoveInbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveInbound(ctx, req.(*RemoveInboundRequest))
@@ -186,7 +276,7 @@ func _HandlerService_AlterInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterInbound",
+		FullMethod: HandlerService_AlterInbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterInbound(ctx, req.(*AlterInboundRequest))
@@ -194,6 +284,60 @@ func _HandlerService_AlterInbound_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _HandlerService_ListInbounds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListInboundsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).ListInbounds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_ListInbounds_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).ListInbounds(ctx, req.(*ListInboundsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _HandlerService_GetInboundUsers_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetInboundUserRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).GetInboundUsers(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_GetInboundUsers_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).GetInboundUsers(ctx, req.(*GetInboundUserRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _HandlerService_GetInboundUsersCount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetInboundUserRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).GetInboundUsersCount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_GetInboundUsersCount_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).GetInboundUsersCount(ctx, req.(*GetInboundUserRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _HandlerService_AddOutbound_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(AddOutboundRequest)
 	if err := dec(in); err != nil {
@@ -204,7 +348,7 @@ func _HandlerService_AddOutbound_Handler(srv interface{}, ctx context.Context, d
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/AddOutbound",
+		FullMethod: HandlerService_AddOutbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddOutbound(ctx, req.(*AddOutboundRequest))
@@ -222,7 +366,7 @@ func _HandlerService_RemoveOutbound_Handler(srv interface{}, ctx context.Context
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveOutbound",
+		FullMethod: HandlerService_RemoveOutbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveOutbound(ctx, req.(*RemoveOutboundRequest))
@@ -240,7 +384,7 @@ func _HandlerService_AlterOutbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterOutbound",
+		FullMethod: HandlerService_AlterOutbound_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterOutbound(ctx, req.(*AlterOutboundRequest))
@@ -248,6 +392,24 @@ func _HandlerService_AlterOutbound_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _HandlerService_ListOutbounds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListOutboundsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HandlerServiceServer).ListOutbounds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: HandlerService_ListOutbounds_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HandlerServiceServer).ListOutbounds(ctx, req.(*ListOutboundsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // HandlerService_ServiceDesc is the grpc.ServiceDesc for HandlerService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -267,6 +429,18 @@ var HandlerService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "AlterInbound",
 			Handler:    _HandlerService_AlterInbound_Handler,
 		},
+		{
+			MethodName: "ListInbounds",
+			Handler:    _HandlerService_ListInbounds_Handler,
+		},
+		{
+			MethodName: "GetInboundUsers",
+			Handler:    _HandlerService_GetInboundUsers_Handler,
+		},
+		{
+			MethodName: "GetInboundUsersCount",
+			Handler:    _HandlerService_GetInboundUsersCount_Handler,
+		},
 		{
 			MethodName: "AddOutbound",
 			Handler:    _HandlerService_AddOutbound_Handler,
@@ -279,6 +453,10 @@ var HandlerService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "AlterOutbound",
 			Handler:    _HandlerService_AlterOutbound_Handler,
 		},
+		{
+			MethodName: "ListOutbounds",
+			Handler:    _HandlerService_ListOutbounds_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "app/proxyman/command/command.proto",

app/proxyman/command/doc.go

@@ -1,3 +1 @@
 package command
-
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen

app/proxyman/command/errors.generated.go

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

app/proxyman/config.go

@@ -19,21 +19,5 @@ func (c *ReceiverConfig) GetEffectiveSniffingSettings() *SniffingConfig {
 		return c.SniffingSettings
 	}
 
-	if len(c.DomainOverride) > 0 {
-		var p []string
-		for _, kd := range c.DomainOverride {
-			switch kd {
-			case KnownProtocols_HTTP:
-				p = append(p, "http")
-			case KnownProtocols_TLS:
-				p = append(p, "tls")
-			}
-		}
-		return &SniffingConfig{
-			Enabled:             true,
-			DestinationOverride: p,
-		}
-	}
-
 	return nil
 }

app/proxyman/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.12
+// 	protoc-gen-go v1.35.1
+// 	protoc        v5.28.2
 // source: app/proxyman/config.proto
 
 package proxyman
@@ -23,52 +23,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type KnownProtocols int32
-
-const (
-	KnownProtocols_HTTP KnownProtocols = 0
-	KnownProtocols_TLS  KnownProtocols = 1
-)
-
-// Enum value maps for KnownProtocols.
-var (
-	KnownProtocols_name = map[int32]string{
-		0: "HTTP",
-		1: "TLS",
-	}
-	KnownProtocols_value = map[string]int32{
-		"HTTP": 0,
-		"TLS":  1,
-	}
-)
-
-func (x KnownProtocols) Enum() *KnownProtocols {
-	p := new(KnownProtocols)
-	*p = x
-	return p
-}
-
-func (x KnownProtocols) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (KnownProtocols) Descriptor() protoreflect.EnumDescriptor {
-	return file_app_proxyman_config_proto_enumTypes[0].Descriptor()
-}
-
-func (KnownProtocols) Type() protoreflect.EnumType {
-	return &file_app_proxyman_config_proto_enumTypes[0]
-}
-
-func (x KnownProtocols) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use KnownProtocols.Descriptor instead.
-func (KnownProtocols) EnumDescriptor() ([]byte, []int) {
-	return file_app_proxyman_config_proto_rawDescGZIP(), []int{0}
-}
-
 type AllocationStrategy_Type int32
 
 const (
@@ -105,11 +59,11 @@ 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[0].Descriptor()
 }
 
 func (AllocationStrategy_Type) Type() protoreflect.EnumType {
-	return &file_app_proxyman_config_proto_enumTypes[1]
+	return &file_app_proxyman_config_proto_enumTypes[0]
 }
 
 func (x AllocationStrategy_Type) Number() protoreflect.EnumNumber {
@@ -129,11 +83,9 @@ type InboundConfig struct {
 
 func (x *InboundConfig) Reset() {
 	*x = InboundConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *InboundConfig) String() string {
@@ -144,7 +96,7 @@ func (*InboundConfig) ProtoMessage() {}
 
 func (x *InboundConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -175,11 +127,9 @@ type AllocationStrategy struct {
 
 func (x *AllocationStrategy) Reset() {
 	*x = AllocationStrategy{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AllocationStrategy) String() string {
@@ -190,7 +140,7 @@ func (*AllocationStrategy) ProtoMessage() {}
 
 func (x *AllocationStrategy) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -246,11 +196,9 @@ type SniffingConfig struct {
 
 func (x *SniffingConfig) Reset() {
 	*x = SniffingConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SniffingConfig) String() string {
@@ -261,7 +209,7 @@ func (*SniffingConfig) ProtoMessage() {}
 
 func (x *SniffingConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -323,21 +271,14 @@ type ReceiverConfig struct {
 	AllocationStrategy         *AllocationStrategy    `protobuf:"bytes,3,opt,name=allocation_strategy,json=allocationStrategy,proto3" json:"allocation_strategy,omitempty"`
 	StreamSettings             *internet.StreamConfig `protobuf:"bytes,4,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
 	ReceiveOriginalDestination bool                   `protobuf:"varint,5,opt,name=receive_original_destination,json=receiveOriginalDestination,proto3" json:"receive_original_destination,omitempty"`
-	// Override domains for the given protocol.
-	// Deprecated. Use sniffing_settings.
-	//
-	// 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"`
+	SniffingSettings           *SniffingConfig        `protobuf:"bytes,7,opt,name=sniffing_settings,json=sniffingSettings,proto3" json:"sniffing_settings,omitempty"`
 }
 
 func (x *ReceiverConfig) Reset() {
 	*x = ReceiverConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *ReceiverConfig) String() string {
@@ -348,7 +289,7 @@ func (*ReceiverConfig) ProtoMessage() {}
 
 func (x *ReceiverConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -398,14 +339,6 @@ func (x *ReceiverConfig) GetReceiveOriginalDestination() bool {
 	return false
 }
 
-// Deprecated: Do not use.
-func (x *ReceiverConfig) GetDomainOverride() []KnownProtocols {
-	if x != nil {
-		return x.DomainOverride
-	}
-	return nil
-}
-
 func (x *ReceiverConfig) GetSniffingSettings() *SniffingConfig {
 	if x != nil {
 		return x.SniffingSettings
@@ -425,11 +358,9 @@ type InboundHandlerConfig struct {
 
 func (x *InboundHandlerConfig) Reset() {
 	*x = InboundHandlerConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *InboundHandlerConfig) String() string {
@@ -440,7 +371,7 @@ func (*InboundHandlerConfig) ProtoMessage() {}
 
 func (x *InboundHandlerConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -484,11 +415,9 @@ type OutboundConfig struct {
 
 func (x *OutboundConfig) Reset() {
 	*x = OutboundConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *OutboundConfig) String() string {
@@ -499,7 +428,7 @@ func (*OutboundConfig) ProtoMessage() {}
 
 func (x *OutboundConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -520,19 +449,19 @@ type SenderConfig struct {
 	unknownFields protoimpl.UnknownFields
 
 	// Send traffic through the given IP. Only IP is allowed.
-	Via               *net.IPOrDomain        `protobuf:"bytes,1,opt,name=via,proto3" json:"via,omitempty"`
-	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"`
+	Via               *net.IPOrDomain         `protobuf:"bytes,1,opt,name=via,proto3" json:"via,omitempty"`
+	StreamSettings    *internet.StreamConfig  `protobuf:"bytes,2,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
+	ProxySettings     *internet.ProxyConfig   `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
+	MultiplexSettings *MultiplexingConfig     `protobuf:"bytes,4,opt,name=multiplex_settings,json=multiplexSettings,proto3" json:"multiplex_settings,omitempty"`
+	ViaCidr           string                  `protobuf:"bytes,5,opt,name=via_cidr,json=viaCidr,proto3" json:"via_cidr,omitempty"`
+	TargetStrategy    internet.DomainStrategy `protobuf:"varint,6,opt,name=target_strategy,json=targetStrategy,proto3,enum=xray.transport.internet.DomainStrategy" json:"target_strategy,omitempty"`
 }
 
 func (x *SenderConfig) Reset() {
 	*x = SenderConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *SenderConfig) String() string {
@@ -543,7 +472,7 @@ func (*SenderConfig) ProtoMessage() {}
 
 func (x *SenderConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -586,6 +515,20 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }
 
+func (x *SenderConfig) GetViaCidr() string {
+	if x != nil {
+		return x.ViaCidr
+	}
+	return ""
+}
+
+func (x *SenderConfig) GetTargetStrategy() internet.DomainStrategy {
+	if x != nil {
+		return x.TargetStrategy
+	}
+	return internet.DomainStrategy(0)
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -594,16 +537,18 @@ 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 uint32 `protobuf:"varint,2,opt,name=concurrency,proto3" json:"concurrency,omitempty"`
+	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"`
 }
 
 func (x *MultiplexingConfig) Reset() {
 	*x = MultiplexingConfig{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *MultiplexingConfig) String() string {
@@ -614,7 +559,7 @@ func (*MultiplexingConfig) ProtoMessage() {}
 
 func (x *MultiplexingConfig) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -636,13 +581,27 @@ func (x *MultiplexingConfig) GetEnabled() bool {
 	return false
 }
 
-func (x *MultiplexingConfig) GetConcurrency() uint32 {
+func (x *MultiplexingConfig) GetConcurrency() int32 {
 	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
@@ -653,11 +612,9 @@ type AllocationStrategy_AllocationStrategyConcurrency struct {
 
 func (x *AllocationStrategy_AllocationStrategyConcurrency) Reset() {
 	*x = AllocationStrategy_AllocationStrategyConcurrency{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AllocationStrategy_AllocationStrategyConcurrency) String() string {
@@ -668,7 +625,7 @@ func (*AllocationStrategy_AllocationStrategyConcurrency) ProtoMessage() {}
 
 func (x *AllocationStrategy_AllocationStrategyConcurrency) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -700,11 +657,9 @@ type AllocationStrategy_AllocationStrategyRefresh struct {
 
 func (x *AllocationStrategy_AllocationStrategyRefresh) Reset() {
 	*x = AllocationStrategy_AllocationStrategyRefresh{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
+	mi := &file_app_proxyman_config_proto_msgTypes[9]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
 }
 
 func (x *AllocationStrategy_AllocationStrategyRefresh) String() string {
@@ -715,7 +670,7 @@ func (*AllocationStrategy_AllocationStrategyRefresh) ProtoMessage() {}
 
 func (x *AllocationStrategy_AllocationStrategyRefresh) ProtoReflect() protoreflect.Message {
 	mi := &file_app_proxyman_config_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
+	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
 			ms.StoreMessageInfo(mi)
@@ -791,7 +746,7 @@ 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,
+	0x4f, 0x6e, 0x6c, 0x79, 0x22, 0xbd, 0x03, 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,
@@ -814,13 +769,8 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x5f, 0x64, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x05, 0x20, 0x01,
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+	0x6e, 0x67, 0x73, 0x18, 0x07, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x21, 0x2e, 0x78, 0x72, 0x61, 0x79,
 	0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61, 0x6e, 0x2e, 0x53, 0x6e,
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@@ -837,7 +787,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65,
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@@ -856,21 +806,30 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72,
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 }
 
 var (
@@ -885,43 +844,43 @@ 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, 1)
 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
+var file_app_proxyman_config_proto_goTypes = []any{
+	(AllocationStrategy_Type)(0),                             // 0: xray.app.proxyman.AllocationStrategy.Type
+	(*InboundConfig)(nil),                                    // 1: xray.app.proxyman.InboundConfig
+	(*AllocationStrategy)(nil),                               // 2: xray.app.proxyman.AllocationStrategy
+	(*SniffingConfig)(nil),                                   // 3: xray.app.proxyman.SniffingConfig
+	(*ReceiverConfig)(nil),                                   // 4: xray.app.proxyman.ReceiverConfig
+	(*InboundHandlerConfig)(nil),                             // 5: xray.app.proxyman.InboundHandlerConfig
+	(*OutboundConfig)(nil),                                   // 6: xray.app.proxyman.OutboundConfig
+	(*SenderConfig)(nil),                                     // 7: xray.app.proxyman.SenderConfig
+	(*MultiplexingConfig)(nil),                               // 8: xray.app.proxyman.MultiplexingConfig
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 9: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 10: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	(*net.PortList)(nil),                                     // 11: xray.common.net.PortList
+	(*net.IPOrDomain)(nil),                                   // 12: xray.common.net.IPOrDomain
+	(*internet.StreamConfig)(nil),                            // 13: xray.transport.internet.StreamConfig
+	(*serial.TypedMessage)(nil),                              // 14: xray.common.serial.TypedMessage
+	(*internet.ProxyConfig)(nil),                             // 15: xray.transport.internet.ProxyConfig
+	(internet.DomainStrategy)(0),                             // 16: xray.transport.internet.DomainStrategy
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
-	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
-	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
+	0,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
+	9,  // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	10, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	11, // 3: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
+	12, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
+	2,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
+	13, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	3,  // 7: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
+	14, // 8: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
+	14, // 9: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
+	12, // 10: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
+	13, // 11: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	15, // 12: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
+	8,  // 13: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
+	16, // 14: xray.app.proxyman.SenderConfig.target_strategy:type_name -> xray.transport.internet.DomainStrategy
 	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
@@ -934,134 +893,12 @@ func file_app_proxyman_config_proto_init() {
 	if File_app_proxyman_config_proto != nil {
 		return
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_app_proxyman_config_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*InboundConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AllocationStrategy); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SniffingConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReceiverConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*InboundHandlerConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OutboundConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SenderConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MultiplexingConfig); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AllocationStrategy_AllocationStrategyConcurrency); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_app_proxyman_config_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AllocationStrategy_AllocationStrategyRefresh); 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_proxyman_config_proto_rawDesc,
-			NumEnums:      2,
+			NumEnums:      1,
 			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,

app/proxyman/config.proto

@@ -40,11 +40,6 @@ message AllocationStrategy {
   AllocationStrategyRefresh refresh = 3;
 }
 
-enum KnownProtocols {
-  HTTP = 0;
-  TLS = 1;
-}
-
 message SniffingConfig {
   // Whether or not to enable content sniffing on an inbound connection.
   bool enabled = 1;
@@ -71,10 +66,7 @@ message ReceiverConfig {
   xray.transport.internet.StreamConfig stream_settings = 4;
   bool receive_original_destination = 5;
   reserved 6;
-  // Override domains for the given protocol.
-  // Deprecated. Use sniffing_settings.
-  repeated KnownProtocols domain_override = 7 [ deprecated = true ];
-  SniffingConfig sniffing_settings = 8;
+  SniffingConfig sniffing_settings = 7;
 }
 
 message InboundHandlerConfig {
@@ -91,11 +83,17 @@ message SenderConfig {
   xray.transport.internet.StreamConfig stream_settings = 2;
   xray.transport.internet.ProxyConfig proxy_settings = 3;
   MultiplexingConfig multiplex_settings = 4;
+  string via_cidr = 5;
+  xray.transport.internet.DomainStrategy target_strategy = 6;
 }
 
 message MultiplexingConfig {
   // Whether or not Mux is enabled.
   bool enabled = 1;
   // Max number of concurrent connections that one Mux connection can handle.
-  uint32 concurrency = 2;
+  int32 concurrency = 2;
+  // Transport XUDP in another Mux.
+  int32 xudpConcurrency = 3;
+  // "reject" (default), "allow" or "skip".
+  string xudpProxyUDP443 = 4;
 }

app/proxyman/inbound/always.go

@@ -9,11 +9,13 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/policy"
 	"github.com/xtls/xray-core/features/stats"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/transport/internet"
+	"google.golang.org/protobuf/proto"
 )
 
 func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter) {
@@ -42,10 +44,12 @@ func getStatCounter(v *core.Instance, tag string) (stats.Counter, stats.Counter)
 }
 
 type AlwaysOnInboundHandler struct {
-	proxy   proxy.Inbound
-	workers []worker
-	mux     *mux.Server
-	tag     string
+	proxyConfig    interface{}
+	receiverConfig *proxyman.ReceiverConfig
+	proxy          proxy.Inbound
+	workers        []worker
+	mux            *mux.Server
+	tag            string
 }
 
 func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *proxyman.ReceiverConfig, proxyConfig interface{}) (*AlwaysOnInboundHandler, error) {
@@ -55,13 +59,15 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	}
 	p, ok := rawProxy.(proxy.Inbound)
 	if !ok {
-		return nil, newError("not an inbound proxy.")
+		return nil, errors.New("not an inbound proxy.")
 	}
 
 	h := &AlwaysOnInboundHandler{
-		proxy: p,
-		mux:   mux.NewServer(ctx),
-		tag:   tag,
+		receiverConfig: receiverConfig,
+		proxyConfig:    proxyConfig,
+		proxy:          p,
+		mux:            mux.NewServer(ctx),
+		tag:            tag,
 	}
 
 	uplinkCounter, downlinkCounter := getStatCounter(core.MustFromContext(ctx), tag)
@@ -75,7 +81,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 
 	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
 	if err != nil {
-		return nil, newError("failed to parse stream config").Base(err).AtWarning()
+		return nil, errors.New("failed to parse stream config").Base(err).AtWarning()
 	}
 
 	if receiverConfig.ReceiveOriginalDestination {
@@ -89,7 +95,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 	}
 	if pl == nil {
 		if net.HasNetwork(nl, net.Network_UNIX) {
-			newError("creating unix domain socket worker on ", address).AtDebug().WriteToLog()
+			errors.LogDebug(ctx, "creating unix domain socket worker on ", address)
 
 			worker := &dsWorker{
 				address:         address,
@@ -109,7 +115,7 @@ func NewAlwaysOnInboundHandler(ctx context.Context, tag string, receiverConfig *
 		for _, pr := range pl.Range {
 			for port := pr.From; port <= pr.To; port++ {
 				if net.HasNetwork(nl, net.Network_TCP) {
-					newError("creating stream worker on ", address, ":", port).AtDebug().WriteToLog()
+					errors.LogDebug(ctx, "creating stream worker on ", address, ":", port)
 
 					worker := &tcpWorker{
 						address:         address,
@@ -167,7 +173,7 @@ func (h *AlwaysOnInboundHandler) Close() error {
 	}
 	errs = append(errs, h.mux.Close())
 	if err := errors.Combine(errs...); err != nil {
-		return newError("failed to close all resources").Base(err)
+		return errors.New("failed to close all resources").Base(err)
 	}
 	return nil
 }
@@ -187,3 +193,16 @@ func (h *AlwaysOnInboundHandler) Tag() string {
 func (h *AlwaysOnInboundHandler) GetInbound() proxy.Inbound {
 	return h.proxy
 }
+
+// ReceiverSettings implements inbound.Handler.
+func (h *AlwaysOnInboundHandler) ReceiverSettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.receiverConfig)
+}
+
+// ProxySettings implements inbound.Handler.
+func (h *AlwaysOnInboundHandler) ProxySettings() *serial.TypedMessage {
+	if v, ok := h.proxyConfig.(proto.Message); ok {
+		return serial.ToTypedMessage(v)
+	}
+	return nil
+}

app/proxyman/inbound/dynamic.go

@@ -7,12 +7,15 @@ import (
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common/dice"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/task"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/proxy"
 	"github.com/xtls/xray-core/transport/internet"
+	"google.golang.org/protobuf/proto"
 )
 
 type DynamicInboundHandler struct {
@@ -22,7 +25,7 @@ type DynamicInboundHandler struct {
 	receiverConfig *proxyman.ReceiverConfig
 	streamSettings *internet.MemoryStreamConfig
 	portMutex      sync.Mutex
-	portsInUse     map[net.Port]bool
+	portsInUse     map[net.Port]struct{}
 	workerMutex    sync.RWMutex
 	worker         []worker
 	lastRefresh    time.Time
@@ -38,7 +41,7 @@ func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *p
 		tag:            tag,
 		proxyConfig:    proxyConfig,
 		receiverConfig: receiverConfig,
-		portsInUse:     make(map[net.Port]bool),
+		portsInUse:     make(map[net.Port]struct{}),
 		mux:            mux.NewServer(ctx),
 		v:              v,
 		ctx:            ctx,
@@ -46,7 +49,7 @@ func NewDynamicInboundHandler(ctx context.Context, tag string, receiverConfig *p
 
 	mss, err := internet.ToMemoryStreamConfig(receiverConfig.StreamSettings)
 	if err != nil {
-		return nil, newError("failed to parse stream settings").Base(err).AtWarning()
+		return nil, errors.New("failed to parse stream settings").Base(err).AtWarning()
 	}
 	if receiverConfig.ReceiveOriginalDestination {
 		if mss.SocketSettings == nil {
@@ -83,7 +86,7 @@ func (h *DynamicInboundHandler) allocatePort() net.Port {
 		port := net.Port(allPorts[r])
 		_, used := h.portsInUse[port]
 		if !used {
-			h.portsInUse[port] = true
+			h.portsInUse[port] = struct{}{}
 			return port
 		}
 	}
@@ -94,7 +97,7 @@ func (h *DynamicInboundHandler) closeWorkers(workers []worker) {
 	for idx, worker := range workers {
 		ports2Del[idx] = worker.Port()
 		if err := worker.Close(); err != nil {
-			newError("failed to close worker").Base(err).WriteToLog()
+			errors.LogInfoInner(h.ctx, err, "failed to close worker")
 		}
 	}
 
@@ -123,7 +126,7 @@ func (h *DynamicInboundHandler) refresh() error {
 		port := h.allocatePort()
 		rawProxy, err := core.CreateObject(h.v, h.proxyConfig)
 		if err != nil {
-			newError("failed to create proxy instance").Base(err).AtWarning().WriteToLog()
+			errors.LogWarningInner(h.ctx, err, "failed to create proxy instance")
 			continue
 		}
 		p := rawProxy.(proxy.Inbound)
@@ -143,7 +146,7 @@ func (h *DynamicInboundHandler) refresh() error {
 				ctx:             h.ctx,
 			}
 			if err := worker.Start(); err != nil {
-				newError("failed to create TCP worker").Base(err).AtWarning().WriteToLog()
+				errors.LogWarningInner(h.ctx, err, "failed to create TCP worker")
 				continue
 			}
 			workers = append(workers, worker)
@@ -163,7 +166,7 @@ func (h *DynamicInboundHandler) refresh() error {
 				ctx:             h.ctx,
 			}
 			if err := worker.Start(); err != nil {
-				newError("failed to create UDP worker").Base(err).AtWarning().WriteToLog()
+				errors.LogWarningInner(h.ctx, err, "failed to create UDP worker")
 				continue
 			}
 			workers = append(workers, worker)
@@ -204,3 +207,16 @@ func (h *DynamicInboundHandler) GetRandomInboundProxy() (interface{}, net.Port,
 func (h *DynamicInboundHandler) Tag() string {
 	return h.tag
 }
+
+// ReceiverSettings implements inbound.Handler.
+func (h *DynamicInboundHandler) ReceiverSettings() *serial.TypedMessage {
+	return serial.ToTypedMessage(h.receiverConfig)
+}
+
+// ProxySettings implements inbound.Handler.
+func (h *DynamicInboundHandler) ProxySettings() *serial.TypedMessage {
+	if v, ok := h.proxyConfig.(proto.Message); ok {
+		return serial.ToTypedMessage(v)
+	}
+	return nil
+}

app/proxyman/inbound/errors.generated.go

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

app/proxyman/inbound/inbound.go

@@ -1,23 +1,23 @@
 package inbound
 
-//go:generate go run github.com/xtls/xray-core/common/errors/errorgen
-
 import (
 	"context"
 	"sync"
 
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/errors"
+	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/inbound"
 )
 
-// Manager is to manage all inbound handlers.
+// Manager manages all inbound handlers.
 type Manager struct {
 	access          sync.RWMutex
-	untaggedHandler []inbound.Handler
+	untaggedHandlers []inbound.Handler
 	taggedHandlers  map[string]inbound.Handler
 	running         bool
 }
@@ -43,11 +43,11 @@ func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error
 	tag := handler.Tag()
 	if len(tag) > 0 {
 		if _, found := m.taggedHandlers[tag]; found {
-			return newError("existing tag found: " + tag)
+			return errors.New("existing tag found: " + tag)
 		}
 		m.taggedHandlers[tag] = handler
 	} else {
-		m.untaggedHandler = append(m.untaggedHandler, handler)
+		m.untaggedHandlers = append(m.untaggedHandlers, handler)
 	}
 
 	if m.running {
@@ -64,7 +64,7 @@ func (m *Manager) GetHandler(ctx context.Context, tag string) (inbound.Handler,
 
 	handler, found := m.taggedHandlers[tag]
 	if !found {
-		return nil, newError("handler not found: ", tag)
+		return nil, errors.New("handler not found: ", tag)
 	}
 	return handler, nil
 }
@@ -80,7 +80,7 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
 
 	if handler, found := m.taggedHandlers[tag]; found {
 		if err := handler.Close(); err != nil {
-			newError("failed to close handler ", tag).Base(err).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+			errors.LogWarningInner(ctx, err, "failed to close handler ", tag)
 		}
 		delete(m.taggedHandlers, tag)
 		return nil
@@ -89,6 +89,21 @@ func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
 	return common.ErrNoClue
 }
 
+// ListHandlers implements inbound.Manager.
+func (m *Manager) ListHandlers(ctx context.Context) []inbound.Handler {
+	m.access.RLock()
+	defer m.access.RUnlock()
+
+	response := make([]inbound.Handler, len(m.untaggedHandlers))
+	copy(response, m.untaggedHandlers)
+
+	for _, v := range m.taggedHandlers {
+		response = append(response, v)
+	}
+
+	return response
+}
+
 // Start implements common.Runnable.
 func (m *Manager) Start() error {
 	m.access.Lock()
@@ -102,7 +117,7 @@ func (m *Manager) Start() error {
 		}
 	}
 
-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Start(); err != nil {
 			return err
 		}
@@ -117,20 +132,20 @@ func (m *Manager) Close() error {
 
 	m.running = false
 
-	var errors []interface{}
+	var errs []interface{}
 	for _, handler := range m.taggedHandlers {
 		if err := handler.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
-	for _, handler := range m.untaggedHandler {
+	for _, handler := range m.untaggedHandlers {
 		if err := handler.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
-	if len(errors) > 0 {
-		return newError("failed to close all handlers").Base(newError(serial.Concat(errors...)))
+	if len(errs) > 0 {
+		return errors.New("failed to close all handlers").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil
@@ -150,7 +165,7 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 
 	receiverSettings, ok := rawReceiverSettings.(*proxyman.ReceiverConfig)
 	if !ok {
-		return nil, newError("not a ReceiverConfig").AtError()
+		return nil, errors.New("not a ReceiverConfig").AtError()
 	}
 
 	streamSettings := receiverSettings.StreamSettings
@@ -159,6 +174,9 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 			Mark: streamSettings.SocketSettings.Mark,
 		})
 	}
+	if streamSettings != nil && streamSettings.ProtocolName == "splithttp" {
+		ctx = session.ContextWithAllowedNetwork(ctx, net.Network_UDP)
+	}
 
 	allocStrategy := receiverSettings.AllocationStrategy
 	if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {
@@ -168,7 +186,7 @@ func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound
 	if allocStrategy.Type == proxyman.AllocationStrategy_Random {
 		return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
 	}
-	return nil, newError("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
+	return nil, errors.New("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
 }
 
 func init() {

app/proxyman/inbound/worker.go

@@ -9,6 +9,8 @@ import (
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
+	c "github.com/xtls/xray-core/common/ctx"
+	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/common/session"
@@ -58,15 +60,16 @@ func getTProxyType(s *internet.MemoryStreamConfig) internet.SocketConfig_TProxyM
 func (w *tcpWorker) callback(conn stat.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
-	ctx = session.ContextWithID(ctx, sid)
+	ctx = c.ContextWithID(ctx, sid)
 
+	outbounds := []*session.Outbound{{}}
 	if w.recvOrigDest {
 		var dest net.Destination
 		switch getTProxyType(w.stream) {
 		case internet.SocketConfig_Redirect:
 			d, err := tcp.GetOriginalDestination(conn)
 			if err != nil {
-				newError("failed to get original destination").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfoInner(ctx, err, "failed to get original destination")
 			} else {
 				dest = d
 			}
@@ -74,11 +77,10 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
 		if dest.IsValid() {
-			ctx = session.ContextWithOutbound(ctx, &session.Outbound{
-				Target: dest,
-			})
+			outbounds[0].Target = dest
 		}
 	}
+	ctx = session.ContextWithOutbounds(ctx, outbounds)
 
 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -89,6 +91,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.TCPDestination(w.address, w.port),
 		Tag:     w.tag,
 		Conn:    conn,
@@ -105,7 +108,7 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_TCP, conn, w.dispatcher); err != nil {
-		newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "connection ends")
 	}
 	cancel()
 	conn.Close()
@@ -121,24 +124,24 @@ func (w *tcpWorker) Start() error {
 		go w.callback(conn)
 	})
 	if err != nil {
-		return newError("failed to listen TCP on ", w.port).AtWarning().Base(err)
+		return errors.New("failed to listen TCP on ", w.port).AtWarning().Base(err)
 	}
 	w.hub = hub
 	return nil
 }
 
 func (w *tcpWorker) Close() error {
-	var errors []interface{}
+	var errs []interface{}
 	if w.hub != nil {
 		if err := common.Close(w.hub); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 		if err := common.Close(w.proxy); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
-	if len(errors) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+	if len(errs) > 0 {
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil
@@ -159,6 +162,7 @@ type udpConn struct {
 	uplink           stats.Counter
 	downlink         stats.Counter
 	inactive         bool
+	cancel           context.CancelFunc
 }
 
 func (c *udpConn) setInactive() {
@@ -201,6 +205,9 @@ func (c *udpConn) Write(buf []byte) (int, error) {
 }
 
 func (c *udpConn) Close() error {
+	if c.cancel != nil {
+		c.cancel()
+	}
 	common.Must(c.done.Close())
 	common.Must(common.Close(c.writer))
 	return nil
@@ -257,6 +264,7 @@ func (w *udpWorker) getConnection(id connID) (*udpConn, bool) {
 	defer w.Unlock()
 
 	if conn, found := w.activeConn[id]; found && !conn.done.Done() {
+		conn.updateActivity()
 		return conn, true
 	}
 
@@ -304,17 +312,28 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 		common.Must(w.checker.Start())
 
 		go func() {
-			ctx := w.ctx
+			ctx, cancel := context.WithCancel(w.ctx)
+			conn.cancel = cancel
 			sid := session.NewID()
-			ctx = session.ContextWithID(ctx, sid)
+			ctx = c.ContextWithID(ctx, sid)
 
+			outbounds := []*session.Outbound{{}}
 			if originalDest.IsValid() {
-				ctx = session.ContextWithOutbound(ctx, &session.Outbound{
-					Target: originalDest,
-				})
+				outbounds[0].Target = originalDest
 			}
+			ctx = session.ContextWithOutbounds(ctx, outbounds)
+			local := net.DestinationFromAddr(w.hub.Addr())
+			if local.Address == net.AnyIP || local.Address == net.AnyIPv6 {
+				if source.Address.Family().IsIPv4() {
+					local.Address = net.AnyIP
+				} else if source.Address.Family().IsIPv6() {
+					local.Address = net.AnyIPv6
+				}
+			}
+
 			ctx = session.ContextWithInbound(ctx, &session.Inbound{
 				Source:  source,
+				Local:   local, // Due to some limitations, in UDP connections, localIP is always equal to listen interface IP
 				Gateway: net.UDPDestination(w.address, w.port),
 				Tag:     w.tag,
 			})
@@ -322,12 +341,13 @@ func (w *udpWorker) callback(b *buf.Buffer, source net.Destination, originalDest
 			if w.sniffingConfig != nil {
 				content.SniffingRequest.Enabled = w.sniffingConfig.Enabled
 				content.SniffingRequest.OverrideDestinationForProtocol = w.sniffingConfig.DestinationOverride
+				content.SniffingRequest.ExcludeForDomain = w.sniffingConfig.DomainsExcluded
 				content.SniffingRequest.MetadataOnly = w.sniffingConfig.MetadataOnly
 				content.SniffingRequest.RouteOnly = w.sniffingConfig.RouteOnly
 			}
 			ctx = session.ContextWithContent(ctx, content)
 			if err := w.proxy.Process(ctx, net.Network_UDP, conn, w.dispatcher); err != nil {
-				newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+				errors.LogInfoInner(ctx, err, "connection ends")
 			}
 			conn.Close()
 			// conn not removed by checker TODO may be lock worker here is better
@@ -358,11 +378,11 @@ func (w *udpWorker) clean() error {
 	defer w.Unlock()
 
 	if len(w.activeConn) == 0 {
-		return newError("no more connections. stopping...")
+		return errors.New("no more connections. stopping...")
 	}
 
 	for addr, conn := range w.activeConn {
-		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 5*60 { // TODO Timeout too small
+		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 2*60 {
 			if !conn.inactive {
 				conn.setInactive()
 				delete(w.activeConn, addr)
@@ -402,26 +422,26 @@ func (w *udpWorker) Close() error {
 	w.Lock()
 	defer w.Unlock()
 
-	var errors []interface{}
+	var errs []interface{}
 
 	if w.hub != nil {
 		if err := w.hub.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
 	if w.checker != nil {
 		if err := w.checker.Close(); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
 
 	if err := common.Close(w.proxy); err != nil {
-		errors = append(errors, err)
+		errs = append(errs, err)
 	}
 
-	if len(errors) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+	if len(errs) > 0 {
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 	return nil
 }
@@ -452,7 +472,7 @@ type dsWorker struct {
 func (w *dsWorker) callback(conn stat.Connection) {
 	ctx, cancel := context.WithCancel(w.ctx)
 	sid := session.NewID()
-	ctx = session.ContextWithID(ctx, sid)
+	ctx = c.ContextWithID(ctx, sid)
 
 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -463,6 +483,7 @@ func (w *dsWorker) callback(conn stat.Connection) {
 	}
 	ctx = session.ContextWithInbound(ctx, &session.Inbound{
 		Source:  net.DestinationFromAddr(conn.RemoteAddr()),
+		Local:   net.DestinationFromAddr(conn.LocalAddr()),
 		Gateway: net.UnixDestination(w.address),
 		Tag:     w.tag,
 		Conn:    conn,
@@ -479,11 +500,11 @@ func (w *dsWorker) callback(conn stat.Connection) {
 	ctx = session.ContextWithContent(ctx, content)
 
 	if err := w.proxy.Process(ctx, net.Network_UNIX, conn, w.dispatcher); err != nil {
-		newError("connection ends").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "connection ends")
 	}
 	cancel()
 	if err := conn.Close(); err != nil {
-		newError("failed to close connection").Base(err).WriteToLog(session.ExportIDToError(ctx))
+		errors.LogInfoInner(ctx, err, "failed to close connection")
 	}
 }
 
@@ -501,24 +522,24 @@ func (w *dsWorker) Start() error {
 		go w.callback(conn)
 	})
 	if err != nil {
-		return newError("failed to listen Unix Domain Socket on ", w.address).AtWarning().Base(err)
+		return errors.New("failed to listen Unix Domain Socket on ", w.address).AtWarning().Base(err)
 	}
 	w.hub = hub
 	return nil
 }
 
 func (w *dsWorker) Close() error {
-	var errors []interface{}
+	var errs []interface{}
 	if w.hub != nil {
 		if err := common.Close(w.hub); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 		if err := common.Close(w.proxy); err != nil {
-			errors = append(errors, err)
+			errs = append(errs, err)
 		}
 	}
-	if len(errors) > 0 {
-		return newError("failed to close all resources").Base(newError(serial.Concat(errors...)))
+	if len(errs) > 0 {
+		return errors.New("failed to close all resources").Base(errors.New(serial.Concat(errs...)))
 	}
 
 	return nil