fix: flutter downgrade to v3.7.12

* Fix: fluent theme mode fix

---------

Co-authored-by: wuke2022 <[email protected]>

.donate/index.md

@@ -0,0 +1,27 @@
+## Donate
+
+Thank you for your support! 🙏
+
+<div style="text-align: center;">
+  <table>
+    <tr>
+      <th>微信</th>
+      <th>支付宝</th>
+      <th>PayPal</th>
+      <th>Ko-fi</th>
+    </tr>
+    <tr>
+      <td><img src="/.donate/qr/wechatpay.jpg" alt="wechatpay" width="300" /></td>
+      <td><img src="/.donate/qr/alipay.jpg" alt="alipay" width="300" /></td>
+      <td><a href="https://paypal.me/monkeyWie" target="_blank">Click Me</a></td>
+      <td><a href="https://ko-fi.com/gopeed" target="_blank">Click Me</a></td>
+  </table>
+</div>
+
+### Crypto
+
+- **BTC**: 35jYkPN8bgkh7AWjt3B1VgMQHqtGYcvF6p
+- **ETH:** 0x928a7fd2398c941Ac6713704e606Fa414595e3A0
+- **Matic:** 0x928a7fd2398c941Ac6713704e606Fa414595e3A0
+- **BNB:** 0x928a7fd2398c941Ac6713704e606Fa414595e3A0
+- **USDT(ERC20)**: 0x928a7fd2398c941Ac6713704e606Fa414595e3A0

.github/FUNDING.yml

@@ -0,0 +1,15 @@
+# These are supported funding model platforms
+
+#github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+#patreon: # Replace with a single Patreon username
+#open_collective: # Replace with a single Open Collective username
+#ko_fi: # Replace with a single Ko-fi username
+#tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+#community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+#liberapay: # Replace with a single Liberapay username
+#issuehunt: # Replace with a single IssueHunt username
+#otechie: # Replace with a single Otechie username
+#custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
+# github: monkeyWie
+ko_fi: gopeed
+custom: https://github.com/GopeedLab/gopeed/blob/main/.donate/index.md#donate

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,8 @@
+<!--
+Please use the following template to create an issue.
+-->
+### Description(required)
+### App Version(required)
+### OS Version(required)
+### Snapshots
+### Log

.github/release-drafter.yml

@@ -0,0 +1,35 @@
+name-template: 'v$NEXT_PATCH_VERSION 🌈'
+tag-template: 'v$NEXT_PATCH_VERSION'
+categories:
+  - title: '🆕 Features'
+    labels:
+      - 'feat'
+      - 'feature'
+      - 'enhancement'
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'fix'
+      - 'bugfix'
+      - 'bug'
+  - title: '🧰 Maintenance'
+    label: 'chore'
+  - title: '📖 Document'
+    label: 'doc'
+  - title: '🚀 CI/CD'
+    label: 'ci'
+change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
+version-resolver:
+  major:
+    labels:
+      - 'major'
+  minor:
+    labels:
+      - 'minor'
+  patch:
+    labels:
+      - 'patch'
+  default: patch
+template: |
+  ## Changes
+
+  $CHANGES

.github/workflows/build.yml

@@ -0,0 +1,370 @@
+name: build
+
+on:
+  workflow_dispatch:
+
+env:
+  GO_VERSION: 1.19
+  FLUTTER_VERSION: 3.7.12
+
+permissions:
+  contents: write
+
+jobs:
+  get-release:
+    runs-on: ubuntu-latest
+    outputs:
+      tag_name: ${{ steps.get-release.outputs.tag_name }}
+      upload_url: ${{ steps.get-release.outputs.upload_url }}
+
+    steps:
+      - uses: monkeyWie/get-latest-release@v1
+        id: get-release
+        with:
+          myToken: ${{ github.token }}
+
+  build-windows:
+    runs-on: windows-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - name: Build
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        run: |
+          Invoke-WebRequest -Uri "https://github.com/jrsoftware/issrc/raw/main/Files/Languages/Unofficial/ChineseSimplified.isl" -OutFile "ChineseSimplified.isl"
+          mv ChineseSimplified.isl "C:\Program Files (x86)\Inno Setup 6\Languages\" 
+
+          go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/windows/libgopeed.dll github.com/GopeedLab/gopeed/bind/desktop
+          cd ui/flutter
+          flutter build windows
+          $mingw = "C:\ProgramData\Chocolatey\lib\mingw\tools\install\mingw64\bin"
+          $system = "C:\Windows\System32"
+          $release = "build\windows\runner\Release\"
+          cp $mingw\libstdc++-6.dll $release
+          cp $mingw\libgcc_s_seh-1.dll $release
+          cp $mingw\libwinpthread-1.dll $release
+          cp $system\msvcp140.dll $release
+          cp $system\vcruntime140.dll $release
+          cp $system\vcruntime140_1.dll $release
+
+          New-Item -Path build\windows\Output -ItemType Directory
+          Compress-Archive -Path "$release*" -DestinationPath "build\windows\Output\Gopeed-$env:VERSION-windows-amd64-portable.zip"
+
+          cd build/windows
+          echo @"
+          ; Script generated by the Inno Setup Script Wizard.
+          ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
+
+          #define MyAppName "Gopeed"
+          #define MyAppVersion "$($env:VERSION.substring(1))"
+          #define MyAppPublisher "monkeyWie"
+          #define MyAppURL "https://gopeed.com"
+          #define MyAppExeName "gopeed.exe"
+
+          [Setup]
+          ; NOTE: The value of AppId uniquely identifies this application. Do not use the same AppId value in installers for other applications.
+          ; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
+          AppId={{5960F34D-1E42-402C-8C85-DE2FF24CBAE4}
+          AppName={#MyAppName}
+          AppVersion={#MyAppVersion}
+          ;AppVerName={#MyAppName} {#MyAppVersion}
+          AppPublisher={#MyAppPublisher}
+          AppPublisherURL={#MyAppURL}
+          AppSupportURL={#MyAppURL}
+          AppUpdatesURL={#MyAppURL}
+          DefaultDirName={autopf}\gopeed
+          DisableProgramGroupPage=yes
+          LicenseFile=..\..\..\..\LICENSE
+          ; Remove the following line to run in administrative install mode (install for all users.)
+          PrivilegesRequired=lowest
+          OutputBaseFilename=gopeed
+          SetupIconFile=..\..\assets\icon\icon.ico
+          Compression=lzma
+          SolidCompression=yes
+          WizardStyle=modern
+          LanguageDetectionMethod=uilanguage
+          ShowLanguageDialog=yes 
+
+          [Languages]
+          Name: "english"; MessagesFile: "compiler:Default.isl"
+          Name: "chinesesimplified"; MessagesFile: "compiler:Languages\ChineseSimplified.isl"
+
+          [Tasks]
+          Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+
+          [Files]
+          Source: ".\runner\Release\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs
+          ; NOTE: Don't use "Flags: ignoreversion" on any shared system files
+
+          [UninstallDelete]
+          Type: filesandordirs; Name: "{app}"
+
+          [Icons]
+          Name: "{autoprograms}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"
+          Name: "{autodesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon
+
+          [Run]
+          Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName, '&', '&&')}}"; Flags: nowait postinstall skipifsilent
+          "@ > setup.iss
+          iscc.exe setup.iss
+          mv "Output\gopeed.exe" "Output\Gopeed-$env:VERSION-windows-amd64.exe"
+          Compress-Archive -Path "Output\Gopeed-$env:VERSION-windows-amd64.exe" -DestinationPath "Output\Gopeed-$env:VERSION-windows-amd64.zip"
+          Remove-Item -Path "Output\Gopeed-$env:VERSION-windows-amd64.exe"
+      - name: Upload
+        uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.get-release.outputs.upload_url }}
+          asset_path: ui/flutter/build/windows/Output/*
+          overwrite: true
+  build-macos-arm64-lib:
+    runs-on: ubuntu-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - name: Build
+        run: |
+          docker pull techknowlogick/xgo:go-1.19.x
+          go install src.techknowlogick.com/xgo@latest
+          xgo --targets=darwin/arm64 -tags="nosqlite" -ldflags="-w -s" -buildmode=c-shared -pkg=bind/desktop -out=libgopeed .
+          mv libgopeed-*.dylib libgopeed.dylib
+      - uses: actions/upload-artifact@v3
+        with:
+          name: macos-arm64-lib
+          path: libgopeed.dylib
+  build-macos:
+    runs-on: macos-latest
+    needs: [get-release, build-macos-arm64-lib]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - name: Install appdmg
+        run: npm install -g appdmg
+      - uses: actions/download-artifact@v3
+        with:
+          name: macos-arm64-lib
+          path: ui/flutter/lib-arm64
+      - name: Build
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        run: |
+          PROJECT_DIR=$(pwd)
+          
+          # amd64 lib
+          go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/lib-amd64/libgopeed.dylib github.com/GopeedLab/gopeed/bind/desktop
+          # universal binary
+          mkdir -p ui/flutter/macos/Frameworks
+          cp ui/flutter/lib-amd64/libgopeed.dylib ui/flutter/macos/Frameworks/amd64-lib
+          cp ui/flutter/lib-arm64/libgopeed.dylib ui/flutter/macos/Frameworks/arm64-lib
+          cd ui/flutter/macos/Frameworks
+          lipo -create -output libgopeed.dylib amd64-lib arm64-lib
+
+          cd $PROJECT_DIR/ui/flutter
+          flutter build macos
+          cd build/macos/Build/Products/Release
+          cat>appdmg.json<<EOF
+          {
+            "title": "Gopeed",
+            "icon": "Gopeed.app/Contents/Resources/AppIcon.icns",
+            "contents": [
+              { "x": 448, "y": 344, "type": "link", "path": "/Applications" },
+              { "x": 192, "y": 344, "type": "file", "path": "Gopeed.app" }
+            ]
+          }
+          EOF
+          mkdir dist
+          appdmg appdmg.json dist/Gopeed-$VERSION-macos.dmg
+      - name: Upload
+        uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.get-release.outputs.upload_url }}
+          asset_path: ui/flutter/build/macos/Build/Products/Release/dist/*
+          overwrite: true
+  build-linux:
+    runs-on: ubuntu-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - run: |
+          sudo apt-get update -y
+          sudo apt-get install -y ninja-build libgtk-3-dev
+      - name: Build
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        run: |
+          go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/linux/bundle/lib/libgopeed.so github.com/GopeedLab/gopeed/bind/desktop
+          cd ui/flutter
+          flutter build linux
+          mkdir -p debian/gui
+          cp assets/icon/icon_1024.png debian/gui/gopeed.png
+          cat>debian/debian.yaml<<EOF
+          flutter_app: 
+            command: gopeed
+            arch: x64
+            parent: /usr/local/lib
+          control:
+            Package: gopeed
+            Version: ${VERSION:1} 
+            Architecture: amd64
+            Essential: no
+            Priority: optional
+            Depends:
+            Maintainer: monkeyWie
+            Description: High speed downloader that supports all platforms.
+          EOF
+
+          cat>debian/gui/gopeed.desktop<<EOF
+          [Desktop Entry]
+          Version=${VERSION:1} 
+          Name=Gopeed
+          GenericName=Gopeed
+          Comment=High speed downloader that supports all platforms.
+          Terminal=false
+          Type=Application
+          Categories=Utility
+          Keywords=Flutter;Downloader;
+          EOF
+
+          dart pub global activate flutter_to_debian
+          flutter_to_debian
+          mv debian/packages/gopeed*.deb debian/packages/Gopeed-$VERSION-linux-amd64.deb
+      - name: Upload
+        uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.get-release.outputs.upload_url }}
+          asset_path: ui/flutter/debian/packages/*
+          overwrite: true
+  build-android:
+    runs-on: ubuntu-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: "11"
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - name: Build
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+          APK_KEYSTORE : ${{ secrets.APK_KEYSTORE }}
+          APK_KEY_PASSWORD : ${{ secrets.APK_KEY_PASSWORD }}
+          APK_STORE_PASSWORD : ${{ secrets.APK_STORE_PASSWORD }}
+        run: |
+          go install golang.org/x/mobile/cmd/gomobile@latest
+          go get golang.org/x/mobile/bind
+          gomobile init
+          gomobile bind -tags nosqlite -ldflags="-w -s" -o ui/flutter/android/app/libs/libgopeed.aar -target=android -androidapi 19 -javapkg=com.gopeed github.com/GopeedLab/gopeed/bind/mobile
+          cd ui/flutter
+          echo $APK_KEYSTORE | base64 -di > android/app/upload-keystore.jks
+          flutter build apk
+          mkdir dist
+          cp build/app/outputs/flutter-apk/app-release.apk dist/Gopeed-$VERSION-android.apk
+      - name: Upload
+        uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.get-release.outputs.upload_url }}
+          asset_path: ui/flutter/dist/*
+          overwrite: true
+  build-web:
+    runs-on: ubuntu-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - name: Build
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        run: |
+          cd ui/flutter
+          flutter build web
+          cd ../../
+          cp -r ui/flutter/build/web cmd/web/dist
+          mkdir -p dist/zip
+          goos_arr=(windows darwin linux)
+          goarch_arr=(386 amd64 arm64)
+          export CGO_ENABLED=0
+          for goos in "${goos_arr[@]}"; do
+            for goarch in "${goarch_arr[@]}"; do
+              goos_name=$goos
+              if [ $goos = "darwin" ]; then
+                goos_name="macos"
+              fi
+              name=gopeed-web-$VERSION-$goos_name-$goarch
+              dir="dist/$name/"
+              (GOOS=$goos GOARCH=$goarch go build -tags nosqlite,web -ldflags="-s -w" -o $dir github.com/GopeedLab/gopeed/cmd/web \
+              && cd $dir \
+              && file=$(ls -AU | head -1) \
+              && mkdir $name \
+              && mv $file $name/$(echo $file | sed -e "s/web/gopeed/g") \
+              && zip -r ../zip/$name.zip * \
+              && cd ../..) \
+              || true
+            done
+          done
+      - name: Upload
+        uses: shogo82148/actions-upload-release-asset@v1
+        with:
+          upload_url: ${{ needs.get-release.outputs.upload_url }}
+          asset_path: dist/zip/*
+          overwrite: true
+  build-docker:
+    runs-on: ubuntu-latest
+    needs: [get-release]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: liwei2633
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        env:
+          VERSION: ${{ needs.get-release.outputs.tag_name }}
+        with:
+          push: true
+          platforms: |
+            linux/386
+            linux/amd64
+            linux/arm64
+          tags: |
+            liwei2633/gopeed:latest
+            liwei2633/gopeed:${{ env.VERSION }}

.github/workflows/release.yml

@@ -0,0 +1,40 @@
+name: release
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "bind/**"
+      - "cmd/**"
+      - "internal/**"
+      - "pkg/**"
+      - "ui/**"
+      - ".github/workflows/release.yml"
+      - ".github/release-drafter.yml"
+      - "go.mod"
+      - "go.sum"
+      - "Dockerfile"
+
+env:
+  GO_VERSION: 1.19
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    outputs:
+      tag_name: ${{ steps.create_release.outputs.tag_name }}
+      upload_url: ${{ steps.create_release.outputs.upload_url }}
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: release-drafter/release-drafter@v5
+        id: create_release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -0,0 +1,80 @@
+name: test
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "bind/**"
+      - "cmd/**"
+      - "internal/**"
+      - "pkg/**"
+      - "ui/**"
+      - ".github/workflows/test.yml"
+      - "go.mod"
+      - "go.sum"
+  push:
+    branches:
+      - main
+    paths:
+      - "bind/**"
+      - "cmd/**"
+      - "internal/**"
+      - "pkg/**"
+      - "ui/**"
+      - ".github/workflows/test.yml"
+      - "go.mod"
+      - "go.sum"
+
+env:
+  GO_VERSION: 1.19
+  FLUTTER_VERSION: 3.7.12
+
+jobs:
+  #  lint:
+  #    name: Lint
+  #    runs-on: ubuntu-latest
+  #    steps:
+  #      - uses: actions/setup-go@v2
+  #        with:
+  #          go-version: '^1.19'
+  #      - uses: actions/checkout@v2
+  #      - name: Lint Go Code
+  #        run: |
+  #          export PATH=$PATH:$(go env GOPATH)/bin # temporary fix. See https://github.com/actions/setup-go/issues/14
+  #          go get -u golang.org/x/lint/golint
+  #          golint -set_exit_status ./...
+  test:
+    name: Test check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - name: Run Unit tests.
+        run: go test $(go list ./... | grep -v /cmd/ | grep -v /bind/ ) -v -covermode=count -coverprofile=coverage.txt
+      - uses: codecov/codecov-action@v3
+        with:
+          files: ./coverage.txt
+  build:
+    name: Build check
+    runs-on: ubuntu-latest
+    #    needs: [lint, test]
+    needs: [test]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ env.FLUTTER_VERSION }}
+      - run: |
+          sudo apt-get update -y
+          sudo apt-get install -y ninja-build libgtk-3-dev
+      - name: Build
+        run: |
+          go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/linux/bundle/lib/libgopeed.so github.com/GopeedLab/gopeed/bind/desktop
+          cd ui/flutter
+          flutter build linux

.gitignore

@@ -11,6 +11,17 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
-debug
+.idea/
 
-.idea/
+bin/
+
+.torrent.db
+.torrent.db-shm
+.torrent.db-wal
+
+*.data
+*.db
+
+.DS_Store
+
+dist/

.vscode/launch.json

@@ -1,17 +0,0 @@
-{
-    // Use IntelliSense to learn about possible attributes.
-    // Hover to view descriptions of existing attributes.
-    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-    "version": "0.2.0",
-    "configurations": [
-        {
-            "name": "Launch",
-            "type": "go",
-            "request": "launch",
-            "mode": "auto",
-            "program": "${fileDirname}",
-            "env": {},
-            "args": []
-        }
-    ]
-}

.vscode/settings.json

@@ -1,9 +0,0 @@
-{
-  "go.useLanguageServer": true,
-  "[go]": {
-    "editor.formatOnSave": true,
-    "editor.codeActionsOnSave": {
-      "source.organizeImports": true
-    }
-  },
-}

CONTRIBUTING.md

@@ -0,0 +1,54 @@
+# Gopeed contributors guide
+
+Firstly, thank you for your interest in contributing to Gopeed. This guide will help you better
+participate in the development of Gopeed.
+
+## Branch description
+
+This project only has one main branch, namely the `main` branch. If you want to participate in the
+development of Gopeed, please fork this project first, and then develop in your fork project. After
+development is completed, submit a PR to this project and merge it into the `main` branch.
+
+## Local development
+
+It is recommended to develop and debug through the web. First, start the backend service, and start
+it by the command line `go run cmd/api/main.go`, the default port of the service is `9999`, and then
+start the front-end flutter project in `debug` mode to run.
+
+## Translation
+
+The internationalization files of Gopeed are located in the `ui/flutter/assets/locales` directory.
+You only need to add the corresponding language file in this directory.
+
+
+Generate locales after you edit locales:
+
+
+```
+get generate locales 
+```
+
+Please refer to `en_us.dart` for translation.
+
+## flutter development
+
+Don't forget to run`dart format ./ui/flutter`before you commit to keep your code in standard dart format
+
+Turn on build_runner watcher if you want to edit api/models:
+
+```
+flutter pub run build_runner watch
+```
+
+
+get-cli commands usages:
+
+```
+ create:  
+    controller:  Generate controller
+    page:  Use to generate pages
+    view:  Generate view
+  generate:
+    locales:  Generate translation file from json files
+    model:  generate Class model from json
+```

CONTRIBUTING_zh-CN.md

@@ -0,0 +1,48 @@
+# Gopeed 贡献指南
+
+首先感谢您对贡献代码感兴趣，这份指南将帮助您更好的参与到 Gopeed 的开发中来。
+
+## 分支说明
+
+本项目只有一个主分支，即 `main` 分支，如果您想要参与到 Gopeed 的开发中来，请先 fork 本项目，然后在您的 fork 项目中进行开发，开发完成后再向本项目提交
+PR，合并到 `main` 分支。
+
+## 本地开发
+
+建议通过 web 端进行开发调试，首先启动后端服务，通过命令行 `go run cmd/api/main.go` 启动 ，服务启动默认端口为 `9999`，然后以 `debug` 模式启动前端
+flutter 项目即可运行。
+
+## 翻译
+ 
+Gopeed 的国际化文件位于 `ui/flutter/assets/locales` 目录下，只需要在该目录下添加对应的语言文件即可。
+
+编辑locales后请运行以下命令:
+
+```
+get generate locales 
+```
+
+请注意以 `en_US.json` 为参照进行翻译。
+
+## flutter开发
+
+每次提交前请务必`dart format ./ui/flutter`
+
+如果要编辑api/models，请打开build_runner watcher:
+
+```
+flutter pub run build_runner watch
+```
+
+适用get-cli 命令:
+
+```
+ create:  
+    controller:  Generate controller
+    page:  Use to generate pages
+    view:  Generate view
+  generate:
+    locales:  Generate translation file from json files
+    model:  generate Class model from json
+```
+

Dockerfile

@@ -0,0 +1,21 @@
+FROM cirrusci/flutter:3.7.7 AS flutter
+WORKDIR /app
+COPY ./ui/flutter/pubspec.yaml ./ui/flutter/pubspec.lock ./
+RUN flutter pub get
+COPY ./ui/flutter ./
+RUN flutter build web
+
+FROM golang:1.19.3 AS go
+WORKDIR /app
+COPY ./go.mod ./go.sum ./
+RUN go mod download
+COPY . .
+COPY --from=flutter /app/build/web ./cmd/web/dist
+RUN CGO_ENABLED=0 go build -tags nosqlite,web -ldflags="-s -w" -o dist/gopeed github.com/GopeedLab/gopeed/cmd/web
+
+FROM alpine:3.14.2
+LABEL maintainer="monkeyWie"
+WORKDIR /app
+COPY --from=go /app/dist/gopeed ./
+EXPOSE 9999
+ENTRYPOINT ["./gopeed"]

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,20 +1,158 @@
-## gopeed
-支持多协议（HTTP、BitTorrent）下载的客户端，提供命令行、RESTful API、WebSocket、Go类库方式来使用。
+[![Test Status](https://github.com/GopeedLab/gopeed/workflows/test/badge.svg)](https://github.com/GopeedLab/gopeed/actions?query=workflow%3Atest)
+[![Codecov](https://codecov.io/gh/GopeedLab/gopeed/branch/main/graph/badge.svg)](https://codecov.io/gh/GopeedLab/gopeed)
+[![Release](https://img.shields.io/github/release/GopeedLab/gopeed.svg?style=flat-square)](https://github.com/GopeedLab/gopeed/releases)
+[![Donate](https://img.shields.io/badge/%24-donate-ff69b4.svg)](https://github.com/GopeedLab/gopeed/blob/main/.donate/index.md#donate)
+[![Discord](https://img.shields.io/discord/1037992631881449472?label=Discord&logo=discord&style=social)](https://discord.gg/ZUJqJrwCGB)
 
-## TODO
-- [x] HTTP下载实现
-- [ ] BitTorrent下载实现
-    - [x] .torrent文件解析
-    - [x] tracker协议实现
-    - [x] peer wire protocol协议实现
-    - [ ] DHT协议实现
-    - [ ] 磁力链接支持
-    - [ ] uTP协议实现
-- [ ] 下载接口抽象(不关心具体协议)
-- [ ] 支持自定义配置
-- [ ] 限速功能实现
-- [ ] 命令行工具提供
-- [ ] RESTful服务提供
+![](_docs/img/banner.png)
 
-## 参与
-由于项目目前还未定型，代码可能随时有大的调整，所以暂不接受PR，当然如果有什么好的想法可以在issue区提出来。
+[English](/README.md) | [中文](/README_zh-CN.md)
+
+## Introduction
+
+Gopeed (full name Go Speed), a high-speed downloader developed by `Golang` + `Flutter`, supports (HTTP, BitTorrent, Magnet) protocol, and supports all platforms.
+
+Visit ✈ [Official Website](https://gopeed.com) | 📖 [Develop Docs](https://docs.gopeed.com)
+
+## Install
+
+**Supported platforms**
+
+- [x] windows
+- [x] macos
+- [x] linux
+- [x] android
+- [ ] ios
+- [x] web
+- [x] docker
+
+[Download](https://github.com/GopeedLab/gopeed/releases/latest)
+
+> Tips: If the macos open failed, please execute the `xattr -d com.apple.quarantine /Applications/Gopeed.app` command in the terminal
+
+### Command tool
+
+use `go install`:
+
+```bash
+go install github.com/GopeedLab/gopeed/cmd/gopeed@latest
+```
+
+### Docker
+
+#### Start directly
+
+```bash
+docker run -d -p 9999:9999 -v /path/to/download:/download liwei2633/gopeed
+```
+
+#### Using Docker Compose
+
+```bash
+docker-compose up -d
+```
+
+#### Access Gopeed
+
+When the docker container is running, you can access the web page through `http://localhost:9999`.
+
+> Tip: Modify the download path to `/download` on the setting page to access the downloaded files on the host.
+
+## Donate
+
+If you like this project, please consider [donating](/.donate/index.md#donate) to support the development of this project, thank you!
+
+## Showcase
+
+![](_docs/img/ui-demo.png)
+
+## Development
+
+This project is divided into two parts, the front end uses `flutter`, the back end uses `Golang`, and the two sides communicate through the `http` protocol. On the unix system, `unix socket` is used, and on the windows system, `tcp` protocol is used.
+
+> The front code is located in the `ui/flutter` directory.
+
+### Environment
+
+1. Golang 1.19+
+2. Flutter 3.7+
+
+### Clone
+
+```bash
+git clone [email protected]:monkeyWie/gopeed.git
+```
+
+### Contributing
+
+Please refer to [CONTRIBUTING.md](/CONTRIBUTING.md)
+
+### Build
+
+#### Desktop
+
+First, you need to configure the environment according to the [flutter desktop official website document](https://docs.flutter.dev/development/platform-integration/desktop), and then you need to prepare the `cgo` environment, which can be searched for yourself.
+
+command:
+
+- windows
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/windows/libgopeed.dll github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build windows
+```
+
+- macos
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/macos/Frameworks/libgopeed.dylib github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build macos
+```
+
+- linux
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/linux/bundle/lib/libgopeed.so github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build linux
+```
+
+#### Mobile
+
+Same as before, you also need to prepare the `cgo` environment, and then install `gomobile`:
+
+```bash
+go install golang.org/x/mobile/cmd/gomobile@latest
+go get golang.org/x/mobile/bind
+gomobile init
+```
+
+command:
+
+- android
+
+```bash
+gomobile bind -tags nosqlite -ldflags="-w -s" -o ui/flutter/android/app/libs/libgopeed.aar -target=android -androidapi 19 -javapkg=com.gopeed github.com/GopeedLab/gopeed/bind/mobile
+cd ui/flutter
+flutter build apk
+```
+
+#### Web
+
+command:
+
+```bash
+cd ui/flutter
+flutter build web
+cd ../../
+rm -rf cmd/web/dist
+cp -r ui/flutter/build/web cmd/web/dist
+go build -tags nosqlite,web -ldflags="-s -w" -o bin/ github.com/GopeedLab/gopeed/cmd/web
+go run cmd/web/main.go
+```
+
+## License
+
+[GPLv3](LICENSE)

README_zh-CN.md

@@ -0,0 +1,157 @@
+[![Test Status](https://github.com/GopeedLab/gopeed/workflows/test/badge.svg)](https://github.com/GopeedLab/gopeed/actions?query=workflow%3Atest)
+[![Codecov](https://codecov.io/gh/GopeedLab/gopeed/branch/main/graph/badge.svg)](https://codecov.io/gh/GopeedLab/gopeed)
+[![Release](https://img.shields.io/github/release/GopeedLab/gopeed.svg?style=flat-square)](https://github.com/GopeedLab/gopeed/releases)
+[![Donate](https://img.shields.io/badge/%24-donate-ff69b4.svg)](https://github.com/GopeedLab/gopeed/blob/main/.donate/index.md#donate)
+[![Discord](https://img.shields.io/discord/1037992631881449472?label=Discord&logo=discord&style=social)](https://discord.gg/ZUJqJrwCGB)
+
+![](_docs/img/banner.png)
+
+[English](/README.md) | [中文](/README_zh-CN.md)
+
+## 介绍
+
+Gopeed（全称 Go Speed），是一款由`Golang`+`Flutter`开发的高速下载器，支持（HTTP、BitTorrent、Magnet）协议下载，并且支持全平台使用。
+
+访问 ✈ [官方网站](https://gopeed.com/zh-CN) | 📖 [开发文档](https://docs.gopeed.com/zh/)
+
+## 安装
+
+**已支持平台**
+
+- [x] windows
+- [x] macos
+- [x] linux
+- [x] android
+- [ ] ios
+- [x] web
+- [x] docker
+
+[前往下载](https://github.com/GopeedLab/gopeed/releases/latest)
+
+> 注：macos 版本运行如果提示损坏，请在终端执行 `xattr -d com.apple.quarantine /Applications/Gopeed.app` 命令
+
+### 命令行工具
+
+使用`go install`安装：
+
+```bash
+go install github.com/GopeedLab/gopeed/cmd/gopeed@latest
+```
+
+### Docker
+
+#### 直接运行
+
+```bash
+docker run -d -p 9999:9999 -v /path/to/download:/download liwei2633/gopeed
+```
+
+#### 使用 Docker Compose
+
+```bash
+docker-compose up -d
+```
+
+#### 访问服务
+
+当 docker 容器运行时，可以通过 `http://localhost:9999` 访问 web 页面。
+> 提示：在设置页面把下载路径修改为 `/download` 以便在宿主机访问下载完的文件。
+
+## 打赏
+
+如果觉得项目对你有帮助，请考虑[打赏](/.donate/index.md#donate)以支持这个项目的发展，非常感谢！
+
+## 界面展示
+
+![](_docs/img/ui-demo.png)
+
+## 开发
+
+本项目分为前端和后端两个部分，前端使用`flutter`，后端使用`Golang`，两边通过`http`协议进行通讯，在 unix 系统下，使用的是`unix socket`，在 windows 系统下，使用的是`tcp`协议。
+
+> 前端代码位于`ui/flutter`目录下。
+
+### 环境要求
+
+1. Golang 1.19+
+2. Flutter 3.7+
+
+### 克隆项目
+
+```bash
+git clone [email protected]:monkeyWie/gopeed.git
+```
+
+### 贡献代码
+
+请参考[贡献指南](CONTRIBUTING_zh-CN.md)
+
+### 编译
+
+#### 桌面端
+
+首先需要按照[flutter desktop 官网文档](https://docs.flutter.dev/development/platform-integration/desktop)进行环境配置，然后需要准备好`cgo`环境，具体可以自行搜索。
+
+构建命令：
+
+- windows
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/windows/libgopeed.dll github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build windows
+```
+
+- macos
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/macos/Frameworks/libgopeed.dylib github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build macos
+```
+
+- linux
+
+```bash
+go build -tags nosqlite -ldflags="-w -s" -buildmode=c-shared -o ui/flutter/linux/bundle/lib/libgopeed.so github.com/GopeedLab/gopeed/bind/desktop
+cd ui/flutter
+flutter build linux
+```
+
+#### 移动端
+
+同样的也是需要准备好`cgo`环境，接着安装`gomobile`：
+
+```bash
+go install golang.org/x/mobile/cmd/gomobile@latest
+go get golang.org/x/mobile/bind
+gomobile init
+```
+
+构建命令：
+
+- android
+
+```bash
+gomobile bind -tags nosqlite -ldflags="-w -s" -o ui/flutter/android/app/libs/libgopeed.aar -target=android -androidapi 19 -javapkg=com.gopeed github.com/GopeedLab/gopeed/bind/mobile
+cd ui/flutter
+flutter build apk
+```
+
+#### Web 端
+
+构建命令：
+
+```bash
+cd ui/flutter
+flutter build web
+cd ../../
+rm -rf cmd/web/dist
+cp -r ui/flutter/build/web cmd/web/dist
+go build -tags nosqlite,web -ldflags="-s -w" -o bin/ github.com/GopeedLab/gopeed/cmd/web
+go run cmd/web/main.go
+```
+
+## 开源许可
+
+基于 [GPLv3](LICENSE) 协议开源。

_examples/basic/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/protocol/http"
+)
+
+func main() {
+	finallyCh := make(chan error)
+	_, err := download.Boot().
+		URL("https://www.baidu.com/index.html").
+		Listener(func(event *download.Event) {
+			if event.Key == download.EventKeyFinally {
+				finallyCh <- event.Err
+			}
+		}).
+		Create(&base.Options{
+			Extra: http.OptsExtra{
+				Connections: 8,
+			},
+		})
+	if err != nil {
+		panic(err)
+	}
+	err = <-finallyCh
+	if err != nil {
+		fmt.Printf("download fail:%v\n", err)
+	} else {
+		fmt.Println("download success")
+	}
+}

bind/desktop/main.go

@@ -0,0 +1,28 @@
+package main
+
+import "C"
+import (
+	"encoding/json"
+	"github.com/GopeedLab/gopeed/pkg/rest"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+)
+
+func main() {}
+
+//export Start
+func Start(cfg *C.char) (int, *C.char) {
+	var config model.StartConfig
+	if err := json.Unmarshal([]byte(C.GoString(cfg)), &config); err != nil {
+		return 0, C.CString(err.Error())
+	}
+	realPort, err := rest.Start(&config)
+	if err != nil {
+		return 0, C.CString(err.Error())
+	}
+	return realPort, nil
+}
+
+//export Stop
+func Stop() {
+	rest.Stop()
+}

bind/mobile/main.go

@@ -0,0 +1,21 @@
+package libgopeed
+
+// #cgo LDFLAGS: -static-libstdc++
+import "C"
+import (
+	"encoding/json"
+	"github.com/GopeedLab/gopeed/pkg/rest"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+)
+
+func Start(cfg string) (int, error) {
+	var config model.StartConfig
+	if err := json.Unmarshal([]byte(cfg), &config); err != nil {
+		return 0, err
+	}
+	return rest.Start(&config)
+}
+
+func Stop() {
+	rest.Stop()
+}

cmd/api/main.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	_ "embed"
+	"github.com/GopeedLab/gopeed/cmd"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+)
+
+func main() {
+	cfg := &model.StartConfig{
+		Network: "tcp",
+		Address: "127.0.0.1:9999",
+		Storage: model.StorageBolt,
+	}
+	cmd.Start(cfg)
+}

cmd/banner.txt

@@ -0,0 +1,7 @@
+
+  _______   ______   .______    _______  _______  _______
+ /  _____| /  __  \  |   _  \  |   ____||   ____||       \
+|  |  __  |  |  |  | |  |_)  | |  |__   |  |__   |  .--.  |
+|  | |_ | |  |  |  | |   ___/  |   __|  |   __|  |  |  |  |
+|  |__| | |  `--'  | |  |      |  |____ |  |____ |  '--'  |
+ \______|  \______/  | _|      |_______||_______||_______/

cmd/gopeed/flags.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+)
+
+type args struct {
+	url         string
+	connections *int
+	dir         *string
+}
+
+func parse() *args {
+	dir, err := os.Getwd()
+	if err != nil {
+		panic(err)
+	}
+	var args args
+	args.connections = flag.Int("C", 16, "Concurrent connections.")
+	args.dir = flag.String("D", dir, "Store directory.")
+	flag.Parse()
+	t := flag.Args()
+	if len(t) > 0 {
+		args.url = t[0]
+	} else {
+		gPrintln("missing url parameter, for example: gopeed https://www.google.com or gopeed bt.torrent or gopeed magnet:?xt=urn:btih:...")
+		gPrintln("try 'gopeed -h' for more information")
+		os.Exit(1)
+	}
+	return &args
+}
+
+func gPrint(msg string) {
+	fmt.Print("gopeed: " + msg)
+}
+
+func gPrintln(msg string) {
+	gPrint(msg + "\n")
+}

cmd/gopeed/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"fmt"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/protocol/http"
+	"github.com/GopeedLab/gopeed/pkg/util"
+	"strings"
+	"sync"
+)
+
+const progressWidth = 20
+
+func main() {
+	//args := parse()
+	var dir = "./"
+	var connections = 8
+	args := &args{
+		url:         "https://sel-kor-ping.vultr.com/vultr.com.100MB.bin",
+		dir:         &dir,
+		connections: &connections,
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	_, err := download.Boot().
+		URL(args.url).
+		Listener(func(event *download.Event) {
+			if event.Key == download.EventKeyProgress {
+				printProgress(event.Task, "downloading...")
+			}
+			if event.Key == download.EventKeyFinally {
+				var title string
+				if event.Err != nil {
+					title = "fail"
+				} else {
+					title = "complete"
+				}
+				printProgress(event.Task, title)
+				fmt.Println()
+				if event.Err != nil {
+					fmt.Printf("reason: %s", event.Err.Error())
+				} else {
+					fmt.Printf("saving path: %s", *args.dir)
+				}
+				wg.Done()
+			}
+		}).
+		Create(&base.Options{
+			Path:  *args.dir,
+			Extra: http.OptsExtra{Connections: *args.connections},
+		})
+	if err != nil {
+		panic(err)
+	}
+	wg.Wait()
+}
+
+var (
+	lastLineLen = 0
+	sb          = new(strings.Builder)
+)
+
+func printProgress(task *download.Task, title string) {
+	rate := float64(task.Progress.Downloaded) / float64(task.Meta.Res.Size)
+	completeWidth := int(progressWidth * rate)
+	speed := util.ByteFmt(task.Progress.Speed)
+	totalSize := util.ByteFmt(task.Meta.Res.Size)
+	sb.WriteString(fmt.Sprintf("\r%s [", title))
+	for i := 0; i < progressWidth; i++ {
+		if i < completeWidth {
+			sb.WriteString("■")
+		} else {
+			sb.WriteString("□")
+		}
+	}
+	sb.WriteString(fmt.Sprintf("] %.1f%%    %s/s    %s", rate*100, speed, totalSize))
+	if lastLineLen != 0 {
+		paddingLen := lastLineLen - sb.Len()
+		if paddingLen > 0 {
+			sb.WriteString(strings.Repeat(" ", paddingLen))
+		}
+	}
+	lastLineLen = sb.Len()
+	fmt.Print(sb.String())
+	sb.Reset()
+}

cmd/server.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	_ "embed"
+	"fmt"
+	"github.com/GopeedLab/gopeed/pkg/rest"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+//go:embed banner.txt
+var banner string
+
+func Start(cfg *model.StartConfig) {
+	fmt.Println(banner)
+	srv, listener, err := rest.BuildServer(cfg)
+	if err != nil {
+		panic(err)
+	}
+	downloadCfg, err := rest.Downloader.GetConfig()
+	if err != nil {
+		panic(err)
+	}
+	if downloadCfg.FirstLoad {
+		// Set default download dir to user download dir
+		userDir, err := os.UserHomeDir()
+		if err == nil {
+			downloadDir := filepath.Join(userDir, "Downloads")
+			downloadCfg.DownloadDir = downloadDir
+			rest.Downloader.PutConfig(downloadCfg)
+		}
+
+	}
+	fmt.Printf("Server start success on http://%s\n", listener.Addr().String())
+	if err := srv.Serve(listener); err != nil && err != http.ErrServerClosed {
+		panic(err)
+	}
+}

cmd/web/main.go

@@ -0,0 +1,29 @@
+//go:build web
+// +build web
+
+package main
+
+import (
+	"embed"
+	"github.com/GopeedLab/gopeed/cmd"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+	"io/fs"
+)
+
+//go:embed dist/*
+var dist embed.FS
+
+func main() {
+	sub, err := fs.Sub(dist, "dist")
+	if err != nil {
+		panic(err)
+	}
+	cfg := &model.StartConfig{
+		Network:   "tcp",
+		Address:   "0.0.0.0:9999",
+		Storage:   model.StorageBolt,
+		WebEnable: true,
+		WebFS:     sub,
+	}
+	cmd.Start(cfg)
+}

docker-compose.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+services:
+  gopeed:
+    container_name: gopeed
+    ports:
+      - 9999:9999 # HTTP port (host:container)
+    image: liwei2633/gopeed
+    volumes:
+      - ~/Downloads:/download # replace with your prefer path
+    restart: unless-stopped

download/common/constants.go

@@ -1,30 +0,0 @@
-package common
-
-import "errors"
-
-type Status int
-
-const (
-	DownloadStatusReady Status = iota
-	DownloadStatusStart
-	DownloadStatusPause
-	DownloadStatusError
-	DownloadStatusDone
-)
-
-const (
-	HttpCodeOK             = 200
-	HttpCodePartialContent = 206
-
-	HttpHeaderRange              = "Range"
-	HttpHeaderContentLength      = "Content-Length"
-	HttpHeaderContentRange       = "Content-Range"
-	HttpHeaderContentDisposition = "Content-Disposition"
-
-	HttpHeaderRangeFormat = "bytes=%d-%d"
-)
-
-var (
-	PauseErr  = errors.New("pause")
-	DeleteErr = errors.New("delete")
-)

download/common/controller.go

@@ -1,145 +0,0 @@
-package common
-
-import (
-	"golang.org/x/net/proxy"
-	"net"
-	"os"
-	"time"
-)
-
-// 下载请求
-type Request struct {
-	// 下载链接
-	URL string
-	// 附加信息
-	Extra interface{}
-}
-
-// 资源信息
-type Resource struct {
-	Req *Request
-	// 资源总大小
-	Size int64
-	// 是否支持断点下载
-	Range bool
-	// 资源所包含的文件列表
-	Files []*FileInfo
-}
-
-type Options struct {
-	// 保存文件名
-	Name string
-	// 保存目录
-	Path string
-	// 并发连接数
-	Connections int
-}
-
-type FileInfo struct {
-	Name string
-	Path string
-	Size int64
-}
-
-type Process interface {
-	Start() error
-	Pause() error
-	Continue() error
-	Delete() error
-}
-
-type Controller struct {
-	Files map[string]*os.File
-}
-
-func NewController() *Controller {
-	return &Controller{Files: make(map[string]*os.File)}
-}
-
-func (c *Controller) Touch(name string, size int64) (file *os.File, err error) {
-	if size > 0 {
-		err := os.Truncate(name, size)
-		if err != nil {
-			return nil, err
-		}
-		file, err = os.OpenFile(name, os.O_RDWR, 0666)
-	} else {
-		file, err = os.Create(name)
-	}
-	if err == nil {
-		c.Files[name] = file
-	}
-	return
-}
-
-func (c *Controller) Open(name string) (file *os.File, err error) {
-	file, err = os.OpenFile(name, os.O_RDWR, 0666)
-	if err == nil {
-		c.Files[name] = file
-	}
-	return
-}
-
-func (c *Controller) Write(name string, offset int64, buf []byte) (int, error) {
-	return c.Files[name].WriteAt(buf, offset)
-}
-
-func (c *Controller) Close(name string) error {
-	err := c.Files[name].Close()
-	delete(c.Files, name)
-	return err
-}
-
-func (c *Controller) ContextDialer() (proxy.Dialer, error) {
-	// return proxy.SOCKS5("tpc", "127.0.0.1:9999", nil, nil)
-	var dialer proxy.Dialer
-	return &DialerWarp{dialer: dialer}, nil
-}
-
-type DialerWarp struct {
-	dialer proxy.Dialer
-}
-
-type ConnWarp struct {
-	conn net.Conn
-}
-
-func (c *ConnWarp) Read(b []byte) (n int, err error) {
-	return c.conn.Read(b)
-}
-
-func (c *ConnWarp) Write(b []byte) (n int, err error) {
-	return c.conn.Write(b)
-}
-
-func (c *ConnWarp) Close() error {
-	return c.conn.Close()
-}
-
-func (c *ConnWarp) LocalAddr() net.Addr {
-	return c.conn.LocalAddr()
-}
-
-func (c *ConnWarp) RemoteAddr() net.Addr {
-	return c.conn.RemoteAddr()
-}
-
-func (c *ConnWarp) SetDeadline(t time.Time) error {
-	return c.conn.SetDeadline(t)
-}
-
-func (c *ConnWarp) SetReadDeadline(t time.Time) error {
-	return c.conn.SetReadDeadline(t)
-}
-
-func (c *ConnWarp) SetWriteDeadline(t time.Time) error {
-	return c.conn.SetWriteDeadline(t)
-}
-
-func (d *DialerWarp) Dial(network, addr string) (c net.Conn, err error) {
-	conn, err := d.dialer.Dial(network, addr)
-	if err != nil {
-		return nil, err
-	}
-	return &ConnWarp{conn: conn}, nil
-}

download/common/fetcher.go

@@ -1,29 +0,0 @@
-package common
-
-// 对应协议的下载支持
-type Fetcher interface {
-	BaseFetch
-	// 支持的协议列表
-	Protocols() []string
-	// 解析请求
-	Resolve(req *Request) (*Resource, error)
-	// 创建任务
-	Create(res *Resource, opts *Options) (Process, error)
-}
-
-type BaseFetch interface {
-	InitCtl(ctl *Controller)
-	GetCtl() *Controller
-}
-
-type BaseFetcher struct {
-	ctl *Controller
-}
-
-func (b *BaseFetcher) InitCtl(ctl *Controller) {
-	b.ctl = ctl
-}
-
-func (b *BaseFetcher) GetCtl() *Controller {
-	return b.ctl
-}

download/downloader.go

@@ -1,81 +0,0 @@
-package download
-
-import (
-	"errors"
-	"github.com/google/uuid"
-	"github.com/monkeyWie/gopeed-core/download/common"
-	"net/url"
-	"strings"
-)
-
-type TaskInfo struct {
-	ID     string
-	Res    *common.Resource
-	Opts   *common.Options
-	Status common.Status
-	Files  map[string]*common.FileInfo
-
-	process common.Process
-}
-
-type Downloader struct {
-	fetches map[string]common.Fetcher
-	tasks   map[string]*TaskInfo
-	*common.Controller
-}
-
-func NewDownloader(fetchers ...common.Fetcher) *Downloader {
-	d := &Downloader{Controller: common.NewController()}
-	d.fetches = make(map[string]common.Fetcher)
-	for _, f := range fetchers {
-		for _, p := range f.Protocols() {
-			d.fetches[strings.ToUpper(p)] = f
-		}
-		f.InitCtl(d.Controller)
-	}
-	d.tasks = make(map[string]*TaskInfo)
-	return d
-}
-
-func (d *Downloader) getFetcher(URL string) (common.Fetcher, error) {
-	url, err := url.Parse(URL)
-	if err != nil {
-		return nil, err
-	}
-	if fetch, ok := d.fetches[strings.ToUpper(url.Scheme)]; ok {
-		return fetch, nil
-	}
-	return nil, errors.New("unsupported protocol")
-}
-
-func (d *Downloader) Resolve(req *common.Request) (*common.Resource, error) {
-	fetcher, err := d.getFetcher(req.URL)
-	if err != nil {
-		return nil, err
-	}
-	return fetcher.Resolve(req)
-}
-
-func (d *Downloader) Create(res *common.Resource, opts *common.Options) error {
-	fetcher, err := d.getFetcher(res.Req.URL)
-	if err != nil {
-		return err
-	}
-	process, err := fetcher.Create(res, opts)
-	if err != nil {
-		return err
-	}
-	id := uuid.New().String()
-	d.tasks[id] = &TaskInfo{
-		ID:      id,
-		Res:     res,
-		Opts:    opts,
-		Status:  common.DownloadStatusReady,
-		process: process,
-	}
-	return process.Start()
-}
-
-func (d *Downloader) Pause(id string) {
-	d.tasks[id].process.Pause()
-}

download/downloader_test.go

@@ -1,40 +0,0 @@
-package download
-
-import (
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/download/common"
-	"github.com/monkeyWie/gopeed-core/download/http"
-	"testing"
-)
-
-func TestDownloader_Resolve(t *testing.T) {
-	downloader := buildDownloader()
-	res, err := downloader.Resolve(&common.Request{
-		URL: "http://192.168.200.163:8088/docker-compose",
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	fmt.Println(res)
-}
-
-func TestDownloader_Create(t *testing.T) {
-	downloader := buildDownloader()
-	res, err := downloader.Resolve(&common.Request{
-		URL: "http://192.168.200.163:8088/docker-compose",
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	err = downloader.Create(res, &common.Options{
-		Path:        "E:\\test\\gopeed\\http",
-		Connections: 4,
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-}
-
-func buildDownloader() *Downloader {
-	return NewDownloader(&http.Fetcher{BaseFetcher: &common.BaseFetcher{}})
-}

download/http/fetcher.go

@@ -1,167 +0,0 @@
-package http
-
-import (
-	"bytes"
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/download/common"
-	"github.com/monkeyWie/gopeed-core/download/http/model"
-	"io/ioutil"
-	"mime"
-	"net/http"
-	"net/http/cookiejar"
-	"net/url"
-	"strconv"
-	"strings"
-	"time"
-)
-
-type RequestError struct {
-	Code int
-	Msg  string
-}
-
-func NewRequestError(code int, msg string) *RequestError {
-	return &RequestError{Code: code, Msg: msg}
-}
-
-func (re *RequestError) Error() string {
-	return fmt.Sprintf("http request fail,code:%d", re.Code)
-}
-
-type Fetcher struct {
-	*common.BaseFetcher
-}
-
-func NewFetcher() *Fetcher {
-	return &Fetcher{BaseFetcher: &common.BaseFetcher{}}
-}
-
-func (h *Fetcher) Protocols() []string {
-	return []string{"HTTP", "HTTPS"}
-}
-
-func (h *Fetcher) Resolve(req *common.Request) (*common.Resource, error) {
-	httpReq, err := BuildRequest(req)
-	if err != nil {
-		return nil, err
-	}
-	client := BuildClient()
-	// 只访问一个字节，测试资源是否支持Range请求
-	httpReq.Header.Set(common.HttpHeaderRange, fmt.Sprintf(common.HttpHeaderRangeFormat, 0, 0))
-	httpResp, err := client.Do(httpReq)
-	if err != nil {
-		return nil, err
-	}
-	// 拿到响应头就关闭，不用加defer
-	httpResp.Body.Close()
-	res := &common.Resource{
-		Req:   req,
-		Range: false,
-		Files: []*common.FileInfo{},
-	}
-	if common.HttpCodePartialContent == httpResp.StatusCode {
-		// 返回206响应码表示支持断点下载
-		res.Range = true
-		// 解析资源大小: bytes 0-1000/1001 => 1001
-		contentTotal := subLastSlash(httpResp.Header.Get(common.HttpHeaderContentRange))
-		if contentTotal != "" {
-			parse, err := strconv.ParseInt(contentTotal, 10, 64)
-			if err != nil {
-				return nil, err
-			}
-			res.Size = parse
-		}
-	} else if common.HttpCodeOK == httpResp.StatusCode {
-		// 返回200响应码，不支持断点下载，通过Content-Length头获取文件大小，获取不到的话可能是chunked编码
-		contentLength := httpResp.Header.Get(common.HttpHeaderContentLength)
-		if contentLength != "" {
-			parse, err := strconv.ParseInt(contentLength, 10, 64)
-			if err != nil {
-				return nil, err
-			}
-			res.Size = parse
-		}
-	} else {
-		return nil, NewRequestError(httpResp.StatusCode, httpResp.Status)
-	}
-	file := &common.FileInfo{
-		Size: res.Size,
-	}
-	contentDisposition := httpResp.Header.Get(common.HttpHeaderContentDisposition)
-	if contentDisposition != "" {
-		_, params, _ := mime.ParseMediaType(contentDisposition)
-		filename := params["filename"]
-		if filename != "" {
-			file.Name = filename
-		}
-	}
-	// Get file name by URL
-	if file.Name == "" {
-		parse, err := url.Parse(req.URL)
-		if err == nil {
-			// e.g. /files/test.txt => test.txt
-			file.Name = subLastSlash(parse.Path)
-		}
-	}
-	// unknown file name
-	if file.Name == "" {
-		file.Name = "unknown"
-	}
-	res.Files = append(res.Files, file)
-	return res, nil
-}
-
-func (h *Fetcher) Create(res *common.Resource, opts *common.Options) (common.Process, error) {
-	if opts.Connections != 1 && !res.Range {
-		opts.Connections = 1
-	}
-	return NewProcess(h, res, opts), nil
-}
-
-func subLastSlash(str string) string {
-	if str == "" {
-		return ""
-	}
-	index := strings.LastIndex(str, "/")
-	if index != -1 {
-		return str[index+1:]
-	}
-	return ""
-}
-
-func BuildClient() *http.Client {
-	// Cookie handle
-	jar, _ := cookiejar.New(nil)
-	return &http.Client{
-		Jar:     jar,
-		Timeout: time.Second * 10,
-	}
-}
-
-func BuildRequest(req *common.Request) (*http.Request, error) {
-	url, err := url.Parse(req.URL)
-	if err != nil {
-		return nil, err
-	}
-	httpReq := &http.Request{
-		URL:    url,
-		Header: map[string][]string{},
-	}
-
-	if req.Extra != nil {
-		if extra, ok := req.Extra.(model.Extra); ok {
-			if extra.Method != "" {
-				httpReq.Method = extra.Method
-			} else {
-				httpReq.Method = http.MethodGet
-			}
-			if len(extra.Header) > 0 {
-				for k, v := range extra.Header {
-					httpReq.Header[k] = []string{v}
-				}
-			}
-			httpReq.Body = ioutil.NopCloser(bytes.NewBufferString(extra.Body))
-		}
-	}
-	return httpReq, nil
-}

download/http/fetcher_test.go

@@ -1,307 +0,0 @@
-package http
-
-import (
-	"crypto/md5"
-	"encoding/hex"
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/download/common"
-	"io"
-	"math/rand"
-	"net"
-	"net/http"
-	"os"
-	"reflect"
-	"testing"
-	"time"
-)
-
-const testDir = "./"
-const buildSize = 200 * 1024 * 1024
-const buildName = "build.data"
-const buildFile = testDir + buildName
-const downloadName = "download.data"
-const downloadFile = testDir + downloadName
-
-func TestFetcher_Resolve(t *testing.T) {
-	testResolve(startTestFileServer, &common.Resource{
-		Size:  buildSize,
-		Range: true,
-		Files: []*common.FileInfo{
-			{
-				Name: buildName,
-				Size: buildSize,
-			},
-		},
-	}, t)
-	testResolve(startTestChunkedServer, &common.Resource{
-		Size:  0,
-		Range: false,
-		Files: []*common.FileInfo{
-			{
-				Name: buildName,
-				Size: 0,
-			},
-		},
-	}, t)
-}
-
-func testResolve(startTestServer func() net.Listener, want *common.Resource, t *testing.T) {
-	listener := startTestServer()
-	defer listener.Close()
-	fetcher := NewFetcher()
-	res, err := fetcher.Resolve(&common.Request{
-		URL: "http://" + listener.Addr().String() + "/" + buildName,
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	res.Req = nil
-	if !reflect.DeepEqual(want, res) {
-		t.Errorf("Resolve error = %v, want %v", res, want)
-	}
-}
-
-func TestFetcher_DownloadNormal(t *testing.T) {
-	listener := startTestFileServer()
-	defer listener.Close()
-	// 正常下载
-	downloadNormal(listener, 1, t)
-	downloadNormal(listener, 5, t)
-	downloadNormal(listener, 8, t)
-	downloadNormal(listener, 16, t)
-}
-
-func TestFetcher_DownloadContinue(t *testing.T) {
-	listener := startTestFileServer()
-	defer listener.Close()
-	// 暂停继续
-	downloadContinue(listener, 1, t)
-	fmt.Println("d1")
-	downloadContinue(listener, 5, t)
-	fmt.Println("d5")
-	downloadContinue(listener, 8, t)
-	fmt.Println("d8")
-	downloadContinue(listener, 16, t)
-}
-
-func TestFetcher_DownloadChunked(t *testing.T) {
-	listener := startTestChunkedServer()
-	defer listener.Close()
-	// chunked编码下载
-	//downloadNormal(listener, 1, t)
-	downloadContinue(listener, 1, t)
-}
-
-func TestFetcher_DownloadRetry(t *testing.T) {
-	listener := startTestRetryServer()
-	defer listener.Close()
-	// chunked编码下载
-	downloadNormal(listener, 1, t)
-}
-
-func TestFetcher_DownloadError(t *testing.T) {
-	listener := startTestErrorServer()
-	defer listener.Close()
-	// chunked编码下载
-	downloadError(listener, 1, t)
-}
-
-func startTestFileServer() net.Listener {
-	return startTestServer(func() http.Handler {
-		return http.FileServer(http.Dir(testDir))
-	})
-}
-
-func startTestChunkedServer() net.Listener {
-	return startTestServer(func() http.Handler {
-		mux := http.NewServeMux()
-		mux.HandleFunc("/"+buildName, func(writer http.ResponseWriter, request *http.Request) {
-			file, err := os.Open(buildFile)
-			if err != nil {
-				panic(err)
-			}
-			defer file.Close()
-			io.Copy(writer, file)
-		})
-		return mux
-	})
-}
-
-func startTestRetryServer() net.Listener {
-	counter := 0
-	return startTestServer(func() http.Handler {
-		mux := http.NewServeMux()
-		mux.HandleFunc("/"+buildName, func(writer http.ResponseWriter, request *http.Request) {
-			counter++
-			if counter != 1 && counter < 5 {
-				writer.WriteHeader(500)
-				return
-			}
-			file, err := os.Open(buildFile)
-			if err != nil {
-				panic(err)
-			}
-			defer file.Close()
-			io.Copy(writer, file)
-		})
-		return mux
-	})
-}
-
-func startTestErrorServer() net.Listener {
-	counter := 0
-	return startTestServer(func() http.Handler {
-		mux := http.NewServeMux()
-		mux.HandleFunc("/"+buildName, func(writer http.ResponseWriter, request *http.Request) {
-			counter++
-			if counter != 1 {
-				writer.WriteHeader(500)
-				return
-			}
-		})
-		return mux
-	})
-}
-
-func startTestServer(serverHandle func() http.Handler) net.Listener {
-	listener, err := net.Listen("tcp", "127.0.0.1:0")
-	if err != nil {
-		panic(err)
-	}
-	file, err := os.Create(buildFile)
-	if err != nil {
-		panic(err)
-	}
-	// 随机生成一个文件
-	l := int64(8192)
-	buf := make([]byte, l)
-	size := int64(0)
-	for {
-		_, err := rand.Read(buf)
-		if err != nil {
-			panic(err)
-		}
-		if size+l >= buildSize {
-			file.WriteAt(buf[0:buildSize-size], size)
-			break
-		}
-		file.WriteAt(buf, size)
-		size += l
-	}
-	server := &http.Server{}
-	server.Handler = serverHandle()
-	go server.Serve(listener)
-
-	return &delFileListener{
-		File:     file,
-		Listener: listener,
-	}
-}
-
-type delFileListener struct {
-	*os.File
-	net.Listener
-}
-
-func (c *delFileListener) Close() error {
-	defer func() {
-		c.File.Close()
-		if err := ifExistAndRemove(c.File.Name()); err != nil {
-			fmt.Println(err)
-		}
-		if err := ifExistAndRemove(downloadFile); err != nil {
-			fmt.Println(err)
-		}
-	}()
-	return c.Listener.Close()
-}
-
-func ifExistAndRemove(name string) error {
-	if _, err := os.Stat(name); !os.IsNotExist(err) {
-		return os.Remove(name)
-	}
-	return nil
-}
-
-func downloadReady(listener net.Listener, connections int, t *testing.T) common.Process {
-	fetcher := NewFetcher()
-	fetcher.InitCtl(common.NewController())
-	res, err := fetcher.Resolve(&common.Request{
-		URL: "http://" + listener.Addr().String() + "/" + buildName,
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	process, err := fetcher.Create(res, &common.Options{
-		Name:        downloadName,
-		Path:        testDir,
-		Connections: connections,
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	return process
-
-}
-
-func downloadNormal(listener net.Listener, connections int, t *testing.T) {
-	process := downloadReady(listener, connections, t)
-	err := process.Start()
-	if err != nil {
-		t.Fatal(err)
-	}
-	want := fileMd5(buildFile)
-	got := fileMd5(downloadFile)
-	if want != got {
-		t.Errorf("Download error = %v, want %v", got, want)
-	}
-}
-
-func downloadContinue(listener net.Listener, connections int, t *testing.T) {
-	process := downloadReady(listener, connections, t)
-	go func() {
-		err := process.Start()
-		if err != nil && err != common.PauseErr {
-			t.Fatal(err)
-		}
-	}()
-	time.Sleep(time.Millisecond * 200)
-	if err := process.Pause(); err != nil {
-		t.Fatal(err)
-	}
-	time.Sleep(time.Millisecond * 200)
-	if err := process.Continue(); err != nil {
-		t.Fatal(err)
-	}
-	want := fileMd5(buildFile)
-	got := fileMd5(downloadFile)
-	if want != got {
-		t.Errorf("Download error = %v, want %v", got, want)
-	}
-}
-
-func downloadError(listener net.Listener, connections int, t *testing.T) {
-	process := downloadReady(listener, connections, t)
-	err := process.Start()
-	if err == nil {
-		t.Errorf("Download error = %v, want %v", err, nil)
-	}
-}
-
-func fileMd5(filePath string) string {
-	file, err := os.Open(filePath)
-	if err != nil {
-		panic(err)
-	}
-	// Tell the program to call the following function when the current function returns
-	defer file.Close()
-
-	// Open a new hash interface to write to
-	hash := md5.New()
-
-	// Copy the file in the hash interface and check for any error
-	if _, err := io.Copy(hash, file); err != nil {
-		return ""
-	}
-	return hex.EncodeToString(hash.Sum(nil))
-}

download/http/model/chunk.go

@@ -1,20 +0,0 @@
-package model
-
-import (
-	"github.com/monkeyWie/gopeed-core/download/common"
-)
-
-type Chunk struct {
-	Status     common.Status
-	Begin      int64
-	End        int64
-	Downloaded int64
-}
-
-func NewChunk(begin int64, end int64) *Chunk {
-	return &Chunk{
-		Status: common.DownloadStatusReady,
-		Begin:  begin,
-		End:    end,
-	}
-}

download/http/model/extra.go

@@ -1,7 +0,0 @@
-package model
-
-type Extra struct {
-	Method string
-	Header map[string]string
-	Body   string
-}

download/http/process.go

@@ -1,245 +0,0 @@
-package http
-
-import (
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/download/common"
-	"github.com/monkeyWie/gopeed-core/download/http/model"
-	"io"
-	"net/http"
-	"path/filepath"
-	"sync"
-)
-
-type Process struct {
-	fetcher *Fetcher
-
-	res     *common.Resource
-	opts    *common.Options
-	status  common.Status
-	clients []*http.Response
-	chunks  []*model.Chunk
-
-	pauseCond *sync.Cond
-}
-
-func NewProcess(fetcher *Fetcher, res *common.Resource, opts *common.Options) *Process {
-	return &Process{
-		fetcher: fetcher,
-		res:     res,
-		opts:    opts,
-		status:  common.DownloadStatusReady,
-
-		pauseCond: sync.NewCond(&sync.Mutex{}),
-	}
-}
-
-func (p *Process) Start() error {
-	ctl := p.fetcher.GetCtl()
-	// 创建文件
-	name := p.name()
-	_, err := ctl.Touch(name, p.res.Size)
-	if err != nil {
-		return err
-	}
-	defer p.close()
-	p.status = common.DownloadStatusStart
-	if p.res.Range {
-		// 每个连接平均需要下载的分块大小
-		chunkSize := p.res.Size / int64(p.opts.Connections)
-		p.chunks = make([]*model.Chunk, p.opts.Connections)
-		p.clients = make([]*http.Response, p.opts.Connections)
-		for i := 0; i < p.opts.Connections; i++ {
-			var (
-				begin = chunkSize * int64(i)
-				end   int64
-			)
-			if i == p.opts.Connections-1 {
-				// 最后一个分块需要保证把文件下载完
-				end = p.res.Size
-			} else {
-				end = begin + chunkSize
-			}
-			chunk := model.NewChunk(begin, end)
-			p.chunks[i] = chunk
-		}
-	} else {
-		// 只支持单连接下载
-		p.chunks = make([]*model.Chunk, 1)
-		p.clients = make([]*http.Response, 1)
-		p.chunks[0] = model.NewChunk(0, 0)
-	}
-	return p.fetch()
-}
-
-func (p *Process) Pause() error {
-	p.pauseCond.L.Lock()
-	defer p.pauseCond.L.Unlock()
-	if common.DownloadStatusStart != p.status {
-		return nil
-	}
-	p.status = common.DownloadStatusPause
-	p.stop()
-	// 释放锁，并等待下载结束
-	p.pauseCond.Wait()
-	return nil
-}
-
-func (p *Process) Continue() error {
-	if func() bool {
-		p.pauseCond.L.Lock()
-		defer p.pauseCond.L.Unlock()
-		if common.DownloadStatusPause != p.status && common.DownloadStatusError != p.status {
-			return true
-		}
-		p.status = common.DownloadStatusStart
-		return false
-	}() {
-		return nil
-	}
-
-	var (
-		ctl  = p.fetcher.GetCtl()
-		name = p.name()
-	)
-	_, err := ctl.Open(name)
-	if err != nil {
-		return err
-	}
-	defer ctl.Close(name)
-	return p.fetch()
-}
-
-func (p *Process) Delete() error {
-	panic("implement me")
-}
-
-func (p *Process) close() error {
-	return p.fetcher.GetCtl().Close(p.name())
-}
-
-func (p *Process) name() string {
-	// 创建文件
-	var filename = p.opts.Name
-	if filename == "" {
-		filename = p.res.Files[0].Name
-	}
-	return filepath.Join(p.opts.Path, filename)
-}
-
-func (p *Process) fetch() error {
-	errCh := make(chan error, p.opts.Connections)
-	defer close(errCh)
-
-	for i := 0; i < p.opts.Connections; i++ {
-		go func(i int) {
-			errCh <- p.fetchChunk(i, p.name(), p.chunks[i])
-		}(i)
-	}
-
-	var retErr error
-	for i := 0; i < p.opts.Connections; i++ {
-		err := <-errCh
-		if err != nil && retErr == nil {
-			retErr = err
-			// 有一个连接失败就立即终止下载
-			if retErr != common.PauseErr {
-				func() {
-					p.pauseCond.L.Lock()
-					defer p.pauseCond.L.Unlock()
-					p.stop()
-				}()
-			}
-		}
-	}
-	p.pauseCond.Signal()
-	return retErr
-}
-
-func (p *Process) stop() {
-	if len(p.clients) > 0 {
-		for _, client := range p.clients {
-			fmt.Println("client close")
-			if client != nil {
-				client.Body.Close()
-			}
-		}
-	}
-}
-
-func (p *Process) fetchChunk(index int, name string, chunk *model.Chunk) (err error) {
-	httpReq, err := BuildRequest(p.res.Req)
-	if err != nil {
-		return err
-	}
-	var (
-		client = BuildClient()
-		buf    = make([]byte, 8192)
-	)
-	// 重试5次
-	for i := 0; i < 5; i++ {
-		var (
-			resp  *http.Response
-			retry bool
-		)
-		if p.res.Range {
-			httpReq.Header.Set(common.HttpHeaderRange,
-				fmt.Sprintf(common.HttpHeaderRangeFormat, chunk.Begin+chunk.Downloaded, chunk.End))
-		} else {
-			chunk.Downloaded = 0
-		}
-		err = func() error {
-			p.pauseCond.L.Lock()
-			defer p.pauseCond.L.Unlock()
-			if p.status == common.DownloadStatusPause {
-				return common.PauseErr
-			}
-			resp, err = client.Do(httpReq)
-			if err != nil {
-				return err
-			}
-			p.clients[index] = resp
-			if resp.StatusCode != common.HttpCodeOK && resp.StatusCode != common.HttpCodePartialContent {
-				err = NewRequestError(resp.StatusCode, resp.Status)
-				return err
-			}
-			return nil
-		}()
-		if err != nil {
-			if err == common.PauseErr {
-				return err
-			}
-			// 请求失败重试
-			continue
-		}
-		retry, err = func() (bool, error) {
-			defer resp.Body.Close()
-			for {
-				n, err := resp.Body.Read(buf)
-				if n > 0 {
-					_, err := p.fetcher.GetCtl().Write(name, chunk.Begin+chunk.Downloaded, buf[:n])
-					if err != nil {
-						return false, err
-					}
-					chunk.Downloaded += int64(n)
-				}
-				if err != nil {
-					if err != io.EOF {
-						return true, err
-					}
-					break
-				}
-			}
-			return false, nil
-		}()
-		if err == nil || !retry {
-			// 下载成功，跳出重试
-			break
-		}
-	}
-	if err != nil {
-		p.chunks[index].Status = common.DownloadStatusError
-	} else {
-		p.chunks[index].Status = common.DownloadStatusDone
-	}
-	return
-}

go.mod

@@ -1,12 +1,73 @@
-module github.com/monkeyWie/gopeed-core
+module github.com/GopeedLab/gopeed
 
-go 1.13
+go 1.19
 
 require (
-	github.com/RoaringBitmap/roaring v0.4.21
-	github.com/cenkalti/mse v0.0.0-20140930130441-6ef65f170972
-	github.com/google/uuid v1.1.1
-	github.com/marksamman/bencode v0.0.0-20150821143521-dc84f26e086e
-	github.com/sirupsen/logrus v1.4.2
-	golang.org/x/net v0.0.0-20200707034311-ab3426394381
+	github.com/anacrolix/torrent v1.46.0
+	github.com/gorilla/handlers v1.5.1
+	github.com/gorilla/mux v1.8.0
+	github.com/matoous/go-nanoid/v2 v2.0.0
+	go.etcd.io/bbolt v1.3.6
+	golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde
+)
+
+require (
+	crawshaw.io/sqlite v0.3.3-0.20210127221821-98b1f83c5508 // indirect
+	github.com/RoaringBitmap/roaring v1.0.1-0.20220510143707-3f418c4f42a4 // indirect
+	github.com/ajwerner/btree v0.0.0-20211221152037-f427b3e689c0 // indirect
+	github.com/anacrolix/chansync v0.3.0 // indirect
+	github.com/anacrolix/dht/v2 v2.16.2-0.20220311024416-dd658f18fd51 // indirect
+	github.com/anacrolix/envpprof v1.2.1 // indirect
+	github.com/anacrolix/generics v0.0.0-20220618083756-f99e35403a60 // indirect
+	github.com/anacrolix/go-libutp v1.2.0 // indirect
+	github.com/anacrolix/log v0.13.1 // indirect
+	github.com/anacrolix/missinggo v1.3.0 // indirect
+	github.com/anacrolix/missinggo/perf v1.0.0 // indirect
+	github.com/anacrolix/missinggo/v2 v2.7.0 // indirect
+	github.com/anacrolix/mmsg v1.0.0 // indirect
+	github.com/anacrolix/multiless v0.2.1-0.20211218050420-533661eef5dc // indirect
+	github.com/anacrolix/stm v0.3.0 // indirect
+	github.com/anacrolix/sync v0.4.0 // indirect
+	github.com/anacrolix/upnp v0.1.3-0.20220123035249-922794e51c96 // indirect
+	github.com/anacrolix/utp v0.1.0 // indirect
+	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/benbjohnson/immutable v0.3.0 // indirect
+	github.com/bits-and-blooms/bitset v1.2.0 // indirect
+	github.com/bradfitz/iter v0.0.0-20191230175014-e8f45d346db8 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/edsrzf/mmap-go v1.1.0 // indirect
+	github.com/felixge/httpsnoop v1.0.1 // indirect
+	github.com/google/btree v1.0.1 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/huandu/xstrings v1.3.2 // indirect
+	github.com/lispad/go-generics-tools v1.0.0 // indirect
+	github.com/mschoch/smat v0.2.0 // indirect
+	github.com/pion/datachannel v1.5.2 // indirect
+	github.com/pion/dtls/v2 v2.1.2 // indirect
+	github.com/pion/ice/v2 v2.1.20 // indirect
+	github.com/pion/interceptor v0.1.7 // indirect
+	github.com/pion/logging v0.2.2 // indirect
+	github.com/pion/mdns v0.0.5 // indirect
+	github.com/pion/randutil v0.1.0 // indirect
+	github.com/pion/rtcp v1.2.9 // indirect
+	github.com/pion/rtp v1.7.4 // indirect
+	github.com/pion/sctp v1.8.2 // indirect
+	github.com/pion/sdp/v3 v3.0.4 // indirect
+	github.com/pion/srtp/v2 v2.0.5 // indirect
+	github.com/pion/stun v0.3.5 // indirect
+	github.com/pion/transport v0.13.0 // indirect
+	github.com/pion/turn/v2 v2.0.6 // indirect
+	github.com/pion/udp v0.1.1 // indirect
+	github.com/pion/webrtc/v3 v3.1.24-0.20220208053747-94262c1b2b38 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/rs/dnscache v0.0.0-20210201191234-295bba877686 // indirect
+	github.com/tidwall/btree v1.3.1 // indirect
+	golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838 // indirect
+	golang.org/x/exp v0.0.0-20220428152302-39d4317da171 // indirect
+	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd // indirect
+	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect
+	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )

go.sum

@@ -1,56 +1,470 @@
-github.com/RoaringBitmap/roaring v0.4.21 h1:WJ/zIlNX4wQZ9x8Ey33O1UaD9TCTakYsdLFSBcTwH+8=
-github.com/RoaringBitmap/roaring v0.4.21/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
-github.com/cenkalti/mse v0.0.0-20140930130441-6ef65f170972 h1:FvAasVrPm/VUO8M0odLDqA9Y7VbALYq3PRAwmWGPw78=
-github.com/cenkalti/mse v0.0.0-20140930130441-6ef65f170972/go.mod h1:wGf99xKTJ8f/a8cC1inMqFz9cGEzISLLid5F6i5fI/g=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797 h1:yDf7ARQc637HoxDho7xjqdvO5ZA2Yb+xzv/fOnnvZzw=
+crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797/go.mod h1:sXBiorCo8c46JlQV3oXPKINnZ8mcqnye1EkVkqsectk=
+crawshaw.io/sqlite v0.3.2/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
+crawshaw.io/sqlite v0.3.3-0.20210127221821-98b1f83c5508 h1:fILCBBFnjnrQ0whVJlGhfv1E/QiaFDNtGFBObEVRnYg=
+crawshaw.io/sqlite v0.3.3-0.20210127221821-98b1f83c5508/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
+filippo.io/edwards25519 v1.0.0-rc.1 h1:m0VOOB23frXZvAOK44usCgLWvtsxIoMCTBGJZlpmGfU=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/RoaringBitmap/roaring v0.4.7/go.mod h1:8khRDP4HmeXns4xIj9oGrKSz7XTQiJx2zgh7AcNke4w=
+github.com/RoaringBitmap/roaring v0.4.17/go.mod h1:D3qVegWTmfCaX4Bl5CrBE9hfrSrrXIr8KVNvRsDi1NI=
+github.com/RoaringBitmap/roaring v0.4.23/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
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internal/controller/controller.go

@@ -0,0 +1,101 @@
+package controller
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+)
+
+type Controller struct {
+	GetConfig func(v any) (bool, error)
+	FileController
+	//ContextDialer() (proxy.Dialer, error)
+}
+
+type FileController interface {
+	Touch(name string, size int64) (file *os.File, err error)
+}
+
+type DefaultFileController struct {
+}
+
+func NewController() *Controller {
+	return &Controller{
+		FileController: &DefaultFileController{},
+		GetConfig: func(v any) (bool, error) {
+			return false, nil
+		},
+	}
+}
+
+func (c *DefaultFileController) Touch(name string, size int64) (file *os.File, err error) {
+	dir := filepath.Dir(name)
+	if err = os.MkdirAll(dir, os.ModePerm); err != nil {
+		return
+	}
+	file, err = os.Create(name)
+	if err != nil && !errors.Is(err, os.ErrExist) {
+		return
+	}
+	if size > 0 {
+		err = os.Truncate(name, size)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return
+}
+
+/*func (c *DefaultController) ContextDialer() (proxy.Dialer, error) {
+	// return proxy.SOCKS5("tpc", "127.0.0.1:9999", nil, nil)
+	var dialer proxy.Dialer
+	return &DialerWarp{dialer: dialer}, nil
+}
+
+type DialerWarp struct {
+	dialer proxy.Dialer
+}
+
+type ConnWarp struct {
+	conn net.Conn
+}
+
+func (c *ConnWarp) Read(b []byte) (n int, err error) {
+	return c.conn.Read(b)
+}
+
+func (c *ConnWarp) Write(b []byte) (n int, err error) {
+	return c.conn.Write(b)
+}
+
+func (c *ConnWarp) Close() error {
+	return c.conn.Close()
+}
+
+func (c *ConnWarp) LocalAddr() net.Addr {
+	return c.conn.LocalAddr()
+}
+
+func (c *ConnWarp) RemoteAddr() net.Addr {
+	return c.conn.RemoteAddr()
+}
+
+func (c *ConnWarp) SetDeadline(t time.Time) error {
+	return c.conn.SetDeadline(t)
+}
+
+func (c *ConnWarp) SetReadDeadline(t time.Time) error {
+	return c.conn.SetReadDeadline(t)
+}
+
+func (c *ConnWarp) SetWriteDeadline(t time.Time) error {
+	return c.conn.SetWriteDeadline(t)
+}
+
+func (d *DialerWarp) Dial(network, addr string) (c net.Conn, err error) {
+	conn, err := d.dialer.Dial(network, addr)
+	if err != nil {
+		return nil, err
+	}
+	return &ConnWarp{conn: conn}, nil
+}*/

internal/fetcher/fetcher.go

@@ -0,0 +1,87 @@
+package fetcher
+
+import (
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"path"
+)
+
+// Fetcher defines the interface for a download protocol.
+// One fetcher for each download task
+type Fetcher interface {
+	// Name return the name of the protocol.
+	Name() string
+
+	Setup(ctl *controller.Controller) error
+	// Resolve resource info from request
+	Resolve(req *base.Request) error
+	// Create ready to download, but not started
+	Create(opts *base.Options) error
+	Start() error
+	Pause() error
+	Continue() error
+	Close() error
+
+	// Meta returns the meta information of the download.
+	Meta() *FetcherMeta
+	// Progress returns the progress of the download.
+	Progress() Progress
+	// Wait for the download to complete, this method will block until the download is done.
+	Wait() error
+}
+
+// FetcherMeta defines the meta information of a fetcher.
+type FetcherMeta struct {
+	Req  *base.Request  `json:"req"`
+	Res  *base.Resource `json:"res"`
+	Opts *base.Options  `json:"opts"`
+}
+
+func (m *FetcherMeta) Filepath(file *base.FileInfo) string {
+	finalName := m.Opts.Name
+	if finalName == "" {
+		finalName = file.Name
+	}
+	return path.Join(m.Opts.Path, m.Res.RootDir, finalName)
+}
+
+// FetcherBuilder defines the interface for a fetcher builder.
+type FetcherBuilder interface {
+	// Schemes returns the schemes supported by the fetcher.
+	Schemes() []string
+	// Build returns a new fetcher.
+	Build() Fetcher
+
+	// Store fetcher
+	Store(fetcher Fetcher) (any, error)
+	// Restore fetcher
+	Restore() (v any, f func(meta *FetcherMeta, v any) Fetcher)
+}
+
+type DefaultFetcher struct {
+	Ctl    *controller.Controller
+	Meta   *FetcherMeta
+	DoneCh chan error
+}
+
+func (f *DefaultFetcher) Setup(ctl *controller.Controller) (err error) {
+	f.Ctl = ctl
+	f.DoneCh = make(chan error, 1)
+	return
+}
+
+func (f *DefaultFetcher) Wait() (err error) {
+	return <-f.DoneCh
+}
+
+// Progress is a map of the progress of each file in the torrent.
+type Progress []int64
+
+// TotalDownloaded returns the total downloaded bytes.
+func (p Progress) TotalDownloaded() int64 {
+	total := int64(0)
+	for _, d := range p {
+		total += d
+	}
+	return total
+}

internal/protocol/bt/config.go

@@ -0,0 +1,5 @@
+package bt
+
+type config struct {
+	Trackers []string `json:"trackers"`
+}

internal/protocol/bt/fetcher.go

@@ -0,0 +1,246 @@
+package bt
+
+import (
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/util"
+	"github.com/anacrolix/torrent"
+	"github.com/anacrolix/torrent/metainfo"
+	"github.com/anacrolix/torrent/storage"
+	"path"
+	"path/filepath"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+var client *torrent.Client
+
+type Fetcher struct {
+	ctl *controller.Controller
+
+	torrent *torrent.Torrent
+	meta    *fetcher.FetcherMeta
+
+	ready    atomic.Bool
+	progress fetcher.Progress
+
+	torrentPaths map[string]string
+}
+
+func (f *Fetcher) Name() string {
+	return "bt"
+}
+
+func (f *Fetcher) Setup(ctl *controller.Controller) (err error) {
+	f.ctl = ctl
+	if f.meta == nil {
+		f.meta = &fetcher.FetcherMeta{}
+	}
+	var once sync.Once
+	once.Do(func() {
+		cfg := torrent.NewDefaultClientConfig()
+		cfg.ListenPort = 0
+
+		// Support custom download path for each torrent
+		pieceCompletion, err := storage.NewDefaultPieceCompletionForDir(cfg.DataDir)
+		if err != nil {
+			pieceCompletion = storage.NewMapPieceCompletion()
+		}
+		clientImplCloser := storage.NewFileOpts(storage.NewFileClientOpts{
+			ClientBaseDir: cfg.DataDir,
+			TorrentDirMaker: func(baseDir string, info *metainfo.Info, infoHash metainfo.Hash) string {
+				if dir, ok := f.torrentPaths[infoHash.String()]; ok {
+					return dir
+				}
+				return baseDir
+			},
+			PieceCompletion: pieceCompletion,
+		})
+		cfg.DefaultStorage = clientImplCloser
+		client, err = torrent.NewClient(cfg)
+		if err != nil {
+			return
+		}
+
+		f.torrentPaths = make(map[string]string)
+	})
+	return
+}
+
+func (f *Fetcher) Resolve(req *base.Request) error {
+	if err := f.addTorrent(req.URL); err != nil {
+		return err
+	}
+	defer f.torrent.Drop()
+	res := &base.Resource{
+		Name:    f.torrent.Name(),
+		Range:   true,
+		RootDir: f.torrent.Name(),
+		Files:   make([]*base.FileInfo, len(f.torrent.Files())),
+		Hash:    f.torrent.InfoHash().String(),
+	}
+	for i, file := range f.torrent.Files() {
+		res.Files[i] = &base.FileInfo{
+			Name: filepath.Base(file.DisplayPath()),
+			Path: util.Dir(file.Path()),
+			Size: file.Length(),
+		}
+		res.Size += file.Length()
+	}
+	f.meta.Req = req
+	f.meta.Res = res
+	return nil
+}
+
+func (f *Fetcher) Create(opts *base.Options) (err error) {
+	f.meta.Opts = opts
+	if len(opts.SelectFiles) == 0 {
+		opts.SelectFiles = make([]int, 0)
+		for i := range f.torrent.Files() {
+			opts.SelectFiles = append(opts.SelectFiles, i)
+		}
+	}
+	if opts.Path != "" {
+		f.torrentPaths[f.meta.Res.Hash] = path.Join(f.meta.Opts.Path, f.meta.Res.RootDir)
+	}
+
+	f.progress = make(fetcher.Progress, len(f.meta.Opts.SelectFiles))
+	f.ready.Store(false)
+	return nil
+}
+
+func (f *Fetcher) Start() (err error) {
+	if !f.ready.Load() {
+		if err = f.addTorrent(f.meta.Req.URL); err != nil {
+			return
+		}
+	}
+	files := f.torrent.Files()
+	if len(f.meta.Opts.SelectFiles) == len(files) {
+		f.torrent.DownloadAll()
+	} else {
+		for _, selectIndex := range f.meta.Opts.SelectFiles {
+			file := files[selectIndex]
+			file.Download()
+		}
+	}
+	return
+}
+
+func (f *Fetcher) Pause() (err error) {
+	f.ready.Store(false)
+	f.torrent.Drop()
+	return
+}
+
+func (f *Fetcher) Continue() (err error) {
+	return f.Start()
+}
+
+func (f *Fetcher) Close() (err error) {
+	f.torrent.Drop()
+	return nil
+}
+
+func (f *Fetcher) Wait() (err error) {
+	for {
+		if f.ready.Load() {
+			done := true
+			for _, selectIndex := range f.meta.Opts.SelectFiles {
+				file := f.torrent.Files()[selectIndex]
+				if file.BytesCompleted() < file.Length() {
+					done = false
+					break
+				}
+			}
+			if done {
+				// remove unselected files
+				for i, file := range f.torrent.Files() {
+					selected := false
+					for _, selectIndex := range f.meta.Opts.SelectFiles {
+						if i == selectIndex {
+							selected = true
+							break
+						}
+					}
+					if !selected {
+						util.SafeRemove(filepath.Join(f.meta.Opts.Path, file.Path()))
+					}
+				}
+				break
+			}
+		}
+		time.Sleep(time.Millisecond * 500)
+	}
+	return nil
+}
+
+func (f *Fetcher) Meta() *fetcher.FetcherMeta {
+	return f.meta
+}
+
+func (f *Fetcher) Progress() fetcher.Progress {
+	if !f.ready.Load() {
+		return f.progress
+	}
+	for i := range f.progress {
+		selectIndex := f.meta.Opts.SelectFiles[i]
+		file := f.torrent.Files()[selectIndex]
+		f.progress[i] = file.BytesCompleted()
+	}
+	return f.progress
+}
+
+func (f *Fetcher) addTorrent(url string) (err error) {
+	schema := util.ParseSchema(url)
+	if schema == "MAGNET" {
+		f.torrent, err = client.AddMagnet(url)
+	} else {
+		f.torrent, err = client.AddTorrentFromFile(url)
+	}
+	if err != nil {
+		return
+	}
+	var cfg config
+	exist, err := f.ctl.GetConfig(&cfg)
+	if err != nil {
+		return
+	}
+	if exist && len(cfg.Trackers) > 0 {
+		announceList := make([][]string, 0)
+		for _, tracker := range cfg.Trackers {
+			announceList = append(announceList, []string{tracker})
+		}
+		f.torrent.AddTrackers(announceList)
+	}
+	<-f.torrent.GotInfo()
+	f.ready.Store(true)
+	return
+}
+
+type FetcherBuilder struct {
+}
+
+var schemes = []string{"FILE", "MAGNET"}
+
+func (fb *FetcherBuilder) Schemes() []string {
+	return schemes
+}
+
+func (fb *FetcherBuilder) Build() fetcher.Fetcher {
+	return &Fetcher{}
+}
+
+func (fb *FetcherBuilder) Store(f fetcher.Fetcher) (data any, err error) {
+	return nil, nil
+}
+
+func (fb *FetcherBuilder) Restore() (v any, f func(meta *fetcher.FetcherMeta, v any) fetcher.Fetcher) {
+	return nil, func(meta *fetcher.FetcherMeta, v any) fetcher.Fetcher {
+		return &Fetcher{
+			meta: meta,
+		}
+	}
+}

internal/protocol/bt/fetcher_test.go

@@ -0,0 +1,69 @@
+package bt
+
+import (
+	"encoding/json"
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/internal/test"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"reflect"
+	"testing"
+)
+
+func TestFetcher_Resolve_Torrent(t *testing.T) {
+	doResolve(t, buildFetcher())
+}
+
+func TestFetcher_Config(t *testing.T) {
+	doResolve(t, buildConfigFetcher())
+}
+
+func doResolve(t *testing.T, fetcher fetcher.Fetcher) {
+	err := fetcher.Resolve(&base.Request{
+		URL: "./testdata/ubuntu-22.04-live-server-amd64.iso.torrent",
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	want := &base.Resource{
+		Name:    "ubuntu-22.04-live-server-amd64.iso",
+		Size:    1466714112,
+		Range:   true,
+		RootDir: "ubuntu-22.04-live-server-amd64.iso",
+		Files: []*base.FileInfo{
+			{
+				Name: "ubuntu-22.04-live-server-amd64.iso",
+				Size: 1466714112,
+			},
+		},
+		Hash: "8a55cfbd5ca5d11507364765936c4f9e55b253ed",
+	}
+	if !reflect.DeepEqual(want, fetcher.Meta().Res) {
+		t.Errorf("Resolve() got = %v, want %v", fetcher.Meta().Res, want)
+	}
+}
+
+func buildFetcher() fetcher.Fetcher {
+	fetcher := new(FetcherBuilder).Build()
+	fetcher.Setup(controller.NewController())
+	return fetcher
+}
+
+func buildConfigFetcher() fetcher.Fetcher {
+	fetcher := new(FetcherBuilder).Build()
+	newController := controller.NewController()
+	mockCfg := config{
+		Trackers: []string{
+			"udp://tracker.birkenwald.de:6969/announce",
+			"udp://tracker.bitsearch.to:1337/announce",
+		}}
+	newController.GetConfig = func(v any) (bool, error) {
+		if err := json.Unmarshal([]byte(test.ToJson(mockCfg)), v); err != nil {
+			return false, err
+		}
+		return true, nil
+	}
+	fetcher.Setup(newController)
+	return fetcher
+}

internal/protocol/http/config.go

@@ -0,0 +1,5 @@
+package http
+
+type config struct {
+	Connections int `json:"connections"`
+}

internal/protocol/http/fetcher.go

@@ -0,0 +1,485 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	fhttp "github.com/GopeedLab/gopeed/pkg/protocol/http"
+	"golang.org/x/sync/errgroup"
+	"io"
+	"mime"
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"os"
+	"path"
+	"strconv"
+	"time"
+)
+
+type RequestError struct {
+	Code int
+	Msg  string
+}
+
+func NewRequestError(code int, msg string) *RequestError {
+	return &RequestError{Code: code, Msg: msg}
+}
+
+func (re *RequestError) Error() string {
+	return fmt.Sprintf("http request fail,code:%d", re.Code)
+}
+
+type chunk struct {
+	Status     base.Status
+	Begin      int64
+	End        int64
+	Downloaded int64
+}
+
+func newChunk(begin int64, end int64) *chunk {
+	return &chunk{
+		Status: base.DownloadStatusReady,
+		Begin:  begin,
+		End:    end,
+	}
+}
+
+type Fetcher struct {
+	ctl    *controller.Controller
+	doneCh chan error
+
+	meta   *fetcher.FetcherMeta
+	status base.Status
+	chunks []*chunk
+
+	file    *os.File
+	ctx     context.Context
+	cancel  context.CancelFunc
+	pauseCh chan interface{}
+}
+
+func (f *Fetcher) Name() string {
+	return "http"
+}
+
+func (f *Fetcher) Setup(ctl *controller.Controller) (err error) {
+	f.ctl = ctl
+	f.doneCh = make(chan error, 1)
+	f.pauseCh = make(chan interface{}, 1)
+	if f.meta == nil {
+		f.meta = &fetcher.FetcherMeta{}
+	}
+	return
+}
+
+func (f *Fetcher) Resolve(req *base.Request) error {
+	if err := base.ParseReqExtra[fhttp.ReqExtra](req); err != nil {
+		return err
+	}
+	httpReq, err := buildRequest(nil, req)
+	if err != nil {
+		return err
+	}
+	client := buildClient()
+	// 只访问一个字节，测试资源是否支持Range请求
+	httpReq.Header.Set(base.HttpHeaderRange, fmt.Sprintf(base.HttpHeaderRangeFormat, 0, 0))
+	httpResp, err := client.Do(httpReq)
+	if err != nil {
+		return err
+	}
+	// 拿到响应头就关闭，不用加defer
+	httpResp.Body.Close()
+	res := &base.Resource{
+		Range: false,
+		Files: []*base.FileInfo{},
+	}
+	if base.HttpCodePartialContent == httpResp.StatusCode {
+		// 返回206响应码表示支持断点下载
+		res.Range = true
+		// 解析资源大小: bytes 0-1000/1001 => 1001
+		contentTotal := path.Base(httpResp.Header.Get(base.HttpHeaderContentRange))
+		if contentTotal != "" {
+			parse, err := strconv.ParseInt(contentTotal, 10, 64)
+			if err != nil {
+				return err
+			}
+			res.Size = parse
+		}
+	} else if base.HttpCodeOK == httpResp.StatusCode {
+		// 返回200响应码，不支持断点下载，通过Content-Length头获取文件大小，获取不到的话可能是chunked编码
+		contentLength := httpResp.Header.Get(base.HttpHeaderContentLength)
+		if contentLength != "" {
+			parse, err := strconv.ParseInt(contentLength, 10, 64)
+			if err != nil {
+				return err
+			}
+			res.Size = parse
+		}
+	} else {
+		return NewRequestError(httpResp.StatusCode, httpResp.Status)
+	}
+	file := &base.FileInfo{
+		Size: res.Size,
+	}
+	contentDisposition := httpResp.Header.Get(base.HttpHeaderContentDisposition)
+	if contentDisposition != "" {
+		_, params, _ := mime.ParseMediaType(contentDisposition)
+		filename := params["filePath"]
+		if filename != "" {
+			file.Name = filename
+		}
+	}
+	// Get file filePath by URL
+	if file.Name == "" {
+		file.Name = path.Base(httpReq.URL.Path)
+	}
+	// unknown file filePath
+	if file.Name == "" || file.Name == "/" || file.Name == "." {
+		file.Name = "unknown"
+	}
+	res.Files = append(res.Files, file)
+	res.Name = file.Name
+	f.meta.Req = req
+	f.meta.Res = res
+	return nil
+}
+
+func (f *Fetcher) Create(opts *base.Options) error {
+	f.meta.Opts = opts
+	f.status = base.DownloadStatusReady
+
+	if err := base.ParseReqExtra[fhttp.ReqExtra](f.meta.Req); err != nil {
+		return err
+	}
+	if err := base.ParseOptsExtra[fhttp.OptsExtra](f.meta.Opts); err != nil {
+		return err
+	}
+	if opts.Extra == nil {
+		opts.Extra = &fhttp.OptsExtra{}
+	}
+	extra := opts.Extra.(*fhttp.OptsExtra)
+	if extra.Connections == 0 {
+		var cfg config
+		exist, err := f.ctl.GetConfig(&cfg)
+		if err != nil {
+			return err
+		}
+		if exist {
+			extra.Connections = cfg.Connections
+		} else {
+			extra.Connections = 1
+		}
+	}
+	return nil
+}
+
+func (f *Fetcher) Start() (err error) {
+	// 创建文件
+	name := f.filepath()
+	f.file, err = f.ctl.Touch(name, f.meta.Res.Size)
+	if err != nil {
+		return err
+	}
+	f.status = base.DownloadStatusRunning
+	f.chunks = f.splitChunk()
+	f.fetch()
+	return
+}
+
+func (f *Fetcher) Pause() (err error) {
+	if base.DownloadStatusRunning != f.status {
+		return
+	}
+	f.status = base.DownloadStatusPause
+
+	if f.cancel != nil {
+		f.cancel()
+		<-f.pauseCh
+	}
+	return
+}
+
+func (f *Fetcher) Continue() (err error) {
+	if base.DownloadStatusRunning == f.status || base.DownloadStatusDone == f.status {
+		return
+	}
+	f.status = base.DownloadStatusRunning
+	f.file, err = os.OpenFile(f.filepath(), os.O_RDWR, os.ModeAppend)
+	if err != nil {
+		return err
+	}
+	f.fetch()
+	return
+}
+
+func (f *Fetcher) Close() (err error) {
+	if err = f.Pause(); err != nil {
+		return
+	}
+	return
+}
+
+func (f *Fetcher) Meta() *fetcher.FetcherMeta {
+	return f.meta
+}
+
+func (f *Fetcher) Progress() fetcher.Progress {
+	p := make(fetcher.Progress, 0)
+	if len(f.chunks) > 0 {
+		total := int64(0)
+		for _, chunk := range f.chunks {
+			total += chunk.Downloaded
+		}
+		p = append(p, total)
+	}
+	return p
+}
+
+func (f *Fetcher) Wait() (err error) {
+	return <-f.doneCh
+}
+
+func (f *Fetcher) filepath() string {
+	return f.meta.Filepath(f.meta.Res.Files[0])
+}
+
+func (f *Fetcher) fetch() {
+	f.ctx, f.cancel = context.WithCancel(context.Background())
+	eg, _ := errgroup.WithContext(f.ctx)
+	for i := 0; i < len(f.chunks); i++ {
+		i := i
+		eg.Go(func() error {
+			return f.fetchChunk(i)
+		})
+	}
+
+	go func() {
+		err := eg.Wait()
+		// 下载停止，关闭文件句柄
+		f.file.Close()
+		if f.status == base.DownloadStatusPause {
+			f.pauseCh <- nil
+		} else {
+			if err != nil {
+				f.status = base.DownloadStatusError
+			} else {
+				f.status = base.DownloadStatusDone
+			}
+			f.doneCh <- err
+		}
+	}()
+}
+
+func (f *Fetcher) fetchChunk(index int) (err error) {
+	chunk := f.chunks[index]
+
+	httpReq, err := buildRequest(f.ctx, f.meta.Req)
+	if err != nil {
+		return err
+	}
+	var (
+		client = buildClient()
+		buf    = make([]byte, 8192)
+	)
+	// 重试5次
+	for i := 0; i < 5; i++ {
+		// 如果下载完成直接返回
+		if chunk.Status == base.DownloadStatusDone {
+			return
+		}
+		// 如果已暂停直接跳出
+		if f.status == base.DownloadStatusPause {
+			break
+		}
+		var (
+			resp  *http.Response
+			retry bool
+		)
+		if f.meta.Res.Range {
+			httpReq.Header.Set(base.HttpHeaderRange,
+				fmt.Sprintf(base.HttpHeaderRangeFormat, chunk.Begin+chunk.Downloaded, chunk.End))
+		} else {
+			chunk.Downloaded = 0
+		}
+		err = func() error {
+			resp, err = client.Do(httpReq)
+			if err != nil {
+				return err
+			}
+			if resp.StatusCode != base.HttpCodeOK && resp.StatusCode != base.HttpCodePartialContent {
+				err = NewRequestError(resp.StatusCode, resp.Status)
+				return err
+			}
+			return nil
+		}()
+		if err != nil {
+			// 请求失败重试
+			continue
+		}
+		// 请求成功就重置错误次数，连续失败5次才终止
+		i = 0
+		retry, err = func() (bool, error) {
+			defer resp.Body.Close()
+			for {
+				n, err := resp.Body.Read(buf)
+				if n > 0 {
+					_, err := f.file.WriteAt(buf[:n], chunk.Begin+chunk.Downloaded)
+					if err != nil {
+						return false, err
+					}
+					chunk.Downloaded += int64(n)
+				}
+				if err != nil {
+					if err != io.EOF {
+						return true, err
+					}
+					break
+				}
+			}
+			return false, nil
+		}()
+		if !retry {
+			// 下载成功，跳出重试
+			break
+		}
+	}
+
+	if err != nil {
+		chunk.Status = base.DownloadStatusError
+		return
+	}
+
+	isComplete := f.meta.Res.Range && chunk.Downloaded >= chunk.End-chunk.Begin+1
+	if f.status == base.DownloadStatusPause && !isComplete {
+		chunk.Status = base.DownloadStatusPause
+		return
+	}
+
+	chunk.Status = base.DownloadStatusDone
+	return
+}
+
+func (f *Fetcher) splitChunk() (chunks []*chunk) {
+	if f.meta.Res.Range {
+		connections := f.meta.Opts.Extra.(*fhttp.OptsExtra).Connections
+		// 每个连接平均需要下载的分块大小
+		chunkSize := f.meta.Res.Size / int64(connections)
+		chunks = make([]*chunk, connections)
+		for i := 0; i < connections; i++ {
+			var (
+				begin = chunkSize * int64(i)
+				end   int64
+			)
+			if i == connections-1 {
+				// 最后一个分块需要保证把文件下载完
+				end = f.meta.Res.Size - 1
+			} else {
+				end = begin + chunkSize - 1
+			}
+			chunk := newChunk(begin, end)
+			chunks[i] = chunk
+		}
+	} else {
+		// 只支持单连接下载
+		chunks = make([]*chunk, 1)
+		chunks[0] = newChunk(0, 0)
+	}
+	return
+}
+
+func buildClient() *http.Client {
+	// Cookie handle
+	jar, _ := cookiejar.New(nil)
+	return &http.Client{
+		Jar:     jar,
+		Timeout: time.Second * 60,
+	}
+}
+
+func buildRequest(ctx context.Context, req *base.Request) (httpReq *http.Request, err error) {
+	url, err := url.Parse(req.URL)
+	if err != nil {
+		return
+	}
+
+	var (
+		method string
+		body   io.Reader
+	)
+	headers := make(map[string][]string)
+	if req.Extra == nil {
+		method = http.MethodGet
+	} else {
+		extra := req.Extra.(*fhttp.ReqExtra)
+		if extra.Method != "" {
+			method = extra.Method
+		} else {
+			method = http.MethodGet
+		}
+		if len(extra.Header) > 0 {
+			for k, v := range extra.Header {
+				headers[k] = []string{v}
+			}
+		}
+		if extra.Body != "" {
+			body = bytes.NewBufferString(extra.Body)
+		}
+	}
+
+	if ctx != nil {
+		httpReq, err = http.NewRequestWithContext(ctx, method, url.String(), body)
+	} else {
+		httpReq, err = http.NewRequest(method, url.String(), body)
+	}
+	if err != nil {
+		return
+	}
+	httpReq.Header = headers
+	return httpReq, nil
+}
+
+type fetcherData struct {
+	Chunks []*chunk
+}
+
+type FetcherBuilder struct {
+}
+
+var schemes = []string{"HTTP", "HTTPS"}
+
+func (fb *FetcherBuilder) Schemes() []string {
+	return schemes
+}
+
+func (fb *FetcherBuilder) Build() fetcher.Fetcher {
+	return &Fetcher{}
+}
+
+func (fb *FetcherBuilder) Store(f fetcher.Fetcher) (data any, err error) {
+	_f := f.(*Fetcher)
+	return &fetcherData{
+		Chunks: _f.chunks,
+	}, nil
+}
+
+func (fb *FetcherBuilder) Restore() (v any, f func(meta *fetcher.FetcherMeta, v any) fetcher.Fetcher) {
+	return &fetcherData{}, func(meta *fetcher.FetcherMeta, v any) fetcher.Fetcher {
+		fd := v.(*fetcherData)
+		fb := &FetcherBuilder{}
+		fetcher := fb.Build().(*Fetcher)
+		fetcher.meta = meta
+		fetcher.status = base.DownloadStatusPause
+		base.ParseReqExtra[fhttp.ReqExtra](fetcher.meta.Req)
+		base.ParseOptsExtra[fhttp.OptsExtra](fetcher.meta.Opts)
+		if len(fd.Chunks) == 0 {
+			fetcher.chunks = fetcher.splitChunk()
+		} else {
+			fetcher.chunks = fd.Chunks
+		}
+		return fetcher
+	}
+}

internal/protocol/http/fetcher_test.go

@@ -0,0 +1,295 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/internal/test"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/protocol/http"
+	"net"
+	"reflect"
+	"testing"
+	"time"
+)
+
+func TestFetcher_Resolve(t *testing.T) {
+	testResolve(test.StartTestFileServer, &base.Resource{
+		Name:  test.BuildName,
+		Size:  test.BuildSize,
+		Range: true,
+		Files: []*base.FileInfo{
+			{
+				Name: test.BuildName,
+				Size: test.BuildSize,
+			},
+		},
+	}, t)
+	testResolve(test.StartTestChunkedServer, &base.Resource{
+		Name:  test.BuildName,
+		Size:  0,
+		Range: false,
+		Files: []*base.FileInfo{
+			{
+				Name: test.BuildName,
+				Size: 0,
+			},
+		},
+	}, t)
+}
+
+func testResolve(startTestServer func() net.Listener, want *base.Resource, t *testing.T) {
+	listener := startTestServer()
+	defer listener.Close()
+	fetcher := buildFetcher()
+	err := fetcher.Resolve(&base.Request{
+		URL: "http://" + listener.Addr().String() + "/" + test.BuildName,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !reflect.DeepEqual(want, fetcher.meta.Res) {
+		t.Errorf("Resolve() got = %v, want %v", fetcher.meta.Res, want)
+	}
+}
+
+func TestFetcher_DownloadNormal(t *testing.T) {
+	listener := test.StartTestFileServer()
+	defer listener.Close()
+	// 正常下载
+	downloadNormal(listener, 1, t)
+	downloadNormal(listener, 5, t)
+	downloadNormal(listener, 8, t)
+	downloadNormal(listener, 16, t)
+}
+
+func TestFetcher_DownloadContinue(t *testing.T) {
+	listener := test.StartTestFileServer()
+	defer listener.Close()
+	// 暂停继续
+	downloadContinue(listener, 1, t)
+	downloadContinue(listener, 5, t)
+	downloadContinue(listener, 8, t)
+	downloadContinue(listener, 16, t)
+}
+
+func TestFetcher_DownloadChunked(t *testing.T) {
+	listener := test.StartTestChunkedServer()
+	defer listener.Close()
+	// chunked编码下载
+	downloadNormal(listener, 1, t)
+	downloadNormal(listener, 2, t)
+}
+
+func TestFetcher_DownloadPost(t *testing.T) {
+	listener := test.StartTestPostServer()
+	defer listener.Close()
+	// post下载
+	downloadPost(listener, 1, t)
+}
+
+func TestFetcher_DownloadRetry(t *testing.T) {
+	listener := test.StartTestRetryServer()
+	defer listener.Close()
+	// chunked编码下载
+	downloadNormal(listener, 1, t)
+}
+
+func TestFetcher_DownloadError(t *testing.T) {
+	listener := test.StartTestErrorServer()
+	defer listener.Close()
+	// chunked编码下载
+	downloadError(listener, 1, t)
+}
+
+func TestFetcher_DownloadResume(t *testing.T) {
+	listener := test.StartTestFileServer()
+	defer listener.Close()
+
+	downloadResume(listener, 1, t)
+	downloadResume(listener, 5, t)
+	downloadResume(listener, 8, t)
+	downloadResume(listener, 16, t)
+}
+
+func TestFetcher_Config(t *testing.T) {
+	fetcher := doDownloadReady(buildConfigFetcher(), test.StartTestFileServer(), 0, t)
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = fetcher.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func downloadReady(listener net.Listener, connections int, t *testing.T) fetcher.Fetcher {
+	return doDownloadReady(buildFetcher(), listener, connections, t)
+}
+
+func doDownloadReady(f fetcher.Fetcher, listener net.Listener, connections int, t *testing.T) fetcher.Fetcher {
+	err := f.Resolve(&base.Request{
+		URL: "http://" + listener.Addr().String() + "/" + test.BuildName,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	var extra any = nil
+	if connections > 0 {
+		extra = http.OptsExtra{
+			Connections: connections,
+		}
+	}
+	opts := &base.Options{
+		Name:  test.DownloadName,
+		Path:  test.Dir,
+		Extra: extra,
+	}
+	err = f.Create(opts)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return f
+}
+
+func downloadNormal(listener net.Listener, connections int, t *testing.T) {
+	fetcher := downloadReady(listener, connections, t)
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = fetcher.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func downloadPost(listener net.Listener, connections int, t *testing.T) {
+	fetcher := downloadReady(listener, connections, t)
+	fetcher.Meta().Req.Extra = &http.ReqExtra{
+		Method: "POST",
+		Header: map[string]string{
+			"Authorization": "Bearer 123456",
+		},
+		Body: fmt.Sprintf(`{"name":"%s"}`, test.BuildName),
+	}
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = fetcher.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func downloadContinue(listener net.Listener, connections int, t *testing.T) {
+	fetcher := downloadReady(listener, connections, t)
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Millisecond * 50)
+	if err := fetcher.Pause(); err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Millisecond * 50)
+	if err := fetcher.Continue(); err != nil {
+		t.Fatal(err)
+	}
+	err = fetcher.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func downloadError(listener net.Listener, connections int, t *testing.T) {
+	fetcher := downloadReady(listener, connections, t)
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = fetcher.Wait()
+	if err == nil {
+		t.Errorf("Download() got = %v, want %v", err, nil)
+	}
+}
+
+func downloadResume(listener net.Listener, connections int, t *testing.T) {
+	fetcher := downloadReady(listener, connections, t)
+	err := fetcher.Start()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	fb := new(FetcherBuilder)
+	time.Sleep(time.Millisecond * 50)
+	data, err := fb.Store(fetcher)
+	if err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Millisecond * 50)
+	fetcher.Pause()
+
+	_, f := fb.Restore()
+	f(fetcher.Meta(), data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fetcher.Setup(controller.NewController())
+	fetcher.Continue()
+
+	err = fetcher.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func buildFetcher() *Fetcher {
+	fetcher := new(FetcherBuilder).Build()
+	fetcher.Setup(controller.NewController())
+	return fetcher.(*Fetcher)
+}
+
+func buildConfigFetcher() fetcher.Fetcher {
+	fetcher := new(FetcherBuilder).Build()
+	newController := controller.NewController()
+	mockCfg := config{
+		Connections: 16,
+	}
+	newController.GetConfig = func(v any) (bool, error) {
+		if err := json.Unmarshal([]byte(test.ToJson(mockCfg)), v); err != nil {
+			return false, err
+		}
+		return true, nil
+	}
+	fetcher.Setup(newController)
+	return fetcher
+}

internal/test/httptest.go

@@ -0,0 +1,181 @@
+package test
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"math/rand"
+	"net"
+	"net/http"
+	"os"
+	"time"
+)
+
+const (
+	BuildName = "build.data"
+	BuildSize = 200 * 1024 * 1024
+	Dir       = "./"
+	BuildFile = Dir + BuildName
+
+	DownloadName = "download.data"
+	DownloadFile = Dir + DownloadName
+)
+
+func StartTestFileServer() net.Listener {
+	return startTestServer(func() http.Handler {
+		return http.FileServer(http.Dir(Dir))
+	})
+}
+
+type SlowFileServer struct {
+	delay   time.Duration
+	handler http.Handler
+}
+
+func (s *SlowFileServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	time.Sleep(s.delay)
+	s.handler.ServeHTTP(w, r)
+}
+
+func StartTestSlowFileServer(delay time.Duration) net.Listener {
+	return startTestServer(func() http.Handler {
+		return &SlowFileServer{
+			delay:   delay,
+			handler: http.FileServer(http.Dir(Dir)),
+		}
+	})
+}
+
+func StartTestChunkedServer() net.Listener {
+	return startTestServer(func() http.Handler {
+		mux := http.NewServeMux()
+		mux.HandleFunc("/"+BuildName, func(writer http.ResponseWriter, request *http.Request) {
+			file, err := os.Open(BuildFile)
+			if err != nil {
+				panic(err)
+			}
+			defer file.Close()
+			io.Copy(writer, file)
+		})
+		return mux
+	})
+}
+
+func StartTestRetryServer() net.Listener {
+	counter := 0
+	return startTestServer(func() http.Handler {
+		mux := http.NewServeMux()
+		mux.HandleFunc("/"+BuildName, func(writer http.ResponseWriter, request *http.Request) {
+			counter++
+			if counter != 1 && counter < 5 {
+				writer.WriteHeader(500)
+				return
+			}
+			file, err := os.Open(BuildFile)
+			if err != nil {
+				panic(err)
+			}
+			defer file.Close()
+			io.Copy(writer, file)
+		})
+		return mux
+	})
+}
+
+func StartTestPostServer() net.Listener {
+	return startTestServer(func() http.Handler {
+		mux := http.NewServeMux()
+		mux.HandleFunc("/"+BuildName, func(writer http.ResponseWriter, request *http.Request) {
+			if request.Method == "POST" && request.Header.Get("Authorization") != "" {
+				var data map[string]interface{}
+				if err := json.NewDecoder(request.Body).Decode(&data); err != nil {
+					panic(err)
+				}
+				if data["name"] == BuildName {
+					file, err := os.Open(BuildFile)
+					if err != nil {
+						panic(err)
+					}
+					defer file.Close()
+					io.Copy(writer, file)
+				}
+			}
+		})
+		return mux
+	})
+}
+
+func StartTestErrorServer() net.Listener {
+	counter := 0
+	return startTestServer(func() http.Handler {
+		mux := http.NewServeMux()
+		mux.HandleFunc("/"+BuildName, func(writer http.ResponseWriter, request *http.Request) {
+			counter++
+			if counter != 1 {
+				writer.WriteHeader(500)
+				return
+			}
+		})
+		return mux
+	})
+}
+
+func startTestServer(serverHandle func() http.Handler) net.Listener {
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		panic(err)
+	}
+	file, err := os.Create(BuildFile)
+	if err != nil {
+		panic(err)
+	}
+	// 随机生成一个文件
+	l := int64(8192)
+	buf := make([]byte, l)
+	size := int64(0)
+	for {
+		_, err := rand.Read(buf)
+		if err != nil {
+			panic(err)
+		}
+		if size+l >= BuildSize {
+			file.WriteAt(buf[0:BuildSize-size], size)
+			break
+		}
+		file.WriteAt(buf, size)
+		size += l
+	}
+	server := &http.Server{}
+	server.Handler = serverHandle()
+	go server.Serve(listener)
+
+	return &delFileListener{
+		File:     file,
+		Listener: listener,
+	}
+}
+
+type delFileListener struct {
+	*os.File
+	net.Listener
+}
+
+func (c *delFileListener) Close() error {
+	defer func() {
+		c.File.Close()
+		if err := ifExistAndRemove(c.File.Name()); err != nil {
+			fmt.Println(err)
+		}
+		if err := ifExistAndRemove(DownloadFile); err != nil {
+			fmt.Println(err)
+		}
+	}()
+	return c.Listener.Close()
+}
+
+func ifExistAndRemove(name string) error {
+	if _, err := os.Stat(name); !os.IsNotExist(err) {
+		return os.Remove(name)
+	}
+	return nil
+}

internal/test/util.go

@@ -0,0 +1,55 @@
+package test
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+func FileMd5(filePath string) string {
+	file, err := os.Open(filePath)
+	if err != nil {
+		panic(err)
+	}
+	// Tell the program to call the following function when the current function returns
+	defer file.Close()
+
+	// Open a new hash interface to write to
+	hash := md5.New()
+
+	// Copy the file in the hash interface and check for any error
+	if _, err := io.Copy(hash, file); err != nil {
+		return ""
+	}
+	return hex.EncodeToString(hash.Sum(nil))
+}
+
+func DirMd5(dirPath string) string {
+	hash := md5.New()
+	filepath.Walk(dirPath, func(path string, info os.FileInfo, err error) error {
+		if info.IsDir() {
+			return nil
+		}
+		file, err := os.Open(path)
+		if err != nil {
+			return err
+		}
+		if _, err := io.Copy(hash, file); err != nil {
+			return err
+		}
+		return nil
+	})
+	return hex.EncodeToString(hash.Sum(nil))
+}
+
+func ToJson(v interface{}) string {
+	buf, _ := json.Marshal(v)
+	return string(buf)
+}
+
+func JsonEqual(v1 any, v2 any) bool {
+	return ToJson(v1) == ToJson(v2)
+}

main.go

@@ -1,23 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/monkeyWie/gopeed-core/protocol/http"
-)
-
-func main() {
-	request := &http.Request{
-		Method: "get",
-		URL:    "http://github.com/proxyee-down-org/proxyee-down/releases/download/3.4/proxyee-down-main.jar",
-		Header: map[string]string{
-			"Host":            "github.com",
-			"User-Agent":      "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36",
-			"Accept":          "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
-			"Referer":         "http://github.com/proxyee-down-org/proxyee-down/releases",
-			"Accept-Encoding": "gzip, deflate, br",
-			"Accept-Language": "zh-CN,zh;q=0.9,en;q=0.8",
-		},
-	}
-	got, _ := http.Resolve(request)
-	fmt.Println(got)
-}

pkg/base/constants.go

@@ -0,0 +1,24 @@
+package base
+
+type Status string
+
+const (
+	DownloadStatusReady   Status = "ready" // task create but not start
+	DownloadStatusRunning Status = "running"
+	DownloadStatusPause   Status = "pause"
+	DownloadStatusWait    Status = "wait" // task is wait for running
+	DownloadStatusError   Status = "error"
+	DownloadStatusDone    Status = "done"
+)
+
+const (
+	HttpCodeOK             = 200
+	HttpCodePartialContent = 206
+
+	HttpHeaderRange              = "Range"
+	HttpHeaderContentLength      = "Content-Length"
+	HttpHeaderContentRange       = "Content-Range"
+	HttpHeaderContentDisposition = "Content-Disposition"
+
+	HttpHeaderRangeFormat = "bytes=%d-%d"
+)

pkg/base/error.go

@@ -0,0 +1,8 @@
+package base
+
+import "errors"
+
+var (
+	NotFound  = errors.New("not found")
+	BadParams = errors.New("bad params")
+)

pkg/base/model.go

@@ -0,0 +1,71 @@
+package base
+
+import (
+	"github.com/GopeedLab/gopeed/pkg/util"
+)
+
+// Request download request
+type Request struct {
+	URL   string `json:"url"`
+	Extra any    `json:"extra"`
+}
+
+// Resource download resource
+type Resource struct {
+	Name string `json:"name"`
+	Size int64  `json:"size"`
+	// is support range download
+	Range   bool   `json:"range"`
+	RootDir string `json:"rootDir"`
+	// file list
+	Files []*FileInfo `json:"files"`
+	Hash  string      `json:"hash"`
+}
+
+type FileInfo struct {
+	Name string `json:"name"`
+	Path string `json:"path"`
+	Size int64  `json:"size"`
+}
+
+// Options for download
+type Options struct {
+	// Download file name
+	Name string `json:"name"`
+	// Download file path
+	Path string `json:"path"`
+	// Select file indexes to download
+	SelectFiles []int `json:"selectFiles"`
+	// Extra info for specific fetcher
+	Extra any `json:"extra"`
+}
+
+func ParseReqExtra[E any](req *Request) error {
+	if req.Extra == nil {
+		return nil
+	}
+	if _, ok := req.Extra.(*E); ok {
+		return nil
+	}
+	var t E
+	if err := util.MapToStruct(req.Extra, &t); err != nil {
+		return err
+	}
+	req.Extra = &t
+	return nil
+}
+
+func ParseOptsExtra[E any](opts *Options) error {
+	if opts.Extra == nil {
+		return nil
+	}
+	if _, ok := opts.Extra.(*E); ok {
+		return nil
+	}
+	var t E
+	if err := util.MapToStruct(opts.Extra, &t); err != nil {
+		return err
+	}
+	opts.Extra = &t
+	return nil
+}

pkg/download/downloader.go

@@ -0,0 +1,652 @@
+package download
+
+import (
+	"errors"
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/util"
+	gonanoid "github.com/matoous/go-nanoid/v2"
+	"os"
+	"path"
+	"sort"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+const (
+	// task info bucket
+	bucketTask = "task"
+	// task download data bucket
+	bucketSave = "save"
+	// downloader config bucket
+	bucketConfig = "config"
+)
+
+type Listener func(event *Event)
+
+type Progress struct {
+	// 下载耗时(纳秒)
+	Used int64 `json:"used"`
+	// 每秒下载字节数
+	Speed int64 `json:"speed"`
+	// 已下载的字节数
+	Downloaded int64 `json:"downloaded"`
+}
+
+type Downloader struct {
+	cfg           *DownloaderConfig
+	fetchBuilders map[string]fetcher.FetcherBuilder
+	fetcherMap    map[string]fetcher.Fetcher
+	storage       Storage
+	tasks         []*Task
+	listener      Listener
+
+	lock   *sync.Mutex
+	closed atomic.Bool
+}
+
+func NewDownloader(cfg *DownloaderConfig) *Downloader {
+	if cfg == nil {
+		cfg = &DownloaderConfig{}
+	}
+	cfg.Init()
+
+	d := &Downloader{
+		cfg: cfg,
+
+		fetchBuilders: make(map[string]fetcher.FetcherBuilder),
+		fetcherMap:    make(map[string]fetcher.Fetcher),
+
+		storage: cfg.Storage,
+		lock:    &sync.Mutex{},
+	}
+	for _, f := range cfg.FetchBuilders {
+		for _, p := range f.Schemes() {
+			d.fetchBuilders[strings.ToUpper(p)] = f
+		}
+	}
+	return d
+}
+
+func (d *Downloader) Setup() error {
+	// setup storage
+	if err := d.storage.Setup([]string{bucketTask, bucketSave, bucketConfig}); err != nil {
+		return err
+	}
+	// load config from storage
+	var cfg DownloaderStoreConfig
+	exist, err := d.storage.Get(bucketConfig, "config", &cfg)
+	if err != nil {
+		return err
+	}
+	if exist {
+		d.cfg.DownloaderStoreConfig = &cfg
+	} else {
+		d.cfg.DownloaderStoreConfig = &DownloaderStoreConfig{
+			FirstLoad: true,
+		}
+	}
+	// init default config
+	d.cfg.DownloaderStoreConfig.Init()
+	// load tasks from storage
+	var tasks []*Task
+	if err := d.storage.List(bucketTask, &tasks); err != nil {
+		return err
+	}
+	if tasks == nil {
+		tasks = make([]*Task, 0)
+	} else {
+		for i := len(tasks) - 1; i >= 0; i-- {
+			task := tasks[i]
+			// Remove broken tasks
+			if task.Meta == nil {
+				tasks = append(tasks[:i], tasks[i+1:]...)
+				continue
+			}
+			initTask(task)
+			if task.Status != base.DownloadStatusDone && task.Status != base.DownloadStatusError {
+				task.Status = base.DownloadStatusPause
+			}
+		}
+		// sort by create time
+		sort.Slice(tasks, func(i, j int) bool {
+			return tasks[i].CreatedAt.Before(tasks[j].CreatedAt)
+		})
+	}
+	d.tasks = tasks
+
+	// 每个tick统计一次下载速度
+	go func() {
+
+		for !d.closed.Load() {
+			if len(d.tasks) > 0 {
+				for _, task := range d.tasks {
+					func() {
+						task.lock.Lock()
+						defer task.lock.Unlock()
+						if task.Status != base.DownloadStatusRunning {
+							return
+						}
+						// check if task is deleted
+						if d.GetTask(task.ID) == nil {
+							return
+						}
+
+						current := task.fetcher.Progress().TotalDownloaded()
+						task.Progress.Used = task.timer.Used()
+						task.Progress.Speed = task.calcSpeed(current-task.Progress.Downloaded, float64(d.cfg.RefreshInterval)/1000)
+						task.Progress.Downloaded = current
+						d.emit(EventKeyProgress, task)
+
+						// store fetcher progress
+						data, err := task.fetcherBuilder.Store(task.fetcher)
+						if err != nil {
+							return // TODO log
+						}
+						if err := d.storage.Put(bucketSave, task.ID, data); err != nil {
+							return // TODO log
+						}
+						if err := d.storage.Put(bucketTask, task.ID, task); err != nil {
+							return // TODO log
+						}
+					}()
+				}
+			}
+			time.Sleep(time.Millisecond * time.Duration(d.cfg.RefreshInterval))
+		}
+	}()
+	return nil
+}
+
+func (d *Downloader) parseFb(url string) (fetcher.FetcherBuilder, error) {
+	schema := util.ParseSchema(url)
+	fetchBuilder, ok := d.fetchBuilders[schema]
+	if !ok {
+		fetchBuilder, ok = d.fetchBuilders[util.FileSchema]
+	}
+	if ok {
+		return fetchBuilder, nil
+	}
+	return nil, errors.New("unsupported protocol")
+}
+
+func (d *Downloader) setupFetcher(fetcher fetcher.Fetcher) {
+	ctl := controller.NewController()
+	ctl.GetConfig = func(v any) (bool, error) {
+		return d.getProtocolConfig(fetcher.Name(), v)
+	}
+	fetcher.Setup(ctl)
+}
+
+func (d *Downloader) Resolve(req *base.Request) (rr *ResolveResult, err error) {
+	fb, err := d.parseFb(req.URL)
+	if err != nil {
+		return
+	}
+	fetcher := fb.Build()
+	d.setupFetcher(fetcher)
+	err = fetcher.Resolve(req)
+	if err != nil {
+		return
+	}
+	rrId, err := gonanoid.New()
+	if err != nil {
+		return
+	}
+	d.fetcherMap[rrId] = fetcher
+	rr = &ResolveResult{
+		ID:  rrId,
+		Res: fetcher.Meta().Res,
+	}
+	return
+}
+
+func (d *Downloader) CreateDirect(req *base.Request, opts *base.Options) (taskId string, err error) {
+	rr, err := d.Resolve(req)
+	if err != nil {
+		return
+	}
+	return d.Create(rr.ID, opts)
+}
+
+func (d *Downloader) Create(rrId string, opts *base.Options) (taskId string, err error) {
+	if opts == nil {
+		opts = &base.Options{}
+	}
+	fetcher, ok := d.fetcherMap[rrId]
+	if !ok {
+		return "", errors.New("invalid resource id")
+	}
+	defer delete(d.fetcherMap, rrId)
+
+	meta := fetcher.Meta()
+	meta.Opts = opts
+	res := meta.Res
+	if len(opts.SelectFiles) == 0 {
+		opts.SelectFiles = make([]int, 0)
+		for i := range res.Files {
+			opts.SelectFiles = append(opts.SelectFiles, i)
+		}
+	}
+	if opts.Path == "" {
+		storeConfig, err := d.GetConfig()
+		if err != nil {
+			return "", err
+		}
+		opts.Path = storeConfig.DownloadDir
+	}
+
+	fb, err := d.parseFb(fetcher.Meta().Req.URL)
+	if err != nil {
+		return
+	}
+
+	// check if the download file is duplicated and rename it automatically.
+	files := res.Files
+	if res.RootDir != "" {
+		fullDirPath := path.Join(opts.Path, res.RootDir)
+		newName, err := util.CheckDuplicateAndRename(fullDirPath)
+		if err != nil {
+			return "", err
+		}
+		res.RootDir = newName
+	} else if len(files) == 1 {
+		fullPath := meta.Filepath(files[0])
+		newName, err := util.CheckDuplicateAndRename(fullPath)
+		if err != nil {
+			return "", err
+		}
+		opts.Name = newName
+	}
+
+	err = fetcher.Create(opts)
+	if err != nil {
+		return
+	}
+
+	task := NewTask()
+	task.fetcherBuilder = fb
+	task.fetcher = fetcher
+	task.Meta = fetcher.Meta()
+	task.Progress = &Progress{}
+	task.Status = base.DownloadStatusReady
+	// calculate select files size
+	for _, selectIndex := range opts.SelectFiles {
+		task.Size += res.Files[selectIndex].Size
+	}
+	initTask(task)
+	err = func() error {
+		d.lock.Lock()
+		defer d.lock.Unlock()
+		d.tasks = append(d.tasks, task)
+		return d.storage.Put(bucketTask, task.ID, task.clone())
+	}()
+	if err != nil {
+		return
+	}
+	taskId = task.ID
+	d.tryRunning(func(remain int) {
+		if remain > 0 {
+			err = d.start(task)
+		}
+	})
+	return
+}
+
+func (d *Downloader) Pause(id string) (err error) {
+	task := d.GetTask(id)
+	if task == nil {
+		return
+	}
+	if err = d.doPause(task, base.DownloadStatusPause); err != nil {
+		return err
+	}
+	return d.notifyRunning()
+}
+
+func (d *Downloader) Continue(id string) (err error) {
+	task := d.GetTask(id)
+	if task == nil {
+		return
+	}
+	d.tryRunning(func(remain int) {
+		if remain == 0 {
+			// no more task can be running, need to doPause a running task
+			for _, t := range d.tasks {
+				if t.Status == base.DownloadStatusRunning {
+					err = d.doPause(t, base.DownloadStatusWait)
+					break
+				}
+			}
+		}
+		if err != nil {
+			return
+		}
+	})
+	if err != nil {
+		return
+	}
+	return d.doContinue(task)
+}
+
+func (d *Downloader) Delete(id string, force bool) (err error) {
+	d.lock.Lock()
+	defer d.lock.Unlock()
+	task := d.GetTask(id)
+	if task == nil {
+		return
+	}
+	task.lock.Lock()
+	defer task.lock.Unlock()
+	if task.fetcher != nil {
+		err = task.fetcher.Close()
+		if err != nil {
+			return
+		}
+	}
+	for i, t := range d.tasks {
+		if t.ID == id {
+			d.tasks = append(d.tasks[:i], d.tasks[i+1:]...)
+			break
+		}
+	}
+	err = d.storage.Delete(bucketTask, id)
+	if err != nil {
+		return
+	}
+	err = d.storage.Delete(bucketSave, id)
+	if err != nil {
+		return
+	}
+	if force {
+		if task.Meta.Res.RootDir != "" {
+			if err = os.RemoveAll(path.Join(task.Meta.Opts.Path, task.Meta.Res.RootDir)); err != nil {
+				return
+			}
+		} else {
+			for _, file := range task.Meta.Res.Files {
+				if err = util.SafeRemove(task.Meta.Filepath(file)); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	d.emit(EventKeyDelete, task)
+	if task.Status == base.DownloadStatusRunning {
+		if err = d.doNotifyRunning(); err != nil {
+			return err
+		}
+	}
+	task = nil
+	return
+}
+
+func (d *Downloader) Close() error {
+	d.lock.Lock()
+	defer d.lock.Unlock()
+	d.closed.Store(true)
+	for _, task := range d.tasks {
+		d.doPause(task, base.DownloadStatusPause)
+	}
+	return d.storage.Close()
+}
+
+func (d *Downloader) Clear() error {
+	if err := d.Close(); err != nil {
+		return err
+	}
+	if err := d.storage.Clear(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (d *Downloader) Listener(fn Listener) {
+	d.listener = fn
+}
+
+func (d *Downloader) emit(eventKey EventKey, task *Task, errs ...error) {
+	if d.listener != nil {
+		var err error
+		if len(errs) > 0 {
+			err = errs[0]
+		}
+		d.listener(&Event{
+			Key:  eventKey,
+			Task: task,
+			Err:  err,
+		})
+	}
+}
+
+func (d *Downloader) GetTask(id string) *Task {
+	for _, task := range d.tasks {
+		if task.ID == id {
+			return task
+		}
+	}
+	return nil
+}
+
+func (d *Downloader) GetTasks() []*Task {
+	return d.tasks
+}
+
+func (d *Downloader) GetConfig() (*DownloaderStoreConfig, error) {
+	return d.cfg.DownloaderStoreConfig, nil
+}
+
+func (d *Downloader) PutConfig(v *DownloaderStoreConfig) error {
+	d.cfg.DownloaderStoreConfig = v
+	return d.storage.Put(bucketConfig, "config", v)
+}
+
+func (d *Downloader) getProtocolConfig(name string, v any) (bool, error) {
+	cfg, err := d.GetConfig()
+	if err != nil {
+		return false, err
+	}
+	if cfg.ProtocolConfig == nil || cfg.ProtocolConfig[name] == nil {
+		return false, nil
+	}
+	if err := util.MapToStruct(cfg.ProtocolConfig[name], v); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// wait task done
+func (d *Downloader) watch(task *Task) {
+	err := task.fetcher.Wait()
+	if err != nil {
+		task.Status = base.DownloadStatusError
+		d.emit(EventKeyError, task, err)
+	} else {
+		task.Progress.Used = task.timer.Used()
+		if task.Size == 0 {
+			task.Size = task.fetcher.Progress().TotalDownloaded()
+			task.Meta.Res.Size = task.Size
+		}
+		used := task.Progress.Used / int64(time.Second)
+		if used == 0 {
+			used = 1
+		}
+		task.Progress.Speed = task.Size / used
+		task.Progress.Downloaded = task.Size
+		task.Status = base.DownloadStatusDone
+		d.storage.Put(bucketTask, task.ID, task.clone())
+		d.emit(EventKeyDone, task)
+	}
+	d.emit(EventKeyFinally, task, err)
+	d.notifyRunning()
+}
+
+func (d *Downloader) restoreFetcher(task *Task) error {
+	if task.fetcher == nil {
+		fb, err := d.parseFb(task.Meta.Req.URL)
+		if err != nil {
+			return err
+		}
+		task.fetcherBuilder = fb
+		err = func() error {
+			v, f := fb.Restore()
+			if v != nil {
+				err := d.storage.Pop(bucketSave, task.ID, v)
+				if err != nil {
+					return err
+				}
+			}
+			task.fetcher = f(task.Meta, v)
+			return nil
+		}()
+		if err != nil {
+			// TODO log
+		}
+		if task.fetcher == nil {
+			task.fetcher = fb.Build()
+		}
+		d.setupFetcher(task.fetcher)
+		task.fetcher.Create(task.Meta.Opts)
+	}
+	return nil
+}
+
+func (d *Downloader) tryRunning(cb func(remain int)) {
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	runningCount := 0
+	for _, task := range d.tasks {
+		if task.Status == base.DownloadStatusRunning {
+			runningCount++
+		}
+	}
+	cb(d.cfg.MaxRunning - runningCount)
+}
+
+func (d *Downloader) notifyRunning() error {
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	return d.doNotifyRunning()
+}
+
+func (d *Downloader) doNotifyRunning() error {
+	for _, task := range d.tasks {
+		if task.Status == base.DownloadStatusReady || task.Status == base.DownloadStatusWait {
+			return d.doContinue(task)
+		}
+	}
+	return nil
+}
+
+func (d *Downloader) start(task *Task) error {
+	var event EventKey
+	if task.Status == base.DownloadStatusReady {
+		event = EventKeyStart
+	} else {
+		event = EventKeyContinue
+	}
+
+	task.Status = base.DownloadStatusRunning
+	task.Progress.Speed = 0
+	task.timer.Start()
+	if err := d.storage.Put(bucketTask, task.ID, task.clone()); err != nil {
+		return err
+	}
+	var err error
+	if event == EventKeyStart {
+		err = task.fetcher.Start()
+	}
+	if event == EventKeyContinue {
+		err = task.fetcher.Continue()
+	}
+	if err != nil {
+		return err
+	}
+	go d.watch(task)
+	d.emit(event, task)
+	return nil
+}
+
+func (d *Downloader) doPause(task *Task, status base.Status) (err error) {
+	task.lock.Lock()
+	defer task.lock.Unlock()
+	if task.Status == base.DownloadStatusRunning {
+		task.Status = status
+		task.timer.Pause()
+		task.fetcher.Pause()
+		d.storage.Put(bucketTask, task.ID, task.clone())
+		d.emit(EventKeyPause, task)
+	}
+	return
+}
+
+func (d *Downloader) doContinue(task *Task) (err error) {
+	task.lock.Lock()
+	defer task.lock.Unlock()
+	if task.Status != base.DownloadStatusRunning && task.Status != base.DownloadStatusDone {
+		err = d.restoreFetcher(task)
+		if err != nil {
+			return
+		}
+		err = d.start(task)
+	}
+	return
+}
+
+func initTask(task *Task) {
+	task.timer = util.NewTimer(task.Progress.Used)
+	task.lock = &sync.Mutex{}
+	task.speedArr = make([]int64, 0)
+}
+
+var defaultDownloader = NewDownloader(nil)
+
+type boot struct {
+	url      string
+	extra    interface{}
+	listener Listener
+}
+
+func (b *boot) URL(url string) *boot {
+	b.url = url
+	return b
+}
+
+func (b *boot) Extra(extra interface{}) *boot {
+	b.extra = extra
+	return b
+}
+
+func (b *boot) Resolve() (*ResolveResult, error) {
+	return defaultDownloader.Resolve(&base.Request{
+		URL:   b.url,
+		Extra: b.extra,
+	})
+}
+
+func (b *boot) Listener(listener Listener) *boot {
+	b.listener = listener
+	return b
+}
+
+func (b *boot) Create(opts *base.Options) (string, error) {
+	rr, err := b.Resolve()
+	if err != nil {
+		return "", err
+	}
+	defaultDownloader.Listener(b.listener)
+	return defaultDownloader.Create(rr.ID, opts)
+}
+
+func Boot() *boot {
+	err := defaultDownloader.Setup()
+	if err != nil {
+		panic(err)
+	}
+	return &boot{}
+}

pkg/download/downloader_test.go

@@ -0,0 +1,205 @@
+package download
+
+import (
+	"github.com/GopeedLab/gopeed/internal/test"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/protocol/http"
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestDownloader_Resolve(t *testing.T) {
+	listener := test.StartTestFileServer()
+	defer listener.Close()
+
+	downloader := NewDownloader(nil)
+	if err := downloader.Setup(); err != nil {
+		t.Fatal(err)
+	}
+	defer downloader.Clear()
+	req := &base.Request{
+		URL: "http://" + listener.Addr().String() + "/" + test.BuildName,
+	}
+	rr, err := downloader.Resolve(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := &base.Resource{
+		Name:  test.BuildName,
+		Size:  test.BuildSize,
+		Range: true,
+		Files: []*base.FileInfo{
+			{
+				Name: test.BuildName,
+				Path: "",
+				Size: test.BuildSize,
+			},
+		},
+	}
+	if !reflect.DeepEqual(want, rr.Res) {
+		t.Errorf("Resolve() got = %v, want %v", rr.Res, want)
+	}
+}
+
+func TestDownloader_Create(t *testing.T) {
+	listener := test.StartTestFileServer()
+	defer listener.Close()
+
+	downloader := NewDownloader(nil)
+	if err := downloader.Setup(); err != nil {
+		t.Fatal(err)
+	}
+	defer downloader.Clear()
+	req := &base.Request{
+		URL: "http://" + listener.Addr().String() + "/" + test.BuildName,
+	}
+	rr, err := downloader.Resolve(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	downloader.Listener(func(event *Event) {
+		if event.Key == EventKeyDone {
+			wg.Done()
+		}
+	})
+	_, err = downloader.Create(rr.ID, &base.Options{
+		Path: test.Dir,
+		Name: test.DownloadName,
+		Extra: http.OptsExtra{
+			Connections: 4,
+		},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	wg.Wait()
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("Download() got = %v, want %v", got, want)
+	}
+}
+
+func TestDownloader_StoreAndRestore(t *testing.T) {
+	listener := test.StartTestSlowFileServer(time.Millisecond * 2000)
+	defer listener.Close()
+
+	downloader := NewDownloader(&DownloaderConfig{
+		Storage: NewBoltStorage("./"),
+	})
+	if err := downloader.Setup(); err != nil {
+		t.Fatal(err)
+	}
+	defer downloader.Clear()
+	req := &base.Request{
+		URL: "http://" + listener.Addr().String() + "/" + test.BuildName,
+	}
+	rr, err := downloader.Resolve(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	id, err := downloader.Create(rr.ID, &base.Options{
+		Path: test.Dir,
+		Name: test.DownloadName,
+		Extra: http.OptsExtra{
+			Connections: 4,
+		},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	time.Sleep(time.Millisecond * 1001)
+	err = downloader.Pause(id)
+	if err != nil {
+		t.Fatal(err)
+	}
+	downloader.Close()
+
+	downloader = NewDownloader(&DownloaderConfig{
+		Storage: NewBoltStorage("./"),
+	})
+	if err := downloader.Setup(); err != nil {
+		t.Fatal(err)
+	}
+	task := downloader.GetTask(id)
+
+	if task == nil {
+		t.Fatal("task is nil")
+	}
+	var wg sync.WaitGroup
+	wg.Add(1)
+	downloader.Listener(func(event *Event) {
+		if event.Key == EventKeyDone {
+			wg.Done()
+		}
+	})
+	err = downloader.Continue(id)
+	wg.Wait()
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := test.FileMd5(test.BuildFile)
+	got := test.FileMd5(test.DownloadFile)
+	if want != got {
+		t.Errorf("StoreAndResume() got = %v, want %v", got, want)
+	}
+
+	downloader.Clear()
+}
+
+func TestDownloader_Protocol_Config(t *testing.T) {
+	downloader := NewDownloader(nil)
+	if err := downloader.Setup(); err != nil {
+		t.Fatal(err)
+	}
+	defer downloader.Clear()
+
+	var httpCfg map[string]any
+	exits, err := downloader.getProtocolConfig("http", &httpCfg)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if exits {
+		t.Errorf("getProtocolConfig() got = %v, want %v", exits, false)
+	}
+
+	storeCfg := &DownloaderStoreConfig{
+		DownloadDir: "./downloads",
+		ProtocolConfig: map[string]any{
+			"http": map[string]any{
+				"connections": 4,
+			},
+			"bt": map[string]any{
+				"trackerSubscribeUrls": []string{
+					"https://raw.githubusercontent.com/XIU2/TrackersListCollection/master/best.txt",
+				},
+				"trackers": []string{
+					"udp://tracker.coppersurfer.tk:6969/announce",
+					"udp://tracker.leechers-paradise.org:6969/announce",
+				},
+			},
+		},
+		Extra: map[string]any{
+			"theme": "dark",
+		},
+	}
+
+	if err = downloader.PutConfig(storeCfg); err != nil {
+		t.Fatal(err)
+	}
+
+	newStoreCfg, err := downloader.GetConfig()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !test.JsonEqual(storeCfg, newStoreCfg) {
+		t.Errorf("GetConfig() got = %v, want %v", test.ToJson(storeCfg), test.ToJson(newStoreCfg))
+	}
+}

pkg/download/event.go

@@ -0,0 +1,20 @@
+package download
+
+type EventKey string
+
+const (
+	EventKeyStart    = "start"
+	EventKeyPause    = "pause"
+	EventKeyContinue = "continue"
+	EventKeyProgress = "progress"
+	EventKeyError    = "error"
+	EventKeyDelete   = "delete"
+	EventKeyDone     = "done"
+	EventKeyFinally  = "finally"
+)
+
+type Event struct {
+	Key  EventKey
+	Task *Task
+	Err  error
+}

pkg/download/model.go

@@ -0,0 +1,114 @@
+package download
+
+import (
+	"github.com/GopeedLab/gopeed/internal/controller"
+	"github.com/GopeedLab/gopeed/internal/fetcher"
+	"github.com/GopeedLab/gopeed/internal/protocol/bt"
+	"github.com/GopeedLab/gopeed/internal/protocol/http"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/util"
+	gonanoid "github.com/matoous/go-nanoid/v2"
+	"sync"
+	"time"
+)
+
+type ResolveResult struct {
+	ID  string         `json:"id"`
+	Res *base.Resource `json:"res"`
+}
+
+type Task struct {
+	ID        string               `json:"id"`
+	Meta      *fetcher.FetcherMeta `json:"meta"`
+	Status    base.Status          `json:"status"`
+	Progress  *Progress            `json:"progress"`
+	Size      int64                `json:"size"`
+	CreatedAt time.Time            `json:"createdAt"`
+
+	fetcherBuilder fetcher.FetcherBuilder
+	fetcher        fetcher.Fetcher
+	timer          *util.Timer
+	lock           *sync.Mutex
+	speedArr       []int64
+}
+
+func NewTask() *Task {
+	id, err := gonanoid.New()
+	if err != nil {
+		panic(err)
+	}
+	return &Task{
+		ID:        id,
+		Status:    base.DownloadStatusReady,
+		CreatedAt: time.Now(),
+	}
+}
+
+func (t *Task) clone() *Task {
+	return &Task{
+		ID:        t.ID,
+		Meta:      t.Meta,
+		Status:    t.Status,
+		Progress:  t.Progress,
+		Size:      t.Size,
+		CreatedAt: t.CreatedAt,
+	}
+}
+
+func (t *Task) calcSpeed(downloaded int64, usedTime float64) int64 {
+	t.speedArr = append(t.speedArr, downloaded)
+	if len(t.speedArr) > 6 {
+		t.speedArr = t.speedArr[1:]
+	}
+	var total int64
+	for _, v := range t.speedArr {
+		total += v
+	}
+	return int64(float64(total) / float64(len(t.speedArr)) / usedTime)
+}
+
+type DownloaderConfig struct {
+	Controller    *controller.Controller
+	FetchBuilders []fetcher.FetcherBuilder
+
+	RefreshInterval int `json:"refreshInterval"` // RefreshInterval time duration to refresh task progress(ms)
+	Storage         Storage
+
+	*DownloaderStoreConfig
+}
+
+func (cfg *DownloaderConfig) Init() *DownloaderConfig {
+	if cfg.Controller == nil {
+		cfg.Controller = controller.NewController()
+	}
+	if len(cfg.FetchBuilders) == 0 {
+		cfg.FetchBuilders = []fetcher.FetcherBuilder{
+			new(http.FetcherBuilder),
+			new(bt.FetcherBuilder),
+		}
+	}
+	if cfg.RefreshInterval == 0 {
+		cfg.RefreshInterval = 350
+	}
+	if cfg.Storage == nil {
+		cfg.Storage = NewMemStorage()
+	}
+	return cfg
+}
+
+// DownloaderStoreConfig is the config that can restore the downloader.
+type DownloaderStoreConfig struct {
+	FirstLoad bool `json:"-"` // fromNoStore is the flag that the config is first time init and not from store
+
+	DownloadDir    string         `json:"downloadDir"`    // DownloadDir is the default directory to save the downloaded files
+	MaxRunning     int            `json:"maxRunning"`     // MaxRunning is the max running download count
+	ProtocolConfig map[string]any `json:"protocolConfig"` // ProtocolConfig is special config for each protocol
+	Extra          map[string]any `json:"extra"`          // Extra is the extra config
+}
+
+func (cfg *DownloaderStoreConfig) Init() *DownloaderStoreConfig {
+	if cfg.MaxRunning == 0 {
+		cfg.MaxRunning = 3
+	}
+	return cfg
+}

pkg/download/storage.go

@@ -0,0 +1,228 @@
+package download
+
+import (
+	"encoding/json"
+	"go.etcd.io/bbolt"
+	"os"
+	"path/filepath"
+	"reflect"
+)
+
+type Storage interface {
+	Setup(buckets []string) error
+	Put(bucket string, key string, v any) error
+	Get(bucket string, key string, v any) (bool, error)
+	List(bucket string, v any) error
+	Pop(bucket string, key string, v any) error
+	Delete(bucket string, key string) error
+
+	Close() error
+	Clear() error
+}
+
+func changeValue(p any, v any) {
+	if v == nil {
+		return
+	}
+	rp := reflect.ValueOf(p)
+	rv := reflect.ValueOf(v)
+	if rv.Kind() == reflect.Slice {
+		if rv.Len() == 0 {
+			return
+		}
+		// get underlying type
+		tp := reflect.TypeOf(p).Elem().Elem()
+		for i := 0; i < rv.Len(); i++ {
+			// convert to underlying type
+			vv := rv.Index(i).Elem().Convert(tp)
+			rp.Elem().Set(reflect.Append(rp.Elem(), vv))
+		}
+	} else if rv.Kind() == reflect.Ptr {
+		rp.Elem().Set(rv.Elem())
+	} else {
+		rp.Elem().Set(rv)
+	}
+}
+
+var memData = make(map[string]map[string]any)
+
+type MemStorage struct {
+}
+
+func NewMemStorage() *MemStorage {
+	return &MemStorage{}
+}
+
+func (n *MemStorage) Setup(buckets []string) error {
+	for _, bucket := range buckets {
+		if _, ok := memData[bucket]; !ok {
+			memData[bucket] = make(map[string]any)
+		}
+	}
+	return nil
+}
+
+func (n *MemStorage) Put(bucket string, key string, v any) error {
+	memData[bucket][key] = v
+	return nil
+}
+
+func (n *MemStorage) Get(bucket string, key string, v any) (bool, error) {
+	if dv, ok := memData[bucket][key]; ok {
+		changeValue(v, dv)
+		return true, nil
+	}
+	return false, nil
+}
+
+func (n *MemStorage) List(bucket string, v any) error {
+	data := memData[bucket]
+	list := make([]any, 0)
+	for _, v := range data {
+		list = append(list, v)
+	}
+	changeValue(v, list)
+	return nil
+}
+
+func (n *MemStorage) Pop(bucket string, key string, v any) error {
+	data := memData[bucket]
+	changeValue(v, data[key])
+	delete(data, key)
+	return nil
+}
+
+func (n *MemStorage) Delete(bucket string, key string) error {
+	delete(memData[bucket], key)
+	return nil
+}
+
+func (n *MemStorage) Close() error {
+	return nil
+}
+
+func (n *MemStorage) Clear() error {
+	memData = make(map[string]map[string]any)
+	return nil
+}
+
+const (
+	dbFile = "gopeed.db"
+)
+
+type BoltStorage struct {
+	db   *bbolt.DB
+	path string
+}
+
+func NewBoltStorage(dir string) *BoltStorage {
+	path := filepath.Join(dir, dbFile)
+	db, err := bbolt.Open(path, 0600, nil)
+	if err != nil {
+		panic(err)
+	}
+	return &BoltStorage{
+		db:   db,
+		path: path,
+	}
+}
+
+func (b *BoltStorage) Setup(buckets []string) error {
+	return b.db.Update(func(tx *bbolt.Tx) error {
+		for _, bucket := range buckets {
+			_, err := tx.CreateBucketIfNotExists([]byte(bucket))
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
+func (b *BoltStorage) Put(bucket string, key string, v any) error {
+	buf, err := json.Marshal(v)
+	if err != nil {
+		return err
+	}
+	return b.db.Update(func(tx *bbolt.Tx) error {
+		b := tx.Bucket([]byte(bucket))
+		return b.Put([]byte(key), buf)
+	})
+}
+
+func (b *BoltStorage) Get(bucket string, key string, v any) (bool, error) {
+	var data []byte
+	err := b.db.View(func(tx *bbolt.Tx) error {
+		b := tx.Bucket([]byte(bucket))
+		data = b.Get([]byte(key))
+		return nil
+	})
+	if err != nil {
+		return false, err
+	}
+	if data == nil {
+		return false, nil
+	}
+	if err := json.Unmarshal(data, v); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+func (b *BoltStorage) List(bucket string, v any) error {
+	list := make([]any, 0)
+	tv := reflect.TypeOf(v).Elem().Elem()
+	if err := b.db.View(func(tx *bbolt.Tx) error {
+		b := tx.Bucket([]byte(bucket))
+		if err := b.ForEach(func(k, v []byte) error {
+			data := reflect.New(tv.Elem()).Interface()
+			if err := json.Unmarshal(v, &data); err != nil {
+				return err
+			}
+			list = append(list, data)
+			return nil
+		}); err != nil {
+			return err
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+	changeValue(v, list)
+	return nil
+}
+
+func (b *BoltStorage) Pop(bucket string, key string, v any) error {
+	var data []byte
+	err := b.db.Update(func(tx *bbolt.Tx) error {
+		b := tx.Bucket([]byte(bucket))
+		kb := []byte(key)
+		data = b.Get(kb)
+		return b.Delete(kb)
+	})
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(data, v)
+}
+
+func (b *BoltStorage) Delete(bucket string, key string) error {
+	return b.db.Update(func(tx *bbolt.Tx) error {
+		b := tx.Bucket([]byte(bucket))
+		return b.Delete([]byte(key))
+	})
+}
+
+func (b *BoltStorage) Close() error {
+	return b.db.Close()
+}
+
+func (b *BoltStorage) Clear() error {
+	if err := b.Close(); err != nil {
+		return err
+	}
+	if err := os.Remove(b.path); err != nil {
+		return err
+	}
+	return nil
+}

pkg/protocol/http/model.go

@@ -0,0 +1,11 @@
+package http
+
+type ReqExtra struct {
+	Method string            `json:"method"`
+	Header map[string]string `json:"header"`
+	Body   string            `json:"body"`
+}
+
+type OptsExtra struct {
+	Connections int `json:"connections"`
+}

pkg/rest/api.go

@@ -0,0 +1,200 @@
+package rest
+
+import (
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+	"github.com/gorilla/mux"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+func Resolve(w http.ResponseWriter, r *http.Request) {
+	var req base.Request
+	if ReadJson(r, w, &req) {
+		rr, err := Downloader.Resolve(&req)
+		if err != nil {
+			WriteJson(w, model.NewErrorResult(err.Error()))
+			return
+		}
+		WriteJson(w, model.NewOkResult(rr))
+	}
+}
+
+func CreateTask(w http.ResponseWriter, r *http.Request) {
+	var req model.CreateTask
+	if ReadJson(r, w, &req) {
+		var (
+			taskId string
+			err    error
+		)
+		if req.Rid != "" {
+			taskId, err = Downloader.Create(req.Rid, req.Opts)
+		} else if req.Req != nil {
+			taskId, err = Downloader.CreateDirect(req.Req, req.Opts)
+		} else {
+			WriteJson(w, model.NewErrorResult("param invalid: rid or req", model.CodeInvalidParam))
+			return
+		}
+		if err != nil {
+			WriteJson(w, model.NewErrorResult(err.Error()))
+			return
+		}
+		WriteJson(w, model.NewOkResult(taskId))
+	}
+}
+
+func PauseTask(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	taskId := vars["id"]
+	if taskId == "" {
+		WriteJson(w, model.NewErrorResult("param invalid: id", model.CodeInvalidParam))
+		return
+	}
+	if err := Downloader.Pause(taskId); err != nil {
+		WriteJson(w, model.NewErrorResult(err.Error()))
+		return
+	}
+	WriteJson(w, model.NewNilResult())
+}
+
+func ContinueTask(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	taskId := vars["id"]
+	if taskId == "" {
+		WriteJson(w, model.NewErrorResult("param invalid: id", model.CodeInvalidParam))
+		return
+	}
+	if err := Downloader.Continue(taskId); err != nil {
+		WriteJson(w, model.NewErrorResult(err.Error()))
+		return
+	}
+	WriteJson(w, model.NewNilResult())
+}
+
+func DeleteTask(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	taskId := vars["id"]
+	force := r.FormValue("force")
+	if taskId == "" {
+		WriteJson(w, model.NewErrorResult("param invalid: id", model.CodeInvalidParam))
+		return
+	}
+	if err := Downloader.Delete(taskId, force == "true"); err != nil {
+		WriteJson(w, model.NewErrorResult(err.Error()))
+		return
+	}
+	WriteJson(w, model.NewNilResult())
+}
+
+func GetTask(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	taskId := vars["id"]
+	if taskId == "" {
+		WriteJson(w, model.NewErrorResult("param invalid: id", model.CodeInvalidParam))
+		return
+	}
+	task := Downloader.GetTask(taskId)
+	if task == nil {
+		WriteJson(w, model.NewErrorResult("task not found", model.CodeTaskNotFound))
+		return
+	}
+	WriteJson(w, model.NewOkResult(task))
+}
+
+func GetTasks(w http.ResponseWriter, r *http.Request) {
+	status := r.FormValue("status")
+	if status == "" {
+		status = strings.Join([]string{
+			string(base.DownloadStatusReady),
+			string(base.DownloadStatusRunning),
+			string(base.DownloadStatusPause),
+			string(base.DownloadStatusError),
+			string(base.DownloadStatusDone),
+		}, ",")
+	}
+	statusArr := strings.Split(status, ",")
+	tasks := Downloader.GetTasks()
+	result := make([]*download.Task, 0)
+	for _, task := range tasks {
+		for _, s := range statusArr {
+			if task.Status == base.Status(s) {
+				result = append(result, task)
+			}
+		}
+	}
+	WriteJson(w, model.NewOkResult(result))
+}
+
+func GetConfig(w http.ResponseWriter, r *http.Request) {
+	WriteJson(w, model.NewOkResult(getServerConfig()))
+}
+
+func PutConfig(w http.ResponseWriter, r *http.Request) {
+	var cfg download.DownloaderStoreConfig
+	if ReadJson(r, w, &cfg) {
+		if err := Downloader.PutConfig(&cfg); err != nil {
+			WriteJson(w, model.NewErrorResult(err.Error()))
+			return
+		}
+	}
+	WriteJson(w, model.NewNilResult())
+}
+
+func DoProxy(w http.ResponseWriter, r *http.Request) {
+	target := r.Header.Get("X-Target-Uri")
+	if target == "" {
+		writeError(w, "param invalid: X-Target-Uri")
+		return
+	}
+	targetUrl, err := url.Parse(target)
+	if err != nil {
+		writeError(w, err.Error())
+		return
+	}
+	r.RequestURI = ""
+	r.URL = targetUrl
+	r.Host = targetUrl.Host
+	resp, err := http.DefaultClient.Do(r)
+	if err != nil {
+		writeError(w, err.Error())
+		return
+	}
+	defer resp.Body.Close()
+	for k, vv := range resp.Header {
+		for _, v := range vv {
+			w.Header().Set(k, v)
+		}
+	}
+	w.WriteHeader(resp.StatusCode)
+	buf, err := io.ReadAll(resp.Body)
+	if err != nil {
+		writeError(w, err.Error())
+		return
+	}
+	w.Write(buf)
+	//var reader io.ReadCloser
+	//switch resp.Header.Get("Content-Encoding") {
+	//case "gzip":
+	//	reader, err = gzip.NewReader(resp.Body)
+	//	defer reader.Close()
+	//default:
+	//	reader = resp.Body
+	//}
+	//if _, err := io.Copy(w, resp.Body); err != nil {
+	//	writeError(w, err.Error())
+	//	return
+	//}
+}
+
+func writeError(w http.ResponseWriter, msg string) {
+	w.WriteHeader(http.StatusInternalServerError)
+	w.Write([]byte(msg))
+}
+
+func getServerConfig() *download.DownloaderStoreConfig {
+	cfg, _ := Downloader.GetConfig()
+	return cfg
+}

pkg/rest/config.go

@@ -0,0 +1,6 @@
+package rest
+
+type Config struct {
+	Host string `json:"host"`
+	Port int    `json:"port"`
+}

pkg/rest/model/action.go

@@ -0,0 +1,7 @@
+package model
+
+type Command struct {
+	Protocol string `json:"protocol"`
+	Action   string `json:"action"`
+	Params   any    `json:"params"`
+}

pkg/rest/model/result.go

@@ -0,0 +1,47 @@
+package model
+
+type RespCode int
+
+const (
+	CodeOk RespCode = 0
+	// CodeError is the common error code
+	CodeError RespCode = 1000
+	// CodeUnauthorized is the error code for unauthorized
+	CodeUnauthorized RespCode = 1001
+	// CodeInvalidParam is the error code for invalid parameter
+	CodeInvalidParam RespCode = 1002
+	// CodeTaskNotFound is the error code for task not found
+	CodeTaskNotFound RespCode = 2001
+)
+
+type Result[T any] struct {
+	Code RespCode `json:"code"`
+	Msg  string   `json:"msg"`
+	Data T        `json:"data"`
+}
+
+func NewOkResult[T any](data T) *Result[T] {
+	return &Result[T]{
+		Code: CodeOk,
+		Data: data,
+	}
+}
+
+func NewNilResult() *Result[any] {
+	return &Result[any]{
+		Code: CodeOk,
+	}
+}
+
+func NewErrorResult(msg string, code ...RespCode) *Result[any] {
+	// if code is not provided, the default code is CodeError
+	c := CodeError
+	if len(code) > 0 {
+		c = code[0]
+	}
+
+	return &Result[any]{
+		Code: c,
+		Msg:  msg,
+	}
+}

pkg/rest/model/server.go

@@ -0,0 +1,41 @@
+package model
+
+import "io/fs"
+
+type Storage string
+
+const (
+	StorageMem  Storage = "mem"
+	StorageBolt Storage = "bolt"
+)
+
+type StartConfig struct {
+	Network         string  `json:"network"`
+	Address         string  `json:"address"`
+	RefreshInterval int     `json:"refreshInterval"`
+	Storage         Storage `json:"storage"`
+	StorageDir      string  `json:"storageDir"`
+	ApiToken        string  `json:"apiToken"`
+
+	WebEnable bool
+	WebFS     fs.FS
+}
+
+func (cfg *StartConfig) Init() *StartConfig {
+	if cfg.Network == "" {
+		cfg.Network = "tcp"
+	}
+	if cfg.Address == "" {
+		cfg.Address = "127.0.0.1:0"
+	}
+	if cfg.RefreshInterval == 0 {
+		cfg.RefreshInterval = 350
+	}
+	if cfg.Storage == "" {
+		cfg.Storage = StorageBolt
+	}
+	if cfg.StorageDir == "" {
+		cfg.StorageDir = "./"
+	}
+	return cfg
+}

pkg/rest/model/task.go

@@ -0,0 +1,9 @@
+package model
+
+import "github.com/GopeedLab/gopeed/pkg/base"
+
+type CreateTask struct {
+	Rid  string        `json:"rid"`
+	Req  *base.Request `json:"req"`
+	Opts *base.Options `json:"opts"`
+}

pkg/rest/server.go

@@ -0,0 +1,130 @@
+package rest
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+	"github.com/GopeedLab/gopeed/pkg/util"
+	"github.com/gorilla/handlers"
+	"github.com/gorilla/mux"
+	"net"
+	"net/http"
+)
+
+var (
+	srv *http.Server
+
+	Downloader *download.Downloader
+)
+
+func Start(startCfg *model.StartConfig) (int, error) {
+	srv, listener, err := BuildServer(startCfg)
+	if err != nil {
+		return 0, err
+	}
+
+	go func() {
+		if err := srv.Serve(listener); err != nil && err != http.ErrServerClosed {
+			// TODO log
+			panic(err)
+		}
+	}()
+
+	port := 0
+	if addr, ok := listener.Addr().(*net.TCPAddr); ok {
+		port = addr.Port
+	}
+	return port, nil
+}
+
+func Stop() {
+	if srv != nil {
+		if err := srv.Shutdown(context.TODO()); err != nil {
+			// TODO log
+		}
+	}
+	if Downloader != nil {
+		if err := Downloader.Close(); err != nil {
+			// TODO log
+		}
+	}
+}
+
+func BuildServer(startCfg *model.StartConfig) (*http.Server, net.Listener, error) {
+	if startCfg == nil {
+		startCfg = &model.StartConfig{}
+	}
+	startCfg.Init()
+
+	downloadCfg := &download.DownloaderConfig{
+		RefreshInterval: startCfg.RefreshInterval,
+	}
+	if startCfg.Storage == model.StorageBolt {
+		downloadCfg.Storage = download.NewBoltStorage(startCfg.StorageDir)
+	} else {
+		downloadCfg.Storage = download.NewMemStorage()
+	}
+	downloadCfg.Init()
+	Downloader = download.NewDownloader(downloadCfg)
+	if err := Downloader.Setup(); err != nil {
+		return nil, nil, err
+	}
+
+	if startCfg.Network == "unix" {
+		util.SafeRemove(startCfg.Address)
+	}
+
+	listener, err := net.Listen(startCfg.Network, startCfg.Address)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var r = mux.NewRouter()
+	r.Methods(http.MethodPost).Path("/api/v1/resolve").HandlerFunc(Resolve)
+	r.Methods(http.MethodPost).Path("/api/v1/tasks").HandlerFunc(CreateTask)
+	r.Methods(http.MethodPut).Path("/api/v1/tasks/{id}/pause").HandlerFunc(PauseTask)
+	r.Methods(http.MethodPut).Path("/api/v1/tasks/{id}/continue").HandlerFunc(ContinueTask)
+	r.Methods(http.MethodDelete).Path("/api/v1/tasks/{id}").HandlerFunc(DeleteTask)
+	r.Methods(http.MethodGet).Path("/api/v1/tasks/{id}").HandlerFunc(GetTask)
+	r.Methods(http.MethodGet).Path("/api/v1/tasks").HandlerFunc(GetTasks)
+	r.Methods(http.MethodGet).Path("/api/v1/config").HandlerFunc(GetConfig)
+	r.Methods(http.MethodPut).Path("/api/v1/config").HandlerFunc(PutConfig)
+	r.Path("/api/v1/proxy").HandlerFunc(DoProxy)
+	if startCfg.WebEnable {
+		r.PathPrefix("/").Handler(http.FileServer(http.FS(startCfg.WebFS)))
+	}
+
+	if startCfg.ApiToken != "" {
+		r.Use(func(h http.Handler) http.Handler {
+			return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				if r.Header.Get("X-Api-Token") != startCfg.ApiToken {
+					WriteJson(w, model.NewErrorResult("invalid token", model.CodeUnauthorized))
+					return
+				}
+				h.ServeHTTP(w, r)
+			})
+		})
+	}
+
+	srv = &http.Server{Handler: handlers.CORS(
+		handlers.AllowedHeaders([]string{"Content-Type", "X-Api-Token", "X-Target-Uri"}),
+		handlers.AllowedMethods([]string{"GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"}),
+		handlers.AllowedOrigins([]string{"*"}),
+	)(r)}
+	return srv, listener, nil
+}
+
+func ReadJson(r *http.Request, w http.ResponseWriter, v any) bool {
+	if err := json.NewDecoder(r.Body).Decode(v); err != nil {
+		WriteJson(w, model.NewErrorResult(err.Error()))
+		return false
+	}
+	return true
+}
+
+func WriteJson(w http.ResponseWriter, v any) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(v)
+}

pkg/rest/server_test.go

@@ -0,0 +1,354 @@
+package rest
+
+import (
+	"bytes"
+	"crypto/md5"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/GopeedLab/gopeed/internal/test"
+	"github.com/GopeedLab/gopeed/pkg/base"
+	"github.com/GopeedLab/gopeed/pkg/download"
+	"github.com/GopeedLab/gopeed/pkg/rest/model"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+)
+
+var (
+	restPort int
+
+	taskReq = &base.Request{
+		Extra: map[string]any{
+			"method": "",
+			"header": map[string]string{
+				"User-Agent": "gopeed",
+			},
+			"body": "",
+		},
+	}
+	taskRes = &base.Resource{
+		Name:  test.BuildName,
+		Size:  test.BuildSize,
+		Range: true,
+		Files: []*base.FileInfo{
+			{
+				Name: test.BuildName,
+				Path: "",
+				Size: test.BuildSize,
+			},
+		},
+	}
+	createReq = &model.CreateTask{
+		Req: taskReq,
+		Opts: &base.Options{
+			Path: test.Dir,
+			Name: test.DownloadName,
+			Extra: map[string]any{
+				"connections": 2,
+			},
+		},
+	}
+)
+
+func TestResolve(t *testing.T) {
+	doTest(func() {
+		resp := httpRequestCheckOk[*download.ResolveResult](http.MethodPost, "/api/v1/resolve", taskReq)
+		if !test.JsonEqual(taskRes, resp.Res) {
+			t.Errorf("Resolve() got = %v, want %v", test.ToJson(resp.Res), test.ToJson(taskRes))
+		}
+	})
+}
+
+func TestCreateTask(t *testing.T) {
+	doTest(func() {
+		var wg sync.WaitGroup
+		wg.Add(1)
+		Downloader.Listener(func(event *download.Event) {
+			if event.Key == download.EventKeyFinally {
+				wg.Done()
+			}
+		})
+
+		taskId := httpRequestCheckOk[string](http.MethodPost, "/api/v1/tasks", createReq)
+		if taskId == "" {
+			t.Fatal("create task failed")
+		}
+
+		wg.Wait()
+		want := test.FileMd5(test.BuildFile)
+		got := test.FileMd5(test.DownloadFile)
+		if want != got {
+			t.Errorf("CreateTask() got = %v, want %v", got, want)
+		}
+	})
+}
+
+func TestPauseAndContinueTask(t *testing.T) {
+	doTest(func() {
+		type result struct {
+			pauseCount    int
+			continueCount int
+			md5           string
+		}
+
+		var got = result{
+			pauseCount:    0,
+			continueCount: 0,
+			md5:           "",
+		}
+		var wg sync.WaitGroup
+		wg.Add(1)
+		Downloader.Listener(func(event *download.Event) {
+			switch event.Key {
+			case download.EventKeyPause:
+				got.pauseCount++
+			case download.EventKeyContinue:
+				got.continueCount++
+			case download.EventKeyFinally:
+				wg.Done()
+			}
+		})
+
+		taskId := httpRequestCheckOk[string](http.MethodPost, "/api/v1/tasks", createReq)
+		t1 := httpRequestCheckOk[*download.Task](http.MethodGet, "/api/v1/tasks/"+taskId, nil)
+		if t1.Status != base.DownloadStatusRunning {
+			t.Errorf("CreateTask() got = %v, want %v", t1.Status, base.DownloadStatusRunning)
+		}
+		httpRequestCheckOk[any](http.MethodPut, "/api/v1/tasks/"+taskId+"/pause", nil)
+		t2 := httpRequestCheckOk[*download.Task](http.MethodGet, "/api/v1/tasks/"+taskId, nil)
+		if t2.Status != base.DownloadStatusPause {
+			t.Errorf("PauseTask() got = %v, want %v", t2.Status, base.DownloadStatusPause)
+		}
+		httpRequestCheckOk[any](http.MethodPut, "/api/v1/tasks/"+taskId+"/continue", nil)
+		t3 := httpRequestCheckOk[*download.Task](http.MethodGet, "/api/v1/tasks/"+taskId, nil)
+		if t3.Status != base.DownloadStatusRunning {
+			t.Errorf("ContinueTask() got = %v, want %v", t3.Status, base.DownloadStatusRunning)
+		}
+
+		wg.Wait()
+		want := result{
+			pauseCount:    1,
+			continueCount: 1,
+			md5:           test.FileMd5(test.BuildFile),
+		}
+		got.md5 = test.FileMd5(test.DownloadFile)
+		if !reflect.DeepEqual(got, want) {
+			t.Errorf("PauseAndContinueTask() got = %v, want %v", got, want)
+		}
+	})
+}
+
+func TestDeleteTask(t *testing.T) {
+	doTest(func() {
+		taskId := httpRequestCheckOk[string](http.MethodPost, "/api/v1/tasks", createReq)
+		time.Sleep(time.Millisecond * 200)
+		httpRequestCheckOk[any](http.MethodDelete, "/api/v1/tasks/"+taskId, nil)
+		code, _ := httpRequest[*download.Task](http.MethodGet, "/api/v1/tasks/"+taskId, nil)
+		checkCode(code, model.CodeTaskNotFound)
+	})
+}
+
+func TestDeleteTaskForce(t *testing.T) {
+	doTest(func() {
+		taskId := httpRequestCheckOk[string](http.MethodPost, "/api/v1/tasks", createReq)
+		time.Sleep(time.Millisecond * 200)
+		httpRequestCheckOk[any](http.MethodDelete, "/api/v1/tasks/"+taskId+"?force=true", nil)
+		code, _ := httpRequest[*download.Task](http.MethodGet, "/api/v1/tasks/"+taskId, nil)
+		checkCode(code, model.CodeTaskNotFound)
+		if _, err := os.Stat(test.DownloadFile); !errors.Is(err, os.ErrNotExist) {
+			t.Errorf("DeleteTaskForce() got = %v, want %v", err, os.ErrNotExist)
+		}
+	})
+}
+
+func TestGetTasks(t *testing.T) {
+	doTest(func() {
+		var wg sync.WaitGroup
+		wg.Add(1)
+		Downloader.Listener(func(event *download.Event) {
+			if event.Key == download.EventKeyFinally {
+				wg.Done()
+			}
+		})
+
+		httpRequestCheckOk[string](http.MethodPost, fmt.Sprintf("/api/v1/tasks?status=%s,%s",
+			base.DownloadStatusReady, base.DownloadStatusRunning), createReq)
+		httpRequestCheckOk[[]*download.Task](http.MethodGet, "/api/v1/tasks", nil)
+
+		wg.Wait()
+		r := httpRequestCheckOk[[]*download.Task](http.MethodGet, fmt.Sprintf("/api/v1/tasks?status=%s",
+			base.DownloadStatusDone), nil)
+		if r[0].Status != base.DownloadStatusDone {
+			t.Errorf("GetTasks() got = %v, want %v", r[0].Status, base.DownloadStatusDone)
+		}
+		r = httpRequestCheckOk[[]*download.Task](http.MethodGet, fmt.Sprintf("/api/v1/tasks?status=%s,%s",
+			base.DownloadStatusReady, base.DownloadStatusRunning), nil)
+		if len(r) > 0 {
+			t.Errorf("GetTasks() got = %v, want %v", len(r), 0)
+		}
+	})
+}
+
+func TestGetAndPutConfig(t *testing.T) {
+	doTest(func() {
+		cfg := httpRequestCheckOk[*download.DownloaderStoreConfig](http.MethodGet, "/api/v1/config", nil)
+		cfg.DownloadDir = "./download"
+		cfg.Extra = map[string]any{
+			"serverConfig": &Config{
+				Host: "127.0.0.1",
+				Port: 8080,
+			},
+			"theme": "dark",
+		}
+		httpRequestCheckOk[any](http.MethodPut, "/api/v1/config", cfg)
+
+		newCfg := httpRequestCheckOk[*download.DownloaderStoreConfig](http.MethodGet, "/api/v1/config", nil)
+		if !test.JsonEqual(cfg, newCfg) {
+			t.Errorf("GetAndPutConfig() got = %v, want %v", test.ToJson(newCfg), test.ToJson(cfg))
+		}
+	})
+}
+
+func TestDoProxy(t *testing.T) {
+	doTest(func() {
+		code, respBody := doHttpRequest0(http.MethodGet, "/api/v1/proxy", map[string]string{
+			"X-Target-Uri": "https://github.com/GopeedLab/gopeed/raw/695da7ea87d2b455552b709d3cb4d7879484d4d1/README.md",
+		}, nil)
+		if code != http.StatusOK {
+			t.Errorf("DoProxy() got = %v, want %v", code, http.StatusOK)
+		}
+		want := "4ee193b676f1ebb2ad810e016350d52a"
+		got := fmt.Sprintf("%x", md5.Sum(respBody))
+		if got != want {
+			t.Errorf("DoProxy() got = %v, want %v", got, want)
+		}
+	})
+
+	doTest(func() {
+		code, _ := doHttpRequest0(http.MethodGet, "/api/v1/proxy", map[string]string{
+			"X-Target-Uri": "https://github.com/GopeedLab/gopeed/raw/695da7ea87d2b455552b709d3cb4d7879484d4d1/NOT_FOUND",
+		}, nil)
+		if code != http.StatusNotFound {
+			t.Errorf("DoProxy() got = %v, want %v", code, http.StatusNotFound)
+		}
+	})
+}
+
+func TestAuthorization(t *testing.T) {
+	var cfg = &model.StartConfig{}
+	cfg.Init()
+	cfg.ApiToken = "123456"
+	fileListener := doStart(cfg)
+	defer func() {
+		if err := fileListener.Close(); err != nil {
+			panic(err)
+		}
+		Stop()
+	}()
+
+	code, _ := doHttpRequest[any](http.MethodGet, "/api/v1/config", nil, nil)
+	checkCode(code, model.CodeUnauthorized)
+
+	code, _ = doHttpRequest[any](http.MethodGet, "/api/v1/config", map[string]string{
+		"X-Api-Token": cfg.ApiToken,
+	}, nil)
+	checkCode(code, model.CodeOk)
+
+}
+
+func doTest(handler func()) {
+	testFunc := func(storage model.Storage) {
+		var cfg = &model.StartConfig{}
+		cfg.Init()
+		cfg.Storage = storage
+		fileListener := doStart(cfg)
+		defer func() {
+			if err := fileListener.Close(); err != nil {
+				panic(err)
+			}
+			Stop()
+		}()
+		defer Downloader.Clear()
+		taskReq.URL = "http://" + fileListener.Addr().String() + "/" + test.BuildName
+		handler()
+	}
+	testFunc(model.StorageMem)
+	testFunc(model.StorageBolt)
+}
+
+func doStart(cfg *model.StartConfig) net.Listener {
+	port, err := Start(cfg)
+	if err != nil {
+		panic(err)
+	}
+	restPort = port
+	return test.StartTestFileServer()
+}
+
+func doHttpRequest0(method string, path string, headers map[string]string, body any) (int, []byte) {
+	var reader io.Reader
+	if body != nil {
+		buf, _ := json.Marshal(body)
+		reader = bytes.NewBuffer(buf)
+	}
+
+	request, err := http.NewRequest(method, fmt.Sprintf("http://127.0.0.1:%d%s", restPort, path), reader)
+	if err != nil {
+		panic(err)
+	}
+	if headers != nil {
+		for k, v := range headers {
+			request.Header.Set(k, v)
+		}
+	}
+	response, err := http.DefaultClient.Do(request)
+	if err != nil {
+		panic(err)
+	}
+	defer response.Body.Close()
+	respBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		panic(err)
+	}
+
+	return response.StatusCode, respBody
+}
+
+func doHttpRequest[T any](method string, path string, headers map[string]string, body any) (int, *model.Result[T]) {
+	statusCode, respBody := doHttpRequest0(method, path, headers, body)
+	if statusCode != http.StatusOK {
+		panic(fmt.Sprintf("http request failed, status code: %d", statusCode))
+	}
+
+	var r model.Result[T]
+	if err := json.Unmarshal(respBody, &r); err != nil {
+		panic(err)
+	}
+	return int(r.Code), &r
+}
+
+func httpRequest[T any](method string, path string, body any) (int, *model.Result[T]) {
+	return doHttpRequest[T](method, path, nil, body)
+}
+
+func httpRequestCheckOk[T any](method string, path string, body any) T {
+	code, result := httpRequest[T](method, path, body)
+	checkOk(code)
+	return result.Data
+}
+
+func checkOk(code int) {
+	checkCode(code, model.CodeOk)
+}
+
+func checkCode(code int, exceptCode model.RespCode) {
+	if code != int(exceptCode) {
+		panic(fmt.Sprintf("code got = %d, want %d", code, exceptCode))
+	}
+}

pkg/util/bytefmt.go

@@ -0,0 +1,23 @@
+package util
+
+import (
+	"fmt"
+	"math"
+)
+
+var unitArr = []string{"B", "KB", "MB", "GB", "TB", "EB"}
+
+func ByteFmt(size int64) string {
+	if size == 0 {
+		return "unknown"
+	}
+	fs := float64(size)
+	p := int(math.Log(fs) / math.Log(1024))
+	val := fs / math.Pow(1024, float64(p))
+	_, frac := math.Modf(val)
+	if frac > 0 {
+		return fmt.Sprintf("%.1f%s", math.Floor(val*10)/10, unitArr[p])
+	} else {
+		return fmt.Sprintf("%d%s", int(val), unitArr[p])
+	}
+}

pkg/util/bytefmt_test.go

@@ -0,0 +1,62 @@
+package util
+
+import "testing"
+
+func TestByteFmt(t *testing.T) {
+	type args struct {
+		size int64
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "unknown",
+			args: args{size: int64(0)},
+			want: "unknown",
+		},
+		{
+			name: "100B",
+			args: args{size: int64(100)},
+			want: "100B",
+		},
+		{
+			name: "1KB",
+			args: args{size: int64(1024)},
+			want: "1KB",
+		},
+		{
+			name: "1.9KB",
+			args: args{size: int64(1024*2 - 1)},
+			want: "1.9KB",
+		},
+		{
+			name: "2KB",
+			args: args{size: int64(1024 * 2)},
+			want: "2KB",
+		},
+		{
+			name: "1MB",
+			args: args{size: int64(1024 * 1024)},
+			want: "1MB",
+		},
+		{
+			name: "1.9MB",
+			args: args{size: int64(1024*1024*2 - 1)},
+			want: "1.9MB",
+		},
+		{
+			name: "2MB",
+			args: args{size: int64(1024 * 1024 * 2)},
+			want: "2MB",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ByteFmt(tt.args.size); got != tt.want {
+				t.Errorf("ByteFmt() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

pkg/util/json.go

@@ -0,0 +1,14 @@
+package util
+
+import "encoding/json"
+
+func MapToStruct(s any, v any) error {
+	if s == nil {
+		return nil
+	}
+	b, err := json.Marshal(s)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(b, v)
+}

pkg/util/path.go

@@ -0,0 +1,99 @@
+package util
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	syspath "path"
+	"strings"
+)
+
+func Dir(path string) string {
+	dir := syspath.Dir(path)
+	if dir == "." {
+		return ""
+	}
+	return dir
+}
+
+func Filepath(path string, originName string, customName string) string {
+	if customName == "" {
+		customName = originName
+	}
+	return syspath.Join(path, customName)
+}
+
+// SafeRemove remove file safely, ignoring errors if the path does not exist.
+func SafeRemove(name string) error {
+	if err := os.Remove(name); err != nil && !errors.Is(err, os.ErrNotExist) {
+		return err
+	}
+	return nil
+}
+
+// CheckDuplicateAndRename rename duplicate file, add suffix (1) (2) ...
+// if file name is a.txt, rename to a (1).txt
+// if directory name is a, rename to a (1)
+// return new name
+func CheckDuplicateAndRename(path string) (string, error) {
+	dir := syspath.Dir(path)
+	name := syspath.Base(path)
+
+	// if file not exists, return directly
+	_, err := os.Stat(path)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return name, nil
+		}
+		return "", err
+	}
+
+	index := strings.LastIndex(name, ".")
+	var nameTpl string
+	if index == -1 {
+		nameTpl = name + " (%d)"
+	} else {
+		nameTpl = name[:index] + " (%d)" + name[index:]
+	}
+	for i := 1; ; i++ {
+		newName := fmt.Sprintf(nameTpl, i)
+		newPath := syspath.Join(dir, newName)
+		if _, err := os.Stat(newPath); os.IsNotExist(err) {
+			return newName, nil
+		}
+	}
+}
+
+// GetSingleDir get the top level single folder name,if not exist, return empty string
+func GetSingleDir(paths []string) string {
+	if len(paths) == 0 {
+		return ""
+	}
+	split := strings.Split(paths[0], "/")
+	if len(split) == 0 || split[0] == "" {
+		return ""
+	}
+	dir := split[0]
+	for i := 1; i < len(paths); i++ {
+		if !strings.HasPrefix(paths[i], dir) {
+			return ""
+		}
+	}
+	return dir
+}
+
+// check directory is empty
+func isEmpty(name string) (bool, error) {
+	f, err := os.Open(name)
+	if err != nil {
+		return false, err
+	}
+	defer f.Close()
+
+	_, err = f.Readdirnames(1) // Or f.Readdir(1)
+	if err == io.EOF {
+		return true, nil
+	}
+	return false, err // Either not empty or error, suits both cases
+}

pkg/util/path_test.go

@@ -0,0 +1,201 @@
+package util
+
+import (
+	"os"
+	"testing"
+)
+
+func TestDir(t *testing.T) {
+	type args struct {
+		path string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "empty path",
+			args: args{
+				path: ".",
+			},
+			want: "",
+		},
+		{
+			name: "normal path case 1",
+			args: args{
+				path: "./a/b/c/1.txt",
+			},
+			want: "a/b/c",
+		},
+		{
+			name: "normal path case 2",
+			args: args{
+				path: "a/b/c/1.txt",
+			},
+			want: "a/b/c",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Dir(tt.args.path); got != tt.want {
+				t.Errorf("Dir() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestFilepath(t *testing.T) {
+	type args struct {
+		path       string
+		originName string
+		customName string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "origin name",
+			args: args{
+				path:       "/Downloads",
+				originName: "1.txt",
+				customName: "",
+			},
+			want: "/Downloads/1.txt",
+		},
+		{
+			name: "origin name",
+			args: args{
+				path:       "/Downloads",
+				originName: "1.txt",
+				customName: "2.txt",
+			},
+			want: "/Downloads/2.txt",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Filepath(tt.args.path, tt.args.originName, tt.args.customName); got != tt.want {
+				t.Errorf("Filepath() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSafeRemove(t *testing.T) {
+	name := "test_safe_remove.data"
+	file, err := os.Create(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := file.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if err := SafeRemove(name); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(name); err == nil {
+		t.Fatal(err)
+	}
+
+	if err := SafeRemove("test_safe_remove_not_exist.data"); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestGetSingleDir(t *testing.T) {
+	type args struct {
+		paths []string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "empty",
+			args: args{
+				paths: []string{},
+			},
+			want: "",
+		},
+		{
+			name: "blank",
+			args: args{
+				paths: []string{""},
+			},
+			want: "",
+		},
+		{
+			name: "blank multi",
+			args: args{
+				paths: []string{"", "a"},
+			},
+			want: "",
+		},
+		{
+			name: "multi dir not single",
+			args: args{
+				paths: []string{"a", "b"},
+			},
+			want: "",
+		},
+		{
+			name: "single dir",
+			args: args{
+				paths: []string{"a"},
+			},
+			want: "a",
+		},
+		{
+			name: "multi dir single",
+			args: args{
+				paths: []string{"a/b", "a/c"},
+			},
+			want: "a",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := GetSingleDir(tt.args.paths); got != tt.want {
+				t.Errorf("IsSingleDir() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestCheckDuplicateAndRename(t *testing.T) {
+	doCheckDuplicateAndRename(t, []string{}, "a.txt", "a.txt")
+	doCheckDuplicateAndRename(t, []string{"a.txt"}, "a.txt", "a (1).txt")
+	doCheckDuplicateAndRename(t, []string{"a.txt", "a (1).txt"}, "a.txt", "a (2).txt")
+
+	doCheckDuplicateAndRename(t, []string{}, "a", "a")
+	doCheckDuplicateAndRename(t, []string{"a"}, "a", "a (1)")
+	doCheckDuplicateAndRename(t, []string{"a", "a (1)"}, "a", "a (2)")
+}
+
+func doCheckDuplicateAndRename(t *testing.T, exitsPaths []string, path string, except string) {
+	for _, path := range exitsPaths {
+		if err := os.MkdirAll(path, 0755); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	defer func() {
+		for _, path := range exitsPaths {
+			if err := os.RemoveAll(path); err != nil {
+				t.Fatal(err)
+			}
+		}
+	}()
+
+	got, err := CheckDuplicateAndRename(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != except {
+		t.Errorf("CheckDuplicateAndRename() = %v, want %v", got, except)
+	}
+}

pkg/util/timer.go

@@ -0,0 +1,26 @@
+package util
+
+import "time"
+
+type Timer struct {
+	t    int64
+	used int64
+}
+
+func NewTimer(used int64) *Timer {
+	return &Timer{
+		used: used,
+	}
+}
+
+func (t *Timer) Start() {
+	t.t = time.Now().UnixNano()
+}
+
+func (t *Timer) Pause() {
+	t.used += time.Now().UnixNano() - t.t
+}
+
+func (t *Timer) Used() int64 {
+	return (time.Now().UnixNano() - t.t) + t.used
+}

pkg/util/url.go

@@ -0,0 +1,13 @@
+package util
+
+import "strings"
+
+const FileSchema = "FILE"
+
+func ParseSchema(url string) string {
+	index := strings.Index(url, ":")
+	if index == -1 {
+		return FileSchema
+	}
+	return strings.ToUpper(url[:index])
+}

pkg/util/url_test.go

@@ -0,0 +1,50 @@
+package util
+
+import "testing"
+
+func TestParseSchema(t *testing.T) {
+	type args struct {
+		url string
+	}
+	tests := []struct {
+		name string
+		args args
+		want string
+	}{
+		{
+			name: "http",
+			args: args{
+				url: "http://www.google.com",
+			},
+			want: "HTTP",
+		},
+		{
+			name: "https",
+			args: args{
+				url: "https://www.google.com",
+			},
+			want: "HTTPS",
+		},
+		{
+			name: "file",
+			args: args{
+				url: "file:///home/bt.torrent",
+			},
+			want: "FILE",
+		},
+		{
+			name: "file-no-scheme",
+			args: args{
+				url: "/home/bt.torrent",
+			},
+			want: "FILE",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := ParseSchema(tt.args.url); got != tt.want {
+				t.Errorf("ParseSchema() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

protocol/bt/client.go

@@ -1,57 +0,0 @@
-package bt
-
-import (
-	"crypto/rand"
-	"github.com/monkeyWie/gopeed-core/protocol/bt/metainfo"
-	"github.com/monkeyWie/gopeed-core/protocol/bt/torrent"
-	"net/url"
-)
-
-type Client struct {
-	PeerID [20]byte
-
-	// torrents []torrent.Torrent
-}
-
-func NewClient() *Client {
-	client := &Client{}
-
-	// 生成Peer ID，规则为前三位固定字母(-GP)+SemVer(xyz)+End(-),后面随机生成
-	// 参考：https://wiki.theory.org/index.php/BitTorrentSpecification#peer_id
-	peerID := [20]byte{'-', 'G', 'P', '0', '0', '1', '-'}
-	_, err := rand.Read(peerID[7:])
-	if err != nil {
-		panic(err)
-	}
-	client.PeerID = peerID
-
-	return client
-}
-
-func (client *Client) AddTorrent(rawurl string) error {
-	parse, err := url.Parse(rawurl)
-	if err != nil {
-		return err
-	}
-	var metaInfo *metainfo.MetaInfo
-	switch parse.Scheme {
-	case "magnet":
-	// TODO 磁力链接解析
-	default:
-		metaInfo, err = metainfo.ParseFromFile(rawurl)
-		break
-	}
-	if err != nil {
-		return err
-	}
-
-	torrent := torrent.Torrent{
-		// client:   client,
-		MetaInfo: metaInfo,
-	}
-	// client.torrents = append(client.torrents, torrent)
-
-	torrent.Download("")
-
-	return nil
-}

protocol/bt/client_test.go

@@ -1,21 +0,0 @@
-package bt
-
-import (
-	"testing"
-)
-
-func TestClient_AddTorrent(t *testing.T) {
-	/*client := NewClient()
-	metaInfo, err := metainfo.ParseFromFile("testdata/Game.of.Thrones.S08E05.720p.WEB.H264-MEMENTO.torrent")
-	if err != nil {
-		panic(err)
-	}
-	torrent := &
-	torrent.MetaInfo.Announce = "udp://tracker.opentrackr.org:1337/announce"
-	torrent.MetaInfo.AnnounceList = [][]string{}
-	err = torrent.Tracker()
-	if err != nil {
-		panic(err)
-		return
-	}*/
-}

protocol/bt/dht/ping.go

@@ -1,34 +0,0 @@
-package dht
-
-import (
-	"github.com/marksamman/bencode"
-	"net"
-)
-
-func ping() string {
-	data := map[string]interface{}{
-		"t": "aa",
-		"y": "q",
-		"q": "ping",
-		"a": map[string]interface{}{"id": "abcdefghij0123456789"},
-	}
-	req := bencode.Encode(data)
-	// session.add_dht_router("router.utorrent.com", 6881)
-	// session.add_dht_router("router.bittorrent.com", 6881)
-	// session.add_dht_router("dht.transmissionbt.com", 6881)
-	// session.add_dht_router("router.bitcomet.com", 6881)
-	// session.add_dht_router("dht.aelitis.com", 6881)
-	dial, err := net.Dial("udp", "router.utorrent.com:6881")
-	if err != nil {
-		panic(err)
-	}
-	dial.Write(req)
-
-	reps := make([]byte, 65535)
-
-	n, err := dial.Read(reps)
-	if err != nil {
-		panic(err)
-	}
-	return string(reps[:n])
-}

protocol/bt/dht/ping_test.go

@@ -1,7 +0,0 @@
-package dht
-
-import "testing"
-
-func Test_ping(t *testing.T) {
-	println(ping())
-}

protocol/bt/metainfo/metainfo.go

@@ -1,144 +0,0 @@
-package metainfo
-
-import (
-	"crypto/sha1"
-	"encoding/json"
-	"os"
-
-	"github.com/marksamman/bencode"
-)
-
-type MetaInfo struct {
-	// tracker URL
-	// http://bittorrent.org/beps/bep_0003.html#metainfo-files
-	Announce string `json:"announce"`
-	// tracker URL
-	// http://bittorrent.org/beps/bep_0012.html
-	AnnounceList [][]string `json:"announce-list"`
-	Comment      string     `json:"comment"`
-	CreatedBy    string     `json:"created by"`
-	CreationDate int64      `json:"creation date"`
-	Encoding     string     `json:"encoding"`
-	// http://bittorrent.org/beps/bep_0019.html
-	UrlList []string `json:"url-list"`
-	Info    *Info    `json:"info"`
-
-	infoHash    [20]byte
-	totalSize   uint64
-	fileDetails []*FileDetail
-}
-
-type Info struct {
-	Name        string `json:"name"`
-	PieceLength int    `json:"piece length"`
-	Pieces      [][20]byte
-	// 单个文件时，length为该文件的长度
-	Length uint64 `json:"length"`
-	// 多个文件
-	Files []*File `json:"files"`
-}
-
-type File struct {
-	Length uint64   `json:"length"`
-	Path   []string `json:"path"`
-}
-
-type FileDetail struct {
-	Length uint64
-	Path   []string
-	Begin  int64
-	End    int64
-}
-
-type PieceMapping struct {
-	file  int
-	begin int64
-	end   int64
-}
-
-func ParseFromFile(path string) (*MetaInfo, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	// http://bittorrent.org/beps/bep_0003.html#bencoding
-	btDecode, err := bencode.Decode(file)
-	if err != nil {
-		return nil, err
-	}
-	bytes, err := json.Marshal(btDecode)
-	if err != nil {
-		return nil, err
-	}
-	var metaInfo MetaInfo
-	json.Unmarshal(bytes, &metaInfo)
-	if metaInfo.Info != nil {
-		// encode info hash
-		info := btDecode["info"].(map[string]interface{})
-		infoBtEncode := bencode.Encode(info)
-		metaInfo.infoHash = sha1.Sum(infoBtEncode[:])
-		// Split pieces hash
-		pieces := info["pieces"].(string)
-		if pieces != "" {
-			metaInfo.Info.Pieces = make([][20]byte, len(pieces)/20)
-			// pieces parse
-			for i := range metaInfo.Info.Pieces {
-				begin := i * 20
-				metaInfo.Info.Pieces[i] = [20]byte{}
-				copy(metaInfo.Info.Pieces[i][:], pieces[begin:begin+20])
-			}
-		}
-	}
-	calcFileSize(&metaInfo)
-	return &metaInfo, nil
-}
-
-// 获取某个分片的大小
-func (metaInfo *MetaInfo) GetPieceLength(index int) int {
-	// 是否为最后一个分片
-	if index == len(metaInfo.Info.Pieces)-1 {
-		size := metaInfo.totalSize % uint64(metaInfo.Info.PieceLength)
-		if size > 0 {
-			return int(size)
-		}
-	}
-	return metaInfo.Info.PieceLength
-}
-
-// 获取所有文件的大小
-func (metaInfo *MetaInfo) GetTotalSize() uint64 {
-	return metaInfo.totalSize
-}
-
-// 获取info hash
-func (metaInfo *MetaInfo) GetInfoHash() [20]byte {
-	return metaInfo.infoHash
-}
-
-// 获取所有文件的开始偏移字节
-func (metaInfo *MetaInfo) GetFileDetails() []*FileDetail {
-	return metaInfo.fileDetails
-}
-
-// 计算所有文件的大小
-func calcFileSize(metaInfo *MetaInfo) {
-	if metaInfo.Info != nil {
-		fileCount := len(metaInfo.Info.Files)
-		if fileCount > 0 {
-			metaInfo.fileDetails = make([]*FileDetail, fileCount)
-			var length uint64
-			for i, f := range metaInfo.Info.Files {
-				metaInfo.fileDetails[i] = &FileDetail{
-					Length: f.Length,
-					Path:   f.Path,
-					Begin:  int64(length),
-					End:    int64(length + f.Length),
-				}
-				length += f.Length
-			}
-			metaInfo.totalSize = length
-		} else {
-			metaInfo.totalSize = metaInfo.Info.Length
-		}
-	}
-}

protocol/bt/metainfo/metainfo_test.go

@@ -1,22 +0,0 @@
-package metainfo
-
-import (
-	"encoding/hex"
-	"fmt"
-	"testing"
-)
-
-func TestParseFromFile(t *testing.T) {
-	// metaInfo, err := ParseFromFile("../testdata/Game.of.Thrones.S08E05.720p.WEB.H264-MEMENTO.torrent")
-	metaInfo, err := ParseFromFile("E:\\bt\\win10.torrent")
-	if err != nil {
-		panic(err)
-	}
-	fmt.Printf("%+v\n", metaInfo.AnnounceList)
-	for _, file := range metaInfo.Info.Files {
-		fmt.Printf("%+v\n", file)
-	}
-	fmt.Printf("%+v\n", metaInfo.Info.PieceLength)
-	fmt.Printf("%+v\n", len(metaInfo.Info.Pieces))
-	fmt.Printf("%+v\n", hex.EncodeToString(metaInfo.infoHash[:]))
-}

protocol/bt/peer/handshake.go

@@ -1,51 +0,0 @@
-package peer
-
-import (
-	"bytes"
-	"encoding/binary"
-)
-
-const (
-	ProtocolIdentifier       = "BitTorrent protocol"
-	ProtocolIdentifierLength = 0x13
-)
-
-// Handshake of Peer wire protocol
-// Per https://wiki.theory.org/index.php/BitTorrentSpecification#Handshake
-type Handshake struct {
-	Pstrlen  byte
-	Pstr     [19]byte
-	Reserved [8]byte
-	InfoHash [20]byte
-	PeerID   [20]byte
-}
-
-func NewHandshake(reserved [8]byte, infoHash [20]byte, peerID [20]byte) *Handshake {
-	var arr [ProtocolIdentifierLength]byte
-	copy(arr[:], ProtocolIdentifier)
-	return &Handshake{
-		Pstrlen:  ProtocolIdentifierLength,
-		Pstr:     arr,
-		Reserved: reserved,
-		InfoHash: infoHash,
-		PeerID:   peerID,
-	}
-}
-
-func (handshake *Handshake) Encode() []byte {
-	writer := new(bytes.Buffer)
-	err := binary.Write(writer, binary.BigEndian, handshake)
-	if err != nil {
-		panic(err)
-	}
-	return writer.Bytes()
-}
-
-func (handshake *Handshake) Decode(buf []byte) error {
-	reader := bytes.NewReader(buf)
-	err := binary.Read(reader, binary.BigEndian, handshake)
-	if err != nil {
-		return err
-	}
-	return nil
-}

protocol/bt/peer/message/message.go

@@ -1,143 +0,0 @@
-package message
-
-import (
-	"encoding/binary"
-)
-
-// message ID
-type ID byte
-
-const (
-	IdChoke ID = iota
-	IdUnchoke
-	IdInterested
-	IdNotInterested
-	IdHave
-	IdBitfield
-	IdRequest
-	IdPiece
-	IdCancel
-)
-
-/*type Message struct {
-	Length  uint32
-	ID      MessageID
-	Payload []byte
-}*/
-
-type base struct {
-	id ID
-}
-
-func (base *base) ID() ID {
-	return base.id
-}
-
-func (base *base) Encode() []byte {
-	return encode(base, nil)
-}
-
-func (base *base) Decode(body []byte) {
-
-}
-
-type Message interface {
-	ID() ID
-	Encode() []byte
-	Decode(body []byte)
-}
-
-type TestMsg struct {
-	*base
-}
-
-func (base *TestMsg) Encode() []byte {
-	return []byte{1, 2, 3}
-}
-
-func (base *TestMsg) Decode(body []byte) {
-}
-
-func encode(base *base, body []byte) []byte {
-	buf := make([]byte, 5+len(body))
-	binary.BigEndian.PutUint32(buf, uint32(len(buf)))
-	buf[4] = byte(base.id)
-	copy(buf[4:], body)
-	return buf
-}
-
-/*func Decode(buf []byte) Message {
-	head := make([]byte, 5)
-	body := message.Encode()
-	binary.BigEndian.PutUint32(head, uint32(len(head)+len(body)))
-	head[4] = byte(message.ID())
-	return append(head, body...)
-}
-
-func (msg *Message) ToBytes() []byte {
-	buf := make([]byte, 5)
-	binary.BigEndian.PutUint32(buf, msg.Length)
-	buf[4] = byte(msg.ID)
-	if msg.Payload != nil {
-		return append(buf, msg.Payload.Encode()...)
-	} else {
-		return buf
-	}
-}
-
-func (msg *Message) FormBytes(buf []byte) {
-	msg.Length = binary.BigEndian.Uint32(buf)
-	msg.ID = ID(buf[4])
-	if msg.Payload != nil {
-		msg.Payload.Decode(buf[4:])
-	}
-}*/
-
-/*func NewMessage(id MessageID, Payload []byte) *Message {
-	message := &Message{ID: id, Payload: Payload}
-	if id == Keepalive {
-		message.Length = 0
-	} else {
-		message.Length = uint32(len(Payload) + 1)
-	}
-	return message
-}
-
-func (msg *Message) Encode() []byte {
-	if msg.ID == Keepalive {
-		return make([]byte, 4)
-	} else {
-		buf := make([]byte, 5+len(msg.Payload))
-		binary.BigEndian.PutUint32(buf, msg.Length)
-		buf[4] = byte(msg.ID)
-		copy(buf[5:], msg.Payload[:])
-		return buf
-	}
-}
-
-func (msg *Message) Decode(buf []byte) {
-	msg.Length = binary.BigEndian.Uint32(buf)
-	if msg.Length == 0 {
-		msg.ID = -1
-	} else {
-		msg.ID = MessageID(buf[4])
-		if msg.Length > 4 {
-			msg.Payload = buf[5:]
-		}
-	}
-}*/
-
-// Message protocol
-// Length prefix| message ID | Payload
-// 4-byte       | 1-byte     | remaining bytes
-// 100          | 5          | 99-bytes
-// https://wiki.theory.org/index.php/BitTorrentSpecification#Messages
-func SplitMessage(data []byte, atEOF bool) (advance int, token []byte, err error) {
-	if !atEOF && len(data) > 4 {
-		length := int(binary.BigEndian.Uint32(data))
-		if len(data)-4 >= length {
-			return length + 4, data[:length+4], nil
-		}
-	}
-	return
-}

protocol/bt/peer/message/msg_bitfield.go

@@ -1,68 +0,0 @@
-package message
-
-import (
-	"github.com/RoaringBitmap/roaring"
-	"math"
-)
-
-// bitfield: <len=0001+X><id=5><bitfield>
-type Bitfield struct {
-	*base
-	pieceCount int
-	bitmap     *roaring.Bitmap
-}
-
-func NewBitfield() *Bitfield {
-	return &Bitfield{
-		base: &base{
-			id: IdBitfield,
-		},
-	}
-}
-
-func BuildBitfield(pieceCount int, bitmap *roaring.Bitmap) *Bitfield {
-	bitfield := NewBitfield()
-	bitfield.pieceCount = pieceCount
-	bitfield.bitmap = bitmap
-	return bitfield
-}
-
-func (b *Bitfield) Encode() []byte {
-	buf := make([]byte, int(math.Ceil(float64(b.pieceCount)/8)))
-	for i := 0; i < len(buf); i++ {
-		temp := byte(0)
-		for j := 0; j < 8; j++ {
-			// 如果piece存在,位数标识为1
-			if b.bitmap.ContainsInt(i*8 + j) {
-				temp = temp | (1 << (7 - j))
-			}
-		}
-		buf[i] = temp
-	}
-	return encode(b.base, buf)
-}
-
-func (b *Bitfield) Decode(body []byte) {
-	b.bitmap = roaring.New()
-	// 初始化bitmap
-	for i := 0; i < len(body); i++ {
-		for j := 0; j < 8; j++ {
-			if body[i]&(1<<(7-j)) > 0 {
-				b.bitmap.AddInt(i*8 + j)
-			}
-		}
-	}
-}
-
-// 某个分片是否下载完成
-func (b *Bitfield) IsComplete(i int) bool {
-	return b.bitmap.ContainsInt(i)
-}
-
-// 给定一组分片下载状态，计算出当前peer能提供下载的分片下标，如果已经拥有则不用提供
-// has = 0b01111111,had = 0b10010000
-// has & ~had = 0b01111111 & 0b01101111 = 0b01101111
-func (b *Bitfield) Provide(had *roaring.Bitmap) []uint32 {
-	xor := roaring.AndNot(b.bitmap, had)
-	return xor.ToArray()
-}

protocol/bt/peer/message/msg_bitfield_test.go

@@ -1,111 +0,0 @@
-package message
-
-import (
-	"github.com/RoaringBitmap/roaring"
-	"reflect"
-	"testing"
-)
-
-func TestBitfield_IsComplete(t *testing.T) {
-	type fields struct {
-		payload *roaring.Bitmap
-	}
-	type args struct {
-		i int
-	}
-	tests := []struct {
-		name   string
-		fields fields
-		args   args
-		want   bool
-	}{
-		{
-			"case-1",
-			fields{
-				payload: roaring.BitmapOf(1, 2, 3, 4),
-			},
-			args{
-				1,
-			},
-			true,
-		},
-		{
-			"case-2",
-			fields{
-				payload: roaring.BitmapOf(1, 2, 3, 4),
-			},
-			args{
-				5,
-			},
-			false,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			b := &Bitfield{
-				pieceCount: 100,
-				bitmap:     tt.fields.payload,
-			}
-			if got := b.IsComplete(tt.args.i); got != tt.want {
-				t.Errorf("Bitfield.IsComplete() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func TestBitfield_Provide(t *testing.T) {
-	type fields struct {
-		payload *roaring.Bitmap
-	}
-	type args struct {
-		had *roaring.Bitmap
-	}
-	tests := []struct {
-		name   string
-		fields fields
-		args   args
-		want   []uint32
-	}{
-		{
-			"case-1",
-			fields{
-				payload: roaring.BitmapOf(0, 1, 2, 3, 4),
-			},
-			args{
-				roaring.BitmapOf(0),
-			},
-			[]uint32{1, 2, 3, 4},
-		},
-		{
-			"case-2",
-			fields{
-				payload: roaring.BitmapOf(0, 1, 2, 3, 4, 5, 6, 7, 8),
-			},
-			args{
-				roaring.BitmapOf(0, 1, 3, 5, 6, 8),
-			},
-			[]uint32{2, 4, 7},
-		},
-		{
-			"case-3",
-			fields{
-				payload: roaring.BitmapOf(),
-			},
-			args{
-				roaring.BitmapOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9),
-			},
-			[]uint32{},
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			b := &Bitfield{
-				pieceCount: 100,
-				bitmap:     tt.fields.payload,
-			}
-			if got := b.Provide(tt.args.had); !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("Bitfield.Provide() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}

protocol/bt/peer/message/msg_choke.go

@@ -1,14 +0,0 @@
-package message
-
-// choke: <len=0001><id=0>
-type Choke struct {
-	*base
-}
-
-func NewChoke() *Choke {
-	return &Choke{
-		base: &base{
-			id: IdChoke,
-		},
-	}
-}

protocol/bt/peer/message/msg_interested.go

@@ -1,14 +0,0 @@
-package message
-
-// choke: <len=0001><id=2>
-type Interested struct {
-	*base
-}
-
-func NewInterested() *Interested {
-	return &Interested{
-		base: &base{
-			id: IdInterested,
-		},
-	}
-}

protocol/bt/peer/message/msg_keepalive.go

@@ -1,16 +0,0 @@
-package message
-
-// 	keep-alive: <len=0000>
-type Keepalive struct {
-	*base
-}
-
-var data = make([]byte, 4)
-
-func (k *Keepalive) Encode() []byte {
-	return data
-}
-
-func (k *Keepalive) Decode(body []byte) {
-
-}

protocol/bt/peer/message/msg_not_interested.go

@@ -1,14 +0,0 @@
-package message
-
-// choke: <len=0001><id=3>
-type NotInterested struct {
-	*base
-}
-
-func NewNotInterested() *NotInterested {
-	return &NotInterested{
-		base: &base{
-			id: IdNotInterested,
-		},
-	}
-}

protocol/bt/peer/message/msg_piece.go

@@ -1,42 +0,0 @@
-package message
-
-import "encoding/binary"
-
-// piece: <len=0009+X><id=7><index><begin><block>
-type Piece struct {
-	*base
-	Index uint32
-	Begin uint32
-	Block []byte
-}
-
-func NewPiece() *Piece {
-	return &Piece{
-		base: &base{
-			id: IdPiece,
-		},
-	}
-}
-
-func BuildPiece(index uint32, begin uint32, block []byte) *Piece {
-	piece := NewPiece()
-	piece.Index = index
-	piece.Begin = begin
-	piece.Block = block
-	return piece
-
-}
-
-func (p *Piece) Encode() []byte {
-	buf := make([]byte, 8+len(p.Block))
-	binary.BigEndian.PutUint32(buf[0:4], p.Index)
-	binary.BigEndian.PutUint32(buf[4:8], p.Begin)
-	copy(buf[8:], p.Block)
-	return encode(p.base, buf)
-}
-
-func (p *Piece) Decode(buf []byte) {
-	p.Index = binary.BigEndian.Uint32(buf[0:4])
-	p.Begin = binary.BigEndian.Uint32(buf[4:8])
-	p.Block = buf[8:]
-}

protocol/bt/peer/message/msg_request.go

@@ -1,43 +0,0 @@
-package message
-
-import (
-	"encoding/binary"
-)
-
-// request: <len=0013><id=6><index><begin><length>
-type Request struct {
-	*base
-	Index  uint32
-	Begin  uint32
-	Length uint32
-}
-
-func NewRequest() *Request {
-	return &Request{
-		base: &base{
-			id: IdRequest,
-		},
-	}
-}
-
-func BuildRequest(index uint32, begin uint32, length uint32) *Request {
-	request := NewRequest()
-	request.Index = index
-	request.Begin = begin
-	request.Length = length
-	return request
-}
-
-func (r *Request) Encode() []byte {
-	buf := make([]byte, 12)
-	binary.BigEndian.PutUint32(buf[0:4], r.Index)
-	binary.BigEndian.PutUint32(buf[4:8], r.Begin)
-	binary.BigEndian.PutUint32(buf[8:12], r.Length)
-	return encode(r.base, buf)
-}
-
-func (r *Request) Decode(buf []byte) {
-	r.Length = binary.BigEndian.Uint32(buf[0:4])
-	r.Begin = binary.BigEndian.Uint32(buf[4:8])
-	r.Index = binary.BigEndian.Uint32(buf[8:12])
-}

protocol/bt/peer/message/msg_unchoke.go

@@ -1,14 +0,0 @@
-package message
-
-// 	unchoke: <len=0001><id=1>
-type Unchoke struct {
-	*base
-}
-
-func NewUnchoke() *Unchoke {
-	return &Unchoke{
-		base: &base{
-			id: IdUnchoke,
-		},
-	}
-}

protocol/bt/peer/peer.go

@@ -1,30 +0,0 @@
-package peer
-
-import (
-	"encoding/binary"
-	"math/rand"
-	"net"
-	"strconv"
-)
-
-type Peer struct {
-	IP   uint32
-	Port uint16
-}
-
-func (peer *Peer) Address() string {
-	bts := make([]byte, 4)
-	binary.BigEndian.PutUint32(bts, peer.IP)
-	return net.IP(bts).String() + ":" + strconv.Itoa(int(peer.Port))
-}
-
-// 生成Peer ID，规则为前三位固定字母(-GP)+SemVer(xyz)+End(-),后面随机生成
-// 参考：https://wiki.theory.org/index.php/BitTorrentSpecification#peer_id
-func GenPeerID() [20]byte {
-	peerID := [20]byte{'-', 'G', 'P', '0', '0', '1', '-'}
-	_, err := rand.Read(peerID[7:])
-	if err != nil {
-		panic(err)
-	}
-	return peerID
-}