Merge pull request #113 from Faless/spike/4.1

Support building for Godot 4.1 (new default).

.clang-format

@@ -0,0 +1,199 @@
+# Commented out parameters are those with the same value as base LLVM style.
+# We can uncomment them if we want to change their value, or enforce the
+# chosen value in case the base style changes (last sync: Clang 14.0).
+---
+### General config, applies to all languages ###
+BasedOnStyle:  LLVM
+AccessModifierOffset: -4
+AlignAfterOpenBracket: DontAlign
+# AlignArrayOfStructures: None
+# AlignConsecutiveMacros: None
+# AlignConsecutiveAssignments: None
+# AlignConsecutiveBitFields: None
+# AlignConsecutiveDeclarations: None
+# AlignEscapedNewlines: Right
+AlignOperands:   DontAlign
+AlignTrailingComments: false
+# AllowAllArgumentsOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: false
+# AllowShortEnumsOnASingleLine: true
+# AllowShortBlocksOnASingleLine: Never
+# AllowShortCaseLabelsOnASingleLine: false
+# AllowShortFunctionsOnASingleLine: All
+# AllowShortLambdasOnASingleLine: All
+# AllowShortIfStatementsOnASingleLine: Never
+# AllowShortLoopsOnASingleLine: false
+# AlwaysBreakAfterDefinitionReturnType: None
+# AlwaysBreakAfterReturnType: None
+# AlwaysBreakBeforeMultilineStrings: false
+# AlwaysBreakTemplateDeclarations: MultiLine
+# AttributeMacros:
+#   - __capability
+# BinPackArguments: true
+# BinPackParameters: true
+# BraceWrapping:
+#   AfterCaseLabel:  false
+#   AfterClass:      false
+#   AfterControlStatement: Never
+#   AfterEnum:       false
+#   AfterFunction:   false
+#   AfterNamespace:  false
+#   AfterObjCDeclaration: false
+#   AfterStruct:     false
+#   AfterUnion:      false
+#   AfterExternBlock: false
+#   BeforeCatch:     false
+#   BeforeElse:      false
+#   BeforeLambdaBody: false
+#   BeforeWhile:     false
+#   IndentBraces:    false
+#   SplitEmptyFunction: true
+#   SplitEmptyRecord: true
+#   SplitEmptyNamespace: true
+# BreakBeforeBinaryOperators: None
+# BreakBeforeConceptDeclarations: true
+# BreakBeforeBraces: Attach
+# BreakBeforeInheritanceComma: false
+# BreakInheritanceList: BeforeColon
+# BreakBeforeTernaryOperators: true
+# BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: AfterColon
+# BreakStringLiterals: true
+ColumnLimit:     0
+# CommentPragmas:  '^ IWYU pragma:'
+# QualifierAlignment: Leave
+# CompactNamespaces: false
+ConstructorInitializerIndentWidth: 8
+ContinuationIndentWidth: 8
+Cpp11BracedListStyle: false
+# DeriveLineEnding: true
+# DerivePointerAlignment: false
+# DisableFormat:   false
+# EmptyLineAfterAccessModifier: Never
+# EmptyLineBeforeAccessModifier: LogicalBlock
+# ExperimentalAutoDetectBinPacking: false
+# PackConstructorInitializers: BinPack
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+# AllowAllConstructorInitializersOnNextLine: true
+# FixNamespaceComments: true
+# ForEachMacros:
+#   - foreach
+#   - Q_FOREACH
+#   - BOOST_FOREACH
+# IfMacros:
+#   - KJ_IF_MAYBE
+# IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '".*"'
+    Priority:        1
+  - Regex:           '^<.*\.h>'
+    Priority:        2
+  - Regex:           '^<.*'
+    Priority:        3
+# IncludeIsMainRegex: '(Test)?$'
+# IncludeIsMainSourceRegex: ''
+# IndentAccessModifiers: false
+IndentCaseLabels: true
+# IndentCaseBlocks: false
+# IndentGotoLabels: true
+# IndentPPDirectives: None
+# IndentExternBlock: AfterExternBlock
+# IndentRequires:  false
+IndentWidth:     4
+# IndentWrappedFunctionNames: false
+# InsertTrailingCommas: None
+# JavaScriptQuotes: Leave
+# JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+# LambdaBodyIndentation: Signature
+# MacroBlockBegin: ''
+# MacroBlockEnd:   ''
+# MaxEmptyLinesToKeep: 1
+# NamespaceIndentation: None
+# PenaltyBreakAssignment: 2
+# PenaltyBreakBeforeFirstCallParameter: 19
+# PenaltyBreakComment: 300
+# PenaltyBreakFirstLessLess: 120
+# PenaltyBreakOpenParenthesis: 0
+# PenaltyBreakString: 1000
+# PenaltyBreakTemplateDeclaration: 10
+# PenaltyExcessCharacter: 1000000
+# PenaltyReturnTypeOnItsOwnLine: 60
+# PenaltyIndentedWhitespace: 0
+# PointerAlignment: Right
+# PPIndentWidth:   -1
+# ReferenceAlignment: Pointer
+# ReflowComments:  true
+# RemoveBracesLLVM: false
+# SeparateDefinitionBlocks: Leave
+# ShortNamespaceLines: 1
+# SortIncludes:    CaseSensitive
+# SortJavaStaticImport: Before
+# SortUsingDeclarations: true
+# SpaceAfterCStyleCast: false
+# SpaceAfterLogicalNot: false
+# SpaceAfterTemplateKeyword: true
+# SpaceBeforeAssignmentOperators: true
+# SpaceBeforeCaseColon: false
+# SpaceBeforeCpp11BracedList: false
+# SpaceBeforeCtorInitializerColon: true
+# SpaceBeforeInheritanceColon: true
+# SpaceBeforeParens: ControlStatements
+# SpaceBeforeParensOptions:
+#   AfterControlStatements: true
+#   AfterForeachMacros: true
+#   AfterFunctionDefinitionName: false
+#   AfterFunctionDeclarationName: false
+#   AfterIfMacros:   true
+#   AfterOverloadedOperator: false
+#   BeforeNonEmptyParentheses: false
+# SpaceAroundPointerQualifiers: Default
+# SpaceBeforeRangeBasedForLoopColon: true
+# SpaceInEmptyBlock: false
+# SpaceInEmptyParentheses: false
+# SpacesBeforeTrailingComments: 1
+# SpacesInAngles:  Never
+# SpacesInConditionalStatement: false
+# SpacesInContainerLiterals: true
+# SpacesInCStyleCastParentheses: false
+## Godot TODO: We'll want to use a min of 1, but we need to see how to fix
+## our comment capitalization at the same time.
+SpacesInLineCommentPrefix:
+  Minimum:         0
+  Maximum:         -1
+# SpacesInParentheses: false
+# SpacesInSquareBrackets: false
+# SpaceBeforeSquareBrackets: false
+# BitFieldColonSpacing: Both
+# StatementAttributeLikeMacros:
+#   - Q_EMIT
+# StatementMacros:
+#   - Q_UNUSED
+#   - QT_REQUIRE_VERSION
+TabWidth:        4
+# UseCRLF:         false
+UseTab:          Always
+# WhitespaceSensitiveMacros:
+#   - STRINGIZE
+#   - PP_STRINGIZE
+#   - BOOST_PP_STRINGIZE
+#   - NS_SWIFT_NAME
+#   - CF_SWIFT_NAME
+---
+### C++ specific config ###
+Language:        Cpp
+Standard:        c++17
+---
+### ObjC specific config ###
+Language:        ObjC
+# ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 4
+# ObjCBreakBeforeNestedBlockParam: true
+# ObjCSpaceAfterProperty: false
+# ObjCSpaceBeforeProtocolList: true
+---
+### Java specific config ###
+Language:        Java
+# BreakAfterJavaFieldAnnotations: false
+JavaImportGroups: ['org.godotengine', 'android', 'androidx', 'com.android', 'com.google', 'java', 'javax']
+...

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,64 @@
+name: Bug report
+description: Report a bug in the WebRTC native plugin.
+body:
+
+- type: markdown
+  attributes:
+    value: |
+      - Write a descriptive issue title above.
+      - Search [open](https://github.com/godotengine/webrtc-native/issues) and [closed](https://github.com/godotengine/webrtc-native/issues?q=is%3Aissue+is%3Aclosed) issues to ensure it has not already been reported.
+      - Verify that you are using a [supported Godot version](https://docs.godotengine.org/en/stable/about/release_policy.html).
+
+- type: input
+  attributes:
+    label: Godot version
+    description: >
+      Specify the Git commit hash if using a development or non-official build.
+      If you use a custom build, please test if your issue is reproducible in official builds too.
+    placeholder: 3.3.stable, 4.0.dev (3041becc6)
+  validations:
+    required: true
+
+- type: input
+  attributes:
+    label: Plugin version
+    description: >
+      Specify the Git commit hash if using a development or non-official build.
+      If you use a custom build, please test if your issue is reproducible in official builds too.
+    placeholder: 0.3, 0.5, 0.6.dev (072ba5c)
+  validations:
+    required: true
+
+- type: input
+  attributes:
+    label: System information
+    description: |
+      Specify the OS version, and when relevant hardware information.
+    placeholder: Android 10, Fairphone 3+.
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: Issue description
+    description: |
+      Describe your issue briefly. What doesn't work, and how do you expect it to work instead?
+      You can include images or videos with drag and drop, and format code blocks or logs with <code>```</code> tags.
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: Steps to reproduce
+    description: |
+      List of steps or sample code that reproduces the issue. Having reproducible issues is a prerequisite for contributors to be able to solve them.
+      If you include a minimal reproduction project below, you can detail how to use it here.
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: Minimal reproduction project
+    description: |
+      A small Godot project which reproduces the issue. Highly recommended to speed up troubleshooting.
+      Drag and drop a ZIP archive to upload it.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,6 @@
+blank_issues_enabled: false
+
+contact_links:
+  - name: Godot proposals
+    url: https://github.com/godotengine/godot-proposals
+    about: Please submit feature proposals about the WebRTC exposed API on the Godot proposals repository, not here.

.github/actions/webrtc-download/action.yml

@@ -1,51 +0,0 @@
-name: 'Get WebRTC Library'
-description: 'Get pre-build statically linked WebRTC library from Faless/webrtc-builds'
-inputs:
-  repo:
-    description: 'Base repository'
-    required: true
-    default: "godotengine/webrtc-actions"
-  release:
-    description: 'Release tag'
-    required: true
-    default: '4472-33644-92ba70c'
-  webrtc-base-name:
-    description: 'The WebRTC version'
-    required: true
-    default: "webrtc-33644-92ba70c"
-  out-dir:
-    description: 'Directory where to extract the library'
-    required: true
-    default: "webrtc"
-  platform:
-    description: 'Platform to download'
-    required: true
-  archs:
-    description: 'Space separated list of architecture to fetch'
-    required: true
-runs:
-  using: "composite"
-  steps:
-    - shell: bash
-      env:
-        RTC_BASE_URL: https://github.com/${{ inputs.repo }}/releases/download/${{ inputs.release }}/${{ inputs.webrtc-base-name }}
-      run: |
-        cd ${{ inputs.out-dir }}
-
-        libplat=${{ inputs.platform }}
-        if [ "${{ inputs.platform }}" = "windows" ]; then
-          libplat=win
-        elif [ "${{ inputs.platform }}" = "osx" ]; then
-          libplat=mac
-        fi
-
-        for arch in ${{ inputs.archs }}
-        do
-          echo "Downloading ${{ env.RTC_BASE_URL }}-${{ inputs.platform }}-${arch}.tar.gz"
-          curl -L ${{ env.RTC_BASE_URL }}-${libplat}-${arch}.tar.gz -o ${arch}.tar.gz
-          tar -xzf ${arch}.tar.gz
-        done
-
-        mv lib ${{ inputs.platform }}
-        ls -l
-        ls -l *

.github/workflows/build_release.yml

@@ -1,116 +1,170 @@
 name: 🔧 Build -> Package 📦
 on: [push, pull_request]
 
+env:
+  # Only used for the cache key. Increment version to force clean build.
+  GODOT_BASE_BRANCH: master
+
 jobs:
+  static-checks:
+    name: 📊 Static Checks (clang-format, black format, file format)
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: |
+          # Add clang repository (so we have clang-format-14)
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+          sudo apt-add-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main"
+          sudo apt-get update
+          # Install required deps
+          sudo apt-get install -qq dos2unix moreutils recode clang-format-14
+          sudo update-alternatives --remove-all clang-format
+          sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-14 100
+          sudo pip3 install black==22.3.0 pygments
+
+      - name: File formatting checks (file_format.sh)
+        run: |
+          bash ./misc/scripts/file_format.sh
+
+      - name: Style checks via clang-format (clang_format.sh)
+        run: |
+          bash ./misc/scripts/clang_format.sh
+
+      - name: Python style checks via black (black_format.sh)
+        run: |
+          bash ./misc/scripts/black_format.sh
+
   build:
     runs-on: ${{ matrix.os }}
     name: 🔧 Build
+    needs: static-checks
     strategy:
+      fail-fast: false
       matrix:
         include:
           # Android
           - platform: android
-            arch: 'x86'
-            sconsflags: 'android_arch=x86'
-            os: 'ubuntu-20.04'
-          - platform: android
-            arch: 'x64'
-            sconsflags: 'android_arch=x86_64'
-            os: 'ubuntu-20.04'
-          - platform: android
-            arch: 'arm'
-            sconsflags: 'android_arch=armv7'
+            arch: 'x86_64'
+            gdnative_flags: 'android_arch=x86_64'
+            sconsflags: ''
             os: 'ubuntu-20.04'
+            cache-name: android-x86_64
           - platform: android
             arch: 'arm64'
-            sconsflags: 'android_arch=arm64v8'
+            gdnative_flags: 'android_arch=arm64v8'
+            sconsflags: ''
             os: 'ubuntu-20.04'
+            cache-name: android-arm64
 
           # iOS
           - platform: ios
-            arch: 'x64'
-            sconsflags: 'ios_arch=x86_64 ios_simulator=true'
-            os: 'macos-latest'
-          - platform: ios
-            arch: 'arm'
-            sconsflags: 'ios_arch=armv7'
-            os: 'macos-latest'
+            arch: 'x86_64'
+            gdnative_flags: 'ios_arch=x86_64'
+            sconsflags: 'ios_simulator=true'
+            os: 'macos-11'
+            cache-name: ios-x86_64-simulator
           - platform: ios
             arch: 'arm64'
-            sconsflags: 'ios_arch=arm64'
-            os: 'macos-latest'
+            gdnative_flags: 'ios_arch=arm64'
+            sconsflags: ''
+            os: 'macos-11'
+            cache-name: ios-arm64
 
           # Linux
           - platform: linux
-            arch: 'x86'
-            sconsflags: 'bits=32'
+            arch: 'x86_32'
+            buildroot: 'i686'
+            gdnative_flags: 'bits=32'
+            sconsflags: ''
             os: 'ubuntu-20.04'
+            cache-name: linux-x86_32
           - platform: linux
-            arch: 'x64'
-            sconsflags: 'bits=64'
+            arch: 'x86_64'
+            buildroot: 'x86_64'
+            gdnative_flags: 'bits=64'
+            sconsflags: ''
             os: 'ubuntu-20.04'
+            cache-name: linux-x86_64
 
           # macOS
-          - platform: osx
-            arch: 'x64'
-            sconsflags: 'bits=64'
-            os: 'macos-latest'
+          - platform: macos
+            arch: 'universal'
+            gdnative_flags: 'macos_arch=universal bits=64'
+            sconsflags: ''
+            os: 'macos-11'
+            cache-name: macos-universal
 
           # Windows
           - platform: windows
-            arch: 'x86'
-            sconsflags: 'bits=32'
-            os: 'windows-latest'
+            arch: 'x86_32'
+            gdnative_flags: 'bits=32'
+            sconsflags: 'use_mingw=yes'
+            os: 'ubuntu-20.04'
             msvc_arch: amd64_x86
+            cache-name: win-x86_32
           - platform: windows
-            arch: 'x64'
-            sconsflags: 'bits=64'
-            os: 'windows-latest'
+            arch: 'x86_64'
+            gdnative_flags: 'bits=64'
+            sconsflags: 'use_mingw=yes'
+            os: 'ubuntu-20.04'
             msvc_arch: amd64
+            cache-name: win-x86_64
 
     env:
-      SCONSFLAGS: ${{ matrix.sconsflags }} platform=${{ matrix.platform }} --jobs=2
-      NDK_VERSION: 22b
-      ANDROID_NDK_ROOT: ${{github.workspace}}/android-ndk-r22b
-      MSVC_VARS: 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat'
+      SCONS_CACHE: ${{ github.workspace }}/.scons-cache/
+      SCONSFLAGS: ${{ matrix.sconsflags }} platform=${{ matrix.platform }} arch=${{ matrix.arch }} --jobs=2
 
     defaults:
       run:
         shell: bash
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: recursive
 
-      - name: Cache NDK
-        id: cache-ndk
-        if: ${{ matrix.platform == 'android' }}
-        uses: actions/cache@v2
+      - name: Setup Godot build cache
+        uses: ./godot-cpp/.github/actions/godot-cache
         with:
-          path: ${{ env.ANDROID_NDK_ROOT }}
-          key: ndk-${{ env.NDK_VERSION }}
+          cache-name: ${{ matrix.cache-name }}
+        continue-on-error: true
 
-      - name: Download NDK
-        if: ${{ matrix.platform == 'android' && steps.cache-ndk.outputs.cache-hit != 'true' }}
-        id: setup-ndk
-        run: |
-          cd ${{ github.workspace }}
-          curl -L https://dl.google.com/android/repository/android-ndk-r${{ env.NDK_VERSION }}-linux-x86_64.zip -o ndk.zip
-          unzip ndk.zip
-          ls
-
-      - name: Setup MSVC build environment for ${{ matrix.msvc_arch }}
+      - name: Install Windows build dependencies
         if: ${{ matrix.platform == 'windows' }}
-        run: "'${{ env.MSVC_VARS }}' ${{ matrix.msvc_arch }}"
+        run: |
+          sudo apt-get update
+          sudo apt-get install build-essential mingw-w64
+          sudo update-alternatives --set i686-w64-mingw32-gcc /usr/bin/i686-w64-mingw32-gcc-posix
+          sudo update-alternatives --set i686-w64-mingw32-g++ /usr/bin/i686-w64-mingw32-g++-posix
+          sudo update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix
+          sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
+          dpkg -l | grep ii | grep mingw
+          update-alternatives --get-selections | grep mingw
+
+      - name: Setup Linux buildroot toolchain cache
+        if: ${{ matrix.platform == 'linux' }}
+        uses: actions/cache@v3
+        with:
+          path: |
+            ${{ matrix.buildroot }}-godot-linux-gnu_sdk-buildroot.tar.bz2
+          key: linux-${{ matrix.buildroot }}-buildroot
 
       - name: Install Linux build dependencies
         if: ${{ matrix.platform == 'linux' }}
         run: |
-          sudo apt-get install build-essential gcc-multilib wget g++-multilib
+          sudo apt-get install build-essential gcc-multilib g++-multilib wget
+          if [ ! -f ${{ matrix.buildroot }}-godot-linux-gnu_sdk-buildroot.tar.bz2 ]; then
+            wget https://downloads.tuxfamily.org/godotengine/toolchains/linux/${{ matrix.buildroot }}-godot-linux-gnu_sdk-buildroot.tar.bz2
+          fi
+          tar -xjf ${{ matrix.buildroot }}-godot-linux-gnu_sdk-buildroot.tar.bz2
+          echo "$GITHUB_WORKSPACE/${{ matrix.buildroot }}-godot-linux-gnu_sdk-buildroot/bin" >> $GITHUB_PATH
+          patch -p1 < misc/patches/scons_path.diff
 
       - name: Set up Python 3.x
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: '3.x'
           architecture: 'x64'
@@ -121,60 +175,82 @@ jobs:
           python -m pip install scons
           python --version
           scons --version
+          cmake --version
 
-      - name: Get WebRTC package for ${{ matrix.platform }} - ${{ matrix.arch }}
-        uses: ./.github/actions/webrtc-download
-        with:
-          platform: ${{ matrix.platform }}
-          archs: ${{ matrix.arch }}
-
-      - name: Compilation ${{ matrix.platform }} - ${{ matrix.arch }} - godot-cpp
+      - name: Compile Extension (4.1+) - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons -C godot-cpp target=debug generate_bindings=yes
-          scons -C godot-cpp target=release
+          scons target=template_debug godot_version=4.1
 
-      - name: Compilation ${{ matrix.platform }} - ${{ matrix.arch }} - webrtc-native
+      - name: Compile Extension (4.1+) - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=debug
-          scons target=release
+          scons target=template_release godot_version=4.1
 
-      - uses: actions/upload-artifact@v2
+      - name: Compile Extension (4.0) - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
+        run: |
+          scons target=template_debug godot_version=4.0
+
+      - name: Compile Extension (4.0) - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
+        run: |
+          scons target=template_release godot_version=4.0
+
+      - name: Compile GDNative (3.5+) - release ${{ matrix.platform }} - ${{ matrix.arch }}
+        run: |
+          scons target=release generate_bindings=yes ${{ matrix.gdnative_flags }} godot_version=3
+
+      - uses: actions/upload-artifact@v3
         with:
           name: ${{ github.job }}-${{ matrix.platform }}-${{ matrix.arch }}
-          path: bin/*
+          path: |
+            bin/
+            !bin/thirdparty/
 
   package:
     name: 📦 Package
     needs: build
     runs-on: "ubuntu-latest"
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           path: artifacts
 
+      - name: Bundle licenses.
+        run: |
+          cp LICENSE artifacts/LICENSE.webrtc-native
+          cp thirdparty/libdatachannel/LICENSE artifacts/LICENSE.libdatachannel
+          cp thirdparty/openssl/LICENSE.txt artifacts/LICENSE.openssl
+          cp thirdparty/libdatachannel/deps/libjuice/LICENSE artifacts/LICENSE.libjuice
+          cp thirdparty/libdatachannel/deps/usrsctp/LICENSE.md artifacts/LICENSE.usrsctp
+          cp thirdparty/libdatachannel/deps/libsrtp/LICENSE artifacts/LICENSE.libsrtp
+          cp thirdparty/libdatachannel/deps/json/LICENSE.MIT artifacts/LICENSE.json
+          cp thirdparty/libdatachannel/deps/plog/LICENSE artifacts/LICENSE.plog
+
       - name: Package artifacts for release
+        env:
+          DESTINATION: "release"
         run: |
           mkdir release
-          cd release
-          for name in webrtc webrtc_debug
-          do
-            mkdir -p ${name}/lib/
-            find ../artifacts -wholename "*/${name}/lib/*" | xargs cp -t ${name}/lib/
-            find ../artifacts -wholename "*/${name}/${name}.tres" | head -n 1 | xargs cp -t ${name}/
-          done
 
-          zip -r godot-webrtc-native-release.zip webrtc
-          zip -r godot-webrtc-native-debug.zip webrtc_debug
-          ls -R
+          VERSION="extension-4.1" TYPE="webrtc" ./misc/scripts/package_release.sh
+          VERSION="extension-4.0" TYPE="webrtc" ./misc/scripts/package_release.sh
+          VERSION="gdnative" TYPE="webrtc" ./misc/scripts/package_release.sh
 
-      - uses: actions/upload-artifact@v2
+          ls -R release
+
+      - uses: actions/upload-artifact@v3
         with:
-          name: godot-webrtc-native-debug.zip
-          path: release/godot-webrtc-native-debug.zip
+          name: godot-webrtc-extension-4.1
+          path: release/*-extension-4.1-*.zip
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
-          name: godot-webrtc-native-release.zip
-          path: release/godot-webrtc-native-release.zip
+          name: godot-webrtc-extension-4.0
+          path: release/*-extension-4.0-*.zip
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: godot-webrtc-gdnative
+          path: release/*-gdnative-*.zip

.gitignore

@@ -5,3 +5,5 @@ bin/*
 .sconsign.dblite
 *.obj
 *.swp
+__pycache__/*
+*.pyc

.gitmodules

@@ -1,3 +1,15 @@
 [submodule "godot-cpp"]
 	path = godot-cpp
-	url = https://github.com/GodotNativeTools/godot-cpp
+	url = https://github.com/godotengine/godot-cpp.git
+[submodule "godot-cpp-4.0"]
+	path = godot-cpp-4.0
+	url = https://github.com/godotengine/godot-cpp.git
+[submodule "godot-cpp-3.x"]
+	path = godot-cpp-3.x
+	url = https://github.com/godotengine/godot-cpp.git
+[submodule "libdatachannel"]
+	path = thirdparty/libdatachannel
+	url = https://github.com/paullouisageneau/libdatachannel.git
+[submodule "openssl"]
+	path = thirdparty/openssl
+	url = https://github.com/openssl/openssl.git

README.md

@@ -7,65 +7,48 @@
 
 ### Compiling
 
-Clone this repository with the following command to checkout both [godot-cpp](https://github.com/godotengine/godot-cpp) and [godot-headers](https://github.com/godotengine/godot-headers) dependencies.
+Clone this repository with the following command to checkout all the dependencies: [godot-cpp](https://github.com/godotengine/godot-cpp), [openssl](https://www.openssl.org/) and [libdatachannel](https://github.com/paullouisageneau/libdatachannel) (and sub-dependencies).
 
 ```
 $ git clone --recurse-submodules https://github.com/godotengine/webrtc-native.git
 ```
 
-Note that if you wish to use a specific branch, add the -b option to the clone command:
-```
-$ git clone --recurse-submodules -b 3.2 https://github.com/godotengine/webrtc-native.git
-```
-
 If you already checked out the branch use the following commands to update the dependencies:
 
 ```
 $ git submodule update --init --recursive
 ```
 
-Right now our directory structure should look like this:
-```
-webrtc-native/
-├─bin/
-├─godot-cpp/
-| └─godot-headers/
-├─src/
-└─webrtc/
-```
+### Compiling the extension.
 
-### Compiling the cpp bindings library
-First, we need to compile our cpp bindings library:
-```
-$ cd godot-cpp
-$ scons platform=<your platform> generate_bindings=yes
-$ cd ..
-```
-
-> Replace `<your platform>` with either `windows`, `linux` or `osx`.
-
-> Include `use_llvm=yes` for using clang++
-
-> Include `target=runtime` to build a runtime build (windows only at the moment)
-
-> Include `target=release` or `target=debug` for release or debug build.
-
-> The resulting library will be created in `godot-cpp/bin/`, take note of its name as it will be different depending on platform.
-
-### Building WebRTC
-
-Building WebRTC is quite a complex task, involves huge downloads and long build times, and produces multiple output libraries that needs to bundled together.
-
-To make things easier, a set of [GitHub Actions](https://docs.github.com/en/actions) are used to generate the library for this plugin, [available in this repository](https://github.com/godotengine/webrtc-actions).
-
-Alternatively, [**download the latest pre-compiled libraries**](https://github.com/godotengine/webrtc-actions/releases).
-
-Extract content of `include` into `webrtc/include` and content of `bin` into `webrtc/<your platform>`
-
-### Compiling the plugin.
+To build the GDExtension version of the plugin (Godot 4.1+) run the following command from the `webrtc-native` folder:
 
 ```
-$ scons platform=<your platform> target=<your target>
+$ scons platform=<your platform>
 ```
 
-The generated library and associated `tres` will be placed in `bin/webrtc/` or `bin/webrtc_debug/` according to the desired target. You simply need to copy that folder to the root folder of your project.
+This will build all the required dependencies into a single shared library.
+
+To build the "legacy" GDExtension version of the plugin (Godot 4.0) run the following command instead:
+
+```
+$ scons platform=<your platform> godot_version=4.0
+```
+
+To build the GDNative version of the plugin (Godot 3.x) run the following command instead:
+
+```
+$ scons platform=<your platform> godot_version=3
+```
+
+> Replace `<your platform>` with either `windows`, `linux`, `osx`, `android`, or `ios`.
+
+> Include `target=release` or `target=debug` for release or debug build (default is `debug`).
+
+The resulting library and associated `tres` or `gdextension` will be created in `bin/[extension|gdnative]/webrtc[_debug]` depending on the `target` and `godot_version`.
+
+You simply need to copy that folder to the root folder of your project. Note that you will have to build the library for all the desired export platforms.
+
+### License
+
+The `webrtc-native` plugin is licensed under the MIT license (see [LICENSE](https://github.com/godotengine/webrtc-native/blob/master/LICENSE)), while `libdatachannel` and its dependencies are licensed under other permissive open source licences. Please see [`thirdparty/README.md`](thirdparty/README.md) for more informations.

SConstruct

@@ -1,354 +1,202 @@
 #!python
 
 import os, sys, platform, json, subprocess
-
-if sys.version_info < (3,):
-    def decode_utf8(x):
-        return x
-else:
-    import codecs
-    def decode_utf8(x):
-        return codecs.utf_8_decode(x)[0]
+import SCons
 
 
 def add_sources(sources, dirpath, extension):
-  for f in os.listdir(dirpath):
-      if f.endswith('.' + extension):
-          sources.append(dirpath + '/' + f)
+    for f in os.listdir(dirpath):
+        if f.endswith("." + extension):
+            sources.append(dirpath + "/" + f)
 
 
-def gen_gdnative_lib(target, source, env):
-    for t in target:
-        with open(t.srcnode().path, 'w') as w:
-            w.write(decode_utf8(source[0].get_contents()).replace('{GDNATIVE_PATH}', os.path.splitext(t.name)[0]).replace('{TARGET}', env['target']))
+def replace_flags(flags, replaces):
+    for k, v in replaces.items():
+        if k in flags:
+            flags[flags.index(k)] = v
 
 
 env = Environment()
-
-target_arch = ARGUMENTS.get('b', ARGUMENTS.get('bits', '64'))
-target_platform = ARGUMENTS.get('p', ARGUMENTS.get('platform', 'linux'))
-if target_platform == 'windows':
-    # This makes sure to keep the session environment variables on windows,
-    # that way you can run scons in a vs 2017 prompt and it will find all the required tools
-    if (target_arch == '64'):
-        env = Environment(ENV = os.environ, TARGET_ARCH='amd64')
-    else:
-        env = Environment(ENV = os.environ, TARGET_ARCH='x86')
-
-env.Append(BUILDERS={'GDNativeLibBuilder': Builder(action=gen_gdnative_lib)})
-
-customs = ['custom.py']
-opts = Variables(customs, ARGUMENTS)
-
-opts.Add(BoolVariable('use_llvm', 'Use the LLVM compiler', False))
-opts.Add(EnumVariable('target', "Compilation target", 'debug', ('debug', 'release')))
-
-opts.Add(EnumVariable(
-    'android_arch',
-    'Target Android architecture',
-    'armv7',
-    ['armv7','arm64v8', 'x86', 'x86_64']
-))
-opts.Add(
-    'android_api_level',
-    'Target Android API level',
-    '18' if ARGUMENTS.get("android_arch", 'armv7') in ['armv7', 'x86'] else '21'
-)
-opts.Add(
-    'ANDROID_NDK_ROOT',
-    'Path to your Android NDK installation. By default, uses ANDROID_NDK_ROOT from your defined environment variables.',
-    os.environ.get("ANDROID_NDK_ROOT", None)
-)
-
-opts.Add(EnumVariable(
-    'ios_arch',
-    'Target iOS architecture',
-    'arm64',
-    ['armv7', 'arm64', 'x86_64']
-))
-opts.Add(BoolVariable(
-    'ios_simulator',
-    'Target iOS Simulator',
-    False
-))
-opts.Add(
-    'IPHONEPATH',
-    'Path to iPhone toolchain',
-    '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain',
-)
-
-# Update environment (parse options)
+opts = Variables(["customs.py"], ARGUMENTS)
+opts.Add(EnumVariable("godot_version", "The Godot target version", "4.1", ["3", "4.0", "4.1"]))
 opts.Update(env)
 
-target = env['target']
+# Minimum target platform versions.
+if "ios_min_version" not in ARGUMENTS:
+    ARGUMENTS["ios_min_version"] = "11.0"
+if "macos_deployment_target" not in ARGUMENTS:
+    ARGUMENTS["macos_deployment_target"] = "11.0"
+if "android_api_level" not in ARGUMENTS:
+    ARGUMENTS["android_api_level"] = "28"
 
-if target_platform == 'android':
-    target_arch = env['android_arch']
-elif target_platform == 'ios':
-    target_arch = env['ios_arch']
+if env["godot_version"] == "3":
+    if "platform" in ARGUMENTS and ARGUMENTS["platform"] == "macos":
+        ARGUMENTS["platform"] = "osx"  # compatibility with old osx name
 
-host_platform = platform.system()
-# Local dependency paths, adapt them to your setup
-godot_headers = ARGUMENTS.get('headers', 'godot-cpp/godot-headers')
-godot_cpp_headers = ARGUMENTS.get('godot_cpp_headers', 'godot-cpp/include')
-godot_cpp_lib_dir = ARGUMENTS.get('godot_cpp_lib_dir', 'godot-cpp/bin')
-result_path = os.path.join('bin', 'webrtc' if env['target'] == 'release' else 'webrtc_debug', 'lib')
-lib_prefix = ""
+    env = SConscript("godot-cpp-3.x/SConstruct")
 
-# Convenience check to enforce the use_llvm overrides when CXX is clang(++)
-if 'CXX' in env and 'clang' in os.path.basename(env['CXX']):
-        env['use_llvm'] = True
+    # Patch base env
+    replace_flags(
+        env["CCFLAGS"],
+        {
+            "-mios-simulator-version-min=10.0": "-mios-simulator-version-min=11.0",
+            "-miphoneos-version-min=10.0": "-miphoneos-version-min=11.0",
+            "/std:c++14": "/std:c++17",
+            "-std=c++14": "-std=c++17",
+        },
+    )
 
-if target_platform == 'linux':
-    env['CXX']='g++'
+    env = env.Clone()
 
-    # LLVM
-    if env['use_llvm']:
-        if ('clang++' not in os.path.basename(env['CXX'])):
-            env['CC'] = 'clang'
-            env["CXX"] = "clang++"
-            env["LINK"] = "clang++"
+    if env["target"] == "debug":
+        env.Append(CPPDEFINES=["DEBUG_ENABLED"])
 
-    if (env["target"] == "debug"):
-        env.Prepend(CCFLAGS=['-g3'])
-        env.Append(LINKFLAGS=['-rdynamic'])
-    else:
-        env.Prepend(CCFLAGS=['-O3'])
+    if env["platform"] == "windows" and env["use_mingw"]:
+        env.Append(LINKFLAGS=["-static-libgcc"])
 
-    env.Append(CCFLAGS=['-fPIC', '-std=c++14'])
+    if env["platform"] == "osx":
+        env["platform"] = "macos"  # compatibility with old osx name
+        ARGUMENTS["platform"] = "macos"
+        env["CC"] = "clang"  # CC is not set in 3.x and can result in it being "gcc".
 
-    if target_arch == '32':
-        env.Append(CCFLAGS = [ '-m32' ])
-        env.Append(LINKFLAGS = [ '-m32' ])
-    elif target_arch == '64':
-        env.Append(CCFLAGS = [ '-m64' ])
-        env.Append(LINKFLAGS = [ '-m64' ])
-        # i386 does not like static libstdc++
-        env.Append(LINKFLAGS=['-static-libgcc', '-static-libstdc++'])
+    if env["platform"] == "ios":
+        env["ios_min_version"] = "11.0"
 
-elif target_platform == 'windows':
-    if host_platform == 'Windows':
+    # Normalize suffix
+    if env["platform"] in ["windows", "linux"]:
+        env["arch"] = "x86_32" if env["bits"] == "32" else "x86_64"
+        env["arch_suffix"] = env["arch"]
+    elif env["platform"] == "macos":
+        env["arch"] = env["macos_arch"]
+        env["arch_suffix"] = env["arch"]
+    elif env["platform"] == "ios":
+        env["arch"] = "arm32" if env["ios_arch"] == "armv7" else env["ios_arch"]
+        env["arch_suffix"] = env["ios_arch"] + (".simulator" if env["ios_simulator"] else "")
+    elif env["platform"] == "android":
+        env["arch"] = {
+            "armv7": "arm32",
+            "arm64v8": "arm64",
+            "x86": "x86_32",
+            "x86_64": "x86_64",
+        }[env["android_arch"]]
+        env["arch_suffix"] = env["arch"]
 
-        lib_prefix = "lib"
-        env.Append(LINKFLAGS = [ '/WX' ])
-        if target == 'debug':
-            env.Append(CCFLAGS = ['/EHsc', '/D_DEBUG', '/MDd' ])
-        else:
-            env.Append(CCFLAGS = ['/O2', '/EHsc', '/DNDEBUG', '/MD' ])
-    else:
-        if target_arch == '32':
-            env['CXX']='i686-w64-mingw32-g++'
-        elif target_arch == '64':
-            env['CXX']='x86_64-w64-mingw32-g++'
-
-        if env['target'] == 'debug':
-            env.Append(CCFLAGS=['-Og', '-g'])
-        elif env['target'] == 'release':
-            env.Append(CCFLAGS=['-O3'])
-
-        env.Append(CCFLAGS = [ '-std=c++14', '-Wwrite-strings' ])
-        env.Append(LINKFLAGS = [ '--static', '-Wl,--no-undefined', '-static-libgcc', '-static-libstdc++' ])
-
-elif target_platform == 'osx':
-    if env['use_llvm']:
-        env['CXX'] = 'clang++'
-
-    # Only 64-bits is supported for OS X
-    target_arch = '64'
-
-    env.Append(CCFLAGS = [ '-std=c++14', '-arch', 'x86_64' ])
-    env.Append(LINKFLAGS = [ '-arch', 'x86_64', '-framework', 'Cocoa', '-Wl,-undefined,dynamic_lookup' ])
-
-    if env['target'] == 'debug':
-        env.Append(CCFLAGS=['-Og', '-g'])
-    elif env['target'] == 'release':
-        env.Append(CCFLAGS=['-O3'])
-
-elif target_platform == 'ios':
-    if env['ios_simulator']:
-        sdk_name = 'iphonesimulator'
-        env.Append(CCFLAGS=['-mios-simulator-version-min=10.0'])
-        env['LIBSUFFIX'] = ".simulator" + env['LIBSUFFIX']
-    else:
-        sdk_name = 'iphoneos'
-        env.Append(CCFLAGS=['-miphoneos-version-min=10.0'])
-
-    try:
-        sdk_path = decode_utf8(subprocess.check_output(['xcrun', '--sdk', sdk_name, '--show-sdk-path']).strip())
-    except (subprocess.CalledProcessError, OSError):
-        raise ValueError("Failed to find SDK path while running xcrun --sdk {} --show-sdk-path.".format(sdk_name))
-
-    compiler_path = env['IPHONEPATH'] + '/usr/bin/'
-    env['ENV']['PATH'] = env['IPHONEPATH'] + "/Developer/usr/bin/:" + env['ENV']['PATH']
-
-    env['CC'] = compiler_path + 'clang'
-    env['CXX'] = compiler_path + 'clang++'
-    env['AR'] = compiler_path + 'ar'
-    env['RANLIB'] = compiler_path + 'ranlib'
-
-    env.Append(CCFLAGS=['-std=c++14', '-arch', env['ios_arch'], '-isysroot', sdk_path])
-    env.Append(LINKFLAGS=[
-        '-arch',
-        env['ios_arch'],
-        '-Wl,-undefined,dynamic_lookup',
-        '-isysroot', sdk_path,
-        '-F' + sdk_path
-    ])
-
-    if env['target'] == 'debug':
-        env.Append(CCFLAGS=['-Og', '-g'])
-    elif env['target'] == 'release':
-        env.Append(CCFLAGS=['-O3'])
-
-
-elif target_platform == 'android':
-    # Verify NDK root
-    if not 'ANDROID_NDK_ROOT' in env:
-        raise ValueError("To build for Android, ANDROID_NDK_ROOT must be defined. Please set ANDROID_NDK_ROOT to the root folder of your Android NDK installation.")
-
-    # Validate API level
-    api_level = int(env['android_api_level'])
-    if target_arch in ['arm64v8', 'x86_64'] and api_level < 21:
-        print("WARN: 64-bit Android architectures require an API level of at least 21; setting android_api_level=21")
-        env['android_api_level'] = '21'
-        api_level = 21
-
-    # Setup toolchain
-    toolchain = env['ANDROID_NDK_ROOT'] + "/toolchains/llvm/prebuilt/"
-    if host_platform == "Windows":
-        toolchain += "windows"
-        import platform as pltfm
-        if pltfm.machine().endswith("64"):
-            toolchain += "-x86_64"
-    elif host_platform == "Linux":
-        toolchain += "linux-x86_64"
-    elif host_platform == "Darwin":
-        toolchain += "darwin-x86_64"
-
-    # Get architecture info
-    arch_info_table = {
-        "armv7" : {
-            "march":"armv7-a", "target":"armv7a-linux-androideabi", "tool_path":"arm-linux-androideabi", "compiler_path":"armv7a-linux-androideabi",
-            "ccflags" : ['-mfpu=neon']
-            },
-        "arm64v8" : {
-            "march":"armv8-a", "target":"aarch64-linux-android", "tool_path":"aarch64-linux-android", "compiler_path":"aarch64-linux-android",
-            "ccflags" : []
-            },
-        "x86" : {
-            "march":"i686", "target":"i686-linux-android", "tool_path":"i686-linux-android", "compiler_path":"i686-linux-android",
-            "ccflags" : ['-mstackrealign']
-            },
-        "x86_64" : {"march":"x86-64", "target":"x86_64-linux-android", "tool_path":"x86_64-linux-android", "compiler_path":"x86_64-linux-android",
-            "ccflags" : []
-            }
-    }
-    arch_info = arch_info_table[target_arch]
-
-    # Setup tools
-    env['CC'] = toolchain + "/bin/clang"
-    env['CXX'] = toolchain + "/bin/clang++"
-
-    env.Append(CCFLAGS=['--target=' + arch_info['target'] + env['android_api_level'], '-march=' + arch_info['march'], '-fPIC'])
-    env.Append(CCFLAGS=arch_info['ccflags'])
-    env.Append(LINKFLAGS=['--target=' + arch_info['target'] + env['android_api_level'], '-march=' + arch_info['march']])
-
-    if env['target'] == 'debug':
-        env.Append(CCFLAGS=['-Og', '-g'])
-    elif env['target'] == 'release':
-        env.Append(CCFLAGS=['-O3'])
+    target_compat = "template_" + env["target"]
+    env["suffix"] = ".{}.{}.{}".format(env["platform"], target_compat, env["arch_suffix"])
+    env["debug_symbols"] = False
 
+    # Some windows specific hacks.
+    if env["platform"] == "windows":
+        if sys.platform not in ["win32", "msys"]:
+            # Set missing CC for MinGW from upstream build module.
+            if env["bits"] == "64":
+                env["CC"] = "x86_64-w64-mingw32-gcc"
+            elif env["bits"] == "32":
+                env["CC"] = "i686-w64-mingw32-gcc"
+        elif not env["use_mingw"]:
+            # Mark as MSVC build (would have failed to build the library otherwise).
+            env["is_msvc"] = True
+elif env["godot_version"] == "4.0":
+    env = SConscript("godot-cpp-4.0/SConstruct").Clone()
 else:
-    print("No valid target platform selected.")
-    sys.exit(1)
+    env = SConscript("godot-cpp/SConstruct").Clone()
 
-# Godot CPP bindings
-env.Append(CPPPATH=[godot_headers])
-env.Append(CPPPATH=[godot_cpp_headers, godot_cpp_headers + '/core', godot_cpp_headers + '/gen'])
-env.Append(LIBPATH=[godot_cpp_lib_dir])
-env.Append(LIBS=['%sgodot-cpp.%s.%s.%s%s' % (lib_prefix, target_platform, target, target_arch, ".simulator" if env["ios_simulator"] else "")])
+# Should probably go to upstream godot-cpp.
+# We let SCons build its default ENV as it includes OS-specific things which we don't
+# want to have to pull in manually.
+# Then we prepend PATH to make it take precedence, while preserving SCons' own entries.
+env.PrependENVPath("PATH", os.getenv("PATH"))
+env.PrependENVPath("PKG_CONFIG_PATH", os.getenv("PKG_CONFIG_PATH"))
+if "TERM" in os.environ:  # Used for colored output.
+    env["ENV"]["TERM"] = os.environ["TERM"]
 
-# WebRTC stuff
-webrtc_dir = "webrtc"
-lib_name = 'libwebrtc_full'
-lib_path = os.path.join(webrtc_dir, target_platform)
+# Patch mingw SHLIBSUFFIX.
+if env["platform"] == "windows" and env["use_mingw"]:
+    env["SHLIBSUFFIX"] = ".dll"
 
-lib_path += {'32': '/x86',
-             '64': '/x64',
-             'armv7': '/arm',
-             'arm64v8': '/arm64',
-             'arm64': '/arm64',
-             'x86': '/x86',
-             'x86_64': '/x64'}[target_arch]
+# Patch OSXCross config.
+if env["platform"] == "macos" and os.environ.get("OSXCROSS_ROOT", ""):
+    env["SHLIBSUFFIX"] = ".dylib"
+    if env["macos_deployment_target"] != "default":
+        env["ENV"]["MACOSX_DEPLOYMENT_TARGET"] = env["macos_deployment_target"]
 
-if target == 'debug':
-    lib_path += '/Debug'
+# Patch linux flags to statically link libgcc and libstdc++
+if env["platform"] == "linux":
+    env.Append(
+        LINKFLAGS=[
+            "-Wl,--no-undefined",
+            "-static-libgcc",
+            "-static-libstdc++",
+        ]
+    )
+    # And add some linux dependencies.
+    env.Append(LIBS=["pthread", "dl"])
+
+opts.Update(env)
+
+target = env["target"]
+if env["godot_version"] == "3":
+    result_path = os.path.join("bin", "gdnative", "webrtc" if env["target"] == "release" else "webrtc_debug")
+elif env["godot_version"] == "4.0":
+    result_path = os.path.join("bin", "extension-4.0", "webrtc")
 else:
-    lib_path += '/Release'
-
-env.Append(CPPPATH=[webrtc_dir + "/include", webrtc_dir + "/include/third_party/abseil-cpp"])
-
-if target_platform == "linux":
-    env.Append(LIBS=[lib_name, "atomic"])
-    env.Append(LIBPATH=[lib_path])
-    #env.Append(CCFLAGS=["-std=c++11"])
-    env.Append(CCFLAGS=["-DWEBRTC_POSIX", "-DWEBRTC_LINUX"])
-    env.Append(CCFLAGS=["-DRTC_UNUSED=''", "-DNO_RETURN=''"])
-
-elif target_platform == "windows":
-    # Mostly VisualStudio
-    if env["CC"] == "cl":
-        env.Append(CCFLAGS=["/DWEBRTC_WIN", "/DWIN32_LEAN_AND_MEAN", "/DNOMINMAX", "/DRTC_UNUSED=", "/DNO_RETURN="])
-        env.Append(LINKFLAGS=[p + env["LIBSUFFIX"] for p in ["secur32", "advapi32", "winmm", lib_name]])
-        env.Append(LIBPATH=[lib_path])
-    # Mostly "gcc"
-    else:
-        env.Append(CCFLAGS=["-DWINVER=0x0603", "-D_WIN32_WINNT=0x0603", "-DWEBRTC_WIN", "-DWIN32_LEAN_AND_MEAN", "-DNOMINMAX", "-DRTC_UNUSED=", "-DNO_RETURN="])
-        env.Append(LINKFLAGS=[p + env["LIBSUFFIX"] for p in ["secur32", "advapi32", "winmm", lib_name]])
-        env.Append(LIBPATH=[lib_path])
-
-elif target_platform == "osx":
-    env.Append(LIBS=[lib_name])
-    env.Append(LIBPATH=[lib_path])
-    env.Append(CCFLAGS=["-DWEBRTC_POSIX", "-DWEBRTC_MAC"])
-    env.Append(CCFLAGS=["-DRTC_UNUSED=''", "-DNO_RETURN=''"])
-
-elif target_platform == 'ios':
-    env.Append(LIBS=[lib_name])
-    env.Append(LIBPATH=[lib_path])
-    env.Append(CCFLAGS=["-DWEBRTC_POSIX", "-DWEBRTC_MAC", "-DWEBRTC_IOS"])
-    env.Append(CCFLAGS=["-DRTC_UNUSED=''", "-DNO_RETURN=''"])
-
-elif target_platform == "android":
-    env.Append(LIBS=['log'])
-    env.Append(LIBS=[lib_name])
-    env.Append(LIBPATH=[lib_path])
-    env.Append(CCFLAGS=["-DWEBRTC_POSIX", "-DWEBRTC_LINUX", "-DWEBRTC_ANDROID"])
-    env.Append(CCFLAGS=["-DRTC_UNUSED=''", "-DNO_RETURN=''"])
-
-    if target_arch == 'arm64v8':
-        env.Append(CCFLAGS=["-DWEBRTC_ARCH_ARM64", "-DWEBRTC_HAS_NEON"])
-    elif target_arch == 'armv7':
-        env.Append(CCFLAGS=["-DWEBRTC_ARCH_ARM", "-DWEBRTC_ARCH_ARM_V7", "-DWEBRTC_HAS_NEON"])
+    result_path = os.path.join("bin", "extension-4.1", "webrtc")
 
 # Our includes and sources
-env.Append(CPPPATH=['src/'])
+env.Append(CPPPATH=["src/"])
+env.Append(CPPDEFINES=["RTC_STATIC"])
 sources = []
-add_sources(sources, 'src/', 'cpp')
-add_sources(sources, 'src/net/', 'cpp')
+sources.append(
+    [
+        "src/WebRTCLibDataChannel.cpp",
+        "src/WebRTCLibPeerConnection.cpp",
+    ]
+)
+if env["godot_version"] == "3":
+    env.Append(CPPDEFINES=["GDNATIVE_WEBRTC"])
+    sources.append("src/init_gdnative.cpp")
+    add_sources(sources, "src/net/", "cpp")
+else:
+    sources.append("src/init_gdextension.cpp")
+    if env["godot_version"] == "4.0":
+        env.Append(CPPDEFINES=["GDEXTENSION_WEBRTC_40"])
 
-# Suffix
-suffix = '.%s.%s' % (target, target_arch)
-env["SHOBJSUFFIX"] = suffix + env["SHOBJSUFFIX"]
+# Add our build tools
+for tool in ["openssl", "cmake", "rtc"]:
+    env.Tool(tool, toolpath=["tools"])
+
+ssl = env.OpenSSL()
+
+rtc = env.BuildLibDataChannel(ssl)
+
+# Forces building our sources after OpenSSL and libdatachannel.
+# This is because OpenSSL headers are generated by their build system and SCons doesn't know about them.
+# Note: This might not be necessary in this specific case since our sources doesn't include OpenSSL headers directly,
+# but it's better to be safe in case of indirect inclusions by one of our other dependencies.
+env.Depends(sources, ssl + rtc)
 
 # Make the shared library
-result_name = 'webrtc_native.%s.%s.%s' % (target_platform, target, target_arch) + env["SHLIBSUFFIX"]
-
-library = env.SharedLibrary(target=os.path.join(result_path, result_name), source=sources)
+result_name = "libwebrtc_native{}{}".format(env["suffix"], env["SHLIBSUFFIX"])
+library = env.SharedLibrary(target=os.path.join(result_path, "lib", result_name), source=sources)
 Default(library)
 
 # GDNativeLibrary
-gdnlib = 'webrtc'
-if target != 'release':
-    gdnlib += '_debug'
-Default(env.GDNativeLibBuilder([os.path.join('bin', gdnlib, gdnlib + '.tres')], ['misc/gdnlib.tres']))
+if env["godot_version"] == "3":
+    gdnlib = "webrtc" if target != "debug" else "webrtc_debug"
+    ext = ".tres"
+    extfile = env.Substfile(
+        os.path.join(result_path, gdnlib + ext),
+        "misc/webrtc" + ext,
+        SUBST_DICT={
+            "{GDNATIVE_PATH}": gdnlib,
+            "{TARGET}": "template_" + env["target"],
+        },
+    )
+else:
+    extfile = env.Substfile(
+        os.path.join(result_path, "webrtc.gdextension"),
+        "misc/webrtc.gdextension",
+        SUBST_DICT={"{GODOT_VERSION}": env["godot_version"]},
+    )
+
+Default(extfile)

misc/gdnlib.tres

@@ -1,28 +0,0 @@
-[gd_resource type="GDNativeLibrary" format=2]
-
-[resource]
-singleton = true
-reloadable = false
-entry/OSX.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.osx.{TARGET}.64.dylib"
-entry/OSX.arm64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.osx.{TARGET}.arm64.dylib"
-entry/Windows.64 = "res://{GDNATIVE_PATH}/lib/webrtc_native.windows.{TARGET}.64.dll"
-entry/Windows.32 = "res://{GDNATIVE_PATH}/lib/webrtc_native.windows.{TARGET}.32.dll"
-entry/X11.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.64.so"
-entry/X11.32 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.32.so"
-entry/Server.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.64.so"
-entry/Server.32 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.32.so"
-entry/Android.armeabi-v7a = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.armv7.so"
-entry/Android.arm64-v8a = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.arm64v8.so"
-entry/Android.x64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.x86_64.so"
-entry/Android.x86 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.x86.so"
-entry/iOS.armv7 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.armv7.dylib"
-entry/iOS.arm64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.arm64.dylib"
-entry/iOS.x86_64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.x86_64.dylib"
-dependency/Windows.64 = [  ]
-dependency/Windows.32 = [  ]
-dependency/X11.64 = [  ]
-dependency/X11.32 = [  ]
-dependency/Server.64 = [  ]
-dependency/Server.32 = [  ]
-dependency/Android.armeabi-v7a = [  ]
-dependency/Android.arm64-v8a = [  ]

misc/patches/scons_path.diff

@@ -0,0 +1,29 @@
+diff --git a/godot-cpp-4.0/SConstruct b/godot-cpp-4.0/SConstruct
+index 27ee137..32b425e 100644
+--- a/godot-cpp-4.0/SConstruct
++++ b/godot-cpp-4.0/SConstruct
+@@ -54,6 +54,8 @@ else:
+ # Default tools with no platform defaults to gnu toolchain.
+ # We apply platform specific toolchains via our custom tools.
+ env = Environment(tools=["default"], PLATFORM="")
++# Allows us to use Godot buildroot toolchain
++env.PrependENVPath("PATH", os.getenv("PATH"))
+
+ # Default num_jobs to local cpu count if not user specified.
+ # SCons has a peculiarity where user-specified options won't be overridden
+
+diff --git a/godot-cpp-3.x/SConstruct b/godot-cpp-3.x/SConstruct
+index f653d54..6f40377 100644
+--- a/godot-cpp-3.x/SConstruct
++++ b/godot-cpp-3.x/SConstruct
+@@ -194,6 +194,9 @@ if host_platform == "windows" and env["platform"] != "android":
+
+     opts.Update(env)
+
++# Allows us to use Godot buildroot toolchain
++env.PrependENVPath("PATH", os.getenv("PATH"))
++
+ # Require C++14
+ if host_platform == "windows" and env["platform"] == "windows" and not env["use_mingw"]:
+     # MSVC
+

misc/scripts/black_format.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# This script runs black on all Python files in the repo.
+
+set -uo pipefail
+
+# Apply black.
+echo -e "Formatting Python files..."
+PY_FILES=$(git ls-files -- '*SConstruct' '*SCsub' '*.py' ':!:.git/*' ':!:thirdparty/*')
+black -l 120 $PY_FILES
+
+diff=$(git diff --color)
+
+# If no diff has been generated all is OK, clean up, and exit.
+if [ -z "$diff" ] ; then
+    printf "\e[1;32m*** Files in this commit comply with the black style rules.\e[0m\n"
+    exit 0
+fi
+
+# A diff has been created, notify the user, clean up, and exit.
+printf "\n\e[1;33m*** The following changes must be made to comply with the formatting rules:\e[0m\n\n"
+# Perl commands replace trailing spaces with `·` and tabs with `<TAB>`.
+printf "$diff\n" | perl -pe 's/(.*[^ ])( +)(\e\[m)$/my $spaces="·" x length($2); sprintf("$1$spaces$3")/ge' | perl -pe 's/(.*[^\t])(\t+)(\e\[m)$/my $tabs="<TAB>" x length($2); sprintf("$1$tabs$3")/ge'
+
+printf "\n\e[1;91m*** Please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\e[0m\n"
+exit 1

misc/scripts/clang_format.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+# This script runs clang-format and fixes copyright headers on all relevant files in the repo.
+# This is the primary script responsible for fixing style violations.
+
+set -uo pipefail
+
+if [ $# -eq 0 ]; then
+    # Loop through all code files tracked by Git.
+    files=$(git ls-files -- '*.c' '*.h' '*.cpp' '*.hpp' '*.cc' '*.hh' '*.cxx' '*.m' '*.mm' '*.inc' '*.java' '*.glsl' \
+                ':!:.git/*' ':!:thirdparty/*' ':!:*/thirdparty/*' ':!:platform/android/java/lib/src/com/google/*' \
+                ':!:*-so_wrap.*' ':!:tests/python_build/*')
+else
+    # $1 should be a file listing file paths to process. Used in CI.
+    files=$(cat "$1" | grep -v "thirdparty/" | grep -E "\.(c|h|cpp|hpp|cc|hh|cxx|m|mm|inc|java|glsl)$" | grep -v "platform/android/java/lib/src/com/google/" | grep -v "\-so_wrap\." | grep -v "tests/python_build/")
+fi
+
+if [ ! -z "$files" ]; then
+    clang-format --Wno-error=unknown -i $files
+fi
+
+# Fix copyright headers, but not all files get them.
+for f in $files; do
+    if [[ "$f" == *"inc" ]]; then
+        continue
+    elif [[ "$f" == *"glsl" ]]; then
+        continue
+    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/gl/GLSurfaceView"* ]]; then
+        continue
+    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/gl/EGLLogWrapper"* ]]; then
+        continue
+    elif [[ "$f" == "platform/android/java/lib/src/org/godotengine/godot/utils/ProcessPhoenix"* ]]; then
+        continue
+    fi
+
+    python misc/scripts/copyright_headers.py "$f"
+done
+
+diff=$(git diff --color)
+
+# If no diff has been generated all is OK, clean up, and exit.
+if [ -z "$diff" ] ; then
+    printf "\e[1;32m*** Files in this commit comply with the clang-format style rules.\e[0m\n"
+    exit 0
+fi
+
+# A diff has been created, notify the user, clean up, and exit.
+printf "\n\e[1;33m*** The following changes must be made to comply with the formatting rules:\e[0m\n\n"
+# Perl commands replace trailing spaces with `·` and tabs with `<TAB>`.
+printf "$diff\n" | perl -pe 's/(.*[^ ])( +)(\e\[m)$/my $spaces="·" x length($2); sprintf("$1$spaces$3")/ge' | perl -pe 's/(.*[^\t])(\t+)(\e\[m)$/my $tabs="<TAB>" x length($2); sprintf("$1$tabs$3")/ge'
+
+printf "\n\e[1;91m*** Please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\e[0m\n"
+exit 1

misc/scripts/copyright_headers.py

@@ -0,0 +1,95 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import sys
+
+header = """\
+/**************************************************************************/
+/*  $filename                                                             */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+"""
+
+fname = sys.argv[1]
+
+# Handle replacing $filename with actual filename and keep alignment
+fsingle = fname.strip()
+if fsingle.find("/") != -1:
+    fsingle = fsingle[fsingle.rfind("/") + 1 :]
+rep_fl = "$filename"
+rep_fi = fsingle
+len_fl = len(rep_fl)
+len_fi = len(rep_fi)
+# Pad with spaces to keep alignment
+if len_fi < len_fl:
+    for x in range(len_fl - len_fi):
+        rep_fi += " "
+elif len_fl < len_fi:
+    for x in range(len_fi - len_fl):
+        rep_fl += " "
+if header.find(rep_fl) != -1:
+    text = header.replace(rep_fl, rep_fi)
+else:
+    text = header.replace("$filename", fsingle)
+text += "\n"
+
+# We now have the proper header, so we want to ignore the one in the original file
+# and potentially empty lines and badly formatted lines, while keeping comments that
+# come after the header, and then keep everything non-header unchanged.
+# To do so, we skip empty lines that may be at the top in a first pass.
+# In a second pass, we skip all consecutive comment lines starting with "/*",
+# then we can append the rest (step 2).
+
+fileread = open(fname.strip(), "r")
+line = fileread.readline()
+header_done = False
+
+while line.strip() == "":  # Skip empty lines at the top
+    line = fileread.readline()
+
+if line.find("/**********") == -1:  # Godot header starts this way
+    # Maybe starting with a non-Godot comment, abort header magic
+    header_done = True
+
+while not header_done:  # Handle header now
+    if line.find("/*") != 0:  # No more starting with a comment
+        header_done = True
+        if line.strip() != "":
+            text += line
+    line = fileread.readline()
+
+while line != "":  # Dump everything until EOF
+    text += line
+    line = fileread.readline()
+
+fileread.close()
+
+# Write
+filewrite = open(fname.strip(), "w")
+filewrite.write(text)
+filewrite.close()

misc/scripts/file_format.sh

@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+
+# This script ensures proper POSIX text file formatting and a few other things.
+# This is supplementary to clang_format.sh and black_format.sh, but should be
+# run before them.
+
+# We need dos2unix and isutf8.
+if [ ! -x "$(command -v dos2unix)" -o ! -x "$(command -v isutf8)" ]; then
+    printf "Install 'dos2unix' and 'isutf8' (moreutils package) to use this script.\n"
+    exit 1
+fi
+
+set -uo pipefail
+
+if [ $# -eq 0 ]; then
+    # Loop through all code files tracked by Git.
+    mapfile -d '' files < <(git grep -zIl '')
+else
+    # $1 should be a file listing file paths to process. Used in CI.
+    mapfile -d ' ' < <(cat "$1")
+fi
+
+for f in "${files[@]}"; do
+    # Exclude some types of files.
+    if [[ "$f" == *"csproj" ]]; then
+        continue
+    elif [[ "$f" == *"sln" ]]; then
+        continue
+    elif [[ "$f" == *".bat" ]]; then
+        continue
+    elif [[ "$f" == *".out" ]]; then
+        # GDScript integration testing files.
+        continue
+    elif [[ "$f" == *"patch" ]]; then
+        continue
+    elif [[ "$f" == *"pot" ]]; then
+        continue
+    elif [[ "$f" == *"po" ]]; then
+        continue
+    elif [[ "$f" == "thirdparty/"* ]]; then
+        continue
+    elif [[ "$f" == *"/thirdparty/"* ]]; then
+        continue
+    elif [[ "$f" == "platform/android/java/lib/src/com/google"* ]]; then
+        continue
+    elif [[ "$f" == *"-so_wrap."* ]]; then
+        continue
+    elif [[ "$f" == *".test.txt" ]]; then
+        continue
+    fi
+    # Ensure that files are UTF-8 formatted.
+    isutf8 "$f" >> utf8-validation.txt 2>&1
+    # Ensure that files have LF line endings and do not contain a BOM.
+    dos2unix "$f" 2> /dev/null
+    # Remove trailing space characters and ensures that files end
+    # with newline characters. -l option handles newlines conveniently.
+    perl -i -ple 's/\s*$//g' "$f"
+done
+
+diff=$(git diff --color)
+
+if [ ! -s utf8-validation.txt ] && [ -z "$diff" ] ; then
+    # If no UTF-8 violations were collected (the file is empty) and
+    # no diff has been generated all is OK, clean up, and exit.
+    printf "\e[1;32m*** Files in this commit comply with the file formatting rules.\e[0m\n"
+    rm -f utf8-validation.txt
+    exit 0
+fi
+
+if [ -s utf8-validation.txt ]
+then
+    # If the file has content and is not empty, violations
+    # detected, notify the user, clean up, and exit.
+    printf "\n\e[1;33m*** The following files contain invalid UTF-8 character sequences:\e[0m\n\n"
+    cat utf8-validation.txt
+fi
+
+rm -f utf8-validation.txt
+
+if [ ! -z "$diff" ]
+then
+    # A diff has been created, notify the user, clean up, and exit.
+    printf "\n\e[1;33m*** The following changes must be made to comply with the formatting rules:\e[0m\n\n"
+    # Perl commands replace trailing spaces with `·` and tabs with `<TAB>`.
+    printf "$diff\n" | perl -pe 's/(.*[^ ])( +)(\e\[m)$/my $spaces="·" x length($2); sprintf("$1$spaces$3")/ge' | perl -pe 's/(.*[^\t])(\t+)(\e\[m)$/my $tabs="<TAB>" x length($2); sprintf("$1$tabs$3")/ge'
+fi
+
+printf "\n\e[1;91m*** Please fix your commit(s) with 'git commit --amend' or 'git rebase -i <hash>'\e[0m\n"
+exit 1

misc/scripts/package_release.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -e
+set -x
+
+ARTIFACTS=${ARTIFACTS:-"artifacts"}
+DESTINATION=${DESTIONATION:-"release"}
+VERSION=${VERSION:-"extension"}
+TYPE=${TYPE:-"webrtc"}
+
+mkdir -p ${DESTINATION}
+ls -R ${DESTINATION}
+ls -R ${ARTIFACTS}
+
+DESTDIR="${DESTINATION}/${VERSION}/${TYPE}"
+
+mkdir -p ${DESTDIR}/lib
+
+find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/lib/*" | xargs cp -t "${DESTDIR}/lib/"
+find "${ARTIFACTS}" -wholename "*/LICENSE*" | xargs cp -t "${DESTDIR}/"
+
+if [ $VERSION = "gdnative" ]; then
+    find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/${TYPE}.tres" | head -n 1 | xargs cp -t "${DESTDIR}/"
+else
+    find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/${TYPE}.gdextension" | head -n 1 | xargs cp -t "${DESTDIR}/"
+fi
+
+CURDIR=$(pwd)
+cd "${DESTINATION}/${VERSION}"
+zip -r ../godot-${VERSION}-${TYPE}.zip ${TYPE}
+cd "$CURDIR"
+
+ls -R ${DESTINATION}

misc/webrtc.gdextension

@@ -0,0 +1,30 @@
+[configuration]
+
+entry_symbol = "webrtc_extension_init"
+compatibility_minimum = {GODOT_VERSION}
+
+[libraries]
+
+linux.debug.x86_64 = "res://webrtc/lib/libwebrtc_native.linux.template_debug.x86_64.so"
+linux.debug.x86_32 = "res://webrtc/lib/libwebrtc_native.linux.template_debug.x86_32.so"
+linux.debug.arm64 = "res://webrtc/lib/libwebrtc_native.linux.template_debug.arm64.so"
+linux.debug.arm32 = "res://webrtc/lib/libwebrtc_native.linux.template_debug.arm32.so"
+macos.debug = "res://webrtc/lib/libwebrtc_native.macos.template_debug.universal.dylib"
+windows.debug.x86_64 = "res://webrtc/lib/libwebrtc_native.windows.template_debug.x86_64.dll"
+windows.debug.x86_32 = "res://webrtc/lib/libwebrtc_native.windows.template_debug.x86_32.dll"
+android.debug.arm64 = "res://webrtc/lib/libwebrtc_native.android.template_debug.arm64.so"
+android.debug.x86_64 = "res://webrtc/lib/libwebrtc_native.android.template_debug.x86_64.so"
+ios.debug.arm64 = "res://webrtc/lib/libwebrtc_native.ios.template_debug.arm64.dylib"
+ios.debug.x86_64 = "res://webrtc/lib/libwebrtc_native.ios.template_debug.x86_64.simulator.dylib"
+
+linux.release.x86_64 = "res://webrtc/lib/libwebrtc_native.linux.template_release.x86_64.so"
+linux.release.x86_32 = "res://webrtc/lib/libwebrtc_native.linux.template_release.x86_32.so"
+linux.release.arm64 = "res://webrtc/lib/libwebrtc_native.linux.template_release.arm64.so"
+linux.release.arm32 = "res://webrtc/lib/libwebrtc_native.linux.template_release.arm32.so"
+macos.release = "res://webrtc/lib/libwebrtc_native.macos.template_release.universal.dylib"
+windows.release.x86_64 = "res://webrtc/lib/libwebrtc_native.windows.template_release.x86_64.dll"
+windows.release.x86_32 = "res://webrtc/lib/libwebrtc_native.windows.template_release.x86_32.dll"
+android.release.arm64 = "res://webrtc/lib/libwebrtc_native.android.template_release.arm64.so"
+android.release.x86_64 = "res://webrtc/lib/libwebrtc_native.android.template_release.x86_64.so"
+ios.release.arm64 = "res://webrtc/lib/libwebrtc_native.ios.template_release.arm64.dylib"
+ios.release.x86_64 = "res://webrtc/lib/libwebrtc_native.ios.template_release.x86_64.simulator.dylib"

misc/webrtc.tres

@@ -0,0 +1,17 @@
+[gd_resource type="GDNativeLibrary" format=2]
+
+[resource]
+singleton = true
+reloadable = false
+entry/OSX.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.macos.{TARGET}.universal.dylib"
+entry/Windows.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.windows.{TARGET}.x86_64.dll"
+entry/Windows.32 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.windows.{TARGET}.x86_32.dll"
+entry/X11.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.x86_64.so"
+entry/X11.32 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.x86_32.so"
+entry/Server.64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.x86_64.so"
+entry/Server.32 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.linux.{TARGET}.x86_32.so"
+entry/Android.arm64-v8a = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.arm64.so"
+entry/Android.x64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.android.{TARGET}.x86_64.so"
+entry/iOS.armv7 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.armv32.dylib"
+entry/iOS.arm64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.arm64.dylib"
+entry/iOS.x86_64 = "res://{GDNATIVE_PATH}/lib/libwebrtc_native.ios.{TARGET}.x86_64.simulator.dylib"

src/WebRTCLibDataChannel.cpp

@@ -1,133 +1,184 @@
+/**************************************************************************/
+/*  WebRTCLibDataChannel.cpp                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #include "WebRTCLibDataChannel.hpp"
 
+#ifdef GDNATIVE_WEBRTC
 #include "GDNativeLibrary.hpp"
 #include "NativeScript.hpp"
+#define ERR_UNAVAILABLE Error::ERR_UNAVAILABLE
+#define FAILED Error::FAILED
+#define ERR_INVALID_PARAMETER Error::ERR_INVALID_PARAMETER
+#define OK Error::OK
+#endif
 
+#include <stdio.h>
+#include <string.h>
+#include <cstring>
+
+using namespace godot;
 using namespace godot_webrtc;
 
-// Channel observer
-WebRTCLibDataChannel::ChannelObserver::ChannelObserver(WebRTCLibDataChannel *parent) {
-	this->parent = parent;
-}
-
-void WebRTCLibDataChannel::ChannelObserver::OnMessage(const webrtc::DataBuffer &buffer) {
-	parent->queue_packet(buffer.data.data<uint8_t>(), buffer.data.size());
-}
-
-void WebRTCLibDataChannel::ChannelObserver::OnStateChange() {
-}
-
-void WebRTCLibDataChannel::ChannelObserver::OnBufferedAmountChange(uint64_t previous_amount) {
-}
-
 // DataChannel
-WebRTCLibDataChannel *WebRTCLibDataChannel::new_data_channel(rtc::scoped_refptr<webrtc::DataChannelInterface> p_channel) {
+WebRTCLibDataChannel *WebRTCLibDataChannel::new_data_channel(std::shared_ptr<rtc::DataChannel> p_channel, bool p_negotiated) {
 	// Invalid channel result in NULL return
-	ERR_FAIL_COND_V(p_channel.get() == nullptr, NULL);
+	ERR_FAIL_COND_V(!p_channel, nullptr);
 
+#ifdef GDNATIVE_WEBRTC
 	// Instance a WebRTCDataChannelGDNative object
-	godot::WebRTCDataChannelGDNative *out = godot::WebRTCDataChannelGDNative::_new();
-	// Set our implementation as it's script
-	godot::NativeScript *script = godot::NativeScript::_new();
-	script->set_library(godot::detail::get_wrapper<godot::GDNativeLibrary>((godot_object *)godot::gdnlib));
+	WebRTCDataChannelGDNative *native = WebRTCDataChannelGDNative::_new();
+	// Set our implementation as its script
+	NativeScript *script = NativeScript::_new();
+	script->set_library(detail::get_wrapper<GDNativeLibrary>((godot_object *)gdnlib));
 	script->set_class_name("WebRTCLibDataChannel");
-	out->set_script(script);
-
-	// Bind the data channel to the ScriptInstance userdata (our script)
-	WebRTCLibDataChannel *tmp = out->cast_to<WebRTCLibDataChannel>(out);
-	tmp->bind_channel(p_channel);
-
-	return tmp;
+	native->set_script(script);
+	WebRTCLibDataChannel *out = native->cast_to<WebRTCLibDataChannel>(native);
+#else
+	WebRTCLibDataChannel *out = memnew(WebRTCLibDataChannel);
+#endif
+	// Bind the library data channel to our object.
+	out->bind_channel(p_channel, p_negotiated);
+	return out;
 }
 
-
-void WebRTCLibDataChannel::bind_channel(rtc::scoped_refptr<webrtc::DataChannelInterface> p_channel) {
-	ERR_FAIL_COND(p_channel.get() == nullptr);
+void WebRTCLibDataChannel::bind_channel(std::shared_ptr<rtc::DataChannel> p_channel, bool p_negotiated) {
+	ERR_FAIL_COND(!p_channel);
 
 	channel = p_channel;
-	label = p_channel->label();
-	protocol = p_channel->protocol();
-	channel->RegisterObserver(&observer);
+	negotiated = p_negotiated;
+
+	// Binding this should be fine as long as we call close when going out of scope.
+	p_channel->onMessage([this](auto message) {
+		if (std::holds_alternative<rtc::string>(message)) {
+			rtc::string str = std::get<rtc::string>(message);
+			queue_packet(reinterpret_cast<const uint8_t *>(str.c_str()), str.size(), true);
+		} else if (std::holds_alternative<rtc::binary>(message)) {
+			rtc::binary bin = std::get<rtc::binary>(message);
+			queue_packet(reinterpret_cast<const uint8_t *>(&bin[0]), bin.size(), false);
+		} else {
+			ERR_PRINT("Message parsing bug. Unknown message type.");
+		}
+	});
+	p_channel->onOpen([this]() {
+		channel_state = STATE_OPEN;
+	});
+	p_channel->onClosed([this]() {
+		channel_state = STATE_CLOSED;
+	});
+	p_channel->onError([](auto error) {
+		ERR_PRINT("Channel Error: " + String(std::string(error).c_str()));
+	});
 }
 
-void WebRTCLibDataChannel::queue_packet(const uint8_t *data, uint32_t size) {
+void WebRTCLibDataChannel::queue_packet(const uint8_t *data, uint32_t size, bool p_is_string) {
 	mutex->lock();
 
-	godot::PoolByteArray packet;
+	std::vector<uint8_t> packet;
 	packet.resize(size);
-	{
-		godot::PoolByteArray::Write w = packet.write();
-		memcpy(w.ptr(), data, size);
-	}
-	packet_queue.push(packet);
+	memcpy(&packet[0], data, size);
+	packet_queue.push(QueuedPacket(packet, p_is_string));
 
 	mutex->unlock();
 }
 
-void WebRTCLibDataChannel::set_write_mode(godot_int mode) {
+void WebRTCLibDataChannel::_set_write_mode(WriteMode p_mode) {
+	ERR_FAIL_COND(p_mode != WRITE_MODE_TEXT && p_mode != WRITE_MODE_BINARY);
+	write_mode = p_mode;
 }
 
-godot_int WebRTCLibDataChannel::get_write_mode() const {
-	return 0;
+WebRTCDataChannel::WriteMode WebRTCLibDataChannel::_get_write_mode() const {
+	return write_mode;
 }
 
-bool WebRTCLibDataChannel::was_string_packet() const {
-	return false;
+bool WebRTCLibDataChannel::_was_string_packet() const {
+	return current_packet.second;
 }
 
-WebRTCLibDataChannel::ChannelState WebRTCLibDataChannel::get_ready_state() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, STATE_CLOSED);
-	return (ChannelState)channel->state();
+WebRTCDataChannel::ChannelState WebRTCLibDataChannel::_get_ready_state() const {
+	ERR_FAIL_COND_V(!channel, STATE_CLOSED);
+	return channel_state;
 }
 
-const char *WebRTCLibDataChannel::get_label() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, "");
-	return label.c_str();
+String WebRTCLibDataChannel::_get_label() const {
+	ERR_FAIL_COND_V(!channel, "");
+	return channel->label().c_str();
 }
 
-bool WebRTCLibDataChannel::is_ordered() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, false);
-	return channel->ordered();
+bool WebRTCLibDataChannel::_is_ordered() const {
+	ERR_FAIL_COND_V(!channel, false);
+	return channel->reliability().unordered == false;
 }
 
-int WebRTCLibDataChannel::get_id() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, -1);
-	return channel->id();
+int32_t WebRTCLibDataChannel::_get_id() const {
+	ERR_FAIL_COND_V(!channel, -1);
+	return channel->id().value_or(-1);
 }
 
-int WebRTCLibDataChannel::get_max_packet_life_time() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, 0);
-	return channel->maxRetransmitTime();
+int32_t WebRTCLibDataChannel::_get_max_packet_life_time() const {
+	ERR_FAIL_COND_V(!channel, 0);
+	return channel->reliability().type == rtc::Reliability::Type::Timed ? std::get<std::chrono::milliseconds>(channel->reliability().rexmit).count() : -1;
 }
 
-int WebRTCLibDataChannel::get_max_retransmits() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, 0);
-	return channel->maxRetransmits();
+int32_t WebRTCLibDataChannel::_get_max_retransmits() const {
+	ERR_FAIL_COND_V(!channel, 0);
+	return channel->reliability().type == rtc::Reliability::Type::Rexmit ? std::get<int>(channel->reliability().rexmit) : -1;
 }
 
-const char *WebRTCLibDataChannel::get_protocol() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, "");
-	return protocol.c_str();
+String WebRTCLibDataChannel::_get_protocol() const {
+	ERR_FAIL_COND_V(!channel, "");
+	return channel->protocol().c_str();
 }
 
-bool WebRTCLibDataChannel::is_negotiated() const {
-	ERR_FAIL_COND_V(channel.get() == nullptr, false);
-	return channel->negotiated();
+bool WebRTCLibDataChannel::_is_negotiated() const {
+	ERR_FAIL_COND_V(!channel, false);
+	return negotiated;
 }
 
-godot_error WebRTCLibDataChannel::poll() {
-	return GODOT_OK;
+int32_t WebRTCLibDataChannel::_get_buffered_amount() const {
+	ERR_FAIL_COND_V(!channel, 0);
+	return channel->bufferedAmount();
 }
 
-void WebRTCLibDataChannel::close() {
-	if(channel.get() != nullptr) {
-		channel->Close();
-		channel->UnregisterObserver();
+Error WebRTCLibDataChannel::_poll() {
+	return OK;
+}
+
+void WebRTCLibDataChannel::_close() try {
+	if (channel) {
+		channel->close();
 	}
+} catch (...) {
 }
 
-godot_error WebRTCLibDataChannel::get_packet(const uint8_t **r_buffer, int *r_len) {
-	ERR_FAIL_COND_V(packet_queue.empty(), GODOT_ERR_UNAVAILABLE);
+Error WebRTCLibDataChannel::_get_packet(const uint8_t **r_buffer, int32_t *r_len) {
+	ERR_FAIL_COND_V(packet_queue.empty(), ERR_UNAVAILABLE);
 
 	mutex->lock();
 
@@ -135,46 +186,46 @@ godot_error WebRTCLibDataChannel::get_packet(const uint8_t **r_buffer, int *r_le
 	current_packet = packet_queue.front();
 	packet_queue.pop();
 	// Set out buffer and size (buffer will be gone at next get_packet or close)
-	*r_buffer = current_packet.read().ptr();
-	*r_len = current_packet.size();
+	*r_buffer = &current_packet.first[0];
+	*r_len = current_packet.first.size();
 
 	mutex->unlock();
 
-	return GODOT_OK;
+	return OK;
 }
 
-godot_error WebRTCLibDataChannel::put_packet(const uint8_t *p_buffer, int p_len) {
-	ERR_FAIL_COND_V(channel.get() == nullptr, GODOT_ERR_UNAVAILABLE);
-
-	webrtc::DataBuffer webrtc_buffer(rtc::CopyOnWriteBuffer(p_buffer, p_len), true);
-	ERR_FAIL_COND_V(!channel->Send(webrtc_buffer), GODOT_FAILED);
-
-	return GODOT_OK;
+Error WebRTCLibDataChannel::_put_packet(const uint8_t *p_buffer, int32_t p_len) try {
+	ERR_FAIL_COND_V(!channel, FAILED);
+	ERR_FAIL_COND_V(channel->isClosed(), FAILED);
+	if (write_mode == WRITE_MODE_TEXT) {
+		std::string str(p_len, '\x00');
+		std::strncpy(str.data(), (const char *)p_buffer, p_len);
+		channel->send(str);
+	} else if (write_mode == WRITE_MODE_BINARY) {
+		channel->send(reinterpret_cast<const std::byte *>(p_buffer), p_len);
+	} else {
+		ERR_FAIL_V(ERR_INVALID_PARAMETER);
+	}
+	return OK;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(FAILED);
 }
 
-godot_int WebRTCLibDataChannel::get_available_packet_count() const {
+int32_t WebRTCLibDataChannel::_get_available_packet_count() const {
 	return packet_queue.size();
 }
 
-godot_int WebRTCLibDataChannel::get_max_packet_size() const {
-	return 1200;
+int32_t WebRTCLibDataChannel::_get_max_packet_size() const {
+	return 16384; // See RFC-8831 section 6.6: https://datatracker.ietf.org/doc/rfc8831/
 }
 
-void WebRTCLibDataChannel::_register_methods() {
-}
-
-void WebRTCLibDataChannel::_init() {
-	register_interface(&interface);
-}
-
-WebRTCLibDataChannel::WebRTCLibDataChannel() : observer(this) {
+WebRTCLibDataChannel::WebRTCLibDataChannel() {
 	mutex = new std::mutex;
 }
 
 WebRTCLibDataChannel::~WebRTCLibDataChannel() {
-	close();
-	if (_owner) {
-		register_interface(NULL);
-	}
+	_close();
+	channel = nullptr;
 	delete mutex;
 }

src/WebRTCLibDataChannel.hpp

@@ -1,71 +1,105 @@
+/**************************************************************************/
+/*  WebRTCLibDataChannel.hpp                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #ifndef WEBRTC_DATA_CHANNEL_H
 #define WEBRTC_DATA_CHANNEL_H
 
+#ifdef GDNATIVE_WEBRTC
 #include <Godot.hpp> // Godot.hpp must go first, or windows builds breaks
 
-#include "api/peer_connection_interface.h" // interface for all things needed from WebRTC
-#include "media/base/media_engine.h" // needed for CreateModularPeerConnectionFactory
-
 #include "net/WebRTCDataChannelNative.hpp"
-#include "PoolArrays.hpp"
+#define WebRTCDataChannelExtension WebRTCDataChannelNative
+#if !defined(GDCLASS)
+#define GDCLASS(arg1, arg2) GODOT_CLASS(arg1, arg2)
+#endif
+#else
+#include <godot_cpp/core/binder_common.hpp>
+
+#include <godot_cpp/classes/global_constants_binds.hpp>
+#include <godot_cpp/classes/web_rtc_data_channel_extension.hpp>
+#endif
+
 #include <mutex>
+#include <queue>
+#include <utility>
+
+#include "rtc/rtc.hpp"
 
 namespace godot_webrtc {
 
-class WebRTCLibDataChannel : public WebRTCDataChannelNative {
-	GODOT_CLASS(WebRTCLibDataChannel, WebRTCDataChannelNative);
+class WebRTCLibDataChannel : public godot::WebRTCDataChannelExtension {
+	GDCLASS(WebRTCLibDataChannel, WebRTCDataChannelExtension);
 
 private:
-	class ChannelObserver : public webrtc::DataChannelObserver {
-	public:
-		WebRTCLibDataChannel *parent;
-
-		ChannelObserver(WebRTCLibDataChannel *parent);
-		void OnMessage(const webrtc::DataBuffer &buffer) override;
-		void OnStateChange() override; // UNUSED
-		void OnBufferedAmountChange(uint64_t previous_amount) override; // UNUSED
-	};
-
-	ChannelObserver observer;
-	rtc::scoped_refptr<webrtc::DataChannelInterface> channel;
-
+	using QueuedPacket = std::pair<std::vector<uint8_t>, bool>;
 	std::mutex *mutex;
-	std::queue<godot::PoolByteArray> packet_queue;
-	godot::PoolByteArray current_packet;
-	std::string label;
-	std::string protocol;
+	std::queue<QueuedPacket> packet_queue;
+	QueuedPacket current_packet;
+	std::shared_ptr<rtc::DataChannel> channel = nullptr;
+
+	WriteMode write_mode = WRITE_MODE_BINARY;
+	ChannelState channel_state = STATE_CONNECTING;
+	bool negotiated = false;
+
+	void queue_packet(const uint8_t *data, uint32_t size, bool p_is_string);
+	void bind_channel(std::shared_ptr<rtc::DataChannel> p_channel, bool p_negotiated);
+
+protected:
+	static void _bind_methods() {}
 
 public:
-	static WebRTCLibDataChannel *new_data_channel(rtc::scoped_refptr<webrtc::DataChannelInterface> p_channel);
-	static void _register_methods();
-
-	void _init();
-
-	void bind_channel(rtc::scoped_refptr<webrtc::DataChannelInterface> p_channel);
-	void queue_packet(const uint8_t *data, uint32_t size);
-
-	/* WebRTCDataChannel */
-	void set_write_mode(godot_int mode);
-	godot_int get_write_mode() const;
-	bool was_string_packet() const;
-
-	ChannelState get_ready_state() const;
-	const char *get_label() const;
-	bool is_ordered() const;
-	int get_id() const;
-	int get_max_packet_life_time() const;
-	int get_max_retransmits() const;
-	const char *get_protocol() const;
-	bool is_negotiated() const;
-
-	godot_error poll();
-	void close();
+	static WebRTCLibDataChannel *new_data_channel(std::shared_ptr<rtc::DataChannel> p_channel, bool p_negotiated);
 
 	/* PacketPeer */
-	virtual godot_error get_packet(const uint8_t **r_buffer, int *r_len);
-	virtual godot_error put_packet(const uint8_t *p_buffer, int p_len);
-	virtual godot_int get_available_packet_count() const;
-	virtual godot_int get_max_packet_size() const;
+	virtual godot::Error _get_packet(const uint8_t **r_buffer, int32_t *r_len) override;
+	virtual godot::Error _put_packet(const uint8_t *p_buffer, int32_t p_len) override;
+	virtual int32_t _get_available_packet_count() const override;
+	virtual int32_t _get_max_packet_size() const override;
+
+	/* WebRTCDataChannel */
+	godot::Error _poll() override;
+	void _close() override;
+
+	void _set_write_mode(WriteMode p_mode) override;
+	WriteMode _get_write_mode() const override;
+	bool _was_string_packet() const override;
+
+	ChannelState _get_ready_state() const override;
+	godot::String _get_label() const override;
+	bool _is_ordered() const override;
+	int32_t _get_id() const override;
+	int32_t _get_max_packet_life_time() const override;
+	int32_t _get_max_retransmits() const override;
+	godot::String _get_protocol() const override;
+	bool _is_negotiated() const override;
+	int32_t _get_buffered_amount() const override;
 
 	WebRTCLibDataChannel();
 	~WebRTCLibDataChannel();

src/WebRTCLibPeerConnection.cpp

@@ -1,207 +1,259 @@
-#include "WebRTCDataChannel.hpp"
-#include "WebRTCDataChannelGDNative.hpp"
+/**************************************************************************/
+/*  WebRTCLibPeerConnection.cpp                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #include "WebRTCLibPeerConnection.hpp"
 #include "WebRTCLibDataChannel.hpp"
 
+using namespace godot;
 using namespace godot_webrtc;
 
-std::unique_ptr<rtc::Thread> WebRTCLibPeerConnection::signaling_thread = nullptr;
-
-// PeerConnectionObserver
-void WebRTCLibPeerConnection::GodotPCO::OnIceCandidate(const webrtc::IceCandidateInterface *candidate) {
-	godot::Dictionary candidateSDP;
-	godot::String candidateSdpMidName = candidate->sdp_mid().c_str();
-	int candidateSdpMlineIndexName = candidate->sdp_mline_index();
-	std::string sdp;
-	candidate->ToString(&sdp);
-	godot::String candidateSdpName = sdp.c_str();
-	parent->queue_signal("ice_candidate_created", 3, candidateSdpMidName, candidateSdpMlineIndexName, candidateSdpName);
-}
-
-// SetSessionDescriptionObserver
-void WebRTCLibPeerConnection::GodotSSDO::OnSuccess() {
-	if (make_offer) {
-		make_offer = false;
-		parent->peer_connection->CreateAnswer(parent->ptr_csdo, webrtc::PeerConnectionInterface::RTCOfferAnswerOptions());
-	}
-}
-
-// CreateSessionDescriptionObserver
-void WebRTCLibPeerConnection::GodotCSDO::OnSuccess(webrtc::SessionDescriptionInterface *desc) {
-	// serialize this offer and send it to the remote peer:
-	std::string sdp;
-	desc->ToString(&sdp);
-	parent->queue_signal("session_description_created", 2, desc->type().c_str(), sdp.c_str());
-}
+#ifdef GDNATIVE_WEBRTC
+#define OK Error::OK
+#define FAILED Error::FAILED
+#define ERR_UNCONFIGURED Error::ERR_UNCONFIGURED
+#define ERR_INVALID_PARAMETER Error::ERR_INVALID_PARAMETER
+#endif
 
 void WebRTCLibPeerConnection::initialize_signaling() {
-	if (signaling_thread.get() == nullptr) {
-		signaling_thread = rtc::Thread::Create();
-	}
-	signaling_thread->Start();
+#ifdef DEBUG_ENABLED
+	rtc::InitLogger(rtc::LogLevel::Debug);
+#endif
 }
 
 void WebRTCLibPeerConnection::deinitialize_signaling() {
-	if (signaling_thread.get() != nullptr) {
-		signaling_thread->Stop();
-	}
 }
 
-godot_error _parse_ice_server(webrtc::PeerConnectionInterface::RTCConfiguration &r_config, godot::Dictionary p_server) {
-	godot::Variant v;
-	webrtc::PeerConnectionInterface::IceServer ice_server;
-	godot::String url;
-
-	ERR_FAIL_COND_V(!p_server.has("urls"), GODOT_ERR_INVALID_PARAMETER);
+Error WebRTCLibPeerConnection::_parse_ice_server(rtc::Configuration &r_config, Dictionary p_server) {
+	ERR_FAIL_COND_V(!p_server.has("urls"), ERR_INVALID_PARAMETER);
 
 	// Parse mandatory URL
-	v = p_server["urls"];
-	if (v.get_type() == godot::Variant::STRING) {
-		url = v;
-		ice_server.urls.push_back(url.utf8().get_data());
-	} else if (v.get_type() == godot::Variant::ARRAY) {
-		godot::Array names = v;
-		for (int j = 0; j < names.size(); j++) {
-			v = names[j];
-			ERR_FAIL_COND_V(v.get_type() != godot::Variant::STRING, GODOT_ERR_INVALID_PARAMETER);
-			url = v;
-			ice_server.urls.push_back(url.utf8().get_data());
-		}
+	Array urls;
+	Variant urls_var = p_server["urls"];
+	if (urls_var.get_type() == Variant::STRING) {
+		urls.push_back(urls_var);
+	} else if (urls_var.get_type() == Variant::ARRAY) {
+		urls = urls_var;
 	} else {
-		ERR_FAIL_V(GODOT_ERR_INVALID_PARAMETER);
+		ERR_FAIL_V(ERR_INVALID_PARAMETER);
 	}
 	// Parse credentials (only meaningful for TURN, only support password)
-	if (p_server.has("username") && (v = p_server["username"]) && v.get_type() == godot::Variant::STRING) {
-		ice_server.username = (v.operator godot::String()).utf8().get_data();
+	String username;
+	String credential;
+	if (p_server.has("username") && p_server["username"].get_type() == Variant::STRING) {
+		username = p_server["username"];
 	}
-	if (p_server.has("credential") && (v = p_server["credential"]) && v.get_type() == godot::Variant::STRING) {
-		ice_server.password = (v.operator godot::String()).utf8().get_data();
+	if (p_server.has("credential") && p_server["credential"].get_type() == Variant::STRING) {
+		credential = p_server["credential"];
 	}
-
-	r_config.servers.push_back(ice_server);
-	return GODOT_OK;
+	for (int i = 0; i < urls.size(); i++) {
+		rtc::IceServer srv(urls[i].operator String().utf8().get_data());
+		srv.username = username.utf8().get_data();
+		srv.password = credential.utf8().get_data();
+		r_config.iceServers.push_back(srv);
+	}
+	return OK;
 }
 
-godot_error _parse_channel_config(webrtc::DataChannelInit &r_config, godot::Dictionary p_dict) {
-	godot::Variant v;
-#define _SET_N(PROP, PNAME, TYPE) if (p_dict.has(#PROP)) { v = p_dict[#PROP]; if(v.get_type() == godot::Variant::TYPE) r_config.PNAME = v; }
-#define _SET(PROP, TYPE) _SET_N(PROP, PROP, TYPE)
-	_SET(negotiated, BOOL);
-	_SET(id, INT);
-	_SET_N(maxPacketLifeTime, maxRetransmitTime, INT);
-	_SET(maxRetransmits, INT);
-	_SET(ordered, BOOL);
-#undef _SET
-	if (p_dict.has("protocol") && (v = p_dict["protocol"]) && v.get_type() == godot::Variant::STRING) {
-		r_config.protocol = v.operator godot::String().utf8().get_data();
+Error WebRTCLibPeerConnection::_parse_channel_config(rtc::DataChannelInit &r_config, const Dictionary &p_dict) {
+	Variant nil;
+	Variant v;
+	if (p_dict.has("negotiated")) {
+		r_config.negotiated = p_dict["negotiated"].operator bool();
 	}
-
-	// ID makes sense only when negotiated is true (and must be set in that case)
-	ERR_FAIL_COND_V(r_config.negotiated ? r_config.id == -1 : r_config.id != -1, GODOT_ERR_INVALID_PARAMETER);
-	// Only one of maxRetransmits and maxRetransmitTime can be set on a channel.
-	ERR_FAIL_COND_V(r_config.maxRetransmits && r_config.maxRetransmitTime, GODOT_ERR_INVALID_PARAMETER);
-	return GODOT_OK;
+	if (p_dict.has("id")) {
+		r_config.id = uint16_t(p_dict["id"].operator int32_t());
+	}
+	// If negotiated it must have an ID, and ID only makes sense when negotiated.
+	ERR_FAIL_COND_V(r_config.negotiated != r_config.id.has_value(), ERR_INVALID_PARAMETER);
+	// Channels cannot be both time-constrained and retry-constrained.
+	ERR_FAIL_COND_V(p_dict.has("maxPacketLifeTime") && p_dict.has("maxRetransmits"), ERR_INVALID_PARAMETER);
+	if (p_dict.has("maxPacketLifeTime")) {
+		r_config.reliability.type = rtc::Reliability::Type::Timed;
+		r_config.reliability.rexmit = std::chrono::milliseconds(p_dict["maxPacketLifeTime"].operator int32_t());
+	} else if (p_dict.has("maxRetransmits")) {
+		r_config.reliability.type = rtc::Reliability::Type::Rexmit;
+		r_config.reliability.rexmit = p_dict["maxRetransmits"].operator int32_t();
+	}
+	if (p_dict.has("ordered") && p_dict["ordered"].operator bool() == false) {
+		r_config.reliability.unordered = true;
+	}
+	if (p_dict.has("protocol")) {
+		r_config.protocol = p_dict["protocol"].operator String().utf8().get_data();
+	}
+	return OK;
 }
 
-WebRTCLibPeerConnection::ConnectionState WebRTCLibPeerConnection::get_connection_state() const {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, STATE_CLOSED);
+WebRTCPeerConnection::ConnectionState WebRTCLibPeerConnection::_get_connection_state() const {
+	ERR_FAIL_COND_V(peer_connection == nullptr, STATE_CLOSED);
 
-	webrtc::PeerConnectionInterface::IceConnectionState state = peer_connection->ice_connection_state();
-	switch(state) {
-		case webrtc::PeerConnectionInterface::kIceConnectionNew:
+	rtc::PeerConnection::State state = peer_connection->state();
+	switch (state) {
+		case rtc::PeerConnection::State::New:
 			return STATE_NEW;
-		case webrtc::PeerConnectionInterface::kIceConnectionChecking:
+		case rtc::PeerConnection::State::Connecting:
 			return STATE_CONNECTING;
-		case webrtc::PeerConnectionInterface::kIceConnectionConnected:
+		case rtc::PeerConnection::State::Connected:
 			return STATE_CONNECTED;
-		case webrtc::PeerConnectionInterface::kIceConnectionCompleted:
-			return STATE_CONNECTED;
-		case webrtc::PeerConnectionInterface::kIceConnectionFailed:
-			return STATE_FAILED;
-		case webrtc::PeerConnectionInterface::kIceConnectionDisconnected:
+		case rtc::PeerConnection::State::Disconnected:
 			return STATE_DISCONNECTED;
-		case webrtc::PeerConnectionInterface::kIceConnectionClosed:
-			return STATE_CLOSED;
+		case rtc::PeerConnection::State::Failed:
+			return STATE_FAILED;
 		default:
 			return STATE_CLOSED;
 	}
 }
 
-godot_error WebRTCLibPeerConnection::initialize(const godot_dictionary *p_config) {
-	webrtc::PeerConnectionInterface::RTCConfiguration config;
-	godot::Dictionary d = *(godot::Dictionary *)p_config;
-	godot::Variant v;
-	if (d.has("iceServers") && (v = d["iceServers"]) && v.get_type() == godot::Variant::ARRAY) {
-		godot::Array servers = v;
+WebRTCLibPeerConnection::GatheringState WebRTCLibPeerConnection::_get_gathering_state() const {
+	ERR_FAIL_COND_V(peer_connection == nullptr, GATHERING_STATE_NEW);
+
+	rtc::PeerConnection::GatheringState state = peer_connection->gatheringState();
+	switch (state) {
+		case rtc::PeerConnection::GatheringState::New:
+			return GATHERING_STATE_NEW;
+		case rtc::PeerConnection::GatheringState::InProgress:
+			return GATHERING_STATE_GATHERING;
+		case rtc::PeerConnection::GatheringState::Complete:
+			return GATHERING_STATE_COMPLETE;
+		default:
+			return GATHERING_STATE_NEW;
+	}
+}
+
+WebRTCLibPeerConnection::SignalingState WebRTCLibPeerConnection::_get_signaling_state() const {
+	ERR_FAIL_COND_V(peer_connection == nullptr, SIGNALING_STATE_CLOSED);
+
+	rtc::PeerConnection::SignalingState state = peer_connection->signalingState();
+	switch (state) {
+		case rtc::PeerConnection::SignalingState::Stable:
+			return SIGNALING_STATE_STABLE;
+		case rtc::PeerConnection::SignalingState::HaveLocalOffer:
+			return SIGNALING_STATE_HAVE_LOCAL_OFFER;
+		case rtc::PeerConnection::SignalingState::HaveRemoteOffer:
+			return SIGNALING_STATE_HAVE_REMOTE_OFFER;
+		case rtc::PeerConnection::SignalingState::HaveLocalPranswer:
+			return SIGNALING_STATE_HAVE_LOCAL_PRANSWER;
+		case rtc::PeerConnection::SignalingState::HaveRemotePranswer:
+			return SIGNALING_STATE_HAVE_REMOTE_PRANSWER;
+		default:
+			return SIGNALING_STATE_CLOSED;
+	}
+}
+
+Error WebRTCLibPeerConnection::_initialize(const Dictionary &p_config) {
+	rtc::Configuration config = {};
+	if (p_config.has("iceServers") && p_config["iceServers"].get_type() == Variant::ARRAY) {
+		Array servers = p_config["iceServers"];
 		for (int i = 0; i < servers.size(); i++) {
-			v = servers[i];
-			ERR_FAIL_COND_V(v.get_type() != godot::Variant::DICTIONARY, GODOT_ERR_INVALID_PARAMETER);
-			godot_error err;
-			godot::Dictionary server = v;
-			err = _parse_ice_server(config, server);
-			ERR_FAIL_COND_V(err != GODOT_OK, err);
+			ERR_FAIL_COND_V(servers[i].get_type() != Variant::DICTIONARY, ERR_INVALID_PARAMETER);
+			Dictionary server = servers[i];
+			Error err = _parse_ice_server(config, server);
+			ERR_FAIL_COND_V(err != OK, FAILED);
 		}
 	}
 	return _create_pc(config);
 }
 
-godot_object *WebRTCLibPeerConnection::create_data_channel(const char *p_channel, const godot_dictionary *p_channel_config) {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, NULL);
+#if defined(GDNATIVE_WEBRTC) || defined(GDEXTENSION_WEBRTC_40)
+Object *WebRTCLibPeerConnection::_create_data_channel(const String &p_channel, const Dictionary &p_channel_config) try {
+#else
+Ref<WebRTCDataChannel> WebRTCLibPeerConnection::_create_data_channel(const String &p_channel, const Dictionary &p_channel_config) try {
+#endif
+	ERR_FAIL_COND_V(!peer_connection, nullptr);
 
 	// Read config from dictionary
-	webrtc::DataChannelInit config;
-	godot::Dictionary d = *(godot::Dictionary *)p_channel_config;
-	godot_error err = _parse_channel_config(config, d);
-	ERR_FAIL_COND_V(err != GODOT_OK, NULL);
+	rtc::DataChannelInit config;
 
-	WebRTCLibDataChannel *wrapper = WebRTCLibDataChannel::new_data_channel(peer_connection->CreateDataChannel(p_channel, &config));
-	ERR_FAIL_COND_V(wrapper == NULL, NULL);
-	return wrapper->_owner;
+	Error err = _parse_channel_config(config, p_channel_config);
+	ERR_FAIL_COND_V(err != OK, nullptr);
+
+	std::shared_ptr<rtc::DataChannel> ch = peer_connection->createDataChannel(p_channel.utf8().get_data(), config);
+	ERR_FAIL_COND_V(ch == nullptr, nullptr);
+
+	WebRTCLibDataChannel *wrapper = WebRTCLibDataChannel::new_data_channel(ch, ch->id().has_value());
+	ERR_FAIL_COND_V(wrapper == nullptr, nullptr);
+	return wrapper;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(nullptr);
 }
 
-godot_error WebRTCLibPeerConnection::create_offer() {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, GODOT_ERR_UNCONFIGURED);
-	peer_connection->CreateOffer(ptr_csdo, webrtc::PeerConnectionInterface::RTCOfferAnswerOptions());
-	return GODOT_OK;
+Error WebRTCLibPeerConnection::_create_offer() try {
+	ERR_FAIL_COND_V(!peer_connection, ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(_get_connection_state() != STATE_NEW, FAILED);
+	peer_connection->setLocalDescription(rtc::Description::Type::Offer);
+	return OK;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(FAILED);
 }
 
-#define _MAKE_DESC(TYPE, SDP) webrtc::CreateSessionDescription((godot::String(TYPE) == godot::String("offer") ? webrtc::SdpType::kOffer : webrtc::SdpType::kAnswer), SDP)
-godot_error WebRTCLibPeerConnection::set_remote_description(const char *type, const char *sdp) {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, GODOT_ERR_UNCONFIGURED);
-	std::unique_ptr<webrtc::SessionDescriptionInterface> desc = _MAKE_DESC(type, sdp);
-	if (desc->GetType() == webrtc::SdpType::kOffer) {
-		ptr_ssdo->make_offer = true;
+Error WebRTCLibPeerConnection::_set_remote_description(const String &p_type, const String &p_sdp) try {
+	ERR_FAIL_COND_V(!peer_connection, ERR_UNCONFIGURED);
+	std::string sdp(p_sdp.utf8().get_data());
+	std::string type(p_type.utf8().get_data());
+	rtc::Description desc(sdp, type);
+	peer_connection->setRemoteDescription(desc);
+	// Automatically create the answer.
+	if (p_type == String("offer")) {
+		peer_connection->setLocalDescription(rtc::Description::Type::Answer);
 	}
-	peer_connection->SetRemoteDescription(ptr_ssdo, desc.release());
-	return GODOT_OK;
+	return OK;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(FAILED);
 }
 
-godot_error WebRTCLibPeerConnection::set_local_description(const char *type, const char *sdp) {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, GODOT_ERR_UNCONFIGURED);
-	std::unique_ptr<webrtc::SessionDescriptionInterface> desc = _MAKE_DESC(type, sdp);
-	peer_connection->SetLocalDescription(ptr_ssdo, desc.release());
-	return GODOT_OK;
-}
-#undef _MAKE_DESC
-
-godot_error WebRTCLibPeerConnection::add_ice_candidate(const char *sdpMidName, int sdpMlineIndexName, const char *sdpName) {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, GODOT_ERR_UNCONFIGURED);
-
-	webrtc::SdpParseError *error = nullptr;
-	webrtc::IceCandidateInterface *candidate = webrtc::CreateIceCandidate(
-			sdpMidName,
-			sdpMlineIndexName,
-			sdpName,
-			error);
-
-	ERR_FAIL_COND_V(error || !candidate, GODOT_ERR_INVALID_PARAMETER);
-	ERR_FAIL_COND_V(!peer_connection->AddIceCandidate(candidate), GODOT_FAILED);
-
-	return GODOT_OK;
+Error WebRTCLibPeerConnection::_set_local_description(const String &p_type, const String &p_sdp) {
+	ERR_FAIL_COND_V(!peer_connection, ERR_UNCONFIGURED);
+	// XXX Library quirk. It doesn't seem possible to create offers/answers without setting the local description.
+	// Ignore this call for now to avoid crash (it's already set automatically!).
+	// peer_connection->setLocalDescription(p_type == String("offer") ? rtc::Description::Type::Offer : rtc::Description::Type::Answer);
+	return OK;
 }
 
-godot_error WebRTCLibPeerConnection::poll() {
-	ERR_FAIL_COND_V(peer_connection.get() == nullptr, GODOT_ERR_UNCONFIGURED);
+#ifdef GDNATIVE_WEBRTC
+Error WebRTCLibPeerConnection::_add_ice_candidate(const String &sdpMidName, int64_t sdpMlineIndexName, const String &sdpName) try {
+#else
+Error WebRTCLibPeerConnection::_add_ice_candidate(const String &sdpMidName, int32_t sdpMlineIndexName, const String &sdpName) try {
+#endif
+	ERR_FAIL_COND_V(!peer_connection, ERR_UNCONFIGURED);
+	rtc::Candidate candidate(sdpName.utf8().get_data(), sdpMidName.utf8().get_data());
+	peer_connection->addRemoteCandidate(candidate);
+	return OK;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(FAILED);
+}
+
+Error WebRTCLibPeerConnection::_poll() {
+	ERR_FAIL_COND_V(!peer_connection, ERR_UNCONFIGURED);
 
 	while (!signal_queue.empty()) {
 		mutex_signal_queue->lock();
@@ -210,68 +262,83 @@ godot_error WebRTCLibPeerConnection::poll() {
 		mutex_signal_queue->unlock();
 		signal.emit(this);
 	}
-	return GODOT_OK;
+	return OK;
 }
 
-void WebRTCLibPeerConnection::close() {
-	if (peer_connection.get() != nullptr) {
-		peer_connection->Close();
+void WebRTCLibPeerConnection::_close() {
+	if (peer_connection != nullptr) {
+		try {
+			peer_connection->close();
+		} catch (...) {
+		}
 	}
-	peer_connection = nullptr;
-	while(!signal_queue.empty()) {
+
+	while (!signal_queue.empty()) {
 		signal_queue.pop();
 	}
 }
 
-void WebRTCLibPeerConnection::_register_methods() {
-}
-
 void WebRTCLibPeerConnection::_init() {
+#ifdef GDNATIVE_WEBRTC
 	register_interface(&interface);
-
-	// initialize variables:
+#endif
 	mutex_signal_queue = new std::mutex;
 
-	// create a PeerConnectionFactoryInterface:
-	webrtc::PeerConnectionFactoryDependencies deps;
-
-	ERR_FAIL_COND(signaling_thread.get() == nullptr);
-	deps.signaling_thread = signaling_thread.get();
-	pc_factory = webrtc::CreateModularPeerConnectionFactory(std::move(deps));
-
-	// Create peer connection with default configuration.
-	webrtc::PeerConnectionInterface::RTCConfiguration config;
-	_create_pc(config);
+	_initialize(Dictionary());
 }
 
-godot_error WebRTCLibPeerConnection::_create_pc(webrtc::PeerConnectionInterface::RTCConfiguration &config) {
-	ERR_FAIL_COND_V(pc_factory.get() == nullptr, GODOT_ERR_BUG);
-	peer_connection = nullptr;
-	peer_connection = pc_factory->CreatePeerConnection(config, nullptr, nullptr, &pco);
-	if (peer_connection.get() == nullptr) { // PeerConnection couldn't be created. Fail the method call.
-		ERR_PRINT("PeerConnection could not be created");
-		return GODOT_FAILED;
-	}
-	return GODOT_OK;
+Error WebRTCLibPeerConnection::_create_pc(rtc::Configuration &r_config) try {
+	// Prevents libdatachannel from automatically creating offers.
+	r_config.disableAutoNegotiation = true;
+
+	peer_connection = std::make_shared<rtc::PeerConnection>(r_config);
+	ERR_FAIL_COND_V(!peer_connection, FAILED);
+
+	// Binding this should be fine as long as we call close when going out of scope.
+	peer_connection->onLocalDescription([this](rtc::Description description) {
+		String type = description.type() == rtc::Description::Type::Offer ? "offer" : "answer";
+		queue_signal("session_description_created", 2, type, String(std::string(description).c_str()));
+	});
+	peer_connection->onLocalCandidate([this](rtc::Candidate candidate) {
+		queue_signal("ice_candidate_created", 3, String(candidate.mid().c_str()), 0, String(candidate.candidate().c_str()));
+	});
+	peer_connection->onDataChannel([this](std::shared_ptr<rtc::DataChannel> channel) {
+		queue_signal("data_channel_received", 1, WebRTCLibDataChannel::new_data_channel(channel, false));
+	});
+	/*
+	peer_connection->onStateChange([](rtc::PeerConnection::State state) {
+		std::cout << "[State: " << state << "]" << std::endl;
+	});
+
+	peer_connection->onGatheringStateChange([](rtc::PeerConnection::GatheringState state) {
+		std::cout << "[Gathering State: " << state << "]" << std::endl;
+	});
+	*/
+	return OK;
+} catch (const std::exception &e) {
+	ERR_PRINT(e.what());
+	ERR_FAIL_V(FAILED);
 }
 
-WebRTCLibPeerConnection::WebRTCLibPeerConnection() :
-		pco(this),
-		ptr_csdo(new rtc::RefCountedObject<GodotCSDO>(this)),
-		ptr_ssdo(new rtc::RefCountedObject<GodotSSDO>(this)) {
+WebRTCLibPeerConnection::WebRTCLibPeerConnection() {
+#ifndef GDNATIVE_WEBRTC
+	_init();
+#endif
 }
 
 WebRTCLibPeerConnection::~WebRTCLibPeerConnection() {
+#ifdef GDNATIVE_WEBRTC
 	if (_owner) {
-		register_interface(NULL);
+		register_interface(nullptr);
 	}
-	close();
+#endif
+	_close();
 	delete mutex_signal_queue;
 }
 
-void WebRTCLibPeerConnection::queue_signal(godot::String p_name, int p_argc, const godot::Variant &p_arg1, const godot::Variant &p_arg2, const godot::Variant &p_arg3) {
+void WebRTCLibPeerConnection::queue_signal(String p_name, int p_argc, const Variant &p_arg1, const Variant &p_arg2, const Variant &p_arg3) {
 	mutex_signal_queue->lock();
-	const godot::Variant argv[3] = { p_arg1, p_arg2, p_arg3 };
+	const Variant argv[3] = { p_arg1, p_arg2, p_arg3 };
 	signal_queue.push(Signal(p_name, p_argc, argv));
 	mutex_signal_queue->unlock();
 }

src/WebRTCLibPeerConnection.hpp

@@ -1,102 +1,109 @@
+/**************************************************************************/
+/*  WebRTCLibPeerConnection.hpp                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #ifndef WEBRTC_PEER_H
 #define WEBRTC_PEER_H
 
+#ifdef GDNATIVE_WEBRTC
 #include <Godot.hpp> // Godot.hpp must go first, or windows builds breaks
 
-#include "api/peer_connection_interface.h" // interface for all things needed from WebRTC
-#include "media/base/media_engine.h" // needed for CreateModularPeerConnectionFactory
-#include <mutex>
-
 #include "net/WebRTCPeerConnectionNative.hpp"
+#define WebRTCPeerConnectionExtension WebRTCPeerConnectionNative
+#if !defined(GDCLASS)
+#define GDCLASS(arg1, arg2) GODOT_CLASS(arg1, arg2)
+#endif
+#else
+#include <godot_cpp/core/binder_common.hpp>
+
+#include <godot_cpp/classes/global_constants_binds.hpp>
+#include <godot_cpp/classes/web_rtc_peer_connection_extension.hpp>
+#endif
+
+#include "rtc/rtc.hpp"
+
+#include <mutex>
+#include <queue>
 
 namespace godot_webrtc {
 
-class WebRTCLibPeerConnection : public WebRTCPeerConnectionNative {
-	GODOT_CLASS(WebRTCLibPeerConnection, WebRTCPeerConnectionNative);
+class WebRTCLibPeerConnection : public godot::WebRTCPeerConnectionExtension {
+	GDCLASS(WebRTCLibPeerConnection, WebRTCPeerConnectionExtension);
 
 private:
-	godot_error _create_pc(webrtc::PeerConnectionInterface::RTCConfiguration &config);
+	std::shared_ptr<rtc::PeerConnection> peer_connection = nullptr;
+	godot::Array candidates;
+
+	godot::Error _create_pc(rtc::Configuration &r_config);
+	godot::Error _parse_ice_server(rtc::Configuration &r_config, godot::Dictionary p_server);
+	godot::Error _parse_channel_config(rtc::DataChannelInit &r_config, const godot::Dictionary &p_dict);
+
+protected:
+	static void _bind_methods() {}
 
-	static std::unique_ptr<rtc::Thread> signaling_thread;
 public:
-	static void _register_methods();
+	static void _register_methods() {}
 	static void initialize_signaling();
 	static void deinitialize_signaling();
 
 	void _init();
 
-	ConnectionState get_connection_state() const;
+	ConnectionState _get_connection_state() const override;
+	GatheringState _get_gathering_state() const override;
+	SignalingState _get_signaling_state() const override;
 
-	godot_error initialize(const godot_dictionary *p_config);
-	godot_object *create_data_channel(const char *p_channel, const godot_dictionary *p_channel_config);
-	godot_error create_offer();
-	godot_error set_remote_description(const char *type, const char *sdp);
-	godot_error set_local_description(const char *type, const char *sdp);
-	godot_error add_ice_candidate(const char *sdpMidName, int sdpMlineIndexName, const char *sdpName);
-	godot_error poll();
-	void close();
+	godot::Error _initialize(const godot::Dictionary &p_config) override;
+#if defined(GDNATIVE_WEBRTC) || defined(GDEXTENSION_WEBRTC_40)
+	godot::Object *_create_data_channel(const godot::String &p_channel, const godot::Dictionary &p_channel_config) override;
+#else
+	godot::Ref<godot::WebRTCDataChannel> _create_data_channel(const godot::String &p_channel, const godot::Dictionary &p_channel_config) override;
+#endif
+	godot::Error _create_offer() override;
+	godot::Error _set_remote_description(const godot::String &type, const godot::String &sdp) override;
+	godot::Error _set_local_description(const godot::String &type, const godot::String &sdp) override;
+#ifdef GDNATIVE_WEBRTC
+	godot::Error _add_ice_candidate(const godot::String &sdpMidName, int64_t sdpMlineIndexName, const godot::String &sdpName) override;
+#else
+	godot::Error _add_ice_candidate(const godot::String &sdpMidName, int32_t sdpMlineIndexName, const godot::String &sdpName) override;
+#endif
+	godot::Error _poll() override;
+	void _close() override;
 
 	WebRTCLibPeerConnection();
 	~WebRTCLibPeerConnection();
 
-	/* helper functions */
 private:
-	void queue_signal(godot::String p_name, int p_argc, const godot::Variant &p_arg1 = godot::Variant(), const godot::Variant &p_arg2 = godot::Variant(), const godot::Variant &p_arg3 = godot::Variant());
-	void queue_packet(uint8_t *, int);
-
-	/** PeerConnectionObserver callback functions **/
-	class GodotPCO : public webrtc::PeerConnectionObserver {
-	public:
-		WebRTCLibPeerConnection *parent;
-
-		GodotPCO(WebRTCLibPeerConnection *p_parent) {
-			parent = p_parent;
-		}
-		void OnIceCandidate(const webrtc::IceCandidateInterface *candidate) override;
-
-		void OnSignalingChange(webrtc::PeerConnectionInterface::SignalingState new_state) override {}
-		void OnAddStream(rtc::scoped_refptr<webrtc::MediaStreamInterface> stream) override {}
-		void OnRemoveStream(rtc::scoped_refptr<webrtc::MediaStreamInterface> stream) override {}
-		void OnDataChannel(rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel) override {}
-		void OnRenegotiationNeeded() override {}
-		void OnIceConnectionChange(webrtc::PeerConnectionInterface::IceConnectionState new_state) override {}
-		void OnIceGatheringChange(webrtc::PeerConnectionInterface::IceGatheringState new_state) override {}
-	};
-
-	/** CreateSessionDescriptionObserver callback functions **/
-	class GodotCSDO : public webrtc::CreateSessionDescriptionObserver {
-	public:
-		WebRTCLibPeerConnection *parent = nullptr;
-
-		GodotCSDO(WebRTCLibPeerConnection *p_parent) {
-			parent = p_parent;
-		}
-		void OnSuccess(webrtc::SessionDescriptionInterface *desc) override;
-		void OnFailure(webrtc::RTCError error) override {
-			ERR_PRINT(godot::String(error.message()));
-		}
-	};
-
-	/** SetSessionDescriptionObserver callback functions **/
-	class GodotSSDO : public webrtc::SetSessionDescriptionObserver {
-	public:
-		WebRTCLibPeerConnection *parent = nullptr;
-		bool make_offer = false;
-
-		GodotSSDO(WebRTCLibPeerConnection *p_parent) {
-			parent = p_parent;
-		}
-		void OnSuccess() override;
-		void OnFailure(webrtc::RTCError error) override {
-			make_offer = false;
-			ERR_PRINT(godot::String(error.message()));
-		}
-	};
-
 	class Signal {
 		godot::String method;
 		godot::Variant argv[3];
 		int argc = 0;
+
 	public:
 		Signal(godot::String p_method, int p_argc, const godot::Variant *p_argv) {
 			method = p_method;
@@ -119,15 +126,10 @@ private:
 		}
 	};
 
-	GodotPCO pco;
-	rtc::scoped_refptr<GodotSSDO> ptr_ssdo;
-	rtc::scoped_refptr<GodotCSDO> ptr_csdo;
-
 	std::mutex *mutex_signal_queue = nullptr;
 	std::queue<Signal> signal_queue;
 
-	rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface> pc_factory;
-	rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection;
+	void queue_signal(godot::String p_name, int p_argc, const godot::Variant &p_arg1 = godot::Variant(), const godot::Variant &p_arg2 = godot::Variant(), const godot::Variant &p_arg3 = godot::Variant());
 };
 
 } // namespace godot_webrtc

src/init_gdextension.cpp

@@ -0,0 +1,82 @@
+/**************************************************************************/
+/*  init_gdextension.cpp                                                  */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#include <gdextension_interface.h>
+
+#include <godot_cpp/core/class_db.hpp>
+#include <godot_cpp/core/defs.hpp>
+#include <godot_cpp/godot.hpp>
+
+#include "WebRTCLibDataChannel.hpp"
+#include "WebRTCLibPeerConnection.hpp"
+
+#ifdef _WIN32
+// See upstream godot-cpp GH-771.
+#undef GDN_EXPORT
+#define GDN_EXPORT __declspec(dllexport)
+#endif
+
+using namespace godot;
+using namespace godot_webrtc;
+
+void register_webrtc_extension_types(ModuleInitializationLevel p_level) {
+	if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
+		return;
+	}
+
+	WebRTCLibPeerConnection::initialize_signaling();
+	godot::ClassDB::register_class<WebRTCLibDataChannel>();
+	godot::ClassDB::register_class<WebRTCLibPeerConnection>();
+	WebRTCPeerConnection::set_default_extension("WebRTCLibPeerConnection");
+}
+
+void unregister_webrtc_extension_types(ModuleInitializationLevel p_level) {
+	if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
+		return;
+	}
+
+	WebRTCLibPeerConnection::deinitialize_signaling();
+}
+
+extern "C" {
+#ifdef GDEXTENSION_WEBRTC_40
+GDExtensionBool GDE_EXPORT webrtc_extension_init(const GDExtensionInterface *p_interface, const GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization) {
+#else
+GDExtensionBool GDE_EXPORT webrtc_extension_init(const GDExtensionInterfaceGetProcAddress p_interface, const GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization) {
+#endif
+	GDExtensionBinding::InitObject init_obj(p_interface, p_library, r_initialization);
+
+	init_obj.register_initializer(register_webrtc_extension_types);
+	init_obj.register_terminator(unregister_webrtc_extension_types);
+	init_obj.set_minimum_library_initialization_level(MODULE_INITIALIZATION_LEVEL_SCENE);
+
+	return init_obj.init();
+}
+}

src/init_gdnative.cpp

@@ -1,9 +1,45 @@
+/**************************************************************************/
+/*  init_gdnative.cpp                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #include "WebRTCLibDataChannel.hpp"
 #include "WebRTCLibPeerConnection.hpp"
 #include "net/WebRTCPeerConnectionNative.hpp"
 #include <gdnative_api_struct.gen.h>
 #include <net/godot_net.h>
 
+#ifdef _WIN32
+// See upstream godot GH-62173.
+#undef GDN_EXPORT
+#define GDN_EXPORT __declspec(dllexport)
+#endif
+
 /* Singleton */
 static bool _singleton = false;
 static const godot_object *_singleton_lib = NULL;
@@ -34,21 +70,21 @@ godot_error create_peer_connection_wp(godot_object *out) {
 	_singleton_api->godot_string_destroy(&s);
 
 	// Bind script to Object
-        const void *args3[] = { (void *)script };
+	const void *args3[] = { (void *)script };
 	_singleton_api->godot_method_bind_ptrcall(_set_script_mb, out, args3, nullptr);
 
 	return GODOT_OK;
 }
 
 godot_net_webrtc_library library = {
-	{3, 2},
+	{ 3, 2 },
 	&unregistered,
 	&create_peer_connection_wp,
 	NULL,
 };
 
 extern "C" void GDN_EXPORT godot_gdnative_singleton() {
-	if (WebRTCPeerConnectionNative::_net_api) {
+	if (godot::WebRTCPeerConnectionNative::_net_api) {
 		ERR_FAIL_COND(!godot::gdnlib);
 		_singleton_lib = godot::gdnlib;
 		ERR_FAIL_COND(!godot::api);
@@ -62,7 +98,7 @@ extern "C" void GDN_EXPORT godot_gdnative_singleton() {
 		_set_library_mb = godot::api->godot_method_bind_get_method("NativeScript", "set_library");
 		ERR_FAIL_COND(!_set_library_mb);
 		// If registration is successful _singleton will be set to true
-		_singleton = WebRTCPeerConnectionNative::_net_api->godot_net_set_webrtc_library(&library) == GODOT_OK;
+		_singleton = godot::WebRTCPeerConnectionNative::_net_api->godot_net_set_webrtc_library(&library) == GODOT_OK;
 		if (!_singleton)
 			ERR_PRINT("Failed initializing webrtc singleton library");
 	}
@@ -72,7 +108,6 @@ extern "C" void GDN_EXPORT godot_gdnative_singleton() {
 extern "C" void GDN_EXPORT godot_gdnative_init(godot_gdnative_init_options *o) {
 	const godot_gdnative_core_api_struct *api = o->api_struct;
 	for (int i = 0; i < api->num_extensions; i++) {
-
 		if (api->extensions[i]->type != GDNATIVE_EXT_NET)
 			continue;
 
@@ -82,7 +117,7 @@ extern "C" void GDN_EXPORT godot_gdnative_init(godot_gdnative_init_options *o) {
 			break;
 
 		if (net_api->next->version.major == 3 && net_api->next->version.minor == 2) {
-			WebRTCPeerConnectionNative::_net_api = (const godot_gdnative_ext_net_3_2_api_struct *)net_api->next;
+			godot::WebRTCPeerConnectionNative::_net_api = (const godot_gdnative_ext_net_3_2_api_struct *)net_api->next;
 		}
 	}
 
@@ -92,7 +127,7 @@ extern "C" void GDN_EXPORT godot_gdnative_init(godot_gdnative_init_options *o) {
 
 extern "C" void GDN_EXPORT godot_gdnative_terminate(godot_gdnative_terminate_options *o) {
 	if (_singleton) { // If we are the active singleton, unregister
-		WebRTCPeerConnectionNative::_net_api->godot_net_set_webrtc_library(NULL);
+		godot::WebRTCPeerConnectionNative::_net_api->godot_net_set_webrtc_library(NULL);
 	}
 	godot_webrtc::WebRTCLibPeerConnection::deinitialize_signaling();
 	godot::Godot::gdnative_terminate(o);

src/net/WebRTCDataChannelNative.cpp

@@ -1,6 +1,38 @@
+/**************************************************************************/
+/*  WebRTCDataChannelNative.cpp                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #include "WebRTCDataChannelNative.hpp"
 #include "net/WebRTCPeerConnectionNative.hpp"
 
+using namespace godot;
+
 void WebRTCDataChannelNative::register_interface(const godot_net_webrtc_data_channel *p_interface) {
 	ERR_FAIL_COND(!WebRTCPeerConnectionNative::_net_api);
 	WebRTCPeerConnectionNative::_net_api->godot_net_bind_webrtc_data_channel(_owner, p_interface);
@@ -24,69 +56,73 @@ WebRTCDataChannelNative::~WebRTCDataChannelNative() {
  * and you could use void *user for any kind of state struct pointer you have.
  */
 godot_error get_packet_wdc(void *user, const uint8_t **r_buffer, int *r_len) {
-	return ((WebRTCDataChannelNative *)user)->get_packet(r_buffer, r_len);
+	return (godot_error)(((WebRTCDataChannelNative *)user)->_get_packet(r_buffer, r_len));
 }
 
 godot_error put_packet_wdc(void *user, const uint8_t *p_buffer, int p_len) {
-	return ((WebRTCDataChannelNative *)user)->put_packet(p_buffer, p_len);
+	return (godot_error)(((WebRTCDataChannelNative *)user)->_put_packet(p_buffer, p_len));
 }
 
 godot_int get_available_packet_count_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_available_packet_count();
+	return ((WebRTCDataChannelNative *)user)->_get_available_packet_count();
 }
 
 godot_int get_max_packet_size_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_max_packet_size();
+	return ((WebRTCDataChannelNative *)user)->_get_max_packet_size();
 }
 
 void set_write_mode_wdc(void *user, godot_int write_mode) {
-	((WebRTCDataChannelNative *)user)->set_write_mode(write_mode);
+	((WebRTCDataChannelNative *)user)->_set_write_mode((godot::WebRTCDataChannel::WriteMode)write_mode);
 }
 
 godot_int get_write_mode_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_write_mode();
+	return ((WebRTCDataChannelNative *)user)->_get_write_mode();
 }
 
 bool was_string_packet_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->was_string_packet();
+	return ((WebRTCDataChannelNative *)user)->_was_string_packet();
 }
 
 godot_int get_ready_state_wdc(const void *user) {
-	return (godot_int)(((WebRTCDataChannelNative *)user)->get_ready_state());
+	return (godot_int)(((WebRTCDataChannelNative *)user)->_get_ready_state());
 }
 
 const char *get_label_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_label();
+	return ((WebRTCDataChannelNative *)user)->_get_label().utf8().get_data();
 }
 
 bool is_ordered_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->is_ordered();
+	return ((WebRTCDataChannelNative *)user)->_is_ordered();
 }
 
 int get_id_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_id();
+	return ((WebRTCDataChannelNative *)user)->_get_id();
 }
 
 int get_max_packet_life_time_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_max_packet_life_time();
+	return ((WebRTCDataChannelNative *)user)->_get_max_packet_life_time();
 }
 
 int get_max_retransmits_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_max_retransmits();
+	return ((WebRTCDataChannelNative *)user)->_get_max_retransmits();
 }
 
 const char *get_protocol_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->get_protocol();
+	return ((WebRTCDataChannelNative *)user)->_get_protocol().utf8().get_data();
 }
 
 bool is_negotiated_wdc(const void *user) {
-	return ((WebRTCDataChannelNative *)user)->is_negotiated();
+	return ((WebRTCDataChannelNative *)user)->_is_negotiated();
+}
+
+int get_buffered_amount_wdc(const void *user) {
+	return ((WebRTCDataChannelNative *)user)->_get_buffered_amount();
 }
 
 godot_error poll_wdc(void *user) {
-	return ((WebRTCDataChannelNative *)user)->poll();
+	return (godot_error)(((WebRTCDataChannelNative *)user)->_poll());
 }
 
 void close_wdc(void *user) {
-	((WebRTCDataChannelNative *)user)->close();
+	((WebRTCDataChannelNative *)user)->_close();
 }

src/net/WebRTCDataChannelNative.hpp

@@ -1,3 +1,33 @@
+/**************************************************************************/
+/*  WebRTCDataChannelNative.hpp                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #ifndef WEBRTC_DATA_CHANNEL_NATIVE
 #define WEBRTC_DATA_CHANNEL_NATIVE
 
@@ -24,13 +54,32 @@ int get_max_packet_life_time_wdc(const void *);
 int get_max_retransmits_wdc(const void *);
 const char *get_protocol_wdc(const void *);
 bool is_negotiated_wdc(const void *);
+int get_buffered_amount_wdc(const void *);
 godot_error poll_wdc(void *);
 void close_wdc(void *);
 
+#if GODOT_NET_WEBRTC_API_MAJOR == 3 && GODOT_NET_WEBRTC_API_MINOR < 4
+extern "C" {
+/* Extensions to WebRTCDataChannel */
+typedef struct {
+	int (*get_buffered_amount)(const void *);
+
+	void *next; /* For extension? */
+} godot_net_webrtc_data_channel_ext;
+}
+#endif
+
+namespace godot {
+
 class WebRTCDataChannelNative : public godot::WebRTCDataChannelGDNative {
 	GODOT_CLASS(WebRTCDataChannelNative, godot::WebRTCDataChannelGDNative);
 
 protected:
+	godot_net_webrtc_data_channel_ext interface_ext = {
+		&get_buffered_amount_wdc,
+		NULL,
+	};
+
 	godot_net_webrtc_data_channel interface = {
 		{ 3, 1 },
 		this,
@@ -54,7 +103,7 @@ protected:
 
 		&poll_wdc,
 		&close_wdc,
-		NULL,
+		&interface_ext,
 	};
 
 public:
@@ -63,29 +112,32 @@ public:
 	void _init();
 	void register_interface(const godot_net_webrtc_data_channel *interface);
 
-	virtual void set_write_mode(godot_int mode) = 0;
-	virtual godot_int get_write_mode() const = 0;
-	virtual bool was_string_packet() const = 0;
+	virtual void _set_write_mode(WriteMode mode) = 0;
+	virtual WriteMode _get_write_mode() const = 0;
+	virtual bool _was_string_packet() const = 0;
 
-	virtual ChannelState get_ready_state() const = 0;
-	virtual const char *get_label() const = 0;
-	virtual bool is_ordered() const = 0;
-	virtual int get_id() const = 0;
-	virtual int get_max_packet_life_time() const = 0;
-	virtual int get_max_retransmits() const = 0;
-	virtual const char *get_protocol() const = 0;
-	virtual bool is_negotiated() const = 0;
+	virtual ChannelState _get_ready_state() const = 0;
+	virtual godot::String _get_label() const = 0;
+	virtual bool _is_ordered() const = 0;
+	virtual int32_t _get_id() const = 0;
+	virtual int32_t _get_max_packet_life_time() const = 0;
+	virtual int32_t _get_max_retransmits() const = 0;
+	virtual godot::String _get_protocol() const = 0;
+	virtual bool _is_negotiated() const = 0;
+	virtual int32_t _get_buffered_amount() const = 0;
 
-	virtual godot_error poll() = 0;
-	virtual void close() = 0;
+	virtual godot::Error _poll() = 0;
+	virtual void _close() = 0;
 
 	/* PacketPeer */
-	virtual godot_error get_packet(const uint8_t **r_buffer, int *r_len) = 0;
-	virtual godot_error put_packet(const uint8_t *p_buffer, int p_len) = 0;
-	virtual godot_int get_available_packet_count() const = 0;
-	virtual godot_int get_max_packet_size() const = 0;
+	virtual godot::Error _get_packet(const uint8_t **r_buffer, int32_t *r_len) = 0;
+	virtual godot::Error _put_packet(const uint8_t *p_buffer, int32_t p_len) = 0;
+	virtual int32_t _get_available_packet_count() const = 0;
+	virtual int32_t _get_max_packet_size() const = 0;
 
 	~WebRTCDataChannelNative();
 };
 
+}; // namespace godot
+
 #endif // WEBRTC_DATA_CHANNEL_NATIVE

src/net/WebRTCPeerConnectionNative.cpp

@@ -1,5 +1,37 @@
+/**************************************************************************/
+/*  WebRTCPeerConnectionNative.cpp                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #include "WebRTCPeerConnectionNative.hpp"
 
+using namespace godot;
+
 const godot_gdnative_ext_net_3_2_api_struct *WebRTCPeerConnectionNative::_net_api = NULL;
 
 void WebRTCPeerConnectionNative::register_interface(const godot_net_webrtc_peer_connection *p_interface) {
@@ -25,19 +57,23 @@ WebRTCPeerConnectionNative::~WebRTCPeerConnectionNative() {
  * and you could use void *user for any kind of state struct pointer you have.
  */
 godot_int get_connection_state_wp(const void *user) {
-	return (godot_int)((WebRTCPeerConnectionNative *)user)->get_connection_state();
+	return (godot_int)((WebRTCPeerConnectionNative *)user)->_get_connection_state();
 }
 
 godot_error initialize_wp(void *user, const godot_dictionary *p_config) {
-	return ((WebRTCPeerConnectionNative *)user)->initialize(p_config);
+	return (godot_error)(((WebRTCPeerConnectionNative *)user)->_initialize(*(Dictionary *)p_config));
 }
 
 godot_object *create_data_channel_wp(void *user, const char *p_channel, const godot_dictionary *p_channel_config) {
-	return ((WebRTCPeerConnectionNative *)user)->create_data_channel(p_channel, p_channel_config);
+	Object *ptr = ((WebRTCPeerConnectionNative *)user)->_create_data_channel(p_channel, *(Dictionary *)p_channel_config);
+	if (ptr) {
+		return ptr->_owner;
+	}
+	return nullptr;
 }
 
 godot_error create_offer_wp(void *user) {
-	return ((WebRTCPeerConnectionNative *)user)->create_offer();
+	return (godot_error)(((WebRTCPeerConnectionNative *)user)->_create_offer());
 }
 
 godot_error create_answer_wp(void *user) {
@@ -45,21 +81,21 @@ godot_error create_answer_wp(void *user) {
 }
 
 godot_error set_remote_description_wp(void *user, const char *type, const char *sdp) {
-	return ((WebRTCPeerConnectionNative *)user)->set_remote_description(type, sdp);
+	return (godot_error)(((WebRTCPeerConnectionNative *)user)->_set_remote_description(type, sdp));
 }
 
 godot_error set_local_description_wp(void *user, const char *type, const char *sdp) {
-	return ((WebRTCPeerConnectionNative *)user)->set_local_description(type, sdp);
+	return (godot_error)(((WebRTCPeerConnectionNative *)user)->_set_local_description(type, sdp));
 }
 
 godot_error add_ice_candidate_wp(void *user, const char *sdpMidName, int sdpMlineIndexName, const char *sdpName) {
-	return ((WebRTCPeerConnectionNative *)user)->add_ice_candidate(sdpMidName, sdpMlineIndexName, sdpName);
+	return (godot_error)(((WebRTCPeerConnectionNative *)user)->_add_ice_candidate(sdpMidName, sdpMlineIndexName, sdpName));
 }
 
 godot_error poll_wp(void *user) {
-	return ((WebRTCPeerConnectionNative *)user)->poll();
+	return (godot_error)((WebRTCPeerConnectionNative *)user)->_poll();
 }
 
 void close_wp(void *user) {
-	((WebRTCPeerConnectionNative *)user)->close();
+	((WebRTCPeerConnectionNative *)user)->_close();
 }

src/net/WebRTCPeerConnectionNative.hpp

@@ -1,3 +1,33 @@
+/**************************************************************************/
+/*  WebRTCPeerConnectionNative.hpp                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
 #ifndef WEBRTC_PEER_NATIVE
 #define WEBRTC_PEER_NATIVE
 
@@ -20,6 +50,8 @@ godot_error add_ice_candidate_wp(void *, const char *, int, const char *);
 godot_error poll_wp(void *);
 void close_wp(void *);
 
+namespace godot {
+
 class WebRTCPeerConnectionNative : public godot::WebRTCPeerConnectionGDNative {
 	GODOT_CLASS(WebRTCPeerConnectionNative, godot::WebRTCPeerConnectionGDNative);
 
@@ -43,24 +75,43 @@ protected:
 	};
 
 public:
+	enum GatheringState {
+		GATHERING_STATE_NEW,
+		GATHERING_STATE_GATHERING,
+		GATHERING_STATE_COMPLETE,
+	};
+
+	enum SignalingState {
+		SIGNALING_STATE_STABLE,
+		SIGNALING_STATE_HAVE_LOCAL_OFFER,
+		SIGNALING_STATE_HAVE_REMOTE_OFFER,
+		SIGNALING_STATE_HAVE_LOCAL_PRANSWER,
+		SIGNALING_STATE_HAVE_REMOTE_PRANSWER,
+		SIGNALING_STATE_CLOSED,
+	};
+
 	static void _register_methods();
 	static const godot_gdnative_ext_net_3_2_api_struct *_net_api;
 
 	void _init();
 	void register_interface(const godot_net_webrtc_peer_connection *interface);
 
-	virtual ConnectionState get_connection_state() const = 0;
+	virtual ConnectionState _get_connection_state() const = 0;
+	virtual GatheringState _get_gathering_state() const = 0;
+	virtual SignalingState _get_signaling_state() const = 0;
 
-	virtual godot_error initialize(const godot_dictionary *p_config) = 0;
-	virtual godot_object *create_data_channel(const char *p_channel, const godot_dictionary *p_channel_config) = 0;
-	virtual godot_error create_offer() = 0;
-	virtual godot_error set_remote_description(const char *type, const char *sdp) = 0;
-	virtual godot_error set_local_description(const char *type, const char *sdp) = 0;
-	virtual godot_error add_ice_candidate(const char *sdpMidName, int sdpMlineIndexName, const char *sdpName) = 0;
-	virtual godot_error poll() = 0;
-	virtual void close() = 0;
+	virtual godot::Error _initialize(const godot::Dictionary &p_config) = 0;
+	virtual godot::Object *_create_data_channel(const godot::String &p_channel, const godot::Dictionary &p_channel_config) = 0;
+	virtual godot::Error _create_offer() = 0;
+	virtual godot::Error _set_remote_description(const godot::String &type, const godot::String &sdp) = 0;
+	virtual godot::Error _set_local_description(const godot::String &type, const godot::String &sdp) = 0;
+	virtual godot::Error _add_ice_candidate(const godot::String &sdpMidName, int64_t sdpMlineIndexName, const godot::String &sdpName) = 0;
+	virtual godot::Error _poll() = 0;
+	virtual void _close() = 0;
 
 	~WebRTCPeerConnectionNative();
 };
 
+}; // namespace godot
+
 #endif // WEBRTC_PEER_NATIVE

thirdparty/README.md

@@ -0,0 +1,82 @@
+# Third party libraries
+
+Please keep categories (`##` level) listed alphabetically and matching their
+respective folder names. Use two empty lines to separate categories for
+readability.
+
+
+## json
+
+- Upstream: https://github.com/nlohmann/json
+- Version: 3.10.5 (4f8fba14066156b73f1189a2b8bd568bde5284c5, 2022)
+- License: MIT
+
+Module location:
+
+- thirdparty/libdatachannel/deps/json
+
+
+## libdatachannel
+
+- Upstream: https://github.com/paullouisageneau/libdatachannel
+- Version: 0.18.5 (0522acdd3dd6af9451a1aa4cd47647172f879a5f, 2023)
+- License: MPL 2.0
+
+Module location:
+
+- thirdparty/libdatachannel
+
+
+# libjuice
+
+- Upstream: https://github.com/paullouisageneau/libjuice
+- Version: 1.2.3 (8c23cc88c6d41e5ccbc44ea0ad3d79b22cf02361, 2023)
+- License: MPL 2.0
+
+Module location:
+
+- thirdparty/libdatachannel/deps/libjuice
+
+
+## libsrtp
+
+- Upstream: https://github.com/cisco/libsrtp
+- Version: 2.5.0 (a566a9cfcd619e8327784aa7cff4a1276dc1e895, 2023)
+- License: BSD-3-Clause
+
+Module location:
+
+- thirdparty/libdatachannel/deps/libsrtp
+
+
+## openssl
+
+- Upstream: git://git.openssl.org/openssl.git
+- Version: 3.0.9 (de90e54bbe82e5be4fb9608b6f5c308bb837d355, 2023)
+- License: Apache 2.0
+
+Module location:
+
+- thirdparty/openssl
+
+
+## plog
+
+- Upstream: https://github.com/SergiusTheBest/plog
+- Version: git (d8461e9d473e59fbcc1f79eee021550dcf81e618, 2021)
+- License: MPL 2.0
+
+Module location:
+
+- thirdparty/libdatachannel/deps/plog
+
+
+## usrsctp
+
+- Upstream: https://github.com/sctplab/usrsctp
+- Version: git (7c31bd35c79ba67084ce029511193a19ceb97447, 2021)
+- License: BSD-3-Clause
+
+Module location:
+
+- thirdparty/libdatachannel/deps/usrsctp

tools/cmake.py

@@ -0,0 +1,135 @@
+import os, sys
+
+import SCons.Util
+import SCons.Builder
+import SCons.Action
+
+
+def cmake_default_flags(env):
+    if env.get("cmake_default_flags", ""):
+        return SCons.Util.CLVar(env["cmake_default_flags"])
+
+    config = {}
+
+    if "CC" in env:
+        config["CMAKE_C_COMPILER"] = env["CC"]
+    if "CXX" in env:
+        config["CMAKE_CXX_COMPILER"] = env["CXX"]
+
+    if env["platform"] == "android":
+        api = env["android_api_level"]
+        abi = {
+            "arm64": "arm64-v8a",
+            "arm32": "armeabi-v7a",
+            "x86_32": "x86",
+            "x86_64": "x86_64",
+        }[env["arch"]]
+        config["CMAKE_SYSTEM_NAME"] = "Android"
+        config["CMAKE_SYSTEM_VERSION"] = api
+        config["CMAKE_ANDROID_ARCH_ABI"] = abi
+        config["ANDROID_ABI"] = abi
+        config["CMAKE_TOOLCHAIN_FILE"] = "%s/build/cmake/android.toolchain.cmake" % env.get(
+            "ANDROID_NDK_ROOT", os.environ.get("ANDROID_NDK_ROOT", "")
+        )
+        config["CMAKE_ANDROID_STL_TYPE"] = "c++_static"
+
+    elif env["platform"] == "linux":
+        linux_flags = {
+            "x86_64": "-m64",
+            "x86_32": "-m32",
+        }.get(env["arch"], "")
+        if linux_flags:
+            config["CMAKE_C_FLAGS"] = linux_flags
+            config["CMAKE_CXX_FLAGS"] = linux_flags
+
+    elif env["platform"] == "macos":
+        if env["arch"] == "universal":
+            config["CMAKE_OSX_ARCHITECTURES"] = '"x86_64;arm64"'
+        else:
+            config["CMAKE_OSX_ARCHITECTURES"] = env["arch"]
+        if env["macos_deployment_target"] != "default":
+            config["CMAKE_OSX_DEPLOYMENT_TARGET"] = env["macos_deployment_target"]
+
+        if env["platform"] == "macos" and sys.platform != "darwin" and "OSXCROSS_ROOT" in os.environ:
+            config["CMAKE_AR"] = env["AR"]
+            config["CMAKE_RANLIB"] = env["RANLIB"]
+            if env["arch"] == "universal":
+                flags = "-arch x86_64 -arch arm64"
+            else:
+                flags = "-arch " + env["arch"]
+            if env["macos_deployment_target"] != "default":
+                flags += " -mmacosx-version-min=" + env["macos_deployment_target"]
+            config["CMAKE_C_FLAGS"] = flags
+            config["CMAKE_CXX_FLAGS"] = flags
+
+    elif env["platform"] == "ios":
+        if env["arch"] == "universal":
+            raise ValueError("iOS architecture not supported: %s" % env["arch"])
+        config["CMAKE_SYSTEM_NAME"] = "iOS"
+        config["CMAKE_OSX_ARCHITECTURES"] = env["arch"]
+        if env.get("ios_min_version", "default") != "default":
+            config["CMAKE_OSX_DEPLOYMENT_TARGET"] = env["ios_min_version"]
+        if env["ios_simulator"]:
+            config["CMAKE_OSX_SYSROOT"] = "iphonesimulator"
+
+    elif env["platform"] == "windows":
+        config["CMAKE_SYSTEM_NAME"] = "Windows"
+
+    flags = ["-D%s=%s" % it for it in config.items()]
+    if env["CMAKEGENERATOR"]:
+        flags.extend(["-G", env["CMAKEGENERATOR"]])
+    elif env["platform"] == "windows":
+        if env.get("is_msvc", False):
+            flags.extend(["-G", "NMake Makefiles"])
+        elif sys.platform in ["win32", "msys", "cygwin"]:
+            flags.extend(["-G", "Ninja"])
+        else:
+            flags.extend(["-G", "Unix Makefiles"])
+    return flags
+
+
+def cmake_emitter(target, source, env):
+    return [str(target[0]) + "/CMakeCache.txt"] + target[1:], [str(source[0]) + "/CMakeLists.txt"] + source[1:]
+
+
+def cmake_generator(target, source, env, for_signature):
+    # Strip the -j option for signature to avoid rebuilding when num_jobs changes.
+    build = env["CMAKEBUILDCOM"].replace("-j$CMAKEBUILDJOBS", "") if for_signature else env["CMAKEBUILDCOM"]
+    return [
+        SCons.Action.Action("$CMAKECONFCOM", "$CMAKECONFCOMSTR"),
+        SCons.Action.Action(build, "$CMAKEBUILDCOMSTR"),
+    ]
+
+
+def cmake_build(env, target_dir, source_dir, cmake_outputs=[], cmake_targets=[], cmake_options=[], dependencies=[]):
+    cmake_env = env.Clone()
+    target = env.Dir("{}/{}/{}".format(target_dir, env["platform"], env["arch"]))
+    source = env.Dir(source_dir)
+    builder_targets = [target] + [str(target) + "/" + f for f in cmake_outputs]
+    builder_sources = [source] + dependencies
+    cmake_env.Append(CMAKECONFFLAGS=["-D%s=%s" % it for it in cmake_options.items()])
+    if len(cmake_targets) > 0:
+        cmake_env.Append(CMAKEBUILDFLAGS=["-t"] + [t for t in cmake_targets])
+    return cmake_env.CMake(builder_targets, builder_sources)
+
+
+def options(opts):
+    opts.Add("cmake_default_flags", "Default CMake platform flags override, will be autodetected if not specified.", "")
+
+
+def exists(env):
+    return True
+
+
+def generate(env):
+    env["CMAKE"] = "cmake"
+    env["_cmake_default_flags"] = cmake_default_flags
+    env["CMAKEDEFAULTFLAGS"] = "${_cmake_default_flags(__env__)}"
+    env["CMAKEGENERATOR"] = ""
+    env["CMAKECONFFLAGS"] = SCons.Util.CLVar("")
+    env["CMAKECONFCOM"] = "$CMAKE -B ${TARGET.dir} $CMAKEDEFAULTFLAGS $CMAKECONFFLAGS ${SOURCE.dir}"
+    env["CMAKEBUILDJOBS"] = "${__env__.GetOption('num_jobs')}"
+    env["CMAKEBUILDFLAGS"] = SCons.Util.CLVar("")
+    env["CMAKEBUILDCOM"] = "$CMAKE --build ${TARGET.dir} $CMAKEBUILDFLAGS -j$CMAKEBUILDJOBS"
+    env["BUILDERS"]["CMake"] = SCons.Builder.Builder(generator=cmake_generator, emitter=cmake_emitter)
+    env.AddMethod(cmake_build, "CMakeBuild")

tools/openssl.py

@@ -0,0 +1,286 @@
+import os, sys
+import SCons.Util
+import SCons.Builder
+import SCons.Action
+from SCons.Defaults import Mkdir
+from SCons.Variables import PathVariable, BoolVariable
+
+
+def ssl_platform_target(env):
+    targets = {}
+    platform = env["platform"]
+    if platform == "linux":
+        targets = {
+            "x86_32": "linux-x86",
+            "x86_64": "linux-x86_64",
+            "arm64": "linux-aarch64",
+            "arm32": "linux-armv4",
+            "rv64": "linux64-riscv64",
+        }
+    elif platform == "android":
+        targets = {
+            "arm64": "android-arm64",
+            "arm32": "android-arm",
+            "x86_32": "android-x86",
+            "x86_64": "android-x86_64",
+        }
+    elif platform == "macos":
+        targets = {
+            "x86_64": "darwin64-x86_64",
+            "arm64": "darwin64-arm64",
+        }
+    elif platform == "ios":
+        if env["ios_simulator"]:
+            targets = {
+                "x86_64": "iossimulator-xcrun",
+                "arm64": "iossimulator-xcrun",
+            }
+        else:
+            targets = {
+                "arm64": "ios64-xcrun",
+                "arm32": "ios-xcrun",
+            }
+    elif platform == "windows":
+        if env.get("is_msvc", False):
+            targets = {
+                "x86_32": "VC-WIN32",
+                "x86_64": "VC-WIN64A",
+            }
+        else:
+            targets = {
+                "x86_32": "mingw",
+                "x86_64": "mingw64",
+            }
+
+    arch = env["arch"]
+    target = targets.get(arch, "")
+    if target == "":
+        raise ValueError("Architecture '%s' not supported for platform: '%s'" % (arch, platform))
+    return target
+
+
+def ssl_platform_options(env):
+    ssl_config_options = [
+        "no-ssl2",
+        "no-ssl3",
+        "no-weak-ssl-ciphers",
+        "no-legacy",
+        "no-shared",
+        "no-tests",
+    ]
+    if env["platform"] == "windows":
+        ssl_config_options.append("enable-capieng")
+    return ssl_config_options
+
+
+def ssl_platform_flags(env):
+    args = []
+    if env["platform"] == "android":
+        if env.get("android_api_level", ""):
+            api = int(env["android_api_level"])
+            args.append("-D__ANDROID_API__=%s" % api)
+    elif env["platform"] == "macos":
+        # OSXCross toolchain setup.
+        if sys.platform != "darwin" and "OSXCROSS_ROOT" in os.environ:
+            for k in ["CC", "CXX", "AR", "AS", "RANLIB"]:
+                args.append("%s=%s" % (k, env[k]))
+    elif env["platform"] == "windows":
+        is_win_host = sys.platform in ["win32", "msys", "cygwin"]
+        if not (is_win_host or env.get("is_msvc", False)):
+            mingw_prefixes = {
+                "x86_32": "--cross-compile-prefix=i686-w64-mingw32-",
+                "x86_64": "--cross-compile-prefix=x86_64-w64-mingw32-",
+            }
+            args.append(mingw_prefixes[env["arch"]])
+    return args
+
+
+def ssl_configure_args(env):
+    if env.get("openssl_configure_options", ""):
+        opts = SCons.Util.CLVar(env["openssl_configure_options"])
+    else:
+        opts = ssl_platform_options(env)
+
+    if env.get("openssl_configure_target", ""):
+        target = [env["openssl_configure_target"]]
+    else:
+        target = [ssl_platform_target(env)]
+
+    if env.get("openssl_configure_flags", ""):
+        flags = SCons.Util.CLVar(env["openssl_configure_flags"])
+    else:
+        flags = ssl_platform_flags(env)
+
+    return opts + target + flags
+
+
+def ssl_emitter(target, source, env):
+    return env["SSL_LIBS"], [env.File(env["SSL_SOURCE"] + "/Configure"), env.File(env["SSL_SOURCE"] + "/VERSION.dat")]
+
+
+def build_openssl(env, jobs=None):
+    if env["SSL_EXTERNAL"]:
+        # Setup the env to use the provided libraries, and return them without building.
+        env.Prepend(CPPPATH=[env["SSL_INCLUDE"]])
+        env.Prepend(LIBPATH=[env["SSL_BUILD"]])
+        if env["platform"] == "windows":
+            env.PrependUnique(LIBS=["crypt32", "ws2_32", "advapi32", "user32"])
+        env.Prepend(LIBS=env["SSL_LIBS"])
+        return [env["SSL_CRYPTO_LIBRARY"], env["SSL_LIBRARY"]]
+
+    if jobs is None:
+        jobs = int(env.GetOption("num_jobs"))
+
+    # Since the OpenSSL build system does not support macOS universal binaries, we first need to build the two libraries
+    # separately, then we join them together using lipo.
+    if env["platform"] == "macos" and env["arch"] == "universal":
+        build_envs = {
+            "x86_64": env.Clone(),
+            "arm64": env.Clone(),
+        }
+        arch_ssl = []
+        for arch in build_envs:
+            benv = build_envs[arch]
+            benv["arch"] = arch
+            generate(benv)
+            benv["SSLBUILDJOBS"] = max([1, int(jobs / len(build_envs))])
+            ssl = benv.OpenSSLBuilder()
+            arch_ssl.extend(ssl)
+            benv.NoCache(ssl)  # Needs refactoring to properly cache generated headers.
+
+        # x86_64 and arm64 includes are equivalent.
+        env["SSL_INCLUDE"] = build_envs["arm64"]["SSL_INCLUDE"]
+
+        # Join libraries using lipo.
+        lipo_action = "lipo $SOURCES -create -output $TARGET"
+        ssl_libs = list(map(lambda arch: build_envs[arch]["SSL_LIBRARY"], build_envs))
+        ssl_crypto_libs = list(map(lambda arch: build_envs[arch]["SSL_CRYPTO_LIBRARY"], build_envs))
+        ssl = env.Command(env["SSL_LIBRARY"], ssl_libs, lipo_action)
+        ssl += env.Command(env["SSL_CRYPTO_LIBRARY"], ssl_crypto_libs, lipo_action)
+        env.Depends(ssl, arch_ssl)
+    else:
+        benv = env.Clone()
+        benv["SSLBUILDJOBS"] = jobs
+        ssl = benv.OpenSSLBuilder()
+        benv.NoCache(ssl)  # Needs refactoring to properly cache generated headers.
+
+    # Setup the environment to use the freshly built openssl.
+    env.Prepend(CPPPATH=[env["SSL_INCLUDE"]])
+    env.Prepend(LIBPATH=[env["SSL_BUILD"]])
+    if env["platform"] == "windows":
+        env.PrependUnique(LIBS=["crypt32", "ws2_32", "advapi32", "user32"])
+    env.Prepend(LIBS=env["SSL_LIBS"])
+
+    return ssl
+
+
+def ssl_generator(target, source, env, for_signature):
+    # Strip the -j option for signature to avoid rebuilding when num_jobs changes.
+    build = env["SSLBUILDCOM"].replace("-j$SSLBUILDJOBS", "") if for_signature else env["SSLBUILDCOM"]
+    return [
+        Mkdir("$SSL_BUILD"),
+        Mkdir("$SSL_INSTALL"),
+        SCons.Action.Action("$SSLCONFIGCOM", "$SSLCONFIGCOMSTR"),
+        SCons.Action.Action(build, "$SSLBUILDCOMSTR"),
+    ]
+
+
+def options(opts):
+    opts.Add(PathVariable("openssl_source", "Path to the openssl sources.", "thirdparty/openssl"))
+    opts.Add("openssl_build", "Destination path of the openssl build.", "bin/thirdparty/openssl")
+    opts.Add(
+        "openssl_configure_options",
+        "OpenSSL configure options override. Will use a reasonable default if not specified.",
+        "",
+    )
+    opts.Add(
+        "openssl_configure_target", "OpenSSL configure target override, will be autodetected if not specified.", ""
+    )
+    opts.Add(
+        "openssl_configure_flags",
+        "OpenSSL configure compiler flags override. Will be autodetected if not specified.",
+        "",
+    )
+    opts.Add(
+        "openssl_external_crypto",
+        'An external libcrypto static library (e.g. "/usr/lib/x86_64-linux-gnu/libcrypto.a"). If not provided, OpenSSL will be built from source.',
+        "",
+    )
+    opts.Add(
+        "openssl_external_ssl",
+        'An external libssl static library (e.g. "/usr/lib/x86_64-linux-gnu/libssl.a"). If not provided, OpenSSL will be built from source.',
+        "",
+    )
+    opts.Add(
+        "openssl_external_include",
+        'An external OpenSSL "include" folder (e.g. "/usr/include/openssl").',
+        "",
+    )
+
+
+def exists(env):
+    return True
+
+
+def generate(env):
+    env.AddMethod(build_openssl, "OpenSSL")
+
+    # Check if the user specified infos about external OpenSSL files.
+    external_opts = ["openssl_external_crypto", "openssl_external_ssl", "openssl_external_include"]
+    is_set = lambda k: env.get(k, "") != ""
+    if any(map(is_set, external_opts)):
+        # Need provide the whole (crypto, ssl, include) triple to proceed.
+        if not all(map(is_set, external_opts)):
+            print('Error: The options "%s" must all be set to use a external library.' % '", "'.join(external_opts))
+            sys.exit(255)
+
+        env["SSL_CRYPTO_LIBRARY"] = env.File("${openssl_external_crypto}")
+        env["SSL_LIBRARY"] = env.File("${openssl_external_ssl}")
+        env["SSL_BUILD"] = env.Dir("${SSL_LIBRARY.dir}").abspath
+        env["SSL_INSTALL"] = env.Dir("${SSL_LIBRARY.dir}").abspath
+        env["SSL_INCLUDE"] = env.Dir("${openssl_external_include}").abspath
+        env["SSL_LIBS"] = [env["SSL_LIBRARY"], env["SSL_CRYPTO_LIBRARY"]]
+        env["SSL_EXTERNAL"] = True
+        return
+
+    # We will need to build our own OpenSSL library.
+    env["SSL_EXTERNAL"] = False
+
+    # Android needs the NDK in ENV, and proper PATH setup.
+    if env["platform"] == "android" and env["ENV"].get("ANDROID_NDK_ROOT", "") == "":
+        cc_path = os.path.dirname(env["CC"])
+        if cc_path and cc_path not in env["ENV"]:
+            env.PrependENVPath("PATH", cc_path)
+        if "ANDROID_NDK_ROOT" not in env["ENV"]:
+            env["ENV"]["ANDROID_NDK_ROOT"] = env.get("ANDROID_NDK_ROOT", os.environ.get("ANDROID_NDK_ROOT", ""))
+
+    env["SSL_SOURCE"] = env.Dir(env["openssl_source"]).abspath
+    env["SSL_BUILD"] = env.Dir(env["openssl_build"] + "/{}/{}".format(env["platform"], env["arch"])).abspath
+    env["SSL_INSTALL"] = env.Dir(env["SSL_BUILD"] + "/dest").abspath
+    env["SSL_INCLUDE"] = env.Dir(env["SSL_INSTALL"] + "/include").abspath
+    lib_ext = ".lib" if env.get("is_msvc", False) else ".a"
+    env["SSL_LIBRARY"] = env.File(env["SSL_BUILD"] + "/libssl" + lib_ext)
+    env["SSL_CRYPTO_LIBRARY"] = env.File(env["SSL_BUILD"] + "/libcrypto" + lib_ext)
+    env["SSL_LIBS"] = [env["SSL_LIBRARY"], env["SSL_CRYPTO_LIBRARY"]]
+
+    # Configure action
+    env["PERL"] = env.get("PERL", "perl")
+    env["_ssl_configure_args"] = ssl_configure_args
+    env["SSLPLATFORMCONFIG"] = "${_ssl_configure_args(__env__)}"
+    env["SSLCONFFLAGS"] = SCons.Util.CLVar("")
+    # fmt: off
+    env["SSLCONFIGCOM"] = 'cd ${TARGET.dir} && $PERL -- ${SOURCE.abspath} --prefix="${SSL_INSTALL}" --openssldir="${SSL_INSTALL}" $SSLPLATFORMCONFIG $SSLCONFFLAGS'
+    # fmt: on
+
+    # Build action
+    env["SSLBUILDJOBS"] = "${__env__.GetOption('num_jobs')}"
+    # fmt: off
+    env["SSLBUILDCOM"] = "make -j$SSLBUILDJOBS -C ${TARGET.dir} && make -j$SSLBUILDJOBS -C ${TARGET.dir} install_sw install_ssldirs"
+    # fmt: on
+
+    # Windows MSVC needs to build using NMake
+    if env["platform"] == "windows" and env.get("is_msvc", False):
+        env["SSLBUILDCOM"] = "cd ${TARGET.dir} && nmake install_sw install_ssldirs"
+
+    env["BUILDERS"]["OpenSSLBuilder"] = SCons.Builder.Builder(generator=ssl_generator, emitter=ssl_emitter)
+    env.AddMethod(build_openssl, "OpenSSL")

tools/rtc.py

@@ -0,0 +1,51 @@
+import os
+
+
+def build_library(env, ssl):
+    rtc_config = {
+        "CMAKE_BUILD_TYPE": "RelWithDebInfo" if env["debug_symbols"] else "Release",
+        "USE_NICE": 0,
+        "NO_WEBSOCKET": 1,
+        "NO_EXAMPLES": 1,
+        "NO_TESTS": 1,
+        "BUILD_WITH_WARNINGS": "0",  # Disables werror in libsrtp.
+        "OPENSSL_USE_STATIC_LIBS": 1,
+        "OPENSSL_INCLUDE_DIR": env["SSL_INCLUDE"],
+        "OPENSSL_SSL_LIBRARY": env["SSL_LIBRARY"],
+        "OPENSSL_CRYPTO_LIBRARY": env["SSL_CRYPTO_LIBRARY"],
+        "OPENSSL_ROOT_DIR": env["SSL_INSTALL"],
+    }
+    is_msvc = env.get("is_msvc", False)
+    lib_ext = ".lib" if is_msvc else ".a"
+    lib_prefix = "" if is_msvc else "lib"
+    rtc_libs = [
+        "{}datachannel-static{}".format(lib_prefix, lib_ext),
+        "deps/libjuice/{}juice-static{}".format(lib_prefix, lib_ext),
+        "deps/libsrtp/{}srtp2{}".format(lib_prefix, lib_ext),
+        "deps/usrsctp/usrsctplib/{}usrsctp{}".format(lib_prefix, lib_ext),
+    ]
+    # Build libdatachannel
+    rtc = env.CMakeBuild(
+        "#bin/thirdparty/libdatachannel/",
+        "#thirdparty/libdatachannel",
+        cmake_options=rtc_config,
+        cmake_outputs=rtc_libs,
+        cmake_targets=["datachannel-static"],
+        dependencies=ssl,
+    )
+
+    # Configure env.
+    if env["platform"] == "windows":
+        env.PrependUnique(LIBS=["iphlpapi", "bcrypt"])
+    env.Prepend(LIBS=list(filter(lambda f: str(f).endswith(lib_ext), rtc)))
+    env.Append(CPPPATH=["#thirdparty/libdatachannel/include"])
+
+    return rtc
+
+
+def exists(env):
+    return "CMake" in env
+
+
+def generate(env):
+    env.AddMethod(build_library, "BuildLibDataChannel")