feat: Add support for CURL networking.

.github/actions/ci/action.yml

@@ -29,6 +29,10 @@ inputs:
     description: 'Whether to run ./build-release-windows.sh for the CMake target'
     required: false
     default: 'false'
+  use_curl:
+    description: 'Whether to enable CURL networking (LD_CURL_NETWORKING=ON)'
+    required: false
+    default: 'false'
 
 runs:
   using: composite
@@ -44,22 +48,30 @@ runs:
     - name: Install OpenSSL
       uses: ./.github/actions/install-openssl
       id: install-openssl
+    - name: Install CURL
+      if: inputs.use_curl == 'true'
+      uses: ./.github/actions/install-curl
+      id: install-curl
     - name: Build Library
       shell: bash
-      run: ./scripts/build.sh ${{ inputs.cmake_target }} ON
+      run: ./scripts/build.sh ${{ inputs.cmake_target }} ON ${{ inputs.use_curl }}
       env:
         BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
         Boost_DIR: ${{ steps.install-boost.outputs.Boost_DIR }}
         OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
+        CURL_ROOT: ${{ steps.install-curl.outputs.CURL_ROOT }}
+        CMAKE_PREFIX_PATH: ${{ steps.install-curl.outputs.CURL_ROOT }}
     - name: Build Tests
       id: build-tests
       if: inputs.run_tests == 'true'
       shell: bash
-      run: ./scripts/build.sh gtest_${{ inputs.cmake_target }} ON
+      run: ./scripts/build.sh gtest_${{ inputs.cmake_target }} ON ${{ inputs.use_curl }}
       env:
         BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
         Boost_DIR: ${{ steps.install-boost.outputs.Boost_DIR }}
         OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
+        CURL_ROOT: ${{ steps.install-curl.outputs.CURL_ROOT }}
+        CMAKE_PREFIX_PATH: ${{ steps.install-curl.outputs.CURL_ROOT }}
     - name: Run Tests
       if: steps.build-tests.outcome == 'success'
       shell: bash
@@ -70,16 +82,30 @@ runs:
     - name: Simulate Release (Linux/MacOS)
       if: inputs.simulate_release == 'true'
       shell: bash
-      run: ./scripts/build-release.sh ${{ inputs.cmake_target }}
+      run: |
+        if [ "${{ inputs.use_curl }}" == "true" ]; then
+          ./scripts/build-release.sh ${{ inputs.cmake_target }} --with-curl
+        else
+          ./scripts/build-release.sh ${{ inputs.cmake_target }}
+        fi
       env:
         BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
         OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
+        CURL_ROOT: ${{ steps.install-curl.outputs.CURL_ROOT }}
+        CMAKE_PREFIX_PATH: ${{ steps.install-curl.outputs.CURL_ROOT }}
 
     - name: Simulate Release (Windows)
       if: inputs.simulate_windows_release == 'true'
       shell: bash
-      run: ./scripts/build-release-windows.sh ${{ inputs.cmake_target }}
+      run: |
+        if [ "${{ inputs.use_curl }}" == "true" ]; then
+          ./scripts/build-release-windows.sh ${{ inputs.cmake_target }} --with-curl
+        else
+          ./scripts/build-release-windows.sh ${{ inputs.cmake_target }}
+        fi
       env:
         BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
         OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
         Boost_DIR: 'C:\local\boost_1_87_0\lib64-msvc-14.3\cmake\Boost-1.87.0'
+        CURL_ROOT: ${{ steps.install-curl.outputs.CURL_ROOT }}
+        CMAKE_PREFIX_PATH: ${{ steps.install-curl.outputs.CURL_ROOT }}

.github/actions/cmake-test/action.yml

@@ -11,6 +11,10 @@ inputs:
   toolset:
     description: 'Boost toolset'
     required: false
+  cmake_extra_args:
+    description: 'Extra arguments to pass to CMake'
+    required: false
+    default: ''
 
 runs:
   using: composite
@@ -36,6 +40,7 @@ runs:
         BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
         OPENSSL_ROOT_DIR: ${{ steps.install-openssl.outputs.OPENSSL_ROOT_DIR }}
         CMAKE_INSTALL_PREFIX: ../LAUNCHDARKLY_INSTALL
+        CMAKE_EXTRA_ARGS: ${{ inputs.cmake_extra_args }}
     - name: Build the SDK
       shell: bash
       run: |

.github/actions/install-curl/action.yml

@@ -0,0 +1,64 @@
+name: Install CURL
+description: 'Install CURL development libraries for all platforms.'
+
+outputs:
+  CURL_ROOT:
+    description: The location of the installed CURL.
+    value: ${{ steps.determine-root.outputs.CURL_ROOT }}
+
+runs:
+  using: composite
+  steps:
+    # Linux: Install via apt-get
+    - name: Install CURL for Ubuntu
+      if: runner.os == 'Linux'
+      id: apt-action
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libcurl4-openssl-dev
+        echo "CURL_ROOT=/usr" >> $GITHUB_OUTPUT
+
+    # macOS: Install via homebrew
+    - name: Install CURL for macOS
+      if: runner.os == 'macOS'
+      id: brew-action
+      shell: bash
+      run: |
+        brew install curl
+        echo "CURL_ROOT=$(brew --prefix curl)" >> $GITHUB_OUTPUT
+
+    # Windows: Build CURL from source with MSVC using helper script
+    - name: Install CURL for Windows
+      if: runner.os == 'Windows'
+      id: windows-action
+      shell: pwsh
+      run: |
+        # Use the build script from the repository
+        & "${{ github.workspace }}\scripts\build-curl-windows.ps1" -Version "8.11.1" -InstallPrefix "C:\curl-install"
+
+        if ($LASTEXITCODE -ne 0) {
+          Write-Error "CURL build failed"
+          exit 1
+        }
+
+        echo "CURL_ROOT=C:\curl-install" >> $env:GITHUB_OUTPUT
+
+    - name: Determine root
+      id: determine-root
+      shell: bash
+      run: |
+        if [ ! -z "$ROOT_APT" ]; then
+          echo "CURL_ROOT=$ROOT_APT" >> $GITHUB_OUTPUT
+          echo Setting CURL_ROOT to "$ROOT_APT"
+        elif [ ! -z "$ROOT_BREW" ]; then
+          echo "CURL_ROOT=$ROOT_BREW" >> $GITHUB_OUTPUT
+          echo Setting CURL_ROOT to "$ROOT_BREW"
+        elif [ ! -z "$ROOT_WINDOWS" ]; then
+          echo "CURL_ROOT=$ROOT_WINDOWS" >> $GITHUB_OUTPUT
+          echo Setting CURL_ROOT to "$ROOT_WINDOWS"
+        fi
+      env:
+        ROOT_APT: ${{ steps.apt-action.outputs.CURL_ROOT }}
+        ROOT_BREW: ${{ steps.brew-action.outputs.CURL_ROOT }}
+        ROOT_WINDOWS: ${{ steps.windows-action.outputs.CURL_ROOT }}