Added TURN option to browser bridge demo.

Author: sipsorcery

examples/BrowserBridge/BrowserBridge.csproj

@@ -13,10 +13,11 @@
     <PackageReference Include="LanguageExt.Core" Version="4.4.9" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="9.0.0" />
+    <PackageReference Include="SIPSorcery.OpenAI.WebRTC" Version="8.0.4" />
   </ItemGroup>
 
- <ItemGroup>
+ <!--<ItemGroup>
    <ProjectReference Include="..\..\src\SIPSorcery.OpenAI.WebRTC.csproj" />
- </ItemGroup>
+ </ItemGroup>-->
 
 </Project>

examples/BrowserBridge/Dockerfile

@@ -39,15 +39,15 @@ ARG BUILD_CONFIGURATION=Release
 WORKDIR /src
 
 # Add local NuGet source (replace with your actual package version)
-RUN mkdir -p /local-nuget
-COPY ./local-nuget/*.nupkg /local-nuget/
-RUN dotnet nuget add source /local-nuget --name local
+#RUN mkdir -p /local-nuget
+#COPY ./local-nuget/*.nupkg /local-nuget/
+#RUN dotnet nuget add source /local-nuget --name local
 
 COPY [".", "."]
 
 # Publish the application
 FROM build AS publish
-RUN dotnet publish "./WebRTCOpenAIBridge.csproj" -c $BUILD_CONFIGURATION -o /app/publish
+RUN dotnet publish "./BrowserBridge.csproj" -c $BUILD_CONFIGURATION -o /app/publish
 
 # Stage 4: Final Image to Run the App
 FROM base AS final
@@ -76,4 +76,4 @@ RUN ldconfig
 ENV PATH="/usr/local/bin:${PATH}"
 
 # Set entrypoint to run the .NET application
-ENTRYPOINT ["dotnet", "WebRTCOpenAIBridge.dll"]
+ENTRYPOINT ["dotnet", "BrowserBridge.dll"]

examples/BrowserBridge/Program.cs

@@ -38,12 +38,16 @@
 using SIPSorcery.OpenAIWebRTC.Models;
 using SIPSorceryMedia.Abstractions;
 using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 
 namespace demo;
 
 class Program
 {
+    private static string? _stunUrl = string.Empty;
+    private static string? _turnUrl = string.Empty;
+
     static async Task Main(string[] args)
     {
         Log.Logger = new LoggerConfiguration()
@@ -58,6 +62,9 @@ static async Task Main(string[] args)
         Log.Information("WebRTC OpenAI Browser Bridge Demo Program");
 
         var openAiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY") ?? string.Empty;
+        _stunUrl = Environment.GetEnvironmentVariable("STUN_URL");
+        _turnUrl = Environment.GetEnvironmentVariable("TURN_URL");
+        bool.TryParse(Environment.GetEnvironmentVariable("WAIT_FOR_ICE_GATHERING_TO_SEND_OFFER"), out var waitForIceGatheringToSendOffer);
 
         if (string.IsNullOrWhiteSpace(openAiKey))
         {
@@ -107,6 +114,11 @@ static async Task Main(string[] args)
                     config,
                     RTCSdpType.offer);
 
+                webSocketPeer.OfferOptions = new RTCOfferOptions
+                {
+                    X_WaitForIceGatheringToComplete = waitForIceGatheringToSendOffer
+                };
+
                 var browserPeerTask = webSocketPeer.Run();
 
                 SetOpenAIPeerEventHandlers(openAiWebRTCEndPoint);
@@ -183,6 +195,18 @@ private static void ConnectPeers(RTCPeerConnection browserPc, IWebRTCEndPoint op
     /// </summary>
     private static Task<RTCPeerConnection> CreateBrowserPeerConnection(RTCConfiguration pcConfig)
     {
+        pcConfig.iceServers = new List<RTCIceServer>();
+
+        if (!string.IsNullOrWhiteSpace(_stunUrl))
+        {
+            pcConfig.iceServers.Add(_stunUrl.ParseStunServer());
+        }
+
+        if (!string.IsNullOrWhiteSpace(_turnUrl))
+        {
+            pcConfig.iceServers.Add(_turnUrl.ParseStunServer());
+        }
+
         var peerConnection = new RTCPeerConnection(pcConfig);
 
         MediaStreamTrack audioTrack = new MediaStreamTrack(AudioCommonlyUsedFormats.OpusWebRTC, MediaStreamStatusEnum.SendRecv);
@@ -191,3 +215,19 @@ private static Task<RTCPeerConnection> CreateBrowserPeerConnection(RTCConfigurat
         return Task.FromResult(peerConnection);
     }
 }
+
+public static class StunServerExtensions
+{
+    public static RTCIceServer ParseStunServer(this string stunServer)
+    {
+        var fields = stunServer.Split(';');
+
+        return new RTCIceServer
+        {
+            urls = fields[0],
+            username = fields.Length > 1 ? fields[1] : null,
+            credential = fields.Length > 2 ? fields[2] : null,
+            credentialType = RTCIceCredentialType.password
+        };
+    }
+}