Changed thread / added helper for UI based messages on MAIN thread.

RelayClient/MainPage.xaml.cs

@@ -105,6 +105,9 @@ public partial class MainPage : ContentPage
             return;
         }
         
+        SafeSendRawToWebView($"[{_username}] RAW WS DATA: {e.Data}");
+
+
         Console.WriteLine($"[{_username}] RAW WS DATA: {e.Data}");
 
         try
@@ -358,9 +361,9 @@ public partial class MainPage : ContentPage
     {
         //TODO: get bool value for if channel ID has an active call
         //TODO: Join RTC using current channel ID
-        hybridWebView.SendRawMessage($"Attempting to join RTC Channel {_currentChannelName}");
+        SafeSendRawToWebView($"Attempting to join RTC Channel {_currentChannelName}");
         bool active = await ServerAPI.GetIsChannelActiveAsync(_currentChannelId);
-        hybridWebView.SendRawMessage($"Rtc Channel {_currentChannelName} is active: {active}");
+        SafeSendRawToWebView($"Rtc Channel {_currentChannelName} is active: {active}");
         return active;
         //await hybridWebView.EvaluateJavaScriptAsync($"window.channelCallJoin({active})");
 
@@ -380,7 +383,7 @@ public partial class MainPage : ContentPage
         }
         catch (Exception ex)
         {
-            hybridWebView.SendRawMessage(ex.Message);
+            SafeSendRawToWebView(ex.Message);
         }
 
     }
@@ -408,7 +411,7 @@ public partial class MainPage : ContentPage
     
     private void OnSendMessageButtonClicked(object sender, EventArgs e)
     {
-        hybridWebView.SendRawMessage($"Hello from C#!");
+        SafeSendRawToWebView($"Hello from C#!");
     }
 
     private async void OnHybridWebViewRawMessageReceived(object sender, HybridWebViewRawMessageReceivedEventArgs e)
@@ -477,4 +480,19 @@ public partial class MainPage : ContentPage
 
         Console.WriteLine($"[{_username}] pushed RTC context into HybridWebView.");
     }
+    
+    private void SafeSendRawToWebView(string message)
+    {
+        MainThread.BeginInvokeOnMainThread(() =>
+        {
+            try
+            {
+                hybridWebView.SendRawMessage(message);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[{_username}] failed to send raw message to HybridWebView: {ex.Message}");
+            }
+        });
+    }
 }

RelayServer/Services/Chat/ChatSocketBehavior.cs

@@ -5,6 +5,7 @@ using RelayServer.Services.Data;
 using RelayServer.Services.Rtc;
 using WebSocketSharp;
 using WebSocketSharp.Server;
+using ErrorEventArgs = WebSocketSharp.ErrorEventArgs;
 
 namespace RelayServer.Services.Chat;
 
@@ -77,9 +78,16 @@ public class ChatSocketBehavior : WebSocketBehavior
     protected override void OnClose(CloseEventArgs e)
     {
         RtcChannelPresenceService.RemoveSession(ID);
+        Console.WriteLine($"WebSocket closed: session={ID}, code={e.Code}, reason={e.Reason}");
         base.OnClose(e);
     }
     
+    protected override void OnError(ErrorEventArgs e)
+    {
+        Console.WriteLine($"WebSocket error: session={ID}, message={e.Message}");
+        base.OnError(e);
+    }
+
     /// <summary>
     /// Extracts a display username from a stored user record id value.
     /// </summary>