Merge pull request 'LINXD-2850: Add handler on icestatechange failed/disconnected to send 'connection-failed' event to participants' (#39) from LINXD-2850-connection-failed-handler into develop

Reviewed-on: #39
Reviewed-by: Cristi Ene <cristi.ene@safemobile.com>

app.js

@@ -542,6 +542,15 @@ const isInitiator = (callId, socketId) => {
   return videoCalls[callId]?.initiatorSocket?.id === socketId;
 };
 
+const emitToParticipants = (callId, event, message) => {
+  try {
+    videoCalls[callId].receiverSocket.emit(event, message);
+    videoCalls[callId].initiatorSocket.emit(event, message);
+  } catch (error) {
+    console.error(`[emitToParticipants] | ERROR | callId: ${callId} | error: ${error.message}`);
+  }
+}
+
 /*
   - Called from at event 'createWebRtcTransport' and assigned to the consumer or producer transport
   - It will return parameters, these are required for the client to create the RecvTransport 
@@ -584,6 +593,7 @@ const createWebRtcTransportLayer = async (callId, callback) => {
       console.log(`[ICE STATE CHANGE] callId: ${callId} | State: ${iceState}`);
       if (iceState === 'failed' || iceState === 'disconnected') {
         console.warn(`⚠️ ICE failure detected for callId: ${callId}! Possible UDP blockage.`);
+        emitToParticipants(callId, 'connection-failed', { callId });
       }
     });