Fix: websocket signaling take now same port as webserver

app/lib/urlFactory.js

@@ -1,7 +1,8 @@
 export function getProtooUrl(peerName, roomId)
 {
 	const hostname = window.location.hostname;
-	const url = `wss://${hostname}:3443/?peerName=${peerName}&roomId=${roomId}`;
+	const port = window.location.port;
+	const url = `wss://${hostname}:${port}/?peerName=${peerName}&roomId=${roomId}`;
 
 	return url;
 }