Firebase - WebSocket is closed before the connection is established.

Question

Just starting out with Firebase (great concept BTW) and I notice in the Chrome console it reports "WebSocket is closed before the connection is established"

It still works but wondered why that might be happening - is it anything to be concerned about?

Interestingly it does state there is a successful websocket connection.

Thanks

Answer 1

This is a known issue. The Firebase client attempts to establish a real-time connection to the Firebase servers using multiple methods. If one of those methods succeeds before the Websocket does, we cancel the Websocket and you see that warning. You can safely ignore the error.