Can't establish connection to TURN
The application failed to connect to the TURN server.
Description
When an application cannot connect to a TURN server, the server usually returns 4xx errors when the credentials are invalid or the client is not authorized, and 6xx errors when the server explicitly refuses the connection in specific situations.
In some cases, the client fails to establish the connection and reports a 701 error. This is a special case indicating that the error was generated by the client itself rather than by the TURN server. Such an error typically points to a TURN server configuration issue or a network-level blockage that prevents the connection from being established.
What do we do here?
When we see an error on TURN that is 701 and with the error_text that contains “failed to establish connection”, we mark it as an Observation.