How do you setup an authenticated websocket?

We have a websocket that we need to connect to and then transform the data in FME. The connection is an authenticated one, the behaviour is attempt connection to the destination and port, the socket server then expects an a string as authentication. How do we send this in FME?

Preference is to use a notification or an automation.

Don't want to use a transformer as tis requires an extra engine I believe.