clientNegotiation
abstract fun clientNegotiation(negotiatedProtocols: List<WebSocketExtensionHeader>): Boolean(source)
This method is called only for the client, when it receives the WebSocket upgrade response.
Return
true if the extension should be used by the client.
Parameters
negotiatedProtocols
contains list of negotiated extensions from the server (can be empty).
It's up to extension to decide if it should be used or not.