how can i validate a websocket channel ? and what's the relation between websocket channel and websocket request ?

i have recorded a scenario that contains a websocket channel with three responses , and i tried to validate websocket's response .
I implemented a message mapping with a regular expression and i extracted the variables .However , the websocket is always passed even the response is empty . So , how can i validate a websocket channel ? and is it necessary to work with a websocket request in websocket validation ?