websocket_client_verify_handshake

Looks at the response status code and headers in msg and determines if they contain a valid WebSocket handshake response ( given the handshake request in msg's request headers).

If supported_extensions is non-null, extensions included in the response "Sec-WebSocket-Extensions" are verified too. Accepted extensions are returned in accepted_extensions parameter if non- null.

This is a low-level function; if you use [method@Session.websocket_connect_async] to create a WebSocket connection, it will call this for you.

Parameters:

msg	Message containing both client and server sides of a WebSocket handshake
supported_extensions	list of supported extension types
accepted_extensions	a List of [class@WebsocketExtension] objects

Returns:

true if msg contains a completed valid WebSocket handshake, false and an error if not.