What is the difference of chat and superchat subprotocol in WebSocket

Question

I can't find anything about the subprotocol used with WebSockets. What is the difference between "chat" and "superchat" subprotocol mentioned in the rfc6455 and where can I find the RFC for "chat" and "superchat" or are they just placeholders?

Answer 1

Both protocols don't exist, so there's no actual difference between them.

These "protocols" were just example name for possible Sec-WebSocket-Protocol header values.

It's pretty much the same as using foo and bar as example names, except they chose chat and superchat as example names.