I believe you have it essentially backward. Websockets consume a connection no matter what, as the protocol does not work with HTTP2 (there was an attempt, but I believe it wasn't adopted and abandoned).
The SSE requests do work with HTTP2, as do some other old methods like long polling. All the tabs will generally share one connection to that domain.
> Websockets consume a connection no matter what, as the protocol does not work with HTTP2 (there was an attempt, but I believe it wasn't adopted and abandoned).
The SSE requests do work with HTTP2, as do some other old methods like long polling. All the tabs will generally share one connection to that domain.