Server push sends responses to requests, only these requests are “promised” by the server. So, for every event pushed, the server would have to send at least th

Server push sends responses to requests, only these requests are “promised” by the server. So, for every event pushed, the server would have to send at least three frames: promise (the synthesized request), response headers, and response data. Also, you would still need something else for HTTP/1.x. Even an HTTP/2 client does not have to support server push, and can even ask the server to disable it. Why do you think server-sent events are not HTTP-y? I found them as elegant as modern Web technology gets.