How github "web push notifications" works?

문제

It seems that github uses a polling server for real time notifications (live.github.com) on its web interface.

It seems like the technology is not Websocket based neither XHR-polling.

How is it developed ?

해결책

It seems they use HTML5 Server-Sent Events.

I found it after a while by looking at the request to live.github.com that accepts "text/event-stream"

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