eventsource continues launching more containers if left open

[rgbkrk]

If you leave the eventsource open after "ready" it continues launching more

Reproduction steps:

• Visit about:blank
• Open DevTools Console
• Paste:

es = new window.EventSource('https://mybinder.org/build/gh/nteract/vdom/master')
es.onmessage = msg => console.log(msg)

• wait...
• watch all the successive launches

---

Not a crazy deal for me, I just happened to notice while hitting the event source API directly. My current code does a .close appropriately. Figured this should probably be cleaned up though.

[choldgraf]

I think we just got burned by this with the nbinteract repository. @rgbkrk did you figure out a way to work around this from your side of things?

[rgbkrk]

Yeah, we .close() the event source after we get a freshly baked container. It wasn't an issue at the time, it just smelled like a likely operational problem waiting to happen.

[choldgraf]

it just smelled like a likely operational problem waiting to happen.

[manics]

Is this still a problem?