Initial effort to implement SSE #3
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Note that this PR is not based on |
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| // Advertise support for SSE | ||
| let link = '<' + config.rest + '/sse/' + uuid + '>; ' + | ||
| 'rel="urn:ietf:params:whep:ext:core:server-sent-events"; ' + |
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Heads-up: I noticed there's some inconsistency about these rel values in the spec.
Opened wish-wg/webrtc-http-egress-protocol#13 to discuss that and come up with a canonical answer, but this line and its parallel in web/watch.js may need to change.
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The inconsistency has been resolved. No action is needed in this PR.
Sergio's updated the spec and reference lib to consistently use urn:ietf:params:whep:ext:core:server-sent-events (the value used in this PR).
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Thanks for the heads up! (and sorry for the late feedback, I was busy at the IETF meeting).
This is a rough implementation of Server-Side Events (SSE) as used in WHEP in the latest draft. It currently only covers
viewercount,activeandinactive: no support forlayersor active layer selection yet, as the specification is currently lacking in that regard IMO.The implementation is a bit flaky, right now, so it's not meant to be a final realization of the feature, but then this was just added to the draft and may change considerably in the future anyway. That said, it seems to be working as expected in its current status, which means it's fine for prototyping purposes.