Sliding sync + JS-SDK: /sync finishes immediately, spamming requests #403
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Reference: Matthias/conduit#403
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When requesting a sliding sync using the Matrix JS SDK with a timeout of 5000 (5 seconds) with this request:
Initial sync request
the server waits for 5 seconds and responds with:
Initial response
The immediately following sync request takes a whole 25ms to complete:
Second request
Second response
... the third request follows immediately, also only taking a few milliseconds ...
Third Request
Third Response
This request also finishes immediately, leading to a fourth request ... and so on. It never stops and has been freezing up my browser quite a bit =)
As you may have guessed, the initial wait is exactly how long the long-polling timeout was supposed to be.
This doesn't happen when connecting to a Synapse server such as matrix.org.
This may be related to troubles other people are having (for instance with Element Web): #400
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