Lui 36ea867dcf
[Streams] Check non-existent streams more than once (#5223)
* [Streams] Check non-existent streams more than once

- For YouTube streams, it seems like the RSS feed may sometimes return
  an HTTP 404 for a channel, even though the channel exists.
- If this happens more than a few times, then we should declare the
  stream as non-existent, and purge it from the list of streams we
  check.

* [Streams] Move retry_count reset for YouTubeStream

- Reset after the RSS check, since that is the only place where we raise
  StreamNotFound in that function.

* [Streams] Increase retry to 20

* [Streams] Reduce retry count to 10
2021-09-03 16:25:01 +02:00
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