[tor-bugs] #20535 [Core Tor/Tor]: A 304 "Not Modified" should update the time to when we next expect a modification

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#20535: A 304 "Not Modified" should update the time to when we next expect a
modification
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 Reporter:  teor          |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.2.9.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  regression    |  Actual Points:
Parent ID:  #20499        |         Points:  0.5
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by teor):

 We took schedules carefully tuned in 0.2.8 to make sure that it could
 survive 7 relay failures and still bootstrap in 30 seconds with 99.9%
 reliability, and implemented exponential backoff in 0.2.9 in a way that
 causes retries 5 times in 10 seconds in some cases, and in other cases
 retries twice in the first 30 seconds.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20535#comment:4>
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