[tor-bugs] #6752 [Tor]: TestingTorNetwork doesn't lower the dir fetch retry schedules

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#6752: TestingTorNetwork doesn't lower the dir fetch retry schedules
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 Reporter:  arma                      |          Owner:                    
     Type:  enhancement               |         Status:  new               
 Priority:  major                     |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor                       |        Version:                    
 Keywords:  tor-client small-feature  |         Parent:  #7172             
   Points:                            |   Actualpoints:                    
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Comment(by karsten):

 Okay, I start seeing the issue.  I have a Shadow network with five
 authorities that start at minutes 0, 5, 10, 15, and 25, and a client that
 starts at minute 0.  With improved logging, I can now see how the client
 uses a schedule of 0, 60, 300, ... seconds to retry failed downloads.

 Here's what confused me in the first place.  Every 180 seconds, a client
 says "Application request when we haven't used client functionality
 lately. Optimistically trying directory fetches again." in its logs,
 resets download schedules, and tries all directory fetches again.  Non-
 clients don't do that, probably because there's no Shadow thing making an
 application request.  Which is bad, because they don't cache directory
 information then.  However, this 180-second thing made the problem look
 not too bad, because 3 or even 10 minutes aren't much in a 5 minute
 consensus schedule.  But I think we need to fix this.

 I'll look more into the issue tomorrow and hopefully come up with a patch.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6752#comment:27>
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