[tor-bugs] #7798 [Tor]: Use directory guards even when consensus isn't live

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#7798: Use directory guards even when consensus isn't live
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 Reporter:  nickm       |          Owner:                  
     Type:  defect      |         Status:  new             
 Priority:  normal      |      Milestone:  Tor: unspecified
Component:  Tor         |        Version:                  
 Keywords:  tor-client  |         Parent:                  
   Points:              |   Actualpoints:                  
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 Our initial directory guard implementation only works when we have a live
 consensus to find out the directory guards' IP addresses.  So it's an
 improvement, but it's hardly a perfect solution.

 We should instead remember our guards' IP addresses in our state file, and
 try to use our directory guards even when we don't have a consensus.  This
 will require consideration about handling our guards being down and
 handling the network being down.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7798>
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