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[tor-bugs] #6769 [Tor Relay]: Relays (and bridges) don't use microdescriptors



#6769: Relays (and bridges) don't use microdescriptors
-----------------------+----------------------------------------------------
 Reporter:  arma       |          Owner:                    
     Type:  defect     |         Status:  new               
 Priority:  normal     |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor Relay  |        Version:                    
 Keywords:             |         Parent:                    
   Points:             |   Actualpoints:                    
-----------------------+----------------------------------------------------
 In we_use_microdescriptors_for_circuits() we return
 {{{
   !server_mode(options) && !options->FetchUselessDescriptors;
 }}}

 So if you're a relay, even if you don't otherwise cache dir info, you end
 up fetching and using old-style descriptors rather than microdescriptors.

 This decision has a minor effect on bootstrapping, where we won't build
 circuits until we have the full set of old-style consensus-and-
 descriptors, so e.g. time_to_try_getting_descriptors in main.c is dictated
 at that point by LAZY_DESCRIPTOR_RETRY_INTERVAL even if we don't have much
 of the microdesc info.

 The decision has a larger effect on bridges, which fetch and use normal
 descriptors -- over time they will diverge even more from normal client
 behavior.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6769>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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