[tor-bugs] #4838 [Tor Relay]: A directory cache will never purge some old descriptors

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#4838: A directory cache will never purge some old descriptors
------------------------+---------------------------------------------------
 Reporter:  fermenthor  |          Owner:                     
     Type:  defect      |         Status:  new                
 Priority:  normal      |      Milestone:                     
Component:  Tor Relay   |        Version:  Tor: 0.2.3.10-alpha
 Keywords:              |         Parent:                     
   Points:              |   Actualpoints:                     
------------------------+---------------------------------------------------
 By default, caches don't try to download v2 statuses so have_enough_v2 in
 routerlist_remove_old_routers() is always false. This is similar to #3543.

 I've come up with this modification to check whether we do v2 at all:
 {{{
 +  const or_options_t *options = get_options();
    have_enough_v2 = !caches ||
 +    !(authdir_mode_any_main(options) || options->FetchV2Networkstatus) ||
      (networkstatus_v2_list &&
       smartlist_len(networkstatus_v2_list) > get_n_v2_authorities() / 2);
 }}}

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4838>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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