[tor-bugs] #9346 [Tor]: Make Guard flag easier to get

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jul 30 15:17:37 UTC 2013

#9346: Make Guard flag easier to get
 Reporter:  hsn                       |          Owner:                  
     Type:  task                      |         Status:  new             
 Priority:  normal                    |      Milestone:  Tor: unspecified
Component:  Tor                       |        Version:                  
 Keywords:  tor-relay needs-proposal  |         Parent:                  
   Points:                            |   Actualpoints:                  
Changes (by nickm):

  * keywords:  => tor-relay needs-proposal
  * milestone:  => Tor: unspecified


 Right now, the Guard flag is supposed to be based on *fraction* of time up
 recently; restarting shouldn't affect it.

 From dir-spec.txt:

    "Guard" -- A router is a possible 'Guard' if its Weighted Fractional
    Uptime is at least the median for "familiar" active routers, and if
    its bandwidth is at least median or at least 250KB/s.

         To calculate weighted fractional uptime, compute the fraction
         of time that the router is up in any given day, weighting so that
         downtime and uptime in the past counts less.

         A node is 'familiar' if 1/8 of all active nodes have appeared more
         recently than it, OR it has been around for a few weeks.

 For information on the proposal process, see

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9346#comment:1>
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