[tor-bugs] #4484 [Tor Directory Authority]: parameterize bandwidth cutoffs for Guard and Fast flags

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#4484: parameterize bandwidth cutoffs for Guard and Fast flags
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 Reporter:  arma                     |          Owner:                    
     Type:  enhancement              |         Status:  new               
 Priority:  normal                   |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Directory Authority  |        Version:                    
 Keywords:                           |         Parent:                    
   Points:                           |   Actualpoints:                    
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 Right now we guarantee the Fast flag to any node with (a hard-coded) 20KB
 of bandwidth, and guarantee the Guard flag to any node with (also hard-
 coded) 250KB of bandwidth.

 We should turn those into parameters, since the nice people doing Tor
 network simulations don't want to hack our code between sims when
 comparing values. We should do it in 0.2.2 so they can do simulations on
 stable Tor too.

 (In a later ticket I'm going to suggest that 20KB has become a dumb value
 for AuthDirFastGuarantee, but that's a bug, not this feature.)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4484>
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