[tor-bugs] #2963 [Metrics]: Instrument Tor client to count directory requests and bridge connections

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#2963: Instrument Tor client to count directory requests and bridge connections
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 Reporter:  karsten  |          Owner:  karsten
     Type:  task     |         Status:  new    
 Priority:  normal   |      Milestone:         
Component:  Metrics  |        Version:         
 Keywords:           |         Parent:         
   Points:           |   Actualpoints:         
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 When estimating user numbers, we have to make assumptions a) on the number
 of directory requests that an average user makes and b) on the average
 number of bridge connections that a bridge client opens.

 We should instrument a Tor client to log all directory requests and bridge
 connections, so that we can derive better data from these logs.  In fact,
 the info-level logs of the Tor clients that we use for Torperf may already
 tell us something about directory requests.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2963>
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