[tor-bugs] Re: #1567 [Tor - Metrics]: Find a good estimate for Tor versions run by clients

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#1567: Find a good estimate for Tor versions run by clients
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 Reporter:  karsten        |       Owner:  karsten                           
     Type:  task           |      Status:  new                               
 Priority:  normal         |   Milestone:  Calculate directory request shares
Component:  Tor - Metrics  |     Version:                                    
 Keywords:                 |      Parent:                                    
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Comment(by nickm):

 I bet client uptake follows really different patterns from server uptake.

 We could look for subtle differences in client behavior, I suppose, so
 long as we do it passively.  For instance, using RELAY_EARLY cells means
 that we're seeing a 0.2.1.x client or later (I believe, assuming I'm
 reading the changelog right).  There may also be detectable differences in
 the TLS handshake, though I'm not seeing anything obvious that lets us
 tell 0.2.2.x from the others in the ChangeLog.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1567#comment:1>
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