[tor-bugs] #12206 [Tor]: Switch to one guard per client

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#12206: Switch to one guard per client
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     Reporter:  asn      |      Owner:
         Type:  defect   |     Status:  new
     Priority:  normal   |  Milestone:  Tor: 0.2.6.x-final
    Component:  Tor      |    Version:
   Resolution:           |   Keywords:  tor-client, prop236, tor-guard,
Actual Points:           |  026-triaged-1
       Points:           |  Parent ID:  #11480
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Comment (by asn):

 To proceed with this we will need to decide what to do with regards to
 directory guards:
 https://lists.torproject.org/pipermail/tor-dev/2014-June/006944.html

 We probably need to switch `NumEntryGuards` to `1` and pump up
 `NumDirectoryGuards` to `3`, to follow Nick's suggestion. At the same time
 we need to start thinking of the ideas from here:
 https://lists.torproject.org/pipermail/tor-dev/2014-June/006944.html
 in case we can eventually bring the number of directory guards to 1 too.

 Also, maybe we should add more code to *strictly* prefer our circuit guard
 to fetch directory documents, and only resort to the directory guards if
 our circuit guard is not a DirCache or if it doesn't have the descriptor
 we asked for.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12206#comment:5>
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