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[tor-bugs] #32696 [Core Tor/Tor]: Recommend supported protocol versions based on 0.3.5.7



#32696: Recommend supported protocol versions based on 0.3.5.7
-------------------------+-------------------------------------------------
     Reporter:  teor     |      Owner:  (none)
         Type:  task     |     Status:  new
     Priority:  Medium   |  Milestone:  Tor: 0.4.3.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  043-can, auth-deploy-Feb-2020,
     Severity:  Normal   |  teor-backlog
Actual Points:  0.1      |  Parent ID:
       Points:  0.5      |   Reviewer:
      Sponsor:           |
-------------------------+-------------------------------------------------
 According to proposal 303, we recommend some protocol versions every time
 an LTS release is no longer supported:
 https://gitweb.torproject.org/torspec.git/tree/proposals/303-protover-
 removal-policy.txt#n18

 0.2.9.8 supported these protocol versions:
 https://gitweb.torproject.org/tor.git/tree/src/or/protover.c?h=tor-0.2.9.8#n283

 When 0.2.9 is no longer supported, the earliest stable LTS will be
 0.3.5.7, which supports these protocol versions:
 https://gitweb.torproject.org/tor.git/tree/src/core/or/protover.c?h=tor-0.3.5.7#n379

 Therefore, we should recommend these protocol versions for clients and
 relays:
 Cons=2
 Desc=2
 DirCache=2 *
 HSDir=2 *
 HSIntro=4 *
 HSRend=2
 Link=5 *
 LinkAuth=3 *
 Microdesc=2
 Relay=2

 The starred protovers are not supported by 0.2.9, so it will warn on
 bootstrap / consensus download.

 We can make that change in master here:
 https://gitweb.torproject.org/tor.git/tree/src/feature/dirauth/dirvote.c#n4630

 The required protocols must stay the same, I'll open another ticket for
 them.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32696>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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