[tor-bugs] #6772 [Core Tor/Tor]: Fall back to alternative OR or Dir port if the current fails

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Dec 1 13:06:18 UTC 2017


#6772: Fall back to alternative OR or Dir port if the current fails
-------------------------------------------------+-------------------------
 Reporter:  ln5                                  |          Owner:  (none)
     Type:  enhancement                          |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ipv6 tor-client tor-hs single-onion  |  Actual Points:
  robustness address-handling                    |
Parent ID:  #17835                               |         Points:  1
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorV-can
-------------------------------------------------+-------------------------
Changes (by teor):

 * keywords:  ipv6 tor-client robustness address-handling => ipv6 tor-client
     tor-hs single-onion robustness address-handling
 * priority:  Low => Medium
 * points:   => 1
 * sponsor:   => SponsorV-can
 * parent:  #17811 => #17835


Comment:

 Existing client guard code already implements this feature by trying
 another guard if one fails.
 #24403 will make relays retry IPv4 and IPv6 when an EXTEND has both
 addresses.
 #17835 should do the same for client connections to entry nodes.
 (If a specific entry node is required (single onion services only?), we
 should choose an available address at random. If not, we should do what
 the existing guard code does, and choose another entry node at random -
 because we are more likely to succeed than a retry.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6772#comment:9>
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