[tor-bugs] #23818 [Core Tor/Tor]: Make v2 and v3 single onion services retry all failed intro and rend connections with a 3-hop path

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#23818: Make v2 and v3 single onion services retry all failed intro and rend
connections with a 3-hop path
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  teor
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.2.9.3-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  consider-backport-after-0421-alpha,  |  Actual Points:  0.2
  029-backport-maybe-not, 035-backport,          |
  040-baclport, 041-backport, v3-onion-service-  |
  feature-parity, prop224, tor-hs, single-       |
  onion, ipv6, network-team-roadmap-august       |
Parent ID:  #23493                               |         Points:  1
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor27-must
-------------------------------------------------+-------------------------

Comment (by teor):

 I added the code for #23507 to the 0.3.5 branch, and merged it forward to
 master. They both changed the same lines in one function, so there would
 have been conflicts otherwise.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23818#comment:25>
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