[tor-bugs] #27104 [Core Tor/Tor]: report intermediate status when building application circuits

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#27104: report intermediate status when building application circuits
-------------------------------------------------+-------------------------
 Reporter:  catalyst                             |          Owner:
                                                 |  catalyst
     Type:  enhancement                          |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  usability, ux, ux-team, bootstrap,   |  Actual Points:
  035-roadmap-subtask, 035-triaged-in-20180711,  |
  s8-bootstrap                                   |
Parent ID:  #28018                               |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor8-can
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Comment (by catalyst):

 #27167 makes this easier by adding the bootstrap tracker subsystem.  Right
 now we don't quite have all the right data in the origin circuit events to
 make this incremental application circuit progress reporting work.  Some
 approaches include adding more status events, or reporting the count of
 established circuit hops with each `EXTEND` event.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27104#comment:8>
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