[tor-bugs] #17120 [Tor]: Fire a circuit status control port event when circuit isolation changes.

[Tor Bug Tracker & Wiki]

#17120: Fire a circuit status control port event when circuit isolation changes.
------------------------------------------+--------------------------------
 Reporter:  yawning                       |          Owner:
     Type:  enhancement                   |         Status:  new
 Priority:  minor                         |      Milestone:  Tor:
Component:  Tor                           |  0.2.8.x-final
 Keywords:  tor-core, control port, easy  |        Version:
Parent ID:                                |  Actual Points:
                                          |         Points:
------------------------------------------+--------------------------------
 Followup from #17086.

 Currently trying to track circuit isolation status via control port events
 is non-trivial/impossible without polling due to predictive circuits and
 other non-SOCKS initiated circuits being used to service SOCKS requests.

 The current behavior is correct according to the control port spec, since
 the username/password are only provided when the circuit was initiated via
 a SOCKS request, and is silent about `BUILT` circuits being used to
 immediately service a request.

 This *should* be easy to do, but requires a control spec change and is an
 enhancement so it's a 0.2.8.x thing at the earliest.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17120>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online