[tor-bugs] #20699 [Core Tor/Tor]: prop224: Add control port events and commands

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#20699: prop224: Add control port events and commands
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 Reporter:  dgoulet                              |          Owner:  (none)
     Type:  enhancement                          |         Status:  new
 Priority:  Very High                            |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, needs-proposal,              |  Actual Points:
  prop224-extra, tor-control                     |
Parent ID:                                       |         Points:  6
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorR-must
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Comment (by meejah):

 Two points:

 - for ADD_ONION, yes a similar key-format would be good. Since the prop224
 keys right now are binary-data I don't believe that will work **at all**
 in the control-protocol since AFAIK encoding isn't explicit anywhere (e.g.
 everything must be ASCII as far as I can tell) so e.g. base32, base64 or
 hex encoding would be way more likely to work with existing controllers.
 Also easier for people to copy-pasta

 - it would be Really Great if there was a way for a controller to discover
 if version3/prop224 services are supported in the connected Tor (e.g. a
 "getinfo"); checking version-numbers is tedious and IMO prone to failure
 and weirdness.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20699#comment:9>
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