[tor-bugs] #20667 [Core Tor/Tor]: Deprecate FetchUselessDescriptors, mentioning UseMicrodescriptors 0 in the message

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#20667: Deprecate FetchUselessDescriptors, mentioning UseMicrodescriptors 0 in the
message
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 Reporter:  teor          |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.0.0-alpha-dev
 Severity:  Normal        |     Resolution:
 Keywords:  easy, intro   |  Actual Points:
Parent ID:                |         Points:  0.5
 Reviewer:                |        Sponsor:
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Comment (by teor):

 Replying to [comment:7 arma]:
 > Replying to [comment:5 teor]:
 > > Do we need an option that makes a client fetch both full descriptors
 and microdescriptors?
 > > If not, this sounds like a sensible solution.
 >
 > Once upon a time, that option was called DirPort.
 >
 > Now I kind of assumed it would be what DirCache does, but looking at the
 code, maybe it isn't.
 >
 > What is the thing that makes relays fetch all the things? We should let
 people turn that on.

 Nothing, currently - they are all conditional.
 (Except for perhaps `DirPort 127.0.0.1:9999`, which is a sleazy hack.)

 I think we need a new option, which makes the following functions return
 true:
 directory_caches_unknown_auth_certs
 directory_caches_dir_info

 But doesn't change:
 dir_server_mode
 Because DirPort, BridgeRelay, and (usually) DirCache do that.

 Nor:
 directory_fetches_from_authorities
 Because FetchDirInfoEarly does that.

 And then we might want to review every use of dir_server_mode to see if we
 really meant to say one or the other of:
 directory_caches_unknown_auth_certs
 directory_caches_dir_info

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20667#comment:9>
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