[tor-bugs] #33407 [Core Tor/Tor]: Make chutney bridge authorities publish bridges in their networkstatus-bridges

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#33407: Make chutney bridge authorities publish bridges in their networkstatus-
bridges
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 Reporter:  teor                                 |          Owner:  (none)
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.4.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ipv6, prop311, tor-bridge, chutney,  |  Actual Points:
  outreachy-ipv6                                 |
Parent ID:  #33050                               |         Points:  1
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor55-can
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Description changed by teor:

Old description:

> This chutney fix is blocked by a tor bridge bootstrap / descriptor upload
> race condition, see #33582.
>
> (Chutney may need to check for this tor bug fix. One way to do that is to
> modify the tor version EXTRA_INFO so it is sortable, see #33408.)
>
> Chutney bridge authorities don't have any bridges in their networkstatus-
> bridges. That's a problem, because we want to check networkstatus-bridges
> for the reachability checks in #33232.
>
> Here's what we need to do:
> * fix bugs in tor or chutney that stop bridges posting their descriptors
> to the bridge authority (#33582)
> * fix bugs in tor or chutney that stop the bridge authority writing
> bridges to the networkstatus (maybe it doesn't respect AssumeReachable?)
> * grep the bridge's logs for its reachability tests
>
> If we end up fixing tor, chutney will need to know which tor versions
> have these fixes (otherwise old branches will fail CI). So we may need
> some kind of environmental variable, tag, or version update. (See
> #33408.)
>
> We don't have to do these fixes, because it should be enough to test
> relay reachability. But we would risk breaking bridge reachability tests,
> and not knowing about it until after a release.

New description:

 This chutney fix is blocked by a tor bridge bootstrap / descriptor upload
 race condition, see #33582.

 (Chutney may need to check for this tor bug fix. One way to do that is to
 modify the tor version EXTRA_INFO so it is sortable, see #33408.)

 Chutney bridge authorities don't have any bridges in their networkstatus-
 bridges. That's a problem, because we want to check networkstatus-bridges
 for the reachability checks in #33232.

 There are two different ways to fix this issue:
 1. Implement the robust ORPort reachability self-tests in #33222. Bridges
 bootstrap, self-test reachability, and then publish their descriptors.

 2. Make bridge descriptor upload wait until the bridge has bootstrapped in
 #33582. Bridges bootstrap, then publish their descriptors.

 Once bridges upload their descriptors, we can make chutney check the
 bridge authority's networkstatus-bridges for bridge nicknames (this
 ticket).

 We can only do the networkstatus-bridges check on tor versions with the
 #33222 or #33582 fixes. If we want to do these tests before an 0.4.4-alpha
 release, we can:
 * implement ordered version EXTRA_INFO in #33408,
 * check for a log message that we add to tor during the fix, or
 * set an environmental variable.

 Whatever we do, we should also check for the next 0.4.4-alpha release, so
 we don't depend on these implementation details.

 We don't have to do these fixes, because it should be enough to test relay
 reachability. But we would risk breaking bridge reachability tests, and
 not knowing about it until after a release.

--

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33407#comment:10>
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