[tor-bugs] #25886 [Core Tor/Tor]: Have frac_nodes_with_descriptors() take and use for_direct_connect

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#25886: Have frac_nodes_with_descriptors() take and use for_direct_connect
-------------------------------------------------+-------------------------
 Reporter:  nickm                                |          Owner:  neel
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.5.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-bridge-client, tor-guard,        |  Actual Points:
  bootstrap                                      |
Parent ID:                                       |         Points:
 Reviewer:  dgoulet                              |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by neel):

 Thank you for your response.

 I don't fully know what a "full descriptor" is. Does this mean that for
 bridges:
  * We have `node->ri` only? (based on `node_has_preferred_descriptor()`)
  * We have `node->ri`, `node->rs`, and `node->md`? (I am guessing this
 one)

 Also, I did not see any function in `bridges.h` which directly checks for
 full descriptors (or didn't see them if they were unobvious).

 The closest thing I saw were functions which get a list of bridges
 (`bridge_list_get()`) so then I get a `SMARTLIST`, and in each iteration
 get a `node_t` from the `bridge_info_t` and check for a full descriptor.
 Should I do this? If not, which function should I use?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25886#comment:13>
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