[tor-bugs] #28912 [Core Tor/Tor]: Stream hangs while downloading consensus via RELAY_BEGIN_DIR

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#28912: Stream hangs while downloading consensus via RELAY_BEGIN_DIR
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 Reporter:  plcp`         |          Owner:  dgoulet
     Type:  defect        |         Status:  accepted
 Priority:  Very High     |      Milestone:  Tor: 0.4.0.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  regression    |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Changes (by dgoulet):

 * keywords:   => regression
 * status:  needs_information => accepted
 * owner:  (none) => dgoulet
 * priority:  Medium => Very High


Comment:

 Ok this is not #27750 ... and after initial analysis of the 035 logs
 provided, seems tor initially sends the directory data and then for some
 reasons looses track of the connection leading to it just hanging there
 without sending the remaining of the spooled directory data.

 The `chan=49` is a good example of a buggy one where `chan=47` is working
 properly delivering ~2MB of data.

 More debugging is needed... I'm bumping priority and flagging as a
 possible regression since this seems to be affecting only >= 034. Once we
 figure out the issue, we'll decide on backport or not.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28912#comment:5>
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