[tor-bugs] #4539 [Tor Directory Authority]: Make dir auths write to disk digests that don't match

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#4539: Make dir auths write to disk digests that don't match
-------------------------------------+--------------------------------------
 Reporter:  ln5                      |          Owner:     
     Type:  defect                   |         Status:  new
 Priority:  normal                   |      Milestone:     
Component:  Tor Directory Authority  |        Version:     
 Keywords:                           |         Parent:     
   Points:                           |   Actualpoints:     
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 maatuska told me this the other day:

 {{{
 Nov 05 12:55:02.739 [warn] Unable to store signatures posted by
 128.31.0.34: Mismatched digest.
 }}}

 And Sebastian had the idea that we should teach directory authorities to
 save mismatched digests to disk so that we can investigate them.

 But before that, there was this log entry:

 {{{
 Nov 05 12:55:02.737 [warn] http status 400 ("Mismatched digest.") response
 after uploading signatures to dirserver '128.31.0.34:9131'. Please
 correct.
 and
 }}}

 This makes me think that this might not be some local trouble on
 maatuska but perhaps related to the communication between the
 authorities.  Broken TCP connection perhaps?

 Adding this option should be easy enough for it to be worth it even if
 we'll only find half a digest there or something so I say let's do it.

 BTW, #1890 saw quite a few mismatched digests too.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4539>
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