[tor-bugs] #22502 [Core Tor/Tor]: Investigate Zstandard decompression error

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jun 20 14:38:55 UTC 2017


#22502: Investigate Zstandard decompression error
-----------------------------+------------------------------------
 Reporter:  ahf              |          Owner:  nickm
     Type:  defect           |         Status:  assigned
 Priority:  Medium           |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor     |        Version:  Tor: 0.3.1.2-alpha
 Severity:  Normal           |     Resolution:
 Keywords:  review-group-18  |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:  Sponsor4
-----------------------------+------------------------------------

Comment (by nickm):

 So, I see those warnings happening still, but they happen as part of this:
 {{{
 Jun 20 10:35:55.522 [info] HTTP body from server '127.0.0.1:7000' was
 labeled as Zstandard compressed, but it seems to be deflated.  Trying
 both.
 Jun 20 10:35:55.522 [warn] Zstandard decompression didn't finish: Unknown
 frame descriptor.
 Jun 20 10:35:55.522 [warn] Error while uncompresing data: bad input?
 Jun 20 10:35:55.522 [info] handle_response_fetch_status_vote(): Got votes
 (body size 10366) from server 127.0.0.1:7000
 }}}

 To me that looks as if we tried with both zstd and deflate, and zstd
 failed, and deflate succeeded?  I'll add more logs and try again.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22502#comment:10>
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