[Bug 1112482] Re: autopkgtest - several tests failed with pycurl error: 23, Failed writing header

[Vincent Ladeuil]

Given that all (at first glance) pycurl tests fail, this is likely an
issue in pycurl rather than bzr.

More information can be collected by running the following on a setup
where the bug can be reproduced:

  bzr selftest -s bt.test_http  pycurl -Dhttp -Eallow_debug
 
-Dhttp will output more debug data (which could make some more tests fail if they don't expect that data but the point is to collect more data here ;)
-Eallow_debug is required to let 'selftest' propagate '-Dhttp'


** Changed in: bzr (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1112482

Title:
  autopkgtest - several tests failed with pycurl error: 23, Failed
  writing header

Status in “bzr” package in Ubuntu:
  Incomplete

Bug description:
  autopkgtest of bzr fails since Jan 25th with similar traceback:

  _StringException: log: {{{990.679  got pycurl error: 23, Failed
  writing header, (23, 'Failed writing header'), url:
  http://127.0.0.1:32769/a}}}

  Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/bzrlib/tests/test_http.py", line 799, in test_readv_out_of_order
      l = list(t.readv('a', ((1, 1), (9, 1), (0, 1), (3, 2))))
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/__init__.py", line 201, in _readv
      for cur_coal, rfile in self._coalesce_readv(relpath, coalesced):
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/__init__.py", line 293, in _coalesce_readv
      for c, rfile in get_and_yield(relpath, ranges):
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/__init__.py", line 256, in get_and_yield
      code, rfile = self._get(relpath, coalesced)
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/_pycurl.py", line 171, in _get
      return self._get_ranged(relpath, offsets, tail_amount=tail_amount)
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/_pycurl.py", line 239, in _get_ranged
      self._curl_perform(curl, header, ['Range: bytes=%s' % range_header])
    File "/usr/lib/python2.7/dist-packages/bzrlib/transport/http/_pycurl.py", line 392, in _curl_perform
      curl.perform()
  error: (23, 'Failed writing header')

  
  Furthermore the following message is reported to stderr:
  SystemError: bad format char passed to Py_BuildValue

  https://jenkins.qa.ubuntu.com/view/Raring/view/AutoPkgTest/job/raring-
  adt-bzr/

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: bzr 2.6.0~bzr6571-4ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-2.6-generic 3.8.0-rc4
  Uname: Linux 3.8.0-2-generic x86_64
  ApportVersion: 2.8-0ubuntu3
  Architecture: amd64
  Date: Fri Feb  1 14:04:51 2013
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: bzr
  UpgradeStatus: Upgraded to raring on 2012-01-31 (366 days ago)

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