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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: keystone
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1346211

Title:
  keystone under apache can't handle request chunking

Status in OpenStack Identity (Keystone):
  Fix Released

Bug description:
  Method to reproduce stack trace for apache config with chunking enabled
  ========================================================

  1.  If using devstack, configure it to enable chunking in apache, by
  adding "WSGIChunkedRequest On" in the file devstack/files/apache-
  keystone.template (in both sections) and start devstack

  2.  Run from the command line:

  openstack -v --debug server list  (or any simple command)

  3.  Look in the output for the very first "curl" command that looks
  something like this:

  curl -i --insecure -X POST http://192.168.51.21:5000/v2.0/tokens -H
  "Content-Type: application/json" -H "Accept: application/json" -H
  "User-Agent: python-keystoneclient" -d '{"auth": {"tenantName":
  "demo", "passwordCredentials": {"username": "demo", "password":
  "admin"}}}'

  4.  The above "curl" command succeeds.  Modify it to use chunking by
  adding -H "Transfer-Encoding: chunked" and run it:

  curl -i --insecure -X POST http://192.168.51.21:5000/v2.0/tokens -H
  "Content-Type: application/json" -H "Accept: application/json" -H
  "User-Agent: python-keystoneclient" -H "Transfer-Encoding: chunked" -d
  '{"auth": {"tenantName": "demo", "passwordCredentials": {"username":
  "demo", "password": "admin"}}}'

  5.  You will get a cli error:

  HTTP/1.1 500 Internal Server Error
  Date: Wed, 16 Jul 2014 19:01:58 GMT
  Server: Apache/2.2.22 (Ubuntu)
  Vary: X-Auth-Token
  Content-Length: 215
  Connection: close
  Content-Type: application/json

  {"error": {"message": "An unexpected error prevented the server from
  fulfilling your request: request data read error (Disable debug mode
  to suppress these details.)", "code": 500, "title": "Internal Server
  Error"}}

  6.  The keystone log will show a stack trace:

  [Wed Jul 16 19:02:43 2014] [error] 13693 ERROR keystone.common.wsgi [-] request data read error
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi Traceback (most recent call last):
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/opt/stack/keystone/keystone/common/wsgi.py", line 414, in __call__
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     response = self.process_request(request)
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/opt/stack/keystone/keystone/middleware/core.py", line 112, in process_request
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     params_json = request.body
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/usr/local/lib/python2.7/dist-packages/webob/request.py", line 677, in _body__get
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     self.make_body_seekable() # we need this to have content_length
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/usr/local/lib/python2.7/dist-packages/webob/request.py", line 922, in make_body_seekable
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     self.copy_body()
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/usr/local/lib/python2.7/dist-packages/webob/request.py", line 938, in copy_body
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     self.body = self.body_file_raw.read()
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi   File "/opt/stack/keystone/keystone/common/utils.py", line 306, in read
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi     result = self.data.read()
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi IOError: request data read error
  [Wed Jul 16 19:02:43 2014] [error] 13693 TRACE keystone.common.wsgi

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