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We intermittently receive Internal Server Errors as UnreadablePostError reports from our instance (version 0.7.49).

We would really like to know the cause...

Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 105, in get_response
    response = middleware_method(request, callback, callback_args, callback_kwargs)

  File "/usr/local/lib/python2.7/dist-packages/askbot/middleware/cancel.py", line 5, in process_view
    if 'cancel' in request.REQUEST:

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 166, in _get_request
    self._request = datastructures.MergeDict(self.POST, self.GET)

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 180, in _get_post
    self._load_post_and_files()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 372, in _load_post_and_files
    self._post, self._files = QueryDict(self.body, encoding=self._encoding), MultiValueDict()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 328, in body
    self._body = self.read()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 384, in read
    return self._stream.read(*args, **kwargs)

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 98, in read
    result = self.buffer + self._read_limited()

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 92, in _read_limited
    result = self.stream.read(size)

UnreadablePostError: request data read error


<WSGIRequest
path:/questions/264/answer/,
GET:<QueryDict: {}>,
POST:<could not parse>,
COOKIES:{'_csrf': 'aTmumPmsilH2HR1HdxeUDp5o7j0yQG1m',
 'sessionid': 'a669f30152a30d14c4fd30d1ca107f47'},
META:{'CONTENT_LENGTH': '3940',
 'CONTENT_TYPE': 'application/x-www-form-urlencoded',
 'CONTEXT_PREFIX': '',
 'GATEWAY_INTERFACE': 'CGI/1.1',
 'HTTP_ACCEPT': 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*',
 'HTTP_ACCEPT_ENCODING': 'gzip, deflate',
 'HTTP_CONNECTION': 'Close',
 'HTTP_COOKIE': '_csrf=aTmumPmsilH2HR1HdxeUDp5o7j0yQG1m; sessionid=a669f30152a30d14c4fd30d1ca107f47',
 'HTTP_USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
 'PATH_INFO': u'/questions/264/answer/',
'SERVER_PORT': '80',
 'SERVER_PROTOCOL': 'HTTP/1.1',
 'SERVER_SIGNATURE': '',
 'SERVER_SOFTWARE': 'Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.4 mod_python/3.3.1 Python/2.7.6 OpenSSL/1.0.1f mod_wsgi/3.4',
 'mod_wsgi.application_group': 'community.econometrics.com|',
 'mod_wsgi.callable_object': 'application',
 'mod_wsgi.enable_sendfile': '0',
 'mod_wsgi.handler_script': '',
 'mod_wsgi.input_chunked': '0',
 'mod_wsgi.listener_host': '',
 'mod_wsgi.listener_port': '80',
 'mod_wsgi.process_group': 'askbot2',
 'mod_wsgi.queue_start': '1411818270996980',
 'mod_wsgi.request_handler': 'wsgi-script',
 'mod_wsgi.script_reloading': '1',
 'mod_wsgi.version': (3, 4),
 'wsgi.errors': <mod_wsgi.Log object at 0x7f409d3beb70>,
 'wsgi.file_wrapper': <built-in method file_wrapper of mod_wsgi.Adapter object at 0x7f409dfc8c60>,
 'wsgi.input': <mod_wsgi.Input object at 0x7f409d178fb0>,
 'wsgi.multiprocess': False,
 'wsgi.multithread': True,
 'wsgi.run_once': False,
 'wsgi.url_scheme': 'http',
 'wsgi.version': (1, 0)}>

We intermittently receive Internal Server Errors as UnreadablePostError reports from our instance (version 0.7.49).

We would really like to know the cause...

Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 105, in get_response
    response = middleware_method(request, callback, callback_args, callback_kwargs)

  File "/usr/local/lib/python2.7/dist-packages/askbot/middleware/cancel.py", line 5, in process_view
    if 'cancel' in request.REQUEST:

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 166, in _get_request
    self._request = datastructures.MergeDict(self.POST, self.GET)

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 180, in _get_post
    self._load_post_and_files()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 372, in _load_post_and_files
    self._post, self._files = QueryDict(self.body, encoding=self._encoding), MultiValueDict()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 328, in body
    self._body = self.read()

  File "/usr/local/lib/python2.7/dist-packages/django/http/__init__.py", line 384, in read
    return self._stream.read(*args, **kwargs)

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 98, in read
    result = self.buffer + self._read_limited()

  File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 92, in _read_limited
    result = self.stream.read(size)

UnreadablePostError: request data read error


<WSGIRequest
path:/questions/264/answer/,
GET:<QueryDict: {}>,
POST:<could not parse>,
COOKIES:{'_csrf': 'aTmumPmsilH2HR1HdxeUDp5o7j0yQG1m',
 'sessionid': 'a669f30152a30d14c4fd30d1ca107f47'},
META:{'CONTENT_LENGTH': '3940',
 'CONTENT_TYPE': 'application/x-www-form-urlencoded',
 'CONTEXT_PREFIX': '',
 'GATEWAY_INTERFACE': 'CGI/1.1',
 'HTTP_ACCEPT': 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*',
 'HTTP_ACCEPT_ENCODING': 'gzip, deflate',
 'HTTP_CONNECTION': 'Close',
 'HTTP_COOKIE': '_csrf=aTmumPmsilH2HR1HdxeUDp5o7j0yQG1m; sessionid=a669f30152a30d14c4fd30d1ca107f47',
 'HTTP_USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
 'PATH_INFO': u'/questions/264/answer/',
'SERVER_PORT': '80',
 'SERVER_PROTOCOL': 'HTTP/1.1',
 'SERVER_SIGNATURE': '',
 'SERVER_SOFTWARE': 'Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.4 mod_python/3.3.1 Python/2.7.6 OpenSSL/1.0.1f mod_wsgi/3.4',
 'mod_wsgi.application_group': 'community.econometrics.com|',
 'mod_wsgi.callable_object': 'application',
 'mod_wsgi.enable_sendfile': '0',
 'mod_wsgi.handler_script': '',
 'mod_wsgi.input_chunked': '0',
 'mod_wsgi.listener_host': '',
 'mod_wsgi.listener_port': '80',
 'mod_wsgi.process_group': 'askbot2',
 'mod_wsgi.queue_start': '1411818270996980',
 'mod_wsgi.request_handler': 'wsgi-script',
 'mod_wsgi.script_reloading': '1',
 'mod_wsgi.version': (3, 4),
 'wsgi.errors': <mod_wsgi.Log object at 0x7f409d3beb70>,
 'wsgi.file_wrapper': <built-in method file_wrapper of mod_wsgi.Adapter object at 0x7f409dfc8c60>,
 'wsgi.input': <mod_wsgi.Input object at 0x7f409d178fb0>,
 'wsgi.multiprocess': False,
 'wsgi.multithread': True,
 'wsgi.run_once': False,
 'wsgi.url_scheme': 'http',
 'wsgi.version': (1, 0)}>