exception: CannotSendRequest in update_performance

[gaserre]

Every once in a while, I get the following exception. Synchronization required, or maybe catch and retry later? I'll see if I can come up with a patch.

Exception in thread Thread-19:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "./src/OXM/oxcSERVER.py", line 479, in update_performance
    data_sources = self.connection.VM.get_data_sources(self.session_uuid, ref)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1233, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1591, in __request
    verbose=self.__verbose
  File "/usr/lib/python2.7/xmlrpclib.py", line 1273, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1298, in single_request
    self.send_request(h, handler, request_body)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1400, in send_request
    connection.putrequest("POST", handler, skip_accept_encoding=True)
  File "/usr/lib/python2.7/httplib.py", line 921, in putrequest
    raise CannotSendRequest()
CannotSendRequest