[root@localhost ~]# vdsClient 0 getVdsCaps
Traceback (most recent call last):
  File "/usr/share/vdsm/vdsClient.py", line 2275, in <module>
    code, message = commands[command][0](commandArgs)
  File "/usr/share/vdsm/vdsClient.py", line 403, in do_getCap
    return self.ExecAndExit(self.s.getVdsCapabilities())
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1224, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1578, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1264, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib64/python2.7/xmlrpclib.py", line 1294, in single_request
    response = h.getresponse(buffering=True)
  File "/usr/lib64/python2.7/httplib.py", line 1030, in getresponse
    response.begin()
  File "/usr/lib64/python2.7/httplib.py", line 407, in begin
    version, status, reason = self._read_status()
  File "/usr/lib64/python2.7/httplib.py", line 371, in _read_status
    raise BadStatusLine(line)
BadStatusLine: ''