This is wrapped up in the concert shutdown procedure...some failure in the shutdown logic.
Happens occasionally, but not all the time.
[ERROR] [WallTime: 1393988634.198750] Gateway : unknown error on shutdown [][<class 'httplib.CannotSendRequest'>]
Traceback (most recent call last):
File "/opt/ros/indigo/lib/python2.7/dist-packages/rospy/impl/tcpros_service.py", line 618, in _handle_request
response = convert_return_to_response(self.handler(request), self.response_class)
File "/mnt/zaphod/code/ros/rocon/src/rocon_multimaster/rocon_gateway/src/rocon_gateway/gateway_node.py", line 206, in ros_service_shutdown
self._shutdown()
File "/mnt/zaphod/code/ros/rocon/src/rocon_multimaster/rocon_gateway/src/rocon_gateway/gateway_node.py", line 98, in _shutdown
self._gateway.shutdown()
File "/mnt/zaphod/code/ros/rocon/src/rocon_multimaster/rocon_gateway/src/rocon_gateway/gateway.py", line 82, in shutdown
self.master.unregister(registration)
File "/mnt/zaphod/code/ros/rocon/src/rocon_multimaster/rocon_gateway/src/rocon_gateway/master_api.py", line 387, in unregister
self._unregister_subscriber(node_master, registration.connection.xmlrpc_uri, registration.connection.rule.name)
File "/mnt/zaphod/code/ros/rocon/src/rocon_multimaster/rocon_gateway/src/rocon_gateway/master_api.py", line 445, in _unregister_subscriber
xmlrpcapi(xmlrpc_uri).publisherUpdate('/master', name, [])
File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.7/xmlrpclib.py", line 1578, in __request
verbose=self.__verbose
File "/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python2.7/xmlrpclib.py", line 1289, in single_request
self.send_request(h, handler, request_body)
File "/usr/lib/python2.7/xmlrpclib.py", line 1391, in send_request
connection.putrequest("POST", handler, skip_accept_encoding=True)
File "/usr/lib/python2.7/httplib.py", line 871, in putrequest
raise CannotSendRequest()
CannotSendRequest
[ERROR] [WallTime: 1393988634.200298] Error processing request:
None
[ERROR] [WallTime: 1393988634.200715] failed to externally shut down gateway/hub [service [/concert/gateway/shutdown] responded with an error: error processing request: ]
This is wrapped up in the concert shutdown procedure...some failure in the shutdown logic.
Happens occasionally, but not all the time.