Carter12s
rosnode info does not work
root@Moonboi:/# rosnode info /talker_rs
--------------------------------------------------------------------------------
Node [/talker_rs]
Publications:
* /my_point [geometry_msgs/PointStamped]
Subscriptions: None
Services: None
contacting node http://Moonboi:32975 ...
Traceback (most recent call last):
File "/opt/ros/noetic/bin/rosnode", line 35, in <module>
rosnode.rosnodemain()
File "/opt/ros/noetic/lib/python3/dist-packages/rosnode/__init__.py", line 812, in rosnodemain
sys.exit(_rosnode_cmd_info(argv) or 0)
File "/opt/ros/noetic/lib/python3/dist-packages/rosnode/__init__.py", line 640, in _rosnode_cmd_info
rosnode_info(node, options.quiet)
File "/opt/ros/noetic/lib/python3/dist-packages/rosnode/__init__.py", line 598, in rosnode_info
print(get_node_connection_info_description(node_api, master))
File "/opt/ros/noetic/lib/python3/dist-packages/rosnode/__init__.py", line 537, in get_node_connection_info_description
businfo = _succeed(node.getBusInfo(ID))
File "/usr/lib/python3.8/xmlrpc/client.py", line 1109, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python3.8/xmlrpc/client.py", line 1450, in __request
response = self.__transport.request(
File "/usr/lib/python3.8/xmlrpc/client.py", line 1153, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python3.8/xmlrpc/client.py", line 1183, in single_request
raise ProtocolError(
xmlrpc.client.ProtocolError: <ProtocolError for Moonboi:32975/RPC2: 501 Not Implemented>
DEBUG [roslibrust::ros1::node::xmlrpc] New node xmlrpc connection AddrStream { inner: PollEvented { io: Some(TcpStream { addr: 127.0.1.1:32975, peer: 127.0.0.1:34936, fd: 12 }) }, remote_addr: 127.0.0.1:34936, local_addr: 127.0.1.1:32975 }
DEBUG [roslibrust::ros1::node::xmlrpc] getPid called by [String("/rosnode")]
WARN [roslibrust::ros1::node::xmlrpc] Client attempted call function getBusInfo which is not implemented by the Node's xmlrpc server.
Decide if we want to support getBusInfo
If we decide to not support (maybe only Python nodes support?) we should figure out what the C++ nodes respond with and respond with the same things so rosnode info doesn't crash.
@DiracFermi1411
This may be a good issue for you to try tackling while we get a little more organized on the ROS2 implementation front.
This issue will get you inside the internals of our ROS1 backend so you can see how things are plumbed out, and what we might have to build for ROS2.
If you look inside https://github.com/RosLibRust/roslibrust/blob/master/roslibrust_ros1/src/node/xmlrpc.rs you'll see that we have no implementation of "getBusInfo" or "getBusStats" which is probably what is causing rosnode info to crash on our node. I think if we even sent back dummy payloads it would improve the situation, but ideally we could actually reply correctly with the state of our connections. Providing a "correct" response may involve some significant changes so I would start with setting up a dummy response and setting up an integration test that invokes rosnode info via the command line.