Unable to contact my own server
Hi, I git coned a repository from https://github.com/ros-industrial/uni.... when I tried to roslaunch the U5 robotic arm I got the following error:
Unable to contact my own server at [http://user-devil:45261/].
This usually means that the network is not configured properly.
A common cause is that the machine cannot ping itself. Please check
for errors by running:
ping user-devil
For more tips, please see
http://www.ros.org/wiki/ROS/NetworkSetup
The traceback for the exception was written to the log file
This error is not caused by the packages in the repository you've cloned.
It's a generic ROS error drawing attention to the fact that you've misconfigured your system.
Either your hostname isn't
user-devil
, you've hard-codedROS_MASTER_URI
to use that name, or you have a very strict firewall blocking all connections.So what can be done to fix this
Review the values you have set for
ROS_MASTER_URI
,ROS_IP
and/orROS_HOSTNAME
.Also: does a
ping user-devil
work?