setNodeName in C++

asked 2012-09-04 15:14:19 -0500

sthunt
1 ●1 ●2

updated 2012-09-04 15:25:58 -0500

Hi,

Please pardon me if this is a stupid question. It has been a while since I have used ROS. I have a talker/listener framework setup, but ideally, I would like to have one talker communicate with multiple listeners using the same codebase (by changing the name of the listener node with an argument). When I try to run multiple listeners now, the listener that was active shutdowns because "a new node registered with the same name".

I see here: http://answers.ros.org/question/33358/node-name-collision-with-multiple-talker-node-instances/ that it was a similar problem and the answer was to set the name using a node configuration.

I am trying to write this in C++ and I searched through all of my header files, but I do not see that function anywhere. I see that function mentioned in rosjava (http://www.roschina.net/ros/www.ros.org/wiki/doc/api/rosjava/html/classorg_1_1ros_1_1node_1_1NodeConfiguration.html).

Thank you very much.

Shawn

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answered 2012-09-04 22:00:57 -0500

weiin
2268 ●26 ●46 ●65

A few ways to do it, one of the better ones is to anonymize the node name as mentioned by Dan in the link you provided. See http://www.ros.org/wiki/roscpp/Overview/Initialization%20and%20Shutdown#Initialization_Options

You could also hardcode different names for each listener (not good idea since you'll have multiple source code doing essentially the same thing), or remap the node name at runtime. See http://www.ros.org/wiki/roscpp/Overview/Initialization%20and%20Shutdown#Initializing_the_roscpp_Node