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roslaunch and ports [closed]

asked 2012-10-26 03:45:57 -0500

SL Remy
2022 ●26 ●49 ●67

I may be missing something, but if it's possible to start roslaunch (roscore) on a specific port.. shouldn't it be possible/necessary to pass a port to tools like rostopic so they can communicate with the "right" ros graph?

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Closed for the following reason the question is answered, right answer was accepted by SL Remy
close date 2013-01-30 11:26:02

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answered 2012-10-26 04:21:18 -0500

Lorenz

22731 ●129 ●202 ●316 http://ias.in.tum.de/p...

That's what ROS_MASTER_URI is for. You can start roscore on a different port with the --port parameter, e.g.:

roscore --port=11411

Then set the ROS_MASTER_URI to the new URI:

export ROS_MASTER_URI=http://localhost:11411

Now, all ros nodes should contact the core on port 11411. That way, you can run several ros cores on the same machine.

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Ah yes.. thanks.. not sure why I forgot about the env var.. but this is how I'd use it (for reference) ROS_MASTER_URI=http://localhost:11411 rostopic list

SL Remy ( 2012-10-26 09:19:40 -0500 )edit

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Asked: 2012-10-26 03:45:57 -0500

Seen: 1,282 times

Last updated: Oct 26 '12

roslaunch and ports [closed] edit

Closed for the following reason the question is answered, right answer was accepted by SL Remy close date 2013-01-30 11:26:02