network pub/sub or messaging example, or documentation?

asked 2011-03-12 07:06:26 -0600

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Is there a simple example anywhere of two nodes on separate physical hardware exchanging data (messages or pub/sub data) via network protocols? Thanks!

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answered 2011-03-12 07:31:04 -0600

This post is a wiki. Anyone with karma >75 is welcome to improve it.

This is transparently handled by ros. You just need to set the ROS_MASTER_URI environment variable on both machines to point to the one where you start the roscore.

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Fantastic, thanks!

nzc ( 2011-03-12 07:46:24 -0600 )edit

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answered 2011-03-12 15:39:30 -0600

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This tutorial walks through running a single ROS computational graph over multiple machines: http://www.ros.org/wiki/ROS/Tutorials/MultipleMachines

You may also be interested in the tutorial on advanced usage of roslaunch (which might help if you frequently bring up nodes on several machines) http://www.ros.org/wiki/ROS/Tutorials/Roslaunch%20tips%20for%20larger%20projects

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network pub/sub or messaging example, or documentation?

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network pub/sub or messaging example, or documentation?