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Is it possible to subscribe the same topic twice?

asked 2019-09-14 00:47:06 -0600

kane_choigo
195 ●52 ●70 ●81

Hi, i'm working on ROS kinetic with Ubuntu 16.04.

I just wonder whether I can subscribe same topic by two or more Subscribers.

For example, once i run turtlebot bringup pkg, many other topics should be published.

In this situation, can i subscribe the same Odom topic at node_A and node_B simultaneously??

Thanks in advance. :)

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answered 2019-09-14 01:19:18 -0600

billy
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Yes. Multiple nodes can subscribe to the same topic. Multiple nodes can publish to the same topic.

I believe that each subscriber gets it's own buffer so there is no worry that one subscriber will get one message and the other subscriber will miss it - and if I'm wrong about that, I'm sure someone will be along shortly to correct me.

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Asked: 2019-09-14 00:47:06 -0600

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Last updated: Sep 14 '19

Is it possible to subscribe the same topic twice? edit

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Is it possible to subscribe the same topic twice?