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Identity of message publisher

asked 2015-08-19 06:44:51 -0500

Mehdi.

flag of United Kingdom of Great Britain and Northern Ireland

3339 ●96 ●138 ●161 https://github.com/mehditlili

How to find out who published a message (node name), especially for the topic tf, where many nodes are publishing different transforms.

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answered 2015-08-19 07:01:58 -0500

Stefan Kohlbrecher

24361 ●173 ●299 ●444 https://www.energy-rob...

By using the MessageEvent callback signature you can use the getPublisher() function to retrieve the publisher name (in roscpp). The same appears to be possible in rospy by using Connection Information.

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I see that this doesn't work when using Connection Information and bags as the callerid will always be the rosbag player, is it the same case for cpp?

Mehdi. ( 2015-08-19 07:48:01 -0500 )edit

If you play back bags, rosbag effectively is the publisher. I think the connection header approach will therefore not work with rosbag. I'm not sure there is a way to recover the publisher id when playing back bagfiles (I guess not).

Stefan Kohlbrecher ( 2015-08-19 08:59:19 -0500 )edit

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Asked: 2015-08-19 06:44:51 -0500

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Last updated: Aug 19 '15

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