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message size limit

asked 2015-04-24 07:34:38 -0500

Wolf

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In one of my nodes I get in a service call

a message of over a gigabyte was predicted in tcpros. that seems highly unlikely, so I'll assume protocol synchronization is lost.

In this case the msg is really 1+ Gig. Is is possible to increase the messages size limit temporary for this service call?

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WTF? 1 Gigabyte? What are you transmitting there?

cyborg-x1 ( 2015-04-24 08:08:51 -0500 )edit

is kind of a map stitched from many images, sent once from the node that creates is to the node that uses it

Wolf ( 2015-04-26 06:44:08 -0500 )edit

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answered 2015-04-25 02:31:58 -0500

ahendrix

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The message size limit in ROS is hardcoded. It should be possible to change it, but you'll need to modify roscpp and recompile it to do so.

A quick search on github turns up four locations that might be producing your error message: https://github.com/ros/ros_comm/searc...

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Thank you for the hint! I managed to compress the data before transferring it, which works around the issue as well....

Wolf ( 2015-04-26 06:44:49 -0500 )edit

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Asked: 2015-04-24 07:34:38 -0500

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Last updated: Apr 25 '15

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