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ROS multi-machine communication failure: invalid master URI

asked 2018-06-10 03:51:50 -0500

Seagull gravatar image

updated 2018-06-10 05:07:53 -0500

jayess gravatar image

Hi, I have set up ROS to communicate between my robot (using raspberry pi) and my laptop. It worked for a period of time but somehow stopped working suddenly. The reported error is:

invalid master URI:192.168.43.244:11311
The traceback for the exception was written to the log file

Please note that the procedures I took for ROS master and slave to communicate should have been correct or I wouldn' t have succeeded in the first few times.

I can not find any related information for this problem, so someone who has an idea please tell me what is going wrong and how I can fix this please. Thanks.

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answered 2018-06-10 05:04:20 -0500

gvdhoorn gravatar image
invalid master URI:192.168.43.244:11311

If this is a copy-paste, then it's indeed an invalid URI, as it doesn't include the protocol part. It should probably be:

http://192.168.43.244:11311

It worked for a period of time but somehow stopped working suddenly.

That would seem rather strange: unless you have someone else editing your files, the http:// part would have to have dropped of on its own.

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This solves the problem. My fault. I forgot to add http:// in the latter times.

Seagull gravatar image Seagull  ( 2018-06-10 05:31:28 -0500 )edit

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Asked: 2018-06-10 03:51:50 -0500

Seen: 588 times

Last updated: Jun 10 '18