Running ROS across multiple machines [closed]

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There is at least one important limitation related to message definitions. If node_a running on machine (A) publishes a topic with message definition message_a, and then node_b subscribes to this topic on machine (B), then the client library behind node_b needs the definition of message_a

In C++, this is generally easy to detect as an issue because your code won't compile without the necessary headers in your workspace. In Python however, missing message definitions would result in a runtime error. Note that the message definitions must also be the same between machines.

This is one primary issue with running different ROS versions across multiple machines. If the versions don't have the same message definitions, you will end up with checksum mismatches.

@jarvisschultz jep that's correct. That is in fact a limitation. If you want to "communicate" with that node, you need to have the messages (same version). Didn't thought of that one, but you are right. I was just assuming the same versions and standard messages.

Thank you!

Could also accept the answer (round icon with the hook inside beside the question) and close the question (Under your question (X Close) )? Thanks.

I dont have the option to accept. Possible because im new to this.