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In ROS network, when does a topic really transported?

network

asked 2014-07-06 01:56:01 -0500

Xegara
50 ●10 ●14 ●20

In a ROS system run across different computers in a network, when does a topic really being transported? Let's say in computer A, I publish 100 topics.. Do all the topics transported to all ROS device in the network? Or only the ROS nodes in different computers subscribed to a subset of topics should those subset of topics be transported??

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