| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
Hi!
I have a single publisher and a single subscriber. The publisher is publishing at short intervals. Is there ensured that the messages arrive in order or do i have to care about it myself? Is there an option to force sending in order?
Thanks! Jonas
For a single publisher single subscriber system they should all be ordered, but not guaranteed to all be there depending on your queue size. If you have multiple publishers the should be relative ordering from the individual publisher, but no guarantees between two publishers on ordering.
Since traffic is exchanged using (persistent) TCP channels (might not be true for all) messages arrive in order by nature. You can also add a Header in the message type which contains a sequence number in order to prove this fact although not necessary.
Asked: 2012-10-24 10:36:49 -0500
Seen: 2,194 times
Last updated: Oct 24 '12
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
