[ros-users] Publisher/Subscriber Issue

[Josh Faust]

What language(s)?  Do the topics match?  Is it all on one machine?  What do
the log files say?  Do they work if you start them outside the launch file?

On Fri, Mar 5, 2010 at 11:21 AM, Robbie Plankenhorn
<rplankenhorn at gmail.com>wrote:

> I am trying to get a publisher/subscriber connection working within my own
> ros pkg and I am having issues.  I am able to get the talker/listener
> tutorial working but what I am doing is slightly different.
>
> I have an ros program that sets up a TCP socket and waits for a
> connection.  When the user sends the appropriate command on that socket, I
> want it to publish a message and that message is redirected to the other
> program.  Right now, everything starts using a launch file and when it
> starts, the publisher shows that there are 0 subscribers and the subscriber
> shows that there are 0 publishers.
>
> Are there any special timing conditions that I need to take into account?
> Is there anything else that I should look at?
>
> Thanks,
> Robbie
>
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