There are some examples in the linux_networking stack. They are still
under heavy development, and not particularly simple, but should give
you the general idea.

C++
https://code.ros.org/svn/ros-pkg/stacks/linux_networking/trunk/wpa_supplicant_node/src/nodes/wpa_supplicant_node.cpp

Python
https://code.ros.org/svn/ros-pkg/stacks/linux_networking/branches/network_monitor_udp/nodes/udpmonsourcenode.py

On Fri, Sep 10, 2010 at 10:37 AM, Axelrod, Benjamin <baxelrod@irobot.com> wrote:
> I am a little disappointed in the actionlib tutorials (for boxturtle).  They
> all seem to demonstrate the same pattern, where the client blocks while the
> server is running.  Does anyone have any examples where the client actually
> subscribes to the Done, Active, and Feedback messages?  Ideally, the client
> would not simply call: client.waitForResult(), but instead use the full:
>
>
>
> sendGoal  (  const Goal &   goal,
>
>             SimpleDoneCallback  done_cb,
>
>             SimpleActiveCallback  active_cb,
>
>             SimpleFeedbackCallback  feedback_cb
>
> )
>
>
>
> I can’t figure out the proper function signature for the Done, Active, and
> Feedback callbacks.
>
>
>
> Thanks,
>
> -Ben
>
>
>
> --
>
> Ben Axelrod
>
> Research Scientist
>
> iRobot Corporation
>
> 8 Crosby Drive, Mail Stop 8-1
>
> Bedford, MA 01730
>
> (781) 430-3315 (Tel)
>
> (781) 960-2628 (Fax)
>
> baxelrod@irobot.com
>
>
>
> _______________________________________________
> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
>