I think this is the same ROS_IP/ROS_HOSTNAME bug that they're talking about
in another thread. From my diagnosis, I think it's a problem in roscpp.
I've reported it here: https://github.com/ros/ros_comm/issues/35

-Austin


On Thu, Dec 13, 2012 at 5:40 AM, Damon Kohler <damonkohler@google.com>wrote:

> Ah, sorry, I misunderstood.
>
> Perhaps the handshake is failing? Could you provide a wireshark dump
> of the Android app publishing to a roscpp subscriber? Be sure to
> include the negotiation phase.
>
> On Thu, Dec 13, 2012 at 2:32 PM, Marcus Liebhardt
> <marcus.liebhardt@rnd.yujinrobot.com> wrote:
> > On Thu, Dec 13, 2012 at 7:09 PM, Damon Kohler <damonkohler@google.com>
> > wrote:
> >>
> >> This may be a good question for http://answers.ros.org
> >
> >
> > Hmm, might be true. I was not sure, if it fits. Since it was working for
> > Fuerte, it might be a hidden Groovy bug.
> > I'll repost it there, if you like.
> >
> >>
> >>
> >>
> >> The first thing I would check is whether or not the message is
> >> actually making it over the network (e.g. wireshark). You could also
> >> try a simple rosjava subscriber. I can say, that this use case is used
> >> actively so it's likely a configuration problem.
> >
> >
> > The message does come through, since the rospy subscribers I have tested
> in
> > parallel are receiving the message. Only the roscpp callbacks are not
> > triggered.
> >
> > Marcus
> >
> >>
> >> On Thu, Dec 13, 2012 at 10:15 AM, Marcus Liebhardt
> >> <marcus.liebhardt@rnd.yujinrobot.com> wrote:
> >> > Another problem I ran into today:
> >> > When sending messages from an Android app (e.g. Turtlebot teleop
> sending
> >> > geometry_msgs/Twist), the callback of my roscpp subscriber didn't get
> >> > triggered.
> >> > I tested this with simple subscriber implementations in roscpp and
> rospy
> >> > in
> >> > parallel (plus rostopic echo, which is also implemented with rospy
> >> > AFAIK).
> >> > This only happened when sending from Android, so might be a bug there
> >> > (or
> >> > just because we currently can't recompile those apps). When sending
> from
> >> > another 2.Beta Groovy 64Bit Ubuntu machine, callbacks in both
> >> > implementations worked fine.
> >> >
> >> > If anybody knows further tests, with which I could narrow down the
> root
> >> > cause, please let me know!
> >> >
> >> > Thanks,
> >> > Marcus
> >> >
> >> > --
> >> > Marcus Liebhardt
> >> > Control Engineer
> >> > Yujin Robot
> >> > 주소: 대한민국 서울시 금천구 가산동 345-30 남성프라자 #601, 153-023.
> >> > Address: Door #601, Namsung-Plaza, 345-30 Gasan-dong, Guemcheon-gu,
> >> > Seoul,
> >> > 153-023, Republic of Korea
> >> > Website: http://www.yujinrobot.com
> >> > Email: marcus.liebhardt@yujinrobot.com
> >> > Phone: +82-70-46577073
> >> >
> >> > _______________________________________________
> >> > Ros-release mailing list
> >> > Ros-release@code.ros.org
> >> > https://code.ros.org/mailman/listinfo/ros-release
> >> >
> >>
> >>
> >>
> >> --
> >> :wq
> >>
> >> Google Germany GmbH
> >> Dienerstr. 12
> >> 80331 München
> >>
> >> AG Hamburg, HRB 86891
> >> Sitz der Gesellschaft: Hamburg
> >> Geschäftsführer: Graham Law, Katherine Stephens
> >>
> >> Tax ID:- 48/725/00206
> >> VAT ID:- DE813741370
> >
> >
> >
> >
> > --
> > Marcus Liebhardt
> > Control Engineer
> > Yujin Robot
> > 주소: 대한민국 서울시 금천구 가산동 345-30 남성프라자 #601, 153-023.
> > Address: Door #601, Namsung-Plaza, 345-30 Gasan-dong, Guemcheon-gu,
> Seoul,
> > 153-023, Republic of Korea
> > Website: http://www.yujinrobot.com
> > Email: marcus.liebhardt@yujinrobot.com
> > Phone: +82-70-46577073
>
>
>
> --
> :wq
>
> Google Germany GmbH
> Dienerstr. 12
> 80331 München
>
> AG Hamburg, HRB 86891
> Sitz der Gesellschaft: Hamburg
> Geschäftsführer: Graham Law, Katherine Stephens
>
> Tax ID:- 48/725/00206
> VAT ID:- DE813741370
> _______________________________________________
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