[ros-users] rosjava xmlRpcPort issue

[Abhishek Verma]

Hi All,
My Issue get resolved.

I missed to add commons-codec-1.3.jar in my class path which was
resulting org.apache.commons.codec.DecoderException in
XmlRpcClientWorker.execute(final XmlRpcRequest pRequest,final AsyncCallback
pCallback).

As this code is using reflection to create a object (dont know why) but it
results corrupted node (NodeType) object in NodeClient(URI uri,
Class<NodeType> interfaceClass). (line 59).

I just printed Node object in constructor NodeClient() and
Its printing stacktrace of DecoderException. As I havent done much of
Reflection, dont know the reason.

Damon do you think this is a issue and should be fixed in code?

Can you add me as contributors in project? If yes I can digg down this issue
and look for fix.
Else I will like to proceed with just adding required library in path.

Thanks and Regards
Abhishek Verma


On Wed, Jun 8, 2011 at 3:19 PM, Abhishek Verma <toabhishekverma at gmail.com>wrote:

> Sorry Damon, My Mistake
> NodeConfiguration has member xmlRpcPort which is 0 by default.
> Its not set any where and is used to creare tcpRosBindAddress and passed to
> SlaveServer as a parameter.(See internal node constructor)
> SlaveServer is later using it to create TcpRosServer. and so on.
>
> Thanks and Regards
> Abhishek Verma
>
>
> On Wed, Jun 8, 2011 at 3:02 PM, Damon Kohler <damonkohler at google.com>wrote:
>
>> On Wed, Jun 8, 2011 at 3:56 PM, Abhishek Verma
>> <toabhishekverma at gmail.com> wrote:
>> > Hi Damon,
>> > There are no errors.
>>
>> Ok.
>>
>> > Talker is publishing message but Listener is not getting it.
>>
>> Can you see the messages using rostopic echo? What about if you use
>> roscore instead of the RosCore class in rosjava?
>>
>> > They are not in same channel I mean Listener and Talker cant reach each
>> > other.
>> > I suppose by giving same master uri, both should be able to communicate.
>>
>> Correct.
>>
>> > is xmlRpcPort is used in this communication?
>>
>> Which argument is it exactly you're asking about? I don't see it
>> specified in your code snippet.
>>
>> In general, a port argument of 0 means that the OS should pick an
>> available port to bind to.
>>
>> > Thanks and Regards
>> > Abhishek Verma
>> >
>> >
>> > On Wed, Jun 8, 2011 at 2:06 PM, Damon Kohler <damonkohler at google.com>
>> wrote:
>> >>
>> >> Hi,
>> >>
>> >> Could you add some additional information?
>> >>
>> >> Are you getting any errors? How about stack traces?
>> >>
>> >> Thanks,
>> >> Damon
>> >>
>> >> On Wed, Jun 8, 2011 at 2:59 PM, Abhishek Verma
>> >> <toabhishekverma at gmail.com> wrote:
>> >> > Hi Friends,
>> >> > I am new to Ros an rosjava and tying to do something on my PC.
>> >> > I am not sure its correct or not.
>> >> > I am using rosjava on my Linux (ubuntu 10.4).
>> >> > Currently I am trying to run rosjava alone. and trying to use Talker
>> and
>> >> > Listener example available in source.
>> >> > I am starting Ros core and talker and listener by following commands
>> >> > RosCore --
>> >> > rosCore = new RosCore(11311);
>> >> > nodeRunner = NodeRunner.createDefault();
>> >> > nodeRunner.run(rosCore, Lists.newArrayList("RosCore",
>> >> > "__master:=http://localhost:11311"));
>> >> > Talker
>> >> >  nodeRunner.run(new Talker(),Lists.newArrayList("talker",
>> >> > "__ip:=127.0.0.1",
>> >> > "__master:=http://localhost:11311"));
>> >> > Listener
>> >> >  nodeRunner.run(new Listener(),Lists.newArrayList("listener",
>> >> > "__ip:=127.0.0.1", "__master:=http://localhost:11311"));
>> >> > Publisher and subscriber are not able to communicate. AndI am trying
>> to
>> >> > understand why..
>> >> > I found that value of xmlRpcPort is 0 and not changed anywhere.
>> >> > Am I doing right thing by running rosjava alone?
>> >> > Is xmlRpcPort port need to set? whats is it for? I suppose it might
>> be
>> >> > for
>> >> > remote communication with RcpCore (or MasterServer)
>> >> > in my case rosroot and ros package paths are empty...is that ok?
>> >> > Thanks and Regards
>> >> > Abhishek Verma
>> >> >
>> >> > _______________________________________________
>> >> > ros-users mailing list
>> >> > ros-users at code.ros.org
>> >> > https://code.ros.org/mailman/listinfo/ros-users
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> ----------------------------------------------
>> >> Damon Kohler
>> >> Software Engineer
>> >>
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>>
>>
>> --
>> ----------------------------------------------
>> Damon Kohler
>> Software Engineer
>>
>> Google Germany GmbH
>> Dienerstr. 12
>> 80331 München
>> ----------------------------------------------
>> AG Hamburg, HRB 86891
>> Sitz der Gesellschaft: Hamburg
>> Geschäftsführer: John Herlihy, Graham Law, Lloyd Martin, Kent Walker
>> ----------------------------------------------
>> Diese E-Mail ist vertraulich. Wenn Sie nicht der richtige Adressat
>> sind, leiten Sie diese bitte nicht weiter, informieren den Absender
>> und löschen Sie die E-Mail und alle Anhänge. Vielen Dank.
>>
>> This email is confidential. If you are not the right addressee please
>> do not forward it, please inform the sender, and please erase this
>> e-mail including any attachments. Thanks.
>> _______________________________________________
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>
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