[ros-users] rosjava xmlRpcPort issue

Thu Jun 9 12:55:21 UTC 2011

Interesting. Please do file an issue:

http://code.google.com/p/rosjava/issues/list

If you can enumerate some steps to reproduce the problem, that would
be great. Or, if you make a patch to fix it, post it on the issue.

Thanks,
Damon

On Thu, Jun 9, 2011 at 2:50 PM, Abhishek Verma
<toabhishekverma at gmail.com> wrote:
> 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
>>> >> >
>>> >> > _______________________________________________
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>>> >> > ros-users at code.ros.org
>>> >> > https://code.ros.org/mailman/listinfo/ros-users
>>> >> >
>>> >> >
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> ----------------------------------------------
>>> >> Damon Kohler
>>> >> Software Engineer
>>> >>
>>> >> Google Germany GmbH
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>>> >> 80331 München
>>> >> ----------------------------------------------
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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.
>>>
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>>
>
>
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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.