[Aglets-developer] Remote Messagin partiall works but not complete. Suggestions pls ..

[Anil K. <akr...@ya...>]

Hi Luca and ALL ,

The reason  why messaging was not working was , i had
a typo which cannot be easily find in the
handleMessage() function . I wrote the name of the
function wrongly as "handleMessgae()" .Thats why
messaging was not working.
Now local messaging and remote messaging is working.


But i have a new problem with remote messaging.

When i send a message from a  CreatorAgent  to the 
SlaveAgent ( which was created in the CreatorAgent 
context and dispached to another host)  , SlaveAgent 
is able to receive  the message. But how  can i send 
a reply message from the SlaveAgent to the parent now
..? 

I guess the sendReply()  function does not work for
this type of reply messages.

So I tried passing the "parentproxy" as follows while 
SlaveAgent being created.
 
AgletProxy parentProxy = 
this.getAgletContext().getAgletProxy(getAgletID());
AgletProxy localProxy  =  context.createAglet(null,
"fluca.SlaveAgent", parentProxy);


On the SlaveAgent side tw o function s "oncreation()"
and "handleMessgae()"
are coded as follows, to send a reply message to the
CreatorAgent.But it is not working.

public boolean handleMessage(Message msg)
      {
        
          if( msg.sameKind("HELLO"))
          {

             try
             {
                  //Send message to parent
                  parentProxy.sendMessage(new
Message("RECEIVED"));
                   
                  System.out.println(" Sent  Hello
received Message  to Parent. i.e to  RMCreatorAgent
");
                  
             }catch(Exception e)
             {
                  System.out.println("  RECEIVED reply
Message is not  sent .Exception is  :"+e);
                  e.printStackTrace();
              }
          }
          return true;
          
}

public void onCreation(Object init) {
      
      addMobilityListener(this);    
      System.out.println(" Called oncreation().");
      
      parentProxy = (AgletProxy)init;
      System.out.println(" parentProxy is
:"+parentProxy);
     
}


On the CreatorAgent side i added the  following 
handleMessage(Message msg) function  to receive the
messages sent fro mSlave Agent.

public boolean handleMessage(Message msg)
{
      System.out.println(" Just entered in the  
handleMessgae () of  CreatorAgent .");

      if( msg.sameKind("RECEIVED"))
      {
          System.out.println("I am  CreatorAgent.Reply
Message received from  SlaveAgent is :."); 
          System.out.println(""+msg);
      }

      return true;
}


Please let me know how to send a reply message from 
SlaveAgent to the Creator Agent so that the
communication is complete.

-- Luca Ferrari <cat...@us...>
wrote:

> Anil Kumar's cat, on 16/10/2005 6.51, walking on the
> keyboard wrote:
> > I got a compilation error at one import line   
> that
> > syas "import
> com.ibm.aglet.message.MessageException; "
> >  .
> > There is no  com.ibm.aglet.message  directory at
> all .
> > So i just removed this "message" directory and
> used 
> > " com.ibm.aglet.MessageException; "   and
> compilation
> > was successful .
> > 
> > (Note : you may need  to correct this error and
> upload
> > it again to CVS.)
> 
> 
> You're right, I had messed up the CVS, please be
> patiente, I'll fix the 
> compilation problems in the CVS repository.
> Coming back to your problem, I've tried the attached
> agents within my 
> system and they are working. Since they are similar
> to yours, I think 
> the problem is on your systems, but I'm not sure
> what the problem could 
> be (note: I used the 2.0.2 version downloaded from
> the web site). For 
> the remote messaging, I think there could be a
> problem with a firewall, 
> but I don't understand what the local messaging
> problem can be. Could 
> you try my agents on your machine please?
> Moreover, try to connect with a telnet client to the
> remote machine on 
> the 4434 port (or whatever port you are running the
> remote aglet 
> daemon). Finally, what happens if you involve remote
> messaging within 
> the same host, that means running two platforms on
> the same host?
> 
> Thanks,
> Luca
 



	
		
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