Re: Peer-Discovery in own Group

Hi Mohamed,

thank you for your suggestion. Now I can improve my code :-).

Thank you!

Yun

> I also suggest you use the rendezvous event notification callbacks and 
> wait rather than sleep,  as it provides for a cleaner application 
> interaction. Here's what I mean ;
>
> private String rendezvousLock = "Rendezvous Lock";
>
> ..
> ..
>
> rendezvous.addListener(this);
>
> if ( !rendezvous.isRendezVous()  && 
> !rendezvous.isConnectedToRendezVous()) {
>            System.out.println("Waiting for Rendezvous Connection");
>            try {
>                synchronized(rendezvousLock) {
>                    rendezvousLock.wait(autoRendezvousTimeout);
>                }
>            } catch (InterruptedException e) {
>            }
>        }
> ....
> ....
>
>    public void rendezvousEvent(RendezvousEvent event) {
>        if (event.getType() == event.RDVCONNECT ||
>            event.getType() == event.RDVRECONNECT) {
>            synchronized(rendezvousLock) {
>                rendezvousLock.notify();
>            }
>        }
>     }
>
>
>
> Yun Ding wrote:
>
>> Hi,
>>
>>> thank you very much for that explanation. Now I tried this:
>>>
>>> dhtPeerGoup.getRendezVousService().setAutoStart(true);
>>> rdv = dhtPeerGoup.getRendezVousService();
>>>  
>>> while (!rdv.isConnectedToRendezVous()) {
>>>    try {
>>> Thread.sleep(2000);
>>>    } catch (InterruptedException e1) {
>>> }
>>>
>>> But I never get out of the loop. When there is just one instance of 
>>> my Application. So there ist just one member in this group - me. So 
>>> I should become rendezvous-peer of this group, don't I?
>>>  
>>>
>> yes, you are right.  Your peer will become the rendezvous peer, and 
>> it is not
>> connected to itself (sounds strange).  You should use the following 
>> code.
>> Your peer will get out of the loop, since it itself becomes a 
>> rendezvous peer.
>>
>>        while (( ! rdv.isConnectedToRendezVous () ) &&
>>           ( ! rdv.isRendezVous ()   ) )  {
>>              try {
>>                   Thread.sleep ( 2000  );
>>              }
>>          catch ( Exception e ) {}
>>        }
>>
>> Best wishes,
>>
>> Yun
>>
>>
>
>


-- 
Dr. Yun Ding
European Media Laboratory GmbH
Schloss-Wolfsbrunnenweg 33
D-69118 Heidelberg
Tel.: (+49) 6221 533 240
Fax.: (+49) 6221 533 298