Re: Individual Members of PeerGroup

Hi Paul,
I would suggest to maintain special recovery input pipe with well known id 
on each peer, so you'll know how to address them by unicast output pipe.
In my application the network is by its nature unstable too, so I'm using 
well known ids for basic services and your recovery service looks very 
appropriate for this approach.
 Vitaly.

 On 9/9/05, Poole, Paul P1 <[email protected]> wrote: 
> 
> Mohamed,
> 
> Thanks for taking the time to respond... Here is what I am trying to
> accomplish:
> 
> I have designed a system where each message generated by a peer for a
> group is numbered. This numbering is used by the other peers to
> determine if they have received all of the messages from a given peer.
> If a message received is larger than expected, then it is threaded into
> recovery mode (after a short sleep cycle since some messages are
> received out of order). In recovery mode, I want a peer to be able to
> request from other peers the messages that were missed. However, I do
> not want the query to be propagated to the entire group, just a couple
> of them (at most 3). I am trying to develop this for a very unstable
> network - peers are coming and going at a high rate. Thus, I want to be
> able to obtain the "latest" list from the rendezvous and send my
> recovery requests to a few members of the group that are currently
> connected (preferentially connected with least latency, but that will be
> tackled later). I thought that perhaps grabbing the current list from
> rdv and sending a recovery message to a few of them would work, but I am
> unable to get the propagate method to work (I have created a separate
> thread for that problem).
> 
> I would love to hear alternative suggestions.
> 
> My current problem with performing a unicast loop is that I do not
> understand how to obtain a pipe for each peer that I chose from the list
> of connected peers. If I can get a unicast pipe from each of those
> peers, then I could set this up to simply unicast the recovery message.
> 
> Thanks for your help!!!
> 
> -----Original Message-----
> From: Mohamed Abdelaziz [mailto:[email protected]]
> Sent: Thursday, September 08, 2005 8:12 PM
> To: [email protected]
> Subject: Re: [JXTA user] Individual Members of PeerGroup
> 
> 
> Mohamed Abdelaziz wrote:
> 
> > Paul,
> >
> > Creating an OutputPipe object with the desired set of peers should
> > provide the functionality you seek. Using rendezvous propagation may
> > work given the correct service name and param, however, we advise
> > against it, mainly due to the potential flood everywhere, and as a
> > result it has become more restrictive in the upcoming release 2.3.5.
> >
> > Is this a static set of peers, or you looking for suggestions on how
> > to dynamically create one?
> >
> > if it is the latter, perhaps a ping message over the propagate pipe
> > results into a unicast response over the same propagate pipe.
> 
> 
> Another suggestion is to keep track of peers over the course of
> communication and dynamically augment the random set of peers.
> 
> >
> > Mohamed
> >
> 
> 
> --
> http://blogs.sun.com/roller/page/hamada
> http://weblogs.java.net/blog/hamada
> 
> 
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