RE: Building PipeAdvertising

Close but not quite.  The important piece of information is the PipeID,
and every client needs to generate the same PipeID if they are going to
use this pipe to communicate with each other.  The variant of
IDFactory.newPipeID you chose will generate a randon ID within the scope
of the peer group, you want to generate a specific ID within the peer
group.

To do this, you need to specify a seed for the ID generator.  There is a
method on IDFactory that will allow you to specify a seed:
[newPipeID(PeerGroupID, byte[])].  If you use this method and all
clients specify the same seed, then they will all generate the same pipe
ID and can talk to each other using the resulting pipe advertisement.

For ideas on generating a seed value, see the Wiki entry on "Well Known
ID's"

http://wiki.java.net/bin/view/Jxta/WellKnownIDs

Cheers
Chris 

-----Original Message-----
From: Java [mailto:[email protected]] 
Sent: Tuesday, May 30, 2006 5:11 AM
To: [email protected]
Subject: [JXTA user] Building PipeAdvertising

hello,

i have this question: if I build a pipe advertisement using this code:

pipeAdv = (PipeAdvertisement)AdvertisementFactory.newAdvertisement(
                   PipeAdvertisement.getAdvertisementType());
pipeAdv.setPipeID(IDFactory.newPipeID(peerGroupName.getPeerGroupID()));
pipeAdv.setName(channelName);
pipeAdv.setType(PipeService.UnicastType);

so, taking  informations from the peer group, do I obtain the same
pipeAdvertisement in every peer that runs this code?

Or in another way: is there any way to "build" the pipeAdvertisment for
a group? So every peer can build its copy of the pipe for communicating
with other peers.


regards
Segolas

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