问题：超级结点是否有必要也创建或加入对等组C
以保证边缘结点在对等组C中的通信

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PeerInfoService

List<PeerID> getLocalEdgeView()

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https://www.java.net/node/662222

> So it seems like I manage to connect to the jxta-38
> Render-Vous peer, thanks for that.
Correct.
>
> However, I have a question left: a peer can become a
> rendez-vous for a peer group, does it mean that I may
> loose some capacity to reach rendez-vous peers after
> the switch from Edge to Rendez-vous (or even to
> Relay)?
No. RDVs are scoped per peergroup. This means that
if you create a sub-peergroup this group can have
a new set of rendezvous that are indepent of the
NetPeergroup (root peergroup) RDVs. While your
peer connect to the sub-group RDVs, it will remain
connected to the NetPeerGroup RDVs. You can
explore this within the JXTA shell using the
chpgrp command to switch the peergroup context and
check the output of the "rdvstatus" command.

>In other words, if I want to develop an
> application relying on JXTA, should I automatically
> set the configuration of my users to Edge?
For the NetPeergroup you want to be an
edge, for the remaining sub-peergoups you should
let your peer (if you have good connectivity) dynamically
act as a RDV via the auto-RDV election
option.

Hth,

B.
>Will they
> automatically be able to reach any other users for
> their peer groups from behind any firewall and
> proxys? If not what is the solution?
>
> I apologize if this is a basic question, but I could
> not find a definitive answer from the JXTA v2.3.x:
> Java Programmer’s Guide.
>
> Thanks !!!