[Spread-users] Questions about CAUSED_BY_NETWORK

[andreas.ames at de.transport.bombardier.com]

Hi all,

I'm a Spread newbie.  I've looked around in the net, the docs and the 
examples but I still don't crasp the CAUSED_BY_NETWORK membership 
messages, neither conceptually nor API-wise.  I've got the following 
questions about it:

1. I understand a CAUSED_BY_NETWORK can mean both that members have been 
added to and/or removed from a group, right? Can the same membership 
message mix sets of private group names for both kinds of events or 
indicates each message either/or?

2. I don't understand how to programmatically determine which private 
groups are indicated to join or to leave when I receive a 
CAUSED_BY_NETWORK membership message. I see what spuser does with it, but 
still I don't fully get it.  Could you give me some hints?

3. I got a single Spread segment on a single LAN with a daemon on each 
individual device (less than 10).  I understand that CAUSED_BY_NETWORK can 
also happen in this configuration (daemon crash, device crash, cable 
breakage, what else?), right?

I'd appreciate explanations, links to other sample code, documents 
concerning this.


Thanks in advance,

aa

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