Re: [ecf-dev] Re: JGroups ECF server

[Scott Lewis <slewis@xxxxxxxxxxxxxxxxx>]

Hi Pierre,

Pierre Henry Perret wrote:
> ok Scott,
>
> but why if the JGroups knows about that ?
>
> It's possible to config Jgroups as to be itself sort of... ECF JGroups 
> server , wouldn't it ?

I"m not sure if I'm understanding you correctly, but the way the JGroups 
provider works is that when an ECF 'manager' is created (note it's not a 
'server' in the traditional sense, so it's refered to as the pub/sub 
group 'manager'), it starts-up and listens to a multicast ip addres/port 
combination.  Then, ECF client containers can connect to that group 
*iff* the connectivity (via multicast) is present...that is, if I start 
a group manager on ecf.eclipse.org, and then try to connect to it from 
here at my desk, the connection/communication will only work if the 
multicast messages sent from my process to the ECF group manager can 
make it...i.e. through all routers from my lan to ecf.eclipse.org.  And 
this is not (at all) guaranteed on the wider internet (unfortunately, 
but that's a long story).

Scott


> 2009/4/29 Scott Lewis <slewis@xxxxxxxxxxxxxxxxx 
> <mailto:slewis@xxxxxxxxxxxxxxxxx>>
>
>     Hi Pierre,
>
>     One thing to be aware of with the JGroups provider...if multicast
>     IP is used it's unlikely that such containers will be visible over
>     the Internet...and depending upon the network they may not even be
>     visible on the lan.  It just depends upon the extent of support
>     for multicast.
>
>     Scott
>
>
>     Pierre Henry Perret wrote:
>
>         yes Remy, but I would like to test JGroups in a public container.
>
>         By the way, I dont mange connecting with Eclipse IM  u sing my
>         BUg account, but I've verified this one connecting on my
>         gugZilla account without problem !
>
>
>         --
>         Pierre
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