[jboss-dev] JGroup Oddness.. GMS?

[Ales Justin]

Try the forums, user forums in particular.
* http://community.jboss.org/

mike cann wrote:
> Hi List,
> 
> Only just joined, im not sure if this is the right place to post or not 
> so let me know if it isnt.
> 
> Im trying to use JGroups in a project.
> 
> First things first tried running a very simple example but couldnt get 
> the two machines to talk to each other, i read all the documentation but 
> still couldnt work out why.
> 
> I tried using the webstart demo of the draw (found here 
> http://www.jgroups.org/demos.html) thats actually the replicatedcache 
> demo and to my surprise it worked.
> 
> I downloaded the .jar that the jnlp uses and ran it from the command 
> line and got:
> 
> 
> ---------------------------------------------------------
> GMS: address is 192.168.1.69:54939 <http://192.168.1.69:54939> 
> (cluster=replcache-cluster)
> ---------------------------------------------------------
> 
> 
> 
> Now when I tried to run the ReplCacheDemo from within the 
> jgroups-all.jar I get the following:
> 
> 
> 
> java -cp jgroups-all.jar org.jgroups.demos.ReplCacheDemo
> 
> 14-Dec-2009 20:17:24 org.jgroups.logging.JDKLogImpl info
> INFO: JGroups version: 2.8.0.CR7
> 
> -------------------------------------------------------------------
> GMS: address=M-Win7-38823, cluster=replcache-cluster, physical 
> address=fe80:0:0:
> 0:69e5:8edf:3e90:e817:62330
> -------------------------------------------------------------------
> 
> 
> So im not sure whats going on here, it looks like the jnlp demo is using 
> a different GMS (?) settings to the one in jgroups-all.jar, so I tried 
> to take the udp.xml file from the jnlp jar and use it in a simple 
> example and I get the follwing errors:
> 
> 
> 
> 14-Dec-2009 21:12:12 org.jgroups.logging.JDKLogImpl info
> INFO: JGroups version: 2.8.0.CR7
> Exception in thread "main" org.jgroups.ChannelException: unable to setup 
> the protocol stack
>         at org.jgroups.JChannel.init(JChannel.java:1706)
>         at org.jgroups.JChannel.<init>(JChannel.java:243)
>         at org.jgroups.JChannel.<init>(JChannel.java:226)
>         at jgroupssimple.Main.main(Main.java:25)
> Caused by: java.lang.Exception: unable to load class for protocol  
> (either as an absolute -  - or relative - org.jgroups.protocols. - 
> package name)!
>         at 
> org.jgroups.stack.Configurator$ProtocolConfiguration.createLayer(Configurator.java:1244)
>         at 
> org.jgroups.stack.Configurator$ProtocolConfiguration.access$000(Configurator.java:1135)
>         at 
> org.jgroups.stack.Configurator.createProtocols(Configurator.java:368)
>         at 
> org.jgroups.stack.Configurator.setupProtocolStack(Configurator.java:88)
>         at 
> org.jgroups.stack.Configurator.setupProtocolStack(Configurator.java:54)
>         at org.jgroups.stack.ProtocolStack.setup(ProtocolStack.java:452)
>         at org.jgroups.JChannel.init(JChannel.java:1702)
>         ... 3 more
> Java Result: 1
> BUILD SUCCESSFUL (total time: 0 seconds)
> 
> 
> 
> Anyone any clues as to whats going on here?
> Cheers for your time :)
> Mike
> 
> 
> 
> 
> 
> -- 
> Mike Cann
> http://www.mikecann.co.uk/
> http://www.artificialgames.co.uk/
> 
> 
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> 
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