[jboss-dev] JGroup Oddness.. GMS?

[mike cann]

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 (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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