[jboss-dev-forums] [JBoss AS 7 Development] - Re: Need multiple connections for remote standalone client to clustered server

[Lars Kuettner]

Lars Kuettner [https://community.jboss.org/people/lkuettner] created the discussion

"Re: Need multiple connections for remote standalone client to clustered server"

To view the discussion, visit: https://community.jboss.org/message/753986#753986

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Hi Ondřej, I agree with your analysis. However, the description you gave in Jira seems quite complicated and unneccessarily so.

Perhaps I should add that I can reproduce the problem on a single host (localhost) with the following configuration in jboss-ejb-client.properties:

remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED=false
remote.connections=default,other
remote.connection.default.host=localhost
remote.connection.default.port=4447
remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false
remote.connection.other.host=localhost
remote.connection.other.port=4547
remote.connection.other.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false

Starting my two server nodes like this:
./standalone.sh -c=standalone-ha.xml -Djboss.node.name=Server1
./standalone.sh -c standalone-ha.xml -Djboss.node.name=Server2 -Djboss.socket.binding.port-offset=100

Everything works fine *most of the time* but *sometimes* *the client gets stuck not* on the initial lookup (as erroneously described above) *but on the first EJB method invocation*.
Even in my initial setup with the two servers bound to their own respective virtual network interface, *sometimes* the behaviour is alright but at other times the client just hangs and must be killed from the outside.

I've composed a small Swing app with which the behaviour can be easily examined:
 https://github.com/lkuettner/jbosscc-as7-examples/tree/master/cluster-client-example https://github.com/lkuettner/jbosscc-as7-examples/tree/master/cluster-client-example

Just build everything, start two AS 7 instances like described above (the second with a port offset of 100) and deploy cluster-example-server.jar on each of them. Now run the client and press the "invoke" button. If you see an SLSB node name, start the client over again - until it gets stuck eventually.

Maybe some JBoss developer can have a look into this - Jaikiran?
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