How does the client know the Network connection is droped ?

cold_lin May 24, 2004 5:23 AM

I just done some tests on EJB network connection issue:
1) client call a method of a session bean on server, before this method finish, the network of server is dropped.
Then the client program seems keep on waitting forever. There are some error inormation generated on server side.

2)client call a method of a session bean on server, before this method finish, the network of client is dropped.
Then the client program seems keep on waitting forever. There is no error inormation found on server side.

Can someone explain this and tell me how to let the client/server know there is a network connection problem?

Many Thanks,

1. Re: How does the client know the Network connection is drope

adrian.brock May 24, 2004 9:50 AM (in response to cold_lin)
It depends upon the protocol used.

e.g. if you are using the default RMI method, you should check the options available
in the jdk documentation.
You should also check your OS settings.

Alternatively, where relevant, JBoss allows you to override the socket creation
so you can configure whatever you like using client/server socket factories.

e.g. for RMI in conf/jboss-service.xml
 <mbean code="org.jboss.invocation.jrmp.server.JRMPInvoker" name="jboss:service=invoker,type=jrmp"> <attribute name="RMIObjectPort">4444</attribute> <attribute name="ServerAddress">${jboss.bind.address}</attribute>  <depends>jboss:service=TransactionManager</depends> </mbean>

uncomment and replace custom with your implementation, e.g. one
that sets a read timeout on the socket.

You might also try java 1.4 which is a lot better than previous versions
at detecting network problems.
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