5 Replies Latest reply on Mar 31, 2008 11:03 AM by resh123

urgent .. help needed in javax.naming.CommunicationException

deepali.bhosale Feb 13, 2007 1:25 AM

Hi All,
I have created one small EJB application to learn EJB with JBoss. I have deployed the BookBean.jar file in the JBOS.
the foloowing message i get while starting the JBoss server.
11:47:30,312 INFO [EjbModule] Deploying BookBean
11:47:30,609 INFO [EJBDeployer] Deployed: file:/C:/JBOSS/jboss-4.0.2/jboss-4.0.2/server/default/deploy/book.jar

Which mean my ejb is deployed successfully.

now i have a BookClient.java file whcih when i run using command java BookClient it gives me following error
javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed
out]
at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1302)
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1382)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(Unknown Source)
at BookClient.main(BookClient.java:20)
Caused by: java.net.SocketTimeoutException: Receive timed out
at java.net.PlainDatagramSocketImpl.receive0(Native Method)
at java.net.PlainDatagramSocketImpl.receive(Unknown Source)
at java.net.DatagramSocket.receive(Unknown Source)
at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1272)
... 5 more

and when i try

java -classpath %LIBDIR%\jnp-client.jar;%LIBDIR%\jboss-common-client.jar;%LIBDIR%\jboss-j2ee.jar;%LIBDIR%\jboss-net-client.jar;%LIBDIR%\jbossall-client.jar;;%LIBDIR%\jnet.jar;C:\Books; BookClient

then i get the following error.
javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed
out]
at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1302)
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1382)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(Unknown Source)
at BookClient.main(BookClient.java:20)
Caused by: java.net.SocketTimeoutException: Receive timed out
at java.net.PlainDatagramSocketImpl.receive0(Native Method)
at java.net.PlainDatagramSocketImpl.receive(Unknown Source)
at java.net.DatagramSocket.receive(Unknown Source)
at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1272)
... 5 more
I have created the jndi.properties file and put that in C:\Books. the same path is in my classpath as well as in path varaible of the system. Whats the problem. Plz help

1. Re: urgent .. help needed in javax.naming.CommunicationExcep

ravishbhupesh Feb 13, 2007 1:44 AM (in response to deepali.bhosale)

which ejb bean r u using. I mean for entity bean u need to package in a par archive and for session bean u need to package in a ejb3 archive in case of Jboss.
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2. Re: urgent .. help needed in javax.naming.CommunicationExcep

deepali.bhosale Feb 13, 2007 2:31 AM (in response to deepali.bhosale)

Hi Thanks for the prompt reply. I am using stateful session bean. I did't understand how to package in a ejb3 archive. Please explain this as i don;t know how to do this.
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3. Re: urgent .. help needed in javax.naming.CommunicationExcep

deepali.bhosale Feb 13, 2007 2:32 AM (in response to deepali.bhosale)

"ravishbhupesh" wrote:
which ejb bean r u using. I mean for entity bean u need to package in a par archive and for session bean u need to package in a ejb3 archive in case of Jboss.

Hi Thanks for the prompt reply. I am using stateful session bean. I did't understand how to package in a ejb3 archive. Please explain this as i don;t know how to do this.
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4. Re: urgent .. help needed in javax.naming.CommunicationExcep

ravishbhupesh Feb 13, 2007 3:14 AM (in response to deepali.bhosale)

I made a stateless session bean using JBoss Eclipse IDE.

Struture of my ejb3 archive was

stateless.ejb3 -> stateless(package) -> Calculator.java(interface)
-> CalculatorImpl.java(class)
-> jndi.properties (default generated)

dats all. deployed on JBoss4.0.3SP1 n den I made a client to call it. It was successfull.
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5. Re: urgent .. help needed in javax.naming.CommunicationExcep

resh123 Mar 31, 2008 11:03 AM (in response to deepali.bhosale)

Hi..i am also facing a similar issue. I created a simple EJB and deployed it as a jar file. I created a standalone client class. I included all the jar files mentioned in the client project. However when i invoke the EJB from the client i get the exception Exception javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out.
I am usign JBoss 4.2.2 GA. Can anyone help?
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