Access Remote Jboss Topic from client

[danielgoodwin]

I am trying to use a client to access a topic on a remote machine running JBoss. The JBoss 3.2.4 system (linux) is not running on default ports but is using ports-01 configuration (something else is running on some of the default ports) so jndi is running on 1199 ..

The client is using the jbossall-client.jar

I get and exception of form Naming Exception javax.naming.CommunicationException [Root exception is java.rmi.NoSuchObjectException: no such object in table]

I have placed fuller exception trace below.

It all works fine if I have them on same machine (Win2000).
I have also tried a change I noticed elsewhere where I changed
{jboss.bind.address} in uil2-service.xml to actual IP address without
success (though I think this may be OK anyway in 3.2.4)

App on Jboss (MDB) using same jndi work fine though obviously this is
on the same machine - it post stats to the topic to be retrieved by a number of remote clients.

I can telnet to the port and get some gibberish so It would appear to listening.


Systems

Client on Win2000 with JDK 1.4
Jboss 3.2.4 on Linux also running JDK 1.4

InitialContext iniCtx = null;
if (true){
 Properties properties = new Properties();
 properties.put Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
properties.put(Context.URL_PKG_PREFIXES, "org.jnp.interfaces");
properties.put(Context.PROVIDER_URL, "10.2.0.77:1199");
iniCtx = new InitialContext(properties);
System.out.println("Props :" + properties);
}
else
{
// If using jndi.properties, then use below
iniCtx = new InitialContext();
}

topic = (Topic) iniCtx.lookup(topicName);
System.out.println("Topic found " + topicName);

Object tmp = iniCtx.lookup("UIL2ConnectionFactory");
TopicConnectionFactory tcf = (TopicConnectionFactory) tmp;

 [java] Props :{java.naming.provider.url=10.2.0.77:1199, java.naming.factory
.initial=org.jnp.interfaces.NamingContextFactory, java.naming.factory.url.pkgs=o
rg.jnp.interfaces}
 [java] NamingException javax.naming.CommunicationException [Root exception
is java.rmi.NoSuchObjectException: no such object in table]
 [java] javax.naming.CommunicationException [Root exception is java.rmi.NoSu
chObjectException: no such object in table]
 [java] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:64
7)
 [java] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:50
7)
 [java] at javax.naming.InitialContext.lookup(InitialContext.java:347)
 [java] at relayui.RelayIFListener$RelayListenerThread.setupPubSub(Relay
IFListener.java:350)
 [java] at relayui.RelayIFListener$RelayListenerThread.<init>(RelayIFLis
tener.java:239)
 [java] at relayui.RelayIFListener.run(RelayIFListener.java:94)
 [java] at java.lang.Thread.run(Thread.java:534)
 [java] Caused by: java.rmi.NoSuchObjectException: no such object in table
 [java] at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServe
r(StreamRemoteCall.java:247)
 [java] at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCa
ll.java:223)
 [java] at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)
 [java] at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
 [java] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:52
8)
 [java] ... 6 more

[danielgoodwin]

With some more investigation I am now getting
a java.net.Exception relating to connection refused for 127.0.0.1
(Previous errors were occuring when there was an active JBOSS on client machine as well)

I looked in WIKI and saw where /etc/hosts should not have it set to host name. Does this mean that if Jboss host where queue is is linux-server then there should not be a line in /etc/hosts such as
127.0.0.1 localhost linux-server

If so,
(a) why? the system administrator insists it is required for other(?) things
(b) can I get around it by doing something else.
As I said before I have tried putting actual IP address in UIL service file instead of ${jboss.bind.address} without success

Thanks

Daniel

[danielgoodwin]

Also
I know its a linux question, but if I change etc/hosts,
do I have to reboot for it to have an effect.
I managed to change it and reboot JBoss server, but now I get Connection refused without an IP address (it is blank)

Daniel

[danielgoodwin]

Finally managed to get this fixed and yes it was the etc/hosts file
So
127.0.0.1 localhost servername.domain
should be replaced with
127.0.0.1 localhost
10.2.0.77 servername.domain

(assuming that there is no DNS to resolve the IP address)

Daniel

[amanchanda]

Hi Daniel

I am facing a similar issues. I am trying to lookup to a ejb remotely and i am getting javax.naming.CommunicationException [Root exception is java.rmi.NoSuchObjectException: no such object in table]


Can you guide me how you were able to solve the problem....

Thanks

Ashish