2 Replies Latest reply on Aug 25, 2004 1:19 PM by Dave Smith

    Remote JNDI/EJB Problems

    cfrostrun Newbie

      How's everyone doing today.. Good. :)

      well my problem is driving me crazy, so I hope someone can help me
      figure out why this is doing what it's doing.. i'm probably just doing
      something "stupid"

      I'm trying to call a remote stateless session bean from a different
      physical box.

      what i have working: i have a ear file w/ the war + ejb.jar all
      enclosed and that is working beautifully. now i'm trying to
      distribute out the processes. have a "client" either tomcat or a java
      application sitting on one box, and the ejb container w/ my session
      facades on the other box.

      my environment: jboss 3.2.2-tomcat 4.1.24 bundle, linux redhat.

      I've been monkeying around with the configuration and have gotten two
      different errors.

      the reason why i'm trying to list bindings is because of the second error that i'm getting. i was hoping that it would tell me what the objects are beings stored for a remote call.

      1st error: java application (see source below) on box one trying to
      connect to box 2 jndi but saying connection refused to 127.0.0.1. I
      have also even removed (commented out) the localhost references to
      /etc/hosts.

      this is trying to do a simple listBindings.

      java source:

      import javax.naming.*;
      import java.util.*;
      import javax.rmi.PortableRemoteObject;

      public class TestClient3 {

      public static void main(String[] args){
      try{

      String sInitialContextFactory =
      "org.jnp.interfaces.NamingContextFactory";
      String sProviderUrl = "jnp://192.168.0.100:1099";
      String sFactoryUrl = "java.naming.factory.url.pkgs";
      // also tried sInterface org.jboss.naming:org.jnp.interface
      String sInterface = "org.jboss.naming.client:org.jnp.interfaces";

      Hashtable env = new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY, sInitialContextFactory);
      env.put(Context.PROVIDER_URL, sProviderUrl);
      env.put(sFactoryUrl, sInterface);


      InitialContext initialContext = new InitialContext(env);
      System.out.println(initialContext.getEnvironment().toString());
      NamingEnumeration enum = initialContext.listBindings("");
      System.out.println(enum.toString());

      while (enum.hasMoreElements()) {
      System.out.println(enum.next().toString());
      }
      }catch(Exception e){ e.printStackTrace(System.err);
      }
      }
      }

      // my box ip i'm running this from is 192.168.0.194 and here's the
      output results:

      {java.naming.provider.url=192.168.0.100:1099,
      java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory,
      java.naming.factory.url.pkgs=org.jboss.naming.client:org.jnp.interfaces}
      javax.naming.CommunicationException [Root exception is
      java.rmi.ConnectException: Connection refused to host: 127.0.0.1;
      nested exception is:
      java.net.ConnectException: Connection refused]
      at org.jnp.interfaces.NamingContext.listBindings(NamingContext.java:796)
      at org.jnp.interfaces.NamingContext.listBindings(NamingContext.java:735)
      at javax.naming.InitialContext.listBindings(InitialContext.java:396)
      at xxx.xxx.xxx.xxx.client.TestClient3.main(TestClient3.java:48)
      Caused by: java.rmi.ConnectException: Connection refused to host:
      127.0.0.1; nested exception is:
      java.net.ConnectException: Connection refused
      at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:567)
      at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
      at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
      at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:101)
      at org.jnp.server.NamingServer_Stub.listBindings(Unknown Source)
      at org.jnp.interfaces.NamingContext.listBindings(NamingContext.java:747)
      ... 3 more


      Any Ideas?


      Problem two. I got the jndi connecting properly but when i try to do a
      lookup w/ the same string name i'm using through jndi on the bundled
      process it's coming up w/

      javax.naming.CommunicationException [Root exception is
      java.rmi.NoSuchObjectException: no such object in table]
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:647)
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:507)
      at javax.naming.InitialContext.lookup(InitialContext.java:347)
      at xxx.xxx.xxx.client.TestClient2.main(TestClient2.java:48)
      Caused by: java.rmi.NoSuchObjectException: no such object in table
      at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
      at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:223)
      at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)
      at org.jnp.server.NamingServer_Stub.lookup(Unknown Source)
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:528)
      ... 3 more


      source:
      public static void main(String args[]){

      try{

      String sInitialContextFactory =
      "org.jnp.interfaces.NamingContextFactory";
      String sProviderUrl = "jnp://zodiac:1099";
      // zodiac is 192.168.0.100
      String sFactoryUrl = "java.naming.factory.url.pkgs";
      String sInterface = "org.jboss.naming:org.jnp.interfaces";


      Hashtable env = new Hashtable();

      env.put(Context.INITIAL_CONTEXT_FACTORY, sInitialContextFactory);
      env.put(Context.PROVIDER_URL, sProviderUrl);
      env.put(sFactoryUrl, sInterface);


      InitialContext ctx = new InitialContext(env);

      Object jndi = ctx.lookup("zodiac_facade/BusinessService");
      Object portable = PortableRemoteObject.narrow(jndi,
      getEJBClassRef(nServiceId));

      }catch(Exception e){ e.printStackTrace(System.err);
      }
      }



      and the jndi lookup string works inside the web container on the same
      box... I even got it working through the client application on the
      same box.... apparently the problem is just when it's on a remote box.
      there is no firewall i've turned off /etc/init.d/iptables.sh stop

      i'm baffled,

      someone please give me some pointers.

      Chris