Getting EJB from remote Jboss instance fails
henk53 Jul 11, 2009 7:44 AMHi,
I'm trying to get an EJB from a remote Jboss AS 5.0.1 instance. On that same machine (in a different JVM) I can get this bean without any problems using basic code such as this:
public static void main(String[] args) throws Exception { Context context = getRemoteInitialContext(); Object obj = context.lookup("EJBTest/SessionBean/remote"); } public static Context getRemoteInitialContext() throws NamingException { Properties p = new Properties(); p.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); p.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces"); p.put(Context.PROVIDER_URL, "jnp://localhost:1099"); return new InitialContext(p); }
This is all straight from the many examples and tutorials and works like a charm.
However, when I try to connect from the machine next to me, using the same code (but changing localhost into the IP number), it doesn't work. I started Jboss AS with -b 0.0.0.0:
/opt/jdk1.6.0_12//bin/java -Djboss.server.log.threshold=WARN -Dprogram.name=run.sh -server -Xms128m -Xmx512m -XX:MaxPermSize=256m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Djava.net.preferIPv4Stack=true -Djava.endorsed.dirs=/opt/jboss/lib/endorsed -classpath /opt/jboss/bin/run.jar:/opt/jdk1.6.0_12//lib/tools.jar org.jboss.Main -b 0.0.0.0
I also confirmed that port 1099 is reachable from the other machine via telnet and nmap. E.g.:
telnet 10.0.0.2 1099 Trying ::1... Connected to 10.0.0.2. Escape character is '^]'. ??srjava.rmi.MarshalledObject|???c?>IhashlocBytest
nmap -sT -p 1099 10.0.0.2 Starting Nmap 4.63a ( http://nmap.org ) at 2009-07-11 10:34 CEST Interesting ports on 10.0.0.2: PORT STATE SERVICE 1099/tcp open unknown
So the host is reachable and the port is open. However, when I now execute the following from host 10.0.0.1:
public static void main(String[] args) throws Exception { Context context = getRemoteInitialContext(); Object obj = context.lookup("EJBTest/SessionBean/remote"); } public static Context getRemoteInitialContext() throws NamingException { Properties p = new Properties(); p.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); p.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces"); p.put(Context.PROVIDER_URL, "jnp://10.0.0.2:1099"); return new InitialContext(p); }
I get the following exception:
log4j:WARN No appenders could be found for logger (org.jnp.interfaces.TimedSocketFactory). log4j:WARN Please initialize the log4j system properly. Exception in thread "main" javax.naming.CommunicationException: Could not obtain connection to any of these urls: 10.0.0.2:1099 and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out] [Root exception is javax.naming.CommunicationException: Failed to connect to server 10.0.0.2:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server 10.0.0.2:1099 [Root exception is java.net.ConnectException: Operation timed out]]] at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1727) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:680) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:673) at javax.naming.InitialContext.lookup(InitialContext.java:392) at client.TestRemoteClientAccess.main(TestRemoteClientAccess.java:23) Caused by: javax.naming.CommunicationException: Failed to connect to server 10.0.0.2:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server 10.0.0.2:1099 [Root exception is java.net.ConnectException: Operation timed out]] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:311) at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1698) ... 4 more Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server 10.0.0.2:1099 [Root exception is java.net.ConnectException: Operation timed out] at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:281) ... 5 more Caused by: java.net.ConnectException: Operation timed out at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:519) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:97) at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:82) at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:277) ... 5 more
After googling around a little, I played with the jnp.localAddress property, but this didn't really helped. Setting it to some bogus address correctly gives a binding error, but when I enter my real local IP I pretty much get the same exception as above.
I wonder if anyone could help me with this or point me to documentation describing how to do this.
Many thanks in advance.