6:44 a.m.
Hi,
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.
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