3 Replies Latest reply on Sep 20, 2006 2:12 AM by ovidiu.feodorov

    Cannot find free port - problem

    anshah1
    anshah1 Sep 15, 2006 2:44 PM

      Hi all,

      I've never seen this kind of an error message before. I have a jboss (app server AS4.0.3SP1) messaging configuration (CR4) running on a Windows box and it runs perfectly as expected.

      Now recently we shifted our server to a RHEL machine and downloaded and installed the same jboss server and messaging configuration. When running the jboss server under root privileges it runs perfectly fine... However the moment you switch to running as another user account, lets say jboss, it starts giving the following error messages..

      java.io.IOException: Can not find a free port for use.
 at org.jboss.remoting.transport.PortUtil.findFreePort(PortUtil.java:114)
 at org.jboss.jms.client.remoting.CallbackServerFactory.startCallbackServer(CallbackServerFactory.java:141)
 at org.jboss.jms.client.remoting.CallbackServerFactory.getCallbackServer(CallbackServerFactory.java:87)
 at org.jboss.jms.client.remoting.JMSRemotingConnection.<init>(JMSRemotingConnection.java:84)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.invoke(ClientConnectionFactoryDelegate.java:158)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.java)
 at org.jboss.jms.client.container.StateCreationAspect.handleCreateConnectionDelegate(StateCreationAspect.java:81)
 at org.jboss.aop.advice.org.jboss.jms.client.container.StateCreationAspect1.invoke(StateCreationAspect1.java)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.java)
 at org.jboss.jms.client.container.ExceptionInterceptor.invoke(ExceptionInterceptor.java:69)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.java)
 at org.jboss.jms.client.container.ClientLogInterceptor.invoke(ClientLogInterceptor.java:107)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.invokeNext(ClientConnectionFactoryDelegate$createConnectionDelegate_N6840474864420126404.java)
 at org.jboss.jms.client.delegate.ClientConnectionFactoryDelegate.createConnectionDelegate(ClientConnectionFactoryDelegate.java)
 at org.jboss.jms.client.JBossConnectionFactory.createConnectionInternal(JBossConnectionFactory.java:202)
 at org.jboss.jms.client.JBossConnectionFactory.createQueueConnection(JBossConnectionFactory.java:108)
 at org.jboss.jms.client.JBossConnectionFactory.createQueueConnection(JBossConnectionFactory.java:103)
 at org.jboss.ejb.plugins.jms.DLQHandler.createService(DLQHandler.java:156)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:245)
 at org.jboss.system.ServiceMBeanSupport.create(ServiceMBeanSupport.java:173)
 at org.jboss.ejb.plugins.jms.JMSContainerInvoker.innerStartDelivery(JMSContainerInvoker.java:605)
 at org.jboss.ejb.plugins.jms.JMSContainerInvoker.startService(JMSContainerInvoker.java:932)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:274)
 at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:230)
 at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)
 at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
 at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
 at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:245)
 at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
 at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:943)
 at $Proxy0.start(Unknown Source)
 at org.jboss.system.ServiceController.start(ServiceController.java:428)
 at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)



      It seems to run fine as root so I would have to guess that it is trying to open ports under 1024 which are the only ports restricted to root. But looking at the jboss code it doesn't seem to be the case.

      Any ideas on what might be causing this?

      Thanks,
      Anuj





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