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From "Vamsavardhana Reddy (JIRA)" <j...@apache.org>
Subject [jira] Closed: (GERONIMO-728) Jetty gives misleading NPE on "port in use" condition
Date Thu, 02 Nov 2006 10:55:29 GMT
     [ http://issues.apache.org/jira/browse/GERONIMO-728?page=all ]

Vamsavardhana Reddy closed GERONIMO-728.
----------------------------------------


> Jetty gives misleading NPE on "port in use" condition
> -----------------------------------------------------
>
>                 Key: GERONIMO-728
>                 URL: http://issues.apache.org/jira/browse/GERONIMO-728
>             Project: Geronimo
>          Issue Type: Improvement
>          Components: web, dependencies
>    Affects Versions: 1.0-M3, 1.0-M5, 1.0-M4
>            Reporter: Aaron Mulder
>         Assigned To: Kevan Miller
>             Fix For: 1.0-M5
>
>
> When Jetty starts up but the port it wants is in use, you get an error like this:
> 19 ERROR [GBeanInstance] Problem in doFail of geronimo.server:J2EEApplication=null,J2EEModule=org/apache/geronimo/Server,J2EEServer=geronimo,j2eeType=GBean,name=JettyWebConnector
> java.lang.NullPointerException
>         at org.mortbay.util.ThreadedServer.stop(ThreadedServer.java:544)
>         at org.mortbay.http.SocketListener.stop(SocketListener.java:211)
>         at org.apache.geronimo.jetty.connector.JettyConnector.doFail(JettyConnector.java:102)
>         at org.apache.geronimo.gbean.runtime.GBeanInstance.createInstance(GBeanInstance.java:869)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInstanceState.java:328)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.java:111)
>         at org.apache.geronimo.gbean.runtime.GBeanInstance.start(GBeanInstance.java:486)
>         at org.apache.geronimo.gbean.runtime.GBeanSingleReference.attemptFullStart(GBeanSingleReference.java:154)
>         at org.apache.geronimo.gbean.runtime.GBeanSingleReference.targetAdded(GBeanSingleReference.java:127)
>         at org.apache.geronimo.gbean.runtime.AbstractGBeanReference.addTarget(AbstractGBeanReference.java:242)
>         at org.apache.geronimo.gbean.runtime.GBeanSingleReference$1.running(GBeanSingleReference.java:163)
>         at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.fireRunningEvent(BasicLifecycleMonitor.java:155)
>         at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor.access$300(BasicLifecycleMonitor.java:38)
>         at org.apache.geronimo.kernel.basic.BasicLifecycleMonitor$RawLifecycleBroadcaster.fireRunningEvent(BasicLifecycleMonitor.java:231)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.attemptFullStart(GBeanInstanceState.java:352)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.start(GBeanInstanceState.java:111)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.startRecursive(GBeanInstanceState.java:133)
>         at org.apache.geronimo.gbean.runtime.GBeanInstance.startRecursive(GBeanInstance.java:503)
>         at org.apache.geronimo.kernel.basic.BasicKernel.startRecursiveGBean(BasicKernel.java:207)
>         at org.apache.geronimo.gbean.runtime.GBeanInstanceState.startRecursive(GBeanInstanceState.java:141)
>         at org.apache.geronimo.gbean.runtime.GBeanInstance.startRecursive(GBeanInstance.java:503)
>         at org.apache.geronimo.kernel.basic.BasicKernel.startRecursiveGBean(BasicKernel.java:207)
>         at org.apache.geronimo.system.main.Daemon.doStartup(Daemon.java:247)
>         at org.apache.geronimo.system.main.Daemon.<init>(Daemon.java:81)
>         at org.apache.geronimo.system.main.Daemon.main(Daemon.java:320)
> Only later does the BindException show up, whereas I believe the BindException should
be first (and in fact only -- what good does the NPE do?).
> So what I think should happen is that we should trap a BindException, and if it comes
up, don't try to stop the SocketListener (or at least don't generate another exception if
it doesn't work).  Then print an ERROR message including the port number (ERROR: Jetty unable
to bind to port 8080).  Then throw the BindException if the full stack trace would be useful.

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