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Posted to dev@mina.apache.org by "S. Nageswara Rao (JIRA)" <ji...@apache.org> on 2007/04/25 11:59:15 UTC
[jira] Created: (DIRMINA-373) NullPointer Exception in SocketAccept
class
NullPointer Exception in SocketAccept class
-------------------------------------------
Key: DIRMINA-373
URL: https://issues.apache.org/jira/browse/DIRMINA-373
Project: MINA
Issue Type: Bug
Affects Versions: 0.8.0
Environment: Windows XP
Reporter: S. Nageswara Rao
Fix For: 0.8.0
I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
java.lang.NullPointerException
at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
This has a considerable impact on my component.
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[jira] Closed: (DIRMINA-373) NullPointer Exception in SocketAccept
class
Posted by "Emmanuel Lecharny (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DIRMINA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Emmanuel Lecharny closed DIRMINA-373.
-------------------------------------
> NullPointer Exception in SocketAccept class
> -------------------------------------------
>
> Key: DIRMINA-373
> URL: https://issues.apache.org/jira/browse/DIRMINA-373
> Project: MINA
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Windows XP
> Reporter: S. Nageswara Rao
> Assignee: Trustin Lee
> Fix For: 0.8.0
>
>
> I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
> java.lang.NullPointerException
> at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
> at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
> at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
> This has a considerable impact on my component.
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[jira] Commented: (DIRMINA-373) NullPointer Exception in
SocketAccept class
Posted by "peter royal (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DIRMINA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493066 ]
peter royal commented on DIRMINA-373:
-------------------------------------
You can check the history of the code for 1.0 at:
http://svn.apache.org/viewvc/mina/branches/1.0/core/src/main/java/org/apache/mina/transport/socket/nio/SocketAcceptor.java?view=log
> NullPointer Exception in SocketAccept class
> -------------------------------------------
>
> Key: DIRMINA-373
> URL: https://issues.apache.org/jira/browse/DIRMINA-373
> Project: MINA
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Windows XP
> Reporter: S. Nageswara Rao
> Fix For: 0.8.0
>
>
> I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
> java.lang.NullPointerException
> at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
> at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
> at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
> This has a considerable impact on my component.
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[jira] Resolved: (DIRMINA-373) NullPointer Exception in
SocketAccept class
Posted by "Trustin Lee (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DIRMINA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Trustin Lee resolved DIRMINA-373.
---------------------------------
Resolution: Cannot Reproduce
Assignee: Trustin Lee
I compared the current SocketAcceptor code against that of 0.7.4 and couldn't find any noticeable difference, and I cannot reproduce the problem. Please attach a reproducing JUnit test code. I will mark this issue as 'cannot reproduce' for now.
> NullPointer Exception in SocketAccept class
> -------------------------------------------
>
> Key: DIRMINA-373
> URL: https://issues.apache.org/jira/browse/DIRMINA-373
> Project: MINA
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Windows XP
> Reporter: S. Nageswara Rao
> Assignee: Trustin Lee
> Fix For: 0.8.0
>
>
> I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
> java.lang.NullPointerException
> at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
> at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
> at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
> This has a considerable impact on my component.
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[jira] Commented: (DIRMINA-373) NullPointer Exception in
SocketAccept class
Posted by "Trustin Lee (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DIRMINA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491586 ]
Trustin Lee commented on DIRMINA-373:
-------------------------------------
We don't support MINA 0.8.x for now. Please upgrade to 1.0.3 or 1.1.0.
> NullPointer Exception in SocketAccept class
> -------------------------------------------
>
> Key: DIRMINA-373
> URL: https://issues.apache.org/jira/browse/DIRMINA-373
> Project: MINA
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Windows XP
> Reporter: S. Nageswara Rao
> Fix For: 0.8.0
>
>
> I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
> java.lang.NullPointerException
> at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
> at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
> at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
> This has a considerable impact on my component.
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[jira] Commented: (DIRMINA-373) NullPointer Exception in
SocketAccept class
Posted by "S. Nageswara Rao (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/DIRMINA-373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491603 ]
S. Nageswara Rao commented on DIRMINA-373:
------------------------------------------
Hi Tustin,
Thanks for the quick response. I wish I would upgrade to 1.1.0 but there also we can expect the same NullPointerException from cancelKey method of SocketAcceptor class.
Code snippet of SocketAccptor class:
private void cancelKeys()
{
if( cancelQueue.isEmpty() )
{
return;
}
for( ; ; )
{
CancellationRequest request = cancelQueue.poll();
if( request == null )
{
break;
}
ServerSocketChannel ssc = channels.remove( request.address );
// close the channel
try
{
if( ssc == null )
{
request.exception = new IllegalArgumentException( "Address not bound: " + request.address );
}
else
{
SelectionKey key = ssc.keyFor( selector );
request.registrationRequest = ( RegistrationRequest ) key.attachment();
key.cancel();
selector.wakeup(); // wake up again to trigger thread death
ssc.close();
}
}
catch( IOException e )
{
ExceptionMonitor.getInstance().exceptionCaught( e );
}
finally
{
request.done.countDown();
if( request.exception == null )
{
getListeners().fireServiceDeactivated(
this, request.address,
request.registrationRequest.handler,
request.registrationRequest.config );
}
}
}
}
If we can add the check for null value before calling cancel() on key, the problem gets solved.
if (key !=null)
key.cancel()
I have tried it on 0.7.4 version and it solved the issue. Since our component is moved to maven project building system and we created a mina dependency, I would like to see the fix in the mina source that is exposed under directory-network artifact-Id of the maven repository
> NullPointer Exception in SocketAccept class
> -------------------------------------------
>
> Key: DIRMINA-373
> URL: https://issues.apache.org/jira/browse/DIRMINA-373
> Project: MINA
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Windows XP
> Reporter: S. Nageswara Rao
> Fix For: 0.8.0
>
>
> I am using MINA v0.8.0 in my component. I hit upon the following NullPointer Exception when I try to call unbind method to unregister the service from the registry.
> java.lang.NullPointerException
> at org.apache.mina.io.socket.SocketAcceptor.cancelKeys(SocketAcceptor.java:431)
> at org.apache.mina.io.socket.SocketAcceptor.access$900(SocketAcceptor.java:47)
> at org.apache.mina.io.socket.SocketAcceptor$Worker.run(SocketAcceptor.java:240)
> This has a considerable impact on my component.
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You can reply to this email to add a comment to the issue online.