Niklas Gustavsson wrote:
Hey
Has anyone made any progress on the troubles with MINA 2.0 in
Glassfish? We have had some FtpServer users who have run into problems
when deploying FtpServer in Glassfish, and they seem to be related. I
just tried deploying our WAR example in Glassfish V2 UR2 b04 and got
the following exception thrown repeatedly:
[#|2008-10-21T11:16:20.593+0200|INFO|sun-appserver9.1|javax.enterprise.system.stream.out|_ThreadID=15;_ThreadName=NioSocketAcceptor-2;|[
WARN] 2008-10-21 11:16:20,593 [] [] Unexpected exception.
java.lang.NullPointerException
at
org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:206)
at
org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:48)
at
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Worker.processHandles(AbstractPollingIoAcceptor.java:451)
at
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Worker.run(AbstractPollingIoAcceptor.java:388)
at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
I'm sorry to say that I don't know the internals of NIO nor Glassfish
enough to track this down myself but I'll be glad to be of any help I
can to solve this. Should we maybe get in touch with our friends over
at Glassfish?
/niklas
On Fri, Aug 1, 2008 at 4:55 AM, Mezei Zoltan <[EMAIL PROTECTED]> wrote:
Hi,
I have a really simple client application that uses the following
method to establish a connection:
Logger logger = LoggerFactory.getLogger("test");
IoConnector ioConnector = new NioSocketConnector();
ioConnector.getFilterChain().addLast("logger", new LoggingFilter());
ioConnector.setHandler(new IoHandlerAdapter());
logger.debug("Before connect...");
ConnectFuture cf = ioConnector.connect(new
InetSocketAddress("localhost", 19971));
logger.debug("After connect...");
logger.debug("Before await...");
cf.awaitUninterruptibly();
logger.debug("After await...");
I created a standard java application that invokes this method and got
the following output:
04:37:58.575 [main] DEBUG test - Before connect...
04:37:58.581 [main] DEBUG test - After connect...
04:37:58.582 [main] DEBUG test - Before await...
04:37:58.596 [NioProcessor-1] INFO o.a.m.filter.logging.LoggingFilter - CREATED
04:37:58.597 [main] DEBUG test - After await...
04:37:58.598 [NioProcessor-1] INFO o.a.m.filter.logging.LoggingFilter - OPENED
04:37:58.609 [NioProcessor-1] INFO o.a.m.filter.logging.LoggingFilter
- RECEIVED: HeapBuffer[pos=0 lim=114 cap=2048: 43 49 4D 44 32 2D 41 20
43 6F 6E 6E 65 63 74 69...]
That's OK, I expected this behavior.
However I also created a web application that includes a
ContextListener. The ContextListener calls the method on startup and I
get this output:
04:30:48.469 [httpWorkerThread-4848-1] DEBUG test - Before connect...
04:30:48.477 [httpWorkerThread-4848-1] DEBUG test - After connect...
04:30:48.477 [httpWorkerThread-4848-1] DEBUG test - Before await...
04:30:48.481 [NioSocketConnector-1] WARN
o.a.m.core.DefaultExceptionMonitor - Unexpected exception.
java.lang.NullPointerException
at
org.apache.mina.core.polling.AbstractPollingIoConnector$ConnectionRequest.access$200(AbstractPollingIoConnector.java:517)
at
org.apache.mina.core.polling.AbstractPollingIoConnector.processTimedOutSessions(AbstractPollingIoConnector.java:446)
at
org.apache.mina.core.polling.AbstractPollingIoConnector.access$600(AbstractPollingIoConnector.java:64)
at
org.apache.mina.core.polling.AbstractPollingIoConnector$Worker.run(AbstractPollingIoConnector.java:471)
at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
What can go wrong when I use the web application? Can I make it work somehow?
I think there is something wrong in MINA code :
protected NioSession accept(IoProcessor<NioSession> processor,
ServerSocketChannel handle) throws Exception {
SelectionKey key = handle.keyFor(selector);
if (!key.isAcceptable()) { <--- Here, if the key is null, you
get a NPE...
I will fix that immediatly.
Could you check it with Glassfish when I will have committed the code ?
Thanks !
--
--
cordialement, regards,
Emmanuel Lécharny
www.iktek.com
directory.apache.org
