"java.lang.IllegalStateException: Can not fail" problem

[scheiner]

Hi All,

I have the following problem, that I hope you can help me to resolve:

I am using netty and some of my connections use secure (TLS) connection. 

For some reason, it looks like that some of the machines, when closing the
connection, throws the following exception:

2010-06-03 16:02:35,767 [Hashed wheel timer #2] DEBUG (Log4JLogger.java:43)
- [id: 0x00214f6b, /10.248.74.160:52342  => /10.195.97.219:6600] EXCEPTION:
java.lang.IllegalStateException: Can not fail
java.lang.IllegalStateException: Can not fail
    at
org.jboss.netty.channel.UnfailingChannelFuture.setFailure(UnfailingChannelFuture.java:44)
    at
org.jboss.netty.channel.socket.nio.NioWorker.close(NioWorker.java:595)
    at
org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:91)
    at org.jboss.netty.channel.Channels.close(Channels.java:1081)
    at
org.jboss.netty.handler.ssl.SslHandler$ClosingChannelFutureListener.operationComplete(SslHandler.java:915)
    at
org.jboss.netty.channel.DefaultChannelFuture.notifyListener(DefaultChannelFuture.java:366)
    at
org.jboss.netty.channel.DefaultChannelFuture.addListener(DefaultChannelFuture.java:139)
    at
org.jboss.netty.handler.ssl.SslHandler.closeOutboundAndChannel(SslHandler.java:883)
    at
org.jboss.netty.handler.ssl.SslHandler.handleDownstream(SslHandler.java:348)
    at
org.jboss.netty.handler.logging.LoggingHandler.handleDownstream(LoggingHandler.java:237)
    at
org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:59)
    at
org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:59)
    at org.jboss.netty.channel.Channels.close(Channels.java:1065)
    at
org.jboss.netty.channel.AbstractChannel.close(AbstractChannel.java:178)
    at
com.nolio.nimi.comm.impl.NimiConnectionImpl.close(NimiConnectionImpl.java:109)
    at
com.nolio.nimi.comm.impl.nettysupport.BasicHandler.closeChannel(BasicHandler.java:70)
    at
com.nolio.nimi.comm.impl.nettysupport.BasicHandler.channelIdle(BasicHandler.java:111)
    at
org.jboss.netty.handler.timeout.IdleStateAwareChannelUpstreamHandler.handleUpstream(IdleStateAwareChannelUpstreamHandler.java:46)
    at
org.jboss.netty.handler.timeout.IdleStateHandler.channelIdle(IdleStateHandler.java:285)
    at
org.jboss.netty.handler.timeout.IdleStateHandler$AllIdleTimeoutTask.run(IdleStateHandler.java:377)
    at
org.jboss.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:504)
    at
org.jboss.netty.util.HashedWheelTimer$Worker.notifyExpiredTimeouts(HashedWheelTimer.java:419)
    at
org.jboss.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:369)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: A non-blocking socket operation could not be
completed immediately
    at sun.nio.ch.SocketDispatcher.close0(Native Method)
    at sun.nio.ch.SocketDispatcher.preClose(Unknown Source)
    at sun.nio.ch.SocketChannelImpl.implCloseSelectableChannel(Unknown
Source)
    at
java.nio.channels.spi.AbstractSelectableChannel.implCloseChannel(Unknown
Source)
    at java.nio.channels.spi.AbstractInterruptibleChannel.close(Unknown
Source)
    at
org.jboss.netty.channel.socket.nio.NioWorker.close(NioWorker.java:577)
    ... 22 more
2010-06-03 16:02:35,767 [Hashed wheel timer #2] DEBUG (Log4JLogger.java:39)
- [id: 0x00214f6b, /10.248.74.160:52342 => /10.195.97.219:6600] CLOSE
2010-06-03 16:02:35,767 [Hashed wheel timer #2] DEBUG (Log4JLogger.java:39)
- [id: 0x00214f6b, /10.248.74.160:52342 => /10.195.97.219:6600] UNBOUND
2010-06-03 16:02:35,767 [Hashed wheel timer #2] DEBUG (Log4JLogger.java:39)
- [id: 0x00214f6b, /10.248.74.160:52342 => /10.195.97.219:6600] CLOSED
2010-06-03 16:02:35,767 [Hashed wheel timer #2] DEBUG (Log4JLogger.java:39)
- [id: 0x00214f6b, /10.248.74.160:52342 => /10.195.97.219:6600] CLOSE


When digging into the code, it looks like that the server is trying to write
more data after the channel is closed (maybe during the wrap call, when
there is still data in the buffer). 

Again, this does not happens all the time and only on certain machines (so
it is not consistent). 

Can you try to spot the problem? if more data is needed, I will be happy to
provide..

Tnx,
 Uri


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