[DIRMINA-273] Session created with non-existent service

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.4, 0.9.5, 1.0.0
• Fix Version/s: 1.0.1
• Component/s: Core
• Environment: Windows 2000 SP4, Java 1.5.0_08
• Assignee: Trustin Lee
• Reporter: Raman Gupta
• Created: 02/Oct/06 04:19
• Updated: 26/May/09 00:57
• Resolved: 17/Oct/06 06:08

Description

On Windows 2000, when attempting to connect to a service on a port where no service is running (either locally or remotely), Mina will sometimes create and open a session instead of throwing an IoException. This session is of course unusable, and when attempting to use it an exception is thrown (the following exception from Mina 0.9.4):

java.nio.channels.NotYetConnectedException
at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:129)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:294)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.doFlush(SocketIoProcessor.java:480)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.doFlush(SocketIoProcessor.java:412)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.access$500(SocketIoProcessor.java:41)
at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(SocketIoProcessor.java:568)

This is reproducible within a few seconds with the attached test case on Windows 2000 on Mina 0.9.4 and Mina 1.0.0. I also attempted to reproduce this on Linux 2.6.17 but was unable to.

I have attached two test cases, one MinaConnectTest and one MinaConnectTest10, the former is for 0.9.4 and the latter is for 1.0.0 – the only change is the exception caught.

Though the attached test case fails uses only localhost (to avoid DNS complications), the test case also fails if a remote host is used. I tested with a remote host running Solaris 8 from a Windows client.

Lastly, netcat in a tight loop was used concurrently with the test to verify that the port was indeed refusing connections.