> The 2.1.1 has exactly the same behavior here. The reader thread stucks
> at
> read even after socket.close(). After about 1 minute the read returns
> without any exception and the program then terminates properly. I'll
> try
> to solve it today and will eventually deploy 2.1.2 again.
Well, I've tested it here with all possible combinations, incl.
interrupting the reader thread. It has no effect. The reader hangs on
read.
This is NOT a SwiftMQ issue but probably a JDK platform problem. I've
attached a very simple testdriver to test it. It produces exactly the same
behavior. It creates a socket, starts a thread to read from the input
stream, sleeps 1s, and closes the socket. The reader hangs. Just try it
with java -cp . TestSocket localhost 23. This is the telnet port.
Strange wise: if I ctrl/z the hanging program and put it in the foreground
again with "fg", it terminates properly with a socket exception.
There must be something wrong with the signaling of the JVM. A SwiftMQ
clients exits after about 60s, because the keepalive interval is 60'000.
The timer is definitively destroyed at the client (I've checked it!). But
the router sends a message in this interval. This might cause a signal at
the client socket which results in termination. If you set the keepalive
interval to 10s, the client terminates after 10s.
So, for you, a workaround could be:
- use 1.3.0 or better with -classic at your client
- try 1.2.2 with -native
- simply use System.exit at your client
- use a keepalive interval of 1000 (1s) for the JMS listener
I don't found a bug in the bug database of JavaSoft. So I can do simply
nothing on this issue. If someone has an idea, please tell me.
--
Andreas Mueller, IIT GmbH, Bremen/Germany, http://www.iit.de
SwiftMQ - JMS Enterprise Messaging System, http://www.swiftmq.com
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TestSocket.java
