I ran it here on a E450 with Solaris 2.6, JDK 1.3.0 hotspot. The
TestSocket.java terminates normally with a SocketException. However, a
JMS client against a 2.1.2 router terminates normally as well
(samples/router_network/P2PSender, you must start smqr1 & 2 before). So
it seems a Linux & AIX problem (are you running AIX?).
May be it works when you upgrade to JDK 1.3.
--
Andreas Mueller, IIT GmbH, Bremen/Germany, http://www.iit.de
SwiftMQ - JMS Enterprise Messaging System, http://www.swiftmq.com
-----Original Message-----
From: Geoffrey Lowney <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Date: Mon, 2 Jul 2001 17:28:10 +0200
Subject: [developers] progarm hangs under 2.1.2
> When I run this test program, the reader does not hang. It receives a
> SocketException. I see the following output:
>
> $ javac TestSocket.java
> $ java -cp . TestSocket localhost 23
> sleeping
> before read
> after read
> before read
> after read
> before read
> after read
> before read
> after read
> before read
> after read
> before read
> after read
> before read
> closing socket
> closing socket done
> java.net.SocketException: socket closed: A file descriptor does not
> refer
> to an open file.
> at java.net.SocketInputStream.socketRead(Native Method)
> at java.net.SocketInputStream.read(SocketInputStream.java:98)
> at java.net.SocketInputStream.read(SocketInputStream.java:115)
> at TestSocket$1.run(TestSocket.java:21)
>
> Also, I do not see the same behavior in 2.1.1 and 2.1.2. My programs
> do not
> hang under 2.1.1.
>
> Is there any way to verify the socket.close() is being called by
> connection.close() as expected?
>
> Geoffrey A. Lowney
> Senior Software Development Engineer
> Recreational Equipment, Inc.
> Phone 253-395-8164 Fax 253-437-7291
> Pager 206-625-8477 [EMAIL PROTECTED]
> [EMAIL PROTECTED] http://www.rei.com/
> In order to draw a limit to thinking, we should have to think both
> sides
> of this limit.
> -- Ludwig Wittgenstein, Tractatus Logico-Philosophicus
>
>
>
> > -----Original Message-----
> > From: Andreas Mueller [mailto:[EMAIL PROTECTED]]
> > Sent: Saturday, June 30, 2001 6:10 AM
> > To: [EMAIL PROTECTED]
> > Subject: [developers] progarm hangs under 2.1.2
> >
> >
> >
> > > 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
> >
> > ------------------------------------------------------
> > SwiftMQ developers mailing list * http://www.swiftmq.com
> > To unsubscribe from this list, send an eMail to
> > [EMAIL PROTECTED] and write in the body of your message:
> > UNSUBSCRIBE developers <your-email-address>
> > Archive: http://www.mail-archive.com/developers@mail.iit.de/
> >
> >
> >
>
> ------------------------------------------------------
> SwiftMQ developers mailing list * http://www.swiftmq.com
> To unsubscribe from this list, send an eMail to
> [EMAIL PROTECTED] and write in the body of your message:
> UNSUBSCRIBE developers <your-email-address>
> Archive: http://www.mail-archive.com/developers@mail.iit.de/
>
>
>
>
------------------------------------------------------
SwiftMQ developers mailing list * http://www.swiftmq.com
To unsubscribe from this list, send an eMail to
[EMAIL PROTECTED] and write in the body of your message:
UNSUBSCRIBE developers <your-email-address>
Archive: http://www.mail-archive.com/developers@mail.iit.de/
