CODEWITHSUNDEEP
apache-mina
Kannan Ekanath
Kannan Ekanath

Reputation: 17601

Apache MINA session close call back

Apache Mina - 2.0.1

I have a IoHandlerAdapter which has call backs on sessionOpened and sessionClosed. When I open a session I login to the server and start sending requests, in "sessionClosed" I just restart my application.

My application makes a check

if(!session.isClosing()) {
   //write to socket
} else {
   //throw a runtime exception. Hopefully the sessionClosed API gets 
   //called soon and the next time this call will succeed.
}

However I did notice that although the session.isClosing() returns true the session actually never gets closed. i.e, I dont really get the call back in my handler. Is this possible? How can I mitigate against such a risk. Can someone explain how long it takes for the close callback to be called?

Upvotes: 1

Views: 2412

Answers (2)

sydraz
sydraz

Reputation: 653

I have seen this too. I believe this could be a race condition in the MINA layer:

http://mail-archives.apache.org/mod_mbox/mina-dev/200802.mbox/%[email protected]%3E

Upvotes: 0

Paul Gregoire
Paul Gregoire

Reputation: 9793

IMHO you should use a CloseFuture for this senario like so:

CloseFuture future = session.close(true);
// wait until its closed, up to 1 minute
future.awaitUninterruptibly(60000L);
if (future.isClosed()) {
    System.out.println("Previous connection close completed");
}

Upvotes: 0

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