sessions management

sessions management

I have a problem with the session management of my applcation deployed in tomcat. in fact, my application allows only one session to a login / password given.

I then add in the database a flag for each user (isConnected).

if the user logs on I set my flag to 1, if he logs off I set my flag to null using a SessionListener.

in a normal scenario,normal connection / disconnection , it works very well, by cons in the case of a disconnection

abnormal (stop the process of the browser or shutdown the machine), I can not detect the end of the session and I have to wait for the TimeOut.

so if the user reconnects, he will be blocked (a session already exists for this account).

I work with Tomcat 5.5, Servlet server side and client side applets.

thank you for your help.

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