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Logout Problems

 
Johnson Samuel
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Hi,
I have got a problem. Any suggestions/tips are welcome.
I have to restrict number of log-in's .
Hence when a user logs in and quits by closing the browser without logging off, I need to be notified so that i can do some database activity such as reducing the active session.
I tried using HttpSessionBindingListener it didnt work properly, i was notified when i inValidated the session but didnt when closed the browser.
As a temporary solution i am running a timer at backend so the session live till the time i specify some seconds.
Any alternate suitable would of great help and thanks in advance
 
Tim Holloway
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Forget about figuring out when a user has logged off. In a web context, there's not enough visual feedback to let him/her know. They can pop over to eBay and come back again and still be logged on. Then there's the problem of the "Blue screen" type of logoff, which (obviously!) isn't going to give you feedback! And of course, some hacker would find a way to exploit it anyway (NEVER trust control information sent from a client!).
Your server may not be advanced enough to support the feature you want - end-of-session detection is a recent addition provided because everyone else ran into the same sort of problem.
If you can, upgrade, if not, I think you're solving the problem the right way.
 
srikanth bukkapatnam
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You could try..
httpSession.setMaxInactiveInactiveInterval(int millisecs);
or get the httpSession.getLastAccessedTime() compare it with current time and invalidate session if the time in milliseconds is greater that certain time limit..
Thanks
Srikanth
 
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