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Logout Problems

Johnson Samuel
Greenhorn

Joined: Jul 28, 2001
Posts: 4
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
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16051
    
  21

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.


Customer surveys are for companies who didn't pay proper attention to begin with.
srikanth bukkapatnam
Greenhorn

Joined: Jul 31, 2001
Posts: 7
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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subject: Logout Problems