only allow one user at a time

[transtech]

Hi all,

I am writing a jsp application now that required only one user to use the session at a time, if anyone knows how to do it, can you please tell me.

Thanks in Advance,

evan

 

[wushutwist]

You could use a SessionListener (Servlet 2.3) and set a flag in memory when a Session is created and uncheck the flag when the Session is destoryed. Before creating a new Session check your flag to see if anyone else is using the application. This will ensure at most one user.

Make sure that the check and set of your flag is in a single synchronized method to remove threading issues.