Session expired message in form based authentication

Question

Hi, i m using JAAS form based authentication on jboss for our application and we want session expired message to show in the login form when it loads for authentication after session expired.
do any one have any idea how to achive this as the application will never be able to detect that the session expired as it will always have a valid session available becoz ,When an HTTP session expires and the client makes a request to any secured resource, the JAAS subject will not be found for authorization. At this point, the security framework creates a new HTTP session, stores the target URL value in the session, and then redirects the user to the login page. After a successful login process, the user is forwarded back to the target page,
but our Web applications may need to capture these session expiration events and show some custom message to the user.
HTTP session listener doesn't work here as HTTP session listener does not allow you to create a new session.
Thanks in advance

Answer 1

ObSSOCookie does have session time data. Access Manager SDK can parse the cookie and can access it's own settings for max and idle session time.
Trick is, once the user is logged out, the cookie is destroyed. I suspect there is no real practical way to do this.
I have pondered the idea that you could use AJAX to communicate with a service that uses the SDK to return data about current session state - "You have 40 seconds left to get your form filled out, buddy! 39, 38, 37..."
Oh to have that much free time... ;)
Mark