I'm looking for a way to detect that the current session has expired (or
logged out via another tab on the browser). I know I could just issue
dummy requests to the server and see if a login page comes back. But
issuing requests automatically resets the session timer. I need a benign
way to query that doesn't keep the session alive forever.
I'm sure this problem has been solved before. But basically, I want to
know that the session is no longer valid and force the user back to the
login page. I know one possibility is to set the Tomcat timer to 30 min
expiration, and then keep a '29 minute' timer running in the browser.
But my clients can change the tomcat session timer length. And also
this doesn't account for a logoff using the same session on a different
browser tab. I'd really like a pro-active query method if anything like
that exists.
Suggestion?
Thanks.
Jerry
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