I wonder how gmail/Google keeps a user logged in even across sessions. And how (e.g. cookies) and what (e.g. time) do they use to decide to re-prompt the user for the login?
+2
A:
The short answer is that cookies do not have to expire when you close down the broweser or the machine they are on. Depending on constraints configured in the browser, if the server sets an expiry date in the future, the browser will continue to present the cookie until that expiry time.
C.
symcbean
2010-08-11 15:37:35