In my application I have a login page after providing correct login information I am able to login to the application and I can navigate to all the pages. The problem now is say suppose if I am in third page or some other page in the appliation, and if I copy the url and paste it in the new browser window the application is showing the page, in that situation I need to show the login page because in the new window user doesn't provide user name and password and there is no session to that new window. How can I redirect the user to the login page in that situation.
I'm not sure why this would matter, honestly. If you're worried about authentication, if the same user pastes the url from an authenticated session in 1 browser into another browser, it's still the same user that's already authenticated. If instead, you're trying to force the application to only be open in one browser at a time, you could set some field in a database or cookie or something that says the user is already logged on, and then flip that bit when they logout or timeout ... What exactly is your concern? Hope this helps.