How to update user login status upon close browser

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March 18th, 2008, 09:02 PM

benjaminkang

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How to update user login status upon close browser

Hi guys, sorry for posting this kind of petty questions, but i'm really facing problem with this,

is there a way for me to automatically logs out the user from the database when the user closes his browser? or is there a way to work around it?

the only success ive gotten so far is by timing out the user upon inactivity for n period.

any help will be useful

thanks.

March 18th, 2008, 09:15 PM

curiousnewbie

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Here is a solution

http://www.bennadel.com/blog/1131-Ask-Ben-Ending-ColdFusion-Session-When-User-Closes-Browser.htm

google is your friend

March 18th, 2008, 09:56 PM

benjaminkang

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yeah i've checked out the link previously and have implemented session. But that only fixes the function part.

here, let me explain more on what i wanna do

Code:

   If cookie isDefined
	if cookie/session/etc values are the same
		if loginstatus is false
			then login is approved
		else, 
			send user back out
	else
		if loginstatus is false
			then login is approved
		else,
			if the user closes the window without logging out then login status is still true, and since its still true.
				function(check)<-- i can't figure out on how to do this, just having session variables is not enough.
			else
				send user out		 
Else
	Force User To Enable Cookie Before Attempting Log In

March 18th, 2008, 10:05 PM

kiteless

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Location: Raleigh, NC

Posts: 3,475

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You can't reliably do this. HTTP is stateless, and when the user closes their browser, there is no reliable way to tell the server anything. There are probably JavaScript hacks floating around out there that will try to trigger some last-minute notification to the server, but those are not reliable.

The best you can do is set up per-session cookies. When the user closes their browser, they have lost their connection to that session. At that point, after whatever session timeout period you have set, the session will end (and OnSessionEnd() will be called if you are using Application.cfc). But other than this, there is nothing you can do, it's a result of the stateless nature of HTTP.

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March 19th, 2008, 09:06 AM

kiteless

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To restate this, the only reliable way to end a user's session is if they press a logout button. Unless they do that, you have to wait for the session to expire.

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