Some time ago on the HTML5 list[1], I brought up the problem that there wasn't
a straightforward way for a server to determine when the user had closed all
windows/tabs. We eventually came up with the idea of using a "rel"
extension[2] to specify a "logout" feature[3]; the browser pings the server
when all related windows/tabs are closed.
I am soliciting feedback on the idea: is this something that Mozilla would
consider adding to Firefox?
Currently, the only way that I'm aware of to determine when a user has closed
all related windows/tabs is by having the browser poll the server at a regular
interval, and once the polling stops, the server knows the user is no longer
actively using the site.
Thanks,
- Bil
[1] "When closing the browser" thread:
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-December/thread.html#17764
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2009-April/thread.html#19406
http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2009-June/thread.html#20150
[2] http://wiki.whatwg.org/wiki/RelExtensions
[3] http://wiki.whatwg.org/wiki/LogoutRelExtension
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