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Editorial Team
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Asked: 2026-05-14T19:46:22+00:00

I need to be notified any time a largeish asp.net mvc web application makes

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I need to be notified any time a largeish asp.net mvc web application makes an ajax call to the server. We’re using both jquery, and the built-in Ajax.* methods to do the remote calls, and I would like a global way of knowing when we make a call without having to manually inject some sort of “IsMakingCall” method to every request.

The root problem we’re trying to solve is session timeout. If the user leaves a page up and goes to lunch (for example), they get errors when they get back because the ajax call is returning the login page instead of the expected json or partial html result.

My idea was to have a js timer which would be reset any time we make an ajax call. That way, if the timer runs out (ie. their session has now timed out) I can just auto-log them out. This is how sites like bank of america and mint.com work.

Thanks!

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  1. Editorial Team

    I handle the problem you describe in a different fashion, client-side. I have a jQuery plugin on my master page that will prompt the user to renew their session via a dialog just before it is set to expire. If the user doesn’t respond (or clicks logout), it calls the logout action on the application. If the user “renews” their session, it makes an AJAX call back to the server, resetting the sliding window server-side.

    You can find code on my blog, http://farm-fresh-code.blogspot.com. Right now it doesn’t take account of AJAX actions that may renew the session, but you could instrument it so that jQuery AJAX, via a global ajaxStart would reset the timer. It uses ajaxStart to reset the timer when a jQuery AJAX request is made. I don’t use MS AJAX much so I’m not sure if there’s a global hook you can use. It doesn’t appear so from inspecting the code, but you could manually add one via AjaxOptions to each request. You might investigate adding a handler to the Sys.Net.WebRequestManager, too.

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