How to notify the server when the user leaves page?

Question

I have a ASP.NET MVC web application that needs to notify the server when a user leaves. To do so, I make an Ajax call posting a string to the server.

Currently, I'm making the call on the window.onbeforeunload event, but to do more than show the user a message, this event is very unreliable.

The other ways I come up to do this was by using SignalR to do a ping-pong request or to control something (session?) on the server side.

What's the best approach to make the server know when a user leave the application?

If I leave the browser open, but lock my computer and go grab a beer, do you consider me as having left your application? — Justin Helgerson, Jun 30 '14 at 18:55
@JustinHelgerson yes. After some time I consider that he has left the application. — Andre Nascentes, Jun 30 '14 at 19:20

score 1 · Accepted Answer · edited May 23 '17 at 12:05

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Here's an aproach for detecting iddle time in a page Detecting idle time in JavaScript elegantly. And to detect disconnection I suggest you use handsaking approach (that can be used with signalR as you pointed out): http://en.wikipedia.org/wiki/SYN-ACK#Connection_establishment

edited May 23 '17 at 12:05

Community

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answered Jun 30 '14 at 19:51

Augusto

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How to notify the server when the user leaves page?

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