[mapguide-users] How to check if session is expired?

[Martin Morrison]

The cautionary statement that should accompany this is:

Users will leave a session up.  This "could" on a heavily loaded site,
cause issues with the server running out of connections/resources.

I'm not saying that it is always a bad thing, you just need to be aware.

Martin

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of gingerbbm
Sent: Wednesday, November 26, 2008 11:46 AM
To: mapguide-users at lists.osgeo.org
Subject: Re: [mapguide-users] How to check if session is expired?


FYI I have implemented the following "keep alive" functionality in
Fusion.

This JavaScript excerpt uses the PeriodicalExecuter() class from
Prototype.
Place it in your "Fusion initialised" function. It will do a getScale()
every 20 minutes and it appears to keep the map live all day :)

	//
	// Periodically poll the MapGuide server to keep the session
alive.
	//
	var map = Fusion.getMapById('Map');
	new PeriodicalExecuter(
		function(pe) {
			console.log('Employing keep-alive measures [' +
new Date() + ']');
			map.getScale();
		},
		1200 // period, in seconds
	);

Hope this helps somebody...

Cheers
Stuart
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