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

[Chris Claydon]

Fusion already accesses the MG server periodically to keep the session alive. From my server log, it looks like it does it every 5 minutes by default.

Chris.

-----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 9:46 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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