[Freegis-list] Have Geoportal's WMS requests in server or client?

[Bart van den Eijnden (OSGIS)]

Mapbuilder also does the requests from the browser.

I used to be in favour of the server-side approach, but I've come to like
the client-side approach better.

Some considerations:

1) on the server you can use Mapscript which gives you advanced projection
support for instance (hard but not impossible to do this in javascript)
2) on the server you can integrate all layers into one image which could
save bandwidth from the user's browser (third-world countries e.g.)

Best regards,
Bart

--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl


--------- Oorspronkelijk bericht --------
Van: Stephan Holl <stephan.holl at intevation.de>
Naar: freegis-list at intevation.de <freegis-list at intevation.de>
Onderwerp: Re: [Freegis-list] Have Geoportal's WMS requests in server or
client?
Datum: 10/05/07 06:36

> Hello Jan-Oliver,
> 
> &quot;Jan-Oliver Wagner&quot; &lt;jan-oliver.wagner at intevation.de&gt;,
[20070510 -
> 10:31:54]
> 
> &gt; Hello,
> &gt; 
> &gt; in the frame of security issues I came across the question what
> &gt; the particular reasons are why geo-portals (MapBender, iGeoPortal,
> &gt; p.mapper etc) do not execute WMS requests entirely on the client side
> &gt; (in JavaScript, like OpenLayers does) but rather do it on the server
> &gt; side (some do only GetCapabilities, some also GetMap).
> &gt; 
> &gt; The reasons I could imagine are:
> &gt; * it was easier t o implement it this way
> &gt; * with intensive JavaScript use we exclude some browsers.
> &gt; 
> &gt; I am extremely intersted if there are reasons beyond these
> &gt; and would be thankful for any feedback.
> 
> Probably MapBuilder does the GetMap-Requests on client-side, but I am
> not sure, need to check. Probably someone can answer more clearly here?
> 
> Best
> 
> 	Stephan
> 
> -- 
> Stephan Holl &lt;stephan.holl at intevation.de&gt;,
http://intevation.de/~stephan
> Tel: +49 (0)541-33 50 8 32 | Intevation GmbH | AG Osnabrück - HR B 18998
> Geschäftsführer:  Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
> 
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