[mapserver-users] WMS 1.3.0 questions

[Bart van den Eijnden]

I think it is a bad idea to default to a certain version in GetMap. Version is a required parameter and an exception should be thrown if a version is not known. Also to avoid issues that Yves M has raised.

Bart

Sent from my iPhone

On Nov 10, 2010, at 4:18 PM, Yves Moisan <yves.moisan at boreal-is.com> wrote:

> Le 2010-11-09 21:48, Jeff McKenna a écrit :
>> 
>> Hello Yves, 
> Hi Jeff,
>> 
>> Some related thoughts: 
>> 
>> - related ticket for configuring default WMS version: http://trac.osgeo.org/mapserver/ticket/3444 ...please add yourself to the CC list of that ticket and join in the discussions and testing and feedback, thanks 
> I added myself in the cc list.  The description of that ticket says "For example in WMS if the version parameter is not set, MapServer usually defaults to the latest supported version (1.3.0)."  If I read this correctly, if I change MapServer from 5.2.x to 5.6 and I happen to be working with EPSG codes that have their axes flipped between 1.1.1 and 1.3.0, my WMS requests won't work anymore IF i didn't specify a version number.  Ouch.  
> 
> Also, what happens if I specify a non existent, but valid, number like 1.2222 ?  I know an image is an image as Jukka mentioned, but how do I know how MapServer interpreted my faulty version number ?  Does it default to the latest supported version too ?
> 
>> - doc pointers: http://www.mapserver.org/ogc/wms_server.html#wms-1-3-0-support ...specifically see the 2 working 1.3.0 example requests there 
> 
> I've seen those.  I can see the request parameters all right, it's just that I'm not sure how MapServer reacts.  I know it chokes if I send VERSION=abc, but it will send me an image whatever I use for a version number as long as it is of the forms x.y or x.y.z.  VERSION=1234.4567.890 will work !  Because I get only an image back, how do I know how MS handled the request ?  Is there a response header I'm missing somewhere ?
> 
> Thanx.
> 
> Yves
> 
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