[mapserver-users] wms_enable_request header vs. layer

Thu Dec 7 07:17:21 PST 2017

Hi,

The development of this feature was done by http://mapserver.gis.umn.edu/pl/development/rfc/ms-rfc-67.html.

RFC does not take into account all possible combinations to use the enable/disable rules at MAP and LAYER level. It seems that you have found one way to configure Mapserver so that it is not compliant to WMS standard and there may be more. I suggest to analyze the situation and make a bug report or feature request for new checks. The concrete bug, I guess, is that disabling GetMap removes the GetMap operation from GetCapabilities while it should keep  the operation, which is mandatory, but hide all the layers.

I guess that you can make Mapserver behave correctly by using  "wms_enable_request" "GetCapabilities GetMap" at the map level and by hiding all the layers with "!*", except for the layers you want to stay available.

-Jukka Rahkonen-

-----Alkuperäinen viesti-----
Lähettäjä: mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org] Puolesta Jörg Thomsen (WhereGroup)
Lähetetty: 7. joulukuuta 2017 16:36
Vastaanottaja: mapserver-users at lists.osgeo.org
Aihe: Re: [mapserver-users] wms_enable_request header vs. layer

Moin,

I think the problem is, that the Layers allow the GetMap-Request and MapServer does not provide the required Information in the capabilities.

Am I wrong?

Jörg

Am 07.12.2017 um 11:30 schrieb Passmore, James H.:> Technically QGIS (or any other client) is going against the WMS standard by requesting something not in GetCapabilities response, and MapServer is at fault for responding with something not advertised.
> 
> Of course a GetMap operation is mandatory for a WMS, so you might argue that MapServer is at fault for providing a GetCapabilities response that doesn't advertise a GetMap operation.
> 
> James
> 
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>    1. wms_enable_request header vs. layer (Jörg Thomsen (WhereGroup))
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 6 Dec 2017 13:41:36 +0100
> From: Jörg Thomsen (WhereGroup)  <joerg.thomsen at wheregroup.com>
> To: "mapserver-users at lists.osgeo.org"
> <mapserver-users at lists.osgeo.org>
> Subject: [mapserver-users] wms_enable_request header vs. layer
> Message-ID: <4dccde7c-ce96-e22a-af43-718d4631a8bb at wheregroup.com>
> Content-Type: text/plain; charset=utf-8
> 
> Hi,
> 
> I need an explanation for ows_enable_request.
> 
> There are two mapfiles, brw_enable_header.map and brw_enable_layer.map The only difference is, that in brw_enable_header.map I have enabled all ows requests within the metadata-section in the header and in each layer.
> 
> In brw_enable_layer.map I only have enabled all requests in the layer-section, but not in the header.
> 
> Both WMS allow the capability-request and in brw_enable_layer.map the information for the wms-request is missing:
> https://www.diffchecker.com/KjsX2Wbk
> 
> OK. The brw_enable_layer.map (with no ows_enable_reqeust in the header) allows GetMap-Requests:
> http://h2743629.stratoserver.net/cgi-bin/mapserv?map=/data/ows/map/brw
> _enable_layer.map&&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=48.60
> 086340827337636,9.02229999999999954,48.65160000000000196,9.07331344424
> 46044&CRS=EPSG:4326&WIDTH=426&HEIGHT=422&LAYERS=bodenrichtwertzone&STY
> LES=&FORMAT=image/png&DPI=96&MAP_RESOLUTION=96&FORMAT_OPTIONS=dpi:96&T
> RANSPARENT=TRUE
> 
> I think this is technically correct, but as the capabilities don't provide any information for the getMap-Request (no online-ressource, no image-formats), a client does not know this parameters. In the result I cannot load the WMS into a mabpender-application.
> I wonder why (and I am surprised) QGIS doesn't have any problems with this wms.
> 
> Is this how it shall be? Is MapServer working correct or Mapbender? Or both, but ...?
> 
> Regards, Jörg
> 
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Viele Grüße,
Jörg Thomsen

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