Hi, I have never tried to cascade GetFeatureInfo from Mapserver to other WMS servers but I have tried to do that when Geoserver is used for cascading our Mapserver. I would say that it is complicated. First issue is that the list of supported info_formats is a per service feature, not per layer. For example Geoserver by default supports these formats:
<GetFeatureInfo> <Format>text/plain</Format> <Format>application/vnd.ogc.gml</Format> <Format>application/vnd.ogc.gml/3.1.1</Format> <Format>text/html</Format> <Format>text/javascript</Format> <Format>application/json</Format> If I try to cascade Mapserver WMS that is configured to support only info_format=text/html with Geoserver, then users can't know that info_format=text/plain can't work with the cascaded layer. Actually no info_format will work in this theoretical case because Geoserve is always using "application/vnd.ogc.gml" when it cascades GetFeatureInfo but our Mapserver was not configured to support that. I have no idea about how Mapserver should be configured to support GetFeatureInfo for cascaded WMS layers. I do not believe that it is even possible to do it generally in a reliable way so that any WMS could do it successfully with any other WMS. Probably Mapserver can do is in some cases because http://mapserver.org/ogc/wms_client.html documents * GetFeatureInfo is not fully supported since the output of getFeatureInfo is left to the discretion of the remote server. A method layer.getWMSFeatureInfoURL() has been added to MapScript for applications that want to access featureInfo results and handle them directly -Jukka Rahkonen- Berger, Cora wrote: Dear Steve, yes, I have read this. My layers do cascade. The only thing that doesn't work is the GetFeatureInfo Request. The original WMS supports GetFeatureInfo. But if I connect to this WMS and use it as a layer for my new WMS GetFeatureInfo stops working. Cora Von: [email protected]<mailto:[email protected]> [mailto:[email protected]] Gesendet: Mittwoch, 28. Oktober 2015 13:25 An: Berger, Cora Cc: '[email protected]'; mapserver-users Betreff: RE [mapserver-users] Cascaded WMS GetFeatureInfo Cora have you read this? http://mapserver.org/ogc/wms_server.html#cascading-wms-request It might help to know why a layer is not cascaded What happen if you don't modify the style? steve "Berger, Cora" <[email protected]<mailto:[email protected]>>@lists.osgeo.org Envoyé par : "mapserver-users" <[email protected]<mailto:[email protected]>> 2015-10-27 04:01 A "'[email protected]'" <[email protected]<mailto:[email protected]>> cc Objet [mapserver-users] Cascaded WMS GetFeatureInfo Hello everybody, I am building a cascaded WMS. My layers all have connectiontype WMS and all of them use one layer of the same WMS as source. The only thing I change is the style of the original WMS. My problem is that the GetFeatureInfo does not cascade. I am using Mapserver 7.0. I read that the GetFeatureInfo request supports cascading. All requests are enabled in the metadata. Do I have to add a special tag in the metatada or layer section to "pass through" the GetFeatureInfo from the original WMS? Thanks for your help. Best regards Cora Berger _______________________________________________ mapserver-users mailing list [email protected]<mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/mapserver-users
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