BingMaps Silverlight can not use tilesouce that is http, only https works

Question

I've been following a whole bunch of tutorials on how to get overlays working in bing maps silverlight and they all appear to not even mention this problem of mine.

Example of tutorial: https://alastaira.wordpress.com/2011/01/07/accessing-a-wms-tile-server-from-bing-maps-silverlight/

What is happening is i set the tilesource to something like: "http://wms1.ccgis.de/cgi-bin/mapserv?map=/data/umn/germany/germany.map&&VERSION=1.1.1&REQUEST=GetMap&SERVICE=WMS&SRS=EPSG%3A4326&BBOX={0}&WIDTH=256&HEIGHT=256&LAYERS=Bundeslaender"

When i run the application and check the calls with fiddler not a single call is made to this service. If i change the source to start with https then the calls are seen in fiddler.

I also tried spinning up a webclient and doing a get request on http://google.com and fiddler actually recorded a call to http://google.com/clientaccesspolicy.xml which seems to be in line with how its supposed to work.

I have the following xml files in my website root.

ClientAccessPolicy.xml

    <?xml version="1.0" encoding="utf-8"?>
<access-policy>
  <cross-domain-access>
    <policy>
      <allow-from http-request-headers="SOAPAction">
        <!-- IMPORTANT! Include these lines -->
        <domain uri="https://*"/>
      </allow-from>
      <grant-to>
        <resource path="/" include-subpaths="true"/>
      </grant-to>
    </policy>
  </cross-domain-access>
</access-policy>

crossdomain.xml

<cross-domain-policy>
    <allow-access-from domain="*.*" headers="SOAPAction"/>
    <allow-http-request-headers-from domain="*.*" headers="SOAPAction"/> 
    <site-control permitted-cross-domain-policies="master-only"/>
</cross-domain-policy>

Anyone have any ideas? It just seems like the bingmaps SDK just refuses to even attempt an http call.

Answer 1

If your own Silverlight app is hosted on https, it cannot make requests to any http sites. I assume this is the reason - otherwise it should work