I can't - I get an HTML response, with the XML in queue:
On page, I see:
mdo:service-url gives me: : /DesktopModules/XsltDb/ws.aspx?service=test&mod=687
But the POST is sent over HTTPS, not HTTP, and gets the above response (I'm actually using a slightly modified sample, but that's not the problem - see below).
I believe the problem could be with DNN SSL configuration: the page is set as secure, and in site settings I have "ssl enforced" enabled.
This already caused me some troubles: when users navigate a non secure page requesting HTTPS, they are forced to load the page twice, the former in SSL with the js injected (but pages is fully loaded loaded), the second in HTTP caused by the js.
I was able to avoid the double page load by putting a function in my skins:
if not TabController.CurrentPage.IsSecure andalso Page.Request.IsSecureConnection=true then
response.redirect("http://" & Page.Request.Url.Host & Page.Request.RawUrl.ToString)
Maybe something similar could be needed for mdo:services?
Here's my ssl test:
<div id="result" style="border:solid 2px #ff0000;"></div>
<mdo:service name="test" type="text/xml">