No OpenID endpoint found for DotNetOpenAuth ASP.NET MVC Login sample

I am trying out DotNetOpenAuth ASP.NET MVC Login sample. I am able to log in using Google endpoint only. If I use anything else (like Blogger or Yahoo) I get No OpenID endpoint found. What could be the problem here?

I have tried logging errors as s开发者_如何学编程uggested here but this does not seem to work for a MVC sample.

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The problem seems to have been in the fact that OpenIdRelyingParty.SecuritySettings.RequireSsl has been explicitly set to true. After commenting this out, suddenly all other OpenID providers started working. It seems as if Google is the only one supporting SSL.