How to log in with Facebook using DotNetOpenAuth

Question

I have searched, read the FB developer docs.

MVC 4, I incorporated OpenId.
Now I want to include FB login as well, just as Stackoverflow and some other site have implemented it.

Do I create my own JS file with sample code from FB developer?
OR
Use a third party tools, which I am not aware of what to use. I did look at OAuthClient (DotNetOpenAuth-4.0.0.11165), it could not run, there was a server error and could not debug as the source file was missing.

Answer 1

Facebook implements an older OAuth 2 spec than the latest DotNetOpenAuth beta does. To interop with Facebook, you should use the CTP of v3.5 of DotNetOpenAuth to avoid the 400 Bad Request error.