AuthenticationController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.IdentityModel;
using System.IdentityModel.Claims;
using System.IdentityModel.Services;
using System.Diagnostics;

namespace STS.Controllers
{
    public class AuthenticationController : Controller
    {
        [Route("")]
        public void Index()
        {
            // Deserialize the incoming WsFederation request into an object
            var wsFederationMessage = WSFederationMessage.CreateFromUri(Request.Url);
            // Write out all the stuff we got inside that request
            Trace.Write(String.Join("\n", wsFederationMessage.Parameters.Select(i => String.Format("Found a key {0} with value {1}", i.Key, i.Value))));        }
	}
}