static void Main(string[] args)
        {
            var form = "rc_username=userMailHere&rc_password=userPasswordAsPlainTextHere";
            var bytesToSend = Encoding.UTF8.GetBytes(form);
            WebRequest request = WebRequest.Create("http://theAuthenticationEndpoint.net");
            request.Method = WebRequestMethods.Http.Post;
            //request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = bytesToSend.Length;
            using (var stream = request.GetRequestStream())
            {
                stream.Write(bytesToSend, 0, bytesToSend.Length);
            }
            var response = request.GetResponse();
            //var status = ((HttpWebResponse)response).StatusCode;
            var responseText = (new StreamReader(response.GetResponseStream()).ReadToEnd());
        }