RTC Restful API autentication

The IBM RTC RESTful api gives an example of a shell script for authenticating with the server:

COOKIES=./cookies.txt

USER=my_user
PASSWORD=my_password
HOST="https://myJazzServer:9092/jazz"

curl -k -c $COOKIES "$HOST/authenticated/identity"

curl -k -L -b $COOKIES -c $COOKIES -d j_username=$USER -d j_password=$PASSWORD "$HOST/authenticated/j_security_check"

This works perfectly, however i need to authenticate with the server using c#.

So far i have the following, but it isn't working:

        CookieContainer _cookie;



        public string RTC()

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://myJazzServer.com:9092/jazz/authenticated/identity");

            if (_cookie == null)

            {

                _cookie = new CookieContainer();

            }

            string a;

            request.CookieContainer = _cookie;

            using (var response = request.GetResponse())

            {

                using (StreamReader sr = new StreamReader(response.GetResponseStream()))

                {

                    a = sr.ReadToEnd();

                }

            }









            byte[] data = (new ASCIIEncoding()).GetBytes("j_username=myUser&j_password=MyPass");



            request = (HttpWebRequest)WebRequest.Create("https://myJazzServer.com:9092/jazz/authenticated/j_security_check");



            request.Method = "POST";

            request.ContentType = "text/html";

            request.ContentLength = data.Length;

            request.CookieContainer = _cookie;

            Stream reqStream = request.GetRequestStream();

            reqStream.Write(data,0,data.Length);



            string b;



            using (var response = request.GetResponse())

            {

                using (var reader = new StreamReader(response.GetResponseStream()))

                {

                    b = reader.ReadToEnd();

                }

            }

        }

Any ideas what the problem is here, is there a .net api?