private void AuthDepot()
{
Uri authURI = BuildCommand(endPoint, "authdepot");
PrepareAuthHeader(ref webClient, authURI);
webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
byte[] encryptedTicket = CryptoHelper.SymmetricEncrypt(appTicket, sessionKey);
string payload = String.Format("appticket={0}", WebHelpers.UrlEncode(encryptedTicket));
string response = webClient.UploadString(authURI, payload);
}