payment gateway integration using atom in asp.net

how to  solve pls help me  anybody

The server committed a protocol violation. Section=ResponseStatusLine

 protected void Page_Load(object sender, EventArgs e)
    {


        string Url = null;
        try
     {            
    //string ATOMPaymentIP = ATOMPaymentIP; // PROVIDED BY ATOM //203.114.240.183--Stage
    //string ATOMLogin = ATOMLogin // PROVIDED BY ATOM
    //string ATOMPassword = ATOMPassword // PROVIDED BY ATOM
    //string ATOMTransactionType = ATOMTransactionType // PROVIDED BY ATOM
    //string ATOMProductId = ATOMProductId // PROVIDED BY ATOM


         string now = DateTime.Now.ToString("dd/mm/yyyy hh:mm:ss").Replace("-","/");

         string ATOMPaymentIP = "203.114.240.183"; // PROVIDED BY ATOM //203.114.240.183--Stage
    string ATOMLogin = "160"; // PROVIDED BY ATOM
    string ATOMPassword = "Test@123"; // PROVIDED BY ATOM
    string ATOMTransactionType = "NBFundTransfer"; // PROVIDED BY ATOM
    string ATOMProductId = "NSE"; // PROVIDED BY ATOM

   // HttpWebRequest request;

 //  HttpWebResponse response;
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + ATOMPaymentIP + "/paynetz/epi/fts");

    request.Method = "POST";
    Url = "http://" + ATOMPaymentIP + "/paynetz/epi/fts";
    request.ContentType = "application/x-www-form-urlencoded";
    request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; CK={CVxk71YSfgiE6+6P6ftT7lWzblrdvMbRqavYf/6OcMIH8wfE6iK7TNkcwFAsxeChX7qRAlQhvPWso3KI6Jthvnvls9scl+OnAEhsgv+tuvs=}; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
    int pos = Request.Url.AbsoluteUri.LastIndexOf('/');
   
    // PAYMENT RESPONSE PAGE
    string strURL = Request.Url.AbsoluteUri.Substring(0, pos + 1) + "responsepage.aspx";

    string postData = "custacc=1234567890&login=" + ATOMLogin + "&pass=" + ATOMPassword + "&ttype=" + ATOMTransactionType + "&prodid=" + ATOMProductId + "&amt=" + 3000 + "&txncurr=INR&txnscamt=0&clientcode=" + 007 + "=&txnid=" + 1 + "&date=" + now + "&ru=" + "http://" + ATOMPaymentIP + "/paynetz/epi/fts?" + "&udf1=" + "FIRST NAME" + "&udf2=" + "meliyas89@gmail.com" + "&udf3=" + 9894763290 + "&udf4=" + "madurai" + "&udf5=" + "iob" + "&udf6=" + "EMI OPTION IF REQUIRED";

    byte[] byteArray = Encoding.UTF8.GetBytes(postData);

    request.ContentType = "application/x-www-form-urlencoded";

    request.ContentLength = byteArray.Length;
    request.AllowAutoRedirect = true;

    request.Proxy.Credentials = CredentialCache.DefaultCredentials;

    Stream dataStream = request.GetRequestStream();

    dataStream.Write(byteArray, 0, byteArray.Length);

    dataStream.Close();


    WebResponse response = request.GetResponse();



   
    XmlDocument objXML = new XmlDocument();

    dataStream = response.GetResponseStream();

    objXML.Load(dataStream);

    string TxnId = objXML.DocumentElement.ChildNodes[0].ChildNodes[0].ChildNodes[2].InnerText;

    string Token = objXML.DocumentElement.ChildNodes[0].ChildNodes[0].ChildNodes[3].InnerText;
    string txnData = "ttype=NBFundTransfer&txnStage=1&tempTxnId=" + TxnId + "&token=" + Token;

    dataStream.Close();
    response.Close();
    Response.Redirect("http://" + ATOMPaymentIP + "/paynetz/epi/fts?" + txnData);
}
catch (Exception ex)
{
   throw ex;
}
    }
}