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System.Net.WebException: The remote name could not be resolved: '' at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context) at System.Net.HttpWebRequest.GetRequestStream()

I gets the above error when it fires the Credit card API on server while it works totally fine on local.

error comes at
// post data is sent as a stream
           StreamWriter myWriter  = null;
           myWriter = new StreamWriter(objRequest.GetRequestStream());

Full code is:

protected void Page_Load(object sender, EventArgs e)
            // By default, this sample code is designed to post to our test server for
            // developer accounts:
            // for real accounts (even in test mode), please make sure that you are
            // posting to:
            String post_url = "";

            Dictionary<string, string> post_values = new Dictionary<string, string>();
            //the API Login ID and Transaction Key must be replaced with valid values
            post_values.Add("x_login", "API_LOGIN_ID");
            post_values.Add("x_tran_key", "TRANSACTION_KEY");
            post_values.Add("x_delim_data", "TRUE");
            post_values.Add("x_delim_char", "|");
            post_values.Add("x_relay_response", "FALSE");

            post_values.Add("x_type", "AUTH_CAPTURE");
            post_values.Add("x_method", "CC");
            post_values.Add("x_card_num", "4111111111111111");
            post_values.Add("x_exp_date", "0115");

            post_values.Add("x_amount", "19.99");
            post_values.Add("x_description", "Sample Transaction");

            post_values.Add("x_first_name", "John");
            post_values.Add("x_last_name", "Doe");
            post_values.Add("x_address", "1234 Street");
            post_values.Add("x_state", "WA");
            post_values.Add("x_zip", "98004");
            // Additional fields can be added here as outlined in the AIM integration
            // guide at:

            // This section takes the input fields and converts them to the proper format
            // for an http post.  For example: "x_login=username&x_tran_key=a1B2c3D4"
            String post_string = "";

            foreach (KeyValuePair<string, string> post_value in post_values)
                post_string += post_value.Key + "=" + HttpUtility.UrlEncode(post_value.Value) + "&";
            post_string = post_string.TrimEnd('&');

            // The following section provides an example of how to add line item details to
            // the post string.  Because line items may consist of multiple values with the
            // same key/name, they cannot be simply added into the above array.
            // This section is commented out by default.
            string[] line_items = {
                "item1<|>golf balls<|><|>2<|>18.95<|>Y",
                "item2<|>golf bag<|>Wilson golf carry bag, red<|>1<|>39.99<|>Y",
                "item3<|>book<|>Golf for Dummies<|>1<|>21.99<|>Y"};
            foreach( string value in line_items )
                post_string += "&x_line_item=" + HttpUtility.UrlEncode(value);

            // create an HttpWebRequest object to communicate with
            HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(post_url);
            objRequest.Method = "POST";
            objRequest.ContentLength = post_string.Length;
            objRequest.ContentType = "application/x-www-form-urlencoded";

            // post data is sent as a stream
            StreamWriter myWriter  = null;
            myWriter = new StreamWriter(objRequest.GetRequestStream());

            // returned values are returned as a stream, then read into a string
            String post_response;
            HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
            using (StreamReader responseStream = new StreamReader(objResponse.GetResponseStream()) )
                post_response = responseStream.ReadToEnd();

            // the response string is broken into an array
            // The split character specified here must match the delimiting character specified above
            Array response_array = post_response.Split('|');

            // the results are output to the screen in the form of an html numbered list.
            resultSpan.InnerHtml += "<OL> \n";
            foreach (string value in response_array)
                resultSpan.InnerHtml += "<LI>" + value + "&nbsp;</LI> \n";
            resultSpan.InnerHtml += "</OL> \n";
            // individual elements of the array could be accessed to read certain response
            // fields.  For example, response_array[0] would return the Response Code,
            // response_array[2] would return the Response Reason Code.
            // for a list of response fields, please review the AIM Implementation Guide
Updated 17-Nov-11 5:42am
BobJanova 8-Nov-11 10:48am looks like a placeholder that you need to replace with your actual authorisation server. When I try a ping to it, it has a registered IP but I get a 'destination net unreachable' on half the packets and timeout on the others.

1 solution

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Solution 1

I had the same problem.Are you deploying the site on SSL ?

The APIs communicate via a specific port ( you need to find this out) and the ports on the server are blocked by default.

Once you find out the port, you can ask your system administrator to open this port for you.

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