Databases
StackOverflow2013
Postsdbo
POPaypal IPN Listener not returning values
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPaypal IPN Listener not returning values
    text
    copied!<p>I am trying to create a IPN listener in C# MVC website. After looking online, I have managed to create the ActionResult below. </p> <p>The listener receives a "VERIFIED" response, but unfortunately it does not seems to be receiving any other information about the payment.</p> <pre><code> [HttpPost] public ActionResult IPN() { var log = new LogMessage(); log.LogMessageToFile("IPN recieved!"); var formVals = new Dictionary&lt;string, string&gt;(); formVals.Add("cmd", "_notify-validate"); string response = GetPayPalResponse(formVals, true); if (response == "VERIFIED") { log.LogMessageToFile("IPN VERIFIED!"); //validate the order string sAmountPaid = Request.QueryString["amt"]; string sPayment = ConfigurationManager.AppSettings["amount"].ToString(); Decimal amountPaid = 0; Decimal Payment = 0; Decimal.TryParse(sAmountPaid, out amountPaid); Decimal.TryParse(sPayment, out Payment); if (Payment &lt;= amountPaid) { log.LogMessageToFile("IPN Correct amount"); //process it try { string GUID = Request.QueryString["cm"]; string strGatewayResponse = Request.QueryString["tx"]; var data = new Datalayer(); data.AddPayment(GUID, amountPaid, strGatewayResponse, true); log.LogMessageToFile("IPN Commplete"); return Redirect("/Payment/Success"); } catch { log.LogMessageToFile("IPN Error"); return Redirect("/Payment/Error"); } } else { log.LogMessageToFile("IPN Incorrect amount!"); log.LogMessageToFile("IPN amount:" + Request.QueryString["payment_gross"]); log.LogMessageToFile("IPN GUID:" + Request.QueryString["custom"]); log.LogMessageToFile("IPN ID:" + Request.QueryString["txn_id"]); return Redirect("/Payment/Error"); } } log.LogMessageToFile("IPN not verified!"); return View("/Payment/Error"); } string GetPayPalResponse(Dictionary&lt;string, string&gt; formVals, bool useSandbox) { string paypalUrl = useSandbox ? "https://www.sandbox.paypal.com/cgi-bin/webscr" : "https://www.paypal.com/cgi-bin/webscr"; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(paypalUrl); // Set values for the request back req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; byte[] param = Request.BinaryRead(Request.ContentLength); string strRequest = Encoding.ASCII.GetString(param); StringBuilder sb = new StringBuilder(); sb.Append(strRequest); foreach (string key in formVals.Keys) { sb.AppendFormat("&amp;{0}={1}", key, formVals[key]); } strRequest += sb.ToString(); req.ContentLength = strRequest.Length; string response = ""; using (StreamWriter streamOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII)) { streamOut.Write(strRequest); streamOut.Close(); using (StreamReader streamIn = new StreamReader(req.GetResponse().GetResponseStream())) { response = streamIn.ReadToEnd(); } } return response; } </code></pre> <p>I am most likely missing something very simple.</p> <p>Any help would be amazing.</p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload