我已经在ASP.NET MVC5项目中创建并本地测试了三种不同的IPN Listner方法，这些方法在使用测试html时都在本地工作。从服务器进行日志记录表明IPN测试始终命中控制器的IPN操作时，字节数组始终为空。
结果是INVALID，因为发送出来的所有内容都是附加的命令。该网站托管在GoDaddy上。 PayPal IPN日志不会跟踪来自IPN工具的IPN响应，因此我必须继续从MVC项目进行服务器日志记录。
所有内容都是根据示例代码改编的：
控制器：
[AllowAnonymous]
public EmptyResult PayPalPaymentNotification(PayPalCheckoutInfo payPalCheckoutInfo)
{
PayPalListenerModel model = new PayPalListenerModel();
model._PayPalCheckoutInfo = payPalCheckoutInfo;
_logger.Info("payPalCheckoutInfo {0}", payPalCheckoutInfo);
byte[] parameters = Request.BinaryRead(HttpContext.Request.ContentLength);
_logger.Info("PayPal/PayPalPaymentNotification Line 47 Request.ContentLength {0}", Request.ContentLength);
if (parameters != null)
{
model.GetStatus(parameters);
}
return new EmptyResult();
}
PayPalCheckoutInfo.cs
public class PayPalCheckoutInfo
{
//ipnguide.pdf - page 43
#region "Transaction and Notification-Related Variables"
/// use this to verify its not spoofed, this is our info
public string receiver_email { get; set; } //127
public string receiver_id { get; set; } //13
/// Keep this ID to avoid processing the transaction twice
/// The merchant’s original transaction identification number for the payment from the buyer, against which the case was registered.
public string txn_id { get; set; }
/// The kind of transaction for which the IPN message was sent.
public string txn_type { get; set; }
/// Encrypted string used to validate the authenticity of the transaction
public string verify_sign { get; set; }
#endregion
#region "Buyer Information Variables"
public string address_country { get; set; } //64
public string address_city { get; set; } //40
public string address_country_code { get; set; } //2
public string address_name { get; set; } //128 - prob don't need
public string address_state { get; set; } //40
public string address_status { get; set; } //confirmed/unconfirmed
public string address_street { get; set; } //200
public string address_zip { get; set; } //20
public string contact_phone { get; set; } //20
public string first_name { get; set; } //64
public string last_name { get; set; } //64
public string payer_email { get; set; } //127
public string payer_id { get; set; } //13
public int? Zip
{
get
{
int temp;
if (int.TryParse(address_zip, out temp))
{
return temp;
}
else
{
return null;
}
}
}
#endregion
#region "Payment Information Variables"
/*
public string auth_amount { get; set; }
public string auth_exp { get; set; } //28
public string auth_id { get; set; } //19
public string auth_status { get; set; }
*/
/// Token passed back from PayPal for cross ref
public string token { get; set; }
//public string checkoutstatus { get; set; }
public string PayerID { get; set; }
/// Passthrough variable you can use to identify your Invoice Number for this purchase. If omitted, no variable is passed back.
public string invoice { get; set; } //127
/// Item name as passed by you, the merchant. Or, if not passed by you, as
/// entered by your customer. If this is a shopping cart transaction, PayPal
/// will append the number of the item (e.g., item_name1, item_name2,
/// and so forth).
public string item_name1 { get; set; } //127
public string item_number1 { get; set; } //127
public string mc_currency { get; set; } //currency of the payment.
public string mc_fee { get; set; } //Transaction fee associated with the payment
public string mc_gross { get; set; } //Full amount of the customer's payment
/// Whether the customer has a verified PayPal account.
/// verified – Customer has a verified PayPal account
/// unverified – Customer has an unverified PayPal account.
public string payer_status { get; set; }
/// HH:MM:SS Mmm DD, YYYY PDT (28chars)
public string payment_date { get; set; }
public DateTime TrxnDate
{
get
{
DateTime dt = DateTime.Now;
if (DateTime.TryParse(payment_date, out dt))
{
return dt;
}
else
{
return DateTime.Now;
}
}
}
/// The status of the payment:
/// Canceled_Reversal: A reversal has been canceled. For example, you
/// won a dispute with the customer, and the funds for the transaction that was
/// reversed have been returned to you.
/// Completed: The payment has been completed, and the funds have been added successfully to your account balance
///Created: A German ELV payment is made using Express Checkout. Denied: You denied the payment. This happens only if the payment was
/// previously pending because of possible reasons described for the pending_reason variable or the Fraud_Management_Filters_x variable.
/// Expired: This authorization has expired and cannot be captured.
///Failed: The payment has failed. This happens only if the payment was made from your customer’s bank account.
///Pending: The payment is pending. See pending_reason for more information.
///Refunded: You refunded the payment.
///Reversed: A payment was reversed due to a chargeback or other type of reversal. The funds have been removed from your account balance and
///returned to the buyer. The reason for the reversal is specified in the ReasonCode element.
///Processed: A payment has been accepted.
///Voided: This authorization has been voided.
public string payment_status { get; set; }
/// echeck: This payment was funded with an eCheck.
/// instant: This payment was funded with PayPal balance, credit card, or Instant Transfer.
public string payment_type { get; set; }
/// This variable is set only if payment_status = Pending. - too many reasons (look it up in pdf)
public string pending_reason { get; set; }
public string protection_eligibility { get; set; }
public string quantity { get; set; }
public string reason_code { get; set; }
public string correlationID { get; set; }
public string ack { get; set; }
public string errmsg { get; set; }
public int? errcode { get; set; }
/// should hold the clientid passed in from setexpresscheckout
public string custom { get; set; }
public decimal Total
{
get
{
decimal amount = 0;
if (decimal.TryParse(mc_gross, out amount))
{
return amount;
}
else
{
return 0;
}
}
}
public decimal Fee
{
get
{
decimal amount = 0;
if (decimal.TryParse(mc_fee, out amount))
{
return amount;
}
else
{
return 0;
}
}
}
#endregion
}
}
PayPalListenerModel：
public class PayPalListenerModel //: BaseModel
{
private static Logger _logger = LogManager.GetCurrentClassLogger();
public PayPalCheckoutInfo _PayPalCheckoutInfo { get; set; }
public void GetStatus(byte[] parameters)
{
//verify the transaction
string status = Verify(true, parameters);
if (status == "VERIFIED")
{
_logger.Info("PayPalListenerModel Line 24 - Verified");
//check that the payment_status is Completed
if (_PayPalCheckoutInfo.payment_status.ToLower() == "completed")
{
//check that txn_id has not been previously processed to prevent duplicates
//check that receiver_email is your Primary PayPal email
//check that payment_amount/payment_currency are correct
//process payment/refund/etc
}
else
{
_logger.Info("PayPalListenerModel Line 40 - Payment Status Not == completed {0}", _PayPalCheckoutInfo.payment_status);
}
}
else if (status == "INVALID")
{
_logger.Info("PayPalListenerModel Line 46 - Status == INVALID");
//log for manual investigation
}
else
{
_logger.Info("PayPalListenerModel Line 51 from line 24 Not == VALID or INVALID");
//log response/ipn data for manual investigation
}
}
private string Verify(bool isSandbox, byte[] parameters)
{
string response = "";
try
{
string url = isSandbox ?
"https://www.sandbox.paypal.com/cgi-bin/webscr" : "https://www.paypal.com/cgi-bin/webscr";
_logger.Info("Verify Method - Line 71 Url {0}", url);
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
//must keep the original intact and pass back to PayPal with a _notify-validate command
string data = Encoding.ASCII.GetString(parameters);
data += "&cmd=_notify-validate";
webRequest.ContentLength = data.Length;
//Send the request to PayPal and get the response
using (StreamWriter streamOut = new StreamWriter(webRequest.GetRequestStream(), System.Text.Encoding.ASCII))
{
streamOut.Write(data);
_logger.Info("Validate Method Line 87 Streamout to PayPAl {0} ", data);
streamOut.Close();
}
using (StreamReader streamIn = new StreamReader(webRequest.GetResponse().GetResponseStream()))
{
response = streamIn.ReadToEnd();
streamIn.Close();
_logger.Info("Validate Method Line 95 Stream IN from PayPal ", response);
}
}
catch { }
return response;
}
}
}
-GoDaddy服务器日志：
-2015-02-13 09:06:28 W3SVC1322 P3NWVPWEB016 192.186.207.164 GET ---/PayPal/PayPalNotification token=EC-0BX962673U222251L&PayerID=ARX4U24K27RUU 443 -- 73.50.103.48 HTTP/1.1 Mozilla/5.0+Windows+NT+6.1;+WOW64)+AppleWebKit/537.36+-- (KHTML,+like+Gecko)+Chrome/41.0.2272.53+Safari/537.36 - SP.NET_SessionId=bit34j4u4ussju21te4it1wk;+token=6daf747f-598e-4151-9fae- 07486a4939ba;+__RequestVerificationToken=xX7uLN0VIn5XsM6Ri9uSw9_THe1hxyYna53HMnu IqkS9inMujdX004A-sJcQTVCs8mqGnqrqcefHaFVzk4ITiKDGcoNWuukvFvl88zDtj0c1 - niaspringconference.com 404 0 0 2193 683 93
NLog应用程序日志：
RegistrationGroups Conteroller Save Changes RegistrationGroupId 15
payPalCheckoutInfo NIAC.PayPalCheckoutInfo
PayPal/PayPalPaymentNotification Line 47 Request.ContentLength 0
Verify Method - Line 71 Url https://www.sandbox.paypal.com/cgi-bin/webscr
Validate Method Line 87 Streamout to PayPAl &cmd=_notify-validate
Validate Method Line 95 Stream IN from PayPal
PayPalListenerModel Line 46 - Status == INVALID