Paypal IPN 400 和 403 错误

如何解决Paypal IPN 400 和 403 错误

Stackoverflow 的各位，大家好，我一直在尝试为我的贝宝支付实现 IPN 功能。我在 localhost 上工作，所以 IPN 不起作用。开始使用 ngrok，现在 IPN 部分正在部分工作。

private class IPNContext
    {
        public HttpRequestBase IPNRequest { get; set; }

        public string RequestBody { get; set; }

        public string Verification { get; set; } 
    }

    [Route("paypalipn")]
    [HttpPost]
    public ActionResult Receive()
    {
        ServicePointManager.Expect100Continue = true;
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
        IPNContext ipnContext = new IPNContext()
        {
            IPNRequest = Request
        };

        using (StreamReader reader = new StreamReader(ipnContext.IPNRequest.InputStream,Encoding.ASCII))
        {
            ipnContext.RequestBody = reader.ReadToEnd();
        }

        //Store the IPN received from 

        LogRequest(ipnContext);

        //Fire and forget verification task
        Task.Run(() => VerifyTask(ipnContext));

        //Reply back a 200 code
        return new HttpStatusCodeResult(HttpStatusCode.OK);
    }

    private void VerifyTask(IPNContext ipnContext)
    {
        try
        {
            var verificationRequest = (HttpWebRequest)WebRequest.Create("https://ipnpb.sandbox.paypal.com/cgi-bin/webscr");

            //Set values for the verification request
            verificationRequest.Method = "POST";
            verificationRequest.ContentType = "application/x-www-form-urlencoded";

            //Add cmd=_notify-validate to the payload
            string strRequest = "cmd=_notify-validate&" + ipnContext.RequestBody;
            verificationRequest.ContentLength = strRequest.Length;

            //verificationRequest.UserAgent = "ASP-IPN-VerificationScript";
            //verificationRequest.KeepAlive = false;

            //Attach payload to the verification request
            using (StreamWriter writer = new StreamWriter(verificationRequest.GetRequestStream(),Encoding.ASCII))
            {
                writer.Write(strRequest);
            }

            //Send the request to PayPal and get the response
            using (StreamReader reader = new StreamReader(verificationRequest.GetResponse().GetResponseStream()))
            {
                ipnContext.Verification = reader.ReadToEnd();
            }
        }
        catch (Exception exception)
        {
            LogErr(exception.ToString());

            //Capture exception for manual investigation
        }

        ProcessVerificationResponse(ipnContext);
    }

上面的代码在 VerifyTask 函数中抛出 403-Forbidden 异常。在 Paypal IPN 文档中，它声明并且我引用了 Please ensure you provide a User-Agent header value that describes your IPN listener,such as,PHP-IPN-VerificationScript.

如果我用 verificationRequest.UserAgent = "ASP-IPN-VerificationScript"; 取消注释行，那么我开始收到 400-Bad Request。以前有人遇到过这个问题吗？我将非常感谢任何帮助，感谢您阅读到目前为止。

对于 403-禁止：

POST https://ipnpb.sandbox.paypal.com/cgi-bin/webscr HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Host: ipnpb.sandbox.paypal.com
Content-Length: 1245

cmd=_notify-validate&mc_gross=10.00&invoice=4967920&protection_eligibility=Eligible&address_status=confirmed&item_number1=sku&payer_id=UG9FLUCH489QQ&tax=0.00&address_street=asfasdgdsgsd&payment_date=00%3A36%3A22+Jun+28%2C+2021+PDT&payment_status=Completed&charset=KOI8_R&address_zip=365555&mc_shipping=0.00&first_name=%E1%CC%C5%CB%D3%C1%CE%C4%D2&mc_fee=10.00&address_country_code=RU&address_name=%E4%CF%D3%D4%CF%C5%D7%D3%CB%C9%CA+%E1%CC%C5%CB%D3%C1%CE%C4%D2&notify_version=3.9&custom=latios%3A1000001&payer_status=verified&business=sb-fyb3f6626939%40business.example.com&address_country=Russia&num_cart_items=1&address_city=sggdsgdsgsdgf&verify_sign=As7YjUf-EtwWTklniO1RIaVMU-GLAbAN64Awhlx16OwPRDGAMxNV1f-B&payer_email=sb-mjmkt6611016%40personal.example.com&txn_id=4RF57039YW521103B&payment_type=instant&last_name=%E4%CF%D3%D4%CF%C5%D7%D3%CB%C9%CA&address_state=fhdhfdhfdh&item_name1=TestPayment&receiver_email=sb-fyb3f6626939%40business.example.com&payment_fee=&shipping_discount=0.00&quantity1=1&insurance_amount=0.00&receiver_id=7W727DS9L36YE&txn_type=cart&discount=0.00&mc_gross_1=10.00&mc_currency=RUB&residence_country=RU&test_ipn=1&shipping_method=Default&transaction_subject=Test+Payment&payment_gross=&ipn_track_id=4d1fa1b02fc27

我收到：

HTTP/1.1 403 Forbidden
Connection: close
Content-Length: 419
Server: Varnish
Retry-After: 0
Content-Type: text/html
Accept-Ranges: bytes
Via: 1.1 varnish,1.1 varnish
Date: Mon,28 Jun 2021 07:36:31 GMT
Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
X-Served-By: cache-hhn11549-HHN,cache-ams21035-AMS
X-Cache: MISS,MISS
X-Cache-Hits: 0,0
X-Timer: S1624865791.439206,VS0,VE12
Set-Cookie: x-cdn=fastly:AMS; Domain=paypal.com; Path=/; Secure


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Paypal Error</title>
</head>
<body>
<h1>Access Denied.</h1>
<p>You don't have permission to access "/cgi-bin/webscr" on this server.
<br/>
<p>Reference #16248657919b384e2feca947c115f57
<br/>
<p> Timestamp: 1624865791
</body>
</html>

对于 400 错误请求错误：

POST https://ipnpb.sandbox.paypal.com/cgi-bin/webscr HTTP/1.1
Content-Type: application/x-www-form-urlencoded
User-Agent: ASP-IPN-VerificationScript
Host: ipnpb.sandbox.paypal.com
Content-Length: 1245

cmd=_notify-validate&mc_gross=10.00&invoice=6419605&protection_eligibility=Eligible&address_status=confirmed&item_number1=sku&payer_id=UG9FLUCH489QQ&tax=0.00&address_street=asfasdgdsgsd&payment_date=00%3A31%3A25+Jun+28%2C+2021+PDT&payment_status=Completed&charset=KOI8_R&address_zip=365555&mc_shipping=0.00&first_name=%E1%CC%C5%CB%D3%C1%CE%C4%D2&mc_fee=10.00&address_country_code=RU&address_name=%E4%CF%D3%D4%CF%C5%D7%D3%CB%C9%CA+%E1%CC%C5%CB%D3%C1%CE%C4%D2&notify_version=3.9&custom=latios%3A1000001&payer_status=verified&business=sb-fyb3f6626939%40business.example.com&address_country=Russia&num_cart_items=1&address_city=sggdsgdsgsdgf&verify_sign=AX8Qhp1KduwF1PenaWfGM32xmlvMAhGJ2G8kcZxf1Y2LyqJwTyF9J-zn&payer_email=sb-mjmkt6611016%40personal.example.com&txn_id=4H0466721N516441A&payment_type=instant&last_name=%E4%CF%D3%D4%CF%C5%D7%D3%CB%C9%CA&address_state=fhdhfdhfdh&item_name1=TestPayment&receiver_email=sb-fyb3f6626939%40business.example.com&payment_fee=&shipping_discount=0.00&quantity1=1&insurance_amount=0.00&receiver_id=7W727DS9L36YE&txn_type=cart&discount=0.00&mc_gross_1=10.00&mc_currency=RUB&residence_country=RU&test_ipn=1&shipping_method=Default&transaction_subject=Test+Payment&payment_gross=&ipn_track_id=38f99419954c7

我收到：

HTTP/1.1 400 Bad Request
Connection: close
Content-Length: 226
Content-Type: text/html; charset=iso-8859-1
Cache-Control: max-age=0,no-cache,no-store,must-revalidate
Paypal-Debug-Id: 1dc58fdccb02b
Set-Cookie: Cookie 1
Set-Cookie: Cookie 2
Accept-Ranges: bytes
Via: 1.1 varnish,28 Jun 2021 07:31:39 GMT
Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
X-Served-By: cache-hhn11528-HHN,cache-ams21054-AMS
X-Cache: MISS,0
X-Timer: S1624865500.675648,VE150
Set-Cookie: x-cdn=fastly:AMS; Domain=paypal.com; Path=/; Secure

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
</p>
</body></html>

针对将来会发现此主题的人的解决方案：

我的问题是，我的两个测试帐户都有西里尔文名称。为了解决这个问题，我需要登录我的企业帐户（将接受付款的帐户）

帐户设置
网站付款
PayPal 付款按钮的语言编码
附加功能
将编码更改为“UTF-8”。

现在它可以正常工作了。

Paypal IPN 400 和 403 错误

如何解决Paypal IPN 400 和 403 错误

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