c# - Paypal 整合时出错

我试图将paypal sandbox与我的项目集成到asp.net中。

重定向到贝宝沙箱工作非常好！您可以检查您的购物车！您可以付款！但是问题是当贝宝设置重定向到我的Success.aspx页面时！

我得到了错误

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.0.101:808

我正在使用流编写器对象！

等待让我发布我的代码！

这甚至是Success.aspx的page_load

   protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                // Used parts from https://www.paypaltech.com/PDTGen/
                // Visit above URL to auto-generate PDT script

                authToken = WebConfigurationManager.AppSettings["PDTToken"];

                //read in txn token from querystring
                txToken = Request.QueryString.Get("tx");


                query = string.Format("cmd=_notify-synch&tx={0}&at={1}", txToken, authToken);

                // Create the request back
                string url = WebConfigurationManager.AppSettings["PayPalSubmitUrl"];
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);

                // Set values for the request back
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded";
                req.ContentLength = query.Length;

                // Write the request back IPN strings
                StreamWriter stOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII);
                stOut.Write(query);
                stOut.Close();

                // Do the request to PayPal and get the response
                StreamReader stIn = new StreamReader(req.GetResponse().GetResponseStream());
                strResponse = stIn.ReadToEnd();
                stIn.Close();

                // sanity check
                Label2.Text = strResponse;

                // If response was SUCCESS, parse response string and output details
                if (strResponse.StartsWith("SUCCESS"))
                {
                    PDTHolder pdt = PDTHolder.Parse(strResponse);
                    Label1.Text = string.Format("Thank you {0} {1} [{2}] for your payment of {3} {4}!",
                        pdt.PayerFirstName, pdt.PayerLastName, pdt.PayerEmail, pdt.GrossTotal, pdt.Currency);
                }
                else
                {
                    Label1.Text = "Oooops, something went wrong...";
                }
            }
        }

这句话造错了！

StreamWriter stOut = new StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII);

这些类型的异常发生

    Exception Details: System.Net.Sockets.SocketException:
 A connection attempt failed because the connected party did
 not properly respond after a period of time,
or established connection failed because connected
 host has failed to respond 192.168.0.101:808

最佳答案

首先，请勿将PDT和IPN混合使用-只需使用IPN。进入Pay​​Pal管理员，并确保未在其中设置返回URL，并且未启用PDT。

在线上有一个IPN类可用于此目的-更多信息（注意：我自己的博客文章）：

http://codersbarn.com/?tag=/paypal

http://paypalipnclass.codeplex.com/releases/view/31282

关于c# - Paypal 整合时出错，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8974738/