Question

我收到此错误，在api-3t.sandbox.paypal.com中调用SetExpressCheckout时，从传输流中收到意外的EOF或0个字节。我使用Asp.net来呼叫api。

这是我的代码：

private static NameValueCollection Submit(string values)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(
       String.Format("https://{0}/nvp", PayPalSettings.ApiDomain));

    request.Method = "POST";
    request.ContentLength = values.Length;

    using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
    {
        writer.Write(values);
    }

    WebResponse webResponse = request.GetResponse();
    Stream response = webResponse.GetResponseStream();
    using (StreamReader reader = new StreamReader(response))
    {
        return HttpUtility.ParseQueryString(reader.ReadToEnd());
    }
}

当我调用request.GetRequestStream（）时会发生错误。

值参数包含： USER =＆LT;用户名＆gt;＆amp; PWD =＆lt;密码＆gt;＆amp; METHOD = SetExpressCheckout＆amp; VERSION = 76.0＆amp; HDRIMG =＆lt; image url＆gt;＆amp; RETURNURL =＆lt; return url＆gt;＆amp; CANCELURL =＆lt;取消URL＆GT;＆安培; BUTTONSOURCE = PP-ECWizard＆安培; SUBJECT =安培; ALLOWNOTE = 0＆安培; PAYMENTREQUEST_0_PAYMENTACTION =塞尔＆安培; PAYMENTREQUEST_0_AMT = 100安培; PAYMENTREQUEST_0_CURRENCYCODE = AUD＆安培; NOSHIPPING = 1＆安培; L_PAYMENTREQUEST_0_NAME0 =注册＆安培; L_PAYMENTREQUEST_0_DESC0 =注册+详细资料和L_PAYMENTREQUEST_0_QTY0 = 1＆安培; L_PAYMENTREQUEST_0_AMT0 = 100

PayPalSettings.ApiDomain = api-3t.sandbox.paypal.com

奇怪的是，如果我使用上面相同的代码并调用live / production paypal api它会起作用。当然使用实时/生产网址和凭据。

此外，如果我发布上述网址（ https://api-3t.sandbox.paypal.com/nvp?USER=＆lt; username＆gt;＆amp; PWD =＆lt; password＆gt;＆amp; METHOD = SetExpressCheckout＆amp; VERSION = 76.0＆amp; HDRIMG =＆lt; image URL＆GT;＆安培; RETURNURL = LT;返回URL＆GT;＆安培; CANCELURL = LT;取消URL＆GT;＆安培; BUTTONSOURCE = PP-ECWizard＆安培; SUBJECT =安培; ALLOWNOTE = 0＆安培; PAYMENTREQUEST_0_PAYMENTACTION =塞尔＆安培; PAYMENTREQUEST_0_AMT = 100安培; PAYMENTREQUEST_0_CURRENCYCODE = AUD＆安培; NOSHIPPING = 1＆amp; L_PAYMENTREQUEST_0_NAME0 =注册＆amp; L_PAYMENTREQUEST_0_DESC0 =注册+详细信息＆amp; L_PAYMENTREQUEST_0_QTY0 = 1＆amp; L_PAYMENTREQUEST_0_AMT0 = 100 ）在浏览器中它将返回所需的结果。

非常感谢您的帮助。

谢谢。

Answer 1

经过一些研究，我发现了。显然，几个月前paypal更改了支持的TLS版本，使版本1.2成为支持的最低版本。

问题是.Net Framework 3.5不支持该版本。对于高于3.5的框架，您可以添加下一行：

ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

由于这个问题几乎是在一年前，我不认为微软会对fw 3.5进行更新，所以我建议将你的应用程序迁移到4.5。

Paypal错误在Asp.net中从传输流中收到意外的EOF或0字节

1 个答案: