c# - 使用 C# 在应用程序购买收据中验证 iOS

Question

我正在使用 C# 网络服务在我的服务器上验证我的 ios in app purchase 收据

我通过在 Xcode 中执行以下操作获得了字符串形式的收据:

- (void) completeTransaction: (SKPaymentTransaction *)transaction
{
    NSString* receiptString = [[NSString alloc] initWithString:transaction.payment.productIdentifier];

    NSLog(@"%@",receiptString);

    NSURL *receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];

    NSData *receipt = [NSData dataWithContentsOfURL:receiptURL];

    NSString *jsonObjectString = [receipt base64EncodedStringWithOptions:0];

}

我将该字符串(收据)作为参数发送到我的 C# Web 服务。 这是我的网络服务方法:

[WebMethod(Description = "Purchase Item Verify")]
public string PurchaseItem(string receiptData)
 {
    string returnmessage = "";

    try
    {
        var json = "{ 'receipt-data': '" + receiptData + "'}";

        ASCIIEncoding ascii = new ASCIIEncoding();
        byte[] postBytes = Encoding.UTF8.GetBytes(json);

        HttpWebRequest request;
        request = WebRequest.Create("https://sandbox.itunes.apple.com/verifyReceipt") as HttpWebRequest;
        request.Method = "POST";
        request.ContentType = "application/json";
        request.ContentLength = postBytes.Length;

        Stream postStream = request.GetRequestStream();
        postStream.Write(postBytes, 0, postBytes.Length);
        postStream.Close();

        var sendresponse = (HttpWebResponse)request.GetResponse();

        string sendresponsetext = "";
        using (var streamReader = new StreamReader(sendresponse.GetResponseStream()))
        {
            sendresponsetext = streamReader.ReadToEnd();
        }
        returnmessage = sendresponsetext;

    }
    catch (Exception ex)
    {
        ex.Message.ToString();
    }
    return returnmessage;
}

它总是返回 {"status":21002}。 我一直在寻找两天，但仍然找不到解决方案。有人可以帮助我，我错了什么？

**我正在沙盒上进行测试，这就是我使用沙盒 URL 的原因。我可以在我的应用程序中验证交易收据。

Answer 1

我有解决方案

对我有用的最终代码是:

 public string PurchaseItem(string receiptData)
{
    string returnmessage = "";
    try
    {
       // var json = "{ 'receipt-data': '" + receiptData + "'}";

        var json = new JObject(new JProperty("receipt-data", receiptData)).ToString();

        ASCIIEncoding ascii = new ASCIIEncoding();
        byte[] postBytes = Encoding.UTF8.GetBytes(json);

      //  HttpWebRequest request;
        var request = System.Net.HttpWebRequest.Create("https://sandbox.itunes.apple.com/verifyReceipt");
        request.Method = "POST";
        request.ContentType = "application/json";
        request.ContentLength = postBytes.Length;

        //Stream postStream = request.GetRequestStream();
        //postStream.Write(postBytes, 0, postBytes.Length);
        //postStream.Close();

        using (var stream = request.GetRequestStream())
        {
            stream.Write(postBytes, 0, postBytes.Length);
            stream.Flush();
        }

      //  var sendresponse = (HttpWebResponse)request.GetResponse();

        var sendresponse = request.GetResponse();

        string sendresponsetext = "";
        using (var streamReader = new StreamReader(sendresponse.GetResponseStream()))
        {
            sendresponsetext = streamReader.ReadToEnd().Trim();
        }
        returnmessage = sendresponsetext;

    }
    catch (Exception ex)
    {
        ex.Message.ToString();
    }
    return returnmessage;

花了两天半的时间，只是为了换一个方法。感谢上帝。