Question

我需要将一段文本发送到HTTP服务器。我需要知道成功发送的确定数量，而不是发送到强制网络门户网站或其他类似网站。由于HTTP服务器存在一些限制，我最好的确定是确保返回的HTTP状态代码为200.

如何从服务器返回HTTP状态代码？

这是我目前的代码：

        WebClient client = new WebClient();
        client.Headers["Content-Type"] = "text/xml";
        client.Encoding = Encoding.UTF8;
        bool? result=null;
        try
        {
            client.UploadStringAsync(server, "POST", data);
            client.UploadStringCompleted += (s, e) =>
                {
                    result=e.Error == null;
                };
        }
        catch { }

当服务器返回400-500错误代码时，将设置当前e.Error，但如果服务器返回300系列HTTP状态代码，则不会设置{{1}}。

Answer 1

我没有机会测试这段代码，但是，它可能会给你一两个想法：

 string data;

        var request = HttpWebRequest.Create("http://yourserver") as HttpWebRequest;
        request.Accept = "text/xml";
        request.Headers.Add("Accept-Charset", "utf-8");

        try
        {
            var response = await Task.Factory.FromAsync<WebResponse>(request.BeginGetResponse, request.EndGetResponse, null);

            // do something with your data, e.g. read it, deserialize it
            using (var responseStream = response.GetResponseStream())
            {
                using (var reader = new StreamReader(responseStream))
                {
                    data = reader.ReadToEnd();
                }
                // ....
            }

            var somethingInteresting = response as HttpWebResponse;
            Debug.WriteLine("Status is {0}", somethingInteresting.StatusCode);
        }
        catch (WebException ex)
        {
            var errorResponse = ex.Response as HttpWebResponse;
            var errorHttpStatusCode = errorResponse.StatusCode;

            Debug.WriteLine("Here's your error Http status: {0}", ex.Status);
        }

如何获取WinPhone WebClient返回的HTTP状态代码？

1 个答案: