c# - 系统.Net.WebException : The underlying connection was closed: The connection was closed unexpectedly

Question

我正在编写一个 .NET 应用程序，它应该将数据发布到另一个 .NET 应用程序。 我使用下面的代码来请求登录页面

WebProxy proxy = new WebProxy("http://proxy:80/", true);
HttpWebRequest webRequest = WebRequest.Create(LOGIN_URL) as HttpWebRequest;
//proxy.Credentials = new NetworkCredential("myusername", "mypassword", "domain"); 
// webRequest.Proxy = proxy;
webRequest.Proxy = WebRequest.DefaultWebProxy;

StreamReader responseReader = new StreamReader
                                  (webRequest.GetResponse().GetResponseStream());
string responseData = responseReader.ReadToEnd();

但是在这一行失败了

StreamReader responseReader = new StreamReader
                                  (webRequest.GetResponse().GetResponseStream());

错误信息:

System.Net.WebException: The underlying connection was closed: The connection was 
                         closed unexpectedly.

Answer 1

就我而言，这解决了问题:

System.Net.ServicePointManager.Expect100Continue = false;

以上都不是。