无法重新呼叫 BeginGetRequestStream/BeginGetResponse，而之前的呼叫仍在进行中

Question

我在任务工厂内部调用 httpwebresponse，执行 1 次后抛出异常
Cannot re-call BeginGetRequestStream/BeginGetResponse while a previous call is still in progress
我的代码如下：

for (int i = 0; i < tsk.Length; i++) 
{ 
   tsk[i] = Task.Factory.StartNew((object obj) => 
   { 
        System.Diagnostics.Stopwatch watch = Stopwatch.StartNew();
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        watch.Stop(); 
   }, i);
}

如何解决这个问题

Answer 1

您一次又一次地使用同一个 HttpRequest 对象：

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

你每次都必须重新创建它，因为单独的线程试图同时重新使用 HTTP 连接并得到异常：

HttpWebRequest request = WebRequest.Create("url");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

无法重新呼叫 BeginGetRequestStream/BeginGetResponse，而之前的呼叫仍在进行中

Cannot re-call BeginGetRequestStream/BeginGetResponse while a previous call is still in progress

c#

multithreading

httpwebrequest