当先前的调用仍在进行时，无法重新调用 BeginGetRequestStream/BeginGetResponse

Question

我在任务工厂内调用 httpwebresponse ，在执行 1 次后它会抛出异常
Cannot re-call BeginGetRequestStream/BeginGetResponse while a previous call is still in progress
我的代码如下所示：

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);
}

如何解决此问题

Answer 1

HttpRequest您一次又一次地使用同一个对象：

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

您必须每次重新创建它，因为单独的线程尝试同时重用HTTP连接并获取异常：

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