WebRequest.GetResponse 第三次就會顯示超時是為什麼？

[lertulo]

            try
            {
                for (int i = 0; i < 5; i++)
                {
                    WebRequest rq = WebRequest.Create("http://10.2.1.8/it/winrar.exe");
                    WebResponse rp = rq.GetResponse();
                }
            }
            catch (Exception Err)
            {
                String a = Err.Message;
                MessageBox.Show(Err.Message);
            }

[feiyun0112]

WebResponse 用完关掉

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[lertulo]

You have reached the connection limit on the client ( 2 conns per http/1.1 server, 4 connections per http/1.0 server, or custom limit set on the ServicePoint), and no connection is free to send a request to the server. In other words, you might have 2 requests outstanding (eg: to a 1.1 server) which are taking more than 2 minutes to complete, and then issue another GetResponse() to the same server. The last getresponse() might time out.

參考
http://blogs.msdn.com/feroze_daud/archive/2004/01/21/61400.aspx

看到了，呵呵，我以為每次會 重新實例化一個類，忘了考慮服務器了。