求助(十万火急):关于httpwebrequest发送请求绑定ip的问题.

先上代码.

            ServicePoint servicePoint =
                ServicePointManager.FindServicePoint(new Uri(url));
            servicePoint.BindIPEndPointDelegate = new BindIPEndPoint(Bind);

Bind是绑定ip的函数,当我在跳换ip的时候,发现同一个域名下,Bind只会在第一次执行,并测试了请求ip.