说明：  在网络编程中,有时候会需要重新拨号建立网络连接(如Ad点击软件通过重新拨号形成有效点击) ,下面介绍两种程序中拨号的方法.
(In network programming, sometimes we will need to re-dial-up networking connection (such as the Ad click on the software by re-dial to form effective views), two procedures described below in the dial-up method.)