where: [IPAddress] is the IP address of the server which the sample application is running on, and [Port#] is the port number which the sample application is listening to.
其中：[IPAddress] 是运行示例应用程序的服务器的 IP 地址，[Port#] 是示例应用程序正在帧听的端口号。
An IPAddress object is used to represent a single IP address. This value is then used in various socket methods to represent the IP address.
一个IP地址对象用来表示一个单一的IP地址，其值同时也可以应用在许多不同的方法里面。
Mobile IP is now the standard for supporting mobility in IP networks. It provides seamless mobility by hiding the change of IPaddress when a mobile host moves between IP subnets.
移动IP是支持IP网络移动性的标准，当移动主机(节点)在不同的ip子网之间移动时，它通过隐藏ip地址的变换提供移动时无缝的切换。
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