This method constructs a socket targeted to the TCP server on the localhost at a host number known both to the client and server through URIConstants.
此方法将通过URIConstants在客户机和服务器已知的主机编号上构造一个套接字,该套接字以本地主机上的TCP服务器为目标。
Subnet mask is mainly used to define the network number, host number of IP address and divide one heavy IP network into several subnets.
子网掩码主要用于确定IP地址中的网络号和主机号以及将一个大的IP网络划分为若干个小的子网络。
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