Socket是TCP/IP协议上的一种通信，在通信的两端各建立一个Socket，从而在通信的两端之间形成网络虚拟链路。一旦建立了虚拟的网络链路，两端的程序就可以通过虚拟链路进行通信。

-Socket is a communication on the TCP/IP protocol in the communication of each end of the establishment of a Socket, virtual link between the two ends of the communication network. Once you ve created a virtual network link, both ends of the program can communicate through a virtual link.