Socket（套接字）最初是由加利福尼亚大学Berkeley（伯克利）分校为UNIX操作系统开发的网络通信接口，随着UNIX的广泛使用，Socket成为当前最流行的网络通信应用程序接口之一-Socket (socket) was originally developed by the University of California Berkeley (Berkeley) campus for the UNIX operating system, development of network communication interface, with the widespread use of UNIX, Socket become the most popular application programming interface of network communication