Socket (also called Socket) was originally a network communication interface developed on Unix system.

Later, Microsoft and other companies transplanted it to windows. Of course, the original unix system was still easy to use.

Socket can be understood as:

It is a function library, which contains a large number of functions and corresponding data structures, and has been implemented.

It supports network communication.

Programmers can read related function files and learn how to use functions and network programming.

Two forms of socket: streaming socket, corresponding to TCP protocol.

Datagram socket, corresponding to UDP protocol.