IEEE 标准以太网802.3协议(2008)，描述物理层和数据链路层的工作协议。-IEEE standard 802.3 protocol(2008),introduces the PHY and MAC working protocol.

In this article w ill look at how to program using sockets by implementing an echo server along with a client that we will use to send and receive string messages. I will start off by giving a quick introduction to TCP/IP fundamentals and then ex