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windows socket API的基本应用 完整工程；服务器异步监听模式 适合初学参考。(The basic application windows socket API complete works server asynchronous listening mode suitable for beginners reference.)

通用的设置路由器局域网端口映射类源码，仅供参考(Set up the router LAN port mapping class source code, for reference only)

说明：  VC++编程实现网络嗅探器 简单 但是完整可运行。比较基础(VC++ programming for network sniffer)

关于网络编程的好书，可以下载看看，讲得非常详细(Books on network programming, you can download to see, speak in great detail)

通信工程师电信网络专业习题集 通信工程师电信网络专业习题集 通信工程师电信网络专业习题集(CommunicationEngineerNetWorkPractise CommunicationEngineerNetWorkPractise CommunicationEngineerNetWorkPractise)

A practical example of moving a form without title bar is simple, effective and worthy of reference.

简易TCP通讯服务器端，QosClt为客户端。多个客户端间的通讯需要基于服务器，即通过服务器转发。(Simple TCP communication server, QosClt for the client. Communication between multiple clients need a server-based, that is transmitted through the server.)

用socket编程实现点对点通信，TCP客户端程序，TCP服务器程序，以及UDP点对点聊天通信。(Point to point communication, TCP client, TCP server, and UDP peer chat communication socket programming.)

一个基于MFC的网络通信SOCKET程序，实现了接收SOCKET数据的同时，发送SOCKET数据。(An MFC-based network communication SOCKET procedure to achieve the same time to receive SOCKET data, send SOCKET data.)

可以参考直接使用S7协议连接西门子plc(You can refer to the direct use of the S7 protocol to connect SIEMENS PLC)