MQTT

A simple DNS auditing tool

说明：  tcp服务器的代码（网上找的），说有点的源代码。(Tcp program code in vxworks)

组播测试工具,可以接收和发送组播。可同时支持加入32个组播(multicast tools for ip.)

C# IPC 之 Socket 进程间通信(TCP方式) 源码

用Visual C++编写的UDP客户端程序。(Using Visual C++ Prepared UDP client program.)

c++聊天软件客户端代码，可以实现和双方互相聊天，必须客户端后启动(c++ chat software client code)

Make the program start with the system()

TCP CS 模式文件传输可以下载和上传文件,也可浏览服务器端文件(TCP CS file transportation)

E book contains c+ and c sharp lessons

使用qt实现网络爬虫，爬取自己感兴趣的图片。原理是采集地址，然后存数据，再去下载。(Use QT to achieve web crawler and crawl pictures that you are interested in. The principle is to collect addresses, then store data, and then download them.)