CommunicationEngineerNetWorkPractise

一个网络后门程序。演示了通过Http通道的功能穿透安全级别非常高的防火墙，甚至硬件防火墙。()

基于opnet的胖树多播网络仿真，主要为多播算法的仿真，程序较完善(Opnet fat tree multicast network simulation, primarily for multicast algorithm based simulation program better)

基于流式套接字的TCP回射程序的客户端以及服务器(Retroreflective program based on the TCP stream socket)

RC4算法的加密实现，实现对明文的加密，加密效果很不错(RC4 encryption algorithm, has implemented an express right of encryption, encryption is very good effect)

说明：  理解局域网的定义、特点 了解局域网的介质访问控制方法 了解以太网技术 了解局域网组网类型(Understand the definition of LAN and characteristics about LAN Ethernet media access control approach to understanding the technical understanding of LAN networking types)

说明：  基于 异步选择模型的聊天程序，简单实现服务器和客户端的对话(Select model based on asynchronous chat program, simple implementation of server and client dialogue)

微软提供的UDP编程实例代码，实现了客户端向服务端发送数据的功能，服务器端接收并显示。(UDP programming example code provided by Microsoft client functionality to send data to the server, the server-side receiver and display.)

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

实现 tcp的端口映射 不同于udp的实现方法(Realization of TCP port mapping from UDP realization method)

一个网络聊天的小工具，自己加了时间的功能，客户端(A network of small chat tools, increases the function of time, the client)