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Network Development Kit is a set of simple classes for a client-server architecture. Network Development Kit is a set of simple classes for a client-server architecture.

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.)

1、实现多个网络调试助手示例在一个进程中启动； 2、可以实现TCP_SERVER,TCP_CLIENT,UDP，UDP组播通信；(1, multiple network example debugging assistant to start a process 2, can achieve TCP_SERVER, TCP_CLIENT, UDP, UDP Multicast communication )

ns2网络仿真的实例以及对应测试分析代码，含有时延，抖动，丢包率等(ns2 network simulation examples and counterparts test analysis code, containing latency, jitter, packet loss rate etc.)

说明：  vb做的局域网监控系统，同学的毕业设计，研究winsock很有用(vb to do the LAN monitoring system, students graduating from design, research useful winsock)

本书主要介绍了如何用API函数进行网络间通信(The book introduces how to use the API function communication networks)

这是一个简单的socket编程例子，非常适合刚接触socket编程者。程序简单、可用、易于理解。是个很好的socket范例。(A simple socket programming examples. Suitable for beginners. Program is simple, available, easy to understand. Is a good example of socket programming.)

说明：  /** * 动态数组的模板类 * 1.支持字符索引 * 2.方便的添加删除修改任意一项 * 最后更新 2004-8-9 yzh **1.优化了字符索引的运作方式，使用数组存储 **2.重写了底层数据的存储，将连续性的存储方式改为了非连续, *** 从而很好有效地支持了“引用”,并且让数据的删除增加变的更为快速 * 用法如： * YCArray<int,int> test * test.Add("Number2",4) * test.Add("Number1",2) * printf("%d %d",test["Number1"],test["Number2"]) * 显示： * 2 4 ******* ******* History: 2004-11-19 修改了析构函数,解决了索引没有释放的bug **/(/*** dynamic array template class* 1. Support characters Index* 2. Add convenience to delete arbitrary* a final update 2004-8-9 yzh** 1. Character Index optimized mode of operation, the use of storage arrays** 2 . a rewrite of the underlying data storage, storage continuity conversion of non-continuous, and thus good*** effective support to the "quote", and let the data changed to delete the more rapid* usage such as :* YCArraylt; int, intgt; test* test. Add ( "Number2", 4)* test.Add ( "Number1", 2)* printf ( "% d% d", test [ "Number1"] test [ "Number2"])* Display :** 2 4************* History : 2004-11-19 revised the destructors, the index did not address the release of bug** /)

说明：  基于WinSock的UDP数据转发(Win XP；Visual C++ 6.0)(WinSock based on the UDP data transmitted (Win XP; Visual C 6.0))

SYN Flood是当前最盛行的DoS（拒尽服务进攻）与DDoS（散布式拒尽服务进攻）的方法之一，这是一种利用TCP协议缺点，发送大批伪造的TCP连接请求，从而使得被进攻方资源耗尽（CPU满负荷或内存不足）的进攻方法。(SYN Flood is one of the most popular DoS (refuse to do service attack) and DDoS (Distributed refuse to do service attack), which is a Use the TCP protocol shortcomings, sending a large number of forged TCP connection requests, making the offensive resource exhaustion (CPU full load or memory) Offensive....)