TCPServerclient

说明：  DNS解析系统，通过发送DNS协议包到DNS服务器来获取DNS(DNS analysis system, the agreement by sending a DNS packet to the DNS server to obtain the DNS)

ZXPortMap 端口映射源代码 一个很好的端口映射工具(ZXPortMap port mapping source code for a good port mapping tool)

低电阻测试仪上位机程序，带参数设置功能自动量程、讯响、单次连续、报警上下限设置，及测量数据即时上传功能(Low resistance tester upper computer program, with parameter setting function, automatic range, sound, single continuous, alarm upper and lower settings, and measurement data immediate upload function)

说明：  一款与CuteFTP软件相媲美的源代码,非常值得下载，学习和参考Ftp工具VC++编程必不可少的源码，学习和使用FTP的朋友不仿下载一看!(A match with the CuteFTP software source code, very worth the download, Ftp tools for learning and reference VC++ Indispensable source programming, learning and use FTP to download the friend does not like a look!)

搭建一个有4个部门的公司网络，包含研发部门、测试部门、管理部门和销售部门，利用局域网模型在一个对象中模拟一个服务器和多个客户端的行为(Set up a department of four corporate network, including R & D department, testing department, management department and sales department, the use of local area network model of an object in the simulation at a server and multiple clients of conduct)

多协议文件传输c/s网络应用设计与实现,程序用 TCP/UDP 两个协议模拟多协议服务器。首先服务器端要将两种协议的套接字创建好，并且监听 TCP 端口的连接。必要时使用select函数来进行多连接处理和非阻塞处理。而客户端直接可以按照发送的地址和端口号来进行通讯。 首先要运行服务器端，服务器会监听 TCP 端口。然后运行客户端，根据事先设定好的 IP和端口，就可以进行连接传输数据了。 程序实现的关键步骤： 以TCP协议为例 服务器端： 1.创建套接字；2.绑定端口；3.进入无穷的循环；4.接收请求；5.处理请求；6.应答。 客户端： 1.找到服务器的IP地址和协议的端口号；2.创建套接字；3.确定连接需要任意的，没有使用的端口号允许TCP去选择一个；4.将套接字和服务器连接；5.使用应用层协议和服务器交互；6.关闭连接。 (Multi-protocol file transfer c/s network application design and implementation of programs simulate multi-protocol server with TCP/UDP both protocols. First socket server to create a good two protocols, TCP port and listens for connections. If necessary, use the function to handle multiple connections and non-blocking treatment. And the client can follow directly address and port number to communicate. First run on the server side, the server listens on TCP port. Then run the client, according to pre-configured IP and port, you can connect the data transmission. The key step program implementation: In TCP protocol as an example Service-Terminal: 1. Create a socket 2 bound port 3 enter an infinite loop 4. receiving a request 5. processing requests 6 response. Clients: 1. Locate the server s IP address and protocol port number 2 creates a socket 3 connections need to determine arbitrary, unused port allows TCP to choose a 4 and the socket server connections 5 using appli)

说明：  网络安全与密码学技术，用qt作为界面，利用md5算法实现的文件防篡改程序。(Network security and cryptography, using qt as an interface, use the file md5 algorithm tamper program.)

TCP和UDP socket编程，向固定服务器发送学号姓名信息，用udp从服务器获得一个随机字符串(TCP and UDP socket programming, Student ID Name information sent to the fixed server udp from server to obtain a random string)

说明：  点对点的聊天工具，公司不让QQ,SKYPE，就动手写了个超小巧的聊天工具(Peer-to-peer chat tool company from QQ, SKYPE, on hand to write a super-compact chat tools)

ava 框架，以前找的，不知道现在能用不，需要的自己下载(ava kuangjia )