即时通讯软件的设计.docVIP

摘要 随着计算机科学和Internet的飞速发展,网上聊天已成为人们相互交流的一种重要方式,与E-mail,电话相比,聊天服务更具有实时性和有效性. 即时通信快捷、廉价、隐蔽性等特点，在网络上年龄、身份、行业、地域的限制，达到人与人之间的零距离交流使得人们的沟通更加方便、快捷截止到目前，全球约有近3亿多人使用即时通讯软件进行交流本论文是关于一个通信软件的设计与实现首先介绍了的来源和意义 以及中使用的技术原理, 包括客户/服务器模式(C/S)结构原理, TCP/IP协议的体系结构等然后分析了系统的整体设计,包括系统的功能介绍、实现思想, 系统的需求分析, 系统通信协议的设计，各个模块的体系结构 在文中提供了部分功能模块实现的源代码 最后，本文还粗略地探讨了软件的测试用例设计和完成此次设计的心得体会。 关键字： C/S结构TCP/IP协议Abstract Along with the high-speed development of the computer science and Internet , chatting on line has been an important method in our communication .Comparing with E-mail and telephone, the chat-line service is more real-time and effective. Instant communication with fast, cheap, concealment, etc., makes people to communicate with each other more convenient and faster in a zero distance which breaks the restrictions of age, identity, industry and regional.Up to now, nearly 3 billion people around the world to use instant messaging software to communicate. The paper is about the design and realization of instant messaging software. First this paper introduced topic origin and the topic significance and the status of instant messaging software. As well as the principle and the technology that adopted in the paper , Including Customer/Server (C/S) structure principle, TCP/IP protocol system structure,C++ network programming ,socket , multithread technique and so on. Then author analyzes that the overall design, Including system function introduction, realization way, demand analysis, communication agreement design, system structure of each module. In the paper we provide some source code with achieving part of function modules. At last we can learn experience in this designing and roughly discuss software’ test example designing. In this to point out the software has only completed the basic function as a chatting system,so it need much more improvement. Key words: the C/S Structure , the TCP/IP Protocol, Instant Messaging, Socket 目 录 第一章 绪论 1 §1.1即时通讯软件设计的意义及来源 1 §1.2