本科毕业设计（2009届）题目局域网内即时通信工具的开发学院计算机学院专业网络工程班级050521学号05052113学生姓名韩寅指导教师徐翀完成2009年6月日期诚信承诺我谨在此承诺：本人所写的毕业论文《局域网内即时通信工具的开发》均系本人独立完成，没有抄袭行为，凡涉及其他作者的观点和材料，均作了注释，若有不实，后果由本人承担。承诺人（签名）：年月日摘要本毕业论文课题主要研究局域网内即时通信工具的开发。我们根据其体系结构与设计原理开发出了界面简洁、方便易用的即时通信工具。它的主要功能有：一对一聊天，文件传输，远程桌面控制。在该即时通信工具中，传输都用到了TCP/IP协议，客户端之间采用的是P2P技术进行通信。本文首先概述了即时通信工具的背景，其次介绍了软件开发的环境和开发技术和开发工具，给出了软件系统的架构，然后详细地介绍了该即时通信工具的设计实现，最后对系统进行了简单的测试。关键词：即时通信；P2P；TCP/IPABSTRACTThemaintopicofthisthesisistheresearchofthedevelopmentofLANinstantmessagingtools.Accordingtoitsarchitectureanddesignprinciple,wedevelopedauser-concise,easy-to-useinstantmessagingtool.Therearemanyfeaturesareshownasfollow:one-on-onechat,filetransferandremotedesktopcontrol.Intheinstantmessagingtool,thetransferusetheTCP/IP,theclientisbasedontheP2Ptechnologyforcommunication.Thepaperfirstdescribesthebackgroundofinstantmessagingtools,andthenintroducesthesoftwaredevelopmentenvironmentandthedevelopmentoftechnologyanddevelopmenttools,giventhestructureofsoftwaresystems,thenpresentsthedesignofreal-timecommunicationtoolstoachieveindetail.Attheendofthepaperisthesystemsimpletest.Keywords：instantmessaging;P2P;TCP/IP目录1引言..................................................................................................................12概述..................................................................................................................22.1背景...........................................................................................................22.2即时通信的概念和特点.............................................32.3系统需求...........................................................................................42.4即时通信工具的应用.....................................................42.5即时通信工具要解决的问题..............................43工具介绍...................................................................................................63.1NETBEANSIDE...................................................................................................63.2JAVADEVELOPMENTKIT................................................................................63.3P2P技术介绍....................................................................................73.4P2P模式与C/S模式对比.....................................................83.5TCP/IP结构体系................................................................................93.6WINDOWSSOCKETS........................................................................................103.7WINDOWSAPI...................................................................................................114概要设计...............................................................................................134.1系统整体设计........................................................................134.2系统结构图................................................................................134.3网络通信程序设计过程................................
