基于P2P结构的即时通信系统的设计与实现

摘要

In order to achieve the IAN for communication,Instant messenger system is just a kind of LAN application software support platform which is based on a variety of basic applications under this idea and context This article mianly discusses how various function realized in instant messenger system. As for the audio captured function, it is realized by the built-in function function of windows; audio compression function is achieved by setting the buffer; the audio transmission function is achieved through the udp protocol; the video captured function is realized by the built-in video capture card; the video compression function is realized by H.263 standard; the video transmission function is achieved by udp protocol, text communication is realized by calling the socket communication.The experiment and application show that this system has a simple operation and accurate test,to achieve the design requirement.%为了实现在局域网中进行通信,即时通信系统就是在这种思想和背景下构思的一种基于多种基本应用的局域网应用软件支撑平台.即时通信系统中音频采集功能通过windows自带的功能函数实现,音频压缩功能通过设置缓冲区来实现,音频传输功能通过udp传输协议来实现,视频采集通过自带的视频卡采集来实现,视频压缩通过H.263标准来实现,视频传输通过udp传输协议来实现,文字通信通过调用套接字来实现.实际应用表明,该系统具有操作简便、测试准确的特点,达到了设计要求.