The Research And Realization Of Instant Messaging System Based On P2P

ABSTRACT: Instant Messaging becomes more and more popular with the technology of networking. The Instant Messaging produce for person, such as MSN, QQ and something else are well known in the world. But actually nowadays the Instant Messaging produce for enterprise are the hottest. This kind of tool or products can be big help for business or production procedure. We will introduce such kind Instant Messaging System which focuses on Printing Industry. It beats some traditional tools:E-Mail, FTP….and offers a fresh, useful and effective way for some business related printing stuff.This article accounts for the actual state, developing trend and current problems of instant messaging system, brings up the technological route of instant messaging system based on P2P; discusses the basic theory of C/S, SIP stack, some technology related database and even stratagem about setting up TCP through NAT/Firewall. On the base of theoretical researches, It brings up the model of instant messaging system which based on P2P.In this model, there are some descriptions about system structure model and module function; Then we focus on the core module in this system—File Transferring Module. The main technology is also supposed to be P2P. We give a different way to make the file transferring and even sharing function better. It's not realized yet in real world but proved to be practical.Our system has been used for a while and been proved to be convenient and helpful for printing industry. We also believe our system will be wildly used in so many different fields with more and more advanced technology in the future.