Design And Implementation Of The Network Instant Communication Software

The network instant communication is the internet real-time information exchange. The subject originally design—To design the instant communication system with JAVA language is to better meet people's needs to chat on the network and completely realize point-to-point information communication between two computers, at the same time , also is now the network rapid development result.Instant communication system of the current Internet is a hot direction, especially with regard to enterprise-class instant communication system at home and abroad of more hot spots. Enterprise instant communication software from its birth, to the management of the business has brought new ideas and means. Promote the efficiency of the enterprises, to reduce the cost of office, has aroused research in the field of engineering craze.This subject uses object-oriented JAVA language and powerful SQL Server DMBS todevelop the network immediate communication system. That system make use of class libraries which the sun company provides . It can be used as a tool to communicate information in the company.This makes full use of resources and ensure inner information safe.The paper analysis the instant communication system development feasibility, and the key to the technical feasibility (choose JAVA) make the multianalysis ; With the aid of the data flow graph and the data dictionary to the system function and the performance carried on the detailed demand analysis, and established the system logical structure; Used structure chart and Hierarchy Plus Input/Processing output chart established the system overall structure; Used the Process Design Language to carry on the detailed design to the system each function module; Realized the system with the JAVA language code.The communication software achieve several functions as follows: register,login,addfriend,delete friends,search friends,send message and receive message. At the same time the application of technology to solve JMF session management and streaming media to send, receive, broadcast, and other key issues. RTP based on JMF comply with the agreement on the audio / video chat to achieve,Overcome the real-time streaming media transmission delay larger defects, solved many problems in the system implementation process.Its interface is neat and operate easily.