The Design And Implementation Of Instant Messaging System In Chongqing Health Education Institute

In recent years,our country has made great progress in health information construction,in the daily work of health education in Chongqing City,it also always carries on the exploration of information technology.With people's attention to health,how to unify and specify education propaganda caliber more fast and effectively,and how to understand situation of the front-line is becoming an extremely urgent.This topic is based on this background,and strive to research a set of independent of the terminal of the instant messaging system,to make the whole area health education staff response front-line situation and accept the unified business training through mobile phones,tablet or personal computers.This subject is based on Web RTC technology to achieve the system without the need to install the client for communicating.Web RTC is a new technology for the integration of real-time audio and video communication in the browser,which provides the core technology of video conference,including audio capture,video acquisition,network transmission,decoding function,allows developers to use HTML and Java Script API to create a real-time application.System described in this article is a real-time video communications systems based on Web RTC.The instant messaging system uses B/S mode.It realized more earth-point instant text message communications,audio and video communication and file transfer functions only through the browsers of computers or phones.It runs cross Windows,Linux,Mac and Android.This paper mainly completes the following work:1 Analyze the communication of health education in Chongqing city and introduce the developing situation of the commucation technology through the background of the instant messaging,and analyze the advantages of Web RTC communication.2 Analyze and study the related technologies of system,including background structures with node.js,the Web Socket protocol for communication from frontend to backend,the ICE through technology for point to point connection,the system required the use of non relational database which is known as Mongo DB and the Web RTC instant messaging technology3 Analyze the system requirements of the system and design it,describe theoverall system architecture and the implementation method,give the relevant technical selection,and design the main business processes such as login and registration,text messaging,video communications,file transfer.4 The system is divided into modules to achieve,including the implementation of the server side and the business logic layer,and describe the system display effect and test results,finally summarize the results achieved in the paper,and points out that the system is insufficient and the future of the system.