Research And Design On Communication Model Based On TCP In Vsap System

With the development of information technology,it is taken seriously by manager to take a scientific and effective management in each department and steps of manufacturing.Through the management of information,manager could not only take a good grasp of the general situation of the company,but also make detailed analysis and summary on a single event.So we could say,information management is a efficient means in improving labor productivity.Therefore,at the appearance of the PDM system,it is used widely in a short time.Although the use of PDM system started relatively latein China,management system of information is more and more cognizant of an important thing by managers.But,the mainstream of the current used PDM systems don't take effect very well for those companies whose management system is not normative yet.The main reason is that irregular working habits and management system can not be changed easily by using a so-called management system in a short time.It also exists disordered organization in works.Works are done in accordance with the personal habits.The management systemis irreconcilable with workers.Accordingly,from the reality faced by most enterprises,especially SMEs,out team develops a customized information management system called vsap(various solution of all in one pattern).This system can provide the process control services and information managementin the process of production and manufacture.In this paper,I put forward the research and design on communication model based on TCP in vsapsystem.This article states a comprehensive research of common needs and individual needs to the information management system by most companies.I create a communication model according to the needs to the message communication.This work also states the analysis and design of the communication framework,transmission mode,transport protocol,message classification,security encryption about this communication model.Then I write the code.In practical work,this code could not only provide functions of sending and receiving e-mail,file transfer,module updating,but also provides a stable instant messaging system combined with the e-mail system for customers.Finally,this paper shows some pictures which are screen shot of specific usage.These pictures are illustration that this communication model and corresponding code is effective during the production.