The Research And Implementation Of The Message-oriented Middleware

Along with the development of computer network technology and distributed application going deep into use, it is vendor's impending demand to migrate the proprietary Client-Server model to Three Tier Software Architectures, which has emerged as the dominant computing paradigm in the decade.Message-oriented middleware (MOM) is a special middleware based on message-transmission, and it provides effective and reliable message transmission for communication across heterogeneous platforms. MOM services allow distributed application to locate transparently across the network, which provide interaction with another application or service, be independent from network services and scale up in capacity without losing function.The Open Group is an international open systems organization that is leading the way in creating the infrastructure needed for the development of network-centric computing and the information superhighway. Formed in 1996 by the merger of the X/Open Company and the Open Software Foundation, The Open Group is supported by most of the world's largest user organizations, information systems vendors and software suppliers. The X/Open Distributed Transaction Processing (DTP) model is a software architecture that allows multiple application programs to share resources provided by multiple resource managements, and provides international standard for distributed application.First, based on system aspect, after synthetically analyzing X/OPEN DTP model and TCP/IP protocol, the paper implements a Message-oriented middleware product OpenMessageO software which applies to asynchronous fallible network and heterogeneous platforms.The slide windows protocol can provide the synchronous and effective communication for fallible network. Based on UDP protocol, the paper implements OpenMessageQ protocol which is used to deal with control of flow and fault, after analyzing mending and validating the slide windows protocol.RSA is a public-key cryptosystem in an effort to help ensure Internet security. RSA cryptosystem is used by OpenMessageQ to complete security management. Inaddition the paper has discussed and analyzed some correlative technologies else.And then based on correlative technologies above, the paper brings forward OpenMessageQ architectures which is made up of message queue, interface service module security management module, queues manager and interface. Not only OpenMessageQ provides real-time, effective secure network communication services for applications, but also allows named communication across Windows and Linux platform.Finally the paper gives an application sample to complete database transfer and backup, in which OpenMessageQ and the application is synthetically integrated.