The Research On Remote Access Service System With Multi-Terminal Based On ACE Communication Environment

With the fast development of internet technology and various software and hardware invented, remote access service system with multi-terminal plays a very important role in the network service application field, and does much effect on system performance and practicability. The most important elements of the system include multi-platform processing, network concurrency, standard resolve scheme of abstract layer and so on. After many years' researching, some software developing organizations all over the world have put out to solve this challenge. To finish that end, represented by ACE, VC.net, Java, etc, a number of network-oriented service applications and multi-terminal access applications were invented and used widely in many different fields. By using the Visual Studio integrated software programming environment, a new software framework of remote access service system with multi-terminal has been proposed by this paper. A C/S network service application system based on this design was completed well.The system performance index of this framework was highlighted by this paper, and the features and advantages compared with other resolve schemes were analyzed, too. Firstly, the whole structure of this framework was summarized. Secondly, demanding analyzing, general design and particular design of this framework were given by this paper. Finally, a practical application sample was shown in the fourth chapter, and a prospect view based on the weakness of this design was given, then.Aiming at the target of designing a framework of remote access service system with multi-terminal based on ACE, such kind of technologies were used below:1. Import the cross-platform ACE design method which improves the system efficiency and reduce the design cost. This design has achieved many basic design modes used in the communication software field and do some high performance communication service designs on many different platforms.2. Adopt different communication configuring methods when resolving different kinds of data transfer tasks. Do some research on how to boost the executing efficiency in different transport situations.In the interest of having a reliable transmit mechanism, this paper uses the TCP protocol; the server can limit the number of active users and set the users'priority; the application layer uses a setting file to setup the system in real-time, and support a open command interface.3. Use MFC framework. It leads a tight combination between the ACE toolkit and the Microsoft user interface. Much research on the multi-framework programming based on ACE has been done in this paper.The research of this theme has been applied to the Jilin Communications Ministry's project which is undertaken by GNSS Institute in Dalian Maritime University. The project's name is "watercraft dynamic monitoring information system". The research result has had application in the project.