Modelling the WAP transaction service using coloured petri nets

The Wireless Application Protocol (WAP) is an architecture designed to support the provision of wireless Internet services to mobile users with hand-held devices. The Wireless Transaction Protocol is a layer of WAP that provides a reliable request/response service suited for Web applications. In this paper Coloured Petri nets are used to model and generate the possible primitive sequences of the request/response Transaction Service. From the results we conclude that the service specification lacks an adequate description of what constitutes the end of a transaction. No other deficiencies were found in the Transaction Service.