348 A Framework for Model Checking Web Service Choreography Based on CWB

Web services are software applications which can be used through a network (intranet or Internet) via the exchange of messages based on XML standards. They are aimed at wild reusability and are typically designed to interact with other in order to build larger applications. Web service sometimes requires combining more than one to meet our requirements. Service composition is the process of creating new services from a set of services. In this context, one of the important investigations is the choreography compatibility analysis. We mean by the choreography compatibility the capability of a set of Web services of actually interacting by exchanging messages in a proper manner. Whether a set of services are compatible depends not only on their sequences of messages but also on quantitative properties such as timed properties. In this paper, we present a Framework for Model Checking Web Service choreography based on CWB in which the Web services support synchronous or asynchronous timed communications. Particularly, in this paper we present a new modeling of Web services using Temporal Calculus of Communicating Systems (TCCS).