Toward the Right Communication Protocol for Web Services

Zahir Tari, Manish Malhotra, Abdelkamel Tari and Mark McKinlay
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Zahir Tari: RMIT University, Melbourne, Australia
Manish Malhotra: University of Bejaia, Berber State, Algeria
Abdelkamel Tari: RMIT University, Melbourne, Australia
Mark McKinlay: RMIT University, Melbourne, Australia

International Journal of Web Services Research (IJWSR), 2005, vol. 2, issue 2, 19-42

Abstract: Web Services require a common understanding of messages and message content in order to interact with each other. Several protocols have been proposed, which are coded into agent interfaces or implemented using framework-specific methods such as shared repositories. However, an agent wishing to interact with a large number of other disparate agents cannot be expected to have knowledge of how to initiate or maintain a conversation with all other agents it may encounter. In this paper, we propose a dynamic communication protocol for Web services—DynWES. This involves the publication of protocol specifications representing a finite state machine (FSM). A client agent downloads this specification, validates it for correctness, and then implements the protocol dynamically as a state machine. Mechanisms for building FSMs and checking their correctness are presented. An implementation of DynWES also is described and tested (using applications in the wine selling business domain).

Date: 2005
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