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A Sniffer Based Approach to WS Protocols Conformance Checking

To reduce interoperability problems arising from ambiguous or incomplete Web services protocol specifications, we have recently introduced a formal framework, which allows modelling and automatic verification of such protocols. However, interoperability problems can still occur due to incorrect implementations. In this paper, we introduce a sniffer based approach to check the conformance of a protocol's implementation to its specification; messages of the actual implementations are captured, processed and checked against the specification's formal model. We also briefly illustrate the application of our framework using a version of the WS-AtomicTransaction protocol