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Protocol Conformance Testing a SIP Registrar: an Industrial Application of Formal Methods

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4 Author(s)

Various research prototypes and a well-founded theory of model based testing (MBT) suggests the application of MBT to real-world problems. In this article we report on applying the well-known TGV tool for protocol conformance testing of a Session Initiation Protocol (SIP) server. Particularly, we discuss the performed abstractions along with corresponding rationales. Furthermore, we show how to use structural and fault-based techniques for test purpose design. We present first empirical results obtained from applying our test cases to a commercial implementation and to a popular open source implementation of a SIP Registrar. Notably, in both implementations our input output labeled transition system model proved successful in revealing severe violations of the protocol.

Published in:

Fifth IEEE International Conference on Software Engineering and Formal Methods (SEFM 2007)

Date of Conference:

10-14 Sept. 2007