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Runtime Verification of loT Systems using Complex Event Processing

2017    Incki, Koray; Ari, Ismail; Sozer, Hasan

Internet of Things (IoT) is a new computing paradigm that is proliferated by wide adoption of application level protocols such as MQTT and CoAP, each of which defines different styles of sequential interaction of events. Even though there is a considerable effort in the literature for verification of such complex and distributed systems, a practical solution for IoT systems that supports runtime system verification is still missing. In this paper, we present a runtime monitoring approach for IoT systems that exploits event relations expressed in terms of sequential interaction messaging model of Constrained Application Protocol (CoAP). We propose the use of Complex-Event Processing (CEP) to detect failures at runtime by exploiting complex event patterns defined via predetermined event algebra. We further present a simple case scenario to demonstrate the applicability of the approach on Wireless Token Ring Protocol execution.