Verifying the Communication and Security Mechanisms of WAMP

The Web Application Messaging Protocol (WAMP) is a routed protocol designed to connect components in distributed applications through Publish/Subscribe and Remote Procedure Call messaging patterns. It defines a Basic Profile for core interactions and an Advanced Profile to extend its functionality. With its flexibility, scalability, and ability to support various communication patterns, WAMP has gained significant attention in distributed systems. However, existing studies on the communication and security properties of WAMP remain limited. In this paper, we employ the Communicating Sequential Processes (CSP) to model the two patterns of WAMP formally and verify several properties using Process Analysis Toolkit (PAT), including deadlock-freedom, data reachability, concurrency and ordering consistency. Verification results confirm that the model satisfies these properties, ensuring the reliability of interactions under various scenarios. Furthermore, by incorporating an intruder model and WAMP’s optional authentication mechanisms from the Advanced Profile, we demonstrate improved security guarantees.