On the Expressiveness of Multiparty Sessions

Authors Romain Demangeon, Nobuko Yoshida

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Romain Demangeon
Nobuko Yoshida

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Romain Demangeon and Nobuko Yoshida. On the Expressiveness of Multiparty Sessions. In 35th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 45, pp. 560-574, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)


This paper explores expressiveness of asynchronous multiparty sessions. We model the behaviours of endpoint implementations in several ways: (i) by the existence of different buffers and queues used to store messages exchanged asynchronously, (ii) by the ability for an endpoint to lightly reconfigure his behaviour at runtime (flexibility), (iii) by the presence of explicit parallelism or interruptions (exceptional actions) in endpoint behaviour. For a given protocol we define several denotations, based on traces of events, corresponding to the different implementations and compare them.
  • concurrency
  • message-passing
  • session
  • asynchrony
  • expressiveness


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