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Asynchronous timed session types: from duality to time-sensitive processes

Bocchi, Laura, Murgia, Maurizio, Vasconcelos, Vasco Thudichum, Yoshida, Nobuko (2019) Asynchronous timed session types: from duality to time-sensitive processes. In: Lecture Notes in Computer Science. Programming Languages and Systems. ESOP 2019. 11423. pp. 583-610. Springer ISBN 978-3-030-17183-4. E-ISBN 978-3-030-17184-1. (doi:10.1007/978-3-030-17184-1_21)

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We present a behavioural typing system for a higher-order timed calculus, using session types to model timed protocols, and the calculus to abstract implementations. Behavioural typing ensures that processes in the calculus will perform actions in the time-windows prescribed by their protocols. We introduce duality and subtyping for timed asynchronous session types. Duality includes a class of protocols that previous work on asynchronous timed session types could not type-check. Subtyping is critical for precision of our typing system, especially for session delegation. The composition of dual (timed asynchronous) types enjoys progress when using an urgent receive semantics, in which receive actions are executed as soon as the expected message is available. Our calculus increases the modelling power of calculi used in the previous work on timed sessions, adding a blocking receive primitive with timeout, and a primitive that consumes an arbitrary amount of time in a given range.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1007/978-3-030-17184-1_21
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming, > QA76.76 Computer software
Divisions: Faculties > Sciences > School of Computing > Programming Languages and Systems Group
Depositing User: Laura Bocchi
Date Deposited: 11 Feb 2019 15:37 UTC
Last Modified: 09 Jul 2019 11:22 UTC
Resource URI: (The current URI for this page, for reference purposes)
Bocchi, Laura:
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