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Conference Papers Year : 2021

Manifestly Phased Communication via Shared Session Types

Abstract

Session types denote message protocols between concurrent processes, allowing a type-safe expression of inter-process communication. Although previous work demonstrate a well-defined notion of subtyping where processes have different perceptions of the protocol, these formulations were limited to linear session types where each channel of communication has a unique provider and client. In this paper, we extend subtyping to shared session types where channels can now have multiple clients instead of a single client. We demonstrate that this generalization can statically capture protocol requirements that span multiple phases of interactions of a client with a shared service provider, something not possible in prior proposals. Moreover, the phases are manifest in the type of the client.
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hal-03387824 , version 1 (20-10-2021)

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Chuta Sano, Stephanie Balzer, Frank Pfenning. Manifestly Phased Communication via Shared Session Types. 23th International Conference on Coordination Languages and Models (COORDINATION), Jun 2021, Valletta, Malta. pp.23-40, ⟨10.1007/978-3-030-78142-2_2⟩. ⟨hal-03387824⟩
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