There exists a broad family of multiparty sessions in which the progress of one session participant is not unconditional, but depends on the choices performed by other participants. These sessions fall outside the scope of currently available session type systems that guarantee progress. In this work we propose the first type system ensuring that well-typed multiparty sessions, including those exhibiting the aforementioned dependencies, fairly terminate. Fair termination is termination under a fairness assumption that disregards those interactions deemed unfair and therefore unrealistic. Fair termination, combined with the usual safety properties ensured within sessions, not only is desirable per se, but it entails progress and enables a compositional form of static analysis such that the well-typed composition of fairly terminating sessions results in a fairly terminating program.
Thu 9 JunDisplayed time zone: Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna change
15:30 - 17:00
|A Self-Dual Distillation of Session Types (Pearl)VCOOP 2022ECOOP 2022|
Jules Jacobs Radboud University NijmegenPre-print
|Stay Safe under Panic: Affine Rust Programming with Multiparty Session TypesVCOOP 2022ECOOP 2022|
|Fair Termination of Multiparty SessionsECOOP 2022|
|Design-by-Contract for Flexible Multiparty Session Protocols - Choreography Automata for distributed TypeScript programmingECOOP 2022|