Groote, Jan Friso and Willemse, Tim A. C. - A symmetric protocol to establish service level agreements

lmcs:6044 - Logical Methods in Computer Science, September 30, 2020, Volume 16, Issue 3
A symmetric protocol to establish service level agreements

Authors: Groote, Jan Friso and Willemse, Tim A. C.

We present a symmetrical protocol to repeatedly negotiate a desired service level between two parties, where the service levels are taken from some totally ordered finite domain. The agreed service level is selected from levels dynamically proposed by both parties and parties can only decrease the desired service level during a negotiation. The correctness of the protocol is stated using modal formulas and its behaviour is explained using behavioural reductions of the external behaviour modulo weak trace equivalence and divergence-preserving branching bisimulation. Our protocol originates from an industrial use case and it turned out to be remarkably tricky to design correctly.


Volume: Volume 16, Issue 3
Published on: September 30, 2020
Submitted on: January 22, 2020
Keywords: Computer Science - Logic in Computer Science


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