Programming application-defined multipath TCP schedulers: demo

Abstract

Multipath TCP is the de facto multipath protocol in today's Internet. In this demo, we show how the recently proposed ProgMP programming model for Multipath TCP scheduling enables application- and preference-aware Multipath TCP scheduling within the Multipath TCP Linux Kernel. We use ProgMP to systematically derive the specification of a novel scheduler which retains an application-specific acceptable round-trip time and subflow preferences. This scheduler only utilises non-preferred (e.g., metered cellular) subflows if all preferred subflows (e.g., WiFi) do not retain the acceptable upper round-trip time. We further evaluate this novel scheduler by executing the scheduler specification within the ProgMP runtime in the Multipath TCP Linux Kernel.