A multipath transport system based on application level relay

Multipath transport is an important way to improve the transmission performance of Internet applications. This demo presents a multipath transport system based on application level relay (MPTS-AR), which defines three kinds of logical entity of user agent, controller and relay server. Controller and relay server collaboratively provide relay services, and user agent integrates the multipath transmission control mechanism and protocol stack. It also defines a relay service control protocol named OpenPath in control plane and a suite of multipath transport protocols (MPTPs) in data plane. The example of SIP-based real-time audio media session further illustrates the practicability of MPTS-AR.