[multipathtcp] Socket API for MPTCP

Olivier Bonaventure <Olivier.Bonaventure@uclouvain.be> Fri, 08 July 2016 15:56 UTC

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To: multipathtcp <multipathtcp@ietf.org>, "<mptcp-dev@listes.uclouvain.be>" <mptcp-dev@listes.uclouvain.be>
From: Olivier Bonaventure <Olivier.Bonaventure@uclouvain.be>
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Date: Fri, 8 Jul 2016 17:56:45 +0200
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Subject: [multipathtcp] Socket API for MPTCP
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Hello,

During the last years, we have received on a regular basis questions 
from users of Multipath TCP on how they could control the utilisation of 
the subflows. In the Linux implementation, the default solution was to 
tune the path manager, but this is kernel code and few users actually 
managed to change this path manager.

Benjamin Hesmans has spent some time to think about simple extensions to 
the socket API to allow applications to control the underlying Multipath 
TCP stack. He has implemented his ideas and has running code. A first 
draft describing his API has been submitted to the IETF :


Title:		A socket API to control Multipath TCP
URL: 
https://www.ietf.org/internet-drafts/draft-hesmans-mptcp-socket-00.txt

Abstract:
    This document proposes an enhanced socket API to allow applications
    to control the operation of a Multipath TCP stack.

A related paper will also appear at the ANR workshop :

https://irtf.org/anrw/2016/anrw16-final16.pdf


We have requested a slot to present in Berlin. We expect that agreeing 
on a common socket API exposed by Multipath TCP implementations would 
help its end-to-end deployment.


Olivier and Benjamin