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Re: [multipathtcp] Multipath TCP FAST_CLOSE - abrupt closing

Olivier Bonaventure <olivier.bonaventure@tessares.net> Wed, 20 September 2017 09:14 UTC

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To: Yoshifumi Nishida <nishida@sfc.wide.ad.jp>, François Finfe <francois.finfe@tessares.net>
Cc: multipathtcp <multipathtcp@ietf.org>
References: <b3968dc9-0500-5907-4e13-8aa350d12f11@tessares.net> <CAO249yf90+3eaH-0BR9izrqje38pwfd-ARQLKOwN0q_W5mTWPQ@mail.gmail.com> <804577f3-f2a7-0726-08b3-717abe43f9c8@tessares.net> <CAO249yf6LfZ1a10FjeP78zX9diaT1K39HObZ6ptiDwYFpUwxmg@mail.gmail.com>
From: Olivier Bonaventure <olivier.bonaventure@tessares.net>
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Date: Wed, 20 Sep 2017 11:14:54 +0200
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Subject: Re: [multipathtcp] Multipath TCP FAST_CLOSE - abrupt closing
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Yoshifumi,
> 
> Thanks for the comments.
> One concern I have is it seems that people are expecting to expose this 
> feature to apps although this won't be a recommended way to terminate an 
> MPTCP session.
> I think It won't be good if we end up always using it even when there's 
> no resource limitations.

An implementation could send RST with an option on all paths when 
SO_LINGER is set to zero or under pressure and send RST without option 
on all paths except one when SO_LINGER is larger



Olivier

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