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Re: [multipathtcp] [Int-area] SOCKS 6 Draft

Joe Touch <touch@isi.edu> Wed, 05 July 2017 04:44 UTC

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From: Joe Touch <touch@isi.edu>
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Date: Tue, 04 Jul 2017 21:43:41 -0700
Cc: mohamed.boucadair@orange.com, David Schinazi <dschinazi@apple.com>, multipathtcp <multipathtcp@ietf.org>, "Int-area@ietf.org" <Int-area@ietf.org>
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Subject: Re: [multipathtcp] [Int-area] SOCKS 6 Draft
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> On Jul 4, 2017, at 4:35 PM, Vladimir Olteanu <vladimir.olteanu@cs.pub.ro> wrote:
> 
>  * We avoid using the SYN's payload as extra option space (which, I think, goes against TCP's core philosophy).

It's not philosophy - it's a requirement for backward compatibility as required for receivers not supporting new options in the SYN. 

See https://tools.ietf.org/html/draft-touch-tcpm-tcp-syn-ext-opt-06

Issues are discussed in detail in sec 8 of https://tools.ietf.org/html/draft-ietf-tcpm-tcp-edo-06

Joe

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