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Re: [Ecn-in-quic] ECN in QUIC, quick review input wanted

Gorry Fairhurst <gorry@erg.abdn.ac.uk> Mon, 18 December 2017 18:56 UTC

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To: "Eggert, Lars" <lars@netapp.com>, Magnus Westerlund <magnus.westerlund@ericsson.com>
Cc: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, Janardhan Iyengar <jri@google.com>, Ian Swett <ianswett@google.com>, "ecn-in-quic@ietf.org" <ecn-in-quic@ietf.org>
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From: Gorry Fairhurst <gorry@erg.abdn.ac.uk>
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Subject: Re: [Ecn-in-quic] ECN in QUIC, quick review input wanted
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On 18/12/2017 15:39, Eggert, Lars wrote:
> On 2017-12-18, at 16:27, Magnus Westerlund 
> <magnus.westerlund@ericsson.com <mailto:magnus.westerlund@ericsson.com>> 
> wrote:
>> I guess it becomes mostly a question of what is easiest to implement. 
>> An ACK and a combined ACK+ECN frame. Or one ACK and one ECN frame, 
>> where the later needs to be processed in the context of the first. 
>> Something for the people with implementation experience to answer.
> 
> For me, combined is easier, because you can keep state local.
> 
> Lars
> 
> 
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> 

You'd likely need bot to process the ECN information, so combined seems 
best from a protocol mechanism point of view.

Gorry

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