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Re: New Issue: Loss detection: Overloading of is_retransmittable

Ian Swett <ianswett@google.com> Tue, 06 June 2017 11:37 UTC

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From: Ian Swett <ianswett@google.com>
Date: Tue, 06 Jun 2017 07:36:47 -0400
Message-ID: <CAKcm_gPJs2qKo3XKH-RamTVrzVdzRbz3LPByjrN6rp-U+c-0Gw@mail.gmail.com>
Subject: Re: New Issue: Loss detection: Overloading of is_retransmittable
To: Magnus Westerlund <magnus.westerlund@ericsson.com>
Cc: IETF QUIC WG <quic@ietf.org>
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Thanks for the thorough review and filing in issue for this.

On Tue, Jun 6, 2017 at 4:11 AM, Magnus Westerlund <
magnus.westerlund@ericsson.com> wrote:

> Hi,
>
> In draft-ietf-quic-recovery-03 there appear to me to be an overloading of
> the use of the "is_retransmittable" flag. It appears to be used both for
> the purpose to indicate if there is a frame that can and need be
> retransmitted and if that frame should be counted as lost and impact
> congestion control. I think these two purposes should be separated and
> clarified as being two different ones. The reason is that if we create
> extensions that will not require retransmission of frames but needs to be
> included in the congestion control response a significant rewrite would be
> needed. I also think it would clarify things for some of the control frames
> also if they should be included or not, even if not regularly retransmitted.
>
> Cheers
>
> Magnus Westerlund
>
> ----------------------------------------------------------------------
> Media Technologies, Ericsson Research
> ----------------------------------------------------------------------
> Ericsson AB                 | Phone  +46 10 7148287
> Färögatan 6                 | Mobile +46 73 0949079
> SE-164 80 Stockholm, Sweden | mailto: magnus.westerlund@ericsson.com
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