Re: Getting to Consensus: CONTINUATION-related issues

On Fri, Jul 18, 2014 at 9:44 AM, Mark Nottingham <mnot@mnot.net> wrote:

> We've had a rollicking discussion about the design tradeoffs in
> CONTINUATION, especially regarding HOL blocking and DoS considerations.
>
> I see very little new information entering that discussion, and I think
> everyone has come to understand the tradeoffs. For a refresher, please see
> the wiki:
>   https://github.com/http2/http2-spec/wiki/ContinuationProposals
>
> I proposed two options the other day:
>
> a) Remove CONTINUATION from the specification and add a new setting that
> dictates the maximum HEADERS/PUSH_PROMISE frame size (as distinct from
> max_frame_size) a peer is willing to receive. I.e., the setting refers to
> the compressed header size.
>
> b) Keep CONTINUATION in the specification, and add a new setting that
> advises the maximum header set size (i.e,. uncompressed) a peer is willing
> to receive (but might not imply PROTOCOL_ERROR or STREAM_ERROR on receipt).
>
> Although there have been some tentative proposals for additional options
> since, I haven't heard a clamour for support for them, so I think these are
> realistically the ways we can go.
>
> As stated before, there will no doubt be tweaking and adjustments made to
> these, but I think we're in a place where we can choose a general direction.
>
> I'd like to hear:
>
> 1) Your preferred outcome (if any)
> 2) Whether you can live with the other option, and if not, why
>
>
My preference is b)​: Keep CONTINUATION.

​Cannot live with a) since it suffers from interop issue with http/1.1,
which is non-starter to me.
​b) is far more flexible in this regard.

Best regards,
Tatsuhiro Tsujikawa



> "I have no preference" is useful information too.
>
> If you indicate you can't live with one (or both) of the options, you MUST
> give a detailed, relevant reason as to why; omitting the reason means your
> "can't live with" will be ignored.
>
> Thanks,
>
> P.S. Please state *your* preference, not what you think the WG can live
> with.
>
> P.P.S. This is not a call for more discussion; please resist replying to
> others' preferences.
>
>
> --
> Mark Nottingham   https://www.mnot.net/
>
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