Re: WiSH: A General Purpose Message Framing over Byte-Stream Oriented Wire Protocols (HTTP)

Takeshi Yoshino <tyoshino@google.com> Fri, 28 October 2016 18:17 UTC

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From: Takeshi Yoshino <tyoshino@google.com>
Date: Sat, 29 Oct 2016 03:12:52 +0900
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To: =?UTF-8?B?TG/Dr2MgSG9ndWlu?= <essen@ninenines.eu>
Cc: Costin Manolache <costin@gmail.com>, Wenbo Zhu <wenboz@google.com>, "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>
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Subject: Re: WiSH: A General Purpose Message Framing over Byte-Stream Oriented Wire Protocols (HTTP)
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On Sat, Oct 29, 2016 at 2:55 AM, Loïc Hoguin <essen@ninenines.eu> wrote:

> On 10/28/2016 08:41 PM, Costin Manolache wrote:
>
>> Current overhead is 2 bytes if frame is up to 125 bytes long - which I
>> think it's not very common,
>> 4 bytes for up to 64k, and 10 bytes for anything larger.
>> IMHO adding one byte - i.e. making it fixed 5-byte, with first as is,
>> and next 4 fixed length would
>> be easiest to parse.
>>
>
> Is making it easy (or easier) to parse even a concern anymore?
>
> Considering the number of agents and servers already supporting Websocket,
> the numerous libraries for nearly all languages and the great
> autobahntestsuite project validating it all, reusing the existing code is a
> very sensible solution.
>
>
Yeah, I've been having similar feeling regarding cost for parser/encoder
implementation though I might be biased.


> There are obviously too many options to encode and each has benefits -
>> my only concern was
>> that the choice of 1, 2, 8 bytes for length may not match common sizes.
>>
>> ( in webpush frames will be <4k ).
>>
>
> --
> Loïc Hoguin
> https://ninenines.eu
>