Re: Concepts to improve Http2.0

On 28/07/2016 6:30 p.m., Poul-Henning Kamp wrote:
> --------
> In message <em51dddd7f-de76-4e87-abcb-0f315b115499@bodybag>, "Adrien de Croy" w
> rites:
>> The problem with deferring headers in responses to after content, is=20
>> that proxies often make policy decisions based on response headers, and=20
>> therefore need these to be all up front.
>> Trailers for this reason are also a problem
> We talked about this in the workshop, and yes, trailers *in general*
> is a problem, but the specific trailers people care about are not.
> The trailers people ask for, as far as I understood:
> 	Etag
> 	Set-cookie
> 	Cache-Control(/Expires/Age)
> They are *not* a problem.

Technically true. But those last three are exceedingly annoying if
pushed into Trailers. Verging on being an outright attack. Since we
reserve cache space and do a lot of storage activity before finding out
whether its actually not cacheable after all. Usually something else
potentially useful got discarded to make room for it as well.


Received on Friday, 29 July 2016 07:51:42 UTC