Re: HTTP -> Messages -> Transport factoring

On Thu, Apr 5, 2012 at 5:00 PM, David Morris <dwm@xpasc.com> wrote:

>
>
> On Thu, 5 Apr 2012, Mike Belshe wrote:
>
> > I would propose that HTTP only concern itself with reliable transports.
>  A
> > reliable transport provides both in-order delivery and guaranteed
> delivery.
> >  UDP does not provide guaranteed delivery (even if you use the 64K hack
> you
> > mention to avoid the in-order issues), and therefore is not a transport
> > worthy of discussion for HTTP/2.0 by itself.
>
> Yes ... I even wonder if HTTP itself should deal with the multiplexing or
> if HTTP should remain a request/response communication with the sorting
> out of multiple sub-streams handled by a lower layer. W/o a specification,
> it is hard to be sure, but I think I'd implement two layers, even if
> they arrive as a 'single layer' in the eventual spec.
>

That's exactly how SPDY is spec'd - the framing layer (section 2) with the
binding for HTTP messages on top of it (section 3)

Mike