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Re: Multi-GET, extreme compression?

Phillip Hallam-Baker <hallam@gmail.com> Mon, 18 February 2013 02:43 UTC

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References: <CAMm+LwiF6EM8_aQgUm=nPS5XqaG25iRGNke_rnHTM1vTGMXdfg@mail.gmail.com> <A6A82B6EF92590887D2A23D5@cyrus.local> <D9118B58-F53F-4F75-8292-2B990172E234@opengroupware.org> <CABP7RbcX2OqttZuYeuYxhyOgE_ax0M67L1ywPy_VDpW1upM69Q@mail.gmail.com> <CAP+FsNeWDBTBYJ0P-URbO5avbUno5etKid10RM+dRwDWAUys2w@mail.gmail.com> <CABP7RbfVvZnYPPsRvzmC0BtCiPBxQmYXHTRKtq8XE7Z2wY2EfA@mail.gmail.com> <CAA4WUYioRAOEbjU32yEaJuWDAySiZF=OfKXcF-8esqTP0uqwtQ@mail.gmail.com> <968F329C-B6CF-4129-B816-DC56C834A4A4@opengroupware.org>
Date: Sun, 17 Feb 2013 21:41:49 -0500
Message-ID: <CAMm+LwgksRiyMJz-rXrbZiuTzEYKSWNqHdBwW5mtWwUY+annLg@mail.gmail.com>
From: Phillip Hallam-Baker <hallam@gmail.com>
To: Helge Hess <helge.hess@opengroupware.org>
Cc: "William Chan (陈智昌)" <willchan@chromium.org>, James M Snell <jasnell@gmail.com>, Roberto Peon <grmocg@gmail.com>, HTTP Working Group <ietf-http-wg@w3.org>, Cyrus Daboo <cyrus@daboo.name>
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Subject: Re: Multi-GET, extreme compression?
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On Sun, Feb 17, 2013 at 8:38 PM, Helge Hess <helge.hess@opengroupware.org>wrote:

> On Feb 17, 2013, at 5:30 PM, William Chan (陈智昌) <willchan@chromium.org>
> wrote:
> > I'm having difficulty grokking this proposal. Can you describe more
> clearly how this would work with the web platform? Specifically, what kind
> of markup in a HTML document should cause a browser to use a MGET for a
> resource set as you describe it.
>
> ? e.g. <img>, <script>, CSS links etc.


Yes,



> > Also, how does this work for HTTP/1.X? Since we'll be living in a
> transitional world for awhile, I'd like to understand how this allows for
> HTTP/1.X semantics backwards compatibility.
>
> An old server would return a 405 when the BATCH comes in, then the client
> needs to switch to performing the operations individually.
>

An old server would never understand the HTTP/2 stream format required to
deliver the multi-responses.

So the only case where HTTP/1.1 would be an issue would be in a HTTP/2 to
HTTP/1 gateway and there the gateway would have to either refuse to do an
MGET or break it down into separate requests.


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