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Re: Possible to support only HTTP/2 for "http" URIs? "https" URIs?

From: Martin Thomson <martin.thomson@gmail.com>
Date: Wed, 16 Jul 2014 10:25:40 -0700
Message-ID: <CABkgnnWjWPe8A6fH0HVCpw5OS-W60dBS7-=xsHNdb9H_-36AEQ@mail.gmail.com>
To: "K.Morgan@iaea.org" <K.Morgan@iaea.org>
Cc: HTTP Working Group <ietf-http-wg@w3.org>
Almost.  You should use Upgrade instead of Alt-Svc.

I've added this to the FAQ:
https://github.com/http2/http2.github.io/commit/346e7da2dcde0082351d33203a8b7cd9670ae619

On 16 July 2014 01:45,  <K.Morgan@iaea.org> wrote:
> *Is it possible to support just HTTP/2 for "http" URIs?*
>
> For example, consider the scenario where a server only wants to support
> clear-text HTTP version 2 (h2c) i.e. not allow/parse HTTP/1.x requests.
>
>
>
> I believe it has the two following options, but please correct me if I am
> wrong.
>
>
>
> a. "Upgrade"
>
> If a HTTP/1.x request arrives _with_ an "Upgrade: h2c" header, do the
> following: Send “101 switching protocols”.  Immediately send
> RST_STREAM/REFUSED_STREAM on stream 1 and _hope_ the client re-sends the
> request as an h2c request.
>
>
>
> b. "Alt-Svc"
>
> If a HTTP/1.x request arrives _without_ an "Upgrade: h2c" header, do the
> following: Send a "505 HTTP Version Not Supported" with an Alt-Svc header
> e.g. "Alt-Svc: h2c=82". It’s up to the client to switch to h2c at the
> specified port.
>
>
>
>
>
> *Is it possible to support just HTTP/2 for "https" URIs?*
>
> I believe it's possible to support only HTTP version 2 (h2) by simply only
> negotiating for "h2" and rejecting all other requests.
>
>
>
>
>
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Received on Wednesday, 16 July 2014 17:26:09 UTC

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