Re: Upgrade: tokens
"Roy T. Fielding" <fielding@gbiv.com> Mon, 21 September 2015 22:08 UTC
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From: "Roy T. Fielding" <fielding@gbiv.com>
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Date: Mon, 21 Sep 2015 15:04:27 -0700
Cc: Group HTTP Working <ietf-http-wg@w3.org>
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To: Stefan Eissing <stefan.eissing@greenbytes.de>
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Subject: Re: Upgrade: tokens
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> On Sep 21, 2015, at 5:06 AM, Stefan Eissing <stefan.eissing@greenbytes.de> wrote: > > Implemenation raised the question if tokens in Upgrade headers are to be treated case sensitive or not (for ALPN it is clearly defined). The current status > > - rfc7230 does not explicitly say so, but for other headers it does. So, one could say that Upgrade values are case-sensitive They are case-sensitive. > - rfc7230 reserves tokens of flavor "HTTP*" for itself and future versions > - the ALPN value "http/1.1" is seen in the wild ALPN has nothing to do with it. > - WebSocket RFC explicitly defines its token as case-insensitive And yet only registers one token. > I see only interop problems should HTTP insist on case sensitive values. Does 7230 need a fix here? No, interop problems will only occur when a string other than the registered token is sent. We should not encourage variations. ....Roy
- Upgrade: tokens Stefan Eissing
- Re: Upgrade: tokens Roy T. Fielding