W3C home > Mailing lists > Public > ietf-http-wg@w3.org > July to September 2013

UTF-8 or ASCII Header Names?

From: James M Snell <jasnell@gmail.com>
Date: Tue, 13 Aug 2013 15:08:13 -0700
Message-ID: <CABP7RbcULoEWDfghcjMBu-=zVzGymsva0yatXCL52MmPgKmRpQ@mail.gmail.com>
To: "ietf-http-wg@w3.org" <ietf-http-wg@w3.org>
https://github.com/http2/http2-spec/issues/231

The current header compression spec allows for UTF-8 encoded header
names without any character restrictions. The main HTTP/2 spec,
however, states that header names are "strings of ASCII characters"
(also without specifying any character restrictions). We need to be
clearer.

Recommend that we specify in both the HTTP/2 and Header Compression
spec that header names MUST conform to:

    LOWERALPHA = %x61-7A
    header-name = "!" / "#" / "$" / "%" / "&" / "'" /
                  "*" / "+" / "-" / "." / "^" / "_" /
                  "`" / "|" / "~" / DIGIT / LOWERALPHA

Which is the all-lower-case equivalent to the header-name definition
currently in httpbis.
Received on Tuesday, 13 August 2013 22:09:00 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 17:14:14 UTC