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[whatwg] [hybi] WebSocket sub protocol name.

From: Fumitoshi Ukai <ukai@chromium.org>
Date: Mon, 7 Dec 2009 16:40:02 +0900
Message-ID: <de17d48e0912062340x7d3eed42t4f1f9cf95d482610@mail.gmail.com>
On Mon, Dec 7, 2009 at 4:26 PM, Ian Hickson <ian at hixie.ch> wrote:

> On Mon, 7 Dec 2009, Fumitoshi Ukai (??~\??~V~G?~U~O) wrote:
> > On Mon, Dec 7, 2009 at 3:21 PM, Ian Hickson <ian at hixie.ch> wrote:
> > > On Mon, 7 Dec 2009, Fumitoshi Ukai (?~\??~V~G?U~O) wrote:
> > > >
> > > > At 1.130 of "The Web Socket API", it adds the sub-protocol name must
> > > > be an ASCII string with no U+000A LINE FEED (LF) or U+000D CARRIAGE
> > > > RETURN (CR) characters in it.
> > > > But "The Web Socket protocol" 3.1 Parsing Web Socket URLs, says
> > > >    1.   If /protocol/ is specified but is either the empty string or
> > > >         contains characters that are not in the range U+0021 to
> U+007E,
> > > >         then fail this algorithm.
> > >
> > > Woops, that step is a copy-and-paste mistake from a past version. My
> > > apologies. I've removed that sentence; it should not have been
> > > present.
> >
> > Thanks for fixing.
> >
> > > Control characters are allowed (though using them would be silly).
> >
> > Why are control characters (except LF and CR) allowed?
>
> There doesn't seem to be a good reason to exclude them, and excluding them
> would lead to a more complicated processing model.


In HTTP, field-content is TEXT or  combinations of token, separators, and
quoted-string. TEXT, or token, separators excludes CTLs.
So, we must use quoted-string in WebSocket-Protocol: if protocol contains
CTLs?

And, why is it limited to ASCII instead of UTF-8?

-- 
ukai


> --
> Ian Hickson               U+1047E                )\._.,--....,'``.    fL
> http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
> Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
>
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