[whatwg] [hybi] WebSocket sub protocol name.

Yuzo Fujishima yuzo at google.com
Tue Dec 8 00:06:57 PST 2009

On Tue, Dec 8, 2009 at 4:59 PM, Ian Hickson <ian at hixie.ch> wrote:
> On Tue, 8 Dec 2009, Fumitoshi Ukai (榈~\椋兼~V~G鎫U~O) wrote:

>> protocol now accepts U+0020. Is it ok to use U+0020 only in /protocol/ ?
>> (e.g. new WebSocket("ws://example.com/", " "); )
>> It seems space is optional after colon in field of handshake message, how
>> can we distinguish U+0020 and U+0020 U+0020 ?

> The space isn't optional (both the client and the server are required to
> send it before the subprotocol name), it's just that the client will
> handle a missing space gracefully. Maybe we should remove that "feature",
> and require that the space be present, closing the connection otherwise?
> I don't feel strongly either way.

> Anyway, the point is that "WebSocket-Protocol: " is the empty string, and
> "WebSocket-Protocol:  " is a one-space protocol name.

Hi, Ian, let me confirm one thing: Empty string is not allowed for
subprotocol, is it?


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