[whatwg] [hybi] WebSocket sub protocol name.
ian at hixie.ch
Tue Dec 8 00:31:28 PST 2009
On Tue, 8 Dec 2009, Yuzo Fujishima wrote:
> 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?
The API will throw if the string is empty. However, if no protocol was
specified, and the server returns an empty WebSocket-Protocol, it's
ignored (as would any other WebSocket-Protocol value sent by the server in
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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