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Re: [hybi] Client offers invalid WS protocols, what must the server do? 101???

Iñaki Baz Castillo <ibc@aliax.net> Thu, 01 September 2011 07:18 UTC

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Date: Thu, 01 Sep 2011 09:20:21 +0200
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From: Iñaki Baz Castillo <ibc@aliax.net>
To: Brian <theturtle32@gmail.com>
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Cc: Hybi <hybi@ietf.org>
Subject: Re: [hybi] Client offers invalid WS protocols, what must the server do? 101???
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2011/8/31 Brian <theturtle32@gmail.com>:
> there's no
> acceptable use case for the server to accept the connection with a
> subprotocol not contained in the list of subprotocols requested by the
> client.  If the client requests a list of subprotocols, that is to be taken
> as the canonical list of the only subprotocols it knows how to speak.
>  Anything else will fail.  It should respond with a 4xx HTTP error code.

And such 4xx code should be good enough and specified for this case.
In this way, the WS client could warn the user (the humar user) in
some way in case the server rejects the connection with that 4xx code
("the version of your software is not updated" or whatever).



-- 
Iñaki Baz Castillo
<ibc@aliax.net>

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