Re: [hybi] Proposed way forward for WebSockets

"Anne van Kesteren" <annevk@opera.com> Sat, 31 July 2010 15:58 UTC

Return-Path: <annevk@opera.com>
X-Original-To: hybi@core3.amsl.com
Delivered-To: hybi@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 142FC3A69BF for <hybi@core3.amsl.com>; Sat, 31 Jul 2010 08:58:32 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.372
X-Spam-Level:
X-Spam-Status: No, score=-6.372 tagged_above=-999 required=5 tests=[AWL=-0.073, BAYES_00=-2.599, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3yTi8TnCaH9i for <hybi@core3.amsl.com>; Sat, 31 Jul 2010 08:58:31 -0700 (PDT)
Received: from smtp.opera.com (smtp.opera.com [213.236.208.81]) by core3.amsl.com (Postfix) with ESMTP id B26643A6831 for <hybi@ietf.org>; Sat, 31 Jul 2010 08:58:30 -0700 (PDT)
Received: from annevk-t60 (5355737B.cable.casema.nl [83.85.115.123]) (authenticated bits=0) by smtp.opera.com (8.14.3/8.14.3/Debian-5+lenny1) with ESMTP id o6VFwOON011108 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Sat, 31 Jul 2010 15:58:40 GMT
Content-Type: text/plain; charset="utf-8"; format="flowed"; delsp="yes"
To: "Martin J. Dürst" <duerst@it.aoyama.ac.jp>
References: <ECF0E97F-1DA2-4662-BA48-F68B65AA8179@apple.com> <4C4D66AF.9030905@opera.com> <Pine.LNX.4.64.1007270030120.24444@ps20323.dreamhostps.com> <20100727160806.GG23142@shareable.org> <op.vglgn4xh64w2qv@annevk-t60> <4C5136F1.3000704@it.aoyama.ac.jp>
Date: Sat, 31 Jul 2010 17:58:24 +0200
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
From: Anne van Kesteren <annevk@opera.com>
Organization: Opera Software ASA
Message-ID: <op.vgpta7s064w2qv@annevk-t60>
In-Reply-To: <4C5136F1.3000704@it.aoyama.ac.jp>
User-Agent: Opera Mail/10.70 (Linux)
Cc: hybi@ietf.org
Subject: Re: [hybi] Proposed way forward for WebSockets
X-BeenThere: hybi@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Server-Initiated HTTP <hybi.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/hybi>, <mailto:hybi-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/hybi>
List-Post: <mailto:hybi@ietf.org>
List-Help: <mailto:hybi-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/hybi>, <mailto:hybi-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 31 Jul 2010 15:58:32 -0000

On Thu, 29 Jul 2010 10:08:17 +0200, Martin J. Dürst  
<duerst@it.aoyama.ac.jp> wrote:
> On 2010/07/29 16:35, Anne van Kesteren wrote:
>> "Unrecognized fields can be safely ignored, and are probably either the
>> result of intermediaries injecting fields unrelated to the operation of
>> the WebSocket protocol, or clients that support future versions of the
>> protocol offering options that the server doesn't support."
>
> So, just to take an example, let's say it turned out that browsers sent  
> the User-Agent: header field, and some servers actually looked at it.
>
> Would your understanding of extensibility mean that we can explain this  
> as a (as of yet) not standardized future version/feature of WebSockets?  
> And that if it turned out that this were reasonably prevalent, and  
> remotely useful, somebody could write an RFC (as part of this WGs future  
> charter or as an individual submission) that would 'legalize' this  
> header.
>
> I think it would help at least my understanding of your extensibility  
> model if you could confirm/deny the above.

Yes, though preferably sending additional headers from the client is  
discussed with other parties beforehand on a relevant forum, such as  
hybi@ietf.org.


-- 
Anne van Kesteren
http://annevankesteren.nl/