Re: [hybi] Last Call: <draft-ietf-hybi-thewebsocketprotocol-10.txt> (The WebSocket protocol) to Proposed Standard

Dave Cridland <dave@cridland.net> Fri, 22 July 2011 09:51 UTC

Return-Path: <dave@cridland.net>
X-Original-To: ietf@ietfa.amsl.com
Delivered-To: ietf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 68FC421F8511 for <ietf@ietfa.amsl.com>; Fri, 22 Jul 2011 02:51:14 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.537
X-Spam-Level:
X-Spam-Status: No, score=-2.537 tagged_above=-999 required=5 tests=[AWL=0.062, BAYES_00=-2.599]
Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NEFIm2VawS+b for <ietf@ietfa.amsl.com>; Fri, 22 Jul 2011 02:51:13 -0700 (PDT)
Received: from peirce.dave.cridland.net (peirce.dave.cridland.net [IPv6:2001:470:1f09:882:2e0:81ff:fe29:d16a]) by ietfa.amsl.com (Postfix) with ESMTP id 7F0A621F84E3 for <ietf@ietf.org>; Fri, 22 Jul 2011 02:51:13 -0700 (PDT)
Received: from localhost (peirce.dave.cridland.net [127.0.0.1]) by peirce.dave.cridland.net (Postfix) with ESMTP id 94D351168087; Fri, 22 Jul 2011 10:51:10 +0100 (BST)
X-Virus-Scanned: Debian amavisd-new at peirce.dave.cridland.net
Received: from peirce.dave.cridland.net ([127.0.0.1]) by localhost (peirce.dave.cridland.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MJSOODCLzQSs; Fri, 22 Jul 2011 10:51:08 +0100 (BST)
Received: from puncture (puncture.dave.cridland.net [IPv6:2001:470:1f09:882:221:85ff:fe3f:1696]) by peirce.dave.cridland.net (Postfix) with ESMTPA id 2D6151168067; Fri, 22 Jul 2011 10:51:08 +0100 (BST)
Subject: Re: [hybi] Last Call: <draft-ietf-hybi-thewebsocketprotocol-10.txt> (The WebSocket protocol) to Proposed Standard
References: <20110711140229.17432.23519.idtracker@ietfa.amsl.com> <CALiegfk0zVVRBbOP4ugsVXKmcLnryujP6DZqF6Bu_dC2C3PpeQ@mail.gmail.com> <9031.1311082001.631622@puncture> <CALiegfk_GLAhAf=yEe6hYw2bwtxEwg9aJN+f0Bm9he5QgsRavA@mail.gmail.com> <CAP992=Ft6NwG+rbcuWUP0npwVNHY_znHmXmznBQO_krMo3RT6g@mail.gmail.com> <CALiegfmTWMP3GhS1-k2aoHHXkUkB+eWqV=2+BufuWVR1s2Z-EA@mail.gmail.com> <20110721163910.GA16854@1wt.eu> <CAP992=FrX5VxP2o0JLNoJs8nXXba7wbZ6RN9wBUYC0ZSN_wbAg@mail.gmail.com> <9031.1311270000.588511@puncture> <4E28C035.6020009@necom830.hpcl.titech.ac.jp>
In-Reply-To: <4E28C035.6020009@necom830.hpcl.titech.ac.jp>
MIME-Version: 1.0
Message-Id: <9031.1311328268.180517@puncture>
Date: Fri, 22 Jul 2011 10:51:08 +0100
From: Dave Cridland <dave@cridland.net>
To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>, IETF-Discussion <ietf@ietf.org>
Content-Type: text/plain; delsp="yes"; charset="us-ascii"; format="flowed"
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ietf>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 22 Jul 2011 09:51:14 -0000

On Fri Jul 22 01:11:33 2011, Masataka Ohta wrote:
> Dave Cridland wrote:
> 
> > It's proven impossible, despite effort, to retrofit SRV onto HTTP;
> 
> Where is a proof?

Sorry, I've a habit of using the word "proof" in the English (and  
indeed Welsh) sense of "test" or "trial", rather than the  
mathematical sense of the statement backed up by logic.

I should simply say that there have been attempts (I recall more than  
one draft), but the situation is sufficiently entrenched that these  
have gained no traction, in no small part because of the requirement  
for something close to a flag day.

1) There are no SRV records.

2) Therefore browsers do not support them.

3) Therefore you'd need to allow for A-lookup as fallback for the  
forseeable future.

4) Therefore there's no incentive for browsers to support SRV.

Dave.
-- 
Dave Cridland - mailto:dave@cridland.net - xmpp:dwd@dave.cridland.net
  - acap://acap.dave.cridland.net/byowner/user/dwd/bookmarks/
  - http://dave.cridland.net/
Infotrope Polymer - ACAP, IMAP, ESMTP, and Lemonade