Re: [6lowapp] SIP and 6LoWPAN & Some General Suggestions

Carsten Bormann <cabo@tzi.org> Sat, 17 October 2009 22:07 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: 6lowapp@core3.amsl.com
Delivered-To: 6lowapp@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 17BD93A69A3 for <6lowapp@core3.amsl.com>; Sat, 17 Oct 2009 15:07:11 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.249
X-Spam-Level:
X-Spam-Status: No, score=-6.249 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HELO_EQ_DE=0.35, 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 CFNHUD9RuKli for <6lowapp@core3.amsl.com>; Sat, 17 Oct 2009 15:07:10 -0700 (PDT)
Received: from informatik.uni-bremen.de (mailhost.informatik.uni-bremen.de [IPv6:2001:638:708:30c9:209:3dff:fe00:7136]) by core3.amsl.com (Postfix) with ESMTP id 142CB3A69A4 for <6lowapp@ietf.org>; Sat, 17 Oct 2009 15:07:09 -0700 (PDT)
X-Virus-Scanned: amavisd-new at informatik.uni-bremen.de
Received: from smtp-fb3.informatik.uni-bremen.de (smtp-fb3.informatik.uni-bremen.de [134.102.224.120]) by informatik.uni-bremen.de (8.14.3/8.14.3) with ESMTP id n9HM75NW025342; Sun, 18 Oct 2009 00:07:05 +0200 (CEST)
Received: from [192.168.217.101] (p5489B1CE.dip.t-dialin.net [84.137.177.206]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by smtp-fb3.informatik.uni-bremen.de (Postfix) with ESMTP id 4D40FBA43; Sun, 18 Oct 2009 00:07:05 +0200 (CEST)
From: Carsten Bormann <cabo@tzi.org>
To: Shidan <shidan@gmail.com>
In-Reply-To: <429b380e0910171436r18305389pe922731b566486ee@mail.gmail.com>
References: <429b380e0910171400g83a10e4r5aff1be8d3c22c0a@mail.gmail.com> <429b380e0910171436r18305389pe922731b566486ee@mail.gmail.com>
Message-Id: <52968AFD-40BC-42F0-ACC7-9D22FA1E3CF9@tzi.org>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Content-Transfer-Encoding: 7bit
Mime-Version: 1.0 (Apple Message framework v936)
Date: Sun, 18 Oct 2009 00:07:04 +0200
X-Mailer: Apple Mail (2.936)
Cc: 6lowapp@ietf.org
Subject: Re: [6lowapp] SIP and 6LoWPAN & Some General Suggestions
X-BeenThere: 6lowapp@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Application protocols for constrained nodes and networks <6lowapp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/6lowapp>, <mailto:6lowapp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/6lowapp>
List-Post: <mailto:6lowapp@ietf.org>
List-Help: <mailto:6lowapp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/6lowapp>, <mailto:6lowapp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 17 Oct 2009 22:07:11 -0000

On Oct 17, 2009, at 23:36, Shidan wrote:

> SIGCOMP

SigComp (RFC 3320) is essentially a virtual machine for shipping  
decompression code to a peer.
Constrained nodes (as in 8 MHz 10K RAM) won't be able to run such a  
virtual machine, I'd say.

Actually, the whole idea of using complex encodings full of encoding  
alternatives (the fact that any of these are text-based is secondary  
to that) and then compressing them with a data compression algorithm  
is something that may be appropriate out of backwards compatibility,  
but not for a new design that emphasizes minimal code complexity.

Apart from this little nit (sorry, I was involved in RFC 3320), I'm  
looking forward to your draft.

BTW, right now the score is:

16 Oct 2009  draft-martocci-6lowapp-building-applications
16 Oct 2009  draft-shelby-6lowapp-encoding
14 Oct 2009  draft-schmitt-6lowapp-ipfix-ws
11 Sep 2009  draft-frank-6lowapp-chopan
13 Jul 2009  draft-bormann-6lowpan-6lowapp-problem

48 more hours to go...

Gruesse, Carsten