Re: [art] [Technical Errata Reported] RFC7578 (5616)

Larry Masinter <LMM@acm.org> Mon, 04 February 2019 21:38 UTC

Return-Path: <masinter@gmail.com>
X-Original-To: art@ietfa.amsl.com
Delivered-To: art@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2BAE3126DBF for <art@ietfa.amsl.com>; Mon, 4 Feb 2019 13:38:48 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.898
X-Spam-Level:
X-Spam-Status: No, score=-1.898 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Vejn_QxRputG for <art@ietfa.amsl.com>; Mon, 4 Feb 2019 13:38:46 -0800 (PST)
Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id EBC1C124B0C for <art@ietf.org>; Mon, 4 Feb 2019 13:38:45 -0800 (PST)
Received: by mail-pg1-x532.google.com with SMTP id d9so515486pgl.1 for <art@ietf.org>; Mon, 04 Feb 2019 13:38:45 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:references:in-reply-to:subject:date:message-id :mime-version:content-transfer-encoding:thread-index :content-language; bh=9gL/JUjuxL/J87d8VozRIoSHwNJuYBKHuZbJ+2hTsjY=; b=Pu1jbu6excryWXqOLJWuVHJiWKn2IVql9COZDfUmp72WFQ62x65EifgV4ZQUDVpinK uND1r2Y3/ANDYtZsXdoOe71iKCPBUEiCHiWBSRcu9zr12pIaJ7lmf8jqQgDubb3ecIqT UxHDEsAANS7NHsyWFsA8zAj2vU0Haz97tmrdmrW65B0tQk+djjlyhQBPz+8hq90mPGka cXm6TOZWnq1E8O0SPdVUjXFmHeTjOV8+brKEQKliLSouHf7/AvTMjeqv1Afz7KW25n6P VoWvSalSvbNN9BrtxgVOicHqb5DLaQOtq9s1O8JtGRXKeGIJV3MNFl6gRoA1EwC9hGKv LzOg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:references:in-reply-to:subject :date:message-id:mime-version:content-transfer-encoding:thread-index :content-language; bh=9gL/JUjuxL/J87d8VozRIoSHwNJuYBKHuZbJ+2hTsjY=; b=CtxgdQ0WHBCHiumgnMeU0Wm3WML8JY4Py7XQUXrU9S4OFD8sR+C1K8514qW3lids1i 7uuk5oO49Pb6olCnq3DJ2YjFrBvAG3mnuW2vJmJ4iFY0TE5atBDc6/GFCsvU8HlRe/wa nrVUU6JBmu3Bujv1Zna9cXrYlH6dEsQE+Bz9ZgjZJ/6Yx5b1s1yUg0NWWR80n/U1vLdb 6D8/PZck8rAzkUa91LRjLFYzgn7zQ3GygGQDMamf2p+KVFX3IJYREvOwK3dra9/KDnec 19kgeaYt7WfQLrJfd3dDbSRBA55UU44h4nqhYSQV30XJ5QsdUS+etTwcfJOBosyXnh7X Ht/w==
X-Gm-Message-State: AHQUAuZpTntGg6b/4oSh9ESYrlb0rG1LFd+VpsU7wRaagHBXiZVTMBO0 JLH5SLrzWkN6gyG3GMqdjQM2dvp9cg0=
X-Google-Smtp-Source: AHgI3IYK3U4eMdE8dqw51wiAH7RAwJXzsMUpbDywVmqmhNTTlO2RmDoNZdnDSxuPSQQ35qzndkX0tA==
X-Received: by 2002:a63:4744:: with SMTP id w4mr1358408pgk.110.1549316324974; Mon, 04 Feb 2019 13:38:44 -0800 (PST)
Received: from TVPC (c-67-169-101-78.hsd1.ca.comcast.net. [67.169.101.78]) by smtp.gmail.com with ESMTPSA id 19sm1474360pfs.108.2019.02.04.13.38.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Feb 2019 13:38:43 -0800 (PST)
Sender: Larry Masinter <masinter@gmail.com>
From: Larry Masinter <LMM@acm.org>
X-Google-Original-From: "Larry Masinter" <lmm@acm.org>
To: "'John Levine'" <johnl@taugh.com>, <art@ietf.org>
Cc: <worley@ariadne.com>
References: <87va251q01.fsf@hobgoblin.ariadne.com> <20190131182019.C9AAB200D8F70C@ary.qy>
In-Reply-To: <20190131182019.C9AAB200D8F70C@ary.qy>
Date: Mon, 4 Feb 2019 13:38:43 -0800
Message-ID: <036401d4bcd2$00ef16d0$02cd4470$@acm.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Outlook 16.0
Thread-Index: AQIqTJvtHUTeNv//+blI5gKgcNdKc6UlCWGQ
Content-Language: en-us
Archived-At: <https://mailarchive.ietf.org/arch/msg/art/R5sg_vDtMri3KSLjc2Jym5jy4qg>
Subject: Re: [art] [Technical Errata Reported] RFC7578 (5616)
X-BeenThere: art@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Applications and Real-Time Area Discussion <art.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/art>, <mailto:art-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/art/>
List-Post: <mailto:art@ietf.org>
List-Help: <mailto:art-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/art>, <mailto:art-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Feb 2019 21:38:48 -0000

> In article <87va251q01.fsf@hobgoblin.ariadne.com> you write:
> >> Section 4.7 says that "Senders SHOULD NOT generate any parts with a
> Content-Transfer-Encoding header field."
> >
> >The "Original Text" gives an example, which seems to me to be correct.
> >However, as the erratum notes, the example violates the SHOULD NOT in
> >section 4.7.  And as section 4.7 notes, "Currently, no deployed
> >implementations that send such bodies have been discovered.",
> >suggesting that the example is not representative of current practice.
> >
> >But the proposed "Corrected Text" is itself incorrect, in that the
> >Content-Transfer-Encoding header is still present -- the given body
> >isn't valid for quoted-printable.
> 
> I'd leave it alone.  The example makes sense as is -- we don't encourage
> encoding the data but if you have to, here's how to do it.
> 
> At most hold for update to either redo the example with no encoding or add
> a warning about why this is a bad example.
> 

+1

Larry
--
https://LarryMasinter.net