Re: [core] Tossing around URIs to use outside an application

Carsten Bormann <cabo@tzi.org> Sat, 22 May 2021 20:09 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: core@ietfa.amsl.com
Delivered-To: core@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 64E753A1BBC for <core@ietfa.amsl.com>; Sat, 22 May 2021 13:09:16 -0700 (PDT)
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, SPF_FAIL=0.001, SPF_HELO_NONE=0.001] autolearn=no autolearn_force=no
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 MtXNYAIsSMMs for <core@ietfa.amsl.com>; Sat, 22 May 2021 13:09:10 -0700 (PDT)
Received: from gabriel-2.zfn.uni-bremen.de (gabriel-2.zfn.uni-bremen.de [IPv6:2001:638:708:32::19]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7A3DC3A1BBB for <core@ietf.org>; Sat, 22 May 2021 13:09:09 -0700 (PDT)
Received: from [192.168.217.118] (p548dcc89.dip0.t-ipconnect.de [84.141.204.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-2.zfn.uni-bremen.de (Postfix) with ESMTPSA id 4FnZLS6DVRz315r; Sat, 22 May 2021 22:09:04 +0200 (CEST)
Content-Type: text/plain; charset="utf-8"
Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.6\))
From: Carsten Bormann <cabo@tzi.org>
In-Reply-To: <CAAzbHvbtysXRCe+E61BcjSFooVBqXcOYdTuAGr4ha=kYtfPuxg@mail.gmail.com>
Date: Sat, 22 May 2021 22:09:04 +0200
Cc: Christian Amsüss <christian@amsuess.com>, "core@ietf.org WG" <core@ietf.org>
X-Mao-Original-Outgoing-Id: 643406944.4733-b8fdff370f382fc9f222f746e307826d
Content-Transfer-Encoding: quoted-printable
Message-Id: <2D41F5BE-A83A-4C73-95D0-E2CD2B57FA5B@tzi.org>
References: <YKJltpQ9l6k4tseH@hephaistos.amsuess.com> <CAAzbHvbtysXRCe+E61BcjSFooVBqXcOYdTuAGr4ha=kYtfPuxg@mail.gmail.com>
To: Klaus Hartke <hartke@projectcool.de>
X-Mailer: Apple Mail (2.3608.120.23.2.6)
Archived-At: <https://mailarchive.ietf.org/arch/msg/core/zVAWeKSIrM7q1u6r0N31KuESaKo>
Subject: Re: [core] Tossing around URIs to use outside an application
X-BeenThere: core@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Constrained RESTful Environments \(CoRE\) Working Group list" <core.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/core>, <mailto:core-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/core/>
List-Post: <mailto:core@ietf.org>
List-Help: <mailto:core-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/core>, <mailto:core-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 22 May 2021 20:09:17 -0000

I think we are reinventing link relationships, just better.

You can’t really “toss” a URI, you are tossing a document (that contains the URI).
If that document does not specify a link relationship (a purpose), you need application state going along with that or you don’t know what to do with the URI.
If that document does contain a link relationship (and possibly further parameters), these become part of the application state, hopefully together with the provenance of that tossed document.

Grüße, Carsten