[Docs] [txt|pdf] [Tracker] [Email] [Diff1] [Diff2] [Nits]



Internet Engineering Task Force (IETF)                       T.McSweeney
Internet-Draft
Intended status: Informational
Expires: Nov 19,2020                                        May 22, 2020


                     draft-mcsweeney-drop-scheme-01
                     Defined Resource Operator (drop)
                     The 'drop' URI Scheme


Abstract

   This document describes the 'drop' Uniform Resource
   Identifier (URI) scheme.


Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 19, 2020.


Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may not be modified, and derivative works of it may not
be created, except to format it for publication as an RFC or to
translate it into languages other than English.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Scheme Definitions . . . . . . . . . . . . . . . . . . . . .  2
     2.1.  Demonstrable, New, Long-Lived Utility  . . . . . . . . .  2
     2.2.  Syntactic Compatibility . . . . . . . . . . . . . . . . . 2
     2.3.  Definitions and Operations  . . . . .  . . . . . . . . . .3
     2.4.  Internationalization and Character Encoding . . . . . . . 3
     2.5.  Interoperability Considerations . . . . . . . . . . . . . 4
   3.  The drop URI Scheme Registration Request. . . . . . . . . . . 4
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . . 4
   6.  Normative References  . . . . . . . . . . . . . . . . . . . . 4
   7.  Informative References. . . . . . . . . . . . . . . . . . . . 5
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . . 5
   Contributor . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . 5


1.  Introduction

   This document is provided to inform the internet community of the
'drop' URI scheme and to meet the required guidelines of a permanent
URI scheme. This scheme shortens the path to further unifying
communications by using public mechanisms of continuity for the pre-
resolution of private and public service integration.


2.  Scheme definitions and syntax

2.1.  Demonstrable, New, Long-Lived Utility

   Phone numbers and physical addresses are antiquated but still very
useful. But what is to say that they both can not be represented by the
same character string?  For any given person or business, it is simpler
to enter a single string into one's phone than what is currently an ever
growing list of communication method identifiers.  When an owner is able
to update contact information it requires no changes by another user's
contact list or database.  People, businesses, and machines generally
have a wide variety of, and specific uses for, different modes of
communication.  Where those modes of communication overlap, there should
also be consolidation.  The 'drop' scheme was created in a way to be
able to reuse current infrastructure making it easy to use and quick to
deploy.

2.2.  Syntactic Compatibility

   "While it is common for schemes to further delegate their
   substructure to the URI's owner, publishing independent standards
   that mandate particular forms of URI substructure is inappropriate,
   because that essentially usurps ownership.  [RFC7320] abstract

nonetheless....

   "The URI syntax defines a grammar that is a superset of all
   valid URIs, allowing an implementation to parse the common components
   of a URI reference without knowing the scheme-specific requirements
   of every possible identifier.  [RFC3986  abstract]

Section 3 of [RFC3986] defines the overall syntax for URIs and offers a
couple examples showing the component parts (1-5).  The scheme and path
components are required, though the path may be empty (no characters).


         foo://example.com:8042/over/there?name=ferret#nose
         \_/   \______________/\_________/ \_________/ \__/
          |           |            |          |          |
URI=  scheme(1)  authority(2)    path(3)    query(4)   fragment(5)
          |   _____________________|__
         / \ /                        \
         urn:example:animal:ferret:nose


The 'drop' URI does not use all 5 of the parse-able components
available to it.  Instead, it uses only the required scheme(1) and
path(3) components.  Previously registered URIs such as the 'tel'
[RFC3966] and 'geo' [RFC5870] schemes also use a limited number of
components.  But unlike these other schemes the 'drop' scheme uses the
number sign '#' as a general delimiter where typically a colon ":" is
found. The ":" and the "#" are two of the seven charcters catagorized as
general delimiters (gen-delims) in the "reserved" set.  The general
delimiters (gen-delims), described in Section 2.2 [RFC3986], can be used
to seperate generic URI components(1-5).  The "#" is defined as a
delimiter by the implementation-specific syntax of the 'drop' URI's
dereferencing algorithm.  The 'drop' scheme syntax is as follows:

drop-uri = drop "#" character string


            drop   #    fg34htx
            \__/  \_/   \_____/
             |     |       |
         <scheme>  |  <scheme-specific-part>
               <gen-delim>


Characters of the scheme-specific-part have not been limited.
The following are some examples of 'drop' URIs:

         drop#sd54g54  |  drop#34.56  |  drop#fgte8g-234.45

After the first step of resolution, the scheme-specific part of a 'drop'
URI becomes the subdomain portion of a FQDN where the resource(s) can be
located or further processing continued. It would look similar to
'sd54g54.dropexample.com'.  There will be only one second level domain
for http use. This subdomain characteristic gives it a global
uniqueness which adds value and prevents ambiguity.

Compared against other URI schemes, the 'drop' scheme's use of a number
sign makes the scheme in its entirety unique, including the
scheme-specific-part.  More so,  the scheme-specific-part can be user
generated to add an extra layer of uniquess.  Sending a fax to the same
digits as a phone call has been for around a long time proving that
being unique and being common can coexist.  The 'drop' scheme can extend
that commonality to the web and beyond.


2.3.  Definitions and Operations

Primarily functioning as a locator there are three ways to get to a
'drop' URI resource; http, SRV records, and private resolution.  Private
resolution is only used if the resource(s) can not be found using the
previous two methods.  This resource retrieval process utilizes the
Dynamic Delegation Discovery System [RFC3401].  Invoking the 'drop' URI
will cause a lookup for matching application information starting with
an A record [RFC1035], then on to Service Records [RFC2782], and then on
to other available records that may offer a new rule set for resolution.
As an example use case, when the 'drop' scheme is typed into the address
bar of a browser, the dns returns a FQDN to where the browser may then
go and retrieve a HTML document.  Similarly, the same scheme-specific
part can be used in a messaging address, or mapping location
application.  Reusability of a scheme-specific-part that has an output
of a hierarchical structure representing an administrative delegation
that translates into a domain name makes this scheme a perfect fit for
domain name system [RFC6950] section 3.3.  Users and owners define what
operations are available.  One user may have sip services enabled while
another may only let you go to a company's webpage.

Permanency of what is identified by the scheme-specific-part is not
guaranteed and is user specific.  Permanency of a specific
scheme-specific-part is not guaranteed to exist or that it will re-exist
after it had once existed. There may be a future need where the 'drop'
URI scheme will want to be used as a strict identifier so it would not
be fair to constrain the definition of this scheme in this document at
this time. Other future uses beyond what is commonly known of unique
subdomain creation should be anticipated for this 'drop' scheme.


2.4.  Internationalization and Character Encoding

   The 'drop' scheme name follows the syntax of Section 3.1 of [RFC3986]
which only allows for a limited number of characters (US-ASCII).
The scheme name is also sufficiently short and distinguishable to
avoid problems.  The 'drop' scheme name does not identify any
particular application and does not have any correspondence with a
particular service name.  Queries that come in non-ASCII encoding
must be allowed to go forward so that private resolution can continue
if A and SRV record lookups fail.

2.5.  Interoperability Considerations

   The scheme creator is not aware of any details regarding the scheme
that may impact interoperability.

3.    URI Scheme Registration Request

   Scheme name: drop

   Status:  permanent

   Applications/protocols that use this scheme name:
   http, sip, email

   Contact:
   Registering party:  Tim McSweeney <tim@dropnumber.com>
   Scheme creator: Parameter One

   Change controller:
   Either the registering party or someone who is verified to represent
   the scheme creator.

   References: Section 6 of this document


4.  IANA Considerations

   Expert Review" with an initial (optional)
   registration update request - permanent

5.  Security Considerations

Security is partly dependent on the resource being located
and the application being used for the locating.  Generally, security
concerns for this URI would come from the use of the URI and not
necessarily from the URI itself as [RFC3986] section 7 describes.
Examples are, domain spoofing, malicious redirection, domain hijacking,
and phishing attacks.


6.  Normative References

   [RFC3986]  Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
              Resource Identifier (URI): Generic Syntax", STD 66,
              RFC 3986, DOI 10.17487/RFC3986, January 2005,
              <http://www.rfc-editor.org/info/rfc3986>.

   [RFC7320] Nottingham, M., "URI Design and Ownership", BCP 190 RFC
              7320, DOI 10.17487/RFC7320, July 2014,
              <https://www.rfc-editor.org/inof/rfc7320>.

   [RFC2782]  Gulbrandsen, A., Vivie, P., and L. Esibov, "ADNS RR for
              specifying the location of services (DNS SRV)", RFC 2782,
              DOI 10.17487/RFC2782, February 2000,
              <https://www.rfc-editor.org/info/rfc2782>.

   [RFC1035]  Mockapetris, P., "Domain names - implementation and
              Specification", STD 13, RFC 1035, DOI 10.17487/RFC1035,
              November 1987, <https://www.rfc-editor.org/info/rfc1035>.

   [RFC3966]  Schulzrinne, H., "The tel URI for Telephone Numbers", RFC
              3966, DOI 10.17487/RFC3966, December 2004,
              <https://www.rfc-editor.org/info/rfc3966>.

   [RFC3401]  Mealling, M., "Dynamic Delegation Discovery System (DDDS)
              Part One: The Comprehensive DDDS", RFC 3401, DOI.17487/
              RFC3401, October 2002,
              <https://www.rfc-editor.org/info/rfc3401>.

   [RFC6950]  Peterson, J., Kolkman, O., Tschofenig, H., and B. Aboba,
              "Architectural Considerations, on Application Features in
              the DNS", RFC 6950, DOI 10.17487/RFC6950, October 2013,
              <https://www.rfc-editor.org/info/rfc6950>.

   [RFC5870]  Mayrhofer, A. and C. Spanring, "A Uniform Resource
              Identifier for Geographic Locations ('geo' URI)", RFC
              5870, DOI 10.17487/RFC5870, June 2010,
              <https://www.rfc-editor.org/info/rfc5870>.


7.  Informative References


Acknowledgements
A special thank you to those individuals that take action and
participate at all levels of the URI review process from the IETF, IESG,
IANA, ICANN.


Contributors
Henry S. Thompson
Martin J. Durst
Ted Hardie
Daniel R. Tobias


Authors' Addressess

   Tim McSweeney
   Parameter One
   950a Union Rd
   Suite #432
   West Seneca, NY 14224

   Comments are solicited and should be directed to Tim McSweeney at
   tim@dropnumber.com


Html markup produced by rfcmarkup 1.129d, available from https://tools.ietf.org/tools/rfcmarkup/