rfc7553v4.txt   rfc7553.txt 
Internet Engineering Task Force (IETF) P. Faltstrom Internet Engineering Task Force (IETF) P. Faltstrom
Request for Comments: 7553 Netnod Request for Comments: 7553 Netnod
Category: Informational O. Kolkman Category: Informational O. Kolkman
ISSN: 2070-1721 ISOC ISSN: 2070-1721 ISOC
May 2015 June 2015
The Uniform Resource Identifier (URI) DNS Resource Record The Uniform Resource Identifier (URI) DNS Resource Record
Abstract Abstract
This document describes the already registered DNS resource record This document describes the already registered DNS resource record
(RR) type, called the Uniform Resource Identifier (URI) RR, that is (RR) type, called the Uniform Resource Identifier (URI) RR, that is
used for publishing mappings from hostnames to URIs. used for publishing mappings from hostnames to URIs.
Status of This Memo Status of This Memo
skipping to change at page 7, line 14 skipping to change at page 7, line 14
5.2. Relation to S-NAPTR 5.2. Relation to S-NAPTR
The URI resource record type is not a replacement for the S-NAPTR. The URI resource record type is not a replacement for the S-NAPTR.
It is instead an extension and the second step of the S-NAPTR It is instead an extension and the second step of the S-NAPTR
resolution can resolve a URI resource record instead of using SRV resolution can resolve a URI resource record instead of using SRV
records and yet another algorithm for how to use SRV records for the records and yet another algorithm for how to use SRV records for the
specific protocol. specific protocol.
$ORIGIN example.com. $ORIGIN example.com.
;; order pref flags ;; order pref flags
IN NAPTR 100 10 "D" "EM:ProtA" ( ; service IN NAPTR 100 10 "D" "EM:ProtA" ( ; service
"" ; regexp "" ; regexp
_http._tcp.example.com. ; replacement _http._tcp.example.com. ) ; replacement
_http._tcp IN URI 10 1 "http://www.example.com/path"
_http._tcp IN URI 10 1 "http://www.example.com/path"
5.3. Relation to U-NAPTR 5.3. Relation to U-NAPTR
The URI resource record type, together with S-NAPTR, can be viewed as The URI resource record type, together with S-NAPTR, can be viewed as
a replacement for U-NAPTR [RFC4848]. The URI resource record type is a replacement for U-NAPTR [RFC4848]. The URI resource record type is
only interesting when one know a base domain name, a protocol, and a only interesting when one know a base domain name, a protocol, and a
service so that one can compose the record to look up. NAPTR records service so that one can compose the record to look up. NAPTR records
of any kind are used to look up what services exist for a certain of any kind are used to look up what services exist for a certain
domain, which is one step before the URI resource record is used. domain, which is one step before the URI resource record is used.
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6 lines changed or deleted 7 lines changed or added

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