Using the Registration Data Access Protocol (RDAP) with HTTP
draft-ietf-weirds-using-http-03
Network Working Group A.L. Newton
Internet-Draft ARIN
Intended status: Standards Track B.J. Ellacott
Expires: September 28, 2013 APNIC
N. Kong
CNNIC
March 27, 2013
Using the Registration Data Access Protocol (RDAP) with HTTP
draft-ietf-weirds-using-http-03
Abstract
This document describes the usage of the Registration Data Access
Protocol (RDAP) using HTTP.
Status of This Memo
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This Internet-Draft will expire on September 28, 2013.
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1. Introduction
This document describes the usage of HTTP for Registration Data
Directory Services running on RESTful web servers. The goal of this
document is to tie together the usage patterns of HTTP into a common
profile applicable to the various types of Directory Services serving
Registration Data using RESTful styling. By giving the various
Directory Services common behavior, a single client is better able to
retrieve data from Directory Services adhering to this behavior.
In designing these common usage patterns, this draft endeavours to
satisfy requirements for a Registration Data Access Protocol (RDAP).
This draft also introduces an additional design consideration to
define a simple use of HTTP. Where complexity may reside, it is the
goal of this specification to place it upon the server and to keep
the client as simple as possible. A client implementation should be
possible using common operating system scripting tools.
This is the basic usage pattern for this protocol:
1. A client issues an HTTP query using GET. As an example, a query
for the network registration 192.0.2.0 might be http://
example.com/ip/192.0.2.0.
2. If the receiving server has the information for the query, it
examines the Accept header field of the query and returns a 200
response with a response entity appropriate for the requested
format.
3. If the receiving server does not have the information for the
query but does have knowledge of where the information can be
found, it will return a redirection response (3xx) with the
Location: header containing an HTTP URL pointing to the
information or another server known to have knowledge of the
location of the information. The client is expected to re-query
using that HTTP URL.
4. If the receiving server does not have the information being
requested and does not have knowledge of where the information
can be found, it should return a 404 response.
It is important to note that it is not the intent of this document to
redefine the meaning and semantics of HTTP. The purpose of this
document is to clarify the use of standard HTTP mechanisms for this
application.
2. Terminology
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The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
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