RFC 8590 PROPOSED STANDARD EPP · REGISTRIES · NOTIFICATIONS
EPP Change Poll: Change Poll Extension for the Extensible Provisioning Protocol (EPP)
How an EPP server tells a registrar what changed on its objects, by whom and why, when the registrar did not make the change.
RFC EDITOR
Gould, J. and K. Feher, "Change Poll Extension for the Extensible Provisioning Protocol (EPP)", RFC 8590, DOI 10.17487/RFC8590, May 2019, <https://www.rfc-editor.org/info/rfc8590>.
BIBTEX
@misc{rfc8590,
series = {Request for Comments},
number = 8590,
howpublished = {RFC 8590},
publisher = {RFC Editor},
doi = {10.17487/RFC8590},
url = {https://www.rfc-editor.org/info/rfc8590},
author = {J. Gould and K. Feher},
title = {{Change Poll Extension for the Extensible Provisioning Protocol (EPP)}},
pagetotal = 20,
year = 2019,
month = may,
} RFC text
Contents
Internet Engineering Task Force (IETF) J. Gould
Request for Comments: 8590 VeriSign, Inc.
Category: Standards Track K. Feher
ISSN: 2070-1721 Neustar
May 2019
Change Poll Extension for the Extensible Provisioning Protocol (EPP)
Abstract
This document describes an Extensible Provisioning Protocol (EPP)
extension for notifying clients of operations on client-sponsored
objects that were not initiated by the client through EPP. These
operations may include contractual or policy requirements including,
but not limited to, regular batch processes, customer support
actions, Uniform Domain-Name Dispute-Resolution Policy (UDRP) or
Uniform Rapid Suspension (URS) actions, court-directed actions, and
bulk updates based on customer requests. Since the client is not
directly involved or knowledgable of these operations, the extension
is used along with an EPP object mapping to provide the resulting
state of the postoperation object, and optionally a preoperation
object, with the operation metadata of what, when, who, and why.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8590.
Copyright Notice
Copyright (c) 2019 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Conventions Used in This Document . . . . . . . . . . . . 3
2. Object Attributes . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Operation . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. State . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3. Who . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4. Dates and Times . . . . . . . . . . . . . . . . . . . . . 5
3. EPP Command Mapping . . . . . . . . . . . . . . . . . . . . . 6
3.1. EPP Query Commands . . . . . . . . . . . . . . . . . . . 6
3.1.1. EPP <check> Command . . . . . . . . . . . . . . . . . 6
3.1.2. EPP <info> Command . . . . . . . . . . . . . . . . . 6
3.1.3. EPP <transfer> Command . . . . . . . . . . . . . . . 14
3.2. EPP Transform Commands . . . . . . . . . . . . . . . . . 14
3.2.1. EPP <create> Command . . . . . . . . . . . . . . . . 14
3.2.2. EPP <delete> Command . . . . . . . . . . . . . . . . 14
3.2.3. EPP <renew> Command . . . . . . . . . . . . . . . . . 14
3.2.4. EPP <transfer> Command . . . . . . . . . . . . . . . 14
3.2.5. EPP <update> Command . . . . . . . . . . . . . . . . 14
4. Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1. Change Poll Extension Schema . . . . . . . . . . . . . . 15
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
5.1. XML Namespace . . . . . . . . . . . . . . . . . . . . . . 18
5.2. EPP Extension Registry . . . . . . . . . . . . . . . . . 18
6. Security Considerations . . . . . . . . . . . . . . . . . . . 19
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1. Normative References . . . . . . . . . . . . . . . . . . 19
7.2. Informative References . . . . . . . . . . . . . . . . . 20
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 20
1. Introduction
This document describes an extension mapping for version 1.0 of the
Extensible Provisioning Protocol (EPP) [RFC5730]. This mapping, an
extension to EPP object mappings like the EPP domain name mapping
[RFC5731], is used to notify clients of operations they are not
directly involved in, on objects that the client sponsors. It is up
to server policy to determine what transform operations and clients
to notify. Using this extension, clients can more easily keep their
systems in sync with the objects stored in the server. When a change
occurs that a client needs to be notified of, a poll message can be
inserted by the server for consumption by the client using the EPP
<poll> command and response defined in [RFC5730]. The extension
supports including a "before" operation poll message and an "after"
operation poll message. The extension only extends the EPP <poll>
response in [RFC5730] and does not extend the EPP <poll> command.
Please refer to [RFC5730] for information and examples of the EPP
<poll> command.
1.1. Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
XML is case sensitive. Unless stated otherwise, XML specifications
and examples provided in this document MUST be interpreted in the
character case presented in order to develop a conforming
implementation.
In examples, "C:" represents lines sent by a protocol client, and
"S:" represents lines returned by a protocol server. Indentation and
white space in examples are provided only to illustrate element
relationships and are not a REQUIRED feature of this protocol.
The XML namespace prefix "changePoll" is used for the namespace
"urn:ietf:params:xml:ns:changePoll-1.0", but implementations MUST NOT
depend on it; instead, they should employ a proper namespace-aware
XML parser and serializer to interpret and output the XML documents.
2. Object Attributes
This extension adds additional elements to EPP object mappings like
the EPP domain name mapping [RFC5731]. Only those new elements are
described here.
2.1. Operation
An operation consists of any transform operation that impacts objects
that the client sponsors and should be notified of. The
<changePoll:operation> element defines the operation. The OPTIONAL
"op" attribute is an identifier, represented in the 7-bit US-ASCII
character set defined in [RFC20], that is used to define a sub-
operation or the name of a "custom" operation. The enumerated list
of <changePoll:operation> values is:
"create": Create operation as defined in [RFC5730].
"delete": Delete operation as defined in [RFC5730]. If the delete
operation results in an immediate purge of the object, then the
"op" attribute MUST be set to "purge".
"renew": Renew operation as defined in [RFC5730].
"transfer": Transfer operation as defined in [RFC5730] that MUST set
the "op" attribute with one of the possible transfer-type values;
these include "request", "approve", "cancel", or "reject".
"update": Update operation as defined in [RFC5730].
"restore": Restore operation as defined in [RFC3915] that MUST set
the "op" attribute with one of the possible restore-type values;
these include "request" or "report".
"autoRenew": Auto renew operation executed by the server.
"autoDelete": Auto delete operation executed by the server. If the
"autoDelete" operation results in an immediate purge of the
object, then the "op" attribute MUST be set to "purge".
"autoPurge": Auto purge operation executed by the server when
removing the object after it has had the status "pendingDelete".
"custom": Custom operation that MUST set the "op" attribute with the
custom operation name. The custom operations supported are up to
server policy.
2.2. State
The state attribute reflects the state of the object "before" or
"after" the operation. The state is defined using the OPTIONAL
"state" attribute of the <changePoll:changeData> element, with the
possible values "before" or "after" and a default value of "after".
The server MAY support both the "before" state and the "after" state
of the operation by using one poll message for the "before" state and
one poll message for the "after" state. The "before" state poll
message MUST be inserted into the message queue prior to the "after"
state poll message.
For operations in Section 2.1 that don't have an "after" state, the
server MUST use the "before" state poll message. For example, for
the "delete" operation with the "op" attribute set to "purge", or the
"autoPurge" operation, the server includes the state of the object
prior to being purged in the "before" state poll message.
For operations in Section 2.1 that don't have a "before" state, the
server MUST use the "after" state poll message. For example, for the
"create" operation, the server includes the state of the object after
creation in the "after" state poll message.
2.3. Who
The <changePoll:who> element defines who executed the operation, for
audit purposes. It is a free-form value that is meant strictly for
audit purposes and not to drive client-side logic. The scheme used
for the possible set of <changePoll:who> element values is up to
server policy. The server MAY identify the <changePoll:who> element
value based on:
"Identifier": Unique user identifier of the user that executed the
operation. An example is "ClientX".
"Name": Name of the user that executed the operation. An example is
"John Doe".
"Role": Role of the user that executed operation. An example is
"CSR" for a Customer Support Representative or "Batch" for a
server batch.
2.4. Dates and Times
Date and time attribute values MUST be represented in Universal
Coordinated Time (UTC) using the Gregorian calendar. The extended
date-time form using uppercase "T" and "Z" characters defined in
[W3C.REC-xmlschema-2-20041028] MUST be used to represent date-time
values, as XML Schema does not support truncated date-time forms or
lowercase "T" and "Z" characters.
3. EPP Command Mapping
A detailed description of the EPP syntax and semantics can be found
in the EPP core protocol specification [RFC5730].
3.1. EPP Query Commands
EPP provides three commands to retrieve object information: <check>
to determine if an object is known to the server, <info> to retrieve
detailed information associated with an object, and <transfer> to
retrieve object-transfer status information.
3.1.1. EPP <check> Command
This extension does not add any elements to the EPP <check> command
or <check> response described in [RFC5730].
3.1.2. EPP <info> Command
This extension does not add any elements to the EPP <info> command
described in [RFC5730].
This extension adds operational detail of EPP object-mapping
operations (Section 2.1) to an EPP poll response, as described in
[RFC5730]. It is an extension of the EPP object-mapping info
response. Any transform operation to an object defined in an EPP
object mapping by a client other than the sponsoring client MAY
result in extending the <info> response of the object for inserting
an EPP poll message with the operation detail. The sponsoring client
will then receive the state of the object with operation detail like
what, who, when, and why the object was changed. The
<changePoll:changeData> element contains the operation detail along
with an indication of whether the object reflects the state before or
after the operation as defined in Section 2.2. The
<changePoll:changeData> element includes the operation detail with
the following child elements:
<changePoll:operation>: Transform operation executed on the object,
as defined in Section 2.1.
<changePoll:date>: Date and time when the operation was executed.
<changePoll:svTRID>: Server transaction identifier of the operation.
<changePoll:who>: Who executed the operation, as defined in
Section 2.3.
<changePoll:caseId>: OPTIONAL case identifier associated with the
operation. The required "type" attribute defines the type of
case. The OPTIONAL "name" attribute is an identifier,
represented in the 7-bit US-ASCII character set defined in
[RFC20], that is used to define the name of the "custom" case
type. The enumerated list of case types is:
udrp: A Uniform Domain-Name Dispute-Resolution Policy (UDRP)
case.
urs: A Uniform Rapid Suspension (URS) case.
custom: A custom case that is defined using the "name"
attribute.
<changePoll:reason>: OPTIONAL reason for executing the operation.
If present, this element contains the server-specific text to
help explain the reason the operation was executed. This text
MUST be represented in the response language previously
negotiated with the client; an OPTIONAL "lang" attribute MAY be
present to identify the language if the negotiated value is
something other than the default value of "en" (English).
The following is an example poll <info> response with the
<changePoll:changeData> extension for a URS lock transaction on the
domain.example domain name, with the "before" state. The "before"
state is reflected in the <resData> block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg lang="en-US">
S: Command completed successfully; ack to dequeue</msg>
S: </result>
S: <msgQ id="201" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry initiated update of domain.</msg>
S: </msgQ>
S: <resData>
S: <domain:infData
S: xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
S: <domain:name>domain.example</domain:name>
S: <domain:roid>EXAMPLE1-REP</domain:roid>
S: <domain:status s="ok"/>
S: <domain:registrant>jd1234</domain:registrant>
S: <domain:contact type="admin">sh8013</domain:contact>
S: <domain:contact type="tech">sh8013</domain:contact>
S: <domain:clID>ClientX</domain:clID>
S: <domain:crID>ClientY</domain:crID>
S: <domain:crDate>2012-04-03T22:00:00.0Z</domain:crDate>
S: <domain:exDate>2014-04-03T22:00:00.0Z</domain:exDate>
S: </domain:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0"
S: state="before">
S: <changePoll:operation>update</changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z</changePoll:date>
S: <changePoll:svTRID>12345-XYZ</changePoll:svTRID>
S: <changePoll:who>URS Admin</changePoll:who>
S: <changePoll:caseId type="urs">urs123</changePoll:caseId>
S: <changePoll:reason>URS Lock</changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
The following is an example poll <info> response with the
<changePoll:changeData> extension for a URS lock transaction on the
domain.example domain name, with the "after" state. The "after"
state is reflected in the <resData> block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg lang="en-US">
S: Command completed successfully; ack to dequeue</msg>
S: </result>
S: <msgQ id="202" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry initiated update of domain.</msg>
S: </msgQ>
S: <resData>
S: <domain:infData
S: xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
S: <domain:name>domain.example</domain:name>
S: <domain:roid>EXAMPLE1-REP</domain:roid>
S: <domain:status s="serverUpdateProhibited"/>
S: <domain:status s="serverDeleteProhibited"/>
S: <domain:status s="serverTransferProhibited"/>
S: <domain:registrant>jd1234</domain:registrant>
S: <domain:contact type="admin">sh8013</domain:contact>
S: <domain:contact type="tech">sh8013</domain:contact>
S: <domain:clID>ClientX</domain:clID>
S: <domain:crID>ClientY</domain:crID>
S: <domain:crDate>2012-04-03T22:00:00.0Z</domain:crDate>
S: <domain:upID>ClientZ</domain:upID>
S: <domain:upDate>2013-10-22T14:25:57.0Z</domain:upDate>
S: <domain:exDate>2014-04-03T22:00:00.0Z</domain:exDate>
S: </domain:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0"
S: state="after">
S: <changePoll:operation>update</changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z</changePoll:date>
S: <changePoll:svTRID>12345-XYZ</changePoll:svTRID>
S: <changePoll:who>URS Admin</changePoll:who>
S: <changePoll:caseId type="urs">urs123</changePoll:caseId>
S: <changePoll:reason>URS Lock</changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
The following is an example poll <info> response with the
<changePoll:changeData> extension for a custom "sync" operation on
the domain.example domain name, with the default "after" state. The
"after" state is reflected in the <resData> block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg>Command completed successfully; ack to dequeue</msg>
S: </result>
S: <msgQ id="201" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry initiated Sync of Domain Expiration Date</msg>
S: </msgQ>
S: <resData>
S: <domain:infData
S: xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
S: <domain:name>domain.example</domain:name>
S: <domain:roid>EXAMPLE1-REP</domain:roid>
S: <domain:status s="ok"/>
S: <domain:registrant>jd1234</domain:registrant>
S: <domain:contact type="admin">sh8013</domain:contact>
S: <domain:contact type="tech">sh8013</domain:contact>
S: <domain:clID>ClientX</domain:clID>
S: <domain:crID>ClientY</domain:crID>
S: <domain:crDate>2012-04-03T22:00:00.0Z</domain:crDate>
S: <domain:upID>ClientZ</domain:upID>
S: <domain:upDate>2013-10-22T14:25:57.0Z</domain:upDate>
S: <domain:exDate>2014-04-03T22:00:00.0Z</domain:exDate>
S: </domain:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0">
S: <changePoll:operation op="sync">custom
S: </changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z</changePoll:date>
S: <changePoll:svTRID>12345-XYZ</changePoll:svTRID>
S: <changePoll:who>CSR</changePoll:who>
S: <changePoll:reason lang="en">Customer sync request
S: </changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
The following is an example poll <info> response with the
<changePoll:changeData> extension for a "delete" operation on the
domain.example domain name that is immediately purged, with the
"before" state. The "before" state is reflected in the <resData>
block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg>Command completed successfully; ack to dequeue</msg>
S: </result>
S: <msgQ id="200" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry initiated delete of
S: domain resulting in immediate purge.</msg>
S: </msgQ>
S: <resData>
S: <domain:infData
S: xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
S: <domain:name>domain.example</domain:name>
S: <domain:roid>EXAMPLE1-REP</domain:roid>
S: <domain:clID>ClientX</domain:clID>
S: </domain:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0"
S: state="before">
S: <changePoll:operation op="purge">delete
S: </changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z
S: </changePoll:date>
S: <changePoll:svTRID>12345-XYZ
S: </changePoll:svTRID>
S: <changePoll:who>ClientZ
S: </changePoll:who>
S: <changePoll:reason>Court order
S: </changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
The following is an example poll <info> response with the
<changePoll:changeData> extension for an "autoPurge" operation on the
domain.example domain name that previously had the "pendingDelete"
status, with the "before" state. The "before" state is reflected in
the <resData> block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg>Command completed successfully; ack to dequeue
S: </msg>
S: </result>
S: <msgQ id="200" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry purged domain with pendingDelete status.
S: </msg>
S: </msgQ>
S: <resData>
S: <domain:infData
S: xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
S: <domain:name>domain.example</domain:name>
S: <domain:roid>EXAMPLE1-REP</domain:roid>
S: <domain:status s="pendingDelete"/>
S: <domain:clID>ClientX</domain:clID>
S: </domain:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0"
S: state="before">
S: <changePoll:operation>autoPurge
S: </changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z
S: </changePoll:date>
S: <changePoll:svTRID>12345-XYZ
S: </changePoll:svTRID>
S: <changePoll:who>Batch
S: </changePoll:who>
S: <changePoll:reason>Past pendingDelete 5 day period
S: </changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
The following is an example poll <info> response with the
<changePoll:changeData> extension for an "update" operation on the
ns1.domain.example host, with the default "after" state. The "after"
state is reflected in the <resData> block:
S:<?xml version="1.0" encoding="UTF-8"?>
S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
S: <response>
S: <result code="1301">
S: <msg>Command completed successfully; ack to dequeue</msg>
S: </result>
S: <msgQ id="201" count="1">
S: <qDate>2013-10-22T14:25:57.0Z</qDate>
S: <msg>Registry initiated update of host.</msg>
S: </msgQ>
S: <resData>
S: <host:infData
S: xmlns:host="urn:ietf:params:xml:ns:host-1.0">
S: <host:name>ns1.domain.example</host:name>
S: <host:roid>NS1_EXAMPLE1-REP</host:roid>
S: <host:status s="linked"/>
S: <host:status s="serverUpdateProhibited"/>
S: <host:status s="serverDeleteProhibited"/>
S: <host:addr ip="v4">192.0.2.2</host:addr>
S: <host:addr ip="v6">2001:db8:0:0:1:0:0:1</host:addr>
S: <host:clID>ClientX</host:clID>
S: <host:crID>ClientY</host:crID>
S: <host:crDate>2012-04-03T22:00:00.0Z</host:crDate>
S: <host:upID>ClientY</host:upID>
S: <host:upDate>2013-10-22T14:25:57.0Z</host:upDate>
S: </host:infData>
S: </resData>
S: <extension>
S: <changePoll:changeData
S: xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0">
S: <changePoll:operation>update</changePoll:operation>
S: <changePoll:date>2013-10-22T14:25:57.0Z</changePoll:date>
S: <changePoll:svTRID>12345-XYZ</changePoll:svTRID>
S: <changePoll:who>ClientZ</changePoll:who>
S: <changePoll:reason>Host Lock</changePoll:reason>
S: </changePoll:changeData>
S: </extension>
S: <trID>
S: <clTRID>ABC-12345</clTRID>
S: <svTRID>54321-XYZ</svTRID>
S: </trID>
S: </response>
S:</epp>
3.1.3. EPP <transfer> Command
This extension does not add any elements to the EPP <transfer> query
command or <transfer> response described in the [RFC5730].
3.2. EPP Transform Commands
EPP provides five commands to transform objects: <create> to create
an instance of an object, <delete> to delete an instance of an
object, <renew> to extend the validity period of an object,
<transfer> to manage object-sponsorship changes, and <update> to
change information associated with an object.
3.2.1. EPP <create> Command
This extension does not add any elements to the EPP <create> command
or <create> response described in [RFC5730].
3.2.2. EPP <delete> Command
This extension does not add any elements to the EPP <delete> command
or <delete> response described in [RFC5730].
3.2.3. EPP <renew> Command
This extension does not add any elements to the EPP <renew> command
or <renew> response described in [RFC5730].
3.2.4. EPP <transfer> Command
This extension does not add any elements to the EPP <transfer>
command or <transfer> response described in [RFC5730].
3.2.5. EPP <update> Command
This extension does not add any elements to the EPP <update> command
or <update> response described in [RFC5730].
4. Formal Syntax
One schema is presented here: the EPP Change Poll Extension schema.
The formal syntax presented here is a complete schema representation
of the object mapping suitable for automated validation of EPP XML
instances. The BEGIN and END tags are not part of the schema; they
are used to note the beginning and ending of the schema for URI
registration purposes.
4.1. Change Poll Extension Schema
BEGIN
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="urn:ietf:params:xml:ns:changePoll-1.0"
xmlns:eppcom="urn:ietf:params:xml:ns:eppcom-1.0"
xmlns:epp="urn:ietf:params:xml:ns:epp-1.0"
xmlns:changePoll="urn:ietf:params:xml:ns:changePoll-1.0"
xmlns="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
<!--
Import common element types.
-->
<import namespace="urn:ietf:params:xml:ns:eppcom-1.0"/>
<import namespace="urn:ietf:params:xml:ns:epp-1.0"/>
<annotation>
<documentation>
Extensible Provisioning Protocol v1.0
Change Poll Mapping Schema.
</documentation>
</annotation>
<!--
Change element.
-->
<element name="changeData" type="changePoll:changeDataType"/>
<!--
Attributes associated with the change.
-->
<complexType name="changeDataType">
<sequence>
<element name="operation" type="changePoll:operationType"/>
<element name="date" type="dateTime"/>
<element name="svTRID" type="epp:trIDStringType"/>
<element name="who" type="changePoll:whoType"/>
<element name="caseId" type="changePoll:caseIdType"
minOccurs="0"/>
<element name="reason" type="eppcom:reasonType"
minOccurs="0"/>
</sequence>
<attribute name="state" type="changePoll:stateType"
default="after"/>
</complexType>
<!--
Enumerated list of operations, with extensibility via "custom".
-->
<simpleType name="operationEnum">
<restriction base="token">
<enumeration value="create"/>
<enumeration value="delete"/>
<enumeration value="renew"/>
<enumeration value="transfer"/>
<enumeration value="update"/>
<enumeration value="restore"/>
<enumeration value="autoRenew"/>
<enumeration value="autoDelete"/>
<enumeration value="autoPurge"/>
<enumeration value="custom"/>
</restriction>
</simpleType>
<!--
Enumerated state of the object in the poll message.
-->
<simpleType name="stateType">
<restriction base="token">
<enumeration value="before"/>
<enumeration value="after"/>
</restriction>
</simpleType>
<!--
Transform operation type
-->
<complexType name="operationType">
<simpleContent>
<extension base="changePoll:operationEnum">
<attribute name="op" type="token"/>
</extension>
</simpleContent>
</complexType>
<!--
Case identifier type
-->
<complexType name="caseIdType">
<simpleContent>
<extension base="token">
<attribute name="type" type="changePoll:caseTypeEnum"
use="required"/>
<attribute name="name" type="token"
use="optional"/>
</extension>
</simpleContent>
</complexType>
<!--
Enumerated list of case identifier types
-->
<simpleType name="caseTypeEnum">
<restriction base="token">
<enumeration value="udrp"/>
<enumeration value="urs"/>
<enumeration value="custom"/>
</restriction>
</simpleType>
<!--
Who type
-->
<simpleType name="whoType">
<restriction base="normalizedString">
<minLength value="1"/>
<maxLength value="255"/>
</restriction>
</simpleType>
<!--
End of schema.
-->
</schema>
END
5. IANA Considerations
5.1. XML Namespace
This document uses URNs to describe XML namespaces and XML schemas
conforming to a registry mechanism described in [RFC3688]. The
following URI assignment has been made by IANA:
Registration for the changePoll namespace:
URI: urn:ietf:params:xml:ns:changePoll-1.0
Registrant Contact: IESG
XML: None. Namespace URIs do not represent an XML specification.
Registration for the changePoll XML schema:
URI: urn:ietf:params:xml:ns:changePoll-1.0
Registrant Contact: IESG
XML: See the "Formal Syntax" section of this document.
5.2. EPP Extension Registry
The EPP extension described in this document has been registered by
the IANA in the Extensions for the "Extensible Provisioning Protocol
(EPP)" registry described in [RFC7451]. The details of the
registration are as follows:
Name of Extension: Change Poll Extension for the Extensible
Provisioning Protocol (EPP)
Document Status: Standards Track
Reference: RFC 8590
Registrant Name and Email Address: IESG <iesg@ietf.org>
TLDs: Any
IPR Disclosure: None
Status: Active
Notes: None
6. Security Considerations
The mapping extensions described in this document do not provide any
security services beyond those described by EPP [RFC5730] and
protocol layers used by EPP. The security considerations described
in these other specifications apply to this specification as well.
7. References
7.1. Normative References
[RFC20] Cerf, V., "ASCII format for network interchange", STD 80,
RFC 20, DOI 10.17487/RFC0020, October 1969,
<https://www.rfc-editor.org/info/rfc20>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
DOI 10.17487/RFC3688, January 2004,
<https://www.rfc-editor.org/info/rfc3688>.
[RFC3915] Hollenbeck, S., "Domain Registry Grace Period Mapping for
the Extensible Provisioning Protocol (EPP)", RFC 3915,
DOI 10.17487/RFC3915, September 2004,
<https://www.rfc-editor.org/info/rfc3915>.
[RFC5730] Hollenbeck, S., "Extensible Provisioning Protocol (EPP)",
STD 69, RFC 5730, DOI 10.17487/RFC5730, August 2009,
<https://www.rfc-editor.org/info/rfc5730>.
[RFC5731] Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
Domain Name Mapping", STD 69, RFC 5731,
DOI 10.17487/RFC5731, August 2009,
<https://www.rfc-editor.org/info/rfc5731>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[W3C.REC-xmlschema-2-20041028]
Biron, P. and A. Malhotra, "XML Schema Part 2: Datatypes
Second Edition", World Wide Web Consortium Recommendation
REC-xmlschema-2-20041028, October 2004,
<http://www.w3.org/TR/2004/REC-xmlschema-2-20041028>.
7.2. Informative References
[RFC7451] Hollenbeck, S., "Extension Registry for the Extensible
Provisioning Protocol", RFC 7451, DOI 10.17487/RFC7451,
February 2015, <https://www.rfc-editor.org/info/rfc7451>.
Acknowledgments
The authors wish to acknowledge the original concept for this
document and the efforts in the initial versions of this document by
Trung Tran and Sharon Wodjenski.
Special suggestions that have been incorporated into this document
were provided by Scott Hollenbeck, Michael Holloway, and Patrick
Mevzek.
Authors' Addresses
James Gould
VeriSign, Inc.
12061 Bluemont Way
Reston, VA 20190
United States of America
Email: jgould@verisign.com
URI: http://www.verisign.com
Kal Feher
Neustar
lvl 8/10 Queens Road
Melbourne, VIC 3004
Australia
Email: ietf@feherfamily.org
URI: http://www.neustar.biz
AI ELI5
On this page
PROBLEMA client that sponsors objects such as domain names can have them changed by batch jobs, support staff, dispute actions or court orders, and the client is not involved in or aware of those changes.
MECHANISMThe server queues EPP poll messages that carry the object's state before and/or after the change, plus a changeData element saying what operation happened, when, who did it and optionally why.
WHY IT MATTERSClients can keep their own systems in sync with the server. It is a Proposed Standard and has not been obsoleted or updated.
§1Why Clients Need Change Notices
RFC 8590 is an extension to version 1.0 of the Extensible Provisioning Protocol (EPP, RFC 5730). It is used together with an object mapping such as the domain name mapping in RFC 5731. Its job is to notify a client about operations on objects the client sponsors when the client was not directly involved.
The abstract lists the kinds of operations in mind: regular batch processes, customer support actions, Uniform Domain-Name Dispute-Resolution Policy (UDRP) or Uniform Rapid Suspension (URS) actions, court-directed actions, and bulk updates based on customer requests. Which operations and which clients get a notice is up to server policy.
Notices travel as messages in the EPP poll queue. The extension only extends the EPP <poll> response; it does not extend the <poll> command.
When someone other than you changes something you look after, the server leaves you a message so your own records can stay correct.
§2The changeData Element
The extra information lives in a <changePoll:changeData> element in the extension part of the poll response. The object itself is shown in the normal resData block, so the client sees the object's state together with the operation detail: what, who, when and why.
Its children are:
<changePoll:operation>: the transform operation that was executed.<changePoll:date>: when it was executed.<changePoll:svTRID>: the server transaction identifier of the operation.<changePoll:who>: who executed it.<changePoll:caseId>(optional): a case identifier whose requiredtypeisudrp,ursorcustom; a custom case is named with the optionalnameattribute.<changePoll:reason>(optional): server-specific text explaining why, in the language negotiated with the client.
The who value is free-form and meant strictly for audit purposes, not to drive client-side logic. A server may base it on a user identifier, a name or a role such as CSR or Batch.
Each note answers four questions: what happened, when, who did it, and sometimes why.
§3Operations and Before/After State
The operation element holds one of an enumerated list: create, delete, renew, transfer, update, restore, autoRenew, autoDelete, autoPurge or custom. An optional op attribute refines it. A delete or autoDelete that purges the object immediately MUST set op to purge. A transfer MUST set it to request, approve, cancel or reject, and a restore MUST set it to request or report. A custom operation MUST put its name in op.
The state attribute of changeData is before or after, defaulting to after. A server MAY send both, using one poll message for each, and the before message MUST be queued first.
If an operation has no after state, such as a purge, the server MUST use the before message. If it has no before state, such as create, the server MUST use the after message.
The note can show your thing as it was before the change, as it is after, or both. If the thing was thrown away there is no after, and if it was just made there is no before.
- createCreate — Object created; only an after state exists.
- deleteDelete — op is purge if the object is purged immediately.
- renewRenew — Renew operation as defined in RFC 5730.
- transferTransfer — op is request, approve, cancel or reject.
- updateUpdate — Update operation as defined in RFC 5730.
- restoreRestore — op is request or report.
- autoRenewAuto renew — Executed by the server.
- autoDeleteAuto delete — Executed by the server; op is purge if purged immediately.
- autoPurgeAuto purge — Server removes an object that had pendingDelete status.
- customCustom — op carries the custom name; supported ones depend on server policy.
§4Worked Examples in the RFC
Section 3.1.2 gives several example poll responses, all with result code 1301 (command completed successfully; ack to dequeue). They include a URS lock on domain.example shown once with the before state and once with the after state, a custom sync operation, an immediate purge after a delete with the reason Court order, an autoPurge of a domain with pendingDelete status, and an update to the host ns1.domain.example.
In the URS example the before message shows the domain with status ok, while the after message shows the statuses serverUpdateProhibited, serverDeleteProhibited and serverTransferProhibited. Both carry the case identifier urs123 and the reason URS Lock.
The examples show real-looking notes: a domain locked by a dispute, a domain thrown away by court order, and a host that was changed.
§5Dates, Commands and the Schema
Dates and times MUST be in UTC using the Gregorian calendar, in the extended date-time form with uppercase T and Z from XML Schema, because XML Schema does not support truncated forms or lowercase letters.
The extension adds nothing to the EPP <check>, <info> or <transfer> commands or to <create>, <delete>, <renew> and <update>. It only adds elements to the poll response.
The formal XML schema is in Section 4. It makes who a string of 1 to 255 characters and gives state a default of after. The namespace is urn:ietf:params:xml:ns:changePoll-1.0; implementations MUST NOT depend on the prefix changePoll and should use a namespace-aware XML parser.
Times are written one strict way so every computer reads them the same. The rules for the note's shape are written down in a formal template.
§6IANA Registrations
IANA registered the XML namespace and the XML schema, both with the URI urn:ietf:params:xml:ns:changePoll-1.0 and the IESG as registrant contact, following RFC 3688. The extension is also registered in the EPP extension registry from RFC 7451 with status Active and TLDs set to Any.
The name of this extension was written in the official list so nobody else uses it.
§7Security Considerations
The extension provides no security services beyond those of EPP (RFC 5730) and the protocol layers EPP runs over. The security considerations of those specifications apply here as well.
This note system adds no new locks. It relies on the locks EPP already has.
§8References
[RFC3688]RFC 3688Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, January 2004.January 2004[RFC3915]RFC 3915Hollenbeck, S., "Domain Registry Grace Period Mapping for the Extensible Provisioning Protocol (EPP)", RFC 3915, September 2004.October 2004[RFC5730]RFC 5730Hollenbeck, S., "Extensible Provisioning Protocol (EPP)", STD 69, RFC 5730, August 2009.August 2009[RFC5731]RFC 5731Hollenbeck, S., "Extensible Provisioning Protocol (EPP) Domain Name Mapping", STD 69, RFC 5731, August 2009.August 2009[RFC7451]RFC 7451Hollenbeck, S., "Extension Registry for the Extensible Provisioning Protocol", RFC 7451, February 2015.February 2015