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PROPOSED STANDARD

    Network Working Group                                      S. Hollenbeck
    Request for Comments: 3915                                VeriSign, Inc.
    Category: Standards Track                                 September 2004

                 Domain Registry Grace Period Mapping for the
                     Extensible Provisioning Protocol (EPP)

    Status of this Memo

       This document specifies an Internet standards track protocol for the
       Internet community, and requests discussion and suggestions for
       improvements.  Please refer to the current edition of the "Internet
       Official Protocol Standards" (STD 1) for the standardization state
       and status of this protocol.  Distribution of this memo is unlimited.

    Copyright Notice

       Copyright (C) The Internet Society (2004).

    Abstract

       This document describes an Extensible Provisioning Protocol (EPP)
       extension mapping for the management of Domain Name System (DNS)
       domain names subject to "grace period" policies defined by the
       Internet Corporation for Assigned Names and Numbers (ICANN).  Grace
       period policies exist to allow protocol actions to be reversed or
       otherwise revoked during a short period of time after the protocol
       action has been performed.  Specified in XML, this mapping extends
       the EPP domain name mapping to provide additional features required
       for grace period processing.

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    Table of Contents

       1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
           1.1.  Conventions Used In This Document. . . . . . . . . . . .  4
       2.  Redemption Grace Period State Diagram  . . . . . . . . . . . .  4
       3.  Object Attributes  . . . . . . . . . . . . . . . . . . . . . .  6
           3.1.  Status Values  . . . . . . . . . . . . . . . . . . . . .  6
           3.2.  Registration Data and Supporting Information . . . . . .  7
           3.3.  Dates and Times  . . . . . . . . . . . . . . . . . . . .  7
           3.4.  Client Statements  . . . . . . . . . . . . . . . . . . .  8
       4.  EPP Command Mapping  . . . . . . . . . . . . . . . . . . . . .  8
           4.1   EPP Query Commands . . . . . . . . . . . . . . . . . . .  8
                 4.1.1.  EPP <check> Command  . . . . . . . . . . . . . .  8
                 4.1.2.  EPP <info> Command . . . . . . . . . . . . . . .  8
                 4.1.3.  EPP <transfer> Command . . . . . . . . . . . . . 11
           4.2.  EPP Transform Commands . . . . . . . . . . . . . . . . . 11
                 4.2.1.  EPP <create> Command . . . . . . . . . . . . . . 12
                 4.2.2.  EPP <delete> Command . . . . . . . . . . . . . . 12
                 4.2.3.  EPP <renew> Command  . . . . . . . . . . . . . . 12
                 4.2.4.  EPP <transfer> Command . . . . . . . . . . . . . 12
                 4.2.5.  EPP <update> Command . . . . . . . . . . . . . . 12
       5.  Formal Syntax  . . . . . . . . . . . . . . . . . . . . . . . . 16
       6.  Internationalization Considerations  . . . . . . . . . . . . . 19
       7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 20
       8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 20
       9.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 20
       10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 21
           10.1. Normative References . . . . . . . . . . . . . . . . . . 21
           10.2. Informative References . . . . . . . . . . . . . . . . . 21
       Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 22
       Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 23

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    1.  Introduction

       This document describes an extension mapping for version 1.0 of the
       Extensible Provisioning Protocol (EPP) described in RFC 3730 [1].
       This mapping, an extension of the domain name mapping described in
       RFC 3731 [2], is specified using the Extensible Markup Language (XML)
       1.0 [3] and XML Schema notation ([4], [5]).

       The EPP core protocol specification [1] provides a complete
       description of EPP command and response structures.  A thorough
       understanding of the base protocol specification is necessary to
       understand the mapping described in this document.

       Over the course of several months in 2002, The Internet Corporation
       for Assigned Names and Numbers (ICANN) developed an implementation
       proposal to provide a "grace period" for Domain Name System (DNS)
       domain name recovery (or redemption) before a domain name is purged
       from the repository of the authoritative registry for the domain
       name.  This mapping extends the EPP domain <update> command to
       initiate the redemption process for a domain name that has entered
       the Redemption Grace Period (RGP) and it extends the EPP domain
       <info> response to identify the status of domains that have entered
       various grace periods defined by ICANN policy.

       In March 2003, ICANN published a task force report describing other
       domain registry grace periods related to EPP operations.  This
       mapping describes extension status values to note the grace periods
       described in the report, including:

       o  An "add grace period" after the initial registration of a domain
          name.  If the domain name is deleted by the registrar during this
          period, the registry provides a credit to the registrar for the
          cost of the registration.

       o  An "auto-renew grace period" after a domain name registration
          period expires and is extended (renewed) automatically by the
          registry.  If the domain name is deleted by the registrar during
          this period, the registry provides a credit to the registrar for
          the cost of the renewal.

       o  A "renew grace period" after a domain name registration period is
          explicitly extended (renewed) by the registrar.  If the domain
          name is deleted by the registrar during this period, the registry
          provides a credit to the registrar for the cost of the renewal.

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       o  A "transfer grace period" after the successful transfer of domain
          name registration sponsorship from one registrar to another
          registrar.  If the domain name is deleted by the new sponsoring
          registrar during this period, the registry provides a credit to
          the registrar for the cost of the transfer.

       Each grace period exists for a specific period of time that is
       typically measured in days.  The duration of each grace period is a
       matter of registry operational policy that is not addressed in this
       document.

    1.1.  Conventions Used In This Document

       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 BCP 14, RFC 2119 [6].

       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 is provided only to illustrate element
       relationships and is not a REQUIRED feature of this specification.

       XML is case sensitive.  Unless stated otherwise, XML specifications
       and examples provided in this document MUST be interpreted in the
       character case presented to develop a conforming implementation.

    2.  Redemption Grace Period State Diagram

       The Redemption Grace Period (RGP) involves several domain state
       transitions as a domain name moves through the redemption process:

       1.  A domain is initially in the EPP "ok" status, or some other
           status that allows processing of the EPP <delete> command.

       2.  A <delete> command is received and processed for the domain name.

       3.  RGP begins once the <delete> command is processed successfully.
           The EPP status changes to "pendingDelete", and the RGP status is
           initialized to "redemptionPeriod".  The domain remains in this
           state until either a <restore> operation is requested or the
           redemption period elapses.

       4.  A <restore> operation can be requested using the extended EPP
           <update> command.  Go to step 8 if the redemption period elapses
           before a <restore> request is received.

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       5.  If the <restore> is successful, the Registry waits to receive a
           restore report from the registrar for a period of time defined by
           the Registry.  The EPP status remains "pendingDelete" and the RGP
           status changes to "pendingRestore".  While this extension defines
           a method to deliver a restore report via EPP, an out-of-band
           mechanism (such as a web site) can also be used to deliver
           restore reports.

       6.  The domain name returns to the redemption period state (state 3)
           if a restore report is not received.

       7.  If a restore report is received the EPP status returns to "ok"
           (or whatever it was prior to processing the <delete> command),
           and the RGP status is removed completely.

       8.  The redemption period elapses before a <restore> request is
           received.

       9.  The EPP status remains "pendingDelete" and the RGP status changes
           to "pendingDelete".  The domain name remains in this state for a
           period of time defined by the Registry.

       10. The domain name is purged once the pending delete period elapses.

       11. The domain name is available for re-registration.

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       Figure 1: RGP State Diagram

                 |
                 v
       +----------------------+    (2)   +----------------------+
       |EPP: ok            (1)| <delete> |EPP: pendingDelete (3)|
       |RGP: N/A              |--------->|RGP: redemptionPeriod |
       +----------------------+          +----------------------+
          ^                         (4)    |  ^             |
          |                      <restore> |  |      No (8) |
          |                    +-----------+  |   <restore> |
          |                    |              |             |
          |                    v              |             v
          |  +----------------------+         |  +----------------------+
          |  |EPP: pendingDelete (5)|         |  |EPP: pendingDelete (9)|
          |  |RGP: pendingRestore   |---------+  |RGP: pendingDelete    |
          |  +----------------------+ Report     +----------------------+
          |                    |      not (6)               |
          |          (7)       |      Received   Purge (10) |
          |    Report Received |                            |
          +--------------------+                            v
                                                 +----------------------+
                                                 |       Purged     (11)|
                                                 |                      |
                                                 +----------------------+

    3.  Object Attributes

       This extension adds additional elements to the EPP domain name
       mapping [2].  Only new element descriptions are described here.

    3.1.  Status Values

       This extension defines new status values to represent the different
       states that a domain name can be in as a result of grace period
       processing.  These are:

       addPeriod: This grace period is provided after the initial
          registration of a domain name.  If the domain name is deleted by
          the registrar during this period, the registry provides a credit
          to the registrar for the cost of the registration.

       autoRenewPeriod: This grace period is provided after a domain
          name registration period expires and is extended (renewed)
          automatically by the registry.  If the domain name is deleted by
          the registrar during this period, the registry provides a credit
          to the registrar for the cost of the renewal.

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       renewPeriod: This grace period is provided after a domain name
          registration period is explicitly extended (renewed) by the
          registrar.  If the domain name is deleted by the registrar during
          this period, the registry provides a credit to the registrar for
          the cost of the renewal.

       transferPeriod: This grace period is provided after the
          successful transfer of domain name registration sponsorship from
          one registrar to another registrar.  If the domain name is deleted
          by the new sponsoring registrar during this period, the registry
          provides a credit to the registrar for the cost of the transfer.

       redemptionPeriod: This status value is used to describe a
          domain for which a <delete> command has been received, but the
          domain has not yet been purged because an opportunity exists to
          restore the domain and abort the deletion process.

       pendingRestore: This status value is used to describe a domain that
          is in the process of being restored after being in the
          redemptionPeriod state.

       pendingDelete: This status value is used to describe a domain that
          has entered the purge processing state after completing the
          redemptionPeriod state.  A domain in this status MUST also be in
          the pendingDelete status described in the EPP domain mapping [2].

    3.2.  Registration Data and Supporting Information

       This extension allows a client to provide copies of registration data
       (whois [9] data, for example) and supporting information in a restore
       report as required by the RGP process.  No specific format is
       required by this extension; both free text and XML markup MAY be
       used.

       Operators of servers that provide registration data might find it
       useful to provide grace period status values in their responses to
       client queries.  This information can be useful to people who want to
       understand the operations that can be performed on a domain name at
       any give time.

    3.3.  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 upper case "T" and "Z" characters defined in RFC
       3339 [7] MUST be used to represent date-time values as XML Schema
       does not support truncated date-time forms or lower case "T" and "Z"
       characters.

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    3.4.  Client Statements

       The RGP process requires a client to make two statements regarding
       the data included in a restore report.  No specific format is
       required by this extension; both free text and XML markup MAY be
       used.  English is the default language used within the statements,
       but other languages MAY be used.

    4.  EPP Command Mapping

       A detailed description of the EPP syntax and semantics can be found
       in the EPP core protocol specification [1].  The command mappings
       described here are specifically for use in implementing redemption
       grace period processes via EPP.

    4.1.  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.

    4.1.1.  EPP <check> Command

       This extension does not add any elements to the EPP <check> command
       or <check> response described in the EPP domain mapping [2].

    4.1.2.  EPP <info> Command

       This extension does not add any elements to the EPP <info> command
       described in the EPP domain mapping [2].  Additional elements are
       defined for the <info> response.

       When an <info> command has been processed successfully, the EPP
       <resData> element MUST contain child elements as described in [2]. In
       addition, the EPP <extension> element MUST contain a child
       <rgp:infData> element that identifies the registry grace period
       namespace and the location of the registry grace period schema.  The
       <rgp:infData> element contains a single <rgp:rgpStatus> element that
       contains a single attribute "s" whose value describes the current
       grace period status of the domain.  Possible status values are
       described in section Section 3.1.

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       Example <info> response for "addPeriod" status:

       S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
       S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
       S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
       S:     epp-1.0.xsd">
       S:  <response>
       S:    <result code="1000">
       S:      <msg>Command completed successfully</msg>
       S:    </result>
       S:    <resData>
       S:      <domain:infData
       S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
       S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
       S:       domain-1.0.xsd">
       S:        <domain:name>example.com</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:ns>
       S:          <domain:hostObj>ns1.example.com</domain:hostObj>
       S:          <domain:hostObj>ns1.example.net</domain:hostObj>
       S:        </domain:ns>
       S:        <domain:host>ns1.example.com</domain:host>
       S:        <domain:host>ns2.example.com</domain:host>
       S:        <domain:clID>ClientX</domain:clID>
       S:        <domain:crID>ClientX</domain:crID>
       S:        <domain:crDate>2003-11-26T22:00:00.0Z</domain:crDate>
       S:        <domain:exDate>2005-11-26T22:00:00.0Z</domain:exDate>
       S:        <domain:authInfo>
       S:          <domain:pw>2fooBAR</domain:pw>
       S:        </domain:authInfo>
       S:      </domain:infData>
       S:    </resData>
       S:    <extension>
       S:      <rgp:infData xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       S:       xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       S:       rgp-1.0.xsd">
       S:        <rgp:rgpStatus s="addPeriod"/>
       S:      </rgp:infData>
       S:    </extension>
       S:    <trID>
       S:      <clTRID>ABC-12345</clTRID>
       S:      <svTRID>54322-XYZ</svTRID>
       S:    </trID>

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       S:  </response>
       S:</epp>

       Example <info> response for "redemptionPeriod" status:

       S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
       S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
       S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
       S:     epp-1.0.xsd">
       S:  <response>
       S:    <result code="1000">
       S:      <msg>Command completed successfully</msg>
       S:    </result>
       S:    <resData>
       S:      <domain:infData
       S:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
       S:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
       S:       domain-1.0.xsd">
       S:        <domain:name>example.com</domain:name>
       S:        <domain:roid>EXAMPLE1-REP</domain:roid>
       S:        <domain:status s="pendingDelete"/>
       S:        <domain:registrant>jd1234</domain:registrant>
       S:        <domain:contact type="admin">sh8013</domain:contact>
       S:        <domain:contact type="tech">sh8013</domain:contact>
       S:        <domain:ns>
       S:          <domain:hostObj>ns1.example.com</domain:hostObj>
       S:          <domain:hostObj>ns1.example.net</domain:hostObj>
       S:        </domain:ns>
       S:        <domain:host>ns1.example.com</domain:host>
       S:        <domain:host>ns2.example.com</domain:host>
       S:        <domain:clID>ClientX</domain:clID>
       S:        <domain:crID>ClientY</domain:crID>
       S:        <domain:crDate>1999-04-03T22:00:00.0Z</domain:crDate>
       S:        <domain:upID>ClientX</domain:upID>
       S:        <domain:upDate>1999-12-03T09:00:00.0Z</domain:upDate>
       S:        <domain:exDate>2005-04-03T22:00:00.0Z</domain:exDate>
       S:        <domain:trDate>2000-04-08T09:00:00.0Z</domain:trDate>
       S:        <domain:authInfo>
       S:          <domain:pw>2fooBAR</domain:pw>
       S:        </domain:authInfo>
       S:      </domain:infData>
       S:    </resData>
       S:    <extension>
       S:      <rgp:infData xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       S:       xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       S:       rgp-1.0.xsd">
       S:        <rgp:rgpStatus s="redemptionPeriod"/>

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       S:      </rgp:infData>
       S:    </extension>
       S:    <trID>
       S:      <clTRID>ABC-12345</clTRID>
       S:      <svTRID>54322-XYZ</svTRID>
       S:    </trID>
       S:  </response>
       S:</epp>

       Example <info> response extension for "pendingRestore" status (note
       that only the extension element changes from the first example):

       S:<extension>
       S:  <rgp:infData xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       S:   xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       S:   rgp-1.0.xsd">
       S:    <rgp:rgpStatus s="pendingRestore"/>
       S:  </rgp:infData>
       S:</extension>

       Example <info> response extension for "pendingDelete" status (note
       that only the extension element changes from the first example):

       S:<extension>
       S:  <rgp:infData xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       S:   xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       S:   rgp-1.0.xsd">
       S:    <rgp:rgpStatus s="pendingDelete"/>
       S:  </rgp:infData>
       S:</extension>

    4.1.3.  EPP <transfer> Command

       This extension does not add any elements to the EPP <transfer>
       command or <transfer> response described in the EPP domain mapping
       [2].

    4.2.  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.

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    4.2.1.  EPP <create> Command

       This extension does not add any elements to the EPP <create> command
       or <create> response described in the EPP domain mapping [2].

    4.2.2.  EPP <delete> Command

       This extension does not add any elements to the EPP <delete> command
       or <delete> response described in the EPP domain mapping [2].

    4.2.3.  EPP <renew> Command

       This extension does not add any elements to the EPP <renew> command
       or <renew> response described in the EPP domain mapping [2].

    4.2.4.  EPP <transfer> Command

       This extension does not add any elements to the EPP <transfer>
       command or <transfer> response described in the EPP domain mapping
       [2].

    4.2.5.  EPP <update> Command

       This extension defines additional elements to extend the EPP <update>
       command and response described in the EPP domain mapping [2] for
       redemption grace period processing.

       The EPP <update> command provides a transform operation that allows a
       client to change the state of a domain object.  The registry grace
       period extension modifies base update processing to support
       redemption of domain names for which a <delete> command has been
       processed, but the name has not yet been purged.

       Section 3.2.5 of the EPP domain mapping describes the elements that
       have to be specified within an <update> command.  The requirement to
       provide at least one <domain:add>, <domain:rem>, or <domain:chg>
       element is updated by this extension such that at least one empty
       <domain:add>, <domain:rem>, or <domain:chg> element MUST be present
       if this extension is specified within an <update> command.  This
       requirement is updated to disallow the possibility of modifying a
       domain object as part of redemption grace period recovery processing.

       In addition to the EPP command elements described in the EPP domain
       mapping [2], the <update> command MUST contain an <extension>
       element.  The <extension> element MUST contain a child <rgp:update>
       element that identifies the registry grace period namespace and the
       location of the registry grace period schema.  The <rgp:update>

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       element contains a single <rgp:restore> element that contains an
       OPTIONAL <rgp:report> element that MAY be used to deliver a
       redemption grace period restore report.

       The <rgp:restore> element contains a REQUIRED "op" attribute that
       describes the redemption grace period operation being requested.  Two
       values are defined: "request" is used to identify a restore request
       that does not include a restore report, and "report" is used to
       identify a restore request that contains a restore report.  A report
       MAY be submitted more than once if corrections are required.  If the
       value of the "op" attribute is "request" an <rgp:report> element MUST
       NOT be present.  If the value of the "op" attribute is "report" an
       <rgp:report> element MUST be present.

       The <rgp:report> element contains the following child elements:

       -  An <rgp:preData> element that contains a copy of the registration
          data that existed for the domain name prior to the domain name
          being deleted.  This element MAY contain both text and XML markup.

       -  An <rgp:postData> element that contains a copy of the registration
          data that exists for the domain name at the time the restore
          report is submitted.  This element MAY contain both text and XML
          markup.

       -  An <rgp:delTime> element that contains the date and time when the
          domain name delete request was sent to the server.

       -  An <rgp:resTime> element that contains the date and time when the
          original <rgp:restore> command was sent to the server.

       -  An <rgp:resReason> element that contains a brief explanation of
          the reason for restoring the domain name.

       -  An <rgp:statement> element that contains a text statement that the
          client has not restored the domain name in order to assume the
          rights to use or sell the domain name for itself or for any third
          party.  Supporting information related to this statement MAY be
          supplied in the <rgp:other> element described below.  An OPTIONAL
          "lang" attribute MAY be present to identify the language if
          English (value "en") is not used to represent the statement.

       -  A second <rgp:statement> element that contains a text statement
          that the information in the restore report is factual to the best
          of the client's knowledge.  An OPTIONAL "lang" attribute MAY be
          present to identify the language if English (value "en") is not
          used to represent the statement.

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    RFC 3915                EPP Grace Period Mapping          September 2004

       -  An OPTIONAL <rgp:other> element that contains any information
          needed to support the statements provided by the client.  This
          element MAY contain both text and XML markup.

       More detailed information describing the information required to be
       provided in a restore report is available from ICANN.

       Example <update> command without a restore report:

       C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
       C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
       C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
       C:     epp-1.0.xsd">
       C:  <command>
       C:    <update>
       C:      <domain:update
       C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
       C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
       C:       domain-1.0.xsd">
       C:        <domain:name>example.com</domain:name>
       C:        <domain:chg/>
       C:      </domain:update>
       C:    </update>
       C:    <extension>
       C:      <rgp:update xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       C:       xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       C:       rgp-1.0.xsd">
       C:        <rgp:restore op="request"/>
       C:      </rgp:update>
       C:    </extension>
       C:    <clTRID>ABC-12345</clTRID>
       C:  </command>
       C:</epp>

       Example <update> command with a restore report:

       C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
       C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
       C:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       C:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
       C:     epp-1.0.xsd">
       C:  <command>
       C:    <update>
       C:      <domain:update
       C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0"
       C:       xsi:schemaLocation="urn:ietf:params:xml:ns:domain-1.0
       C:       domain-1.0.xsd">

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    RFC 3915                EPP Grace Period Mapping          September 2004

       C:        <domain:name>example.com</domain:name>
       C:        <domain:chg/>
       C:      </domain:update>
       C:    </update>
       C:    <extension>
       C:      <rgp:update xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       C:       xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       C:       rgp-1.0.xsd">
       C:        <rgp:restore op="report">
       C:          <rgp:report>
       C:            <rgp:preData>Pre-delete registration data goes here.
       C:            Both XML and free text are allowed.</rgp:preData>
       C:            <rgp:postData>Post-restore registration data goes here.
       C:            Both XML and free text are allowed.</rgp:postData>
       C:            <rgp:delTime>2003-07-10T22:00:00.0Z</rgp:delTime>
       C:            <rgp:resTime>2003-07-20T22:00:00.0Z</rgp:resTime>
       C:            <rgp:resReason>Registrant error.</rgp:resReason>
       C:            <rgp:statement>This registrar has not restored the
       C:            Registered Name in order to assume the rights to use
       C:            or sell the Registered Name for itself or for any
       C:            third party.</rgp:statement>
       C:            <rgp:statement>The information in this report is
       C:            true to best of this registrar's knowledge, and this
       C:            registrar acknowledges that intentionally supplying
       C:            false information in this report shall constitute an
       C:            incurable material breach of the
       C:            Registry-Registrar Agreement.</rgp:statement>
       C:            <rgp:other>Supporting information goes
       C:            here.</rgp:other>
       C:          </rgp:report>
       C:        </rgp:restore>
       C:      </rgp:update>
       C:    </extension>
       C:    <clTRID>ABC-12345</clTRID>
       C:  </command>
       C:</epp>

       When an extended <update> command without a restore report has been
       processed successfully, the EPP response is as described in the EPP
       domain mapping [2] except that an extension element is added to
       describe grace period status as a result of processing the <update>
       command.  The extension element contains a single child element
       (<upData>) that itself contains a single child element (<rgpStatus>)
       that contains a single attribute "s" whose value MUST be
       "pendingRestore" if the <restore> request has been accepted.

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    RFC 3915                EPP Grace Period Mapping          September 2004

       Example "restore request" <update> response:

       S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
       S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0"
       S:     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       S:     xsi:schemaLocation="urn:ietf:params:xml:ns:epp-1.0
       S:     epp-1.0.xsd">
       S:  <response>
       S:    <result code="1000">
       S:      <msg lang="en">Command completed successfully</msg>
       S:    </result>
       S:    <extension>
       S:      <rgp:upData xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
       S:       xsi:schemaLocation="urn:ietf:params:xml:ns:rgp-1.0
       S:       rgp-1.0.xsd">
       S:        <rgp:rgpStatus s="pendingRestore"/>
       S:      </rgp:upData>
       S:    </extension>
       S:    <trID>
       S:      <clTRID>ABC-12345</clTRID>
       S:      <svTRID>54321-XYZ</svTRID>
       S:    </trID>
       S:  </response>
       S:</epp>

       When an extended <update> command with a restore report has been
       processed successfully, the EPP response is as described in the EPP
       domain mapping [2] with no registry grace period extension.  Registry
       grace period extension is not required because acceptance of the
       restore report completes redemption grace period processing.

    5.  Formal Syntax

       An EPP object mapping is specified in XML Schema notation.  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.

       BEGIN
       <?xml version="1.0" encoding="UTF-8"?>

       <schema targetNamespace="urn:ietf:params:xml:ns:rgp-1.0"
               xmlns:rgp="urn:ietf:params:xml:ns:rgp-1.0"
               xmlns="http://www.w3.org/2001/XMLSchema"
               elementFormDefault="qualified">

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         <annotation>
           <documentation>
             Extensible Provisioning Protocol v1.0
             domain name extension schema for registry grace period
             processing.
           </documentation>
         </annotation>

       <!--
       Child elements found in EPP commands.
       -->
         <element name="update" type="rgp:updateType"/>

       <!--
       Child elements of the <update> command for the
       redemption grace period.
       -->
         <complexType name="updateType">
           <sequence>
             <element name="restore" type="rgp:restoreType"/>
           </sequence>
         </complexType>

         <complexType name="restoreType">
           <sequence>
             <element name="report" type="rgp:reportType"
              minOccurs="0"/>
           </sequence>
           <attribute name="op" type="rgp:rgpOpType" use="required"/>
         </complexType>

       <!--
       New redemption grace period operations can be defined
       by adding to this enumeration.
       -->
         <simpleType name="rgpOpType">
           <restriction base="token">
             <enumeration value="request"/>
             <enumeration value="report"/>
           </restriction>
         </simpleType>

         <complexType name="reportType">
           <sequence>
             <element name="preData" type="rgp:mixedType"/>
             <element name="postData" type="rgp:mixedType"/>
             <element name="delTime" type="dateTime"/>
             <element name="resTime" type="dateTime"/>

    Hollenbeck                  Standards Track                    [Page 17]

    RFC 3915                EPP Grace Period Mapping          September 2004

             <element name="resReason" type="rgp:reportTextType"/>
             <element name="statement" type="rgp:reportTextType"
              maxOccurs="2"/>
             <element name="other" type="rgp:mixedType"
              minOccurs="0"/>
           </sequence>
         </complexType>

         <complexType name="mixedType">
           <complexContent mixed="true">
             <restriction base="anyType">
               <sequence>
                 <any processContents="lax"
                  minOccurs="0" maxOccurs="unbounded"/>
               </sequence>
             </restriction>
           </complexContent>
         </complexType>

         <complexType name="reportTextType">
           <complexContent mixed="true">
             <restriction base="anyType">
               <sequence>
                 <any processContents="lax"
                  minOccurs="0" maxOccurs="unbounded"/>
               </sequence>
               <attribute name="lang" type="language" default="en"/>
             </restriction>
           </complexContent>
         </complexType>

       <!--
       Child response elements.
       -->
         <element name="infData" type="rgp:respDataType"/>
         <element name="upData" type="rgp:respDataType"/>

       <!--
       Response elements.
       -->
         <complexType name="respDataType">
           <sequence>
             <element name="rgpStatus" type="rgp:statusType"
              maxOccurs="unbounded"/>
           </sequence>
         </complexType>

       <!--

    Hollenbeck                  Standards Track                    [Page 18]

    RFC 3915                EPP Grace Period Mapping          September 2004

       Status is a combination of attributes and an optional
       human-readable message that may be expressed in languages
       other than English.
       -->
         <complexType name="statusType">
           <simpleContent>
             <extension base="normalizedString">
               <attribute name="s" type="rgp:statusValueType"
                use="required"/>
               <attribute name="lang" type="language" default="en"/>
             </extension>
           </simpleContent>
         </complexType>

         <simpleType name="statusValueType">
           <restriction base="token">
             <enumeration value="addPeriod"/>
             <enumeration value="autoRenewPeriod"/>
             <enumeration value="renewPeriod"/>
             <enumeration value="transferPeriod"/>
             <enumeration value="pendingDelete"/>
             <enumeration value="pendingRestore"/>
             <enumeration value="redemptionPeriod"/>
           </restriction>
         </simpleType>

       <!--
       End of schema.
       -->
       </schema>
       END

    6.  Internationalization Considerations

       EPP is represented in XML, which provides native support for encoding
       information using the Unicode character set and its more compact
       representations including UTF-8 [10].  Conformant XML processors
       recognize both UTF-8 and UTF-16 [11].  Though XML includes provisions
       to identify and use other character encodings through use of an
       "encoding" attribute in an <?xml?> declaration, use of UTF-8 is
       RECOMMENDED in environments where parser encoding support
       incompatibility exists.

       As an extension of the EPP domain mapping [2], the elements, element
       content, attributes, and attribute values described in this document
       MUST inherit the internationalization conventions used to represent
       higher-layer domain and core protocol structures present in an XML
       instance that includes this extension.

    Hollenbeck                  Standards Track                    [Page 19]

    RFC 3915                EPP Grace Period Mapping          September 2004

    7.  IANA Considerations

       This document uses URNs to describe XML namespaces and XML schemas
       conforming to a registry mechanism described in RFC 3688 [8].  Two
       URI assignments were requested and have been registered by the IANA.

       Registration request for the registry grace period namespace:

       URI: urn:ietf:params:xml:ns:rgp-1.0

       Registrant Contact: See the "Author's Address" section of this
       document.

       XML: None.  Namespace URIs do not represent an XML specification.

       Registration request for the registry grace period XML schema:

       URI: urn:ietf:params:xml:schema:rgp-1.0

       Registrant Contact: See the "Author's Address" section of this
       document.

       XML: See the "Formal Syntax" section of this document.

    8.  Security Considerations

       The mapping extensions described in this document do not provide any
       security services beyond those described by EPP [1], the EPP domain
       name mapping [2], and protocol layers used by EPP.  The security
       considerations described in these other specifications apply to this
       specification as well.

       As with other domain object updates, redemption of a deleted domain
       object MUST be restricted to the sponsoring client as authenticated
       using the mechanisms described in sections 2.9.1.1 and 7 of RFC 3730
       [1].  Any attempt to recover a deleted domain object by any client
       other than the sponsoring client MUST be rejected with an appropriate
       EPP authorization error.

    9.  Acknowledgements

       The author would like to thank the following people who have provided
       significant contributions to the development of this document:

       James Gould, Antony Perkov, and Janusz Sienkiewicz.

    Hollenbeck                  Standards Track                    [Page 20]

    RFC 3915                EPP Grace Period Mapping          September 2004

    10.  References

    10.1.  Normative References

       [1]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)", RFC
            3730, March 2004.

       [2]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP) Domain
            Name Mapping", RFC 3731, March 2004.

       [3]  Bray, T., Paoli, J., Sperberg-McQueen, C., and E. Maler,
            "Extensible Markup Language (XML) 1.0 (2nd ed)", W3C REC-xml,
            October 2000, <http://www.w3.org/TR/REC-xml>.

       [4]  Thompson, H., Beech, D., Maloney, M., and N. Mendelsohn, "XML
            Schema Part 1: Structures", W3C REC-xmlschema-1, May 2001,
            <http://www.w3.org/TR/xmlschema-1/>.

       [5]  Biron, P. and A. Malhotra, "XML Schema Part 2: Datatypes", W3C
            REC-xmlschema-2, May 2001, <http://www.w3.org/TR/xmlschema-2/>.

       [6]  Bradner, S., "Key words for use in RFCs to Indicate Requirement
            Levels", BCP 14, RFC 2119, March 1997.

       [7]  Klyne, G. and C. Newman, "Date and Time on the Internet:
            Timestamps", RFC 3339, July 2002.

       [8]  Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, January
            2004.

    10.2.  Informative References

       [9]  Harrenstien, K., Stahl, M., and E. Feinler, "NICNAME/WHOIS", RFC
            954, October 1985.

       [10] Yergeau, F., "UTF-8, a transformation format of ISO 10646", STD
            63, RFC 3629, November 2003.

       [11] Hoffman, P. and F. Yergeau, "UTF-16, an encoding of ISO 10646",
            RFC 2781, February 2000.

    Hollenbeck                  Standards Track                    [Page 21]

    RFC 3915                EPP Grace Period Mapping          September 2004

    Author's Address

       Scott Hollenbeck
       VeriSign, Inc.
       21345 Ridgetop Circle
       Dulles, VA  20166-6503
       US

       EMail: shollenbeck@verisign.com

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    RFC 3915                EPP Grace Period Mapping          September 2004

    Full Copyright Statement

       Copyright (C) The Internet Society (2004).

       This document is subject to the rights, licenses and restrictions
       contained in BCP 78, and except as set forth therein, the authors
       retain all their rights.

       This document and the information contained herein are provided on an
       "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/S HE
       REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE
       INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR
       IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
       THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
       WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

    Intellectual Property

       The IETF takes no position regarding the validity or scope of any
       Intellectual Property Rights or other rights that might be claimed to
       pertain to the implementation or use of the technology described in
       this document or the extent to which any license under such rights
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       on the IETF's procedures with respect to rights in IETF Documents can
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       Copies of IPR disclosures made to the IETF Secretariat and any
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       attempt made to obtain a general license or permission for the use of
       such proprietary rights by implementers or users of this
       specification can be obtained from the IETF on-line IPR repository at
       http://www.ietf.org/ipr.

       The IETF invites any interested party to bring to its attention any
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       this standard.  Please address the information to the IETF at ietf-
       ipr@ietf.org.

    Acknowledgement

       Funding for the RFC Editor function is currently provided by the
       Internet Society.

    Hollenbeck                  Standards Track                    [Page 23]

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