



Network Working Group                                           J. Gould
Internet-Draft                                            VeriSign, Inc.
Intended status: Standards Track                               F. Obispo
Expires: April 18, 2019                                         L. Munoz
                                                       Uniregistry Corp.
                                                        October 15, 2018


  Extensible Provisioning Protocol (EPP) Internationalized Domain Name
                          (IDN) Table Mapping
                        draft-gould-idn-table-07

Abstract

   This document describes an Extensible Provisioning Protocol (EPP)
   mapping for getting Internationalized Domain Name (IDN)
   Table information for the registration of IDNs, using the EPP domain
   name mapping, and optionally with the IDN mapping extension.  An IDN
   Table defines the valid set of characters (code points) that can be
   used in a domain name.  Code points may overlap across IDN Tables and
   the IDN Tables supported by the servers are up to server policy.

   The IDN Table information can be used to validate an IDN prior to
   registration, can be cached by the client for pre-validation, can be
   used to select the best IDN Table for the IDN, and can be used to
   know if and what IDN Table Identifier to pass in a domain create.

Status of This Memo

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

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

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

   This Internet-Draft will expire on April 18, 2019.








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Copyright Notice

   Copyright (c) 2018 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
   (http://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.  IDN Table Identifier  . . . . . . . . . . . . . . . . . .   4
     2.2.  Domain Name . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  EPP Command Mapping . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  EPP Query Commands  . . . . . . . . . . . . . . . . . . .   5
       3.1.1.  EPP <check> Command . . . . . . . . . . . . . . . . .   5
         3.1.1.1.  Domain Check Form . . . . . . . . . . . . . . . .   5
         3.1.1.2.  Table Check Form  . . . . . . . . . . . . . . . .   8
       3.1.2.  EPP <info> Command  . . . . . . . . . . . . . . . . .   9
         3.1.2.1.  Domain Info Form  . . . . . . . . . . . . . . . .   9
         3.1.2.2.  Table Info Form . . . . . . . . . . . . . . . . .  13
         3.1.2.3.  List Info Form  . . . . . . . . . . . . . . . . .  17
       3.1.3.  EPP <transfer> Command  . . . . . . . . . . . . . . .  19
     3.2.  EPP Transform Commands  . . . . . . . . . . . . . . . . .  20
       3.2.1.  EPP <create> Command  . . . . . . . . . . . . . . . .  20
       3.2.2.  EPP <delete> Command  . . . . . . . . . . . . . . . .  20
       3.2.3.  EPP <renew> Command . . . . . . . . . . . . . . . . .  20
       3.2.4.  EPP <transfer> Command  . . . . . . . . . . . . . . .  20
       3.2.5.  EPP <update> Command  . . . . . . . . . . . . . . . .  20
   4.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .  20
     4.1.  IDN Table Mapping Schema  . . . . . . . . . . . . . . . .  21
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  25
     5.1.  XML Namespace . . . . . . . . . . . . . . . . . . . . . .  26
     5.2.  EPP Extension Registry  . . . . . . . . . . . . . . . . .  26
   6.  Implementation Status . . . . . . . . . . . . . . . . . . . .  26
     6.1.  Verisign EPP SDK  . . . . . . . . . . . . . . . . . . . .  27
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  27
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  27
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  27



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     8.2.  Informative References  . . . . . . . . . . . . . . . . .  28
   Appendix A.  Change History . . . . . . . . . . . . . . . . . . .  28
     A.1.  Change from 00 to 01  . . . . . . . . . . . . . . . . . .  28
     A.2.  Change from 01 to 02  . . . . . . . . . . . . . . . . . .  29
     A.3.  Change from 02 to 03  . . . . . . . . . . . . . . . . . .  29
     A.4.  Change from 03 to 04  . . . . . . . . . . . . . . . . . .  29
     A.5.  Change from 04 to 05  . . . . . . . . . . . . . . . . . .  29
     A.6.  Change from 05 to 06  . . . . . . . . . . . . . . . . . .  29
     A.7.  Change from 06 to 07  . . . . . . . . . . . . . . . . . .  29
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  29

1.  Introduction

   This document describes an extension mapping for version 1.0 of the
   Extensible Provisioning Protocol (EPP) [RFC5730].  This EPP mapping
   provides Internationalized Domain Name (IDN) Table information for
   the registration of IDNs, using the EPP domain name mapping
   [RFC5731], and optionally with the IDN mapping extension
   [I-D.ietf-eppext-idnmap].  An IDN Table defines the valid set of
   characters (code points) that can be used in a domain name.  Code
   points may overlap across IDN Tables and the IDN Tables supported by
   the servers are up to server policy.  This mapping provides the
   information clients need to register IDNs across a variety of servers
   with differing IDN policies.  The IDN Table Mapping can be used for
   the following:

   "Validate IDN Domain Name"  Validate that an IDN meets the server IDN
       policy.  The validation can be done prior to submitting a domain
       create, per [RFC5731].
   "Get IDN Tables Matching IDN Domain Name Along with Meta-Data"  Since
       IDN Table code points may overlap, the mapping can be used to
       identify the matching set of IDN Tables (language or script),
       along with the IDN Table meta-data.
   "Cache IDN Table Code Points"  Clients can query for the complete
       list of IDN Tables and can get the IDN Table meta-data, based on
       server policy, to support pre-validation in the client.
   "Get the IDN Table Identifier to Pass with a Domain Create"  Each IDN
       Table includes a server unique IDN Table Identifier that may be
       used as the value of the <idn:table> element in the IDN mapping
       extension [I-D.ietf-eppext-idnmap].  A flag indicates whether the
       IDN mapping extension [I-D.ietf-eppext-idnmap] is needed for the
       domain name.

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 RFC 2119 [RFC2119].



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   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.

   "idnTable-1.0" is used as an abbreviation for
   "urn:ietf:params:xml:ns:idnTable-1.0".  The XML namespace prefix
   "idnTable" is used, but implementations MUST NOT depend on it and
   instead employ a proper namespace-aware XML parser and serializer to
   interpret and output the XML documents.

2.  Object Attributes

   An EPP IDN Table object has attributes and associated values that can
   help in the registration of IDNs.  This section describes each type
   in detail.  The formal syntax for the attribute values described here
   can be found in the "Formal Syntax" section of this document and in
   the appropriate normative references.

2.1.  IDN Table Identifier

   The IDN Table Identifier is a server-defined unique value for an IDN
   Table object.  It is represented using an <idnTable:table> element or
   an <idnTable:name> element.  The IDN Table Identifier is used in the
   <check> and <info> commands and responses.  The IDN Table Identifier
   MAY also be used as the value for the IDN mapping extension
   [I-D.ietf-eppext-idnmap] <idn:table> element with a domain create of
   an IDN object.

2.2.  Domain Name

   A Domain Name, as represented by an <idnTable:domain> element, is
   used to enable validating the code points against the server IDN
   Tables and IDN policies and for retrieving IDN Table information
   associated with the domain name.  The Domain Name MUST be represented
   as either a U-label or A-label as defined in [RFC5890].

   An OPTIONAL attribute "form" MAY be used to specify the
   representation.  When present, the "form" attribute MUST be set to
   either "aLabel" for A-label or "uLabel" for U-label, depending on the
   chosen representation for the domain name.  The default "form"
   attribute is "aLabel" for A-label.




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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

   There are two forms of the EPP <check> command: the Domain Check Form
   (Section 3.1.1.1) and the Table Check Form (Section 3.1.1.2).

3.1.1.1.  Domain Check Form

   The Domain Check Form is used to check the validity of the domain
   name against the server IDN Tables and IDN policies, return whether
   the IDN mapping extension [I-D.ietf-eppext-idnmap] is needed with a
   domain <create> command, and provide the matching list of IDN
   Table Identifiers.  This mapping is not intended to determine the
   availability of the domain name.

   In addition to the standard EPP command elements, the <check> command
   MUST contain an <idnTable:check> element that identifies the
   idnTable namespace.  The <idnTable:check> element in the Domain Check
   Form contains the following child elements:

   <idnTable:domain>  One or more <idnTable:domain> elements that
       contain the fully qualified names of the domain objects, as
       defined in Section 2.2, to validate.

















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   Example Domain Check Form <check> command with three IDNs:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <check>
   C:      <idnTable:check
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:domain
   C:         form="uLabel">idn1.example</idnTable:domain>
   C:        <idnTable:domain
   C:         form="aLabel">idn2.example</idnTable:domain>
   C:        <idnTable:domain>idn3.example</idnTable:domain>
   C:      </idnTable:check>
   C:    </check>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When a <check> command has been processed successfully, the EPP
   <resData> element MUST contain a child <idnTable:chkData> element
   that identifies the idnTable namespace.  The <idnTable:chkData>
   element in the Domain Check Form contain one or more
   <idnTable:domain> elements that contain the following child elements:

   <idnTable:name>  The fully qualified name of the domain object, as
       defined in Section 2.2.  The element MUST contain a "valid"
       attribute whose value indicates whether the domain name is valid
       according to the server IDN Tables and IDN policies.  A value of
       "1" or "true" means that the domain name is valid according to
       the server IDN Tables and policies.  A value of "0" or "false"
       means that the domain name is not valid according to the server
       IDN Tables and policies.  The element MAY contain an "idnmap"
       attribute value that indicates whether the server requires the
       use of the IDN mapping extension [I-D.ietf-eppext-idnmap] with a
       domain create of the domain name.  A value of "1" or "true" means
       that the IDN mapping extension [I-D.ietf-eppext-idnmap] is
       required using one of the <idnTable:table> values.  A value of
       "0" or "false" means that the IDN mapping extension
       [I-D.ietf-eppext-idnmap] is not required.
   <idnTable:reason>  OPTIONAL reason that the domain name is not valid.
       If present, this element contains server-specific text to help
       explain why the domain name is not valid.  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).




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   <idnTable:table>  Zero or more OPTIONAL <idnTable:table> elements
       that contain the server defined IDN Table Identifier, as defined
       in Section 2.1, that matches the code points of the
       <idnTable:name> element.  The <idnTable:table> MAY be used as the
       value of the <idn:table> element in the IDN mapping extension
       [I-D.ietf-eppext-idnmap] for creating the IDN object or MAY be
       used as the value of the <idnTable:table> element of the
       Table Info Form (Section 3.1.2.2) <info> command, as described in
       Section 3.1.2, to retrieve more information about the IDN Table.

   Example Domain Check Form <check> response with three IDNs:


   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:chkData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:          <idnTable:domain>
   S:             <idnTable:name valid="true">
   S:             idn1.example</idnTable:name>
   S:             <idnTable:table>CHI</idnTable:table>
   S:          </idnTable:domain>
   S:          <idnTable:domain>
   S:             <idnTable:name valid="true" idnmap="true">
   S:             idn2.example</idnTable:name>
   S:             <idnTable:table>CHI</idnTable:table>
   S:             <idnTable:table>JPN</idnTable:table>
   S:          </idnTable:domain>
   S:          <idnTable:domain>
   S:             <idnTable:name valid="false">
   S:             idn3.example</idnTable:name>
   S:             <idnTable:reason>Commingled scripts
   S:             </idnTable:reason>
   S:          </idnTable:domain>
   S:      </idnTable:chkData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>




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3.1.1.2.  Table Check Form

   The Table Check Form is used to check the existence of an IDN
   Table using the IDN Table Identifier represented by the
   <idnTable:table> element.

   In addition to the standard EPP command elements, the <check> command
   MUST contain an <idnTable:check> element that identifies the
   idnTable namespace.  The <idnTable:check> element in the Table Check
   Form contains the following child elements:

   <idnTable:table>  One or more <idnTable:table> elements that contain
       the IDN Table Identifier, as defined in Section 2.1, to check for
       existence.

   Example Table Check Form <check> command with three IDN
   Table Identifiers:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <check>
   C:      <idnTable:check
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:table>CHI</idnTable:table>
   C:        <idnTable:table>JPN</idnTable:table>
   C:        <idnTable:table>INVALID</idnTable:table>
   C:      </idnTable:check>
   C:    </check>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When a <check> command has been processed successfully, the EPP
   <resData> element MUST contain a child <idnTable:chkData> element
   that identifies the idnTable namespace.  The <idnTable:chkData>
   element in the Table Check Form contains the following child
   elements:

   <idnTable:table>  One or more <idnTable:table> elements that contain
       the IDN Table Identifier, as defined in Section 2.1.  The element
       MUST contain an "exists" attribute whose value indicates the
       existence of the IDN Table Identifier.  A value of "1" or "true"
       means that the IDN Table Identifier exists.  A value of "0" or
       "false" means that the IDN Table Identifier does not exist.






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   Example Table Check Form <check> response with three IDN
   Table Identifiers:


   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:chkData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:          <idnTable:table exists="true">CHI
   S:          </idnTable:table>
   S:          <idnTable:table exists="true">JPN
   S:          </idnTable:table>
   S:          <idnTable:table exists="false">INVALID
   S:          </idnTable:table>
   S:      </idnTable:chkData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.2.  EPP <info> Command

   There are three forms of the EPP <info> command: the Domain Info Form
   (Section 3.1.2.1), the Table Info Form (Section 3.1.2.2), and the
   List Info Form (Section 3.1.2.3).

3.1.2.1.  Domain Info Form

   The Domain Info Form is used to validate the domain name code points
   against the IDN Tables and IDN policies, and to return the matching
   IDN Table meta-data.  The domain name, as defined in Section 2.2 can
   be provided as either a U-label or A-label.

   In addition to the standard EPP command elements, the <info> command
   MUST contain an <idnTable:info> element that identifies the
   idnTable namespace.  The <idnTable:info> element in the Domain Info
   Form contains the following child elements:






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   <idnTable:domain>  The domain name, as defined in Section 2.2, to
       validate against the IDN Tables and IDN policies, and to retrieve
       the matching IDN Table meta-data.

   Example Domain Info Form <info> command using a U-label Domain Name:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <idnTable:info
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:domain>idn1.example</idnTable:domain>
   C:      </idnTable:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   Example Domain Info Form <info> command using an A-label Domain Name:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <idnTable:info
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:domain>xn--idn1.example</idnTable:domain>
   C:      </idnTable:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When an <info> command has been processed successfully, the EPP
   <resData> element MUST contain a child <idnTable:infData> element
   that identifies the idnTable namespace.  The <idnTable:infData>
   element in the Domain Info Form contains the <idnTable:domain>
   element that contains the following child elements:

   <idnTable:name>  The fully qualified name of the domain object, as
       defined in Section 2.2.  The element MUST contain a "valid"
       attribute whose value indicates whether the domain name is valid
       according to the server IDN Tables and IDN policies.  A value of
       "1" or "true" means that the domain name is valid according to
       the server IDN Tables and policies.  A value of "0" or "false"
       means that the domain name is not valid according to the server
       IDN Tables and policies.  The element MAY contain an "idnmap"



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       attribute value that indicates whether the server requires the
       use of the IDN mapping extension [I-D.ietf-eppext-idnmap] with a
       domain create of the domain name.  A value of "1" or "true" means
       that the IDN mapping extension [I-D.ietf-eppext-idnmap] is
       required using one of the <idnTable:table> <idnTable:name>
       values.  A value of "0" or "false" means that the IDN mapping
       extension [I-D.ietf-eppext-idnmap] is not required.
   <idnTable:uname> or <idnTable:aname>  OPTIONAL U-label or A-label
       form of the domain name value of the <idnTable:name> element in
       the opposite form, as defined in Section 2.2.
   <idnTable:table>  Zero or more OPTIONAL <idnTable:table> elements
       that provide the IDN Table meta-data information.  The
       <idnTable:table> element contains the following child elements:


       <idnTable:name>  Server defined IDN Table Identifier, as defined
           in Section 2.1.
       <idnTable:type>  The type of the IDN Table with the possible
           values of "language", to reflect a Language IDN Table, and
           "script", to reflect a Script IDN Table.
       <idnTable:description>  Server defined description of the IDN
           Table.  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).
       <idnTable:variantGen>  OPTIONAL boolean flag indicating that
           domains created using the IDN Table will have IDN variants
           generated.  The management of variants is up to server
           policy.





















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   Example Domain Info Form <info> response for a U-label Domain Name:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:infData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:        <idnTable:domain>
   S:          <idnTable:name valid="true">idn1.example
   S:          </idnTable:name>
   S:          <idnTable:aname>xn--idn1.example</idnTable:aname>
   S:          <idnTable:table>
   S:            <idnTable:name>THAI</idnTable:name>
   S:            <idnTable:type>script</idnTable:type>
   S:            <idnTable:description lang="en">Thai
   S:            </idnTable:description>
   S:            <idnTable:variantGen>false</idnTable:variantGen>
   S:          </idnTable:table>
   S:        </idnTable:domain>
   S:      </idnTable:infData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>




















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   Example Domain Info Form <info> response for an A-label Domain Name:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:infData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:        <idnTable:domain>
   S:          <idnTable:name valid="true" idnmap="true">
   S:          xn--idn1.example
   S:          </idnTable:name>
   S:          <idnTable:uname>idn1.example</idnTable:uname>
   S:          <idnTable:table>
   S:            <idnTable:name>CHI</idnTable:name>
   S:            <idnTable:type>language</idnTable:type>
   S:            <idnTable:description>Chinese (CHI)
   S:            </idnTable:description>
   S:            <idnTable:variantGen>true</idnTable:variantGen>
   S:          </idnTable:table>
   S:          <idnTable:table>
   S:            <idnTable:name>JPN</idnTable:name>
   S:            <idnTable:type>language</idnTable:type>
   S:            <idnTable:description>Japanese (JPN)
   S:            </idnTable:description>
   S:            <idnTable:variantGen>false</idnTable:variantGen>
   S:          </idnTable:table>
   S:        </idnTable:domain>
   S:      </idnTable:infData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.2.2.  Table Info Form

   The Table Info Form is used to retrieve information associated with
   an IDN Table object.  The information provided meta-data about the
   IDN Table object.

   In addition to the standard EPP command elements, the <info> command
   MUST contain an <idnTable:info> element that identifies the



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   idnTable namespace.  The <idnTable:info> element in the Table Info
   Form contains the following child elements:

   <idnTable:table>  Contains the IDN Table Identifier, as defined in
       Section 2.1, of the IDN Table object to be queried.

   Example Table Info Form <info> command for the "CHI" IDN
   Table Identifier, which represents a Language IDN Table:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <idnTable:info
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:table>CHI</idnTable:table>
   C:      </idnTable:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   Example Table Info Form <info> command for the "THAI" IDN
   Table Identifier, which represents a Script IDN Table:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <idnTable:info
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:table>THAI</idnTable:table>
   C:      </idnTable:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When an <info> command has been processed successfully, the EPP
   <resData> element MUST contain a child <idnTable:infData> element
   that identifies the idnTable namespace.  The <idnTable:infData>
   element in the Table Info Form contains the <idnTable:table> element
   that contains the following child elements:

   <idnTable:name>  Server defined IDN Table Identifier, as defined in
       Section 2.1.





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   <idnTable:type>  The type of the IDN Table with the possible values
       of "language", to reflect a Language IDN Table, and "script", to
       reflect a Script IDN Table.
   <idnTable:description>  Server defined description of the IDN Table.
       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).
   <idnTable:upDate>  Contains the date and time that the IDN Table was
       created or last updated.
   <idnTable:version>  OPTIONAL server defined version number of the IDN
       Table.
   <idnTable:effectiveDate>  OPTIONAL effective date for the IDN Table.
   <idnTable:variantGen>  OPTIONAL boolean flag indicating that domains
       created using the IDN Table will have IDN variants generated.
       The management of variants is up to server policy.
   <idnTable:url>  OPTIONAL URL for downloading the IDN Table with the
       applicable set of code points and rules.

































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   Example Table Info Form <info> response for the "CHI" IDN
   Table Identifier, which represents a Language IDN Table:


   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:infData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:        <idnTable:table>
   S:           <idnTable:name>CHI</idnTable:name>
   S:           <idnTable:type>language</idnTable:type>
   S:           <idnTable:description lang="en">Chinese (CHI)
   S:           </idnTable:description>
   S:           <idnTable:upDate>2015-02-04T09:30:00.0Z
   S:           </idnTable:upDate>
   S:           <idnTable:version>1.0</idnTable:version>
   S:           <idnTable:effectiveDate>2014-11-24
   S:           </idnTable:effectiveDate>
   S:           <idnTable:variantGen>true</idnTable:variantGen>
   S:           <idnTable:url>
   S:   https://www.iana.org/domains/idn-tables/tables/tld_chi_1.0.txt
   S:           </idnTable:url>
   S:         </idnTable:table>
   S:      </idnTable:infData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>















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   Example Table Info Form <info> response for the "THAI" IDN
   Table Identifier, which represents a Script IDN Table:


   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:infData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:        <idnTable:table>
   S:           <idnTable:name>THAI</idnTable:name>
   S:           <idnTable:type>script</idnTable:type>
   S:           <idnTable:description>Thai</idnTable:description>
   S:           <idnTable:upDate>2014-08-16T09:20:00.0Z
   S:           </idnTable:upDate>
   S:           <idnTable:version>1.0</idnTable:version>
   S:           <idnTable:effectiveDate>2014-11-24
   S:           </idnTable:effectiveDate>
   S:           <idnTable:variantGen>false</idnTable:variantGen>
   S:           <idnTable:url>
   S:  https://www.iana.org/domains/idn-tables/tables/tld_thai_1.0.txt
   S:           </idnTable:url>
   S:         </idnTable:table>
   S:      </idnTable:infData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.2.3.  List Info Form

   The List Info Form is used to retrieve the list of IDN Tables
   supported by the server.  The list of IDN Table Identifiers MAY be
   used to query for the IDN Table information using the Table Info Form
   (Section 3.1.2.2).

   In addition to the standard EPP command elements, the <info> command
   MUST contain an <idnTable:info> element that identifies the
   idnTable namespace.  The <idnTable:info> element in the List Info
   Form contains the following child elements:




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   <idnTable:list>  Empty element used as a marker to the server of the
       List Info Form to retrieve the list of IDN Tables.

   Example List Info Form <info> command:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <idnTable:info
   C:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   C:        <idnTable:list/>
   C:      </idnTable:info>
   C:    </info>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   When an <info> command has been processed successfully, the EPP
   <resData> element MUST contain a child <idnTable:infData> element
   that identifies the idnTable namespace.  The <idnTable:infData>
   element in the List Info Form contains the <idnTable:list> element
   that contains the following child elements:

   <idnTable:table>  Zero or more <idnTable:table> elements that contain
       the following child elements:


       <idnTable:name>  Server defined IDN Table Identifier, as defined
           in Section 2.1, that is supported by the server.  The
           <idnTable:table> element value MAY be used as the value of
           the <idnTable:table> element value in the Table Info Form
           (Section 3.1.2.2) <info> command to retrieve the information
           on the IDN Table.
       <idnTable:upDate>  Contains the date and time that the IDN
           Table was created or last updated.  This element can be used
           to determine whether a client-side cache needs to be
           refreshed for the IDN Table using the Table Info Form
           (Section 3.1.2.2).












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   Example List Info Form <info> response that contains three IDN
   Table Identifiers:


   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <idnTable:infData
   S:       xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0">
   S:        <idnTable:list>
   S:           <idnTable:table>
   S:              <idnTable:name>CHI</idnTable:name>
   S:              <idnTable:upDate>2015-02-04T09:30:00.0Z
   S:              </idnTable:upDate>
   S:           </idnTable:table>
   S:           <idnTable:table>
   S:              <idnTable:name>JPN</idnTable:name>
   S:              <idnTable:upDate>2015-01-01T09:40:00.0Z
   S:              </idnTable:upDate>
   S:           </idnTable:table>
   S:           <idnTable:table>
   S:              <idnTable:name>THAI</idnTable:name>
   S:              <idnTable:upDate>2014-08-16T09:20:00.0Z
   S:              </idnTable:upDate>
   S:           </idnTable:table>
   S:         </idnTable:list>
   S:      </idnTable:infData>
   S:    </resData>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54321-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.3.  EPP <transfer> Command

   Transfer semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <transfer> command.








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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

   Create semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <create> command.

3.2.2.  EPP <delete> Command

   Delete semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <delete> command.

3.2.3.  EPP <renew> Command

   Renewal semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <renew> command.

3.2.4.  EPP <transfer> Command

   Transfer semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <transfer> command.

3.2.5.  EPP <update> Command

   Update semantics do not apply to IDN table objects, so there is no
   mapping defined for the EPP <update> command.

4.  Formal Syntax

   One schema is presented here that is the EPP IDN Table Mapping
   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.








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4.1.  IDN Table Mapping Schema

   BEGIN
   <?xml version="1.0" encoding="UTF-8"?>
   <schema targetNamespace="urn:ietf:params:xml:ns:idnTable-1.0"
     xmlns:idnTable="urn:ietf:params:xml:ns:idnTable-1.0"
     xmlns:eppcom="urn:ietf:params:xml:ns:eppcom-1.0"
     xmlns="http://www.w3.org/2001/XMLSchema"
     elementFormDefault="qualified">

     <annotation>
       <documentation>
         Extensible Provisioning Protocol v1.0
         IDN Table Mapping.
       </documentation>
     </annotation>

     <!-- imports -->
     <import namespace="urn:ietf:params:xml:ns:eppcom-1.0"
       schemaLocation="eppcom-1.0.xsd"/>

     <!--
     Child elements found in EPP commands.
     -->
     <element name="check" type="idnTable:checkType"/>
     <element name="info" type="idnTable:infoType"/>

     <!--
      Form of the domain name.
      -->
     <simpleType name="domainFormType">
       <restriction base="token">
         <enumeration value="aLabel"/>
         <enumeration value="uLabel"/>
       </restriction>
     </simpleType>

     <!--
      Domain label element.
     -->
     <complexType name="domainLabelType">
       <simpleContent>
         <extension base="eppcom:labelType">
           <attribute name="form" type="idnTable:domainFormType"
             default="aLabel"/>
         </extension>
       </simpleContent>
     </complexType>



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     <!--
     Child elements of check command.
     -->
     <complexType name="checkType">
       <sequence>
         <choice>
           <element name="table" type="eppcom:minTokenType"
             maxOccurs="unbounded"/>
           <element name="domain" type="idnTable:domainLabelType"
             maxOccurs="unbounded"/>
         </choice>
       </sequence>
     </complexType>


     <!--
     Child elements of info command.
     -->
     <complexType name="infoType">
       <sequence>
         <choice>
           <element name="table" type="eppcom:minTokenType"/>
           <element name="domain" type="idnTable:domainLabelType"/>
           <element name="list"/>
         </choice>
       </sequence>
     </complexType>


     <!--
     Child response elements.
     -->
     <element name="chkData" type="idnTable:chkDataType"/>
     <element name="infData" type="idnTable:infDataType"/>

     <!--
     Child elements of check response.
     -->
     <complexType name="chkDataType">
       <sequence>
         <choice>
           <element name="table" type="idnTable:chkTableType"
             maxOccurs="unbounded"/>
           <element name="domain" type="idnTable:chkDomainType"
             maxOccurs="unbounded"/>
         </choice>
       </sequence>
     </complexType>



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     <!--
     Table check response element
     -->
     <complexType name="chkTableType">
       <simpleContent>
         <extension base="eppcom:minTokenType">
           <attribute name="exists" type="boolean" use="required"/>
         </extension>
       </simpleContent>
     </complexType>


     <!--
     Domain name check response element
     -->
     <complexType name="domainNameType">
       <simpleContent>
         <extension base="eppcom:labelType">
           <attribute name="valid" type="boolean" use="required"/>
           <attribute name="idnmap" type="boolean" default="true"/>
         </extension>
       </simpleContent>
     </complexType>

     <!--
     Domain check response element
     -->
     <complexType name="chkDomainType">
       <sequence>
         <element name="name" type="idnTable:domainNameType"/>
         <choice>
           <element name="reason" type="eppcom:reasonType"/>
           <element name="table" type="eppcom:minTokenType"
             maxOccurs="unbounded"/>
         </choice>
       </sequence>
     </complexType>


     <!--
     Child elements of info response.
     -->
     <complexType name="infDataType">
       <sequence>
         <choice>
           <element name="table" type="idnTable:infTableType"/>
           <element name="domain" type="idnTable:infDomainType"/>
           <element name="list" type="idnTable:infListType"/>



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         </choice>
       </sequence>
     </complexType>

     <!--
     Table types
     -->
     <simpleType name="tableTypeEnumType">
       <restriction base="token">
         <enumeration value="language"/>
         <enumeration value="script"/>
       </restriction>
     </simpleType>

     <complexType name="descriptionType">
       <simpleContent>
         <extension base="token">
           <attribute name="lang" type="language"/>
         </extension>
       </simpleContent>
     </complexType>


     <!--
     Table info response information
     -->
     <complexType name="infTableType">
       <sequence>
         <element name="name" type="eppcom:minTokenType"/>
         <element name="type" type="idnTable:tableTypeEnumType"/>
         <element name="description" type="idnTable:descriptionType"/>
         <element name="upDate" type="dateTime"/>
         <element name="version" type="token" minOccurs="0"/>
         <element name="effectiveDate" type="date" minOccurs="0"/>
         <element name="variantGen" type="boolean" minOccurs="0"/>
         <element name="url" type="anyURI" minOccurs="0"/>
       </sequence>
     </complexType>

     <!--
     Domain info response information
     -->
     <complexType name="infDomainType">
       <sequence>
         <element name="name" type="idnTable:domainNameType"/>
         <choice minOccurs="0">
           <element name="uname" type="eppcom:labelType"/>
           <element name="aname" type="eppcom:labelType"/>



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         </choice>
         <element name="table" type="idnTable:infDomainTableType"
           minOccurs="0" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

     <!--
     Domain table info response information
     -->
     <complexType name="infDomainTableType">
       <sequence>
         <element name="name" type="eppcom:minTokenType"/>
         <element name="type" type="idnTable:tableTypeEnumType"/>
         <element name="description" type="idnTable:descriptionType"/>
         <element name="variantGen" type="boolean" minOccurs="0"/>
       </sequence>
     </complexType>


     <!--
     Table list info response information.
     -->
     <complexType name="infListType">
       <sequence>
         <element name="table" type="idnTable:infListTableType"
           minOccurs="0" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

     <!--
     Table elements in list info form.
     -->
     <complexType name="infListTableType">
       <sequence>
         <element name="name" type="eppcom:minTokenType"/>
         <element name="upDate" type="dateTime"/>
       </sequence>
     </complexType>

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

5.  IANA Considerations







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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 is requested of IANA:

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

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

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

5.2.  EPP Extension Registry

   The EPP extension described in this document should be registered by
   the IANA in the EPP Extension Registry described in [RFC7451].  The
   details of the registration are as follows:

   Name of Extension: "Extensible Provisioning Protocol (EPP)
   Internationalized Domain Name (IDN) Table Mapping"

   Document status: Standards Track

   Reference: (insert reference to RFC version of this document)

   Registrant Name and Email Address: IESG, <iesg@ietf.org>

   TLDs: Any

   IPR Disclosure: None

   Status: Active

   Notes: None

6.  Implementation Status

   Note to RFC Editor: Please remove this section and the reference to
   RFC 7942 [RFC7942] before publication.

   This section records the status of known implementations of the
   protocol defined by this specification at the time of posting of this
   Internet-Draft, and is based on a proposal described in RFC 7942
   [RFC7942].  The description of implementations in this section is
   intended to assist the IETF in its decision processes in progressing
   drafts to RFCs.  Please note that the listing of any individual
   implementation here does not imply endorsement by the IETF.



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   Furthermore, no effort has been spent to verify the information
   presented here that was supplied by IETF contributors.  This is not
   intended as, and must not be construed to be, a catalog of available
   implementations or their features.  Readers are advised to note that
   other implementations may exist.

   According to RFC 7942 [RFC7942], "this will allow reviewers and
   working groups to assign due consideration to documents that have the
   benefit of running code, which may serve as evidence of valuable
   experimentation and feedback that have made the implemented protocols
   more mature.  It is up to the individual working groups to use this
   information as they see fit".

6.1.  Verisign EPP SDK

   Organization: Verisign Inc.

   Name: Verisign EPP SDK

   Description: The Verisign EPP SDK includes both a full client
   implementation and a full server stub implementation of draft-gould-
   idn-table.

   Level of maturity: Production

   Coverage: All aspects of the protocol are implemented.

   Licensing: GNU Lesser General Public License

   Contact: jgould@verisign.com

   URL: https://www.verisign.com/en_US/channel-resources/domain-
   registry-products/epp-sdks

7.  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.

8.  References

8.1.  Normative References







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   [I-D.ietf-eppext-idnmap]
              Obispo, F., "Internationalized Domain Name Mapping
              Extension for the Extensible Provisioning Protocol (EPP)",
              draft-ietf-eppext-idnmap-02 (work in progress), January
              2015.

   [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>.

   [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>.

   [RFC5890]  Klensin, J., "Internationalized Domain Names for
              Applications (IDNA): Definitions and Document Framework",
              RFC 5890, DOI 10.17487/RFC5890, August 2010,
              <https://www.rfc-editor.org/info/rfc5890>.

   [RFC7942]  Sheffer, Y. and A. Farrel, "Improving Awareness of Running
              Code: The Implementation Status Section", BCP 205,
              RFC 7942, DOI 10.17487/RFC7942, July 2016,
              <https://www.rfc-editor.org/info/rfc7942>.

8.2.  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>.

Appendix A.  Change History

A.1.  Change from 00 to 01

   1.  Amended XML Namespace section of IANA Considerations, added EPP
       Extension Registry section.





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A.2.  Change from 01 to 02

   1.  Removed support for returning the idnTable:codePoint and
       idnTable:codeRange elements in the table info response based on
       the feedback at the Registration Operations Workshop (ROW), held
       on March 22, 2015, prior to IETF-92.
   2.  Fixed info command samples that referenced the <check> element
       instead of the <info> element.

A.3.  Change from 02 to 03

   1.  Ping update.

A.4.  Change from 03 to 04

   1.  Ping update.

A.5.  Change from 04 to 05

   1.  Ping update.

A.6.  Change from 05 to 06

   1.  Moved RFC 7451 to an informational reference based on a check
       done by the Idnits Tool.

A.7.  Change from 06 to 07

   1.  Added the Implementation Status section.

Authors' Addresses

   James Gould
   VeriSign, Inc.
   12061 Bluemont Way
   Reston, VA  20190
   US

   Email: jgould@verisign.com
   URI:   http://www.verisigninc.com











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   Francisco Obispo
   Uniregistry Corp.
   3-110 Governors Square
   Grand Cayman, Grand Cayman  KY1-1108
   KY

   Email: fobispo@uniregistry.com
   URI:   http://www.uniregistry.com/


   Luis Enrique Munoz
   Uniregistry Corp.
   3-110 Governors Square
   Grand Cayman, Grand Cayman  KY1-1108
   KY

   Email: fobispo@uniregistry.com
   URI:   http://www.uniregistry.com/

































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