| J. Gould | |
| M. Jain | |
| VeriSign, Inc. | |
| May 1, 2014 |
Low Balance Mapping for the Extensible Provisioning Protocol (EPP)
verisign_epp-extension_low-balance_v01
This document describes an Extensible Provisioning Protocol (EPP) mapping for the Low Balance Poll Notification used when an account reaches or goes below the credit threshold.
COPYRIGHT NOTIFICATION
Copyright 2013 VeriSign, Inc. All rights reserved. VERISIGN; the Verisign logo; and other trademarks, service marks and Verisign designs are registered or unregistered trademarks of VeriSign Inc. and its subsidiaries in the United States and foreign countries. Copyright laws and international treaties protect this document, and any Verisign product to which it relates.
VERISIGN PROPRIETARY INFORMATION
This document is the property of VeriSign, Inc. and its subsidiaries (together "Verisign") It may be used by recipient only for the purpose for which it was transmitted and must be returned upon request or when no longer needed by recipient. It may not be copied or communicated without the prior written consent of Verisign.
NOTICE AND CAUTION
Concerning U.S. Patent or Trademark Rights
Verisign and other trademarks, service marks and logos are registered or unregistered trademarks of Verisign and its subsidiaries in the United States and in foreign countries. The inclusion in this document, the associated on-line file or the associated software of any information covered by any other patent, trademark or service mark rights does not constitute nor imply a grant of or authority to exercise, any right or privilege protected by such patent, trademark or service mark. All such rights and privileges are vested in the patent, trademark or service mark owner and no other person may exercise such rights without express permission, authority or license secured from the patent, trademark or service mark owner.
This document describes an extension mapping for version 1.0 of the Extensible Provisioning Protocol (EPP) [RFC5730]. This EPP extension supports the poll message created by the server when an account reaches or goes below the credit threshold.
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].
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.
"lowbalance-poll-1.0" is used as an abbreviation for "http://www.verisign.com/epp/lowbalance-poll-1.0". The XML namespace prefix "lowbalance-poll" 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.
The EPP Low Balance Poll has attributes and associated values that may be viewed by the sponsoring client or server. This section describes each attribute type in detail.
All of the currency attributes including the creditLimit, creditThreshold (FIXED), and availableCredit use the XML normalizedString data type to represent the currency value in the currency of the server.
A detailed description of the EPP syntax and semantics can be found in the EPP core protocol specification [RFC5730]. The command mapping described here is specifically for use to notify of low balance situations.
The EPP <poll> command and response is defined in section 2.9.2.3 of [RFC5730]. The Low Balance Notification is included in the EPP <poll> response of [RFC5730].
For the Low Balance Notification, poll messages apply whenever the available credit for an account reaches or goes below the credit threshold. In the case of a Low Balance specific message, a <lowbalance-poll:pollData> element will be included within the <resData> element of the standard <poll> response. The <lowbalance-poll:pollData> element will include a reference to the Low Balance namespace. EPP data contained within the <lowbalance-poll:pollData> element is formatted according to the lowbalance-poll schema.
Example <poll> 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: <poll op="req"/> C: <clTRID>ABC-12345</clTRID> C: </command> C:</epp>
An Low Balance Poll Message consists of the <lowbalance-poll:pollData> element with the following child elements:
Example <poll> response with the Low Balance Poll Message:
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="1301"> S: <msg>Command completed successfully; ack to dequeue</msg> S: </result> S: <msgQ count="1" id="12345"> S: <qDate>2013-03-25T18:20:07.0078Z</qDate> S: <msg>Low Account Balance</msg> S: </msgQ> S: <resData> S: <lowbalance-poll:pollData S: xmlns:lowbalance-poll= S: "http://www.verisign.com/epp/lowbalance-poll-1.0"> S: <lowbalance-poll:registrarName>Test Registar S: </lowbalance-poll:registrarName> S: <lowbalance-poll:creditLimit>1000 S: </lowbalance-poll:creditLimit> S: <lowbalance-poll:creditThreshold type="PERCENT">10 S: </lowbalance-poll:creditThreshold> S: <lowbalance-poll:availableCredit>80 S: </lowbalance-poll:availableCredit> S: </lowbalance-poll:pollData> S: </resData> S: <trID> S: <clTRID>ABC-12345</clTRID> S: <svTRID>54322-XYZ</svTRID> S: </trID> S: </response> S:</epp>
One schema is presented here that is the Low Balance Poll 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.
BEGIN
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace=
"http://www.verisign.com/epp/lowbalance-poll-1.0"
xmlns:lowbalance-poll=
"http://www.verisign.com/epp/lowbalance-poll-1.0"
xmlns:eppcom="urn:ietf:params:xml:ns:eppcom-1.0"
xmlns="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
<!-- Import common element types.-->
<import namespace="urn:ietf:params:xml:ns:eppcom-1.0"
schemaLocation="eppcom-1.0.xsd"/>
<annotation>
<documentation>
Extensible Provisioning Protocol v1.0
VeriSign poll notification specification
for low balance notifications.
</documentation>
</annotation>
<!--Child elements found in EPP commands.-->
<element name="pollData"
type="lowbalance-poll:pollDataType"/>
<!--Child elements of the <notifyData>
element for the low balance.-->
<complexType name="pollDataType">
<sequence>
<element name="registrarName"
type="eppcom:labelType"/>
<element name="creditLimit"
type="normalizedString"/>
<element name="creditThreshold"
type="lowbalance-poll:thresholdType"/>
<element name="availableCredit"
type="normalizedString"/>
</sequence>
</complexType>
<complexType name="thresholdType">
<simpleContent>
<extension base="normalizedString">
<attribute name="type"
type="lowbalance-poll:thresholdValueType"
use="required"/>
</extension>
</simpleContent>
</complexType>
<simpleType name="thresholdValueType">
<restriction base="token">
<enumeration value="FIXED"/>
<enumeration value="PERCENT"/>
</restriction>
</simpleType>
<!-- End of schema.-->
</schema>
END
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.
| [RFC2119] | Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. |
| [RFC5730] | Hollenbeck, S., "Extensible Provisioning Protocol (EPP)", STD 69, RFC 5730, August 2009. |