RFC 3730
Extensible Provisioning Protocol (EPP)
3. Result Codes
EPP result codes are based on the theory of reply codes described in section 4.2.1 of [RFC2821]. EPP uses four decimal digits to describe the success or failure of each EPP command. Each of the digits of the reply have special significance. The first digit denotes command success or failure. The second digit denotes the response category, such as command syntax or security. The third and fourth digits provide explicit response detail within each response category. There are two values for the first digit of the reply code: 1yzz Positive completion reply. The command has been accepted and processed by the system without error. 2yzz Negative completion reply. The command was not accepted and the requested action did not occur.
The second digit groups responses into one of six specific categories: x0zz Protocol Syntax x1zz Implementation-specific Rules x2zz Security x3zz Data Management x4zz Server System x5zz Connection Management The third and fourth digits provide response detail within the categories defined by the first and second digits. Specific result codes are listed in the table below. Every EPP response MUST include a result code and a human-readable description of the result code. The language used to represent the description MAY be identified using an instance of the "lang" attribute within the <msg> element. If not specified, the default language is English, identified as "en". A description of the structure of valid values for the "lang" attribute is described in [RFC3066]. Response text MAY be translated into other languages, though the translation MUST preserve the meaning of the code as described here. Response code values MUST NOT be changed when translating text. Response text in the table below is enclosed in quotes to clearly mark the beginning and ending of each response string. Quotes MUST NOT be used to delimit these strings when returning response text via the protocol.
Successful command completion responses: Code Response text in English ___________________________________ 1000 "Command completed successfully" This is the usual response code for a successfully completed command that is not addressed by any other 1xxx-series response code. 1001 "Command completed successfully; action pending" This response code MUST be returned when responding to a command the requires offline activity before the requested action can be completed. See section 2 for a description of other processing requirements. 1300 "Command completed successfully; no messages" This response code MUST be returned when responding to a <poll> request command and the server message queue is empty. 1301 "Command completed successfully; ack to dequeue" This response code MUST be returned when responding to a <poll> request command and a message has been retrieved from the server message queue. 1500 "Command completed successfully; ending session" This response code MUST be returned when responding to a successful <logout> command.
Command error responses: Code Response text in English ___________________________________ 2000 "Unknown command" This response code MUST be returned when a server receives a command element that is not defined by EPP. 2001 "Command syntax error" This response code MUST be returned when a server receives an improperly formed command element. 2002 "Command use error" This response code MUST be returned when a server receives a properly formed command element, but the command can not be executed due to a sequencing or context error. For example, a <logout> command can not be executed without having first completed a <login> command. 2003 "Required parameter missing" This response code MUST be returned when a server receives a command for which a required parameter value has not been provided. 2004 "Parameter value range error" This response code MUST be returned when a server receives a command parameter whose value is outside the range of values specified by the protocol. The error value SHOULD be returned via a <value> element in the EPP response. 2005 "Parameter value syntax error" This response code MUST be returned when a server receives a command containing a parameter whose value is improperly formed. The error value SHOULD be returned via a <value> element in the EPP response. 2100 "Unimplemented protocol version" This response code MUST be returned when a server receives a command element specifying a protocol version that is not implemented by the server. 2101 "Unimplemented command" This response code MUST be returned when a server receives a valid EPP command element that is not implemented by the server. For example, a <transfer> command can be unimplemented for certain object types.
2102 "Unimplemented option" This response code MUST be returned when a server receives a valid EPP command element that contains a protocol option that is not implemented by the server. 2103 "Unimplemented extension" This response code MUST be returned when a server receives a valid EPP command element that contains a protocol command extension that is not implemented by the server. 2104 "Billing failure" This response code MUST be returned when a server attempts to execute a billable operation and the command can not be completed due to a client billing failure. 2105 "Object is not eligible for renewal" This response code MUST be returned when a client attempts to <renew> an object that is not eligible for renewal in accordance with server policy. 2106 "Object is not eligible for transfer" This response code MUST be returned when a client attempts to <transfer> an object that is not eligible for transfer in accordance with server policy. 2200 "Authentication error" This response code MUST be returned when a server notes an error when validating client credentials. 2201 "Authorization error" This response code MUST be returned when a server notes a client authorization error when executing a command. This error is used to note that a client lacks privileges to execute the requested command. 2202 "Invalid authorization information" This response code MUST be returned when a server receives invalid command authorization information required to confirm authorization to execute a command. This error is used to note that a client has the privileges required to execute the requested command, but the authorization information provided by the client does not match the authorization information archived by the server. 2300 "Object pending transfer" This response code MUST be returned when a server receives a command to transfer an object that is pending transfer due to an earlier transfer request.
2301 "Object not pending transfer" This response code MUST be returned when a server receives a command to confirm, reject, or cancel the transfer an object when no command has been made to transfer the object. 2302 "Object exists" This response code MUST be returned when a server receives a command to create an object that already exists in the repository. 2303 "Object does not exist" This response code MUST be returned when a server receives a command to query or transform an object that does not exist in the repository. 2304 "Object status prohibits operation" This response code MUST be returned when a server receives a command to transform an object that can not be completed due to server policy or business practices. For example, a server can disallow <transfer> commands under terms and conditions that are matters of local policy, or the server might have received a <delete> command for an object whose status prohibits deletion. 2305 "Object association prohibits operation" This response code MUST be returned when a server receives a command to transform an object that can not be completed due to dependencies on other objects that are associated with the target object. For example, a server can disallow <delete> commands while an object has active associations with other objects. 2306 "Parameter value policy error" This response code MUST be returned when a server receives a command containing a parameter value that is syntactically valid, but semantically invalid due to local policy. For example, the server can support a subset of a range of valid protocol parameter values. The error value SHOULD be returned via a <value> element in the EPP response. 2307 "Unimplemented object service" This response code MUST be returned when a server receives a command to operate on an object service that is not supported by the server. 2308 "Data management policy violation" This response code MUST be returned when a server receives a command whose execution results in a violation of server data management policies. For example, removing all attribute values or object associations from an object might be a violation of a server's data management policies.
2400 "Command failed" This response code MUST be returned when a server is unable to execute a command due to an internal server error that is not related to the protocol. The failure can be transient. The server MUST keep any ongoing session active. 2500 "Command failed; server closing connection" This response code MUST be returned when a server receives a command that can not be completed due to an internal server error that is not related to the protocol. The failure is not transient, and will cause other commands to fail as well. The server MUST end the active session and close the existing connection. 2501 "Authentication error; server closing connection" This response code MUST be returned when a server notes an error when validating client credentials and a server-defined limit on the number of allowable failures has been exceeded. The server MUST close the existing connection. 2502 "Session limit exceeded; server closing connection" This response code MUST be returned when a server receives a <login> command, and the command can not be completed because the client has exceeded a system-defined limit on the number of sessions that the client can establish. It might be possible to establish a session by ending existing unused sessions and closing inactive connections.4. Formal Syntax
EPP is specified in XML Schema notation. The formal syntax presented here is a complete schema representation of EPP suitable for automated validation of EPP XML instances. Two schemas are presented here. The first schema is the base EPP schema. The second schema defines elements and structures that can be used by both the base EPP schema and object mapping schemas. The BEGIN and END tags are not part of the schema; they are used to note the beginning and ending of the schema for URI registration purposes.
4.1. Base Schema
BEGIN <?xml version="1.0" encoding="UTF-8"?> <schema targetNamespace="urn:ietf:params:xml:ns:epp-1.0" xmlns:epp="urn:ietf:params:xml:ns:epp-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 schema. </documentation> </annotation> <!-- Every EPP XML instance must begin with this element. --> <element name="epp" type="epp:eppType"/> <!-- An EPP XML instance must contain a greeting, hello, command, response, or extension. --> <complexType name="eppType"> <choice> <element name="greeting" type="epp:greetingType"/> <element name="hello"/> <element name="command" type="epp:commandType"/> <element name="response" type="epp:responseType"/> <element name="extension" type="epp:extAnyType"/> </choice> </complexType> <!-- A greeting is sent by a server in response to a client connection or <hello>. --> <complexType name="greetingType"> <sequence>
<element name="svID" type="epp:sIDType"/>
<element name="svDate" type="dateTime"/>
<element name="svcMenu" type="epp:svcMenuType"/>
<element name="dcp" type="epp:dcpType"/>
</sequence>
</complexType>
<!--
Server IDs are strings with minimum and maximum length
restrictions.
-->
<simpleType name="sIDType">
<restriction base="normalizedString">
<minLength value="3"/>
<maxLength value="64"/>
</restriction>
</simpleType>
<!--
A server greeting identifies available object services.
-->
<complexType name="svcMenuType">
<sequence>
<element name="version" type="epp:versionType"
maxOccurs="unbounded"/>
<element name="lang" type="language"
maxOccurs="unbounded"/>
<element name="objURI" type="anyURI"
maxOccurs="unbounded"/>
<element name="svcExtension" type="epp:extURIType"
minOccurs="0"/>
</sequence>
</complexType>
<!--
Data Collection Policy types.
-->
<complexType name="dcpType">
<sequence>
<element name="access" type="epp:dcpAccessType"/>
<element name="statement" type="epp:dcpStatementType"
maxOccurs="unbounded"/>
<element name="expiry" type="epp:dcpExpiryType"
minOccurs="0"/>
</sequence>
</complexType>
<complexType name="dcpAccessType">
<choice>
<element name="all"/>
<element name="none"/>
<element name="null"/>
<element name="other"/>
<element name="personal"/>
<element name="personalAndOther"/>
</choice>
</complexType>
<complexType name="dcpStatementType">
<sequence>
<element name="purpose" type="epp:dcpPurposeType"/>
<element name="recipient" type="epp:dcpRecipientType"/>
<element name="retention" type="epp:dcpRetentionType"/>
</sequence>
</complexType>
<complexType name="dcpPurposeType">
<sequence>
<element name="admin"
minOccurs="0"/>
<element name="contact"
minOccurs="0"/>
<element name="other"
minOccurs="0"/>
<element name="prov"
minOccurs="0"/>
</sequence>
</complexType>
<complexType name="dcpRecipientType">
<sequence>
<element name="other"
minOccurs="0"/>
<element name="ours" type="epp:dcpOursType"
minOccurs="0" maxOccurs="unbounded"/>
<element name="public"
minOccurs="0"/>
<element name="same"
minOccurs="0"/>
<element name="unrelated"
minOccurs="0"/>
</sequence>
</complexType>
<complexType name="dcpOursType">
<sequence>
<element name="recDesc" type="epp:dcpRecDescType"
minOccurs="0"/>
</sequence>
</complexType>
<simpleType name="dcpRecDescType">
<restriction base="token">
<minLength value="1"/>
<maxLength value="255"/>
</restriction>
</simpleType>
<complexType name="dcpRetentionType">
<choice>
<element name="business"/>
<element name="indefinite"/>
<element name="legal"/>
<element name="none"/>
<element name="stated"/>
</choice>
</complexType>
<complexType name="dcpExpiryType">
<choice>
<element name="absolute" type="dateTime"/>
<element name="relative" type="duration"/>
</choice>
</complexType>
<!--
Extension framework types.
-->
<complexType name="extAnyType">
<sequence>
<any namespace="##other"
maxOccurs="unbounded"/>
</sequence>
</complexType>
<complexType name="extURIType">
<sequence>
<element name="extURI" type="anyURI"
maxOccurs="unbounded"/>
</sequence>
</complexType>
<!--
An EPP version number is a dotted pair of decimal numbers.
-->
<simpleType name="versionType">
<restriction base="token">
<pattern value="[1-9]+\.[0-9]+"/>
<enumeration value="1.0"/>
</restriction>
</simpleType>
<!--
Command types.
-->
<complexType name="commandType">
<sequence>
<choice>
<element name="check" type="epp:readWriteType"/>
<element name="create" type="epp:readWriteType"/>
<element name="delete" type="epp:readWriteType"/>
<element name="info" type="epp:readWriteType"/>
<element name="login" type="epp:loginType"/>
<element name="logout"/>
<element name="poll" type="epp:pollType"/>
<element name="renew" type="epp:readWriteType"/>
<element name="transfer" type="epp:transferType"/>
<element name="update" type="epp:readWriteType"/>
</choice>
<element name="extension" type="epp:extAnyType"
minOccurs="0"/>
<element name="clTRID" type="epp:trIDStringType"
minOccurs="0"/>
</sequence>
</complexType>
<!--
The <login> command.
-->
<complexType name="loginType">
<sequence>
<element name="clID" type="eppcom:clIDType"/>
<element name="pw" type="epp:pwType"/>
<element name="newPW" type="epp:pwType"
minOccurs="0"/>
<element name="options" type="epp:credsOptionsType"/>
<element name="svcs" type="epp:loginSvcType"/>
</sequence>
</complexType>
<complexType name="credsOptionsType">
<sequence>
<element name="version" type="epp:versionType"/>
<element name="lang" type="language"/>
</sequence>
</complexType>
<simpleType name="pwType">
<restriction base="token">
<minLength value="6"/>
<maxLength value="16"/>
</restriction>
</simpleType>
<complexType name="loginSvcType">
<sequence>
<element name="objURI" type="anyURI"
maxOccurs="unbounded"/>
<element name="svcExtension" type="epp:extURIType"
minOccurs="0"/>
</sequence>
</complexType>
<!--
The <poll> command.
-->
<complexType name="pollType">
<attribute name="op" type="epp:pollOpType"
use="required"/>
<attribute name="msgID" type="token"/>
</complexType>
<simpleType name="pollOpType">
<restriction base="token">
<enumeration value="ack"/>
<enumeration value="req"/>
</restriction>
</simpleType>
<!--
The <transfer> command. This is object-specific, and uses attributes
to identify the requested operation.
-->
<complexType name="transferType">
<sequence>
<any namespace="##other"/>
</sequence>
<attribute name="op" type="epp:transferOpType"
use="required"/>
</complexType>
<simpleType name="transferOpType">
<restriction base="token">
<enumeration value="approve"/>
<enumeration value="cancel"/>
<enumeration value="query"/>
<enumeration value="reject"/>
<enumeration value="request"/>
</restriction>
</simpleType>
<!--
All other object-centric commands. EPP doesn't specify the syntax or
semantics of object-centric command elements. The elements MUST be
described in detail in another schema specific to the object.
-->
<complexType name="readWriteType">
<sequence>
<any namespace="##other"/>
</sequence>
</complexType>
<complexType name="trIDType">
<sequence>
<element name="clTRID" type="epp:trIDStringType"
minOccurs="0"/>
<element name="svTRID" type="epp:trIDStringType"/>
</sequence>
</complexType>
<simpleType name="trIDStringType">
<restriction base="token">
<minLength value="3"/>
<maxLength value="64"/>
</restriction>
</simpleType>
<!--
Response types.
-->
<complexType name="responseType">
<sequence>
<element name="result" type="epp:resultType"
maxOccurs="unbounded"/>
<element name="msgQ" type="epp:msgQType"
minOccurs="0"/>
<element name="resData" type="epp:extAnyType"
minOccurs="0"/>
<element name="extension" type="epp:extAnyType"
minOccurs="0"/>
<element name="trID" type="epp:trIDType"/>
</sequence>
</complexType>
<complexType name="resultType">
<sequence>
<element name="msg" type="epp:msgType"/>
<choice minOccurs="0" maxOccurs="unbounded">
<element name="value" type="epp:errValueType"/>
<element name="extValue" type="epp:extErrValueType"/>
</choice>
</sequence>
<attribute name="code" type="epp:resultCodeType"
use="required"/>
</complexType>
<complexType name="errValueType" mixed="true">
<sequence>
<any namespace="##any" processContents="skip"/>
</sequence>
<anyAttribute namespace="##any" processContents="skip"/>
</complexType>
<complexType name="extErrValueType">
<sequence>
<element name="value" type="epp:errValueType"/>
<element name="reason" type="epp:msgType"/>
</sequence>
</complexType>
<complexType name="msgQType">
<sequence>
<element name="qDate" type="dateTime"
minOccurs="0"/>
<element name="msg" type="epp:mixedMsgType"
minOccurs="0"/>
</sequence>
<attribute name="count" type="unsignedLong"
use="required"/>
<attribute name="id" type="eppcom:minTokenType"
use="required"/>
</complexType>
<complexType name="mixedMsgType" mixed="true">
<sequence>
<any processContents="skip"
minOccurs="0" maxOccurs="unbounded"/>
</sequence>
<attribute name="lang" type="language"
default="en"/>
</complexType>
<!--
Human-readable text may be expressed in languages other than English.
-->
<complexType name="msgType">
<simpleContent>
<extension base="normalizedString">
<attribute name="lang" type="language"
default="en"/>
</extension>
</simpleContent>
</complexType>
<!--
EPP result codes.
-->
<simpleType name="resultCodeType">
<restriction base="unsignedShort">
<enumeration value="1000"/>
<enumeration value="1001"/>
<enumeration value="1300"/>
<enumeration value="1301"/>
<enumeration value="1500"/>
<enumeration value="2000"/>
<enumeration value="2001"/>
<enumeration value="2002"/>
<enumeration value="2003"/>
<enumeration value="2004"/>
<enumeration value="2005"/>
<enumeration value="2100"/>
<enumeration value="2101"/>
<enumeration value="2102"/>
<enumeration value="2103"/>
<enumeration value="2104"/>
<enumeration value="2105"/>
<enumeration value="2106"/>
<enumeration value="2200"/>
<enumeration value="2201"/>
<enumeration value="2202"/>
<enumeration value="2300"/>
<enumeration value="2301"/>
<enumeration value="2302"/>
<enumeration value="2303"/>
<enumeration value="2304"/>
<enumeration value="2305"/>
<enumeration value="2306"/>
<enumeration value="2307"/>
<enumeration value="2308"/>
<enumeration value="2400"/>
<enumeration value="2500"/>
<enumeration value="2501"/>
<enumeration value="2502"/>
</restriction>
</simpleType>
<!--
End of schema.
-->
</schema>
END
4.2. Shared Structure Schema
BEGIN
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="urn:ietf:params:xml:ns:eppcom-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
shared structures schema.
</documentation>
</annotation>
<!--
Object authorization information types.
-->
<complexType name="pwAuthInfoType">
<simpleContent>
<extension base="normalizedString">
<attribute name="roid" type="eppcom:roidType"/>
</extension>
</simpleContent>
</complexType>
<complexType name="extAuthInfoType">
<sequence>
<any namespace="##other"/>
</sequence>
</complexType>
<!--
<check> response types.
-->
<complexType name="reasonType">
<simpleContent>
<extension base="eppcom:reasonBaseType">
<attribute name="lang" type="language"/>
</extension>
</simpleContent>
</complexType>
<simpleType name="reasonBaseType">
<restriction base="token">
<minLength value="1"/>
<maxLength value="32"/>
</restriction>
</simpleType>
<!--
Abstract client and object identifier type.
-->
<simpleType name="clIDType">
<restriction base="token">
<minLength value="3"/>
<maxLength value="16"/>
</restriction>
</simpleType>
<!--
DNS label type.
-->
<simpleType name="labelType">
<restriction base="token">
<minLength value="1"/>
<maxLength value="255"/>
</restriction>
</simpleType>
<!--
Non-empty token type.
-->
<simpleType name="minTokenType">
<restriction base="token">
<minLength value="1"/>
</restriction>
</simpleType>
<!--
Repository Object IDentifier type.
-->
<simpleType name="roidType">
<restriction base="token">
<pattern value="(\w|_){1,80}-\w{1,8}"/>
</restriction>
</simpleType>
<!--
Transfer status identifiers.
-->
<simpleType name="trStatusType">
<restriction base="token">
<enumeration value="clientApproved"/>
<enumeration value="clientCancelled"/>
<enumeration value="clientRejected"/>
<enumeration value="pending"/>
<enumeration value="serverApproved"/>
<enumeration value="serverCancelled"/>
</restriction>
</simpleType>
<!--
End of schema.
-->
</schema>
END
5. 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. Conformant XML processors recognize
both UTF-8 and UTF-16. 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.
EPP includes a provision for returning a human-readable message with
every result code. This document describes result codes in English,
but the actual text returned with a result MAY be provided in a
language negotiated when a session is established. Languages other
than English MUST be noted through specification of a "lang"
attribute for each message. Valid values for the "lang" attribute
and "lang" negotiation elements are described in [RFC3066].
All date-time values presented via EPP MUST be expressed in Universal Coordinated Time using the Gregorian calendar. XML Schema allows use of time zone identifiers to indicate offsets from the zero meridian, but this option MUST NOT be used with EPP. The extended date-time form using upper case "T" and "Z" characters defined in [RFC3339] 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.6. IANA Considerations
This document uses URNs to describe XML namespaces and XML schemas conforming to a registry mechanism described in [RFC3688]. Four URI assignments have been registered by the IANA. Registration request for the EPP namespace: URI: urn:ietf:params:xml:ns:epp-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 EPP XML schema: URI: urn:ietf:params:xml:schema:epp-1.0 Registrant Contact: See the "Author's Address" section of this document. XML: See the "Base Schema" section of this document. Registration request for the EPP shared structure namespace: URI: urn:ietf:params:xml:ns:eppcom-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 EPP shared structure XML schema: URI: urn:ietf:params:xml:schema:eppcom-1.0
Registrant Contact: See the "Author's Address" section of this
document.
XML: See the "Shared Structure Schema" section of this document.
7. Security Considerations
EPP provides only simple client authentication services. A passive
attack is sufficient to recover client identifiers and passwords,
allowing trivial command forgery. Protection against most common
attacks and more robust security services MUST be provided by other
protocol layers. Specifically, EPP instances MUST be protected using
a transport mechanism or application protocol that provides integrity
and confidentiality.
EPP uses a variant of the PLAIN SASL mechanism described in [RFC2595]
to provide a simple application-layer authentication service that
augments or supplements authentication and identification services
that might be available at other protocol layers. Where the PLAIN
SASL mechanism specifies provision of an authorization identifier,
authentication identifier, and password as a single string separated
by ASCII NUL characters, EPP specifies use of a combined
authorization and authentication identifier and a password provided
as distinct XML elements.
Repeated password guessing attempts can be discouraged by limiting
the number of <login> attempts that can be attempted on an open
connection. A server MAY close an open connection if multiple
<login> attempts are made with either an invalid client identifier,
an invalid password, or both an invalid client identifier and an
invalid password.
EPP uses authentication information associated with objects to
confirm object transfer authority. Authentication information
exchanged between EPP clients and third party entities MUST be
exchanged using a facility that provides privacy and integrity
services to protect against unintended disclosure and modification
while in transit.
8. Acknowledgements
This document was originally written as an individual submission
Internet-Draft. The provreg working group later adopted it as a
working group document and provided many invaluable comments and
suggested improvements. The author wishes to acknowledge the efforts
of WG chairs Edward Lewis and Jaap Akkerhuis for their process and
editorial contributions.
Specific suggestions that have been incorporated into this document were provided by Chris Bason, Eric Brunner-Williams, Jordyn Buchanan, Roger Castillo Cortazar, Dave Crocker, Ayesha Damaraju, Sheer El- Showk, Patrik Faltstrom, James Gould, John Immordino, Dan Kohn, Hong Liu, Klaus Malorny, Dan Manley, Michael Mealling, Patrick Mevzek, Andrew Newton, Budi Rahardjo, Asbjorn Steira, Rick Wesson, and Jay Westerdal.9. References
9.1. Normative References
[RFC2119] Bradner, S., "Key Words for Use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2277] Alvestrand, H., "IETF Policy on Character Sets and Languages", BCP 18, RFC 2277, January 1998. [RFC2279] Yergeau, F., "UTF-8, a transformation format of ISO 10646", RFC 2279, January 1998. [RFC2781] Hoffman, P. and F. Yergeau, "UTF-16, an encoding of ISO 10646", RFC 2781, February 2000. [RFC2914] Floyd, S., "Congestion Control Principles", BCP 41, RFC 2914, September 2000. [RFC3023] Murata, M., St.Laurent, S. and D. Kohn, "XML Media Types", RFC 3023, January 2001. [RFC3066] Alvestrand, H., "Tags for the Identification of Languages", BCP 47, RFC 3066, January 2001. [RFC3339] Klyne, G. and C. Newman, "Date and Time on the Internet: Timestamps", RFC 3339, July 2002. [RFC3375] Hollenbeck, S., "Generic Registry-Registrar Protocol Requirements", RFC 3375, September 2002. [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, January 2004. [XML] Editor T. Bray et al.: "Extensible Markup Language (XML) 1.0 (Second Edition)", W3C Recommendation 6 October 2000. [XMLE] "XML 1.0 Second Edition Specification Errata", E22, 25 July 2001, http://www.w3.org/XML/xml-V10-2e-errata#E22.
[XMLS-1] Editors H. Thompson et al.: "XML Schema Part 1: Structures", W3C Recommendation 2 May 2001. [XMLS-2] Editors P. Biron, A. Malhotra: "XML Schema Part 2: Datatypes", W3C Recommendation 2 May 2001.9.2. Informative References
[P3P] Editor M. Marchiori: "The Platform for Privacy Preferences 1.0 (P3P1.0) Specification", W3C Recommendation 16 April 2002. [RFC793] Postel, J., "Transmission Control Protocol", STD 7, RFC 793, September 1981. [RFC2595] Newman, C., "Using TLS with IMAP, POP3 and ACAP", RFC 2595, June 1999. [RFC2821] Klensin, J., Ed., "Simple Mail Transfer Protocol", RFC 2821, April 2001. [RFC2960] Stewart, R., Xie, Q., Morneault, K., Sharp, C., Schwarzbauer, H., Taylor, T., Rytina, I., Kalla, M., Zhang, L. and V. Paxson, "Stream Control Transmission Protocol", RFC 2960, October 2000. [RFC3080] Rose, M., "The Blocks Extensible Exchange Protocol Core", RFC 3080, March 2001.
Appendix A: Object Mapping Template
This appendix describes a recommended outline for documenting the EPP mapping of an object. Documents that describe EPP object mappings SHOULD describe the mapping in a format similar to the one used here. Additional sections are required if the object mapping is written in Internet-Draft or RFC format. 1. Introduction Provide an introduction that describes the object and an overview of the mapping to EPP. 2. Object Attributes Describe the attributes associated with the object, including references to syntax specifications as appropriate. Examples of object attributes include a name or identifier and dates associated with modification events. 3. EPP Command Mapping 3.1. EPP Query Commands 3.1.1. EPP <check> Command Describe the object-specific mappings required to implement the EPP <check> command. Include both sample commands and sample responses. 3.1.2. EPP <info> Command Describe the object-specific mappings required to implement the EPP <info> command. Include both sample commands and sample responses. 3.1.3. EPP <poll> Command Describe the object-specific mappings required to implement the EPP <poll> command. Include both sample commands and sample responses. 3.1.4. EPP <transfer> Command Describe the object-specific mappings required to implement the EPP <transfer> query command. Include both sample commands and sample responses.
3.2. EPP Transform Commands 3.2.1. EPP <create> Command Describe the object-specific mappings required to implement the EPP <create> command. Include both sample commands and sample responses. Describe the status of the object with respect to time, including expected client and server behavior if a validity period is used. 3.2.2. EPP <delete> Command Describe the object-specific mappings required to implement the EPP <delete> command. Include both sample commands and sample responses. 3.2.3. EPP <renew> Command Describe the object-specific mappings required to implement the EPP <renew> command. Include both sample commands and sample responses. 3.2.4. EPP <transfer> Command Describe the object-specific mappings required to implement the EPP <transfer> command. Include both sample commands and sample responses. 3.2.5. EPP <update> Command Describe the object-specific mappings required to implement the EPP <update> command. Include both sample commands and sample responses. 4. Formal Syntax Provide the XML schema for the object mapping. An XML DTD MUST NOT be used as DTDs do not provide sufficient support for XML namespaces and strong data typing.
Appendix B: Media Type Registration: application/epp+xml
MIME media type name: application MIME subtype name: epp+xml Mandatory parameters: none Optional parameters: Same as the charset parameter of application/xml as specified in [RFC3023]. Encoding considerations: Same as the encoding considerations of application/xml as specified in [RFC3023]. Security considerations: This type has all of the security considerations described in [RFC3023] plus the considerations specified in the Security Considerations section of this document. Interoperability considerations: XML has proven to be interoperable across WebDAV clients and servers, and for import and export from multiple XML authoring tools. For maximum interoperability, validating processors are recommended. Although non-validating processors can be more efficient, they are not required to handle all features of XML. For further information, see sub-section 2.9 "Standalone Document Declaration" and section 5 "Conformance" of [XML]. Published specification: This document. Applications which use this media type: EPP is device-, platform-, and vendor-neutral and is supported by multiple service providers. Additional information: If used, magic numbers, fragment identifiers, base URIs, and use of the BOM should be as specified in [RFC3023]. Magic number(s): None. File extension(s): .xml Macintosh File Type Code(s): "TEXT" Person and email address for further information: See the "Author's Address" section of this document. Intended usage: COMMON Author/Change controller: IETF
Author's Address
Scott Hollenbeck
VeriSign Global Registry Services
21345 Ridgetop Circle
Dulles, VA 20166-6503
USA
EMail: shollenbeck@verisign.com
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