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Extensible Provisioning Protocol (EPP) Transport over QUIC
draft-yao-regext-epp-quic-01

Document Type Active Internet-Draft (individual)
Authors Jiankang Yao , Hongtao Li , Zhiwei Yan , Dan Keathley , James Gould
Last updated 2024-02-18
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draft-yao-regext-epp-quic-01
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                          Client                  Server
                     |                                     |
                     |      Successful QUIC Connection     |
                     | <<------------------------------->> |
                     |                                     |
                     |      Successful QUIC Stream         |
                     | <<------------------------------->> |
                     |                                     |
                     |             Send Greeting           |
                     | <<-------------------------------<< |
                     |                                     |
                     |             Send <login>            |
                     | >>------------------------------->> |
                     |                                     |
                     |             Send Response           |
                     | <<-------------------------------<< |
                     |                                     |
                     |            Send Command X           |
                     | >>------------------------------->> |
                     |                                     |
                     |            Send Response X          |
                     | <<-------------------------------<< |
                     |                                     |
                     |            Send Command Y           |
                     | >>------------------------------->> |
                     |                                     |
                     |            Send Response Y          |
                     | <<-------------------------------<< |
                     |                  .                  |
                                        .
                                        .
                     |            Send <logout>            |
                     | >>------------------------------->> |
                     |                                     |
                     |            Send Response            |
                     | <<-------------------------------<< |
                     |                                     |
                     |          Close QUIC Stream          |
                     | <<------------------------------->> |
                     |                                     |
                     |        Close QUIC Connection        |
                     | <<------------------------------->> |

                  Figure 1: QUIC Client-Server Message Exchange

   The EPP server MUST follow the "EPP Server State Machine" procedure
   described in [RFC5730].

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5.  Data Unit Format

   The EPP data unit contains two fields: a 32-bit header that describes
   the total length of the data unit, and the EPP XML instance.  The
   length of the EPP XML instance is determined by subtracting four
   octets from the total length of the data unit.  A receiver must
   successfully read that many octets to retrieve the complete EPP XML
   instance before processing the EPP message.  EPP Data Unit Format
   (one tick mark represents one bit position):

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                           Total Length                        |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                         EPP XML Instance                      |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+//-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Total Length (32 bits): The total length of the EPP data unit
   measured in octets in network (big endian) byte order.  The octets
   contained in this field MUST be included in the total length
   calculation.  EPP XML Instance (variable length): The EPP XML
   instance carried in the data unit.

6.  Transport Considerations

   Section 2.1 of [RFC5730] describes considerations to be addressed by
   protocol transport mappings.  This document addresses each of those
   considerations using a combination of features of the QUIC protocol
   itself and features of this document.

   *  Command Order: QUIC guarantees ordered processing of data within
      each stream.  Section 2 of [RFC9000] describes streams in detail.

   *  Session Mapping: EPP session management utilizes QUIC streams and
      is described in Section 3

   *  Stateful Nature: QUIC supports stateful communications between
      endpoints via connection IDs and long-lived streams within each
      connection.  Sections 2 and 5 of [RFC9000] describe these
      features, respectively.

   *  Frame Data Units: QUIC uses frames as one of its units of
      information when sending data over a stream.  Part packets-frames
      of [RFC9000] describes frames, and packets, in detail.

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   *  Congestion Avoidance: QUIC provides various mechanisms to help
      achieve congestion avoidance.  [RFC9002] describes these
      mechanisms in detail.

   *  Reliability: QUIC uses message acknowledgement, packet
      retransmission, and other features to ensure reliability.  Part
      packetization of [RFC9000] describes these features in detail.

   *  Pipelining: Pipelining is allowed in EoQ.  QUIC streams support
      sending multiple frames without waiting for responses from the
      other peer.  This does not change the basic single command, single
      response operating mode of the core EPP protocol.

7.  IANA Considerations

7.1.  Registration of an EoQ Identification String

   This document creates a new registration for the identification of
   EoQ in the "TLS Application-Layer Protocol Negotiation (ALPN)
   Protocol IDs" registry [RFC7301].

   *  Protocol: EoQ

   *  Identification Sequence: 0x65 0x6F 0x71 ("eoq")

   *  Reference: This document

7.2.  Registration of Port Number

   The "Service Name and Transport Protocol Port Number Registry"
   contains an entry for EPP UDP/700 based on [RFC6335].  However, no
   known implementations of EPP over UDP exist.  The entry will be
   reassigned to reference this draft.

   *  Service Name: epp

   *  Port Number: 700

   *  Transport Protocol(s): UDP

   *  Assignee: IESG

   *  Contact: IETF Chair

   *  Description: EPP run over QUIC

   *  Reference: This document

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8.  Security Considerations

   EPP over QUIC provides the similary securtiy with EPP over TCP with
   TLS.  Some related security issues have been discussed in [RFC5734]
   and [RFC9000].

   EoQ servers run the risk of a resource exhaustion attack by allowing
   the creation of unlimited QUIC streams per QUIC connection.  Servers
   SHOULD limit a client to a maximum number of QUIC streams per QUIC
   connection based on server capabilities and operational load.

9.  Acknowledgements

   The authors wish to thank the following persons for their feedback
   and suggestions: Scott Hollenbeck.

10.  Normative References

   [BCP14]    Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

              Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, May 2017.

              <https://www.rfc-editor.org/info/bcp14>

   [RFC5730]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)",
              STD 69, RFC 5730, DOI 10.17487/RFC5730, August 2009,
              <https://www.rfc-editor.org/info/rfc5730>.

   [RFC5734]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
              Transport over TCP", STD 69, RFC 5734,
              DOI 10.17487/RFC5734, August 2009,
              <https://www.rfc-editor.org/info/rfc5734>.

   [RFC6335]  Cotton, M., Eggert, L., Touch, J., Westerlund, M., and S.
              Cheshire, "Internet Assigned Numbers Authority (IANA)
              Procedures for the Management of the Service Name and
              Transport Protocol Port Number Registry", BCP 165,
              RFC 6335, DOI 10.17487/RFC6335, August 2011,
              <https://www.rfc-editor.org/info/rfc6335>.

   [RFC7301]  Friedl, S., Popov, A., Langley, A., and E. Stephan,
              "Transport Layer Security (TLS) Application-Layer Protocol
              Negotiation Extension", RFC 7301, DOI 10.17487/RFC7301,
              July 2014, <https://www.rfc-editor.org/info/rfc7301>.

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   [RFC9000]  Iyengar, J., Ed. and M. Thomson, Ed., "QUIC: A UDP-Based
              Multiplexed and Secure Transport", RFC 9000,
              DOI 10.17487/RFC9000, May 2021,
              <https://www.rfc-editor.org/info/rfc9000>.

   [RFC9001]  Thomson, M., Ed. and S. Turner, Ed., "Using TLS to Secure
              QUIC", RFC 9001, DOI 10.17487/RFC9001, May 2021,
              <https://www.rfc-editor.org/info/rfc9001>.

   [RFC9002]  Iyengar, J., Ed. and I. Swett, Ed., "QUIC Loss Detection
              and Congestion Control", RFC 9002, DOI 10.17487/RFC9002,
              May 2021, <https://www.rfc-editor.org/info/rfc9002>.

Appendix A.  Change History

A.1.  Change from 00 to 01

   1.  Added Dan Keathley and James Gould as co-authors and aligned the
       draft with EPP RFC 5734.

Authors' Addresses

   Jiankang Yao
   CNNIC
   4 South 4th Street,Zhongguancun,Haidian District
   Beijing
   Beijing, 100190
   China
   Phone: +86 10 5881 3007
   Email: yaojk@cnnic.cn

   Hongtao Li
   CNNIC
   4 South 4th Street,Zhongguancun,Haidian District
   Beijing
   Beijing, 100190
   China
   Email: lihongtao@cnnic.cn

   Man Zhang
   CNNIC
   4 South 4th Street,Zhongguancun,Haidian District
   Beijing
   Beijing, 100190
   China
   Email: zhangman@cnnic.cn

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   Daniel Keathley
   VeriSign, Inc.
   12061 Bluemont Way
   Reston, VA 20190
   United States of America
   Email: dkeathley@verisign.com
   URI:   http://www.verisigninc.com

   James Gould
   VeriSign, Inc.
   12061 Bluemont Way
   Reston, VA 20190
   United States of America
   Email: jgould@verisign.com
   URI:   http://www.verisigninc.com

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