DNS Session Signaling
draft-bellis-dnsop-session-signal-01

The information below is for an old version of the document
Document Type Active Internet-Draft (candidate for dnsop WG)
Last updated 2016-07-22 (latest revision 2016-07-21)
Replaced by rfc8490, draft-ietf-dnsop-session-signal
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Tim Wicinski
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Send notices to "Tim Wicinski" <tjw.ietf@gmail.com>
DNSOP Working Group                                            R. Bellis
Internet-Draft                                                       ISC
Intended status: Standards Track                             S. Cheshire
Expires: January 22, 2017                                     Apple Inc.
                                                            J. Dickinson
                                                            S. Dickinson
                                                                 Sinodun
                                                               A. Mankin
                                                              Salesforce
                                                             T. Pusateri
                                                            Unaffiliated
                                                           July 21, 2016

                         DNS Session Signaling
                  draft-bellis-dnsop-session-signal-01

Abstract

   The Extension Mechanisms for DNS (EDNS(0)) [RFC6891] is explicitly
   defined to only have "per-message" semantics.  This document defines
   a new Session Signaling OpCode used to carry persistent "per-session"
   type-length-values (TLVs), and defines an initial set of TLVs used to
   manage session timeouts and termination.

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
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   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 January 22, 2017.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bellis, et al.          Expires January 22, 2017                [Page 1]
Internet-Draft            DNS Session Signaling                July 2016

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Details  . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Message Format  . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Message Handling  . . . . . . . . . . . . . . . . . . . .   4
     3.3.  TLV Format  . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Mandatory TLVs  . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Session Management Support TLVs . . . . . . . . . . . . .   6
       4.1.1.  "Not Implemented" . . . . . . . . . . . . . . . . . .   6
     4.2.  Session Management TLVs . . . . . . . . . . . . . . . . .   6
       4.2.1.  Start Session . . . . . . . . . . . . . . . . . . . .   6
       4.2.2.  Terminate Session . . . . . . . . . . . . . . . . . .   6
       4.2.3.  Idle Timeout  . . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  DNS Session Signaling Opcode Registration . . . . . . . .   8
     5.2.  DNS Session Signaling Type Codes Registry . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The Extension Mechanisms for DNS (EDNS(0)) [RFC6891] is explicitly
   defined to only have "per-message" semantics.  This document defines
   a new Session Signaling OpCode used to carry persistent "per-session"
   type-length-values (TLVs), and defines an initial set of TLVs used to
   manage session timeouts and termination.

   A further issue with EDNS(0) is that there is no standard mechanism
   for a client to be able to tell whether a server has processed or
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