DNS Queries over HTTPS
draft-ietf-doh-dns-over-https-04

The information below is for an old version of the document
Document Type Active Internet-Draft (doh WG)
Last updated 2018-03-21
Replaces draft-hoffman-dispatch-dns-over-https, draft-hoffman-dns-over-https
Stream IETF
Intended RFC status (None)
Formats plain text pdf html bibtex
Additional URLs
- Mailing list discussion
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                         P. Hoffman
Internet-Draft                                                     ICANN
Intended status: Standards Track                              P. McManus
Expires: September 22, 2018                                      Mozilla
                                                          March 21, 2018

                         DNS Queries over HTTPS
                    draft-ietf-doh-dns-over-https-04

Abstract

   This document describes how to run DNS service over HTTP using
   https:// URIs.

   [[ There is a repository for this draft at https://github.com/dohwg/
   draft-ietf-doh-dns-over-https [1] ]].

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 https://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 September 22, 2018.

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
   (https://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

Hoffman & McManus      Expires September 22, 2018               [Page 1]
Internet-Draft           DNS Queries over HTTPS               March 2018

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Requirements . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Non-requirements  . . . . . . . . . . . . . . . . . . . .   4
   4.  The HTTP Request  . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  DNS Wire Format . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  The HTTP Response . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  HTTP Integration  . . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  Cache Interaction . . . . . . . . . . . . . . . . . . . .   8
     6.2.  HTTP/2  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.3.  Server Push . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     7.1.  Registration of application/dns-udpwireformat Media Type   10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   9.  Operational Considerations  . . . . . . . . . . . . . . . . .  13
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     11.2.  Informative References . . . . . . . . . . . . . . . . .  15
     11.3.  URIs . . . . . . . . . . . . . . . . . . . . . . . . . .  16
   Appendix A.  Previous Work on DNS over HTTP or in Other Formats .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   The Internet does not always provide end to end reachability for
   native DNS.  On-path network devices may spoof DNS responses, block
   DNS requests, or just redirect DNS queries to different DNS servers
   that give less-than-honest answers.  These are also sometimes
   delivered with poor performance or reduced feature sets.

   Over time, there have been many proposals for using HTTP and HTTPS as
   a substrate for DNS queries and responses.  To date, none of those
   proposals have made it beyond early discussion, partially due to
   disagreement about what the appropriate formatting should be and
   partially because they did not follow HTTP best practices.

   This document defines a specific protocol for sending DNS [RFC1035]
   queries and getting DNS responses over HTTP [RFC7540] using https://
   (and therefore TLS [RFC5246] security for integrity and

Hoffman & McManus      Expires September 22, 2018               [Page 2]
Show full document text