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DNS Queries over HTTPS (DoH) (RFC8484)

IP.com Disclosure Number: IPCOM000255909D
Original Publication Date: 2018-Oct-01
Included in the Prior Art Database: 2018-Oct-20
Document File: 42 page(s) / 47K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Hoffman: AUTHOR [+1]

Abstract

This document defines a specific protocol, DNS over HTTPS (DoH), for sending DNS [RFC1035] queries and getting DNS responses over HTTP [RFC7540] using https [RFC2818] URIs (and therefore TLS [RFC8446] security for integrity and confidentiality). Each DNS query-response pair is mapped into an HTTP exchange.

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Internet Engineering Task Force (IETF)                        P. Hoffman Request for Comments: 8484                                         ICANN Category: Standards Track                                     P. McManus ISSN: 2070-1721                                                  Mozilla                                                             October 2018

                       DNS Queries over HTTPS (DoH)

Abstract

   This document defines a protocol for sending DNS queries and getting    DNS responses over HTTPS.  Each DNS query-response pair is mapped    into an HTTP exchange.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    https://www.rfc-editor.org/info/rfc8484.

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

 Hoffman & McManus            Standards Track                    [Page 1]
 RFC 8484              DNS Queries over HTTPS (DoH)          October 2018

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3

   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3

   3.  Selection of DoH Server . . . . . . . . . . . . . . . . . . .   4

   4.  The HTTP Exchange . . . . . . . . . . . . . . . . . . . . . .   4

     4.1.  The HTTP Request  . . . . . . . . . . . . . . . . . . . .   4

       4.1.1.  HTTP Request Examples . . . . . . . . . . . . . . . .   5

     4.2.  The HTTP Response . . . . . . . . . . . . . . . . . . . .   7

       4.2.1.  Handling DNS and HTTP Errors ...