A new Request for Comments is now available in online RFC libraries.
RFC 9460
Title: Service Binding and Parameter Specification
via the DNS (SVCB and HTTPS
Resource Records)
Author: B. Schwartz,
M. Bishop,
E. Nygren
Status: Standards Track
Stream: IETF
Date: November 2023
Mailbox: [email protected],
[email protected],
[email protected]
Pages: 47
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-dnsop-svcb-https-12.txt
URL: https://www.rfc-editor.org/info/rfc9460
DOI: 10.17487/RFC9460
This document specifies the "SVCB" ("Service Binding") and "HTTPS"
DNS resource record (RR) types to facilitate the lookup of
information needed to make connections to network services, such as
for HTTP origins. SVCB records allow a service to be provided from
multiple alternative endpoints, each with associated parameters (such
as transport protocol configuration), and are extensible to support
future uses (such as keys for encrypting the TLS ClientHello). They
also enable aliasing of apex domains, which is not possible with
CNAME. The HTTPS RR is a variation of SVCB for use with HTTP (see RFC
9110, "HTTP Semantics"). By providing more information to the client
before it attempts to establish a connection, these records offer
potential benefits to both performance and privacy.
This document is a product of the Domain Name System Operations Working Group
of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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