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RFC 9460: Service Binding and Parameter Specification via the DNS (SVCB and HTTPS Resource Records)

In plain English — editorial summary, not part of the RFC

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.

Document record

Document ID
RFC9460
Published
November 2023
Authors
B. Schwartz; M. Bishop; E. Nygren
Status
PROPOSED STANDARD
Stream
IETF
Area
ops
Pages
47
Also known as
—

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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canonical URL: /rfc/9460-service-binding-and-parameter-specification-via-the-dns-svcb-and-https-resource