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Finding HTTP Alternative Services via the Domain Name Service

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Benjamin M. Schwartz , Mike Bishop
Last updated 2018-11-05 (Latest revision 2018-04-23)
Replaced by draft-nygren-dnsop-svcb-httpssvc
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The HTTP Alternative Services (Alt-Svc) mechanism allows an HTTP origin to be served from multiple network endpoints, and over multiple protocols. However, the client must first contact the origin server, in order to learn of the alternative services. This draft proposes a straightforward mapping of Alt-Svc into DNS, allowing clients to learn of these services before their first contact with the origin. This arrangement offers potential benefits to both performance and privacy.


Benjamin M. Schwartz
Mike Bishop

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)