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HTTP Alternative Services
draft-ietf-httpbis-alt-svc-06

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft that was ultimately published as RFC 7838.
Authors Mark Nottingham , Patrick McManus , Julian Reschke
Last updated 2015-02-10 (Latest revision 2015-02-05)
Replaces draft-nottingham-httpbis-alt-svc
RFC stream Internet Engineering Task Force (IETF)
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Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd Mark Nottingham
IESG IESG state Became RFC 7838 (Proposed Standard)
Consensus boilerplate Unknown
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draft-ietf-httpbis-alt-svc-06
quot;Alt-Svc-Used" and reduced information to a flag
   to address fingerprinting concerns
   (<https://github.com/http2/http2-spec/issues/502>).

   Note that ALTSVC frame is preferred to Alt-Svc header field
   (<https://github.com/http2/http2-spec/pull/503>).

   Incorporate ALTSRV frame
   (<https://github.com/http2/http2-spec/pull/507>).

   Moved definition of status code 421 to HTTP/2.

   Partly resolved <https://github.com/httpwg/http-extensions/issues/5>.

A.4.  Since draft-ietf-httpbis-alt-svc-02

   Updated ALPN reference.

   Resolved <https://github.com/httpwg/http-extensions/issues/2>.

A.5.  Since draft-ietf-httpbis-alt-svc-03

   Renamed "Alt-Svc-Used" to "Alt-Used"
   (<https://github.com/httpwg/http-extensions/issues/17>).

   Clarify ALTSVC Origin information requirements
   (<https://github.com/httpwg/http-extensions/issues/19>).

   Remove/tune language with respect to tracking risks (see
   <https://github.com/httpwg/http-extensions/issues/34>).

A.6.  Since draft-ietf-httpbis-alt-svc-04

   Mention tracking by alt-svc host name in Security Considerations
   (<https://github.com/httpwg/http-extensions/issues/36>).

   "421 (Not Authoritative)" -> "421 (Misdirected Request)".

   Allow the frame to carry multiple indicator and use the same payload
   formats for both
   (<https://github.com/httpwg/http-extensions/issues/37>).

Nottingham, et al.       Expires August 9, 2015                [Page 17]
Internet-Draft          HTTP Alternative Services          February 2015

A.7.  Since draft-ietf-httpbis-alt-svc-05

   Go back to specifying the origin in Alt-Used, but make it a "SHOULD"
   (<https://github.com/httpwg/http-extensions/issues/34>).

   Restore Origin field in ALT-SVC frame
   (<https://github.com/httpwg/http-extensions/issues/38>).

Authors' Addresses

   Mark Nottingham
   Akamai

   EMail: mnot@mnot.net
   URI:   https://www.mnot.net/

   Patrick McManus
   Mozilla

   EMail: mcmanus@ducksong.com
   URI:   https://mozillians.org/u/pmcmanus/

   Julian F. Reschke
   greenbytes GmbH

   EMail: julian.reschke@greenbytes.de
   URI:   https://greenbytes.de/tech/webdav/

Nottingham, et al.       Expires August 9, 2015                [Page 18]