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Alt-Svc header with 421 status #75

MikeBishop opened this issue May 28, 2015 · 1 comment


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commented May 28, 2015

Why does the spec explicitly allow the alternate to simultaneously send you an alternate list (which we trust, because the alternate is authoritative for this origin) and a status code telling us this host is not authoritative for this origin?

It seems like 421 should automatically remove the alternate (as stated) and cause the user agent to fall back to the origin server. While one can also envision a scenario where the server says "I'm not authoritative, but I know who might be....", that way lies loops.

@reschke reschke added the alt-svc label May 30, 2015

@mnot mnot added the design label Jun 8, 2015


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commented Jul 21, 2015

Discussed in Prague; an alt-svc header in a 421 response MUST be ignored.

@mnot mnot added the editor-ready label Aug 24, 2015

reschke added a commit that referenced this issue Sep 1, 2015

@reschke reschke closed this Sep 1, 2015

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