Subject: Alt-Svc #71: Hints for Flushing

From: Mark Nottingham <[email-masked]>
Date: Mon, 1 Jun 2015 11:06:52 +1000

<https://github.com/httpwg/http-extensions/issues/71>

Mike suggests that a hint in Alt-Svc as to whether it should be flushed on a network change could be helpful. 

Extrapolating, I think this could be a boolean flag, e.g.,

  Alt-Svc: h2=":443"; ma=3600; persist

(if we change the parameter ABNF to make arguments optional)

Thoughts?

This is an interesting discussion to have in concert with #69 regarding extensibility; if we make services containing unrecognised extensions must-ignore, it would make this sort of thing much chattier; the above as an after-the-fact extension would need to be this on the wire:

  Alt-Svc: h2=":443"; ma=3600, h2=":443"; ma=3600; persist

Cheers,

--
Mark Nottingham   https://www.mnot.net/