Re: Redirection to Other IP Addresses

Daniel Stenberg <daniel@haxx.se> Thu, 01 August 2019 07:59 UTC

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Date: Thu, 1 Aug 2019 09:56:28 +0200 (CEST)
From: Daniel Stenberg <daniel@haxx.se>
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To: Jack Firth <jackhfirth@gmail.com>
cc: Bin Ni <nibin@quantil.com>, Chris Lemmons <alficles@gmail.com>, Amos Jeffries <squid3@treenet.co.nz>, HTTP Working Group <ietf-http-wg@w3.org>
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Subject: Re: Redirection to Other IP Addresses
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On Thu, 1 Aug 2019, Jack Firth wrote:

> Yes you could make a status code, but I don't follow why you need a new
> status code instead of reusing a generic 300 response with body explaining
> they need to follow Alt-Svc. A special status code requires clients to
> implement new behavior, and if they're doing that already can't they just
> implement Alt-Svc support instead?

No, because Bin wants to (as I understand it) force the next request that uses 
that origin to *forcibly* use the new alternative IP address. I'm pretty sure 
most alt-svc implementations will not do that but will rather reuse existing 
connections (since the spec allows that and it is much faster) and then switch 
to the alternative only once a connection to that has been setup...

-- 

  / daniel.haxx.se