- From: Julian Reschke <julian.reschke@gmx.de>
- Date: Sat, 09 May 2015 17:59:45 +0200
- To: Bence Béky <bnc@chromium.org>, HTTP <ietf-http-wg@w3.org>
On 2015-05-08 15:37, Bence Béky wrote: > Hello httpbis, > > This is a heads up about a parameter that we have been using in > Alternate-Protocol headers, and are planning to use in Alt-Svc headers > and ALTSVC frames. It is "p=" (probability), that Google servers emit > and Chrome observes. This takes a numerical value between 0.0 and 1.0 > inclusive, and tells the client to only observe the alternative > service with that given probability (and ignore it otherwise). This > parameter can be used for finer grade load balancing, for gradual > rollout of a new protocol, and for performance testing. > > My understanding is that the current HTTP Alternative Services draft > at https://tools.ietf.org/id/draft-ietf-httpbis-alt-svc-06.html#rfc.section.3 > permits parameters other than "ma=", therefore using a customary > parameter is conformant to the specification. > ... The syntax allow is, but we haven't described how new ones can be defined. -> opened <https://github.com/httpwg/http-extensions/issues/69> Best regards, Julian
Received on Saturday, 9 May 2015 16:00:14 UTC