Reported in forum
Proposal from Anthon:
We just need to exclude visits with the X-Moz: prefetch (Mozilla), X-Purpose: preview (Safari, Opera), and X-Purpose: instant (Chrome) ```
$_SERVER["HTTP_X_PURPOSE"] == "preview" || $_SERVER['HTTP_X_MOZ'] == "prefetech")
I would have added a UA check as an additional guard against header spoofing.
Also, what about "X-Purpose: instant"?
p.s. is the commit hook not working?
Did you see any doc on X-purpose: instant?
Header spoofing: that's fine with me if users spoof this header to exclude themselves from tracking? :)
(In ) Refs #3285
For Chrome, it was "preview" at one point, and then later changed to "instant". Oh, and at one point, it seems there was also a bug (now fixed) where Chrome sent: "X-Purpose: : instant" (extra colon and space).