These are the headers your browser carries along (at this moment):
HTTP_ACCEPT_ENCODING: gzip
HTTP_CONNECTION: close
HTTP_HOST: krijnhoetmer.nl
HTTP_IF_MODIFIED_SINCE: Mon, 14 Oct 2019 20:34:19 CEST
HTTP_ACCEPT_LANGUAGE: en-US,en;q=0.5
HTTP_ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
HTTP_USER_AGENT: CCBot/2.0 (https://commoncrawl.org/faq/)
HTTPS: on
A huge problem for content negotiation is that Internet Explorer sends HTTP_ACCEPT: */*
. Bah :(
Thanks Mathias Bynens for your remarks ;)