varnishd 4.0 -- default.vcl vhost regex

vcl 4.0;

# I used 172.31.27.119 to avoid a 127.0.0.1:80 conflict
# between varnishd and the backend (nginx in my case).
# I defined only one backend since all my nginx vhosts
# are running on 172.31.27.119:8080.
# NOTE: eth0 is using a static IP configuration.
backend default {
    .host = "172.31.27.119";
    .port = "8080";
}

sub vcl_recv {
    # matches www.example.net AND example.net
    if (req.http.host == "(www.)example.net") {
        set req.backend_hint = default;
    }
    # matches www.example.org AND example.org
    if (req.http.host == "(www.)example.org") {
        set req.backend_hint = default;
    }
    # matches www.example.com AND example.com
    if (req.http.host == "(www.)example.com") {
        set req.backend_hint = default;
    }
    # matches www.example.org AND example.org OR
    # matches www.example.com AND example.com OR
    # matches www.example.net AND example.net
    if (req.http.host == "(www.)example.\borg|com|net\b") {
        set req.backend_hint = default;
    }
    # matches www.idlemind.net AND idlemind.net OR
    # matches www.idl3mind.net AND idl3mind.net
    if (req.http.host == "(www.)idl[e3]mind.net" ) {
        set req.backend_hint = default;
    }
    # matches www.helpwithdragon.com AND helpwithdragon.com OR
    # matches www.help-with-dragon.com AND help-with-dragon.com
    if (req.http.host == "(www.)help[\-]with[\-]dragon.com" ) {
        set req.backend_hint = default;
    }
    # matches www.badmojobrew.com AND badmojobrew.com OR
    # matches www.badmojobrewery.com AND badmojobrewery.com OR
    # matches www.badmojobrewing.com AND badmojobrewing.com OR
    # matches www.badmojobrewingco.com AND badmojobrewingco.com OR
    if (req.http.host == "(www.)badmojobrew\bery|ing|ingco\b.com" ) {
        set req.backend_hint = default;
    }
}