Override host header

gistfile1.txt

varnishtest "host_header"

server s1 -repeat 2 {
       rxreq
       expect req.http.host == "overridden"
       txresp

       rxreq
       expect req.http.host == "overridden"
       txresp
} -start

varnish v1 -vcl {
        import std;
        import goto;
        import directors;

        backend default {
                .host = "${bad_ip}";
                .port = "8089";
        }

        sub vcl_init {
                new rr = directors.fallback();
                new gd1 = goto.dns_director("${s1_addr}", "${s1_port}", host_header="overridden");
                rr.add_backend(gd1.backend());


                if (std.healthy(gd1.backend())) { }
        }

        sub vcl_recv {
#               unset req.http.Host;
                set req.backend_hint = rr.backend();
#                return (pass);
        }

sub vcl_backend_fetch {
        unset bereq.http.Host;
#       set bereq.backend = rr.backend();
}

} -start

client c1 {
        txreq -hdr "Host: foo.com"
        rxresp
        expect resp.status == 200

        txreq -hdr "Host: bar.com"
        rxresp
        expect resp.status == 200
} -run