.. Copyright (c) 2021 Varnish Software AS SPDX-License-Identifier: BSD-2-Clause See LICENSE file for full text of license

Using extra digits in resp.status

In Varnish the .status variables can hold more than three digits, which is useful to send information to vcl_synth{} about which error message to produce::

sub vcl_recv {
   if ([...]) {
       return(synth(12404));
   }
}

sub vcl_synth {
    if (resp.status == 12404) {
        [...]       // this specific 404
    } else if (resp.status % 1000 == 404) {
        [...]       // all other 404's
    }
}