VMOD_ACCEPT(3) Library Functions Manual VMOD_ACCEPT(3)

vmod_accept - Accept VMOD

import accept [as name] [from "path"]
new xrule = accept.rule(STRING string)
    VOID xrule.add(STRING string)
    VOID xrule.remove(STRING string)
    STRING xrule.filter(STRING string)


accept allows you to sanitize the Accept* headers (mainly Accept, Accept-Charset and Accept-Encoding) by specify one fallback string, and then adding valid values:

sub vcl_init {
    new rule = accept.rule("text/plain");
    rule.add("text/html");
    rule.add("application/json");
}


You can then use the rule object to filter the headers. The following line will set the accept header to "text/html" or "application/json" if any of them is found in the original header, and will set it to "text/plain" if neither is found:

sub vcl_recv {
    set req.http.Accept = rule.filter(req.http.Accept);
}


accept will ignore any parameter found and will just return the first choice found. More info here: <https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html>

Create a rule object, setting the fallback string.

Add string to the list of valid choices.

Remove string to the list of valid choices.

Parse string and try to find a valid choice. The first one found is returned (they are tested in the same order they were added), otherwise, the fallback string is returned.

Copyright (c) 2016 Guillaume Quintard
Author: Guillaume Quintard <guillaume.quintard@gmail.com>
(vmodtool requires this format.)