vmod_accept - Man Page

Accept VMOD

Synopsis

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)

Description

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

API

new xrule = accept.rule(STRING string)

Create a rule object, setting the fallback string.

VOID xrule.add(STRING string)

Add string to the list of valid choices.

VOID xrule.remove(STRING string)

Remove string to the list of valid choices.

STRING xrule.filter(STRING string)

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.