Exact match header not being set in plugin

Hi,

I’ve been trying to get exact matches working as I need to actually invalidate caches where query params are mandatory.

The plugin contains example VCL files, where X-VC-Purge-Method is checked. This header is never set in PHP code though. It always resorts to default or regex, instead of exact:

    public function purge_url($url)
    {
        $p = parse_url($url);

        if (isset($p['query']) && ($p['query'] == 'vc-regex')) {
            $pregex = '.*';
            $purgemethod = 'regex';
        } else {
            $pregex = '';
            $purgemethod = 'default';
        }

        if (isset($p['path'])) {
            $path = $p['path'];
        } else {
            $path = '';
        }

        $schema = apply_filters('vcaching_schema', $this->useSsl ? 'https://' : 'https://');

        foreach ($this->ipsToHosts as $key => $ipToHost) {
            $purgeme = $schema . $ipToHost['ip'] . $path . $pregex;
        }
    }

What I would expect is this:

        if (isset($p['query']) && ($p['query'] == 'vc-regex')) {
            $pregex = '.*';
            $purgemethod = 'regex';
        } else if (isset($p['query'])) {
            $pregex = '?' . $p['query'];
            $purgemethod = 'exact';
        } else {
            $pregex = '';
            $purgemethod = 'default';
        }