CAS_Client::getServerProxyURL PHP Method

    public function getServerProxyURL()
    {
        // the URL is build only when needed
        if (empty($this->_server['proxy_url'])) {
            switch ($this->getServerVersion()) {
                case CAS_VERSION_1_0:
                    $this->_server['proxy_url'] = '';
                    break;
                case CAS_VERSION_2_0:
                case CAS_VERSION_3_0:
                    $this->_server['proxy_url'] = $this->_getServerBaseURL() . 'proxy';
                    break;
            }
        }
        return $this->_server['proxy_url'];
    }