phpseclib\Net\SSH1::_disconnect PHP Method

    function _disconnect($msg = 'Client Quit')
    {
        if ($this->bitmap) {
            $data = pack('C', NET_SSH1_CMSG_EOF);
            $this->_send_binary_packet($data);
            /*
            $response = $this->_get_binary_packet();
            if ($response === true) {
                $response = array(self::RESPONSE_TYPE => -1);
            }
            switch ($response[self::RESPONSE_TYPE]) {
                case NET_SSH1_SMSG_EXITSTATUS:
                    $data = pack('C', NET_SSH1_CMSG_EXIT_CONFIRMATION);
                    break;
                default:
                    $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
            }
            */
            $data = pack('CNa*', NET_SSH1_MSG_DISCONNECT, strlen($msg), $msg);
            $this->_send_binary_packet($data);
            fclose($this->fsock);
            $this->bitmap = 0;
        }
    }