Cli\Agent::send PHP Method

    function send($op, $data = '')
    {
        $mask = WS::Finale | $op & WS::OpCode;
        $len = strlen($data);
        $str = '';
        if ($len > 0xffff) {
            $str = pack('CCNN', $mask, 0x7f, $len);
        } else {
            if ($len > 0x7d) {
                $str = pack('CCn', $mask, 0x7e, $len);
            } else {
                $str = pack('CC', $mask, $len);
            }
        }
        $str .= $data;
        $server = $this->server();
        if (is_bool($server->write($this->socket, $str))) {
            $this->free();
            return FALSE;
        }
        if (!in_array($op, [WS::Pong, WS::Close]) && isset($this->events['send']) && is_callable($func = $this->events['send'])) {
            $func($this, $op, $data);
        }
        return $data;
    }