Workerman\Worker::acceptUdpConnection PHP Method

    public function acceptUdpConnection($socket)
    {
        $recv_buffer = stream_socket_recvfrom($socket, self::MAX_UDP_PACKAGE_SIZE, 0, $remote_address);
        if (false === $recv_buffer || empty($remote_address)) {
            return false;
        }
        // UdpConnection.
        $connection = new UdpConnection($socket, $remote_address);
        $connection->protocol = $this->protocol;
        if ($this->onMessage) {
            if ($this->protocol) {
                $parser = $this->protocol;
                $recv_buffer = $parser::decode($recv_buffer, $connection);
                // Discard bad packets.
                if ($recv_buffer === false) {
                    return true;
                }
            }
            ConnectionInterface::$statistics['total_request']++;
            try {
                call_user_func($this->onMessage, $connection, $recv_buffer);
            } catch (\Exception $e) {
                self::log($e);
                exit(250);
            } catch (\Error $e) {
                self::log($e);
                exit(250);
            }
        }
        return true;
    }