BACnet.IP.UDPAsyncServer.Send C# (CSharp) Метод

        public void Send(IPEndPoint ep, byte[] buffer, int length)
        {
            lock(_lock)
            {
                _socket.BeginSendTo(buffer, 0, length, SocketFlags.None, ep, _sendCallback, null);
            }
        }

        /// <summary>
        /// Sends a bvlc message
        /// </summary>
        /// <param name="mac">The BACnet mac address of the destination device</param>
        /// <param name="message"></param>
        private void _sendMessage(Mac mac, IBvlcMessage message)
        {
            // TODO: constant for buffer size, or
            // lease buffers from the UDPAsyncServer instance
            IPEndPoint ep = IPUtils.MacToIPEndPoint(mac);

            byte[]     buffer = new byte[1500];
            int        offset = 0;
            BvlcHeader header = null;


            header          = new BvlcHeader();
            header.Function = message.Function;
            header.Length   = 0;
            offset          = header.Serialize(buffer, offset);
            offset          = message.Serialize(buffer, offset);

            // patch the length in now that it is known
            buffer[2] = (byte)(offset << 8);
            buffer[3] = (byte)(offset);

            _server.Send(ep, buffer, offset);
        }