/// <summary>
/// Send the data to all the subscribers.
/// </summary>
/// <param name="datagram">Data to send.</param>
private void PublishRawUdpData(AdcpUdp.Datagram datagram)
{
// If there are subscribers, send the data
if (ReceiveRawUdpDataEvent != null)
{
ReceiveRawUdpDataEvent(datagram.RawMessage);
}
}
/// <summary>
/// Read data from the UDP port.
/// </summary>
/// <param name="res">Async response from read.</param>
private void recv(IAsyncResult res)
{
try
{
if (res != null)
{
byte[] received = _udpClient.EndReceive(res, ref _endPoint);
if (received != null && _endPoint != null)
{
// Convert received message to a string
string message = "";
if (received[0] == 0xFF)
{
message = _endPoint.Address.ToString() + ":" + _endPoint.Port.ToString() + "\r\n";
for (int i = 1; i < received.Length; i++)
{
message += received[i].ToString("X2");
}
message += "\r\n";
}
else
{
message = System.Text.ASCIIEncoding.ASCII.GetString(received, 0, received.Length);
}
// Pass the data to all subscribers
AdcpUdp.Datagram datagram = new AdcpUdp.Datagram()
{
RawMessage = received,
Message = message,
Sender = _endPoint
};
// Publish the data
PublishRawUdpData(datagram);
// Set the Receive Buffer
ReceiveBufferString += message;
// Keep the Buffer to a set limit
if (ReceiveBufferString.Length > 5000)
{
ReceiveBufferString = ReceiveBufferString.Substring(ReceiveBufferString.Length - 5000);
}
// Check for the next message
_udpClient.BeginReceive(new AsyncCallback(recv), null);
}
}
}
catch (Exception e)
{
log.Error("Error reading data from UDP Port.", e);
}
}
