private void Broadcast()
{
Socket sendUdpSocket = null;
Socket receiveUdpSocket = null;
try
{
var noticeForSend = new ScannerBroadcastNotice(_scanner.SerialNumber, _scanner.Status);
sendUdpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified);
sendUdpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
var sendEndPoint = new IPEndPoint(_broadcastIpAddress, UDP_BROADCAST_PORT);
receiveUdpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified)
{
Blocking = false // режим неблокированной работы
};
EndPoint receiveEndPoint = new IPEndPoint(IPAddress.Any, UDP_BROADCAST_PORT);
receiveUdpSocket.Bind(receiveEndPoint);
try
{
sendUdpSocket.SendTo(noticeForSend.Data, sendEndPoint);
_logger.LogVerbose(Message.ScannerBrodcastMessageSended);
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
_logger.LogInfo(Message.ScannerManagerSendingFirstMessageError, ex.Message);
else
_logger.LogError(Message.ScannerManagerSendingFirstMessageError, ex);
}
while (true)
{
try
{
while (receiveUdpSocket.Poll(READ_TIMEOUT, SelectMode.SelectRead))
{
var data = new byte[ScannerBroadcastNotice.DATA_LENGTH];
receiveUdpSocket.ReceiveFrom(data, ref receiveEndPoint);
if (_connectorEventsHandler == null)
break;
var remoteAdress = ((IPEndPoint) receiveEndPoint).Address.ToString();
if (string.CompareOrdinal(_scanner.IPAddress, remoteAdress) == 0)
continue;
var receivedData = new ScannerBroadcastNotice(data);
_connectorEventsHandler.Connected(
receivedData.SerialNumber,
remoteAdress);
}
}
catch (ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
_logger.LogInfo(Message.ScannerManagerPollMessageError, ex.Message);
else
_logger.LogError(Message.ScannerManagerPollMessageError, ex);
}
if (_stopBroadcastEvent.WaitOne(SEND_TIMEOUT))
return;
try
{
sendUdpSocket.SendTo(noticeForSend.Data, sendEndPoint);
_logger.LogVerbose(Message.ScannerBrodcastMessageSended);
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
_logger.LogInfo(Message.ScannerManagerSendingMessageError, ex.Message);
else
_logger.LogError(Message.ScannerManagerSendingMessageError, ex, ex.Message);
}
}
}
catch (ThreadAbortException)
{
_logger.LogVerbose(Message.ScannerBrodcastMessagingStopped);
}
catch (Exception ex)
{
_logger.LogError(Message.ScannerManagerBroadcastError, ex);
}
finally
{
if (receiveUdpSocket != null)
receiveUdpSocket.Close();
if (sendUdpSocket != null)
sendUdpSocket.Close();
}
}
private void Broadcast()
{
Socket sendUdpSocket = null;
Socket receiveUdpSocket = null;
try
{
var noticeForSend = new ScannerBroadcastNotice(_scanner.SerialNumber, _scanner.Status);
sendUdpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified);
sendUdpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
var sendEndPoint = new IPEndPoint(_broadcastIpAddress, UDP_BROADCAST_PORT);
receiveUdpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Unspecified)
{
Blocking = false // режим неблокированной работы
};
EndPoint receiveEndPoint = new IPEndPoint(IPAddress.Any, UDP_BROADCAST_PORT);
receiveUdpSocket.Bind(receiveEndPoint);
try
{
sendUdpSocket.SendTo(noticeForSend.Data, sendEndPoint);
_logger.LogVerbose(Message.ScannerBrodcastMessageSended);
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
{
_logger.LogInfo(Message.ScannerManagerSendingFirstMessageError, ex.Message);
}
else
{
_logger.LogError(Message.ScannerManagerSendingFirstMessageError, ex);
}
}
while (true)
{
try
{
while (receiveUdpSocket.Poll(READ_TIMEOUT, SelectMode.SelectRead))
{
var data = new byte[ScannerBroadcastNotice.DATA_LENGTH];
receiveUdpSocket.ReceiveFrom(data, ref receiveEndPoint);
if (_connectorEventsHandler == null)
{
break;
}
var remoteAdress = ((IPEndPoint)receiveEndPoint).Address.ToString();
if (string.CompareOrdinal(_scanner.IPAddress, remoteAdress) == 0)
{
continue;
}
var receivedData = new ScannerBroadcastNotice(data);
_connectorEventsHandler.Connected(
receivedData.SerialNumber,
remoteAdress);
}
}
catch (ThreadAbortException)
{
throw;
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
{
_logger.LogInfo(Message.ScannerManagerPollMessageError, ex.Message);
}
else
{
_logger.LogError(Message.ScannerManagerPollMessageError, ex);
}
}
if (_stopBroadcastEvent.WaitOne(SEND_TIMEOUT))
{
return;
}
try
{
sendUdpSocket.SendTo(noticeForSend.Data, sendEndPoint);
_logger.LogVerbose(Message.ScannerBrodcastMessageSended);
}
catch (Exception ex)
{
if (ex is RemotingException || ex is SocketException)
{
_logger.LogInfo(Message.ScannerManagerSendingMessageError, ex.Message);
}
else
{
_logger.LogError(Message.ScannerManagerSendingMessageError, ex, ex.Message);
}
}
}
}
catch (ThreadAbortException)
{
_logger.LogVerbose(Message.ScannerBrodcastMessagingStopped);
}
catch (Exception ex)
{
_logger.LogError(Message.ScannerManagerBroadcastError, ex);
}
finally
{
if (receiveUdpSocket != null)
{
receiveUdpSocket.Close();
}
if (sendUdpSocket != null)
{
sendUdpSocket.Close();
}
}
}
