private void ProcessSendQueue()
{
Log(LogLevel.Info, "Send queue started");
IPEndPoint remoteIPEndPoint = null;
IPAddress ipAddress = IPAddress.Parse(_multicastIPAddress);
if (ipAddress != null)
{
remoteIPEndPoint = new IPEndPoint(ipAddress, _multicastPort);
}
while (_isStarted)
{
CommunicationMessage message = null;
lock (_sendQueue.SyncRoot)
{
if (_isStarted && _sendQueue.Count > 0)
{
message = _sendQueue.Dequeue() as CommunicationMessage;
}
}
if (message != null)
{
Log(LogLevel.Info, "Begin sending data. Length: " + message.Data.Length.ToString().PadLeft(5));
char[] dataToSend = message.Data.ToCharArray();
Encoding encoding = Encoding.UTF8;
byte[] buffer = encoding.GetBytes(dataToSend, 0, dataToSend.Length);
if (_logLevel >= LogLevel.Full)
{
StringBuilder sb = new StringBuilder();
sb.Append("Data to send. Length: " + dataToSend.Length.ToString().PadLeft(5) + " (" + buffer.Length.ToString().PadLeft(5) + " bytes)");
sb.Append(Environment.NewLine);
sb.Append("[begin]");
sb.Append(Environment.NewLine);
sb.Append(message.Data);
sb.Append(Environment.NewLine);
sb.Append("[end]");
Log(LogLevel.Full, sb.ToString());
}
else
{
Log(LogLevel.Info, "Data to send. Length: " + dataToSend.Length.ToString().PadLeft(5) + " (" + buffer.Length.ToString().PadLeft(5) + " bytes)");
}
if (message.ToAll || message.IsMulticast)
{
if (remoteIPEndPoint != null)
{
Log(LogLevel.Info, "Sending data via multicast");
_multicastSocket.SendTo(buffer, remoteIPEndPoint);
Log(LogLevel.Info, "End sending data Length: " + dataToSend.Length.ToString().PadLeft(5) + " (" + buffer.Length.ToString().PadLeft(5) + " bytes) via Multicast");
}
}
int i = 0;
int nrOfRecipients = 0; // Just displayed in the logfile
while (i < _socketList.Count)
{
Socket socket = _socketList[i];
IPEndPoint ipEndPoint = socket.RemoteEndPoint as IPEndPoint;
if (ipEndPoint != null)
{
try
{
socket.Send(buffer);
nrOfRecipients++;
}
catch (SocketException)
{
CloseSocket(ref socket);
_socketList.RemoveAt(i);
i--;
if (ClientDisconnected != null)
{
ClientDisconnected.BeginInvoke(this, new ClientConnectionEventArgs(ipEndPoint), null, null);
}
}
i++;
}
}
Log(LogLevel.Info, "End sending data. Length: " + dataToSend.Length.ToString().PadLeft(5) + " (" + buffer.Length.ToString().PadLeft(5) + " bytes) to " + nrOfRecipients.ToString().PadLeft(2) + "/" + _socketList.Count + " recipients");
}
Thread.Sleep(10);
}
Log(LogLevel.Info, "Send queue stopped");
}
private void StartListening(object stateInfo)
{
string savedData = string.Empty;
Socket socket = (Socket)stateInfo;
IPEndPoint remoteEndPoint = (IPEndPoint)socket.RemoteEndPoint;
Log(LogLevel.Info, "Start listening on " + remoteEndPoint);
byte[] buffer = new byte[_bufferSize];
while (_isStarted && socket != null && socket.Connected)
{
try
{
int received = socket.Receive(buffer);
if (received == 0)
{
// Client disconnected
if (_isStarted)
{
_socketList.Remove(socket);
Log(LogLevel.Info, "The client closed the connection");
}
CloseSocket(ref socket);
}
else
{
IPEndPoint ipEndPoint = socket.RemoteEndPoint as IPEndPoint;
Encoding encoding = Encoding.UTF8;
string data = encoding.GetString(buffer, 0, received);
if (_logLevel >= LogLevel.Full)
{
StringBuilder sb = new StringBuilder();
sb.Append("Data received Length: " + data.Length.ToString().PadLeft(5) + " (" + received.ToString().PadLeft(5) + " bytes) from: " + ipEndPoint.Address);
sb.Append(Environment.NewLine);
sb.Append("[begin]");
sb.Append(Environment.NewLine);
sb.Append(data);
sb.Append(Environment.NewLine);
sb.Append("[end]");
Log(LogLevel.Full, sb.ToString());
}
else
{
Log(LogLevel.Info, "Data received Length: " + data.Length.ToString().PadLeft(5) + " (" + received.ToString().PadLeft(5) + " bytes) from: " + ipEndPoint.Address);
}
savedData += data;
const string messageEnd = "</Message>";
// do we have a complete message?
int indexOfEOM = savedData.IndexOf(messageEnd);
while (indexOfEOM != -1)
{
int messageLength = indexOfEOM + messageEnd.Length;
lock (_receiveQueue.SyncRoot)
{
string completeMessage = savedData.Substring(0, messageLength);
_receiveQueue.Enqueue(new CommunicationMessage(completeMessage, false));
}
if (savedData.Length > messageLength) // received (the start of) another message
{
savedData = savedData.Substring(messageLength);
indexOfEOM = savedData.IndexOf(messageEnd);
}
else
{
savedData = string.Empty;
break;
}
}
}
}
catch (SocketException socketException)
{
LogException(socketException);
}
catch (Exception exception)
{
LogException(exception);
}
Thread.Sleep(10);
}
if (ClientDisconnected != null)
{
ClientDisconnected.BeginInvoke(this, new ClientConnectionEventArgs(remoteEndPoint), null, null);
}
Log(LogLevel.Info, "Stopped listening on " + remoteEndPoint);
}