/// <summary>
/// Starts read/write communication on the underlaying, connected socket.
/// Start must be called after a TcpStreamService has fired the onClientAccepted callback.
/// </summary>
/// <param name="onDataReceived">The action is called back (on a threadpool thread), when a message start is received.</param>
/// <param name="onChannelDisconnected">The action is called back (on a threadpool thread), when the channel is disconnected from remote. May be null.</param>
/// <param name="bufferSize">Defines size of the receive buffer and minimum size of the send buffer. Default = 1500 bytes (one ethernet frame).</param>
public void Start(Action<TcpStreamChannel> onDataReceived, Action<TcpStreamChannel> onChannelDisconnected = null, int bufferSize=1500)
{
if (onDataReceived == null)
{
throw new ArgumentNullException("onDataReceived");
}
if (_disposed || !ClientSocket.Connected)
{
DisposeSocket(ClientSocket);
throw new SocketException((int)SocketError.NotConnected);
}
if (_onDataReceivedAction != null)
{
throw new InvalidOperationException("already started");
}
_onDataReceivedAction = onDataReceived;
_onChannelDisconnectedAction = onChannelDisconnected;
_bufferSize = bufferSize;
_receiveEventArgs.SetBuffer(new byte[_bufferSize], 0, _bufferSize);
_receiveEventArgs.Completed += OnDataReceived;
_tcpStreamIncoming = new TcpStreamIncoming(StartAsyncRead, ()=> ClientSocket.Available);
_userReadsMessage = false;
_sendEventArgs = new SocketAsyncEventArgs();
_sendEventArgs.Completed += OnDataSent;
_tcpStreamOutgoing = new TcpStreamOutgoing(SendAsync, _bufferSize);
if (!StartAsyncRead() && LatestException != null)
{
throw LatestException;
}
}
protected virtual void Dispose(bool disposing)
{
_userReadsMessage = false;
if (disposing && !_disposed)
{
_disposed = true;
if (ClientSocket != null)
{
if (ClientSocket.Connected)
{
try
{
ClientSocket.Shutdown(SocketShutdown.Both);
}
catch (Exception shutdownException)
{
LatestException = shutdownException;
}
}
try
{
DisposeSocket(ClientSocket);
}
catch (Exception closeException)
{
LatestException = closeException;
}
ClientSocket = null;
}
if (_receiveEventArgs != null)
{
_receiveEventArgs.Dispose();
}
if (_sendEventArgs != null)
{
_sendEventArgs.Dispose();
}
if (_tcpStreamIncoming != null)
{
_tcpStreamIncoming.Dispose();
_tcpStreamIncoming = null;
}
if (_tcpStreamOutgoing != null)
{
_tcpStreamOutgoing.Dispose();
_tcpStreamOutgoing = null;
}
}
}
