/// <summary>
/// Manages the data received async callback
/// </summary>
/// <param name="result">Result of async operation</param>
protected override void dataReceived(IAsyncResult result)
{
int ix;
AsyncStateObject aso = (AsyncStateObject)result.AsyncState;
Socket socket = aso.Socket;
EndPoint ep = null;
ix = clients.IndexOf(socket);
if (ix < 0)
{
return;
}
try
{
ep = socket.RemoteEndPoint;
if (socket.Connected)
{
base.dataReceived(result);
}
else
//if (!socket.Connected || !socket.Poll(1, SelectMode.SelectRead) || !socket.Poll(1, SelectMode.SelectWrite))
{
clients.RemoveAt(ix);
if (ClientDisconnected != null)
{
ClientDisconnected(ep);
}
}
}
catch
{
if (clients.Count > ix)
{
clients.RemoveAt(ix);
}
if (ClientDisconnected != null)
{
ClientDisconnected(ep);
}
}
}
/// <summary>
/// Manages the data received async callback
/// </summary>
/// <param name="result">Result of async operation</param>
protected virtual void dataReceived(IAsyncResult result)
{
int received;
byte[] cnnBuff = new byte[1];
AsyncStateObject aso = (AsyncStateObject)result.AsyncState;
Socket socket = aso.Socket;
try
{
received = socket.EndReceive(result);
}
//catch (SocketException ex)
catch (SocketException)
{
//if (ex.ErrorCode == 10054)
// throw ex;
BeginReceive(aso);
return;
}
if (socket.Connected)
{
if ((received == 0) && (aso.Length == 0))
{
throw new Exception("Disconnected");
}
aso.Flush(received);
// There is no pending data
if ((received < aso.BufferSize) || (socket.Available < 1))
{
ParseReceivedData(socket, aso.DataReceived);
aso = new AsyncStateObject(socket, bufferSize);
}
BeginReceive(aso);
//if (socket.Receive(cnnBuff, SocketFlags.Peek) == 0)
// throw new Exception("Disconnected");
}
}
/// <summary>
/// Begins a (safe) receive operation with a socket.
/// If the operation fails, it retries automatically while the socket is connected
/// </summary>
internal virtual bool BeginReceive(AsyncStateObject aso)
{
if ((aso == null) || (aso.Socket == null))
{
return(false);
}
//while (aso.Socket.Connected)
if (aso.Socket.Connected)
{
try
{
aso.Socket.BeginReceive(aso.Buffer, 0, bufferSize, SocketFlags.None, dlgDataReceived, aso);
return(true);
}
catch
{
System.Threading.Thread.Sleep(0);
//continue;
}
}
return(false);
}
private void SocketAccepted(IAsyncResult result)
{
Socket s;
AsyncStateObject aso;
try
{
s = listener.EndAcceptSocket(result);
}
catch { return; }
if (s.Connected)
{
clients.Add(s);
aso = new AsyncStateObject(s, bufferSize);
BeginReceive(aso);
if (ClientConnected != null)
{
ClientConnected(s);
}
}
listener.BeginAcceptSocket(dlgSocketAccepted, listener);
}
