/// <summary>
/// Called when the client has received data or the connection has been closed.
/// </summary>
/// <param name="ar">the async operation result object from the receive operation</param>
private static void OnReceiveHandler(IAsyncResult ar)
{
if (ar == null)
{
return;
}
BaseClient baseClient = null;
try
{
baseClient = (BaseClient)ar.AsyncState;
int numBytes = baseClient.Socket.EndReceive(ar);
if (numBytes > 0)
{
baseClient.HasReceivedBytes = true;
baseClient.OnReceive(numBytes);
baseClient.BeginReceive();
}
else
{
// Only show a message if this client has received bytes in the past
// This helps avoid console spam for portal and other 0 byte pings - tolakram
if (baseClient.HasReceivedBytes)
{
if (Log.IsDebugEnabled)
{
Log.Debug("Disconnecting client (" + baseClient.TcpEndpointAddress + "), received bytes=" + numBytes);
}
}
baseClient._srvr.Disconnect(baseClient);
}
}
catch (ObjectDisposedException)
{
if (baseClient != null)
{
baseClient._srvr.Disconnect(baseClient);
}
}
catch (SocketException e)
{
if (baseClient != null)
{
if (Log.IsInfoEnabled)
{
try
{
Log.Info(string.Format("{0} {1}", baseClient.TcpEndpoint, e.Message));
}
catch (SocketException ex)
{
Log.Info(string.Format("EndPoint not availaible: {0} {1}", e.Message, ex.Message));
}
}
baseClient._srvr.Disconnect(baseClient);
}
}
catch (Exception e)
{
if (Log.IsErrorEnabled)
{
Log.Error("OnReceiveHandler", e);
}
if (baseClient != null)
{
baseClient._srvr.Disconnect(baseClient);
}
}
}
/// <summary>
/// Called when a client is trying to connect to the server
/// </summary>
/// <param name="ar">Async result of the operation</param>
private void AcceptCallback(IAsyncResult ar)
{
Socket sock = null;
try
{
if (_listen == null)
{
return;
}
sock = _listen.EndAccept(ar);
sock.SendBufferSize = Constants.SendBufferSize;
sock.ReceiveBufferSize = Constants.ReceiveBufferSize;
sock.NoDelay = Constants.UseNoDelay;
BaseClient baseClient = null;
try
{
// Removing this message in favor of connection message in GameClient
// This will also reduce spam when server is pinged with 0 bytes - Tolakram
// string ip = sock.Connected ? sock.RemoteEndPoint.ToString() : "socket disconnected";
// Log.Info("Incoming connection from " + ip);
baseClient = GetNewClient();
baseClient.Socket = sock;
lock (_clientsLock)
{
_clients.Add(baseClient);
}
baseClient.OnConnect();
baseClient.BeginReceive();
}
catch (SocketException)
{
Log.Error("BaseServer SocketException");
if (baseClient != null)
{
Disconnect(baseClient);
}
}
catch (Exception e)
{
Log.Error("Client creation", e);
if (baseClient != null)
{
Disconnect(baseClient);
}
}
}
catch
{
Log.Error("AcceptCallback: Catch");
if (sock != null) // don't leave the socket open on exception
{
try
{
sock.Close();
}
catch
{
}
}
}
finally
{
if (_listen != null)
{
_listen.BeginAccept(_asyncAcceptCallback, this);
}
}
}