private void CallbackReadHeader(IAsyncResult ar)
{
ReadMessageToken readMessageToken = ar.AsyncState as ReadMessageToken;
try
{
if (readMessageToken != null)
{
int bytesRead = readMessageToken.Socket.EndReceive(ar);
if (bytesRead < readMessageToken.Buffer.Length)
{
while (bytesRead < readMessageToken.Buffer.Length)
{
bytesRead += readMessageToken.Socket.Receive(readMessageToken.Buffer, bytesRead,
readMessageToken.Buffer.Length - bytesRead, SocketFlags.None);
}
}
}
}
catch
{
if (readMessageToken != null)
{
readMessageToken.Buffer = null;
}
}
finally
{
if (readMessageToken != null)
{
readMessageToken.Event.Set();
}
}
}
public void HandleConnection(object obj)
{
if (_socket != null)
{
try
{
while (_socket.IsConnected())
{
// read header first
byte[] headerBytes = new byte[Message.MSG_HEADER_LENGTH];
ReadMessageToken readMessageToken = new ReadMessageToken
{
Buffer = headerBytes,
Event = new AutoResetEvent(false),
Socket = _socket
};
IAsyncResult result = _socket.BeginReceive(headerBytes, 0, headerBytes.Length, SocketFlags.None,
CallbackReadHeader, readMessageToken);
result.AsyncWaitHandle.WaitOne();
readMessageToken.Event.WaitOne();
if (readMessageToken.Buffer != null)
{
Message.MESSAGE_ID msgType = Message.GetMessageType(readMessageToken.Buffer);
int msgLength = Message.GetMessageLength(readMessageToken.Buffer);
if (msgLength > 0)
{
byte[] msgData = new byte[msgLength];
ReadCompleteMessage(msgData);
HandleMessage(msgType, msgData);
}
else
{
HandleMessage(msgType, null);
}
}
}
}
catch (Exception exception)
{
_logger.Log("HandleConnection- " + exception);
}
finally
{
_socket.DoClose();
}
}
}