private void ReadCallback(IAsyncResult ar)
{
byte[] rcb = ( byte[] )ar.AsyncState;
int bytes_read = _channel.EndReceive(ar);
ConsoleOutput.Trace("ReadCallback: " + bytes_read);
// copy to circular reading buffer
_buffer.Write(rcb, bytes_read);
// if has more data
while (_buffer.Size() >= _next_size)
{
// is not waiting for data?
if (_next_size == 0) // == 0 means data length is not detected.
{
if (_buffer.Size() >= Constant.SIZE_OF_INT)
{
byte[] sb = _buffer.Read(Constant.SIZE_OF_INT);
_next_size = ByteConverter.BytesToInt(sb);
}
else
{
break;
}
}
// is waiting for data?
if (_next_size > 0)
{
// has enough data?
if (_buffer.Size() >= _next_size)
{
byte[] b = _buffer.Read(_next_size);
_listener.OnRead(_channel, b);
ConsoleOutput.Trace("OnRead: " + b.Length);
_next_size = 0; // == 0 means data length is not detected.
}
}
}
// continue reading
_channel.BeginReceive
(rcb, 0, rcb.Length
, SocketFlags.None
, new AsyncCallback(ReadCallback)
, rcb);
}