private void SendCommandCallback(IAsyncResult result)
{
AsynchronousSendContext cx = null;
try
{
cx = (AsynchronousSendContext)result.AsyncState;
_Stream.EndWrite(result);
if (cx.IsSendAllBytes == true)
{
cx.FillBuffer();
_Stream.BeginWrite(cx.Buffer.Array, 0, cx.SendBufferSize, this.SendCommandCallback, cx);
}
else
{
_SendCommandDone.Set();
}
}
catch (Exception ex)
{
cx.Exception = ex;
}
if (cx.Exception != null)
{
try
{
_SendCommandDone.Set();
}
catch (ObjectDisposedException) { }
}
}
private void SendCommand(Byte[] bytes)
{
AsynchronousSendContext cx = null;
if (this._TcpClient == null)
{
throw new Pop3ConnectException("Pop3 connection is closed");
}
try
{
cx = new AsynchronousSendContext(Encoding.ASCII, bytes);
cx.FillBuffer();
_Stream.BeginWrite(cx.Buffer.Array, 0, cx.SendBufferSize, this.SendCommandCallback, cx);
_SendCommandDone.WaitOne();
}
catch (Exception ex)
{
throw new Pop3SendException(ex);
}
finally
{
if (cx != null)
{
cx.Dispose();
}
}
if (cx.Exception != null)
{
throw cx.Exception;
}
}