/// <summary>
/// Ends a asynchronous BeginWriteRaw call.
/// </summary>
/// <param name="ar"></param>
/// <seealso cref="BeginWrite"/>
public void EndWrite(IAsyncResult ar)
{
log.Debug("EndWrite");
AsyncResult a = (AsyncResult)ar;
BeginWriteRawDelegate d = (BeginWriteRawDelegate)a.AsyncDelegate;
d.EndInvoke(ar);
}