/// <summary>
/// Starts asyncronous retreival of the RSS Feed.
/// </summary>
/// <param name="callback">An System.AsyncCallback that represents the callback method.</param>
/// <param name="state">An object that can be used to access state information for the asynchronous operation.</param>
/// <returns>The System.IAsyncResult that identifies the asynchronous request. </returns>
public override IAsyncResult BeginReceive(AsyncCallback callback, object state)
{
//return base.BeginReceive(callback, state);
return(Transport.BeginReceive(this.Destination, callback, state));
}