private void SendAcknowledgedCommand(Packet request)
{
if (transmitter == null)
{
throw new InvalidOperationException();
}
var answerCommand = Command.ReplyNegativeAcknowledge;
do
{
if (answerCommand == Command.ReplyNegativeAcknowledge)
{
transmitter.DiscardPendingPackets();
transmitter.SendPacket(request);
}
answerCommand = transmitter.ReceivePacket(TimeSpan.FromSeconds(3)).Command;
}while (answerCommand != Command.ReplyAcknowledge);
}