private void sendRetryFrame()
{
Frame retFrame = new Frame(new byte[0], Data.RETFrame);
stopSendingFrames();
Console.WriteLine("Sending RET...");
physicalLayer.sendFrame(retFrame.serialize());
continueSendingFrames();
}
private void sendLinkFrame()
{
while (true)
{
if (physicalLayer.connectionActive)
{
if (linkFramesSended >= 3)
{
linkStatus = false;
return;
}
else
{
if (canSend)
{
Frame LinkFrame = new Frame(new byte[0], Data.LINKFrame);
stopSendingFrames();
Console.WriteLine("Sending LINK...");
physicalLayer.sendFrame(LinkFrame.serialize());
continueSendingFrames();
linkFramesSended += 1;
}
}
}
Thread.Sleep(Data.LinkFrameTimeout);
}
}
//Обработка информационного кадра
private void processInfoFrame(Frame frame)
{
Frame ackFrame = new Frame(new byte[0], Data.ACKFrame);
Console.WriteLine(getString(frame.getData()));
stopSendingFrames();
Console.WriteLine("Sending ACK...");
physicalLayer.sendFrame(ackFrame.serialize());
continueSendingFrames();
this.stringsBuffer.Enqueue(getString(frame.getData()));
}
private void sendLinkAckFrame()
{
Frame LinkACKFrame = new Frame(new byte[0], Data.LINK_ACKFrame);
while (!canSend) { }
stopSendingFrames();
Console.WriteLine("Sending LINK_ACK...");
physicalLayer.sendFrame(LinkACKFrame.serialize());
continueSendingFrames();
}
//Обработка системного кадра
private void processControlFrame(Frame frame)
{
//Если пришел ACK, то удалять из очереди и ставить флаг wasSended = false
if (frame.getType() == Data.ACKFrame)
{
lock (framesToSend)
{
Frame pulled = null;
framesToSend.TryDequeue(out pulled);
}
Console.WriteLine("ACK received");
this.frameWasSended = false;
}
//Если пришел RET, то ставить флаг wasSended = false;
if (frame.getType() == Data.RETFrame)
{
this.frameWasSended = false;
}
if (frame.getType() == Data.LINKFrame)
{
sendLinkAckFrame();
}
if (frame.getType() == Data.LINK_ACKFrame)
{
linkStatus = true;
linkFramesSended = 0;
}
}
