private void SendPacket(byte[] packet)
{
lastPacket = packet;
retries = 0;
DataLink.SendPacket(packet);
timer.Start();
}
private static void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
{
var i = 0;
while (_serialPort.BytesToRead > 1)
{
i++;
var byteBuffer = new byte[4];
_serialPort.Read(byteBuffer, 0, 2);
var dec = DeCycle(byteBuffer);
DataLink.RecievePacket(dec);
}
}
private void ResendPacket(object sender, EventArgs e)
{
if (retries++ < maxRetries)
{
DataLink.SendPacket(lastPacket);
return;
}
if (lastPacket[0] == (byte)MessageType.FileReceivedOk ||
lastPacket[0] == (byte)MessageType.FileReceived ||
lastPacket[0] == (byte)MessageType.Disconnect ||
lastPacket[0] == (byte)MessageType.DisconnectOk)
{
timer.Stop();
return;
}
CloseButton.IsEnabled = true;
FileBox.IsEnabled = true;
DirectoryBox.IsEnabled = true;
DisconnectButton.IsEnabled = true;
if (fileStream != null)
{
fileStream.Close();
}
if (sending == true && fileStream.Position == 0)
{
StatusText.Text = "Физическое соединение открыто.";
MessageBox.Show("Принимающая сторона не готова к логическому соединению.");
}
else
{
SendPacket(new byte[] { (byte)MessageType.Disconnect });
StatusText.Text = "Логическое соединение потеряно.";
MessageBox.Show("Логическое соединение потеряно.");
}
sending = null;
}