/// <summary>
/// Starts processes to capture network data for all available devices
/// </summary>
protected void StartNetworkDataCapture()
{
captureResetEvent.Set();
var devices = CaptureDeviceList.Instance;
foreach (var device in devices)
{
if (isAdvancedLogEnabled)
{
LogProvider.Log.Info(this, $"Found device: {device.Name}, {device.Description}. [{SiteString}]");
}
try
{
device.Open(DeviceMode.Normal);
var captureDevice = new CaptureDevice(device)
{
IsOpened = true
};
captureDevices.Push(captureDevice);
}
catch (Exception e)
{
LogProvider.Log.Error(this, $"Failed to open device {device.Name}. [{SiteString}]", e);
}
}
captureDevices.ForEach(captureDevice => Task.Run(() => CaptureData(captureDevice)));
}
/// <summary>
/// Captures network data of the specified device
/// </summary>
/// <param name="device">Device to capture</param>
protected void CaptureData(CaptureDevice captureDevice)
{
if (captureResetEvent.IsSet)
{
captureResetEvent.Reset();
}
while (true)
{
if (cancellationTokenSource.IsCancellationRequested)
{
try
{
captureDevice.Device.Close();
captureDevice.IsOpened = false;
}
catch (Exception e)
{
LogProvider.Log.Error(this, $"Device {captureDevice.Device.Name} has not been closed. [{SiteString}]", e);
}
if (!captureResetEvent.IsSet && captureDevices.All(x => !x.IsOpened))
{
captureResetEvent.Set();
}
return;
}
try
{
var nextPacket = captureDevice.Device.GetNextPacket();
if (nextPacket != null)
{
ParsePacket(nextPacket);
}
else
{
Task.Delay(NoDataDelay).Wait();
}
}
catch (Exception e)
{
if (captureDevice.ParserLogErrorCounter < 3)
{
LogProvider.Log.Error(this, $"Data from {captureDevice.Device.Name}, {captureDevice.Device.Description} couldn't be parsed due to internal error. [{SiteString}]", e);
captureDevice.ParserLogErrorCounter++;
}
}
}
}
