private void init(int deviceId)
{
// Retrieve the device list
CaptureDeviceList devices = CaptureDeviceList.Instance;
// If no devices were found print an error
if (devices.Count < 1)
{
Console.WriteLine("No devices were found on this machine in NetStatsService.init()");
return;
}
int i = deviceId;
_device = devices[i] as NpcapDevice;
// Register our handler function to the 'pcap statistics' event
_device.OnPcapStatistics +=
new SharpPcap.Npcap.StatisticsModeEventHandler(device_OnPcapStatistics);
// Open the device for capturing
_device.Open();
// Handle TCP packets only
_device.Filter = "tcp";
// Set device to statistics mode
_device.Mode = SharpPcap.Npcap.CaptureMode.Statistics;
}
//checks device/interface to see if there is traffic on it, same logic as Sniffer
private static void IsDeviceActive(NpcapDevice device)
{
device.OnPacketArrival += new SharpPcap.PacketArrivalEventHandler(DeviceConnectivityHandler);
device.Open(DeviceMode.Promiscuous, 1000);
device.Filter = "ip and tcp";
device.StartCapture();
Thread.Sleep(1000);
device.StopCapture();
device.Close();
}
/*
* get list of all device interfaces on machine, iterate through list and check for wifi/ethernet connectivity
* collect packets for 00:01:30, print to console.
*/
private static void Sniffer()
{
NpcapDeviceList devices = NpcapDeviceList.Instance;
NpcapDevice activeDevice = null;
foreach (NpcapDevice currentDevice in devices)
{
IsDeviceActive(currentDevice);
if ((isDeviceActive && ((currentDevice.ToString().Contains("FriendlyName: Wi-Fi")) || (currentDevice.ToString().Contains("FriendlyName: Ethernet")))))
{
activeDevice = currentDevice;
break;
}
}
foreach (PcapAddress ipaddress in activeDevice.Addresses)
{
if (ipaddress.Addr != null && ipaddress.Addr.ipAddress != null)
{
if (ipaddress.Addr.ipAddress.ToString().Contains("192.168"))
{
currentDeviceLocalIp = ipaddress.Addr.ipAddress;
break;
}
}
}
activeDevice.OnPacketArrival += new SharpPcap.PacketArrivalEventHandler(PacketHandler);
Console.WriteLine(string.Format("{0}\n", activeDevice));
Console.WriteLine("Initiating Packet Capture...");
activeDevice.Open(DeviceMode.Promiscuous, 1000);
activeDevice.Filter = "ip and tcp";
activeDevice.StartCapture();
Thread.Sleep(90000);
activeDevice.StopCapture();
activeDevice.Close();
Console.WriteLine("...Packet Capture complete.");
Console.WriteLine("==============================================\n\n\n");
}