public bool StartSniffing(LivePcapDevice deviceToSniff)
{
try
{
device = deviceToSniff;
// Open the device for capturing
int readTimeoutMilliseconds = 1000;
//device.StopCaptureTimeout = new TimeSpan(0, 1, 0);
device.Open(DeviceMode.Promiscuous, readTimeoutMilliseconds);
device.SetFilter(GetFilterExpression());
packetQueue = new Queue();
sniffingThread = new Thread(new ThreadStart(SnifferLoop));
sniffingThread.Name = "Sniffing Thread";
sniffingThread.IsBackground = true;
sniffingThread.Start();
decodingThread = new Thread(new ThreadStart(DecoderLoop));
decodingThread.Name = "Decoding Thread";
decodingThread.IsBackground = true;
decodingThread.Start();
Log("Sniffing started");
}
catch (Exception e)
{
Log(e.ToString());
return false;
}
return true;
}
public bool StartSniffing(LivePcapDevice deviceToSniff)
{
try
{
device = deviceToSniff;
// Open the device for capturing
int readTimeoutMilliseconds = 1000;
//device.StopCaptureTimeout = new TimeSpan(0, 1, 0);
device.Open(DeviceMode.Promiscuous, readTimeoutMilliseconds);
device.SetFilter(GetFilterExpression());
packetQueue = new Queue();
sniffingThread = new Thread(new ThreadStart(SnifferLoop));
sniffingThread.Name = "Sniffing Thread";
sniffingThread.IsBackground = true;
sniffingThread.Start();
decodingThread = new Thread(new ThreadStart(DecoderLoop));
decodingThread.Name = "Decoding Thread";
decodingThread.IsBackground = true;
decodingThread.Start();
Log("Sniffing started");
}
catch (Exception e)
{
Log(e.ToString());
return(false);
}
return(true);
}
private void StartFilter()
{
m_Device = null;
while (!m_bStop)
{
try
{
LivePcapDeviceList devices = null;
devices = LivePcapDeviceList.Instance;
int i = 0;
/* Scan the list printing every entry */
foreach (LivePcapDevice dev in devices)
{
if (dev.Description.ToString() == m_strNIC)
{
m_Device = devices[i];
break;
}
else
{
i++;
}
}
if (m_Device == null)
{
m_IStatusUpdate.UpdateStatus("Failed to get handle to NIC");
}
else
{
//Open the device for capturing
int readTimeoutMilliseconds = 1000;
m_Device.Open(DeviceMode.Promiscuous, readTimeoutMilliseconds);
//Register our handler function to the 'packet arrival' event
m_Device.OnPacketArrival += new PacketArrivalEventHandler(device_OnPacketArrival);
// udpdump filter to capture only UDP/IP packets
string filter = "udp";
m_Device.SetFilter(filter);
if (m_dtBound != DateTime.MaxValue)
{
m_IStatusUpdate.UpdateStatus("Next update at " + (m_dtBound + m_spanLease).ToString());
}
else
{
m_IStatusUpdate.UpdateStatus("Started DHCP Client...");
}
// Start capture packets
m_Device.Capture();
// NO stop request...
if (!m_bStop)
{
if (m_Device != null)
{
m_Device.Close();
m_Device = null;
}
}
}
}
catch (Exception exc)
{
m_IStatusUpdate.UpdateStatus("Exception: " + exc.Message);
try
{
m_Device.Close();
}
catch (Exception)
{ }
m_Device = null;
}
Thread.Sleep(1000);
}
}
