/// <summary>
/// Closes the currently open device
/// </summary>
public void CloseDevice()
{
if (bRun)
{
throw new InvalidOperationException("A capture is currently running");
}
if (iptrOpenDevice != IntPtr.Zero)
{
pcap_close(iptrOpenDevice);
iptrOpenDevice = IntPtr.Zero;
wpcCurrentOpenInterface = null;
wpfCurrentFilter = null;
}
}
/// <summary>
/// Opens the specified device for sniffing
/// </summary>
/// <param name="wpiInterface">The device to open</param>
/// <param name="pofFlags">Configuration flags for opening</param>
public void OpenDevice(WinPcapInterface wpiInterface, PcapOpenflags pofFlags)
{
if (bRun)
{
throw new InvalidOperationException("A capture is currently running");
}
CloseDevice();
string strErrorbuff = "";
IntPtr ptrDevice = pcap_open(wpiInterface.Name, 65535, pofFlags, 5, IntPtr.Zero, strErrorbuff);
if (ptrDevice == IntPtr.Zero)
{
throw new Exception("Error when trying to open WinPcap device: " + strErrorbuff);
}
iptrOpenDevice = ptrDevice;
wpcCurrentOpenInterface = wpiInterface;
wpfCurrentFilter = CompileFilter("", true, new Subnetmask());
}