public void Start(uint adapterId)
{
// TODO: Support multiple adapters
uint errno;
errno = InitIfRequired();
if (errno != 0)
{
throw new Exception("Failed to initialize capture. NmApiInitalize returned: " + errno);
}
_engine = NetmonAPI.NmOpenCaptureEngineManaged();
errno = NetmonAPI.NmConfigAdapter(_engine, adapterId, captureCallback, IntPtr.Zero,
NmCaptureCallbackExitMode.DiscardRemainFrames);
if (errno != 0)
{
throw new Exception($"Error configuring adapter #{adapterId}. Errno: " + errno);
}
uint ret = NetmonAPI.NmStartCapture(_engine, adapterId, NmCaptureMode.Promiscuous);
if (ret != 0)
{
throw new Exception($"Failed to start capturing adapter #{adapterId}. NmStartCapture returned: {ret}");
}
}
/// <returns>A dictionary mapping Adapter IDs to their NetMon/.Net information structures</returns>
public Dictionary <uint, AdapterInformation> GetAdapters()
{
var output =
new Dictionary <uint, AdapterInformation>();
uint errno = InitIfRequired();
if (errno != 0)
{
Console.WriteLine("Failed to get adapters. Initialization of NetAPI returned: " + errno);
return(null);
}
using (NetMonEngine eng = NetmonAPI.NmOpenCaptureEngineManaged())
{
NM_NIC_ADAPTER_INFO[] netmonAdapters = NetmonAPI.NmGetAdaptersManaged(eng);
NetworkInterface[] dotnetAdapters = NetworkInterface.GetAllNetworkInterfaces();
// Iterating the NetMon adapters we found and matching 'NetworkInterface' objects to them.
for (uint i = 0; i < netmonAdapters.Length; i++)
{
NM_NIC_ADAPTER_INFO adapterInfo = netmonAdapters[i];
String nameStr = new String(adapterInfo.ConnectionName);
NetworkInterface ni = dotnetAdapters.Single(iface => nameStr.Contains(iface.Id));
// Add the adapter to output
output[i] = new AdapterInformation(adapterInfo, ni);
}
}
return(output);
}