When you are working with a network device, the main element of Packet Sniffer SDK at the moment is HNAdapter component. HNAdapter is intended for emulating the work with a network device.

First you should create HNAdapter component:

[C++]
HANDLE hAdp = AdpCreate();

[Delphi]
hAdp : Pointer;
hAdp := AdpCreate();

To bind a network device with the HNAdapter component please use HNAdapter.ConfigHandle property.

Then you can open a network device by calling AdpOpenAdapter function.

After the network adapter has been opened successfully, you can get this device statistics (please see AdpUpdateAdapterStatistics, AdpGetTranWithoutErr, AdpGetRecvWithoutErr, AdpGetTranWithErr, AdpGetRecvWithErr, and AdpGetMissed), and get this device status and link speed (please see AdpGetLinkSpeed and AdpGetConnectStatus).

Also, after the network device has been opened, you can send packets using AdpSyncSend and AdpAsyncSend functions.

Consequently HNAdapter component is a universal component for working with the network devices. You can open any network device currently available by setting corresponding configuration in HNAdapterConfig.

[C++]
AdpSetConfig(hAdp,hCfg);
DWORD Err = AdpOpenAdapter(hAdp);
if (Err != HNERR_OK) 
{
   MessageBox(NULL,"Cannot open Network Adapter","Error !!!",MB_OK);
   return;
}

DWORD LinkSpeed = AdpGetLinkSpeed(hAdp);
if(AdpGetConnectStatus(hAdp)) MessageBox(NULL,"ON LINE","Connect Status !!!",MB_OK);
                         else MessageBox(NULL,"OFF LINE","Connect Status !!!",MB_OK);

[Delphi]
Err       : DWORD;
LinkSpeed : DWORD;

AdpSetConfig(hAdp,hCfg);
Err := AdpOpenAdapter(hAdp);
if (Err <> HNERR_OK) then
 begin
   MessageBox(0,'Cannot open Network Adapter','Error !!!',MB_OK);
   Exit;
 end;

LinkSpeed := AdpGetLinkSpeed(hAdp);
if(AdpGetConnectStatus(hAdp)) then MessageBox(0,'ON LINE','Connect Status !!!',MB_OK)
                              else MessageBox(0,'OFF LINE','Connect Status !!!',MB_OK);

Then you should make a BPF filter to capture IP traffic only (not totally low-level one).

Next step:

4: Create BPF filter