reference: http://vcpptips.wordpress.com/tag/gethostname/
reference: http://www.binarytides.com/blog/get-mac-address-from-ip-in-winsock/
//--------------------------------------------------------//
// Get Host IP Addresses //
//--------------------------------------------------------//
char szHost[256]="";
::gethostname(szHost,256);
hostent *pHost = ::gethostbyname(szHost);
for(BYTE i=0; ;i++)
{
//Get mac addresses of the ip
struct in_addr srcip;
srcip.S_un = ((struct in_addr *)(pHost->h_addr))->S_un;
unsigned char mac[6];
GetMacAddress(mac , srcip);
//Get host name
char *p = pHost->h_addr_list[i];
BYTE host_name[200];
memset(host_name, 0x00, 200);
if(p ==NULL)
break;
}