public static bool ArpPing(string host)
{
try {
IPAddress[] ips = System.Net.Dns.GetHostAddresses(host);
if (ips.Length == 0)
{
return(false);
}
IPAddress ip = ips.First(o => o.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork);
if (!IpTools.OnSameNetwork(ips[0]))
{
return(false);
}
int len = 6;
byte[] mac = new byte[len];
byte[] byte_ip = ips[0].GetAddressBytes();
uint long_ip = (uint)(byte_ip[3] * 16777216 + byte_ip[2] * 65536 + byte_ip[1] * 256 + byte_ip[0]);
SendARP(long_ip, 0, mac, ref len);
return(true);
} catch {
return(false);
}
}
public static string ArpRequest(IPAddress ip)
{
try {
if (!IpTools.OnSameNetwork(ip))
{
return("");
}
int len = 6;
byte[] mac = new byte[len];
byte[] byte_ip = ip.GetAddressBytes();
uint long_ip = (uint)(byte_ip[3] * 16777216 + byte_ip[2] * 65536 + byte_ip[1] * 256 + byte_ip[0]);
SendARP(long_ip, 0, mac, ref len);
return(BitConverter.ToString(mac, 0, len).Replace("-", ":"));
} catch {
return("");
}
}
