Arrow پیدا کردن MAC Address از روی IP
با کمک توابع API میتونیم این کارو انجام بدیم
دقت کنید در صورتی که سیستمی که باهاش در ارتباط هستیم در رنج IP ما قرار نداشت هیچ خروجی نخواهیم داشت
کد PHP:
[System.Runtime.InteropServices.DllImport("Iphlpapi.dll", EntryPoint = "SendARP")]
internal extern static Int32 SendArp(Int32 destIpAddress, Int32 srcIpAddress, byte[] macAddress, ref Int32 macAddressLength);
public static System.Net.NetworkInformation.PhysicalAddress GetMacFromIP(System.Net.IPAddress IP)
{
if (IP.AddressFamily != System.Net.Sockets.AddressFamily.InterNetwork)
throw new ArgumentException("supports just IPv4 addresses");
Int32 addrInt = IpToInt(IP);
Int32 srcAddrInt = 0;
byte[] mac = new byte[6]; // 48 bit
int length = mac.Length;
int reply = SendArp(addrInt, srcAddrInt, mac, ref length);
byte[] emptyMac = new byte[12];
if (reply != 0)
{
//No MAC Address found for the IP Address
return new System.Net.NetworkInformation.PhysicalAddress(emptyMac);
}
return new System.Net.NetworkInformation.PhysicalAddress(mac);
}
private static Int32 IpToInt(System.Net.IPAddress IP)
{
byte[] bytes = IP.GetAddressBytes();
return BitConverter.ToInt32(bytes, 0);
}