■ SendARP API 함수를 사용해 MAC 주소를 구하는 방법을 보여준다.
▶ SendARP API 함수 : MAC 주소 구하기 예제 (C#)
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string macAddress = GetMACAddress("192.168.29.196")); |
▶ SendARP API 함수 : MAC 주소 구하기 (C#)
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using System; using System.Net; using System.Runtime.InteropServices; #region ARP 보내기 - SendARP(destinationIPValue, sourceIPValue, physicalAddressArray, physicalAddresArrayLength) /// <summary> /// ARP 보내기 /// </summary> /// <param name="destinationIPValue">목적 IP 값</param> /// <param name="sourceIPValue">소스 IP 값</param> /// <param name="physicalAddressArray">물리적 주소 배열</param> /// <param name="physicalAddresArrayLength">물리적 주소 배열 길이</param> /// <returns>처리 결과</returns> [DllImport("iphlpapi.dll", ExactSpelling = true)] private static extern int SendARP(int destinationIPValue, int sourceIPValue, byte[] physicalAddressArray, ref uint physicalAddresArrayLength); #endregion #region MAC 주소 구하기 - GetMACAddress(ipAddressString) /// <summary> /// MAC 주소 구하기 /// </summary> /// <param name="ipAddressString">IP 주소 문자열</param> /// <returns>MAC 주소</returns> public string GetMACAddress(string ipAddressString) { IPAddress destinationIPAddress = IPAddress.Parse(ipAddressString); byte[] destinationIPAddressByteArray = new byte[6]; uint destinationIPAddressByteArrayLength = (uint)destinationIPAddressByteArray.Length; int destinationIPValue = BitConverter.ToInt32(destinationIPAddress.GetAddressBytes(), 0); int returnCode = SendARP(destinationIPValue, 0, destinationIPAddressByteArray, ref destinationIPAddressByteArrayLength); if(returnCode != 0) { return null; } string[] destinationIPAddressStringArray = new string[(int)destinationIPAddressByteArrayLength]; for(int i = 0; i < destinationIPAddressByteArrayLength; i++) { destinationIPAddressStringArray[i] = destinationIPAddressByteArray[i].ToString("X2"); } string maxAddress = string.Join(":", destinationIPAddressStringArray); return maxAddress; } #endregion |