Delphi DLL
Get Network Adapter IP and MAC Addresses

Retrieves network adapter information, including IP addresses (IPv4 and IPv6) and MAC addresses.
Note: This example requires Chilkat v10.1.3 or later.
Chilkat Delphi DLL Downloads

Delphi DLL
uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, JsonObject, Socket;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
socket: HCkSocket;
json: HCkJsonObject;
macAddress: PWideChar;

begin
success := False;

socket := CkSocket_Create();
json := CkJsonObject_Create();

CkJsonObject_putEmitCompact(json,False);

// Note: The GetAdaptersAddresses method was added in Chilkat v10.1.3.
success := CkSocket_GetAdaptersAddresses(socket,json);
if (success = False) then
  begin
    Memo1.Lines.Add(CkSocket__lastErrorText(socket));
    Exit;
  end;

Memo1.Lines.Add(CkJsonObject__emit(json));

// Here are some example results for Windows, Linux, and MacOS:

// -------------------------------------------------------
// Windows sample output

// {
//   "adapters": [
//     {
//       "name": "Ethernet",
//       "description": "Intel(R) Ethernet Connection (2) I219-LM",
//       "mac": "7C-D3-0B-25-DA-1C",
//       "ipv6": "fe80::1758:bec3:b2b8:7045",
//       "ipv4": "172.16.16.24"
//     },
//     {
//       "name": "Ethernet 2",
//       "description": "VirtualBox Host-Only Ethernet Adapter",
//       "mac": "0A-00-27-00-00-0B",
//       "ipv6": "fe80::19e6:8a84:527b:2f0e",
//       "ipv4": "192.168.56.1"
//     },
//     {
//       "name": "Bluetooth Network Connection",
//       "description": "Bluetooth Device (Personal Area Network)",
//       "mac": "F0-D5-BB-CE-6F-89",
//       "ipv6": "fe80::d94e:c01e:433e:2049",
//       "ipv4": "169.254.203.20"
//     },
//     {
//       "name": "Loopback Pseudo-Interface 1",
//       "description": "Software Loopback Interface 1",
//       "mac": "",
//       "ipv6": "::1",
//       "ipv4": "127.0.0.1"
//     }
//   ]
// }

// Note: The "description" element is only present when run on Windows.
// Here's sample code to get the MAC address for the "Ethernet" adapter
macAddress := CkJsonObject__findRecordString(json,'adapters','name','Ethernet',True,'mac');
if (CkJsonObject_getLastMethodSuccess(json) = False) then
  begin
    Memo1.Lines.Add('Failed to find MAC address for the Ethernet adapter');
  end
else
  begin
    Memo1.Lines.Add('MAC address: ' + macAddress);
  end;

// -------------------------------------------------------
// Linux Sample Output:

// {
//   "adapters": [
//     {
//       "name": "lo",
//       "mac": "",
//       "ipv4": "127.0.0.1",
//       "ipv6": "::1"
//     },
//     {
//       "name": "eth0",
//       "mac": "50-9A-4C-43-15-56",
//       "ipv4": "172.16.16.28",
//       "ipv6": "fe80::529a:4cff:fe43:1556"
//     }
//   ]
// }

// -------------------------------------------------------
// Android:

// On Android, accessing the MAC address directly is restricted on modern Android versions (API level 23 and above) due to privacy and security concerns. 
// Apps targeting Android 6.0 (API level 23) or higher cannot access the MAC address of the device using standard APIs.
// If you're developing for modern Android, consider using alternative identifiers (e.g., instance IDs) instead of the MAC address, as recommended by Google.
// 
// Chilkat will not return MAC addresses for Android, regardless of the API level.
// Only IP addresses are returned for Android.

// -------------------------------------------------------
// MacOS Sample Output:

// See Understanding MacOS Network Inteface Names

// {
//   "adapters": [
//     {
//       "name": "lo0",
//       "mac": "00-00-00-00-00-00",
//       "ipv4": "127.0.0.1",
//       "ipv6": "::1",
//       "ipv6_linkLocal": "fe80::1"
//     },
//     {
//       "name": "gif0",
//       "mac": "00-00-00-00-00-00"
//     },
//     {
//       "name": "stf0",
//       "mac": "00-00-00-00-00-00"
//     },
//     {
//       "name": "anpi1",
//       "mac": "DE-CF-89-6B-85-18"
//     },
//     {
//       "name": "anpi0",
//       "mac": "DE-CF-89-6B-85-17"
//     },
//     {
//       "name": "en0",
//       "mac": "14-98-77-38-2A-47",
//       "ipv6": "fe80::1cf4:e6db:6159:a9d5",
//       "ipv4": "172.16.16.30"
//     },
//     {
//       "name": "en7",
//       "mac": "DE-CF-89-6B-85-F7"
//     },
//     {
//       "name": "en8",
//       "mac": "DE-CF-89-6B-85-F8"
//     },
//     {
//       "name": "en2",
//       "mac": "36-69-36-B0-29-C0"
//     },
//     {
//       "name": "en3",
//       "mac": "36-69-36-B0-29-C4"
//     },
//     {
//       "name": "bridge0",
//       "mac": "36-69-36-B0-29-C0"
//     },
//     {
//       "name": "ap1",
//       "mac": "36-98-77-45-45-EC",
//       "ipv6": "fe80::3498:77ff:fe45:45ec"
//     },
//     {
//       "name": "en1",
//       "mac": "14-98-77-45-45-EC",
//       "ipv6": "fe80::149b:a396:ca4e:f18d",
//       "ipv4": "192.168.1.224"
//     },
//     {
//       "name": "awdl0",
//       "mac": "DE-4C-F0-5C-17-F9",
//       "ipv6": "fe80::dc4c:f0ff:fe5c:17f9"
//     },
//     {
//       "name": "llw0",
//       "mac": "DE-4C-F0-5C-17-F9",
//       "ipv6": "fe80::dc4c:f0ff:fe5c:17f9"
//     },
//     {
//       "name": "utun0",
//       "mac": "00-00-00-00-00-00",
//       "ipv6": "fe80::b3b3:cfbe:5790:9573"
//     },
//     {
//       "name": "utun1",
//       "mac": "00-00-00-00-00-00",
//       "ipv6": "fe80::e5:677f:9f70:7ad"
//     },
//     {
//       "name": "utun2",
//       "mac": "00-00-00-00-00-00",
//       "ipv6": "fe80::ce81:b1c:bd2c:69e"
//     },
//     {
//       "name": "utun3",
//       "mac": "00-00-00-00-00-00",
//       "ipv6": "fe80::87e5:c723:bbd:6656"
//     },
//     {
//       "name": "utun4",
//       "mac": "00-00-00-00-00-00",
//       "ipv6": "fe80::cb13:ae1a:9de3:392e"
//     }
//   ]
// }
// 

CkSocket_Dispose(socket);
CkJsonObject_Dispose(json);

end;