Question

I got the program for Wifi tethering which i got a open (non secured) hot spot in Android. I like to view the details of client (SSID and IP address) connected to my hotspot.
I used SocketAddress socketid=socket.getLocalSocketAddress(); and also used

public  void getLocalIpAddressString() {
   try {
       for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
          NetworkInterface intf = en.nextElement();
          for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
               if (!inetAddress.isLoopbackAddress()) {
                   // return inetAddress.getHostAddress().toString();
                    Toast.makeText(getApplicationContext(), inetAddress.getHostAddress().toString(),
                            Toast.LENGTH_SHORT).show();

                }
           }
        }
    } catch (Exception ex) {
      Log.e("IPADDRESS", ex.toString());
   }
  // return null;
   }

These will return only the local IP but can you please help me in getting the IP address of client connected to my Wifi Hotspot. Thank you.

Answer 1

Finally I got the response for getting the Client IP connected to my hotspot. The code below will track the Mac and IP changes each time a new client is added to my network

public void getClientList() {

    int macCount = 0;
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader("/proc/net/arp"));
        String line;
        while ((line = br.readLine()) != null) {
            String[] splitted = line.split(" +");

            if (splitted != null && splitted.length >= 4) {
                // Basic sanity check
                String mac = splitted[3];

                if (mac.matches("..:..:..:..:..:..")) {
                    macCount++;
                    ClientList.add("Client(" + macCount + ")");
                    IpAddr.add(splitted[0]);
                    HWAddr.add(splitted[3]);
                    Device.add(splitted[5]);
                    Toast.makeText(
                            getApplicationContext(),
                            "Mac_Count  " + macCount + "   MAC_ADDRESS  "
                                    + mac, Toast.LENGTH_SHORT).show();
                    for (int i = 0; i < splitted.length; i++)
                        System.out.println("Addressssssss     "
                                + splitted[i]);
                }
            }
        }