Added helper method to get local IP addresses

src/zutil/net/InetScanner.java

@@ -4,7 +4,14 @@ import zutil.osal.MultiCommandExecutor;
 import zutil.osal.OSAbstractionLayer;
 
 import java.io.*;
+import java.net.Inet4Address;
 import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
 
 /**
  * This class is a IPv4 scanner, it will scan a
@@ -103,9 +110,30 @@ public class InetScanner {
         return line.contains("TTL=") || line.contains("ttl=");
     }
 
+    /**
+     * @return a list of IPv4 addresses for the all local network cards
+     */
+    public static List<InetAddress> getLocalInet4Address(){
+        ArrayList<InetAddress> ips = new ArrayList<>();
+        try {
+            Enumeration<NetworkInterface> netIntf = NetworkInterface.getNetworkInterfaces();
+            while(netIntf.hasMoreElements()){
+                Enumeration<InetAddress> addresses = netIntf.nextElement().getInetAddresses();
+                while (addresses.hasMoreElements()){
+                    InetAddress ip = addresses.nextElement();
+                    if (ip instanceof Inet4Address && ip.isSiteLocalAddress())
+                        ips.add(ip);
+                }
+            }
+        } catch (SocketException e) {
+            e.printStackTrace();
+        }
+        return ips;
+    }
 
 
     public interface InetScanListener {
         void foundInetAddress(InetAddress ip);
     }
+
 }