Se agrego una nueva clase Network, funciones utiles de redes

Author: jencisopy

commons/src/main/java/org/javabeanstack/util/Network.java

@@ -0,0 +1,73 @@
+/*
+* JavaBeanStack FrameWork
+*
+* Copyright (C) 2017 - 2018 Jorge Enciso
+* Email: jorge.enciso.r@gmail.com
+*        jenciso@javabeanstack.org
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or (at your option) any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+* MA 02110-1301  USA
+ */
+package org.javabeanstack.util;
+
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.util.Enumeration;
+
+/**
+ *
+ * @author Jorge Enciso
+ */
+public class Network {
+
+    public static String getLocalIpAdress() {
+        String result = "";
+        try {
+            InetAddress address = InetAddress.getLocalHost();
+            result = address.getHostAddress();
+        } catch (UnknownHostException ex) {
+            System.out.println("Could not find IP address for this host");
+        }
+        if (result.isEmpty()) {
+            try {
+                Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
+                while (networkInterfaces.hasMoreElements()) {
+                    NetworkInterface networkInterface = networkInterfaces.nextElement();
+                    if (!networkInterface.isUp()) {
+                        continue;
+                    }
+                    if (networkInterface.isLoopback()) {
+                        continue;
+                    }
+                    Enumeration<InetAddress> addresses = networkInterface.getInetAddresses();
+                    while (addresses.hasMoreElements()) {
+                        InetAddress address = addresses.nextElement();
+                        if (address.isLinkLocalAddress()) {
+                            continue;
+                        }
+                        if (address.isSiteLocalAddress()) {
+                            result = address.getHostAddress();
+                        }
+                    }
+                }
+            } catch (SocketException ex) {
+                System.out.println("Could not find IP address for this host");
+            }
+        }
+        return result;
+    }
+}