[Improvement-3690][common] Get the native IP policy problem (获取本机ip策略问题 )

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/NetUtils.java

@@ -89,21 +89,22 @@ private static synchronized InetAddress getLocalAddress0() {
         }
         InetAddress localAddress = null;
         NetworkInterface networkInterface = findNetworkInterface();
-        Enumeration<InetAddress> addresses = networkInterface.getInetAddresses();
-        while (addresses.hasMoreElements()) {
-            Optional<InetAddress> addressOp = toValidAddress(addresses.nextElement());
-            if (addressOp.isPresent()) {
-                try {
-                    if (addressOp.get().isReachable(100)) {
-                        LOCAL_ADDRESS = addressOp.get();
-                        return LOCAL_ADDRESS;
+        if (networkInterface != null) {
+            Enumeration<InetAddress> addresses = networkInterface.getInetAddresses();
+            while (addresses.hasMoreElements()) {
+                Optional<InetAddress> addressOp = toValidAddress(addresses.nextElement());
+                if (addressOp.isPresent()) {
+                    try {
+                        if (addressOp.get().isReachable(100)) {
+                            LOCAL_ADDRESS = addressOp.get();
+                            return LOCAL_ADDRESS;
+                        }
+                    } catch (IOException e) {
+                        logger.warn("test address id reachable io exception", e);
                     }
-                } catch (IOException e) {
-                    logger.warn("test address id reachable io exception", e);
                 }
             }
         }
-
         try {
             localAddress = InetAddress.getLocalHost();
         } catch (UnknownHostException e) {
@@ -190,7 +191,7 @@ private static NetworkInterface findNetworkInterface() {
         if (null != result) {
             return result;
         }
-        return validNetworkInterfaces.get(0);
+        return findIntranetAddress(validNetworkInterfaces);
     }
 
     /**
@@ -227,4 +228,32 @@ private static boolean isSpecifyNetworkInterface(NetworkInterface networkInterfa
         String preferredNetworkInterface = System.getProperty(DOLPHIN_SCHEDULER_PREFERRED_NETWORK_INTERFACE);
         return Objects.equals(networkInterface.getDisplayName(), preferredNetworkInterface);
     }
+
+    /**
+     * Get the Intranet IP
+     *
+     * @return If no {@link NetworkInterface} is available , return <code>null</code>
+     */
+    public static NetworkInterface findIntranetAddress(List<NetworkInterface> validNetworkInterfaces) {
+
+        if (validNetworkInterfaces.isEmpty()) {
+            return null;
+        }
+        NetworkInterface networkInterface = null;
+        for (NetworkInterface ni : validNetworkInterfaces) {
+            Enumeration<InetAddress> address = ni.getInetAddresses();
+            while (address.hasMoreElements()) {
+                InetAddress ip = address.nextElement();
+                if (ip.isSiteLocalAddress()
+                        && !ip.isLoopbackAddress()
+                        && !ip.getHostAddress().contains(":")) {
+                    networkInterface = ni;
+                }
+            }
+        }
+        if (networkInterface == null) {
+            return validNetworkInterfaces.get(0);
+        }
+        return networkInterface;
+    }
 }