fix(UtilAll) exclude local link ipv6 address

common/src/main/java/org/apache/rocketmq/common/UtilAll.java

@@ -440,13 +440,11 @@ public class UtilAll {
         return false;
     }
 
-    public static boolean isInternalV6IP(byte[] ip) {
-        if (ip.length != 16) {
-            throw new RuntimeException("illegal ipv6 bytes");
-        }
-
-        //FEC0:0000:0000:0000:0000:0000:0000:0000/10
-        if (ip[0] == (byte) 254 && ip[1] >= (byte) 192) {
+    public static boolean isInternalV6IP(InetAddress inetAddr) {
+        if (inetAddr.isAnyLocalAddress() // Wild card ipv6
+            || inetAddr.isLinkLocalAddress() // Single broadcast ipv6 address: fe80:xx:xx...
+            || inetAddr.isLoopbackAddress() //Loopback ipv6 address
+            || inetAddr.isSiteLocalAddress()) { // Site local ipv6 address: fec0:xx:xx...
             return true;
         }
         return false;
@@ -457,9 +455,6 @@ public class UtilAll {
             throw new RuntimeException("illegal ipv4 bytes");
         }
 
-//        if (ip[0] == (byte)30 && ip[1] == (byte)10 && ip[2] == (byte)163 && ip[3] == (byte)120) {
-//        }
-
         if (ip[0] >= (byte) 1 && ip[0] <= (byte) 126) {
             if (ip[1] == (byte) 1 && ip[2] == (byte) 1 && ip[3] == (byte) 1) {
                 return false;
@@ -550,7 +545,7 @@ public class UtilAll {
                         byte[] ipByte = ip.getAddress();
                         if (ipByte.length == 16) {
                             if (ipV6Check(ipByte)) {
-                                if (!isInternalV6IP(ipByte)) {
+                                if (!isInternalV6IP(ip)) {
                                     return ipByte;
                                 } else if (internalIP == null) {
                                     internalIP = ipByte;

common/src/test/java/org/apache/rocketmq/common/UtilAllTest.java

@@ -17,6 +17,8 @@
 
 package org.apache.rocketmq.common;
 
+import java.net.InetAddress;
+import java.net.UnknownHostException;
 import java.util.Properties;
 import org.junit.Test;
 
@@ -99,12 +101,12 @@ public class UtilAllTest {
     }
 
     @Test
-    public void testIPv6Check() {
-        byte[] nonInternalIp = UtilAll.string2bytes("24084004018081003FAA1DDE2B3F898A");
-        byte[] internalIp = UtilAll.string2bytes("FEC0000000000000000000000000FFFF");
-        assertThat(UtilAll.isInternalV6IP(nonInternalIp)).isFalse();
-        assertThat(UtilAll.isInternalV6IP(internalIp)).isTrue();
-        assertThat(UtilAll.ipToIPv6Str(nonInternalIp).toUpperCase()).isEqualTo("2408:4004:0180:8100:3FAA:1DDE:2B3F:898A");
+    public void testIPv6Check() throws UnknownHostException {
+        InetAddress nonInternal = InetAddress.getByName("2408:4004:0180:8100:3FAA:1DDE:2B3F:898A");
+        InetAddress internal = InetAddress.getByName("FE80:0000:0000:0000:0000:0000:0000:FFFF");
+        assertThat(UtilAll.isInternalV6IP(nonInternal)).isFalse();
+        assertThat(UtilAll.isInternalV6IP(internal)).isTrue();
+        assertThat(UtilAll.ipToIPv6Str(nonInternal.getAddress()).toUpperCase()).isEqualTo("2408:4004:0180:8100:3FAA:1DDE:2B3F:898A");
     }
 
     static class DemoConfig {

common/src/test/java/org/apache/rocketmq/common/message/MessageClientIDSetterTest.java

@@ -17,9 +17,8 @@
 
 package org.apache.rocketmq.common.message;
 
-import java.util.Calendar;
-import java.util.Date;
 import org.junit.Test;
+
 import static org.assertj.core.api.Assertions.assertThat;
 
 public class MessageClientIDSetterTest {