IPv6 support (#3773)

* IPv6 support

* AddressServerParamCheckUtil 合并到 IpUtil 及一些修改

* 解决魔法值

* 修改隐患

* 调整使用了类似 ip.indexOf(":") 查找是否有端口的地方的逻辑, 一些 ":" 替换为常量

* 删除无用测试

* IpUtil 改名 为 IPUtil, 涉及IP的相关方法名修改,涉及到的调用修改,检测IP的地方调用的isIPv4改为isIP. 修改涉及IP的字段长度及相关升级更新的sql

* no message

* no message

* no message

* no message

* 获取本机IP时,如果本机IP是IPv6并且包含网卡信息(V6地址中最后面的百分号和百分号后面的内容)则去除网卡信息

* 解决 AvoidComplexConditionRule(请不要在条件中使用复杂的表达式)

* 移除无用代码

* 添加注释

* 调整code style, 调整获取本机IP的逻辑

address/src/main/java/com/alibaba/nacos/address/component/AddressServerGeneratorManager.java

@@ -18,6 +18,7 @@ package com.alibaba.nacos.address.component;
 
 import com.alibaba.nacos.address.constant.AddressServerConstants;
 import com.alibaba.nacos.api.common.Constants;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.naming.core.Instance;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.stereotype.Component;
@@ -85,14 +86,11 @@ public class AddressServerGeneratorManager {
     }
     
     private String[] generateIpAndPort(String ip) {
-        
+        String[] result = IPUtil.splitIPPortStr(ip);
-        int index = ip.indexOf(AddressServerConstants.IP_PORT_SEPARATOR);
+        if (result.length != IPUtil.SPLIT_IP_PORT_RESULT_LENGTH) {
-        if (index != -1) {
+            return new String[] {result[0], String.valueOf(AddressServerConstants.DEFAULT_SERVER_PORT)};
-            
-            return new String[] {ip.substring(0, index), ip.substring(index + 1)};
         }
-        
+        return result;
-        return new String[] {ip, String.valueOf(AddressServerConstants.DEFAULT_SERVER_PORT)};
     }
     
     /**

address/src/main/java/com/alibaba/nacos/address/constant/AddressServerConstants.java

@@ -38,11 +38,6 @@ public interface AddressServerConstants {
      */
     String DEFAULT_PRODUCT = "nacos";
     
-    /**
-     * the separator between ip and port.
-     */
-    String IP_PORT_SEPARATOR = ":";
-    
     /**
      * the separator for service name between raw service name and group.
      */

address/src/main/java/com/alibaba/nacos/address/controller/AddressServerClusterController.java

@@ -20,9 +20,9 @@ import com.alibaba.nacos.address.component.AddressServerGeneratorManager;
 import com.alibaba.nacos.address.component.AddressServerManager;
 import com.alibaba.nacos.address.constant.AddressServerConstants;
 import com.alibaba.nacos.address.misc.Loggers;
-import com.alibaba.nacos.address.util.AddressServerParamCheckUtil;
 import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.api.naming.pojo.healthcheck.AbstractHealthChecker;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.naming.core.Cluster;
 import com.alibaba.nacos.naming.core.Instance;
 import com.alibaba.nacos.naming.core.Service;
@@ -87,8 +87,8 @@ public class AddressServerClusterController {
             clusterObj.setHealthChecker(new AbstractHealthChecker.None());
             serviceManager.createServiceIfAbsent(Constants.DEFAULT_NAMESPACE_ID, serviceName, false, clusterObj);
             String[] ipArray = addressServerManager.splitIps(ips);
-            String checkResult = AddressServerParamCheckUtil.checkIps(ipArray);
+            String checkResult = IPUtil.checkIPs(ipArray);
-            if (AddressServerParamCheckUtil.CHECK_OK.equals(checkResult)) {
+            if (IPUtil.checkOK(checkResult)) {
                 List<Instance> instanceList = addressServerGeneratorManager
                         .generateInstancesByIps(serviceName, rawProductName, clusterName, ipArray);
                 for (Instance instance : instanceList) {
@@ -143,8 +143,8 @@ public class AddressServerClusterController {
                 } else {
                     // delete specified ip list
                     String[] ipArray = addressServerManager.splitIps(ips);
-                    String checkResult = AddressServerParamCheckUtil.checkIps(ipArray);
+                    String checkResult = IPUtil.checkIPs(ipArray);
-                    if (AddressServerParamCheckUtil.CHECK_OK.equals(checkResult)) {
+                    if (IPUtil.checkOK(checkResult)) {
                         List<Instance> instanceList = addressServerGeneratorManager
                                 .generateInstancesByIps(serviceName, rawProductName, clusterName, ipArray);
                         serviceManager.removeInstance(Constants.DEFAULT_NAMESPACE_ID, serviceName, false,

address/src/main/java/com/alibaba/nacos/address/util/AddressServerParamCheckUtil.java

@@ -1,67 +0,0 @@
-/*
- * Copyright 1999-2018 Alibaba Group Holding Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.alibaba.nacos.address.util;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- * Provides a unified tool class for address server parameter verification.
- *
- * @author pbting
- * @date 2019-06-19 11:19 AM
- * @since 1.1.0
- */
-public class AddressServerParamCheckUtil {
-    
-    public static final String CHECK_OK = "ok";
-    
-    public static final String ILLEGAL_IP_PREFIX = "illegal ip: ";
-    
-    private static final String IP_REGEX = "(2(5[0-5]{1}|[0-4]\\d{1})|[0-1]?\\d{1,2})(\\.(2(5[0-5]{1}|[0-4]\\d{1})|[0-1]?\\d{1,2})){3}";
-    
-    private static final Pattern IP_PATTERN = Pattern.compile(IP_REGEX);
-    
-    /**
-     * Check ips.
-     *
-     * @param ips ips
-     * @return 'ok' if check passed, otherwise illegal ip
-     */
-    public static String checkIps(String... ips) {
-        
-        if (ips == null || ips.length == 0) {
-            
-            return CHECK_OK;
-        }
-        // illegal response
-        StringBuilder illegalResponse = new StringBuilder();
-        for (String ip : ips) {
-            Matcher matcher = IP_PATTERN.matcher(ip);
-            if (matcher.matches()) {
-                continue;
-            }
-            illegalResponse.append(ip + ",");
-        }
-        
-        if (illegalResponse.length() == 0) {
-            return CHECK_OK;
-        }
-        
-        return ILLEGAL_IP_PREFIX + illegalResponse.substring(0, illegalResponse.length() - 1);
-    }
-}

address/src/test/java/com/alibaba/nacos/address/ParamCheckUtilTests.java

@@ -16,17 +16,17 @@
 
 package com.alibaba.nacos.address;
 
-import com.alibaba.nacos.address.util.AddressServerParamCheckUtil;
+import com.alibaba.nacos.common.utils.IPUtil;
 import org.junit.Test;
 
 public class ParamCheckUtilTests {
     
     @Test
-    public void checkIps() {
+    public void checkIPs() {
         String[] ips = {"127.0.0.1"};
-        System.out.println(AddressServerParamCheckUtil.checkIps(ips));
+        System.out.println(IPUtil.checkIPs(ips));
         
         String[] illlegalIps = {"127.100.19", "127.0.0.1"};
-        System.err.println(AddressServerParamCheckUtil.checkIps(illlegalIps));
+        System.err.println(IPUtil.checkIPs(illlegalIps));
     }
 }

client/src/main/java/com/alibaba/nacos/client/config/impl/ServerListManager.java

@@ -30,6 +30,7 @@ import com.alibaba.nacos.common.http.param.Query;
 import com.alibaba.nacos.common.lifecycle.Closeable;
 import com.alibaba.nacos.common.notify.NotifyCenter;
 import com.alibaba.nacos.common.utils.IoUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.StringUtils;
 import com.alibaba.nacos.common.utils.ThreadUtils;
 import org.slf4j.Logger;
@@ -87,9 +88,9 @@ public class ServerListManager implements Closeable {
         this.isStarted = true;
         List<String> serverAddrs = new ArrayList<String>();
         for (String serverAddr : fixed) {
-            String[] serverAddrArr = serverAddr.split(":");
+            String[] serverAddrArr = IPUtil.splitIPPortStr(serverAddr);
             if (serverAddrArr.length == 1) {
-                serverAddrs.add(serverAddrArr[0] + ":" + ParamUtil.getDefaultServerPort());
+                serverAddrs.add(serverAddrArr[0] + IPUtil.IP_PORT_SPLITER + ParamUtil.getDefaultServerPort());
             } else {
                 serverAddrs.add(serverAddr);
             }
@@ -156,9 +157,10 @@ public class ServerListManager implements Closeable {
                 if (serverAddr.startsWith(HTTPS) || serverAddr.startsWith(HTTP)) {
                     serverAddrs.add(serverAddr);
                 } else {
-                    String[] serverAddrArr = serverAddr.split(":");
+                    String[] serverAddrArr = IPUtil.splitIPPortStr(serverAddr);
                     if (serverAddrArr.length == 1) {
-                        serverAddrs.add(HTTP + serverAddrArr[0] + ":" + ParamUtil.getDefaultServerPort());
+                        serverAddrs.add(HTTP + serverAddrArr[0] + IPUtil.IP_PORT_SPLITER + ParamUtil
+                                .getDefaultServerPort());
                     } else {
                         serverAddrs.add(HTTP + serverAddr);
                     }
@@ -355,10 +357,10 @@ public class ServerListManager implements Closeable {
                 List<String> result = new ArrayList<String>(lines.size());
                 for (String serverAddr : lines) {
                     if (StringUtils.isNotBlank(serverAddr)) {
-                        String[] ipPort = serverAddr.trim().split(":");
+                        String[] ipPort = IPUtil.splitIPPortStr(serverAddr.trim());
                         String ip = ipPort[0].trim();
                         if (ipPort.length == 1) {
-                            result.add(ip + ":" + ParamUtil.getDefaultServerPort());
+                            result.add(ip + IPUtil.IP_PORT_SPLITER + ParamUtil.getDefaultServerPort());
                         } else {
                             result.add(serverAddr);
                         }

client/src/main/java/com/alibaba/nacos/client/config/utils/ParamUtils.java

@@ -17,7 +17,7 @@
 package com.alibaba.nacos.client.config.utils;
 
 import com.alibaba.nacos.api.exception.NacosException;
-import com.alibaba.nacos.common.utils.IpUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.StringUtils;
 
 import java.util.List;
@@ -190,7 +190,7 @@ public class ParamUtils {
         }
         String[] ipsArr = betaIps.split(",");
         for (String ip : ipsArr) {
-            if (!IpUtils.isIpv4(ip)) {
+            if (!IPUtil.isIP(ip)) {
                 throw new NacosException(NacosException.CLIENT_INVALID_PARAM, "betaIps invalid");
             }
         }

client/src/main/java/com/alibaba/nacos/client/naming/net/NamingProxy.java

@@ -45,6 +45,7 @@ import com.alibaba.nacos.common.http.param.Query;
 import com.alibaba.nacos.common.lifecycle.Closeable;
 import com.alibaba.nacos.common.utils.HttpMethod;
 import com.alibaba.nacos.common.utils.IoUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.JacksonUtils;
 import com.alibaba.nacos.common.utils.StringUtils;
 import com.alibaba.nacos.common.utils.ThreadUtils;
@@ -588,8 +589,8 @@ public class NamingProxy implements Closeable {
         if (curServer.startsWith(UtilAndComs.HTTPS) || curServer.startsWith(UtilAndComs.HTTP)) {
             url = curServer + api;
         } else {
-            if (!curServer.contains(UtilAndComs.SERVER_ADDR_IP_SPLITER)) {
+            if (!IPUtil.containsPort(curServer)) {
-                curServer = curServer + UtilAndComs.SERVER_ADDR_IP_SPLITER + serverPort;
+                curServer = curServer + IPUtil.IP_PORT_SPLITER + serverPort;
             }
             url = NamingHttpClientManager.getInstance().getPrefix() + curServer + api;
         }

client/src/main/java/com/alibaba/nacos/client/naming/utils/UtilAndComs.java

@@ -51,8 +51,6 @@ public class UtilAndComs {
     
     public static final String NACOS_NAMING_LOG_LEVEL = "com.alibaba.nacos.naming.log.level";
     
-    public static final String SERVER_ADDR_IP_SPLITER = ":";
-    
     public static final int DEFAULT_CLIENT_BEAT_THREAD_COUNT =
             Runtime.getRuntime().availableProcessors() > 1 ? Runtime.getRuntime().availableProcessors() / 2 : 1;
     

common/src/main/java/com/alibaba/nacos/common/tls/SelfHostnameVerifier.java

@@ -16,7 +16,7 @@
 
 package com.alibaba.nacos.common.tls;
 
-import com.alibaba.nacos.common.utils.IpUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -38,7 +38,7 @@ public final class SelfHostnameVerifier implements HostnameVerifier {
     
     private static ConcurrentHashMap<String, Boolean> hosts = new ConcurrentHashMap<String, Boolean>();
     
-    private static final String[] LOCALHOST_HOSTNAME = new String[] {"localhost", "127.0.0.1"};
+    private static final String[] LOCALHOST_HOSTNAME = new String[] {"localhost", IPUtil.localHostIP()};
     
     public SelfHostnameVerifier(HostnameVerifier hv) {
         this.hv = hv;
@@ -49,22 +49,22 @@ public final class SelfHostnameVerifier implements HostnameVerifier {
         if (LOCALHOST_HOSTNAME[0].equalsIgnoreCase(hostname) || LOCALHOST_HOSTNAME[1].equals(hostname)) {
             return true;
         }
-        if (isIpv4(hostname)) {
+        if (isIP(hostname)) {
             return true;
         }
         return hv.verify(hostname, session);
     }
     
-    private static boolean isIpv4(String host) {
+    private static boolean isIP(String host) {
         if (host == null || host.isEmpty()) {
-            LOGGER.warn("host is empty, isIPv4 = false");
+            LOGGER.warn("host is empty, isIP = false");
             return false;
         }
         Boolean cacheHostVerify = hosts.get(host);
         if (cacheHostVerify != null) {
             return cacheHostVerify;
         }
-        boolean isIp = IpUtils.isIpv4(host);
+        boolean isIp = IPUtil.isIP(host);
         hosts.putIfAbsent(host, isIp);
         return isIp;
     }

common/src/main/java/com/alibaba/nacos/common/utils/IPUtil.java

@@ -0,0 +1,222 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.alibaba.nacos.common.utils;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * ip tool.
+ *
+ * @author Nacos
+ */
+@SuppressWarnings({"checkstyle:AbbreviationAsWordInName", "PMD.ClassNamingShouldBeCamelRule"})
+public class IPUtil {
+    
+    public static final boolean PREFER_IPV6_ADDRESSES = Boolean.parseBoolean(System.getProperty("java.net.preferIPv6Addresses"));
+    
+    public static final String IPV6_START_MARK = "[";
+    
+    public static final String IPV6_END_MARK = "]";
+    
+    public static final String ILLEGAL_IP_PREFIX = "illegal ip: ";
+    
+    public static final String IP_PORT_SPLITER = ":";
+    
+    public static final int SPLIT_IP_PORT_RESULT_LENGTH = 2;
+    
+    public static final String PERCENT_SIGN_IN_IPV6 = "%";
+    
+    private static final String LOCAL_HOST_IP_V4 = "127.0.0.1";
+    
+    private static final String LOCAL_HOST_IP_V6 = "[::1]";
+    
+    private static Pattern ipv4Pattern = Pattern.compile("\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}");
+    
+    private static final int IPV4_ADDRESS_LENGTH = 4;
+    
+    private static final int IPV6_ADDRESS_LENGTH = 16;
+    
+    private static final String CHECK_OK = "ok";
+    
+    /**
+     * get localhost ip.
+     * @return java.lang.String
+     */
+    public static String localHostIP() {
+        if (PREFER_IPV6_ADDRESSES) {
+            return LOCAL_HOST_IP_V6;
+        }
+        return LOCAL_HOST_IP_V4;
+    }
+    
+    /**
+     * check whether the ip address is IPv4.
+     *
+     * @param addr ip address
+     * @return boolean
+     */
+    public static boolean isIPv4(String addr) {
+        try {
+            return InetAddress.getByName(addr).getAddress().length == IPV4_ADDRESS_LENGTH;
+        } catch (UnknownHostException e) {
+            return false;
+        }
+    }
+    
+    /**
+     * check whether the ip address is IPv6.
+     *
+     * @param addr ip address
+     * @return boolean
+     */
+    public static boolean isIPv6(String addr) {
+        try {
+            return InetAddress.getByName(addr).getAddress().length == IPV6_ADDRESS_LENGTH;
+        } catch (UnknownHostException e) {
+            return false;
+        }
+    }
+    
+    /**
+     * check whether the str is ip address (IPv4 or IPv6).
+     *
+     * @param addr ip address str
+     * @return boolean
+     */
+    public static boolean isIP(String addr) {
+        try {
+            InetAddress.getByName(addr);
+            return true;
+        } catch (UnknownHostException e) {
+            return false;
+        }
+    }
+    
+    /**
+     * Check if the address contains a port.
+     * 2020/9/3 14:53
+     * @param address address string
+     * @return boolean
+     */
+    public static boolean containsPort(String address) {
+        return splitIPPortStr(address).length == SPLIT_IP_PORT_RESULT_LENGTH;
+    }
+    
+    /**
+     * Split IP and port strings, support IPv4 and IPv6, IP in IPv6 must be enclosed with [].
+     *
+     * @param str ip and port string
+     * @return java.lang.String[]
+     */
+    public static String[] splitIPPortStr(String str) {
+        if (StringUtils.isBlank(str)) {
+            throw new IllegalArgumentException("ip and port string cannot be empty!");
+        }
+        String[] serverAddrArr;
+        if (str.startsWith(IPV6_START_MARK) && StringUtils.containsIgnoreCase(str, IPV6_END_MARK)) {
+            if (str.endsWith(IPV6_END_MARK)) {
+                serverAddrArr = new String[1];
+                serverAddrArr[0] = str;
+            } else {
+                serverAddrArr = new String[2];
+                serverAddrArr[0] = str.substring(0, (str.indexOf(IPV6_END_MARK) + 1));
+                serverAddrArr[1] = str.substring((str.indexOf(IPV6_END_MARK) + 2));
+            }
+            if (!isIPv6(serverAddrArr[0])) {
+                throw new IllegalArgumentException("The IPv6 address(\"" + serverAddrArr[0] + "\") is incorrect.");
+            }
+        } else {
+            serverAddrArr = str.split(":");
+            if (serverAddrArr.length > SPLIT_IP_PORT_RESULT_LENGTH) {
+                throw new IllegalArgumentException("The IP address(\"" + str
+                        + "\") is incorrect. If it is an IPv6 address, please use [] to enclose the IP part!");
+            }
+            if (!isIPv4(serverAddrArr[0])) {
+                throw new IllegalArgumentException("The IPv4 address(\"" + serverAddrArr[0] + "\") is incorrect.");
+            }
+        }
+        return serverAddrArr;
+    }
+    
+    /**
+     * Resolve the IP from the string containing the IP address.
+     * @param str string containing IP address
+     * @return java.lang.String
+     */
+    public static String getIPFromString(String str) {
+        if (StringUtils.isBlank(str)) {
+            return "";
+        }
+        String result = "";
+        if (StringUtils.containsIgnoreCase(str, IPV6_START_MARK) && StringUtils.containsIgnoreCase(str, IPV6_END_MARK)) {
+            result = str.substring(str.indexOf(IPV6_START_MARK), (str.indexOf(IPV6_END_MARK) + 1));
+            if (!isIPv6(result)) {
+                result = "";
+            }
+        } else {
+            Matcher m = ipv4Pattern.matcher(str);
+            if (m.find()) {
+                result = m.group();
+                if (!isIPv4(result)) {
+                    result = "";
+                }
+            }
+        }
+        return result;
+    }
+    
+    /**
+     * Check ips.
+     *
+     * @param ips ips
+     * @return 'ok' if check passed, otherwise illegal ip
+     */
+    public static String checkIPs(String... ips) {
+        
+        if (ips == null || ips.length == 0) {
+            
+            return CHECK_OK;
+        }
+        // illegal response
+        StringBuilder illegalResponse = new StringBuilder();
+        for (String ip : ips) {
+            if (IPUtil.isIP(ip)) {
+                continue;
+            }
+            illegalResponse.append(ip + ",");
+        }
+        
+        if (illegalResponse.length() == 0) {
+            return CHECK_OK;
+        }
+        
+        return ILLEGAL_IP_PREFIX + illegalResponse.substring(0, illegalResponse.length() - 1);
+    }
+    
+    /**
+     * Check whether checkIPs result is "ok".
+     * @param checkIPsResult checkIPs result
+     * @return boolean
+     */
+    public static boolean checkOK(String checkIPsResult) {
+        return CHECK_OK.equals(checkIPsResult);
+    }
+    
+}

common/src/main/java/com/alibaba/nacos/common/utils/IpUtils.java

@@ -1,49 +0,0 @@
-/*
- * Copyright 1999-2018 Alibaba Group Holding Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.alibaba.nacos.common.utils;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- * ip tool.
- *
- * @author Nacos
- */
-public class IpUtils {
-    
-    private static final Pattern IPV4_PATTERN = Pattern
-            .compile("^((25[0-5]|2[0-4]\\d|[01]?\\d\\d?)\\.){3}(25[0-5]|2[0-4]\\d|[01]?\\d\\d?)$");
-    
-    private static final Pattern IPV6_PATTERN = Pattern.compile("^([\\da-fA-F]{1,4}:){7}[\\da-fA-F]{1,4}$");
-    
-    public static boolean isIpv4(String addr) {
-        return isMatch(addr, IPV4_PATTERN);
-    }
-    
-    public static boolean isIpv6(String addr) {
-        return isMatch(addr, IPV6_PATTERN);
-    }
-    
-    private static boolean isMatch(String data, Pattern pattern) {
-        if (StringUtils.isBlank(data)) {
-            return false;
-        }
-        Matcher mat = pattern.matcher(data);
-        return mat.find();
-    }
-}

common/src/test/java/com/alibaba/nacos/common/utils/IPUtilTest.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.alibaba.nacos.common.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * test IpUtil.
+ * @ClassName: IpUtilTest
+ * @date 2020/9/3 10:31
+ */
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
+public class IPUtilTest {
+    
+    @Test
+    public void testIsIPv4() {
+        Assert.assertTrue(IPUtil.isIPv4("127.0.0.1"));
+        Assert.assertFalse(IPUtil.isIPv4("[::1]"));
+        Assert.assertFalse(IPUtil.isIPv4("asdfasf"));
+        Assert.assertFalse(IPUtil.isIPv4("ffgertert"));
+    }
+    
+    @Test
+    public void testIsIPv6() {
+        Assert.assertTrue(IPUtil.isIPv6("[::1]"));
+        Assert.assertFalse(IPUtil.isIPv6("127.0.0.1"));
+        Assert.assertFalse(IPUtil.isIPv6("er34234"));
+    }
+    
+    @Test
+    public void testIsIP() {
+        Assert.assertTrue(IPUtil.isIP("[::1]"));
+        Assert.assertTrue(IPUtil.isIP("127.0.0.1"));
+        Assert.assertFalse(IPUtil.isIP("er34234"));
+    }
+    
+    @Test
+    public void testGetIPFromString() {
+        Assert.assertEquals("[::1]", IPUtil.getIPFromString("http://[::1]:666/xzdsfasdf/awerwef" + "?eewer=2&xxx=3"));
+        Assert.assertEquals("[::1]", IPUtil.getIPFromString(
+                "jdbc:mysql://[::1]:3306/nacos_config_test?characterEncoding=utf8&connectTimeout=1000"
+                        + "&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC"));
+        Assert.assertEquals("127.0.0.1",
+                IPUtil.getIPFromString("http://127.0.0.1:666/xzdsfasdf/awerwef" + "?eewer=2&xxx=3"));
+        Assert.assertEquals("127.0.0.1", IPUtil.getIPFromString(
+                "jdbc:mysql://127.0.0.1:3306/nacos_config_test?characterEncoding=utf8&connectTimeout=1000"
+                        + "&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC"));
+    
+        Assert.assertEquals("",
+                IPUtil.getIPFromString("http://[dddd]:666/xzdsfasdf/awerwef" + "?eewer=2&xxx=3"));
+        Assert.assertEquals("", IPUtil.getIPFromString(
+                "jdbc:mysql://[127.0.0.1]:3306/nacos_config_test?characterEncoding=utf8&connectTimeout=1000"
+                        + "&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC"));
+        Assert.assertEquals("", IPUtil.getIPFromString(
+                "jdbc:mysql://666.288.333.444:3306/nacos_config_test?characterEncoding=utf8&connectTimeout=1000"
+                        + "&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC"));
+    }
+    
+    @Test
+    public void testSplitIpPort() {
+        checkSplitIPPortStr("[::1]:88", false, "[::1]", "88");
+        checkSplitIPPortStr("[::1]", false, "[::1]");
+        checkSplitIPPortStr("127.0.0.1:88", false, "127.0.0.1", "88");
+        checkSplitIPPortStr("127.0.0.1", false, "127.0.0.1");
+        checkSplitIPPortStr("[2001:db8:0:0:1:0:0:1]:88", false, "[2001:db8:0:0:1:0:0:1]", "88");
+        checkSplitIPPortStr("[2001:0db8:0:0:1:0:0:1]:88", false, "[2001:0db8:0:0:1:0:0:1]", "88");
+        checkSplitIPPortStr("[2001:db8::1:0:0:1]:88", false, "[2001:db8::1:0:0:1]", "88");
+        checkSplitIPPortStr("[2001:db8::0:1:0:0:1]:88", false, "[2001:db8::0:1:0:0:1]", "88");
+        checkSplitIPPortStr("[2001:0db8::1:0:0:1]:88", false, "[2001:0db8::1:0:0:1]", "88");
+        checkSplitIPPortStr("[2001:db8:0:0:1::1]:88", false, "[2001:db8:0:0:1::1]", "88");
+        checkSplitIPPortStr("[2001:db8:0000:0:1::1]:88", false, "[2001:db8:0000:0:1::1]", "88");
+        checkSplitIPPortStr("[2001:DB8:0:0:1::1]:88", false, "[2001:DB8:0:0:1::1]", "88");
+        checkSplitIPPortStr("[fe80::3ce6:7132:808e:707a%19]:88", false, "[fe80::3ce6:7132:808e:707a%19]", "88");
+    
+        checkSplitIPPortStr("::1:88", true);
+        checkSplitIPPortStr("[::1:88", true);
+        checkSplitIPPortStr("[127.0.0.1]:88", true);
+    }
+    
+    /**
+     * checkSplitIpPortStr.
+     * 2020/9/4 14:12
+     * @param addr addr
+     * @param isEx isEx
+     * @param equalsStrs equalsStrs
+     */
+    public static void checkSplitIPPortStr(String addr, boolean isEx, String... equalsStrs) {
+        try {
+            String[] array = IPUtil.splitIPPortStr(addr);
+            Assert.assertTrue(array.length == equalsStrs.length);
+            if (array.length > 1) {
+                Assert.assertTrue(array[0].equals(equalsStrs[0]));
+                Assert.assertTrue(array[1].equals(equalsStrs[1]));
+            } else {
+                Assert.assertTrue(array[0].equals(equalsStrs[0]));
+            }
+        } catch (Exception ex) {
+            if (!isEx) {
+                // No exception is expected here, but an exception has occurred
+                Assert.assertTrue("Unexpected exception", false);
+            }
+        }
+    }
+    
+}

config/src/main/java/com/alibaba/nacos/config/server/service/datasource/ExternalDataSourceServiceImpl.java

@@ -24,11 +24,10 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 import javax.sql.DataSource;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.dao.DataAccessException;
@@ -83,8 +82,6 @@ public class ExternalDataSourceServiceImpl implements DataSourceService {
     
     private volatile int masterIndex;
     
-    private static Pattern ipPattern = Pattern.compile("\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}");
-    
     @Override
     public void init() {
         queryTimeout = ConvertUtils.toInt(System.getProperty("QUERYTIMEOUT"), 3);
@@ -190,10 +187,10 @@ public class ExternalDataSourceServiceImpl implements DataSourceService {
             if (!isHealthList.get(i)) {
                 if (i == masterIndex) {
                     // The master is unhealthy.
-                    return "DOWN:" + getIpFromUrl(dataSourceList.get(i).getJdbcUrl());
+                    return "DOWN:" + IPUtil.getIPFromString(dataSourceList.get(i).getJdbcUrl());
                 } else {
                     // The slave  is unhealthy.
-                    return "WARN:" + getIpFromUrl(dataSourceList.get(i).getJdbcUrl());
+                    return "WARN:" + IPUtil.getIPFromString(dataSourceList.get(i).getJdbcUrl());
                 }
             }
         }
@@ -201,16 +198,6 @@ public class ExternalDataSourceServiceImpl implements DataSourceService {
         return "UP";
     }
     
-    private String getIpFromUrl(String url) {
-        
-        Matcher m = ipPattern.matcher(url);
-        if (m.find()) {
-            return m.group();
-        }
-        
-        return "";
-    }
-    
     static String defaultIfNull(String value, String defaultValue) {
         return null == value ? defaultValue : value;
     }
@@ -269,10 +256,10 @@ public class ExternalDataSourceServiceImpl implements DataSourceService {
                 } catch (DataAccessException e) {
                     if (i == masterIndex) {
                         FATAL_LOG.error("[db-error] master db {} down.",
-                                getIpFromUrl(dataSourceList.get(i).getJdbcUrl()));
+                                IPUtil.getIPFromString(dataSourceList.get(i).getJdbcUrl()));
                     } else {
                         FATAL_LOG.error("[db-error] slave db {} down.",
-                                getIpFromUrl(dataSourceList.get(i).getJdbcUrl()));
+                                IPUtil.getIPFromString(dataSourceList.get(i).getJdbcUrl()));
                     }
                     isHealthList.set(i, Boolean.FALSE);
                     

config/src/main/java/com/alibaba/nacos/config/server/utils/SystemConfig.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.config.server.utils;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -40,7 +41,7 @@ public class SystemConfig {
         if (StringUtils.isNotEmpty(address)) {
             return address;
         } else {
-            address = "127.0.0.1";
+            address = IPUtil.localHostIP();
         }
         try {
             Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();

core/src/main/java/com/alibaba/nacos/core/cluster/MemberUtils.java

@@ -17,6 +17,7 @@
 package com.alibaba.nacos.core.cluster;
 
 import com.alibaba.nacos.common.utils.ExceptionUtil;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.core.utils.Loggers;
 import com.alibaba.nacos.sys.utils.ApplicationUtils;
 import org.apache.commons.lang3.StringUtils;
@@ -41,8 +42,6 @@ import java.util.stream.Collectors;
  */
 public class MemberUtils {
     
-    private static final String SEMICOLON = ":";
-    
     private static final String TARGET_MEMBER_CONNECT_REFUSE_ERRMSG = "Connection refused";
     
     private static ServerMemberManager manager;
@@ -79,8 +78,8 @@ public class MemberUtils {
         
         String address = member;
         int port = defaultPort;
-        if (address.contains(SEMICOLON)) {
+        String[] info = IPUtil.splitIPPortStr(address);
-            String[] info = address.split(SEMICOLON);
+        if (info.length > 1) {
             address = info[0];
             port = Integer.parseInt(info[1]);
         }

core/src/main/java/com/alibaba/nacos/core/distributed/raft/JRaftServer.java

@@ -19,6 +19,7 @@ package com.alibaba.nacos.core.distributed.raft;
 import com.alibaba.nacos.common.JustForTest;
 import com.alibaba.nacos.common.model.RestResult;
 import com.alibaba.nacos.common.utils.ConvertUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.LoggerUtils;
 import com.alibaba.nacos.common.utils.ThreadUtils;
 import com.alibaba.nacos.consistency.LogProcessor;
@@ -163,7 +164,7 @@ public class JRaftServer {
         RaftExecutor.init(config);
         
         final String self = config.getSelfMember();
-        String[] info = self.split(":");
+        String[] info = IPUtil.splitIPPortStr(self);
         selfIp = info[0];
         selfPort = Integer.parseInt(info[1]);
         localPeerId = PeerId.parsePeer(self);

core/src/main/java/com/alibaba/nacos/core/utils/WebUtils.java

@@ -113,6 +113,13 @@ public class WebUtils {
         try {
             value = HttpUtils.decode(new String(value.getBytes(StandardCharsets.UTF_8), encoding), encoding);
         } catch (UnsupportedEncodingException ignore) {
+        } catch (Exception ex) {
+            // If the value contains a special character without encoding (such as "[IPv6]"),
+            // a URLDecoder exception is thrown, which is ignored and the original value is returned
+            final String seq = "URLDecoder";
+            if (!StringUtils.contains(ex.toString(), seq)) {
+                throw ex;
+            }
         }
         return value.trim();
     }

distribution/conf/1.4.0-ipv6_support-update.sql

@@ -0,0 +1,27 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ALTER TABLE `config_info_tag`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;
+
+ALTER TABLE `his_config_info`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL AFTER `src_user`;
+
+ALTER TABLE `config_info`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;
+
+ALTER TABLE `config_info_beta`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;

distribution/conf/nacos-mysql.sql

@@ -27,7 +27,7 @@ CREATE TABLE `config_info` (
   `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
   `src_user` text COMMENT 'source user',
-  `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
+  `src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',
   `app_name` varchar(128) DEFAULT NULL,
   `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
   `c_desc` varchar(256) DEFAULT NULL,
@@ -72,7 +72,7 @@ CREATE TABLE `config_info_beta` (
   `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
   `src_user` text COMMENT 'source user',
-  `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
+  `src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',
   `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
   PRIMARY KEY (`id`),
   UNIQUE KEY `uk_configinfobeta_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
@@ -94,7 +94,7 @@ CREATE TABLE `config_info_tag` (
   `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
   `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
   `src_user` text COMMENT 'source user',
-  `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
+  `src_ip` varchar(50) DEFAULT NULL COMMENT 'source ip',
   PRIMARY KEY (`id`),
   UNIQUE KEY `uk_configinfotag_datagrouptenanttag` (`data_id`,`group_id`,`tenant_id`,`tag_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info_tag';
@@ -150,7 +150,7 @@ CREATE TABLE `his_config_info` (
   `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `src_user` text,
-  `src_ip` varchar(20) DEFAULT NULL,
+  `src_ip` varchar(50) DEFAULT NULL,
   `op_type` char(10) DEFAULT NULL,
   `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
   PRIMARY KEY (`nid`),

distribution/conf/schema.sql

@@ -27,7 +27,7 @@ CREATE TABLE config_info (
   gmt_create timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   gmt_modified timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   src_user varchar(128) DEFAULT NULL,
-  src_ip varchar(20) DEFAULT NULL,
+  src_ip varchar(50) DEFAULT NULL,
   c_desc varchar(256) DEFAULT NULL,
   c_use varchar(64) DEFAULT NULL,
   effect varchar(64) DEFAULT NULL,
@@ -52,7 +52,7 @@ CREATE TABLE his_config_info (
   gmt_create timestamp NOT NULL DEFAULT '2010-05-05 00:00:00.000',
   gmt_modified timestamp NOT NULL DEFAULT '2010-05-05 00:00:00.000',
   src_user varchar(128),
-  src_ip varchar(20) DEFAULT NULL,
+  src_ip varchar(50) DEFAULT NULL,
   op_type char(10) DEFAULT NULL,
   constraint hisconfiginfo_nid_key PRIMARY KEY (nid));
 
@@ -73,7 +73,7 @@ CREATE TABLE config_info_beta (
   gmt_create timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   gmt_modified timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   src_user varchar(128),
-  src_ip varchar(20) DEFAULT NULL,
+  src_ip varchar(50) DEFAULT NULL,
   constraint configinfobeta_id_key PRIMARY KEY (id),
   constraint uk_configinfobeta_datagrouptenant UNIQUE (data_id,group_id,tenant_id));
 
@@ -89,7 +89,7 @@ CREATE TABLE config_info_tag (
   gmt_create timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   gmt_modified timestamp NOT NULL DEFAULT '2010-05-05 00:00:00',
   src_user varchar(128),
-  src_ip varchar(20) DEFAULT NULL,
+  src_ip varchar(50) DEFAULT NULL,
   constraint configinfotag_id_key PRIMARY KEY (id),
   constraint uk_configinfotag_datagrouptenanttag UNIQUE (data_id,group_id,tenant_id,tag_id));
 
@@ -210,3 +210,19 @@ CREATE TABLE permissions (
 INSERT INTO users (username, password, enabled) VALUES ('nacos', '$2a$10$EuWPZHzz32dJN7jexM34MOeYirDdFAZm2kuWj7VEOJhhZkDrxfvUu', TRUE);
 
 INSERT INTO roles (username, role) VALUES ('nacos', 'ROLE_ADMIN');
+
+
+/******************************************/
+/*   ipv6 support   */
+/******************************************/
+ALTER TABLE `config_info_tag`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;
+
+ALTER TABLE `his_config_info`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL AFTER `src_user`;
+
+ALTER TABLE `config_info`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;
+
+ALTER TABLE `config_info_beta`
+MODIFY COLUMN `src_ip` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT 'source ip' AFTER `src_user`;

naming/src/main/java/com/alibaba/nacos/naming/cluster/ServerListManager.java

@@ -17,6 +17,7 @@
 package com.alibaba.nacos.naming.cluster;
 
 import com.alibaba.nacos.common.notify.NotifyCenter;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.JacksonUtils;
 import com.alibaba.nacos.core.cluster.Member;
 import com.alibaba.nacos.core.cluster.MembersChangeEvent;
@@ -125,9 +126,10 @@ public class ServerListManager extends MemberChangeListener {
                 continue;
             }
     
+            String[] info = IPUtil.splitIPPortStr(params[1]);
             Member server = Optional.ofNullable(memberManager.find(params[1]))
-                    .orElse(Member.builder().ip(params[1].split(UtilsAndCommons.IP_PORT_SPLITER)[0]).state(NodeState.UP)
+                    .orElse(Member.builder().ip(info[0]).state(NodeState.UP)
-                            .port(Integer.parseInt(params[1].split(UtilsAndCommons.IP_PORT_SPLITER)[1])).build());
+                            .port(Integer.parseInt(info[1])).build());
             
             server.setExtendVal(MemberMetaDataConstants.SITE_KEY, params[0]);
             server.setExtendVal(MemberMetaDataConstants.WEIGHT, params.length == 4 ? Integer.parseInt(params[3]) : 1);
@@ -212,7 +214,7 @@ public class ServerListManager extends MemberChangeListener {
                 }
                 
                 if (allServers.size() > 0 && !ApplicationUtils.getLocalAddress()
-                        .contains(UtilsAndCommons.LOCAL_HOST_IP)) {
+                        .contains(IPUtil.localHostIP())) {
                     for (Member server : allServers) {
                         if (Objects.equals(server.getAddress(), ApplicationUtils.getLocalAddress())) {
                             continue;

naming/src/main/java/com/alibaba/nacos/naming/consistency/persistent/raft/RaftCore.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.naming.consistency.persistent.raft;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.api.exception.NacosException;
 import com.alibaba.nacos.api.exception.runtime.NacosRuntimeException;
 import com.alibaba.nacos.common.http.Callback;
@@ -1003,8 +1004,8 @@ public class RaftCore implements Closeable {
      * @return api url
      */
     public static String buildUrl(String ip, String api) {
-        if (!ip.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (!IPUtil.containsPort(ip)) {
-            ip = ip + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+            ip = ip + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
         }
         return "http://" + ip + ApplicationUtils.getContextPath() + api;
     }

naming/src/main/java/com/alibaba/nacos/naming/consistency/persistent/raft/RaftProxy.java

@@ -16,10 +16,10 @@
 
 package com.alibaba.nacos.naming.consistency.persistent.raft;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.sys.utils.ApplicationUtils;
 import com.alibaba.nacos.common.model.RestResult;
 import com.alibaba.nacos.naming.misc.HttpClient;
-import com.alibaba.nacos.naming.misc.UtilsAndCommons;
 import org.springframework.http.HttpMethod;
 import org.springframework.stereotype.Component;
 
@@ -45,8 +45,8 @@ public class RaftProxy {
      */
     public void proxyGet(String server, String api, Map<String, String> params) throws Exception {
         // do proxy
-        if (!server.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (!IPUtil.containsPort(server)) {
-            server = server + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+            server = server + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
         }
         String url = "http://" + server + ApplicationUtils.getContextPath() + api;
         
@@ -67,8 +67,8 @@ public class RaftProxy {
      */
     public void proxy(String server, String api, Map<String, String> params, HttpMethod method) throws Exception {
         // do proxy
-        if (!server.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (!IPUtil.containsPort(server)) {
-            server = server + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+            server = server + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
         }
         String url = "http://" + server + ApplicationUtils.getContextPath() + api;
         RestResult<String> result;
@@ -103,8 +103,8 @@ public class RaftProxy {
     public void proxyPostLarge(String server, String api, String content, Map<String, String> headers)
             throws Exception {
         // do proxy
-        if (!server.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (!IPUtil.containsPort(server)) {
-            server = server + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+            server = server + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
         }
         String url = "http://" + server + ApplicationUtils.getContextPath() + api;
         

naming/src/main/java/com/alibaba/nacos/naming/core/Instance.java

@@ -18,6 +18,7 @@ package com.alibaba.nacos.naming.core;
 
 import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.api.exception.NacosException;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.JacksonUtils;
 import com.alibaba.nacos.naming.healthcheck.HealthCheckStatus;
 import com.alibaba.nacos.naming.misc.Loggers;
@@ -60,9 +61,6 @@ public class Instance extends com.alibaba.nacos.api.naming.pojo.Instance impleme
     
     private String app;
     
-    private static final Pattern IP_PATTERN = Pattern
-            .compile("(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}):?(\\d{1,5})?");
-    
     private static final Pattern ONLY_DIGIT_AND_DOT = Pattern.compile("(\\d|\\.)+");
     
     private static final String SPLITER = "_";
@@ -119,19 +117,19 @@ public class Instance extends com.alibaba.nacos.api.naming.pojo.Instance impleme
         }
         
         String provider = ipAddressAttributes[0];
-        Matcher matcher = IP_PATTERN.matcher(provider);
+        String[] providerAddr;
-        if (!matcher.matches()) {
+        try {
+            providerAddr = IPUtil.splitIPPortStr(provider);
+        } catch (Exception ex) {
             return null;
         }
         
-        int expectedGroupCount = 2;
-        
         int port = 0;
-        if (NumberUtils.isNumber(matcher.group(expectedGroupCount))) {
+        if (providerAddr.length == IPUtil.SPLIT_IP_PORT_RESULT_LENGTH && NumberUtils.isNumber(providerAddr[1])) {
-            port = Integer.parseInt(matcher.group(expectedGroupCount));
+            port = Integer.parseInt(providerAddr[1]);
         }
         
-        Instance instance = new Instance(matcher.group(1), port);
+        Instance instance = new Instance(providerAddr[0], port);
         
         // 7 possible formats of config:
         // ip:port
@@ -360,8 +358,7 @@ public class Instance extends com.alibaba.nacos.api.naming.pojo.Instance impleme
      */
     public void validate() throws NacosException {
         if (onlyContainsDigitAndDot()) {
-            Matcher matcher = IP_PATTERN.matcher(getIp() + ":" + getPort());
+            if (!IPUtil.containsPort(getIp() + IPUtil.IP_PORT_SPLITER + getPort())) {
-            if (!matcher.matches()) {
                 throw new NacosException(NacosException.INVALID_PARAM,
                         "instance format invalid: Your IP address is spelled incorrectly");
             }

naming/src/main/java/com/alibaba/nacos/naming/core/ServiceManager.java

@@ -19,6 +19,7 @@ package com.alibaba.nacos.naming.core;
 import com.alibaba.nacos.api.common.Constants;
 import com.alibaba.nacos.api.exception.NacosException;
 import com.alibaba.nacos.api.naming.utils.NamingUtils;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.utils.JacksonUtils;
 import com.alibaba.nacos.core.cluster.Member;
 import com.alibaba.nacos.core.cluster.ServerMemberManager;
@@ -956,8 +957,8 @@ public class ServiceManager implements RecordListener<Service> {
                 contained = false;
                 List<Instance> instances = service.allIPs();
                 for (Instance instance : instances) {
-                    if (containedInstance.contains(":")) {
+                    if (IPUtil.containsPort(containedInstance)) {
-                        if (StringUtils.equals(instance.getIp() + ":" + instance.getPort(), containedInstance)) {
+                        if (StringUtils.equals(instance.getIp() +  IPUtil.IP_PORT_SPLITER + instance.getPort(), containedInstance)) {
                             contained = true;
                             break;
                         }

naming/src/main/java/com/alibaba/nacos/naming/healthcheck/ClientBeatCheckTask.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.naming.healthcheck;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.http.Callback;
 import com.alibaba.nacos.common.model.RestResult;
 import com.alibaba.nacos.common.utils.JacksonUtils;
@@ -135,7 +136,7 @@ public class ClientBeatCheckTask implements Runnable {
                     .appendParam("ephemeral", "true").appendParam("clusterName", instance.getClusterName())
                     .appendParam("serviceName", service.getName()).appendParam("namespaceId", service.getNamespaceId());
             
-            String url = "http://127.0.0.1:" + ApplicationUtils.getPort() + ApplicationUtils.getContextPath()
+            String url = "http://" + IPUtil.localHostIP() + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort() + ApplicationUtils.getContextPath()
                     + UtilsAndCommons.NACOS_NAMING_CONTEXT + "/instance?" + request.toUrl();
             
             // delete instance asynchronously:

naming/src/main/java/com/alibaba/nacos/naming/misc/NamingProxy.java

@@ -17,6 +17,7 @@
 package com.alibaba.nacos.naming.misc;
 
 import com.alibaba.nacos.common.constant.HttpHeaderConsts;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.http.Callback;
 import com.alibaba.nacos.common.model.RestResult;
 import com.alibaba.nacos.common.utils.JacksonUtils;
@@ -202,8 +203,8 @@ public class NamingProxy {
             
             RestResult<String> result;
             
-            if (!curServer.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+            if (!IPUtil.containsPort(curServer)) {
-                curServer = curServer + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+                curServer = curServer + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
             }
             
             result = HttpClient.httpGet("http://" + curServer + api, headers, params);
@@ -244,8 +245,8 @@ public class NamingProxy {
             
             RestResult<String> result;
             
-            if (!curServer.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+            if (!IPUtil.containsPort(curServer)) {
-                curServer = curServer + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+                curServer = curServer + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
             }
             
             if (isPost) {
@@ -294,8 +295,8 @@ public class NamingProxy {
             
             RestResult<String> result;
             
-            if (!curServer.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+            if (!IPUtil.containsPort(curServer)) {
-                curServer = curServer + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+                curServer = curServer + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
             }
             
             if (isPost) {

naming/src/main/java/com/alibaba/nacos/naming/misc/NetUtils.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.naming.misc;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.sys.utils.ApplicationUtils;
 import com.alibaba.nacos.sys.utils.InetUtils;
 
@@ -32,23 +33,7 @@ public class NetUtils {
      * @return local server address
      */
     public static String localServer() {
-        return InetUtils.getSelfIP() + UtilsAndCommons.IP_PORT_SPLITER + ApplicationUtils.getPort();
+        return InetUtils.getSelfIP() + IPUtil.IP_PORT_SPLITER + ApplicationUtils.getPort();
-    }
-    
-    /**
-     * Transfer int to IP.
-     *
-     * @param ip ip int
-     * @return IP string
-     */
-    public static String num2ip(int ip) {
-        int[] b = new int[4];
-        
-        b[0] = (ip >> 24) & 0xff;
-        b[1] = (ip >> 16) & 0xff;
-        b[2] = (ip >> 8) & 0xff;
-        b[3] = ip & 0xff;
-        return b[0] + "." + b[1] + "." + b[2] + "." + b[3];
     }
     
 }

naming/src/main/java/com/alibaba/nacos/naming/misc/ServerStatusSynchronizer.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.naming.misc;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.sys.utils.ApplicationUtils;
 import com.alibaba.nacos.common.http.Callback;
 import com.alibaba.nacos.common.model.RestResult;
@@ -45,7 +46,7 @@ public class ServerStatusSynchronizer implements Synchronizer {
         String url = "http://" + serverIP + ":" + ApplicationUtils.getPort() + ApplicationUtils.getContextPath()
                 + UtilsAndCommons.NACOS_NAMING_CONTEXT + "/operator/server/status";
         
-        if (serverIP.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (IPUtil.containsPort(serverIP)) {
             url = "http://" + serverIP + ApplicationUtils.getContextPath() + UtilsAndCommons.NACOS_NAMING_CONTEXT
                     + "/operator/server/status";
         }

naming/src/main/java/com/alibaba/nacos/naming/misc/ServiceStatusSynchronizer.java

@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.naming.misc;
 
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.common.http.Callback;
 import com.alibaba.nacos.common.model.RestResult;
 import com.alibaba.nacos.common.utils.JacksonUtils;
@@ -46,7 +47,7 @@ public class ServiceStatusSynchronizer implements Synchronizer {
         String url = "http://" + serverIP + ":" + ApplicationUtils.getPort() + ApplicationUtils.getContextPath()
                 + UtilsAndCommons.NACOS_NAMING_CONTEXT + "/service/status";
         
-        if (serverIP.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
+        if (IPUtil.containsPort(serverIP)) {
             url = "http://" + serverIP + ApplicationUtils.getContextPath() + UtilsAndCommons.NACOS_NAMING_CONTEXT
                     + "/service/status";
         }

naming/src/main/java/com/alibaba/nacos/naming/misc/UtilsAndCommons.java

@@ -95,10 +95,6 @@ public class UtilsAndCommons {
     
     public static final String CACHE_KEY_SPLITER = "@@@@";
     
-    public static final String LOCAL_HOST_IP = "127.0.0.1";
-    
-    public static final String IP_PORT_SPLITER = ":";
-    
     public static final int MAX_PUBLISH_WAIT_TIME_MILLIS = 5000;
     
     public static final String VERSION_STRING_SYNTAX = "[0-9]+\\.[0-9]+\\.[0-9]+";

sys/src/main/java/com/alibaba/nacos/sys/utils/InetUtils.java

@@ -18,6 +18,7 @@ package com.alibaba.nacos.sys.utils;
 
 import com.alibaba.nacos.common.notify.NotifyCenter;
 import com.alibaba.nacos.common.notify.SlowEvent;
+import com.alibaba.nacos.common.utils.IPUtil;
 import com.alibaba.nacos.sys.env.Constants;
 import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
@@ -25,6 +26,7 @@ import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.net.Inet4Address;
+import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.NetworkInterface;
@@ -33,8 +35,6 @@ import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.List;
 import java.util.Objects;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 import static com.alibaba.nacos.sys.env.Constants.IP_ADDRESS;
 import static com.alibaba.nacos.sys.env.Constants.NACOS_SERVER_IP;
@@ -51,12 +51,6 @@ public class InetUtils {
     
     private static final Logger LOG = LoggerFactory.getLogger(InetUtils.class);
     
-    private static final String NUM = "(25[0-5]|2[0-4]\\d|[0-1]\\d{2}|[1-9]?\\d)";
-    
-    private static final String IP_REGEX = "^" + NUM + "\\." + NUM + "\\." + NUM + "\\." + NUM + "$";
-    
-    private static final Pattern IP_PATTERN = Pattern.compile(IP_REGEX);
-    
     private static String selfIP;
     
     private static boolean useOnlySiteLocalInterface = false;
@@ -87,11 +81,11 @@ public class InetUtils {
                 if (StringUtils.isBlank(nacosIP)) {
                     nacosIP = ApplicationUtils.getProperty(IP_ADDRESS);
                 }
-                
+                if (!StringUtils.isBlank(nacosIP)) {
-                boolean illegalIP = !StringUtils.isBlank(nacosIP) && !(isIP(nacosIP) || isDomain(nacosIP));
+                    if (!(IPUtil.isIP(nacosIP) || isDomain(nacosIP))) {
-                if (illegalIP) {
                         throw new RuntimeException("nacos address " + nacosIP + " is not ip");
                     }
+                }
                 String tmpSelfIP = nacosIP;
                 if (StringUtils.isBlank(tmpSelfIP)) {
                     preferHostnameOverIP = Boolean.getBoolean(SYSTEM_PREFER_HOSTNAME_OVER_IP);
@@ -117,7 +111,14 @@ public class InetUtils {
                         tmpSelfIP = Objects.requireNonNull(findFirstNonLoopbackAddress()).getHostAddress();
                     }
                 }
-                
+                if (IPUtil.PREFER_IPV6_ADDRESSES && !tmpSelfIP.startsWith(IPUtil.IPV6_START_MARK) && !tmpSelfIP
+                        .endsWith(IPUtil.IPV6_END_MARK)) {
+                    tmpSelfIP = IPUtil.IPV6_START_MARK + tmpSelfIP + IPUtil.IPV6_END_MARK;
+                    if (StringUtils.contains(tmpSelfIP, IPUtil.PERCENT_SIGN_IN_IPV6)) {
+                        tmpSelfIP = tmpSelfIP.substring(0, tmpSelfIP.indexOf(IPUtil.PERCENT_SIGN_IN_IPV6))
+                                + IPUtil.IPV6_END_MARK;
+                    }
+                }
                 if (!Objects.equals(selfIP, tmpSelfIP) && Objects.nonNull(selfIP)) {
                     IPChangeEvent event = new IPChangeEvent();
                     event.setOldIP(selfIP);
@@ -159,8 +160,9 @@ public class InetUtils {
                     if (!ignoreInterface(ifc.getDisplayName())) {
                         for (Enumeration<InetAddress> addrs = ifc.getInetAddresses(); addrs.hasMoreElements(); ) {
                             InetAddress address = addrs.nextElement();
-                            if (address instanceof Inet4Address && !address.isLoopbackAddress() && isPreferredAddress(
+                            boolean isLegalIpVersion = IPUtil.PREFER_IPV6_ADDRESSES ? address instanceof Inet6Address
-                                    address)) {
+                                    : address instanceof Inet4Address;
+                            if (isLegalIpVersion && !address.isLoopbackAddress() && isPreferredAddress(address)) {
                                 LOG.debug("Found non-loopback interface: " + ifc.getDisplayName());
                                 result = address;
                             }
@@ -216,11 +218,6 @@ public class InetUtils {
         return false;
     }
     
-    public static boolean isIP(String str) {
-        Matcher matcher = IP_PATTERN.matcher(str);
-        return matcher.matches();
-    }
-    
     /**
      * juege str is right domain.
      *