From 2c8a525a16d5b71dc00f938e710486785f0ba7c8 Mon Sep 17 00:00:00 2001
From: Ifdevil <384867771@qq.com>
Date: Sun, 8 Oct 2023 14:23:35 +0800
Subject: [PATCH] fix ipv4_pattern

---
 .../java/io/seata/common/util/NetAddressValidatorUtil.java     | 3 ++-
 .../java/io/seata/common/util/NetAddressValidatorUtilTest.java | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/common/src/main/java/io/seata/common/util/NetAddressValidatorUtil.java b/common/src/main/java/io/seata/common/util/NetAddressValidatorUtil.java
index 9884a3afb77..00f8b53d90c 100644
--- a/common/src/main/java/io/seata/common/util/NetAddressValidatorUtil.java
+++ b/common/src/main/java/io/seata/common/util/NetAddressValidatorUtil.java
@@ -38,7 +38,8 @@ public class NetAddressValidatorUtil {
 
     private static final int FIVE = 5;
 
-    private static final Pattern IPV4_PATTERN = Pattern.compile("\\d{1,3}(\\.\\d{1,3}){3,5}$");
+    private static final Pattern IPV4_PATTERN = Pattern
+            .compile("^" + "(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)" + "(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}" + "$");
 
     private static final Pattern IPV6_STD_PATTERN = Pattern
             .compile("^" + "(?:[0-9a-fA-F]{1,4}:){7}" + "[0-9a-fA-F]{1,4}" + "$");
diff --git a/common/src/test/java/io/seata/common/util/NetAddressValidatorUtilTest.java b/common/src/test/java/io/seata/common/util/NetAddressValidatorUtilTest.java
index 5e50ec8216c..b274855cf1f 100644
--- a/common/src/test/java/io/seata/common/util/NetAddressValidatorUtilTest.java
+++ b/common/src/test/java/io/seata/common/util/NetAddressValidatorUtilTest.java
@@ -50,5 +50,7 @@ public void isIPv6IPv4MappedAddress() {
     @Test
     public void isIPv4Address() {
         assertThat(NetAddressValidatorUtil.isIPv4Address("192.168.1.2")).isTrue();
+        assertThat(NetAddressValidatorUtil.isIPv4Address("127.0.0.1")).isTrue();
+        assertThat(NetAddressValidatorUtil.isIPv4Address("999.999.999.999")).isFalse();
     }
 }