Session 0x0 for server 127.0.0.1/<unresolved>:2181

[hadesvip]

Environment

• Dubbo version: 3.0.2.1
• Operating System version: win10
• Java version: openjdk 14

Steps to reproduce this issue

1. 在openjdk14 版本上运行dubbo时候启动报错，提示如下

2. 调试源码发现，openjdk14 修改了InetSocketAddress的toString方法，修改源码如下
   

3. 调用InetSocketAddress.toString()获取IP地址的时候导致返回了127.0.0.1/<unresolved>:2181，获取IP地址触发了UnknownHostException运行时异常返回了默认的值
   

4. 后续对ip地址进行校验的时候，SocketAddress中的addr并没有设置值，直接触发了UnresolvedAddressException异常
   

Pls. provide [GitHub address] to reproduce this issue.
https://github.com/hadesvip/dubbo-samples/blob/master/dubbo-samples-echo/src/main/java/org/apache/dubbo/samples/echo/EchoProvider.java

[AlbumenJ]

Try upgrade zk version.

[CrazyHZM]

No feedback for a long time, please close the issue temporarily. If there is still a problem, you can reopen it.