Jerry Chung created ZOOKEEPER-4861:
--------------------------------------
Summary: TLS compatibility issue
Key: ZOOKEEPER-4861
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4861
Project: ZooKeeper
Issue Type: Bug
Components: server
Affects Versions: 3.9.2, 3.9.1, 3.9.0
Reporter: Jerry Chung
TLS is not established after the following warning message:
{{2024-09-06 20:55:34,307 [myid:] - WARN
[epollEventLoopGroup-4-1:o.a.z.s.NettyServerCnxnFactory$CnxnChannelHandler@302]
- Exception }}
{{caught }}
{{{}io.netty.handler.codec.DecoderException:
javax.net.ssl.SSLHandshakeException: The client supported protocol versions
[TLSv1.2] are n{}}}{{{}ot accepted by server preferences [TLS13] {}}}
{{ at
io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:499)
}}
{{ at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
}}
{{ at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
}}
{{ at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
}}
{{ at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
}}
{{ at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
}}
{{ at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
}}
{{ at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)}}
During the startup, zookeeper logs:
{{2024-09-06 20:54:49,778 [myid:] - INFO [main:o.a.z.c.X509Util@110] - Default
TLS protocol is TLSv1.3, supported TLS protocols are [ }}
{{TLSv1.3, TLSv1.2, TLSv1.1, TLSv1, SSLv3, SSLv2Hello] }}
This was noticed on the following environment:
* Zookeeper Client (3.9.0) - Zookeeper Server (3.9.1): When Zookeeper server
is running with Java 21. Client java version does not matter. This works with
Java 17.
* Zookeeper Client (3.9.1) - Zookeeper Server (3.9.2): It happens for Java 17
and Java 21
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