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https://issues.apache.org/jira/browse/ZOOKEEPER-4182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291519#comment-17291519
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Mate Szalay-Beko commented on ZOOKEEPER-4182:
---------------------------------------------

hello [~horizonzy]!

I haven't realized that ZOOKEEPER-4221 duplicates this older Jira, and 
ZOOKEEPER-4221 just got merged.
I'm sorry if you would feel that we wasted the energy you put to this issue. I 
hope this doesn't prevent you from further contributions...
Thanks for your time again!!

>  Enhance message when packet's length over limit.
> -------------------------------------------------
>
>                 Key: ZOOKEEPER-4182
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4182
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: java client
>    Affects Versions: 3.6.2
>            Reporter: 赵延
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> {code:java}
> void readLength() throws IOException {
>     int len = incomingBuffer.getInt();
>     if (len < 0 || len >= packetLen) {
>         throw new IOException("Packet len " + len + " is out of range!");
>     }
>     incomingBuffer = ByteBuffer.allocate(len);
> }
> {code}
>  
> The message can append `packetLen` info.



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