Mahadev konar updated ZOOKEEPER-547:

    Attachment: ZOOKEEPER-547.patch

a simple fix. We are already guarded on our client and followerhandler ports. 
This one gurads against the quurom ports. I did write a test case, but havent 
been able to get it working since we unfortunately do not use FLE in most of 
our testing. I will try and upload a test case within a day!

> Sanity check in QuorumCnxn Manager and quorum communication port.
> -----------------------------------------------------------------
>                 Key: ZOOKEEPER-547
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-547
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: leaderElection, server
>    Affects Versions: 3.2.0, 3.2.1
>            Reporter: Mahadev konar
>            Assignee: Mahadev konar
>             Fix For: 3.3.0
>         Attachments: ZOOKEEPER-547.patch
> We need to put some sanity checks in QuorumCnxnManager and the other quorum 
> port for rogue clients. Sometimes a clients might get misconfigured and they 
> might send random characters on such ports. We need to make sure that such 
> rogue clients do not bring down the clients and need to put in some sanity 
> checks with respect to packet lengths and deserialization.

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