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https://issues.apache.org/jira/browse/CASSANDRA-11464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218744#comment-15218744
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Tyler Hobbs commented on CASSANDRA-11464:
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For some reason our [unit test for
this|https://github.com/apache/cassandra/blob/43ff27fc708c5bf53b5f3d575e50e76b25ac0811/test/unit/org/apache/cassandra/transport/ProtocolErrorTest.java#L40]
isn't sufficient. As part of this ticket I'll add a similar dtest to improve
the coverage.
> C* doesn't respond to OPTIONS request containing low protocol number
> --------------------------------------------------------------------
>
> Key: CASSANDRA-11464
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11464
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Sandeep Tamhankar
> Assignee: Tyler Hobbs
>
> Observed in Ruby and Python drivers: if you send an OPTIONS message to C* 3.4
> (though I believe this goes back to 3.0) with a protocol version of 1, C*
> doesn't send a response to the client. If you specify a high protocol version
> (e.g. 5), C* does correctly respond with a protocol error.
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