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Posted to jira@kafka.apache.org by "Tim Fox (Jira)" <ji...@apache.org> on 2021/02/15 13:53:01 UTC

[jira] [Commented] (KAFKA-3702) SslTransportLayer.close() does not shutdown gracefully

    [ https://issues.apache.org/jira/browse/KAFKA-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17284740#comment-17284740 ] 

Tim Fox commented on KAFKA-3702:
--------------------------------

Just looking at the code and it seems SSLEngine.closeOutbound is called _before_ the connection is flushed. Is this deliberate?

According to the javadoc for closeOutBound:



"Signals that no more outbound application data will be sent on this {{SSLEngine}}."

https://docs.oracle.com/javase/7/docs/api/javax/net/ssl/SSLEngine.html#closeOutbound()

> SslTransportLayer.close() does not shutdown gracefully
> ------------------------------------------------------
>
>                 Key: KAFKA-3702
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3702
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.10.0.0
>            Reporter: Rajini Sivaram
>            Assignee: Rajini Sivaram
>            Priority: Major
>
> The warning "Failed to send SSL Close message" occurs very frequently when SSL connections are closed. Close should write outbound data and shutdown gracefully.



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