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https://issues.apache.org/jira/browse/HTTPCORE-755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17746780#comment-17746780
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Oleg Kalnichevski commented on HTTPCORE-755:
--------------------------------------------
[~arunans23] I seriously doubt anyone is going to look into this issue.
HttpCore 4.x NIO is likely to be officially declared EOL this Autumn. Please
consider upgrading to HttpCore 5.2
Oleg
> Connection gets closed prematurely before Decoder gets completed
> ----------------------------------------------------------------
>
> Key: HTTPCORE-755
> URL: https://issues.apache.org/jira/browse/HTTPCORE-755
> Project: HttpComponents HttpCore
> Issue Type: Bug
> Components: HttpCore NIO
> Affects Versions: 4.4.16
> Reporter: Arunan Sugunakumar
> Priority: Major
> Attachments: Jmeter_script_1.jmx, NHttpReverseProxy.zip,
> chunk-backend.zip
>
>
> Hi,
> In httpcore-nio 4.4.16, sometimes the closed event (in
> NHttpClientEventHandler) gets triggered before the ContentDecoder gets
> completed. This is observed when the backend sends Chunk decoded messages and
> immediately closes the connection. Also to reproduce the issue, we had to do
> a load test with 20 threads and host the server and client on two different
> virtual machines.
> When we added debug logs, we found that the SSLIOsession goes into CLOSING
> state[1] while there are remaining data available in the inPlain buffer. As a
> result, the closeOutbound is called on the SSLEngine[2]. This sometimes makes
> the HandshakeStatus into NEED_UNWRAP which makes the session go into CLOSED
> state[3]. As a result, the session gets closed before consuming the data in
> the inPlain buffer.
> I reproduced this scenario with the NHttpReverseProxy sample with the
> attached backend and invoked the ReverseProxy with a Jmeter script. I placed
> the backend jar in another server and the Proxy sample in another and invoked
> the Jmeter client from the local machine.
>
> The issue does not occur in httpcore-nio 4.4.9 but only from 4.4.10. This is
> occurring because we are making the session go into CLOSING state for
> endOfStream with this commit[4].
> [1] -
> [https://github.com/apache/httpcomponents-core/blob/4.4.x/httpcore-nio/src/main/java/org/apache/http/nio/reactor/ssl/SSLIOSession.java#L387]
> [2] -
> [https://github.com/apache/httpcomponents-core/blob/4.4.x/httpcore-nio/src/main/java/org/apache/http/nio/reactor/ssl/SSLIOSession.java#L390]
> [3] -
> [https://github.com/apache/httpcomponents-core/blob/4.4.x/httpcore-nio/src/main/java/org/apache/http/nio/reactor/ssl/SSLIOSession.java#L401]
> [4] -
> [https://github.com/apache/httpcomponents-core/commit/08d9c3c30d57def4963d0807bce5f3023f5fcb35]
>
> Regards,
> Arunan
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