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https://issues.apache.org/jira/browse/HTTPCORE-718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17576407#comment-17576407
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Sajinie Kavindya commented on HTTPCORE-718:
-------------------------------------------

[~olegk],

A recent change has been done in the _updateEventMask_ method. Part of this 
change [1] might be the reason behind the _*java.net.SocketTimeoutException*_ I 
receive in this scenario. I could get it to work as 
expected(ConnectionClosedException) with this fix [2]. Could you please review 
this and provide me feedback, so I can proceed with this change?

[1] - 
[https://github.com/apache/httpcomponents-core/commit/211c21f86f27c8cc786a621fef2e1fdf3dc6b126#diff-b31898263b1708b34dde2568e52e870fa623a6d4be99ce247a7f6dc61f03ed7fR395]
[2] - [https://github.com/apache/httpcomponents-core/pull/359]

Thanks,
Sajinie

> Getting org.apache.http.ConnectionClosedException after httpcore-nio version 
> upgrade
> ------------------------------------------------------------------------------------
>
>                 Key: HTTPCORE-718
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-718
>             Project: HttpComponents HttpCore
>          Issue Type: Bug
>          Components: HttpCore NIO
>    Affects Versions: 4.4.15
>         Environment: Java version: 11.0.15.1
> OS: macOS Monterey (Version 12.12.1) 
>            Reporter: Sajinie Kavindya
>            Priority: Major
>         Attachments: HttpNIOTestClient-1.zip, HttpNIOTestClient.zip, 
> HttpNIOTestClient_new.zip
>
>
> We recently migrated to httpcore-nio 4.4.15 and we have been encountering 
> some issues when connecting to an HTTPS Backend that sends chunked responses. 
> The backend behaves in such a manner that when it sends the response, it 
> immediately closes the connection after completion. 
> We have attached a reproducer to this ticket and the behavior is as below.
> When httpcore-nio 4.4.15 is used, the client gets the error:
> {code:java}
> org.apache.http.ConnectionClosedException: Connection closed 
> unexpectedly{code}
> But, when httpcore-nio 4.4.5 is used, the client receives the complete 
> response, which was sent from the backend.
> We further checked on the following versions and the observations are as 
> below. 
>  * httpcore-nio 4.4.10 - receives the complete response
>  * httpcore-nio 4.4.11 - receives org.apache.http.ConnectionClosedException
> In order to replicate the issue, we did a few changes to the 
> consumeContent(final ContentDecoder decoder) method inside the 
> SimpleInputBuffer class. You may find the changes in the attached source code.
> In order to test the behavior, please run the Main class: 
> “{*}TestChunkedBackend{*}”.
> Tested environment:
>  * Java version: 11.0.15.1
>  * OS: macOS Monterey (Version 12.12.1) 
> A similar issue can be found here 
> [https://issues.apache.org/jira/browse/HTTPCORE-706|http://example.com]
> Thanks & Regards,
> Sajinie
>  



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