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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1838) HttpClient leaves connection in CLOSE_WAIT in a multithreaded environment
Date Fri, 07 Apr 2017 15:23:41 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960959#comment-15960959
] 

Oleg Kalnichevski commented on HTTPCLIENT-1838:
-----------------------------------------------

No, there are no known issues. There is a multitude of reasons why connections can end up
in the CLOSE_WAIT state and unless I am able to reproduce the issue in a controlled environment
and unambiguously trace the cause of the issue to a defect in HttpClient code there is not
much I can do to help you.

Oleg

> HttpClient leaves connection in CLOSE_WAIT in a multithreaded environment
> -------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1838
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1838
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient (classic)
>    Affects Versions: 4.5.3
>         Environment: Centos6.3. Apache HttpClient 4.5.3. 
>            Reporter: kumaran
>             Fix For: 4.5.4
>
>         Attachments: CvHttpClientImpl.txt
>
>
> We use HttpClient for all our internal http communications and below the code snippet,
> val client: CloseableHttpClient = HttpClients.custom()
> 			.setConnectionManager(clientConnectionManager)
> 			.setRetryHandler(httpRequestRetryHandler)
> 			.setDefaultCredentialsProvider(basicCredentialsProvider)
> 			.evictExpiredConnections()
> 			.evictIdleConnections(5, TimeUnit.SECONDS)
> 		  .build()
> Sometimes we could see a connection is created but not used and left in CLOSE_WAIT state.
we couldnt able to find the exact flow, since it happens randomly. 



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