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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HTTPCORE-165) Poor handling of CancelledKeyException with custom IOReactorExceptionHandler
Date Fri, 11 Jul 2008 09:26:32 GMT

     [ https://issues.apache.org/jira/browse/HTTPCORE-165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Oleg Kalnichevski updated HTTPCORE-165:

    Attachment: cancelledkey.patch


How about the following patch? Could you please test it with your app?


> Poor handling of CancelledKeyException with custom IOReactorExceptionHandler 
> -----------------------------------------------------------------------------
>                 Key: HTTPCORE-165
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-165
>             Project: HttpComponents HttpCore
>          Issue Type: Bug
>          Components: HttpCore NIO
>    Affects Versions: 4.0-beta2
>            Reporter: Patrick Moore
>         Attachments: cancelledkey.patch
> IOReactorExceptionHandler documentation for handle(RuntimeException ex) is misleading.
Specifically the documentation says :
>      @return <code>true</code> if it is safe to ignore the exception 
>      and continue execution of the I/O reactor; <code>false</code> if the
>      I/O reactor must throw {@link RuntimeException} and terminate 
> However, a CancelledKeyException should be rethrown because the BaseIOReactor and the
AbstractIOReactor expect and handle CancelledKeyException correctly.
> BUT -- NOT always.
> Looking at the call stack for where IOReactorExceptionHandler.handle(RuntimeException)
is called reveals some problems.
> If a custom IOReactorExceptionHandler was to return false (indicating that the CanceledKeyException
was to be rethrown or to do the rethrow itself) WOULD result in the IOReactor being shutdown:
>   BaseIOReactor.sessionClosed(IOSession)
>   BaseIOReactor.timeoutCheck(SelectionKey, long)

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