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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCORE-298) SSLIOSession state can get out of sync with underlying IOSession state
Date Wed, 02 May 2012 09:26:52 GMT

     [ https://issues.apache.org/jira/browse/HTTPCORE-298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Oleg Kalnichevski updated HTTPCORE-298:

    Fix Version/s: 4.2.1

I certainly do not see a problem with making such a change. However I would like to understand
why the I/O and SSL sessions got out of sync in the first place. Do you happen to know if
there is anything in your application code that can close the underlying i/o session bypassing
the SSL layer? The only reason for an I/O session to get shut down by the I/O reactor is due
to an unexpected runtime exception.

> SSLIOSession state can get out of sync with underlying IOSession state
> ----------------------------------------------------------------------
>                 Key: HTTPCORE-298
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-298
>             Project: HttpComponents HttpCore
>          Issue Type: Bug
>          Components: HttpCore NIO
>    Affects Versions: 4.1.4
>         Environment: observed on Ubuntu 10.0.4, but I think it could happen anywhere
>            Reporter: Sandeep Tamhankar
>             Fix For: 4.2.1
> Under heavy load, I've observed my application call SSLIOSession.isClosed() to decide
if the connection can be reused for a pending outbound request. It returns false. However,
the underlying IOSessionImpl is actually closed. I believe that AbstractIOReactor also holds
a reference to that underlying IOSession and it can be independently closed from that end.
> My proposed fix is simple (and very non-invasive, but possibly not correct in that I
don't have the SSLIOSession update its state upon discovering that the underlying IOSession
is closed): update SSLIOSession.isClosed as followed:
>     public boolean isClosed() {
>         return this.status >= CLOSING || this.session.isClosed();
>     }

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