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From "Erik Bunn (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCORE-346) NIO: HttpAsyncService should couple IOSession and HttpContext set/getAttribute()
Date Tue, 30 Jul 2013 12:23:48 GMT

    [ https://issues.apache.org/jira/browse/HTTPCORE-346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13723784#comment-13723784

Erik Bunn commented on HTTPCORE-346:


Finally had a chance to back to my code and check. I'm sorry - I managed to skim over the
lookup of the NHttpConnection with HTTP_CONNECTION. 
This indeed provides a handle to the session context, and is sufficient for my purposes. Thank

> NIO: HttpAsyncService should couple IOSession and HttpContext set/getAttribute()
> --------------------------------------------------------------------------------
>                 Key: HTTPCORE-346
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-346
>             Project: HttpComponents HttpCore
>          Issue Type: Wish
>          Components: HttpCore NIO
>    Affects Versions: 4.2.4, 4.3-beta2
>            Reporter: Erik Bunn
>            Priority: Minor
> Under httpcore-4.1, I wrote code that attached identifying information (unique certificate
id) to the IOSession attribute context in SSL verification (where we have access to IOSession
only, ), and utilized that information at the request processing stage (where we have access
to HttpContext). HttpContext.getAttribute() proxied to its parent context, eventually reaching
the IOSession attributes.
> The refactoring for 4.2.x async processing has decoupled the HttpContext object available
in the HttpAsyncRequestHandler implementation methods from the IOSession. Looking at HttpAsyncService.processRequest(),
you can see that it provides HttpAsyncRequestHandler.handle() and .processRequest() with the
(always empty) BasicHttpContext contained in its state.context. 
> At both locations, HttpAsyncService does have access to the NHttpServerConnection containing
the previously established SessionHttpContext seen by IOSession. 
> 1) Could this context be sent to the HttpAsyncRequestHandler, instead of state.context?

> 2) Alternatively, would it be possible to initialize state.context attributes with the
contents of the session attributes in HttpAsyncService.connected() ?
> 3) Alternatively, would it be possible to modularize HttpAsyncService.state creation
to allow extending the class and customizing this behaviour?
> There may be security or nio object reuse implications that I am not immediately seeing,
and which might invalidate connecting the attribute storage in this way. I would appreciate
your input if that is the case. If not, I would claim this is a bug in the recent nio HttpContext
refactoring.  (Marked as minor under the assumption few people need to carry information between
such separated stages of iosession and request.)

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