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From "Reinhard Poetz (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COCOON-1964) Redirects inside a block called via the servlet protocol fail
Date Tue, 11 Mar 2008 08:22:46 GMT

     [ https://issues.apache.org/jira/browse/COCOON-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Reinhard Poetz updated COCOON-1964:
-----------------------------------

    Summary: Redirects inside a block called via the servlet protocol fail  (was: Redirects
inside a block called via the blocks protocol fail)

> Redirects inside a block called via the servlet protocol fail
> -------------------------------------------------------------
>
>                 Key: COCOON-1964
>                 URL: https://issues.apache.org/jira/browse/COCOON-1964
>             Project: Cocoon
>          Issue Type: Bug
>          Components: - Servlet service framework
>    Affects Versions: 2.2-dev (Current SVN)
>            Reporter: Alexander Klimetschek
>            Priority: Critical
>         Attachments: cocoon-allow-redirect-in-called-block.patch
>
>
> If you do a redirect (from within a piece of flowscript "cocoon.redirectTo('cocoon:/foobar')"
or via redirect-to in the sitemap) inside a block that was called via the block: protocol
will fail since the re-use of the outputstream of the response (which happens to be a BlockCallHttpServletResponse)
does not work.
> This is due to the use of getWriter() after getOutputStream() has already been called.
The servlet api says that only one of them should be called, so there is a check in the implementation
of getWriter() that will throw an IllegalStateException. The patch removes that check, which
is kinda hack, but I don't know of any other cases within cocoon where such a re-use is made.
> The problem could be avoided if during the redirect a reset() or resetBuffer() would
be called on the response, but for some reason this does not happen with a redirect from within
a flowscript for a form.

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