[jira] [Created] (FELIX-5053) IllegalArgumentException when forwarding request

["Sten Roger Sandvik (JIRA)" <ji...@apache.org>]

Sten Roger Sandvik created FELIX-5053:
-----------------------------------------

             Summary: IllegalArgumentException when forwarding request
                 Key: FELIX-5053
                 URL: https://issues.apache.org/jira/browse/FELIX-5053
             Project: Felix
          Issue Type: Bug
          Components: HTTP Service
    Affects Versions: http.base-3.0.0
            Reporter: Sten Roger Sandvik


It seems to be a problem with forwarding requests in certain cases. I have the following setup:

* Servlet A forwards the request to Servlet 2 (using RequestDispatcher).
* Servlet B writes to the response using an output stream (HttpServletResponse.getOutputStream()).

When this happens I get an IllegalStateException from Jetty that basically saying that the Writer cannot be closed since I have already used an OutputStream.

The code that I think is wrong (or possibly not robust enough) is in RequestDispatcherImp line 84. 

{code}
if (!request.isAsyncStarted())
{
  response.flushBuffer();
  response.getWriter().close();
}
{code}

The line that causes trouble is:

{code}
response.getWriter().close();
{code}

We should probably check if we can actually close this writer or just ignore the potential exception.


In my setup I have one servlet that writes to OutputStream using HttpServletResponse.getOutputStream(). Then I have another servlet that forwards the request to the first servlet. 



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