Hello Mark,

I get this sometimes too on the GAE/J developmenr web server after the
next web page has been served. I do not find this exception to be
reliably reproducible: sometimes it happens, usually is doesn't.

I am running GAE/J 1.4.2 with the JDK 1.6.0_24 for Microsoft Windows
XP.

An example of my errors are:

  org.apache.wicket.WicketRuntimeException: Unable to write the
response
    at org.apache.wicket.Response.handleException(Response.java:286)
    at org.apache.wicket.Response.write(Response.java:310)
    ...
  Caused by: java.io.IOException: Closed
    at org.mortbay.jetty.AbstractGenerator
$Output.write(AbstractGenerator.java:629)
    at org.mortbay.jetty.AbstractGenerator
$Output.write(AbstractGenerator.java:579)
    at org.apache.wicket.util.io.Streams.copy(Streams.java:159)
    at org.apache.wicket.util.io.Streams.copy(Streams.java:126)
    at org.apache.wicket.Response.write(Response.java:306)
    ... 32 more

This is followed immediately by what you get:

  java.lang.IllegalStateException: STREAM
    at org.mortbay.jetty.Response.getWriter(Response.java:616)
    ...

Ian


On Mar 16, 10:35 am, Mark Harrison <markajharri...@clickmate.com.au>
wrote:
> Hi, can you explain why jetty is returning a
> java.lang.IllegalStateException: STREAM?
>
> Is this a known issue?
> Is there something wrong with my code that is causing the issue?
> Does this happen on other implementations of Jetty
>
> I am using the Java Environment with Google App Engine 1.4.2 with JRE 1.7
> (x64) for Mac OSX. No exception is caught from try..catch block. The
> exception seems to occur after the page has finished execution. I am calling
> the JSP page directly (i.e. entering name into browser window).
>
> Note: I cannot see this exception on GAE server it only happens when running
> the local jetty on my Dev Machine.
>
> JSP
> ==========
>
> <html>
> <body>
> <%
> try
> {
>         response.sendError(401,"This will generate IllegalStateException");
>         // response.setStatus(401);}
>
> catch (Exception e)
> {
>         %>
>         <p>Caught exception with response.sendError(401)</p>
>         <%
>
> }
>
> %>
> </body>
> </html>
>
> EXCEPTION
> ==========
>
> Mar 16, 2011 12:19:32 PM com.google.apphosting.utils.jetty.JettyLogger warn
> WARNING: /Test.jsp
> java.lang.IllegalStateException: STREAM
>         at org.mortbay.jetty.Response.getWriter(Response.java:616)
>         at
> javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:112)
>         at
> org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)
>         at
> org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118)
>         at
> org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:188)
>         at
> org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:118)
>         at
> org.apache.jasper.runtime.JspFactoryImpl.access$100(JspFactoryImpl.java:40)
>         at
> org.apache.jasper.runtime.JspFactoryImpl$PrivilegedReleasePageContext.run(JspFactoryImpl.java:166)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at
> org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
>         at org.apache.jsp.Test_jsp._jspService(Test_jsp.java:83)
>         at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>         at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
>         at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
>         at
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
>         at
> com.google.appengine.tools.development.PrivilegedJspServlet.access$101(PrivilegedJspServlet.java:23)
>         at
> com.google.appengine.tools.development.PrivilegedJspServlet$2.run(PrivilegedJspServlet.java:59)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at
> com.google.appengine.tools.development.PrivilegedJspServlet.service(PrivilegedJspServlet.java:57)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
>         at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
>         at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
>         at
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)
>         at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>         at
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
>         at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>         at
> com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
>         at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>         at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
>         at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>         at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
>         at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
>         at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
>         at
> com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)
>         at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>         at
> com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:351)
>         at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>         at org.mortbay.jetty.Server.handle(Server.java:326)
>         at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
>         at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
>         at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
>         at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
>         at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
>         at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
>         at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

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