Cannot create a session after the response has been committe

[rlao]

I was wondering if anyone has run into this problem and give me a little direction. We have an application which run great on firefox and IE (if IE is on the same machine as the webserver) but has a problem on IE where if the browser is on a different machine than the webserver. After logging in, when trying to navigate to other pages of the application, it gets thrown back to sign-on screen with the following error:


java.lang.IllegalStateException: Cannot create a session after the response has been committed
at org.apache.catalina.connector.Request.doGetSession(Request.java:2221)
at org.apache.catalina.connector.Request.getSession(Request.java:2031)
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:832)
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:843)
at org.jboss.seam.remoting.SeamRemotingServlet.doPost(SeamRemotingServlet.java:93)
at org.jboss.seam.remoting.SeamRemotingServlet.doGet(SeamRemotingServlet.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Unknown Source)

Thanks for your help in advance.

[shane.bryzak]

Based on the stack trace, you must be using an ancient version of Seam! ;)

That exception has been fixed recently in CVS, I recommend you get the Seam 2.0.0CR2 release or wait for GA.

[rlao]

you are correct; we use Seam 1.1.6 because some other frameworks we also use does not work with later version of Seam (that may have changed recently though, we haven't religiously checked into them)

Do you mind to educate me on what may be the bug that would cause this weird behavior? is there anything we can change or workaround without upgrading to later version of Seam? Thanks again

[shane.bryzak]

HttpRequest.getSession(true) needs to be called before any response is written. A workaround might be to put this call in a filter around the remoting servlet.