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From "Stephen Dawkins (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-5659) IllegalStateException on Async call
Date Fri, 28 Mar 2014 11:47:16 GMT
Stephen Dawkins created CXF-5659:
------------------------------------

             Summary: IllegalStateException on Async call
                 Key: CXF-5659
                 URL: https://issues.apache.org/jira/browse/CXF-5659
             Project: CXF
          Issue Type: Bug
          Components: Transports
    Affects Versions: 2.7.10
            Reporter: Stephen Dawkins
            Priority: Minor


I've come acrossed an odd exception when attempting to use an Async JAX-WS Provider:
{code}java.lang.IllegalStateException: s=DISPATCHED i=false a=null
	at org.eclipse.jetty.server.HttpChannelState.complete(HttpChannelState.java:430)
	at org.eclipse.jetty.server.AsyncContextState.complete(AsyncContextState.java:92)
	at org.apache.cxf.transport.http.Servlet3ContinuationProvider$Servlet3Continuation.reset(Servlet3ContinuationProvider.java:131)
	at org.apache.cxf.transport.http.Servlet3ContinuationProvider.complete(Servlet3ContinuationProvider.java:55)
	at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:242)
	at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
	at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:717)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:544)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1112)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:479)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1046)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
	at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:159)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
	at org.eclipse.jetty.server.Server.handleAsync(Server.java:516)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:288)
	at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:237)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536)
	at java.lang.Thread.run(Thread.java:722){code}

>From what I've been able to determine, it appears it is attempting to call AsyncContext.complete()
after AsyncContext.dispatch() has been called from Servlet3Continuation.redispatch()/resume().

I changed the Servlet3.Continuation.reset() method to this to 'fix' it:
{code:java}        public void reset() {
            if (!isResumed) {
                context.complete();
            }
            obj = null;
        }{code}
But I'm not sure if that's correct.

I also changed the Servlet3Continuation.startAsyncAgain() method, as I spotted it adding a
duplicate listener:
{code:java}        void startAsyncAgain() {
            AsyncContext old = context;
            try {
                context = req.startAsync();
                context.addListener(this);
            } catch (IllegalStateException ex) { 
                context = old;
            }
        }{code}



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