Using Component Showcase configured to utilize Servlet 3.0's ARP deployed to Tomcat 7 is broken. Once the blocking connection is established, things eventually go awry and the application stops functioning completely.

Sometimes I see the following warning in the logs first:

    Apr 20, 2011 5:58:48 PM com.sun.faces.context.ExternalContextImpl getMimeType
    WARNING: JSF1091: No mime type could be found for file listen.icepush. To resolve this, add a mime-type mapping to the applications web.xml.
    Apr 20, 2011 5:58:48 PM com.sun.faces.application.resource.ResourceHandlerImpl logMissingResource
    WARNING: JSF1064: Unable to find or serve resource, listen.icepush.

But I always see the following exception eventually:

    Exception in thread "Timer-1" java.lang.RuntimeException: java.lang.IllegalStateException: Calling [asyncComplete()] is not valid for a request with Async state [DISPATCHED]
        at org.icepush.BlockingConnectionServer.respondIfPendingRequest(BlockingConnectionServer.java:133)
        at org.icepush.BlockingConnectionServer.run(BlockingConnectionServer.java:87)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
    Caused by: java.lang.IllegalStateException: Calling [asyncComplete()] is not valid for a request with Async state [DISPATCHED]
        at org.apache.coyote.AsyncStateMachine.asyncComplete(AsyncStateMachine.java:186)
        at org.apache.coyote.http11.Http11Processor.actionInternal(Http11Processor.java:511)
        at org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:815)
        at org.apache.coyote.Request.action(Request.java:344)
        at org.apache.catalina.core.AsyncContextImpl.complete(AsyncContextImpl.java:83)
        at org.icepush.servlet.AsyncAdaptingServlet$AsyncRequestResponse.respondWith(AsyncAdaptingServlet.java:66)
        at org.icepush.BlockingConnectionServer.respondIfPendingRequest(BlockingConnectionServer.java:131)
        ... 3 more

I did try setting the mime-type mapping in the web.xml, but that didn't seem to help.