https://bz.apache.org/bugzilla/show_bug.cgi?id=69845

            Bug ID: 69845
           Summary: java.lang.IllegalStateException: Inflater has been
                    closed
           Product: Tomcat 9
           Version: 9.0.110
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebSocket
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: -----

After updating Tomcat from 9.0.109 to 9.0.110 I got this exception in one of my
tests:

java.lang.IllegalStateException: Inflater has been closed
        at java.base/java.util.zip.Inflater.ensureOpen(Inflater.java:737)
        at java.base/java.util.zip.Inflater.inflate(Inflater.java:346)
        at
org.apache.tomcat.websocket.PerMessageDeflate.getMoreData(PerMessageDeflate.java:201)
        at
org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:401)
        at
org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:283)
        at
org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:129)
        at
org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:85)
        at
org.apache.tomcat.websocket.server.WsFrameServer.doOnDataAvailable(WsFrameServer.java:184)
        at
org.apache.tomcat.websocket.server.WsFrameServer.notifyDataAvailable(WsFrameServer.java:164)
        at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.upgradeDispatch(WsHttpUpgradeHandler.java:152)
        at
org.apache.coyote.http11.upgrade.UpgradeProcessorInternal.dispatch(UpgradeProcessorInternal.java:60)
        at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:57)
        at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:935)
        at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1833)
        at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
        at java.base/java.lang.VirtualThread.run(VirtualThread.java:456)

Of course, that's sporadic, but it happened on the first run and I haven't seen
it before so it's new. No idea what might be wrong, hopefully someone here
might be able to fix it.

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