16:20:59,361 ERROR (XNIO-3 I/O-1) [org.xnio.listener] <ChannelListeners.java:94> XNIO001007: A channel event listener threw an exception: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
        at io.undertow.protocols.alpn.JDK9AlpnProvider.getSelectedProtocol(JDK9AlpnProvider.java:99)
        at io.undertow.client.ALPNClientSelector$2.handleEvent(ALPNClientSelector.java:81)
        at io.undertow.client.ALPNClientSelector$2.handleEvent(ALPNClientSelector.java:77)
        at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
        at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
        at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1145)
        at io.undertow.protocols.ssl.SslConduit$SslWriteReadyHandler.writeReady(SslConduit.java:1222)
        at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:94)
        at org.xnio.nio.WorkerThread.run(WorkerThread.java:571)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at io.undertow.protocols.alpn.JDK9AlpnProvider.getSelectedProtocol(JDK9AlpnProvider.java:97)
        ... 8 more
Caused by: java.lang.UnsupportedOperationException
        at javax.net.ssl.SSLEngine.getApplicationProtocol(SSLEngine.java:1282)
        ... 12 more