Hi, I’m trying to compile Undertow having some problems. When I use Oracle jdk1.8.0_31, I get compile-errors, with jdk1.8.0_71, last week the test WebSocketClient13TestCase got stuck, with the latest updates I get the test-failure: Tests in error: io.undertow.websockets.client.version13.WebSocketClient13TestCase.testMessageViaWssProxy(io.undertow.websockets.client.version13.WebSocketClient13TestCase) Run 1: PASS Run 2: WebSocketClient13TestCase.testMessageViaWssProxy » Runtime Buffer Leak io.unde... in ./target/surefire-reports/io.undertow.websockets.client.version13.WebSocketClient13TestCase-output.txt: java.nio.channels.ClosedChannelException at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:528) at io.undertow.conduits.IdleTimeoutConduit.read(IdleTimeoutConduit.java:202) at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127) at io.undertow.server.protocol.framed.AbstractFramedChannel.receive(AbstractFramedChannel.java:357) at io.undertow.websockets.core.AbstractReceiveListener.handleEvent(AbstractReceiveListener.java:38) at io.undertow.websockets.core.AbstractReceiveListener.handleEvent(AbstractReceiveListener.java:33) at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:884) at io.undertow.server.protocol.framed.AbstractFramedChannel$FrameReadListener.handleEvent(AbstractFramedChannel.java:865) 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:1059) at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88) at org.xnio.nio.WorkerThread.run(WorkerThread.java:559) java.lang.RuntimeException: java.nio.DirectByteBuffer[pos=0 lim=17408 cap=17408] NO: 178 [NO_CONTEXT] at io.undertow.testutils.DebuggingSlicePool$DebuggingBuffer.<init>(DebuggingSlicePool.java:67) at io.undertow.testutils.DebuggingSlicePool.allocate(DebuggingSlicePool.java:38) at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:654) at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:530) at org.xnio.conduits.AbstractStreamSourceConduit.read(AbstractStreamSourceConduit.java:51) … But when I execute “mvn install” again, I get no errors. A colleague uses jdk1.8.0_60 apparently with no problems. Are there known problems with certain JDKs? Anybody tried HotSpot 1.8.0_71 successfully? Regards Erhard