Websocket Error in Deployed War File (WildFly) ---------------------------------------------- Key: WFLY-3708 URL: https://issues.jboss.org/browse/WFLY-3708 Project: WildFly Issue Type: Bug Security Level: Public(Everyone can see) Reporter: Tom Goldsmith In Immutant incremental 195, I am seeing the following error when I deploy a .war file to WildFly and try to connect to a websocket: 12:30:22,273 WARN [org.jboss.modules] (XNIO-2 I/O-1) Failed to define class org.xnio.ChannelListener$Setter in Module "deployment.websocket-wildfly-test-0.1.0-SNAPSHOT-standalone.war:main" from Service Module Loader: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/modules/ModuleClassLoader) previously initiated loading for a different type with name "org/xnio/ChannelListener$Setter" at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_05] at java.lang.ClassLoader.defineClass(ClassLoader.java:760) [rt.jar:1.8.0_05] at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:361) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:482) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:277) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:92) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.Module.loadModuleClass(Module.java:568) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final] at org.projectodd.wunderboss.websocket.UndertowWebsocket$1.onConnect(UndertowWebsocket.java:43) [wunderboss-web-1.x.incremental.98.jar:] at io.undertow.websockets.WebSocketProtocolHandshakeHandler$1.handleUpgrade(WebSocketProtocolHandshakeHandler.java:190) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:271) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:221) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1131) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.terminateResponse(HttpServerExchange.java:1351) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.Connectors.terminateResponse(Connectors.java:78) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.ServerFixedLengthStreamSinkConduit.channelFinished(ServerFixedLengthStreamSinkConduit.java:33) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.exitFlush(AbstractFixedLengthStreamSinkConduit.java:273) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.flush(AbstractFixedLengthStreamSinkConduit.java:207) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:100) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.closeAndFlushResponse(HttpServerExchange.java:1489) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1470) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.spi.AsyncWebSocketHttpServerExchange.endExchange(AsyncWebSocketHttpServerExchange.java:187) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.upgradeChannel(Handshake.java:121) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.performUpgrade(Handshake.java:114) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.performUpgrade(Handshake.java:142) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.version13.Hybi13Handshake.handshakeInternal(Hybi13Handshake.java:61) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.handshake(Handshake.java:92) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.WebSocketProtocolHandshakeHandler.handleRequest(WebSocketProtocolHandshakeHandler.java:196) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:56) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.NameVirtualHostHandler.handleRequest(NameVirtualHostHandler.java:57) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.SetHeaderHandler.handleRequest(SetHeaderHandler.java:49) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:156) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:91) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:87) [xnio-nio-3.2.0.Final.jar:3.2.0.Final] at org.xnio.nio.WorkerThread.run(WorkerThread.java:539) [xnio-nio-3.2.0.Final.jar:3.2.0.Final] 12:30:22,282 ERROR [io.undertow.request] (XNIO-2 I/O-1) Blocking request failed HttpServerExchange{ GET /}: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/modules/ModuleClassLoader) previously initiated loading for a different type with name "org/xnio/ChannelListener$Setter" at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_05] at java.lang.ClassLoader.defineClass(ClassLoader.java:760) [rt.jar:1.8.0_05] at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:361) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:482) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:277) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:92) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.Module.loadModuleClass(Module.java:568) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final] at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final] at org.projectodd.wunderboss.websocket.UndertowWebsocket$1.onConnect(UndertowWebsocket.java:43) [wunderboss-web-1.x.incremental.98.jar:] at io.undertow.websockets.WebSocketProtocolHandshakeHandler$1.handleUpgrade(WebSocketProtocolHandshakeHandler.java:190) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.exchangeComplete(HttpReadListener.java:271) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpServerConnection.exchangeComplete(HttpServerConnection.java:221) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.invokeExchangeCompleteListeners(HttpServerExchange.java:1131) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.terminateResponse(HttpServerExchange.java:1351) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.Connectors.terminateResponse(Connectors.java:78) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.ServerFixedLengthStreamSinkConduit.channelFinished(ServerFixedLengthStreamSinkConduit.java:33) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.exitFlush(AbstractFixedLengthStreamSinkConduit.java:273) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.flush(AbstractFixedLengthStreamSinkConduit.java:207) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:100) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.closeAndFlushResponse(HttpServerExchange.java:1489) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1470) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.spi.AsyncWebSocketHttpServerExchange.endExchange(AsyncWebSocketHttpServerExchange.java:187) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.upgradeChannel(Handshake.java:121) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.performUpgrade(Handshake.java:114) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.performUpgrade(Handshake.java:142) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.version13.Hybi13Handshake.handshakeInternal(Hybi13Handshake.java:61) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.core.protocol.Handshake.handshake(Handshake.java:92) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.websockets.WebSocketProtocolHandshakeHandler.handleRequest(WebSocketProtocolHandshakeHandler.java:196) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.PathHandler.handleRequest(PathHandler.java:56) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.NameVirtualHostHandler.handleRequest(NameVirtualHostHandler.java:57) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.handlers.SetHeaderHandler.handleRequest(SetHeaderHandler.java:49) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:156) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:91) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final] at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66) [xnio-api-3.2.0.Final.jar:3.2.0.Final] at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:87) [xnio-nio-3.2.0.Final.jar:3.2.0.Final] at org.xnio.nio.WorkerThread.run(WorkerThread.java:539) [xnio-nio-3.2.0.Final.jar:3.2.0.Final] (that is the whole stacktrace). A sample app that reproduces this scenario for me can be found at the following link: https://dl.dropboxusercontent.com/u/37542498/websocket-wildfly-test.zip I am creating my .war file with lein-ring. The following command is used in terminal: lein ring uberwar I am then deploying to WildFly standalone by running the following commands from the WildFly bin: Terminal Tab #1: ./standalone Terminal Tab #2: ./jboss-cli.sh connect deploy <path-to-war-file>/websocket-wildfly-test-0.1.0-SNAPSHOT-standalone.war I am then using http://www.websocket.org/echo.html to connect to the websocket on port 5000. When I click the "connect" button, the aforementioned stacktrace is seen in the standalone WildFly terminal tab. I have cleared my maven cache and done everything I can think of to make sure it is a completely fresh install. Thanks, Tom