We're seeing the following issue with a websocket endpoint on tomcat 8.0.15
when OnError tries to close the websocket session. What could be the problem?
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.tomcat.websocket.pojo.PojoEndpointBase.onError(PojoEndpointBase.java:134)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.onError(WsHttpUpgradeHandler.java:167)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.access$300(WsHttpUpgradeHandler.java:48)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onError(WsHttpUpgradeHandler.java:228)
at
org.apache.coyote.http11.upgrade.AbstractServletInputStream.onError(AbstractServletInputStream.java:209)
at
org.apache.coyote.http11.upgrade.Nio2ServletInputStream$1.failed(Nio2ServletInputStream.java:76)
at
org.apache.coyote.http11.upgrade.Nio2ServletInputStream$1.failed(Nio2ServletInputStream.java:49)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:128)
at sun.nio.ch.Invoker$2.run(Invoker.java:218)
at
sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.onWritePossible(WsRemoteEndpointImplServer.java:96)
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.doWrite(WsRemoteEndpointImplServer.java:81)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:444)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:335)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:264)
at
org.apache.tomcat.websocket.WsSession.sendCloseMessage(WsSession.java:536)
at org.apache.tomcat.websocket.WsSession.doClose(WsSession.java:464)
at org.apache.tomcat.websocket.WsSession.close(WsSession.java:441)
at com.testEndpoint.onWebSocketError(WebsocketEndpoint.java:52)
