https://issues.apache.org/bugzilla/show_bug.cgi?id=55316
Bug ID: 55316
Summary: Ugly error log when WS client diconnects unexpectedly
Product: Tomcat 8
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
When a WS browser client disconnects unexpectedly (e.g. in the SNake sample if
the user just closes the browser or loads another page) you get ugle ERROR logs
in the Tomcat server. E.g.
2013-07-27 12:04:34.424 ERROR 31847 --- [nio-8080-exec-7]
org.apache.tomcat.websocket.WsSession : Failed to send close message to
remote endpoint
java.io.IOException: java.util.concurrent.ExecutionException:
java.io.EOFException
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:221)
at
org.apache.tomcat.websocket.WsSession.sendCloseMessage(WsSession.java:466)
at org.apache.tomcat.websocket.WsSession.onClose(WsSession.java:430)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.close(WsHttpUpgradeHandler.java:172)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.access$200(WsHttpUpgradeHandler.java:45)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:198)
at
org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:169)
at
org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:95)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:630)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1585)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1543)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.util.concurrent.ExecutionException: java.io.EOFException
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase$FutureToSendHandler.get(WsRemoteEndpointImplBase.java:779)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:217)
... 14 common frames omitted
Caused by: java.io.EOFException: null
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.doClose(WsRemoteEndpointImplServer.java:126)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.close(WsRemoteEndpointImplBase.java:531)
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.onWritePossible(WsRemoteEndpointImplServer.java:107)
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.doWrite(WsRemoteEndpointImplServer.java:71)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:353)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:254)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:211)
... 14 common frames omitted
Presumably this is expected to be relatively normal, so I'd expect a lot less
noise (and no ERROR) in the log?
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