I know for sure I am not using websockets in my application, but stack trace shows me wsfilter used by tomcat getting called for some reason,
Below is one of the stack trace I had in my application, exception was valid but if you look at complete stack trace below we can see exception propagates through all filters namely S2, Log4j Servlet, my custom filter and finally through WS Filter. Just for understanding purpose, is this valid flow , exceptions needs to bubble up through all the filters ? com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'mytable' doesn't exist at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:525) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.Util.getInstance(Util.java:386) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4237) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4169) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2617) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2778) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2828) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2777) at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1651) at MyApp.MyAppPackage.MyClassDAO.viewAllRecords(MyClassDAO.java:44) at MyApp.MyAppPackage.MyClass.processRequest(MyClass.java:51) at MyApp.MyAppPackage.MyClass.doGet(MyClass.java:78) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:64) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at MyApp.handlers.MyServlet.processRequest(MyServlet.java:75) at MyApp.handlers.MyServlet.doGet(MyServlet.java:239) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.MyFilter.MyApp.global.Handlers.trimresponse.doFilter(trimresponse.java:45) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313) 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:722) On Tue, Jun 30, 2015 at 12:23 PM, André Warnier <a...@ice-sa.com> wrote: > Hi. > > Sorry to jump in, and to top-post, and maybe make an irreverential comment > : > > But maybe the solution consists simply in renaming that filter, so that it > does not give the mistaken impression that the WebSocket protocol is > necessarily being used ? > > Kiran Badi wrote: > >> Hi Mark, >> >> Sorry to jumping in >> >> But even I have seen this in few of my exception traces though I never use >> websockets.Some where down the line when exception is thrown wsfilter >> shows >> up in traces.I am guessing it should be some kind of exception filter so >> it >> bubbles up for exception types irrespective of protocol. >> >> Let me check my old stack traces and post few snippets of it,but they were >> valid exception in my case just that I never had websockets in my app. >> >> On Monday, June 29, 2015, Mark Thomas <ma...@apache.org> wrote: >> >> On 29/06/2015 07:12, Ric Bernat wrote: >>> >>>> We have a Jersey application running on Tomcat 7.0.62. In production, >>>> 99.9% of our web service calls run quickly (e.g., 100ms), but there are >>>> about half a dozen web service calls per hour that take an extraordinary >>>> amount of time to complete: 30-120 seconds (not ms). >>>> >>>> We do not use WebSockets in our application. However, our profiling tool >>>> clearly shows that Tomcat is invoking the WebSocket protocol on the >>>> slow-running web service calls. In the stack trace below, see this line: >>>> >>>> org.apache.tomcat.websocket.server.WsFilter.doFilter (WsFilter.java:46) >>>> >>> That shows nothing of the sort. I suggest you take a look at the code in >>> question before jumping to invalid conclusions. >>> >>> Mark >>> >>> >>> How can we track down what is causing Tomcat to use the WebSocket >>>> protocol, given that our application code does not make any references >>>> to WebSocket annotations, etc.? Or is there a configuration option we >>>> can use to cause Tomcat to not use WebSockets? >>>> >>>> Thanks much. >>>> >>>> Stack trace >>>> org.glassfish.jersey.server.ApplicationHandler.handle >>>> (ApplicationHandler.java:13) >>>> org.glassfish.jersey.servlet.WebComponent.service >>>> (WebComponent.java:401) >>>> org.glassfish.jersey.servlet.ServletContainer.service >>>> (ServletContainer.java:386) >>>> org.glassfish.jersey.servlet.ServletContainer.service >>>> (ServletContainer.java:335) >>>> org.glassfish.jersey.servlet.ServletContainer.service >>>> (ServletContainer.java:222) >>>> ….catalina.core.ApplicationFilterChain.internalDoFilter >>>> (ApplicationFilterChain.java:303) >>>> …g.apache.catalina.core.ApplicationFilterChain.doFilter >>>> (ApplicationFilterChain.java:208) >>>> org.apache.tomcat.websocket.server.WsFilter.doFilter >>>> >>> (WsFilter.java:46) >>> >>>> ….catalina.core.ApplicationFilterChain.internalDoFilter >>>> (ApplicationFilterChain.java:241) >>>> …g.apache.catalina.core.ApplicationFilterChain.doFilter >>>> (ApplicationFilterChain.java:208) >>>> org.apache.catalina.core.StandardWrapperValve.invoke >>>> (StandardWrapperValve.java:220) >>>> org.apache.catalina.core.StandardContextValve.invoke >>>> (StandardContextValve.java:122) >>>> …apache.catalina.authenticator.AuthenticatorBase.invoke >>>> (AuthenticatorBase.java:505) >>>> org.apache.catalina.core.StandardHostValve.invoke >>>> (StandardHostValve.java:170) >>>> org.apache.catalina.valves.ErrorReportValve.invoke >>>> (ErrorReportValve.java:103) >>>> org.apache.catalina.valves.AccessLogValve.invoke >>>> (AccessLogValve.java:957) >>>> org.apache.catalina.core.StandardEngineValve.invoke >>>> (StandardEngineValve.java:116) >>>> org.apache.catalina.connector.CoyoteAdapter.service >>>> (CoyoteAdapter.java:423) >>>> …g.apache.coyote.http11.AbstractHttp11Processor.process >>>> (AbstractHttp11Processor.java:1079) >>>> …ote.AbstractProtocol$AbstractConnectionHandler.process >>>> (AbstractProtocol.java:620) >>>> …ache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun >>>> (NioEndpoint.java:1747) >>>> …apache.tomcat.util.net.NioEndpoint$SocketProcessor.run >>>> (NioEndpoint.java:1706) >>>> java.util.concurrent.ThreadPoolExecutor.runWorker >>>> (ThreadPoolExecutor.java:1145) >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run >>>> (ThreadPoolExecutor.java:615) >>>> …he.tomcat.util.threads.TaskThread$WrappingRunnable.run >>>> (TaskThread.java:61) >>>> java.lang.Thread.run >>>> (Thread.java:745) >>>> >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>> >>> <javascript:;> >>> >>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>> >>> <javascript:;> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> <javascript:;> >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> <javascript:;> >>> >>> >>> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
