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DWR invocation exception, Cannot send a request in the socket listener thread, BACNet, Mango 2.4


  • Hi, I'm testing the bacnet in mango2.4 (latest at the date)

    java: ```

    java -version
    java version "1.7.0_55"
    OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1~deb7u1)
    OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)

    
    i add the data point, all works,  but looks like it fails to subscribe to COV, and throws a critical
    

    Cannot send a request in the socket listener thread

    but nothing on the console,
    
    and when i force the point refresh it throws the "DWR invocation exception" in the console,
    stack trace:
    

    ERROR 2014-07-30 10:23:14,925 (com.serotonin.m2m2.web.dwr.util.ExceptionDetectionFilter.doFilter:38) - DWR invocation exception
    java.lang.NullPointerException
    at com.serotonin.bacnet4j.LocalDevice.send(LocalDevice.java:396)
    at com.serotonin.ma.bacnet.BACnetDataSourceRT.forcePointRead(BACnetDataSourceRT.java:366)
    at com.serotonin.m2m2.rt.RuntimeManager.forcePointRead(RuntimeManager.java:482)
    at com.serotonin.m2m2.web.dwr.BaseDwr.forcePointRead(BaseDwr.java:238)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(ExecuteAjaxFilter.java:34)
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
    at com.serotonin.m2m2.web.dwr.util.TranslationsFilter.doFilter(TranslationsFilter.java:37)
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
    at com.serotonin.m2m2.web.dwr.util.ExceptionDetectionFilter.doFilter(ExceptionDetectionFilter.java:26)
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
    at com.serotonin.m2m2.web.dwr.util.DwrPermissionFilter.doFilter(DwrPermissionFilter.java:38)
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
    at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:431)
    at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:283)
    at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:52)
    at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
    at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:538)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1352)
    at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:77)
    at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:141)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:937)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:871)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
    at org.eclipse.jetty.server.Server.handle(Server.java:346)
    at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:589)
    at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1065)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:823)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:220)
    at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:535)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:40)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:529)
    at java.lang.Thread.run(Thread.java:744)

    
    
    Thoughts?
    
    Thanks.
    
    

  • What bacnet module version are you using?


  • version 2.1.0


  • That is very odd, I'm really not sure why you are getting that. We made lots of improvements to the BACnet module in this version and it seems to be very stable in all our testing and usage.