On Sat, Oct 19, 2013 at 4:26 PM, Bob DeRemer <bob.dere...@thingworx.com>wrote:
> > > > -----Original Message----- > > From: Niki Dokovski [mailto:nick...@gmail.com] > > Sent: Saturday, October 19, 2013 9:24 AM > > To: Tomcat Developers List > > Subject: Re: websocket connection (at startup) between 2 webapps in same > > Tomcat 7.0.47 instance hangs indefinitely > > > > On Sat, Oct 19, 2013 at 4:20 PM, Niki Dokovski <nick...@gmail.com> > wrote: > > > > > > > > > > > > > > On Sat, Oct 19, 2013 at 12:09 AM, Bob DeRemer > > <bob.dere...@thingworx.com>wrote: > > > > > >> Hi Guys,**** > > >> > > >> ** ** > > >> > > >> In our implementation, we have a gateway app that uses jsr websockets > > >> to communication with our main application server. In a small > > >> system, we want to run them both on a single Tomcat instance using > > >> the same Tomcat NIO connector, but directing to different respective > > >> WS paths. This works fine if you deploy the MAIN first, then the GW > > >> - so that MAIN is already up and running. If you restart Tomcat when > > >> both webapps are deployed - and the GW > > >> (client) starts first, it hangs indefinitely in the following code > > >> trying to establish a WS connection: > > >> > > > > > > Hi Bob, > > > Do you use the latest implementation? In your case, if got it > > > correctly, we have following: > > > > > This was with the latest TAGGED code (7.0.47), not trunk. If this was a > known issue that's fixed in TRUNK, let me know and I'll test it out. > > Thx - bob > I tested with a sample app that has an annotated server endpoint,an annotated client endpoint and a context listener. In the listener, I obtain instance of ServerContainer and try to connect to the server endpoint. In both implementations (trunk and tc7.0.x) I got "javax.websocket.DeploymentException: The HTTP response from the server [HTTP/1.1 404 Not Found] did not permit the HTTP upgrade to WebSocket" as expected. However, the response processing is a blocking operation and can lead to the wait you describe. Can you isolate the case with a test app? Obviously I'm missing something. > > > > > > > > > > 1. a socket listening - Hence connections are processed > > > > > 2. missing application - Hence 404 Not Found status code is > expected I > > expect to have 404 response code on initial upgrade request > > > > cheers > > Niki > > > > > > (sorry for previous partial response, hit send by mistake) > > > > > > > **** > > >> > > >> ** ** > > >> > > >> Is this a bug or a known limitation when a client/server in the same > > >> webapp try to connect at startup?**** > > >> > > >> ** ** > > >> > > >> Thanks**** > > >> > > >> ** ** > > >> > > >> "localhost-startStop-1" daemon prio=6 tid=0x000000000ef0f800 > > >> nid=0x1624 waiting on condition [0x000000001046e000]**** > > >> > > >> java.lang.Thread.State: WAITING (parking)**** > > >> > > >> at sun.misc.Unsafe.park(Native Method)**** > > >> > > >> - parking to wait for <0x00000007d6d98b18> (a > > >> java.util.concurrent.CountDownLatch$Sync)**** > > >> > > >> at > > >> java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)**** > > >> > > >> at > > >> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInt > > >> errupt(AbstractQueuedSynchronizer.java:834) > > >> **** > > >> > > >> at > > >> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared > > >> Interruptibly(AbstractQueuedSynchronizer.java:994) > > >> **** > > >> > > >> at > > >> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedIn > > >> terruptibly(AbstractQueuedSynchronizer.java:1303) > > >> **** > > >> > > >> at > > >> java.util.concurrent.CountDownLatch.await(CountDownLatch.java:236)*** > > >> * > > >> > > >> at sun.nio.ch.PendingFuture.get(PendingFuture.java:180)**** > > >> > > >> at > > >> > > org.apache.tomcat.websocket.WsWebSocketContainer.processResponse(WsWe > > >> bSocketContainer.java:568) > > >> **** > > >> > > >> at > > >> > > org.apache.tomcat.websocket.WsWebSocketContainer.connectToServer(WsWe > > >> bSocketContainer.java:317) > > >> **** > > >> > > >> at > > >> com.thingworx.core.communication.channels.jsr356.client.Jsr356ClientC > > >> hannel.connect(Jsr356ClientChannel.java:57) > > >> **** > > >> > > >> at > > >> > > com.thingworx.core.communication.endpoints.CommunicationEndpoint.conn > > >> ect(CommunicationEndpoint.java:186) > > >> **** > > >> > > >> at > > >> com.thingworx.core.communication.CommunicationSubsystem.startSubsyste > > >> m(CommunicationSubsystem.java:88) > > >> **** > > >> > > >> at > > >> com.thingworx.core.subsystems.SubsystemBase.start(SubsystemBase.java: > > >> 48)* > > >> *** > > >> > > >> at > > >> com.thingworx.apiserver.APIServerManager.startSubsystem(APIServerMana > > >> ger.java:92) > > >> **** > > >> > > >> at > > >> com.thingworx.core.subsystems.SubsystemBase.start(SubsystemBase.java: > > >> 48)* > > >> *** > > >> > > >> at > > >> com.thingworx.apiserver.Bootstrapper.contextInitialized(Bootstrapper. > > >> java:57) > > >> **** > > >> > > >> at > > >> org.apache.catalina.core.StandardContext.listenerStart(StandardContex > > >> t.java:4939) > > >> **** > > >> > > >> at > > >> org.apache.catalina.core.StandardContext.startInternal(StandardContex > > >> t.java:5434) > > >> **** > > >> > > >> - locked <0x00000007da3e0308> (a > > >> org.apache.catalina.core.StandardContext)**** > > >> > > >> at > > >> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)* > > >> *** > > >> > > >> - locked <0x00000007da3e0308> (a > > >> org.apache.catalina.core.StandardContext)**** > > >> > > >> at > > >> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase. > > >> java:1559) > > >> **** > > >> > > >> at > > >> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase. > > >> java:1549) > > >> **** > > >> > > >> at > > >> java.util.concurrent.FutureTask.run(FutureTask.java:262)**** > > >> > > >> at > > >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor. > > >> java:1145) > > >> **** > > >> > > >> at > > >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor > > >> .java:615) > > >> **** > > >> > > >> at java.lang.Thread.run(Thread.java:744)**** > > >> > > >> ** ** > > >> > > >> Locked ownable synchronizers:**** > > >> > > >> - <0x00000007da3a7ab0> (a > > >> java.util.concurrent.ThreadPoolExecutor$Worker)**** > > >> > > >> ** ** > > >> > > >> ** ** > > >> > > >> ** ** > > >> > > >> *Bob DeRemer* > > >> > > >> *Senior Director, Architecture and Development* > > >> > > >> ** ** > > >> > > >> [image: Description: Description: Description: Description: > > >> cid:image001.png@01CBE3DE.51A12030]**** > > >> > > >> http://www.thingworx.com**** > > >> > > >> Skype: bob.deremer.thingworx**** > > >> > > >> O: 610.594.6200 x812**** > > >> > > >> M: 717.881.3986**** > > >> > > >> ** ** > > >> > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org > For additional commands, e-mail: dev-h...@tomcat.apache.org > >
