How to reproduce

[jfarcand]

the issue. I've deployed on Tomcat 8.0.15 and everything seems to starts properly. What is the next steps?

[jfarcand]

 WebSocket connection to 'ws://127.0.0.1:8080/myapp-0.0.1-SNAPSHOT/websocket/activity?X-Atmosphere-tracking-id=0&X-Atmosphere-Framework=2.2.5-javascript&X-Atmosphere-Transport=websocket&X-Atmosphere-TrackMessageSize=true&Content-Type=application/json&X-atmo-protocol=true' failed: Error during WebSocket handshake: Unexpected response code: 404
atmosphere.js:3117 Websocket failed. Downgrading to Comet and resending

Is /websocket/activity defined?

[henri-tremblay]

Have you started the application using spring-boot or dropper the war in tomcat?

This issue occurs when launching like this: mvn spring-boot:run

[henri-tremblay]

Yes. There is an ActivityService defined as

@ManagedService( path = "/websocket/activity") public class ActivityService

[henri-tremblay]

I'm also getting the handshake error when dropping the war directly in tomcat

[jfarcand]

There is serious issue here :-) Websocket is not available at all

DEBUG] pro.tremblay.myapp.aop.logging.LoggingAspect - Exit: pro.tremblay.myapp.repository.CustomAuditEventRepository.auditEventRepository() with result = pro.tremblay.myapp.repository.CustomAuditEventRepository$1@236b4a44
[WARN] org.atmosphere.util.IOUtils - META-INF/services/org.atmosphere.cpr.AtmosphereFramework not found in class loader
[ERROR] org.atmosphere.cpr.DefaultAsyncSupportResolver - failed to create comet support class: org.atmosphere.container.JSR356AsyncSupport, error: null
[ERROR] org.atmosphere.cpr.AtmosphereFramework - Failed to initialize Atmosphere Framework
java.lang.IllegalArgumentException: Unable to createorg.atmosphere.container.JSR356AsyncSupport
    at org.atmosphere.cpr.DefaultAsyncSupportResolver.newCometSupport(DefaultAsyncSupportResolver.java:242) ~[atmosphere-runtime-native-2.2.3.jar:2.2.3]
    at org.atmosphere.cpr.AtmosphereFramework.doInitParams(AtmosphereFramework.java:1330) [atmosphere-runtime-native-2.2.3.jar:2.2.3]
    at org.atmosphere.cpr.AtmosphereFramework.doInitParams(AtmosphereFramework.java:1305) [atmosphere-runtime-native-2.2.3.jar:2.2.3]

And

[ERROR] org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/] - Servlet  threw load() exception
java.lang.IllegalStateException: ServerContainer is null. Make sure you are using JDK7 and your server has websocket support enabled
    at org.atmosphere.container.JSR356AsyncSupport.<init>(JSR356AsyncSupport.java:43) ~[atmosphere-runtime-native-2.2.3.jar:2.2.3]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_25]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_25]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_25]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:408) ~[na:1.8.0_25]
    at org.atmosphere.cpr.DefaultAsyncSupportResolver.newCometSupport(DefaultAsyncSupportResolver.java:238) ~[atmosphere-runtime-native-2.2.3.jar:2.2.3]

[jfarcand]

I don't know how Spring Boot works, but normally the first class executed should be org.atmosphere.cpr.AtmosphereInitializer as this is where Tomcat's JSR 356 ServerContainer is retrieved.

[jfarcand]

Spring Boot is seems to be broken: https://github.com/spring-projects/spring-boot/issues/1722

[jfarcand]

Use

   private void initAtmosphereServlet(ServletContext servletContext) {
        log.error("Registering Atmosphere Servlet");
        AtmosphereServlet servlet = new AtmosphereServlet();
        Field frameworkField = ReflectionUtils.findField(AtmosphereServlet.class, "framework");
        ReflectionUtils.makeAccessible(frameworkField);
        NoAnalyticsAtmosphereFramework atmosphereFramework = new NoAnalyticsAtmosphereFramework();
        ReflectionUtils.setField(frameworkField, servlet, atmosphereFramework);
        ServletRegistration.Dynamic atmosphereServlet =
                servletContext.addServlet("atmosphereServlet", servlet);

        servletContext.setAttribute("AtmosphereServlet", atmosphereFramework);

        atmosphereServlet.setInitParameter("org.atmosphere.cpr.packages", "pro.tremblay.myapp.web.websocket");
        atmosphereServlet.setInitParameter("org.atmosphere.cpr.asyncSupport", Servlet30CometSupport.class.getName());
        servletContext.addListener(new org.atmosphere.cpr.SessionSupport());

        atmosphereServlet.addMapping("/websocket/*");
        atmosphereServlet.setLoadOnStartup(3);
        atmosphereServlet.setAsyncSupported(true);
    }

but there are serious issue with SpringBoot + WebSocket.

[henri-tremblay]

Ok. But I don't seem to have any @ServerEndpoint.

How is the AtmosphereInitializer supposed to by called?

[jfarcand]

AtmosphereInitializer is supposed to be called by the server itself. e.g any application deployed in a J2EE Container will be initialized when a META-INF/services is defined. This is Servlet Spec basic. Unclear to me why Spring Boot breaks that.

[henri-tremblay]

Wow. That's much better. Now I'm getting some live results. Thanks!

spring-boot seems to require to emulate some J2EE behavior manually. There is a SpringBootServletInitializer. So the AtmosphereInitializer should probably be called somewhere around there.

[henri-tremblay]

However, I'm getting a bunch of

[WARN] org.atmosphere.util.IOUtils - java.io.IOException: Stream closed at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:360) ~[tomcat-embed-core-8.0.15.jar:8.0.15] at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:190) ~[tomcat-embed-core-8.0.15.jar:8.0.15] at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284) ~[na:1.8.0_20] at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326) ~[na:1.8.0_20] at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178) ~[na:1.8.0_20] at java.io.InputStreamReader.read(InputStreamReader.java:184) ~[na:1.8.0_20] at java.io.BufferedReader.read1(BufferedReader.java:210) ~[na:1.8.0_20] at java.io.BufferedReader.read(BufferedReader.java:286) ~[na:1.8.0_20] at java.io.Reader.read(Reader.java:140) ~[na:1.8.0_20]

[henri-tremblay]

Hum. The SpringBootServletInitializer isn't called either. They must be called only when deployed on a server. I think initAtmosphereServlet is supposed to replace the AtmosphereInitializer but doesn't work very well.

At least I should be able to work now. Thanks!

[henri-tremblay]

Hum... The world is not saved yet. After a while, it freezes the browser and I'm getting these:

WARN] org.atmosphere.config.managed.ManagedAtmosphereHandler - AtmosphereRequest{ method=POST contextPath= servletPath=/websocket pathInfo=/activity requestURI=/websocket/activity requestURL=http://localhost:8080/websocket/activity AtmosphereResource UUID=33540705-9766-44ae-b31d-4874776b91d3 destroyable=true} received an empty body [WARN] org.atmosphere.util.IOUtils - java.io.IOException: Stream closed

But it kinda looks like the tracker is tracking the websocket themselves or something weird like that.