How to get Websockets working on tomcat 8

[Cory Showers]

Using 3.1.0.RC1 release

Java 7 

Tomcat 8.0.9

I just deployed my web app on Tomcat 8 and wanted to see how to get websockets going.  I got an exception on startup

java.lang.ClassNotFoundException: org.apache.catalina.websocket.WebSocketServlet

Did some digging and tomcat deprecated this class on Tomcat 8.  my web.xml looks like the following.     Does 3.1.0.RC1  have tomcat 8 support?  My app works with Tomcat 7 but not 8

   <servlet-class>org.granite.gravity.tomcat.TomcatWebSocketServlet</servlet-class>  

      <!--  <servlet-class>org.granite.gravity.servlet3.GravityAsyncServlet</servlet-class>  -->

<load-on-startup>1</load-on-startup>

</servlet>

  <servlet-mapping>

<servlet-name>WebSocketServlet</servlet-name>

<url-pattern>/websocketamf/*</url-pattern>

</servlet-mapping>  

[Cory Showers]

Any ideas on this? Tomcat8 docs said WebSocketServlet is deprecated,   Also as per the RC1 release notes its says granite support JSR 356 Websockets on tomcat 7/8.   Do I have configuration wrong?

• Websocket JSR 356 specification support on both client and server, for AMF and JMF. GraniteDS websockets now supports Jetty 8/9, Tomcat 7/8, GlassFish 3/4, WildFly 8 and Tyrus (client).

[Cory Showers]

I also noticed there is no tomcat8 server maven dependency but there is tomcat7/6 dependencies.

[William Drai]

Hi.

With Tomcat 8, you should be able to use the JSR 356 support.

The spec is quite different from servlets, so it's not any more a servlet definition, but you have to bootstrap it with this:

<listener>org.granite.gravity.websocket.GravityWebSocketDeployer</listener>

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[William Drai]

There is no specific support for Tomcat 8.

The tomcat7 jar should apply (except for websockets...).

In fact the org.granteds:granite-server maven dependency contains everything needed for most app servers.

[Cory Showers]

ahh ok.  So I should just remove the GravityServlet definition?  The only servlet definition in my web.xml should be the spring Dispatcher servlet.  and the new websocket listener.

<listener>org.granite.gravity.websocket.GravityWebSocketDeployer</listener>

<servlet>

<servlet-name>dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

 

<servlet-mapping>

<servlet-name>dispatcher</servlet-name>

<url-pattern>/graniteamf/*</url-pattern>

</servlet-mapping>

[Cory Showers]

made the change that did the trick.

thanks

[Sharif El-Borgi]

Cory would you mind posting an example of the web.xml!

For the life of me - i cannot work out how to get a simple websocket example going.

Thanks in advance

Sharif

[Cory Showers]

sure

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

 

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>

            /WEB-INF/spring/app-config.xml

         </param-value>

</context-param>

  

<!-- Spring listeners -->

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<listener>

<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>

</listener>

<listener>

<listener-class>org.granite.config.GraniteConfigListener</listener-class>

</listener>

<listener>

<listener-class>org.granite.gravity.websocket.GravityWebSocketDeployer</listener-class>

</listener>

<!-- Spring MVC dispatcher servlet that handles incoming AMF requests on 

the /graniteamf endpoint -->

<servlet>

<servlet-name>dispatcher</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>dispatcher</servlet-name>

<url-pattern>/graniteamf/*</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.html</welcome-file>

</welcome-file-list>

</web-app>

[Sharif El-Borgi]

Did you only have a spring example. 

Im just trying to do a vanilla example where i can leverage the websockets.

[Cory Showers]

yes I haven't tried to do it using non spring projects