web.xml

<servlet>
  <description>AtmosphereServlet</description>
  <servlet-name>AtmosphereServlet</servlet-name>
  <servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>
  <!-- limit classpath scanning for ManagedService instances to speed up boostrapping -->
  <init-param>
    <param-name>org.atmosphere.cpr.packages</param-name>
    <param-value>com.backbase.progfun.atmosphere</param-value>
  </init-param>
  <load-on-startup>0</load-on-startup>
  <async-supported>true</async-supported>
</servlet>
<servlet-mapping>
  <servlet-name>AtmosphereServlet</servlet-name>
  <url-pattern>/event/*</url-pattern>
</servlet-mapping>