Forcing Atmosphere AsyncSupport

In case your application's contains both Tomcat and Jetty runtime, Atmosphere may fail to detect the proper AsyncSupport class. To fix the issue, just add in your web/application.xml

        <init-param>
            <param-name>org.atmosphere.cpr.asyncSupport</param-name>
            <param-value>org.atmosphere.container.*</param-value>
        </init-param>

available value are listed here For example, enabling Jetty 7/8

        <init-param>
            <param-name>org.atmosphere.cpr.asyncSupport</param-name>
            <param-value>org.atmosphere.container.Jetty7CometSupport</param-value>
        </init-param>