<dependency>
            <groupId>org.atmosphere</groupId>
            <artifactId>atmosphere-cometd</artifactId>
            <version>...</version>
        </dependency>

    <servlet>
        <servlet-name>cometd</servlet-name>
        <servlet-class>org.atmosphere.cometd.CometdServlet</servlet-class>
        <init-param>
            <param-name>timeout</param-name>
            <param-value>20000</param-value>
        </init-param>
        <init-param>
            <param-name>interval</param-name>
            <param-value>0</param-value>
        </init-param>
        <init-param>
            <param-name>maxInterval</param-name>
            <param-value>10000</param-value>
        </init-param>
        <init-param>
            <param-name>maxLazyTimeout</param-name>
            <param-value>5000</param-value>
        </init-param>
        <init-param>
            <param-name>long-polling.multiSessionInterval</param-name>
            <param-value>2000</param-value>
        </init-param>
        <init-param>
            <param-name>logLevel</param-name>
            <param-value>0</param-value>
        </init-param>
        <init-param>
            <param-name>services</param-name>
            <param-value>org.cometd.examples.ChatService</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>cometd</servlet-name>
        <url-pattern>/cometd/*</url-pattern>
    </servlet-mapping>
</web-app>