Primefaces Chat Application - web.xml Invalid content was found starting with element

I want to implement the PF 3.5 Chat Application on a `tomcat 7` server. I have added that dependencies: ``` <dependency> <groupId>org.atmosphere</groupId> <artifactId>atmosphere-runtime</artifactId> <version>1.0.1</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.1</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-simple</artifactId> <version>1.7.1</version> </dependency> ``` However, I when I implement that `web.xml`: ``` <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> ``` ... ``` <servlet> <servlet-name>Push Servlet</servlet-name> <servlet-class>org.primefaces.push.PushServlet</servlet-class> <load-on-startup>1</load-on-startup> <init-param> <param-name>org.atmosphere.cpr.broadcasterCacheClass</param-name> <param-value>org.atmosphere.cache.HeaderBroadcasterCache</param-value> </init-param> <init-param> <param-name>org.atmosphere.cpr.broadcasterClass</param-name> <param-value>org.atmosphere.cpr.DefaultBroadcaster</param-value> </init-param> <init-param> <param-name>org.atmosphere.cpr.broadcastFilterClasses</param-name> <param-value>org.atmosphere.client.TrackMessageSizeFilter</param-value> </init-param> <init-param> <param-name>org.atmosphere.cpr.sessionSupport</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>Push Servlet</servlet-name> <url-pattern>/primepush/*</url-pattern> </servlet-mapping> ``` As an excpetion I get: ``` cvc-complex-type.2.4.a: Invalid content was found starting with element 'init-param'. One of '{"http://java.sun.com/ xml/ns/javaee":run-as, "http://java.sun.com/xml/ns/javaee":security-role-ref}' is expected. ``` btw I get the exception at the `<init-param>` tag. I really appreciate your answer! UPDATE I get the same excpetion when I just write that: ``` <servlet> <servlet-name>Push Servlet</servlet-name> <servlet-class>org.primefaces.push.PushServlet</servlet-class> <load-on-startup>1</load-on-startup> <init-param> <param-name>channels</param-name> <param-value>chat,counter</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>Push Servlet</servlet-name> <url-pattern>/prime-push/*</url-pattern> </servlet-mapping> ``` I also get the expcetion at the `<init-param>` tag