Creating the Deployment Descriptor

This section describes how to create a deployment descriptor to specify how your Comet-enabled web application should be deployed.

Creating the Deployment Descriptor

1. Create a file called web.xml and put the following contents in it:

   <?xml version="1.0" encoding="UTF-8"?>
   	<web-app version="2.5"
   		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_2_5.xsd ">
   			
   		<servlet>
   			<servlet-name>HiddenCometServlet</servlet-name>
   			<servlet-class>
   				com.sun.grizzly.samples.comet.HiddenCometServlet
   			</servlet-class>
   			<load-on-startup>0</load-on-startup>
   		</servlet>
   		<servlet-mapping>
   			<servlet-name>HiddenCometServlet</servlet-name>
   			<url-pattern>/hidden_comet</url-pattern>
   		</servlet-mapping>
   	</web-app>

   This deployment descriptor contains a servlet declaration and mapping for HiddenCometServlet. The load-on-startup attribute must be set to 0 so that the Comet-enabled servlet will not load until the client makes a request to it.