samples/simplerpc/war/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app>

	<servlet>
		<servlet-name>simpleRPC</servlet-name>
		<servlet-class>
			com.google.gwt.sample.simplerpc.server.SimpleRPCServiceImpl
		</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>simpleRPC</servlet-name>
		<url-pattern>/simplerpc/simpleRPC</url-pattern>
	</servlet-mapping>

</web-app>