Steps to Reproduce

	<filter>
		<filter-name>DispatcherRichletFilter</filter-name>
		<filter-class>org.zkoss.stateless.ui.http.DispatcherRichletFilter</filter-class>
		<init-param>
			<param-name>basePackages</param-name>
			<param-value>org.zkoss.stateless.demo</param-value>
		</init-param>
	</filter>

with cloudMode=true

1. enable WebSocket

   	<listener>
   		<listener-class>org.zkoss.zkmax.au.websocket.WebSocketWebAppInit</listener-class>
   	</listener>
   

2. run IssueRichlet.java, visit the page , open the developer tool, check websocket connection

Current Result

it never stops opening more connections

Expected Result

just open required connection