improved the code about broadcasting
improved the code about broadcasting

v-rawang/SuperWebSocket,kerryjiang/SuperWebSocket,jmptrader/SuperWebSocket,wangzheng888520/SuperWebSocket,jogibear9988/SuperWebSocket,zhangwei900808/SuperWebSocket,v-rawang/SuperWebSocket,v-rawang/SuperWebSocket,v-rawang/SuperWebSocket,zhangwei900808/SuperWebSocket,jogibear9988/SuperWebSocket,kerryjiang/SuperWebSocket,jmptrader/SuperWebSocket,wangzheng888520/SuperWebSocket