将http协议升级为ws协议

	//将http协议升级为ws协议
	conn, err := (&websocket.Upgrader{CheckOrigin: func(r *http.Request) bool {
		return true
	}}).Upgrade(c.Writer, c.Request, nil)
	if err != nil {
		http.NotFound(c.Writer, c.Request)
		return
	}