def push_info(sid, data):
        # Data.find()
        if Relay.is_admin(sid) is False:
            return
        user_id = data['user_id']
        user = Relay.get_user(user_id)
        if user is None:
            return

        msg = data['msg']
        Relay.send_msg_by_user_id(user.get_id(), 'ACK_PUSH', msg)
        return
    def user_exit(sid):
        if Relay.is_admin(sid) == True:
            Relay.kill_admin(sid)
            print('这个http服务器的管理员退出了', sid)
            return

        user = Relay.get_user_by_sid(sid)
        if user is not None:
            user_id = user.get_id()
            Relay.user_exit(user_id)
            print('这个普通用户退出了', sid)

        print(sid, '退出了推送系统')
        return