mqtt开启监控消息，根据消息内容退出监控

场景：mqtt开启监控消息，根据消息内容退出监控

问题描述：mqtt的loop函数是整个on_message完全执行完成，才会真正on_pulish

二话不说，直接上代码

 

=========================================================
# 主程
thread_xxx = threading.Thread(target=run)
thread_xxx.start()
def run(self):
  while 1:
     self.client.loop()
     if STOP or client.flag == "xxx":
       break
# client类
def on_message(self, client, userdata, msg):
     on_publish(topic, tmp, 1)
     msg_payload = "" # 当finish时，上一条不会执行, 假动作

============================================================
client.loop_start()
thread_xxx = threading.Thread(target=run)
thread_xxx.start()

def run(self):
  while 1:
    if STOP or client.flag == "xxx":
       client.disconnect()
       break