【開發者筆記】MQTT python測試筆記

MQTT是基於訂閱/發佈的物聯網協議。python

python測試須要一個發送進程和接收進程,即一個發送客戶端和一個接收客戶端,若是這兩個客戶端工做在同一個topic下,那麼就能進行消息互通了。服務器

服務器用「iot.eclipse.org」就行了,避免了本身搭建服務器,而後流程還能夠跑通。eclipse

發送客戶端代碼:oop

import paho.mqtt.client as mqtt
import paho.mqtt.publish as publish

idx = 0
#往paho/temperature 一直髮送內容 while True: print("send success") publish.single("paho/temperature", payload="this is message:%s"%idx, hostname="iot.eclipse.org", client_id="lora1", # qos = 0, # tls=tls, port=1883, protocol=mqtt.MQTTv311) idx += 1

  接收客戶端代碼:測試

import paho.mqtt.client as mqtt

# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc):
    print("Connected with result code "+str(rc))


# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg):
    #在這裏處理業務邏輯
    print(msg.topic+" "+str(msg.payload))

client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message

client.connect("iot.eclipse.org", 1883, 60)
#訂閱頻道 client.subscribe("paho/temperature") # Blocking call that processes network traffic, dispatches callbacks and # handles reconnecting. # Other loop*() functions are available that give a threaded interface and a # manual interface. client.loop_forever()

  而後運行兩個客戶端,就能夠在接收端收到消息了。this

  MQTT服務器不負責存儲數據,須要編寫額外的接收客戶端來接收數據、分析、入庫等。spa

  MQTT服務器用的是iot.eclipse.org,若是碰巧兩我的在用同一個頻道,那可能收到別人的消息哦~code

  若是要搭建本身的MQTT服務器,那麼回頭再說。server

  玩一玩就行了,不要給服務器增長太多負擔喲~blog

 

 

參考資料:

  paho-qtt說明文檔

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