python example

import paho.mqtt.client as mqtt
import time

def on_connect(client, userdata, flags, reason_code, properties):
    print(f"Connected with result code {reason_code}")

def on_message(client, userdata, msg):
    print(msg.topic + " " + str(msg.payload))

def publish_message(client, topic, message):
    result = client.publish(topic, message)
    if result.rc == mqtt.MQTT_ERR_SUCCESS:
        print(f"Message {message} published to topic {topic}")

def subscribe_to_topic(client, topic):
    client.subscribe(topic)
    print(f"Subscribed to topic '{topic}'")

def ask_before_publish():
    time.sleep(1)
    message = input("Command untuk kontrol: ")
    publish_message(mqttc, "LBCMH/1", message)
    ask_before_publish()

mqttc = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
mqttc.on_connect = on_connect
mqttc.on_message = on_message

mqttc.username_pw_set(username="public", password="public")
mqttc.connect("public.cloud.shiftr.io", 1883, 60)

mqttc.loop_start()

ask_before_publish()

try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    print("Exit...")
finally:
    mqttc.loop_stop()
    mqttc.disconnect()