First sort of working mqtt routines

software/test_software/mqtt_control_simple.py

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+# python 3.11
+
+import random
+import time
+
+from paho.mqtt import client as mqtt_client
+from paho.mqtt.client import CallbackAPIVersion
+
+
+broker = 'mqtt.meezenest.nl'
+port = 1883
+topic = "python/mqtt"
+# Generate a Client ID with the publish prefix.
+client_id = f'publish-{random.randint(0, 1000)}'
+# username = 'emqx'
+# password = 'public'
+
+msg_count = 1
+
+def connect_mqtt():
+    def on_connect(client, userdata, flags, rc, properties):
+        if rc == 0:
+            print("Connected to MQTT Broker!")
+        else:
+            print("Failed to connect, return code %d\n", rc)
+
+    def on_disconnect(client, userdata, rc):
+        print("Disconnected with result code: %s", rc)
+        reconnect_count, reconnect_delay = 0, FIRST_RECONNECT_DELAY
+        while reconnect_count < MAX_RECONNECT_COUNT:
+            print("Reconnecting in %d seconds...", reconnect_delay)
+            time.sleep(reconnect_delay)
+
+            try:
+                client.reconnect()
+                print("Reconnected successfully!")
+                return
+            except Exception as err:
+                logging.error("%s. Reconnect failed. Retrying...", err)
+
+            reconnect_delay *= RECONNECT_RATE
+            reconnect_delay = min(reconnect_delay, MAX_RECONNECT_DELAY)
+            reconnect_count += 1
+        print("Reconnect failed after %s attempts. Exiting...", reconnect_count)
+        global FLAG_EXIT
+        FLAG_EXIT = True
+
+    client = mqtt_client.Client(CallbackAPIVersion.VERSION2, client_id)
+    # client.username_pw_set(username, password)
+    client.on_connect = on_connect
+    client.on_disconnect = on_disconnect
+    client.connect(broker, port, 120)
+    return client
+
+
+def publish(client):
+    global msg_count
+    #while True:
+    time.sleep(1)
+    msg = f"messages: {msg_count}"
+    result = client.publish(topic, msg)
+    # result: [0, 1]
+    status = result[0]
+    if status == 0:
+        print(f"Send `{msg}` to topic `{topic}`")
+    else:
+        print(f"Failed to send message to topic {topic}")
+    msg_count += 1
+    if msg_count > 5:
+        #break
+        msg_count=1
+
+
+def run():
+    client = connect_mqtt()
+    client.loop_start()
+    while 1:
+        if client.is_connected():
+            print(client.is_connected())
+            publish(client)
+
+    #else:
+        #client.loop_stop()
+
+    client.loop_stop()
+
+
+if __name__ == '__main__':
+    run()