With broker present

Jul 02 00:50:19 intelnuc64.osdev.nl test_connection[30797]: MQTT Client started[30797]: [MqttClient::MqttClient]
Jul 02 00:50:19 intelnuc64.osdev.nl [MqttClient::eventHandler][30797]: ConnectionTest - starting event handler.
Jul 02 00:50:19 intelnuc64.osdev.nl MqttClient[30797]: ConnectionTest - Request connect
Jul 02 00:50:19 intelnuc64.osdev.nl [ClientPaho][30797]: ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a - Setting the extra onConnected callback.
Jul 02 00:50:19 intelnuc64.osdev.nl [MqttClient::connectionStatusChanged][30797]: ConnectionTest - connection status of wrapped client ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a changed to 2
Jul 02 00:50:19 intelnuc64.osdev.nl ClientPaho[30797]: ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a - starting callback event handler
Jul 02 00:50:19 intelnuc64.osdev.nl [ClientPaho::onConnectSuccess][30797]: onConnectSucces triggered..
Jul 02 00:50:19 intelnuc64.osdev.nl [ClientPaho][30797]: onConnectSuccessOnInstance ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a - connected to endpoint localhost:1883 (mqtt version 4, session present FALSE )
Jul 02 00:50:19 intelnuc64.osdev.nl [MqttClient::connectionStatusChanged][30797]: ConnectionTest - connection status of wrapped client ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a changed to 4
Jul 02 00:50:30 intelnuc64.osdev.nl mosquitto[29463]: 1656715830: Client ConnectionTest_1_83746b87-431f-4ce1-82e3-2543e9b0a37a closed its connection.


Without a broker present

Jul 02 00:55:33 intelnuc64.osdev.nl test_connection[31574]: MQTT Client started[31574]: [MqttClient::MqttClient]
Jul 02 00:55:33 intelnuc64.osdev.nl [MqttClient::eventHandler][31574]: ConnectionTest - starting event handler.
Jul 02 00:55:33 intelnuc64.osdev.nl MqttClient[31574]: ConnectionTest - Request connect
Jul 02 00:55:33 intelnuc64.osdev.nl [ClientPaho][31574]: ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 - Setting the extra onConnected callback.
Jul 02 00:55:33 intelnuc64.osdev.nl [MqttClient::connectionStatusChanged][31574]: ConnectionTest - connection status of wrapped client ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 changed to 2
Jul 02 00:55:33 intelnuc64.osdev.nl ClientPaho[31574]: ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 - starting callback event handler
Jul 02 00:55:33 intelnuc64.osdev.nl ClientPaho[31574]: onConnectFailureOnInstanceConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 - connection failed with code MQTTASYNC_FAILURE (TCP/TLS connect failure)
Jul 02 00:55:33 intelnuc64.osdev.nl [MqttClient::connectionStatusChanged][31574]: ConnectionTest - connection status of wrapped client ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 changed to 0

Jul 02 00:55:42 intelnuc64.osdev.nl systemd[1]: Starting Mosquitto MQTT Broker...
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: mosquitto version 2.0.14 starting
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: Config loaded from /etc/mosquitto/mosquitto.conf.
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: Starting in local only mode. Connections will only be possible from clients running on this machine.
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: Create a configuration file which defines a listener to allow remote access.
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: For more details see https://mosquitto.org/documentation/authentication-methods/
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: Opening ipv4 listen socket on port 1883.
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: Opening ipv6 listen socket on port 1883.
Jul 02 00:55:42 intelnuc64.osdev.nl mosquitto[31610]: 1656716142: mosquitto version 2.0.14 running
Jul 02 00:55:45 intelnuc64.osdev.nl mosquitto[31610]: 1656716145: New connection from 127.0.0.1:42196 on port 1883.
Jul 02 00:55:45 intelnuc64.osdev.nl mosquitto[31610]: 1656716145: New client connected from 127.0.0.1:42196 as ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 (p2, c1, k5).
Jul 02 00:55:53 intelnuc64.osdev.nl mosquitto[31610]: 1656716153: Client ConnectionTest_1_9eaee6bb-325b-406a-ae70-b4f3e7a41268 closed its connection.