IoT: do I need to use MQTT or HTTP? - Stack Overflow
May 19, 2017 · MQTT is intended for situations where your connection may be intermittent or otherwise unreliable. Its various Quality-of-Service levels provide you with significant ways of …
How do I subscribe to all topics of a MQTT broker
Oct 2, 2015 · I want to connect a client which will monitor all the topics of the broker to respond to the events when I don't know what are names of topic.
mqtt - How to test the `Mosquitto` server? - Stack Overflow
Jul 8, 2023 · I am new to Mosquitto and MQTT, I downloaded the Mosquitto server library but I do not know how to test it. Is there any way to test the Mosquitto server?
Newest 'mqtt' Questions - Stack Overflow
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What is the maximum message length for a MQTT broker?
Dec 30, 2015 · The anatomy of an MQTT consists of a fixed size header, a variable length header, and a payload. The fixed size header is used to indicate what kind of message is …
Connect to Azure IoT Hub using MQTT - Stack Overflow
Jan 20, 2022 · Connect to Azure IoT Hub using MQTT Asked 3 years, 4 months ago Modified 3 years, 4 months ago Viewed 5k times
c# - MqttNet Basic example - Stack Overflow
Jun 21, 2022 · I have to create a very basic Mqtt broker-client demo I have therefore followed and downloaded this example. It works perfectly but it is a console application with Net5.0. I have …
mosquitto-client obtain refused connection - Stack Overflow
I experienced the same issue, for me it was in upgrading mosquitto for mqtt v5 support: $ mosquitto --version mosquitto version 2.0.14 mosquitto is an MQTT v5.0/v3.1.1/v3.1 broker. …
Paho MQTT "Unsupported callback API version" error
Feb 12, 2024 · An alternative option would be to install a v1 release (v1.6.1 is the latest; pip install "paho-mqtt<2.0.0" will install this). V2 does include quite a few fixes/enhancements so it is …
How to use MQTT over the internet? - Stack Overflow
Mar 9, 2015 · 5 Because mqtt use tcp connections, there is also a safe way to do this as follows: A private broker A behind a firewall. B private broker B behind another firewall. C cloud broker …