Paho MQTT "Unsupported callback API version" error
Feb 12, 2024 · client = mqtt_client.Client(mqtt_client.CallbackAPIVersion.VERSION1, client_id) This will configure the library to use the v1 callback API (as used with older versions of the …
mqtt - MQTTClient throws error when trying to connect - Stack …
Oct 20, 2024 · I'm devopling an application on a PicoW using Visual Studio (Thonny gives the same results). It uses umqtt.simple: from machine import Pin, I2C from time import sleep …
javascript - mqtt client in html page - Stack Overflow
Dec 17, 2020 · If you want to connect to a MQTT broker from with a web page you MUST use MQTT over Websockets. The Javascript sandbox in the browser will not allow you to do it any …
Using MQTTNet, how to subscribe to topic, parse then push back …
Jul 3, 2023 · Using MQTTNet, I am not very familiar with async in C# so I need a little bit help. I want to subscribe to a MQTT topic (external broker like mosquitto), parse messages, and for …
Paho updating userdata from on_message callback - Stack Overflow
Aug 25, 2020 · Basically, I want my userdata to act as a global flag that gets read and updated between successive executions of the on_message() callback. I wrote and ran the following …
Node-red beginners issue. Connection failed to broker: mqtt://
Jun 24, 2023 · Probably not. I have not installed anything extra apart from Node Red. After your reply I tried to install HiveMQ (and upgrade my Java 8 to Java 11). I still didn´t manage to …
mosquitto-client obtain refused connection - Stack Overflow
I want to use MQTT protocol using mosquitto library. First of all, I want to do some test installing mosquitto-clients sudo apt-get install mosquitto-clients This program provides two "method":
Mosquitto MQTT: "Connection was lost" error when publishing a …
May 5, 2025 · I am trying to test MQTT functionality and have installed Eclipse Mosquitto on my workstation. To subscribe to a topic, I use the following command: "C:\\Program …
mqtt - .net client keeps Connecting and Disconnecting over and …
Apr 1, 2023 · As per the MQTT spec "If the ClientID represents a Client already connected to the Server, the Server sends a DISCONNECT packet to the existing Client with Reason Code of …
Paho-MQTT client disconnect with code 16 and cannot connect …
Jun 20, 2023 · If I restart the container with the mqtt client, it starts working, but after a few hours it disconnects again (with code 16) with the possibility of reconnecting. I didn't …