Questions tagged [mqttnet]
78 questions
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MQTTNet UseApplicationMessageReceivedHandler not firing
I am doing a POC so here is the quick and dirty code. I use MQTT.fx desktop client to test Pub/Sub to my MQTT Server. Works fine. I can publish/subscribe to my topic. I can publish from another mqtt client and I get the messages. When using…
jbrabant
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MQTTnet and AWS IOT - can connect and publish, can't subscribe
I am trying to write a POC using MQTTnet and AWS IOT. I can successfully connect and publish messages, but as soon as I subscribe the connection is closed with MqttClientDisconnectedException
topic is "vin/my-vin"
MQTTnet 4.2.1.781
.NET 7 -…
Jason
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Mqttnet managedMqttClient processed vs received Application message
I recently tried implementing a mqttclient in c# using the mqttnet package.
I realized, that there are three events which can be invoked by the…
macman
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MQTTnet establishing connections to clients for both publishing and subscribing
I'm very new to MQTT, but have been using .Net for years. I have an existing process that gets data and sends commands to an external device. But I have a new customer that wants that data to be sent to their process using MQTT. I understand the…
Alexa Kirk
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MqttNet - How to implement MQTT server (broker) to receive messages that were published by MQTT client
I want to get sensor data that are published by a mqtt client. The client connect to my server but I cannot found any event on MqttServer that handle published messages by the client. Is it possible or is there any example about it ?
P.S: In the old…
hmfarimani
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Does C# maintain queue for events?
I am working on an IoT application and using C# events to subscribe to MQTT messages. I am using a library that raises an event when a message is received. I have written an Asynchronous EventHandler for processing the message.
The rate at which the…
Hem Bhagat
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Async handler for MQTTnet subscription handler crashes WPF application when updating ViewModel
I have a WPF application built using .NET 7 Windows Desktop SDK, that uses MQTTnet.
I have a ViewModel which defines some properties using INotifyPropertyChanged, and contains an MQTTnet client:
public class MyViewModel : INotifyPropertyChanged
{
…
Hydrargyrum
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MQTTCLient PublishAsync() goes to WaitingForActivation
I am using Mqttnet Client.
When publishing Data to the mosquitto broker after few seconds the task status is WaitingForActivation.
Connect:
var clientOptions= new MqttClientOptionsBuilder()
…
Sena
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Retained messages in the MQTT Message Protocol
I'm working with two MQTT client libs: One for Angular 14 (in my browser application), and the other is Mqtt 4.1.4 .Net client for Framework 4.6.
At one point I was publishing an MQTT test message from my front-end application with retain: true.…
bob.mazzo
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How to use MQTTnet WebSocket with selfhosted OWIN API Controller?
I need to build an MQTTnet Broker/Server, that is spoken to through a website on e.g. wss://host.domain.tld/mqtt.
This is already working in .NET Core, like this:
app.UseEndpoints(endpoints =>
{
…
0
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1 answer
Mqttnet client data crashes the subscribe code
I got the sample Mqttnet code (for publish and subcribe) from GitHub https://github.com/dotnet/MQTTnet/tree/master/Samples/Client
I am sending MQTT message to hivemq.cloud free private cluster port 8883. Also, I am using the HIVEMQ web client to…
userb00
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Changing WindowsForms UI in a Task c#
I wrote a windows forms application where I receive messages with MQTTNet from the broker. I want to change the UI according to the received message. But I couldn't make it happen. I took the client code from the MQTTNet github page. When I receive…
grkngs09
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Cannot connect to Mqtt Broker from .Net client running in Windows Service
I have created a Mqtt.Net Windows Service in C#, using Framework 4.6.1.
The service on my local Win 10 box works perfectly, publishing/subscribing to messages to/from the EMQX Broker.
However once I deploy my x64 release version to another box,…
bob.mazzo
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MQTTnet - Can't Read Incoming Messages From Subscribed Topic (Blazor MAUI)
I have recently been learning about MQTT technology. As a .NET developer, I am trying to use MQTTnet to integrate MQTT protocol into a new software project. MQTTnet is a .NET C# package which can be found here: GitHub: MQTTnet.
I am using BLE…
Jaden
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Testing MQTTnet with c# - code is just bailing out on connect
I'm having trouble getting some basic C# code running with MQTTnet 4.1 examples.
Using this test code at https://blog.behroozbc.ir/mqtt-client-with-mqttnet-4-and-c , and also referencing the samples at…
bob.mazzo
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