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MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.

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**I used the following code for subscription testing, but some unexpected situations occurred:** `using System; using System.Threading; using System.Threading.Tasks; using MQTTnet; using MQTTnet.Client; namespace ConsoleApp1 { internal class Program {...

question

### Describe the bug When I publish a relatively large number of messages on the same topic (the number varies) a small percentage of publish calls fail with MqttProtocolViolationException as...

bug

### Describe your question I note that support for all frameworks except for `net8.0` is being dropped from MQTTnet 5.0. In the [upgrade guide](https://github.com/dotnet/MQTTnet/wiki/Upgrading-guide#limited-framework-support) it mentions that one of the...

question

Is there any docs or examples on how to properly use the ManagedClient on version 4?, the wiki examples are for version 3 and i couldn't find any samples

question

This is an issue strictly related to another one that has been **already solved on the server side** (see [relevant comment](https://github.com/dotnet/MQTTnet/issues/494#issuecomment-464424109)), but may still affect the **clients** that are forced...

### Describe your question Continuing the question from this thread: https://github.com/dotnet/MQTTnet/issues/2077 Could you please dive a little deeper into why it is unsafe for multi-threading?   Also what would be your...

question

### How to start a MQTT Broker with WebSocket support in .NET Framework 4.6.1? I'm using .NET Framework 4.6.1, not able to use ASP.NET due project requirements (project for funtional...

question

Hi Team, I am trying to use MQTTnet to connect to a broker to receive JSON payload. My connect options builder is like this: ` var builder = new MqttClientOptionsBuilder()...

### Describe the bug Create a 32-bit CRC that you want to use as a subscription identifier that ends up equaling `1726790899`. Call `WithSubscriptionIdentifier(1726790899)` to set the identifier on a...

bug

### Describe the bug I'm getting the following error when trying to run an MQTT server on a oraclelinux docker container. ### Which component is your bug related to? -...

bug