How to start a MQTT Broker with WebSocket support in .NET Framework 4.6.1?

[skutter-x86]

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 test using NUnit)

I tried to use the MQTTnet.Extensions.WebSocket4Net, which is available in a separate NuGet, to no avail. Is there any example or documentation of this? All docs I found is a Wiki for MQTTnet v3, but not for v4 (for v4 I only found a few simple examples)

Thanks in advance!

[SeppPenner]

For v4, the "documentation" are the samples under https://github.com/dotnet/MQTTnet/tree/master/Samples. But I guess that Net Framework is not even supported anymore...