What could be the best way to expose soap base endpoint in .net core background application

I have a .net core background service application (in .net core 3.1) where I were running some HttpListeners for receiving callbacks getting some callbacks responses. Now one of the client needed a soap base end point as callback.
Please guide me for the best possible way

I am trying one option as https://github.com/DigDes/SoapCore/
But if someone else have implemented any other pacakge then please let me know