c# - SignalR: Startup class in different assembly -

I am writing a self-hosted signaller application, the host is a service of windows.

I want to use as a startup class as a class present in an external assembly.

If I write a startup class inside the assembly of service, then it works right.

If I put a class in another assembly referred by the service, then I can not be able to start signaller communication.

I did not use the Owin startup feature.

Can anyone help me with an example of a work?

I have already read this article, but still do not work.

Thanks in advance, Giuseppe