I have a self-hosted WCF service with the InstanceContextMode set to PerSession.
How can I detect new client connections (sessions) to my service from the host application and use that new session context to observe my service trough its events?

Something like:

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
public class MyService : IMyService {
    public event EventHandler ClientRegistered;
    public event EventHandler FileUploaded;
}

and from my host application to be able to do:

ServiceHost svc = new ServiceHost(typeof(MyService));
svc.Open();

// something like:
svc.NewSession += new EventHandler(...)

//...

public void SessionHandler(InstanceContext SessionContext) {
    MySessionHandler NewSessionHandler = new MySessionHandler(SessionContext);

    // From MySessionHandler I handle the service's events (FileUploaded, ClientRegistered) 
    // for this session and notify the UI of any changes.
    NewSessionHandler.Handle();
}