asp.net - Use Hub methods from controller?

Question

I am using SignalR 2 and I can not figure out how I can use my Hub methods e.g from inside a controller action.

I know I can do the following:

var hub = GlobalHost.ConnectionManager.GetHubContext<T>();
hub.Clients.All.clientSideMethod(param);

But that executes the method directly on the client side.

What if I have business logic inside my server side ClientSideMethod(param) method I want to call from my controller the same way as when it is called from the client side?

At the moment I use public static void ClientSideMethod(param) inside my hub and in that method I use the IHubContext from the ConnectionManager.

Is there no better was of doing this?

The following is not working (anymore in SignalR 2?):

var hubManager = new DefaultHubManager(GlobalHost.DependencyResolver);
instance = hubManager.ResolveHub(typeof(T).Name) as T;
instance.ClientSideMethod(param);

There I get a "Hub not created via Hub pipeline not supported" exception, when accessing the Clients.

Answer 1

It might work to create a "helper" class that implements your business rules and is called by both your Hub and your Controller:

public class MyHub : Hub
{
    public void DoSomething()
    {
        var helper = new HubHelper(this);
        helper.DoStuff("hub stuff");
    }
}

public class MyController : Controller
{
    public ActionResult Something()
    {
        var hub = GlobalHost.ConnectionManager.GetHubContext<MyHub>();
        var helper = new HubHelper(hub);
        helper.DoStuff("controller stuff");
    }
}

public class HubHelper
{
    private IHubConnectionContext hub;

    public HubHelper(IHubConnectionContext hub)
    {
        this.hub = hub;
    }

    public DoStuff(string param)
    {
        //business rules ...

        hub.Clients.All.clientSideMethod(param);
    }
}