SignalR 2.0 in VS2012 registration and Dependency Injection

问题

I was able to work with SignalR 1.13 with my own DI like this:

//Funq container
GlobalHost.DependencyResolver = new FunqDependencyResolver(container); 
RouteTable.Routes.MapHubs();

Now with the new version 2.0 I am stuck.

using Microsoft.Owin;
using Owin;
//SignalR 2.0 no longer uses RouteTable.Routes.MapHubs();
[assembly: OwinStartup(typeof(SignalRChat.Startup))]
namespace SignalRChat { 
    public class Startup {
        public void Configuration(IAppBuilder app) { app.MapSignalR(); }
    }
}

(New SignalR 2.0 setup in VS2013 screenshot)

Firstly, it's a screen from VS2013 from here. my VS2012 Pro doesn't have the Create New ...-> OWIN Startup class.I have hand written one. But now how do I call up the new startup class to replace the old MapHub() function?

Secondly, I was using the DI that runs the rest of the web project. How do I register signalR to my DI now?

EDIT --------------------------------------------

A bit more to the question. I create my DI container in Global.asax.cs->Application_Start(), but SignalR Startup.cs->Configuration() is automatically created and called. How do I pass my DI container to SignalR Startup?

Global.asax.cs (this runs automatically when app starts)

protected void Application_Start(object sender, EventArgs e)
{
    var appHost = new AppHost(); //DI init
    appHost.Init();
    var container = appHost.Container; //DI container here
    var resolver = new FunqDependencyResolver(container);
}

SignalRStarter.cs (this also runs automatically when app starts)

[assembly: OwinStartup(typeof(WebApp.SignalRStarter))]
namespace WebApp {
    public class SignalRStarter {
        public FunqDependencyResolver FunqDependencyResolver { get; set; }
        public bool EnableDetailedErrors { get; set; }

        public void Configuration(IAppBuilder app) {
            app.MapSignalR(new HubConfiguration() {
                EnableDetailedErrors = EnableDetailedErrors,
                Resolver = FunqDependencyResolver
            });
        }
    }
}

回答1:

You can still set the dependency resolver the same way you did in 1.1.3. However a better approach (does the same thing, just cleaner) would be to do:

app.MapSignalR(new HubConfiguration
{
    Resolver = new FunqDependencyResolver(container)
});

Note: app.MapSignalR() is the new RouteTable.Routes.MapHubs() for SignalR 2.0.0+, meaning you should no longer be doing RouteTable.Routes.MapHubs().

Now for your question about not having the Owin Startup class in VS2012, that's Ok! Just create a new blank class and copy n paste the code into your class. No other setup required.

回答2:

I used this approach below without changing HubConfiguration.

Using an existing IoC Container in SignalR 2.0

I shared the container for both SignalR and my web app, with resolving Hub from a CustomHubActivator, I can inject anything as parameters in my Hub.

来源：https://stackoverflow.com/questions/19626244/signalr-2-0-in-vs2012-registration-and-dependency-injection

标签

signalr

signalr-hub