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POSignalR Requests Throwing "Hub could not be resolved."
 

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  1. POSignalR Requests Throwing "Hub could not be resolved."
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    <p>I've been using SignalR since an early version and upgraded along the way however I have deployed my application to my Windows Server 2008 R2 production server and now the app crashes out with the " Hub could not be resolved." exception.</p> <p>edit: StackTrace Added:</p> <pre><code>[InvalidOperationException: 'stockitems' Hub could not be resolved.] Microsoft.AspNet.SignalR.Hubs.HubManagerExtensions.EnsureHub(IHubManager hubManager, String hubName, IPerformanceCounter[] counters) +426 Microsoft.AspNet.SignalR.Hubs.HubDispatcher.Initialize(IDependencyResolver resolver, HostContext context) +716 Microsoft.AspNet.SignalR.Owin.CallHandler.Invoke(IDictionary`2 environment) +1075 Microsoft.AspNet.SignalR.Owin.Handlers.HubDispatcherHandler.Invoke(IDictionary`2 environment) +363 Microsoft.Owin.Host.SystemWeb.OwinCallContext.Execute() +68 Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object extraData) +414 [TargetInvocationException: Exception has been thrown by the target of an invocation.] Microsoft.Owin.Host.SystemWeb.CallContextAsyncResult.End(IAsyncResult result) +146 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +288 </code></pre> <p>On my dev machine and local test server I am getting no issues.</p> <p>The hub in question is really simple:</p> <pre><code> [HubName("StockItems")] public class StockItemHub : Hub { } </code></pre> <p>Originally I thought it was an issue with the HubName so removed it but it still bombs out.</p> <p>Originally I thought it was due to dependency injection so I then changed my Global.asax to look as follows:</p> <pre><code> var signalRResolver = new SignalRDependencyResolver(); GlobalHost.DependencyResolver = signalRResolver; var configuration = new HubConfiguration { Resolver = signalRResolver }; RouteTable.Routes.MapHubs(configuration); AreaRegistration.RegisterAllAreas(); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters, config.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); </code></pre> <p>edit: what is SignalRDependencyResolver? SignalRDependencyResolver didn't exist until I tried to solve this issue. As I believe its a dependency injection issue I wrapped DefaultDependencyResolver overrode GetService and GetServices to first check my Ninject kernel for the type and if not fall back to the DefaultDependencyResolver</p> <p>Any ideas?</p> <p>The server is running IIS7, Windows Server 2008 with .Net 4.5 The application is an MVC 4 .Net 4.5</p>
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    1. USMJJames
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    1. COcheck this stack thread http://stackoverflow.com/questions/12494355/signalr-dependency-injection-via-spring-net
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      1. POSignalR Requests Throwing "Hub could not be resolved."
      1. USDave Alperovich
    2. COWhat is SignalRDependencyResolver
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      1. POSignalR Requests Throwing "Hub could not be resolved."
      1. USdavidfowl
    3. CO**Where** does the exception happen with what stacktrace? The full error message is important.
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      1. USusr
 

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