Use SignalR hub to connect to another SignalR hub [closed]

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I have a website that has SignalR hub, in this hub I need to connect to another SignalR hub which is also hosted in a website.

public FirstHub : Hub, IDisconnect
{

  public void FirstMethod()
     ///Connect to second hub in the second website.
     HubConnection hubConnection = new HubConnection("http://localhost:1234");
     IHubProxy firstHub = hubConnection.CreateProxy("SecondWebSite.SecondHub");
     firstHub.On("secondCallBack", i =>
           {
               Caller.showMessage("Ok, Website 2 has return message");
           });

     hubConnection.Start().Wait();
     firstHub.Invoke("SecondMethod").ContinueWith(task =>
           {
               Caller.showMessage(task.Exception.Message);   
           }, TaskContinuationOptions.OnlyOnFaulted);
}

in the second website I have this hub :

public class SecondHub : Hub, IDisconnect
    {
        public void SecondMethod()
        {
            Caller.callBack("Yes, I got it");
        }
}

in the first website I have this javascript code

var firstHub = $.connection.firstHub;
 $.connection.hub.start({ transport: 'auto' }, function () {
        alert('connected');
    });
$('#TestButton').click(function () {
        firstHub.firstMethod();

firstHub.showMessage = function (msg) {
     alert(msg);
};

now when I open the page i see the message (connected), but when I press the test button, I get nothing !! and there is no error in the fire-bug console. but sometimes, I don't know how is this happen, when I step into the code and start debugging, the browse shows the message (Ok, Website 2 has return message).

I couldn't figure out what is happening !!
is this idea possible ?? am I missing something ???

I got these lines in the output window :

A first chance exception of type 'System.NullReferenceException' occurred in System.Web.dll
Failed to process message: System.NullReferenceException: Object reference not set to an instance of an object.
   at System.Web.HttpApplication.ThreadContext.Enter(Boolean setImpersonationContext)
   at System.Web.HttpApplication.OnThreadEnterPrivate(Boolean setImpersonationContext)
   at System.Web.AspNetSynchronizationContext.CallCallbackPossiblyUnderLock(SendOrPostCallback callback, Object state)
   at System.Web.AspNetSynchronizationContext.CallCallback(SendOrPostCallback callback, Object state)
   at System.Web.AspNetSynchronizationContext.Post(SendOrPostCallback callback, Object state)
   at SignalR.Client.Connection.OnReceived(String message) in D:\TestProjects\SignalR\SignalR.Client\Connection.cs:line 188
   at SignalR.Client.Transports.HttpBasedTransport.OnMessage(Connection connection, String response) in D:\TestProjects\SignalR\SignalR.Client\Transports\HttpBasedTransport.cs:line 139

Answer 1

@dfowler Ok, as I said in the comments, it was a bug in SignalR and it is solved now. and also my problem is solved.
Thanks David , Thanks everybody, you're awesome.
here are links to relevant topics.

SignalR .NET Client: Cannot Start Connection From Within Web Application App Domain

https://github.com/SignalR/SignalR/issues/221