Signalr redis backplane updates not pushed to the clients
<p>We have configured the redis backplane in owin startup code of the web app. </p>

<pre><code>var config = new RedisScaleoutConfiguration(hangfireRedisConnection, scaleoutEventKey);
GlobalHost.DependencyResolver.UseRedis(config);

app.MapSignalR();
</code></pre>

<p>The web app runs a background job on a timer, that wakes up and notifies the client if an important event took place. After querying the backend, the background job calls into a simple HubService wrapper that takes IHubContext as a dependency and eventually calls Client.All.notify method on the hub to push down to the client:</p>

<p>HubService:</p>

<pre><code>private readonly IHubContext applicationHub;

public HubService(IHubContext applicationHub)
{
    this.applicationHub = applicationHub;
} 

public void NotifyClient()
{
    hubContext.Client.All.nofify(message); // &lt;- this is always called, with and without the backplane, however with the backplane it doesn't make it to the client
}
</code></pre>

<p>HubContext is registered at the startup:</p>

<pre><code>Container.RegisterInstance&lt;IHubContext&gt;(GlobalHost.ConnectionManager.GetHubContext&lt;ApplicationHub&gt;());
</code></pre>

<p>This works fine without the backplane, but doesn't with the backplane configured. I have verified in the debugger that the call is being made, but it doesn't make it down to the client.</p>

<p>Also, if we call signalr hub from the client (outside of the web app) either through js or signalr.client clients, the backplane works as advertised.</p>

<p>Is there something missing in the scenario where we're calling directly into hub context from within the web app itself without initiating the call from the client first?</p>