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    <p>If I understand correctly, you need a way of associating a task to a given user/client so that you can tell the client when their task has completed.</p> <p>SignalR API documentation tells me you can call JS methods for specific clients based on the client id (<a href="https://github.com/SignalR/SignalR/wiki/SignalR-Client" rel="noreferrer">https://github.com/SignalR/SignalR/wiki/SignalR-Client</a>). In theory you could do something like:</p> <ol> <li>Store the client id used by SignalR as part of the task metadata:</li> <li>Queue the task as normal.</li> <li>When the task is processed and de-queued: <ul> <li>Update your database with the status.</li> <li>Using the client id stored as part of that task, use SignalR to send that client a notification:</li> </ul></li> </ol> <p>You should be able to retrieve the connection that your client is using and send them a message:</p> <pre><code>string clientId = processedMessage.ClientId //Stored when you originally queued it. IConnection connection = Connection.GetConnection&lt;ProcessNotificationsConnection&gt;(); connection.Send(clientId, "Your data was processed"); </code></pre> <p>This assumes you mapped this connection and the client used that connection to start the data processing request in the first place. Your "primary navigation bar" has the JS that started the connection to the <code>ProcessNotificationsConnection</code> endpoint you mapped earlier.</p> <p><strong>EDIT: From <a href="https://github.com/SignalR/SignalR/wiki/Hubs" rel="noreferrer">https://github.com/SignalR/SignalR/wiki/Hubs</a></strong></p> <pre><code>public class MyHub : Hub { public void Send(string data) { // Invoke a method on the calling client Caller.addMessage(data); // Similar to above, the more verbose way Clients[Context.ClientId].addMessage(data); // Invoke addMessage on all clients in group foo Clients["foo"].addMessage(data); } } </code></pre>
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    1. POHow to use SignalR to notify web clients from ASP.NET MVC 3 that MSMQ tasks were completed
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    1. POHow to use SignalR to notify web clients from ASP.NET MVC 3 that MSMQ tasks were completed
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    1. COThe non-JS client API doesn't allow me to send a specific group or client a message. As a result, there is no value to send it to the background process. However, I do send the id back to the website, which then gets the "id" of the "owner" and sends a notification to the SignalR group with that "id". As users connect and disconnect, I add the clients to the group.
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    2. COIf you working within a hub it does. See modified answer.
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    3. COyour answer worked, however, in the end I decided to drop SignalR for a custom solution that transparently supports security. Therefore, a user can only send notifications to users authorized to see such messages. That requirement was never part of the original question, so I marked yours as the answer.
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