title: SignalR Server How to get return value from client?
body: <p><strong>server</strong></p>
  
  <pre><code>public void SendToUser(string serverId, string message)
  {
      //Console.WriteLine(string.Format("New Msg. Send to {0}, Msg content:{1}", serverId, message));
      var _identity = ConnectedUsers.FirstOrDefault(aa =&gt; aa.serverId == serverId);
      var aaa = Clients.Client(_identity.connectionId).RcvSendToUser(message);
  }
  </code></pre>
  
  <p><strong>Client</strong></p>
  
  <pre><code>_hub.On("RcvSendToUser", x =&gt; Console.WriteLine(x) );
  </code></pre>
  
  <p>My question is:</p>
  
  <p>Server side and Client side are both Console project. 
  Can I return value on <code>_hub.on("RcvSendToUser")</code> ?  And if yes, how can I get this value at server side?</p>