Databases
StackOverflow2013
Postsdbo
POClients is null when trying to send message via signalR
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POClients is null when trying to send message via signalR
    primarykey
    data
    text
    <p>I have the following hub in my MVC application from where I would like to send a simple message to my client side code:</p> <pre><code>using SignalR.Hubs; public class Progress : Hub { public void Send(string message) { // Call the addMessage method on all clients Clients.addMessage(message); } public Progress() { Clients.addMessage("Starting to analyze image"); } } </code></pre> <p>And the following javascript in my view</p> <pre><code> &lt;script src="/Scripts/jquery.signalR.js" type="text/javascript"&gt;&lt;/script&gt; &lt;script src="/signalr/hubs" type="text/javascript"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; $(document).ready(function () { // Proxy created on the fly var connection = $.connection('/signalr/hubs/progress'); // Declare a function on the chat hub so the server can invoke it connection.addMessage = function (message) { $('#messages').append('&lt;li&gt;' + message.Content + '&lt;/li&gt;'); }; // Start the connection connection.start(); }); &lt;/script&gt; } </code></pre> <p>My problem is when the code calls the constructor, or the Send method for that matter, the Clients object is null.</p> <p>Everything looks OK when I debug the client side code. The /signalr/hubs/ route returns javascript code and there are no errors when the javascript is run.</p> <p>I can add that the backend code runs on top of the Umbraco 5 CMS environment which I am not sure is causing any disturbances.</p> <p>Any suggestions on how I can debug/solve this?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USKristian Højklint Schneider
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POClients is null when trying to send message via signalR
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POClients is null when trying to send message via signalR
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POClients is null when trying to send message via signalR
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload