title: Use default SignalR connection of Blazor to send "Hello World"
body: <p>I have a Blazor.NET application (server side) with SignalR hub.
  Problem is that I don't know how to customize this or how to use it for communication of connected Clients.</p>
  
  <p>The only function that I found, that will probably make the default settings is in here:</p>
  
  <pre><code>        app.UseEndpoints(endpoints =&gt;
          {
              endpoints.MapBlazorHub();
              endpoints.MapFallbackToPage("/_Host");
          });
  </code></pre>
  
  <p>But how can I use SignalR here to send e.g. "Hello World" Message to all connected clients?</p>
  
  <p>Right now in my sample project, when running via Service and connect in Browser I get the following Console output:</p>
  
  <pre><code>Normalizing '_blazor' to 'http://localhost:5000/_blazor'.
  WebSocket connected to ws://localhost:5000/_blazor?id=-ZZJzVxlOPSsRfLmGZZpVw.
  </code></pre>
  
  <p>That Client should catch all SignalR commands and in "Hello World" case should make output in Console.</p>
  
  <p>Is that possible?</p>
  
  <p>Thx!</p>