title: SinglarR with Angular: How to specify transport type
body: <p>I am using signalr 1.0.0-rc1-update1 from npm in my Angular application.</p>
  
  <p>This is how I currently connect to the hub:</p>
  
  <pre><code>this.hub = new signalR.HubConnectionBuilder()
        .withUrl(`${environment.apiUrl}operations?token=${this.user.token}`)
        .configureLogging(signalR.LogLevel.Trace)
        .build();
  
      this.hub.on('GetOperations', (data: OperationGetDto[]) =&gt; {
        this.data = data;
      });
  
      this.hub.start()
        .then(() =&gt; {
          this.hub.invoke('GetOperations');
        })
        .catch((e) =&gt; {
          this.notificationService.openSnackBar('Error while establishing connection');
        });
  </code></pre>
  
  <p>How do I specify the transport type to be, for example, long polling?</p>