Repeat signalR authenticate

projects/common/src/fm/services/event.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 import { IEventMessage } from '../models/event.message';
-import { Subject } from 'rxjs';
+import { Subject, timer } from 'rxjs';
 import { OAuthService } from 'angular-oauth2-oidc';
 import { HubConnection, HubConnectionBuilder, LogLevel ,HttpTransportType} from '@microsoft/signalr';
 import { AppConfig } from "../shared/app.config";
@@ -14,6 +14,7 @@ export class EventService {
   public event:Subject <IEventMessage> = new Subject<IEventMessage>();
   private _connection: HubConnection = null;
   private _apiEndPoint: string;
+  public authenticated:boolean = false;
     
   constructor(private oauthService: OAuthService, private appConfig: AppConfig) {
     this._apiEndPoint = appConfig.getConfig("apiEndPoint");
@@ -32,13 +33,19 @@ export class EventService {
     });
     this._connection.start().then(() => {
       this.Authenticate();
-    });    
+    });  
   }
 
   Authenticate() {
     var accessToken = this.oauthService.getAccessToken();
     if (accessToken) {
       this._connection.send('authenticate', this.oauthService.getAccessToken());
+      this.authenticated=true;
+    } else {
+      //try again after half a second
+       setTimeout(() => {
+         this.Authenticate();
+       }, 800);
     }
   }
 }