title: ngOnInit is not working when the server send event service used in multiple componenets
body: <p>I created a service for getting SSE(server send events) from backend(Node). When I use this service in one component it's working as expected. But when I try to use in multiple components at very first time ngoninit triggers and loads the data perfectly. When I navigate to one component to another the ngoninit is not triggering and even the services are also not being called. I hope someone can help on this.</p>
  <p>Thanks in advance.</p>