Launch the application class SpringReactiveExampleApplication as a Java application. One of the last messages you would see in the startup log is Netty started on port(s): 8080. Netty is the default embedded server for Spring Reactive.
The following screenshot shows the browser when you navigate to the localhost:8080/static/stock-price.html URL:
When the Get Latest IBM Price button is clicked, EventSource kicks in and registers for events from "/stocks/price/IBM". As soon as an element is received, it is shown on the screen.
The following screenshot shows the screen after a few events are received. ...