monro93 / poc-server-sent-events-kt-js

Proof of concept for server sent events using Kotlin and JavaScript

POC - server sent events kotlin + js

Description

This repository is a proof of concept to try the server sent events HTTP standard. It consits in the following parts:

• BackEnd
  • Endpoint to subscribe to the messages ServerSendEventController
  • Endpoint to trigger an Spring Event that will call the emitter RegisterEventController
  • Endpoint that renders a simple page with some js FEController
• Frontend
  • Simplest html file as possible
  • JS to handle the server sent events eventListener.js

Installation

mvn clean install

Starting the app

mvn spring-boot:run

Usage

Go to localhost:3099
Click on the button Connect, a call to /emitter would be done. After click on RegisterEvent and a GET call without response content to /register-event will be done. Notice how the output is being updated without any petition from the FE.