centrifugo server-side publish example

Run docker-compose to start centrifugo docker-compose up -d

Start backend server node index.js

Backend does:

• POST /token - signs a jwt token for user with secret from config.json (same for centrifugo)
• POST /subscribe - subscribes user to a 'test_channel' using centrifugo API (server-side)
• GET /index.html - renders static script with the workflow below
• Publishes dummy payload to channel 'test_channel' every second

index.html workflow:

1. Retrieves a token from backend
2. Connects to centrifugo
3. Asks backend for a server-side subscription
4. Defines event listener to console.log payloads on server-side 'publish' event as it stated in official repo https://github.com/centrifugal/centrifuge-js#server-side-subscriptions

Then you can open in browser http://localhost:3000 to look at server-side publications at the console

By default centrifugo runs on port 8000 and Node API backend on port 3000