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RadioVis STOMP Server

This is an implementation of a subset of the STOMP protocol in node.js, for purpose of deploying a RadioVis service.

RadioVis was standardised in ETSI TS 101 499, Hybrid Digital Radio (DAB, DRM, RadioDNS); SlideShow; User Application Specification.

Running

The recommended version of Node.js is v20

npm install
npm start

This will start a STOMP server running on port 61613.

Publishing images and text

Content is pushed to clients via a HTTP POST. The content can be sent using either URL encoding, or as JSON. Text and Image can be sent using separate requests or in the same request. A link may optionally be specified at the same time as an image.

For example to update the text for a station using curl:

curl -v http://localhost:3000/services/station1 -d 'text=Hello World'

Or to update the image and link:

curl http://localhost:3000/services/station2 \
  -d 'image=http://www.example.com/images/myimage.jpg' \
  -d 'link=http://www.example.com/programmes/breakfast'

Running Tests

npm test

To generate a test coverage report:

npm run coverage

Settings

The settings.js file is used to configure the server. It supports the following confection options:

Setting Name	Default	Description
`stompPort`	`61613`	STOMP port to listen for client connections on.
`stompHost`	`0.0.0.0`	IP address to bind STOMP connections to.
`adminPort`	`3000`	HTTP port to listen for HTTP admin connections on.
`adminHost`	`127.0.0.1`	IP address to bind HTTP admin interface to.
`servicesFile`	`services.json`	JSON file to load list of broadcast services from.
`republishFrequency`	`900`	How often to re-publish messages to subscribers.
`wildcard`	`false`	Enable support for wildcard bearer in topics (`*`)

Testing

BBC R&D have written a GUI python tool called RadioVisDemo which can be useful to test a RadioVis server:

https://github.com/bbc/RadioVisDemo

Or to test using the command-line, you could use the stomp.py tool to subscribe to messages:

stomp -H 127.0.0.1 -P 61613 -S 1.0 -L '/topic/fm/ce2/c201/09710/text'

Here is is another example subscribing to all services using a wildcard topic:

stomp -H 127.0.0.1 -P 61613 -S 1.0 -L '/topic/*/text' --verbose

License

The RadioVis STOMP Server is free software; you can redistribute it and/or modify it under the terms of the Apache License, Version 2.0.

The RadioVis STOMP Server is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Apache License, Version 2.0 for more details.

The favicon.ico image was created from the Mozilla radio SVG:

https://github.com/mozilla/fxemoji/blob/gh-pages/svgs/objects/u1F4FB-radio.svg

Which is licensed under Creative Commons Attribution 4.0 International (CC BY 4.0):

https://creativecommons.org/licenses/by/4.0/