proteus-chat-demo

This demo project attempts to show that reactive applications can be implemented entirely in JS, in the browser.

• It begins with a fork of this reactive chat project: https://github.com/monkey-codes/java-reactive-chat

• Then it rips out the Java part, leaving the "ui" piece

• The critical change is in the "middleware" part of the app

  • In the source project, there is a single "websocket.js" file that sets up the connection
  • For posterity, I've left the "websocket.js" file named such and commented the relevant connection changes

• The application now simply connects to a Netifi broker endpoint and the clients broadcast their chats to each other

Preparing the Demo

• Ensure you have Yarn, Node, and NPM installed:
  • https://nodejs.org/en/download/
  • https://www.npmjs.com/get-npm
  • https://yarnpkg.com/lang/en/docs/install/

Running the Demo

• Fork/clone the repo and cd to the root directory from a terminal window

• Install the JavaScript dependencies with

  yarn

• The generated code in src/main/resources/web/public/ should be checked in, and can be updated with:

  yarn run build

• To view the app in action, start a web server to host the JS:

  yarn start

• Hit http://localhost:3000 in a webbrowser

• The application is now running your browser and you can either create more browser tabs or get your friends to run these steps also

  • This means you can shut down your local server as the JS is fully loaded into your browser tabs and will continue to work

• Proceed to chat