Secure WebSockets with NodeJS

NodeJS (+ ExpressJS) secure WebSockets (wss) and http/2 (h2, which is https by default) example. This example uses µWS on the sever side and native JavaScript implementation on the client side.

1. Run npm ci to install all packages.
2. Generate certificates and place them in the certs folder (./server/certs) for local development. If you don't know how to generate .pem and .key files, you can search the internet or run this in your terminal openssl req -x509 -newkey rsa:4096 -keyout miro.key -out miro.pem -days 365. If you set up a password for your certs, you will need to provide it when you start the server with the environment variable CERTPHRASE. (Note: Make sure the name of the certs you create matches the names inside server/server.js. If necessary, please update either the cert names or server.js so both match.)
3. Create an .env file to match the .env.example one and populate it to match your settings and preferences.
4. If you want to enable debug mode to see more verbose output in the console, please set APP_DEBUG="true" when you start the server
5. Start the servers with node server/server.js. If you use the default port configuration, the url will be https://localhost:8443 for the web server and wss://localhost:9000 for the WebSocket server. If you are using a different port(s) (by setting the environment variable(s) PORT and/or WS_PORT), update the URL(s) accordingly.

The WebSocket server expects connections on /api/v1/stream (wss://localhost:9000/api/v1/stream).