Node JS radio (audio stream) - node.js

Question

Good evening! I just try to do my own internet radio, using Node JS. I saw a lot of questions and tutorials about it, but all of them are old and hard to understand.
const fs = require('fs'),
files = fs.readdirSync('./music'), // I have some mp3 in music folder
clips = [],
dhh = fs.createWriteStream('./tracks.mp3'); // create output stream
let stream, currentfile;
files.forEach(file => {
clips.push(file);
});
// recursive function
const main = () => {
if (!clips.length) {
dhh.end('Done');
return;
}
currentfile = './music/' + clips.shift();
stream = fs.createReadStream(currentfile);
stream.pipe(dhh, { end: false });
stream.on('end', function() {
console.log(currentfile + ' appended');
main();
});
};
main();
So I have all my mp3 in one single file. What can I do to stream this file to lot of different users, when they are connected. Lot of answers about it advice use BinaryJS, but it was written about 5 years ago.
I just do not how to start, so I need your help. Thank you!
I tried something like this
const http = require('http'),
fs = require('fs'),
filePath = './music/my.mp3',
stat = fs.statSync(filePath);
http.createServer(function(request, response) {
fs.createReadStream(filePath).pipe(response);
response.writeHead(200, {
'Content-Type': 'audio/mpeg',
'Content-Length': stat.size,
});
}).listen(4000);
When user connect to port 4000, music starts playing, but it is not online stuff, when another user connect music also playing from beginning, but I want to do it like online radio. But it doesn't work :(

Answer 1

I'm also tryin to do the same thing ur doing, and found a very informative blog article here. There's one just one thing in it, it doesn't explain how to add writables/ consumers to the server, so it is incomplete. But you can create 90% of your radio with the rest. Also I used a different approach so I'd like to share it here to help another soul. ('writable1' is not defined)Feel free to correct the code.
const express = require('express'),
router = express.Router(),
fs = require('fs');
Throttle = require('throttle'),
ffprobe = require('ffprobe'),
ffprobeStatic = require('ffprobe-static');
// Play all songs from db
router.get('/', function(req, res){
const bitRate = ffprobe('myAudio.mp3', { path: ffprobeStatic.path }, function(err, info){
console.log(info.streams[0].bit_rate);
});
const readable = fs.createReadStream('myAudio.mp3');
const throttle = new Throttle(bitRate / 8);
const writables = [writable1, writable2, writable3];
readable.pipe(throttle).on('data', (chunk) => {
for (const writable of writables) {
writable.write(chunk);
}
});
});
module.exports = router;