Icecast metadata capture - node.js

Question

I've been using the package node-icy to grab metadata from an icecast stream.
What is doing is is grabbing the metadata from the stream. Then, the stream is decoded using lame and played on the Speaker.
server.listen(port, ()=>{
icy.get(url, (res)=> {
// log HTTP responses headers
console.error(res.headers);
//log any "metadata" events that happen
res.on('metadata', (metadata)=>{
var parsed = icy.parse(metadata);
console.log('Metadata event');
console.error(parsed);
});
// Let's play the music (assuming MP3 data).
// lame decodes and Speaker sends to speakers!
res.pipe(new lame.Decoder())
.pipe(new Speaker());
});
console.log(`Server on port: ${port}`);
});
This will give me an output of the titles of the songs:
Metadata event
{ StreamTitle: 'ruby the hatchet - planetary space child - killer' }
If I remove
res.pipe(new lame.Decoder())
.pipe(new Speaker());
Then the metadata is grabbed only once. My guess is that the Speaker() function keeps running and when metadata changes, then icy.get will run res.on('metadata', ...).
I'm handling the streamer on the server and then send it to the Client on Angular 5. Is there a way to keep the icy.get(...) listening without using Speaker(). I'm fairly new to streams. Any help would be appreciated.

Answer 1

I was able to solve this problem by using
var icy = require('icy');
var devnull = require('dev-null');
icy.get(url, function (res) {
// log any "metadata" events that happen
res.on('metadata', function (metadata) {
const parsed = icy.parse(metadata);
console.log('metadata', parsed);
});
res.pipe(devnull());
});
You can see it here:
https://github.com/TooTallNate/node-icy/issues/16