See this thread https://groups.google.com/forum/#!topic/nodejs/A8wbaaPmmBQ
And the correct way to pipe is something like here
https://groups.google.com/forum/#!topic/nodejs/wtmIzV0lh8o
понедельник, 19 августа 2013 г., 22:44:00 UTC+4 пользователь Davis Ford
написал:
>
> I have the following code (using node v0.10.0 and Express 3.3.5) which is
> aimed at serving an mp3 audio file to an http client.
>
> app.get('/media/:id/play', function (req, res) {
>
> var file = findById(Number(req.params.id));
> if (!file) { return res.send(404); }
>
> res.writeHead(200, {
> 'Content-Type': 'audio/mpeg',
> 'Transfer-Encoding': 'chunked',
> 'Connection': 'close'
> });
>
> var readStream = fs.createReadStream(file.path);
>
> res.on('unpipe', function () {
> res.end();
> });
>
> readStream.pipe(res);
> });
>
> If I start the server and hit the URL in a browser it streams the audio
> just fine. If I kill the browser I can see that the server socket is
> closed ($NODE_DEBUG=net,http) and the readStream fires the close event.
>
> However, if I open the url in a browser again, the memory on the node
> process grows a couple MB each time, and never appears to get released. I
> have studied the API to try to ensure I'm cleaning up properly, but I don't
> see anything I'm missing -- which is why I'm posting here. What am I doing
> wrong?
>
>
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