node.js - node request pipe hanging after a few hours -

i have endpoint in node app used download images

var images = {    'car': 'http://someurltoimage.jpg',    'boat': 'http://someurltoimage.jpg',    'train': 'http://someurltoimage.jpg'    }    app.get('/api/download/:id', function(req, res){          var id = req.params.id;        res.setheader("content-disposition", "attachment; filename=image.jpg");      request.get(images[id]).pipe(res);    });

now code works fine, after few hours of app running, endpoint hangs.

i monitoring memory usage of app, remains consistent, , other endpoints return json respond normal not if event loop somehow being blocked. there gotcha of kind missing when using request module pipe response? or there better solution achieve this?

i using express module.

you should add error listener on request because errors not passed in pipes. way, if request has error, close connection , you'll reason.

request .get(...) .on('error', function(err) {   console.log(err);   res.end(); }) .pipe(res)