function media(req,res){
console.log(req.query.image);
var collectionName = 'facebook';
var selector = MongoHelper.idSelector(req.query.image);
MongoHelper.findOne(selector, collectionName, function(err, image) {
var url_parts = url.parse(image.picture);
var options = {host: url_parts.hostname, path: url_parts.pathname};
http.get(options).on('response', function (response) {
res.writeHead(200,{'Content-Type':'image/JPEG'});
response.on('data', function (chunk) {
res.write(chunk);
});
response.on('end', function () {
res.end();
});
});
});
}
Here I got the solution. Instead of writing whole data at the end. Write it each time you get and end the response when you reach to the end of file. But still if anyone have better idea can write here.