Nodejs download image - node.js

Question

I'm trying to download an image from my server using request.
I've managed to download something but i get more data than the image.
function _download(uri, save_as, destination) {
let options = {
uri: uri,
timeout: 100000,
followAllRedirects: true
};
return new Promise(( _resolve,_reject) => {
let ext, filename, bar, total, downloaded, req;
req = request(options).on('response', (resp) => {
if (resp.statusCode === 200){
ext = _getFileType(resp.headers['content-type']);
filename = destination+'/'+save_as+ext;
var stream = fs.createWriteStream(filename)
resp.pipe(stream).on('error',function(err){
_reject(err);
}).on('finish',function(){
_resolve(filename);
});
} else {
_reject("unable to download image %s",uri);
}
}).on('error', function(err) {
console.log(err)
_reject(err);
})
});
}
My original url is in form of https://www.test.com/image/original/12345, my server than redirects with a 301 status to my s3 bucket where image is stored.
Unfortunately due to the url of the image i have to wait that for the response header content type to determinate what kind of image it's and use it to pipe the image.
Everything works quite as expected... but i get more data than what is stored in s3.
Does anyone have any suggestion ?

Answer 1

please refer to the link below
var fs = require('fs'),
request = require('request');
var download = function(uri, filename, callback){
request.head(uri, function(err, res, body){
console.log('content-type:', res.headers['content-type']);
console.log('content-length:', res.headers['content-length']);
request(uri).pipe(fs.createWriteStream(filename)).on('close', callback);
});
};
download('https://www.google.com/images/srpr/logo3w.png', 'google.png', function(){
console.log('done');
});
please visit this link
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