NodeJS get a count of bytes of streaming file download
10,866
You can do it like this with request
library:
const request = require('request');
const fs = require('fs');
var downloaded = 0;
request.get(url)
.on('data', function(chunk){
downloaded += chunk.length;
console.log('downloaded', downloaded);
})
.pipe(fs.createWriteStream(fileName));
Also, you can check this link to learn how to do it without request
package.
Update #1 (Pure NodeJS solution)
var http = require('http');
var fs = require('fs');
var download = function(url, dest, cb) {
var file = fs.createWriteStream(dest);
var downloaded = 0;
var request = http.get(url, function(response) {
response.pipe(file);
response.on('data', function(chunk){
downloaded += chunk.length;
console.log(downloaded);
})
file.on('finish', function() {
file.close(cb);
});
});
}
Author by
user779159
Updated on June 13, 2022Comments
-
user779159 almost 2 years
In this code I stream a file from a url and save it to a file. Is there a way to also pipe it through something that will count the number of bytes piped? (Which would tell me the file size.)
request.stream(url) .pipe(outputFile)
Is there some library that would do this by piping the download through it, or a simple way for me to do it myself?
-
user779159 about 7 yearsThanks for the
request
example. Would you mind providing an example also of how to do it without the request package based on that link you provided? -
edwin over 3 years
file.on('finish'…
should befile.on('end'…
-
MortezaE over 3 yearsIn case of deflated pages, is there a way to count bytes before inflating? (any http module, or pure node)