Question

ORIGINAL

I’m having problems to upload a file (image) to Dropbox from Node.js using the official dropbox.js.
I want to upload a picture that I have in another server. For example with the dropbpox icon (www.dropbox.com/static/images/new_logo.png).

client.writeFile(file, 'www.dropbox.com/static/images/new_logo.png', function(error, stat) {
 if (error) {
  return es.send(error.status);  // Something went wrong.
 }

 res.send("File saved as revision " + stat.revisionTag);
});

I know that this only creates a text file with the url, but how I can upload the picture to Dropbox?
I also try to download the file using http.get and then upload this to dropbox but it doesn’t work.

Thanks.

UPDATE WITH MORE INFO

First I download the image from a remote url with this code:

var request = http.get(options, function(res){
        var imagedata = ''
        res.setEncoding('binary')

        res.on('data', function(chunk){
            imagedata += chunk
        }) 

        res.on('end', function(){ 
            console.log("Image downloaded!");

            fs.writeFile(local, imagedata, 'binary', function(err){
              if (err) throw err
              console.log('File saved.')
            })
        })
    })

The file is saved correctly.
Then I trie to things:

Sending the ‘imagedata’ to Dropbox:

  console.log("Image downloaded!");

            client.writeFile(file, imagedata, function(error, stat) {
                if (error) {
                    return response.send(error.status);  // Something went wrong.
                }

                response.send("File saved as revision " + stat.revisionTag);
            });

And something is uploaded to Dropbox but it’s nothing useful.

Then I also tried to read the file from disc and then send it to Dropbox but it doesn’t work neither:

fs.readFile(file, function(err, data) {

Answer 1

Use dropbox-js 0.9.1-beta1 or above to upload binary files from node.js. You need to pass it Buffer or ArrayBuffer instances. Try this code:

var req = http.get(options, function(res) {
  var chunks = [];

  res.on('data', function(chunk) {
    chunks.push(chunk);
  });

  res.on('end', function() {
    console.log("Image downloaded!");

    var imageData = Buffer.concat(chunks);
    client.writeFile(file, imageData, function(error, stat) {
      if (error) {
        return response.send(error.status);
      }
      response.send("File saved as revision " + stat.revisionTag);
    });
  });
});

“`

Original answer: the dropbox-js README mentions that binary files don’t work in node.js just yet.