Can´t resend file with memoryStorage option

Hi!

I’ve an Express server which expects a file uploaded via form and then sends that file over to another API.

I tested it saving the file to disk and it works perfectly.

const multer = require('multer');
const fs = require('fs');
const request = require('request');

exports.upload = multer({ dest: 'uploads/' }).single('file');

exports.uploadFile = (req, res) => {
      const formData = {
        name: req.body.name,
        file: fs.createReadStream('uploads/' + req.file.filename)
      }

      const options = {
        url: `${path}/nodes`,
        formData
      }

      request.post(options, (err, response, body) => {
        if (err) return res.status(400).send({ msg: 'error', err });
        return res.status(201).send(response.body);
      });
    })
    .catch(err => res.status(400).send({ msg: 'error', err }));
}

Now, as this is just an intermediate step (for authentication purposes), I don´t really need to save the file to disk, I want to keep it in memory and send it to the other API. So I changed my code:

exports.upload = multer({ storage: multer.memoryStorage() }).single('file');

exports.uploadFile = (req, res) => {
      const formData = {
        name: req.body.name,
        file: req.file.buffer
      }

      const options = {
        url: `${path}/nodes`,
        formData
      }

      request.post(options, (err, response, body) => {
        if (err) return res.status(400).send({ msg: 'error', err });
        return res.status(201).send(response.body);
      });
    })
    .catch(err => res.status(400).send({ msg: 'error', err }));
}

But this is not working. I tried many things, encode it to base64 before sending it, create a bufferStream with new stream.PassThrough() but nothing seems to work. Am I doing anything wrong here?

Thanks

[stringbeans]

@davidanaya did you ever find solution for this? im doing a very similar thing except using FormData to “forward” the upload to a different api. It works perfectly fine if I use LocalStorage but when using MemoryStorage and using the file.buffer it doesnt seem to work

[jonathangaldino]

I’m having the same issue. Did you find a solution?