Incorrect mimetype on windows, works fine on osx

• I have tried to upload the same file using two chrome browsers one on windows and the other on osx. The windows one shows mimetype as application/ocetet-stream and the osx one shows as application/zip. This is wierd and not sure the root cause.

Logs to give insights

• On windows

req.file.originalname : sample_input.zip
req.file.encoding : 7bit
req.file.size : 2020
req.file.mimetype : application/octet-stream

• on OSX

req.file.originalname : sample_input.zip
req.file.encoding : 7bit
req.file.size : 2020
req.file.mimetype : application/zip

My code

var storage = multer.diskStorage({
    destination: function(req, file, cb) {
        cb(null, Upload_measurements_dir)
    },
    filename: function(req, file, cb) {
        crypto.pseudoRandomBytes(16, function(err, raw) {
            cb(null, raw.toString('hex') + Date.now() + '.' + mime.extension(file.mimetype));
        });
    }
});
var upload = multer({
    storage: storage,
    limits: {
        fileSize: config.maxSize
    }
});


var UploadSettings = upload.single('data');

[LinusU]

createReadStream this needs to be create write stream 😃

[LinusU]

The new documentation is here: https://github.com/expressjs/multer/blob/c4b223efc4730611f7c6bfe9608bfd4048e3754d/README.md

😃