File event not invoke

I have a simple route handler that accepts file uploads. However, the following code doesn’t work. The route gets called but file event is not fired. I’ve been checking my code against examples and couldn’t find what causing this. I appreciate much anyone could point out what causing this.

restify = require('restify'),
BusBoy  = require('busboy');
request         = require('request');
session = require('restify-session')({
    debug : false,
    ttl : 200           // Time to live in seconds
});
server = restify.createServer();
server.post('/files', uploadFile);    

server.listen(8082);
function uploadFile(req, res, next) {   
    var fileStream = new BusBoy({ headers: req.headers });                      
    req.pipe(fileStream);       
    fileStream.on('file', function(fieldname, file, filename, encoding, mimetype) {
        console.log('File [' + fieldname + ']: filename: ' + filename + ', encoding: ' + encoding + ', mimetype: ' + mimetype); 
        res.end();      
    });
}

[jgujgu]

A code snippet from above really helped me out. I’m sending an audiofile from Faraday as a multipart post.

var fileStream = new BusBoy({ headers: req.headers });                      
    req.pipe(fileStream);       
    fileStream.on('file', function(fieldname, file, filename, encoding, mimetype) {
        console.log('File [' + fieldname + ']: filename: ' + filename + ', encoding: ' + encoding + ', mimetype: ' + mimetype); 
        res.end();      
    });

And the Rails/Ruby:

url = 'http://localhost:8080/'
conn = Faraday.new(:url => url ) do |c|
    c.request :multipart
    c.request :url_encoded
    c.adapter :net_http
end
payload = { :file => Faraday::UploadIO.new(file_path, content_type) }
response = conn.post '', payload
json = JSON.parse response.body
puts response.body

[jgujgu]

Thank you for your advice, @mscdex. I ended up using the busboy “finish” listener quite successfully here. I changed the var names a bit from before.

var busboy = new Busboy({ headers: req.headers });
req.pipe(busboy);
busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
    audioFileName = filename + ".ogg";
    var saveTo = path.join("audio_temp", path.basename(audioFileName));
    file.pipe(fs.createWriteStream(saveTo));
});
busboy.on('finish', function() {
    //Finish it
}