app.js

app.post('/upload', function (req, res) {
  console.log("Context path1=" + __dirname);

  var busboy = new Busboy({ headers: req.headers });
  busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
    console.log("Context path=" + __dirname);
    var saveTo = path.join(__dirname +"/uploads" ,filename);
    console.log("inside upload get request111111::: "+filename);
    console.log('Uploading: ' + saveTo);
    file.pipe(fs.createWriteStream(saveTo));
    process.env.uploadedFileName =filename;
    console.log("inside upload get request222222::: "+process.env.uploadedFileName);
  });
  busboy.on('finish', function() {
    console.log('Upload complete');
    console.log("Finish in callback:::: "+process.env.uploadedFileName);
    res.writeHead(200, { 'Connection': 'close' });
    res.end("That's all folks!");
  });
  console.log("process.env.uploadedFileName in callback:::: "+process.env.uploadedFileName);
  return req.pipe(busboy);
  
});