gistfile1.js

var http = require('http');

app.get('/my/tn/upload/endpoint',function(req,res) {
  var depotRequest = http.createRequest(....)
  
  // handler for receving a chunk of file from web app
  req.on('data', function(chunk) {
      depotRequest.write(chunk); // send a chunk at a time to depot, see http://nodejs.org/api/http.html#http_request_write_chunk_encoding
  });
  req.on('end',function() {
    res.send(200);
  })
}