Early flush with Node.js and Express [duplicate]

Question

How do I realise early flush (chuncked transfer encoding) with Express?

All examples I have found are dealing with the http module, where you can call the write() method of the response object and that way send data piece-wise.

The answer given and accepted in this is exactly what I am not looking for. — user3033490
it pretty much tells you the same thing as the actual answer you got. res is still the http module's stream, so you can just use a res.write to send a chunk, which it tells you. If this is not what you want, you'll need to update your post to explain you already tried res.write and didn't get the result you expected. Some code would help. — Mike 'Pomax' Kamermans

robertklep robertklep · Accepted Answer · 2014-01-05T21:08:19

You can still use write with Express:

app.get('/test', function(req, res) {
  var count     = 0;
  var interval  = setInterval(function() {
    if (count++ === 5) {
      clearInterval(interval);
      res.end();
      return;
    }
    res.write('This is line #' + count + '\n');
  }, 1000);
});

EDIT: for proper chunked transfer encoding, make sure the set the transfer-encoding header appropriately:

res.setHeader('transfer-encoding', 'chunked');

Early flush with Node.js and Express [duplicate]

1 Answers