What's the "fast" way to read all the data from a socket?

all-buffered-io-ever.js

// Basically every data read ever looks something like this
// Can this be optimised using the callback advice from http://blog.trevnorris.com/2013/08/long-live-callbacks.html

function getData(callback) {
  http.get('http://localhost/whatever', function(err, res) {
    if (err) return callback(err);
    res.on('error', callback);
    
    var buffers = [], length = 0;
    res.on('data', function(chunk) {
      buffers.push(chunk);
      length += chunk.byteLength;
    })
    res.on('end', function() {
      callback(null, Buffer.concat(buffers, length));
    })
  })
}