headers vs _headers

[bdefore]

app.use((req, res) => {
  res.set('Logged-In', true);
  console.log('headers', res.headers);
  console.log('headers', res._headers);
}

is it expected behavior that res.headers does not show current state? even chaining middleware has the problem.

[dougwilson]

Hi @bdefore , we rely on the Node.js HTTP API and they do not provide any API (that's not private) to access the headers on the response object (https://nodejs.org/api/http.html#http_class_http_serverresponse). I don't think we have res.headers or res._headers in our documentation, unless I'm' mistaken somehow :)

Node.js is currently considering adding an API for this (that's not private) over at nodejs/node#1873 if you want to chime in :)

[bdefore]

thanks for the follow up @dougwilson ... it's a bit of a shame but good to hear you know of it.