Is it necessary to listen for the "error" event in a http.request response? #507

• Node.js Version: 6+
• OS: Any
• Scope (install, code, runtime, meta, other?): runtime
• Module (and version) (if relevant): http

In the example given for http.request on the http doc page, there's no error event listener on the response. Is there any scenario in which an error would be emitted on the response?

var req = http.request(options, (res) => {
  res.on('data', (chunk) => { /* ... */ });
  res.on('end', () => { /* ... */ });
  res.on('error', () => { /* Can this ever happen? */ });
});

req.on('error', /* (can definitely happen) */);