V3 event, triggered when headers are sent by the remote server

[1nstinct]

I am looking for the way to intercept headers sent by AWS servers while streaming file by GetObjectCommand().
What I am trying to do is to replace the code built around V2 lib that is developed with help of this event handler https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Request.html#httpHeaders-event

const command = new GetObjectCommand({
  Bucket
  Key,
});
const item = await s3Client.send(command);
item.Body
  .on('httpHeaders', (code, headers) => {
    // this doesn't work
    if (code < 300) {
      res.status(code);
      res.set(_.pick(
        headers,
        'content-type',
        'etag',
        'last-modified',
        'accept-ranges',
        'content-range',
        'content-length',
        'content-disposition',
        'access-control-allow-origin'
      ));
    }
  })
  .pipe(res);

[1nstinct]

Ok figured out the way how to pick only required headers from the request

const client = req.s3Client;
const response = await client.send(command);
const headersToSet = {
  'ContentType': 'content-type',
  'ETag': 'etag',
  'LastModified': 'last-modified',
  'AcceptRanges': 'accept-ranges',
  'ContentRange': 'content-range',
  'ContentLength': 'content-length',
  'ContentDisposition': 'content-disposition',
  'AccessControlAllowOrigin': 'access-control-allow-origin',
};
const exposedHeaders = _.pick(
  response,
  Object.keys(headersToSet)
);
res.set(_.reduce(exposedHeaders, (result, value, key) => {
  result[headersToSet[key]] = value;
  return result;
}, {}));

response.Body.on('end', () => {
  client.destroy();
});
response.Body.pipe(res);

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.