I am currently reaching out to a URL to grab a file, the GET request is a responseType: 'stream'

In my API, I need to read this “stream” into some kind of object that I can use later, but I need to access the files Headers, and be able to also access the full data (to write it out or save it). These are PDF files if that makes a difference, but I’m just not sure what Type I should be using for such a thing. Here’s a sample of what I have, but the headers are not correct:

        private async Task<(byte[]?, HttpContentHeaders)> ReadFileData(string url)
        {
            byte[]? fileData = null;
            HttpContentHeaders headers = null;
            using (var response = await _httpClient.GetAsync(url, HttpCompletionOption.ResponseHeadersRead))
            {
                response.EnsureSuccessStatusCode();

                using (var stream = await response.Content.ReadAsStreamAsync())
                using (var memoryStream = new MemoryStream())
                {
                    await stream.CopyToAsync(memoryStream);
                    fileData = memoryStream.ToArray();

                    ByteArrayContent byteContent = new ByteArrayContent(fileData);
                    MultipartFormDataContent form = new MultipartFormDataContent();
                    form.Add(byteContent, "files", "files");
                    headers = form.Headers;
                }
            }

            return (fileData, headers);
        }