download method

Future<void> download(
  1. File file,
  2. {String filename}
)

Sends a download as a response.

Implementation

Future<void> download(File file, {String filename}) async {
  if (!isOpen) throw closed();

  headers["Content-Disposition"] =
      'attachment; filename="${filename ?? file.path}"';
  contentType = MediaType.parse(lookupMimeType(file.path));
  headers['content-length'] = file.lengthSync().toString();

  if (!isBuffered) {
    await file.openRead().cast<List<int>>().pipe(this);
  } else {
    buffer.add(file.readAsBytesSync());
    await close();
  }
}