finalize method

  1. @override
ByteStream finalize()

Freezes all mutable fields and returns a single-subscription ByteStream that will emit the request body.

Implementation

@override
http.ByteStream finalize() {
  final byteStream = super.finalize();

  if (onProgress == null) return byteStream;

  final total = contentLength;
  int bytes = 0;

  final t = StreamTransformer.fromHandlers(
    handleData: (List<int> data, EventSink<List<int>> sink) {
      bytes += data.length;

      if (onProgress != null) onProgress!(bytes, total);

      if (total >= bytes) sink.add(data);
    },
  );

  return http.ByteStream(byteStream.transform(t));
}