parseRecord function

OncRpcRecord? parseRecord(Uint8List bytes)

Parse a single ONC RPC record from the head of bytes. Returns null when fewer than 4 header bytes have arrived, or when the declared payload length exceeds what's buffered.

Implementation

OncRpcRecord? parseRecord(Uint8List bytes) {
  if (bytes.length < 4) return null;
  final view = ByteData.sublistView(bytes);
  final marker = view.getUint32(0, Endian.big);
  final last = (marker & 0x80000000) != 0;
  final length = marker & 0x7FFFFFFF;
  if (bytes.length < 4 + length) return null;
  return OncRpcRecord(
    last: last,
    payload: Uint8List.fromList(bytes.sublist(4, 4 + length)),
    totalBytes: 4 + length,
  );
}