newHubFrameId function

String newHubFrameId()

Opaque unique frame id, uuid-v4 shaped.

Implementation

String newHubFrameId() {
  final b = List<int>.generate(16, (_) => _random.nextInt(256));
  b[6] = (b[6] & 0x0f) | 0x40;
  b[8] = (b[8] & 0x3f) | 0x80;
  final h = b.map((v) => v.toRadixString(16).padLeft(2, '0')).join();
  return '${h.substring(0, 8)}-${h.substring(8, 12)}-${h.substring(12, 16)}-'
      '${h.substring(16, 20)}-${h.substring(20)}';
}