Method indexToMask

include/records/RecHttp.h:70–74

  SessionProtocolSet() = default;

  uint32_t
  indexToMask(int idx) const
  {
    return 0 <= idx && idx < static_cast<int>(MAX) ? static_cast<uint32_t>(1) << idx : 0;
  }

  /// Mark the protocol at @a idx as present.
  void