Function random_string

external/httplib.h:5023–5043

};

inline std::string random_string(size_t length) {
  static const char data[] =
      "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

  // std::random_device might actually be deterministic on some
  // platforms, but due to lack of support in the c++ standard library,
  // doing better requires either some ugly hacks or breaking portability.
  static std::random_device seed_gen;

  // Request 128 bits of entropy for initialization
  static std::seed_seq seed_sequence{seed_gen(), seed_gen(), seed_gen(),
                                     seed_gen()};

  static std::mt19937 engine(seed_sequence);

  std::string result;
  for (size_t i = 0; i < length; i++) {
    result += data[engine() % (sizeof(data) - 1)];
  }
  return result;
}

inline std::string make_multipart_data_boundary() {
  return "--cpp-httplib-multipart-data-" + detail::random_string(16);