21 Internet protocol [internet]

The class network_v6 provides the ability to use and manipulate IPv6 network addresses.

namespace std {
namespace experimental {
namespace net {
inline namespace v1 {
namespace ip {

  class network_v6
  {
  public:
    // [internet.network.v6.cons], constructors:
    constexpr network_v6() noexcept;
    constexpr network_v6(const address_v6& addr, int prefix_len);

    // [internet.network.v6.members], members:
    constexpr address_v6 address() const noexcept;
    constexpr int prefix_length() const noexcept;
    constexpr address_v6 network() const noexcept;
    address_v6_range hosts() const noexcept;
    constexpr network_v6 canonical() const noexcept;
    constexpr bool is_host() const noexcept;
    constexpr bool is_subnet_of(const network_v6& other) const noexcept;
    template<class Allocator = allocator<char>>
      basic_string<char, char_traits<char>, Allocator>
        to_string(const Allocator& a = Allocator()) const;
  };

  // [internet.network.v6.comparisons], network_v6 comparisons:
  constexpr bool operator==(const network_v6& a, const network_v6& b) noexcept;
  constexpr bool operator!=(const network_v6& a, const network_v6& b) noexcept;

  // [internet.network.v6.creation], network_v6 creation:
  constexpr network_v6 make_network_v6(const address_v6& addr, int prefix_len);
  network_v6 make_network_v6(const char* str);
  network_v6 make_network_v6(const char* str, error_code& ec) noexcept;
  network_v6 make_network_v6(const string& str);
  network_v6 make_network_v6(const string& str, error_code& ec) noexcept;
  network_v6 make_network_v6(string_view str);
  network_v6 make_network_v6(string_view str, error_code& ec) noexcept;

  // [internet.network.v6.io], network_v6 I/O:
  template<class CharT, class Traits>
    basic_ostream<CharT, Traits>& operator<<(
      basic_ostream<CharT, Traits>& os, const network_v6& net);

} // namespace ip
} // inline namespace v1
} // namespace net
} // namespace experimental
} // namespace std

network_v6 satisfies the requirements for Destructible (C++ 2014 [destructible]), CopyConstructible (C++ 2014 [copyconstructible]), and CopyAssignable (C++ 2014 [copyassignable]).