12 Forward declarations [fwd.decl]

12.1 Header <experimental/netfwd> synopsis [fwd.decl.synop]

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

  class execution_context;
  template<class T, class Executor>
    class executor_binder;
  template<class Executor>
    class executor_work_guard;
  class system_executor;
  class executor;
  template<class Executor>
    class strand;

  class io_context;

  template<class Clock> struct wait_traits;
  template<class Clock, class WaitTraits = wait_traits<Clock>>
    class basic_waitable_timer;
  using system_timer = basic_waitable_timer<chrono::system_clock>;
  using steady_timer = basic_waitable_timer<chrono::steady_clock>;
  using high_resolution_timer = basic_waitable_timer<chrono::high_resolution_clock>;

  template<class Protocol>
    class basic_socket;
  template<class Protocol>
    class basic_datagram_socket;
  template<class Protocol>
    class basic_stream_socket;
  template<class Protocol>
    class basic_socket_acceptor;
  template<class Protocol, class Clock = chrono::steady_clock,
    class WaitTraits = wait_traits<Clock>>
      class basic_socket_streambuf;
  template<class Protocol, class Clock = chrono::steady_clock,
    class WaitTraits = wait_traits<Clock>>
      class basic_socket_iostream;

  namespace ip {

    class address;
    class address_v4;
    class address_v6;
    template<class Address>
      class basic_address_iterator;
    using address_v4_iterator = basic_address_iterator<address_v4>;
    using address_v6_iterator = basic_address_iterator<address_v6>;
    template<class Address>
      class basic_address_range;
    using address_v4_range = basic_address_range<address_v4>;
    using address_v6_range = basic_address_range<address_v6>;
    class network_v4;
    class network_v6;
    template<class InternetProtocol>
      class basic_endpoint;
    template<class InternetProtocol>
      class basic_resolver_entry;
    template<class InternetProtocol>
      class basic_resolver_results;
    template<class InternetProtocol>
      class basic_resolver;
    class tcp;
    class udp;

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