datagram_protocol.hpp

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//
// generic/datagram_protocol.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_GENERIC_DATAGRAM_PROTOCOL_HPP
#define ASIO_GENERIC_DATAGRAM_PROTOCOL_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"

#include <typeinfo>
#include "asio/basic_datagram_socket.hpp"
#include "asio/detail/socket_types.hpp"
#include "asio/detail/throw_exception.hpp"
#include "asio/generic/basic_endpoint.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
namespace generic {


class datagram_protocol
{
public:
  datagram_protocol(int address_family, int socket_protocol)
    : family_(address_family),
      protocol_(socket_protocol)
  {
  }


  template <typename Protocol>
  datagram_protocol(const Protocol& source_protocol)
    : family_(source_protocol.family()),
      protocol_(source_protocol.protocol())
  {
    if (source_protocol.type() != type())
    {
      std::bad_cast ex;
      asio::detail::throw_exception(ex);
    }
  }

  int type() const
  {
    return ASIO_OS_DEF(SOCK_DGRAM);
  }

  int protocol() const
  {
    return protocol_;
  }

  int family() const
  {
    return family_;
  }

  friend bool operator==(const datagram_protocol& p1,
      const datagram_protocol& p2)
  {
    return p1.family_ == p2.family_ && p1.protocol_ == p2.protocol_;
  }

  friend bool operator!=(const datagram_protocol& p1,
      const datagram_protocol& p2)
  {
    return !(p1 == p2);
  }

  typedef basic_endpoint<datagram_protocol> endpoint;

  typedef basic_datagram_socket<datagram_protocol> socket;

private:
  int family_;
  int protocol_;
};

} // namespace generic
} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_GENERIC_DATAGRAM_PROTOCOL_HPP