ceph/src/boost/boost/asio/generic/raw_protocol.hpp

   1 //
   2 // generic/raw_protocol.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_GENERIC_RAW_PROTOCOL_HPP
  12 #define BOOST_ASIO_GENERIC_RAW_PROTOCOL_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19
  20 #include <typeinfo>
  21 #include <boost/asio/basic_raw_socket.hpp>
  22 #include <boost/asio/detail/socket_types.hpp>
  23 #include <boost/asio/detail/throw_exception.hpp>
  24 #include <boost/asio/generic/basic_endpoint.hpp>
  25
  26 #include <boost/asio/detail/push_options.hpp>
  27
  28 namespace boost {
  29 namespace asio {
  30 namespace generic {
  31
  32 /// Encapsulates the flags needed for a generic raw socket.
  33 /**
  34  * The boost::asio::generic::raw_protocol class contains flags necessary for
  35  * raw sockets of any address family and protocol.
  36  *
  37  * @par Examples
  38  * Constructing using a native address family and socket protocol:
  39  * @code raw_protocol p(AF_INET, IPPROTO_ICMP); @endcode
  40  * Constructing from a specific protocol type:
  41  * @code raw_protocol p(boost::asio::ip::icmp::v4()); @endcode
  42  *
  43  * @par Thread Safety
  44  * @e Distinct @e objects: Safe.@n
  45  * @e Shared @e objects: Safe.
  46  *
  47  * @par Concepts:
  48  * Protocol.
  49  */
  50 class raw_protocol
  51 {
  52 public:
  53   /// Construct a protocol object for a specific address family and protocol.
  54   raw_protocol(int address_family, int socket_protocol)
  55     : family_(address_family),
  56       protocol_(socket_protocol)
  57   {
  58   }
  59
  60   /// Construct a generic protocol object from a specific protocol.
  61   /**
  62    * @throws @c bad_cast Thrown if the source protocol is not raw-oriented.
  63    */
  64   template <typename Protocol>
  65   raw_protocol(const Protocol& source_protocol)
  66     : family_(source_protocol.family()),
  67       protocol_(source_protocol.protocol())
  68   {
  69     if (source_protocol.type() != type())
  70     {
  71       std::bad_cast ex;
  72       boost::asio::detail::throw_exception(ex);
  73     }
  74   }
  75
  76   /// Obtain an identifier for the type of the protocol.
  77   int type() const
  78   {
  79     return BOOST_ASIO_OS_DEF(SOCK_RAW);
  80   }
  81
  82   /// Obtain an identifier for the protocol.
  83   int protocol() const
  84   {
  85     return protocol_;
  86   }
  87
  88   /// Obtain an identifier for the protocol family.
  89   int family() const
  90   {
  91     return family_;
  92   }
  93
  94   /// Compare two protocols for equality.
  95   friend bool operator==(const raw_protocol& p1, const raw_protocol& p2)
  96   {
  97     return p1.family_ == p2.family_ && p1.protocol_ == p2.protocol_;
  98   }
  99
 100   /// Compare two protocols for inequality.
 101   friend bool operator!=(const raw_protocol& p1, const raw_protocol& p2)
 102   {
 103     return !(p1 == p2);
 104   }
 105
 106   /// The type of an endpoint.
 107   typedef basic_endpoint<raw_protocol> endpoint;
 108
 109   /// The generic socket type.
 110   typedef basic_raw_socket<raw_protocol> socket;
 111
 112 private:
 113   int family_;
 114   int protocol_;
 115 };
 116
 117 } // namespace generic
 118 } // namespace asio
 119 } // namespace boost
 120
 121 #include <boost/asio/detail/pop_options.hpp>
 122
 123 #endif // BOOST_ASIO_GENERIC_RAW_PROTOCOL_HPP