1 // 2 // ip/udp.hpp 3 // ~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2019 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_IP_UDP_HPP 12 #define BOOST_ASIO_IP_UDP_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 #include <boost/asio/basic_datagram_socket.hpp> 20 #include <boost/asio/detail/socket_types.hpp> 21 #include <boost/asio/ip/basic_endpoint.hpp> 22 #include <boost/asio/ip/basic_resolver.hpp> 23 #include <boost/asio/ip/basic_resolver_iterator.hpp> 24 #include <boost/asio/ip/basic_resolver_query.hpp> 25 26 #include <boost/asio/detail/push_options.hpp> 27 28 namespace boost { 29 namespace asio { 30 namespace ip { 31 32 /// Encapsulates the flags needed for UDP. 33 /** 34 * The boost::asio::ip::udp class contains flags necessary for UDP sockets. 35 * 36 * @par Thread Safety 37 * @e Distinct @e objects: Safe.@n 38 * @e Shared @e objects: Safe. 39 * 40 * @par Concepts: 41 * Protocol, InternetProtocol. 42 */ 43 class udp 44 { 45 public: 46 /// The type of a UDP endpoint. 47 typedef basic_endpoint<udp> endpoint; 48 49 /// Construct to represent the IPv4 UDP protocol. v4()50 static udp v4() 51 { 52 return udp(BOOST_ASIO_OS_DEF(AF_INET)); 53 } 54 55 /// Construct to represent the IPv6 UDP protocol. v6()56 static udp v6() 57 { 58 return udp(BOOST_ASIO_OS_DEF(AF_INET6)); 59 } 60 61 /// Obtain an identifier for the type of the protocol. type() const62 int type() const 63 { 64 return BOOST_ASIO_OS_DEF(SOCK_DGRAM); 65 } 66 67 /// Obtain an identifier for the protocol. protocol() const68 int protocol() const 69 { 70 return BOOST_ASIO_OS_DEF(IPPROTO_UDP); 71 } 72 73 /// Obtain an identifier for the protocol family. family() const74 int family() const 75 { 76 return family_; 77 } 78 79 /// The UDP socket type. 80 typedef basic_datagram_socket<udp> socket; 81 82 /// The UDP resolver type. 83 typedef basic_resolver<udp> resolver; 84 85 /// Compare two protocols for equality. operator ==(const udp & p1,const udp & p2)86 friend bool operator==(const udp& p1, const udp& p2) 87 { 88 return p1.family_ == p2.family_; 89 } 90 91 /// Compare two protocols for inequality. operator !=(const udp & p1,const udp & p2)92 friend bool operator!=(const udp& p1, const udp& p2) 93 { 94 return p1.family_ != p2.family_; 95 } 96 97 private: 98 // Construct with a specific family. udp(int protocol_family)99 explicit udp(int protocol_family) 100 : family_(protocol_family) 101 { 102 } 103 104 int family_; 105 }; 106 107 } // namespace ip 108 } // namespace asio 109 } // namespace boost 110 111 #include <boost/asio/detail/pop_options.hpp> 112 113 #endif // BOOST_ASIO_IP_UDP_HPP 114