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diff --git a/lib/asio/ip/address_v4.hpp b/lib/asio/ip/address_v4.hpp
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-//
-// ip/address_v4.hpp
-// ~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 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_IP_ADDRESS_V4_HPP
-#define ASIO_IP_ADDRESS_V4_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <string>
-#include "asio/detail/array.hpp"
-#include "asio/detail/cstdint.hpp"
-#include "asio/detail/socket_types.hpp"
-#include "asio/detail/string_view.hpp"
-#include "asio/detail/winsock_init.hpp"
-#include "asio/error_code.hpp"
-
-#if !defined(ASIO_NO_IOSTREAM)
-# include <iosfwd>
-#endif // !defined(ASIO_NO_IOSTREAM)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace ip {
-
-/// Implements IP version 4 style addresses.
-/**
- * The asio::ip::address_v4 class provides the ability to use and
- * manipulate IP version 4 addresses.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe.
- */
-class address_v4
-{
-public:
- /// The type used to represent an address as an unsigned integer.
- typedef uint_least32_t uint_type;
-
- /// The type used to represent an address as an array of bytes.
- /**
- * @note This type is defined in terms of the C++0x template @c std::array
- * when it is available. Otherwise, it uses @c boost:array.
- */
-#if defined(GENERATING_DOCUMENTATION)
- typedef array<unsigned char, 4> bytes_type;
-#else
- typedef asio::detail::array<unsigned char, 4> bytes_type;
-#endif
-
- /// Default constructor.
- address_v4()
- {
- addr_.s_addr = 0;
- }
-
- /// Construct an address from raw bytes.
- ASIO_DECL explicit address_v4(const bytes_type& bytes);
-
- /// Construct an address from an unsigned integer in host byte order.
- ASIO_DECL explicit address_v4(uint_type addr);
-
- /// Copy constructor.
- address_v4(const address_v4& other)
- : addr_(other.addr_)
- {
- }
-
-#if defined(ASIO_HAS_MOVE)
- /// Move constructor.
- address_v4(address_v4&& other)
- : addr_(other.addr_)
- {
- }
-#endif // defined(ASIO_HAS_MOVE)
-
- /// Assign from another address.
- address_v4& operator=(const address_v4& other)
- {
- addr_ = other.addr_;
- return *this;
- }
-
-#if defined(ASIO_HAS_MOVE)
- /// Move-assign from another address.
- address_v4& operator=(address_v4&& other)
- {
- addr_ = other.addr_;
- return *this;
- }
-#endif // defined(ASIO_HAS_MOVE)
-
- /// Get the address in bytes, in network byte order.
- ASIO_DECL bytes_type to_bytes() const;
-
- /// Get the address as an unsigned integer in host byte order
- ASIO_DECL uint_type to_uint() const;
-
-#if !defined(ASIO_NO_DEPRECATED)
- /// Get the address as an unsigned long in host byte order
- ASIO_DECL unsigned long to_ulong() const;
-#endif // !defined(ASIO_NO_DEPRECATED)
-
- /// Get the address as a string in dotted decimal format.
- ASIO_DECL std::string to_string() const;
-
-#if !defined(ASIO_NO_DEPRECATED)
- /// (Deprecated: Use other overload.) Get the address as a string in dotted
- /// decimal format.
- ASIO_DECL std::string to_string(asio::error_code& ec) const;
-
- /// (Deprecated: Use make_address_v4().) Create an address from an IP address
- /// string in dotted decimal form.
- static address_v4 from_string(const char* str);
-
- /// (Deprecated: Use make_address_v4().) Create an address from an IP address
- /// string in dotted decimal form.
- static address_v4 from_string(
- const char* str, asio::error_code& ec);
-
- /// (Deprecated: Use make_address_v4().) Create an address from an IP address
- /// string in dotted decimal form.
- static address_v4 from_string(const std::string& str);
-
- /// (Deprecated: Use make_address_v4().) Create an address from an IP address
- /// string in dotted decimal form.
- static address_v4 from_string(
- const std::string& str, asio::error_code& ec);
-#endif // !defined(ASIO_NO_DEPRECATED)
-
- /// Determine whether the address is a loopback address.
- ASIO_DECL bool is_loopback() const;
-
- /// Determine whether the address is unspecified.
- ASIO_DECL bool is_unspecified() const;
-
-#if !defined(ASIO_NO_DEPRECATED)
- /// (Deprecated: Use network_v4 class.) Determine whether the address is a
- /// class A address.
- ASIO_DECL bool is_class_a() const;
-
- /// (Deprecated: Use network_v4 class.) Determine whether the address is a
- /// class B address.
- ASIO_DECL bool is_class_b() const;
-
- /// (Deprecated: Use network_v4 class.) Determine whether the address is a
- /// class C address.
- ASIO_DECL bool is_class_c() const;
-#endif // !defined(ASIO_NO_DEPRECATED)
-
- /// Determine whether the address is a multicast address.
- ASIO_DECL bool is_multicast() const;
-
- /// Compare two addresses for equality.
- friend bool operator==(const address_v4& a1, const address_v4& a2)
- {
- return a1.addr_.s_addr == a2.addr_.s_addr;
- }
-
- /// Compare two addresses for inequality.
- friend bool operator!=(const address_v4& a1, const address_v4& a2)
- {
- return a1.addr_.s_addr != a2.addr_.s_addr;
- }
-
- /// Compare addresses for ordering.
- friend bool operator<(const address_v4& a1, const address_v4& a2)
- {
- return a1.to_uint() < a2.to_uint();
- }
-
- /// Compare addresses for ordering.
- friend bool operator>(const address_v4& a1, const address_v4& a2)
- {
- return a1.to_uint() > a2.to_uint();
- }
-
- /// Compare addresses for ordering.
- friend bool operator<=(const address_v4& a1, const address_v4& a2)
- {
- return a1.to_uint() <= a2.to_uint();
- }
-
- /// Compare addresses for ordering.
- friend bool operator>=(const address_v4& a1, const address_v4& a2)
- {
- return a1.to_uint() >= a2.to_uint();
- }
-
- /// Obtain an address object that represents any address.
- static address_v4 any()
- {
- return address_v4();
- }
-
- /// Obtain an address object that represents the loopback address.
- static address_v4 loopback()
- {
- return address_v4(0x7F000001);
- }
-
- /// Obtain an address object that represents the broadcast address.
- static address_v4 broadcast()
- {
- return address_v4(0xFFFFFFFF);
- }
-
-#if !defined(ASIO_NO_DEPRECATED)
- /// (Deprecated: Use network_v4 class.) Obtain an address object that
- /// represents the broadcast address that corresponds to the specified
- /// address and netmask.
- ASIO_DECL static address_v4 broadcast(
- const address_v4& addr, const address_v4& mask);
-
- /// (Deprecated: Use network_v4 class.) Obtain the netmask that corresponds
- /// to the address, based on its address class.
- ASIO_DECL static address_v4 netmask(const address_v4& addr);
-#endif // !defined(ASIO_NO_DEPRECATED)
-
-private:
- // The underlying IPv4 address.
- asio::detail::in4_addr_type addr_;
-};
-
-/// Create an IPv4 address from raw bytes in network order.
-/**
- * @relates address_v4
- */
-inline address_v4 make_address_v4(const address_v4::bytes_type& bytes)
-{
- return address_v4(bytes);
-}
-
-/// Create an IPv4 address from an unsigned integer in host byte order.
-/**
- * @relates address_v4
- */
-inline address_v4 make_address_v4(address_v4::uint_type addr)
-{
- return address_v4(addr);
-}
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(const char* str);
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(
- const char* str, asio::error_code& ec);
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(const std::string& str);
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(
- const std::string& str, asio::error_code& ec);
-
-#if defined(ASIO_HAS_STRING_VIEW) \
- || defined(GENERATING_DOCUMENTATION)
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(string_view str);
-
-/// Create an IPv4 address from an IP address string in dotted decimal form.
-/**
- * @relates address_v4
- */
-ASIO_DECL address_v4 make_address_v4(
- string_view str, asio::error_code& ec);
-
-#endif // defined(ASIO_HAS_STRING_VIEW)
- // || defined(GENERATING_DOCUMENTATION)
-
-#if !defined(ASIO_NO_IOSTREAM)
-
-/// Output an address as a string.
-/**
- * Used to output a human-readable string for a specified address.
- *
- * @param os The output stream to which the string will be written.
- *
- * @param addr The address to be written.
- *
- * @return The output stream.
- *
- * @relates asio::ip::address_v4
- */
-template <typename Elem, typename Traits>
-std::basic_ostream<Elem, Traits>& operator<<(
- std::basic_ostream<Elem, Traits>& os, const address_v4& addr);
-
-#endif // !defined(ASIO_NO_IOSTREAM)
-
-} // namespace ip
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#include "asio/ip/impl/address_v4.hpp"
-#if defined(ASIO_HEADER_ONLY)
-# include "asio/ip/impl/address_v4.ipp"
-#endif // defined(ASIO_HEADER_ONLY)
-
-#endif // ASIO_IP_ADDRESS_V4_HPP