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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
commit0aa6201a490bfabc0ae021ceb9f1fb0f46727c5d (patch)
treea71d934d8151dd43e7c16555fef17fd749c5da70 /lib/asio/ip/basic_resolver_results.hpp
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-//
-// ip/basic_resolver_results.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_BASIC_RESOLVER_RESULTS_HPP
-#define ASIO_IP_BASIC_RESOLVER_RESULTS_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-#include <cstddef>
-#include <cstring>
-#include "asio/detail/socket_ops.hpp"
-#include "asio/detail/socket_types.hpp"
-#include "asio/ip/basic_resolver_iterator.hpp"
-
-#if defined(ASIO_WINDOWS_RUNTIME)
-# include "asio/detail/winrt_utils.hpp"
-#endif // defined(ASIO_WINDOWS_RUNTIME)
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace ip {
-
-/// A range of entries produced by a resolver.
-/**
- * The asio::ip::basic_resolver_results class template is used to define
- * a range over the results returned by a resolver.
- *
- * The iterator's value_type, obtained when a results iterator is dereferenced,
- * is: @code const basic_resolver_entry<InternetProtocol> @endcode
- *
- * @note For backward compatibility, basic_resolver_results is derived from
- * basic_resolver_iterator. This derivation is deprecated.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe.
- */
-template <typename InternetProtocol>
-class basic_resolver_results
-#if !defined(ASIO_NO_DEPRECATED)
- : public basic_resolver_iterator<InternetProtocol>
-#else // !defined(ASIO_NO_DEPRECATED)
- : private basic_resolver_iterator<InternetProtocol>
-#endif // !defined(ASIO_NO_DEPRECATED)
-{
-public:
- /// The protocol type associated with the results.
- typedef InternetProtocol protocol_type;
-
- /// The endpoint type associated with the results.
- typedef typename protocol_type::endpoint endpoint_type;
-
- /// The type of a value in the results range.
- typedef basic_resolver_entry<protocol_type> value_type;
-
- /// The type of a const reference to a value in the range.
- typedef const value_type& const_reference;
-
- /// The type of a non-const reference to a value in the range.
- typedef value_type& reference;
-
- /// The type of an iterator into the range.
- typedef basic_resolver_iterator<protocol_type> const_iterator;
-
- /// The type of an iterator into the range.
- typedef const_iterator iterator;
-
- /// Type used to represent the distance between two iterators in the range.
- typedef std::ptrdiff_t difference_type;
-
- /// Type used to represent a count of the elements in the range.
- typedef std::size_t size_type;
-
- /// Default constructor creates an empty range.
- basic_resolver_results()
- {
- }
-
- /// Copy constructor.
- basic_resolver_results(const basic_resolver_results& other)
- : basic_resolver_iterator<InternetProtocol>(other)
- {
- }
-
-#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
- /// Move constructor.
- basic_resolver_results(basic_resolver_results&& other)
- : basic_resolver_iterator<InternetProtocol>(
- ASIO_MOVE_CAST(basic_resolver_results)(other))
- {
- }
-#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
-
- /// Assignment operator.
- basic_resolver_results& operator=(const basic_resolver_results& other)
- {
- basic_resolver_iterator<InternetProtocol>::operator=(other);
- return *this;
- }
-
-#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
- /// Move-assignment operator.
- basic_resolver_results& operator=(basic_resolver_results&& other)
- {
- basic_resolver_iterator<InternetProtocol>::operator=(
- ASIO_MOVE_CAST(basic_resolver_results)(other));
- return *this;
- }
-#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
-
-#if !defined(GENERATING_DOCUMENTATION)
- // Create results from an addrinfo list returned by getaddrinfo.
- static basic_resolver_results create(
- asio::detail::addrinfo_type* address_info,
- const std::string& host_name, const std::string& service_name)
- {
- basic_resolver_results results;
- if (!address_info)
- return results;
-
- std::string actual_host_name = host_name;
- if (address_info->ai_canonname)
- actual_host_name = address_info->ai_canonname;
-
- results.values_.reset(new values_type);
-
- while (address_info)
- {
- if (address_info->ai_family == ASIO_OS_DEF(AF_INET)
- || address_info->ai_family == ASIO_OS_DEF(AF_INET6))
- {
- using namespace std; // For memcpy.
- typename InternetProtocol::endpoint endpoint;
- endpoint.resize(static_cast<std::size_t>(address_info->ai_addrlen));
- memcpy(endpoint.data(), address_info->ai_addr,
- address_info->ai_addrlen);
- results.values_->push_back(
- basic_resolver_entry<InternetProtocol>(endpoint,
- actual_host_name, service_name));
- }
- address_info = address_info->ai_next;
- }
-
- return results;
- }
-
- // Create results from an endpoint, host name and service name.
- static basic_resolver_results create(const endpoint_type& endpoint,
- const std::string& host_name, const std::string& service_name)
- {
- basic_resolver_results results;
- results.values_.reset(new values_type);
- results.values_->push_back(
- basic_resolver_entry<InternetProtocol>(
- endpoint, host_name, service_name));
- return results;
- }
-
- // Create results from a sequence of endpoints, host and service name.
- template <typename EndpointIterator>
- static basic_resolver_results create(
- EndpointIterator begin, EndpointIterator end,
- const std::string& host_name, const std::string& service_name)
- {
- basic_resolver_results results;
- if (begin != end)
- {
- results.values_.reset(new values_type);
- for (EndpointIterator ep_iter = begin; ep_iter != end; ++ep_iter)
- {
- results.values_->push_back(
- basic_resolver_entry<InternetProtocol>(
- *ep_iter, host_name, service_name));
- }
- }
- return results;
- }
-
-# if defined(ASIO_WINDOWS_RUNTIME)
- // Create results from a Windows Runtime list of EndpointPair objects.
- static basic_resolver_results create(
- Windows::Foundation::Collections::IVectorView<
- Windows::Networking::EndpointPair^>^ endpoints,
- const asio::detail::addrinfo_type& hints,
- const std::string& host_name, const std::string& service_name)
- {
- basic_resolver_results results;
- if (endpoints->Size)
- {
- results.values_.reset(new values_type);
- for (unsigned int i = 0; i < endpoints->Size; ++i)
- {
- auto pair = endpoints->GetAt(i);
-
- if (hints.ai_family == ASIO_OS_DEF(AF_INET)
- && pair->RemoteHostName->Type
- != Windows::Networking::HostNameType::Ipv4)
- continue;
-
- if (hints.ai_family == ASIO_OS_DEF(AF_INET6)
- && pair->RemoteHostName->Type
- != Windows::Networking::HostNameType::Ipv6)
- continue;
-
- results.values_->push_back(
- basic_resolver_entry<InternetProtocol>(
- typename InternetProtocol::endpoint(
- ip::make_address(
- asio::detail::winrt_utils::string(
- pair->RemoteHostName->CanonicalName)),
- asio::detail::winrt_utils::integer(
- pair->RemoteServiceName)),
- host_name, service_name));
- }
- }
- return results;
- }
-# endif // defined(ASIO_WINDOWS_RUNTIME)
-#endif // !defined(GENERATING_DOCUMENTATION)
-
- /// Get the number of entries in the results range.
- size_type size() const ASIO_NOEXCEPT
- {
- return this->values_->size();
- }
-
- /// Get the maximum number of entries permitted in a results range.
- size_type max_size() const ASIO_NOEXCEPT
- {
- return this->values_->max_size();
- }
-
- /// Determine whether the results range is empty.
- bool empty() const ASIO_NOEXCEPT
- {
- return this->values_->empty();
- }
-
- /// Obtain a begin iterator for the results range.
- const_iterator begin() const
- {
- basic_resolver_results tmp(*this);
- tmp.index_ = 0;
- return tmp;
- }
-
- /// Obtain an end iterator for the results range.
- const_iterator end() const
- {
- return const_iterator();
- }
-
- /// Obtain a begin iterator for the results range.
- const_iterator cbegin() const
- {
- return begin();
- }
-
- /// Obtain an end iterator for the results range.
- const_iterator cend() const
- {
- return end();
- }
-
- /// Swap the results range with another.
- void swap(basic_resolver_results& that) ASIO_NOEXCEPT
- {
- if (this != &that)
- {
- this->values_.swap(that.values_);
- std::size_t index = this->index_;
- this->index_ = that.index_;
- that.index_ = index;
- }
- }
-
- /// Test two iterators for equality.
- friend bool operator==(const basic_resolver_results& a,
- const basic_resolver_results& b)
- {
- return a.equal(b);
- }
-
- /// Test two iterators for inequality.
- friend bool operator!=(const basic_resolver_results& a,
- const basic_resolver_results& b)
- {
- return !a.equal(b);
- }
-
-private:
- typedef std::vector<basic_resolver_entry<InternetProtocol> > values_type;
-};
-
-} // namespace ip
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // ASIO_IP_BASIC_RESOLVER_RESULTS_HPP