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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef Resolver_h__
#define Resolver_h__
#include "IoContext.h"
#include "Optional.h"
#include <boost/asio/ip/tcp.hpp>
#include <algorithm>
#include <string_view>
#include <vector>
namespace Trinity
{
namespace Asio
{
/**
Hack to make it possible to forward declare resolver (one of its template arguments is a typedef to something super long and using nested classes)
*/
class Resolver
{
public:
explicit Resolver(IoContext& ioContext) : _impl(ioContext) { }
Optional<boost::asio::ip::tcp::endpoint> Resolve(boost::asio::ip::tcp const& protocol, std::string_view host, std::string_view service)
{
boost::system::error_code ec;
boost::asio::ip::resolver_base::flags flagsResolver = boost::asio::ip::resolver_base::all_matching;
boost::asio::ip::tcp::resolver::results_type results = _impl.resolve(protocol, host, service, flagsResolver, ec);
if (results.begin() == results.end() || ec)
return {};
return results.begin()->endpoint();
}
std::vector<boost::asio::ip::tcp::endpoint> ResolveAll(std::string_view host, std::string_view service)
{
boost::system::error_code ec;
boost::asio::ip::resolver_base::flags flagsResolver = boost::asio::ip::resolver_base::all_matching;
boost::asio::ip::tcp::resolver::results_type results = _impl.resolve(host, service, flagsResolver, ec);
std::vector<boost::asio::ip::tcp::endpoint> result;
if (!ec)
std::ranges::transform(results, std::back_inserter(result), [](boost::asio::ip::tcp::resolver::results_type::value_type const& entry) { return entry.endpoint(); });
return result;
}
private:
boost::asio::ip::tcp::resolver _impl;
};
}
}
#endif // Resolver_h__
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