mirror of
https://github.com/Relintai/rcpp_framework.git
synced 2024-11-14 04:57:21 +01:00
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
// Copyright 2016, Tao An. All rights reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style license
|
|
// that can be found in the License file.
|
|
|
|
// Author: Tao An
|
|
|
|
#pragma once
|
|
#include <trantor/exports.h>
|
|
#include <memory>
|
|
#include <trantor/net/EventLoop.h>
|
|
#include "core/net/inet_address.h"
|
|
|
|
namespace trantor
|
|
{
|
|
/**
|
|
* @brief This class represents an asynchronous DNS resolver.
|
|
* @note Although the c-ares library is not essential, it is recommended to
|
|
* install it for higher performance
|
|
*/
|
|
class TRANTOR_EXPORT Resolver
|
|
{
|
|
public:
|
|
using Callback = std::function<void(const trantor::InetAddress&)>;
|
|
|
|
/**
|
|
* @brief Create a new DNS resolver.
|
|
*
|
|
* @param loop The event loop in which the DNS resolver runs.
|
|
* @param timeout The timeout in seconds for DNS.
|
|
* @return std::shared_ptr<Resolver>
|
|
*/
|
|
static std::shared_ptr<Resolver> newResolver(EventLoop* loop = nullptr,
|
|
size_t timeout = 60);
|
|
|
|
/**
|
|
* @brief Resolve an address asynchronously.
|
|
*
|
|
* @param hostname
|
|
* @param callback
|
|
*/
|
|
virtual void resolve(const std::string& hostname,
|
|
const Callback& callback) = 0;
|
|
|
|
virtual ~Resolver()
|
|
{
|
|
}
|
|
|
|
/**
|
|
* @brief Check whether the c-ares library is used.
|
|
*
|
|
* @return true
|
|
* @return false
|
|
*/
|
|
static bool isCAresUsed();
|
|
};
|
|
} // namespace trantor
|