//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
// 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)
#pragma once
#include "td/actor/actor.h"
#include "td/actor/PromiseFuture.h"
#include "td/utils/port/IPAddress.h"
#include "td/utils/Status.h"
#include <unordered_map>
namespace td {
class GetHostByNameActor final : public td::Actor {
public:
explicit GetHostByNameActor(int32 ok_timeout = CACHE_TIME, int32 error_timeout = ERROR_CACHE_TIME);
void run(std::string host, int port, td::Promise<td::IPAddress> promise);
private:
struct Value {
Result<td::IPAddress> ip;
double expire_at;
};
std::unordered_map<string, Value> cache_;
static constexpr int32 CACHE_TIME = 60 * 29; // 29 minutes
static constexpr int32 ERROR_CACHE_TIME = 60 * 5; // 5 minutes
int32 ok_timeout_;
int32 error_timeout_;
Result<td::IPAddress> load_ip(string host, int port) TD_WARN_UNUSED_RESULT;
} // namespace td
