tdlight/tdnet/td/net/GetHostByNameActor.cpp

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//
// 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)
//
#include "td/net/GetHostByNameActor.h"
#include "td/utils/logging.h"
#include "td/utils/Time.h"
namespace td {
GetHostByNameActor::GetHostByNameActor(int32 ok_timeout, int32 error_timeout)
: ok_timeout_(ok_timeout), error_timeout_(error_timeout) {
}
void GetHostByNameActor::run(std::string host, int port, td::Promise<td::IPAddress> promise) {
auto r_ip = load_ip(std::move(host), port);
promise.set_result(std::move(r_ip));
}
Result<td::IPAddress> GetHostByNameActor::load_ip(string host, int port) {
auto &value = cache_.emplace(host, Value{{}, 0}).first->second;
auto begin_time = td::Time::now();
if (value.expire_at > begin_time) {
auto ip = value.ip.clone();
if (ip.is_ok()) {
ip.ok_ref().set_port(port);
CHECK(ip.ok().get_port() == port);
}
return ip;
}
td::IPAddress ip;
auto status = ip.init_host_port(host, port);
auto end_time = td::Time::now();
LOG(WARNING) << "Init host = " << host << ", port = " << port << " in " << end_time - begin_time << " seconds to "
<< ip;
if (status.is_ok()) {
value = Value{ip, end_time + ok_timeout_};
return ip;
} else {
value = Value{status.clone(), end_time + error_timeout_};
return std::move(status);
}
}
} // namespace td