51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/net/GetHostByNameActor.h"
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#include "td/utils/logging.h"
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#include "td/utils/Time.h"
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namespace td {
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GetHostByNameActor::GetHostByNameActor(int32 ok_timeout, int32 error_timeout)
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: ok_timeout_(ok_timeout), error_timeout_(error_timeout) {
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}
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void GetHostByNameActor::run(std::string host, int port, bool prefer_ipv6, td::Promise<td::IPAddress> promise) {
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auto r_ip = load_ip(std::move(host), port, prefer_ipv6);
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promise.set_result(std::move(r_ip));
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}
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Result<td::IPAddress> GetHostByNameActor::load_ip(string host, int port, bool prefer_ipv6) {
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auto &value = cache_[prefer_ipv6].emplace(host, Value{{}, 0}).first->second;
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auto begin_time = td::Time::now();
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if (value.expire_at > begin_time) {
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auto ip = value.ip.clone();
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if (ip.is_ok()) {
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ip.ok_ref().set_port(port);
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CHECK(ip.ok().get_port() == port);
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}
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return ip;
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}
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td::IPAddress ip;
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auto status = ip.init_host_port(host, port, prefer_ipv6);
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auto end_time = td::Time::now();
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LOG(WARNING) << "Init host = " << host << ", port = " << port << " in " << end_time - begin_time << " seconds to "
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<< ip;
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if (status.is_ok()) {
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value = Value{ip, end_time + ok_timeout_};
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return ip;
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} else {
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value = Value{status.clone(), end_time + error_timeout_};
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return std::move(status);
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}
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}
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} // namespace td
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