1 files changed, 48 insertions, 0 deletions
diff --git a/libs/tdlib/td/tdnet/td/net/GetHostByNameActor.cpp b/libs/tdlib/td/tdnet/td/net/GetHostByNameActor.cpp
new file mode 100644
index 0000000000..b6cdcca0f0
--- /dev/null
+++ b/libs/tdlib/td/tdnet/td/net/GetHostByNameActor.cpp
@@ -0,0 +1,48 @@
+//
+// 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