diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 706e48be9..1bd918ddc 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -3995,7 +3995,7 @@ testCallVectorStringObject x:vector<testString> = TestVectorStringObject;
 testSquareInt x:int32 = TestInt;
 //@description Sends a simple network request to the Telegram servers; for testing only. Can be called before authorization
 testNetwork = Ok;
-//@description Sends a simple network request to the Telegram servers via proxy; for testing only. Can be called before authorization @server Proxy ip @port Proxy port @type Proxy type
+//@description Sends a simple network request to the Telegram servers via proxy; for testing only. Can be called before authorization @server Proxy server IP address @port Proxy server port @type Proxy type
 testProxy server:string port:int32 type:ProxyType = Ok;
 //@description Forces an updates.getDifference call to the Telegram servers; for testing only
 testGetDifference = Ok;
diff --git a/td/mtproto/RawConnection.h b/td/mtproto/RawConnection.h
index 34d1513d2..aeb0503be 100644
--- a/td/mtproto/RawConnection.h
+++ b/td/mtproto/RawConnection.h
@@ -36,7 +36,7 @@ class RawConnection {
     virtual void on_write(uint64 bytes) = 0;
 
     virtual void on_pong() = 0;   // called when we know that connection is alive
-    virtual void on_error() = 0;  // called on RawConnectin error. Such error should be very rare on good connections.
+    virtual void on_error() = 0;  // called on RawConnection error. Such error should be very rare on good connections.
     virtual void on_mtproto_error() = 0;
   };
   RawConnection() = default;
diff --git a/td/mtproto/TlsInit.h b/td/mtproto/TlsInit.h
index 79069e241..ce6e75692 100644
--- a/td/mtproto/TlsInit.h
+++ b/td/mtproto/TlsInit.h
@@ -21,10 +21,10 @@ class Grease {
 
 class TlsInit : public TransparentProxy {
  public:
-  TlsInit(SocketFd socket_fd, IPAddress ip_address, string domain, string secret, unique_ptr<Callback> callback,
-          ActorShared<> parent, double server_time_difference)
-      : TransparentProxy(std::move(socket_fd), std::move(ip_address), std::move(domain), std::move(secret),
-                         std::move(callback), std::move(parent))
+  TlsInit(SocketFd socket_fd, string domain, string secret, unique_ptr<Callback> callback, ActorShared<> parent,
+          double server_time_difference)
+      : TransparentProxy(std::move(socket_fd), IPAddress(), std::move(domain), std::move(secret), std::move(callback),
+                         std::move(parent))
       , server_time_difference_(server_time_difference) {
   }
 
diff --git a/td/telegram/Global.cpp b/td/telegram/Global.cpp
index c0bf8813a..fc78d0b7a 100644
--- a/td/telegram/Global.cpp
+++ b/td/telegram/Global.cpp
@@ -120,7 +120,10 @@ double Global::get_dns_time_difference() const {
   if (dns_flag) {
     return std::max(dns_diff, server_diff);
   }
-  return server_diff;
+  if (td_db_) {
+    return server_diff;
+  }
+  return Clocks::system() - Time::now();
 }
 
 DcId Global::get_webfile_dc_id() const {
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index c0ec199bd..9eb964224 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -51,6 +51,7 @@
 #include "td/telegram/net/NetStatsManager.h"
 #include "td/telegram/net/NetType.h"
 #include "td/telegram/net/Proxy.h"
+#include "td/telegram/net/PublicRsaKeyShared.h"
 #include "td/telegram/net/TempAuthKeyWatchdog.h"
 #include "td/telegram/NotificationGroupId.h"
 #include "td/telegram/NotificationId.h"
@@ -88,6 +89,8 @@
 
 #include "td/db/binlog/BinlogEvent.h"
 
+#include "td/mtproto/HandshakeActor.h"
+#include "td/mtproto/RawConnection.h"
 #include "td/mtproto/utils.h"  // for create_storer, fetch_result, etc, TODO
 
 #include "td/utils/buffer.h"
@@ -104,10 +107,6 @@
 #include "td/utils/tl_parsers.h"
 #include "td/utils/utf8.h"
 
-#include "td/mtproto/HandshakeActor.h"
-#include "td/mtproto/RawConnection.h"
-#include "td/telegram/net/PublicRsaKeyShared.h"
-
 #include <limits>
 #include <tuple>
 #include <type_traits>
@@ -544,41 +543,50 @@ class TestQuery : public Td::ResultHandler {
  private:
   uint64 request_id_;
 };
-class TestProxyRequest : public RequestActor<Unit> {
+
+class TestProxyRequest : public RequestOnceActor {
   Proxy proxy_;
   ActorOwn<> child_;
 
+  static constexpr int16 DC_ID = 2;
+
   auto get_transport() {
-    return mtproto::TransportType{mtproto::TransportType::ObfuscatedTcp, 2, proxy_.secret()};
+    return mtproto::TransportType{mtproto::TransportType::ObfuscatedTcp, DC_ID, proxy_.secret()};
   }
 
   void do_run(Promise<Unit> &&promise) override {
-    if (get_tries() < 2) {
-      promise.set_value(Unit());
-    }
-
     IPAddress ip;
     auto status = ip.init_host_port(proxy_.server(), proxy_.port());
     if (status.is_error()) {
-      return promise.set_error(std::move(status));
+      return promise.set_error(Status::Error(400, status.public_message()));
     }
     auto r_socket_fd = SocketFd::open(ip);
     if (r_socket_fd.is_error()) {
-      return promise.set_error(r_socket_fd.move_as_error());
+      return promise.set_error(Status::Error(400, r_socket_fd.error().public_message()));
     }
 
-    auto connection_promise = PromiseCreator::lambda(
-        [actor_id = actor_id(this), promise = std::move(promise)](Result<ConnectionCreator::ConnectionData> r) mutable {
-          send_closure(actor_id, &TestProxyRequest::on_connection_data, std::move(r), std::move(promise));
-        });
+    auto dc_options = ConnectionCreator::get_default_dc_options(false);
+    IPAddress mtproto_ip;
+    for (auto &dc_option : dc_options.dc_options) {
+      if (dc_option.get_dc_id().get_raw_id() == DC_ID) {
+        mtproto_ip = dc_option.get_ip_address();
+        break;
+      }
+    }
 
-    child_ = ConnectionCreator::prepare_connection(r_socket_fd.move_as_ok(), {&proxy_, ip}, get_transport(), "",
-                                                   IPAddress(), nullptr, {}, false, std::move(connection_promise));
+    auto connection_promise = PromiseCreator::lambda([actor_id = actor_id(this), promise = std::move(promise)](
+                                                         Result<ConnectionCreator::ConnectionData> r_data) mutable {
+      send_closure(actor_id, &TestProxyRequest::on_connection_data, std::move(r_data), std::move(promise));
+    });
+
+    child_ =
+        ConnectionCreator::prepare_connection(r_socket_fd.move_as_ok(), {&proxy_, ip}, get_transport(), "TestPingDC2",
+                                              std::move(mtproto_ip), nullptr, {}, false, std::move(connection_promise));
   }
 
-  void on_connection_data(Result<ConnectionCreator::ConnectionData> r, Promise<Unit> &&promise) {
-    if (r.is_error()) {
-      return promise.set_error(r.move_as_error());
+  void on_connection_data(Result<ConnectionCreator::ConnectionData> r_data, Promise<Unit> &&promise) {
+    if (r_data.is_error()) {
+      return promise.set_error(r_data.move_as_error());
     }
     class HandshakeContext : public mtproto::AuthKeyHandshakeContext {
      public:
@@ -592,8 +600,8 @@ class TestProxyRequest : public RequestActor<Unit> {
      private:
       PublicRsaKeyShared public_rsa_key{DcId::empty(), false};
     };
-    auto handshake = make_unique<mtproto::AuthKeyHandshake>(2, 0);
-    auto data = r.move_as_ok();
+    auto handshake = make_unique<mtproto::AuthKeyHandshake>(DC_ID, 3600);
+    auto data = r_data.move_as_ok();
     auto raw_connection = make_unique<mtproto::RawConnection>(std::move(data.socket_fd), get_transport(), nullptr);
     child_ = create_actor<mtproto::HandshakeActor>(
         "HandshakeActor", std::move(handshake), std::move(raw_connection), make_unique<HandshakeContext>(), 10.0,
@@ -601,22 +609,15 @@ class TestProxyRequest : public RequestActor<Unit> {
         PromiseCreator::lambda(
             [promise = std::move(promise)](Result<unique_ptr<mtproto::AuthKeyHandshake>> handshake) mutable {
               if (handshake.is_error()) {
-                return promise.set_error(handshake.move_as_error());
+                return promise.set_error(Status::Error(400, handshake.error().public_message()));
               }
               promise.set_value(Unit());
             }));
   }
 
-  void do_set_result(Unit &&result) override {
-  }
-
-  void do_send_result() override {
-    send_result(make_tl_object<td_api::ok>());
-  }
-
  public:
   TestProxyRequest(ActorShared<Td> td, uint64 request_id, Proxy proxy)
-      : RequestActor(std::move(td), request_id), proxy_(std::move(proxy)) {
+      : RequestOnceActor(std::move(td), request_id), proxy_(std::move(proxy)) {
   }
 };
 
@@ -7605,9 +7606,9 @@ void Td::on_request(uint64 id, td_api::testNetwork &request) {
 }
 
 void Td::on_request(uint64 id, td_api::testProxy &request) {
-  auto r_proxy = Proxy::from_td_api(std::move(request.server_), request.port_, std::move(request.type_));
+  auto r_proxy = Proxy::from_td_api(std::move(request.server_), request.port_, request.type_.get());
   if (r_proxy.is_error()) {
-    return send_error(id, r_proxy.move_as_error());
+    return send_closure(actor_id(this), &Td::send_error, id, r_proxy.move_as_error());
   }
   CREATE_REQUEST(TestProxyRequest, r_proxy.move_as_ok());
 }
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index ffea27820..2401a1044 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -3612,13 +3612,14 @@ class CliClient final : public Actor {
           type = td_api::make_object<td_api::proxyTypeSocks5>(user, password);
         }
       }
+      auto port_int = to_integer<int32>(port);
       if (op[0] == 'e') {
-        send_request(td_api::make_object<td_api::editProxy>(as_proxy_id(proxy_id), server, to_integer<int32>(port),
-                                                            enable, std::move(type)));
+        send_request(
+            td_api::make_object<td_api::editProxy>(as_proxy_id(proxy_id), server, port_int, enable, std::move(type)));
       } else if (op == "tproxy") {
-        send_request(td_api::make_object<td_api::testProxy>(server, to_integer<int32>(port), std::move(type)));
+        send_request(td_api::make_object<td_api::testProxy>(server, port_int, std::move(type)));
       } else {
-        send_request(td_api::make_object<td_api::addProxy>(server, to_integer<int32>(port), enable, std::move(type)));
+        send_request(td_api::make_object<td_api::addProxy>(server, port_int, enable, std::move(type)));
       }
     } else if (op == "gproxy" || op == "gproxies") {
       send_request(td_api::make_object<td_api::getProxies>());
diff --git a/td/telegram/net/ConnectionCreator.cpp b/td/telegram/net/ConnectionCreator.cpp
index caf044df8..03b78979b 100644
--- a/td/telegram/net/ConnectionCreator.cpp
+++ b/td/telegram/net/ConnectionCreator.cpp
@@ -140,7 +140,7 @@ void ConnectionCreator::set_net_stats_callback(std::shared_ptr<NetStatsCallback>
 void ConnectionCreator::add_proxy(int32 old_proxy_id, string server, int32 port, bool enable,
                                   td_api::object_ptr<td_api::ProxyType> proxy_type,
                                   Promise<td_api::object_ptr<td_api::proxy>> promise) {
-  auto r_proxy = Proxy::from_td_api(std::move(server), port, std::move(proxy_type));
+  auto r_proxy = Proxy::from_td_api(std::move(server), port, proxy_type.get());
   if (r_proxy.is_error()) {
     return promise.set_error(r_proxy.move_as_error());
   }
@@ -368,8 +368,6 @@ void ConnectionCreator::ping_proxy_resolved(int32 proxy_id, IPAddress ip_address
   }
   auto socket_fd = r_socket_fd.move_as_ok();
 
-  auto secret = extra.transport_type.secret;
-
   auto connection_promise =
       PromiseCreator::lambda([promise = std::move(promise), actor_id = actor_id(this),
                               transport_type = extra.transport_type](Result<ConnectionData> r_connection_data) mutable {
@@ -382,7 +380,7 @@ void ConnectionCreator::ping_proxy_resolved(int32 proxy_id, IPAddress ip_address
   CHECK(proxy.use_proxy());
   auto token = next_token();
   auto ref = prepare_connection(std::move(socket_fd), proxy, extra.transport_type, extra.debug_str, extra.mtproto_ip,
-                                nullptr, create_reference(token), true, std::move(connection_promise));
+                                nullptr, create_reference(token), false, std::move(connection_promise));
   if (!ref.empty()) {
     children_[token] = {false, std::move(ref)};
   }
@@ -640,8 +638,9 @@ void ConnectionCreator::request_raw_connection_by_ip(IPAddress ip_address, mtpro
       });
 
   auto token = next_token();
-  auto ref = prepare_connection(std::move(socket_fd), {nullptr, IPAddress()}, transport_type, "", IPAddress(), nullptr,
-                                create_reference(token), true, std::move(connection_promise));
+  auto ref = prepare_connection(std::move(socket_fd), {nullptr, IPAddress()}, transport_type,
+                                PSTRING() << "to IP address " << ip_address, IPAddress(), nullptr,
+                                create_reference(token), false, std::move(connection_promise));
   if (!ref.empty()) {
     children_[token] = {false, std::move(ref)};
   }
@@ -721,7 +720,7 @@ ActorOwn<> ConnectionCreator::prepare_connection(SocketFd socket_fd, const Proxy
                                                  ActorShared<> parent, bool use_connection_token,
                                                  Promise<ConnectionData> promise) {
   if (proxy.use_socks5_proxy() || proxy.use_http_tcp_proxy() || transport_type.secret.emulate_tls()) {
-    VLOG(connections) << "In client_loop: create new transparent proxy connection " << debug_str;
+    VLOG(connections) << "Create new transparent proxy connection " << debug_str;
     class Callback : public TransparentProxy::Callback {
      public:
       explicit Callback(Promise<ConnectionData> promise,
@@ -738,7 +737,7 @@ ActorOwn<> ConnectionCreator::prepare_connection(SocketFd socket_fd, const Proxy
           if (was_connected_ && stats_callback_) {
             stats_callback_->on_error();
           }
-          promise_.set_error(result.move_as_error());
+          promise_.set_error(Status::Error(400, result.error().public_message()));
         } else {
           ConnectionData data;
           data.socket_fd = result.move_as_ok();
@@ -763,7 +762,7 @@ ActorOwn<> ConnectionCreator::prepare_connection(SocketFd socket_fd, const Proxy
     };
     LOG(INFO) << "Start " << (proxy.use_socks5_proxy() ? "Socks5" : (proxy.use_http_tcp_proxy() ? "HTTP" : "TLS"))
               << ": " << debug_str;
-    auto callback = td::make_unique<Callback>(std::move(promise), std::move(stats_callback), use_connection_token);
+    auto callback = make_unique<Callback>(std::move(promise), std::move(stats_callback), use_connection_token);
     if (proxy.use_socks5_proxy()) {
       return ActorOwn<>(create_actor<Socks5>("Socks5", std::move(socket_fd), mtproto_ip, proxy.proxy().user().str(),
                                              proxy.proxy().password().str(), std::move(callback), std::move(parent)));
@@ -772,15 +771,15 @@ ActorOwn<> ConnectionCreator::prepare_connection(SocketFd socket_fd, const Proxy
                                                 proxy.proxy().user().str(), proxy.proxy().password().str(),
                                                 std::move(callback), std::move(parent)));
     } else if (transport_type.secret.emulate_tls()) {
-      return ActorOwn<>(create_actor<mtproto::TlsInit>(
-          "TlsInit", std::move(socket_fd), mtproto_ip, transport_type.secret.get_domain(),
-          transport_type.secret.get_proxy_secret().str(), std::move(callback), std::move(parent),
-          G()->get_dns_time_difference()));
+      return ActorOwn<>(
+          create_actor<mtproto::TlsInit>("TlsInit", std::move(socket_fd), transport_type.secret.get_domain(),
+                                         transport_type.secret.get_proxy_secret().str(), std::move(callback),
+                                         std::move(parent), G()->get_dns_time_difference()));
     } else {
       UNREACHABLE();
     }
   } else {
-    VLOG(connections) << "In client_loop: create new direct connection " << debug_str;
+    VLOG(connections) << "Create new direct connection " << debug_str;
 
     ConnectionData data;
     data.socket_fd = std::move(socket_fd);
@@ -898,8 +897,6 @@ void ConnectionCreator::client_loop(ClientInfo &client) {
       client.checking_connections++;
     }
 
-    mtproto::ProxySecret secret = extra.transport_type.secret;
-
     auto promise = PromiseCreator::lambda(
         [actor_id = actor_id(this), check_mode, transport_type = extra.transport_type, hash = client.hash,
          debug_str = extra.debug_str,
diff --git a/td/telegram/net/ConnectionCreator.h b/td/telegram/net/ConnectionCreator.h
index 662b99d09..4e0da4f5a 100644
--- a/td/telegram/net/ConnectionCreator.h
+++ b/td/telegram/net/ConnectionCreator.h
@@ -17,8 +17,8 @@
 #include "td/telegram/StateManager.h"
 
 #include "td/mtproto/AuthData.h"
-#include "td/mtproto/TransportType.h"
 #include "td/mtproto/RawConnection.h"
+#include "td/mtproto/TransportType.h"
 
 #include "td/net/NetStats.h"
 
@@ -42,13 +42,13 @@
 #include <utility>
 
 namespace td {
-namespace mtproto {
-class RawConnection;
-}  // namespace mtproto
+
 namespace detail {
 class StatsCallback;
-}
+}  // namespace detail
+
 class GetHostByNameActor;
+
 }  // namespace td
 
 namespace td {
@@ -124,6 +124,8 @@ class ConnectionCreator : public NetQueryCallback {
     IPAddress ip_address_;
   };
 
+  static DcOptions get_default_dc_options(bool is_test);
+
   static ActorOwn<> prepare_connection(SocketFd socket_fd, const ProxyInfo &proxy,
                                        mtproto::TransportType transport_type, string debug_str, IPAddress mtproto_ip,
                                        unique_ptr<mtproto::RawConnection::StatsCallback> stats_callback,
@@ -267,8 +269,6 @@ class ConnectionCreator : public NetQueryCallback {
 
   void on_proxy_resolved(Result<IPAddress> ip_address, bool dummy);
 
-  static DcOptions get_default_dc_options(bool is_test);
-
   struct FindConnectionExtra {
     DcOptionsSet::Stat *stat{nullptr};
     mtproto::TransportType transport_type;
diff --git a/td/telegram/net/Proxy.cpp b/td/telegram/net/Proxy.cpp
index aedcd275b..60b4cfe5b 100644
--- a/td/telegram/net/Proxy.cpp
+++ b/td/telegram/net/Proxy.cpp
@@ -5,9 +5,12 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 //
 #include "td/telegram/net/Proxy.h"
+
 #include "td/telegram/td_api.h"
+
 namespace td {
-Result<Proxy> Proxy::from_td_api(string server, int port, td_api::object_ptr<td_api::ProxyType> proxy_type) {
+
+Result<Proxy> Proxy::from_td_api(string server, int port, td_api::ProxyType *proxy_type) {
   if (proxy_type == nullptr) {
     return Status::Error(400, "Proxy type should not be empty");
   }
@@ -18,31 +21,47 @@ Result<Proxy> Proxy::from_td_api(string server, int port, td_api::object_ptr<td_
     return Status::Error(400, "Wrong port number");
   }
 
-  Proxy new_proxy;
   switch (proxy_type->get_id()) {
     case td_api::proxyTypeSocks5::ID: {
-      auto type = td_api::move_object_as<td_api::proxyTypeSocks5>(proxy_type);
-      new_proxy = Proxy::socks5(server, port, type->username_, type->password_);
-      break;
+      auto type = static_cast<td_api::proxyTypeSocks5 *>(proxy_type);
+      return Proxy::socks5(std::move(server), port, std::move(type->username_), std::move(type->password_));
     }
     case td_api::proxyTypeHttp::ID: {
-      auto type = td_api::move_object_as<td_api::proxyTypeHttp>(proxy_type);
+      auto type = static_cast<td_api::proxyTypeHttp *>(proxy_type);
       if (type->http_only_) {
-        new_proxy = Proxy::http_caching(server, port, type->username_, type->password_);
+        return Proxy::http_caching(std::move(server), port, std::move(type->username_), std::move(type->password_));
       } else {
-        new_proxy = Proxy::http_tcp(server, port, type->username_, type->password_);
+        return Proxy::http_tcp(std::move(server), port, std::move(type->username_), std::move(type->password_));
       }
-      break;
     }
     case td_api::proxyTypeMtproto::ID: {
-      auto type = td_api::move_object_as<td_api::proxyTypeMtproto>(proxy_type);
+      auto type = static_cast<td_api::proxyTypeMtproto *>(proxy_type);
       TRY_RESULT(secret, mtproto::ProxySecret::from_link(type->secret_));
-      new_proxy = Proxy::mtproto(server, port, secret);
-      break;
+      return Proxy::mtproto(std::move(server), port, std::move(secret));
     }
     default:
       UNREACHABLE();
+      return Status::Error(400, "Wrong proxy type");
   }
-  return new_proxy;
 }
+
+StringBuilder &operator<<(StringBuilder &string_builder, const Proxy &proxy) {
+  switch (proxy.type()) {
+    case Proxy::Type::Socks5:
+      return string_builder << "ProxySocks5 " << proxy.server() << ":" << proxy.port();
+    case Proxy::Type::HttpTcp:
+      return string_builder << "ProxyHttpTcp " << proxy.server() << ":" << proxy.port();
+    case Proxy::Type::HttpCaching:
+      return string_builder << "ProxyHttpCaching " << proxy.server() << ":" << proxy.port();
+    case Proxy::Type::Mtproto:
+      return string_builder << "ProxyMtproto " << proxy.server() << ":" << proxy.port() << "/"
+                            << proxy.secret().get_encoded_secret();
+    case Proxy::Type::None:
+      return string_builder << "ProxyEmpty";
+    default:
+      UNREACHABLE();
+      return string_builder;
+  }
+}
+
 }  // namespace td
diff --git a/td/telegram/net/Proxy.h b/td/telegram/net/Proxy.h
index 267d37880..d9abcf568 100644
--- a/td/telegram/net/Proxy.h
+++ b/td/telegram/net/Proxy.h
@@ -10,11 +10,10 @@
 
 #include "td/utils/common.h"
 #include "td/utils/Slice.h"
+#include "td/utils/Status.h"
 #include "td/utils/StringBuilder.h"
 #include "td/utils/tl_helpers.h"
 
-#include "td/tl/TlObject.h"
-
 namespace td {
 
 namespace td_api {
@@ -23,7 +22,7 @@ class ProxyType;
 
 class Proxy {
  public:
-  static Result<Proxy> from_td_api(string server, int port, tl_object_ptr<td_api::ProxyType> proxy_type);
+  static Result<Proxy> from_td_api(string server, int port, td_api::ProxyType *proxy_type);
 
   static Proxy socks5(string server, int32 port, string user, string password) {
     Proxy proxy;
@@ -143,23 +142,6 @@ inline bool operator!=(const Proxy &lhs, const Proxy &rhs) {
   return !(lhs == rhs);
 }
 
-inline StringBuilder &operator<<(StringBuilder &string_builder, const Proxy &proxy) {
-  switch (proxy.type()) {
-    case Proxy::Type::Socks5:
-      return string_builder << "ProxySocks5 " << proxy.server() << ":" << proxy.port();
-    case Proxy::Type::HttpTcp:
-      return string_builder << "ProxyHttpTcp " << proxy.server() << ":" << proxy.port();
-    case Proxy::Type::HttpCaching:
-      return string_builder << "ProxyHttpCaching " << proxy.server() << ":" << proxy.port();
-    case Proxy::Type::Mtproto:
-      return string_builder << "ProxyMtproto " << proxy.server() << ":" << proxy.port() << "/"
-                            << proxy.secret().get_encoded_secret();
-    case Proxy::Type::None:
-      return string_builder << "ProxyEmpty";
-    default:
-      UNREACHABLE();
-      return string_builder;
-  }
-}
+StringBuilder &operator<<(StringBuilder &string_builder, const Proxy &proxy);
 
 }  // namespace td
diff --git a/tdutils/td/utils/port/IPAddress.h b/tdutils/td/utils/port/IPAddress.h
index 82c5c9b3c..c6160cbe9 100644
--- a/tdutils/td/utils/port/IPAddress.h
+++ b/tdutils/td/utils/port/IPAddress.h
@@ -82,6 +82,7 @@ class IPAddress {
   void init_ipv4_any();
   void init_ipv6_any();
 };
+
 StringBuilder &operator<<(StringBuilder &builder, const IPAddress &address);
 
 }  // namespace td
diff --git a/test/mtproto.cpp b/test/mtproto.cpp
index 44025b155..8c8d7eca0 100644
--- a/test/mtproto.cpp
+++ b/test/mtproto.cpp
@@ -645,8 +645,8 @@ TEST(Mtproto, TlsTransport) {
         IPAddress ip_address;
         ip_address.init_host_port(domain, 443).ensure();
         SocketFd fd = SocketFd::open(ip_address).move_as_ok();
-        create_actor<mtproto::TlsInit>("TlsInit", std::move(fd), IPAddress(), domain, "0123456789secret",
-                                       make_unique<Callback>(), ActorShared<>(), Clocks::system() - Time::now())
+        create_actor<mtproto::TlsInit>("TlsInit", std::move(fd), domain, "0123456789secret", make_unique<Callback>(),
+                                       ActorShared<>(), Clocks::system() - Time::now())
             .release();
       }
     };