diff --git a/td/telegram/net/ConnectionCreator.cpp b/td/telegram/net/ConnectionCreator.cpp
index 424850620..1e1460eff 100644
--- a/td/telegram/net/ConnectionCreator.cpp
+++ b/td/telegram/net/ConnectionCreator.cpp
@@ -90,6 +90,8 @@ class StatsCallback final : public mtproto::RawConnection::StatsCallback {
 }  // namespace detail
 
 ConnectionCreator::ClientInfo::ClientInfo() {
+  sanity_flood_control.add_limit(5, 10);
+
   flood_control.add_limit(1, 1);
   flood_control.add_limit(4, 2);
   flood_control.add_limit(8, 3);
@@ -549,6 +551,7 @@ void ConnectionCreator::on_network(bool network_flag, uint32 network_generation)
 
     for (auto &client : clients_) {
       client.second.backoff.clear();
+      client.second.sanity_flood_control.clear_events();
       client.second.flood_control.clear_events();
       client.second.flood_control_online.clear_events();
       client_loop(client.second);
@@ -566,6 +569,7 @@ void ConnectionCreator::on_online(bool online_flag) {
   online_flag_ = online_flag;
   if (need_drop_flood_control) {
     for (auto &client : clients_) {
+      client.second.sanity_flood_control.clear_events();
       client.second.backoff.clear();
       client.second.flood_control_online.clear_events();
       client_loop(client.second);
@@ -576,6 +580,7 @@ void ConnectionCreator::on_logging_out(bool is_logging_out) {
   VLOG(connections) << "Receive logging out flag " << is_logging_out;
   is_logging_out_ = is_logging_out;
   for (auto &client : clients_) {
+    client.second.sanity_flood_control.clear_events();
     client.second.backoff.clear();
     client.second.flood_control_online.clear_events();
     client_loop(client.second);
@@ -865,16 +870,15 @@ void ConnectionCreator::client_loop(ClientInfo &client) {
     // Check flood
     auto &flood_control = act_as_if_online ? client.flood_control_online : client.flood_control;
     auto wakeup_at = max(flood_control.get_wakeup_at(), client.mtproto_error_flood_control.get_wakeup_at());
+    wakeup_at = max(client.sanity_flood_control.get_wakeup_at(), wakeup_at);
+
     if (!act_as_if_online) {
       wakeup_at = max(wakeup_at, client.backoff.get_wakeup_at());
     }
     if (wakeup_at > Time::now()) {
       return client_set_timeout_at(client, wakeup_at);
     }
-    flood_control.add_event(static_cast<int32>(Time::now()));
-    if (!act_as_if_online) {
-      client.backoff.add_event(static_cast<int32>(Time::now()));
-    }
+    client.sanity_flood_control.add_event(static_cast<int32>(Time::now()));
 
     // Create new RawConnection
     // sync part
@@ -889,6 +893,12 @@ void ConnectionCreator::client_loop(ClientInfo &client) {
       return client_set_timeout_at(client, Time::now() + 0.1);
     }
 
+    // Events with failed socket creation are ignored
+    flood_control.add_event(static_cast<int32>(Time::now()));
+    if (!act_as_if_online) {
+      client.backoff.add_event(static_cast<int32>(Time::now()));
+    }
+
     auto socket_fd = r_socket_fd.move_as_ok();
     IPAddress debug_ip;
     auto debug_ip_status = debug_ip.init_socket_address(socket_fd);
diff --git a/td/telegram/net/ConnectionCreator.h b/td/telegram/net/ConnectionCreator.h
index 5e43ebb6c..38c5bb9e7 100644
--- a/td/telegram/net/ConnectionCreator.h
+++ b/td/telegram/net/ConnectionCreator.h
@@ -147,6 +147,7 @@ class ConnectionCreator : public NetQueryCallback {
     void add_session_id(int64 session_id);
 
     Backoff backoff;
+    FloodControlStrict sanity_flood_control;
     FloodControlStrict flood_control;
     FloodControlStrict flood_control_online;
     FloodControlStrict mtproto_error_flood_control;