From 64bc1ad7f0157393c9ddfc2e5001a38b86d812ca Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Wed, 20 Oct 2021 01:50:58 +0300
Subject: [PATCH] Don't store all created message random IDs.

---
 td/telegram/MessagesManager.cpp | 10 +---------
 td/telegram/MessagesManager.h   |  1 -
 2 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index faabb3500..5387dab17 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -23158,8 +23158,7 @@ int64 MessagesManager::generate_new_random_id() {
   int64 random_id;
   do {
     random_id = Random::secure_int64();
-  } while (random_id == 0 || message_random_ids_.find(random_id) != message_random_ids_.end());
-  message_random_ids_.insert(random_id);
+  } while (random_id == 0 || being_sent_messages_.find(random_id) != being_sent_messages_.end());
   return random_id;
 }
 
@@ -33468,10 +33467,6 @@ void MessagesManager::delete_message_from_database(Dialog *d, MessageId message_
     }
   }
 
-  if (m != nullptr && m->random_id != 0 && (m->is_outgoing || d->dialog_id == get_my_dialog_id())) {
-    message_random_ids_.erase(m->random_id);
-  }
-
   if (m != nullptr && m->notification_id.is_valid()) {
     CHECK(!message_id.is_scheduled());
     auto from_mentions = is_from_mention_notification_group(d, m);
@@ -36845,8 +36840,6 @@ MessagesManager::Message *MessagesManager::continue_send_message(DialogId dialog
   m->have_previous = true;
   m->have_next = true;
 
-  message_random_ids_.insert(m->random_id);
-
   bool need_update = false;
   bool need_update_dialog_pos = false;
   auto result_message =
@@ -37070,7 +37063,6 @@ void MessagesManager::on_binlog_events(vector<BinlogEvent> &&events) {
           m->have_previous = true;
           m->have_next = true;
 
-          message_random_ids_.insert(m->random_id);
           forwarded_messages.push_back(add_message_to_dialog(to_dialog, std::move(m), true, &need_update,
                                                              &need_update_dialog_pos, "forward message again"));
           send_update_new_message(to_dialog, forwarded_messages.back());
diff --git a/td/telegram/MessagesManager.h b/td/telegram/MessagesManager.h
index bc5acb4d2..49c693a7e 100644
--- a/td/telegram/MessagesManager.h
+++ b/td/telegram/MessagesManager.h
@@ -3168,7 +3168,6 @@ class MessagesManager final : public Actor {
   bool ttl_db_has_query_;
   Slot ttl_db_slot_;
 
-  std::unordered_set<int64> message_random_ids_;
   std::unordered_map<int64, FullMessageId> being_sent_messages_;  // message_random_id -> message
 
   std::unordered_map<FullMessageId, MessageId, FullMessageIdHash>