From ca7c1e5adabc2c94b58d984528eb45f8299c4ee8 Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Sun, 20 Jun 2021 03:05:58 +0300
Subject: [PATCH] Dump network queries from oldest to newest.

---
 td/telegram/cli.cpp               | 3 +--
 td/telegram/net/NetQueryStats.cpp | 3 ++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index dbc08fcf3..f6aa30ee1 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -145,7 +145,6 @@ static char *command_generator(const char *text, int state) {
                                        "CancelDownloadFile",
                                        "ImportContacts",
                                        "RemoveContacts",
-                                       "DumpNetQueries",
                                        "CreateSecretChat",
                                        "CreateNewSecretChat"};
   static size_t cmd_i;
@@ -4304,7 +4303,7 @@ class CliClient final : public Actor {
       }
     } else if (op == "q" || op == "Quit") {
       quit();
-    } else if (op == "dnq" || op == "DumpNetQueries") {
+    } else if (op == "dnq") {
       dump_pending_network_queries(*net_query_stats_);
     } else if (op == "fatal") {
       LOG(FATAL) << "Fatal!";
diff --git a/td/telegram/net/NetQueryStats.cpp b/td/telegram/net/NetQueryStats.cpp
index 4eab21464..a8ed0a489 100644
--- a/td/telegram/net/NetQueryStats.cpp
+++ b/td/telegram/net/NetQueryStats.cpp
@@ -31,7 +31,8 @@ void NetQueryStats::dump_pending_network_queries() {
   bool was_gap = false;
   auto &net_query_list = list_;
   auto guard = net_query_list.lock();
-  for (auto end = net_query_list.end(), cur = net_query_list.begin(); cur != end; cur = cur->get_next(), i++) {
+  for (auto begin = net_query_list.begin(), cur = net_query_list.end(); cur != begin; i++) {
+    cur = cur->get_prev();
     if (i < 20 || i + 20 > n || i % (n / 20 + 1) == 0) {
       if (was_gap) {
         LOG(WARNING) << "...";