From ae028ab4b67b2c7aab9726a48aeabb0b5432be91 Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Sun, 25 Dec 2022 14:55:40 +0100
Subject: [PATCH] Switch back to local system time synchronization perf_counter
 will stop counting when the system goes to sleep, causing the generation of
 invalid message ids after waking up which in turn put the client into a never
 ending reconnecting loop due to check mismatches caused by the time not being
 synced anymore. It's also unclear whether perf_counter stays in sync during
 long runs.

---
 pyrogram/session/internals/msg_id.py | 20 +++++---------------
 pyrogram/session/session.py          |  3 ---
 2 files changed, 5 insertions(+), 18 deletions(-)

diff --git a/pyrogram/session/internals/msg_id.py b/pyrogram/session/internals/msg_id.py
index 871a10b6..58e3087c 100644
--- a/pyrogram/session/internals/msg_id.py
+++ b/pyrogram/session/internals/msg_id.py
@@ -17,29 +17,19 @@
 #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 import logging
-from datetime import datetime
-from time import perf_counter
+import time
 
 log = logging.getLogger(__name__)
 
 
 class MsgId:
-    reference_clock = 0
     last_time = 0
-    msg_id_offset = 0
-    server_time = 0
+    offset = 0
 
     def __new__(cls) -> int:
-        now = perf_counter() - cls.reference_clock + cls.server_time
-        cls.msg_id_offset = cls.msg_id_offset + 4 if now == cls.last_time else 0
-        msg_id = int(now * 2 ** 32) + cls.msg_id_offset
+        now = time.time()
+        cls.offset = (cls.offset + 4) if now == cls.last_time else 0
+        msg_id = int(now * 2 ** 32) + cls.offset
         cls.last_time = now
 
         return msg_id
-
-    @classmethod
-    def set_server_time(cls, server_time: int):
-        if not cls.server_time:
-            cls.reference_clock = perf_counter()
-            cls.server_time = server_time
-            log.info(f"Time synced: {datetime.utcfromtimestamp(server_time)} UTC")
diff --git a/pyrogram/session/session.py b/pyrogram/session/session.py
index 5e5d93fa..6c3dbc03 100644
--- a/pyrogram/session/session.py
+++ b/pyrogram/session/session.py
@@ -203,9 +203,6 @@ class Session:
         log.debug(data)
 
         for msg in messages:
-            if msg.seq_no == 0:
-                MsgId.set_server_time(msg.msg_id / (2 ** 32))
-
             if msg.seq_no % 2 != 0:
                 if msg.msg_id in self.pending_acks:
                     continue