From c4142753d03f6079472ed2ef95ca0ee2c50565c5 Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Mon, 19 Mar 2018 01:08:34 +0100
Subject: [PATCH] Handle minified channel updates

---
 pyrogram/client/client.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index 9c49058a..e0a16c2b 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -616,6 +616,28 @@ class Client:
                         ) or getattr(update, "channel_id", None)
 
                         pts = getattr(update, "pts", None)
+                        pts_count = getattr(update, "pts_count", None)
+
+                        if isinstance(update, types.UpdateNewChannelMessage):
+                            diff = self.send(
+                                functions.updates.GetChannelDifference(
+                                    channel=self.resolve_peer(update.message.to_id.channel_id),
+                                    filter=types.ChannelMessagesFilter(
+                                        ranges=[types.MessageRange(
+                                            min_id=update.message.id,
+                                            max_id=update.message.id
+                                        )]
+                                    ),
+                                    pts=pts - pts_count,
+                                    limit=pts
+                                )
+                            )
+
+                            self.fetch_peers(diff.users)
+                            self.fetch_peers(diff.chats)
+
+                            updates.users += diff.users
+                            updates.chats += diff.chats
 
                         if channel_id and pts:
                             if channel_id not in self.channels_pts: