From d9b8c1b0bed18ab93585b08845b14d409bff24a1 Mon Sep 17 00:00:00 2001
From: Dan Elkouby <streetwalkermc@gmail.com>
Date: Sun, 17 Jun 2018 18:57:46 +0300
Subject: [PATCH] Don't break existing references to connection_dropped

---
 telethon/network/mtprotosender.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/telethon/network/mtprotosender.py b/telethon/network/mtprotosender.py
index ec5fcc43..4bc54d39 100644
--- a/telethon/network/mtprotosender.py
+++ b/telethon/network/mtprotosender.py
@@ -261,7 +261,9 @@ class MTProtoSender:
         __log__.debug('Starting receive loop')
         self._recv_loop_handle = self._loop.create_task(self._recv_loop())
 
-        self._connection_dropped = asyncio.Future()
+        # First connection or manual reconnection after a failure
+        if self._connection_dropped is None or self._connection_dropped.done():
+            self._connection_dropped = asyncio.Future()
         __log__.info('Connection to {} complete!'.format(self._ip))
 
     async def _reconnect(self):