Merge pull request #1638 from coder2020official/master

Fixes #1637, #1636

telebot/asyncio_helper.py

@@ -1,5 +1,7 @@
 import asyncio # for future uses
+import ssl
 import aiohttp
+import certifi
 from telebot import types
 
 try:
@@ -26,18 +28,22 @@ REQUEST_LIMIT = 50
 
 class SessionManager:
     def __init__(self) -> None:
-        self.session = aiohttp.ClientSession(connector=aiohttp.TCPConnector(
-            limit=REQUEST_LIMIT
-        ))
+        self.session = None
+        self.ssl_context = ssl.create_default_context(cafile=certifi.where())
 
 
     async def create_session(self):
         self.session = aiohttp.ClientSession(connector=aiohttp.TCPConnector(
-            limit=REQUEST_LIMIT
+            limit=REQUEST_LIMIT,
+            ssl_context=self.ssl_context
         ))
         return self.session
 
     async def get_session(self):
+        if self.session is None:
+            self.session = await self.create_session()
+            return self.session
+            
         if self.session.closed:
             self.session = await self.create_session()