text: Title: aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host api.binance.com:443 ssl:default [None]
  Body: Hi,
  
  Thanks for developing and maintaining the python-binance. It's very useful.
  
  Recently, I'm trying to develop a connection for listening the Binance USDM futures user data, via the ThreadedWebsocketManager.start_futures_socket. However, the disconnection happens quite often with the error below.
  
  **Could anyone help please?**
  
   Task exception was never retrieved
   future: <Task finished coro=<KeepAliveWebsocket._keepalive_socket() done, defined at /app/streams.py:247> exception=ClientConnectorError(ConnectionKey(host='fapi.binance.c$m', port=443, is_ssl=True, ssl=None, proxy=None, proxy_auth=None, proxy_headers_hash=8217749035264735374), ConnectionResetError())>
   Traceback (most recent call last):
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 969, in _wrap_create_connection
       return await self._loop.create_connection(*args, **kwargs)  # type: ignore  # noqa
     File "/usr/local/lib/python3.7/asyncio/base_events.py", line 981, in create_connection
       ssl_handshake_timeout=ssl_handshake_timeout)
     File "/usr/local/lib/python3.7/asyncio/base_events.py", line 1009, in _create_connection_transport
       await waiter
   ConnectionResetError
   
   The above exception was the direct cause of the following exception:
   
   Traceback (most recent call last):
     File "/app/streams.py", line 248, in _keepalive_socket
       listen_key = await self._get_listen_key()
     File "/app/streams.py", line 239, in _get_listen_key
       listen_key = await self._client.futures_stream_get_listen_key()
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 7421, in futures_stream_get_listen_key
       res = await self._request_futures_api('post', 'listenKey', signed=False, data={})
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 6519, in _request_futures_api                                                              
       return await self._request(method, uri, signed, True, **kwargs)
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 6495, in _request
       async with getattr(self.session, method)(uri, **kwargs) as response:
     File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 1117, in __aenter__
       self._resp = await self._coro
     File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 521, in _request
       req, traces=traces, timeout=real_timeout
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 535, in connect
       proto = await self._create_connection(req, traces, timeout)
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 892, in _create_connection
       _, proto = await self._create_direct_connection(req, traces, timeout)
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 1051, in _create_direct_connection
       raise last_exc
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 1032, in _create_direct_connection
       client_error=client_error,
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 975, in _wrap_create_connection
       raise client_error(req.connection_key, exc) from exc
   aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host fapi.binance.com:443 ssl:default [None]
   Task exception was never retrieved
   future: <Task finished coro=<KeepAliveWebsocket._keepalive_socket() done, defined at /app/streams.py:247> exception=ClientConnectorError(ConnectionKey(host='api.binance.com', port=443, is_ssl=True, ssl=None, proxy=None, proxy_auth=None, proxy_headers_hash=8217749035264735374), ConnectionResetError())>
   Traceback (most recent call last):
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 969, in _wrap_create_connection
       return await self._loop.create_connection(*args, **kwargs)  # type: ignore  # noqa
     File "/usr/local/lib/python3.7/asyncio/base_events.py", line 981, in create_connection
       ssl_handshake_timeout=ssl_handshake_timeout)
     File "/usr/local/lib/python3.7/asyncio/base_events.py", line 1009, in _create_connection_transport
       await waiter
   ConnectionResetError
   The above exception was the direct cause of the following exception:
   
   Traceback (most recent call last):
     File "/app/streams.py", line 248, in _keepalive_socket
       listen_key = await self._get_listen_key()
     File "/app/streams.py", line 235, in _get_listen_key
       listen_key = await self._client.stream_get_listen_key()
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 7026, in stream_get_listen_key
       res = await self._post('userDataStream', False, data={})
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 6554, in _post
       return await self._request_api('post', path, signed, version, **kwargs)
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 6514, in _request_api
       return await self._request(method, uri, signed, **kwargs)
     File "/usr/local/lib/python3.7/site-packages/binance/client.py", line 6495, in _request
       async with getattr(self.session, method)(uri, **kwargs) as response:
     File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 1117, in __aenter__
       self._resp = await self._coro
     File "/usr/local/lib/python3.7/site-packages/aiohttp/client.py", line 521, in _request
       req, traces=traces, timeout=real_timeout
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 535, in connect
       proto = await self._create_connection(req, traces, timeout)
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 892, in _create_connection
       _, proto = await self._create_direct_connection(req, traces, timeout)
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 1051, in _create_direct_connection
       raise last_exc
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 1032, in _create_direct_connection
       client_error=client_error,
     File "/usr/local/lib/python3.7/site-packages/aiohttp/connector.py", line 975, in _wrap_create_connection
       raise client_error(req.connection_key, exc) from exc
   aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host api.binance.com:443 ssl:default [None]
  
  