socket.send(), OSError(), TimeoutError(), Connection lost/reset, …¶
These are network-level errors that indicate the connection to Telegram’s servers was interrupted. Irenogram handles most of these automatically by reconnecting. If you see them frequently, check:
Your network connection stability.
Whether Telegram servers are having issues (check downdetector.com).
Whether you are behind a restrictive firewall or NAT. Consider using a proxy.
Whether your machine’s clock is significantly out of sync (MTProto is sensitive to clock skew).