Stack for undelivered messages about efb-telegram-master

[blueset]

Trying to implement a decorator that put an infinite retry every 1 to 2 seconds to all major outgoing message requests (excluding polling).

[blueset]

Due to strange network problems, in a consecutive period of time, messages may appear "not delivered" by returning an HTTP Timed Out response, but is in fact sent. This causes messages to be sent infinitely and potentially triggers Telegram's Spam filter. So this feature is turned off by default to prevent such issue to happen.

[blueset]

I have written an article explaining how difficult to solve this issue on the current architecture due to constraints of the Telegram Bot API.

I would only see this might have improvement if we migrate to MTProto API which could resolve some (but not all) of the issue we have there. Migration to MTProto is possible in the future (together with framework-wide support to Python async) but I don’t currently have any plan on it.