Certificate validation and expiry

cotestatnt / AsyncTelegram2

Powerful, flexible and secure Arduino Telegram BOT library. Hardware independent, it can be used with any MCU capable of handling an SSL connection.

MIT License

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Certificate validation and expiry #138

Open moldabekov opened 2 months ago

moldabekov commented 2 months ago

Hello!

First off, excellent work. My ESP8266 is running much quicker with your TG bot library. However, I'm quite concerned about the embedded TLS certificate (tg_certificate.h) for api.telegram.org. I understand it's likely in place to reduce the overhead for connection time. But what occurs when the certificate expires, which is expected in September 2024?

I am planning to put my device in remote distant place, and now thinking what workarounds or fixes can be applied to avoid any service interruptions.

zenbooster commented 1 month ago

Hello! in September 2024?

Ha-ha!! ))

Unable to connect to Telegram server
(SSLClient)(SSL_ERROR)(m_start_ssl): Failed to initlalize the SSL layer
(SSLClient)(SSL_ERROR)(m_print_br_error): Certificate is expired or not yet valid.

Unable to connect to Telegram server
(SSLClient)(SSL_ERROR)(m_start_ssl): Failed to initlalize the SSL layer
(SSLClient)(SSL_ERROR)(m_print_br_error): Certificate is expired or not yet valid.