Question regarding adding certificates

[johnedstone]

I followed your comments here and here.

It's not clear to me what you did.
I've tried BearSSL and adding that output to NBRootCerts.h without success.
The sketch that I am using, which works without cert validation, is here

Do you have any more details on how I can add, e.g Let's Encrypt Root Cert, to the library?
Thanks.

[johnedstone]

Actually, you can put this issue/question on "pause". Let me read this link

[johnedstone]

SSLClient did not close cleanly and even though the post was successful, I could not capture the status because of the SSL socket error, warning that the connection was close to abruptly.

At any rate, adding the output of brssl chain lets_encrypt_ISRG_ROOT_X1.pem to NBRootCerts.h, compiled just fine, but the connection did not complete.
Giving up for now :(