Am 03.06.2018 um 13:59 schrieb shiz:
> TLS 1.3 offered (OK): draft 28, draft 27, draft 26

there are different, incompatible versions (drafts) of TLS1.3

Browser and server must implement the same draft version otherwise the browser fall back to TLS1.2.
see https://wiki.openssl.org/index.php/TLS1.3

Andreas
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