This is "nn::ssl::sf::SslVersion" or "nn::ssl::Context::SslVersion". This is a bitmask which controls the min/max TLS versions to use, depending on which lowest/highest bits are set (if Auto isn't set). Auto uses min=1.0/max=1.2.
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This is "nn::ssl::sf::SslVersion" or "nn::ssl::Context::SslVersion".
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Auto/bit24 uses min=TlsV10 max=TlsV12.
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This is a bitmask which controls the min/max TLS versions to use, depending on which lowest/highest bits are set (if Auto isn't set).
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[12.0.3+] TLS 1.3 is no longer used: the TlsV13 bit is now handled the same as TlsV12 (uses TLS 1.2), and both Auto bits only use TLS 1.2 for the maximum.
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Auto uses min=TlsV10 max=TlsV12. ApiVersion is 1.
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[12.0.0+] Auto now uses min=TlsV10 max=TlsV13. ApiVersion is now 2.
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[12.0.3+] TLS 1.3 is no longer used. The TlsV13 bit is now handled the same as TlsV12 (uses TLS 1.2), and Auto only uses TLS 1.2 for the maximum.