Answering my own question for those searching.

Yes, make-ssl-connect@ tracks protocol recommendations. [1] shows that 
make-ssl-connect@ uses `ssl-make-server-context' with default arguments, 
meaning an `auto' protocol. The server context docs point to client context 
docs for the meaning of `'auto'. Quote: "Automatically negotiates the protocol 
version from those that this library considers sufficiently secure—currently 
TLS versions 1.0 and higher, but subject to change."

[1]: 
https://github.com/racket/web-server/blob/ba1b1cf5c49a589f7f4baaa4100db917ed9e1611/web-server-lib/web-server/web-server.rkt#L74

~slg

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, December 10, 2020 7:47 PM, Sage Gerard <s...@sagegerard.com> wrote:

> I've seen articles say "SSL" when they mean "TLS". When I read the docs for 
> make-ssl-connect@, it does not clarify what algorithm backs use of HTTPS. 
> Only that OpenSSL is used.
>
> Does make-ssl-connect@ track current recommendations like TLS 1.2 or 1.3, or 
> is it fixed to some version of SSL?
>
> ~slg

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