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gh-95816: fix client_context example from ssl protocol versions docs #93798

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gh-95816: fix client_context example from ssl protocol versions docs #93798

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1b97375
fix client_context example from ssl protocol versions docs
graingert Jun 14, 2022
d642d91
Merge branch 'main' into patch-5
graingert Aug 9, 2022
1187dd0
Merge branch 'main' into patch-5
graingert Oct 14, 2024
98d744c
Update Doc/library/ssl.rst
graingert Oct 14, 2024
63dac5a
Merge branch 'main' into patch-5
graingert Dec 28, 2024
3e0f334
Update Doc/library/ssl.rst
graingert Dec 28, 2024
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4 changes: 2 additions & 2 deletions Doc/library/ssl.rst
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Expand Up @@ -2686,8 +2686,8 @@ disabled by default.
::

>>> client_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
>>> client_context.minimum_version = ssl.TLSVersion.TLSv1_3
>>> client_context.maximum_version = ssl.TLSVersion.TLSv1_3
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introduced here https://github.com/python/cpython/pull/25455/files#diff-df0c7115ade453321aadb2eb534941f2ec87c4b52563bae70421918dce5435dcR2653-R2654

>>> client_context.minimum_version = ssl.TLSVersion.TLSv1_2
>>> client_context.maximum_version = ssl.TLSVersion.MAXIMUM_VERSION


The SSL context created above will only allow TLSv1.2 and later (if
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this states the context above supports TLSv1.2-max but the example was TLSv1.3 only

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@janbrasna janbrasna Dec 19, 2023 •
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@graingert If you update to current main the wording now states "TLSv1.3 and later" — so I'd recommend to match ssl.* min version with main too, but definitely propose the MAXIMUM_SUPPORTED anyways which makes much more sense compared to the current docs.

(While the docs specify "Deprecated since version 3.10: All TLSVersion members except TLSVersion.TLSv1_2 and TLSVersion.TLSv1_3 are deprecated." I believe that doesn't include the magic constants, as I can't see any proof in the deprecation warning code to raise any warnings for the MIN_/MAX_ constants, so it's just the description that's written too broadly.)

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On the other hand, configuring the max version in this way is superfluous, as that is by the definition the default:

"SSLContext.maximum_version — A TLSVersion enum member representing the highest supported TLS version. The value defaults to TLSVersion.MAXIMUM_SUPPORTED."
— https://docs.python.org/3/library/ssl.html#ssl.SSLContext.minimum_version

so there's no point of showing an example set this way.

I'd personally vouch for showing a real range as in #107273 (review) …

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