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[3.15] gh-159387: Fix TLS 1.0–1.2 availability detection with OpenSSL 4.0 (GH-159388) - #161320
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…4.0 (pythonGH-159388) Fix TLS 1.0–1.2 availability detection with OpenSSL 4.0 OpenSSL 4.0 removed the version-specific methods but still supports TLS 1.0–1.2 through TLS_method(). Stop reporting these versions as unavailable, and expose legacy PROTOCOL_TLSv1* constants only when their corresponding methods exist. (cherry picked from commit e7acd6a) Co-authored-by: Pengyu Lee <lipengyu@kylinos.cn>
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Fix TLS 1.0–1.2 availability detection with OpenSSL 4.0
OpenSSL 4.0 removed the version-specific methods but still supports
TLS 1.0–1.2 through TLS_method(). Stop reporting these versions as
unavailable, and expose legacy PROTOCOL_TLSv1* constants only when their corresponding methods exist.
(cherry picked from commit e7acd6a)
Co-authored-by: Pengyu Lee lipengyu@kylinos.cn
ssl.HAS_TLSv1_2isFalsewith OpenSSL 4.0 although TLS 1.2 connections work #159387