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gh-154727: List TLSv1.3 among SSLSocket.version() return values #154785

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gh-154727: List TLSv1.3 among SSLSocket.version() return values #154785

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9 changes: 6 additions & 3 deletions Doc/library/ssl.rst
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Expand Up @@ -1411,9 +1411,12 @@ SSL sockets also have the following additional methods and attributes:

Return the actual SSL protocol version negotiated by the connection
as a string, or ``None`` if no secure connection is established.
As of this writing, possible return values include ``"SSLv2"``,
``"SSLv3"``, ``"TLSv1"``, ``"TLSv1.1"`` and ``"TLSv1.2"``.
Recent OpenSSL versions may define more return values.

The string comes directly from the underlying TLS library. The
possible values depend on which library and version Python is
linked against; see `SSL_get_version()
<https://docs.openssl.org/master/man3/SSL_get_version/#return-values>`_
for OpenSSL's values.

.. versionadded:: 3.5

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