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This needs the following packages installed: * `pyOpenSSL`_ (tested with 16.0.0) * `cryptography`_ (minimum 1.3.4, from pyopenssl) * `idna`_ (minimum 2.0) However, pyOpenSSL depends on cryptography, so while we use all three directly here we end up having relatively few packages required. You can install them with the following command: .. code-block:: bash $ python -m pip install pyopenssl cryptography idna To activate certificate checking, call :func:`~urllib3.contrib.pyopenssl.inject_into_urllib3` from your Python code before you begin making HTTP requests. This can be done in a ``sitecustomize`` module, or at any other time before your application begins using ``urllib3``, like this: .. code-block:: python try: import urllib3.contrib.pyopenssl urllib3.contrib.pyopenssl.inject_into_urllib3() except ImportError: pass .. _pyopenssl: https://www.pyopenssl.org .. _cryptography: https://cryptography.io .. _idna: https://github.com/kjd/idna � )� annotationsN)�x509)�UnsupportedExtensionc @ s e Zd ZdS )r N)�__name__� __module__� __qualname__� r r �J/opt/alt/python38/lib/python3.8/site-packages/urllib3/contrib/pyopenssl.pyr 2 s r )�BytesIO)�socket)�timeout� )�util��X509�inject_into_urllib3�extract_from_urllib3zdict[int, int]�_openssl_versions�PROTOCOL_TLSv1_1�TLSv1_1_METHOD�PROTOCOL_TLSv1_2�TLSv1_2_METHODc C s i | ]\}}||�qS r r )�.0�k�vr r r � <dictcomp>Y s r � OP_NO_SSLv2� OP_NO_SSLv3�int�_OP_NO_SSLv2_OR_SSLv3� OP_NO_TLSv1� _OP_NO_TLSv1� OP_NO_TLSv1_1�_OP_NO_TLSv1_1� OP_NO_TLSv1_2�_OP_NO_TLSv1_2� OP_NO_TLSv1_3�_OP_NO_TLSv1_3� _openssl_to_ssl_minimum_version� _openssl_to_ssl_maximum_versioni @ �None��returnc C s& t � tt_ttj_dt_dtj_dS )z7Monkey-patch urllib3 with PyOpenSSL-backed SSL-support.TN)�_validate_dependencies_met�PyOpenSSLContextr � SSLContext�ssl_� IS_PYOPENSSLr r r r r � s c C s t t_t tj_dt_dtj_dS )z4Undo monkey-patching by :func:`inject_into_urllib3`.FN)�orig_util_SSLContextr r/ r0 r1 r r r r r � s c C sR ddl m} t| dd�dkr$td��ddlm} |� }t|dd�dkrNtd��dS ) z{ Verifies that PyOpenSSL's package-level dependencies have been met. 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