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"""
The _compat module is used for code which requires branching between different
Python environments. It is excluded from the code coverage checks.
"""
import ssl
import sys
# Brotli support is optional
# The C bindings in `brotli` are recommended for CPython.
# The CFFI bindings in `brotlicffi` are recommended for PyPy and everything else.
try:
import brotlicffi as brotli
except ImportError: # pragma: no cover
try:
import brotli
except ImportError:
brotli = None
if sys.version_info >= (3, 10) or (
sys.version_info >= (3, 7) and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0, 7)
):
def set_minimum_tls_version_1_2(context: ssl.SSLContext) -> None:
# The OP_NO_SSL* and OP_NO_TLS* become deprecated in favor of
# 'SSLContext.minimum_version' from Python 3.7 onwards, however
# this attribute is not available unless the ssl module is compiled
# with OpenSSL 1.1.0g or newer.
# https://docs.python.org/3.10/library/ssl.html#ssl.SSLContext.minimum_version
# https://docs.python.org/3.7/library/ssl.html#ssl.SSLContext.minimum_version
context.minimum_version = ssl.TLSVersion.TLSv1_2
else:
def set_minimum_tls_version_1_2(context: ssl.SSLContext) -> None:
# If 'minimum_version' isn't available, we configure these options with
# the older deprecated variants.
context.options |= ssl.OP_NO_SSLv2
context.options |= ssl.OP_NO_SSLv3
context.options |= ssl.OP_NO_TLSv1
context.options |= ssl.OP_NO_TLSv1_1
__all__ = ["brotli", "set_minimum_tls_version_1_2"]