File: //opt/alt/python38/lib/python3.8/site-packages/urllib3/util/__pycache__/ssltransport.cpython-38.pyc
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implement TLS within TLS.
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Raises a ProxySchemeUnsupported if the provided ssl_context can't be used
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Python's httpclient uses makefile and buffered io when reading HTTP
messages and we need to support it.
This is unfortunately a copy and paste of socket.py makefile with small
changes to point to the socket directly.
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