Function has_tls_protocol

Lib/test/test_ssl.py:168–186

Check if a TLS protocol is available and enabled :param protocol: enum ssl._SSLMethod member or name :return: bool

(protocol)

def has_tls_protocol(protocol):
    """Check if a TLS protocol is available and enabled

    :param protocol: enum ssl._SSLMethod member or name
    :return: bool
    """
    if isinstance(protocol, str):
        assert protocol.startswith('PROTOCOL_')
        protocol = getattr(ssl, protocol, None)
        if protocol is None:
            return False
    if protocol in {
        ssl.PROTOCOL_TLS, ssl.PROTOCOL_TLS_SERVER,
        ssl.PROTOCOL_TLS_CLIENT
    }:
        # auto-negotiate protocols are always available
        return True
    name = protocol.name
    return has_tls_version(name[len('PROTOCOL_'):])


@functools.lru_cache