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  • Hash : 5ecb6220
    Author : Edward Thomson
    Date : 2018-02-25T15:46:51

    winhttp: enable TLS 1.2 on Windows 7 and earlier
    
    Versions of Windows prior to Windows 8 do not enable TLS 1.2 by default,
    though support may exist.  Try to enable TLS 1.2 support explicitly on
    connections.
    
    This request may fail if the operating system does not have TLS 1.2
    support - the initial release of Vista lacks TLS 1.2 support (though
    it is available as a software update) and XP completely lacks TLS 1.2
    support.  If this request does fail, the HTTP context is still valid,
    and still maintains the original protocol support.  So we ignore the
    failure from this operation.