On 15/07/2022 3:08 pm, Mark Brethen wrote:
~ $ /usr/bin/curl -L -v -o tetgen1.5.1.tar.gz https://wias-berlin.de/software/tetgen/1.5/src/tetgen1.5.1.tar.gz <https://wias-berlin.de/software/tetgen/1.5/src/tetgen1.5.1.tar.gz>   % Total    % Received % Xferd  Average Speed   Time    Time     Time Current                                  Dload  Upload   Total   Spent    Left Speed   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0*   Trying 62.141.177.111...
* TCP_NODELAY set
* Connected to wias-berlin.de <http://wias-berlin.de> (62.141.177.111) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/cert.pem
   CApath: none
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
} [228 bytes data]
* TLSv1.2 (IN), TLS handshake, Server hello (2):
{ [59 bytes data]
* TLSv1.2 (IN), TLS handshake, Certificate (11):
{ [6122 bytes data]
* TLSv1.2 (IN), TLS alert, handshake failure (552):
{ [2 bytes data]
* error:14008410:SSL routines:CONNECT_CR_KEY_EXCH:sslv3 alert handshake failure   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
* Closing connection 0
curl: (35) error:14008410:SSL routines:CONNECT_CR_KEY_EXCH:sslv3 alert handshake failure

Other than updating the system from High Sierra, nothing else. It sounds like I may need to update my certificates?

Oh.... You said you where on macOS 11... I guess that was incorrect and you really mean OSX 10.11 or.... what ? High Sierra is OSX 10.13 ... Please try and be precise in your OS version as in this case it really makes a difference...

So, assuming you are on 10.11, or 10.13... That OS is indeed old and known to have SSL issues. The best solution is indeed to upgrade to a newer OS (for many many reasons...)

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