[petsc-dev] We have SSL problems with some sites

[Jed Brown]

Matthew Knepley <knepley at gmail.com> writes:

> I fail when retrieving GMP, and I get
>
>  4next $:/PETSc3/petsc/petsc-dev$ wget --secure-protocol=TLSv1
> https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 .
> wget --secure-protocol=TLSv1
> https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 .

I don't know what you're trying to do here.  wget doesn't take a local
directory argument.

I don't have a problem fetching this file with wget.  Yours might be
configured incorrectly (e.g., doesn't have access to root certs).

I also don't understand why you would want to downgrade security to
TLSv1.  It's vulnerable and shouldn't exist anymore except to support
antique clients.

> --2018-03-21 21:33:42--  https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2
> Resolving gmplib.org (gmplib.org)... 130.242.124.102
> Connecting to gmplib.org (gmplib.org)|130.242.124.102|:443... connected.
> Unable to establish SSL connection.
> --2018-03-21 21:33:43--  http://./
> Resolving . (.)... failed: nodename nor servname provided, or not known.
> wget: unable to resolve host address `.'
>  4next $:/PETSc3/petsc/petsc-dev$ wget --no-check-certificate
> https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 .
> wget --no-check-certificate
> https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 .
> --2018-03-21 21:34:20--  https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2
> Resolving gmplib.org (gmplib.org)... 130.242.124.102
> Connecting to gmplib.org (gmplib.org)|130.242.124.102|:443... connected.
> Unable to establish SSL connection.
> --2018-03-21 21:34:20--  http://./
> Resolving . (.)... failed: nodename nor servname provided, or not known.
> wget: unable to resolve host address `.'
>  130next $:/PETSc3/petsc/petsc-dev$ curl
> https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 > gmp-6.0.0a.tar.bz2
> curl https://gmplib.org/download/gmp/gmp-6.0.0a.tar.bz2 > gmp-6.0.0a.tar.bz2
>   % Total    % Received % Xferd  Average Speed   Time    Time     Time
> Current
>                                  Dload  Upload   Total   Spent    Left
> Speed
> 100 2265k  100 2265k    0     0   288k      0  0:00:07  0:00:07 --:--:--
> 408k
> next $:/PETSc3/petsc/petsc-dev$ file gmp-6.0.0a.tar.bz2
> file gmp-6.0.0a.tar.bz2
> gmp-6.0.0a.tar.bz2: bzip2 compressed data, block size = 900k
>
> on my Mac.
>
>    Matt
>
> -- 
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
> https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>