Trouble with the SSL certificate of foldseek.steineggerlab.workers.dev

[sanjana1093]

I am trying to access downloads from Foldseek. Eg with: foldseek databases Alphafold/Proteome afdb tmp. However, I seem to be getting this error:

**curl: (60) SSL: no alternative certificate subject name matches target host name 'foldseek.steineggerlab.workers.dev'
More details here: https://curl.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
--2025-03-26 11:57:29-- https://foldseek.steineggerlab.workers.dev/afdb_proteome.tar.gz
Resolving foldseek.steineggerlab.workers.dev (foldseek.steineggerlab.workers.dev)... 131.169.64.56
Connecting to foldseek.steineggerlab.workers.dev (foldseek.steineggerlab.workers.dev)|131.169.64.56|:443... connected.
ERROR: no certificate subject alternative name matches
requested host name ‘foldseek.steineggerlab.workers.dev’.
To connect to foldseek.steineggerlab.workers.dev insecurely, use `--no-check-certificate'.
Error: Could not download https://foldseek.steineggerlab.workers.dev/afdb_proteome.tar.gz to tmp/2719415938595136457/afdb_proteome.tar.gz**

I asked our institute IT-team and they recommended that I write to you and the solution would be to update the SSL certificate to include the correct Subject Alternative Name (SAN) for foldseek.steineggerlab.workers.dev. Would that be possible to do? It would be really helpful if you could try to guide me as currently, I cannot access any of the downloads from my institute.

[milot-mirdita]

The server is hosted by cloudflare. We don't have direct control over its SSL certificate.

Installing foldseek through conda should install it together with a current version of aria2 and conda's SSL certificates, which should work no matter the curl version that is installed on your cluster.

[sanjana1093]

Thanks a lot for your reply. I did install it with conda. Also I tried wget without the check certificate to download the alphafold db database:

wget --no-check-certificate https://foldseek.steineggerlab.workers.dev/afdb_proteome.tar.gz

However, this also just returns a 54kb corrupted tar file that cannot be uncompressed. Would there be any other solutions? Thanks a lot in advance for your help