Unit tests fail to download files from dataserver when in homeoffice

[LukasBeiske]

When I try to run the unit tests while in homeoffice the download of the needed files from the dataserver is very slow to the point of failing to download some files resulting in multiple errors like:

ERROR ctapipe/io/tests/test_eventseeker.py - requests.exceptions.ConnectionError: HTTPConnectionPool(host='cccta-dataserver.in2p3.fr', port=80): Read timed out.

Apparently this is related to the IP address trying to download the data, since this does not happen when I am in the office (using the same machine).

[maxnoe]

I also encountered this issue in the past and could only solve it by using a VPN.

@bregeon couldn't help if I remember correctly, since he doesn't have control over the external firewall at in2p3 or whatever else is causing these issues

[kosack]

We actually have a new data server being set up at DESY, so we can at some point drop CCin2p3 and have more control... For now probably there is nothing we can do. Maybe there is some blocklist set up there now, as for me at home it works fine.

[maxnoe]

You're in France...

[kosack]

You're in France...

Though it works from GitHub's CI, which probably isn't. But yes, it's likely they block some IPs (GitHub is likely an exception)

[maxnoe]

it's likely they block some IPs

It's not completely blocked, just very very slow, I get something like 20 kB/s at home without VPN, and 4 MB/s with VPN.

My home is ~2 km away from the university...