web site is down?

[OverlordYashSrivastav1]

c:\Robot>rosdep init
ERROR: cannot download default sources list from:
https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list
Website may be down.

[sloretz]

I seem the same issue on ubuntu:focal in a github action. I can curl the URL, but python3-rosdep fails to download it. I see this on armhf only.

STEP 4/7: RUN curl -S https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100   588  100   588    0     0   3340      0 --:--:-- --:--:-- --:--:--  3520
# os-specific listings first
yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml osx
# generic
yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml
yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml
yaml https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml
gbpdistro https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml fuerte
# newer distributions (Groovy, Hydro, ...) must not be listed anymore, they are being fetched from the rosdistro index.yaml instead
STEP 5/7: RUN bash -c 'for i in {1..5}; do rosdep init && break || sleep 15; done'
ERROR: cannot download default sources list from:
https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-default.list
Website may be down.

[sloretz]

I think it's coming from the URLError case here, since that case doesn't print the error message :(

rosdep/src/rosdep2/main.py

Lines 604 to 606 in 5ca91b8

	except URLError as e:
	print('ERROR: cannot download default sources list from:\n%s\nWebsite may be down.' % (DEFAULT_SOURCES_LIST_URL), file=sys.stderr)
	return 4

[sloretz]

Forgive me for the screenshot of text, but I don't have copy/paste working in my VM. The root cause appears to be an SSL issue

[sloretz]

Resolved on my machine by running sudo update-ca-certificates --fresh before rosdep init on ubuntu:focal armhf.