We’re sometimes getting a “httpx._exceptions.NetworkError: certificate verification failed (_ssl.c:2607)” error when trying to get data from a URL of the form https://<PRISMIC_REPO>.cdn.prismic.io/api/v2
Has anyone seen anything similar or any idea what could be causing this?
The only thing I could myself guess could cause this would be some sort of issue with the SSL/TLS certificate on one or a few of the servers hosting the CDN. However at least a full scan by https://www.ssllabs.com/ssltest/analyze.html couldn’t find any issue. And to make things harder this seems to happen really rarely.
I’ve now temporarily added a retry loop so that it’ll just retry a few times if it fails, but would be nice to figure out what the real reason is.
We’ve built our own integration using Python and the httpx library (version 0.12.1); not that I think it likely matters that much based on the error message. Neither do I think the trace will help, but posting it as well for completeness.
httpx._exceptions.NetworkError: certificate verification failed (_ssl.c:2607)
at as_network_error (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_utils.py:368)
at exit (/usr/local/lib/python3.8/contextlib.py:131)
at read (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_backends/asyncio.py:130)
at _receive_event (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/http11.py:174)
at _receive_response (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/http11.py:127)
at send (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/http11.py:52)
at send (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/connection.py:44)
at send (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/connection_pool.py:153)
at send (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_dispatch/connection_pool.py:157)
at send_single_request (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1196)
at send_handling_auth (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1170)
at send_handling_redirects (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1133)
at send (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1106)
at request (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1085)
at get (/.venv/backend-XIEYiin6-py3.8/lib/python3.8/site-packages/httpx/_client.py:1224)
…(references to our own code)