Stop relying on stdlib hostname matching until hostname_checks_common_name bug fixed
I can't make hostname_checks_common_name work, either locally or on
GitHub Actions, so stop using the standard library to match hostnames
for now.
Per this is a bug in CPython ssl module
and will likely be available in 3.10.0-alpha7 of CPython
MODIFY
src/urllib3/connection.py
src/urllib3/connection.py
@@ -370,8 +370,10 @@ class HTTPSConnection(HTTPConnection):
# We still support OpenSSL 1.0.2, which prevents us from verifying
# hostnames easily: https://github.com/pyca/pyopenssl/pull/933
or ssl_.IS_PYOPENSSL
- # Python 3.6 can't disable commonName checks
- or not hasattr(self.ssl_context, "hostname_checks_common_name")
+ # context.hostname_checks_common_name seems ignored, and it's more
+ # important to reject certs without SANs than to rely on the standard
+ # libary. See https://bugs.python.org/issue43522 for details.
+ or True
):
self.ssl_context.check_hostname = False

Stop relying on stdlib hostname matching until hostname_checks_common_name bug fixed

I can't make hostname_checks_common_name work, either locally or on
GitHub Actions, so stop using the standard library to match hostnames
for now.

Per https://bugs.python.org/issue43522 this is a bug in CPython ssl module
and will likely be available in 3.10.0-alpha7 of CPython