Update SNIMissingWarning text
SNI is an abbreviation for Server Name Indication, not Subject Name Indication
MODIFY
urllib3/util/ssl_.py
urllib3/util/ssl_.py
@@ -329,7 +329,7 @@ def ssl_wrap_socket(sock, keyfile=None, certfile=None, cert_reqs=None,
return context.wrap_socket(sock, server_hostname=server_hostname)
warnings.warn(
- 'An HTTPS request has been made, but the SNI (Subject Name '
+ 'An HTTPS request has been made, but the SNI (Server Name '
'Indication) extension to TLS is not available on this platform. '
'This may cause the server to present an incorrect TLS '
'certificate, which can cause validation failures. You can upgrade to '

Update SNIMissingWarning text

SNI is an abbreviation for Server Name Indication, not Subject Name Indication