Oauth2 SSO Broken after changes in build 2.155.0

[0x78f1935]

Version 2.154.0 seems also to be affected.

My SSO always worked. But since the release of 2.155.0 suddenly my SSO stopped working and keeps throwing a 523 status code with the error: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

Environment details

• OS type and version: Win11 x64
• Python version: Python 3.13.0
• pip version: pip 24.3.1
• google-api-python-client version: Version: 2.155.0
• Cable Internet (1gbs down/120mb up)

Steps to reproduce

1. ? Make sure to obtain an access token after login in on the SSO page from google
2. ? Build your credentials

from google.oauth2.credentials import Credentials

# serializer contains the access_token and scope obtained after succesful google login
credentials = Credentials(token=serializer.data['access_token'], scopes=serializer.data['scope'])

3. ? Apply credentials to service

from googleapiclient.discovery import build

# create the service we want to utilize
user_info_service = build(serviceName='oauth2', version='v2', credentials=credentials)

4. ? Make a request to obtain user info which the user gave consent for

# Try to obtain the user info which the user gave consent for
user_info = user_info_service.userinfo().get().execute()

Full Example:

from google.oauth2.credentials import Credentials
from googleapiclient.discovery import build

# serializer contains the access_token and scope obtained after succesful google login
credentials = Credentials(token=serializer.data['access_token'], scopes=serializer.data['scope'])
# create the service we want to utilize
user_info_service = build(serviceName='oauth2', version='v2', credentials=credentials)
# Try to obtain the user info which the user gave consent for
user_info = user_info_service.userinfo().get().execute()

The last step (4.) throws the error.

Workaround

I do have a workaround,

from google.oauth2.credentials import Credentials

credentials = Credentials(token=serializer.data['access_token'], scopes=serializer.data['scope'])

response = requests.get(
    "https://www.googleapis.com/oauth2/v2/userinfo",
    headers={"Authorization": f"Bearer {credentials.token}"}
)
user_info = response.json()

Edit: I do have to add that my workaround request takes a very long time to complete.

[0x78f1935]

I am going to close this issue, due lack of response. Perhaps google server just had hickups