问题
Up until yesterday afternoon users of our application could logout from Google via our application by pressing a "Log out"-button. The button would log the user out by directing the browser to "https://www.google.com/accounts/Logout?continue=https://appengine.google.com/_ah/logout?continue=https://www.example.com". Google would redirect the browser to https://appengine.google.com/_ah/logout which in turn would take the user back to the application https://www.example.com.
Now the user instead gets redirected to "https://www.google.com/url?sa=D&q=https://www.example.com" in which the user must click a link to get to the application.
Why did this change?
We use the answer from this question
回答1:
So I tried the log out-button again after the weekend and it now works like before. The only explanation I can see is that Google somehow fixed their services somewhere.
来源：https://stackoverflow.com/questions/53116671/why-did-https-appengine-google-com-ah-logout-redirect-stop-working