If Twitter answers with a negative reply to the callback endpoint like the following:
http://example.org/callbackFromTwitter?redirectUrl=https%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttp%2Fexample.org%2F&denied=XXXXX
the server connection hangs and the server seems to send no data. (Other connections are unaffected)
Instead the server should render a proper error page or just redirect to the homepage.