Unsuccessful Twitter callback causes connection to hang/timeout #3

If Twitter answers with a negative reply to the callback endpoint like the following:

http://example.org/callbackFromTwitter?redirectUrl=http%3A%2F%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.