In some cases when a session isn't needed (i.e. for localhost), the
session is not opened at all. If a program (e.g. our tests) redirects
from localhost to a different system (e.g. the qt network test
servers, or the internet) it will wait for a session forever. So, we
need to check if a session is needed for the redirect-target and then
open one. It is usually opened in
QNetworkReplyHttpImplPrivate::_q_startOperation
Change-Id: Id3b78182a3fb3f63f0235ecb1fb665df8bd0c4ca
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
8a39384e90