QNetworkAccessManager currently skips only "100 Continue" informational replies from HTTP servers. It does report other information replies as final results. This contradicts RFC 2616:
A client MUST be prepared to accept one or more 1xx status responses
prior to a regular response, even if the client does not expect a 100
(Continue) status message. Unexpected 1xx status responses MAY be
ignored by a user agent.
Ideally such informational responses would be reported to user somehow. Just discarding them all is fine too.