c++qtqnetworkaccessmanagerqnetworkreply

How can I receive a signal that QNAM started downloading a web page in Qt?

I use Qt 5.7, C++ for my crawler. I've created timeout management based on the
NetworkTimeouts class, implementation details (cpp).

I know that QNetworkAccessManager(QNAM) uses internal queue for URLs. How can I detect real download start and not just putting URL in the hidden queue? I call QNetworkAccessManager::get() in a loop (I don't wait for replyFinished() signal in order to push another URL). I need to start timer at the moment of real downloading. In Windows we have up to 6 parallel requests, others are waiting.

Solution

  • The QNetworkReply for a get() request should start emitting downloadProgress() when it starts working.