Mtls authentication with Qt webengine

[sergey.borovkov]

Is there a simple way to do mtls authentication with a webengine page?

Back in the days of webkit I guess I could have just change QSSlSocket options to handle certificate and the key.
But Qt Webengine has its own network stack.
Any authentication goes through QWebEnginePage::authenticationRequired it seems.
But I don't have any access to SSL there.