QNetworkAccessManager help needed! Class problem...

[wysota]

It's the only way I can do it...

No, it's not, you just have to change the way you think.

Because that's a checkpoint I need to check if the info is correct, otherwise I need to stop the server and clean some stuff in other classes.

It doesn't mean your program has to "wait" before "returning to the tcpserver class". Especially since you're in a constructor.

So I need the program to stay on http2 until it has an answer and then return it to tcpserver class...

No, you don't. You only need to execute code B after code A is complete. It doesn't mean you have to wait for anything.

I can't just throw the rest of the program in a new custom slot and activate it by a signal...

Why not?

The solution I made is not working the program is always in the while loop and nothing happens then.

It won't work. You don't have an event loop running, no networking operations can ever complete this way.