problem was found ! Because of Qt 5.12 have problem . Im uninstall and install Qt 5.10 and it work well :D tks all

I've got the same situation on my iMX6 with Yocto Rocko. Any solution for this issue? Is the same situation on new release Sumo or Thud?

Hi, this post might help you, basically it says you should check you've copied also the Qt4Core.dll, Qt4Gui.dll etc. to your bin directory.

It's because Qt (or rather QSslSocket) closes the connection immediately after emitting the error() signal.

mcosta, Yes, found it - not too blind but too stupid :) thank you