QUdpSocket stops reading the port after some time if it sends messages to a closed port, how to fix it?

Question

Qt

I have a udp socket that I bind to a port and read/send data from it. Everything works well, BUT if I close the port where I send messages, the destination port is unreachable response logically begins to arrive and after a while the socket simply unbinds and even if you raise the server where it sent messages, it will no longer work (as well as accepting and send). I also need that even if the server where he sends messages lies, he still continued to send messages to him until he gets up. How quickly a socket is disconnected when the server is down depends on how many messages to send to it. Like found as this problem solves for WinSOCK:
DWORD dwBytesReturned = 0;
int bNewBehavior = 1;
if (::WSAIoctl(socket, SIO_UDP_CONNRESET, &bNewBehavior, sizeof(bNewBehavior),
NULL, 0, &dwBytesReturned, NULL, NULL) == SOCKET_ERROR) {
// not to worry isBogusUdpReadNotification() should handle this otherwise
int err = WSAGetLastError() ;
WS_ERROR_DEBUG(err);
}
The question is how to implement this for QUdpSocket