How to communicate through a SOCKS5-proxy with UDP?

[sistux]

I need to get a communication with UDP through a SOCKS5 proxy like a UDP-client.
For that I use a QUdpSocket-object after the appropriate settings of the application proxy.
There are no problems for TCP-connection or the UDP-connection without the proxy-settings.
It should play a kind of ping-pong with udp-datagrams.
But with the wireshark can be seen that the only tcp-connection to the socks5-proxy will be established.
But after it there is no any activity:

• initially my application should send 1st udp-packet
• but after the write(..)-call nothing was sent from the application

Can somebody help me or give me some reference?
Thanks.

[ChrisW67]

How have you configured QNetworkProxy?

[sistux]

Thanks for reply.

The SOCKS-proxy is without authorisation
@
QNetworkProxy proxy;
proxy.setType(QNetworkProxy::Socks5Proxy);
proxy.setHostName(proxyAddress);
proxy.setPort(proxyPort);
QNetworkProxy::setApplicationProxy(proxy);
@

[sistux]

... :(