<![CDATA[QHostInfo::lookup & QHostInfo::HostNotFound]]>Hi, can we find out if a machine is live using QHostInfo? (I want to ping somehow ICMP request requires raw tcp and root privileges I guess) QHostInfo::lookUp and QHostInfo::HostNotFound don't work for me How can I do this for Android ios

]]>https://forum.qt.io/topic/130859/qhostinfo-lookup-qhostinfo-hostnotfoundRSS for NodeSat, 18 Apr 2026 13:02:23 GMTTue, 05 Oct 2021 13:05:42 GMT60<![CDATA[Reply to QHostInfo::lookup & QHostInfo::HostNotFound on Tue, 05 Oct 2021 18:09:08 GMT]]>Hi,

The most usual way to do that is to run the ping command using QProcess.

]]>https://forum.qt.io/post/683675https://forum.qt.io/post/683675Tue, 05 Oct 2021 18:09:08 GMT<![CDATA[Reply to QHostInfo::lookup & QHostInfo::HostNotFound on Tue, 05 Oct 2021 15:48:49 GMT]]> QHostInfo hi = QHostInfo::fromName("192.168.1.44"); if(hi.error() == hi.NoError) { qDebug() << "OK"; } if(hi.error() == hi.HostNotFound) { qDebug() << "Host not found"; }

Isn't work for me

]]>https://forum.qt.io/post/683665https://forum.qt.io/post/683665Tue, 05 Oct 2021 15:48:49 GMT