c++ - How to detect internet connection state with Qt 5.4 on OS X Yosemite 10.10.3? -


i'm trying check internet connection state qt 5.4 on os x yosemite 10.10.3, every time run code result connected, although i'm not connected anything.

bool networkaccessmanager::currentconnectivitystatus() {     qnetworkaccessmanager *namanager = new qnetworkaccessmanager(this);     switch (namanager->networkaccessible()) {     case qnetworkaccessmanager::unknownaccessibility:         kdebug() << q_func_info << "qnetworkaccessmanager::unknownaccessibility";         break;     case qnetworkaccessmanager::notaccessible:         kdebug() << q_func_info << "qnetworkaccessmanager::notaccessible";         break;     case qnetworkaccessmanager::accessible:         kdebug() << q_func_info << "qnetworkaccessmanager::accessible";         break;     default:         break;     }      qnetworkconfigurationmanager manager;         kdebug()<< q_func_info << " network connection " << manager.isonline();      qnetworkconfiguration cfg = manager.defaultconfiguration();     qnetworksession *session = new qnetworksession(cfg);     session->open();     session->waitforopened();      if(session->isopen())     {         switch (session->state()) {         case qnetworksession::connected:             kdebug() << q_func_info << "qnetworksession::connected";             break;         case qnetworksession::disconnected:             kdebug() << q_func_info << "qnetworksession::disconnect";             break;         default:             break;         }     } }

and here result above when disconnect everything

debug 2015-04-25t16:00:59.560 bool networkaccessmanager::currentconnectivitystatus() qnetworkaccessmanager::accessible  debug 2015-04-25t16:00:59.560 bool networkaccessmanager::currentconnectivitystatus()  network connection ok  true  debug 2015-04-25t16:00:59.560 bool networkaccessmanager::currentconnectivitystatus() qnetworksession::connected

pinging c/c++ program here how ping external server, implement , if pings return true , if not, false.


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