c# - Windows and Detecting Captive Portals -


trying detect when captive portal in use on internet connection i.e laptop connected @ coffee shop.

trying achieve using network list manager com object:

networklist.networklistmanager _networklistmanager = new networklistmanager(); foreach (inetworkconnection net in _networklistmanager.getnetworkconnections()) {                     if (net.getconnectivity().hasflag(nlm_connectivity.nlm_connectivity_ipv4_internet) == true)       {            // check if connected captive web portal            // using nlm_internet_connectivity_webhijack       }                                  }

according documentation here: http://msdn.microsoft.com/en-us/library/windows/desktop/aa370750(v=vs.85).aspx

"these connectivity flags can retrieved querying na_internetconnectivityv4 or na_internetconnectivityv6 properties using ipropertybag interface inetwork or inetworkconnection interface"

i appears na_internetconnectivityv4 enumerations not present (incomplete implementation) or don't know how work them.

has used or have ideas on ways detect when captive portal in use?

this not c# found apis working on c++

pnetworklistmanager->getnetworks (nlm_enum_network_connected, &penum) inetwork *pinetwork;

//should loop through possible networks. hresult hr = penum->next(1, &pinetwork, nullptr);  ipropertybag *pnetworkpropertybag; hresult hrqueryinterface = pinetwork->queryinterface(iid_ipropertybag, (lpvoid*)&pnetworkpropertybag); if (succeeded(hrqueryinterface 1) && pnetworkpropertybag != nullptr) {     nlm_connectivity networkconnectivity;     variant variantconnectivity;      if (succeeded(pinetwork->getconnectivity(&networkconnectivity)))     {         if ((networkconnectivity &          nlm_connectivity_ipv4_internet) == nlm_connectivity_ipv4_internet)         {             variantinit(&variantconnectivity);             if (succeeded(pnetworkpropertybag->read(na_internetconnectivityv4, &variantconnectivity, nullptr)) && (v_uint(&variantconnectivity) & nlm_internet_connectivity_webhijack) == nlm_internet_connectivity_webhijack)             {                 //captive portal detected             }             variantclear(&variantconnectivity);     } }

check full details: http://www.codeproject.com/articles/1088221/captive-portal-detection-with-windows-apis


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