networking - Desktop Computer - Detecting type of internet connection -


is there way detect if computer connected via cable or mobile network internet?

i tried analyze trace-route output realized need large , up-to-date database detect type of network data packages take.

have 2 different types of network maybe different attributes detect?

you can use networklistmanager apis find if network connected internet. example below both , checks see if network free. can remove cost related code:

hresult getfreeinternetinterface(_out_ guid* pinterfaceguid) {     bool fcoinitialized = false;     hresult hr = coinitializeex(null, coinit_multithreaded);     if (succeeded(hr))     {         fcoinitialized = true;         ccomptr<inetworklistmanager> pnetworklistmanager;          hr = pnetworklistmanager.cocreateinstance(__uuidof(networklistmanager));         if (succeeded(hr))         {             ccomptr<ienumnetworkconnections> pnetworkconnections;             hr = pnetworklistmanager->getnetworkconnections(&pnetworkconnections);              bool ffound = false;             while (succeeded(hr))             {                 ccomptr<inetworkconnection> pnetworkconnection;                 hr = pnetworkconnections->next(1, &pnetworkconnection, nullptr);                 if (hr == s_ok)                 {                     ccomptr<inetworkconnectioncost> pnetworkconnectioncost;                     hr = pnetworkconnection.queryinterface(&pnetworkconnectioncost);                      if (succeeded(hr))                     {                         nlm_connectivity nlmconnectivity = nlm_connectivity_disconnected;                         dword dwcost = nlm_connection_cost_unknown;                         if (succeeded(pnetworkconnection->getconnectivity(&nlmconnectivity)) &&                             (nlmconnectivity & (nlm_connectivity_ipv4_internet | nlm_connectivity_ipv6_internet)) != 0 &&                             succeeded(pnetworkconnectioncost->getcost(&dwcost)) &&                             dwcost == nlm_connection_cost_unrestricted &&                             succeeded(pnetworkconnection->getadapterid(pinterfaceguid)))                         {                             ffound = true;                             break;                         }                     }                 }                 else hr = e_nointerface;             }              if (succeeded(hr) && !ffound)                 hr = e_nointerface;         }     }     if (fcoinitialized) couninitialize();     return hr; }

once have interface guid , ip helper apis interface type. here code had looks non-cellular networks. can take , modify need:

bool getadapteraddresses(     _out_ pip_adapter_addresses * ppiaa     ) {     *ppiaa = null;      dword len = 0;     dword flags = gaa_flag_skip_anycast|gaa_flag_skip_multicast|gaa_flag_skip_dns_server;     if (getadaptersaddresses(af_unspec, flags, null, null, &len) != error_buffer_overflow)         return false;      pip_adapter_addresses piaa = (pip_adapter_addresses)localalloc(lptr, len);     if (piaa) {         getadaptersaddresses(af_unspec, flags, null, piaa, &len);         *ppiaa = piaa;         return true;     }     return false; }  bool isnoncellulariftype(     _in_ iftype iftype     ) {     return // ignore loopback , wwan         iftype != if_type_software_loopback &&         iftype != if_type_wwanpp &&         iftype != if_type_wwanpp2; }  dword getnoncellularifindex(     ) {     dword ifindex = (dword)(-1);     pip_adapter_addresses piaa;     if (getadapteraddresses(&piaa)) {         pip_adapter_addresses piaalist = piaa;         while (piaa) {             // non-cellular interface             if (piaa->operstatus == ifoperstatusup &&                 isnoncellulariftype(piaa->iftype)) {                 pip_adapter_unicast_address_lh punicastaddr = piaa->firstunicastaddress;                 // through unicast addresses valid ipv4 or ipv6 addresses                 while (punicastaddr) {                     lpsockaddr paddr = punicastaddr->address.lpsockaddr;                     if (paddr->sa_family == af_inet) {                         if (!in4_is_addr_linklocal(&((sockaddr_in *)paddr)->sin_addr)) {                             ifindex = piaa->ifindex;                             break;                         }                     }                     else if (paddr->sa_family == af_inet6) {                         if (!in6_is_addr_linklocal(&((sockaddr_in6 *)paddr)->sin6_addr)) {                             ifindex = piaa->ifindex;                             break;                         }                     }                     punicastaddr = punicastaddr->next;                 }                 // no need keep looking more?                 if (ifindex != (dword)(-1))                     break; // while (piaa)             }             piaa = piaa->next;         }          localfree(piaalist);     }     return ifindex; }

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