2 // System.Net.NetworkInformation.NetworkInterface
5 // Gonzalo Paniagua Javier (gonzalo@novell.com)
6 // Atsushi Enomoto (atsushi@ximian.com)
7 // Miguel de Icaza (miguel@novell.com)
8 // Eric Butler (eric@extremeboredom.net)
9 // Marek Habersack (mhabersack@novell.com)
10 // Marek Safar (marek.safar@gmail.com)
12 // Copyright (c) 2006-2008 Novell, Inc. (http://www.novell.com)
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.Collections.Generic;
35 using System.Collections;
37 using System.Net.Sockets;
38 using System.Runtime.InteropServices;
41 using System.Globalization;
43 namespace System.Net.NetworkInformation {
44 static class SystemNetworkInterface {
46 static readonly NetworkInterfaceFactory nif = NetworkInterfaceFactory.Create ();
48 public static NetworkInterface [] GetNetworkInterfaces ()
51 return nif.GetAllNetworkInterfaces ();
53 return new NetworkInterface [0];
57 public static bool InternalGetIsNetworkAvailable ()
63 public static int InternalLoopbackInterfaceIndex {
65 return nif.GetLoopbackInterfaceIndex ();
69 public static int InternalIPv6LoopbackInterfaceIndex {
71 throw new NotImplementedException ();
75 public static IPAddress GetNetMask (IPAddress address)
77 return nif.GetNetMask (address);
81 abstract class NetworkInterfaceFactory
83 internal abstract class UnixNetworkInterfaceAPI : NetworkInterfaceFactory
86 public static extern int if_nametoindex(string ifname);
89 protected static extern int getifaddrs (out IntPtr ifap);
92 protected static extern void freeifaddrs (IntPtr ifap);
95 class MacOsNetworkInterfaceAPI : UnixNetworkInterfaceAPI
97 const int AF_INET = 2;
98 const int AF_INET6 = 30;
99 const int AF_LINK = 18;
101 public override NetworkInterface [] GetAllNetworkInterfaces ()
103 var interfaces = new Dictionary <string, MacOsNetworkInterface> ();
105 if (getifaddrs (out ifap) != 0)
106 throw new SystemException ("getifaddrs() failed");
110 while (next != IntPtr.Zero) {
111 MacOsStructs.ifaddrs addr = (MacOsStructs.ifaddrs) Marshal.PtrToStructure (next, typeof (MacOsStructs.ifaddrs));
112 IPAddress address = IPAddress.None;
113 string name = addr.ifa_name;
115 byte[] macAddress = null;
116 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
118 if (addr.ifa_addr != IntPtr.Zero) {
120 MacOsStructs.sockaddr sockaddr = (MacOsStructs.sockaddr) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr));
122 if (sockaddr.sa_family == AF_INET6) {
123 MacOsStructs.sockaddr_in6 sockaddr6 = (MacOsStructs.sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in6));
124 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
125 } else if (sockaddr.sa_family == AF_INET) {
126 MacOsStructs.sockaddr_in sockaddrin = (MacOsStructs.sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in));
127 address = new IPAddress (sockaddrin.sin_addr);
128 } else if (sockaddr.sa_family == AF_LINK) {
129 MacOsStructs.sockaddr_dl sockaddrdl = new MacOsStructs.sockaddr_dl ();
130 sockaddrdl.Read (addr.ifa_addr);
132 macAddress = new byte [(int) sockaddrdl.sdl_alen];
133 // copy mac address from sdl_data field starting at last index pos of interface name into array macaddress, starting
135 Array.Copy (sockaddrdl.sdl_data, sockaddrdl.sdl_nlen, macAddress, 0, Math.Min (macAddress.Length, sockaddrdl.sdl_data.Length - sockaddrdl.sdl_nlen));
137 index = sockaddrdl.sdl_index;
139 int hwtype = (int) sockaddrdl.sdl_type;
140 if (Enum.IsDefined (typeof (MacOsArpHardware), hwtype)) {
141 switch ((MacOsArpHardware) hwtype) {
142 case MacOsArpHardware.ETHER:
143 type = NetworkInterfaceType.Ethernet;
146 case MacOsArpHardware.ATM:
147 type = NetworkInterfaceType.Atm;
150 case MacOsArpHardware.SLIP:
151 type = NetworkInterfaceType.Slip;
154 case MacOsArpHardware.PPP:
155 type = NetworkInterfaceType.Ppp;
158 case MacOsArpHardware.LOOPBACK:
159 type = NetworkInterfaceType.Loopback;
163 case MacOsArpHardware.FDDI:
164 type = NetworkInterfaceType.Fddi;
171 MacOsNetworkInterface iface = null;
173 // create interface if not already present
174 if (!interfaces.TryGetValue (name, out iface)) {
175 iface = new MacOsNetworkInterface (name, addr.ifa_flags);
176 interfaces.Add (name, iface);
179 // if a new address has been found, add it
180 if (!address.Equals (IPAddress.None))
181 iface.AddAddress (address);
183 // set link layer info, if iface has macaddress or is loopback device
184 if (macAddress != null || type == NetworkInterfaceType.Loopback)
185 iface.SetLinkLayerInfo (index, macAddress, type);
187 next = addr.ifa_next;
193 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
195 foreach (NetworkInterface thisInterface in interfaces.Values) {
196 result [x] = thisInterface;
202 public override int GetLoopbackInterfaceIndex ()
204 return if_nametoindex ("lo0");
207 public override IPAddress GetNetMask (IPAddress address)
210 if (getifaddrs (out ifap) != 0)
211 throw new SystemException ("getifaddrs() failed");
215 while (next != IntPtr.Zero) {
216 MacOsStructs.ifaddrs addr = (MacOsStructs.ifaddrs) Marshal.PtrToStructure (next, typeof (MacOsStructs.ifaddrs));
218 if (addr.ifa_addr != IntPtr.Zero) {
220 MacOsStructs.sockaddr sockaddr = (MacOsStructs.sockaddr) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr));
222 if (sockaddr.sa_family == AF_INET) {
223 MacOsStructs.sockaddr_in sockaddrin = (MacOsStructs.sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (MacOsStructs.sockaddr_in));
224 var saddress = new IPAddress (sockaddrin.sin_addr);
225 if (address.Equals (saddress))
226 return new IPAddress(((sockaddr_in)Marshal.PtrToStructure(addr.ifa_netmask, typeof(sockaddr_in))).sin_addr);
229 next = addr.ifa_next;
239 class LinuxNetworkInterfaceAPI : UnixNetworkInterfaceAPI
241 const int AF_INET = 2;
242 const int AF_INET6 = 10;
243 const int AF_PACKET = 17;
245 static void FreeInterfaceAddresses (IntPtr ifap)
248 AndroidPlatform.FreeInterfaceAddresses (ifap);
254 static int GetInterfaceAddresses (out IntPtr ifap)
257 return AndroidPlatform.GetInterfaceAddresses (out ifap);
259 return getifaddrs (out ifap);
263 public override NetworkInterface [] GetAllNetworkInterfaces ()
266 var interfaces = new Dictionary <string, LinuxNetworkInterface> ();
268 if (GetInterfaceAddresses (out ifap) != 0)
269 throw new SystemException ("getifaddrs() failed");
273 while (next != IntPtr.Zero) {
274 ifaddrs addr = (ifaddrs) Marshal.PtrToStructure (next, typeof (ifaddrs));
275 IPAddress address = IPAddress.None;
276 string name = addr.ifa_name;
278 byte[] macAddress = null;
279 NetworkInterfaceType type = NetworkInterfaceType.Unknown;
280 int nullNameCount = 0;
282 if (addr.ifa_addr != IntPtr.Zero) {
283 sockaddr_in sockaddr = (sockaddr_in) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in));
285 if (sockaddr.sin_family == AF_INET6) {
286 sockaddr_in6 sockaddr6 = (sockaddr_in6) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_in6));
287 address = new IPAddress (sockaddr6.sin6_addr.u6_addr8, sockaddr6.sin6_scope_id);
288 } else if (sockaddr.sin_family == AF_INET) {
289 address = new IPAddress (sockaddr.sin_addr);
290 } else if (sockaddr.sin_family == AF_PACKET) {
291 sockaddr_ll sockaddrll = (sockaddr_ll) Marshal.PtrToStructure (addr.ifa_addr, typeof (sockaddr_ll));
292 if (((int)sockaddrll.sll_halen) > sockaddrll.sll_addr.Length){
293 Console.Error.WriteLine ("Got a bad hardware address length for an AF_PACKET {0} {1}",
294 sockaddrll.sll_halen, sockaddrll.sll_addr.Length);
295 next = addr.ifa_next;
299 macAddress = new byte [(int) sockaddrll.sll_halen];
300 Array.Copy (sockaddrll.sll_addr, 0, macAddress, 0, macAddress.Length);
301 index = sockaddrll.sll_ifindex;
303 int hwtype = (int)sockaddrll.sll_hatype;
304 if (Enum.IsDefined (typeof (LinuxArpHardware), hwtype)) {
305 switch ((LinuxArpHardware)hwtype) {
306 case LinuxArpHardware.EETHER:
307 goto case LinuxArpHardware.ETHER;
309 case LinuxArpHardware.ETHER:
310 type = NetworkInterfaceType.Ethernet;
313 case LinuxArpHardware.PRONET:
314 type = NetworkInterfaceType.TokenRing;
317 case LinuxArpHardware.ATM:
318 type = NetworkInterfaceType.Atm;
321 case LinuxArpHardware.SLIP:
322 case LinuxArpHardware.CSLIP:
323 case LinuxArpHardware.SLIP6:
324 case LinuxArpHardware.CSLIP6:
325 type = NetworkInterfaceType.Slip;
328 case LinuxArpHardware.PPP:
329 type = NetworkInterfaceType.Ppp;
332 case LinuxArpHardware.LOOPBACK:
333 type = NetworkInterfaceType.Loopback;
337 case LinuxArpHardware.FDDI:
338 type = NetworkInterfaceType.Fddi;
341 case LinuxArpHardware.SIT:
342 case LinuxArpHardware.IPDDP:
343 case LinuxArpHardware.IPGRE:
344 case LinuxArpHardware.IP6GRE:
345 case LinuxArpHardware.TUNNEL6:
346 case LinuxArpHardware.TUNNEL:
347 type = NetworkInterfaceType.Tunnel;
354 LinuxNetworkInterface iface = null;
356 if (String.IsNullOrEmpty (name))
357 name = "\0" + (++nullNameCount).ToString ();
359 if (!interfaces.TryGetValue (name, out iface)) {
360 iface = new LinuxNetworkInterface (name);
361 interfaces.Add (name, iface);
364 if (!address.Equals (IPAddress.None))
365 iface.AddAddress (address);
367 if (macAddress != null || type == NetworkInterfaceType.Loopback) {
368 if (type == NetworkInterfaceType.Ethernet) {
369 if (Directory.Exists(iface.IfacePath + "wireless")) {
370 type = NetworkInterfaceType.Wireless80211;
373 iface.SetLinkLayerInfo (index, macAddress, type);
376 next = addr.ifa_next;
379 FreeInterfaceAddresses (ifap);
382 NetworkInterface [] result = new NetworkInterface [interfaces.Count];
384 foreach (NetworkInterface thisInterface in interfaces.Values) {
385 result [x] = thisInterface;
391 public override int GetLoopbackInterfaceIndex ()
393 return if_nametoindex ("lo");
396 public override IPAddress GetNetMask (IPAddress address)
398 foreach (ifaddrs networkInteface in GetNetworkInterfaces()) {
399 if (networkInteface.ifa_addr == IntPtr.Zero)
402 var sockaddr = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_addr, typeof(sockaddr_in));
404 if (sockaddr.sin_family != AF_INET)
407 if (!address.Equals(new IPAddress(sockaddr.sin_addr)))
410 var netmask = (sockaddr_in)Marshal.PtrToStructure(networkInteface.ifa_netmask, typeof(sockaddr_in));
411 return new IPAddress(netmask.sin_addr);
417 private static IEnumerable<ifaddrs> GetNetworkInterfaces()
419 IntPtr ifap = IntPtr.Zero;
422 if (GetInterfaceAddresses(out ifap) != 0)
426 while (next != IntPtr.Zero) {
427 var addr = (ifaddrs)Marshal.PtrToStructure(next, typeof(ifaddrs));
429 next = addr.ifa_next;
432 if (ifap != IntPtr.Zero)
433 FreeInterfaceAddresses(ifap);
439 class Win32NetworkInterfaceAPI : NetworkInterfaceFactory
441 private const string IPHLPAPI = "iphlpapi.dll";
443 [DllImport (IPHLPAPI, SetLastError = true)]
444 static extern int GetAdaptersAddresses (uint family, uint flags, IntPtr reserved, byte [] info, ref int size);
446 [DllImport (IPHLPAPI)]
447 static extern uint GetBestInterfaceEx (byte[] ipAddress, out int index);
449 unsafe static Win32_IP_ADAPTER_ADDRESSES [] GetAdaptersAddresses ()
451 byte [] bytes = null;
453 GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
454 bytes = new byte [len];
455 int ret = GetAdaptersAddresses (0, 0, IntPtr.Zero, bytes, ref len);
457 throw new NetworkInformationException (ret);
459 List<Win32_IP_ADAPTER_ADDRESSES> l = new List<Win32_IP_ADAPTER_ADDRESSES> ();
460 fixed (byte* ptr = bytes) {
461 Win32_IP_ADAPTER_ADDRESSES info;
462 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
463 info = new Win32_IP_ADAPTER_ADDRESSES ();
464 Marshal.PtrToStructure (p, info);
471 public override NetworkInterface [] GetAllNetworkInterfaces ()
473 // Win32_IP_ADAPTER_INFO [] ai = GetAdaptersInfo ();
474 Win32_IP_ADAPTER_ADDRESSES [] aa = GetAdaptersAddresses ();
475 NetworkInterface [] ret = new NetworkInterface [aa.Length];
476 for (int i = 0; i < ret.Length; i++)
477 ret [i] = new Win32NetworkInterface2 (aa [i]);
481 private static int GetBestInterfaceForAddress (IPAddress addr) {
483 SocketAddress address = new SocketAddress (addr);
484 int error = (int) GetBestInterfaceEx (address.m_Buffer, out index);
486 throw new NetworkInformationException (error);
492 public override int GetLoopbackInterfaceIndex ()
494 return GetBestInterfaceForAddress (IPAddress.Loopback);
497 public override IPAddress GetNetMask (IPAddress address)
499 throw new NotImplementedException ();
504 public abstract NetworkInterface [] GetAllNetworkInterfaces ();
505 public abstract int GetLoopbackInterfaceIndex ();
506 public abstract IPAddress GetNetMask (IPAddress address);
508 public static NetworkInterfaceFactory Create ()
510 #if MONOTOUCH || XAMMAC
511 return new MacOsNetworkInterfaceAPI ();
513 bool runningOnUnix = (Environment.OSVersion.Platform == PlatformID.Unix);
516 if (Platform.IsMacOS || Platform.IsFreeBSD)
517 return new MacOsNetworkInterfaceAPI ();
519 return new LinuxNetworkInterfaceAPI ();
523 Version windowsVer51 = new Version (5, 1);
524 if (Environment.OSVersion.Version >= windowsVer51)
525 return new Win32NetworkInterfaceAPI ();
528 throw new NotImplementedException ();
533 abstract class UnixNetworkInterface : NetworkInterface
536 protected IPv4InterfaceStatistics ipv4stats;
537 protected IPInterfaceProperties ipproperties;
541 protected List <IPAddress> addresses;
543 NetworkInterfaceType type;
545 internal UnixNetworkInterface (string name)
548 addresses = new List<IPAddress> ();
551 internal void AddAddress (IPAddress address)
553 addresses.Add (address);
556 internal void SetLinkLayerInfo (int index, byte[] macAddress, NetworkInterfaceType type)
558 //this.index = index;
559 this.macAddress = macAddress;
563 public override PhysicalAddress GetPhysicalAddress ()
565 if (macAddress != null)
566 return new PhysicalAddress (macAddress);
568 return PhysicalAddress.None;
571 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
573 bool wantIPv4 = networkInterfaceComponent == NetworkInterfaceComponent.IPv4;
574 bool wantIPv6 = wantIPv4 ? false : networkInterfaceComponent == NetworkInterfaceComponent.IPv6;
576 foreach (IPAddress address in addresses) {
577 if (wantIPv4 && address.AddressFamily == AddressFamily.InterNetwork)
579 else if (wantIPv6 && address.AddressFamily == AddressFamily.InterNetworkV6)
586 public override string Description {
590 public override string Id {
594 public override bool IsReceiveOnly {
595 get { return false; }
598 public override string Name {
602 public override NetworkInterfaceType NetworkInterfaceType {
606 [MonoTODO ("Parse dmesg?")]
607 public override long Speed {
614 internal int NameIndex {
616 return NetworkInterfaceFactory.UnixNetworkInterfaceAPI.if_nametoindex (Name);
622 // This class needs support from the libsupport.so library to fetch the
623 // data using arch-specific ioctls.
625 // For this to work, we have to create this on the factory above.
627 sealed class LinuxNetworkInterface : UnixNetworkInterface
629 //NetworkInterfaceType type;
631 string iface_operstate_path;
632 string iface_flags_path;
635 [DllImport ("__Internal")]
636 static extern int _monodroid_get_android_api_level ();
638 [DllImport ("__Internal")]
639 static extern bool _monodroid_get_network_interface_up_state (string ifname, ref bool is_up);
641 [DllImport ("__Internal")]
642 static extern bool _monodroid_get_network_interface_supports_multicast (string ifname, ref bool supports_multicast);
644 bool android_use_java_api;
647 internal string IfacePath {
648 get { return iface_path; }
651 internal LinuxNetworkInterface (string name)
654 iface_path = "/sys/class/net/" + name + "/";
655 iface_operstate_path = iface_path + "operstate";
656 iface_flags_path = iface_path + "flags";
658 android_use_java_api = _monodroid_get_android_api_level () >= 24;
662 public override IPInterfaceProperties GetIPProperties ()
664 if (ipproperties == null)
665 ipproperties = new LinuxIPInterfaceProperties (this, addresses);
669 public override IPv4InterfaceStatistics GetIPv4Statistics ()
671 if (ipv4stats == null)
672 ipv4stats = new LinuxIPv4InterfaceStatistics (this);
676 public override OperationalStatus OperationalStatus {
679 if (android_use_java_api) {
680 // Starting from API 24 (Android 7 "Nougat") Android restricts access to many
681 // files in the /sys filesystem (see https://code.google.com/p/android/issues/detail?id=205565
682 // for more information) and therefore we are forced to call into Java API in
683 // order to get the information. Alas, what we can obtain in this way is quite
684 // limited. In the case of OperationalStatus we can only determine whether the
685 // interface is up or down. There is a way to get more detailed information but
686 // it requires an instance of the Android Context class which is not available
689 if (_monodroid_get_network_interface_up_state (Name, ref is_up))
690 return is_up ? OperationalStatus.Up : OperationalStatus.Down;
692 return OperationalStatus.Unknown;
695 if (!Directory.Exists (iface_path))
696 return OperationalStatus.Unknown;
699 string s = ReadLine (iface_operstate_path);
703 return OperationalStatus.Unknown;
706 return OperationalStatus.NotPresent;
709 return OperationalStatus.Down;
711 case "lowerlayerdown":
712 return OperationalStatus.LowerLayerDown;
715 return OperationalStatus.Testing;
718 return OperationalStatus.Dormant;
721 return OperationalStatus.Up;
725 return OperationalStatus.Unknown;
729 public override bool SupportsMulticast {
732 if (android_use_java_api) {
733 // Starting from API 24 (Android 7 "Nougat") Android restricts access to many
734 // files in the /sys filesystem (see https://code.google.com/p/android/issues/detail?id=205565
735 // for more information) and therefore we are forced to call into Java API in
736 // order to get the information.
737 bool supports_multicast = false;
738 _monodroid_get_network_interface_supports_multicast (Name, ref supports_multicast);
739 return supports_multicast;
742 if (!Directory.Exists (iface_path))
746 string s = ReadLine (iface_flags_path);
747 if (s.Length > 2 && s [0] == '0' && s [1] == 'x')
750 ulong f = UInt64.Parse (s, NumberStyles.HexNumber);
752 // Hardcoded, only useful for Linux.
753 return ((f & 0x1000) == 0x1000);
760 internal static string ReadLine (string path)
762 using (FileStream fs = File.OpenRead (path)){
763 using (StreamReader sr = new StreamReader (fs)){
764 return sr.ReadLine ();
770 sealed class MacOsNetworkInterface : UnixNetworkInterface
772 private uint _ifa_flags;
774 internal MacOsNetworkInterface (string name, uint ifa_flags)
777 _ifa_flags = ifa_flags;
780 public override IPInterfaceProperties GetIPProperties ()
782 if (ipproperties == null)
783 ipproperties = new MacOsIPInterfaceProperties (this, addresses);
787 public override IPv4InterfaceStatistics GetIPv4Statistics ()
789 if (ipv4stats == null)
790 ipv4stats = new MacOsIPv4InterfaceStatistics (this);
794 public override OperationalStatus OperationalStatus {
796 if(((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_UP) == MacOsInterfaceFlags.IFF_UP){
797 return OperationalStatus.Up;
799 return OperationalStatus.Unknown;
803 public override bool SupportsMulticast {
805 return ((MacOsInterfaceFlags)_ifa_flags & MacOsInterfaceFlags.IFF_MULTICAST) == MacOsInterfaceFlags.IFF_MULTICAST;
811 class Win32NetworkInterface2 : NetworkInterface
813 [DllImport ("iphlpapi.dll", SetLastError = true)]
814 static extern int GetAdaptersInfo (byte [] info, ref int size);
816 [DllImport ("iphlpapi.dll", SetLastError = true)]
817 static extern int GetIfEntry (ref Win32_MIB_IFROW row);
819 public static Win32_IP_ADAPTER_INFO GetAdapterInfoByIndex (int index)
821 foreach (Win32_IP_ADAPTER_INFO info in GetAdaptersInfo ())
822 if (info.Index == index)
827 unsafe static Win32_IP_ADAPTER_INFO [] GetAdaptersInfo ()
829 byte [] bytes = null;
831 GetAdaptersInfo (bytes, ref len);
832 bytes = new byte [len];
833 int ret = GetAdaptersInfo (bytes, ref len);
836 throw new NetworkInformationException (ret);
838 List<Win32_IP_ADAPTER_INFO> l = new List<Win32_IP_ADAPTER_INFO> ();
839 fixed (byte* ptr = bytes) {
840 Win32_IP_ADAPTER_INFO info;
841 for (IntPtr p = (IntPtr) ptr; p != IntPtr.Zero; p = info.Next) {
842 info = new Win32_IP_ADAPTER_INFO ();
843 Marshal.PtrToStructure (p, info);
850 Win32_IP_ADAPTER_ADDRESSES addr;
851 Win32_MIB_IFROW mib4, mib6;
852 Win32IPv4InterfaceStatistics ip4stats;
853 IPInterfaceProperties ip_if_props;
855 internal Win32NetworkInterface2 (Win32_IP_ADAPTER_ADDRESSES addr)
858 mib4 = default (Win32_MIB_IFROW);
859 mib4.Index = addr.Alignment.IfIndex;
860 if (GetIfEntry (ref mib4) != 0)
861 mib4.Index = -1; // unavailable;
862 mib6 = default (Win32_MIB_IFROW);
863 mib6.Index = addr.Ipv6IfIndex;
864 if (GetIfEntry (ref mib6) != 0)
865 mib6.Index = -1; // unavailable;
866 ip4stats = new Win32IPv4InterfaceStatistics (mib4);
867 ip_if_props = new Win32IPInterfaceProperties2 (addr, mib4, mib6);
870 public override IPInterfaceProperties GetIPProperties ()
875 public override IPv4InterfaceStatistics GetIPv4Statistics ()
880 public override PhysicalAddress GetPhysicalAddress ()
882 byte [] bytes = new byte [addr.PhysicalAddressLength];
883 Array.Copy (addr.PhysicalAddress, 0, bytes, 0, bytes.Length);
884 return new PhysicalAddress (bytes);
887 public override bool Supports (NetworkInterfaceComponent networkInterfaceComponent)
889 switch (networkInterfaceComponent) {
890 case NetworkInterfaceComponent.IPv4:
891 return mib4.Index >= 0;
892 case NetworkInterfaceComponent.IPv6:
893 return mib6.Index >= 0;
898 public override string Description {
899 get { return addr.Description; }
901 public override string Id {
902 get { return addr.AdapterName; }
904 public override bool IsReceiveOnly {
905 get { return addr.IsReceiveOnly; }
907 public override string Name {
908 get { return addr.FriendlyName; }
910 public override NetworkInterfaceType NetworkInterfaceType {
911 get { return addr.IfType; }
913 public override OperationalStatus OperationalStatus {
914 get { return addr.OperStatus; }
916 public override long Speed {
917 get { return mib6.Index >= 0 ? mib6.Speed : mib4.Speed; }
919 public override bool SupportsMulticast {
920 get { return !addr.NoMulticast; }