void FindNetworkInterfaces()
{
var nics = NetworkInterface.GetAllNetworkInterfaces()
.Where(nic => nic.OperationalStatus == OperationalStatus.Up)
.Where(nic => nic.NetworkInterfaceType != NetworkInterfaceType.Loopback)
.Where(nic => nic.SupportsMulticast)
.Where(nic => !knownNics.Any(k => k.Id == nic.Id))
.ToArray();
foreach (var nic in nics)
{
lock (socketLock)
{
if (socket == null)
{
return;
}
IPInterfaceProperties properties = nic.GetIPProperties();
if (ip6)
{
var interfaceIndex = properties.GetIPv6Properties().Index;
var mopt = new IPv6MulticastOption(MulticastAddressIp6, interfaceIndex);
socket.SetSocketOption(
SocketOptionLevel.IPv6,
SocketOptionName.AddMembership,
mopt);
maxPacketSize = Math.Min(maxPacketSize, properties.GetIPv6Properties().Mtu - packetOverhead);
}
else
{
var interfaceIndex = properties.GetIPv4Properties().Index;
var mopt = new MulticastOption(MulticastAddressIp4, interfaceIndex);
socket.SetSocketOption(
SocketOptionLevel.IP,
SocketOptionName.AddMembership,
mopt);
maxPacketSize = Math.Min(maxPacketSize, properties.GetIPv4Properties().Mtu - packetOverhead);
}
knownNics.Add(nic);
}
}
// Tell others.
if (nics.Length > 0)
{
lock (socketLock)
{
if (socket == null)
{
return;
}
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = nics
});
}
}
}
void FindNetworkInterfaces()
{
var currentNics = GetNetworkInterfaces().ToList();
var newNics = new List <NetworkInterface>();
var oldNics = new List <NetworkInterface>();
lock (senderLock)
{
foreach (var nic in knownNics.Where(k => !currentNics.Any(n => k.Id == n.Id)))
{
oldNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Removed nic '{nic.Name}'.");
}
}
foreach (var nic in currentNics.Where(nic => !knownNics.Any(k => k.Id == nic.Id)))
{
newNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Found nic '{nic.Name}'.");
}
}
}
knownNics = currentNics;
// If any NIC change, then get new sockets.
if (newNics.Any() || oldNics.Any())
{
// Recreate the sender
if (sender != null)
{
sender.Dispose();
}
sender = new UdpClient(mdnsEndpoint.AddressFamily);
sender.JoinMulticastGroup(mdnsEndpoint.Address);
sender.MulticastLoopback = true;
// Start a task to listen for MDNS messages.
Listener();
}
// Tell others.
if (newNics.Any())
{
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = newNics
});
}
}
void FindNetworkInterfaces()
{
var currentNics = GetNetworkInterfaces().ToList();
var newNics = new List <NetworkInterface>();
var oldNics = new List <NetworkInterface>();
lock (senderLock)
{
foreach (var nic in knownNics.Where(k => !currentNics.Any(n => k.Id == n.Id)))
{
oldNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Removed nic '{nic.Name}'.");
}
}
foreach (var nic in currentNics.Where(nic => !knownNics.Any(k => k.Id == nic.Id)))
{
newNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Found nic '{nic.Name}'.");
}
}
}
knownNics = currentNics;
// If any NIC change, then get new sockets.
if (newNics.Any() || oldNics.Any())
{
RecreateSender();
RecreateReceiver();
}
// Tell others.
if (newNics.Any())
{
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = newNics
});
}
}
void FindNetworkInterfaces()
{
log.Debug("Finding network interfaces");
try
{
var currentNics = GetNetworkInterfaces().ToList();
var newNics = new List <NetworkInterface>();
var oldNics = new List <NetworkInterface>();
foreach (var nic in knownNics.Where(k => !currentNics.Any(n => k.Id == n.Id)))
{
oldNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Removed nic '{nic.Name}'.");
}
}
foreach (var nic in currentNics.Where(nic => !knownNics.Any(k => k.Id == nic.Id)))
{
newNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Found nic '{nic.Name}'.");
}
}
knownNics = currentNics;
// Only create client if something has change.
if (newNics.Any() || oldNics.Any())
{
client?.Dispose();
client = new MulticastClient(UseIpv4, UseIpv6, networkInterfacesFilter?.Invoke(knownNics) ?? knownNics);
client.MessageReceived += OnDnsMessage;
}
// Tell others.
if (newNics.Any())
{
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = newNics
});
}
// Magic from @eshvatskyi
//
// I've seen situation when NetworkAddressChanged is not triggered
// (wifi off, but NIC is not disabled, wifi - on, NIC was not changed
// so no event). Rebinding fixes this.
//
NetworkChange.NetworkAddressChanged -= OnNetworkAddressChanged;
NetworkChange.NetworkAddressChanged += OnNetworkAddressChanged;
}
catch (Exception e)
{
log.Error("FindNics failed", e);
}
}
void FindNetworkInterfaces()
{
Log.LogDebug("Finding network interfaces");
try
{
var currentNics = GetNetworkInterfaces().ToList();
var newNics = new List <NetworkInterface>();
var oldNics = new List <NetworkInterface>();
foreach (var nic in _knownNics.Where(k => !currentNics.Any(n => k.Id == n.Id)))
{
oldNics.Add(nic);
Log.LogDebug($"Removed nic '{nic.Name}'.");
}
foreach (var nic in currentNics.Where(nic => !_knownNics.Any(k => k.Id == nic.Id)))
{
newNics.Add(nic);
Log.LogDebug($"Found nic '{nic.Name}'.");
}
_knownNics = currentNics;
// Only create client if something has change.
if (newNics.Any() || oldNics.Any())
{
_client?.Dispose();
_client = new MulticastClient(UseIpv4, UseIpv6, _networkInterfacesFilter?.Invoke(_knownNics) ?? _knownNics);
_client.MessageReceived += OnDnsMessage;
}
// Tell others.
if (newNics.Any())
{
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = newNics
});
}
// Magic from @eshvatskyi
//
// I've seen situation when NetworkAddressChanged is not triggered
// (wifi off, but NIC is not disabled, wifi - on, NIC was not changed
// so no event). Rebinding fixes this.
//
// Do magic only on Windows.
#if NET461
if (Environment.OSVersion.Platform.ToString().StartsWith("Win"))
#else
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
#endif
{
NetworkChange.NetworkAddressChanged -= OnNetworkAddressChanged;
NetworkChange.NetworkAddressChanged += OnNetworkAddressChanged;
}
}
catch (Exception e)
{
Log.LogError("FindNics failed", e);
}
}
void FindNetworkInterfaces()
{
log.Debug("Finding network interfaces");
try
{
var currentNics = GetLinkLocalAddresses().ToList();
var newNics = new List <IPAddress>();
var oldNics = new List <IPAddress>();
foreach (var nic in knownIPs?.Where(k => !currentNics.Any(n => k.Equals(n))))
{
oldNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Removed ip '{nic}'.");
}
}
foreach (var nic in currentNics.Where(nic => !knownIPs.Any(k => k.Equals(nic))))
{
newNics.Add(nic);
if (log.IsDebugEnabled)
{
log.Debug($"Found ip '{nic}'.");
}
}
knownIPs = currentNics;
// Only create client if something has changed.
if (newNics.Any() || oldNics.Any())
{
client?.Dispose();
client = new MulticastClient(UseIpv4, UseIpv6, knownIPs);
client.MessageReceived += OnDnsMessage;
}
// Tell others.
if (newNics.Any())
{
NetworkInterfaceDiscovered?.Invoke(this, new IPEventArgs
{
NetworkInterfaces = newNics
});
}
// Magic from @eshvatskyi
//
// I've seen situation when NetworkAddressChanged is not triggered
// (wifi off, but NIC is not disabled, wifi - on, NIC was not changed
// so no event). Rebinding fixes this.
//
// Do magic only on Windows.
#if NET461
if (Environment.OSVersion.Platform.ToString().StartsWith("Win"))
#else
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
#endif
{
NetworkChange.NetworkAddressChanged -= OnNetworkAddressChanged;
NetworkChange.NetworkAddressChanged += OnNetworkAddressChanged;
}
}
catch (Exception e)
{
log.Error("FindNics failed", e);
}
}
void FindNetworkInterfaces()
{
var nics = GetNetworkInterfaces()
.Where(nic => !knownNics.Any(k => k.Id == nic.Id))
.ToArray();
foreach (var nic in nics)
{
lock (socketLock)
{
if (socket == null)
{
return;
}
IPInterfaceProperties properties = nic.GetIPProperties();
if (ip6)
{
var ipProperties = properties.GetIPv6Properties();
var interfaceIndex = ipProperties.Index;
var mopt = new IPv6MulticastOption(MulticastAddressIp6, interfaceIndex);
socket.SetSocketOption(
SocketOptionLevel.IPv6,
SocketOptionName.AddMembership,
mopt);
if (ipProperties.Mtu > packetOverhead)
{
// Only change maxPacketSize if Mtu is available (and it that is not the case on MacOS)
maxPacketSize = Math.Min(maxPacketSize, ipProperties.Mtu - packetOverhead);
}
}
else
{
var ipProperties = properties.GetIPv4Properties();
var interfaceIndex = ipProperties.Index;
var mopt = new MulticastOption(MulticastAddressIp4, interfaceIndex);
socket.SetSocketOption(
SocketOptionLevel.IP,
SocketOptionName.AddMembership,
mopt);
if (ipProperties.Mtu > packetOverhead)
{
// Only change maxPacketSize if Mtu is available (and it that is not the case on MacOS)
maxPacketSize = Math.Min(maxPacketSize, ipProperties.Mtu - packetOverhead);
}
}
knownNics.Add(nic);
}
}
// Tell others.
if (nics.Length > 0)
{
lock (socketLock)
{
if (socket == null)
{
return;
}
NetworkInterfaceDiscovered?.Invoke(this, new NetworkInterfaceEventArgs
{
NetworkInterfaces = nics
});
}
}
}
