public ServiceDiscoverySocket(NetworkInterface iface,
IPAddress localAddress,
IPAddress multicastAddress,
int port,
int ttl,
INetworkServiceRegisty services,
bool sendLegacyResponse)
{
_iface = iface;
_name = iface.Name;
_networkInterfaceId = iface.Id;
_services = services;
_localAddress = localAddress;
_localEndPoint = new IPEndPoint(_localAddress, port);
_multicastAddress = multicastAddress;
_multicastEndPoint = new IPEndPoint(multicastAddress, port);
_sendLegacyResponse = sendLegacyResponse;
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp)
{
MulticastLoopback = true
};
_socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, ttl);
_socket.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReuseAddress, optionValue: true);
_socket.Bind(new IPEndPoint(localAddress, port));
var addressFamily = _localAddress.AddressFamily;
if (addressFamily == AddressFamily.InterNetwork)
{
try
{
_socket.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.AddMembership,
new MulticastOption(_multicastAddress,
_localAddress));
Log.DebugFormat("Joined multicast group {0} for {1}@{2}",
_multicastAddress,
_localAddress,
iface.Name);
}
catch (SocketException e)
{
Log.DebugFormat("Unable to join multicast group {0} for {1}@{2}: {3}",
_multicastAddress,
_localAddress,
iface.Name,
e);
}
}
else
{
throw new ArgumentOutOfRangeException(string.Format("Service discovery is not implemented for '{0}'",
addressFamily));
}
BeginReceive();
}
public ServiceDiscoveryAnySocket(INetworkServiceRegisty services,
IPAddress multicastAddress,
int port,
int ttl,
bool sendLegacyResponse)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (multicastAddress == null)
{
throw new ArgumentNullException(nameof(multicastAddress));
}
if (port <= 0 || port >= ushort.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(port));
}
if (ttl <= 0 || ttl >= byte.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(ttl));
}
_services = services;
_multicastAddress = multicastAddress;
_port = port;
_ttl = ttl;
_sendLegacyResponse = sendLegacyResponse;
_sockets = new Dictionary <IPAddress, ServiceDiscoverySocket>();
_syncRoot = new object();
NetworkChange.NetworkAddressChanged += NetworkChangeOnNetworkAddressChanged;
BindToAllAddresses();
}
