static public List <IPAddress> NormalizeInterfaceChoice(InterfaceChoice choice, AddressFamily addressFamily)
{
List <IPAddress> list = new List <IPAddress>();
if (choice == InterfaceChoice.Default)
{
list.Add(IPAddress.Parse("0.0.0.0"));
}
else
{
List <IPInterfaceProperties> tmp = GetAllAddresses(addressFamily);
foreach (IPInterfaceProperties props in tmp)
{
foreach (IPAddressInformation info in props.AnycastAddresses)
{
if (info.Address.AddressFamily == addressFamily &&
info.Address.ToString() != IPAddress.Parse("127.0.0.1").ToString())
{
list.Add(info.Address);
}
}
}
}
return(list);
}
static public List <string> Find(Zeroconf zc = null, int timeout = 5,
InterfaceChoice interfaces = InterfaceChoice.All)
{
Zeroconf localZc = null;
if (zc != null)
{
localZc = zc;
}
else
{
localZc = new Zeroconf(interfaces: interfaces);
}
ZeroconfServiceTypes listener = new ZeroconfServiceTypes();
ServiceBrowser browser = new ServiceBrowser(
localZc, "_services._dns-sd._udp.local.",
listener: listener
);
// Wait for responses
System.Threading.Thread.Sleep(timeout * 1000);
// Close down anything we opened
if (zc == null)
{
localZc.Close();
}
else
{
browser.Cancel();
}
return(listener.foundServices);
}
/// <summary>
/// Creates an instance of the Zeroconf class, establishing
/// multicast communications, listening and reaping threads.
/// </summary>
/// <param name="interfaces">Interfaces.</param>
public Zeroconf(InterfaceChoice interfaces = InterfaceChoice.All)
{
this.globalDone = false;
/* LISTEN SOCKET START */
this.listenSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram,
ProtocolType.Udp);
this.listenSocket.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReuseAddress,
true);
this.listenSocket.Bind(new IPEndPoint(IPAddress.Any, Constants.MDNS_PORT));
MulticastOption mcastOption = new MulticastOption(
Constants.MDNS_ADDRESS, IPAddress.Any
);
this.listenSocket.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.AddMembership,
mcastOption);
/* LISTEN SOCKET END */
/* RESPONSE SOCKET START */
List <IPAddress> _interfaces = Utilities.NormalizeInterfaceChoice(
interfaces,
AddressFamily.InterNetwork);
this.respondSockets = new List <Socket>();
foreach (IPAddress localAddr in _interfaces)
{
Socket respondSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
respondSocket.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReuseAddress,
true);
respondSocket.Bind(new IPEndPoint(IPAddress.Any, Constants.MDNS_PORT));
respondSocket.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.AddMembership, new MulticastOption(Constants.MDNS_ADDRESS));
respondSocket.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.MulticastTimeToLive, 255);
this.respondSockets.Add(respondSocket);
}
/* RESPONSE SOCKET END */
this.listeners = new List <object>();
this.browsers = new Dictionary <object, ServiceBrowser>();
this.services = new Dictionary <string, ServiceInfo>();
this.serviceTypes = new Dictionary <string, int>();
this.Cache = new DNSCache();
this.condition = new object();
this.engine = new Engine(this);
this.listener = new Listener(this);
this.engine.AddReader(this.listener, this.listenSocket);
this.reaper = new Reaper(this);
// this.debug = false;
}
