public void SearchNetwork()
{
string host = "224.0.23.12";
int timeToLive = 2;
short port = 3671;
int localPort = 3671;
int waitTimeInSeconds = 2;
IPAddress localIpAddress = IPAddress.Any;
IPEndPoint localEndPoint = new IPEndPoint(localIpAddress, localPort);
IPEndPoint multicastEndPoint = new IPEndPoint(IPAddress.Parse(host), port);
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
socket.Bind(localEndPoint);
socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership,
new MulticastOption(multicastEndPoint.Address, localIpAddress));
socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, timeToLive);
socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastLoopback, true);
SearchRequest request = new SearchRequest
{
DiscoveryEndpoint =
{
Address = GetLocalAddress(),
Port = (short)localEndPoint.Port,
ProtocolCode = KnxNetIPHPAI.ProtocolCodes.Ipv4Udp
}
};
byte[] buffer = request.GetBytes();
socket.SendTo(buffer, SocketFlags.None, multicastEndPoint);
buffer = new byte[10000];
Stopwatch watch = Stopwatch.StartNew();
while (watch.ElapsedMilliseconds < waitTimeInSeconds * 2000)
{
if (socket.Available <= 0)
{
continue;
}
int received = socket.Receive(buffer);
Console.WriteLine(received);
}
socket.Shutdown(SocketShutdown.Both);
Console.WriteLine("Done");
Console.ReadKey();
}