Hi.

i am sending data to UDP socket using this code

Socket udpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Parse(obj.destAddress), obj.destPort);

byte[] buf = new byte[obj.length];
Array.Copy((byte[])obj.data, buf, obj.length);
int n = udpClient.SendTo(buf, ipEndPoint);
udpClient.Close();

this code works fine when IP exists in current network, but it takes 3-5 seconds when I send data to unknown IP address. This causes main application to hang for 3-5 seconds.. What could be the reason behind this problem..