System.Net.Sockets.Tests.SocketOptionNameTest.CreateBoundUdpSocket C# (CSharp) Метод

        private static Socket CreateBoundUdpSocket(out int localPort)
        {
            Socket receiveSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            // sending a message will bind the socket to an available port
            string sendMessage = "dummy message";
            int port = 54320;
            IPAddress multicastAddress = IPAddress.Parse("239.1.1.1");
            receiveSocket.SendTo(Encoding.UTF8.GetBytes(sendMessage), new IPEndPoint(multicastAddress, port));

            localPort = (receiveSocket.LocalEndPoint as IPEndPoint).Port;
            return receiveSocket;
        }