CODEWITHSUNDEEP
c#.netsocketsudpudpclient
asimolmez
asimolmez

Reputation: 760

UDP socket listener not receiving data

My local ip is : 192.168.0.70, External ip is : 192.168.0.50 : 60000

I want receive data from external ip sending to local ip. I use Socket class because i can send data using remote IPEndPoint. But when Udp connection closed, local ip's port dynamically changing. How can i receive data?

private static void UdpConnect()
    {
        try
        {
            IPEndPoint remoteEP = new IPEndPoint(IPAddress.Parse("192.168.0.50"), 60000);

            Socket client = new Socket(AddressFamily.InterNetwork,
                SocketType.Dgram, ProtocolType.Udp);
            client.Connect(remoteEP);

            byte[] sendbuffer = { 1, 2, 3 };

            client.Send(sendbuffer);

            byte[] receivebuffer = new byte[512];

            client.Receive(receivebuffer);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }

Upvotes: 1

Views: 2115

Answers (1)

michaelb
michaelb

Reputation: 451

If you need to listen on a specific local port, use Socket.Bind and then Socket.ReceiveFrom. You don't need the Socket.Connect call since UDP is a connectionless protocol.

Upvotes: 1

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