Client-Server problem: sending udp packets to server causes "an existing connection was focibly closed by the remote host"

From: Bigdave (spam_at_spamm.com)
Date: 02/06/05 

Date: Sun, 6 Feb 2005 03:46:33 -0000

hi

Ive recently started coding a small project in c# using microsofts 2005
beta, i am trying to setup a small application that will send a string to a
server via udp, then for that same app to listen for a response from the
server and write the response into a message box, but when testing this on
the loopback address (127.0.0.1) i recieve "an existing connection was
focibly closed by the remote host", i have wrote the following code:

private void test_butt_Click(object sender, EventArgs e)
        {
            string ip = ip_txt.Text;
            try
            {
                UdpClient udp = new UdpClient();
                udp.Connect(ip, 29119);
                Byte[] sendBytes = Encoding.ASCII.GetBytes("Is anybody
there?");
                udp.Send(sendBytes, sendBytes.Length);

                System.Net.IPEndPoint RemoteIpEndPoint = new
System.Net.IPEndPoint(System.Net.IPAddress.Any, 0);

                Byte[] receiveBytes = udp.Receive(ref RemoteIpEndPoint);
                string returnData = Encoding.ASCII.GetString(receiveBytes);

                MessageBox.Show(returnData.ToString());
                udp.Close();

            }
                catch (Exception problemo ) {
                MessageBox.Show(problemo.Message);
            }
}

any help would be much appreciated

Thanks

--Dave

 

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