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POTesting of socket communication program
 

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    <p>Am starting with socket programming with a simple UDPClient program to send some data. The large code snippet is below:</p> <pre><code>using System; using System.Text; using System.Net; using System.Net.Sockets; using System.Threading; class ShowIP { public static void Main(string[] args) { string name = Dns.GetHostName(); //name = "GSL1460"; name = "GSL1296"; try { IPAddress[] addrs = Dns.GetHostEntry(name).AddressList; foreach (IPAddress addr in addrs) Console.WriteLine("{0}/{1}", name, addr); Console.WriteLine("Started listening"); Thread listenerThread = new Thread(new ThreadStart(StartListeningUDP)); listenerThread.Start(); Console.WriteLine("Started sending"); for (int counter = 0; counter &lt;= 3; counter++) { Thread.Sleep(1000); Console.WriteLine("Sending {0} time", counter.ToString()); StartSendingUDP(addrs[0]); } Console.ReadLine(); } catch (Exception e) { Console.WriteLine(e.Message); } } private static void StartListeningUDP() { UdpClient udpListener = null; IPEndPoint nwPoint = new IPEndPoint(IPAddress.Any, 12345); while (true) { try { udpListener = new UdpClient(12345); Console.WriteLine("Waiting to receive"); Byte[] receivedBytes = udpListener.Receive(ref nwPoint); string receivedData = Encoding.ASCII.GetString(receivedBytes); Console.WriteLine("Data received : " + receivedData); } catch (Exception e) { Console.WriteLine(e.Message); } finally { udpListener.Close(); } } } private static void StartSendingUDP(IPAddress clientAddress) { UdpClient udpSender = new UdpClient(); try { Byte[] sendBytes = Encoding.ASCII.GetBytes("Say HI to Papa..."); Console.WriteLine("Data Sent : Say HI to Papa..."); udpSender.Send(sendBytes, sendBytes.Length, new IPEndPoint(clientAddress, 12345)); } finally { udpSender.Close(); } } } </code></pre> <p>The sample works fine on local machine, but am not able to send data to another machine on the intranet. </p> <p>During testing </p> <ul> <li>Am uncommenting the appropriate code to send data to his machine</li> <li>Am running the Receiver bit on his machine</li> <li>Have checked that the required port is open on his machine</li> </ul> <p>Am I missing something? Please suggest.</p>
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