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Code console du client aynchrone

    Question

  • using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Net;
    using System.Net.Sockets;
    using System.Threading;


    namespace Asynchronous_client
    {
        class Program
        {
            // State object for receiving data from remote device.
            // Etat de l'objet pour la réception des données du périphérique distant.
            public class StateObject
            {
                // Client socket.
                //Socket client 
                public Socket workSocket = null;
                // Size of receive buffer.
                //Taille du tampon de réception.
                public const int BufferSize = 256;
                // Receive buffer.
                //// Recevoir le tampon.
                public byte[] buffer = new byte[BufferSize];
                // Received data string.
                //Chaîne de données reçues.
                public StringBuilder sb = new StringBuilder();

        public class AsynchronousClient {
        // The port number for the remote device.
        //Le numéro de port du périphérique distant.
        private const int port = 11000;

        // ManualResetEvent instances signal completion.
        // ManuelResetEvent occurrences d'événement signal.
        private static ManualResetEvent connectDone =  new ManualResetEvent(false);
        private static ManualResetEvent sendDone =  new ManualResetEvent(false);
        private static ManualResetEvent receiveDone = new ManualResetEvent(false);

        // The response from the remote device.
        // La réponse du périphérique distant.
        private static String response = String.Empty;

        private static void StartClient() {
            // Connect to a remote device.
            // Se connecter à un périphérique distant.
            try {
                // Establish the remote endpoint for the socket.
                // Définit le point d'extrémité distant pour la socket.
                // The name of the 
                // Le nom du
                // remote device is "host.contoso.com".
                // périphérique distant est "host.contoso.com".
                IPHostEntry ipHostInfo = Dns.Resolve("host.contoso.com");
               // ServerIP = Convert.ToString(inetServer.AddressList[0]);
                IPAddress ipAddress = ipHostInfo.AddressList[0];
                IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);

                // Create a TCP/IP socket.
                // Créer un socket TCP / IP.
                Socket client = new Socket(AddressFamily.InterNetwork,
                    SocketType.Stream, ProtocolType.Tcp);

                // Connect to the remote endpoint.
                //// Créer un socket TCP / IP.
                client.BeginConnect( remoteEP, 
                    new AsyncCallback(ConnectCallback), client);
                connectDone.WaitOne();

                // Send test data to the remote device.
                Send(client,"This is a test<EOF>");
                sendDone.WaitOne();

                // Receive the response from the remote device.
                Receive(client);
                receiveDone.WaitOne();

                // Write the response to the console.
                Console.WriteLine("Response received : {0}", response);

                // Release the socket.
                client.Shutdown(SocketShutdown.Both);
                client.Close();

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

        private static void ConnectCallback(IAsyncResult ar) {
            try {
                // Retrieve the socket from the state object.
                Socket client = (Socket) ar.AsyncState;

                // Complete the connection.
                client.EndConnect(ar);

                Console.WriteLine("Socket connected to {0}",
                    client.RemoteEndPoint.ToString());

                // Signal that the connection has been made.
                connectDone.Set();
            } catch (Exception e) {
                Console.WriteLine(e.ToString());
            }
        }

        private static void Receive(Socket client) {
            try {
                // Create the state object.
                StateObject state = new StateObject();
                state.workSocket = client;

                // Begin receiving the data from the remote device.
                client.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0,
                    new AsyncCallback(ReceiveCallback), state);
            } catch (Exception e) {
                Console.WriteLine(e.ToString());
            }
        }

        private static void ReceiveCallback( IAsyncResult ar ) {
            try {
                // Retrieve the state object and the client socket 
                // from the asynchronous state object.
                StateObject state = (StateObject) ar.AsyncState;
                Socket client = state.workSocket;

                // Read data from the remote device.
                int bytesRead = client.EndReceive(ar);

                if (bytesRead > 0) {
                    // There might be more data, so store the data received so far.
                state.sb.Append(Encoding.ASCII.GetString(state.buffer,0,bytesRead));

                    // Get the rest of the data.
                    client.BeginReceive(state.buffer,0,StateObject.BufferSize,0,
                        new AsyncCallback(ReceiveCallback), state);
                } else {
                    // All the data has arrived; put it in response.
                    if (state.sb.Length > 1) {
                        response = state.sb.ToString();
                    }
                    // Signal that all bytes have been received.
                    receiveDone.Set();
                }
            } catch (Exception e) {
                Console.WriteLine(e.ToString());
            }
        }

        private static void Send(Socket client, String data) {
            // Convert the string data to byte data using ASCII encoding.
            byte[] byteData = Encoding.ASCII.GetBytes(data);

            // Begin sending the data to the remote device.
            client.BeginSend(byteData, 0, byteData.Length, 0,
                new AsyncCallback(SendCallback), client);
        }

        private static void SendCallback(IAsyncResult ar) {
            try {
                // Retrieve the socket from the state object.
                Socket client = (Socket) ar.AsyncState;

                // Complete sending the data to the remote device.
                int bytesSent = client.EndSend(ar);
                Console.WriteLine("Sent {0} bytes to server.", bytesSent);

                // Signal that all bytes have been sent.
                sendDone.Set();
            } catch (Exception e) {
                Console.WriteLine(e.ToString());
            }
        }
        public static int Main(String[] args) {
            StartClient();
            return 0;
        }
          }

      }
     }
    }

    Bonjour ou bonsoir à  tous! Après la compilation il y a cette erreur: Warning 1 'System.Net.Dns.Resolve(string)' is obsolete: 'Resolve is obsoleted for this type, please use GetHostEntry instead. http://go.microsoft.com/fwlink/?linkid=14202' C:\Users\celestin\documents\visual studio 2012\Projects\Asynchronous_client\Asynchronous_client\Program.cs 57 38 Asynchronous_client.  AVEZ-VOUS UNE SOLUTION?

    dimanche 18 décembre 2016 02:57

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