static void Main(string[] args) { //create a new server var server = new UdpListener(); //start listening for messages and copy the messages back to the client Task.Factory.StartNew(async () => { while (true) { var received = await server.Receive(); server.Reply("ack " + received.Message, received.Sender); Console.WriteLine(received.Message); if (received.Message == "quit") break; } }); //create a new client var client = UdpUser.ConnectTo(Credentials.IPAddress, 32123); //wait for reply messages from server and send them to console Task.Factory.StartNew(async () => { while (true) { try { var received = await client.Receive(); Console.WriteLine(received.Message); if (received.Message.Contains("quit")) break; } catch (Exception ex) { Debug.Write(ex); } } }); //type ahead :-) string read; do { read = Console.ReadLine(); client.Send(read); } while (read != "quit"); }
public bool receive(UdpListener receiver, string fileName, Int32 fileSize) { //Byte[][] bytes = new Byte[fileSize/1024][]; SortedDictionary<Int32, Byte[]> bytes = new SortedDictionary<int, byte[]>(); bool endReception = false; Task.Factory.StartNew(async () => { var FIN = false; bool endFile = false; int counter = 0; while (!FIN) { var received = await receiver.Receive(); if (!bytes.Keys.Contains(received.packet.SequenceNumber)) { bytes[received.packet.SequenceNumber] = received.packet.DATA; counter++; } receiver.Reply(new Packet(0, received.packet.SequenceNumber, false, false, 0, new byte[0]).BuildPacket(), received.Sender); if(received.packet.FIN == true) { endFile = true; } if (bytes.Keys.Max() == counter && endFile) { FIN = true; byte[] file = Extensions.Combine(bytes.Values.ToArray()); System.IO.FileStream fileStream = new System.IO.FileStream(fileName, System.IO.FileMode.Create, System.IO.FileAccess.Write); fileStream.Write(file, 0, file.Length); fileStream.Close(); endReception = true; } } }); while (!endReception) { } return endReception; }
public void start() { /* Créer un socket et attendre la demande du client */ var server = new UdpListener(new IPEndPoint(IPAddress.Any, 32123)); //start listening for messages and copy the messages back to the client Task.Factory.StartNew(async () => { while (true) { Received received = await server.Receive(); if (received.packet.SOR == false) { UdpListener receiver = new UdpListener(new IPEndPoint(IPAddress.Any, Extensions.FreeUdpPort())); Byte[] portNumber = new Byte[4]; portNumber = BitConverter.GetBytes(((IPEndPoint)receiver.Client.Client.LocalEndPoint).Port); server.Reply(new Packet(0, received.packet.SequenceNumber, false, false, portNumber.Length, portNumber).BuildPacket(), received.Sender); Reception reception = new Reception(); reception.receive(receiver, System.Text.Encoding.UTF8.GetString(received.packet.DATA), received.packet.DataLength); } else { UdpUser sender = UdpUser.ConnectTo(received.Sender.Address.ToString(), received.Sender.Port); string fileName = System.Text.Encoding.UTF8.GetString(received.packet.DATA); await Task.Factory.StartNew(async () => { var ack = await sender.Receive(); if (ack.packet.AckNumber == 0) { sender = UdpUser.ConnectTo(Credentials.IPAddress, received.Sender.Port); CommunicationBase.Handshake = true; } }); /* Envoyer fichier */ byte[] bytes = System.IO.File.ReadAllBytes(fileName); byte[] fileNameString = Encoding.ASCII.GetBytes(Path.GetFileName(Path.Combine(fileName))); Packet packet = new Packet(0, 0, false, false, fileNameString.Length, fileNameString); sender.Send(packet.BuildPacket()); while (!CommunicationBase.Handshake) { } Submission submission = new Submission(); submission.submit(bytes, sender); /*UdpUser sender = UdpUser.ConnectTo(received.Sender.Address.ToString(), received.Sender.Port); byte[] bytes = System.IO.File.ReadAllBytes(System.Text.Encoding.UTF8.GetString(received.packet.DATA)); Submission submission = new Submission(); submission.submit(bytes, sender);*/ } //server.Reply(new Packet(0, received.packet.SequenceNumber, false, true, 0, new byte[0]).BuildPacket(), received.Sender); Console.WriteLine(received.Message); if (received.Message == "quit") break; } }); while (true) { } }
public void start() { int choiceTask; bool parsed; do { Console.WriteLine("\nQue souhaitez-vous faire?\n1) Envoyer un fichier\n2) Recevoir un fichier"); parsed = Int32.TryParse(Console.ReadLine(), out choiceTask); } while (!parsed || (choiceTask != 1 && choiceTask != 2)); string fileName; Console.WriteLine("\nEntrez le nom du fichier à traiter"); fileName = Console.ReadLine(); if (choiceTask == 1) { UdpUser socket = UdpUser.ConnectTo(Credentials.IPAddress, 32123); byte[] fileNameString = Encoding.ASCII.GetBytes(Path.GetFileName(Path.Combine(fileName))); //wait for reply messages from server and send them to console Task.Factory.StartNew(async () => { var received = await socket.Receive(); if (received.packet.AckNumber == 0) { socket = UdpUser.ConnectTo(Credentials.IPAddress, BitConverter.ToInt32(received.packet.DATA, 0)); CommunicationBase.Handshake = true; } }); /* On vérifie si le fichier existe. Si non, on redemande un nom de fichier existant à l'infini */ while (!File.Exists(Path.Combine(fileName))) { Console.WriteLine("\nFichier inexistant.\nEntrez le nom du fichier à traiter"); fileName = Console.ReadLine(); }; /* Envoyer fichier */ byte[] bytes = System.IO.File.ReadAllBytes(fileName); Submission submission = new Submission(); Packet packet = new Packet(0, 0, false, false, fileNameString.Length, fileNameString); socket.Send(packet.BuildPacket()); while (!CommunicationBase.Handshake) { } submission.submit(bytes, socket); } else { UdpListener receiver = new UdpListener(); bool endReception = false; byte[] fileNameString = Encoding.ASCII.GetBytes(fileName); Packet packet = new Packet(0, 0, false, true, fileNameString.Length, fileNameString); receiver.Send(packet.BuildPacket(), Credentials.IPAddress, 32123); Task.Factory.StartNew(async () => { Received received = await receiver.Receive(); if (received.packet.SOR == false) { receiver.Reply(new Packet(0, received.packet.SequenceNumber, false, false, 0, new byte[0]).BuildPacket(), received.Sender); Reception reception = new Reception(); endReception = reception.receive(receiver, System.Text.Encoding.UTF8.GetString(received.packet.DATA), received.packet.DataLength); } }); while (!endReception) { } } }