Beispiel #1
0
        public static void ReadCallback(IAsyncResult ar)
        {
            String content = String.Empty;

            // Retrieve the state object and the handler socket
            // from the asynchronous state object.
            StateObject state   = (StateObject)ar.AsyncState;
            Socket      handler = state.workSocket;

            // Read data from the client socket.
            int bytesRead = handler.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));

                // Check for end-of-file tag. If it is not there, read
                // more data.
                content = state.sb.ToString();
                if (content.IndexOf("<EOF>") > -1)
                {
                    // All the data has been read from the
                    // client. Display it on the console.
                    MessageCollection.GetInstance().AddListOfMessages(UtilityFunctions.MessageParser(content));
                    Logger.GetInstance().NotifyAll("Received a message");
                    // TODO: Add notif that promts new message
                    // Send response
                    while (!MessageCollection.GetInstance().IsLastMessage())
                    {
                        send(handler, MessageCollection.GetInstance().NextMessage().Call());
                    }
                }
                else
                {
                    // Not all data received. Get more.
                    handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
                                         new AsyncCallback(ReadCallback), state);
                }
            }
        }
Beispiel #2
0
        public void StartReceiving(ITextChanger ipText)
        {
            TcpListener server = null;

            try
            {
                // Set the TcpListener on port 13000.
                Int32     port         = 13000;
                IPAddress localAddress = IPAddress.Parse(ipv4Address);

                ipText.ChangeText(localAddress.MapToIPv4().ToString());

                server = new TcpListener(localAddress, port);

                // Start listening for client requests.
                server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];
                String data  = null;

                // Enter the listening loop.
                while (true)
                {
                    Logger.GetInstance().NotifyAll("Waiting for a connection... ");

                    // Perform a blocking call to accept requests.
                    // You could also use server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    Logger.GetInstance().NotifyAll("Connected!");

                    data = null;

                    // Get a stream object for reading and writing
                    NetworkStream stream = client.GetStream();

                    int i;

                    // Loop to receive all the data sent by the client.
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        // Translate data bytes to a ASCII string.
                        data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
                        Logger.GetInstance().NotifyAll("Received: " + data);
                        List <Message> newMessage = UtilityFunctions.MessageParser(data);
                        MessageCollection.GetInstance().AddListOfMessages(newMessage);
                        // Process the data sent by the client.
                        //data = data.ToUpper();

                        byte[] msg = System.Text.Encoding.ASCII.GetBytes(newMessage[0].Call());

                        // Send back a response.
                        stream.Write(msg, 0, msg.Length);
                        Logger.GetInstance().NotifyAll("Sent: " + data);
                    }

                    // Shutdown and end connection
                    //client.Close();
                }
            }
            catch (SocketException e)
            {
                Logger.GetInstance().NotifyAll("SocketException: " + e);
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
                Logger.GetInstance().NotifyAll("Server has stopped listening");
            }
        }