Cleans the code

Code has been reviewed and cleaned.

src/main/java/es/uvigo/esei/dai/sockets/example1/HelloWorldClient.java

@@ -28,7 +28,7 @@ import java.net.UnknownHostException;
 
 public class HelloWorldClient {
   public static void main(String[] args) {
-    try (Socket socket = new Socket("localhost", 12345)) {
+    try (Socket socket = new Socket("localhost", 50000)) {
       System.out.println("Local port: " + socket.getLocalPort());
       final InputStream input = socket.getInputStream();
 
@@ -41,9 +41,11 @@ public class HelloWorldClient {
       // El InputStream se cerrará cuando se cierre el Socket
     } catch (final UnknownHostException e) {
       System.out.println("Unknown host: localhost");
+      e.printStackTrace();
     } catch (final IOException e) {
       System.out.print("Connection error: ");
       System.out.println(e.getMessage());
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example1/HelloWorldServer.java

@@ -28,7 +28,7 @@ import java.net.Socket;
 
 public class HelloWorldServer {
   public static void main(String[] args) {
-    try (ServerSocket serverSocket = new ServerSocket(12345)) {
+    try (ServerSocket serverSocket = new ServerSocket(50000)) {
       while (true) {
         System.out.println("Antes de accept");
 
@@ -43,6 +43,7 @@ public class HelloWorldServer {
       }
     } catch (final IOException e) {
       System.err.println("Server socket could not be created");
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example2/HelloWorldReceiver.java

@@ -27,19 +27,21 @@ import java.net.DatagramSocket;
 
 public class HelloWorldReceiver {
   public static void main(String[] args) {
-    try (DatagramSocket socket = new DatagramSocket(1234)) {
+    try (DatagramSocket socket = new DatagramSocket(60000)) {
       final byte[] buffer = new byte[128];
 
       final DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
 
+      System.out.println("Antes de recibir");
       socket.receive(packet);
 
       final String message = new String(packet.getData(), 0, packet.getLength());
 
       System.out.println("Mensaje recibido: " + message);
-    } catch (final IOException ioe) {
+    } catch (final IOException e) {
       System.out.print("Connection error: ");
-      System.out.println(ioe.getMessage());
+      System.out.println(e.getMessage());
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example2/HelloWorldSender.java

@@ -32,15 +32,17 @@ public class HelloWorldSender {
       final String message = "Hello World";
 
       final DatagramPacket packet = new DatagramPacket(
-        message.getBytes(), message.length(), InetAddress.getLocalHost(), 1234
+        message.getBytes(), message.length(), InetAddress.getLocalHost(), 60000
       );
 
+      System.out.println("Antes de enviar");
       socket.send(packet);
 
       System.out.println("Mensaje enviado");
-    } catch (final IOException ioe) {
+    } catch (final IOException e) {
       System.out.print("Error de conexión: ");
-      System.out.println(ioe.getMessage());
+      System.out.println(e.getMessage());
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoClient.java

@@ -34,7 +34,7 @@ public class EchoClient {
     // final Console console = System.console();
     final BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
 
-    try (Socket socket = new Socket("localhost", 1234)) {
+    try (Socket socket = new Socket("localhost", 50000)) {
       final DataInputStream input = new DataInputStream(socket.getInputStream());
       final DataOutputStream output = new DataOutputStream(socket.getOutputStream());
 
@@ -49,6 +49,7 @@ public class EchoClient {
       }
     } catch (final UnknownHostException e) {
       System.out.println("Unknown host: localhost");
+      e.printStackTrace();
     } catch (final IOException e) {
       System.out.println("Connection error: " + e.getMessage());
       e.printStackTrace();

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoReceiver.java

@@ -29,7 +29,7 @@ public class EchoReceiver {
   private static final int PACKET_LENGTH = 1024;
 
   public static void main(String[] args) {
-    try (DatagramSocket receiverSocket = new DatagramSocket(1234)) {
+    try (DatagramSocket receiverSocket = new DatagramSocket(60000)) {
       while (true) {
         final DatagramPacket packet = new DatagramPacket(new byte[PACKET_LENGTH], PACKET_LENGTH);
 
@@ -44,7 +44,8 @@ public class EchoReceiver {
         receiverSocket.send(packet);
       }
     } catch (final IOException e) {
-      System.err.println("Server socket could not be created");
+      System.out.println("Server socket could not be created");
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoSender.java

@@ -35,13 +35,13 @@ public class EchoSender {
     // final Console console = System.console();
     final BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
 
-    try (DatagramSocket socket = new DatagramSocket(new InetSocketAddress(InetAddress.getLocalHost(), 4444))) {
+    try (DatagramSocket socket = new DatagramSocket(new InetSocketAddress(InetAddress.getLocalHost(), 55555))) {
       String line;
       while ((line = console.readLine()) != null) {
         System.out.println("INPUT: " + line);
 
         final byte[] lineData = line.getBytes();
-        final DatagramPacket packet = new DatagramPacket(lineData, lineData.length, InetAddress.getLocalHost(), 1234);
+        final DatagramPacket packet = new DatagramPacket(lineData, lineData.length, InetAddress.getLocalHost(), 60000);
 
         // El paquete se envía
         socket.send(packet);
@@ -53,8 +53,10 @@ public class EchoSender {
       }
     } catch (final UnknownHostException e) {
       System.out.println("Unknown host: localhost");
+      e.printStackTrace();
     } catch (final IOException e) {
       System.out.println("Connection error: " + e.getMessage());
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example3/EchoServer.java

@@ -29,7 +29,7 @@ import java.net.Socket;
 
 public class EchoServer {
   public static void main(String[] args) {
-    try (ServerSocket serverSocket = new ServerSocket(1234)) {
+    try (ServerSocket serverSocket = new ServerSocket(50000)) {
       while (true) {
         try (Socket clientSocket = serverSocket.accept()) {
           final DataInputStream input = new DataInputStream(clientSocket.getInputStream());
@@ -44,6 +44,7 @@ public class EchoServer {
       }
     } catch (final IOException e) {
       System.err.println("Server socket could not be created");
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example4/MessageReceiver.java

@@ -29,7 +29,7 @@ import java.net.DatagramSocket;
 
 public class MessageReceiver {
   public static void main(String[] args) {
-    try (DatagramSocket socket = new DatagramSocket(1234)) {
+    try (DatagramSocket socket = new DatagramSocket(60000)) {
       final byte[] buffer = new byte[1500];
 
       while (true) {
@@ -49,9 +49,10 @@ public class MessageReceiver {
           e.printStackTrace();
         }
       }
-    } catch (final IOException ioe) {
+    } catch (final IOException e) {
       System.out.println("Connection error: ");
-      System.out.println(ioe.getMessage());
+      System.out.println(e.getMessage());
+      e.printStackTrace();
     }
   }
 }

src/main/java/es/uvigo/esei/dai/sockets/example4/MessageSender.java

@@ -32,7 +32,7 @@ import java.util.Date;
 public class MessageSender {
   public static void main(String[] args) {
     try (DatagramSocket socket = new DatagramSocket()) {
-      final ByteArrayOutputStream output = new ByteArrayOutputStream(1500);
+      final ByteArrayOutputStream output = new ByteArrayOutputStream(60000);
       final ObjectOutputStream dataOutput = new ObjectOutputStream(output);
 
       final Message message = new Message("Time", "Current time: " + new Date());
@@ -45,10 +45,10 @@ public class MessageSender {
       );
 
       socket.send(packet);
-    } catch (final IOException ioe) {
-      ioe.printStackTrace();
+    } catch (final IOException e) {
       System.out.print("Connection error: ");
-      System.out.println(ioe.getMessage());
+      System.out.println(e.getMessage());
+      e.printStackTrace();
     }
   }
 }