diff --git a/.classpath b/.classpath
new file mode 100644
index 0000000..3f3893a
--- /dev/null
+++ b/.classpath
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="src" path=""/>
+	<classpathentry kind="output" path=""/>
+</classpath>
diff --git a/.project b/.project
new file mode 100644
index 0000000..17086d9
--- /dev/null
+++ b/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>nanofiles</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>
diff --git a/es/um/redes/nanoFiles/application/Directory.class b/es/um/redes/nanoFiles/application/Directory.class
new file mode 100644
index 0000000..dda6929
Binary files /dev/null and b/es/um/redes/nanoFiles/application/Directory.class differ
diff --git a/es/um/redes/nanoFiles/application/NanoFiles.class b/es/um/redes/nanoFiles/application/NanoFiles.class
new file mode 100644
index 0000000..06d51b7
Binary files /dev/null and b/es/um/redes/nanoFiles/application/NanoFiles.class differ
diff --git a/es/um/redes/nanoFiles/logic/NFController.class b/es/um/redes/nanoFiles/logic/NFController.class
new file mode 100644
index 0000000..3c43b0c
Binary files /dev/null and b/es/um/redes/nanoFiles/logic/NFController.class differ
diff --git a/es/um/redes/nanoFiles/logic/NFController.java b/es/um/redes/nanoFiles/logic/NFController.java
index 2fe9839..fe91dd9 100644
--- a/es/um/redes/nanoFiles/logic/NFController.java
+++ b/es/um/redes/nanoFiles/logic/NFController.java
@@ -160,6 +160,12 @@ public class NFController {
 			 * servidor escucha conexiones de otros peers así como la lista de ficheros
 			 * disponibles.
 			 */
+			
+			//Comprobamos si ya estamos sirviendo
+			if (controllerPeer.getServerPort() != 0) {
+		        System.err.println("* Ya existe un servidor de ficheros activo en el puerto " + controllerPeer.getServerPort());
+		        break;
+		    }
 			if (NanoFiles.testModeTCP) {
 				controllerPeer.testTCPServer();
 			} else {
diff --git a/es/um/redes/nanoFiles/logic/NFControllerLogicDir.class b/es/um/redes/nanoFiles/logic/NFControllerLogicDir.class
new file mode 100644
index 0000000..3f9c571
Binary files /dev/null and b/es/um/redes/nanoFiles/logic/NFControllerLogicDir.class differ
diff --git a/es/um/redes/nanoFiles/logic/NFControllerLogicP2P.class b/es/um/redes/nanoFiles/logic/NFControllerLogicP2P.class
new file mode 100644
index 0000000..15a2a53
Binary files /dev/null and b/es/um/redes/nanoFiles/logic/NFControllerLogicP2P.class differ
diff --git a/es/um/redes/nanoFiles/shell/NFCommands.class b/es/um/redes/nanoFiles/shell/NFCommands.class
new file mode 100644
index 0000000..d841ca9
Binary files /dev/null and b/es/um/redes/nanoFiles/shell/NFCommands.class differ
diff --git a/es/um/redes/nanoFiles/shell/NFShell.class b/es/um/redes/nanoFiles/shell/NFShell.class
new file mode 100644
index 0000000..bd685d2
Binary files /dev/null and b/es/um/redes/nanoFiles/shell/NFShell.class differ
diff --git a/es/um/redes/nanoFiles/tcp/client/NFConnector.class b/es/um/redes/nanoFiles/tcp/client/NFConnector.class
new file mode 100644
index 0000000..f8e7cb4
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/client/NFConnector.class differ
diff --git a/es/um/redes/nanoFiles/tcp/message/PeerMessage.class b/es/um/redes/nanoFiles/tcp/message/PeerMessage.class
new file mode 100644
index 0000000..27178c3
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/message/PeerMessage.class differ
diff --git a/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.class b/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.class
new file mode 100644
index 0000000..fb4f5a9
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.class differ
diff --git a/es/um/redes/nanoFiles/tcp/message/PeerMessageTest.class b/es/um/redes/nanoFiles/tcp/message/PeerMessageTest.class
new file mode 100644
index 0000000..cc5d5ac
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/message/PeerMessageTest.class differ
diff --git a/es/um/redes/nanoFiles/tcp/server/NFServer.class b/es/um/redes/nanoFiles/tcp/server/NFServer.class
new file mode 100644
index 0000000..29582f7
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/server/NFServer.class differ
diff --git a/es/um/redes/nanoFiles/tcp/server/NFServer.java b/es/um/redes/nanoFiles/tcp/server/NFServer.java
index 3dd8e20..42e9c72 100644
--- a/es/um/redes/nanoFiles/tcp/server/NFServer.java
+++ b/es/um/redes/nanoFiles/tcp/server/NFServer.java
@@ -278,8 +278,13 @@ public class NFServer implements Runnable {
 						msgOut.writeMessageToOutputStream(dos);
 					}
 					break;
+					
+				default:
+			        System.err.println("* [Servidor] Recibido opcode inesperado o inválido");
+			        break;
 				}
 				
+				
 			}
 		} catch (IOException e) {
 			e.printStackTrace();
diff --git a/es/um/redes/nanoFiles/tcp/server/NFServerState.class b/es/um/redes/nanoFiles/tcp/server/NFServerState.class
new file mode 100644
index 0000000..5b41e0c
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/server/NFServerState.class differ
diff --git a/es/um/redes/nanoFiles/tcp/server/NFServerThread.class b/es/um/redes/nanoFiles/tcp/server/NFServerThread.class
new file mode 100644
index 0000000..4b452cf
Binary files /dev/null and b/es/um/redes/nanoFiles/tcp/server/NFServerThread.class differ
diff --git a/es/um/redes/nanoFiles/udp/client/DirectoryConnector$DownloadedFile.class b/es/um/redes/nanoFiles/udp/client/DirectoryConnector$DownloadedFile.class
new file mode 100644
index 0000000..a154b0f
Binary files /dev/null and b/es/um/redes/nanoFiles/udp/client/DirectoryConnector$DownloadedFile.class differ
diff --git a/es/um/redes/nanoFiles/udp/client/DirectoryConnector.class b/es/um/redes/nanoFiles/udp/client/DirectoryConnector.class
new file mode 100644
index 0000000..d49307c
Binary files /dev/null and b/es/um/redes/nanoFiles/udp/client/DirectoryConnector.class differ
diff --git a/es/um/redes/nanoFiles/udp/client/DirectoryConnector.java b/es/um/redes/nanoFiles/udp/client/DirectoryConnector.java
index 0c5a92a..caca377 100644
--- a/es/um/redes/nanoFiles/udp/client/DirectoryConnector.java
+++ b/es/um/redes/nanoFiles/udp/client/DirectoryConnector.java
@@ -6,6 +6,7 @@ import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketTimeoutException;
+import java.net.SocketException;
 import java.util.Map;
 import java.util.Arrays;
 import java.util.LinkedHashMap;
@@ -115,21 +116,32 @@ public class DirectoryConnector {
 		DatagramPacket pktFromServer = new DatagramPacket(responseData, responseData.length);
 		int intentos = 0;
 		boolean recibido = false;
+		//Hay que configurar el timeout antes del bucle
+		try {
+			socket.setSoTimeout(TIMEOUT);
+		} catch (SocketException e) {
+			System.err.println("* Error configurando el timeout del socket UDP: " + e.getMessage());
+			return null;
+		}
 		while (intentos < MAX_NUMBER_OF_ATTEMPTS && !recibido) {
 			try {
 				socket.send(pktToServer);
-				socket.setSoTimeout(TIMEOUT);
 				socket.receive(pktFromServer);
 				recibido = true;
-			} catch (IOException e) {
+			//excepciones tratadas
+			} catch (SocketTimeoutException e){
 				intentos++;
-				if (intentos == MAX_NUMBER_OF_ATTEMPTS) {
-					System.err.println("DirectoryConnector.sendAndReceiveDatagrams: socket.receive()");
-					System.exit(-1);
-				}
+				System.err.println("* Timeout. Reintentando... (" + intentos + "/" + MAX_NUMBER_OF_ATTEMPTS + ")");
+			} catch (IOException e) {
+				System.err.println("* Error grave de I/O en UDP: " + e.getMessage());
+				System.exit(-1);
 			}
+			
+		}
+		if (intentos == MAX_NUMBER_OF_ATTEMPTS) {
+			System.err.println("* El directorio no responde tras " + MAX_NUMBER_OF_ATTEMPTS + " intentos.");
+			System.exit(-1);
 		}
-		
 		String servResp = new String(responseData, 0, pktFromServer.getLength());
 		response = servResp.getBytes();
 		System.out.println("Hemos recibido " + servResp);
diff --git a/es/um/redes/nanoFiles/udp/message/DirMessage.class b/es/um/redes/nanoFiles/udp/message/DirMessage.class
new file mode 100644
index 0000000..20abec9
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diff --git a/es/um/redes/nanoFiles/udp/message/DirMessageOps.class b/es/um/redes/nanoFiles/udp/message/DirMessageOps.class
new file mode 100644
index 0000000..70d8101
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diff --git a/es/um/redes/nanoFiles/udp/server/NFDirectoryServer.class b/es/um/redes/nanoFiles/udp/server/NFDirectoryServer.class
new file mode 100644
index 0000000..5efe375
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diff --git a/es/um/redes/nanoFiles/util/FileDatabase.class b/es/um/redes/nanoFiles/util/FileDatabase.class
new file mode 100644
index 0000000..72c54f0
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diff --git a/es/um/redes/nanoFiles/util/FileDigest.class b/es/um/redes/nanoFiles/util/FileDigest.class
new file mode 100644
index 0000000..a16d998
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diff --git a/es/um/redes/nanoFiles/util/FileInfo.class b/es/um/redes/nanoFiles/util/FileInfo.class
new file mode 100644
index 0000000..5754009
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diff --git a/es/um/redes/nanoFiles/util/FileNameUtil.class b/es/um/redes/nanoFiles/util/FileNameUtil.class
new file mode 100644
index 0000000..ed3dd36
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diff --git a/es/um/redes/nanoFiles/util/NickGenerator.class b/es/um/redes/nanoFiles/util/NickGenerator.class
new file mode 100644
index 0000000..cf0b8c4
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