Aggiunto esercizio su stab-skeleton. Creato esercizio quindi con dns resolver, client -> stub -> skeleton -> server

stub_skeleton/DNS_Server_Launch.java

@@ -0,0 +1,57 @@
+package stub_skeleton;
+
+import java.io.IOException;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.HashMap;
+import java.util.logging.Logger;
+
+/**
+ * Created with xgiovio.macbookair.
+ * User: xgiovio
+ * Date: 21/10/14
+ * Time: 12:31
+ */
+public class DNS_Server_Launch {
+
+    private static final int dns_server_port = 60000;
+    private static ServerSocket saved_socket = null;
+
+    private static final Logger log = Logger.getLogger(DNS_Server_Launch.class.getName());
+
+    public static void main (String[] arg){
+
+
+        try {
+            ServerSocket open = new ServerSocket(dns_server_port);
+            saved_socket = open;
+             log.info("Aperto socket di ascolto su porta " + dns_server_port);
+             final HashMap<String,DNS_Record> database = new HashMap<String, DNS_Record>();
+
+            for(;true;){
+                Socket accept = open.accept();
+                log.info("Accettata richiesta");
+                Thread request_management_thread = new Thread(new DNS_Server_Request_Management(accept,database));
+                log.info("Richiesta inoltrata a thread");
+                request_management_thread.start();
+                log.info("Waiting on port " + dns_server_port);
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        finally{
+            if (saved_socket!=null)
+                try {
+                    saved_socket.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+        }
+
+
+
+    }
+
+
+}