There was an error when we recursively called the synchronized KadBucket.insert method

- Fixed it by removing the recursion

src/kademlia/core/DefaultConfiguration.java

@@ -14,7 +14,7 @@ public class DefaultConfiguration implements KadConfiguration
     private final static long RESPONSE_TIMEOUT = 1500;
     private final static long OPERATION_TIMEOUT = 3000;
     private final static int CONCURRENCY = 10;
-    private final static int K = 3;
+    private final static int K = 10;
     private final static int RCSIZE = 3;
     private final static int STALE = 1;
     private final static String LOCAL_FOLDER = "kademlia";

src/kademlia/core/KadServer.java

@@ -196,6 +196,8 @@ public class KadServer
                     DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
                     socket.receive(packet);
                     
+                    //System.out.println("Received packet of size: " + packet.getLength());
+
                     /* We've received a packet, now handle it */
                     try (ByteArrayInputStream bin = new ByteArrayInputStream(packet.getData(), packet.getOffset(), packet.getLength());
                             DataInputStream din = new DataInputStream(bin);)

src/kademlia/operation/BucketRefreshOperation.java

@@ -57,7 +57,7 @@ public class BucketRefreshOperation implements Operation
                     }
                     catch (IOException e)
                     {
-                        e.printStackTrace();
+                        System.err.println("Bucket Refresh Operation Failed. Msg: " + e.getMessage());
                     }
                 }
             }.start();

src/kademlia/routing/KadBucketImpl.java

@@ -82,7 +82,7 @@ public class KadBucketImpl implements KadBucket
                 if (stalest != null)
                 {
                     this.contacts.remove(stalest);
-                    this.insert(c);
+                    this.contacts.put(c, c);
                 }
                 else
                 {