Implemented "status" cmd to check a nodes neighbors ad hoc. Printing a "new neighbor" message only if the received neighbor really is new.

ws2012/P2P/uebungen/4/src/Main.java

@@ -58,6 +58,9 @@ public class Main {
 					theNode.leave();
 					nodes.remove(theNode);
 					break;
+				case "status":
+					System.out.println(nodes.get(node));
+					break;
 				default:
 					System.out.println("Unknown command.");
 					break;

ws2012/P2P/uebungen/4/src/node/Node.java

@@ -49,13 +49,12 @@ public class Node {
 	/**
 	 * Create another peer, mutually link creator and spawn.
 	 * 
-	 * @return
+	 * @return the spawned Node
 	 * @throws IOException
+	 *             if no connection could be established to the new node
 	 */
 	public Node spawn() throws IOException {
-		LOGGER.info("Name: " + getName() + ", Spawning new node.");
-
-		// create a new node
+		// LOGGER.info("Name: " + getName() + ", Spawning new node.");
 		Node newNode = new Node();
 
 		buf.clear();
@@ -167,6 +166,14 @@ public class Node {
 		return this.name;
 	}
 
+	public String toString() {
+		StringBuilder result = new StringBuilder(256);
+		result.append("Node ");
+		result.append(getName()).append(", Neighbors: ");
+		result.append(neighbors);
+		return result.toString();
+	}
+
 	public class UDPListen implements Runnable {
 		private volatile boolean running = true;
 
@@ -221,12 +228,13 @@ public class Node {
 							// check, if we have the neighbor already.
 							if (!hasNeighbor(new_neighbor)) {
 								neighbors.add(new_neighbor);
+
+								LOGGER.info(name + " from "
+										+ receivedFrom.toString()
+										+ " received new neighbor:"
+										+ new_neighbor.toString());
 							}
 
-							LOGGER.info(name + " from "
-									+ receivedFrom.toString()
-									+ " received new neighbor:"
-									+ new_neighbor.toString());
 							break;
 
 						default: