bugfixes TCP (bis)

src/chat/ClientWindow.java

@@ -67,7 +67,7 @@ public class ClientWindow implements ActionListener {
             messageField.addActionListener(this);
             chatWindow.addWindowListener(new WindowAdapter() {
             	public void windowClosing(WindowEvent e) {
-            	    network.send(null);
+            	    network.disconnect();
             	}
             	});
 

src/chat/NetworkClient.java

@@ -103,6 +103,7 @@ class ReceiveThread extends Thread {
 	        }
 		
 			socket.close();
+			dest_sockets.remove(socket);
     	}
 		catch(Exception e)
     	{
@@ -154,6 +155,7 @@ class ConnectionListenerThread extends Thread {
 					InetAddress clientAddress= request.getAddress();
 					System.out.println("Received a request from " + username + "@" + clientAddress.getHostAddress());
 					
+					response = "";
 					for(User u:known_users)
 					{
 						response += u.getName() + " ";
@@ -165,7 +167,7 @@ class ConnectionListenerThread extends Thread {
 						response += s.getInetAddress().getHostAddress() + " ";
 					}
 					response = response.trim();
-					System.out.println("Response :" + response);
+					System.out.println("Response :" + response + "!");
 					responseBytes = response.getBytes();
 					responsePacket = new DatagramPacket(responseBytes, responseBytes.length, clientAddress, 1337);
 					responseSocket.send(responsePacket);
@@ -388,4 +390,17 @@ public class NetworkClient {
 			catch(IOException e){}
 		}
 	}
+	
+	void disconnect()
+	{
+		send(null);
+		for(Socket s:dest_sockets)
+		{
+			try
+			{
+				s.close();
+			}
+			catch(IOException e){}
+		}
+	}
 }