diff -r 537ddd8aa407 -r 2036ebfaccda src/jlibrtp/DebugAppIntf.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jlibrtp/DebugAppIntf.java	Fri Nov 20 19:29:42 2009 +0100
@@ -0,0 +1,90 @@
+/**
+ * Java RTP Library (jlibrtp)
+ * Copyright (C) 2006 Arne Kepp
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+package jlibrtp;
+
+import java.net.InetSocketAddress;
+
+/**
+ * DebugAppIntf can be registered on RTPSession to provide simple debugging
+ * functionality. This is particularly useful to determine whether the client is
+ * receing any data at all.
+ * 
+ * @author Arne Kepp
+ * 
+ */
+
+public interface DebugAppIntf {
+	/**
+	 * This function wil notify you of any packets received, valid or not.
+	 * Useful for network debugging, and finding bugs in jlibrtp.
+	 * 
+	 * Type is an integer describing the type of event -2 - Invalid RTCP packet
+	 * received -1 - Invalid RTP packet received 0 - RTP packet received 1 -
+	 * RTCP packet received
+	 * 
+	 * Description is a string that should be meaningful to advanced users, such
+	 * as"RTP packet received from 127.0.0.1:12312, SSRC: 1380912 , payload type 1, packet size 16 octets"
+	 * or "Invalid RTP packet received from 127.0.0.1:12312"
+	 * 
+	 * This function is synchonous and should return quickly.
+	 * 
+	 * @param type
+	 *            , the type of event, see above.
+	 * @param socket
+	 *            , taken directly from the UDP packet
+	 * @param description
+	 *            , see above.
+	 */
+	public void packetReceived(int type, InetSocketAddress socket,
+			String description);
+
+	/**
+	 * This function will notify you of any packets sent from this instance of
+	 * RTPSession. Useful for network debugging, and finding bugs in jlibrtp.
+	 * 
+	 * Type is an integer describing the type of event 0 - RTP unicast packet
+	 * sent 1 - RTP multicast packet sent 2 - RTCP unicast packet sent 3 - RTCP
+	 * multicast packet sent
+	 * 
+	 * Description is a string that should be meaningful to advanced users, such
+	 * as
+	 * 
+	 * This function is synchonous and should return quickly.
+	 * 
+	 * @param type
+	 *            , the type of event, see above
+	 * @param socket
+	 *            , taken directly from the UDP packet
+	 * @param description
+	 *            , see above
+	 */
+	public void packetSent(int type, InetSocketAddress socket,
+			String description);
+
+	/**
+	 * Other important events that can occur in session -1 SSRC conflict 0
+	 * Session is terminating
+	 * 
+	 * @param type
+	 *            see above
+	 * @param description
+	 *            , see above
+	 */
+	public void importantEvent(int type, String description);
+}