diff -r c9ff263c29ad -r e684f11070d5 src/jlibrtp/DebugAppIntf.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jlibrtp/DebugAppIntf.java	Sat Mar 14 22:15:41 2009 +0100
@@ -0,0 +1,83 @@
+/**
+ * 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);
+}