From 1fffd8daf1df1f3c04cd585f67143b192fb8e434 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Date: Fri, 14 Mar 2014 14:16:24 +0100
Subject: [PATCH] Add todo entry about the handling of final responses

The SIP RFC specifies that after a final response everything should
be ignored. It is not clear if an ACK should be sent for a 503 message
or if the dialog has been terminated. It looks like for 4xx, 5xx and
6xx the dialogue is gone. No ack needed.
---
 TODO | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/TODO b/TODO
index 152d9f1..2a2d240 100644
--- a/TODO
+++ b/TODO
@@ -23,3 +23,7 @@ General:
 * 401 handling might not work for BYE,ACK. For ACK the ACK might not
   be re-generated and the digest might be wrong due the missing operation
 * Compare with MGCPCommands and share code... in SIPRequest
+
+
+* 3xx, 4xx, 5xx, 6xx are final. We should not allow any other messages.
+Sending multiple 503/500 messages.. they all will be acked..