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Summary:ASTERISK-00273: # from MGCP during Ringtone causes Asterisk to stop responding
Reporter:jazz (jazz)Labels:
Date Opened:2003-09-14 22:59:56Date Closed:2004-09-25 02:46:18
Priority:MajorRegression?No
Status:Closed/CompleteComponents:Core/General
Versions:Frequency of
Occurrence
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Issues:
Environment:Attachments:
Description:Sending # from MGCP device before a call is answered is received by Asterisk and causes the system to stop responding.

****** ADDITIONAL INFORMATION ******

I have a D-Link DG1102s running MGCP into asterisk and an extension *9 setup which dumps me into my inbound context to simulate calls coming in from my X100P. This usually works with no hassles at all. Except this time I pressed # too early, as in before it actually answered and the MGCP IAD was still providing ring tone, and Asterisk just stopped
responding to everything! I had to do a send a SIGKILL just to kill the running process.

Here's a quick log just to illustrate what I mean:

 == Spawn extension (default, 121, 1) exited non-zero on
'MGCP/aaln/1@DLINK01-1'
   -- Endpoint 'aaln/1@DLINK01-1' observed 'hd'
   -- MGCP mgcp_new(MGCP/aaln/1@DLINK01-1) created in state: Down
   -- Endpoint 'aaln/1@DLINK01-1' observed '*'
   -- Endpoint 'aaln/1@DLINK01-1' observed '9'
   -- Executing Goto("MGCP/aaln/1@DLINK01-1", "inbound|s|1") in new
stack
   -- Goto (inbound,s,1)
   -- Executing Dial("MGCP/aaln/1@DLINK01-1", "MGCP/aaln/1@DLINK01|30")
in new stack
   -- MGCP mgcp_request(aaln/1@DLINK01)
   -- MGCP cw: -1, dnd: 0, so: 1, sno: 0
   -- MGCP mgcp_new(MGCP/aaln/1@DLINK01-0) created in state: Down
   -- Called aaln/1@DLINK01
   -- MGCP/aaln/1@DLINK01-0 is ringing
   -- Endpoint 'aaln/1@DLINK01-1' observed '#'
   -- Endpoint 'aaln/1@DLINK01-1' observed 'hu'

And at this point everything stops responding.

Comments:By: Mark Spencer (markster) 2003-09-16 14:37:28

You'll need to find me on IRC so I can ssh in and look at this bug on your system.
By: Pavel Litvinenko (pavell) 2003-09-23 11:03:35

The problem rises with any key pressed when remote end is ringing !!!
here is short :) log:

root@phongo:/home/litw# asterisk -r
Asterisk CVS-09/08/03-15:30:26, Copyright (C) 1999-2001 Linux Support Services, Inc.
Written by Mark Spencer <markster@linux-support.net>
=========================================================================
Connected to Asterisk CVS-09/08/03-15:30:26 currently running on phongo (pid = 2040)
phongo*CLI> set verbose 100
   -- Endpoint 'aaln/4@sale-0' observed 'hd'
   -- MGCP mgcp_new(MGCP/aaln/4@sale-0) created in state: Down
   -- Endpoint 'aaln/4@sale-0' observed '1'
   -- Endpoint 'aaln/4@sale-0' observed '5'
   -- Endpoint 'aaln/4@sale-0' observed 'hf'
   -- Swapping 0 for 1 on aaln/4@sale
   -- MGCP Muting 0 on aaln/4@sale
   -- MGCP mgcp_new(MGCP/aaln/4@sale-1) created in state: Down
   -- Endpoint 'aaln/4@sale-1' observed '1'
   -- Endpoint 'aaln/4@sale-1' observed '5'
   -- Endpoint 'aaln/4@sale-1' observed '3'
   -- Executing Dial("MGCP/aaln/4@sale-1", "MGCP/aaln/3@sale") in new stack
   -- MGCP mgcp_request(aaln/3@sale)
   -- MGCP cw: -1, dnd: 0, so: 0, sno: 0
   -- MGCP mgcp_new(MGCP/aaln/3@sale-1) created in state: Down
   -- Called aaln/3@sale
   -- MGCP/aaln/3@sale-1 is ringing
   -- Endpoint 'aaln/4@sale-1' observed '3'
phongo*CLI>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ here mgcp stack is stoped !!!
phongo*CLI> mgcp debug
MGCP Debugging Enabled
phongo*CLI>
phongo*CLI> mgcp audit endpoint aaln/3@sale
Posting Request:
AUEP 2485 aaln/3@sale MGCP 1.0
F: A,R,D,S,X,N,I,T,O,ES,VS,E,MD,M
to 195.161.106.163:2427
phongo*CLI>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this packet was not sent to the endpoint
phongo*CLI> show channels
       Channel  (Context    Extension    Pri )   State Appl.         Data    
MGCP/aaln/3@sale-1  (noc                     1   ) Ringing AppDial       (Outgoing Line)
MGCP/aaln/4@sale-1  (noc        153          1   )    Ring Dial          MGCP/aaln/3@sale
2 active channel(s)
phongo*CLI> soft hangup MGCP/aaln/3@sale-1
phongo*CLI> soft hangup MGCP/aaln/4@sale-1
phongo*CLI> show channels
       Channel  (Context    Extension    Pri )   State Appl.         Data    
MGCP/aaln/3@sale-1  (noc                     1   ) Ringing AppDial       (Outgoing Line)
MGCP/aaln/4@sale-1  (noc        153          1   )    Ring Dial          MGCP/aaln/3@sale
2 active channel(s)
phongo*CLI>^C
^^^^^^^^^^^^^^^^^^^^^^^^^^ hangup does not help

root@phongo:/etc/asterisk# tcpdump -i eth0 udp port 2427
tcpdump: listening on eth0
17:20:29.078998 xxx.xxx.xxx.xxx.2427 > phongo.krypton.ru.2427: udp 55 [tos 0x3,CE]
17:20:37.631419 xxx.xxx.xxx.xxx.2427 > phongo.krypton.ru.2427: udp 129 [tos 0x3,CE]

7 packets received by filter
0 packets dropped by kernel
root@phongo:/etc/asterisk# netstat -an|grep 2427
udp    63980      0 195.161.106.3:2427      0.0.0.0:*
root@phongo:/etc/asterisk#
By: Pavel Litvinenko (pavell) 2003-09-24 01:59:03

I have made this changes, endpoint does not send me error messages now,  but the problem is not gone

Index: chan_mgcp.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_mgcp.c,v
retrieving revision 1.19
diff -u -r1.19 chan_mgcp.c
--- chan_mgcp.c 8 Sep 2003 16:48:06 -0000       1.19
+++ chan_mgcp.c 24 Sep 2003 06:55:22 -0000
@@ -1565,7 +1565,13 @@
            add_header(&resp, "R", "hu(N), hf(N), D/[0-9#*](N)");
            break;
    }
-    if (strlen(tone)) {
+    if ((strlen(tone) == 1) &&
+       (sub->cxmode == MGCP_CX_RECVONLY) &&
+       (((tone[0] >= '0') && (tone[0] <= '9')) || ((tone[0] >= 'A') && (tone[0]
<= 'D')) || (tone[0] == '*') || (tone[0] == '#'))) {
+
+       return 0;
+
+    } else if (strlen(tone)) {
        add_header(&resp, "S", tone);
    }
       return send_request(sub, &resp, oseq);
By: Mark Spencer (markster) 2003-09-24 14:42:41

Fixed in CVS