[asterisk-users] IAX qualify timers

[Frederic Van Espen]

Hi,

I think I encountered a bug in the qualify timers for IAX on asterisk 
1.8 but I'd like to check if I'm not messing up in my config somewhere 
before reporting a bug.

In my IAX peer configuration I have this:
[remote-host]
type=friend
host=172.16.6.45
username=remote-host
secret=test
notransfer=yes
qualify=16000
qualifyfreqnotok=30000

disallow=all
allow=alaw
allow=ulaw
allow=ilbc

auth=md5
encryption=no

With this configuration, I expect that I can receive a response PONG 
message from 172.16.6.45 up to 16 seconds after the POKE is sent out 
before the peer is marked UNREACHABLE or LAGGED.

On the 172.16.6.45 machine I have configured an outgoing delay of 
6000ms, effectively slowing down all outgoing traffic on the interface 
by 6 seconds.

Here's what really happens:
- Asterisk is started
- outgoing POKE is sent
- even before the PONG is received (after about 3 seconds), the peer is 
marked UNREACHABLE
- PONG message is received from 172.16.6.45 (6 seconds after the POKE). 
Nothing is displayed in the debug logs here and no ACK is sent out
- After the qualifyfreqnotok timer, another POKE is sent out
- 6 seconds later the PONG is received. This time, asterisk responds an 
ACK and marks the peer as REACHABLE
- and now history repeats itself indefinitely, switching between 
UNREACHABLE and REACHABLE after each POKE.

This results in these notices in the logs:
[Aug 21 10:54:58] NOTICE[13318] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 6001
[Aug 21 10:56:02] NOTICE[13323] chan_iax2.c: Peer 'remote-host' is now 
UNREACHABLE! Time: 6001
[Aug 21 10:56:38] NOTICE[13319] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 6001
[Aug 21 10:57:42] NOTICE[13324] chan_iax2.c: Peer 'remote-host' is now 
UNREACHABLE! Time: 6001
[Aug 21 10:58:18] NOTICE[13318] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 5999
[Aug 21 10:59:22] NOTICE[13325] chan_iax2.c: Peer 'remote-host' is now 
UNREACHABLE! Time: 5999
[Aug 21 10:59:58] NOTICE[13319] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 6001
[Aug 21 11:01:02] NOTICE[13324] chan_iax2.c: Peer 'remote-host' is now 
UNREACHABLE! Time: 6001
[Aug 21 11:01:38] NOTICE[13320] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 6001
[Aug 21 11:02:42] NOTICE[13325] chan_iax2.c: Peer 'remote-host' is now 
UNREACHABLE! Time: 6001
[Aug 21 11:03:18] NOTICE[13319] chan_iax2.c: Peer 'remote-host' is now 
REACHABLE! Time: 6001


I'm running asterisk 1.8.13.0, but I also tested on 1.8.23.0 with the 
same result.

Cheers,

Frederic