[Freeswitch-users] "expire" for outgoing registrations not handled correctly?
Roland Hänel
roland at haenel.me
Tue Jan 10 13:22:13 MSK 2012
Hello Anthony,
Thanks. I have tested the registration-thread-frequency, but it seems this
does not address the issue I'm having here.
But the good news is: I just found the bug with the help of Alexandr
Dubovikov...
In sofia_reg.c, sofia_reg_check_gateway(...) it reads:
if (gateway_ptr->freq >= 60) {
gateway_ptr->expires = now + (gateway_ptr->freq - 15);
} else {
if (gateway_ptr->freq < 30 && gateway_ptr->freq >= 5) {
gateway_ptr->expires = now +
(gateway_ptr->freq - 5);
} else {
gateway_ptr->expires = now +
(gateway_ptr->freq);
}
}
this results in a re-REGISTER 15 seconds ahead of expiration if the
register timer is more than 60 seconds. We are a 5 seconds ahead of
expiration if the register timer is between 5 and 29 seconds. And the
winner is... if the register timer is between 30 and 59 seconds, we have no
"ahead". Obviously a bug, since the code is difficult to read with all
those else conditions.
I created a patch, verified that is works and attached it to this mail. Let
me know if I need to do more (open an issue etc.) to make sure this patch
gets applied...
Thanks again,
Roland
2012/1/10 Anthony Minessale <anthony.minessale at gmail.com>
> It might be because we only check for expiration every 30 seconds.
>
> update to latest GIT and I added a profile
> param: registration-thread-frequency
>
> The default is 30 so you can try setting it to 10 or 5 or something.
>
>
>
>
>
> 2012/1/9 Roland Hänel <roland at haenel.me>
>
>> Hi,
>>
>> It seems that I'm running into a timing issue with outgoing (gateway)
>> registrations, which results in some milliseconds in that I can't send
>> calls over that gateway.
>>
>> I have configured a gateway like this:
>>
>> <gateway name="duro">
>> <param name="username" value="XXXXXXX"/>
>> <param name="from-domain" value="durosip.qsc.de"/>
>> <param name="password" value="XXXXXXXXXXX"/>
>> <param name="proxy" value="durosip.qsc.de"/>
>> <param name="expire-seconds" value="120"/>
>> <param name="register" value="true"/>^M
>> <param name="register-transport" value="udp"/>
>> <param name="retry-seconds" value="5"/>
>> <param name="caller-id-in-from" value="true"/>
>> </gateway>^M
>>
>> If I look at the "200 OK" messages for the SIP REGISTER packet, the
>> server sends me an "Expires: 30", so FreeSwitch should re-REGISTER every 30
>> seconds.
>>
>> However, that's what happening:
>>
>> 2012-01-09 16:37:00.804865 [NOTICE] sofia_reg.c:407 Registering duro
>> 2012-01-09 16:37:31.804880 [NOTICE] sofia_reg.c:407 Registering duro
>> 2012-01-09 16:38:03.804894 [NOTICE] sofia_reg.c:407 Registering duro
>> 2012-01-09 16:38:35.824877 [NOTICE] sofia_reg.c:407 Registering duro
>> *2012-01-09 16:39:06.825090 [NOTICE] sofia_reg.c:407 Registering duro*
>> 2012-01-09 16:39:39.824881 [NOTICE] sofia_reg.c:407 Registering duro
>>
>>
>> You can see that it's *approximately* 30 seconds betwee registrations,
>> but in fact every time it's just a little more than 30 secs. This alone
>> makes me feel a little bit strange, since my registration might have been
>> expired during this time window (and consequently, maybe I'm loosing
>> incoming calls because of that).
>>
>> Even for outgoing calls, this seems to be an issue, let's take a look at
>> the 16:39:06.825090 re-REGISTER.
>>
>> We can see that at 16:39:05 (no micro-seconds here) the gateway becomes
>> "UNREGED":
>>
>> Content-Length: 542
>> Content-Type: text/event-plain
>>
>> Event-Subclass: sofia::gateway_state
>> Event-Name: CUSTOM
>> Core-UUID: 243269fe-d280-4f83-aca1-abb88f2ad258
>> FreeSWITCH-Hostname: lap597
>> FreeSWITCH-Switchname: lap597
>> FreeSWITCH-IPv4: 192.168.232.164
>> FreeSWITCH-IPv6: ::1
>> *Event-Date-Local: 2012-01-09 16:39:05*
>> Event-Date-GMT: Mon, 09 Jan 2012 15:39:05 GMT
>> Event-Date-Timestamp: 1326123545824882
>> Event-Calling-File: sofia_reg.c
>> Event-Calling-Function: sofia_reg_fire_custom_gateway_state_event
>> Event-Calling-Line-Number: 151
>> Gateway: duro
>> State: UNREGED
>> Ping-Status: UP
>>
>>
>> But the new REGISTER is done a full second later (this is not just a
>> display issue, I saw those messages scrolling by and there was just a
>> second pause between them):
>>
>> Event-Subclass: sofia::gateway_state
>> Event-Name: CUSTOM
>> Core-UUID: 243269fe-d280-4f83-aca1-abb88f2ad258
>> FreeSWITCH-Hostname: lap597
>> FreeSWITCH-Switchname: lap597
>> FreeSWITCH-IPv4: 192.168.232.164
>> FreeSWITCH-IPv6: ::1
>> Event-Date-Local: 2012-01-09 16:39:06
>> *Event-Date-GMT: Mon, 09 Jan 2012 15:39:06 GMT*
>> Event-Date-Timestamp: 1326123546825090
>> Event-Calling-File: sofia_reg.c
>> Event-Calling-Function: sofia_reg_fire_custom_gateway_state_event
>> Event-Calling-Line-Number: 151
>> Gateway: duro
>> State: TRYING
>> Ping-Status: DOWN
>>
>>
>> Then, the gateway gets re-registered in a couple of milliseconds and
>> everything is fine again.
>>
>> *It seems that this behaviour effectively creates a timespan of 1-2
>> seconds, where the gateway is not available for outgoing (and maybe also
>> incoming) calls.*
>>
>> Does anyone of you know this issue? I wonder because this looks just to
>> easy to be wrong in this fashion?
>>
>> Greetings,
>> Roland
>>
>>
>>
>> _________________________________________________________________________
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>>
>>
>>
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>>
>
>
> --
> Anthony Minessale II
>
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>
>
>
>
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>
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--
Gruß,
Roland
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