[Kamailio-Users] [LCR] About ping

[Iñaki Baz Castillo]

2009/3/23 Alexandr Dubovikov <shurik at start4.info>:
> On Mon, Mar 23, 2009 at 11:15:52AM +0100, Iñaki Baz Castillo wrote:
>> 2009/4/1 Alexandr Dubovikov <shurik at start4.info>:
>> > On Fri, Mar 20, 2009 at 10:21:20PM +0100, Andreas Heise wrote:
>> >> Hello Iñaki,
>
> Hi Inaki,
>
>> >
>> > Hi all,
>> >>
>> >> you should ask Alexandr he has introdused this feature with rev5452,
>> >> but I'm not sure if he is on the lists all the time, so I'll forward your
>> >> question
>> >> to him...
>> >
>> > sorry, I am currently offline and couldn't answer directly to the list.
>> >
>> > anyway. I agreed, 180 seconds it's too big ping interval, but it couldn't be
>> > also less 32 seconds.
>> >
>> >
>> > http://www.ietf.org/rfc/rfc3261.txt
>> >
>> > 17.2.2 Non-INVITE Server Transaction
>> >
>> >
>> > T1 = 500 ms.
>> >
>> >
>> > Timer J  64*T1 for UDP    Section 17.2.2       Wait time for
>> >         0s for TCP/SCTP                       non-INVITE request
>> >
>> > so, the timer for "completed" is 32 seconds and couldn't be less.
>> >
>> >
>> > of course, you can use less value, but on own risk :-)
>> > RFC 3261 are not recommendet it :)
>>
>> Thanks for pointing it out.
>> However, if a gw takes so long time (~32 seconds) to respond I prefer
>> to consider it as "offline" :)
>
> don't forget to disable ping for this gateway, because finaly you will have
> a DDOS effect of the "offline" gw. :-)

Well, If the host is already offline then it doesn't matter to kill it more XD

Thanks.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>