Re: PDU Enquire_link

Denis V. Gudtsov <[email protected]>
Newsgroups gmane.comp.mobile.kannel.devel,gmane.comp.mobile.kannel.user
Message-ID <[email protected]>
On Sun, 20 Aug 2006 16:29:34 +0200
  Stipe Tolj <[email protected]> wrote:
> Denis V. Gudtsov wrote:
> 
>> On Sat, 19 Aug 2006 21:58:28 +0200
>>  Stipe Tolj <[email protected]> wrote:
>> 
>>> Denis V. Gudtsov wrote:
>>>
>>>> Can kannel 1.4.0 sends PDU Enquire_link only when there are no 
>>>> activity in SMPP connection, not every 30 seconds, e.g. without 
>>>> analyze traffic?
>>>
>>>
>>> the enquire_link PDUs are send within an own thread, AFAIR, so there 
>>> is no "analyze" of traffic. If the 30 sec delay is to fast for you, 
>>> you can use a config directive to define the delay time, see user's 
>>> guide, section for SMPP specific parameters of group smsc.
>>>
>> 
>> the thing is that our operator requires to PDU Enquire_link when other 
>> PDUs has been sended/received in 60 sec period. So, I need to send 
>> Enquire_link only when no any traffic during 60 sec.
>> 
>> My be it possible to rewrite handler which send keep-alive packets?
> 
> Hi Denis,
> 
> ok, I still didn't get the point very well.
> 
> The operator requiures:
> 
> a) to send a enquire_link PDU after sending/receiving a SMS within 60 sec.
> b) to send a enquire_link PDU if NO SMS is flowing within 60 sec.
> 
> ?
the second is right

> 
> Is't it enough to modify the delay time via config directive to garantee 
>that every 50 sec. an enquire_link is send?

no, didn't. as i understand from sources, kannel can update timestamp during 
every operation with any PDU (send/recv). then if curr_time>last_timestamp we 
need to send enquire_link.
nowdays enquire_link will be sends every XXX seconds as defined in config file 
or by default = 30sec.

i'm planing to rewrite code for this feature. is it interesting for devel@ ?

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