[SR-Users] Transaction good practices with t_relay t_newtran and t_release

[Dirk Teurlings - SIGNET B.V.]

Hi,

Thanks for all responses, I think we can do completely without the 
t_newtran too now. We got it originally from one of the older CNXCC 
routing examples. But it seems we can skip it entirely indeed.

TMX might also be good for us to use earlier transaction detection. I'll 
look into that as well.

Cheers,
Dirk


On 30-04-15 12:23, Daniel-Constantin Mierla wrote:
> Hello,
>
> there is a rather new lightweight mechanism to detect retransmissions
> without creating the transaction before relaying. It is already part of
> 4.2 and in the default configuration file -- see t_precheck_trans() from
> tmx module.
>
> Cheers,
> Daniel
>
>
> On 30/04/15 10:31, Mickael Marrache wrote:
>> Hi,
>>
>> I think one would like to create transaction ASAP to absorb retransmissions.
>> In some scenarios, processing a message can take time and retransmissions
>> are likely to happen, and you don't want the retransmissions to be processed
>> again (which can lead to errors in some scenarios). t_relay is generally
>> called at the end for relaying the message.
>>
>> Mickael
>>
>> -----Original Message-----
>> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of
>> Alex Balashov
>> Sent: Thursday, April 30, 2015 11:26 AM
>> To: Dirk Teurlings - SIGNET B.V.
>> Subject: Re: [SR-Users] Transaction good practices with t_relay t_newtran
>> and t_release
>>
>> Dirk,
>>
>> Why do you need to create new transactions yourself with t_newtran()?
>> Nonexotic applications of Kamailio usually don't require this. A transaction
>> is automatically created after t_relay() is called, and its lifecycle is
>> automatically managed - including destruction - based on the replies
>> received to the transaction-forming request, and based on RFC 3261 rules in
>> cases of timeouts.
>>
>> --
>> Alex Balashov | Principal | Evariste Systems LLC
>> 303 Perimeter Center North, Suite 300
>> Atlanta, GA 30346
>> United States
>>
>> Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>
>> Sent from my BlackBerry.
>>
>>
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