[Kamailio-Devel] Implrementing draft-sparks-sip-invfix-03 (default behaviour)

[Daniel-Constantin Mierla]

On 03/17/2009 11:35 PM, Iñaki Baz Castillo wrote:
> El Martes, 17 de Marzo de 2009, Daniel-Constantin Mierla escribió:
>   
>> Hello,
>>
>> On 03/17/2009 11:26 PM, Iñaki Baz Castillo wrote:
>>     
>>> Hi, by default Kamailio routes stateless a response without transaction.
>>> This behaviour is undesirable according to draft
>>> draft-sparks-sip-invfix-03.
>>>
>>> Please check also this report in which the draft is implemented doing
>>> a "drop()" in onreply_route if "t_check_trans()" is false:
>>>  
>>> https://sourceforge.net/tracker/index.php?func=detail&aid=2690374&group_i
>>> d=139143&atid=743023
>>>
>>> I would like a config option to change the default behaviour: a response
>>> with no transaction is dropped instead of forwarded. Where is the code to
>>> check? in tm module? sl?
>>>       
>> in default onreply route you can use t_check_trans() and if returns
>> false then do drop(). Doesn't work for you?
>>     
>
> Yes :)
> That exactly what I tested in the above URL:
>   
> https://sourceforge.net/tracker/index.php?func=detail&aid=2690374&group_id=139143&atid=743023
>
> But it requires manual configuration. I think the behaviour defined in the 
> draft is good for security and it should be implemented by default in 
> Kamailio (without the need of coding it manually), and of course a config 
> option to enable it (required in order to work as stateless proxy).
>
> Don't you agree on it?
>   
then the place is tm module. You can add a new parameter and drop the 
reply in the function that is handling the replies: reply_received(...)

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
http://www.asipto.com