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

[Alex Balashov]

I think the real question is what the adoption status of this draft is, 
and whether it will break interop.

Daniel-Constantin Mierla wrote:

> 
> 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
> 


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Alex Balashov
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