[SR-Users] CANCEL before INVITE

[David]

Hello,

Still using Kamailio 1.5.4.

What behaviour should the tm module be doing? Is it doing the RFC 
behaviour where the CANCEL is only sent after a provisional reply is 
received or is it doing some other non standard action ?

David



On 2010-06-17 16:59, Andrei Pelinescu-Onciul wrote:
> On Jun 17, 2010 at 16:39, David<kamailio.org at spam.lublink.net>  wrote:
>    
>> Hello,
>>
>> I had a look at RFC 3261, section 9.1. The trouble is that Kamailio
>> is answering "100 Trying" to the caller, so the it is ok for the
>> caller to send back a CANCEL request. Trouble is Kamailio forwards
>> the request to the called user even though the called user never
>> sent a provisional response.
>>
>> Since the Kamailio server never received a provisional request, it
>> is therefore incorrect for it to forward the CANCEL request to the
>> called user. ( correct me if I am wrong ).
>>      
> Try 3.0 (kamailio or sip-router). You can control how unreplied branches
> are canceled, see
> http://sip-router.org/docbook/sip-router/branch/master/modules/tm/tm.html#cancel_b_method
>
>
> Andrei
>