[OpenSER-Users] uac_replace_from and CANCEL

[Bai Shi]

Oops, forgot to attach again....

-----Original Message-----
From: Bogdan-Andrei Iancu [mailto:bogdan at voice-system.ro] 
Sent: 2008年3月25日 19:59
To: Bai Shi
Cc: Andreas Granig; Thomas Gelf; users at openser.org
Subject: Re: [OpenSER-Users] uac_replace_from and CANCEL

Hi Bai Shi,

Andreas also confirmed to work properly (when not used from branch 
route), so it is not a bug, but maybe some cfg/scenario error.

Try placing the call (only the test one) and grab the full debug log 
from openser - post it somewhere and I will take a look.

Regards,
Bogdan

Bai Shi wrote:
> Hi Andreas,
> I called without any branches.
>
> Bogdan, I'd appreciate if you can spare sometime to look at this again.
> Rgds,
> Bai Shi
>
> -----Original Message-----
> From: Andreas Granig [mailto:agranig at sipwise.com] 
> Sent: 2008年3月20日 1:34
> To: Bogdan-Andrei Iancu
> Cc: Bai Shi; Thomas Gelf; users at openser.org
> Subject: Re: [OpenSER-Users] uac_replace_from and CANCEL
>
> Or, to be more specific, I call it from a route which is called by a 
> branch_route. Not sure if that matters.
>
> Andreas
>
> Andreas Granig wrote:
>   
>> Bogdan,
>>
>> I just tested with 1.3.1, and there the From of the CANCEL is also NOT 
>> updated. A probably not so unimportant side-note is that I call 
>> uac_replace_from() from a branch_route.
>>
>> Andreas
>>
>> Bogdan-Andrei Iancu wrote:
>>     
>>> Hi Bai Shi,
>>>
>>> I just tested (to be sure no bugs are present) and in 1.3, the CANCELs 
>>> are automatically updated (the FROM header), as expected.
>>>
>>> Regards,
>>> Bogdan
>>>
>>> Bai Shi wrote:
>>>       
>>>> Hi, Thomas,
>>>> This will do in openser 1.2, however, in openser 1.3 it won't do any 
>>>> help. The CANCEL will be sent out regardless what you have done to 
>>>> the request, but follow the information in the original INVITE. I 
>>>> tested it and suffered a lot ;(
>>>> Rgds,
>>>> BS
>>>>
>>>> -----Original Message-----
>>>> From: users-bounces at lists.openser.org 
>>>> [mailto:users-bounces at lists.openser.org] On Behalf Of Andreas Granig
>>>> Sent: 2008年3月13日 2:54
>>>> To: Thomas Gelf
>>>> Cc: users at openser.org
>>>> Subject: Re: [OpenSER-Users] uac_replace_from and CANCEL
>>>>
>>>> Hi Thomas,
>>>>
>>>> Yes, I'm doing it that way now (without that "append_branch()" 
>>>> though), but if you have an uuid-based setup where you fetch the uuid 
>>>> from the subscriber table during authentication of the INVITE and 
>>>> then with that uuid fetch dynamic data from the usr_preferences table 
>>>> to be used for "uac_rewrite_host()", then you have to do some 
>>>> work-arounds and hacks to get that data for the CANCEL as well, which 
>>>> could be quite a pain.
>>>>
>>>> So yes, it would be really great if this could be done automatically 
>>>> *hint hint* :)
>>>>
>>>> Andreas
>>>>
>>>> Thomas Gelf wrote:
>>>>  
>>>>         
>>>>> Applying uac_replace_from() to the CANCEL request should do the job,
>>>>> it sadly doesn't happen automagically :'-(
>>>>>
>>>>> Try something like:
>>>>>
>>>>>      if(is_method("CANCEL") && uri =~ "^sip:...")
>>>>>      {
>>>>>          if(t_check_trans())
>>>>>          {
>>>>>              rewritehostport("...");
>>>>>              uac_replace_from("...");
>>>>>              append_branch();
>>>>>          }
>>>>>          if(!t_relay())
>>>>>          {
>>>>>              sl_reply_error();
>>>>>          }
>>>>>      }
>>>>>
>>>>> Cheers,
>>>>> Thomas Gelf
>>>>>
>>>>> Andreas Granig schrieb:
>>>>>   
>>>>>           
>>>>>> Hi,
>>>>>>
>>>>>> I hit another problem with a Cisco PGW in combination with CANCEL, 
>>>>>> and I'm not sure which fault it is. If I do uac_replace_from in the 
>>>>>> INVITE, the From-Header is altered somehow and sent to the PGW. So 
>>>>>> if A calls B where B is a PGW, the From from A to OpenSER is for 
>>>>>> example sip:a at somedomain and from OpenSER to B it's 
>>>>>> sip:other-a at somedomain.
>>>>>>
>>>>>> If the call is cancelled, the From-header isn't altered, so the 
>>>>>> From from A to OpenSER is sip:a at somedomain and from OpenSER to B 
>>>>>> it's sip:a at somedomain as well.
>>>>>>
>>>>>> Now the PGW seems to ignore this CANCEL, and I guess it's because 
>>>>>> of the different From-usernames, since it works if I don't do any 
>>>>>> uac_replace_from.
>>>>>>
>>>>>> RFC3261 says in §9.1:
>>>>>> The Request-URI, Call-ID, To, the numeric part of CSeq, and From 
>>>>>> header
>>>>>> fields in the CANCEL request MUST be identical to those in the
>>>>>> request being cancelled, including tags.
>>>>>>
>>>>>> So is it correct behavior of the PGW because the From header in the 
>>>>>> CANCEL is different from the From header in the INVITE? Should 
>>>>>> OpenSER alter the From in the CANCEL as well? Or should the PGW 
>>>>>> just check the  From tags, but not the From URI?
>>>>>>
>>>>>> Andreas
>>>>>>
>>>>>>       
>>>>>>             
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at lists.openser.org
>>>>> http://lists.openser.org/cgi-bin/mailman/listinfo/users
>>>>>     
>>>>>           
>>>> _______________________________________________
>>>> Users mailing list
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>>>>   
>>>>         

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