[OpenSIPS-Users] replace_from restore redundant from

[Bogdan-Andrei Iancu]

Hi Kaiser,

kaiser wrote:
> Bogdan,
>
> We have tested several ways:
>
> 1. use uac_replace_from in failure route only:
> this make redundant "from" header in reply 200 OK.
so you use it only in failure_route, this should be ok - what do you 
mean by redundant FROM hdr? can you post a trace ?
>
> 2. use uac_replace_from in request route and failure route:
> It makes outgoping INVITE with strange from header.
yes, this is is not correct. When doing uac_replace_from from request 
route, you do the change for all future branches.

Regards,
Bogdan
>
> br
> kk
>
>
> Bogdan-Andrei Iancu 提到:
>> Hi KK,
>>
>> do you do uac_replace_from() in other routes than failure_route() ? 
>> like in request route when you process the request for the first time?
>>
>> Regards,
>> Bogdan
>>
>> Gentrice's kaiser wrote:
>>> Dear Sir:
>>>
>>>
>>> I wrote a failure route for serial call mechanism, it help for no 
>>> answer call ...
>>> but all these serial calls need to have a new CallerID,
>>> so I use replace_from for this purpose.
>>>
>>>
>>>
>>> modparam("uac","from_restore_mode","auto")
>>>
>>>
>>> failure_route[3]
>>> {
>>> log(1,"******* I'm failure_route[3] *******\n");
>>>
>>> if (avp_pushto("$ru", "$avp(forward)"))
>>> {
>>> append_branch();
>>> avp_delete("$avp(forward)");
>>> uac_replace_from("sip:1234@$fd"); # change from header
>>> t_on_failure("3"); # try next , recursive
>>>
>>> t_relay();
>>>
>>> }
>>>
>>> }
>>>
>>>
>>>
>>> If only one forward number in AVP array , this code working fine,
>>> the issue will happen if multiple forward number trying, ( forward 
>>> 2nd,3rd ...number)
>>> the UAC module will restore from header in 200 OK of its following 
>>> message when a UA answered,
>>> we will have a duplicated "from header" in 200 OK (sending out 
>>> opensips).
>>> It means we will have 2 "from" headers (in 200 OK) to caller, if 2nd 
>>> forwarded callee answer.
>>>
>>> Caller ---> Invite ---> opensips ----> UA 0, no answer
>>> ----> UA 1, no answer
>>> ---->UA 2, answer
>>> <----200 OK
>>> <---200OK<---
>>>
>>> this 200ok will have 2 "from" header.
>>>
>>>
>>>
>>> Most of UA just ignore redundant from header, but some can not.
>>> I think it should be UAC modules issue, anyone can help me?
>>>
>>> best regards
>>> KK
>>>
>>>
>>>
>>>
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>>> Users at lists.opensips.org
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>>>
>>
>