[OpenSIPS-Users] replace_from restore redundant from

[Bogdan-Andrei Iancu]

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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