[Kamailio-Users] from replace

[Daniel-Constantin Mierla]

Hello,

On 04/21/2009 05:40 PM, Gentrice's kaiser wrote:
> Daniel,
>
> Thanks for your suggest,
> the code has run for years, it's time to update ... thank again.
>
> I try the code with latest 1.4x
>
> I used to test uac_replace_from in request route then failure_route,
> it makes two from hdr connect together. That's totally wrong.
>
> If I have no replace_from in route, only in failure_route,
> and this faiure route repeat 2+ time (for serial call) , the from get  
> "repeated"...
>   
can you put some xlog for each uac_replace_from() you have in the config
and then watch the debug? Maybe by missing some return/exit the function
is called twice.

Make sure you use it only on branch_route, to be safe.

Cheers,
Daniel


> best regards
> kk
>
>
>
>
>
> 在 2009/4/21 下午 11:29 時，Daniel-Constantin Mierla 寫到：
>
>   
>> On 04/21/2009 04:31 PM, 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
>>>       
>> can you paste here the sip trace? Do you call uac_replace_from() in  
>> main route as well?
>>
>> It is strange that you have two From headers.
>>
>> Also, note that with latest Kamailio (OpenSER) you can do directly  
>> script operations instead of using avpops module:
>>
>> $ru = $avp(forward);
>> $avp(forward) = null;
>> uac_replace_from("sip:1234@$fd");
>> append_branch();
>>
>> Also, you can write URI directly to the branch:
>>
>> $br = $avp(forward);
>>
>> instead of:
>>
>> $ru = $avp(forward);
>> append_branch();
>>
>>
>> See docs about PVs: http://www.kamailio.org/dokuwiki/doku.php/ 
>> pseudovariables:1.5.x#request_s_first_branch
>>
>> Cheers,
>> Daniel
>>
>> -- 
>> Daniel-Constantin Mierla
>> http://www.asipto.com/
>>     
>
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com/