[SR-Users] Changing $fU or $fn in branch_route

[Jurijs Ivolga]

Hi Daniel,

Now it is clear. :)

Jurijs


On Fri, Oct 18, 2019 at 12:08 AM Daniel-Constantin Mierla <miconda at gmail.com>
wrote:

> Hello,
>
> changing content in SIP headers is practically done as two operations:
>
>   - delete old value
>   - insert the new value where the old value started
>
> By doing two changes to the same content (without an intermediate msg
> apply changes), practically you insert two new values where the old value
> started. The result being that the two new values appear one after the
> other.
>
> Cheers,
> Daniel
> On 17.10.19 22:11, Jurijs Ivolga wrote:
>
> Hi Daniel,
>
> I got that changes are not applied immediately. When I check SIP packet
> itself what was sent out I see that from header has user part equal to
> "1234567+123456". I think this might be a bug...
>
> Thank you!
>
> On Thu, 17. Oct 2019 at 22:22, Daniel-Constantin Mierla <miconda at gmail.com>
> wrote:
>
>> Hello,
>>
>> assigning to $fn, $fu or $fU is offered as a convenience way to update
>> parts of From header, but the changes are not applied immediately, like the
>> other operations done over the SIP headers -- see more details in the FAQ:
>>
>>   -
>> https://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or
>>
>> In your case, try to do those changes only in branch_route.
>>
>> Cheers,
>> Daniel
>> On 17.10.19 20:59, Jurijs Ivolga wrote:
>>
>> Hi,
>>
>> Just to add one more point that $fU & $fn I'm checking not in script but
>> in SIP packet. So using sngrep i see in SIP packet from header where $fU
>> and $fn are "1234567+123456".
>>
>> Jurijs
>>
>>
>> On Thu, Oct 17, 2019 at 1:06 PM Jurijs Ivolga <jurijs.ivolga at gmail.com>
>> wrote:
>>
>>> Hi!
>>>
>>> I have small problem. When I assign $fU or $fn in request-route and then
>>> one more time I make new assignment in branch_route.  Instead of rewriting
>>> it is just concatenate needed value at the end. lets assume
>>> $avp(cli)=1234567 and $avp(cliplus)=+1234567. So if in request_route I
>>> do $fU=$avp(cli); and then in branch_route $fU=$avp(cliplus);. $fU becomes
>>> one string: "1234567+1234567". Is it a bug or I missing something?
>>>
>>> Here is config snippet:
>>>
>>> request_route {
>>> ...
>>> route(MY);
>>> ...
>>> }
>>>
>>> route[MY] {
>>>
>>> ...
>>>         $avp(cli) = "1234567"
>>>         $avp(cliplus) = "+"+$avp(cli);
>>>         $fU=$avp(cli); # here $fU=1234567
>>>         $fn=$avp(cli); # here $fn=1234567
>>>         route(LCR_ROUTE);
>>>         exit;
>>> }
>>>
>>> route[LCR_ROUTE]
>>> {
>>>         if(!is_method("INVITE"))
>>>                 return;
>>>         if (!load_gws("1",$rU,$avp(cli))) {
>>>                 send_reply("503", "Error loading gateways");
>>>                 exit;
>>>         }
>>>
>>>         $var(i)=0;
>>>         while($(avp(lcr_gw_uri)[$var(i)])!= $null){
>>>                 xlog("L_INFO", "loaded
>>> gw_uri_avp[$var(i)]=$(avp(lcr_gw_uri)[$var(i)]) \n");
>>>                 $var(i) = $var(i)+1;
>>>         }
>>>
>>>         if (!next_gw()) {
>>>                 send_reply("503", "No available gateways");
>>>                 exit;
>>>         }
>>>
>>>         xlog("L_INFO", "request-uri $ru \n");
>>>         xlog("L_INFO", "$avp(lcr_gw_uri), $avp(lcr_id)\n");
>>>
>>>         xlog("L_INFO", "flag $avp(lcr_flag) \n");
>>>
>>>         t_set_fr(0, 4000);
>>>         t_on_failure("RTF_LCR_ROUTE");
>>>         t_on_branch("BRANCH_CUST");
>>>         route(RELAY);
>>>         exit;
>>> }
>>>
>>> branch_route[BRANCH_CUST] {
>>>         if ( $avp(lcr_flag) == 4) {
>>>                 $fU=$avp(cliplus); #here $fU=1234567+1234567
>>>                 $fn=$avp(cliplus); #here $fn=1234567+1234567
>>>         }
>>> }
>>>
>>> Jurijs
>>>
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing Listsr-users at lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>> --
>> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
>> Kamailio Advanced Training, Oct 21-23, 2019, Berlin, Germany -- https://asipto.com/u/kat
>>
>> --
> Jurijs
>
> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training, Oct 21-23, 2019, Berlin, Germany -- https://asipto.com/u/kat
>
>
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