Re: [SR-Users] modify To header, prefix + ip, using dispacher module.

Hi Helena,

we do it the following way:

In the main route: t_on_branch("some_route");

branch_route[some_route] { uac_replace_to(....); }

This way, the uac_* functions get executed for each branch individually.

Kind regards, Carsten

2014-02-13 13:40 GMT+01:00 Helena Garcia-Nieto helena.gnieto@morodo.co.uk:

Hi,

Thanks for the tip, but I cannot manage it to work...

I hadn't uac module loaded, I loaded it and added

#MORODO TEST TO MODIFICATION loadmodule "uac.so" modparam("uac","restore_mode","none")

The uac function cannot be used on the failure rutine (it gives an error when restarting) so I chaged the order:

That is the default routing route[FROMPHONE] { [...] if(!ds_select_domain("1", "8")) { send_reply("404", "No destination"); exit; } t_on_failure("RTF_DISPATCH");

   #MORODO Add profix to ISKRATEL: 0199
            subst_uri('/^sip:(.*)/sip:0199\1/i'); # add prefix to URI
    uac_replace_to("","sip:0199$rU@$rd");

    route(RELAY);
    exit;

}

That is the failure function

failure_route[RTF_DISPATCH] { if (t_is_canceled()) { exit; }

    #marking the gw as failed and set state proving, to send options
    ds_mark_dst("p");

    # next DST - only for 500 or local timeout
    if (t_check_status("500") or (t_branch_timeout() and

!t_branch_replied())) { if(ds_next_domain()) { t_on_failure("RTF_DISPATCH"); #in case of fail again it would try the next option

            #MORODO, update IP on TO header

            subst_hf("To", "/(.*)@(.*)$/\1@$rd>/", "a");
                    route(RELAY);
                    exit;
            }
    }

}

But the result TO header is the same strange thing... mix of what it was on normal routine + what I wanted after the failure...

To: sip:0199XXXXX10@10.X.X.39sip:0199XXXXX10@10.X.X.38

It is like once the TO is modified, It does not modify it ok anymore...

Would you do it any other way that could be better?

Helena

-----Original Message----- From: sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Daniel Tryba Sent: miércoles, 12 de febrero de 2014 18:30 To: sr-users@lists.sip-router.org Subject: Re: [SR-Users] modify To header, prefix + ip, using dispacher module.

On Wednesday 12 February 2014 17:37:46 Helena Garcia-Nieto wrote:

...

I tried modifying again the TO header with: subst_hf("To", "/(.*)@(.*)$/\1@$rd>/", "a")

before the route(relay) on the failure routine, but it does not work properly, I am getting strange TO header like:

To: sip:0199XXXX@10.X.X.39 sip:XXXXXX@10.X.X.38

It looks like it is not parsing the to header it has before but adding a parsed version of the original header at the end of the other one.... I tried with subst as well but the result is more or less the same.

Probably there is a better way to set the prefix and the correct IP on

the to header... I'll appreciate any help with this issue.

How about just using uac_replace_to()?

http://kamailio.org/docs/modules/stable/modules/uac.html#uac.f.uac_replace_t o%28display,uri%29

4.4. uac_replace_to(display,uri)

Replace in TO header the display name and the URI part.

display and URI parameters can include pseudo-variables.

This function can be used from REQUEST_ROUTE and from BRANCH_ROUTE.

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