Hi Daniel,

I'm using this method because I'm having issue with append_branch where last gateway is listed first.

For example if gateways are ordered in LCR_rule_target as 1,2,3 , I'm having them in contact header as : 3,1,2,3

I'm using below code :

if (!load_gws(1, $rU, $fu)) {

sl_send_reply("502", "Unable To lOad GatEwAyS");

exit;}

while(next_gw()){

append_branch(); }

sl_send_reply("302","Moved Temporary");

exit;

}

Any hint regarding the above would be appreciated.

Regards,

Ali

From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla Sent: Thursday, June 04, 2015 4:41 PM To: Kamailio (SER) - Users Mailing List Subject: Re: [SR-Users] Kamailio second contact header

Hello,

the r-uri is added as a Contact address for 3xx replies -- I don't remember if this is some RFC requirement or just an implementation of the sl function for 3xx replies (well, I haven't implemented those function either).

The active branches of the request are added as contact header to the reply. So you can practically use append_branch() as many times as you need and then do sl_send_reply("3xx", ...). You don't need to append headers to replies explicitely.

Cheers, Daniel

On 04/06/15 13:59, Ali Taher wrote:

Hello,

I'm trying to build new contact header that will be sent from Kamailio as below :

load_gws(1, $rU, $fu);

append_to_reply("Contact:");

while (next_gw())

{

append_to_reply("$ru");

}

append_to_reply("\r\n");

sl_send_reply("300","Multiple Choices");

exit;

yet I'm getting two Contact headers as shown in below SIP message.

How can I remove second contact header (highlighted below in gray)

Via: SIP/2.0/UDP 192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport= 42528;received=192.168.26.3

To: "9612" sip:9612@192.168.110.181 sip:9612@192.168.110.181;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

From: "test" sip:test@192.168.110.181 sip:test@192.168.110.181;tag=8571af74

Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

CSeq: 2 INVITE

Contact: sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.2 6.8

Contact: sip:9612@192.168.26.8

Server: kamailio (4.1.8 (x86_64/linux))

Content-Length: 0

Thanks,

Ali

_______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org mailto:sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Hi Daniel,

If it is the case then the ordering shouldn't be 1,2,3,3 ? but I'm getting 3,1,2,3.

I tried to set $(branch(uri)[-1]) = $null; after the while block , but nothing changed :(

Thanks,

Ali

From: Daniel-Constantin Mierla [mailto:miconda@gmail.com] Sent: Thursday, June 04, 2015 5:28 PM To: Ali Taher; 'Kamailio (SER) - Users Mailing List' Subject: Re: [SR-Users] Kamailio second contact header

Hello,

next_gw() is also setting the r-uri, so for the last successful next_gw() you should not call anymore append_branch(). Try to remove the last branch after the while block:

$(branch(uri)[-1]) = $null;

Cheers, Daniel

On 04/06/15 16:01, Ali Taher wrote:

Hi Daniel,

I'm using this method because I'm having issue with append_branch where last gateway is listed first.

For example if gateways are ordered in LCR_rule_target as 1,2,3 , I'm having them in contact header as : 3,1,2,3

I'm using below code :

if (!load_gws(1, $rU, $fu)) {

sl_send_reply("502", "Unable To lOad GatEwAyS");

exit;}

while(next_gw()){

append_branch(); }

sl_send_reply("302","Moved Temporary");

exit;

}

Any hint regarding the above would be appreciated.

Regards,

Ali

From: sr-users [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla Sent: Thursday, June 04, 2015 4:41 PM To: Kamailio (SER) - Users Mailing List Subject: Re: [SR-Users] Kamailio second contact header

Hello,

the r-uri is added as a Contact address for 3xx replies -- I don't remember if this is some RFC requirement or just an implementation of the sl function for 3xx replies (well, I haven't implemented those function either).

The active branches of the request are added as contact header to the reply. So you can practically use append_branch() as many times as you need and then do sl_send_reply("3xx", ...). You don't need to append headers to replies explicitely.

Cheers, Daniel

On 04/06/15 13:59, Ali Taher wrote:

Hello,

I'm trying to build new contact header that will be sent from Kamailio as below :

load_gws(1, $rU, $fu);

append_to_reply("Contact:");

while (next_gw())

{

append_to_reply("$ru");

}

append_to_reply("\r\n");

sl_send_reply("300","Multiple Choices");

exit;

yet I'm getting two Contact headers as shown in below SIP message.

How can I remove second contact header (highlighted below in gray)

Via: SIP/2.0/UDP 192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport= 42528;received=192.168.26.3

To: "9612" sip:9612@192.168.110.181 sip:9612@192.168.110.181;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

From: "test" sip:test@192.168.110.181 sip:test@192.168.110.181;tag=8571af74

Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

CSeq: 2 INVITE

Contact: sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.2 6.8

Contact: sip:9612@192.168.26.8

Server: kamailio (4.1.8 (x86_64/linux))

Content-Length: 0

Thanks,

Ali

_______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org mailto:sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Hello,

the last address from next_gw() becaomes the last r-uri and that is added as first contact. You will have to shift the URIs. Maybe the simplest way would be to disable adding r-uri as contact in 3xx via a mod param in sl module.

Also, if you use 4.3, might worth looking at rtjson module, you can build a json holding the destination addresses in the order you want and the push them to r-uri and branches.

Cheers, Daniel

On 04/06/15 17:00, Ali Taher wrote:

Hi,

I tried to not calling append_branch() when last successful next_gw() using below code :

$var(z)=0;

$var(a)=0;

if (!load_gws(1, $rU, $fu))

                                                              {

              sl_send_reply("502", "Unable To lOad GatEwAyS");

              exit; }

while(next_gw()) $var(z) = $var(z) +1;

xlog("L_INFO", "number of gateways : $var(z)\n");

load_gws(1, $rU, $fu);

                                            while (next_gw()){

                            xlog("L_INFO", "gateway is : $ru\n"); 

                            $var(a)=$var(a)+1;

                            if($var(a)!=$var(z))append_branch();



                            }

In this case I’m getting in contact headers the following gateways : 3,1,2

Regards,

Ali

*From:*Ali Taher [mailto:ataher@vanrise.com] *Sent:* Thursday, June 04, 2015 5:44 PM *To:* miconda@gmail.com; 'Kamailio (SER) - Users Mailing List' *Cc:* 'Ali Taher~Vanrise Technical Support' *Subject:* RE: [SR-Users] Kamailio second contact header

Hi Daniel,

If it is the case then the ordering shouldn’t be 1,2,3,3 ? but I’m getting 3,1,2,3.

I tried to set $(branch(uri)[-1]) = $null; after the while block , but nothing changed L

Thanks,

Ali

*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com] *Sent:* Thursday, June 04, 2015 5:28 PM *To:* Ali Taher; 'Kamailio (SER) - Users Mailing List' *Subject:* Re: [SR-Users] Kamailio second contact header

Hello,

next_gw() is also setting the r-uri, so for the last successful next_gw() you should not call anymore append_branch(). Try to remove the last branch after the while block:

$(branch(uri)[-1]) = $null;

Cheers, Daniel

On 04/06/15 16:01, Ali Taher wrote:

Hi Daniel,



I’m using this method because I’m having issue with append_branch
where last gateway is listed first.

For example if gateways are ordered in LCR_rule_target as 1,2,3  ,
I’m having them in contact header as : 3,1,2,3



I’m using below code :



if (!load_gws(1, $rU, $fu)) {



                  sl_send_reply("502", "Unable To lOad GatEwAyS");



                  exit;}



                  while(next_gw()){

                  append_branch(); }

                  sl_send_reply("302","Moved Temporary");

                  exit;                                    

                } 



Any hint regarding the above would be appreciated.



Regards,

Ali



*From:*sr-users [mailto:sr-users-bounces@lists.sip-router.org] *On
Behalf Of *Daniel-Constantin Mierla
*Sent:* Thursday, June 04, 2015 4:41 PM
*To:* Kamailio (SER) - Users Mailing List
*Subject:* Re: [SR-Users] Kamailio second contact header



Hello,

the r-uri is added as a Contact address for 3xx replies -- I don't
remember if this is some RFC requirement or just an implementation
of the sl function for 3xx replies (well, I haven't implemented
those function either).

The active branches of the request are added as contact header to
the reply. So you can practically use append_branch() as many
times as you need and then do sl_send_reply("3xx", ...). You don't
need to append headers to replies explicitely.

Cheers,
Daniel

On 04/06/15 13:59, Ali Taher wrote:

    Hello,



    I’m trying to build new contact header that will be sent from
    Kamailio as below :





    load_gws(1, $rU, $fu);

    append_to_reply("Contact:");

                                                    while (next_gw())

                                    {


                                    append_to_reply("$ru");

                                    }

                                    append_to_reply("\r\n");

                                    sl_send_reply("300","Multiple
    Choices");

                    exit;  





    yet I’m getting two Contact headers as shown in below SIP message.

    How can I remove second contact header (highlighted below in gray)



    Via: SIP/2.0/UDP
    192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3

    To: “9612"<sip:9612@192.168.110.181>
    <sip:9612@192.168.110.181>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

    From: "test"<sip:test@192.168.110.181>
    <sip:test@192.168.110.181>;tag=8571af74

    Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

    CSeq: 2 INVITE

    Contact:
    sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.26.8

    Contact: sip:9612@192.168.26.8

    Server: kamailio (4.1.8 (x86_64/linux))

    Content-Length: 0





    Thanks,

    Ali




    _______________________________________________

    SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list

    sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org>

    http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users



-- 

Daniel-Constantin Mierla

http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

Book: SIP Routing With Kamailio - http://www.asipto.com

-- Daniel-Constantin Mierla http://twitter.com/#!/miconda http://twitter.com/#%21/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com

Hello,

there is no parameter to disable adding new r-uri as a contact, I suggested to be added.

Meanwhile I looked at the code and there could be an option to get it work.

Append a branch after each next_gw() and before sending reply, do "revert_uri();" (ie., instead of dropping last branch do revert_uri()).

Cheers, Daniel

On 05/06/15 09:27, Ali Taher wrote:

Hi Daniel,

I tried the following mod param : modparam("sl", "bind_tm", 0), which is the only boolean param in sl module , but unfortunately still the same

How could I shift the URIs ?

Thanks,

Ali

*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com] *Sent:* Friday, June 05, 2015 10:04 AM *To:* Ali Taher; 'Kamailio (SER) - Users Mailing List' *Subject:* Re: [SR-Users] Kamailio second contact header

Hello,

the last address from next_gw() becaomes the last r-uri and that is added as first contact. You will have to shift the URIs. Maybe the simplest way would be to disable adding r-uri as contact in 3xx via a mod param in sl module.

Also, if you use 4.3, might worth looking at rtjson module, you can build a json holding the destination addresses in the order you want and the push them to r-uri and branches.

Cheers, Daniel

On 04/06/15 17:00, Ali Taher wrote:

Hi,



I tried to not calling append_branch() when last successful
next_gw() using below code :



$var(z)=0;

$var(a)=0;

if (!load_gws(1, $rU, $fu))

                                                                  {

                  sl_send_reply("502", "Unable To lOad GatEwAyS");

                  exit; }

while(next_gw()) $var(z) = $var(z) +1;

xlog("L_INFO", "number of gateways : $var(z)\n");  

load_gws(1, $rU, $fu);



                                                while (next_gw()){

                                xlog("L_INFO", "gateway is :
$ru\n"); 

                                $var(a)=$var(a)+1;

                                if($var(a)!=$var(z))append_branch();



                                }



In this case I’m getting in contact headers the following gateways
: 3,1,2



Regards,

Ali

*From:*Ali Taher [mailto:ataher@vanrise.com]
*Sent:* Thursday, June 04, 2015 5:44 PM
*To:* miconda@gmail.com <mailto:miconda@gmail.com>; 'Kamailio
(SER) - Users Mailing List'
*Cc:* 'Ali Taher~Vanrise Technical Support'
*Subject:* RE: [SR-Users] Kamailio second contact header



Hi Daniel,



If it is the case then the ordering shouldn’t be 1,2,3,3  ?  but
I’m getting 3,1,2,3.

I tried to set $(branch(uri)[-1]) = $null; after the while block ,
but nothing changed L



Thanks,

Ali



*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com]
*Sent:* Thursday, June 04, 2015 5:28 PM
*To:* Ali Taher; 'Kamailio (SER) - Users Mailing List'
*Subject:* Re: [SR-Users] Kamailio second contact header



Hello,

next_gw() is also setting the r-uri, so for the last successful
next_gw() you should not call anymore append_branch(). Try to
remove the last branch after the while block:

$(branch(uri)[-1]) = $null;

Cheers,
Daniel

On 04/06/15 16:01, Ali Taher wrote:

    Hi Daniel,



    I’m using this method because I’m having issue with
    append_branch where last gateway is listed first.

    For example if gateways are ordered in LCR_rule_target as
    1,2,3  , I’m having them in contact header as : 3,1,2,3



    I’m using below code :



    if (!load_gws(1, $rU, $fu)) {



                      sl_send_reply("502", "Unable To lOad GatEwAyS");



                      exit;}



                      while(next_gw()){

                      append_branch(); }

                      sl_send_reply("302","Moved Temporary");

                      exit;                                    

                    } 



    Any hint regarding the above would be appreciated.



    Regards,

    Ali



    *From:*sr-users [mailto:sr-users-bounces@lists.sip-router.org]
    *On Behalf Of *Daniel-Constantin Mierla
    *Sent:* Thursday, June 04, 2015 4:41 PM
    *To:* Kamailio (SER) - Users Mailing List
    *Subject:* Re: [SR-Users] Kamailio second contact header



    Hello,

    the r-uri is added as a Contact address for 3xx replies -- I
    don't remember if this is some RFC requirement or just an
    implementation of the sl function for 3xx replies (well, I
    haven't implemented those function either).

    The active branches of the request are added as contact header
    to the reply. So you can practically use append_branch() as
    many times as you need and then do sl_send_reply("3xx", ...).
    You don't need to append headers to replies explicitely.

    Cheers,
    Daniel

    On 04/06/15 13:59, Ali Taher wrote:

        Hello,



        I’m trying to build new contact header that will be sent
        from Kamailio as below :





        load_gws(1, $rU, $fu);

        append_to_reply("Contact:");

                                                        while
        (next_gw())

                                        {


                                        append_to_reply("$ru");

                                        }

                                        append_to_reply("\r\n");


        sl_send_reply("300","Multiple Choices");

                        exit;  





        yet I’m getting two Contact headers as shown in below SIP
        message.

        How can I remove second contact header (highlighted below
        in gray)



        Via: SIP/2.0/UDP
        192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3

        To: “9612"<sip:9612@192.168.110.181>
        <sip:9612@192.168.110.181>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

        From: "test"<sip:test@192.168.110.181>
        <sip:test@192.168.110.181>;tag=8571af74

        Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

        CSeq: 2 INVITE

        Contact:
        sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.26.8

        Contact: sip:9612@192.168.26.8

        Server: kamailio (4.1.8 (x86_64/linux))

        Content-Length: 0





        Thanks,

        Ali





        _______________________________________________

        SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list

        sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org>

        http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users




    -- 

    Daniel-Constantin Mierla

    http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

    Book: SIP Routing With Kamailio - http://www.asipto.com



-- 

Daniel-Constantin Mierla

http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

Book: SIP Routing With Kamailio - http://www.asipto.com

-- Daniel-Constantin Mierla http://twitter.com/#!/miconda http://twitter.com/#%21/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com

Hello,

On 04/06/15 16:43, Ali Taher wrote:

Hi Daniel,

If it is the case then the ordering shouldn’t be 1,2,3,3 ? but I’m getting 3,1,2,3.

I tried to set $(branch(uri)[-1]) = $null; after the while block , but nothing changed L

Are you still getting all branches? Isn't the last one removed? Can you print branches before and after assiging $null? you can use:

$var(i)=0; while($var(i)<$branch(count)) { xlog("branch uri[$var(i)]: $(branch(uri)[$var(i)])\n"); $var(i) = $var(i) + 1; }

Cheers, Daniel

Thanks,

Ali

*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com] *Sent:* Thursday, June 04, 2015 5:28 PM *To:* Ali Taher; 'Kamailio (SER) - Users Mailing List' *Subject:* Re: [SR-Users] Kamailio second contact header

Hello,

next_gw() is also setting the r-uri, so for the last successful next_gw() you should not call anymore append_branch(). Try to remove the last branch after the while block:

$(branch(uri)[-1]) = $null;

Cheers, Daniel

On 04/06/15 16:01, Ali Taher wrote:

Hi Daniel,



I’m using this method because I’m having issue with append_branch
where last gateway is listed first.

For example if gateways are ordered in LCR_rule_target as 1,2,3  ,
I’m having them in contact header as : 3,1,2,3



I’m using below code :



if (!load_gws(1, $rU, $fu)) {



                  sl_send_reply("502", "Unable To lOad GatEwAyS");



                  exit;}



                  while(next_gw()){

                  append_branch(); }

                  sl_send_reply("302","Moved Temporary");

                  exit;                                    

                } 



Any hint regarding the above would be appreciated.



Regards,

Ali



*From:*sr-users [mailto:sr-users-bounces@lists.sip-router.org] *On
Behalf Of *Daniel-Constantin Mierla
*Sent:* Thursday, June 04, 2015 4:41 PM
*To:* Kamailio (SER) - Users Mailing List
*Subject:* Re: [SR-Users] Kamailio second contact header



Hello,

the r-uri is added as a Contact address for 3xx replies -- I don't
remember if this is some RFC requirement or just an implementation
of the sl function for 3xx replies (well, I haven't implemented
those function either).

The active branches of the request are added as contact header to
the reply. So you can practically use append_branch() as many
times as you need and then do sl_send_reply("3xx", ...). You don't
need to append headers to replies explicitely.

Cheers,
Daniel

On 04/06/15 13:59, Ali Taher wrote:

    Hello,



    I’m trying to build new contact header that will be sent from
    Kamailio as below :





    load_gws(1, $rU, $fu);

    append_to_reply("Contact:");

                                                    while (next_gw())

                                    {


                                    append_to_reply("$ru");

                                    }

                                    append_to_reply("\r\n");

                                    sl_send_reply("300","Multiple
    Choices");

                    exit;  





    yet I’m getting two Contact headers as shown in below SIP message.

    How can I remove second contact header (highlighted below in gray)



    Via: SIP/2.0/UDP
    192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3

    To: “9612"<sip:9612@192.168.110.181>
    <sip:9612@192.168.110.181>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

    From: "test"<sip:test@192.168.110.181>
    <sip:test@192.168.110.181>;tag=8571af74

    Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

    CSeq: 2 INVITE

    Contact:
    sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.26.8

    Contact: sip:9612@192.168.26.8

    Server: kamailio (4.1.8 (x86_64/linux))

    Content-Length: 0





    Thanks,

    Ali





    _______________________________________________

    SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list

    sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org>

    http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users




-- 

Daniel-Constantin Mierla

http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

Book: SIP Routing With Kamailio - http://www.asipto.com

-- Daniel-Constantin Mierla http://twitter.com/#!/miconda http://twitter.com/#%21/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com

Hello,

can you try with latest master branch? I pushed some code to clean up dropping last branch.

If all ok, I will backport.

Cheers, Daniel

On 05/06/15 09:26, Ali Taher wrote:

Hi Daniel,

Here is the log I got :

2015-06-05T10:04:35.864338+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: Before assigning <null>

2015-06-05T10:04:35.864382+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[0]: sip:9612@C001

2015-06-05T10:04:35.864433+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[1]: sip:9612@192.168.26.1

2015-06-05T10:04:35.864452+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[2]: sip:9612@192.168.26.6

2015-06-05T10:04:35.864469+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[3]: sip:9612@192.168.26.8

2015-06-05T10:04:35.864498+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: After assigning <null>

2015-06-05T10:04:35.864513+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[0]: sip:9612@C001

2015-06-05T10:04:35.864531+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[1]: sip:9612@192.168.26.1

2015-06-05T10:04:35.864547+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[2]: sip:9612@192.168.26.6

2015-06-05T10:04:35.864564+03:00 ubuntu /usr/local/sbin/kamailio[25115]: INFO: <script>: branch uri[3]: sip:9612@192.168.26.8

Noting that the order of gateways above is correct , but in contact field I’m getting : sip:9612@192.168.26.8 , sip:9612@C001 , sip:9612@192.168.26.1 , sip:9612@192.168.26.6 , sip:9612@192.168.26.8

Below is full code I’m using:

if (is_method("INVITE"))

{

if (!load_gws(1, $rU, $fu))

   {

       sl_send_reply("502", "Unable To lOad GatEwAyS");

       exit;

   }

while (next_gw())

{

            append_branch();

}

xlog("L_INFO", "Before assigning $null");

$var(i)=0;

while($var(i)<$branch(count))

{

xlog("L_INFO", "branch uri[$var(i)]: $(branch(uri)[$var(i)])\n");

$var(i) = $var(i) + 1;

}

$(branch(uri)[-1]) = $null;

xlog("L_INFO", "After assigning $null");

$var(i)=0;

while($var(i)<$branch(count))

{

xlog("L_INFO", "branch uri[$var(i)]: $(branch(uri)[$var(i)])\n");

$var(i) = $var(i) + 1;

}

sl_send_reply("300","Multiple Choices");

exit;

}

Regards,

Ali

*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com] *Sent:* Friday, June 05, 2015 9:56 AM *To:* Ali Taher; 'Kamailio (SER) - Users Mailing List' *Subject:* Re: [SR-Users] Kamailio second contact header

Hello,

On 04/06/15 16:43, Ali Taher wrote:

Hi Daniel,



If it is the case then the ordering shouldn’t be 1,2,3,3  ?  but
I’m getting 3,1,2,3.

I tried to set $(branch(uri)[-1]) = $null; after the while block ,
but nothing changed L

Are you still getting all branches? Isn't the last one removed? Can you print branches before and after assiging $null? you can use:

$var(i)=0; while($var(i)<$branch(count)) { xlog("branch uri[$var(i)]: $(branch(uri)[$var(i)])\n"); $var(i) = $var(i) + 1; }

Cheers, Daniel

Thanks,

Ali



*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com]
*Sent:* Thursday, June 04, 2015 5:28 PM
*To:* Ali Taher; 'Kamailio (SER) - Users Mailing List'
*Subject:* Re: [SR-Users] Kamailio second contact header



Hello,

next_gw() is also setting the r-uri, so for the last successful
next_gw() you should not call anymore append_branch(). Try to
remove the last branch after the while block:

$(branch(uri)[-1]) = $null;

Cheers,
Daniel

On 04/06/15 16:01, Ali Taher wrote:

    Hi Daniel,



    I’m using this method because I’m having issue with
    append_branch where last gateway is listed first.

    For example if gateways are ordered in LCR_rule_target as
    1,2,3  , I’m having them in contact header as : 3,1,2,3



    I’m using below code :



    if (!load_gws(1, $rU, $fu)) {



                      sl_send_reply("502", "Unable To lOad GatEwAyS");



                      exit;}



                      while(next_gw()){

                      append_branch(); }

                      sl_send_reply("302","Moved Temporary");

                      exit;                                    

                    } 



    Any hint regarding the above would be appreciated.



    Regards,

    Ali



    *From:*sr-users [mailto:sr-users-bounces@lists.sip-router.org]
    *On Behalf Of *Daniel-Constantin Mierla
    *Sent:* Thursday, June 04, 2015 4:41 PM
    *To:* Kamailio (SER) - Users Mailing List
    *Subject:* Re: [SR-Users] Kamailio second contact header



    Hello,

    the r-uri is added as a Contact address for 3xx replies -- I
    don't remember if this is some RFC requirement or just an
    implementation of the sl function for 3xx replies (well, I
    haven't implemented those function either).

    The active branches of the request are added as contact header
    to the reply. So you can practically use append_branch() as
    many times as you need and then do sl_send_reply("3xx", ...).
    You don't need to append headers to replies explicitely.

    Cheers,
    Daniel

    On 04/06/15 13:59, Ali Taher wrote:

        Hello,



        I’m trying to build new contact header that will be sent
        from Kamailio as below :





        load_gws(1, $rU, $fu);

        append_to_reply("Contact:");

                                                        while
        (next_gw())

                                        {


                                        append_to_reply("$ru");

                                        }

                                        append_to_reply("\r\n");


        sl_send_reply("300","Multiple Choices");

                        exit;  





        yet I’m getting two Contact headers as shown in below SIP
        message.

        How can I remove second contact header (highlighted below
        in gray)



        Via: SIP/2.0/UDP
        192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3

        To: “9612"<sip:9612@192.168.110.181>
        <sip:9612@192.168.110.181>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d

        From: "test"<sip:test@192.168.110.181>
        <sip:test@192.168.110.181>;tag=8571af74

        Call-ID: Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY

        CSeq: 2 INVITE

        Contact:
        sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,sip:9612@192.168.26.8

        Contact: sip:9612@192.168.26.8

        Server: kamailio (4.1.8 (x86_64/linux))

        Content-Length: 0





        Thanks,

        Ali






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        sr-users@lists.sip-router.org <mailto:sr-users@lists.sip-router.org>

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    -- 

    Daniel-Constantin Mierla

    http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

    Book: SIP Routing With Kamailio - http://www.asipto.com




-- 

Daniel-Constantin Mierla

http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda

Book: SIP Routing With Kamailio - http://www.asipto.com

-- Daniel-Constantin Mierla http://twitter.com/#!/miconda http://twitter.com/#%21/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com