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(a)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(a)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

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(a)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(a)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

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(a)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

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