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-boun...@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://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com
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