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Hello,<br>
<br>
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).<br>
<br>
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.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 04/06/15 13:59, Ali Taher wrote:<br>
</div>
<blockquote cite="mid:05b701d09ebd$e7e77e60$b7b67b20$@vanrise.com"
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<div class="WordSection1">
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying to build new contact header that
will be sent from Kamailio as below :<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">load_gws(1,
$rU, $fu);<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">append_to_reply("Contact:");<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
while (next_gw())<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
{<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
append_to_reply("$ru");<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
}<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
append_to_reply("\r\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">
sl_send_reply("300","Multiple Choices");<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="background:silver;mso-highlight:silver">
exit;</span> <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">yet I’m getting two Contact headers as
shown in below SIP message.<o:p></o:p></p>
<p class="MsoNormal">How can I remove second contact header
(highlighted below in gray)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Via: SIP/2.0/UDP
192.168.26.3:42528;branch=z9hG4bK-d8754z-4c2cc56c3145b446-1---d8754z-;rport=42528;received=192.168.26.3<o:p></o:p></p>
<p class="MsoNormal">To:
“9612"<a class="moz-txt-link-rfc2396E" href="sip:9612@192.168.110.181"><sip:9612@192.168.110.181></a>;tag=b27e1a1d33761e85846fc98f5f3a7e58.1a8d<o:p></o:p></p>
<p class="MsoNormal">From:
"test"<a class="moz-txt-link-rfc2396E" href="sip:test@192.168.110.181"><sip:test@192.168.110.181></a>;tag=8571af74<o:p></o:p></p>
<p class="MsoNormal">Call-ID:
Y2MzOTNiOGRhMTc2NDkwZjIxNzZhYTAzZmM0OGE3NDY<o:p></o:p></p>
<p class="MsoNormal">CSeq: 2 INVITE<o:p></o:p></p>
<p class="MsoNormal"><span
style="background:yellow;mso-highlight:yellow">Contact: <a
moz-do-not-send="true"
href="sip:9612@C001,sip:9612@192.168.26.1,sip:9612@192.168.26.6,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</a></span><o:p></o:p></p>
<p class="MsoNormal"><span
style="background:silver;mso-highlight:silver">Contact: <a
moz-do-not-send="true" href="sip:9612@192.168.26.8">sip:9612@192.168.26.8</a></span><o:p></o:p></p>
<p class="MsoNormal">Server: kamailio (4.1.8 (x86_64/linux))<o:p></o:p></p>
<p class="MsoNormal">Content-Length: 0<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Ali<o:p></o:p></p>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Book: SIP Routing With Kamailio - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a></pre>
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