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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"> I am using Kamailio behind NAT, unable to figure how to make it put “public ip” in Record-route header, I am manually inserting the hard-coded header myself as below.<o:p></o:p></p>
<p class="MsoNormal"> However now I am having trouble choosing the right port number in all scenarios.
<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><i> $var(dstPort) = 5061;<br>
if (dst_port==5060)<br>
{<br>
$var(dstPort) = 5060;<br>
}<br>
insert_hf("Record-Route: <sip:MY_PUBLICIP_ADDR:$var(dstPort);transport=tls;lr;nat=yes>\r\n", "Record-Route"); <o:p></o:p></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> In one scenario I see the conflicting port numbers in “via” header vs “Record route”.
<o:p></o:p></p>
<p class="MsoNormal"> The ACK is being set to port 5060 based on Record route header and is not being received by the callee.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><i>2017-01-23 14:52:49.970233 [blink.exe 2780]: SENDING: Packet 11, +0:00:36.411867<o:p></o:p></i></p>
<p class="MsoNormal"><i>10.0.27.108:58217 -(SIP over TLS)-> 172.31.211.31:5061<o:p></o:p></i></p>
<p class="MsoNormal"><i>SIP/2.0 180 Ringing<o:p></o:p></i></p>
<p class="MsoNormal"><i>Via: <span style="background:yellow;mso-highlight:yellow">
SIP/2.0/TLS 63.149.103.72:5061</span>;received=172.31.211.31;branch=z9hG4bK4799.7067bd2a48063748a4c353fa408eaefa.0<o:p></o:p></i></p>
<p class="MsoNormal"><i>Via: SIP/2.0/UDP 10.0.16.52;rport=5060;branch=z9hG4bK4799.935a27c6ef5ad112225964cbe7c1be44.0;i=2<o:p></o:p></i></p>
<p class="MsoNormal"><i>Via: SIP/2.0/TLS 10.11.200.12:51793;rport=51793;received=10.11.200.12;branch=z9hG4bKPj49f6aeca3f9b4155ab4c5304b544aa4d;alias<o:p></o:p></i></p>
<p class="MsoNormal"><i>Record-Route: <<span style="background:yellow;mso-highlight:yellow">sip:63.149.103.72:5060</span>;transport=tls;lr;nat=yes><o:p></o:p></i></p>
<p class="MsoNormal"><i>Record-Route: <sip:10.0.16.52:5061;transport=tls;lr;nat=yes><o:p></o:p></i></p>
<p class="MsoNormal"><i>Call-ID: 09ce10efa6a946bf9445ccc21857393e<o:p></o:p></i></p>
<p class="MsoNormal"><i>From: "cust1" <sip:cust1@devtranslation.sms-test.cyracom.com>;tag=95082caabecc42548c2fec5ccd29e5de<o:p></o:p></i></p>
<p class="MsoNormal"><i>To: <sip:spanish@translation.sms-test.cyracom.com>;tag=ec365cc8489b48a7bc5725d21b7d97a1<o:p></o:p></i></p>
<p class="MsoNormal"><i>CSeq: 17422 INVITE<o:p></o:p></i></p>
<p class="MsoNormal"><i>Server: Blink 3.0.0 (Windows)<o:p></o:p></i></p>
<p class="MsoNormal"><i>Contact: <sip:20745891@10.0.27.108:58216;transport=tls><o:p></o:p></i></p>
<p class="MsoNormal"><i>Allow: SUBSCRIBE, NOTIFY, PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, MESSAGE, REFER<o:p></o:p></i></p>
<p class="MsoNormal"><i>Content-Length: 0</i><br>
<br>
<o:p></o:p></p>
<p class="MsoNormal"><b>Questions: <o:p></o:p></b></p>
<p class="MsoNormal">1. How can I let in-built record-route function automatically choose “public ip” so I can get rid of my manual insertion altogether.<o:p></o:p></p>
<p class="MsoNormal">2. If no option, what is the right way to choose the port on which packet is being received, so it is same as what is on “VIA”.<o:p></o:p></p>
<p class="MsoNormal">3. Any other pointers to improve the logic here?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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