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    <p>Hello,</p>
    <p>if you control the freeswitches or change where they send
      traffic/receive traffic, then I recommend to use two listen
      parameters with advertise address, like:</p>
    <p>listen=<a class="moz-txt-link-freetext" href="udp:my.ip.ad.dr:5060">udp:my.ip.ad.dr:5060</a> advertise publicsrv:5060</p>
    <p>listen=<a class="moz-txt-link-freetext" href="udp:my.ip.ad.dr:5080">udp:my.ip.ad.dr:5080</a></p>
    <p>and carriers will be linked to my.ip.ad.dr:5060, while for
      freeswitch you use <a class="moz-txt-link-freetext" href="udp:my.ip.ad.dr:5080">udp:my.ip.ad.dr:5080</a>. You can use
      force_send_socket()/set_send_socket() or $fs to enforce a specific
      socket for sending traffic (e.g., towards freeswitch or carriers).</p>
    <p>There will be two record-route headers, but, besides enforcing
      sockets, everything else will be done automatically.<br>
    </p>
    <p>Cheers,<br>
      Daniel<br>
    </p>
    <div class="moz-cite-prefix">On 25.02.20 23:38, Daniel Greenwald
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAOsHgtvqqzWKMLsW8x-MCnwMcZ-cH1wazTeog3fM+akZe+AUeg@mail.gmail.com">
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        <div>carrier<---->kamailioes<----->freeswitches</div>
        <div>I am sending a record route header with a private SRV in
          the direction of freeswitch boxes and removing it when sending
          packets to carrier. I am using a different (pubic) SRV in
          contact header being sent to the carrier. </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Tue, Feb 25, 2020 at 4:59
          PM Henning Westerholt <<a href="mailto:hw@skalatan.de"
            target="_blank" moz-do-not-send="true">hw@skalatan.de</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div lang="DE">
            <div>
              <p class="MsoNormal"><span>Hi,</span></p>
              <p class="MsoNormal"><span> </span></p>
              <p class="MsoNormal"><span lang="EN-GB">why are you
                  calling
                </span><span lang="EN-GB">record_route_advertised_address(..)
                  on these replies or in-dialog requests? The
                  record_route functions are usually used on initial
                  dialog forming requests (INVITE, SUBSCRIBE etc..).</span></p>
              <p class="MsoNormal"><span lang="EN-GB"> </span></p>
              <p class="MsoNormal"><span lang="EN-GB">Cheers,</span></p>
              <p class="MsoNormal"><span lang="EN-GB"> </span></p>
              <p class="MsoNormal"><span lang="EN-GB">Henning</span><span
                  lang="EN-GB"></span></p>
              <p class="MsoNormal"><span lang="EN-GB"> </span></p>
              <p class="MsoNormal"><span lang="EN-GB">-- </span></p>
              <p class="MsoNormal"><span lang="EN-GB">Henning Westerholt
                  –
                </span><span><a href="https://skalatan.de/blog/"
                    target="_blank" moz-do-not-send="true"><span
                      style="color:rgb(5,99,193)" lang="EN-GB">https://skalatan.de/blog/</span></a></span><span
                  lang="EN-GB"></span></p>
              <p class="MsoNormal"><span lang="EN-GB">Kamailio services
                  –
                </span><span><a href="https://gilawa.com/"
                    target="_blank" moz-do-not-send="true"><span
                      style="color:rgb(5,99,193)" lang="EN-GB">https://gilawa.com</span></a></span><span>
                  <span lang="EN-GB"></span></span></p>
              <p class="MsoNormal"><span lang="EN-GB"> </span></p>
              <p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b>
                sr-users <<a
                  href="mailto:sr-users-bounces@lists.kamailio.org"
                  target="_blank" moz-do-not-send="true">sr-users-bounces@lists.kamailio.org</a>>
                <b>On Behalf Of </b>Daniel Greenwald<br>
                <b>Sent:</b> Tuesday, February 25, 2020 10:48 PM<br>
                <b>To:</b> Daniel-Constantin Mierla <<a
                  href="mailto:miconda@gmail.com" target="_blank"
                  moz-do-not-send="true">miconda@gmail.com</a>><br>
                <b>Cc:</b> Kamailio (SER) - Users Mailing List <<a
                  href="mailto:sr-users@lists.kamailio.org"
                  target="_blank" moz-do-not-send="true">sr-users@lists.kamailio.org</a>><br>
                <b>Subject:</b> Re: [SR-Users]
                record_route_advertised_address causes null send socket
                error</p>
              <p class="MsoNormal" style="margin-left:35.4pt"> </p>
              <div>
                <p class="MsoNormal" style="margin-left:35.4pt">They
                  occur when calling it on responses to the initial
                  INVITE, for example 183 and 200 OK. </p>
              </div>
              <p class="MsoNormal" style="margin-left:35.4pt"> </p>
              <div>
                <div>
                  <p class="MsoNormal" style="margin-left:35.4pt">On
                    Tue, Feb 25, 2020 at 4:33 PM Daniel-Constantin
                    Mierla <<a href="mailto:miconda@gmail.com"
                      target="_blank" moz-do-not-send="true">miconda@gmail.com</a>>
                    wrote:</p>
                </div>
                <blockquote
style="border-top:none;border-right:none;border-bottom:none;border-left:1pt
                  solid rgb(204,204,204);padding:0cm 0cm 0cm
                  6pt;margin-left:4.8pt;margin-right:0cm">
                  <div>
                    <p style="margin-left:35.4pt">Hello,</p>
                    <p style="margin-left:35.4pt">are those messages
                      printed during the processing of the initial
                      INVITE or when handling requests within dialog
                      (re-INVITE, BYE, ...).</p>
                    <p style="margin-left:35.4pt">Cheers,<br>
                      Daniel</p>
                    <div>
                      <p class="MsoNormal" style="margin-left:35.4pt">On
                        25.02.20 21:20, Daniel Greenwald wrote:</p>
                    </div>
                    <blockquote style="margin-top:5pt;margin-bottom:5pt">
                      <div>
                        <p class="MsoNormal" style="margin-left:35.4pt">I
                          am using record_route_advertised_address to
                          insert a record route header with an SRV
                          record. The header is added correctly and
                          everything appears to be working fine however
                          I get a CRITICAL log error when calling 
                        </p>
                        <div>
                          <p class="MsoNormal"
                            style="margin-left:35.4pt"> </p>
                        </div>
                        <div>
                          <p class="MsoNormal"
                            style="margin-left:35.4pt">record_route_advertised_address('INTERNAL_SRV');
                          </p>
                          <div>
                            <p class="MsoNormal"
                              style="margin-left:35.4pt"> </p>
                          </div>
                          <div>
                            <p class="MsoNormal"
                              style="margin-left:35.4pt">2020-02-25T20:14:57.078235+00:00,ip-10-0-16-53:
                              CRITICAL:
                              cbbcfe06-d181-467c-bbf4-78772aa0562f 2
                              16777053 INVITE:<core>
                              [core/msg_translator.c:514]:
                              lump_check_opt(): null send socket<br>
2020-02-25T20:14:57.078352+00:00,ip-10-0-16-53: CRITICAL:
                              cbbcfe06-d181-467c-bbf4-78772aa0562f 2
                              16777053 INVITE:<core>
                              [core/msg_translator.c:514]:
                              lump_check_opt(): null send socket</p>
                          </div>
                        </div>
                        <div>
                          <p class="MsoNormal"
                            style="margin-left:35.4pt"> </p>
                        </div>
                        <div>
                          <p class="MsoNormal"
                            style="margin-left:35.4pt">Any ideas? I'm
                            considering using insert_hf() to manually
                            add it and bypass whatever check is failing.
                            Thoughts?</p>
                        </div>
                        <div>
                          <p class="MsoNormal"
                            style="margin-left:35.4pt">Thanks</p>
                        </div>
                      </div>
                      <p class="MsoNormal" style="margin-left:35.4pt"> </p>
                      <pre style="margin-left:35.4pt">_______________________________________________</pre>
                      <pre style="margin-left:35.4pt">Kamailio (SER) - Users Mailing List</pre>
                      <pre style="margin-left:35.4pt"><a href="mailto:sr-users@lists.kamailio.org" target="_blank" moz-do-not-send="true">sr-users@lists.kamailio.org</a></pre>
                      <pre style="margin-left:35.4pt"><a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank" moz-do-not-send="true">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a></pre>
                    </blockquote>
                    <pre style="margin-left:35.4pt">-- </pre>
                    <pre style="margin-left:35.4pt">Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank" moz-do-not-send="true">www.asipto.com</a></pre>
                    <pre style="margin-left:35.4pt"><a href="http://www.twitter.com/miconda" target="_blank" moz-do-not-send="true">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank" moz-do-not-send="true">www.linkedin.com/in/miconda</a></pre>
                    <pre style="margin-left:35.4pt">Kamailio Advanced Training - March 9-11, 2020, Berlin - <a href="http://www.asipto.com" target="_blank" moz-do-not-send="true">www.asipto.com</a></pre>
                    <pre style="margin-left:35.4pt">Kamailio World Conference - April 27-29, 2020, in Berlin -- <a href="http://www.kamailioworld.com" target="_blank" moz-do-not-send="true">www.kamailioworld.com</a></pre>
                  </div>
                </blockquote>
              </div>
            </div>
          </div>
        </blockquote>
      </div>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - March 9-11, 2020, Berlin - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - April 27-29, 2020, in Berlin -- <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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