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    <tt>Hi,<br>
      <br>
      use the append_to_reply() function<br>
      <br>
<a class="moz-txt-link-freetext" href="https://opensips.org/html/docs/modules/3.1.x/sipmsgops.html#func_append_to_reply">https://opensips.org/html/docs/modules/3.1.x/sipmsgops.html#func_append_to_reply</a><br>
      <br>
      Regards,<br>
    </tt>
    <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
  <a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
OpenSIPS Bootcamp 2021 online
  <a class="moz-txt-link-freetext" href="https://opensips.org/training/OpenSIPS_eBootcamp_2021/">https://opensips.org/training/OpenSIPS_eBootcamp_2021/</a></pre>
    <div class="moz-cite-prefix">On 4/16/21 12:22 PM, solarmon wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAOXfywPs72HrBSsTezvTVx062VosBvGdyxq=2cUN-r9DaOtZZw@mail.gmail.com">
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      <div dir="ltr">Hi,<br>
        <div><br>
        </div>
        <div>We have a code that response back with a "503 Service not
          available" if it has exhausted all the dispatcher endpoints -
          see end of email.</div>
        <div><br>
        </div>
        <div>It would be useful if we casn send back the Reason header
          of the last rejection. Could this be done and what should I
          look at?</div>
        <div><br>
        </div>
        <div>Thank you!</div>
        <div><br>
        </div>
        <div>failure_route[call_failover]<br>
          {<br>
                  xlog("[$ci] call failed to established with
          $T_reply_code code\n");<br>
          <br>
                  rtpproxy_unforce("$avp(rtpp_set)");<br>
          <br>
                  if (t_was_cancelled()) {<br>
                          t_reply("487","Request cancelled");<br>
                          exit;<br>
                  }<br>
          <br>
                  # any failure indication ?<br>
                  if ( t_check_status("[56][0-9][0-9]")<br>
                  || (t_check_status("408") &&
          t_local_replied("all"))<br>
                  ) {<br>
                          xlog("[$ci] destination $rd failed  with
          $T_reply_code -> retry\n ");<br>
          <br>
                          ###ds_mark_dst("p");<br>
          <br>
                          if ( ds_next_domain() ) {<br>
                                  xlog("[$ci] using new destination
          <$rd>\n ");<br>
          <br>
                                  # send it out again<br>
                                  t_on_failure("call_failover");<br>
                                  t_relay();<br>
                                  exit;<br>
                          } else {<br>
                                  xlog("[$ci] no other destination to
          retry\n ");<br>
                                  t_reply("503","Service not
          available");<br>
                                  exit;<br>
                          }<br>
                  }<br>
          <br>
                  # if call failure, allow the reply to propagate to
          caller<br>
                  exit;<br>
          }<br>
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      <br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
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