<div dir="ltr">> I do not understand what is difficult, to configure the next hop application to send 100 trying? Or maybe you can provide a diagram of how sip traffic is routed on your case.<div><br></div><div>1) Diagram below is the case I described in the initial email. Here you can see incoming SIP PUBLISH and 3 forked legs towards Presence Servers.</div><div>As soon as Kamailio Proxy receives SIP PUBLISH it sends 200 Ok back. </div><div>The Presence Server that has active subscription answers with 200 OK otherwise 404 Not Found.</div><div>So the question was how to drop sending 200 OK (and any other replies) from Proxy to the left side.</div><div><div><br></div></div><div><img src="cid:ii_kkqvn6gz1" alt="image.png" width="562" height="199"><br></div><div><br></div><div>2) When I drop 200 OK in <b>reply_route</b>, Kamailio Proxy retransmits SIP PUBLISH to Presence Server.</div><div><br></div><div><img src="cid:ii_kkqwdjgm2" alt="image.png" width="562" height="333"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">чт, 4 февр. 2021 г. в 14:55, David Villasmil <<a href="mailto:david.villasmil.work@gmail.com">david.villasmil.work@gmail.com</a>>:<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 dir="auto">I think he’s trying to reply to the client immediately with a 200 and consume and not forward the 200 coming from the presence servers.</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 4 Feb 2021 at 12:43, Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</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>
    <p><br>
    </p>
    <div>On 04.02.21 12:59, Denys Pozniak wrote:<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">> If you need to stop the retransmission, a 100
        trying should be sent instead of 200ok. Can you reconfigure the
        next hop to do that? Or is it out of your control?<br>
        <div>Looks it is difficult to do this as Kamailio Proxy forks
          via append_branch() incoming SIP PUBLISH to all Presence
          Servers.<br>
        </div>
      </div>
    </blockquote>
    <p><br>
    </p>
    <p>I do not understand what is difficult, to configure the next hop
      application to send 100 trying? Or maybe you can provide a diagram
      of how sip traffic is routed on your case.</p>
    <p><br>
    </p>
    <blockquote type="cite">
      <div dir="ltr">
        <div>And even if Presence Server answers 200 OK, the Kamailio
          Proxy still sends a repeated SIP PUBLISH there within the fr
          timer.<br>
        </div>
      </div>
    </blockquote>
    <p><br>
    </p>
    <p>This remark is also not clear, is the 200ok handled by Kamailio,
      sent upstream, but then Kamailio still resends the PUBLISH?<br>
      <br>
      Cheers,<br>
      Daniel</p></div><div>
    <p><br>
    </p>
    <blockquote type="cite"><br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">чт, 4 февр. 2021 г. в 13:04,
          Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>>:<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>
            <p>Hello,</p>
            <p>if the 200ok is consumed by tm, it will destroy the
              transaction very soon. I am not sure this is a good path
              to go.<br>
            </p>
            <p>If you need to stop the retransmission, a 100 trying
              should be sent instead of 200ok. Can you reconfigure the
              next hop to do that? Or is it out of your control?</p>
            <p>Cheers,<br>
              Daniel<br>
            </p>
            <div>On 04.02.21 11:47, Denys Pozniak wrote:<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">
                <div>Hello!</div>
                <div><br>
                </div>
                <div>In the configuration below Kamailio Proxy creates a
                  transaction for the SIP PUBLISH to get info from the
                  HTTP server in async mode.</div>
                <div>But before creating a transaction, a synthetic 200
                  OK is sent, so that I need somehow to drop the real
                  200 OK from the upstream Presence Server.<br>
                </div>
                <div>If drop 200 OK in <b>reply_route</b>, tm module
                  starts to retransmit.<br>
                </div>
                <div>Those it is necessary that the 200 OK be consumed
                  by the tm module, but does not go further.<br>
                </div>
                <div><br>
                </div>
                <div><i>if ( !is_method("PUBLISH") ) {<br>
                  </i></div>
                <div><i>        sl_send_reply("200", "Ok");<br>
                            t_newtran();<br>
                  </i></div>
                <div><i>        $http_req(suspend) = 1;<br>
                             http_async_query("$var(url)", "CALLBACK");<br>
                  </i></div>
                <div><i>}</i></div>
                <div><i><br>
                  </i></div>
                <div><i>route[CALLBACK] {<br>
                  </i></div>
                <div><i>        <some header manipulation></i></div>
                <i>        t_on_reply("PUBLISH_REPLY");<br>
                          route(RELAY);<br>
                          exit;<br>
                </i>
                <div><i>}</i></div>
                <div><i><br>
                  </i></div>
                <div><i>onreply_route[PUBLISH_REPLY] {<br>
                            if ( t_check_status("200") ) {<br>
                                    <b>drop; # Does not work!!!</b><br>
                            }<br>
                    }<br>
                  </i></div>
                <div><br>
                </div>
                <div>Any advice is appreciated</div>
                <div><br>
                </div>
                -- <br>
                <div dir="ltr">
                  <div dir="ltr"><br>
                    <div>
                      <div>BR,</div>
                      <div>Denys Pozniak<br>
                      </div>
                      <div><br>
                      </div>
                      <div><br>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
              <br>
              <fieldset></fieldset>
              <pre>_______________________________________________
Kamailio (SER) - Users Mailing List
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</pre>
            </blockquote>
            <pre cols="72">-- 
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Funding: <a href="https://www.paypal.me/dcmierla" target="_blank">https://www.paypal.me/dcmierla</a></pre>
          </div>
        </blockquote>
      </div>
      <br clear="all">
      <div><br>
      </div>
      -- <br>
      <div dir="ltr">
        <div dir="ltr"><br>
          <div>
            <div>BR,</div>
            <div>Denys Pozniak<br>
            </div>
            <div><br>
            </div>
            <div><br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <pre cols="72">-- 
Daniel-Constantin Mierla -- <a href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Funding: <a href="https://www.paypal.me/dcmierla" target="_blank">https://www.paypal.me/dcmierla</a></pre>
  </div>

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</blockquote></div></div>-- <br><div dir="ltr"><div dir="ltr"><div>Regards,</div><div><br></div>David Villasmil<div>email: <a href="mailto:david.villasmil.work@gmail.com" target="_blank">david.villasmil.work@gmail.com</a></div><div>phone: +34669448337</div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><br><div><div>BR,</div><div>Denys Pozniak<br></div><div><br></div><div><br></div></div></div></div>