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    <p>Hello,</p>
    <p>do you have a pcap with all messages for such call (invite,
      replies, cancel)? It is important to see if the transaction
      matching elements are properly set.</p>
    <p>In general, the rule for cancel is to be sent in the same way
      (with the same elements) as the invite, because cancel is not a
      standalone transaction, it must match the associated invite one.<br>
    </p>
    Cheers,<br>
    Daniel<br>
    <br>
    <div class="moz-cite-prefix">On 18.04.18 16:59, Kelvin Chua wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAMF97-d41QPNe_2sSh=YKg_3074F+mjrBgWJ3Sb0q1Kzu+0icw@mail.gmail.com">
      <div dir="auto">after couple of tests, it is still hit and miss,
        sometimes it matches, sometimes it does not.</div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Wed, Apr 18, 2018, 6:47 PM Kelvin Chua <<a
            href="mailto:kelchy@gmail.com" moz-do-not-send="true">kelchy@gmail.com</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div dir="ltr">thanks alex, will test this out further but
            looks good at the moment
            <div>any idea why it is not matching when RURI has the port
              if i only use t_check_trans() and relay?</div>
          </div>
          <div class="gmail_extra"><br clear="all">
            <div>
              <div class="m_8706939025228119807gmail_signature"
                data-smartmail="gmail_signature">Kelvin Chua</div>
            </div>
            <br>
            <div class="gmail_quote">On Wed, Apr 18, 2018 at 3:44 PM,
              Alex Balashov <span dir="ltr"><<a
                  href="mailto:abalashov@evaristesys.com"
                  target="_blank" rel="noreferrer"
                  moz-do-not-send="true">abalashov@evaristesys.com</a>></span>
              wrote:<br>
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex">Try
                this instead:<br>
                <br>
                   route {<br>
                      ...<br>
                <br>
                      t_check_trans();<br>
                <br>
                      ...<br>
                <br>
                      if(is_method("CANCEL")) {<br>
                         if(!t_relay_cancel()) <br>
                            sl_send_reply("500", "Internal Server
                Error");<br>
                <br>
                         exit;<br>
                      }<br>
                   }<br>
                <span class="m_8706939025228119807HOEnZb"><font
                    color="#888888"><br>
                    -- Alex<br>
                    <br>
                    -- <br>
                    Alex Balashov | Principal | Evariste Systems LLC<br>
                    <br>
                    Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) <br>
                    Web: <a href="http://www.evaristesys.com/"
                      rel="noreferrer noreferrer" target="_blank"
                      moz-do-not-send="true">http://www.evaristesys.com/</a>,
                    <a href="http://www.csrpswitch.com/" rel="noreferrer
                      noreferrer" target="_blank" moz-do-not-send="true">http://www.csrpswitch.com/</a><br>
                    <br>
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                  </font></span></blockquote>
            </div>
            <br>
          </div>
        </blockquote>
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    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla
<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 - April 16-18, 2018, Berlin - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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