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    <p><tt>Hi Dragomir,</tt></p>
    <p><tt>There is no "Expires" in REGISTER, so $hdr(expires) prints
        "<null>". Try $(hdr(Contact){uri.param,expires}).</tt></p>
    <p><tt>Regards,<br>
      </tt></p>
    <pre class="moz-signature" cols="72">Liviu Chircu
OpenSIPS Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
    <div class="moz-cite-prefix">On 27.11.2017 13:46, Dragomir
      Haralambiev wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CADzurOLueciqOmtNP8RGi76wV2hHRLyW1h1qZwFJ0=U8aKHQEA@mail.gmail.com">
      <div dir="ltr">Hello,
        <div><br>
        </div>
        <div>I try to get expires from REGISTER.</div>
        <div>xlog("Expires=$hdr(expires)\n");<br>
        </div>
        <div><br>
        </div>
        <div>I receive this:</div>
        <div>
          <div>Expires=<null></div>
        </div>
        <div><br>
        </div>
        <div>Here is REGISTER</div>
        <div><br>
        </div>
        <div>
          <div>Session Initiation Protocol (SIP as raw text)</div>
          <div>    REGISTER sip:<a href="http://sip-server.com:5060"
              moz-do-not-send="true">sip-server.com:5060</a> SIP/2.0\r\n</div>
          <div>    Accept: application/reginfo+xml, application/sdp,
            application/simple-message-summary, message/sipfrag,
            multipart/mixed, multipart/related\r\n</div>
          <div>    Via: SIP/2.0/UDP
            10.152.220.38:5062;branch=z9hG4bKde569c7a0f7678fe1;rport\r\n</div>
          <div>    Max-Forwards: 70\r\n</div>
          <div>    From: "55555555" <<a
              href="http://sip:55555555@sip-server.com:5060"
              moz-do-not-send="true">sip:55555555@sip-server.com:5060</a>>;tag=026b9b8a13\r\n</div>
          <div>    To: "55555555" <<a
              href="http://sip:55555555@sip-server.com:5060"
              moz-do-not-send="true">sip:55555555@sip-server.com:5060</a>>\r\n</div>
          <div>    Call-ID: de52071eacc30295\r\n</div>
          <div>    CSeq: 448743846 REGISTER\r\n</div>
          <div>    Allow: ACK, BYE, CANCEL, INVITE, MESSAGE, NOTIFY,
            OPTIONS, REFER, SUBSCRIBE, UPDATE\r\n</div>
          <div>    Contact: <<a
              href="http://sip:55555555@10.152.220.38:5062"
              moz-do-not-send="true">sip:55555555@10.152.220.38:5062</a>>;audio;expires=120\r\n</div>
          <div>    User-Agent: Media5-fone/4.25.4.13060
            Android/8.0.0\r\n</div>
          <div>    Content-Length: 0\r\n</div>
          <div>    \r\n</div>
        </div>
      </div>
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      <pre wrap="">_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a>
</pre>
    </blockquote>
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