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    <p>Hello,</p>
    <p>maybe keep_hf() can help a bit:</p>
    <p>  -
<a class="moz-txt-link-freetext" href="https://www.kamailio.org/docs/modules/stable/modules/textopsx.html#textopsx.f.keep_hf">https://www.kamailio.org/docs/modules/stable/modules/textopsx.html#textopsx.f.keep_hf</a></p>
    <p>Or look at topos module (with the note that was just added in 4.4
      and not much tested).</p>
    <p>Cheers,<br>
      Daniel<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 06/07/16 12:02, Anonim Stefan wrote:<br>
    </div>
    <blockquote
cite="mid:CAO7wsJskkbB1MNcy3P+sXxoDUzM5CxcX7DPEYALYrazhJqTKmw@mail.gmail.com"
      type="cite">
      <div dir="ltr">
        <div>
          <div>Hi,<br>
            <br>
            True, I was thinking only about the "Via" and "Record-Route"
            added by Kamailio. Didn't know Record-Route had no short
            form (I was thinking of something like "rr" due to rr module
            I guess). In this case I suppose there is not much to gain,
            only from "Via".<br>
            <br>
            I'm facing some fragmentation issues. My goal is to make the
            SIP packet as small as possible while removing as less SIP
            headers as I can. I'd still like to use UDP.<br>
            <br>
          </div>
          Thanks,<br>
        </div>
        Stefan<br>
        <div>
          <div><br>
          </div>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, Jul 6, 2016 at 12:48 PM,
          Daniel-Constantin Mierla <span dir="ltr"><<a
              moz-do-not-send="true" href="mailto:miconda@gmail.com"
              target="_blank">miconda@gmail.com</a>></span> wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Record-Route
            has no compact name variant, afaik -- also quickly checking<br>
            the iana assignments, shows the same:<br>
            <br>
              -<br>
            <a moz-do-not-send="true"
href="http://www.iana.org/assignments/sip-parameters/sip-parameters.xhtml#sip-parameters-2"
              rel="noreferrer" target="_blank">http://www.iana.org/assignments/sip-parameters/sip-parameters.xhtml#sip-parameters-2</a><br>
            <br>
            If smaller size is the target, then Via makes no big
            difference, so it<br>
            was never a goal -- the changes in code should not be big.<br>
            <br>
            A quick option is to redefine MY_VIA in config.h to use the
            compact form.<br>
            <br>
            A proper option could be introducing a core parameter,
            adding a new<br>
            define for the short version and use the normal or short
            form a matter<br>
            of the parameter value. The function that needs to be
            changed is<br>
            via_builder().<br>
            <br>
            Cheers,<br>
            Daniel<br>
            <div class="HOEnZb">
              <div class="h5"><br>
                <br>
                On 06/07/16 11:40, Olle E. Johansson wrote:<br>
                >> On 06 Jul 2016, at 11:38, Alex Balashov <<a
                  moz-do-not-send="true"
                  href="mailto:abalashov@evaristesys.com">abalashov@evaristesys.com</a>>
                wrote:<br>
                >><br>
                >> Stefan,<br>
                >><br>
                >> The construction of headers is generally the
                province of the UAs/endpoints of the call. Kamailio
                understands compact headers, as all compliant SIP stacks
                do, but it can't singlehandedly reformat them.<br>
                > I think the question was about the headers added by
                Kamailio - Via and Record-Route. Which makes the
                question perfectly valid :-)<br>
                > I can’t remember such a setting anywhere and am
                curious on why it’s needed.<br>
                > /O<br>
                ><br>
                > _______________________________________________<br>
                > SIP Express Router (SER) and Kamailio (OpenSER) -
                sr-users mailing list<br>
                > <a moz-do-not-send="true"
                  href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a><br>
                > <a moz-do-not-send="true"
                  href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
                  rel="noreferrer" target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
                <br>
              </div>
            </div>
            <span class="HOEnZb"><font color="#888888">--<br>
                Daniel-Constantin Mierla<br>
                <a moz-do-not-send="true" href="http://www.asipto.com"
                  rel="noreferrer" target="_blank">http://www.asipto.com</a>
                - <a moz-do-not-send="true"
                  href="http://www.kamailio.org" rel="noreferrer"
                  target="_blank">http://www.kamailio.org</a><br>
                <a moz-do-not-send="true"
                  href="http://twitter.com/#%21/miconda"
                  rel="noreferrer" target="_blank">http://twitter.com/#!/miconda</a>
                - <a moz-do-not-send="true"
                  href="http://www.linkedin.com/in/miconda"
                  rel="noreferrer" target="_blank">http://www.linkedin.com/in/miconda</a><br>
              </font></span>
            <div class="HOEnZb">
              <div class="h5"><br>
                <br>
                _______________________________________________<br>
                SIP Express Router (SER) and Kamailio (OpenSER) -
                sr-users mailing list<br>
                <a moz-do-not-send="true"
                  href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a><br>
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                  href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users"
                  rel="noreferrer" target="_blank">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><br>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla
<a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a> - <a class="moz-txt-link-freetext" href="http://www.kamailio.org">http://www.kamailio.org</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a></pre>
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