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    <p>Hello,</p>
    <p>if you use more operations over the headers, they do not override
      each other, they typically add to the content. Use
      msg_apply_changes() between such operations, see:</p>
    <p>  * <a
href="https://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or">https://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or</a></p>
    <p>Cheers,<br>
      Daniel<br>
    </p>
    <div class="moz-cite-prefix">On 07.04.20 09:17, Mack Hendricks
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:31D872A5-7922-4A16-9F22-E0C446441062@dopensource.com">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Hey Daniel,
      <div class=""><br class="">
      </div>
      <div class="">I hope all is well!</div>
      <div class=""><br class="">
      </div>
      <div class="">I tried to make it super simple</div>
      <div class=""><br class="">
      </div>
      <div class="">The regular expression is this:</div>
      <div class=""><br class="">
      </div>
      <div class="">subst_hf("Contact", "/@.*>/@107.21.184.251>/",
        "a”);</div>
      <div class=""><br class="">
      </div>
      <div class="">The Contact looks like this</div>
      <div class=""><br class="">
      </div>
      <div class="">Contact: <<a
          href="sip:3135421245@10.0.0.140:53349;alias=98.209.240.245~53349~1"
          class="" moz-do-not-send="true">sip:3135421245@10.0.0.140:53349;alias=98.209.240.245~53349~1</a>></div>
      <div class=""><br class="">
      </div>
      <div class="">It ends up like this (it concatenates it)</div>
      <div class=""><br class="">
      </div>
      <div class="">Contact: <<a
href="sip:3135421245@10.0.0.140:53349;alias=98.209.240.245~53349~1@107.21.184.251"
          class="" moz-do-not-send="true">sip:3135421245@10.0.0.140:53349;alias=98.209.240.245~53349~1@107.21.184.251</a>></div>
      <div class=""><br class="">
      </div>
      <div class="">I really want this</div>
      <div class=""><br class="">
      </div>
      <div class="">Contact: <<a href="sip:3135421245@107.21.184.251"
          class="" moz-do-not-send="true">sip:3135421245@107.21.184.251</a>></div>
      <div class=""><br class="">
      </div>
      <div class="">I do call Nathelper functions in some cases.  I can
        comment those out.  What am I missing?</div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div><br class="">
          <blockquote type="cite" class="">
            <div class="">On Apr 7, 2020, at 2:54 AM, Daniel-Constantin
              Mierla <<a href="mailto:miconda@gmail.com" class=""
                moz-do-not-send="true">miconda@gmail.com</a>> wrote:</div>
            <br class="Apple-interchange-newline">
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                charset=UTF-8" class="">
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                <p class="">Hello,</p>
                <p class="">what is the result? Do you use other
                  functions that may change the contact (like those from
                  nathelper)?</p>
                <p class="">Cheers,<br class="">
                  Daniel<br class="">
                </p>
                <div class="moz-cite-prefix">On 06.04.20 15:34, Mack
                  Hendricks wrote:<br class="">
                </div>
                <blockquote type="cite"
                  cite="mid:146AA491-2EB7-4097-8FFE-B87DA07E62D0@dopensource.com"
                  class="">
                  <meta http-equiv="Content-Type" content="text/html;
                    charset=UTF-8" class="">
                  <meta http-equiv="Content-Type" content="text/html;
                    charset=UTF-8" class="">
                  <div style="word-wrap: break-word; -webkit-nbsp-mode:
                    space; line-break: after-white-space;" class="">Hey
                    All,
                    <div class=""><br class="">
                    </div>
                    <div class="">I always have issues with substituting
                      out header values.  I’ve tried subst and subst_hf.
                        </div>
                    <div class=""><br class="">
                    </div>
                    <div class="">Here is the value that I want to
                      change out:</div>
                    <div class=""><br class="">
                    </div>
                    <div class="">Contact: <<a
href="sip:52.41.52.34:5060;line=sr-h06Cy7RYRFkYacM0a7epa7sVa7sVRcNCW7IbaGZ9RGlC"
                        class="" moz-do-not-send="true">sip:52.41.52.34:5060;line=sr-h06Cy7RYRFkYacM0a7epa7sVa7sVRcNCW7IbaGZ9RGlC</a>></div>
                    <div class=""><br class="">
                    </div>
                    <div class=""> And this is what I want it to be</div>
                    <div class=""><br class="">
                    </div>
                    <div class="">Contact: <<a
                        href="sip:1313717555@jump.dsiprouter.net"
                        class="" moz-do-not-send="true">sip:1313717555@jump.dsiprouter.net</a>;line=sr-h06Cy7RYRFkYacM0a7epa7sVa7sVRcNCW7IbaGZ9RGlC></div>
                    <div class=""><br class="">
                    </div>
                    <div class="">I’m using this </div>
                    <div class=""><br class="">
                    </div>
                    <div class="">subst('/^Contact: <a
                        class="moz-txt-link-rfc2396E"
                        href="sip:(.*);(.*)" moz-do-not-send="true"><sip:(.*);(.*)></a>$/Contact:
                      <<a
                        href="sip:1313717555@jump.dsiprouter.net;\2"
                        class="" moz-do-not-send="true">sip:1313717555@jump.dsiprouter.net;\2</a>>\r/ig’);</div>
                    <div class=""><br class="">
                    </div>
                    <div class="">And it doesn’t work, but putting into
                      a online regular expression tester it looks good
                      as shown below.  Any ideas? </div>
                    <div class=""><br class="">
                    </div>
                    <div class=""><br class="">
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                  <br class="">
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                  <pre class="moz-quote-pre" wrap="">_______________________________________________
Kamailio (SER) - Users Mailing List
<a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.kamailio.org" moz-do-not-send="true">sr-users@lists.kamailio.org</a>
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</pre>
                </blockquote>
                <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com/" moz-do-not-send="true">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" moz-do-not-send="true">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" moz-do-not-send="true">www.linkedin.com/in/miconda</a></pre>
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    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<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></pre>
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