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<p>Hello,</p>
<p>it is quite common to have a lookahead approach to match the
longest value, which looks like happening in your case for 2nd
contact header. We just leverage the libc regex functions, it is
not a custom implementation in Kamailio.</p>
<p>You should try to exclude having > in .+ matched value, maybe
with a regexp like:</p>
<p>@([^>]+)></p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 25.11.22 22:15, Salvinder Parhar
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAG8SwHAXzbiPU=2V=PGSvKcOhOS3ksGa_aiXh7rQGbbyyvHGrQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi,<br>
<br>
I'm trying to capture and substitute the host IP of contact
header using the subst_hf but it's not working as expected. I
tested my regex in a tester and it works fine there but not in
the Kamailio config.<br>
<br>
Regex: @(.+?)><br>
<br>
Substitution: @PUBLIC_IP:5060><br>
<br>
Three contact headers that I'm trying to match;<br>
<br>
Contact:<<a class="moz-txt-link-freetext" href="sip:0065*">sip:0065*</a><a href="http://7766@172.16.1.217:5060"
moz-do-not-send="true">7766@172.16.1.217:5060</a>>;methods="INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0065*">sip:0065*</a><a href="mailto:7788@172.16.1.216"
moz-do-not-send="true" class="moz-txt-link-freetext">7788@172.16.1.216</a>;transport=udp>;expires=3600;reg-id=1;+sip.instance="<urn:uuid:03660bc5-bb70-4784-8ac5-000413B108BA>"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0925*">sip:0925*</a><a href="http://0007@172.16.1.218:5060"
moz-do-not-send="true">0007@172.16.1.218:5060</a>><br>
<br>
Outcome I'm expecting for the three contact headers;<br>
<br>
Contact:<a class="moz-txt-link-rfc2396E" href="sip:0065*7766@PUBLIC_IP:5060"><sip:0065*7766@PUBLIC_IP:5060></a>;methods="INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER"<br>
<br>
Contact:
<a class="moz-txt-link-rfc2396E" href="sip:0065*7788@PUBLIC_IP:5060"><sip:0065*7788@PUBLIC_IP:5060></a>;expires=3600;reg-id=1;+sip.instance="<urn:uuid:03660bc5-bb70-4784-8ac5-000413B108BA>"<br>
<br>
Contact: <a class="moz-txt-link-rfc2396E" href="sip:0925*0007@PUBLIC_IP:5060"><sip:0925*0007@PUBLIC_IP:5060></a><br>
<br>
This regex in Kamailio works fine for the first and third
contact header but for the second contact header it matches all
the way to the end of the contact header excluding the quote (")
sign. I've tried so many other combinations [like @(.+?)>;? ]
of regex but nothing seems to work.<br>
<br>
Is there a way to accomplish this with one regex?<br>
<br>
Thanks,<br>
Sal<br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, 25 Nov 2022 at 16:10,
Salvinder Parhar <<a
href="mailto:salvinder.parhar09@gmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">salvinder.parhar09@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 dir="ltr">Hi,
<div><br>
</div>
<div>I'm trying to capture and substitute the host IP of
contact header using the subst_hf but it's not working as
expected. I tested my regex in a tester and it works fine
there but not in Kamailio config.</div>
<div><br>
</div>
<div><b>Regex:</b> @(.+?)></div>
<div><br>
</div>
<div><b>Substitution:</b> <a class="gmail_plusreply"
id="m_2192040369922161123plusReplyChip-0"
moz-do-not-send="true">@PUBLIC_IP:5060></a></div>
<div><br>
</div>
<div><b>Three contact headers that I'm trying to match;</b></div>
<div><br>
</div>
<div>Contact:<<a class="moz-txt-link-freetext" href="sip:0065*">sip:0065*</a><a
href="http://7766@199.48.100.166:5060" target="_blank"
moz-do-not-send="true">7766@199.48.100.166:5060</a>>;methods="INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0065*">sip:0065*</a><a href="mailto:7788@172.16.1.216"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">7788@172.16.1.216</a>;transport=udp>;expires=3600;reg-id=1;+sip.instance="<urn:uuid:03660bc5-bb70-4784-8ac5-000413B108BA>"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0925*">sip:0925*</a><a
href="http://0007@199.48.100.166:5060" target="_blank"
moz-do-not-send="true">0007@199.48.100.166:5060</a>><br>
</div>
<div><br>
</div>
<div><b>Outcome I'm expecting for the three contact headers;</b></div>
<div><br>
</div>
<div>Contact:<<a class="moz-txt-link-freetext" href="sip:0065*7766">sip:0065*7766</a><a class="gmail_plusreply"
id="m_2192040369922161123gmail-plusReplyChip-0"
moz-do-not-send="true"><b>@PUBLIC_IP:5060></b></a>;methods="INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0065*7788">sip:0065*7788</a><a class="gmail_plusreply"
id="m_2192040369922161123gmail-plusReplyChip-0"
moz-do-not-send="true"><b>@PUBLIC_IP:5060></b></a>;expires=3600;reg-id=1;+sip.instance="<urn:uuid:03660bc5-bb70-4784-8ac5-000413B108BA>"<br>
<br>
Contact: <<a class="moz-txt-link-freetext" href="sip:0925*0007">sip:0925*0007</a><a class="gmail_plusreply"
id="m_2192040369922161123gmail-plusReplyChip-0"
moz-do-not-send="true"><b>@PUBLIC_IP:5060></b></a><br>
</div>
<div><br>
</div>
<div>This regex in Kamailio works fine for the first and
third contact header but for the second contact header it
matches all the way to the end of the contact header
excluding the quote (") sign. I've tried so many other
combinations [like <b>@(.+?)>;?</b> ] of regex but
nothing seems to work.</div>
<div><br>
</div>
Is there a way to accomplish this with one regex?
<div><br>
</div>
<div>Thanks,</div>
<div>Sal</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
<a class="gmail_plusreply" moz-do-not-send="true"><b><br>
</b></a></div>
<div><a class="gmail_plusreply" moz-do-not-send="true"><b><br>
</b></a></div>
<div><br>
</div>
<div><br>
</div>
</div>
</blockquote>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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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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