<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
span.E-MailFormatvorlage20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="DE" link="#0563C1" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Just a note - maybe you are having some special requirements, but usually you do not need to manipulate the Via header in Kamailio.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">If you are relaying the request, why do you do not want to have a Via added to the message? It’s a requirement by RFC 3261 for a stateful proxy.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning Westerholt –
</span><span style="mso-fareast-language:EN-US"><a href="https://skalatan.de/blog/"><span lang="EN-GB">https://skalatan.de/blog/</span></a></span><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Kamailio services –
</span><span style="mso-fareast-language:EN-US"><a href="https://gilawa.com/"><span lang="EN-GB">https://gilawa.com</span></a></span><span style="mso-fareast-language:EN-US">
<span lang="EN-GB"><o:p></o:p></span></span></p>
</div>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b> Richard Robson <richard@rikrobson.co.uk>
<br>
<b>Sent:</b> Tuesday, September 7, 2021 3:13 PM<br>
<b>To:</b> Henning Westerholt <hw@skalatan.de>; Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> Re: [SR-Users] via header not removed wit hremove_hf()<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">hi ,<o:p></o:p></p>
<p style="margin-left:35.4pt">Thanks Hennig,<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">I added the counts to check and i'll retest with the ms_+appl_changes() too.<o:p></o:p></p>
<p style="margin-left:35.4pt">The real problem is that the Via is getting into the relayed INVITE. I had assumed that it would not get relayed if it were removed.<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">Regards,<o:p></o:p></p>
<p style="margin-left:35.4pt"><o:p> </o:p></p>
<p style="margin-left:35.4pt">Richard<o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt">On 07/09/2021 14:05, Henning Westerholt wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-left:35.4pt"><span style="mso-fareast-language:EN-US">Hello,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US">please have a look here
<a href="http://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or">
http://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or</a></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="mso-fareast-language:EN-US">Cheers,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="mso-fareast-language:EN-US">Henning</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US">--
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning Westerholt –
</span><span style="mso-fareast-language:EN-US"><a href="https://skalatan.de/blog/"><span lang="EN-GB">https://skalatan.de/blog/</span></a></span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US">Kamailio services –
</span><span style="mso-fareast-language:EN-US"><a href="https://gilawa.com/"><span lang="EN-GB">https://gilawa.com</span></a>
</span><o:p></o:p></p>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:70.8pt"><b><span lang="EN-GB">From:</span></b><span lang="EN-GB"> sr-users
<a href="mailto:sr-users-bounces@lists.kamailio.org"><sr-users-bounces@lists.kamailio.org></a>
<b>On Behalf Of </b>Richard Robson<br>
<b>Sent:</b> Tuesday, September 7, 2021 2:10 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <a href="mailto:sr-users@lists.kamailio.org">
<sr-users@lists.kamailio.org></a><br>
<b>Subject:</b> [SR-Users] via header not removed wit hremove_hf()</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:70.8pt"><span lang="EN-GB"> </span><o:p></o:p></p>
<p style="margin-left:70.8pt">during testing I need to remove a Via header<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
This is the code snippet<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">route[REPLACE_VIA] {</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> xlog ("L_INFO", "[REPLACE_VIA] Start of block\n");</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> xlog ("L_INFO", "[REPLACE_VIA] $hdrc(Via) Via headers\n");</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> if(remove_hf("Via")) {</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> xlog ("L_INFO", "[REPLACE_VIA] removed Via\n");</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> }</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> else {</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> xlog ("L_INFO", "[REPLACE_VIA] did not remove Via\n");</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> }</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> xlog ("L_INFO", "[REPLACE_VIA] $hdrc(Via) Via headers\n");</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
and this is the logs output<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">Sep 7 08:00:00 INFO: _LOG: 3a547f956d65fe985ba189916047fc320ae150ad: [REPLACE_RURI] Start of block</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">Sep 7 08:00:00 INFO: _LOG: 3a547f956d65fe985ba189916047fc320ae150ad: [REPLACE_VIA] Start of block</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">Sep 7 08:00:00 INFO: _LOG: 3a547f956d65fe985ba189916047fc320ae150ad: [REPLACE_VIA] 1 Via headers</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">Sep 7 08:00:00 INFO: _LOG: 3a547f956d65fe985ba189916047fc320ae150ad: [REPLACE_VIA] removed Via</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">Sep 7 08:00:00 INFO: _LOG: 3a547f956d65fe985ba189916047fc320ae150ad: [REPLACE_VIA] 1 Via headers</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<span style="font-family:"Courier New",serif">From the logs it looks like the remove_hf returns true and we have the header removed, but its still counting the Via header and the Via Header is still present when the INVIE is releyed on</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Richard<o:p></o:p></p>
</blockquote>
</div>
</body>
</html>