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<p>its a bit of a hack, but the bottom line is the Via has a private
IP address in it which the carrier we are using does not like and
is rejection the call. so i want to remove it to prove a point.</p>
<p>its getting relayed from a kamailio that has topology hiding to
a carrier by this intermediate box and this intermediate bos has
some manual TH. Its not my design and i'm just trying to fix it.</p>
<p><br>
</p>
<p>R<br>
</p>
<div class="moz-cite-prefix">On 07/09/2021 14:25, Henning Westerholt
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:PAXPR05MB85583484309EC8F94111580FC5D39@PAXPR05MB8558.eurprd05.prod.outlook.com">
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<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 style="mso-fareast-language:EN-US"
lang="EN-GB">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 style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">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 style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Henning Westerholt –
</span><span style="mso-fareast-language:EN-US"><a
href="https://skalatan.de/blog/" moz-do-not-send="true"><span
lang="EN-GB">https://skalatan.de/blog/</span></a></span><span
style="mso-fareast-language:EN-US" lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"
lang="EN-GB">Kamailio services –
</span><span style="mso-fareast-language:EN-US"><a
href="https://gilawa.com/" moz-do-not-send="true"><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 style="mso-fareast-language:EN-US"
lang="EN-GB"><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 <a class="moz-txt-link-rfc2396E" href="mailto:richard@rikrobson.co.uk"><richard@rikrobson.co.uk></a>
<br>
<b>Sent:</b> Tuesday, September 7, 2021 3:13 PM<br>
<b>To:</b> Henning Westerholt <a class="moz-txt-link-rfc2396E" href="mailto:hw@skalatan.de"><hw@skalatan.de></a>;
Kamailio (SER) - Users Mailing List
<a class="moz-txt-link-rfc2396E" href="mailto:sr-users@lists.kamailio.org"><sr-users@lists.kamailio.org></a><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
style="mso-fareast-language:EN-US" lang="EN-GB">please
have a look here
<a
href="http://www.kamailio.org/wiki/tutorials/faq/main#why_changes_made_to_headers_or"
moz-do-not-send="true">
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
style="mso-fareast-language:EN-US" lang="EN-GB"> </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
style="mso-fareast-language:EN-US" lang="EN-GB"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">--
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:35.4pt"><span
style="mso-fareast-language:EN-US" lang="EN-GB">Henning
Westerholt –
</span><span style="mso-fareast-language:EN-US"><a
href="https://skalatan.de/blog/"
moz-do-not-send="true"><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
style="mso-fareast-language:EN-US" lang="EN-GB">Kamailio
services –
</span><span style="mso-fareast-language:EN-US"><a
href="https://gilawa.com/" moz-do-not-send="true"><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
style="mso-fareast-language:EN-US" lang="EN-GB"> </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"
moz-do-not-send="true"><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"
moz-do-not-send="true">
<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>
</blockquote>
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