<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=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@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;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.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="EN-GB" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Does the ACK has the correct Router headers and R-URI? Maybe you can share the 200 OK and the ACK headers..<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I had a similar issue 3 weeks ago.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Cheers, Francisco.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><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"><b><span lang="EN-US" style="mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-GB"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Oliver Roth<br>
<b>Sent:</b> 29 June 2016 15:55<br>
<b>To:</b> sr-users@lists.sip-router.org<br>
<b>Subject:</b> [SR-Users] ACK / BYE transaction problem<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">Hi all<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH">Follow scenario<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Class5 system [c5] </span><span lang="EN-US" style="font-family:Wingdings">à</span><span lang="EN-US"> Loadbalancer kamailio (dispatcher module) [lbl] -</span><span lang="DE-CH" style="font-family:Wingdings">à</span><span lang="EN-US">
gateway kamailio [gw] </span><span lang="EN-US" style="font-family:Wingdings">à</span><span lang="EN-US"> carrier [carr]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I get Invites from [c5] with<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Request ,To, from, contact, pid in national format 0794445566<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">[lbl] dispatches this to [gw]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">For the [carr] I need international format.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So doing these transactions in [gw]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And sending to [carr] in international format<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Request, to, from, contact, … => 417794445566<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Everything ok<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Then I get a 100, 183 and even 200 from [carr]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Ack is coming from [c5] to [lbl] and [gw] – but then it stocks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The ACK is not sent to the [carr]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I kamailio log I see<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEBUG: RFC3261 transaction matching failed<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEBUG: t_lookup_request: no transaction found<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">So for me, the ACK cannot be assigned to a transaction and gets discarded by
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">if ( is_method("ACK") ) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - not loose route\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if ( t_check_trans() ) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - t_check_trans() \n");
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # no loose-route, but stateful ACK;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # must be an ACK after a 487<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # or e.g. 404 from upstream server<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> t_relay();<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> } else {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - not t_check_trans() DISCARD!!\n");
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # ACK without matching transaction ... ignore and discard<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> route(NATMANAGE);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> #t_relay();<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> #exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any idea?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Problem with modifying the sip tags? Or problem with the dialog?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for helping<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OIi<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</body>
</html>