<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)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:0 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;}
@font-face
{font-family:Aptos;
panose-1:2 11 0 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:10.0pt;
font-family:"Aptos",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
code
{mso-style-priority:99;
font-family:"Courier New";}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Aptos",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
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-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt">Oh sorry I missed that in your email. I thought you were trying to avoid the failover.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Dropping the auth info on the DNS failover I don’t think is expected, since a DNS failover doesn’t trigger failure_route so you can’t add it back.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I’d recommend opening a bug for this on the Github, but maybe someone else has ideas.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Ben Newlin</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div id="mail-editor-reference-message-container">
<div>
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Users <users-bounces@lists.opensips.org> on behalf of nz deals <nzdealshelp@gmail.com><br>
<b>Date: </b>Friday, May 30, 2025 at 10:49</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">PM<br>
<b>To: </b>OpenSIPS users mailling list <users@lists.opensips.org><br>
<b>Subject: </b>Re: [OpenSIPS-Users] Issue with proxy failover and uac_auth()<o:p></o:p></span></p>
</div>
<div>
<div>
<div>
<div>
<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="border-collapse:collapse;border:none">
<tbody>
<tr>
<td style="border:solid #B60000 1.0pt;background:white;padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:#B60000"> EXTERNAL EMAIL - Please use caution with links and attachments <o:p></o:p></span></b></p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:Helvetica"><o:p> </o:p></span></p>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:Helvetica">
<hr size="0" width="100%" align="center">
</span></div>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt">Thank you for your response.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">The problem is, opensips sends the INVITE to secondary srv (failed over) without Authorization. It makes sense that the dns failover is not managed by opensips but atleast the same INVITE should be failover
to the secondary. Why the Authorization is removed when it goes to the secondary. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt">On Sat, 31 May 2025 at 03:52, Ben Newlin <<a href="mailto:Ben.Newlin@genesys.com">Ben.Newlin@genesys.com</a>> wrote:<o:p></o:p></span></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">The issue here is not really with the uac_auth module, as that module isn’t sending the message only updating it with the correct authentication info.</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">This is normal and correct behavior. When you send the message the second time using the same DNS, it will follow the same process as the first, trying
A then timing out and failing over to B. Standard DNS SRV doesn’t include any behavior to try to avoid non-responding nodes.</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">Ultimately what you need is to know the actual IP that elicited the 401 so the next INVITE with the authentication can be sent to the same one, using
$du or $dd(:$dp). Have you tried to get the remote IP in onreply_route and store it is an AVP using $si [1] or $socket_in [2]? I don’t think I’ve ever used one of these in a reply route. The documentation doesn’t specify whether it is valid and they will contain
the source of the reply, not the request.</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">[1] -
<a href="https://www.opensips.org/Documentation/Script-CoreVar-3-6#si" target="_blank">
https://www.opensips.org/Documentation/Script-CoreVar-3-6#si</a></span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt">[2] -
<a href="https://www.opensips.org/Documentation/Script-CoreVar-3-6#socket_in" target="_blank">
https://www.opensips.org/Documentation/Script-CoreVar-3-6#socket_in</a></span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Ben Newlin</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<div id="m_-4494914356532648699mail-editor-reference-message-container">
<div>
<div>
<div style="border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;border-color:currentcolor currentcolor">
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Users <<a href="mailto:users-bounces@lists.opensips.org" target="_blank">users-bounces@lists.opensips.org</a>> on behalf of nz deals <<a href="mailto:nzdealshelp@gmail.com" target="_blank">nzdealshelp@gmail.com</a>><br>
<b>Date: </b>Thursday, May 29, 2025 at 9:32</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><span style="font-size:12.0pt;color:black">AM<br>
<b>To: </b>OpenSIPS users mailling list <<a href="mailto:users@lists.opensips.org" target="_blank">users@lists.opensips.org</a>><br>
<b>Subject: </b>[OpenSIPS-Users] Issue with proxy failover and uac_auth()</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
</div>
<div>
<div>
<div>
<div>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td style="border:solid #B60000 1.0pt;background:white;padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:#B60000"> EXTERNAL EMAIL - Please use caution with links and attachments </span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:Helvetica"> </span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:Helvetica">
<hr size="0" width="100%" align="center">
</span></div>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Courier New"">Hi All,</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Courier New"">I'm using OpenSIPS 3.4 and managing carrier trunks via the registrant table. In the table, I'm using a proxy value like sips:mysip.xx.x</span><o:p></o:p></p>
<p><span style="font-size:10.0pt;font-family:"Courier New"">When the primary carrier A sbc SRV record becomes unreachable, OpenSIPS correctly times out INVITE and attempts to fail over to the secondary A record (via SRV).</span><o:p></o:p></p>
<p><span style="font-size:10.0pt;font-family:"Courier New"">The secondary endpoint responds with a 401 Unauthorized and includes a WWW-Authenticate header. At this point, I assume that opensips should not try on the primary carrier A SRV record otherwise it
will also timeout. but it is trying to send another INVITE with Authorization to the primary. this timeout because primary A SRV record is not responding. opensips sends another INVITE to secondary and this time its without Authorization. </span><o:p></o:p></p>
<p><span style="font-size:10.0pt;font-family:"Courier New"">Is there any way to fix this or work around it? Has anyone faced a similar problem when using
<code>uac_auth()</code> in combination with failover and the same proxy domain? </span>
<o:p></o:p></p>
<p><span style="font-size:10.0pt;font-family:"Courier New"">Any advice or suggestions would be greatly appreciated.
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
</div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Courier New"">Thank you</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
</div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Courier New"">Regards,</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Courier New"">Jason</span><span style="font-size:12.0pt"><o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<p class="MsoNormal"><span style="font-size:12.0pt">_______________________________________________<br>
Users mailing list<br>
<a href="mailto:Users@lists.opensips.org" target="_blank">Users@lists.opensips.org</a><br>
<a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users" target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></span></p>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</body>
</html>