<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:x="urn:schemas-microsoft-com:office:excel" 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;}
@font-face
{font-family:Aptos;
panose-1:2 11 0 4 2 2 2 2 2 4;}
@font-face
{font-family:remialcxesans;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:zone-1;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:zones-AQ;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:Menlo;
panose-1:2 11 6 9 3 8 4 2 2 4;}
@font-face
{font-family:template-W0koJ2B3Ee-9_WBFvcEnUA;
panose-1:2 11 6 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:12.0pt;
font-family:"Aptos",sans-serif;
mso-ligatures:standardcontextual;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#467886;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Aptos",sans-serif;
color:windowtext;}
p.p1, li.p1, div.p1
{mso-style-name:p1;
margin:0cm;
font-size:11.5pt;
font-family:Menlo;
color:black;}
span.s1
{mso-style-name:s1;}
span.apple-converted-space
{mso-style-name:apple-converted-space;}
.MsoChpDefault
{mso-style-type:export-only;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style>
</head>
<body lang="EN-GB" link="#467886" vlink="#96607D" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">Hi folks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m using OpenSIPs as a load balancer in an active/active setup. I’m trying to set up call re-homing when a node in the cluster goes down, largely following
<a href="https://blog.opensips.org/2019/10/03/re-homing-your-calls-with-opensips-3-0/">
https://blog.opensips.org/2019/10/03/re-homing-your-calls-with-opensips-3-0/</a> . I’ve got separate shtags lb1 and lb2 for each node.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When the cluster down is detected, I am running a python script that sets the remaining node as active then aims to rehome the calls in progress. Currently, that works by getting dlg_list_ctx, then running dlg_send_sequential for each dialog
with a shtag matching the down node (dialog[‘context’][‘values’][‘dlgX_shtag’].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="p1">That’s fine for a few calls, but fails when we get to a few hundred because the dlg_list_ctx throws an error:<br>
<span class="s1">Jul</span><span class="apple-converted-space"> </span><span class="s1">9 09:47:00 ip-10-4-40-11 /usr/sbin/opensips[83438]: ERROR:core:print_mi_response: Failed to print JSON</span><o:p></o:p></p>
<p class="p1"><span class="s1">Jul</span><span class="apple-converted-space"> </span>
<span class="s1">9 09:47:00 ip-10-4-40-11 /usr/sbin/opensips[83438]: ERROR:mi_http:mi_json_answer_to_connection: failed to print json response</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any ideas recommendations on how to tackle this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I could use dlg_list_ctx specifying an index/counter to complete in batches, but I’m not quite sure how the indexing works so there’s a worry we’d miss calls. E.g. we do calls 0-40 then 41-80 but if call 0 ends while processing 0-40, does
that mean call 41 becomes call 40 so it’s missed from the 41-80 batch.<o:p></o:p></p>
<p class="MsoNormal"><br>
Probably the best solution I have at the moment is to query the DB directly to get the definitively list of call ids, then run dlg_list_ctx specifying and iID then dlg_send_sequential if appropriate. Or just don’t bother checking and run dlg_send_sequential
on them all.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any thoughts / suggestions?<o:p></o:p></p>
<div>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%;border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal">Best,<o:p></o:p></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%;border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 1.5pt 0cm">
<p class="MsoNormal"><o:p> </o:p></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%;border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:7.5pt;font-family:"Calibri",sans-serif;color:white">‑‑‑‑‑</span><span style="font-size:7.5pt;font-family:"Calibri",sans-serif;color:white;mso-ligatures:none"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="background:white;padding:0cm 0cm 0cm 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="bottom" style="padding:0cm 0cm 0cm 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="bottom" style="padding:0cm 7.5pt 3.75pt 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#1E285F">Ben Laing</span></b><b><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#1E285F"><o:p></o:p></span></b></p>
</td>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1111EE"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1111EE"><o:p></o:p></span></p>
</td>
<td valign="bottom" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#BEC2B9">He/Him</span><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:#BEC2B9"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#1E285F">Senior Software Developer</span><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:#1E285F"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
<td valign="bottom" style="border:none;border-left:solid #BEC2B9 1.0pt;padding:0cm 0cm 0cm 0cm">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="bottom" style="padding:0cm 0cm 3.75pt 7.5pt">
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse">
<tbody>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BEC2B9">Email: <u>ben.laing@dals.co.uk</u></span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BEC2B9"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#BEC2B9"><a href="http://www.dals.co.uk/" target="_blank" title="www.dals.co.uk"><span style="color:#BEC2B9;text-decoration:none">Website: </span><span style="color:#BEC2B9">www.dals.co.uk</span></a><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td valign="top" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1E285F">Dals, Statham House, Talbot Rd, Stretford, Manchester, M32 0FP</span></b><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1E285F"><o:p></o:p></span></b></p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal"><span style="font-size:1.0pt;font-family:remialcxesans"> </span><span style="font-size:1.0pt;font-family:"template-W0koJ2B3Ee-9_WBFvcEnUA",serif"> </span><span style="font-size:1.0pt;font-family:zone-1"> </span><span style="font-size:1.0pt;font-family:zones-AQ"> </span><o:p></o:p></p>
</div>
<br>
<p style="font-family:Calibri;font-size:10pt;color:#000000;margin:5pt;font-style:normal;font-weight:normal;text-decoration:none;" align="Left">
Classified - General<br>
</p>
</body>
</html>