<h4>Pre-Submission Checklist</h4>



<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Commit message has the format required by CONTRIBUTING guide</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Commits are split per component (core, individual modules, libs, utils, ...)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Each component has a single commit (if not, squash them into one commit)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> No commits to README files for modules (changes must be done to docbook files<br>
in <code>doc/</code> subfolder, the README file is autogenerated)</li>
</ul>
<h4>Type Of Change</h4>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Small bug fix (non-breaking change which fixes an issue)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> New feature (non-breaking change which adds new functionality)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Breaking change (fix or feature that would change existing functionality)</li>
</ul>
<h4>Checklist:</h4>

<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> PR should be backported to stable branches</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Tested changes locally</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Related to issue #XXXX (replace XXXX with an open issue number)</li>
</ul>
<h4>Description</h4>

<p>It looks like the db query is made before checking the configuration parameters for the following features:</p>
<ul>
<li>internal keep-alive mechanism</li>
<li>contact-expired callback execution</li>
</ul>
<p>For example, although keepalive mode is turned off, the location table is periodically queried.<br>
This is also true when there is no usrloc:contact-expired route.</p>
<p>In this commit, checks are added before these two db queries.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/kamailio/kamailio/pull/2726'>https://github.com/kamailio/kamailio/pull/2726</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Merge pull request #1 from kamailio/master</li>
  <li>Merge pull request #2 from kamailio/master</li>
  <li>Merge pull request #3 from kamailio/master</li>
  <li>usrloc: unnecessary periodic db queries cancelled</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/2726/files#diff-b629a9a1039183bf31cccb1b52a9c56f42d999dd716dcf4e31c3db0ecc807fdc">src/modules/usrloc/dlist.c</a>
    (4)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/2726/files#diff-e89f4c385700c97e4aa409b772c462823e6f817efbdeb6bab407b94a413a5dcf">src/modules/usrloc/udomain.c</a>
    (6)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/kamailio/kamailio/pull/2726.patch'>https://github.com/kamailio/kamailio/pull/2726.patch</a></li>
  <li><a href='https://github.com/kamailio/kamailio/pull/2726.diff'>https://github.com/kamailio/kamailio/pull/2726.diff</a></li>
</ul>

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