<ul>
<li>calculate ob_key as SHA1(flow_token_secret) if specified</li>
<li>keep old behavior with randomly generated ob_key if not specified</li>
</ul>


<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"> 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" checked=""> 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>Adds <code>flow_token_secret</code>(string) parameter for <strong>outbound</strong> module to give the ability to use persistent ob_key which is used for flow tokens validation.</p>
<p>Useful for cluster configurations with floating IP and ensures successful validation of the previously generated flow tokens after the <strong>kamailio</strong> restart.</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/2801'>https://github.com/kamailio/kamailio/pull/2801</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>outbound: add flow_token_secret param</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/2801/files#diff-6f0b535e89b892026f07daa6480457299aa5f9630ddfc565f13a22e409c6325d">src/modules/outbound/doc/outbound_admin.xml</a>
    (22)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/2801/files#diff-237c6b170df6551b79cb46d774de43fb6f393527fcd00b08920e17632eee3711">src/modules/outbound/outbound_mod.c</a>
    (22)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/kamailio/kamailio/pull/2801.patch'>https://github.com/kamailio/kamailio/pull/2801.patch</a></li>
  <li><a href='https://github.com/kamailio/kamailio/pull/2801.diff'>https://github.com/kamailio/kamailio/pull/2801.diff</a></li>
</ul>

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