<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" checked=""> 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 against Version 5.1.0</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Related to issue <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="238634046" data-permission-text="Issue title is private" data-url="https://github.com/kamailio/kamailio/issues/1168" href="https://github.com/kamailio/kamailio/issues/1168">#1168</a> (replace XXXX with an open issue number)</li>
</ul>
<h4>Description</h4>

<p>The ims_isc module cannot cope with the fact that asynchronous Response from HSS (Diameter SAA message) is received as "FAILURE_ROUTE". ims_isc module erroneously assumes, it is an answer from the AS. Change: added a "firstflag", which makes a difference between first call (SAA from HSS) and subsequent call (FAILURE ROUTE from AS).</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/1538'>https://github.com/kamailio/kamailio/pull/1538</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>ims_isc: initial fix of issue #1168</li>
  <li>ims_isc: implement regexec for isc_checker_find() for wildcarded PSIs</li>
  <li>ims_isc: fix: use null terminated strings for regex functions</li>
  <li>ims_isc: delete regexec for wildcarded PSIs from isc_checker_find()</li>
  <li>ims_isc: remove KCCVICT tagging</li>
  <li>Merge branch 'devel_rewi_psi' into bugfix_issue_1168</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/1538/files#diff-0">src/modules/ims_isc/ims_isc_mod.c</a>
    (9)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/1538/files#diff-1">src/modules/ims_isc/isc.c</a>
    (4)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/1538/files#diff-2">src/modules/ims_isc/isc.h</a>
    (2)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/kamailio/kamailio/pull/1538.patch'>https://github.com/kamailio/kamailio/pull/1538.patch</a></li>
  <li><a href='https://github.com/kamailio/kamailio/pull/1538.diff'>https://github.com/kamailio/kamailio/pull/1538.diff</a></li>
</ul>

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