<ul>
<li>adds a default value for when there is no call-id in the req struct.</li>
<li>reported in <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="950196543" data-permission-text="Title is private" data-url="https://github.com/kamailio/kamailio/issues/2803" data-hovercard-type="issue" data-hovercard-url="/kamailio/kamailio/issues/2803/hovercard" href="https://github.com/kamailio/kamailio/issues/2803">#2803</a></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" 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</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 title" data-id="950196543" data-permission-text="Title is private" data-url="https://github.com/kamailio/kamailio/issues/2803" data-hovercard-type="issue" data-hovercard-url="/kamailio/kamailio/issues/2803/hovercard" href="https://github.com/kamailio/kamailio/issues/2803">#2803</a></li>
</ul>
<h4>Description</h4>

<p>In some cases the callid field of the msg structure doesn't get initialized. In the case the dlg_onroute function is called with this msg and the dialog is not found a warning message is printed using the LM_WARN macro. This logger is called with a req->callid as argument and when this is null a segmentation fault happens. I added a small default value for this case.</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/2878'>https://github.com/kamailio/kamailio/pull/2878</a></p>

<h4>Commit Summary</h4>
<ul>
  <li><a href="https://github.com/kamailio/kamailio/pull/2878/commits/1a9c0c930c009e09853c9e5b0f64a9651352bffd">dialog: fix dlg_onroute</a></li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/kamailio/kamailio/pull/2878/files#diff-fcedab6dfa18efbd763d366721440cf3f26e20979cfca362e165d0a2f8ed98ec">src/modules/dialog/dlg_handlers.c</a>
    (10)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/kamailio/kamailio/pull/2878.patch'>https://github.com/kamailio/kamailio/pull/2878.patch</a></li>
  <li><a href='https://github.com/kamailio/kamailio/pull/2878.diff'>https://github.com/kamailio/kamailio/pull/2878.diff</a></li>
</ul>

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