<p></p>
<h3>Description</h3>
<p>If topos is activated and kamailio responds a 407 "proxy authentication required" to a initial INVITE, INVITE received after with credentials (MD5 response in Proxy-Authorization header) is badly managed. Credentials are never validated and kamailio responds 407 again. If topoh is used instead topos all works fine and credential are validated.</p>
<h3>Troubleshooting</h3>
<h4>Reproduction</h4>
<p>Always.</p>
<h4>SIP Traffic</h4>
<h3>Possible Solutions</h3>
<p>I have tested with official kamailio 5.4.3-0.</p>
<ul>
<li><strong>Operating System</strong>:<br>
centos 7 (3.10.0-693.11.1.el7.x86_64)</li>
</ul>

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