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Hello,<br>
<br>
<div class="moz-cite-prefix">On 14/04/15 21:46, Mickael Marrache
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I sometimes get the
following errors:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">kamailio[16098]: ERROR:
<core> [resolve.c:1693]: sip_hostport2su(): could not
resolve hostname: "mycompany.com"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">kamailio[16098]: ERROR:
tm [ut.h:319]: uri2dst2(): failed to resolve "mycompany.com"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">mycompany.com cannot be
resolved using DNS (there is no corresponding DNS entry). I
use this as a logical domain and I don't expect Kamailio to
resolve it. Also, I set use_domain (usrloc module) to 0 so
only the RURI username is used when searching locations.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The flow is as follows:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-the proxy receives the
INVITE with <a moz-do-not-send="true"
href="sip:%3cuser%3e@myloadbalancerip:5060">sip:<user>@myloadbalancerip:5060</a>
which then forwards the INVITE to a proxy<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-the proxy looks for
<user> internally and finds that this user has
multiple subscribers (endpoints)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-for each subscriber, a
branch is appended using append_branch (or the RURI is
replaced for the first subscriber) – the new RURI for each
branch is <a moz-do-not-send="true"
href="sip:%3csubscriber%3e@mycompany.com">sip:<subscriber>@mycompany.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-finally,
lookup_branches is called to look for locations for every
subscriber<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">lookup_branches only
uses the subscriber (RURI username) for searching locations
since use_domain is set to 0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, I sometimes get
the errors I mentioned.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any idea why Kamailio
sometimes tries to resolve the domain name?<o:p></o:p></span></p>
</div>
</blockquote>
the dns is done before relaying, unless you have some explicit
actions or expressions in the configuration file that involve dns.
Maybe there are cases when you try to send out before changing the
domain part. You have to identify the function that is resulting in
this errors.<br>
<br>
One way to troubleshoot is to use log_prefix core parameter -- some
mode details about it here:<br>
<br>
-
<a class="moz-txt-link-freetext" href="http://by-miconda.blogspot.de/2014/10/kamailio-42-tips-1-log-message-prefix.html">http://by-miconda.blogspot.de/2014/10/kamailio-42-tips-1-log-message-prefix.html</a><br>
<br>
With printing $cfg(line). Then each log message from a config
function should have the associated line in config printed in the
log.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - <a class="moz-txt-link-freetext" href="http://www.kamailioworld.com">http://www.kamailioworld.com</a></pre>
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