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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi Bogdan,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks for your answer.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Issue opened :
</span><span class="opened-by"><span lang="EN-US">#3285<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="opened-by"><span lang="EN-US">Regards,<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="opened-by"><span lang="EN-US"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span class="opened-by"><span lang="EN-US"> Guillaume Desgeorge<o:p></o:p></span></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="mso-fareast-language:FR">De :</span></b><span style="mso-fareast-language:FR"> Bogdan-Andrei Iancu <bogdan@opensips.org>
<br>
<b>Envoyé :</b> mercredi 10 janvier 2024 17:28<br>
<b>À :</b> OpenSIPS users mailling list <users@lists.opensips.org>; DESGEORGE Guillaume INNOV/IT-S <guillaume.desgeorge@orange.com><br>
<b>Objet :</b> Re: [OpenSIPS-Users] DNS could not resolve hostname in dispatcher<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">Hi Guillaume,<br>
<br>
Indeed, a weird one, not marking the destination as failed upon failure to ping it. I checked the drouting module and it is doing such disable, so it might be a overlook in the dispatcher module. Please open a bug report on the github tracker, so we can address
this issue.<br>
<br>
Regards,<br>
<br>
</span><span style="mso-fareast-language:FR"><o:p></o:p></span></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="https://www.opensips-solutions.com/">https://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre> <a href="https://www.siphub.com/">https://www.siphub.com</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 09.01.2024 11:32, <a href="mailto:guillaume.desgeorge@orange.com">
guillaume.desgeorge@orange.com</a> wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi everyone,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">We are facing a problem with Opensips 3.3 (but I’ve done tests on opensips 2.4 and it was the same).</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">In the dispatcher, if we have a name instead of an IP address in “destination”, and that the DNS falls down, we have an error “could not resolve hostname” in the
log. Then, Opensips can’t resolve the name, there is no more OPTIONS message sent to the destination but the state stays as 0 and if a call arrives, Opensips still route the INVITE to the last known IP address.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">I find that’s strange :
</span><o:p></o:p></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo3"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Either Opensips consider that the DNS is down but the destination may be still up with the last IP address
he knows and he could still send OPTIONS messages to the last known IP address</span><o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo3"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Either Opensips consider that the DNS is down and doesn’t send OPTIONS message but in that case he should
not send INVITE to the old IP address.</span><o:p></o:p></li></ol>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">I work with a product that has his own DNS and removes the name of the server in the DNS when the machine is down. So everytime the server is down, Opensips can’t
resolve the name and still send calls to that server…</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Is there any parameters I can use to change that way of working ?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif">Regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> Guillaume</span><o:p></o:p></p>
<div style="margin-left:5.0pt;margin-top:5.0pt;margin-right:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-size:8.0pt;font-family:"Helvetica 75 Bold",sans-serif;color:#ED7D31">Orange Restricted</span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="mso-fareast-language:FR"><br>
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<o:p></o:p></span></p>
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