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<body class='hmmessage'><div dir='ltr'>Hi Anne,<br><br>We only use IP addresses for all hosts. Therefore there should be no DNS lookups.<br><br>The issue appears in 11.14.1 as well as 1.8 however more so in version 11.<br><br>Regards,<br><br>Ross<br><br><div>> Date: Fri, 21 Nov 2014 22:11:36 +0100<br>> From: j.a.bezemer@opensourcepartners.nl<br>> To: ross.beer@outlook.com<br>> Subject: Re: [asterisk-dev] SIP Deadlock/Pause<br>> <br>> <br>> On Fri, 21 Nov 2014, Ross Beer wrote:<br>> <br>> > Hi All,<br>> ><br>> > I have raised an bug under https://issues.asterisk.org/jira/browse/ASTERISK-24540<br>> ><br>> > There appears to be SIP deadlock which stops registration and call setups. Asterisk doesn't crash, just stops accepting calls.<br>> ><br>> > Has anyone experienced this issue before?<br>> <br>> Indeed. At least in 1.8, SIP signaling is singlethreaded and will wait for <br>> any DNS timeout which can be quite long. Worse, if you register to a <br>> provider via DNS, a DNS timeout will cause immediate retry to that same <br>> server, and SIP thread will not do anything else. When DNS works again, <br>> things will usually go back to normal after a while.<br>> <br>> Quick solution: use IP addresses.<br>> <br>> Good luck,<br>> Anne Bezemer<br></div> </div></body>
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