[asterisk-bugs] [JIRA] (ASTERISK-18353) SIP registration doesn't use round-robin DNS.
Olle Johansson (JIRA)
noreply at issues.asterisk.org
Thu May 2 07:45:38 CDT 2013
[ https://issues.asterisk.org/jira/browse/ASTERISK-18353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Olle Johansson reopened ASTERISK-18353:
---------------------------------------
There is a bug here this issue should NOT have been closed.
> SIP registration doesn't use round-robin DNS.
> ---------------------------------------------
>
> Key: ASTERISK-18353
> URL: https://issues.asterisk.org/jira/browse/ASTERISK-18353
> Project: Asterisk
> Issue Type: Bug
> Security Level: None
> Components: Channels/chan_sip/General
> Affects Versions: 1.8.5.0
> Environment: Asterisk 1.8.5.0, Fedora 15
> Reporter: David Woodhouse
> Severity: Minor
>
> When there are multiple IP addresses in DNS for a given host, chan_sip only seems to try one of them, repeatedly. It doesn't fall back to the others.
> This is especially noticeable when RFC3484 puts an IPv6 address top in the list but the server doesn't respond on that address (which is a bug, but happens).
> But it's true even for purely Legacy IP setups; if there are multiple servers listed in round-robin, it should try them all before failing.
> But it doesn't. It just tries the *same* host again:
> [Aug 27 10:44:43] NOTICE[16688]: chan_sip.c:12654 sip_reg_timeout: -- Registration for '01799xxxxxx at c.speechless.aaisp.net.uk' timed out, trying again (Attempt #1782)
> Really destroying SIP dialog '12474a89554cf44a1c33b0cf07c70413@[2001:8b0:10b:1:240:f4ff:fe28:959d]' Method: REGISTER
> Retransmitting #1 (no NAT) to [2001:8b0:0:30:225:90ff:fe05:11ac]:5060:
> (This is for registration; presumably the same problem exists elsewhere.)
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