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Bug#836236: prosody: doesn't try IPv4 when IPv6 fails

From	Cyril Brulebois <kibi@debian.org>
Newsgroups	linux.debian.bugs.dist
Subject	Bug#836236: prosody: doesn't try IPv4 when IPv6 fails
Date	2016-08-31 23:30 +0200
Message-ID	<sclf4-7DL-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Package: prosody
Version: 0.9.7-2+deb8u3
Severity: normal

Hi,

My server is trying to initiate a connection to crans.org, which has the
following DNS bits set up:
| _xmpp-server._tcp.crans.org. 466 IN	SRV	5 0 5269 xmpp.crans.org.
| 
| xmpp.crans.org.		466	IN	A	138.231.136.66
| xmpp.crans.org.		466	IN	AAAA	2a01:240:fe3d:4:200:42ff:fe42:4204

Logs say:
| Aug 31 23:02:18 s2soute11b40    info    Beginning new connection attempt to crans.org ([2a01:240:fe3d:4:200:42ff:fe42:4204]:5269)
| Aug 31 23:02:18 s2soute11b40    info    Out of connection options, can't connect to crans.org
| Aug 31 23:02:18 s2soute11b40    info    Sending error replies for 1 queued stanzas because of failed outgoing connection to crans.org

which is fair enough because:
 - trying IPv6 first is the right thing to do;
 - this port appears closed on IPv6 at the time of writing.

But prosody should move to trying a connection on IPv4 instead of simply
giving up and trying again a moment later.

Thanks for your time.


KiBi.

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Thread

Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Cyril Brulebois <kibi@debian.org> - 2016-08-31 23:30 +0200
  Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Matthew Wild <mwild1@gmail.com> - 2016-09-01 00:00 +0200
    Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Cyril Brulebois <kibi@debian.org> - 2016-09-01 00:10 +0200
      Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Cyril Brulebois <kibi@debian.org> - 2016-09-01 00:30 +0200
        Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Matthew Wild <mwild1@gmail.com> - 2016-09-01 10:40 +0200
          Bug#836236: prosody: doesn't try IPv4 when IPv6 fails Cyril Brulebois <kibi@debian.org> - 2016-09-01 17:20 +0200

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