Public bug reported:
Linphone on ubuntu is patched to use the libexosip2 library rather than
libbellesip. The current libexosip2 package does not appear to handle
the lookup of voip DNS SRV records correctly. The causes the handling of
sip uris when not using an outbound proxy to be broken.
For example here in the Uk the Andres and Arnold voip service tells it's
users to use sip urls in the the form "sip:<number>@aa.org.uk"
The domain aa.org.uk does not contain any NAPTR records but does contain
SRV records pointing at the correct server.
roger@dragon:~$ host -t NAPTR aa.org.uk
aa.org.uk has no NAPTR record
roger@dragon:~$ host -t SRV _sip._udp.aa.org.uk
_sip._udp.aa.org.uk has SRV record 1 0 5060 voiceless.aa.org.uk.
Linphone using libexosip2 first queries aa.net.uk for a NAPTR. When this
fails it queries aa.net.uk again for an address record. This returns the
address of a server associated with aa.org.uk (I believe this is a web
server).
The correct behavior should be to prefix the domain with "_sip._udp."
and look for a SRV record, then resolve the address from there.
Ubuntu release 17.04
** Affects: libexosip2 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linphone (Ubuntu)
Importance: Undecided
Status: New
** Tags: libexosip2 linphone sip voip
** Also affects: libexosip2 (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Linphone on ubuntu is patched to use the libexosip2 library rather than
libbellesip. The current libexosip2 package does not appear to handle
the lookup of voip DNS SRV records correctly. The causes the handling of
sip uris when not using an outbound proxy to be broken.
- For example here in the Uk the Andres and Arnold voip service tells it
- users to sip urls in the the form "sip:<number>@aa.org.uk"
+ For example here in the Uk the Andres and Arnold voip service tells it's
+ users to use sip urls in the the form "sip:<number>@aa.org.uk"
The domain aa.org.uk does not contain any NAPTR records but does contain
- SVR records pointing at the correct server.
+ SRV records pointing at the correct server.
roger@dragon:~$ host -t NAPTR aa.org.uk
aa.org.uk has no NAPTR record
roger@dragon:~$ host -t SRV _sip._udp.aa.org.uk
_sip._udp.aa.org.uk has SRV record 1 0 5060 voiceless.aa.org.uk.
Linphone using libexosip2 first queries aa.net.uk for a NAPTR. When this
fails it queries aa.net.uk again for an address record. This returns the
address of a server associated with aa.org.uk (I believe this is a web
server).
The correct behavior should be to look prefix the domain with
"_sip._udp." and look for a SRV record, then resolve the address from
there.
Ubuntu release 17.04
** Description changed:
Linphone on ubuntu is patched to use the libexosip2 library rather than
libbellesip. The current libexosip2 package does not appear to handle
the lookup of voip DNS SRV records correctly. The causes the handling of
sip uris when not using an outbound proxy to be broken.
For example here in the Uk the Andres and Arnold voip service tells it's
users to use sip urls in the the form "sip:<number>@aa.org.uk"
The domain aa.org.uk does not contain any NAPTR records but does contain
SRV records pointing at the correct server.
roger@dragon:~$ host -t NAPTR aa.org.uk
aa.org.uk has no NAPTR record
roger@dragon:~$ host -t SRV _sip._udp.aa.org.uk
_sip._udp.aa.org.uk has SRV record 1 0 5060 voiceless.aa.org.uk.
Linphone using libexosip2 first queries aa.net.uk for a NAPTR. When this
fails it queries aa.net.uk again for an address record. This returns the
address of a server associated with aa.org.uk (I believe this is a web
server).
- The correct behavior should be to look prefix the domain with
- "_sip._udp." and look for a SRV record, then resolve the address from
- there.
+ The correct behavior should be to prefix the domain with "_sip._udp."
+ and look for a SRV record, then resolve the address from there.
Ubuntu release 17.04
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https://bugs.launchpad.net/bugs/1704577
Title:
Incorrect handling of DNS SRV and DNS NAPTR records
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