15 Jun
2011
15 Jun
'11
5:18 p.m.
2011/6/15 Iñaki Baz Castillo <ibc(a)aliax.net>et>:
Kamailio just takes one of the NAPTR records, even if the first fails
and there are more NAPTR records with same order (tested right now).
The file doc/dns-txt confirms it:
dns_try_naptr = on | off - if on sip-router will first try a NAPTR lookup for
destinations that don't have the protocol or port specified and
are not simple ip addresses (as described in RFC 3263). This will
introduce a slight performance penalty and will probably cause extra
DNS lookups. For example a lookup for a non-existing domain will
produce one extra query: NAPTR(domain), SRV(_sip._udp.domain)
and A/AAAA(domain).
If the result of a query contains several NAPTR records,
sip-router will select
among them according to the RFC2915 and sip-router preference towards a
specific protocol (see dns_udp_pref, dns_tcp_pref and dns_tls_pref
below). For an RFC3263 compliant configuration (choose the remote side
preferred protocol if supported), set dns_udp_pref, dns_tcp_pref and
dns_tls_pref to the same value (>=0), e.g. 0.
Default: off
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
Unfortunately
this wasn't possible with Kamailio <=1.5. Have you tried 3.x
with equal 'Order' but different 'Preference' or just with different
'Order'?
Not yet, but I'll do it and comment here :)