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Hello,<br>
<br>
thanks for the patch, I will look over it soon.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 10/18/13 3:14 PM, Øyvind Kolbu
wrote:<br>
</div>
<blockquote cite="mid:20131018131416.GA66658@putsch.kolbu.ws"
type="cite">
<pre wrap="">Hi,
Kamailio's NAPTR behavior by default ignores the Order field, which it is
not allowed to do. Excerpt from RFC 2915:
Order
A 16-bit unsigned integer specifying the order in which the NAPTR
records MUST be processed to ensure the correct ordering of
rules. Low numbers are processed before high numbers, and once a
NAPTR is found whose rule "matches" the target, the client MUST
NOT consider any NAPTRs with a higher value for order (except as
noted below for the Flags field).
Currently one can set dns_{udp,tcp,tls,sctp}_pref to the same value and
then it will respect the Order field. This has the problem that the SRV
lookup order is forced to udp, tcp, tls and sctp.¹ Hence you can not
follow the RFC for NAPTR and also set your own priorities for SRV. E.g. I
want to have tls -> tcp -> udp and adhere to the NAPTR.
Made a core option, dns_naptr_ignore_rfc, default off, to preserve today's
behavior. See attached patch.
One implementation detail is that one currently can disable a protocol
by setting the priority to -1. In my patch that is currently ignored.
Can add a check for that in init_naptr_proto_prefs() before setting
a protocol's preference to 1.
¹ Mandated by the order of ip_addr.h's enum sip_protos.
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Trainings - Berlin, Nov 25-28; Miami, Nov 18-20, 2013
- more details about Kamailio trainings at <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a> -
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