Hi Daniel,
I have followed your instruction (I'm using kamailio 1.5) and before the t_relay("0x05") statement I've setted:

$du="sip:" + $rd + ";transport=tls";

but I get the following mesasge:

Jul 14 15:17:55 OVSIPP /usr/local/sbin/kamailio[7790] Request leaving server, D-URI='sip:garr.it;transport=tls' - M=INVITE RURI=sip:xxx@garr.it 
F=sip:yyyyy@sip.mydomqin.it:5066 T=sip:123456789@sip.mydomain.it:5066
Jul 14 15:17:55 OVSIPP /usr/local/sbin/kamailio[7790]: CRITICAL:core:mk_proxy: could not resolve hostname: "garr.it"
Jul 14 15:17:55 OVSIPP /usr/local/sbin/kamailio[7790]: ERROR:tm:uri2proxy: bad host name in URI <sip:garr.it;transport=tls>
Jul 14 15:17:55 OVSIPP /usr/local/sbin/kamailio[7790]: ERROR:tm:t_forward_nonack: failure to add branches


Therefore I would like to use information  about TLS connection (tls port?) got from NAPTR record.
Doesn't it possible with kamailio 1.5 ?

Many thanks,

Daniel



Il 08/07/2010 18.12, Matteo Campana ha scritto:


-------- Messaggio originale --------
Oggetto: Re: [SR-Users] Kamailio and NAPTR lookup with TLS
Data: Thu, 08 Jul 2010 18:10:35 +0200
Mittente: Daniel-Constantin Mierla <miconda@gmail.com>
A: matteo.campana@klarya.it
CC: sr-users@lists.sip-router.org 


Hello,

On 7/8/10 5:59 PM, Matteo Campana wrote:
>
> Hi all,
> I'm using kamailio 1.5 with TLS module.
> I need to make ENUM query and get NAPTR record.
> > From NAPTR lookup, I'd like to relay my SIP Invite with tls protocol.
>
> How can I tell Kamailio to use TLS protocol ( instead of udp) after NAPTR lookup ?
>
> I've try to set :
>
> dns_tls_pref=1
> dns_udp_pref=2
> dns_tcp_pref=3
>
> in the general section of kamailio.cfg, but I get a parse error.
>
>    
these parameters were introduced in kamailio with version 3.0.

If you need TLS then it is recommended to use 3.0 anyhow, it is a far 
better implementation. That will make the life easier to migrate to 
upcoming 3.1 that will bring asynchronous TLS.

No matter what you have in R-URI, you can force TLS via setting outbound 
proxy address to be a TLS uri:

$du = "sip:__ip_or_host__;transport=tls";
t_relay();

The IP or host you can take from R-URI without any problem via PV $rd. 
Other option is to use function from tm - t_relay_to_tls():

http://kamailio.org/docs/modules/stable/modules/tm.html#t_relay_to_udp

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
http://www.asipto.com/