24 Sep
2009
24 Sep
'09
6:55 a.m.
Daniel-Constantin Mierla schrieb:
Hello,
On 24.09.2009 12:10 Uhr, catalina oancea wrote:
works only if the provider use Kamailio (in which case syncronized
nonces shouldn't be a problem)
Hi,
In my scenario kamailio is not a registrar, it's just a proxy
forwarding requests from asterisk to the provider.
I see.
As Juha said, REGISTER does not create a real dialog, since the contact
in 200OK is the address of publisher not of destination. So a proxy does
not have within-dialog like routing information.
So here is a hack you can try:
- add record route on your proxy
- the provider should add its own record route to REGISTER reply -- if
it is kamailio, that is simple via append_to_reply() from textops, just
before save() call. - hope/pray that asterisk is using these dialog info
for building
re-registration messages
I don't think that will work.
klaus
- on your kamailio route based on Route header
Cheers,
Daniel
2009/9/24 Daniel-Constantin Mierla <miconda(a)gmail.com>om>:
Hello,
On 24.09.2009 11:47 Uhr, catalina oancea wrote:
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Hi all,
I tested the following scenario:
astreisk kamailio
provider(hostname)
--------------------> dns lookup -------------------->
REGISTER 1 REGISTER 1
<--------------------
<--------------------
401 401
--------------------> dns lookup -------------------->
REGISTER 2 REGISTER 2
(same dialog, increased cseq)
It seems that kamailio does dns lookup again when receiving REGISTER
2, although both registers are part of the same dialog. Is this the
expected behavior?
IIRC now, there is no place in registrar related modules (registrar and
usrloc) where DNS query is done. You have some checks in your config
that
caused that.
There is also an option to fetch existing contacts from location and
see if
it is an update (matching by call id and cseq) and do directly
save("location").
Cheers,
Daniel
--
Daniel-Constantin Mierla
* Kamailio SIP Masterclass, Nov 9-13, 2009, Berlin
* http://www.asipto.com/index.php/sip-router-masterclass/