25 May
2016
25 May
'16
11:32 p.m.
Hello,
Sorry if this is a tired, worn question, but I've not dealt much with
Kamailio's SRV support before:
If a registrant has a contact binding whose domain component is subject
to an SRV lookup with load-balanced or weighted entries, how does one
solve the problem of ensuring that subsequent in-dialog requests go to
the same host as the initial INVITE? Does Kamailio offer some facility
for doing this? Is it somehow accommodated by SIP?
-- Alex
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
25 May
25 May
11:51 p.m.
On 05/25/2016 04:32 PM, Alex Balashov wrote:
Hello,
Sorry if this is a tired, worn question, but I've not dealt much with
Kamailio's SRV support before:
If a registrant has a contact binding whose domain component is subject
to an SRV lookup with load-balanced or weighted entries, how does one
solve the problem of ensuring that subsequent in-dialog requests go to
the same host as the initial INVITE? Does Kamailio offer some facility
for doing this? Is it somehow accommodated by SIP?
-- Alex
Clarification:
Why would this be wanted?
I ask, as if you were using a srv record as the result of a load balance
lookup, wouldn't the point be to be able to quickly change location of
the domain in case of an outage/issue?
Otherwise, I'm not positive the benefit of doing a srv lookup for this
scenario.
--
Fred Posner
@fredposner
The Palner Group, Inc.
http://www.palner.com
direct/sms: +1 (503) 914-0999
direct/sms: +1 (224) 334-FRED
11:53 p.m.
Oh, if only I were personally responsible for the initiative behind this question... :)
My best guess is that SRV is viewed here as an LB mechanism only and without any interest
in fail over.
-- Alex
--
Principal, Evariste Systems LLC (www.evaristesys.com)
Sent from my Google Nexus.
26 May
26 May
6:11 p.m.
You can use a htable for the rescue, either storing the selected IP
within onsend_route or when the replies are coming back. An alternative
is to store as a dialog variable.
Cheers,
Daniel
On 25/05/16 22:53, Alex Balashov wrote:
Oh, if only I were personally responsible for the
initiative behind this question... :)
My best guess is that SRV is viewed here as an LB mechanism only and without any interest
in fail over.
-- Alex
--
Principal, Evariste Systems LLC (www.evaristesys.com)
Sent from my Google Nexus.
_______________________________________________
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sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla
http://www.asipto.com - http://www.kamailio.org
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
6:40 p.m.
On 05/26/2016 11:11 AM, Daniel-Constantin Mierla wrote:
You can use a htable for the rescue, either storing
the selected IP
within onsend_route or when the replies are coming back. An
alternative is to store as a dialog variable.
Okay, so I'd need to keep my own state. If I understood correctly, SIP
provides no more fundamental facility for addressing this. Right?
--
Alex Balashov | Principal | Evariste Systems LLC
1447 Peachtree Street NE, Suite 700
Atlanta, GA 30309
United States
Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
7:58 p.m.
On 26/05/16 17:40, Alex Balashov wrote:
On 05/26/2016 11:11 AM, Daniel-Constantin Mierla
wrote:
I haven't checked right now the 3263 (iirc), but as far as I remember,
there is no nothing enforced in this regard. If a UA wants to use a
fixed point, then after the initial routing upon DNS lookup after
location service handling, then the device should set the Contact in
200ok with an IP address if it doesn't want a DNS lookup to be done
based on hostname of its Contact address.
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://www.asipto.com - http://www.kamailio.org
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
You can use a htable for the rescue, either
storing the selected IP
within onsend_route or when the replies are coming back. An
alternative is to store as a dialog variable.
Okay, so I'd need to keep my own state. If I understood correctly, SIP
provides no more fundamental facility for addressing this. Right?
3102
days inactive
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5 comments
3 participants
participants (3)
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Alex Balashov -
Daniel-Constantin Mierla -
Fred Posner