11 Sep
2020
11 Sep
'20
2:29 a.m.
Hello David,
I am able to get the INVITE go from one kamailio to the other just fine and
the call actually connects, the problem arises when, for example, a 200 OK
(SDP) message is delivered back to the caller, this SDP doesn't have the
necessary information for the ACK to route itself back to the caller.
Therefore I am having to keep track of each to/from tag (in an htable) and
know on which kamailio those to/from tags are being handled so that I can
intercept messages and then re-route them since simply calling t_relay
would not work.
This is getting very messy and there are a lot of cases in which the
scenario is not working as desired (for example, a BYE message is behaving
very in a very strange manner if the caller is the one that hangs up the
call).
If you could get me those PPT I would really appreciate it! I am not a SIP
guru but I can defend myself. I just can't seem to understand properly how
to route these replies/requests.
If needed, tomorrow I will try to capture a few scenarios with sngrep so
that I can share them, I have multiple scenarios with multiple problems but
I will try to pick the one that's working the best.
Saludos,
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Benjamín Visón / IT Engineer / Software Developer
bvisonl(a)gmail.com / (829)-664-5163
On Thu, Sep 10, 2020 at 2:42 PM David Villasmil <
david.villasmil.work(a)gmail.com> wrote:
Hello,
What happens when you send the INVITE from Kamailio1 to Kamailio2? that
should work properly. It is a simple call scenario, unless you have some
other requirement?
There's even some PPTs showing how that works (which i can't find right
now)
Regards,
David Villasmil
email: david.villasmil.work(a)gmail.com
phone: +34669448337
On Thu, Sep 10, 2020 at 5:57 PM Benjamín Visón <bvisonl(a)gmail.com> wrote:
I am setting up a redundant active/active
environment and I am in need of
having 2 kamailios operate as full proxies (meaning both of them will
accept registrations).
I am using DMQ in order to keep htables synched as well as dialogs.
For locations, I have a PostgreSQL database with the registrations.
My problem is that since both kamailios are accepting registrations the
UACs are only able to receive packets from the UAS on which they are
registered. Therefore when let's say UAC-1 registers to Kamailio A and it
tries to call UAC-2 which is registered on Kamailio B nothing happens
because UAC-2 receives the INVITE from Kamailio A and just ignores them.
I've spent almost a month trying to play with inter-kamailio
communication (that is, detecting these types of scenarios and sending the
INVITE to Kamailio B and have Kamailio B send the INVITE to UAC-2) but
there are a LOT of things that are not working properly let alone having to
keep track of all the dialog information and to/from tags and doing proper
route of all ACK/BYE/CANCEL, etc.
My question is, is there a way to achieve this scenario where multiple
kamailios can coexist with all responsibilities?
Things I've tried:
- Keep track of to/from tag in an htable and forward requests based
on who sent the request
- Use append_branches to handle multiple AOR (with the possibility of
1 user having multiple registrations in different kamailios)
- Manually tweaking $ru/$du based on what type of request is and who
is it destined to.
Any orientation will be appreciated as this is a crucial piece of the
project I'm working on.
Saludos,
[image: Facebook] <https://www.facebook.com/bvisonl>[image: Twitter]
<https://twitter.com/benjaminvison>[image: Instagram]
<https://instagram.com/bvisonl/>
Benjamín Visón / IT Engineer / Software Developer
bvisonl(a)gmail.com / (829)-664-5163
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