Hi,
I suppose calling set_forward_no_connect() at the LB for a request from
the registrar to a user will lead to the result. LB won't try to make an
outgoing tcp/tls connection to reach a requested destination and will
only forward a request only via existing one.
BR
Thanks for your explanation, the problem is that the actual lookup is
done by a proxy which is located after our load balancer. Therefore,
the TCP connection with the UA should not be visible by the proxy but
by the load balancer.
How does that work in such case?
*From:*sr-users [mailto:sr-users-boun...@lists.sip-router.org] *On
Behalf Of *Vitaliy Aleksandrov
*Sent:* Wednesday, May 06, 2015 10:34 AM
*To:* sr-users@lists.sip-router.org
*Subject:* Re: [SR-Users] Recommended configuration for TCP support
*set_forward_no_connect()* called after lookup() prevents kamailio
from making a new connection to a phone if there is no active connection.
This is useful when you are trying to call to a UA which kamailio
still keeps registration record for, but TCP/TLS connect to this phone
is already gone (due to timeout, network problem, etc...).
On 05/05/15 14:54, Mickael Marrache wrote:
In general, it happens in our network (as more and more Via
headers are added).
Sorry, I didn't understand your last sentence. What do you mean by
not connect if there is no active connection after location lookup?
*From:*sr-users [mailto:sr-users-boun...@lists.sip-router.org] *On
Behalf Of *Daniel-Constantin Mierla
*Sent:* Monday, May 04, 2015 11:07 PM
*To:* Kamailio (SER) - Users Mailing List
*Subject:* Re: [SR-Users] Recommended configuration for TCP support
Hello,
where are typically those issues with truncated SDP? On the phones?
If you use tcp and have phones behind the nat, it is recommended
to not connect if there is no active connection after location
lookup -- see core functions for tcp.
Cheers,
Daniel
On 04/05/15 13:54, Mickael Marrache wrote:
Hi,
We sometimes get issues caused by truncated SDP bodies.
Therefore, we are looking at using TCP instead of UDP.
What is the recommended configuration when TCP is used?
Currently, I only have the following:
children=16
listen=udp:<ip>:5060
listen=tcp:<ip>:5060
disable_tcp=no
tcp_connection_lifetime=605 (registration expiry is 600)
Also, is there a difference with UDP regarding NAT handling?
Thanks,
Mickael
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Daniel-Constantin Mierla
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-http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany -http://www.kamailioworld.com
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